Diaphragm type quantitative liquid outlet soap dispenser pump head

Abstract

The invention belongs to the technical field of soap dispenser devices, and particularly relates to a feeding structure, in particular to a diaphragm type quantitative liquid outlet soap dispenser pump head which comprises a mounting base and a diaphragm assembly, the mounting base is provided with an inner cavity, and a liquid inlet and a liquid outlet which are communicated with the inner cavity are formed in the upper side and the lower side of the mounting base respectively; the first umbrella membrane and the second umbrella membrane are arranged corresponding to the liquid inlet and the liquid outlet respectively, the bowl-shaped membrane is used for forming a liquid soap containing cavity together with an inner cavity of the installation base, and the bowl-shaped membrane can be squeezed inwards under the action of external force and can rebound outwards through the elastic force of the bowl-shaped membrane when the external force is relieved. When the bowl-shaped film is squeezed inwards, the internal pressure is increased, the first umbrella film closes the liquid inlet, the second umbrella film opens the liquid outlet, when the bowl-shaped film is squeezed in place, the pressure difference disappears, the second umbrella film resets to close the liquid outlet, and when the bowl-shaped film rebounds outwards, negative pressure is formed inside, the first umbrella film opens the liquid inlet, and liquid soap is sucked into the liquid soap containing cavity through the liquid inlet.

Description

Technical Field

[0001] The invention belongs to the technical field of soap dispenser devices, and particularly relates to a diaphragm-type soap dispenser pump head for quantitative liquid discharge. Background Art

[0002] The soap dispenser is a sanitary device used in homes, hotels, guesthouses, shopping malls and other places. The existing soap dispenser includes a cavity, a liquid inlet, a liquid outlet and a push rod. The large glass bead at the liquid inlet is naturally placed on the glass bead holder under the action of gravity. The glass bead holder is a four-claw shape with a channel around it. An O-ring is used to seal the push rod and the shell. When the push rod is pushed, it is reset by a spring between the shell and the push rod. At the liquid outlet, a small spring pushes the small glass bead to the end of the cavity to achieve a one-way sealing function. The soap liquid enters the pump head from the liquid inlet and flows into the cavity through the channel around the glass bead holder. The push rod is pushed, and high pressure is generated inside the cavity. The high pressure pushes the large glass bead upward to press against the liquid inlet, thereby blocking the liquid from flowing upward. At the same time, the high pressure inside the cavity pushes the small glass bead downward, and the soap liquid is pushed out of the liquid outlet by the high pressure. When the spring is reset, the lower small glass bead is reset and sealed. The spring overcomes the friction of the O-ring, forming a large negative pressure inside the cavity, sucking the soap liquid from the top down. However, this solution has the following problems:

[0003] As the push rod moves forward, the large glass bead on the upper part seals, and the soap liquid overcomes the small spring at the lower part to discharge liquid. During the spring reset process, the small glass bead at the lower part resets and seals. The spring must overcome the friction of the O-ring and at the same time requires a large force to form a negative pressure to suck the soap liquid from the upper part. This results in the spring force not being small. At the same time, the O-ring must move back and forth and also play a sealing role. It is in a rolling state due to the constant friction with the outer shell. In actual applications, by measuring the size of the push rod and the outer shell, it is found that the gap between the two is large, which further increases the tendency of the O-ring to flip. Therefore, when selecting the O-ring, if a larger size is selected, it will lead to the problem of excessive friction; if a smaller size is selected, it will lead to leakage. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art of easy leakage, laborious pressing, and inability to meet the requirements of fine-tuning the liquid output, and to provide a diaphragm-type soap dispenser pump head with quantitative liquid output.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a diaphragm-type soap dispenser pump head with quantitative liquid discharge, comprising:

[0006] A mounting base having an internal cavity, and a liquid inlet and a liquid outlet communicating with the internal cavity are respectively provided on the upper and lower sides of the mounting base;

[0007] The membrane assembly comprises a first umbrella membrane and a second umbrella membrane respectively arranged corresponding to the liquid inlet and the liquid outlet, and a bowl-shaped membrane for forming a soap liquid containing cavity together with the internal cavity of the mounting base, the bowl-shaped membrane can be squeezed inward under external force and can rebound outward by its own elastic force when the external force is removed;

[0008] When the bowl-shaped membrane is squeezed inward, the internal pressure increases, the first umbrella membrane closes the liquid inlet, and the second umbrella membrane opens the liquid outlet. When the bowl-shaped membrane is squeezed in place, the pressure difference disappears, and the second umbrella membrane resets to close the liquid outlet. When the bowl-shaped membrane rebounds outward, a negative pressure is formed inside, the first umbrella membrane opens the liquid inlet, and the soap liquid is sucked into the soap liquid containing cavity from the liquid inlet.

[0009] Preferably, the top of the first umbrella membrane is arranged towards the liquid inlet, and the tail is arranged towards the soap liquid containing cavity. The top of the second umbrella membrane is arranged towards the soap liquid containing cavity, and the tail is arranged towards the liquid outlet.

[0010] Preferably, the first umbrella membrane and the second umbrella membrane are coaxially arranged, and the central axes of the first umbrella membrane and the second umbrella membrane are perpendicular to the central axis of the bowl-shaped membrane.

[0011] Preferably, an intermediate rod is arranged between the first umbrella membrane and the second umbrella membrane, the intermediate rod has a channel communicating with the soap liquid containing cavity, and the soap liquid enters the soap liquid containing cavity through the first umbrella membrane from the liquid inlet, and then enters the liquid outlet through the channel of the intermediate rod.

[0012] Preferably, the first umbrella membrane is sleeved on the outer periphery of the top of the intermediate rod, the top of the first umbrella membrane is clamped and connected between the intermediate rod, the tail of the first umbrella membrane is sealingly abutted with the inner wall of the liquid inlet, the second umbrella membrane is located between the channel of the intermediate rod and the liquid outlet, and the bottom of the second umbrella membrane is provided with a spring and can be sealingly abutted with the channel of the intermediate rod under the action of the spring.

[0013] Preferably, a first O-shaped sealing ring is arranged at the end of the liquid inlet, and a second O-shaped sealing ring is arranged between the bottom of the intermediate rod and the liquid outlet.

[0014] Preferably, an outwardly extending boss is arranged on the periphery of the bowl-shaped membrane, the boss is sealingly clamped between the mounting base port and the sleeve, and the side of the bowl-shaped membrane away from the soap liquid containing cavity is connected with a push rod arranged coaxially.

[0015] Preferably, an outer cover is further sealingly connected to the outside of the sleeve, one end of the outer cover is clamped and connected with the mounting base, and the other end has a mounting hole matched with the push rod.

[0016] Preferably, the push rod has an adjustable limiting piece, and the limiting piece is used to adjust the stroke of the push rod, so as to control the squeezing amount of the bowl-shaped membrane.

[0017] After adopting the above technical solution, the diaphragm-type soap dispenser pump head with quantitative liquid discharge provided by the present invention has the following beneficial effects:

[0018] 1) The present invention can achieve liquid discharge and liquid absorption through the deformation and reset of the bowl-shaped membrane itself. There is no relative movement between the bowl-shaped membrane and the mounting seat, which can avoid the selection problem of using an O-ring seal between the push rod and the mounting seat in the prior art, and has a better sealing effect;

[0019] 2) The present invention can more reliably control the inflow and outflow of soap liquid through the design of the first and second umbrella films. The structural characteristics of the umbrella films can also achieve the function of preventing liquid backflow, and have good guiding and sealing effects. At the same time, the double sealing of the first and second umbrella films can ensure that there is no leakage problem.

[0020] 3) The present invention can adjust the pushing amount of the push rod through the design of an adjustable limiter on the push rod. The volume of the soap liquid holding chamber is the maximum volume of liquid discharged each time. The squeezing amount of the bowl-shaped membrane is controlled by adjusting the pushing amount of the push rod, thereby realizing the control of the soap liquid discharge amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a cross-sectional view of the structure of a soap dispenser pump head with a diaphragm-type quantitative liquid discharge.

[0022] Among them: mounting seat 1, liquid inlet 2, liquid outlet 3, first umbrella membrane 4, second umbrella membrane 5, bowl-shaped membrane 6, middle rod 7, spring 8, first O-ring 9, second O-ring 10, sleeve 11, push rod 12, outer cover 13, limiter 14. DETAILED DESCRIPTION

[0023] The present invention will be further described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments described are only some, not all, of the embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention, its application, or use. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0026] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0029] like Figure 1As shown, the present invention provides a diaphragm-type quantitative liquid discharge soap dispenser pump head, comprising a mounting base 1 and a diaphragm assembly arranged in the mounting base 1, the mounting base 1 having an internal cavity, and the upper and lower sides of the mounting base 1 are respectively provided with a liquid inlet 2 and a liquid outlet 3 connected to its internal cavity, the diaphragm assembly comprising a first umbrella film 4 and a second umbrella film 5 respectively arranged corresponding to the liquid inlet 2 and the liquid outlet 3, and a bowl-shaped membrane 6 for forming a soap liquid holding cavity together with the internal cavity of the mounting base 1, the bowl-shaped membrane 6 can be squeezed inwardly under the action of an external force, and can rebound outwardly by its own elastic force when the external force is released, when the bowl-shaped membrane 6 is squeezed inwardly, the internal pressure increases, the first umbrella film 4 closes the liquid inlet 2, and the second umbrella film 5 opens the liquid outlet 3, when the bowl-shaped membrane 6 is squeezed into place, the pressure difference disappears, the second umbrella film 5 resets and closes the liquid outlet 3, when the bowl-shaped membrane 6 rebounds outward, negative pressure is formed inside, the first umbrella film 4 opens the liquid inlet 2, and the soap liquid is sucked into the soap liquid holding cavity from the liquid inlet 2.

[0030] Specifically, the top of the first umbrella film 4 is arranged toward the liquid inlet 2, and the tail is arranged toward the soap liquid holding chamber. The top of the second umbrella film 5 is arranged toward the soap liquid holding chamber, and the tail is arranged toward the liquid outlet 3. The structural characteristics of the umbrella film cause the soap liquid to only flow from the top to the tail, and cannot flow from the tail to the top, that is, it has a one-way valve effect. Furthermore, the first umbrella film 4 and the second umbrella film 5 are coaxially arranged, and the central axes of the first umbrella film 4 and the second umbrella film 5 are perpendicular to the central axis of the bowl-shaped membrane 6. An intermediate rod 7 is also provided between the first umbrella film 4 and the second umbrella film 5. The intermediate rod 7 has a channel connected to the soap liquid holding chamber. When in use, the soap liquid enters the soap liquid holding chamber from the liquid inlet 2 through the first umbrella film 4, and then enters the liquid outlet 3 through the second umbrella film 5 through the channel of the intermediate rod 7.

[0031] It should be noted that the first umbrella film 4 is sleeved on the outer circumference of the top of the intermediate rod 7. Specifically, the top of the first umbrella film 4 is engaged with the intermediate rod 7, and the tail is sealed against the inner wall of the liquid inlet 2. The second umbrella film 5 is located between the channel of the intermediate rod 7 and the liquid outlet 3, and a spring 8 is provided at the bottom of the second umbrella film 5, and it can be sealed against the channel of the intermediate rod 7 under the action of the spring 8.

[0032] In order to further ensure the sealing effect, a first O-ring 9 is provided at the end of the liquid inlet 2 for sealing connection with the soap liquid container, and a second O-ring 10 is provided between the bottom of the intermediate rod 7 and the liquid outlet 3 to ensure the sealing effect between it and the liquid outlet 3.

[0033] According to one embodiment of the present invention, the bowl-shaped membrane 6 is provided with a boss extending outward in the circumference, and the boss is sealed and clamped between the port of the mounting seat 1 and the sleeve 11, and the side of the bowl-shaped membrane 6 away from the soap liquid containing chamber is connected to the push rod 12 coaxially arranged therewith, and the outer side of the sleeve 11 is also sealed and connected to an outer cover 13, one end of the outer cover 13 is engaged with the mounting seat 1, and the other end has a mounting hole that cooperates with the push rod 12, and the push rod 12 has an adjustable limit member 14, which is used to adjust the stroke of the push rod 12, thereby controlling the extrusion amount of the bowl-shaped membrane 6. In this embodiment, the limit member 14 is preferably an adjusting nut.

[0034] When the diaphragm-type quantitative liquid-discharging soap dispenser pump head of the present invention is used, the soap liquid enters the mounting seat 1, and pushes open the sealing between the tail of the first umbrella membrane 4 and the inner wall of the liquid inlet 2 from top to bottom to enter the soap liquid holding cavity (the first umbrella membrane 4 is tapered to form a one-way valve, so that the soap liquid can enter from the top and cannot be discharged upward from the inside of the mounting seat 1). The push rod 12 is pushed, and the bowl-shaped membrane 6 is deformed, squeezing the soap liquid in the soap liquid holding cavity. The internal pressure increases, and the soap liquid cannot be discharged upward from the upper first umbrella membrane 4. The passage through the middle rod 7 pushes the second umbrella membrane 5 to overcome the force of the spring 8, opens the sealing connection between the second umbrella membrane 5 and the middle rod 7 downward, and is finally discharged from the liquid outlet 3. When the stroke of the push rod 12 reaches its maximum, the bowl-shaped membrane 6 is deformed into place, there is no more thrust, and the internal pressure difference disappears. The second umbrella membrane 5 is restored to its seal under the action of the spring 8, and the liquid outlet 3 is closed. The bowl-shaped membrane 6 relies on its own elastic force to restore its deformation, forming a negative pressure inside the cavity, and the soap liquid is sucked out from the upper liquid inlet 2.

[0035] In summary, the present invention provides a diaphragm-type soap dispenser pump head with quantitative liquid discharge, which has a simple structure and is easy to install. It can realize liquid discharge and liquid absorption through the deformation and resetting of the bowl-shaped membrane itself, and the liquid discharge volume can be quantitatively and fine-tuned. At the same time, under the action of the first umbrella membrane and the second umbrella membrane, the flow direction of the soap liquid at the liquid inlet and the liquid outlet are both unidirectional designs, which have both good guiding properties and can achieve a better sealing effect. In addition, the two seals can further ensure that there will be no leakage problems.

[0036] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A diaphragm-type soap dispenser pump head with quantitative liquid discharge, characterized in that: include: A mounting base (1), wherein the mounting base (1) has an internal cavity, and a liquid inlet (2) and a liquid outlet (3) are respectively provided on the upper and lower sides of the mounting base (1), the liquid inlet and the liquid outlet being in communication with the internal cavity; A diaphragm assembly, comprising a first umbrella membrane (4) and a second umbrella membrane (5) respectively arranged corresponding to the liquid inlet (2) and the liquid outlet (3), and a bowl-shaped membrane (6) for forming a soap liquid containing cavity together with the internal cavity of the mounting seat (1), wherein the bowl-shaped membrane (6) can be squeezed inwardly under the action of an external force and can rebound outwardly by its own elastic force when the external force is released; When the bowl-shaped membrane (6) is squeezed inward, the internal pressure increases, the first umbrella membrane (4) closes the liquid inlet (2), and the second umbrella membrane (5) opens the liquid outlet (3); when the bowl-shaped membrane (6) is squeezed into place, the pressure difference disappears, the second umbrella membrane (5) returns to its original position and closes the liquid outlet (3); when the bowl-shaped membrane (6) rebounds outward, negative pressure is formed inside, the first umbrella membrane (4) opens the liquid inlet (2), and the soap liquid is sucked into the soap liquid holding chamber through the liquid inlet (2).

2. A diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 1, characterized in that: The top of the first umbrella film (4) is arranged toward the liquid inlet (2), and the tail is arranged toward the soap liquid receiving cavity; the top of the second umbrella film (5) is arranged toward the soap liquid receiving cavity, and the tail is arranged toward the liquid outlet (3).

3. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 1, characterized in that: The first umbrella film (4) and the second umbrella film (5) are coaxially arranged, and the central axes of the first umbrella film (4) and the second umbrella film (5) are perpendicular to the central axis of the bowl-shaped film (6).

4. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 1, characterized in that: An intermediate rod (7) is provided between the first umbrella film (4) and the second umbrella film (5), and the intermediate rod (7) has a channel connected to the soap liquid containing chamber. The soap liquid enters the soap liquid containing chamber from the liquid inlet (2) through the first umbrella film (4), and then enters the liquid outlet (3) through the second umbrella film (5) through the channel of the intermediate rod (7).

5. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 4, characterized in that: The first umbrella film (4) is sleeved on the outer circumference of the top of the intermediate rod (7), the top of the first umbrella film (4) and the intermediate rod (7) are engaged and clamped, and the tail is sealed against the inner wall of the liquid inlet (2); the second umbrella film (5) is located between the channel of the intermediate rod (7) and the liquid outlet (3), and a spring (8) is provided at the bottom of the second umbrella film (5), and can be sealed against the channel of the intermediate rod (7) under the action of the spring (8).

6. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 4, characterized in that: A first O-type sealing ring (9) is provided at the end of the liquid inlet (2), and a second O-type sealing ring (10) is provided between the bottom of the intermediate rod (7) and the liquid outlet (3).

7. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 1, characterized in that: The bowl-shaped membrane (6) is provided with an outwardly extending boss on its circumference, and the boss is sealed and clamped between the port of the mounting seat (1) and the sleeve (11), and the side of the bowl-shaped membrane (6) away from the soap liquid containing chamber is connected to a push rod (12) coaxially arranged therewith.

8. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 7, characterized in that: The outer side of the sleeve (11) is also sealed with an outer cover (13), one end of the outer cover (13) is engaged with the mounting seat (1), and the other end has a mounting hole that matches the push rod (12).

9. The diaphragm-type soap dispenser pump head with quantitative liquid dispensing according to claim 7, characterized in that: The push rod (12) is provided with an adjustable limiter (14), and the limiter (14) is used to adjust the stroke of the push rod (12), thereby controlling the extrusion amount of the bowl-shaped membrane (6).

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