CN102748279A - Elliptic-rotating sliding vane pump - Google Patents

Abstract

The invention discloses an elliptic-rotating sliding vane pump, comprising a motor connecting shaft (14), rotating pieces, a pump shell (5), a pump cover (1), a support frame (12), a pump base (18), a filler case (10) and a support frame (12), wherein the filler case (10) is arranged between the pump shell (5) and the support frame (12); the pump shell (5), the filler case (10) and the support frame (12) are fastened by bolts; the elliptic-rotating sliding vane pump is characterized in that a rotor (6) is in an inner-hollow structure; the rotating pieces on the rotor (6) are concave sliding vanes (2, 3) which can be moved serially; and the outer arc planes of the concave sliding vanes (2, 3) are tangential to the inner cylinder plane of the inner cavity of a secondary-modified elliptic circular pump shell (6). According to the invention, a rotating-type structure that the eccentric rotor is rotated in a secondary-modified ellipse and is combined with the concave sliding vanes in a serial movement manner is used; and the elliptic-rotating sliding vane pump is characterized by small shape, light weight, large transportable liquid quantity and reduced manufacture cost and has originality and advancement.

Description

The ELLIPTIC REVOLUTION sliding vane pump

Technical field

The present invention relates to a kind of fluid conveying machine, particularly relate to a kind of ELLIPTIC REVOLUTION sliding vane pump.

Background technique

Common fluid conveying machine is various in style, but mainly is divided into velocity profile and volume type two big classes.These two big types can be divided into some kinds of forms again, below characteristics and the deficiency of existence of these several kinds of form fluid conveying machines of first brief introduction:

Fluid conveying machine:

(1) velocity profile fluid conveying machine, the velocity profile fluid conveying machine is divided into impeller type and jet-type by its structure.

1, impeller type comprises all kinds of centrifugal pumps, centrifugal compressor, axial-flow blower, axial-flow pump etc.; They mainly utilize the impeller of high speed rotating that mechanical energy is passed to flowing medium; To improve the pressure energy of fluid, the advantage of the fluid conveying machine of this form is a compact structure, and efficient is high; Flow is big and even, and available motor directly drives.Shortcoming is can not self-priming (as far as pump), and during changes in flow rate, pressure and efficient also change thereupon.

2, the jet-type fluid conveying machine is to utilize a kind of kinetic energy of flowing medium to drive the equipment of carrying the one other fluid medium, and its advantage is simple in structure, and easy processing is fit to chemical industry, environmental protection, and food industry is used.Shortcoming is that the required pressure of main fluid medium is higher, and when changes in flow rate, the flow of the degree of vacuum and the fluid that drives also changes thereupon, and the system of being of limited application.

(2), volume type fluid conveying machine.It is divided into reciprocating type and rotary again.

1, reciprocating type fluid conveying machine, the machinery of this form are to make the variation of swept volume generating period property through piston is reciprocating in cylinder, thereby realize the supercharging and the conveying of fluid.Its advantage is that head pressure is higher, and pressure does not change with the change of flow, and efficient is higher during small flow.Shortcoming is that a cover to-and-fro motion machinery will be arranged, and the volume and weight of complete machine is all bigger, can not directly be connected with high-speed motor, and the adjusting operating mode is also complicated.With reciprocating type same form also have diaphragm pump etc.; Diaphragm pump is that the motion by barrier film makes the variation of swept volume generating period property, thereby realizes the supercharging and the conveying of fluid, and this type of mechanical advantage is a good seal performance; Manufacture cost is not high; But the deficiency that exists is that flow is little, and the motion barrier film damages easily, is not used widely as yet at present.

2, rotary fluid conveying mechanism; Its working principle is to make the variation of swept volume generating period property through rotor high speed rotating in cylinder, thereby realizes the supercharging and the conveying of fluid, and concrete structure has helical-lobe compressor, screw pump, sliding-vane compressor, sliding vane pump, scroll compressor, vortex pump, rolling piston compressor and gear pump etc.; The advantage of these fluid compression engines and pump is simple in structure; In light weight, can directly directly link to each other with high-speed motor, safe and reliable to operation.Shortcoming is that the compressor of screw type, eddy type, gear type and the rotor surface of pump are the curved surfaces of more complicated, and manufacturing is all compared difficulty with detecting; The friction power loss of sliding vane, rolling piston compressor and pump is all bigger, and the fluid internal leakage is also many.

Inventor Li Rui cloud is to the situation of existing technology; Volume type rotary fluid conveying mechanism is carried out deep research, invented a kind of volume type rotary fluid conveying mechanism, Chinese patent in 1997;<patent No.>97111377.7<authorization notification number>1093604<denomination of invention>rotary fluid conveying machine; The structural feature of this rotary fluid conveying machine is that the distribute basket that passes through of many apertures of a cylinder is installed in casing, and inside is provided with an eccentric rotor, rotor with between the basket blade is arranged thoroughly; Pass through between basket internal surface and the rotor outer surface crescent shape working space is arranged; When the driven by motor rotor rotation, drive basket rotation thoroughly through blade, and the crescent shape swept volume is periodically changed; Make fluid pass through the basket aperture and constantly suck, compress and discharge and accomplish fluid delivery process, fluid conveying machine of the present invention is simple in structure, volume is little, efficient is high, vibration is little, operate steadily, easy to operately, suitable carry and compress various clean fluid media.On this basis, the inventor applied for the utility model patent of oval compressed fluid conveying mechanism, the patent No.: CN200420064924.X again on June 10th, 2004; Open (bulletin) number: CN2725577, patentee: Li Ruiyun, oval compressed fluid conveying mechanism; It comprises motor coupling shaft, casing, support and parts such as fluid input, fluid output; It is characterized in that: chassis cavity is an ellipsoidal structure, in oval-shaped casing, is provided with the rotor at an axis deviation casing center, and the motor coupling shaft links to each other with rotor; Elliptic cylinder is tangent in rotor external cylindrical surface and the casing; And and elliptic cylinder between form a crescent shape cavity, rotor is equipped with the moving shaft wheel assembly of a pair of string that can stretch and is close to elliptic cylinder, this product machine volume is little, efficient is high, vibration is little, operate steadily; Make easily, be easy to promote.

In working practice; Inventor Li Rui cloud to above-mentioned two kinds of volume type rotary fluid conveying mechanisies relatively; Particularly two patents of oneself applying for being analyzed, thought that above-mentioned fluid conveying machine can also improve, mainly is to find " oval compressed fluid conveying mechanism "; 200420064924.X patent in shaft wheel assembly intermediate demand mounting spring; Owing to the tired shaft wheel assembly that makes taking place easily after spring work a period of time, and make its service behaviour good not enough, can not adapt to the delivery requirements of multiple fluid no longer with elliptic cylinder is tangent causes the leakage of leaking gas in the casing.

Subsequently; To the situation of existing technology, inventor Li Rui cloud has carried out deep research to the volume type rotary pump, on May 15th, 2009; It is ZL206610019399.3 that the inventor has obtained the patent No., inscribes one's name a license into " fluid conveying machine employing elliptic rotation and compression principle ".And nearly putting into practice in the work more than 3 years, inventor Su Yong literary composition is found, also has some shortcomings for the patent in first to file; For example; Adopt the shaft wheel assembly volume bigger, and the entity structure of rotor is heavier, has increased the motion load of rotor; And its service behaviour is perfect not enough, can not adapt to the delivery requirements of multiple fluid.

Summary of the invention

The purpose of this invention is to provide a kind of ELLIPTIC REVOLUTION sliding vane pump; Big to existing fluid conveying machine volume, quality is heavy, transports the inefficient shortcoming of material; Adopt slide plate to replace shaft wheel assembly of the prior art, improve the purpose of transporting efficient and service behaviour to reach.

Scheme of the present invention is through such realization: construct a kind of ELLIPTIC REVOLUTION sliding vane pump, comprise motor coupling shaft, rotating component, pump case, pump cover, carriage, pump seat, Stuffing box and carriage, be provided with Stuffing box between pump case and the carriage; Pump case, Stuffing box and carriage tighten up with screw, and the pump housing is installed on the pump seat, and the pump case inner chamber is an ellipsoidal structure; Oval pump case inner chamber is the ellipsoidal structure of secondary correction; In the oval-shaped pump case of secondary correction, be provided with the rotor at axis deviation pump case center, the motor coupling shaft links to each other with rotor, and elliptic cylinder is tangent in rotor external cylindrical surface and the pump case; And and elliptic cylinder between form a crescent shape cavity; Rotor is provided with rotating component, and rotating component is close at operation process and oval inner cylinder, and described rotor is interior hollow-core construction; Said epitrochanterian rotating component is the spill slide plate that can go here and there, and the oval pump case inner chamber of the outer arcuate face of spill slide plate and secondary correction inner cylinder is tangent.

Working principle of the present invention is: with existing solid rotor, change and be hollow rotor; Simultaneously, change shaft wheel assembly into the spill slide plate, through above-mentioned change, the load when having alleviated rotor motion has greatly reached energy saving purposes.Product of the present invention adopts eccentric rotor in secondary correction ellipse, to rotate and the moving rotary structure that combines of spill slide plate string.After motor provided power, coupling shaft drove rotor and carries out eccentric high speed rotating, and the spill slide plate of installing in the rotor of going here and there rotates thereupon, spill slide plate outer arcuate face is pressed in the pump case slides on the secondary correction elliptic cylinder.During beginning, because the oval pump case cylinder of secondary correction communicates with enclosed volume and the fluid input that rotor and spill slide plate constitute, fluid just gets into this enclosed volume; When rotation; Because between oval internal surface of secondary correction and the rotor outer round surface is crescent-shaped space, this enclosed volume becomes greatly gradually, forms a low pressure cavity; Fluid is sucked from inlet, get into air-breathing (liquid) process; When rotating to certain position, this enclosed volume breaks away from inlet, along with rotor is further rotated, gets into compression process, and this enclosed volume reduces gradually; Communicate with fluid output when rotating to this enclosed volume, get into exhaust (liquid) process, discharge by fluid being pressed to outer pipe.Like this, along with motor constantly drives the rotor rotation, each enclosed volume constantly sucks through inlet duct successively, constantly discharges from outer pipe again through overcompression, realizes the supercharging and the conveying task of convection cell.

Above-mentioned spill slide plate generally is used for carrying clean liquid, can slurry conveyed in order to make the present invention, and mortar; Food sizes etc. have the slurry of viscosity; Can the spill slide plate that can go here and there be changed becomes the colter shape scraping blade that can go here and there, among the present invention, as further improvement; Said spill slide plate of going here and there can repack the colter shape scraping blade that can be able to go here and there into; The colter end position of said colter shape scraping blade pastes with the oval pump case inner chamber of secondary correction inner cylinder mutually, and the recess of colter end position can scrape slurry, avoids slurry to be deposited on the pump case inner cavity surface.

The present invention compared with prior art, its outstanding substantive distinguishing features and obvious improvement is:

1. ELLIPTIC REVOLUTION sliding vane pump of the present invention adopts eccentric rotor in secondary correction ellipse, to rotate and the moving rotary structure that combines of spill slide plate string, and the shape corpusculum is light, and the fluid flow that can carry is big, and fabricating cost reduces, and has originality and advance;

2. ELLIPTIC REVOLUTION sliding vane pump of the present invention is compared with invention fluid conveying machine employing elliptic rotation and compression principle formerly, owing to adopted hollow type rotor, so quality is lighter, load is littler, and energy-saving and cost-reducing effect is obviously;

3. simple in structure, compact, the few easy workout part of ELLIPTIC REVOLUTION sliding vane pump of the present invention, maintenance cost reduces;

4. ELLIPTIC REVOLUTION sliding vane pump pressure process of the present invention is steady, flow even and amount is big, and self-priming is effective;

5. the spill slide plate or the colter shape scraping blade that are adopted in the ELLIPTIC REVOLUTION sliding vane pump of the present invention are simple in structure, easy to process, so precision is high, and seal clearance is little, and it is low to reveal the step-down rate, helps reducing the consumption of idle work;

6. the colter shape scraping blade that adopts in the ELLIPTIC REVOLUTION sliding vane pump of the present invention can be used for carrying slurry fluid, like mud, mortar, food size etc.;

7. ELLIPTIC REVOLUTION sliding vane pump volume of the present invention is little, shakes for a short time, and noise is low, promotes easily.

Description of drawings

Fig. 1 is common oval schematic representation;

Fig. 2 revises the oval schematic representation in back;

Fig. 3 is the oval schematic representation of secondary correction;

Fig. 4 is the structural representation of ELLIPTIC REVOLUTION sliding vane pump of the present invention;

Fig. 5 is the M-M sectional view of Fig. 4;

Fig. 6 is the structural representation that the spill slide plate makes colter shape scraping blade into.

Component title and sequence number among the figure:

Pump cover 1, spill slide plate 2, spill slide plate 3, interior cover 4, pump case 5, rotor 6, nut 7, lock washer with tongue at outside 8, flat key 9, Stuffing box 10, filler 11, carriage 12, gland 13, motor coupling shaft 14, cover 15 thoroughly, felt collar 16, ball bearing 17, pump seat 18, colter shape scraping blade 19, colter shape scraping blade 20.

Embodiment

Below in conjunction with accompanying drawing and embodiment ELLIPTIC REVOLUTION sliding vane pump of the present invention is described.

Embodiment:

In the patent formerly (patent ZL200610019399.3), inventor Li Rui cloud proposed the formula of the eccentric rotor center of circle to the throw of eccentric b ' of elliptical center, that is:

$b^{\&prime;}=\frac{r(r+k)}{\sqrt{{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HDA00001959640800022.png,HDA00001959640800031.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+{(r+k)}^2}}{a}^{\&prime;}$

Major semi axis a wherein

Semi-minor axis b

The semicoke distance $c=\sqrt{a-b}$

Eccentricity $e=\frac{c}{a}=\frac{\sqrt{a-b}}{a}$

The ratio of short major axis $\frac{b}{a}=\sqrt{1-e}$

A '=b-c is that a ' equals the semi-minor axis focal length that reduces by half

This formula is called ELLIPTIC REVOLUTION compression formula

A '---independent variable wherein ₁

R---independent variable ₂

k ₁---known constant ₁

k ₂---known constant ₂

(concrete calculation method is please with reference to patent ZL200610019399.3)

Yet through nearly 3 years research, inventor Su Yong literary composition finds, in oval a, b, c, four parameters of e, as long as known wherein any two parameters, just can be very fast calculate the throw of eccentric b ' that elliptical center is arrived in the eccentric rotor center of circle, that is:

b′=kb

B ' in the formula--the eccentric rotor center of circle is to the throw of eccentric of elliptical center

The oval semi-minor axis of b--

The k--coefficient of excentralization

Select different a (major semi axis) and b (semi-minor axis), constitute a series of products, coefficient of excentralization k can try to achieve with simple formula in oval a, b, c (semicoke distance) four parameters of e (eccentricity).

So just needn't adopt former ELLIPTIC REVOLUTION compression formula

Ask for b ', thereby avoided removing to find the solution k with the complicated calculation process ₁And k ₂Two constants.

Recognize that from Fig. 1 the figure acceptance of the bid shows the relation between common oval major semi axis, semi-minor axis and the eccentricity, utilize formula b '=kb can calculate the home position o ' of eccentric rotor, but pass through the eccentric rotor center of circle by the line segment A of oval institute intercepting ₁A ₁', A ₂A ₂', A ₃A ₃', A ₄A ₄', A ₅A ₅' ... neither equating.

Recognize that from Fig. 2 the common ellipse of the ellipse of correction and Fig. 1 changes, it obtains the oval correction value that goes up each point through transformation calculations, makes through the eccentric rotor center of circle and is revised ellipse, the intercepting line segment A of (being represented by dotted lines among the figure) institute ₁A ₁', A ₂₂A ₂₂', A ₃₃A ₃₃', A ₄₄A ₄₄', A ₅₅A ₅₅' ... All equate, but for FLUID TRANSPORTATION, slide plate A ₁A ₁' can't run well, must outwards expand the ellipse that obtains the secondary correction.

Recognize that from Fig. 3 secondary correction ellipse is that 1/2nd absolute values of revising oval in addition slide plate width are outwards expanded the ellipse that carries out the secondary correction again, in fact is exactly elliptic cylinder in the pump case.

Pump cover 1, spill slide plate 2, spill slide plate 3, interior cover 4, pump case 5, rotor 6, nut 7, lock washer with tongue at outside 8, flat key 9, Stuffing box 10, fill out filler 11, carriage 12, gland 13, motor coupling shaft 14, cover 15 thoroughly, felt collar 16, ball bearing 17, pump seat 18.

Like Fig. 4 and shown in Figure 5; ELLIPTIC REVOLUTION sliding vane pump of the present invention comprises parts such as motor coupling shaft 14, pump cover 1, spill slide plate 2 and spill slide plate 3, pump case 5, rotor 6, Stuffing box 10, carriage 12 and pump seat 18; Its rotor 6 is a sleeve rotor; Change easily damaged parts for ease, be bumped into the oval interior cover 4 of a secondary correction in the pump case 5, the pump case inner chamber is provided with the rotor 6 at an axis deviation pump case center (being elliptical center); Motor coupling shaft 14 links to each other with nut 7 and rotor 6 through flat key 9; Rotor 6 is equipped with the spill slide plate 2 and spill slide plate 3 that can go here and there, and the oval pump case inner chamber of the outer arcuate face of spill slide plate and secondary correction inner cylinder is tangent, just constitutes closed cavity behind the installation pump cover 1 on the pump case 5.

At motor coupling shaft 14 and rotor 6 connecting places,, be provided with lock washer with tongue at outside 8 for preventing to become flexible; For preventing gas leakage (liquid), be provided with Stuffing box 10 between motor coupling shaft 14 and pump case 5 and the carriage 12, fill out filler 11, compress with gland 13 again; Motor coupling shaft 14 is installed on the ball bearing 17, and fixes with covering 15 thoroughly, covers thoroughly and is provided with felt collar 16 in 15, and it is used to prevent the bearing leakage of oil, and whole machine installation is on pump seat 18.

As shown in Figure 6, spill slide plate 2 changed with spill slide plate 3 becomes colter shape scraping blade 19 and colter shape scraping blade 20, and at this moment, the ELLIPTIC REVOLUTION sliding vane pump can also slurry conveyed, and mortar, food size etc. have the slurry of viscosity, and other structures are identical with Fig. 4 and Fig. 5.

Application examples:

The present invention is compared with invention (patent ZL200610019399.3) formerly, Φ 36mm shaft wheel assembly is replaced with 10mm spill slide plate, the average flow quantity of water pump is by 51.54m ³/ h is increased to 65.48m ³/ h; And through changing original solid rotor into hollow rotor; The quality of whole machine body reduces 20 kilograms, and cost reduces more than percent 10 than former invention, and efficient improves about percent 10; Stuck rate reduces about percent 40, explains that this invention improves substantive distinguishing features and obvious improvement are arranged.

Claims (3)

1. an ELLIPTIC REVOLUTION sliding vane pump comprises motor coupling shaft (14), rotating component, pump case (5), pump cover (1), carriage (12), pump seat (18), Stuffing box (10) and carriage (12), is provided with Stuffing box (10) between pump case (5) and the carriage (12); Pump case (5), Stuffing box (10) and carriage (12) tighten up with screw, and the pump housing is installed on the pump seat (18), and pump case (5) inner chamber is an ellipsoidal structure; Oval pump case (5) inner chamber is the ellipsoidal structure of secondary correction; In the oval-shaped pump case (5) of secondary correction, be provided with the rotor (6) at axis deviation pump case center, motor coupling shaft (14) links to each other with rotor (6), and rotor (6) external cylindrical surface and the interior elliptic cylinder of pump case (5) are tangent; And and elliptic cylinder between form a crescent shape cavity; Rotor (6) is provided with rotating component, and rotating component is close at operation process and oval inner cylinder, it is characterized in that: described rotor (6) is interior hollow-core construction; Rotating component on the said rotor (6) is the spill slide plate (2 that can go here and there; 3), oval pump case (5) the inner chamber inner cylinder of the outer arcuate face of spill slide plate (2,3) and secondary correction is tangent.

2. ELLIPTIC REVOLUTION sliding vane pump according to claim 1; It is characterized in that: said spill slide plate (2 of going here and there; 3) can repack the colter shape scraping blade (19 that to go here and there into; 20), the colter end position of said colter shape scraping blade (19,20) pastes with the oval pump case inner chamber of secondary correction inner cylinder mutually.

3. ELLIPTIC REVOLUTION sliding vane pump according to claim 1 and 2 is characterized in that its application aspect conveying gas, liquid or viscous paste.

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