CN203335416U - Fluid sealing self-priming centrifugal pump - Google Patents
Fluid sealing self-priming centrifugal pump Download PDFInfo
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- CN203335416U CN203335416U CN2013201657257U CN201320165725U CN203335416U CN 203335416 U CN203335416 U CN 203335416U CN 2013201657257 U CN2013201657257 U CN 2013201657257U CN 201320165725 U CN201320165725 U CN 201320165725U CN 203335416 U CN203335416 U CN 203335416U
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- impeller
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Abstract
The utility model provides a fluid sealing self-priming centrifugal pump which comprises a pump body, a pump cover, a pump shaft, a pump shaft bearing support, an impeller, an auxiliary impeller and a separation plate. The impeller and the auxiliary impeller are arranged on the pump shaft of a work pump cavity and a pressure balancing cavity respectively, and the work pump cavity and the pressure balancing cavity are separated by the separation plate. When the pump shaft is in operation, fluid pressure generated by the auxiliary impeller is not smaller than fluid pressure generated by the impeller and acts on the fluid pressure generated by the impeller in a reversed mode. A shaft seal is arranged between the auxiliary impeller and the pump shaft, the inlet of the pump cavity is communicated with a vacuum self-absorption cavity, and the vacuum self-absorption cavity is arranged not lower than the axis of the pump shaft. The fluid sealing self-priming centrifugal pump is simple in structure, wide in application range, stable and reliable in work, and capable of being widely applied to work media which are high in purity, and have grains, crystals and easily being gas-etched.
Description
Technical field
The utility model relates to the self-suction type centrifugal pump.
Background technique
Self-priming pump adopts the jet nozzle structure mostly, or the work of centrifugal pump and vacuum pump double pump combination self-priming, inhales journey generally 4 meters left and right, and their complex structure, working stability are poor.The work of two pumps assembly self-absorption function, be difficult to carry out on request assembly in practice, and duplex is done the motor power consumption greatly.Comparatively difficult when Under Water Pumps and submersible pump maintenance, and occur that the probability of maintenance is also higher.At present, most centrifugal pump products also do not have self-absorption function, with regard to the application of market, using the most general is still centrifugal pump, so the improvement centrifugal pump structure, make it have self-absorption function, and make to change the state of the art that shaft seal mainly adopts packing seal or mechanical seal, providing a kind of and can also stablize, be applied to reliably containing the self-priming pump in the complex work media environment of particle, crystalline and easily cavitation erosion, is technical problem urgently to be resolved hurrily.
Summary of the invention
It is a kind of simple in structure and also adapt to and work in containing particle, crystalline and the easy Fluid Sealing self priming centrifugal pump of the complex work medium such as cavitation erosion that goal of the invention of the present utility model is to provide.The Fluid Sealing self priming centrifugal pump technological scheme that the utility model provides, its main technical content is: a kind of Fluid Sealing self-priming centrifugal pump, comprise the pump housing, pump cover, pump shaft, the pump shaft bearing bracket, impeller, sub-propeller and dividing plate, described dividing plate forms pump housing pump chamber with pump cover is separated into work pump chamber and the pressure balance chamber communicated by pump shaft axis hole gap, impeller and sub-propeller are arranged on respectively on the pump shaft of work pump chamber and pressure balance chamber, and during pump shaft work, the hydrodynamic pressure that the hydrodynamic pressure that sub-propeller produces is not less than and acting in opposition produces in impeller, be provided with shaft seal between sub-propeller and pump shaft, the connection of pump chamber entrance is provided with vacuum self-priming chamber, arranging of vacuum self-priming chamber highly is not less than the pump shaft axis, described vacuum self-priming chamber is the cylindrical space chamber, its volume is at least 1.2 times of external pipeline total measurement (volume).
In above-mentioned overall technical architecture, shaft seal between sub-propeller and pump shaft comprises the Seal Kit in the shaft seal seat that is installed on the pump cover back side on the axle sleeve that is fixed in pump shaft and axle sleeve, the rubber shaft seal between isolating ring, isolating ring and sealing seat in the middle of described Seal Kit comprises and the PTFE shaft seal between isolating ring and pump cover.
The main control loop coordinated with technique scheme, this main control loop comprises that fuse, master relay, low liquid level position limit switch, high liquid level position limit switch and motor heat relay are in series, and the first normally opened contact of master relay is parallel on high liquid level position limit switch.
The disclosed Fluid Sealing self-priming centrifugal pump of the utility model technological scheme, Structural Tectonics is simple, applied widely, working stability, reliable, be widely used in high purity, containing particle, crystallization and the easy working medium of the character such as cavitation erosion, have and inhale the technological merit that journey is high, be easy to maintenance, it inhales Cheng Tongchang can reach 6 meters.
The accompanying drawing explanation
Fig. 1 is general assembly structural drawing of the present utility model.
Fig. 2 is the sectional structure chart of shaft seal.
Fig. 3 is the electrical schematic diagram of main control loop.
Embodiment
As shown in Figure 1, Fluid Sealing self-priming centrifugal pump of the present utility model, comprise the pump housing 5, pump cover 4, pump shaft 10, pump shaft bearing bracket 9, impeller 6, sub-propeller 7 and dividing plate 11, described dividing plate 11 forms the pump housing 5 pump chamber with pump cover 4 is separated into work pump chamber and the pressure balance chamber communicated by pump shaft axis hole gap, 6 impellers and sub-propeller 7 are arranged on respectively on the pump shaft 10 of work pump chamber and pressure balance chamber, and during pump shaft 10 work, the hydrodynamic pressure that the hydrodynamic pressure that sub-propeller 7 produces is not less than and acting in opposition produces in impeller 6, during like this with the normal operation of assurance pump, the counter fluid pressure of sub-propeller 7 plays fabulous sealing effect.Be provided with shaft seal 8 between sub-propeller 7 and pump shaft 10, its structure as shown in Figure 2, shaft seal 8 between sub-propeller 7 and pump shaft 10 comprises the Seal Kit in the axle sleeve 80 that is fixed in pump shaft 10 and the shaft seal seat 81 that is installed on pump cover 4 back sides, rubber shaft seal 83 between isolation 82, isolating ring 82 and the sealing seat 81 of described Seal Kit in the middle of comprising and the PTFE shaft seal 84 between isolating ring 82 and pump cover 4, especially during pump startup with the seal action of termination of pumping transition period.Vacuum self-priming chamber 3 is communicated with pump chamber entrance 1 and at least on pump shaft 10 axis, described vacuum self-priming chamber 3 is the cylindrical space chamber, and its volume is at least 1.2 times of external pipeline total measurement (volume).Before startup work, in vacuum self-priming chamber 3, be full of medium, pump startup work simultaneously, vacuum self-priming chamber forms vacuum space very soon, and the externally connected pipe medium is sucked, and is the self-priming working state, this process at most needed for tens seconds, and its self-priming speed is fast, operate steadily.
This Fluid Sealing self-priming centrifugal pump is equipped with main control loop, this main control loop comprises that fuse FU1, FU2, master relay KM, low liquid level position limit switch KJ2, high liquid level position limit switch KJ1 and motor heat relay K H are in series, the first normally opened contact KM1 of master relay KM is parallel to high liquid level position limit switch KJ1, the second normally opened contact KM2 of master relay KM and display lamp HR pump work display circuit in series.When float does not reach high liquid level by low liquid level position limit switch rising gradually with liquid level, low liquid level position limit switch KJ2 conducting, high liquid level position limit switch KJ1 are still for disconnecting, when liquid level continues to raise, and while meeting and exceeding high liquid level, high liquid level position limit switch KJ1 conducting immediately, master relay KM conducting, its each normally opened contact KM1, KM12, KM3 closure, display lamp HR is bright, pump motor starts self-priming work.In this main control loop, manual branch road and described high liquid level position limit switch are connected to the outer contact 15 of low liquid level position limit switch KJ2, route stop button SBS is propped up in described manual control and start button SB is in series, it is upper that the 4th normally opened contact KM4 of master relay KM is parallel to start button SB, and the outer contact 16 of high liquid level position limit switch KJ1 and the outer contact 13 of manual branch road are connected on the two selector switch contacts of either-or switch K.
Claims (4)
1. a Fluid Sealing self-priming centrifugal pump, comprise the pump housing, pump cover, pump shaft, the pump shaft bearing bracket, impeller, sub-propeller and dividing plate, described dividing plate forms pump housing pump chamber with pump cover is separated into work pump chamber and the pressure balance chamber communicated by pump shaft axis hole gap, impeller and sub-propeller are arranged on respectively on the pump shaft of work pump chamber and pressure balance chamber, and during pump shaft work, the hydrodynamic pressure that the hydrodynamic pressure that sub-propeller produces is not less than and acting in opposition produces in impeller, be provided with shaft seal between sub-propeller and pump shaft, it is characterized in that the connection of pump chamber entrance is provided with vacuum self-priming chamber, arranging of vacuum self-priming chamber highly is not less than the pump shaft axis, described vacuum self-priming chamber is the cylindrical space chamber, its volume is at least 1.2 times of external pipeline total measurement (volume).
2. Fluid Sealing self-priming centrifugal pump according to claim 1, it is characterized in that shaft seal between sub-propeller and pump shaft comprises the Seal Kit in the shaft seal seat that is installed on the pump cover back side on the axle sleeve that is fixed in pump shaft and axle sleeve, the rubber shaft seal between isolating ring, isolating ring and sealing seat in the middle of described Seal Kit comprises and the PTFE shaft seal between isolating ring and pump cover.
3. Fluid Sealing self-priming centrifugal pump according to claim 1, it is characterized in that also being provided with main control loop, this main control loop comprises that fuse, master relay, low liquid level position limit switch, high liquid level position limit switch and motor heat relay are in series, and the first normally opened contact of master relay is parallel on high liquid level position limit switch.
4. Fluid Sealing self-priming centrifugal pump according to claim 3, it is characterized in that the outer contact that is connected to low liquid level position limit switch comprises high liquid level position limit switch and manual branch road, described manual control prop up the route stop button and start button in series, the 4th normally opened contact of master relay is parallel on start button, and the outer contact of high liquid level position limit switch and the outer contact of manual branch road are connected on two selector switch contacts of either-or switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201657257U CN203335416U (en) | 2013-04-03 | 2013-04-03 | Fluid sealing self-priming centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201657257U CN203335416U (en) | 2013-04-03 | 2013-04-03 | Fluid sealing self-priming centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335416U true CN203335416U (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201657257U Expired - Fee Related CN203335416U (en) | 2013-04-03 | 2013-04-03 | Fluid sealing self-priming centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179691A (en) * | 2014-09-01 | 2014-12-03 | 东阿县万路机械厂 | Automatic water diverting device of water pump |
-
2013
- 2013-04-03 CN CN2013201657257U patent/CN203335416U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179691A (en) * | 2014-09-01 | 2014-12-03 | 东阿县万路机械厂 | Automatic water diverting device of water pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171220 Address after: 118000 Liaoning Dandong hi tech Industrial Development Zone A-106 Patentee after: Dandong Sheng Hui petrochemical equipment Co., Ltd Address before: 163714 Xinghua village 2 District, Longfeng District, Daqing, Heilongjiang Province, No. 214 Co-patentee before: Liu Mengchun Patentee before: Yang Xingmin |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20210403 |