CN103883496A

CN103883496A - Rotor type multistage pump

Info

Publication number: CN103883496A
Application number: CN201410122747.4A
Authority: CN
Inventors: 余文凌
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-27
Filing date: 2014-03-27
Publication date: 2014-06-25
Anticipated expiration: 2034-03-27
Also published as: CN103883496B

Abstract

The invention discloses a rotor type multistage pump. The rotor type multistage pump is composed of a pump body, a separation tongue sleeve, separation tongues, a rotor, pistons, a pump shaft and a connection rod. According to the rotor type multistage pump, a valve structure of a reciprocation pump is eliminated, separation tongue clearance gap seal is adopted, and high-speed operation can be achieved. The rotor type multistage pump is characterized in that the separation tongue sleeve is provided with a plurality of flow channels 7 led to a suction chamber of the next stage from a discharge chamber of the last stage, liquid discharged from the last stage is conveyed to the suction chamber of the next stage through the flow channels 7 and output from a discharge port after pressurization of many times, and therefore high discharge pressure is obtained. The rotor type multistage pump has the advantages that pressure after the piston of each stage of the multistage pump is pressurized is superposed like a multistage centrifugal pump so that the discharge pressure can be high output pressure, the separation tongue clearance gap seal of each stage does not bear the excessively-large pressure difference, and the service life of the pump is prolonged.

Description

Rotator type multistage pump

Technical field

The present invention relates to a kind of displacement pump, a kind of rotator type multistage pump

Background technique

Compare with centrifugal pump, positive displacement reciprocating pump efficiency is high, and there is superior self-priming performance and high head pressure and be subject to extensive use, but reciprocating pump is due to the retardation phenomenon of valve, piston reciprocating number of times can not reach 550 above speed ups per minute, therefore it must have reducing gear and valve arrangement, thereby the complex structure that seems, bulky, cost is high, be subject to certain restrictions in the use, the rotor pump of emerging valveless, cause people's concern, its self-priming performance is good, simple in structure, volume is little, the high also energy of reciprocal time transporting viscous liquid, as " multi-cylinder radial piston pump " of patent of invention ZL02112763.8 " rotor-type piston pump " and the patent No. 201010206051.1 is.

Rotor-type piston pump is cancelled after valve arrangement, replace with the clearance seal of cut water, zone of high pressure and low pressure area are isolated with cut water at pump inner chamber, flap type or the mitre velve of the clearance seal of cut water and conventional reciprocating pump are compared, its pressure difference that can bear is much lower, the general employing of separation tongue gap sealing increases sealing area and reduces seal clearance and improve sealability, but sealability is still very different.

Summary of the invention

The object of the invention is to: the shortcoming that pressure difference is low is born in sealing for above-mentioned separation tongue gap, propose a kind of rotator type multistage pump that the pressure difference that produces stacks up that multiple separation tongue gaps can be sealed as multistage centrifugal pump.

In order to achieve the above object, rotator type multistage pump of the present invention, comprise the pump housing 1 with suction port and exhaust port, in the described pump housing 1, be fixed with coaxial cut water cover 2, on described cut water cover 2, be shaped with a pair of cut water 3 of the suction area in pump chamber and discharge zone isolation, in the described pump housing 1, coaxial rotor 4 is also housed, on described rotor 4, be shaped with vertically the above radial direction through hole 5 of at least two rows, in described radial direction through hole 5, be equipped with by the radially reciprocating piston 6 of through hole 5 of eccentric stiffener, its special way is: the axis of the multiple radial direction through hole 5 on described rotor 4 is on same cross section, and parallel to each other, on described cut water cover 2, be shaped with multiple runners 7 that lead to next stage suction chamber from upper level discharge side.

The present invention utilizes the motion principle of connecting rod, realize the suction function of pump, in the time that the pump shaft 8 of driven by motor biasing rotates, pump shaft 8 is by flat key 9, connecting rod 10 rotor drivens 4 rotate, it is reciprocating that piston 6 rotates radial direction through hole 5 on an edge rotor 4 on one side, produce volume-variation, suck liquid from suction chamber and discharge liquid from discharge side again, due to the obstruct of the cut water 3 on the pump housing, make to produce pressure difference between discharge side and suction chamber, this displacement pump principle, hydraulic loss and volumetric loss are all little, efficiency is very high, piston 6 is double-action work, often pass on twice of liquid.

Feature of the present invention is that the piston 6 of the first order sucks medium from suction port 11, turning over cut water 3 does not discharge the medium of supercharging from exhaust port, but by runner 7, the medium of supercharging is sent into the suction chamber of second level piston, after repressurize, to send into the suction chamber of third level piston by runner 7, after supercharging, discharge from exhaust port 12.

Good effect of the present invention is: the pressure after every one-level plunger booster of multistage pump is superposeed, make the pressure of discharging reach higher delivery pressure, and excessive pressure difference is not born in the separation tongue gap of every one-level sealing, extended pump working life.

Accompanying drawing explanation

Fig. 1 is triplex embodiment's of the present invention structural drawing.

Fig. 2 is the vertical view cutaway drawing of Fig. 1.

Fig. 3 is the A-A sectional view of Fig. 1.

Fig. 4 is the structural drawing of cut water cover.

Fig. 5 is the plan view of Fig. 4.

Fig. 6 is the C-C sectional view of Fig. 4.

Fig. 7 is the D-D sectional view of Fig. 4.

Embodiment

Fig. 1 is triplex embodiment's of the present invention structural drawing, and Fig. 2 is the vertical view cutaway drawing of Fig. 1, and Fig. 3 is the A-A sectional view of Fig. 1.In figure, show rotator type multistage pump, comprise the pump housing 1 with suction port and exhaust port, in the pump housing 1, be fixed with coaxial cut water cover 2, on cut water cover 2, be shaped with a pair of cut water 3 of the suction area in pump chamber and discharge zone isolation, coaxial rotor 4 is also housed in the pump housing 1, on rotor 4, be shaped with vertically the above radial direction through hole 5 of at least two rows, the axis of the multiple radial direction through hole 5 on rotor 4 is on same cross section, and parallel to each other, in radial direction through hole 5, be equipped with by the radially reciprocating piston 6 of through hole 5 of eccentric stiffener, eccentric stiffener described here is the pump shaft 8 of a biasing, pump shaft 8 is by flat key 9, connecting rod 10 rotor drivens 4 rotate, it is reciprocating that piston 6 rotates radial direction through hole 5 on an edge rotor 4 on one side, produce volume-variation, suck liquid from suction chamber and discharge liquid from discharge side again, the present embodiment is triplex, so be shaped with multiple runners 7 that lead to next stage suction chamber from upper level discharge side on cut water cover 2, the liquid that consequently upper level is discharged transfers to the suction chamber of subordinate through runner 7, through repeatedly exporting from exhaust port 12 after supercharging, obtain higher head pressure.

Fig. 4 is the structural drawing of cut water cover, and Fig. 5 is the plan view of Fig. 4, and Fig. 6 is the C-C sectional view of Fig. 4, and Fig. 7 is the D-D sectional view of Fig. 4.Show from figure, this cut water has put two runners 7, when pump work, first order piston sucks liquid from suction port, after supercharging, deliver to low pressure area, the second level through Article 1 runner 7, after the plunger booster of the second level, deliver to again the low pressure area of the third level through Article 2 runner 7, after third level plunger booster, from exhaust port output, reach the object of multistage pump supercharging.

Claims

1. a rotator type multistage pump, comprise the pump housing (1) with suction port and exhaust port, in the described pump housing (1), be fixed with coaxial cut water cover (2), on described cut water cover (2), be shaped with a pair of cut water (3) of the suction area in pump chamber and discharge zone isolation, coaxial rotor (4) is also housed in the described pump housing (1), on described rotor (4), be shaped with vertically the above radial direction through hole (5) of at least two rows, in described radial direction through hole (5), be equipped with by the radially reciprocating piston (6) of through hole (5) of eccentric stiffener, it is characterized in that: the axis of the multiple radial direction through hole (5) on described rotor (4) is on same cross section, and parallel to each other, on described cut water cover (2), be shaped with multiple runners (7) that lead to next stage suction chamber from upper level discharge side.