Spray gun for remelting spraying

Abstract

The utility model relates to the technical field of spray guns, and discloses a spray gun for remelting spraying, the right end of a spray gun inner pipe is fixedly provided with an alloy sleeve head, the left side of the outer side of the spray gun inner pipe is fixedly provided with a first flange plate, and the outer side of the spray gun inner pipe is fixedly provided with a material inlet pipe located on the left side of the first flange plate; the left end of the first flange plate is in threaded connection with an inner cooling air pipe, and a connecting nozzle is fixedly installed at the bottom of the inner cooling air pipe. The spray gun inner pipe is in threaded connection with the inner cooling air pipe, the inner cooling air pipe is connected with the compressed air inlet pipe through a nut, and the spray gun inner pipe is connected with the outer sleeve through a flange plate and a bolt, so that the whole spray gun is fast to disassemble and assemble, the sealing performance of the whole spray gun can be improved, and air leakage is reduced. Air enters the spray gun inner pipe through the compression air inlet pipe, high-speed airflow drives materials in the material inlet pipe to flow at a high speed, and material blockage is reduced through flowing of the high-speed airflow.

Description

Technical Field

[0001] This utility model relates to the field of spray gun technology, specifically a spray gun for remelting spray. Background Technology

[0002] The working principle of a remelting lance is based on fluid mechanics and combustion principles. When high-pressure gas or liquid passes through the lance, it is accelerated and forms a high-speed jet. These jets carry the medium into the furnace or molten pool, producing a strong stirring and mixing effect. In some cases, the lance is also equipped with an ignition device to ignite the injected fuel to generate heat.

[0003] Conventional remelting spray guns suffer from defects such as poor sealing and air leakage, resulting in low airflow velocity. Consequently, the airflow cannot drive the material flow, causing blockage. In addition, the cumbersome disassembly and reassembly of the parts leads to low assembly efficiency during use. Therefore, a remelting spray gun is proposed to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a spray gun for remelting, which has the advantages of tight connection, convenient assembly and is not easily clogged, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned goals of tight connection, convenient assembly, and resistance to clogging, this utility model provides the following technical solution: a spray gun for reflow injection, comprising an inner tube, an alloy sleeve fixedly installed at the right end of the inner tube, a flange fixedly installed on the left side of the outer side of the inner tube, a material inlet pipe fixedly installed on the inner tube and to the left of the flange, an inner cooling duct threadedly connected to the left end of the flange, a connecting nozzle fixedly installed at the bottom of the inner cooling duct, a nut threadedly connected to the left end of the inner cooling duct, a compressed air inlet pipe embedded inside the nut, an outer sleeve fitted on the outer side of the inner tube, an outer cooling duct fixedly installed on the outer side of the outer sleeve, and a flange two fixedly installed on the left side of the outer sleeve.

[0008] Preferably, the connecting nozzle is perpendicular to the inner cooling air duct, the outer cooling air duct is perpendicular to the outer sleeve, and the material inlet pipe is inclined to the inner tube of the spray gun.

[0009] Preferably, one end of the compression intake pipe extends below the material inlet pipe, and the other end extends to the outside of the nut.

[0010] Preferably, a gap of 10-20 mm is provided between the outer tube and the inner tube of the spray gun.

[0011] Preferably, one end of the alloy sleeve extends through and to the outside of the outer sleeve.

[0012] Preferably, the flange one and flange two are detachably connected by bolts and nuts.

[0013] Preferably, the inner and outer tubes of the spray gun are made of 301S stainless steel.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a spray gun for remelting, which has the following advantages:

[0016] 1. This reflow spray gun features a threaded connection between its inner tube and inner cooling air duct. The inner cooling air duct is connected to the compressed air inlet pipe via a nut. The inner tube and outer tube are connected via a flange and bolts. This design ensures quick disassembly and assembly of the entire spray gun and improves its sealing performance, reducing air leakage. Air enters the inner tube of the spray gun through the compressed air inlet pipe. The high-speed airflow carries the material into the tube, causing it to flow at high speed. This high-speed airflow reduces material blockage.

[0017] 2. The spray gun for reflowing the furnace is connected to external cooling air through a connecting nozzle. The cooling air is blown towards the outer wall of the compressor intake pipe and the inner wall of the spray gun inner tube to achieve internal cooling of the spray gun inner tube; it is also connected to external cooling air through an external cooling air pipe. The cooling air is blown towards the outer wall of the spray gun inner tube and the inner wall of the outer sleeve to achieve external cooling of the spray gun inner tube.

[0018] 3. The spray gun for remelting is made of 301S stainless steel for both the inner and outer tubes. The end of the inner tube is connected to a high-temperature and corrosion-resistant alloy sleeve, which improves the overall performance of the spray gun and meets the requirements for its application in high-temperature and corrosion-resistant environments. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional exploded view of the present invention.

[0021] In the diagram: 1. Inner tube of spray gun; 2. Alloy sleeve; 3. Flange 1; 4. Material inlet pipe; 5. Inner cooling air duct; 6. Connecting nozzle; 7. Nut; 8. Compressed air inlet pipe; 9. Outer pipe; 10. Outer cooling air duct; 11. Flange 2. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-2 A reflow spray gun includes an inner tube 1, an alloy sleeve 2 fixedly installed at the right end of the inner tube 1, a flange 3 fixedly installed on the left side of the outer side of the inner tube 1, and a material inlet pipe 4 fixedly installed on the inner tube 1 and located on the left side of the flange 3. The material inlet pipe 4 is inclined to the inner tube 1.

[0024] Please see Figure 1-2 The left end of flange 3 is threadedly connected to an internal cooling air duct 5. A connecting nozzle 6 is fixedly installed at the bottom of the internal cooling air duct 5. The connecting nozzle 6 is perpendicular to the internal cooling air duct 5. The left end of the internal cooling air duct 5 is threadedly connected to a nut 7. A compression air inlet pipe 8 is embedded inside the nut 7. One end of the compression air inlet pipe 8 extends to the bottom of the material inlet pipe 4, and the other end extends to the outside of the nut 7.

[0025] Please see Figure 1-2 The inner tube 1 of the spray gun is fitted with an outer tube 9, and a gap of 10-20 mm is provided between the outer tube 9 and the inner tube 1. One end of the alloy sleeve 2 passes through and extends to the outside of the outer tube 9. The inner tube 1 and the outer tube 9 of the spray gun are made of 301S stainless steel.

[0026] Please see Figure 1-2 An external cooling duct 10 is fixedly installed on the outside of the outer sleeve 9. The external cooling duct 10 is perpendicular to the outer sleeve 9. A flange 2 11 is fixedly installed on the left side of the outer sleeve 9. The flange 1 3 and the flange 2 11 are detachably connected by bolts and nuts.

[0027] Working principle: When in use, external cooling air is connected through the connecting nozzle 6. The cooling air is blown towards the outer wall of the compressor intake pipe 8 and the inner wall of the spray gun inner tube 1 to achieve internal cooling of the spray gun inner tube 1; external cooling air is connected through the external cooling air pipe 10. The cooling air is blown towards the outer wall of the spray gun inner tube 1 and the inner wall of the outer sleeve 9 to achieve external cooling of the spray gun inner tube 1.

[0028] The spray gun inner tube 1 is threadedly connected to the inner cooling air duct 5, and the inner cooling air duct 5 is connected to the compressed air inlet pipe 8 via a nut 7. The spray gun inner tube 1 is connected to the outer sleeve pipe 9 via a flange and bolts, thus ensuring quick disassembly and assembly of the entire spray gun and improving the overall sealing performance of the spray gun, reducing air leakage. Air enters the spray gun inner tube 1 through the compressed air inlet pipe 8, and the high-speed airflow carries the material into the pipe 4, where the material flows at high speed. The high-speed airflow reduces material blockage.

[0029] The inner tube 1 and outer tube 9 of the spray gun are made of 301S stainless steel. The end of the inner tube 1 of the spray gun is connected to a high temperature and corrosion resistant alloy sleeve 2, which improves the overall performance of the spray gun and meets the requirements of the spray gun for use in high temperature and corrosion resistant scenarios.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lance for injection into a reverb tank, comprising a lance inner tube (1), characterized in that: The right end of the lance inner tube (1) is fixedly provided with an alloy sleeve head (2), the left side of the outer side of the lance inner tube (1) is fixedly provided with a flange plate I (3), the left side of the lance inner tube (1) and located on the left side of the flange plate I (3) is fixedly provided with a material inlet pipe (4), the left end of the flange plate I (3) is threadedly connected with an inner cooling air pipe (5), the bottom of the inner cooling air pipe (5) is fixedly provided with a connecting nozzle (6), the left end of the inner cooling air pipe (5) is threadedly connected with a screw cap (7), the inside of the screw cap (7) is embedded with a compressed air inlet pipe (8), the outer side of the lance inner tube (1) is sleeved with an outer sleeve pipe (9), the outer side of the outer sleeve pipe (9) is fixedly provided with an outer cooling air pipe (10), the left side of the outer sleeve pipe (9) is fixedly provided with a flange plate II (11).

2. A reclamation injection lance according to claim 1, characterized in that: The connecting nozzle (6) is vertically arranged with the inner cooling air pipe (5), the outer cooling air pipe (10) is vertically arranged with the outer sleeve pipe (9), and the material inlet pipe (4) is obliquely arranged with the lance inner tube (1).

3. A reclamation injection lance according to claim 1, characterized in that: One end of the compressed air inlet pipe (8) extends below the material inlet pipe (4), and the other end extends outside the screw cap (7).

4. A reclamation injection lance according to claim 1, characterized in that: A gap is arranged between the outer sleeve pipe (9) and the lance inner tube (1), and the gap size is 10-20mm.

5. A reclamation injection lance according to claim 1, characterized in that: One end of the alloy sleeve head (2) extends outside the outer sleeve pipe (9).

6. A reclamation injection lance according to claim 1, characterized in that: The flange plate I (3) and the flange plate II (11) are detachably connected through bolts and nuts.

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