Emulsion pump and emulsion bottle using same

Abstract

The utility model relates to a lotion pump and a lotion bottle using the lotion pump, the lotion pump comprises a pump body internally provided with a containing cavity and a pressing head connected to the pump body, the lower end of the pump body is provided with an inlet, the upper end of the pump body is provided with an outlet, the inlet of the pump body is provided with a liquid inlet valve, the outlet of the pump body is connected with a valve cover, and a liquid outlet through hole is formed in the valve cover. The liquid pump is characterized in that the pump body is made of elastic plastics, a containing cavity is formed in the pump body, the diameter of the middle of the containing cavity is large, the diameters of the two ends of the containing cavity are gradually reduced, and therefore the pump body has the function of a synchronous spring. Compared with the prior art, the emulsion pump has the advantages that the whole pump body is made of the elastic plastic, the containing cavity with the large caliber in the middle and the gradually-decreased calibers at the two ends is formed in the pump body, liquid can be conveniently discharged, meanwhile, the pump body can have the function of a synchronous spring, and the whole emulsion pump is environmentally friendly, free of metal springs, few in parts and convenient to produce and machine.

Description

Technical Field

[0001] The utility model relates to a lotion pump and a lotion bottle using the lotion pump. Background Art

[0002] As people's living standards improve, their demand for cosmetics is also increasing, and a wide variety of cosmetics with different packaging have appeared on the market. To facilitate the removal of cosmetics from lotion bottles, most existing lotion bottles are equipped with a lotion pump at the mouth. For example, Chinese Patent Publication No. CN212830199U (Patent No. ZL202020714423.0) discloses a lotion pump structure, which includes a pump body, a piston seat, a piston rod, a connecting seat, a connecting rod, and an elastic return member. The piston seat and piston rod are disposed within the pump body, and the connecting seat is sealingly mounted on the upper end of the pump body. The lower end of the connecting rod extends into the pump body and cooperates with the piston seat and piston rod. The upper end of the connecting rod extends upward from the pump body. The elastic return member is disposed outside the pump body and is sleeved on the connecting rod. The lower end of the elastic return member abuts against the connecting seat, and the upper end of the elastic return member abuts against the connecting rod. The elastic return member is provided with a guide sleeve on the outside of the elastic return member to guide the movement of the elastic return member, thereby preventing the elastic return member from tilting or eccentricity during movement. Because the elastic return member in this structure is a metal elastic return member, a guide sleeve must be provided on the outside of the elastic return member to guide the movement of the elastic return member, thereby preventing the elastic return member from tilting or eccentricity during movement. The provision of the guide sleeve increases manufacturing costs. Moreover, vacuum pumps mostly operate in humid environments, and metal elastic return members are prone to rusting. Furthermore, the manufacturing cost is high, which is not environmentally friendly. Furthermore, the entire lotion pump structure is complex and difficult to process. Therefore, the existing lotion pump structure needs further improvement. Utility Model Content

[0003] The first technical problem to be solved by the utility model is to provide an environmentally friendly lotion pump without a metal spring, with a simple structure and easy production.

[0004] The second technical problem to be solved by the present invention is to provide a lotion bottle pump which has no metal spring in its structure, is simple in structure, is environmentally friendly and is easy to produce.

[0005] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a lotion pump, including a pump body with a cavity provided therein, a pressing head connected to the pump body, an inlet provided at the lower end of the pump body, an outlet provided at the upper end of the pump body, a liquid inlet valve provided at the inlet of the pump body, a valve cover connected to the outlet of the pump body, a liquid outlet hole provided therein, and a liquid outlet valve provided therein, characterized in that: the pump body is made of elastic plastic, and a cavity with a large diameter in the middle and gradually decreasing diameters at both ends is formed inside the pump body, so that the pump body has a synchronous spring effect.

[0006] In order to facilitate the installation and connection between the valve cover and the pump body, an annular sealing groove is formed on the lower end surface of the valve cover, and the upper end inlet of the pump body is sealed and inserted into the annular sealing groove at the lower end of the valve cover.

[0007] In order to facilitate the installation and connection between the valve cover and the pressing head, an annular mounting groove is formed on the upper end surface of the valve cover, and an annular clamping ring is formed on the lower end surface of the pressing head. The annular clamping ring of the pressing head is tightly inserted into the annular mounting groove of the valve cover.

[0008] A liquid outlet channel is formed in the pressing head, the inlet of the liquid outlet channel is communicated with the liquid outlet through hole of the valve cover, and the outlet of the liquid outlet channel is arranged on the outer wall of the pressing head, which can facilitate the pumping out of the lotion.

[0009] In order to facilitate the installation and connection between the pump body and the lotion bottle, the present invention also includes a connecting sleeve arranged outside the pump body, and an annular positioning groove is formed on the lower side end of the outer wall of the pump body, and a through hole is formed in the middle of the connecting sleeve, and a positioning mounting ring is formed on the inner wall of the through hole that can be inserted into the annular positioning groove. After the connecting sleeve is arranged on the outside of the pump body, the positioning mounting ring is fixed in the annular positioning groove on the outer wall of the pump body.

[0010] As a further improvement, a raised retaining ring is provided on the inner wall of the through hole of the connecting sleeve below the annular positioning groove.

[0011] Preferably, the pump body, pressing head, valve cover and connecting sleeve are all made of plastic.

[0012] As a further improvement, the inner wall of the through hole of the connecting sleeve is provided with an internal thread on the lower side of the retaining ring.

[0013] As a further improvement, the top of the connecting sleeve is flush with the middle of the pump body, and the inner diameter of the through hole of the connecting sleeve above the positioning mounting ring is larger than the outer diameter of the middle of the pump body, and there is a gap between the two.

[0014] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a lotion bottle, including a bottle body, an opening at the top of the bottle body, and a lotion pump connected to the opening at the top of the bottle body. The characteristic is that the top opening of the bottle body is provided with an external thread, the lotion pump adopts the structure of the lotion pump, and the connecting sleeve of the lotion pump is threadedly connected to the outside of the top opening of the bottle body.

[0015] Compared with the existing technology, the advantages of the present invention are: the pump body is made of elastic plastic as a whole, and the cavity formed inside the pump body has a large diameter in the middle and gradually decreasing diameters at both ends, which can not only facilitate liquid discharge, but also enable the pump body to have a synchronous spring function. The entire lotion pump is environmentally friendly, has no metal springs, has few parts, and is easy to produce and process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic structural diagram of the lotion pump in an embodiment of the present utility model.

[0017] Figure 2 This is a schematic structural diagram of a lotion bottle in an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 The lotion pump comprises a pump body 1, a pressure head 2, a valve cover 3, and a connecting sleeve 4. These components are all made of plastic, with the pump body 1 being made of elastic plastic and the pressure head 2, valve cover 3, and connecting sleeve 4 being made of harder plastic. The pump body 1 is generally bottle-shaped, with a larger center portion, tapering upward, and then tapering downward. The interior of the pump body 1 defines a cavity with a larger central opening and gradually tapering toward the ends. This cavity serves as both a passage for the lotion and a synchronization spring. The pump body 1 has an inlet at its lower end and an outlet at its upper end. A liquid inlet valve 5 is located at the inlet. The valve cover 3 is connected to the outlet at the upper end of the pump body. A liquid outlet hole is located within the valve cover 3, which contains a liquid outlet valve 6. The pressure head 2 is connected to the valve cover 3.

[0020] The lower end surface of the valve cover 3 is formed with an annular sealing groove 31. The upper inlet of the pump body 1 is sealed and inserted into the annular sealing groove 31 at the lower end of the valve cover. The upper end surface of the valve cover 3 is formed with an annular mounting groove 32. The lower end surface of the pressing head 2 is formed with an annular retaining ring 21. The annular retaining ring of the pressing head is tightly inserted into the annular mounting groove 32 of the valve cover. A liquid outlet channel is formed in the pressing head 2. The inlet of the liquid outlet channel is connected to the liquid outlet through-hole of the valve cover 3. The outlet 22 of the liquid outlet channel is located on the outer wall of the pressing head 2.

[0021] The connecting sleeve 4 is mounted on the outside of the pump body 1. An annular positioning groove 11 is formed on the outer wall of the pump body 1 near the lower end. A through hole is formed in the middle of the connecting sleeve 4. The inner wall of this through hole is formed with a positioning and mounting ring 41 that can be snapped into the annular positioning groove. After the connecting sleeve 4 is mounted on the outside of the pump body 1, the positioning and mounting ring 41 is snapped into the annular positioning groove 11 on the outer wall of the pump body 1. A raised retaining ring 42 is provided on the inner wall of the through hole of the connecting sleeve 4 below the annular positioning groove. An internal thread 43 is provided on the inner wall of the through hole of the connecting sleeve 4 below the retaining ring 42. The top of the connecting sleeve 4 is flush with the middle of the pump body 1. At the same time, the inner diameter of the through hole of the connecting sleeve 4 above the annular positioning groove is larger than the outer diameter of the middle of the pump body, and there is a gap between the two.

[0022] The utility model also provides a lotion bottle, such as Figure 2As shown, it includes a bottle body 7 with an opening at the top of the bottle body 7. A lotion pump with the above-mentioned structure is connected to the opening at the top of the bottle body. An external thread is provided on the outside of the opening at the top of the bottle body. A connecting sleeve 4 of the lotion pump is threadedly connected to the outside of the opening at the top of the bottle body 7. In addition, a straw 8 connected to the lower end inlet of the pump body 1 is provided inside the bottle body 7. A bottle cap 9 covering the lotion pump is also connected to the top of the bottle body 7.

[0023] When the lotion pump is in use, an outward external force is applied to the pressing head 2, which drives the valve cover 3 downward to squeeze the pump body 1. The pump body 1, made of elastic plastic, is compressed and elastically deformed under the action of the external force. The inner cavity of the pump body 1 is squeezed, and the lotion located in the inner cavity of the pump body 1 can be pumped out through the liquid outlet valve 6, the liquid outlet channel in the pressing head 2, and the outlet 22. Because the inner diameter of the through hole of the connecting sleeve 4 above the positioning mounting ring 41 is larger than the outer diameter of the middle part of the pump body 1, and a gap exists between the two, this gap can accommodate the volume of the pump body 1 after the elastic deformation. When the external force is released, the pump body 1 returns to its original state under the action of the elastic force. At this time, the pressure in the inner cavity of the pump body 1 decreases, and the lotion stored in the bottle can enter the inner cavity of the pump body 1 through the suction tube 8 and the liquid inlet valve 5, awaiting the next pumping cycle.

Claims

1. A lotion pump, comprising a pump body having a chamber therein, a pressing head connected to the pump body, an inlet at the lower end of the pump body, an outlet at the upper end of the pump body, a liquid inlet valve at the inlet of the pump body, a valve cover connected to the outlet of the pump body, a liquid outlet hole in the valve cover, and a liquid outlet valve in the liquid outlet hole, characterized in that: The pump body is made of elastic plastic, and a cavity with a large diameter in the middle and gradually decreasing diameters at both ends is formed inside the pump body, so that the pump body has a synchronous spring effect.

2. The lotion pump according to claim 1, characterized in that: An annular sealing groove is formed on the lower end surface of the valve cover, and the upper inlet of the pump body is sealed and inserted into the annular sealing groove at the lower end of the valve cover.

3. The lotion pump according to claim 1, characterized in that: The upper end surface of the valve cover is formed with an annular mounting groove, and the lower end surface of the pressing head is formed with an annular clamping ring. The annular clamping ring of the pressing head is tightly inserted into the annular mounting groove of the valve cover.

4. The lotion pump according to claim 1, characterized in that: A liquid outlet channel is formed in the pressing head, the inlet of the liquid outlet channel is communicated with the liquid outlet through hole of the valve cover, and the outlet of the liquid outlet channel is arranged on the outer side wall of the pressing head.

5. The lotion pump according to any one of claims 1 to 4, characterized in that: It also includes a connecting sleeve that is sleeved outside the pump body, an annular positioning groove is formed on the lower side end of the outer wall of the pump body, a through hole is formed in the middle of the connecting sleeve, and a positioning mounting ring that can be inserted into the annular positioning groove is formed on the inner wall of the through hole. After the connecting sleeve is sleeved on the outside of the pump body, the positioning mounting ring is fixed in the annular positioning groove on the outer wall of the pump body.

6. The lotion pump according to claim 5, characterized in that: The inner wall of the through hole of the connecting sleeve is provided with a raised retaining ring below the annular positioning groove.

7. The lotion pump according to claim 6, characterized in that: The pump body, the pressing head, the valve cover and the connecting sleeve are all made of plastic material.

8. The lotion pump according to claim 6, characterized in that: The inner wall of the through hole of the connecting sleeve is provided with an internal thread on the lower side of the retaining ring.

9. The lotion pump according to claim 6, characterized in that: The top of the connecting sleeve is flush with the middle of the pump body. At the same time, the inner diameter of the through hole of the connecting sleeve above the positioning installation ring is larger than the outer diameter of the middle of the pump body, and there is a gap between the two.

10. A lotion bottle, comprising a bottle body, an opening at the top of the bottle body, and a lotion pump connected to the opening at the top of the bottle body, characterized in that: The top opening of the bottle body is provided with an external thread. The lotion pump adopts the structure of the lotion pump as claimed in claim 8, and the connecting sleeve of the lotion pump is threadedly connected to the top opening of the bottle body.

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