CN101509486A

CN101509486A - Liquid transmission pump

Info

Publication number: CN101509486A
Application number: CNA2009100065217A
Authority: CN
Inventors: 武藤明博
Original assignee: NIPPO MOTOR
Current assignee: NIPPO MOTOR
Priority date: 2008-02-14
Filing date: 2009-02-04
Publication date: 2009-08-19
Anticipated expiration: 2029-02-04
Also published as: JP4130470B1; JP2009191717A; CN101509486B

Abstract

This invention is to provide a liquid transmission pump, which does not damage particles in the high viscosity liquid, such as the asphalt and the chocolate, and continuously transmits with a certain flow rate, with reduced shock and excellent durability. The liquid transmission pump of this invention comprises a rotating main shaft, a rotator that is mounted at an end part of the main shaft and rotates with the main shaft, a shell and an internal cylinder. The internal cylinder is provided with a rotating shaft that is mounted between the rotator and the shell and is eccentric corresponding to the main shaft, wherein an isolating component is mounted at one position of an outer peripheral face of the rotator in the axial direction. A space between the shell and the internal cylinder is divided into a positive pressure part and a negative pressure part via embedding the internal cylinder and the isolating component. When the main shaft rotates, the isolating component presses the internal cylinder, the internal cylinder and the rotator do not reciprocate and respectively rotate by using the eccentric rotating shaft as the centre. The volumes of the positive pressure part and the negative pressure part are changed so as to absorb into the negative pressure part. The liquid pressure rises and the liquid is discharged from the positive pressure part.

Description

Liquid transmission pump

Technical field

The present invention relates to the liquid transmission pump of fluid transfer.

Concrete, for example, relate to a kind of liquid transmission pump, do not destroy the particle in pitch and the chocolate high viscosity liquid like this, transmit continuously with certain flow.

Background technique

Proposing all schemes in the past, is the one-stroke pump of realizing by the piston mechanism of former conduct device at intermittence, is about the liquid transmission pump with the certain flow fluid transfer.

For example, put down in writing a kind of rotary pump in the TOHKEMY 2006-170175 communique (hereinafter referred to as patent document 1), in having the housing of positive circular inner peripheral surface, have the rotating cylindrical of positive circular circumference face and have the piston at two ends and the live axle of eccentric shaft by combination, make the gear and the engagement of cylinder internal-gear of live axle, make the live axle rotation, make the volume of the space portion between piston and cylinder and the housing flexible, variation by described volume sucks and discharges from suction port and the exhaust port that the inner peripheral surface of housing leads to periphery, can be applicable to that from the low speed rotation to the high speed rotating, energy efficiency is good with small-sized light weight.

, there is the difficulty that makes the live axle rotation by the engagement of cylinder internal-gear in the method for this patent document 1 record, in addition, because a plurality of gears must be set in housing, there are the following problems, i.e. mechanism's complexity, the product cost height is safeguarded and is expended time in and the labour force.

And former pump is not suitable for continuous transmission, and in addition, there are the following problems for gear pump, valve pump, volute pump etc., because liquid contacts with wall with the flank of tooth of gear pump, the valve of valve pump, particle is damaged by pressure.

And, for example real clear 62-193193 communique (below be called patent document 2) and the TOHKEMY 2005-320929 communique (below be called patent document 3) opened of Japan put down in writing the pump as the present invention, have: rotating main shaft, be arranged on this spindle nose with main shaft rotor rotated, housing and inner core, described inner core has the running shaft with respect to above-mentioned spindle eccentricity that is arranged between this rotor and the housing.

; the pump of described patent document 2 and patent document 3 records; be to be equivalent to the pump that the annulus of inner core of the present invention shakes; because annulus shakes and shakes; there is non-resistant problem; and, there is the problem that is not suitable for the such liquid transfer of the application because the liquid of transmission drains to the possibility height of drive part, and purposes only limits to gas.

Fig. 6 a to Fig. 6 c illustrates the former pump structure of patent document 2 records, and Fig. 6 a is a sectional view, and Fig. 6 b is the A-A sectional drawing, and Fig. 6 c is the B-B sectional drawing.

Among Fig. 6 a to Fig. 6 c, the 21st, lug boss, the 22nd, annulus, the 23rd, housing, the 24th, side plate, the 25th, suction port, the 26th, exhaust port, the 27th, dividing plate, the 28th, axle, the 29th, liquid holdup.

Constitute following structure, if axle 28 rotates along direction shown in the arrow, annulus 22 shakes, and fluid enters from suction port 25, comes out from exhaust port 26.

Wherein, if exhaust port 26 1 sides apply resistance, then the hydrodynamic pressure in the pump rises, fluid is from the clearance leakage between side plate 24 and the housing 23, if gas leakage all has no relations anywhere, but the liquid that leaks then forms liquid holdup 29, and the liquid of delay can't be discharged.

For example, the viscous liquid that asphalt emulsion or molten chocolate are such, enter pump, discharge remaining under the situation of asphalt emulsion under the high temperature that remains on 60 ℃ under 200 ℃, situation at chocolate, under the state of liquid holdup, place aging, the rotational resistance of pump sharply increases, for example, because operative relationship starts the problem that existence may not start after shutting down once more.

Patent document 1: TOHKEMY 2006-170175 communique

Patent document 2: Japan opens clear 62-193193 communique in fact

Patent document 3: TOHKEMY 2005-320929 communique

Summary of the invention

The problem that invention will solve

Problem of the present invention provides a kind of liquid transmission pump, solves the problem that above-mentioned prior art exists, and does not for example destroy the particle in the such high viscosity liquid of pitch and chocolate, transmits continuously with certain flow, and vibrations reduce, and durability is good.

The technological scheme of invention

In order to address the above problem, the present invention deeply inquires into the result of the liquid transfer mechanism of metering pump, a kind of liquid transmission pump is proposed, solve the problem that above-mentioned prior art exists, for example do not destroy the particle in the such high viscosity liquid of pitch and chocolate, transmit continuously with certain flow, vibrations reduce, durability is good, and essence of the present invention is the following content that the scope of claim is put down in writing.

(1) a kind of liquid transmission pump has: rotating main shaft, be arranged on this spindle nose with main shaft rotor rotated, housing and inner core, described inner core has the running shaft with respect to above-mentioned spindle eccentricity that is arranged between this rotor and the housing;

It is characterized in that: the axle direction in a position of the outer circumferential face of above-mentioned rotor is provided with isolating part, chimeric by isolating part and above-mentioned inner core, at above-mentioned housing and inner core, space portion is set respectively between inner core and the rotor, and each space portion is divided into positive splenium and negative pressure portion respectively, during above-mentioned main axis rotation, above-mentioned isolating part extruding inner core, above-mentioned inner core and rotor do not move reciprocatingly, running shaft with off-centre is that the center is rotated respectively, the volume of above-mentioned positive splenium and negative pressure portion changes, liquid is sucked above-mentioned negative pressure portion, and this fluid pressure rises, and discharges from above-mentioned positive splenium.

(2) liquid transmission pump of putting down in writing according to above-mentioned (1), it is characterized in that: be provided with first side plate in the end of above-mentioned inner core, be provided with second side plate in the end of above-mentioned rotor, the position of the above-mentioned isolating part of clamping of described first side plate and second side plate is provided with fluid intake and exhaust port.

Effect:

Invention according to (1) and (2), because the liquid in the housing is extruded, can be owing to the particle in the flank of tooth or the valve destruction liquid, for example, can not destroy the particle in pitch or the chocolate full-bodied like this liquid, can be with the continuous fluid transfer of certain flow, inner core and rotor do not shake, and can significantly reduce the vibrations of pump.

The invention effect

According to the present invention, a kind of liquid transmission pump is provided, for example do not destroy the particle in the such high viscosity liquid of pitch and chocolate, transmit continuously with certain flow, and vibrations reduce, durability is good.

And, do not need to be provided with gear in the housing, simple in structure, product cost is low, safeguards easily, uses to have remarkable result on industry.

Description of drawings

Fig. 1 is the embodiment's of a liquid transmission pump of the present invention exploded view.

Fig. 2 is the embodiment's of liquid transmission pump of the present invention side cross-sectional views and an A-A cross-sectional view.

Fig. 3 is the embodiment's of a liquid transmission pump of the present invention B-B cross-sectional view.

Fig. 4 is the embodiment's of liquid transmission pump of the present invention operational instruction figure.

Fig. 5 is the explanatory drawing of the flow of liquid of liquid transmission pump of the present invention.

Fig. 6 a to Fig. 6 c is the pump structure figure of former patent documentation 2 records.

Symbol description

1 housing

2 inner cores

3 first side plates

4 second side plates

5 rotors

6 main shafts

7 isolating parts

8 suction ports

9 exhaust ports

10 locking members

11 negative pressure portions

12 positive spleniums

21 lug bosses

22 annulus

23 housings

24 side plates

25 suction ports

26 exhaust ports

27 dividing plates

28

29 liquid holdups

Embodiment

Utilize Fig. 1 to Fig. 5 to describe most preferred embodiment of the present invention in detail.

Fig. 1 to Fig. 3 illustrates the embodiment's of liquid transmission pump of the present invention example, and Fig. 1 is an exploded view, and Fig. 2 is side cross-sectional views and A-A cross-sectional view, and Fig. 3 is the sectional drawing in B-B cross section.

Among Fig. 1 to Fig. 3, the 1st, housing, the 2nd, inner core, 3 is first side plates, 4 is second side plates, the 5th, rotor, the 6th, main shaft, the 7th, isolating part, the 8th, suction port, the 9th, exhaust port, the 10th, locking member.

When the to-and-fro motion of reciprocating pump in the past by piston retreats piston, suck liquid, when making piston-advance, drain, therefore the suction and the expulsion valve that need the liquid motion in the control cylinder, and liquid is during by valve, and the speed of liquid increases, at full speed contact, have the problem of destroying the particle in the liquid with side face.

And, pump in the past has: rotating main shaft, be arranged on this spindle nose with main shaft rotor rotated, housing and inner core, described inner core has the running shaft with respect to above-mentioned spindle eccentricity that is arranged between this rotor and the housing, is the pump that rotor or piston shake type, shakes because rotor or piston shake, there is non-resistant problem, and, there is the problem that is not suitable for fluid transfer because the liquid of transmission drains to the possibility height of drive part, and purposes only limits to gas.

Liquid transmission pump of the present invention, have: rotating main shaft 6, be arranged on these main shaft 6 ends with main shaft 6 rotor rotated 5, housing 1 and inner core 2, described inner core 2 has the running shaft with respect to above-mentioned main shaft 6 off-centre that is arranged between this rotor 5 and the housing 1, it is characterized in that: the axle direction in a position of the outer circumferential face of above-mentioned rotor 5 is provided with isolating part 7, chimeric by isolating part 7 and above-mentioned inner core 2, space between above-mentioned housing 1 and inner core 2 and the rotor 5 is divided into positive splenium and negative pressure portion, when above-mentioned main shaft 6 rotates, above-mentioned isolating part 7 extruding inner cores 2, above-mentioned inner core 2 and rotor 5 do not move reciprocatingly, running shaft with off-centre is that the center is rotated respectively, and the volume of above-mentioned positive splenium and negative pressure portion changes, and liquid is sucked above-mentioned negative pressure portion, this fluid pressure rises, and discharges from above-mentioned positive splenium.

According to the present invention, because the liquid in the housing 1 is extruded, can be owing to the particle in the flank of tooth or the valve destruction liquid, for example, can not destroy the particle in pitch or the chocolate full-bodied like this liquid, for example can be with turning round continuously at a high speed that per minute 1000 changes, in addition, inner core 2 and rotor 5 do not shake, and can significantly reduce the vibrations of pump.

And, be provided with first side plate 3 in the end of above-mentioned inner core 2, be provided with second side plate 4 in the end of above-mentioned rotor 5, the position of the above-mentioned isolating part 7 of clamping of described first side plate 3 and second side plate 4 is provided with fluid intake 8 and exhaust port 9, can divide into positive splenium to the place ahead of the sense of rotation of isolating part 7, negative pressure portion is divided at the rear of the sense of rotation of isolating part 7,, can make suction port 8 opposite with exhaust port 9 by making the sense of rotation counter-rotating.

Fig. 2 is side cross-sectional views and the A-A cross-sectional view that the embodiment of liquid transmission pump of the present invention is shown.

As shown in Figure 2, the deviation post that is centered close to up and down of the running shaft of the rotor 5 that is provided with of the end of the running shaft of the inboard inner core 2 that is provided with of housing 1 and main shaft 6 is realized eccentric.

Pump in the past, by described rotor 5 and inner core 2 fixedly common axis of rotation be rotated, shake by making rotor 5 or inner core 2, change the volume of positive splenium and negative pressure portion, but, therefore have the problem of poor durability owing to describedly shake the vibrations that produce pump.

Therefore, liquid transmission pump of the present invention, rotor 5 and inner core 2 have running shaft respectively, chimeric by the isolating part 7 that the axle direction in a position of the periphery of rotor 5 is provided with inner core 2, by isolating part 7 extruding inner cores 2, can make inner core 2 is that the center is rotated with alone running shaft, does not shake before rotor 5 or inner core 2 do not resemble, therefore reduce and shake, realize that the durability of pump is good.

And, not as former pump, because vibrations by rotor 5 or inner core 2, do not form fluid retention fully, therefore, do not worry rotational resistance being increased, do not worry leaking into drive portion owing to liquid is aging, therefore gas not only can be applicable to, also fluid transfer can be applicable to.Fig. 3 is the sectional drawing in B-B cross section among the embodiment of liquid transmission pump of the present invention.

The location that locking device shown in Figure 3 can be used in the running shaft of inner core 2 is determined and is fixing.

Fig. 4 is the embodiment's of liquid transmission pump of the present invention action specification figure, the rotary part position the when isolating part 7 that pump is shown rotates to 30 degree positions.

As shown in Figure 4, basic point is 0 degree, begins rotation from the neutral position along direction shown in the arrow.

Oblique line portion among Fig. 4 represents positive splenium 12, and blank portion represents negative pressure portion 11, and the place ahead of the sense of rotation of isolating part 7 is positive splenium 12, and the rear is a negative pressure portion 11.

As shown in Figure 4, along with isolating part 7 rotations, the volume of negative pressure portion 11 increases, and when rotation 240 was spent, the negative pressure portion 11 of the inboard of inner core 2 was communicated with exhaust port, becomes positive splenium 12, from described positive splenium 12 extruding drains.

Then, isolating part 7 rotates a circle, and original state recovers in positive splenium 12 and negative pressure portion 11.

During this time, inner core 2 and rotor 5 are that rotation is carried out at the center with separately running shaft respectively, and the position relationship of inner core 2 and rotor 5 is shaken before not resembling, and therefore can significantly reduce the vibrations of pump.

Among Fig. 5, consider to rotate along direction shown in the arrow at arbitrarily angled isolating part 7.The position of seal point a and b is constant usually, therefore is accompanied by the rotation of isolating part 7, and liquid capacity acd and volume bgh dwindle, and volume bef and volume akj expansion.

The liquid of above-mentioned volume part of dwindling flows out from exhaust port 9, and the liquid of the volume part of expansion sucks from suction port 8.

Inner core 2 forms the shape of stopping up suction port 8, but does not hinder from inner core 2 inside and outside circulations to suction port 8.The circulation of exhaust port 9 also is like this.

Claims

1, a kind of liquid transmission pump has: rotating main shaft, be arranged on this spindle nose with main shaft rotor rotated, housing and inner core, described inner core has the running shaft with respect to above-mentioned spindle eccentricity that is arranged between this rotor and the housing;

2, liquid transmission pump according to claim 1, it is characterized in that: be provided with first side plate in the end of above-mentioned inner core, be provided with second side plate in the end of above-mentioned rotor, the position of the above-mentioned isolating part of clamping of described first side plate and second side plate is provided with fluid intake and exhaust port.