Lock catch type portable vacuum bag emulsion bottle

Abstract

The invention relates to a lock catch type portable vacuum bag emulsion bottle which is designed for solving the technical problems that existing similar products are not carried and used by adopting rectangular structures, vacuum bags in the products are inconvenient to assemble and disassemble, and automatic production and assembly are difficult. A spray head assembly and a bottle body assembly of the portable vacuum bag emulsion bottle are integrally buckled to form a cuboid, and a head cap is arranged in a pressing hole in the end corner of one side of the top of an outer cover; the key points are as follows: a vacuum bag is arranged in an outer bottle of the bottle body assembly, a sealed large ring is arranged at a cover opening at the bottom of the outer cover, the pump core assembly is buckled and fixed in a buckling groove in a first pump core hole of the large ring, and the pump core assembly extends into a bag opening of the vacuum bag through a second pump core hole of the gland; the vacuum bag is fixed to a second pump core hole of the gland through a flange sleeve at a bag opening, and a gland seal is fixedly arranged at a top bottle opening of the outer bottle. A cover opening at the bottom of the outer cover and an outer cover inner cavity connected with the large ring are provided with a sliding cover which is pressed or unlocked by moving the limiting head cap left and right; and one side of the sliding cover is provided with a shifting button extending out of the outer cover.

Description

Technical Field

[0001] The invention relates to a vacuum bottle, in particular to a lock-type portable vacuum bag lotion bottle. Background Art

[0002] A vacuum bottle refers to a container that can isolate gas from the outside temperature or isolate external bacteria. The vacuum bottles sold on the market are composed of a cylindrical or ellipsoidal container and a piston placed at the bottom. Some vacuum bottles on the market now use an inner bag structure, such as the application number 202322685340.X disclosed in the Chinese patent literature, the authorization announcement date is 2024.06.04, and the utility model name is "a vacuum cosmetic container"; other perfume bottles use a rectangular structure, such as the application number 202120562547.6 disclosed in the Chinese patent literature, the authorization announcement date is 2024.12.21, and the utility model name is "perfume bottle assembly". However, the above-mentioned vacuum bottles adopt a rectangular structure design, and the design of inner bags or vacuum bags is relatively rare. The buckle connection structure design between the components is poor, and it is difficult to automate production and assembly, and replace the inner bag for use. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a lock-type portable vacuum bag lotion bottle in the art, so as to solve the technical problems that existing similar products rarely adopt a rectangular structure for carrying and use, the vacuum bag inside is inconvenient to load and unload, and it is difficult to automate production and assembly. The purpose is achieved through the following technical solutions.

[0004] A lock-type portable vacuum bag lotion bottle, the spray head assembly of the portable vacuum bag lotion bottle is buckled with the bottle body assembly, the nozzle of the spray head assembly extends out of an open slide groove or a waist-shaped slide hole on a side of an outer cover, a vacuum bag is arranged in the outer bottle of the bottle body assembly, a pump core assembly is arranged at the bag mouth of the vacuum bag, and the valve stem of the pump core assembly is connected with the liquid inlet hole of the head cap; the key points of its structural design are that a pressing hole is arranged at the top of the outer cover of the spray head assembly, and the head cap is exposed and limited in the pressing hole of the outer cover; a large sealing circle is arranged at the bottom cover mouth of the outer cover, and at the same time, the top pump mouth of the pump body of the pump core assembly is buckled and fixed to the snap groove in the first pump core hole of the large circle, the bottom of the pump body of the pump core assembly extends into the bag mouth of the vacuum bag through the second pump core hole of the pressure cover, the vacuum bag is fixed to the second pump core hole of the pressure cover through the flange sleeve at the bag mouth, a gasket is arranged at the top hole of the flange sleeve of the vacuum bag extending out of the pressure cover, and the pressure cover seal is fixedly arranged at the top bottle mouth of the outer bottle. Thus, the vacuum bag is fixed to the second pump core hole of the gland through the flange sleeve, and at the same time, the pump core assembly passes through the first pump core hole of the large circle and the second pump core hole of the gland, extends into the vacuum bag, and is fixedly arranged in the buckle groove in the first pump core hole of the large circle. In the above structure, further, an oblique opening is provided on one side of the inner diameter of the second pump core hole of the gland, so that the flange sleeve at the mouth of the vacuum bag can be rotated and installed into place along the oblique opening of the second pump core hole of the gland.

[0005] The spray head assembly and the bottle body assembly are buckled together to form a rectangular parallelepiped, the head cap is set at the pressing hole at the end corner of one side of the top of the outer cover, and the pump core assembly, the second pump core hole, and the flange sleeve are respectively set on one side of the large circle, the gland, and the vacuum bag. The above is a structural embodiment set on one side of the head cap, thereby realizing eccentric pressing to discharge liquid; it can also be set in the middle, and the corresponding limiting structure below needs to be adjusted and improved accordingly.

[0006] The cover opening at the bottom of the outer cover is connected to the inner cavity of the outer cover with a large circle, and the sliding piece protruding from the top of the large circle is inserted into the sliding hole of the sliding cover. The valve stem of the pump core assembly extends out of the pump core waist-shaped hole on one side of the sliding cover. The large circle buckles symmetrically arranged on both sides of the outer diameter of the large circle are buckled and fixed to the outer cover buckle grooves symmetrically arranged on both sides of the cover opening at the bottom of the outer cover. The outer side of the waist-shaped hole of the pump core at the top of the sliding cover is provided with symmetrically arranged limit columns, and the limit columns correspond to the cap openings on both sides of the bottom of the head cap respectively. A dial button is provided on the other side of the sliding cover, and one end of the dial button extends out of the dial button waist-shaped hole on one side of the outer cover. When the dial button drives the sliding cover to move to the position where the limit column of the sliding cover is misaligned with the cap opening at the bottom of the head cap, the head cap is pressed and moved downward. The above-mentioned sliding cover is driven to slide by the corresponding dial button, which prevents the head cap from being pressed and used when the sliding cover is locked, and facilitates the pressing of the head cap after the dial button drives the sliding cover to be unlocked.

[0007] The other end of the button is buckled and fixed to the fixing hole in the step plate protruding on the other side of the inner slide cover of the outer cover. The above is a specific structural embodiment of the connection and fixation of the button and the inner slide cover of the outer cover, and it can also be connected and fixed in other ways.

[0008] The middle outer diameter of the sliding cover in the outer cover is symmetrically provided with sliding edges on both sides, and the limiting plates symmetrically provided on both sides of the top of the large circle below the sliding cover are buckled with the sliding edges on both sides of the sliding cover to move left and right, thereby cooperating with the waist-shaped hole of the pump core of the sliding cover to limit the movement of the sliding cover.

[0009] The large circle buckles symmetrically arranged on both sides of the large circle outer diameter are buckled and fixed to the outer cover buckle grooves symmetrically arranged on both sides of the cover opening at the bottom of the outer cover. At the same time, the side buckle ribs symmetrically arranged on the other two sides of the large circle outer diameter are buckled and fixed to the side buckle grooves symmetrically arranged on both sides of the cover opening at the bottom of the outer cover.

[0010] The large circle slide is inserted into the positioning groove at the bottom cap opening of the head cap above the top of the large circle slide, and the large circle slide is inserted into the positioning groove of the head cap through the opening of the limit column on one side of the slide cover. The above structure further provides stability during the pressing and use process of the head cap in the unlocked state.

[0011] The gland buckles symmetrically arranged on both sides of the top of the gland are buckled and fixed to the large circle buckle holes symmetrically arranged on both sides of the bottom of the large circle, thereby further facilitating the large circle, the gland and the outer cover to be connected as one.

[0012] A guide rod is provided at the suction pipe hole at the bottom of the pump body where the pump core is assembled, and one end of the guide rod is provided with three ribs arranged at equal angles, and one end of the rib is communicated with the sleeve opening at the other end of the guide rod through an opening.

[0013] An elastic sleeve is provided at the bottom water inlet hole of the pump body of the pump core assembly, and the valve needle above the elastic sleeve is buckled with one end of the valve stem, and a piston is provided on the outer diameter of the valve needle at the buckled connection, and the outer diameter of the piston is abutted against the inner wall of the pump body for sliding sealing, the pump port of the pump body is buckled and fixed with the inner plug, and a raised spring ring is provided on the outer diameter above the inner plug at the buckled and fixed place, and an outer flange is provided on the outer diameter of the hole at the other end of the valve stem extending out of the pump body and the inner plug, and a plastic spring is provided between the outer flange of the valve stem and the spring ring of the inner plug, and the middle outer diameter between the two ends of the plastic spring is convex and wavy, and the two end holes of the plastic spring are respectively limited and fixed to the outer flange of the valve stem and the ring groove of the spring ring of the inner plug, and an air hole is provided at one end and one side of the wavy section of the plastic spring, and the lower hole of the inner diameter of the piston is abutted against the end ring surface of the valve needle for sealing, and the outer side of the upper hole of the inner diameter of the piston is abutted against the inner wall of the hole of the valve stem for sliding sealing.

[0014] The invention has reasonable structural design, is easy to use and carry, has good stability, a firm structure, is easy to replace the vacuum bag, and is easy to produce and assemble as a whole; it is suitable for use as a lock-type vacuum bag lotion bottle, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The cross-sectional structure of the present invention is schematically shown Figure 1 .

[0016] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure.

[0017] Figure 3 yes Figure 2 Schematic diagram of the rear structure.

[0018] Figure 4 The cross-sectional structure of the present invention is schematically shown Figure 2 , the figure shows that the head cap is in the locked state.

[0019] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure in the unlocked state is shown in FIG. 1 , in which part A is framed and the arrow indicates the locking direction of the sliding cover.

[0020] Figure 6 yes Figure 5 Enlarged view of part A.

[0021] Figure 7 yes Figure 2 Schematic diagram of the explosion structure.

[0022] Figure 8 yes Figure 7Schematic diagram of the half-section structure of the outer cover.

[0023] Fig. 9 yes Figure 7 Schematic diagram of the structure on one side of the positioning groove at the head cap.

[0024] Fig.10 yes Figure 7 Schematic diagram of the sliding cover structure viewed from above.

[0025] Fig.11 yes Figure 7 Schematic diagram of the sliding cover structure viewed from above.

[0026] Fig.12 yes Figure 7 Schematic diagram of the structure viewed from above.

[0027] Fig.13 yes Figure 2 Schematic diagram of the structure of the nozzle assembly and the bottle body assembly in the open state, where the arrow indicates the assembly direction.

[0028] Serial number and name of the accompanying drawings: 1. Nozzle, 2. Head cap, 201. Positioning groove, 3. Pump core assembly, 4. Sliding cover, 401. Sliding edge, 402. Sliding hole, 403. Fixing hole, 404. Limiting column, 405. Pump core waist hole, 5. Outer cover, 501. Pressing hole, 502. Outer cover buckle groove, 503. Side buckle groove, 6. Gasket, 7. Large circle, 701. First pump core hole, 702. Buckle groove, 703. Side buckle rib, 704. Limiting plate, 705. Large circle buckle, 706. Large circle buckle hole, 707. Sliding sheet, 8. Pressure cover, 801. Second pump core hole, 802. Pressure cover buckle, 9. Vacuum bag, 901. Flange sleeve, 10. Guide rod, 11. Outer bottle, 12. Dial button. Implementation

[0029] Now, the structure of the present invention is further described in conjunction with the accompanying drawings. Figure 1-Figure 13As shown, the spray head assembly of the portable vacuum bag lotion bottle is snapped together with the bottle body assembly, the nozzle 1 of the spray head assembly extends out of the open slide groove on one side of the outer cover 5, a vacuum bag 9 is arranged in the outer bottle 11 of the bottle body assembly, a pump core assembly 3 is arranged at the bag opening of the vacuum bag, and the valve stem of the pump core assembly is connected to the liquid inlet hole of the head cap 2. The specific structure is as follows: the top of the outer cover of the above-mentioned nozzle assembly is provided with a pressing hole 501, and the head cap is exposed and limited in the pressing hole of the outer cover; the bottom cover opening of the outer cover is provided with a large circle 7 for sealing. At the same time, the top pump opening of the pump core assembly at the pump body is buckled and fixed to the buckle groove 702 in the first pump core hole 701 of the large circle, and the bottom of the pump body of the pump core assembly extends into the bag opening of the vacuum bag through the second pump core hole 801 of the gland 8, and the vacuum bag is fixed to the second pump core hole of the gland through the flange sleeve 901 at the bag opening. The top hole of the flange sleeve of the vacuum bag extending out of the gland is provided with a gasket 6, and the gland seal is fixedly set at the top bottle opening of the outer bottle. The nozzle assembly and the bottle body assembly are buckled together to form a rectangular parallelepiped, and the head cap is set at the pressing hole at the end corner of one side of the top of the outer cover. The pump core assembly, the second pump core hole, and the flange sleeve are respectively correspondingly set on one side of the large circle, the gland, and the vacuum bag. A sliding cover 4 is provided in the inner cavity of the outer cover connected to the cover opening at the bottom of the outer cover with the large circle, and a sliding piece 707 raised on the top of the large circle is inserted into the sliding hole 402 of the sliding cover, and a valve stem of the pump core assembly extends out of the pump core waist-shaped hole 405 on one side of the sliding cover, and the large circle buckles 705 symmetrically arranged on both sides of the outer diameter of the large circle are buckled and fixed to the outer cover buckle grooves 502 symmetrically arranged on both sides of the cover opening at the bottom of the outer cover, and symmetrically arranged limit columns 404 are provided on the outside of the waist-shaped hole of the pump core at the top of the sliding cover, and the limit columns correspond to the cap openings on both sides of the bottom of the head cap respectively, and a dial button 12 is provided on the other side of the sliding cover, and one end of the dial button extends out of the dial button waist-shaped hole on one side of the outer cover. When the dial button drives the sliding cover to move until the limit column of the sliding cover is misaligned with the cap opening at the bottom of the head cap, the head cap is pressed to move downward.

[0030] The other end of the dial button is buckled and fixed to the fixed hole 403 in the step plate raised on the other side of the sliding cover inside the outer cover; the sliding edges 401 are symmetrically arranged on both sides of the outer diameter between the fixing hole in the middle of the sliding cover inside the outer cover and the waist-shaped hole of the pump core, and the limit plates 704 symmetrically arranged on both sides of the top of the large circle below the sliding cover are buckled with the sliding edges on both sides of the sliding cover to move left and right. The large circle buckles symmetrically arranged on both sides of the outer diameter of the large circle are buckled and fixed to the outer cover buckle grooves symmetrically arranged on both sides of the cover opening at the bottom of the outer cover. At the same time, the side buckle ribs 703 symmetrically arranged on the other two sides of the outer diameter of the large circle are buckled and fixed to the side buckle grooves 503 symmetrically arranged on both sides of the cover opening at the bottom of the outer cover. The positioning groove 201 at the bottom cap opening of the head cap above the top of the large circle slide, the large circle slide is inserted into the positioning groove of the head cap through the opening of the limit column on one side of the sliding cover.

[0031] The gland buckles 802 symmetrically arranged on both sides of the gland top are buckled and fixed to the large circle buckle holes 706 symmetrically arranged on both sides of the bottom of the large circle. A guide rod 10 is arranged at the suction pipe hole at the bottom of the pump body at the assembly of the pump core. One end of the guide rod is provided with three ribs arranged at equal angles. One end of the rib is connected to the sleeve at the other end of the guide rod through an opening. An elastic sleeve is provided at the bottom water inlet hole of the pump body of the pump core assembly, and the valve needle above the elastic sleeve is buckled with one end of the valve stem. A piston is provided on the outer diameter of the valve needle at the buckled connection, and the outer diameter of the piston is abutted against the inner wall of the pump body for sliding sealing. The pump port of the pump body is buckled and fixed with the inner plug, and a raised spring ring is provided on the outer diameter above the inner plug at the buckled and fixed place. An outer flange is provided on the outer diameter of the hole at the other end of the valve stem extending out of the pump body and the inner plug, and a plastic spring is provided between the outer flange of the valve stem and the spring ring of the inner plug. The middle outer diameter between the two ends of the plastic spring is raised in a wavy shape, and the two end holes of the plastic spring are respectively limited and fixed to the outer flange of the valve stem and the ring groove of the spring ring of the inner plug. One end and one side of the wavy section of the plastic spring are provided with air holes, the lower hole of the inner diameter of the piston is abutted against the end ring surface of the valve needle for sealing, and the outer side of the upper hole of the inner diameter of the piston is abutted against the inner wall of the hole of the valve stem for sliding sealing.

[0032] The portable vacuum bag lotion bottle is assembled as follows, including nozzle assembly, bottle body assembly and finished product assembly after filling the material body.

[0033] When assembling the nozzle assembly, first press the pump core assembly of the nozzle assembly from the top of the large circle, the buckle position at the connection between the pump port and the inner plug of the pump body of the pump core assembly fits into place through the buckle position with the buckle groove in the first pump core hole of the large circle, and the outer diameter sealing surface of the pump body of the pump core assembly and the sealing rib at the buckle groove of the large circle are interference-sealed; install the gasket from the bottom of the large circle and the pump core assembly and press it into place, the inner diameter of the gasket and the outer diameter of the pump body of the pump core assembly are interference-fitted, and the gasket is attached to the bottom of the circle of the first pump core hole of the large circle; then install the guide rod from the bottom of the large circle and the pump core assembly, the end of the guide rod fits with the buckle position at the bottom of the pump body of the pump core assembly, the sliding cover is pressed in from the top of the large circle, and the sliding edge of the sliding cover is aligned with the limit of the large circle. After the position plates are buckled, they can slide horizontally or vertically, and the sliding hole of the slider is clamped between the sliding pieces of the large circle; at this time, the left and right shifting feel of the sliding cover can be realized. When it is turned to the open state, the head cap is installed from the top of the pump core assembly, and the liquid inlet hole of the head cap is sealed with the valve stem buckle position of the pump core assembly; the outer cover is installed from the top of the head cap, and the outer cover buckle groove of the outer cover is matched with the large circle buckle buckle position of the large circle, and the side buckle groove of the outer cover is matched with the side buckle rib buckle position of the large circle; finally, the nozzle is installed from the side of the head cap, and the nozzle is sealed with the head cap buckle position; the dial button is installed from the side hole of the sliding cover, and the dial button is buckled with the fixed hole of the sliding cover, and the dial button is turned to the closed state, and the assembly of the nozzle assembly is completed.

[0034] When assembling the bottle body, first tilt the vacuum bag, rotate the flange sleeve at the mouth of the vacuum bag along the second pump core hole of the oblique mouth of the gland and put it into place, stick the vacuum bag to the gland, and then put it into the outer bottle. The outer diameter of the gland and the inner diameter of the bottle mouth of the outer bottle are buckled into place, and the assembly of the bottle body is completed.

[0035] Finally, when assembling the finished product, install the nozzle assembly into the bottle body assembly filled with the material, the large circle buckle hole of the large circle matches with the gland buckle position of the gland, and the gasket and the top hole of the flange sleeve of the vacuum bag are interference-sealed to complete the assembly of the finished product.

[0036] The usage and principle of the portable vacuum bag lotion bottle are as follows: the portable vacuum bag lotion bottle has a lock structure. Turn the dial switch to the open state, press the head cap to start the liquid discharge function of the pump core assembly, and the vacuum bag is squeezed and compressed under the action of air pressure, that is, the vacuum bag is deformed and compressed by air pressure to realize the vacuum liquid discharge principle. After use, turn the dial switch to the closed state, and the bottom cap of the head cap will press against the limit column of the sliding cover so that it cannot be pressed down, realizing the locking function.

Claims

1. A lock-type portable vacuum bag lotion bottle, wherein a nozzle assembly of the portable vacuum bag lotion bottle is buckled with a bottle body assembly, a nozzle (1) of the nozzle assembly extends out of an open slide groove or waist-shaped slide hole on a side of an outer cover (5), a vacuum bag (9) is arranged in an outer bottle (11) of the bottle body assembly, a pump core assembly (3) is arranged at the bag opening of the vacuum bag, and a valve stem of the pump core assembly is connected to a liquid inlet hole of a head cap (2); characterized in that The top of the outer cover (5) of the nozzle assembly is provided with a pressing hole (501), and the head cap (2) is exposed and limited in the pressing hole of the outer cover; the bottom cover opening of the outer cover is provided with a large sealing circle (7), and the pump core assembly (3) is buckled and fixed to the buckle groove (702) in the first pump core hole (701) of the large circle, and the pump core assembly extends into the bag opening of the vacuum bag (9) through the second pump core hole (801) of the pressure cover (8), and the vacuum bag is fixed to the second pump core hole of the pressure cover through the flange sleeve (901) at the bag opening, and the pressure cover seal is fixedly arranged on the top bottle opening of the outer bottle (11).

2. The lock-type portable vacuum bag lotion bottle according to claim 1, characterized in that The spray head assembly and the bottle body assembly are buckled together to form a rectangular parallelepiped, the head cap (2) is arranged at a pressing hole (501) at an end corner of one side of the top of the outer cover (5), and the pump core assembly (3), the second pump core hole (801), and the flange sleeve (901) are respectively arranged on one side of the large circle (7), the pressure cover (8), and the vacuum bag (9).

3. The lock-type portable vacuum bag lotion bottle according to claim 2, characterized in that The cover opening at the bottom of the outer cover (5) is connected to the large circle (7) and is provided with a sliding cover (4) in the inner cavity of the outer cover. The sliding piece (707) protruding from the top of the large circle is inserted into the sliding hole (402) of the sliding cover. The valve stem of the pump core assembly (3) extends out of the pump core waist-shaped hole (405) on one side of the sliding cover. The large circle buckles (705) symmetrically arranged on both sides of the outer diameter of the large circle are buckled and fixed to the outer cover buckle grooves (502) symmetrically arranged on both sides of the cover opening at the bottom of the outer cover (5). The outer side of the waist-shaped hole of the pump core at the top of the sliding cover is provided with symmetrically arranged limit columns (404), and the limit columns correspond to the cap openings on both sides of the bottom of the head cap (2). A dial button (12) is provided on the other side of the sliding cover, and one end of the dial button extends out of the dial button waist-shaped hole on one side of the outer cover. When the dial button drives the sliding cover to move until the limit column of the sliding cover is misaligned with the cap opening at the bottom of the head cap, the head cap is pressed and moved downward.

4. The lock-type portable vacuum bag lotion bottle according to claim 3, characterized in that The other end of the dial button (12) is buckled and fixed to a fixing hole (403) in a raised step plate on the other side of the inner sliding cover (4) of the outer cover (5).

5. The lock-type portable vacuum bag lotion bottle according to claim 3, characterized in that Sliding edges (401) are symmetrically arranged on both sides of the middle outer diameter of the sliding cover (4) inside the outer cover (5), and limiting plates (704) symmetrically arranged on both sides of the top of the large circle (7) below the sliding cover are buckled with the sliding edges on both sides of the sliding cover to move left and right.

6. The lock-type portable vacuum bag lotion bottle according to claim 3, characterized in that The large circle buckles (705) symmetrically arranged on both sides of the outer diameter of the large circle (7) are buckled and fixed to the outer cover buckle grooves (502) symmetrically arranged on both sides of the bottom cover opening of the outer cover (5). At the same time, the side buckle ribs (703) symmetrically arranged on the other two sides of the outer diameter of the large circle are buckled and fixed to the side buckle grooves (503) symmetrically arranged on both sides of the bottom cover opening of the outer cover.

7. The lock-type portable vacuum bag lotion bottle according to claim 3, characterized in that The top of the sliding piece (707) of the large circle (7) is located at a positioning groove (201) at the bottom cap opening of the head cap (2), and the sliding piece of the large circle is inserted into the positioning groove of the head cap through an opening of a limiting column (404) on one side of the sliding cover (4).

8. The lock-type portable vacuum bag lotion bottle according to claim 1, characterized in that The pressure cover buckles (802) symmetrically arranged on both sides of the top of the pressure cover (8) are buckled and fixed to the large circle buckle holes (706) symmetrically arranged on both sides of the bottom of the large circle (7).

9. The lock-type portable vacuum bag lotion bottle according to claim 1, characterized in that A guide rod (10) is provided at the suction pipe hole at the bottom of the pump body at the pump core assembly (3), one end of the guide rod is provided with three ribs arranged at equal angles, one end of the rib is communicated with the sleeve at the other end of the guide rod through an opening.

10. The lock-type portable vacuum bag lotion bottle according to claim 1, characterized in that The pump core assembly (3) is provided with an elastic sleeve at the bottom water inlet hole of the pump body, the valve needle above the elastic sleeve is buckled with one end of the valve stem, a piston is provided on the outer diameter of the valve needle at the buckled connection, the outer diameter of the piston is abutted against the inner wall of the pump body for sliding sealing, the pump port of the pump body is buckled and fixed with the inner plug, the outer diameter above the inner plug at the buckled fixed position is provided with a raised spring ring, the outer diameter of the hole at the other end of the valve stem extending out of the pump body and the inner plug is provided with an outer flange, a plastic spring is provided between the outer flange of the valve stem and the spring ring of the inner plug, the middle outer diameter between the two ends of the plastic spring is raised in a wave shape, the two end holes of the plastic spring are respectively limited and fixed to the outer flange of the valve stem and the ring groove of the spring ring of the inner plug, one end and one side of the wave-shaped section of the plastic spring are provided with air holes, the lower hole of the inner diameter of the piston is abutted against the end ring surface of the valve needle for sealing, and the outer side of the upper hole of the inner diameter of the piston is abutted against the inner wall of the hole of the valve stem for sliding sealing.

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