A spiral feeding mechanism for a spraying machine

Abstract

The present invention relates to a spiral feeding mechanism for a spraying machine, comprising a conveying screw and a conveying pipe, wherein the conveying screw is rotatably arranged in the conveying pipe to convey combustible powder from one end of the conveying pipe to the other end of the conveying pipe, and one or more ventilation grooves are provided on the upper portion of the conveying pipe for air to enter so that the combustible powder burns in the air. During the operation of the spraying machine, although the combustible powder will adhere to the groove walls of the ventilation grooves, since the ventilation grooves have a long longitudinal depth and the conveying screw of the spiral feeding mechanism continuously moves, the combustible powder overflowing from the conveying pipe of the spiral feeding mechanism will scrape off the combustible powder adhering to the groove walls of the ventilation grooves during directional movement and be brought into the conveying pipe of the spiral feeding mechanism again. Compared with small circular holes, siltation is less likely to occur, thereby eliminating the problem that the ventilation holes will be completely blocked, causing abnormal operation of the spraying machine.

Description

Technical Field

[0001] The invention relates to the technical field of cold flame eruption, in particular to a spiral feeding mechanism of a flower spraying machine. Background Art

[0002] Spray guns are used in various stage performances, setting off cold fireworks to enhance the atmosphere and bring the performance to a climax, achieving excellent stage effects. The existing spiral feed mechanism of spray guns heats the combustible powder to above its ignition point before feeding it into the spray gun tube. To ensure that the combustible powder burns in air, a vent hole is required in the upper portion of the spiral feed tube.

[0003] Current vents are simple circular structures with no protection above them. This can cause combustible powder to adhere to the vent walls during operation, completely clogging the vents and causing the machine to malfunction. Furthermore, after prolonged operation, the insulation material above the vents can fall off, posing a risk of clogging the vents. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that combustible powder adheres to and completely blocks the vent holes during the operation of the spray machine, causing the spray machine to work abnormally.

[0005] In order to solve the above technical problems, the present invention provides a spiral feeding mechanism of a spray machine, including a conveying screw and a conveying pipe. The conveying screw can be rotatably arranged in the conveying pipe to transport combustible powder from one end of the conveying pipe to the other end of the conveying pipe. One or more ventilation grooves are opened on the upper part of the conveying pipe for air to enter, so that the combustible powder burns in the air.

[0006] Furthermore, the ventilation groove is in the shape of an elongated strip.

[0007] Furthermore, the width of the ventilation groove is 2 mm.

[0008] Furthermore, the length of the ventilation groove is 5 to 10 mm.

[0009] Furthermore, two groups of ventilation grooves are arranged side by side.

[0010] Furthermore, a protective tube is provided on the outer shell of the conveying pipe of the spiral conveying mechanism, and the inner diameter of the protective tube is larger than the outer diameter of the conveying pipe of the spiral conveying mechanism.

[0011] Furthermore, a ventilation gap is formed between the protection tube and the conveying tube of the spiral feeding mechanism, and the distance of the ventilation gap is 1 to 2 mm.

[0012] Furthermore, the protection tube is made of heat-resistant material.

[0013] Furthermore, the protection tube is made of ceramic.

[0014] The above technical solution of the present invention has the following advantages: during the operation of the spray machine, although the combustible powder will adhere to the groove wall of the ventilation groove, since the ventilation groove has a long longitudinal depth, the conveying spiral of the spiral feeding mechanism will continuously move, which will cause the combustible powder overflowing from the conveying pipe of the spiral feeding mechanism to scrape off the combustible powder adhering to the groove wall of the ventilation groove during directional movement, and bring it into the conveying pipe of the spiral feeding mechanism again. Compared with the small round hole, it is not easy to accumulate, thereby eliminating the problem that the ventilation hole will be completely blocked, causing abnormal operation of the spray machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a spiral feeding mechanism of a spraying machine according to the present invention;

[0016] In the figure: 1. Conveying pipe; 2. Conveying screw; 3. Ventilation groove; 4. Protective tube. DETAILED DESCRIPTION

[0017] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0020] Please refer to Figure 1In the embodiment, a spiral feeding mechanism of a spraying machine is provided, comprising a conveying screw 2 and a conveying pipe 1. The conveying screw 2 is rotatably arranged in the conveying pipe 1 to convey the combustible powder from one end of the conveying pipe 1 to the other end of the conveying pipe 1. One or more ventilation grooves 3 are provided on the upper part of the conveying pipe 1 for air to enter so that the combustible powder burns in the air. During the operation of the spraying machine, although the combustible powder will adhere to the groove wall of the ventilation groove 3, since the ventilation groove 3 has a long longitudinal depth, the conveying screw 2 of the spiral feeding mechanism is constantly moving, and the combustible powder overflowing from the conveying pipe 1 of the spiral feeding mechanism will scrape off the combustible powder adhering to the groove wall of the ventilation groove 3 during the directional movement, and be brought into the conveying pipe 1 of the spiral feeding mechanism again. Compared with the small round hole, it is not easy to be silted up, thereby eliminating the problem that the ventilation hole will be completely blocked, causing the spraying machine to work abnormally.

[0021] In some embodiments, the ventilation groove 3 is in the shape of an elongated strip, and a notch can be milled out on the conveying pipe 1 of the spiral conveying mechanism by a milling cutter, and the processing technology is simple.

[0022] In some embodiments, the width of the ventilation groove 3 is 2 mm, which is an appropriate width that is not prone to clogging and can ensure ventilation effect.

[0023] In some embodiments, the length of the vent groove 3 is 5 to 10 mm, which is an appropriate length that can neither maintain the structural strength of the conveying pipe 1 of the spiral conveying mechanism nor ensure that it has sufficient depth.

[0024] In some embodiments, two groups of the ventilation grooves 3 are arranged side by side, and a connecting rib plate is provided between the two groups, which can better ensure the structural strength of the conveying pipe 1 of the spiral feeding mechanism.

[0025] In some embodiments, a protective tube 4 is provided on the outer sleeve of the conveying pipe 1 of the spiral conveying mechanism, and the inner diameter of the protective tube 4 is larger than the outer diameter of the conveying pipe 1 of the spiral conveying mechanism, thereby protecting the conveying pipe 1 of the spiral conveying mechanism and preventing the detached insulation layer material from falling into the conveying pipe 1 of the spiral conveying mechanism and blocking the ventilation groove 3.

[0026] In some embodiments, a ventilation gap is formed between the protection tube 4 and the conveying tube 1 of the spiral conveying mechanism. The distance of the ventilation gap is 1 to 2 mm, which can ensure sufficient air circulation.

[0027] In some embodiments, the protection tube 4 is made of heat-resistant material to prevent the protection tube 4 from being deformed or melted during the heating process of the conveying tube 1 of the spiral conveying mechanism.

[0028] In some embodiments, the protective tube 4 is made of ceramic, which has good heat resistance.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A spiral feeding mechanism of a spraying machine, characterized in that : It includes a conveying screw and a conveying pipe. The conveying screw can be rotatably arranged in the conveying pipe to convey the combustible powder from one end of the conveying pipe to the other end of the conveying pipe. One or more ventilation grooves are opened on the upper part of the conveying pipe for air to enter so that the combustible powder burns in the air. The ventilation groove is long and narrow, the width of the ventilation groove is 2mm, and the length of the ventilation groove is 5~10mm.

2. The spiral feeding mechanism of a spraying machine according to claim 1, characterized in that: The ventilation grooves are arranged in two groups side by side.

3. The spiral feeding mechanism of a spraying machine according to claim 1, characterized in that: A protective tube is provided on the outer shell of the conveying pipe of the spiral conveying mechanism, and the inner diameter of the protective tube is larger than the outer diameter of the conveying pipe of the spiral conveying mechanism.

4. The spiral feeding mechanism of a spraying machine according to claim 3, characterized in that: A ventilation gap for air flow to pass through is formed between the protection tube and the conveying tube of the spiral conveying mechanism.

5. The spiral feeding mechanism of a spraying machine according to claim 4, characterized in that: The distance of the ventilation gap is 1-2 mm.

6. The spiral feeding mechanism of a spraying machine according to claim 3, characterized in that: The protection tube is made of heat-resistant material.

7. The spiral feeding mechanism of a spraying machine according to claim 6, characterized in that: The protection tube is made of ceramic.

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