Pump body of emulsion pump

Abstract

The utility model discloses a pump body of an emulsion pump, which comprises a pump chamber and a pump body, a cavity is formed in the pump chamber, a liquid inlet is formed in the bottom end of the cavity, a pump chamber opening is formed in the top end of the cavity, and a pump core of the emulsion pump is inserted into the cavity to extract emulsion; the seat plate is provided with a pair of pump chambers in parallel, and pump chamber openings of the pump chambers are formed in the upper surface of the seat plate; wherein an elastic supporting plate is further fixedly arranged at the bottom of the seat plate, and the size of the elastic supporting plate is the same as that of the seat plate. According to the device, the elastic supporting plate can be tightly attached to the opening portion of the container all the time under the elastic effect of the elastic supporting plate, the situation that due to the fact that a gap exists between the pump body and the opening portion of the container, emulsion permeates and pollutes the pump body is avoided, the supporting effect of the base plate on the pump body can be enhanced through the elastic supporting plate, and the overall balance is kept when the pump body is pressed; gap enlargement caused by local deformation is avoided, the sealing performance is improved, and the using effect of the emulsion pump is improved.

Description

Technical Field

[0001] This application relates to the field of liquid extraction technology, specifically to a pump body for an emulsion pump. Background Technology

[0002] A lotion pump is a tool used to dispense the contents of cosmetic containers. It is typically suitable for semi-fluid or viscous cosmetics such as shower gel, shampoo, lotion, serum, and foundation. It utilizes the principle of atmospheric balance, pumping the liquid out of the bottle by pressing and allowing outside air to enter. A typical lotion pump consists of a nozzle / pump, upper pump column, locking cap, gasket, bottle cap, pump stopper, lower pump column, spring, pump body, glass bulb, and straw.

[0003] Currently, common emulsion pumps include single-pump and dual-pump types. Single-pump pumps are suitable for liquid containers with a single cavity, while dual-pump pumps are suitable for liquid containers with two cavities, allowing the pump to dispense liquid from both cavities separately. This is suitable for carrying or dispensing different daily chemical products at the same time.

[0004] Dual-pump emulsion pumps dispense liquid by pressing each pump body individually. During pressing, the extracted liquid drips and can seep into adjacent containers through the gap between the pump body and the container opening, causing cross-contamination. Pressing only one pump body can also disrupt the overall balance of the emulsion pump, causing localized deformation and further increasing the gap between the pump body and the container opening, making it easier for liquid to seep in and cause contamination, thus affecting the effectiveness of the pump. Utility Model Content

[0005] This application provides a pump body for an emulsion pump, which aims to at least improve the technical problems existing in the prior art.

[0006] In accordance with the above objectives, this application provides a pump body for an emulsion pump, comprising:

[0007] The pump chamber has an internal cavity with a liquid inlet at the bottom and a pump chamber outlet at the top. The cavity is used to insert the pump core of the emulsion pump for drawing emulsion.

[0008] A base plate is provided with a pair of pump chambers arranged side by side, and the pump chamber outlets of the pump chambers are located on the upper surface of the base plate;

[0009] The bottom of the seat plate is also fixed with an elastic support plate, which is the same size as the seat plate.

[0010] The present application has the following beneficial effects: the elastic support plate can always maintain a tight fit with the mouth of the container under its own elasticity, avoiding the seepage and contamination of emulsion caused by gaps between the pump body and the mouth of the container. The elastic support plate can also enhance the support of the seat plate for the pump body, maintain the overall balance when pressing the pump body, avoid the increase of gaps caused by local deformation, improve the sealing performance, and improve the performance of the emulsion pump.

[0011] Furthermore, the elastic support plate also includes an extension that covers a first outer wall section of the pump chamber, the first outer wall section being located at the junction of the outer wall of the pump chamber and the lower surface of the seat plate.

[0012] Furthermore, the pump chamber opening is provided with a first limiting step, and the pump core of the emulsion pump is fitted with an end cap. When the pump core is inserted into the cavity, the end cap closes to the pump chamber opening, the upper surface of the end cap is flush with the upper surface of the seat plate, and the lower surface of the end cap abuts against the first limiting step.

[0013] Furthermore, the bottom of the pump chamber is provided with a pump bead chamber that communicates with the cavity, the pump bead chamber is provided with a movable pump bead, and the liquid inlet is located at the bottom opening of the pump bead chamber.

[0014] Furthermore, a second limiting step is provided at the connection between the cavity and the pump ball cavity. When the pump core moves within the cavity, the pump core penetrates and abuts against the second limiting step.

[0015] Furthermore, the outer wall of the pump chamber is provided with a through hole, which communicates with the cavity.

[0016] Furthermore, the seat plate is made of plastic, the elastic support plate is made of silicone elastomer, and the seat plate and the elastic support plate are manufactured by one of the following processes: integral injection molding and overmolding injection molding.

[0017] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the pump body of an emulsion pump provided in an exemplary embodiment of this application;

[0019] Figure 2 This is a three-dimensional schematic diagram of the pump body of an emulsion pump provided in an exemplary embodiment of this application from another perspective;

[0020] Figure 3 This is a cross-sectional view of the pump body of an emulsion pump provided in an exemplary embodiment of this application;

[0021] Figure 4This is a cross-sectional view of a pump body with a pump core inserted, provided in an exemplary embodiment of this application for an emulsion pump;

[0022] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 yes Figure 4 Enlarged diagram of point B in the middle.

[0024] in, Figures 1 to 6 The annotations in the accompanying drawings are explained as follows:

[0025] 1 Pump chamber, 11 Cavity, 12 Liquid inlet, 13 Pump chamber outlet, 14 First outer wall section, 15 First limiting step, 17 Pump bead chamber, 18 Second limiting step, 19 Through hole, 171 Pump bead.

[0026] 2 seat plates, 21 elastic support plates, 22 extensions;

[0027] 3 pump cores, 31 end caps. Detailed Implementation

[0028] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0029] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0030] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0031] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0033] This utility model provides a pump body for an emulsion pump through the following technical solution, as shown in the attached figure. Figure 1-4 As shown, it includes:

[0034] Pump chamber 1 has an internal cavity 11. The bottom end of the cavity 11 has a liquid inlet 12 and the top end of the cavity 11 has a pump chamber outlet 13. The cavity 11 is used to insert the pump core 3 of the emulsion pump for drawing emulsion.

[0035] A base plate 2 is provided with a pair of pump chambers 1 arranged side by side, and the pump chamber port 13 of the pump chamber 1 is located on the upper surface of the base plate 2;

[0036] Among them, the bottom of the seat plate 2 is also fixedly provided with an elastic support plate 21, which is the same size as the seat plate 2.

[0037] Compared with the prior art, this application has the following beneficial effects: the elastic support plate 21 can always maintain a tight fit with the mouth of the container under its own elasticity, avoiding the seepage and contamination of emulsion caused by gaps between the pump body and the mouth of the container. The elastic support plate 21 can also enhance the support of the seat plate 2 for the pump body, maintain the overall balance when pressing the pump body, avoid the increase of gaps caused by local deformation, improve the sealing performance, and improve the performance of the emulsion pump.

[0038] Specifically, the elastic support plate 21 also includes an extension 22, which covers the first outer wall section 14 of the pump chamber 1. The first outer wall section 14 is located at the junction of the outer wall of the pump chamber 1 and the lower surface of the seat plate 2.

[0039] The elastic support plate 21, due to its own elasticity, can always maintain a tight fit with the opening of the container, ensuring good sealing between the pump body and the container after installation. When using the emulsion pump, the pump body is installed between the opening of the emulsion container and the container cap, and the pump body is fixed by locking the cap to the opening. After the pump body is fixed, the lower surface of the seat plate 2 will be tightly pressed against the opening of the container. Direct contact between the rigid material seat plate 2 and the container opening can cause uneven stress, leading to localized deformation and gaps. This allows dripping emulsion to seep into the container through these gaps, causing contamination.

[0040] The elastic support plate 21 enhances the support of the seat plate 2 for the pump body, while the extension 22 covering the first outer wall section 14 can overcome the concentrated stress generated at the junction of the outer wall of the pump chamber 1 and the lower surface of the seat plate 2, improve the overall balance of the seat plate 2 and the pump chamber 1, and avoid the seepage contamination caused by the increase in gaps due to local deformation, or the failure of the emulsion pump to be used due to the cracking of the seat plate 2 and the pump chamber 1. After the pump body is installed, the pump chamber 1 is suspended and supported by the seat plate 2, including overcoming the downward pressure force when the pump core 3 is pressed into the pump chamber 1. Compared to a single pump body, the effective area of ​​the seat plate 2 is reduced because two pump bodies are arranged side by side on the seat plate 2. With a fixed thickness, the supporting force that the seat plate 2 can provide is limited. However, the elastic support plate 21, which is the same size as the seat plate 2, is fixed at the bottom of the seat plate 2, which is equivalent to increasing the thickness of the seat plate 2, thereby improving the supporting force that the seat plate 2 can provide. At the same time, when using one pump body on one side, the pressure is concentrated on the pump body and the seat plate on that side, which breaks the overall force balance of the pump body and the seat plate. In particular, stress concentration will occur at the junction of the outer wall of the pump chamber 1 and the lower surface of the seat plate 2. The covered extension 22 increases the thickness at this point, overcomes the concentrated stress, and avoids the cracking of the seat plate 2 and the pump chamber 1 caused by stress concentration.

[0041] Due to its own elasticity, the elastic support plate 21 can always maintain a tight fit with the seat plate 2 when the seat plate 2 is deformed by force, thus avoiding the impact of local deformation on the sealing performance of the pump body and the container opening and ensuring the sealing performance.

[0042] In another exemplary embodiment, as shown in the appendix Figure 4-5 As shown, the pump chamber opening 13 is provided with a first limiting step 15, and the pump core 3 is fitted with an end cap 31. When the pump core 3 is inserted into the cavity 11, the end cap 31 closes to the pump chamber opening 13. The upper surface of the end cap 31 is flush with the upper surface of the seat plate 2, and the lower surface of the end cap 31 abuts against the first limiting step 15, thereby allowing the head of the pump core 3 to move within the cavity 11 by pressing it. Of course, an elastic element (not shown in the figure) can also be provided between the head of the pump core 3 and the upper surface of the end cap 31 to realize the rebound after the pump core 3 is pressed in, thereby facilitating the continuous extraction of emulsion.

[0043] In another exemplary embodiment, as shown in the appendix Figure 4 Appendix Figure 6 As shown, the bottom of the pump chamber 1 is provided with a pump ball chamber 17 that communicates with the cavity 11. The pump ball chamber 17 is provided with a movable pump ball 171, and the liquid inlet 12 is located at the bottom opening of the pump ball chamber 17.

[0044] Specifically, a second limiting step 18 is provided at the connection between the cavity 11 and the pump bead cavity 17. When the pump core 3 moves in the cavity 11, the pump core 3 goes deep into and abuts against the second limiting step 18, thereby limiting the stroke of the pump core 3 in the cavity 11 and realizing the stable extraction of emulsion by the pump core 3.

[0045] In addition, the outer wall of the pump chamber 1 is provided with a through hole 19, which is connected to the cavity 11. This through hole 19 is used to balance the air inside and outside the cavity 11 when the pump core 3 is drawing emulsion, so as to ensure smooth drawing.

[0046] The seat plate 2 is made of plastic, and the elastic support plate 21 is made of silicone elastomer. The seat plate 2 and the elastic support plate 21 can be manufactured by either integral injection molding or overmolding, which is convenient.

[0047] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A pump body for an emulsion pump, characterized in that, include: The pump chamber has an internal cavity with a liquid inlet at the bottom and a pump chamber outlet at the top. The cavity is used to insert the pump core of the emulsion pump for drawing emulsion. A base plate is provided with a pair of pump chambers arranged side by side, and the pump chamber outlets of the pump chambers are located on the upper surface of the base plate; The bottom of the seat plate is also fixed with an elastic support plate, which is the same size as the seat plate.

2. The pump body of the emulsion pump according to claim 1, characterized in that, The elastic support plate further includes an extension that covers a first outer wall section of the pump chamber, the first outer wall section being located at the junction of the outer wall of the pump chamber and the lower surface of the seat plate.

3. The pump body of an emulsion pump according to claim 1, characterized in that, The pump chamber opening is provided with a first limiting step, and the pump core of the emulsion pump is fitted with an end cap. When the pump core is inserted into the cavity, the end cap closes to the pump chamber opening. The upper surface of the end cap is flush with the upper surface of the seat plate, and the lower surface of the end cap abuts against the first limiting step.

4. The pump body of an emulsion pump according to claim 1, characterized in that, The bottom of the pump chamber is provided with a pump bead chamber that communicates with the cavity. The pump bead chamber contains movable pump beads, and the liquid inlet is located at the bottom opening of the pump bead chamber.

5. The pump body of an emulsion pump according to claim 4, characterized in that, A second limiting step is provided at the connection between the cavity and the pump ball cavity. When the pump core moves in the cavity, the pump core goes deep into and abuts against the second limiting step.

6. The pump body of an emulsion pump according to claim 1, characterized in that, The outer wall of the pump chamber is also provided with a through hole, which communicates with the cavity.

7. The pump body of an emulsion pump according to any one of claims 1-6, characterized in that, The seat plate is made of plastic, and the elastic support plate is made of silicone elastomer. The seat plate and the elastic support plate are manufactured by one of the following processes: integral injection molding and overmolding injection molding.

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