Corrosion-resistant metal pipe fitting processing device

Abstract

This invention discloses a corrosion-resistant metal pipe processing device, belonging to the technical field of metal pipe grinding and processing equipment. It includes a support frame, with two sets of centering clamping components mounted on the top of the worktable. A telescopic grinding component corresponding to the center of the centering clamping components is mounted on one of the support plates. The centering clamping components include a positioning cylinder fixed to the worktable and centering clamps evenly distributed along the positioning cylinder. The telescopic grinding component includes a telescopically adjustable support cylinder, a rotating cylinder rotatably mounted at one end of the support cylinder, and grinding arc blocks symmetrically inserted into both ends of the rotating cylinder. A cleaning component is mounted at the other end of the support cylinder, comprising a suction hose inserted into the bottom of the support cylinder and a waste box connected to the lower end of the suction hose. This invention features automatic centering of the pipe clamping, coaxiality between the grinding mechanism and the pipe without repeated adjustments, adaptability to various pipe diameters, and synchronous negative pressure chip collection during grinding to improve cleaning efficiency, effectively improving processing quality and efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of metal pipe grinding and processing equipment, and particularly relates to a corrosion-resistant metal pipe processing device. Background Technology

[0002] Corrosion-resistant metal pipe fittings, with their excellent resistance to acids, alkalis, and salt corrosion, are widely used in pipeline systems for transporting fluids and powders in various industries such as water supply and drainage, gas transmission, petrochemicals, fine chemicals, food and pharmaceuticals, and seawater desalination. They are core components for media transmission under corrosive conditions. Before leaving the factory and during installation, the inner wall of corrosion-resistant metal pipe fittings must undergo fine grinding and polishing to eliminate any unevenness and obtain a smooth inner surface. A smooth surface helps reduce energy consumption during media transport and improves media flow efficiency.

[0003] To address this issue, Chinese Patent CN223289462U discloses an automatic processing device for metal pipe fittings. This device primarily addresses the limitation of existing automatic processing equipment in polishing and grinding the inner walls of metal pipe fittings of different diameters, thus restricting its applicability. The proposed solution includes a base and a metal pipe fitting. The base has a movable groove with ball bearings for assisting the movement of the metal pipe fitting. Vertical plates are symmetrically mounted on the top of the base, and a top plate connects the tops of the two vertical plates. This device enables automatic positioning, conveying, and grinding of the metal pipe fitting, and is suitable for grinding, positioning, and conveying metal pipe fittings of different diameters, thereby expanding its applicability and facilitating subsequent processing.

[0004] However, the aforementioned device, which adapts to inner walls of different pipe diameters by adjusting the distance between the two grinding arcs, requires that the center point between the grinding arcs be kept on the same circle as the metal pipe. After each change of pipe with a different pipe diameter, the device requires manual and repeated fine-tuning of the positions of the two vertical plates and the grinding mechanism to correct the coaxiality. The centering process is time-consuming and cumbersome, significantly reducing the overall processing efficiency of the pipe. At the same time, the metal shavings generated during the grinding process accumulate directly inside the pipe, which can easily scratch the smooth inner wall after polishing, making it impossible to guarantee the processing quality of corrosion-resistant pipes. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a corrosion-resistant metal pipe processing device, which features automatic pipe clamping and centering, constant coaxiality between the grinding mechanism and the pipe without repeated adjustments, adaptability to various pipe diameters, and synchronous negative pressure chip collection during grinding to improve cleaning efficiency. This effectively improves processing quality and efficiency, and solves the problems of existing pipe inner wall grinding equipment requiring repeated manual correction of the coaxiality of the grinding mechanism after changing workpieces, cumbersome operation, low processing efficiency, and easy scratching of the inner wall of the pipe by grinding debris.

[0006] This invention is implemented as follows: a corrosion-resistant metal pipe processing device includes a support frame, a worktable fixedly installed on the top of the support frame, and support plates fixedly connected to both ends of the support frame. Two sets of centering clamping components are installed on the top of the worktable. A telescopic grinding component corresponding to the center of the centering clamping component is installed on one of the support plates. The centering clamping component includes a positioning cylinder fixed on the worktable and centering clamps evenly distributed along the positioning cylinder, used for centering and clamping the outer wall of the metal pipe. The telescopic grinding component includes a telescopically adjustable support cylinder, a rotating cylinder rotatably installed at one end of the support cylinder, and grinding arc blocks slidably inserted into both ends of the rotating cylinder and symmetrically arranged therebetween. A cleaning component is installed at the other end of the support cylinder. The cleaning component includes a vacuum hose inserted into the bottom of the support cylinder and a waste box connected to the lower end of the vacuum hose.

[0007] As a preferred embodiment of the present invention, a fixing frame is fixedly connected to the bottom of the positioning cylinder, the fixing frame is fixedly connected to the worktable, a fixing ring plate is sleeved and fixed on the outer circumferential wall of the positioning cylinder, and a gear plate is connected to the inner side of the fixing ring plate through a bearing.

[0008] With this setup, the fixed ring plate provides rotational support for the gear disc, and when the gear disc rotates, it can simultaneously engage the gear rings of all the centering clamps, achieving synchronous forward and backward clamping of the three sets of centering clamps.

[0009] As a preferred embodiment of the present invention, the centering fixture is provided in three parts. The centering fixture includes a centering clamp block that is slidably inserted into the inner wall of the positioning cylinder, and a screw connected to the outer wall of the positioning cylinder via a bearing. A slide block is threaded onto the screw, and slide rods are fixed at both ends of the slide block. The ends of the slide rods slide through the interior of the positioning cylinder and are fixedly connected to the centering clamp block. The centering clamp blocks are distributed in a ring array at equal intervals. A rubber pad is fixedly connected to the inner side of the centering clamp block. A toothed ring is sleeved and fixed to the end side wall of the screw, and the toothed ring and the toothed disc are meshed together.

[0010] With this setup, the rotation of a single screw can be linked by the meshing of the gear ring and gear disc to rotate the other two screws synchronously, driving the three sets of centering clamps to converge towards the center of the pipe fitting. The clamping process automatically corrects the center of the pipe fitting, ensuring that the central axis of the pipe fitting is coaxial with the grinding mechanism, eliminating the need for repeated manual centering. The rubber pad increases the clamping friction while preventing the hard clamps from scratching the anti-corrosion surface of the pipe fitting.

[0011] As a preferred embodiment of the present invention, a rotary motor is fixedly installed at the bottom of the middle part of the fixing frame, and the end of the screw directly below the positioning cylinder is fixedly connected to the output end of the rotary motor.

[0012] With this setting, the forward and reverse rotation of the motor can uniformly control all centering blocks to clamp and release the workpiece, achieving high synchronous centering accuracy and facilitating the provision of driving force to the centering blocks.

[0013] As a preferred embodiment of the present invention, a telescopic cylinder is fixedly installed on the support plate, the output end of the telescopic cylinder is fixedly connected to the other end of the support cylinder, a first partition is fixedly connected inside the support cylinder, a grinding motor is fixedly installed on the right side of the first partition, the output end of the grinding motor is fixedly connected to the middle outer wall of the rotating cylinder, a dust suction channel is opened on the side wall of the support cylinder corresponding to the left side of the first partition, and the upper end of the dust suction hose is fixedly connected to the bottom side wall of the support cylinder.

[0014] With this setup, the telescopic cylinder can drive the entire set of grinding components to extend into the pipe, adapting to pipes of different lengths. The grinding motor drives the rotating drum and grinding arc block to rotate and complete the inner wall polishing. The metal shavings generated during grinding can enter the suction hose through the dust extraction channel, achieving simultaneous grinding and dust removal.

[0015] In a preferred embodiment of the present invention, a dust collection chamber is provided inside the left side of the workbench, the lower end of the dust collection hose is connected to the top of the dust collection chamber, a dust collection port is provided on the side wall of the dust collection chamber, a filter screen is fixedly installed on the dust collection port, a vacuum fan is fixedly installed inside the workbench, the dust collection end of the vacuum fan is fixedly connected to the dust collection port, and a waste box is slidably inserted into the dust collection chamber.

[0016] With this setup, the suction fan continuously generates negative pressure, drawing grinding debris into the dust collection chamber. The filter screen blocks the dust, and all waste falls into a pull-out waste box for easy centralized cleaning, preventing metal dust from scattering and contaminating pipes and equipment.

[0017] In a preferred embodiment of the present invention, a second partition is fixedly connected to the middle of the rotating drum, and a threaded rotating rod is connected between the second partition via a bearing. An adjusting square rod slides through both ends of the rotating drum. One end of the adjusting square rod is fixedly connected to the grinding arc block, and the other end of the adjusting square rod is threaded onto the threaded rotating rod. A driven gear is fixedly fitted into the middle of the threaded rotating rod. A stepper motor is fixedly installed on the inner side of the second partition, and a main gear is fixedly connected to the output end of the stepper motor. The main gear and the driven gear are meshed together.

[0018] With this setup, the stepper motor drives the threaded rotor to rotate via a gear pair, synchronously adjusting the expansion diameter of the grinding arc blocks on both sides to match corrosion-resistant pipe fittings with different inner diameters, thus expanding the equipment's applicable processing range.

[0019] As a preferred embodiment of the present invention, the two ends of the threaded rotating rod are respectively provided with positive and negative thread grooves, and the two adjusting square rods are threadedly sleeved on the corresponding positive and negative thread grooves. An anti-disengagement block is fixedly connected to the outer wall of the other end of the adjusting square rod.

[0020] With this setting, the positive and negative threads allow the grinding arc blocks on both sides to extend and retract synchronously and symmetrically, always keeping the grinding center coincident with the center of the pipe, eliminating the need for secondary correction. The anti-detachment block limits the maximum extension stroke of the adjusting square rod, preventing the component from detaching from the rotating drum.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses a geared disc to link three sets of annular centering blocks, which automatically achieves coaxial centering when clamping pipe fittings. When changing workpieces of different pipe diameters, there is no need to repeatedly correct the center of the grinding mechanism, simplifying operation and improving processing efficiency. The positive and negative threads inside the rotating drum synchronously drive the extension and retraction of the grinding arc block, which can be adapted to various inner diameter pipe fittings to achieve uniform polishing. The grinding operation is equipped with a negative pressure dust collection structure to collect metal debris in real time, avoiding dust scratching the anti-corrosion layer of the pipe fittings. The waste box has a pull-out design for easy cleaning. The invention has a high degree of automation, reduces the difficulty of manual operation, and effectively improves processing quality and efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a side view cross-sectional structural schematic diagram provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the centering clamping component structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the centering fixture structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the telescopic grinding component structure provided in an embodiment of the present invention; Figure 6 This is provided by the embodiments of the present invention. Figure 5 Front view sectional structural diagram; Figure 7 This is provided by the embodiments of the present invention. Figure 5 Schematic diagram of the cross-sectional structure on the right side; Figure 8 This is a schematic diagram of the adjusting rod structure provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the waste box structure provided in an embodiment of the present invention.

[0023] In the diagram: 1. Support frame; 101. Support plate; 2. Workbench; 201. Dust collection chamber; 202. Dust collection port; 3. Centering clamp; 300. Positioning cylinder; 301. Fixing frame; 302. Fixing ring plate; 303. Gear disc; 4. Telescopic grinding component; 400. Support cylinder; 401. Dust collection channel; 402. First partition; 403. Grinding motor; 404. Telescopic cylinder; 5. Centering clamp; 500. Screw 501. Gear ring; 502. Rotary motor; 503. Slide block; 504. Slide rod; 505. Centering clamp; 506. Rubber pad; 6. Rotary drum; 601. Second partition; 602. Stepper motor; 603. Main gear; 7. Threaded rotating rod; 701. Driven gear; 702. Adjusting square rod; 703. Grinding arc block; 704. Anti-detachment block; 8. Dust suction hose; 801. Waste box; 802. Fan. Detailed Implementation

[0024] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0025] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] refer to Figures 1 to 9 As shown in the figure, an embodiment of the present invention provides a corrosion-resistant metal pipe processing device, including a support frame 1. A workbench 2 is fixedly installed on the top of the support frame 1. Support plates 101 are fixedly connected to both ends of the support frame 1. Two sets of centering clamping parts 3 are installed on the top of the workbench 2. A telescopic grinding part 4 corresponding to the center of the centering clamping part 3 is installed on one of the support plates 101. The centering clamping part 3 includes a positioning cylinder 300 fixed on the workbench 2 and centering clamps 5 evenly distributed along the positioning cylinder 300, used to center and clamp the outer wall of the metal pipe. The telescopic grinding part 4 includes a telescopically adjustable support cylinder 400, a rotating cylinder 6 rotatably installed at one end of the support cylinder 400, and grinding arc blocks 703 slidably inserted into both ends of the rotating cylinder 6 and symmetrically arranged between them. A cleaning part is installed at the other end of the support cylinder 400. The cleaning part includes a dust suction hose 8 inserted into the bottom of the support cylinder 400 and a waste box 801 connected to the lower end of the dust suction hose 8.

[0027] Specifically, a fixing frame 301 is fixedly connected to the bottom of the positioning cylinder 300, the fixing frame 301 is fixedly connected to the worktable 2, a fixing ring plate 302 is sleeved and fixed on the outer circumference of the positioning cylinder 300, and a gear plate 303 is connected to the inner side of the fixing ring plate 302 through a bearing.

[0028] Using the above scheme, the fixed ring plate 302 provides rotational support for the gear disk 303. When the gear disk 303 rotates, it can simultaneously mesh with the gear rings 501 of all the centering clamps 5, so as to realize the synchronous advance and retreat clamping of the three sets of centering clamps 505.

[0029] Specifically, the centering clamp 5 is provided in three parts. The centering clamp 5 includes a centering clamp block 505 that is slidably inserted into the inner wall of the positioning cylinder 300, and a screw 500 connected to the outer wall of the positioning cylinder 300 through a bearing. A slide seat 503 is threaded onto the screw 500. A slide rod 504 is fixed at both ends of the slide seat 503. The end of the slide rod 504 slides through into the interior of the positioning cylinder 300 and is fixedly connected to the centering clamp block 505. The centering clamp blocks 505 are distributed in a ring array at equal intervals. A rubber pad 506 is fixedly connected to the inner side of the centering clamp block 505. A toothed ring 501 is sleeved and fixed to the end side wall of the screw 500. The toothed ring 501 and the toothed disc 303 are meshed and connected.

[0030] Using the above scheme, the rotation of a single screw 500 can be linked by the meshing of the gear ring 501 and the gear disc 303 to rotate the other two screws 500 synchronously, driving the three sets of centering clamps 505 to converge synchronously towards the center of the pipe fitting. The clamping process automatically corrects the center of the pipe fitting, ensuring that the central axis of the pipe fitting is coaxial with the grinding mechanism, eliminating the need for repeated manual centering. The rubber pad 506 increases the clamping friction and at the same time prevents the hard clamps from scratching the anti-corrosion surface of the pipe fitting.

[0031] Specifically, a rotary motor 502 is fixedly installed at the bottom of the middle part of the fixing frame 301, and the end of the screw 500 directly below the positioning cylinder 300 is fixedly connected to the output end of the rotary motor 502.

[0032] Using the above scheme, the forward and reverse rotation of the motor can uniformly control all centering clamps 505 to clamp and release the workpiece, with high synchronous centering accuracy, which facilitates providing driving force to the centering clamps 505.

[0033] Specifically, a telescopic cylinder 404 is fixedly installed on the support plate 101. The output end of the telescopic cylinder 404 is fixedly connected to the other end of the support cylinder 400. A first partition 402 is fixedly connected inside the support cylinder 400. A grinding motor 403 is fixedly installed on the right side of the first partition 402. The output end of the grinding motor 403 is fixedly connected to the middle outer wall of the rotating cylinder 6. A dust suction channel 401 is opened on the side wall of the support cylinder 400 corresponding to the left side of the first partition 402. The upper end of the dust suction hose 8 is fixedly connected to the bottom side wall of the support cylinder 400.

[0034] Using the above solution, the telescopic cylinder 404 can drive the entire set of grinding parts to extend into the inside of the pipe, adapting to pipes of different lengths. The grinding motor 403 drives the rotating drum 6 and the grinding arc block 703 to rotate and complete the inner wall polishing. The metal shavings generated by grinding can enter the vacuum hose 8 through the dust suction channel 401, realizing the simultaneous grinding and dust removal.

[0035] Specifically, a dust collection chamber 201 is provided inside the left side of the workbench 2. The lower end of the dust collection hose 8 is connected to the top of the dust collection chamber 201. A dust collection port 202 is provided on the side wall of the dust collection chamber 201. A filter screen is fixedly installed on the dust collection port 202. A vacuum fan 802 is fixedly installed inside the workbench 2. The dust collection end of the vacuum fan 802 is fixedly connected to the dust collection port 202. A waste box 801 is slidably inserted into the dust collection chamber 201.

[0036] Using the above solution, the suction fan 802 continuously generates negative pressure, sucking the grinding debris into the dust collection chamber 201. The filter screen blocks the dust, and all the waste falls into the pull-out waste box 801 for easy centralized cleaning, preventing metal dust from drifting and contaminating the pipes and equipment.

[0037] Specifically, a second partition plate 601 is fixedly connected to the middle of the rotating drum 6, and a threaded rotating rod 7 is connected between the second partition plates 601 via bearings. Adjusting square rods 702 slide through both ends of the rotating drum 6. One end of the adjusting square rod 702 is fixedly connected to the grinding arc block 703, and the other end of the adjusting square rod 702 is threaded onto the threaded rotating rod 7. A driven gear 701 is fixedly sleeved in the middle of the threaded rotating rod 7. A stepper motor 602 is fixedly installed on the inner side of the second partition plate 601, and a main gear 603 is fixedly connected to the output end of the stepper motor 602. The main gear 603 and the driven gear 701 are meshed together.

[0038] Using the above scheme, the stepper motor 602 drives the threaded rotating rod 7 to rotate through the gear pair, and synchronously adjusts the expansion diameter of the grinding arc blocks 703 on both sides to match corrosion-resistant pipes with different inner diameters, thereby expanding the applicable processing range of the equipment.

[0039] Specifically, the two ends of the threaded rotating rod 7 are respectively provided with positive and negative thread grooves, and the two adjusting square rods 702 are threadedly sleeved on the corresponding positive and negative thread grooves. The outer wall of the other end of the adjusting square rod 702 is fixedly connected with an anti-detachment block 704.

[0040] Using the above scheme, the positive and negative threads allow the grinding arc blocks 703 on both sides to extend and retract synchronously and symmetrically, always keeping the grinding center coincident with the center of the pipe fitting, without the need for secondary correction. The anti-detachment block 704 limits the maximum extension stroke of the adjusting square rod 702 to prevent the component from detaching from the rotating drum 6.

[0041] Working principle of the invention: In use, the metal pipe to be processed is inserted into the two sets of positioning cylinders 300 and positioned on the centering clamp 505 directly below. The rotary motor 502 is started, driving one of the screws 500 to rotate. Through the gear ring 501 meshing with the gear disc 303, the other two screws 500 are driven to rotate synchronously. The slide block 503 pushes the slide rod 504 to make the three sets of centering clamps 505 synchronously retract towards the center of the pipe, automatically completing the centering and clamping of the outer wall of the pipe, ensuring that the central axis of the pipe is coaxial with the grinding mechanism. Subsequently, according to the inner diameter specification of the pipe, the stepper motor 602 is started. The stepper motor 602 drives the threaded rotating rod 7 to rotate through the main gear 603 and the driven gear 701, driving the two sides to adjust The square rod 702 extends outward synchronously, expanding the grinding arc block 703 to fit the inner wall of the pipe fitting; the grinding motor 403 and the suction fan 802 are turned on, and the telescopic cylinder 404 pushes the support cylinder 400 and the rotating cylinder 6 to extend into the pipe fitting as a whole. The grinding motor 403 drives the grinding arc block 703 to rotate at high speed to polish the inner wall of the pipe fitting. The metal chips generated by grinding are collected in the waste box 801 in the dust collection chamber 201 through the dust collection channel 401 and the dust collection hose 8 under the negative pressure of the suction fan 802. After the grinding of a single pipe fitting is completed, the telescopic cylinder 404 retracts the grinding assembly, the rotary motor 502 reverses to release the centering clamp 505, and the processed pipe fitting can be taken out to start the next round of processing.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant metal pipe fitting processing device, comprising a support frame (1), characterized in that: A workbench (2) is fixedly installed on the top of the support frame (1). Support plates (101) are fixedly connected to both ends of the support frame (1). Two sets of centering clamping parts (3) are installed on the top of the workbench (2). A telescopic grinding part (4) corresponding to the center of the centering clamping part (3) is installed on one of the support plates (101). The centering clamping part (3) includes a positioning cylinder (300) fixed on the workbench (2) and centering clamps evenly distributed along the positioning cylinder (300). 5) Used for centering and clamping the outer wall of metal pipe fittings, the telescopic grinding component (4) includes a telescopically adjustable support cylinder (400), a rotating cylinder (6) rotatably installed at one end of the support cylinder (400), and grinding arc blocks (703) slidably inserted into both ends of the rotating cylinder (6) and symmetrical between them. A cleaning component is installed at the other end of the support cylinder (400), the cleaning component includes a vacuum hose (8) inserted into the bottom of the support cylinder (400) and a waste box (801) connected to the lower end of the vacuum hose (8).

2. The corrosion-resistant metal pipe processing device as described in claim 1, characterized in that: The bottom of the positioning cylinder (300) is fixedly connected to a fixing frame (301), the fixing frame (301) is fixedly connected to the worktable (2), and a fixing ring plate (302) is sleeved and fixed on the outer circumference of the positioning cylinder (300). The inner side of the fixing ring plate (302) is connected to a gear plate (303) through a bearing.

3. The corrosion-resistant metal pipe fitting processing device as described in claim 2, characterized in that: The centering clamp (5) is provided in three parts. The centering clamp (5) includes a centering clamp block (505) that is slidably inserted into the inner wall of the positioning cylinder (300) and a screw (500) that is connected to the outer wall of the positioning cylinder (300) through a bearing. A slide block (503) is threaded onto the screw (500). A slide rod (504) is fixed at both ends of the slide block (503). The end of the slide rod (504) slides through into the interior of the positioning cylinder (300) and is fixedly connected to the centering clamp block (505). The centering clamp blocks (505) are arranged in a ring array with equal spacing. A rubber pad (506) is fixedly connected to the inner side of the centering clamp block (505). A toothed ring (501) is sleeved and fixed on the end side wall of the screw (500). The toothed ring (501) and the toothed disc (303) are meshed and connected.

4. The corrosion-resistant metal pipe processing device as described in claim 3, characterized in that: A rotary motor (502) is fixedly installed at the bottom of the middle part of the fixed frame (301), and the end of the screw (500) directly below the positioning cylinder (300) is fixedly connected to the output end of the rotary motor (502).

5. The corrosion-resistant metal pipe processing device as described in claim 1, characterized in that: A telescopic cylinder (404) is fixedly installed on the support plate (101). The output end of the telescopic cylinder (404) is fixedly connected to the other end of the support cylinder (400). A first partition (402) is fixedly connected inside the support cylinder (400). A grinding motor (403) is fixedly installed on the right side of the first partition (402). The output end of the grinding motor (403) is fixedly connected to the middle outer wall of the rotating drum (6). A dust suction channel (401) is opened on the side wall of the support cylinder (400) corresponding to the left side of the first partition (402). The upper end of the dust suction hose (8) is fixedly connected to the bottom side wall of the support cylinder (400).

6. The corrosion-resistant metal pipe processing device as described in claim 1, characterized in that: A dust collection chamber (201) is provided inside the left side of the workbench (2). The lower end of the dust collection hose (8) is connected to the top of the dust collection chamber (201). A dust collection port (202) is provided on the side wall of the dust collection chamber (201). A filter screen is fixedly installed on the dust collection port (202). A vacuum fan (802) is fixedly installed inside the workbench (2). The dust collection end of the vacuum fan (802) is fixedly connected to the dust collection port (202). A waste box (801) is slidably inserted into the dust collection chamber (201).

7. The corrosion-resistant metal pipe fitting processing device as described in claim 1, characterized in that: A second partition plate (601) is fixedly connected to the middle of the rotating drum (6). A threaded rotating rod (7) is connected between the second partition plates (601) through a bearing. An adjusting square rod (702) slides through both ends of the rotating drum (6). One end of the adjusting square rod (702) is fixedly connected to the grinding arc block (703). The other end of the adjusting square rod (702) is threaded onto the threaded rotating rod (7). A driven gear (701) is fixedly sleeved in the middle of the threaded rotating rod (7). A stepper motor (602) is fixedly installed on the inner side of the second partition plate (601). A main gear (603) is fixedly connected to the output end of the stepper motor (602). The main gear (603) and the driven gear (701) are meshed together.

8. The corrosion-resistant metal pipe processing device as described in claim 7, characterized in that: The two ends of the threaded rotating rod (7) are respectively provided with positive and negative thread grooves, and the two adjusting square rods (702) are threaded onto the corresponding positive and negative thread grooves. The other end of the adjusting square rod (702) is fixedly connected with an anti-detachment block (704).

Images