A triple eccentric butterfly valve grinding device and method

Abstract

The present invention relates to the technical field of grinding machine tools, and discloses a three-eccentric butterfly valve grinding processing device and method, including a base and a mounting frame above the base, a turntable is installed on the base; it also includes a grinding assembly for grinding operations; a clamping assembly for clamping a workpiece; a collecting assembly for collecting waste chips; the clamping assembly includes a swivel seat, the top surface of the swivel seat is slidably connected to a slide seat, and the top surface of the slide seat is hinged to a lifting seat. Through the cooperation of the grinding assembly and the clamping assembly, the staff can switch between the two grinding modes of horizontal rotation grinding and tilted rotation grinding of the valve body through a hydraulic cylinder to meet the grinding requirements of different parts of the valve body, reduce equipment cost investment, and improve work efficiency; through the cooperation of four claw blocks, four crank arms and a swivel, the four claw blocks can be moved outward or inward synchronously, which is convenient to operate and can also play the role of centering the valve body.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machine tools, and in particular to a grinding processing device and method for a triple-eccentric butterfly valve. Background Art

[0002] The three-eccentric butterfly valve is a high-performance valve widely used in various industrial fields. The first eccentricity is that the valve shaft deviates from the center of the butterfly plate, the second eccentricity is that the cone axis of the butterfly plate sealing surface deviates from the center of the valve body channel, and the third eccentricity is that the valve shaft tilts at a certain angle. This design allows the butterfly plate to quickly detach from the valve seat when it is opened, reducing friction and achieving good sealing when it is closed. The three-eccentric butterfly valve usually adopts a combination of metal sealing and non-metallic sealing, such as inlaying soft materials such as polytetrafluoroethylene on the valve seat, and using the metal sealing surface to ensure the strength and reliability of the valve, achieve a two-way sealing function, and improve the sealing performance. During the production process of the three-eccentric butterfly valve, the valve body needs to be ground.

[0003] However, the prior art has the following problems:

[0004] When grinding the valve body, it is necessary to grind the inner wall of the valve body first. During the grinding operation, the valve body rotates horizontally. When grinding the valve seat sealing surface, the valve body needs to be tilted and clamped, and then the tilted and rotating valve body is ground. The existing technology usually requires two sets of grinding devices to achieve two different clamping and grinding methods, which increases the equipment cost investment. In addition, the transfer of the valve body during processing will take up part of the working time, affecting work efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a triple eccentric butterfly valve grinding processing device and method in order to solve the above-mentioned problems and overcome the defects of the prior art, as described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A three-eccentric butterfly valve grinding processing device provided by the present invention includes a base and a mounting frame above the base, a turntable is installed on the base; it also includes a grinding assembly for grinding operations; a clamping assembly for clamping the workpiece; and a collecting assembly for collecting waste chips; the grinding assembly includes a movable seat, the movable seat is slidably mounted on the mounting frame, a sliding block is slidably connected to the movable seat, a telescopic cylinder is connected to the sliding block, the output end of the telescopic cylinder is connected to the machine base, the output end of the machine base is connected to a grinding head, and the outer wall of the machine base is connected to a tool via a bracket; the clamping assembly includes a swivel seat, the swivel seat is rotatably mounted on the turntable, the top surface of the swivel seat is slidably connected to a sliding seat, the top surface of the sliding seat is hinged with a lifting seat, the top surface of the lifting seat is connected to a clamping seat, and four claw blocks are slidably installed through the top surface of the clamping seat.

[0008] Preferably, a driving device is provided inside the turntable, the driving device of the turntable is connected to the turntable, a hydraulic cylinder is installed on the inner wall of the turntable, the bottom surface of the lifting seat is slidably connected to a connecting piece, and the connecting piece is hinged to the output end of the hydraulic cylinder.

[0009] Preferably, the bottom surface of the slide seat is connected with a slot block, the slot block is provided with an inclined slot, the output end of the hydraulic cylinder is connected with a sliding shaft through a bracket, and the sliding shaft is slidably connected with the inclined slot of the slot block.

[0010] Preferably, the four claw blocks are arranged in a circular array with the center of the clamping seat as the center, and the bottoms of the two claw blocks located on both sides of the hinged part of the sliding seat and the lifting seat are respectively connected to nut seats, and a bidirectional screw rod is rotatably connected through the inner wall of the clamping seat, and two thread grooves in opposite directions are provided on the bidirectional screw rod. The two thread grooves of the bidirectional screw rod are respectively threadedly connected to the two nut seats, and hand wheels are respectively provided at both ends of the bidirectional screw rod.

[0011] Preferably, the top inner wall of the clamping seat is rotatably connected to a swivel, and four curved arms are hinged on the swivel. The four curved arms are arranged in a circular array with the center of the swivel as the center, and the ends of the four curved arms away from the swivel are respectively hinged to the bottom of four claw blocks.

[0012] Preferably, the collecting assembly includes a fixed box, which is mounted on the inner wall of the rotating seat, and the inner wall of the fixed box is slidably connected with a pull-out box, and the pull-out box is provided with a handle and an observation window, and the lifting seat is provided with a discharge port, and ramps are provided around the discharge port of the lifting seat, and the inner wall of the discharge port of the lifting seat is connected to a telescopic connecting cover, and the end of the telescopic connecting cover away from the lifting seat is connected to the top of the fixed box, and the bottom end of the telescopic connecting cover is located above the pull-out box.

[0013] Preferably, a plurality of leakage grooves are provided on the clamping seat, a bevel gear rod is rotatably mounted on the lifting seat, the outer wall of the bidirectional screw is connected with a bevel gear ring, the bevel gear ring is meshed with the bevel gear rod, and the outer wall of the bevel gear rod is connected with two arc-shaped scraping strips, which contact the top surface of the lifting seat when moving.

[0014] Preferably, the outer walls on both sides of the telescopic connecting cover are respectively connected to elastic rods, a plurality of spring plates are connected between the elastic rods and the telescopic connecting cover, the outer walls on both sides of the slot block are connected to two connecting rods, the connecting rods are connected to serrated rods, and the two serrated rods respectively contact the two elastic rods when moving.

[0015] Preferably, the collecting assembly also includes a spreading part, which includes two sliding bars, both of which are installed on the inner wall of the pull-out box, and counterweight blocks are slidably connected to the two sliding bars. Two return springs are connected between the counterweight blocks and the inner wall of the pull-out box, and the bottom of the counterweight blocks is rotatably connected to two gears, and the bottom of the gears is connected to a rotating frame, and the bottom surface of the rotating frame is connected to a plurality of paddles, and the inner wall of the pull-out box is connected to two racks, and the two racks are respectively located on the side of the two sliding bars away from each other, and the two racks are respectively meshed with the two gears.

[0016] A grinding method for a triple-eccentric butterfly valve comprises the following steps:

[0017] Step 1: Loading, place the valve body on the clamping seat using a hanger, turn the bidirectional screw, and the four claws will clamp the valve body firmly;

[0018] Step 2: Check before starting the machine, set the movement parameters of the grinding components, check the quality of the tools and grinding heads, and replace the tools and grinding heads that do not meet the requirements in time;

[0019] Step 3: Grinding the valve body, start the driving device in the turntable, so that the clamping seat drives the valve body to rotate, and the tool is used to grind during the rotation;

[0020] Step 4: Grinding the valve seat, start the hydraulic cylinder to lift the lifting seat and the clamping seat, so that the valve body can be tilted and rotated, and after grinding the valve seat sealing surface with a tool, use the grinding head to grind the sealing surface;

[0021] Step 5: Completion inspection: After processing, the grinding surface of the valve body is inspected for size and surface flatness;

[0022] Step 6: Shutdown for maintenance: After shutdown, clean the clamping seat, claw block and waste chips in the drawer box, and check and maintain the tool and grinding head.

[0023] The beneficial effects are:

[0024] 1. The three-eccentric butterfly valve grinding device, through the cooperation of the grinding component and the clamping component, enables the staff to switch between the two grinding modes of horizontal rotation grinding and tilt rotation grinding of the valve body through the hydraulic cylinder to meet the grinding requirements of different parts of the valve body, reduce the equipment cost investment, and improve work efficiency; through the cooperation of four claw blocks, four curved arms and swivels, the four claw blocks can be moved outward or inward synchronously, which is easy to operate and can also play the effect of centering the valve body; through the cooperation of the grinding head and the tool, the grinding head can grind the working surface after part of the tool contact, further improve the functionality of the grinding component, reduce the operation time of subsequent fine grinding operations, and thus speed up the overall work process.

[0025] 2. The three-eccentric butterfly valve grinding processing device, through the setting of the collecting component, allows the waste chips generated during the valve body processing to enter the pull-out box for collection through the telescopic connecting cover, so as to avoid the accumulation of a lot of waste chips on the clamping seat after a long period of processing, which requires manual cleaning and thus affects the work efficiency. The fixed-point collection method is also convenient for the staff to deal with the waste chips; through the setting of two arc-shaped scraping strips, the two arc-shaped scraping strips can regularly scrape off the waste chips that have not fallen off the lifting seat in time, so as to ensure the smoothness of the waste chip discharge channel; through the setting of two elastic rods, the two elastic rods can regularly drive the telescopic connecting cover to vibrate, so that the telescopic connecting cover can shake off the waste chips attached to its inner wall, so as to avoid a lot of waste chips attached to the inner wall affecting its performance.

[0026] 3. The three-eccentric butterfly valve grinding processing device, through the setting of the spreading part, enables multiple paddles to move and rotate the waste chips in the pull-out box when the swivel seat starts to rotate and stops rotating, thereby avoiding excessive accumulation of local waste chips, improving the uniformity of waste chip accumulation, and facilitating the staff to observe the amount of waste chips. At the same time, it also avoids excessive accumulation of local waste chips and affects the smoothness of the waste chip falling channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the grinding assembly of the present invention;

[0030] Figure 3 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0031] Figure 4 is a schematic diagram of the transposition structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the slide structure of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the clamping seat of the present invention;

[0034] Figure 7 It is a schematic diagram of the crank arm structure of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the collection component of the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the arc-shaped scraper strip of the present invention;

[0037] Fig.10 It is a schematic diagram of the structure of the telescopic connection cover of the present invention;

[0038] Fig.11 It is a schematic diagram of the structure of the drawer box of the present invention;

[0039] Fig.12 It is a schematic diagram of the structure of the paving assembly of the present invention.

[0040] The reference numerals are as follows: 1. base; 2. turntable; 3. mounting frame; 4. grinding assembly; 41. movable seat; 42. slide block; 43. telescopic cylinder; 44. machine base; 45. grinding head; 46. tool; 5. clamping assembly; 51. turntable; 52. slide seat; 53. lifting seat; 54. clamping seat; 55. hydraulic cylinder; 56. connecting piece; 57. slot block; 58. sliding shaft; 59. claw block; 510. nut Seat; 511, swivel; 512, curved arm; 513, bidirectional screw; 6, collecting assembly; 61, fixed box; 62, telescopic connecting cover; 63, pull-out box; 64, bevel gear ring; 65, bevel gear rod; 66, arc scraper; 67, elastic rod; 68, serrated rod; 69, connecting rod; 7, paving part; 71, sliding rod; 72, counterweight; 73, rotating frame; 74, paddle; 75, gear; 76, rack. DETAILED DESCRIPTION

[0041] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0042] Example 1

[0043] See also Figure 1 - Figure 7, a three-eccentric butterfly valve grinding processing device, including a base 1 and a mounting frame 3 above it, a turntable 2 is mounted on the base 1; it also includes a grinding assembly 4 for grinding operations; the grinding assembly 4 includes a movable seat 41, the movable seat 41 is slidably mounted on the mounting frame 3, a slider 42 is slidably connected to the movable seat 41, the slider 42 is connected to a telescopic cylinder 43, the output end of the telescopic cylinder 43 is connected to a machine base 44, the output end of the machine base 44 is connected to a grinding head 45, and the outer wall of the machine base 44 is connected to a tool 46 through a bracket. The grinding assembly 4 is a prior art, a driving device is provided in the mounting frame 3 to drive the movable seat 41 to move left and right, a driving device is provided in the movable seat 41 to drive the slider 42 to move up and down, the telescopic cylinder 43 can drive the machine base 44 to move forward and backward, a motor is provided in the machine base 44 to drive the grinding head 45 to rotate, the tool 46 and its mounting bracket can be disassembled, the machine base 44 can realize position adjustment in three directions of X-axis, Y-axis and Z-axis, and the moving route of the machine base 44 can be set by setting grinding parameters;

[0044] The clamping assembly 5 is used to clamp the workpiece. The clamping assembly 5 includes a swivel seat 51, which is rotatably mounted on the turntable 2. A driving device is arranged inside the turntable 2. The driving device of the turntable 2 is connected to the swivel seat 51. The top surface of the swivel seat 51 is slidably connected to a slide seat 52. The top surface of the slide seat 52 is hinged to a lifting seat 53. The top surface of the lifting seat 53 is connected to a clamping seat 54. Four claw blocks 59 are slidably mounted on the top surface of the clamping seat 54. The four claw blocks 59 are arranged in a circular array with the center of the clamping seat 54 as the center. The bottoms of the two claw blocks 59 on both sides of the hinged part of the slide seat 52 and the lifting seat 53 are respectively connected to nut seats 510. A bidirectional screw rod 513 is rotatably connected to the inner wall of the clamping seat 54. The bidirectional screw rod 513 is provided with two threaded grooves in opposite directions. The two thread grooves of the bidirectional screw rod 513 are respectively threadedly connected to the two nut seats 510. Hand wheels are respectively arranged at both ends of the bidirectional screw rod 513. During rotation, the two nut seats 510 are driven to move away from each other through the two thread grooves, and the two nut seats 510 drive the claw blocks 59 connected thereto to move outward. The top inner wall of the clamping seat 54 is rotatably connected with a swivel 511, and four curved arms 512 are hinged on the swivel 511. The four curved arms 512 are arranged in a circular array with the center of the swivel 511 as the center. One end of the four curved arms 512 away from the swivel 511 is hinged to the bottom of the four claw blocks 59 respectively. When the two claw blocks 59 move outward, the swivel 511 is driven to rotate through the two curved arms 512. When the swivel 511 rotates, the other two claw blocks 59 are driven to move outward through the other two curved arms 512, so that the four claw blocks 59 can move outward or inward synchronously. After the four claw blocks 59 contact the inner wall of the valve body, the valve body is supported and clamped from the inner wall. Since the four claw blocks 59 move synchronously, the valve body can be centrally positioned during clamping.

[0045] A hydraulic cylinder 55 is installed on the inner wall of the rotating seat 51, and a connecting piece 56 is slidably connected to the bottom surface of the lifting seat 53. The connecting piece 56 is hinged to the output end of the hydraulic cylinder 55. The hydraulic cylinder 55 pushes the lifting seat 53 upward through the connecting piece 56, so that the lifting seat 53 drives the clamping seat 54 to form an angle with the sliding seat 52, and the valve body is tilted, thereby switching to the working mode of valve body tilting and rotating grinding. The bottom surface of the sliding seat 52 is connected to a groove block 57, and an inclined groove is set on the groove block 57. The output end of the hydraulic cylinder 55 is connected to a sliding shaft 58 through a bracket. The sliding shaft 58 is slidably connected with the inclined groove of the groove block 57. When the sliding shaft 58 moves upward, the groove block 57 is driven to move toward the direction close to the hydraulic cylinder 55 through the inclined groove of the groove block 57. The groove block 57 drives the sliding seat 52 to move toward the direction close to the hydraulic cylinder 55, and the lifting seat 53, the clamping seat 54 and the valve body above it also move synchronously, so that the center of the valve body after tilting is still concentric with the rotation center of the rotating seat 51, which has the effect of centering the valve body. After the valve body is tilted, it rotates again, and the grinding operation is performed through the cooperation of the tool 46 and the grinding head 45;

[0046] Through the cooperation of the grinding assembly 4 and the clamping assembly 5, the staff can switch between the two grinding modes of horizontal rotation grinding and tilt rotation grinding of the valve body through the hydraulic cylinder 55 to meet the grinding requirements of different parts of the valve body, reduce equipment cost investment, and improve work efficiency; through the cooperation of four claw blocks 59, four curved arms 512 and swivel ring 511, the four claw blocks 59 can move outward or inward synchronously, which is easy to operate and can also play the effect of centering the valve body; through the cooperation of the grinding head 45 and the tool 46, the grinding head 45 can grind the working surface after part of the tool 46 contacts, further improving the functionality of the grinding assembly 4, reducing the operation time of subsequent fine grinding operations, and thus speeding up the overall work progress.

[0047] For further information, see Figure 8 - Fig.11The collecting component 6 is used to collect waste chips. The collecting component 6 includes a fixed box 61, which is installed on the inner wall of the rotating seat 51. The inner wall of the fixed box 61 is slidably connected with a pull-out box 63. The pull-out box 63 is provided with a handle and an observation window. The handle is used to pull the pull-out box 63, and the observation window can observe the amount of waste chips. A discharge port is provided on the lifting seat 53. Ramps are provided around the discharge port of the lifting seat 53. The inner wall of the discharge port of the lifting seat 53 is connected with a telescopic connecting cover 62. The end of the telescopic connecting cover 62 away from the lifting seat 53 is connected to the top of the fixed box 61. When the lifting seat 53 is lifted and moved, the telescopic connecting cover 62 is retracted accordingly. The bottom end of the telescopic connecting cover 62 is located above the pull-out box 63. The clamping seat 54 is provided with a The waste chips fall onto the lifting seat 53 through the grooves of the clamping seat 54, then slide into the discharge port through the ramp of the lifting seat 53, and finally fall into the draw-out box 63 through the telescopic connecting cover 62. The draw-out box 63 can be disassembled to clean the waste chips inside it; a bevel gear rod 65 is rotatably installed on the lifting seat 53, and the outer wall of the two-way screw rod 513 is connected with a bevel gear ring 64, which meshes with the bevel gear ring 64 and the outer wall of the bevel gear rod 65 is connected with two arc scraping strips 66, which contact the top surface of the lifting seat 53 when moving, and the bevel gear ring 64 drives the bevel gear rod 65 to rotate, and the bevel gear rod 65 drives the two arc scraping strips 66 to rotate, and the arc scraping strip 66 can remove the waste chips it contacts through its arc setting when rotating. When the inner side of the curved scraper strip 66 moves, it passes over the telescopic connection cover 62, so that the two curved scraper strips 66 can scrape the waste chips at the discharge port of the lifting seat 53 and the edge of the ramp into the discharge port when the two curved scraper strips 66 move; the outer walls of the telescopic connection cover 62 on both sides are respectively connected to elastic rods 67, and a plurality of spring plates are connected between the elastic rods 67 and the telescopic connection cover 62; the outer walls of the slot block 57 on both sides are connected to two connecting rods 69, and the connecting rods 69 are connected to the sawtooth rods 68. When the two sawtooth rods 68 move, they contact the two elastic rods 67 respectively. After the elastic rods 67 are rubbed by the sawtooth rods 68, they will vibrate and transmit the vibration to the telescopic connection cover 62 through a plurality of spring plates, so that the two elastic rods 67 drive the telescopic connection The cover 62 vibrates, and the telescopic connection cover 62 can shake off the waste chips attached to its inner wall through vibration, so as to avoid that the inner wall of the telescopic connection cover 62 is attached with a lot of waste chips after long-term use, thereby affecting its performance; through the setting of the collecting component 6, the waste chips generated during the processing of the valve body can pass through the telescopic connection cover 62 and enter the drawer box 63 for collection, so as to avoid that a lot of waste chips are accumulated on the clamping seat 54 after a long period of processing, which requires manual cleaning and thus affects the work efficiency. The fixed-point collection method is also convenient for the staff to handle the waste chips; through the setting of the two arc-shaped scraping strips 66, the two arc-shaped scraping strips 66 can regularly scrape off the waste chips that have not fallen off the lifting seat 53 in time, so as to ensure the smoothness of the waste chip discharge channel;Through the arrangement of the two elastic rods 67, the two elastic rods 67 can regularly drive the telescopic connection cover 62 to vibrate, so that the telescopic connection cover 62 can shake off the waste attached to its inner wall, thereby preventing the waste attached to the inner wall from affecting its performance.

[0048] Further, see Fig.11 - Fig.12 The collecting assembly 6 also includes a spreading part 7, which includes two sliding rods 71. The two sliding rods 71 ​​are both installed on the inner wall of the drawer box 63. The two sliding rods 71 ​​are slidably connected with counterweights 72. When the rotating seat 51 rotates, the counterweights 72 slide outward on the two sliding rods 71 ​​using centrifugal force. Two return springs are connected between the counterweights 72 and the inner wall of the drawer box 63. After the rotating seat 51 stops rotating, the counterweights 72 are reset by the elastic force of the two return springs. The bottom of the counterweights 72 is rotatably connected to two gears 75. The bottom of the gear 75 is connected to a rotating frame 73. The bottom surface of the rotating frame 73 is connected to a plurality of paddles 74. The inner wall of the drawer box 63 is connected to two racks 76. The two racks 76 are respectively located on the two sliding rods 71 ​​away from each other. On one side, two racks 76 are respectively meshed with two gears 75. When the gear 75 moves outward, it rotates by meshing with the racks 76. When the rotating frame 73 moves, it drives multiple paddles 74 to move and rotate. The paddles 74 are elastically set. When moving and rotating, the multiple paddles 74 evenly move the waste chips inside the pull-out box 63 to avoid excessive accumulation of local waste chips. Through the setting of the paving part 7, when the rotating seat 51 starts to rotate and stops rotating, the multiple paddles 74 can move and rotate the waste chips in the pull-out box 63 to avoid excessive accumulation of local waste chips, improve the uniformity of waste chip accumulation, and facilitate the staff to observe the amount of waste chips. At the same time, it also avoids excessive accumulation of local waste chips and affects the smoothness of the waste chip falling channel.

[0049] Example 2

[0050] A triple eccentric butterfly valve grinding method, using a triple eccentric butterfly valve grinding device in Example 1, further comprising the following steps:

[0051] Step 1: Loading: Place the valve body on the clamping seat 54 using a sling, rotate the bidirectional screw rod 513, and the four claw blocks 59 clamp the valve body firmly;

[0052] Step 2: Check before starting the machine, set the movement parameters of the grinding assembly 4, check the quality of the tool 46 and the grinding head 45, and replace the tool 46 and the grinding head 45 that do not meet the requirements in time;

[0053] Step 3: grinding the valve body, starting the driving device in the turntable 2, so that the clamping seat 54 drives the valve body to rotate, and the tool 46 is used to grind the valve body during the rotation;

[0054] Step 4: Grinding the valve seat, start the hydraulic cylinder 55 to lift the lifting seat 53 and the clamping seat 54, so that the valve body is tilted and rotated, and after the valve seat sealing surface is ground by the tool 46, the sealing surface is polished by the grinding head 45;

[0055] Step 5: Completion inspection: After processing, the grinding surface of the valve body is inspected for size and surface flatness;

[0056] Step 6: Shut down for maintenance. After shutting down, clean the clamping seat 54, the claw block 59 and the waste chips in the drawer box 63, and check and maintain the tool 46 and the grinding head 45.

[0057] With the above structure, the working principle of this case is that the grinding assembly 4 is the existing technology, the mounting frame 3 is provided with a driving device which can drive the movable seat 41 to move left and right, the movable seat 41 is provided with a driving device which drives the slider 42 to move up and down, the telescopic cylinder 43 can drive the machine base 44 to move forward and backward, the machine base 44 is provided with a motor which drives the grinding head 45 to rotate, the tool 46 and its mounting bracket can be disassembled, the machine base 44 can realize position adjustment in three directions of X-axis, Y-axis and Z-axis, and the moving route of the machine base 44 can be set by setting the grinding parameters; the valve body is placed on the clamping seat 54, the four claw blocks 59 are located inside the valve body, the bidirectional screw rod 513 is rotated by the hand wheel, and when the bidirectional screw rod 513 rotates, the two nut seats are respectively driven through the two threaded grooves. 510 moves in the direction away from each other, and the two nut seats 510 drive the claw blocks 59 connected thereto to move outward, and the two claw blocks 59 drive the swivel 511 to rotate through the two curved arms 512. When the swivel 511 rotates, the other two claw blocks 59 are driven to move outward through the other two curved arms 512, so that the four claw blocks 59 can move outward or inward synchronously, and after the four claw blocks 59 contact the inner wall of the valve body, the valve body is supported and clamped from the inner wall, and since the four claw blocks 59 move synchronously, the valve body can be centrally positioned when clamped; after the valve body is clamped stably, the driving device inside the turntable 2 is started to rotate the swivel seat 51, and the swivel seat 51 drives the sliding seat 52, the lifting seat 53 and the clamping seat 54 to rotate, and the clamping seat 54 is The valve body is driven to rotate through four claw blocks 59. While the valve body is rotating, the machine base 44 drives the tool 46 to move and grind the valve body. When the machine base 44 moves downward, the grinding head 45 can grind the position after the tool 46 is ground to improve the smoothness. When grinding the valve seat sealing surface of the valve body, the hydraulic cylinder 55 is started. The hydraulic cylinder 55 pushes the lifting seat 53 upward through the connecting piece 56, so that the lifting seat 53 drives the clamping seat 54 to form an angle with the sliding seat 52, and the valve body is tilted. At the same time, the output end of the hydraulic cylinder 55 drives the sliding shaft 58 to move upward through the bracket. When the sliding shaft 58 moves upward, it drives the groove block 57 to move in the direction close to the hydraulic cylinder 55 through the inclined groove of the groove block 57. The groove block 57 drives the sliding seat 52 to move close to the liquid The pressure cylinder 55 moves in the direction of the lifting seat 53, the clamping seat 54 and the valve body above it also move synchronously, so that the center of the valve body after tilting is still concentric with the rotation center of the rotating seat 51, which has the effect of centering the valve body. After the valve body is tilted, it rotates again, and the grinding operation is performed through the cooperation of the tool 46 and the grinding head 45. After the tool 46 grinds the valve seat sealing surface, the grinding head 45 moves to contact the valve seat sealing surface, fine-grinds it, and improves the smoothness of the sealing surface; through the cooperation of the grinding assembly 4 and the clamping assembly 5, the staff can switch between the two grinding modes of horizontal rotation grinding and tilt rotation grinding of the valve body through the hydraulic cylinder 55 to meet the grinding requirements of different parts of the valve body, reduce equipment cost investment, and improve work efficiency;Through the cooperation of the four claw blocks 59, the four curved arms 512 and the swivel 511, the four claw blocks 59 can be synchronously moved outward or inward, which is convenient to operate and can also achieve the effect of centering the valve body; through the cooperation of the grinding head 45 and the tool 46, the grinding head 45 can grind the working surface after the contact of part of the tool 46, further improving the functionality of the grinding assembly 4, reducing the operation time of the subsequent fine grinding operation, and thus speeding up the overall work process. ;

[0058] Since the grinding working surface is on the inner side of the valve body, the waste chips generated during the grinding process fall on the position of the clamping seat 54 located on the inner side of the valve body. During the rotation of the clamping seat 54, the waste chips fall onto the lifting seat 53 through the leakage groove of the clamping seat 54, and then slide into the discharge port through the ramp of the lifting seat 53, and finally fall into the pull-out box 63 through the telescopic connecting cover 62. The fixed box 61 serves to install the pull-out box 63 and the telescopic connecting cover 62. The pull-out box 63 can be disassembled to clean the waste chips inside it. When the lifting seat 53 is lifted and moved, the telescopic connecting cover 62 is retracted accordingly. When the staff clamps and disassembles the valve body, the two-way screw rod 513 rotates and drives the bevel gear ring 6 4 rotates, the bevel gear ring 64 drives the bevel gear rod 65 to rotate, and the bevel gear rod 65 drives the two arc scraping strips 66 to rotate. The arc scraping strips 66 can move the scraps they touch to the inside of their curved part through their curved setting when rotating, and the inside of the curved part of the arc scraping strips 66 moves over the telescopic connection cover 62, so that the two arc scraping strips 66 can scrape the scraps at the discharge port of the lifting seat 53 and the edge of the ramp into the discharge port when moving, so as to avoid some scraps temporarily staying on the lifting seat 53 and causing the material jam. Therefore, when clamping and disassembling the valve body, the two arc scraping strips 66 can rotate to clean the scraps on the lifting seat 53; when the lifting seat 53 is lifted and lowered When the valve body is lowered, the groove block 57 moves and the two sawtooth rods 68 are driven to move through the two connecting rods 69, so that the two sawtooth rods 68 respectively use saw teeth to rub the two elastic rods 67. After the elastic rods 67 are rubbed by the sawtooth rods 68, they will vibrate and transmit the vibration to the telescopic connection cover 62 through multiple springs, so that the two elastic rods 67 drive the telescopic connection cover 62 to vibrate. The telescopic connection cover 62 can shake off the waste chips attached to its inner wall through vibration, so as to avoid that the inner wall of the telescopic connection cover 62 is attached with a lot of waste chips after long-term use, which affects its performance. By setting the collecting component 6, the waste chips generated during the processing of the valve body can be removed through the telescopic connection cover 62. The connecting cover 62 enters the pull-out box 63 for collection, so as to avoid the accumulation of a lot of waste chips on the clamping seat 54 after a long period of processing, which requires manual cleaning and affects the work efficiency. The fixed-point collection method is also convenient for the staff to deal with the waste chips; through the setting of two arc-shaped scraping strips 66, the two arc-shaped scraping strips 66 can regularly scrape off the waste chips that have not fallen off the lifting seat 53 in time, so as to ensure the smoothness of the waste chip discharge channel; through the setting of two elastic rods 67, the two elastic rods 67 can regularly drive the telescopic connecting cover 62 to vibrate, so that the telescopic connecting cover 62 can shake off the waste chips attached to its inner wall, so as to avoid a lot of waste chips attached to the inner wall and affect its performance.

[0059] When the rotating seat 51 rotates, the drawer box 63 also rotates accordingly. Since the drawer box 63 deviates from the rotation center, the drawer box 63 and the counterweight block 72 inside it will generate a certain centrifugal force. The counterweight block 72 uses the centrifugal force to slide outward on the two slide bars 71, and the counterweight block 72 drives the two rotating frames 73 to move synchronously through the two gears 75. The gears 75 rotate by meshing with the rack 76 when moving outward. The two gears 75 respectively drive the two rotating frames 73 to rotate, so that the two rotating frames 73 can rotate while moving. When the rotating frame 73 moves, it drives multiple paddles 74 to move and rotate. The paddles 74 are elastically set. When moving and rotating, the multiple paddles 74 will evenly move the waste chips inside the drawer box 63 to avoid excessive accumulation of local waste chips. After the rotating seat 51 stops rotating, the counterweight block 7 2 is reset by the elastic force of the two reset springs. During this process, the two rotating frames 73 and the plurality of paddles 74 poke the waste chips again. After the waste chips in the drawer box 63 are evenly spread, it is convenient for the staff to observe the amount of waste chips in the drawer box 63 through the observation window, so as to clean it in time, avoiding the waste chips in the drawer box 63 from piling up too high at the position below the telescopic connection cover 62, while the height of the waste chips near the observation window is relatively low, thereby affecting the staff's judgment on the amount of waste chips. Through the arrangement of the paving part 7, when the rotating seat 51 starts to rotate and stops rotating, the plurality of paddles 74 can poke the waste chips in the drawer box 63 by moving and rotating, avoiding the local waste chips from piling up too high, improving the uniformity of the waste chips piling up, and facilitating the staff to observe the amount of waste chips. At the same time, it is also possible to avoid the local waste chips from piling up too high and affecting the smoothness of the waste chips falling channel.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A triple eccentric butterfly valve grinding device, comprising a base (1) and a mounting frame (3) above the base, characterized in that: A turntable (2) is mounted on the base (1); Also included is a grinding assembly (4) for grinding operations; A clamping assembly (5) for clamping a workpiece; A collecting component (6) for collecting waste chips; The grinding assembly (4) comprises a movable seat (41), the movable seat (41) being slidably mounted on the mounting frame (3), the movable seat (41) being slidably connected to a slider (42), the slider (42) being connected to a telescopic cylinder (43), the output end of the telescopic cylinder (43) being connected to a machine base (44), the output end of the machine base (44) being connected to a grinding head (45), and the outer wall of the machine base (44) being connected to a tool (46) via a bracket; The clamping assembly (5) comprises a rotating seat (51), the rotating seat (51) is rotatably mounted on the turntable (2), the top surface of the rotating seat (51) is slidably connected to a sliding seat (52), the top surface of the sliding seat (52) is hinged to a lifting seat (53), the top surface of the lifting seat (53) is connected to a clamping seat (54), and four claw blocks (59) are slidably mounted through the top surface of the clamping seat (54); A driving device is provided inside the turntable (2), the driving device of the turntable (2) is connected to the turntable (51), a hydraulic cylinder (55) is installed on the inner wall of the turntable (51), a connecting piece (56) is slidably connected to the bottom surface of the lifting seat (53), and the connecting piece (56) is hinged to the output end of the hydraulic cylinder (55); The bottom surface of the slide seat (52) is connected to a slot block (57), and an inclined slot is provided on the slot block (57). The output end of the hydraulic cylinder (55) is connected to a sliding shaft (58) via a bracket, and the sliding shaft (58) is slidably connected to the inclined slot of the slot block (57).

2. A triple eccentric butterfly valve grinding device according to claim 1, characterized in that: The four claw blocks (59) are arranged in a circular array with the center of the clamping seat (54) as the center, and the bottoms of the two claw blocks (59) located on both sides of the hinged part of the sliding seat (52) and the lifting seat (53) are respectively connected to the nut seats (510), and the inner wall of the clamping seat (54) is penetrated by a bidirectional screw rod (513) that is rotatably connected, and the bidirectional screw rod (513) is provided with two thread grooves in opposite directions, and the two thread grooves of the bidirectional screw rod (513) are respectively threadedly connected to the two nut seats (510), and the two ends of the bidirectional screw rod (513) are respectively provided with hand wheels.

3. A triple eccentric butterfly valve grinding device according to claim 2, characterized in that: A rotating ring (511) is rotatably connected to the inner wall of the top of the clamping seat (54), and four curved arms (512) are hinged on the rotating ring (511). The four curved arms (512) are arranged in a circular array with the center of the rotating ring (511) as the center, and one end of the four curved arms (512) away from the rotating ring (511) is hinged to the bottom of four claw blocks (59) respectively.

4. A triple eccentric butterfly valve grinding device according to claim 3, characterized in that: The collecting assembly (6) comprises a fixed box (61), the fixed box (61) being mounted on the inner wall of the rotating seat (51), the inner wall of the fixed box (61) being slidably connected with a pull-out box (63), the pull-out box (63) being provided with a handle and an observation window, the lifting seat (53) being provided with a discharge port, ramps being provided around the discharge port of the lifting seat (53), the inner wall of the discharge port of the lifting seat (53) being connected with a telescopic connection cover (62), the end of the telescopic connection cover (62) away from the lifting seat (53) being connected to the top of the fixed box (61), and the bottom end of the telescopic connection cover (62) being located above the pull-out box (63).

5. A triple eccentric butterfly valve grinding device according to claim 4, characterized in that: The clamping seat (54) is provided with a plurality of leakage grooves, a bevel gear rod (65) is rotatably mounted on the lifting seat (53), the outer wall of the bidirectional screw rod (513) is connected with a bevel gear ring (64), the bevel gear ring (64) is meshed with the bevel gear rod (65), and the outer wall of the bevel gear rod (65) is connected with two arc-shaped scraping strips (66), and the arc-shaped scraping strips (66) contact the top surface of the lifting seat (53) when moving.

6. A triple eccentric butterfly valve grinding device according to claim 5, characterized in that: The outer walls on both sides of the telescopic connection cover (62) are respectively connected to elastic rods (67), and a plurality of spring plates are connected between the elastic rods (67) and the telescopic connection cover (62). The outer walls on both sides of the slot block (57) are connected to two connecting rods (69), and the connecting rods (69) are connected to sawtooth rods (68). When the two sawtooth rods (68) move, they respectively contact the two elastic rods (67).

7. A triple eccentric butterfly valve grinding device according to claim 6, characterized in that: The collecting assembly (6) further comprises a spreading part (7), wherein the spreading part (7) comprises two sliding rods (71), wherein the two sliding rods (71) are both mounted on the inner wall of the drawer box (63), wherein a counterweight block (72) is slidably connected to the two sliding rods (71), wherein two return springs are connected between the counterweight block (72) and the inner wall of the drawer box (63), wherein the bottom of the counterweight block (72) is rotatably connected to two gears (75), wherein the bottom of the gear (75) is connected to a rotating frame (73), wherein the bottom surface of the rotating frame (73) is connected to a plurality of paddles (74), and wherein the inner wall of the drawer box (63) is connected to two racks (76), wherein the two racks (76) are respectively located on the side of the two sliding rods (71) away from each other, and wherein the two racks (76) are respectively meshed with the two gears (75).

8. A grinding method for a triple eccentric butterfly valve, characterized in that: The triple eccentric butterfly valve grinding device according to any one of claims 1 to 7 further comprises the following steps: Step 1: Loading: Place the valve body on the clamping seat (54) using a sling, rotate the bidirectional screw rod (513), and the four claw blocks (59) clamp the valve body firmly; Step 2: Check before starting the machine, set the movement parameters of the grinding assembly (4), check the quality of the tool (46) and the grinding head (45), and replace the tool (46) and the grinding head (45) that do not meet the requirements in time; Step 3: grinding the valve body, starting the driving device in the turntable (2), causing the clamping seat (54) to drive the valve body to rotate, and grinding the valve body using the tool (46) during the rotation; Step 4: grinding the valve seat, starting the hydraulic cylinder (55) to lift the lifting seat (53) and the clamping seat (54), so that the valve body is tilted and rotated, and the sealing surface of the valve seat is ground by the tool (46), and then the sealing surface is polished by the grinding head (45); Step 5: Completion inspection: After processing, the grinding surface of the valve body is inspected for size and surface flatness; Step 6: Shutdown for maintenance. After shutdown, clean the waste chips in the clamping seat (54), the claw block (59) and the drawer box (63), and check and maintain the tool (46) and the grinding head (45).

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