CN2311921Y

CN2311921Y - Accurate seeder of rice

Info

Publication number: CN2311921Y
Application number: CN 97236939
Authority: CN
Inventors: 李耀明
Original assignee: JIANGSU SCIENCE AND ENGINEERING UNIVERSITY
Current assignee: JIANGSU SCIENCE AND ENGINEERING UNIVERSITY
Priority date: 1997-08-28
Filing date: 1997-08-28
Publication date: 1999-03-31
Anticipated expiration: 2007-08-28

Abstract

The utility model relates to the field of agricultural machinery, the precision seeding of mainly used rice seedling raising dish. It is characterized in that the seed tray vibration table is composed of a seed suction part 3, an air source 26 and a seed tray vibration table 4, wherein the seed tray vibration table 4 is arranged below the seed suction part 3. The trial-made sample machine is repeatedly tested, the seeding precision is high, the qualification rate of 2-3 grains in each hole can reach more than 93%, the hole rate is less than 2%, the method can be used for precision seeding of rice seedling raising, and the method has the characteristics of no damage to seeds and high uniformity and productivity.

Description

A kind of paddy rice precision seed metering device

The utility model relates to agricultural mechanical field, is a kind of rice cropping machinery, is mainly used in the precise sowing to paddy rice type cellular type plastics seedling dishes (hereinafter to be referred as the seedling dish).

At present, China is used for the sower of seedling, adopts outer groove-wheel mostly, and sieve type hole bar or nest eye wheel and mechanical type dispenser are as the motor-driven sower of ZBDY-300 type.This sower is owing to adopt external feed, and it is poor often to produce seeding uniformity, and the hole rate height can not satisfy the required precision of 2～3 seeds in every cave, and this structure easily forms friction and extruding, causes and hinders kind or dead the kind.

The purpose of this utility model is to use vibration---the principle of aspiration, has designed the seed pan shake table, has inhaled kind of parts and source of the gas new construction thereof, realizes the precise sowing to the seedling dish, thereby a kind of low paddy rice precision seed metering device of hole rate of sowing is provided.

The purpose of this utility model is achieved in that

Seed imports the seed pan that places on the shake table by seed-box, just produces upwards sling movement after the seed vibration, makes between seed to be separated from each other, and is " boiling " state.The suction kind plate of inhaling kind of parts is moved on to the back of aliging with seed pan, seed pan shake table top to be controlled by limiting plate and limits the position.Have aperture on suction kind of the plate, each aperture evenly holds because of the seed of air chamber negative pressure generation suction with upthrow in the seed pan.To inhale then and plant the appropriate location that plate moves on to the seedling dish top on the Sprout cultivation seeder conveyer belt, this position has limiting plate control again, blocking-up source of the gas air-flow, and discharge negative pressure (communicating) with atmosphere, seed leaves suction kind of a plate by deadweight and falls into the seedling dish.Have and the corresponding suction hole in seedling dish hole owing to inhale on kind of the plate, thereby guaranteed 2～3 seeds in the every cave of seedling dish, reach the purpose of precise sowing.

Structure of the present utility model is provided by the following drawings and embodiment.

Fig. 1 is the utility model structural representation

Fig. 2 is a seed pan shake table schematic diagram

Fig. 3 is for inhaling kind of a block diagram

Fig. 4 is the change-over switch cutaway view

The name of each label is called among the figure: 1. electromotor 2. soil-discharging devices 3. suctions kind of parts 4. seed pan shake tables 5. seedling dishes 6. frames 7. conveyer belts 8. seed-boxes 9. guide type shoes 10. push rods 11. frames 12. connecting rods 13. adjustable eccentrics overlap 14. variable-speed motors, 15. springs, 16. vibration seed pans, 17. deflectors 18. and inhale kind of plates 19. air chambers 20. change-over switches 21. adapters 22. suction holes 23. limiting plates 24. reversing plates 25. valve hole plates 26. sources of the gas

Now describe the utility model concrete structure in conjunction with the accompanying drawings in detail:

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, parts of the present utility model are by inhaling kind of parts 3 and source of the gas 26, seed pan shake table 4. and other parts supporting with it: electromotor 1, soil-discharging device 2, seedling dish 5, frame 6, conveyer belt 7 etc. are formed.

It is characterized in that: it by inhale kind of parts 3 and source of the gas 26, seed pan shake table 4 is formed, seed pan shake table 4 is located at the below of inhaling kind parts 3.

Seed pan shake table 4:

It is made up of seed-box 8, guide type shoe 9, push rod 10, frame 11, connecting rod 12, slidding-block type adjustable eccentric cover 13, (speed governing) electromotor 14, spring 15, vibration kind of dish 16, deflector 17.It is characterized in that: the left and right sides seed-box 8 that has the seed export passage is fixed on the frame 11, the seed export passage is communicated with vibration seed pan 16 by deflector 17, spring 15 is equipped with in the bottom surface of vibration seed pan 16, spring 15 is connected with frame 11 usefulness bolts, vibration seed pan 16 middle parts are connected with push rod 10 with straight pin, push rod 10 is contained in guide type shoe 9 openings, guide type shoe 9 is connected with frame 11 usefulness bolts, and be connected with connecting rod 12 usefulness straight pins, connecting rod 12 is connected with slidding-block type adjustable eccentric cover 13 by slip or rolling bearing, slidding-block type adjustable eccentric cover 13 is connected with (speed governing) electromotor 14 with hold-down screw by keyway, (speed governing) electromotor 14 is fixed on the frame 11, and frame 11 is a tower structure.

Its course of work is: the power of variable-speed motor 14 is by adjustable eccentric cover 13, connecting rod 12, push rod 10, make the vibration seed pan 16 that has spring 15 produce vibration, spring 15 both can not have constraint vibration, also can become constraint vibration is arranged by fairlead, install 1～2 layer of wire netting or other materials additional on the vibration seed pan 16, with laterally moving of restriction seed.

Inhale kind of parts 3 and source of the gas 26:

It is formed by inhaling kind of a plate 18, air chamber 19, change-over switch 20, adapter 21, suction hole 22, limiting plate 23, reversing plate 24, valve hole plate 25 and source of the gas 26.It is characterized in that: the suction kind plate 18 that two ends are provided with limiting plate 23 is rectangle, size is big or small identical with the seedling dish, on suction kind of plate 18, be drilled with some groups of suction holes 22 (the group number is identical with the upper conical hole count of seedling dish), 1～2 of every group of aperture, be staggered arrange (consistent) with the arrangement in hole on the seedling dish, broadcast rice paddy seed, the diameter in hole is φ 1.5～φ 2.5mm.Broadcast vegetable seeds, then every group of hole count is 1, and the diameter in hole is φ 0.42～φ 1.2mm.Inhale for improving kind of rate and seeding rate, aperture is fallen a little angle, be the cylinder bellmouth at the suction kind face of columniform feed outlet; Inhale kind of a plate 18 and can adopt plastic plate or metal material.Inhale between kind of plate 18 and the air chamber 19 and sealing strip is housed and both is connected by bolt, air chamber 19 positive middle and upper parts are communicated with lower linking tube 21, lower linking tube 21 upper ends are provided with change-over switch 20, be connected with upper connecting tube 21, upper connecting tube 21 is communicated with source of the gas 26, and source of the gas 26 is a dust catcher, power 800～1500W, stepless speed regulation, maximum wind pressure 20000Pa, maximum quantity of wind 2.5m ³/ min.

Change-over switch 20: form by reversing plate 24 and two valve hole plates 25, the centre of reversing plate 24 is provided with 1 hole, the size in hole is about takes over 3/5 of 21 diameters, it places up and down between two valve hole plates 25, two valve hole plates 25 link to each other with last lower linking tube 21, make three parts be welded into an integral body, between two valve hole plates 25 gap is arranged simultaneously, so that reversing plate 24 energy move left and right, two valve hole plates 25 respectively are provided with three holes, the hole of the size of interstitial hole and reversing plate 24 big or small identical, the size in other two holes is about takes over 1/4 of 21 diameters, and reversing plate 24 is move left and right in the two clamping plates of valve hole plate 25.Take over 21 tops and be communicated with, take over 21 bottoms and be communicated with air chamber 19 with source of the gas (dust catcher) 26.Its course of work:

After starting source of the gas 26, when reversing plate 24 during as Fig. 4 position (reversing plate 24 is in the centre position), inhale kind of parts 3 and be in kind of the state of inhaling, when reversing plate 24 is moved to the left until blocking-up source of the gas 26 and air chamber 19, and the two side holes of two valve hole plates 25 is communicated, on the one hand air chamber 19 is communicated by taking over 21 bottoms with atmosphere, the seeds fall that suction hole 21 is sucted, source of the gas 26 is communicated with atmosphere by taking over 21 bottoms, make source of the gas energy normal suction, unlikely overload.

Advantage of the present utility model: owing to adopt vibration-aspiration new principle, so the seeding accuracy height, through examination The model machine repetition test of system, the qualification rate that every cave is 2～3 can reach more than 93%, and hole rate＜2% also can Be used for simple grain and many sowings. Undoubtedly, it not only can be used for the precise sowing of raising rice seedlings, slightly transforms and also can The precise sowing that is used for greengrocery and other class seeds. Has injuring-free seed, the characteristics of good uniformity. Operation Nimble, productivity ratio is higher, can satisfy craft, mechanization or automation mechanized operation.

Claims

1. paddy rice precision seed metering device, it has electromotor (1), soil-discharging device (2), seedling dish (5), frame (6), conveyer belt (7), seed-box (8), reversing plate (24), valve hole plate (25), source of the gas (26) to form, it is characterized in that: it is formed by inhaling kind of parts (3) and source of the gas (26) and seed pan shake table (4), and seed pan shake table (4) is located at inhales kind of parts (a 3) below.

2. a kind of paddy rice precision seed metering device according to claim 1, it is characterized in that: the structure of seed pan shake table (4) is: the left and right sides seed-box (8) that has the seed export passage is fixed on the frame (11), the seed export passage is communicated with vibration seed pan (16) by deflector (17), spring (15) is equipped with in vibration seed pan (16) bottom surface, spring (15) is connected with frame (11), vibration seed pan (16) middle part is connected with push rod (10), push rod (10) is contained in guide type shoe (9) opening, guide type shoe (9) is connected with frame (11), and be connected with connecting rod (12), connecting rod (12) is connected with eccentric bushing (13) by bearing, eccentric bushing (13) is connected with (speed governing) electromotor (14), (speed governing) electromotor (14) is fixed on the frame (11), and frame (11) is a tower structure.

3. the accurate smart device of planting of a kind of paddy rice according to claim 1, it is characterized in that: inhaling kind of the structure of parts (3) is: the suction kind plate (18) that two ends are provided with limiting plate (23) is a rectangle, big or small identical with the seedling dish, on suction kind of plate (18), be drilled with some groups of suction holes (22), inhale and between kind of plate (18) and the air chamber (19) sealing strip to be housed both are connected, the positive middle and upper part communication nipple (21) of air chamber (19) is taken over (21) middle reversing plate (24) that is provided with, and is communicated with source of the gas (26).