Duster

Abstract

The utility model discloses a kind of powder spraying bottles, including first check valve, second check valve, head cap, outer bottle and inner bottle, the inner bottle is installed in the bottle cavity of the outer bottle and can be moved up and down, the powder spraying bottle forms compressible air cavity between the bottom of the outer bottle and the bottom of the inner bottle, the inner bottle has compressible air chamber, powder cavity, powder outlet passage, top air hole and bottom air hole, the air chamber is communicated with the powder cavity by the top air hole, the air cavity is communicated with the bottom of the powder outlet passage by the bottom air hole, the side of the powder outlet passage is communicated with the powder cavity, the first check valve is installed on the top of the inner bottle, for making the air in the air chamber one-way flow to the powder cavity, the second check valve is installed on the bottom of the inner bottle, for making the air in the air cavity one-way flow to the powder outlet passage, the head cap is installed on the top of the inner bottle, and the head cap channel of the head cap is communicated with the top of the powder outlet passage of the inner bottle.

Description

Technical Field

[0001] This utility model relates to the field of powder distribution technology, and in particular to a powder spraying bottle. Background Technology

[0002] In Chinese invention patent application CN114104527A, the inventor disclosed a dry powder spray bottle, which includes a bottle body, an upper cap, a head 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 located 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 located in the inner bottle. A small one-way valve is located 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 structure 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 located 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 indicating whether the cap is closed or open is located on the outside of the cap. The lower end face of the switch is formed around the through hole with a cylindrical socket for inserting the upper end of the delivery tube. The switch has a circular outer edge that abuts against the upper end of the inner bottle. The upper end of the switch is provided with an annular groove for inserting and rotating the lower end of the cap. The inner wall of the annular groove is provided with an annular rib. The lower end of the cap is provided with a cylindrical structure that fits into the annular groove. The inner wall of the cylindrical structure is provided with an annular rib that fits into the annular rib. The specific operating procedure is as follows: 1. In the initial state, the blockage at the bottom of the cap abuts against the powder outlet of the switch base, 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 base, creating a passage between the dry powder and the outside world for smooth powder dispensing; 3. Press down the cap, the inner bottle moves down, the small one-way valve opens, the airbag structure continuously shrinks, and 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. Release the cap, and under the action of the spring, the inner bottle and cap 3 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 releasing 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.

[0003] The existing dry powder spray bottle technology has the following drawbacks: First, the lower end of the delivery tube is suspended in the powder storage chamber. When the cap is pressed, causing the inner bottle to move down and the small one-way valve to open, the airflow in the airbag structure enters the powder storage chamber after passing through the small one-way valve, rather than directly entering the delivery tube. The airflow entering the powder storage chamber blows away the dry powder located throughout the entire powder storage chamber, and the direction of the dry powder flight is uncertain. This means that the user cannot determine the amount of dry powder and the airflow rate entering the delivery tube each time the cap is pressed, affecting the powder spraying effect of the dry powder spray bottle. Second, before each use, the cap needs to be rotated to open the powder outlet of the switch base, and after each use, the cap needs to be rotated in the opposite direction to close the powder outlet of the switch base, making the operation process cumbersome. Utility Model Content

[0004] One objective of this invention is to provide a powder spray bottle in which, when a user presses the cap to drive the inner bottle downward, the air cavity formed between the bottom of the inner bottle and the bottom of the outer bottle is compressed. The air in the air cavity is only allowed to enter the powder outlet channel of the inner bottle and will not enter the powder cavity of the inner bottle. Thus, the amount and spray speed of dry powder particles sprayed from the powder spray bottle are consistent each time the user presses the cap.

[0005] One objective of this invention is to provide a powder spraying bottle in which, when a user presses the cap to drive the inner bottle downward, the inner bottle compresses the reset element downward, causing the reset element to accumulate elastic potential energy. When the user releases the cap, during the process of the reset element pushing the inner bottle back to its original position, the powder-tapping head of the powder spraying bottle's tapping rod can tap the bottom of the inner bottle to prevent the dry powder particles from clumping together.

[0006] One objective of this invention is to provide a powder spray bottle, wherein the shield of the powder-tapping rod can allow and prevent communication between the powder outlet channel and the powder cavity of the inner bottle. When the user presses the cap to drive the inner bottle downward, the shield of the powder-tapping rod allows communication between the powder outlet channel and the powder cavity of the inner bottle, so that the dry powder particles stored in the powder cavity can enter the powder outlet channel. After the reset element pushes the inner bottle to reset, the shield of the powder-tapping rod prevents communication between the powder outlet channel and the powder cavity of the inner bottle, so as to prevent humid air from entering the powder cavity and thus prevent the dry powder particles from clumping.

[0007] One objective of this invention is to provide a powder spray bottle, wherein the powder spray bottle can spray out the dry powder particles throughout the entire process of the user pressing the cap.

[0008] According to one aspect of the present invention, a powder spray bottle is provided, comprising: First check valve; A second check valve; A cap, wherein the cap has a cap passage; An outer bottle, wherein the outer bottle has a cavity; and An inner bottle is movably mounted on the cavity of an outer bottle. A powder spray bottle forms a compressible air cavity between the bottom of the outer bottle and the bottom of the inner bottle. The inner bottle has a compressible air chamber, a powder cavity, a powder outlet channel, a top air hole, and a bottom air hole. The air chamber is connected to the powder cavity through the top air hole, and the air cavity is connected to the bottom of the powder outlet channel through the bottom air hole. The side of the powder outlet channel is connected to the powder cavity. A first one-way valve is installed on the top of the inner bottle to allow air in the air chamber to flow unidirectionally to the powder cavity. A second one-way valve is installed on the bottom of the inner bottle to allow air in the air cavity to flow unidirectionally to the powder outlet channel. A cap is installed on the top of the inner bottle, and the cap channel of the cap is connected to the top of the powder outlet channel of the inner bottle.

[0009] According to one embodiment of the present invention, the inner bottle includes a bottle body, a top cap, a piston, a powder column, an air inflator cap, and an elastic corrugated tube. The top cap and the piston 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. The top and bottom of the powder column are respectively connected to the top cap and the piston. A portion of the powder outlet channel is formed in the powder column. The air inflator cap is movably installed on the top cap. The air chamber is formed between the air inflator cap and the top cap. The top and bottom of the elastic corrugated tube are respectively installed on the air inflator cap and the top cap. Another portion of the powder outlet channel is formed in the elastic corrugated tube. A top air hole is formed on the top cap. A first one-way valve is installed on the top cap. A bottom air hole is formed on the piston. A second one-way valve is installed on the piston. The peripheral wall of the piston is fitted against the inner wall of the outer bottle. The air chamber is formed between the piston of the inner bottle and the outer bottle.

[0010] According to one embodiment of the present invention, the inner bottle includes a bottle body, a top cap, a piston, a powder column, an air inflator cap, a deformable sealing tube, and an elastic body. The top cap and the piston are respectively installed on the top and bottom of the bottle body to form the powder chamber between the bottle body, the top cap, and the piston. The top and bottom of the powder column are respectively connected to the top cap and the piston. A portion of the powder outlet channel is formed in the powder column. The air inflator cap is movably installed on the top cap, and the air chamber is formed between the air inflator cap and the top cap. The top and bottom of the sealing tube are respectively installed on the air inflator cap and the top cap. Another part of the powder outlet channel is formed in the sealing tube. The elastomer is configured to keep its top fixed relative to the air inflator cap and its bottom fixed relative to the top cap. The top air hole is formed in the top cap. The first one-way valve is installed in the top cap. The bottom air hole is formed in the piston. The second one-way valve is installed in the piston. The peripheral wall of the piston is attached to the inner wall of the outer bottle. The air chamber is formed between the piston of the inner bottle and the outer bottle.

[0011] According to one embodiment of the present invention, the elastomer surrounds the outside of the sealing tube, the top of the elastomer abuts against the top edge of the sealing tube so that the top of the elastomer is set to remain stationary relative to the air inflator cap, and the bottom of the elastomer abuts against the bottom edge of the sealing tube so that the bottom of the elastomer is set to remain stationary relative to the top cap.

[0012] According to one embodiment of the present invention, the top and bottom of the powder column are respectively installed in the middle of the top cover and the middle of the piston, so that the powder cavity surrounds the powder outlet channel.

[0013] According to one embodiment of the present invention, the bottom of the inner bottle has at least one rod hole, wherein the powder spraying bottle includes at least one powder-tapping rod and at least one reset element. The powder-tapping rod includes a powder-tapping head and a rod extending downward from the powder-tapping head. The powder-tapping head is located in the powder cavity of the inner bottle. The bottom of the rod extends through the rod hole to the air cavity, and the powder-tapping rod remains stationary relative to the outer bottle. The top of the reset element abuts against the bottom of the inner bottle, and the bottom of the reset element remains stationary relative to the outer bottle.

[0014] According to one embodiment of the present invention, the bottom of the inner bottle has two rod holes, which are located on opposite sides of the powder column. The powder spraying bottle includes two powder-tapping rods and two reset elements. Each powder-tapping rod includes a powder-tapping head and a rod extending downward from the powder-tapping head. The powder-tapping head is located in the powder cavity of the inner bottle. The bottom of the rod extends through the rod hole to the air cavity. The powder-tapping rod remains stationary relative to the outer bottle. The top of the reset element abuts against the bottom of the inner bottle, and the bottom of the reset element remains stationary relative to the outer bottle.

[0015] According to one embodiment of the present invention, the powder spraying bottle includes an assembly, the assembly being disposed at the bottom of the bottle cavity of the outer bottle, the bottom of the rod being inserted into the assembly, and the bottom of the reset element abutting against the assembly, thereby keeping the powder spraying rod and the bottom of the reset element stationary relative to the outer bottle.

[0016] According to one embodiment of the present invention, the bottom of the rod is inserted into the bottom of the outer bottle, and the bottom of the reset element abuts against the bottom of the outer bottle, so that the bottom of the powder-applying rod and the bottom of the reset element remain stationary relative to the outer bottle.

[0017] According to one embodiment of the present invention, the powder applicator includes a shielding plate disposed on the inner side of the powder applicator head. The shielding plate has a contact surface, the shape of which is consistent with the shape of the outer surface of the powder column. The contact surface of the shielding plate is slidably attached to the outer surface of the powder column to allow and prevent the powder cavity from communicating with the powder outlet channel.

[0018] According to one embodiment of the present invention, the inner bottle includes at least one sealing part, the sealing part having a through hole, the sealing part being disposed on the piston, the position of the through hole of the sealing part corresponding to the position of the rod hole of the inner bottle, the sealing part binding the rod body and allowing the rod body to move up and down relative to the piston.

[0019] According to one embodiment of the present invention, the piston has a piston groove and a protruding arm protruding into the piston groove, the protruding arm forming the bottom air hole of the inner bottle, the piston groove and the bottom air hole communicating with each other, wherein the second one-way valve includes a first valve body and a second valve body, the first valve body including a valve top plate and a valve peripheral wall, the valve peripheral wall extending downward from the edge of the valve top plate to form a receiving cavity between the valve top plate and the valve peripheral wall, the second valve body including a valve cylinder, an extension ring and a stop arm, the valve cylinder extending downward from the inner edge of the extension ring, the stop arm extending downward obliquely from the outer edge of the extension ring, the second valve body being positioned between the valve cylinder, the extension ring and the stop arm. A valve groove is formed between the first valve body and the second valve body. The valve cylinder has a channel. The second valve body is installed in the receiving cavity of the first valve body. There is a gap between the top of the abutment arm of the second valve body and the valve peripheral wall of the first valve body. The bottom of the abutment arm is detachably abutted against the valve peripheral wall. The second one-way valve forms a valve body space between the first valve body and the second valve body. The channel of the valve cylinder communicates with the valve body space. The second one-way valve is located in the piston groove of the piston. The convex arm of the piston protrudes into the valve groove of the second valve body. The valve cylinder of the second valve body is inserted into the bottom air hole of the inner bottle. There is a gap between the valve peripheral wall of the first valve body and the piston.

[0020] According to one embodiment of the present invention, the piston has a rib in the middle of the inner wall that defines the piston groove, and the first valve body includes a plurality of hook arms. These hook arms are spaced apart from each other at the bottom of the valve peripheral wall, and these hook arms protrude from the outer surface of the valve peripheral wall. The hook arms hook the rib of the piston to reliably install the second one-way valve on the piston and create a gap between the valve peripheral wall and the piston.

[0021] According to one embodiment of the present invention, the powder spray bottle includes a third one-way valve, which is installed at the bottom of the piston to allow and prevent the gas chamber from communicating with the external environment.

[0022] According to one embodiment of the present invention, the piston includes a bottom, an outer piston ring, an inner piston ring, and a set of retaining arms. The outer piston ring, each of the retaining arms, and the inner piston ring extend downward from the bottom. The piston forms a piston cavity between the bottom, the outer piston ring, and the inner piston ring. The retaining arms are located in the piston cavity. The rod hole of the piston is formed in the bottom. The outer piston ring has at least one air inlet, which communicates with the piston cavity. The third one-way valve includes a valve ring body, an outer ring body, and an inner ring body. The outer ring extends upward from the outer edge of the valve ring, and the inner ring extends upward from the inner edge of the valve ring. The third one-way valve forms a valve chamber between the valve ring, the outer ring, and the inner ring. The retaining arm and the piston inner ring extend into the valve chamber of the third one-way valve. The outer ring is clamped between the piston outer ring and the retaining arm. The inner ring is detachably fitted to the piston inner ring. The bottom of the piston outer ring is fitted to the inner wall of the outer bottle, and there is a gap between the top of the piston outer ring and the inner wall of the outer bottle.

[0023] According to one embodiment of the present invention, the third one-way valve is elastic, and there is a gap between the bottom of the piston inner ring of the piston and the inner ring body of the third one-way valve.

[0024] According to one embodiment of the present invention, the powder spray bottle includes a fourth one-way valve, which is installed on the top cover to allow the portion of the powder outlet channel formed in the powder column to communicate with the portion formed in the elastic bellows.

[0025] According to one embodiment of the present invention, the powder spray bottle includes a fifth one-way valve, which is installed on the air inflator cap to allow communication between the bottom of the powder outlet channel and the cap channel of the cap. Attached Figure Description

[0026] Figure 1 This is a perspective view of a powder spray bottle according to a preferred embodiment of the present invention.

[0027] Figure 2 This is an exploded view of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0028] Figure 3 This is an exploded view of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0029] Figure 4 This is a three-dimensional cross-sectional view of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0030] Figure 5 This is a cross-sectional view of the powder spray bottle according to the above-described preferred embodiment of the present invention from another perspective.

[0031] Figure 6 This is a perspective view of a second one-way valve of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0032] Figure 7 This is a perspective view of the second one-way valve of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0033] Figure 8 This is an exploded view of the second one-way valve of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0034] Figure 9 This is an exploded view of the second one-way valve of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0035] Figure 10 This is a three-dimensional cross-sectional view of the second one-way valve of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0036] Figure 11 This is a perspective view of a partial structure of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0037] Figure 12 This is a perspective view of another view of the partial structure of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0038] Figure 13 This is an exploded view of a partial structure of the powder spray bottle according to the preferred embodiment of the present invention.

[0039] Figure 14 This is an exploded view of another perspective of the partial structure of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0040] Figure 15 This is a cross-sectional view of the partial structure of the powder spray bottle according to the above-described preferred embodiment of the present invention from a plan view perspective.

[0041] Figure 16 This is a cross-sectional schematic diagram of one of the powder spraying processes of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0042] Figure 17This is a cross-sectional schematic diagram of the second powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present utility model.

[0043] Figure 18 This is a cross-sectional schematic diagram of the third powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present utility model.

[0044] Figure 19 This is a cross-sectional schematic diagram of the fourth powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present utility model.

[0045] Figure 20 This is a cross-sectional schematic diagram of the fifth powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present utility model.

[0046] Figure 21 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0047] Figure 22 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0048] Figure 23 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0049] Figure 24 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0050] Figure 25 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present utility model.

[0051] Figure 26 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0052] Figure 27 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0053] Figure 28 This is a cross-sectional schematic diagram of the powder spraying process of the powder spraying bottle according to the above-described preferred embodiment of the present invention.

[0054] Figure 29 This is a perspective cross-sectional view of a modified example of the powder spray bottle according to the above-described preferred embodiment of the present invention.

[0055] Figure 30This is a perspective cross-sectional view of another modified example of the powder spray bottle according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0056] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0057] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0058] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 28 A preferred embodiment of the present invention will be disclosed and described in the following description, wherein the powder spraying bottle includes an outer bottle 10, an inner bottle 20, a first one-way valve 30, a second one-way valve 40 and a cap 50, and the powder spraying bottle has an air chamber 60.

[0059] Specifically, see the attached document. Figure 4 and Figure 5The outer bottle 10 has a bottle cavity 101, and the inner bottle 20 is movably mounted in the bottle cavity 101 of the outer bottle 10. The powder spray bottle forms the air cavity 60 between the bottom of the outer bottle 10 and the bottom of the inner bottle 20. When the inner bottle 20 moves downward, the air cavity 60 is compressed. The inner bottle 20 has a compressible air chamber 201, a powder chamber 202, a powder outlet channel 203, a top air hole 204, and a bottom air hole 205. The powder chamber 202 is used to store dry powder particles. The air chamber 201 is connected to the powder chamber 202 through the top air hole 204. A first one-way valve 30 is installed on the top of the inner bottle 20 to allow air in the air chamber 201 to flow unidirectionally to the powder chamber 202. The air chamber 202 is connected to the bottom of the powder outlet channel 203 through the bottom air hole 205. A second one-way valve 40 is installed on the bottom of the inner bottle 20 to allow air in the air chamber 202 to flow unidirectionally to the powder outlet channel 203. The side of the powder outlet channel 203 is connected to the powder chamber 202. The cap 50 has a cap channel 501. The cap 50 is installed on the top of the inner bottle 20, and the cap channel 501 of the cap 50 is connected to the top of the powder outlet channel 203 of the inner bottle 20.

[0060] During the process where the user presses the cap 50, causing the inner bottle 20 to move downwards, firstly, the air chamber 201 of the inner bottle 20 is compressed to increase the air pressure within the air chamber 201. As the air pressure within the air chamber 201 increases, the first one-way valve 30 opens the top air hole 204 of the inner bottle 20, allowing the high-pressure air in the air chamber 201 to flow unidirectionally to the powder chamber 202, thereby increasing the air pressure within the powder chamber 202, and thus increasing the air pressure within the powder chamber 202. The dry powder particles enter the powder outlet channel 203. Next, the air chamber 60 is compressed to increase the air pressure inside the air chamber 60. As the air pressure inside the air chamber 60 increases, the second one-way valve 40 opens the bottom air hole 205 of the inner bottle 20 to allow the high-pressure air in the air chamber 60 to flow unidirectionally to the powder outlet channel 203, so that the dry powder particles entering the powder outlet channel 203 are blown toward the cap 50 and sprayed to the outside through the cap channel 501 of the cap 50.

[0061] Understandably, when the user presses the cap 50 and the cap 50 drives the inner bottle 20 to move downwards, the high-pressure air in the air chamber 201 of the inner bottle 20 flows unidirectionally to the powder chamber 202, resulting in a higher air pressure in the powder chamber 202. Therefore, after the high-pressure air in the air chamber 60 flows unidirectionally to the powder outlet channel 203, the air entering the powder outlet channel 203 will not flow to the powder chamber 202. That is, the air in the air chamber 60 is only allowed to enter the powder outlet channel 203 of the inner bottle 20 and will not enter the powder chamber 202 of the inner bottle 20. Thus, each time the user presses the cap 50, the amount and spray speed of the dry powder particles sprayed from the powder spray bottle are consistent.

[0062] Continue to refer to the appendix Figures 2 to 5 The inner bottle 20 includes a bottle body 21, a top cap 22, a piston 23, a powder column 24, an air inflator cap 25, and an elastic corrugated tube 26.

[0063] Specifically, the bottle body 21 has a receiving cavity 211 and a top opening 212 and a bottom opening 213 respectively connected to the receiving cavity 211.

[0064] The top cap 22 is installed on the top of the bottle body 21 to close the top opening 212 of the bottle body 21. Specifically, in the appendix Figures 1 to 28 In this specific example of the powder spray bottle of the present invention shown, the top cover 22 has an annular slot 221, and the top of the bottle body 21 is inserted into the annular slot 221 of the top cover 22 to install the top cover 22 onto the bottle body 21.

[0065] Preferably, refer to the appendix Figure 2 and Figure 3The top cover 22 has at least one first slot 222 and at least one second slot 223. The first slot 222 extends in the circumferential direction, and the second slot 223 extends in the height direction. Correspondingly, the top of the bottle body 21 has at least one first retaining rib 214 and at least one second retaining rib 215. The first retaining rib 214 extends in the circumferential direction, and the second retaining rib 215 extends in the height direction. After the annular slot 221 of the top cover 22 is inserted into the top of the bottle body 21, the first retaining rib 214 of the bottle body 21 is engaged in the first slot 222 of the top cover 22 to prevent the top cover 22 from detaching from the bottle body 21 in the height direction, and the second retaining rib 215 of the bottle body 21 is engaged in the second slot 223 of the top cover 22 to prevent the top cover 22 from rotating relative to the bottle body 21. More preferably, the first slot 222 and the second slot 223 of the top cover 22 are arranged in a cross shape, and correspondingly, the first retaining rib 214 and the second retaining rib 215 of the bottle body 21 are arranged in a cross shape.

[0066] Preferably, the inner bottle 20 includes a sealing gasket 28 located in the annular slot 221 of the top cover 22. Pressure is applied to the top of the bottle body 21 to the sealing gasket 28, and the sealing gasket 28 prevents air leakage at the joint between the bottle body 21 and the top cover 22.

[0067] The top air vent 204 of the inner bottle 20 is provided on the top cover 22, and the first one-way valve 30 is installed on the top cover 22. Specifically, in the appendix Figures 1 to 28 In this specific example of the powder spray bottle of the present invention shown, the top cover 22 has a first top cover mounting hole 224 adjacent to the top air hole 204. The first one-way valve 30 includes a deformable first umbrella surface 31 and a first mounting post 32 extending from the first umbrella surface 31. The first mounting post 32 is inserted into the first top cover mounting hole 224 of the top cover 22. In its natural state, the first umbrella surface 31 is in contact with the bottom surface of the top cover 22 and covers the top air hole 204 of the inner bottle 20. In this way, the first one-way valve 30 is installed on the top of the inner bottle 20 and is used to allow air in the air chamber 201 of the inner bottle 20 to flow unidirectionally to the powder chamber 202.

[0068] The piston 23 is installed at the bottom of the bottle body 21 to close the bottom opening 213 of the bottle body 21. The inner bottle 20 forms the powder cavity 202 between the bottle body 21, the top cap 22, and the piston 23. Specifically, in the attached... Figures 1 to 28In this specific example of the powder spray bottle of the present invention shown, the bottom of the inner wall of the bottle body 21 is provided with a third groove 216 and a fourth groove 217. The third groove 216 extends in the circumferential direction, and the fourth groove 217 extends in the height direction. The piston 23 has a third retaining rib 231 and a fourth retaining rib 230. The third retaining rib 231 extends in the circumferential direction, and the fourth retaining rib 230 extends in the height direction. A portion of the piston 23 passes through the bottle... After the bottom opening 213 of the body 21 is inserted into the receiving cavity 211, the third retaining rib 231 of the piston 23 is engaged with the third retaining groove 216 of the bottle body 21 to prevent the piston 23 from disengaging from the bottle body 21 in the height direction. The fourth retaining rib 230 of the piston 23 is engaged with the fourth retaining groove 217 of the bottle body 21 to prevent the piston 23 from rotating relative to the bottle body 21, thereby ensuring that the piston 23 is reliably installed at the bottom of the bottle body 21. The peripheral wall of the piston 23 fits against the inner wall of the outer bottle 10, and the air cavity 60 is formed between the piston 23 and the outer bottle 10.

[0069] The bottom vent 205 of the inner bottle 20 is located on the piston 23, and the second one-way valve 40 is installed on the piston 23. Specifically, in this specific example of the powder spray bottle of this utility model, refer to the attached... Figures 2 to 15The piston 23 has a piston groove 232 and a protruding arm 233 protruding into the piston groove 232. The protruding arm 233 forms the bottom air hole 205 of the inner bottle 20. The piston groove 232 and the bottom air hole 205 of the inner bottle 20 are in communication. The second one-way valve 40 includes a first valve body 41 and a second valve body 42. The first valve body 41 includes a valve top plate 411 and a valve peripheral wall 412. The valve peripheral wall 412 extends from the valve top plate 411. The second valve body 42 extends downward from its edge to form a receiving cavity 413 between the valve top plate 411 and the valve peripheral wall 412. The second valve body 42 includes a valve cylinder 421, an extension ring 422, and a stop arm 423. The valve cylinder 421 extends downward from the inner edge of the extension ring 422, and the stop arm 423 extends obliquely downward from the outer edge of the extension ring 422. The second valve body 42 forms a receiving cavity 413 between the valve cylinder 421, the extension ring 422, and the stop arm 423. A valve groove 424 is formed, the valve cylinder 421 has a channel 4211, the second valve body 42 is installed in the receiving cavity 413 of the first valve body 41, there is a gap between the top of the abutment arm 423 of the second valve body 42 and the valve peripheral wall 412 of the first valve body 41, the bottom of the abutment arm 423 is detachably abutted against the valve peripheral wall 412, and the second one-way valve 40 forms a valve body between the first valve body 41 and the second valve body 42. Space 43, the channel 4211 of the valve cylinder 421 is connected to the valve body space 43, wherein the second one-way valve 40 is located in the piston groove 232 of the piston 23, the protruding arm 233 of the piston 23 protrudes into the valve groove 424 of the second valve body 42, the valve cylinder 421 of the second valve body 42 is inserted into the bottom air hole 205 of the inner bottle 20, and there is a gap between the valve peripheral wall 412 of the first valve body 41 and the piston 23. When the air pressure in the air chamber 60 is greater than the air pressure in the powder outlet channel 203 of the inner bottle 20, the high-pressure air in the air chamber 60 drives the bottom of the abutment arm 423 of the second valve body 42 to deform toward the protruding arm 233 and separate from the valve peripheral wall 412 of the first valve body 41, so as to allow the air chamber 60 and the powder outlet channel 203 of the inner bottle 20 to communicate, thereby allowing the high-pressure air in the air chamber 60 to enter the powder outlet channel 203 of the inner bottle 20. When the air pressure in the air chamber 60 returns to the same level as the air pressure in the powder outlet channel 203 of the inner bottle 20, the bottom of the abutment arm 423 of the second valve body 42 deforms toward the direction away from the protruding arm 233 and abuts against the valve peripheral wall 412 of the first valve body 41, so as to prevent the air chamber 60 and the powder outlet channel 203 of the inner bottle 20 from communicating.

[0070] Preferably, the second valve body 42 includes a plurality of bosses 425, which are spaced apart from each other on the top of the extension ring 422. After the second valve body 42 is installed in the receiving cavity 413 of the first valve body 41, the bosses 425 of the second valve body 42 can ensure that the second one-way valve 40 forms the valve body space 43 between the first valve body 41 and the second valve body 42.

[0071] Preferably, the piston 23 has a raised rib 234 in the middle of the inner wall that defines the piston groove 232. The first valve body 41 includes a plurality of hook arms 414, which are spaced apart from each other at the bottom of the valve peripheral wall 412 and protrude from the outer surface of the valve peripheral wall 412. The hook arms 414 hook the raised rib 234 of the piston 23 to reliably install the second one-way valve 40 on the piston 23 and ensure that there is a gap between the valve peripheral wall 412 of the first valve body 41 and the piston 23.

[0072] Reference Appendix Figure 4 and Figure 5 The top and bottom of the powder column 24 are respectively connected to the top cover 22 and the piston 23. A portion of the powder outlet channel 203 of the inner bottle 20 is formed in the powder column 24, and the portion of the powder outlet channel 203 formed in the powder column 24 is defined as a channel bottom section 2031. Specifically, in the appendix Figures 1 to 28 In this specific example of the powder spray bottle of the present invention, the top and bottom of the powder column 24 are respectively mounted on the top cover 22 and the piston 23, such that the top and bottom of the powder column 24 are respectively connected to the top cover 22 and the piston 23. Specifically, the top cover 22 has a first top cover insert 225, which is inserted into the top of the column hole 241 of the powder column 24 to mount the top of the powder column 24 to the top cover 22. The piston 23 has a piston insert 235, which is inserted into the bottom of the column hole 241 of the powder column 24 to mount the bottom of the powder column 24 to the piston 23.

[0073] Preferably, the bottom of the powder column 24 has at least one powder column notch 242, and the piston arm 235 of the piston 23 has at least one arm notch 2351. The positions of the powder column notch 242 of the powder column 24 and the positions of the arm notch 2351 of the piston arm 235 correspond, so that the side of the bottom section 2031 of the powder outlet channel 203 of the inner bottle 20 is connected to the powder cavity 202. More preferably, the bottom of the powder column 24 has two powder column notches 242, and the piston arm 235 of the piston 23 has two arm notches 2351. The positions of each powder column notch 242 of the powder column 24 correspond to the positions of each arm notch 2351 of the piston arm 235.

[0074] The air inflator cap 25 is movably mounted on the top cap 22. The air chamber 201 of the inner bottle 20 is formed between the air inflator cap 25 and the top cap 22. When the air inflator cap 25 moves downward relative to the top cap 22, the air chamber 201 is compressed. Specifically, in the attached... Figures 1 to 28 In this specific example of the powder spray bottle of the present invention, there is a gap between the top of the periphery of the air inflator cap 25 and the inner wall of the top cap 22. The bottom of the periphery of the air inflator cap 25 is detachably attached to the inner wall of the top cap 22. When the air pressure in the air chamber 201 of the inner bottle 20 is higher than the external air pressure, the bottom of the periphery of the air inflator cap 25 is tightly attached to the inner wall of the top cap 22 to prevent air leakage at the joint between the top cap 22 and the air inflator cap 25. When the air pressure in the air chamber 201 of the inner bottle 20 is lower than the external air pressure, external gas is allowed to enter the air chamber 201 of the inner bottle 20 through the joint between the top cap 22 and the air inflator cap 25, so that the air pressure in the air chamber 201 and the external environment can be restored to equilibrium.

[0075] The top and bottom of the flexible bellows 26 are respectively installed on the air inflator cap 25 and the top cap 22. Another portion of the powder outlet channel 203 of the inner bottle 20 is formed in the flexible bellows 26, and this portion of the powder outlet channel 203 formed in the flexible bellows 26 is defined as a channel top section 2032. Specifically, in the attached... Figures 1 to 28 In this specific example of the powder spray bottle of the present invention shown, the top cover 22 has a second top cover insert 226, which is inserted into the bottom of the cavity 261 of the elastic bellows 26 to mount the bottom of the elastic bellows 26 to the top cover 22. The air cap 25 has a first air cap insert 251, which is inserted into the top of the cavity 261 of the elastic bellows 26 to mount the top of the elastic bellows 26 to the air cap 25.

[0076] Preferably, the air cap 25 has a second air cap insert 252, which is inserted into the cap channel 501 of the cap 50 to install the cap 50 on the air cap 25, thereby installing the cap 50 on the top of the inner bottle 20.

[0077] In the appendix Figures 1 to 28 In this specific example of the powder spray bottle of the present invention, the top and bottom of the powder column 24 are respectively installed in the middle of the top cover 22 and the middle of the piston 23, so that the powder cavity 202 of the inner bottle 20 surrounds the powder outlet channel 203. In this way, it is beneficial for the dry powder particles stored in the powder cavity 202 of the inner bottle 20 to enter the powder outlet channel 203.

[0078] Preferably, the piston 23 has a funnel-shaped structure, and the upper surface of the piston 23 extends upward at an angle from the center to the surrounding area. In this way, the side of the powder outlet channel 203 of the inner bottle 20 can be connected to the powder cavity 202 at the lowest point of the powder cavity 202 of the inner bottle 20, so that the dry powder particles stored in the powder cavity 202 of the inner bottle 20 can enter the powder outlet channel 203.

[0079] Further, see attached document. Figures 2 to 5 , Figures 13 to 15 The powder spray bottle includes a third one-way valve 70, which is installed at the bottom of the piston 23. The third one-way valve 70 is used to allow and prevent the air chamber 60 from communicating with the external environment. When the air pressure inside the air chamber 60 is higher than the external air pressure, the third one-way valve 70 prevents the air chamber 60 from communicating with the external environment. When the air pressure inside the air chamber 60 is lower than the external air pressure, the third one-way valve 70 allows the air chamber 60 to communicate with the external environment, so that air from the external environment can enter the air chamber 60, and the air pressure inside the air chamber 60 and the air pressure of the external environment can be restored to balance.

[0080] Specifically, the piston 23 includes a bottom 236, an outer piston ring 237, an inner piston ring 238, and a set of retaining arms 239. The outer piston ring 237, the inner piston ring 238, and each of the retaining arms 239 extend downward from the bottom 236. The piston 23 forms a piston cavity 2310 between the bottom 236, the outer piston ring 237, and the inner piston ring 238. The retaining arms 239 are located in the piston cavity 2310. The outer piston ring 237 has at least one air inlet 2371, which communicates with the piston cavity 2310. The third one-way valve 70 includes a valve ring body 71, an outer ring body 72, and an inner ring body 73. The outer ring body 72 extends upward from the outer edge of the valve ring body 71, and the inner ring body 73 extends upward from the inner edge of the valve ring body 71. The third one-way valve 70 forms a valve cavity 74 between the valve ring body 71, the outer ring body 72, and the inner ring body 73. The retaining arm 239 and the piston inner ring 238 of the piston 23 extend into the valve cavity 74 of the third one-way valve 70. The outer ring body 72 is clamped between the piston outer ring 237 and the retaining arm 239. The inner ring body 73 is detachably attached to the piston inner ring 238. The bottom of the piston outer ring 237 is attached to the inner wall of the outer bottle 10, and there is a gap between the top of the piston outer ring 237 and the inner wall of the outer bottle 10. When the air pressure in the air chamber 60 is lower than the air pressure in the valve chamber 74 of the third one-way valve 70 (the air pressure in the valve chamber 74 is the same as the air pressure of the external environment), the air in the valve chamber 74 drives the inner ring body 73 and the piston inner ring 238 to separate and flow into the air chamber 60. When the air pressure in the air chamber 60 and the air pressure in the valve chamber 74 of the third one-way valve 70 are restored to equilibrium, the inner ring body 73 and the piston inner ring 238 are put together to prevent the air chamber 60 from communicating with the external environment.

[0081] In the appendix Figures 1 to 28 In this specific example of the powder spray bottle of the present invention, the third one-way valve 70 is elastic, and there is a gap between the bottom of the piston inner ring 238 of the piston 23 and the inner ring body 73 of the third one-way valve 70. When the air pressure in the air chamber 60 is lower than the air pressure in the valve chamber 74 of the third one-way valve 70, the air in the valve chamber 74 drives the inner ring body 73 to deform inward and separate from the piston inner ring 238. When the air pressure in the air chamber 60 and the air pressure in the valve chamber 74 of the third one-way valve 70 return to equilibrium, the inner ring body 73 deforms inward and resets, so that the inner ring body 73 fits against the piston inner ring 238, thereby preventing the air chamber 60 from communicating with the external environment.

[0082] Further, see Appendix Figure 4 , Figure 14 and Figure 15 The bottom of the inner bottle 20 has at least one rod hole 206. (See attached...) Figures 1 to 28 In this specific example of the powder spray bottle of the present invention shown, the rod hole 206 of the inner bottle 20 is located at the stopper bottom 236 of the piston 23. The powder spray bottle includes at least one powder-tapping rod 80 and at least one reset element 90. The powder-tapping rod 80 includes a powder-tapping head 81 and a rod body 82 extending downward from the powder-tapping head 81. The powder-tapping head 81 is located in the powder cavity 202 of the inner bottle 20. The bottom of the rod body 82 extends through the rod hole 206 of the inner bottle 20 to the air cavity 60. The powder-tapping rod 80 is configured to remain stationary relative to the outer bottle 10. The top of the reset element 90 abuts against the bottom of the piston 23 of the inner bottle 20, and the bottom of the reset element 90 is configured to remain stationary relative to the outer bottle 10.

[0083] When the user presses the cap 50, causing the inner bottle 20 to move downwards, the piston 23 of the inner bottle 20 moves away from the powder-tapping head 81 and compresses the reset element 90 downwards. This causes the reset element 90 to be compressed and deformed, accumulating elastic potential energy. When the user releases the cap 50, the reset element 90 pushes the inner bottle 20 back to its initial state. The piston 23 of the inner bottle 20 moves closer to the powder-tapping head 81, causing the powder-tapping head 81 to tap the upper surface of the piston 20 to prevent the dry powder particles from clumping.

[0084] Understandably, when the user presses the cap 50, causing the piston 23 of the inner bottle 20 to move away from the powder applicator 81, a portion of the dry powder particles stored in the powder chamber 202 of the inner bottle 20 will enter the space between the piston 23 and the powder applicator 81. Thus, when the user releases the cap 50, causing the piston 23 of the inner bottle 20 to move closer to the powder applicator 81, the piston 23 and the powder applicator 81 can generate impact forces on the opposite sides of this portion of dry powder particles to prevent the dry powder particles from clumping.

[0085] Preferably, in the appendix Figures 1 to 28In this specific example of the powder spraying bottle of the present invention, the bottom of the inner bottle 20 has two rod holes 206, which are located on opposite sides of the powder column 24. The number of the powder-patting rods 80 and the number of the reset elements 90 of the powder spraying bottle are two. Thus, during the alternating pressing and releasing of the head cap 50, on the one hand, the piston 23 of the inner bottle 20 can be subjected to force evenly, preventing the piston 23 from tilting. On the other hand, the two reset elements 90, after being compressed, can provide sufficient restoring force during the process of returning to the initial state to push the piston 23 to rise quickly. In this way, a strong impact force can be provided between the powder-patting head 81 and the piston 23 to improve the powder-patting effect.

[0086] Reference Appendix Figures 2 to 5 The powder spray bottle further includes an assembly 100 disposed at the bottom of the cavity 101 of the outer bottle 10. The bottom of the rod 82 of the powder-spraying rod 80 is inserted into the assembly 100, and the bottom of the reset element 90 abuts against the assembly 100. Thus, the bottoms of the powder-spraying rod 80 and the reset element 90 are configured to remain stationary relative to the outer bottle 10. Optionally, in other examples of the powder spray bottle of this invention, the bottom of the rod 82 of the powder-spraying rod 80 may also be directly inserted into the bottom of the outer bottle 10, so that the powder-spraying rod 80 is configured to remain stationary relative to the outer bottle 10. Correspondingly, the bottom of the reset element 90 abuts against the bottom of the outer bottle 10, so that the reset element 90 is configured to remain stationary relative to the outer bottle 10.

[0087] Preferably, the reset element 90 is a compression spring that is fitted onto the rod body 82 of the powder-applying rod 80. In this way, the rod body 82 can limit the deformation direction of the reset element 90 to the height direction, ensuring that the opposite ends of the reset element 90 reliably abut against the piston 23 and the assembly 100.

[0088] Preferably, the assembly 100 has a clearance groove 1001 for avoiding the bottom of the piston 23, so that the inner bottle 20 has a greater range of movement.

[0089] Reference Appendix Figure 2 , Figure 13 and Figure 15The inner bottle 20 further includes at least one sealing part 27, which has a through hole 271. The sealing part 27 is disposed on the piston 23. The position of the through hole 271 of the sealing part 27 corresponds to the position of the rod hole 206 of the inner bottle 20. The bottom of the rod body 82 of the powder spraying rod 80 is inserted into the assembly 100 after passing through the through hole 271 of the sealing part 27 and the rod hole 206 of the inner bottle 20 in sequence. The sealing part 27 binds the rod body 82 and allows the rod body 82 to move up and down relative to the piston 23. In this way, the powder spraying bottle can prevent the dry powder particles stored in the powder cavity 202 of the inner bottle 20 from entering the air cavity 60 through the rod hole 206 of the inner bottle 20, thereby avoiding powder leakage. In a specific example of this utility model, the sealing part 27 can be integrally combined with the piston 23 through a two-color injection molding process, so as to reliably set the sealing part 27 on the piston 23.

[0090] When the cap 50 of the powder spray bottle is not pressed, the powder tapping rod 80 prevents the powder cavity 202 of the inner bottle 20 from connecting with the powder outlet channel 203. That is, the powder cavity 202 of the inner bottle 20 is a sealed space, and humid air is prevented from entering the powder cavity 202 of the inner bottle 20, so as to avoid the dry powder particles stored in the powder cavity 202 of the inner bottle 20 from clumping due to contact with humid air.

[0091] Specifically, the powder applicator 80 includes a shielding plate 83, which is disposed inside the powder applicator head 81. The shielding plate 83 has a contact surface 831, the shape of which is consistent with the outer surface of the powder column 24. For example, in the attached... Figures 1 to 28In this specific example of the powder spray bottle of the present invention, the powder column 24 is a cylinder with an outwardly convex arc surface. Correspondingly, the contact surface 831 of the shielding plate 83 is a concave arc surface, and the curvature of the contact surface 831 is consistent with the curvature of the outer surface of the powder column 24, so that the contact surface 831 of the shielding plate 83 can be attached to the outer surface of the powder column 24. When the cap 50 is not pressed, the shield 83 blocks the powder column notch 242 of the powder column 24, thereby preventing the powder cavity 202 of the inner bottle 20 from connecting with the powder outlet channel 203. When the user presses the cap 50 and drives the inner bottle 20 to move downward, as the powder column 24 moves downward, the powder column notch 242 of the powder column 24 is exposed by the shield 83, thereby connecting the powder cavity 202 of the inner bottle 20 with the powder outlet channel 203, and the dry powder particles stored in the powder cavity 202 can enter the powder outlet channel 203. It is understood that after the reset element 90 pushes the inner bottle 20 to reset, the shielding plate 83 of the powder tapping rod 80 once again blocks the powder column notch 242 of the powder column 24 to prevent the powder cavity 202 of the inner bottle 20 from connecting with the powder outlet channel 203, so as to prevent humid air from entering the powder cavity 202 and thus prevent the dry powder particles from clumping.

[0092] Reference Appendix Figure 2 The assembly 100 has at least one insertion hole 1002 and a limiting groove 1003 provided on the hole wall of the assembly 100. The bottom of the rod body 82 of the powder applicator 80 has a limiting protrusion 821. The bottom of the rod body 82 is inserted into the assembly 100 such that the limiting protrusion 821 protrudes into the limiting groove 1003 of the assembly 100, so as to ensure that the contact surface 831 of the shielding plate 83 is in contact with the outer surface of the powder column 24.

[0093] Further, please refer to the appendix. Figures 2 to 5The powder spray bottle includes a fourth one-way valve 110, which is installed on the top cover 22 to allow communication between the bottom section 2031 and the top section 2032 of the powder outlet channel 203. When the fourth one-way valve 110 allows communication between the bottom section 2031 and the top section 2032 of the powder outlet channel 203, the dry powder particles are introduced from the bottom section 2031 into the top section 2032. When the fourth one-way valve 110 prevents communication between the bottom section 2031 and the top section 2032 of the powder outlet channel 203, the bottom section 2031 of the powder outlet channel 203 becomes a sealed space, preventing humid air from entering the bottom section 2031 of the powder outlet channel 203, thus avoiding clumping of the dry powder particles in the bottom section 2031 of the powder outlet channel 203 due to contact with humid air.

[0094] Specifically, see the attached document. Figures 2 to 5 The top cover 22 has a second top cover mounting hole 227 and an adjacent first powder outlet hole 228. The fourth one-way valve 110 includes a deformable second umbrella surface 1101 and a second mounting post 1102 extending from the second umbrella surface 1101. The second mounting post 1102 is inserted into the second top cover mounting hole 227 of the top cover 22. In its natural state, the second umbrella surface 1101 is in contact with the top surface of the top cover 22 and covers the first powder outlet hole 228 of the top cover 22. In this way, the fourth one-way valve 110 allows air in the bottom section 2031 of the powder outlet channel 203 to flow unidirectionally to the top section 2032 of the powder outlet channel 203.

[0095] Further, please refer to the appendix. Figures 2 to 5 The powder spray bottle includes a fifth one-way valve 120, which is installed on the air inflator cap 25 to allow communication between the top section 2032 of the powder outlet channel 203 and the cap channel 501 of the cap 50. When the fifth one-way valve 120 allows communication between the top section 2032 of the powder outlet channel 203 and the cap channel 501 of the cap 50, the dry powder particles are allowed to enter the cap channel 501 of the cap 50. When the fifth one-way valve 120 prevents communication between the top section 2032 of the powder outlet channel 203 and the cap channel 501 of the cap 50, the powder outlet channel 203 becomes a sealed space, preventing humid air from entering the powder outlet channel 203 to avoid clumping of the dry powder particles in the powder outlet channel 203 due to contact with humid air.

[0096] In the appendix Figures 1 to 28In this specific example of the powder spray bottle of the present invention shown, the air inflator cap 25 has an air inflator mounting hole 253 and an adjacent second powder outlet 254. The fifth one-way valve 120 includes a deformable third umbrella surface 1201 and a third mounting post 1202 extending from the third umbrella surface 1201. The third mounting post 1202 is inserted into the air inflator cap 253. In its natural state, the third umbrella surface 1201 conforms to the top surface of the air inflator cap 25 and covers the second powder outlet 254 of the air inflator cap 25. In this way, the fifth one-way valve 120 allows air in the top section 2032 of the powder outlet channel 203 to flow unidirectionally to the cap channel 501 of the cap 50.

[0097] Further, see Appendix Figures 1 to 5 The powder spray bottle includes a cover 130, which is detachably mounted on the top of the outer bottle 10, wherein when the cover 130 is mounted on the top of the outer bottle 10, the cover 130 covers the cap 50, and when the cover 130 is detached from the top of the outer bottle 10, the cap 50 is exposed so that the cap 50 can be pressed.

[0098] Continue to refer to the appendix Figures 1 to 5 The outer bottle 10 includes a bottle body 11 and a bottle bottom 12. The bottle bottom 12 is installed at the bottom of the bottle body 11 to form the bottle cavity 101 between the bottle body 11 and the bottle bottom 12. Specifically, the bottom of the bottle body 11 has at least one fifth retaining rib 111 and at least one sixth retaining rib 112. The fifth retaining rib 111 extends in the circumferential direction, and the sixth retaining rib 112 extends in the height direction. The bottle bottom 12 has at least one fifth retaining groove 121 and at least one sixth retaining groove 122. The fifth retaining groove 121 extends in the circumferential direction, and the sixth retaining groove 122 extends in the height direction. When the bottle bottom 12 is installed on the bottom of the bottle body 11, the fifth retaining rib 111 of the bottle body 11 is engaged with the fifth retaining groove 121 of the bottle bottom 12 to prevent the bottle bottom 12 from detaching from the bottle body 11 in the height direction. The sixth retaining rib 112 of the bottle body 11 is engaged with the sixth retaining groove 122 of the bottle bottom 12 to prevent the bottle bottom 12 from rotating relative to the bottle body 11.

[0099] Further, see Appendix Figures 2 to 4The bottle body 11 has a guide groove 113, and the cap 50 has a guide strip 51. The guide strip 51 extends along the height direction. The cap 50 is movably mounted on the top of the bottle body 11. The guide strip 51 of the cap 50 protrudes into the guide groove 113 of the bottle body 11. The guide groove 113 of the bottle body 11 and the guide strip 51 of the cap 50 cooperate with each other to prevent the cap 50 from rotating relative to the bottle body 11.

[0100] Appendix Figures 16 to 27 The process of using the powder spray bottle of this utility model is shown below.

[0101] After the cap 130 is separated from the top of the outer bottle 10, the head cap 50 is exposed. While holding the outer bottle 10, the user can press down on the head cap 50 with their thumb. The head cap 50 drives the air inflator cap 25 downwards, compressing the air chamber 201 of the inner bottle 20, increasing the air pressure within the air chamber 201. The first one-way valve 30 allows the high-pressure air in the air chamber 201 to flow unidirectionally to the powder chamber 202. Simultaneously, the top section 2032 of the powder outlet channel 203 is compressed, increasing the air pressure within the top section 2032 of the powder outlet channel 203. The fifth one-way valve 120 allows the high-pressure air in the top section 2032 of the powder outlet channel 203 to flow unidirectionally to the head cap channel 501 of the head cap 50, thereby ejecting the dry powder particles stored in the top section 2032 of the powder outlet channel 203 to the outside. As the cap 50 continues to move downwards, the cap 50 drives the top cover 22, the bottle body 21, the piston 23, and the powder column 24 to move downwards via the air inflator cap 25. During this process, firstly, the powder column notch 242 of the powder column 24 exposes the shield 83 of the powder applicator 80, thereby connecting the powder chamber 202 of the inner bottle 20 with the powder outlet channel 203. Due to the higher air pressure inside the powder chamber 202, the dry powder particles stored in the powder chamber 202 enter the bottom section 2031 of the powder outlet channel 203. Secondly, the downward movement of the piston 23 causes the reset element 90 to be... Thirdly, the downward movement of the piston 23 compresses the air chamber 60, increasing the air pressure within it. The second one-way valve 40 allows the high-pressure air in the air chamber 60 to flow unidirectionally to the bottom section 2031 of the powder outlet channel 203 of the inner bottle 20, further increasing the air pressure within the bottom section 2031. The fourth one-way valve 110 allows the air in the bottom section 2031 of the powder outlet channel 203 to flow unidirectionally to the top section 2032, and finally exits through the cap channel 501 of the cap 50. In other words, the powder spray bottle can spray out dry powder particles throughout the entire process of the user pressing the cap 50.

[0102] When the user releases pressure on the cap 50, firstly, the elastic bellows 26 pushes the air inflator 25 upwards during the process of returning to its initial state. This creates a negative pressure environment at the top section 2302 of the powder outlet channel 203, causing the fifth one-way valve 120 to close the second powder outlet 254 of the air inflator 25. Consequently, the fifth one-way valve 120 prevents the cap channel 501 of the cap 50 from connecting with the top section 2032 of the powder outlet channel 203, and the air chamber 201 forms... A negative pressure environment is created, causing the first one-way valve 30 to close the top air hole 204 of the inner bottle 20, preventing the dry powder particles stored in the powder chamber 202 from entering the air chamber 201. External air enters the air chamber 201 through the junction of the top cover 22 and the air inflator 25, restoring the air pressure in the air chamber 201 to balance with the air pressure in the powder chamber 202. Secondly, the reset element 90 pushes the piston 23, the bottle body 21, the top cover 22, and the powder column 24 upwards. When the piston 23 and the powder-tapping head 81 of the powder-tapping rod 80 come into contact, the piston 23 and the powder-tapping head 81 generate an impact force on opposite sides of a portion of the dry powder particles to prevent the dry powder particles from clumping. The fourth one-way valve 110 closes the first powder outlet 228 of the top cover 22 to prevent the top section 2032 and the bottom section 2031 of the powder outlet channel 203 from communicating. The shielding plate 83 of the powder-tapping rod 80 blocks the powder column notch 24 of the powder column 24. 2. To prevent the powder chamber 202 and the bottom section 2031 of the powder outlet channel 203 from communicating, the air chamber 60 forms a negative pressure environment. Air from the external environment can enter the piston chamber 2310 through the air inlet 2371 of the piston outer ring 237, and drive the inner ring 73 of the third one-way valve 70 to deform inward and enter the air chamber 60. After the air pressure in the air chamber 60 and the air pressure in the external environment are restored to balance, the inner ring 73 returns to its initial state, so that the air chamber 60 forms a sealed environment.

[0103] It is understood that after the user has finished using the powder spray bottle, the cover 130 is installed on the top of the outer bottle 10 to allow the cover 130 to cover the cap 50.

[0104] Appendix Figure 29 A modified example of the powder spray bottle of this invention is shown, with reference to the attached diagram. Figures 1 to 28 Unlike the powder spray bottle shown, the attached... Figure 29In this specific example of the powder spray bottle shown, the outer bottle 10 includes the bottle body 11, the bottle bottom 12, and a bottle neck 13. The bottle bottom 12 is mounted on the bottom of the bottle body 11, and the bottle neck 13 is mounted on the top of the bottle body 11 to form the bottle cavity 101 between the bottle body 11, the bottle bottom 12, and the bottle neck 13. The bottle neck 13 surrounds the top cap 22, and the top cap 50 is movably mounted on the bottle neck 13.

[0105] Appendix Figure 30 A modified example of the powder spray bottle of this invention is shown, with reference to the attached diagram. Figures 1 to 28 Unlike the powder spray bottle shown, the attached... Figure 30 In this specific example of the powder spray bottle shown, the inner bottle 20 uses a deformable sealing tube 29 and an elastomer 210 instead of the elastic bellows 26. Specifically, the top and bottom of the sealing tube 29 are respectively attached to the air inflator cap 25 and the top cap 22, a portion of the powder dispensing channel 203 is formed in the sealing tube 29, and the elastomer 210 is configured to remain stationary at the top relative to the air inflator cap 25 and at the bottom relative to the top cap 22. When the user presses down on the cap 50, causing the air inflator cap 25 to move downward relative to the top cap 22, on the one hand, the portion of the powder dispensing channel 203 formed in the sealing tube 29 is compressed, and on the other hand, the elastomer 210 is compressed and deformed to accumulate elastic potential energy. When the user releases the cap 50, the elastomer 210 pushes the air inflator cap 25 and the cap 50 upward during the process of returning to the initial state, and causes the sealing tube 29 to return to its initial state.

[0106] In the appendix Figure 30 In this specific example of the powder spray bottle of the present invention, the elastomer 210 surrounds the outside of the sealing tube 29. The top of the elastomer 210 abuts against the top edge 291 of the sealing tube 29, so that the top of the elastomer 210 is positioned stationary relative to the air inflator cap 25. The bottom of the elastomer 210 abuts against the bottom edge 292 of the sealing tube 29, so that the bottom of the elastomer 210 is positioned stationary relative to the top cap 22. With this structure, the elastomer 210 allows the opposite ends of the sealing tube 29 to be reliably mounted to the air inflator cap 25 and the bottom cap 22, respectively. Preferably, the elastomer 210 is a plastic spring.

[0107] 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, include: First check valve; A second check valve; A cap, wherein the cap has a cap passage; An outer bottle, wherein the outer bottle has a cavity; and An inner bottle is movably mounted on the cavity of an outer bottle. A powder spray bottle forms a compressible air cavity between the bottom of the outer bottle and the bottom of the inner bottle. The inner bottle has a compressible air chamber, a powder cavity, a powder outlet channel, a top air hole, and a bottom air hole. The air chamber is connected to the powder cavity through the top air hole, and the air cavity is connected to the bottom of the powder outlet channel through the bottom air hole. The side of the powder outlet channel is connected to the powder cavity. A first one-way valve is installed on the top of the inner bottle to allow air in the air chamber to flow unidirectionally to the powder cavity. A second one-way valve is installed on the bottom of the inner bottle to allow air in the air cavity to flow unidirectionally to the powder outlet channel. A cap is installed on the top of the inner bottle, and the cap channel of the cap is connected to the top of the powder outlet channel of the inner bottle.

2. The powder spray bottle according to claim 1, wherein the inner bottle comprises a bottle body, a top cap, a piston, a powder column, an air inflator cap, and an elastic bellows, the top cap and the piston 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, the top and bottom of the powder column are respectively connected to the top cap and the piston, a portion of the powder outlet channel is formed in the powder column, the air inflator cap is movably installed on the top cap, the air chamber is formed between the air inflator cap and the top cap, the top and bottom of the elastic bellows are respectively installed on the air inflator cap and the top cap, another portion of the powder outlet channel is formed in the elastic bellows, the top air hole is formed in the top cap, the first one-way valve is installed in the top cap, the bottom air hole is formed in the piston, the second one-way valve is installed in the piston, wherein the peripheral wall of the piston is fitted to the inner wall of the outer bottle, and the air cavity is formed between the piston of the inner bottle and the outer bottle.

3. The powder spray bottle according to claim 1, wherein the inner bottle comprises a bottle body, a top cap, a piston, a powder column, an air inflator cap, a deformable sealing tube, and an elastic body; the top cap and the piston are respectively installed on the top and bottom of the bottle body to form the powder chamber between the bottle body, the top cap, and the piston; the top and bottom of the powder column are respectively connected to the top cap and the piston; a portion of the powder outlet channel is formed in the powder column; the air inflator cap is movably installed on the top cap; and the air chamber is formed in the air inflator cap and the top cap. Between them, the top and bottom of the sealing tube are respectively installed on the air inflator cap and the top cap, another part of the powder outlet channel is formed in the sealing tube, the elastomer is configured to keep the top fixed relative to the air inflator cap and the bottom fixed relative to the top cap, the top air hole is formed in the top cap, the first one-way valve is installed in the top cap, the bottom air hole is formed in the piston, the second one-way valve is installed in the piston, wherein the peripheral wall of the piston is attached to the inner wall of the outer bottle, and the air chamber is formed between the piston of the inner bottle and the outer bottle.

4. The powder spray bottle of claim 3, wherein the elastomer surrounds the outside of the sealing tube, the top of the elastomer abuts against the top edge of the sealing tube such that the top of the elastomer is set to remain stationary relative to the air inflator cap, and the bottom of the elastomer abuts against the bottom edge of the sealing tube such that the bottom of the elastomer is set to remain stationary relative to the top cap.

5. The powder spray bottle according to claim 2, wherein the top and bottom of the powder column are respectively installed in the middle of the top cover and the middle of the piston, so that the powder chamber surrounds the powder outlet channel.

6. The powder spraying bottle according to claim 2 or 3, wherein the bottom of the inner bottle has at least one rod hole, wherein the powder spraying bottle includes at least one powder-tapping rod and at least one reset element, the powder-tapping rod includes a powder-tapping head and a rod extending downward from the powder-tapping head, the powder-tapping head being located in the powder cavity of the inner bottle, the bottom of the rod extending through the rod hole to the air cavity, and the powder-tapping rod remaining stationary relative to the outer bottle, the top of the reset element abutting against the bottom of the inner bottle, and the bottom of the reset element remaining stationary relative to the outer bottle.

7. The powder spraying bottle according to claim 5, wherein the bottom of the inner bottle has two rod holes, the two rod holes are located on opposite sides of the powder column, wherein the powder spraying bottle includes two powder-tapping rods and two reset elements, each of the powder-tapping rods includes a powder-tapping head and a rod extending downward from the powder-tapping head, the powder-tapping head is located in the powder cavity of the inner bottle, the bottom of the rod extends through the rod hole to the air cavity, and the powder-tapping rod remains stationary relative to the outer bottle, the top of the reset element abuts against the bottom of the inner bottle, and the bottom of the reset element remains stationary relative to the outer bottle.

8. The powder spraying bottle according to claim 6, wherein the powder spraying bottle includes an assembly disposed at the bottom of the bottle cavity of the outer bottle, the bottom of the rod is inserted into the assembly, and the bottom of the reset element abuts against the assembly, thereby keeping the powder spraying rod and the bottom of the reset element stationary relative to the outer bottle.

9. The powder spray bottle according to claim 6, wherein the bottom of the rod is inserted into the bottom of the outer bottle, and the bottom of the reset element abuts against the bottom of the outer bottle, so that the powder spraying rod and the bottom of the reset element remain stationary relative to the outer bottle.

10. The powder spray bottle according to claim 6, wherein the powder-spraying rod includes a shielding plate disposed inside the powder-spraying head, the shielding plate having a contact surface whose surface shape is consistent with the surface shape of the outer surface of the powder column, the contact surface of the shielding plate being slidably attached to the outer surface of the powder column for allowing and preventing the powder cavity from communicating with the powder outlet channel.

11. The powder spray bottle according to claim 6, wherein the inner bottle includes at least one sealing portion having a through hole, the sealing portion being disposed on the piston, the position of the through hole of the sealing portion corresponding to the position of the rod hole of the inner bottle, the sealing portion restraining the rod and allowing the rod to move up and down relative to the piston.

12. The powder spray bottle according to claim 2, wherein the piston has a piston groove and a protruding arm protruding into the piston groove, the protruding arm forming the bottom vent of the inner bottle, the piston groove and the bottom vent communicating, wherein the second one-way valve includes a first valve body and a second valve body, the first valve body including a valve top plate and a valve peripheral wall, the valve peripheral wall extending downward from the edge of the valve top plate to form a receiving cavity between the valve top plate and the valve peripheral wall, the second valve body including a valve cylinder, an extension ring and a stop arm, the valve cylinder extending downward from the inner edge of the extension ring, the stop arm extending obliquely downward from the outer edge of the extension ring, the second valve body being in the valve cylinder, the extension ring and the stop arm A valve groove is formed between the arms, the valve cylinder has a channel, the second valve body is installed in the receiving cavity of the first valve body, there is a gap between the top of the abutment arm of the second valve body and the valve peripheral wall of the first valve body, the bottom of the abutment arm is detachably abutted against the valve peripheral wall, the second one-way valve forms a valve body space between the first valve body and the second valve body, the channel of the valve cylinder communicates with the valve body space, the second one-way valve is located in the piston groove of the piston, the convex arm of the piston protrudes into the valve groove of the second valve body, the valve cylinder of the second valve body is inserted into the bottom air hole of the inner bottle, and there is a gap between the valve peripheral wall of the first valve body and the piston.

13. The powder spray bottle according to claim 12, wherein the piston has a rib in the middle of the inner wall defining the piston groove, the first valve body includes a plurality of hook arms, the hook arms being spaced apart from each other at the bottom of the valve peripheral wall, and the hook arms protruding from the outer surface of the valve peripheral wall, wherein the hook arms hook the rib of the piston to reliably install the second one-way valve on the piston and create a gap between the valve peripheral wall and the piston.

14. The powder spraying bottle according to claim 6, wherein the powder spraying bottle includes a third one-way valve, the third one-way valve being installed at the bottom of the piston for allowing and preventing the gas chamber from communicating with the external environment.

15. The powder spray bottle according to claim 14, wherein the piston comprises a stopper bottom, a piston outer ring, a piston inner ring, and a set of retaining arms, the piston outer ring, each of the retaining arms, and the piston inner ring extending downward from the stopper bottom, the piston forming a piston cavity between the stopper bottom, the piston outer ring, and the piston inner ring, the retaining arms being located in the piston cavity, the piston rod hole being formed in the stopper bottom, the piston outer ring having at least one air inlet communicating with the piston cavity, wherein the third one-way valve comprises a valve ring body, an outer ring body, and an inner... The valve ring has an outer ring extending upward from its outer edge and an inner ring extending upward from its inner edge. A third one-way valve forms a valve chamber between the valve ring, the outer ring, and the inner ring. A retaining arm and the inner piston ring extend into the valve chamber of the third one-way valve. The outer ring is held between the outer piston ring and the retaining arm. The inner ring is detachably fitted to the inner piston ring. The bottom of the outer piston ring is fitted to the inner wall of the outer bottle, and a gap exists between the top of the outer piston ring and the inner wall of the outer bottle.

16. The powder spray bottle according to claim 15, wherein the third one-way valve is resilient, and there is a gap between the bottom of the piston inner ring of the piston and the inner ring body of the third one-way valve.

17. The powder spray bottle of claim 2, wherein the powder spray bottle includes a fourth one-way valve, the fourth one-way valve being mounted on the top cover for allowing the portion of the powder outlet channel formed in the powder column to communicate with the portion formed in the resilient bellows.

18. The powder spray bottle of claim 17, wherein the powder spray bottle includes a fifth one-way valve, the fifth one-way valve being installed on the air inflator cap for allowing communication between the bottom of the powder outlet channel and the cap channel of the cap.

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