Welding fixture for air distribution plate of roasting furnace

Abstract

The utility model discloses a roasting furnace air distribution plate welding clamp, the clamp comprises a horizontal support and a pressing structure, the horizontal support comprises a shell, a supporting block and a driving mechanism, the supporting block is in sliding fit along the height direction of the shell, and the driving mechanism is connected to the supporting block and used for driving the supporting block to slide along the height direction of the shell. Guide grooves are formed in the front face and the rear face of the shell in the height direction, and guide blocks matched with the guide grooves are arranged at the positions, corresponding to the guide grooves, of the supporting blocks in an outward protruding mode. The pressing structure comprises a sleeve installed on the side portion of the shell, and a detachable weight is inserted into the sleeve. The air distribution plate machining tool mainly solves the technical problems that in the prior art, in the air distribution plate machining process, efficiency is low, the percent of pass is low, and welding deformation is large, and has good practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to a welding jig for an air distribution plate of a roasting furnace. Background Technique

[0002] The air distribution plate is an important part of the fluidized roasting furnace, which is welded by a distribution plate and tuyeres. It is mainly used to be installed on the top of the fluidized furnace bed to evenly distribute air into the furnace chamber of the fluidized roasting furnace, so as to realize the uniform regulation of the temperature, humidity and air quality in the furnace chamber. Therefore, after the air distribution plate is processed, it is necessary to ensure the perpendicularity of the tuyeres and the horizontal longitudinal and transverse spacing, and also control the upper ports of the tuyeres to be in the same plane.

[0003] There are a large number of air distribution plates in the fluidized roasting furnace, and there are hundreds of tuyeres on each group of air distribution plates, and they are welded by two different materials, so the construction difficulty is great.

[0004] In the existing technology, the processing method of the air distribution plate depends on the operation experience of the welding workers, and relies on the backing iron for simple support welding, with large dimensional errors, large welding deformation, low production efficiency and high rework rate.

[0005] Therefore, it is necessary to provide an improved welding method for the air distribution plate. Content of the Utility Model

[0006] Aiming at the problems existing in the above background technique, the purpose of the utility model is to disclose a welding jig for an air distribution plate of a roasting furnace to improve the welding quality and efficiency of the air distribution plate.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A welding jig for an air distribution plate of a roasting furnace, the jig includes a horizontal support and a pressing structure. The horizontal support includes a housing, a support block and a driving mechanism. The support block is slidably matched along the height direction of the housing, and a driving mechanism is connected to the support block for driving the support block to slide along the height direction of the housing. Guide grooves are opened along the height direction on the front and back surfaces of the housing, and the support block is provided with guide blocks protruding outward corresponding to the guide grooves and adapted to the guide grooves; the driving mechanism is a lead screw, the lead screw is vertically arranged along the height direction of the housing, the lead screw is threadedly connected to the support block, and is rotatably connected to the top and bottom of the housing, and the top of the lead screw extends out of the housing; the pressing structure includes a sleeve installed on the side of the housing, and a detachable backing iron is inserted into the sleeve.

[0009] The height of the sleeve is the same as the height of the housing, and a sliding groove for the backing iron to slide up and down is vertically opened on the sleeve. A screw rod is rotatably connected to the backing iron, and the top of the screw rod extends out of the sleeve and is threadedly connected to the sleeve.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] By using the welding fixture for the air distribution plate of the fluidized bed roaster provided in this application, the assembly error can be reduced during the processing of the air distribution plate, the assembly accuracy of components can be guaranteed, and the human influencing factors can be reduced. In addition, during the welding process, the pressing structure always controls the distribution plate on the support fixture until the welding is naturally cooled and completed. The air distribution plate can be removed from the support fixture only after its structure is stable, which ensures the dimensional stability during the welding deformation process, and thus improves the production qualification rate of the air distribution plate. Description of the Drawings

[0012] Figure 1 It is the first structural schematic diagram of the welding fixture of the utility model.

[0013] Figure 2 It is the second structural schematic diagram of the welding fixture of the utility model.

[0014] Figure 3 It is the schematic diagram of completing step three in the processing method of the air distribution plate of the utility model.

[0015] Figure 4 It is the schematic diagram of completing step four in the processing method of the air distribution plate of the utility model.

[0016] Figure 5 It is the schematic diagram of completing step five in the processing method of the air distribution plate of the utility model.

[0017] Figure 6 It is the schematic diagram of completing step six in the processing method of the air distribution plate of the utility model.

[0018] In the figure: 1. Air distribution plate; 101. Distribution plate; 102. Wind cap; 2. Wind cap position control plate; 3. Welding fixture; 301. Horizontal support; 3011. Housing, 3012. Support block; 3013. Driving mechanism; 3014. Guide groove; 302. Pressing structure; 3021. Sleeve; 3022. Iron weight; 3023. Chute; 3024 - Screw; 4. Mounting hole; 5. Control hole. Detailed Embodiments

[0019] The following further explains and illustrates the utility model with reference to the drawings.

[0020] As Figure 1As shown in the figure, a welding fixture for the air distribution plate of a roasting furnace. The welding fixture 3 includes a horizontal support 301 and a pressing structure 302. The horizontal support 301 includes a housing 3011, a support block 3012 and a driving mechanism 3013. The support block 3012 is slidably engaged along the height direction of the housing 3011, and a driving mechanism 3013 is connected to the support block 3012 for driving the support block 3012 to slide along the height direction of the housing 3011. Guide grooves 3014 are formed along the height direction on the front and back surfaces of the housing 3011. Corresponding to the guide grooves 3014, the support block 3012 protrudes outwardly with guide blocks adapted to the guide grooves 3014. The driving mechanism 3013 is a lead screw, which is vertically arranged along the height direction of the housing 3011. The lead screw is threadedly connected to the support block 3012 and is rotatably connected to the top and bottom of the housing 3011 through bearings. The top of the lead screw extends out of the housing 3011. The pressing structure 302 includes a sleeve 3021 installed on the side of the housing 3011, and an iron block 3022 is inserted into the sleeve 3021.

[0021] In the above fixture structure, the position of the sleeve 3021 is determined according to the height of the air cap to be welded, and the position is fixed, and only the welding operation of the air distribution plate of the same specification can be carried out.

[0022] To improve the applicability of the welding fixture, as Figure 2 shown, the sleeve 3021 is detachable at the top, and the height of the sleeve 3021 is the same as the height of the housing 3011. A chute 3023 for the iron block 3022 to slide up and down is vertically formed on the sleeve 3021. A screw rod 3024 is rotatably connected to the iron block 3022. The top of the screw rod 3024 extends out of the sleeve 3021 and is threadedly connected to the sleeve 3021. It should be noted that the iron block 3022 and the screw rod 3024 are rotatably connected through bearings or a pin shaft is fixed at the end of the screw rod 3024 for clearance fit connection with the iron block 3022.

[0023] As Figure 2 shown in the structure, by rotating the screw rod 3024, the iron block 3022 can be driven to slide up and down in the chute 3023. The application of this welding fixture is no longer limited by the height of the air cap, and the welding operation of air distribution plates of different specifications can be carried out. However, it should be noted that if the fixture shown in the Figure 2 structure is adopted, it should be ensured that there is no fixture on one side of the distribution plate (i.e., three-sided clamping) to facilitate the insertion of the plate for welding.

[0024] As Figures 3 - 6 shown, when using the welding fixture of the present invention to carry out the welding operation of the air distribution plate, the specific steps are as follows:

[0025] Step 1: According to the design dimensions of the distribution plate 101 and the air cap 102, process the distribution plate 101 and the air cap 102.

[0026] Among them, the air distribution plate 101 is made of steel plate. Mounting holes 4 are arranged in a matrix form on the steel plate for connecting with the wind caps 102. The blanking process is completed by a numerical control machine tool to ensure the machining accuracy of the parts. After blanking, the steel plate needs to be leveled to ensure the subsequent assembly accuracy. The wind caps 102 are made of heat-resistant cast steel, and the outer diameter is slightly smaller than the mounting holes 4 so that the wind caps 102 can pass through the mounting holes 4.

[0027] Step 2: According to the outer contour of the air distribution plate 101 and the distribution characteristics of the wind caps 102 in the design drawing, fabricate the wind cap position control plate 2;

[0028] Among them, the wind cap position control plate 2 is made of steel plate. The thickness of this steel plate is greater than the thickness of the air distribution plate. Control holes 5 are opened on the steel plate and arranged in a matrix form for controlling the positions of the said wind caps. The blanking process is completed by a numerical control machine tool to ensure the machining accuracy of the parts. After blanking, the steel plate needs to be leveled to ensure the subsequent assembly accuracy.

[0029] Step 3: Install the wind cap position control plate 2 on the processing platform;

[0030] Among them, during the installation of the wind cap position control plate 2, a level is used for measurement to ensure the levelness of the wind cap position control plate 2.

[0031] Step 4: Evenly spot-weld and fix a plurality of welding jigs 3 around the wind cap position control plate 2.

[0032] Step 5: Place the air distribution plate 101 on the guiding blocks, and then evenly rotate the driving mechanisms 3013 on each welding jig 3 to lift the air distribution plate 101. After lifting to the set height, use a level to measure the levelness of the air distribution plate 101 to ensure that the air distribution plate 101 is level; after it is level, insert the iron weights 3022 or rotate the screw 3024 to drive the iron weights 3022 to press down on the air distribution plate 101. After pressing, measure the levelness again to ensure that the position of the air distribution plate 101 is level.

[0033] Step 6: Install the wind caps 102 at the corresponding positions of the air distribution plate 101 and the wind cap position control plate 2, and then weld the air distribution plate 101 and the wind caps 102 and let them cool naturally.

[0034] Step 7: After the air distribution plate 1 cools stably naturally, open the pressing structure 302 and remove the air distribution plate 1 from the welding jig 3.

[0035] In summary, the processing method of the air distribution plate of the fluidized roasting furnace provided by the present application can improve the processing accuracy when processing the distribution plate, reduce the assembly error when assembling the air distribution plate, and ensure the assembly accuracy of the components; in addition, during the welding process, the distribution plate is always fixed on the support fixture until the welding is naturally cooled and completed, and the air distribution plate can be removed from the support fixture only after the structure is stable, which ensures the dimensional stability during the welding deformation process, and thus improves the production qualification rate of the air distribution plate.

Claims

1. A welding fixture for an air distribution plate of a roasting furnace, characterized in that: The clamp comprises a horizontal support (301) and a clamping structure (302); the horizontal support (301) comprises a shell (3011), a support block (3012) and a driving mechanism (3013); the support block (3012) is slidably matched along the height direction of the shell (3011); the support block (3012) is connected to the driving mechanism (3013) for driving the support block (3012) to slide along the height direction of the shell (3011); the shell (3011) has guide grooves (3014) formed on the front and rear surfaces along the height direction; the support block (3012) is provided with a guide block matching the guide groove (3014) protruding outward at a position corresponding to the guide groove (3014); the clamping structure (302) comprises a sleeve (3021) mounted on the side of the shell (3011); a pressure iron (3022) is inserted into the sleeve (3021).

2. A welding fixture for an air distribution plate of a roasting furnace as claimed in claim 1, characterized in that: The driving mechanism (3013) is a screw rod, which is vertically arranged along the height direction of the housing (3011), is threadedly connected to the support block (3012), and is rotatably connected to the top and bottom of the housing (3011), and the top of the screw rod extends out of the housing (3011).

3. A welding fixture for an air distribution plate of a roasting furnace as claimed in claim 1, characterized in that: The height of the sleeve (3021) is consistent with that of the housing (3011), and a slide groove (3023) is vertically provided on the sleeve (3021) for the weight (3022) to slide up and down. A screw rod (3024) is rotatably connected to the weight (3022), and the top of the screw rod (3024) extends out of the sleeve (3021) and is threadedly connected to the sleeve (3021).

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