Anti-abrasion spraying device for boiler tube screen
By designing a boiler tube screen anti-wear spraying device, and utilizing plasma nozzles and a rotating clamp system, the problem of dead corners in boiler tube screen spraying was solved, achieving uniform spraying and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, it is difficult to achieve uniform spraying at the ends, corners, and irregularly shaped areas of boiler tube panels, resulting in spraying dead corners that affect safe and stable operation and service life.
A wear-resistant spraying device for boiler tube screens was designed. It utilizes a plasma nozzle and a rotating clamping system to achieve uniform coating by rotating and clamping the tube inside a cylinder and retrieving the scraper, thus avoiding dead corners.
It achieves uniform spraying on the surface of the tube screen, reduces paint waste, improves safety, and enhances equipment stability and service life.
Smart Images
Figure CN224047486U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a boiler spraying technical field, and the specific field is a boiler tube panel anti-abrasion spraying device. BACKGROUND
[0002] In the electric power, chemical industry and other industries, the boiler is an important equipment. The boiler tube panel is subjected to abrasion problems caused by various factors in the long-term operation process, which seriously affects the safe and stable operation and service life of the boiler. When the boiler is running, the surface of the tube panel will be subjected to the scouring of high-temperature and high-speed dust-containing airflow, and the solid particles in the airflow will continuously impact the surface of the tube panel, causing the gradual abrasion of the metal material. For example, in a coal-fired boiler, the high-temperature flue gas generated by combustion carries a large amount of fly ash particles, which flow through the tube panel at a high speed, causing scouring and abrasion to the tube panel. Therefore, it is necessary to spray the tube panel.
[0003] The prior art uses the high-temperature plasma jet generated by the plasma generator to heat and melt the spraying material and spray it at a high speed onto the surface of the tube panel. The spraying gun is moved by a mechanical arm or a track system to achieve relatively uniform spraying. However, the mechanical arm or the track system may not be able to accurately reach some special parts of the tube panel, such as the end of the tube panel, the corners, and some irregularly shaped areas, thereby forming a spraying dead angle. SUMMARY
[0004] The utility model discloses in order to solve the end of the tube panel, the corner and some irregularly shaped area, the mechanical arm or the track system may not be able to accurately reach, thereby forming the technical problem of spraying dead angle, and then provides a boiler tube panel anti-abrasion spraying device.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a boiler tube panel anti-abrasion spraying device, comprising: a cylinder, the cylinder is horizontally arranged and connected to the base, a material pipe is connected in the upper part hole of the cylinder, a plasma spray head is connected to the lower end of the material pipe, a material box is connected to the upper end of the material pipe, the material pipe is connected with the air pipe through a valve, the air pipe is communicated with the gas outlet end of the air pump, the base is connected with a bearing frame at both ends, the bearing frame is rotatably connected with a corresponding rotating shaft, the rotating shaft is concentrically arranged with the cylinder, a rotating drum is slidably connected to the rotating shaft, a clamp is connected to the inner end of the rotating drum, and the clamps on both sides can clamp the tube panel inside the cylinder.
[0006] Preferably, the cylinder is composed of two upper and lower half-circular arc plates which are hinged together, and the air pipe is communicated with the gas outlet end of the air pump through a hose.
[0007] Preferably, the clamp comprises a clamping plate one connected to the inner end of the rotating drum, a threaded hole is formed in the clamping plate one, a stud is threadedly connected to the threaded hole, the lower end of the stud is rotatably connected to a clamping plate two, and the tube panel is located between the clamping plate one and the clamping plate two.
[0008] Preferably, the clamp plate one and the clamp plate two can clamp the scraper at both ends, the rotation path of the two side edges of the scraper is coincided with the inner surface of the cylinder when the scraper is clamped, and the upper and lower half-circular arc plates of the cylinder are locked through the locking mechanism.
[0009] Compared with the prior art, the utility model has the advantages of:
[0010] The pipe screen is clamped in the cylinder and continuously rotates, the upper plasma torch sprays the paint onto the rotating pipe screen, there is no dead angle of spraying, the rotating pipe screen better contacts the paint floating in the cylinder, avoids the dispersion of the paint in the air, and causes waste and harms the body safety of the operator;
[0011] Part of the paint is sprayed to the inner wall of the cylinder, the scraper is installed in the clamp when the paint accumulates to a certain degree, the clamp drives the scraper to scrape the paint on the inner wall of the cylinder, and the paint is recycled. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 The utility model discloses a structure diagram Figure 1 ;
[0013] Figure 2 The utility model discloses a structure diagram Figure 2 ;
[0014] Figure 3 It is the pipe screen 10 clamping structure schematic drawing of the utility model;
[0015] Figure 4 It is the scraper 13 clamping structure schematic drawing of the utility model.
[0016] In the drawing: cylinder 1;Base 2;Material pipe 3;Material box 4;Air pipe 5;Bearing frame 6;Shaft 7;Rotary drum 8;Clamp 9;Clamp plate one 91;Stud 92;Clamp plate two 93;Pipe screen 10;Hose 11;Locking mechanism 12;Scraper 13. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings of the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.
[0018] The rotary connection in the device refers to the axial fixation of the bearing by clamping the bearing on the shaft, and the spring retainer is clamped in the retainer groove on the shaft or shaft hole to realize rotation. The hinged connection refers to the movable connection mode on the connecting parts such as hinges, pins and short shafts.
[0019] The present invention will now be described in detail with reference to the accompanying drawings.
[0020] The following is in conjunction with the appendix Figures 1-4 This embodiment describes a boiler tube screen anti-wear spraying device, comprising: a cylinder 1, which is horizontally connected to a base 2; a material pipe 3 is connected to the upper hole of the cylinder 1; a plasma nozzle is connected to the lower end of the material pipe 3; a material box 4 is connected to the upper end of the material pipe 3; the material pipe 3 is connected to an air duct 5 through a valve; the air duct 5 is connected to the air outlet of an air pump; bearing brackets 6 are connected to both ends of the base 2; a corresponding rotating shaft 7 is rotatably connected inside the bearing bracket 6; the rotating shaft 7 is concentrically arranged with the cylinder 1; a rotating cylinder 8 is slidably connected to the rotating shaft 7; a clamp 9 is connected to the inner end of the rotating cylinder 8; and the clamps 9 on both sides can clamp the tube screen 10 inside the cylinder 1.
[0021] The tube screen 10 is placed inside the cylinder 1 and clamped at both ends in the clamps 9 on both sides. The length of the rotating cylinder 8 sliding out on the rotating shaft 7 is adjusted according to the length of the tube screen 10. The rotating shaft 7 on one side is driven to rotate by external power. The rotating shaft 7 drives the tube screen 10 to rotate synchronously with the rotating shaft 7 on the other side. The valves of the upper corresponding material pipe 3 and air pipe 5 are opened according to the position of the tube screen 10 to power the plasma nozzle. The paint in the material box 4 enters the plasma nozzle through the material pipe 3 and is melted at high temperature. The air pump output enters the corresponding material pipe 3 through the air pipe 5 and sprays the melted paint downwards to coat the rotating tube screen 10. There are no dead corners in the spraying. The rotating tube screen 10 has better contact with the paint floating in the cylinder, avoiding the paint from spreading in the air, causing waste and endangering the operator's health.
[0022] The cylinder 1 is composed of two semi-circular plates that are hinged together. The air duct 5 is connected to the air pump outlet through the flexible hose 11.
[0023] When the tube screen 10 is clamped, the upper semi-circular plate is rotated around the hinge axis to open, at which point the tube screen 10 can be conveniently placed between the two clamps 9.
[0024] The clamp 9 includes a clamping plate 91, which is connected to the inner end of the rotating drum 8. A stud 92 is threadedly connected to the clamping plate 91, and the lower end of the stud 92 is rotatably connected to the clamping plate 93. The tube screen 10 is located between the clamping plate 91 and the clamping plate 93.
[0025] Place the tube screen 10 on the clamping plate 2 93, rotate the stud 92, the stud 92 drives the clamping plate 2 93 to rise and cooperate with the clamping plate 1 91 to clamp the tube screen 10.
[0026] Clamping plate 1 91 and clamping plate 2 93 can clamp both ends of scraper 13. When scraper 13 is clamped, the rotation path of the two sides of the scraper coincides with the inner surface of cylinder 1. The upper and lower semi-circular arc plates of cylinder 1 are locked by locking mechanism 12.
[0027] When the scraper 13 is used, the two half-circular arc plates are locked by the locking mechanism 12, and the clamp plate 1 and the clamp plate 2 drive the scraper 13 to rotate. Since the rotation paths of the two side edges of the scraper 13 coincide with the inner surface of the cylinder 1 when the scraper 13 is clamped, the rotation of the scraper 13 scrapes the paint on the inner wall of the cylinder, facilitating recycling.
[0028] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0029] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art. The mechanical parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.
[0030] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A boiler tube panel erosion shield spray apparatus characterized by: Include: The cylinder (1) is horizontally arranged and connected to the base (2), the upper hole of the cylinder (1) is connected with the material pipe (3), the lower end of the material pipe (3) is connected with the plasma nozzle, the upper end of the material pipe (3) is connected with the material box (4), the material pipe (3) is connected with the air pipe (5) through the valve, the air pipe (5) is connected with the air outlet end of the air pump, the base (2) is connected with the bearing frame (6) at both ends, the bearing frame (6) is rotatably connected with the corresponding rotating shaft (7) inside, the rotating shaft (7) is concentrically arranged with the cylinder (1), the rotating shaft (7) is slidably connected with the rotating drum (8), the rotating drum (8) is connected with the clamp (9) at the inner end, and the two side clamps (9) can clamp the tube screen (10) inside the cylinder (1).
2. A boiler tube panel erosion shield spray apparatus as defined in claim 1 wherein: The cylinder (1) is made of two upper and lower half-circular arc plates which are hinged and spliced, and the air pipe (5) is connected with the air outlet end of the air pump through the hose (11).
3. A boiler tube panel erosion shield spray apparatus as defined in claim 2 wherein: The clamp (9) includes a clamping plate (91), which is connected to the inner end of the rotating drum (8), and the clamping plate (91) is threadedly connected with the stud (92) inside, and the stud (92) is rotatably connected to the clamping plate (93) at the lower end, and the tube screen (10) is located between the clamping plate (91) and the clamping plate (93).
4. A boiler tube panel erosion shield spray apparatus as defined in claim 3 wherein: The clamping plate (91) and the clamping plate (93) can clamp the two ends of the scraper (13), when the scraper (13) is clamped, the rotating path of the two side edges coincides with the inner surface of the cylinder (1), and the upper and lower two parts of the half-circular arc plate of the cylinder (1) are locked by the locking mechanism (12).