CN217318555U - Novel homogenizing equipment for ceramic green brick powder homogenizing production line - Google Patents
Novel homogenizing equipment for ceramic green brick powder homogenizing production line Download PDFInfo
- Publication number
- CN217318555U CN217318555U CN202220199597.7U CN202220199597U CN217318555U CN 217318555 U CN217318555 U CN 217318555U CN 202220199597 U CN202220199597 U CN 202220199597U CN 217318555 U CN217318555 U CN 217318555U
- Authority
- CN
- China
- Prior art keywords
- device main
- motor
- homogenizing
- main body
- production line
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 59
- 239000000919 ceramic Substances 0.000 title claims abstract description 18
- 239000011449 brick Substances 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000265 homogenisation Methods 0.000 claims abstract description 20
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims description 27
- 238000004140 cleaning Methods 0.000 claims description 23
- 238000012216 screening Methods 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000007873 sieving Methods 0.000 description 12
- 230000000717 retained effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model discloses a novel ceramic embryo brick powder homogenization production line homogenization equipment relates to ceramic embryo brick powder homogenization technical field, including the device main part, the bottom intermediate position department of device main part installs first motor, and the output of first motor is connected with and runs through to the inside first pivot of device main part. The utility model discloses a be provided with the second motor, the external gear, the internal gear, the clearance brush, first spout and first slider, when carrying out the homogenization to the powder, the staff alright start the second motor, the second motor passes through the drive shaft and drives the external gear and rotate, the external gear drives internal gear and rotates, the internal gear drives first slider and slides in first spout, in order to promote the stability of internal gear, the internal gear will drive two clearance brushes at the pivoted in-process and rotate, contact through the inner wall of two clearance brushes and device main part, make the clearance brush will clean the powder of depending on the device main part inner wall at the pivoted in-process, thereby the waste of powder resource has been reduced.
Description
Technical Field
The utility model relates to a ceramic embryo brick powder homogenization technical field specifically is a novel ceramic embryo brick powder homogenization production line homogenization equipment.
Background
The homogenization is a process of reducing the fluctuation amplitude of chemical components of the material and enabling the chemical components of the material to be uniform by adopting certain technological measures, in the ceramic blank preparation industry, required raw materials need to be crushed and ground into powdery materials, then the powdery materials are homogenized, and the homogenization effect directly influences the quality of products, so that the realization of good homogenization effect is always the target pursued by each production enterprise.
According to the chinese patent with publication number CN211030599U, a novel homogenizing device for ceramic green brick powder homogenizing production line is disclosed, comprising a homogenizing box, a sieving net, a stirring device and a rotating device, wherein four groups of supporting legs are fixed at the bottom of the homogenizing box, the homogenizing box is internally divided into a storage cavity and a homogenizing cavity from top to bottom, the storage cavity and the homogenizing cavity are separated through the sieving net, and the sieving net is installed at the top of the homogenizing box.
The utility model can drive the stirring device to stir in a staggered and opposite way in the homogenization process through the matching among the first rotating ring, the second rotating ring, the transmission disc, the rotating rod and the stirring device which are arranged in the fixed cylinder, thereby leading the powder to be mixed and homogenized more quickly; when the device homogenizes powder, the powder is easy to scatter around due to the action of the stirring rod, so that part of the powder is easy to attach to the inner wall of the device main body, and a worker is difficult to collect and treat the powder attached to the inner wall when collecting the homogenized powder, thereby causing waste of powder resources; simultaneously, when the device is sieving the powder through the screening net, because the large granule powder will stop on the screening net, long-time screening process to the powder is detained in the large granule powder on the screening net and is led to the fact the jam to the screening net easily, has leaded to reducing the screening efficiency to the powder.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a novel ceramic embryo brick powder homogenization production line homogenization equipment to solve the powder and depend on easily in homogenization process that device main part inner wall is difficult to the waste and the screening net that leads to the powder resource of clearance and carry out the problem that the in-process blockked up easily to the powder for a long time.
In order to achieve the above object, the utility model provides a following technical scheme: a novel homogenizing device for a ceramic green brick powder homogenizing production line comprises a device main body, wherein a first motor is installed at the middle position of the bottom of the device main body, the output end of the first motor is connected with a first rotating shaft penetrating into the device main body, stirring blades are installed on two sides of the outer surface of the first rotating shaft, a second motor is installed on one side of the top of the device main body, an outer gear is installed at the output end of the second motor through a driving shaft, a first sliding groove is formed in the device main body, first sliding blocks are installed on two sides of the inner portion of the first sliding groove, an inner gear is installed between the two first sliding blocks, cleaning brushes are fixed on two sides of the bottom of the inner gear, a feeding cylinder is installed at the middle position of the top of the device main body, second sliding grooves are formed in two sides of the inner portion of the feeding cylinder, and springs are installed in the two second sliding grooves, two the second slider is all installed on the top of spring, two install the screening net between the second slider, the recovery drum is installed to the top opposite side of device main part, be connected with the collecting pipe between recovery drum and the feeding section of thick bamboo, the third motor is installed at the top of recovery drum, the output of third motor is connected with and runs through to the inside second pivot of recovery drum, the surface mounting of second pivot has helical blade, one side top of recovery drum is connected with row's material pipe.
Preferably, the external gear is engaged with an internal gear having an outer diameter smaller than an inner diameter of the device body.
Preferably, the cleaning brushes are arranged in two numbers, the two cleaning brushes are symmetrically distributed along the central line of the longitudinal axis of the device main body, and the cleaning brushes are in contact with the inner wall of the device main body.
Preferably, the internal gear is connected with the first sliding groove in a sliding mode through the first sliding block.
Preferably, the screening net is connected with the second chute in a sliding mode through the second sliding block, and one end of the screening net inclines downwards along the direction of the recovery cylinder.
Preferably, an operation panel is installed on one side of the device main body, and the operation panel is electrically connected with the first motor, the second motor and the third motor respectively.
Preferably, the discharging pipe is installed to bottom one side of device main part, the stabilizer blade is all installed around the bottom of device main part.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a be provided with the second motor, the external gear, the internal gear, the cleaning brush, first spout and first slider, when homogenizing the powder, the staff can start the second motor through operating panel, the second motor drives the external gear through the drive shaft and rotates, the external gear drives the internal gear and rotates, thereby make the internal gear drive first slider and slide in the first spout, in order to promote the stability of internal gear, the internal gear will drive two cleaning brushes and rotate in the process of rotating, contact with the inner wall of device main part through two cleaning brushes, thereby make the cleaning brush can effectively clean the powder that depends on the device main part inner wall in the process of rotating, and then reduced the waste of powder resource;
2. the utility model discloses a be provided with the recovery cylinder, the third motor, the collecting pipe, the second pivot, helical blade and row's material pipe, at the in-process of screening the powder through the screening net, make qualified powder to carry out the homogenization through screening net entering into to the device main part in, unqualified powder will be detained on the screening net, the direction downward sloping of recovery cylinder is followed to one end through the screening net, thereby make and detain in the powder that the screening was netted will remove to the recovery cylinder through the collecting pipe, the staff alright start the third motor through operating panel this moment, the third motor drives the second pivot and rotates, the second pivot drives helical blade and rotates, thereby make helical blade upwards transport the powder, the staff alright through arranging the material pipe and carry out the collection processing to this part powder.
Drawings
FIG. 1 is a schematic view of a front cross-sectional structure of the device body of the present invention;
FIG. 2 is a schematic view of a front cross-sectional structure of the recycling bin of the present invention;
fig. 3 is an enlarged view of a portion a of fig. 1 according to the present invention;
fig. 4 is an enlarged view of the point B in fig. 1 according to the present invention.
In the figure: 1. a device main body; 2. an operation panel; 3. a first motor; 4. a discharge pipe; 5. a first rotating shaft; 6. stirring blades; 7. cleaning a brush; 8. an internal gear; 9. an outer gear; 10. a second motor; 11. a feeding cylinder; 12. screening the net; 13. a recovery cylinder; 14. a helical blade; 15. a third motor; 16. a collection pipe; 17. a second rotating shaft; 18. a discharge pipe; 19. a first slider; 20. a first chute; 21. a second chute; 22. a spring; 23. and a second slider.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention according to its overall structure.
Referring to fig. 1-4, a novel homogenizing device for a ceramic green brick powder homogenizing production line comprises a device main body 1, an operation panel 2, a first motor 3, a discharge pipe 4, a first rotating shaft 5, a stirring blade 6, a cleaning brush 7, an internal gear 8, an external gear 9, a second motor 10, a feeding cylinder 11, a sieving net 12, a recovery cylinder 13, a helical blade 14, a third motor 15, a collecting pipe 16, a second rotating shaft 17, a discharging pipe 18, a first sliding block 19, a first sliding groove 20, a second sliding groove 21, a spring 22 and a second sliding block 23; the device comprises a device main body 1, a first motor 3 is arranged at the middle position of the bottom of the device main body 1, the output end of the first motor 3 is connected with a first rotating shaft 5 penetrating into the device main body 1, stirring blades 6 are arranged on two sides of the outer surface of the first rotating shaft 5, a second motor 10 is arranged on one side of the top of the device main body 1, an outer gear 9 is arranged at the output end of the second motor 10 through a driving shaft, a first chute 20 is arranged in the device main body 1, first sliding blocks 19 are arranged on two sides of the inside of the first chute 20, an inner gear 8 is arranged between the two first sliding blocks 19, cleaning brushes 7 are fixed on two sides of the bottom of the inner gear 8, a feeding barrel 11 is arranged at the middle position of the top of the device main body 1, second chutes 21 are arranged on two sides of the inside of the feeding barrel 11, springs 22 are arranged in the two second chutes 21, and second sliding blocks 23 are arranged on the top ends of the two springs 22, install between two second sliders 23 and sieve the net 12, recovery cylinder 13 is installed to the top opposite side of device main part 1, be connected with collecting pipe 16 between recovery cylinder 13 and the feed cylinder 11, third motor 15 is installed at the top of recovery cylinder 13, the output of third motor 15 is connected with the second pivot 17 that runs through to recovery cylinder 13 inside, the surface mounting of second pivot 17 has helical blade 14, one side top of recovery cylinder 13 is connected with row material pipe 18, so that the staff collects the powder in the recovery cylinder 13 through arranging material pipe 18.
Specifically, please refer to fig. 1 and 3, the external gear 9 is engaged with the internal gear 8, and the external diameter of the internal gear 8 is smaller than the internal diameter of the device body 1; the cleaning brushes 7 are arranged in two numbers, the two cleaning brushes 7 are symmetrically distributed along the central line of the longitudinal axis of the device main body 1, and the cleaning brushes 7 are in contact with the inner wall of the device main body 1.
By adopting the technical scheme, the outer gear 9 drives the inner gear 8 to rotate in the device main body 1, so that the inner gear 8 drives the two cleaning brushes 7 to rotate; so that the two cleaning brushes 7 can effectively clean the powder attached to the inner wall of the device main body 1, thereby reducing the waste of powder resources.
Specifically, please refer to fig. 1, fig. 3 and fig. 4, the internal gear 8 is slidably connected to the first sliding chute 20 through the first sliding block 19; the screening net 12 is connected with the second chute 21 in a sliding way through a second sliding block 23, and one end of the screening net 12 inclines downwards along the direction of the recovery cylinder 13.
By adopting the technical scheme, the inner gear 8 drives the first sliding block 19 to slide in the first sliding groove 20, so that the stability of the inner gear 8 is improved; the sieving net 12 drives the second slide block 23 to slide in the second chute 21, so that the powder retained on the top of the sieving net 12 can move into the recovery cylinder 13.
Specifically, please refer to fig. 1-2, an operation panel 2 is installed at one side of the device main body 1, and the operation panel 2 is electrically connected to the first motor 3, the second motor 10 and the third motor 15 respectively; a discharging pipe 4 is installed on one side of the bottom of the device main body 1, and supporting legs are installed on the periphery of the bottom of the device main body 1.
By adopting the technical scheme, the first motor 3, the second motor 10 and the third motor 15 can be conveniently opened or closed by a worker through the operation panel 2; the staff of being convenient for collects the processing through discharging pipe 4 to the powder after the homogenization, and the stabilizer blade makes device main part 1 stability more simultaneously.
The working principle is as follows: firstly, the worker pours the powder into the feeding cylinder 11 to sieve the powder under the action of the sieving net 12, so that the qualified powder enters the device main body 1 through the sieving net 12 to be homogenized, the unqualified powder is retained on the sieving net 12 and inclines downwards along the direction of the recovery cylinder 13 through one end of the sieving net 12, so that the powder retained on the sieving net 12 moves towards the recovery cylinder 13 through the collecting pipe 16, at the moment, the worker can start the third motor 15 through the operation panel 2, the third motor 15 drives the second rotating shaft 17 to rotate, the second rotating shaft 17 drives the helical blade 14 to rotate, so that the helical blade 14 conveys the powder upwards, the worker can collect and treat the part of powder through the discharging pipe 18, then the worker can start the first motor 3 through the operation panel 2, the first motor 3 drives the first rotating shaft 5 to rotate, first pivot 5 drives stirring leaf 6 and rotates, thereby make stirring leaf 6 stir the homogenization to the powder of 1 inside of device main part, and simultaneously, the staff passes through operating panel 2 and starts second motor 10, second motor 10 drives external gear 9 through the drive shaft and rotates, external gear 9 drives internal gear 8 and rotates, thereby make internal gear 8 drive first slider 19 and slide in first spout 20, with the stability that promotes internal gear 8, internal gear 8 will drive two cleaning brushes 7 at the pivoted in-process and rotate, inner wall through two cleaning brushes 7 and device main part 1 contacts, thereby make cleaning brush 7 can effectually clean the powder of depending on 1 inner wall of device main part at the pivoted in-process, and finally, powder accessible discharging pipe 4 after the homogenization is collected.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a novel ceramic embryo brick powder homogenization production line homogenization equipment, includes device main part (1), its characterized in that: the device is characterized in that a first motor (3) is installed at the middle position of the bottom of the device main body (1), the output end of the first motor (3) is connected with a first rotating shaft (5) penetrating through the inside of the device main body (1), stirring blades (6) are installed on two sides of the outer surface of the first rotating shaft (5), a second motor (10) is installed on one side of the top of the device main body (1), an outer gear (9) is installed at the output end of the second motor (10) through a driving shaft, a first sliding chute (20) is formed in the inside of the device main body (1), first sliding blocks (19) are installed on two sides of the inside of the first sliding chute (20), an inner gear (8) is installed between the two first sliding blocks (19), cleaning brushes (7) are fixed on two sides of the bottom of the inner gear (8), and a feeding barrel (11) is installed at the middle position of the top of the device main body (1), second spout (21), two have all been seted up to the inside both sides of feeding section of thick bamboo (11) spring (22), two are all installed to the inside of second spout (21) second slider (23), two are all installed on the top of spring (22) between second slider (23) screening net (12), recovery section of thick bamboo (13) are installed to the top opposite side of device main part (1), be connected with collecting pipe (16) between recovery section of thick bamboo (13) and feeding section of thick bamboo (11), third motor (15) are installed at the top of recovery section of thick bamboo (13), the output of third motor (15) is connected with and runs through to inside second pivot (17) of recovery section of thick bamboo (13), the surface mounting of second pivot (17) has helical blade (14), one side top of recovery section of thick bamboo (13) is connected with row material pipe (18).
2. The novel homogenizing device of the ceramic green brick powder homogenizing production line according to claim 1, characterized in that: the external gear (9) is meshed with the internal gear (8), and the external diameter of the internal gear (8) is smaller than the internal diameter of the device main body (1).
3. The novel homogenizing device of the ceramic green brick powder homogenizing production line according to claim 1, characterized in that: the cleaning brushes (7) are arranged in two numbers, the two cleaning brushes (7) are symmetrically distributed along the central line of the longitudinal axis of the device main body (1), and the cleaning brushes (7) are in contact with the inner wall of the device main body (1).
4. The novel homogenizing device of the ceramic green brick powder homogenizing production line according to claim 1, characterized in that: the internal gear (8) is connected with the first sliding groove (20) in a sliding mode through the first sliding block (19).
5. The novel homogenizing device of the ceramic green brick powder homogenizing production line according to claim 1, characterized in that: the screening net (12) is connected with the second sliding groove (21) in a sliding mode through the second sliding block (23), and one end of the screening net (12) inclines downwards along the direction of the recovery cylinder (13).
6. The novel homogenizing device for the ceramic green brick powder homogenizing production line according to claim 1, characterized in that: operation panel (2) are installed to one side of device main part (1), operation panel (2) respectively with first motor (3), second motor (10) and third motor (15) electric connection.
7. The novel homogenizing device of the ceramic green brick powder homogenizing production line according to claim 1, characterized in that: discharging pipe (4) are installed to bottom one side of device main part (1), the stabilizer blade is all installed all around to the bottom of device main part (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202220199597.7U CN217318555U (en) | 2022-01-25 | 2022-01-25 | Novel homogenizing equipment for ceramic green brick powder homogenizing production line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202220199597.7U CN217318555U (en) | 2022-01-25 | 2022-01-25 | Novel homogenizing equipment for ceramic green brick powder homogenizing production line |
Publications (1)
Publication Number | Publication Date |
---|---|
CN217318555U true CN217318555U (en) | 2022-08-30 |
Family
ID=82995194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202220199597.7U Expired - Fee Related CN217318555U (en) | 2022-01-25 | 2022-01-25 | Novel homogenizing equipment for ceramic green brick powder homogenizing production line |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN217318555U (en) |
-
2022
- 2022-01-25 CN CN202220199597.7U patent/CN217318555U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN210449373U (en) | Powder metallurgy raw material stirring screen cloth | |
CN210449386U (en) | Corn grinder is used in corn steep liquor production | |
CN202238601U (en) | Circulating sieve separation equipment | |
CN114177991B (en) | Limestone homogenization treatment system and treatment method | |
CN215235915U (en) | Raw materials sieving mechanism for biological feed production | |
CN217318555U (en) | Novel homogenizing equipment for ceramic green brick powder homogenizing production line | |
CN210646624U (en) | Superfine powder production device | |
CN211051910U (en) | Vibrating screen device is used in processing of container bamboo wood composite sheet | |
CN216544149U (en) | Anti-blocking double-screw granulator discharging mechanism | |
CN116351691A (en) | Recycled aggregate separating device for construction waste | |
CN214487752U (en) | Fungus sediment separator is used in agricultural earthworm cultivation | |
CN210250595U (en) | Traditional chinese medicine pill machine | |
CN210701091U (en) | Filtering and collecting device for metal powder | |
CN112844570A (en) | Can screen reducing mechanism for agricultural product processing in grades to material | |
CN206566806U (en) | Stable coal-pressing ball material stirring system | |
CN220760003U (en) | Raw material adding device for manufacturing water reducer | |
CN213471812U (en) | Wire drawing cutting and collecting device for color master batch production | |
CN221386559U (en) | Vibration feeder for single wafer production | |
CN217616021U (en) | Pig feed finished product material grading plant | |
CN217341546U (en) | A sieve broken all-in-one for nodulizer | |
CN219784484U (en) | Anti-sinking stirrer | |
CN218139211U (en) | Material filtering device | |
CN216322313U (en) | Alloy powder scattering and discharging device | |
CN214636952U (en) | Vertical milling machine is used in active carbon production | |
CN216906733U (en) | Walnut processing is with broken shell device with scarfing cinder function |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220830 |