CN207126782U - A kind of grit matrix cleaning device - Google Patents
A kind of grit matrix cleaning device Download PDFInfo
- Publication number
- CN207126782U CN207126782U CN201721031392.3U CN201721031392U CN207126782U CN 207126782 U CN207126782 U CN 207126782U CN 201721031392 U CN201721031392 U CN 201721031392U CN 207126782 U CN207126782 U CN 207126782U
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- stirring
- casing
- cleaning device
- stirring container
- grit
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Abstract
The utility model discloses a kind of grit matrix cleaning device, it is related to sand culture technical field, including support, drive device and Rose Box, stirring container is connected with support, agitating shaft is provided with stirring container, agitating shaft is provided with stirring vane, stirring container open top, and the top open part of stirring container and is provided with removable screen cloth；Drive device is arranged on support, and one end of the output end of drive device and agitating shaft connects；Rose Box includes the first casing and the second casing, and the first casing can be positioned in the second casing, and offers apopore in the side wall of the first casing.The grit matrix cleaning device, can remove big grade chad, clean the soluble nutrient for adhering to its surface, the gritty soil earth matrix after cleaning is met the scientific research and testing requirements such as nutrient stress, culture matrix grade size homogeneity, greatly improve scientific research efficiency.
Description
Technical field
Sand culture technical field is the utility model is related to, more particularly to a kind of grit matrix cleaning device.
Background technology
Sand culture is one kind of soil-less culture, general by the use of river sand as growth substrate, and nutrient solution is supplied in the form of drip irrigation
For needed for plant growth.The grit of sand culture is preferably particle diameter 0.5-3.0 millimeter scopes, and sand culture is because its matrix is easy to get, is produced into
This is low, has been widely used in the indoor pot experiment of agriculture and forestry.Grit matrix should sieved before, big to reject
Gravel；Meanwhile grit matrix removes the soluble nutrient of grit surface attachment using preceding being cleaned, and accords with grit matrix
Close the homogeneous scientific research and testing requirement of nutrient stress, culture matrix particle size.Grit matrix in existing simulated test uses
Artificial cleaning, efficiency is low and grit after cleaning is difficult to meet experiment demand；Architectural engineering industry also has some to clean river
Husky device, but the river sand particle diameter or nutrient content that wash out all are difficult to meet scientific research demand, and device is excessive, washes husky effect
Rate is low, manpower consumption is big, is not suitable for indoor greenhouse operation.
Utility model content
The purpose of this utility model is to provide a kind of easy to operate, grit for washing husky efficiency high, disclosure satisfy that experiment demand
Matrix cleaning device.
To achieve the above object, the utility model provides following scheme：
The utility model provides a kind of grit matrix cleaning device, including a support, a drive device and a Rose Box,
A stirring container is connected with support, is provided with an agitating shaft in stirring container, agitating shaft is provided with some stirring vanes, stirred
Container top opening is mixed, and the top open part of stirring container is provided with a removable screen cloth；Drive device is arranged on support, and
The output end of drive device and one end of agitating shaft connect, and drive device is used to drive agitating shaft to rotate；Rose Box includes first
Casing and the second casing, the first casing can be positioned in the second casing, and offer apopore in the side wall of the first casing.
Preferably, the bottom surface of the stirring container is arcwall face, and the stirring container is hung down with the arcwall face axial direction
Straight both ends of the surface are plane, and axial direction of the agitating shaft along the arcwall face is set, and the edge of the stirring vane is in arc
Shape.
Preferably, each stirring vane passes through connecting rod and the stirring axis connection.
Preferably, the both ends of each stirring vane pass through a connecting rod and the stirring axis connection；The paddle
Piece is interspersed in the both sides of the agitating shaft.
Preferably, the drive device includes motor, the first transmission device and the second transmission device, the first transmission dress
Put includes driving gear and driven gear, the electricity including driving pulley, driven pulley and endless belt, the second conveyer
The output shaft of machine is connected with the driving pulley, and the driving pulley is connected by the endless belt with the driven pulley, institute
State driven pulley to be connected with the driving gear by a connecting shaft, the driving gear engages with the driven gear, described
Driven gear drives the agitating shaft to rotate.
Preferably, in addition to a receptacle fixture, the receptacle fixture includes latch pillar and latch, described to insert
Pin pillar is arranged on the support perpendicular to ground, and the side wall on the stirring container top is provided with the first pin hole, described
The position that latch pillar top corresponds to first pin hole is provided with the second pin hole, and the latch is pluggable described first
In pin hole and second pin hole, the end of the latch is provided with spacing spheroid, and the diameter of the spacing spheroid is more than institute
State the internal diameter of the first pin hole and second pin hole；Also include a mixing control device, the mixing control device and the electricity
Mechatronics.
Preferably, spout hole is offered in the side wall on the stirring container top, screen pack, institute are provided with the spout hole
It is identical with the aperture of the removable screen cloth to state the aperture of screen pack, an overflow pipe is connected with the spout hole.
Preferably, the first waterproof cover is provided with above the motor, first transmission device is covered with the second bucker, institute
State the second transmission device and be covered with the 3rd bucker.
Preferably, the bottom of the corner of the support is provided with a pulley, and an antiskid valve is equipped with each pulley.
Preferably, it is provided with handle on first casing and second casing.
The utility model achieves following technique effect relative to prior art：
Grit matrix cleaning device provided by the utility model, for cleaning river sand and the river sand cleaned being used for into interior
Grit matrix culture plant in simulated experiment, grit matrix cleaning device eliminate big grade chad by removable screen cloth,
And the soluble nutrient for adhering to its surface has been cleaned by the stirring and washing in stirring container, it instead of artificial hand traditionally
Wash, than it is traditional it is artificial wash husky more convenient, greatly reduce the labour for washing sand, make the gritty soil earth after cleaning
Matrix meets the scientific research and testing requirements such as nutrient stress, culture matrix grade size homogeneity, greatly improves scientific research efficiency, sand after washing
Nutrient content is extremely low, horizontal up to trace；Whole experimental rig is environment friendly and pollution-free, simple in construction, cheap, simple operation.
Husky particle size is different, and its water conservation gas permeability is also different, has a great impact to cultivation effect.The utility model is provided with removable
Dynamic screen cloth, laboratory technician can need to adjust the slot size of removable screen cloth according to experiment.Grit matrix provided by the utility model
Cleaning device is small, not high to the physical fitness requirement of laboratory technician, and man, female laboratory technician can operate freely, and bottom is provided with the convenient shifting of pulley
It is dynamic, and husky efficiency high is washed, quality meets experiment demand.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is grit matrix cleaning device structural representation provided by the utility model；
Fig. 2 is the structural representation of the Rose Box of grit matrix cleaning device provided by the utility model；
Fig. 3 is the structural representation of the removable screen cloth of grit matrix cleaning device provided by the utility model；
In figure：1- stirring containers；2- may move screen cloth；3- spout holes；4- overflow pipes；5- agitating shafts；6- stirring vanes；7-
Support；8- pulleys；9- antiskid valves；10- motors；The waterproof covers of 11- first；12- latches；13- mixing control devices；14- first is driven
Device；The casings of 15- second；The casings of 16- first；17- apopores；The waterproof covers of 18- second；The waterproof covers of 19- the 3rd；20- second is passed
Dynamic device；21- screens flange, 22- connecting rods；23- bearing blocks；24- latch pillars.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The purpose of this utility model is to provide a kind of easy to operate, grit for washing husky efficiency high, disclosure satisfy that experiment demand
Matrix cleaning device.
The utility model provides a kind of grit matrix cleaning device, including a support, a drive device and a Rose Box,
A stirring container is connected with support, is provided with an agitating shaft in stirring container, agitating shaft is provided with some stirring vanes, stirred
Container top opening is mixed, and the top open part of stirring container is provided with a removable screen cloth；Drive device is arranged on support, and
The output end of drive device and one end of agitating shaft connect, and drive device is used to drive agitating shaft to rotate；Rose Box includes first
Casing and the second casing, the first casing can be positioned in the second casing, and offer apopore in the side wall of the first casing.
Using grit matrix cleaning method during grit matrix cleaning device in the utility model, comprise the following steps：
Step 1：Removable screen cloth is selected according to required grit particle diameter, the removable screen cloth chosen is placed in stirring container
Opening, take river sand to be placed in removable sieve online；
Step 2：The online river sand of removable sieve is rinsed with water, the grit of required particle diameter is entered stirring container；
Step 3：After stopping gaza and water filling, removable screen cloth is removed, and clean the online impurity of removable sieve；
Step 4：Drive device is opened, and makes drive device drive agitating shaft to rotate, in stirring vane stirring stirring container
River sand and water；
Step 5：First casing is positioned in the second casing, after reaching mixing time, closes drive device, it is to be mixed
After liquid level calmness in container, stirring container is toppled over, water and river sand is together poured into the first casing, take out the first casing,
The sewage in the second casing is poured out, the river sand in the first casing is poured into stirring container, water is added into stirring container；
Step 6：Repeat step four is to step 5, until the river sand in the first casing meets experiment demand, takes out the first case
Internal river sand.
River sand is cleaned using the grit matrix cleaning device in the utility model, and the river sand cleaned is used for indoor mould
Grit matrix culture plant in draft experiment, grit matrix cleaning device eliminate big grade chad by removable screen cloth, and
The soluble nutrient for adhering to its surface has been cleaned by the stirring and washing in stirring container, instead of artificial hand washing traditionally,
Than it is traditional it is artificial wash husky more convenient, greatly reduce the labour for washing sand, make the gritty soil earth base after cleaning
Matter meets the scientific research and testing requirements such as nutrient stress, culture matrix grade size homogeneity, greatly improves scientific research efficiency, and simply,
Convenient, whole experimental rig is environment friendly and pollution-free, simple in construction, cheap, simple operation.
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
Embodiment one
The present embodiment provides a kind of grit matrix cleaning device, as shown in Fig. 1~2, including a support 7, a drive device
And a Rose Box, a stirring container 1 is connected with support 7, is provided with an agitating shaft 5 in stirring container 1, on agitating shaft 5
Provided with some stirring vanes 6, the open top of stirring container 1, and the top open part of stirring container 1 are provided with a removable screen cloth 2；
Drive device is arranged on support 4, and the output end of drive device is connected with one end of agitating shaft 5, and drive device is used to drive
Agitating shaft 5 rotates；Rose Box includes the first casing 16 and the second casing 15, and the first casing 16 can be positioned over the second casing 15
It is interior, and offer apopore 17 in the side wall of the first casing 16.
Using grit matrix cleaning method during grit matrix cleaning device in the present embodiment, comprise the following steps：
Step 1：Removable screen cloth 2 is selected according to required grit particle diameter, the removable screen cloth 2 chosen is placed in into stirring holds
The opening of device 1, river sand is taken to be placed on removable screen cloth 2；According to the particle diameter of experiment grit matrix, different sieve aperture chis can be selected
Very little removable screen cloth 2 carries out sieve and taken.
Step 2：The river sand rinsed with water on removable screen cloth 2, the grit of required particle diameter is entered stirring container 1, pass through
Current pour river sand to stirring container 1；
Step 3：After stopping gaza and water filling, removable screen cloth 2 is removed, and the impurity cleaned on removable screen cloth 2；
Step 4：Drive device is opened, and makes drive device drive agitating shaft 5 to rotate, stirring vane 6 stirs stirring container
River sand and water in 1；
Step 5：First casing 16 is positioned in the second casing 15, after reaching mixing time, drive device is closed, treats
After liquid level calmness in stirring container 1, topple over stirring container 1, the water in stirring container 1 and river sand are together poured into first
In casing 6, because the side wall of the first casing 16 is provided with apopore 17, water flows into the second casing 15, river from the first casing 16
Sha Ze is left in the first casing 16, is taken out the first casing 16, the sewage in the second casing 15 is poured out, by the first casing 16
River sand is poured into stirring container 1, and water is added into stirring container 1；
Step 6：After repeat step four can be by the method measure cleaning of chemical assay to step 5, in the present embodiment
River sand nutrient content, until the river sand in the first casing 16 when meeting experiment demand, takes out the river sand in the first casing 16,
Then obtain grit matrix.
River sand is cleaned using the grit matrix cleaning device in the utility model, and the river sand cleaned is used for indoor mould
Grit matrix culture plant in draft experiment, grit matrix cleaning device eliminate big grade chad by removable screen cloth 2, and
The soluble nutrient for adhering to its surface has been cleaned by the stirring and washing in stirring container 1, instead of artificial hand washing traditionally,
Than it is traditional it is artificial wash husky more convenient, greatly reduce the labour for washing sand, make the gritty soil earth base after cleaning
Matter meets the scientific research and testing requirements such as nutrient stress, culture matrix grade size homogeneity, greatly improves scientific research efficiency, and simply,
Convenient, the second casing 15 can be used as sewage containing box, and whole experimental rig is environment friendly and pollution-free, simple in construction, cheap, behaviour
It is convenient to make.
In specific scheme, the bottom surface of the stirring container 1 of grit matrix cleaning device is arcwall face, stirring container and arc
Axial direction vertical both ends of the surface in shape face are plane, and the axial direction in the arcuately face of agitating shaft 5 is set, the edge of stirring vane 6
It is curved.The bottom surface of stirring container 1 is arcwall face, while the edge of stirring vane 6 is curved, can make the bottom of stirring container 1
River sand be sufficiently stirred, improve the cleaning efficiency of river sand；Lower arcuate surface can be avoided stirring and existed when husky square simultaneously
Dead angle so that stirring is more thorough, is easier when toppling over river sand.
The stirring container of grit matrix cleaning device in the present embodiment, bottom are arc, and top is square, such as Fig. 3 institutes
Show, may move the shape of screen cloth 2 also to be square, removable screen cloth 2 is provided with screens flange 21, the screens on two relative sides
Flange 21 is used to being connected to the opening of stirring container 1, and the screen-aperture of removable screen cloth 2 is 2mm, the first casing 16 it is each
A diameter of 1mm apopore 17 is uniformly offered in side wall.
Handle is provided with first casing 16 and the second casing 15, facilitates taking for the first casing 16 and the second casing 15
Put.
Grit matrix cleaning device in the present embodiment, agitating shaft 5 are provided with two stirring vanes 6, two stirring vanes 6
Staggeredly, it is symmetrically distributed and is connected in the both sides of agitating shaft 5, the both ends of each stirring vane 6 by a connecting rod 22 with agitating shaft 5
Connect so that form hollow-core construction between stirring vane 6 and agitating shaft 5, stirring vane 6 in whipping process can be avoided to make water body
Overflow into enormous impact or spill stirring container 1, while can avoid water body that centrifugation occurs with the rotation of stirring vane 6 and make
With spilling stirring container 1.
Grit matrix cleaning device in the present embodiment, drive device includes motor 1, the first transmission device 14 and second passes
Dynamic device 20, the first transmission device 14 include driving pulley, driven pulley and endless belt, and second conveyer includes driving gear
And driven gear, the output shaft of motor 10 are connected with driving pulley, driving pulley is connected by endless belt with driven pulley, driven
Belt wheel is connected by a connecting shaft with driving gear, and driving gear engages with driven gear, driven gear 5 turns of agitating shaft of driving
It is dynamic.Pass through belt transmission and gear drive so that motor 10, which is transmitted to the speed of agitating shaft 5, to diminish, suitable for river sand stirring and
Cleaning.More specifically in scheme, two bearing blocks 23 are provided with corresponding position on support 7, the bottom of bearing block 23 is connected to
On support 7, the side wall of bearing block 23 is connected in the side wall of stirring container 1, and the both ends of agitating shaft 5 are arranged at two bearing blocks 23
Bearing in, and sealing ring is provided between the both ends of agitating shaft 5 and bearing block 23, prevents from leaking between stirring container 1 and agitating shaft 5
Water.
Grit matrix cleaning device in the present embodiment, in addition to a receptacle fixture, receptacle fixture include inserting
Pin pillar 24 and latch 12, latch pillar 24 are arranged on support 7 perpendicular to ground, and the side wall on the top of stirring container 1 is provided with
First pin hole, the position that the top of latch pillar 24 corresponds to the first pin hole are provided with the second pin hole, latch 12 it is pluggable
In first pin hole and the second pin hole, the end of latch 12 is provided with spacing spheroid, and the diameter of spacing spheroid is more than the first latch
Hole and the internal diameter of the second pin hole；Receptacle fixture can control the rotation of stirring container 1, when needing to topple over stirring container 1
When, the latch 12 for being inserted in the first pin hole and the second pin hole is extracted, then stirring container 1 can be made to rotate and incite somebody to action around agitating shaft 5
River sand and water inside stirring container 1 are poured out；After the river sand in stirring container 1 and water are toppled over, make stirring container 1 around stirring
Mix axle 5 and return back to vertical state, latch 12 is inserted into the first pin hole and the second pin hole, then can fix stirring container 1
On support 7.
Grit matrix cleaning device in the present embodiment, in addition to a mixing control device 13, mixing control device 13 and motor
10 electrical connections, can control the unlatching or stopping of stirring by the operating of the controlled motor 10 of mixing control device 13；Or pass through control
The forward or reverse of motor 10 and the rotating speed of motor 10, control stirring vane 6 with agitating shaft 5 clockwise or counterclockwise,
And adjust the size of mixing speed.
Grit matrix cleaning device in the present embodiment, spout hole 3, overflow are offered in the side wall on the top of stirring container 1
Screen pack is provided with hole 3, the aperture of screen pack is identical with the aperture of removable screen cloth 2, and an overflow pipe 4 is connected with spout hole 3.
, it is necessary to the river sand on removable screen cloth 2 is flushed into stirring container 1 with water, water enters to stirring when being cleaned due to grit
Speed in container 1 is more than the speed that river sand enters in stirring container 1, sets spout hole 3, can prevent in stirring container 1
Water level is too high, and the ratio of water and river sand in guarantee stirring container 1 is suitable.River sand is added into the position of agitating shaft 5 in the present embodiment
Place, and spout hole 3 is arranged at 2 times of height of agitating shaft, the height of spout hole 3 makes less than 5~10cm at the top of stirring container
It is higher to obtain the stirring efficiency of stirring container 1, and does not have more spray in whipping process and spills.The internal diameter of spout hole 3 is
25mm, the aperture for the screen pack being provided with spout hole 3 is 2mm.
Grit matrix cleaning device in the present embodiment, the top of motor 10 are provided with the first waterproof cover 11, the first transmission device
The second bucker 18 is covered with, the second transmission device is covered with the 3rd bucker 19, the first waterproof cover 11, the and of the second waterproof cover 18
3rd waterproof cover 19 can protect motor 10, the first transmission device and the second transmission device respectively.
The bottom of the corner of support 7 is provided with a pulley 8, grit matrix cleaning device is arbitrarily moved, each cunning
An antiskid valve 9 is equipped with wheel 8, to after specified location, grit matrix cleaning device can be locked, ensured safe to use.When anti-
When guiding valve 9 is horizontal, pulley 8 can be rolled arbitrarily, and when antiskid valve 9 is operated, pulley 8 is fixed irremovable.
Apply specific case in the utility model to be set forth principle of the present utility model and embodiment, the above
The explanation of embodiment is only intended to help and understands method and its core concept of the present utility model；Meanwhile for the one of this area
As technical staff, according to thought of the present utility model, there will be changes in specific embodiments and applications.It is comprehensive
On, this specification content should not be construed as to limitation of the present utility model.
Claims (10)
- A kind of 1. grit matrix cleaning device, it is characterised in that：Including：One support, a stirring container is connected with the support, an agitating shaft, the stirring are provided with the stirring container Axle is provided with some stirring vanes, the stirring container open top, and the top open part of the stirring container can provided with one Mobile screen cloth；One drive device, the drive device are arranged on the support, and the output end of the drive device and the stirring One end connection of axle, the drive device are used to drive the agitating shaft to rotate；And a Rose Box, the Rose Box include the first casing and the second casing, first casing can be positioned over described In second casing, and apopore is offered in the side wall of first casing.
- 2. grit matrix cleaning device according to claim 1, it is characterised in that：The bottom surface of the stirring container is arc Face, the stirring container both ends of the surface vertical with the arcwall face axial direction are plane, and the agitating shaft is along the arcwall face Axial direction set, the edge of the stirring vane is curved.
- 3. grit matrix cleaning device according to claim 2, it is characterised in that：Each stirring vane passes through connecting rod With the stirring axis connection.
- 4. grit matrix cleaning device according to claim 3, it is characterised in that：The both ends of each stirring vane are logical Cross a connecting rod and the stirring axis connection；The stirring vane is interspersed in the both sides of the agitating shaft.
- 5. grit matrix cleaning device according to claim 1, it is characterised in that：The drive device includes motor, the One transmission device and the second transmission device, first transmission device include driving pulley, driven pulley and endless belt, and described Two conveyers include driving gear and driven gear, and the output shaft of the motor is connected with the driving pulley, the active Belt wheel is connected by the endless belt with the driven pulley, and the driven pulley is connected by a connecting shaft and the driving gear Connect, the driving gear engages with the driven gear, and the driven gear drives the agitating shaft to rotate.
- 6. grit matrix cleaning device according to claim 5, it is characterised in that：Also include a receptacle fixture, institute Stating receptacle fixture includes latch pillar and latch, and the latch pillar is arranged on the support perpendicular to ground, described The side wall on stirring container top is provided with the first pin hole, and the latch pillar top corresponds to the position of first pin hole Provided with the second pin hole, the latch is pluggable in first pin hole and second pin hole, the end of the latch Portion is provided with spacing spheroid, and the diameter of the spacing spheroid is more than the internal diameter of first pin hole and second pin hole；Also Including a mixing control device, the mixing control device electrically connects with the motor.
- 7. grit matrix cleaning device according to claim 1, it is characterised in that：In the side wall on the stirring container top Spout hole is offered, screen pack, the aperture of the screen pack and the aperture phase of the removable screen cloth are provided with the spout hole Together, an overflow pipe is connected with the spout hole.
- 8. grit matrix cleaning device according to claim 5, it is characterised in that：The first waterproof is provided with above the motor Lid, first transmission device are covered with the second bucker, and second transmission device is covered with the 3rd bucker.
- 9. grit matrix cleaning device according to claim 1, it is characterised in that：The bottom of the corner of the support is all provided with A pulley is equipped with, an antiskid valve is equipped with each pulley.
- 10. grit matrix cleaning device according to claim 1, it is characterised in that：First casing and described second Handle is provided with casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031392.3U CN207126782U (en) | 2017-08-17 | 2017-08-17 | A kind of grit matrix cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721031392.3U CN207126782U (en) | 2017-08-17 | 2017-08-17 | A kind of grit matrix cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207126782U true CN207126782U (en) | 2018-03-23 |
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ID=61635187
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721031392.3U Expired - Fee Related CN207126782U (en) | 2017-08-17 | 2017-08-17 | A kind of grit matrix cleaning device |
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| Country | Link |
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| CN (1) | CN207126782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321588A (en) * | 2017-08-17 | 2017-11-07 | 福建农林大学 | A kind of grit matrix cleaning device and method |
-
2017
- 2017-08-17 CN CN201721031392.3U patent/CN207126782U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107321588A (en) * | 2017-08-17 | 2017-11-07 | 福建农林大学 | A kind of grit matrix cleaning device and method |
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Granted publication date: 20180323 Termination date: 20200817 |