CN201351603Y - Balanced type axial sliding vane pump - Google Patents

Abstract

The utility model relates to a sliding vane pump and in particular relates to a balanced type axial sliding vane pump. According to the technical proposal of the utility model, the balanced type axial sliding vane pump comprises a front pump bonnet and a rear pump bonnet which are installed on a pump shell; a hub disc with the two ends respectively spanned on the front pump bonnet and the rear pump bonnet is rotatably connected in the pump shell; a fluid inlet and a fluid outlet are arranged on the pump shell; a suction flow passage communicated with the fluid inlet is arranged on the inner wall of the pump shell; an extrusion flow passage communicated with the fluid outlet is arranged on the inner wall of the pump shell; a runner is arranged on the hub disc; the length direction of the runner is the same with the direction of the axis of the hub disc; a sliding vane is slidingly inserted in the runner; the rear head face of the front pump bonnet is a skew surface; the front head face of the rear pump bonnet is a skew surface; and the rear head face of the front pump bonnet and the front head face of the rear pump bonnet are staggered for 180 degrees. The sliding vane pump has the advantages of totally balanced radial force and axial force, smooth operation, and small pulsating movement and noise.

Description

Balance type axial sliding-vane pump

Technical field

The utility model relates to a kind of sliding vane pump, especially a kind of balance type axial sliding-vane pump.

Background technique

Sliding vane pump mainly refers to radially sliding vane pump at present, and it is made up of rotor, stator (being the pump housing), slide plate and two side cover plates.When relying on the eccentric rotor rotation on pumping cylinder and the rotor between adjacent two blades the variation of formed swept volume carry liquid or make it the rotary pump of supercharging.Rotor is the cylindrical body with radial groove, lays slide plate in the groove, and slide plate can be free to slide in groove.Be placed in the pump housing, when rotor during by prime mover driven rotary, slide plate relies on centrifugal force or spring force to be pressed on the inwall of the pump housing rotor eccentricity.Half way around before rotor, the space that adjacent two blades surrounded increase the formation parital vacuum gradually and suck liquid.Half way around then, this space reduces gradually, extruding liquid, with feeding liquid under pressure in discharge tube.Radially slide with sliding vane pump at present commonly used, size mainly is radially, and the radial force during operation can not balance.The sliding vane pump structure is compact, and boundary dimension is little, and flow is more even, and running is steady, and pulsation and noise are little, and efficient is than general gear pump height.The sliding vane pump part is easy to wear.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of radial force and axial force complete equilibrium, running steadily, pulsation and the little balance type axial sliding-vane pump of noise.

The technological scheme that provides according to the utility model, this balance type axial sliding-vane pump, be included in front pump cover and the rear pump cover installed on the pump case, be rotatably connected to two ends in the pump case and be erected at reel on front pump cover and the rear pump cover, on pump case, be provided with fluid inlet and fluid output, be provided with the suction runner that is communicated with fluid inlet at the pump case inwall, be provided with the extrusion runner that is communicated with fluid output at the pump case inwall, on reel, offer chute, described chute length direction is consistent with the axial direction of reel, sliding plug has slide plate in chute, the ear end face of described front pump cover is a slant curved surface, the front-end face of rear pump cover is a slant curved surface, and the front-end face of the ear end face of front pump cover and rear pump cover misplaces 180 °.

The utlity model has radial force and axial force complete equilibrium, running steadily, advantage such as pulsation and noise be little.

Description of drawings

Fig. 1 is an exploded view of the present utility model.

Fig. 2 is a plan view of the present utility model.

Fig. 3 is the left view that partly cuts open of the present utility model.

Fig. 4 is the plan view that partly cuts open of the present utility model.

Fig. 5 is the slide plate end face axial shift diagram in the utility model.

Embodiment

The utility model is described in further detail below in conjunction with concrete drawings and Examples.

As shown in the figure: the utility model mainly is made of with parts such as extruding runner 9 pump case 1, rear pump cover 2, reel 3, slide plate 4, front pump cover 5, fluid inlet 6, fluid output 7, suction runner 8.

This balance type axial sliding-vane pump, be included in the front pump cover 5 and rear pump cover 2 installed on the pump case 1, be rotatably connected to two ends in the pump case 1 and be erected at reel 3 on front pump cover 5 and the rear pump cover 2, on pump case 1, be provided with fluid inlet 6 and fluid output 7, be provided with the suction runner 8 that is communicated with fluid inlet 6 at pump case 1 inwall, be provided with the extrusion runner 9 that is communicated with fluid output 7 at pump case 1 inwall, on reel 3, offer chute, described chute length direction is consistent with the axial direction of reel 3, sliding plug has slide plate 4 in chute, the ear end face of described front pump cover 5 is a slant curved surface, the front-end face of rear pump cover 2 is a slant curved surface, and the front-end face of the ear end face of front pump cover 5 and rear pump cover 2 misplaces 180 °.

8 slide plates 4 are placed in the chute of the reel 3 that is rotated counterclockwise, and it can endwisely slip in the reel 3 of rotation; The left and right sides end face of each slide plate 4 promotes slide plate 4 left and right sides axially reciprocatings along front pump cover 5 and rear pump cover 2 equidistant curved surface of column end face circumferential slippage, reduces cyclically-varying gradually thereby chamber, 4 left and right sides of slide plate volume is increased to gradually.

In Fig. 2, Fig. 3 and Fig. 4, can see:

Pump case 1 inner opposite angle chamber is identical and communicate, as A1 and A2, and B1 and B2, C1 and C2.

See plan view, the axial length of slide plate 4 is Lv, and the chute width of reel 3 is that Wg. refers now to slide plate 4 in rear pump cover 2 and 3 variations apart from W1 β of reel.β is slide plate 4 and the angle of rear pump cover 2 along 0 ° of arrow sense of rotation.Then:

W1β＝(Lv-Wg)/2×(1+(sinβ))。The variation of W1 β such as Fig. 5.

I we see the sinusoidal variations of W1 β from the graph.Thereby 4 variations at rear pump cover 2 of slide plate also are sinusoidal variations, thereby form aspiration procedure.

In like manner, W2 β is in the variation of slide plate 4 in front pump cover 5 and 3 distances of reel,

W2β＝(Lv-Wg)/2×(1-(sinβ))

From W1 β and W2 β as can be seen.

W1β+W2β＝(Lv-Wg)

W1 β and W2 β 180 ° of phase differences mutually

So far, as can be seen, slide plate 4 sees Table 1 in the volume-variation of rear pump cover 2.

Table 1

In like manner, slide plate 4 in the volume-variation of front pump cover 5 for seeing Table 2.

Table 2

The suction chamber of the suction chamber of rear pump cover 2W1 β and front pump cover 5W2 β feeds pump inlet;

The extrusion chamber of the extrusion chamber of rear pump cover 2W1 β and front pump cover 5W2 β feeds pump discharge.

Chamber, left and right sides working procedure is identical, and axial force is a complete equilibrium; 180 ° of chamber, left and right sides work phase phase differences, radial force is a complete equilibrium.

Claims (4)

1, a kind of balance type axial sliding-vane pump, be included in pump case (1) and go up the front pump cover of installing (5) and rear pump cover (2), be rotatably connected to two ends in the pump case (1) and be erected at reel (3) on front pump cover (5) and the rear pump cover (2), on pump case (1), be provided with fluid inlet (6) and fluid output (7), be provided with the suction runner (8) that is communicated with fluid inlet (6) at pump case (1) inwall, be provided with the extrusion runner (9) that is communicated with fluid output (7) at pump case (1) inwall, it is characterized in that: on reel (3), offer chute, described chute length direction is consistent with the axial direction of reel (3), and sliding plug has slide plate (4) in chute.

2, balance type axial sliding-vane pump according to claim 1, the ear end face that it is characterized in that described front pump cover (5) is a slant curved surface.

3, balance type axial sliding-vane pump according to claim 1, the front-end face that it is characterized in that described rear pump cover (2) is a slant curved surface.

4, balance type axial sliding-vane pump according to claim 1 is characterized in that the ear end face of described front pump cover (5) and the front-end face of rear pump cover (2) misplace 180 °.

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