CN201007276Y

CN201007276Y - Roter used for rotary type displacement pump

Info

Publication number: CN201007276Y
Application number: CNU2007201066270U
Authority: CN
Inventors: 聂如国
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-13
Filing date: 2007-02-13
Publication date: 2008-01-16
Anticipated expiration: 2017-02-13

Abstract

A rotor used on the rotary displacement pump comprises a body (1) which is provided with a shaft hole (11) on the center, and a vane (2) which takes the shaft hole as the central symmetry, wherein two side surfaces of the vane (2) which are tangent with the axial direction of the rotor are opened with concave cavities (22). Compared with the prior art, the utility model decreases the friction surfaces between the vane and the front and the back two ends of the pump body, directly reduces the abrasion of the vane and the pump body during working, and prolongs the utilizing life; at the same time, the conveying medium can be crushed in the concave cavity on the vane, thereby directly decreasing the impact of the medium and high pressure areas on the two sides of the vane to the low pressure area, and ensuring that the displacement pump works smoothly and stably; and in addition, the concave cavity corresponding to each side surface cooperates naturally and form the separating wall which separates the front part and the back part of the vane, thereby saving the material of the vane, reducing the manufacturing cost and decreasing the energy consumption. The utility model is very practical.

Description

A kind of rotor that is used for rotarydisplacement pump

Technical field

The utility model relates to the technical field of displacement pump, especially refers to a kind of rotor that is used for rotarydisplacement pump.

Background technique

Displacement pump, industrial departments such as chemical industry, metallurgy, electric power, papermaking, food, pharmacy, synthetic fiber have been widely used in, displacement pump is divided into reciprocating type and rotary type two big classes, rotarydisplacement pump wherein, the medium that is specially adapted to carry thick high concentration medium, Korrosionsmedium or does not allow pollution is such as Lubricants, chocolate mass, paper pulp or the like.Existing rotarydisplacement pump, generally comprise two rotors eccentric and arranged in a crossed manner each other in the pump housing that is provided with import and export, pump cover, main shaft, driven shaft, the pump housing and transmission part and mechanical seal parts, wherein, main shaft and driven shaft drive two rotations that rotor is reverse each other respectively, fed sheet of a media enters from the import of the pump housing, the process rotor rotated drives the outlet of the pump housing, then from this outlet output.As the patent No. is that the Chinese utility model patent " double fluid logical commutation type lobed rotor pump " of ZL200520023995.X (notification number is CN2789461Y) discloses so a kind of rotarydisplacement pump.

But in the present rotarydisplacement pump, its rotor generally comprises that central authorities are provided with the body of axis hole and with this symmetrically arranged blade in axis hole center, the number of its blade can be two or three, some in addition more, because when rotor rotates in the pump housing, in the blade with the axial tangent bi-side of rotor in the continuous inboard of friction pump housing rear and front end, and the bi-side of this blade have bigger area, in the course of time, this friction certainly will cause the wearing and tearing of the blade and the pump housing, reduces the working life of displacement pump;

On the other hand, rotarydisplacement pump is when work, and the outlet end of the pump housing is higher than the pressure of entrance point, also is that the blade both sides of pump housing internal rotor exist certain pressure difference, there is certain impact force in zone of high pressure in the blade both sides to low pressure area all the time like this, is unfavorable for the displacement pump smooth working.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, provides a kind of and can reduce the friction of the blade and the pump housing and improve working life, simultaneously can guarantee the rotor that is used for rotarydisplacement pump of displacement pump smooth working.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this is used for the rotor of rotarydisplacement pump, include that central authorities are provided with the body of axis hole and be the centrosymmetric blade that is provided with, it is characterized in that with this axis hole: described blade with the axial tangent bi-side of rotor on all have cavity.

Because the shape of vane end faces, size and pump housing inboard are suitable, be that end face is an arc surface, and smooth surface, during work, the medium that is transferred has been full of whole pump chamber, also be full of medium between the end face of blade and the pump housing, in actual use, the impurity that has fine particle and indeterminedness in the medium that needs to carry toward contact, as the solid particle of not milling fully, rigid welding slag in the pipeline etc., the medium that the has solid particle end face and the pump housing inboard of blade that will constantly rub along with the rotation of rotor, like this, in the course of time will wearout parts, and when running into the sort of rigid welding slag, rotor is just very easily stuck in the pump housing, has a strong impact on the normal transportation work of displacement pump, very easily damage parts, therefore, can on the end face of described blade, groove be set, like this, impurity just can be clamp-oned this groove, and has avoided blade to be stuck.

The direction of described groove can be arranged to axially vertical, parallel with rotor, perhaps with rotor axially have certain angle, but for guaranteeing that the medium that has particle can lead to pump housing outlet smoothly, described groove is good with the parallel to an axis with rotor, the medium that has solid granule so just enters in the groove of vane end faces from a side of pump housing import, takes that side of pump housing outlet then to along with the rotation of rotor.

Roll in groove for ease of the solid granule in the medium, the cross section of described groove is good with semicircular in shape.

Compared with prior art, advantage of the present utility model is: offer cavity by the bi-side at blade, reduced the rubbing surface of blade and pump housing rear and front end, the wearing and tearing of the blade and the pump housing have improved working life when directly having reduced work; Simultaneously, by such design, fed sheet of a media will be squeezed in the cavity on the blade, directly reduces the impact of mesohigh district, blade both sides to low pressure area, has guaranteed that displacement pump is smooth and easy, has worked stably; Moreover the cooperation of the cavity nature of each side correspondence forms partition wall, separates before and after the blade, and the material of blade has also been saved in such design, has also reduced energy consumption when reducing manufacture cost, and is very practical; In addition, by on the end face of its blade of rotor, groove being set, when having the medium process vane end faces of particle or hard thing, impurity can be clamp-oned in this groove, prevents that blade is stuck because of impurity, thereby guarantees that medium transport is smooth and easy, simultaneously, can effectively prevent the end face of fine particle friction blade and the inboard of the pump housing, thereby be very suitable for practical application the working life of improving rotor pump; The utility model is simple in structure, is easy to processing, has advantages such as transfer efficiency height, suction capacity is strong, running is steady.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation;

Fig. 2 is the side view of Fig. 1;

Fig. 3 be among Fig. 2 A-A to sectional view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1～shown in Figure 3, the rotor that this is used for rotarydisplacement pump includes central authorities and is provided with the body 1 of axis hole 11 and is the centrosymmetric blade 2 that is provided with this axis hole 11, and described in the present embodiment blade 2 is provided with two;

Wherein, the end face of described blade 2 is provided with the groove 21 of the parallel to an axis of a plurality of and rotor, the cross section semicircular in shape of this groove 21;

And, described blade 2 with the axial tangent bi-side of rotor on all have cavity 22, cavity 22 corresponding on the bi-side cooperates and the formation partition wall 23 of nature, and blade 2 front and back are separated.

During work, rotor is driven by the main shaft that is located in its axis hole 11, in the pump housing, rotate, the medium that has a solid particle enters from the import of the pump housing, solid particle just enters among the groove 21 on blade 2 end faces of rotor, the process rotor rotated drives the outlet of the pump housing, and then, solid particle is exported from outlet together with medium.

Claims

1. rotor that is used for rotarydisplacement pump, include body (1) that central authorities are provided with axis hole (11) and be the centrosymmetric blade (2) that is provided with, it is characterized in that with this axis hole: described blade (2) with the axial tangent bi-side of rotor on all have cavity (22).

2. the rotor that is used for rotarydisplacement pump according to claim 1 is characterized in that: the end face of described blade (2) is provided with groove (21).

3. the rotor that is used for rotarydisplacement pump according to claim 2 is characterized in that: the parallel to an axis of described groove (21) and rotor.

4. according to claim 2 or the 3 described rotors that are used for rotarydisplacement pump, it is characterized in that: the cross section semicircular in shape of described groove (21).