A nitrogenization furnace wall anticorrosion device

Abstract

The utility model relates to nitrogenization furnace wall anticorrosion spraying equipment technical field, especially nitrogenization furnace wall anticorrosion device, including spray gun, the spray gun includes the spray head, the spray head surface is equipped with the joint piece, the joint piece surface swing installation has the movable part, the joint piece includes the inner lining cylinder, the spray head surface symmetry is connected with two clamping blocks, and the clamping block is inlayed and is connected in the inner lining cylinder right side inside through the clamping groove, the spray head left side threaded butt joint has the spray pipe, the spray head right side threaded butt joint has the external connection pipe, the utility model discloses the swing structure and movable part cooperation through the setting, makes the spray gun can along the nitrogenization furnace inner wall steady rotation and sprays, avoided the problem such as the uneven coating thickness, orange peel like defect caused by the angle and distance inconsistency in manual operation, significantly improved the integrity and anticorrosion performance of coating.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-corrosion spraying equipment for nitriding furnace walls, and in particular to an anti-corrosion device for nitriding furnace walls. Background Technology

[0002] A nitriding furnace is a heat treatment device used for metal surface treatment. It penetrates nitrogen atoms into the metal surface at high temperatures to form a hard nitrided layer, thereby improving the metal's hardness, wear resistance, and corrosion resistance. However, under the action of high temperature and corrosive gases (such as ammonia), the furnace wall material of the nitriding furnace is easily corroded, resulting in a shortened equipment life and increased maintenance costs.

[0003] To extend the service life of nitriding furnaces and reduce maintenance costs, anti-corrosion coating technology is widely used for the protection of furnace walls. Anti-corrosion coatings form a dense protective film on the furnace wall surface, effectively blocking the erosion of corrosive gases and thus improving the corrosion resistance of the furnace wall. However, in practical applications, various defects may occur during the spraying process of anti-corrosion coatings. These defects can seriously affect the protective effect of the coating. For example, manually spraying the annular cylinder wall of the nitriding furnace with a handheld spray gun can result in different angles and spraying distances. Too small an angle may lead to uneven coating thickness, while too large a spraying distance may cause orange peel-like defects on the coating surface. Therefore, a corrosion protection device for nitriding furnace walls is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A corrosion protection device for the furnace wall of a nitriding furnace includes a spray gun, the spray gun including a nozzle, a snap-fit ​​component sleeved on the surface of the nozzle, and a movable part movably mounted on the surface of the snap-fit ​​component. The snap-fit ​​component includes an inner liner, and two snap-fit ​​blocks are symmetrically connected to the surface of the nozzle, and the snap-fit ​​blocks are embedded in the inside of the right side of the inner liner through snap-fit ​​grooves; The nozzle has a nozzle pipe threaded to its left side and an external nozzle pipe threaded to its right side.

[0006] Preferably, the movable part includes a sleeve, and three support plates are arranged around the surface of the sleeve. A telescopic rod is installed at the end of the support plate, and a wheel frame is installed at the end of the telescopic rod. The sleeve is positioned by the three wheel frames to ensure that the sleeve is suspended at the center of the nitriding furnace.

[0007] Preferably, the inner liner is connected to two rotating rings on its surface, and the rotating rings are movably installed on the inner wall of the sleeve through ring grooves. The inner liner can be positioned by the cooperation between the sleeve and the rotating rings, ensuring that the inner liner rotates stably in the sleeve, which facilitates the subsequent rotation and adjustment of the nozzle.

[0008] Preferably, a plurality of rubber pads are arranged around the left side of the inner wall of the inner liner, and the inner end face of the rubber pads is attached to the surface of the nozzle. The rubber pads arranged around the inner wall of the inner liner can support the nozzle and prevent it from shaking when it is inserted into the inner liner.

[0009] Preferably, the inner end face of the rubber pad is provided with a plurality of rubber protrusions, and the rubber protrusions are horizontally arranged from left to right. The rubber pad can support the nozzle, and the axial direction of the rubber protrusions on the inner wall of the rubber pad can be adapted to the nozzle.

[0010] Preferably, a limiting shaft is embedded in the inner wall of the inner liner groove through a through hole, and a limiting shaft is sleeved on the surface of the limiting shaft. One end of the limiting shaft is fixed to the end face of the inner wall of the through hole of the inner liner. The locking block is embedded in the locking groove of the inner liner, which can quickly complete the docking of the nozzle and the inner liner.

[0011] Preferably, the limiting shaft consists of a shaft end and a ball end. The ball end of the limiting shaft is embedded in the right side of the locking block through a groove. The displacement of the limiting shaft under pressure can compress the return spring. When the ball end of the limiting shaft is adapted to the groove of the locking block, the elastic force of the return spring can push the ball end of the limiting shaft to achieve quick locking between the limiting shaft and the locking block.

[0012] This utility model has at least the following beneficial effects: 1. By using a rotating ring structure in conjunction with the moving part, the spray gun can rotate stably along the inner wall of the nitriding furnace, avoiding problems such as uneven coating thickness and orange peel defects caused by inconsistent angles and distances during manual operation, thus significantly improving the integrity and corrosion resistance of the coating.

[0013] 2. The device is equipped with an adjustable telescopic rod and wheel frame structure, which can be flexibly adjusted according to the inner diameter of the nitriding furnace to ensure that the spray gun is always located in the center of the furnace body. At the same time, the use of snap-fit ​​and spring limiting structure enables the spray gun to be quickly installed and fixed, improving construction efficiency and equipment adaptability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the external structure of a corrosion prevention device for the furnace wall of a nitriding furnace proposed in this utility model; Figure 2 This is a schematic diagram of the external disassembly structure of a corrosion prevention device for the furnace wall of a nitriding furnace proposed in this utility model; Figure 3 This is a schematic diagram showing the disassembly of the spray gun and the snap-fit ​​component in the combined state of the anti-corrosion device for the furnace wall of a nitriding furnace proposed in this utility model. Figure 4 This is a three-dimensional disassembly diagram of the snap-fit ​​component in the anti-corrosion device for the furnace wall of a nitriding furnace proposed in this utility model.

[0016] In the diagram: 1. Spray gun; 11. Nozzle; 12. Spray pipe; 13. Outer pipe; 14. Locking block; 2. Connecting piece; 21. Inner liner; 22. Rotary ring; 23. Limiting shaft; 24. Return spring; 25. Rubber pad; 3. Moving part; 31. Sleeve; 32. Support plate; 33. Telescopic rod; 34. Wheel frame. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Reference Figures 1-4 A corrosion protection device for the furnace wall of a nitriding furnace includes a spray gun 1, the spray gun 1 includes a nozzle 11, a snap-fit ​​part 2 is sleeved on the surface of the nozzle 11, and a movable part 3 is movably installed on the surface of the snap-fit ​​part 2. The snap-fit ​​component 2 includes an inner liner 21, and two snap-fit ​​blocks 14 are symmetrically connected to the surface of the nozzle 11. The snap-fit ​​blocks 14 are snapped into the inside of the right side of the inner liner 21 through snap-fit ​​grooves. The nozzle 11 has a threaded connection to the nozzle pipe 12 on the left side and an external pipe 13 on the right side.

[0019] The movable part 3 includes a sleeve 31, three support plates 32 are arranged around the surface of the sleeve 31, and a telescopic rod 33 is installed at the end of the support plate 32, and a wheel frame 34 is installed at the end of the telescopic rod 33.

[0020] Two rotating rings 22 are connected to the surface of the inner liner 21, and the rotating rings 22 are movably installed on the inner wall of the sleeve 31 through the ring groove.

[0021] Several rubber pads 25 are arranged around the left side of the inner wall of the inner liner 21, and the inner end face of the rubber pads 25 is attached to the surface of the nozzle 11.

[0022] The inner end face of the rubber pad 25 is provided with several rubber protrusions, and the rubber protrusions are arranged horizontally from left to right.

[0023] The inner wall of the inner liner 21 is fitted with a limiting shaft 23 through a through hole, and the surface of the limiting shaft 23 is fitted with a limiting shaft 23. One end of the limiting shaft 23 is fixed to the end face of the inner wall of the through hole of the inner liner 21.

[0024] The limiting shaft 23 consists of a shaft end and a ball end. The ball end of the limiting shaft 23 is embedded in the right side of the locking block 14 through a groove.

[0025] Two wheel sets are provided on both ends of the wheel frame 34, which can be supported on the inner wall of the nitriding furnace. The telescopic rod 33 consists of a telescopic inner rod, an outer rod sleeve, and side locking bolts. The telescopic inner rod can move in the outer rod, which can adjust the position of the wheel frame 34. The sleeve 31 is positioned by the three wheel frames 34 to ensure that the sleeve 31 is suspended in the center of the nitriding furnace. The inner lining cylinder 21 is positioned by the sleeve 31 cooperating with the rotating ring 22, which ensures that the inner lining cylinder 21 rotates stably in the sleeve 31, which facilitates the subsequent installation of the nozzle 11. The spray nozzle 12 is rotated and adjusted to ensure stable spraying inside the nitriding furnace, resulting in a uniform coating distribution on the furnace wall surface. This avoids coatings that are too thick or too thin, thus ensuring the integrity and protective performance of the coating. The rotational power of the inner liner 21 can be controlled by an external gear and an external motor, or by the rotation of the spray nozzle 11. In this design, the inner liner 21 is simply configured as a rotatable structure to facilitate subsequent practical applications.

[0026] The nozzle 11 can be supported by the rubber pad 25 surrounding the inner wall of the inner liner 21, preventing the nozzle 11 from shaking when it is inserted into the inner liner 21. After the nozzle 11 is inserted into the inner liner 21, the rubber pad 25 can provide auxiliary support for the nozzle 11. The rubber protrusions on the inner wall of the rubber pad 25 can be axially adapted to the nozzle 11 to ensure the stability of the nozzle 11 installed in the inner liner 21.

[0027] After the nozzle 11 is inserted into the inner liner 21, it can be embedded in the groove on the inner wall of the inner liner 21 by the locking block 14. The locking block 14 can be reversed by the limiting shaft 23 to ensure the stability of the docking between the nozzle 11 and the inner liner 21. The locking block 14 can be embedded in the groove of the inner liner 21 to quickly complete the docking between the nozzle 11 and the inner liner 21. After the locking block 14 is embedded in the groove of the inner liner 21, with the rotation and movement of the locking block 14, the locking block 14 can squeeze the ball end of the limiting shaft 23. The displacement of the limiting shaft 23 under pressure can compress the return spring 24. When the ball end of the limiting shaft 23 is matched with the groove of the locking block 14, the elasticity of the return spring 24 can push the ball end of the limiting shaft 23 to achieve quick locking between the limiting shaft 23 and the locking block 14, ensuring the stability of the locking block 14 and the groove of the inner liner 21.

[0028] Working principle: According to Figure 2 and Figure 3As shown, during use, the nozzle 11 is inserted into the inner liner 21 from the right side, so that the locking block 14 is embedded in the right side slot of the inner liner 21. By rotating the nozzle 11, the locking block 14 is engaged in the slot of the inner liner 21. At this time, the spring force of the return spring 24 pushes the limiting shaft 23, so that the ball end of the limiting shaft 23 is engaged in the groove on the surface of the locking block 14. After the nozzle 11 is fixed, the spray pipe 12 and the outer pipe 13 are threaded together at both ends of the nozzle 11. When connecting, a rubber ring can be sleeved to improve the sealing. The end of the outer pipe 13 is connected to the material tank. The coating is pressurized and accelerated during the pressurization of the pressurizing equipment. Secondly, according to Figure 2 As shown, the telescopic rod 33 consists of telescopic inner and outer rod ends and locking bolt ends. The overall length of the telescopic rod 33 is adjusted according to the inner diameter of the inner wall of the nitriding furnace and with the help of a measuring ruler. The telescopic inner rod moves in the outer rod and is fixed with the locking bolt, so that the wheel sets on both sides of the wheel frame 34 abut against the inner wall of the nitriding furnace. The inner liner 21 rotates in the sleeve 31 and pulls the sleeve 31, which allows the spray pipe 12 to move while rotating to perform anti-corrosion spraying on the inner wall of the nitriding furnace.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for preventing corrosion of the walls of a nitriding furnace, comprising a lance (1), characterized in that, The spray gun (1) includes a nozzle (11), and a snap-fit ​​part (2) is sleeved on the surface of the nozzle (11). A movable part (3) is movably installed on the surface of the snap-fit ​​part (2). The snap-fit ​​component (2) includes an inner liner (21), and two snap-fit ​​blocks (14) are symmetrically connected to the surface of the nozzle (11), and the snap-fit ​​blocks (14) are snap-fitted into the inside of the right side of the inner liner (21) through the snap-fit ​​groove; The nozzle (11) has a nozzle pipe (12) threadedly connected to its left side, and an external pipe (13) threadedly connected to its right side.

2. The apparatus for preventing corrosion of the furnace wall of a nitriding furnace according to claim 1, wherein The movable part (3) includes a sleeve (31), three support plates (32) are arranged around the surface of the sleeve (31), and a telescopic rod (33) is installed at the end of the support plate (32), and a wheel frame (34) is installed at the end of the telescopic rod (33).

3. The apparatus for preventing corrosion of the furnace wall of a nitriding furnace according to claim 1, wherein The inner liner (21) has two rotating rings (22) connected to its surface, and the rotating rings (22) are movably installed on the inner wall of the sleeve (31) through the ring groove.

4. The apparatus for preventing corrosion of the furnace wall of a nitriding furnace according to claim 3, wherein The inner wall of the inner liner (21) is surrounded by several rubber pads (25), and the inner end face of the rubber pads (25) is attached to the surface of the nozzle (11).

5. The apparatus for preventing corrosion of the furnace wall of a nitriding furnace according to claim 4, wherein The inner end face of the rubber pad (25) is provided with several rubber protrusions, and the rubber protrusions are arranged horizontally from left to right.

6. The apparatus for preventing corrosion of the furnace wall of a nitriding furnace according to claim 4, wherein The inner wall of the liner (21) slot is fitted with a limiting shaft (23) through the through hole, and the surface of the limiting shaft (23) is fitted with a limiting shaft (23). One end of the limiting shaft (23) is fixed to the end face of the inner wall of the through hole of the inner liner (21).

7. The apparatus for preventing corrosion of the furnace wall of a nitriding furnace according to claim 6, wherein The limiting shaft (23) is composed of a shaft end and a ball end. The ball end of the limiting shaft (23) is embedded in the right side of the card block (14) through a groove.

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