CN206152868U - Teaching is with abandonment chalk head high -efficiency processing device - Google Patents
Teaching is with abandonment chalk head high -efficiency processing device Download PDFInfo
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- CN206152868U CN206152868U CN201621164183.1U CN201621164183U CN206152868U CN 206152868 U CN206152868 U CN 206152868U CN 201621164183 U CN201621164183 U CN 201621164183U CN 206152868 U CN206152868 U CN 206152868U
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- compression cylinder
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Abstract
The utility model relates to an abandonment chalk head processing apparatus especially relates to a teaching is with abandonment chalk head high -efficiency processing device. The to -be -solved technical problem of the utility model is to provide a teaching is with abandonment chalk head high -efficiency processing device that easy operation, use are more convenient, just good to abandonment chalk head treatment effect. In order to solve the technical problem, the utility model provides a such teaching is with abandonment chalk head high -efficiency processing device is including bottom plate, n shape support, collection frame, compression cylinder, first branch, first motor, disc, head rod, second connecting rod, first piston, second piston etc. The welding of bottom plate top has n shape support, collects frame and compression cylinder, collects frame and compression cylinder and is located n shape support. The utility model provides a teaching is with abandonment chalk head high -efficiency processing device, through the rotation of second motor, rethread motor anticlockwise rotation is smashed to the chalk head of broken incasement to messenger's tup.
Description
Technical field
The present invention relates to a kind of discarded chalk end processing meanss, more particularly to a kind of discarded chalk end efficient process of teaching
Device.
Background technology
Teaching is the distinctive personnel training activity of a kind of mankind that the religion of teacher and of student are constituted.By this work
Dynamic, teacher is purposeful, planned and organized ground guiding student learns and grasps cultural and technical knowledge and technical ability, promotes student's element
Matter is improved, and makes them become the people required for society.
Chalk is instrument widely used in daily life, is for general on blackboard and writes.The chalk in ancient times is generally used
Natural Chalk is made, but other materials multiplex now replace.The composition of chalk is a kind of white depositions of calcium sulfate, no
Easily it is decomposed, granule is bigger than dust.The chalk that the country uses mainly has two kinds of common chalk and dust-free chalk, its main component
Calcium Carbonate (limestone) and calcium sulfate (Gypsum Fibrosum) are, or containing a small amount of calcium oxide.
In the education activities of school, chalk is still used in a large number at present.It is little that teacher always leaves one after chalk writes
Section header, because handss have been difficult to hold it and have recycled it to write, common practice is exactly that chalk end is thrown away, so as to waste money
Source, pollute environment, and existing discarded chalk end processing meanss exist complex operation, in-convenience in use and to discard chalk end
The shortcoming of poor processing effect, thus need badly research and development it is a kind of it is simple to operate, using more convenient and good to discarded chalk end treatment effect
Teaching with discarded chalk end high-efficient treatment device.
The content of the invention
(1) technical problem to be solved
The present invention is in order to overcome existing discarded chalk end processing meanss to there is complex operation, in-convenience in use and to useless
Abandon the shortcoming of chalk end poor processing effect, the technical problem to be solved in the present invention be to provide it is a kind of it is simple to operate, using it is more convenient,
And to discarding the good teaching of chalk end treatment effect with discarded chalk end high-efficient treatment device.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides such a teaching is filled with discarded chalk end efficient process
Put, include base plate, n shape supports, collect frame, compression cylinder, the first pole, the first motor, disk, head rod, the second company
Extension bar, first piston, second piston, outlet pipe, the first valve, hopper, the second valve, hard water pipe, the 3rd valve, L-shaped
Bar, the second pole, broken case, swash plate, rotating shaft, irony baffle plate, electric magnet, the second motor, barrel cam, ball, curved rod,
Tup, the 3rd pole, water tank, water inlet pipe, the 4th valve and check valve, base plate top is welded with n shape supports, collects frame and compression
Cylinder, collects frame and compression cylinder is located in n shape supports, and compression cylinder inner bottom part right side is welded with the first pole, and the first pole top leads to
Cross bolted mode and be connected with the first motor, the first motor installed in front has disk, and disk eccentric position is hingedly connected with
Head rod and the second connecting rod, compression cylinder internal upper part is provided with first piston, and left side is provided with second piston in compression cylinder, and first
It is articulated and connected in the middle of connecting rod top and first piston bottom, the company of being hinged in the middle of the second connecting rod left end and second piston right-hand member
Connect, first piston and second piston are slidably matched with compression cylinder, between compression cylinder left end bottom and collection frame outlet pipe be welded with,
Outlet pipe is connected with compression cylinder left end bottom with frame is collected, and outlet pipe is provided with the first valve, compression cylinder left upper part and compression
Be welded with hard water pipe between cylinder top left side, hard water pipe and compression cylinder left upper part with and contracting cylinder top left side connect, hard water pipe
The 3rd valve is provided with, compression cylinder top right side is welded with hopper, and hopper is provided with the second valve, n shape support inner tops
Right side is symmetrically welded with L-shaped pole, and broken case is welded between L-shaped pole, and n shape supports inner top left side is welded with second
Bar, broken case inner bottom part is welded with swash plate, and on broken case through hole is provided with, and bottom right side is provided with rotating shaft on broken case, sets in rotating shaft
There is irony baffle plate, irony baffle plate is connected by rotating shaft with broken case, broken case right side central is provided with electric magnet, electric magnet and irony
Baffle plate is contacted, and is crushed case and is located at hopper upper left side, and the mode that the second pole right flank bottom is bolted is connected with the
Two motors, the output shaft of the second motor is connected with barrel cam by shaft coupling, and groove milling is provided with barrel cam, and n shapes support is left
Side upper inside wall is welded with the 3rd pole, and the 3rd pole top is hingedly connected with curved rod, and curved rod left end is connected with rolling
Pearl, ball is located in groove milling, and ball coordinates with groove milling, and curved rod right-hand member is through through hole and is connected with tup, and tup is located at broken
In broken case, the 3rd pole welded top has water tank, the mode being threaded connection between water tank bottom and hard water pipe left upper portion
Water inlet pipe is connected with, water inlet pipe is connected with water tank bottom and hard water pipe left upper portion, water inlet pipe is provided with the 4th valve and unidirectional
Valve, the 4th valve is located at check valve lower section.
Preferably, also including support bar, n shape support inner tops or so two angle oblique welds has support bar.
Preferably, vibrator is also included, the mode that broken case bottom right is connected by screw is connected with vibrator.
Preferably, the first motor and the second motor are servomotor.
Preferably, the material of n shapes support is Q235 steel.
Preferably, the material for crushing case is rustless steel.
Operation principle：When initial, the first valve, the second valve, the 3rd valve and the 4th valve are closed, when will
During using the present invention, operator pour discarded chalk end in broken case into first, then start the rotation of the second motor, drive
Barrel cam is rotated, so that curved rod moves up and down, tup moves up and down therewith, is entered to crushing the discarded chalk end in case
Row is broken, and tup continues to move up and down so as to crush to crushing the discarded chalk end in case.Discarded powder in broken case
After nib is crushed completely, the second motor is closed, then open the second valve, then operator open irony baffle plate, now irony
Baffle bottom and hopper left contact, the discarded chalk crushed in broken case flows out compression cylinder top along baffle plate and hopper
Portion, after the discarded chalk crushed in broken case is all flowed in compression cylinder, closes the second valve.Started for the first motor inverse time
Pin is rotated, then opens the 4th valve and the 3rd valve, drives disc counter-clockwise to rotate, and by the second connecting rod first piston is driven
Move up and down, second piston side-to-side movement is driven by head rod, when first piston is moved downward, the water in water tank leads to
Cross water inlet pipe and hard water pipe flow enters compression cylinder top, now second piston, when second piston is moved right, is compressed to left movement
The water on cylinder top and the discarded chalk for crushing enter compression cylinder left side by hard water pipe flow, and now first piston is moved upwards, when
After adding appropriate water, the 4th valve is closed, appeal operation repeatedly just can mix to water and the discarded chalk for crushing.When
When water in compression cylinder and the discarded chalk for crushing mixed to a period of time and second piston moves right reset, first is closed
The 3rd valve of motor and closing.Then open the first valve and start the first motor and rotate counterclockwise, so as to pass through second piston
The mixture for mixing is flowed into by outlet pipe and collects inframe, after the mixture in compression cylinder is all flowed into collects inframe,
Close the first valve and the first motor.Repeatable operation above step just can be to large batch of discarded chalk end at
Reason, and the mixture that collection inframe is mixed can be used as the new chalk raw material of making.
Because also including support bar, two angle oblique welds of n shape support inner tops or so have support bar, and support bar rises
Supporting role, can extend this and use new service life.
Because also including vibrator, the mode that broken case bottom right is connected by screw is connected with vibrator, starts
Vibrator shakes, and drives broken case vibrations, so that the discarded chalk end crushed in broken case is flowed into faster in compression cylinder,
After the discarded chalk end crushed in broken case is all flowed in compression cylinder, vibrator is closed.
Because the first motor and the second motor are servomotor, its rotating speed can be preferably controlled, make operation more steady.
Because the material of n shape supports is Q235 steel, make n shape supports bearing strength big, be difficult to be worn, service life is long.
Because the material of broken case is rustless steel, the service life of the present invention can be increased.
(3) beneficial effect
A kind of teaching provided by the present invention is rotated with discarded chalk end high-efficient treatment device by the second motor, makes hammer
Head is crushed to crushing the chalk end in case, then is rotated counterclockwise by motor, makes first piston and second piston crushing
Good discarded chalk end is mixed with water in compression cylinder, so as to reached crushing effect it is good, can be discarding for crushing
The mixture that chalk end mixs homogeneously with water, mix can as make new chalk raw material, can environmental protection, the effect that economizes on resources
Really.
Description of the drawings
Fig. 1 is the first main structure diagram of the present invention.
Fig. 2 is second main structure diagram of the present invention.
Fig. 3 is the third main structure diagram of the present invention.
Labelling in accompanying drawing for：1- base plates, 2-n shape supports, 3- collects frame, and 4- compression cylinders, the poles of 5- first, 6- first is electric
Machine, 7- disks, 8- head rods, the connecting rods of 9- second, 10- first pistons, 11- second pistons, 12- outlet pipes, 13- first
Valve, 14- hoppers, the valves of 15- second, 16- hard water pipes, the valves of 17- the 3rd, 18-L shape poles, the poles of 19- second, 20- breaks
Broken case, 21- swash plates, 22- through holes, 23- rotating shafts, 24- irony baffle plates, 25- electric magnet, the motors of 26- second, 27- barrel cams,
28- groove millings, 29- balls, 30- curved rods, 31- tups, the poles of 32- the 3rd, 33- water tanks, 34- water inlet pipes, the valves of 35- the 4th
Door, 36- check valves, 37- support bars, 38- vibrators.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is further illustrated.
Embodiment 1
One kind teaching as Figure 1-3, is included base plate 1, n shapes support 2, is received with discarded chalk end high-efficient treatment device
Collection frame 3, compression cylinder 4, the first pole 5, the first motor 6, disk 7, head rod 8, the second connecting rod 9, first piston 10, the
Two pistons 11, outlet pipe 12, the first valve 13, hopper 14, the second valve 15, hard water pipe 16, the 3rd valve 17, L-shaped pole
18th, the second pole 19, broken case 20, swash plate 21, rotating shaft 23, irony baffle plate 24, electric magnet 25, the second motor 26, barrel cam
27th, ball 29, curved rod 30, tup 31, the 3rd pole 32, water tank 33, water inlet pipe 34, the 4th valve 35 and check valve 36,
The welded top of base plate 1 has n shapes support 2, collects frame 3 and compression cylinder 4, collects frame 3 and compression cylinder 4 is located in n shapes support 2, compression
The inner bottom part of cylinder 4 right side is welded with the first pole 5, and the mode that the top of the first pole 5 is bolted is connected with the first motor 6,
The installed in front of first motor 6 has disk 7, and the eccentric position of disk 7 is hingedly connected with the connecting rod 9 of head rod 8 and second, compression
The internal upper part of cylinder 4 is provided with left side in first piston 10, compression cylinder 4 and is provided with second piston 11, the top of head rod 8 and first piston
It is articulated and connected in the middle of 10 bottoms, is articulated and connected in the middle of the left end of the second connecting rod 9 and the right-hand member of second piston 11, first piston 10 and
Two pistons 11 are slidably matched with compression cylinder 4, and between the left end bottom of compression cylinder 4 and collection frame 3 outlet pipe 12, outlet pipe 12 are welded with
Connect with frame 3 is collected with the left end bottom of compression cylinder 4, outlet pipe 12 is provided with the first valve 13, the left upper part of compression cylinder 4 and compression
Be welded with hard water pipe 16 between the top left side of cylinder 4, hard water pipe 16 and the left upper part of compression cylinder 4 with and contracting cylinder top left side connect,
Hard water pipe 16 is provided with the 3rd valve 17, and the top right side of compression cylinder 4 is welded with hopper 14, and hopper 14 is provided with the second valve
The inner top of 15, n shape support 2 right side is symmetrically welded with L-shaped pole 18, and broken case 20, n shapes support 2 are welded between L-shaped pole 18
Inner top left side is welded with the second pole 19, and the broken inner bottom part of case 20 is welded with swash plate 21, and on broken case 20 through hole 22 is provided with, and breaks
Bottom right side is provided with rotating shaft 23 on broken case 20, and rotating shaft 23 is provided with irony baffle plate 24, and irony baffle plate 24 passes through rotating shaft 23 and crushes
Case 20 connects, and the broken right side central of case 20 is provided with electric magnet 25, and electric magnet 25 is contacted with irony baffle plate 24, and broken case 20 is located at down
The upper left side of hopper 14, the mode that the right flank bottom of the second pole 19 is bolted is connected with the second motor 26, the second motor
26 output shaft is connected with barrel cam 27 by shaft coupling, and groove milling 28, the inner left wall of n shapes support 2 are provided with barrel cam 27
Upper weld has the 3rd pole 32, and the top of the 3rd pole 32 is hingedly connected with curved rod 30, and the left end of curved rod 30 is connected with
Ball 29, ball 29 is located in groove milling 28, and ball 29 coordinates with groove milling 28, and the right-hand member of curved rod 30 is through through hole 22 and is connected with
Tup 31, tup 31 is located in broken case 20, and the welded top of the 3rd pole 32 has water tank 33, and the bottom of water tank 33 is left with hard water pipe 16
The mode being threaded connection between upper lateral part is connected with water inlet pipe 34, water inlet pipe 34 and the bottom of water tank 33 and the left side of hard water pipe 16
Top connects, and water inlet pipe 34 is provided with the 4th valve 35 and check valve 36, and the 4th valve 35 is located at the lower section of check valve 36.
Also including support bar 37, the inner top of n shapes support 2 or so two angle oblique welds has support bar 37.
Vibrator 38 is also included, the mode that the broken bottom right of case 20 is connected by screw is connected with vibrator 38.
First motor 6 and the second motor 26 are servomotor.
The material of n shapes support 2 is Q235 steel.
The material of broken case 20 is rustless steel.
Operation principle：When initial, the first valve 13, the second valve 15, the 3rd valve 17 and the 4th valve 35 are in closing
State, when to use the present invention, operator pour discarded chalk end in broken case 20 into first, then start second electric
Machine 26 is rotated, and drives barrel cam 27 to rotate, so that curved rod 30 moves up and down, tup 31 moves up and down therewith, to broken
Discarded chalk end in broken case 20 is crushed, and tup 31 continues to move up and down so as to enter to crushing the discarded chalk end in case 20
Row is crushed.After the discarded chalk end in broken case 20 is crushed completely, the second motor 26 is closed, then open the second valve 15, so
Afterwards operator open irony baffle plate 24, and now the bottom of irony baffle plate 24 and the left contact of hopper 14, crush in case 20 and crush
Good discarded chalk flows out the top of compression cylinder 4 along baffle plate and hopper 14, and when crushing, the interior discarded chalk for crushing of case 20 is complete
After portion is flowed in compression cylinder 4, the second valve 15 is closed.Start the first motor 6 to rotate counterclockwise, then open the 4th valve 35 and
Three valves 17, drive disk 7 to rotate counterclockwise, and drive first piston 10 to move up and down by the second connecting rod 9, connect by first
Extension bar 8 drives the side-to-side movement of second piston 11, and when first piston 10 is moved downward, the water in water tank 33 passes through the He of water inlet pipe 34
Hard water pipe 16 flows into the top of compression cylinder 4, and now second piston 11 is to left movement, when second piston 11 is moved right, compression cylinder 4
The water on top and the discarded chalk for crushing flow into the left side of compression cylinder 4 by hard water pipe 16, and now first piston 10 is moved upwards,
After appropriate water is added, the 4th valve 35 is closed, appeal operation repeatedly just can be mixed to water and the discarded chalk for crushing
Close.When the water in compression cylinder 4 and the discarded chalk for crushing mixed to a period of time and second piston 11 moves right reset,
Close the first motor 6 and close the 3rd valve 17.Then open the first valve 13 and start the first motor 6 and rotate counterclockwise, from
And pass through second piston 11 and the mixture for mixing is flowed in collection frame 3 by outlet pipe 12, the mixture in compression cylinder 4
All flow into after collecting in frame 3, close the first valve 13 and the first motor 6.Repeatable operation above step just can be to big
The discarded chalk end of batch is processed, and the mixture mixed in collection frame 3 can be used as the new chalk raw material of making.
Because also including support bar 37, two angle oblique welds of inner top of n shapes support 2 or so have support bar 37,
Strut 37 plays a supportive role, and can extend this and use new service life.
Because also including vibrator 38, the mode that the broken bottom right of case 20 is connected by screw is connected with vibrator
38, start vibrator 38 and shake, drive broken case 20 to shake, so that the discarded chalk end crushed in broken case 20 is faster
Flow in compression cylinder 4, after the discarded chalk end crushed in broken case 20 is all flowed in compression cylinder 4, close vibrator 38.
Because the first motor 6 and the second motor 26 are servomotor, its rotating speed can be preferably controlled, make operation more steady.
Because the material of n shapes support 2 is Q235 steel, make the bearing strength of n shapes support 2 big, be difficult to be worn, service life
It is long.
Because the material of broken case 20 is rustless steel, the service life of the present invention can be increased.
Embodiment described above only expresses the preferred embodiment of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations, improvement can also be made and substituted, these belong to this
Bright protection domain.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (6)
1. a kind of teaching is used and discards chalk end high-efficient treatment device, it is characterised in that included base plate (1), n shape supports (2), received
Collection frame (3), compression cylinder (4), the first pole (5), the first motor (6), disk (7), head rod (8), the second connecting rod
(9), first piston (10), second piston (11), outlet pipe (12), the first valve (13), hopper (14), the second valve
(15), hard water pipe (16), the 3rd valve (17), L-shaped pole (18), the second pole (19), broken case (20), swash plate (21), turn
Axle (23), irony baffle plate (24), electric magnet (25), the second motor (26), barrel cam (27), ball (29), curved rod
(30), tup (31), the 3rd pole (32), water tank (33), water inlet pipe (34), the 4th valve (35) and check valve (36), base plate
(1) welded top has n shape supports (2), collects frame (3) and compression cylinder (4), collects frame (3) and compression cylinder (4) positioned at n shape supports
(2) in, compression cylinder (4) inner bottom part right side is welded with the first pole (5), the mode that the first pole (5) top is bolted
The first motor (6) is connected with, the first motor (6) installed in front has disk (7), and disk (7) eccentric position is hingedly connected with first
Connecting rod (8) and the second connecting rod (9), compression cylinder (4) internal upper part is provided with left side in first piston (10), compression cylinder (4) and is provided with
Second piston (11), is articulated and connected in the middle of head rod (8) top and first piston (10) bottom, and the second connecting rod (9) is left
It is articulated and connected in the middle of end and second piston (11) right-hand member, first piston (10) and second piston (11) are slided with compression cylinder (4) and matched somebody with somebody
Close, outlet pipe (12), outlet pipe (12) and compression cylinder (4) left end are welded between compression cylinder (4) left end bottom and collection frame (3)
Bottom connects with frame (3) is collected, and outlet pipe (12) is provided with the first valve (13), compression cylinder (4) left upper part and compression cylinder (4)
Hard water pipe (16) is welded between top left side, hard water pipe (16) connects with compression cylinder (4) left upper part and with contracting cylinder top left side
Logical, hard water pipe (16) is provided with the 3rd valve (17), and compression cylinder (4) top right side is welded with hopper (14), hopper (14)
The second valve (15) is provided with, n shape support (2) inner tops right side is symmetrically welded with L-shaped pole (18), between L-shaped pole (18)
Broken case (20) is welded with, n shape support (2) inner tops left side is welded with the second pole (19), crushes the welding of case (20) inner bottom part
There is swash plate (21), on broken case (20) through hole (22) is provided with, bottom right side is provided with rotating shaft (23), rotating shaft (23) on broken case (20)
Irony baffle plate (24) is provided with, irony baffle plate (24) is connected by rotating shaft (23) with broken case (20), in crushing case (20) right side
Portion is provided with electric magnet (25), and electric magnet (25) is contacted with irony baffle plate (24), crushes case (20) positioned at hopper (14) upper left side,
The mode that second pole (19) right flank bottom is bolted is connected with the second motor (26), the output of the second motor (26)
Axle is connected with barrel cam (27) by shaft coupling, and groove milling (28), n shape support (2) inner left walls are provided with barrel cam (27)
Upper weld has the 3rd pole (32), and the 3rd pole (32) top is hingedly connected with curved rod (30), and curved rod (30) is left
End is connected with ball (29), and in groove milling (28), ball (29) coordinates ball (29) with groove milling (28), and curved rod (30) is right
End is through through hole (22) and is connected with tup (31), and tup (31) is interior positioned at broken case (20), the 3rd pole (32) welded top
There is water tank (33), the mode being threaded connection between water tank (33) bottom and hard water pipe (16) left upper portion is connected with water inlet pipe
(34), water inlet pipe (34) is connected with water tank (33) bottom and hard water pipe (16) left upper portion, and water inlet pipe (34) is provided with the 4th valve
Door (35) and check valve (36), the 4th valve (35) is positioned at check valve (36) lower section.
2. a kind of teaching according to claim 1 is used and discards chalk end high-efficient treatment device, it is characterised in that also included
Support bar (37), n shape support (2) inner tops or so two angle oblique welds have support bar (37).
3. a kind of teaching according to claim 1 is used and discards chalk end high-efficient treatment device, it is characterised in that also included
Vibrator (38), the mode that broken case (20) bottom right is connected by screw is connected with vibrator (38).
4. a kind of teaching according to claim 1 is used and discards chalk end high-efficient treatment device, it is characterised in that the first motor
And the second motor (26) is servomotor (6).
5. a kind of teaching according to claim 1 is used and discards chalk end high-efficient treatment device, it is characterised in that n shape supports
(2) material is Q235 steel.
6. a kind of teaching according to claim 1 is used and discards chalk end high-efficient treatment device, it is characterised in that broken case
(20) material is rustless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621164183.1U CN206152868U (en) | 2016-10-25 | 2016-10-25 | Teaching is with abandonment chalk head high -efficiency processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621164183.1U CN206152868U (en) | 2016-10-25 | 2016-10-25 | Teaching is with abandonment chalk head high -efficiency processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206152868U true CN206152868U (en) | 2017-05-10 |
Family
ID=58656284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621164183.1U Expired - Fee Related CN206152868U (en) | 2016-10-25 | 2016-10-25 | Teaching is with abandonment chalk head high -efficiency processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206152868U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391189A (en) * | 2016-10-25 | 2017-02-15 | 林姝霓 | Efficient abandoned chalk end treatment device for teaching |
| CN111701645A (en) * | 2020-06-30 | 2020-09-25 | 菏泽畅千机械设备有限公司 | Crushing apparatus for food production |
| CN115320275A (en) * | 2022-08-29 | 2022-11-11 | 刘耕 | Blackboard chalk groove |
-
2016
- 2016-10-25 CN CN201621164183.1U patent/CN206152868U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391189A (en) * | 2016-10-25 | 2017-02-15 | 林姝霓 | Efficient abandoned chalk end treatment device for teaching |
| CN106391189B (en) * | 2016-10-25 | 2018-07-13 | 潘小秋 | A kind of discarded chalk end high-efficient treatment device of teaching |
| CN111701645A (en) * | 2020-06-30 | 2020-09-25 | 菏泽畅千机械设备有限公司 | Crushing apparatus for food production |
| CN111701645B (en) * | 2020-06-30 | 2021-08-03 | 西南大学 | Crushing apparatus for food production |
| CN115320275A (en) * | 2022-08-29 | 2022-11-11 | 刘耕 | Blackboard chalk groove |
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