阅读说明：本技术 防滴漏水泵 (Drip-proof water pump ) 是由 向连玉 刘育军 于 2020-08-18 设计创作，主要内容包括：本发明公开了一种防滴漏水泵,包括隔膜泵体、泵头、密封件及弹性件,隔膜泵体用于吸入或排出流体,泵头设于隔膜泵体上方,泵头具有用以吸入流体的吸入通道和排出流体的排出通道；密封件设于隔膜泵体与泵头之间,密封件与隔膜泵体之间共同限定出隔离腔,密封件与泵头之间共同限定出与排出通道相连通的中转腔；弹性件设于隔离腔内与密封件相抵贴,以弹性推动密封件在自然状态下将排出通道封闭；当流体被隔膜泵体排出进入中转腔时,密封件被流体挤压以克服弹性件弹力朝向隔膜泵体方向形变,以使排出通道被打开并排出流体。该防滴漏水泵在停止运转时可以防止排出通道产生滴漏,密封效果更好,在运转时流体排出过程顺畅稳定,整体结构稳定可靠。(The invention discloses an anti-drip water pump, which comprises a diaphragm pump body, a pump head, a sealing element and an elastic element, wherein the diaphragm pump body is used for sucking or discharging fluid; the sealing element is arranged between the diaphragm pump body and the pump head, an isolation cavity is defined between the sealing element and the diaphragm pump body, and a transfer cavity communicated with the discharge channel is defined between the sealing element and the pump head; the elastic piece is arranged in the isolation cavity and abutted against the sealing piece so as to elastically push the sealing piece to seal the discharge channel in a natural state; when the fluid is discharged into the transfer cavity by the diaphragm pump body, the sealing element is pressed by the fluid to overcome the elastic force of the elastic element and deform towards the diaphragm pump body, so that the discharge channel is opened and the fluid is discharged. The drip-proof water pump can prevent the discharge channel from producing drip leakage when the water pump stops running, has better sealing effect, and has smooth and stable fluid discharge process and stable and reliable integral structure when the water pump runs.)

1. An anti-drip pump, comprising:

a diaphragm pump body for sucking or discharging fluid;

a pump head disposed above the diaphragm pump body, the pump head having a suction passage for sucking the fluid and a discharge passage for discharging the fluid;

the sealing element is arranged between the diaphragm pump body and the pump head, an isolation cavity is defined between the sealing element and the diaphragm pump body, and a transfer cavity communicated with the discharge channel is defined between the sealing element and the pump head;

the elastic piece is arranged in the isolation cavity and abuts against the sealing piece so as to elastically push the sealing piece to seal the discharge channel in a natural state;

when the fluid is discharged from the diaphragm pump body and enters the relay chamber, the seal member is pressed by the fluid to deform toward the diaphragm pump body against the elastic force of the elastic member, so that the discharge passage is opened and the fluid is discharged.

2. The drip-proof water pump according to claim 1, wherein the sealing member has a sealing portion disposed corresponding to the discharge passage, the sealing portion having a circumferential direction formed with an annular connection portion having a thickness smaller than that of the sealing portion, the annular connection portion being deformed to cause the sealing portion to close or open the discharge passage when the sealing portion is pushed by the elastic member or the fluid.

3. The drip resistant pump of claim 1, wherein the diaphragm pump body comprises:

the top of the middle rotary seat is fixed with the sealing element, a first convex step and a groove positioned on the outer periphery of the first convex step are arranged on the top of the middle rotary seat, the sealing element is provided with a through hole arranged corresponding to the first convex step and a second convex step positioned on the outer periphery of the through hole, and when the sealing element is sealed and fixed with the middle rotary seat, the first convex step is embedded with the through hole and the second convex step is embedded with the groove;

the diaphragm seat is arranged below the middle rotating seat, a plurality of diaphragm pieces are arranged on the diaphragm seat, and each diaphragm piece is provided with a pump chamber;

the diaphragm cover is arranged between the diaphragm seat and the middle rotating seat, a middle rotating groove communicated with the through hole is formed in the center of the top of the diaphragm cover, a middle rotating hole is formed in the middle rotating groove, and the middle rotating hole is communicated in a one-way mode from the pump chamber to the middle rotating groove;

and the first inlet grooves are positioned in the circumferential direction of the transit grooves and correspond to the pump chambers one by one, a plurality of first inlet holes are formed in each first inlet groove, and the first inlet holes are communicated with the pump chambers in a one-way mode from the first inlet grooves.

4. The drip-proof water pump of claim 3, wherein the top of the middle rotating base is provided with a second inlet groove, and a plurality of second inlet holes are formed in the second inlet groove and correspond to the first inlet grooves in a one-to-one manner;

the sealing element is provided with a third inlet hole, the second inlet groove and the suction channel are communicated with each other through the third inlet hole, and the third inlet hole is not communicated with the transfer cavity.

5. The drip-proof water pump according to claim 4, wherein the middle rotating base is provided with an air release hole communicating with the isolation chamber, an extension groove is formed at the bottom of the middle rotating base to connect one of the second inlet holes with the air release hole, and when the sealing member deforms toward the middle rotating base, air in the isolation chamber is discharged through the air release hole and the extension groove.

6. The drip resistant pump of claim 4 wherein said first step defines a drain opening that is not in communication with said isolation chamber and said second intake groove, said drain opening communicating said transfer groove with said transfer chamber.

7. The drip resistant pump of claim 3, wherein the diaphragm pump body further comprises:

the valve plate is arranged between the middle rotating seat and the diaphragm cover and provided with a profiling hole matched with the first inlet grooves, and the valve plate is used for mutually isolating gaps between the middle rotating groove and the first inlet grooves;

the plurality of the umbrella T-shaped valves are respectively arranged in the plurality of the first inlet grooves and are used for respectively controlling the unidirectional conduction of the plurality of the first inlet holes;

and the one-way valve is arranged in the transit groove and used for controlling the transit hole to be communicated in one way.

8. The drip resistant pump of claim 1, wherein said pump head has a flange on a side thereof adjacent said seal, said flange isolating said intake passage from said transfer chamber when said pump head is secured to said seal.

9. The drip-proof water pump according to claim 1, further comprising a driving assembly, wherein the driving assembly comprises a driving motor, an eccentric driving member and a receptacle, the eccentric driving member is connected to the diaphragm pump body, the receptacle is disposed below the diaphragm pump body for receiving the eccentric driving member, and an output shaft of the driving motor extends into the receptacle and is connected to the eccentric driving member for driving the eccentric driving member to move circularly.

10. The drip resistant pump of claim 9, wherein the eccentric drive member comprises a wobble frame and an eccentric, the wobble frame being coupled to the diaphragm pump body, the eccentric being coupled to the output shaft of the drive motor on one side and to the wobble frame on the other side.

Technical Field

The invention relates to the technical field of pumps, in particular to an anti-drip water pump.

Background

The pump makes the interior of the pump do reciprocating motion through an internal mechanical device, vacuum or negative pressure can be continuously formed at the suction nozzle, and positive pressure is formed at the exhaust nozzle; the working medium is mainly gas or liquid and is mainly used in household appliances and medical equipment. The existing micro water pump easily causes the leakage of the discharge channel when the operation is stopped, and the sealing effect of the discharge channel is not good.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the invention is to propose an anti-drip pump comprising:

a diaphragm pump body for sucking or discharging fluid;

a pump head disposed above the diaphragm pump body, the pump head having a suction passage for sucking the fluid and a discharge passage for discharging the fluid;

the sealing element is arranged between the diaphragm pump body and the pump head, an isolation cavity is defined between the sealing element and the diaphragm pump body, and a transfer cavity communicated with the discharge channel is defined between the sealing element and the pump head;

the elastic piece is arranged in the isolation cavity and abuts against the sealing piece so as to elastically push the sealing piece to seal the discharge channel in a natural state;

when the fluid is discharged from the diaphragm pump body and enters the relay chamber, the seal member is pressed by the fluid to deform toward the diaphragm pump body against the elastic force of the elastic member, so that the discharge passage is opened and the fluid is discharged.

Preferably, according to an embodiment of the present invention, the sealing member has a sealing portion disposed corresponding to the discharge passage, the sealing portion having a circumferential direction formed with an annular connecting portion having a thickness smaller than that of the sealing portion, the annular connecting portion being deformed to cause the sealing portion to close or open the discharge passage when the sealing portion is pushed by the elastic member or the fluid.

Preferably, according to one embodiment of the invention, the diaphragm pump body comprises:

the top of the middle rotary seat is fixed with the sealing element, a first convex step and a groove positioned on the outer periphery of the first convex step are arranged on the top of the middle rotary seat, the sealing element is provided with a through hole arranged corresponding to the first convex step and a second convex step positioned on the outer periphery of the through hole, and when the sealing element is sealed and fixed with the middle rotary seat, the first convex step is embedded with the through hole and the second convex step is embedded with the groove;

the diaphragm seat is arranged below the middle rotating seat, a plurality of diaphragm pieces are arranged on the diaphragm seat, and each diaphragm piece is provided with a pump chamber;

the diaphragm cover is arranged between the diaphragm seat and the middle rotating seat, a middle rotating groove communicated with the through hole is formed in the center of the top of the diaphragm cover, a middle rotating hole is formed in the middle rotating groove, and the middle rotating hole is communicated in a one-way mode from the pump chamber to the middle rotating groove;

and the first inlet grooves are positioned in the circumferential direction of the transit grooves and correspond to the pump chambers one by one, a plurality of first inlet holes are formed in each first inlet groove, and the first inlet holes are communicated with the pump chambers in a one-way mode from the first inlet grooves.

Preferably, according to an embodiment of the present invention, the top of the middle rotating base has a second entering groove, and a plurality of second entering holes are formed in the second entering groove, wherein the second entering holes are arranged in one-to-one correspondence with the first entering grooves;

the sealing element is provided with a third inlet hole, the second inlet groove and the suction channel are communicated with each other through the third inlet hole, and the third inlet hole is not communicated with the transfer cavity.

Preferably, according to an embodiment of the present invention, the middle rotating base is provided with an air release hole communicated with the isolation cavity, an extension groove is formed at a bottom of the middle rotating base to connect one of the second inlet holes with the air release hole, and when the sealing member deforms toward the direction of the middle rotating base, air in the isolation cavity is discharged through the air release hole and the extension groove.

Preferably, according to an embodiment of the present invention, the first step is provided with a discharge hole which is not communicated with the isolation chamber and the second inlet groove, and the discharge hole communicates the transfer groove with the transfer chamber.

Preferably, according to an embodiment of the present invention, the diaphragm pump body further comprises:

the valve plate is arranged between the middle rotating seat and the diaphragm cover and provided with a profiling hole matched with the first inlet grooves, and the valve plate is used for mutually isolating gaps between the middle rotating groove and the first inlet grooves;

the check valves are respectively arranged in the first inlet grooves and are used for respectively controlling the unidirectional conduction of the first inlet holes;

and the umbrella valve is arranged in the transit groove and used for controlling the transit hole to be communicated in a one-way mode.

Preferably, according to an embodiment of the present invention, a side of the pump head adjacent to the sealing member has a flange, and when the pump head is fixed to the sealing member, the flange blocks the suction passage from the relay chamber.

Preferably, according to an embodiment of the present invention, the diaphragm pump further includes a driving assembly, the driving assembly includes a driving motor, an eccentric driving member and a receptacle, the eccentric driving member is connected to the diaphragm pump, the receptacle is disposed below the diaphragm pump for receiving the eccentric driving member, and an output shaft of the driving motor extends into the receptacle and is connected to the eccentric driving member to drive the eccentric driving member to move circularly.

Preferably, according to one embodiment of the invention, the eccentric drive comprises a wobble frame and an eccentric, the wobble frame being connected to the diaphragm pump body, the eccentric being connected on one side to an output shaft of the drive motor and on the other side to the wobble frame.

According to the drip-proof water pump provided by the invention, when the water pump stops running, the elastic piece can elastically push the sealing piece to generate certain deformation, so that the sealing piece can seal the discharge channel of the pump head, the discharge channel can be prevented from generating drip leakage, and the sealing effect is better; when the diaphragm pump body inhales fluid and compresses, the fluid of compressed is discharged into the transfer chamber by the diaphragm pump body for the pressure that the fluid produced can overcome the elasticity of elastic component and promote the sealing member and produce deformation, thereby open discharge passage and discharge fluid, the fluid discharge process is more smooth and easy stable, and overall structure is reliable and stable.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an anti-drip pump provided in an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a drip resistant pump provided in an embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the drip resistant pump of the present invention;

FIG. 4 is an exploded view of the pump head, seal and central swivel mount provided in an embodiment of the present invention;

FIG. 5 is an exploded view of the pump head, seal and transfer seat of an embodiment of the present invention;

fig. 6 is an exploded view of the diaphragm pump body and the driving assembly provided in the embodiment of the present invention.

The reference numbers illustrate:

10. a diaphragm pump body; 101. a middle transposable; 1011. a first convex step; 1012. a groove; 1013. a discharge hole; 1014. a second entry slot; 1015. a second inlet orifice; 1016. an air release hole; 1017. an extension groove; 102. a diaphragm seat; 103. a diaphragm cover; 1031. a first entry slot; 1032. a first inlet orifice; 1033. a transit trough; 1034. a transit hole; 104. a diaphragm member; 105. a valve plate; 1051. profiling a hole; 106. a mitre valve; 107. a one-way valve; 20. a pump head; 201. a suction channel; 202. a discharge passage; 203. a flange; 30. a seal member; 301. a sealing part; 302. an annular connecting portion; 303. a through hole; 304. a second convex step; 305. a third access hole; 40. an elastic member; 50. a drive assembly; 501. a drive motor; 502. an eccentric drive; 5021. an eccentric wheel; 5022. a swing frame; 503. an accommodating seat; p10, isolation chamber; p20, transit chamber.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present invention and should not be construed as limiting the present invention, and all other embodiments that can be obtained by one skilled in the art based on the embodiments of the present invention without inventive efforts shall fall within the scope of protection of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

An anti-drip pump according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, an embodiment of the present invention provides an anti-drip pump, including a diaphragm pump body 10, a pump head 20, a sealing member 30, and an elastic member 40, wherein the diaphragm pump body 10 is used for sucking or discharging a fluid, the pump head 20 is disposed above the diaphragm pump body 10, and the pump head 20 has a suction channel 201 for sucking the fluid and a discharge channel 202 for discharging the fluid; the sealing element 30 is arranged between the diaphragm pump body 10 and the pump head 20, the sealing element 30 and the diaphragm pump body 10 jointly define an isolation cavity P10, and the sealing element 30 and the pump head 20 jointly define a transfer cavity P20 communicated with the discharge channel 202; the elastic member 40 is disposed in the isolation chamber P10 and abuts against the sealing member 30 to elastically push the sealing member 30 to close the discharge passage 202 in a natural state; when the fluid is discharged by the diaphragm pump body 10 and enters the transfer chamber P20, the seal member 30 is pressed by the fluid to be deformed toward the diaphragm pump body 10 against the elastic force of the elastic member 40, so that the discharge passage 202 is opened and the fluid is discharged.

According to the drip-proof water pump provided by the invention, when the water pump stops running, the elastic piece 40 can elastically push the sealing piece 30 to generate certain deformation, so that the sealing piece can seal the discharge channel 202 of the pump head 20, therefore, the discharge channel 202 can be prevented from generating dripping, and the sealing effect is better; when the diaphragm pump body 10 sucks fluid to compress, the compressed fluid is discharged into the transfer cavity P20 by the diaphragm pump body 10, so that the pressure generated by the fluid can overcome the elastic force of the elastic element 40 and push the sealing element 30 to deform, the discharge channel 202 is opened to discharge the fluid, the fluid discharge process is smoother and more stable, and the whole structure is stable and reliable.

Referring to fig. 3 to 5, the sealing member 30 has a sealing portion 301 disposed corresponding to the discharge passage 202, the sealing portion 301 has a circumferential direction formed with an annular connecting portion 302, the annular connecting portion 302 has a thickness smaller than that of the sealing portion 301, and when the sealing portion 301 is pushed by the elastic member 40 or the fluid, the annular connecting portion 302 is deformed to cause the sealing portion 301 to close or open the discharge passage 202.

In the embodiment of the present invention, the sealing member 30 may be made of rubber, so that the sealing effect is better, and when the elastic member 40 pushes, the sealing member 30 may be attached to the pump head 20, so that the sealing member 30 may seal the discharge passage 202 more tightly; preferably, the thickness of the annular connecting portion 302 is smaller than that of the sealing portion 301, so that an annular groove is formed at the position of the annular connecting portion 302, when the fluid enters the transfer chamber P20, the fluid can enter the position of the annular connecting portion 302, so that the pressure of the fluid can push the annular connecting portion 302 to deform toward the diaphragm pump body 10, and meanwhile, the sealing portion 301 can deflect toward the diaphragm pump body 10, so that the discharge passage 202 is opened and the fluid is discharged; when the water pump stops operating, the fluid in the discharge passage 202 is evacuated to generate a certain negative pressure, and meanwhile, the elastic part 40 can elastically push the sealing part 301, so that the sealing part 301 stretches the annular connecting part 302 to generate deformation and seal the discharge passage 202, and therefore the discharge passage 202 can be quickly closed, and the sealing effect is better.

Specifically, the diaphragm pump body 10 includes a middle rotary base 101, a diaphragm base 102 and a diaphragm cover 103, the top of the middle rotary base 101 is fixed to the sealing element 30, the top of the middle rotary base 101 is provided with a first convex step 1011 and a groove 1012 located on the outer periphery of the first convex step 1011, the sealing element 30 is provided with a through hole 303 corresponding to the first convex step 1011 and a second convex step 304 located on the outer periphery of the through hole 303, when the sealing element 30 is sealed and fixed to the middle rotary base 101, the first convex step 1011 is embedded in the through hole 303, and the second convex step 304 is embedded in the groove 1012; the diaphragm seat 102 is arranged below the middle rotating seat 101, a plurality of diaphragm pieces 104 are arranged on the diaphragm seat 102, and each diaphragm piece 104 is provided with a pump chamber; the diaphragm cover 103 is arranged between the diaphragm seat 102 and the transfer seat 101, a transfer groove 1033 communicated with the through hole 303 is arranged at the center of the top of the diaphragm cover 103, a transfer hole 1034 is arranged in the transfer groove 1033, and the transfer hole 1034 is communicated with the transfer groove 1033 in a one-way manner from the pump chamber; and first inlet grooves 1031 located in the circumferential direction of the transfer groove 1033 and corresponding to the plurality of pump chambers one by one, each of the first inlet grooves 1031 having a plurality of first inlet holes 1032 formed therein, the plurality of first inlet holes 1032 conducting unidirectionally from the first inlet grooves 1031 to the pump chambers.

Further, the top of the transfer seat 101 has a second entering groove 1014, and a plurality of second entering holes 1015 arranged in one-to-one correspondence to the first entering grooves 1031 are formed in the second entering groove 1014; the sealing member 30 is provided with a third inlet hole 305, the third inlet hole 305 connects the second inlet groove 1014 and the suction passage 201, and the third inlet hole 305 and the transfer chamber P20 are not communicated with each other.

Further, the first step 1011 is provided with a discharge hole 1013 which does not communicate with the partition chamber P10 and the second entry groove 1014, and the discharge hole 1013 communicates the transfer groove 1033 with the transfer chamber P20.

As shown in fig. 2, the arrows in fig. 2 show the flowing direction of the fluid, the fluid enters the pump chamber from the suction passage 201, the third inlet hole 305, the second inlet groove 1014, the second inlet hole 1015, the first inlet groove 1031 and the first inlet hole 1032 in sequence to be compressed, the compressed fluid enters the transfer chamber P20 from the pump chamber, the transfer hole 1034, the transfer groove 1033 and the outlet hole 1013 in sequence and is discharged from the discharge passage 202, the transfer chamber P20 is not communicated with the third inlet hole 305 during the entering of the fluid, the fluid directly enters the second inlet groove 1014 through the third inlet hole 305 from the suction passage 201, the second inlet groove 1014 is not communicated with the outlet hole 1013 and the isolation chamber P10, and therefore the fluid directly enters the first inlet groove 1031 from the second inlet hole 1015 in the second inlet groove 1014 and enters the pump chamber in one way through the first inlet hole 1032 to be compressed; when the compressed fluid is discharged, the fluid in the pump chamber flows into the transfer groove 1033 from the pump chamber through the first inlet hole 1032 in one direction, because the first convex step 1011 is engaged with the through hole 303, the fluid directly flows into the transfer chamber P20 from the transfer groove 1033 through the discharge hole 1013, and the sealing part 301 is pressed to open the discharge passage 202 and then discharged, so that the whole operation is stable and reliable, and the sealing performance is better.

Referring to fig. 4 and 5, the middle rotating base 101 is provided with an air release hole 1016 mutually communicated with the isolation chamber P10, the bottom of the middle rotating base 101 is provided with an extension groove 1017 to connect one of the second inlet holes 1015 with the air release hole 1016, and when the sealing member 30 deforms towards the middle rotating base 101, air in the isolation chamber P10 is discharged through the air release hole 1016 and the extension groove 1017.

In the present embodiment, when the discharge passage 202 is opened, the sealing portion 301 is biased toward the isolation chamber P10 and pushes the air in the isolation chamber P10, so that the air in the isolation chamber P10 can be discharged from the air release hole 1016, the sealing portion 301 is opened more smoothly, and since the extension groove 1017 is provided at the bottom of the middle rotary seat 101, the fluid does not enter the isolation chamber P10 from the extension groove 1017 when the fluid enters the second entry groove 1014, and the opening and closing of the discharge passage 202 by the sealing portion 301 is simpler and more stable.

Referring to fig. 2 and 6, the diaphragm pump body 10 further includes a valve plate 105, a plurality of umbrella valves 106 and a one-way valve 107, the valve plate 105 is disposed between the middle rotating base 101 and the diaphragm cover 103 and has a profiling hole 1051 adapted to the first entering groove 1031, and the valve plate 105 is used for isolating gaps between the middle rotating groove 1033 and the first entering grooves 1031 from each other; the plurality of the pilfer valves 106 are respectively disposed in the plurality of first inlet slots 1031 to respectively control the plurality of first inlet holes 1032 to conduct in one direction; the check valve 107 is disposed in the transfer groove 1033 and is used for controlling the transfer hole 1034 to conduct in a single direction.

The valve plate 105 can prevent the sucked fluid from penetrating into the outside or being sucked into the transfer groove 1033, so that the sealing performance between the transfer seat 101 and the diaphragm cover 103 is better, and the fluid entering from the second inlet hole 1015 can enter the first inlet groove 1031 through the profiling hole 1051 and cannot enter the transfer groove 1033; the slit valve 106 disposed in the first inlet groove 1031 can push the slit valve 106 to move toward the pump chamber when the fluid enters the first inlet groove 1031, then open the first inlet hole 1032 to allow the fluid to enter the pump chamber, when the fluid is compressed in the pump chamber, the slit valve 106 moves away from the pump chamber, and then the first inlet hole 1032 is closed, thereby preventing the fluid from flowing back into the first inlet groove 1031, and simultaneously the fluid can push the check valve 107 to move away from the pump chamber and open the transfer hole 1034 to allow the fluid to enter the transfer groove 1033 and enter the transfer chamber P20 from the outlet hole 1013, thereby enabling the fluid to be more stably and smoothly delivered.

Referring to fig. 5, the pump head 20 has a flange 203 on the side thereof adjacent the seal member 30, such that when the pump head 20 is secured to the seal member 30, the flange 203 separates the intake passage 201 from the transfer chamber P20. The sealing element 30 may also be disposed in a groove corresponding to the flange 203, so that the flange 203 may be embedded in the groove to separate the suction passage 201 and the transfer cavity P20 from each other, thereby achieving better separation effect and stronger sealing performance.

Referring to fig. 6, the driving assembly 50 further includes a driving assembly 50, the driving assembly 50 includes a driving motor 501, an eccentric driving member 502 and a receptacle 503, the eccentric driving member 502 is connected to the diaphragm pump body 10, the receptacle 503 is disposed below the diaphragm pump body 10 for receiving the eccentric driving member 502, and an output shaft of the driving motor 501 extends into the receptacle 503 and is connected to the eccentric driving member 502 for driving the eccentric driving member 502 to move circularly.

Further, the eccentric driving member 502 includes a swing frame 5022 and an eccentric 5021, the swing frame 5022 is connected to the diaphragm pump body 10, one side of the eccentric 5021 is connected to an output shaft of the driving motor 501, and the other side is connected to the swing frame 5022.

In the embodiment of the invention, the swing frame 5022 is connected with the diaphragm 104, and when the driving motor 501 drives the eccentric 5021 to rotate, the eccentric 5021 can drive the swing frame 5022 to swing, so that the swing frame 5022 compresses or stretches the diaphragm 104 to compress and discharge fluid entering the pump chamber, and therefore the fluid is circulated to move, and the continuous and stable operation of the whole body is ensured.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.