CN203266439U - Eight-pipe inner wall shotblasting machine - Google Patents
Eight-pipe inner wall shotblasting machine Download PDFInfo
- Publication number
- CN203266439U CN203266439U CN 201320236546 CN201320236546U CN203266439U CN 203266439 U CN203266439 U CN 203266439U CN 201320236546 CN201320236546 CN 201320236546 CN 201320236546 U CN201320236546 U CN 201320236546U CN 203266439 U CN203266439 U CN 203266439U
- Authority
- CN
- China
- Prior art keywords
- elevator
- compressed air
- rotary screen
- utility
- cleaning chamber
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Chain Conveyers (AREA)
Abstract
The utility model provides an eight-pipe inner wall shotblasting machine. The eight-pipe inner wall shotblasting machine comprises a foundation, a shot blaster, two cleaning chambers, an elevator, a platform, a spiral separator, a spiral conveyor, an operation vehicle, a shotblasting vehicle, a slot supply device, a dust removal device, a rotary screen and an electric device, wherein the elevator and the separator are arranged on the platform, the cleaning chambers are made of steel plates in a welding manner, movable covers for loading and unloading steel pipes are arranged on the top of the cleaning chamber and are interlocked with the shot blaster, the dust removal device is arranged at the upper end of the shot blaster, the shot blaster is arranged in the foundation, an inner spiral sheet and an outer spiral sheet are respectively arranged inside and outside the rotary screen, the electric device comprises a master control cabinet panel and a control button box, and switch buttons are arranged on the master control cabinet panels and the control button box. The eight-pipe inner wall shotblasting machine is suitable for large-batch assembly line work, can be used for improving the labor productivity and reducing the cost and is convenient and safe to use and easy to maintain.
Description
Technical field
The utility model relates to a kind of machine for cleaning inner wall of steel tube, particularly, relates to a kind of eight inside pipe wall compressed air shotblasting machines.
Background technology
In recent years, along with the development growth of the industry such as China's oil, natural gas and oil, the effect of natural gas in national economy are more next important, brought opportunity for the development of pipeline transportation industry, the quality requirement to the required steel pipe of pipeline transportation is more and more higher simultaneously.Steel pipe inner wall was cleared up by artificial forms such as sandblasts the requirement that can't satisfy productivity ratio and inner surface cleaning quality in the past.
Recently the employing shot-blast cleaning machine also having occurred clears up steel pipe inner wall, it is by the bullet at a high speed of dishing out, strike is on the surface of steel pipe inner wall, remove the attachment such as oxide skin, welding slag, scab, dirt of inner wall surface, expose the metal true qualities, make inner wall surface present uniform roughness, improve surface corrosion-resistant erosion ability, be more suitable for the aggressive chemistry liquid such as transfer oil after japanning.
But present shot-blast cleaning machine can't make bullet reach good separating with broken bullet, grit at the separation phase of ball slag mixture, has affected recycling of bullet; Can not be applicable in enormous quantities, pipelining, labor productivity is low, and labour intensity and cost are high, simultaneously, use inconvenient safety, also are not easy to maintaining.
The utility model content
The purpose of this utility model is to overcome the defective of above-mentioned prior art existence and a kind of eight inside pipe wall compressed air shotblasting machines is provided.The utility model is at the separation phase of ball slag mixture, can make bullet reach good separating with broken bullet, grit, improved the efficient that recycles of bullet, be applicable in enormous quantities, pipelining, can greatly raise labour productivity, reduce labour intensity and cost, simultaneously, easy to use, safe, be easy to maintaining.
the purpose of this utility model is achieved through the following technical solutions, a kind of eight inside pipe wall compressed air shotblasting machines, comprise foundation, wheel abrator, two cleaning chambers, elevator, platform, spiral separator, auger conveyor, transiting vehicle, the shot-peening car, for the ball device, dust arrester, rotary screen and electric device, described elevator and described spiral separator are arranged on described platform, described cleaning chamber is formed by Plate Welding, the top of described cleaning chamber is provided with to load and unload the removable cover of steel pipe, described removable cover and described wheel abrator interlocking, described dust arrester is arranged on the upper end of described wheel abrator, described wheel abrator is arranged in described foundation, be provided with rotary screen on described spiral separator, be respectively arranged with inner screwy fin and external spiral sheet inside and outside described rotary screen, described electric device comprises master control cabinet panel and control button box, be provided with shift knob on described master control cabinet panel and described control button box.
Preferably, the described ball device that supplies connects to form by gas control bullet gate with for the ball pipeline.
Preferably, described elevator is for adopting the bucket elevator of flat belt transmission.
Preferably, be provided with the weight adjustable plate on described spiral separator.
Preferably, the top of described elevator is provided with a cover tensioning apparatus.
Compared with prior art, the utlity model has following beneficial effect: the utility model adopt on the one hand compressed air with shot (sand) with lance ejection to the inwall of steel pipe, by blast cleaning, can remove oxide skin, corrosion and other foreign matter of steel pipe internal-surface, make steel pipe internal-surface bright and clean, reach the purpose of cleaning.simultaneously can reduce or eliminate inner stress of work, thereby reach the purpose that improves surface of the work and inherent quality, on the other hand, the utility model is at the separation phase of ball slag mixture, ball slag mixture is promoted through elevator, sent in rotary screen by feeding screw, flight is arranged inside and outside rotary screen, inner screwy fin is discharged the foreign material such as clinker through slag-drip opening, bullet after sieving, broken ball and grit mixture push through rotary screen external spiral sheet, it is evenly distributed along the separator length direction, adjusting by the weight adjustable plate, making bullet be the stream tentiform falls, pass the horizontal gas flow of wind speed 4～5 meter per seconds, make bullet and broken bullet, grits etc. are different because of quality, after being blown over by air-flow, the bullet that quality is large departs from very small distance, falling into storage ball bucket continues to use, granule bullet after dregs and fragmentation, deviation distance is larger, falling into the waste material bucket gets rid of, dust is discharged through dust removing tube, regulate the intensity through the wind of bullet stream curtain, can reach the purpose that the ball slag separates, produce good separating effect, the utility model also is applicable in enormous quantities, pipelining, can greatly raise labour productivity, and reduces labour intensity and cost, and is easy to use, safe simultaneously, is easy to maintaining.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present utility model will become:
Fig. 1 is front view of the present utility model.
Fig. 2 is the enlarged drawing of the first cleaning chamber of the present utility model.
Fig. 3 is the enlarged drawing of foundation of the present utility model and auger conveyor.
Fig. 4 is the enlarged drawing of bearing support of the present utility model.
Fig. 5 is the enlarged drawing of the second cleaning chamber of the present utility model.
Fig. 6 is the enlarged drawing for the ball device of the present utility model.
Fig. 7 is the enlarged drawing of supporting car of the present utility model.
Fig. 8 is the enlarged drawing of wheel abrator of the present utility model and shot-peening car.
Fig. 9 is the top view of spiral separator of the present utility model, ladder and platform.
Figure 10 is the top view of transiting vehicle of the present utility model.
In figure: 1 be the first cleaning chamber, 2 for foundation, 3 for auger conveyor, 4 for bearing support, 5 for transiting vehicle, 6 be the second cleaning chamber, 7 for elevator, 8 for spiral separator, 9 for ladder, 10 for for shot-peening car, 14 for wheel abrator, 15 being drag chain for supporting car, 13 for ball device, 11 for platform, 12.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is elaborated.Following examples will help those skilled in the art further to understand the utility model, but not limit in any form the utility model.Should be pointed out that to those skilled in the art, without departing from the concept of the premise utility, can also make some distortion and improvement.These all belong to protection domain of the present utility model.
to eight inside pipe wall compressed air shotblasting machines shown in Figure 10, comprise foundation 2 as Fig. 1, wheel abrator 14, the first cleaning chamber 1, the second cleaning chamber 6, elevator 7, platform 11, spiral separator 8, auger conveyor 3, bearing support 4, transiting vehicle 5, shot-peening car 13, ladder 9, railing, for ball device 10, supporting car 12, drag chain 15, dust arrester, rotary screen and electric device, described elevator 7 and described spiral separator 8 are arranged on described platform 11, described the first cleaning chamber 1 and described the second cleaning chamber 6 are formed by Plate Welding, the top of described the first cleaning chamber 1 and the second cleaning chamber 6 is provided with to load and unload the removable cover of steel pipe, described removable cover and described wheel abrator 14 interlockings, described dust arrester is arranged on the upper end of described wheel abrator 14, described wheel abrator 14 is arranged in described foundation 2, be provided with rotary screen on described spiral separator 8, be respectively arranged with inner screwy fin and external spiral sheet inside and outside described rotary screen, described electric device comprises master control cabinet panel and control button box, be provided with the emergency stop switch button on described master control cabinet panel and described control button box.
In the utility model, contain two wheel abrator cabinet bodies, form by Plate Welding at two wheel abrator cabinet bodies, light in structure and firm, afterbody cleaning chamber body receives most bullets of wheel abrator ejection, make bullet flow into smoothly conveying worm, body top, chamber is provided with removable cover, is used for loading and unloading the use of steel pipe, removable cover is responsible for closing by cylinder, and removable cover and wheel abrator interlocking only have after removable cover is closed, and wheel abrator can shot-peening.Head cleaning chamber body is packaged type, with the cleaning of the steel pipe that adapts to different length.
The utility model in, elevator system adopts centrifugal blanking with the bucket elevator of flat belt transmission.Each case junction is added with sealing gasket, prevents that dust is excessive.During work, the hopper that is fixed on transportation rubber belt sweeps the ball material of elevator bottom, then under the driving of elevator motor, the ball material is delivered to the elevator top, at last by centrifugal gravity mode blanking, with ball material input shot-sand separator; Transportation rubber belt wearing and tearing during for minimizing work, the belt pulley of upper and lower part transmission adopts the halo structure, has both reached the frictional force between adhesive tape and belt wheel, has reduced again the wearing and tearing of belt, has extended the service life of elevator adhesive tape; The elevator case is provided with access door, and opening it can repair or replace hopper.Open the door closure of lower encioser, can keep in repair the bottom transmission, get rid of because of the ball amount too much or the fault when having bulk materials to be stuck; The transmission of elevator top is provided with a cover tensioning apparatus.When belt slack, by regulating the adjustment bolt of both sides, with belt tension.In bucket elevator running, when producing the belt creep phenomenon, the adjusting swelling device that can stop, or check that whether the elevator bottom overload because of stifled ball.The sagging degree of elevator chain drive-belt is advisable with 2～4% of chain centre-to-centre spacing.
The utility model in, the effect of platform is mainly supporting elevator and separator, and as observing and the use of maintenance.
The utility model in, adopt weight to regulate curtain type ball sand slag spiral separator.It mainly is comprised of case, separation spiral, Disengagement zone, storage ball bucket etc.Ball slag mixture promotes through elevator; sent in rotary screen by feeding screw, flight is arranged inside and outside rotary screen, inner screwy fin is discharged the foreign material such as clinker through slag-drip opening; bullet after sieving, broken ball and grit mixture push through rotary screen external spiral sheet, and it is evenly distributed along the separator length direction.Adjusting by the weight adjustable plate, making bullet be the stream tentiform falls, pass the horizontal gas flow of wind speed 4～5 meter per seconds, make bullet with broken bullet, grit etc. because quality is different, after being blown over by air-flow, the bullet that quality is large departs from very small distance, fall into storage ball bucket and continue to use, the granule bullet after dregs and fragmentation, deviation distance is larger, fall into the waste material bucket and get rid of, dust is discharged through dust removing tube.Regulate the intensity through the wind of bullet stream curtain, can reach the purpose that the ball slag separates, produce good separating effect.
The Disengagement zone wind speed can be controlled by regulating gate, and the Disengagement zone wind speed is often selected 4～5 meter per seconds.
By cleaning out before residual foreign (foreign material such as overlap, burr, screw, cotton yarn are if can not discharge from slag-drip opening) per tour of inside spin discharge or after class.
In auger conveyor of the present utility model, the effect of auger conveyor is that the bullet under wandering from chamber body drain bucket is transported to elevator bottom in succession.These parts are important component parts of equipment projectile cycling system, and helical blade is processed to stretch through special process and formed, and has improved the service life of spiral, has reduced the operation noise.
In wheel abrator of the present utility model, wheel abrator is disposable, and to contain bullet limited, must constantly supply with.Be exactly to establish for the ball device for this reason.Connect to form by gas control bullet gate with for the ball pipeline for the ball device.Controlled by the gas control gate for ball amount size.The open and close air cylinder driven of gas control gate, the size of gate opening is controlled with adjusting the position of regulating block.
Main specifications of the present utility model and technical parameter are as follows:
Operating pressure: 0.5-0.7Mpa
Cleaning grade: meet SISO559000A-B Sa2.5 level
Air consumption: depend on nozzle diameter (bore φ 10mm, 6.1m
3/ min)
Power supply: single phase ac 220V, 50Hz
Use of the present utility model is as follows with operation:
1), choose supporting compressor and feed mechanism.
2), after the main frame installation site determines, the user just can press the external wiring diagram wiring with electric cabinet and main frame, connects the control tracheae.Air supply pipe one termination compressed gas source, the other end is connected on main frame.
3), check whether each part is firm, and all ball valves should be closed, and the sand valve should cut out, and level controller should be stamped spacing.
4), connect compressed air, when pressure reaches 0.4Mpa, open rapidly ball valve, after pressure stability, then open switch on electric cabinet, to switch on power.
5), sand-blasting machine enters normal work stage.Operate according to indication on electric cabinet, regulate pneumatic sand valve capable of regulating flow quantity, two of left and right sand valve can be worked simultaneously, also can work independently.
6), after hours, should first close the Fales grain valve, after having sprayed the interior abrasive material of blast tube, close the electric cabinet power supply, close ball valve, close air compressor machine, open the ball valve exhaust, should discharge the water-separating gas filter internal water accumulation simultaneously, and open the ball valve draining, when the tank internal gas pressure drops to zero, again close ball valve.
Maintaining of the present utility model and points for attention are as follows:
1), safeguard.Make regular check on consumable accessory, should in time change the replacing method as finding serious wear:
Change nozzle, when the bore premature of nozzle liner increases 20%, should change, generally 200h changes once.
Change sealing ring, unload the hand hole ring flange, take out old sealing ring with screwdriver, then with in sealing ring indentation sealing ring recess, and with hand hole ring flange reinstall.
Change diaphragm, back out eight long spiro nails of air shut-off valve or pneumatic sand valve, unload bottom flange and diaphragm, change new diaphragm, then with all parts by the original position dress also.
Change anti-wearing liner, unload the bleeder valve flange, take out old cover from pneumatic sand valve opening, change new cover, then bleeder valve flange dress is gone back original position.
2), maintenance
Compressed air drying preferably should through filtering, in order to avoid abrasive material is moist, and keep voltage stabilizing.
Various sebific ducts are forbidden to drag on sharp weapon, should in time clean if be stained with greasy dirt.
Should discharge remaining moisture content in water-separating gas filter and sub-cylinder after finishing using.
When not working for a long time, answer abrasive material in excavator, cut off the electricity supply.
3), points for attention
Equipment, accessory must be complete intact.
When sand-blasting machine is in pressure state, forbidden to knock on tank body and carry out other operation, be to avoid danger.
Operating pressure is no more than 0.7Mpa.
Installation of the present utility model, debugging and running are as follows:
After the melt pit drying, first with auger conveyor, elevator bottom, be placed in melt pit, and correct install respectively save spiral after, with expansion bolt fix tightly propeller cap, good and sound reductor, chain and guard shield;
The 15kg/m rail is placed on built-in fitting, welds after levelling and correction.The requirement track should be straight, and two rails should be parallel;
Chute is connected with auger conveyor, then with elevator bottom interface centering and install;
After platform supporting leg and platform are welded, then lower margin is welded on built-in fitting, the upper separator that falls is installed elevator;
First the upper belt pulley with elevator transfers to extreme lower position, and after belt (elevator bucket is contained on belt) was packed into, strained with bolt at two ends, then is connected firmly with bolt and pressing plate.And with upper belt pulley to rise, make belt tension, between belt and belt pulley, relative sliding must not be arranged when guaranteeing work;
With the first cleaning chamber and shot-peening track rail cent(e)ring, and use fix tightly;
The second cleaning chamber, locomotive are placed on track, should rotate flexibly with manually breaking to draw;
To support car and be placed on track, wheel abrator is placed on the shot-peening car and fix tightly, connects gun shot and spray gun;
Proofread and correct and install bearing support;
Install supply air line and the circuit of each parts;
The upper belt pulley of the adjustment elevator of elevator is answered leveling, collides with case in order to avoid belt is wandered off;
In use for some time, when belt is loose, can regulate the bolt of elevator top both sides M16, make belt tension, if the limit of being tuned to can be clipped belt suitable one section in the joint, use again after installing.When the chain slack of top transmission, can unclamp the fixedly bolt of planet-cycloid reducer, mobile decelerator is capable of regulating;
When steel pipe length not for the moment, the second cleaning chamber must be moved, when needs move the second cleaning chamber, the shot-peening car should be first started, allow it advance, artificial second cleaning chamber that promotes moves forward simultaneously, and synchronizing moving to desired location stops, when needs move backward, opposite direction, the special prompting: going-back position must be spacing, in case going-back position is excessive, damages spray gun;
After oil injecting lubricating, can carry out each parts dry run test.After the each several part dry run reaches requirement, the test running of can loading.After deduster, elevator, separator and auger conveyor start, first the required bullet that adds is added gradually from conveying worm (opening cover plate), make in its hopper that is transported to separator.Then carry out in operation sequence test running.On-stream as find that abnormality is arranged, answer hard stop, to be adjusted, repair after test again again.
In the utility model, lubricating system is as described below: the lubricated rotary part that is mainly of machine, bearing 2# calcium-base grease adds once per month.Reductor 40# machine oil, per month once, outer lubricated the locating such as sprocket wheel used 40# machine oil, weekly.Motor and other positions that need lubricate are by requirement is lubricated separately.
In the utility model, the rolling bearing of employing is as shown in table 1.
Table 1
In the utility model, the electrical equipment major loop adopts 3～380 volts of Power supplies, and control loop adopts single-phase 380/220 volt of transformer-supplied, for convenience of maintenance and operation, electric equipment is concentrated and is placed in electrical control cubicles, controls opening, stopping of each motor and magnetic valve.Control the connecting and disconnecting of major loop and control loop power supply with automatic air-break switch QF and key knob SB1.For convenience of operation, this equipment is divided into two parts and controls: main electrical control cubicles control panel and control button box, on master control cabinet panel and control button box, scram button is housed all, and when break down in equipment a certain position, press scram button, the cutting-off controlling loop.
Above specific embodiment of the utility model is described.It will be appreciated that, the utility model is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present utility model.
Claims (5)
1. inside pipe wall compressed air shotblasting machine, it is characterized in that, comprise foundation, wheel abrator, cleaning chamber, elevator, platform, spiral separator, auger conveyor, transiting vehicle, the shot-peening car, for the ball device, dust arrester, rotary screen and electric device, described elevator and described spiral separator are arranged on described platform, described cleaning chamber is formed by Plate Welding, the top of described cleaning chamber is provided with to load and unload the removable cover of steel pipe, described removable cover and described wheel abrator interlocking, described dust arrester is arranged on the upper end of described wheel abrator, described wheel abrator is arranged in described foundation, be provided with rotary screen on described spiral separator, be respectively arranged with inner screwy fin and external spiral sheet inside and outside described rotary screen, described electric device comprises master control cabinet panel and control button box, be provided with shift knob on described master control cabinet panel and described control button box.
2. eight inside pipe wall compressed air shotblasting machines according to claim 1, is characterized in that, the described ball device that supplies connects to form by gas control bullet gate with for the ball pipeline.
3. eight inside pipe wall compressed air shotblasting machines according to claim 1, is characterized in that, described elevator is for adopting the bucket elevator of flat belt transmission.
4. eight inside pipe wall compressed air shotblasting machines according to claim 1, is characterized in that, is provided with the weight adjustable plate on described spiral separator.
5. eight inside pipe wall compressed air shotblasting machines according to claim 1, is characterized in that, the top of described elevator is provided with a cover tensioning apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320236546 CN203266439U (en) | 2013-05-03 | 2013-05-03 | Eight-pipe inner wall shotblasting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320236546 CN203266439U (en) | 2013-05-03 | 2013-05-03 | Eight-pipe inner wall shotblasting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203266439U true CN203266439U (en) | 2013-11-06 |
Family
ID=49496925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320236546 Expired - Fee Related CN203266439U (en) | 2013-05-03 | 2013-05-03 | Eight-pipe inner wall shotblasting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203266439U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139343A (en) * | 2014-07-14 | 2014-11-12 | 江苏龙城铸造机械科技有限公司 | Pneumatic shot blast machine for inner and outer walls of steel pipes |
| CN105269464A (en) * | 2015-11-17 | 2016-01-27 | 重庆明治百通机械制造有限公司 | Workpiece-rotating-type automatic sand recycling dry sand blasting room |
-
2013
- 2013-05-03 CN CN 201320236546 patent/CN203266439U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139343A (en) * | 2014-07-14 | 2014-11-12 | 江苏龙城铸造机械科技有限公司 | Pneumatic shot blast machine for inner and outer walls of steel pipes |
| CN105269464A (en) * | 2015-11-17 | 2016-01-27 | 重庆明治百通机械制造有限公司 | Workpiece-rotating-type automatic sand recycling dry sand blasting room |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203380783U (en) | Pre-treatment system of steel plates | |
| CN102009183B (en) | Method for directly preparing reduced iron powder for powder metallurgy from iron ore concentrate powder | |
| CN202079490U (en) | Intelligent blasting-cleaning production line for surface of large-sized rotating drum body | |
| CN202079494U (en) | Automatic track type shot blast machine | |
| CN202079505U (en) | Hanger-passing type (pneumatic) shot blast machine | |
| CN202079504U (en) | Hanger-rotation and rotary-table-autorotation type (pneumatic) shot blasting machine | |
| CN102632461A (en) | Intelligent shot blasting cleaning production line for large rotary cylinder surface | |
| CN203266438U (en) | Shot blasting cleaning machine for inner wall of steel pipe | |
| CN201473054U (en) | Pebble coal air-cooled conveyor | |
| CN203266439U (en) | Eight-pipe inner wall shotblasting machine | |
| CN207139579U (en) | A kind of automatic loading/unloading type apron type airless shot blasting machine | |
| CN202079500U (en) | Roller way passing and lifting hook rotating combined blasting-cleaning device | |
| CN202079501U (en) | Lifting hook type shot blasting machine | |
| CN205852548U (en) | A kind of abrasive blasting device | |
| CN201361574Y (en) | Discharging iron-removal conveyor controlled by return powder seal in closed grinding circulation system | |
| CN206952792U (en) | Single hook formula navigation mark shot-blast cleaning machine | |
| CN103420052A (en) | Program-controlled coal feeding device for raw coal bunker | |
| CN202079497U (en) | Airless blast cleaner for outer wall of oblique cone roller way steel pipe | |
| CN202079502U (en) | Roller way passing and lifting hook rotating combined blasting-cleaning machine | |
| CN201317793Y (en) | Projectile cycling system | |
| CN205204327U (en) | Transfer post device and system | |
| CN203266431U (en) | Four-pipe outer wall sweeper | |
| CN202079499U (en) | Lifting hook reciprocating type shot blasting machine | |
| CN206748241U (en) | A kind of oblique-roller shot-blast cleaning machine | |
| CN105751081B (en) | A kind of abrasive blasting device and its application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20160503 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |