CN2303958Y

CN2303958Y - Axial intake-exhaust double-action water-ring pump

Info

Publication number: CN2303958Y
Application number: CN 97210150
Authority: CN
Inventors: 孙兴忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-18
Filing date: 1997-04-18
Publication date: 1999-01-13
Anticipated expiration: 2007-04-18

Abstract

The utility model relates to an axial gas intake-exhaust double-action liquid-ring pump, which is suitable for delivering chlorine in chlorine-alkali industry. The utility model is characterized in that an inner shell of a pump body is of an oval shape; an impeller is positioned at the centre of the inner shell and is sheathed on a revolving shaft; the end faces of both ends of the impeller are provided with liquid seal ring grooves; both sides of the pump body are symmetrically provided with pump covers with double-layer structure; a liquid circulation channel and a liquid seal channel are arranged on the pump cover; the center of the pump cover is axially provided with a shaft seal negative pressure ring groove; a liquid return hole is arranged on the shaft seal negative pressure ring groove. The utility model has the advantages of simple structure, easy manufacture, stable running, small vibration, low noise and long service life. The utility model solves the problems of gap loss and shaft seal leaking, and enhances the gas delivering capacity of the pump.

Description

Axial air intake and exhaust double-action liquid ring pump

The utility model relates to a kind of water-ring pump, mainly is to be used for the axial air intake and exhaust double-action liquid ring pump that chlorine industry is carried chlorine.

At present, being used to carry the water-ring pump (chlorine press) of chlorine on the domestic chlorine industry mainly is radial air inlet and exhaust cantilever type water-ring pump, and this water-ring pump is a cantilever structure, thereby vibration is big, and noise is also big, and the axle envelope life-span is extremely short, the repair rate height; Because its impeller is that gradient does not become level with pendular ring with the tegillum exhaust passage, cause pressurized gas can not discharge Wan again, displacement is reduced.Once had the people that axial intake and exhaust single-acting vacuum pump is used to carry chlorine, but poor effect is poorly sealed, it is serious to leak outside.The pump case of this in addition axial intake and exhaust vacuum pump is circular, and impeller is in the pump housing all over heart position, thereby can only single effect, and efficient is extremely low.

The purpose of this utility model provides a kind of axial air intake and exhaust double-action liquid ring pump, and the radial air inlet and exhaust that changes water-ring pump is axial intake and exhaust, and changing existing axial single-acting is axial double-action; Fundamentally solve the gap loss between pump cover and the impeller and the shaft sealing leakage problem of pump, thereby productivity gain reduces cost, and increases the service life, promote the development of chlorine industry.

Concrete scheme of the present utility model is: comprise bracket bearing portion, revolving joint portion, pump cover, the pump housing, it is characterized in that: the inner casing ovalize of the pump housing, the center hub that the impeller of revolving joint portion is positioned at pump housing inner casing is contained on the rotatingshaft of revolving joint portion, has the fluid-tight annular groove on the end face at impeller two ends; Bilateral symmetry at the pump housing is equipped with double-deck pump cover, has liquid circulation channel and fluid-tight passage on pump cover, to having an axle envelope negative pressure annular groove, has hole for back flow at the central axis of pump cover on axle envelope negative pressure annular groove.

The utility model is designed to ellipse with the inner casing of housing, makes impeller in the central rotation of oval inner casing, thereby realizes axial intake and exhaust double-action; The utility model is installed the double layer construction pump cover of identical size and structure in the bilateral symmetry of the pump housing, can not only simplify structure, makes manufacturing and maintenance convenient, and has reduced vibration and noise, makes stable working.The utility model is provided with liquid circulation channel in the bottom of pump cover, so that the liquid of discharging is recovered in the pump housing suction chamber after cooling, utilizes once more; The utility model is offered the fluid-tight passage and is offered the fluid-tight annular groove at the impeller end face and is used to solve the axial gas leakage that causes in the gap between impeller and the pump cover on pump cover top, make pressurized gas can't pass fluid-tight, reduces the loss.The utility model seals negative pressure annular groove and hole for back flow at the pump cover central axis to offering axle on the basis of offering fluid-tight passage and fluid-tight annular groove, guarantee that further liquid does not leak outside, and flow of liquid is flowed back in the suction chamber of the pump housing through axle envelope negative pressure annular groove and hole for back flow.

The employing such scheme is simple in structure, makes easy to processly, operates steadily, and vibrates for a short time, and noise is low, and bearing life is long, and the axle envelope does not have and leaks, and the operation period is long.Solve insoluble gap loss of general centrifugal pump and shaft sealing leakage problem, improved the displacement of pump.

Below in conjunction with accompanying drawing and enforcement the utility model is further specified:

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the C-C sectional view of Fig. 1;

Fig. 3 is the D-D sectional view of Fig. 1;

Fig. 4 is the AOB sectional view of Fig. 3.

By above-mentioned accompanying drawing as can be known: the utility model is made up of bracket bearing portion 1, revolving joint portion 2, pump cover 3, the pump housing 5.Annexation of the present utility model and structure characteristic are: the center hub that the inner casing ovalize of the pump housing 5, the impeller 6 of revolving joint portion 2 are positioned at the pump housing 5 inner casings is contained on the rotatingshaft of revolving joint portion 2, has fluid-tight annular groove 9 on the end face at impeller 6 two ends; Bilateral symmetry at the pump housing 5 is equipped with double-deck pump cover 3, has liquid circulation channel 8 and fluid-tight passage 4 on pump cover 3, to having an axle envelope negative pressure annular groove 10, has hole for back flow 11 at the central axis of pump cover 3 on axle envelope negative pressure annular groove 10.Shown in 1, between the pump cover 3 in axle envelope negative pressure annular groove 10 outsides and rotatingshaft, filler 7 is installed, symmetry is set with bracket bearing portion 1 on the rotatingshaft of pump cover 3 outsides, and the motor coupler of revolving joint portion 2 is installed in the termination of rotatingshaft.

As seen from Figure 1: the outlet of the fluid-tight passage 4 on the pump cover 3 is corresponding with the fluid-tight annular groove 9 on the impeller 6.Fluid-tight passage 4 and liquid circulation channel 8 communicate with the pump housing 5 inner chambers.

Impeller 6 is rounded as seen from Figure 2, is distributed with arc shaped blade 15 on its circumference, and impeller 6 rotates in oval-shaped shell and inhales, arranges, inhales, arranges the double-action work done, and the pendular ring 14 in the housing inner casing forms ellipticity.

Can be found out by Fig. 3, Fig. 4: axle envelope negative pressure annular groove 10 communicates with the induction chamber 16 of pump cover 3 by hole for back flow 11.The internal layer of double-deck pump cover 3 is the connecting passage of two exhausting windows 13, and skin is the connecting passage of two air intake windows 12.

During the utility model work, the liquid circulation channel 8 of pump cover 3 communicates with the matching used gas-liquid separator of the utility model, and the motor coupler of revolving joint portion 2 is connected with motor.When the motor rotation, impeller 6 and rotatingshaft rotate with motor, and the gas that enters in the inner casing from the housing import is compressed gradually, and the rotation of impeller 6 makes the interior liquid of housing under action of centrifugal force, has formed elliptoid pendular ring 14 along oval-shaped inner casing.When blade 15 is between air intake window 12 and exhausting window 13 cusps, its space has been full of liquid, and when the space rotated an angle in the direction of the clock thus, liquid layer just outwards moved gradually, so the root of blade 15 has just formed low-voltage space, gas just sucks this space by air intake window 12.Low-voltage space is along with the continuation rotation of rotor enlarges more, and the gas of suction is also just more.When impeller 6 rotations are dwindled the space gradually, suck gas because gradually reducing of space extrudes from exhausting window 13.Impeller 6 whenever rotates a circle, and just carries out secondary suction and exhaust work.Working liquid body has played " liquid piston " in this process.A part of working liquid body of discharging along with gas, with the gas-liquid separator of the utility model adapted in separate, the liquid of recovery enters again in the pump housing 5 by liquid circulation channel 8 and to recycle after cooling, also can circulate from import.In the rotation compression process of pendular ring 14, because the gap between impeller 6 and the pump cover 3, gas-liquid pressure is raise gradually, these pendular ring mesohigh liquid enter the fluid-tight annular groove 9 of impeller on a small quantity through fluid-tight passage 4, gap between shutting axially, make pressurized gas can't pass fluid-tight, thereby reduce gas loss, avoid leaking outside of gas.Because have fluid-tight passage 4 and axle envelope negative pressure annular groove 10 on pump cover 3, the liquid in the gap enters in the axle envelope negative pressure annular groove 10 and flows back to suction chamber 16 through hole for back flow 11.Owing between pump cover 3 that seals negative pressure annular groove 10 outsides at axle and the rotatingshaft filler 7 being installed, guaranteed that further the negative pressure state liquid that can not leaks outside.The utility model has fundamentally solved the gap loss and the axial leakage problem of water-ring pump, and symmetry is installed the double layer construction pump cover 3 of onesize and structure at the two ends of the pump housing 5, not only can eliminate vibration, reduces noise, and the energy simplified structure, reduces cost.

Claims

1. axial air intake and exhaust double-action liquid ring pump, comprise bracket bearing portion (1), revolving joint portion (2), pump cover (3), the pump housing (5), it is characterized in that: the inner casing ovalize of the pump housing (5), the center hub that the impeller (6) of revolving joint portion (2) is positioned at the pump housing (5) inner casing is contained on the rotatingshaft of revolving joint portion (2), has fluid-tight annular groove (9) on the end face at impeller (6) two ends; Bilateral symmetry at the pump housing (5) is equipped with double-deck pump cover (3), on pump cover (3), have liquid circulation channel (8) and fluid-tight passage (4), central axis at pump cover (3) seals negative pressure annular groove (10) to having axle, has hole for back flow (11) on axle envelope negative pressure annular groove (10).

2. axial air intake and exhaust double-action liquid ring pump according to claim 1 is characterized in that: the outlet of the fluid-tight passage (4) on the pump cover (3) is corresponding with the fluid-tight annular groove (9) on the impeller (6).

3. axial air intake and exhaust double-action liquid ring pump according to claim 1 is characterized in that: fluid-tight passage (4) and liquid circulation channel (8) communicate with the pump housing (5) inner chamber.

4. axial air intake and exhaust double-action liquid ring pump according to claim 1 is characterized in that: axle envelope negative pressure annular groove (10) communicates with the induction chamber (16) of pump cover (3) by hole for back flow (11).

5. axial air intake and exhaust double-action liquid ring pump according to claim 1 is characterized in that: the internal layer of double-deck pump cover (3) is the connecting passage of two exhausting windows (13), and skin is the connecting passage of two air intake windows (12).