Flame spraying barrel capable of achieving uniform combustion

Abstract

The utility model relates to the technical field of winding plastic pipe production, and discloses a uniform-combustion flame spraying barrel which comprises a spraying barrel body, and the spraying barrel body comprises a base, a cavity, a wafer assembly and an igniter; an air inlet is formed in the base; a fixed shaft rod penetrating through the base is arranged on a central shaft of the base; the extending end of the fixing shaft rod is fixed to the center of the wafer assembly. The wafer assembly is provided with four circles of through holes evenly distributed in the radial direction of the wafer assembly. A plurality of T-shaped tooth structures are arranged on the edge of the wafer assembly, and each T-shaped tooth structure is composed of a vertical section and a transverse expansion section; the igniter penetrates through the base and the wafer assembly and is arranged on the vertical section of the T-shaped tooth structure. The specific flame spraying barrel is adopted, so that the problems of uneven combustion and large temperature fluctuation of a traditional flame spraying barrel are effectively solved, harmful emissions generated by incomplete combustion are reduced, and environmental protection is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of winding plastic pipe production, and in particular to a flame spray gun with uniform combustion. Background Art

[0002] Plastic pipe winding technology is a processing method that uses a continuous thermoplastic plastic tape or film to soften it on a core mold and spirally wind or overlap it to form a plastic pipe with a certain thickness and specification.

[0003] In the current plastic pipe winding molding technology, the spray gun is used as a heating element, and the uniformity and stability of its flame are crucial to the molding quality of the pipe. Traditional spray guns often encounter problems such as uneven flame combustion and large temperature fluctuations during use. The uneven flame will cause uneven heating of the pipe, which is easy to form cold spots or overheating areas during the molding process, affecting the uniformity of the wall thickness of the pipe, thereby causing defects such as wrinkles, dents or uneven strength, and even causing the product to be scrapped in severe cases; in addition, temperature instability directly affects the melting state and curing process of plastic materials, which may lead to uneven stress distribution inside the material, affecting the physical properties of the final product, such as compressive strength, impact resistance and service life; at the same time, due to incomplete combustion, energy utilization is low, which increases production costs; and unstable flames are prone to premature aging and damage of spray guns and peripheral equipment, increasing the frequency and cost of repair and replacement of parts.

[0004] In view of the above problems, the industry urgently needs a new spray gun design that can effectively solve the problems of uneven flame combustion and temperature fluctuations, ensure the molding quality of wrapped plastic pipes, and improve production efficiency. Summary of the invention

[0005] In order to solve the problems of uneven flame combustion and large temperature fluctuations in existing spray guns, the present application provides a flame spray gun with uniform combustion.

[0006] The present application provides a flame spray gun for uniform combustion, which adopts the following technical solution: comprising a spray gun body, wherein the spray gun body comprises a base, a chamber, a disc assembly and an igniter;

[0007] The base is provided with an air inlet; the central axis of the base is provided with a fixed shaft rod penetrating the base; the extended end of the fixed shaft rod is fixed to the center of the wafer assembly;

[0008] The wafer assembly is provided with 4 circles of through holes evenly distributed along the radial direction of the wafer assembly, which are, from the center of the circle to the outside, a first circle of holes, a second circle of holes, a third circle of holes and a fourth circle of holes;

[0009] The edge of the wafer assembly is provided with a plurality of "T"-shaped tooth structures, each of which is composed of a vertical section and a transverse extension section;

[0010] The igniter passes through the base and the wafer assembly and is arranged on the vertical section of the "T"-shaped tooth structure.

[0011] By adopting the above-mentioned technical solution, the present application adopts a specific disc assembly, a unique "T"-shaped tooth structure and an igniter position arrangement, which effectively solves the problems of uneven combustion and large temperature fluctuations existing in traditional flame spray guns, and reduces harmful emissions produced by incomplete combustion, such as carbon monoxide and carbon black particles, by precisely controlling the combustion process, which is beneficial to environmental protection.

[0012] Among them, the four circles of holes on the disc assembly are evenly distributed along the radial direction. This design allows the gas entering the chamber (such as fuel gas and combustion-supporting gas) to be mixed in multiple layers and gradually, thereby forming a more uniform airflow distribution.

[0013] The "T"-shaped tooth structure set on the edge not only enhances the mechanical stability of the disc assembly, but also ensures that the ignition source is located at the optimal intersection of the airflow through the precise position of the igniter, which helps to quickly ignite and maintain a stable combustion state, reduces ignition delay and flameout risks, and improves the controllability of the flame.

[0014] The fixed shaft design ensures that the disc assembly is firmly positioned on the base, and maintains structural stability and airtightness even under high temperature and long-term operating conditions, which is essential for maintaining the uniformity and stability of the flame. At the same time, such a structural design facilitates maintenance and replacement of parts, thereby improving the reliability and service life of the overall equipment.

[0015] Optionally, the diameter of the first circle of holes is smaller than the diameter of the fourth circle of holes; and the diameters of the first circle of holes, the second circle of holes and the third circle of holes are the same.

[0016] Optionally, the number of holes in the first circle is 12; the number of holes in the second circle is 16; the number of holes in the third circle is 20; and the number of holes in the fourth circle is 24.

[0017] Optionally, the diameter of the first circle of holes is 1.5-3 mm.

[0018] Optionally, the diameter of the fourth circle of holes is 3-4 mm.

[0019] By adopting the above-mentioned technical solution, the present application adopts the design of the diameter and number of holes in different ring layers, which can optimize the diffusion rate and mixing ratio of the combustion gas, ensure that the flame burns more fully and evenly, reduce local overheating or low temperature areas, and improve combustion efficiency and stability.

[0020] Optionally, the number of the “T”-shaped tooth structures is 24.

[0021] Optionally, the length of the vertical section 61 of the “T”-shaped tooth structure is 2.5-3 times the length of the lateral extension section 62 .

[0022] By adopting the above-mentioned technical solution, the present application uses 24 "T"-shaped tooth structures evenly distributed around the edge of the disc assembly, which can ensure the balance of gas circulation in the circumferential direction; each tooth structure is equivalent to a tiny unit for guiding and stabilizing the airflow. They work together to not only help the gas enter the combustion area more smoothly, but also play an important role in controlling the flame morphology, such as reducing the generation of vortices, making the flame shape more regular, and further improving the stability and efficiency of combustion.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application adopts a specific disc assembly, a unique "T"-shaped tooth structure and an igniter position arrangement, which effectively solves the problems of uneven combustion and large temperature fluctuations existing in traditional flame spray guns, and reduces harmful emissions such as carbon monoxide and carbon black particles generated by incomplete combustion by precisely controlling the combustion process, which is beneficial to environmental protection;

[0025] 2. The four circles of holes on the disc assembly are evenly distributed along the radial direction. This design allows the gas (such as fuel gas and combustion-supporting gas) entering the chamber to be mixed in multiple layers and gradually, thus forming a more uniform airflow distribution;

[0026] 3. The "T"-shaped tooth structure set on the edge not only strengthens the mechanical stability of the disc assembly, but also ensures that the ignition source is located at the optimal intersection of the airflow through the precise position of the igniter, which helps to quickly ignite and maintain a stable combustion state, and reduces the risk of ignition delay and flameout, thereby improving the ignition success rate and flame controllability;

[0027] 4. The design of the fixed shaft ensures the firm positioning of the disc assembly on the base, and maintains the stability and airtightness of the structure even under high temperature and long-term operation, which is essential for maintaining the uniformity and stability of the flame; at the same time, such a structural design facilitates maintenance and replacement of parts, improving the reliability and service life of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front view of the flame spray tube of Example 1 of the present application;

[0029] Figure 2 This is a cross-sectional view of the flame spray tube of Example 1 of the present application;

[0030] Explanation of the accompanying drawings: 1. Spray gun body; 2. Base; 21. Air inlet; 22. Fixing rod; 23. Fixing nut; 3. Chamber; 4. Disc assembly; 5. Holes; 51. First circle of holes; 52. Second circle of holes; 53. Third circle of holes; 54. Fourth circle of holes; 6. "T"-shaped tooth structure; 61. Vertical section; 62. Lateral expansion section; 7. Ignitor; 71. Ignitor fixing plate. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0032] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0033] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] Example 1

[0035] Reference Figure 1-2 A flame spray gun with uniform, stable and sufficient combustion comprises a spray gun body 1, wherein the spray gun body 1 comprises a base 2, a chamber 3, a disc assembly 4 and an igniter 7;

[0036] The base 2 is provided with an air inlet 21; the central axis of the base 2 is provided with a fixed shaft 22 penetrating the base 2; the extended end of the fixed shaft 22 is fixed to the center of the wafer assembly 4;

[0037] The wafer assembly 4 is provided with 4 circles of through holes 5 evenly distributed along the radial direction of the wafer assembly, which are, from the center of the circle to the outside, a first circle of holes 51, a second circle of holes 52, a third circle of holes 53 and a fourth circle of holes 54;

[0038] A plurality of “T”-shaped tooth structures 6 are provided at the edge of the wafer assembly 4, each of which is composed of a vertical section 61 and a transverse extension section 62;

[0039] The igniter 7 passes through the base 2 and the wafer assembly 4 and is arranged on the vertical section of the "T"-shaped tooth structure;

[0040] The diameter of the first circle of holes 51 is smaller than the diameter of the fourth circle of holes 54; and the diameters of the first circle of holes 51, the second circle of holes 52, and the third circle of holes 53 are the same;

[0041] The number of holes 51 in the first circle is 12; the number of holes 52 in the second circle is 16; the number of holes 53 in the third circle is 20; and the number of holes 54 in the fourth circle is 24;

[0042] The diameter of the first circle of holes 51 is 1.5 mm; the diameter of the fourth circle of holes is 3 mm;

[0043] The number of "T" type tooth structures is 24;

[0044] The length of the vertical section 61 of the “T”-shaped tooth structure is 2.5 times the length of the lateral expansion section 62 .

[0045] The implementation principle of a flame spray gun with uniform combustion in Example 1 of the present application is as follows: a mixture of natural gas and air (the ratio of natural gas to air is set according to the actual combustion value required) is introduced from the air inlet, and the mixed gas enters the chamber to act as a buffer to prevent the mixed gas from directly passing through the disc assembly and causing airflow turbulence; then, the mixed gas passes through the through holes and the "T"-shaped tooth structure on the disc assembly fixed by the fixed shaft and the fixed nut. At this time, the holes are evenly distributed radially, and the diameter of the outermost circle of the holes is larger than the diameter of the inner circle holes, which is beneficial to the shape constraint of the airflow. At the same time, the multiple "T"-shaped tooth structures arranged on the edge of the disc assembly can ensure the balance of gas circulation in the circumferential direction; each tooth structure is equivalent to a tiny unit for guiding and stabilizing the airflow, and they work together to not only help the gas enter the combustion area more smoothly, but also effectively control the flame shape and reduce the generation of vortexes after ignition by the igniter fixed on the disc assembly through the igniter fixing plate, thereby further improving the stability and efficiency of combustion.

[0046] Example 2

[0047] Based on Example 1, except that the diameter of the first circle of holes 51 is 2 mm, the diameter of the fourth circle of holes is 3.5 mm, and the length of the vertical section 61 of the "T"-shaped tooth structure is 3 times the length of the lateral extension section 62, the rest of the structure is consistent with Example 1.

[0048] Example 3

[0049] Based on Example 1, except that the diameter of the first circle of holes 51 is 3 mm, the diameter of the fourth circle of holes is 4 mm, and the length of the vertical section 61 of the "T"-shaped tooth structure is 2.8 times the length of the lateral extension section 62, the rest of the structure is consistent with Example 1.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flame spray gun for uniform combustion, comprising a spray gun body (1), characterized in that: The spray gun body (1) comprises a base (2), a chamber (3), a disc assembly (4) and an igniter (7); The base (2) is provided with an air inlet (21); the central axis of the base (2) is provided with a fixed shaft (22) penetrating the base (2); the protruding end of the fixed shaft (22) is fixed to the center of the wafer assembly (4); The wafer assembly (4) is provided with four circles of through holes (5) evenly distributed along the radial direction of the wafer assembly, which are, from the center of the circle outward, a first circle of holes (51), a second circle of holes (52), a third circle of holes (53) and a fourth circle of holes (54); The edge of the wafer assembly (4) is provided with a plurality of "T"-shaped tooth structures (6), each of the "T"-shaped tooth structures being composed of a vertical section (61) and a transverse extension section (62); The igniter (7) passes through the base (2) and the disc assembly (4), and is arranged on the vertical section (61) of the "T"-shaped tooth structure.

2. A flame spray gun for uniform combustion according to claim 1, characterized in that: The diameter of the first circle of holes (51) is smaller than the diameter of the fourth circle of holes (54); and the diameters of the first circle of holes (51), the second circle of holes (52) and the third circle of holes (53) are the same.

3. A flame spray gun for uniform combustion according to claim 2, characterized in that: The number of holes in the first circle (51) is 12; the number of holes in the second circle (52) is 16; the number of holes in the third circle (53) is 20; and the number of holes in the fourth circle (54) is 24.

4. A flame spray gun for uniform combustion according to claim 2, characterized in that: The diameter of the first circle of holes (51) is 1.5-3 mm.

5. A flame spray gun for uniform combustion according to claim 2, characterized in that: The fourth circle of holes (54) has a diameter of 3-4 mm.

6. A flame spray gun for uniform combustion according to claim 1, characterized in that: The number of the "T"-shaped tooth structures (6) is 24.

7. A flame spray gun for uniform combustion according to claim 6, characterized in that: The length of the vertical section (61) of the "T"-shaped tooth structure (6) is 2.5-3 times the length of the lateral expansion section (62).

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