CN208885457U - A kind of metering pump - Google Patents

Abstract

The utility model relates to a kind of metering pumps, the metering pump includes bracket, constant displacement pump, the driving motor to drive constant displacement pump and the transmission mechanism for being separately connected driving motor and constant displacement pump, it further include having variable pump group, variable pump group is connected on transmission mechanism by slide bar component, and transmission mechanism can driving slider component synchronization moves with above and below while driving constant displacement pump under the action of driving motor and variable pump group inputs or output raw material.Utility model has the advantages that such a driving motor passes through transmission component, it can be realized the design of constant displacement pump and the linkage of multiple variable pumps, not only make the metering pump configuration in machine entirety more compact, more space need not be occupied, the utilization rate of the energy can also be improved, and the flow control of variable pump is mutually indepedent, is accurately controlled convenient for the influx to required material.

Description

A kind of metering pump

Technical field

The utility model relates to fluid delivery system more particularly to a kind of metering pumps.

Background technique

Metering pump is widely used in liquid conveying and metering, and existing metering pump is by three parts such as motor, transmission case, cylinder bodies Composition, transmission box part are made of worm gear mechanism, stroke control mechanism and crank link mechanism；Hand is adjusted by rotation Wheel is to carry out adjusting stroke, to change the eccentricity of shifting axle to achieve the purpose that change stroke.

Such as application No. is the Chinese utility model of CN201020288925.8 (Authorization Notice No. CN201747549U) is special Benefit just discloses " a kind of mechanically actuated diaphragm metering pump ", and the metering pump is mainly by drive part, pump head part, casing, shaft coupling, snail The connecting rod of bar axis, motor form, drive part is sleeved on revolving sleeve by rolling bearing, and worm gear is fixed on by rolling bearing On worm-wheel bracket, skewback and push rod shaft link as a whole.When work, the output flow for adjusting pump is by changing diaphragm group The length of stroke of part come the length of stroke realized, and change diaphragm assembly is realized by adjusting crank-pin working radius, with The variation of length of stroke, diaphragm assembly also change with the volume between pump head, the final output flow for changing pump.

One the operation of a machine needs to convey plurality of liquid raw material into machine, in order to guarantee each liquid smooth delivery of power, The prior art mostly uses more metering pumps to cooperate jointly, and above-mentioned driving transmission device is owned by every metering pump, this is just It is meant that the volume for assembling metering pump is larger for entire machine liquid delivery system, more sky is occupied Between, so that production cost, energy cost are significantly increased.

Utility model content

For the current state of the art, the technical problem to be solved by the utility model is to provide a kind of saving space, at This low metering pump.

Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of metering pump, including it is bracket, quantitative Pump, the driving motor to drive constant displacement pump and the transmission mechanism for connecting driving motor and constant displacement pump, further include having variable pump Group, the variable pump group are connected on transmission mechanism by slide bar component, and the transmission mechanism can be under the action of driving motor Driving slider component synchronization moves with while driving constant displacement pump above and below and variable pump group inputs or output raw material.

To guarantee to supply plurality of liquid raw material in machine, the slide bar component includes the slide bar and energy being hinged on bracket The sliding block being slidably arranged on slide bar, the variable pump group include at least one variable pump, and described variable pump one end is hinged on The bottom of bracket, the other end are hinged on sliding block.

For guarantee constant displacement pump and variable pump synchronous working, as an improvement, the transmission mechanism have can move above and below and with The main piston axis that constant displacement pump internal piston is connected, the both ends of the slide bar are rotationally connected to bracket and main piston axis respectively On, and the piston rod of variable pump can be driven to synchronize upper and lower movement with main piston axis.

For the up and down motion for guaranteeing variable pump, the slide bar includes being hinged on main piston axis and capable of synchronizing with main piston axis The first articulated section to move up and down, and it is arranged on the outside of the first articulated section and is hinged on the second articulated section on bracket, it is described First articulated section is hinged on the lower end of main piston axis by pin shaft.

For the feed rate pumped convenient for regulated variable, the setting of the sliding block sliding is in the second articulated section and the first articulated section Between, the through slot through the slide bar is offered on the length direction of the slide bar, the sliding block passes through and slidable setting exists In the through slot, the rocking bar of the flow to adjust sliding block present position and then control variable pump is additionally provided on the through slot.

Further, the sliding block includes that can fasten the shoulder block on edge and the connection by extending downwardly in the middle part of shoulder block on through slot Portion offers the through-hole convenient for being connected with variable pump on the interconnecting piece.

To guarantee that motor driven main piston axis moves up and down, it is preferable that the transmission mechanism further includes having and driving motor The eccentric wheel that output shaft is coaxially disposed and main piston axis can be driven to move above and below, the eccentric shaft and main piston axis of the eccentric wheel Upper end be connected.

To guarantee that variable pump can input or output raw material, the variable pump are successively equipped with interconnected from top to bottom Upper pump casing, middle pump body and lower pump body are provided with piston rod that can be up and down between the upper pump casing and middle pump body.

Specifically, it is communicated with feed pipe on the lower pump body, it is corresponding, discharge nozzle, institute are communicated on the upper pump casing It states and the check valve that restricted liquid charging stock is only delivered to upper pump casing by lower pump body is set between middle pump body and lower pump body.

Compared with the prior art, the advantages of the utility model are: driving motor connects constant displacement pump by transmission component, pass Dynamic component passes through slide bar component simultaneously and is connected on variable pump, transmission mechanism can under the action of driving motor driving slider component It synchronizes and moves with while driving constant displacement pump and the input of variable pump group or output raw material above and below.Such a driving motor passes through Transmission component can be realized the design of constant displacement pump and the linkage of multiple variable pumps, not only make the metering pump configuration in machine entirety It is more compact, it is not necessary to occupy more space, moreover it is possible to improve the utilization rate of the energy, and the flow control of variable pump is mutually only It is vertical, it is accurately controlled convenient for the influx to required material.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model embodiment；

Fig. 2 is the structural schematic diagram of piston rod in the utility model embodiment.

Specific embodiment

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

As depicted in figs. 1 and 2, in the present embodiment, which includes bracket 1, constant displacement pump 2, to drive constant displacement pump 2 Driving motor 3 and connect the transmission mechanism 4 of driving motor 3 and constant displacement pump 2, the constant displacement pump 2 in the present embodiment is conventional Structure, the flow output and input are a definite value.

Transmission mechanism 4 in the present embodiment includes eccentric wheel 42 and main piston axis 41, and eccentric wheel 42 is fixed by support frame 7 It being connected on bracket 1, orienting cover 71 is arranged on main piston axis 41, orienting cover 71 is bolted on support frame 7, wherein 41 lower end of main piston axis is connected with 2 internal piston of constant displacement pump, the upper end of main piston axis 41 and 421 phase of eccentric shaft of eccentric wheel 42 Connection, eccentric wheel 42 and driving motor 3 are coaxially disposed, in this way when driving motor 3 works, so that it may which band movable eccentric wheel 42 revolves Turn, the main piston axis 41 and eccentric shaft 421 being connected on eccentric shaft 421 do upper and lower movement simultaneously.

Slide bar component 6 in the present embodiment includes slide bar 61 and the slidable sliding block 62 being arranged on slide bar 61, slide bar 61 rotate respectively be connected on bracket 1 and main piston axis 41, specifically, slide bar 61 include be hinged on bracket 1 second Articulated section 61a and by pin shaft be hinged on main piston axis 41 lower end and can be with synchronous first to move up and down of main piston axis 41 Articulated section 61b, offers the through slot 611 through the slide bar 61 on the length direction of slide bar 61, and sliding block 62 passes through and slidable Be arranged in the through slot 611, wherein sliding block 62 include can fasten the edge on through slot 611 shoulder block 621 and from the middle part of shoulder block 621 to The interconnecting piece 622 of lower extension offers the through-hole 623 convenient for being connected with variable pump 5 on interconnecting piece 622.On through slot 611 also It is provided with the rocking bar 612 to adjust 62 present position of sliding block, is additionally provided in through slot 611 through through slot 611 and interconnecting piece 622 screw rod, rocking bar 612 are connected to the end of screw rod, the matching of sliding block 62 with screw rod can be achieved in this way, shake rocking bar 612 and are It is mobile that sliding block 62 can be achieved.

It in the present embodiment, further include having variable pump group 5a, variable pump group 5a includes at least one variable pump 5, variable pump 5 One end is hinged on the bottom of bracket 1, and the other end is hinged on sliding block 62 by piston rod 54.First articulated section of above-mentioned slide bar 61 61b can move up and down with main piston axis 41 is synchronous, since screw rod runs through sliding block 62 and through slot 611, be equivalent to about 62 sliding block On slide bar 61, this is meant that when the first articulated section 61b moves up and down with main piston axis 41 is synchronous for limit, sliding block 62 together with It is hinged on the synchronous up and down motion of 62 upper piston rod 54 of sliding block, from the foregoing, it can be understood that the piston of constant displacement pump 2 is and 41 phase of main piston axis Connection, the piston rod 54 for having explained variable pump 5 herein is also connected with main piston pump 41, that is, realizes a driving motor 3 Driving slider component 6, which synchronizes, moves with above and below while driving constant displacement pump 2 and variable pump group 5a input or output raw material.

It is worth noting that, only explained a rotation mode of slide bar 61 in the present embodiment, i.e., 61 left end of slide bar is the Two articulated section 61a, right end are the first articulated section 61b, and the setting that sliding block 62 slides is in the second articulated section 61a and the first articulated section Between 61b, when main piston rod 41 drives the first articulated section 61b on right side to move upwards, sliding block 62 drive piston rod 54 synchronous to Upper movement, i.e. main piston rod 41 are identical as the direction of motion of piston rod 54；The right end that can also be slide bar 61 is the first articulated section It is ipsilateral that 61b, the second articulated section 61a are set to the first articulated section 61b, and such second articulated section 61a is that sliding block 62 slides with a left side Range, form the structure for being similar to wraping plate, the sliding block 62 when main piston rod 41 moves downward, positioned at 61 left side of slide bar 54 synchronous backward of piston rod is driven to move upwards, i.e., main piston rod 41 is opposite with the direction of motion of piston rod 54.

The type of the quantity of variable pump 5 liquid charging stock according to needed for machine and set, be preferred with 2, the present embodiment The specific structure of middle variable pump 5 are as follows: variable pump 5 is successively equipped with interconnected upper pump casing 51,52 and of middle pump body from top to bottom Lower pump body 53 is provided with piston rod 54 that can be up and down between, feed pipe 531, phase is communicated on lower pump body 53 Accordingly, discharge nozzle 511 is communicated on upper pump casing 51, be arranged between middle pump body 52 and lower pump body 53 restricted liquid charging stock only by Lower pump body 53 is delivered to the check valve 55 of upper pump casing 51, and check valve 55 includes spool 551 and valve block 552.When 3 work of driving motor Make, piston rod 54 moves upwards, and forms negative pressure inside the variable pump 5 of sealing, and under the action of pressure, raw material is from feed pipe 531 It is transported in variable pump 5, when piston rod 54 moves downward, positive pressure is formed inside the variable pump 5 of sealing, in the effect of pressure Under, spool 551 is pressed down against, and by the stifled jail of feed inlet, raw material can only be exported from discharge nozzle 511, be driven for spool 551 and valve block 552 Dynamic eccentric shaft 421 of the motor 3 with movable eccentric wheel 42 rotates, and eccentric shaft 421 rotates a circle, and variable pump 5 completes an input and output Period, above-mentioned shake rocking bar 612 can be realized that sliding block 62 is mobile, and the final purpose of the operation is by changing sliding block 62 logical The position of slot 611 is to change its spacing between the first articulated section 61b, the row that piston rod 54 adjustable in this way moves up and down Journey, and then regulate and control the flow of input or output liquid raw material.

Claims (10)

1. a kind of metering pump, including bracket (1), constant displacement pump (2), driving motor (3), Yi Jilian to drive constant displacement pump (2) Connect the transmission mechanism (4) of driving motor (3) and constant displacement pump (2), it is characterised in that: further include having variable pump group (5a), the change Amount pump group (5a) is connected on transmission mechanism (4) by slide bar component (6), and the transmission mechanism (4) can be in driving motor (3) Driving slider component (6), which synchronize, under acting on moves with above and below while driving constant displacement pump (2) and variable pump group (5a) input or defeated Raw material out.

2. metering pump according to claim 1, it is characterised in that: the slide bar component (6) includes being hinged on bracket (1) Slide bar (61) and the sliding block (62) that is slidably disposed on slide bar (61), the variable pump group (5a) includes at least one change Amount pump (5), described variable pump (5) one end are hinged on the bottom of bracket (1), and the other end is hinged on sliding block (62).

3. metering pump according to claim 2, it is characterised in that: the transmission mechanism (4) have can move above and below and with The both ends of the main piston axis (41) that constant displacement pump (2) internal piston is connected, the slide bar (61) are rotationally connected to bracket respectively (1) and on main piston axis (41), and the piston rod (54) of variable pump (5) can be driven to synchronize upper and lower movement with main piston axis (41).

4. metering pump according to claim 3, it is characterised in that: the slide bar (61) includes being hinged on main piston axis (41) It is upper and can with main piston axis (41) synchronous the first articulated section (61b) to move up and down, and be arranged the first articulated section (61b) outside Side and the second articulated section (61a) being hinged on bracket (1), first articulated section (61b) are hinged on main piston by pin shaft The lower end of axis (41).

5. metering pump according to claim 4, it is characterised in that: the sliding block (62) is slidably arranged in the second articulated section Between (61a) and the first articulated section (61b), the through slot through the slide bar (61) is offered on the length direction of the slide bar (61) (611), the sliding block (62) passes through and is slidably disposed in the through slot (611), is additionally provided with use on the through slot (611) To adjust the rocking bar (612) that sliding block (62) present position controls the flow of variable pump (5) in turn.

6. metering pump according to claim 5, it is characterised in that: the sliding block (62) includes that can fasten in through slot (611) The shoulder block (621) on upper edge and the interconnecting piece (622) by extending downwardly in the middle part of shoulder block (621) offer on the interconnecting piece (622) Convenient for the through-hole (623) being connected with variable pump (5).

7. metering pump according to claim 3, it is characterised in that: the transmission mechanism (4) further includes having and driving motor (3) output shaft is coaxially disposed and eccentric wheel (42) that main piston axis (41) can be driven to move above and below, the eccentric wheel (42) it is inclined Mandrel (421) is connected with the upper end of main piston axis (41).

8. metering pump according to claim 7, it is characterised in that: the eccentric wheel (42) connects by the way that support frame (7) are fixed It connects on bracket (1), being also fixedly connected on support frame as described above (7) can be set on main piston axis (41) and to support main work Fill in the orienting cover (71) of axis (41).

9. the metering pump according to any claim in claim 2~8, it is characterised in that: the variable pump (5) is from upper Successively be equipped with interconnected upper pump casing (51), middle pump body (52) and lower pump body (53) under and, the upper pump casing (51) and in Piston rod (54) that can be up and down is provided between the pump housing (52).

10. metering pump according to claim 9, it is characterised in that: be communicated with feed pipe on the lower pump body (53) (531), correspondingly, be communicated with discharge nozzle (511) on the upper pump casing (51), the middle pump body (52) and lower pump body (53) it Between the check valve (55) that restricted liquid charging stock is only delivered to upper pump casing (51) by lower pump body (53) is set.