Cosmetic pump head with check valve

Abstract

A cosmetic pump head with a check valve comprises a body, the body comprises a bottle body and a pump body arranged in the bottle body, the pump body comprises a piston rod moving up and down to discharge liquid, the body comprises a shell installed on the bottle body and a liquid outlet channel connected with an inner cavity of the bottle body, and a liquid outlet groove is formed in the upper end face of the shell in a concave mode. A liquid outlet communicated with the liquid outlet channel is formed in the bottom of the liquid outlet groove, a check valve is installed on the liquid outlet, when the piston rod is pressed, the piston rod moves downwards, and liquid in the bottle body flows into the liquid outlet groove from the liquid outlet channel through the liquid outlet; the piston rod is loosened, and the check valve closes the liquid outlet. According to the cosmetic pump head with the check valve, when the piston rod is pressed, the piston rod moves downwards, and liquid in the bottle body flows into the liquid outlet groove from the liquid outlet channel through the liquid outlet; when the user releases the pressure, the check valve is closed, the liquid outlet is closed, the liquid foundation is effectively prevented from flowing back, the check valve is closed, the liquid foundation is prevented from flowing back, the liquid outlet is closed, and the liquid outlet is prevented from being polluted, dried and agglomerated.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetic bottles, in particular to a cosmetic pump head with a check valve. Background Art

[0002] A pump is a device that transports liquid or pressurizes liquid, and a pump head refers to a structure on the top of a bottle of cosmetics, shampoo, spray, or lotion cans that is used to squeeze out liquid. A liquid pressure pump usually includes a piston rod, a pump head, and other structures. The pump head is directly mounted on the liquid container. Its main working principle is to use the downward pressure of the piston rod to reduce the space in the liquid container and increase the air pressure, thereby squeezing the liquid out of the liquid container.

[0003] But the problem is that when the user releases the pressure and the piston rod returns to its position and moves upward, the liquid will flow back, causing contamination of the liquid outlet. At the same time, the cosmetic liquid in the liquid outlet will dry and clump over time, causing the liquid outlet to be blocked. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of this, the embodiments of the present specification provide a side pressure type cosmetic pump head that prevents liquid backflow, avoids contamination of the liquid outlet, and avoids clogging of the liquid outlet.

[0006] (II) Technical solution

[0007] In order to solve the technical problems, the utility model provides the following technical solutions: a cosmetic pump head with a check valve, comprising a main body, the main body comprising a bottle body, a pump body arranged in the bottle body, the pump body comprising a piston rod that moves up and down to discharge liquid, the main body comprising an outer shell installed on the bottle body, a liquid outlet channel connected to the inner cavity of the bottle body, the upper end surface of the outer shell is concavely provided with a liquid outlet groove, the bottom of the liquid outlet groove is provided with a liquid outlet connected to the liquid outlet channel, and a check valve is installed on the liquid outlet. When the piston rod is pressed, the piston rod moves downward, and the liquid in the bottle body flows from the liquid outlet channel and the liquid outlet into the liquid outlet groove; when the piston rod is released, the check valve closes the liquid outlet.

[0008] Compared with the prior art, the advantages of the utility model are: the liquid outlet at the bottom of the liquid outlet groove is connected with the liquid outlet channel, and a check valve is installed on the liquid outlet. When the piston rod is pressed, the piston rod moves downward, and the liquid in the bottle body flows into the liquid outlet groove from the liquid outlet channel through the liquid outlet; when the piston rod is released, the check valve closes the liquid outlet, which can effectively prevent the backflow of the foundation liquid. When the user releases the pressure, the check valve will close to prevent the foundation liquid from flowing back and close the liquid outlet to avoid contamination and drying of the liquid outlet.

[0009] In some embodiments, the inner wall of the liquid outlet has a limit tooth protruding in the direction of its central axis, and the check valve includes a conical portion, a cylindrical portion arranged on the lower end surface of the conical portion, and a limit ring protruding outward from the wall surface of the cylindrical portion and arranged circumferentially. When the check valve is installed in the liquid outlet, the upper end surface of the conical portion abuts against the outer wall surface of the outer shell, the cylindrical portion is inserted into the liquid outlet, and the limit portion is located below the limit tooth. Through the improvement, when the check valve is upward relative to the liquid outlet, the limit portion of the check valve moves to the limit tooth, and the lower wall surface of the limit tooth abuts against the limit portion, thereby preventing the check valve from loosening when liquid is sprayed out and the check valve from detaching from the liquid outlet, making the device more stable when used.

[0010] In some embodiments, a rotatable roller is provided on the liquid outlet groove, and pin shafts are provided at both ends of the roller. Pin holes cooperating with the pin shafts are provided on the left and right side walls of the liquid outlet groove, and the pin shafts are accommodated in the pin holes. Through the improvement, the liquid in the cosmetics can pass through the liquid outlet to the liquid outlet groove, and the outer side of the roller is stained with the liquid in the liquid outlet groove. The user can directly apply the cosmetic liquid on the facial skin through the roller. The design of the roller makes the application more uniform, avoids the appearance of patches or lines, and provides a more natural makeup effect.

[0011] In some embodiments, the bottom wall of the liquid outlet groove is set in an inwardly concave arc shape. Through the improvement, the inwardly concave arc-shaped liquid outlet groove allows the cosmetic liquid to gather at the bottom of the liquid outlet groove, preventing the cosmetic liquid from escaping when flowing out of the liquid outlet. At the same time, it also makes it more convenient and uniform for the roller to be stained with the cosmetic liquid in the liquid outlet groove.

[0012] In some embodiments, a liquid outlet is installed at the upper end of the piston rod, and a sliding block that can slide back and forth left and right is provided inside the outer shell. Limiting columns protrude outward from the front and rear wall surfaces of the liquid outlet. The sliding block is provided with an inclined limiting groove that cooperates with the limiting column. The limiting column is arranged in the limiting groove. Through the improvement, when the sliding block moves toward the inside of the outer shell, the wall surface of the limiting groove abuts against the wall surface of the limiting column. Since the limiting groove is inclined, the vertical up and down reciprocating movement of the liquid outlet is realized, thereby realizing the up and down pressing of the piston rod to discharge the liquid, which is more convenient and quick, and can accurately control the flow rate of the liquid to avoid excessive use.

[0013] In some embodiments, the pump body includes a large circle, and the sliding block is installed on the upper end surface of the large circle. The upper end surface of the large circle is provided with two oppositely arranged ear plates, and the sliding block is arranged between the two ear plates. The ear plates limit the movement direction of the sliding block. Through the improvement, the sliding block is arranged between the two ear plates. When the sliding block tends to move forward or backward, the inner wall surface of the ear plate is against the front and rear side walls of the sliding block, limiting the movement direction of the sliding block, so that the sliding block can only move in a straight line left and right, making the device more stable during operation.

[0014] In some embodiments, a mounting hole is provided on the left end face of the sliding block, an opening is provided on the side wall of the shell, a button is installed at the opening, a mounting column is provided on the inner end face of the button and cooperates with the mounting hole, the mounting column is inserted into the mounting hole, a mounting ring is circumferentially provided on the outer wall of the mounting column, and a mounting groove cooperating with the mounting ring is provided on the wall of the mounting hole. When the button is installed on the sliding block, the mounting ring is accommodated in the mounting groove. Through the improvement, the button is fixedly connected to the sliding block through the setting of the button, and the sliding block can be sliding by pressing the button, which is more convenient and quick. At the same time, the mounting ring is accommodated in the mounting groove. When the button is equivalent to the sliding block and has a tendency to move, the wall surface of the mounting ring is abutted against the wall surface of the mounting groove, thereby limiting the movement of the button relative to the sliding block, so that the button and the sliding block are more tightly connected.

[0015] In some embodiments, a guide groove is provided on the right end face of the liquid outlet, and a large circle protrudes upward with a guide block that cooperates with the guide groove, and the guide groove is engaged with the guide block. Through the improvement, the guide groove is engaged with the guide block. When the liquid outlet moves upward or downward, the wall surface of the guide block abuts against the wall surface of the guide groove, limiting the horizontal movement of the liquid outlet, thereby playing a vertical upward and downward guiding role for the liquid outlet.

[0016] In some embodiments, the guide block includes a concave positioning groove, and the inner wall surface of the outer shell extends inwardly with two reinforcing strips, the two reinforcing strips are accommodated in the positioning groove, and the outer wall surfaces of the two reinforcing strips are respectively against the two opposite inner wall surfaces of the positioning groove. Through the improvement, the two reinforcing strips are accommodated in the positioning groove, and the outer wall surfaces of the two reinforcing strips are respectively against the two opposite inner wall surfaces of the positioning groove, so that the installation position of the outer shell can be accurately determined. At the same time, the setting of the reinforcing strips can increase the rigidity of the outer shell.

[0017] In some embodiments, a sealing ring is sleeved on the piston rod, and the sealing ring is installed above the liquid outlet part. The inner end surface of the outer shell protrudes downward and has a connecting hole that cooperates with the sealing ring. The connecting hole is inserted into the sealing ring to form a sealed cavity. The lower end of the sealed cavity is connected to the liquid outlet channel, and the upper end of the sealed cavity is connected to the liquid outlet. Through the improvement, a sealed cavity is formed by the cooperation of the sealing ring and the connecting hole, so that the liquid discharge effect of the device is better and the sealing is stronger.

[0018] (III) Beneficial effects

[0019] The utility model provides a cosmetic pump head with a check valve. The button is fixedly connected to the sliding block through the setting of a button. The sliding block can be realized by pressing the button, which is more convenient and quicker. The sliding block is arranged between the two ear plates, and the sliding block moves along the inner wall surface of the ear plate, which guides the movement of the sliding block. The limiting column is arranged in the limiting groove. When the sliding block moves toward the inner direction of the shell, the wall surface of the limiting groove and the wall surface of the limiting column are abutted. Since the limiting groove is arranged in an inclined manner, the vertical up and down reciprocating movement of the liquid outlet part is realized, thereby realizing the up and down pressing of the piston rod to discharge the liquid, which is more convenient and quicker. The large circle is upwardly protruded with a guide block that cooperates with the guide groove The guide groove is engaged with the guide block. When the liquid outlet part moves upward or downward, the wall of the guide block and the wall of the guide groove are against each other, limiting the horizontal movement of the liquid outlet part, thereby guiding the liquid outlet part vertically up and down; the liquid outlet at the bottom of the liquid outlet groove is connected with the liquid outlet channel, and a check valve is installed on the liquid outlet. When the piston rod is pressed, the piston rod moves downward, and the liquid in the bottle flows into the liquid outlet groove from the liquid outlet channel through the liquid outlet; when the piston rod is released, the check valve closes the liquid outlet, which can effectively prevent the backflow of the foundation liquid. When the user releases the pressure, the check valve will close to prevent the foundation liquid from flowing back and close the liquid outlet to avoid contamination and drying of the liquid outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model after the cap is removed;

[0023] Figure 3 It is a structural schematic diagram of the cap of the utility model;

[0024] Figure 4 It is a schematic cross-sectional view of the button of the utility model in a non-pressed state;

[0025] Figure 5 It is a schematic diagram of the structure of the cooperation between the sliding block and the liquid outlet member after the button of the utility model is pressed;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the button of the utility model after being pressed;

[0027] Figure 7 It is a structural schematic diagram of the roller of the utility model;

[0028] Figure 8 It is a structural schematic diagram of the check valve of the utility model;

[0029] Fig. 9 It is a structural schematic diagram of the sliding block of the utility model;

[0030] Fig.10 It is a structural schematic diagram of the sliding block of the utility model from another angle;

[0031] Fig.11 It is a structural schematic diagram of a button of the utility model;

[0032] Fig.12 It is a schematic diagram of the structure of the liquid outlet part and the large circle of the utility model;

[0033] Fig.13 It is a structural schematic diagram of the liquid outlet part of the utility model;

[0034] Fig.14 It is a schematic diagram of the structure of the circle of the utility model;

[0035] Fig.15 It is a schematic diagram of the structure of the housing of the utility model;

[0036] Fig.16 It is a schematic structural diagram of the housing of the utility model from another angle;

[0037] Fig.17 It is a structural schematic diagram of the sealing ring of the utility model.

[0038] In the figure: 1, cap; 1.1, connecting groove; 2, bottle body; 3, pump body; 3.1, piston rod; 3.2, large circle; 3.3, ear plate; 3.4, guide block; 3.4.1, positioning groove; 4, shell; 4.1, liquid outlet groove; 4.2, liquid outlet; 4.3, pin hole; 4.4, limit tooth; 4.5, reinforcement strip; 4.6, connecting hole; 4.6.1, connecting ring; 4.7, connecting protrusion; 4.8, opening; 5, liquid outlet channel; 6. Check valve; 6.1. Cone portion; 6.2. Cylindrical portion; 6.3. Limit ring; 7. Roller; 7.1. Pin; 8. Liquid outlet; 8.1. Limit column; 8.2. Guide groove; 8.3. Liquid outlet rod; 9. Sliding block; 9.1. Limit groove; 9.2. Mounting hole; 9.3. Mounting groove; 10. Button; 10.1. Mounting column; 10.2. Mounting ring; 11. Sealing ring; 11.1. Sealing chamber; 11.2. Sealing groove. DETAILED DESCRIPTION

[0039] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0041] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0042] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0043] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0044] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0045] See also Figure 1-8In the present embodiment, a cosmetic pump head with a check valve comprises a main body, the main body comprises a bottle body 2, a pump body 3 arranged in the bottle body 2, the pump body 3 comprises a piston rod 3.1 which moves up and down to discharge liquid, the main body comprises a shell 4 mounted on the bottle body 2, a liquid outlet channel 5 connected to the inner cavity of the bottle body 2, a liquid outlet groove 4.1 is concavely arranged on the upper end surface of the shell 4, a liquid outlet port 4.2 connected to the liquid outlet channel 5 is arranged at the bottom of the liquid outlet groove 4.1, a check valve 6 is installed on the liquid outlet port 4.2, when the piston rod 3.1 is pressed, the piston rod 3.1 moves downward, and the liquid in the bottle body 2 flows from the liquid outlet channel 5 and the liquid outlet port 4.2 into the liquid outlet groove 4.1; when the piston rod 3.1 is released, the check valve 6 closes the liquid outlet port 4.2.

[0046] The liquid outlet 4.2 at the bottom of the liquid outlet groove 4.1 is connected with the liquid outlet channel 5, and a check valve 6 is installed on the liquid outlet 4.2. When the piston rod 3.1 is pressed, the piston rod 3.1 moves downward, and the liquid in the bottle body 2 flows into the liquid outlet groove 4.1 from the liquid outlet channel 5 through the liquid outlet 4.2; when the piston rod 3.1 is released, the check valve 6 closes the liquid outlet 4.2, which can effectively prevent the backflow of the foundation liquid. When the user releases the pressure, the check valve 6 will close to prevent the foundation liquid from flowing back and close the liquid outlet 4.2 to avoid contamination, drying and agglomeration of the liquid outlet 4.2.

[0047] In some embodiments, Figure 8-Figure 16 As shown, the inner wall of the liquid outlet 4.2 is provided with a limit tooth 4.4 protruding in the direction of its central axis, the check valve 6 comprises a truncated cone portion 6.1, a cylindrical portion 6.2 arranged on the lower end surface of the truncated cone portion 6.1, and a limit ring 6.3 protruding outward from the wall surface of the cylindrical portion 6.2 and arranged circumferentially. When the check valve 6 is installed in the liquid outlet 4.2, the upper end surface of the truncated cone portion 6.1 abuts against the outer wall surface of the shell 4, the cylindrical portion 6.2 is inserted into the liquid outlet 4.2, and the limit portion is located below the limit tooth 4.4. It should be noted that when the check valve 6 is upward relative to the liquid outlet, the limit portion of the check valve 6 moves to the limit tooth 4.4, and the lower wall surface of the limit tooth 4.4 abuts against the limit portion, thereby preventing the check valve 6 from loosening when the liquid is sprayed out, and the check valve 6 is separated from the liquid outlet 4.2, making the device more stable when used.

[0048] In some embodiments, Figure 7-Figure 15 As shown, a rotatable roller 7 is provided on the liquid outlet groove 4.1, and pin shafts 7.1 are provided at both left and right ends of the roller 7. The left and right side walls of the liquid outlet groove 4.1 are provided with pin holes 4.3 that cooperate with the pin shafts 7.1, and the pin shafts 7.1 are accommodated in the pin holes 4.3. It should be noted that the liquid in the cosmetics can pass through the liquid outlet 4.2 to the liquid outlet groove 4.1, and the outer side of the roller 7 is stained with the liquid in the liquid outlet groove 4.1. The user can directly apply the cosmetic liquid on the facial skin through the roller 7. The design of the roller 7 makes the application more uniform, avoids the appearance of patches or lines, and provides a more natural makeup effect.

[0049] In some embodiments, Figure 15-16 As shown, the bottom wall of the liquid outlet groove 4.1 is arranged in an inwardly concave arc shape. It should be noted that the inwardly concave arc shape of the liquid outlet groove 4.1 allows the cosmetic liquid to gather at the bottom of the liquid outlet groove 4.1, preventing the cosmetic liquid from escaping when flowing out of the liquid outlet 4.2, and also makes it more convenient and uniform for the roller 7 to be stained with the cosmetic liquid in the liquid outlet groove 4.1.

[0050] In some embodiments, Figure 2-Figure 3 As shown, the main body includes a cap 1 installed on the bottle body 2, and the outer shell 4 is arranged inside the cap 1. The lower end surface of the side wall of the outer shell 4 has connecting protrusions 4.7 protruding outward on both sides. The outer wall of the cap 1 is provided with a connecting groove 1.1 that cooperates with the connecting protrusion 4.7. When the cap 1 is installed on the bottle body 2, the connecting protrusion 4.7 is arranged in the connecting groove 1.1. It should be noted that, by setting the connecting protrusion 4.7 in the connecting groove 1.1, the cap 1 is easy to install or disassemble, and can effectively protect the roller 7 from being polluted by the external environment.

[0051] In some embodiments, Figure 9-13 As shown, a liquid outlet part 8 is installed at the upper end of the piston rod 3.1, and a sliding block 9 that can slide back and forth left and right is provided inside the shell 4. Limiting columns 8.1 protrude outward from the front and rear side walls of the liquid outlet part 8. The sliding block 9 is provided with an inclined limiting groove 9.1 that cooperates with the limiting column 8.1, and the limiting column 8.1 is arranged in the limiting groove 9.1. It should be noted that when the sliding block 9 moves toward the inside of the shell 4, the wall surface of the limiting groove 9.1 abuts against the wall surface of the limiting column 8.1. Since the limiting groove 9.1 is inclined, the vertical up and down reciprocating movement of the liquid outlet part 8 is realized, thereby realizing the up and down pressing of the piston rod 3.1 to discharge liquid, which is more convenient and quick, and can accurately control the flow rate of the liquid to avoid excessive use.

[0052] In some embodiments, Figure 12-14 As shown, the pump body 3 includes a large circle 3.2, and the sliding block 9 is installed on the upper end surface of the large circle 3.2. The upper end surface of the large circle 3.2 is provided with two oppositely arranged ear plates 3.3, and the sliding block 9 is arranged between the two ear plates 3.3. The ear plates 3.3 limit the movement direction of the sliding block 9. It should be noted that the sliding block 9 is arranged between the two ear plates 3.3. When the sliding block 9 has a tendency to move forward or backward, the inner wall surface of the ear plate 3.3 is against the front and rear side walls of the sliding block 9, limiting the movement direction of the sliding block 9, so that the sliding block 9 can only move in a straight line to the left and right, making the device more stable during operation.

[0053] In some embodiments, Figure 10-11As shown, the left end face of the sliding block 9 is provided with a mounting hole 9.2, the side wall surface of the housing 4 is provided with an opening 4.8, a button 10 is installed at the opening 4.8, the inner end face of the button 10 is provided with a mounting column 10.1 that matches the mounting hole 9.2, the mounting column 10.1 is inserted into the mounting hole 9.2, the outer wall surface of the mounting column 10.1 is circumferentially provided with a mounting ring 10.2, and the wall surface of the mounting hole 9.2 is provided with a mounting groove 9.3 that matches the mounting ring 10.2. When the button 10 is installed on the sliding block 9, the mounting ring 10.2 is accommodated in the mounting groove 9.3. It should be noted that, through the setting of the button 10, the button 10 is fixedly connected to the sliding block 9. Pressing the button 10 can realize the sliding of the sliding block 9, which is more convenient and quick. At the same time, the mounting ring 10.2 is accommodated in the mounting groove 9.3. When the button 10 is equivalent to the sliding block 9 and has a movement tendency, the wall surface of the mounting ring 10.2 is against the wall surface of the mounting groove 9.3, thereby limiting the movement of the button 10 relative to the sliding block 9, making the button 10 and the sliding block 9 more tightly connected.

[0054] In some embodiments, Figure 12-14 As shown, a guide groove 8.2 is provided on the right end face of the liquid outlet member 8, and a guide block 3.4 that cooperates with the guide groove 8.2 is protruded upwardly by the large circle 3.2, and the guide groove 8.2 is engaged with the guide block 3.4. It should be noted that, by engaging the guide groove 8.2 with the guide block 3.4, when the liquid outlet member 8 moves upward or downward, the wall surface of the guide block 3.4 abuts against the wall surface of the guide groove 8.2, limiting the horizontal movement of the liquid outlet member 8, thereby playing a vertical and downward guiding role for the liquid outlet member 8.

[0055] In some embodiments, Figure 14-16 As shown, the guide block 3.4 includes a concave positioning groove 3.4.1, and the inner side wall of the shell 4 extends inwardly with two reinforcing strips 4.5, the two reinforcing strips 4.5 are accommodated in the positioning groove 3.4.1, and the outer side wall surfaces of the two reinforcing strips 4.5 are respectively against the two opposite inner side wall surfaces of the positioning groove 3.4.1. It should be noted that the two reinforcing strips 4.5 are accommodated in the positioning groove 3.4.1, and the outer side wall surfaces of the two reinforcing strips 4.5 are respectively against the two opposite inner side wall surfaces of the positioning groove 3.4.1, so that the installation position of the shell 4 can be accurately determined, and the setting of the reinforcing strips 4.5 can increase the rigidity of the shell 4.

[0056] In some embodiments, Figure 16-17As shown, a sealing ring 11 is sleeved on the piston rod 3.1, and the sealing ring 11 is installed above the liquid outlet part 8. The inner end surface of the shell 4 protrudes downward to have a connecting hole 4.6 that cooperates with the sealing ring 11. The connecting hole 4.6 is inserted into the sealing ring 11 to form a sealed cavity 11.1. The lower end of the sealed cavity 11.1 is connected to the liquid outlet channel 5, and the upper end of the sealed cavity 11.1 is connected to the liquid outlet port 4.2. It should be noted that the sealing cavity 11.1 is formed by the cooperation of the sealing ring 11 and the connecting hole 4.6, so that the liquid discharge effect of the device is better and the sealing performance is stronger.

[0057] It should be noted that the upper end surface of the liquid outlet member 8 is provided with a liquid outlet rod 8.3, the lower end of the liquid outlet rod 8.3 is connected to the liquid outlet channel 5, the liquid outlet rod 8.3 is inserted into the lower end surface of the sealing ring 11, and the liquid outlet rod 8.3 and the sealing ring 11 are interference sealed.

[0058] It should be noted that a connecting ring 4.6.1 is circumferentially arranged on the outer wall of the connecting hole 4.6, and a sealing groove 11.2 matching with the connecting ring 4.6.1 is arranged on the inner wall of the sealing ring 11, and the connecting ring 4.6.1 is installed in the sealing groove 11.2 and is tightly fitted with an interference seal.

[0059] Working principle: Press the button 10, the sliding block 9 moves along the inner wall of the ear plate 3.3. When the sliding block 9 moves toward the inside of the housing 4, the upper end surface of the large circle 3.2 is provided with two ear plates 3.3 arranged opposite to each other, and the sliding block 9 is arranged between the two ear plates 3.3, thereby limiting the movement direction of the sliding block 9, so that the sliding block 9 can only move in a straight line to the left and right. The wall surface of the limit groove 9.1 is against the wall surface of the limit column 8.1. Since the limit groove 9.1 is arranged to be inclined upward from the outside to the inside, the liquid outlet 8 can be moved vertically downward. The piston rod 3.1 is moved up and down to press the piston rod 3.1 to discharge the liquid. The guide groove 8.2 is engaged with the guide block 3.4. The liquid discharge member 8 moves downward along the wall of the guide groove 8.2. The liquid outlet 4.2 at the bottom of the liquid outlet groove 4.1 is connected with the liquid outlet channel 5. The liquid in the bottle body 2 flows into the liquid outlet groove 4.1 from the liquid outlet channel 5 through the liquid outlet 4.2. The piston rod 3.1 is released, and the check valve 6 closes the liquid outlet 4.2 to prevent the foundation liquid from flowing back and closes the liquid outlet 4.2 to avoid contamination, drying and agglomeration of the liquid outlet 4.2.

[0060] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0061] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A cosmetic pump head with a check valve, comprising a body, the body comprising a bottle body (2), and a pump body (3) disposed in the bottle body (2), characterized in that: The pump body (3) comprises a piston rod (3.1) that moves up and down to discharge liquid. The main body comprises a shell (4) mounted on the bottle body (2) and a liquid outlet channel (5) connected to the inner cavity of the bottle body (2). The upper end surface of the shell (4) is provided with a liquid outlet groove (4.1) inwardly. The bottom of the liquid outlet groove (4.1) is provided with a liquid outlet (4.2) connected to the liquid outlet channel (5). A check valve (6) is installed on the liquid outlet (4.2). When the piston rod (3.1) is pressed, the piston rod (3.1) moves downward, and the liquid in the bottle body (2) flows from the liquid outlet channel (5) and the liquid outlet (4.2) into the liquid outlet groove (4.1); when the piston rod (3.1) is released, the check valve (6) closes the liquid outlet (4.2).

2. A cosmetic pump head with a check valve according to claim 1, characterized in that: The inner wall of the liquid outlet (4.2) is provided with a limit tooth (4.4) protruding in the direction of the central axis thereof; the check valve (6) comprises a truncated cone portion (6.1), a cylindrical portion (6.2) arranged on the lower end surface of the truncated cone portion (6.1), and a limit ring (6.3) protruding outwardly from the wall surface of the cylindrical portion (6.2) and arranged in a circumferential direction; when the check valve (6) is installed in the liquid outlet (4.2), the upper end surface of the truncated cone portion (6.1) abuts against the outer wall surface of the housing (4), the cylindrical portion (6.2) is inserted into the liquid outlet (4.2), and a limit portion is provided below the limit tooth (4.4).

3. A cosmetic pump head with a check valve according to claim 1, characterized in that: The liquid outlet groove (4.1) is provided with a rotatable roller (7), and both left and right ends of the roller (7) are provided with pin shafts (7.1). The left and right side walls of the liquid outlet groove (4.1) are provided with pin holes (4.3) that match the pin shafts (7.1), and the pin shafts (7.1) are accommodated in the pin holes (4.3).

4. A cosmetic pump head with a check valve according to claim 3, characterized in that: The bottom wall surface of the liquid outlet groove (4.1) is arranged in a concave arc shape.

5. A cosmetic pump head with a check valve according to claim 1, characterized in that: A liquid outlet part (8) is installed at the upper end of the piston rod (3.1), a sliding block (9) capable of reciprocating left and right is provided inside the housing (4), and limiting columns (8.1) protrude outwardly from the front and rear side walls of the liquid outlet part (8), and a limiting groove (9.1) arranged obliquely and cooperating with the limiting column (8.1) is provided on the sliding block (9), and the limiting column (8.1) is arranged in the limiting groove (9.1).

6. A cosmetic pump head with a check valve according to claim 5, characterized in that: The pump body (3) comprises a large circle (3.2), the sliding block (9) is mounted on the upper end surface of the large circle (3.2), the upper end surface of the large circle (3.2) is provided with two oppositely arranged ear plates (3.3), the sliding block (9) is arranged between the two ear plates (3.3), and the ear plates (3.3) limit the movement direction of the sliding block (9).

7. A cosmetic pump head with a check valve according to claim 5, characterized in that: The left end surface of the sliding block (9) is provided with a mounting hole (9.2), the side wall surface of the housing (4) is provided with an opening (4.8), a button (10) is installed at the opening (4.8), the inner end surface of the button (10) is provided with a mounting column (10.1) matched with the mounting hole (9.2), the mounting column (10.1) is inserted into the mounting hole (9.2), the outer wall surface of the mounting column (10.1) is circumferentially provided with a mounting ring (10.2), the wall surface of the mounting hole (9.2) is provided with a mounting groove (9.3) matched with the mounting ring (10.2), when the button (10) is installed on the sliding block (9), the mounting ring (10.2) is accommodated in the mounting groove (9.3).

8. A cosmetic pump head with a check valve according to claim 6, characterized in that: The right end face of the liquid outlet member (8) is provided with a guide groove (8.2), the large circle (3.2) protrudes upward and has a guide block (3.4) that cooperates with the guide groove (8.2), and the guide groove (8.2) is engaged with the guide block (3.4).

9. A cosmetic pump head with a check valve according to claim 8, characterized in that: The guide block (3.4) comprises a concave positioning groove (3.4.1), and the inner side wall of the outer shell (4) has two reinforcing strips (4.5) extending inwardly, the two reinforcing strips (4.5) are accommodated in the positioning groove (3.4.1), and the outer side wall surfaces of the two reinforcing strips (4.5) respectively abut against the two opposite inner side wall surfaces of the positioning groove (3.4.1).

10. A cosmetic pump head with a check valve according to claim 5, characterized in that: A sealing ring (11) is sleeved on the piston rod (3.1), and the sealing ring (11) is installed above the liquid outlet member (8). The inner end surface of the housing (4) protrudes downward to provide a connecting hole (4.6) that cooperates with the sealing ring (11). The connecting hole (4.6) is inserted into the sealing ring (11) to form a sealing cavity (11.1). The lower end of the sealing cavity (11.1) is connected to the liquid outlet channel (5), and the upper end of the sealing cavity (11.1) is connected to the liquid outlet port (4.2).

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