CN103244391A - Method and device for prolonging service life of elastic hose of peristaltic pump - Google Patents

Abstract

The invention discloses a method and a device for prolonging the service life of an elastic hose of a peristaltic pump. The method and the device have the outstanding advantages that a position, which is squeezed by a roller, of the elastic hose slowly rotates clockwise and anticlockwise alternately within an angle range from 60 degrees to 180 degrees, so that a condition that an elastic hose in the prior art is locally squeezed by a roller in a centralized manner is changed into a condition that the surface of a section of the elastic hose is uniformly squeezed by the roller, abrasion to the elastic hose is suspended, and the service life of the elastic hose is obviously prolonged; according to a plurality of comparison experiments for elastic hoses made of identical materials under identical working conditions, the service life of each elastic hose of the peristaltic pump with the protective device is 8-10 times the service life of a corresponding compared elastic hose, and the repeatable accuracy and the stability of the peristaltic pump are obviously improved; the protective device is irrelevant to the state of a pressure head of a pump head, and symmetrical reciprocating rotation components are driven by a single motor to synchronously rotate in a reciprocating manner in the same direction; and the device is simple in structure, and the method and the device are stable in synchronization effect, obvious in protection effect and applicable to various types of peristaltic pumps for various purposes.

Description

Prolong peristaltic pump elastic hose method and the device thereof in working life

Technical field

The invention belongs to peristaltic pump, particularly relate to a kind of peristaltic pump elastic hose method and device thereof in working life of prolonging.

Background technique

Usually, peristaltic pump is made up of pump head, driver and pump line three parts, pump line is elastic hose, elastic hose is the known in the industry fact because the extrusion abrasion distortion becomes easily damaged parts, and disassemble the medium circulation system and have very complicated operations process again for changing elastic hose, therefore seek and a kind ofly can prolong the method in elastic hose working life as far as possible and install significant.

The applicant discloses a kind of concentration of local with elastic hose and has been subjected to roller to push the method that the surface of changing into one section of elastic hose on average is subjected to the roller extruding in the application for a patent for invention " guard method of peristaltic pump elastic hose and protective gear thereof " of publication number CN102720668A, its particular content is: the nothing constraint elastic hose of rotor roller assembly both sides is placed identical driven gear center hole and fixing respectively; The low speed DC micromotor of identical parameters drives corresponding driving gear respectively, and each driving gear is transmitted in corresponding driven gear, and each driven gear is done 180 ° of forward and reverse alternately rotations in the same way synchronously; Forward and reverse alternate rotation cycle of driven gear is 1-5min; Driven gear moves up and down with the peristaltic pump pressure head, and the driven gear and the driving gear that move upward are separated.Facts have proved that the guard method of above-mentioned peristaltic pump elastic hose has the relatively more significant positive role of effect for the wearing and tearing that delay elastic hose.

Find that by practice there is the practical problem that structure can further be simplified, using effect is more reliable and more stable in technique scheme.

Summary of the invention

The present invention provides a kind of guard method of peristaltic pump elastic hose and device thereof that can delay the elastic hose wearing and tearing in order to solve elastic hose because of the technical problem that abrasion deformation becomes easily damaged parts.

Peristaltic pump elastic hose of the present invention guard method comprises:

1) do not have the reciprocal rotatable parts that the position that retrains elastic hose arranges symmetry in pump head pedestal respective rotor roller assembly both sides, both sides are not had the constraint elastic hose place the axle sleeve of synchronous reciprocal rotatable parts in the same way also fixing respectively;

2) a low speed DC micromotor is through the reciprocal in the same way rotatable parts synchronously of the described rotor roller of driving mechanism synchronous drive assembly both sides, and back and forth the rotatable parts angle range is 60-180 °, and back and forth rotating the commutation cycle is 1-10min;

3) low speed DC micromotor and driving mechanism thereof are supported in pump head pedestal and/or actuator housing.

A kind of protective gear of peristaltic pump elastic hose; the pump head that comprises peristaltic pump; driver and low speed DC micromotor; feature is; the vertical mounting plate that is fixed in pump head pedestal both sides is arranged with reciprocal rotatable parts; the axle sleeve of each reciprocal rotatable parts penetrates nothing constraint elastic hose and the interference fit of peristaltic pump rotor roller assembly both sides respectively; described pump head pedestal and/or actuator housing are supported with an axis of a low speed DC micromotor and this direct current generator transmission thereof; be respectively equipped with drive mechanism between the reciprocal rotatable parts of described axis and pump head pedestal both sides; described reciprocal rotatable parts angle range is 60-180 °, and back and forth rotating the commutation cycle is 1-10min.

The monosymmetric reciprocal rotatable parts of described pump head pedestal are driven gears, and the vertical mounting plate in pump head pedestal both sides is respectively equipped with the driving gear that is meshed with described driven gear, and described two driving gears are fixed in the axis of low speed DC micromotor transmission.

The monosymmetric reciprocal rotatable parts of described pump head pedestal are driven wheel discs of band eccentric shaft, the vertical mounting plate in pump head pedestal both sides is respectively equipped with the active wheel disc of the band eccentric shaft corresponding with described driven wheel disc, initiatively the eccentric shaft of wheel disc and driven wheel disc is connected with connecting rod, and described two active wheel discs are fixed in the axis of low speed DC micromotor transmission.

The monosymmetric reciprocal rotatable parts of described pump head pedestal are driven wheel discs of band eccentric shaft, be provided with the active wheel disc of the band eccentric shaft corresponding with described driven wheel disc respectively that is fixed in axis in the actuator housing, initiatively the eccentric shaft of wheel disc and driven wheel disc is connected with connecting rod.

The monosymmetric reciprocal rotatable parts of described pump head pedestal are driven wheel discs of band eccentric shaft, be provided with the axis of low speed DC micromotor institute transmission in the actuator housing, described axis is the bent axle that is provided with a connecting rod neck, the main journal of bent axle is provided with the active wheel disc of a band eccentric shaft, the connecting rod neck is identical with the eccentric shaft position of active wheel disc, connecting rod neck and wheel disc initiatively respectively with two driven wheel discs in one corresponding, the connecting rod neck is with initiatively the eccentric shaft of wheel disc and the eccentric shaft of corresponding driven wheel disc are provided with the connecting rod that is coupling.

The monosymmetric reciprocal rotatable parts of described pump head pedestal are driven synchronous pulleys, the vertical mounting plate in pump head pedestal both sides is respectively equipped with the active synchronization belt wheel corresponding with described driven synchronous pulley, the active synchronization belt wheel is provided with the ring-shaped synchronous belt that is transmitted in driven synchronous pulley, described vertical mounting plate is provided with the Idle wheel of ring-shaped synchronous belt, and described two active synchronization belt wheels are fixed in the axis of low speed DC micromotor transmission.

Described low speed DC micromotor output shaft is connected with worm screw, and this worm screw is meshed with the worm gear that is fixed on axis.

Described reciprocal rotatable parts are provided with the embedding gap of the elastic hose that is connected mutually with its wheel disc.

Beneficial effect of the present invention and advantage are: the guard method of this peristaltic pump elastic hose and device thereof can make elastic hose be subjected to the position of roller extruding to do forward and reverse alternate rotation of certain corner slowly at it; therefore the surface that is subjected to the roller extruding to change into one section of elastic hose the concentration of local of elastic hose in the prior art on average is subjected to the roller extruding and can delays the wearing and tearing of elastic hose, has obviously prolonged the working life of elastic hose.According to the comparative experiment of many groups, the elastic hose of identical material is under the situation of identical operating mode, and be 8-10 times of contrast elastic hose the working life of adopting its elastic hose of peristaltic pump of this protective gear, and the repeatability of peristaltic pump and stability also are able to obvious raising.This method and device thereof use a low speed DC micromotor to realize that the reciprocal rotatable parts of symmetry back and forth rotate synchronously in the same way, have characteristics simple in structure, that synchronous effect is stable, especially reciprocal rotatable parts of the present invention and driving mechanism thereof are supported in peristaltic pump pedestal or actuator housing and irrelevant with peristaltic pump pressure head state, therefore use convenient.The present invention has the outstanding advantage that the protection effect is obvious, be suitable for various uses and type peristaltic pump.

Description of drawings

Accompanying drawing l is embodiment's 1 structure partial generalized section.

Accompanyingdrawing 2 is Figure 1A portion zoomed-in views.

Accompanyingdrawing 3 is that Fig. 2 A is to partial view.

Accompanyingdrawing 4 is embodiment's 2 drive mechanism schematic representation.

Accompanyingdrawing 5 is embodiment's 3 drive mechanism schematic representation.

Accompanyingdrawing 6 is embodiment's 4 structural representations.

Accompanyingdrawing 7 is that Fig. 6 A is to partial cross sectional views.

Accompanyingdrawing 8 is embodiment's 5 structure partial generalized sections.

Accompanyingdrawing 9 is driven gear example structure schematic representation.

Accompanyingdrawing 10 is driven wheel disc example structure schematic representation of band eccentric shaft.

Accompanyingdrawing 11 is driven synchronous pulley example structure schematic representation.

Number in the figure: 1 pressure head, 2 pedestals, 3 elastic hoses, 4 vertical mounting plates, 4-1 mounting hole, 5 driven gears, the 5-1 circlip for shaft, 5-2 gear gap, 6 driving gears, the 6-1 Cock screw, 7 axises, 7-1 connecting rod neck, 8 worm screw mounting plates, 9 motor mounting plates, 10 worm screws, 11 worm gears, 12 low speed DC micromotors, 13 coupling, the driven wheel disc of 14 band eccentric shafts, 14-1 wheel disc gap, the active wheel disc of 15 band eccentric shafts, 16 connecting rods, 17 driven synchronous pulleys, 17-1 belt wheel gap, 18 active synchronization belt wheels, 19 ring-shaped synchronous belts, 20 Idle wheels, 21 drivers, 22 axle beds.

Embodiment

Further specify the present invention below in conjunction with embodiment and accompanying drawing thereof.

Embodiment 1 as shown in Figure 1, 2, 3, thevertical mounting plate 4 that is fixed inperistaltic pump pedestal 2 both sides is arranged with reciprocal rotatable parts and is transmitted in the driving part of reciprocal rotatable parts, reciprocal rotatable parts of theembodiment 1 and the driving part that is transmitted in reciprocal rotatable parts thereof are that velocity ratio is 1 gear pair, drivengear 5 is reciprocal rotatable parts, anddriving gear 6 is driving parts.The axle sleeve of drivengear 5 is provided with the shoulder that is engaged in 4 one axis hole edges of vertical mounting plate and the caulking groove that is positioned at the circlip for shaft 5-1 ofvertical mounting plate 4 another sides.Vertical mounting plate 4 is individually fixed inperistaltic pump pedestal 2 both sides by mounting hole 4-1.

The axle sleeve of the drivengear 5 of eachvertical mounting plate 4 penetrates the nothing constraintelastic hose 3 of peristaltic pump rotor roller assembly both sides respectively, and the axle sleeve interference fit ofelastic hose 3 and each drivengear 5 is so that elastic hose back and forth rotates with drivengear 5.

Driving gear 6 its axle sleeves of each vertical mounting plate are fixed in anaxis 7 by jackscrew, this axis also fixedly has aworm gear 11 by jackscrew, this worm gear is meshed with theworm screw 10 of being supported by axle bed that is supported onmounting plate 8, andembodiment 1mounting plate 8 andvertical mounting plate 4 joinfixing.Worm screw 10 is connected by the output shaft ofcoupling 13 with the lowspeed DC micromotor 12 that periodically commutates, and lowspeed DC micromotor 12 is supported in motor mounting plate 13.Embodiment's 1motor mounting plate 13 is fixed invertical mounting plate 4.

In Fig. 1embodiment 1 drive mechanism, drivengear 5 also can be structure as shown in Figure 9, and namely the fluted disc of drivengear 5 is provided with the gear gap 5-2 that elastic hose can be embedded that is connected mutually with axle sleeve.It is more convenient that the setting of gear gap makes elastic hose penetrate the axle sleeve of drivengear 5, can conveniently embed as long as the dismounting circlip for shaft takes off driven gear, driven gear is installed again after embedding elastic hose.

Embodiment 2 as shown in Figure 4, the driving part that is fixed in thevertical mounting plate 4 symmetrically arranged reciprocal rotatable parts of peristaltic pump pedestal both sides and is transmitted in reciprocal rotatable parts is respectively the wheel disc of band eccentric shaft, the drivenwheel disc 14 of band eccentric shaft is reciprocal rotatable parts,initiatively wheel disc 15 is driving parts, and the eccentric shaft axle of two wheel discs is connected with connecting rod 16.The structure thatactive wheel disc 15 is supported invertical mounting plate 4 is identical withembodiment 1, and the structure that drivenwheel disc 14 is fixed in axis is identical withembodiment 1, and other structure ofembodiment 2 is identical withembodiment 1.

In Fig. 4embodiment 2 drive mechanism, drivenwheel disc 14 also can be structure as shown in figure 10, and namely drivenwheel disc 14 is provided with the wheel disc gap 14-1 that elastic hose can be embedded that is connected mutually with axle sleeve, and the effect of wheel disc gap is identical withembodiment 1.

Embodiment 3 as shown in Figure 5, the driving part that is fixed in thevertical mounting plate 4 symmetrically arranged reciprocal rotatable parts of peristaltic pump pedestal both sides and is transmitted in reciprocal rotatable parts is respectively synchronous pulley, wherein drivensynchronous pulley 17 is reciprocal rotatable parts, activesynchronization belt wheel 18 is driving parts, the active synchronization belt wheel is provided with the ring-shapedsynchronous belt 19 that is transmitted in driven synchronous pulley, andvertical mounting plate 4 is provided with the Idlewheel 20 of ring-shaped synchronous belt 19.Other structure ofembodiment 3 is identical with embodiment illustrated in fig. 11.

In embodiment illustrated in fig. 53 drive mechanism, drivensynchronous pulley 17 also can be structure as shown in figure 11, the wheel disc that is drivensynchronous pulley 17 is provided with the belt wheel gap 17-1 that elastic hose can be embedded that is connected mutually with axle sleeve, and the effect of belt wheel gap is identical withembodiment 1.

As Fig. 6,7 illustratedembodiments 4, the drivenwheel disc 14 that the reciprocal rotatable parts of symmetry that are arranged at thevertical mounting plate 4 inpump head pedestal 2 both sides are band eccentric shafts, be provided with theaxis 7 that is supported inaxle bed 22 indriver 21 housings,axis 7 fixedly has respectively theactive wheel disc 15 of the band eccentric shaft corresponding with described two drivenwheel discs 14, initiatively the eccentric shaft of wheel disc and driven wheel disc is connected with connectingrod 16, andaxis 7 one ends fix bycoupling 13 and lowspeed DC micromotor 12 output shafts.

Among theembodiment 4, lowspeed DC micromotor 12 also can adopt Worm and worm-wheel gearing (omission accompanying drawing) withaxis 7.

Embodiment 5 as shown in Figure 8, the drivenwheel disc 14 that the reciprocal rotatable parts of symmetry that are arranged at thevertical mounting plate 4 inpump head pedestal 2 both sides are band eccentric shafts, be provided with theaxis 7 that is supported inaxle bed 22 indriver 21 housings, axis is the bent axle that is provided with a connecting rod neck 7-1, the main journal of bent axle is provided with theactive wheel disc 15 of a band eccentric shaft, connecting rod neck 7-1 is identical with the eccentric shaft position of active wheel disc, theactive wheel disc 15 of connecting rod neck 7-1 and band eccentric shaft respectively with two driven wheel discs in one corresponding, the connecting rod neck is with initiatively the eccentric shaft of wheel disc and the eccentric shaft of corresponding driven wheel disc are provided with the connectingrod 16 that is coupling.Axis 7 one ends fix bycoupling 13 and lowspeed DC micromotor 12 output shafts.

More than each embodiment's reciprocal rotatable parts angle range can in 60-180 ° of scope, select, back and forth rotate the commutation cycle and can in the 1-10min scope, select.

More than its commutation drive circuit of low speed DC micromotor of each embodiment drive chip L298N by single-chip microcomputer 89C5X/89CX051 and direct current generator and form.

Description by above each embodiment the present invention as can be seen compared with prior art has the outstanding feature of the irrelevant and single motor of the pressure head state of protective gear and pump head.

In the equipment of many miniature peristaltic pumps front and back paired runnings; if low speed DC micromotor output shaft and axis adopt the kind of drive of worm and gear; join then with low speed DC micromotor output shaft that this device of many miniature peristaltic pumps can move again as long as the worm screw of every miniature peristaltic pump is connected, this Placement belongs to protection scope of the present invention equally.

In the equipment of many miniature peristaltic pumps front and back paired runnings; if back and forth rotatable parts are driven wheel discs; this device of many miniature peristaltic pumps can move as long as connect then by pitman shaft the eccentric shaft of the driven wheel disc of adjacent miniature peristaltic pump, and this Placement belongs to protection scope of the present invention equally.

Claims (9)

1. peristaltic pump elastic hose guard method that delays the elastic hose wearing and tearing is characterized in that comprising:

1) do not have the reciprocal rotatable parts that the position that retrains elastic hose arranges symmetry in pump head pedestal respective rotor roller assembly both sides, both sides are not had the constraint elastic hose place the axle sleeve of synchronous reciprocal rotatable parts in the same way also fixing respectively;

2) a low speed DC micromotor is through the reciprocal in the same way rotatable parts synchronously of the described rotor roller of driving mechanism synchronous drive assembly both sides, and back and forth the rotatable parts angle range is 60-180 °, and back and forth rotating the commutation cycle is 1-10min;

3) low speed DC micromotor and driving mechanism thereof are supported in pump head pedestal and/or actuator housing.

2. the protective gear of a peristaltic pump elastic hose; the pump head that comprises peristaltic pump; driver and low speed DC micromotor; it is characterized in that: the vertical mounting plate that is fixed in pump head pedestal both sides is arranged with reciprocal rotatable parts; the axle sleeve of each reciprocal rotatable parts penetrates nothing constraint elastic hose and the interference fit of peristaltic pump rotor roller assembly both sides respectively; described pump head pedestal and/or actuator housing are supported with an axis of a low speed DC micromotor and this direct current generator transmission thereof; be respectively equipped with drive mechanism between the reciprocal rotatable parts of described axis and pump head pedestal both sides; described reciprocal rotatable parts angle range is 60-180 °, and back and forth rotating the commutation cycle is 1-10min.

3. protective gear according to claim 2; it is characterized in that: the monosymmetric reciprocal rotatable parts of described pump head pedestal are driven gears; the vertical mounting plate in pump head pedestal both sides is respectively equipped with the driving gear that is meshed with described driven gear, and described two driving gears are fixed in the axis of low speed DC micromotor transmission.

4. protective gear according to claim 2; it is characterized in that: the monosymmetric reciprocal rotatable parts of described pump head pedestal are driven wheel discs of band eccentric shaft; the vertical mounting plate in pump head pedestal both sides is respectively equipped with the active wheel disc of the band eccentric shaft corresponding with described driven wheel disc; initiatively the eccentric shaft of wheel disc and driven wheel disc is connected with connecting rod, and described two active wheel discs are fixed in the axis of low speed DC micromotor transmission.

5. protective gear according to claim 2; it is characterized in that: the monosymmetric reciprocal rotatable parts of described pump head pedestal are driven wheel discs of band eccentric shaft; be provided with the active wheel disc of the band eccentric shaft corresponding with described driven wheel disc respectively that is fixed in axis in the actuator housing, initiatively the eccentric shaft of wheel disc and driven wheel disc is connected with connecting rod.

6. protective gear according to claim 2; it is characterized in that: the monosymmetric reciprocal rotatable parts of described pump head pedestal are driven wheel discs of band eccentric shaft; be provided with the axis of low speed DC micromotor institute transmission in the actuator housing; described axis is the bent axle that is provided with a connecting rod neck; the main journal of bent axle is provided with the active wheel disc of a band eccentric shaft; the connecting rod neck is identical with the eccentric shaft position of active wheel disc; connecting rod neck and wheel disc initiatively respectively with two driven wheel discs in one corresponding, the connecting rod neck is with initiatively the eccentric shaft of wheel disc and the eccentric shaft of corresponding driven wheel disc are provided with the connecting rod that is coupling.

7. protective gear according to claim 2; it is characterized in that: the monosymmetric reciprocal rotatable parts of described pump head pedestal are driven synchronous pulleys; the vertical mounting plate in pump head pedestal both sides is respectively equipped with the active synchronization belt wheel corresponding with described driven synchronous pulley; the active synchronization belt wheel is provided with the ring-shaped synchronous belt that is transmitted in driven synchronous pulley; described vertical mounting plate is provided with the Idle wheel of ring-shaped synchronous belt, and described two active synchronization belt wheels are fixed in the axis of low speed DC micromotor transmission.

8. protective gear according to claim 2, it is characterized in that: described low speed DC micromotor output shaft is connected with worm screw, and this worm screw is meshed with the worm gear that is fixed on axis.

9. protective gear according to claim 2, it is characterized in that: described reciprocal rotatable parts are provided with the embedding gap of the elastic hose that is connected mutually with its axle sleeve.

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