CN209781221U - Volute type strong self-priming sectional multistage centrifugal pump - Google Patents
Volute type strong self-priming sectional multistage centrifugal pump Download PDFInfo
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- CN209781221U CN209781221U CN201920349449.7U CN201920349449U CN209781221U CN 209781221 U CN209781221 U CN 209781221U CN 201920349449 U CN201920349449 U CN 201920349449U CN 209781221 U CN209781221 U CN 209781221U
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- impeller
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- priming
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Abstract
The utility model discloses a festival segmentation multistage centrifugal pump that spiral case type is from inhaling by force, which comprises a main shaft, first bearing subassembly, the first bearing body, first bearing subassembly, the section of intaking, the middle section, first order impeller, the first order stator, the second stage impeller, the second stage stator, the last stage impeller, the last stage stator, the last stage sealing ring, from inhaling the impeller, go out the water section, the axial balance cover, the axle sleeve, second bearing subassembly, second bearing body and second bearing subassembly, wherein from inhaling impeller mounting in going out the water section, from inhaling the installation last stage sealing ring between impeller and the last stage stator, the axial balance cover is installed in going out the water section, the axial balance cover with from inhaling the installation axle sleeve between the impeller. The utility model discloses not only can realize from inhaling the function, maintain simple, low cost moreover, have wider range of application.
Description
Technical Field
The utility model belongs to the technical field of fluid conveying equips, in particular to festival segmentation multistage centrifugal pump field, concretely relates to festival segmentation multistage centrifugal pump that spiral case type is strong from inhaling.
Background
At present, current festival segmentation multistage centrifugal pump mainly by the axle, bearing part, the section of intaking, the middle section, the stator, go out the water section, the last stage stator, the impeller, tail-hood etc. constitute, festival segmentation multistage centrifugal pump of this kind of structure self does not possess the function of evacuation, when festival segmentation multistage centrifugal pump installs above the liquid level, need join in marriage a vacuum pump in addition with supplementary festival segmentation multistage centrifugal pump, use the vacuum pump evacuation diversion promptly earlier and get into multistage centrifugal pump cavity in, treat to be full of water in the multistage centrifugal pump cavity, start festival segmentation multistage centrifugal pump, and the stop motion vacuum pump. In addition, in the installation and arrangement process of the sectional type multistage centrifugal pump, the fixing mode and the installation position of the vacuum pump need to be considered at the same time, the occupied space is large, and the operation is inconvenient.
In order to solve the problem that the sectional type multistage centrifugal pump does not have a self-suction function, the self-suction centrifugal pump technology with the self-suction function is applied to the technical field of sectional type multistage centrifugal pumps and becomes a development trend. The self-priming centrifugal pump starts the pump under the condition that the suction pipe is not required to be filled with water (but the pump body is required to have enough water), automatically exhausts the gas in the suction pipe, and enters normal operation after short-time operation. The pump must be filled with enough water before the initial start, and then the pump is started again by the water remained in the pump body to enter the normal operation when the pump is started later.
The water outlet section of the sectional multistage self-priming pump (application number: CN200520107617. X) is provided with a large-volume gas-liquid separation chamber, the upper part of the gas-liquid separation chamber is provided with a water outlet, the lower part of the final guide vane is provided with a return hole, when the pump is started, water and air remained in the pump are sucked into the gas-liquid separation chamber together, and the separated air is discharged from the water outlet at the upper part of the gas-liquid separation chamber due to enough space, and the separated liquid is stored in the gas-liquid separation chamber, thereby realizing the self-priming function. The device belongs to the external mixing type self-priming pump, and the self-priming time is longer and influences the efficiency of the multistage centrifugal pump. A novel structure of a self-suction horizontal multistage pump (application number: CN 201110373531.1) is characterized in that a gas-liquid separation chamber is arranged at the middle section of the first stage of the device, the gas-liquid separation chamber is connected with a discharge section through a vent pipe, air in the discharge section is prevented from entering the gas-liquid separation chamber through a one-way valve, and a water outlet chamber of the discharge section is communicated with a water suction chamber of a suction section through a return pipe, so that the self-suction function of the horizontal multistage centrifugal pump is realized. A novel strong self-priming horizontal multi-stage pump (application number: CN 201110158430.2) realizes the self-priming function of the horizontal multi-stage pump through a vacuum distributor and a vacuum equipartition device, and the structure of the horizontal multi-stage pump is complicated and the overall stability is reduced due to the addition of other auxiliary equipment.
in view of this, in view of the current technical situation of the conventional sectional type multistage centrifugal pump, a sectional type multistage centrifugal pump device is provided which satisfies the performance requirements of the pump without increasing the structural complexity on the premise of realizing the self-priming function of the sectional type multistage centrifugal pump.
disclosure of Invention
An object of the utility model is to provide a festival segmentation multistage centrifugal pump that spiral case type is strong from inhaling to spiral case type is strong from inhaling centrifugal impeller and replacing the last impeller, realizes festival segmentation multistage centrifugal pump from inhaling the function.
In order to achieve the purpose, the technical scheme of the invention is as follows:
A volute type strong self-priming sectional multistage centrifugal pump comprises a main shaft, a first bearing assembly, a first bearing body, a first seal assembly, a water inlet section, a first-stage impeller, a first-stage guide vane, a second-stage impeller, a second-stage guide vane, a last-stage impeller, a last-stage guide vane, a last-stage sealing ring, a self-priming impeller, a water outlet section, an axial balance sleeve, a shaft sleeve, a second seal assembly, a second bearing body and a second bearing assembly, wherein the first bearing assembly and the second bearing assembly are respectively arranged in the first bearing body and the second bearing body, the first bearing body and the second bearing body are respectively arranged at two ends of the main shaft, the water inlet section is fixed on the first bearing body in a bolt connection mode, the first-stage impeller, the first-stage guide vane, the second-stage impeller, the second-stage guide vane, the last-stage impeller, the last-stage, a last-stage sealing ring is arranged between the self-suction impeller and a last-stage guide vane, an axial balancing sleeve is arranged in the water outlet section, a shaft sleeve is arranged between the axial balancing sleeve and the self-suction impeller, a second shaft sealing component is arranged on the main shaft and is positioned on the rear end face of the water outlet section, and a second bearing body is fixed on the water outlet section in a bolt connection mode.
The water outlet section is internally provided with a volute type gas-liquid separation chamber, the top of the volute type gas-liquid separation chamber is provided with a backflow hole and is communicated with the water outlet of the final-stage impeller, and the bottom of the volute type gas-liquid separation chamber is provided with a liquid storage cavity.
The self-suction impeller is arranged in the volute type gas-liquid separation chamber.
The final-stage sealing ring is in a hollow cylindrical shape, and the diameter of the inner circle of the final-stage sealing ring is equal to the diameter of the inlet of the self-suction impeller.
The utility model has the advantages as follows: when the volute type strong self-priming sectional type multistage centrifugal pump is started, water reserved in the inner cavity of the water outlet section can play a role of water filling and guiding under the action of the self-priming impeller, and air in the water inlet pipe can be continuously pumped out, so that the trouble that the sectional type multistage centrifugal pump in the prior art needs to be vacuumized or guided with water when being started every time is avoided. In addition, on the basis of not increasing other auxiliary equipment (such as a one-way valve, a check valve and a vacuum pump), the self-priming device not only can realize the self-priming function, but also has simple maintenance, low cost and wider application range.
Drawings
Fig. 1 is a front view of a volute type strong self-priming sectional multistage centrifugal pump of the present invention;
Fig. 2 is a left side view of the volute type strong self-priming sectional multistage centrifugal pump of the present invention;
Labeled as: 1: a shaft; 2: a first bearing assembly; 3: a first bearing body; 4: a first shaft seal assembly; 5: a water inlet section; 6: a middle section; 7: a first stage impeller; 8: a first stage guide vane; 9: a second stage impeller; 10: a second stage guide vane; 11: a last stage impeller; 12: a last stage guide vane; 13: a final stage seal ring; 14: a self-priming impeller; 15: a water outlet section; 16: an axial balancing sleeve; 17: a shaft sleeve; 18: a second shaft seal assembly; 19: a second bearing body; 20: a second bearing assembly; 21: a volute-type gas-liquid separation chamber; 22: a return orifice; 23: a liquid storage chamber.
Detailed Description
An embodiment of the present invention is further described below with reference to fig. 1 and 2:
the volute type strong self-priming sectional type multistage centrifugal pump comprises a main shaft 1, a first bearing assembly 2, a first bearing body 3, a first sealing assembly 4, a water inlet section 5, a middle section 6, a first-stage impeller 7, a first-stage guide vane 8, a second-stage impeller 9, a second-stage guide vane 10, a last-stage impeller 11, a last-stage guide vane 12, a last-stage sealing ring 13, a self-priming impeller 14, a water outlet section 15, an axial balancing sleeve 16, a shaft sleeve 17, a second sealing assembly 18, a second bearing body 19 and a second bearing assembly 20, wherein the first bearing assembly 2 and the second bearing assembly 20 are respectively installed in the first bearing body 3 and the second bearing body 19, the first bearing body 3 and the second bearing body 19 are respectively installed at two ends of the main shaft 1, the water inlet section 5 is fixed on the first bearing body 3 in a bolt connection mode, the first-stage impeller 7, the first-stage guide vane 8, the second stage guide vane 10, the last stage impeller 11, the last stage guide vane 12 and the middle section 6 are sequentially arranged on the main shaft 1, the self-suction impeller 14 is arranged in the water outlet section 15, the last stage sealing ring 13 is arranged between the self-suction impeller 14 and the last stage guide vane 12, the axial balancing sleeve 16 is arranged in the water outlet section 15, the shaft sleeve 17 is arranged between the axial balancing sleeve 16 and the self-suction impeller 14, the second sealing component 18 is arranged on the main shaft 1 and is positioned at the rear end face of the water outlet section 15, and the second bearing body 19 is fixed on the water outlet section 15 in a bolt connection mode.
A volute-shaped gas-liquid separation chamber 21 is arranged in the water outlet section 15, a backflow hole 22 is formed in the top of the volute-shaped gas-liquid separation chamber 21 and communicated with a water outlet of the last-stage impeller 11, and a liquid storage cavity 23 is formed in the bottom of the volute-shaped gas-liquid separation chamber 21.
The self-priming impeller 14 is installed in a volute type gas-liquid separation chamber 21.
The final-stage sealing ring 13 is in a hollow cylindrical shape, and the diameter of the inner circle of the final-stage sealing ring 13 is equal to the diameter of the inlet of the self-suction impeller 14.
Claims (4)
1. A volute type strong self-priming sectional multistage centrifugal pump comprises a main shaft (1), a first bearing assembly (2), a first bearing body (3), a first seal assembly (4), a water inlet section (5), a middle section (6), a first-stage impeller (7), a first-stage guide vane (8), a second-stage impeller (9), a second-stage guide vane (10), a last-stage impeller (11), a last-stage guide vane (12), a last-stage seal ring (13), a self-priming impeller (14), a water outlet section (15), an axial balance sleeve (16), a shaft sleeve (17), a second seal assembly (18), a second bearing body (19) and a second bearing assembly (20), wherein the first bearing assembly (2) and the second bearing assembly (20) are respectively installed in the first bearing body (3) and the second bearing body (19), the first bearing body (3) and the second bearing body (19) are respectively installed at two ends of the main shaft (1), intake section (5) through bolted connection's mode be fixed in on first bearing body (3), first order impeller (7), first order stator (8), second level impeller (9), second level stator (10), last stage impeller (11), last stage stator (12) and middle section (6) are installed in proper order on main shaft (1), second shaft seal subassembly (18) are installed on main shaft (1), and be located the rear end face department of play water section (15), on second bearing body (19) are fixed in play water section (15) through bolted connection's mode, its characterized in that: the self-suction impeller (14) is arranged in the water outlet section (15), the last-stage sealing ring (13) is arranged between the self-suction impeller (14) and the last-stage guide vane (12), the axial balancing sleeve (16) is arranged in the water outlet section (15), and the shaft sleeve (17) is arranged between the axial balancing sleeve (16) and the self-suction impeller (14).
2. The volute type strong self-priming segmented multistage centrifugal pump according to claim 1, wherein: the water outlet section (15) is internally provided with a volute type gas-liquid separation chamber (21), the top of the volute type gas-liquid separation chamber (21) is provided with a backflow hole (22) and communicated with the water outlet of the final-stage impeller (11), and the bottom of the volute type gas-liquid separation chamber (21) is provided with a liquid storage cavity (23).
3. The volute type strong self-priming segmented multistage centrifugal pump according to claim 1, wherein: the self-suction impeller (14) is arranged in a volute type gas-liquid separation chamber (21).
4. The volute type strong self-priming segmented multistage centrifugal pump according to claim 1, wherein: the final-stage sealing ring (13) is in a hollow cylindrical shape, and the diameter of the inner circle of the final-stage sealing ring (13) is equal to the diameter of the inlet of the self-suction impeller (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920349449.7U CN209781221U (en) | 2019-03-19 | 2019-03-19 | Volute type strong self-priming sectional multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920349449.7U CN209781221U (en) | 2019-03-19 | 2019-03-19 | Volute type strong self-priming sectional multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781221U true CN209781221U (en) | 2019-12-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920349449.7U Expired - Fee Related CN209781221U (en) | 2019-03-19 | 2019-03-19 | Volute type strong self-priming sectional multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594451A (en) * | 2020-05-29 | 2020-08-28 | 广东凌霄泵业股份有限公司 | Horizontal self-priming pump |
-
2019
- 2019-03-19 CN CN201920349449.7U patent/CN209781221U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594451A (en) * | 2020-05-29 | 2020-08-28 | 广东凌霄泵业股份有限公司 | Horizontal self-priming pump |
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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: 20191213 Termination date: 20210319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |