Dual-chamber back-suction cosmetic pump and cosmetic container

Abstract

The utility model discloses a double -cabin back -suction cosmetic pump and cosmetic container, under the liquid outlet state, press the interface under the action of external force, make the volume of back -suction cabin and power cabin be compressed to make the cosmetic in power cabin enter back -suction cabin through power channel, then enter liquid outlet channel through liquid outlet valve, under the reset state, under the action of reset device, make the volume of back -suction cabin be expanded to make the cosmetic in liquid outlet channel back -suction to back -suction cabin, and make the volume of power cabin be expanded to make the cosmetic in external cosmetic jar enter power cabin through liquid inlet valve. Double -cabin back -suction cosmetic pump can pump out the cosmetic in cosmetic jar under the action of pressing device, and can back -suction the cosmetic remaining in pressing device into double -cabin back -suction cosmetic pump. The cosmetic pump itself is used as buffer zone between cosmetic jar and liquid outlet pipeline, and the contaminated cosmetic is enclosed in buffer zone, that is, in back -suction cabin, thereby avoiding expanding pollution.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic storage, and in particular to a dual-chamber back-suction cosmetic pump and cosmetic container. Background Technology

[0002] Traditional cosmetic pumps often lack a backflow function, resulting in some cosmetic residue remaining in the dispensing line and being exposed to air. This means that the next time you use a pump, you are actually using contaminated cosmetic. Even cosmetic pumps with backflow functions often simply draw the cosmetic directly back into the container, effectively returning contaminated cosmetic to the container and thus expanding the contamination. Utility Model Content

[0003] To address the technical problem in existing technologies where directly drawing cosmetics back into the cosmetic container leads to increased contamination, this utility model provides a dual-compartment back-suction cosmetic pump and cosmetic container. The specific technical solution is as follows:

[0004] On one hand, a dual-chamber back-suction cosmetic pump is provided, comprising: a back-suction chamber and a power chamber, wherein the back-suction chamber and the power chamber are connected by a power channel; the power chamber is connected to an external cosmetic container through an inlet valve; and the back-suction chamber is connected to an outlet channel through an outlet valve.

[0005] The pressing interface has one end connected to the cosmetic output port and the other end connected to the suction chamber, which is used to receive external pressure to compress the volume of the suction chamber and the power chamber.

[0006] A reset device for expanding the volume of the back suction chamber and the power chamber;

[0007] The cosmetic pump has a first state, a second state, a liquid dispensing state, and a reset state; the first state is converted to the second state via the liquid dispensing state; the second state is converted to the first state via the reset state.

[0008] In the first state, the liquid outlet valve is closed, the liquid inlet valve is open, and the power channel is closed; in the second state, the liquid outlet valve is open, the liquid inlet valve is closed, and the power channel is open.

[0009] In the liquid dispensing state, the liquid dispensing valve is open, the liquid inlet valve is closed, and the power channel is open. Under the action of external force, the pressing interface compresses the volume of the suction chamber and the power chamber, so that the cosmetics in the power chamber enter the suction chamber through the power channel and then enter the liquid dispensing channel through the liquid dispensing valve.

[0010] In the reset state, the liquid outlet valve is open, the liquid inlet valve is open, and the power channel is closed. Under the action of the reset device, the volume of the back suction chamber is expanded so that the cosmetics in the liquid outlet channel are back sucked into the back suction chamber through the liquid outlet valve, and the volume of the power chamber is expanded so that the cosmetics in the external cosmetic container enter the power chamber through the liquid inlet valve.

[0011] More preferably, the back-suction chamber includes a back-suction outer shell and a back-suction piston, the back-suction piston being sleeved inside the back-suction outer shell and being movable along the inner wall of the back-suction outer shell under the action of the pressing interface;

[0012] The back-suction chamber also includes a liquid discharge valve switch; a back-suction port is provided on the top of the back-suction shell; when the liquid discharge valve is closed, the liquid discharge valve switch blocks the back-suction port, thereby closing the liquid discharge valve.

[0013] More preferably, the back suction piston is provided with a liquid outlet valve switch base; the liquid outlet valve switch is an umbrella-shaped pin; the umbrella cover of the umbrella-shaped pin is provided on the outer wall of the back suction shell, and the umbrella rod of the umbrella-shaped pin is inserted into the back suction port and fixed on the liquid outlet valve switch base;

[0014] The suction piston is provided with a suction channel interface for fixed connection with the power channel;

[0015] The liquid outlet valve switch base is also provided with a base channel connection port, and the interior of the back suction chamber is connected to the interior of the power channel through the base channel connection port and along the back suction channel interface;

[0016] The diameter of the umbrella pole is smaller than the diameter of the suction port; the diameter of the umbrella canopy is larger than the diameter of the suction port.

[0017] More preferably, the reset device specifically includes a back suction chamber reset device, used to reset the position of the back suction chamber;

[0018] In the liquid discharge state, the pressing interface, under the action of external force, brings the back suction shell closer to the power channel, thereby compressing the volume of the back suction chamber and the back suction chamber reset device;

[0019] In the reset state, the back suction chamber reset device springs back, causing the back suction outer shell to move away from the power channel, thereby expanding the volume of the back suction chamber.

[0020] More preferably, the back suction chamber reset device is a spring; one end of the back suction chamber reset device abuts against the back suction outer shell, and the other end abuts against the power channel;

[0021] The top of the back suction shell extends outward to form a top seat for the back suction chamber reset device, and one end of the back suction chamber reset device rests on the top seat for the back suction chamber reset device.

[0022] The power channel also includes a base for a back suction chamber reset device, with the other end of the back suction chamber reset device resting on the base of the back suction chamber reset device.

[0023] The base of the back suction chamber reset device extends toward the liquid outlet channel to form a back suction chamber reset device base wall, and a channel back suction sleeve track is provided on the outer wall of the back suction chamber reset device base wall.

[0024] The top seat of the back suction chamber reset device extends toward the power channel to form a back suction chamber reset device top seat wall. The inner wall of the back suction chamber reset device top seat wall is provided with a back suction channel sleeve track corresponding to the channel back suction sleeve track.

[0025] The base wall of the back suction chamber reset device is sleeved inside the top wall of the back suction chamber reset device through the back suction channel sleeve rail and the channel back suction sleeve rail;

[0026] The back suction chamber reset device is disposed between the outer wall of the back suction shell and the base wall of the back suction chamber reset device.

[0027] More preferably, the power chamber includes a buffer shell, a power piston, a power pin, and a liquid inlet valve switch. The power piston is sleeved inside the buffer shell and has a power outlet hole. The power pin is inserted into the power channel along the power outlet hole and is engaged in the power channel by a power locking ring. When the power channel is closed, the power pin blocks the power channel.

[0028] More preferably, the power pin is provided with a guide groove for the cosmetic to pass through the power locking ring; a sealing ring is sleeved on the end of the power pin near the liquid inlet valve; the sealing ring is provided with multiple liquid outlet grooves for the cosmetic in the power chamber to enter the power channel.

[0029] More preferably, the liquid inlet valve switch includes a blocking ball and a limiting ring, the limiting ring being sleeved inside the power compartment near the liquid inlet valve, so that the blocking ball is restricted to move between the limiting ring and the liquid inlet valve; when the liquid inlet valve is closed, the blocking ball blocks the liquid inlet valve;

[0030] In the liquid discharge state, the power piston moves toward the liquid inlet valve so that the blocking ball blocks the liquid inlet valve, thereby closing the liquid inlet valve.

[0031] More preferably, the reset device specifically includes a power compartment reset device, used to reset the position of the power compartment;

[0032] The power compartment reset device is a spring; one end of the power compartment reset device abuts against the buffer shell, and the other end abuts against the power channel;

[0033] The power channel also includes a power compartment reset device top seat, and the other end of the power compartment reset device rests on the power compartment reset device top seat;

[0034] The top of the buffer shell extends outward to form the base of the power compartment reset device, and one end of the power compartment reset device rests on the base of the power compartment reset device.

[0035] In the liquid discharge state, the pressing interface, under the action of external force, brings the power channel closer to the power chamber, thereby compressing the volume of the power chamber and the power chamber reset device;

[0036] In the reset state, the power compartment reset device springs back, causing the power channel to move away from the power compartment, thereby expanding the volume of the power compartment.

[0037] On the other hand, a dual-compartment back-suction cosmetic container is provided, comprising: a cosmetic jar, a pressing device and the dual-compartment back-suction cosmetic pump, wherein the pressing device is provided with the liquid outlet channel;

[0038] The dual-compartment back-suction cosmetic pump can pump out the cosmetics from the cosmetic container under the action of the pressing device, and can also suck back the cosmetics remaining in the pressing device into the dual-compartment back-suction cosmetic pump.

[0039] This utility model includes at least one of the following technical effects: the cosmetic pump itself is used as a buffer zone between the cosmetic container and the liquid outlet pipe, and the contaminated cosmetic is sealed in the buffer zone, that is, sealed in the back suction chamber, thereby avoiding the spread of contamination. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a cross-sectional view of a dual-chamber back-suction cosmetic pump of the present invention in its first state;

[0042] Figure 2This is a schematic diagram of the inlet valve switch of a dual-chamber back-suction cosmetic pump according to this utility model;

[0043] Figure 3 This is a schematic diagram of the power pin structure of a dual-chamber back-suction cosmetic pump according to this utility model;

[0044] Figure 4 This is a schematic diagram of the structure of a dual-compartment back-suction cosmetic container according to the present invention.

[0045] Dual-compartment back-suction cosmetic pump 1, back-suction compartment 11, back-suction housing 111, back-suction port 1111, back-suction compartment reset device top seat 1112, back-suction compartment reset device top seat wall 11121, back-suction channel connecting rail 11122, back-suction piston 112, liquid outlet valve switch base 1121, base channel connection port 11211, back-suction channel interface 1122, liquid outlet valve switch 113, umbrella cover 1131, umbrella rod 1132, power compartment 12, buffer housing 121, power compartment reset device base 1211, power piston 122, power liquid outlet hole 1221. Power pin 123, guide channel 1231, sealing ring 1232, liquid outlet channel 12321, liquid inlet valve switch 124, blocking ball 1241, limit ring 1242, power channel 13, back suction chamber reset device base 131, back suction chamber reset device base wall 1311, channel back suction sleeve track 13111, power snap ring 132, power chamber reset device top seat 133, pressing interface 14, liquid outlet valve 15, liquid inlet valve 16, reset device 17, back suction chamber reset device 171, power chamber reset device 172, pressing device 2, cosmetic container 3. Detailed Implementation

[0046] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0047] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or sets.

[0048] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0049] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0050] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0052] Example 1:

[0053] like Figure 1-3 As shown, this embodiment provides a dual-chamber back-suction cosmetic pump 1, including: a back-suction chamber 11 and a power chamber 12, wherein the back-suction chamber 11 and the power chamber 12 are connected by a power channel 13; the power chamber 12 is connected to an external cosmetic container 2 through an inlet valve 16; and the back-suction chamber 11 is connected to an outlet channel through an outlet valve 15.

[0054] The pressing interface has one end connected to the cosmetic output port and the other end connected to the suction chamber 11, which is used to receive external pressure to compress the volume of the suction chamber 11 and the power chamber 12.

[0055] Reset device 17, used to expand the volume of the back suction chamber 11 and the power chamber 12;

[0056] The cosmetic pump has a first state, a second state, a liquid dispensing state, and a reset state; the first state is converted to the second state via the liquid dispensing state; the second state is converted to the first state via the reset state.

[0057] In the first state, the liquid outlet valve 15 is closed, the liquid inlet valve 16 is open, and the power channel 13 is closed; in the second state, the liquid outlet valve 15 is open, the liquid inlet valve 16 is closed, and the power channel 13 is open.

[0058] In the liquid dispensing state, the liquid dispensing valve 15 is open, the liquid inlet valve 16 is closed, and the power channel 13 is open. Under the action of external force, the press interface compresses the volume of the suction chamber 11 and the power chamber 12, so that the cosmetics in the power chamber 12 enter the suction chamber 11 through the power channel 13, and then enter the liquid dispensing channel through the liquid dispensing valve 15.

[0059] In the reset state, the liquid outlet valve 15 is open, the liquid inlet valve 16 is open, and the power channel 13 is closed. Under the action of the reset device 17, the volume of the back suction chamber 11 is expanded, so that the cosmetics in the liquid outlet channel are back sucked into the back suction chamber 11 through the liquid outlet valve 15, and the volume of the power chamber 12 is expanded so that the cosmetics in the external cosmetic container 2 enter the power chamber 12 through the liquid inlet valve 16.

[0060] Traditional cosmetic pumps often lack a backflow function, resulting in some cosmetic residue remaining in the outlet pipe and being exposed to air. This means that the next time you use a pump, you are actually using contaminated cosmetic. Even cosmetic pumps with backflow functions often directly suck the cosmetic back into the cosmetic container, which is essentially the same as directly sucking back contaminated cosmetic, thus expanding the contamination.

[0061] Therefore, in this embodiment, the contaminated cosmetics are not drawn back into the cosmetic tank 2. Instead, the cosmetic pump itself is used as a buffer zone between the cosmetic tank 2 and the liquid outlet pipe to enclose the contaminated cosmetics in the buffer zone, that is, in the back suction chamber 11, thereby avoiding the spread of contamination.

[0062] More specifically, when the user presses the press interface, the liquid outlet valve 15 opens, the liquid inlet valve 16 closes, and the power channel 13 opens. Due to the pressure, the back suction chamber 11 is compressed, and the air pressure inside the back suction chamber 11 increases, causing the cosmetics in the back suction chamber 11 to enter the liquid outlet channel. At the same time, this pressure is transmitted to the power chamber 12 through the back suction chamber 11 and the power channel 13, thereby further compressing the power chamber 12 and increasing the pressure in the power chamber 12, so that the cosmetics in the power chamber 12 enter the power channel 13.

[0063] When the user stops pressing, the liquid outlet valve 15 opens, the liquid inlet valve 16 opens, and the power channel 13 closes. The reset device 17 restores the volume of the back suction chamber 11 and the power chamber 12 from the compressed state. Since the power channel 13 is closed and the pressure in the back suction chamber decreases, the back suction chamber 11 can only draw the cosmetics in the liquid outlet channel back into the back suction chamber 11 through the liquid outlet valve 15 to complete the back suction. At the same time, due to the decrease in pressure in the power chamber 12, the liquid outlet valve 15 opens due to the decrease in pressure, and the cosmetics in the external cosmetic container 2 enter the power chamber 12 through the liquid inlet valve 16.

[0064] Example 2:

[0065] like Figure 1-2 As shown, this embodiment is based on embodiment 1 and provides a dual-chamber back-suction cosmetic pump 1. The back-suction chamber 11 includes a back-suction outer shell 111 and a back-suction piston 112. The back-suction piston 112 is sleeved inside the back-suction outer shell 111 and can move along the inner wall of the back-suction outer shell 111 under the action of the pressing interface.

[0066] More preferably, such as Figure 2 As shown, the back suction chamber 11 also includes a liquid discharge valve switch 113; a back suction port 1111 is provided on the top of the back suction shell 111; when the liquid discharge valve 15 is closed, the liquid discharge valve switch 113 blocks the back suction port 1111, so that the liquid discharge valve 15 is closed. The back suction piston 112 is provided with a liquid outlet valve switch base 1121; the liquid outlet valve switch 113 is an umbrella-shaped pin; the umbrella cover 1131 of the umbrella-shaped pin is provided on the outer wall of the back suction housing 111, and the umbrella rod 1132 of the umbrella-shaped pin is inserted into the back suction port 1111 and fixed on the liquid outlet valve switch base 1121; the back suction piston 112 is provided with a back suction channel interface 1122 for fixed connection with the power channel 13; the liquid outlet valve switch base 1121 is also provided with a base channel connection port 11211, and the interior of the back suction chamber 11 communicates with the interior of the power channel 13 through the base channel connection port 11211 and along the back suction channel interface 1122; the rod diameter of the umbrella rod 1132 is smaller than the diameter of the back suction port 1111; the diameter of the umbrella cover 1131 is larger than the diameter of the back suction port 1111.

[0067] In this embodiment, in the first state, the umbrella cap 1131 of the umbrella pin covers the suction port 1111, thereby blocking the suction port 1111 and closing the liquid outlet valve 15. When in the liquid outlet state, the suction shell 111 moves towards the power channel 13 under the action of the pressing interface, causing the umbrella cap 1131 to fail to cover and block the suction port 1111, thereby causing the liquid outlet valve 15 to open and the cosmetic in the suction chamber 11 to flow out. At the same time, the cosmetic in the power channel 13 enters the suction chamber 11 along the base channel connection port 11211. When in the reset state, the umbrella cap 1131 of the umbrella pin approaches the suction port 1111 and finally covers and blocks the suction port 1111 to close the liquid outlet valve 15.

[0068] More preferably, the reset device 17 specifically includes a back-suction chamber reset device 171, used to reset the position of the back-suction chamber 11; in the liquid discharge state, under the action of external force, the pressing interface causes the back-suction outer shell 111 to move closer to the power channel 13, thereby compressing the volume of the back-suction chamber 11 and the back-suction chamber reset device 171; in the reset state, the back-suction chamber reset device 171 springs back, causing the back-suction outer shell 111 to move away from the power channel 13, thereby expanding the volume of the back-suction chamber 11. The back-suction chamber reset device 171 is a spring.

[0069] Generally, a spring is used as the return chamber reset device 171. In the liquid dispensing state, the pressing interface, under the action of external force, causes the return chamber shell 111 to move closer to the power channel 13, thereby compressing the volume of the return chamber 11 and the spring, thus applying force to the spring. In the reset state, the return chamber reset device 171 rebounds, causing the return chamber shell 111 to move away from the power channel 13, thereby expanding the volume of the return chamber 11. This results in a decrease in air pressure inside the return chamber 11, and because the power channel 13 is closed, only cosmetics located in the liquid dispensing channel can be drawn back into the return chamber 11.

[0070] One end of the back suction chamber reset device 171 abuts against the back suction outer shell 111, and the other end abuts against the power channel 13; the top of the back suction outer shell 111 extends outward to form a back suction chamber reset device top seat 1112, and one end of the back suction chamber reset device 171 abuts against the back suction chamber reset device top seat 1112; the power channel 13 also includes a back suction chamber reset device base 131, and the other end of the back suction chamber reset device 171 abuts against the back suction chamber reset device base 131; the back suction chamber reset device base 131 extends towards the liquid outlet channel to form a back suction chamber reset device base wall 1311, and a passage is provided on the outer wall of the back suction chamber reset device base wall 1311. The back suction sleeve track 13111; the back suction chamber reset device top seat 1112 extends towards the power channel 13 to form a back suction chamber reset device top seat wall 11121, and a back suction channel sleeve track 11122 corresponding to the back suction sleeve track 13111 is provided on the inner wall of the back suction chamber reset device top seat wall 11121; the back suction chamber reset device base wall 1311 is sleeved in the back suction chamber reset device top seat wall 11121 through the back suction channel sleeve track 11122 and the back suction channel sleeve track 13111; the back suction chamber reset device 171 is disposed between the outer wall of the back suction outer shell 111 and the back suction chamber reset device base wall 1311.

[0071] Example 3

[0072] like Figure 1 , 3 As shown, this embodiment, based on Embodiment 1, provides a dual-chamber back-suction cosmetic pump 1. The power chamber 12 includes a buffer housing 121, a power piston 122, a power pin 123, and an inlet valve switch 124. The power piston 122 is sleeved inside the buffer housing 121, and a power outlet hole 1221 is provided in the power piston 122. The power pin 123 is inserted into the power channel 13 along the power outlet hole 1221 and is engaged in the power channel 13 by a power retaining ring 132. When the power channel 13 is closed, the power pin 123 blocks the power channel 13.

[0073] In this embodiment, in the first state, the reset state, when the power channel 13 is closed, the power pin 123 blocks the power channel 13; in the second state, the liquid discharge state, since the power chamber 12 is in a compressed state, the power pin 123 does not block the power channel 13, so the cosmetics in the power chamber 12 can enter the power channel 13 and thus enter the back suction chamber 11.

[0074] More preferably, such as Figure 3As shown, the power pin 123 is provided with a guide groove 1231 for allowing cosmetics to pass through the power locking ring 132; a sealing ring 1232 is sleeved on one end of the power pin 123 near the liquid inlet valve 16; the sealing ring 1232 is provided with multiple liquid outlet grooves 12321 for allowing cosmetics from the power chamber 12 to enter the power channel 13. Simultaneously, due to the presence of the guide groove 1231, the cross-section of the power pin 123 is I-shaped, allowing flow from the gap in the I-shape.

[0075] More preferably, the liquid inlet valve switch 124 includes a blocking ball 1241 and a limiting ring 1242. The limiting ring 1242 is sleeved inside the power chamber 12 near the liquid inlet valve 16, so that the blocking ball 1241 is restricted to move between the limiting ring 1242 and the liquid inlet valve 16. When the liquid inlet valve 16 is closed, the blocking ball 1241 blocks the liquid inlet valve 16. In the liquid outlet state, the power piston 123 moves toward the liquid inlet valve 16, so that the blocking ball 1241 blocks the liquid inlet valve 16, thereby closing the liquid inlet valve switch 124.

[0076] When the power chamber 12 is compressed, the high air pressure inside the power chamber 12 causes the blocking ball 1241 to be pushed against the liquid inlet valve 16, thus blocking the liquid inlet valve 16 and preventing the cosmetics in the cosmetic container 2 from entering the power chamber 12. When the air pressure in the power chamber 12 gradually decreases, the high air pressure inside the cosmetic container 2 causes the blocking ball 1241 to stop blocking the liquid inlet valve 16, allowing the cosmetics in the cosmetic container 2 to enter the power chamber 12, thus replenishing the cosmetics in the power chamber 12.

[0077] More preferably, the reset device 17 specifically includes a power chamber reset device 172 for resetting the position of the power chamber 12; the power chamber reset device 172 is a spring. In the liquid dispensing state, under the action of external force, the pressing interface brings the power channel 13 closer to the power chamber 12 to compress the volume of the power chamber 12 and the power chamber reset device 172; in the reset state, the power chamber reset device 172 springs back, moving the power channel 13 away from the power chamber 12, thereby expanding the volume of the power chamber 12.

[0078] One end of the power compartment reset device 172 abuts against the buffer housing 121, and the other end abuts against the power channel 13; the power channel 13 also includes a power compartment reset device top seat 133, and the other end of the power compartment reset device 172 abuts against the power compartment reset device top seat 133; the top of the buffer housing 121 extends outward to form a power compartment reset device base 1211, and one end of the power compartment reset device 172 abuts against the power compartment reset device base 1211;

[0079] Example 4:

[0080] like Figure 4 As shown, this embodiment provides a dual-compartment back-suction cosmetic container, including: a cosmetic container 2, a pressing device 3, and the dual-compartment back-suction cosmetic pump 1. The pressing device 3 is provided with the liquid outlet channel. The dual-compartment back-suction cosmetic pump 1 can pump out the cosmetic in the cosmetic container 2 under the action of the pressing device 3, and can suck back the cosmetic remaining in the pressing device 3 into the dual-compartment back-suction cosmetic pump 1.

[0081] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0082] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dual-chamber back-suction cosmetic pump, characterized in that, include: The system includes a back-suction chamber and a power chamber, which are connected by a power channel; the power chamber is connected to an external cosmetic container via a liquid inlet valve. The back suction chamber is connected to the liquid outlet channel via a liquid outlet valve; The pressing interface has one end connected to the cosmetic output port and the other end connected to the suction chamber, which is used to receive external pressure to compress the volume of the suction chamber and the power chamber. A reset device for expanding the volume of the back suction chamber and the power chamber; The cosmetic pump has a first state, a second state, a liquid dispensing state, and a reset state; the first state is converted to the second state via the liquid dispensing state; the second state is converted to the first state via the reset state. In the first state, the liquid outlet valve is closed, the liquid inlet valve is open, and the power channel is closed; in the second state, the liquid outlet valve is open, the liquid inlet valve is closed, and the power channel is open. In the liquid dispensing state, the liquid dispensing valve is open, the liquid inlet valve is closed, and the power channel is open. Under the action of external force, the pressing interface compresses the volume of the suction chamber and the power chamber, so that the cosmetics in the power chamber enter the suction chamber through the power channel and then enter the liquid dispensing channel through the liquid dispensing valve. In the reset state, the liquid outlet valve is open, the liquid inlet valve is open, and the power channel is closed. Under the action of the reset device, the volume of the back suction chamber is expanded so that the cosmetics in the liquid outlet channel are back sucked into the back suction chamber through the liquid outlet valve, and the volume of the power chamber is expanded so that the cosmetics in the external cosmetic container enter the power chamber through the liquid inlet valve.

2. The dual-chamber back-suction cosmetic pump according to claim 1, characterized in that, The back suction chamber includes a back suction outer shell and a back suction piston. The back suction piston is sleeved inside the back suction outer shell and can move along the inner wall of the back suction outer shell under the action of the pressing interface. The back-suction chamber also includes a liquid discharge valve switch; a back-suction port is provided on the top of the back-suction shell; when the liquid discharge valve is closed, the liquid discharge valve switch blocks the back-suction port, thereby closing the liquid discharge valve.

3. A dual-chamber back-suction cosmetic pump according to claim 2, characterized in that, The back suction piston is provided with a liquid outlet valve switch base; the liquid outlet valve switch is an umbrella-shaped pin; the umbrella cover of the umbrella-shaped pin is provided on the outer wall of the back suction shell, and the umbrella rod of the umbrella-shaped pin is inserted into the back suction port and fixed on the liquid outlet valve switch base; The suction piston is provided with a suction channel interface for fixed connection with the power channel; The liquid outlet valve switch base is also provided with a base channel connection port, and the interior of the back suction chamber is connected to the interior of the power channel through the base channel connection port and along the back suction channel interface; The diameter of the umbrella pole is smaller than the diameter of the suction port; the diameter of the umbrella canopy is larger than the diameter of the suction port.

4. A dual-chamber back-suction cosmetic pump according to claim 2, characterized in that, The reset device specifically includes a back suction chamber reset device, used to reset the position of the back suction chamber; In the liquid discharge state, the pressing interface, under the action of external force, brings the back suction shell closer to the power channel, thereby compressing the volume of the back suction chamber and the back suction chamber reset device; In the reset state, the back suction chamber reset device springs back, causing the back suction outer shell to move away from the power channel, thereby expanding the volume of the back suction chamber.

5. A dual-chamber back-suction cosmetic pump according to claim 4, characterized in that, The back suction chamber reset device is a spring; one end of the back suction chamber reset device presses against the back suction outer shell, and the other end presses against the power channel; The top of the back suction shell extends outward to form a top seat for the back suction chamber reset device, and one end of the back suction chamber reset device rests on the top seat for the back suction chamber reset device. The power channel also includes a base for a back suction chamber reset device, with the other end of the back suction chamber reset device resting on the base of the back suction chamber reset device. The base of the back suction chamber reset device extends toward the liquid outlet channel to form a back suction chamber reset device base wall, and a channel back suction sleeve track is provided on the outer wall of the back suction chamber reset device base wall. The top seat of the back suction chamber reset device extends toward the power channel to form a back suction chamber reset device top seat wall. The inner wall of the back suction chamber reset device top seat wall is provided with a back suction channel sleeve track corresponding to the channel back suction sleeve track. The base wall of the back suction chamber reset device is sleeved inside the top wall of the back suction chamber reset device through the back suction channel sleeve rail and the channel back suction sleeve rail; The back suction chamber reset device is disposed between the outer wall of the back suction shell and the base wall of the back suction chamber reset device.

6. A dual-chamber back-suction cosmetic pump according to claim 1, characterized in that, The power chamber includes a buffer shell, a power piston, a power pin, and a liquid inlet valve switch. The power piston is sleeved inside the buffer shell and has a power outlet hole. The power pin is inserted into the power channel along the power outlet hole and is engaged in the power channel by a power locking ring. When the power channel is closed, the power pin blocks the power channel.

7. A dual-chamber back-suction cosmetic pump according to claim 6, characterized in that, The power pin is provided with a guide groove for cosmetics to pass through the power locking ring; a sealing ring is sleeved on the end of the power pin near the liquid inlet valve; the sealing ring is provided with multiple liquid outlet grooves for cosmetics in the power chamber to enter the power channel.

8. A dual-chamber back-suction cosmetic pump according to claim 6, characterized in that, The liquid inlet valve switch includes a blocking ball and a limiting ring. The limiting ring is sleeved inside the power compartment near the liquid inlet valve, so that the blocking ball is restricted to move between the limiting ring and the liquid inlet valve. When the liquid inlet valve is closed, the blocking ball blocks the liquid inlet valve. In the liquid discharge state, the power piston moves toward the liquid inlet valve so that the blocking ball blocks the liquid inlet valve, thereby closing the liquid inlet valve.

9. A dual-chamber back-suction cosmetic pump according to claim 6, characterized in that, The reset device specifically includes a power compartment reset device, used to reset the position of the power compartment; The power compartment reset device is a spring; one end of the power compartment reset device abuts against the buffer shell, and the other end abuts against the power channel; The power channel also includes a power compartment reset device top seat, and the other end of the power compartment reset device rests on the power compartment reset device top seat; The top of the buffer shell extends outward to form the base of the power compartment reset device, and one end of the power compartment reset device rests on the base of the power compartment reset device. In the liquid discharge state, the pressing interface, under the action of external force, brings the power channel closer to the power chamber, thereby compressing the volume of the power chamber and the power chamber reset device; In the reset state, the power compartment reset device springs back, causing the power channel to move away from the power compartment, thereby expanding the volume of the power compartment.

10. A dual-compartment back-suction cosmetic container, characterized in that, include: The cosmetic container, the pressing device, and the dual-compartment back-suction cosmetic pump according to any one of claims 1-9, wherein the pressing device is provided with the liquid outlet channel; The dual-compartment back-suction cosmetic pump can pump out the cosmetics from the cosmetic container under the action of the pressing device, and can also suck back the cosmetics remaining in the pressing device into the dual-compartment back-suction cosmetic pump.

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