CN104121204A - Double-suction slurry pump - Google Patents
Double-suction slurry pump Download PDFInfo
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- CN104121204A CN104121204A CN201410309326.2A CN201410309326A CN104121204A CN 104121204 A CN104121204 A CN 104121204A CN 201410309326 A CN201410309326 A CN 201410309326A CN 104121204 A CN104121204 A CN 104121204A
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- impeller
- pump
- suction chamber
- metal layer
- pump housing
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Abstract
The invention provides a slurry pump which is composed of a bearing assembly 2, a spindle 1, a pump cover 3, a pump body 5, an impeller 7 and the like. The slurry pump is characterized in that the impeller is formed by combining a component made of composite wear-resistant materials and a component made of metal materials; the impeller is a closed type double-suction impeller, the bearing assembly is arranged on one side of one suction port, and a feed pipe is arranged on one side of the other suction port; a front suction chamber is arranged between the impeller and the feed pipe, and a rear suction chamber is arranged between the impeller and the bearing assembly; the pump body is of a multi-layer structure, the outer portion of the pump body is provided with an outer metal layer, the inner portion of the pump body is provided with a composite wear-resistant material lining layer, and a middle metal layer is arranged between the outer metal layer and the composite wear-resistant material lining layer; a channel leading to the rear suction chamber from the feed pipe is arranged between the outer metal layer and the middle metal layer of the pump body.
Description
Affiliated technical field
The present invention relates to a kind of centrifugal pump, in particular for carrying the centrifugal pump that has abrasion medium.
Background technique
When conveying has the medium of abrasion, often adopt slag stock pump.But there is following defect in the slag stock pump of prior art manufacture:
The flow passage part life-span is shorter: the flow passage part of existing slag stock pump generally adopts antifriction metal (AFM) or abrasive rubber manufacture, and wear resistance Chang Buneng meets the demands.
Lift raising is restricted: due to technological reason, slag stock pump generally adopts single suction impeller; During single suction impeller operation, can be subject to pointing to the axial force of suction port, its size and lift are directly proportional.Clean waterpump is standing puts equalizing orifice and seal ring carrys out this axial force of balance.But slag stock pump is considered wear problem, can only bear axial force by thrust-bearing is set.Along with increasing of slag stock pump lift, the rotating speed of pump also needs corresponding raising, and axial force increases in proportion, the essential thrust-bearing that adopts larger specification; But the bearing capacity of thrust-bearing and limit speed are contradiction, and bearing capacity is larger, limit speed is lower.For solving this contradiction, a lot of high-lift slag stock pumps are had to by adopting large diameter impeller, and the rotating speed that reduces main shaft improves the reliability of thrust-bearing.This not only causes manufacture cost significantly to rise, and also makes the specific speed of pump significantly decline, and the efficiency of pump is obviously declined.Adopt double-entry impeller can solve the excessive problem of axial force, but due to double-entry impeller complex structure, and need complicated suction chamber structure, if adopt conventional antifriction metal (AFM) or abrasive rubber manufacture, not only in technique, have very large difficulty, manufacture cost is also difficult to control.Therefore, only have in the market slag slurry pump under liquid simple in structure to adopt open type double-entry impeller or semi-open type double-entry impeller, not yet occur adopting the slag stock pump of enclosed double-entry impeller.But the shortcoming of the slag stock pump of employing unshrouded impeller or half-opened impeller is apparent, and not only the efficiency of pump is low, and damage in impeller is serious, can not realize high-lift.
In sum, due to structure and technique, lack in the market and a kind ofly can realize long lifetime, high-lift and high efficiency slag stock pump.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind of slag stock pump, be conducive to realize the long lifetime of slag stock pump, high-lift and high efficiency from aspects such as material, structure and techniques.
The technical solution adopted for the present invention to solve the technical problems is: slag stock pump is comprised of bearing portion assembly, main shaft, impeller, the pump housing, pump cover etc.; Impeller is combined by composite abrasion resistance material parts and metallic material parts; Impeller is enclosed double-entry impeller, in a side of an one suction port, is provided with bearing part group, in a side of its another suction port, is provided with material feeding mouth; Suction chamber before being provided with between impeller and material feeding mouth, suction chamber after being provided with between impeller and bearing portion assembly; The pump housing is multi-layer structure, and its outer installment has outer metal layer, and inside is provided with liner composite abrasion resistance material layer, is provided with intermediate metal layer outside between metal layer and liner composite wear-resistant layer; Between the outer metal layer of the pump housing and intermediate metal layer, be provided with the runner of suction chamber from material feeding mouth leads to; Pump cover is combined by composite abrasion resistance material parts and metallic material parts.
The Main Ingredients and Appearance of above-mentioned composite abrasion resistance material is the abrasive grain of 40%～95% weight and the resinoid bond of 5%～60% weight, abrasive material is the lower and wear resistance of cost artificial or natural abrasive preferably, as silicon nitride, silicon carbide, corundum, garnet, emery, zirconium oxide etc.Can adopt a kind of abrasive material wherein, also can adopt several abrasive material combinations to strengthen the wear resistance of composite abrasion resistance material simultaneously.
High-lift slag stock pump for large flow, when pump off-design operating mode is moved, adopt double-entry impeller can produce very large radial force, the main shaft and the bearing damage that easily cause cantilever, at this moment can on the pump housing is positioned at the radial position of impeller outlet, more than 2 or 2 discharge ports be evenly set, so that the radial force that impeller is subject to is in a basic balance, thus the reliability of raising main shaft and bearing.
For the medium lift slag stock pump of small flow, because impeller force in radial is less, only on the pump housing is positioned at the radial position of impeller outlet, the requirement that 1 discharge port can meet reliability is evenly set.
The invention has the beneficial effects as follows: composite abrasion resistance material parts tool has good wearability, metallic material parts has good mechanical strength, the impeller combining with bi-material, pump cover and the pump housing, not only wear resistance is compared with the significantly improve of antifriction metal (AFM) or rubber manufacture, mechanical strength also can meet the demands, thereby can significantly improve the life-span of flow passage part; Adopt composite abrasion resistance material and metallic material combination to manufacture enclosed double-entry impeller, not only feasible in technique and cost is controlled; Enclosed double-entry impeller efficiency is high and easily realize high-liftly, produces hardly axial force during work, is conducive to improve the reliability of thrust-bearing; The runner arranging between the upper outside metal layer of the pump housing and intermediate metal layer, can reduce the flow velocity of slag slurry by the larger section of employing, thereby reduce wear, and obtain the longer life-span; Adopt almost complete equilibrium of the suffered axial force of slag stock pump of the present invention impeller when work, the stressed of main shaft and bearing is greatly improved, the selection of speed of pump can no longer be subject to the restriction of thrust-bearing limit speed, not only being conducive to slag stock pump realizes high-lift, also the specific speed that is conducive to improve pump, to raise the efficiency, also can make the reliability of complete machine be improved simultaneously.Though adopt the slag stock pump of manufacture of the present invention to have complex structure, shortcoming that manufacture cost is higher, these advantages of remarkable lifting of the raising of flow passage part life-time dilatation, reliability and performance, can make up these deficiencies to a great extent.
Accompanying drawing explanation
Form specification of the present invention a part, for further understanding accompanying drawing of the present invention, show the preferred embodiments of the present invention, and be used for illustrating the principle of the invention together with specification, schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the sectional view of the embodiment of the present invention 1;
Fig. 2 is that Fig. 1 is at the sectional drawing of A-A line;
Fig. 3 is that Fig. 1 is at the sectional drawing of B-B line;
Fig. 4 is the sectional view of the embodiment of the present invention 2;
Fig. 5 is the sectional view of the embodiment of the present invention 3;
Fig. 6 is the sectional view of the embodiment of the present invention 4.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
In the embodiment 1 shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4 and embodiment 2, the present invention includes: bearing portion assembly 2, main shaft 1, pump cover 3, the pump housing 5, impeller 6.
In the embodiment 1 shown in Fig. 1, Fig. 2 and Fig. 3, impeller 6 is combined by composite abrasion resistance material parts 601 and metallic material parts 602, pump cover 3 is arranged between impeller 6 and bearing part assembly 2, by composite abrasion resistance material parts 301 and metal parts 302, combined, on it, be provided with rear suction chamber 4; The pump housing 5 is combined by outer metal layer 503, liner composite abrasion resistance material layer 501 and intermediate metal layer 502, on it, be provided with the first discharge port 10, the second discharge port 11 that are evenly arranged, the radial force that this structure can balance impeller produces during work, improve the stressed of main shaft and bearing, to meet high-lift needs; Material feeding mouth 12 and front suction chamber 7 are all arranged on the pump housing 5; Between outer metal layer 503 and intermediate metal layer 502, be provided with the passage 504 connecting between supply pipe 12 and rear suction chamber 4; For reducing the wearing and tearing of outer metal layer 503 and intermediate metal layer 502, guarantee the life-span of the pump housing 5, the Peak Flow Rate of slag slurry in passage 504 is limited in below 1.5m/s.
In 2, the present invention includes in the embodiment shown in fig. 4: bearing portion assembly 2, main shaft 1, pump cover 3, the pump housing 5, impeller 6, impeller 6 is combined by composite abrasion resistance material parts 601 and metallic material parts 602; Pump cover 3 is arranged between impeller 6 and bearing portion assembly 2, by composite abrasion resistance material parts 301 and metal parts 302, is combined, and is provided with rear suction chamber 4 on it; The pump housing 5 is combined by outer metal layer 503 and liner composite abrasion resistance material layer 501 and intermediate metal layer 502; For improving the manufacturability of the pump housing, be provided with the second pump cover 8; The second pump cover 8 is combined by metal parts 802 and composite abrasion resistance material parts 801; Front suction chamber 7 is arranged on the second pump cover 8, is provided with the passage 504 connecting between material feeding mouth 12 and rear suction chamber 4 between the outer metal layer 503 on the pump housing 5 and intermediate metal layer 502.
In 3, the present invention includes in the embodiment shown in fig. 5: bearing portion assembly 2, main shaft 1, pump cover 3, the pump housing 5, impeller 6, impeller 6 is combined by composite abrasion resistance material parts 601 and metallic material parts 602; Pump cover 3 is arranged between impeller 6 and material feeding mouth 12, by composite abrasion resistance material parts 301 and metal parts 302, is combined, and is provided with front suction chamber 7 on it; The pump housing 5 is combined by outer metal layer 503 and liner composite abrasion resistance material layer 501 and intermediate metal layer 502: rear suction chamber 4 is arranged on the pump housing 5, is provided with the passage 504 connecting between material feeding mouth 12 and rear suction chamber 4 between the outer metal layer 503 on the pump housing 5 and intermediate metal layer 502.
In the embodiment 4 described in Fig. 6, the present invention includes: bearing portion assembly 2, main shaft 1, pump cover 3, the pump housing 5, impeller 6, impeller 6 is combined by composite abrasion resistance material parts 601 and metallic material parts 602; Pump cover 3 is arranged between impeller 6 and bearing portion assembly 2, by composite abrasion resistance material parts 301 and metal parts 302, is combined, and is provided with rear suction chamber 4 on it; The pump housing 5 is combined by outer metal layer 503 and liner composite abrasion resistance material layer 501 and intermediate metal layer 502; Front suction chamber 7 is arranged on the pump housing 5, is provided with the passage 504 connecting between material feeding mouth 12 and rear suction chamber 4 between the outer metal layer 503 on the pump housing 5 and intermediate metal layer 502, and the footpath that is positioned at impeller 6 outlets at the pump housing 5 upwards only arranges a discharge port 14.The advantage of this structure is that pump housing outside does not need complicated pipeline to connect, but the suffered radial force imbalance of impeller is only suitable for less in flow of lift medium operating mode.
In above-mentioned 4 embodiments of this specification, main shaft is all arranged horizontally.Obviously, if in other embodiments main shaft is arranged vertically, also can obtain same effect, within therefore such conversion drops on protection scope of the present invention equally.
Claims (6)
1. a double suction slag stock pump, by bearing portion assembly, main shaft, impeller, the pump housing, pump cover etc., formed, it is characterized in that: impeller is enclosed double-entry impeller, in a side of an one suction port, be provided with bearing part group, in a side of its another suction port, be provided with material feeding mouth; Suction chamber before being provided with between impeller and material feeding mouth, suction chamber after being provided with between impeller and bearing portion assembly; The pump housing is multi-layer structure, and its outer installment has outer metal layer, and inside is provided with liner composite abrasion resistance material layer, is provided with intermediate metal layer outside between metal layer and liner composite wear-resistant layer; Between the outer metal layer of the pump housing and intermediate metal layer, be provided with the runner of suction chamber from material feeding mouth leads to; Pump cover is combined by composite abrasion resistance material parts and metallic material parts; The Main Ingredients and Appearance of described composite abrasion resistance material is the abrasive grain of 40%～95% weight and the resinoid bond of 5%～60% weight; Described abrasive material is silicon nitride, silicon carbide, corundum, garnet, emery, zirconic a kind of or wherein several combination.
2. a kind of double suction slag stock pump according to claim 1, is characterized in that: at the pump housing, be positioned in the radial position of impeller outlet and be evenly provided with more than 2 or 2 discharge ports.
3. a kind of double suction slag stock pump according to claim 1, is characterized in that: the radial position that is positioned at impeller outlet at the pump housing is provided with a discharge port.
4. according to a kind of double suction slag stock pump described in claim 2 or 3, it is characterized in that: pump cover is arranged between impeller and bearing portion assembly, is provided with rear suction chamber on it; Front suction chamber is arranged on the pump housing.
5. according to a kind of double suction slag stock pump described in claim 2 or 3, it is characterized in that: pump cover is arranged between impeller and bearing portion assembly, is provided with rear suction chamber on it; Between impeller and material feeding mouth, be provided with the second pump cover; The second pump cover is formed by metal parts and composite abrasion resistance material component combination; Front suction chamber is arranged on the second pump cover.
6. according to a kind of double suction slag stock pump described in claim 2 or 3, it is characterized in that: pump cover is arranged between impeller and material feeding mouth, is provided with front suction chamber on it; Rear suction chamber is arranged on the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309326.2A CN104121204A (en) | 2014-06-25 | 2014-06-25 | Double-suction slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309326.2A CN104121204A (en) | 2014-06-25 | 2014-06-25 | Double-suction slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104121204A true CN104121204A (en) | 2014-10-29 |
Family
ID=51766766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410309326.2A Pending CN104121204A (en) | 2014-06-25 | 2014-06-25 | Double-suction slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104121204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370621A (en) * | 2015-11-11 | 2016-03-02 | 苏细调 | Novel water pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782073A (en) * | 2010-03-16 | 2010-07-21 | 肖琼 | Vertical-type wear resistant submerged pump |
| CN201599246U (en) * | 2009-12-18 | 2010-10-06 | 大耐泵业有限公司 | Large-flow long-shaft submerged pump |
| JP2012097696A (en) * | 2010-11-04 | 2012-05-24 | Furukawa Industrial Machinery Systems Co Ltd | Volute pump device |
| CN102588321A (en) * | 2012-02-23 | 2012-07-18 | 肖琼 | Wear-resisting pump body and pump cover |
| CN203548241U (en) * | 2013-11-15 | 2014-04-16 | 上海奥一泵业制造有限公司 | Multifunctional double-suction type self-priming pump |
-
2014
- 2014-06-25 CN CN201410309326.2A patent/CN104121204A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201599246U (en) * | 2009-12-18 | 2010-10-06 | 大耐泵业有限公司 | Large-flow long-shaft submerged pump |
| CN101782073A (en) * | 2010-03-16 | 2010-07-21 | 肖琼 | Vertical-type wear resistant submerged pump |
| JP2012097696A (en) * | 2010-11-04 | 2012-05-24 | Furukawa Industrial Machinery Systems Co Ltd | Volute pump device |
| CN102588321A (en) * | 2012-02-23 | 2012-07-18 | 肖琼 | Wear-resisting pump body and pump cover |
| CN203548241U (en) * | 2013-11-15 | 2014-04-16 | 上海奥一泵业制造有限公司 | Multifunctional double-suction type self-priming pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370621A (en) * | 2015-11-11 | 2016-03-02 | 苏细调 | Novel water pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20141029 |