CN2554407Y

CN2554407Y - Pump rotor

Info

Publication number: CN2554407Y
Application number: CN 02238443
Authority: CN
Inventors: 苏闪
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-07
Filing date: 2002-06-07
Publication date: 2003-06-04
Anticipated expiration: 2012-06-07

Abstract

The utility model relates to a novel pump rotor, belonging to an engineering mechanical component. The utility model can match a vacuumizing device arranged on the outside of the pump body so as to realize self-absorbing and pumping to liquid material pastes, including big-granule material pastes, while carrying out a revolving work in a pump chamber. The utility model comprises an impeller and a rotary shaft, and a channel is arranged in the rotary shaft, and an air-guide channel is additionally communicated between an overflow groove of the impeller and the channel of the rotary shaft, and an inlet of the air-guiding channel communicated with the overflow groove is in the position far away from an axes of the rotary shaft. The utility model cannot run with no-load caused by a flow lack. And the utility model can eliminate air-corrosion automatically and is suitable for pumping and transferring mud, sand pastes, concrete pastes and raw chemical pastes.

Description

The new pump rotor

Technical field

The utility model belongs to a kind of engineering machinery member, especially relates to a kind of new pump rotor.

Background technique

Present pump rotor, constitute by impeller and rotating shaft, its rotating shaft is real core body, its impeller has enclosed impeller, and unshrouded impeller also has half-opened impeller, these impellers itself do not have suction capacity when idle running, prior full of liquid around the suction line that links to each other of the inlet of transference pump and the impeller just can turn round work and pumps slip, and can dally because of underfed; Also be easy to take place cavitation phenomenon, at this moment, must shut down, and repeat aforesaid operations, this not only operates inconvenience; And run into thick slurry, mortar or forbid mixed chemical industry magma of stirring, powerless especially.

Summary of the invention

The purpose of this utility model is to overcome above deficiency, a kind of new pump rotor has been proposed, it can be rotated in pump chamber in the work, the vacuum pumping device outer with being arranged on the pump housing matches, realize the liquid slip, comprise the self-priming and the pumping that contain oarse-grained slip, simultaneously can not eliminate cavitation phenomenon automatically because of underfed dallies yet.

The technical solution of the utility model is: a kind of new pump rotor, comprise impeller and rotating shaft, passage is arranged in rotating shaft, other has air guide channel to be communicated with between the passage of at least one the overcurrent conduit of impeller and rotating shaft, and the import of the air guide channel that communicates with the overcurrent conduit is positioned at the position away from shaft axis.

Impeller is the enclosed impeller that is formed by front shroud, back shroud, blade and wheel hub.

Impeller is half-opened impeller also.

Impeller is unshrouded impeller also.

The passage of rotating shaft includes the air outlet of the suction port and the rotating shaft passage of rotating shaft passage, the outlet fixing seal UNICOM of the suction port of rotating shaft passage and air guide channel, and the air outlet of rotating shaft passage is positioned on the sidewall of passage.

In inlet corresponding to air guide channel, flap can be set, flap can be to the direction swing away from shaft axis.

Compare with existing pump rotor, new pump rotor described in the utility model, in pump chamber behind the rotary work, need only close the exhaust port of pump, afterwards, be enabled in pump outer and intakeport and the vacuum pumping device that the air outlet of the rotating shaft passage of new pump rotor communicates, can realize just that the self-priming of slip in pump chamber elimination is dallied.After this, slip also can be from exhaust port force feed outside pump of opening.In addition, owing to always be in the certain negative pressure state in the air guide channel, when in the overcurrent conduit cavitation phenomenon taking place, the gas in cavitation erosion district just can be sucked in the air guide channel, makes the very fast disappearance of cavitation phenomenon.

Description of drawings

Below, each accompanying drawing is made schematic illustration:

Fig. 1 is the utility model first embodiment's a structural representation, and flap is represented with side view;

Fig. 2 is that the A-A of Fig. 1 is to view

Fig. 3 is the structural representation of present pump rotor;

Fig. 4 is that the B-B of Fig. 1 is to view;

Fig. 5 is the utility model second embodiment's a structural representation, and blade is represented with side view;

Fig. 6 is that the C-C of Fig. 5 is to view.

More than label list among each figure be shown:

1, impeller, 2, front shroud, 3, the import of air guide channel,

4, the suction port of rotating shaft passage, 5, passage, 6, shaft axis,

7, the air outlet of rotating shaft passage, 8, rotating shaft, 9, wheel hub,

10, back shroud, 11, air guide channel, 12, blade,

13, overcurrent conduit, 14, flap.

In above-mentioned each accompanying drawing, function parts identical with title are corresponding to identical label.

Embodiment

Following elder generation is described in detail the utility model first embodiment's new pump rotor with regard to Fig. 1.This new pump rotor comprises impeller 1 and rotating shaft 8, and passage 5 is arranged in rotating shaft.In the present embodiment, impeller 1 is the enclosed impeller that is formed by front shroud 2, back shroud 10, blade 12 and wheel hub 9 combinations, and the quantity of blade has six among the figure, and the zone between each blade forms overcurrent conduit 13, in the present embodiment, the overcurrent number of channels of formation is six.In the passage 5 of rotating shaft, include the air outlet 7 of the suction port 4 and the rotating shaft passage of rotating shaft passage, in the present embodiment, the number of the air outlet of the suction port of rotating shaft passage and rotating shaft passage is two.Other has air guide channel 11 to be communicated with between the suction port 4 of the overcurrent conduit 13 of impeller and rotating shaft passage, in the present embodiment, has two air guide channels all to be arranged on the inside of back shroud 10, and to be connected with two overcurrent conduits respectively.The import 3 of the air guide channel that communicates with overcurrent conduit 13 is positioned at the position away from shaft axis 6.The suction port 4 of rotating shaft passage and the outlet fixing seal UNICOM of air guide channel 11, the air outlet 7 of rotating shaft passage is positioned on the sidewall of passage.Import 3 places corresponding to air guide channel also are provided with flap 14, and flap can be to the direction swing away from shaft axis 6.The flap structure is a prior art, and this does not repeat.

The described new pump rotor of the utility model first embodiment, in use, must be arranged on rotary work in the pump chamber, then, need only close the exhaust port of pump, afterwards, be enabled in outside the pump, and the vacuum pumping device that intakeport communicates with the air outlet 7 of the rotating shaft passage of new pump rotor, air pressure in the pump chamber is reduced, and make the suction line that links to each other with the inlet of pump constantly from the material pond, aspirate slip, and flow in the overcurrent conduit 13 of impeller, afterwards, slip just obtains centrifugation accelerates, to import 3 diffluences of air guide channel, the liquid constituent in the slip, because the centrifugal force that obtains is bigger, and directly throw away the outer rim of impeller 1; Gas componant in the slip, owing to the centrifugal force vacuum force less, that be not enough to resist in the air guide channel 11 that obtains is sucked into air guide channel 11, discharge from vacuum pumping device again at last.Said process constantly repeats, and the slip in the pump chamber is cumulative, just can no longer dally, and realizes the self-priming of slip in pump chamber.After this, slip also can be from exhaust port force feed outside pump of the pump opened.In addition, owing to always be in the certain negative pressure state in the air guide channel 11, when in overcurrent conduit 13 cavitation phenomenon taking place, the gas in cavitation erosion district just can be sucked in the air guide channel 11, makes the very fast disappearance of cavitation phenomenon.When new pump rotor rotary work, flap 14 centrifugalizations always are in the opening state away from shaft axis 6, and the slip centrifugalization of liquid also can not flow in the air guide channel 11; And after the stall of new pump rotor, slip can impel flap 14 to close the import 3 of air guide channel again, advances in the air guide channel 11 to prevent pulp flow.Above-mentioned other parts except that the new pump rotor are prior art, and this does not repeat its function.

Below describe in detail with regard to the utility model shown in Figure 5 second embodiment again.The new pump rotor of present embodiment is with the difference of the new pump rotor of Fig. 1: impeller 1 is the unshrouded impeller that does not have forward and backward cover plate; Air guide channel 11 is arranged on the inside of blade 12, and impeller 1 includes four blades 12, forms four overcurrent conduits 13 between the blade; Import 3 places at air guide channel are not provided with flap; Wheel hub 9 is a through-hole structure; Other structure characteristic is identical.The working procedure of this new pump rotor is identical with the working procedure among Fig. 1, just after the stall of new pump rotor, has a spot of slip and flows to air guide channel 11 even flow in the passage 5 of rotating shaft.For avoiding this phenomenon, also can in other runner, safety check be set; Certainly, also can flap be set at import 3 places of air guide channel.

Claims

1, a kind of new pump rotor, comprise impeller and rotating shaft, it is characterized in that, passage is arranged in rotating shaft, other has air guide channel to be communicated with between the passage of at least one the overcurrent conduit of impeller and rotating shaft, and the import of the air guide channel that communicates with the overcurrent conduit is positioned at the position away from shaft axis.

2, by the described new pump rotor of claim 1, it is characterized in that impeller is the enclosed impeller that is formed by front shroud, back shroud, blade and wheel hub.

3,, it is characterized in that impeller is half-opened impeller also by the described new pump rotor of claim 1.

4,, it is characterized in that impeller is unshrouded impeller also by the described new pump rotor of claim 1.

5, by the described new pump rotor of claim 1, it is characterized in that the passage of rotating shaft includes the air outlet of the suction port and the rotating shaft passage of rotating shaft passage, the outlet fixing seal UNICOM of the suction port of rotating shaft passage and air guide channel, the air outlet of rotating shaft passage is positioned on the sidewall of passage.

6, by the described new pump rotor of claim 1, it is characterized in that, in the inlet corresponding to air guide channel, flap can be set, flap can be to the direction swing away from shaft axis.