CN104206257A - Horizontal soilless culture system driven to lift up and down by two-path stepping motor - Google Patents
Horizontal soilless culture system driven to lift up and down by two-path stepping motor Download PDFInfo
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- CN104206257A CN104206257A CN201410448749.2A CN201410448749A CN104206257A CN 104206257 A CN104206257 A CN 104206257A CN 201410448749 A CN201410448749 A CN 201410448749A CN 104206257 A CN104206257 A CN 104206257A
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- cabinet
- soilless culture
- stepper motor
- culture system
- horizontal
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- 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
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
The invention provides a horizontal soilless culture system driven to lift up and down by a two-path stepping motor. The horizontal soilless culture system comprises a horizontal cabinet body, wherein a conjoined frame is arranged in the cabinet body and is in an uncovered multi-layer frame structure, a plurality of groups of soilless culture units are overlapped and arranged in the conjoined frame, and each group of soilless culture units comprises a soilless culture box. The horizontal soilless culture system is characterized in that stepping motor driving devices and guide sliding rail devices are respectively arranged between the two corresponding sides of the conjoined frame and the adjacent inner walls of the cabinet body.
Description
Technical field
The present invention relates to cultivation technique without soil field, particularly relate to the horizontal soilless culture system of a kind of two-way driving stepper motor lifting.
Background technology
Stepper motor is a kind of induction machine, its operation principle utilizes electronic circuit, direct current is become the heterogeneous SECO electric current of time sharing power supply, and be that stepper motor is powered with this electric current, driver is exactly the heterogeneous time schedule controller for stepper motor time sharing power supply, and Driving Stepping Motor rotates a fixing angle (i.e. stepping angle) by the direction of setting.Pilot angle displacement can be carried out by control impuls number, thus reach the object of accurately location; Speed and the acceleration of electric machine rotation can be controlled simultaneously by control impuls frequency, thus reach the object of speed governing.
Stepper motor is divided into rotary type stepper motor and orthoscopic stepper motor by output forms of motion, and the advantage of stepper motor does not have cumulative error, and structure is simple, easy maintenance, low cost of manufacture, and stepping motor drives the ability of load inertia large.
Soilless culture can not land occupation resource, directly in made container, carrys out cultivated plant with nutrient solution.Compared with traditional culture technique; cultivation technique without soil can the simple and effective control temperature of crop in growth and development process, moisture, illumination, nutrient and air key element parameter; effective control and acceleration plant growth; improve crop quality; be suitable for carrying out batch production, scale, customization agricultural development; can manual operation be lowered, reduce the production cost of crops.
Cultivation technique without soil can free the dependence of production estimation to soil further, unrenewable cultivated land resource is made to obtain expansion and supplement, particularly for the country of such populous, the per capita cultivated land's scarcity of resources of China, there is immeasurable prospect and value especially.
Cultivation technique without soil is owing to adopting the production control become more meticulous, and it is high to the producing level of water resource, compared with the quantity of the consumption water resource of traditional farming, can save a large amount of agricultural waters, improve the tensity of current water resource.
From another angle analysis, modern science and technology and business development, the immoderate abuse of chemical fertilizer and various additive, on various vegetables commodity, show serious consequence, how to ensure the safety of the diet of people, need the various Regulation Policy and the measure that rely on country on the one hand, on the other hand, people also need a kind of not busy complementary space at home that can utilize to carry out the technology and equipment of science and technology plantation in a hurry, this household formula planting technology, both can make people after tense working, utilize plantation to mould a person's temperament, loosen body and mind tired out, can recreate by oneself again, from kind from receiving, know from experience the happiness of the rare results known from experience in the life staying idle at home of a city, simultaneously can also for providing the vegetables of feeling at ease of some at home.
Therefore, a kind of miniaturization, portable, that people's daily life and amusement can be met cultivation apparatus without soil, for people life staying idle at home there is deep realistic meaning and economy and social value.
Summary of the invention
The object of the present invention is to provide a kind of soilless culture system adopting two-way driving stepper motor to be elevated.
Technical scheme of the present invention is as follows:
A kind of horizontal soilless culture system of two-way driving stepper motor lifting, comprise horizontal counter cabinet, a conjuncted framework is provided with in described cabinet, described conjuncted framework is the frame structure of the multilayer of a uncovered, described conjuncted framework inner stacks is provided with some groups of soilless culture unit, include a soilless culture box in described each group of soilless culture unit, it is characterized in that: between the corresponding both sides of described conjuncted framework and adjacent cabinet inwall, be respectively arranged with driving device for step-by-step and directive slide track device.
Optionally, described driving device for step-by-step comprises stepper motor, stepper motor driver and controller, described stepper motor is also provided with dampproof cover, the output of described stepper motor is connected with screw rod, screw rod overlaps loading nut, described stepper motor and nut are connected respectively with outside cabinet inwall or conjuncted framework, and are distributed in opposed end.
Optionally, described stepper motor is arranged at the bottom of cabinet inwall, and described nut is arranged at the outer lower portion of conjuncted framework by connecting plate.
Optionally, described driving device for step-by-step also comprises the stopping means being arranged at its stroke two ends, and described stopping means comprises touch-type or photo-electric limit switch.
Optionally, described soilless culture unit is connected by anti-drop type track structure with between framework support body, and can carry out unidirectional or way moving along this track.
Optionally, described each soilless culture unit also comprises a bracket, and described bracket is the frame structure of upper opening, and described soilless culture box is arranged in bracket.
Optionally, the upper end of described cabinet is provided with cabinet lid, and cabinet lid to be connected with cabinet upper end by gas-pressure mandril and to open and close, and the junction of described cabinet lid and cabinet is provided with sealing joint strip or magnetic stripe.
Optionally, linked by a control device between described cabinet lid and conjuncted framework, when cabinet lid is opened, conjuncted framework rises thereupon, and when conjuncted framework is regained in cabinet, cabinet lid is also closed thereupon, described control device is electrical control gear, or is armstrong's patent control device.
Optionally, described directive slide track device comprises orbit determination and dynamic rail, described orbit determination and dynamic rail are corresponding to be respectively arranged on the inwall of cabinet and the adjoining outer walls of conjuncted framework, the corresponding concaveconvex structure being provided with coupling mutually between the orbit determination of described railroad and dynamic rail, described concaveconvex structure comprises rectangle concaveconvex structure and dovetail shaped concaveconvex structure.
Optionally, bactericidal unit and ventilation unit is provided with in described cabinet, described bactericidal unit is ultraviolet sterilizer, described ventilation unit comprises the ventilating opening arranging cabinet one upper lateral part, ventilating opening place is provided with the dedusting wind sleeve of a blower fan and through cabinet both sides, the one or both sides of cabinet bottom are provided with air outlet, and the inlet end of described blower fan is provided with fan cover to be opened/closed.
Technique effect of the present invention is:
The horizontal soilless culture system of two-way driving stepper motor lifting of the present invention passes through the two-way driving device for step-by-step and the directive slide track device that in horizontal cabinet, arrange conjuncted framework and drive conjuncted framework.The present invention utilizes stepper motor to drive conjuncted framework to be elevated in conjunction with bolt and nut, it is little that stepper motor has rotating speed, moment is large, steadily adjustable feature, be highly suitable for soilless culture system of the present invention, compared with conventional motors, directly can pass through drive current adjustment rotating speed, without the need to configuring decelerator, both the cost of equipment had been reduced, spatial volume in hold facility cabinet can be reduced again, and noise is little, be suitable for domestic environment application, because bolt and nut structure stroke is long, sectional dimension is little, its poor structure rigidity, the property of the present invention is directed in conjunction with concavo-convex directive slide track device of setting, while realizing oriented sliding, this concaveconvex structure of mutually setting is utilized to have good structural rigidity, improve and make up the deficiency of bolt and nut structure.
Directive slide track device comprises orbit determination and dynamic rail, be arranged at cabinet inwall respectively with on the outer wall of the conjuncted framework be adjacent, orbit determination and dynamic rail adopt the lenticular of coupling mutually to set structure, in conjunction with the driving of two-way stepper motor, make conjuncted framework lifting of the present invention more steady, and set structure due to orbit determination and the concavo-convex of dynamic rail, larger structural strength and rigidity can be provided, run more reliable.
Such rail structure not only compact conformation, takies space in cabinet little, and can also play the effect of support and firm conjuncted framework.
Because cabinet environment is moist, and have certain corrosivity, the present invention is provided with dampproof cover on stepper motor.
Because slide rail can be located at the one or both sides of conjuncted framework, comparatively speaking, bracket in conjuncted framework or box body just at least have the degree of freedom in 2 directions, during use, bracket or box body can adopt unidirectional turnover, also can adopt bidirectional crossed movement, compared with existing cabinet type soilless culture system, the plant in soilless culture box has better illumination and ventilation.
Soilless culture system of the present invention adopts conjuncted frame structure, this structure is convenient to built-in multiple bracket and soilless culture box body, each bracket and the stacked setting of box body are wherein, and be connected with framework support body by anti-drop type track structure, each bracket and box body slide along this track and pass in and out framework, such structure, after each bracket and box body skid off framework, the cultivated area of whole soilless culture system can be expanded, after slipping into framework, each bracket and box body stack successively, the spatial area taken is minimum, therefore, soilless culture system of the present invention can utilize limited spatial area to greatest extent.
In soilless culture system of the present invention, cabinet is provided with cabinet lid, and cabinet lid is connected by atmospheric pressure pole with cabinet and turns over and opens.Meanwhile, in order to be incubated and seal, the junction of cabinet lid and cabinet is provided with sealing joint strip or magnetic stripe.
In soilless culture system of the present invention, linked between cabinet lid and conjuncted framework by a control device, when opening cabinet lid, conjuncted framework is opened with cabinet lid and starts rising, and when conjuncted framework is regained in cabinet, cabinet lid is closed thereupon.
This control device both for conventional electrical control gear, also can adopt conventional Manual mechanical control device.
In soilless culture system of the present invention, in cabinet, be provided with bactericidal unit.
In soilless culture system of the present invention, also comprise the ventilation unit be arranged in cabinet, by arranging ventilating opening at cabinet one upper lateral part, at ventilating opening place, one blower fan is set, the air opening end of blower fan arranges the dedusting wind sleeve of through cabinet both sides, and setting out air port in the one or both sides of cabinet bottom, the air being entered cabinet by blower fan enters cabinet after dedusting wind sleeve filters, and is derived by air outlet.In order to when ensureing fan parking, external dust can not enter through blower fan air flue, the present invention is also provided with fan cover to be opened/closed at the inlet end of blower fan, fan cover by hinge and air inlet end hinged.
For the ease of mobile carrying, the bottom of cabinet is provided with roller, and the side plate top of cabinet is provided with suspension ring etc.
Accompanying drawing explanation
Figure 1 shows that structural representation of the present invention.
Figure 2 shows that the structural representation of anti-drop type track.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the horizontal soilless culture system of two-way driving stepper motor lifting of the present invention comprises horizontal cabinet 4, cabinet 4 is provided with cabinet lid, attached not shown, cabinet lid is connected with cabinet 4 upper end with atmospheric pressure pole, cabinet lid is undertaken turning over opening by atmospheric pressure pole, and the closed junction of cabinet lid and cabinet 4 is provided with sealing joint strip or magnetic stripe carries out sealing and being incubated.
Conjuncted framework 1 is provided with in cabinet 4, the both sides correspondence of conjuncted framework 1 is provided with directive slide track device, railroad comprises orbit determination 6 and dynamic rail 5, in diagram, orbit determination 6 is arranged at the inwall of cabinet 4, and dynamic rail 5 correspondence is arranged at the outer wall of conjuncted framework 1, in actual use, dynamic rail 5 also can be arranged on the inwall of cabinet, and orbit determination 6 is arranged at the outer wall of conjuncted framework 1.Be the rectangle concaveconvex structure of coupling mutually between orbit determination 6 and dynamic rail 5, and mutually nested use, in actual use, concaveconvex structure also can adopt oat tail groove structure or other nested structure, as arc or other curved surface concaveconvex structure.
The linkage of conventional electric automatic control is provided with between cabinet lid and conjuncted framework 1, or the Manual mechanical link gear of routine, after cabinet lid is opened, stepper motor 3 is from dynamic response and drive conjuncted framework 1 to rise, when conjuncted framework 1 falls back in cabinet, cabinet lid is from dynamic response and close.
Driving device for step-by-step is respectively arranged with between cabinet 4 and conjuncted framework 1 both sides, stepper motor 3 is fixed on the base plate of cabinet 4, the output shaft end of stepper motor 3 is connected with screw rod 18, and drive screw 18 rotates, conjuncted framework 1 bottom is connected with a nut 19 by a plate 17, nut 19 and screw rod 18 match and are sleeved on screw rod 18, and nut 19 realizes lifting with the rotation forward or backwards of stepper motor 3.
Stepper motor 3 also adaptation has stepper motor driver (not shown) and controller, and stepper motor driver and controller are arranged at outside cabinet, in order to input the parameter of electric machine.
Because cabinet environment is moist, and have certain corrosivity, the present invention is provided with dampproof cover on stepper motor.
Conjuncted framework 1 is multistory frame structure, in every layer of framework, correspondence is provided with a soilless culture unit, soilless culture unit comprises a bracket 16, bracket 16 upper end open, and a built-in separable soilless culture box 2, soilless culture box 2 is built-in with latticed plant retainer, and institute raise crop is arranged in the grid of retainer respectively, with the growth attitude keeping plant upwards upright.
The large I of grid is with the root of crop, the size of stem and fixed.
Wherein a bracket 16 can be set to seedling growing box.
In soilless culture system of the present invention, also have as comprised the attached pipeline in order to provide nutrient solution such as feed liquid hose, fluid flexible pipe, hydraulic pump, magnetic valve, liquid storage box, and in order to the electronic of push-and-pull soilless culture box body or hydraulic thrust drawing device etc., all not shown in accompanying drawing of the present invention, but this does not affect these functional devices in application of the present invention and enforcement.
Bracket 16 both sides are connected by the inwall of anti-drop type track with conjuncted framework 1, and the structure of anti-drop type track as shown in Figure 2.Comprise the inverted U-lag track 8 be arranged on conjuncted framework 1 inwall, below correspondence is provided with a roller 7, and roller top is embedded in track 8, and bottom is fixed in a U-lag 9 by axle 10, and U-lag 9 is connected with bracket 16.
Certainly, other conventional existing track structure can also be adopted.
Because slide rail in the present invention and driving stepper motor organization establishes are in the respective sides of conjuncted framework 1, soilless culture unit then in conjuncted framework all can have the degree of freedom of both direction, therefore, in the present invention, each soilless culture unit both can adopt unidirectional turnover mobile, and two-way turnover also can be adopted to move.
In order to ensure, in cabinet 4, there is suitable crop growth environment, for plant, illumination, temperature, moisture content and air are all the extremely important key elements of its growth, the present invention is directed to these key elements and are provided with illumination compensation system, temperature control equipment, humidity conditioner, ventilation unit respectively.
Illumination compensation system comprises compensatory light, compensatory light preferable alloy halide lamp or sodium vapor lamp or LED light source, in the light wave that these light sources produce, its light wave produced lays respectively at 420nm ~ 500nm (indigo plant) and 620nm ~ 750nm (red), test proves, the photosynthesis promotion effect that the illumination that plant is 420nm ~ 500nm (indigo plant) and 620nm ~ 750nm (red) to optical wavelength produces is the strongest.Compensatory light both can be arranged on the inwall of cabinet 4, also can be arranged on the inwall of conjuncted framework 1.
Temperature control equipment comprises temperature sense probe, heater and control device, heater adopts electrical heating or plate type heat exchanger, or pipe heat exchanger, or band-tube type heat exchanger, by being located at temperature in the temperature-sensing probe Real-Time Monitoring cabinet 4 in cabinet 4, and automatically regulated by control device.
Heat loss in cabinet 4, reduce energy consumption, the wallboard of cabinet 4 is provided with heat-insulation layer.
Humidity conditioner comprises humidity inductive probe, sprayer and control device, sprayer can adopt the mode of atomized water spray to regulate humidity in cabinet 4, also can adopt directly by the mode that nutrient liquid atomizing sprays, have the effect of humidification and Promoting plant growth concurrently.Humidity in humidity inductive probe energy Real-Time Monitoring cabinet 4, and automatically control sprayer startup by control device, keep cabinet 4 humidity constant.
In soilless culture system of the present invention, also comprise the ventilation unit be arranged in cabinet, by arranging ventilating opening at cabinet one upper lateral part, at ventilating opening place, one blower fan is set, the air opening end of blower fan arranges the dedusting wind sleeve of through cabinet both sides, and setting out air port in the one or both sides of cabinet 4 bottom, the air being entered cabinet 4 by blower fan enters cabinet 4 after dedusting wind sleeve filters, and is derived by air outlet.In order to when ensureing fan parking, external dust can not enter through blower fan air flue, the present invention is also provided with fan cover to be opened/closed at the inlet end of blower fan, fan cover by hinge and air inlet end hinged.
In soilless culture system of the present invention, in cabinet, be provided with bactericidal unit.
For the ease of mobile carrying, the bottom of cabinet 4 can be provided with roller, the side plate top of cabinet 4 is provided with suspension ring etc.
The foregoing is only preferred embodiment of the present invention; for a person skilled in the art; according to description and interpretation of the present invention; its structure of change and form can also be derived; should be understood that; any distortion and change not departing from the present invention's spirit and essence, all will be included among protection scope of the present invention.
Claims (10)
1. the horizontal soilless culture system of a two-way driving stepper motor lifting, comprise horizontal counter cabinet, a conjuncted framework is provided with in described cabinet, described conjuncted framework is the frame structure of the multilayer of a uncovered, described conjuncted framework inner stacks is provided with some groups of soilless culture unit, include a soilless culture box in described each group of soilless culture unit, it is characterized in that: between the corresponding both sides of described conjuncted framework and adjacent cabinet inwall, be respectively arranged with driving device for step-by-step and directive slide track device.
2. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 1, it is characterized in that: described driving device for step-by-step comprises stepper motor, stepper motor driver and controller, described stepper motor is also provided with dampproof cover, the output of described stepper motor is connected with screw rod, screw rod overlaps loading nut, described stepper motor and nut are connected respectively with outside cabinet inwall or conjuncted framework, and are distributed in opposed end.
3. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 2, it is characterized in that: described stepper motor is arranged at the bottom of cabinet inwall, described nut is arranged at the outer lower portion of conjuncted framework by connecting plate.
4. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 3, it is characterized in that: described driving device for step-by-step also comprises the stopping means being arranged at its stroke two ends, described stopping means comprises touch-type or photo-electric limit switch.
5. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 1, is characterized in that: described soilless culture unit is connected by anti-drop type track structure with between framework support body, and can carry out unidirectional or way moving along this track.
6. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 1, is characterized in that: described each soilless culture unit also comprises a bracket, and described bracket is the frame structure of upper opening, and described soilless culture box is arranged in bracket.
7. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 1, it is characterized in that: the upper end of described cabinet is provided with cabinet lid, cabinet lid to be connected with cabinet upper end by gas-pressure mandril and to open and close, and the junction of described cabinet lid and cabinet is provided with sealing joint strip or magnetic stripe.
8. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 7, it is characterized in that: linked by a control device between described cabinet lid and conjuncted framework, when cabinet lid is opened, conjuncted framework rises thereupon, when conjuncted framework is regained in cabinet, cabinet lid is also closed thereupon, and described control device is electrical control gear, or is armstrong's patent control device.
9. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 1, it is characterized in that: described directive slide track device comprises orbit determination and dynamic rail, described orbit determination and dynamic rail are corresponding to be respectively arranged on the inwall of cabinet and the adjoining outer walls of conjuncted framework, the corresponding concaveconvex structure being provided with coupling mutually between the orbit determination of described railroad and dynamic rail, described concaveconvex structure comprises rectangle concaveconvex structure and dovetail shaped concaveconvex structure.
10. the horizontal soilless culture system of two-way driving stepper motor lifting as claimed in claim 1, it is characterized in that: in described cabinet, be provided with bactericidal unit and ventilation unit, described bactericidal unit is ultraviolet sterilizer, described ventilation unit comprises the ventilating opening arranging cabinet one upper lateral part, ventilating opening place is provided with the dedusting wind sleeve of a blower fan and through cabinet both sides, the one or both sides of cabinet bottom are provided with air outlet, and the inlet end of described blower fan is provided with fan cover to be opened/closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448749.2A CN104206257A (en) | 2014-09-01 | 2014-09-01 | Horizontal soilless culture system driven to lift up and down by two-path stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410448749.2A CN104206257A (en) | 2014-09-01 | 2014-09-01 | Horizontal soilless culture system driven to lift up and down by two-path stepping motor |
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| Publication Number | Publication Date |
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| CN104206257A true CN104206257A (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410448749.2A Pending CN104206257A (en) | 2014-09-01 | 2014-09-01 | Horizontal soilless culture system driven to lift up and down by two-path stepping motor |
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| JPH07177829A (en) * | 1993-12-22 | 1995-07-18 | Yoshitami Yanohara | Hydroponic culture device |
| CN101336607A (en) * | 2008-08-08 | 2009-01-07 | 慕山君 | Movable growth disk installation device for aerosol stereo planting production |
| CN103493720A (en) * | 2013-05-24 | 2014-01-08 | 魏延恕 | Horizontal type upper-open soilless culturing device |
| CN103535264A (en) * | 2013-07-25 | 2014-01-29 | 魏延恕 | Pulled-out type soilless cultivating device |
| CN103535266A (en) * | 2013-07-25 | 2014-01-29 | 魏延恕 | Vertical cabinet type two-way drawing type soilless culturing device |
| CN103651085A (en) * | 2013-11-26 | 2014-03-26 | 魏延恕 | Electric-push-and-pull automatic-retraction type soilless cultivation device |
| CN103999760A (en) * | 2014-06-04 | 2014-08-27 | 魏延恕 | Pneumatic folding undercarriage type soil-less culture system |
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2014
- 2014-09-01 CN CN201410448749.2A patent/CN104206257A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07177829A (en) * | 1993-12-22 | 1995-07-18 | Yoshitami Yanohara | Hydroponic culture device |
| CN101336607A (en) * | 2008-08-08 | 2009-01-07 | 慕山君 | Movable growth disk installation device for aerosol stereo planting production |
| CN103493720A (en) * | 2013-05-24 | 2014-01-08 | 魏延恕 | Horizontal type upper-open soilless culturing device |
| CN103535264A (en) * | 2013-07-25 | 2014-01-29 | 魏延恕 | Pulled-out type soilless cultivating device |
| CN103535266A (en) * | 2013-07-25 | 2014-01-29 | 魏延恕 | Vertical cabinet type two-way drawing type soilless culturing device |
| CN103651085A (en) * | 2013-11-26 | 2014-03-26 | 魏延恕 | Electric-push-and-pull automatic-retraction type soilless cultivation device |
| CN103999760A (en) * | 2014-06-04 | 2014-08-27 | 魏延恕 | Pneumatic folding undercarriage type soil-less culture system |
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Application publication date: 20141217 |