CN211820084U - Front-mounted shaft tubular pump water inlet flow channel with bottom flow guide structure - Google Patents
Front-mounted shaft tubular pump water inlet flow channel with bottom flow guide structure Download PDFInfo
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- CN211820084U CN211820084U CN202020095226.5U CN202020095226U CN211820084U CN 211820084 U CN211820084 U CN 211820084U CN 202020095226 U CN202020095226 U CN 202020095226U CN 211820084 U CN211820084 U CN 211820084U
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Abstract
The utility model relates to a take leading shaft tubular pump water inlet flow way of bottom water conservancy diversion structure, including leading shaft tubular pump water inlet flow way, characterized by: the water inlet channel of the front-mounted shaft tubular pump comprises a first water inlet channel and a second water inlet channel, a cavity is reserved between the first water inlet channel and the second water inlet channel, a third water inlet channel is arranged at the bottom of the cavity, and the first water inlet channel, the second water inlet channel and the third water inlet channel are provided with a same channel water inlet and a same channel water outlet; an impeller is arranged at the water outlet of the flow channel; a first bottom diversion structure, a second bottom diversion structure and a third bottom diversion structure are arranged in the third water inlet flow channel, and are sequentially arranged along the direction from the water inlet of the flow channel to the water outlet of the flow channel in the third water inlet flow channel; through utility model, can effectively improve pump station operating efficiency, improve and go into pump water flow state.
Description
Technical Field
The utility model relates to a take leading shaft tubular pump runner of intaking of bottom water conservancy diversion structure belongs to hydraulic engineering, municipal works technical field.
Background
The through-flow pump is a low-lift axial-flow pump, and has the advantages of large flow, simple structure, low cost and high efficiency. Is suitable for drainage and irrigation in low-lying areas. In the front-mounted shaft tubular pump device, a motor, a bearing, a gear box and the like are all arranged in a reinforced concrete shaft, the performance of the pump device in a low-lift pump station is partially determined by hydraulic loss of a flow channel, and due to the arrangement of the front-mounted shaft, the flow area is reduced, incoming flow is blocked, and the hydraulic loss is increased.
In order to improve the flow state in the shaft tubular pump device, related measures are available at present, including: three sides are provided with water inlet and the bottom is provided with a longitudinal partition pier, so that the area of the water passing section is increased, but the flow state of water flow passing through the irregular shape of the incoming flow section cannot be improved. The shape of the vertical shaft of the water inlet channel and the molded line of the channel are optimized, and the hydraulic loss caused by water flow impact is reduced, however, the water flow speed of inlet water cannot be reduced well, and the hydraulic loss is still large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect that exists among the prior art and not enough, provide a take leading shaft tubular pump intake runner of bottom water conservancy diversion structure, can effectively reduce leading shaft tubular pump intake runner's hydraulic loss, the efficiency of very high pump station operation.
The utility model aims at realizing like this, a take leading shaft tubular pump intake runner of bottom water conservancy diversion structure, including leading shaft tubular pump intake runner, characterized by: the water inlet channel of the front-mounted shaft tubular pump comprises a first water inlet channel and a second water inlet channel, a cavity is reserved between the first water inlet channel and the second water inlet channel, a third water inlet channel is arranged at the bottom of the cavity, and the first water inlet channel, the second water inlet channel and the third water inlet channel are provided with a same channel water inlet and a same channel water outlet;
an impeller is arranged at the water outlet of the flow channel; a first bottom diversion structure, a second bottom diversion structure and a third bottom diversion structure are arranged in the third water inlet flow channel, and are sequentially arranged along the direction from the water inlet of the flow channel to the water outlet of the flow channel in the third water inlet flow channel;
the first bottom diversion structure is formed by crossing a plurality of first cross rods and a plurality of first vertical rods, and a plurality of first water flow through holes are formed by crossing the first cross rods and the first vertical rods; the second bottom diversion structure is formed by crossing a plurality of second cross rods and a plurality of second vertical rods, and a plurality of second water flow through holes are formed by crossing the plurality of second cross rods and the plurality of second vertical rods; the third bottom diversion structure is formed by crossing a plurality of third cross rods and a plurality of third vertical rods, and a plurality of third water flow through holes are formed in the crossing of the plurality of third cross rods and the plurality of third vertical rods.
The distance between the first bottom flow guide structure and the water inlet of the flow channel is 1.60 times of the diameter of the impeller, and the width of the first bottom flow guide structure is 1.44 times of the diameter of the impeller;
the distance between the second bottom diversion structure and the water inlet of the flow channel is 2.40 times of the diameter of the impeller, and the width of the second bottom diversion structure is 1.65 times of the diameter of the impeller;
the distance between the third bottom flow guide structure and the water inlet of the flow channel is 3.15 times of the diameter of the impeller, and the width of the third bottom flow guide structure is 1.44 times of the diameter of the impeller.
The wall thickness among the first water inlet flow channel, the second water inlet flow channel and the cavity is 0.18 times of the diameter of the impeller, and the wall thickness of the top of the third water inlet flow channel is 0.18 times of the diameter of the impeller.
The width of the first bottom flow guide structure is 1.44 times of the diameter of the impeller, the height of the first bottom flow guide structure is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller;
the width of the second bottom flow guide structure is 1.65 times of the diameter of the impeller, the height of the second bottom flow guide structure is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller;
the width of the third bottom flow guide structure is 1.44 times of the diameter of the impeller, the height of the third bottom flow guide structure is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller.
The length of the third water inlet flow channel is 3.46 times of the diameter of the impeller; the thickness of the first bottom flow guide structure, the second bottom flow guide structure and the third bottom flow guide structure is 0.15 times of the diameter of the impeller.
The width of the first bottom flow guide structure is 1.44 times of the diameter of the impeller, and the height of the first bottom flow guide structure is 0.3-0.5 times of the diameter of the impeller;
the width of the second bottom flow guide structure is 1.65 times of the diameter of the impeller, and the height of the second bottom flow guide structure is 0.3-0.5 times of the diameter of the impeller;
the width of the flow guide structure at the bottom of the third channel is 1.44 times of the diameter of the impeller, and the height of the flow guide structure at the bottom of the third channel is 0.3-0.5 times of the diameter of the impeller.
In the first bottom diversion structure, the width of the intersection of the first cross rod and the first vertical rod is 0.015 time of the diameter of the impeller;
in the second bottom diversion structure, the width of the intersection of the second cross rod and the second vertical rod is 0.015 time of the diameter of the impeller;
in the third bottom diversion structure, the width of the intersection of the third cross rod and the third vertical rod is 0.015 time of the diameter of the impeller.
The width of the first water flow through hole, the width of the second water flow through hole and the width of the third water flow through hole are all 0.094 times of the diameter of the impeller, and the height of the first water flow through hole, the width of the second water flow through hole and the width of the third water flow through hole are all 0.08-0.14 times of the diameter of the impeller.
The utility model discloses the advanced science of method, through the utility model discloses, the leading shaft tubular pump intake runner of a take bottom water conservancy diversion structure that provides sets up the leading shaft tubular pump intake runner of taking bottom water conservancy diversion structure, and the purpose is in order to reduce the hydraulic loss of leading shaft tubular pump intake runner, improves the pump water flow state, the efficiency of very high pump station operation. The water inlet flow channel of the front shaft tubular pump with the bottom diversion structure is provided with a shaft height instead of a through flow channel according to a certain size, so that the water inlet flow channel forms three side water inlet flow channels (a first water inlet flow channel, a second water inlet flow channel and a third water inlet flow channel) comprising two channels between two side walls of the shaft and the water inlet flow channel and a channel between the bottoms of the shaft and the water inlet flow channel, on the basis, three diversion structures (a first bottom diversion structure, a second bottom diversion structure and a third bottom diversion structure) are arranged between the lower part of the shaft and the bottom of the water inlet flow channel (the third water inlet flow channel) according to the size of a water pump, the shaft is supported, water flows pass through the diversion structures, and the flow state is improved.
According to the flow state analysis in the water inlet flow channel of the front-mounted shaft tubular pump, due to the arrangement of the shaft, the area of the cross section of incoming flow entering the flow channel is reduced, the increase of the flow speed is not beneficial to kinetic energy recovery, and the hydraulic loss is large. The area of the cross section of water flow is increased after the three-side water inlet front-mounted shaft tubular pump water inlet flow channel is changed, however, the control measures for the flow state of the bottom are less, the hydraulic loss can be eliminated, due to the setting requirement of the height of the shaft, the water inlet condition of one side of the bottom is lower in height and wider in width, the flow state is more disordered when water flows into the irregular cross section, and the bottom water flows through the flow guide structures while supporting by arranging the three flow guide structures (the first bottom flow guide structure, the second bottom flow guide structure and the third bottom flow guide structure) between the shaft and the bottom of the flow channel, so that the occurrence of poor flow states such as vortex caused by transverse diffusion of the water flow is reduced, and the flow state of the water flowing into the pump is more.
Has the advantages that: the water inlet channel of the front shaft tubular pump is changed into three-side water inlet (a first water inlet channel, a second water inlet channel and a third water inlet channel), and three guide structures (a first bottom guide structure, a second bottom guide structure and a third bottom guide structure) are arranged at the bottom (the third water inlet channel), so that hydraulic loss in the channel can be obviously reduced, a more excellent inflow condition is provided, and the problems of poor flow states such as vortexes and backflow at the bottom of the traditional three-side water inlet and vibration caused by insufficient support strength can be solved. The utility model discloses be applied to pump station construction and transformation, can effectively improve pump station operating efficiency, improve and go into pump water flow state.
Drawings
FIG. 1 is a top view of a front shaft tubular pump water inlet flow passage with a bottom flow guide structure;
FIG. 2 is a sectional side view of the inlet channel A-A of the front-mounted shaft tubular pump with a bottom flow guide structure in FIG. 1;
FIG. 3 is a sectional side view of the inlet channel B-B of the front shaft tubular pump with a bottom flow guide structure in FIG. 1;
FIG. 4 is a cross-sectional side view of the inlet channel C-C of the front-mounted shaft tubular pump with a bottom flow directing structure of FIG. 1;
FIG. 5 is a front elevation view of a front shaft tubular pump inlet flow channel with a bottom flow directing structure;
FIG. 6 is a front view of the bottom deflector at section A-A of FIG. 1;
FIG. 7 is a front view of the bottom diversion structure of section B-B of FIG. 1;
FIG. 8 is a front view of the bottom deflector at section C-C of FIG. 1;
in the figure: the water inlet flow channel of the front vertical shaft tubular pump 1, the first water inlet flow channel 1-1, the second water inlet flow channel 1-2, the third water inlet flow channel 1-3, the flow channel water inlet 2, the flow channel water outlet 3, the first bottom diversion structure 4-1, the first cross rod 4-1-1, the first vertical rod 4-1-2, the first water flow through hole 4-1-3, the second bottom diversion structure 4-2, the second cross rod 4-2-1, the second vertical rod 4-2-2, the second water flow through hole 4-2-3, the third bottom diversion structure 4-3-1, the third cross rod 4-3-2, and the third water flow through hole 4-3-3.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
A front shaft tubular pump water inlet flow channel with a bottom diversion structure comprises a front shaft tubular pump water inlet flow channel 1, wherein the front shaft tubular pump water inlet flow channel 1 comprises a first water inlet flow channel 1-1 and a second water inlet flow channel 1-2, a cavity is reserved between the first water inlet flow channel 1-1 and the second water inlet flow channel 1-2, a third water inlet flow channel 1-3 is arranged at the bottom of the cavity, and the first water inlet flow channel 1-1, the second water inlet flow channel 1-2 and the third water inlet flow channel 1-3 are provided with a same flow channel water inlet 2 and a same flow channel water outlet 3.
An impeller is arranged at the position of the runner water outlet 3; a first bottom diversion structure 4-1, a second bottom diversion structure 4-2 and a third bottom diversion structure 4-3 are arranged in the third water inlet channel 1-3, and the first bottom diversion structure 4-1, the second bottom diversion structure 4-2 and the third bottom diversion structure 4-3 are sequentially arranged in the third water inlet channel 1-3 along the channel water inlet 2 to the channel water outlet 3.
The first bottom diversion structure 4-1 is formed by crossing a plurality of first cross rods 4-1-1 and a plurality of first vertical rods 4-1-2, and a plurality of first water flow through holes 4-1-3 are formed by crossing the plurality of first cross rods 4-1-1 and the plurality of first vertical rods 4-1-2; the second bottom diversion structure 4-2 is formed by crossing a plurality of second cross rods 4-2-1 and a plurality of second vertical rods 4-2-2, and a plurality of second water flow through holes 4-2-3 are formed by crossing the plurality of second cross rods 4-2-1 and the plurality of second vertical rods 4-2-2; the third bottom diversion structure 4-3 is formed by crossing a plurality of third cross bars 4-3-1 and a plurality of third vertical bars 4-3-2, and a plurality of third water flow through holes 4-3-3 are formed by crossing a plurality of third cross bars 4-3-1 and a plurality of third vertical bars 4-3-2.
Further, the distance between the first bottom flow guide structure 4-1 and the water inlet 2 of the flow channel is 1.60 times of the diameter of the impeller, and the width of the first bottom flow guide structure 4-1 is 1.44 times of the diameter of the impeller; the distance between the second bottom diversion structure 4-2 and the water inlet 2 of the flow channel is 2.40 times of the diameter of the impeller, and the width of the second bottom diversion structure 4-2 is 1.65 times of the diameter of the impeller; the distance between the third bottom flow guide structure 4-3 and the water inlet 2 of the flow channel is 3.15 times of the diameter of the impeller, and the width of the third bottom flow guide structure 4-3 is 1.44 times of the diameter of the impeller.
The wall thicknesses between the first water inlet flow channel 1-1, the second water inlet flow channel 1-2 and the cavity are all 0.18 time of the diameter of the impeller, and the wall thickness of the top of the third water inlet flow channel 1-3 is 0.18 time of the diameter of the impeller. The width of the first bottom flow guide structure 4-1 is 1.44 times of the diameter of the impeller, the height is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller; the width of the second bottom flow guide structure 4-2 is 1.65 times of the diameter of the impeller, the height is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller; the width of the third bottom flow guide structure 4-3 is 1.44 times of the diameter of the impeller, the height is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller. The length of the third water inlet flow channel 1-3 is 3.46 times of the diameter of the impeller; the thicknesses of the first bottom flow guide structure 4-1, the second bottom flow guide structure 4-2 and the third bottom flow guide structure 4-3 are all 0.15 time of the diameter of the impeller. The width of the first bottom flow guide structure 4-1 is 1.44 times of the diameter of the impeller, and the height of the first bottom flow guide structure is 0.3-0.5 times of the diameter of the impeller; the width of the second bottom flow guide structure 4-2 is 1.65 times of the diameter of the impeller, and the height is 0.3-0.5 times of the diameter of the impeller; the width of the third bottom flow guide structure 4-3 is 1.44 times of the diameter of the impeller, and the height is 0.3-0.5 times of the diameter of the impeller. In the first bottom diversion structure 4-1, the widths of the first cross rod 4-1-1 and the first vertical rod intersection 4-1-2 are 0.015 time of the diameter of the impeller; in the second bottom diversion structure 4-2, the widths of the second cross rod 4-2-1 and the second vertical rod 4-2-2 are both 0.015 time of the diameter of the impeller; in the third bottom diversion structure 4-3, the widths of the third cross rod 4-3-1 and the third vertical rod 4-3-2 are both 0.015 time of the diameter of the impeller. The width of the first water flow through hole 4-1-3, the width of the second water flow through hole 4-2-3 and the width of the third water flow through hole 4-3-3 are all 0.094 times of the diameter of the impeller, and the height of the third water flow through hole is 0.08-0.14 times of the diameter of the impeller.
Pouring bottom flow guide structures (a first bottom flow guide structure 4-1, a second bottom flow guide structure 4-2 and a third bottom flow guide structure 4-3) in a water inlet channel of the front shaft tubular pump with the bottom flow guide structures and a channel bottom plate at the same time.
In the figure 1, D is the diameter of the impeller, and the section A-A, B-B, C-C is the arrangement position of a bottom flow guide structure (a first bottom flow guide structure 4-1, a second bottom flow guide structure 4-2 and a third bottom flow guide structure 4-3), is respectively 1.60D, 2.40D and 3.15D away from a runner water inlet, and the width is respectively 1.44D, 1.65D and 1.44D.
FIG. 2 is a sectional side view of A-A, wherein the wall thicknesses between the first water inlet channel 1-1 and the cavity, between the second water inlet channel 1-2 and the cavity, are all 0.18D, the wall thickness at the top of the third water inlet channel 1-3 is 0.18D, the width of the first bottom flow guide structure 4-1 is 1.44D, the height is h, and the value range of h is (0.3D-0.5D).
FIG. 3 is a sectional side view of B-B, wherein the wall thicknesses between the first water inlet channel 1-1 and the second water inlet channel 1-2 and the cavity are all 0.18D, the wall thickness at the top of the third water inlet channel 1-3 is 0.18D, the width of the second bottom flow guide structure 4-2 is 1.65D, the height is h, and the value range of h is (0.3D-0.5D).
FIG. 4 is a cross-sectional side view of C-C, wherein the wall thicknesses between the first water inlet channel 1-1, the second water inlet channel 1-2 and the cavity are all 0.18D, the wall thickness at the top of the third water inlet channel 1-3 is 0.18D, the width of the third bottom flow guide structure 4-3 is 1.44D, the height is h, and the value range of h is (0.3D-0.5D).
In the figure 5, the length of the third water inlet channel 1-3 is 3.46D, the thickness of the first bottom flow guide structure 4-1, the thickness of the second bottom flow guide structure 4-2 and the thickness of the third bottom flow guide structure 4-3 are all 0.15D, and the third bottom flow guide structure is arranged at the positions 1.60D, 2.40D and 3.15D away from the water inlets of the channels.
FIG. 6 is a front view of a first bottom diversion structure 4-1, the width of which is 1.44D and the height of which is h (0.3D-0.5D), wherein in the first bottom diversion structure 4-1, the widths of a first cross rod 4-1-1 and a first vertical rod cross 4-1-2 are both 0.015D; the width of each first water flow through hole 4-1-3 is 0.094D, and the height of each first water flow through hole is 0.08D-0.14D.
FIG. 7 is a front view of a second bottom diversion structure 4-2, with a width of 1.65D and a height of h (0.3D-0.5D), wherein in the second bottom diversion structure 4-2, the widths of a second cross bar 4-2-1 and a second vertical bar intersection 4-2-2 are both 0.015D, the width of a second water flow through hole 4-2-3 is 0.094D, and the height is 0.08D-0.14D.
FIG. 8 is a front view of a third bottom diversion structure 4-3, with a width of 1.44D and a height of h (0.3D-0.5D), wherein in the third bottom diversion structure 4-3, the widths of a third cross bar 4-3-1 and a third vertical bar cross 4-3-2 are both 0.015D, the width of a third water flow through hole 4-3-3 is 0.094D, and the height is 0.08D-0.14D.
Claims (8)
1. The utility model provides a take leading shaft tubular pump inlet flow way of bottom water conservancy diversion structure, includes leading shaft tubular pump inlet flow way (1), characterized by: the water inlet channel (1) of the front-mounted shaft tubular pump comprises a first water inlet channel (1-1) and a second water inlet channel (1-2), a cavity is reserved between the first water inlet channel (1-1) and the second water inlet channel (1-2), a third water inlet channel (1-3) is arranged at the bottom of the cavity, and the first water inlet channel (1-1), the second water inlet channel (1-2) and the third water inlet channel (1-3) are provided with a same channel water inlet (2) and a same channel water outlet (3);
an impeller is arranged at the water outlet (3) of the flow passage; a first bottom diversion structure (4-1), a second bottom diversion structure (4-2) and a third bottom diversion structure (4-3) are arranged in the third water inlet runner (1-3), and the first bottom diversion structure (4-1), the second bottom diversion structure (4-2) and the third bottom diversion structure (4-3) are sequentially arranged in the third water inlet runner (1-3) along the runner water inlet (2) towards the runner water outlet (3);
the first bottom diversion structure (4-1) is formed by crossing a plurality of first cross rods (4-1-1) and a plurality of first vertical rods (4-1-2), and a plurality of first water flow through holes (4-1-3) are formed by crossing the plurality of first cross rods (4-1-1) and the plurality of first vertical rods (4-1-2); the second bottom diversion structure (4-2) is formed by crossing a plurality of second cross rods (4-2-1) and a plurality of second vertical rods (4-2-2), and a plurality of second water flow through holes (4-2-3) are formed by crossing the plurality of second cross rods (4-2-1) and the plurality of second vertical rods (4-2-2); the third bottom diversion structure (4-3) is formed by crossing a plurality of third cross rods (4-3-1) and a plurality of third vertical rods (4-3-2), and a plurality of third water flow through holes (4-3-3) are formed by crossing the plurality of third cross rods (4-3-1) and the plurality of third vertical rods (4-3-2).
2. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: the distance between the first bottom diversion structure (4-1) and the water inlet (2) of the flow channel is 1.60 times of the diameter of the impeller, and the width of the first bottom diversion structure (4-1) is 1.44 times of the diameter of the impeller;
the distance between the second bottom diversion structure (4-2) and the water inlet (2) of the flow channel is 2.40 times of the diameter of the impeller, and the width of the second bottom diversion structure (4-2) is 1.65 times of the diameter of the impeller;
the distance between the third bottom diversion structure (4-3) and the water inlet (2) of the flow channel is 3.15 times of the diameter of the impeller, and the width of the third bottom diversion structure (4-3) is 1.44 times of the diameter of the impeller.
3. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: the wall thicknesses among the first water inlet flow channel (1-1), the second water inlet flow channel (1-2) and the cavity are all 0.18 time of the diameter of the impeller, and the wall thickness of the top of the third water inlet flow channel (1-3) is 0.18 time of the diameter of the impeller.
4. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: the width of the first bottom flow guide structure (4-1) is 1.44 times of the diameter of the impeller, the height of the first bottom flow guide structure is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller;
the width of the second bottom flow guide structure (4-2) is 1.65 times of the diameter of the impeller, the height of the second bottom flow guide structure is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller;
the width of the third bottom flow guide structure (4-3) is 1.44 times of the diameter of the impeller, the height of the third bottom flow guide structure is h, and the value range of h is 0.3-0.5 times of the diameter of the impeller.
5. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: the length of the third water inlet flow channel (1-3) is 3.46 times of the diameter of the impeller; the thicknesses of the first bottom flow guide structure (4-1), the second bottom flow guide structure (4-2) and the third bottom flow guide structure (4-3) are all 0.15 time of the diameter of the impeller.
6. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: the width of the first bottom flow guide structure (4-1) is 1.44 times of the diameter of the impeller, and the height of the first bottom flow guide structure is 0.3-0.5 times of the diameter of the impeller;
the width of the second bottom flow guide structure (4-2) is 1.65 times of the diameter of the impeller, and the height of the second bottom flow guide structure is 0.3-0.5 times of the diameter of the impeller;
the width of the third bottom flow guide structure (4-3) is 1.44 times of the diameter of the impeller, and the height of the third bottom flow guide structure is 0.3-0.5 times of the diameter of the impeller.
7. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: in the first bottom diversion structure (4-1), the widths of the first cross rod (4-1-1) and the first vertical rod (4-1-2) are 0.015 time of the diameter of the impeller;
in the second bottom diversion structure (4-2), the widths of the second cross rod (4-2-1) and the second vertical rod (4-2-2) are 0.015 time of the diameter of the impeller;
in the third bottom diversion structure (4-3), the widths of the third cross rod (4-3-1) and the third vertical rod (4-3-2) are 0.015 time of the diameter of the impeller.
8. The front-mounted shaft tubular pump water inlet channel with the bottom flow guide structure as claimed in claim 1, wherein: the width of the first water flow through hole (4-1-3), the width of the second water flow through hole (4-2-3) and the width of the third water flow through hole (4-3-3) are all 0.094 times of the diameter of the impeller, and the height of the third water flow through hole is 0.08-0.14 times of the diameter of the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020095226.5U CN211820084U (en) | 2020-01-16 | 2020-01-16 | Front-mounted shaft tubular pump water inlet flow channel with bottom flow guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020095226.5U CN211820084U (en) | 2020-01-16 | 2020-01-16 | Front-mounted shaft tubular pump water inlet flow channel with bottom flow guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820084U true CN211820084U (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020095226.5U Active CN211820084U (en) | 2020-01-16 | 2020-01-16 | Front-mounted shaft tubular pump water inlet flow channel with bottom flow guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211820084U (en) |
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2020
- 2020-01-16 CN CN202020095226.5U patent/CN211820084U/en active Active
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