CN110877030A - Surface rust removing device for metal spring - Google Patents
Surface rust removing device for metal spring Download PDFInfo
- Publication number
- CN110877030A CN110877030A CN201911207771.7A CN201911207771A CN110877030A CN 110877030 A CN110877030 A CN 110877030A CN 201911207771 A CN201911207771 A CN 201911207771A CN 110877030 A CN110877030 A CN 110877030A
- Authority
- CN
- China
- Prior art keywords
- wall
- fixing
- spring
- sides
- metal spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007787 solid Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B08B1/20—
-
- B08B1/32—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
Abstract
The invention discloses a surface rust removing device for a metal spring, which comprises a collecting box, wherein two sides of the outer wall of the bottom of the collecting box are respectively provided with four fixing legs, the outer wall of one side of the collecting box is provided with a drain outlet at the bottom, a drain pipe is welded in the drain outlet, two sides of the outer wall of the top of the collecting box are respectively provided with a rectangular opening, the inner walls of the two rectangular openings are respectively provided with a filter screen, two sides of the outer wall of the top of the collecting box are respectively provided with a fixing rod, and a supporting rod is arranged at the position, close to the middle, of the outer wall of one side of each fixing rod. The invention can increase the friction force between the fixing ring and the spring so as to improve the extension length of the spring, can prevent the inner wall and the middle of the spring from being difficult to clean and the rust removing effect of the device from being unobvious, and can prevent the spring from separating from the fixing clamp during extension to influence the work of the device or prevent the fallen spring from accidentally injuring personnel.
Description
Technical Field
The invention relates to the technical field of metal spring rust removal, in particular to a surface rust removal device for a metal spring.
Background
The spring is a mechanical part which utilizes elasticity to work, the part made of elastic material deforms under the action of external force, and is recovered after the external force is removed, and most of machinery needs to use the spring at work so as to slow down the vibration force generated during work.
Through retrieval, the patent with the Chinese patent authorization number of CN107740127A discloses a rust removing device for a spring, which comprises a transverse plate and the like; the device comprises a transverse plate, a lifting device, a net frame, a sewage discharge filtering device, a lifting frame, a frame body, a spring, a sewage discharge filtering device and a lifting device. The above patents suffer from the following disadvantages: 1. when the spring is derusted, rust on the inner wall of the spring is difficult to remove only through a deruster, so that the derusting effect of the device is not obvious; 2. when the spring is derusted, the spring is randomly shaken during derusting due to the elasticity of the spring, so that the device is difficult to derust and clean the spring; 3. when the spring is derusted, the spring needs to be fixed, but the surface of the spring is smooth, so the spring falls off the device.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a surface rust removing device for a metal spring.
In order to achieve the purpose, the invention adopts the following technical scheme:
a surface rust removing device for a metal spring comprises a collecting box, wherein two sides of the outer wall of the bottom of the collecting box are respectively provided with a fixed leg, the number of the fixed legs is four, a drain outlet is formed in the position, located at the bottom, of the outer wall of one side of the collecting box, a drain pipe is welded in the drain outlet, two sides of the outer wall of the top of the collecting box are respectively provided with a rectangular opening, the inner walls of the two rectangular openings are respectively provided with a filter screen, two sides of the outer wall of the top of the collecting box are respectively provided with a fixed rod, a supporting rod is arranged at the position, close to the middle, of the outer wall of one side of each fixed rod, one end, far away from the corresponding fixed rod, of the outer walls of the two supporting rods is hinged with cleaning plates, the outer walls of the two cleaning plates, opposite to the openings of the two, the utility model discloses a liquid storage tank, including roof, liquid storage tank, position, water tank, water inlet pipe, water tank, water inlet pipe, water outlet pipe, water tank, roof.
Furthermore, the position that the bottom outer wall of roof is located the centre is provided with electric telescopic handle, and electric telescopic handle's bottom outer wall bolt has solid fixed ring, and solid fixed ring's inner wall is provided with the equidistance and is the arch that the annular distributes.
Furthermore, the position that the top outer wall of collecting box is located the centre is opened flutedly, and the inner wall welding of recess has the bearing, and the inner wall of bearing rotates and is connected with the dwang.
Further, the outer wall of dwang is provided with fixed cover, and the both sides outer wall of fixed cover all is provided with the rotation leaf, and one side outer wall of rotation leaf is opened has the bolt hole.
Furthermore, two the position that one side outer wall of dead lever is close to the bottom all is provided with first hydraulic stem, and the one end that the dead lever was kept away from to the outer wall of two first hydraulic stems is provided with the fixed block, and open one side outer wall of fixed block has the round hole, and the inner wall bolt of round hole has the acting as go-between, and the anchor is kept away from between the one end of fixed block and the bolt hole to the acting as go-between.
Furthermore, the top outer wall of dwang is provided with the fixed plate, and the both sides outer wall of fixed plate is the quarter arc.
Furthermore, the position that the top outer wall of fixed plate is located the centre is opened there is the spout, and the equal sliding connection in both sides of spout bottom inner wall has the slider.
Further, two one side of slider top outer wall all articulates there is the fixation clamp, and the bottom outer wall of fixation clamp is provided with the kicking block that the equidistance distributes, and threaded hole is opened to one side outer wall of kicking block, and the inner wall threaded connection of threaded hole has fixing bolt.
Furthermore, two the top outer wall of slider all is provided with the backup pad, and the position that one side outer wall of two backup pads is close to top and bottom all is provided with the second hydraulic stem.
Furthermore, two the outer wall of one side of backup pad all is provided with the equidistance and is the lug that the annular distributes, and the outer wall of lug is provided with the burr that the equidistance distributes.
The invention has the beneficial effects that:
1. through electric telescopic handle, solid fixed ring and the arch that sets up for the device can make the spring vibration from top to bottom through the elasticity of spring and carry out preliminary rust cleaning treatment to the surface of spring, stretches the spring through electric telescopic handle, so that improve the range of vibration from top to bottom of spring, can increase the frictional force between solid fixed ring and the spring through the arch, so that improve the tensile length of spring.
2. Through backup pad, lug and the burr that sets up for the device can increase the frictional force between spring and the backup pad when supporting the spring, so that carry out the rust cleaning to the inner wall of spring and handle, can clear up the centre of spring through the burr, and the inner wall that prevents the spring is difficult to clear up the rust cleaning effect that leads to the device unobvious with the centre.
3. Through fixation clamp, fixing bolt and the kicking block that sets up, can increase the frictional force between spring and the fixation clamp to fix the spring, prevent that the spring from taking place to break away from the influence when tensile with the fixation clamp and causing the influence or the spring that drops to the work of device can cause the accidental injury to the personnel.
Drawings
FIG. 1 is a schematic cross-sectional view of a surface rust removal device for a metal spring according to the present invention;
FIG. 2 is a partially enlarged structural schematic view of a surface rust removing device for a metal spring according to the present invention;
FIG. 3 is a partial structural view of a surface rust removing apparatus for a metal spring according to the present invention;
FIG. 4 is a schematic structural view of a rotating blade of the surface rust removing device for a metal spring according to the present invention;
fig. 5 is a schematic structural diagram of a slider of the surface rust removing device for the metal spring according to the present invention.
In the figure: 1-a collecting box, 2-a slide block, 3-a blow-off pipe, 4-a first hydraulic rod, 5-a fixed rod, 6-a support rod, 7-a cleaning plate, 8-a liquid storage box, 9-a liquid inlet pipe, 10-a bulge, 11-a fixed ring, 12-an electric telescopic rod, 13-a water inlet pipe, 14-a water tank, 15-a high-pressure nozzle and 16-a support plate, 17-sliding chute, 18-fixed block, 19-fixed plate, 20-fixed sleeve, 21-rotating rod, 22-stay wire, 23-filter screen, 24-lug, 25-burr, 26-half arc block, 27-second hydraulic rod, 28-rotating blade, 29-bolting hole, 30-top block, 31-fixed bolt and 32-fixed clamp.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a surface rust removing device for a metal spring comprises a collecting box 1, wherein two sides of the outer wall of the bottom of the collecting box 1 are respectively connected with four fixing legs through bolts, a drain outlet is formed in the position, located at the bottom, of the outer wall of one side of the collecting box 1, a drain pipe 3 is welded inside the drain outlet, rectangular openings are formed in two sides of the outer wall of the top of the collecting box 1, filter screens 23 are connected to the inner walls of the two rectangular openings through bolts, fixing rods 5 are connected to two sides of the outer wall of the top of the collecting box 1 through bolts, supporting rods 6 are connected to the positions, close to the middle, of the outer walls of one sides of the two fixing rods 5 through bolts, cleaning plates 7 are hinged to the ends, far away from the fixing rods 5, of the outer walls of the two supporting rods 6, semi-arc blocks 26, the friction force between the outer wall of the spring and the cleaning plate 7 can be increased so as to clean the outer wall of the spring, the outer walls of the tops of the two fixing rods 5 are both connected with a top plate through bolts, one side of the outer wall of the bottom of the top plate is connected with a liquid storage tank 8 through bolts, liquid inlets are respectively formed in the middle position of the outer wall of the top of the liquid storage tank 8 and one side of the outer wall of the top plate, a liquid inlet pipe 9 is welded inside each liquid inlet, a sealing cover is connected with the outer wall of the top of each liquid inlet pipe 9 through a thread, a liquid outlet is formed in the middle position of the outer wall of one side of the liquid storage tank 8, a liquid outlet is welded on the inner wall of each liquid outlet, an atomizing nozzle is connected with the inner wall of the bottom of each liquid outlet through a thread, a water tank 14 is connected with, and the inner wall of the water inlet is welded with a water inlet pipe 13, the outer wall of one side of the water tank 14 is provided with an opening at the bottom, the inner wall of the water outlet is welded with a water outlet pipe, and the inner wall of the bottom of the water outlet pipe is connected with a high-pressure spray head 15 in a threaded manner.
Wherein, the position that the bottom outer wall of roof is located the centre has electric telescopic handle 12 through bolted connection, and electric telescopic handle 12's bottom outer wall bolt has solid fixed ring 11, and solid fixed ring 11's inner wall is provided with the arch 10 that the equidistance is the annular and distributes, can increase the frictional force between spring and the solid fixed ring 11 to in the extension length of improvement spring.
Wherein, the position that the top outer wall of collecting box 1 is located the centre is opened flutedly, and the inner wall welding of recess has the bearing, and the inner wall of bearing rotates and is connected with dwang 21.
Wherein, the outer wall of the rotating rod 21 is connected with the fixing sleeve 20 through a bolt, the outer walls of both sides of the fixing sleeve 20 are connected with the rotating blades 28 through bolts, and the outer wall of one side of the rotating blades 28 is provided with a bolt connecting hole 29.
Wherein, the position that the bottom is close to one side outer wall of two dead levers 5 all has first hydraulic stem 4 through bolted connection, and the one end that dead lever 5 was kept away from to the outer wall of two first hydraulic stems 4 has fixed block 18 through bolted connection, and the round hole has been opened to one side outer wall of fixed block 18, and the inner wall bolt joint of round hole has the stay wire 22, and the stay wire 22 is kept away from between one end of fixed block 18 and the bolt hole 29 and is bolted.
Wherein, there is fixed plate 19 the top outer wall of dwang 21 through bolted connection, and the both sides outer wall of fixed plate 19 is the quarter arc, can prevent that water stain from remaining on the surface of fixed plate 19.
Wherein, the top outer wall of fixed plate 19 is located the position in the middle and is opened there is spout 17, and the equal sliding connection in both sides of spout 17 bottom inner wall has slider 2.
Wherein, one side of 2 top outer walls of two sliders all articulates there is fixation clamp 32, and the bottom outer wall of fixation clamp 32 is provided with the kicking block 30 that the equidistance distributes, and threaded hole is opened to one side outer wall of kicking block 30, and the inner wall threaded connection of threaded hole has fixing bolt 31.
Wherein, the top outer wall of two sliders 2 all has backup pad 16 through bolted connection, and the position that one side outer wall of two backup pads 16 is close to top and bottom all has second hydraulic stem 27 through bolted connection.
Wherein, the outer wall of one side of two backup pads 16 all is provided with the equidistance and is the lug 24 that the annular distributes, can increase the frictional force between spring and the backup pad to in the iron rust of spring inner wall is got rid of to the spring, and the outer wall of lug 24 is provided with the burr 25 that the equidistance distributes, can carry out the rust cleaning to the middle gap of spring.
When the device is used, a spring to be derusted is sleeved on the supporting plates 16, the distance between the two supporting plates 16 is adjusted through the second hydraulic rod 27, the spring is fixed through the fixing clamp 32, the top block 30 can increase the friction force between the spring and the fixing clamp 32, after the fixation is completed, the top of the spring is sleeved inside the fixing ring 11, the friction force between the spring and the fixing ring 11 is increased through the protrusion 10 so as to improve the stretching length of the spring, a proper amount of derusting agent is injected into the liquid storage tank 8 through the liquid inlet pipe 9, the derusting agent is sprayed to the surface of the spring through the atomizing nozzle so as to react with iron rust, at the moment, the electric telescopic rod 12 can drive the spring to be lifted upwards, the spring can fall off after being stretched to a certain height, the spring vibrates up and down on the supporting plates 16, and the cleaning plates 7 and the semi-arc blocks 26 can perform preliminary derusting treatment on the spring through the elasticity of the spring, after preliminary rust cleaning is accomplished, unscrew fixing bolt 31, take off fixation clamp 32 from the spring, first hydraulic stem 4 can drive rotating vane 28 this moment and rotate, thereby drive backup pad 16 and rotate, carry out the rust cleaning through lug 24 and burr 25 to the inner wall of spring and handle, after the rust cleaning is accomplished, wash the spring after the rust cleaning through drain pipe and high pressure nozzle 15, so that wash the surface of spring, get rid of iron rust and rust remover, sewage can get into the inside of collecting box 1 through filter screen 23.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A surface rust removal device for a metal spring comprises a collection box (1) and is characterized in that two sides of the outer wall of the bottom of the collection box (1) are provided with four fixing legs, a drain outlet is formed in the position, located at the bottom, of the outer wall of one side of the collection box (1), a drain pipe (3) is welded inside the drain outlet, rectangular openings are formed in two sides of the outer wall of the top of the collection box (1), filter screens (23) are arranged on the inner walls of the two rectangular openings, fixing rods (5) are arranged on two sides of the outer wall of the top of the collection box (1), supporting rods (6) are arranged at positions, close to the middle, of the outer walls of one sides of the two fixing rods (5), cleaning plates (7) are hinged to one ends, far away from the fixing rods (5), of the outer walls of the two supporting rods (6), and semi-arc blocks (26) are distributed in an annular shape at equal intervals are arranged, the outer walls of the tops of the two fixing rods (5) are respectively provided with a top plate, one side of the outer wall of the bottom of the top plate is provided with a liquid storage tank (8), the outer wall of the top of the liquid storage tank (8) is positioned at the middle position, one side of the outer wall of the top plate is respectively provided with a liquid inlet, a liquid inlet pipe (9) is welded inside the liquid inlet, the outer wall of the top of the liquid inlet pipe (9) is in threaded connection with a sealing cover, the outer wall of one side of the outer wall of the liquid storage tank (8) is provided with a liquid outlet at the middle position, the inner wall of the liquid outlet is welded with a liquid outlet, the inner wall of the bottom of the liquid outlet is in threaded connection with an atomizing spray nozzle, the outer wall of the bottom of the top plate far away from the liquid storage tank (8) is provided with, the water tank is characterized in that an opening is formed in the position, located at the bottom, of the outer wall of one side of the water tank (14), a drain pipe is welded to the inner wall of the water outlet, and a high-pressure spray head (15) is connected to the inner wall of the bottom of the drain pipe in a threaded mode.
2. The surface rust removing device for the metal spring is characterized in that an electric telescopic rod (12) is arranged in the middle of the outer wall of the bottom of the top plate, a fixing ring (11) is bolted to the outer wall of the bottom of the electric telescopic rod (12), and protrusions (10) which are distributed in an annular shape at equal intervals are arranged on the inner wall of the fixing ring (11).
3. The surface rust removing device for the metal spring is characterized in that a groove is formed in the middle of the outer wall of the top of the collecting box (1), a bearing is welded to the inner wall of the groove, and a rotating rod (21) is rotatably connected to the inner wall of the bearing.
4. The surface rust removing device for the metal spring as claimed in claim 3, wherein the outer wall of the rotating rod (21) is provided with a fixing sleeve (20), the outer walls of both sides of the fixing sleeve (20) are provided with rotating blades (28), and the outer wall of one side of the rotating blade (28) is provided with a bolting hole (29).
5. The surface rust removing device for the metal spring is characterized in that the first hydraulic rods (4) are arranged at the positions, close to the bottom, of the outer walls of one sides of the two fixing rods (5), the fixing blocks (18) are arranged at the ends, far away from the fixing rods (5), of the outer walls of the two first hydraulic rods (4), circular holes are formed in the outer walls of one sides of the fixing blocks (18), pull wires (22) are bolted to the inner walls of the circular holes, and the ends, far away from the fixing blocks (18), of the pull wires (22) are bolted to the bolting holes (29).
6. The surface rust removing device for the metal spring as claimed in claim 3, wherein the top outer wall of the rotating rod (21) is provided with a fixing plate (19), and the outer walls of both sides of the fixing plate (19) are quarter arcs.
7. The surface rust removing device for the metal spring is characterized in that a sliding groove (17) is formed in the middle of the outer wall of the top of the fixing plate (19), and sliding blocks (2) are connected to two sides of the inner wall of the bottom of the sliding groove (17) in a sliding mode.
8. The surface rust removing device for the metal spring as claimed in claim 7, wherein one side of the outer wall of the top of each of the two sliding blocks (2) is hinged with a fixing clamp (32), the outer wall of the bottom of each fixing clamp (32) is provided with top blocks (30) which are distributed equidistantly, the outer wall of one side of each top block (30) is provided with a threaded hole, and the inner wall of each threaded hole is in threaded connection with a fixing bolt (31).
9. The surface rust removing device for the metal spring is characterized in that the outer walls of the tops of the two sliding blocks (2) are provided with supporting plates (16), and the outer walls of one side of the two supporting plates (16) are provided with second hydraulic rods (27) at positions close to the tops and the bottoms.
10. The surface rust removing device for the metal spring is characterized in that the outer walls of one sides of the two supporting plates (16) are provided with protruding blocks (24) which are distributed in an annular shape at equal intervals, and the outer walls of the protruding blocks (24) are provided with burrs (25) which are distributed at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207771.7A CN110877030A (en) | 2019-11-29 | 2019-11-29 | Surface rust removing device for metal spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911207771.7A CN110877030A (en) | 2019-11-29 | 2019-11-29 | Surface rust removing device for metal spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110877030A true CN110877030A (en) | 2020-03-13 |
Family
ID=69730325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911207771.7A Withdrawn CN110877030A (en) | 2019-11-29 | 2019-11-29 | Surface rust removing device for metal spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110877030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687153A (en) * | 2020-06-22 | 2020-09-22 | 方兆燕 | Wastewater treatment auxiliary equipment for avoiding equipment clamping caused by rust generated on tank wall |
| CN111872820A (en) * | 2020-07-29 | 2020-11-03 | 朱品淳 | Metal pipeline spiral portion rust cleaning device |
| CN114473795A (en) * | 2022-02-16 | 2022-05-13 | 浙江新鑫钢结构有限公司 | Anticorrosion and wear-resistant treatment system based on building steel member and technology thereof |
-
2019
- 2019-11-29 CN CN201911207771.7A patent/CN110877030A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111687153A (en) * | 2020-06-22 | 2020-09-22 | 方兆燕 | Wastewater treatment auxiliary equipment for avoiding equipment clamping caused by rust generated on tank wall |
| CN111687153B (en) * | 2020-06-22 | 2021-07-09 | 方兆燕 | Wastewater treatment auxiliary equipment for avoiding equipment clamping caused by rust generated on tank wall |
| CN111872820A (en) * | 2020-07-29 | 2020-11-03 | 朱品淳 | Metal pipeline spiral portion rust cleaning device |
| CN114473795A (en) * | 2022-02-16 | 2022-05-13 | 浙江新鑫钢结构有限公司 | Anticorrosion and wear-resistant treatment system based on building steel member and technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200313 |
|
| WW01 | Invention patent application withdrawn after publication |