CN113107855B - Radial clearance adjusting structure and method and emergency drainage pump - Google Patents
Radial clearance adjusting structure and method and emergency drainage pump Download PDFInfo
- Publication number
- CN113107855B CN113107855B CN202110445604.7A CN202110445604A CN113107855B CN 113107855 B CN113107855 B CN 113107855B CN 202110445604 A CN202110445604 A CN 202110445604A CN 113107855 B CN113107855 B CN 113107855B
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- cylinder
- tile
- tiles
- fixing bolt
- jacking
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000012535 impurity Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Images
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
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
-
- 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
- F04D29/007—Details, component parts, or accessories 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
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/528—Casings; Connections of working fluid for axial pumps 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of emergency drainage pumps, in particular to a radial clearance adjusting structure, an adjusting method and an emergency drainage pump, wherein the radial clearance adjusting structure comprises a cylinder, a rotating body which is coaxially arranged is arranged in the cylinder, an annular cavity structure is formed between the rotating body and the cylinder, a plurality of arc-shaped tiles are radially arranged in the annular cavity, and the tiles can slide in the annular cavity in the radial direction; a fixing bolt, a fixing nut and a jacking screw are arranged on the outer side of the cylinder, the fixing bolt sequentially penetrates through the fixing nut, the cylinder is connected with the tile in a rotating mode, and the jacking screw penetrates through the cylinder and is connected with the tile in a butting mode; according to the invention, by adopting a screw jacking method, the radial clearance between the outer edge of the axial-flow impeller and the tile is adjusted as necessary, so that the rotation of the axial-flow impeller is not influenced, and the clearance is ensured to be in a reasonable range, thereby reducing the leakage hydraulic loss of the outer edge of the axial-flow impeller and improving the working efficiency and the working lift.
Description
The technical field is as follows:
the invention relates to the technical field of emergency drainage pumps, in particular to a radial clearance adjusting structure; also relates to a radial clearance adjusting method; still relate to a high-speed emergency drainage pump.
Background art:
a high-speed emergency drainage pump is one of axial flow pumps and has the characteristics of low lift, large flow and the like. The axial-flow impeller is a core part, the performance of the axial-flow impeller directly influences the running condition of the whole pump, and because the running environment of the high-speed emergency drainage pump contains impurities such as activated sludge, fishing nets, animal hair fibers or other suspended matters, and the linear velocity of the outer edge of the axial-flow impeller is the fastest usually, in practical engineering application, the inner abrasion of a gap between the outer edge of the axial-flow impeller and the wall of a water inlet section cylinder is very serious, the gap can be enlarged along with the increase of time, the phenomenon can cause the lift of the water pump to be greatly reduced, the efficiency of the water pump to be reduced, serious cavitation can occur, even if the accessory axial-flow impeller or the water inlet section cylinder is replaced, the design parameters can not be reached, and the unit can not meet the basic requirement of drainage.
The invention content is as follows:
in order to solve the technical problems, the invention provides a radial clearance adjusting structure, which solves the technical problems that: after the high-speed emergency drainage pump is abraded in the using process, the gap between the cylindrical wall of the water inlet end and the impeller is increased, the lift is rapidly reduced, and the operation effect of the whole machine is reduced. The invention also aims to provide the high-speed emergency drainage pump. It is a further object of the present invention to provide a radial clearance adjustment method. In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a radial clearance adjusting structure comprises a cylinder, wherein a rotating body which is coaxially arranged is arranged in the cylinder, an annular cavity structure is formed between the rotating body and the cylinder, a plurality of arc-shaped tiles are radially arranged in the annular cavity, and the tiles can slide in the annular cavity along the radial direction; the outer side of the cylinder is provided with a fixing bolt, a fixing nut and a jacking screw, the fixing bolt sequentially penetrates through the fixing nut, the cylinder and the tile to be connected in a rotating mode, and the jacking screw penetrates through the cylinder and is connected with the tile in a butting mode.
Furthermore, the lower part of the cylinder is provided with a limiting block extending inwards, and the upper surface of the limiting block is connected with the lower surface of the tile in a sliding mode.
Furthermore, the number of the tiles is at least three, and the tiles are made of ceramic, stainless steel or high-chromium cast iron.
Furthermore, the connection point of the fixing bolt and the tile is positioned on the radial bisector of the tile; the jacking screws are arranged on the upper side and the lower side of the fixing bolt.
Further, the tiles slide in the radial direction in the range of 0.1-10 mm.
The invention also provides a radial clearance adjusting method, which adopts any one of the radial clearance adjusting structures and comprises a first mode and a second mode, wherein the first mode comprises the following steps:
rotating the fixing nut to prevent the fixing nut from contacting with the outer wall of the cylinder;
the jacking bolt is rotated in the positive direction to push the tiles inwards, so that the tiles are abutted against the rotating body;
reversely rotating the jacking bolt to enable the jacking bolt and the tile to reach a preset gap;
rotating the fixing nut to enable the fixing nut to be in contact with the outer wall of the cylinder, and driving the tile to be abutted against the jacking bolt through the fixing bolt;
the method comprises the following two steps:
rotating the fixing nut to make the fixing nut contact with the outer wall of the cylinder and make the fixing bolt not rotate;
the fixing bolt is rotated in the forward direction, and the fixing bolt drives the tiles to move inwards and abut against the rotating body;
the fixing bolt is rotated reversely, and the fixing bolt drives the tiles to move outwards and reach a preset gap with the rotating body;
the rotating jacking bolt moves inwards to be connected with the tile in an interference mode.
The invention also provides a high-speed emergency drainage pump which comprises the radial clearance adjusting structure.
Further, the rotor is an axial flow impeller.
The beneficial effects of the invention are: according to the invention, the circular arc-shaped tiles are added on the circumferential surface of the outer edge of the axial-flow impeller of the high-speed emergency drainage pump matched with the water inlet section cylinder, and the radial gap between the outer edge of the axial-flow impeller and the tiles is adjusted by a screw jacking method if necessary, so that the rotation of the axial-flow impeller is not influenced, and the gap between the outer edge of the axial-flow impeller is ensured to be smaller, so that the gap is ensured to be in a reasonable range, the leakage hydraulic loss of the outer edge of the axial-flow impeller is reduced, the working efficiency and the working lift are improved, the cavitation performance of the water pump can be properly improved, the effective operation of a core part doing work is ensured, the structure is compact, the manufacture is convenient, the adjustment is convenient during the field operation, the overall operation is easy to realize, and the longer service life and the reliability of the high-speed emergency drainage pump are ensured.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a cross-sectional view B-B of FIG. I according to the present invention;
FIG. 3 is a schematic view of the cross-sectional structure C-C shown in FIG. one of the present inventions.
In the figure:
206. the device comprises a cylinder 207, a rotating body 208, a limiting block 209, tiles 210, fixing nuts 211, fixing bolts 212 and jacking screws.
The specific implementation mode is as follows:
to further clarify the objects, technical solutions and advantages of the present invention, the present invention will now be described in further detail with reference to fig. 1-3 and examples to better understand the method of practice of the invention, the specific embodiments of the invention being:
in the first embodiment, the radial clearance adjusting structure includes a cylinder 206, a rotating body 207 is coaxially arranged inside the cylinder 206, when the rotating body 207 works, impurities are sucked into the cylinder 206 through water flow to be crushed, and due to abrasion of the impurities, a clearance between the outer edge of the impurities and the cylinder 206 is increasingly large, so that the cutting and crushing effect is seriously affected, the lift of a water pump is greatly reduced, and serious cavitation is generated; an annular cavity structure is formed between the rotating body 207 and the cylinder 206, a plurality of arc-shaped tiles 209 are radially arranged in the annular cavity, and the tiles 209 can slide in the annular cavity along the radial direction; the outer side of the cylinder 206 is provided with a fixing bolt 211, a fixing nut 210 and a jacking screw 212, the fixing bolt 211 sequentially penetrates through the fixing nut 210, the cylinder 206 and the tile 209 to be connected in a rotating mode, the jacking screw 212 penetrates through the cylinder 206 to be connected with the tile 209 in an abutting mode, and the tile 209 slides along the radial direction by adjusting the fixing bolt 211, the fixing nut 210 and the jacking screw 212 so as to adjust a gap between the inner side wall of the tile 209 and the rotating body 207.
The lower part of the cylinder 206 is provided with a limiting block 208 extending inwards, the upper surface of the limiting block 208 is connected with the lower surface of the tile 209 in a sliding mode, and the limiting block 208 can prevent the tile 209 from deflecting along with the rotation of the fixing bolt 211.
The number of the tiles 209 is at least three, four tiles are adopted in the embodiment, and the tiles 209 are made of ceramic, stainless steel or high-chromium cast iron, so that the wear resistance can be improved, and compared with the prior art, the conveying of sewage impurities can be more competent.
The connection point of the fixing bolt 211 and the tile 209 is positioned on the radial bisector of the tile 209, so that the tile 209 can move along the radial direction as a whole and is not eccentric during adjustment; the jacking screws 212 are provided on both upper and lower sides of the fixing bolt 211 to prevent eccentricity during jacking, so that the tile 209 and the cylinder 206 are concentric.
The sliding range of the tiles 209 along the radial direction is 0.1-10 mm, so that the operational reliability of the pump can be effectively guaranteed.
The radial clearance adjusting method adopts the radial clearance adjusting structure of the embodiment, and comprises a first mode and a second mode, wherein the first mode comprises the following steps:
rotating the retaining nut 210 such that the retaining nut 210 does not contact the outer wall of the cylinder 206;
the jacking bolt is rotated forward to push the tiles 209 inwards, so that the tiles 209 are abutted to the rotating body 207;
reversely rotating the jacking bolt to enable the jacking bolt and the tile 209 to reach a preset gap;
rotating the fixing nut 210 to make the fixing nut 210 contact with the outer wall of the cylinder 206, and driving the tile 209 to abut against the jacking bolt through the fixing bolt 211;
the radial clearance adjusting method adopts any one of the radial clearance adjusting structures, and comprises a second mode and a second mode, wherein the second mode comprises the following steps:
rotating the fixing nut 210 to make the fixing nut 210 contact with the outer wall of the cylinder 206 and make the fixing bolt 211 not rotate;
the fixing bolt 211 is rotated in the forward direction, and the fixing bolt 211 drives the tile 209 to move inwards and abut against the rotating body 207;
reversely rotating the fixing bolt 211, the fixing bolt 211 drives the tile 209 to move outwards and reach a preset gap with the rotating body 207;
the rotating jacking bolts move inwardly into interference engagement with tiles 209.
In the second embodiment, the high-speed emergency drainage pump adopts the radial clearance adjusting structure of the above embodiments, and the rotating body 207 is an axial-flow impeller.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "left lower", "right upper", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Claims (7)
1. A radial clearance adjusting structure includes a cylinder (206), and a rotor (207) coaxially arranged is provided inside the cylinder (206), and is characterized in that: the rotating body (207) is an axial-flow impeller, an annular cavity structure is formed between the rotating body (207) and the cylinder (206), a plurality of arc-shaped tiles (209) are radially arranged in the annular cavity, and the tiles (209) can slide in the annular cavity in the radial direction; the outer side of the cylinder (206) is provided with a fixing bolt (211), a fixing nut (210) and a jacking screw (212), the fixing bolt (211) sequentially penetrates through the fixing nut (210), the cylinder (206) and the tile (209) to be connected in a rotating mode, and the jacking screw (212) penetrates through the cylinder (206) and is connected with the tile (209) in an abutting mode.
2. A radial gap adjusting structure as defined in claim 1, wherein: the lower part of the cylinder (206) is provided with a limiting block (208) which extends inwards, and the upper surface of the limiting block (208) is connected with the lower surface of the tile (209) in a sliding mode.
3. A radial gap adjusting structure as defined in claim 1, wherein: the number of the tiles (209) is at least three, and the tiles (209) are made of ceramic, stainless steel or high-chromium cast iron materials.
4. A radial gap adjusting structure as set forth in claim 1, wherein: the connecting point of the fixing bolt (211) and the tile (209) is positioned on the radial bisector of the tile (209); the jacking screws (212) are arranged on the upper side and the lower side of the fixing bolt (211).
5. A radial gap adjusting structure as defined in claim 1, wherein: the tiles (209) slide radially in the range of 0.1-10 mm.
6. A radial clearance adjustment method using the radial clearance adjustment structure according to any one of claims 1 to 5, characterized by comprising a first mode and a second mode, wherein the second mode includes:
rotating the fixing nut (210) to prevent the fixing nut (210) from contacting the outer wall of the cylinder (206);
the jacking bolt is rotated forward to push the tiles (209) inwards, so that the tiles (209) are abutted against the rotating body (207);
reversely rotating the jacking bolt to enable the jacking bolt and the tile (209) to reach a preset gap;
rotating the fixing nut (210) to enable the fixing nut (210) to be in contact with the outer wall of the cylinder (206), and then driving the tile (209) to be abutted against the jacking bolt through the fixing bolt (211);
the method comprises the following two steps:
rotating the fixing nut (210) to enable the fixing nut (210) to be in contact with the outer wall of the cylinder (206) and enable the fixing bolt (211) not to rotate any more;
the fixing bolt (211) is rotated in the positive direction, and the fixing bolt (211) drives the tile (209) to move inwards and abut against the rotating body (207);
the fixing bolt (211) is rotated reversely, the fixing bolt (211) drives the tile (209) to move outwards and reach a preset gap with the rotating body (207);
the rotating jacking bolts move inwardly into interference engagement with the tiles (209).
7. The utility model provides a drain pump of speedily carrying out rescue work which characterized in that: including the radial gap adjusting structure of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110445604.7A CN113107855B (en) | 2021-04-25 | 2021-04-25 | Radial clearance adjusting structure and method and emergency drainage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110445604.7A CN113107855B (en) | 2021-04-25 | 2021-04-25 | Radial clearance adjusting structure and method and emergency drainage pump |
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| Publication Number | Publication Date |
|---|---|
| CN113107855A CN113107855A (en) | 2021-07-13 |
| CN113107855B true CN113107855B (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110445604.7A Active CN113107855B (en) | 2021-04-25 | 2021-04-25 | Radial clearance adjusting structure and method and emergency drainage pump |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608131A (en) * | 2023-05-15 | 2023-08-18 | 包耀红 | Marine bidirectional transverse inclination adjusting pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2465470Y (en) * | 2001-02-26 | 2001-12-19 | 佛山柴油机厂有限公司 | Axial-flow aerator |
| CN101153614A (en) * | 2006-09-29 | 2008-04-02 | 上海东方泵业(集团)有限公司 | Adjusting device for half-opened impeller wearing plate |
| CN201437781U (en) * | 2009-06-05 | 2010-04-14 | 佛山市肯富来安德里兹泵有限公司 | Centrifugal pump capable of being convenient to adjust the clearance between front liner plate and impeller |
| JP2011236911A (en) * | 2010-05-12 | 2011-11-24 | Siemens Ag | Passage wall section for an annular flow passage of an axial turbomachine with radial gap adjustment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2920102A1 (en) * | 1979-05-18 | 1980-11-20 | Bosch Gmbh Robert | FUEL SUPPLY UNIT |
| CA2380440A1 (en) * | 1999-07-29 | 2001-02-08 | Jonathan B. Rosefsky | Ribbon drive pumping apparatus and method |
| CN201963590U (en) * | 2011-02-28 | 2011-09-07 | 汲长江 | Hand-operated adjustment and compensation device for centrifugal pump impeller seal |
| RU2597382C1 (en) * | 2012-09-18 | 2016-09-10 | Грундфос Холдинг А/С | Pumping device |
| US10344612B2 (en) * | 2017-01-13 | 2019-07-09 | United Technologies Corporation | Compact advanced passive tip clearance control |
-
2021
- 2021-04-25 CN CN202110445604.7A patent/CN113107855B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2465470Y (en) * | 2001-02-26 | 2001-12-19 | 佛山柴油机厂有限公司 | Axial-flow aerator |
| CN101153614A (en) * | 2006-09-29 | 2008-04-02 | 上海东方泵业(集团)有限公司 | Adjusting device for half-opened impeller wearing plate |
| CN201437781U (en) * | 2009-06-05 | 2010-04-14 | 佛山市肯富来安德里兹泵有限公司 | Centrifugal pump capable of being convenient to adjust the clearance between front liner plate and impeller |
| JP2011236911A (en) * | 2010-05-12 | 2011-11-24 | Siemens Ag | Passage wall section for an annular flow passage of an axial turbomachine with radial gap adjustment |
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| CN113107855A (en) | 2021-07-13 |
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Denomination of invention: A radial clearance adjustment structure, adjustment method, and emergency drainage pump Granted publication date: 20221230 Pledgee: Yutai County Branch of China Postal Savings Bank Co.,Ltd. Pledgor: JINING ANTAI MINE EQUIPMENT MANUFACTURING Co.,Ltd. Registration number: Y2024980012510 |
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