Powder sprayer

Abstract

The invention discloses a powder sprayer which comprises a powder bottle, a bottom cover, a top cover, a powder guide pipe, an air guide pipe, a piston seat, a piston, a head cap and an elastic part, the bottom cover and the top cover are installed at the bottom and the top of the powder bottle, and a powder pipe channel of the air guide pipe is communicated with a first bottom cover hole of the bottom cover and a first top cover hole of the top cover. An air pipe channel of the air guide pipe is communicated with a second bottom cover hole of the bottom cover and a second top cover hole of the top cover, the piston is installed in a piston cavity of the piston seat and a piston cavity of the top cover in a vertically movable mode, and an air channel of the piston seat is communicated with the piston cavity. The piston can allow and prevent the gas channel from being communicated with the external environment, the head cap is installed on the piston seat, a head cap channel of the head cap is communicated with a seat body channel of the piston seat, the elastic part is located in the piston cavity, and a powder outlet channel of the elastic part is communicated with the seat body channel and the first top cover hole.

Description

Technical Field

[0001] This invention relates to a sprayer, and more particularly to a powder sprayer. Background Technology

[0002] In recent years, atomizers for spraying powders such as talcum powder and prickly heat powder have become popular, as they can evenly spray the powder. For example, in Chinese invention patent application publication number CN103563881A, the inventor disclosed a powder sprayer, which includes a bottle body, a pump body, a bottle cap, a head cap, a piston, a push rod, a silicone tube, a connector, and a robotic arm. The bottle body is hollow and transparent, made of plastic, and its inner cavity is used to hold dry powder. The bottle cap is fixed to the upper part of the bottle body by a threaded connection, while pressing the edge of the pump body to the bottle mouth. The bottle cap has a formed guide groove, and the rear part of the head cap has a formed matching guide rib. The head cap can only be pressed down in a limited direction and cannot rotate. The upper part of the pump body is concave to form a piston cavity, the size of which matches the piston. The top of the bottle cap is located above the piston cavity, and the upper end of the piston and the lower end of the head cap are inserted and fixed together. The piston, driven by the cap, slides up and down within the piston chamber, forming an air compression mechanism. An elastic element supports the piston between it and the pump body, ensuring the piston always tends to return to its original position. A large intake valve is located at the lower end of the piston. A return groove is formed between the outer and middle layers of the large intake valve on the outer side of the piston. When the piston moves upward, the volume inside the pump body rapidly increases, and the pressure rapidly decreases. This causes the large intake valve to contract due to the pressure difference between the inside and outside of the pump. A gap is created between the frustum-shaped elastic sleeve of the large intake valve and the conical opening of the piston. Because the upward speed of the piston is greater than that of the large intake valve, the valve lags behind and disengages from the piston, allowing the piston chamber to connect with the outside through the gap and the return groove. This opens the large intake valve, allowing air to enter the pump body. When the piston moves downward, the volume inside the pump body decreases rapidly, and the pressure increases rapidly. This causes the large intake valve to expand due to the pressure difference between the inside and outside air, resulting in a tight seal between the frustum-shaped elastic sleeve of the large intake valve and the conical opening of the piston. This allows outside air to enter the piston chamber through the large intake valve for return air. The pump body has a central column with a stepped hole. On one side of the central column, the pump body has a vent pipe connected to the piston chamber. The flexible tubing is made of silicone, which is hollow and has a certain degree of elasticity. The upper end connects to the nozzle of the head cap, and the lower end is inserted into the central hole of the pump body, abutting and fixing against the stepped surface. The connector is equipped with a connection to the central hole of the pump body and the inner surface of the silicone tube. The pump body features a coaxial powder outlet channel and an airflow channel corresponding to the vent pipe. The upper end of the connector is sealed to the lower end of the pump body via a dimensional fit. For example, the powder outlet channel and the pump body connecting post are plugged in and connected to the central hole, while the airflow channel and the pump body vent pipe are plugged in. The bottom of the powder outlet channel has a base for mixing powder and airflow. The base is placed at the bottom of the bottle and has powder inlets on both sides that connect to the inner cavity of the bottle. The bottom of the airflow channel is connected to the base. A one-way valve is installed in the airflow channel. This one-way valve uses an inlet valve plate. Its structure is that the lower part of the valve core is set as a conical valve, and the upper part of the valve core is a fixed block placed on the valve seat. The fixed blocks form a gap for airflow. The air inlet of the one-way valve is connected to the piston chamber.The air outlet is connected to the base. The main cross-section of the push rod head is T-shaped. Its upper end abuts against the edge of the upper opening of the silicone tube, and a gap is left between the push rod and the silicone tube for dry powder to pass through. The lower end of the push rod passes through the middle hole of the pump body and is placed in the powder outlet channel of the connector. The push rod slides up and down to drive the robot to push the dry powder in the bottle into the base. A support spring is fitted on the push rod. The support spring is supported between the upper end of the push rod and the stepped surface of the center hole of the pump body. Its outer side abuts against the inner wall of the silicone tube. The support spring makes the silicone tube less prone to deformation when compressed, ensuring the smooth flow of dry powder in the silicone tube, and also has a reset function. In use, open the flip-top nozzle and press down the head cap. During the initial 14.8mm stroke, the piston moves downwards, pressurizing the air in the piston chamber above the pump body. This pressurizes the airflow through the vent pipe on the pump body, opening the one-way valve on the connector's airflow channel. Gas flows to the base, where the powder and air mix, creating an airflow. The powder, propelled by this airflow, passes through the powder outlet channel and silicone tube, finally exiting from the nozzle on the head cap. The piston then moves downwards again, and during the subsequent 2.2mm stroke, it drives the push rod downwards. The lower end of the push rod inserts into the V-shaped gap of the robotic arm's flange, abutting against the eccentric flange, causing the robotic arm to rotate and open at a certain angle. When the head cap is released, the piston moves upwards, and the push rod returns to its original position under the support spring. The spring then pushes the robotic arm closed, dispensing powder into the base at the bottom of the connector, preparing for the next use.

[0003] The existing powder aerosol sprayers have several drawbacks. First, they require a one-way valve in the airflow channel to prevent powder from being drawn into the piston chamber through the airflow channel when the piston moves upward. Second, they require a robotic arm to push the powder into the base, and a spring is needed to close the arm, resulting in a complex structure and low reliability. More importantly, when the powder aerosol sprayer is placed in a humid environment, the moisture in the environment comes into contact with the powder remaining in the powder outlet channel, causing this powder to absorb moisture and form a damp film. Since this powder is in direct contact with the metal spring, the moisture in the damp film accelerates the oxidation and rusting of the spring. Once the spring oxidizes and rusts, it not only affects the spring's rebound ability but also contaminates the powder. Third, the method of pushing the powder from the inner cavity of the bottle into the base using a robotic arm results in an excessive amount of powder remaining in the inner cavity of the bottle, making it impossible to use up all the powder. Summary of the Invention

[0004] One object of the present invention is to provide a powder sprayer that does not require a one-way valve. After the user releases the cap of the powder sprayer, the powder in the powder outlet of the bottom cover will not be sucked into the piston chamber of the top cover. This not only simplifies the specific structure of the powder sprayer and improves its reliability, but also reduces the cost of the powder sprayer.

[0005] One object of the present invention is to provide a powder sprayer, wherein the piston of the powder sprayer is movably mounted on a piston seat, and after the user releases the cap, the piston seat moves upward relative to the piston, the piston allowing the gas passage of the piston seat to communicate with the external environment, so as to allow air to be replenished to the piston chamber of the top cap in a timely and continuous manner through the gas passage. In other words, after the user releases the cap, the air in the piston chamber of the top cap is replenished by the external environment, rather than being drawn in from the powder outlet of the bottom cap, so that without the need for a one-way valve, the powder in the powder outlet of the bottom cap will not enter the piston groove of the top cap.

[0006] One object of the present invention is to provide a powder sprayer, wherein the powder sprayer is provided with a rotatable stirring part in the powder cavity of the powder bottle, the stirring part stirring the powder in the powder cavity of the powder bottle to avoid clumping, thereby improving the powder spraying effect of the powder sprayer.

[0007] One object of the present invention is to provide a powder sprayer, wherein the cap and the stirring unit of the powder sprayer are associated, and the stirring unit can automatically rotate when the user presses the cap, so as to facilitate the use of the powder sprayer. Preferably, when the user presses the cap, the stirring arm of the stirring unit can close the opening of the powder outlet of the bottom cover, preventing powder in the powder outlet from being blown into the powder chamber of the powder bottle.

[0008] One object of the present invention is to provide a powder sprayer in which, when the user presses the cap, the stirring arm of the stirring unit can open the opening of the powder outlet slot of the bottom cover, allowing the powder contained in the powder chamber of the powder bottle to automatically enter the powder outlet slot of the bottom cover by its own gravity. When the user releases the cap, as the stirring unit rotates, the stirring arm closes the opening of the powder outlet slot of the bottom cover. When the cap is pressed again, the stirring arm can not only prevent the powder contained in the powder chamber of the powder bottle from entering the powder outlet slot of the bottom cover, but also prevent the powder in the powder outlet slot of the bottom cover from entering the powder chamber of the powder bottle. This facilitates the quantitative spraying of powder by the powder sprayer.

[0009] According to one aspect of the present invention, a powder sprayer is provided, comprising: A powder bottle, which has a powder chamber; A bottom cover is installed at the bottom of the powder bottle to close the bottom opening of the powder chamber. The bottom cover has a powder outlet groove and a first bottom cover hole and a second bottom cover hole respectively connected to the first powder outlet groove. The powder outlet groove is connected to the powder chamber. A top cover is installed on the top of the powder bottle to close the top opening of the powder chamber. The top cover has a piston chamber and a first top cover hole and a second top cover hole respectively communicating with the piston chamber. A powder guide tube having a powder tube channel, the powder tube channel being connected to the first bottom cover hole and the first top cover hole; An air duct having an air passage connecting the second bottom cover hole and the second top cover hole; A piston seat having a solid channel and at least one gas channel; A piston is movably mounted vertically on the piston seat and vertically on the piston chamber of the top cover. The peripheral wall of the piston is in contact with the inner wall of the top cover. The gas passage communicates with the piston chamber. As the piston and the piston seat move relative to each other, the piston can allow or prevent the gas passage from communicating with the external environment. A cap having a cap channel, the cap being mounted on the piston seat, the cap channel communicating with the seat body channel; An elastic part having a powder outlet channel is located inside the piston cavity, and the powder outlet channel connects the seat channel and the first top cover hole.

[0010] According to one embodiment of the present invention, the piston seat includes a lower seat body and an upper seat body. The lower seat body includes an insertion tube and a bottom drive ring extending outward from the bottom or middle of the insertion tube. The gas passage is disposed in the bottom drive ring. The upper seat body includes a connecting tube and a top drive ring extending outward from the middle of the connecting tube. The seat passage is disposed in the connecting tube. The top of the insertion tube is inserted into the bottom of the connecting tube. The top drive ring is located above the bottom drive ring. The piston seat is formed between the bottom drive ring and the top drive ring. A movable groove is provided, the height of which is greater than the height of the piston. The inner diameter of the piston is greater than the outer diameter of the bottom of the connecting pipe. The inner diameter of the piston is smaller than the outer diameters of the bottom drive ring and the top drive ring. The piston is fitted onto the bottom of the connecting pipe. A piston seat forms a gap between the piston and the connecting pipe. The gap communicates with the gas passage. As the piston and the piston seat move relative to each other, the bottom of the piston can fit against and move away from the bottom drive ring, and the top of the piston can move away from and fit against the top drive ring.

[0011] According to one embodiment of the present invention, the powder sprayer includes a shoulder sleeve that is mounted on the top cover, the inner side of the shoulder sleeve extending above the top drive ring for limiting the maximum upward movement of the piston seat.

[0012] According to one embodiment of the present invention, the elastic part is a bellows forming the powder outlet channel. The bottom of the bellows is mounted on the top cover, and the top of the bellows is mounted on the piston seat, such that the powder outlet channel communicates with the seat channel and the first top cover hole.

[0013] According to one embodiment of the present invention, the bottom cover body has an assembly shaft protruding into the powder cavity of the powder bottle, wherein the powder atomizer includes a stirring part, the stirring part including an assembly tube and at least one stirring arm extending outward from the bottom of the assembly tube, the assembly tube having an assembly hole, the assembly shaft of the bottom cover being inserted into the assembly hole of the assembly tube so that the stirring part is held at the bottom of the powder cavity of the powder bottle by the bottom cover, wherein the stirring part is rotatable about the assembly shaft of the bottom cover.

[0014] According to one embodiment of the present invention, the bottom surface of the stirring arm of the stirring part is in contact with the top surface of the top cover, and as the stirring part rotates, the stirring arm can close and open the outlet of the powder discharge trough of the bottom cover.

[0015] According to one embodiment of the present invention, the stirring part is drivably connected to the head cap, and when the head cap is pressed and released, the stirring part can be driven to rotate about the assembly axis of the bottom cover body.

[0016] According to one embodiment of the present invention, the powder sprayer includes a driving unit, which includes a lower driving tube, an upper driving tube, a reset element, and a driving rod. The lower driving tube has a first tube hole and a set of driven columns extending along the height direction. The top of each driven column has a driven inclined surface, and the side has a blocked vertical surface. The upper driving tube has a second tube hole and a set of guide columns arranged along the height direction. The bottom surface of the upper driving tube is serrated, formed by alternating arrangements of a first inclined surface and a second inclined surface. The top of the lower driving tube is movably mounted vertically to the second tube hole of the upper driving tube. The first tube hole and the second tube hole communicate. The inner wall of the powder guiding tube has a driving ring with a set of guide grooves extending along the height direction. The bottom surface of the driving ring is formed by alternating arrangements of a driving inclined surface and a blocking vertical surface. The upper driving tube is movably mounted vertically to the powder channel of the powder guiding tube. The guide post of the upper drive tube protrudes into the guide groove of the drive ring. The blocking vertical surface of the drive ring corresponds to the middle of the first inclined surface of the upper drive tube. The bottom surface of the upper drive tube corresponds to the inner side of the driven inclined surface of the driven column. The bottom surface of the drive ring corresponds to the outer side of the driven inclined surface. The blocked vertical surface of the driven column can fit against the blocking vertical surface of the drive ring. The bottom of the lower drive tube is movably mounted on the assembly tube of the stirring part. The first tube hole of the lower drive tube communicates with the first bottom cover hole of the bottom cover, so that the powder tube channel of the powder guide tube communicates with the first bottom cover hole of the bottom cover through the second tube hole of the upper drive tube and the first tube hole of the lower drive tube. The bottom of the reset element abuts against the bottom cover and the top abuts against the top of the lower drive tube. The top of the drive rod is mounted on the head cap, and the bottom of the drive rod can abut against the bottom of the upper drive tube.

[0017] According to one embodiment of the present invention, the stirring part has six stirring arms, with two stirring arms arranged at equal intervals; the lower drive tube has three driven columns, which are arranged at equal intervals; the upper drive tube has six first inclined surfaces and six second inclined surfaces, with the six first inclined surfaces and six second inclined surfaces arranged at equal intervals; and the powder guide tube has six driving inclined surfaces and six blocking vertical surfaces, with the six driving inclined surfaces and six blocking vertical surfaces arranged at equal intervals.

[0018] According to one embodiment of the present invention, the bottom cover body of the bottom cover has a first bottom cover insert post, the first bottom cover hole is formed in the first bottom cover insert post, the first bottom cover insert post extends into the first tube hole of the lower drive tube, and the peripheral wall of the first bottom cover insert post fits against the inner wall of the lower drive tube, so that the first tube hole of the lower drive tube and the first bottom cover hole of the bottom cover are in communication.

[0019] According to one embodiment of the present invention, the inner cylinder of the top cover has a stop tube protruding into the powder cavity of the powder bottle. The stop tube forms the first top cover hole of the top cover. The bottom of the stop tube has multiple stop arms and multiple tube grooves. A tube is formed between two adjacent stop arms. The tube groove communicates with the first top cover hole. The stop tube is inserted into the powder tube channel of the powder guide tube so that the powder tube channel communicates with the first top cover hole. The top of the drive rod has a... The plug has a stop ring in the middle. The middle part of the drive rod is held in the seat channel of the piston seat, the powder outlet channel of the elastic part, the first top cover hole of the top cover, and the powder tube channel of the powder guide tube. The plug of the drive rod is configured to close the seat channel of the piston seat. The bottom of the stop tube can abut against the stop ring of the drive rod. After the bottom of the stop tube abuts against the stop ring of the drive rod, the plug closes the seat channel of the piston seat.

[0020] According to one embodiment of the present invention, after the plug of the drive rod closes the seat channel of the piston seat, the distance between the top of the drive rod and the inner wall of the cap is less than the distance between the bottom of the drive rod and the upper drive tube.

[0021] According to one embodiment of the present invention, the air guide tube includes a main air tube and a connecting tube. The connecting tube has a main pipe section and a side pipe section extending downward from the side of the main pipe section, such that the main pipe section and the side pipe section are misaligned. The main pipe section is installed at the bottom of the main air tube. The air passage of the air guide tube extends from the top of the main air tube to the bottom of the side pipe section of the connecting tube. The inner cylinder of the top cover has a downward insert post, and a second top cover hole is formed in the downward insert post. An insert post is inserted into the pipe hole of the main air tube to install the top of the main air tube onto the top cover 3, and the air passage of the air guide tube communicates with the second top cover hole of the top cover. The bottom cover body of the bottom cover has a second bottom cover insert post, and a second bottom cover hole is formed in the second bottom cover insert post. The second bottom cover insert post is inserted into the pipe hole of the adapter tube to install the bottom of the side pipe section of the adapter tube onto the bottom cover, and the air passage of the air guide tube communicates with the second bottom cover hole of the bottom cover. Attached Figure Description

[0022] Figure 1 This is a perspective view of a powder sprayer according to a preferred embodiment of the present invention.

[0023] Figure 2 This is an exploded view of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0024] Figure 3 yes Figure 2 A magnified view of a local location.

[0025] Figure 4 This is an exploded view of the powder sprayer according to the preferred embodiment of the present invention.

[0026] Figure 5 This is a cross-sectional schematic diagram of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0027] Figure 6 This is a perspective view of a partial structure of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0028] Figure 7 This is an exploded view of the partial structure of the powder sprayer according to the preferred embodiment of the present invention.

[0029] Figure 8 This is a perspective view of the first state of the partial structure of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0030] Figure 9This is a perspective view of the second state of the partial structure of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0031] Figure 10 This is a perspective view of the third state of the partial structure of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0032] Figure 11 This is a perspective view of the fourth state of the partial structure of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0033] Figure 12 This is a perspective view of one of the powder spraying processes of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0034] Figure 13 This is a perspective view of the second powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0035] Figure 14 This is a three-dimensional schematic diagram of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0036] Figure 15 This is a three-dimensional schematic diagram of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0037] Figure 16 This is a three-dimensional schematic diagram of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0038] Figure 17 This is a three-dimensional schematic diagram of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0039] Figure 18 This is a three-dimensional schematic diagram of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0040] Figure 19 This is a perspective view of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention.

[0041] Figure 20 This is a perspective view of the powder spraying process of the powder sprayer according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0042] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0043] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting 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 may exist; for example, A and / or B can indicate: 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.

[0044] 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.

[0045] Refer to the accompanying drawings of the specification of this invention. Figures 1 to 20 A powder sprayer according to a preferred embodiment of the present invention will be disclosed and described in the following description, wherein the powder sprayer includes a powder bottle 10, a bottom cap 20, a top cap 30, a powder guide tube 40, an air guide tube 50, a piston seat 60, a piston 70, a head cap 80, and an elastic part 90.

[0046] Specifically, the powder bottle 10 has a powder cavity 11, the bottom cover 20 is installed at the bottom of the powder bottle 10 to close the bottom opening of the powder cavity 11, and the top cover 30 is installed at the top of the powder bottle 10 to close the top opening of the powder cavity 11. In this way, powders such as prickly heat powder and talcum powder can be contained in the powder cavity 11 of the powder bottle 10.

[0047] In this embodiment, the bottom cover 20 has a first bottom cover hole 21, a second bottom cover hole 22, and a powder outlet trough 23. The first bottom cover hole 21 and the second bottom cover hole 22 are respectively connected to the powder outlet trough 23. The opening 231 of the powder outlet trough 23 is exposed in the powder cavity 11 of the powder bottle 10. Powder contained in the powder cavity 11 of the powder bottle 10 can enter the powder outlet trough 23 of the bottom cover 20 through the opening 231 of the powder outlet trough 23 based on its own gravity. The top cover 30 has a first top cover hole 31, a second top cover hole 32, and a piston cavity 33. The first top cover hole 31 and the second top cover hole 32 are respectively connected to the piston cavity 33. The powder guide tube 40 has a powder tube channel 41, which connects the first bottom cover hole 21 of the bottom cover 20 and the first top cover hole 31 of the top cover 30. Thus, the powder outlet groove 23 of the bottom cover 20 and the first bottom cover hole 21, the first powder tube channel 41 of the powder guide tube 40, and the first top cover hole 31 of the top cover 30 are sequentially connected. The air guide tube 50 has an air tube channel 51, which connects the second bottom cover hole 22 of the bottom cover 20 and the second top cover hole 32 of the top cover 30. Thus, the piston chamber 33 of the top cover 30 and the second top cover hole 32, the air tube channel 51 of the air guide tube 50, the second bottom cover hole 22 of the bottom cover 20, and the powder outlet groove 23 are sequentially connected.

[0048] The piston seat 60 has a body channel 61 and at least one gas channel 62. The piston 70 is movably mounted on the piston seat 60, and the piston 70 is movably mounted in the piston cavity 33 of the top cover 30 such that the peripheral wall of the piston 70 is against the inner wall of the top cover 30. The gas channel 62 of the piston seat 60 communicates with the piston cavity 33 of the top cover 30. With the relative movement of the piston 70 and the piston seat 60, the piston 70 can allow or prevent the body channel 61 of the piston seat 60 from communicating with the external environment. The cap 80 has a cap channel 81, and the cap 80 is mounted on the piston seat 60. The cap channel 81 of the cap 80 communicates with the body channel 61 of the piston seat 60.

[0049] The elastic part 90 has a powder outlet channel 91. The elastic part 90 is located in the piston cavity 33 of the top cover 30. The powder outlet channel 91 of the elastic part 90 is connected to the seat body channel 61 of the piston seat 60 and the first top cover hole 31 of the top cover 30. In this way, the first top cover hole 31 of the top cover 30, the powder outlet channel 91 of the elastic part 90, the seat body channel 61 of the piston seat 60 and the head cap channel 81 of the head cap 80 are connected in sequence.

[0050] When the user begins to press the cap 80, due to the large friction between the peripheral wall of the piston 70 and the inner wall of the top cover 30, the piston 70 remains stationary, and the cap 80 only drives the piston seat 60 to move downward. A relative displacement occurs between the piston seat 60 and the piston 70. At this time, the piston 70 prevents the gas passage 62 of the piston seat 60 from connecting to the external environment. Next, press the cap 80. As the cap 80 moves the piston seat 60 downward, the piston seat 60 drives the piston 70 downward to compress the piston chamber 33 of the top cover 30. This causes the air in the piston chamber 33 of the top cover 30 to flow sequentially through the second top cover hole 32 of the top cover 30, the air pipe channel 51 of the air guide pipe 50, and the second bottom cover hole 22 of the bottom cover 20 before reaching the powder outlet 23. The air then carries the powder in the powder outlet 23 sequentially through the first bottom cover hole 21 of the bottom cover 20, the powder pipe channel 41 of the powder guide pipe 40, the first top cover hole 31 of the top cover 30, the powder outlet channel 91 of the elastic part 90, the seat channel 61 of the piston seat 60, and the cap channel 81 of the cap 80 to be discharged to the outside. In this way, the powder sprayer achieves the powder spraying effect. It is understandable that during the process of pressing the cap 80 and causing the piston seat 60 to move downward, the piston seat 60 compresses the elastic part 90 toward the top cover 30, causing the elastic part 90 to be compressed and deformed to accumulate elastic potential energy.

[0051] After the user releases the cap 80, the elastic part 90 pushes the piston seat 60 and the cap 80 upward during the process of returning to the initial state. Since there is a large friction between the peripheral wall of the piston 70 and the inner wall of the top cover 30, the piston 70 remains stationary, and a relative displacement occurs between the piston seat 60 and the piston 70. At this time, the piston 70 allows the gas passage 62 of the piston seat 60 to connect with the external environment. The elastic part 90 continues to push the piston seat 60 and the cap 80 upwards. The piston seat 60 drives the piston 70 to move upwards, thereby expanding the piston chamber 33 of the top cover 30. During this process, since the piston chamber 33 of the top cover 30 is always connected to the external environment through the gas passage 62 of the piston seat 60, the air from the external environment can be replenished to the piston chamber 33 of the top cover 30 in a timely and continuous manner, avoiding the formation of a negative pressure environment in the piston chamber 33 of the top cover 30. Thus, it is not necessary to install a one-way valve in the channel between the piston chamber 33 of the top cover 30 and the powder outlet chamber 23 of the bottom cover 20. During the powder spraying process of the powder atomizer, the powder in the powder chamber 11 of the powder bottle 10 and the powder in the powder outlet 23 of the bottom cover 20 will not be sucked into the piston chamber 33 of the top cover 30, thereby simplifying the specific structure of the powder atomizer, reducing the cost of the powder atomizer, and improving the reliability of the powder atomizer.

[0052] Further, see attached document. Figure 2 , Figure 4 and Figure 5 The bottom cover 20 includes a bottom cover body 24 and a small cover 25. The bottom cover body 24 has a bottom cover groove 241 with a bottom opening. The first bottom cover hole 21, the second bottom cover hole 22 and the groove opening 231 of the powder outlet groove 23 are respectively formed in the bottom cover body 24. The small cover 25 is installed at the bottom of the bottom cover body 24 and is used to close the bottom opening of the bottom cover groove 241 so that the powder outlet groove 23 is formed between the bottom cover body 24 and the small cover 25 by the bottom cover groove 241 of the bottom cover body 24.

[0053] Furthermore, the bottom cover 20 includes a bottom cover skirt ring 26, which extends downward from the edge of the bottom cover body 24. After the bottom cover 20 is inserted into the powder cavity 11 of the powder bottle 10 from bottom to top, the outer wall of the bottom cover skirt ring 26 of the bottom cover 20 and the inner wall of the bottom of the powder bottle 10 are attached to each other and interlocked to reliably install the bottom cover 20 at the bottom of the powder bottle 10.

[0054] Furthermore, the bottom cover body 24 has a powder injection channel 242, which communicates with the powder cavity 11 of the powder bottle 10, allowing powder to be injected into the powder cavity 11 of the powder bottle 10 via the powder injection channel 242 of the bottom cover body 24. The bottom cover 20 includes a bottom cover plug 27, which is installed on the bottom cover body 24 to close the powder injection channel 242 of the bottom cover body 24.

[0055] Continue to refer to the appendix Figures 2 to 5 The top cover 30 is screwed onto the top of the powder bottle 10 to reliably install the top cover 30 on the top of the powder bottle 10. Specifically, the top cover 30 includes a top cover ring 34, a top cover inner cylinder 35, and a top cover outer ring 36. The top cover inner cylinder 35 extends downward from the inside of the top cover ring 34. The first top cover hole 31, the second top cover hole 32, and the piston chamber 33 are respectively formed in the top cover inner cylinder 35. The top cover outer ring 36 extends downward from the outside of the top cover ring 34 and surrounds the outside of the top cover inner cylinder 35. The top cover 30 forms a top cover groove 37 between the top cover ring 34, the top cover inner cylinder 35, and the top cover outer ring 36, and the top cover outer ring 36 has an internal thread structure protruding into the top cover groove 37. The powder bottle 10 has an external threaded structure. After the inner cylinder 35 of the top cover sinks into the interior of the powder bottle 10 and the top of the powder bottle 10 extends into the top cover groove 37 of the top cover 30, the internal thread of the outer ring 36 of the top cover and the external thread of the powder bottle 10 cooperate with each other to screw the top cover 30 onto the top of the powder bottle 10. In this way, the top cover 30 is reliably installed on the top of the powder bottle 10 and is used to close the top opening of the powder cavity 11 of the powder bottle 10. Preferably, a sealing gasket is provided between the top of the powder bottle 10 and the top cover ring 34 of the top cover 30.

[0056] The piston seat 60 includes a lower seat body 63 and an upper seat body 64, and the piston seat 60 has a movable groove 65 and a gap 66. The lower seat body 63 includes an insertion tube 631 and a bottom drive ring 632, the bottom drive ring 632 extending outward from the bottom of the insertion tube 631, and the gas passage 62 is disposed in the bottom drive ring 632. The upper seat body 64 includes a connecting tube 641 and a top drive ring 642, the top drive ring 642 extending outward from the middle of the connecting tube 641, and the seat passage 61 is disposed in the connecting tube 641. The insertion tube 631 of the lower seat 63 is inserted into the bottom of the connecting tube 641 of the upper seat 64. The top drive ring 642 is located above the bottom drive ring 632. The piston seat 60 forms the movable groove 65 between the bottom drive ring 632 and the top drive ring 642. The height of the movable groove 65 is greater than the height of the piston 70. The inner diameter of the piston 70 is greater than the outer diameter of the bottom of the connecting tube 641. Thus, after the piston 70 is fitted into the bottom of the connecting tube 641, the piston seat 60 forms the gap 66 between the connecting tube 641 and the piston 70, and the gap 66 communicates with the gas passage 62. The inner diameter of the piston 70 is smaller than the outer diameter of the bottom drive ring 632 and the outer diameter of the top drive ring 642, so that as the piston 70 and the piston seat 60 move relative to each other, the bottom of the piston 70 can engage with and disengage from the bottom drive ring 632, and the top of the piston 70 can disengage from and engage with the top drive ring 642. Optionally, in other examples, the bottom drive ring 632 may extend outward from the middle of the insertion tube 631.

[0057] Specifically, when the user presses the cap 80, causing the piston seat 60 to move downward relative to the piston 70, the friction between the peripheral wall of the piston 70 and the inner wall of the inner cylinder 35 of the top cover 30 causes the bottom of the piston 70 to move away from the bottom drive ring 632 and the top of the piston 70 to adhere to the top drive ring 642. At this time, the piston 70 prevents the gas passage 62 of the piston seat 60 from connecting to the external environment. When the user releases the cap 80, causing the piston seat 60 to move upward relative to the piston 70, the piston... The friction between the peripheral wall of piston 70 and the inner wall of the inner cylinder 35 of the top cover 30 causes the bottom of piston 70 to be in contact with the bottom drive ring 632 and the top of piston 70 to be away from the top drive ring 642. At this time, piston 70 allows the gas passage 62 of piston seat 60 to communicate with the external environment. At this time, piston chamber 33 of top cover 30 communicates with the external environment through the gas passage 62 of piston seat 60, the gap 66, and the gap formed between the top drive ring 642 and piston 70 in upper seat 64.

[0058] Preferably, the upper seat 64 includes an integral skirt ring 643 that extends downward from the outside of the top drive ring 642. When the user presses the cap 80, causing the top of the piston 70 to adhere to the top drive ring 642, the piston 70 and the inner wall of the skirt ring 643 adhere to each other, thereby improving the sealing effect between the piston 70 and the upper seat 64.

[0059] In an embodiment of the present invention, the insertion tube 631 of the lower seat 63 and the connecting tube 641 of the upper seat 64 are engaged with each other so that the lower seat 63 and the upper seat 64 are reliably installed, avoiding relative displacement between the lower seat 63 and the upper seat 64 in the height direction.

[0060] In an embodiment of the present invention, the top of the connecting tube 641 of the upper seat 64 is inserted into the head cap channel 81 of the head cap 80, and the connecting tube 641 and the head cap 80 are engaged with each other so that the head cap 80 is reliably installed on the upper seat 64, thereby the head cap 80, the upper seat 64 and the lower seat 63 are combined into a whole, so that the head cap 80 and the piston seat 60 rise and fall synchronously.

[0061] Reference Appendix Figures 1 to 5In this invention, the powder sprayer includes a shoulder sleeve 100, which is mounted on the top cover 30. The inner side of the shoulder sleeve 100 extends above the top drive ring 642 of the upper seat 64 to limit the maximum upward movement of the piston seat 60 and prevent the piston seat 60 from falling off the top cover 30, thereby ensuring that the piston 70 is reliably mounted in the piston chamber 33 of the top cover 30.

[0062] Specifically, the shoulder sleeve 100 includes a shoulder sleeve top ring 101, a shoulder sleeve inner ring 102, and a shoulder sleeve outer ring 103. The shoulder sleeve inner ring 102 extends downward from the inside of the shoulder sleeve top ring 101, and the shoulder sleeve outer ring 103 extends downward from the outside of the shoulder sleeve top ring 101. The shoulder sleeve outer ring 103 surrounds the outside of the shoulder sleeve inner ring 102. The shoulder sleeve 100 forms a shoulder sleeve groove 104 between the shoulder sleeve top ring 101, the shoulder sleeve inner ring 102, and the shoulder sleeve outer ring 103. The top of the top cover 30 is inserted into the shoulder sleeve groove 104 of the shoulder sleeve 100. The inner shoulder sleeve ring 102 of the shoulder sleeve 100 extends toward the top drive ring 642 of the upper seat 64 and can abut against the top drive ring 642. The outer shoulder sleeve ring 103 surrounds the outside of the top cover 30 and the inner wall of the outer shoulder sleeve ring 103 fits against the outer wall of the top cover 30.

[0063] In its natural state, that is, when the cap 80 is not pressed, the restoring force provided by the elastic part 90 causes the bottom surface of the inner ring 102 of the shoulder sleeve 100 to fit against the top surface of the top drive ring 642 of the upper seat 64, thereby preventing moisture from entering the gap between the upper seat 64, the piston 70 and the top cover 30. This helps to prevent the powder in the powder outlet 23 of the bottom cover 20 from clumping due to moisture absorption, thus ensuring that the powder sprayer achieves the powder spraying effect.

[0064] Preferably, the top of the top cover 30 and the outer ring 103 of the shoulder sleeve 100 are fastened together so that the shoulder sleeve 100 is reliably installed on the top cover 30.

[0065] Reference Appendix Figure 2 , Figures 4 to 10In an embodiment of the present invention, the bottom cover body 24 of the bottom cover 20 has an assembly shaft 243 that protrudes into the powder cavity 11 of the powder bottle 10. The powder atomizer includes a stirring part 110, which includes an assembly tube 1101 and at least one stirring arm 1102 extending outward from the bottom of the assembly tube 1101. The assembly tube 1101 has an assembly hole 11011. The assembly shaft 243 of the bottom cover body 24 is inserted into the assembly hole 11011 of the assembly tube 1101 so that the bottom cover 20 holds the stirring part 110 at the bottom of the powder cavity 11 of the powder bottle 10. When driven, the stirring part 110 can rotate about the assembly shaft 243 of the bottom cover body 24 so that the stirring arm 1102 can stir the powder contained in the powder cavity 11 of the powder bottle 10.

[0066] Preferably, the bottom surface of the stirring arm 1102 of the stirring unit 110 is in contact with the top surface of the bottom cover 20, and as the stirring unit 110 rotates, the stirring arm 1102 can open and close the opening 231 of the powder outlet 23 of the bottom cover 20. It is understood that when the stirring arm 1102 opens the opening 231 of the powder outlet 23 of the bottom cover 20, the powder contained in the powder chamber 11 of the powder bottle 10 can automatically enter the powder outlet 23 of the bottom cover 20 through the opening 231 of the powder outlet 23 based on its own gravity. When the stirring arm 1102 closes the opening 231 of the powder outlet 23 of the bottom cover 20, the powder in the powder outlet 23 of the bottom cover 20 is prevented from entering the powder outlet 23 in the opposite direction. The powder chamber 11 of the powder bottle 10 ensures that the airflow entering the powder outlet 23 from the second bottom cover hole 22 of the bottom cover 20 can blow out the powder in the powder outlet 23 only through the first bottom cover hole 21 of the bottom cover 20, the powder tube channel 41 of the powder guide tube 40, the first top cover hole 31 of the top cover 30, the powder outlet channel 91 of the elastic part 90, the seat channel 61 of the piston seat 60, and the head cap channel 81 of the head cap 80. In a specific example of the present invention, the top surface of the bottom cover 20 is funnel-shaped, which is beneficial to use up all the powder contained in the powder chamber 11 of the powder bottle 10.

[0067] It is understood that since the capacity of the powder outlet trough 23 of the bottom cover 20 is fixed, and during the powder spraying process, the stirring arm 1102 closes the slot opening 231 of the powder outlet trough 23 of the bottom cover 20, so as to ensure that the airflow entering the powder outlet trough 23 from the second bottom cover hole 22 of the bottom cover 20 can blow out the powder in the powder outlet trough 23 only through the first bottom cover hole 21 of the bottom cover 20, the powder tube channel 41 of the powder guide tube 40, the first top cover hole 31 of the top cover 30, the powder outlet channel 91 of the elastic part 90, the seat channel 61 of the piston seat 60 and the head cap channel 81 of the head cap 80, the powder sprayer of the present invention can achieve quantitative powder spraying.

[0068] In this invention, the stirring part 110 is drivably connected to the cap 80. When the cap 80 is pressed, the cap 80 can drive the stirring part 110 to rotate, so that the stirring part 110 can stir the powder contained in the powder chamber 11 of the powder bottle 10 and enable the stirring arm 1102 of the stirring part 110 to open and close the slot 231 of the powder outlet 23 of the bottom cover 20.

[0069] Specifically, the powder atomizer includes a drive unit 120, which includes a lower drive tube 1201, an upper drive tube 1202, a reset element 1203, and a drive rod 1204. The lower drive tube 1201 has a first tube hole 12011 and a set of driven columns 12012 extending along the height direction. The top of the driven column 12012 is provided with a driven inclined surface 120121 and the side is provided with a blocked vertical surface 120122. The upper drive tube 1202 has a second tube hole 12021 and a set of guide columns 12022. The bottom surface of the upper drive tube 1202 is serrated, which is formed by an alternating arrangement of a set of first inclined surfaces 12023 and a set of second inclined surfaces 12024. The inner wall of the powder guiding tube 40 is provided with a driving ring 42. The driving ring 42 has a set of guide grooves 421 extending along the height direction. The bottom surface of the driving ring 42 is formed by an alternating arrangement of a set of driving inclined surfaces 422 and a set of blocking vertical surfaces 423. The top of the lower drive tube 1201 is movably mounted on the second tube hole 12021 of the upper drive tube 1202. The upper drive tube 1202 is movably mounted on the powder tube channel 41 of the powder guide tube 40. Each guide post 12022 of the upper drive tube 1202 protrudes into each guide groove 421 of the drive ring 42. The blocking vertical surface 423 of the drive ring 42 corresponds to the middle part of the first inclined surface 12023 of the upper drive tube 1202. The bottom surface of the upper drive tube 1202 corresponds to the inner side of the driven inclined surface 120121 of the driven post 12012 of the lower drive tube 1201. The bottom surface of the drive ring 42 corresponds to the outer side of the driven inclined surface 120121. The blocked vertical surface 120122 of the driven post 12012 can fit against the blocking vertical surface 423 of the drive ring 42. The bottom of the lower drive tube 1201 is movably mounted on the assembly tube 1101 of the stirring section 110, and the first tube hole 12011 of the lower drive tube 1201 communicates with the first bottom cover hole 21 of the bottom cover 20, so that the powder tube channel 41 of the powder guide tube 40 communicates with the first bottom cover hole 21 of the bottom cover 20 through the second tube hole 12021 of the upper drive tube 1202 and the first tube hole 12011 of the lower drive tube 1201. The bottom of the reset element 1203 abuts against the bottom cover 20, and the top of the reset element 1203 abuts against the bottom of the lower drive tube 1201. The top of the drive rod 1204 is mounted on the head cap 80, and the bottom of the drive rod 1204 can abut against the bottom of the upper drive tube 1202.

[0070] When the user presses the head cap 80, the head cap 80 drives the drive rod 1204 to move downward, causing the bottom of the drive rod 1204 to press down on the upper drive tube 1202. At least a portion of the first inclined surface 12023 of the upper drive tube 1202 and the driven inclined surface 120121 of the driven column 12012 of the lower drive tube 1201 are in contact with each other, allowing the upper drive tube 1202 to drive the lower drive tube 1201 to move downward. At this time, the reset element 1203 is compressed and deformed to accumulate elastic potential energy. During this process, the blocking vertical surface 423 of the drive ring 42 and the obstructed vertical surface 120122 of the driven column 12012 are in contact with each other to prevent the lower drive tube 1201 from rotating. When the upper drive tube 1202 and the lower drive tube 1201 move downwards until the driven inclined surface 120121 of the driven column 12012 is flush with the connection between the drive inclined surface 422 and the blocking vertical surface 423 of the drive ring 42, the blocking vertical surface 423 of the drive ring 42 and the obstructed vertical surface 120122 of the driven column 12012 are misaligned in the height direction, causing the drive ring 42 to no longer obstruct the lower drive tube 1201. At this time, the drive inclined surface 422 of the drive ring 42 and the driven inclined surface 120121 of the driven column 12012 cooperate with each other, allowing the lower drive tube 1201 and the stirring section 110 to interact. When the drive tube 1201 rotates from the connection point of the driven inclined surface 120121 and the obstructed vertical surface 12012 of the driven column 12012 of the lower drive tube 1201 to the connection point of the first inclined surface 12023 and the second inclined surface 12024 of the upper drive tube 1202, the upper drive tube 1202 prevents the lower drive tube 1201 from continuing to rotate. At this time, the stirring arm 1102 of the stirring part 110 opens the slot 231 of the powder outlet trough 23 of the bottom cover 20, allowing the powder in the powder chamber 11 of the powder bottle 10 to enter the powder outlet trough 23 of the bottom cover 20 through the slot 231 of the powder outlet trough 23.When the user releases the headgear 80, the reset element 1203 pushes the lower drive tube 1201 and the upper drive tube 1202 upward during the process of restoring the initial state. After the lower drive tube 1201 and the upper drive tube 1202 rotate to the position where the drive ramp 422 of the drive ring 42 abuts against the driven ramp 120121 of the driven post 12012 of the lower drive tube 1201, the drive ramp 422 of the drive ring 42 and the driven ramp 120122 of the upper drive tube 1201... The driven inclined surfaces 120121 of the driven column 12012 cooperate with each other to allow the lower drive tube 1201 and the stirring part 110 to rotate. When the obstructed vertical surface 120122 of the driven column 12012 is in contact with the blocking vertical surface 423 of the drive ring 42, the drive ring 42 prevents the lower drive tube 1201 from continuing to rotate. At this time, the stirring arm 1102 of the stirring part 110 closes the slot 231 of the powder outlet 23 of the bottom cover 20.

[0071] Preferably, the bottom cover body 24 of the bottom cover 20 has a first bottom cover insertion post 244, the first bottom cover hole 21 is formed in the first bottom cover insertion post 244, the first bottom cover insertion post 244 extends into the first pipe hole 12011 of the lower drive pipe 1201, and the peripheral wall of the first bottom cover insertion post 244 fits against the inner wall of the lower drive pipe 1201, so that the first pipe hole 12011 of the lower drive pipe 1201 and the first bottom cover hole 21 of the bottom cover 20 are in communication.

[0072] In this specific example of the powder spray bottle of the present invention, the bottom cross-section of the assembly tube 1101 of the stirring part 110 is circular, and its shape and size are consistent with the shape and size of the assembly shaft 243 of the bottom cover 20. The top cross-section of the assembly tube 1101 of the stirring part 110 is non-circular, and its shape and size are consistent with the size and shape of the bottom of the lower drive tube 1201. Thus, when the lower drive tube 1201 is driven to move up and down, the lower drive tube 1201 generates a position relative to the stirring part 110 in the height direction. When the lower drive tube 1201 is driven to rotate, the lower drive tube 1201 drives the stirring part 110 to rotate synchronously, so that the stirring part 110 can stir the powder contained in the powder chamber 11 of the powder bottle 10 and the stirring arm 1102 of the stirring part 110 can open and close the slot 231 of the powder outlet 23 of the bottom cover 20. Specifically, the top of the assembly tube 1101 of the stirring section 110 has a hexagonal cross-sectional shape, and correspondingly, the bottom of the lower drive tube 1201 has a hexagonal cross-sectional shape.

[0073] In this specific example of the powder spray bottle of the present invention, the stirring unit 110 has six stirring arms 1102, which are equidistantly arranged; the lower drive tube 1201 has three driven columns 12012, which are equidistantly arranged; the upper drive tube 1202 has six first inclined surfaces 12023 and six second inclined surfaces 12024, which are equidistantly arranged; and the powder guide tube 40 has six driving inclined surfaces 422 and six blocking vertical surfaces 423, which are also six. The driving ramps 422 are arranged at equal intervals, and the six blocking vertical surfaces 423 are arranged at equal intervals. With this structure, when the user presses the cap 80, the stirring part 110 rotates at an angle of 30°. At this time, the stirring arm 1102 of the stirring part 110 opens the slot 231 of the powder outlet 23 of the bottom cover 20 to allow the powder in the powder chamber 11 of the powder bottle 10 to enter the powder outlet 23 of the bottom cover 20 through the slot 231 of the powder outlet 23. When the user releases the cap 80, the stirring part 110 rotates at an angle of 30°. At this time, the stirring arm 1102 of the stirring part 110 closes the slot 231 of the powder outlet 23 of the bottom cover 20.

[0074] Reference Appendix Figure 2The inner cylinder 35 of the top cover 30 has a stop tube 351 that protrudes into the powder cavity 11 of the powder bottle 10. The stop tube 351 forms the first top cover hole 31 of the top cover 30. The bottom of the stop tube 351 has multiple stop arms 3511 and multiple grooves 3512 formed between adjacent stop arms 3511. The grooves 3512 are connected to the first top cover hole 31. The stop tube 351 is inserted into the powder tube channel 41 of the powder guide tube 40 to mount the top of the powder guide tube 40 to the top cover 30, thereby connecting the powder tube channel 41 of the powder guide tube 40 with the first top cover hole 31 of the top cover 30. The drive rod 1204 has a plug 12041 at its top and an abutment ring 12042 at its middle. The middle of the drive rod 1204 is held in the seat channel 61 of the piston seat 60, the powder outlet channel 91 of the elastic part 90, the first top cover hole 31 of the top cover 30, and the powder tube channel 41 of the powder guide tube 40. The plug 12041 of the drive rod 1204 is configured to close the seat channel 61 of the piston seat 60. The bottom of the abutment tube 351 of the inner cylinder of the top cover 35 can abut against the abutment ring 12042 of the drive rod 1204. The groove 3512 of the abutment tube 351 is used to ensure that the space above and below the abutment ring 12042 of the powder guide tube 40 is always in a connected state. Preferably, the top opening of the seat channel 61 of the piston seat 60 is conical, and correspondingly, the plug 12041 of the drive rod 1204 is conical. In this way, the plug 12041 of the drive rod 1204 and the piston seat 60 cooperate with each other, which can improve the sealing effect between the plug 12041 and the piston seat 60.

[0075] Specifically, when the cap 80 is not pressed, the bottom of the abutment tube 351 of the top cover 30 abuts against the abutment ring 12042 of the drive rod 1204, so that the plug 12041 of the drive rod 1204 is kept in the position of closing the seat channel 61 of the piston seat 60. At this time, the air in the external environment is prevented from entering the powder outlet channel 91 of the elastic part 90 through the seat channel 61 of the piston seat 60, so that the powder in the powder spray bottle will clump due to absorbing moisture. After the cap 80 is pressed down, causing the cap 80 and the piston seat 60 to move downward, the clamping force provided by the abutment arms 3511 of the abutment tube 351 can keep the position of the drive rod 1204 stationary, so that the plug 12041 of the drive rod 1204 opens the seat channel 61 of the piston seat 60. As the cap 80 is pressed down further, the cap 80 drives the drive rod 1204 to move downward, so that the drive rod 1204 drives the upper drive tube 1202 to move downward. Optionally, in another example of the invention, the abutting arms 3511 of the abutting tube 351 may not clamp the drive rod 1204. During the pressing of the cap 80, as the cap 80 and the piston seat 60 move downward, the drive rod 1204 can move downward based on its own gravity. After the bottom of the drive rod 1204 abuts against the upper drive tube 1202, as the cap 80 and the piston seat 60 continue to move downward, the plug 12041 of the drive rod 1204 opens the seat channel 61 of the piston seat 60. Then, as the cap 80 and the piston seat 60 move further downward, the cap 80 drives the drive rod 1204 to move downward, so that the drive rod 1204 drives the upper drive tube 1202 to move downward.

[0076] Further, the air guide tube 50 includes a main air tube 52 and a connecting tube 53. The connecting tube 53 has a main pipe section 531 and a side pipe section 532 extending downward from the side of the main pipe section 531, such that the main pipe section 531 and the side pipe section 532 are misaligned. The main pipe section 531 is installed at the bottom of the main air tube 52. The air passage 51 of the air guide tube 50 extends from the top of the main air tube 52 to the bottom of the side pipe section 532 of the connecting tube 53. The inner cylinder 35 of the top cover 30 has a lower insertion post 352. The second top cover hole 32 is formed in the lower insertion post 352. The lower insertion post 352 is inserted into the pipe hole of the main air tube 52 to install the top of the main air tube 52 on the top cover 30. The air passage 51 of the air guide tube 50 communicates with the second top cover hole 32 of the top cover 30. The bottom cover body 24 of the bottom cover 20 has a second bottom cover insertion post 245, and a second bottom cover hole 22 is formed in the second bottom cover insertion post 245. The second bottom cover insertion post 245 is inserted into the pipe hole of the adapter pipe 53 to install the bottom of the side pipe section 532 of the adapter pipe 53 onto the bottom cover 20. The air pipe channel 51 of the air guide pipe 50 communicates with the second bottom cover hole 22 of the bottom cover 20. The specific structure of the air guide pipe 50 allows it to avoid the stirring arm 1102 of the stirring part 110, preventing the stirring arm 1102 from touching the air guide pipe 50.

[0077] Preferably, the main air pipe 52 and the powder guiding pipe 40 of the air guiding pipe 50 are integral. Preferably, the top of the powder guiding pipe 40 has a positioning disk 43 with multiple positioning holes 431, and the inner cylinder 35 of the top cover 30 has multiple positioning posts 353. Each positioning post 353 is inserted into a corresponding positioning hole 431 of the positioning disk 43 to prevent the powder guiding pipe 40 from rotating relative to the top cover 30.

[0078] Further, see attached document. Figure 2 , Figure 4 and Figure 5The powder spray bottle includes a bottle bottom 130, which is mounted on the bottom cover 20. The bottle bottom 130 and the powder bottle 10 cooperate with each other to make the bottom cover 20 visually invisible. In an embodiment of the present invention, the inner wall of the bottom cover skirt ring 26 of the bottom cover 20 is provided with two locking grooves 261. Each locking groove 261 has a circumferential extension section 2611 and a longitudinal extension section 3612 extending downward from one end of the circumferential extension section 2611 to the bottom edge of the bottom cover skirt ring 26. The bottle bottom 130 includes a bottom plate 1301, a bottom ring 1302 extending upward from the bottom plate 1301, and two locking protrusions 1303 disposed on the peripheral wall of the bottom ring 1302. The outer diameter of the bottom ring 1302 is the same as the inner diameter of the bottom cover skirt ring 26. After the protrusion 1303 is aligned with the longitudinal extension 2612 of the bottom cover skirt ring 26, the bottle bottom 130 is pushed upward, causing the bottom ring 1302 to insert into the interior of the bottom cover skirt ring 26. Then, the bottle bottom 130 is rotated, causing the locking protrusion 1303 to slide within the circumferential extension 2611 of the bottom cover skirt ring 26. In this way, the bottle bottom 130 is reliably installed on the bottom cover 20, and the bottom of the pink bottle 10 is attached to the bottom plate 1301 of the bottle bottom 130. Thus, the bottle bottom 130 and the pink bottle 10 cooperate to make the bottom cover 20 visually invisible. Furthermore, the powder sprayer includes a cap 140, which is detachably mounted on the shoulder cover 100, wherein after the cap 140 is mounted on the shoulder cover 100, the cap 140 covers the head cap 80, and after the cap 140 is removed, the head cap 80 can be pressed.

[0079] In an embodiment of the present invention, the elastic part 90 is a bellows, which forms the powder outlet channel 91. The elastic part 90, when compressed, can accumulate elastic potential energy to push the piston seat 60, the piston 70, and the cap 80 upwards. Specifically, the connecting pipe 641 of the upper seat 64 of the piston seat 60 has a first column 6411, and the inner cylinder 35 of the top cover 30 has a second column 354. The first column 6411 of the connecting pipe 641 is inserted into the top of the powder outlet channel 91 of the elastic part 90, and the second column 354 of the inner cylinder 35 is inserted into the bottom of the powder outlet channel 91 of the elastic part 90. Thus, the opposite ends of the elastic part 90 are reliably installed on the connecting pipe 641 of the upper seat 64 and the inner cylinder 35 of the top cover.

[0080] Appendix Figures 12 to 20The powder spraying process of the powder atomizer is illustrated. Specifically, in the first stage of pressing the cap 80, on the one hand, because the clamping force provided by the abutment arms 3511 of the abutment tube 351 ensures that the position of the drive rod 1204 remains unchanged, as the cap 80 and the piston seat 60 move downward, the plug 12041 of the drive rod 1204 opens the seat channel 61 of the piston seat 60. On the other hand, because there is a large frictional force between the peripheral wall of the piston 70 and the inner wall of the top cover 30, the piston 70 remains stationary. As the cap 80 and the piston seat 60 move downward, the piston 70 prevents the gas channel 62 of the piston seat 60 from connecting to the external environment. During this process, the elastic part 90 is compressed and deformed to accumulate elastic potential energy.

[0081] In the second stage of pressing the cap 80, on the one hand, the piston seat 60 drives the piston 70 to move downward and compress the piston chamber 33 of the top cover 30, so that the air in the piston chamber 33 of the top cover 30 flows sequentially through the second top cover hole 32 of the top cover 30, the air pipe channel 51 of the air guide pipe 50 and the second bottom cover hole 22 of the bottom cover 20 to reach the powder outlet 23, and carries the powder in the powder outlet 23 sequentially through the first bottom cover hole of the bottom cover 20. The powder is discharged to the outside through the cover hole 21, the powder tube channel 41 of the powder guide tube 40, the first top cover hole 31 of the top cover 30, the powder outlet channel 91 of the elastic part 90, the seat channel 61 of the piston seat 60, and the head cap channel 81 of the head cap 80, thus achieving the powder spraying effect of the powder sprayer. On the other hand, the head cap 80 drives the drive rod 1204 to move downward, so that the bottom of the drive rod 1204 can move to a position that abuts against the upper drive tube 1202. In other words, during this process, the drive rod 1204 does not drive the upper drive tube 1202 downward, the stirring part 110 does not rotate, and the stirring arm 1102 of the stirring part 110 remains in the position of closing the opening 231 of the powder outlet trough 23 of the bottom cover 20. This ensures that the airflow entering the powder outlet trough 23 from the second bottom cover hole 22 of the bottom cover 20 can blow the powder in the powder outlet trough 23 out only through the first bottom cover hole 21 of the bottom cover 20, the powder tube channel 41 of the powder guide tube 40, the first top cover hole 31 of the top cover 30, the powder outlet channel 91 of the elastic part 90, the seat channel 61 of the piston seat 60, and the head cap channel 81 of the head cap 80. In addition, during this process, the elastic part 90 is further compressed and deformed to accumulate elastic potential energy.

[0082] In the third stage of pressing the cap 80, on the one hand, the piston seat 60 drives the piston 70 to continue moving downward, further compressing the piston chamber 33 of the top cover 30 to enable the powder atomizer to continue spraying powder. On the other hand, the cap 80 pushes the upper drive tube 1202 and the lower drive tube 1201 downward via the drive rod 1204. The lower drive tube 1201 moves downward relative to the stirring part 110. Since the blocking vertical surface 423 of the drive ring 42 and the obstructed vertical surface 120122 of the driven column 12012 are in contact with each other, the lower drive tube 1201 will not rotate. Thus, the stirring arm 1102 of the stirring part 110 remains in the position of closing the opening 231 of the powder outlet 23 of the bottom cover 20. During this process, the elastic part 90 is further compressed and deformed to accumulate elastic potential energy, and the reset element 1203 is compressed and deformed to accumulate elastic potential energy.

[0083] In the fourth stage of pressing the cap 80, the upper drive tube 1202 and the lower drive tube 1201 move downwards until the driven inclined surface 120121 of the driven column 12012 is flush with the connection between the drive inclined surface 422 and the blocking vertical surface 423 of the drive ring 42. The blocking vertical surface 423 of the drive ring 42 and the obstructed vertical surface 120122 of the driven column 12012 are misaligned in the height direction, causing the drive ring 42 to no longer obstruct the lower drive tube 1201. At this time, the drive inclined surface 422 of the drive ring 42 and the driven inclined surface 120121 of the driven column 12012 cooperate with each other, allowing the lower drive tube 1201 and the stirring part 110 to rotate. After the connection between the driven inclined surface 120121 and the obstructed vertical surface 12012 of the driven column 12012 of the lower drive tube 1201 is rotated to the connection between the first inclined surface 12023 and the second inclined surface 12024 of the upper drive tube 1202, the upper drive tube 1202 prevents the lower drive tube 1201 from continuing to rotate. At this time, the rotation angle of the stirring part 110 is 30°, and the stirring arm 1102 of the stirring part 110 opens the slot 231 of the powder outlet trough 23 of the bottom cover 20, allowing the powder in the powder chamber 11 of the powder bottle 10 to enter the powder outlet trough 23 of the bottom cover 20 through the slot 231 of the powder outlet trough 23. During this process, the reset element 1203 is further compressed and deformed to accumulate elastic potential energy.

[0084] When the cap 80 is released, on the one hand, the reset element 1203 pushes the lower drive tube 1201 and the upper drive tube 1202 upward during the process of restoring the initial state. After the lower drive tube 1201 and the upper drive tube 1202 rotate to the position where the drive ramp 422 of the drive ring 42 abuts against the driven ramp 120121 of the driven column 12012 of the lower drive tube 1201, the drive ramp 422 of the drive ring 42 and the driven ramp 120121 of the driven column 12012 cooperate to allow the lower drive tube 1201 and the stirring part 110 to rotate. When the obstructed vertical surface 120122 of the driven column 12012 is in contact with the blocking vertical surface 423 of the drive ring 42, the drive ring 42 prevents the lower drive tube 1201 from continuing to rotate. At this time, the rotation angle of the stirring part 110 is 30°, and the stirring arm 1102 of the stirring part 110 closes the slot 231 of the powder outlet 23 of the bottom cover 20. On the other hand, as the elastic part 90 returns to its initial state, the piston seat 60 moves upward relative to the piston 70, causing the piston 70 to allow the gas passage 62 of the piston seat 60 to connect with the external environment. The elastic part 90 continues to push the piston seat 60 and the head cap 80 upward, and the piston seat 60 drives the piston 70 to move upward to expand the piston chamber 33 of the top cover 30. During this process, since the piston chamber 33 of the top cover 30 is always connected to the external environment through the gas passage 62 of the piston seat 60, the air from the external environment can be replenished to the piston chamber 33 of the top cover 30 in a timely and continuous manner. After the head cap 80, the piston 70 and the piston seat 60 are reset, the bottom of the abutment tube 351 of the inner cylinder 35 of the top cover 30 abuts against the abutment ring 12042 of the drive rod 1204, so as to ensure that the plug 12041 of the drive rod 1204 closes the seat channel 61 of the piston seat 60.

[0085] 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 objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A powder sprayer, characterized in that, include: A powder bottle, which has a powder chamber; A bottom cover is installed at the bottom of the powder bottle to close the bottom opening of the powder chamber. The bottom cover has a powder outlet groove and a first bottom cover hole and a second bottom cover hole respectively connected to the first powder outlet groove. The powder outlet groove is connected to the powder chamber. A top cover is installed on the top of the powder bottle to close the top opening of the powder chamber. The top cover has a piston chamber and a first top cover hole and a second top cover hole respectively communicating with the piston chamber. A powder guide tube having a powder tube channel, the powder tube channel being connected to the first bottom cover hole and the first top cover hole; An air duct having an air passage connecting the second bottom cover hole and the second top cover hole; A piston seat having a solid channel and at least one gas channel; A piston is movably mounted vertically on the piston seat and vertically on the piston chamber of the top cover. The peripheral wall of the piston is in contact with the inner wall of the top cover. The gas passage communicates with the piston chamber. As the piston and the piston seat move relative to each other, the piston can allow or prevent the gas passage from communicating with the external environment. A cap having a cap channel, the cap being mounted on the piston seat, the cap channel communicating with the seat body channel; An elastic part having a powder outlet channel is located inside the piston cavity, and the powder outlet channel connects the seat channel and the first top cover hole.

2. The powder atomizer according to claim 1, wherein the piston seat comprises a lower seat body and an upper seat body, the lower seat body comprising an insert tube and a bottom drive ring extending outward from the bottom or middle of the insert tube, the gas passage being disposed in the bottom drive ring, the upper seat body comprising a connecting tube and a top drive ring extending outward from the middle of the connecting tube, the seat body channel being disposed in the connecting tube, the top of the insert tube being inserted into the bottom of the connecting tube, the top drive ring being located above the bottom drive ring, and the piston seat being disposed between the bottom drive ring and the top drive ring. A movable groove is formed between the piston and the connecting pipe. The height of the movable groove is greater than the height of the piston. The inner diameter of the piston is greater than the outer diameter of the bottom of the connecting pipe. The inner diameter of the piston is smaller than the outer diameters of the bottom drive ring and the top drive ring. The piston is fitted onto the bottom of the connecting pipe. A gap is formed between the piston and the connecting pipe, and the gap is connected to the gas passage. As the piston and the piston seat move relative to each other, the bottom of the piston can fit against and move away from the bottom drive ring, and the top of the piston can move away from and fit against the top drive ring.

3. The powder sprayer of claim 2, wherein the powder sprayer includes a shoulder sleeve mounted on the top cover, the inner side of the shoulder sleeve extending above the top drive ring for limiting the maximum upward movement of the piston seat.

4. The powder sprayer according to claim 1, wherein the elastic part is a bellows forming the powder outlet channel, the bottom of the bellows being mounted on the top cover, and the top of the bellows being mounted on the piston seat, such that the powder outlet channel communicates with the seat channel and the first top cover hole.

5. The powder atomizer according to any one of claims 1 to 4, wherein the bottom cover body has an assembly shaft protruding into the powder cavity of the powder bottle, wherein the powder atomizer includes a stirring part, the stirring part including an assembly tube and at least one stirring arm extending outward from the bottom of the assembly tube, the assembly tube having an assembly hole, the assembly shaft of the bottom cover being inserted into the assembly hole of the assembly tube to hold the stirring part at the bottom of the powder cavity of the powder bottle by the bottom cover, wherein the stirring part is rotatable about the assembly shaft of the bottom cover.

6. The powder sprayer according to claim 5, wherein the bottom surface of the stirring arm of the stirring part is in contact with the top surface of the top cover, and as the stirring part rotates, the stirring arm is able to close and open the opening of the powder outlet groove of the bottom cover.

7. The powder sprayer of claim 6, wherein the stirring part is drivably connected to the cap, and the stirring part is drivable to rotate about the assembly axis of the bottom cover body when the cap is pressed and released.

8. The powder atomizer according to claim 7, wherein the powder atomizer comprises a driving unit, the driving unit comprising a lower driving tube, an upper driving tube, a reset element and a driving rod, wherein the lower driving tube has a first tube hole and a set of driven columns extending along the height direction, the top of the driven column is provided with a driven inclined surface and the side is provided with a blocked vertical surface, wherein the upper driving tube has a second tube hole and a set of guide columns arranged along the height direction, the bottom surface of the upper driving tube is serrated, which is formed by an alternating arrangement of a set of first inclined surfaces and a set of second inclined surfaces, the top of the lower driving tube is movably mounted to the second tube hole of the upper driving tube, the first tube hole and the second tube hole are in communication, wherein the inner wall of the powder guiding tube is provided with a driving ring, the driving ring has a set of guide grooves extending along the height direction, the bottom surface of the driving ring is formed by an alternating arrangement of a set of driving inclined surfaces and a set of blocking vertical surfaces, and the upper driving tube is movably mounted to the powder tube of the powder guiding tube. The channel, wherein the guide post of the upper drive tube protrudes into the guide groove of the drive ring, the blocking vertical surface of the drive ring corresponds to the middle part of the first inclined surface of the upper drive tube, the bottom surface of the upper drive tube corresponds to the inner side of the driven inclined surface of the driven column, the bottom surface of the drive ring corresponds to the outer side of the driven inclined surface, the blocked vertical surface of the driven column can fit against the blocking vertical surface of the drive ring, wherein the bottom of the lower drive tube is movably mounted on the assembly tube of the stirring part, and the first tube hole of the lower drive tube communicates with the first bottom cover hole of the bottom cover, so that the powder tube channel of the powder guide tube communicates with the first bottom cover hole of the bottom cover through the second tube hole of the upper drive tube and the first tube hole of the lower drive tube, wherein the bottom of the reset element abuts against the bottom cover, and the top abuts against the top of the lower drive tube, wherein the top of the drive rod is mounted on the head cap, and the bottom of the drive rod can abut against the bottom of the upper drive tube.

9. The powder sprayer according to claim 8, wherein the number of stirring arms in the stirring section is six, two of the stirring arms are arranged at equal intervals; the number of driven columns in the lower drive tube is three, three of the driven columns are arranged at equal intervals; the number of first inclined surfaces and the number of second inclined surfaces in the upper drive tube are both six, six of the first inclined surfaces are arranged at equal intervals, six of the second inclined surfaces are arranged at equal intervals; the number of driving inclined surfaces and the number of blocking vertical surfaces in the driving ring of the powder guide tube are both six, six of the driving inclined surfaces are arranged at equal intervals, and six of the blocking vertical surfaces are arranged at equal intervals.

10. The powder sprayer according to claim 8, wherein the bottom cover body of the bottom cover has a first bottom cover insert post, the first bottom cover hole is formed in the first bottom cover insert post, the first bottom cover insert post extends into the first tube hole of the lower drive tube, and the peripheral wall of the first bottom cover insert post fits against the inner wall of the lower drive tube, so that the first tube hole of the lower drive tube communicates with the first bottom cover hole of the bottom cover.

11. The powder sprayer according to claim 8, wherein the inner cylinder of the top cover has a stop tube protruding into the powder cavity of the powder bottle, the stop tube forming the first top cover hole of the top cover, the bottom of the stop tube having a plurality of stop arms and a plurality of tube grooves, one of the tubes being formed between two adjacent stop arms, the tube groove communicating with the first top cover hole, the stop tube being inserted into the powder tube channel of the powder guide tube to communicate with the first top cover hole, and the drive rod... The drive rod has a plug at the top and a stop ring in the middle. The middle part of the drive rod is held in the seat channel of the piston seat, the powder outlet channel of the elastic part, the first top cover hole of the top cover, and the powder tube channel of the powder guide tube. The plug of the drive rod is configured to close the seat channel of the piston seat. The bottom of the stop tube can abut against the stop ring of the drive rod. After the bottom of the stop tube abuts against the stop ring of the drive rod, the plug closes the seat channel of the piston seat.

12. The powder sprayer of claim 11, wherein after the plug of the drive rod closes the seat channel of the piston seat, the distance between the top of the drive rod and the inner wall of the cap is less than the distance between the bottom of the drive rod and the upper drive tube.

13. The powder sprayer according to claim 5, wherein the air guide tube includes a main air tube and a connecting tube, the connecting tube having a main pipe section and a side pipe section extending downward from the side of the main pipe section, such that the main pipe section and the side pipe section are misaligned, the main pipe section is installed at the bottom of the main air tube, the air passage of the air guide tube extends from the top of the main air tube to the bottom of the side pipe section of the connecting tube, the inner cylinder of the top cover has a downward insert post, and the second top cover hole is formed in the downward insert post. The lower insert post is inserted into the pipe hole of the main air pipe to install the top of the main air pipe onto the top cover 3, and the air pipe channel of the air guide pipe communicates with the second top cover hole of the top cover. The bottom cover body of the bottom cover has a second bottom cover insert post, and the second bottom cover hole is formed in the second bottom cover insert post. The second bottom cover insert post is inserted into the pipe hole of the adapter pipe to install the bottom of the side pipe section of the adapter pipe onto the bottom cover, and the air pipe channel of the air guide pipe communicates with the second bottom cover hole of the bottom cover.

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