CN2163254Y

CN2163254Y - Energy saving radial dual-action liquid circulation pump

Info

Publication number: CN2163254Y
Application number: CN 92232638
Authority: CN
Inventors: 吴步锋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-13
Filing date: 1992-09-13
Publication date: 1994-04-27
Anticipated expiration: 2002-09-13

Abstract

The utility model discloses an energy saving radial double-action liquid circulation pump. A distributor (6) in the liquid circulation pump, which plays the actions of radial air inlet and air outlet, is made into a cylinder provide with highervolume efficiency. Simultaneously, the angle of the flow channel of the distributor (6), which ensures the inlet flow channel and the outlet flow channel of the liquid circulation pump to be symmetric. The utility model is simple in structure and can reduce the resistance loss of air stream on the way. Each sealed junction plane of the utility model is sealed by an O-shaped ring, which has stable sealing performance and high precision of assembly and position. When the utility model is aeesmbled, the sealed junction planes don't need to be adjusted or fitted. The utility model is suitable for compression and delivery of various chemical industrial gas and is used for vacuum pumps.

Description

Energy saving radial dual-action liquid circulation pump

The utility model relates to a kind of radially double-action water-ring pump.

At present in Chemical Manufacture, radially the double-action water-ring pump is used for compression and conveying more and has gases such as burn into is poisonous, inflammable and explosive.This water-ring pump energy consumption is bigger, and efficient is low, and fault is more.Domestic existing radially double-action Pendular ring type chlorine gas pump efficiency is that 26～30%(is please referring to standard HG2269-91 " pattern and the basic parameter of single-stage cantilever double-action Pendular ring type chlorine gas pump ").Abroad, have 1256 types that U.S. Na Shi (NASH) company of nearly 85 years production histories produces radially the most effective of double-action water-ring pump reach 32～35%; The PXK-600/1.5 type chlorine gas pump that former Soviet Union produces also is a double acting structure radially, and its efficient is 25～30%.

Radially the working principle of double-action water-ring pump as shown in Figure 1: impeller 1 rotates in the pump case 2 with long-round-shape inner chamber, in pump case 2, fill an amount of liquid in advance, when impeller 1 rotation, liquid get rid of to around, form the pendular ring 3 of a rotation, two adjacent blades constitute the capacitor 4 of a sealing on the impeller 1 in pendular ring, along with the rotation of impeller, the internal surface 5 of pendular ring moves radially in chamber, plays the effect of suction and pressurized gas just as the piston of reciprocal compressor.Radially enter impeller from the low-pressure gas of Pump Suction Nozzle 7 through the air-breathing window 8 of distributor 6, along with the rotation of impeller, the volume of this closed chamber 4 increases gradually, carries out the suction process of gas; Impeller continues rotation, and the volume of chamber dwindles again gradually, carries out the compression process of gas.Pressurized gas after the compression radially feed the exhaust window 9 on the distributor again, export from the exhaust port 10 of pump at last.Impeller whenever rotates a circle, and secondary is respectively carried out in air-breathing and exhaust.

Existing pendular ring pump structure such as Fig. 2 (a, b) and shown in Figure 3.Fig. 2 a is the sectional arrangement drawing of water-ring pump, and Fig. 2 b is a partial enlarged drawing.Impeller 1 is conical with the rotation fitting surface of distributor 6, and the gap that rotatablely moves is δ; Cone angle is 2 β.Air-breathing window on distributor 6 and the pump cover 11 and exhaust window are to rely on the precision machining of conical surface to seal.Fig. 3 is the drawing in side sectional elevation of pump cover 11, and it is asymmetric that two air-flows that gas enters into two air inlet windows 12 on the distributor 6 from the suction port 7 on the pump cover 11 enter route 13.Gas after the compression is discharged route 15 by two air-flows of two exhaust windows 14 on the distributor 6 on pump cover 11 again, transfers out from exhaust port 10, and it also is asymmetric that two air-flows are discharged route 15.

The shortcoming of the water-ring pump of this structure is 1) impeller is conical with cooperating of distributor, its cone angle is 2 β, this fitting surface is in exhaust process, suitable triangle abc(being arranged referring to Fig. 2 b) pressurized gas of area fail to drain, the expansion and the pressurized gas that these do not drain expand in breathing process subsequently, reduce the gas flow that sucks, reduced volumetric efficiency; 2) because two air-flow turnover routes are asymmetric, easy shape turbulent flow and vortex in the work, energy loss is big; 3) its sealing is that sealing effect is poor by cone match or gasket seal, easily leaks.

The purpose of this utility model provides a kind of simple in structure, and is easy to manufacture, the radially double-action water-ring pump that efficient is high.

The purpose of this utility model is achieved through the following technical solutions:

A kind of energy-saving radially double-action water-ring pump, comprise an impeller that drives its rotation by axle, inner chamber is for long-round-shape inside is filled with the pump case of appropriate amount of fluid, places the distributor of impeller hub and has the pump cover of import and export, and the rotation fitting surface of described impeller and distributor is the cylndrical surface.

Its advantage be pump in compression process, can drain whole pressurized gas and suck again fresh low-pressure gas, the volumetric efficiency height can reach 35～38%; The rotation fitting surface of impeller and distributor is cylindrical, thereby simple in structure, easy to manufacture.

Other details of the present utility model and advantage can be cheer and bright by reading the embodiment hereinafter encyclopaedize in conjunction with the accompanying drawings, wherein:

Fig. 1 is the fundamental diagram of double-action water-ring pump radially;

Fig. 2 a is the structural drawing of known radially double-action water-ring pump;

Fig. 2 b is the partial enlarged drawing of Fig. 2 a;

Fig. 3 is the drawing in side sectional elevation of Fig. 2 a pump cover;

Fig. 4 is the structural drawing of the utility model water-ring pump;

Fig. 5 is the drawing in side sectional elevation of Fig. 4 pump cover.

With reference to Fig. 4 and Fig. 5.Fig. 4 is the sectional arrangement drawing of this pump, and the rotation fitting surface between impeller 1 and the distributor 6 is cylindrical, and the gap that rotatablely moves is δ, and distributor 6 is to be connected with a vertical junction plane 16 with pump cover 11, and the static seal face of each part is all with "O 17 sealings.Fig. 5 is the drawing in side sectional elevation of pump cover 11, because the inner flow passage of distributor 6 has reversed a suitable angle, make pump cover 11 and air inlet window 12 and the exhaust window 14 of distributor 6 on vertical engagement face 16, with respect to pump intake 7 and exhaust port 10 are symmetric arrangement, thereby two air-flows of its gas enter route 13 and two air-flows discharge routes 15 also are symmetrical.

Impeller 1 is made cylindrical with the rotation fitting surface of distributor 6, compare with the conical fitting surface of prior art, its effect is in compression process, can drain whole pressurized gas and suck again fresh low-pressure gas (in fact because the existence of radial clearance δ, having the part high pressure air to know from experience from exhaust window 9 overflows and the air-breathing window 8 that drains to low pressure goes), the utility model has higher volumetric efficiency than existing product.

Each sealed faying face of the present utility model all adopts "O 17 to seal, rather than the gasket seal of existing product.Advantages such as its effect is: "O not only seals reliably, reduces the leakage and the corrosion of sealing surface, and working life is long; Another important function is the Location accuracy when having improved assembling.In actual production, only need the processing method of medium accuracy can guarantee that radial clearance δ value in the operating range that requires, must not adjust or repair.

The utility model is done low-angle reversing to the runner of distributor 6, thereby makes the turnover runner symmetric arrangement on the pump cover 11, and accompanying drawing 5 is compared with prior art accompanying drawing 3, can greatly reduce turbulence scale and the vortex region caused energy loss of air-flow along journey.

An application example of the present utility model is to be used for replacing at present at China's chlorine industry consumption very big " single-stage cantilever double-action Pendular ring type chlorine gas pump ".The utility model also is fit to compression and carries many chemical mediums, can be used to force feed chlorine when doing pendular ring with the concentrated sulphuric scid; When being cooked pendular ring, water can be used to gases such as force feed vinyl chloride, ethene, propylene, coal gas, ethane; And chemical reaction does not take place or is not dissolved in other gases of pendular ring in all and pendular ring medium.The utility model can also be used to aspiration vacuum and makes vacuum pump usefulness.

Claims

1, a kind of energy-saving radially double-action water-ring pump, comprise an impeller (1) that drives its rotation by axle, inner chamber is the pump case (2) that oblong inside is filled with appropriate amount of fluid, place the distributor (6) of impeller (1) wheel hub and have the pump cover (11) of import and export, it is characterized in that the described impeller (1) and the rotation fitting surface of distributor (6) are the cylndrical surface.

2,, it is characterized in that described pump cover (11) and air inlet window (12) and the exhaust window (14) of distributor (6) on vertical engagement face (16) are symmetric arrangement with respect to pump intake (7) and exhaust port (10) according to the described water-ring pump of claim 1.

3,, it is characterized in that its used seal arrangement is " O " V-shaped ring (17) according to claim 1 or 2 described water-ring pumps.