CN211343475U - Sand suction pump impeller - Google Patents
Sand suction pump impeller Download PDFInfo
- Publication number
- CN211343475U CN211343475U CN201922229642.XU CN201922229642U CN211343475U CN 211343475 U CN211343475 U CN 211343475U CN 201922229642 U CN201922229642 U CN 201922229642U CN 211343475 U CN211343475 U CN 211343475U
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- cover plate
- upper cover
- main shaft
- suction pump
- blades
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Abstract
The utility model belongs to the field of mechanical pumps, and particularly discloses a sand suction pump impeller, which comprises a main shaft, an upper cover plate, a lower cover plate, a group of blades and a stirring cone; lower apron and main shaft body coupling, a set of blade is fixed in down on the apron around the center of apron down an even body, the upper cover lid closes on the blade and with blade body coupling, the center of upper cover sets up the circular shape runner mouth, the focus of lower apron all is located the rotation axis of main shaft with the focus of upper cover, the common passageway that forms of apron blade is the runner under the upper cover, stir the awl and include toper seat and helical blade, helical blade centers on toper seat surface and with toper seat body coupling, toper seat detachably is connected with the main shaft. The utility model discloses a inhale sand pump impeller, difficult wearing and tearing, it is convenient to maintain, and the during operation medium flow is stable smooth and easy, and the efficiency is higher.
Description
Technical Field
The utility model belongs to the mechanical pump field, more specifically say, relate to a inhale sand pump impeller.
Background
The sand pump is a common device for conveying solid particles, and has wide application in the fields of river channel dredging, dredging and dike consolidating, coal mining, oil and gas drilling and the like, and the concentration of a conveying medium can reach more than 40 percent. However, in the actual use process, the abrasion of the impeller of the sand suction pump is generally serious, so that the problems of performance reduction, energy consumption increase and the like of the sand suction pump in the long-term use process are caused. The reasons for wear of the impeller of the sand suction pump are manifold. On one hand, because the conveyed medium contains a large amount of particles, the impeller and the particles continuously rub at high speed during operation, so that abrasion is caused. On the other hand, the sand suction pump is easy to generate cavitation during operation due to the fact that the conveyed medium is high in viscosity and poor in flowability. Cavitation mainly occurs at the moment when a medium flows from an impeller suction inlet to a flow passage in an impeller, the medium is instantaneously converted into high pressure from negative pressure in the process, part of bubbles generated by volatile substances and soluble substances converted into a gaseous state from the negative pressure disappear instantaneously, and in addition, other insoluble bubbles are quickly compressed, so that countless tiny micro liquid columns directly collide against blades to cause serious damage. Therefore, how to improve the design of the impeller to reduce the wear and further improve the service life is an important proposition with practical significance.
Disclosure of Invention
Not enough to prior art exists, the utility model provides a inhale sand pump impeller should inhale sand pump impeller, carries out redesign through the structure of inhaling the entrance to the impeller, has improved the flow state of medium in sunction inlet department, especially is showing the too high pressure gradient that has reduced the medium and has produced through the in-process part of impeller runner crossing and flow to the impeller in.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an impeller of a sand suction pump comprises a main shaft, an upper cover plate, a lower cover plate, a group of blades and a stirring cone; the lower cover plate is integrally connected with the main shaft, a group of blades are arranged around the center of the lower cover plate and are uniformly and integrally fixed on the lower cover plate, the upper cover plate covers the blades and is integrally connected with the blades, a circular runner port is arranged at the center of the upper cover plate, the gravity center of the lower cover plate and the gravity center of the upper cover plate are both positioned on the rotating shaft of the main shaft, a channel formed by the upper cover plate, the lower cover plate and the blades together and diverging from the center to the periphery is a flow channel, the stirring cone comprises a conical seat and spiral blades, the spiral blades are arranged around the surface of the conical seat and are integrally connected with the conical seat, and the conical seat is detachably connected with the main shaft.
The utility model relates to a sand suction pump impeller stirs the awl in the setting of flow crossing department. On the first hand, the flow state of medium flow passing through the front and back of the flow passage port is changed, when the conventional impeller works, the medium directly collides with the impeller along the direction of a rotating shaft, and the problems of unstable working state of the impeller, disordered medium flow, overlarge local pressure gradient and the like are easily caused; after the stirring cone is arranged, media flow to the front of the impeller along the direction of the rotating shaft and are dispersed to the periphery along the surface of the conical seat, the media flowing axially are gradually changed into the media flowing in the periphery in a dispersing manner, and the media are prevented from vertically colliding to the impeller. As the flowing state of the medium is smoother, the abrasion is effectively restrained, and the pressure gradient is obviously reduced. In the second aspect, the spiral blades are arranged on the surface of the stirring cone, so that the medium can be stirred into the flow channel opening during rotation, the state that the medium is driven to flow into the flow channel opening by the conventional impeller only through the negative pressure at the flow channel opening is changed, and the pressure gradient at the flow channel opening is remarkably relieved. After improvement, even if the medium has high viscosity and poor fluidity, the pressure gradient at the runner port can be obviously reduced, thereby effectively inhibiting the occurrence of cavitation erosion. In addition, even if the impeller still probably produces slight wearing and tearing in the long-term operation process, wearing and tearing also mainly take place on stirring the awl to the blade of protection effectively only need lift off and change stir the awl can, thereby effectively reduced the maintenance cost, improved life.
Further, in the sand suction pump impeller, an included angle a between the bottom contour line of the conical seat and the main shaft rotating shaft is 32-35 degrees; the included angle b between the top contour line of the conical seat and the spindle rotating shaft is 6-10 degrees, and the ratio of the height of the conical seat to the diameter of the bottom surface circle is 2.5-2: 1. The shape of the conical seat is optimized, the process that the medium is transferred from axial movement to divergent movement towards the periphery is smooth, and reasonable acting efficiency of the helical blade is considered.
Furthermore, the impeller of the sand suction pump is positioned at the inlet of the runner, and the included angle c between the contour line of the lower cover plate and the rotating shaft of the main shaft is 40-46 degrees; the included angle d between the contour line of the upper cover plate and the rotating shaft of the main shaft at the inlet of the flow channel is 25-30 degrees. The shape of the runner port is optimized, so that the medium flows more smoothly, and the medium is prevented from flowing off from the surface of the lower cover plate.
Furthermore, in the sand suction pump impeller, the back of the blade is also provided with a streamline rectifying bulge, so that turbulence such as defluidization and vortex backflow induced by a medium on the back of the blade is prevented.
Furthermore, according to the sand suction pump impeller, the bottom of the conical seat is connected with the top of the main shaft in a threaded fit mode, and therefore the impeller is convenient to detach and install.
Further, in the sand suction pump impeller, the spiral blade rotates by 900 degrees from the top to the bottom of the conical seat, the shape of the spiral blade is optimized to improve the work efficiency of the spiral blade, and the spiral blade is matched with the rated flow during normal work.
Further, in the sand suction pump impeller, the farthest distance between the spiral blade and the main shaft rotating shaft is h, and the radius of the circular opening of the upper cover plate is r1Preferably, h: r1=5:8。
Further, in the impeller for a sand suction pump, the radius of the circular opening of the upper cover plate is r1The radius of the bottom surface circle of the conical seat is r2Preferably, r1: r2=2.8:1。
Further, in the impeller for a sand suction pump, the radius of the circular opening of the upper cover plate is r1The distance between the tail end of the blade and the rotating shaft of the main shaft is r3Preferably, r1: r3=9:16。
Further, above-mentioned sand suction pump impeller, its characterized in that: the blades (4) are backward-bent blades, and the number of the blades is preferably 6.
Has the advantages that: to sum up, compare with prior art, inhale sand pump impeller, difficult wearing and tearing, it is convenient to maintain, the during operation medium flow is stable smooth and easy, the efficiency is higher.
Drawings
Fig. 1 is a front view of an impeller of a sand suction pump according to the present invention;
fig. 2 is a top view of the impeller of the sand suction pump according to the present invention;
FIG. 3 is a schematic view of the stirring cone of the present invention;
FIG. 4 is a schematic view of the impeller body portion of the present invention;
fig. 5 is a schematic view of a blade of an impeller of a sand suction pump according to the present invention.
In the figure, a main shaft 1, an upper cover plate 2, a lower cover plate 3, 4 blades, 5 stirring cones, 41 rectifying bulges, 51 conical seats and 52 helical blades.
Detailed Description
The invention is further explained by combining the attached drawings and the specific embodiments.
Example 1
An impeller of a sand suction pump is shown in figures 1 to 4 and comprises a main shaft 1, an upper cover plate 2, a lower cover plate 3, a group of blades 4 and a stirring cone 5; the lower cover plate 3 is integrally connected with the main shaft 1, a group of blades 4 surround the center of the lower cover plate 3 and are uniformly and integrally fixed on the lower cover plate 3, the upper cover plate 2 covers the blades 4 and is integrally connected with the blades, a circular runner port is arranged at the center of the upper cover plate 2, the gravity center of the lower cover plate 3 and the gravity center of the upper cover plate 2 are both positioned on the rotating shaft of the main shaft 1, the channel formed by the blades 4 is a runner in the upper cover plate 2, the stirring cone 5 comprises a conical seat 51 and spiral blades 52, the spiral blades 52 surround the surface of the conical seat 51 and are integrally connected with the conical seat 51, and the conical seat 51 is detachably connected with the main shaft 1.
Example 2
An impeller of a sand suction pump is shown in figures 1 to 4 and comprises a main shaft 1, an upper cover plate 2, a lower cover plate 3, a group of blades 4 and a stirring cone 5; the lower cover plate 3 is integrally connected with the main shaft 1, a group of blades 4 surround the center of the lower cover plate 3 and are uniformly and integrally fixed on the lower cover plate 3, the upper cover plate 2 covers the blades 4 and is integrally connected with the blades, a circular runner port is arranged at the center of the upper cover plate 2, the gravity center of the lower cover plate 3 and the gravity center of the upper cover plate 2 are both positioned on the rotating shaft of the main shaft 1, the channel formed by the blades 4 is a runner in the upper cover plate 2, the stirring cone 5 comprises a conical seat 51 and spiral blades 52, the spiral blades 52 surround the surface of the conical seat 51 and are integrally connected with the conical seat 51, and the conical seat 51 is detachably connected with the main shaft 1.
In this embodiment, an included angle a between the bottom contour line of the conical seat 51 and the rotation axis of the spindle 1 is 32-35 °; the included angle b between the top contour line of the conical seat 51 and the rotating shaft of the spindle 1 is 6-10 degrees, and the ratio of the height of the conical seat 51 to the diameter of the bottom surface circle is 2.5-2: 1.
In the embodiment, an included angle c between the contour line of the lower cover plate 3 at the inlet of the flow channel and the rotating shaft of the main shaft 1 is 40-46 degrees; the included angle d between the contour line of the upper cover plate 2 and the rotating shaft of the main shaft 1 at the inlet of the flow channel is 25-30 degrees.
Example 3
An impeller of a sand suction pump is shown in figures 1 to 5 and comprises a main shaft 1, an upper cover plate 2, a lower cover plate 3, a group of blades 4 and a stirring cone 5; the lower cover plate 3 is integrally connected with the main shaft 1, a group of blades 4 surround the center of the lower cover plate 3 and are uniformly and integrally fixed on the lower cover plate 3, the upper cover plate 2 covers the blades 4 and is integrally connected with the blades, a circular runner port is arranged at the center of the upper cover plate 2, the gravity center of the lower cover plate 3 and the gravity center of the upper cover plate 2 are both positioned on the rotating shaft of the main shaft 1, the channel formed by the blades 4 is a runner in the upper cover plate 2, the stirring cone 5 comprises a conical seat 51 and spiral blades 52, the spiral blades 52 surround the surface of the conical seat 51 and are integrally connected with the conical seat 51, and the conical seat 51 is detachably connected with the main shaft 1.
In this embodiment, an included angle a between the bottom contour line of the conical seat 51 and the rotation axis of the spindle 1 is 32 degrees; the included angle b between the top contour line of the conical seat 51 and the rotating shaft of the spindle 1 is 8 degrees, and the ratio of the height of the conical seat 51 to the diameter of the bottom surface circle is 2.5: 1.
In the embodiment, an included angle c between the contour line of the lower cover plate 3 at the inlet of the flow channel and the rotating shaft of the main shaft 1 is 45 degrees; and the included angle d between the contour line of the upper cover plate 2 and the rotating shaft of the main shaft 1 at the inlet of the flow channel is 26 degrees.
In this embodiment, the back of the blade 4 is further provided with a streamline rectifying protrusion 41.
In this embodiment, the bottom of the conical seat 51 is connected with the top of the spindle 1 through a screw thread fit.
In this embodiment, the helical blade 52 rotates 900 ° from the top to the bottom of the conical seat 51.
In this embodiment, the farthest distance between the helical blade 52 and the rotation axis of the spindle 1 is h, and the radius of the circular opening of the upper cover plate 2 is r1，h: r1=5:8。
In this embodiment, the radius of the circular opening of the upper cover plate 2 is r1The radius of the bottom circle of the conical seat 51 is r2，r1: r2=2.8:1。
In this embodiment, the radius of the circular opening of the upper cover plate 2 is r1The distance between the tail end of the blade 4 and the rotating shaft of the main shaft 1 is r3，r1: r3=9:16。
In this embodiment, the blades 4 are backward-bent blades, and the number of the blades is 6.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a sand suction pump impeller which characterized in that: comprises a main shaft (1), an upper cover plate (2), a lower cover plate (3), a group of blades (4) and a stirring cone (5); the lower cover plate (3) is integrally connected with the main shaft (1), a group of blades (4) are uniformly and integrally fixed on the lower cover plate (3) around the center of the lower cover plate (3), the upper cover plate (2) covers the blades (4) and is integrally connected with the blades, a circular runner port is arranged at the center of the upper cover plate (2), the gravity center of the lower cover plate (3) and the gravity center of the upper cover plate (2) are both positioned on the rotating shaft of the main shaft (1), the passage formed by the upper cover plate (2), the lower cover plate (3) and the blades (4) is a flow passage, the mixing cone (5) comprises a cone-shaped seat (51) and a helical blade (52), the spiral blade (52) surrounds the surface of the conical seat (51) and is integrally connected with the conical seat (51), and the conical seat (51) is detachably connected with the main shaft (1).
2. The sand suction pump impeller as claimed in claim 1, wherein: the included angle a between the bottom contour line of the conical seat (51) and the rotating shaft of the spindle (1) is 32-35 degrees; the included angle b between the top contour line of the conical seat (51) and the rotating shaft of the spindle (1) is 6-10 degrees, and the ratio of the height of the conical seat (51) to the diameter of the bottom surface circle is 2.5-2: 1.
3. The sand suction pump impeller as claimed in claim 1, wherein: the included angle c between the contour line of the lower cover plate (3) and the rotating shaft of the main shaft (1) at the inlet of the flow channel is 40-46 degrees; the included angle d between the contour line of the upper cover plate (2) and the rotating shaft of the main shaft (1) at the entrance of the flow channel is 25-30 degrees.
4. The sand suction pump impeller as claimed in claim 1, wherein: the back of the blade (4) is also provided with a streamline rectifying bulge (41).
5. A sand suction pump impeller according to any one of claims 1 to 4, wherein: the bottom of the conical seat (51) is connected with the top of the main shaft (1) in a threaded fit manner.
6. The sand suction pump impeller as claimed in claim 5, wherein: the helical blade (52) rotates 900 degrees from the top to the bottom of the conical seat (51) together.
7. The sand suction pump impeller as claimed in claim 5, wherein: the farthest distance between the helical blade (52) and the rotating shaft of the main shaft (1) is h, and the radius of the circular opening of the upper cover plate (2) is r1，h: r1=5:8。
8. The sand suction pump impeller as claimed in claim 5, wherein: the radius of the round opening of the upper cover plate (2) is r1The radius of the bottom circle of the conical seat (51) is r2，r1: r2=2.8:1。
9. The sand suction pump impeller as claimed in claim 5, wherein: the radius of the round opening of the upper cover plate (2) is r1The distance between the tail end of the blade (4) and the rotating shaft of the main shaft (1) is r3，r1: r3=9:16。
10. The sand suction pump impeller as claimed in claim 5, wherein: the blades (4) are backward-bent blades, and the number of the blades is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922229642.XU CN211343475U (en) | 2019-12-13 | 2019-12-13 | Sand suction pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922229642.XU CN211343475U (en) | 2019-12-13 | 2019-12-13 | Sand suction pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211343475U true CN211343475U (en) | 2020-08-25 |
Family
ID=72097472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922229642.XU Expired - Fee Related CN211343475U (en) | 2019-12-13 | 2019-12-13 | Sand suction pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211343475U (en) |
-
2019
- 2019-12-13 CN CN201922229642.XU patent/CN211343475U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 Termination date: 20211213 |