CN203081862U - Slurry pump with low rinsing water pressure - Google Patents
Slurry pump with low rinsing water pressure Download PDFInfo
- Publication number
- CN203081862U CN203081862U CN 201220743856 CN201220743856U CN203081862U CN 203081862 U CN203081862 U CN 203081862U CN 201220743856 CN201220743856 CN 201220743856 CN 201220743856 U CN201220743856 U CN 201220743856U CN 203081862 U CN203081862 U CN 203081862U
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- pump
- impeller
- shaft
- cover
- water pressure
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Abstract
The utility model discloses a slurry pump with low rinsing water pressure. The slurry pump with the low rinsing water pressure comprises a pump shell, a pump shaft and a rear pump cover, wherein the rear pump cover is connected with the pump shell and installed on the pump shaft in a sleeved mode, filler and a water sealing ring are arranged between the pump shaft and the rear pump cover, a filler pressing cover is arranged on the atmosphere side of the pump shaft, an impeller is installed on one side of a pump inner cavity of the pump shaft, and a protruding edge which is inserted between the back blade surface of the impeller and a hub is formed in an extending mode on the position, corresponding to one side of the pump inner cavity, of the rear pump cover. The section of the protruding edge is of a tongue shape corresponding to the shape between the back blade surface of the impeller and the hub. The distance from the protruding edge to a gap between the back blade surface of the impeller and the hub is 3.5 millimeters. The slurry pump with the low rinsing water pressure reduces the pressure of the position of a rinsing cavity in the slurry pump, and further reduces requirements for a shaft sealing water pump, thereby reducing using cost of the slurry pump.
Description
Technical field
The utility model relates to a kind of centrifugal pump, a kind of specifically gland sealed, slag stock pump that sparge water pressure is low of adopting.
Background technique
The slag stock pump belongs to a kind of of centrifugal pump, is a kind of machinery that solid, liquid mixed medium energy is increased by the effect by centrifugal force (rotation of the impeller of pump), is a kind of kinetic energy of medium and equipment of potential energy of converting electric energy to.The slag stock pump is widely used in industries such as mine, electric power, metallurgy, coal, environmental protection, is used to carry the slurry that contains the abrasion solid particle.
Because being mainly used in, the slag stock pump carries the slurry that contains the abrasion solid particle, so in use for avoiding slurry to leak, need between the pump case of the power input shaft end of slag stock pump and slag stock pump, seal arrangement be set, and packing seal is modal seal form, generally comprise pump shaft and the axle sleeve that is fixed on the pump shaft excircle, inner chamber side on the excircle of axle sleeve from the atmospheric side to the pump is disposed with filler and seal cage, the outside of filler is fixed by Gland, seal cage is provided with internal flow channel, on the excircle of filler and seal cage rear pump cover is set, rear pump cover is provided with the flushing mouth of a river, the flushing mouth of a river is corresponding with the position of the internal flow channel of seal cage, Gland is fixedly attached on the rear pump cover, is connected by screw between rear pump cover and the pump case.All need high-pressure washing water in this stuffing seal, high-pressure washing water is beaten to slag stock pump inside by the flushing mouth of a river on the rear pump cover, requires the pressure height of the pressure of sparge water than the slurry in the pump chamber, so just can play the effect of sealing.The pressure of sparge water needs seal water pump to provide, because the slag stock pump has the advantages that fed sheet of a media is heavier, working environment is relatively poor and lift is far away, cause the pressure of the slurry in the slag stock pump higher, for reaching the purpose of sealing, pressure to sparge water requires also just very high, accordingly the pressure of seal water pump that sparge water is provided is also just required highlyer, certainly will increase the user cost of slag stock pump.In addition, the axial seal pressure height though can prevent that slurry is excessive, also can impact filler, causes packing leaking.
The model utility content
The utility model technical issues that need to address provide the pressure that can reduce place, slag stock pump interior flushing chamber, and then reduce the low slag stock pump of a kind of sparge water pressure to the requirement of seal water pump.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is:
The slag stock pump that a kind of sparge water pressure is low, comprise pump case, pump shaft, be connected with pump case be sleeved on rear pump cover on the pump shaft, filler and seal cage are set between described pump shaft and the rear pump cover, the atmospheric side of pump shaft is provided with Gland, pump inner chamber one side of pump shaft is installed impeller, and respective pump inner chamber one side is extended with the notopodium face of insertion impeller and the convex edge between the wheel hub on the described rear pump cover.
Further improvement of the utility model is: the section shape of described convex edge for and the notopodium face and the corresponding tongue shape of the shape between the wheel hub of impeller.
Further improvement of the utility model is: the notopodium face and the gap between the wheel hub of described convex edge and impeller are 3.5 millimeters.
Because the technological progress of having adopted technique scheme, the utility model to obtain is:
The utility model is by the improvement to the rear pump cover structure, the convex edge of rear pump cover is inserted between the notopodium face and wheel hub of impeller, under the constant situation of the lift of slag stock pump, effectively reduce the pressure in the flushing chamber at pump inner chamber impeller place, thereby reduced requirement, greatly reduced the user cost of slag stock pump seal water pump.Simultaneously,, avoided packing leaking, prolonged the working life of filler because the reduction of sparge water pressure has also reduced the impact to filler.
The section shape of convex edge is and the notopodium face and the corresponding tongue shape of the shape between the wheel hub of impeller, and processing is convenient, and the convex edge is set near round near pump shaft one side, is convenient to the installation of rear pump cover.
Be provided with 3.5 mm clearance between the notopodium face of convex edge and impeller and the wheel hub, can guarantee the impeller proper functioning, and effectively reduce the pressure in flushing chamber.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Wherein, 1, the flushing chamber, 2, impeller, 3, pump case, 4, rear pump cover, 5, the flushing mouth of a river, 6, filler, 7, axle sleeve, 8, seal cage, 9, spacer, 10, the convex edge, 11, pump shaft.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further details:
The slag stock pump that a kind of sparge water pressure is low as shown in Figure 1, comprises pump case 3, rear pump cover 4, pump shaft 11 and impeller 2, from axle head rear pump cover 4, pump case 3, impeller 2 is installed in turn on the pump shaft 11, and rear pump cover 4 is fixedlyed connected with pump case 3 by screw.Axle sleeve 7, spacer 9 are set in turn from atmospheric side to the pump inner chamber between pump shaft 11 and the rear pump cover 4, between axle sleeve 7 and the rear pump cover 4 filler 6 is set, between spacer 9 and the rear pump cover 4 seal cage 8 is set, seal cage 8 is provided with internal flow channel, rear pump cover 4 is provided with the flushing mouth of a river 5, and the flushing mouth of a river 5 is corresponding with the position of the internal flow channel of seal cage 8.Be extended with convex edge 10 on the end face of respective pump inner chamber one side on the rear pump cover 4, insert between the notopodium face and wheel hub of impeller 2 convex edge 10, the section shape of convex edge 10 is and the notopodium face and the corresponding tongue shape of the shape between the wheel hub of impeller 2, gapped between the notopodium face of convex edge 10 and impeller 2 and the wheel hub, the direct current channel that outwards overflow the slurry in the slag stock pump convex edge 10 changes over crooked passage, reduced seal cage 8, spacer 9, the pressure at 1 place, flushing chamber that rear pump cover 4 and impeller 2 constitute, also just reduced pressure requirement, thereby reduced the user cost of slag stock pump seal water pump.
In the present embodiment, the degree of depth that the wheel hub of impeller 2 is stretched in convex edge 10 is 25 millimeters, and the notopodium face and the gap between the wheel hub of convex edge 10 and impeller 2 are 3.5 millimeters.
Working principle of the present utility model is:
Under the driving of drive unit, pump shaft 11 rotations drive 2 rotations of fixedly connected with it impeller, and the slurry of input slag input stock pump is exported from delivery outlet.Pump shaft 11 rotating band moving axis cover 7 and spacer 9 run-in synchronism with it, 8 transfixions of filler 6 and seal cage are fixed in rear pump cover 4 holes.The trend that the delivery pressure of slurry makes slurry have outwards to overflow in the slag stock pump, for avoiding slurry excessive, filler 6 is set in order to sealing, for guaranteeing sealing effect, need be from the flushing mouth of a river 5 to the inner input of pump chamber sparge water, sparge water enters flushing chamber 1 by the internal flow channel of seal cage 8, because the pressure of sparge water is higher than slurry pressure, so sparge water enters the pump inner chamber by flushing chamber 1, reaches the purpose of sealing.On the rear pump cover 4 of the present utility model convex edge 10 is set, convex edge 10 is inserted between the notopodium face and wheel hub of impeller 2, has reduced in the pump slurry and has liquidated and wash the pressure in chamber 1, and then reduced the requirement to seal water pump.
Claims (3)
1. slag stock pump that sparge water pressure is low, comprise pump case (3), pump shaft (11), be connected with pump case (3) be sleeved on rear pump cover (4) on the pump shaft (11), filler (6) and seal cage (8) are set between described pump shaft (11) and the rear pump cover (4), the atmospheric side of pump shaft (11) is provided with Gland, pump inner chamber one side of pump shaft (11) is installed impeller (2), it is characterized in that: described rear pump cover (4) is gone up respective pump inner chamber one side and is extended with the notopodium face of insertion impeller (2) and the convex edge (10) between the wheel hub.
2. the low slag stock pump of a kind of sparge water pressure according to claim 1 is characterized in that: the section shape of described convex edge (10) for and the notopodium face and the corresponding tongue shape of the shape between the wheel hub of impeller (2).
3. the low slag stock pump of a kind of sparge water pressure according to claim 2 is characterized in that: the notopodium face and the gap between the wheel hub of described convex edge (10) and impeller (2) are 3.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743856 CN203081862U (en) | 2012-12-29 | 2012-12-29 | Slurry pump with low rinsing water pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743856 CN203081862U (en) | 2012-12-29 | 2012-12-29 | Slurry pump with low rinsing water pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081862U true CN203081862U (en) | 2013-07-24 |
Family
ID=48827703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220743856 Expired - Fee Related CN203081862U (en) | 2012-12-29 | 2012-12-29 | Slurry pump with low rinsing water pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203081862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895828A (en) * | 2014-03-06 | 2015-09-09 | 江苏核电有限公司 | Circulating seawater pump shaft seal device |
| CN108194368A (en) * | 2017-12-21 | 2018-06-22 | 江苏双轮泵业机械制造有限公司 | A kind of low Pulp pump for rinsing cavity pressure |
-
2012
- 2012-12-29 CN CN 201220743856 patent/CN203081862U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895828A (en) * | 2014-03-06 | 2015-09-09 | 江苏核电有限公司 | Circulating seawater pump shaft seal device |
| CN108194368A (en) * | 2017-12-21 | 2018-06-22 | 江苏双轮泵业机械制造有限公司 | A kind of low Pulp pump for rinsing cavity pressure |
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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 |
Granted publication date: 20130724 Termination date: 20151229 |
|
| EXPY | Termination of patent right or utility model |