Machining and welding method for stainless steel air blower

Abstract

The invention relates to the technical field of air blower welding machining, in particular to a machining and welding method for a stainless steel air blower. The machining and welding method comprises the following machining and welding steps that S1, vertical reinforcing ribs are welded; s2, the air inlet plate and the air outlet plate are welded; s3, welding a shell flange; s4, the air inlet pipeline and the air inlet flange are welded, and the air outlet pipeline and the air outlet flange are welded; s5, transverse reinforcing ribs are welded; and S6, the supporting legs and the wallboards are welded. The manufacturing period of the whole stainless steel blower can be shortened, after parts, making contact with media, of the whole blower are welded, the pressure maintaining success rate of the blower can be greatly increased, material waste caused by unsuccessful pressure maintaining after all the parts are machined is avoided, and the manufacturing success rate of the stainless steel blower is increased.

Description

Technical Field

[0001] The invention relates to the technical field of blower welding processing, in particular to a processing and welding method for a stainless steel blower. Background Art

[0002] Blowers can be divided into centrifugal, Roots and axial flow types according to their working principles. Their casing structures vary significantly with type: the centrifugal casing is a spiral volute used to guide high-speed airflow; the axial flow casing is a cylindrical flow channel; the Roots blower consists of two "8"-shaped rotors, synchronous gears, a casing and a sealing assembly. The rotors achieve gas transportation through meshing rotation. It is mainly used in the transportation of particulate materials and negative pressure suction in pneumatic conveying systems, aeration and oxygenation in sewage treatment and environmental protection projects, and oxygenation systems in aquaculture and agriculture.

[0003] Casting is the mainstream processing technology for Roots blower housings. It achieves integrated molding through sand molds or metal molds, which can reduce welding joints and adapt to multi-curved cavities. However, due to the irregular shape of flow-through parts and the high shrinkage rate of stainless steel, the quality of castings is difficult to control. During the casting process, defects such as pores, shrinkage holes and cracks may occur, and the cost is relatively high. Summary of the invention

[0004] In order to avoid defects that may occur when machining a stainless steel blower housing by casting and to improve the production efficiency and finished product qualification rate of welding manufacturing, the present invention provides a machining and welding method for a stainless steel blower.

[0005] The present invention provides a method for processing and welding a stainless steel blower using the following technical solutions: A processing and welding method for a stainless steel blower includes the following processing and welding steps: S1, welding vertical reinforcement; S2. Welding the air inlet plate and the air outlet plate; S3, welding casing flange; S4. Welding the air inlet pipe and the air inlet flange and the air outlet pipe and the air outlet flange; S5, welding transverse reinforcement; S6. Weld the legs and wall panels.

[0006] Through S1 and S5 welding of vertical and horizontal reinforcement ribs, the overall strength and rigidity of the shell are effectively enhanced, and deformation or damage caused by vibration during operation is reduced. Steps S2 and S4 ensure the precise docking of the air inlet plate, air outlet plate and related pipe flanges, which helps to improve air tightness, reduce gas leakage and improve work efficiency. S3 welding of the casing flange provides a reliable connection interface, enhances the connection stability with external pipes or equipment, and allows flexible assembly design. S6 welding of legs and wall panels provides additional support structure to ensure the stability of the blower during installation and operation, and reduce tilting or displacement caused by external impact or uneven load. The welding process designed for the characteristics of stainless steel materials helps to reduce the corrosion risk of the welding heat affected zone, maintain the corrosion resistance and strength of the material, and extend the service life. By standardizing the welding steps, rework and adjustment time can be reduced, production efficiency can be improved, and the consistency and quality of mass production can be guaranteed.

[0007] Further, in step S1, the vertical reinforcement rib is an arc-shaped reinforcement rib and is attached to the outer arc surface of the stainless steel blower housing. The specific welding steps include: S1.1. Mark the welding positions of the vertical reinforcement ribs at intervals on the outer ring of the stainless steel round tube; S1.2. Put the annular steel hoop on the outside of the stainless steel round tube and position it at the marked position; S1.3. Measure the spacing between the annular steel hoops and weld the annular steel hoops that meet the requirements onto the stainless steel round tubes; S1.4. Cut the stainless steel round tube with the annular steel hoop welded into two halves from the vertical center plane. The two semicircular tubes formed by cutting the stainless steel round tube serve as the stainless steel blower casing, and the two semicircular arcs formed by cutting the annular steel hoop serve as vertical reinforcement ribs.

[0008] The arc-shaped reinforcement rib design adopted in S1 can better distribute the force borne by the shell, reduce stress concentration, and enhance the overall rigidity and deformation resistance of the shell. The arc-shaped structure can withstand internal and external pressures more effectively than straight reinforcement ribs, thereby improving the durability and stability of the blower. Steps S1.1 and S1.2 ensure the accurate welding position of the vertical reinforcement ribs through precise spacing markings and annular steel hoop positioning, avoid uneven stress caused by position deviation, and ensure the accuracy of the welding process. This makes all parts of the blower shell evenly stressed, thereby improving the stability and reliability of the overall structure. In step S1.3, the welding of the annular steel hoop strengthens the connection between the shell and the reinforcement ribs. Firmness ensures that under high-pressure airflow or long-term operation, the joints are not prone to loosening or cracking, thereby effectively improving the safety and long-term stable operation capability of the equipment. Step S1.4 not only completes the manufacture of the stainless steel blower casing by cutting the welded annular steel hoop casing into two halves, but also improves material utilization and reduces waste through reasonable cutting and reuse of materials. This cutting method is also convenient for subsequent assembly and debugging, and improves production efficiency. Fine operation during the welding process helps to reduce the corrosion risk of the heat-affected zone and maintain the corrosion resistance of stainless steel, especially when used in humid or corrosive environments. It is not easily eroded by the external environment and extends the service life of the equipment.

[0009] Furthermore, in step S2, the air inlet plate and the air outlet plate are respectively welded to the upper and lower edges of two semi-circular stainless steel blower casings and the two semi-circular stainless steel blower casings are welded into a whole, the air inlet plate and the air outlet plate protrude 5-6mm compared to the inner cavity surface of the stainless steel blower casing, and reinforcing ribs are welded on the outer surfaces of the air inlet plate and the air outlet plate, and the reinforcing ribs are aligned with the vertical reinforcing ribs and welded.

[0010] By welding reinforcing ribs on the outer surface of the air inlet plate and the air outlet plate and aligning and welding them with the vertical reinforcing ribs, the overall strength and stability of the shell can be significantly improved. The reinforcing ribs provide additional support and reduce the deformation or damage that may occur to the shell during operation. The design of the air inlet plate and the air outlet plate protruding 5-6mm from the inner cavity surface of the shell is conducive to the measurement of the inner hole of the cavity after processing. The welding of the reinforcing ribs not only enhances the rigidity of the plate, but also effectively disperses the stress on the shell, reduces stress concentration, and extends the service life of the equipment.

[0011] Further, in step S3, the casing flange is interference-fitted with the stainless steel blower casing, and the specific steps of welding the casing flange to the stainless steel blower casing include: S3.1. Heat the casing flange, and then put the casing flange on the end face of the stainless steel blower casing; S3.2. Clamp the casing flange and the stainless steel blower casing with the upper and lower pressing plates, measure the parallelism between the casing flange and the end face of the stainless steel blower casing, and adjust the parallelism with the end face of the stainless steel blower casing by tapping the casing flange locally; S3.3. Weld and fix the casing flange and the stainless steel blower casing together.

[0012] Connecting the casing flange to the stainless steel blower casing by interference fit can ensure that the connection between the two is very tight, thereby greatly enhancing the mechanical strength of the connection part. The interference fit makes the connection have strong tensile, compressive and shear resistance, improving the overall structural strength of the equipment. Step S3.2 ensures the precise fit between the casing flange and the end face of the stainless steel blower casing through measurement and parallelism adjustment. By accurately adjusting the parallelism, the problem of uneven joints during welding can be avoided, thereby improving the quality and reliability of welding. Through this optimized welding process, the stability of the equipment during operation is greatly enhanced, reducing failures caused by loose or loose connections, and ensuring the stability and reliability of the blower under long-term operation.

[0013] Furthermore, in step S4, the specific steps of welding the air inlet pipe and the air inlet flange and the air outlet pipe and the air outlet flange include: S4.1. Weld air inlet reinforcement ribs to the outside of the air inlet pipe and the air outlet pipe; S4.2. Set the air inlet plate horizontally upward, align and weld the air inlet pipe to the air inlet plate, and weld the air inlet flange to the end face of the air inlet pipe; S4.3. Set the air outlet plate horizontally upward, align and weld the air outlet pipe to the air outlet plate, and weld the air outlet flange to the end face of the air outlet pipe; S4.4. Weld the air outlet reinforcement ribs to the air inlet plate and the air outlet plate.

[0014] By welding air inlet reinforcement ribs on the outside of the pipeline, the pipeline's resistance to bending and torsion is increased. These reinforcement ribs ensure that the pipeline will not be deformed due to pressure or vibration during operation, thereby improving the overall stability of the equipment. The tight welding between the air inlet and outlet flanges and the pipeline ensures the air tightness of the connection, thereby improving the equipment's working efficiency, reducing gas leakage, and ensuring that the equipment maintains efficient performance during operation. The welding of the reinforcement ribs not only enhances the strength of the pipeline, but also effectively disperses the stress at the connection, reduces stress concentration, and reduces the risk of damage at the weld.

[0015] Further, in step S5, the transverse reinforcing ribs are provided with tips at both sides thereof, and the specific steps of welding the transverse reinforcing ribs include: S5.1. Plane grooves on the vertical reinforcement ribs and the stainless steel blower housing according to the designed installation position of the transverse reinforcement ribs; S5.2. Install the transverse reinforcement ribs in the grooves on the vertical reinforcement ribs and the stainless steel blower housing; S5.3. Weld the transverse reinforcement ribs to the vertical reinforcement ribs and the stainless steel blower casing.

[0016] The transverse reinforcement ribs are combined with the vertical reinforcement ribs and the stainless steel blower casing to effectively enhance the strength and stability of the entire structure. By planing out grooves, the transverse reinforcement ribs can be tightly fitted and fixed, maximizing the welding fusion effect of the structure. The design and welding of the transverse reinforcement ribs can significantly improve the vibration resistance of the stainless steel blower casing. Under high load and long-term operation conditions, the transverse reinforcement ribs can effectively disperse vibrations and avoid structural damage and fatigue caused by vibration, thereby ensuring the long-term stable operation of the equipment under complex working conditions. By embedding the transverse reinforcement ribs in the grooves, the area of ​​the welding joint is increased, avoiding the occurrence of welding misalignment problems, and the welding effect is more solid. The embedded installation method ensures a larger contact area in the joint area, thereby improving the strength and durability of the welding. Due to the pre-planing and embedded installation of the grooves, the welding process becomes simpler and more efficient, reducing the adjustment and correction time, thereby improving production efficiency.

[0017] Furthermore, the legs are welded to both ends of the stainless steel blower housing on one side of the air outlet plate, and the legs welded on both sides are connected by welding through a reinforcement plate. The specific steps of welding the legs include: S6.1.1. Adjust the air outlet plate to face upward and fix the stainless steel blower housing with the fixing fixture and the fixing plate; S6.1.2. Position the outriggers on both sides separately and measure and align them with each other; S6.1.3, weld the fixed legs, and then weld the fixed reinforcement plate; S6.1.4. Remove the stainless steel blower housing from the fixture and mounting plate.

[0018] Through precise positioning and welding, the legs can provide strong support for the stainless steel blower. The use of reinforcement plates further strengthens the connection between the legs, allowing the overall structure to remain stable under high loads. Through precise alignment and welding, the legs can ensure the balance of the equipment during operation, which helps to reduce vibration and noise when the equipment is running at high speed and improve work efficiency. The use of fixed tooling and fixed pressure plates ensures the stability of the welding process and avoids welding errors caused by shaking during the welding process.

[0019] Furthermore, the wall panel includes a casing connecting plate, an oil tank connecting plate, a wall panel reinforcing rib, a bearing seat hole and a sealing hole, and the specific steps of welding the wall panel include: S6.2.1. Fix the fuel tank connection plate by means of a welding bracket, wherein the bottom surface of the fuel tank connection plate is placed on a pad on the welding bracket, and the top edge of the fuel tank connection plate is clamped and fixed by means of a fixing clamp; S6.2.2, Arrange the wall panel reinforcements vertically at intervals and weld them to the tank connection plate; S6.2.3. Align the casing connecting plate with the oil tank connecting plate and place them on the top of the wall plate reinforcement ribs, and then install the shaft in the bearing seat hole of the casing connecting plate and the sealing hole of the oil tank connecting plate; S6.2.4. Weld and fix the casing connection plate and the wall panel reinforcement ribs to each other.

[0020] The welding of the wall panel reinforcement effectively enhances the structural strength of the tank connecting plate. By firmly welding the reinforcement to the tank connecting plate, the rigidity and stability of the entire wall panel are significantly improved. The arrangement and welding of the reinforcement provide additional support for the wall panel, ensuring the stability of the wall panel under high load conditions. The use of tools such as welding brackets and fixing chucks improves the efficiency and quality of the welding process, ensures the stability of the welding process, and reduces welding errors.

[0021] Furthermore, the grooves to be welded all adopt V-shaped grooves, and the welding machine adopts the following parameters: welding current 330A-350A, welding machine voltage 35V-37V, welding wire diameter φ1.2-φ1.6, gas flow 20c / min-25c / min, and welding speed 25m / h-30m / h.

[0022] The V-shaped groove design can provide a larger welding area and good fusion effect. It helps to ensure sufficient penetration and fusion of the weld metal, thereby improving the strength and consistency of the weld. The V-shaped groove can effectively reduce common defects such as porosity and slag inclusions in welding. By providing a uniform groove angle, it improves the fluidity and exhaust performance of the welding pool and reduces the probability of defects. The V-shaped groove is suitable for welding thicker materials and can ensure the depth and strength of the welding to meet the needs of high-strength structural parts.

[0023] Furthermore, after all parts are welded, the whole is tested for air tightness.

[0024] The airtightness test can effectively check whether there are tiny cracks, pores, incomplete penetration or incomplete fusion defects in the weld, ensuring that there will be no gas or liquid leakage in the entire welded structure under actual working conditions, thereby avoiding safety hazards during operation and maintaining air blowing efficiency.

[0025] In summary, the present invention has the following beneficial technical effects: 1. The present invention can shorten the entire manufacturing cycle of the stainless steel blower. After the parts of the entire blower that contact the medium are welded, the pressure-maintaining success rate of the blower can be greatly improved, so that the material will not be wasted due to unsuccessful pressure maintenance after all parts are processed, thereby improving the success rate of stainless steel blower manufacturing.

[0026] 2. Through this improved welding method, combined with precise process steps, it is possible to improve production efficiency, reduce costs and improve product quality and reliability while ensuring product performance. This provides an optimized solution for the production of stainless steel blowers, especially for high-end application fields with high requirements for structural strength, stability and air tightness.

[0027] 3. Through the refinement and optimization of the welding steps, the manufacturing process of the stainless steel blower has been significantly improved. The precise design and welding of the air inlet plate and the air outlet plate not only improves the air tightness and structural strength of the equipment, but also enhances the stability and reliability of the overall operation. These optimization measures ensure the high performance and high reliability of the product in actual use.

[0028] 4. Through precise heating, parallelism adjustment and welding fixation, step S3 provides a reliable and efficient welding solution, which enhances the connection strength and stability between the stainless steel blower casing and the casing flange, and improves the durability, air tightness and appearance quality of the equipment. This process not only reduces the workload of later debugging and maintenance, but also greatly extends the service life of the equipment.

[0029] 5. Through detailed welding steps, especially in the connection between the air inlet duct and the air outlet duct and the flange, the working efficiency, air tightness and structural stability of the equipment are significantly improved.

[0030] 6. Through precise design and welding, the transverse reinforcement rib welding scheme in step S5 significantly improves the structural strength, stability and vibration resistance of the stainless steel blower casing. The embedded installation and welding method not only optimizes the firmness of the welded joint, but also effectively reduces stress concentration and extends the service life of the equipment. This welding process improves production efficiency and product quality, and has an ideal effect for equipment used in high-load and high-vibration environments.

[0031] 7. The welding of the legs and the reinforcement plate in step S6 significantly improves the supporting stability and structural strength of the stainless steel blower. Such a design not only improves the durability and working efficiency of the equipment, but also optimizes the manufacturing process and is suitable for high-load and high-demand industrial applications.

[0032] 8. By adopting V-shaped groove and precise welding parameter settings, the quality and efficiency of welding can be significantly improved. These settings help to ensure the stability of the welding process and the strength of the weld, reduce welding defects, improve production efficiency and product reliability, and are particularly suitable for industrial applications that require high-strength and high-quality welding.

[0033] 9. Air tightness test is a key quality control step after the wall panel structure welding is completed. It not only verifies the reliability of welding seal, but also ensures the safety and stability of the whole machine operation. Through this test, the product quality level can be effectively improved to meet the standard industrial application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the assembly structure of the stainless steel blower of the present invention; Figure 2 This is a schematic diagram of the welding process in step S1 of the present invention; Figure 3 This is a schematic diagram of the cutting process in step S1 of the present invention; Figure 4 This is a schematic diagram of the welding process of steps S2 and S3 of the present invention; Figure 5 This is a schematic diagram of the welding process in step S4 of the present invention; Figure 6 This is a schematic diagram of the welding process in step S5 of the present invention; Figure 7 This is a schematic diagram of the S6 leg welding process of the present invention; Figure 8 This is a schematic diagram of the welding process of the S6 housing connection plate of the present invention; Fig. 9 This is a schematic diagram of the welding process of the S6 wall panel reinforcement ribs of the present invention; Fig.10 This is a schematic diagram of the welding process of the S6 fuel tank connecting plate of the present invention.

[0035] Description of reference numerals: 10. Stainless steel blower casing, 1. Vertical reinforcement ribs, 2. Air inlet plate, 21. Reinforcement ribs, 3. Air outlet plate, 4. Casing flange, 41. Upper pressure plate, 42. Lower pressure plate, 5. Air inlet duct, 51. Air inlet flange, 56. Air outlet reinforcement ribs, 6. Air outlet duct, 61. Air outlet flange, 7. Horizontal reinforcement ribs, 8. Support legs, 81. Reinforcement plate, 82. Fixed tooling, 83. Fixed pressure plate, 9. Wall panel, 91. Casing connecting plate, 92. Oil tank connecting plate, 93. Wall panel reinforcement ribs, 94. Bearing seat hole, 95. Sealing hole, 96. Welding bracket, 97. Pad, 98. Fixed chuck, 99. Rotating shaft. DETAILED DESCRIPTION

[0036] The following will be combined with the attached Figure 1-Figure 10 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] The present invention discloses a processing and welding method for a stainless steel blower, referring to Figure 1-Figure 10 , including the following processing and welding steps: S1, welded vertical reinforcement 1; S2, welding the air inlet plate 2 and the air outlet plate 3; S3, welding housing flange 4; S4, welding the air inlet pipe 5 and the air inlet flange 51 and the air outlet pipe 6 and the air outlet flange 61; S5, welding transverse reinforcement rib 7; S6. Weld the legs 8 and the wall panels 9.

[0039] Before welding, the material should be cleaned and polished to remove surface impurities and maintain surface smoothness and precision.

[0040] The welding positions of the welded parts are chamfered to form a V-shaped welding groove.

[0041] Debug the equipment system before welding, including: The welding power system is calibrated using a digital welding tester, with an output voltage error of ≤±1.5% and a current ripple factor of ≤5%; Wire feeding system debugging, dynamic wire feeding accuracy test, speed fluctuation rate ≤±2%, stall torque ≥5N·m, contact nozzle matching inspection, aperture tolerance is wire diameter + 0.1mm; Protective gas system debugging, ratio accuracy verification, Ar / CO 2 Mixing ratio error ≤ ±0.5%, flow meter calibration, at 10L / min range point, indication error ≤ ±1.5%FS; Auxiliary equipment joint debugging, laser tracking system, contour tracking accuracy ≤±0.05mm, temperature monitoring module, infrared thermometer range 400-1200℃, accuracy ±1%.

[0042] Reference Figure 1 and Figure 2 In step S1, the vertical reinforcement rib 1 is an arc-shaped reinforcement rib and is attached to the outer arc surface of the stainless steel blower housing 10. The specific welding steps include: S1.1. Mark the welding positions of the vertical reinforcement ribs 1 on the outer ring of the stainless steel round tube; S1.2. Put the annular steel hoop on the outside of the stainless steel round tube and position it at the marked position; S1.3. Measure the spacing between the annular steel hoops and weld the annular steel hoops that meet the requirements onto the stainless steel round tubes; S1.4. Cut the stainless steel round tube with the annular steel hoop welded thereto into two halves from the vertical center plane. The two semicircular tubes formed by cutting the stainless steel round tube serve as the stainless steel blower housing 10, and the two semicircular arcs formed by cutting the annular steel hoop serve as the vertical reinforcing ribs 1.

[0043] Reference Figure 4 In step S2, the air inlet plate 2 and the air outlet plate 3 are respectively welded to the upper and lower edges of two semi-circular tube-shaped stainless steel blower housings 10 and the two semi-circular tube-shaped stainless steel blower housings 10 are welded into a whole; The air inlet plate 2 and the air outlet plate 3 protrude 5-6 mm compared to the inner surface of the stainless steel blower housing 10 , and reinforcement ribs 21 are welded on the outer surfaces of the air inlet plate 2 and the air outlet plate 3 , and the reinforcement ribs 21 are aligned with and welded to the vertical reinforcement ribs 1 .

[0044] Reference Figure 4 In step S3, the casing flange 4 is interference-fitted with the stainless steel blower casing 10, and the specific steps of welding the casing flange 4 to the stainless steel blower casing 10 include: S3.1, heat the casing flange 4, and then put the casing flange 4 on the end surface of the stainless steel blower casing 10; S3.2. Clamp and fix the casing flange 4 and the stainless steel blower casing 10 by using the upper pressing plate 41 and the lower pressing plate 42, measure the parallelism of the casing flange 4 and the end face of the stainless steel blower casing 10, and adjust the parallelism with the end face of the stainless steel blower casing 10 by tapping the casing flange 4 locally; S3.3, the casing flange 4 and the stainless steel blower casing 10 are welded and fixed to each other.

[0045] Reference Figure 5 In step S4, the specific steps of welding the air inlet pipe 5 and the air inlet flange 51 and the air outlet pipe 6 and the air outlet flange 61 include: S4.1. Weld the air inlet duct 5 and the air outlet duct 6 to the outside of the air inlet duct 5 and the air outlet duct 6; S4.2. Set the air inlet plate 2 horizontally upward, align and weld the air inlet pipe 5 to the air inlet plate 2, and weld the air inlet flange 51 to the end face of the air inlet pipe 5; S4.3. Set the air outlet plate 3 horizontally upward, align and weld the air outlet pipe 6 to the air outlet plate 3, and weld the air outlet flange 61 to the end face of the air outlet pipe 6; S4.4, welding the air outlet reinforcement rib 56 to the air inlet plate 2 and the air outlet plate 3.

[0046] Reference Figure 6 In step S5, the transverse reinforcing ribs 7 are provided with tips on both sides, and the specific steps of welding the transverse reinforcing ribs 7 include: S5.1. Plane grooves on the vertical reinforcement ribs 1 and the stainless steel blower housing 10 according to the designed installation position of the transverse reinforcement ribs 7; S5.2. Install the transverse reinforcement rib 7 in the grooves on the vertical reinforcement rib 1 and the stainless steel blower housing 10; S5.3. Weld and fix the transverse reinforcement rib 7 to the vertical reinforcement rib 1 and the stainless steel blower housing 10.

[0047] Reference Figure 7 The legs 8 are welded to the two ends of the stainless steel blower housing 10 on one side of the air outlet plate 3, and the legs 8 welded on both sides are welded and connected by a reinforcing plate 81. The specific steps of welding the legs 8 include: S6.1.1. Adjust the air outlet plate 3 to face upward and fix the stainless steel blower housing 10 by means of the fixing fixture 82 and the fixing pressure plate 83; S6.1.2. Position the legs 8 on both sides respectively and measure and align them with each other; S6.1.3, welding and fixing the supporting legs 8, and then welding and fixing the reinforcing plate 81; S6.1.4. Remove the stainless steel blower housing 10 from the fixing fixture 82 and the fixing pressure plate 83.

[0048] Reference Figure 8-Figure 10 The wall panel 9 includes a casing connecting plate 91, an oil tank connecting plate 92, a wall panel reinforcing rib 93, a bearing seat hole 94 and a sealing hole 95. The specific steps of welding the wall panel 9 include: S6.2.1. Clamp and fix the fuel tank connecting plate 92 by means of the welding bracket 96, wherein the bottom surface of the fuel tank connecting plate 92 is placed on the pad 97 on the welding bracket 96, and the top edge of the fuel tank connecting plate 92 is clamped and fixed by means of the fixing clamp 98; S6.2.2, vertically arrange the wall panel reinforcement ribs 93 at intervals and weld them to the oil tank connection plate 92; S6.2.3. Align the casing connecting plate 91 and the oil tank connecting plate 92 and place them on the top of the wall plate reinforcement rib 93, and then install the rotating shaft 99 in the bearing seat hole 94 of the casing connecting plate 91 and the sealing hole 95 of the oil tank connecting plate 92; S6.2.4. Weld and fix the casing connection plate 91 and the wall plate reinforcement rib 93 to each other.

[0049] After all parts are welded, the whole is tested for air tightness.

[0050] Embodiment 1: Incorporating the above technologies and supplementing them with specific processing parameters: Reference Figure 1-Figure 10 The grooves to be welded are all V-shaped grooves, and the welding machine uses the following parameters: Welding current 330A-350A; Welding machine voltage 35V-37V; Wire diameter φ1.2-φ1.6; Gas flow rate 20c / min-25c / min; Welding speed 25m / h-30m / h.

[0051] Embodiment 2: Includes the above technologies and supplements specific processing material requirements: The stainless steel blower housing 10, the air inlet plate 2, the air outlet plate 3, the air inlet duct 5, the air inlet flange 51, the air outlet duct 6 and the air outlet flange 61 are made of stainless steel, and the rest are made of carbon steel.

[0052] Embodiment 3: Includes the above technologies and supplements installation and processing requirements: The contact points between the stainless steel blower housing 10, the housing flange 4 and the wall panel 9 are padded with an O-ring sealing structure.

[0053] Embodiment 4: Includes the above techniques and adds welding materials: E309-16 is used for welding stainless steel and carbon steel; E2209-16 is used for welding between 2205 stainless steel; E308-16 is used for welding between 304 stainless steel; E316-16 is used for welding between 316 stainless steel; E316-16 is used for welding 304 stainless steel and 316 stainless steel; E2209-16 is used for welding 2205 stainless steel and 316 stainless steel.

[0054] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A processing and welding method for a stainless steel blower, characterized in that: The following processing and welding steps are included: S1, welded vertical reinforcement (1); S2, welding the air inlet plate (2) and the air outlet plate (3); S3, welding housing flange (4); S4, welding the air inlet pipe (5) and the air inlet flange (51) and the air outlet pipe (6) and the air outlet flange (61); S5, welding transverse reinforcement ribs (7); S6, welding the legs (8) and the wall panels (9).

2. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: In step S1, the vertical reinforcement rib (1) is an arc-shaped reinforcement rib and is attached to the outer arc-shaped surface of the stainless steel blower housing (10). The specific welding steps include: S1.

1. Mark the welding positions of the vertical reinforcement ribs (1) at intervals on the outer ring of the stainless steel round tube; S1.

2. Put the annular steel hoop on the outside of the stainless steel round tube and position it at the marked position; S1.

3. Measure the spacing between the annular steel hoops and weld the annular steel hoops that meet the requirements onto the stainless steel round tubes; S1.

4. The stainless steel round tube with the annular steel hoop welded thereto is cut into two halves from the vertical center plane. The two semicircular tubes formed by cutting the stainless steel round tube serve as the stainless steel blower housing (10), and the two semicircular arcs formed by cutting the annular steel hoop serve as the vertical reinforcing ribs (1).

3. The method for processing and welding a stainless steel blower according to claim 2, characterized in that: In step S2, the air inlet plate (2) and the air outlet plate (3) are respectively welded to the upper and lower edges of two semi-circular tube-shaped stainless steel blower casings (10), and the two semi-circular tube-shaped stainless steel blower casings (10) are welded into a whole; The air inlet plate (2) and the air outlet plate (3) protrude 5-6 mm compared to the inner surface of the stainless steel blower housing (10); reinforcing ribs (21) are welded to the outer surfaces of the air inlet plate (2) and the air outlet plate (3); and the reinforcing ribs (21) are aligned with and welded to the vertical reinforcing ribs (1).

4. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: In step S3, the casing flange (4) is interference-fitted with the stainless steel blower casing (10), and the specific steps of welding the casing flange (4) to the stainless steel blower casing (10) include: S3.

1. Heat the casing flange (4), and then put the casing flange (4) on the end face of the stainless steel blower casing (10); S3.

2. Clamp and fix the casing flange (4) and the stainless steel blower casing (10) by using the upper pressing plate (41) and the lower pressing plate (42), measure the parallelism between the casing flange (4) and the end surface of the stainless steel blower casing (10), and adjust the parallelism between the casing flange (4) and the end surface of the stainless steel blower casing (10) by tapping the casing flange (4) locally; S3.

3. Weld the casing flange (4) and the stainless steel blower casing (10) together and fix them.

5. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: In step S4, the specific steps of welding the air inlet pipe (5) and the air inlet flange (51) and the air outlet pipe (6) and the air outlet flange (61) include: S4.

1. Welding air inlet reinforcement ribs (56) to the outside of the air inlet pipe (5) and the air outlet pipe (6); S4.

2. The air inlet plate (2) is arranged horizontally and upwardly, the air inlet pipe (5) is aligned and welded to the air inlet plate (2), and the air inlet flange (51) is welded to the end face of the air inlet pipe (5); S4.

3. Arrange the air outlet plate (3) horizontally and upwardly, align and weld the air outlet pipe (6) to the air outlet plate (3), and weld the air outlet flange (61) to the end face of the air outlet pipe (6); S4.

4. Weld the air outlet reinforcement rib (56) to the air inlet plate (2) and the air outlet plate (3).

6. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: In step S5, the transverse reinforcing rib (7) is provided with tips at both sides thereof, and the specific steps of welding the transverse reinforcing rib (7) include: S5.

1. Plane grooves on the vertical reinforcement ribs (1) and the stainless steel blower housing (10) according to the designed installation position of the transverse reinforcement ribs (7); S5.

2. Install the transverse reinforcement rib (7) in the grooves on the vertical reinforcement rib (1) and the stainless steel blower housing (10); S5.

3. Weld and fix the transverse reinforcement ribs (7) to the vertical reinforcement ribs (1) and the stainless steel blower housing (10).

7. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: The legs (8) are welded to the two ends of the stainless steel blower housing (10) on one side of the air outlet plate (3), and the legs (8) welded on both sides are welded and connected via a reinforcing plate (81). The specific steps of welding the legs (8) include: S6.1.

1. Adjust the air outlet plate (3) to face upward and fix the stainless steel blower housing (10) by means of a fixing fixture (82) and a fixing pressure plate (83); S6.1.

2. Position the legs (8) on both sides separately and align them with each other; S6.1.3, weld and fix the legs (8), and then weld and fix the reinforcing plate (81); S6.1.

4. Remove the stainless steel blower housing (10) from the fixing fixture (82) and the fixing pressure plate (83).

8. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: The wall panel (9) comprises a casing connecting plate (91), an oil tank connecting plate (92), a wall panel reinforcing rib (93), a bearing seat hole (94) and a sealing hole (95). The specific steps of welding the wall panel (9) include: S6.2.

1. The fuel tank connecting plate (92) is clamped and fixed by a welding bracket (96), wherein the bottom surface of the fuel tank connecting plate (92) is placed on a cushion block (97) on the welding bracket (96), and the top edge of the fuel tank connecting plate (92) is clamped and fixed by a fixing clamp (98); S6.2.2, vertically arrange the wall panel reinforcement ribs (93) at intervals and weld them to the oil tank connection plate (92); S6.2.

3. Align the casing connecting plate (91) and the oil tank connecting plate (92) and place them on the top of the wall plate reinforcement rib (93). Then install the rotating shaft (99) in the bearing seat hole (94) of the casing connecting plate (91) and in the sealing hole (95) of the oil tank connecting plate (92). S6.2.

4. Weld the casing connection plate (91) and the wall plate reinforcement rib (93) together and fix them.

9. A method for processing and welding a stainless steel blower according to any one of claims 1 to 8, characterized in that: The grooves to be welded are all V-shaped grooves, and the welding machine uses the following parameters: Welding current 330A-350A; Welding machine voltage 35V-37V; Wire diameter φ1.2-φ1.6; Gas flow rate 20c / min-25c / min; Welding speed 25m / h-30m / h.

10. The method for processing and welding a stainless steel blower according to claim 1, characterized in that: After all parts are welded, the whole is tested for air tightness.

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