CN113123974A - Double-shell high-speed solid-liquid mixed transportation pump - Google Patents
Double-shell high-speed solid-liquid mixed transportation pump Download PDFInfo
- Publication number
- CN113123974A CN113123974A CN202110568302.9A CN202110568302A CN113123974A CN 113123974 A CN113123974 A CN 113123974A CN 202110568302 A CN202110568302 A CN 202110568302A CN 113123974 A CN113123974 A CN 113123974A
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- Prior art keywords
- pump
- inner shell
- cover plate
- shell
- double
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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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
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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
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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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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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
- F04D29/42—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
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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
- F04D29/42—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
- F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Abstract
The invention discloses a double-shell high-speed solid-liquid mixed delivery pump, which comprises a pump body and a pump cover, wherein the pump cover is provided with a rotating shaft, a flow channel is arranged in the pump body, the rotating shaft is provided with an impeller, the pump body comprises a pump inner shell and a pump outer shell, the pump inner shell consists of a pump inner shell I, a pump inner shell II and a pump inner shell III, the impeller is a closed impeller consisting of a rear cover plate, a front cover plate and blades, the rear cover plate and the front cover plate are respectively divided into two parts, one part of the rear cover plate and the front cover plate are tightly connected with the pump inner shell, the other part of the rear cover plate and the. When the quick-wear part is used, only the internal overflowing part needs to be replaced when the quick-wear part is replaced, so that the maintenance cost is reduced; the pump inner shell consists of a pump inner shell I, a pump inner shell II and a pump inner shell III, and a certain worn pump inner shell can be treated respectively, so that the replacement cost is greatly reduced; the back cover plate and the front cover plate of the impeller are divided into two parts, so that the replaceability of the double-shell high-speed solid-liquid mixed transportation pump is further improved.
Description
Technical Field
The invention belongs to the technical field of pumps, and particularly relates to a double-shell high-speed solid-liquid mixed delivery pump.
Background
The pump is used as a medium conveying device and is widely applied to various aspects of national economy, such as irrigation and drainage of farmlands, underground ventilation and underground drainage in mining industry, liquid conveying in hydraulic coal mining, blast air and fluid conveying of smelting furnaces in metallurgical industry, oil and water conveying in petroleum industry, fluid medium conveying in chemical industry, urban water supply and drainage, naval vessels, power systems of aerospace and the like. The medium conveyed by the pump can convey oil, acid liquor, alkali liquor, liquid-solid mixture, liquid metal at high temperature and liquid gas at ultralow temperature besides water, and the pump can not be operated in occasions where the fluid needs to flow spontaneously.
The traditional centrifugal pump mainly comprises a pump body, a bearing, an impeller and a shaft seal device, wherein a medium inlet, a medium outlet and a flow channel for connecting the medium inlet and the medium outlet are arranged on the pump body. Generally, the impeller is mostly a closed impeller, and when a fluid containing more particles is conveyed at a high speed, the particles in the medium can impact and corrode the inside of the pump body, so that the pump body and internal parts thereof are abraded too fast, and the service life of the pump body is shortened. Aiming at the problems, the invention provides a double-shell high-speed solid-liquid mixed transportation pump with easily replaced wearing parts.
Disclosure of Invention
The invention aims to provide a double-shell high-speed solid-liquid mixed conveying pump to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a double-shell high-speed solid-liquid mixed transportation pump comprises a pump body, wherein a pump cover is fixed at an opening at one end of the pump body through bolts, a rotatable rotating shaft is arranged on the axial lead of the pump cover, a shaft seal device is arranged between the pump cover and the rotating shaft, a flow passage is arranged in the pump body, an impeller is arranged after the rotating shaft extends into the flow passage, the pump body comprises a pump inner shell and a pump outer shell, the pump inner shell consists of a pump inner shell I tightly connected with the pump cover through screws, a pump inner shell II and a pump inner shell III tightly connected with the pump outer shell, the impeller is a closed impeller consisting of a rear cover plate, a front cover plate and blades in the middle at two sides, the rear cover plate and the front cover plate are both formed by two separable parts, the rear cover plate and the front cover plate close to the outer edge of the impeller are tightly connected with the pump inner shell through bolts, and the rear cover plate and the front cover, and the pump body is provided with a medium inlet and a medium outlet which are communicated through the flow channel.
Preferably, the shaft sealing device is a mechanical seal, and a seal flushing device is installed at the mechanical seal.
Preferably, an inducer positioned in the medium inlet is fixed on the rotating shaft.
Preferably, a sealing ring is arranged between the impeller and the pump inner shell.
Preferably, the sealing ring is composed of a group of U-shaped sheets, the axial thickness of each U-shaped sheet is smaller than the radial width of each U-shaped sheet, each U-shaped sheet is divided into an upper U-shaped sheet and a lower U-shaped sheet, and the sealing ring is formed by mutually meshing the upper U-shaped sheet and the lower U-shaped sheet.
Preferably, the material of the pump inner shell is high-chromium wear-resistant alloy Cr 26.
Preferably, the pump casing is made of martensitic stainless steel.
Preferably, the pump shell is provided with a nitrogen inlet and outlet hole, and an inlet of the pump shell is provided with a nitrogen purging and flow regulating device.
Compared with the prior art, the invention has the beneficial effects that:
1. when the fluid flows in the pump body, the fluid only passes through the overflowing part in the inner shell of the pump, and only the overflowing part in the pump body needs to be replaced when the wearing part is replaced, so that the maintenance cost is reduced;
2. the pump inner shell consists of a pump inner shell I, a pump inner shell II and a pump inner shell III, a certain worn pump inner shell can be treated in a targeted manner, and the pump inner shell is fixed by screws, is convenient to disassemble, assemble and replace, so that the replacement cost is greatly reduced;
3. the back shroud and the front shroud of impeller have all been divided into two parts, through setting up like this, will further increase the replaceability of this kind of high-speed solid-liquid multiphase pump of double housing to avoid the maintenance mode of a wearing and tearing whole replacement, very big reduction the replacement cost.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of the impeller structure of the present invention;
FIG. 3 is a schematic axial view of a blade and backplate of the present invention;
FIG. 4 is a schematic diagram of the inner housing of the pump of the present invention;
fig. 5 is an enlarged schematic view of a portion a of fig. 1.
In the figure: 1. a pump body; 2. a pump cover; 3. a rotating shaft; 4. a shaft seal device; 5. a flow channel; 6. an impeller; 61. a rear cover plate; 62. a front cover plate; 63. a blade; 7. a pump inner casing; 71. a first pump inner shell; 72. a second pump inner shell; 73. a third pump inner shell; 8. a pump housing; 9. a media inlet port; 10. a medium outflow port; 11. sealing the flushing device; 12. an inducer; 13. a seal ring; 14. and a nitrogen purging and flow regulating device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1-5, the present invention provides a technical solution: a double-shell high-speed solid-liquid mixed transportation pump comprises a pump body 1, wherein a pump cover 2 is fixed at an open end of the pump body 1 through bolts, a rotatable rotating shaft 3 is arranged on the axial lead of the pump cover 2, a shaft seal device 4 is arranged between the pump cover 2 and the rotating shaft 3, a flow channel 5 is arranged in the pump body 1, an impeller 6 is arranged in the flow channel 5 after the rotating shaft 3 extends, the pump body 1 comprises a pump inner shell 7 and a pump outer shell 8, the pump inner shell 7 consists of a pump inner shell 71 which is tightly connected with the pump cover 2 through screws, a pump inner shell II 72 and a pump inner shell III 73 which are tightly connected with the pump outer shell 8, the impeller 6 is a closed impeller consisting of a rear cover plate 61, a front cover plate 62 and blades 63 at the middle part, the rear cover plate 61 and the front cover plate 62 are both formed through separable two parts, the rear cover plate 61 and the front cover plate 62 which are close to the outer edge of the impeller 6 are tightly, the rear cover plate 61 and the front cover plate 62 close to the rotating shaft 3 are combined with the vanes 63, and the pump body 1 is provided with a medium inlet 9 and a medium outlet 10 which are communicated through the flow passage 5.
In the embodiment, when fluid flows in the pump body 1, the fluid only passes through the overflowing part in the pump inner shell 7, the pump outer shell 8 does not contact the fluid, and only the overflowing part in the pump inner shell needs to be replaced when a wearing part is replaced, so that the maintenance cost caused by the corrosion damage of the fluid to the shell is greatly reduced; the pump inner shell 7 consists of a pump inner shell I71 which is tightly connected with the pump cover 2 through screws, and a pump inner shell II 72 and a pump inner shell III 73 which are tightly connected with the pump outer shell 8, so that a certain worn pump inner shell 7 can be treated in a targeted manner, and the pump inner shell 7 is fixed through screws, is convenient to disassemble, assemble and replace, and greatly reduces the replacement cost; the back shroud 61 and the front shroud 62 of impeller 6 closed impeller have all been divided into two parts, through setting up like this, will further increase the replaceability of this kind of high-speed solid-liquid mixing pump of double housing, and after partly wearing and tearing inefficacy of back shroud 61 and front shroud 62 that are separated, alright with light replacement to avoided the maintenance mode of the whole replacement of a department's wearing and tearing, very big reduction the replacement cost.
Specifically, the shaft seal device 4 is a mechanical seal, and a seal flushing device 11 is installed at the mechanical seal.
In this embodiment, can take away because the high-speed operation of pump produces a large amount of heats through washing, prevent the temperature rise in the sealed chamber, avoid lubricating oil to lose efficacy because of high temperature.
Specifically, the rotating shaft 3 is fixed with an inducer 12 positioned in the medium inlet 9.
In this embodiment, fluid is facilitated to enter the pump inner housing 7 from the media inlet 9.
Specifically, a sealing ring 13 is arranged between the impeller 6 and the pump inner casing 7.
In this embodiment, sealing ring 13 can prevent effectively that filths such as ore pulp from oozing from pump inner shell 7, and inside leakage flow reduces by a wide margin, and work efficiency improves, has the effect of showing energy saving to a certain extent.
Specifically, the sealing ring 13 is composed of a group of U-shaped sheets, the axial thickness of which is smaller than the radial width of the U-shaped sheets, the U-shaped sheets are divided into an upper U-shaped sheet and a lower U-shaped sheet, and the sealing ring 13 is formed by mutually meshing the upper U-shaped sheet and the lower U-shaped sheet.
In the embodiment, the upper U-shaped sheet and the lower U-shaped sheet are alternately meshed with each other to form a labyrinth seal, so that the leakage flow of the pump is greatly reduced, the working efficiency is improved, and the operation is simple and the overhaul is convenient.
Specifically, the material of the pump inner casing 7 is high-chromium wear-resistant alloy Cr 26.
In this embodiment, the wear resistance and erosion resistance of the pump inner casing 7 under high-speed fluid movement are enhanced.
Specifically, the pump casing 8 is made of martensitic stainless steel.
In this embodiment, the pump casing 8 is made to have a good tensile strength at a high temperature.
Specifically, the pump housing 8 is provided with a nitrogen inlet and outlet hole, and an inlet of the pump housing is provided with a nitrogen purging and flow regulating device 14.
In the embodiment, the nitrogen entering amount into the pump outer shell 8 can be adjusted by the nitrogen purging and flow adjusting device 14, the nitrogen is used for purging between the pump inner shell 7 and the pump outer shell 8, the overhigh temperature between the pump inner shell 7 and the pump outer shell 8 can be effectively reduced, and the catalyst particles are effectively prevented from coking.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
The working principle is as follows: when fluid flows in the pump body 1, the fluid only passes through the overflowing part in the pump inner shell 7, the pump outer shell 8 does not contact the fluid, and only the overflowing part in the pump inner shell needs to be replaced when a wearing part is replaced, so that the maintenance cost caused by the corrosion damage of the fluid to the pump shell is greatly reduced; the pump inner shell 7 consists of a pump inner shell I71 which is tightly connected with the pump cover 2 through screws, and a pump inner shell II 72 and a pump inner shell III 73 which are tightly connected with the pump outer shell 8, so that a certain worn pump inner shell 7 can be treated in a targeted manner, and the pump inner shell 7 is fixed through screws, is convenient to disassemble, assemble and replace, and greatly reduces the replacement cost; the back shroud 61 and the front shroud 62 of impeller 6 closed impeller have all been divided into two parts, through setting up like this, will further increase the replaceability of this kind of high-speed solid-liquid mixing pump of double housing, and after partly wearing and tearing inefficacy of back shroud 61 and front shroud 62 that are separated, alright with light replacement to avoided the maintenance mode of the whole replacement of a department's wearing and tearing, very big reduction the replacement cost.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a high-speed solid-liquid of double-shell thoughtlessly defeated pump, its characterized in that, including the pump body (1), pump body (1) one end is uncovered and uncovered department has pump cover (2) through the bolt fastening, rotatable pivot (3) are equipped with on pump cover (2) axial lead, pump cover (2) with shaft seal device (4) are equipped with between pivot (3), be equipped with runner (5) in the pump body (1), pivot (3) extend to install impeller (6) in runner (5) the back, pump body (1) are including pump inner shell (7) and pump outer shell (8), pump inner shell (7) by through the screw with pump cover (2) zonulae occludens pump inner shell (71) and with pump outer shell (8) zonulae occludens pump inner shell two (72) and pump inner shell three (73) are constituteed, impeller (6) are back shroud (61) of both sides, The closed impeller is characterized in that the closed impeller is composed of a front cover plate (62) and a middle blade (63), the rear cover plate (61) and the front cover plate (62) are composed of two separable parts, the rear cover plate (61) and the front cover plate (62) which are close to the outer edge of the impeller (6) are tightly connected with the pump inner shell (7) through bolts, the rear cover plate (61) and the front cover plate (62) which are close to the rotating shaft (3) are combined with the blade (63) mutually, and a medium inlet (9) and a medium outlet (10) which are communicated through the flow channel (5) are arranged on the pump body (1).
2. The double-shell high-speed solid-liquid mixing and conveying pump according to claim 1, characterized in that the shaft seal device (4) is a mechanical seal and a seal flushing device (11) is installed at the mechanical seal.
3. The double-shell high-speed solid-liquid mixture pump according to claim 1, wherein the rotating shaft (3) is fixed with an inducer (12) positioned in the medium inlet (9).
4. The double-casing high-speed solid-liquid mixture pump according to claim 1, wherein a sealing ring (13) is arranged between the impeller (6) and the pump inner casing (7).
5. The dual-casing high-speed solid-liquid mixture pump according to claim 4, wherein the sealing ring (13) is formed by a set of U-shaped thin sheets with axial thickness smaller than radial width dimension, the U-shaped thin sheets are divided into an upper U-shaped thin sheet and a lower U-shaped thin sheet, and the sealing ring (13) is formed by mutually meshing the upper U-shaped thin sheet and the lower U-shaped thin sheet.
6. The double-shell high-speed solid-liquid mixed delivery pump according to claim 1, wherein the material of the pump inner shell (7) is high-chromium wear-resistant alloy Cr 26.
7. The double-shell high-speed solid-liquid mixed transportation pump according to claim 1, wherein the material of the pump shell (8) is martensitic stainless steel.
8. The double-casing high-speed solid-liquid mixed transportation pump according to claim 1, wherein the pump casing (8) is provided with a nitrogen gas inlet and outlet hole and the inlet thereof is provided with a nitrogen gas purging and flow regulating device (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568302.9A CN113123974B (en) | 2021-05-24 | 2021-05-24 | Double-shell high-speed solid-liquid mixed transportation pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568302.9A CN113123974B (en) | 2021-05-24 | 2021-05-24 | Double-shell high-speed solid-liquid mixed transportation pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113123974A true CN113123974A (en) | 2021-07-16 |
| CN113123974B CN113123974B (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110568302.9A Active CN113123974B (en) | 2021-05-24 | 2021-05-24 | Double-shell high-speed solid-liquid mixed transportation pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN113123974B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892518A (en) * | 2023-09-08 | 2023-10-17 | 成都理工大学 | Multistage disc pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425551A (en) * | 2011-12-21 | 2012-04-25 | 嘉利特荏原泵业有限公司 | Dual-shell small-flow centrifugal pump |
| CN202531488U (en) * | 2012-04-18 | 2012-11-14 | 甘肃柯登精密铸造泵阀有限公司 | Wear-resistant starch pump |
| CN204226261U (en) * | 2014-02-16 | 2015-03-25 | 杭州大路实业有限公司 | Rotary pump Novel sealing ring |
| CN208546349U (en) * | 2018-06-27 | 2019-02-26 | 吉林森工集团泉阳泉饮品有限公司 | A kind of drinking water production softening water pump |
| CN111472979A (en) * | 2020-04-10 | 2020-07-31 | 沈阳格瑞德泵业有限公司 | Double-shell cantilever type oil slurry pump with independent inner shell |
-
2021
- 2021-05-24 CN CN202110568302.9A patent/CN113123974B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425551A (en) * | 2011-12-21 | 2012-04-25 | 嘉利特荏原泵业有限公司 | Dual-shell small-flow centrifugal pump |
| CN202531488U (en) * | 2012-04-18 | 2012-11-14 | 甘肃柯登精密铸造泵阀有限公司 | Wear-resistant starch pump |
| CN204226261U (en) * | 2014-02-16 | 2015-03-25 | 杭州大路实业有限公司 | Rotary pump Novel sealing ring |
| CN208546349U (en) * | 2018-06-27 | 2019-02-26 | 吉林森工集团泉阳泉饮品有限公司 | A kind of drinking water production softening water pump |
| CN111472979A (en) * | 2020-04-10 | 2020-07-31 | 沈阳格瑞德泵业有限公司 | Double-shell cantilever type oil slurry pump with independent inner shell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892518A (en) * | 2023-09-08 | 2023-10-17 | 成都理工大学 | Multistage disc pump |
| CN116892518B (en) * | 2023-09-08 | 2023-11-24 | 成都理工大学 | Multistage disc pump |
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| Publication number | Publication date |
|---|---|
| CN113123974B (en) | 2022-11-18 |
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