Liquid-filling valve structure of spray bottle

Abstract

A liquid-filling valve structure of a spray bottle, the liquid-filling valve structure comprising a hollow bottle body (100), and a spray head assembly (200) and a tail valve assembly (300) respectively mounted at the upper and lower ends of the bottle body (100), wherein the tail valve assembly (300) comprises a tail cap (310), a piston (320), a limiting washer (330) and an upper sealing ring (340); the upper sealing ring (340) is embedded into a lower inner end of the bottle body (100) and fits with the piston (320) to keep the bottle body (100) in a sealed state; the limiting washer (330) is arranged below the upper sealing ring (340); and the piston (320) is movably arranged inside the tail cap (310), sequentially passes through the limiting washer (330) and the upper sealing ring (340) and extends into the bottle body (100), so that the piston (320) move upwards and fills the bottle body (100) with liquid during liquid filling. By means of assembling the spray bottle in three parts and providing a plurality of sealing structures in the tail valve assembly (300), it can be ensured that internal liquid cannot leak during storage or liquid filling; moreover, a vent hole is provided in the bottle body (100), such that internal air can be promptly exhausted outwards, thereby improving filling efficiency; in addition, the tail valve assembly (300) has a simple structure, thereby achieving the effect of rapid assembly and improving the assembly production efficiency.

Description

Liquid filling valve structure of spray bottle TECHNICAL FIELD

[0001] The utility model relates to spray bottle technical field especially is involved in liquid filling valve structure of spray bottle. BACKGROUND

[0002] At present, most of the perfume bottles on the market are filled with perfume from the top, only a few perfume bottles can be filled with perfume from the bottom, but when filling perfume from the bottom, the perfume bottle needs to have good sealing performance to ensure that the perfume does not leak during and after filling, and the internal air can be discharged in time during filling to ensure smooth filling of the perfume.

[0003] However, the existing liquid filling spray bottle has a complex internal liquid filling structure, the production and assembly process is very cumbersome, resulting in low assembly efficiency, thus low production efficiency of the product, and the lower end of the bottle body is prone to liquid leakage, affecting the user's experience.

[0004] Therefore, it is necessary to research a new technical solution to solve the above problems. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model mainly aims at the defects of the prior art, and provides a liquid filling valve structure of a spray bottle.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A liquid filling valve structure of a spray bottle, comprising a hollow bottle body, a spray head assembly and a tail valve assembly installed on the upper and lower ends of the bottle body, and a vent hole in the lower end of the bottle body, a vent pipe inserted into the vent hole and extending upward to the upper end of the bottle body, the tail valve assembly comprising a tail cover, a piston, a limiting intermediate and an upper sealing ring, the upper sealing ring being embedded and installed on the lower inner end of the bottle body and cooperating with the piston to form a sealed state of the bottle body, the limiting intermediate being arranged below the upper sealing ring, the piston being movably arranged in the interior of the tail cover and extending into the bottle body through the limiting intermediate and the upper sealing ring in sequence, so that the piston moves upward and injects liquid into the bottle body during liquid filling.

[0008] As a preferred, the piston and the tail cover are further provided with a liquid filling sealing ring, the liquid filling sealing ring is a tapered structure with a large upper end and a small lower end, the upper end surface of the liquid filling sealing ring is attached to the lower end surface of the piston, the lower end tapered surface of the liquid filling sealing ring is in contact with the inner lower end tapered surface of the tail cover and forms a sealed state, and the lower end tapered surface of the liquid filling sealing ring is provided with an annular convex rib for enhancing the sealing effect of the inner lower end tapered surface of the tail cover.

[0009] As a kind of preferred, the liquid-filled seal ring and piston are made using integrated molding processing technology, the lower end of the liquid-filled seal ring is provided with injection slot extending along its longitudinal direction, the injection slot extends into the piston, the tail end of the injection slot is provided with transverse liquid inlet groove extending to both sides and penetrating out of the piston, so as to fill liquid through the injection slot, and then the liquid flows into the bottle body through the transverse liquid inlet groove at both ends.

[0010] As a kind of preferred, the piston is provided with positioning wing protruding outward, and the positioning wing is distributed on the lower outer surface of the piston.

[0011] As a kind of preferred, the piston is further provided with reset spring, the reset spring is sleeved on the piston, the lower end of the reset spring abuts against the positioning wing of the piston, and the upper end of the reset spring abuts against the inner end face of the limiting intercalator, the reset spring always has downward lifting force, so that the piston can return to the original state after liquid filling to prevent leakage.

[0012] As a kind of preferred, the inner end of the limiting intercalator is arranged in a stepped manner from bottom to top, the inner end face of the limiting intercalator in a stepped manner is further provided with protruding limiting convex rib, the limiting convex rib gradually extends outward from bottom to top, the upper end of the reset spring abuts against the limiting convex rib of the inner end of the limiting intercalator, and the limiting intercalator is further provided with through hole for the piston to pass through.

[0013] As a kind of preferred, the limiting intercalator and the upper seal ring are further provided with protruding shoulder, the shoulder is arranged in an annular array between the limiting intercalator and the upper seal ring and forms exhaust groove between the limiting intercalator and the upper seal ring.

[0014] As a kind of preferred, the shoulder is arranged in an annular array on the upper end face of the limiting intercalator, the shoulder and the limiting intercalator are made using integrated molding technology, and the upper seal ring is in a tapered structure gradually shrinking inward from large at the lower end to small at the upper end.

[0015] As a kind of preferred, the shoulder is arranged in an annular array on the lower end of the upper seal ring and extends outward, the shoulder and the upper seal ring are made using integrated molding technology, and the side end of the upper seal ring forms gap with the lower inner end face of the bottle body for air to flow out.

[0016] As a kind of preferred, the shoulder is arranged in an annular array on the upper end face of the limiting intercalator, the shoulder and the limiting intercalator are made using integrated molding technology, and the lower outer end of the upper seal ring is provided with wave-shaped annular structure and forms gap with the lower inner end face of the bottle body for air in the bottle body to flow out.

[0017] The utility model discloses compared with prior art has obvious advantage and beneficial effect, specifically speaking, from the above technical scheme can know:

[0018] The utility model discloses convenient and fast, through the spray bottle is divided into three parts and is assembled together, and a plurality of sealing structures are arranged in tail valve subassembly of tail portion, can effectively guarantee when storing or filling liquid, the liquid in the inside will not appear seepage, and is provided with exhaust hole in the bottle body, can in time export the internal air, promotes filling efficiency, and tail valve subassembly simple structure can play the effect of quick assembly, promotes the assembly production efficiency, reduces the production cost of enterprise. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Fig. 1 is a first embodiment of the utility model whole structure schematic diagram.

[0021] Fig. 2 is the first embodiment of the utility model of exploded structure schematic diagram.

[0022] Fig. 3 is the tail valve subassembly structure schematic diagram of the first embodiment of the utility model.

[0023] Fig. 4 is the first embodiment of the utility model whole section structure schematic diagram.

[0024] Fig. 5 is the second embodiment of the utility model whole structure schematic diagram.

[0025] Fig. 6 is the second embodiment of the utility model of exploded structure schematic diagram.

[0026] Fig. 7 is the tail valve subassembly structure schematic diagram of the second embodiment of the utility model.

[0027] Fig. 8 is the second embodiment of the utility model whole section structure schematic diagram.

[0028] Fig. 9 is the third embodiment of the utility model whole structure schematic diagram.

[0029] Fig. 10 is the third embodiment of the utility model of exploded structure schematic diagram.

[0030] Fig. 11 is the tail valve subassembly structure schematic diagram of the third embodiment of the utility model.

[0031] Fig. 12 is the third embodiment of the utility model whole section structure schematic diagram.

[0032] Wherein, the figure each sign: 100, bottle body;110, exhaust hole;120, exhaust pipe;200, spray head assembly;300, tail valve assembly;310, tail cover;320, piston;321, positioning wing;330, limit mediator;331, through hole;340, upper sealing ring;350, liquid filling sealing ring;360, liquid injection groove;370, transverse liquid inlet groove;380, reset spring;390, shoulder. DETAILED DESCRIPTION

[0033] In order to make the technical problems to be solved by the present application, the technical solutions and advantages clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0037] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples.

[0038] Referring to Figs. 1-4, the embodiment 1 is a liquid filling valve structure of a spray bottle, which comprises a hollow bottle body 100 and a spray head assembly 200 and a tail valve assembly 300 installed on the upper and lower ends of the bottle body 100, so that the spray head assembly 200 and the tail valve assembly 300 are detachably installed on the bottle body 100, and the spray head assembly 200 has a spray pump and a suction pipe connected with the spray pump and extending into the bottle body 100 to suck liquid, and a vent hole 110 is arranged at the lower end of the bottle body 100, a vent pipe 120 is inserted into the vent hole 110 and extends upward to the upper end of the bottle body 100 to suck air at the upper end, so that the user can quickly fill the perfume liquid, wherein the tail valve assembly 300 comprises a tail cover 310, a piston 320, a limiting intermediate 330 and an upper sealing ring 340, the upper sealing ring 340 is embedded and installed at the lower inner end of the bottle body 100, so that the bottle body 100 forms a closed state to prevent liquid leakage, then the limiting intermediate 330 is arranged below the upper sealing ring 340, and the piston 320 is movably arranged at the inner end of the tail cover 310 and extends into the bottle body 100 through the limiting intermediate 330 and the upper sealing ring 340 in sequence, so that the user can fill the liquid into the bottle body 100 by moving the piston 320 upward.

[0039] In the embodiment, a liquid filling sealing ring 350 is arranged between the piston 320 and the tail cover 310, and the liquid filling sealing ring 350 has a tapered structure with a large upper end and a small lower end, so that the upper end surface of the liquid filling sealing ring 350 is attached to the lower end surface of the piston 320, the lower end tapered surface of the liquid filling sealing ring 350 is in contact with the inner lower end tapered surface of the tail cover 310 and forms a sealed state, so that the liquid filling sealing ring 350 is always in contact with the inner lower end tapered surface of the tail cover 310 to form a closed state in a normal state, so as to prevent liquid / air leakage, and an annular convex rib is arranged on the lower end tapered surface of the liquid filling sealing ring 350 to enhance the sealing effect with the inner lower end tapered surface of the tail cover 310.

[0040] Specifically, the liquid filling sealing ring 350 and the piston 320 are made by integral molding technology, a liquid injection groove 360 extending in the longitudinal direction is arranged at the lower end center of the liquid filling sealing ring 350, the liquid injection groove 360 extends into the piston 320, and a transverse liquid inlet groove 370 extending to both sides and penetrating out of the piston 320 is arranged at the tail end of the liquid injection groove 360, so that the user fills the liquid into the bottle body 100 through the liquid injection groove 360, the liquid flows into the bottle body 100 from the liquid injection groove 360 and then flows into the bottle body 100 through the transverse liquid inlet groove 370 at both sides, so as to realize the filling effect.

[0041] Further, in the normal un-filling state, the lateral liquid inlet grooves 370 on both sides of the piston 320 abut against the inner side wall of the upper sealing ring 340, forming a closed state; when it is necessary to fill the perfume liquid, the piston 320 is lifted upward, so that the lateral liquid inlet grooves 370 on both sides are away from the upper sealing ring 340 and exposed to the bottle body 100, so that the perfume liquid can be filled into the bottle body 100 for storage.

[0042] In the embodiment, the positioning wing 321 protruding outward is further arranged on the piston 320, and the positioning wing 321 is arranged at intervals on the lower outer surface of the piston 320.

[0043] Specifically, the reset spring 380 is further arranged on the piston 320, the reset spring 380 is sleeved on the piston 320, the lower end of the reset spring 380 abuts against the positioning wing 321 of the piston 320, and the upper end of the reset spring 380 abuts against the inner end face of the limiting intermediate piece 330. The reset spring 380 always has a downward lifting force, so that the piston 320 can be restored to the original position by the reset spring 380 after the filling liquid is lifted upward, the liquid filling sealing ring 350 on the piston 320 can abut against the inner lower end face of the tail cover 310 in time, the internal liquid is prevented from leaking, and the user is prevented from being inconvenient to use.

[0044] Further, the inner end of the limiting intermediate piece 330 is arranged in a stepped shape from bottom to top, and the limiting convex ribs protruding outward are further arranged on the inner end face of the limiting intermediate piece 330 in a stepped shape, so that the upper end of the reset spring 380 can abut against the limiting convex ribs on the inner end of the limiting intermediate piece 330. The through hole 331 for the piston 320 to pass through is further arranged on the limiting intermediate piece 330, so that the piston 320 can pass through the center of the limiting intermediate piece 330 and extend into the bottle body 100.

[0045] In the embodiment, the protruding shoulder 390 is further arranged between the limiting intermediate piece 330 and the upper sealing ring 340, the shoulder 390 is arranged in an annular array between the limiting intermediate piece 330 and the upper sealing ring 340, and an exhaust groove is formed therebetween, so that the air discharged downward through the exhaust hole 110 can continue to be discharged downward from the exhaust groove, thereby discharging the air out of the bottle body 100.

[0046] Specifically, the shoulder 390 is arranged in an annular array on the upper end face of the limiting intermediate piece 330, the shoulder 390 and the limiting intermediate piece 330 are processed by an integral molding technology, and the limiting intermediate piece 330 and the upper sealing ring 340 above have the exhaust groove for the air to flow downward.

[0047] Further, the upper sealing ring 340 is in a tapered structure of gradually shrinking inward from large at the lower end to small at the upper end, and also has a wavy circular arc structure arranged in an annular array on the lower end face of the bottle body 100, so that it can abut against the outer end of the upper sealing ring 340, so that there is a gap between the upper sealing ring 340 and the wavy circular arc structure of the lower end of the bottle body 100 for air flow.

[0048] Referring to FIGS. 5-8, the embodiment 2 is a liquid filling valve structure of a spray bottle, which comprises a hollow bottle body 100 and a spray head assembly 200 and a tail valve assembly 300 mounted on the upper and lower ends of the bottle body 100, so that the spray head assembly 200 and the tail valve assembly 300 are both detachably mounted on the bottle body 100, and the spray head assembly 200 has a spray pump and a suction pipe connected thereto and extending into the bottle body 100 to suck liquid, and also has an air vent hole 110 arranged at the lower end of the bottle body 100, an air vent pipe 120 inserted into the air vent hole 110 and extending upward to the upper end of the bottle body 100 to suck air at the upper end, so that the user can quickly fill the perfume liquid, wherein the tail valve assembly 300 comprises a tail cover 310, a piston 320, a limiting intermediate 330 and an upper sealing ring 340, the upper sealing ring 340 is embedded and mounted to the lower inner end of the bottle body 100, so that the bottle body 100 forms a closed state to prevent liquid leakage, then the limiting intermediate 330 is arranged below the upper sealing ring 340, and the piston 320 is movably arranged at the inner end of the tail cover 310 and extends into the bottle body 100 through the limiting intermediate 330 and the upper sealing ring 340 in sequence, so that the user can fill the liquid into the bottle body 100 by moving the piston 320 upward.

[0049] In this embodiment, a liquid filling sealing ring 350 is further arranged between the piston 320 and the tail cover 310, and the liquid filling sealing ring 350 is in a tapered structure of large at the upper end and small at the lower end, so that the upper end face of the liquid filling sealing ring 350 abuts against the lower end face of the piston 320, and the lower end tapered face of the liquid filling sealing ring 350 contacts and forms a sealed state with the inner lower end tapered face of the tail cover 310, so that the liquid filling sealing ring 350 always abuts against the inner lower end tapered face of the tail cover 310 to form a closed state in normal state, so as to prevent liquid / air leakage, and the inner lower end tapered face of the liquid filling sealing ring 350 is further provided with an annular convex rib for enhancing the sealing effect with the inner lower end tapered face of the tail cover 310.

[0050] Specifically, the liquid filling sealing ring 350 and the piston 320 are made by integral molding technology, and the liquid filling groove 360 extending in the longitudinal direction is arranged at the lower end center of the liquid filling sealing ring 350, and the liquid filling groove 360 extends into the piston 320, and the transverse liquid inlet groove 370 extending to both sides and penetrating out of the piston 320 is arranged at the tail end of the liquid filling groove 360, so that the user fills the liquid into the bottle body 100 through the liquid filling groove 360, so that the liquid flows inward from the liquid filling groove 360, and then the liquid flows into the bottle body 100 through the transverse liquid inlet groove 370 at both ends, thereby realizing the filling effect.

[0051] Further, in the normal unfilled state of the piston 320, the transverse liquid inlet groove 370 at both ends abuts against the inner side wall of the upper sealing ring 340 to form a closed state; when it is necessary to fill the perfume liquid, the piston 320 is lifted upward, so that the transverse liquid inlet groove 370 at both sides is away from the upper sealing ring 340 and exposed to the inside of the bottle body 100, so that the perfume liquid can be filled into the bottle body 100 for storage.

[0052] In the present embodiment, the positioning wing 321 protruding outward is further arranged on the piston 320, and the positioning wing 321 is distributed on the lower outer surface of the piston 320.

[0053] Specifically, the reset spring 380 is further arranged on the piston 320, the reset spring 380 is sleeved on the piston 320, and the lower end of the reset spring 380 abuts against the positioning wing 321 of the piston 320, and the upper end of the reset spring 380 abuts against the inner end face of the limiting intermediate piece 330, and the reset spring 380 always has a downward lifting force, so that after the piston 320 is lifted upward after filling the liquid, the piston 320 can be restored to the original position by the reset spring 380, so that the liquid filling sealing ring 350 on the piston 320 can be in time abutted against the inner lower end face of the tail cover 310, preventing the liquid inside from leaking and avoiding the inconvenience to the user.

[0054] Further, the inner end of the limiting intermediate piece 330 is arranged in a stepped shape from bottom to top, and the limiting convex rib is further arranged on the inner end face of the limiting intermediate piece 330 in a stepped shape, and the limiting convex rib gradually extends outward from bottom to top, so that the upper end of the reset spring 380 can abut against the limiting convex rib on the inner end of the limiting intermediate piece 330, and the through hole 331 for the piston 320 to pass through is further arranged on the limiting intermediate piece 330, so that the piston 320 can pass through the center of the limiting intermediate piece 330 and extend into the bottle body 100.

[0055] In the embodiment, a protruding shoulder 390 is arranged between the limiting intermediate member 330 and the upper sealing ring 340, and the shoulder 390 is arranged in an annular array between the limiting intermediate member 330 and the upper sealing ring 340, and forms an exhaust groove between the limiting intermediate member 330 and the upper sealing ring 340, so that the air discharged downward through the exhaust hole 110 can continue to be discharged downward from the exhaust groove, thereby discharging the air in the bottle body 100.

[0056] Specifically, the shoulder 390 is arranged in an annular array at the lower end of the upper sealing ring 340 and extends outward to the outer end of the upper sealing ring 340, wherein the shoulder 390 is integrally formed with the upper sealing ring 340, and when assembled, the lower end and the side end of the upper sealing ring 340 are respectively formed with gaps with the limiting intermediate member 330 and the lower inner end surface of the bottle body 100 for air outflow, so that the air in the bottle body 100 can be discharged outward in time.

[0057] Referring to FIGS. 9-12, embodiment 3: a liquid filling valve structure of a spray bottle, comprising a hollow bottle body 100 and a nozzle assembly 200 and a tail valve assembly 300 installed on the upper and lower ends of the bottle body 100, so that the nozzle assembly 200 and the tail valve assembly 300 are both detachably installed on the bottle body 100, and the nozzle assembly 200 has a spray pump and a suction pipe connected with the spray pump and extending into the bottle body 100 to suck liquid, and a exhaust hole 110 is further arranged at the lower end of the bottle body 100, an exhaust pipe 120 is inserted into the exhaust hole 110 and extends upward to the upper end of the bottle body 100 to suck air at the upper end, so that the user can quickly fill the perfume liquid, wherein the tail valve assembly 300 comprises a tail cover 310, a piston 320, a limiting intermediate member 330 and an upper sealing ring 340, the upper sealing ring 340 is embedded and installed at the lower inner end of the bottle body 100, so that the bottle body 100 forms a sealed state to prevent liquid leakage, then the limiting intermediate member 330 is arranged below the upper sealing ring 340, and the piston 320 is movably arranged at the inner end of the tail cover 310 and extends into the bottle body 100 through the limiting intermediate member 330 and the upper sealing ring 340, so that the user can fill liquid into the bottle body 100 by moving the piston 320 upward.

[0058] In the embodiment, a liquid filling sealing ring 350 is further arranged between the piston 320 and the tail cover 310, and the liquid filling sealing ring 350 has a tapered structure with a large upper end and a small lower end, so that the upper end surface of the liquid filling sealing ring 350 abuts against the lower end surface of the piston 320, and the lower tapered surface of the liquid filling sealing ring 350 contacts the inner lower tapered surface of the tail cover 310 and forms a sealed state, so that the liquid filling sealing ring 350 always abuts against the inner lower tapered surface of the tail cover 310 to form a sealed state in a normal state, thereby preventing liquid / air leakage, and an annular convex rib is further arranged on the lower tapered surface of the liquid filling sealing ring 350 to enhance the sealing effect with the inner lower tapered surface of the tail cover 310.

[0059] Specifically, the liquid filling sealing ring 350 used and the piston 320 are made by integral molding processing technology, and the liquid filling groove 360 extending along the longitudinal direction of the liquid filling sealing ring 350 is arranged at the lower end center of the liquid filling sealing ring 350, and the liquid filling groove 360 extends into the piston 320, and the transverse liquid inlet groove 370 extending to both sides and penetrating out of the piston 320 is arranged at the tail end of the liquid filling groove 360, so that the user fills the liquid into the bottle body 100 through the liquid filling groove 360, so that the liquid flows inward from the liquid filling groove 360, and then the liquid flows into the bottle body 100 through the transverse liquid inlet groove 370 at both ends, thereby realizing the filling effect.

[0060] Further, in the normal unfilled state of the piston 320, the transverse liquid inlet groove 370 at both ends abuts against the inner side wall of the upper sealing ring 340 to form a closed state; when it is necessary to fill the perfume liquid, the piston 320 is lifted upward, so that the transverse liquid inlet groove 370 at both sides is away from the upper sealing ring 340 and exposed to the inside of the bottle body 100, so that the perfume liquid can be filled into the bottle body 100 for storage.

[0061] In the embodiment, the positioning wing 321 protruding outward is also arranged on the piston 320, and the positioning wing 321 is distributed on the lower outer surface of the piston 320 in a spaced manner.

[0062] Specifically, the reset spring 380 is also arranged on the piston 320, the reset spring 380 is sleeved on the piston 320, and the lower end of the reset spring 380 abuts against the positioning wing 321 of the piston 320, and the upper end of the reset spring 380 abuts against the inner end face of the limiting spacer 330, and the reset spring 380 always has a downward lifting force, so that after the piston 320 is lifted upward after filling the liquid, the piston 320 can be restored to the original position by the reset spring 380, so that the liquid filling sealing ring 350 on the piston 320 can be in time abutted against the inner lower end face of the tail cover 310, preventing the liquid inside from leaking and avoiding the inconvenience to the user.

[0063] Further, the inner end of the limiting spacer 330 is arranged in a stepped manner from bottom to top, and the limiting protruding ribs are arranged on the inner end face of the limiting spacer 330 in a stepped manner, and the limiting protruding ribs gradually extend outward from bottom to top, so that the upper end of the reset spring 380 can abut against the limiting protruding ribs on the inner end of the limiting spacer 330, and the through hole 331 for the piston 320 to pass through is also arranged on the limiting spacer 330, so that the piston 320 can pass through the center of the limiting spacer 330 and extend into the bottle body 100.

[0064] In the embodiment, the convex shoulder 390 is arranged annularly between the limiting intermediate member 330 and the upper sealing ring 340, and the convex shoulder 390 is formed integrally with the limiting intermediate member 330, and the upper sealing ring 340 is provided with a wavy annular structure at the lower outer end, and a gap is formed between the upper sealing ring 340 and the lower inner end of the bottle body 100, so that the air in the bottle body 100 can flow outwards.

[0065] Specifically, the convex shoulder 390 is arranged annularly on the upper end face of the limiting intermediate member 330, and the convex shoulder 390 is formed integrally with the limiting intermediate member 330, and the upper sealing ring 340 is provided with a wavy annular structure at the lower outer end, and a gap is formed between the upper sealing ring 340 and the lower inner end of the bottle body 100, so that the air in the bottle body 100 can flow outwards.

[0066] The above is only a preferred embodiment of the present application, and only the technical principle of the present application is described in detail, and these descriptions are only for explaining the principle of the present application, and cannot be explained as the limitation of the protection scope of the present application in any way. Based on the explanation herein, any modification, equivalent replacement and improvement within the spirit and principle of the present application, and other specific embodiments of the present application which can be thought by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A liquid filling valve structure of a spray bottle, comprising a bottle body in a hollow shape, a spray head assembly and a tail valve assembly installed on the upper and lower ends of the bottle body, and a gas exhaust hole in the bottle body at the lower end, wherein an exhaust pipe is inserted into the gas exhaust hole and extends upward to the upper end of the bottle body, characterized in that: The tail valve assembly comprises a tail cover, a piston, a limiting mediator and an upper sealing ring, the upper sealing ring is embedded and installed at the lower inner end of the bottle body and cooperates with the piston to make the bottle body form a closed state, the limiting mediator is arranged below the upper sealing ring, the piston is movably arranged in the interior of the tail cover and sequentially penetrates the limiting mediator and the upper sealing ring to extend into the bottle body, so that the piston moves upward when being filled with liquid and injects liquid into the bottle body. ​ 2. The fill valve structure for a spray bottle according to claim 1, characterized by: The liquid filling sealing ring is further arranged between the piston and the tail cover, the liquid filling sealing ring is in a taper structure with a large upper end and a small lower end, the upper end surface of the liquid filling sealing ring is attached to the lower end surface of the piston, the lower end taper surface of the liquid filling sealing ring is in contact with the inner lower end taper surface of the tail cover and forms a sealed state, and the lower end taper surface of the liquid filling sealing ring is provided with an annular convex rib for enhancing the sealing effect with the inner lower end taper surface of the tail cover.

3. The liquid fill valve construction for a spray bottle of claim 2 wherein: The liquid filling sealing ring and the piston are made by integral molding technology, the lower end center of the liquid filling sealing ring is provided with a liquid injection groove extending along the longitudinal direction thereof, the liquid injection groove extends into the piston, and the tail end of the liquid injection groove is provided with a transverse liquid inlet groove extending to both sides and penetrating out of the piston, so that the liquid is filled through the liquid injection groove and then flows into the bottle body through the transverse liquid inlet groove at both sides.

4. The fill valve structure for a spray bottle according to claim 1, wherein: The piston is provided with a positioning wing protruding outward, and the positioning wing is distributed on the lower outer surface of the piston.

5. The fill valve construction for a spray bottle of claim 4 wherein: The piston is further provided with a reset spring, the reset spring is sleeved on the piston, the lower end of the reset spring abuts against the positioning wing of the piston, and the upper end of the reset spring abuts against the inner end surface of the limiting mediator, the reset spring always has a downward lifting force to enable the piston to return to the original state after being filled with liquid to prevent leakage.

6. The fill valve construction for a spray bottle of claim 5 wherein: The inner end of the limiting mediator is arranged in a stepped manner from bottom to top, the inner end surface of the limiting mediator in a stepped manner is further provided with a convex limiting rib, the limiting rib gradually extends outward from bottom to top, the upper end of the reset spring abuts against the limiting rib of the inner end of the limiting mediator, and the limiting mediator is further provided with a through hole for the piston to penetrate.

7. The liquid fill valve construction for a spray bottle of claim 1 wherein: The limiting mediator and the upper sealing ring are further provided with a convex shoulder, the convex shoulder is arranged in an annular array between the limiting mediator and the upper sealing ring and forms an exhaust groove therebetween.

8. The liquid fill valve construction for a spray bottle of claim 7 wherein: The convex shoulder is arranged in an annular array on the upper end surface of the limiting mediator, the convex shoulder and the limiting mediator are made by integral molding technology, and the upper sealing ring is in a taper structure with a large lower end and a small upper end gradually shrinking inward.

9. The liquid fill valve construction for a spray bottle of claim 7 wherein: The convex shoulder is arranged in an annular array on the lower end of the upper sealing ring and extends outward, the convex shoulder and the upper sealing ring are made by integral molding technology, and the side end of the upper sealing ring forms a gap with the lower inner end surface of the bottle body for air to flow out.

10. The liquid fill valve construction for a spray bottle of claim 7 wherein: The convex shoulder is arranged in an annular array on the upper end surface of the limiting mediator, the convex shoulder and the limiting mediator are made by integral molding technology, and the lower outer end of the upper sealing ring is provided with a wave-shaped annular structure and forms a gap with the lower inner end surface of the bottle body for air in the bottle body to flow out.

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