CN217625104U

CN217625104U - Air blocking pump

Info

Publication number: CN217625104U
Application number: CN202221197663.3U
Authority: CN
Inventors: 余仁卫
Original assignee: Hangzhou Kanghong Industry & Trade Co ltd
Current assignee: Hangzhou Kanghong Industry & Trade Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-21
Anticipated expiration: 2032-05-17

Abstract

The scheme discloses an air blocking pump which comprises a pump core and a head cap arranged at the upper end of the pump core, wherein a one-way valve mounting blind hole is formed in the head cap, and the upper end of the pump core is opened on the side wall of the one-way valve mounting blind hole; an air blocking one-way valve is arranged in the one-way valve mounting blind hole; the air blocking check valve includes: the sleeve is fixedly arranged in the one-way valve mounting blind hole in a sealing way; the outer side end of the sleeve is provided with a liquid outlet which is of an outward convergent structure; the interior of the sleeve is communicated with the upper end opening of the pump core; the shape and the size of the outer side end of the valve core are matched with those of the liquid outlet; one end of the check valve spring is connected with the bottom of the blind hole for installing the check valve, and the other end of the check valve spring is connected with the inner side end of the valve core. The beneficial effect of this scheme is: the air blocking pump has the advantages of small number of parts, simple structure and easy assembly, and can effectively block the air circulation inside and outside the pump in a non-use state.

Description

Air blocking pump

Technical Field

The utility model relates to the field of packaging, specifically an air blocking pump, mainly used emulsion, water aqua class cosmetics's packing.

Background

The packaging of emulsion and water aqua cosmetics is usually provided with a liquid taking mechanism. The common liquid taking mechanism comprises a pump and a liquid suction pipe, and the pump does not need to open a bottle mouth when in use, so that the use is more convenient. Such as the emulsion pump described in chinese patent document CN 103303557A. In the traditional emulsion pump, the one-way valve structure is arranged in the pump core, and when the pump is in a non-use state, the space between the liquid outlet and the one-way valve structure is exposed in the air. In the case of a liquid cosmetic product rich in nutrients, this space may be contaminated, which may impair the health of the user. Chinese patent document CN212590859U, 26/2/2021, discloses "an opening/closing nozzle of a discharge pump for a cosmetic container", including: a container body (10) for containing cosmetic contents, the upper part of which is provided with an inlet (11) into which the contents can be injected; a shoulder member (20) having a cylindrical shape with an open upper and lower portion, and coupled to an upper end shoulder of the container body (10); an inner lid (30) which is a cylindrical member having open upper and lower portions and inserted through an upper hole of the shoulder member (20), and has a lower inner peripheral edge screwed to an inlet portion (11) of the container body (10); a discharge pump (40) which is combined in the inner cover (30) in a manner of being inserted in the inner cover; an opening/closing nozzle (50) which is coupled to the upper end of the discharge pump (40) and discharges the cosmetic content when the opening/closing nozzle performs a pressing operation; a cover part (60) combined on the upper side of the shoulder part (20); a piston (70) coupled to a lower inner circumferential edge of the container body (10); a bottom cap (80) that covers the lower surface and the outer peripheral edge of the container body (10), wherein the open/close nozzle (50) comprises: a cylindrical lower body (51); a content transport pipe (52) formed in a shape of a "" inside the lower body (51) and connected to the discharge pump (40); an opening/closing member (54) which is provided in the content transport pipe (52) and is operated by the discharge pressure of the cosmetic content to open and close the discharge port (53); an upper body (55) coupled to an upper portion of the lower body (51). The utility model discloses block inside the air inflow nozzle to cosmetic container to prevent to improve the reliability of product simultaneously because of the rotten of the content that the air inflow took place inside the nozzle and the solidification of content in the nozzle. However, the scheme has the disadvantages of complex structure, numerous parts and inconvenient assembly.

Disclosure of Invention

Based on the above problem, the utility model provides an air blocking pump of part small in quantity, simple structure, easily assembly can be in the effective separation pump inside and outside circulation of air of non-user state.

In order to realize the purpose of the invention, the utility model adopts the following technical proposal: an air blocking pump comprises a pump core and a head cap arranged at the upper end of the pump core,

a one-way valve mounting blind hole is formed in the head cap, and an opening is formed in the side wall of the one-way valve mounting blind hole at the upper end of the pump core;

an air blocking one-way valve is arranged in the one-way valve mounting blind hole;

the air blocking check valve includes:

the sleeve is fixedly arranged in the one-way valve mounting blind hole in a sealing manner; the outer side end of the sleeve is provided with a liquid outlet which is of an outward convergent structure; the interior of the sleeve is communicated with the upper end opening of the pump core;

the shape and the size of the outer side end of the valve core are matched with those of the liquid outlet;

one end of the check valve spring is connected with the bottom of the blind hole for installing the check valve, and the other end of the check valve spring is connected with the inner side end of the valve core.

Preferably, the side wall of the sleeve is provided with a flow guide hole in a penetrating manner.

Preferably, the one-way valve mounting blind hole is a circular hole, and the sleeve is a circular tube with a corresponding size; a circle of flow guide grooves are concavely arranged on the side wall of the sleeve and correspond to the upper end opening of the pump core; the diversion hole is arranged at the bottom of the diversion trench.

Preferably, a spring positioning convex ring is convexly arranged on the side wall of the valve core, the one-way valve spring is sleeved on the valve core, and the outer side end of the one-way valve spring abuts against the inner side end face of the spring positioning convex ring.

Preferably, the movable position of the spring positioning convex ring is located from the inner side end of the opening at the upper end of the pump core of the sleeve to the inner side end of the sleeve; the outer diameter of the spring positioning convex ring is in interference fit with the bore diameter of the blind hole for installing the one-way valve.

Preferably, the check valve mounting blind hole is a stepped hole having a large outer side and a small inner side, and the inner end of the sleeve abuts against the stepped surface.

Preferably, the outer side wall of the sleeve is clamped with the inner side wall of the blind mounting hole of the one-way valve.

Preferably, the liquid outlet is a circular hole, the outer side end of the valve core is in a hemispherical shape or a spherical crown shape, and the maximum diameter of the hemispherical shape or the spherical crown shape is larger than the aperture of the liquid outlet.

The air blocking pump of this scheme design adopts traditional pump core, sets the head cap. The head cap is internally and transversely provided with a blind mounting hole of the one-way valve, and the hole wall is provided with an opening which is communicated with the upper opening of the pump core, thereby forming a three-way pipe structure with an outer opening, an inner closed end and an lower opening. In the check valve installation blind hole, the air blocking check valve can be fixed in a sealing mode through structures such as clamping and the like. The air blocking one-way valve comprises a sleeve, a valve core and a one-way valve spring. The sleeve has three functions: firstly, the one-way valve is fixed with a mounting blind hole of the one-way valve; secondly, the front end opening forms the convergence structure, forms closed effect with the case front end cooperation including establishing of cover, and thirdly, the sleeve pipe inboard switches on with the upper end opening of pump core, ensures that the material can extrude from the middle sleeve pipe. A circle of spring positioning convex rings which protrude outwards are arranged outside the side wall of the valve core, the spring positioning convex rings can be abutted against one end of a one-way valve spring, and the other end of the one-way valve spring is abutted against the bottom of the blind hole for installing the one-way valve, so that the front end of the valve core is pushed forwards in a normal state and is matched with the opening at the front end of the sleeve to form a closed state; meanwhile, the size of the spring positioning convex ring can be set according to the pipe diameter of the inner side of the sleeve, so that the sealing effect of interference fit is formed, and materials can be prevented from overflowing to the area where the one-way valve spring is located.

On the inboard problem that switches on with the upper end opening of pump core of sleeve pipe, in order to improve assembly efficiency, check valve installation blind hole and sleeve pipe are designed for round hole and pipe respectively, and the upper end open position design that corresponds the pump core on the sheathed tube lateral wall has the guiding gutter of round indent, and the design that the tank bottom of guiding gutter link up has the guiding gutter, consequently no matter with which angle the sleeve pipe of packing into, can ensure all that the material can follow the upper end opening of pump core through guiding gutter, get into the sleeve pipe inboard.

Under normal state, the front end of the valve core is sealed and propped against the front end opening of the sleeve, so that the air circulation inside and outside the pump can be prevented from being blocked effectively; when the pressure exceeds the elastic force of the one-way valve spring, the valve core is pushed to the rear end, the opening at the front end of the sleeve is exposed, and the materials are extruded out; after the material is extruded, the pressure is relieved, and the valve core moves forward again under the action of the elastic force of the one-way valve spring to block the opening at the front end of the sleeve again.

To sum up, the beneficial effect of this scheme is: the air blocking pump has the advantages of small number of parts, simple structure and easy assembly, and can effectively block the air circulation inside and outside the pump in a non-use state.

Drawings

Fig. 1 is an axial sectional view of the present invention in a closed state;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an exploded view of the major components;

fig. 4 is an axial sectional view of the present invention in a liquid discharge state.

Wherein: 1 pump core, 2 screw thread covers, 3 outer covers, 4 pipettes, 5 caps, 51 one-way valve installation blind holes, 6 pump core springs, 7 one-way valve springs, 8 sleeves, 81 temporary liquid storage spaces, 82 liquid outlets, 83 diversion grooves, 84 diversion holes, 85 sleeve clamping ribs, 9 valve cores, 91 spring positioning convex rings and Z outer covers.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Examples

The embodiment shown in fig. 1 is an air blocking pump, which comprises a pump core 1, a head cap 5 is arranged above the pump core 1, a threaded cover 2 and an outer cover 3 are fixedly connected to the outer side of the pump core 1, and an outer cover Z is buckled on the outer cover 3. The lower end opening of the pump core 1 is connected with a liquid suction pipe 4, the upper end opening is positioned in a head cap 5, and a pump core spring 6 is also arranged on the pump core 1.

Referring to fig. 2 and 3, a blind check valve mounting hole 51 is radially formed in the head cap 5, the left end of the blind check valve mounting hole 51 is open and is a front end, and the right end of the blind check valve mounting hole is closed and is a rear end. The blind check valve mounting hole 51 is a circular stepped hole having a large left end and a small right end. The middle side wall of the one-way valve mounting blind hole 51 is communicated downwards and communicated with the upper end opening of the pump core 1. The sleeve 8 is fixedly and hermetically inserted in the one-way valve mounting blind hole 51.

The sleeve 8 is a circular tube, the front end of which is a liquid outlet 82, and the liquid outlet 82 is in a convergent shape with a small outer part and a large inner part. The rear of the sleeve 8 abuts against the stepped surface of the check valve mounting blind hole 51. The middle part of the sleeve 8 is provided with a circle of guide grooves 83 which are inwards concave corresponding to the position of the upper end opening of the pump core 1, and two guide holes 84 which run through the bottom of the guide grooves 83 are circumferentially and symmetrically arranged at the bottom of the guide grooves 83. The side wall of the front end of the sleeve 8 is also provided with a circle of sleeve clamping ribs 85 which are in adaptive clamping connection with the corresponding structure of the side wall of the one-way valve installation blind hole 51.

A valve core 9 is arranged in the sleeve 8. The valve plug 9 is in a round rod shape, a gap is reserved between the valve plug 9 and the sleeve 8, namely a temporary liquid storage space 81, and the valve plug 9 can freely move back and forth in the sleeve 8. The front end of the valve core 9 is hemispherical, and the maximum diameter of the hemisphere is larger than the diameter of the liquid outlet 82. The middle part of the valve core 9 is provided with a circle of spring positioning convex ring 91 which protrudes outwards on the side wall at the position deviated from the back. The diameter of the spring positioning convex ring 91 is in interference fit with the inner diameter of the sleeve 8 at the corresponding position to form a sealing effect, and meanwhile, the rear end face of the spring positioning convex ring 91 is abutted against the front end of the one-way valve spring 7. The one-way valve spring 7 is sleeved outside the rear part of the valve core 9, and the rear end of the one-way valve spring abuts against the bottom of the rear end hole of the one-way valve installation blind hole 51.

In the air blocking pump of this embodiment, as shown in fig. 1, under the normal state, the front end of the valve element 9 seals the liquid outlet 82 under the elastic force of the check valve spring 7, so as to prevent air from flowing between the inside and the outside of the pump and keep the inside of the pump clean. When the user presses the head cap 5, the pump cartridge 1 pumps the liquid in the bottle below through the pipette 4, and enters the guide groove 83 through the upper end opening of the pump cartridge 1, and further enters the sleeve 8 through the guide hole 84, and is accumulated in the temporary liquid storage space 81. When the pump pressure is continued, more liquid enters the temporary liquid storage space 81, causing the pressure in the temporary liquid storage space 81 to increase until the pressure is greater than the elastic force of the check valve spring 7, the valve element 9 is pushed to the rear end, the liquid outlet 82 is opened, the liquid accumulated in the temporary liquid storage space 81 is squeezed out from the liquid outlet 82 for use, the pressure in the temporary liquid storage space 81 is reduced due to the squeezing of the liquid, and the elastic force of the check valve spring 7 pushes the valve element 9 to the front end again, closing the liquid outlet 82.

Claims

1. An air blocking pump, which comprises a pump core (1) and a head cap (5) arranged at the upper end of the pump core (1), and is characterized in that,

a one-way valve mounting blind hole (51) is formed in the head cap (5), and the upper end of the pump core (1) is opened on the side wall of the one-way valve mounting blind hole (51);

an air blocking one-way valve is arranged in the one-way valve mounting blind hole (51);

the air blocking check valve includes:

the sleeve (8) is fixedly arranged in the one-way valve mounting blind hole (51) in a sealing way; a liquid outlet (82) is arranged at the outer side end of the sleeve (8), and the liquid outlet (82) is of an outward convergent structure; the interior of the sleeve (8) is communicated with the upper end opening of the pump core (1);

the shape and the size of the outer side end of the valve core (9) are matched with the shape and the size of the liquid outlet (82);

one end of the one-way valve spring (7) is connected with the bottom of the one-way valve mounting blind hole (51) in an abutting mode, and the other end of the one-way valve spring is connected with the inner side end of the valve core (9) in an abutting mode.

2. An air dam pump as defined in claim 1, wherein the side wall of the sleeve (8) is provided with a pilot hole (84) therethrough.

3. An air cutoff pump according to claim 2, characterized in that the check valve mounting blind hole (51) is a circular hole, and the sleeve (8) is a circular tube of corresponding size; a circle of guide grooves (83) are concavely arranged on the side wall of the sleeve (8), and the guide grooves (83) correspond to the upper end opening of the pump core (1); the diversion hole (84) is arranged at the bottom of the diversion groove (83).

4. An air blocking pump according to claim 1, 2 or 3, wherein the valve core (9) is provided with a spring positioning convex ring (91) protruding outwards from the side wall, the check valve spring (7) is sleeved on the valve core (9), and the outer end of the check valve spring abuts against the inner end face of the spring positioning convex ring (91).

5. An air stop pump according to claim 4, wherein the spring retainer ring (91) is movable from an inner end of the upper opening of the pump cartridge (1) of the sleeve (8) to an inner end of the sleeve (8); the outer diameter of the spring positioning convex ring (91) is in interference fit with the bore diameter of the one-way valve installation blind hole (51).

6. An air dam pump as defined in claim 1, 2 or 3, wherein the blind check valve mounting hole (51) is a stepped hole having a large outer side and a small inner side, and the inner end of the sleeve (8) abuts on the stepped surface.

7. An air dam pump as defined in claim 1, 2 or 3, wherein the outer side wall of the sleeve (8) is engaged with the inner side wall of the blind check valve mounting hole (51).

8. An air blocking pump according to claim 1, 2 or 3, wherein the outlet (82) is a circular hole, the outer end of the valve core (9) is hemispherical or spherical, and the maximum diameter of the hemispherical or spherical shape is larger than the diameter of the outlet (82).