CN215409226U - Multistage pressure boost centrifugal water pump - Google Patents
Multistage pressure boost centrifugal water pump Download PDFInfo
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- CN215409226U CN215409226U CN202121707730.7U CN202121707730U CN215409226U CN 215409226 U CN215409226 U CN 215409226U CN 202121707730 U CN202121707730 U CN 202121707730U CN 215409226 U CN215409226 U CN 215409226U
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Abstract
The utility model provides a multistage pressure boost centrifugal water pump, includes pump cover, pump case and pump seat, the bottom of pump cover and the top fixed connection of pump case, the cavity internally mounted that pump cover and pump case found has the one-level impeller, forms first order pressure boost structure. And a spacing ring is arranged between the primary impeller and the secondary impeller and used for limiting the distance between the primary impeller and the secondary impeller. The bottom of the pump shell is fixedly connected with the top of the pump base, and a second-stage impeller is arranged in a cavity formed by the pump shell and the pump base to form a second-stage pressurizing structure. The pump shaft penetrates through the pump seat to be fixedly connected with the first-stage impeller and the second-stage impeller, and the pump shaft is connected with the power source. The utility model removes guide vanes between the impellers of the traditional multistage booster water pump, reduces parts, has simple structure, improves the assembly efficiency and reduces the production cost.
Description
Technical Field
The utility model relates to the technical field of water pumps, in particular to a multi-stage supercharging centrifugal water pump.
Background
Centrifugal pumps rely on the action of rotating impellers on the fluid to transfer the mechanical energy of the prime mover to the fluid. As the speed energy and the pressure energy of the acting liquid are increased in the process of flowing from the inlet to the outlet of the impeller, the liquid discharged by the impeller passes through the extrusion chamber, most of the speed energy is converted into the pressure energy, and then the pressure energy is conveyed out along the discharge pipeline, at the moment, the vacuum or low pressure is formed at the inlet of the impeller due to the discharge of the liquid, the liquid in the liquid pool at the suction inlet is pressed into the inlet of the impeller under the action of the liquid level pressure (atmospheric pressure), and then the rotating impeller continuously sucks and discharges the liquid.
The water pump in the field of the centrifugal pump is either a single-stage pump or a multi-stage pump, the pressure of the single-stage pump is low, the flow is large, the pressure of the multi-stage pump is high, the flow is low, and the multi-stage pump is applied to different fields. The double-stage water pump has the characteristics of high pressure, small volume and the like, but has a complex structure, generally comprises a pump cover, an impeller, a guide vane, a pump shell and a pump seat, and has more parts and higher processing and assembling difficulty. The guide vane prevents water flow from rotating in the pump shell, so that water flowing out of the first-stage water pump impeller is forced to be guided to the second stage, and the effect of pressurization is achieved.
The joint of the pump cover and the impeller water inlet of the common double-stage pump is made of different materials, such as a stainless steel impeller aluminum alloy pump cover, a copper impeller cast iron pump cover and the like. The impeller of the double-stage water pump and the water inlet of the pump shell are also cast by metals of different materials. The phenomenon that the impeller and the pump cover or the pump shell are seized in high-speed rotation friction of the same material is prevented. The pump shaft of the double-stage water pump is long, and if the coaxiality is poor, friction occurs at the water inlet of the first-stage impeller and the pump cover. It is common for hard materials to wear away soft materials. If the impeller is made of stainless steel and the pump cover and the pump shell are made of aluminum alloy, a plurality of grooves are formed at the water inlet of the pump cover in an abrasion way over time, the sealing performance of the water pump is reduced, and the pressure is reduced along with the reduction.
The clearance between the pump seat of doublestage water pump and the export of second grade impeller is the partition design, and when the high pressure water delivery of water pump, the water that gets into in the water pump can not all be discharged from the delivery port of pump seat, will rotate in the clearance between pump seat and impeller and form the water resistance and influence the pressure of water pump. Wear of the impeller and the pump cover or the pump casing causes pressure drop and the existing pump base affects the pressure.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a multi-stage supercharging centrifugal water pump, which solves the problems of complex structure, low efficiency and the like of the traditional multi-stage supercharging water pump.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a multi-stage supercharging centrifugal water pump comprises a pump cover, a pump shell and a pump base. The bottom of the pump cover is fixedly connected with the top of the pump shell, and a first-stage impeller is arranged in a cavity formed by the pump cover and the pump shell to form a first-stage pressurizing structure. And a spacing ring is arranged between the primary impeller and the secondary impeller and used for limiting the distance between the primary impeller and the secondary impeller. The bottom of the pump shell is fixedly connected with the top of the pump base, and a second-stage impeller is arranged in a cavity formed by the pump shell and the pump base to form a second-stage pressurizing structure. The pump shaft penetrates through the pump seat to be fixedly connected with the first-stage impeller and the second-stage impeller, and the pump shaft is connected with the power source. And a mechanical sealing element is arranged at the position where the pump shaft penetrates through the pump seat to prevent water leakage. The water inlet is arranged at the upper end of the pump cover, and the water outlet is arranged on the side surface of the pump base.
The working principle of the multistage supercharging centrifugal water pump is as follows: the power drives the pump shaft to drive the first-stage impeller and the second-stage impeller to rotate, water is sucked in from the water inlet, is pressurized to the second-stage impeller through the first-stage impeller, and is centrifugally output from the water outlet through pressurization of the second-stage impeller.
Furthermore, the multistage supercharging centrifugal water pump also comprises a first-stage sealing ring, the first-stage sealing ring is embedded in the water inlet of the pump cover, and a first-stage impeller is inserted into the first-stage sealing ring to be tightly matched. The primary sealing ring is used for preventing backflow and pressure relief. The primary sealing ring is made of composite materials and has the characteristics of wear resistance, self lubrication, ageing resistance and the like. Because the composite material is made, the phenomenon of seizure of the first-stage impeller can not occur. This one-level sealing ring wearability is fabulous, and water pump pressurize ability reinforce can also play the supporting role to the one-level impeller, prevents that the pump shaft swing from causing the loss of pressure of water pump.
Furthermore, the multistage supercharging centrifugal water pump further comprises a second-stage sealing ring, the second-stage sealing ring is embedded in the lower portion of the pump shell, and a second-stage impeller is inserted into the second-stage sealing ring to be tightly matched with the second-stage sealing ring and used for preventing backflow and pressure relief.
Preferably, the gap between the pump seat and the outlet of the secondary impeller is designed in a volute shape from narrow to wide, and a stop block is arranged between the pump seat and the secondary impeller to ensure that water flowing out of the water outlet of the secondary impeller can be forcibly discharged from the water outlet of the pump seat. Prevent water from rotating in the pump seat to cause water resistance and influence the pressure of the water pump.
The utility model provides a multi-stage supercharging centrifugal water pump. The method has the following beneficial effects:
(1) the scheme removes guide vanes between the impellers of the traditional multistage booster water pump, reduces parts, has a simple structure, improves the assembly efficiency and reduces the production cost;
(2) the multistage supercharging centrifugal water pump is additionally provided with two-stage sealing rings, so that the phenomena of water pump underpressure and seizure caused by long-time abrasion of the impeller, the pump cover and the pump shell are avoided, and the problem of pressure loss caused by long-time swinging of the pump shaft is also avoided;
(3) the gap between the pump seat and the outlet of the secondary impeller is designed in a volute shape from narrow to wide, and a stop block is arranged between the pump seat and the impeller, so that the water outlet pressure is improved.
Drawings
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic perspective view of the present invention;
fig. 4 is a schematic perspective view of the pump mount of the present invention.
In the figure:
1. the pump comprises a pump base, 2 parts of a mechanical sealing element, 3 parts of a secondary impeller, 4 parts of a secondary sealing ring, 5 parts of a pump shell, 6 parts of a spacing ring, 7 parts of a primary impeller, 8 parts of a primary sealing ring, 9 parts of a pump cover, 10 parts of a water outlet, 11 parts of a water inlet, 12 parts of a pump shaft, 13 parts of a stop block.
Detailed Description
The technical scheme of the utility model is specifically explained by combining the accompanying drawings as follows:
example 1: a multi-stage supercharging centrifugal water pump comprises a pump cover 9, a pump shell 5 and a pump base 1. The bottom of the pump cover 9 is fixedly connected with the top of the pump shell 5, and a first-stage impeller 7 is arranged in a cavity formed by the pump cover 9 and the pump shell 5 to form a first-stage pressurizing structure. A spacer ring 6 is provided between the primary impeller 7 and the secondary impeller 3, the spacer ring 6 serving to define the distance between the primary impeller 7 and the secondary impeller 3. The bottom of pump case 5 and the top fixed connection of pump seat 1, the cavity that pump case 5 and pump seat 1 found is inside to be provided with second grade impeller 3, forms second grade pressure boost structure. The pump shaft 12 penetrates through the pump base 1 to be fixedly connected with the first-stage impeller 7 and the second-stage impeller 3, and the pump shaft 12 is connected with a power source. The position of the pump shaft 12 penetrating the pump base 1 is provided with a mechanical sealing element 2 to prevent water leakage. The water inlet 11 is arranged at the upper end of the pump cover 9, and the water outlet 10 is arranged at the side surface of the pump base 1.
The multistage supercharging centrifugal water pump further comprises a one-stage sealing ring 8, the one-stage sealing ring 8 is embedded in a water inlet 11 of the pump cover 9, and the one-stage impeller 7 is inserted into the one-stage sealing ring 8 and is tightly matched with the one-stage sealing ring. The primary sealing ring 8 is used for preventing backflow and pressure relief. The primary sealing ring 8 is made of composite materials and has the characteristics of wear resistance, self lubrication, ageing resistance and the like. Because the composite material is made, the phenomenon of seizure with the primary impeller 7 can not occur. This one-level sealing ring 8 wearability is fabulous, and water pump pressurize ability reinforce can also play the supporting role to one-level impeller 7, prevents that the pump shaft 12 from swinging to cause the loss of pressure of water pump.
The multistage supercharging centrifugal water pump further comprises a second-stage sealing ring 4, the second-stage sealing ring 4 is embedded in the lower portion of the pump shell 5, and the second-stage impeller 3 is inserted into the second-stage sealing ring 4 to be tightly matched and used for preventing backflow and pressure relief.
The working principle of the multistage supercharging centrifugal water pump is as follows: the power drives the pump shaft 12 to drive the first-stage impeller 7 and the second-stage impeller 3 to rotate, water is sucked from the water inlet 11, is pressurized to the second-stage impeller 3 through the first-stage impeller 7, and is then pressurized through the second-stage impeller 3 to centrifugally output high-pressure water flow from the water outlet 10.
Preferably, the gap between the pump base 1 and the secondary impeller 3 to the outlet is designed in a volute shape from narrow to wide, and a stop block is arranged between the pump base 1 and the secondary impeller 3 to ensure that water flowing from the secondary impeller 3 to the outlet can be forcibly discharged from the water outlet 10 of the pump base 1. Prevent water from rotating in the pump base 1 to cause water resistance and influence the pressure of the water pump.
The utility model provides a multi-stage supercharging centrifugal water pump. The method has the following beneficial effects:
(1) the scheme removes guide vanes between the impellers of the traditional multistage booster water pump, reduces parts, has a simple structure, improves the assembly efficiency and reduces the production cost;
(2) the multistage supercharging centrifugal water pump is additionally provided with two-stage sealing rings, so that the phenomena of water pump underpressure and seizure caused by long-time abrasion of the impeller, the pump cover and the pump shell are avoided, and the problem of pressure loss caused by long-time swinging of the pump shaft is also avoided;
(3) the gap between the pump seat and the outlet of the secondary impeller is designed in a volute shape from narrow to wide, and a stop block is arranged between the pump seat and the impeller, so that the water outlet pressure is improved.
Claims (5)
1. The utility model provides a multistage pressure boost centrifugal water pump, includes pump cover (9), pump case (5) and pump seat (1), its characterized in that: the bottom of the pump cover (9) is fixedly connected with the top of the pump shell (5), and a primary impeller (7) is arranged in a cavity formed by the pump cover (9) and the pump shell (5); a spacing ring (6) is arranged between the first-stage impeller (7) and the second-stage impeller (3), and the spacing ring (6) is used for limiting the distance between the first-stage impeller (7) and the second-stage impeller (3); the bottom of the pump shell (5) is fixedly connected with the top of the pump base (1), and a secondary impeller (3) is arranged in a cavity formed by the pump shell (5) and the pump base (1); a pump shaft (12) penetrates through the pump base (1) and is fixedly connected with the primary impeller (7) and the secondary impeller (3), and the pump shaft (12) is connected with a power source; a mechanical sealing element (2) is arranged at the position where the pump shaft (12) penetrates through the pump base (1); the water inlet (11) is arranged at the upper end of the pump cover (9), and the water outlet (10) is arranged on the side surface of the pump base (1).
2. The multistage booster centrifugal water pump according to claim 1, characterized in that: still include one-level sealing ring (8), inside water inlet (11) of pump cover (9) are inlayed in one-level sealing ring (8), and closely cooperate in one-level sealing ring (8) are inserted in one-level impeller (7).
3. The multistage booster centrifugal water pump according to claim 1, characterized in that: the impeller pump further comprises a second-stage sealing ring (4), the second-stage sealing ring (4) is embedded in the lower portion of the pump shell (5), and the second-stage impeller (3) is inserted into the second-stage sealing ring (4) to be tightly matched with the second-stage sealing ring.
4. The multistage booster centrifugal water pump according to claim 1, characterized in that: the gap between the outlet of the pump seat (1) and the outlet of the secondary impeller (3) is designed in a volute shape from narrow to wide, and a stop block (13) is arranged between the pump seat (1) and the secondary impeller (3).
5. The multistage booster centrifugal water pump according to claim 2, characterized in that: the primary sealing ring (8) is made of composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121707730.7U CN215409226U (en) | 2021-07-27 | 2021-07-27 | Multistage pressure boost centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121707730.7U CN215409226U (en) | 2021-07-27 | 2021-07-27 | Multistage pressure boost centrifugal water pump |
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| Publication Number | Publication Date |
|---|---|
| CN215409226U true CN215409226U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121707730.7U Active CN215409226U (en) | 2021-07-27 | 2021-07-27 | Multistage pressure boost centrifugal water pump |
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| CN (1) | CN215409226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234468A (en) * | 2022-08-10 | 2022-10-25 | 深圳丰颐节能环保技术有限公司 | Energy-efficient booster water pump |
-
2021
- 2021-07-27 CN CN202121707730.7U patent/CN215409226U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234468A (en) * | 2022-08-10 | 2022-10-25 | 深圳丰颐节能环保技术有限公司 | Energy-efficient booster water pump |
| CN115234468B (en) * | 2022-08-10 | 2023-12-26 | 深圳丰颐节能环保技术有限公司 | Pressurized water pump |
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