Flue gas collecting system of thermal spraying device

Abstract

The utility model provides a flue gas collection system of a thermal spraying device, and solves the problems that the flue gas collection system of the existing thermal spraying device is only provided with a flue gas collection device near a spray head, the flue gas collection effect on heavy metal flue gas generated at the contact part of metal particles and a substrate is poor, the environment is polluted, and the service life of the flue gas collection device is prolonged. And the health injury to maintenance and operation personnel is also caused. The multiple first air suction pipes are arranged on the spray pipe, the front ends of the first air suction pipes are located in front of the spray head, heavy metal flue gas generated at the contact position of metal particles and a base body during thermal spraying can be absorbed, the absorption effect on the heavy metal flue gas is improved, and the heavy metal flue gas is prevented from polluting the environment; and the health injury to maintenance and operation personnel is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal spraying devices, in particular to a fume collection system for thermal spraying devices. Background Art

[0002] Thermal spraying technology is a new technology for strengthening and protecting the surface of materials. It is one of the most effective technologies for surface modification in the field of surface engineering. Thermal spraying refers to a method in which the spraying material is heated to a plastic or softened state inside or outside the spray gun, and then sprayed onto the surface of a pre-treated substrate, essentially maintaining an unmelted state to form a coating. By using different heat sources and spraying equipment, a series of coatings with various functions such as corrosion resistance, wear resistance, friction reduction, high temperature resistance, oxidation resistance, heat insulation, insulation, conductivity and microwave radiation protection can be prepared. Among thermal spraying technologies, metal thermal spraying technology is the most common. When the metal wire is melted at high temperature and sprayed out, it will react chemically with the air or coating components to produce a large amount of heavy metal smoke, which will not only pollute the environment, but also cause health damage to maintenance and operation personnel.

[0003] The applicant has discovered that there are at least the following technical problems in the prior art: heavy metal fume is not only generated near the nozzle, but also oxidized when the molten metal particles are sprayed onto the surface of the substrate to produce heavy metal fume. The existing fume collection system of the thermal spraying device only has a fume collection device near the nozzle, and the absorption effect of the heavy metal fume generated at the contact point between the metal particles and the substrate is poor, which not only pollutes the environment, but also causes health damage to maintenance and operation personnel. Utility Model Content

[0004] In order to solve the problem in the background technology that the existing fume collection system of the thermal spraying device is only equipped with a fume collection device near the nozzle, which has a poor extraction effect on the heavy metal fume generated at the contact point between the metal particles and the substrate, not only polluting the environment but also causing health damage to maintenance and operation personnel, the utility model proposes a fume collection system for the thermal spraying device.

[0005] The technical solution of the utility model is: a fume collection system for a thermal spraying device, comprising a nozzle and a plurality of suction pipes, the plurality of suction pipes being arranged at intervals along the circumferential direction of the nozzle, a nozzle being fixedly provided at the front end of the nozzle, the front end of the suction pipe being located in front of the nozzle to absorb heavy metal fume generated at the contact portion between metal particles and a substrate during thermal spraying, and an air intake hood being fixedly provided at the front end of the suction pipe;

[0006] An adjusting mechanism is provided on the nozzle, and the rear end of the first suction pipe is arranged on the adjusting mechanism. The adjusting mechanism is used to adjust the distance between the front end of the first suction pipe and the nozzle.

[0007] Preferably, the adjustment mechanism includes a sliding sleeve slidably mounted on the nozzle, a ring plate fixedly mounted on the sliding sleeve, a plurality of fixing seats 1 fixedly mounted on the ring plate and spaced apart along its circumference, and rear ends of the plurality of suction pipes 1 are respectively fixedly mounted on the plurality of fixing seats 1;

[0008] The sliding sleeve is provided with a threaded hole which is transparent from top to bottom. A stud is threaded through the threaded hole. The bottom end of the stud can pass through the threaded hole and tighten the sliding sleeve to the nozzle. The top end of the stud passes through the threaded hole and is fixed with a turning handle.

[0009] Preferably, the rear end fixing sleeve of the nozzle is provided with a fixing ring, and the bottom of the fixing ring is provided with a handle;

[0010] A plurality of fixing seats 2 are fixedly provided on the outer peripheral surface of the fixing ring and are spaced apart along its circumference. The plurality of fixing seats 2 correspond to the plurality of fixing seats 1 front and back. A plurality of spiral hoses are provided between the fixing seats 2 and the fixing seats 1. The rear end of the suction pipe 1 passes through the fixing seat 1 and is fixedly connected and communicated with the spiral hose. The rear end of the spiral hose passes through the fixing seat 2 and is provided with an suction fan.

[0011] Preferably, the nozzle is provided with a plurality of suction pipes 2 spaced apart along the circumferential direction thereof, the plurality of suction pipes 1 and the plurality of suction pipes 2 are staggered along the circumferential direction of the nozzle, and the nozzle is located inside the front end of the plurality of suction pipes 2;

[0012] A plurality of fixing seats 3 are arranged at intervals along the circumference of the fixing ring. The rear end of the suction pipe 2 is fixed through the ring plate and the fixing seat 3 in sequence and is fixedly connected to and communicated with the suction fan.

[0013] Preferably, the front end of the nozzle is provided with a protective cover, the nozzle is located in the protective cover, the rear end of the protective cover is a conical cylindrical structure with a gradually increasing cross-section from back to front, and the rear end of the protective cover is sleeved on the front end of the nozzle, the front end of the protective cover is a cylindrical structure, and the front end of the intake pipe 2 penetrates into the front end of the protective cover and is fixed with an air intake cover 2.

[0014] Preferably, a plurality of guide cylinders spaced apart along the circumferential direction are fixedly provided on the outer peripheral surface of the protective cover, and the air intake pipe is slidably inserted into the guide cylinders.

[0015] Advantages of the present invention: The present invention arranges multiple suction pipes on the nozzle so that the front end of the suction pipe is located in front of the nozzle, which can absorb the heavy metal fume generated at the contact point between the metal particles and the substrate during thermal spraying, thereby improving the absorption effect of the heavy metal fume, avoiding heavy metal fume polluting the environment and causing health damage to maintenance and operation personnel; by arranging an adjustment mechanism on the nozzle, the distance between the front end of the suction pipe and the nozzle is adjusted, so that the front end of the suction pipe can be located near the contact point between the metal particles and the substrate during thermal spraying, thereby improving the absorption efficiency of the fume, avoiding the escape of part of the fume due to excessive spacing and the inability to be effectively absorbed, thereby affecting the effect of fume collection and treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only 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.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 A side cross-sectional diagram of the middle adjustment mechanism;

[0019] Figure 3 For this utility model Figure 1 Schematic side view of the middle protective cover.

[0020] In the figure: 1. Nozzle; 2. Intake pipe 1; 3. Nozzle; 4. Intake hood 1; 5. Adjustment mechanism; 51. Sliding sleeve; 52. Ring plate; 53. Fixing seat 1; 54. Stud; 55. Turning handle; 6. Fixing ring; 7. Grip; 8. Fixing seat 2; 9. Spiral hose; 10. Intake pipe 2; 11. Fixing seat 3; 12. Protective cover; 13. Intake hood 2; 14. Guide tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: A fume collection system for a thermal spraying device, such as Figure 1-3As shown, it includes a nozzle 1 and multiple intake pipes 2. The intake pipe 2 is a metal hard pipe. The multiple intake pipes 2 are spaced apart along the circumferential direction of the nozzle 1. A nozzle 3 is fixedly provided at the front end of the nozzle 1. For technicians in the relevant field, the nozzle 1 and the nozzle 3 belong to well-known technologies, so they are not described in detail. The front end of the intake pipe 2 is located in front of the nozzle 3 to absorb the heavy metal fume generated at the contact point between the metal particles and the substrate during thermal spraying, so as to avoid the heavy metal fume polluting the environment and causing health damage to maintenance and operation personnel; the front end of the intake pipe 2 is fixedly provided with an air intake hood 4, which can prevent tiny metal particles and splashes generated when the metal particles contact the substrate during thermal spraying from entering the intake pipe 2, so as to avoid clogging of the intake pipe 2.

[0023] The nozzle 1 is provided with an adjusting mechanism 5, and the rear end of the suction pipe 2 is provided on the adjusting mechanism 5. The adjusting mechanism 5 is used to adjust the distance between the front end of the suction pipe 2 and the nozzle 3, so that the front end of the suction pipe 2 can be located near the contact part between the metal particles and the substrate during thermal spraying, thereby improving the absorption efficiency of the flue gas and avoiding the large distance causing part of the flue gas to escape and be unable to be effectively absorbed, thereby affecting the effect of the flue gas collection and treatment, thereby avoiding heavy metal flue gas from polluting the environment and causing health damage to maintenance and operation personnel; specifically, the adjusting mechanism 5 includes a sliding sleeve provided on the nozzle 1 The sleeve 51 is fixed with a ring plate 52 on the sliding sleeve 51, and a plurality of fixing seats 53 arranged at intervals along its circumference are fixed on the ring plate 52. The rear ends of the plurality of suction pipes 2 are fixedly penetrated on the plurality of fixing seats 53 respectively; a threaded hole that is transparent from top to bottom is opened on the sliding sleeve 51, and a stud 54 is threadedly penetrated in the threaded hole. The bottom end of the stud 54 can pass through the threaded hole and tighten the sliding sleeve 51 to the nozzle 1. The top end of the stud 54 passes through the threaded hole and is fixed with a rotating handle 55. The rotating handle 55 is a plum blossom rotating handle, which is convenient for twisting to drive the stud 54 to rotate.

[0024] When adjusting the distance between the front end of the suction pipe 2 and the nozzle 3, the handle 55 is rotated to drive the stud 54 to rotate and separate from the nozzle 1, and then the handle 55 is held to drag the sliding sleeve 51 and the suction pipe 2 to slide back and forth to achieve the purpose of changing the distance between the front end of the suction pipe 2 and the nozzle 3, thereby achieving the purpose of moving the suction pipe 2 to the vicinity of the base part, and then the handle 55 is rotated in the opposite direction to drive the stud 54 to press against the nozzle 1, thereby re-fixing the sliding sleeve 51 on the nozzle 1.

[0025] The rear end fixing sleeve of the nozzle 1 is provided with a fixing ring 6, and the bottom of the fixing ring 6 is provided with a handle 7; a plurality of fixing seats 2 8 arranged at intervals along its circumference are fixedly provided on the outer peripheral surface of the fixing ring 6, and the plurality of fixing seats 2 8 correspond to the plurality of fixing seats 1 53 front and back, and a plurality of spiral hoses 9 are provided between the fixing seat 2 8 and the fixing seat 1 53. The rear end of the intake pipe 2 passes through the fixing seat 1 53 and is fixedly connected and communicated with the spiral hose 9. The spiral hose 9 can adapt to the position change of the intake pipe 2 during the movement and adjustment process through its own deformation, thereby avoiding the risk of leakage caused by the displacement of the intake pipe 2; the rear end of the spiral hose 9 passes through the fixing seat 2 8 and is provided with an intake fan, which is used to absorb the flue gas near the contact point between the metal particles and the substrate during thermal spraying through the spiral hose 9 and the intake pipe 2. For technical personnel in the relevant field, the intake fan is a well-known technology, so it will not be described in detail.

[0026] The nozzle 1 is provided with a plurality of suction pipes 10 arranged at intervals along its circumferential direction. The plurality of suction pipes 2 and the plurality of suction pipes 10 are staggered along the circumferential direction of the nozzle 1. The nozzle 3 is located inside the front end of the plurality of suction pipes 10. The front end of the suction pipe 10 can absorb the heavy metal fume generated when the nozzle 3 sprays out molten metal particles; the outer peripheral surface of the fixed ring 6 is provided with a plurality of fixing seats 11 arranged at intervals along its circumferential direction. The rear end of the suction pipe 10 is fixed through the ring plate 52 and the fixing seat 11 in sequence and is fixedly connected and communicated with the suction fan. The ring plate 52 and the fixing seat 11 can fix and support the suction pipe 10. The suction fan is used to absorb the heavy metal fume generated when the nozzle 3 sprays out molten metal particles through the suction pipe 10.

[0027] The front end of the nozzle 1 is provided with a protective cover 12, and the nozzle 3 is located inside the protective cover 12. The rear end of the protective cover 12 is a conical cylindrical structure with a gradually increasing cross-section from the back to the front, and the rear end of the protective cover 12 is sleeved on the front end of the nozzle 1 to seal the rear end of the protective cover 12, so that the protective cover 12 has a front opening structure. The front end of the protective cover 12 is a cylindrical structure, and the front end of the suction pipe 10 penetrates into the front end of the protective cover 12 and is fixed with an air intake cover 13; by arranging the protective cover 12 at the front end of the nozzle 1 and covering the nozzle 3 inside the protective cover 12, not only can the molten metal particles sprayed by the nozzle 3 be prevented from escaping everywhere, but also the heavy metal fume generated when the molten metal particles are sprayed can be prevented from escaping everywhere, which makes it difficult to collect the heavy metal fume. By arranging the suction pipe 10 and the air intake cover 13 at the opening of the protective cover 12 of the front opening mechanism, the heavy metal fume in the protective cover 12 can be collected.

[0028] A plurality of guide cylinders 14 are fixedly provided on the outer peripheral surface of the protective cover 12 and are spaced apart along its circumferential direction. The intake pipe 2 slides through the guide cylinders 14. The guide cylinders 14 can guide the intake pipe 2 to move in the front and rear directions while supporting the front end of the intake pipe 2.

[0029] Working principle: When thermal spraying an object, the molten metal liquid enters the nozzle 3 through the nozzle 1 and is sprayed out in the form of metal particles. The molten metal particles sprayed from the nozzle 3 come into contact with the air to produce heavy metal fume. The suction fan absorbs and collects the heavy metal fume near the nozzle 3 through the suction pipe 2 10. When the molten metal particles come into contact with the surface of the substrate, heavy metal fume is produced. The suction fan absorbs and collects the fume near the substrate through the spiral hose 9 and the suction pipe 2; when the distance between the suction pipe 2 and the substrate is far away, the handle 55 is rotated to drive the stud 54 to rotate and separate from the nozzle 1, and then the handle 55 is held to drag the sliding sleeve 51 and the suction pipe 2 to slide back and forth to change the distance between the front end of the suction pipe 2 and the nozzle 3, and then the suction pipe 2 is moved to the vicinity of the substrate; then the handle 55 is rotated in the opposite direction to drive the stud 54 to press against the nozzle 1, and then the sliding sleeve 51 is re-fixed on the nozzle 1.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is determined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fume collection system for a thermal spraying device, characterized in that: The invention comprises a nozzle (1) and a plurality of suction pipes (2), wherein the plurality of suction pipes (2) are arranged at intervals along the circumferential direction of the nozzle (1), a nozzle (3) is fixedly provided at the front end of the nozzle (1), and the front end of the suction pipe (2) is located in front of the nozzle (3) to absorb heavy metal fumes generated at the contact portion between metal particles and the substrate during thermal spraying, and an air intake hood (4) is fixedly provided at the front end of the suction pipe (2); The nozzle (1) is provided with an adjusting mechanism (5), the rear end of the suction pipe (2) is provided on the adjusting mechanism (5), and the adjusting mechanism (5) is used to adjust the distance between the front end of the suction pipe (2) and the nozzle (3).

2. The fume collection system of a thermal spraying device according to claim 1, characterized in that: The regulating mechanism (5) comprises a sliding sleeve (51) slidably mounted on the nozzle (1), a ring plate (52) fixedly mounted on the sliding sleeve (51), a plurality of fixed seats (53) spaced along the circumference of the ring plate (52), and rear ends of the plurality of suction pipes (2) are fixedly mounted on the plurality of fixed seats (53). The sliding sleeve (51) is provided with a threaded hole that is transparent from top to bottom, and a stud (54) is threaded through the threaded hole. The bottom end of the stud (54) can pass through the threaded hole and tighten the sliding sleeve (51) to the nozzle (1). The top end of the stud (54) passes through the threaded hole and is fixed with a rotating handle (55).

3. The fume collection system of a thermal spraying device according to claim 2, characterized in that: The rear end fixing sleeve of the nozzle (1) is provided with a fixing ring (6), and the bottom of the fixing ring (6) is provided with a handle (7); A plurality of fixing seats (8) are fixedly provided on the outer peripheral surface of the fixing ring (6) and are spaced apart along the circumference thereof. The plurality of fixing seats (8) correspond to the plurality of fixing seats (53) in front and back. A plurality of spiral hoses (9) are provided between the fixing seats (8) and the fixing seats (53). The rear end of the suction pipe (2) passes through the fixing seat (53) and is fixedly connected and communicated with the spiral hose (9). The rear end of the spiral hose (9) passes through the fixing seat (8) and is provided with a suction fan.

4. The fume collection system for a thermal spraying device according to claim 3, characterized in that: The nozzle (1) is provided with a plurality of air suction pipes (10) spaced apart along its circumferential direction, the plurality of air suction pipes (2) and the plurality of air suction pipes (10) are staggered along the circumferential direction of the nozzle (1), and the nozzle (3) is located inside the front end of the plurality of air suction pipes (10); A plurality of fixing seats three (11) are provided on the outer peripheral surface of the fixing ring (6) and are spaced apart along the circumference thereof. The rear end of the suction pipe two (10) is fixedly passed through the ring plate (52) and the fixing seat three (11) in sequence and is fixedly connected and communicated with the suction fan.

5. The fume collection system for a thermal spraying device according to claim 4, characterized in that: The front end of the nozzle (1) is provided with a protective cover (12), the nozzle (3) is located in the protective cover (12), the rear end of the protective cover (12) is a tapered cylindrical structure with a cross-section gradually increasing from the rear to the front, and the rear end of the protective cover (12) is sleeved on the front end of the nozzle (1), the front end of the protective cover (12) is a cylindrical structure, the front end of the second intake pipe (10) penetrates the front end of the protective cover (12) and is fixed with the second intake cover (13).

6. The fume collection system for a thermal spraying device according to claim 5, characterized in that: A plurality of guide cylinders (14) are fixedly provided on the outer peripheral surface of the protective cover (12) and are arranged at intervals along the circumferential direction thereof, and the suction pipe (2) is slidably inserted into the guide cylinder (14).

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