CN204431073U - A kind of shot-blasting machine cloth bag back-blowing dust removing device - Google Patents
A kind of shot-blasting machine cloth bag back-blowing dust removing device Download PDFInfo
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- CN204431073U CN204431073U CN201520110179.6U CN201520110179U CN204431073U CN 204431073 U CN204431073 U CN 204431073U CN 201520110179 U CN201520110179 U CN 201520110179U CN 204431073 U CN204431073 U CN 204431073U
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- dust
- bag
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- cloth
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- 239000000428 dust Substances 0.000 title claims abstract description 111
- 238000005422 blasting Methods 0.000 title claims abstract description 48
- 238000007664 blowing Methods 0.000 title claims abstract description 33
- 239000004744 fabric Substances 0.000 title claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 15
- 238000013461 design Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a kind of shot-blasting machine cloth bag back-blowing dust removing device, it is characterized in that, comprise and be arranged at dust cleaning case inner chamber upper end position and the horizontal steel pipe be connected with wind pipe, horizontal steel pipe lower surface is communicated with downwards and is fixedly connected with some vertical steel pipes, dust-removal cloth-bag upper end is cloth bag opening and opening is connected on vertical steel pipe, dust-removal cloth-bag is set on bracing members rack to keep deployed condition, described bracing members rack is fixedly installed on vertical steel pipe, described cloth bag back-blowing dust removing device also comprises a back blowing machine, the back blowing machine port of export is arranged on wind pipe near dust cleaning case position by three-way control valve.The utility model is design for the feature of shot-blasting machine dust, can remove dust-removal cloth-bag surface dirt in efficient quick ground, improve dust removing effects and the service life of dust-removal cloth-bag.
Description
Technical field
The utility model relates to a kind of for metalwork surface-treated shot-blasting machine equipment, particularly relates to a kind of shot-blasting machine cloth bag back-blowing dust removing device.
Background technology
Shot-blasting machine is the Casting Equipment of High-velocity Projectiles cleaning or the strengthening cast(ing) surface utilizing shot-blast unit to spray.Shot-blasting machine hits metallic surface by one or more sand material, eliminates some attachments of metal surface, as iron rust, or obtains a specific superficial layer by ball blast percussion.Ball blast medium can be the sand of all size, silicon-carbide particle, small ball etc.
Existing a kind of shot-blasting machine, its structure is, comprise the shot-blasting machine operating room of a body structure, side, shot-blasting machine operating room is just provided with shot-blast unit to indoor, the hitch for hanging workpiece is provided with above shot-blasting machine operating room inner chamber, below is provided with bullet collecting mechanism and drag box, bullet collecting mechanism can be collected the bullet that drops in shot-blasting machine operating room and deliver in drag box, shot-blasting machine is provided with cope above operating room, be provided with lifting device between drag box and cope and can the bullet of drag box be promoted in cope, conveyance conduit is connected with between cope and shot-blast unit.
When such shot-blasting machine uses, pending workpiece suspension is placed in shot-blasting machine operating room, and then shot-blast unit ejection bullet carries out surface treatment to workpiece.The bullet dropped enters into drag box through bullet collecting mechanism, is then stored in cope through lifting device by drag box conveying, is then sent to the shot-blast unit realization circulation of shot-blasting machine by pipeline.
This existing shot-blasting machine device, there is following defect: in the process that bullet utilizes at iterative cycles, can constantly wearing and tearing fragmentation attenuate, when after the drawing small of part bullet, dynamics of clashing into during bead blasted surfaces process reduces, and causes meeting the requirements of surface treatment effect; Can clash into the impurity in small, broken bits such as some oxide skins of surface of the work during surface treatment simultaneously, be mingled in bullet, also can reduce surface treatment effect.Meanwhile, the bullet of these minor diameters and impurity are very easy to cause line clogging, once blocking, then need to be shut down by shot-blasting machine and dismantle pipeline etc. to dredge, affect shot-blasting machine production efficiency.Solving this defect in prior art is by regularly the bullet and slag that carry out screening out out minor diameter after bullet taking-up being mixed.But this mode one is cumbersome, two belong to and process afterwards, do not have promptness.
In addition, operationally, striking work surface can produce a large amount of dusts to shot-blasting machine, easily affects surface of the work treatment effect and dust reduces environmental sanitation after leaking.In part shot-blasting machine, a simple filter can be increased and adopt the mode of filtering to carry out dedusting, but efficiency of dust collection is lower and need frequent cleaned and changed filter core to cause inconvenience.
In order to solve above-mentioned dust removal problem, applicant devises a kind of dust collecting device of shot blasting machine, have employed a dust absorption fan and dust is drawn in a dust cleaning case by dust sucting pipeline, then realizes dedusting by the multiple dust-removal cloth-bags in dust cleaning case.Improve efficiency of dust collection.But because the dust sucked in the shot-blasting machine course of work usually exists quality comparatively greatly, the problems such as the easy knot tying of dust-removal cloth-bag appearance, cause efficiency of dust collection lower.
Utility model content
For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is: how to provide a kind of shot-blasting machine cloth bag back-blowing dust removing device that the feature for shot-blasting machine dust designs, dust-removal cloth-bag surface dirt can be removed in efficient quick ground, improve dust removing effects and the service life of dust-removal cloth-bag.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme:
A kind of shot-blasting machine cloth bag back-blowing dust removing device, it is characterized in that, comprise and be arranged at dust cleaning case inner chamber upper end position and the horizontal steel pipe be connected with wind pipe, horizontal steel pipe lower surface is communicated with downwards and is fixedly connected with some vertical steel pipes, dust-removal cloth-bag upper end is cloth bag opening and opening is connected on vertical steel pipe, dust-removal cloth-bag is set on bracing members rack to keep deployed condition, described bracing members rack is fixedly installed on vertical steel pipe, described cloth bag back-blowing dust removing device also comprises a back blowing machine, the back blowing machine port of export is arranged on wind pipe near dust cleaning case position by three-way control valve.
Like this, dust-removal cloth-bag upper end open upwards connects and conveniently can carry out reverse gas cleaning; After dust-removal cloth-bag uses a period of time, dust-removal cloth-bag surface can be adsorbed one deck dust and be caused efficiency of dust collection lower, now back blowing machine can be started, pour in down a chimney into dust-removal cloth-bag by three-way control valve control realization is distinguished and admirable, the dust of dust-removal cloth-bag adsorption is oppositely blown out, and makes dust fall to dust cleaning case bottom along the dividing plate tilted.Dust-removal cloth-bag remains deployed condition by bracing members rack, can ensure its dust removal by filtration efficiency, simultaneously, after this structure also makes to arrange vibrator, vibration can be delivered to cloth bag surface well, to be shaken off by the dust of cloth bag adsorption, improve cloth bag efficiency.
As optimization, cloth bag back-blowing dust removing device also comprises a vibrator, and vibrator is fixedly connected with described horizontal steel pipe.Like this, during reverse gas cleaning, can transfer vibrations on dust-removal cloth-bag by horizontal steel pipe, vertical steel pipe and bracing members rack by vibrator, the dust that dust-removal cloth-bag upper part is adsorbed tighter is shaken up, and then be conveniently reversed deashing blowout, improve reverse gas cleaning effect.
Further, cloth bag back-blowing dust removing device also comprises the heating that is arranged on back blowing machine exit position.Due in this device like this, dividing plate to arrange the dust that can make dust-removal cloth-bag adsorbs very fine and closely woven, but when moisture is larger, dust-removal cloth-bag surface dirt is very easy to knot tying, now only often also be difficult to by vibration and reverse gas cleaning the dust removing dust-removal cloth-bag surface, now can open heating, by hot blast by after the dust Baking out of knot tying, shaken up by vibration, then carrying out reverse gas cleaning can fast reliably clean out dust-removal cloth-bag surface dirt again.
In sum, the utility model is design for the feature of shot-blasting machine dust, can remove dust-removal cloth-bag surface dirt in efficient quick ground, improve dust removing effects and the service life of dust-removal cloth-bag.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation that have employed the shot-blasting machine of the utility model structure.
Fig. 2 is the side view sending separately ball pipe in Fig. 1 He connect ball plate portion.
Detailed description of the invention
Below in conjunction with a kind of detailed description of the invention that have employed the shot-blasting machine of the utility model structure, the utility model is described in further detail.
During concrete enforcement: as shown in Figure 1-2, a kind of shot-blasting machine that have employed the utility model structure, comprise frame 1 and the shot-blasting machine operating room 2 being arranged on a body structure in frame 1, side, shot-blasting machine operating room 2 is just provided with shot-blast unit 3 to indoor, the hitch for hanging workpiece is provided with above shot-blasting machine operating room 2 inner chamber, below is provided with bullet gathering-device and drag box 4, bullet gathering-device can be collected the bullet that drops in shot-blasting machine operating room 2 and deliver in drag box 4, cope 5 is provided with above shot-blasting machine operating room 2, be provided with lifting device between drag box 4 and cope 5 and can the bullet of drag box 4 be promoted in cope 5, bullet conveyance conduit is connected with between cope 5 and shot-blast unit 3, shot-blasting machine also comprises dust arrester, its main points are, have bullet sorting structure in described bullet gathering-device, described dust arrester comprises a dust cleaning case 6, described dust cleaning case 6 is communicated with top, upper end, shot-blasting machine operating room 2 by dust sucting pipeline 7, described dust sucting pipeline 7 is provided with dust absorption fan 8, described dust cleaning case 6 inside is provided with multiple dust-removal cloth-bag 9, and dust cleaning case 6 top is provided with wind pipe 10 upwards and distinguished and admirable needs is flowed out from wind pipe 10 through dust-removal cloth-bag 9.
Like this, when above-mentioned shot-blasting machine uses, the bullet sorting structure in bullet gathering-device can realize bullet sorting, and the bullet diminish size after wearing and tearing and fraction solids impurity sort out, and synchronously remove during work.This ensures that there ball blast effect, improve ball blast efficiency.Meanwhile, the dust arrester of setting, by the dust sucking-off that shot-blasting machine operating room inner impact produces by dust absorption fan, realizes dedusting by dust-removal cloth-bag, ensure that dust removing effects and efficiency in dust cleaning case.
Wherein, described bullet gathering-device comprise be horizontally installed on shot-blasting machine operating room intracavity bottom send ball pipe 11, ball pipe 11 port of export is sent to be communicated with drag box 4, send in ball pipe 11 to be provided with and send ball helical axis 12, ball helical axis 12 is sent to send the ball motor that send of ball pipe 11 end to be connected with being arranged on, send ball pipe 11 both sides to be connected with and extendedly obliquely connect ball plate 13, connect sending of joining place position, ball plate 13 lower end ball helical axis 12 is provided with gap size is greater than cracking of bullet diameter, described sending ball pipe 11 tube wall has the filter opening that some diameters are less than bullet diameter and forms bullet sorting structure.
Like this, bullet gathering-device catches bullet by the ball plate that connects be obliquely installed, then being converged to by rolling of cracking send in ball pipe, ball electric motor starting is sent to drive bullet to be sent in drag box by sending ball helical axis, in this process, the rear size of wearing and tearing is less than normal bullet and fraction solids particle under helical axis drives, can leach from the filter opening sent ball tube wall, realizes sorting.So namely, achieve the sorting of small size bullet when shot-blasting machine works, its structure is simple, and sorting is reliable quick, does not affect ball blast self work.
Wherein, filter opening ball plate 13 also offering some diameters and be less than bullet diameter is connect described in.Like this, part bullet can spill by filter opening from it when connecing and ball plate rolling, and realizes sorting, improves sorting efficiency.
Wherein, described in send ball pipe 11 and connect in the frame below ball plate 13 and be provided with a collection ball drawer 14, described in send ball pipe 11 and connect the downward projection of ball plate 13 and all drop in collection ball drawer 14.Like this, the hoodle spilt by collection ball drawer collection sorting and impurity particle is facilitated to focus on.
Wherein, described dust sucting pipeline 7 is connected to dust cleaning case 6 side lower end position, described dust cleaning case 6 medium position is provided with dividing plate 15, described dust-removal cloth-bag 9 main body is positioned at above dividing plate, dividing plate 15 leaves ventilation gap away between dust sucting pipeline 7 one end and dust cleaning case 6 inwall, in the dust cleaning case space below described dividing plate 15 from dust sucting pipeline one end to ventilation gap one end location interval and shift to install that polylith vertically arranges up and down stream baffle plate 16.
Like this, dust cleaning case is divided into upper and lower two parts by dividing plate, dust-removal cloth-bag is positioned at top, is provided with streams baffle plate in bottom, make to be mingled with dust distinguished and admirable enter into dust cleaning case after, need through streaming baffle plate, meeting and stream baffle plate produce stream, shock etc., and then the dust making particle larger first can settle down below dividing plate, and the dust that particle is thinner just enters into dust cleaning case top by ventilation gap and filters by dust-removal cloth-bag, like this differentiated treatment is carried out to dust, improve treatment effeciency.Avoid the impact of bulky grain dust to dust-removal cloth-bag simultaneously; improve the protected effect to dust-removal cloth-bag; extend the service life of dust-removal cloth-bag; and make the duty that dust-removal cloth-bag can keep stable; avoid clashing into by bulky grain dust the interference vibrated during dedusting, ensure that separation dust removing effects.
Wherein, dividing plate 16 is provided with the downward-sloping setting in ventilation gap one end, and the dust like this by dust-removal cloth-bag dedusting accumulation can slip down to below dividing plate from dividing plate, is beneficial to the collection process of dust.
Wherein, superposedly stream baffle plate 16 upper end and dividing plate 15 is fixed, the also correspondence of streaming below baffle plate 16 being positioned at bottom is provided with a grey drawer 17 of collection.
Like this, the collection process of dust in dust cleaning case is facilitated.
Wherein, the grey drawer 17 of described collection and be also provided with a funnel 18 streaming between baffle plate of bottom, the baffle plate lower end of streaming being positioned at bottom is connected with funnel 18 upper surface.
Like this, the setting of funnel, is not only conveniently inducted in the grey drawer of collection by the dust of collection, time simultaneously prior, distinguished and admirable below dividing plate and collecting between grey drawer can isolate by the existence of funnel, avoid distinguished and admirable by collection grey drawer in dust kick up, cause reducing dust removing effects.
Wherein, described dust cleaning case 6 inner chamber upper end position is provided with horizontal steel pipe 19 and is connected with wind pipe 10, horizontal steel pipe 19 lower surface is communicated with downwards and is fixedly connected with some vertical steel pipes 20, vertically arrange and be arranged on above dividing plate 15 in described dust-removal cloth-bag 9 interval arranged side by side, dust-removal cloth-bag 9 upper end is cloth bag opening and opening is connected on vertical steel pipe 20, dust-removal cloth-bag 9 is set in keep deployed condition on bracing members rack, and described bracing members rack is fixedly installed on vertical steel pipe 20.
Like this, dust-removal cloth-bag remains deployed condition by bracing members rack, can ensure its dust removal by filtration efficiency.Dust-removal cloth-bag upper end open upwards connects conveniently can carry out reverse gas cleaning; Meanwhile, after this structure also makes to arrange vibrator, vibration can be delivered to cloth bag surface well, to be shaken off by the dust of cloth bag adsorption, improve cloth bag efficiency.
Wherein, be also provided with cloth bag back-blowing dust removing device, described cloth bag back-blowing dust removing device comprises a back blowing machine 21, and back blowing machine 21 port of export is arranged on wind pipe 10 near dust cleaning case 6 position by three-way control valve.
Like this, after dust-removal cloth-bag uses a period of time, dust-removal cloth-bag surface can be adsorbed one deck dust and be caused efficiency of dust collection lower, now back blowing machine can be started, pour in down a chimney into dust-removal cloth-bag by three-way control valve control realization is distinguished and admirable, the dust of dust-removal cloth-bag adsorption is oppositely blown out, and makes dust fall to dust cleaning case bottom along the dividing plate tilted.
Wherein, cloth bag back-blowing dust removing device also comprises a vibrator 22, and vibrator 22 is fixedly connected with described horizontal steel pipe 19.Like this, during reverse gas cleaning, can transfer vibrations on dust-removal cloth-bag by horizontal steel pipe, vertical steel pipe and bracing members rack by vibrator, the dust that dust-removal cloth-bag upper part is adsorbed tighter is shaken up, and then be conveniently reversed deashing blowout, improve reverse gas cleaning effect.
Wherein, cloth bag back-blowing dust removing device also comprises the heating that is arranged on back blowing machine exit position.Due in this device like this, dividing plate to arrange the dust that can make dust-removal cloth-bag adsorbs very fine and closely woven, but when moisture is larger, dust-removal cloth-bag surface dirt is very easy to knot tying, simultaneously dust-proof is metal dust, heavier mass, therefore be only often also difficult to by vibration and reverse gas cleaning the dust removing dust-removal cloth-bag surface after knot tying, now heating can be opened, by hot blast by after the dust Baking out of knot tying, shaken up by vibration again, and then carry out reverse gas cleaning can fast reliably dust-removal cloth-bag surface dirt be cleaned out, ensure that dust-removal cloth-bag efficiency of dust collection and service life.
Wherein, wind pipe is also provided with an air-out blower fan 23.Like this, can improve air suction efficiency, that avoids dividing plate arranges the impact brought distinguished and admirable flow velocity, ensure that efficiency of dust collection.
Therefore above-mentioned shot-blasting machine can ensure the sorting of bullet in the shot-blasting machine course of work, the effects such as cleaning, dedust, sand-lime separation, lifting.The dust laden air produced when can effectively work to shot-blasting machine processing is separated, sedimentation and purification multistep treatment, and efficient dust impurities, good dedusting effect, the stable work in work be separated in air, SR is little, energy consumption is low.
Claims (3)
1. a shot-blasting machine cloth bag back-blowing dust removing device, it is characterized in that, comprise and be arranged at dust cleaning case inner chamber upper end position and the horizontal steel pipe be connected with wind pipe, horizontal steel pipe lower surface is communicated with downwards and is fixedly connected with some vertical steel pipes, dust-removal cloth-bag upper end is cloth bag opening and opening is connected on vertical steel pipe, dust-removal cloth-bag is set on bracing members rack to keep deployed condition, described bracing members rack is fixedly installed on vertical steel pipe, described cloth bag back-blowing dust removing device also comprises a back blowing machine, the back blowing machine port of export is arranged on wind pipe near dust cleaning case position by three-way control valve.
2. shot-blasting machine cloth bag back-blowing dust removing device as claimed in claim 1, it is characterized in that, cloth bag back-blowing dust removing device also comprises a vibrator, and vibrator is fixedly connected with described horizontal steel pipe.
3. shot-blasting machine cloth bag back-blowing dust removing device as claimed in claim 2, it is characterized in that, cloth bag back-blowing dust removing device also comprises the heating that is arranged on back blowing machine exit position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520110179.6U CN204431073U (en) | 2015-02-15 | 2015-02-15 | A kind of shot-blasting machine cloth bag back-blowing dust removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520110179.6U CN204431073U (en) | 2015-02-15 | 2015-02-15 | A kind of shot-blasting machine cloth bag back-blowing dust removing device |
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| Publication Number | Publication Date |
|---|---|
| CN204431073U true CN204431073U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520110179.6U Expired - Fee Related CN204431073U (en) | 2015-02-15 | 2015-02-15 | A kind of shot-blasting machine cloth bag back-blowing dust removing device |
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| Country | Link |
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| CN (1) | CN204431073U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112827A (en) * | 2016-06-28 | 2016-11-16 | 陈铭鸿 | A kind of shot-blasting machine |
| CN107998773A (en) * | 2017-12-27 | 2018-05-08 | 广西景典钢结构有限公司 | Shot blasting dust removal equipment |
| CN108161756A (en) * | 2018-02-12 | 2018-06-15 | 李霈飞 | Structure optimization type drum-type shot blasting machine |
-
2015
- 2015-02-15 CN CN201520110179.6U patent/CN204431073U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112827A (en) * | 2016-06-28 | 2016-11-16 | 陈铭鸿 | A kind of shot-blasting machine |
| CN107998773A (en) * | 2017-12-27 | 2018-05-08 | 广西景典钢结构有限公司 | Shot blasting dust removal equipment |
| CN108161756A (en) * | 2018-02-12 | 2018-06-15 | 李霈飞 | Structure optimization type drum-type shot blasting machine |
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| 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: 20150701 Termination date: 20210215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |