CN207660795U - A kind of piston type metering pump for conveying cleaning solution - Google Patents

Abstract

The utility model is related to a kind of piston apparatus formula metering pumps for conveying cleaning solution, including the pump housing, piston apparatus and driving device, the active chamber moved for piston apparatus is equipped in the pump housing, piston apparatus is connected with driving device by toggle, piston apparatus includes piston and piston rod, one end of piston rod is fixed on piston, the other end along the activity direction of piston extend outwardly and and toggle, piston is intervally distributed at least one groove on the circumferential surface with respect to active chamber inner wall, it is correspondingly embedded in sealing element on each groove, sealing element is close to active chamber inner wall, the top of the pump housing is equipped with the outlet for flowing into the import of pump body for cleaning solution and pump body being discharged for cleaning solution, switch valve is respectively equipped in inlet and outlet；It is provided with multiple grooves and corresponding sealing element in medial surface of cylinder, strengthens the leakproofness of chamber, reduces noise, and measure control is more accurate, and simple in structure, service life extends, at low cost.

Description

A kind of piston type metering pump for conveying cleaning solution

Technical field

The utility model is related to a kind of pumps, more particularly, to a kind of piston type metering pump for conveying cleaning solution.

Background technology

Metering pump is a kind of positive displacement pump of conveying special liquid, the cleaning solution conveying metering of existing washing machine or dish-washing machine The gear wheel metering pump or peristaltic meatering pump used is pumped, gear wheel metering pump is that the identical gear of two sizes is mounted on pump body It is designed like in the cavity of the figure of eight, when cleaning solution is in the cavity for entering two gears, and is full of this space, with Rotary motion of the gear along cavity, finally discharged it when two gears engage, due to two gears engagement when and gear Between avris and cavity inner wall it is not possible that not a bit gap, so in the case where washing fluid viscosity is big, what gap generated Leakage will be lacked, but in the case where washing fluid viscosity is low, the leakage of generation wants more, and there are precision for gear wheel metering pump It is low, the larger problem of noise, peristaltic meatering pump there are precision relatively low, short life, problem of high cost.

Utility model content

Technical problem to be solved in the utility model be for the prior art there are the problem of provide a kind of precision it is high, Long lifespan, a kind of piston type metering pump for conveying cleaning solution at low cost.

Technical solution is used by the utility model solves above-mentioned technical problem：A kind of piston for conveying cleaning solution Device formula metering pump, including the pump housing, piston apparatus and driving device, it is characterised in that：It is equipped with for piston apparatus in the pump housing The active chamber of movement, the piston apparatus are connected with driving device by toggle, and the piston apparatus includes living Plug and piston rod, one end of piston rod are fixed on piston, and the other end extends outwardly along the activity direction of piston and connects with crank Linkage, piston are intervally distributed at least one groove, are correspondingly embedded on each groove on the circumferential surface with respect to active chamber inner wall There is sealing element, sealing element to be close to active chamber inner wall, the top of the pump housing be equipped with for cleaning solution flow into pump body into Mouthful and the outlet of pump body is discharged for cleaning solution, be respectively equipped with switch valve in the inlet and outlet.

Further, the toggle includes connecting rod and flywheel, and one end of the connecting rod is articulated on piston rod, The other end is articulated on flywheel, and the connecting rod deviates the center of circle of flywheel and flywheel is hinged, and circle centre position and the driving of the flywheel fill The output set is fixedly connected.

Further, the switch valve is check valve.

Compared with prior art, the beneficial effects of the utility model are as follows：The piston type metering pump is set in medial surface of cylinder Groove and corresponding sealing element have been set, the leakproofness of chamber is strengthened, has effectively prevent leakage caused by during piston motion The generation of phenomenon, and the matching setting of sealing element and groove so that sealing element deforms smaller during piston motion, extends The service life of sealing element is run using motor driving toggle band piston, reduces noise, and measure control More precisely, and simple in structure, service life extends, at low cost.

Description of the drawings

Fig. 1 is a kind of structural schematic diagram for conveying the piston type metering pump of cleaning solution of the utility model.

Fig. 2 is the simple view of toggle in Fig. 1.

Fig. 3 is the easy structure diagram of piston in a kind of piston type metering pump for conveying cleaning solution of the utility model.

Fig. 4 is the configuration schematic diagram of embodiment one.

Fig. 5 is the configuration schematic diagram of embodiment two.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing embodiment.

As shown in Figs. 1-3, a kind of piston type metering pump for conveying cleaning solution, including the pump housing 100, piston apparatus 200 With driving device 300, the pump housing 100 is interior to be equipped with the active chamber 130 moved for piston apparatus 200, and piston apparatus 200 and driving fill 300 are set to connect by toggle 400, piston apparatus 200 include piston 210 and piston rod 220, the one of piston rod 220 End is fixed on piston 210, and the other end extends outwardly along the direction of motion of piston 210 and is hinged with toggle 400；It is bent Handle link mechanism 400 includes connecting rod 410 and flywheel 420, and one end of connecting rod 410 is articulated on piston rod 220, and the other end, which deviates, to fly 420 centers of circle are taken turns to be articulated on flywheel 420, and, the circle centre position of flywheel 420 is fixedly connected with the output of driving device 300, and crank connects The application of linkage 400, it is simple in structure, while greatly reducing the noise of device.

It is intervally distributed at least one groove 211 on the circumferential surface of above-mentioned piston 210, has been correspondingly embedded on each groove 211 Sealing element 500, sealing element 500 are close in the reciprocating motion of piston apparatus 200 with the inner wall of piston chamber 130, multiple sealings The setting of part 500 improves the leakproofness of active chamber 130, prevents cleaning solution in 200 motion process of piston apparatus from piston It is leaked out in chamber 130, improves the precision of metering.

The top of the above-mentioned pump housing 100 is equipped with for the inlet and outlet inside the cleaning solution disengaging pump housing 100, and inlet and outlet On be respectively equipped with switch valve 800, and the switch valve 800 is check valve.

The operation principle of above-mentioned piston type metering pump：Drive flywheel turns by the output of driving device, due to connecting rod with It is eccentric hinged between flywheel, to which the rotation of flywheel drives the eccentric rotary of connecting rod, and then drive piston apparatus in active chamber Inside make straight reciprocating, by the rotating speed and eccentric distance of control flywheel so as to control each displacement of piston apparatus, Control the output of cleaning solution.

Above-mentioned metering pump is provided with multiple grooves and corresponding sealing element on the circumferential surface of piston, strengthens the sealing of chamber Property, it is effectively prevent the generation of the phenomenon of leakage caused by during piston motion, is driven using motor driving toggle Piston is run, and reduces noise, and measure control is more accurate, and simple in structure, and service life extends, at low cost.

Embodiment one：

Fig. 4 is the specific embodiment of above-mentioned metering pump, and the pump housing 100 includes dismountable pump case head cover 1001 and pump case 1002, extend outwardly on pump case head cover 1001 and is equipped at intervals with import 110 and outlet 120, the bottom of pump case head cover 1001 side by side Active chamber 130 is fixed on face, active chamber 130 extends into pump case 1002, and driving device 300 is fixedly installed in pump case 1002 side is covered with the protective cover 600 of waterproof on the outer surface of driving device 300, and protective cover 600 is prominent to the pump housing 100 Go out to be equipped with extension 610, extension 610 is fixedly connected as the bottom cover of the pump housing 100 with the bottom of pump case 1002, pump case head cover Sealing ring 700, the leakproofness for improving active chamber 130 are equipped between 1001 bottom surface and active chamber 130.

Embodiment two：

Fig. 5 is the another specific embodiment of above-mentioned metering pump, and the pump housing 100 includes dismountable pump case head cover 1001 and pump Shell 1002 and pump case bottom cover 1003, active chamber 130 are integrally formed with pump case 1002, and protective cover 600 does not have extension 610, Other structures are identical as embodiment one.

Embodiment one and embodiment two are the change assembled to the utility model middle pump body, are suitable for different producers Formula, but the effect reached is consistent.

Above description is merely a prefered embodiment of the utility model, it is noted that for those of ordinary skill in the art For, under the premise of not departing from the principles of the present invention, a variety of remodeling or improvement can be carried out to the utility model, these are It is considered as within the scope of protection of the utility model.

Claims (3)

1. a kind of piston apparatus formula metering pump for conveying cleaning solution, including the pump housing（100）, piston apparatus（200）And driving Device（300）, it is characterised in that：The pump housing（100）It is interior to be equipped with for piston apparatus（200）The active chamber of movement（130）, institute State piston apparatus（200）And driving device（300）Pass through toggle（400）Connection, the piston apparatus（200）Including Piston（210）And piston rod（220）, piston rod（220）One end be fixed on piston（210）On, the other end is along piston（210）'s Activity direction extends outwardly and and toggle（400）It is hinged, piston（210）Opposite active chamber（130）The week of inner wall At least one groove is intervally distributed on face（211）, each groove（211）On be correspondingly embedded in sealing element（500）, sealing element （500）With active chamber（130）Inner wall is close to, the pump housing（100）Top be equipped with for cleaning solution flow into the pump housing（100）It is internal Import（110）With the outlet that pump body is discharged for cleaning solution（120）, the import（110）The outlet and（120）It is upper to set respectively There is switch valve（800）.

2. a kind of piston apparatus formula metering pump for conveying cleaning solution according to claim 1, it is characterised in that：It is described Toggle（400）Including connecting rod（410）And flywheel（420）, the connecting rod（410）One end be articulated with piston rod （220）On, the other end is articulated with flywheel（420）On, the connecting rod（410）Deviate flywheel（420）The center of circle and flywheel（420）Hinge It connects, the flywheel（420）Circle centre position and driving device（300）Output be fixedly connected.

3. a kind of piston apparatus formula metering pump for conveying cleaning solution according to claim 1, it is characterised in that：It is described Switch valve（800）For check valve.