CN215256715U - Novel duplex diaphragm pump - Google Patents

Abstract

The utility model discloses a novel duplex diaphragm pump, which comprises a pump body seat with a left water inlet cavity and a right water inlet cavity which are mutually communicated, an independent water outlet cavity which is respectively arranged in the water inlet cavity, an end cover which is covered on the pump body seat, a diaphragm seat which is attached to the bottom surface of the pump body seat and two extrusion parts which are arranged in the diaphragm seat, a driving seat which is buckled on the bottom surface of the diaphragm seat and is used for accommodating a driving piece which is required by the driving piece for driving the two extrusion parts to work, and a transmission device which is arranged between the driving piece and the two extrusion parts, the utility model aims to provide a duplex diaphragm pump which can respectively and independently drive any one pump body in two parallel pump bodies to work by using a single motor, when being applied to products, only one motor is needed to conveniently use any pump body to discharge water according to needs, and the corresponding conversion water outlet channel and an additional valve which are independently designed for switching the structure of the pump body are not needed to switch the outlet flow direction, simple structure, convenience and practicality.

Description

Novel duplex diaphragm pump

Technical Field

The utility model relates to a diaphragm pump field especially relates to a novel duplex diaphragm pump.

Background

The miniature electric diaphragm pump uses a miniature direct current motor as a power driving device to drive an internal mechanical eccentric device to do eccentric motion, and the eccentric motion drives an internal diaphragm to do reciprocating motion. Therefore, air in the pump cavity with the fixed volume is compressed (the air suction opening is closed during compression, the air exhaust opening is opened to form micro-positive pressure), stretched (the air exhaust opening is closed during compression, and the air suction opening is opened to form negative pressure), pressure difference is generated between the air suction opening and the external atmospheric pressure, and gas (or liquid) is pressed (sucked) into the pump cavity and then discharged from the air exhaust opening under the action of the pressure difference.

In addition, the micro vacuum pump, the micro air pump and the negative pressure pump are all diaphragm type, and because the air exhaust port or the air exhaust port can form pressure difference with the external atmosphere, simultaneously, the micro vacuum pump does not need lubricating oil and vacuum pump oil, does not pollute working media, and has the advantages of small volume, low noise, maintenance free, continuous 24-hour operation and the like, the micro vacuum pump is used as a power device, is widely applied to the occasions of gas sampling, gas circulation, vacuum adsorption, accelerated filtration, water pumping and the like, and is widely applied to the fields of medical treatment, health, scientific research, environmental protection, daily life and the like, such as a water dispenser, a coffee machine, a water purifier, an air purifier, a tea making machine, water circulation equipment, particularly the field of drinking water and the like, and is particularly favored.

However, when the pump is applied to a product, due to the requirement of designing and applying a structure, the position of a required water outlet changes along with the product, different requirements can be provided, the existing solutions are all provided with two pump bodies which are arranged in parallel, a motor corresponding to the requirement is installed under each pump body to drive the pump bodies, the two motors correspond to the two pump bodies, so that the cost is increased, the capacity is limited in production, the assembly process is increased, a corresponding complex control circuit needs to be designed in later product application, the volume of the product applied at the same time is increased, and the maintenance difficulty is very troublesome after the product is sold.

As such, there is a need for further improvements in existing dual pump body diaphragm pumps.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an use single motor can two independent drive respectively and ally oneself with novel pair diaphragm pump of arbitrary pump body work in arranging the pump body.

In order to achieve the above purpose, the utility model adopts the following scheme: a novel duplex diaphragm pump comprises a pump body seat, wherein a left water inlet cavity and a right water inlet cavity which are mutually communicated are formed on the upper end surface of the pump body seat in a concave manner, the water inlet cavities are respectively provided with an independent water outlet cavity and at least one water inlet flow channel which is respectively formed on the periphery of the water outlet cavity and vertically penetrates through the bottom surface of the water inlet cavity, and the water outlet cavities are respectively provided with a vertically penetrating water outlet flow channel; the end cover covers the pump body seat, the water inlet cavity and the water outlet cavity can form a closed hollow accommodating space respectively, the upper surface of the end cover is provided with a water inlet communicated with the water inlet cavity and water outlets communicated with the water outlet cavity respectively, and a shared water inlet and two independent water outlets are adopted, so that the arrangement of the water inlets is reduced, the cost is saved, and the structure is more reasonable; the valve body seat is attached to the bottom surface of the pump body seat, a self-suction valve body is respectively arranged in the valve body seat and corresponds to the lower parts of the two water inlet cavities, and the self-suction valve bodies are used for sucking liquid entering the water inlet cavities through the water inlet flow channels and then extruding the liquid from the water outlet flow channels through the corresponding water outlets; the driving seat is hollow and has an open top, is buckled on the bottom surface of the valve body seat, and is internally provided with a transmission device which can respectively and independently drive the two self-sucking valve bodies to work; the driving piece can drive the transmission device to rotate forwards in the forward rotation process so as to drive one of the self-suction valve bodies to work and can drive the transmission device to rotate backwards in the reverse rotation process so as to drive the other self-suction valve body to work, the driving piece is arranged on the driving seat, and the output end of the driving piece is connected with the transmission device.

As the utility model discloses a further scheme, from inhaling the valve body including setting up the leather cup pendulum rod in the leather cup bottom respectively leather cup pendulum rod bottom activity cover is equipped with and can drives each leather cup in proper order and produce the extrusion suction action, and then can get into liquid via in the intake cavity intake runner suction back, follow the outflow runner is through corresponding the piece that sways that the delivery port was extruded, transmission sets up two sway between the piece, and respectively with two it is connected alone to sway the piece.

As a further aspect of the utility model, it is including swaing the support to sway the support top do not be equipped with a plurality of can hold the corresponding male first through-hole in leather cup pendulum rod bottom sway support bottom center and be equipped with a connecting rod respectively connecting rod below activity cover is equipped with can by the rotatory eccentric sleeve of transmission drive runs through to have the ability to hold on this eccentric sleeve connecting rod male eccentric shaft hole correspond respectively in the drive seat sway the rotatable rotation axis that is equipped with in support below, the top of this rotation axis is fixed in the top and corresponds eccentric sleeve bottom, and is located one side in eccentric shaft hole.

As a further aspect of the present invention, the transmission device includes a pair of rotatable wheels respectively rotatably disposed at the top of the inner cavity of the driving seat and the bottom of the driving seat, a driving wheel driven by the driving member is disposed between the pair of rotatable wheels, and the pair of rotatable wheels respectively correspond to the driving wheel in the clockwise or counterclockwise direction and are independently connected to the pair of rotatable wheels to drive the clutch member, and the pair of rotatable wheels respectively correspond to the pair of rotatable wheels.

As a further proposal, the utility model is located drive seat inner chamber top the fixed first gear with the axle center that is equipped with on the just reversal wheel drive seat inner chamber bottom the fixed second gear with the axle center that is equipped with on the just reversal wheel is one of them be equipped with on the rotation axis of eccentric sleeve with the axle center with this rotation axis, and can with the first driven gear of first gear engaged with, another be equipped with on the rotation axis of eccentric sleeve with the axle center with this rotation axis, and can with the second driven gear of second gear engaged with.

As a further proposal of the utility model, the clutch part comprises a plurality of first one-way teeth which are fixedly formed on the bottom surface of the first gear and are sequentially arranged at intervals along the circumference and have one side as an inclined plane and one opposite side as an upright plane, and a plurality of second one-way teeth which are fixedly formed on the top surface of the second gear and are sequentially arranged at intervals along the circumference and have one side as an inclined plane and one opposite side as an upright plane, the inclined planes of the first one-way teeth and the second one-way teeth are opposite in orientation, at least one second through hole which vertically penetrates through the driving wheel is movably provided with a clutch pin which can vertically move in the second through hole and is columnar, the top and the bottom of the clutch pin are respectively provided with opposite inclined planes, wherein the inclined plane at the top of the clutch pin is mutually extruded with the inclined plane of the first one-way teeth so as to force the clutch pin to move downwards from the second through hole, therefore, the vertical surface of the bottom of the clutch pin and the vertical surface of the second one-way tooth are abutted against each other to drive the second gear to rotate, otherwise, the clutch pin moves upwards from the second through hole to drive the first gear to rotate, so that the problem that a single motor drives any one of two row pump bodies independently is solved effectively, the structure is simple, the assembly is convenient, and the production cost is reduced.

As the utility model discloses a further scheme, the driving piece including install in the motor of drive seat bottom wall and rotatable setting are in drive seat inner chamber bottom the center pin department of just reversing wheel and the second gear all runs through to be equipped with can hold the third through-hole that the output shaft of motor was worn out, wear out the output shaft of motor behind the third through-hole with the axle center fixed connection of drive wheel.

As a further aspect of the present invention, the diameter of the third through hole is larger than the diameter of the output shaft of the motor, and the outer wall surface of the output shaft of the motor does not contact the inner wall surface of the third through hole.

As a preferable proposal of the clutch piece of the utility model, the clutch piece comprises a first gear and a second gear which are fixedly formed on the bottom surface of the first gear, a plurality of first unidirectional teeth A which are sequentially arranged at intervals along the circumference and have one inclined surface and the opposite upright surface, and a plurality of second unidirectional teeth A which are fixedly formed on the top surface of the second gear, and a plurality of second unidirectional teeth A which are sequentially arranged at intervals along the circumference and have inclined surfaces at one side and vertical surfaces at the opposite side, the inclined surfaces of the first unidirectional teeth A and the second unidirectional teeth A face in opposite directions, the upper surface of the driving wheel is provided with at least one elastic piece A which has the same direction with the inclined surface of the first unidirectional tooth A and the end part of which can resist against the vertical surface of the first unidirectional tooth A, the lower surface of the driving wheel is provided with at least one elastic piece B which has the same direction with the inclined surface of the second unidirectional tooth A and the end part of which can be resisted on the vertical surface of the second unidirectional tooth A.

As a further proposal of the utility model, a sealing gasket is arranged between the pump body seat and the combining surface of the end cover.

To sum up, the utility model discloses for its beneficial effect of prior art is: the utility model discloses a clutch of ingenious design, just reversal wheel rotates about the drive respectively, and then make its eccentric sleeve that drives and be connected with it rotate, can be in the pump body of duplex row one of them pump body of independent control respectively and carry out the scheme of work, can reach when using in the product, only need a motor can be convenient use any one pump body to carry out the effect of going out water as required, need not to go out the water course because the structure of the pump body itself and the conversion that the independent design corresponds, for example when needing a plurality of exit positions, it switches over the export flow direction to need not to increase the valve, only need a simple motor switching-over circuit, can realize, the manufacturing cost and the volume of diaphragm pump itself and applied product have been reduced, and the equipment process, the degree of difficulty of later stage maintenance has effectively been reduced simultaneously.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is one of the cross-sectional views of the present invention.

Fig. 3 is a second cross-sectional view of the present invention.

Fig. 4 is an exploded view of the present invention.

Fig. 5 is a second exploded view of the present invention.

Fig. 6 is a third exploded view of the present invention.

Fig. 7 is an enlarged view at a in fig. 5.

Fig. 8 is a fourth exploded view of the present invention.

Fig. 9 is a fifth exploded view of the present invention.

Fig. 10 is a schematic view of another embodiment of a clutch member according to the present invention.

Detailed Description

The following detailed description provides many different embodiments or examples for implementing the invention. Of course, these are merely embodiments or examples and are not intended to be limiting. In addition, repeated reference numbers, such as repeated numbers and/or letters, may be used in various embodiments. These iterations are for simplicity and clarity of the description of the present invention and do not represent a particular relationship between the various embodiments and/or structures discussed.

Furthermore, spatially relative terms, such as "below" … "," below "," inside-out "," above "," upper "and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature during use or operation of the device, and may include different orientations of the device during use or operation of the device as illustrated in the figures. The device may be rotated 90 degrees or other orientations to different orientations and the spatially relative adjectives used therein may be similarly interpreted and, thus, should not be construed as limiting the invention, the terms "first", "second" are used merely for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings: a novel double diaphragm pump as shown in fig. 1 to 10 comprises, from top to bottom: the pump body seat 10 is formed by injection molding, a left water inlet cavity 11 and a right water inlet cavity 11 which are mutually communicated are formed on the upper end surface of the pump body seat 10 in a concave manner, an independent water outlet cavity 12 is respectively arranged in the two water inlet cavities 11, at least one water inlet runner 13 is respectively surrounded on the periphery of the corresponding water outlet cavity 12 and vertically penetrates through the bottom surface of the water inlet cavity 11, a vertically penetrating water outlet runner 14 is also respectively arranged in the two water outlet cavities 12, and the water outlet cavity 12 is formed on the bottom surface of the water inlet cavity 11 by a circular upward-protruding ring body in the embodiment; the pump body seat is characterized in that the pump body seat is covered with an end cover 20 formed by injection molding on the pump body seat 10, and a sealing gasket 2 is arranged between the combining surface of the pump body seat 10 and the end cover 20, the end cover 20 can enable the water inlet cavity 11 and the water outlet cavity 12 to respectively form a closed hollow accommodating space, the upper surface of the end cover 20 is provided with a water inlet 21 communicated with the water inlet cavity 11, and water outlets 22 respectively communicated with the two water outlet cavities 12; a valve body seat 30 which is attached to the bottom surface of the pump body seat 10 and is formed by injection molding is arranged, a self-priming valve body 31 is respectively arranged at the positions corresponding to the lower positions of the left water inlet cavity 11 and the right water inlet cavity 11 in the valve body seat 30, and the self-priming valve bodies 3 are used for extruding liquid entering the water inlet cavities 11 from the water outlet channels 14 after being pumped in through the water inlet channels 13 and discharging the liquid through the water outlet 22; the hollow driving seat 40 is opened at the top and is also formed by injection molding, the driving seat 40 is buckled on the bottom surface of the valve body seat 30, and a transmission device 50 which can respectively and independently drive the two self-sucking valve bodies 3 to work is arranged in the driving seat 40; wherein, the self-priming valve body 3 is a common diaphragm valve in the market, and the structure thereof includes a plurality of diaphragm chambers 31 which are respectively arranged in the valve body seat 30 corresponding to the left and right water inlet cavities 11, a plurality of extrusion members 32 are respectively embedded in each diaphragm chamber 31 and can extrude the liquid entering the water inlet cavity 11 out of the water outlet channel 14 after being deformed and pumped into the water inlet channel 13, a first soft valve sheet 15 which can dynamically block the water inlet channel 13 is respectively arranged at the outlet of each water inlet channel 13, the first soft valve sheet 15 is respectively arranged at the bottom of the pump body seat 10 corresponding to each water inlet channel 13, a second soft valve sheet 16 which can block the water outlet channel 14 is respectively arranged in the two water outlet cavities 12, the second soft valve sheet 16 is specifically arranged on the upper surface of the bottom of the inner cavity of the water outlet cavity 12, and the first soft valve sheet 15 and the second soft valve sheet 16 both need to completely cover the corresponding channels, it should be particularly noted that, when the extrusion element 32 draws in the liquid entering the water inlet cavity 11 through the water inlet flow channel 13, the first soft valve sheet 15 opens the corresponding water inlet flow channel 13, and the second soft valve sheet 16 closes the corresponding water outlet flow channel 14, and when the extrusion element 32 extrudes the drawn liquid through the water outlet flow channel 14, the first soft valve sheet 15 closes the water inlet flow channel 13, and the second soft valve sheet 16 opens the water outlet flow channel 14, that is, the first soft valve sheet 15 and the second soft valve sheet 16 are both one-way valve sheets, of course, such a structure is a conventional means in the prior art, and thus, the description is omitted; the driving part 60 is arranged on the driving seat 40, and the output end of the driving part 60 is connected with the transmission device 50, specifically, the driving part 60 is a motor 61 arranged at the bottom of the driving seat 40.

Referring to fig. 2, 3, 5 and 6, the extruding member 32 of the self-priming valve body 3 includes leather cups 321 movably embedded in the corresponding diaphragm chambers 31, the leather cups 321 in the diaphragm chambers 31 below the water inlet chamber 11 on one side are connected to each other, leather cup swing rods 323 are respectively fixed at the bottoms of the leather cups 321, swing members 33 capable of sequentially driving the leather cups 321 to generate extruding and pumping actions so as to reduce or increase the volume of the space in the diaphragm chambers 31 are movably sleeved at the bottoms of the leather cup swing rods 323, convex balls 3231 capable of being pressed by the swing members 33 are respectively fixed on the leather cup swing rods 323 and above the swing members 33, and the transmission device 50 is arranged between the two swing members 33 and is respectively connected to the two swing members 33.

Wherein, the swinging member 33 comprises an integrally formed swinging bracket 331, each leather cup swinging rod 323 corresponding to the upper part of the top of the swinging bracket 331 is respectively provided with a plurality of first through holes 332 capable of accommodating the bottom ends of the corresponding leather cup swinging rods 323 to be inserted correspondingly, the center of the bottom of the swinging bracket 331 is respectively provided with a connecting rod 333, an eccentric shaft sleeve 334 capable of being driven to rotate by the transmission device 50 is movably sleeved below the connecting rod 333, an eccentric shaft hole 3341 capable of accommodating the connecting rod 333 to be inserted is penetrated through the eccentric shaft sleeve 334, a rotating shaft seat 401 is fixedly arranged in the driving seat 40 corresponding to the lower part of each swinging bracket 331 respectively, a rotating shaft 3342 is rotatably and vertically arranged on the rotating shaft seat 401, the top end of the rotating shaft 3342 is fixed at the bottom of the corresponding eccentric shaft sleeve 334 corresponding to the upper part and is positioned at one side of the eccentric shaft hole 3341, so that when the eccentric shaft sleeve 334 rotates by taking the rotating shaft 3342 as the axis, the connecting rod 333 generates eccentric motion, and since the upper cup 321 is limited in the diaphragm chamber 31 and does not generate displacement, the swing bracket 331 below the connecting rod will generate a swing effect, and at this time, each cup 321 is driven by the swing bracket 331 to sequentially generate an action of being extruded and deformed, so as to change the volume of the space in the cup 321, thereby generating a pumping action, and completing the effects of pumping in the liquid entering the water inlet cavity 11 through the water inlet flow channel 13 and extruding the pumped liquid through the water outlet flow channel 14.

It should be noted that, as shown in fig. 2 to fig. 9, it can be clearly seen that the transmission device 50 includes forward and reverse rotating wheels 51 rotatably disposed at the top and the bottom of the inner cavity of the driving seat 40, wherein the forward and reverse rotating wheels 51 at the top of the inner cavity of the driving seat 40 are snap-fitted by a snap-fit column 402 with a circular protrusion at an end portion formed by extending downward from the top of the inner cavity of the driving seat 40, the forward and reverse rotating wheels 51 at the top of the inner cavity of the driving seat 40 rotate around the snap-fit column 402 (specifically, it can be understood with reference to fig. 3), and the forward and reverse rotating wheels 51 at the bottom of the inner cavity of the driving seat 40 are snap-fitted by a snap-fit platform 403 with a cavity inside formed by protruding upward from the bottom of the inner cavity of the driving seat 40 (specifically, please refer to fig. 3), a second gear 522 having the same axis is fixed to the forward and reverse rotation wheels 51 positioned at the bottom of the inner cavity of the driving holder 40, a first driven gear 34 having the same axis as the rotating shaft 3342 and capable of meshing with the first gear 511 is fixed to the rotating shaft 3342 of one (left side in the drawing) of the eccentric bushings 334, a second driven gear 35 having the same axis as the rotating shaft 3342 and capable of meshing with the second gear 522 is fixed to the rotating shaft 3342 of the other (right side in the drawing), the two forward and reverse rotation wheels 51 are respectively connected to the first and second driven gears 34 and 35 respectively corresponding to the left and right eccentric bushings 334 through the first and second gears 511 and 522 respectively corresponding thereto, a driving wheel 52 capable of being driven and rotated by a driving member 60 is provided between the forward and reverse rotation wheels 51, and the driving wheel 52 is provided with the forward and reverse rotation wheels 51 respectively corresponding to the upper and lower sides at the time of the forward and reverse rotation, thereby driving the clutch member 53 to rotate.

In this embodiment, there are two embodiments of the clutch 53, and as shown in fig. 2 to 9, a first embodiment of the clutch 53 is shown: the clutch mechanism comprises a plurality of first one-way teeth 5111 which are fixedly formed on the bottom surface of the first gear 511, are sequentially arranged at intervals along the circumference, have an inclined surface on one side facing the rotating direction and an upright surface on the opposite side, a plurality of second one-way teeth 5222 which are fixedly formed on the top surface of the second gear 522, are sequentially arranged at intervals along the circumference, have an inclined surface on one side facing the rotating direction and an upright surface on the opposite side, the inclined surfaces of the first one-way teeth 5111 and the second one-way teeth 5222 are opposite, the rotating directions of the first one-way teeth 5111 and the second one-way teeth 5222 are also opposite, and at least one second through hole 521 which penetrates through the driving wheel 52 up and down, in the embodiment, by taking one example, a clutch pin 531 which can move up and down in a column shape in the second through hole 521 is movably arranged in the second through hole, and the top and the bottom of the clutch pin 531 are respectively provided with opposite inclined surfaces, in the above, the inclined surface at the top of the clutch pin 531 and the inclined surface of the first one-way tooth 5111 are pressed against each other to force the clutch pin 531 to move downward from the second through hole 521, so that the vertical surface at the bottom of the clutch pin 531 and the vertical surface of the second one-way tooth 5222 abut against each other to drive the second gear 522 to rotate, otherwise the clutch pin 531 moves upward from the second through hole 521 to drive the first gear 511 to rotate, because the top and the bottom of the clutch pin 531 have opposite inclined surfaces, and the inclined surface at the upper end of the clutch pin 531 and the inclined surface of the corresponding adjacent first one-way tooth 5111 are in the same direction, and the inclined surface at the lower end of the clutch pin 531 and the adjacent second one-way tooth 5222 are in the same direction, when the driving wheel 52 is driven by the motor 61 to rotate clockwise, the inclined surface at the lower end of the clutch pin 531 is pressed by the inclined surface of the second one-way tooth 5222, the clutch pin 531 is caused to keep moving upward, at this time, the vertical surface of the clutch pin 531 abuts against the vertical surface of the first one-way tooth 5111, the first gear 511 where the first one-way tooth 5111 is located is driven to rotate, the eccentric shaft sleeve 334 located on the left side in the drawing starts to operate, the leather cup 321 in the diaphragm chamber 31 on the left side starts to perform suction and extrusion actions to pump water, and conversely, when the motor 61 rotates counterclockwise by changing the rotation direction of the motor 61, the leather cup 321 in the diaphragm chamber 31 on the right side in the drawing starts to perform suction and extrusion actions to pump water. Of course, since the output shaft of the motor 61 passes through the bottom wall surface of the driving seat 40 and the center shafts of the forward and reverse rotation wheel 51 and the second gear 522 rotatably disposed at the bottom of the inner cavity of the driving seat 40 and is fixedly connected to the driving wheel 52, a third through hole 62 penetrates through the bottom wall surface of the driving seat 40 and the center shafts of the forward and reverse rotation wheel 51 and the second gear 522 disposed at the bottom of the inner cavity of the driving seat 40 from bottom to top, the diameter of the third through hole 62 is larger than that of the output shaft of the motor 61, and the outer wall surface of the output shaft of the motor 61 does not contact the inner wall surface of the third through hole 62, so that the output shaft of the motor 61 does not affect the second gear 522, and finally, the end of the output shaft of the motor 61 is fixedly connected to the center shaft of the driving wheel 52.

Fig. 10 shows a second embodiment of the clutch 53: it can be seen from the figures that the present embodiment is basically the same as the first embodiment, and only differs from the first embodiment in the clutch pin 531, and specifically includes a plurality of first one-way teeth a 5111A fixedly formed on the bottom surface of the first gear 511 and arranged at intervals along the circumference, each having an inclined surface on one side and an upright surface on the opposite side, and a plurality of second one-way teeth a 5222A fixedly formed on the top surface of the second gear 522 and arranged at intervals along the circumference, each having an inclined surface on one side and an upright surface on the opposite side, wherein the inclined surfaces of the first one-way teeth a 5111A and the second one-way teeth a 5222A face in opposite directions, and thus the structure is basically the same as that of the first embodiment, and the key point is that: at least one elastic piece A531A which has the same direction as the inclined plane of the first one-way tooth A5111A and the end part of which can be resisted on the vertical plane of the first one-way tooth A5111A is arranged on the upper surface of the driving wheel 52, at least one elastic piece B531B which has the same direction as the inclined plane of the second one-way tooth A5222A and the end part of which can be resisted on the vertical plane of the second one-way tooth A5222A is arranged on the lower surface of the driving wheel 52, the elastic piece A531A and the elastic piece B531B are in two opposite and upside down '. understandings' shapes in the embodiment, the elastic piece A531A and the elastic piece B531B are both made of metal materials, the first one-way tooth A5111A and the second one-way tooth A5222A are both made of plastic materials, the consumption of friction between the two different materials can be reduced, the service life can be prolonged, the elastic piece A531A and the elastic piece B531B are arranged in the same way as the inclined plane of the clutch pin 531 in the first embodiment, only the elastic pieces a531A and B531B have elasticity, so that when they are driven by the driving wheel 52 to rotate and have two adjacent inclined surfaces to press, the elastic pieces will deform and bend downward, and the end portions will push the vertical surfaces of the upper and lower unidirectional teeth to drive the corresponding counter-rotating wheels 51 to rotate.

So far, the effectual work of having solved two antithetical couplet row pump bodies of single motor independent control respectively of the structure combination that describes in the above-mentioned embodiment need not to change the flow direction because what traditional diaphragm pump structure caused needs independent design change-over valve again, need not to use two motors to control respectively yet, and simple structure is worth promoting.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only illustrative of the principles of the present invention, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and changes fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A novel duplex diaphragm pump is characterized in that: the pump comprises a pump body seat (10), wherein a left water inlet cavity (11) and a right water inlet cavity (11) which are communicated with each other are formed on the upper end surface of the pump body seat (10) in a concave manner, an independent water outlet cavity (12) is respectively arranged in the water inlet cavities (11), at least one water inlet flow channel (13) which is respectively formed on the periphery of the water outlet cavity (12) and vertically penetrates through the bottom surface of the water inlet cavity (11) is respectively provided in the water outlet cavity (12), and a vertically penetrating water outlet flow channel (14) is also respectively provided in the water outlet cavity (12); the end cover (20) covers the pump body seat (10), the water inlet cavity (11) and the water outlet cavity (12) can form a closed hollow accommodating space respectively, and the upper surface of the end cover (20) is provided with a water inlet (21) communicated with the water inlet cavity (11) and a water outlet (22) communicated with the water outlet cavity (12); the valve body seat (30) is attached to the bottom surface of the pump body seat (10), a self-suction valve body (3) is arranged in the valve body seat (30) and respectively corresponds to the lower parts of the two water inlet cavities (11), and the self-suction valve body (3) is used for sucking liquid entering the water inlet cavities (11) through the water inlet flow channel (13) and then extruding the liquid from the water outlet flow channel (14) through the corresponding water outlet (22); the driving seat (40) is hollow, the top of the driving seat is open, the driving seat (40) is buckled on the bottom surface of the valve body seat (30), and a transmission device (50) capable of respectively and independently driving the two self-sucking valve bodies (3) to work is arranged in the driving seat (40); the driving piece (60) can drive the transmission device (50) to rotate forwards in the forward rotation process so as to drive one of the self-suction valve bodies (3) to work, and can drive the transmission device (50) to rotate backwards in the reverse rotation process so as to drive the other self-suction valve body (3) to work, the driving piece (60) is arranged on the driving seat (40), and the output end of the driving piece is connected with the transmission device (50).

2. The novel double diaphragm pump according to claim 1, wherein the self-priming valve body (3) comprises cup oscillating bars (323) respectively disposed at bottoms of the cups (321), a swinging member (33) is movably sleeved at the bottoms of the cup oscillating bars (323) and can sequentially drive the cups (321) to generate squeezing and pumping actions, so that liquid entering the water inlet cavity (11) can be pumped into the water inlet channel (13) and then extruded out of the water outlet channel (14) through the corresponding water outlet (22), and the transmission device (50) is disposed between the two swinging members (33) and is separately connected with the two swinging members (33).

3. The novel double diaphragm pump according to claim 2, wherein the swinging member (33) comprises a swinging bracket (331), a plurality of first through holes (332) are respectively formed at the top of the swinging bracket (331) for allowing the bottom end of the cup swing link (323) to be correspondingly inserted, a connecting rod (333) is respectively formed at the center of the bottom of the swinging bracket (331), an eccentric bushing (334) capable of being driven by the transmission device (50) to rotate is movably sleeved below the connecting rod (333), an eccentric shaft hole (3341) capable of allowing the connecting rod (333) to be inserted is formed in the eccentric bushing (334) in a penetrating manner, a rotating shaft (3342) is rotatably arranged in the driving seat (40) corresponding to the lower part of each swinging bracket (331), and the top end of the rotating shaft (3342) is fixed at the bottom of the corresponding eccentric bushing (334) above, and is positioned at one side of the eccentric shaft hole (3341).

4. The novel duplex diaphragm pump according to claim 3, wherein the transmission device (50) comprises a forward and reverse rotating wheel (51) rotatably disposed at the top and the bottom of the inner cavity of the driving seat (40), a driving wheel (52) capable of driving the forward and reverse rotating wheel (51) to rotate via a driving member (60) is disposed between the forward and reverse rotating wheel (51), the driving wheel (52) is provided with a clutch member (53) capable of independently connecting with the corresponding forward and reverse rotating wheel (51) up and down during forward rotation or reverse rotation, and further driving the forward and reverse rotating wheel (51) to rotate, and the forward and reverse rotating wheel (51) is respectively connected with the corresponding left and right eccentric bushings (334).

5. The novel tandem diaphragm pump according to claim 4, wherein a first gear (511) having the same axle center is fixedly arranged on the forward and reverse rotation wheel (51) positioned at the top of the inner cavity of the driving seat (40), a second gear (522) having the same axle center is fixedly arranged on the forward and reverse rotation wheel (51) positioned at the bottom of the inner cavity of the driving seat (40), a first driven gear (34) having the same axle center as the rotation shaft (3342) and capable of being meshed with the first gear (511) is arranged on the rotation shaft (3342) of one of the eccentric bushings (334), and a second driven gear (35) having the same axle center as the rotation shaft (3342) and capable of being meshed with the second gear (522) is arranged on the rotation shaft (3342) of the other eccentric bushing (334).

6. The novel tandem diaphragm pump according to claim 5, wherein the clutch member (53) comprises a plurality of first one-way teeth (5111) fixedly formed on the bottom surface of the first gear (511) and arranged at intervals along the circumference, each of the first one-way teeth having an inclined surface at one side and an upright surface at the opposite side, and a plurality of second one-way teeth (5222) fixedly formed on the top surface of the second gear (522) and arranged at intervals along the circumference, each of the second one-way teeth having an inclined surface at one side and an upright surface at the opposite side, the inclined surfaces of the first one-way teeth (5111) and the second one-way teeth (5222) are opposite in orientation, at least one second through hole (521) vertically penetrates the driving wheel (52), a clutch pin (531) movably arranged in the second through hole (521) and capable of moving up and down in the second through hole (521) to form a column, and the top and bottom of the clutch pin (531) are respectively provided with opposite inclined surfaces, the inclined surface at the top of the clutch pin (531) and the inclined surface of the first one-way tooth (5111) are mutually extruded to force the clutch pin (531) to move downwards from the second through hole (521), so that the vertical surface at the bottom of the clutch pin (531) and the vertical surface of the second one-way tooth (5222) are mutually abutted, the second gear (522) is driven to rotate, and otherwise, the clutch pin (531) moves upwards from the second through hole (521), and the first gear (511) is driven to rotate.

7. The novel duplex diaphragm pump according to claim 5 or 6, wherein the driving member (60) comprises a motor (61) installed at the bottom of the driving seat (40), a third through hole (62) capable of allowing an output shaft of the motor (61) to penetrate out is formed in the bottom wall surface of the driving seat (40) and the central axis of the forward and reverse rotating wheel (51) and the central axis of the second gear (522) rotatably arranged at the bottom of the inner cavity of the driving seat (40) in a penetrating manner, and the output shaft of the motor (61) penetrates out of the third through hole (62) and then is fixedly connected with the axis of the driving wheel (52).

8. The novel double diaphragm pump according to claim 7, wherein the diameter of the third through hole (62) is larger than the diameter of the output shaft of the motor (61), and the outer wall surface of the output shaft of the motor (61) does not contact the inner wall surface of the third through hole (62).

9. A novel twin diaphragm pump according to claim 5, wherein the clutch member (53) comprises a plurality of first unidirectional teeth A (5111A) having an inclined surface on one side and an upright surface on the opposite side, which are fixedly formed on the bottom surface of the first gear (511), and a plurality of second unidirectional teeth A (5222A) having an inclined surface on one side and an upright surface on the opposite side, which are fixedly formed on the top surface of the second gear (522), which are sequentially arranged at intervals along the circumference, wherein the inclined surfaces of the first unidirectional teeth A (5111A) and the second unidirectional teeth A (5222A) face opposite directions, and the upper surface of the driving wheel (52) is provided with at least one elastic piece A (531) having the same direction as the inclined surface of the first unidirectional teeth A (5111A) and an end capable of abutting against the upright surface of the first unidirectional teeth A (5111A), the lower surface of the driving wheel (52) is provided with at least one elastic piece B (531B) which has the same direction with the inclined surface of the second one-way tooth A (5222A) and the end part of which can be resisted on the vertical surface of the second one-way tooth A (5222A).

10. A novel twin diaphragm pump according to claim 1, characterised in that a sealing gasket (2) is also provided between the joint surfaces of the pump body seat (10) and the end cap (20).

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