Anti-drip water pump

Abstract

The present invention discloses an anti-drip water pump, comprising a diaphragm pump body, a pump head, a sealing member and an elastic member. The diaphragm pump body is used to inhale or discharge fluid. The pump head is arranged above the diaphragm pump body, and the pump head has an inhalation channel for inhaling fluid and a discharge channel for discharging fluid. The sealing member is arranged between the diaphragm pump body and the pump head, and the sealing member and the diaphragm pump body jointly define an isolation chamber, and the sealing member and the pump head jointly define a transfer chamber connected to the discharge channel. The elastic member is arranged in the isolation chamber and abuts against the sealing member, and elastically pushes the sealing member to close the discharge channel in a natural state. When the fluid is discharged by the diaphragm pump body into the transfer chamber, the sealing member is squeezed by the fluid to overcome the elastic force of the elastic member and deform toward the diaphragm pump body, so that the discharge channel is opened and the fluid is discharged. The anti-drip water pump can prevent dripping in the discharge channel when it stops running, and the sealing effect is better. During operation, the fluid discharge process is smooth and stable, and the overall structure is stable and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of pumps, and in particular to an anti-drip water pump. Background Art

[0002] The pump uses an internal mechanical device to make the pump do reciprocating motion, and can continuously form a vacuum or negative pressure at the suction nozzle and a positive pressure at the exhaust nozzle; the working medium is mainly gas or liquid, and it is mainly used in household appliances and medical equipment. Existing micro water pumps are prone to dripping in the discharge channel when they stop running, and the sealing effect of the discharge channel is not good. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide an anti-drip water pump, comprising:

[0004] A diaphragm pump body, used to suck in or discharge fluid;

[0005] A pump head is arranged above the diaphragm pump body, and the pump head has a suction channel for sucking the fluid and a discharge channel for discharging the fluid;

[0006] A sealing member is disposed between the diaphragm pump body and the pump head, wherein the sealing member and the diaphragm pump body together define an isolation cavity, and the sealing member and the pump head together define a transfer cavity connected to the discharge channel;

[0007] An elastic member, disposed in the isolation cavity and in contact with the sealing member, elastically pushing the sealing member to close the discharge channel in a natural state;

[0008] When the fluid is discharged from the diaphragm pump body and enters the transfer chamber, the sealing member is squeezed by the fluid to overcome the elastic force of the elastic member and deform toward the diaphragm pump body, so that the discharge channel is opened and the fluid is discharged.

[0009] Preferably, according to an embodiment of the present invention, the sealing member has a sealing portion arranged corresponding to the discharge channel, and an annular connecting portion is formed in the circumferential direction of the sealing portion, and the thickness of the annular connecting portion is smaller than the thickness of the sealing portion, and when the sealing portion is pushed by the elastic member or the fluid, the annular connecting portion is deformed so that the sealing portion closes or opens the discharge channel.

[0010] Preferably, according to one embodiment of the present invention, the diaphragm pump body comprises:

[0011] A transfer seat, wherein the top of the transfer seat is fixed to the sealing member, and the top of the transfer seat is provided with a first convex step and a groove located at the outer periphery of the first convex step, the sealing member has a through hole arranged corresponding to the first convex step and a second convex step located at the outer periphery of the through hole, and when the sealing member is sealed and fixed to the transfer seat, the first convex step is engaged with the through hole and the second convex step is engaged with the groove;

[0012] A diaphragm seat is arranged below the transfer seat, and the diaphragm seat has a plurality of diaphragm members, each of which has a pump chamber;

[0013] A diaphragm cover is arranged between the diaphragm seat and the transfer seat, a transfer groove connected to the through hole is arranged at the center of the top of the diaphragm cover, a transfer hole is arranged in the transfer groove, and the transfer hole is unidirectionally conductive from the pump chamber to the transfer groove;

[0014] And a first entry groove located in the circumferential direction of the transfer groove and corresponding to the plurality of pump chambers one by one, each of the first entry grooves is provided with a plurality of first entry holes, and the plurality of first entry holes are unidirectionally conductive from the first entry groove to the pump chamber.

[0015] Preferably, according to an embodiment of the present invention, the top of the intermediate transfer seat has a second entry groove, and the second entry groove is provided with a plurality of second entry holes arranged one-to-one corresponding to the first entry grooves;

[0016] The sealing member is provided with a third inlet hole, the third inlet hole connects the second inlet groove and the suction channel to each other, and the third inlet hole and the transfer chamber are not connected to each other.

[0017] Preferably, according to an embodiment of the present invention, the transfer seat is provided with an air leakage hole interconnected with the isolation chamber, and an extension groove is provided at the bottom of the transfer seat to connect one of the second entry holes with the air leakage hole, and when the seal is deformed toward the transfer seat, the air in the isolation chamber is discharged through the air leakage hole and the extension groove.

[0018] Preferably, according to an embodiment of the present invention, the first convex step is provided with a discharge hole which is not communicated with the isolation cavity and the second entry groove, and the discharge hole connects the transfer groove and the transfer cavity to each other.

[0019] Preferably, according to one embodiment of the present invention, the diaphragm pump body further comprises:

[0020] A valve plate, disposed between the transfer seat and the diaphragm cover and having a contoured hole adapted to the first inlet groove, the valve plate being used to separate the gaps between the transfer groove and a plurality of the first inlet grooves from each other;

[0021] A plurality of one-way valves are respectively disposed in the plurality of the first inlet grooves, and are used to respectively control the plurality of the first inlet holes to be one-way conductive;

[0022] The umbrella valve is arranged in the transfer groove and is used to control the one-way conduction of the transfer hole.

[0023] Preferably, according to an embodiment of the present invention, the pump head has a flange on a side close to the sealing member, and when the pump head is fixed to the sealing member, the flange separates the suction channel and the transfer chamber from each other.

[0024] Preferably, according to one embodiment of the present invention, it also includes a driving component, which includes a driving motor, an eccentric driving member and a receiving seat, the eccentric driving member is connected to the diaphragm pump body, the receiving seat is arranged below the diaphragm pump body to accommodate the eccentric driving member, and the output shaft of the driving motor extends into the receiving seat and is connected to the eccentric driving member to drive the eccentric driving member to circulate.

[0025] Preferably, according to an embodiment of the present invention, the eccentric driving member includes a swing frame and an eccentric wheel, the swing frame is connected to the diaphragm pump body, one side of the eccentric wheel is connected to the output shaft of the drive motor, and the other side is connected to the swing frame.

[0026] The anti-drip water pump provided by the present invention has a function that, when the water pump stops running, the elastic member can elastically push the sealing member to produce a certain deformation, so that it can close the discharge channel of the pump head, thereby preventing the discharge channel from dripping and achieving a better sealing effect; when the diaphragm pump body sucks in fluid for compression, the compressed fluid is discharged into the transfer chamber by the diaphragm pump body, so that the pressure generated by the fluid can overcome the elastic force of the elastic member and push the sealing member to deform, thereby opening the discharge channel to discharge the fluid, and the fluid discharge process is smoother and more stable, and the overall structure is stable and reliable.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 is a schematic structural diagram of an anti-drip water pump provided in an embodiment of the present invention;

[0030] Figure 2 is a partial cross-sectional view of an anti-drip water pump provided in an embodiment of the present invention;

[0031] Figure 3 is a structural exploded view of an anti-drip water pump provided in an embodiment of the present invention;

[0032] Figure 4 is a structural exploded view of a pump head, a seal and a transfer seat provided in an embodiment of the present invention;

[0033] Figure 5 is another structural exploded view of the pump head, the seal and the intermediate transfer seat provided in an embodiment of the present invention;

[0034] Figure 6 It is a structural exploded view of the diaphragm pump body and the drive assembly provided in an embodiment of the present invention.

[0035] Description of Figure Numbers:

[0036] 10. Diaphragm pump body; 101. Transfer seat; 1011. First convex step; 1012. Groove; 1013. Discharge hole; 1014. Second entry slot; 1015. Second entry hole; 1016. Vent hole; 1017. Extension slot; 102. Diaphragm seat; 103. Diaphragm cover; 1031. First entry slot; 1032. First entry hole; 1033. Transfer slot; 1034. Transfer hole; 104. Diaphragm member; 105. Valve plate; 1051. Profile hole; 106. Umbrella Ding valve; 107, one-way valve; 20, pump head; 201, suction channel; 202, discharge channel; 203, flange; 30, sealing member; 301, sealing portion; 302, annular connecting portion; 303, through hole; 304, second convex step; 305, third inlet hole; 40, elastic member; 50, drive assembly; 501, drive motor; 502, eccentric drive member; 5021, eccentric wheel; 5022, swing frame; 503, receiving seat; P10, isolation chamber; P20, transfer chamber.

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] The anti-drip water pump according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] Reference Figure 1 and Figure 2As shown, the anti-drip water pump provided in the embodiment of the present invention includes a diaphragm pump body 10, a pump head 20, a sealing member 30 and an elastic member 40. The diaphragm pump body 10 is used to inhale or discharge fluid. The pump head 20 is arranged above the diaphragm pump body 10. The pump head 20 has an inhalation channel 201 for inhaling fluid and a discharge channel 202 for discharging fluid. The sealing member 30 is arranged between the diaphragm pump body 10 and the pump head 20. The sealing member 30 and the diaphragm pump body 10 jointly define an isolation cavity P10. The sealing member 30 and the diaphragm pump body 10 are sealed. The component 30 and the pump head 20 jointly define a transfer chamber P20 connected to the discharge channel 202; the elastic component 40 is arranged in the isolation chamber P10 and abuts against the sealing component 30, so as to elastically push the sealing component 30 to close the discharge channel 202 in a natural state; when the fluid is discharged by the diaphragm pump body 10 and enters the transfer chamber P20, the sealing component 30 is squeezed by the fluid to overcome the elastic force of the elastic component 40 and deform toward the diaphragm pump body 10, so that the discharge channel 202 is opened and the fluid is discharged.

[0045] The anti-drip water pump provided by the present invention has the function of elastically pushing the sealing member 30 to produce a certain deformation when the water pump stops running, so that the sealing member 30 can close the discharge channel 202 of the pump head 20, thereby preventing the discharge channel 202 from dripping and achieving a better sealing effect; when the diaphragm pump body 10 sucks in fluid for compression, the compressed fluid is discharged into the transfer chamber P20 by the diaphragm pump body 10, so that the pressure generated by the fluid can overcome the elastic force of the elastic member 40 and push the sealing member 30 to deform, thereby opening the discharge channel 202 to discharge the fluid, and the fluid discharge process is smoother and more stable, and the overall structure is stable and reliable.

[0046] Reference Figures 3 to 5 As shown, the sealing member 30 has a sealing portion 301 arranged corresponding to the discharge channel 202, and an annular connecting portion 302 is formed in the circumferential direction of the sealing portion 301. The thickness of the annular connecting portion 302 is less than the thickness of the sealing portion 301. When the sealing portion 301 is pushed by the elastic member 40 or the fluid, the annular connecting portion 302 is deformed so that the sealing portion 301 closes or opens the discharge channel 202.

[0047] In an embodiment of the present invention, the sealing member 30 can be made of rubber material, which has a better sealing effect, and when the elastic member 40 pushes, the sealing member 30 can be tightly attached to the pump head 20, so that the sealing member 30 can seal the discharge channel 202 more tightly; preferably, the thickness of the annular connecting portion 302 is less than the thickness of the sealing portion 301, so that an annular groove is formed at the position of the annular connecting portion 302, and 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 toward the diaphragm pump body 10 to deform, and at the same time, the sealing portion 301 can be offset toward the diaphragm pump body 10, so that the discharge channel 202 is opened and the fluid is discharged; when the water pump stops running, the fluid in the discharge channel 202 is emptied and a certain negative pressure will be generated. At the same time, the elastic member 40 can elastically push the sealing portion 301, so that the sealing portion 301 stretches the annular connecting portion 302 to deform and seal the discharge channel 202, thereby allowing the discharge channel 202 to be quickly closed and the sealing effect is better.

[0048] Specifically, the diaphragm pump body 10 includes a transfer seat 101, a diaphragm seat 102 and a diaphragm cover 103. The top of the transfer seat 101 is fixed to the seal 30, and the top of the transfer seat 101 is provided with a first convex step 1011 and a groove 1012 located at the outer periphery of the first convex step 1011. The seal 30 has a through hole 303 corresponding to the first convex step 1011 and a second convex step 304 located at the outer periphery of the through hole 303. When the seal 30 is sealed and fixed to the transfer seat 101, the first convex step 1011 is engaged with the through hole 303 and the second convex step 304 is engaged with the groove 1012. The diaphragm seat 102 is arranged below the transfer seat 101, and the diaphragm seat 102 is arranged below the transfer seat 101. 2 has a plurality of diaphragm members 104, each of which has a pump chamber; a diaphragm cover 103 is arranged between the diaphragm seat 102 and the transfer seat 101, a transfer groove 1033 connected to 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 unidirectionally connected from the pump chamber to the transfer groove 1033; and first entry grooves 1031 are located in the circumferential direction of the transfer groove 1033 and correspond to the plurality of pump chambers one by one, each of the first entry grooves 1031 is provided with a plurality of first entry holes 1032, and the plurality of first entry holes 1032 are unidirectionally connected from the first entry groove 1031 to the pump chamber.

[0049] Furthermore, the top of the transfer seat 101 has a second entry groove 1014, and the second entry groove 1014 is provided with a plurality of second entry holes 1015 corresponding to the first entry groove 1031 one by one; wherein, the seal 30 has a third entry hole 305, and the third entry hole 305 connects the second entry groove 1014 with the suction channel 201, and the third entry hole 305 is not connected with the transfer chamber P20.

[0050] Furthermore, the first convex step 1011 is provided with a discharge hole 1013 which is not communicated with the isolation cavity P10 and the second inlet groove 1014 , and the discharge hole 1013 connects the transfer groove 1033 and the transfer cavity P20 to each other.

[0051] Combination Figure 2 As shown, Figure 2 The arrows in the figure show the flow direction of the fluid. The fluid enters the pump chamber from the suction channel 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 for compression. The compressed fluid enters the transfer chamber P20 from the pump chamber, the transfer hole 1034, the transfer groove 1033 and the discharge hole 1013 and is discharged from the discharge channel 202. During the process of the fluid entering, the transfer chamber P20 and the third inlet hole 305 are not connected to each other. The fluid directly enters the second inlet groove 1014 from the suction channel 201 through the third inlet hole 305. The second inlet groove 101 4 is not connected with the discharge hole 1013 and the isolation chamber P10, so 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 unidirectionally through the first inlet hole 1032 for compression; 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 unidirectionally. Since the first convex step 1011 and the through hole 303 are embedded, the fluid directly enters the transfer chamber P20 from the transfer groove 1033 through the discharge hole 1013, and squeezes the sealing part 301 to open the discharge channel 202 and then is discharged. The overall operation is stable and reliable, and the sealing performance is better.

[0052] Reference Figure 4 and Figure 5 As shown, the transfer seat 101 is provided with an air leakage hole 1016 interconnected with the isolation chamber P10, and an extension groove 1017 is opened at the bottom of the transfer seat 101 to connect one of the second entry holes 1015 with the air leakage hole 1016. When the seal 30 is deformed toward the transfer seat 101, the air in the isolation chamber P10 is discharged through the air leakage hole 1016 and the extension groove 1017.

[0053] In this embodiment, when the exhaust channel 202 is opened, the sealing portion 301 is offset 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 vent hole 1016, and the sealing portion 301 opens more smoothly. Moreover, since the extension groove 1017 is arranged at the bottom of the transfer seat 101, when the fluid enters the second inlet groove 1014, the fluid will not enter the isolation chamber P10 from the extension groove 1017, and the sealing portion 301 opens and closes the exhaust channel 202 more simply and stably.

[0054] Reference Figure 2 and Figure 6As shown, the diaphragm pump body 10 also includes a valve plate 105, a plurality of umbrella valves 106 and a one-way valve 107. The valve plate 105 is arranged between the transfer seat 101 and the diaphragm cover 103 and has a contoured hole 1051 adapted to the first inlet groove 1031. The valve plate 105 is used to separate the gaps between the transfer groove 1033 and the plurality of first inlet grooves 1031 from each other; the plurality of umbrella valves 106 are respectively arranged in the plurality of first inlet grooves 1031 to respectively control the one-way conduction of the plurality of first inlet holes 1032; the one-way valve 107 is arranged in the transfer groove 1033 to control the one-way conduction of the transfer hole 1034.

[0055] 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 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 contoured hole 1051 and will not enter the transfer groove 1033; the umbrella valve 106 arranged in the first inlet groove 1031 can push the umbrella valve 106 to move toward the pump chamber when the fluid enters the first inlet groove 1031, and then open the valve 106. The first inlet hole 1032 is opened to allow the fluid to enter the pump chamber. When the fluid is compressed in the pump chamber, the umbrella valve 106 moves in the direction away from the pump chamber, and then closes the first inlet hole 1032, thereby preventing the fluid from flowing back into the first inlet groove 1031. At the same time, the fluid can push the one-way valve 107 to move in the direction away from the pump chamber and open the transfer hole 1034, so that the fluid enters the transfer groove 1033 and enters the transfer cavity P20 from the discharge hole 1013, thereby making the fluid delivery more stable and smooth.

[0056] Reference Figure 5 As shown, the pump head 20 has a flange 203 on one side close to the seal 30. When the pump head 20 and the seal 30 are fixed, the flange 203 separates the suction channel 201 from the transfer chamber P20. The seal 30 can also be set in a groove corresponding to the flange 203, so that the flange 203 can be embedded in the groove to separate the suction channel 201 and the transfer chamber P20 from each other, and the separation effect is better and the sealing is stronger.

[0057] Reference Figure 6 As shown, it also includes a driving component 50, which includes a driving motor 501, an eccentric driving member 502 and a receiving seat 503. The eccentric driving member 502 is connected to the diaphragm pump body 10, and the receiving seat 503 is arranged below the diaphragm pump body 10 to receive the eccentric driving member 502. The output shaft of the driving motor 501 extends into the receiving seat 503 and is connected to the eccentric driving member 502 to drive the eccentric driving member 502 to circulate.

[0058] Furthermore, the eccentric driving member 502 includes a swing frame 5022 and an eccentric wheel 5021 . The swing frame 5022 is connected to the diaphragm pump body 10 . One side of the eccentric wheel 5021 is connected to the output shaft of the driving motor 501 , and the other side is connected to the swing frame 5022 .

[0059] In an embodiment of the present invention, the swing frame 5022 is connected to the diaphragm member 104. When the driving motor 501 drives the eccentric wheel 5021 to rotate, the eccentric wheel 5021 can drive the swing frame 5022 to swing, so that the swing frame 5022 compresses or stretches the diaphragm member 104 to compress and discharge the fluid entering the pump chamber, thereby performing a cycle movement to ensure the overall continuous and stable operation.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A drip-proof water pump, characterized in that: include: A diaphragm pump body, used to suck in or discharge fluid; A pump head is arranged above the diaphragm pump body, and the pump head has a suction channel for sucking the fluid and a discharge channel for discharging the fluid; A sealing member is disposed between the diaphragm pump body and the pump head, wherein the sealing member and the diaphragm pump body together define an isolation cavity, and the sealing member and the pump head together define a transfer cavity connected to the discharge channel; An elastic member, disposed in the isolation cavity and in contact with the sealing member, elastically pushing the sealing member to close the discharge channel in a natural state; When the fluid is discharged by the diaphragm pump body and enters the transfer chamber, the sealing member is squeezed by the fluid to overcome the elastic force of the elastic member and deform toward the diaphragm pump body, so that the discharge channel is opened and the fluid is discharged; The sealing member has a sealing portion corresponding to the discharge channel, an annular connecting portion is formed in the circumferential direction of the sealing portion, the thickness of the annular connecting portion is smaller than the thickness of the sealing portion, and when the sealing portion is pushed by the elastic member or the fluid, the annular connecting portion is deformed so that the sealing portion closes or opens the discharge channel; The diaphragm pump body comprises: A transfer seat, wherein the top of the transfer seat is fixed to the sealing member, and the top of the transfer seat is provided with a first convex step and a groove located at the outer periphery of the first convex step, the sealing member has a through hole arranged corresponding to the first convex step and a second convex step located at the outer periphery of the through hole, and when the sealing member is sealed and fixed to the transfer seat, the first convex step is engaged with the through hole and the second convex step is engaged with the groove; A diaphragm seat is arranged below the transfer seat, and the diaphragm seat has a plurality of diaphragm members, each of which has a pump chamber; A diaphragm cover is arranged between the diaphragm seat and the transfer seat, a transfer groove connected to the through hole is arranged at the center of the top of the diaphragm cover, a transfer hole is arranged in the transfer groove, and the transfer hole is unidirectionally conductive from the pump chamber to the transfer groove; And a first entry groove located in the circumferential direction of the transfer groove and corresponding to the plurality of pump chambers one by one, each of the first entry grooves is provided with a plurality of first entry holes, and the plurality of first entry holes are unidirectionally conductive from the first entry groove to the pump chamber.

2. The anti-drip water pump according to claim 1, characterized in that: The top of the intermediate transfer seat is provided with a second entry groove, and the second entry groove is provided with a plurality of second entry holes which are arranged one-to-one corresponding to the first entry grooves; The sealing member is provided with a third inlet hole, the third inlet hole connects the second inlet groove and the suction channel to each other, and the third inlet hole and the transfer chamber are not connected to each other.

3. The anti-drip water pump according to claim 2, characterized in that: The transfer seat is provided with an air leakage hole interconnected with the isolation chamber, and an extension groove is provided at the bottom of the transfer seat to connect one of the second inlet holes with the air leakage hole. When the seal is deformed toward the transfer seat, the air in the isolation chamber is discharged through the air leakage hole and the extension groove.

4. The anti-drip water pump according to claim 2, characterized in that: The first convex step is provided with a discharge hole which is not communicated with the isolation cavity and the second entry groove, and the discharge hole connects the transfer groove and the transfer cavity.

5. The anti-drip water pump according to claim 1, characterized in that: The diaphragm pump body also includes: A valve plate, disposed between the transfer seat and the diaphragm cover and having a contoured hole adapted to the first inlet groove, the valve plate being used to separate the gaps between the transfer groove and a plurality of the first inlet grooves from each other; A plurality of umbrella valves are respectively disposed in the plurality of the first inlet grooves, and are used to respectively control the plurality of the first inlet holes to be unidirectionally conductive; A one-way valve is arranged in the transfer groove and is used to control the one-way conduction of the transfer hole.

6. The anti-drip water pump according to claim 1, characterized in that: The pump head has a flange on one side close to the sealing member. When the pump head is fixed to the sealing member, the flange separates the suction channel and the transfer chamber from each other.

7. The anti-drip water pump according to claim 1, characterized in that: It also includes a driving component, which includes a driving motor, an eccentric driving component and a receiving seat. The eccentric driving component is connected to the diaphragm pump body. The receiving seat is arranged below the diaphragm pump body to receive the eccentric driving component. The output shaft of the driving motor extends into the receiving seat and is connected to the eccentric driving component to drive the eccentric driving component to circulate.

8. The anti-drip water pump according to claim 7, characterized in that: The eccentric driving member comprises a swing frame and an eccentric wheel. The swing frame is connected to the diaphragm pump body. One side of the eccentric wheel is connected to the output shaft of the driving motor, and the other side is connected to the swing frame.

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