CN102305211A

CN102305211A - Combined type self-priming pump

Info

Publication number: CN102305211A
Application number: CN201110275912A
Authority: CN
Inventors: 王志忠; 王志国
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-15
Filing date: 2011-09-15
Publication date: 2012-01-04

Abstract

The invention discloses a combined type self-priming pump. The self-priming pump comprises a pump case, a transmission device, a liquid inlet and a liquid outlet, wherein the transmission device is arranged in an inner cavity of the pump case; the liquid inlet and liquid outlet are arranged on the pump case; the transmission device comprises a pump shaft and an accessory shaft driven by the pump shaft; the inner cavity of the pump case is divided into two cavities by the pump shaft and the accessory shaft; the two cavities are communicated to the outside of the pump case by the liquid inlet and the liquid outlet respectively; the pump shaft and the accessory shaft are correspondingly provided with a convex part and a concave part which are matched with each other and respectively arranged along the axial directions of the pump shaft and the accessory shaft; and the convex part on the pump shaft divides the inner cavity of the pump case into at least two parts. The self-priming pump provided by the invention has the advantages of small volume, light weight, simple structure, low cost and the like, is convenient to manufacture and maintain and works reliably; when the self-priming pump is in use, the rotation speed ranges from 800r/min to 3,000 r/min; the lift and flow rate are variable; the water, oil and all liquid media can be delivered; and due to little tooth fit, the high-viscosity liquid also can be delivered, and power can be adjusted at will.

Description

The combined type self-priming pump

Technical field

The present invention relates to a kind of liquid medium transfer pump, is a kind of combined type self-priming pump specifically.

Background technique

Existing self-priming pump, the pump housing generally adopt case structure, and inside is provided with exhaust cavity specially, are used for the self-priming process and discharge the gas in the pump housing, make that the volume of whole self-priming pump is big, Heavy Weight, and complex structure, inconvenient operation.

Summary of the invention

To above-mentioned deficiency of the prior art, it is little that the present invention aims to provide a kind of volume, in light weight, simple in structure, easy to operate combined type self-priming pump.

Technical scheme of the present invention is: the combined type self priming pump; Comprise pump case; Be located at transmission device and the liquid inlet on the pump case and the liquid outlet of pump case inner chamber; Said transmission device comprises a pump shaft and is made up of the asessory shaft that pump shaft drives; Said pump shaft and asessory shaft are divided into two cavitys with the pump case inner chamber; Said liquid inlet and liquid outlet are communicated to two cavitys outside the pump case respectively; Corresponding on said pump shaft and asessory shaft have protuberance and a recess that matches and be provided with along its axial direction, and the protuberance on the said pump shaft is divided at least two parts with said pump case inner chamber.

Through the cooperation between pump shaft and the auxiliary axis and on jog cooperate, by forming cavity between protuberance on auxiliary axis, pump shaft, the pump shaft and the pump case inwall, and then realize the decompression and the supercharging of pump.

The present invention has that volume is little, in light weight, simple in structure, easy to make, and cost is low, and reliable operation and advantage such as easy to maintenance are easy to carry; Use when of the present invention, rotating speed can be in 800～3000r/min scope, and its lift and flow are variable.

With the gear pump difference be, but the present invention's transporting water, oil and all liq medium, because of its tooth cooperation is few, thus also can carry for the high liquid of viscosity, and also power can be regulated arbitrarily.

Description of drawings

Fig. 1 is an internal structure schematic representation of the present invention;

Fig. 2 is another status architecture schematic representation of Fig. 1;

Fig. 3 is the schematic perspective view of pump case among Fig. 1.

Embodiment

Below in conjunction with combining specific embodiment and accompanying drawing that the present invention is further illustrated.

Referring to Fig. 1 to Fig. 3; Said combined type self-priming pump; Comprise pump case 1; Be located at transmission device and the liquor inlet on the pump case 14 and liquid outlet 5 of pump case 1 inner chamber; Said transmission device comprises a pump shaft 2 and is made up of the auxiliary axis 3 that pump shaft 2 drives; Said pump shaft 2 and auxiliary axis 3 are divided into two cavitys 40 with pump case 1 inner chamber; 50; Said liquor inlet 4 and liquid outlet 5 are respectively with two cavitys 40; 50 are communicated to outside the pump case 1; Corresponding on said pump shaft 2 and auxiliary axis 3 have protuberance 21 and a recess 31 that matches and be provided with along its axial direction, and the protuberance 21 on the said pump shaft 2 is divided at least two parts with said pump case 1 inner chamber.

Key point of the present invention is: saidly cooperated the imbibition of decompression respectively and the supercharging discharge opeing of two

cavitys

40,50 of realizing by pump shaft 2 and auxiliary axis 3 pump case being opened in 1 minute with rolling between the pump shaft 2 by auxiliary axis 3.

Particularly; Said combined type self-priming pump comprises pump case 1, pump shaft 2, auxiliary axis 3, liquor inlet 4, liquid outlet 5; The inner chamber of said pump case 1 forms by two cylinder cambered surfaces are crossing; Preferably; Said two cylinder cambered surfaces intersect with the acute angle radian; Said pump shaft 2 and auxiliary axis 3 are located at respectively in the said two cylinder cambered surfaces; Said pump shaft 2 and the concentricity axle of auxiliary axis 3 and this two cylinders cambered surface; And the said auxiliary axis 3 cylinder cambered surface little Spielpassung corresponding with it; That is to say that the diameter of axle of said auxiliary axis 3 equates with the internal diameter of said cylinder cambered surface.

And liquor inlet 4 on the pump case 1 and liquid outlet 5 are located at respectively near said auxiliary axis 3 both sides, and are positioned on institute's pump shaft 2 pairing cylinder cambered surfaces, and be preferred, and said liquor inlet 4 is divided into the intersection that two cylinder cambered surfaces intersect with liquid outlet 5.Behind pack into pump shaft 2 and auxiliary axis 3; Liquor inlet 4 on the said pump case 1 will dwindle in the passway of pump case 1 inwall with liquid outlet 5; In order to increase its passway,, establish water conservancy diversion chamfering 6 on liquor inlet 4 in said pump case 1 and liquid outlet 5 ends referring to Fig. 3 at pump case 1 inwall place.

Further, the protuberance 21 on the said pump shaft 2 is at least two, and it cooperates with recess 31 on the auxiliary axis 3 successively.This example is preferred, and the protuberance 21 on the said pump shaft 2 is two, and the recess 31 on the auxiliary axis 3 is one, and two protuberances 21 cooperate with a recess 31 successively.And the cooperation between said protuberance 21 and the recess 31 to be tooth cooperate or protuberance 21 ends cooperate with pump case 1 any of internal chamber wall Spielpassung.

Operation principle of the present invention is: with the protuberance on the pump shaft 2 21 is two; Recess on the asessory shaft 3 is one and is example; The liquid inlet 4 of said combined type self priming pump is inserted the liquid input; And said liquid outlet 5 is connected to the liquid output; When the motor that connects pump shaft 2 rotates; Referring to Fig. 1 and Fig. 2; When the protuberance 21 on the pump shaft 2 goes to recess 31 cooperations on the asessory shaft 3; Pump case 1 inside is two

cavitys

40,50; When motor is rotated further; Because pump shaft 2 rotates counterclockwise; The cavity 40 that communicates with said liquid outlet 5 is divided into two parts 40,40 ' by said pump shaft 2 with asessory shaft 3; Wherein one is high-pressure chamber 40; Another is a low pressure cavity 40 '; Because the protuberance 21 on the pump shaft 2 rotates counterclockwise and the clockwise rotating of asessory shaft 3; Make that the volume of high-pressure chamber 40 is more and more littler; Make the pressure in it increase; Liquid in it or air will be discharged from said liquid outlet 5; Thereby the volume that forms on the said low pressure cavity 40 ' is increasing; When low pressure cavity 40 ' communicates with said liquid inlet 4; Low pressure cavity 40 ' can be from outer imbitition; Further be full of said low pressure cavity 40 '; When the protuberance 21 on the said pump shaft 2 turns to the recess 31 on the said asessory shaft 3; Liquid in the said low pressure cavity 40 ' is filled; Thereby form the cavity 50 among said Fig. 1, when being rotated further, repeat above-mentioned action.Repeat continuous work with this, make liquid constantly suck exactly, from liquid outlet 5, constantly discharge again, form the normal and continuous operation of this pump from liquor inlet 4.

The above only is the detailed description of preferred embodiment of the present invention and graphic, is not to be used for limiting the present invention, and the embodiment or the approximate construction of all similar variations of doing according to creation spirit of the present invention all should be contained among the present invention.

Claims

1. combined type self-priming pump; Comprise pump case; Be located at transmission device and the liquor inlet on the pump case and the liquid outlet of pump case inner chamber; It is characterized in that: said transmission device comprises a pump shaft and is made up of the auxiliary axis that pump shaft drives; Said pump shaft and auxiliary axis are divided into two cavitys with the pump case inner chamber; Said liquor inlet and liquid outlet are communicated to two cavitys outside the pump case respectively; Corresponding on said pump shaft and auxiliary axis have protuberance and a recess that matches and be provided with along its axial direction, and the protuberance on the said pump shaft is divided at least two parts with said pump case inner chamber.

2. combined type self-priming pump according to claim 1 is characterized in that: said pump case inside forms by two cylinder cambered surfaces are crossing.

3. combined type self-priming pump according to claim 2 is characterized in that: said two cylinder cambered surfaces intersect with the acute angle radian.

4. according to claim 2 or 3 described combined type self-priming pumps, it is characterized in that: said pump shaft and auxiliary axis are divided in the two cylinder cambered surfaces, and the said auxiliary axis cylinder cambered surface Spielpassung corresponding with it.

5. combined type self-priming pump according to claim 4 is characterized in that: said liquor inlet and liquid outlet are divided near the auxiliary axis both sides, and are positioned on the corresponding cylinder cambered surface of the said pump housing.

6. combined type self-priming pump according to claim 5 is characterized in that: liquor inlet and liquid outlet end in the said pump case are divided into two cylinder arc face intersections.

7. combined type self-priming pump according to claim 6 is characterized in that: establish the water conservancy diversion chamfering on liquor inlet in the said pump case and the liquid outlet end.

8. combined type self-priming pump according to claim 1 is characterized in that: the protuberance on the said pump shaft is at least two, and it cooperates with recess on the auxiliary axis successively.

9. combined type self-priming pump according to claim 8 is characterized in that: the protuberance on the said pump shaft is two, and the recess on the auxiliary axis is one, and two protuberances cooperate with a recess successively.

10. combined type self-priming pump according to claim 9 is characterized in that: the cooperation between said protuberance and the recess is that tooth cooperates or any cooperation of protuberance end and pump case internal chamber wall Spielpassung.