Drip-proof diaphragm pump

Abstract

The utility model discloses a leak-proof diaphragm pump, it includes reset part, deformable flow control element, pressurization part, pump head and transfer seat, pump head and pressurization part are respectively installed on the opposite two sides of transfer seat, the fluid inlet of pump head is communicated with the first channel of transfer seat, the fluid inlet of pump head is communicated with the first channel of transfer seat, and the fluid outlet of pump head is communicated with the second channel of transfer seat. The first flow channel of the pump head part is communicated with the second channel of the transfer seat, the balance groove of the transfer seat is sealed by the flow control element, and the whole circumferential direction of the flow control element is clamped by the pump head part and the transfer seat; the reset part is arranged in the balance groove of the transfer base in a deformable mode in the mode that the two opposite ends abut against the flow control element and the transfer base respectively, and all the peripheral through holes of the pressurization part are constructed to be capable of communicating all the pressurization cavities of the pressurization part with the distribution groove of the transfer base. And each group of middle through holes of the pressurizing part is constructed into a second channel capable of communicating each pressurizing cavity with the transfer seat.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, and particularly relates to an anti-drip diaphragm pump. Background Art

[0002] A diaphragm pump is a device widely used in household appliances and medical equipment for pumping gas or liquid. It has a fluid inlet and a fluid outlet. During operation, a continuous negative pressure is generated at the fluid inlet of the pump to suck gas or liquid into the interior of the diaphragm pump and discharge it from the fluid outlet of the diaphragm pump, thereby realizing the change of the position of the gas or liquid. Limited by the particularity of the gas or liquid, the diaphragm pump in the prior art is prone to the problem of dripping of the pumped gas or liquid. Summary of the Utility Model

[0003] An object of the utility model is to provide an anti-drip diaphragm pump, wherein the anti-drip diaphragm pump has good sealing performance and can effectively solve the problem of dripping at the fluid inlet of the pump head.

[0004] An object of the utility model is to provide an anti-drip diaphragm pump, wherein the anti-drip diaphragm pump can stably pump out fluid.

[0005] An object of the utility model is to provide an anti-drip diaphragm pump, wherein when the anti-drip diaphragm pump is not working, the anti-drip diaphragm pump can prevent a gap from being generated between the flow control element of the diaphragm part and the transfer seat, thereby avoiding fluid from entering the balance groove of the transfer seat and effectively solving the problem of dripping at the fluid inlet of the pump head.

[0006] An object of the utility model is to provide an anti-drip diaphragm pump, wherein the entire circumferential direction of the flow control element of the diaphragm part is clamped between the pump head and the transfer seat. Thus, when the anti-drip diaphragm pump is not working, the anti-drip diaphragm pump can prevent a gap from being generated between the flow control element of the diaphragm part and the transfer seat, thereby avoiding fluid from entering the balance groove of the transfer seat and effectively solving the problem of dripping at the fluid inlet of the pump head.

[0007] An object of the utility model is to provide an anti-drip diaphragm pump, wherein during the working process of the anti-drip diaphragm pump, a negative pressure environment is formed in the balance groove below the flow control element, so that the flow control element is maintained in a deformed state and allows the second flow channel of the pump head and the fluid outlet to be always communicated, thereby enabling the anti-drip diaphragm pump to stably pump out fluid.

[0008] An object of the present utility model is to provide a drip-proof diaphragm pump, wherein the bottom of the flow channel forming ring of the pump head does not need to participate in forming the pump head perforation of the pump head. Therefore, the bottom of the flow channel forming ring can press the edge of the flow control element towards the transfer seat in the entire circumferential direction of the flow control element, so that the entire circumferential direction of the flow control element is clamped by the pump head and the transfer seat, so that the drip-proof diaphragm pump can prevent a gap from being generated between the flow control element and the transfer seat.

[0009] According to an aspect of the present utility model, the present utility model provides a drip-proof diaphragm pump, which includes a reset part, a diaphragm part, a boosting part, a pump head and a transfer seat. The diaphragm part includes a deformable flow control element. The boosting part has multiple groups of middle through holes, multiple groups of peripheral through holes and multiple boosting cavities with variable space sizes. The pump head has a fluid inlet, a fluid outlet, a first flow channel, a second flow channel and a pump head perforation connecting the first flow channel and the second flow channel. The transfer seat has a distribution groove, a balance groove, a first channel, a second channel and a third channel connecting the distribution groove and the balance groove. The pump head and the boosting part are respectively installed on opposite sides of the transfer seat. The fluid inlet of the pump head communicates with the first channel of the transfer seat. The first flow channel of the pump head communicates with the second channel of the transfer seat. The flow control element closes the top opening of the balance groove of the transfer seat, and the entire circumferential direction of the flow control element is clamped by the pump head and the transfer seat. The reset part is deformably arranged in the balance groove of the transfer seat with opposite ends respectively abutted against the flow control element and the transfer seat. Each of the peripheral through holes of the boosting part is configured to be able to communicate each of the boosting cavities and the distribution groove of the transfer seat. Each group of the middle through holes of the boosting part is configured to be able to communicate each of the boosting cavities and the second channel of the transfer seat.

[0010] According to an embodiment of the present utility model, the pump head includes a pump head body and a flow channel forming ring. The fluid inlet and the fluid outlet are formed on the pump head body. The pump head body has a pump head groove and an outlet nozzle located at the outlet of the pump head groove. The flow channel forming ring is arranged in the pump head groove of the pump head body in a sleeved manner on the outlet nozzle, so that the pump head groove of the pump head body is separated by the flow channel forming ring into the first flow channel and the second flow channel. The pump head perforation is formed between the pump head body and the flow channel forming ring. The entire circumferential direction of the flow control element is clamped between the bottom of the flow channel forming ring and the transfer seat.

[0011] According to an embodiment of the present utility model, the pump head has a notch. In the height direction, the position of the notch of the pump head is opposite to the position of the flow channel forming ring, so as to form the pump head perforation of the pump head part between the pump head and the flow channel forming ring by the notch of the pump head.

[0012] According to an embodiment of the present utility model, the top of the flow channel forming ring has a notch. In the height direction, the position of the notch of the flow channel forming ring is opposite to the position of the pump head, so as to form the pump head perforation of the pump head part between the pump head and the flow channel forming ring by the notch of the flow channel forming ring.

[0013] According to an embodiment of the present utility model, the flow channel forming ring has a perforation, and the perforation of the flow channel forming ring forms the pump head perforation of the pump head part.

[0014] According to an embodiment of the present utility model, the pump head has a limiting arm, the limiting arm is located in the pump head groove of the pump head, and the limiting arm abuts against the outer wall of the flow channel forming ring to prevent the flow channel forming ring from moving by the limiting arm.

[0015] According to an embodiment of the present utility model, the pump head has a limiting arm, the limiting arm is located in the pump head groove of the pump head, and the limiting arm abuts against the outer wall of the flow channel forming ring to prevent the flow channel forming ring from moving by the limiting arm.

[0016] According to an embodiment of the present utility model, the pump head has a limiting arm, the limiting arm is located in the pump head groove of the pump head, and the limiting arm abuts against the outer wall of the flow channel forming ring to prevent the flow channel forming ring from moving by the limiting arm.

[0017] According to an embodiment of the present utility model, the anti-drip diaphragm pump includes a gasket, the gasket has a first gasket perforation and a plurality of second gasket perforations, the middle through hole of the pressurizing part and the second channel of the transfer seat are connected through the first gasket perforation of the gasket, and the peripheral through holes of the pressurizing part and the distribution groove of the transfer seat are connected through the second gasket perforations of the gasket.

[0018] According to an embodiment of the present utility model, the anti-drip diaphragm pump includes an outlet check valve and a plurality of inlet check valves, wherein the outlet check valve is disposed above the pressurizing portion, and the outlet check valve opens the middle through hole of the pressurizing portion by deforming upward, so that the middle through hole of the pressurizing portion is communicated with the second passage of the transfer seat. The inlet check valve is disposed below the pressurizing portion, and the inlet check valve opens the peripheral through hole of the pressurizing portion by deforming downward, so that the pressurizing cavity of the pressurizing portion is communicated with the distribution groove of the transfer seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective three-dimensional schematic view of an anti-drip diaphragm pump according to a preferred embodiment of the present utility model.

[0020] Figure 2 is a perspective three-dimensional schematic view of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model from another perspective.

[0021] Figure 3 is an exploded schematic view of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model from one perspective.

[0022] Figure 4 is an exploded schematic view of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model from another perspective.

[0023] Figure 5 is a cross-sectional schematic view of a partial position of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model.

[0024] Figure 6 is a cross-sectional schematic view of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model from a planar perspective.

[0025] Figure 7 is Figure 6 an enlarged view of a partial position.

[0026] Figure 8 is a perspective three-dimensional schematic view of a partial position of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model.

[0027] Figure 9 is an exploded schematic view of the above partial position of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model.

[0028] Figure 10 is a perspective three-dimensional schematic view of yet another partial position of the anti-drip diaphragm pump according to the above preferred embodiment of the present utility model.

[0029] Figure 11 It is a three-dimensional schematic diagram of another partial position of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention.

[0030] Figure 12 It is an exploded schematic diagram of the above-mentioned partial position of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from one perspective.

[0031] Figure 13 It is an exploded schematic diagram of the above-mentioned partial position of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from another perspective.

[0032] Figure 14 It is a three-dimensional schematic diagram of another partial position of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from one perspective.

[0033] Figure 15 It is a three-dimensional schematic diagram of the above-mentioned partial position of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from another perspective.

[0034] Figure 16 It is a cross-sectional schematic diagram of a deformed example of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from a planar perspective.

[0035] Figure 17 It is Figure 16 an enlarged view of the partial position.

[0036] Figure 18 It is a cross-sectional schematic diagram of a deformed example of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from a planar perspective.

[0037] Figure 19 It is Figure 18 an enlarged view of the partial position.

[0038] Figure 20 It is a cross-sectional schematic diagram of a deformed example of the anti-drip diaphragm pump according to the above-mentioned preferred embodiment of the present invention from a planar perspective.

[0039] Figure 21 It is Figure 20 an enlarged view of the partial position. Detailed implementation manners

[0040] Before describing any embodiments of the present invention in detail, it should be understood that the present invention is not limited in its application to the details of the construction and arrangement of components set forth in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and of being practiced or carried out in various ways. In addition, it should be understood that the terminology and phrases used herein are for the purpose of description and should not be regarded as restrictive. As used herein, the terms "including" or "having" and their variants are intended to cover the listed items and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variants are used broadly and cover both direct and indirect mounting, connection, support and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0041] And, on the first hand, in the disclosure of the present invention, the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as limiting the quantity.

[0042] Referring to the appended Figures 1 to 15 drawings of the specification of the present invention, a drip-proof diaphragm pump according to a preferred embodiment of the present invention will be disclosed and described hereinafter, wherein the drip-proof diaphragm pump includes a boosting part 10, a middle seat 20, a pump head part 30, a diaphragm part 40 and a reset part 50.

[0043] Specifically, the boosting part 10 has multiple groups of middle through holes 11, multiple groups of peripheral through holes 12 and multiple boosting cavities 13 with variable space sizes. Each group of the middle through holes 11 can selectively communicate with each of the boosting cavities 13. When a group of the middle through holes 11 communicates with one of the boosting cavities 13, as the space of this boosting cavity 13 becomes smaller, the fluid in this boosting cavity 13 can be discharged from the boosting part 10 through this middle through hole 11. Each group of the peripheral through holes 12 can selectively communicate with each of the boosting cavities 13. When a group of the peripheral through holes 12 communicates with a boosting cavity 13, as the space of this boosting cavity 13 becomes larger, the fluid can enter this boosting cavity 13 through this group of peripheral through holes 12.

[0044] More specifically, referring to the attached Figures 1 to 6 、 Figure 14 and Figure 15 , the supercharging part 10 includes a driving motor 14, an assembly ring 15, a swing frame 16, a supercharging seat 17, a diaphragm unit 18 and a base 19.

[0045] The assembly ring 15 has an annular space 151 and a shaft hole 152 communicating with the annular space 151. The driving motor 14 is installed at the bottom of the assembly ring 15, and the driving shaft 141 of the driving motor 14 extends into the annular space 151 of the assembly ring 15 after passing through the shaft hole 152 of the assembly ring 15. For example, the assembly ring 15 may have more than one screw through hole, and the end face of the driving motor 14 may be provided with more than one threaded blind hole. One end of the screw extends to the threaded blind hole of the driving motor 14 after passing through the screw through hole of the assembly ring 15, and this end of the screw is screwed with the driving motor 14 so that the driving motor 14 is installed at the bottom of the assembly ring 15. Preferably, the diameter of the shaft hole 152 of the assembly ring 15 is larger than the diameter of the driving shaft 141 of the driving motor 14. In this way, when the driving shaft 141 of the driving motor 14 rotates, the driving shaft 141 does not rub against the assembly ring 15.

[0046] The swing frame 16 is installed on the driving shaft 141 of the driving motor 14 in such a way that it is received in the annular space 151 of the assembly ring 15, and the swing frame 16 has a plurality of swing arms 161. When the driving shaft 141 of the driving motor 14 rotates, the swing frame 16 can swing in the annular space 151 of the assembly ring 15.

[0047] The supercharging seat 17 has a plurality of seat body through holes 171. The supercharging seat 17 is installed on the top of the assembly ring 15. Each of the seat body through holes 171 of the supercharging seat 17 communicates with the annular space 151 of the assembly ring 15 respectively, and the positions of the seat body through holes 171 of the supercharging seat 17 correspond to the positions of the swing arms 161 of the swing frame 16.

[0048] The diaphragm unit 18 includes a diaphragm 181 and a plurality of leather cups 182 integrally formed on the diaphragm 181. The diaphragm 181 is clamped between the pressure boosting seat 17 and the base 19. Each of the leather cups 182 extends into the annular space 151 of the assembly ring 15 through each of the seat body perforations 171 of the pressure boosting seat 17, and the extension arms 1821 of each of the leather cups 182 are respectively mounted on each of the swing arms 161 of the swing frame 16. For example, each of the swing arms 161 of the swing frame 16 has an insertion hole 1611, and the extension arms 1821 of each of the leather cups 182 are respectively inserted into the insertion holes 1611 of each of the swing arms 161 of the swing frame 16 to mount the extension arms 1821 of the leather cups 182 on the swing arms 161 of the swing frame 16.

[0049] Each group of the middle through holes 11 and each group of the peripheral through holes 12 of the pressure boosting portion 10 are respectively formed in the base 19. Each of the pressure boosting chambers 13 is formed by each of the leather cups 182 of the diaphragm unit 18, that is, one leather cup 182 is used to form one pressure boosting chamber 13 of the pressure boosting portion 10. When the drive motor 14 drives each of the swing arms 161 of the swing frame 16 to swing, each of the swing arms 161 can respectively drive each of the leather cups 182 to deform, thereby changing the space size of each of the pressure boosting chambers 13 of the pressure boosting portion 10.

[0050] In the Figures 1 to 15 In this specific example of the anti-drip diaphragm pump of the present utility model shown in the attached

[0051] In other words, in the attached Figures 1 to 15In this specific example of the anti-drip diaphragm pump of the present utility model shown, the number of the pressurizing chambers 13 of the pressurizing part 10 is three, which are a first pressurizing chamber 13a, a second pressurizing chamber 13b, and a third pressurizing chamber 13c respectively. The first pressurizing chamber 13a, the second pressurizing chamber 13b, and the third pressurizing chamber 13c are independent of each other. Correspondingly, the number of the middle through holes 11 of the pressurizing part 10 is three groups, which are a first group of middle through holes 11a, a second group of middle through holes 11b, and a third group of middle through holes 11c respectively. The number of the peripheral through holes 12 of the pressurizing part 10 is three groups, which are a first group of peripheral through holes 12a, a second group of peripheral through holes 12b, and a third group of peripheral through holes 12c respectively. Wherein the first group of middle through holes 11a and the first group of peripheral through holes 12a can be respectively communicated with the first pressurizing chamber 13a, the second group of middle through holes 11b and the second group of peripheral through holes 12b can be respectively communicated with the second pressurizing chamber 13b, and the third group of middle through holes 11c and the third group of peripheral through holes 12c can be respectively communicated with the third pressurizing chamber 13c. In this way, when the driving motor 14 works, the anti-drip diaphragm pump can continuously pump the fluid.

[0052] It can be understood that since the diaphragm 181 is clamped between the pressurizing seat 17 and the base 19, the diaphragm 181 can prevent the formation of a gap between the pressurizing seat 17 and the base 19 of the anti-drip diaphragm pump, so as to avoid the leakage of the fluid entering the pressurizing chamber 13 of the pressurizing part 10, thereby ensuring the sealing performance of the anti-drip diaphragm pump.

[0053] Refer to the attached Figure 3 、 Figure 4 and Figure 6, the anti-drip diaphragm pump includes an outlet check valve 60, the outlet check valve 60 is disposed above the pressurizing portion 10, and the outlet check valve 60 opens the middle through hole 11 of the pressurizing portion 10 by upward deformation. That is to say, the outlet check valve 60 has an initial state and a deformed state. When the outlet check valve 60 is in the initial state, the outlet check valve 60 closes the middle through hole 11 of the pressurizing portion 10. When the outlet check valve 60 is in the deformed state, the outlet check valve 60 opens the middle through hole 11 of the pressurizing portion 10. By changing the pressure in the pressurizing chamber 13 of the pressurizing portion 10, the outlet check valve 60 can be switched between the initial state and the deformed state. When the pressure in the pressurizing chamber 13 of the pressurizing portion 10 is small, the outlet check valve 60 can be in the initial state to prevent fluid from discharging through the middle through hole 11 of the pressurizing portion 10. When the pressure in the pressurizing chamber 13 of the pressurizing portion 10 is large, the outlet check valve 60 can be in the deformed state to allow fluid to discharge through the middle through hole 11 of the pressurizing portion 10.

[0054] Specifically, the base 19 of the pressurizing portion 10 has a groove 191 and an assembly table 192 located in the groove 191. Each group of the middle through holes 11 of the pressurizing portion 10 communicates with the groove 191 of the base 19, and each group of the middle through holes 11 is distributed around the assembly table 192. The outlet check valve 60 includes a first assembly portion 61 and a first valve piece portion 62 extending outward from the first assembly portion 61. The first assembly portion 61 has an assembly groove 611. The assembly table 192 of the base 19 is inserted into the assembly groove 611 of the first assembly portion 61 in such a way that the outlet check valve 60 is located in the groove 191 of the base 19, and the first valve piece portion 62 covers each group of the middle through holes 11 of the pressurizing portion 10. The first valve piece portion 62 is deformable so that the outlet check valve 60 can open the middle through hole 11 of the pressurizing portion 10 by upward deformation. That is, when the first valve piece portion 62 of the outlet check valve 60 is not deformed, the middle through hole 11 of the pressurizing portion 10 is closed. When the first valve piece portion 62 is deformed upward, the middle through hole 11 of the pressurizing portion 10 is opened.

[0055] Refer to the appendix Figure 3, the outlet check valve 60 includes three partition ribs 63, which are spaced apart from each other and disposed on the top of the first valve piece portion 62, and the partition ribs 63 respectively extend from the first assembly portion 61 to the edge of the first valve piece portion 62 to divide the first valve piece portion 62 into three independent deformable regions 621, and each of the deformable regions 621 covers each group of the middle through holes 11 of the pressurizing portion 10. Since each of the deformable regions 621 of the first valve piece portion 62 deforms independently, the opening and closing states of each group of the middle through holes 11 of the pressurizing portion 10 are also independent.

[0056] Specifically, the three deformable regions 621 of the first valve piece portion 62 of the outlet check valve 60 may be a first deformable region 621a, a second deformable region 621b, and a third deformable region 621c. The first deformable region 621a covers the first group of middle through holes 11a of the pressurizing portion 10 and is used to control the opening and closing state of the first group of middle through holes 11a. The second deformable region 621b covers the second group of middle through holes 11b of the pressurizing portion 10 and is used to control the opening and closing state of the second group of middle through holes 11b. The third deformable region 621c covers the third group of middle through holes 11c of the pressurizing portion 10 and is used to control the opening and closing state of the third group of middle through holes 11c.

[0057] In addition, since the partition ribs 63 of the outlet check valve 60 are disposed on the top of the first valve piece portion 62, the bottom of the first valve piece portion 62 is flat and smooth. When the deformable regions 621 of the first valve piece portion 62 are not deformed, there is no gap between the bottom of the first valve piece portion 62 and the inner wall of the base 19 for defining the groove 191, so as to ensure that the deformable regions 621 of the first valve piece portion 62 can reliably close the middle through holes 11 of the pressurizing portion 10.

[0058] In the appendix Figures 1 to 15In this specific example of the anti-drip diaphragm pump of the present utility model shown, in order to ensure that each of the deformable regions 621 of the first valve piece portion 62 of the outlet check valve 60 reliably closes each of the middle through holes 111 of the pressurizing portion 10, the mounting table 192 of the base 19 is provided with a triangular prism structure. Correspondingly, the shape and size of the mounting groove 611 of the first mounting portion 61 of the outlet check valve 60 match the shape and size of the mounting table 192. In this way, after the outlet check valve 60 is installed on the base 19, the outlet check valve 60 will not rotate relative to the base 19. In this way, it can be ensured that the position of the first deformable region 621a always corresponds to the position of the first group of middle through holes 11a of the pressurizing portion 10, the position of the second deformable region 621b always corresponds to the position of the second group of middle through holes 11b of the pressurizing portion 10, and the position of the third deformable region 621c always corresponds to the position of the third group of middle through holes 11c of the pressurizing portion 10.

[0059] Continue to refer to the attached Figure 3 、 Figure 4 and Figure 6 As shown in FIGS., the anti-drip diaphragm pump includes a plurality of inlet check valves 70, and each of the inlet check valves 70 is respectively disposed below the base 19 of the pressurizing portion 10. The inlet check valve 70 opens the peripheral through holes 12 of the pressurizing portion 10 by deforming downward. That is to say, the inlet check valve 70 has an initial state and a deformed state. When the inlet check valve 70 is in the initial state, the inlet check valve 70 closes the peripheral through holes 12 of the pressurizing portion 10. When the inlet check valve 70 is in the deformed state, the inlet check valve 70 opens the peripheral through holes 12 of the pressurizing portion 10.

[0060] Specifically, the base 19 of the pressurizing portion 10 has a plurality of assembly holes 193 extending from the bottom to the top of the base 19, and each of the assembly holes 193 is adjacent to each group of the peripheral through holes 12. For example, each of the assembly holes 193 of the base 19 extends from the bottom to the top to form a through hole. The inlet check valve 70 includes a second assembly portion 71 and a second valve piece portion 72 extending outward from the second assembly portion 71. The second assembly portion 71 is assembled in the assembly hole 193 of the base 19. For example, the second assembly portion 71 may be a cylinder that passes through the assembly hole 193 of the base 190 from bottom to top to assemble the second assembly portion 71 in the assembly hole 193 of the base 19, and the second valve piece portion 72 covers the peripheral through hole 12 of the pressurizing portion 10, wherein the second valve piece portion 72 is deformable so that the inlet check valve 70 can open the peripheral through hole 12 of the pressurizing portion 10 by deforming downward. That is, when the second valve piece portion 72 of the inlet check valve 60 is not deformed, the peripheral through hole 12 of the pressurizing portion 10 is closed, and when the second valve piece portion 72 is deformed, the peripheral through hole 12 of the pressurizing portion 10 is opened. By changing the pressure in the pressurizing chamber 13 of the pressurizing portion 10, the inlet check valve 70 can be switched between an initial state and a deformed state. When the pressure in the pressurizing chamber 13 of the pressurizing portion 10 is small, the inlet check valve 70 can be in a deformed state, and fluid is allowed to enter the pressurizing chamber 13 through the peripheral through hole 12 of the pressurizing portion 10. When the pressure in the pressurizing chamber 13 of the pressurizing portion 10 is large, the inlet check valve 70 can be in an initial state, and fluid is blocked from entering the pressurizing chamber 13 through the peripheral through hole 12 of the pressurizing portion 10.

[0061] More specifically, the number of the inlet check valves 70 is three, namely a first inlet check valve 70a, a second inlet check valve 70b, and a third inlet check valve 70c. The first inlet check valve 70a is installed in an assembly hole 193 adjacent to the first group of peripheral through holes 12a to control the opening and closing states of the first group of peripheral through holes 12a. The second inlet check valve 70b is installed in an assembly hole 193 adjacent to the second group of peripheral through holes 12b to control the opening and closing states of the second group of peripheral through holes 12b. The third inlet check valve 70c is installed in an assembly hole 193 adjacent to the third group of peripheral through holes 12c to control the opening and closing states of the third group of peripheral through holes 12c.

[0062] Continue to refer to the appendix Figures 1 to 15, the transfer seat 20 has a distribution groove 21, a balance groove 22, a first channel 23, a second channel 24, and a third channel 25 connecting the distribution groove 21 and the balance groove 22. The pump head 30 has a fluid inlet 31, a fluid outlet 32, a first flow channel 33, a second flow channel 34, and a pump head perforation 35 connecting the first flow channel 33 and the second flow channel 34. The diaphragm part 40 includes a flow control element 41. The pressurizing part 10 is installed on the bottom side of the transfer seat 20, and the pump head 30 is installed on the top side of the transfer seat 20. Wherein, the fluid inlet 31 of the pump head 30 communicates with the first channel 23 of the transfer seat 20. The flow control element 41 is deformably clamped between the pump head 30 and the transfer seat 20 in a manner that closes the top opening of the balance groove 22 of the transfer seat 20. The reset part 50 is deformably arranged in the balance groove 22 of the transfer seat 20 with its opposite ends respectively abutting against the flow control element 41 and the transfer seat 20. Each group of the peripheral through holes 12 of the pressurizing part 30 is configured to be able to communicate each pressurizing cavity 13 of the pressurizing part 10 and the distribution groove 21 of the transfer seat 20. Each group of the middle through holes 11 of the pressurizing part 10 is configured to be able to communicate each pressurizing cavity 13 of the pressurizing part 10 and the second channel 24 of the transfer seat 20.

[0063] Preferably, the transfer seat 20 has a first limit post 26 protruding towards the balance groove 22. The flow control element 41 has a second limit post 411 protruding towards the balance groove 22. And the position of the first limit post 26 of the transfer seat 20 corresponds to the position of the second limit post 411 of the flow control element 41 in the height direction. The reset part 50 can be a compression spring, its bottom is sleeved on the first limit post 26 of the transfer seat 20, and its top is sleeved on the second limit post 411 of the flow control element 41. In this way, the opposite ends of the reset part 50 can reliably abut against the flow control element 41 and the transfer seat 20, avoiding dislocation, inclination or deviation of the reset part 50.

[0064] In the appendix Figures 1 to 15In this specific example of the anti-drip diaphragm pump of the present utility model shown, the entire circumferential direction of the flow control element 41 is clamped by the pump head 30 and the transfer base 20. Since the pump head 30 is installed on the top side of the transfer base 20, the relative positions of the pump head 30 and the transfer base 20 remain unchanged. In this way, when the flow control element 41 is deformed, the anti-drip diaphragm pump can prevent a gap from being generated between the flow control element 41 and the transfer base 20, thereby avoiding the communication between the second channel 24 and the balance groove 22 of the transfer base 20, so as to avoid the dripping problem at the fluid inlet 31 of the pump head 30 of the anti-drip diaphragm pump.

[0065] Continue to refer to the attached Figure 7 As shown, the flow control element 41 includes a sealing portion 412, a peripheral portion 413, and a connecting portion 414. The cross-section of the connecting portion 414 is in a "U" shape, with its inner side connected to the sealing portion 412 and its outer side connected to the peripheral portion 413. The peripheral portion 413 of the flow control element 41 is clamped between the pump head 30 and the transfer base 20. The connecting portion 414 protrudes towards the balance groove 22 of the transfer base 20. The outer diameter dimension of the sealing portion 412 of the flow control element 41 is larger than the dimension of the fluid outlet 32 of the pump head 30. In this way, when the anti-drip diaphragm pump is not working, the sealing portion 412 of the flow control element 41 remains at the position of sealing the fluid outlet 32 of the pump head 30 to prevent the fluid outlet 32 of the pump head 30 from communicating with the second flow channel 34. When the anti-drip diaphragm pump is working, the connecting portion 414 of the flow control element 41 deforms and the sealing portion 412 moves downward to allow the fluid outlet 32 of the pump head 30 to communicate with the second flow channel 34. By setting the connecting portion 414 of the flow control element 41 to have a cross-section in a "U" shape, the distance that the sealing portion 412 moves downward can be increased. Preferably, the second limiting post 411 is formed on the sealing portion 412. Preferably, the second limiting post 411, the sealing portion 412, the peripheral portion 413, and the connecting portion 414 of the flow control element 41 are an integral structure, which is integrally formed by injection molding.

[0066] In the attached Figures 1 to 15In this specific example of the anti-drip diaphragm pump of the present utility model shown, the outlet check valve 60 is configured such that each of the middle through holes 11 of the pressurizing portion 10 can communicate with the second passage 24 of the transfer seat 20. When the first valve piece portion 62 of the outlet check valve 60 is not deformed and is in the initial state, the first valve piece portion 62 closes the middle through hole 11 of the pressurizing portion 10. At this time, the outlet check valve 60 prevents the pressurizing chamber 13 of the pressurizing portion 10 from communicating with the second passage 24 of the transfer seat 20. Correspondingly, when the first valve piece portion 62 of the outlet check valve 60 is deformed upward and is in the deformed state, the first valve piece portion 62 opens the middle through hole 11 of the pressurizing portion 10. At this time, the outlet check valve 60 allows the pressurizing chamber 13 of the pressurizing portion 10 to communicate with the second passage 24 of the transfer seat 20. The inlet check valve 70 is configured such that the peripheral through holes 12 of the pressurizing portion 10 can communicate with the distribution grooves 21 of the transfer seat 20. When the second valve piece portion 72 of the inlet check valve 70 is not deformed and is in the initial state, the second valve piece portion 72 closes the peripheral through hole 12 of the pressurizing portion 10. At this time, the inlet check valve 70 prevents the pressurizing chamber 13 of the pressurizing portion 10 from communicating with the distribution groove 21 of the transfer seat 20. Correspondingly, when the second valve piece portion 72 of the inlet check valve 70 is deformed downward and is in the deformed state, the second valve piece portion 72 opens the peripheral through hole 12 of the pressurizing portion 10. At this time, the inlet check valve 70 allows the pressurizing chamber 13 of the pressurizing portion 10 to communicate with the distribution groove 21 of the transfer seat 21.

[0067] In the attached Figures 1 to 15In this specific example of the anti-drip diaphragm pump of the present utility model shown, the fluid inlet 31 of the pump head 30 communicates with a water source (in other embodiments, the fluid inlet 31 of the pump head 30 can also be connected to a gas source or other fluid sources). During the process that the driving motor 14 drives the swing frame 16 to swing, causing the leather cup 182 of the diaphragm unit 18 to deform, when the space of the pressurizing chamber 13 in the pressurizing portion 10 becomes larger, the water pressure causes the second valve piece portion 72 of the inlet check valve 70 to deform downward to open the peripheral through hole 12 of the pressurizing portion 10. At this time, water enters the pressurizing chamber 13 of the pressurizing portion 10 from the distribution groove 21 of the transfer seat 20 through the peripheral through hole 12 of the pressurizing portion 10. When the space of the pressurizing chamber 13 in the pressurizing portion 10 becomes smaller, on the one hand, the water in the pressurizing chamber 13 of the pressurizing portion 10 causes the second valve piece portion 72 of the inlet check valve 70 to return to its initial state to close the peripheral through hole 12 of the pressurizing portion 10, so as to prevent the pressurizing chamber 13 of the pressurizing portion 10 from communicating with the distribution groove 21 of the transfer seat 20. On the other hand, the water in the pressurizing chamber 13 of the pressurizing portion 10 causes the deformable region 621 at the corresponding position of the first valve piece portion 62 of the outlet check valve 60 to deform upward to open the middle through hole 11 of the pressurizing portion 10. At this time, water enters the second channel 24 of the transfer seat 20, the first flow channel 33 of the pump head 30, the pump head through hole 35 and the second flow channel 34 from the pressurizing chamber 13 of the pressurizing portion 10 through the middle through hole 11 of the pressurizing portion 10. The water entering the first flow channel 33 of the pump head 30, the pump head through hole 35 and the second flow channel 34 causes the flow control element 41 and the reset portion 50 to deform downward, allowing the second flow channel 34 of the pump head 30 to communicate with the fluid outlet 32. At this time, water can be discharged through the fluid outlet 32 of the pump head 30. When the driving motor 14 stops working, the reset portion 50 pushes the flow control element 41 upward, causing the flow control element 41 to prevent the second flow channel 34 of the pump head 30 from communicating with the fluid outlet 32. At this time, water cannot be discharged through the fluid outlet 32 of the pump head 30.

[0068] It can be understood that since the entire circumferential direction of the peripheral portion 413 of the flow control element 41 is clamped by the pump head 30 and the transfer seat 20, therefore, whether the driving motor 14 is in the working state or the driving motor 14 is in the shutdown state, the anti-drip diaphragm pump can prevent a gap from being generated between the flow control element 41 and the transfer seat 20, thereby avoiding the second channel 24 of the transfer seat 20 from communicating with the balance groove 22, so as to avoid the dripping problem at the fluid inlet 31 of the pump head 30 of the anti-drip diaphragm pump.

[0069] Reference appendix Figures 11 to 13 Figures 11 to 13 , the distribution groove 21 of the transfer seat 20 is divided into a first distribution area 211 and a second distribution area 212. The first distribution area 211 and the second distribution area 212 are connected through two throats 213. Among them, the first group of peripheral through holes 12a of the pressurizing part 10 and the third channel 25 are connected to the first distribution area 211 of the transfer seat 20, and the second group of peripheral through holes 12b of the pressurizing part 10 and the first channel 23 of the transfer seat 20 are respectively connected to the second distribution area 212 of the transfer seat 20. And the sum of the flows of the two throats 213 of the transfer seat 20 is less than the sum of the flows of each through hole of the first group of peripheral through holes 12a of the pressurizing part 10. In this way, when the anti-drip diaphragm pump works, the amount of water entering the first distribution area 211 through the two throats 213 of the transfer seat 20 is less than the amount of water entering the first pressurizing cavity 13a through the first group of peripheral through holes 12a of the pressurizing part 10. At this time, the water in the balance groove 22 of the transfer seat 20 will enter the first pressurizing cavity 13a through the first group of peripheral through holes 12a of the pressurizing part 10, so that a negative pressure environment is formed in the balance groove 22 of the transfer seat 20, so that the flow control element 41 is maintained in a deformed state and allows the second flow channel 34 of the pump head 30 and the fluid outlet 32 to be always connected. Thus, the anti-drip diaphragm pump can stably pump out the fluid.

[0070] Further, reference appendix Figure 3 、 Figure 4 、 Figure 6 and Figure 7 Figure 7 , the diaphragm part 40 includes a diaphragm 42. The diaphragm 42 and the flow control element 41 are integrally formed. The diaphragm 42 has a first diaphragm perforation 421 and a second diaphragm perforation 422. The diaphragm 42 is clamped between the pump head 30 and the transfer seat 20 to prevent a gap from being generated between the pump head 30 and the transfer seat 20 by the diaphragm 42. Among them, the first diaphragm perforation 421 of the diaphragm 42 connects the first channel 23 of the transfer seat 20 and the fluid inlet 31 of the pump head 30, and the second diaphragm perforation 422 of the diaphragm 42 connects the second channel 23 of the transfer seat 20 and the first flow channel 33 of the pump head 30.

[0071] In appendix Figures 1 to 15In this specific example of the anti-drip diaphragm pump of the present utility model shown, the pump head 30 includes a pump head 36 and a flow channel forming ring 37. The fluid inlet 31 and the fluid outlet 32 are formed in the pump head 36, and the pump head 36 has a pump head groove 361 and an outlet nozzle 362 located in the pump head groove 361. The flow channel forming ring 37 is arranged in the pump head groove 361 of the pump head 36 in a manner that it is sleeved on the outlet nozzle 362, so that the pump head groove 361 of the pump head 36 is separated by the flow channel forming ring 37 into the first flow channel 33 and the second flow channel 34, and the pump head perforation 35 is formed between the pump head 36 and the flow channel forming ring 37. Since the pump head perforation 35 of the pump head 30 is formed between the pump head 36 and the flow channel forming ring 37, there is no need to provide a notch at the bottom of the flow channel forming ring 37. In this way, the entire circumferential direction of the flow control element 41 of the diaphragm part 40 is clamped between the bottom of the flow channel forming ring 37 and the transfer seat 20, so that the anti-drip diaphragm pump prevents a gap from being generated between the flow control element 41 and the transfer seat 20, and further avoids the communication between the second channel 24 of the transfer seat 20 and the balance groove 22, so as to avoid the dripping problem at the fluid inlet 31 of the pump head 30 of the anti-drip diaphragm pump.

[0072] Continue to refer to the attached Figures 1 to 15 , in this specific example of the anti-drip diaphragm pump of the present utility model, the pump head 36 has at least one notch 363. In the height direction, the position of the notch 363 of the pump head 36 is opposite to the position of the flow channel forming ring 37, so that the pump head perforation 35 of the pump head 30 is formed between the pump head 36 and the flow channel forming ring 37 by the notch 363 of the pump head 36. Optionally, in the attached Figure 16 and Figure 17 In another specific example of the anti-drip diaphragm pump of the present utility model shown, the notch 363 is formed in the flow channel forming ring 37. In the height direction, the position of the notch 363 formed in the flow channel forming ring 37 is opposite to the position of the pump head 36, so that the pump head perforation 35 of the pump head 30 is formed between the pump head 36 and the flow channel forming ring 37 by the notch 363. That is to say, the bottom of the flow channel forming ring 37 does not need to participate in forming the pump head perforation 35 of the pump head 30. In this way, the flow channel forming ring 37 can press the entire circumferential direction of the flow control element 41 towards the transfer seat 20, so that the entire circumferential direction of the flow control element 41 is clamped by the flow channel forming ring 37 and the transfer seat 20.

[0073] Refer to the attached Figure 4 , Figure 8 and Figure 9, the pump head 36 has a limiting arm 364, the limiting arm 364 is located in the pump head groove 361 of the pump head 36, the limiting arm 364 abuts against the outer wall of the flow channel forming ring 37, so that the limiting arm 364 prevents the flow channel forming ring 37 from moving, thereby reliably separating the pump head groove 361 of the pump head 36 into the first flow channel 33 and the second flow channel 34 by the flow channel forming ring 37, and ensuring that the bottom of the flow channel forming ring 37 and the transfer seat 20 reliably clamp the entire circumferential direction of the flow control element 41.

[0074] Reference attached Figure 6 , the anti-drip diaphragm pump includes a gasket 80, the gasket 80 has a plurality of first gasket perforations 81 and a second gasket perforation 82, the gasket 80 is clamped between the base 19 and the transfer seat 20, so that the gasket 80 prevents a gap from being generated between the base 19 and the transfer seat 20, wherein each of the first gasket perforations 81 of the gasket 80 communicates with the distribution groove 21 of the transfer seat 20 and each of the peripheral through holes 12 of the pressurizing portion 10, and the second gasket perforation 82 of the gasket 80 communicates with the second channel 24 of the transfer seat 20 and the groove 191 of the base 19.

[0075] Attached Figure 18 and Figure 19 show a deformation example of the anti-drip diaphragm pump according to the present invention. Different from the anti-drip diaphragm pump shown in the attached Figures 1 to 15 shown, in this specific example of the anti-drip diaphragm pump shown in the attached Figure 12 and Figure 13 shown, the pump head perforation 35 of the pump head portion 30 is formed by a perforation 371 formed in the flow channel forming ring 37.

[0076] Attached Figure 20 and Figure 21 show a deformation example of the anti-drip diaphragm pump according to the present invention. Different from the anti-drip diaphragm pump shown in the attached Figures 1 to 15 shown, in this specific example of the anti-drip diaphragm pump shown in the attached Figure 14 and Figure 15 shown, the pump head 36 of the pump head portion 30 and the flow channel forming ring 37 are of an integral structure.

[0077] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been completely and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the above principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. Anti-drip diaphragm pump, characterized in that: The invention comprises a reset part, a diaphragm part, a pressurizing part, a pump head and a transfer seat, wherein the diaphragm part comprises a deformable flow control element, wherein the pressurizing part comprises a plurality of groups of middle through holes, a plurality of groups of peripheral through holes and a plurality of pressurizing chambers with variable space sizes, wherein the pump head comprises a fluid inlet, a fluid outlet, a first flow channel, a second flow channel and a pump head through hole connecting the first flow channel and the second flow channel, wherein the transfer seat comprises a distribution groove, a balancing groove, a first channel, a second channel and a third channel connecting the distribution groove and the balancing groove, wherein the pump head and the pressurizing part are respectively installed on opposite sides of the transfer seat, and the fluid inlet of the pump head and the transfer seat are The first channel is connected, the first flow channel of the pump head and the second channel of the transfer seat are connected, the flow control element closes the top opening of the balance groove of the transfer seat, and the entire circumferential direction of the flow control element is clamped by the pump head and the transfer seat, the reset part is deformably arranged in the balance groove of the transfer seat in a manner that the two opposite ends respectively abut against the flow control element and the transfer seat, each of the peripheral through holes of the boosting part is constructed to be able to connect each of the boosting chambers and the distribution groove of the transfer seat, and each group of the middle through holes of the boosting part is constructed to be able to connect each of the boosting chambers and the second channel of the transfer seat.

2. A drip-proof diaphragm pump according to claim 1, wherein the pump head comprises a pump head and a flow channel molding ring, the fluid inlet and the fluid outlet are formed in the pump head, the pump head has a pump head groove and an outlet nozzle located in the pump head groove, the flow channel molding ring is arranged in the pump head groove of the pump head in a manner of being sleeved on the outlet nozzle, so that the pump head groove of the pump head is separated by the flow channel molding ring into the first flow channel and the second flow channel, wherein the pump head perforation is formed between the pump head and the flow channel molding ring, and the entire circumferential direction of the flow control element is clamped between the bottom of the flow channel molding ring and the intermediate transfer seat.

3. The drip-proof diaphragm pump according to claim 2, wherein the pump head has a notch, and in the height direction, the position of the notch of the pump head is opposite to the position of the flow channel molding ring, so that the notch of the pump head forms the pump head through hole of the pump head portion between the pump head and the flow channel molding ring.

4. The drip-proof diaphragm pump according to claim 2, wherein the top of the flow channel molding ring has a notch, and in the height direction, the position of the notch of the flow channel molding ring is opposite to the position of the pump head, so that the pump head through hole of the pump head portion is formed between the pump head and the flow channel molding ring by the notch of the flow channel molding ring. 5 . The drip-proof diaphragm pump according to claim 2 , wherein the flow channel molding ring has a through hole, and the through hole of the flow channel molding ring forms the pump head through hole of the pump head.

6. The drip-proof diaphragm pump according to claim 3, wherein the pump head has a limiting arm, the limiting arm is located in the pump head groove of the pump head, and the limiting arm abuts against the outer wall of the flow channel molding ring so that the flow channel molding ring is prevented from moving by the limiting arm.

7. The drip-proof diaphragm pump according to claim 4, wherein the pump head has a limiting arm, the limiting arm is located in the pump head groove of the pump head, and the limiting arm abuts against the outer wall of the flow channel molding ring so that the flow channel molding ring is prevented from moving by the limiting arm.

8. The drip-proof diaphragm pump according to claim 5, wherein the pump head has a limiting arm, the limiting arm is located in the pump head groove of the pump head, and the limiting arm abuts against the outer wall of the flow channel molding ring so that the flow channel molding ring is prevented from moving by the limiting arm.

9. A diaphragm pump according to any one of claims 1 to 8, wherein the anti-drip diaphragm pump comprises a sealing gasket, the sealing gasket having a first pad body perforation and a plurality of second pad body perforations, the central through hole of the pressurizing portion and the second channel of the intermediate transfer seat are connected via the first pad body perforation of the sealing gasket, and the peripheral through hole of the pressurizing portion and the distribution groove of the intermediate transfer seat are connected via the second pad body perforations of the sealing gasket.

10. An anti-drip diaphragm pump according to any one of claims 1 to 8, wherein the anti-drip diaphragm pump comprises an outlet check valve and a plurality of inlet check valves, wherein the outlet check valve is arranged above the boosting part, wherein the outlet check valve opens the middle through hole of the boosting part by deforming upward so that the middle through hole of the boosting part and the second channel of the intermediate transfer seat are communicated with each other, and the inlet check valve is arranged below the boosting part, wherein the inlet check valve opens the peripheral through holes of the boosting part by deforming downward so that the boosting chamber of the boosting part and the distribution groove of the intermediate transfer seat are communicated with each other.

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