A machining method of a triple offset butterfly valve

Abstract

The present application relates to eccentric butterfly valve processing technical field, specifically to a kind of three eccentric butterfly valve processing method, the specific of this three eccentric butterfly valve processing method, the butterfly plate blank is placed to machine tool, according to size and is processed appearance, and equidistantly drill multiple threaded holes, the valve body rough blank is processed using numerical control machine tool, boring its internal space, and form annular valve seat in the inside, equidistantly drill multiple threaded holes on valve seat.In the present application, by adjusting the setting of assembly, the sealing ring blank is installed on the inclined table, the cutting head of the drill arm is controlled to move up and down along the right side conical generatrix, the inclined table is rotated while driving the inclined table to move along the inclined shaft, so that the relative downward distance of the sealing ring to the right side edge position is compensated, the position of the right side of the sealing ring is always kept at the same position, the cutting head is always in contact with the processing surface and is processed, the travel process of the cutting head during processing is reduced, the processing efficiency of the inclined conical surface is increased while the cutting of the processing surface is smooth.

Description

TECHNICAL FIELD

[0001] The present application relates to the eccentric butterfly valve processing technical field, specifically to a three eccentric butterfly valve processing method. BACKGROUND

[0002] The structural feature of the three eccentric butterfly valve is that the conical axis of the sealing surface of the butterfly plate is inclined to the cylindrical axis of the body while the shaft center of the double eccentric valve rod is eccentric, that is, after the third eccentricity, the sealing section of the butterfly plate is no longer a true circle, but an ellipse, and the shape of the sealing surface is also asymmetric, one side is inclined to the center line of the body, and the other side is parallel to the center line of the body. The biggest feature of the third eccentricity is to fundamentally change the sealing structure, which is no longer a positional seal, but a torsional seal, that is, instead of relying on the elastic deformation of the valve seat, it completely relies on the contact surface pressure of the valve seat to achieve the sealing effect, thereby realizing zero leakage of the metal valve seat.

[0003] When the inclined conical surface of the butterfly plate sealing ring and the valve seat sealing ring is processed, since the processing surface is in an elliptical state, the sealing ring is generally inclined on the tool, the sealing ring is driven to rotate around the vertical shaft, and the drill bit moves along the conical generatrix, thereby completing the processing of the inclined conical surface. However, since the sealing ring is inclined, when the sealing ring rotates horizontally, the outer wall of the sealing ring rotates one circle, and the drill bit can only contact the side wall of the sealing ring in a part of the fan-shaped range, so that the drill bit intermittently contacts the sealing ring during processing, and the travel distance of the drill bit is relatively long. When the drill bit travels at a certain distance relatively fast, the roughness of the processing surface is generally low, and when the drill bit moves slowly, although the processing surface is relatively smooth, the efficiency is generally low. SUMMARY

[0004] In order to overcome the above technical problems, the purpose of the present application is to provide a three eccentric butterfly valve processing method, by adjusting the setting of the assembly, installing the sealing ring blank on the inclined table, controlling the cutting head of the drill arm to move up and down along the right conical generatrix, and driving the inclined table to move along the inclined shaft rod while rotating, so that the relative downward movement distance of the sealing ring to the right edge position is compensated, so that the position of the right side of the sealing ring always remains the same, facilitating the cutting head to always contact and process the processing surface, reducing the travel process of the cutting head during processing, and increasing the processing efficiency of the inclined conical surface while cutting the processing surface smoothly.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A three eccentric butterfly valve processing method, the specific steps of which are as follows:

[0007] Step 1: Place the butterfly plate blank on the machine tool, process the shape according to the size, and drill a plurality of threaded holes at equal intervals;

[0008] Step two: the valve body roughing machining by numerical control machine tool, boring its internal space, and forming a ring type valve seat in the internal, drilling a plurality of threaded holes on the valve seat equidistantly;

[0009] Step three: drilling the butterfly plate sealing ring threaded holes corresponding to the butterfly plate threaded holes, and drilling the valve seat sealing ring threaded holes corresponding to the valve seat threaded holes, installing the butterfly plate sealing ring or the valve seat sealing ring to the taper face machining device, so that the processing surface of the sealing ring is processed into a tapered surface;

[0010] Step four: installing the butterfly plate to the valve body, installing the butterfly plate sealing ring to the butterfly plate by bolts, installing the valve seat sealing ring to the valve seat, and installing the driving mechanism on the outside of the valve body.

[0011] A three-eccentric butterfly valve machining method, the taper face machining device comprises a support assembly and a driving assembly, a drill arm is installed at the top end of the driving assembly, the support assembly comprises a chassis, a bottom plate is fixedly connected to the top end of the chassis, a slanting shaft rod is fixedly connected to the middle position of the top surface of the bottom plate, a moving piece is slidably connected to the outer side wall of the slanting shaft rod, a transmission shaft is rotatably connected to one end of the moving piece, a slanting table is fixedly sleeved to the top end of the transmission shaft, a driving motor is fixedly installed on one end of the moving piece, and the output end of the driving motor is drivingly connected with the transmission shaft, the driving motor is used to drive the transmission shaft to rotate, an adjusting assembly is fixedly connected to one side wall of the bottom plate, the adjusting assembly comprises a vertical rod, a horizontal movement module is arranged between the bottom end of the vertical rod and the ground, a sleeve is slidably sleeved to the outer side wall of the vertical rod, and a rotating rod is rotatably connected to one side of the outer side wall of the sleeve, the sleeve is used to drive the moving piece to ascend and descend, the cutting head of the drill arm moves up and down along the right conical generatrix, the driving motor drives the transmission shaft to rotate, so that the slanting table rotates, the sealing ring rotates, when the left side edge position of the sealing ring relatively rises, the sleeve moves two units to drive the slanting table to move one unit upward along the slanting shaft rod, so that the relative descending distance of the right side edge position of the sealing ring is compensated, the position of the right side of the sealing ring is always kept at the same position, the cutting head is always in contact with the processing surface and is processed and ground, the advancing process of the cutting head during processing is reduced, the processing surface is smoothly cut, and the processing efficiency of the tapered surface is increased.

[0012] Further be: The top surface of the bottom plate is located in the side position of the fixed rod one, the side wall of the fixed rod one is slidably connected with the gear rod one, the top surface of the bottom plate is located in the side position of the moving piece and is fixedly connected with two fixed rods three, the side of the fixed rod three is slidably connected with the gear rod two, and the side walls of the two gear rods two are fixedly connected with the bracket, the bracket is located below the other end of the moving piece, the gear rod one and the two gear rods two are provided with a transmission module, the sleeve drives the gear rod one to move up and down, the gear rod one drives the bracket to move up and down through the transmission module, and the bracket drives the moving piece to move up and down along the inclined shaft, so that the outer edge position of the sealing ring on the right side remains unchanged when the sealing ring rotates.

[0013] Further be: The outer side wall of the sleeve is fixedly connected with the connecting rod, the bottom end of the connecting rod is fixedly connected with the sliding block, the bottom end of the gear rod one is fixedly connected with the groove rod, and the sliding block and the groove rod are slidably connected with the inner wall, so that the sleeve remains connected with the gear rod one when the vertical rod moves left and right, and the sleeve drives the gear rod one to move up and down.

[0014] Further be: The horizontal moving module comprises a lead screw, the lead screw is embeddedly and fixedly connected with the top surface of the bottom plate, the bottom end of the vertical rod is fixedly connected with a sliding seat, the sliding seat is slidably connected with the inner wall of the horizontal rail, one end of the horizontal rail is rotatably connected with the lead screw, the lead screw is screwedly connected with the sliding seat, and the sliding seat is fixedly connected with the sleeve and is provided with a return spring, the return spring is slidably connected with the vertical rod, the lead screw is rotated, thereby driving the sliding seat and the vertical rod to move, the left and right positions of the vertical rod are adjusted through the horizontal moving module, and thereby the rotating rod is facilitated to contact the outer edge of the sealing ring.

[0015] Further be: The transmission module comprises a fixed rod two, the bottom end of the fixed rod two is fixedly connected with the top surface of the bottom plate, one side of the top end of the fixed rod two is rotatably connected with a shaft one, the other side of the top end of the fixed rod two is rotatably connected with a shaft two, a gear two is fixedly sleeved on the outer side wall of the shaft one at the middle position, a gear one is fixedly sleeved on the other end of the shaft one, a gear three is fixedly sleeved on the outer side wall of the shaft two at positions corresponding to the two gear rods two, the gear three is in meshing connection with the adjacent gear rod two, one gear three is in meshing connection with the gear two, and the gear one is in meshing connection with the gear rod one, when the sleeve moves up, the gear rod one is driven to move up through the connecting rod, the gear rod one drives the gear rod two to move up through the gear one and the two gears three, and thereby the bracket is driven to move up.

[0016] Further be: The outer diameter of the gear one is twice that of the gear two, so that the vertical moving distance of the sleeve is twice that of the inclined table, and the inclined table is facilitated to be driven to move up.

[0017] Further in: the top surface of the inclined table is annularly connected with a plurality of slide rails, the inner wall of the slide rail is slidably connected with a slide rod, one end of the slide rod is provided with a circular hole, the inner wall of the circular hole is provided with a thread groove, the other end of the slide rod is screw-connected with a fastening knob, the top end of the transmission shaft is fixedly connected with a marker rod, and the marker rod is used for marking the center position of the top surface of the inclined table.

[0018] Further in: the bottom of the inclined table is provided with a support ring, a plurality of support modules are equidistantly arranged between the support ring and the bottom plate, and a plurality of rolling balls are embedded in the top surface of the support ring and rotationally connected.

[0019] Further in: the support module comprises a sleeve rod, the inner wall of the sleeve rod is slidably sleeved with a plug rod, a support spring is arranged between the top end of the sleeve rod and the bottom surface of the support ring, the support spring is slidably sleeved with the plug rod, the top end of the plug rod is fixedly connected with the support ring, the support ring and the inclined table are additionally supported by the support spring, the load applied to the return spring by the gravity of the inclined table is reduced, and the inclined table is facilitated to rise.

[0020] The beneficial effects of the present application are:

[0021] 1. By adjusting the setting of the adjusting assembly, the sealing ring blank is installed on the inclined table, the cutting head of the drill arm is controlled to move up and down along the right conical generatrix, a driving motor drives a transmission shaft to rotate, so that the inclined table rotates, and the sealing ring rotates horizontally, when the left side edge position of the sealing ring relatively rises during rotation, the sleeve moves two units to drive the inclined table to move up 1 unit along the inclined shaft, so that the sealing ring compensates for the relative downward movement distance of the right side edge position, so that the position of the right side of the sealing ring is always the same, the cutting head is always in contact with the machining surface and is machined and ground, the travel process of the cutting head during machining is reduced, the machining surface is smoothly cut, and the processing efficiency of the conical surface is increased;

[0022] 2. By arranging the slide rod and the vertical rod, the slide rod is moved to align the circular hole with the threaded hole on the sealing ring, the sealing ring and the fastening knob are fixed by bolts, so that the sealing ring is inclined and fixed on the inclined table, and at this time, the non-machining annular surface of the sealing ring is concentric with the marker rod, the lead screw is rotated, the vertical rod is moved left and right through the slide, the position of the vertical rod and the sleeve is adjusted, so that one end of the outer side wall of the rotating rod is in contact with the lower side edge of the sealing ring, thereby facilitating the machining of sealing rings with different outer diameters. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0025] Figure 2 is the structural schematic diagram of the support assembly and the adjusting assembly in the application;

[0026] Figure 3 is the front view structural schematic diagram of the support assembly in the application;

[0027] Figure 4 is the structural schematic diagram of the inclined table in the application;

[0028] Figure 5 is the structural schematic diagram of the transmission module in the application;

[0029] Figure 6 is the structural schematic diagram of the sleeve in the application;

[0030] Figure 7 is the structural schematic diagram of the support ring in the application;

[0031] Figure 8 is the multi-angle position schematic diagram of the sealing ring.

[0032] In the figure: 100, driving assembly; 110, drill arm; 200, support assembly; 210, chassis; 211, bottom plate; 212, inclined shaft rod; 220, support module; 221, sleeve rod; 222, insertion rod; 223, support spring; 230, support ring; 240, moving piece; 250, transmission shaft; 251, marker rod; 260, driving motor; 270, inclined table; 271, slide rail; 280, slide rod; 281, round hole; 282, fastening knob; 300, adjusting assembly; 310, vertical rod; 311, slide seat; 312, reset spring; 320, horizontal moving module; 321, horizontal rail; 322, lead screw; 330, sleeve; 331, connecting rod; 332, sliding block; 333, rotating rod; 340, toothed rod one; 341, slot rod; 342, fixed rod one; 350, transmission module; 351, fixed rod two; 352, shaft rod one; 353, gear one; 354, gear two; 355, shaft rod two; 356, gear three; 360, fixed rod three; 361, toothed rod two; 370, bracket. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0034] Please refer to Figures 1-8 The specific steps of the three-eccentric butterfly valve machining method are as follows:

[0035] Step one: the butterfly plate embryo is placed on the machine tool, the shape is processed according to the size, and a plurality of threaded holes are drilled at equal intervals;

[0036] Step two: the valve body rough embryo is processed by the numerical control machine tool to bore the internal space and form a ring type valve seat inside, and a plurality of threaded holes are drilled at equal intervals on the valve seat;

[0037] Step three: the butterfly plate sealing ring is drilled with threaded holes corresponding to the threaded holes on the butterfly plate, and the valve seat sealing ring is also drilled with threaded holes corresponding to the threaded holes on the valve seat, the butterfly plate sealing ring or the valve seat sealing ring is installed on the taper face processing device, so that the processing surface of the sealing ring is processed into a tapered surface;

[0038] Step four: the butterfly plate is installed on the valve body, the butterfly plate sealing ring is installed on the butterfly plate through the bolt, the valve seat sealing ring is installed on the valve seat, and the driving mechanism is installed on the outside of the valve body.

[0039] A three-eccentric butterfly valve processing method, the taper face processing device comprises a support assembly 200 and a driving assembly 100, the top end of the driving assembly 100 is provided with a drill arm 110, the support assembly 200 comprises a chassis 210, the top end of the chassis 210 is fixedly connected with a bottom plate 211, the middle position of the top surface of the bottom plate 211 is fixedly connected with an inclined shaft rod 212, the outer side wall of the inclined shaft rod 212 is slidably connected with a moving piece 240, one end of the moving piece 240 is rotatably connected with a transmission shaft 250, the top end of the transmission shaft 250 is fixedly sleeved with an inclined table 270, one end of the moving piece 240 is fixedly installed with a driving motor 260, the output end of the driving motor 260 is drivingly connected with the transmission shaft 250, the driving motor 260 is used to drive the transmission shaft 250 to rotate, one side wall of the bottom plate 211 is fixedly connected with an adjusting assembly 300, the adjusting assembly 300 comprises a vertical rod 310, a horizontal moving module 320 is arranged between the bottom end of the vertical rod 310 and the ground of the bottom plate 211, the outer side wall of the vertical rod 310 is slidably sleeved with a sleeve 330, the outer side wall of the sleeve 330 is rotatably connected with a rotating rod 333, the sleeve 330 is used to drive the moving piece 240 to ascend and descend, the cutting head of the drill arm 110 is controlled to move up and down along the right conical generatrix, at the same time, the driving motor 260 drives the transmission shaft 250 to rotate, so that the inclined table 270 rotates, so that the sealing ring rotates horizontally, when the left side edge position of the sealing ring relatively rises during rotation, the sleeve 330 moves two units to drive the inclined table 270 to move 1 unit along the inclined shaft rod 212, so that the relative descending distance of the right side edge position of the sealing ring is compensated, so that the position of the right side of the sealing ring is actually always kept at the same position, the cutting head is always in contact with the processing surface and is processed and ground, the advancing process of the cutting head during processing is reduced, the cutting of the processing surface is smooth, and the processing efficiency of the tapered surface is increased.

[0040] The top surface of the bottom plate 211 is fixedly connected with a fixed rod one 342 at one side of the vertical rod 310, one side wall of the fixed rod one 342 is slidably connected with a toothed rod one 340, the top surface of the bottom plate 211 is fixedly connected with two fixed rods three 360 at one side of the moving piece 240, one side of the fixed rod three 360 is slidably connected with a toothed rod two 361, and the side walls of the two toothed rod twos 361 are fixedly connected with a bracket 370, the bracket 370 is located below the other end of the moving piece 240, the transmission module 350 is arranged between the toothed rod one 340 and the two toothed rod twos 361, the sleeve 330 drives the toothed rod one 340 to move up and down, the toothed rod one 340 drives the bracket 370 to move up and down through the transmission module 350, and the bracket 370 drives the moving piece 240 to move up and down along the inclined shaft rod 212, so that the outer edge position on the right side of the sealing ring remains unchanged when the sealing ring rotates, the outer side wall of the sleeve 330 is fixedly connected with a connecting rod 331, the bottom end of the connecting rod 331 is fixedly connected with a sliding block 332, the bottom end outer side wall of the toothed rod one 340 is fixedly connected with a groove rod 341, and the sliding block 332 is slidably connected with the inner wall of the groove rod 341, so that the sleeve 330 remains connected with the toothed rod one 340 when the vertical rod 310 moves left and right, and the sleeve 330 drives the toothed rod one 340 to move up and down.

[0041] The horizontal movement module 320 comprises a lead screw 322, the lead screw 322 is embeddedly and fixedly connected with the top surface of the bottom plate 211, the bottom end of the vertical rod 310 is fixedly connected with a sliding seat 311, the sliding seat 311 is slidably connected with the inner wall of the horizontal rail 321, one end of the horizontal rail 321 is rotatably connected with the lead screw 322, the lead screw 322 is screwingly connected between the sliding seat 311, the sliding seat 311 and the sleeve 330 are fixedly connected with a return spring 312, the return spring 312 is slidably connected with the vertical rod 310, the lead screw 322 is rotated, thereby driving the sliding seat 311 and the vertical rod 310 to move, the left and right positions of the vertical rod 310 are adjusted through the horizontal movement module 320, thereby facilitating the contact between the rotating rod 333 and the outer edge of the sealing ring, the transmission module 350 comprises a fixed rod two 351, the bottom end of the fixed rod two 351 is fixedly connected with the top surface of the bottom plate 211, one side of the top end of the fixed rod two 351 is rotatably connected with a shaft one 352, the other side of the top end of the fixed rod two 351 is rotatably connected with a shaft two 355, a gear two 354 is fixedly sleeved on the outer side wall of the shaft one 352 at the middle position, a gear one 353 is fixedly sleeved on the other end of the shaft one 352, a gear three 356 is fixedly sleeved on the outer side wall of the shaft two 355 at positions corresponding to the two toothed rod twos 361, the gear three 356 is meshed with the adjacent toothed rod two 361, one gear three 356 is meshed with the gear two 354, the gear one 353 is meshed with the toothed rod one 340, when the sleeve 330 moves up, the toothed rod one 340 is driven to move up through the connecting rod 331, the toothed rod one 340 drives the toothed rod two 361 to move up through the gear one 353 and the two gear threes 356, thereby driving the bracket 370 to move up.

[0042] The outer diameter of the gear one 353 is twice the outer diameter of the gear two 354, so that the vertical movement distance of the sleeve 330 is twice the vertical movement distance of the inclined table 270, facilitating the upward movement of the inclined table 270. The top surface of the inclined table 270 is annularly fixed with a plurality of slide rails 271, the inner wall of the slide rail 271 is slidingly connected with a slide rod 280, a circular hole 281 is formed at one end of the slide rod 280, a thread groove is formed in the inner wall of the circular hole 281, and a fastening knob 282 is screw-connected to the other end of the slide rod 280. The top end of the transmission shaft 250 is fixedly connected with a marker 251, and the marker 251 is used for marking the center position of the top surface of the inclined table 270.

[0043] A support ring 230 is arranged below the inclined table 270, a plurality of support modules 220 are arranged equidistantly between the support ring 230 and the bottom plate 211, a plurality of rolling balls are embedded in the top surface of the support ring 230 and are rotationally connected, facilitating the transverse movement between the inclined table 270 and the support ring 230 when the inclined table 270 moves along the inclined shaft 212, reducing the friction between the support module 220 and the support ring 230, the support module 220 comprises a sleeve rod 221, a plug rod 222 is slidingly sleeved in the inner wall of the sleeve rod 221, a support spring 223 is arranged between the top end of the sleeve rod 221 and the bottom surface of the support ring 230, the support spring 223 is slidingly sleeved with the plug rod 222, and the top end of the plug rod 222 is fixedly connected with the support ring 230. The support ring 230 and the inclined table 270 are additionally supported by the support spring 223, the load exerted by the gravity of the inclined table 270 on the return spring 312 is reduced, and the inclined table 270 is facilitated to rise.

[0044] Working principle: when in use, the slide rod 280 is moved, the circular hole 281 is aligned with the threaded hole on the sealing ring, the sealing ring is fixed with the fastening knob 282 through the bolt, so that the sealing ring is inclinedly fixed on the inclined table 270, and at this time, the non-machining annular surface of the sealing ring is concentric with the marker 251, the lead screw 322 is rotated, the vertical rod 310 is driven to move left and right through the sliding seat 311, the positions of the vertical rod 310 and the sleeve 330 are adjusted, so that the outer side wall of the rotating rod 333 is in contact with the lower side edge of the sealing ring.

[0045] When processing, the cutting head of the drill arm 110 is controlled to move up and down along the right conical generatrix, and the transmission shaft 250 is driven by the motor 260 to rotate, so that the inclined table 270 rotates, so that the sealing ring rotates horizontally, and the left side edge position of the sealing ring rises relatively when the sealing ring rotates, so that the rotating rod 333 and the sleeve 330 move up synchronously under the elastic force of the reset spring 312, the sleeve 330 drives the tooth bar one 340 to move up through the connecting rod 331 and the sliding block 332, the tooth bar two 361 is driven to move up through the tooth bar one 340, the tooth gear three 356 and the tooth gear one 353, and because the outer diameter of the tooth gear two 354 is half of the tooth gear one 353, the moving distance of the tooth bar two 361 is only half of the tooth bar one 340, so that when the sleeve 330 moves up by 2 unit distances, the bracket 370 drives the inclined table 270 to move up by 1 unit along the inclined shaft 212 through the moving piece 240, so that the sealing ring compensates for the relative downward movement of the right side edge position, so that the position of the right side of the sealing ring is always the same, facilitating the cutting head to always contact the processing surface and process and grind, reducing the processing progress of the cutting head, making the cutting of the processing surface smooth while increasing the processing efficiency of the conical surface, and accurately processing the conical surface, and through the setting of the sliding rod 280 and the horizontal moving module 320, different sizes of sealing rings can be processed.

[0046] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above is only an example and description of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the invention or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A method for processing a triple eccentric butterfly valve, characterized in that, The specific steps for processing this triple eccentric butterfly valve are as follows: Step 1: Place the butterfly plate blank on the machine tool, machine its shape according to the dimensions, and drill multiple threaded holes at equal intervals; Step 2: The valve body blank is machined using a CNC machine tool to bore out its internal space and form an annular valve seat inside. Multiple threaded holes are drilled at equal intervals on the valve seat. Step 3: Drill a threaded hole on the butterfly plate sealing ring that corresponds to the threaded hole on the butterfly plate. Similarly, drill a threaded hole on the valve seat sealing ring that is the same as the threaded hole on the valve seat. Install the butterfly plate sealing ring or the valve seat sealing ring onto the conical surface machining device, so that the machining surface of the sealing ring is machined into an oblique conical surface. Step 4: Install the butterfly plate onto the valve body, install the butterfly plate sealing ring onto the butterfly plate with bolts, install the valve seat sealing ring onto the valve seat, and install the transmission mechanism on the outside of the valve body; The conical surface machining device includes a support assembly (200) and a drive assembly (100). A drill arm (110) is mounted on the top of the drive assembly (100). The support assembly (200) includes a base frame (210). A base plate (211) is fixedly connected to the top of the base frame (210). A slanted shaft (212) is fixedly connected to the middle of the top surface of the base plate (211). A movable component (240) is slidably connected to the outer wall of the slanted shaft (212). A drive shaft (250) is rotatably connected to one end of the movable component (240). A ramp (270) is fixedly sleeved on the top of the drive shaft (250). A drive is fixedly mounted on one end of the movable component (240). The motor (260) is connected to the transmission shaft (250) at its output end. The motor (260) is used to drive the transmission shaft (250) to rotate. An adjustment assembly (300) is fixed to one side wall of the base plate (211). The adjustment assembly (300) includes a pole (310). A transverse module (320) is provided between the bottom end of the pole (310) and the ground of the base plate (211). A sleeve (330) is slidably sleeved on the outer side wall of the pole (310). A rotating rod (333) is rotatably connected to one side of the outer side wall of the sleeve (330). The sleeve (330) is used to drive the moving part (240) to rise and fall.

2. The method for processing a triple eccentric butterfly valve according to claim 1, characterized in that, The top surface of the base plate (211) is fixedly connected to a fixing rod (342) on one side of the upright (310). A toothed rod (340) is slidably connected to one side wall of the fixing rod (342). Two fixing rods (360) are fixedly connected to the top surface of the base plate (211) on one side of the moving part (240). A toothed rod (361) is slidably connected to one side of the fixing rod (360). A bracket (370) is fixedly connected between the side walls of the two toothed rods (361). The bracket (370) is located below the other end of the moving part (240). A transmission module (350) is provided between the toothed rod (340) and the two toothed rods (361).

3. The processing method for a triple eccentric butterfly valve according to claim 2, characterized in that, A connecting rod (331) is fixedly connected to the outer wall of the sleeve (330), a slider (332) is fixedly connected to the bottom end of the connecting rod (331), a grooved rod (341) is fixedly connected to the outer wall of the bottom end of the toothed rod (340), and the slider (332) is slidably connected to the inner wall of the grooved rod (341).

4. A method for processing a triple eccentric butterfly valve according to claim 3, characterized in that, The transverse module (320) includes a lead screw (322), which is embedded and fixed to the top surface of the base plate (211). The bottom end of the upright (310) is fixed to a slide block (311), which is slidably connected to the inner wall of the transverse rail (321). One end of the transverse rail (321) is rotatably connected to the lead screw (322), which is screwed to the slide block (311). A return spring (312) is fixed between the slide block (311) and the sleeve (330), and the return spring (312) is slidably sleeved with the upright (310).

5. A method for processing a triple eccentric butterfly valve according to claim 2, characterized in that, The transmission module (350) includes a second fixed rod (351), the bottom end of which is fixedly connected to the top surface of the base plate (211). A shaft (352) is rotatably connected to one side of the top end of the second fixed rod (351), and a shaft (355) is rotatably connected to the other side of the top end of the second fixed rod (351). A gear (354) is fixedly sleeved at the middle position of the outer side wall of the shaft (352), and a gear (353) is fixedly sleeved at the other end of the shaft (352). A gear (356) is fixedly sleeved at the two positions of the two racks (361) on the outer side wall of the shaft (355). The gear (356) meshes with the adjacent rack (361), and one gear (356) meshes with the gear (354). The gear (353) meshes with the rack (340).

6. A method for processing a triple eccentric butterfly valve according to claim 5, characterized in that, The outer diameter of gear one (353) is twice the outer diameter of gear two (354).

7. A method for processing a triple eccentric butterfly valve according to claim 1, characterized in that, The top surface of the inclined platform (270) is fixedly connected with multiple slide rails (271) in an annular shape. The inner wall of the slide rail (271) is slidably connected with a slide rod (280). One end of the slide rod (280) is provided with a round hole (281). The inner wall of the round hole (281) is provided with a thread groove. The other end of the slide rod (280) is screwed with a fastening knob (282). The top end of the drive shaft (250) is fixedly connected with a marker rod (251).

8. A method for processing a triple eccentric butterfly valve according to claim 1, characterized in that, A support ring (230) is provided below the inclined platform (270). Multiple support modules (220) are provided at equal intervals between the support ring (230) and the base plate (211). Multiple balls are embedded and rotatably connected to the top surface of the support ring (230).

9. A method for processing a triple eccentric butterfly valve according to claim 8, characterized in that, The support module (220) includes a sleeve rod (221), and an insert rod (222) is slidably sleeved on the inner wall of the sleeve rod (221). A support spring (223) is provided between the top end of the sleeve rod (221) and the bottom surface of the support ring (230). The support spring (223) is slidably sleeved with the insert rod (222), and the top end of the insert rod (222) is fixedly connected to the support ring (230).

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