CN201430768Y

CN201430768Y - Pneumatic seed feeding device

Info

Publication number: CN201430768Y
Application number: CN200920076779XU
Authority: CN
Inventors: 陈恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-22
Filing date: 2009-06-22
Publication date: 2010-03-31
Anticipated expiration: 2019-06-22

Abstract

The utility model relates to an agricultural seed sowing machine, in particular to a pneumatic seed feeding device used on a seed sowing machine. The pneumatic seed feeding device comprises a negativepressure cavity (5) and a seed suction plate (4), wherein the seed suction plate (4) is circular, and seed suction holes (1) are uniformly distributed on the seed suction plate (4) which is arrangedon a central shaft (6) of the negative pressure cavity. The utility model is characterized in that the seed suction plate (4) adopts a concavely curved surface, so that the periphery thereof can be inclose fit with the contact surface of the negative pressure cavity under pressure. The seed suction plate is elastic due to the design of the curved surface, and is further fixed on the shaft throughscrews, so that under the action of the elasticity and the screws, the periphery of the seed suction plate and the air cavity are completely sealed, thereby enhancing the combination tightness of theseed suction plate and the air cavity, improving the leakproofness between the seed suction plate and the air cavity, avoiding the phenomenon of gas leakage, and increasing the seed suction rate; andthe design on the diameter of each seed suction hole on the seed suction plate can not only improve the seed suction rate, but also achieve the effect of accurate seed feeding. The device can be mounted on the prior fertilizing and film paving precision planter.

Description

The air-sucking type seed taking device

Technical field

The utility model relates to a kind of agricultural seeding machine, particularly a kind of air-sucking type seed taking device that uses on sower.

Background technology

In the agricultural seeder process, in order accurately to get kind, use a kind of air-sucking type seeding apparatus more widely, this device mainly comprises a negative pressure cavity, connect an air intake duct on the negative pressure cavity, on the central shaft of negative pressure cavity, seed absorbing plate is set, seed suction hole along the circumferential direction evenly is set on the seed absorbing plate, the relative in the course of the work and negative pressure cavity rotation of seed absorbing plate, seed suction hole is inhaled seed in rotary course, seed falls; Usually negative pressure cavity is the flattened cylindrical shape, and its inside can be provided with various forms of airflow path as required, and the non-negative pressuren zone of a part is set in the bottom usually, makes by the seed that is drawn onto at negative pressuren zone at the terminal seed that falls.This apparatus features, often need to guarantee that good the cooperating of seed absorbing plate and negative pressure cavity realizes inhaling seed, but in the prior art, be to lean on the suction adsorption of wind on air cavity during seed absorbing plate work, it is plane that seed absorbing plate is generally, and the processing relative accuracy of agricultural machinery is on the low side, the use environment is more abominable, like this, existing in practice plane seed absorbing plate is difficult to meet the requirements of flatness, causes the seed absorbing plate torsional deformation easily, its result can cause the seed absorbing plate job insecurity, cause the seal of seed absorbing plate and air cavity poor,, cause the suction seed weak effect of seed absorbing plate a large amount of gas leak of periphery that seed absorbing plate combines with air cavity, suction phenomenon appears revealing, and then in the sowing process, the hole appears, have a strong impact on planting rates.In addition, the diameter of the seed suction hole on the seed absorbing plate kind also there is very significant effects to inhaling, when satisfying agricultural and requiring, how selects described parameter need do a large amount of scientific experiments.

Summary of the invention

The purpose of this utility model is according to above-mentioned problems of the prior art, the one,, improve tight ness rating that seed absorbing plate combines with air cavity to strengthen the seal of seed absorbing plate and air cavity by the shape of improving seed absorbing plate, avoid the phenomenon that leaks, raising suction seed rate; The 2nd,, by aperture design, inhale the seed rate except that improving to the seed suction hole on the seed absorbing plate, can also realize improving and accurately get the effect of planting.

The utility model purpose realizes being finished by following technical scheme:

The utility model air-sucking type seed taking device comprises negative pressure cavity 5 and seed absorbing plate 4, seed absorbing plate 4 is round, is evenly distributed with seed suction hole 1 on the seed absorbing plate 4, is arranged on the central shaft 6 of negative pressure cavity 5, seed absorbing plate 4 is concave curved surface, and its its periphery under pressure can be closely cooperated with the contact-making surface of negative pressure cavity; The described concave curved surface shape seed absorbing plate 4 that is is umbrella shape or plate shape; The top of the described seed absorbing plate 4 that is the concave curved surface shape to the vertical range H scope of base plane is: 1mm-5mm, and best H scope is 1.5mm-2mm, best H is 2mm; Equally distributed seed suction hole 1 diameter range is Φ 2mm-Φ 6mm on the described seed absorbing plate 4; Further according to the difference of seed and preferred diameter is Φ 3.2mm or Φ 4.2mm or Φ 5.2mm.

The utlity model has following advantage:

Seed absorbing plate is owing to adopt curved design, make seed absorbing plate self have elastic force, seed absorbing plate is fixed on the axle by screw, under the effect of seed absorbing plate self elastic force and screw, make seed absorbing plate periphery and air cavity complete closed, improved the tight ness rating that seed absorbing plate combines with air cavity, strengthen the seal of seed absorbing plate and air cavity, avoid the phenomenon that leaks, improve the seed rate of inhaling; The 2nd,, by design, inhale the seed rate except that improving to the seed suction hole aperture on the seed absorbing plate, can also realize improving and accurately get the effect of planting.This suction seed device can be installed on the film precise sower of existing fertilising shop and use.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a seed absorbing plate front view of the present utility model;

Fig. 3 is Fig. 2 A-A cutaway view.

Embodiment

The utility model feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, but embodiment of the present utility model is not limited thereto:

Shown in accompanying drawing 1,2,3, the wherein label 1-3 in the accompanying drawing, expression respectively: 1-seed suction hole, 2-axis hole, 3-hole, 4-seed absorbing plate, 5-negative pressure cavity, 6-central shaft.

The utility model air-sucking type seed taking device comprises negative pressure cavity 5 and seed absorbing plate 4, seed absorbing plate 4 is round, be evenly distributed with seed suction hole 1 on the seed absorbing plate 4, be arranged on the central shaft 6 of negative pressure cavity, it is characterized in that, seed absorbing plate 4 is concave curved surface, and described concave curved surface is identical with umbrella shape or plate shape (showing as Fig. 3).Its its periphery under pressure can be closely cooperated with the contact-making surface of negative pressure cavity; The top of the described seed absorbing plate 4 that is the concave curved surface shape to the vertical range H of base plane is: 2mm; Equally distributed seed suction hole 1 diameter range is Φ 2mm-Φ 6mm on the described seed absorbing plate 4; Further according to the difference of seed and preferred diameter is: plant oily certain herbaceous plants with big flowers and adopt Φ 3.2mm, the plantation tree mallow is adopted Φ 4.2mm, and maize planting adopts Φ 5.2mm.The pine nut device is fixed on the seed absorbing plate by hole 3.

Though below design and embodiment according to the utility model purpose have been done to elaborate with reference to accompanying drawing; but those of ordinary skills can recognize; under the precondition that does not break away from the claim limited range; still can make various improvement and conversion to the utility model, and this improvement and conversion still should belong to protection domain of the present utility model.

Claims

1, air-sucking type seed taking device, comprise negative pressure cavity (5) and seed absorbing plate (4), seed absorbing plate (4) is round, be evenly distributed with seed suction hole (1) on the seed absorbing plate (4), be arranged on the central shaft (6) of negative pressure cavity, it is characterized in that seed absorbing plate (4) is concave curved surface, its its periphery under pressure can be closely cooperated with the contact-making surface of negative pressure cavity.

2, air-sucking type seed taking device according to claim 1 is characterized in that, the described concave curved surface shape seed absorbing plate (4) that is is the umbrella shape.

3, air-sucking type seed taking device according to claim 1 is characterized in that, the described concave curved surface shape seed absorbing plate (4) that is is the plate shape.

4, air-sucking type seed taking device according to claim 1 is characterized in that, the top of the described seed absorbing plate (4) that is the concave curved surface shape to the vertical range H scope of base plane is: 1mm-5mm.

5, air-sucking type seed taking device according to claim 1 is characterized in that, the top of the described seed absorbing plate (4) that is the concave curved surface shape to the vertical range H scope of base plane is: 1.5mm-2mm.

6, air-sucking type seed taking device according to claim 1 is characterized in that, the top of the described seed absorbing plate (4) that is the concave curved surface shape to the vertical range H of base plane is: 2mm.

7, air-sucking type seed taking device according to claim 1 is characterized in that, it is Φ 2mm-6mm that described seed absorbing plate (4) is gone up equally distributed seed suction hole (1) diameter range.

8, air-sucking type seed taking device according to claim 1 is characterized in that, it is Φ 3.2mm that described seed absorbing plate (4) is gone up equally distributed seed suction hole (1) diameter.

9, air-sucking type seed taking device according to claim 1 is characterized in that, it is Φ 4.2mm that described seed absorbing plate (4) is gone up equally distributed seed suction hole (1) diameter.

10, air-sucking type seed taking device according to claim 1 is characterized in that, it is Φ 5.2mm that described seed absorbing plate (4) is gone up equally distributed seed suction hole (1) diameter.