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CN-121973108-A - Targeting sand blasting rust removal device for butt welding seam under large water supply pipeline hole

CN121973108ACN 121973108 ACN121973108 ACN 121973108ACN-121973108-A

Abstract

The invention discloses a targeting sand blasting rust removing device for butt welding seams under a large water supply pipeline hole, which relates to the technical field of sand blasting devices for pipeline rust removing and comprises a hard conveying pipe penetrating through the axis of a machine body. This butt welding seam targeting sandblast rust cleaning device under large-scale water supply pipeline hole scrapes the mechanism and scrapes the left drop of water and the coarse grit and the dust of adhesion on the drop of water on the pipeline welding face when the sandblast, make grit and dust peel off fast, promote dust, grit and rust to float in the air, do benefit to the air current that the fan produced and bring the particulate matter that floats into the guard shield and concentrate and collect, and filter air current and dust through straining a jar, grit and rust, adsorb straining a jar surface rust through adsorption mechanism, can carry out preliminary treatment to dust grit and rust when taking dust grit rust out water supply pipeline, prevent that water supply pipeline from appearing blocking, improve sandblast rust cleaning quality and efficiency.

Inventors

  • WANG JIANYUN

Assignees

  • 东莞市华鑫泰金属科技有限公司

Dates

Publication Date
20260505
Application Date
20260326

Claims (10)

  1. 1. The targeted sand blasting rust removing device for the butt welding seam under the large water supply pipeline hole is characterized by comprising a hard conveying pipe (2) penetrating through the axis of a machine body (1), wherein a rotary joint (8) capable of rotating and provided with a sealing element is arranged at the end part of the hard conveying pipe (2), sand blasting heads (10) for spraying gravel are connected to two sides of the rotary joint (8), an annular baffle plate (5) is fixedly welded to the outer side edge of the machine body (1), a hemispherical shield (4) is connected to the end part, close to the rotary joint (8), of the hard conveying pipe (2) through connecting rods (21) distributed in an annular mode, and the connecting rods (21) are connected with the hard conveying pipe (2); the outer side of the rotary joint (8) is welded with a connecting rod (7) for supporting the scraping mechanism (6), and the end part of the connecting rod (7) is provided with the scraping mechanism (6) for scraping off water drops and gravel on the pipeline welding surface; The round rod (16) is extruded by the inclined plane of the triangular block (11), the pull rod (18) is driven to slide, the scraping and conveying mechanism (6) is further driven to swing back and forth, water drops and gravel on the surface of a welding line of a water supply pipeline are scraped, dust gravel and rust are enabled to float in the air, and are collected and preprocessed and separated through the shield (4), the fan (23), the filter cylinder (25) and the adsorption mechanism (9), a large amount of dust gravel and rust are taken out of the water supply pipeline, and blockage of the water supply pipeline caused by detention is prevented.
  2. 2. The device for targeted sand blasting and rust removal of butt welds under large water supply pipeline holes according to claim 1, wherein the outside of the machine body (1) is provided with annular roller travelling components (3), the scraping and conveying mechanism (6) comprises a welding surface scraping plate (601) fixed at the end of a connecting rod (7) and used for scraping off water drops and gravel on the welding surface of the pipeline, a first rotating seat (604) is fixed on two sides of the connecting rod (7), sliding grooves (605) for sliding the sliding rotating seat (606) back and forth are formed in inner walls of two sides, close to the first rotating seat (604), of the connecting rod (7), and the sliding rotating seat (606) is located inside the sliding grooves (605).
  3. 3. The device for targeted sand blasting and rust removal of butt welding seams under a large water supply pipeline hole according to claim 2, wherein a sweeping brush rod (602) for sweeping off gravel is movably sleeved on the inner side of the first rotating seat (604), a second rotating seat (607) is fixed on one side, close to the connecting rod (7), of the sweeping brush rod (602), and a traction rod (603) for pushing the sweeping brush rod (602) to swing back and forth is movably connected between the second rotating seat (607) and the sliding rotating seat (606).
  4. 4. The device for targeted sand blasting and rust removing of butt welds under large water supply pipeline holes according to claim 3 is characterized in that two opposite sides of the sliding rotary seats (606) are connected with a pull rod (18) sliding inside the connecting rod (7), one end of the pull rod (18) close to the outer side of the connecting rod (7) is provided with an integrally formed round rod (16), the round rod (16) penetrates through one side of the connecting rod (7), the outer wall of the connecting rod (7) is provided with a strip-shaped groove (17) through which the round rod (16) slides, and a reset spring (19) for elastically resetting the pull rod (18) is arranged inside the connecting rod (7) below the pull rod (18).
  5. 5. The targeted sand blasting rust removing device for the butt welding seam under the large water supply pipeline hole is characterized in that triangular blocks (11) distributed in an annular mode are fixed on the outer wall, close to the inner side of a toothed ring (13), of a machine body (1), the round bars (16) are tightly attached to the edges of the triangular blocks (11), and the toothed ring (13) connected with the sand blasting head (10) is arranged on the surface, close to the sand blasting head (10), of the machine body (1); the inner wall of the machine body (1) close to the toothed ring (13) is provided with a rotary groove (26) which is in sliding sleeve connection with the toothed ring (13), and the toothed ring (13) rotates on the rotary groove (26) and drives the sand blasting head (10) to rotate.
  6. 6. The targeted sand blasting rust removing device for the butt weld under the large water supply pipeline hole is characterized in that one side of the toothed ring (13) is connected with a gear (12) in a meshed mode, a built-in groove is formed in the machine body (1), and a second motor (24) connected with the gear (12) through a coupling is arranged in the built-in groove.
  7. 7. The targeted sand blasting rust removing device for the butt welding seam under the large water supply pipeline hole is characterized in that a motor (15) is installed in the center of the end part of the hard conveying pipe (2), the output end of the motor (15) is connected with a transmission shaft (14) through a coupling, and a through hole for air flow is formed in one side of the shield (4).
  8. 8. A large water supply pipeline under-hole butt weld targeted sand blasting rust removing device is characterized in that a filter cartridge (25) for filtering dust and gravel is installed at the position of a through hole, the center of the filter cartridge (25) is connected with a transmission shaft (14) through a bearing, and a fan (23) for exhausting air flow is installed at one end of the transmission shaft (14) located outside a shield (4).
  9. 9. The device for targeted sand blasting and rust removal of butt welds under large-scale water supply pipeline holes according to claim 8, wherein the shield (4) is arranged below the filter cartridge (25), an ash collecting box (22) for collecting ash falling on the surface of the filter cartridge (25) is mounted on the inside of the shield through bolts, an adsorption mechanism (9) for scraping dust on the surface of the filter cartridge (25) and adsorbing rust is mounted on the outer side of the transmission shaft (14), and an access board (20) is mounted on the surface, close to the adsorption mechanism (9), of the shield (4).
  10. 10. The device for targeted sand blasting and rust removal of butt welds under large-scale water supply pipeline holes according to claim 9, wherein the adsorption mechanism (9) comprises a fixed cylinder (901) fixedly sleeved outside a transmission shaft (14), a movable shaft (903) is fixed on the outer side of the fixed cylinder (901), an adsorption scraping plate (904) for separating dust and rust is movably sleeved on the outer side of the movable shaft (903), and an inclined supporting spring (902) is connected between the fixed cylinder (901) and the adsorption scraping plate (904).

Description

Targeting sand blasting rust removal device for butt welding seam under large water supply pipeline hole Technical Field The invention relates to the technical field of sand blasting devices for pipeline rust removal, in particular to a targeted sand blasting rust removal device for butt welding seams under large water supply pipeline holes. Background The butt welding seam under the hole of the large-scale water supply pipeline is often rusted due to environmental factors, the service life and the safety of the pipeline are affected, targeted sand blasting and rust removal are an effective cleaning method, specific particles such as sand, steel balls and the like are sprayed at high pressure to directly act on the rusted surface, a rust layer and oxides are rapidly removed, and tiny particles generated in the sand blasting process can further polish the welding seam, so that the surface quality of the welding seam is improved; The prior art discloses CN223012888U and is used for the interior sand blasting rust cleaning device of pipeline, concretely relates to pipeline rust cleaning equipment technical field, including locating the sand blasting rifle in the fixed head, one side of fixed head is equipped with the rust cleaning post, and one side movable mounting of rust cleaning post has the movable column, the inside swing joint of movable column has two movable rods, and two movable rods extend to the outside one end of movable column and equal fixed mounting has the scraper blade. According to the sand blasting and rust removing device for the pipeline, in actual work, the first electric push rod pushes the driving block to descend, so that the two movable rods can move towards the outside of the movable column, the two scraping plates can be pushed to be in contact with the inner wall of the pipeline, when rust removal is completed, in the process of extracting the device from the pipeline, sand and rust falling into the pipeline can be brought out by the two scraping plates, the gear drives the toothed ring to rotate, and the positions of the two scraping plates can be adjusted, so that the rust and the sand falling into the pipeline can be cleaned conveniently; It is known from the above prior art that after sand blasting, dust gravel and rust must be carried out of the pipeline, the above scheme carries out the gravel and rust falling inside the pipeline through two scrapers, the scrapers are provided with two arc plates, the gravel and rust on the inner wall of the pipeline can be scraped out, but because the dust gravel and rust are mostly small solid particles, the dust gravel and rust are easy to carry by air flow, so that the dust gravel suspended in the air cannot be collected by the simple scrapers, meanwhile, residual water drops are formed on the inner wall of the water supply pipeline, the water drops adhere to the gravel and rust, the condition that the dust gravel and the rust are retained in the pipeline is generated, the pipeline is blocked, the sand blasting and rust removing effects are affected, and therefore, the device for targeted sand blasting and rust removing of the butt welding seam under the large water supply pipeline hole is provided. Disclosure of Invention The invention aims to provide a targeted sand blasting rust removing device for butt welding seams under a large water supply pipeline hole, which aims to solve the problems in the prior art. The invention provides a targeted sand blasting rust removing device for butt welding seams under a large water supply pipeline hole, which comprises a hard conveying pipe penetrating through the axis of a machine body, wherein the end part of the hard conveying pipe is provided with a rotary joint which can rotate and is provided with a sealing element, the two sides of the rotary joint are connected with sand blasting heads for spraying gravel, the outer side edge of the machine body is fixedly welded with an annular baffle plate, the end part of the hard conveying pipe, which is close to the rotary joint, is connected with a hemispherical shield through connecting rods distributed in an annular mode, and the connecting rods are connected with the hard conveying pipe; the outer side of the rotary joint is welded with a connecting rod for supporting the scraping mechanism, and the end part of the connecting rod is provided with the scraping mechanism for scraping water drops and gravel on the welding surface of the pipeline; The round bar is extruded by the triangle block inclined plane, drives the pull rod to slide, further enables the scraping mechanism to swing back and forth, scrapes off water drops and gravel on the surface of a welding line of the water supply pipeline, enables dust, gravel and rust to float in the air, collects and pretreats and separates the dust, the gravel and the rust through the shield, the fan, the filter cartridge and the adsorption mechanism, brings a large amount of dust, gravel and rust out of th