Welding fire receiving basin

Abstract

The invention relates to a welding fire receiving pan. The device comprises a sling magnetically adsorbed to a workpiece through an electromagnetic chuck, a fire receiving hopper and a powder leakage hopper which are arranged on the sling, an exhaust fan set arranged on the side wall of the fire receiving hopper, a fireproof pad in lap joint with the bottom wall of the fire receiving hopper, and a plurality of hopper outlets formed in the side wall of the powder leakage hopper. The powder leaking hopper is filled with the modified silica gel powder, and the powder leaking hopper is arranged above the fireproof pad in the mode that a hopper outlet is communicated with an inner cavity of the fire receiving hopper. By means of the mode that air suction of the exhaust fan set is combined with flame retardance of the modified silica gel powder, effective collection and rapid cooling of welding slag in the welding process are achieved, welding slag splashing and spark diffusion can be effectively prevented, and therefore the safety of welding operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building welding, in particular to a welding fire basin. Background Art

[0002] Truss arch bridge refers to an arch bridge with a solid web section in the middle and arched truss pieces on both sides. The truss arch pieces are connected as a whole by the bridge deck system and the transverse connection system. The characteristic is that the solid web section and the arched truss pieces on both sides play the role of arch force bearing, and the arch foot has a horizontal thrust to reduce the mid-span bending moment; this kind of bridge is more reasonable than the rib arch bridge with arch structure, which can save materials and reduce deadweight, and is suitable for occasions with poor foundation. The installation of truss arch pieces is divided into: installation with brackets and installation without brackets. The former is suitable for bridges with small spans and favorable conditions such as flat riverbeds and shallow water under the bridge during installation; the latter is suitable for bridges that cross deep water and valleys or have multiple spans or large spans.

[0003] During the construction of the existing steel structure of the truss arch bridge, the installation and connection of the steel structure are mostly welded or bolted. During on-site welding, especially high-altitude welding, a large number of sparks flying everywhere are often generated. If you do not pay attention to protection, it is easy to cause personal safety accidents or fire accidents. Due to the narrow working surface and the distance from the ground, once an accident occurs, emergency rescue work is difficult. Therefore, it is necessary to place a fire basin under the welding point to receive the splashing welding fire and welding slag to ensure the safety of the construction site.

[0004] Existing fire basins include traditional hanging basket type, mesh folding type, drawer type, etc. Since these fire basins are usually placed horizontally, the splashed welding slag will remain in a high temperature and high heat state after falling on the above-mentioned fire basins. Moreover, since these fire basins are usually made of hard materials, the splashed welding slag will easily rebound after falling on the above-mentioned fire basins, thereby causing the received high-temperature welding slag to be easily splashed to the outside of the fire basin for a second time, which may cause a fire and pose a safety hazard. Summary of the invention

[0005] The problem to be solved by the present invention is to provide a welding fire basin in view of the above-mentioned deficiencies existing in the prior art. The welding fire basin realizes the effective collection and rapid cooling of welding slag during welding by combining the air suction of the exhaust fan unit with the flame retardant of modified silica gel powder, and can effectively prevent the splashing of welding slag and the spread of sparks, thereby improving the safety of welding operations.

[0006] The above-mentioned object of the present invention is achieved through the following technical solutions: A welding fire receiving basin comprises a sling magnetically attached to a workpiece by an electromagnetic suction cup, a fire receiving hopper and a powder funnel arranged on the sling, an exhaust fan arranged on the side wall of the fire receiving hopper, a fireproof pad overlapped on the bottom wall of the fire receiving hopper, a plurality of funnel outlets opened on the side wall of the powder funnel, and modified silica gel powder filled in the powder funnel, wherein the powder funnel is arranged above the fireproof pad in a manner that the funnel outlet is connected to the inner cavity of the fire receiving hopper.

[0007] By adopting the above technical scheme, one or more slings can be correspondingly arranged according to the relative position between the fire hopper and the workpiece, the upper end of the sling is connected to the electromagnetic suction cup, and the lower end is connected to the fire hopper and the powder hopper, and the magnetic force is generated in advance by the electromagnetic suction cup to firmly adsorb to the bottom wall or side wall of the workpiece; during welding, after the welding slag on the workpiece falls on the fireproof pad, the exhaust fan unit is used to suck air on both sides of the welding slag, thereby realizing the effective collection and rapid cooling of the welding slag during the welding process, and can also effectively reduce the smoke concentration in the welding area and improve the working environment; at the same time, affected by the airflow formed by the suction, the modified silica gel powder will separate from the fire hopper through the funnel outlet and spread on the surface or around the welding slag, which not only improves the high temperature resistance and flame retardant properties of the powder hopper, but also can absorb harmful substances in the welding slag, further enhancing the safety and environmental protection of the welding fire basin; in addition, the welding fire basin of the present invention has a simple structure, is easy to install and maintain, and greatly improves the efficiency and safety of welding operations.

[0008] Furthermore, the side walls of the fire receiving bucket and the powder funnel are respectively provided with a plurality of lifting holes, and at least two lifting holes on the fire receiving bucket and at least two lifting holes on the powder funnel are respectively connected to the plurality of ends of the sling through U-shaped rope buckles. This design makes the welding fire receiving basin more stable during the hoisting process, avoiding the splashing of welding slag or unnecessary loss of silica gel powder due to shaking during transportation or use. In addition, the use of U-shaped rope buckles increases the reliability of the connection and ensures the structural integrity of the fire receiving basin in a high temperature environment. Through this structural design, the welding fire receiving basin can better adapt to various welding working environments and improve the safety and convenience of operation.

[0009] Furthermore, the powder hopper is configured to be in the shape of an inverted prism or an inverted convex platform. This design allows the powder hopper to have a larger volume and store more modified silica gel powder, thereby extending the service life of the welding fire basin. At the same time, the inverted prism or inverted convex platform structure helps the silica gel powder to evenly cover the surface of the welding slag, ensuring sufficient absorption of harmful substances. In addition, a powder hopper of this shape can reduce the scattering of silica gel powder during welding, further improving the cleanliness of the welding area and the safety of the operators.

[0010] Furthermore, the fireproof pad is asbestos cloth. The fireproof pad is made of asbestos cloth and has good high temperature resistance and heat insulation effect. During welding operations, the asbestos cloth fireproof pad can effectively prevent heat from being transferred to other parts of the fire basin, thereby protecting the fire basin from high temperature damage. At the same time, the fire-resistant properties of asbestos cloth also ensure that during the welding process, even if sparks fly onto the fireproof pad, there will be no risk of fire. In addition, the flexibility and tear resistance of asbestos cloth make it not easy to be damaged during use, extending the overall service life of the welding fire basin.

[0011] Furthermore, the modified silica gel powder is made of the following raw materials in parts by weight: 100.00 parts of silica gel powder, 20.00-30.00 parts of coffee grounds, 25.00-35.00 parts of acetaminohexanoic acid, and 1.00-2.00 parts of tetrabutyl titanate.

[0012] Furthermore, the modified silica gel powder also includes 0.50 to 1.50 parts of silica dimethyl silylate.

[0013] Furthermore, the modified silica powder also includes 2.00-5.00 parts of cetearyl glucoside.

[0014] Furthermore, the preparation process of the modified silica gel powder includes first stirring and mixing silica gel powder, coffee grounds and acetaminohexanoic acid, then adding tetrabutyl titanate, continuing stirring at 160-220°C for 60-240 minutes, and then adding dimethyl silylate and cetearyl glucoside, continuing stirring at 80-120°C for 30-60 minutes, cooling to room temperature and post-processing to obtain modified silica gel powder.

[0015] Furthermore, the preparation process of the modified silica gel powder includes grinding the silica gel powder in advance and controlling the particle size of the silica gel powder to be in the range of 40-45 μm.

[0016] Furthermore, the preparation process of the modified silica gel powder includes grinding the coffee grounds in advance and controlling the particle size of the coffee grounds to be in the range of 20-30 μm.

[0017] The modified silica powder prepared by the above preparation method is catalyzed by tetrabutyl titanate and surface-modified with acetaminohexanoic acid. Before and after covering the surface of welding slag, the silica powder first absorbs moisture in the air to achieve a preliminary flame retardant effect. When heated, the modified silica powder and coffee slag can decompose and absorb the heat on the surface of the burning object, while releasing a large amount of moisture to dilute the oxygen on the surface of the burning object. The decomposed active oxides are attached to the surface of the combustible, further preventing the combustion from proceeding, thereby achieving the purpose of flame retardancy. At the same time, the coffee slag contains sugars, which can form a protective film at high temperatures to prevent the further spread of the flame. In addition, the addition of dimethyl silylated silica and cetearyl glucoside not only improves the thermal stability of the modified silica powder, but also enhances its anti-melting ability at high temperatures. Therefore, when the modified silica powder is used in a welding fire basin, it can effectively prevent welding slag splashing and spark diffusion, thereby improving the safety of welding operations.

[0018] To sum up, the beneficial technical effects of the present invention are: the safety of welding operations is improved, while the emission of smoke and harmful gases generated during welding is reduced, which is environmentally friendly; in addition, the use of the modified silica gel powder also extends the service life of the welding fire basin and reduces maintenance costs; in practical applications, the material exhibits excellent flame retardant properties and good physical and chemical stability, and can adapt to various welding environments and conditions; therefore, the modified silica gel powder of the present invention not only improves the safety of welding operations, but also has significant economic and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a welded fire basin according to Example 1 of the present invention.

[0020] Figure 2 It is a schematic diagram of the connection relationship between the fire receiving hopper and the powder draining hopper of Example 1 of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the fire receiving bucket of embodiment 2 of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the powder hopper of embodiment 3 of the present invention.

[0023] In the figure, 1. sling; 2. fire receiving bucket; 3. powder leaking bucket; 4. exhaust fan unit; 5. fireproof pad; 6. funnel outlet; 7. modified silica gel powder; 8. hanging hole; 9. U-shaped rope buckle; 10. electromagnetic suction cup. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Example 1: Reference Figure 1 and Figure 2 , a welding fire receiving basin disclosed in the present invention, comprises a sling 1 magnetically attached to a workpiece by an electromagnetic chuck 10, a fire receiving hopper 2 and a powder funnel 3 arranged on the sling 1, an exhaust unit 4 arranged on the side wall of the fire receiving hopper 2, a fireproof pad 5 overlapped on the bottom wall of the fire receiving hopper 2, four funnel outlets 6 opened on the side wall of the powder funnel 3, and modified silica gel powder 7 filled in the powder funnel 3. Among them, the fireproof pad 5 is asbestos cloth, and the powder funnel 3 is arranged above the fireproof pad 5 in a manner that the funnel outlet 6 is connected to the inner cavity of the fire receiving hopper 2.

[0026] The implementation principle of this embodiment is: four slings 1 can be correspondingly arranged according to the relative position between the fire receiving bucket 2 and the workpiece, the upper end of the sling 1 is connected to the electromagnetic suction cup 10, and the lower end is connected to the fire receiving bucket 2 and the powder hopper 3, and the three slings 1 and the electromagnetic suction cup 10 on the side away from the workpiece can be extended and connected through a channel steel bracket, and the magnetic force is generated in advance by the electromagnetic suction cup 10 to firmly adsorb to the side wall of the workpiece. During welding, after the welding slag on the workpiece falls onto the fireproof pad 5, the exhaust unit 4 is used to suck air on both sides of the welding slag, thereby achieving effective collection and rapid cooling of the welding slag during welding, and can also effectively reduce the smoke concentration in the welding area and improve the working environment; at the same time, affected by the airflow formed by the suction, the modified silica gel powder 7 will separate from the fire hopper 2 through the funnel outlet 6 and spread on the surface or surroundings of the welding slag, which not only improves the high temperature resistance and flame retardant properties of the powder funnel 3, but also can absorb harmful substances in the welding slag, further enhancing the safety and environmental protection of the welding fire basin; in addition, the welding fire basin of the present invention has a simple structure, is easy to install and maintain, and greatly improves the efficiency and safety of welding operations.

[0027] Example 2: Reference Figure 3 , is a welding fire basin disclosed in the present invention, which is different from Example 1 in that two groups of lifting holes 8 are opened on the side wall of the fire basin 2, and the four lifting holes 8 at the four corners of the fire basin 2 are respectively connected to the four ends of the sling 1 through U-shaped rope buckles 9. This design makes the welding fire basin more stable during the lifting process, avoiding the splashing of welding slag or unnecessary loss of silica gel powder due to shaking during transportation or use. In addition, the use of U-shaped rope buckles 9 increases the reliability of the connection and ensures the structural integrity of the fire basin in a high temperature environment. Through this structural design, the welding fire basin can better adapt to various welding working environments and improve the safety and convenience of operation.

[0028] Example 3: Reference Figure 4, is a welding fire basin disclosed in the present invention, which is different from Example 1 in that the powder hopper 3 is arranged in a chamfered cone shape, and the side walls of the powder hopper 3 are respectively provided with four hanging holes 8, and the four hanging holes 8 on the powder hopper 3 are respectively connected to the four ends of the sling 1 through U-shaped rope buckles 9. This design makes the volume of the powder hopper 3 larger, and can store more modified silica gel powder 7, thereby extending the service life of the welding fire basin. At the same time, the chamfered cone-shaped or inverted boss-shaped structure helps the silica gel powder to evenly cover the surface of the welding slag, ensuring the full absorption of harmful substances. In addition, the powder hopper 3 of this shape can reduce the scattering of silica gel powder during the welding process, further improving the cleanliness of the welding area and the safety of the operators.

[0029] Example 4: A welding fire basin disclosed in the present invention, which is different from Example 1 in that the modified silica gel powder 7 is made of the following raw materials in parts by weight: 100.00 parts of silica gel powder, 26.80 parts of coffee grounds, 32.45 parts of acetaminophenic acid, 1.80 parts of tetrabutyl titanate, 1.20 parts of silica dimethyl silylate, and 4.02 parts of cetearyl glucoside.

[0030] The preparation process of modified silica gel powder 7 includes grinding silica gel powder and coffee grounds in advance, and controlling the particle size range of silica gel powder to be 40-45 μm, and the particle size range of coffee grounds to be 20-30 μm, first stirring and mixing silica gel powder, coffee grounds and acetaminophenic acid, and then adding tetrabutyl titanate, and continuing to stir at 200°C for 120 minutes, and then adding dimethyl silylate and cetearyl glucoside, and continuing to stir at 90°C for 50 minutes. After cooling to room temperature, post-treatment is performed to obtain modified silica gel powder 7.

[0031] The modified silica gel powder 7 prepared by the above-mentioned preparation method is catalyzed by tetrabutyl titanate and surface-modified with acetaminohexanoic acid. Before and after covering the surface of welding slag, the silica gel powder first absorbs moisture in the air to achieve a preliminary flame retardant effect. When heated, the modified silica gel powder 7 and coffee slag can decompose and absorb the heat on the surface of the burning object, while releasing a large amount of moisture to dilute the oxygen on the surface of the burning object. The active oxides generated by decomposition adhere to the surface of the combustible, further preventing the combustion from proceeding, thereby achieving the purpose of flame retardancy. At the same time, the coffee slag contains sugars, which can form a protective film at high temperatures to prevent the further spread of flames. In addition, the addition of dimethyl silylated silica and cetearyl glucoside not only improves the thermal stability of the modified silica gel powder 7, but also enhances its anti-melting ability at high temperatures. Therefore, when the modified silica gel powder 7 is used in a welding fire basin, it can effectively prevent welding slag splashing and spark diffusion, thereby improving the safety of welding operations.

[0032] Example 5: A welding fire basin disclosed in the present invention, which is different from Example 1 in that the modified silica gel powder 7 is made of the following raw materials in parts by weight: 100.00 parts of silica gel powder, 20.00 parts of coffee grounds, 25.00 parts of acetaminophenic acid, 1.00 parts of tetrabutyl titanate, 0.50 parts of silica dimethyl silylate, and 2.00 parts of cetearyl glucoside.

[0033] The preparation process of modified silica gel powder 7 includes grinding silica gel powder and coffee grounds in advance, and controlling the particle size range of silica gel powder to be 40-45 μm, and the particle size range of coffee grounds to be 20-30 μm, first stirring and mixing silica gel powder, coffee grounds and acetaminophenic acid, and then adding tetrabutyl titanate, and continuing to stir at 160°C for 60 minutes, and then adding dimethyl silylate and cetearyl glucoside, and continuing to stir at 80°C for 30 minutes, cooling to room temperature and post-processing to obtain modified silica gel powder 7.

[0034] Example 6: A welding fire basin disclosed in the present invention is different from Example 1 in that the modified silica gel powder 7 is made of the following raw materials in parts by weight: 100.00 parts of silica gel powder, 30.00 parts of coffee grounds, 35.00 parts of acetaminophen, 2.00 parts of tetrabutyl titanate, 1.50 parts of silica dimethyl silylate, and 5.00 parts of cetearyl glucoside.

[0035] The preparation process of modified silica gel powder 7 includes grinding silica gel powder and coffee grounds in advance, and controlling the particle size range of silica gel powder to be 45μm, and the particle size range of coffee grounds to be 20~30μm, first stirring and mixing silica gel powder, coffee grounds and acetaminophen, and then adding tetrabutyl titanate, and continuing to stir at 220°C for 240min, and then adding dimethyl silylate and cetearyl glucoside, and continuing to stir at 120°C for 3060min, cooling to room temperature and post-processing to obtain modified silica gel powder 7.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A welding fire basin, characterized in that: The invention comprises a sling (1) magnetically adsorbed on a workpiece by an electromagnetic suction cup (10), a fire receiving hopper (2) and a powder funnel (3) arranged on the sling (1), an exhaust fan unit (4) arranged on the side wall of the fire receiving hopper (2), a fireproof pad (5) overlapped on the bottom wall of the fire receiving hopper (2), a plurality of funnel outlets (6) opened on the side wall of the powder funnel (3), and modified silica gel powder (7) filled in the powder funnel (3), wherein the powder funnel (3) is arranged above the fireproof pad (5) in such a way that the funnel outlet (6) is connected to the inner cavity of the fire receiving hopper (2).

2. A welding fire basin according to claim 1, characterized in that: The side walls of the fire receiving bucket (2) and the powder draining bucket (3) are respectively provided with a plurality of hanging holes (8), and at least two hanging holes (8) on the fire receiving bucket (2) and at least two hanging holes (8) on the powder draining bucket (3) are respectively connected to the plurality of ends of the sling (1) through U-shaped rope buckles (9).

3. A welding fire basin according to claim 1, characterized in that: The powder hopper (3) is configured to be in the shape of an inverted prism or an inverted convex platform.

4. A welding fire basin according to claim 1, characterized in that: The fireproof mat (5) is asbestos cloth.

5. A welding fire basin according to claim 1, characterized in that: The modified silica gel powder (7) is prepared from the following raw materials in parts by weight: 100.00 parts of silica gel powder, 20.00-30.00 parts of coffee grounds, 25.00-35.00 parts of acetaminohexanoic acid, and 1.00-2.00 parts of tetrabutyl titanate.

6. A welding fire basin according to claim 5, characterized in that: The modified silica gel powder (7) further comprises 0.50 to 1.50 parts of dimethyl silylate silica.

7. A welding fire basin according to claim 5, characterized in that: The modified silica gel powder (7) further comprises 2.00-5.00 parts of cetearyl glucoside.

8. A welding fire basin according to any one of claims 5 to 7, characterized in that: The preparation process of the modified silica gel powder (7) comprises the following steps: firstly, mixing silica gel powder, coffee grounds and acetaminohexanoic acid, then adding tetrabutyl titanate, and continuing to stir at 160-220° C. for 60-240 min, then adding dimethyl silylate and cetearyl glucoside, and continuing to stir at 80-120° C. for 30-60 min, cooling to room temperature, and then post-treating to obtain the modified silica gel powder (7).

9. A welding fire basin according to claim 8, characterized in that: The preparation process of the modified silica gel powder (7) includes grinding the silica gel powder in advance and controlling the particle size of the silica gel powder to be in the range of 40-45 μm.

10. A welding fire basin according to claim 8, characterized in that: The preparation process of the modified silica gel powder (7) includes grinding coffee grounds in advance and controlling the particle size of the coffee grounds to be in the range of 20-30 μm.

Images