duster bottle

Abstract

The utility model discloses a kind of powder spraying bottles, including outer bottle, head cap part, powder bottle, first reset element, powder column, elastic sealing part, first, second and third one-way valve, powder bottle is movably installed in the bottle cavity of outer bottle, bottom air cavity is formed between the two, head cap part is movably installed in powder bottle, top air cavity is formed between the two, two ends of first reset element abut on outer bottle and powder bottle, the top of powder column is installed in the top of powder bottle and the top of powder column hole is communicated with the powder outlet hole of powder bottle, first bottom air inlet hole of powder bottle is adjacent to bottom, two ends of elastic sealing part are connected with head cap part and powder bottle and the top and bottom of pipe hole are communicated head cap passageway of head cap and the powder outlet hole of powder bottle respectively, first one-way valve makes the air in top air cavity enter powder cavity through the top air inlet hole of powder bottle, second one-way valve makes the air in bottom air cavity enter powder cavity through the first bottom air inlet hole of powder bottle, third one-way valve makes external air enter bottom air cavity through the second bottom air inlet hole of powder bottle.

Description

Technical Field

[0001] This utility model relates to a container for spraying dry powder, and more particularly to a powder spraying bottle. Background Technology

[0002] In Chinese invention patent application CN114104257A, the inventor disclosed a dry powder spray bottle, which includes a bottle body, an upper cap, a cap with a spray nozzle, and a bottom cap. The bottle body includes an outer bottle and an inner bottle, with the inner bottle disposed inside the outer bottle. The upper end of the inner bottle is connected to the outer bottle via a shoulder sleeve. A piston and a large one-way air inlet valve are sequentially arranged between the lower end of the inner bottle and the inner wall of the outer bottle. Above the piston, the cavity of the inner bottle forms a powder storage chamber. The lower end of the large one-way air inlet valve is connected to the inner wall of the outer bottle. An airbag structure is formed between the inner bottle and the bottom of the outer bottle. A rotating powder-stirring mechanism is provided between the lower end of the inner bottle and the bottom of the outer bottle. The rotating powder-stirring mechanism includes a powder-stirring mechanism and a rotating mechanism. The upper end of the powder-stirring mechanism is sealed through a large one-way air inlet valve, and a piston is set in the inner bottle. A small one-way valve is provided inside the powder-stirring mechanism. When the cap is pressed, the small one-way valve opens, and the gas in the airbag structure is delivered to the inner bottle through the small one-way valve and sprayed out from the cap along with the dry powder. A sealing mechanism is provided between the cap and the inner bottle to close the powder outlet channel. The sealing mechanism is preferably a rotating sealing mechanism, which includes a switch located at the upper opening of the inner bottle. A through hole is opened in the middle of the switch, and a delivery pipe is connected to the lower end of the switch. A switch seat is provided at the upper end of the switch, and a powder outlet is opened at the upper end of the switch seat. The cap is rotatably mounted on the switch. A plug is protruding on the inner wall of the lower end of the cap to close the powder outlet. When the cap is rotated to the correct position, the plug seals the powder outlet. A three-dimensional rotating arrow is provided on the outside of the cap to indicate whether it is closed or open. The lower end of the switch has a cylindrical socket formed around the through hole for the upper end of the conveying pipe to be inserted. The switch has a circular outer edge that abuts against the upper end of the inner bottle. The upper end of the switch has an annular groove for the lower end of the cap to be inserted and rotated. The inner wall of the annular groove has an annular rib. The lower end of the cap has a cylindrical structure that mates with the annular groove. The inner wall of the cylindrical structure has an annular rib that mates with the annular rib. The conveying pipe is a straight pipe. The lower end of the conveying pipe is equipped with a control cover to control the amount of powder dispensed. The upper end of the control cover is sleeved and fixed to the lower end of the conveying pipe. The lower end of the control cover has a flared opening. The powder stirring mechanism includes a hollow cylinder. Several powder stirring blocks are provided outward from the upper end of the cylinder. A V-shaped rotating block is protruding from one side of the lower end of the cylinder. The rotating mechanism includes a rotating outer cylinder and a rotating inner cylinder. The height of the rotating outer cylinder is greater than that of the rotating inner cylinder. The inner wall of the rotating outer cylinder and the inner wall of the rotating inner cylinder have rotating teeth that mate with the rotating block to rotate the powder stirring mechanism.

[0003] The specific operation process of the existing dry powder spray bottle is as follows: 1. In the initial state, the blockage at the lower end of the cap abuts against the powder outlet of the switch seat, isolating the dry powder in the inner bottle from the outside world, preventing it from getting damp, and keeping it dry at all times; 2. Remove the top cover and rotate the cap to open the powder outlet of the switch seat, creating a passage between the dry powder and the outside world, allowing for smooth powder discharge; 3. Press down the cap, the inner bottle moves down, the small one-way valve opens, as shown in the figure, the airbag structure continuously shrinks, the airflow passes through the small one-way valve, carrying the dry powder through the delivery pipe and spraying it out of the cap outlet. At the same time, the powder stirring mechanism rotates 90° to stir the dry powder; 4. Loosen the cap, under the action of the spring, the inner bottle and cap move upward, the small one-way valve closes to prevent dry powder from being sucked into the airbag, while the large one-way air inlet valve opens, allowing air to enter the airbag. During the process of loosening the cap, the powder stirring mechanism rotates again to prepare for the next powder spraying; 5. After use, rotate the cap to close the powder outlet to prevent the dry powder from getting damp.

[0004] The existing dry powder spray bottles have the following drawbacks: First, because the powder storage chamber cannot be compressed and the air bladder structure continuously shrinks when the cap is pressed, the high-pressure gas inside the air bladder structure causes turbulence in the powder storage chamber after entering, resulting in uneven distribution of dry powder into the delivery pipe and consequently uneven powder dispensing from the spray bottle. Second, the upper end of the stirring mechanism of the rotary stirring mechanism is sealed through a large one-way air inlet valve, and the lower end is drivably connected to the rotating mechanism. Since the stirring mechanism needs to pass through the large one-way air inlet valve, the existing dry powder spray bottles need to consider how to achieve a seal between the stirring mechanism and the large one-way air inlet valve to prevent the dry powder stored in the powder storage chamber from leaking into the air chamber structure. Third, before spraying, the cap needs to be rotated to open the powder outlet of the switch base, and after spraying, the cap needs to be rotated to close the powder outlet of the switch base. The operation process is cumbersome, especially if the user forgets to rotate the cap to close the powder outlet of the switch base after spraying, which can easily lead to the dry powder becoming damp. Utility Model Content

[0005] One objective of this invention is to provide a powder spraying bottle, wherein when the cap of the powder spraying bottle is pressed, air in the top air chamber enters the powder chamber unidirectionally through the top air inlet of the powder bottle, creating a high-pressure environment in the powder chamber. Subsequently, air in the bottom air chamber enters the powder chamber unidirectionally through the first bottom air inlet of the powder bottle, and the bottom of the powder column hole is located adjacent to the first bottom air inlet. Therefore, the air in the bottom air chamber directly enters the powder column hole of the powder column after entering the powder chamber through the first bottom air inlet, without forming turbulence in the powder chamber of the powder bottle, thereby facilitating uniform powder dispensing.

[0006] One objective of this invention is to provide a powder spraying bottle, wherein the stirring part of the powder spraying bottle is entirely located in the powder chamber of the powder bottle. Therefore, the powder spraying bottle of this invention does not need to consider the sealing problem of the stirring part and the powder bottle, and there is no risk of dry powder leaking into the bottom air chamber.

[0007] One objective of this invention is to provide a powder spray bottle in which, when the cap is pressed, the top of the valve stem automatically opens the top opening of the inner cap hole of the inner cap of the cap; and after the cap is released, the top of the valve stem automatically closes the top opening of the inner cap hole of the inner cap. Compared with existing dry powder spray bottles, the powder spray bottle of this invention does not require separate operation of the cap to open and close the top opening of the inner cap hole of the inner cap. Therefore, the operation of the powder spray bottle of this invention is more convenient, and when the cap is not pressed, the top opening of the inner cap hole of the inner cap can be ensured to be closed by the top of the valve stem.

[0008] According to one aspect of the present invention, a powder spray bottle is provided, comprising: The outer bottle has a cavity; The headgear section has a headgear passage; A powder bottle has a powder cavity, a powder outlet, a top air inlet, a first bottom air inlet, and a second bottom air inlet. The powder bottle is movably mounted in the bottle cavity of the outer bottle. A cap is movably mounted on the top of the powder bottle. The powder spraying bottle forms a top air cavity between the cap and the powder bottle, and a bottom air cavity between the bottom of the powder bottle and the bottom of the outer bottle. A first reset element is located in the bottom air cavity, and the opposite ends of the first reset element abut against the bottom of the powder bottle and the bottom of the outer bottle, respectively. A powder column having a powder column hole, the powder column being located in the powder chamber of the powder bottle, the top of the powder column being mounted on the top of the powder bottle, the top of the powder column hole being connected to the powder outlet of the powder bottle, and the bottom of the powder column hole being adjacent to the first bottom air inlet. An elastic sealing part has a tube hole, and the opposite ends of the elastic sealing part are respectively connected to the cap and the powder bottle. The top of the tube hole of the elastic sealing part is connected to the cap channel of the cap, and the bottom is connected to the powder outlet of the powder bottle. A first one-way valve, which is installed on the top of the powder bottle, is configured to allow air in the top air chamber to enter the powder chamber unidirectionally through the top air inlet of the powder bottle; A second one-way valve is installed at the bottom of the powder bottle and is configured to allow air in the bottom air chamber to enter the powder chamber unidirectionally through the first bottom air inlet of the powder bottle. A third one-way valve, which is installed at the bottom of the powder bottle, is configured to allow air from the external environment to enter the bottom air chamber unidirectionally through the second bottom air inlet of the powder bottle.

[0009] According to one embodiment of the present invention, the powder spray bottle includes a stirring part, which is rotatably mounted at the bottom of the powder chamber of the powder bottle.

[0010] According to one embodiment of the present invention, the stirring part includes an assembly column and a stirring arm. The stirring arm extends laterally outward from the bottom of the assembly column. The assembly column has an assembly column hole and a bottom notch communicating with the assembly column hole. The assembly column is rotatably inserted into the bottom of the powder column hole of the powder column. The stirring arm is located at the bottom of the powder cavity of the powder bottle. The powder column hole of the powder column communicates with the powder cavity of the powder bottle through the assembly column hole and the bottom notch of the assembly column.

[0011] According to one embodiment of the present invention, the powder spray bottle includes a valve stem, the top of which is mounted on the cap portion, the bottom of which extends into the mounting post hole of the mounting post, the bottom of which has an external thread structure, and the inner wall of the mounting post has an internal thread structure. The external thread structure of the valve stem and the internal thread structure of the mounting post cooperate with each other, so that the mounting post is drivably connected to the bottom of the valve stem.

[0012] According to one embodiment of the present invention, the headgear includes an inner cap and an outer cap. The inner cap has an inner cap hole, and the outer cap has an outer cap hole. The outer cap is installed on the inner cap. The outer cap hole of the outer cap and the inner cap hole of the inner cap form the headgear channel of the headgear. The inner cap is fitted onto the valve stem with the bottom of the valve stem passing through the inner cap hole. The top of the valve stem can move upward away from the top edge of the inner cap to open the top opening of the inner cap hole of the inner cap. The top of the valve stem can move downward and rest against the top edge of the inner cap to close the top opening of the inner cap hole of the inner cap.

[0013] According to one embodiment of the present invention, the top edge of the inner cap has a tapered groove, the top of the valve stem is tapered, and the top of the valve stem can enter or exit the tapered groove of the inner cap.

[0014] According to one embodiment of the present invention, the powder bottle includes a bottle body, a top cap, and a piston bottom. The top cap and the piston bottom are respectively installed on the top and bottom of the bottle body to form the powder cavity between the bottle body, the top cap, and the piston bottom. The powder outlet and the top air inlet of the powder bottle are respectively provided on the top cap. The first one-way valve is installed on the top cap. The first bottom air inlet and the second bottom air inlet of the powder bottle are respectively provided on the piston bottom. The second one-way valve and the third one-way valve are respectively installed on the piston bottom. The peripheral wall of the piston bottom is attached to the inner wall of the outer bottle. The bottom air cavity is formed between the piston bottom and the outer bottle.

[0015] According to one embodiment of the present invention, the powder bottle includes a bottle body, a top cap, and a piston bottom. The top cap and the piston bottom are respectively installed on the top and bottom of the bottle body to form the powder cavity between the bottle body, the top cap, and the piston bottom. The powder outlet and the top air inlet of the powder bottle are respectively provided on the top cap. The first one-way valve is installed on the top cap. The first bottom air inlet and the second bottom air inlet of the powder bottle are respectively provided on the piston bottom. The second one-way valve and the third one-way valve are respectively installed on the piston bottom. The peripheral wall of the piston bottom is attached to the inner wall of the outer bottle. The bottom air cavity is formed between the piston bottom and the outer bottle. The top cap has a top cap groove. The inner cap is movably installed on the top cap, and the peripheral wall of the inner cap is attached to the inner wall of the top cap. The top air cavity is formed between the inner cap and the top cap.

[0016] According to one embodiment of the present invention, the valve stem has a stop ring in the middle, the top cover has a limiting cylinder, the bottom of the limiting cylinder has at least two stop arms, an arm gap is formed between two adjacent stop arms, the limiting cylinder is inserted into the powder column hole of the powder column, and the end of the stop arm can abut against the stop ring of the valve stem, wherein when the end of the stop arm abuts against the stop ring of the valve stem, the top of the valve stem rests on the top edge of the inner cap.

[0017] According to one embodiment of the present invention, the outer cap has a protruding arm that protrudes toward the top of the valve stem. After the top of the valve stem moves upward away from the top edge of the inner cap, the protruding arm of the outer cap contacts the top of the valve stem. After the top of the valve stem moves downward and rests against the top edge of the inner cap, there is a gap between the protruding arm of the outer cap and the top of the valve stem.

[0018] According to one embodiment of the present invention, the elastic sealing part is a bellows, the top of the elastic sealing part is installed on the cap part, and the bottom is installed on the powder bottle; or, the elastic sealing part includes a deformable sealing tube and a second reset element, the sealing tube forms the tube hole, the top of the sealing tube is installed on the cap part, the bottom is installed on the powder bottle, and the top of the second reset element abuts against the cap part and the bottom abuts against the powder bottle.

[0019] According to one embodiment of the present invention, the outer bottle has a rotation-resistant groove, and the cap portion has ribs extending along the height direction, the ribs of the cap portion protruding into the rotation-resistant groove of the outer bottle.

[0020] According to another aspect of the present invention, the present invention further provides a powder spraying bottle, wherein the powder spraying bottle has a spatially compressible top air chamber, a closable top air inlet, a powder chamber, a spatially compressible bottom air chamber, a closable first bottom air inlet, a closable second bottom air inlet, a powder column hole, a powder outlet hole, a spatially compressible tube hole, and a cap channel. The top air inlet can connect the top air chamber and the powder chamber. The first bottom air inlet can connect the bottom air chamber and the powder chamber. The second bottom air inlet can connect the bottom air chamber and the external environment. The top of the powder column hole is connected to the powder outlet hole, and the bottom is located adjacent to the first bottom air inlet hole. The bottom of the tube hole is connected to the powder outlet hole, and the top is connected to the cap channel.

[0021] According to one embodiment of the present invention, when the space of the top air chamber is compressed, the top air inlet is opened to allow air in the top air chamber to enter the powder chamber through the top air inlet; when the space of the top air chamber is expanded, the top air inlet is closed to prevent air in the powder chamber from entering the top air chamber; when the space of the bottom air chamber is compressed, the first bottom air inlet is opened to allow air in the bottom air chamber to enter the powder chamber through the first bottom air inlet, and the second bottom air inlet is closed to prevent air in the bottom air chamber from being discharged to the external environment through the second bottom air inlet; when the space of the bottom air chamber is expanded, the first bottom air inlet is closed to prevent air in the powder chamber from entering the bottom air chamber through the first bottom air inlet, and the second bottom air inlet is opened to allow air from the external environment to enter the bottom air chamber through the second bottom air inlet.

[0022] According to one embodiment of the present invention, the space of the top air chamber and the space of the tube hole are compressed synchronously.

[0023] According to one embodiment of the present invention, the headgear channel can be closed.

[0024] According to one embodiment of the present invention, the powder spraying bottle includes an outer bottle, a powder bottle, a first reset element, a cap, a powder column, an elastic sealing part, a first one-way valve, a second one-way valve, and a third one-way valve. The cap forms a cap channel and is movably mounted on the top of the powder bottle to form a compressible top air chamber between the cap and the top of the powder bottle. The powder bottle is movably mounted in the cavity of the outer bottle to form a compressible bottom air chamber between the bottom of the powder bottle and the bottom of the outer bottle. A top air inlet is located on the top of the powder bottle, and the first one-way valve is mounted on the top of the powder bottle for... The top air inlet is opened and closed. The first bottom air inlet is located at the bottom of the powder bottle. The second one-way valve is installed at the bottom of the powder bottle to open and close the first bottom air inlet. The second bottom air inlet is located at the bottom of the powder bottle. The third one-way valve is installed at the bottom of the powder bottle to open and close the second bottom air inlet. The tube hole is formed in the elastic sealing part. The opposite ends of the elastic sealing part are respectively connected to the powder bottle and the cap part, so that the top of the tube hole is connected to the powder outlet and the top is connected to the cap channel. The powder column hole is formed in the powder column, and the top of the powder column is installed on the top of the powder bottle.

[0025] According to one embodiment of the present invention, the powder spray bottle includes a stirring part, which is rotatably mounted at the bottom of the powder chamber of the powder bottle.

[0026] According to one embodiment of the present invention, the stirring part includes an assembly column and a stirring arm. The stirring arm extends laterally outward from the bottom of the assembly column. The assembly column has an assembly column hole and a bottom notch communicating with the assembly column hole. The assembly column is rotatably inserted into the bottom of the powder column hole of the powder column. The stirring arm is located at the bottom of the powder cavity of the powder bottle. The powder column hole of the powder column communicates with the powder cavity of the powder bottle through the assembly column hole and the bottom notch of the assembly column.

[0027] According to one embodiment of the present invention, the powder spray bottle includes a valve stem, the top of which is mounted on the cap portion, the bottom of which extends into the mounting post hole of the mounting post, the bottom of which has an external thread structure, and the inner wall of the mounting post has an internal thread structure. The external thread structure of the valve stem and the internal thread structure of the mounting post cooperate with each other, so that the mounting post is drivably connected to the bottom of the valve stem.

[0028] According to one embodiment of the present invention, the headgear includes an inner cap and an outer cap. The inner cap has an inner cap hole, and the outer cap has an outer cap hole. The outer cap is installed on the inner cap. The outer cap hole of the outer cap and the inner cap hole of the inner cap form the headgear channel of the headgear. The inner cap is fitted onto the valve stem with the bottom of the valve stem passing through the inner cap hole. The top of the valve stem can move upward away from the top edge of the inner cap to open the top opening of the inner cap hole of the inner cap. The top of the valve stem can move downward and rest against the top edge of the inner cap to close the top opening of the inner cap hole of the inner cap.

[0029] According to one embodiment of the present invention, the top edge of the inner cap has a tapered groove, the top of the valve stem is tapered, and the top of the valve stem can enter or exit the tapered groove of the inner cap.

[0030] According to one embodiment of the present invention, the powder bottle includes a bottle body, a top cap, and a piston bottom. The top cap and the piston bottom are respectively installed on the top and bottom of the bottle body to form the powder cavity between the bottle body, the top cap, and the piston bottom. The powder outlet and the top air inlet of the powder bottle are respectively provided on the top cap. The first one-way valve is installed on the top cap. The first bottom air inlet and the second bottom air inlet of the powder bottle are respectively provided on the piston bottom. The second one-way valve and the third one-way valve are respectively installed on the piston bottom. The peripheral wall of the piston bottom is attached to the inner wall of the outer bottle. The bottom air cavity is formed between the piston bottom and the outer bottle.

[0031] According to one embodiment of the present invention, the powder bottle includes a bottle body, a top cap, and a piston bottom. The top cap and the piston bottom are respectively installed on the top and bottom of the bottle body to form the powder cavity between the bottle body, the top cap, and the piston bottom. The powder outlet and the top air inlet of the powder bottle are respectively provided on the top cap. The first one-way valve is installed on the top cap. The first bottom air inlet and the second bottom air inlet of the powder bottle are respectively provided on the piston bottom. The second one-way valve and the third one-way valve are respectively installed on the piston bottom. The peripheral wall of the piston bottom is attached to the inner wall of the outer bottle. The bottom air cavity is formed between the piston bottom and the outer bottle. The top cap has a top cap groove. The inner cap is movably installed on the top cap, and the peripheral wall of the inner cap is attached to the inner wall of the top cap. The top air cavity is formed between the inner cap and the top cap.

[0032] According to one embodiment of the present invention, the valve stem has a stop ring in the middle, the top cover has a limiting cylinder, the bottom of the limiting cylinder has at least two stop arms, an arm gap is formed between two adjacent stop arms, the limiting cylinder is inserted into the powder column hole of the powder column, and the end of the stop arm can abut against the stop ring of the valve stem, wherein when the end of the stop arm abuts against the stop ring of the valve stem, the top of the valve stem rests on the top edge of the inner cap.

[0033] According to one embodiment of the present invention, the outer cap has a protruding arm that protrudes toward the top of the valve stem. After the top of the valve stem moves upward away from the top edge of the inner cap, the protruding arm of the outer cap contacts the top of the valve stem. After the top of the valve stem moves downward and rests against the top edge of the inner cap, there is a gap between the protruding arm of the outer cap and the top of the valve stem.

[0034] According to one embodiment of the present invention, the elastic sealing part is a bellows, the top of the elastic sealing part is installed on the cap part, and the bottom is installed on the powder bottle; or, the elastic sealing part includes a deformable sealing tube and a second reset element, the sealing tube forms the tube hole, the top of the sealing tube is installed on the cap part, the bottom is installed on the powder bottle, and the top of the second reset element abuts against the cap part and the bottom abuts against the powder bottle.

[0035] According to one embodiment of the present invention, the outer bottle has a rotation-resistant groove, and the cap portion has ribs extending along the height direction, the ribs of the cap portion protruding into the rotation-resistant groove of the outer bottle. Attached Figure Description

[0036] Figure 1 This is a perspective view of a powder spray bottle according to a preferred embodiment of the present invention.

[0037] Figure 2 This is a cross-sectional schematic diagram of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0038] Figure 3 This is an exploded view of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0039] Figure 4 This is an exploded view of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0040] Figure 5 This is a cross-sectional schematic diagram illustrating one of the usage processes of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0041] Figure 6This is a cross-sectional schematic diagram illustrating the second step in the use of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0042] Figure 7 This is a cross-sectional schematic diagram illustrating the third step in the use of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0043] Figure 8 This is a cross-sectional schematic diagram illustrating the fourth step in the use of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0044] Figure 9 This is a cross-sectional schematic diagram illustrating the fifth step in the use of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0045] Figure 10 This is a cross-sectional schematic diagram illustrating the sixth step in the use of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0046] Figure 11 This is a cross-sectional schematic diagram illustrating the seventh step in the use of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0047] Figure 12 This is a cross-sectional schematic diagram of a modified example of the powder spray bottle according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0048] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to limit the scope of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0049] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0050] Figures 1 to 4 This invention illustrates the specific structure of a powder spray bottle according to a preferred embodiment of the present invention. Figures 5 to 11 The process of using the powder spraying bottle of this utility model is shown. The powder spraying bottle includes an outer bottle 10, a powder bottle 20, a first reset element 30, a powder column 40, a cap 50, an elastic sealing part 60, a first one-way valve 70, a second one-way valve 80, a third one-way valve 90, a top air chamber 100, and a bottom air chamber 110.

[0051] Specifically, the outer bottle 10 has a cavity 11, and the powder bottle 20 is movably mounted in the cavity 11 of the outer bottle 10. A bottom air cavity 110 is formed between the bottom of the outer bottle 10 and the bottom of the powder bottle 20. The first reset element 30 is located in the bottom air cavity 110, and its opposite ends abut against the bottom of the powder bottle 20 and the bottom of the outer bottle 10, respectively. When the powder bottle 20 is subjected to downward pressure, it moves downward relative to the outer bottle 10. The space of the bottom air cavity 110 is compressed, and the height dimension of the first reset element 30 is compressed and deformed, accumulating elastic potential energy. When the first reset element 30 returns to its initial state and pushes the powder bottle 20 upward relative to the outer bottle 10, the space of the bottom air cavity 110 expands. In other words, the space of the bottom air cavity 110 of the powder spray bottle is compressible.

[0052] The powder bottle 20 has a powder cavity 21, a powder outlet 22, a top air inlet 23, a first bottom air inlet 24, and at least one second bottom air inlet 25. The powder column 40 has a powder column hole 41. The powder column 40 is located in the powder cavity 21 of the powder bottle 20. The top of the powder column 40 is installed on the top of the powder bottle 20. The top of the powder column hole 41 of the powder column 40 is connected to the powder outlet 22 of the powder bottle 20. The bottom of the powder column hole 41 is adjacent to the first bottom air inlet 24 of the powder bottle 20.

[0053] The cap portion 50 has a cap channel 51, and the elastic sealing portion 60 has a tube hole 61. The cap portion 50 is movably mounted on the top of the powder bottle 20. The top air cavity 100 is formed between the cap portion 50 and the top of the powder bottle 20. The opposite ends of the elastic sealing portion 60 are respectively connected to the cap portion 50 and the powder bottle 20. The top of the tube hole 61 of the elastic sealing portion 60 communicates with the cap channel 51 of the cap portion 50, and the bottom of the tube hole 61 communicates with the powder outlet 22 of the powder bottle 20. When the cap portion 50 is subjected to downward pressure, and the cap portion 50 moves downward relative to the powder bottle 20, compressing the height dimension of the elastic sealing portion 60, both the space of the top air chamber 100 and the space of the tube hole 61 are compressed. Furthermore, the elastic sealing portion 60 accumulates elastic potential energy. When the elastic sealing portion 60 returns to its initial state and pushes the cap portion 50 upward relative to the powder bottle 20, both the space of the top air chamber 100 and the space of the tube hole 61 expand. In other words, the space of the top air chamber 100 of the powder spray bottle is compressible, and the space of the tube hole 61 of the elastic sealing portion 60 is compressible. Preferably, the space of the top air chamber 100 of the powder spray bottle and the space of the tube hole 61 of the elastic sealing portion 60 are compressed simultaneously.

[0054] A first one-way valve 70 is installed on the top of the powder bottle 20. The first one-way valve 70 is configured to allow air in the top air chamber 100 to flow unidirectionally into the powder chamber 21 of the powder bottle 20 through the top air inlet 23. Specifically, when the space of the top air chamber 100 is compressed, the first one-way valve 70 opens the top air inlet 23 of the powder bottle 20 to allow air in the top air chamber 100 to flow unidirectionally to the powder chamber 21 of the powder bottle 20 through the top air inlet 23. When the space of the top air chamber 100 expands, the first one-way valve 70 closes the top air inlet 23 of the powder bottle 20 to prevent air in the powder chamber 21 of the powder bottle 20 from flowing into the top air chamber 100 through the top air inlet 23. In other words, the top air inlet 23 of the powder bottle 20 can be closed.

[0055] The second one-way valve 80 and the third one-way valve 90 are respectively installed at the bottom of the powder bottle 20. The second one-way valve 80 is configured to allow air in the bottom air chamber 110 to enter the powder chamber 21 of the powder bottle 20 in one direction through the first bottom air inlet 24 of the powder bottle 20. The third one-way valve 90 is configured to allow air from the external environment to enter the bottom air chamber 110 in one direction through the second bottom air inlet 25 of the powder bottle 20. Specifically, when the space of the bottom air chamber 110 is compressed, the second one-way valve 80 opens the first bottom air inlet 24 of the powder bottle 20 to allow air in the bottom air chamber 110 to flow unidirectionally to the powder chamber 21 through the first bottom air inlet 24. At the same time, the third one-way valve 90 closes the second bottom air inlet 25 of the powder bottle 20 to prevent air in the bottom air chamber 110 from being discharged to the external environment through the second bottom air inlet 25. When the space of the bottom air chamber 110 expands, the second one-way valve 80 closes the first bottom air inlet 24 of the powder bottle 20 to prevent air in the powder chamber 21 of the powder bottle 20 from flowing to the bottom air chamber 110 through the first bottom air inlet 24. At the same time, the third one-way valve 90 opens the second bottom air inlet 25 of the powder bottle 20 to allow air from the external environment to flow to the bottom air chamber 110 through the second bottom air inlet 25.

[0056] Dry powder is contained in the powder chamber 21 of the powder bottle 20. Under normal conditions, the first one-way valve 70 closes the top air inlet 23 of the powder bottle 20, the second one-way valve 80 closes the first bottom air inlet 24 of the powder bottle 20, and the third one-way valve 90 closes the second bottom air inlet 25 of the powder bottle 20.

[0057] When the cap portion 50 is pressed and the space of the top air chamber 100 is compressed, a high-pressure environment is formed in the top air chamber 100 to drive the first one-way valve 70 to open the top air inlet 23 of the powder bottle 20. The air in the top air chamber 100 flows unidirectionally to the powder chamber 21 of the powder bottle 20 through the top air inlet 23, so that a high-pressure environment is formed in the powder chamber 21. The air in the powder chamber 21 carries the dry powder and enters through the bottom of the powder column hole 41 of the powder column 40. Further pressing the cap 50 causes the powder bottle 20 to move downwards, compressing the space of the bottom air chamber 110. A high-pressure environment is formed in the bottom air chamber 110, which drives the second one-way valve 80 to open the first bottom air inlet 24 of the powder bottle 20. At this time, the third one-way valve 90 remains closed to the second bottom air inlet 25 of the powder bottle 20. The air in the bottom air chamber 110 flows unidirectionally to the powder chamber 21 of the powder bottle 20 through the first bottom air inlet 24. Since the bottom of the powder column hole 41 of the powder column 40 is located near the first bottom air inlet 24 of the powder bottle 20 and the powder cavity 21 of the powder bottle 20 is already a high-pressure environment, the air in the bottom air cavity 110 flows directly into the powder column hole 41 of the powder column 40 after flowing through the first bottom air inlet 24 of the powder bottle 20 to the powder cavity 21. This will not cause turbulence in the powder cavity 21 of the powder bottle 20, which is conducive to uniform powder output.

[0058] In this utility model, reference is made to the appendix. Figures 2 to 4 The powder bottle 20 includes a bottle body 26, a top cap 27, and a piston base 28. The top cap 27 and the piston base 28 are respectively installed on the top and bottom of the bottle body 26 to form the powder chamber 21 of the powder bottle 20 between the bottle body 26, the top cap 27, and the piston base 28. The powder outlet 22 and the top air inlet 23 of the powder bottle 20 are respectively provided on the top cap 27. The first one-way valve 70 is installed on the top cap 27. The first bottom air inlet 24 and the second bottom air inlet 25 of the powder bottle 20 are respectively provided on the piston base 28. The second one-way valve 80 and the third one-way valve 90 are respectively installed on the piston base 28. By assembling the powder bottle 20 by installing the top cap 27 and the piston base 28 respectively on the bottle body 26, the assembly of the powder spray bottle is facilitated. The peripheral wall of the piston bottom 28 is attached to the inner wall of the outer bottle 10, and the bottom air cavity 110 of the powder spray bottle is formed between the piston bottom 28 and the outer bottle 10.

[0059] Reference Appendix Figure 2 and Figure 4The top cover 27 has a mounting hole 271, which is adjacent to the top air inlet 23 of the powder bottle 20. The first one-way valve 70 includes a deformable umbrella surface 71 and a mounting post 72 extending from the umbrella surface 71. The mounting post 72 is mounted from bottom to top in the mounting hole 271 of the top cover 27. In its natural state, the umbrella surface 71 covers the bottom opening of the top air inlet 23 of the powder bottle 20, allowing the first one-way valve 70 to close the top air inlet 23 of the powder bottle 20. When the space of the top air chamber 100 is compressed, the high-pressure air in the top air chamber 100 drives the umbrella surface 71 of the first one-way valve 70 to deform and open the bottom opening of the top air inlet 23 of the powder bottle 20, allowing air in the top air chamber 100 to flow unidirectionally through the top air inlet 23 of the powder bottle 20 to the powder chamber 21 of the powder bottle 20. When the air pressure in the top air chamber 100 and the air pressure in the powder chamber 21 of the powder bottle 20 are balanced, the umbrella surface 71 returns to its initial state, allowing the first one-way valve 70 to close the top air inlet 23 of the powder bottle 20. Preferably, the umbrella surface 71 of the first one-way valve 70 and the mounting post 72 are integrally molded from silicone material.

[0060] The piston base 28 includes a base plate 281 and an insert ring 282 extending upward from the edge of the base plate 281. The insert ring 282 is inserted into the bottom of the bottle body 26 to mount the piston base 28 to the bottom of the bottle body 26. The bottom of the top cap 27 is screwed onto the top of the bottle body 26 to mount the top cap 27 to the top of the bottle body 26.

[0061] The base plate 281 has a mounting groove 2811 and a plug post 2812 protruding into the mounting groove 2811. The second one-way valve 80 includes a deformable inner valve body 81 and an outer valve body 82. The inner valve body 81 has a first valve groove 811 and a valve hole 812. The outer valve body 82 has a second valve groove 821. The inner valve body 81 is mounted in the second valve groove 821 of the outer valve body 82. The second one-way valve 80 forms a valve cavity 83 between the inner valve body 81 and the outer valve body 82. The valve hole 812 of the inner valve body 81 communicates with the valve cavity 83. The second one-way valve 80 is installed in the mounting groove 2811 of the base plate 281 by inserting the insert post 2812 of the base plate 281 into the first valve groove 811 of the inner valve body 81. The valve hole 812 of the inner valve body 81 communicates with the bottom air chamber 110. There is at least one air passage 120 between the outer valve body 82 and the inner wall of the base plate 281 that forms the mounting groove 2811. In its natural state, the outer wall of the inner valve body 81 is attached to the inner wall of the outer valve body 82, so that the second one-way valve 80 closes the first bottom air inlet 24 of the powder bottle 20, thereby preventing the bottom air chamber 110 and the powder chamber 21 of the powder bottle 20 from communicating. When the space of the bottom air chamber 110 is compressed, the high-pressure air in the bottom air chamber 110 enters the valve chamber 83 through the valve hole 812 of the inner valve body 81 and drives the inner valve body 81 to deform, so that the outer wall of the inner valve body 81 leaves the inner wall of the outer valve body 82, allowing gas to flow to the powder chamber 21 of the powder bottle 20. When the air pressure in the bottom air chamber 110 and the air pressure in the powder chamber 21 of the powder bottle 20 are balanced, the inner valve body 81 returns to its initial state and the outer wall of the inner valve body 81 is attached to the inner wall of the outer valve body 82, so that the second one-way valve 80 closes the first bottom air inlet 24 of the powder bottle 20. Preferably, the inner valve body 81 can be made of silicone material so that the inner valve body 81 is deformable, and the outer valve body 82 can be made of silicone material or plastic material.

[0062] The piston bottom 28 further includes a piston ring 283, an outer ring body 284, and an inner ring body 285. The piston ring 283, the outer ring body 284, and the inner ring body 285 extend downward from the bottom plate 281. The piston ring 283 surrounds the outer ring body 284, and the outer ring body 284 surrounds the inner ring body 285. The piston bottom 28 forms a first groove 286 between the piston ring 283 and the outer ring body 284, and a second groove 287 between the outer ring body 284 and the inner ring body 285. The outer wall of the outer ring body 284 has an annular groove 2841. The second bottom air inlet 25 of the powder bottle 20 is provided on the piston ring 283, and the second bottom air inlet 25 communicates with the annular groove 2841 of the outer ring body 284. The third one-way valve 90 includes a bottom valve ring 91, an outer valve ring 92, and an inner valve ring 93. The outer valve ring 92 and the inner valve ring 93 extend upward from the outer and inner sides of the bottom valve ring 91, respectively. The third one-way valve 90 forms a third valve groove 94 between the bottom valve ring 91, the outer valve ring 92, and the inner valve ring 93. The outer ring body 284 and the inner ring body 285 of the piston bottom 28 are both inserted into the third valve groove 94 of the third one-way valve 90. The outer valve ring 92 is inserted into the first groove 286 of the piston bottom 28, and the inner valve ring 93 is fitted to the inner ring body 285, so that the third one-way valve 90 is installed at the bottom of the powder bottle 20. It is understood that the second groove 287 of the piston bottom 28, the third valve groove 94 of the third one-way valve 90, the annular groove 2841 of the outer ring body 284, and the second bottom air inlet 25 of the powder bottle 20 are sequentially connected. In its natural state, the inner valve ring 93 is fitted against the inner ring body 285, causing the third one-way valve 90 to close the second bottom air inlet 25 of the powder bottle 20, thus preventing the bottom air chamber 110 from communicating with the external environment. When the space of the bottom air chamber 110 is compressed, the third one-way valve 90 remains closed to the second bottom air inlet 25 of the powder bottle 20. When a low-pressure environment is formed in the bottom air chamber 110, the air from the external environment drives the inner valve ring 93 to deform, allowing the second bottom air inlet 25 of the piston bottom 28 to communicate with the external environment. The three-way valve 90 opens the second bottom air inlet 25 of the powder bottle 20, allowing the bottom air chamber 110 to communicate with the external environment. Air from the external environment flows into the bottom air chamber 110 through the second bottom air inlet 25 of the powder bottle 20. When the air pressure in the bottom air chamber 110 and the air pressure in the external environment are restored to equilibrium, the valve inner ring 93 returns to its initial state and fits against the inner ring body 285, so that the second bottom air inlet 25 of the powder bottle 20 is closed by the third one-way valve 90.

[0063] Further, see Appendix Figure 2 and Figure 3The top cover 27 has a top cover groove 272, and the cap portion 50 is movably mounted on the top cover groove 272 of the top cover 27 to form the top air cavity 100 between the top cover 27 and the cap portion 50 of the powder bottle 20.

[0064] Specifically, the cap portion 50 includes an inner cap 52 and an outer cap 53. The inner cap 52 has an inner cap hole 521, and the outer cap 53 has an outer cap hole 531. The outer cap 53 is installed on the inner cap 52. The inner cap hole 521 of the inner cap 52 and the outer cap hole 531 of the outer cap 53 form the cap channel 51 of the cap portion 50. The peripheral wall of the inner cap 52 fits against the inner wall of the top cover 27, thereby forming the top air cavity 100 between the top cover 27 of the powder bottle 20 and the inner cap 52 of the cap portion 50.

[0065] Preferably, the inner cap hole 521 of the inner cap 52 and the outer cap hole 531 of the outer cap 53 of the head cap 50 extend in different directions. For example, the inner cap hole 521 of the inner cap 52 extends in the height direction, and the outer cap hole 531 of the outer cap 53 extends in a roughly horizontal direction. In this way, when the user presses the outer cap 53 of the head cap 50, the outer cap hole 531 of the outer cap 53 can be prevented from being blocked.

[0066] In this invention, the elastic sealing part 60 is a bellows. The top of the elastic sealing part 60 is installed on the inner cap 52 of the cap part 50, such that the top of the tube hole 61 of the elastic sealing part 60 communicates with the inner cap hole 521 of the inner cap 52. The bottom of the elastic sealing part 60 is installed on the top cover 27, such that the bottom of the tube hole 61 of the elastic sealing part 60 communicates with the powder outlet hole 22 of the powder bottle 20. The height dimension of the elastic sealing part 60 can accumulate elastic potential energy after being compressed. After the external force applied to the elastic sealing part 60 is removed, the elastic sealing part 60 can automatically return to its initial state.

[0067] In this utility model, reference is made to the appendix. Figure 2 and Figure 3 The outer bottle 10 has a rotation-blocking groove 14, and the cap portion 50 has a rib 54 extending along the height direction. The rib 54 of the cap portion 50 protrudes into the rotation-blocking groove 14 of the outer bottle 10. In this way, the cap portion 50 is only allowed to move in the height direction without rotating relative to the outer bottle 10, thereby preventing the elastic sealing portion 60 from being subjected to circumferential forces, so as to avoid damage to the elastic sealing portion 60 and prevent the opposite ends of the elastic sealing portion 60 from falling off from the inner cap 52 and the top cap 27.

[0068] In this utility model, the outer bottle 10 includes a peripheral wall portion 12 and a bottom cap portion 13. The bottom cap portion 13 is installed at the bottom of the peripheral wall portion 12 to form the bottle cavity 11 of the outer bottle 10 between the peripheral wall portion 12 and the bottom cap portion 13. The rotating groove 14 is provided at the opening of the peripheral wall portion 12. The top of the outer cap 53 protrudes from the peripheral wall portion 12, and the bottom extends into the bottle cavity 11 through the opening of the peripheral wall portion 12.

[0069] Continue to refer to the appendix Figures 2 to 4 The powder spray bottle further includes a stirring part 130, which is rotatably mounted on the bottom of the powder bottle 20. The stirring part 130 is used to stir the dry powder contained in the powder cavity 21 of the powder bottle 20 to prevent the dry powder from clumping.

[0070] In the powder spray bottle of this utility model, the stirring part 130 includes an assembly column 1301 and at least one stirring arm 1302. The stirring arm 1302 extends laterally outward from the bottom of the assembly column 1301. The assembly column 1301 has an assembly column hole 13011 and at least one bottom notch 13012 communicating with the assembly column hole 13011. The assembly column 1301 is rotatably inserted into the bottom of the powder column hole 41 of the powder column 40. The stirring arm 1302 is located at the bottom of the powder cavity 21 of the powder bottle 20. The powder column hole 41 of the powder column 40 is connected to the powder cavity 21 of the powder bottle 20 through the assembly column hole 13011 and the bottom notch 13012 of the assembly column 1301. The assembly column 1301 and the powder column 40 cooperate to reliably hold the stirring arm 1302 at the bottom of the powder chamber 21 of the powder bottle 20, and allow it to rotate at the bottom of the powder chamber 21 of the powder bottle 20. Unlike existing dry powder spray bottles, in the powder spray bottle of this invention, the stirring part 130 is entirely located in the powder chamber 21 of the powder bottle 20. Therefore, the powder spray bottle of this invention does not need to consider the sealing problem of the stirring part 130 and the powder bottle 20, and there is no risk of dry powder leaking into the bottom air chamber 110.

[0071] In this specific example of the powder spray bottle of this utility model, the stirring part 130 has three stirring arms 1302, which are arranged at intervals. Each stirring arm 1302 has a first stirring protrusion 13021 at its end and a second stirring protrusion 13022 in its middle part, for improving the stirring effect.

[0072] The powder spraying bottle also includes a valve stem 140, which is used to connect the cap 50 and the stirring part 130. Whether the cap 50 is pressed or released, the valve stem 140 can drive the stirring part 130 to rotate, so as to stir the dry powder contained in the powder chamber 21 of the powder bottle 20.

[0073] Specifically, the top of the valve stem 140 is mounted on the head cap 50, and the bottom of the valve stem 140 extends into the mounting post hole 13011 of the mounting post 1301 of the stirring part 130. The bottom of the valve stem 140 has an external thread structure, and the inner wall of the mounting post 1301 has an internal thread structure. The external thread structure of the valve stem 140 and the internal thread structure of the mounting post 1301 cooperate with each other, so that the mounting post 1301 is drivably connected to the valve stem 140. At the bottom, when the cap 50 is pressed and the valve stem 140 moves downward by the cap 50, the valve stem 140 drives the stirring part 130 to rotate clockwise to stir the dry powder contained in the powder cavity 21 of the powder bottle 20. When the cap 50 is released and the valve stem 140 moves upward by the cap 50, the valve stem 140 drives the stirring part 130 to rotate counterclockwise to stir the dry powder contained in the powder cavity 21 of the powder bottle 20.

[0074] Preferably, the inner cap 52 is fitted onto the valve stem 140 such that the bottom of the valve stem 140 passes through the inner cap hole 521, wherein the top of the valve stem 140 is movable upward away from the top edge of the inner cap 52 to open the top opening of the inner cap hole 521 of the inner cap 52. At this time, the inner cap hole 521 of the inner cap 52 and the outer cap hole 531 of the outer cap 53 are connected to allow the powder spray bottle to spray powder outward. The top can move downwards and rest against the top edge of the inner cap 52 to close the top opening of the inner cap hole 521 of the inner cap 52. At this time, the inner cap hole 521 of the inner cap 52 and the outer cap hole 531 of the outer cap 53 are no longer continuous, so as to prevent air from the external environment from entering the powder cavity 21 of the powder bottle 20 through the cap channel 51 of the cap part 50, thereby keeping the dry powder contained in the powder cavity 21 of the powder bottle 20 dry and preventing clumping.

[0075] More preferably, the top edge of the inner cap 52 has a conical groove 522, and the top of the valve stem 140 is conical. The top of the valve stem 140 can enter or exit the conical groove 522 of the inner cap 52. When the valve stem 140 enters the conical groove 522 of the inner cap 52, the top edge of the inner cap 52 and the top of the valve stem 140 have a larger contact area to ensure that the top of the valve stem 140 reliably closes the top opening of the inner cap hole 521 of the inner cap 52.

[0076] The valve stem 140 has a stop ring 1401 in the middle, and the top cover 27 has a limiting cylinder 273. The bottom of the limiting cylinder 273 has at least two stop arms 2731, and an arm gap 2732 is formed between two adjacent stop arms 2731. The limiting cylinder 273 is inserted into the powder column hole 41 of the powder column 40. The end of the stop arm 2731 can abut against the stop ring 1401 of the valve stem 140. When the end of the stop arm 2731 abuts against the stop ring 1401 of the valve stem 140, the top of the valve stem 140 rests against the top edge of the inner cap 52 to ensure that the top of the valve stem 140 reliably closes the top opening of the inner cap hole 521 of the inner cap 52.

[0077] Furthermore, the outer cap 53 has a protruding arm 532 that protrudes toward the top of the valve stem 140. In its natural state, there is a gap between the protruding arm 532 of the outer cap 53 and the top of the valve stem 140. After the top of the valve stem 140 moves upward away from the top edge of the inner cap 52, the protruding arm 532 of the outer cap 53 contacts the top of the valve stem 140. At this time, the protruding arm 532 of the outer cap 53 is used to ensure that the inner cap hole 521 of the inner cap 52 and the outer cap hole 531 of the outer cap 53 are connected.

[0078] Reference Appendix Figure 5 and Figure 6When the user presses down on the cap 50, the space of the top air chamber 100 and the space of the tube hole 61 of the elastic sealing part 60 are slightly compressed. The first one-way valve 70 opens the top air inlet 23 of the powder bottle 20, so that the air in the top air chamber 100 enters the powder chamber 21 through the top air inlet 23 of the powder bottle 20. At this time, the air pressure in the powder chamber 21, the powder column hole 41 of the powder column 40 and the tube hole 61 of the elastic sealing part 60 increases. The valve stem 140 remains stationary, causing the bottom of the valve stem 140 to move away from the top edge of the inner cap 52, so as to open the top opening of the inner cap hole 521 of the inner cap 52. At this time, the protruding arm 532 of the outer cap 53 contacts the top of the valve stem 140. Understandably, at this stage, since the valve stem 140 remains stationary and the inner cap 52 of the head cap 50 moves downward, this is equivalent to the top of the valve stem 140 moving upward relative to the inner cap 52, allowing the top of the valve stem 140 to move away from the top edge of the inner cap 52.

[0079] Reference Appendix Figure 7 and Figure 8 Continue pressing down on the cap 50. The cap 50 drives the valve stem 140 to move downwards synchronously. During this process, on the one hand, the space of the top air chamber 100 is further compressed, causing the air in the top air chamber 100 to enter the powder chamber 21 through the top air inlet 23 of the powder bottle 20. This allows the dry powder in the powder chamber 21 to flow sequentially through the bottom notch 13012 and the assembly column hole 13011 of the assembly column 1301, the powder column hole 41 of the powder column 40, and the powder outlet of the powder bottle 20. After the discharge from the orifice 22, the tube hole 61 of the elastic sealing part 60, the inner cap hole 521 of the inner cap 52, and the outer cap hole 531 of the outer cap 53, the discharge is ejected. On the other hand, the height dimension of the elastic sealing part 60 is compressed to accumulate elastic potential energy. Furthermore, the external thread structure of the valve stem 140 and the internal thread structure of the assembly column 1301 cooperate with each other to drive the stirring part 130 to rotate clockwise at the bottom of the powder chamber 21 of the powder bottle 20, so as to stir the dry powder contained in the powder chamber 21 of the powder bottle 20.

[0080] Reference Appendix Figure 9Continue pressing down on the cap 50, which applies pressure to the powder bottle 20, causing it to move downwards relative to the outer bottle 10. During this process, the space of the bottom air chamber 110 is compressed, causing the second one-way valve 80 to open the first bottom air inlet 24 of the powder bottle 20. Air from the bottom air chamber 110 enters the powder chamber 21 through the first bottom air inlet 24 of the powder bottle 20. Since the bottom of the powder column hole 41 of the powder column 40 is located adjacent to the first bottom air inlet of the powder bottle 20... Given the location of the air inlet 24 and the fact that the powder chamber 21 of the powder bottle 20 is already under high pressure, the air in the bottom air chamber 110 flows directly into the powder column hole 41 of the powder column 40 after passing through the first bottom air inlet 24 of the powder bottle 20 to the powder chamber 21. This prevents turbulence from forming in the powder chamber 21 of the powder bottle 20, thus facilitating uniform powder dispensing. On the other hand, the third one-way valve 90 keeps the second bottom air inlet 25 of the powder bottle 20 closed. Furthermore, the height of the first reset element 30 is compressed, accumulating elastic potential energy.

[0081] Reference Appendix Figure 10 and Figure 11After the cap 50 is released, the first reset element 30 pushes the powder bottle 20, the cap 50, and the valve stem 140 upwards during the process of restoring the initial state, thereby expanding the space of the bottom air chamber 110 to form a low-pressure environment. The second one-way valve 80 closes the first bottom air inlet 24 of the powder bottle 20 to prevent dry powder in the powder chamber 21 of the powder bottle 20 from leaking into the bottom air chamber 110. The air in the external environment drives the third one-way valve 90 to open the second bottom air inlet 25 of the powder bottle 20, allowing air from the external environment to enter the bottom air chamber 110 through the second bottom air inlet 25. After the air pressure in the bottom air chamber 110 and the air pressure in the external environment are restored to equilibrium, the third one-way valve 90 automatically closes the second bottom air inlet 25 of the powder bottle 20. 5. On the other hand, as the valve stem 140 moves upward, it drives the stirring part 130 to rotate counterclockwise at the bottom of the powder chamber 21 of the powder bottle 20 to stir the dry powder contained in the powder chamber 21 of the powder bottle 20. Furthermore, as the elastic sealing part 60 returns to its initial state, it pushes the cap part 50 and the valve stem 140 upward. The first one-way valve 70 closes the top air inlet 23 of the powder bottle 20 to prevent the dry powder in the powder chamber 21 of the powder bottle 20 from leaking into the top air chamber 100. The air in the external environment drives the peripheral wall of the inner cap 52 to deform slightly so that the air in the external environment can enter the top air chamber 100. After the air pressure in the top air chamber 100 and the air pressure in the external environment are restored to balance, the peripheral wall of the inner cap 52 returns to its initial state and fits against the inner wall of the top cover 27. After the elastic sealing part 60 returns to its initial state, the top of the valve stem 140 enters the conical groove 522 of the inner cap 52 to close the top opening of the inner cap hole 521 of the inner cap 52.

[0082] Appendix Figure 12 The illustration shows a modified example of the powder spray bottle of this invention, with reference to the appendix. Figures 1 to 11 The difference is that, in the appendix Figure 12 In this specific example of the powder spray bottle of the present invention shown, the elastic sealing part 60 includes a deformable sealing tube 62 and a second reset element 63. The sealing tube 62 forms the tube hole 61. The top of the sealing tube 62 is installed on the inner cap 52 of the cap portion 50, and the bottom of the sealing tube 62 is installed on the top cover 27 of the powder bottle 20. The top of the second reset element 63 abuts against the inner cap 52 of the cap portion 50, and the bottom of the second reset element 63 abuts against the top cover 27 of the powder bottle 20.

[0083] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A powder spray bottle, characterized in that, The powder spray bottle has a spatially compressible top air chamber, a closable top air inlet, a powder chamber, a spatially compressible bottom air chamber, a closable first bottom air inlet, a closable second bottom air inlet, a powder column hole, a powder outlet, a spatially compressible tube hole, and a cap channel. The top air inlet connects the top air chamber and the powder chamber. The first bottom air inlet connects the bottom air chamber and the powder chamber. The second bottom air inlet connects the bottom air chamber and the external environment. The top of the powder column hole connects to the powder outlet, and the bottom is located adjacent to the first bottom air inlet. The bottom of the tube hole connects to the powder outlet, and the top connects to the cap channel.

2. The powder spray bottle according to claim 1, wherein when the space of the top air chamber is compressed, the top air inlet is opened to allow air in the top air chamber to enter the powder chamber through the top air inlet; when the space of the top air chamber expands, the top air inlet is closed to prevent air in the powder chamber from entering the top air chamber; when the space of the bottom air chamber is compressed, the first bottom air inlet is opened to allow air in the bottom air chamber to enter the powder chamber through the first bottom air inlet and the second bottom air inlet is closed to prevent air in the bottom air chamber from being discharged to the external environment through the second bottom air inlet; when the space of the bottom air chamber expands, the first bottom air inlet is closed to prevent air in the powder chamber from entering the bottom air chamber through the first bottom air inlet and the second bottom air inlet is opened to allow air from the external environment to enter the bottom air chamber through the second bottom air inlet.

3. The powder spray bottle according to claim 2, wherein the space of the top air chamber and the space of the tube hole are compressed synchronously.

4. The powder spray bottle according to claim 2, wherein the cap channel is closable.

5. The powder spraying bottle according to claim 2, wherein the powder spraying bottle comprises an outer bottle, a powder bottle, a first reset element, a cap portion, a powder column, an elastic sealing portion, a first one-way valve, a second one-way valve, and a third one-way valve; the cap portion forms the cap channel; the cap portion is movably mounted vertically on the top of the powder bottle to form a spatially compressible top air chamber between the cap portion and the top of the powder bottle; the powder bottle is movably mounted vertically in the bottle cavity of the outer bottle to form a spatially compressible bottom air chamber between the bottom of the powder bottle and the bottom of the outer bottle; the top air inlet is provided at the top of the powder bottle; and the first one-way valve is mounted at the top of the powder bottle. The first bottom air inlet is located at the bottom of the powder bottle, and the second one-way valve is installed at the bottom of the powder bottle. The third one-way valve is also installed at the bottom of the powder bottle to open and close the first bottom air inlet. A tube hole is formed in the elastic sealing portion, and the opposite ends of the elastic sealing portion are respectively connected to the powder bottle and the cap portion, so that the top of the tube hole communicates with the powder outlet and the cap channel. A powder column hole is formed in the powder column, and the top of the powder column is installed on the top of the powder bottle.

6. The powder spraying bottle according to claim 5, wherein the powder spraying bottle includes a stirring unit, the stirring unit being rotatably mounted at the bottom of the powder chamber of the powder bottle.

7. The powder spray bottle according to claim 6, wherein the stirring part includes an assembly column and a stirring arm, the stirring arm extending laterally outward from the bottom of the assembly column, the assembly column having an assembly column hole and a bottom notch communicating with the assembly column hole, the assembly column being rotatably inserted into the bottom of the powder column hole of the powder column, the stirring arm being located at the bottom of the powder cavity of the powder bottle, and the powder column hole of the powder column communicating with the powder cavity of the powder bottle through the assembly column hole and the bottom notch of the assembly column.

8. The powder spraying bottle according to claim 7, wherein the powder spraying bottle includes a valve stem, the top of the valve stem being mounted on the cap portion, the bottom of the valve stem extending into the mounting post hole of the mounting post, the bottom of the valve stem having an external thread structure, the inner wall of the mounting post having an internal thread structure, the external thread structure of the valve stem and the internal thread structure of the mounting post cooperating with each other, such that the mounting post is drivably connected to the bottom of the valve stem.

9. The powder spray bottle according to claim 8, wherein the cap portion comprises an inner cap and an outer cap, the inner cap having an inner cap hole, the outer cap having an outer cap hole, the outer cap being mounted on the inner cap, the outer cap hole of the outer cap and the inner cap hole of the inner cap forming the cap channel of the cap portion, the inner cap being fitted onto the valve stem such that the bottom of the valve stem passes through the inner cap hole, the top of the valve stem being movable upward away from the top edge of the inner cap to open the top opening of the inner cap hole of the inner cap, and the top of the valve stem being movable downward to rest against the top edge of the inner cap to close the top opening of the inner cap hole of the inner cap.

10. The powder spray bottle according to claim 9, wherein the top edge of the inner cap has a conical groove, the top of the valve stem is conical, and the top of the valve stem is capable of entering or exiting the conical groove of the inner cap.

11. The powder spray bottle according to claim 5, wherein the powder bottle includes a bottle body, a top cap, and a piston bottom, the top cap and the piston bottom are respectively installed on the top and bottom of the bottle body to form the powder cavity between the bottle body, the top cap, and the piston bottom, the powder outlet and the top air inlet of the powder bottle are respectively provided on the top cap, the first one-way valve is installed on the top cap, the first bottom air inlet and the second bottom air inlet of the powder bottle are respectively provided on the piston bottom, the second one-way valve and the third one-way valve are respectively installed on the piston bottom, the peripheral wall of the piston bottom is attached to the inner wall of the outer bottle, and the bottom air cavity is formed between the piston bottom and the outer bottle.

12. The powder spray bottle according to claim 9, wherein the powder bottle includes a bottle body, a top cap, and a piston bottom, the top cap and the piston bottom are respectively installed on the top and bottom of the bottle body to form the powder cavity between the bottle body, the top cap, and the piston bottom, the powder outlet and the top air inlet of the powder bottle are respectively provided on the top cap, the first one-way valve is installed on the top cap, the first bottom air inlet and the second bottom air inlet of the powder bottle are respectively provided on the piston bottom, the second one-way valve and the third one-way valve are respectively installed on the piston bottom, the peripheral wall of the piston bottom is attached to the inner wall of the outer bottle, the bottom air cavity is formed between the piston bottom and the outer bottle, wherein the top cap has a top cap groove, the inner cap is movably installed on the top cap and the peripheral wall of the inner cap is attached to the inner wall of the top cap, and the top air cavity is formed between the inner cap and the top cap.

13. The powder spray bottle according to claim 12, wherein the valve stem has a stop ring at its middle portion, the top cover has a limiting cylinder, the bottom of the limiting cylinder has at least two stop arms, an arm gap is formed between two adjacent stop arms, the limiting cylinder is inserted into the powder column hole of the powder column, the end of the stop arm is capable of abutting the stop ring of the valve stem, wherein when the end of the stop arm abuts the stop ring of the valve stem, the top of the valve stem rests on the top edge of the inner cap.

14. The powder spray bottle of claim 13, wherein the outer cap has a convex arm projecting toward the top of the valve stem, wherein after the top of the valve stem moves upward away from the top edge of the inner cap, the convex arm of the outer cap contacts the top of the valve stem, and after the top of the valve stem moves downward and rests against the top edge of the inner cap, there is a gap between the convex arm of the outer cap and the top of the valve stem.

15. The powder spray bottle according to any one of claims 5 to 14, wherein the resilient seal is a bellows, the top of the resilient seal is mounted to the cap portion, and the bottom is mounted to the powder bottle; or, the resilient seal comprises a deformable sealing tube and a second reset element, the sealing tube forming the tube hole, the top of the sealing tube being mounted to the cap portion, the bottom being mounted to the powder bottle, and the top of the second reset element abutting against the cap portion and the bottom abutting against the powder bottle.

16. The powder spray bottle according to claim 15, wherein the outer bottle has a rotation-blocking groove, and the cap portion has a rib extending along the height direction, the rib of the cap portion protruding into the rotation-blocking groove of the outer bottle.

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