CN216001539U - Industrial solid waste recycling and extruding device - Google Patents
Industrial solid waste recycling and extruding device Download PDFInfo
- Publication number
- CN216001539U CN216001539U CN202120244602.7U CN202120244602U CN216001539U CN 216001539 U CN216001539 U CN 216001539U CN 202120244602 U CN202120244602 U CN 202120244602U CN 216001539 U CN216001539 U CN 216001539U
- Authority
- CN
- China
- Prior art keywords
- cross beam
- component
- rack
- face
- beam frame
- 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.)
- Active
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses an industrial solid waste recycling and extruding device which comprises a rack, an electric guide rail, an adjusting component, a cross beam frame, an extruding component, a bearing top plate, a feeding component, a feeding table, a hot drying component and a discharging cover, wherein the center of the top end surface of the rack is provided with the cross beam frame, the top end surface of the cross beam frame is fixedly provided with the bearing top plate through bolts, the top end surface of the bearing top plate is provided with the feeding component, one end of the top of the feeding component is provided with the feeding table, one side inside the cross beam frame is provided with the adjusting component, and one end of the adjusting component is connected with the electric guide rail, the service life of the equipment is prolonged.
Description
Technical Field
The utility model relates to the field of solid waste treatment equipment, in particular to an industrial solid waste recycling and extruding device.
Background
Solid waste refers to solid, semi-solid waste material produced during production, life and other activities that loses its original value of use or is discarded or abandoned without losing its value of use, including solid particles separated from waste water, waste gas; much has greater harm; when solid waste is recycled, the recycling extrusion is mostly adopted for extrusion treatment; the recycling and extruding device in the prior art has a single function, and has low extruding efficiency when extruding solid wastes; and the long-time extrusion operation can cause serious damage to the surface of the extrusion roll, resulting in the shortened service life of the extrusion roll, and therefore, the industrial solid waste recycling extrusion device is designed. Is highly desirable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an industrial solid waste recycling and extruding device which is firm in structure and good in supporting stability, can be used for carrying out softening treatment on solid waste and then carrying out extruding operation, is convenient for adjusting the extruding width, can greatly improve the extruding efficiency, can also reduce the damage to equipment in the extruding process and prolongs the service life of the equipment.
The purpose of the utility model can be realized by the following technical scheme:
an industrial solid waste recycling and extruding device comprises a rack, an electric guide rail, an adjusting assembly, a cross beam frame, an extruding assembly, a bearing top plate, a feeding assembly, a feeding table, a hot drying assembly and a discharging cover, wherein the cross beam frame is installed in the center of the top end face of the rack, the bearing top plate is fixedly installed on the top end face of the cross beam frame through bolts, the feeding assembly is installed on the top end face of the bearing top plate, the feeding table is arranged at one end of the top of the feeding assembly, the adjusting assembly is arranged on one side inside the cross beam frame, one end of the adjusting assembly is connected with the electric guide rail, the extruding assembly is installed on the other side inside the cross beam frame, the discharging cover is installed in the position, located on the center end face of the rack, of the inside of the cross beam frame in an inserting mode, and the hot drying assembly is installed on the other side of the top end face of the rack;
the adjusting component comprises a first transmission motor, a first transmission belt, a first driven shaft, an adjusting cylinder, a piston rod, an adjustable squeeze roller and a first casing, the first transmission motor is arranged at one end of the top end face of the frame, the first transmission belt is installed on one side of the first transmission motor through connection of a transmission belt pulley, the first casing is movably installed on one side of the inside of the cross beam frame, the top and the bottom of the first casing are respectively connected with the bearing top plate and the end face of the frame in a laminating mode, the first driven shaft is installed in the middle of the inside of the first casing in an inserting mode, one end of the first driven shaft is fixedly connected with the first transmission belt pulley through the transmission belt pulley, and the adjustable squeeze roller is fixedly installed on the outer side of the first driven shaft.
As a further scheme of the utility model: the feeding assembly comprises a storage box, a storage frame, a discharging through hole, a third motor, a spiral material conveying rod and a lifting blade, the storage frame is fixedly installed around the top end face of the bearing top plate through bolts, the top end face of the storage frame is provided with the storage box through welding and fixing, a feeding table is installed on one side of the top end face of the storage box in an inserting mode, one side of the top of the storage box is connected with the hot drying assembly, the third motor is installed on one side of the end face of the storage box through bolts, the motor shaft of the third motor penetrates through the outer wall of the storage box and is connected with the spiral material conveying rod, the inner wall of the inner portion, close to the tail end of the spiral material conveying rod, of the storage box is provided with the discharging through hole, the lifting blade is installed on the end face of the bottom of the discharging through hole, and the bottom of the lifting blade penetrates through the inside of the bearing top plate and the transverse beam frame.
As a further scheme of the utility model: the hot subassembly that dries by the fire includes hot drying rack, hot machine and heat pipe of drying by the fire, hot drying rack passes through bolt fixed mounting at the top terminal surface opposite side of frame, the top terminal surface fixed mounting of hot drying rack has the hot machine of drying by the fire, the top one end connection of the hot machine of drying by the fire installs the heat pipe, and the other end grafting of heat pipe installs the inboard top at the storage case.
As a further scheme of the utility model: the adjusting groove has been seted up to the top terminal surface one end of frame, and electronic guide rail fixed mounting is in the inside of adjusting groove, the top connection of electronic guide rail installs the guide rail slider, and the bottom terminal surface fixed connection of screw and first transmission motor is passed through at the top of guide rail slider.
As a further scheme of the utility model: the adjusting cylinder is fixedly installed on one side of the end face of the cross beam frame through screws, a piston rod is installed at one end of the adjusting cylinder in an inserting mode, and the other end of the piston rod is fixedly connected with the outer wall of the first machine shell.
As a further scheme of the utility model: the extrusion subassembly includes second drive motor, second drive belt, second driven shaft, fixed squeeze roller and second casing, the second drive motor passes through the screw fixed mounting at the top end face other end of frame, the second drive belt is installed through the driving pulley connection in one side of second drive motor, second casing fixed mounting is at the inside opposite side of crossbeam frame, and the terminal surface central authorities of second casing peg graft and install the second driven shaft, and the other end of second driven shaft passes through the driving pulley and is connected with the second drive belt, the outside fixed mounting of second driven shaft has fixed squeeze roller, and fixed squeeze roller is located the outside of adjustable squeeze roller.
The utility model has the beneficial effects that: the industrial solid waste recycling and extruding device is firm in structure and good in supporting stability, when the device is used, the particle size of solid waste to be extruded is adjusted through the adjusting assembly and the extruding assembly according to needs, the extruding width can be adjusted, so that different solid wastes are met, after materials to be extruded are injected into the feeding assembly through the feeding table, the solid wastes can be heated and softened through the heating assembly, the softened solid wastes are extruded again, the extruding efficiency can be greatly improved, the damage to an extruding roller in the extruding process can be reduced, and the service life of the device is effectively prolonged.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a first overall structural schematic of the present invention;
FIG. 2 is a second overall structural schematic of the present invention;
FIG. 3 is an overall front view of the present invention;
FIG. 4 is an overall cross-sectional view of the present invention;
FIG. 5 is a partial cross-sectional view of the present invention;
in the figure: 1. a frame; 2. an electric rail; 3. an adjustment assembly; 4. a cross beam frame; 5. an extrusion assembly; 6. a load bearing top plate; 7. a feeding assembly; 8. a feeding table; 9. a hot drying component; 10. a blanking cover; 31. a first drive motor; 32. a first drive belt; 33. a first driven shaft; 34. an adjusting cylinder; 35. a piston rod; 36. the extrusion roll can be adjusted; 37. a first housing; 51. a second drive motor; 52. a second belt; 53. a second driven shaft; 54. fixing the extrusion roller; 55. a second housing; 71. a material storage box; 72. a storage rack; 73. a discharge through hole; 74. a third motor; 75. a screw feed rod; 76. a material raising plate; 91. a hot drying rack; 92. a hot drying machine; 93. a heat conducting pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-5, an industrial solid waste recycling and extruding device comprises a frame 1, an electric guide rail 2, an adjusting component 3, a cross beam frame 4, an extruding component 5, a bearing top plate 6, a feeding component 7, a feeding table 8, a hot drying component 9 and a blanking cover 10, wherein the cross beam frame 4 is installed in the center of the top end surface of the frame 1, the bearing top plate 6 is fixedly installed on the top end surface of the cross beam frame 4 through bolts, the feeding component 7 is installed on the top end surface of the bearing top plate 6, and one end of the top of the feeding component 7 is provided with a feeding platform 8, one side of the inside of the cross beam frame 4 is provided with an adjusting component 3, one end of the adjusting component 3 is connected with and mounted with an electric guide rail 2, the other side inside the cross beam frame 4 is mounted with an extrusion component 5, the inside of the cross beam frame 4 is positioned at the central end face of the frame 1 and is provided with a blanking cover 10 in an inserting way, and the other side of the top end face of the frame 1 is provided with a hot drying component 9;
adjusting part 3 includes first drive motor 31, first drive belt 32, first driven shaft 33, adjusting cylinder 34, piston rod 35, adjustable squeeze roll 36 and first casing 37, first drive motor 31 sets up the top end face one end at frame 1, first drive belt 32 is installed through the driving pulley connection in one side of first drive motor 31, first casing 37 movable mounting is in inside one side of crossbeam frame 4, and the top of first casing 37 and the terminal surface laminating of bottom respectively with bearing roof 6 and frame 1 are connected, first driven shaft 33 is installed in the inside central authorities grafting of first casing 37, and the one end of first driven shaft 33 passes through driving pulley and first drive belt 32 fixed connection, the outside fixed mounting of first driven shaft 33 has adjustable squeeze roll 36.
As an implementation mode of the utility model, the feeding assembly 7 comprises a storage box 71, a storage rack 72, a discharging through hole 73, a third motor 74, a spiral material conveying rod 75 and a material lifting plate 76, wherein the storage rack 72 is fixedly installed around the top end face of the bearing top plate 6 through bolts, the top end face of the storage rack 72 is fixedly installed with the storage box 71 through welding, a feeding table 8 is installed on one side of the top end face of the storage box 71 in an inserted mode, one side of the top of the storage box 71 is connected with the hot drying assembly 9, one side of the end face of the storage box 71 is fixedly installed with the third motor 74 through bolts, a motor shaft of the third motor 74 penetrates through the outer wall of the storage box 71 to be connected with the spiral material conveying rod 75, the discharging through hole 73 is formed in the inner wall of the bottom of one side, close to the tail end of the spiral material conveying rod 75, of the inside of the storage box 71 is connected with the material lifting plate 76 through the bottom end face of the discharging through hole 73, the bottom of the material lifting plate 76 penetrates through the bearing top plate 6 to be communicated with the inside of the cross beam frame 4, and materials to be extruded are fed The inside of pay-off subassembly 7 is poured into to platform 8, supports storage case 71 through storage frame 72, and the third motor 74 work of storage case 71 one side drives spiral conveying pole 75 through the motor shaft and rotates, and solid waste falls into and carries out the screw feed through spiral conveying pole 75 behind the inside of storage case 71, and the solid waste after the softening falls into lifting blade 76 through arranging material through-hole 73.
As an embodiment of the present invention, the heat drying assembly 9 includes a heat drying rack 91, a heat dryer 92 and a heat conducting pipe 93, the heat drying rack 91 is fixedly installed on the other side of the top end surface of the rack 1 through bolts, the heat dryer 92 is fixedly installed on the top end surface of the heat drying rack 91, one end of the top of the heat dryer 92 is connected with the heat conducting pipe 93, the other end of the heat conducting pipe 93 is inserted and installed on the top of the inner side of the material storage box 71, the heat drying assembly 9 performs heat drying softening, the heat drying rack 91 on the top of the heat conducting pipe 93 works, hot air can be injected into the material storage box 71 through the heat dryer 92, and solid waste can be heated and softened in the conveying process when being contacted with the hot air.
As an embodiment of the present invention, an adjusting groove is formed at one end of the top end surface of the frame 1, the electric guide rail 2 is fixedly installed inside the adjusting groove, a guide rail slider is connected and installed to the top of the electric guide rail 2, and the top of the guide rail slider is fixedly connected to the bottom end surface of the first transmission motor 31 through a screw.
In an embodiment of the present invention, the adjusting cylinder 34 is fixedly mounted on one side of the end surface of the cross beam frame 4 by screws, one end of the adjusting cylinder 34 is inserted with the piston rod 35, and the other end of the piston rod 35 is fixedly connected with the outer wall of the first housing 37.
As an embodiment of the present invention, the squeezing assembly 5 includes a second transmission motor 51, a second transmission belt 52, a second driven shaft 53, a fixed squeezing roller 54 and a second housing 55, the second transmission motor 51 is fixedly mounted at the other end of the top end surface of the frame 1 through screws, one side of the second transmission motor 51 is connected with the second transmission belt 52 through a transmission belt pulley, the second housing 55 is fixedly mounted at the other side of the inside of the cross beam frame 4, the second driven shaft 53 is inserted into the center of the end surface of the second housing 55, the other end of the second driven shaft 53 is connected with the second transmission belt 52 through a transmission belt pulley, the fixed squeezing roller 54 is fixedly mounted at the outside of the second driven shaft 53, and the fixed squeezing roller 54 is located at the outside of the adjustable squeezing roller 36.
The working principle of the utility model is as follows: when the device is used, according to the particle size of solid waste to be extruded, the extrusion width is adjusted through the adjusting component 3 and the extruding component 5, the electric guide rail 2 and the adjusting cylinder 34 on the top end surface of the frame 1 work simultaneously, the electric guide rail 2 drives the guide rail sliding block to enable the first transmission motor 31 to move, the adjusting cylinder 34 drives the piston rod 35 to move, the piston rod 35 pulls the first machine shell 37 to move between the two cross beam frames 4, in the moving process, the top and the bottom of the first machine shell 37 respectively slide with the end surfaces of the bearing top plate 6 and the frame 1, when the first machine shell 37 moves, the first driven shaft 33 and the adjustable extruding roller 36 are driven to move together, at the moment, the first transmission motor 31 drives the first transmission belt 32 to move, the first transmission belt 32 can not be loosened or tightened and broken, and when the distance between the adjustable extruding roller 36 and the fixed extruding roller 54 is a proper extrusion width, the electric guide rail 2 and the adjusting cylinder 34 stop working, materials to be extruded are injected into the feeding assembly 7 through the feeding table 8, are heated and softened through the heating and drying assembly 9, the storage box 71 is supported through the storage rack 72, the third motor 74 on one side of the storage box 71 works, the spiral conveying rod 75 is driven to rotate through the motor shaft, the heating and drying rack 91 on the top of the heat pipe 93 works, hot air can be injected into the storage box 71 through the heating and drying machine 92, solid waste materials fall into the storage box 71 and are spirally conveyed through the spiral conveying rod 75, the solid waste materials are contacted with the hot air and can be heated and softened in the conveying process, the softened solid waste materials fall into the material lifting plate 76 through the material discharging through holes 73, the heated and dried solid waste materials fall into the gap between the adjustable extruding roller 36 and the fixed extruding roller 54 between the second machine shell 55 and the first machine shell 37 through the material lifting plate 76 and the bearing top plate 6, first drive motor 31 and second drive motor 51 work, and first drive motor 31 drives first driven shaft 33 through first drive belt 32 and rotates for adjustable squeeze roll 36 rotates clockwise, and second drive motor 51 drives second driven shaft 53 through second drive belt 52 and rotates, makes fixed squeeze roll 54 anticlockwise rotate, and adjustable squeeze roll 36 and the fixed squeeze roll 54 of opposite directions motion can extrude the material, and the solid waste after the extrusion discharges through unloading cover 10.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The industrial solid waste recycling and extruding device is characterized by comprising a rack (1), an electric guide rail (2), an adjusting component (3), a cross beam frame (4), an extruding component (5), a bearing top plate (6), a feeding component (7), a feeding platform (8), a hot drying component (9) and a blanking cover (10), wherein the cross beam frame (4) is installed in the center of the top end face of the rack (1), the bearing top end face of the cross beam frame (4) is fixedly provided with the bearing top plate (6) through bolts, the feeding component (7) is installed on the top end face of the bearing top plate (6), the feeding platform (8) is arranged at one end of the top of the feeding component (7), the adjusting component (3) is arranged on one side inside the cross beam frame (4), the electric guide rail (2) is installed at one end of the adjusting component (3) in a connecting mode, the extruding component (5) is installed on the other side of the inside of the cross beam frame (4), a blanking cover (10) is inserted and installed in the cross beam frame (4) at the position of the central end face of the rack (1), and a hot drying assembly (9) is installed on the other side of the top end face of the rack (1);
the adjusting component (3) comprises a first transmission motor (31), a first transmission belt (32), a first driven shaft (33), an adjusting cylinder (34), a piston rod (35), an adjustable squeezing roller (36) and a first casing (37), the first transmission motor (31) is arranged at one end of the top end face of the rack (1), the first transmission belt (32) is installed on one side of the first transmission motor (31) through a transmission belt wheel in a connecting mode, the first casing (37) is movably installed on one side of the inside of the cross beam frame (4), the top and the bottom of the first casing (37) are respectively connected with the bearing top plate (6) and the end face of the rack (1) in a laminating mode, the first driven shaft (33) is installed in the center of the inside of the first casing (37) in an inserting mode, and one end of the first driven shaft (33) is fixedly connected with the first transmission belt (32) through the transmission belt wheel, and an adjustable squeezing roller (36) is fixedly arranged on the outer side of the first driven shaft (33).
2. The industrial solid waste recycling and extruding device according to claim 1, wherein the feeding assembly (7) comprises a storage box (71), a storage rack (72), a discharging through hole (73), a third motor (74), a spiral feeding rod (75) and a material lifting plate (76), the storage rack (72) is fixedly installed around the top end surface of the bearing top plate (6) through bolts, the top end surface of the storage rack (72) is fixedly installed with the storage box (71) through welding, the feeding table (8) is installed at one side of the top end surface of the storage box (71) in an inserting manner, one side of the top of the storage box (71) is connected with the hot drying assembly (9), one side of the end surface of the storage box (71) is fixedly installed with the third motor (74) through bolts, and a motor shaft of the third motor (74) penetrates through the outer wall of the storage box (71) to be connected with the spiral feeding rod (75), the material discharging device is characterized in that a material discharging through hole (73) is formed in the inner wall of the bottom of one side, close to the tail end of the spiral material conveying rod (75), of the material storing box (71), a material lifting plate (76) is connected and mounted on the end face of the bottom of the material discharging through hole (73), and the bottom of the material lifting plate (76) penetrates through the bearing top plate (6) and is communicated with the inside of the cross beam frame (4).
3. The industrial solid waste recycling and extruding device according to claim 2, wherein the hot drying assembly (9) comprises a hot drying frame (91), a hot drying machine (92) and a heat conducting pipe (93), the hot drying frame (91) is fixedly installed on the other side of the top end face of the rack (1) through a bolt, the hot drying machine (92) is fixedly installed on the top end face of the hot drying frame (91), the heat conducting pipe (93) is installed at one end of the top of the hot drying machine (92) in a connected mode, and the other end of the heat conducting pipe (93) is installed at the top of the inner side of the storage box (71) in an inserted mode.
4. The industrial solid waste recycling and extruding device according to claim 1, wherein one end of the top end surface of the frame (1) is provided with an adjusting groove, the electric guide rail (2) is fixedly installed inside the adjusting groove, the top of the electric guide rail (2) is connected with a guide rail sliding block, and the top of the guide rail sliding block is fixedly connected with the bottom end surface of the first transmission motor (31) through a screw.
5. The industrial solid waste recycling and extruding device according to claim 1, wherein the adjusting cylinder (34) is fixedly installed at one side of the end surface of the beam frame (4) by a screw, one end of the adjusting cylinder (34) is inserted with a piston rod (35), and the other end of the piston rod (35) is fixedly connected with the outer wall of the first housing (37).
6. The industrial solid waste recycling and extruding device according to claim 1, wherein the extruding component (5) comprises a second transmission motor (51), a second transmission belt (52), a second driven shaft (53), a fixed extruding roller (54) and a second casing (55), the second transmission motor (51) is fixedly installed at the other end of the top end surface of the frame (1) through screws, one side of the second transmission motor (51) is connected and installed with the second transmission belt (52) through a transmission belt pulley, the second casing (55) is fixedly installed at the other side of the inside of the cross beam frame (4), the second driven shaft (53) is installed at the center of the end surface of the second casing (55) in an inserting way, the other end of the second driven shaft (53) is connected with the second transmission belt (52) through the transmission belt pulley, the fixed extruding roller (54) is fixedly installed at the outer side of the second driven shaft (53), and the fixed squeeze roll (54) is located outside the adjustable squeeze roll (36).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120244602.7U CN216001539U (en) | 2021-01-28 | 2021-01-28 | Industrial solid waste recycling and extruding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120244602.7U CN216001539U (en) | 2021-01-28 | 2021-01-28 | Industrial solid waste recycling and extruding device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN216001539U true CN216001539U (en) | 2022-03-11 |
Family
ID=80581592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120244602.7U Active CN216001539U (en) | 2021-01-28 | 2021-01-28 | Industrial solid waste recycling and extruding device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN216001539U (en) |
-
2021
- 2021-01-28 CN CN202120244602.7U patent/CN216001539U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN216001539U (en) | Industrial solid waste recycling and extruding device | |
CN111389964A (en) | Straightening feeding equipment | |
CN109623389B (en) | A transportation forming device for electronic product shell board | |
CN212288008U (en) | Plywood slab hot press | |
CN211842216U (en) | Filter cake slitting device with adjustable slitting thickness and corresponding closed type drying machine | |
CN209836667U (en) | Squeezing device with drying function in corrugated paper production | |
CN215113563U (en) | Powder coating is with extrusion raw materials drying device | |
CN211726949U (en) | Strip phosphorus copper guipure roll-in device | |
CN212400407U (en) | Impregnating section pressing device of SMC sheet molding compound production unit | |
CN210154282U (en) | Discharging device of tube bundle dryer | |
CN221212481U (en) | Casting head of casting machine | |
CN215966991U (en) | Pole piece processing device of graphene capacitor battery | |
CN213880974U (en) | Briquetting device for straw biomass production | |
CN218086147U (en) | Upper and lower apron pressfitting subassembly | |
CN213896564U (en) | Film coating mechanism with cooling function for film coating paper | |
CN219926995U (en) | Deaeration machine that capacitive touch screen was used | |
CN215851988U (en) | Solid beverage filling machine with compression and exhaust functions | |
CN212555473U (en) | Packaging bag printing machine | |
CN221109422U (en) | High efficiency aluminium alloy automatic traction device | |
CN117295003B (en) | Automatic processing and forming device for paper cone of emergency loudspeaker | |
CN210892595U (en) | Efficient drying equipment for producing low-density SMC (sheet molding compound) material | |
CN218443207U (en) | Drying device for hot galvanizing | |
CN221112475U (en) | Extrusion device for processing filling master batch | |
CN215337587U (en) | A quick drying formula drying device for active carbon processing | |
CN214419678U (en) | Compression roller barrel-shaped vacuum filter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |