Three-eccentric center butterfly valve seat surfacing welding machine

Abstract

The utility model relates to the technical field of surfacing welding machines, and particularly discloses a three-eccentric center butterfly valve seat surfacing welding machine which comprises a machining table, a powder adding device is arranged on one side of the bottom of the machining table, a supporting seat is fixedly connected to the table top of the machining table, an electric sliding block is fixedly connected to the supporting seat, a welding arm is fixedly connected to the electric sliding block, and a connecting pipe is connected to the tail end of the welding arm. A clamping piece is fixedly connected to the portion, on the left side of the welding arm, of the machining table, a transmission mechanism is arranged on one side of the clamping piece, a control panel is arranged on the table top, and the clamping piece comprises a fixing frame. The welding arm is driven by the electric sliding block to perform accurate transverse swing, so that the welding arm can perform operation along a preset path, the welding arm is matched with the clamping piece to enable a valve seat workpiece to stably rotate, it is ensured that the welding head can uniformly perform surfacing on an inner ring of a valve seat, and the inner ring of the valve seat can be more accurately welded.

Description

TECHNICAL FIELD

[0001] The utility model relates to surfacing machine technical field, concretely is a kind of three eccentric butterfly valve seat surfacing machine. BACKGROUND

[0002] Three eccentric butterfly valve is widely used in the pipeline control system of petroleum, chemical industry, pharmacy, food processing, water treatment and other industries, is a kind of efficient, reliable valve type, because butterfly valve is frequently contacted and rubbed in switching process, valve seat and valve plate, due to the nature of work, butterfly valve often contacts corrosive substance, in order to prolong service life, usually valve seat is carried out surfacing, usually using chuck and the like fixing device is fixed with valve seat workpiece, in order to carry out welding, however, chuck is fixed in inner ring surfacing, often it occupies a lot of middle space, limit the movement range of welding arm, especially when carrying out inner ring welding, welding head can not effectively cover the entire inner ring area, lead to welding quality being difficult to guarantee, for this purpose, we propose a kind of three eccentric butterfly valve seat surfacing machine. SUMMARY

[0003] The utility model is to provide a kind of three eccentric butterfly valve seat surfacing machine, to solve the problem raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of three eccentric butterfly valve seat surfacing machine, including processing table, the bottom side of processing table is equipped with powder feeder, processing table top is fixedly connected with support seat, support seat is fixedly connected with electric slide, electric slide is fixedly connected with welding arm, welding arm terminal is connected with connecting pipe, connecting pipe other end is connected to powder feeder, clamping piece is fixedly connected on the left side of welding arm of processing table, one side of clamping piece is equipped with transmission mechanism, processing table top is equipped with control panel;

[0005] Clamping piece includes fixed frame, fixed frame is two-thirds circular ring, movable arm is rotatably connected on the top of fixed frame, three rollers are rotatably connected on the surface of fixed frame.

[0006] Among them, welding arm includes support arm, support arm is fixedly connected with electric slide, support arm is fixedly connected with welding head, and welding head and support arm are perpendicular.

[0007] Among them, transmission mechanism includes servo motor, servo motor is rotatably connected with belt pulley, and belt is equipped between belt pulley and roller.

[0008] Among them, the side of fixed frame is equipped with belt guide, and belt is connected with belt pulley and roller through belt guide.

[0009] Among them, butterfly nut is equipped between fixed frame and movable arm.

[0010] The roller is triangularly connected to the end of the fixed frame, the middle part and the end of the movable arm.

[0011] The roller is triangularly connected to the end of the fixed frame, the middle part and the end of the movable arm.

[0012] The utility model has at least the following beneficial effects:

[0013] The utility model discloses a welding device for valve seat workpiece, which comprises a processing table, a powder adding device, a supporting seat, an electric sliding block, a welding arm, a connecting pipe and a clamping piece. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the clamping piece of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the clamping piece of the utility model;

[0017] Figure 4 It is an enlarged schematic diagram of the structure A of the utility model;

[0018] In the figure: 1, processing table; 2, powder adding device; 3, supporting seat; 4, electric sliding block; 5, welding arm; 51, supporting arm; 52, welding head; 6, connecting pipe; 7, clamping piece; 71, fixed frame; 711, belt guide; 72, movable arm; 721, butterfly nut; 73, roller; 731, side plate; 8, transmission mechanism; 81, servo motor; 82, belt pulley; 83, belt; 9, control panel; 10, valve seat workpiece. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Embodiment one

[0021] Please refer to Figures 1 to 4The utility model provides a kind of three eccentric butterfly valve seat surfacing welding machine, including processing table 1, the bottom side of processing table 1 is equipped with powder feeder 2, processing table 1 table top is fixedly connected with support seat 3, support seat 3 is fixedly connected with electric slide 4, electric slide 4 is fixedly connected with welding arm 5, welding arm 5 terminal end is connected with connecting pipe 6, connecting pipe 6 other end is connected to powder feeder 2, processing table 1 is fixedly connected with chucking piece 7 in welding arm 5 left side, chucking piece 7 side is equipped with transmission mechanism 8, processing table 1 table top is equipped with control panel 9, powder feeder 2 is used to supply welding powder to welding head 52 in welding process, welding powder is specifically stellite no.

[0022] Chuck 7 includes fixed frame 71, fixed frame 71 is two-thirds annular, movable arm 72 is rotatably connected above fixed frame 71, butterfly nut 721 is arranged between fixed frame 71 and movable arm 72, three rollers 73 are rotatably connected to the surface of fixed frame 71, movable arm 72 and the end of fixed frame 71, middle and end of movable arm 72, transmission mechanism 8 includes servo motor 81, servo motor 81 is rotatably connected with pulley 82, pulley 82 and roller 73 are provided with belt 83, one side of fixed frame 71 is provided with belt guide 711, belt 83 passes through belt guide 711 to connect pulley 82 and roller 73, butterfly nut 721 can lock or release movable arm 72, after valve seat workpiece 10 is placed in chucking piece 7, movable arm 72 is locked to complete clamping, servo motor 81 drives pulley 82 and belt 83 to make roller 73 of chucking piece 7 drive valve seat workpiece 10 to rotate stably in chucking piece 7.

[0023] Welding arm 5 includes support arm 51, support arm 51 is fixedly connected with electric slide 4, support arm 51 is fixedly connected with welding head 52, welding head 52 and support arm 51 are perpendicular, in use, electric slide 4 is connected and drives welding arm 5, makes welding arm 5 swing in processing table 1, provides linear motion for welding arm 5, after setting current parameter, swing parameter and speed by control panel 9, welding head 5 swings left and right and cooperates with chucking piece 7 to drive valve seat workpiece 10 to rotate to complete the surfacing welding work of inner ring.

[0024] The working principle of the utility model is: firstly, open the movable arm 72 to clamp and fix the valve seat workpiece 10, then add cobalt base alloy powder of Stellite No. 6 into the powder adding device, set current parameters, swing parameters and speed through the control panel 9, the clamping piece 7 is annular structure and does not occupy the middle space, so that the welding arm 5 can carry out surfacing on the inner ring of the valve seat workpiece 10, avoid the space limitation problem caused by chuck fixing, the welding head 5 enters the inside of the valve seat workpiece 10 and swings left and right and cooperates with the clamping piece 7 to drive the valve seat workpiece 10 to rotate, so as to complete the surfacing work on the inner ring, form a layer of hard alloy layer with excellent wear resistance, corrosion resistance and high temperature resistance on the inner ring surface of the valve seat workpiece 10, so as to significantly improve the sealing performance and service life of the butterfly valve.

[0025] Embodiment two

[0026] Please refer to Figure 4 In the embodiment two, other structures are unchanged, and different from the embodiment one is that the two sides of the roller 73 are fixedly connected with the side plate 731, the fixed side plate 731 can provide certain axial limiting effect for the valve seat workpiece 10, so that the clamping is more stable.

[0027] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations have any such actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A triple eccentric butterfly valve seat overlay welding machine, comprising a processing table (1), characterized in that: The processing table (1) has a powder feeder (2) on one side of its bottom. The processing table (1) has a support base (3) fixedly connected to its surface. The support base (3) has an electric slider (4) fixedly connected to its surface. The electric slider (4) has a welding arm (5) fixedly connected to its surface. The welding arm (5) has a connecting pipe (6) connected to its end. The other end of the connecting pipe (6) is connected to the powder feeder (2). The processing table (1) has a clamping component (7) fixedly connected to the left side of the welding arm (5). The clamping component (7) has a transmission mechanism (8) on one side. The processing table (1) has a control panel (9) on its surface. The clamping member (7) includes a fixed frame (71), which is two-thirds of a ring shape. A movable arm (72) is rotatably connected above the fixed frame (71), and three rollers (73) are rotatably connected to the surface of the fixed frame (71).

2. The triple eccentric butterfly valve seat surfacing machine according to claim 1, characterized in that: The welding arm (5) includes a support arm (51), which is fixedly connected to an electric slider (4). A welding head (52) is fixedly connected to the support arm (51), and the welding head (52) is perpendicular to the support arm (51).

3. The triple eccentric butterfly valve seat surfacing machine according to claim 1, characterized in that: The transmission mechanism (8) includes a servo motor (81), which is rotatably connected to a pulley (82), and a belt (83) is provided between the pulley (82) and the roller (73).

4. A triple eccentric butterfly valve seat surfacing machine according to claim 3, characterized in that: The fixing frame (71) is provided with a belt guide (711) on one side, and the belt (83) is connected to the pulley (82) and the roller (73) through the belt guide (711).

5. A triple eccentric butterfly valve seat surfacing machine according to claim 1, characterized in that: A wing nut (721) is provided between the fixed frame (71) and the movable arm (72).

6. A triple eccentric butterfly valve seat surfacing machine according to claim 1, characterized in that: The rollers (73) are triangular in shape and are rotatably connected to the end, middle and end of the fixed frame (71) and the movable arm (72).

7. A triple eccentric butterfly valve seat surfacing machine according to claim 1, characterized in that: Side plates (731) are fixedly connected to both sides of the roller (73).

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