Powder particle spraying device

Abstract

The invention discloses a powder particle spraying device. Comprising a shell, an inner cover body, an elastic sliding piece and a pressing air supply part, a spraying opening is formed in the front end of the shell, and a material bottle connector is arranged outside; the inner cover body is inserted into the rear end of the shell and limited in the shell, and a material storage section is arranged in the inner cover body; the elastic sliding piece is inserted into the rear end of the inner cover body and slides in the inner cover body, and a storage cavity is defined by the elastic sliding piece and the storage section. The pressing air supply part is installed at the rear end of the inner cover body and abuts against the elastic sliding piece. When being pressed, the elastic sliding piece is pushed to move from a first position to a second position in a compression manner, and pressing airflow flowing towards the material storage cavity is generated; when the elastic sliding piece is located at the first position, the material storage cavity is communicated with the material bottle connector; when the elastic sliding part is located at the second position, the storage cavity is communicated with the spraying opening. Through a position switching mechanism before and after pressing, it is ensured that the amount of powder particles stored in the material storage cavity in each pressing operation is consistent, the airflow pushing and spraying process is stable, and uniform control over the single-time spraying amount is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a powder particle spraying device. Background Art

[0002] In medical practice and laboratory research, the local delivery of powder particles (for applications such as wound therapy, tissue engineering, or drug coating) is an important and common technique. Powder particles play a key role in various scenarios due to their wide availability, ability to carry a variety of active ingredients, and adaptability to various forms (e.g., powdered and microsphere-like).

[0003] However, when spraying such powder particles onto a target area (such as a wound surface, tissue surface, or a specific carrier), existing technologies generally face the problem of difficulty in controlling the amount of spraying each time, resulting in uneven distribution of powder particles in the target area. At the same time, the difficulty in controlling the amount of spraying each time may also cause local insufficient or excessive particles, thereby increasing potential risks. In addition, to achieve the desired coverage or dosage, operators often need to spray repeatedly, which not only prolongs the operation time and reduces efficiency, but also easily causes problems such as loss of control over the spraying range or excessive spraying. Summary of the Invention

[0004] The object of the present invention is to provide a powder particle spraying device, aiming to solve the problem of uneven single spraying amount of existing devices for delivering powder particles.

[0005] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: providing a powder particle spraying device, comprising:

[0006] The shell is hollow inside and has a spray port at the front and a bottle interface on the outside;

[0007] An inner cover body is inserted into the rear end of the outer shell and is limited to the interior of the outer shell, and a material storage section is provided inside the inner cover body;

[0008] An elastic sliding member is inserted into the rear end of the inner cover body and slides inside the inner cover body, and is enclosed with the material storage section to form a material storage cavity;

[0009] A pressing air supply portion is installed at the rear end of the inner cover and abuts against the elastic sliding member; and is used to push the elastic sliding member to move from a first position to a second position when pressed, and generate a pressing air flow toward the storage cavity;

[0010] Wherein, when the elastic sliding member is located at the first position, the material storage cavity is communicated with the material bottle interface; when the elastic sliding member is located at the second position, the material storage cavity is communicated with the spraying port.

[0011] Furthermore, the material storage section of the inner cover is a non-closed cavity with the top and bottom communicating with each other;

[0012] The elastic sliding member is provided with a first enclosing portion and a second enclosing portion, and the first enclosing portion and the second enclosing portion are respectively located at the top and the bottom of the material storage section;

[0013] When the elastic sliding member is located at the first position, the first enclosing portion is opened to drive the material storage cavity to communicate with the material bottle interface;

[0014] When the elastic sliding member is located at the second position, the second enclosing portion is opened to drive the material storage cavity to communicate with the spraying port.

[0015] Furthermore, the elastic sliding member includes:

[0016] The movement has a front end sliding limit located inside the inner cover body and a rear end located outside the rear end of the inner cover body;

[0017] an elastic member, mounted on the rear end of the movement and elastically compressed when the movement moves forward;

[0018] a sliding block, the rear end of which is mounted on the movement;

[0019] The front end of the movement and the front end of the sliding block form the first enclosed portion and the second enclosed portion.

[0020] Furthermore, a first connecting portion is provided at the rear end of the sliding block, a second connecting portion is provided on the movement, and the sliding block and the movement are connected via the first connecting portion and the second connecting portion.

[0021] Furthermore, a communication opening is provided on the first enclosing portion;

[0022] When the elastic sliding member is located at the first position, the material storage cavity is communicated with the material bottle interface through the communication port;

[0023] When the elastic sliding member is located at the second position, the material storage cavity is isolated from the material bottle interface.

[0024] Furthermore, the sliding block is a groove structure with a receiving space on its surface;

[0025] When the elastic sliding member is located at the first position, the material storage cavity is isolated from the spraying port;

[0026] When the elastic sliding member is located at the second position, the sliding block storage cavity is communicated with the spraying port through the sliding block accommodating space.

[0027] Furthermore, the elastic member includes a compression spring sleeved on the movement.

[0028] Furthermore, the pressing air supply portion includes an air bag; the opening of the air bag is connected to the rear end of the inner cover body and communicates with the storage cavity;

[0029] When the airbag is pressed, the elastic sliding member is pushed to move in compression from the first position to the second position, and a pressing airflow is generated that flows toward the material storage cavity.

[0030] Furthermore, the outer shell is provided with a card interface, the inner cover is provided with a buckle, and the inner cover is connected to the card interface through the buckle to be limited to be located inside the outer shell.

[0031] Furthermore, the particle size of the powder particles ranges from 1 to 3000 microns.

[0032] The beneficial effects of the embodiments of the present invention are as follows: in the initial state, the elastic slider is in the first position, at which point the storage chamber is connected to the external bottle via the bottle interface, and powder particles enter the storage chamber from the bottle interface and are stored therein. When the user presses the air supply portion, the pressing action pushes the elastic slider to compress and move from the first position to the second position, while the pressing of the air supply portion generates a pressing airflow flowing toward the storage chamber. During the movement of the elastic slider to the second position, the connection between the storage chamber and the bottle interface is cut off, and the storage chamber is connected to the spray port at the front end of the housing. At this time, the pressing airflow evenly sprays the powder particles in the storage chamber through the spray port. Subsequently, when the pressing action is released, the elastic slider elastically returns to the first position, and the storage chamber is reconnected to the bottle interface, and then switched back to the connection with the bottle interface. At this time, powder particles once again enter the storage chamber from the bottle interface and are stored therein. In this way, through the position switching mechanism before and after pressing, the amount of powder particles stored in the storage chamber is consistent in each pressing operation, and the airflow drives the spraying process to be stable, thereby achieving highly uniform control of the single spraying amount, avoiding the dosage fluctuation caused by unstable filling or spraying in traditional devices, and improving the reliability of the spraying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic diagram of the overall structure of a powder particle spraying device provided in an embodiment of the present invention.

[0035] Figure 2 This is a schematic structural diagram of a cross section of a powder particle spraying device provided by an embodiment of the present invention (the elastic sliding member is located in the first position).

[0036] Figure 3 This is a schematic structural diagram of a cross section of a powder particle spraying device provided by an embodiment of the present invention (the elastic sliding member is located in the second position).

[0037] Figure 4 A schematic diagram of a partial structure of a powder particle spraying device provided in an embodiment of the present invention.

[0038] Figure 5 for Figure 4 Schematic diagram of the explosion structure from the first perspective.

[0039] Figure 6 for Figure 4 Schematic diagram of the explosion structure from the second perspective.

[0040] Figure 7 This is a schematic diagram of the assembly structure of the movement and the sliding block provided in an embodiment of the present invention.

[0041] Figure 8 This is a schematic diagram of the assembly structure of the hybrid connector and the bottle provided in an embodiment of the present invention.

[0042] Description of the symbols in the figure:

[0043] 1. Shell; 11. Spray port; 12. Bottle interface; 13. Extension piece;

[0044] 2. Inner cover; 21. Non-closed cavity; 22. Entrance; 23. Buckle;

[0045] 3. Elastic sliding member; 31. Movement; 311. Communication port; 312. Second connecting portion; 32. Sliding block; 321. First connecting portion; 33. Elastic member;

[0046] 4. Press the air supply part;

[0047] 5. Hybrid connector; 51. Protrusion;

[0048] 6. Material bottle. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0051] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0052] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0053] See also Figures 1 to 4 , an embodiment of the present invention provides a powder particle spraying device, comprising:

[0054] The shell 1 is hollow inside and has a spray port 11 at the front and a bottle interface 12 on the outside;

[0055] The inner cover 2 is inserted into the rear end of the outer shell 1 and is limited to the interior of the outer shell 1. A material storage section is provided inside the inner cover 2;

[0056] The elastic sliding member 3 is inserted into the rear end of the inner cover body 2 and slides inside the inner cover body 2, and is enclosed with the material storage section to form a material storage cavity;

[0057] The pressing air supply portion 4 is installed at the rear end of the inner cover 2 and abuts against the elastic sliding member 3; it is used to push the elastic sliding member 3 from the first position to the second position when pressed, and generate a pressing air flow toward the storage chamber;

[0058] When the elastic sliding member 3 is located at the first position, the material storage chamber is communicated with the material bottle interface 12 ; when the elastic sliding member 3 is located at the second position, the material storage chamber is communicated with the spraying port 11 .

[0059] In this embodiment, in the initial state, the elastic slider 3 is in the first position. The storage chamber is connected to the external bottle 6 (for holding powder particles) via the bottle interface 12. Powder particles enter the storage chamber from the bottle interface 12 and are stored therein. When the user presses the air supply portion 4, the pressing action compresses and moves the elastic slider 3 from the first position to the second position. Simultaneously, the pressing action generates a pressing airflow toward the storage chamber. During the movement of the elastic slider 3 to the second position, the storage chamber is disconnected from the bottle interface 12 and is instead connected to the spray port 11 at the front end of the housing 1. At this point, the pressing airflow uniformly sprays the powder particles within the storage chamber through the spray port 11. Subsequently, when the pressing action is released, the elastic slider 3 elastically returns to the first position, reconnecting the storage chamber to the bottle interface 12. Powder particles then enter the storage chamber from the bottle interface 12 and are stored therein. In this way, through the position switching mechanism before and after pressing, the amount of powder particles stored in the storage chamber is consistent in each pressing operation, and the airflow drives the spraying process to be stable, thereby achieving highly uniform control of the single spraying amount, avoiding the dosage fluctuation caused by unstable filling or spraying in traditional devices, and improving the reliability of the spraying device.

[0060] In some embodiments, the device is suitable for spraying powder particles with various particle size ranges, which may be powder particles with a particle size range of 1-3000 microns.

[0061] Preferably, the powder particles may have a particle size range of 100-1000 microns.

[0062] Furthermore, the present application can be provided with a plurality of specifications of pressing air supply parts 4, and pressing air supply parts 4 of different specifications can generate pressing airflows of different sizes; based on this, when spraying powder particles of larger particle size, a pressing air supply part 4 that generates a larger pressing airflow can be selected to ensure that the powder particles can be effectively blown away and sprayed evenly. When spraying powder particles of smaller particle size, a pressing air supply part 4 that generates a smaller pressing airflow can be selected to avoid problems such as excessive blowing leading to powder loss or uneven spraying. This design enables the present device to adapt to the spraying needs of powder particles of different particle size, thereby improving its practicality and flexibility.

[0063] See also Figure 2 , the housing 1 of the present application is described in detail below.

[0064] In one embodiment, the front end of the shell 1 has a gradually shrinking sandblasting port, the rear end of the shell 1 is an insertion port, and the front end of the inner cover 2 can be inserted into the interior of the shell 1 through the insertion port at the rear end of the shell 1.

[0065] In one embodiment, the bottle interface 12 on the outer side of the housing 1 is adapted to the bottle mouth of the bottle 6 , and the bottle 6 can be stably mounted in the bottle interface 12 .

[0066] Combine Figure 3 and Figure 4 In one embodiment, the outer shell 1 is provided with a snap interface, and the inner cover 2 is provided with a snap 23. The inner cover 2 is snapped into the snap interface via the snap 23 to be retained within the outer shell 1. The snap fit prevents the inner cover 2 from shifting during operation and allows for easy detachment for cleaning or maintenance.

[0067] In one embodiment, an extension piece 13 is further provided at the rear end of the housing 1 toward the outside. The extension piece 13 is used to assist an operator in operating the device by holding it with one hand.

[0068] Combine Figures 4 to 6 , the inner cover body 2 of the present application is introduced in detail below.

[0069] In one embodiment, the storage section of the inner cover body 2 is a non-closed cavity 21 that passes through the top and bottom; the elastic sliding member 3 is provided with a first enclosing portion and a second enclosing portion, and the first enclosing portion and the second enclosing portion are respectively located at the top and bottom of the storage section; when the elastic sliding member 3 is in the first position, the first enclosing portion opens to drive the storage cavity to communicate with the bottle interface 12; when the elastic sliding member 3 is in the second position, the second enclosing portion opens to drive the storage cavity to communicate with the spray port 11.

[0070] In the present embodiment, the storage section of the inner cover body 2 is designed as a non-closed cavity 21 that is connected to the top and the bottom. The top corresponding to the storage section is an entrance 22, and the bottom corresponding to the storage section is a hollow structure. The first enclosure and the second enclosure of the elastic slider 3 are respectively located at the top and the bottom of the storage section. When the elastic slider 3 is in the first position, the first enclosure is in an open state, so that the storage chamber is connected to the bottle interface 12 through the top, and the powder particles can flow smoothly into the storage chamber for filling. When the user presses the air supply part 4 to push the elastic slider 3 to the second position, the first enclosure is closed to isolate the bottle interface 12, and the second enclosure is opened at the same time, so that the storage chamber is connected to the spray port 11 through the bottom, and the powder particles are sprayed out under the action of the airflow. Based on this, through the mechanical switching action of the first enclosure and the second enclosure, the opening and closing of the storage chamber are controlled respectively during the filling and spraying stages, preventing leakage of powder particles or external contamination, while ensuring that the storage chamber reaches the same volume each time it is filled, further enhancing the uniformity and consistency of the single spraying amount, and reducing operational errors.

[0071] In one embodiment, the rear end of the inner cover body 2 is further provided with an extension portion corresponding to the extension piece 24 toward the outside, so as to facilitate accurate installation of the inner cover body 2 .

[0072] The elastic sliding member 3 of the present application is described in detail below.

[0073] In one embodiment, the elastic sliding member 3 includes a movement 31, an elastic member 33 and a sliding block 32; the front end sliding limit of the movement 31 is located inside the inner cover body 2, and the rear end of the movement 31 is located outside the rear end of the inner cover body 2; the elastic member 33 is installed on the rear end of the movement 31, and when the movement 31 moves forward, the elastic member 33 is elastically compressed; the rear end of the sliding block 32 is installed on the movement 31; wherein, the front end of the movement 31 and the front end of the sliding block 32 form a first enclosed portion and a second enclosed portion.

[0074] In this embodiment, the movement 31 is limited in sliding movement inside the inner cover body 2, the rear end of the movement 31 extends to the outside of the rear end of the inner cover body 2, the rear end of the sliding block 32 is fixed to the movement 31, and the elastic member 33 (such as a compression spring) is mounted on the rear end of the movement 31. When the user does not press, the elastic member 33 keeps the movement 31 and the sliding block 32 in the first position, and the front end of the movement 31 and the front end of the sliding block 32 together form a first enclosure and a second enclosure, maintaining the filling state of the storage chamber. When the air supply portion 4 is pressed, the movement 31 is pushed forward and the elastic member 33 is compressed, and the movement 31 and the sliding block 32 move synchronously to the second position, and the enclosure switches to a connected state. Based on this, the integrated design of the movement 31, the sliding block 32 and the elastic member 33 provides a smooth and resettable sliding motion. The compression of the elastic member 33 stores energy, and when released, the auxiliary device quickly returns to the first position, ensuring that the stroke of each spraying cycle is fixed, thereby maintaining the volume of the storage chamber stable, effectively supporting the uniform control of the single spraying amount, and improving the durability of the device.

[0075] Combine Figure 7 As shown, in one embodiment, a first connecting portion 321 is provided at the rear end of the sliding block 32 , a second connecting portion 312 is provided on the movement 31 , and the sliding block 32 and the movement 31 are connected via the first connecting portion 321 and the second connecting portion 312 .

[0076] In this embodiment, the second connection portion 312 at the rear end of the sliding block 32 is plugged or engaged with the first connection portion 321 on the movement 31, thereby firmly securing the sliding block 32 to the movement 31. During movement of the elastic slider 3, this connection structure ensures that the sliding block 32 and the movement 31 move synchronously as a whole, preventing relative displacement. Based on this, the connection between the first connection portion 321 and the second connection portion 312 enhances the structural stability of the assembly, preventing the sliding block 32 from loosening or shifting during operation. Furthermore, the first connection portion 321 and the second connection portion 312 can adopt a structure such as a snap-fit ​​or plug-in connection.

[0077] In one embodiment, a communication port 311 is provided on the first enclosing portion; when the elastic sliding member 3 is in the first position, the material storage cavity and the material bottle interface 12 are connected through the communication port 311; when the elastic sliding member 3 is in the second position, the material storage cavity and the material bottle interface 12 are isolated.

[0078] In this embodiment, when the elastic sliding member 3 is in the first position, the communication port 311 on the first enclosing portion directly connects the storage cavity and the bottle interface 12 (i.e., the communication port 311, the inlet port 22 and the bottle interface 12 are correspondingly connected), and the powder particles can flow into the storage cavity through the communication port 311 (refer to Figure 2 When the elastic sliding member 3 moves to the second position, the communication port 311 on the first enclosure moves accordingly, and the storage cavity and the bottle interface 12 are sealed by the non-communication port position of the first enclosure, so that the bottle interface 12 and the inlet 22 are completely isolated from the storage cavity (refer to Figure 3 ).

[0079] In one embodiment, the sliding block 32 is a groove structure with a accommodating space on the surface; when the elastic sliding member 3 is in the first position, the storage cavity is isolated from the spraying port 11; when the elastic sliding member 3 is in the second position, the storage cavity of the sliding block 32 and the spraying port 11 are connected through the accommodating space of the sliding block 32.

[0080] In this embodiment, the surface of the sliding block 32 is designed as a groove structure with a accommodating space. When the elastic sliding member 3 is in the first position, the accommodating space is the bottom space of the storage chamber and ensures that the bottom of the storage chamber is sealed; and when the elastic sliding member 3 moves to the second position, the sliding block 32 moves accordingly, so that the accommodating space on the surface of the sliding block 32 is offset from the bottom of the storage chamber and connected to the spraying port 11. At this time, the entire storage chamber will be connected to the spraying port 11; in this way, with the push of the airflow, the powder particles in the entire storage chamber can be sprayed out from the spraying port 11.

[0081] In one embodiment, the pressing air supply portion 4 includes an airbag; the opening of the airbag is connected to the rear end of the inner cover body 2 and is communicated with the storage cavity; when the airbag is pressed, the elastic sliding member 3 is pushed to compress and move from the first position to the second position, and a pressing airflow is generated that flows toward the storage cavity.

[0082] In this embodiment, the opening of the airbag is connected to the rear end of the inner cover 2 via a thread, and the opening of the airbag is connected to the storage chamber (i.e., air flow can circulate). When the user squeezes the airbag, the airbag deforms. As the airbag deforms, on the one hand, it abuts against the rear end of the elastic sliding member 3, pushing the elastic sliding member 3 from the first position to the second position through the deformation force. On the other hand, the deformed airbag can generate a pressing airflow, which flows into the storage chamber and can spray the powder particles in the storage chamber through the spraying port 11.

[0083] In this embodiment, the airbag serves as a simple air source and can generate a stable and controllable airflow to push the powder particles to be sprayed evenly. Its flexible design is easy to operate, ensuring that the airflow intensity generated by each press is consistent. It works in conjunction with the fixed volume of the storage chamber to achieve precise and uniform control of the single spraying amount and reduce the influence of human factors.

[0084] See also Figure 8 In one embodiment, the powder particle spraying device further comprises a mixing connector 5, which is provided with two docking ports for clamping the material bottles 6 to be mixed; when the two material bottles 6 are clamped in the two docking ports, they are sealed and connected to each other.

[0085] In this embodiment, the mixing connector 5 has two docking ports. These ports are designed to engage with protrusions 51 on the outer edge of the mouth of a bottle 6. Each port can accommodate a bottle 6. When two bottles 6 are engaged, they communicate with each other through a sealed interface, allowing powder particles to mix between the bottles. After mixing, the mixed powder particles are connected to the device through the bottle port 12 for use. This allows for the spraying of two-component or multi-component powder particles.

[0086] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A powder particle spraying device, characterized in that: include: shell; The interior is hollow with a spray port at the front and a bottle interface on the outside; An inner cover body is inserted into the rear end of the outer shell and is limited to the interior of the outer shell, and a material storage section is provided inside the inner cover body; An elastic sliding member is inserted into the rear end of the inner cover body and slides inside the inner cover body, and is enclosed with the material storage section to form a material storage cavity; A pressing air supply portion is installed at the rear end of the inner cover and abuts against the elastic sliding member; and is used to push the elastic sliding member to move from a first position to a second position when pressed, and generate a pressing air flow toward the storage cavity; Wherein, when the elastic sliding member is located at the first position, the material storage cavity is communicated with the material bottle interface; when the elastic sliding member is located at the second position, the material storage cavity is communicated with the spraying port.

2. The powder particle spraying device according to claim 1, characterized in that: The material storage section of the inner cover is a non-closed cavity with the top and bottom connected; The elastic sliding member is provided with a first enclosing portion and a second enclosing portion, and the first enclosing portion and the second enclosing portion are respectively located at the top and the bottom of the material storage section; When the elastic sliding member is located at the first position, the first enclosing portion is opened to drive the material storage cavity to communicate with the material bottle interface; When the elastic sliding member is located at the second position, the second enclosing portion is opened to drive the material storage cavity to communicate with the spraying port.

3. The powder particle spraying device according to claim 2, characterized in that: The elastic sliding member comprises: The movement has a front end sliding limit located inside the inner cover body and a rear end located outside the rear end of the inner cover body; an elastic member, mounted on the rear end of the movement and elastically compressed when the movement moves forward; a sliding block, the rear end of which is mounted on the movement; The front end of the movement and the front end of the sliding block form the first enclosed portion and the second enclosed portion.

4. The powder particle spraying device according to claim 3, characterized in that: A first connecting portion is provided at the rear end of the sliding block, a second connecting portion is provided on the movement, and the sliding block and the movement are connected via the first connecting portion and the second connecting portion.

5. The powder particle spraying device according to claim 3, characterized in that: The first enclosing portion is provided with a communication opening; When the elastic sliding member is located at the first position, the material storage cavity is communicated with the material bottle interface through the communication port; When the elastic sliding member is located at the second position, the material storage cavity is isolated from the material bottle interface.

6. The powder particle spraying device according to claim 3, characterized in that: The sliding block is a groove structure with a receiving space on its surface; When the elastic sliding member is located at the first position, the material storage cavity is isolated from the spraying port; When the elastic sliding member is located at the second position, the sliding block storage cavity is communicated with the spraying port through the sliding block accommodating space.

7. The powder particle spraying device according to claim 3, characterized in that: The elastic member comprises a compression spring sleeved on the movement.

8. The powder particle spraying device according to claim 1, characterized in that: The pressing air supply portion includes an air bag; the opening of the air bag is connected to the rear end of the inner cover body and communicates with the storage cavity; When the airbag is pressed, the elastic sliding member is pushed to move in compression from the first position to the second position, and a pressing airflow is generated that flows toward the material storage cavity.

9. The powder particle spraying device according to claim 1, characterized in that: The outer shell is provided with a card interface, and the inner cover is provided with a buckle. The inner cover is connected to the card interface through the buckle to be limited to be located inside the outer shell.

10. The powder particle spraying device according to claim 1, characterized in that: The particle size of the powder particles ranges from 1 to 3000 microns.

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