CN204842007U - Stretch bending straightening machine oil mist spraying device - Google Patents
Stretch bending straightening machine oil mist spraying device Download PDFInfo
- Publication number
- CN204842007U CN204842007U CN201520591076.6U CN201520591076U CN204842007U CN 204842007 U CN204842007 U CN 204842007U CN 201520591076 U CN201520591076 U CN 201520591076U CN 204842007 U CN204842007 U CN 204842007U
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- seat
- inlet pipe
- sleeve
- honour
- air inlet
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Abstract
The utility model discloses a stretch bending straightening machine oil mist spraying device, including the casing, the casing is connected with intake pipe, outlet duct and advances oil pipe, is equipped with the cushion chamber in the casing, be equipped with pressure control device on the hose of the rear end connection of intake pipe, pressure control device include the seat of honour with lower, seat of honour top surface is equipped with the motor, lower is connected with the fixed block, the fixed block is connected with spherical bearing, spherical bearing sliding connection has a sleeve, the output shaft thread of sleeve inner wall and motor is connected, be equipped with the spring groove in the spherical bearing, the spring inslot is equipped with the pressure spring, and the pressure spring roof pressure has the steel ball, output shaft that sliding friction between sleeve outer wall and steel ball power is greater than positive reverse motor is when the sleeve internal rotation and the power of the pivoting friction between the sleeve, seat of honour lower surface is equipped with the arc wall with lower upper surface correspondence, and the arc wall card is on the hose. The utility model discloses can carry out the spraying to aluminium and aluminium alloy plate strip surface, form the one deck tempered oil film, can effectively prevent the product oxidation, can prevent the scotch between product transportation middle level and the layer again.
Description
Technical field
The utility model patent belongs to Al and Alalloy strip plant-scale equipment technical field, is specifically related to a kind of stretch bending-straightening machine mist of oil spray equipment.
Background technology
In Al and Alalloy plate & strip production process, generally need to carry out cleaning aligning, to obtain cleaning, straight template to aluminium strip.But there is following problem in the aluminium strip after cleaning aligning: one is in transportation, and between layers because easily abrading without oil film, two is that finished surface oxidation resistance is poor.
Summary of the invention
The utility model patent object is to overcome prior art defect, a kind of device to Al and Alalloy Strip surface sprinkling mist of oil is provided, this device can facilitate and regulate compressed-air actuated operating pressure and flow subtly, compressed air automatic absorbing light lubricating oil can be utilized, and utilize cushion chamber that compressed air and light lubricating oil are more uniformly mixed.
For achieving the above object, the utility model patent adopts following technical scheme: stretch bending-straightening machine mist of oil spray equipment, comprises housing, and housing seal is connected with air inlet pipe, escape pipe and oil inlet pipe, is provided with cushion chamber in housing; With the flow direction of gas for forward direction, the front end of air inlet pipe and the rear end of escape pipe are all positioned at cushion chamber, and the front of air inlet pipe is rectified the rear end of escape pipe and be provided with gap therebetween; Be respectively equipped with gas passage in air inlet pipe and escape pipe, in escape pipe, the rearward end of gas passage is the little toroidal of outer imperial palace; The inner of oil inlet pipe is connected with cushion chamber, and housing is stretched out and for connecting external light lubricating oil source in the outer end of oil inlet pipe;
The rear end of air inlet pipe connects external high-pressure air source by flexible pipe, and flexible pipe is provided with pressure control device;
Pressure control device comprises the seat of honour and lower seat that are oppositely arranged up and down, on the seat of honour and lower seat, correspondence is provided with the adjustment hole of up/down perforation, seat of honour end face is provided with clockwise and anticlockwise motor in adjustment hole place, lower seat bottom adjustment hole is fixedly connected with fixed block, fixed block has centre bore, the inwall of fixed block centre bore is fixedly connected with spherical bearing, and spherical bearing slidably connects sleeve, and sleeve lining is provided with internal thread and is threaded with the output shaft of described clockwise and anticlockwise motor; Be provided with spring groove in spherical bearing, the opening of spring groove, just to sleeve outer wall, is provided with stage clip in spring groove, and between stage clip and sleeve outer wall, top is pressed with steel ball; The rotation friction when output shaft that force of sliding friction between sleeve outer wall and steel ball is greater than clockwise and anticlockwise motor rotates in sleeve and between sleeve;
Slide between the seat of honour and lower seat and be equipped with guide post, the upper end of guide post protrudes upward the seat of honour and is connected with anticreep plate, and the bottom of guide post is stretched out lower seat downwards and is connected with anticreep plate; Seat of honour lower surface and lower seat upper surface correspondence are provided with deep-slotted chip breaker, and the deep-slotted chip breaker at the seat of honour and the deep-slotted chip breaker of lower seat are stuck on described flexible pipe.
Form blowing portion after the bending of described escape pipe leading section, the front end of blowing portion is bolted with nozzle, is evenly provided with some spray orifice in the nozzle be connected with the gas passage of blowing portion, and described spray orifice is pre-small post-large tubaeform.
Described air inlet pipe is provided with over-pressure safety device; Over-pressure safety device comprises hollow casing, and shell is provided with back seat in rear portion, chamber in the inner, and shell is provided with front stall in front portion, chamber in the inner, and back seat is provided with rear passage, and the through back seat of rear passage is also connected with air inlet pipe backward; Be provided with prepass in the middle part of front stall, the through front stall of prepass is also connected with escape pipe forward;
Front base rear end is provided with crimp groove, and the bottom land place of crimp groove is fixedly connected with sealing gasket around prepass; In rear passage, sliding plug has hollow hole bar, and the endoporus of hollow vent stem is connected with rear passage; The sidewall of hollow vent stem is evenly distributed with pore, and the front end of hollow vent stem is fixedly connected with pressure head, and pressure head is just being arranged described prepass and the diameter of pressure head is greater than the diameter of prepass; Hollow vent stem between pressure head and back seat is arranged with extension spring, and extension spring front end is fixedly connected with pressure head, and extension spring rear end is fixedly connected with back seat.
For slipper seal coordinates between housing with air inlet pipe; The leading section of air inlet pipe is in the taper suitable with the rearward end of described escape pipe gas passage.
Mist of oil spray equipment of the present utility model is increased among stretch-bending straightening operation; can spray Al and Alalloy Strip surface; one deck tempered oil film is formed on its surface; serve good anti-oxidation effect and lubricant effect, and effectively can prevent Al and Alalloy Strip scratch between layers in transportation.Air inlet pipe (compressed air), cushion chamber, oil inlet pipe (light lubricating oil) and escape pipe utilize compressed-air actuated negative pressure tightly to be adsorbed by light lubricating oil in cushion chamber, and cushion chamber provides sufficient blending space, make gas-liquid two-phase mix evenly.The setting of pressure control device, can either the manual separation seat of honour and lower seat, and clockwise and anticlockwise motor can be utilized again to regulate degree of compression to flexible pipe subtly, thus the compressed-air actuated operating pressure of meticulous adjustment and flow.
The spray orifice of nozzle is pre-small post-large tubaeform, can spray more tiny, be atomized more thoroughly gas-liquid mixture, thus formed on Al and Alalloy Strip surface evenly tempered oil film, strengthening oxidation-protective effect.
Over-pressure safety device can realize over-voltage protecting function automatically, prevents too high the bringing to equipment of air pressure from damaging and affecting normal spray process.The front end of air inlet pipe, in the taper suitable with the rearward end of described escape pipe gas passage, can be inserted in escape pipe when needs by the leading section of air inlet pipe like this, thus not adsorbing light lubricating oil, realize the purging function to Al and Alalloy Strip.Stretch bending-straightening machine has cleaning and aligning two kinds of functions to Al and Alalloy Strip.After cleaning, the plate face of Al and Alalloy Strip can remain the globule, now the front end of air inlet pipe can be inserted in escape pipe, thus purge Al and Alalloy Strip, be blown off by the globule on its surface.When stretch bending-straightening machine is aligned Al and Alalloy Strip, need the front end of air inlet pipe in the utility model to extract in escape pipe, thus adsorpting lubrication, realize the mist of oil spraying function to Al and Alalloy Strip.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged drawing at A place in Fig. 1;
Fig. 3 is the structural representation of pressure control device;
Fig. 4 is the enlarged drawing at B place in Fig. 3;
Fig. 5 is the structural representation of over-pressure safety device;
Fig. 6 is the structural representation of hollow vent stem;
Fig. 7 is the right view of Fig. 6.
Detailed description of the invention
As shown in Figures 1 to 7, stretch bending-straightening machine mist of oil spray equipment of the present utility model comprises housing 1, and housing 1 is sealedly connected with air inlet pipe 2, escape pipe 3 and oil inlet pipe 4, is provided with cushion chamber 5 in housing 1; With the flow direction of gas for forward direction, the front end of air inlet pipe 2 and the rear end of escape pipe 3 are all positioned at cushion chamber 5, and the front of air inlet pipe 2 is rectified the rear end of escape pipe 3 and be provided with gap (the two is coaxially set) therebetween; Gas passage 6 is respectively equipped with along axis, the toroidal that in escape pipe 3, the rearward end 7 of gas passage 6 is little in outer imperial palace in air inlet pipe 2 and escape pipe 3.
Be preferably slipper seal between housing 1 with air inlet pipe 2 to coordinate.The leading section of air inlet pipe 2 is in the taper suitable with the rearward end 7 of described escape pipe gas passage 6, can the front end of air inlet pipe 2 be inserted in escape pipe 3 when needs like this, thus not adsorbing light lubricating oil, realize the purging function to Al and Alalloy Strip.Like this, the utility model just has purging and mist of oil sprays two kinds of mode of operations, facilitates staff to select according to actual needs to purge function or mist of oil spraying function.
The inner of oil inlet pipe 4 is connected with cushion chamber 5, and housing 1 is stretched out and for connecting external light lubricating oil source in the outer end of oil inlet pipe 4;
The rear end of air inlet pipe 2 connects external high-pressure air source (as equipment such as high pressure gas holder, air compressor, air pumps) by flexible pipe 8, and flexible pipe 8 is provided with pressure control device 9;
Pressure control device 9 comprises the seat of honour 10 and lower seat 11 that are oppositely arranged up and down, the corresponding adjustment hole 12 being provided with up/down perforation on the seat of honour 10 and lower seat 11, the seat of honour 10 end face is provided with miniature clockwise and anticlockwise motor 13 in adjustment hole 12 place, lower seat 11 bottom adjustment hole 12 is fixedly connected with fixed block 14, fixed block 14 has centre bore, the inwall of fixed block 14 centre bore is fixedly connected with spherical bearing 15, the inner ring of spherical bearing 15 slidably connects sleeve 16, and sleeve 16 inwall is provided with internal thread and is threaded with the output shaft 20 of described clockwise and anticlockwise motor 13; Be provided with spring groove 17 in spherical bearing 15, the opening of spring groove 17, just to sleeve 16 outer wall, is provided with stage clip 18 in spring groove 17, pushes up and be pressed with steel ball 19 between stage clip 18 and sleeve 16 outer wall; The rotation friction when output shaft 20 that force of sliding friction between sleeve 16 outer wall and steel ball 19 is greater than clockwise and anticlockwise motor 13 rotates in sleeve 16 and between sleeve 16;
Slide between the seat of honour 10 and lower seat 11 and be equipped with guide post 21, the upper end of guide post 21 protrudes upward the seat of honour 10 and is connected with anticreep plate 22, and the bottom of guide post 21 is stretched out lower seat 11 downwards and is connected with anticreep plate 22; The seat of honour 10 lower surface and lower seat 11 upper surface correspondence are provided with deep-slotted chip breaker 23, and the deep-slotted chip breaker 23 at the seat of honour 10 and the deep-slotted chip breaker 23 of lower seat 11 are stuck on described flexible pipe 8.
Blowing portion 24 is formed after the bending of described escape pipe 3 leading section, the front end of blowing portion 24 is bolted with nozzle 25, evenly be provided with some spray orifices 26 in the nozzle 25 be connected with the gas passage 6 of blowing portion 24, described spray orifice 26 is in pre-small post-large tubaeform (flow direction of gas is forward direction).Nozzle 25 is screwed onto blowing portion 24 front end, is convenient to nozzle 25 disassembled cleaning after local stoppages occurs spray orifice 26 or change.Spray orifice 26 in pre-small post-large tubaeform, can spray more tiny, be atomized more thoroughly gas-liquid mixture, thus formed on Al and Alalloy Strip surface evenly tempered oil film, strengthening oxidation-protective effect.
Described air inlet pipe 2 is provided with over-pressure safety device 27; Over-pressure safety device 27 comprises hollow casing, and shell 40 is provided with back seat 29 in rear portion, chamber 28 in the inner, and shell 40 is provided with front stall 30 in front portion, chamber 28 in the inner, and back seat 29 is provided with rear passage 31, and the through back seat 29 of rear passage 31 is also connected with air inlet pipe 2 backward; Be provided with prepass 32 in the middle part of front stall 30, the through front stall 30 of prepass 32 is also connected with escape pipe 3 forward.
Front stall 30 rear end is provided with crimp groove 39, and the bottom land place of crimp groove 39 is fixedly connected with sealing gasket 38 around prepass 32; In rear passage 31, sliding plug has hollow hole bar 33, and the endoporus 34 of hollow vent stem 33 is connected with rear passage 31; The sidewall of hollow vent stem 33 is evenly distributed with pore 35, and the front end of hollow vent stem 33 is fixedly connected with pressure head 36, and pressure head 36 is just being arranged described prepass 32 and the diameter of pressure head 36 is greater than the diameter of prepass 32; Hollow vent stem 33 between pressure head 36 and back seat 29 is arranged with extension spring 37, and extension spring 37 front end is fixedly connected with pressure head 36, and extension spring 37 rear end is fixedly connected with back seat 29.
During use, the outer end of oil inlet pipe 4 is connected with external light lubricating oil source, flexible pipe 8 is connected with external high-pressure air source; Clockwise and anticlockwise motor 13 is controlled by external electric control gear.Connect after high-pressure air source, compressed air through flexible pipe 8 and pressure control device 9 thereof, air inlet pipe 2 and on over-pressure safety device 27 enter in the cushion chamber 5 in housing 1.Owing to rectifying the horn mouth to escape pipe 3 rear end before air inlet pipe 2, therefore compressed air enters escape pipe 3 very swimmingly.Compressed air flow velocity is higher, its dynamic pressure is high and static pressure is low, produces drainage, thus produces suction force to oil inlet pipe 4, light lubricating oil in external light lubricating oil source is pumped into cushion chamber 5 by oil inlet pipe 4, is naturally mixed and fed into air inlet pipe 2 with compressed air.The fluid of the gas-liquid two-phase (compressed air and light lubricating oil) in escape pipe 3 is when nozzle 25; be divided into some stocks more tiny, be atomized more thoroughly gas-liquid mixture; thus Al and Alalloy Strip surface formed evenly tempered oil film; strengthening oxidation-protective effect and lubricant effect; prevent Al and Alalloy Strip in transportation from abrading between layers, also prevent Al and Alalloy Strip surface in transport and storage process from oxidative phenomena occurring.
The setting of cushion chamber 5; compressed air and light lubricating oil (gas-liquid two-phase) is made to be able to abundant mixing; compare and cushion chamber 5 is not set, oil inlet pipe 4 is directly directly compared mutually with compressed air hose (air inlet pipe 2 united two into one with escape pipe 3 and form compressed air hose); gas-liquid two-phase is mixed to get more even; the mixture of gas-liquid two-phase is sprayed at, and tempered oil film that Al and Alalloy Strip formed on the surface is afterwards more uniform and stable, improves lubricant effect and oxidation-protective effect.
In using, need to regulate pressure control device 9, obtain best pneumatically operated pressure and flow.Manually the seat of honour 10 and lower seat 11 are separated from each other, the now output shaft 20 of clockwise and anticlockwise motor 13 also non rotating, it is threaded engagement between itself and sleeve 16, relative motion can not be there is between the output shaft 20 of clockwise and anticlockwise motor 13 and sleeve 16 in non-rotary situation, but the force of sliding friction band moving sleeve 16 overcome between steel ball 19 with sleeve 16 moves together with the output shaft 20 of clockwise and anticlockwise motor 13, the outer wall of sleeve 16 slides in spherical bearing 15 in the process, thus allow the seat of honour 10 and lower seat 11 mutually away from.Certainly, reverse operating also can manually make the seat of honour 10 and lower seat 11 close to each other.During initial installation, after the manual separation seat of honour 10 and lower seat 11, can easily by flexible pipe 8 through deep-slotted chip breaker 23.
Guide post 21 can prevent the seat of honour 10 and lower seat 11 from offseting in mutually moving.Anticreep plate 22 can prevent guide post 21 from departing from from the seat of honour 10 or lower seat 11.No longer extrude described flexible pipe 8 after the seat of honour 10 and lower seat 11 are separated from each other a segment distance, now the resistance of pressure control device 9 pairs of air-flows is minimum.When regulating pneumatically operated pressure, start clockwise and anticlockwise motor 13.When the output shaft 20 of clockwise and anticlockwise motor 13 rotates, the rotation friction when output shaft 20 being greater than clockwise and anticlockwise motor 13 due to the force of sliding friction between sleeve 16 outer wall and steel ball 19 rotates in sleeve 16 and between sleeve 16, therefore the frictional force between sleeve 16 and steel ball 19 can not be overcome, sleeve 16 can not be rotated with the axis also can not move axially, the output shaft 20 of clockwise and anticlockwise motor 13 can only be rotated in sleeve 16.Because the output shaft 20 of clockwise and anticlockwise motor 13 is the relations be threaded with sleeve 16, therefore now there is axial displacement with sleeve 16 in the output shaft 20 of clockwise and anticlockwise motor 13, thus regulate the distance between the seat of honour 10 and lower seat 11, (when rotating to a direction, deep-slotted chip breaker 23 compresses flexible pipe 8 to the degree of compression of adjustment deep-slotted chip breaker 23 pairs of flexible pipes 8; During reverse rotation, deep-slotted chip breaker 23 loosens flexible pipe 8), thus realize the fine adjustment to pneumatically operated pressure and flow.
Compressed air enters hollow vent stem 33 by rear passage 31, is then flowed into the inner chamber 28 of over-pressure safety device 27 by pore 35, then flows into escape pipe 3 by prepass 32.In use procedure; there is destabilizing factor (when regulating improper or malfunctioning as pressure control device 9), flow into the air pressure of over-pressure safety device 27 unexpected excessive time; the pulling force that the pressure that air pressure produces overcomes extension spring 37 automatically makes pressure head 36 be pressed on sealing gasket 38 to sinciput and block prepass 32; now no longer to air feed in cushion chamber 5; the utility model stops spraying, thus realizes over-voltage protecting function.
When the air pressure flowing into over-pressure safety device 27 recovers normal level; the pressure that the convinced pressure of Lalique of extension spring 37 produces makes pressure head 36 move to initial position backward; thus make prepass 32 again be communicated with the inner chamber 28 of hollow casing, thus the utility model is made to restart spraying.The control procedure of this protectiveness is carries out automatically, prevents too high the bringing to equipment of air pressure from damaging and affecting normal spray process.
Claims (4)
1. stretch bending-straightening machine mist of oil spray equipment, is characterized in that: comprise housing, housing seal is connected with air inlet pipe, escape pipe and oil inlet pipe, is provided with cushion chamber in housing; With the flow direction of gas for forward direction, the front end of air inlet pipe and the rear end of escape pipe are all positioned at cushion chamber, and the front of air inlet pipe is rectified the rear end of escape pipe and be provided with gap therebetween; Be respectively equipped with gas passage in air inlet pipe and escape pipe, in escape pipe, the rearward end of gas passage is the little toroidal of outer imperial palace; The inner of oil inlet pipe is connected with cushion chamber, and housing is stretched out and for connecting external light lubricating oil source in the outer end of oil inlet pipe;
The rear end of air inlet pipe connects external high-pressure air source by flexible pipe, and flexible pipe is provided with pressure control device;
Pressure control device comprises the seat of honour and lower seat that are oppositely arranged up and down, on the seat of honour and lower seat, correspondence is provided with the adjustment hole of up/down perforation, seat of honour end face is provided with clockwise and anticlockwise motor in adjustment hole place, lower seat bottom adjustment hole is fixedly connected with fixed block, fixed block has centre bore, the inwall of fixed block centre bore is fixedly connected with spherical bearing, and spherical bearing slidably connects sleeve, and sleeve lining is provided with internal thread and is threaded with the output shaft of described clockwise and anticlockwise motor; Be provided with spring groove in spherical bearing, the opening of spring groove, just to sleeve outer wall, is provided with stage clip in spring groove, and between stage clip and sleeve outer wall, top is pressed with steel ball; The rotation friction when output shaft that force of sliding friction between sleeve outer wall and steel ball is greater than clockwise and anticlockwise motor rotates in sleeve and between sleeve;
Slide between the seat of honour and lower seat and be equipped with guide post, the upper end of guide post protrudes upward the seat of honour and is connected with anticreep plate, and the bottom of guide post is stretched out lower seat downwards and is connected with anticreep plate; Seat of honour lower surface and lower seat upper surface correspondence are provided with deep-slotted chip breaker, and the deep-slotted chip breaker at the seat of honour and the deep-slotted chip breaker of lower seat are stuck on described flexible pipe.
2. stretch bending-straightening machine mist of oil spray equipment according to claim 1, it is characterized in that: after the bending of described escape pipe leading section, form blowing portion, the front end of blowing portion is bolted with nozzle, evenly be provided with some spray orifices in the nozzle be connected with the gas passage of blowing portion, described spray orifice is pre-small post-large tubaeform.
3. stretch bending-straightening machine mist of oil spray equipment according to claim 1 and 2, is characterized in that: described air inlet pipe is provided with over-pressure safety device; Over-pressure safety device comprises hollow casing, and shell is provided with back seat in rear portion, chamber in the inner, and shell is provided with front stall in front portion, chamber in the inner, and back seat is provided with rear passage, and the through back seat of rear passage is also connected with air inlet pipe backward; Be provided with prepass in the middle part of front stall, the through front stall of prepass is also connected with escape pipe forward;
Front base rear end is provided with crimp groove, and the bottom land place of crimp groove is fixedly connected with sealing gasket around prepass; In rear passage, sliding plug has hollow hole bar, and the endoporus of hollow vent stem is connected with rear passage; The sidewall of hollow vent stem is evenly distributed with pore, and the front end of hollow vent stem is fixedly connected with pressure head, and pressure head is just being arranged described prepass and the diameter of pressure head is greater than the diameter of prepass; Hollow vent stem between pressure head and back seat is arranged with extension spring, and extension spring front end is fixedly connected with pressure head, and extension spring rear end is fixedly connected with back seat.
4. stretch bending-straightening machine mist of oil spray equipment according to claim 1, is characterized in that: for slipper seal coordinates between housing with air inlet pipe; The leading section of air inlet pipe is in the taper suitable with the rearward end of described escape pipe gas passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520591076.6U CN204842007U (en) | 2015-08-08 | 2015-08-08 | Stretch bending straightening machine oil mist spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520591076.6U CN204842007U (en) | 2015-08-08 | 2015-08-08 | Stretch bending straightening machine oil mist spraying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204842007U true CN204842007U (en) | 2015-12-09 |
Family
ID=54732604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520591076.6U Withdrawn - After Issue CN204842007U (en) | 2015-08-08 | 2015-08-08 | Stretch bending straightening machine oil mist spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204842007U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984847A (en) * | 2015-08-08 | 2015-10-21 | 登电集团铝加工有限公司 | Stretch bender oil mist sprayer |
| CN110152904A (en) * | 2019-06-12 | 2019-08-23 | 薛德刚 | A kind of system and device and method spraying aeroge, fiber and binder mixture |
-
2015
- 2015-08-08 CN CN201520591076.6U patent/CN204842007U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104984847A (en) * | 2015-08-08 | 2015-10-21 | 登电集团铝加工有限公司 | Stretch bender oil mist sprayer |
| CN110152904A (en) * | 2019-06-12 | 2019-08-23 | 薛德刚 | A kind of system and device and method spraying aeroge, fiber and binder mixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151209 Effective date of abandoning: 20170412 |
|
| AV01 | Patent right actively abandoned |