Laser cladding inert gas circulation protective cover

Abstract

The utility model discloses a laser cladding inert gas circulation protective cover which comprises an upper protective shell and a lower protective shell which are arranged below the upper protective shell, the lower protective shell is connected with the upper protective shell in a welded mode, and the lower protective shell is arranged in a conical mode. The first annular plate is arranged in the upper protective shell, a second annular plate is arranged in the first annular plate, an inner cavity is formed in the second annular plate, a second spiral plate is fixedly installed in the inner cavity of the second annular plate, and an outer cavity is formed between the upper protective shell and the first annular plate; a first spiral plate is arranged in the outer cavity, the upper protection shell and the first annular plate are fixedly connected with the first spiral plate, and a middle cavity is formed between the first annular plate and the second annular plate. The laser cladding inert gas circulation protective cover realizes the capability of guiding inert gas during use, so that the inert gas can stably act on a cladding area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protective cover especially relates to a laser cladding inert gas circulation protective cover. BACKGROUND

[0002] As an advanced surface modification technology, laser cladding can significantly improve the wear resistance, corrosion resistance, high temperature resistance and other properties of the base material by cladding a layer of alloy material with specific properties on the surface of the base material, and has been widely used in many fields such as aerospace, automobile manufacturing, energy and power, etc. However, the laser cladding process has very strict requirements on the cladding environment. During the cladding process, high temperature can easily cause the cladding material and the base material to chemically react with oxygen, water vapor and other substances in the air, resulting in defects such as pores, inclusions and oxidation in the cladding layer. Therefore, a protective cover is needed during the laser cladding process to provide an oxygen-free and impurity-free environment for the cladding area through the circulation of inert gas (such as argon), thereby ensuring the quality and performance of the cladding layer.

[0003] For example, the patent with the announcement number CN217266009U (a flexible gas protective cover for laser cladding equipment) includes a bottom frame with an iron top, the opposite inner walls of the two sides of the bottom frame are provided with guide rail mounting grooves, the inside of the guide rail mounting grooves is inserted with guide rails, the outer wall top side of the guide rails is provided with a top plate, the top plate is provided with guide rail holes matched with the guide rails, the bottom edge of the top plate is connected with a transparent telescopic protective cover, and the telescopic protective cover and the top plate are provided with negative pressure quick connectors, inflation quick connectors, cladding quick connectors and cooling water pipe quick connectors.

[0004] Although the above-mentioned prior art realizes the functions of quick installation and fixation of the protective cover and the laser cladding head, it does not have a gas flow guiding structure, and the gas protection mode of the traditional protective cover is dispersed, which is not convenient for fully acting on the cladding area and cannot stably protect the cladding area. Therefore, we propose the laser cladding inert gas circulation protective cover. UTILITY MODEL CONTENTS

[0005] One object of the utility model is to solve at least the above-mentioned problems and provide at least the advantages to be explained later.

[0006] Another object of the utility model is to provide the laser cladding inert gas circulation protective cover, which realizes the ability of guiding the inert gas when the laser cladding inert gas circulation protective cover is used, so that the inert gas can stably act on the cladding area.

[0007] To achieve the above-mentioned objects and some other objects, the utility model adopts the following technical solutions:

[0008] A laser cladding inert gas circulation protective cover, comprising: an upper protective shell,

[0009] The lower protective shell is arranged below the upper protective shell and is welded to the upper protective shell, and the lower protective shell is tapered;

[0010] The first ring plate is arranged inside the upper protective shell, an inner cavity of the second ring plate is arranged inside the first ring plate, the second spiral plate is fixedly installed inside the inner cavity of the second ring plate, the outer cavity is arranged between the upper protective shell and the first ring plate, the first spiral plate is arranged inside the outer cavity, the first ring plate and the first spiral plate are fixedly connected, and the middle cavity is arranged between the first ring plate and the second ring plate.

[0011] Preferably, the top cover is fixedly installed above the upper protective shell, the air supply pipes are fixedly installed on one side above the top cover, and the three air supply pipes are in communication with the outer cavity, the middle cavity and the inner cavity inside the upper protective shell respectively.

[0012] Preferably, the connecting barrel is fixedly installed above the top cover, the circular hole is arranged inside the top cover below the connecting barrel, and the inner cavity of the second ring plate is in communication with the connecting barrel through the circular hole of the top cover.

[0013] Preferably, the mounting barrel is arranged above the connecting barrel and extends into the inside of the connecting barrel at the lower end of the mounting barrel, the inner thread is arranged on the inner side end face of the connecting barrel, the outer thread is arranged below the outer side end face of the mounting barrel, and the threaded holes are symmetrically arranged at the front end and the rear end of the inside of the mounting barrel respectively.

[0014] Preferably, the outer ring box is fixedly installed outside the upper protective shell, the temperature guide ring plate is fixedly installed inside the outer ring box along the outside of the upper protective shell and is in contact with the upper protective shell, the spiral water pipe is arranged outside the temperature guide ring plate, the water inlet pipe is fixedly installed above one side of the outer ring box and is fixedly connected with one end of the spiral water pipe, and the water outlet pipe is fixedly installed below one side of the outer ring box and is fixedly connected with the other end of the spiral water pipe.

[0015] Preferably, the spiral groove is arranged on the outer side end face of the temperature guide ring plate, the spiral water pipe is embedded in the spiral groove of the temperature guide ring plate, and the temperature guide ring plate is made of die-cast aluminum alloy.

[0016] Preferably, the temperature insulation pad is fixedly installed inside the outer ring box.

[0017] The utility model at least has following beneficial effects:

[0018] 1. The utility model discloses a first spiral plate is arranged in the outer cavity between the upper protective shell and the first ring plate to form an outer layer flow guide channel, the middle cavity between the first ring plate and the second ring plate forms a middle layer airflow channel, and the second spiral plate is arranged in the inner cavity of the second ring plate to constitute an inner layer flow guide structure, three layers of airflow guide make inert gas form a layered and orderly flow state in the protective cover, the outer layer spiral airflow forms a protective barrier, the middle layer airflow maintains stable transition, and the inner layer spiral airflow produces a centripetal focusing effect, compared with the diffusion type airflow distribution of the traditional protective cover, the structure is guided by the spiral flow guide plate, makes the inert gas more concentrated and more efficient in the cladding area, and ensures that the cladding area obtains a continuous and stable inert gas protection environment.

[0019] 2. The utility model discloses a mounting cylinder is arranged on the upper side of the connecting cylinder, and the mounting cylinder is screwed with the connecting cylinder 3, convenient for the installation and dismounting of the protective cover, and the symmetrical screw holes in the inside of the mounting cylinder are favorable to the mounting cylinder installation on the laser cladding head, increase practicality.

[0020] 3. The utility model discloses a cooling structure that outer ring box, guide temperature ring board and spiral water pipe constitute can reduce the temperature of upper protective shell, and the outer side of guide temperature ring board sets up spiral recess and embeds spiral water pipe, increased the contact area of water pipe and guide temperature ring board, improved the heat transfer efficiency, simultaneously adopted the guide temperature ring board that pressure die aluminium alloy made, has good heat conduction performance, increased the stability of protective cover cooling.

[0021] The other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by the person skilled in the art through the research and practice of the utility model. ACCURACY OF DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of a laser cladding inert gas circulation protective cover of the utility model;

[0023] Figure 2 It is the structure schematic diagram of the circular shell of the utility model;

[0024] Figure 3 It is the enlarged schematic view of A part of the utility model;

[0025] Figure 4 It is the section view of the outer ring box of the utility model. DETAILED DESCRIPTION

[0026] The utility model will be described in detail below in combination with the drawings, so that the person skilled in the art can implement according to the description after referring to the description.

[0027] As Figures 1-4 Shown, a kind of laser cladding inert gas circulation protective cover, comprising: upper protective shell 1,

[0028] A lower protective shell 16 is arranged below the upper protective shell 1, and the lower protective shell 16 is welded to the upper protective shell 1, and the lower protective shell 16 is conical.

[0029] A first ring plate 5 is arranged inside the upper protective shell 1, the inside of the first ring plate 5 is provided with a second ring plate 6, the inside of the second ring plate 6 is provided with an inner cavity, and the inner cavity of the second ring plate 6 is fixedly installed with a second spiral plate 8, and the upper protective shell 1 and the first ring plate 5 are provided with an outer cavity, and the inner cavity of the outer cavity is provided with a first spiral plate 7, and the upper protective shell 1 and the first ring plate 5 are fixedly connected with the first spiral plate 7, and the first ring plate 5 and the second ring plate 6 are provided with a middle cavity.

[0030] In the above scheme, the first spiral plate is arranged in the outer cavity between the upper protective shell and the first ring plate to form an outer layer flow guide channel, the middle cavity between the first ring plate and the second ring plate forms a middle layer airflow channel, and the second spiral plate is arranged in the inner cavity of the second ring plate to form an inner layer flow guide structure, three layers of airflow guide make the inert gas form a layered and orderly flow state inside the protective cover, the outer layer spiral airflow forms a protective barrier, the middle layer airflow maintains stable transition, and the inner layer spiral airflow produces a centripetal focusing effect, so that the inert gas more concentratedly and efficiently acts on the cladding area, and the cladding area is ensured to obtain a continuous and stable inert gas protection environment.

[0031] In a preferred scheme, the top cover 2 is fixedly installed above the upper protective shell 1, the gas supply pipes 9 are fixedly installed on one side above the top cover 2, and the three gas supply pipes 9 are in communication with the outer cavity, the middle cavity and the inner cavity in the upper protective shell 1 respectively.

[0032] In the above scheme, the three gas supply pipes in communication with the outer cavity, the middle cavity and the inner cavity respectively can realize independent gas supply of different airflow channels, and compared with a single gas supply mode, the design can adjust the flow and pressure of inert gas of each layer according to the actual needs of each layer of airflow channel, and the practicability is increased.

[0033] In a preferred scheme, the connecting cylinder 3 is fixedly installed above the top cover 2, the circular hole is arranged inside the top cover 2 below the connecting cylinder 3, and the inner cavity of the second ring plate 6 is in communication with the connecting cylinder 3 through the circular hole of the top cover 2.

[0034] In the above scheme, the communication between the second ring plate and the connecting cylinder is convenient for the protective cover to be installed on the laser cladding head, and the practicability is increased.

[0035] In one preferred embodiment, the upper end of the mounting cylinder 4 extends into the interior of the connecting cylinder 3, the inner side end face of the connecting cylinder 3 is provided with an internal thread, the outer side end face of the mounting cylinder 4 is provided with an external thread, and the front end and the rear end of the interior of the mounting cylinder 4 are respectively provided with a threaded hole 401.

[0036] In the above-mentioned embodiment, the mounting cylinder and the connecting cylinder are connected by threads, which facilitates installation and disassembly, and the symmetrically arranged threaded holes in the interior of the mounting cylinder facilitate the mounting of the mounting cylinder on the laser cladding head.

[0037] In one preferred embodiment, the outer side of the upper protective shell 1 is fixedly mounted with an outer ring box 10, the interior of the outer ring box 10 is fixedly mounted along the outer side of the upper protective shell 1 with a temperature guide ring plate 14, the temperature guide ring plate 14 is in contact with the upper protective shell 1, the outer side of the temperature guide ring plate 14 is provided with a spiral water pipe 13, the upper side of one side of the outer ring box 10 is fixedly mounted with a water inlet pipe 11, the water inlet pipe 11 is fixedly connected with one end of the spiral water pipe 13, and the lower side of one side of the outer ring box 10 is fixedly mounted with a water outlet pipe 12, the water outlet pipe 12 is fixedly connected with the other end of the spiral water pipe 13.

[0038] In the above-mentioned embodiment, the cooling structure composed of the outer ring box, the temperature guide ring plate, and the spiral water pipe can reduce the temperature of the upper protective shell, the upper protective shell will be heated due to the high-temperature environment during the laser cladding process, and the excessively high temperature may affect the structural stability and service life of the protective cover, and then the heat of the upper protective shell is taken away by the cooling water circulating in the spiral water pipe, thereby reducing the temperature of the protective cover, and at the same time, the temperature guide ring plate is in contact with the upper protective shell, which can more efficiently transfer heat and improve the cooling effect and increase the practicability.

[0039] In one preferred embodiment, the outer side end face of the temperature guide ring plate 14 is provided with a spiral groove, the spiral water pipe 13 is embedded in the spiral groove of the temperature guide ring plate 14, and the temperature guide ring plate 14 is made of die-cast aluminum alloy.

[0040] In the above-mentioned embodiment, the spiral groove is provided on the outer side of the temperature guide ring plate and the spiral water pipe is embedded, which increases the contact area of the water pipe and the temperature guide ring plate and improves the heat transfer efficiency, and at the same time, the temperature guide ring plate made of die-cast aluminum alloy has good heat conduction performance and can quickly conduct the heat of the upper protective shell to the spiral water pipe, thereby increasing the stability of the cooling of the protective cover.

[0041] In one preferred embodiment, the inner side of the outer ring box 10 is fixedly mounted with a temperature insulation pad 15.

[0042] In the above-mentioned embodiment, the temperature insulation pad can reduce the transmission of temperature between the interior and the exterior of the outer ring box, thereby increasing the practicability.

[0043] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. A laser cladding inert gas shroud loop guard, wherein, Include: Upper protective shell, Lower protective shell, which is arranged below the upper protective shell, and the lower protective shell is welded with the upper protective shell, the lower protective shell is tapered; The first ring plate is arranged inside the upper protective shell, the inside of the first ring plate is provided with the second ring plate, the inside of the second ring plate is provided with the inner cavity, the inner cavity of the second ring plate is fixedly installed with the second spiral plate, the outer cavity is arranged between the upper protective shell and the first ring plate, the inner cavity of the outer cavity is provided with the first spiral plate, the upper protective shell and the first ring plate are fixedly connected with the first spiral plate, the first ring plate and the second ring plate are provided with the middle cavity.

2. The laser cladding inert gas annular flow shield of claim 1, wherein, The upper part of the upper protective shell is fixedly installed with the top cover, one side of the top cover is fixedly installed with the gas supply pipe, the gas supply pipe is provided with three, three gas supply pipes are communicated with the outer cavity, the middle cavity and the inner cavity in the upper protective shell respectively.

3. The laser cladding inert gas annular flow shield of claim 2, wherein, The top of the top cover is fixedly installed with the connecting barrel, the inside of the top cover is provided with a circular hole below the connecting barrel, the inner cavity of the second ring plate is communicated with the connecting barrel through the circular hole of the top cover.

4. The laser cladding inert gas annular flow shield of claim 3, wherein, The upper part of the connecting barrel is provided with a mounting barrel, and the lower end of the mounting barrel extends into the inside of the connecting barrel, the inner side end face of the connecting barrel is provided with an internal thread, the lower part of the outer side end face of the mounting barrel is provided with an external thread, the front end and the rear end of the inside of the mounting barrel are respectively and symmetrically provided with threaded holes.

5. The laser cladding inert gas annular flow shield of claim 1 wherein, The outer side of the upper protective shell is fixedly installed with an outer ring box, the inside of the outer ring box is fixedly installed with a temperature guide ring plate along the outer side of the upper protective shell, and the temperature guide ring plate is in contact with the upper protective shell, the outer side of the temperature guide ring plate is provided with a spiral water pipe, the upper part of one side of the outer ring box is fixedly installed with a water inlet pipe, one end of the water inlet pipe is fixedly connected with the spiral water pipe, the lower part of one side of the outer ring box is fixedly installed with a water outlet pipe, the other end of the spiral water pipe is fixedly connected with the water outlet pipe.

6. The laser cladding inert gas annular flow shield of claim 5, wherein, The outer side end face of the temperature guide ring plate is provided with a spiral groove, the spiral water pipe is embedded in the spiral groove of the temperature guide ring plate, and the temperature guide ring plate is made of die-casting aluminum alloy.

7. The laser cladding inert gas annular flow shield of claim 6 wherein, The inner side of the outer ring box is fixedly installed with a temperature insulation pad.

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