Novel quick self-priming efficient vertical pipeline self-priming pump
Technical Field
The utility model relates to a pump valve equipment technical field, concretely relates to novel quick from inhaling high-efficient vertical pipeline self priming pump.
Background
The basic structure of the vertical pipeline centrifugal pump is composed of six parts, namely an impeller, a pump body, a pump shaft, a motor, a pump cover and a sealing ring.
Before the vertical pipeline centrifugal pump works, a pump body and a water inlet pipe are required to be filled with water to form a vacuum state, when an impeller rotates rapidly, blades promote the water to rotate rapidly, the rotating water flies away from the impeller under the action of centrifugal force, and after the water in the pump is thrown out, the central part of the impeller forms a vacuum area.
The common self-priming pump generally adopts a circular ring-shaped extrusion chamber, the extrusion chamber and a volume cavity are cast into a whole, self-priming is realized through gas-liquid mixing, and hydraulic loss is large in the operation process, so that the efficiency is low, the operation noise is large, and the occupied space is large; and part of users also use a mode of adding a drainage irrigation and a bottom valve to the suction port of the pump, so that the pump causes great hydraulic loss during working and has high investment cost.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims at providing a novel quick from inhaling high-efficient vertical pipeline self priming pump.
In order to realize the technical purpose, the utility model discloses a scheme is:
as preferred, a novel quick self-priming high-efficient vertical pipeline self-priming pump, including the pump shaft and the pump body, the pump body right-hand member have suspension, its characterized in that through screwed connection: the pump comprises a pump shaft, a pump cover, a middle spacer sleeve, a seal gland, a shaft sleeve, a pump cover, a machine seal and a seal gland, wherein the pump cover is arranged at the lower end of the pump shaft; the auxiliary impeller is provided with an L-shaped extension boss close to the pump shaft, the extension boss is inserted into the annular groove corresponding to the auxiliary impeller, and a gap exists between the extension boss and the auxiliary impeller.
Preferably, the upper end of the middle spacer sleeve is provided with an air and water outlet, and the lower end of the middle spacer sleeve is provided with a pump inlet section air inlet.
Preferably, the outer ring of the sealing gland is provided with a machine seal washing water outlet.
Preferably, the auxiliary impeller compresses air in the compression chamber by rotating to form a water ring.
Preferably, a mechanical seal is arranged between the intermediate spacer sleeve and the sealing gland.
The beneficial effects of the utility model, the cooling water is sealed to the expert machine earlier, and the pump is opened to the back, can realize inhaling certainly in 10 seconds, and pump efficiency is almost the same with the horizontal centrifugal pump, increases this from inhaling structure consumed power limitedly, does not exceed 3KW at most to large-scale self priming pump, and small-size self priming pump consumed power is lower, and this structure utilizes the rotation of semi-open auxiliary impeller to seal a certain amount of water, stores a certain amount of water and realizes water ring compressed air, breathes in the exhaust, improves the gas port above, and the effect of breathing in is better.
Compare the vertical self priming pump of traditional WFB type, this structure need not the pump priming, and structure area is little, and it is faster to inhale the time certainly, and pump efficiency is higher.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, the embodiment of the present invention is
The utility model provides a novel quick self-priming high-efficient vertical pipeline self priming pump, includes pump shaft 9 and the pump body 1, 1 right-hand member of the pump body have suspension 11, its characterized in that through the screw connection: the pump is characterized in that an impeller 2 is arranged at the lower end of a pump shaft 9, a baffle 3 is arranged at the upper end of the impeller 2, a pump cover 7 is fixed at the upper end of the baffle 3, an auxiliary impeller 4 is arranged between the pump cover 7 and the baffle 3 to form a compression cavity 8, an intermediate spacer sleeve 6 is fixed at the upper end of the pump cover 7 through screws, a sealing gland 10 is connected at the right end of the intermediate spacer sleeve 6 through screws, a shaft sleeve 5 is arranged on the outer ring of the pump shaft 9, the auxiliary impeller 4, the pump cover 7, the intermediate spacer sleeve 6, a mechanical seal 12 and the sealing gland 10 are contacted with the outer ring of the shaft sleeve 5, and an air inlet 1.1 is arranged on one side; an L-shaped extension boss 3.1 is arranged at the position, close to the pump shaft 9, of the auxiliary impeller 4, the extension boss 3.1 is inserted into an annular groove corresponding to the auxiliary impeller 4, and a gap exists between the extension boss 3.1 and the auxiliary impeller 4.
The upper end of the middle spacer bush 6 is provided with an air and water outlet 6.3, and the lower end of the middle spacer bush 6 is provided with a pump inlet section air inlet 6.1.
The outer ring of the sealing gland 10 is provided with a machine seal flushing water outlet 6.2.
The auxiliary impeller 4 compresses air in the compression cavity 8 by rotating to form a water ring.
A mechanical seal 12 is arranged between the middle spacer bush 6 and the sealing gland 10.
In the specific implementation:
the cooling water is firstly cooled by the machine seal 12, then the pump is started, the auxiliary impeller 4 rotates, negative pressure is formed at the inlet of the auxiliary impeller (the air inlet 6.1 at the inlet section of the pump is arranged at the upper end), air at the inlet of the pump body 1 is sucked from the middle spacer sleeve 6, and machine seal flushing water flows out from the sealing gland 10, the machine seal flushing water forms a water ring in the cavity of the pump cover 7 due to the rotation of the auxiliary impeller 4 to compress the air in the compression cavity 8, the compressed air is discharged into the middle spacer sleeve 6 from the high-pressure end outlet of the cavity of the pump cover 7 and then is discharged with air and water through the air and water outlet 6.3 of the middle spacer sleeve 6 until the air in the inlet pipeline of the pump and the air in the pump body 1 are completely filled with liquid, the self.
The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.