CN114151380B - Antiwind swirl pump with clearance bath - Google Patents
Antiwind swirl pump with clearance bath Download PDFInfo
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- CN114151380B CN114151380B CN202111348831.4A CN202111348831A CN114151380B CN 114151380 B CN114151380 B CN 114151380B CN 202111348831 A CN202111348831 A CN 202111348831A CN 114151380 B CN114151380 B CN 114151380B
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- pump
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- blades
- flushing
- nozzle
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- 238000011010 flushing procedure Methods 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 230000007704 transition Effects 0.000 claims abstract description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 14
- 239000010813 municipal solid waste Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000004088 simulation Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of dredging dredge pumps, hydrodynamics and the like. An anti-winding swirl pump with gap flushing function comprises a pump shell (1), a rear pump cover (3), a shaft seal (4), a pump shaft (5) and a bearing box assembly (6): the water flushing device also comprises an impeller (2), a flushing channel and a nozzle; the semi-open impeller comprises blades, an impeller back cover plate and a hub, wherein: the number of the blades is 3-5, the blades are radial straight blades, the blades are uniformly distributed along the circumference of the impeller, the molded lines of the working surface and the back are straight lines, the molded lines of the blades between adjacent blades are arc transition, and the molded lines of the blades are tangent to the arc; the gap flushing mechanism is a flushing channel and a nozzle and is positioned at the vertical and horizontal included angle positions of the rear pump cover of the cyclone pump. The device can effectively prevent the winding and blockage of the cyclone pump by the garbage sundries in the environment-friendly dredging process, ensure the stable operation of the cyclone pump, reduce maintenance and cleaning, prolong the effective dredging operation time and improve the environment-friendly dredging construction efficiency.
Description
Technical Field
The invention belongs to the technical field of dredging dredge pumps, hydrodynamics and the like.
Background
Whether the device is a river and lake reservoir, an urban and rural river and municipal sewage, the device is required to be environmentally friendly, and the conveying device is used as core equipment in the dredging device and plays a decisive role in the conveying efficiency of environmental dredging. Many river bottom mud, effluent water sump receive serious pollution, contain big piece rubbish in the mud, have brought the challenge for dredging equipment, and current slush pump is often blockked up in the transportation process, and the pump shaft is twined by banded fibre thing, has restricted the mud conveying efficiency in the dredging engineering.
The cyclone pump has the advantage of good throughput and can convey slurry containing massive solids. The impeller is usually an open or semi-open impeller, and the impeller and a vane-free cavity at the suction port side of the pump shell are larger, so that the trafficability is ensured; the relative positions of the impeller and the pump chamber are typically three: (a) the impeller is fully retracted behind the pump chamber, (b) the impeller is partially advanced into the pump chamber, and (c) the impeller is fully advanced into the pump chamber. When the mode of (c) is adopted, the mud part passes through the impeller, and because a gap exists between the impeller and the rear pump cover, the mud flows back into the gap, fiber is carried into the gap by water flow and is wound on the pump shaft, and the rotation of the pump shaft is influenced along with the increase of the winding.
In order to solve the problem of fiber winding, a centrifugal pump cuts and breaks fibers through a pump suction impeller cutting device; however, in the cyclone pump, the cavity on the suction port side of the impeller is large, and the fiber cannot be broken by cutting.
In general, impellers of centrifugal slurry pumps and centrifugal dredging dredge pumps for conveying higher concentration are closed impellers, the passing capacity is improved through special design of the blades, and gap flushing is arranged between the impellers and a lining plate, wherein the gap flushing means is used for reducing abrasion of slurry on a cover plate and the lining plate of the impellers. The gap flushing schematic diagram of the centrifugal mud pump is shown in fig. 1, double arrows indicate the flow direction of mud, single arrows indicate the flow direction of the gap flushing, the gap flushing flows from the center to the outer edge along the gap between the impeller and the lining plate, mud is prevented from entering the gap, and abrasion of the impeller and the lining plate is reduced.
In the art, the use of "gap flushing" is not found in the construction of a swirl pump.
Disclosure of Invention
In order to solve the problems, the invention discloses an anti-winding cyclone pump with gap flushing, which aims at the problems of garbage winding and blockage of the cyclone pump when sludge is conveyed, and the design is combined and optimized by a semi-open impeller and the gap flushing. Prevent that fiber rubbish from twining the pump shaft, reduce the shut down maintenance of pump, realize the mud continuous delivery in the environmental protection desilting engineering.
The technical scheme to be protected of the invention is as follows:
the utility model provides an antiwind spiral-flow pump with clearance bath which characterized in that includes pump case (1), back pump cover (3), bearing seal (4), pump shaft (5), bearing box subassembly (6):
the water flushing device also comprises an impeller (2), a flushing channel and a nozzle (7);
the pump shell (1) is a single-flow-channel pump shell, the impeller (2) is a semi-open impeller, and the impeller (2) is arranged in the inner cavity of the pump shell (1);
the impeller (2) is in threaded connection with the pump shaft (5) through a hub (23) thereof; the impeller (2) is connected to the bearing box assembly (6) through the impeller hub (2-1) and the pump shaft (5) in sequence;
the impeller (2) and the pump shell (1) of the single flow channel are combined into a pump cavity, the impeller (2) positioned inside and the pump shell (1) positioned outside are cast by adopting wear-resistant materials, and a rear pump cover (3) is arranged at the rear side of the pump shell (1) so as to close the cavity; the pump comprises a pump shell (1), a suction chamber (1-1) and a pumping chamber (1-2), wherein the suction chamber (1-1) of the pump shell (1) is provided with an inlet, and the pumping chamber (1-2) of the pump shell (1) is provided with an outlet on the top side;
the bearing box assembly (6) is provided with an inclined strut (6-1), the rear pump cover (3) and the pump shell (1) are fixed through bolts, and the inclined strut (6-1) provides support and fixation; the rotary pump shaft (5) is connected with the stationary rear pump cover (3) through a shaft seal (4);
the pump shell (1) is supported and fixed by the rear pump cover (3), the rear pump cover (3) is connected with the bearing box assembly (6) through bolts, the shaft seal assembly (4) is positioned in a cavity between the rear pump cover (3) and the pump shaft (5), and the flushing channel and the nozzle (7) are connected with an external water pipe.
Further, the semi-open impeller comprises blades (21), an impeller back cover plate (22) and a hub (23), wherein: one side of the impeller rear cover plate (22) is integrated with the blades (21), and the other side of the impeller rear cover plate is integrated with the hub (23); the number of the blades (21) is 3-5, the blades are radial straight blades, the blades are uniformly distributed along the circumference of the impeller, the molded lines of the working surface and the back are straight lines, the molded lines of the blades between adjacent blades are arc transition, and the molded lines of the blades are tangent to the arc; is flush with the circumferential edge of the impeller back cover plate (22) in the extension direction of the straight blades; the gap flushing mechanism is a flushing channel and a nozzle (7), and the flushing channel and the nozzle (7) are positioned at the vertical and horizontal included angle positions of the rear pump cover (3) of the cyclone pump.
The impeller has the advantages that the impeller is simple in structure, the blades are wide and thick, the appearance is flush, and the fiber is not easy to adhere to the impeller. In addition, when the water source is applied, as the gap flushing mechanism adopts the flushing channel and the nozzle (7), the flushing channel and the nozzle (7) are positioned on the vertical and horizontal included angle positions of the rear pump cover (3) of the cyclone pump, and the water source can be obtained by connecting the flushing channel and the nozzle (7) with an external water pipe. In the art, the water source can be provided by another clean water pump (the prior art is not an integral part of the technical proposal of the invention).
Further, the impeller diameterH is the lift, the unit m, n is the rotation speed, the unit rpm;
pump inlet diameter and outlet diameter D in ＝D out ＝0.5D 2 Unit m, rounded to standard GB/T9113.1-2000 flange dimensions.
Further, the thickness of the blade is 20-60mm, and the width B of the blade 2 For impeller diameter D 2 35% of the back cover plate thickness delta 2 Taking 20-30mm.
Further, the included angle theta between the working surface molded line and the back molded line of the blade is 10 degrees to 20 degrees, and the transition arc radius r of the adjacent blade 4 Taking 50-150mm, and taking the thickness of the blade outlet as 20-60mm.
Further, the pump shell flow passage is in a quasi-spiral shape, and the section shape is a rounded rectangle; total width B of pump casing 3 ＝0.6D 2 +e，
Further, a clearance e=2-5 mm between the impeller rear cover plate and the rear pump cover, a flushing channel and a nozzle 7 are positioned at the vertical and horizontal included angle positions of the rear pump cover 3, the flushing channel and the nozzle 7 form an included angle of 45 degrees with the horizontal direction, the flushing channel and the nozzle 7 face the direction of the impeller suction port, the flushing channel and the nozzle 7 are along the circumferential tangential direction, and the water outlet flow direction is opposite to the impeller rotation direction.
The flushing channel and the nozzle 7 flow out along the gap between the rear pump cover 3 and the impeller rear cover plate 22, and the flushing water flow rate q=0.833 n.D 2 2 The unit L/min, n is the rotation speed, the unit rpm, the flushing pressure is 1.2 times of the lift of the cyclone pump. Wherein, the clearance flushing flow formula q=0.833 n.D 2 2 According to the simulation experiment data fitting induction, the gap flushing effect is good under the flow, the operation requirement of the cyclone pump is met, the gap is free from mud backflow, and according to the experiment, the design completely eradicates the winding of garbage and the like.
Advantageous effects
The cyclone pump provided by the invention has the advantages that the gap flushing is carried out, the flow and pressure parameters of the gap flushing are defined, the winding and the blockage of the cyclone pump by garbage sundries in the environment-friendly dredging process are effectively prevented, the stable operation of the cyclone pump is ensured, the maintenance and the cleaning are reduced, the effective dredging operation time is prolonged, and the environment-friendly dredging construction efficiency is improved.
The device is suitable for conveying high-concentration slurry in the municipal sludge conveying and environment-friendly dredging fields.
Drawings
FIG. 1 is a schematic illustration of a centrifugal dredge pump gap flush (prior art)
FIG. 2 is a schematic view of an impeller blade
FIG. 3 is a three-dimensional impeller part view
FIG. 4 is a schematic diagram showing two-dimensional assembly of a swirl pump device according to an example of application
FIG. 5 is a schematic view of the flush channel and the nozzle angle in an exemplary embodiment
FIG. 6 is a graph showing the performance of the test clear water
FIG. 7 is a graph showing the relationship between flush flow and flow direction on the diameter annular surface of the impeller
FIG. 8 is a gap flush flow equation fit
Description of the reference numerals: 1-pump shell, 2-impeller, 3-rear pump cover, 4-shaft seal component, 5-pump shaft, 6-bearing box component, 7-flushing channel and nozzle, 91-pump cover, 92-external clear water auxiliary pump, 93-liner plate I and 94-liner plate II
Detailed Description
The technical solutions provided in the present application will be further described below with reference to specific embodiments and accompanying drawings. The advantages and features of the present application will become more apparent in conjunction with the following description.
As shown in fig. 2 and 3, the anti-winding semi-open impeller comprises blades 21, an impeller back cover plate 22 and a hub 23; the hub 23 is positioned at the center of the impeller back cover plate 22, and the blades 21 are arranged on one side of the impeller back cover plate 22; the number of the blades 21 is 4, the blades are radial straight blades, the working surface molded lines and the back molded lines are straight lines, the blades are uniformly distributed along the circumference of the impeller, the adjacent blades are in arc transition, and the blade molded lines (the working surface molded lines or the back molded lines) are tangent to the arc; the thickness of the blade outlet is delta, the included angle between the working surface molded line and the back molded line is theta, and the outer diameter of the impeller is D 2 The radius of the fillet of the adjacent blade is r 4 。
Based on the design, when the anti-winding semi-open impeller is used, the gap flushing mechanism adopts the flushing channel and the nozzle (7), and the flushing channel and the nozzle (7) are positioned on the vertical and horizontal included angle positions of the rear pump cover (3) of the cyclone pump, so that a water source can be obtained by connecting the flushing channel and the nozzle (7) with an external water pipe. In the art, the water source can be provided by another clean water pump (the prior art is not an integral part of the technical proposal of the invention).
Design examples of the application and simulation tests are given below.
Examples
The above described anti-wind semi-open impeller design is applied to a swirl pump to make an anti-wind swirl pump with gap flushing, as shown in fig. 4:
the anti-winding swirl pump comprises a pump shell (1), a rear pump cover (3), a shaft seal (4), a pump shaft (5) and a bearing box assembly (6):
the water flushing device also comprises an impeller (2), a flushing channel and a nozzle (7);
the pump shell (1) is a single-flow-channel pump shell, the impeller (2) is a semi-open impeller, and the impeller (2) is arranged in the inner cavity of the pump shell (1);
the impeller (2) is in threaded connection with the pump shaft (5) through a hub (23) thereof; the impeller (2) is connected to the bearing box assembly (6) through the impeller hub (2-1) and the pump shaft (5) in sequence;
the impeller (2) and the pump shell (1) of the single flow channel are combined into a pump cavity, the impeller (2) positioned inside and the pump shell (1) positioned outside are cast by adopting wear-resistant materials, and a rear pump cover (3) is arranged at the rear side of the pump shell (1) so as to close the cavity; the pump comprises a pump shell (1), a suction chamber (1-1) and a pumping chamber (1-2), wherein the suction chamber (1-1) of the pump shell (1) is provided with an inlet, and the pumping chamber (1-2) of the pump shell (1) is provided with an outlet on the top side;
the bearing box assembly (6) is provided with an inclined strut (6-1), the rear pump cover (3) and the pump shell (1) are fixed through bolts, and the inclined strut (6-1) provides support and fixation; the rotary pump shaft (5) is connected with the stationary rear pump cover (3) through a shaft seal (4);
the pump shell (1) is supported and fixed by the rear pump cover (3), the rear pump cover (3) is connected with the bearing box assembly (6) through bolts, the shaft seal assembly (4) is positioned in a cavity between the rear pump cover (3) and the pump shaft (5), the flushing channel and the nozzle (7) are connected with an external water pipe, and a water source is provided by another clean water pump (the part does not belong to the component part of the invention).
As an application example, a gap e=3mm between the impeller rear cover plate and the rear pump cover, the flushing channel and the nozzle 7 are located at vertical and horizontal included angles of the rear pump cover 3, in fig. 4, the flushing channel and the nozzle 7 form an included angle of 45 ° with the horizontal direction, facing the direction of the impeller suction port, the flushing channel and the nozzle 7 are along the circumferential tangential direction (flushing angle shown in fig. 5), the water outlet flow direction is opposite to the impeller rotation direction, and fiber winding is prevented.
The external auxiliary pump provides flushing water, the flushing water flows out along the gap between the rear pump cover 3 and the impeller rear cover plate 22, and the flushing water flow rate q=0.833 n.D 2 2 The unit L/min, n is the rotation speed, the unit rpm, the flushing pressure is 1.2 times of the lift of the cyclone pump.
Gap flushing flow formula q=0.833 n·d 2 2 According to the simulation experiment data, the gap flushing effect is good under the flow, the operation requirement of the cyclone pump is met, the gap has no mud backflow (figure 7), and the winding of garbage and the like can be prevented.
Calculation example, simulation experiment and simulation
Embodiment swirl pump design parameters:
flow q=600m 3 /H, head h=30m, rotation speed n=1200 rpm,
impeller outer diameterD 2 Calculated 0.364m;
pump inlet diameter and outlet diameter D in ＝D out ＝0.5D 2 Calculating to obtain 0.182m, and rounding to the flange 0.2m of the standard GB/T9113.1-2000;
blade width B 2 ＝0.35D 2 Calculated as 0.127m,
impeller to rear pump cover clearance e=3mm,
blade outlet thickness δ=0.15D in The thickness of the material is 0.03m,
as shown in FIGS. 2 and 3, the impeller rotates counterclockwise, the number of blades is 4, and the outer diameter D of the impeller 2 Blade outlet width B of 0.364m 2 The included angle theta between the working surface and the back surface of the blade is 10 degrees, and the radius r of the fillet of the adjacent blade is 0.127m 4 100mm was taken. Impeller back cover plate thickness delta 2 20mm was taken.
As shown in fig. 4, the pump shaft 5 is connected with the impeller 2 through threads, the impeller 2 is located in a cavity formed by the pump shell 1 and the rear pump cover 3, the pump shell 1 is fixed on the rear pump cover 3 through bolts, and the bearing box assembly 6 is connected with the rear pump cover 3 through bolts and is fixed on a foundation through foundation bolts. The pump shell flow passage is designed into a quasi-spiral line, and the section of the pump shell flow passage adopts a rectangle. Total width B of pump case flow channel 3 ＝0.6D 2 The clearance value e between the impeller and the rear pump cover is 3mm, and B is calculated 3 =0.221 m; the flushing channel and the nozzle (7) form an included angle of 45 degrees with the horizontal direction;
as shown in fig. 5, the water flow direction of the water outlet is opposite to the rotation direction of the impeller, namely, the impeller rotates clockwise, and the water flow of the water flushing channel and the nozzle 7 rotates anticlockwise, so that fiber winding can be effectively prevented; flush channel and spout (7) providing intermittent flush parameterThe method comprises the following steps: flow q=0.833 n·d 2 2 132L/min is calculated; the seal water pressure p is 1.2 times of the lift H of the cyclone pump, and is calculated to be 36m, namely 3.6bar.
FIG. 6 shows a numerical simulation to obtain a performance curve of the mud pump of the present embodiment, the flow rate is 600m 3 And/h, the lift is 30m, and the hydraulic efficiency is 50%.
In fig. 7, the arrow indicates the water flow direction of the gap at the e (see fig. 4), and through a large number of simulation experiments, the water flow direction of the water flow at different flow rates is obtained, the arrow length indicates the magnitude of the velocity value, and the ideal state is that only the water flows out and no water flows in. In the figure, when the flow rate q=0.833 n·d 2 2 When the flow is in, only outflow and no inflow are satisfied; the flow rate was 0.8q, with inflow and outflow, and the flow rate was 1.2q, with only outflow and no inflow, but the water flow was large. Therefore q=0.833 n·d is preferred 2 2 As a result of (a).
The present invention is specifically described above, but the present invention is not limited to the above-described embodiments, and other embodiments and modifications within the scope of the present invention are also included.
Claims (2)
1. The utility model provides an antiwind spiral-flow pump with clearance bath which characterized in that includes pump case (1), back pump cover (3), bearing seal (4), pump shaft (5), bearing box subassembly (6):
the device also comprises an impeller (2) and a gap flushing mechanism;
the pump shell (1) is a single-flow-channel pump shell, the impeller (2) is a semi-open impeller, and the impeller (2) is arranged in the inner cavity of the pump shell (1);
the impeller (2) is in threaded connection with the pump shaft (5) through a hub (23) thereof; the impeller (2) is connected to the bearing box assembly (6) through the impeller hub (2-1) and the pump shaft (5) in sequence;
the impeller (2) and the pump shell (1) of the single flow channel are combined into a pump cavity, the impeller (2) positioned inside and the pump shell (1) positioned outside are cast by adopting wear-resistant materials, and a rear pump cover (3) is arranged at the rear side of the pump shell (1) so as to close the cavity; the suction chamber (1-1) and the pumping chamber (1-2) of the pump shell (1) are of an integrated structure, one side of the suction chamber (1-1) of the pump shell (1) is provided with an inlet, and one side of the top of the pumping chamber (1-2) of the pump shell (1) is provided with an outlet;
the bearing box assembly (6) is provided with an inclined strut (6-1), the rear pump cover (3) and the pump shell (1) are fixed through bolts, and the inclined strut (6-1) provides support and fixation; the rotary pump shaft (5) is connected with the stationary rear pump cover (3) through a shaft seal (4);
the pump shell (1) is supported and fixed by the rear pump cover (3), the rear pump cover (3) is connected with the bearing box assembly (6) through bolts, the shaft seal assembly (4) is positioned in a cavity between the rear pump cover (3) and the pump shaft (5), and the flushing channel and the nozzle (7) are connected with an external water pipe;
the impeller (2) is semi-open, and comprises blades (21), an impeller back cover plate (22) and a hub (23), wherein: one side of the impeller rear cover plate (22) is integrated with the blades (21), and the other side of the impeller rear cover plate is integrated with the hub (23); the number of the blades (21) is 3-5, the blades are radial straight blades, the blades are uniformly distributed along the circumference of the impeller, the molded lines of the working surface and the back are straight lines, the molded lines of the blades between adjacent blades are arc transition, and the molded lines of the blades are tangent to the arc; the straight blades are flush with the circumferential edge of the impeller rear cover plate (22) in the extending direction; the gap flushing mechanism is a flushing channel and a nozzle (7), and the flushing channel and the nozzle (7) are positioned at the vertical and horizontal included angle positions of the rear pump cover (3) of the cyclone pump;
the impeller diameterH is the lift, the unit m, n is the rotation speed, the unit rpm;
the inlet diameter and the outlet diameter of the cyclone pumpUnit m, round to standard GB/T9113.1-2000 flange size;
the pump shell flow passage is in a quasi-spiral shape, and the section shape is a round corner rectangle; total width of pump casingB 3 =0.6D 2 +eImpeller back cover plate and back pump coverThe gap e=2-5 mm;
the thickness of the blade is 20-60mm, and the width of the bladeB 2 Is the diameter of the impellerD 2 35% of the back cover plate thicknessTaking 20-30mm;
the included angle between the working surface molded line and the back surface molded line of the bladeIs 10 degrees to 20 degrees, and the transition arc radius of adjacent blades is +.>Taking 50-150mm, wherein the thickness of the blade outlet is 20-60mm;
the flushing channel and the nozzle (7) form an included angle of 45 degrees with the horizontal direction and face the suction port direction of the impeller, the flushing channel and the nozzle (7) are along the circumferential tangential direction, and the water flow direction of the water outlet is opposite to the rotation direction of the impeller;
the flushing channel and the nozzle (7) flow out along the gap between the rear pump cover (3) and the impeller rear cover plate (22) and flow of flushing waterThe unit L/min, n is the rotation speed, the unit rpm, the flushing pressure is 1.2 times of the lift of the cyclone pump.
2. An anti-windup swirl pump with gap flushing according to claim 1, characterized in that the water flow direction of the flushing channel and the spout (7) is opposite to the impeller rotation direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111348831.4A CN114151380B (en) | 2021-11-15 | 2021-11-15 | Antiwind swirl pump with clearance bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111348831.4A CN114151380B (en) | 2021-11-15 | 2021-11-15 | Antiwind swirl pump with clearance bath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114151380A CN114151380A (en) | 2022-03-08 |
| CN114151380B true CN114151380B (en) | 2024-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111348831.4A Active CN114151380B (en) | 2021-11-15 | 2021-11-15 | Antiwind swirl pump with clearance bath |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5087171A (en) * | 1989-07-25 | 1992-02-11 | Goulds Pumps, Incorporated | Paper pulp centrifugal pump with gas separation |
| EP2226505A1 (en) * | 2009-03-03 | 2010-09-08 | KSB Aktiengesellschaft | Free flow impeller with cutting edges |
| CN102207092A (en) * | 2011-06-07 | 2011-10-05 | 张意立 | High-concentration centrifugal pulp pump capable of spraying water on outer corner |
| CN203730335U (en) * | 2014-01-25 | 2014-07-23 | 台州斯莱特机电设备有限公司 | Sewage pump |
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| CN114151380A (en) | 2022-03-08 |
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