CN212454959U - Ultra-small flow petrochemical process pump - Google Patents
Ultra-small flow petrochemical process pump Download PDFInfo
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- CN212454959U CN212454959U CN202020740329.2U CN202020740329U CN212454959U CN 212454959 U CN212454959 U CN 212454959U CN 202020740329 U CN202020740329 U CN 202020740329U CN 212454959 U CN212454959 U CN 212454959U
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- impeller
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Abstract
The utility model relates to an ultra-small flow petrochemical industry process pump belongs to industrial chemical industry process pump technical field. The impeller is arranged at the first end of the pump shaft and is connected with the pump shaft through an impeller nut, and the second end of the pump shaft penetrates through the outer shell; the impeller comprises a quincunx impeller hub, blades are vertically arranged on the impeller hub, and the blades are positioned on one side of an outlet of the impeller. One side of the impeller outlet is the side of the impeller close to the inner shell. The utility model discloses reduce hydraulic pulsation, increased the wearability, prolonged equipment life.
Description
Technical Field
The utility model relates to an ultra-small flow petrochemical industry process pump belongs to industrial chemical industry process pump technical field.
Background
The centrifugal pump is widely applied to the fields of slag discharge, ore discharge, sand excavation and the like in the industries of mines, metallurgy, electric power, chemical industry and the like. The centrifugal pump adopts the centrifugal force principle, utilizes the impeller blade of high-speed rotation to drive fluid and rotate, throws away fluid, reaches the transport purpose. Centrifugal pumps which generally adopt impellers with two structural forms of open type and closed type are used as chemical process pumps. The prior chemical process pump has the following technical defects:
1. the impeller is easy to damage, and the chemical process pump is easy to stop;
2. the pump is easy to grind or corrode, and parts are damaged, so that the chemical process pump has the defect of short service life.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the ultra-small flow petrochemical process pump is provided, the hydraulic pulsation is reduced, the wear resistance is improved, and the service life of equipment is prolonged.
The utility model discloses a super small flow petrochemical industry process pump, including the shell body, be equipped with the inner shell in the shell body, inner shell one side is equipped with the back antifriction plate, is equipped with the impeller between inner shell and the back antifriction plate, the impeller is located pump shaft first end, the impeller passes through the impeller nut and connects the pump shaft, the pump shaft second end runs through the shell body setting;
the impeller comprises a quincunx impeller hub, blades are vertically arranged on the impeller hub, and the blades are positioned on one side of an outlet of the impeller. One side of the impeller outlet is the side of the impeller close to the inner shell.
Working process or working principle:
the first end of the outer shell is connected with the pump body, the pump body is provided with an inlet, the top end of the outer shell is provided with an outlet, fluid enters from the inlet, the impeller rotates at a high speed, and the conveyed fluid is sent out through the outlet.
The blades are perpendicular to the impeller hub, the impeller hub is arranged to be quincunx, the impeller outlet is quincunx, hydraulic pulsation is reduced, impact pressure of fluid on the impeller is reduced, impact abrasion of the blades and the impeller hub is reduced, and the service life of the impeller is prolonged.
Through setting up the back antifriction plate, anti antifriction effect has prolonged equipment life when carrying particulate matter.
Further preferably, the inner housing and the rear wear plate enclose an annular volute chamber adapted to the impeller.
Further preferably, the annular volute face of the inner casing is machined completely.
Further preferably, said blades are integrally formed with the impeller hub.
Further preferably, the blades are straight blades, the outer end faces of the straight blades are flush with the impeller hub, and one ends of the straight blades close to the axial center are gradually narrowed from two sides to the center.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up the quincunx impeller, the blade is arranged perpendicularly with the impeller hub, and the impeller hub sets up to the quincunx, and the impeller export is the quincunx, reduces hydraulic pulsation, has reduced the fluid and to the impact pressure of impeller, has reduced the impact wear of blade and impeller hub, has prolonged impeller life.
2. The inner shell and the rear wear-resisting plate enclose an annular volute chamber matched with the impeller. One side of the annular volute of the inner shell is completely processed. The annular volute and the flow channel are all processed by milling or grinding, and after the flow channel is processed, the smooth finish is good, the flow efficiency is high, the radial force variation amplitude is minimum when the flow is changed, and the service life of the equipment is prolonged.
3. Through the effect of the rear wear-resisting plate, the wear-resisting effect is achieved during conveying of granular substances, and the service life of equipment is prolonged.
Drawings
Figure 1 is a schematic structural view of an embodiment of the present invention,
figure 2 is a schematic perspective view of the impeller,
figure 3 is a front view schematic diagram of the impeller,
figure 4 is a schematic cross-sectional view a-a of figure 3,
fig. 5 is a right side view of fig. 3.
In the figure: 1. the pump body 2, an outer shell 3, an inner shell 4, an impeller 5, a rear wear-resisting plate 6, a pump shaft 7, a bearing frame 8, an impeller nut 9, a bearing 10, an inlet 11 and an outlet;
4.1, impeller hub 4.2, blades.
Detailed Description
The technical solution in the embodiments of the present invention will be further clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention:
as shown in fig. 1, the ultra-small flow petrochemical process pump of the present invention comprises an outer casing 2, an inner casing 3 is arranged in the outer casing 2, a rear wear-resistant plate 5 is arranged on one side of the inner casing 3, an impeller 4 is arranged between the inner casing 3 and the rear wear-resistant plate 5, the impeller 4 is arranged at a first end of a pump shaft 6, the impeller 4 is connected with the pump shaft 6 through an impeller nut 8, and a second end of the pump shaft 6 penetrates through the outer casing 2; and a bearing 9 is arranged at the second end of the pump shaft, and the bearing 9 is supported and connected with the outer shell 2 through a bearing bracket 7.
As shown in fig. 2-5, the impeller 4 includes a quincunx impeller hub 4.1, and the impeller hub 4.1 is vertically provided with blades 4.2, and the blades 4.2 are positioned at the outlet side of the impeller. The blades 4.2 and the impeller hub 4.1 may be integrally formed. The impeller inlet and the impeller outlet are radial straight blades of 90 degrees, and the impeller outlet is in a quincunx shape, so that hydraulic pulsation is reduced; the blades 4.2 are straight blades, the outer end faces of the straight blades are flush with the impeller hub 4.1, and one ends of the straight blades close to the axis gradually narrow from two sides to the center. As shown in fig. 3, the first ends of the straight blades are flush with the outer end surface of the impeller hub, the second ends of the straight blades are arranged close to the center line of the impeller hub, and the second ends of the straight blades are gradually narrowed.
As shown in fig. 1, the inner housing 3 and the rear wear plate 5 enclose an annular volute adapted to the impeller 4. The annular volute surface of the inner shell 3 is completely processed. The annular volute is processed by 100% of a flow channel, milling or grinding can be adopted, the smooth finish is good after the flow channel is processed, the flowing efficiency is high, and the radial force variation amplitude is minimum when the flow rate is changed.
The inner shell is used as a replaceable volute embedded liner and is designed to be matched with the shape of the impeller, a flow channel in the annular volute chamber is smooth, and the change range of radial force is minimum when the flow is changed, so that the inner shell is used as the volute embedded liner and can stably run on a working point with a specific flow lift.
Working process or working principle:
the first end of the outer shell 2 is connected with the pump body 1, the pump body 1 is provided with an inlet 10, the top of the outer shell 2 is provided with an outlet 11, fluid enters from the inlet 10, the impeller 4 rotates at a high speed, and the conveyed fluid is sent out through the outlet 11.
Research shows that when a fluid mixed with solid and liquid is conveyed, after the fluid is operated for a period of time, the scouring of the fluid and the pressure difference between the two sides of the impeller are large, so that blades of the impeller are easily and quickly abraded, the working performance and the service life of the centrifugal pump are influenced, and the impeller is damaged in severe cases.
According to the ultra-small flow petrochemical process pump, the blades are perpendicular to the impeller hub, the impeller hub is arranged to be quincunx, the impeller outlet is quincunx, hydraulic pulsation is reduced, impact pressure of fluid on the impeller is reduced, impact abrasion of the blades and the impeller hub is reduced, and the service life of the impeller is prolonged.
Researches show that the conveying liquid contains solid particles and has corrosivity, and the pump body is easily abraded seriously, so that the service life of the chemical process pump is short.
The rear wear-resisting plate is arranged to play a role in resisting wear when conveying granular substances; the inner housing 3 and the rear wear plate 5 enclose an annular volute adapted to the impeller 4. The annular volute surface of the inner shell 3 is completely processed. The annular volute and the flow channel are all processed by milling or grinding, and after the flow channel is processed, the smooth finish is good, the flow efficiency is high, the radial force variation amplitude is minimum when the flow is changed, and the service life of the equipment is prolonged.
The utility model discloses in to the direction of structure and the description of relative position relation, it is right not to constitute like the description from top to bottom all around the utility model discloses a restriction only is the description convenient.
Claims (5)
1. The ultra-small-flow petrochemical process pump is characterized by comprising an outer shell (2), wherein an inner shell (3) is arranged in the outer shell (2), a rear wear-resistant plate (5) is arranged on one side of the inner shell (3), an impeller (4) is arranged between the inner shell (3) and the rear wear-resistant plate (5), the impeller (4) is arranged at the first end of a pump shaft (6), the impeller (4) is connected with the pump shaft (6) through an impeller nut (8), and the second end of the pump shaft (6) penetrates through the outer shell (2);
the impeller (4) comprises a quincunx impeller hub (4.1), blades (4.2) are vertically arranged on the impeller hub (4.1), and the blades (4.2) are positioned on one side of an impeller outlet.
2. The ultra small flow petrochemical process pump according to claim 1, wherein the inner housing (3) and the rear wear plate (5) enclose an annular volute adapted to the impeller (4).
3. The ultra small flow petrochemical process pump according to claim 2, wherein the annular volute side of the inner casing (3) is machined entirely.
4. A pump according to any of claims 1-3, characterized in that the vanes (4.2) are formed integrally with the impeller hub (4.1).
5. The ultra-small flow petrochemical process pump according to claim 4, wherein the vanes (4.2) are straight vanes, the outer end faces of the straight vanes are flush with the impeller hub (4.1), and the ends of the straight vanes close to the axial center gradually narrow from both sides to the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020740329.2U CN212454959U (en) | 2020-05-07 | 2020-05-07 | Ultra-small flow petrochemical process pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020740329.2U CN212454959U (en) | 2020-05-07 | 2020-05-07 | Ultra-small flow petrochemical process pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212454959U true CN212454959U (en) | 2021-02-02 |
Family
ID=74465349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020740329.2U Expired - Fee Related CN212454959U (en) | 2020-05-07 | 2020-05-07 | Ultra-small flow petrochemical process pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212454959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565772A (en) * | 2021-07-02 | 2021-10-29 | 鑫磊压缩机股份有限公司 | Air compressor with small-clearance type ring matching structure and type ring machining method |
-
2020
- 2020-05-07 CN CN202020740329.2U patent/CN212454959U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565772A (en) * | 2021-07-02 | 2021-10-29 | 鑫磊压缩机股份有限公司 | Air compressor with small-clearance type ring matching structure and type ring machining method |
| CN113565772B (en) * | 2021-07-02 | 2022-04-01 | 鑫磊压缩机股份有限公司 | Air compressor with small-clearance type ring matching structure and type ring machining method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |