Polishing device for welding port of boiler pipeline

Abstract

The boiler pipeline welding port polishing device comprises a workbench, a machining table is arranged at the position, close to the middle point, of the upper end face of the workbench, fixing bases are fixedly arranged on the two sides of the upper end face of the machining table correspondingly, polishing mechanisms are installed on the opposite sides of the two fixing bases correspondingly, and a movable cavity is formed in the upper end face of the machining table; a movable groove is formed in the middle point of the bottom end face in the movable cavity, a movable seat is slidably embedded into the movable groove, a movable groove is formed in the upper end face of the movable seat, a movable block is slidably embedded into the movable groove, and auxiliary clamping mechanisms are arranged on the upper end face of the movable block and the upper end face of the movable seat. The device has the advantages of being high in working efficiency and easy to operate.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline processing and relates to a boiler pipeline welding port grinding device. Background Art

[0002] Pipes are widely used in various industries, especially in the boiler field. When welding pipes, there are burrs at the pipe ports after cutting, or there is rust at the pipe ports due to long-term non-use. When welding pipes, it is necessary to grind the burrs or rust at the ports to improve the firmness of pipe welding. The welding ports of boiler pipes are the key parts used to connect different pipe sections in the boiler system; these welding ports are usually used to connect pipes, valves, instruments and other equipment to ensure that the heat exchange fluid flows efficiently and leak-free in the boiler system. In order to ensure the flatness and smoothness of the weld, a grinding device is often used to grind and polish the welded joints, while removing possible welding slag, oxides and other undesirable substances to improve the quality of the welded joints.

[0003] At present, the existing grinding device usually includes a workbench, a positioning component installed on the upper end of the workbench for clamping and installing the pipe, and a grinder for grinding the pipe port. When in use, the pipe needs to be placed and clamped on the positioning component, and then the grinder is started and gradually approaches the pipe port to perform the grinding process; however, when grinding the pipe port, since the pipe includes two ports, it is necessary to first grind one port and then disassemble it for secondary installation after turning, and then complete the grinding of the other port. This seriously delays work efficiency and is cumbersome and inconvenient to operate. At the same time, due to the mismatch between the height position of the positioning component after clamping the pipe and the grinder, it is often necessary to repeatedly adjust the height for accurate positioning, which affects the work efficiency of the workers to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to overcome the disadvantages of the prior art and provide a boiler pipe welding port grinding device, which has the characteristics of high working efficiency and simple operation.

[0005] To achieve the above-mentioned purpose, the present invention discloses a boiler pipe welding port grinding device, comprising a workbench, a processing table is arranged at a position close to the midpoint of the upper end surface of the workbench, fixed seats are fixedly arranged on both sides of the upper end surface of the processing table, and grinding mechanisms are installed on the opposite sides of the two fixed seats, an active cavity is opened on the upper end surface of the processing table, a active groove is opened at the midpoint of the bottom end surface inside the active cavity, a movable seat is slidably embedded in the movable groove, a movable groove is opened on the upper end surface of the movable seat, a movable block is slidably embedded in the movable groove, and auxiliary clamping mechanisms are arranged on the upper end surface of the movable block and the upper end surface of the movable seat.

[0006] Further, the grinding mechanism includes three arc blocks, three No. 1 grinding blocks, a rotating disk, three slide plates, three connecting columns, a rotating disk and three No. 2 grinding blocks, a column rod is fixedly arranged at the midpoint of the side of the rotating disk, and three arc grooves are opened on the side of the rotating disk, wherein the rotating disk includes a No. 1 disk and a No. 2 disk, and three sliding grooves are opened through the outer wall of the No. 1 disk;

[0007] Disc No. 1 is connected to disc No. 2, and an annular groove is formed between disc No. 1 and disc No. 2. The rotating disc is rotatably arranged in the fixed seat through the annular groove. Three slides are respectively slidably penetrated in the three sliding grooves. The three slides are respectively arranged at the lower ends of the three arc blocks. The outer surfaces of the three arc blocks are respectively fixedly connected to the inner walls of the three No. 1 grinding blocks. The three No. 2 grinding blocks are respectively arranged on the outer walls of the three No. 1 grinding blocks. One ends of the three connecting columns are respectively connected to the three slides, and the other ends of the three connecting columns are slidably embedded in the three arc grooves.

[0008] Furthermore, the three sliding grooves are distributed in sequence along the circumferential direction.

[0009] Furthermore, the three arc-shaped grooves are distributed in sequence along the circumferential direction.

[0010] Further, the auxiliary clamping mechanism includes a No. 1 annular disk, three fixing columns, three connecting rods, three connecting blocks, a No. 2 annular disk, three extrusion blocks, three inner rods, three linkage columns, an adjustment rod, a No. 1 mounting block, a back plate, a No. 2 mounting block and a linkage block, and a track groove is provided at a position of the upper midpoint of the front end surface of the back plate;

[0011] The No. 2 mounting block is fixedly arranged on the back plate, the No. 1 mounting block is arranged on the side of the No. 2 mounting block away from the back plate, the linkage block is slidably embedded in the track groove, one end of the adjustment rod is rotatably arranged in the No. 1 mounting block, the other end of the adjustment rod is threadedly penetrated through the linkage block, the No. 1 annular disk is rotatably arranged on the back plate, the No. 1 annular disk is fixedly connected to the linkage block, and the No. 1 annular disk is fixedly connected to the No. 2 annular disk through three connecting blocks;

[0012] The three linkage columns are distributed in sequence along the circumferential direction, the midpoints of the three connecting rods are rotatably sleeved with the three linkage columns, one ends of the three connecting rods are rotatably sleeved with the three fixed columns respectively, and the other ends of the three connecting rods are sleeved with extrusion blocks through inner rods.

[0013] Furthermore, the three fixing columns are evenly distributed along the circumferential direction with the center point of the first annular disk as the central axis.

[0014] Furthermore, receiving boxes are fixedly arranged on both sides of the upper end surface of the processing table, a screw is rotatably arranged in the movable groove, a micro motor is arranged on the outer wall of the processing table, the end of the screw passes through the processing table and is connected to the output end of the micro motor, and the screw is threadedly sleeved with the movable block.

[0015] Furthermore, a driving rod is rotatably arranged in the movable groove, the driving rod is a threaded rod, the lower end of the movable seat is threadedly sleeved with the driving rod, and legs are fixedly arranged on both sides of the lower end surface of the workbench.

[0016] Furthermore, servo motors are arranged on the two fixing seats, and a linkage gear is sleeved on the output end of the servo motor, and the linkage gear is meshed with the second disc.

[0017] The boiler pipe welding port grinding device of the present invention comprises a workbench, a processing table is arranged at the midpoint of the upper end surface of the workbench, fixed seats are fixedly arranged on both sides of the upper end surface of the processing table, and grinding mechanisms are installed on the opposite sides of the two fixed seats, a movable cavity is opened on the upper end surface of the processing table, a movable groove is opened at the midpoint of the bottom end surface of the movable cavity, a movable seat is slidably embedded in the movable groove, a movable groove is opened on the upper end surface of the movable seat, a movable block is slidably embedded in the movable groove, and auxiliary clamping mechanisms are arranged on the upper end surface of the movable block and the upper end surface of the movable seat;

[0018] The pipeline is clamped and fixed by an auxiliary clamping mechanism, and two ends of the pipeline are polished respectively by two polishing mechanisms.

[0019] The present invention has the following beneficial effects:

[0020] During specific operation, the boiler pipe welding port grinding device described in the present invention utilizes two auxiliary clamping mechanisms to quickly clamp and fix pipes of different specifications, thereby completing the auxiliary clamping and fixing effect of pipes of different thicknesses and lengths, and can achieve the alignment clamping effect of the central axis during the fixing process, and can better and faster complete the auxiliary positioning of the central axis of the pipe during the clamping process; at the same time, by arranging a grinding mechanism at both sides of the upper end of the processing table, the port grinding operation at one end can be quickly completed after the auxiliary clamping and fixing of the pipe is completed, and the grinding process of the port at the other end of the pipe can be quickly realized without secondary disassembly and installation, the structure is simple, the process is faster, more labor-saving and convenient, and the grinding mechanism can simultaneously complete the double grinding effect of the inner wall and the side of the port, and the grinding effect is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the axial side of the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the structure at A;

[0024] Figure 3 It is a structural schematic diagram of the auxiliary clamping mechanism of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the grinding mechanism of the present invention;

[0026] Figure 5 Another structural schematic diagram of the grinding structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the exploded structure of the grinding mechanism of the present invention.

[0028] Among them, 1 is a processing table, 2 is a grinding mechanism, 3 is a moving seat, 4 is a moving groove, 5 is an auxiliary clamping mechanism, 6 is a workbench, 7 is a movable cavity, 8 is a fixed seat, 9 is a servo motor, 10 is a driving rod, 11 is a support leg, 12 is a movable groove, 13 is a micro motor, 14 is a screw, 15 is a moving block, 16 is an annular groove, 17 is a sliding groove, 201 is an arc block, 202 is a grinding block No. 1, 203 is a rotating disk, 20301 is a No. 1 disk, 20302 is a No. 2 disk, 20 4 is a slide plate, 205 is a connecting column, 206 is an arc groove, 207 is a turntable, 208 is a grinding block No. 2, 209 is a column rod, 501 is an annular disk No. 1, 502 is a fixed column, 503 is a connecting rod, 504 is a connecting block, 505 is an annular disk No. 2, 506 is an extrusion block, 507 is an inner rod, 508 is a linkage column, 509 is an adjusting rod, 5010 is a mounting block No. 1, 5011 is a back plate, 5012 is a mounting block No. 2, 5013 is a linkage block, and 5014 is a track groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0032] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0033] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0034] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] refer to Figures 1 to 6 The boiler pipe welding port grinding device described in the present invention includes a workbench 6, a processing table 1 is arranged on the upper surface of the workbench 6, fixed seats 8 are arranged on both sides of the upper end surface of the processing table 1, and grinding mechanisms 2 are installed on the opposite sides of the two fixed seats 8, a movable cavity 7 is opened on the upper end surface of the processing table 1, a movable groove 12 is opened at the midpoint of the bottom end surface inside the movable cavity 7, a movable seat 3 is slidably embedded in the movable groove 12, a movable groove 4 is opened at the midpoint of the upper end surface of the movable seat 3, a movable block 15 is slidably embedded in the movable groove 4, and an auxiliary clamping mechanism 5 is fixedly arranged on the upper end surface of the movable block 15 and the upper end surface of the movable seat 3.

[0038] Specifically, in the above embodiment, by installing two grinding mechanisms 2 on both sides of the upper end of the processing table 1, after the installation of the boiler pipeline is completed, the grinding mechanisms 2 on both sides can be used to grind the ports at both ends of the pipeline respectively, so that there is no need to disassemble the conversion end for a second time and then install and fix it to complete the grinding operation; and the moving seat 3 is slidably set in the movable groove 12 and two auxiliary clamping mechanisms 5 are installed on the moving seat 3, so that the moving seat 3 can synchronously drive the auxiliary clamping mechanism 5 to move during the movement process, thereby completing the linkage translation operation of the auxiliary clamping mechanism 5 clamping and fixing the boiler pipeline.

[0039] Reference Figure 1 , 2 A receiving box is fixedly provided on both sides of the upper end surface of the processing table 1, a screw 14 is rotatably provided in the movable groove 4, a micro motor 13 is fixedly provided on one side of the outer wall of the processing table 1, the end of the screw 14 passes through the processing table 1 and is fixedly connected to the output end of the micro motor 13, and the screw 14 is threadedly sleeved with the moving block 15; a driving rod 10 is rotatably provided in the movable groove 12, the driving rod 10 is a threaded rod, the lower end of the moving seat 3 is threadedly sleeved with the driving rod 10, and legs 11 are fixedly provided on both sides of the lower end surface of the workbench 6.

[0040] Specifically, in the above embodiment, when the micro motor 13 is started, the micro motor 13 drives the screw 14 to rotate, and during the rotation of the screw 14, the moving block 15 connected to the outer thread sleeve is caused to move laterally, thereby realizing the lateral displacement of one of the auxiliary clamping mechanisms 5 connected to the upper end of the moving block 15, so as to complete the distance adjustment operation between the two auxiliary clamping mechanisms 5; when the driving rod 10 is rotated, due to the threaded rod structure it adopts, it drives the moving seat 3 connected to the outer thread sleeve to move laterally when rotating, so as to realize the synchronous displacement of multiple components installed on the upper end of the entire moving seat 3.

[0041] refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 The grinding mechanism 2 includes three arc blocks 201, three No. 1 grinding blocks 202, a rotating disk 203, three slide plates 204, three connecting columns 205, a rotating disk 207 and three No. 2 grinding blocks 208. A column rod 209 is fixedly arranged at the midpoint of the side of the rotating disk 207, and three arc grooves 206 are opened on the side of the rotating disk 207. Among them, the rotating disk 203 includes a No. 1 disk 20301 and a No. 2 disk 20302. Three sliding grooves 17 are opened through the outer wall of the No. 1 disk 20301; a servo motor 9 is fixedly arranged on one side of the two fixed seats 8, and a linkage gear is sleeved on the output end of the servo motor 9. The linkage gear is meshed with the No. 2 disk 20302, and the No. 1 disk 20301 and the No. 2 disk 20302 are fixedly connected, and the No. 1 disk 2 An annular groove 16 is provided between the No. 0301 and the No. 2 disc 20302, and the rotating disc 203 is rotatably provided in the fixed seat 8 through the annular groove 16. The three slide plates 204 are respectively slidably penetrated in the three sliding grooves 17, and the three slide plates 204 are respectively fixedly provided on the three arc blocks 201, and the outer surfaces of the three arc blocks 201 are respectively fixedly connected with the inner walls of the three No. 1 grinding blocks 202, and the three No. 2 grinding blocks 208 are respectively fixedly provided on the outer circumferential surfaces of the three No. 1 grinding blocks 202, and one ends of the three connecting columns 205 are respectively connected with the three slide plates 204, and the other ends of the three connecting columns 205 are slidably embedded in the three arc grooves 206. The three sliding grooves 17 and the three arc grooves 206 are all arranged around the center point of the rotating disc 207 in an equidistant circle.

[0042] Specifically, in the above embodiment, the column 209 is rotated to make it rotate, and the column 209 is used to drive the turntable 207 to rotate synchronously. During the rotation of the turntable 207, the arc groove 206 will push the corresponding connecting column 205 to rotate. Since one end of the connecting column 205 is slidably set in the arc groove 206, and the other end of the connecting column 205 is fixedly connected to the slide plate 204, the slide plate 204 can only slide up and down in the sliding groove 17, and the slide plate 204 is fixedly connected to the first grinding block 202, that is, when the slide plate 204 moves up and down, it will be accompanied by the first grinding block 202 Expanding outward synchronously, the No. 2 grinding block 208 located on the No. 1 grinding block 202 expands outward synchronously therewith; in the process of completing the outward expansion, the No. 1 grinding block 202 will continuously approach the inner wall of the pipe until it contacts the inner wall of the pipe, and at the same time, the outer No. 2 grinding block 208 will contact the side of the pipe port, and then the servo motor 9 is started to drive the linkage gear at the output end to rotate. Since the No. 2 disc 20302 is a gear disc structure, the outer teeth of the disc are engaged with the teeth of the linkage gear, that is, after starting the servo motor 9, the entire grinding mechanism 2 is driven to rotate to complete the port grinding operation of the pipe.

[0043] refer to Figure 1 and Figure 3 The auxiliary clamping mechanism 5 includes a first annular disk 501, three fixing columns 502, three connecting rods 503, three connecting blocks 504, a second annular disk 505, three extrusion blocks 506, three inner rods 507, three linkage columns 508, an adjusting rod 509, a first mounting block 5010, a back plate 5011, a second mounting block 5012 and a linkage block 5013. A track groove 5014 is provided on the side of the back plate 5011 near the midpoint of the upper end; the second mounting block 5012 is fixedly arranged on the back plate 5011 On the side, the No. 1 mounting block 5010 is arranged on the side of the No. 2 mounting block 5012 away from the back plate 5011, the linkage block 5013 is slidably embedded in the track groove 5014, one end of the adjusting rod 509 is rotatably arranged in the No. 1 mounting block 5010, and the other end of the adjusting rod 509 is threadedly penetrated through the linkage block 5013, the No. 1 annular disk 501 is rotatably arranged on the back plate 5011 and fixedly connected to the linkage block 5013, and the No. 1 annular disk 501 is fixedly connected to the No. 2 annular disk 505 through three connecting blocks 504.

[0044] The three linkage columns 508 are arranged in a circular shape with equal intervals between the No. 1 annular disk 501 and the No. 2 annular disk 505. The midpoints of the three connecting rods 503 are rotatably sleeved with the three linkage columns 508. One ends of the three connecting rods 503 are rotatably sleeved with the three fixed columns 502 respectively. The other ends of the three connecting rods 503 are sleeved with the extrusion blocks 506 through the inner rods 507. The three fixed columns 502 are circumferentially arranged on the side of the No. 1 annular disk 501.

[0045] Specifically, in the above embodiment, when the boiler pipe is placed inside the auxiliary clamping mechanism 5, the adjusting rod 509 is rotated to make it rotate inside the No. 1 mounting block 5010, and the adjusting rod 509 drives the linkage block 5013 with the outer thread sleeve to move horizontally during the rotation. Since the linkage block 5013 is composed of a round rod and a threaded block, the threaded block is threadedly sleeved on the outside of the adjusting rod 509, and the round rod is slidably arranged in the track groove 5014, the round rod and the threaded block are in a rotating connection structure, and the round rod is fixedly connected to the outer wall of the No. 1 annular disk 501. At this time, during the lateral movement of the threaded block, the round rod is synchronously displaced and drives the No. 1 annular disk 501 to rotate a certain distance. During the rotation of 501, the second annular disk 505 will rotate synchronously with it. When the first annular disk 501 and the second annular disk 505 rotate synchronously, the inner linkage column 508 also rotates, so that the linkage column 508 pushes the outer sleeve connecting rod 503 to move during the rotation, thereby realizing the rotation movement of the connecting rod 503 along the fixed column 502 as the rotation point, thereby driving the extrusion block 506 at the other end to generate an extrusion force on the outer wall of the pipe during the rotation of the connecting rod 503 to complete the extrusion and clamping effect, and using three connecting rods 503 with the annular disk as the center to perform synchronous rotation and extrusion, while completing the clamping and fixing, the center line of the pipe and the center line of the annular disk are aligned and clamped.

[0046] At the same time, since the center line of the annular disk and the center line of the grinding mechanism 2 are at the same horizontal height, the use effect of the head and tail center lines being the same center line is achieved.

[0047] The specific use process of the present invention is:

[0048] When in use, the boiler pipe to be polished is placed in the two auxiliary clamping mechanisms 5. Since one of the auxiliary clamping mechanisms 5 is located on the moving block 15, the moving block 15 can be laterally displaced under the drive of the screw 14, thereby changing the distance between the other auxiliary clamping mechanism 5 and the other auxiliary clamping mechanism 5; after the placement of the pipe is completed, the adjusting rod 509 of the auxiliary clamping mechanism 5 is rotated to drive the linkage block 5013 to move to realize the rotation of the No. 1 annular disk 501 and the No. 2 annular disk 505, and thereby promote the three connecting rods 503 and the extrusion block 506 used for central extrusion clamping to squeeze and clamp the outer wall of the pipe to achieve a fixing effect; after the extrusion and clamping of the outer pipe, the driving rod 10 is used to drive the entire moving seat 3 to move horizontally, and the horizontal movement method is selected as needed to realize that the two ends of the pipe enter the corresponding fixed seats 8 on both sides, and then the servo motor 9 is used to drive the polishing mechanism 2 in the fixed seat 8 to polish the port of the pipe.

[0049] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0050] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A boiler pipe welding port grinding device, characterized in that: The invention comprises a workbench (6), a processing table (1) is arranged at a position close to the midpoint of the upper end surface of the workbench (6), fixed seats (8) are fixedly arranged on both sides of the upper end surface of the processing table (1), and a grinding mechanism (2) is installed on the opposite sides of the two fixed seats (8), a movable cavity (7) is opened on the upper end surface of the processing table (1), a movable groove (12) is opened at the midpoint of the bottom end surface inside the movable cavity (7), a movable seat (3) is slidably embedded in the movable groove (12), a movable groove (4) is opened on the upper end surface of the movable seat (3), a movable block (15) is slidably embedded in the movable groove (4), and an auxiliary clamping mechanism (5) is arranged on the upper end surface of the movable block (15) and the upper end surface of the movable seat (3).

2. The boiler pipe welding port grinding device according to claim 1 is characterized in that: The grinding mechanism (2) comprises three arc blocks (201), three No. 1 grinding blocks (202), a rotating disk (203), three slide plates (204), three connecting pillars (205), a rotating disk (207) and three No. 2 grinding blocks (208); a pillar rod (209) is fixedly arranged at the midpoint of the side of the rotating disk (207); three arc grooves (206) are opened on the side of the rotating disk (207); wherein the rotating disk (203) comprises a No. 1 circular disk (20301) and a No. 2 circular disk (20302); and three sliding grooves (17) are opened through the outer wall of the No. 1 circular disk (20301); The first disc (20301) is connected to the second disc (20302), and an annular groove (16) is formed between the first disc (20301) and the second disc (20302). The rotating disc (203) is rotatably arranged in the fixed seat (8) through the annular groove (16). The three slide plates (204) are respectively slidably penetrated in the three sliding grooves (17). The three slide plates (204) are respectively arranged at the lower ends of the three arc blocks (201). The outer surfaces of the three arc blocks (201) are respectively fixedly connected to the inner walls of the three first grinding blocks (202). The three second grinding blocks (208) are respectively arranged on the outer walls of the three first grinding blocks (202). One ends of the three connecting columns (205) are respectively connected to the three slide plates (204), and the other ends of the three connecting columns (205) are slidably embedded in the three arc grooves (206).

3. The boiler pipe welding port grinding device according to claim 2 is characterized in that: The three sliding grooves (17) are distributed in sequence along the circumferential direction.

4. The boiler pipe welding port grinding device according to claim 2, characterized in that: The three arc-shaped grooves (206) are distributed in sequence along the circumferential direction.

5. The boiler pipe welding port grinding device according to claim 1, characterized in that: The auxiliary clamping mechanism (5) comprises a first annular disk (501), three fixing columns (502), three connecting rods (503), three connecting blocks (504), a second annular disk (505), three extrusion blocks (506), three inner rods (507), three linkage columns (508), an adjusting rod (509), a first mounting block (5010), a back plate (5011), a second mounting block (5012) and a linkage block (5013); a track groove (5014) is provided at a position close to the midpoint of the upper end of the front end surface of the back plate (5011); The second mounting block (5012) is fixedly arranged on the back plate (5011), the first mounting block (5010) is arranged on the side of the second mounting block (5012) away from the back plate (5011), the linkage block (5013) is slidably embedded in the track groove (5014), one end of the adjustment rod (509) is rotatably arranged in the first mounting block (5010), the other end of the adjustment rod (509) is threadedly penetrated through the linkage block (5013), the first annular disk (501) is rotatably arranged on the back plate (5011), the first annular disk (501) is fixedly connected to the linkage block (5013), and the first annular disk (501) is fixedly connected to the second annular disk (505) through three connection blocks (504); The three linkage columns (508) are sequentially distributed along the circumferential direction, the midpoints of the three connecting rods (503) are rotatably sleeved with the three linkage columns (508), one ends of the three connecting rods (503) are rotatably sleeved with the three fixed columns (502) respectively, and the other ends of the three connecting rods (503) are sleeved with the extrusion blocks (506) through the inner rods (507).

6. The boiler pipe welding port grinding device according to claim 5, characterized in that: The three fixing columns (502) are evenly distributed along the circumferential direction with the center point of the first annular disk (501) as the central axis.

7. The boiler pipe welding port grinding device according to claim 1, characterized in that: A receiving box is fixedly arranged on both sides of the upper end surface of the processing table (1), a screw rod (14) is rotatably arranged in the movable groove (4), a micro motor (13) is arranged on the outer wall of the processing table (1), the end of the screw rod (14) passes through the processing table (1) and is connected to the output end of the micro motor (13), and the screw rod (14) is threadedly sleeved with the movable block (15).

8. The boiler pipe welding port grinding device according to claim 1, characterized in that: A driving rod (10) is rotatably arranged in the movable groove (12); the driving rod (10) is a threaded rod; the lower end of the movable seat (3) is threadedly sleeved with the driving rod (10); and legs (11) are fixedly arranged on both sides of the lower end surface of the workbench (6).

9. The boiler pipe welding port grinding device according to claim 2, characterized in that: A servo motor (9) is disposed on each of the two fixing seats (8), and a linkage gear is sleeved on the output end of the servo motor (9), and the linkage gear is meshed with the second disc (20302).

10. A boiler pipe welding port grinding device, characterized in that: The invention comprises a workbench (6), a processing table (1) is arranged at a position close to the midpoint of the upper end surface of the workbench (6), fixed seats (8) are fixedly arranged on both sides of the upper end surface of the processing table (1), and a grinding mechanism (2) is installed on the opposite sides of the two fixed seats (8), a movable cavity (7) is opened on the upper end surface of the processing table (1), a movable groove (12) is opened at the midpoint of the bottom end surface inside the movable cavity (7), a movable seat (3) is slidably embedded in the movable groove (12), a movable groove (4) is opened on the upper end surface of the movable seat (3), a movable block (15) is slidably embedded in the movable groove (4), and an auxiliary clamping mechanism (5) is arranged on the upper end surface of the movable block (15) and the upper end surface of the movable seat (3); The pipeline is clamped and fixed by the auxiliary clamping mechanism (5), and the two ends of the pipeline are respectively polished by the two polishing mechanisms (2).

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