CN1266950A - Blade wheel for sand-discharging water pump - Google Patents
Blade wheel for sand-discharging water pump Download PDFInfo
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- CN1266950A CN1266950A CN 99113517 CN99113517A CN1266950A CN 1266950 A CN1266950 A CN 1266950A CN 99113517 CN99113517 CN 99113517 CN 99113517 A CN99113517 A CN 99113517A CN 1266950 A CN1266950 A CN 1266950A
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- blade
- impeller
- back shroud
- angle
- sand
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Abstract
A blade wheel of sand-discharging water pump technically features that the included angle between the working surface of blade at the output of blade wheel and the back cover plate is obtuse angle, and said blade may be short one or small one. Said blades can make the water and sand have axial component of speed toward front cover plate when they flow out of blade wheel, so the sand particles are uniformly distributed to prevent the sand particles from the impacting and abrading the pump body
Description
The present invention relates to a kind of blade wheel for sand-discharging water pump, be applicable to and carry sand-discharging water pump or the transh pump that contains solid abrasive particles in the liquid, be particularly useful for Under Water Pumps, submersible pump draws water and arranges sand.
Existing Under Water Pumps, submersible pump are in order to discharge solid unobstructedly, and its pump housing delivery chamber all is annular, and especially the pump housing delivery chamber of Pump for well is a complete ring.The side of this pump housing has outlet passage.During pump working, solid abrasive particles, as the grains of sand along with after current enter suction eye, under the inertial force effect, the grains of sand at first are flushed on the back shroud of impeller, again along back shroud from impeller outlet directive pump housing perisporium, make the internal surface of the pump housing perisporium ring-type vee-cut occur.Inspection shows that initial position that forms of vee-cut and back shroud of impeller are in same plane.In case the ring-type vee-cut occurs, just can amass the grains of sand of full high-speed slide in the groove, therefore, the pump housing can be worn out early.
The purpose of this invention is to provide a kind of blade wheel for sand-discharging water pump, it can make the grains of sand and water when flowing out impeller, has obtained to point to the axial component velocity of front shroud direction.Thereby the grains of sand concentration that gathers originally on the back shroud of impeller is reduced, and the grains of sand distribution that impeller outlet is flowed out keeps evenly, to reduce grains of sand impact and the wearing and tearing that the pump housing perisporium, particularly back shroud of impeller pump housing inner circle wall pointed is too concentrated.
The technical solution adopted in the present invention is that the front side of vane of blade wheel for sand-discharging water pump is the obtuse angle at the angle of impeller outlet place and back shroud at least.Its measuring position is in front side of vane contact current one side.
The impeller channel of general sand-discharging water pump is more roomy, and the number of blade is less, can increase short blade between two blades.The starting point of short blade is between the inlet and outlet of impeller, and is terminal at impeller outlet.The short blade working surface is the obtuse angle at the angle of impeller outlet place and back shroud at least.Its measuring position is in short blade working surface contact current one side.
When the sand-discharging water pump flow is big, when the width b of impeller is big, can lay short blade on back shroud between two blades, the width b ' of short blade is less than the width b of normal blade, and promptly short blade is not connected with front shroud.The working surface of short blade is the obtuse angle at the angle of impeller outlet place and back shroud at least.Its measuring position is in short front side of vane contact current one side.
In such scheme, the front shroud external diameter of impeller can be less than back shroud and impeller outer diameter, and promptly at this moment the little front shroud of car can expose partial blade.The blade side of being exposed is the inclined-plane that tilts, and the direction that it tilts is identical at the true dip direction at impeller outlet place with blade.The front shroud of impeller and back shroud external diameter also can be all less than the blade external diameters, i.e. the little front and rear cover plate of car simultaneously.At this moment, the blade that is exposed has been axial--flow blading in fact.This axial--flow blading can be foregoing linear leaf, or short blade, or short blade.Said linear leaf is exactly that the starting point of common indication is at impeller eye, terminal blade at impeller outlet.
Foregoing back shroud of impeller all is a plane type, and described front side of vane and blade all are straight lines at the intersection of the section at impeller outlet place.When back shroud is protruding, concave curved surface, perhaps the cut-out line of front side of vane at the impeller outlet place is protruding, sag vertical curve, and it is the angle of straight line a and plane b that the angle of said front side of vane and back shroud can be depicted as, wherein:
1, front side of vane is exactly straight line a with two cross surface lines that front shroud internal surface, back shroud internal surface intersect gained at the line of two end points at impeller outlet place respectively;
2, a cross surface line of the crossing gained of front side of vane and back shroud internal surface has an end points at the impeller outlet place, cross this end points, and the plane perpendicular to the pump shaft line is plane b, and plane b is actual to be impeller lower cover plate internal surface maximum diameter place, the plane that the current high speed centrifugation penetrates in the impeller.At this moment, blade body is acute angle one side at straight line a and plane b angle.Said blade can be linear leaf, perhaps short blade.If back shroud of impeller is protruding, concave curved surface, the cut-out line of short front side of vane at the impeller outlet place is protruding, sag vertical curve, and it is the angle of straight line c and plane b that the angle of said short front side of vane and back shroud can be depicted as.Wherein:
(1) short front side of vane is exactly straight line c with two cross surface lines of the Plane intersects gained at the place, side of back shroud internal surface, the half-open side of short blade at the line of two end points at impeller outlet place respectively;
(2) a cross surface line of the crossing gained of short front side of vane and back shroud internal surface has an end points at the impeller outlet place.Cross this end points, and be plane b perpendicular to the plane of pump shaft line;
At this moment, short blade body (5) is acute angle one side at straight line c and plane b angle.
In the technique scheme, the blade of the various types angle at the impeller outlet place at least is the obtuse angle, when water pump just changes, and the axial component velocity that the water that flows out from impeller outlet and the grains of sand all can obtain to point to the front shroud direction.After adopting short blade, short blade in the impeller, increased the chance that produces above-mentioned axial component velocity.And dwindle the front shroud external diameter, or dwindle the external diameter of front and rear cover plate simultaneously, make blade-section exposed, the above-mentioned axial component velocity that is produced can be more obvious, and axially the numerical value of component velocity can be bigger.Therefore, technique scheme can realize the purpose of this utility model fully.
Advantage of the present invention is because impeller can make solid abrasive particles such as the grains of sand produce axial component velocity, and the grains of sand that impeller outlet is flowed out distribute and are tending towards evenly, finally can be again because the grains of sand too concentrate impact pump housing perisporium to make the pump housing worn out too early.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1: the present invention's one sharp blade wheel for sand-discharging water pump schematic perspective view of planting embodiment.
Fig. 2: the blade wheel for sand-discharging water pump axial plane schematic representation of an embodiment of the present invention.
Fig. 3: the blade wheel for sand-discharging water pump of an embodiment of the present invention has the short blade floor map.
Fig. 4: the blade wheel for sand-discharging water pump of an embodiment of the present invention has short blade axial plane schematic representation.
Fig. 5: the blade wheel for sand-discharging water pump of an embodiment of the present invention has short blade plane schematic representation.
Fig. 6: the blade wheel for sand-discharging water pump of an embodiment of the present invention has short blade axial plane schematic representation.
Fig. 7: the blade wheel for sand-discharging water pump of an embodiment of the present invention dwindles front shroud axial plane schematic representation.
Fig. 8: the blade wheel for sand-discharging water pump of an embodiment of the present invention dwindles forward and backward cover plate axial plane schematic representation simultaneously.
Fig. 9: the blade wheel for sand-discharging water pump of an embodiment of the present invention dwindles the front and rear cover plate schematic perspective view simultaneously.
Figure 10: the recessed schematic perspective view of blade wheel for sand-discharging water pump blade section of an embodiment of the present invention.
Figure 11: the recessed axial plane schematic representation of the blade wheel for sand-discharging water pump back shroud of an embodiment of the present invention.
In Fig. 1, the intersection (12) of the working surface (6) of blade (2) on the section in outlet port is that relative back shroud of impeller (1) tilts.At this moment the shape of the blade (2) among the shape of blade (2) on planimetric map and Fig. 3, Fig. 5 is identical.Fig. 2 is the impeller axial plane figure of Fig. 1.
Fig. 3 and Fig. 4 are respectively the planimetric map and the axial plane figure of another kind of impeller, and this impeller has short blade (4).
Fig. 5 and Fig. 6 are respectively paddle wheel plane figure and the axial plane figure that short blade is arranged.The width of short blade (b ') is less than the width b of the blade (2) of common indication among the figure.At this moment, if remove blade (2) and front shroud (3), short blade (5) is exactly a half-opened impeller with the combination of back shroud (1).Among Fig. 6, the side of a half-open side (16) are in the runner that current pass through.Front shroud of impeller among Fig. 7 (3) external diameter is less than back shroud (1) external diameter and blade external diameter.Blade (2) has the side (7) that exposes out.Exposing this part of blade (2) among Fig. 7, is the equal of half-opened impeller.Generally, be equivalent to the combination of a centrifugal impeller and a half-opened impeller.Exposed blade side (7) is the inclined-plane, and its true dip direction is identical at the true dip direction of impeller outlet (9) with blade (2).Among Fig. 8, the external diameter of front shroud of impeller (3) and back shroud (1) is all less than the external diameter of blade (2).At this moment, the blade that exposes of blade (2) is equivalent to axial--flow blading.Generally, be equivalent to the combination of a centrifugal impeller and an aial flow impeller.In the various embodiments described above, various blades are the obtuse angles at the angle that impeller outlet (9) is located at least, and its measuring position is in front side of vane (6) contact current one side.Therefore, when impeller just changes, the axial component velocity that the water that flows out from impeller outlet and the grains of sand all can obtain to point to front shroud, among Fig. 2, Fig. 4, Fig. 6, Fig. 7, the impeller axial plane figure shown in Figure 8, bonnet (1) all is a plane type.The cut-out line that front side of vane among Figure 10 (6) is located at impeller outlet (9) is sag vertical curve (12 ').The intersection point (10) of sag vertical curve (12 ') and front shroud outlet, with the line of the intersection point (11) of back shroud (1) outlet be straight line a.In Figure 11, front side of vane (6) has intersection point (11) with back shroud (1 ') in the outlet port.Back shroud among Figure 11 (1 ') is the concave cone face.Straight line b ' was an intersection point (11) and perpendicular to the projection of the plane b of pump shaft line (15).Figure 11 is the axial plane figure of impeller shown in Figure 10.Said front side of vane (6) is exactly the angle of straight line a and plane b with the angle of post-planking cover (1) in the outlet port, and at this moment blade (2) body is acute angle one side at straight line a and plane b angle.The said front side of vane in front (6) is the angle with back shroud in impeller outlet place (9), in Fig. 7, the angle that is a side of front side of vane (6) contact current is 115 °, therefore, blade body is 65 ° of one side at front side of vane (6) with the angle of back shroud (1) angle at the impeller outlet place.In Fig. 7, the blade side of being exposed (7) is 175 ° with the angle of back shroud (1).Front side of vane (6), side (7) and after current contact; can make the grains of sand contained in current and the water obtain to point to the axial component velocity of front shroud (3) direction; the grains of sand that impeller outlet flows out are evenly distributed, thereby reduce impact and the wearing and tearing that the grains of sand are too concentrated pump housing inner circle wall.
Claims (8)
1, a kind of blade wheel for sand-discharging water pump, it comprises front shroud (3), back shroud (1) and blade (2), it is characterized in that it is that the angle that front side of vane contacts current one side is the obtuse angle that front side of vane (6) is located with the angle of back shroud (1) at impeller outlet (9) at least.
2, blade wheel for sand-discharging water pump as claimed in claim 1, it is characterized in that described impeller has starting point between the inlet (8) and outlet (9) of impeller, terminal short blade (4) in impeller outlet (9), the working surface (6 ') of short blade (4) are that to contact current one side be the obtuse angle to short blade working surface (6 ') at the impeller outlet place with the angle of back shroud (1) at least.
3, blade wheel for sand-discharging water pump as claimed in claim 1, it is characterized in that having in the described impeller the short blade (5) that is placed on the back shroud (1), the width b ' of short blade (5) is less than blade (2) width b, and (it is that the angle that short front side of vane contacts current one side is the obtuse angle that 6 ") are located with the angle of back shroud (1) at impeller outlet (9) at least to the working surface of short blade (5).
4, as claim 1,2 or 3 described blade wheel for sand-discharging water pump, the external diameter that it is characterized in that described front shroud of impeller (3) is less than the external diameter of back shroud (1) and the external diameter of blade (2).
5, as claim 1,2 or 3 described blade wheel for sand-discharging water pump, the external diameter that it is characterized in that described front shroud of impeller (3) is less than the external diameter of back shroud (1) and the external diameter of blade (2), and the blade side of being exposed (7) is true dip direction and the identical inclined-plane of the true dip direction of front side of vane (6) at the impeller outlet place.
6, as claim 1,2 or 3 described blade wheel for sand-discharging water pump, the external diameter that it is characterized in that described front shroud of impeller (3) and back shroud (1) is all less than the external diameter of blade (2), the blade that is exposed is an axial--flow blading, said axial--flow blading is a linear leaf, or short blade (4), or short blade (5), said linear leaf be starting point in impeller eye (8), terminal blade (2) in impeller outlet (9).
7, as claim 1,2,3,4,5 or 6 described blade wheel for sand-discharging water pump, it is characterized in that described back shroud is protruding, concave curved surface (14), perhaps front side of vane (6) is protruding, sag vertical curve (12 ') at the section of impeller outlet (9), said front side of vane (6) is the angle of straight line a and plane b with the angle of back shroud (1), wherein:
(1) two end points (10) located at impeller outlet (9) of front side of vane (6) two cross surface lines intersecting gained with front shroud (3) internal surface, back shroud (1) internal surface respectively and the line of (11) are straight line a;
(2) front side of vane (6) and back shroud (a 1) internal surface cross surface line intersecting gained has been located an end points (11) at impeller outlet (9), crosses this end points (11) and is plane b perpendicular to the plane of pump shaft line (15);
Blade body is acute angle one side at the angle of straight line a and plane b, and said blade is a linear leaf, or short blade (4), said linear leaf be starting point in impeller eye (8), terminal blade (2) in impeller outlet (9).
8, as claim 1,2,3,4,5 or 6 described blade wheel for sand-discharging water pump, the back shroud that it is characterized in that described short blade place is protruding, concave curved surface (14), perhaps short front side of vane (section located at impeller outlet (9) of 6 ") is protruding, sag vertical curve; said front side of vane (6) is the angle of straight line c and plane b with the angle of back shroud (1), wherein:
(1) (two end points (11) that 6 ") are located at impeller outlet (9) with two cross surface lines of the Plane intersects gained at the place, side (16) of back shroud (1) internal surface, the half-open side of short blade respectively and the line of (17) are straight line c to short front side of vane;
(2) (6 ") and back shroud (1) internal surface intersect the end points (11) that a cross surface line of gained is located at impeller outlet (9) to short front side of vane, cross this end points (11), and are plane b perpendicular to the plane of pump shaft line (15); Short blade body (5) is acute angle one side at straight line c and plane b angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991135172A CN1165687C (en) | 1999-03-11 | 1999-03-11 | Blade wheel for sand-discharging water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991135172A CN1165687C (en) | 1999-03-11 | 1999-03-11 | Blade wheel for sand-discharging water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1266950A true CN1266950A (en) | 2000-09-20 |
| CN1165687C CN1165687C (en) | 2004-09-08 |
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ID=5276698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991135172A Expired - Fee Related CN1165687C (en) | 1999-03-11 | 1999-03-11 | Blade wheel for sand-discharging water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1165687C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971930A (en) * | 2016-07-11 | 2016-09-28 | 川源(中国)机械有限公司 | Centrifugal pump capable of improving flow capacity |
-
1999
- 1999-03-11 CN CNB991135172A patent/CN1165687C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971930A (en) * | 2016-07-11 | 2016-09-28 | 川源(中国)机械有限公司 | Centrifugal pump capable of improving flow capacity |
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| Publication number | Publication date |
|---|---|
| CN1165687C (en) | 2004-09-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040908 Termination date: 20170311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |