Pump head and cosmetic bottle

Abstract

The utility model relates to the technical field of cosmetic bottle containers, in particular to a pump head and a cosmetic bottle. The pump head comprises a pressing cap, a limiting stopper and a connecting valve located in the pressing cap. The pressing cap is provided with a first nozzle, a second nozzle and a limiting hole; the connecting valve comprises a connecting valve cavity, a connecting valve feeding port, a connecting valve front channel communicated with the second nozzle and a connecting valve upper channel communicated with the first nozzle. The limiter comprises a limiting rod, a position control knob, a first sealing ring and a second sealing ring, wherein the limiting rod is sleeved with the first sealing ring and the second sealing ring, and a connecting valve cavity between the first sealing ring and the second sealing ring is a first cavity communicated with a channel on the connecting valve. A connecting valve cavity on one side, far away from the second sealing ring, of the first sealing ring is a second cavity communicated with the connecting valve front channel; and the position control knob is connected with the limiting rod and drives the limiting rod to do reciprocating rectilinear motion, so that the connecting valve feeding port is communicated with the first cavity or the second cavity. The pump head is simple in opening and closing structure for switching different channels, convenient to machine and easier to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetic bottle containers, in particular to a pump head and a cosmetic bottle. Background Art

[0002] The material categories in the cosmetics field are mostly water-based, essences, and lotions. Among them, cosmetics with water-based and low-viscosity essences usually need to be taken with a spray pump or lotion pump. The spray pump makes the water-based content produce an atomization effect, which can quickly and evenly cover the affected skin area, but the single pumping volume is relatively small; the lotion pump can cover the affected skin area in large quantities and in a targeted manner, but it cannot produce an atomization effect.

[0003] Currently, there are only separate spray pump heads and lotion heads on the market. In order to achieve both lotion and spray effects, some products need to switch between the two pump heads, which makes use inconvenient and increases costs.

[0004] In order to solve the above problems, the prior art, such as Chinese patent CN220045158U, discloses a multifunctional pump head and a multifunctional cosmetic bottle. The pump head includes a push cap, a link valve, a conversion member, a piston rod, a accommodating cover and a drive cylinder. The push cap is provided with a first nozzle, and the two ends of the link valve are respectively connected to the push cap and the piston rod. The link valve is provided with a connecting channel and a through channel that are mutually connected. The conversion member includes a conversion rod and a second nozzle. The conversion rod is rotatably arranged in the through channel and the conversion rod is provided with a first channel that is not mutually conductive and a second channel for communicating with the second nozzle. The piston rod is provided with a diversion channel, and the rotation of the conversion rod is used to control the conduction of the first nozzle and the second nozzle. The accommodating cover has a through cavity and a receiving channel, the drive cylinder is arranged in the through cavity and connected to the accommodating cover, the piston rod is movably matched with the drive cylinder, and the drive cylinder transports the liquid to the diversion channel in a unidirectional manner. The multifunctional pump head and the multifunctional cosmetic bottle realize the opening and closing of different passages through the rotational cooperation of the link valve and the conversion member, and realize the effect of switching the material liquid discharge.

[0005] However, the above technical solution still has the following disadvantages: since the conversion rod is rotatably arranged in the through channel of the connecting valve, the contact parts between the conversion rod and the through channel need to be sealed, otherwise the connectivity of the connecting channel is affected. Due to the large range of the contact parts, the processing difficulty is increased; at the same time, the opening and closing of the connecting channel need to be operated by rotating the conversion rod, which makes the operation more difficult. Summary of the invention

[0006] The purpose of the utility model is to overcome the technical problems in the prior art that the multifunctional pump head is difficult to process and operate, and to provide a pump head and a cosmetic bottle. The opening and closing structure of the pump head for switching different passages is simple and easy to process. When switching different passages, the limit rod does not need to be rotated, but only needs to be moved back and forth, which is easier to operate.

[0007] In order to achieve the above-mentioned objectives, the utility model provides a pump head in a first aspect, comprising: a push cap, a connecting valve and a limiter; the push cap is provided with a first nozzle, a second nozzle and a limit hole; the connecting valve is arranged in the inner cavity of the push cap, the connecting valve comprises a connecting valve cavity and a connecting valve inlet, a connecting valve front channel and a connecting valve upper channel respectively connected with the connecting valve cavity, the connecting valve front channel is connected with the second nozzle, the connecting valve upper channel is connected with the first nozzle, and the channel inlet of the connecting valve upper channel is located on the side of the connecting valve inlet away from the second nozzle; the limiter extends through the limit hole into the connecting valve cavity, and the limiter comprises a limit rod, a control knob, a first sealing A sealing ring and a second sealing ring, the first sealing ring and the second sealing ring are spaced apart and sleeved on the limit rod, the first sealing ring and the second sealing ring are respectively abutted against the inner cavity wall of the connecting valve cavity, the connecting valve cavity portion between the first sealing ring and the second sealing ring is a first chamber, and the first chamber is connected to the upper channel of the connecting valve; the connecting valve cavity portion of the first sealing ring away from the second sealing ring side is a second chamber, and the second chamber is connected to the front channel of the connecting valve; the control knob is connected to the limit rod and is used to drive the limit rod to make reciprocating linear motion along the axial direction, so as to realize the switching of the connecting valve inlet between being connected to the first chamber or being connected to the second chamber.

[0008] Optionally, the length of the limit rod is suitable for ensuring that when the limit rod moves to one end of the connecting valve cavity close to the second nozzle, the first chamber is connected to the connecting valve inlet, and when the limit rod moves to one end of the connecting valve cavity away from the second nozzle, the second chamber is connected to the connecting valve inlet.

[0009] Optionally, a limit rod thread is provided at one end of the limit rod close to the control knob, and a control knob thread adapted to the limit rod thread is provided at one end of the control knob close to the limit rod, and the control knob drives the limit rod to perform reciprocating linear motion through the cooperation of the control knob thread and the limit rod thread.

[0010] Optionally, it further comprises a first limit member for limiting the rotation of the limit rod and a second limit member for limiting the axial movement of the control knob along the limit rod.

[0011] Optionally, the first limiting member includes a limiting slide groove and a limiting sliding block slidably arranged in the limiting slide groove, the limiting sliding block extends from the cavity wall on the side of the first chamber close to the second nozzle toward the direction of the limiting rod, and the limiting slide groove is formed on the cavity wall of the internal cavity on the side of the limiting rod close to the second nozzle.

[0012] Optionally, the positioning knob includes a knob head located outside the push cap and a knob rod connected to the knob head and extending into the cavity of the connecting valve, and the second limiting member is a plurality of latching positions protruding from the knob rod and circumferentially spaced along the knob rod, and a side of the latching position facing the push cap and a side of the knob head facing the push cap are respectively arranged to fit the inner and outer sides of the push cap to limit the axial movement of the positioning knob.

[0013] Optionally, the limiting rod includes a pair of first annular members in which the first sealing ring is clamped, and a pair of second annular members in which the second sealing ring is clamped.

[0014] Optionally, a pair of the first annular members are each formed by two semi-annular members arranged at an interval, and the second annular member close to one side of the first annular member is formed by two semi-annular members arranged at an interval.

[0015] Optionally, the channel inlet of the connecting valve front channel is arranged corresponding to the top of the second chamber.

[0016] A second aspect of the utility model provides a cosmetic bottle, comprising a bottle body and the pump head as described above, wherein the pump head is detachably connected to the neck of the bottle body.

[0017] Through the above technical scheme, during processing, it is only necessary to consider the sealing between the first sealing ring and the second sealing ring and the limit rod and the cavity wall connecting the valve cavity. The range that needs to be sealed is greatly reduced, and the structure is simple, which makes the processing more convenient. In addition, since the sealing accuracy of the two sealing rings is easier to ensure, it is not easy to have a problem with the seal in a certain place, resulting in discontinuity in the sealing of the entire passage. At the same time, when different passages need to be switched, it is only necessary to move the limit rod forward or backward to switch, and there is no need to switch different passages by rotating the limit rod, which is easier to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a pump head of an optional embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the partial structure of the pump head of an optional embodiment of the utility model when the limit rod moves to the left end;

[0021] Figure 3 It is a first angle sectional stereoscopic view of the pump head of an optional embodiment of the utility model when the limit rod moves to the right end;

[0022] Figure 4 It is a second angle sectional stereoscopic view of the pump head of an optional embodiment of the utility model when the limit rod moves to the right end;

[0023] Figure 5 It is a sectional stereoscopic view of the pump head of an optional embodiment of the utility model when the limit rod moves to the right end at a third angle;

[0024] Figure 6 It is a schematic structural diagram of a limit rod of a pump head of an optional embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the limit rod of the pump head of an optional embodiment of the utility model from another angle;

[0026] Figure 8 It is a structural schematic diagram of a position control knob of a pump head of an optional embodiment of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of a push cap of a pump head of an optional embodiment of the utility model;

[0028] Fig.10 It is a structural schematic diagram of a cosmetic bottle of an optional embodiment of the utility model.

[0029] Description of Reference Numerals

[0030] 1. Outer cover; 2. Press cap; 3. Cover body; 4. Bottle body; 5. Position control knob; 6. Limit rod; 7. Second nozzle; 8. Limit slider; 9. Connecting valve; 10. Piston rod; 11. Connecting valve upper channel; 12. Connecting valve front channel; 13. First nozzle; 14. Limit rod thread; 15. Position control knob thread; 16. Positioning; 17. Limit hole; 18. First sealing ring; 19. Second sealing ring; 20. First annular member; 21. Second annular member; 22. Connecting valve inlet; 23. Limit slide groove. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0032] In the present invention, unless otherwise stated, the directional words "front and back" used are usually based on the position of the limit rod 6 relative to the control knob 5; the directional words "up, down, left, right" etc. used are usually based on the positions shown in the corresponding drawings.

[0033] The first aspect of the utility model provides a pump head, such as Figure 1-8As shown, the pump head includes: a push cap 2, a connecting valve 9 and a limiter; the push cap 2 is provided with a first nozzle 13, a second nozzle 7 and a limit hole 17; the connecting valve 9 is arranged in the inner cavity of the push cap 2, the connecting valve 9 includes a connecting valve cavity and a connecting valve inlet 22, a connecting valve front channel 12 and a connecting valve upper channel 11 which are respectively connected to the connecting valve cavity, the connecting valve front channel 12 is connected to the second nozzle 7, the connecting valve upper channel 11 is connected to the first nozzle 13, and the channel inlet of the connecting valve upper channel 11 is located on the side of the connecting valve inlet 22 away from the second nozzle 7; the limiter extends into the connecting valve cavity through the limit hole 17, and the limiter includes a limit rod 6, a control knob 5, a first sealing ring 18 and a second The sealing ring 19, the first sealing ring 18 and the second sealing ring 19 are sleeved on the limiting rod 6 at intervals, the first sealing ring 18 and the second sealing ring 19 are respectively in contact with the inner cavity wall of the connecting valve cavity, the connecting valve cavity portion between the first sealing ring 18 and the second sealing ring 19 is the first chamber, and the first chamber is connected to the connecting valve upper channel 11; the connecting valve cavity portion of the first sealing ring 18 away from the second sealing ring 19 is the second chamber, and the second chamber is connected to the connecting valve front channel 12; the control knob 5 is connected to the limiting rod 6 and is used to drive the limiting rod 6 to make reciprocating linear motion along the axial direction, so as to realize the switching of the connecting valve inlet 22 between being connected to the first chamber or being connected to the second chamber. Since the first chamber is limited by the first sealing ring 18 and the second sealing ring 19, and the first sealing ring 18 and the second sealing ring 19 move with the forward and backward movement of the limiting rod 6, the first chamber also moves forward and backward accordingly, and the size of the first chamber is constant. Since the second chamber is defined by the first sealing ring 18 and the cavity wall at one end of the connecting valve cavity, the size of the second chamber also changes when only the first sealing ring 18 moves forward and backward with the limiting rod 6. That is, when the second chamber is connected to the connecting valve inlet 22, the range of the second chamber becomes relatively larger, and when the second chamber is not connected to the connecting valve inlet 22, the range of the second chamber becomes relatively smaller.

[0034] Through the above technical solution, the position control knob 5 drives the limit rod 6 to move forward and backward, and then drives the first sealing ring 18 and the second sealing ring 19 to move forward and backward, that is, the first chamber moves forward and backward accordingly, and the second chamber changes size accordingly. Then, the opening and closing of the connecting passage connecting the valve inlet 22, the first chamber, the connecting valve upper channel 11 and the first nozzle 13 are controlled, and the opening and closing of the connecting passage connecting the valve inlet 22, the second chamber, the connecting valve front channel 12 and the second nozzle 7 are controlled. That is, by controlling the movement of the limit rod 6 to switch the connecting passage, the switching of the first nozzle 13 or the second nozzle 7 can be completed. The use logic of the liquid discharge control method of this design is simple, easy to understand and easy to operate, and the structure of this design is simple, with high economy, and different liquid discharge volumes can be achieved with different pump cores, and it has strong versatility. During processing, it is only necessary to consider the sealing between the first sealing ring 18 and the second sealing ring 19 and the limit rod 6 and the cavity wall of the connecting valve cavity. The range that needs to be sealed is greatly reduced, and the structure is simple, which makes the processing more convenient. In addition, since the sealing accuracy of the two sealing rings is easier to ensure, it is not easy to have a problem with the sealing in a certain place, resulting in discontinuity in the sealing of the entire passage. At the same time, when different passages need to be switched, it is only necessary to move the limit rod 6 forward or backward to switch, and there is no need to switch different passages by rotating the limit rod 6, which is easier to operate.

[0035] Optionally, the first nozzle 13 is a lotion pump nozzle, the press cap 2 is provided with a spray sheet, and the second nozzle 7 is a spray nozzle, that is, the pump head is a multifunctional pump head, which can spray liquid or lotion liquid for aqueous solution or low-viscosity essence content, achieving two usage effects.

[0036] As an implementation method, Figure 2-5 As shown, the length of the limiting rod 6 is suitable for enabling the first chamber to communicate with the connecting valve inlet 22 when the limiting rod 6 moves to the end of the connecting valve cavity close to the second nozzle 7, and the second chamber to communicate with the connecting valve inlet 22 when the limiting rod 6 moves to the end of the connecting valve cavity away from the second nozzle 7. Such a design can make the limiting rod 6 more convenient and reliable when switching different passages, and the use logic is simpler, which can further ensure the reliability of the operation results.

[0037] As an implementation method, Figure 6 and Figure 7 As shown, the end of the limit rod 6 close to the position control knob 5 is provided with a limit rod thread 14, and the end of the position control knob 5 close to the limit rod 6 is provided with a position control knob thread 15 adapted to the limit rod thread 14. The position control knob 5 drives the limit rod 6 to perform reciprocating linear motion through the cooperation of the position control knob thread 15 and the limit rod thread 14. Optionally, the limit rod thread 14 is an external thread, and the position control knob thread 15 is an internal thread. Figure 6 As shown, the limiting rod 6 includes a limiting portion where a first sealing ring 18 and a second sealing ring 19 are installed and a connecting portion where a limiting rod thread 14 is provided.

[0038] As an implementation manner, it further includes a first limiting member for limiting the rotation of the limiting rod 6 and a second limiting member for limiting the axial movement of the control knob 5 along the limiting rod 6 .

[0039] As an implementation method, Figure 4 As shown, the first limiting member includes a limiting slide groove 23 and a limiting slider 8 slidably arranged in the limiting slide groove 23, the limiting slider 8 is extended from the cavity wall of the first chamber on the side close to the second nozzle 7 to the direction of the limiting rod 6, and the limiting slide groove 23 is formed on the cavity wall of the inner cavity of the limiting rod 6 on the side close to the second nozzle 7. Specifically, a pair of relatively arranged limiting slide grooves 23 are recessed on the cavity wall of the inner cavity of the limiting rod 6. The limiting slider 8 is a strip-shaped structure, and accordingly, a pair of limiting slide grooves 23 are strip-shaped slide grooves adapted thereto, and the two sides of the strip-shaped limiting slider 8 are slidably arranged in the pair of limiting slide grooves 23 respectively. Such a design can ensure that the limiting slider 8 is always located in the limiting slide groove 23 during the sliding process, and the limiting rod 6 can be restricted no matter where the limiting rod 6 is, so as to prevent the rotation of the limiting rod 6.

[0040] As an implementation method, Figure 7 As shown, the control knob 5 includes a knob head located outside the push cap 2 and a knob rod connected to the knob head and extending into the cavity of the connecting valve, and the second limiting member is a plurality of stoppers 16 convexly arranged on the knob rod and distributed along the circumference of the knob rod, and the stoppers 16 facing the push cap 2 and the knob head facing the push cap 2 are respectively arranged to fit the inner and outer sides of the push cap 2 to limit the axial movement of the control knob 5. That is, the outer side of the stopper 16 is arranged to fit the inner side of the push cap 2, and the inner side of the knob head is arranged to fit the outer side of the push cap 2. When the control knob 5 moves toward the inside of the push cap 2, the knob head will be blocked by the push cap 2, and when the control knob 5 moves toward the outside of the push cap 2, the stopper 16 will be blocked by the push cap 2, thereby achieving the limitation of the two movement directions. The control knob 5 is limited on the push cap 2 through the limiting hole 17. At the same time, the control knob 5 is restricted by the clamping of the knob head and multiple clamping positions 16 so that it cannot move forward or backward and can only rotate. Then, the forward and backward movement of the limit rod 6 is controlled by the thread cooperation between the control knob thread 15 and the limit rod thread 14.

[0041] As an implementation method, Figure 2-6As shown, the limiting rod 6 includes a pair of first annular members 20 in which the first sealing ring 18 is sandwiched, and a pair of second annular members 21 in which the second sealing ring 19 is sandwiched. The first annular member 20 and the second annular member 21 are designed to limit the positions of the first sealing ring 18 and the second sealing ring 19, respectively, to ensure the stability of the first sealing ring 18 and the second sealing ring 19 during the movement of the limiting rod 6.

[0042] As an implementation method, Figure 5 and Figure 6 As shown, the first ring member 20 is formed by two semi-ring members arranged at intervals, and the second ring member 21 close to the first ring member 20 is formed by two semi-ring members arranged at intervals. Such a design is more convenient for installing the first sealing ring 18 and the second sealing ring 19. Optionally, as Figure 6 As shown, the second ring member 21 on the side away from the first ring member 20 is located at the end of the limiting portion of the limiting rod 6 and is of an integrated design.

[0043] As an implementation method, Figure 2 and Figure 3 As shown, the channel inlet of the connecting valve front channel 12 is arranged corresponding to the top of the second chamber. Such a design makes the channel connected to the second nozzle 7 have a better discharge effect.

[0044] As a specific implementation method, Figure 1 and Fig. 9 As shown, the pump head also includes a piston rod 10, a driving lever, a cover body 3 and a straw. The piston rod 10 is connected to the connecting valve 9, and the connecting valve feed port 22 is correspondingly arranged with the guide channel of the piston rod 10, so that the liquid passes through the guide channel of the piston rod 10, the connecting valve feed port 22, the first chamber, the connecting valve upper channel 11 and the first nozzle 13 in sequence, or passes through the guide channel of the piston rod 10, the connecting valve feed port 22, the second chamber, the connecting valve front channel 12 and the second nozzle 7 in sequence. The cover body 3 is provided with a cover body cavity and a receiving channel for pressing the cap 2 downward. The driving cylinder is arranged in the cover body cavity and connected to the cover body 3. The piston rod 10 and the driving cylinder are movably matched. The driving cylinder is used to connect the liquid externally and provide the power to transport the liquid to the guide channel of the piston rod 10 in one direction. The straw is arranged at the liquid inlet of the cylinder body suction end of the driving cylinder. Specifically, the suction tube is connected to the suction end of the cylinder body of the driving cylinder by interference fit, and the connecting valve 9, the push cap 2 and the piston rod 10 are all connected by interference fit.

[0045] The working principle of the pump head is as follows: by rotating the position control knob 5, the forward and backward movement of the limit rod 6 is controlled. The first sealing ring 18 and the second sealing ring 19 on the limit rod 6 can control the direction of the material body out of the connecting valve 9, thereby determining the effect of the material body injection. Specifically, Figure 3-5As shown, the position control knob 5 is not turned, the limit rod 6 is at the rear, and the channel 11 on the connecting valve is closed by the first chamber formed by the first sealing ring 18 and the second sealing ring 19, that is, the first chamber is not connected to the connecting valve inlet 22, the first sealing ring 18 is located on the right side of the connecting valve inlet 22, and the second chamber is connected to the connecting valve inlet 22. When the cap 2 is pressed downward, the material enters the connecting valve 9 through the piston rod 10, and the material can only enter the spray piece from the channel 12 in front of the connecting valve. At this time, the pressure pump is in the form of a spray pump, and the material is sprayed out in a mist. Figure 2 As shown, the position control knob 5 rotates to push the limit rod 6 forward, the connecting valve upper channel 11 is opened, and the connecting valve front channel 12 is closed by the second chamber formed between the first sealing ring 18 and the left cavity wall of the connecting valve cavity, that is, the second chamber is not connected to the connecting valve inlet 22, the first sealing ring 18 is located on the left side of the connecting valve inlet 22, and the first chamber is connected to the connecting valve inlet 22. When the cap 2 is pressed downward, the material enters the connecting valve 9 through the piston rod 10, and the material can only enter the first nozzle 13, that is, the lotion pump nozzle, from the connecting valve upper channel 11. At this time, the pressure pump is in the form of a lotion pump, and the material is sprayed out in the shape of water drops. This pump head can control different liquid outlet passages through the position control knob 5 to achieve two liquid outlet effects; the use logic of controlling the liquid outlet method is simple, and consumers can understand and operate it easily. This pump head has a simple structure and high economy. It can achieve different liquid outlets with different pump cores and has strong versatility.

[0046] The second aspect of the present invention provides a cosmetic bottle, the cosmetic bottle comprising a bottle body 4 and a pump head as described above, the pump head being detachably connected to the neck of the bottle body 4. Fig. 9 As shown, specifically, the pump head is detachably connected to the neck of the bottle body 4 through the cover body 3, which can be a threaded connection. The cosmetic bottle also includes an outer cover 1, which is used to cover the part of the pump head exposed outside the bottle body 4, that is, to cover the cap 2 and the cover body 3.

[0047] The optional implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above implementation modes. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0049] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A pump head, characterized in that: include: A push cap (2), a connecting valve (9) and a stopper; The push cap (2) is provided with a first nozzle (13), a second nozzle (7) and a limiting hole (17); The connecting valve (9) is arranged in the inner cavity of the pressing cap (2), and the connecting valve (9) comprises a connecting valve cavity and a connecting valve inlet (22), a connecting valve front channel (12) and a connecting valve upper channel (11) respectively connected to the connecting valve cavity, the connecting valve front channel (12) and the connecting valve upper channel (11) are connected, the connecting valve front channel (12) and the second nozzle (7) are connected, the connecting valve upper channel (11) and the first nozzle (13) are connected, and the channel inlet of the connecting valve upper channel (11) is located on the side of the connecting valve inlet (22) away from the second nozzle (7); The limiter extends through the limit hole (17) into the connecting valve cavity, and the limiter comprises a limit rod (6), a control knob (5), a first sealing ring (18) and a second sealing ring (19). The first sealing ring (18) and the second sealing ring (19) are sleeved on the limit rod (6) at intervals, and the first sealing ring (18) and the second sealing ring (19) are respectively in contact with the inner cavity wall of the connecting valve cavity. The connecting valve cavity between the first sealing ring (18) and the second sealing ring (19) is The cavity part is a first cavity, and the first cavity is connected to the upper channel (11) of the connecting valve; the cavity part of the connecting valve on the side of the first sealing ring (18) away from the second sealing ring (19) is a second cavity, and the second cavity is connected to the front channel (12) of the connecting valve; the control knob (5) is connected to the limit rod (6) and is used to drive the limit rod (6) to perform reciprocating linear motion along the axial direction, so as to realize the switching of the connecting valve inlet (22) between being connected to the first cavity or being connected to the second cavity.

2. The pump head according to claim 1, characterized in that: The length of the limiting rod (6) is suitable for enabling the first chamber to communicate with the connecting valve inlet (22) when the limiting rod (6) moves to the end of the connecting valve cavity close to the second nozzle (7), and for enabling the second chamber to communicate with the connecting valve inlet (22) when the limiting rod (6) moves to the end of the connecting valve cavity away from the second nozzle (7).

3. The pump head according to claim 1, characterized in that: A limit rod thread (14) is arranged at one end of the limit rod (6) close to the position control knob (5), and a control knob thread (15) matched with the limit rod thread (14) is arranged at one end of the position control knob (5) close to the limit rod (6). The position control knob (5) drives the limit rod (6) to perform reciprocating linear motion through the cooperation between the control knob thread (15) and the limit rod thread (14).

4. The pump head according to claim 3, characterized in that: It also comprises a first limiting member for limiting the rotation of the limiting rod (6) and a second limiting member for limiting the axial movement of the control knob (5) along the limiting rod (6).

5. The pump head according to claim 4, characterized in that: The first limiting member comprises a limiting slide groove (23) and a limiting slider (8) slidably arranged in the limiting slide groove (23); the limiting slider (8) is extended from a cavity wall on a side of the first chamber close to the second nozzle (7) toward the direction of the limiting rod (6); the limiting slide groove (23) is formed on a cavity wall of an internal cavity on a side of the limiting rod (6) close to the second nozzle (7).

6. The pump head according to claim 4, characterized in that: The control knob (5) comprises a knob head located outside the push cap (2) and a knob rod connected to the knob head and extending into the cavity of the connecting valve; the second limiting member is a plurality of retaining positions (16) protruding from the knob rod and distributed at intervals along the circumference of the knob rod; the retaining positions (16) facing one side of the push cap (2) and the knob head facing one side of the push cap (2) are respectively arranged to fit the inner and outer sides of the push cap (2) to limit the axial movement of the control knob (5).

7. The pump head according to claim 1, characterized in that: The limiting rod (6) comprises a pair of first annular parts (20) in which the first sealing ring (18) is clamped, and a pair of second annular parts (21) in which the second sealing ring (19) is clamped.

8. The pump head according to claim 7, characterized in that: A pair of the first annular members (20) are each formed by two semi-annular members spaced apart from each other, and the second annular member (21) close to one side of the first annular member (20) is formed by two semi-annular members spaced apart from each other.

9. The pump head according to claim 1, characterized in that: The channel inlet of the connecting valve front channel (12) is arranged corresponding to the top of the second chamber.

10. A cosmetic bottle, characterized in that: The cosmetic bottle comprises a bottle body (4) and a pump head as described in any one of claims 1 to 9, wherein the pump head is detachably connected to the neck of the bottle body (4).

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