CN216044460U - Non-blocking vortex pump structure - Google Patents
Non-blocking vortex pump structure Download PDFInfo
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- CN216044460U CN216044460U CN202122153827.4U CN202122153827U CN216044460U CN 216044460 U CN216044460 U CN 216044460U CN 202122153827 U CN202122153827 U CN 202122153827U CN 216044460 U CN216044460 U CN 216044460U
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Abstract
The utility model provides a non-blocking vortex pump structure which comprises an impeller, a pump shell, a rear pump cover, a shaft seal, a pump shaft and a bearing box assembly. The impeller type is designed into cantilever type full open claw type blades, the number of the blades is 3, the blades are uniformly distributed on the circumference, and the molded lines of the working surface and the back surface are straight lines; the pump shaft is connected with the impeller hub through threads; the pump shell is supported by the rear pump cover and is fixed on the bearing box component; the pump casing is internally provided with a volute flow passage, the cross section of the volute flow passage is in a shape of a round corner rectangle, and the inner edge and the outer edge of the pump casing are in a quasi-spiral line shape. The impeller of the vortex pump is simple in structure, the pump body is few in parts, convenient to assemble and maintain, good in pump passing capacity, capable of preventing blockage and suitable for conveying high-concentration slurry in the field of environmental protection dredging.
Description
Technical Field
The utility model belongs to the technical field of dredging pumps, hydromechanics and the like.
Background
Many river channel sediment and sewage ponds are seriously polluted, the sludge contains massive garbage, and microorganisms in the sludge act to generate a large amount of gas, so that the challenges are brought to dredging equipment. WhileVortex pumpThe main structure is characterized in that the impeller retracts in a pump cavity behind the pumping chamber, the rotation of the impeller forms through flow and circulating flow in a bladeless cavity in front of the blades, and the pump has the greatest advantages that conveyed solid matters do not pass through the impeller, so that the blockage-free performance is good, and the abrasion of the impeller is correspondingly reduced. The relative positions of the impeller and the pump chamber are generally three: (a) the impeller retracts to the back of the pump cavity completely, (b) the impeller extends into the pump cavity partially and (c) the impeller extends to the pump cavity completely; compared with a centrifugal pump, most of solid substances of the cyclone pump can directly flow out of the bladeless cavity without passing through the impeller. Besides no blockage and good passing performance, the vortex pump also has the following characteristics: the structure is simple, the manufacture is easy, and the operation is stable; the impeller and the pump shell have no fit clearance, and the problem of performance reduction caused by clearance increase does not exist; a slurry containing a gas may be delivered.
Disclosure of Invention
The non-clogging vortex pump for conveying high-concentration slurry can continuously convey the slurry containing high concentration, effectively prevent solid particles and garbage from blocking the pump, improve the slurry conveying efficiency of dredging engineering, and can be widely applied to dredging of rivers, lakes and reservoirs, river treatment of urban and rural areas and municipal sewage treatment engineering.
Aiming at the problems that bottom mud and a sewage tank of a river channel are seriously polluted, the sludge contains large garbage, and the centrifugal pump is frequently blocked by the garbage in the conveying process, the utility model provides the impeller and the vortex pump of the non-blocking vortex pump, so that the blocking probability is reduced, the passing capacity is increased, and the sludge conveying efficiency in a dredging project is improved.
The technical scheme of the utility model to be protected is as follows:
a non-blocking vortex pump structure comprises an impeller (1), a pump shell (2), a rear pump cover (3), a shaft seal (4), a pump shaft (5) and a bearing box assembly (6); the impeller (1) is connected to the bearing box assembly (6) through an impeller hub (1-2) and a pump shaft (5) in sequence; the pump cavity is formed by combining a cantilever type open impeller (1) and a single-channel pump shell 2, the impeller (1) positioned inside and the pump shell 2 outside are both cast by adopting wear-resistant materials, and the rear pump cover 3 is arranged on the rear side of the pump shell 2 so as to close the cavity; the suction chamber 2-1 and the pumping chamber 2-2 of the pump shell 2 are integrated, an inlet is formed in one side of the suction chamber of the pump shell 2, and an outlet is formed in one side of the top of the pumping chamber of the pump shell 2; the bearing box assembly (6) is provided with an inclined strut 6-1, the rear pump cover (3) and the pump shell 2 are fixed through bolts, and the inclined strut 6-1 provides support and fixation; the rotating pump shaft (5) is connected with the stationary rear pump cover (3) through a shaft seal (4).
Furthermore, the impeller 1 is designed to be cantilever type full open claw type blades, the number of the blades is 3, the blades are uniformly distributed on the circumference, and the molded lines of the working surface 1-1-1 and the back surface 1-1-2 are straight lines.
Specifically, the pump shaft (5) is in threaded connection with the impeller hub 1-2.
The impeller of the vortex pump has the advantages of simple structure, few parts of the pump body, convenience in assembly and maintenance, good pump passing capacity, capability of preventing blockage and suitability for conveying high-concentration slurry in the field of environmental protection and dredging.
Drawings
FIG. 1 is a schematic view of the two-dimensional assembly of the vortex pump of the present invention in example 1
Fig. 2 is a front view of an impeller blade according to embodiment 1.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a three-dimensional impeller detail view.
FIG. 5 is a clean water performance curve of a simulation test of a vortex pump manufactured according to theoretical design and calculation in example 2.
The impeller comprises an impeller 1, impeller blades 1-1, a working surface 1-1-1, a back surface 1-1-2 and an impeller hub 1-2;
the pump casing 2, back pump cover 3, bearing seal subassembly 4, pump shaft 5, bearing box subassembly 6, bracing 6-1.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which:
example 1
The non-clogging vortex pump shown in fig. 1 is characterized by comprising an impeller (1), a pump shell (2), a rear pump cover (3), a shaft seal (4), a pump shaft (5) and a bearing box assembly (6); the impeller (1) is connected to the bearing box assembly (6) through an impeller hub (1-2) and a pump shaft (5) in sequence; the pump cavity is formed by combining a cantilever type open impeller (1) and a single-channel pump shell 2, the impeller (1) positioned inside and the pump shell 2 outside are both cast by adopting wear-resistant materials, and the rear pump cover 3 is arranged on the rear side of the pump shell 2 so as to close the cavity;
the suction chamber 2-1 and the pumping chamber 2-2 of the pump shell 2 are integrated, an inlet is arranged at one side of the suction chamber of the pump shell 2, and an outlet is arranged at one side of the top of the pumping chamber of the pump shell 2;
secondly, the bearing box assembly (6) is provided with an inclined strut 6-1, the rear pump cover (3) and the pump shell 2 are fixed through bolts, and the inclined strut 6-1 provides support and fixation; the rotating pump shaft (5) is connected with the stationary rear pump cover (3) through a shaft seal (4).
One of the innovation points of the utility model is that the impeller 1 is designed into cantilever type full open claw type blades, the number of the blades is 3, the blades are uniformly distributed on the circumference, and the molded lines of the working surface 1-1-1 and the back surface 1-1-2 are straight lines.
Specifically, the pump shaft (5) is in threaded connection with the impeller hub 1-2.
Specifically, the pump case 2 is supported by the rear pump cover (3) and fixed on the bearing box assembly (6).
Specifically, a volute flow channel is arranged in the pump shell 2, the cross section of the volute flow channel is in a shape of a round corner rectangle, and the inner edge and the outer edge of the pump shell are in a quasi-spiral line shape.
Example 2
This example 2 is further theoretically designed and optimized based on example 1:
design parameters of the impeller 1 blades: the included angle theta is 10-20 degrees, the adjacent blades are tangent with the circular arc, and the radius r of the circular arc4Diameter D of blade225% of; the thickness delta of the blade outlet is taken as the diameter D of the suction port in20% of; the diameter of the impeller flow passage passing through the maximum sphere is the diameter D of the impeller suction portin80% of the total.
The suction chamber 2-1 is an arc inlet and is connected with the pump shell by an arc r5＝0.35D2(ii) a The pumping chamber 2-2 is in a quasi-spiral shape, and the total width B of a pump shell runner3＝0.55D2+e。
Further, the method is established according to theoretical calculation and experimental verificationDesign parameters of the vortex pump:flow rate Q is 550m3H, the lift H is 22m, and the rotating speed is 1000 rpm;
the outer diameter of the impeller
Unit m, wherein K2Taking 18, wherein H is the lift and the unit is m; n is the rotation speed, unit rpm; d2Calculating to obtain 0.374 m;
width of blade B2＝0.3D2The unit m; calculating to obtain 0.112 m;
the clearance e between the blade and the rear pump cover is 10-30 mm; the optimal value of the sample is 20 mm;
vane outlet thickness δ of 0.2DinThe unit m; calculating to obtain 0.04 m;
inlet diameter D of pump housing 2inAnd outlet diameter Dout：Din＝Dout＝0.5D2Calculating to 0.187m, and rounding to 0.2m of standard GB/T9113.1-2000 flange size.
Thus, the final manufactured vortex pump product: a pump shaft 5 is connected with an impeller 1 through threads, the impeller 1 is positioned in a cavity formed by a pump shell 2 and a rear pump cover 3, and the pump shell 2 passes throughThe bolt fastening is on back pump cover 3, and bearing box subassembly 6 passes through the bolt and is connected with back pump cover 3, and bearing box subassembly 6 passes through rag bolt to be fixed on the basis. The inner edge and the outer edge of the pump shell 2 are both quasi-spiral lines, and the section of a flow passage of the pump shell 2 is rectangular; inlet connection arc r of pump casing 65＝0.35D2Calculated as r50.131 m; total width B of pump casing flow passage3＝0.55D2+e, calculating the clearance value e between the impeller 1 and the rear pump cover 3 to obtain the clearance value e of 20mm to obtain B30.224 m. The impeller rotates anticlockwise, the number of blades is 3, and the outer diameter D of the impeller20.374m, impeller exit width B20.112m, and the included angle theta between the working surface and the back surface of the blade is 15 degrees. FIG. 5 shows that the mud pump performance curve of the utility model, with a flow rate of 550m, is obtained through numerical simulation3H, hydraulic efficiency of 50 percent and head of 22 m.
The present invention is not limited to the above embodiments, and other embodiments and modifications within the scope of the present invention are also encompassed by the present invention.
Claims (1)
1. A non-blocking vortex pump structure is characterized by comprising an impeller (1), a pump shell (2), a rear pump cover (3), a shaft seal (4), a pump shaft (5) and a bearing box assembly (6); the impeller (1) is connected to the bearing box assembly (6) through the impeller hub (1-2) and the pump shaft (5) in sequence; the pump cavity is formed by combining a cantilever type open impeller (1) and a single-channel pump shell (2), the impeller (1) positioned inside and the pump shell (2) positioned outside are both cast by adopting wear-resistant materials, and the rear pump cover (3) is arranged on the rear side of the pump shell (2) so as to close the cavity; the suction chamber (2-1) and the pressurized-water chamber (2-2) of the pump shell (2) are of an integrated structure, an inlet is formed in one side of the suction chamber of the pump shell (2), and an outlet is formed in one side of the top of the pressurized-water chamber of the pump shell (2); the bearing box assembly (6) is provided with an inclined strut (6-1), the rear pump cover (3) and the pump shell (2) are fixed through bolts, and the inclined strut (6-1) provides support and fixation; the rotary pump shaft (5) is connected with the static rear pump cover (3) through a shaft seal (4);
the impeller (1) is designed into cantilever type full open claw type blades, the number of the blades is 3, the blades are uniformly distributed on the circumference, and the molded lines of the working surface (1-1-1) and the back surface (1-1-2) are straight lines;
the pump shaft (5) is in threaded connection with the impeller hub (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122153827.4U CN216044460U (en) | 2021-09-07 | 2021-09-07 | Non-blocking vortex pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122153827.4U CN216044460U (en) | 2021-09-07 | 2021-09-07 | Non-blocking vortex pump structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216044460U true CN216044460U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122153827.4U Active CN216044460U (en) | 2021-09-07 | 2021-09-07 | Non-blocking vortex pump structure |
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| Country | Link |
|---|---|
| CN (1) | CN216044460U (en) |
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2021
- 2021-09-07 CN CN202122153827.4U patent/CN216044460U/en active Active
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