CN109623519B - Grinding device is used in steel pipe manufacturing process - Google Patents
Grinding device is used in steel pipe manufacturing process Download PDFInfo
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- CN109623519B CN109623519B CN201910067741.4A CN201910067741A CN109623519B CN 109623519 B CN109623519 B CN 109623519B CN 201910067741 A CN201910067741 A CN 201910067741A CN 109623519 B CN109623519 B CN 109623519B
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- Prior art keywords
- steel pipe
- grinding device
- rotating
- rod
- manufacturing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model provides a grinding device is used in steel pipe manufacturing, includes the base, establishes pushing mechanism on the base still include with pushing mechanism connects the poker rod, establish make mill on the dwang, establish the supporting seat of base upper surface, establish cavity in the supporting seat, establish drainage mechanism on the supporting seat, be used for the dust removal mechanism that the cavity removed dust, be used for driving the rotatory rotary mechanism of steel pipe. According to the invention, the drainage mechanism is arranged, so that dust generated in the polishing process flows to the cavity along with the airflow, and the dust is prevented from diffusing to the outside; the dust removing mechanism is arranged to filter dust in the airflow, so that the dust removing effect is good; through setting up to hold the mechanism, realized the cooling to the steel pipe, prevent that the steel pipe from warping, improved the precision of polishing.
Description
Technical Field
The invention relates to the technical field of industrial equipment, in particular to a polishing device for manufacturing and processing steel pipes.
Background
The steel pipe is a hollow long-strip round steel material, and is mainly widely used for industrial conveying pipelines, mechanical structural parts and the like in petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments and the like, and is also widely used for manufacturing mechanical parts and engineering structures because the steel pipe has the same bending strength and torsional strength and lighter weight, and is also commonly used for producing various conventional weapons, barrels, shells and the like. The steel pipe can be polished during production, a lot of dust can be generated during polishing of the steel pipe, and the generated dust needs to be cleaned, but the prior polishing machine, such as a stainless steel pipe polishing device disclosed in patent number CN206855154U, comprises a frame, a polishing mechanism and a rotating mechanism, wherein the polishing mechanism comprises a polishing block, one surface of the polishing block, which is in contact with the stainless steel pipe, is an arc surface, and the arc surface of the polishing block is provided with a knife; the rotating mechanism comprises a rotary table and a motor, the rotary table is rotatably connected to the rack, a belt is connected between one side of the rotary table and the motor, the middle of the other side of the rotary table is of a hollow structure, screw holes are formed in the radial direction of the rotary table, bolts are connected with the screw holes in a threaded mode, and through holes are formed in the other side of the rack. This grinding device realizes the automation of nonrust steel pipe and polishes comprehensively, has improved machining efficiency and precision of polishing, but dust removal effect is relatively poor.
Disclosure of Invention
The invention aims to provide a drilling device for drilling a steel pipe, and solves the problem that the existing steel pipe polishing device is poor in dust removal effect.
The technical solution of the invention is as follows: the utility model provides a grinding device is used in steel pipe manufacturing, includes the base, establishes pushing mechanism on the base still include with pushing mechanism connects the poker rod, establish make mill on the dwang, establish the supporting seat of base upper surface, establish cavity in the supporting seat, establish drainage mechanism on the supporting seat, be used for the dust removal mechanism that the cavity removed dust, be used for driving the rotatory rotary mechanism of steel pipe.
Preferably, the drainage mechanism includes the intake pipe, establishes the guide part of intake pipe air inlet, establish guide part one side is kept away from the head rod of intake pipe air inlet, establish first pivot pole, a plurality of interval on the head rod are established flabellum on the first pivot pole, establish the semicircle pipe, two of intake pipe gas outlet are established guide plate in the semicircle pipe, the semicircle pipe with form airflow channel between the cavity, two guide plates with eccentricity H has between the semicircle pipe.
Preferably, the guide part comprises an arc-shaped plate and a baffle arranged at one end of the arc-shaped plate far away from the air inlet of the air inlet pipe, and the connecting lines of the end parts of the fan blades on one side of the first rotating rod are positioned on the same straight line and point to the circle center of the circle where the arc-shaped section of the arc-shaped plate is positioned.
Preferably, one side of the supporting seat, which is close to the baffle, is provided with a supporting mechanism, the supporting mechanism comprises a circular groove, balls arranged on the inner wall of the circular groove at intervals, and a ventilation opening arranged between the adjacent balls, and a symmetry axis of the baffle passes through a midpoint of a connecting line of two end parts of the circular groove.
Preferably, the dust removal mechanism comprises a second connecting rod arranged in the cavity, a second rotating rod arranged on the second connecting rod, a plurality of storage parts arranged on the second rotating rod at intervals, and a linkage belt connected with the drainage mechanism and the second rotating rod.
Preferably, the receiving portion includes an inclined rod, a long receiving groove and a short receiving groove provided on the inclined rod, and a corrugated filter plate provided in the long receiving groove and the short receiving groove, and the inclination directions of the long receiving groove and the short receiving groove are opposite to each other.
Preferably, one side of the supporting seat is provided with a water outlet and a water inlet which are communicated with the cavity, and sealing plugs are respectively arranged in the water outlet and the water inlet.
Preferably, the poke rod comprises a rotating section connected with the pushing mechanism in a sliding manner, a transverse moving section connected with the rotating section, and a pressing section connected with the transverse moving section, and the axial axes of the rotating section and the pressing section are parallel.
Preferably, a return spring is arranged between the rotating section and the base.
Preferably, the rotating mechanism comprises a rubber plug, a rotating shaft connected with the rubber plug and a motor connected with the rotating shaft, and the rubber plug is of a round table shape.
The invention has the beneficial effects that:
according to the invention, the drainage mechanism is arranged, so that dust generated in the polishing process flows to the cavity along with the airflow, and the dust is prevented from diffusing to the outside; the dust removing mechanism is arranged to filter dust in the airflow, so that the dust removing effect is good; through setting up to hold the mechanism, realized the cooling to the steel pipe, prevent that the steel pipe from warping, improved the precision of polishing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the drainage mechanism and the dust removal mechanism;
FIG. 3 is an enlarged view at A;
FIG. 4 is a schematic view of a rotation mechanism;
FIG. 5 is an enlarged view of B;
in the figure: 1-base, 2-pushing mechanism, 3-poke rod, 3-1-rotating section, 3-2-transverse moving section, 3-3-pressing section, 4-polishing disk, 5-supporting base, 5-1-water outlet, 5-2-water inlet, 5-3-sealing plug, 6-cavity, 7-drainage mechanism, 7-1-air inlet pipe, 7-2-guiding part, 7-2-1-arc plate, 7-2-2-baffle, 7-3-first connecting rod, 7-4-first rotating rod, 7-5-fan blade, 7-6-semicircular pipe, 7-7-guide plate, 7-8-airflow channel, 8-dust removal mechanism, 8-1-second connecting rod, 8-2-second rotating rod, 8-3-containing part, 8-3-1-inclined rod, 8-3-2-long containing groove, 8-3-3-short containing groove, 8-3-4-wave filter plate, 8-4-linkage belt, 9-holding mechanism, 9-1-circular groove, 9-2-ball, 9-3-vent, 10-reset spring, 11-rotating mechanism, 11-1-rubber plug, 11-2-rotating shaft and 11-3-motor.
The invention is further illustrated by the following examples in connection with the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
In an embodiment, as shown in fig. 1, a polishing device for manufacturing and processing a steel pipe includes a base 1, a pushing mechanism 2 disposed on the base 1, where the pushing mechanism 2 is implemented by using a cylinder, and further includes a poke rod 3 connected to the pushing mechanism 2, a polishing disc 4 disposed on the poke rod 3, a support seat 5 disposed on the upper surface of the base 1, a cavity 6 disposed in the support seat 5, a drainage mechanism 7 disposed on the support seat 5, a dust removing mechanism 8 for removing dust from the cavity 6, and a rotating mechanism 11 for driving the steel pipe to rotate. One side of the supporting seat 5 is provided with a water outlet 5-1 and a water inlet 5-2 which are communicated with the cavity 6, sealing plugs 5-3 are respectively arranged in the water outlet 5-1 and the water inlet 5-2, the wave filter plate 8-3-4 can be cleaned by injecting water through the water inlet 5-2, and sewage can be discharged through the water outlet 5-1. The poke rod 3 comprises a rotating section 3-1 connected with the pushing mechanism 2 in a sliding mode, a transverse moving section 3-2 connected with the rotating section 3-1, and a pressing section 3-3 connected with the transverse moving section 3-2, and axial axes of the rotating section 3-1 and the pressing section 3-3 are parallel. A return spring 10 is arranged between the rotating section 3-1 and the base 1.
As shown in figure 2, the drainage mechanism 7 comprises an air inlet pipe 7-1, a guide part 7-2 arranged at an air inlet of the air inlet pipe 7-1, a first connecting rod 7-3 arranged at one side of the guide part 7-2 far away from the air inlet of the air inlet pipe 7-1, a first rotating rod 7-4 arranged on the first connecting rod 7-3, a plurality of fan blades 7-5 arranged on the first rotating rod 7-4 at intervals, a semicircular pipe 7-6 arranged at an air outlet of the air inlet pipe 7-1, and two guide plates 7-7 arranged in the semicircular pipe 7-6, wherein an air flow channel 7-8 is formed between the semicircular pipe 7-6 and a cavity 6, an eccentric distance H is arranged between the two guide plates 7-7 and the semicircular pipe 7-6, high-speed air flow generated in the grinding process of the steel pipe is guided by the guide part 7-2 to impact the fan blades 7-, the fan blade 7-5 drives the first rotating rod 7-4 to rotate, so that the second connecting rod 8-1 rotates, meanwhile, the fan blade 7-5 rotates to further blow the airflow into the semicircular pipe 7-6, and the two guide plates 7-7 change the direction of the airflow twice and then enter the cavity 6 through the airflow channel 7-8 to prevent dust from diffusing to the outside. The guide part 7-2 comprises an arc-shaped plate 7-2-1 and a baffle 7-2-2 which is arranged at one end of the arc-shaped plate 7-2-1 and is far away from an air inlet of the air inlet pipe 7-1, the baffle 7-2-2 is contacted with the polishing disc 4, a relatively closed space can be formed during polishing, so that air flow is guided to the arc-shaped plate 7-2-1, connecting lines of the end parts of a plurality of fan blades 7-5 on one side of the first rotating rod 7-4 are positioned on the same straight line and point to the circle center of a circle where an arc-shaped section of the arc-shaped plate 7-2-1 is positioned, and the fan blades 7-5 are ensured to.
As shown in fig. 1, 2 and 3, the dust removing mechanism 8 includes a second connecting rod 8-1 disposed in the cavity 6, a second rotating rod 8-2 disposed on the second connecting rod 8-1, a plurality of receiving portions 8-3 disposed on the second rotating rod 8-2 at intervals, and a linkage belt 8-4 connecting the drainage mechanism 7 and the second rotating rod 8-2. The containing part 8-3 comprises an inclined rod 8-3-1, a long containing groove 8-3-2 and a short containing groove 8-3-3 which are arranged on the inclined rod 8-3-1, and a wave filter plate 8-3-4 which is arranged in the long containing groove 8-3-2 and the short containing groove 8-3-3, the air flow can filter most of dust through the filtering of the wave filter plate 8-3-4, the inclination directions of the long containing groove 8-3-2 and the short containing groove 8-3-3 are opposite, and the arrangement can accelerate the rotation of the second connecting rod 8-1 and improve the dust removing effect.
As shown in FIG. 4, the rotating mechanism 11 comprises a rubber plug 11-1, a rotating shaft 11-2 connected with the rubber plug 11-1, and a motor 11-3 connected with the rotating shaft 11-2, wherein the rubber plug 11-1 is in a round table shape, the smaller diameter end of the rubber plug 11-1 faces the steel tube, and the larger diameter end of the rubber plug 11-1 is connected with the rotating shaft 11-2.
As shown in figures 1 and 5, one side of the supporting seat 5, which is close to the baffle 7-2-2, is provided with a supporting mechanism 9, the supporting mechanism 9 comprises a circular groove 9-1, balls 9-2 which are arranged on the inner wall of the circular groove 9-1 at intervals, and a vent 9-3 which is arranged between the adjacent balls 9-2, the symmetrical axis of the baffle 7-2-2 passes through the middle point of the connecting line of the two end parts of the circular groove 9-1, and after the air flow is dedusted by the dedusting mechanism 8, part of heat is blown to the steel pipe through the vent 9-3, so that the temperature of the steel pipe during grinding is reduced, the steel pipe is prevented from being deformed, and the grinding precision.
Claims (8)
1. The utility model provides a grinding device is used in steel pipe manufacturing, includes base (1), establishes pushing mechanism (2) on base (1), its characterized in that: the device is characterized by also comprising a poke rod (3) connected with the pushing mechanism (2), a polishing disc (4) arranged on the poke rod (3), a supporting seat (5) arranged on the upper surface of the base (1), a cavity (6) arranged in the supporting seat (5), a drainage mechanism (7) arranged on the supporting seat (5), a dust removal mechanism (8) used for removing dust from the cavity (6), and a rotating mechanism (11) used for driving the steel pipe to rotate; drainage mechanism (7) include intake pipe (7-1), establish guide part (7-2) of intake pipe (7-1) air inlet, establish guide part (7-2) one side is kept away from head rod (7-3) of intake pipe (7-1) air inlet, establish first pivot pole (7-4) on head rod (7-3), a plurality of intervals are established flabellum (7-5) on first pivot pole (7-4), establish semicircle pipe (7-6) of intake pipe (7-1) gas outlet, two establish guide plate (7-7) in semicircle pipe (7-6), semicircle pipe (7-6) with form air flow channel (7-8) between cavity (6), two guide plate (7-7) with the eccentricity has between semicircle pipe (7-6) H; the guide part (7-2) comprises an arc-shaped plate (7-2-1) and a baffle (7-2-2) arranged at one end of the arc-shaped plate (7-2-1) and far away from an air inlet of the air inlet pipe (7-1), and the end connecting lines of a plurality of fan blades (7-5) on one side of the first rotating rod (7-4) are positioned on the same straight line and point to the circle center of the circle where the arc-shaped section of the arc-shaped plate (7-2-1) is positioned.
2. The grinding device for manufacturing and processing the steel pipe according to claim 1, wherein: one side, close to the baffle (7-2-2), of the supporting seat (5) is provided with a supporting mechanism (9), the supporting mechanism (9) comprises circular grooves (9-1), balls (9-2) arranged on the inner walls of the circular grooves (9-1) at intervals, and ventilation openings (9-3) arranged between the adjacent balls (9-2), and the symmetry axis of the baffle (7-2-2) passes through the middle point of a connecting line of two end parts of the circular groove (9-1).
3. The grinding device for manufacturing and processing the steel pipe according to claim 1, wherein: dust removal mechanism (8) are including establishing second connecting rod (8-1) in cavity (6), establishing second dwang (8-2), a plurality of interval on second connecting rod (8-1) are established receiving portion (8-3), connection on second dwang (8-2) drainage mechanism (7) with linkage area (8-4) of second dwang (8-2).
4. The grinding device for manufacturing and processing the steel pipe according to claim 3, wherein: the accommodating part (8-3) comprises an inclined rod (8-3-1), a long accommodating groove (8-3-2) and a short accommodating groove (8-3-3) which are arranged on the inclined rod (8-3-1), and a wave filter plate (8-3-4) which is arranged in the long accommodating groove (8-3-2) and the short accommodating groove (8-3-3), wherein the inclination directions of the long accommodating groove (8-3-2) and the short accommodating groove (8-3-3) are opposite.
5. The grinding device for manufacturing and processing the steel pipe according to claim 1, wherein: a water outlet (5-1) and a water inlet (5-2) which are communicated with the cavity (6) are arranged on one side of the supporting seat (5), and sealing plugs (5-3) are respectively arranged in the water outlet (5-1) and the water inlet (5-2).
6. The grinding device for manufacturing and processing the steel pipe according to claim 1, wherein: the poke rod (3) comprises a rotating section (3-1) in sliding connection with the pushing mechanism (2), a transverse moving section (3-2) connected with the rotating section (3-1), and a pressing section (3-3) connected with the transverse moving section (3-2), wherein the axial axes of the rotating section (3-1) and the pressing section (3-3) are parallel.
7. The grinding device for manufacturing and processing the steel pipe according to claim 6, wherein: and a return spring (10) is arranged between the rotating section (3-1) and the base (1).
8. The grinding device for manufacturing and processing the steel pipe according to claim 1, wherein: the rotating mechanism (11) comprises a rubber plug (11-1), a rotating shaft (11-2) connected with the rubber plug (11-1) and a motor (11-3) connected with the rotating shaft (11-2), and the rubber plug (11-1) is of a round table shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067741.4A CN109623519B (en) | 2019-01-24 | 2019-01-24 | Grinding device is used in steel pipe manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067741.4A CN109623519B (en) | 2019-01-24 | 2019-01-24 | Grinding device is used in steel pipe manufacturing process |
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| Publication Number | Publication Date |
|---|---|
| CN109623519A CN109623519A (en) | 2019-04-16 |
| CN109623519B true CN109623519B (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910067741.4A Active CN109623519B (en) | 2019-01-24 | 2019-01-24 | Grinding device is used in steel pipe manufacturing process |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4220260A1 (en) * | 1992-06-23 | 1994-01-05 | Wolfgang Hoenig | Explosive dust exhauster for grinding machine - has spray nozzles with water supply in diffusor inlet region |
| US6896604B1 (en) * | 2004-04-27 | 2005-05-24 | Precision Concrete Cutting, Inc. | Handheld flush-cutting concrete saw having a dust abatement vacuum hood |
| CN204954580U (en) * | 2015-09-09 | 2016-01-13 | 嵊州市恒鑫金属制管有限公司 | High -efficient steel pipe rust cleaning polisher of portable |
| CN107627159A (en) * | 2017-09-25 | 2018-01-26 | 无锡智谷锐拓技术服务有限公司 | A kind of fast polishing sanding apparatus for machine-building |
| CN107662138A (en) * | 2017-10-30 | 2018-02-06 | 贵州润柏吉科技有限公司 | Lamp stand sanding apparatus |
| CN207757473U (en) * | 2017-12-11 | 2018-08-24 | 江西瑞鼎精密传动有限公司 | A kind of speed reducer precision component processing grinding device with dedusting function |
| CN207807449U (en) * | 2017-12-28 | 2018-09-04 | 青岛德意佳木业有限公司 | A kind of timber polishing dust removal device |
| CN108747627A (en) * | 2018-06-24 | 2018-11-06 | 蒲菊清 | A kind of tubing dust-protection type grinding device |
-
2019
- 2019-01-24 CN CN201910067741.4A patent/CN109623519B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4220260A1 (en) * | 1992-06-23 | 1994-01-05 | Wolfgang Hoenig | Explosive dust exhauster for grinding machine - has spray nozzles with water supply in diffusor inlet region |
| US6896604B1 (en) * | 2004-04-27 | 2005-05-24 | Precision Concrete Cutting, Inc. | Handheld flush-cutting concrete saw having a dust abatement vacuum hood |
| CN204954580U (en) * | 2015-09-09 | 2016-01-13 | 嵊州市恒鑫金属制管有限公司 | High -efficient steel pipe rust cleaning polisher of portable |
| CN107627159A (en) * | 2017-09-25 | 2018-01-26 | 无锡智谷锐拓技术服务有限公司 | A kind of fast polishing sanding apparatus for machine-building |
| CN107662138A (en) * | 2017-10-30 | 2018-02-06 | 贵州润柏吉科技有限公司 | Lamp stand sanding apparatus |
| CN207757473U (en) * | 2017-12-11 | 2018-08-24 | 江西瑞鼎精密传动有限公司 | A kind of speed reducer precision component processing grinding device with dedusting function |
| CN207807449U (en) * | 2017-12-28 | 2018-09-04 | 青岛德意佳木业有限公司 | A kind of timber polishing dust removal device |
| CN108747627A (en) * | 2018-06-24 | 2018-11-06 | 蒲菊清 | A kind of tubing dust-protection type grinding device |
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| CN109623519A (en) | 2019-04-16 |
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Effective date of registration: 20210601 Address after: 325000 Ou Bei Jie Dao He Tian Cun, Yongjia County, Wenzhou City, Zhejiang Province Applicant after: CHENGBO VALVE Co.,Ltd. WENZHOU Address before: Room 10, unit 1, No. 48b, Shangshang Road, Linghai City, Jinzhou City, Liaoning Province 121200 Applicant before: Wu Yuping |
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Effective date of registration: 20230705 Address after: North Head, No. 268, Lantian Xiaodou Street, Haibin Street, Longwan District, Wenzhou City, Zhejiang Province, 325000 (self declared) Patentee after: Zhejiang Chunyu Stainless Steel Co.,Ltd. Address before: 325000 Ou Bei Jie Dao He Tian Cun, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: CHENGBO VALVE CO.,LTD. WENZHOU |
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