Pressing pump and packaging bottle

Abstract

The utility model relates to the technical field of pressing pumps, in particular to a pressing pump and a packaging bottle. The pressing pump comprises a pump head, a through first channel is formed in the pump head, and the first channel communicates with the outside. The interior of the cover cylinder is of a hollow structure, the bottom end of the pump head is movably inserted into the upper end of the interior of the cover cylinder, and an air inlet gap is formed between the pump head and the cover cylinder; the screw cap is in threaded connection with the packaging bottle, the top end of the screw cap extends upwards to form an extension part, the extension part is inserted into the lower end of the interior of the cap cylinder, and the interior of the extension part is a hollow air pump cavity; the liquid pump cylinder is arranged at the lower end in the screw cap, the tail end of the liquid pump cylinder extends into the packaging bottle, and a through liquid pump cavity is formed in the liquid pump cylinder; a piston assembly is further arranged in the cover cylinder, the tail end of the piston assembly penetrates through the rotary cover and extends into the liquid pump cylinder, and the outer wall of the piston assembly is sleeved with the elastic assembly. The overall size of the pressing pump is small, and the spring is externally arranged and separated from the liquid and does not react with the liquid in the packaging bottle.

Description

Technical Field

[0001] The utility model relates to the technical field of press pumps, in particular to a press pump and a packaging bottle. Background Art

[0002] Conventional small-volume foam pumps on the market have both the gas cylinder and the liquid cylinder arranged below the screw cap. Therefore, the entire pump core including the gas cylinder, the liquid cylinder and other structures need to be placed in the packaging bottle during use. Due to the influence of the pump core diameter, the inner thread size of the screw cap is relatively large, and usually the diameter of M20 cannot be achieved. This will result in a larger volume of the overall foam pump product, occupying a larger space, which limits the development of more mini and compact products.

[0003] In addition, the spring of the small screw-thread foam pump on the market is usually set in the liquid cylinder. During use, after the pump core is placed in the packaging bottle, the spring in the liquid cylinder will react with the liquid in the packaging bottle, which can easily cause the spring to rust and contaminate the contents. Utility Model Content

[0004] The utility model aims to provide a pressing pump and a packaging bottle, aiming to solve the technical problems that the existing foam pump has a large overall volume and a spring arranged in a liquid cylinder is easy to contaminate the liquid in the packaging bottle.

[0005] To achieve the above object, the utility model provides a press pump, including a pump head, wherein a first through channel is provided inside the pump head, and the first channel is connected to the outside;

[0006] The cover cylinder has a hollow structure inside, the bottom end of the pump head is movably inserted into the upper end of the cover cylinder, and an air intake gap is provided between the pump head and the cover cylinder;

[0007] A screw cap, which is threadedly connected to the packaging bottle, and the top of the screw cap extends upward to form an extension portion, the extension portion is inserted into the lower end of the cover tube, and the interior of the extension portion is a hollow air pump cavity;

[0008] A liquid pump barrel, which is arranged at the lower end of the screw cap, the end of which extends into the packaging bottle, and a through liquid pump cavity is arranged in the liquid pump barrel;

[0009] A piston assembly is also provided in the cover cylinder, and the end of the piston assembly passes through the screw cap and extends into the liquid pump cylinder. The elastic assembly is sleeved on the outer wall of the piston assembly, so that: when the pump head is pressed, the piston assembly pumps the liquid in the packaging bottle from the liquid pump cavity to the first channel; when the pump head is released, the elastic assembly drives the pump head to move up and return to its initial state.

[0010] Preferably, the piston assembly comprises a piston sleeve, a piston tube and a piston, the piston sleeve is arranged at the top end of the cover cylinder, the bottom end of the pump head abuts against the outer wall of the piston sleeve, the lower end of the piston sleeve is provided with an upwardly recessed mounting cavity, the top end of the piston tube is inserted into the mounting cavity, and the lower end of the piston tube passes through the screw cover and extends into the liquid pump cylinder;

[0011] A through second channel is provided in the piston sleeve, a through third channel is provided in the piston tube, the upper end of the piston is inserted in the third channel, the lower end of the piston is movably abutted against the inner wall of the liquid pump barrel, an air hole is provided on the side wall of the liquid pump barrel, and the piston is used to block or open the air hole when it moves, a through fourth channel is provided in the piston, and the second channel, the third channel and the fourth channel are connected to each other;

[0012] A pull rod is movably arranged in the piston tube, and the pull rod passes through the third channel and the fourth channel in sequence and extends into the liquid pump cavity. A limiting protrusion is arranged at the end of the pull rod, and the limiting protrusion movably abuts against the lower end of the piston. A recessed portion is also arranged at the lower end of the piston, and a movable gap is formed between the recessed portion and the bottom end of the pull rod;

[0013] The bottom end of the piston sleeve is recessed upward to form a groove, the top end of the blade is stuck in the groove, the bottom end of the blade extends out of the groove, and the bottom end of the blade extends to both sides to form an outer leaf and an inner leaf, the end of the outer leaf is movably attached to the inner wall of the piston sleeve, and the inner leaf is movably attached to the outer wall of the piston tube.

[0014] Preferably, the elastic component includes a spring and a spring seat, the middle part of the rotary cover is recessed downward to form a mounting groove, the spring seat is arranged in the mounting groove, the bottom end of the spring seat passes through the rotary cover and extends into the liquid pump chamber, and the bottom end of the spring seat is movably abutted against the piston, the spring is sleeved on the outer wall of the piston tube, and the bottom end of the spring is arranged in the spring seat.

[0015] Preferably, a mesh plug for forming foam is further provided in the first channel, the bottom end of the mesh plug is inserted into the top end of the piston sleeve, and the two ends of the mesh plug are respectively connected to the first channel and the second channel.

[0016] Preferably, a suction tube is detachably provided at the bottom end of the liquid pump barrel.

[0017] Preferably, a sealing gasket is also provided at the lower end of the liquid pump barrel.

[0018] Preferably, the liquid pump barrel comprises a liquid cylinder section, a liquid inlet section and a connecting section which are sequentially arranged from top to bottom, a sealing ball is movably provided in the liquid inlet section, the bottom end of the piston assembly extends into the liquid cylinder section, and the top end of the straw is clamped in the connecting section.

[0019] Preferably, a plurality of limiting parts are further provided at the top end of the liquid inlet section, and the limiting parts are used to limit the sealing ball to prevent the sealing ball from moving into the liquid pump cavity.

[0020] Preferably, a buckle is movably provided on the outer wall of the pump head.

[0021] In addition, the utility model also provides a packaging bottle using the pressing pump as described in any one of the above items.

[0022] The utility model discloses a pressing pump and a packaging bottle, which have the following beneficial effects:

[0023] 1. In the push pump structure of this scheme, the upper part of the screw cap is the air pump cavity, and the liquid pump barrel is located below the screw cap, that is, the air pump cavity is outside the packaging bottle, and only the liquid pump barrel is left in the packaging bottle, so that the internal thread size of the screw cap of the push pump can be as small as M20, which occupies a smaller volume and has a high space utilization rate, and can be suitable for packaging bottles of smaller sizes.

[0024] 2. The spring is installed between the piston tube and the spring seat. The entire spring is located in the air pump chamber above the screw cap and is separated from the liquid pump chamber below the screw cap. It will not react with the liquid to avoid contaminating the liquid in the packaging bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the pressing pump of the utility model;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the pressing pump of the utility model;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressing pump of the utility model in the pressing state;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the pressing pump of the utility model in the pressing state;

[0030] Figure 5It is a schematic cross-sectional structure diagram of the pressing pump of the utility model in a rebound state;

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of the pressing pump of the utility model in the pressing state;

[0032] Figure 7 It is a partial structural schematic diagram of the pressing pump of the utility model;

[0033] Figure 8 It is a partial structural schematic diagram of the pressing pump of the utility model;

[0034] Fig. 9 It is a structural schematic diagram of the piston sleeve of the pressing pump of the utility model.

[0035] In the accompanying drawings: 1- pump head, 11- first channel, 12- air intake gap, 13- mesh plug, 14- buckle, 2- cover tube, 3- screw cover, 31- extension part, 32- air pump cavity, 33- mounting groove, 5- liquid pump cylinder, 51- liquid pump cavity, 52- air hole, 53- straw, 54- sealing gasket, 55- liquid cylinder section, 56- liquid inlet section, 561- sealing ball, 562- limiting part, 57- connecting section, 6- piston assembly , 61-piston sleeve, 611-installation cavity, 612-second channel, 613-groove, 62-piston tube, 621-third channel, 63-piston, 631-fourth channel, 632-recess, 633-active gap, 64-pull rod, 641-limiting protrusion, 642-sealing channel, 65-blade, 651-outer blade, 652-inner blade, 7-elastic component, 71-spring, 72-spring seat.

[0036] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] like Figure 1 to Figure 2 As shown, a pressing pump comprises a pump head 1, wherein a first through channel 11 is provided inside the pump head, and the first channel 11 is connected to the outside;

[0041] The cover tube 2 has a hollow structure inside, the bottom end of the pump head 1 is movably inserted into the upper end of the cover tube 2, and an air intake gap 12 is provided between the pump head 1 and the cover tube 2;

[0042] The screw cap 3 is threadedly connected to the packaging bottle, and the top of the screw cap 3 extends upward to form an extension portion 31, and the extension portion 31 is inserted into the lower end of the cover tube 2, and the interior of the extension portion 31 is a hollow air pump chamber 32;

[0043] A liquid pump barrel 5, which is arranged at the lower end of the screw cap 3, the end of the liquid pump barrel 5 extends into the packaging bottle, and a through liquid pump cavity 51 is provided in the liquid pump barrel 5;

[0044] A piston assembly 6 is also provided in the cover cylinder 2, and the end of the piston assembly 6 passes through the screw cap 3 and extends into the liquid pump cylinder 5. The elastic assembly 7 is sleeved on the outer wall of the piston assembly 6, so that: when the pump head 1 is pressed, the piston assembly 6 pumps the liquid in the packaging bottle from the liquid pump cavity 51 to the first channel 11; when the pump head 1 is released, the elastic assembly 7 drives the pump head 1 to move upward and return to the initial state.

[0045] The present solution provides a novel press pump structure, in which the press pump is screwed onto the packaging bottle through the screw cap 3, the upper part of the screw cap 3 is the air pump chamber 32, and the liquid pump barrel 5 containing the liquid pump chamber 51 is located below the screw cap 3, that is, the air pump chamber 32 is outside the packaging bottle, and only the liquid pump barrel 5 is left in the packaging bottle, so that the internal thread size (screw thread) of the screw cap 3 of the press pump can be M20, the volume occupied is smaller, the space utilization rate is high, and it can be suitable for packaging bottles of smaller sizes.

[0046] Further, the piston assembly 6 includes a piston sleeve 61, a piston tube 62 and a piston 63, the piston sleeve 61 is arranged at the top end of the cover tube 2, the bottom end of the pump head 1 abuts against the outer wall of the piston sleeve 61, the lower end of the piston sleeve 61 is provided with an upwardly recessed mounting cavity 611, the top end of the piston tube 62 is inserted into the mounting cavity 611, and the lower end of the piston tube 62 passes through the screw cover 3 and extends into the liquid pump barrel 5;

[0047] The piston sleeve 61 is provided with a through second channel 612, the piston tube 62 is provided with a through third channel 621, the upper end of the piston 63 is inserted in the third channel 621, the lower end of the piston 63 is movably abutted against the inner wall of the liquid pump barrel 5, the side wall of the liquid pump barrel 5 is provided with an air hole 52, the piston 63 is used to block or open the air hole 52 when it moves, the piston 63 is provided with a through fourth channel 631, the second channel 612, the third channel 621 and the fourth channel 631 are connected to each other;

[0048] A pull rod 64 is movably provided in the piston tube 62. The pull rod 64 passes through the third channel 621 and the fourth channel 631 in sequence and extends into the liquid pump chamber 51. A limiting protrusion 641 is provided at the end of the pull rod 64. The limiting protrusion 641 movably abuts against the lower end of the piston 63. A recessed portion 632 is also provided at the lower end of the piston 63. A movable gap 633 is formed between the recessed portion 632 and the bottom end of the pull rod 64.

[0049] The bottom end of the piston sleeve 61 is recessed upward to form a groove 613, the top end of the blade 65 is stuck in the groove 613, the bottom end of the blade 65 extends out of the groove 613, and the bottom end of the blade 65 extends to both sides to form an outer leaf 651 and an inner leaf 652, the end of the outer leaf 651 is movably attached to the inner wall of the piston sleeve 61, and the inner leaf 652 is movably attached to the outer wall of the piston tube 62.

[0050] like Figures 2 to 6 As shown, by pressing the pump head 1, the middle of the pump head 1 is connected to the piston sleeve 61 through a buckle line to form a seal, the piston tube 62 is connected to the piston sleeve 61, and the blade 65 is installed between the piston tube 62 and the piston sleeve 61 to control the discharge and intake of gas; the pull rod 64 is installed between the piston tube 62 and the piston 63 to control the sealing with the upper and lower ends.

[0051] When the pump head 1 is pressed with external force, the pump head 1 drives the piston sleeve 61-the piston sleeve 61 with the piston tube 62-the piston tube 62 drives the pull rod 64 to move downward. First, the piston tube 62 will move downward for a short distance, so that the sealing channel 642 above the piston tube 62 and the pull rod 64 will be opened first. Continue to press downward, due to the friction between the piston 63 and the inner wall of the liquid pump barrel 5, the pull rod 64 and the piston tube 62 will first move downward for a distance. At this time, the piston tube 62 and the piston 63 are in contact, and the sealing channel 642 below the piston tube 62 and the pull rod 64 is still in an open state. When the pressure continues to move downward, the piston 63 will move downward together with the piston tube 62 and the piston sleeve 61, and the air in the air pump chamber 32 will break the inner leaf 652 of the blade 65, and then pass through the sealing channel 642 between the piston tube 62 and the piston sleeve 61, and move from the first channel 11 of the pump head 1 to the pump port to be discharged to the external space. When the piston 63 moves downward, the air hole 52 of the liquid pump barrel 5 will open, and the air outside the packaging bottle will pass through the gap of the screw cap 3, the gap between the liquid pump barrel 5 and the screw cap 3, and the groove at the bottom of the spring seat 72, and finally replenish into the bottle from the air hole 52 of the liquid pump barrel 5, thereby balancing the air pressure in the packaging bottle.

[0052] When the hand is released, under the action of the spring 71 of the elastic component 7, the piston tube 62 first moves to the matching position on the pull rod 64 to form an inclined seal. When continuing to move upward, the pull rod 64 contacts the piston 63, and then the pull rod 64 drives the piston 63 to move upward. Finally, the upper part of the piston 63 contacts the spring seat 72, and the upward movement stops. The piston 63 forms a seal with the air hole 52 of the liquid pump barrel 5, and the gas replenishment in the bottle is suspended. At this time, the liquid pump chamber 51 in the liquid pump barrel 5 will form a vacuum environment. Since the pressure in the packaging bottle is greater than the pressure in the liquid pump chamber 51, the beads will move upward slightly to open, and the liquid in the packaging bottle will enter the liquid pump chamber 51 through the beads and be stored. At the same time, during the upward movement, the internal pressure above the screw cap 3 is less than the external pressure of the air. The external air rushes through the gap channel between the pump head 1 and the cover barrel 2 to open the outer leaf 651 of the blade 65, replenishing the air above the screw cap 3, thereby balancing the air pressure in the air pump chamber 32 above the screw cap 3.

[0053] When the button is pressed again, the above action will be repeated. The difference is that this time, liquid is discharged. The liquid will mix with the air discharged from the upper space of the screw cap 3 through the inner leaf 652 of the blade 65 after passing through the sealed channel 642 formed by the top of the pull rod 64 and the piston tube 62. Then, the air will be foamed through the mesh plug 13 to form foam, and finally discharged to the external space through the first channel 11 in the middle of the pump head 1. When the button is pressed again, the above action will be repeated to continuously discharge the foam liquid until the liquid is consumed or the external force disappears.

[0054] Furthermore, the elastic component 7 includes a spring 71 and a spring seat 72. The middle part of the rotary cover 3 is recessed downward to form a mounting groove 33. The spring seat 72 is arranged in the mounting groove 33. The bottom end of the spring seat 72 passes through the rotary cover 3 and extends into the liquid pump chamber 51. The bottom end of the spring seat 72 is movably abutted against the piston 63 to limit the upward movement of the piston 63. The spring is sleeved on the outer wall of the piston tube 62. The spring seat 72 fits with the outer wall of the piston tube 62 to form a seal to prevent air leakage when pressed, and the bottom end of the spring is arranged in the spring seat 72.

[0055] In this embodiment, the spring 71 is installed between the piston tube 62 and the spring seat 72. The outer diameter of the spring seat 72 matches the inner diameter of the screw cap 3 to achieve sealing. The spring 71 is located in the air pump chamber 32 above the screw cap 3 and is separated from the liquid pump chamber 51 below the screw cap 3. It will not react with the liquid and will not contaminate the liquid in the packaging bottle. The spring seat 72 is set in the mounting groove 33 above the screw cap 3. The spring seat 72 can limit the position of the spring 71 so that it will not detach from the air pump chamber 32.

[0056] Furthermore, a mesh plug 13 for forming foam is provided in the first channel 11, the bottom end of the mesh plug 13 is inserted into the top end of the piston sleeve 61, and the two ends of the mesh plug 13 are respectively connected to the first channel 11 and the second channel 612. The mesh plug 13 is provided in the pump head 1, and after the air and liquid are mixed, they pass through the wire mesh in the mesh plug 13 to form foam and are finally discharged to the outside.

[0057] Furthermore, the bottom end of the liquid pump barrel 5 is detachably provided with a suction tube 53. The suction tube 53 is inserted into the bottom of the liquid pump barrel 5 to contact the liquid in the packaging bottle. The suction tube 53 can extend the length of the liquid pump barrel 5, so that the press pump of this scheme can be used for packaging bottles with greater heights and has a wider range of applications. The top end of the suction tube 53 is connected to the liquid pump barrel 5, and the liquid in the packaging bottle flows through the suction tube 53 and the liquid pump chamber 51 in sequence and then flows upward.

[0058] Furthermore, a sealing gasket 54 is also provided at the lower end of the liquid pump barrel 5. An annular gasket is also provided at the lower end surface of the liquid pump barrel 5, which is covered on the packaging bottle with the screw cap 3, so that the sealing performance of the screw cap 3 and the liquid pump barrel 5 can be better.

[0059] Furthermore, the liquid pump barrel 5 includes a liquid barrel section 55, a liquid inlet section 56 and a connecting section 57 which are arranged in sequence from top to bottom, a sealing ball 561 is movably provided in the liquid inlet section 56, the bottom end of the piston assembly 6 extends into the liquid barrel section 55, and the top end of the straw 53 is clamped in the connecting section 57.

[0060] A sealer, namely a glass bead, is provided in the liquid inlet section 56 of the liquid pump barrel 5. The glass bead is arranged below the liquid pump barrel 5 to control the sealing of the space below the suction tube 53, and allows the liquid in the packaging bottle to pass through and enter the liquid pump chamber 51 when the pressing pump is running. Because there is a pressure difference between the packaging bottle and the liquid pump barrel 5, the glass bead moves upward, thereby opening the channel. Under the action of the pressure difference, the liquid will also flow through the suction tube 53 to the liquid pump barrel 5. Since the glass bead blocks the entrance of the liquid inlet section 56, the glass bead can prevent the liquid in the liquid pump chamber 51 from flowing back into the packaging bottle.

[0061] Furthermore, a plurality of limiting portions 562 are provided at the top of the liquid inlet section 56, and the limiting portions 562 are used to limit the sealing ball 561 to prevent the sealing ball 561 from moving into the liquid pump chamber 51. The limiting portions 562 are a plurality of arc segments arranged at intervals, which can limit the range of movement of the sealing ball 561 within the liquid inlet section 56, and can achieve a better sealing effect.

[0062] Furthermore, the outer wall of the pump head 1 is movably provided with a buckle 14. The buckle 14 is used to support the pump head 1 so that it cannot be pressed down when it is not necessary (such as during transportation) to prevent leakage. When the buckle 14 on the outside of the pump head 1 is removed, the pump head 1 and its internal structure return to a normal pressing state.

[0063] In addition, the utility model also provides a packaging bottle, using any of the above-mentioned pressing pumps. The packaging bottle uses any of the above-mentioned pressing pumps, that is, the packaging bottle has the same beneficial effects as the above-mentioned pressing pumps, which will not be described one by one here.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A compression pump, characterized in that: include: A pump head (1) having a first through passage (11) formed therein, wherein the first passage (11) is in communication with the outside; The cover cylinder (2) has a hollow structure inside, the bottom end of the pump head (1) is movably inserted into the upper end inside the cover cylinder (2), and an air intake gap (12) is provided between the pump head (1) and the cover cylinder (2); A screw cap (3) is threadably connected to the packaging bottle, and the top end of the screw cap (3) extends upward to form an extension portion (31). The extension portion (31) is inserted into the lower end of the cover tube (2), and the interior of the extension portion (31) is a hollow air pump chamber (32); A liquid pump barrel (5) is arranged at the lower end of the screw cap (3), the end of the liquid pump barrel (5) extends into the packaging bottle, and a through liquid pump chamber (51) is provided in the liquid pump barrel (5); A piston assembly (6) is also provided in the cover cylinder (2), and the end of the piston assembly (6) passes through the screw cover (3) and extends into the liquid pump cylinder (5). The elastic assembly (7) is sleeved on the outer wall of the piston assembly (6), so that: when the pump head (1) is pressed, the piston assembly (6) pumps the liquid in the packaging bottle from the liquid pump cavity (51) to the first channel (11); when the pump head (1) is released, the elastic assembly (7) drives the pump head (1) to move upward and return to an initial state.

2. A pressing pump according to claim 1, characterized in that: The piston assembly (6) comprises a piston sleeve (61), a piston tube (62) and a piston (63); the piston sleeve (61) is arranged at the top end of the cover cylinder (2); the bottom end of the pump head (1) abuts against the outer wall of the piston sleeve (61); the lower end of the piston sleeve (61) is provided with an upwardly recessed mounting cavity (611); the top end of the piston tube (62) is inserted into the mounting cavity (611); the lower end of the piston tube (62) passes through the rotary cover (3) and extends into the liquid pump cylinder (5); The piston sleeve (61) is provided with a through second channel (612), the piston tube (62) is provided with a through third channel (621), the upper end of the piston (63) is inserted into the third channel (621), the lower end of the piston (63) is movably abutted against the inner wall of the liquid pump barrel (5), the side wall of the liquid pump barrel (5) is provided with an air hole (52), the piston (63) is used to block or open the air hole (52) when it moves, the piston (63) is provided with a through fourth channel (631), the second channel (612), the third channel (621) and the fourth channel (631) are connected to each other; A pull rod (64) is movably arranged in the piston tube (62), and the pull rod (64) passes through the third channel (621) and the fourth channel (631) in sequence and extends into the liquid pump chamber (51). A limiting protrusion (641) is arranged at the end of the pull rod (64), and the limiting protrusion (641) movably abuts against the lower end of the piston (63). A recessed portion (632) is also arranged at the lower end of the piston (63), and a movable gap (633) is formed between the recessed portion (632) and the bottom end of the pull rod (64); The bottom end of the piston sleeve (61) is recessed upward to form a groove (613), the top end of the blade (65) is stuck in the groove (613), the bottom end of the blade (65) extends out of the groove (613), and the bottom end of the blade (65) extends to both sides to form an outer blade (651) and an inner blade (652), the end of the outer blade (651) is movably attached to the inner wall of the piston sleeve (61), and the inner blade (652) is movably attached to the outer wall of the piston tube (62).

3. A pressing pump according to claim 2, characterized in that: The elastic component (7) comprises a spring (71) and a spring seat (72); the middle portion of the rotary cover (3) is recessed downward to form a mounting groove (33); the spring seat (72) is arranged in the mounting groove (33); the bottom end of the spring seat (72) passes through the rotary cover (3) and extends into the liquid pump chamber (51); the bottom end of the spring seat (72) is movably abutted against the piston (63); the spring (71) is sleeved on the outer wall of the piston tube (62); and the bottom end of the spring (71) is arranged in the spring seat (72).

4. A pressing pump according to claim 2, characterized in that: A mesh plug (13) for forming foam is also provided in the first channel (11), the bottom end of the mesh plug (13) is inserted into the top end of the piston sleeve (61), and the two ends of the mesh plug (13) are respectively connected to the first channel (11) and the second channel (612).

5. A pressing pump according to claim 1, characterized in that: The bottom end of the liquid pump barrel (5) is provided with a detachable suction tube (53).

6. A pressing pump according to claim 1, characterized in that: A sealing gasket (54) is also provided at the lower end of the liquid pump barrel (5).

7. A pressing pump according to claim 5, characterized in that: The liquid pump barrel (5) comprises a liquid barrel section (55), a liquid inlet section (56) and a connecting section (57) which are arranged in sequence from top to bottom. A sealing ball (561) is movably arranged in the liquid inlet section (56). The bottom end of the piston assembly (6) extends into the liquid barrel section (55), and the top end of the suction tube (53) is clamped in the connecting section (57).

8. A pressing pump according to claim 7, characterized in that: A plurality of limiting portions (562) are also provided at the top end of the liquid inlet section (56), and the limiting portions (562) are used to limit the sealing ball (561) to prevent the sealing ball (561) from moving into the liquid pump chamber (51).

9. The compression pump according to claim 1, characterized in that: The outer wall of the pump head (1) is movably provided with a buckle (14).

10. A packaging bottle, characterized in that: The packaging bottle is provided with a pressing pump as described in any one of claims 1-9.

Images