CN115943781B

CN115943781B - Air suction type seed metering device with adjustable seed cavity volume

Info

Publication number: CN115943781B
Application number: CN202310101845.9A
Authority: CN
Inventors: 唐汉; 王紫恒; 王金武; 徐福东; 赵佳乐; 徐常塑; 王奇
Original assignee: Northeast Agricultural University
Current assignee: Heilongjiang Shuangfu Machinery Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-06-02
Anticipated expiration: 2043-02-10
Also published as: CN115943781A

Abstract

An air suction type seed metering device with adjustable seed holding cavity volume belongs to agricultural machinery; a cylindrical shell and a negative pressure suction fan are fixedly arranged on a device frame, a circular seed suction barrel is rotatably arranged in the cylindrical shell, a suction hole and a fixed base plate are formed in the circular seed suction barrel, a cross-shaped track groove and a cross-shaped position control groove are respectively arranged on the base plate in a staggered 45-degree manner along the circumferential direction, four adjusting blocks are movably assembled in the cross-shaped track groove, a linkage plate with a limiting rod is inserted in the adjacent adjusting blocks in a pulling and drawing manner, the limiting rod is inserted in the cross-shaped position control groove, the circular ring is rotatably sleeved on the outer wall surface of the circular seed suction barrel along the circumferential direction, two ends of a driving rod are fixedly arranged on the circular ring and one adjusting block respectively, the suction hole is communicated with a corresponding seed containing cavity by a negative pressure air pipe, and a wind shield is arranged on the device frame through a support; the device realizes the variable adjustment of the volume of the seed containing cavity of the air suction type seed metering device, has strong applicability, wide application range, simple and convenient adjustment operation and high use efficiency.

Description

Air suction type seed metering device with adjustable seed cavity volume

Technical Field

The invention belongs to agricultural machinery, and mainly relates to a variable sowing air suction type seed metering device with an adjustable seed holding cavity volume.

Background

With the development of intensive agricultural operation and the improvement of the level of agricultural mechanization in China, in order to improve the agricultural operation efficiency and ensure the operation quality, the large-scale of the agricultural machinery becomes a development trend, and a large multi-row air suction type seeding operation machine with stronger adaptability becomes an urgent need for the current production operation. Wherein, the air-suction seed metering device is the key and core of the improvement and development of the technical level of the air-suction seeding operation machine. The existing negative pressure air suction type seed metering device has the defects of constant seeding operation amount, poor capability of meeting agricultural requirements and adapting to different crop varieties, narrow application range and low tool use efficiency because the seed suction quantity of the seed suction disc is determined and can not be adjusted.

Disclosure of Invention

The invention aims at solving the problems in the prior art, combines the actual requirements of the current agricultural operation, researches and designs the air suction type seed metering device with the adjustable volume of the seed holding cavity, and achieves the purposes of meeting the agricultural requirements of different sowing amounts of the sowing operation, adapting to the sowing use of various seeds, expanding the use range of the machine tool, improving the use efficiency of the machine tool and reducing the cost of purchasing the machine.

The invention aims to realize that a cylindrical shell with a seed feeding pipe is fixedly arranged on the inner side of a device frame, a circular seed sucking barrel is rotatably arranged in the cylindrical shell, a plurality of suction holes are uniformly distributed on the bottom wall of the circular seed sucking barrel along the circumferential direction, base plates with the same number as the suction holes are uniformly distributed on the circumferential outer surface of the circular seed sucking barrel along the circumferential direction, cross-shaped track grooves and cross-shaped position control grooves are respectively arranged on the circumferential outer surface of the base plates in a staggered 45-degree manner, adjusting blocks are respectively assembled in the four track grooves of the cross-shaped track grooves in a radial and repeatedly movable manner, a linkage plate is respectively inserted in the position between the adjacent adjusting blocks in a drawable manner, a limit rod is fixedly arranged on the lower end part of the linkage plate, the lower end part of the limit rod is slidably inserted in the cross-shaped position control groove, a circular ring is positioned on the circumferential outer surface of the circular seed sucking barrel, a motor is sleeved on the side edge of the circular seed sucking barrel along the circumferential direction, a rotary motor is fixedly arranged in the position of the circular seed sucking barrel, a motor is fixedly connected with a plurality of suction holes of rotary air sucking barrels in a rotary manner, a motor is correspondingly arranged on the side of the rotary air sucking barrel, a plurality of suction holes are correspondingly arranged on the rotary air suction barrel, a rotary suction fan is correspondingly arranged on the rotary air guide frame, a plurality of suction holes are correspondingly arranged on the rotary air guide frames, a rotary suction fan is correspondingly arranged on the side of the rotary air guide frames, a suction fan is correspondingly arranged on the suction hole is correspondingly, a suction hole is correspondingly arranged on the suction hole is correspondingly, and a suction hole is correspondingly, a suction device is arranged on the suction hole is rotatably arranged on the suction hole and the suction device, and the suction device is mounted on the suction device.

The invention realizes the volume adjustment of the seed holding cavity of the suction seed metering device, not only can change the seed sowing amount of the same crop, but also can change according to different crop seeds, has the characteristics of novel and unique structure, high applicability, wide application range, simple and convenient adjustment and operation, reliable use and great improvement of the use efficiency of the seeding operation machine, and provides technical support for the large-scale of the suction seeding machine.

Drawings

FIG. 1 is a three-dimensional schematic view of the overall structure of a seed cavity volume-adjustable air-suction seed metering device;

FIG. 2 is a schematic diagram of FIG. 1 in semi-section;

FIG. 3 is a top two-dimensional schematic view of FIG. 2;

FIG. 4 is an enlarged view of a partial structure of the suction seed metering device with the volume of the seed containing cavity adjustable;

FIG. 5 is an enlarged view of portion A of FIG. 2;

fig. 6 is a plan view of fig. 5.

Part number description in the drawings:

1. the seed feeding pipe, 2, a cylindrical shell, 3, a machine frame, 4, a negative pressure suction fan, 5, a support, 6, a suction hole, 7, a wind shield, 8, a driving rod, 9, an adjusting block, 10, a circular ring, 11, a base plate, 12, a limit rod, 13, a cross-shaped position control groove, 14, a linkage plate, 15, a circular seed suction barrel, 16, a negative pressure air pipe, 17, a cross-shaped track groove, 18, a seed containing cavity, 19 and a motor.

Detailed Description

The following describes the inventive embodiments in detail with reference to the drawings. The utility model provides a seed cavity volume adjustable air suction type seed metering device, including negative pressure suction fan 4 and motor 19, the cylindrical casing 2 of carrying seed pipe 1 is admittedly installed on ware frame 3 inboard portion, rotationally install circular seed suction barrel 15 in cylindrical casing 2, set up a plurality of suction holes 6 along circumference direction equipartition on the circular seed suction barrel 15 diapire, the circumference direction equipartition is gone up in circular seed suction barrel 15 circumference surface and is admittedly adorned the bed plate 11 that equal number of suction holes 6 is equal, set up cross track groove 17 and cross accuse position groove 13 along circumference direction each other on the bed plate 11 surface and be dislocation 45 degrees respectively, radially can be moved in four track grooves of cross track groove 17 and be equipped with regulating block 9 respectively repeatedly, constitute seed cavity 18 in the relative interior terminal surface position of four regulating blocks 9 that correspond to each other and dispose, the driving rod 8 is fixedly arranged on the circular ring 10, the driving rod 8 is fixedly connected with one regulating block 9, the negative pressure suction fan 4 and the motor 19 are respectively fixedly arranged on two opposite outer side parts of the device frame 3, the suction port of the negative pressure suction fan 4 is communicated with a plurality of suction holes 6 on the bottom wall of the circular seed suction barrel 15, a plurality of negative pressure air pipes 16 are communicated with a plurality of suction holes 6 and corresponding seed holding cavities 18, the motor shaft of the motor 19 is fixedly connected with the rotation center part of the bottom wall of the circular seed suction barrel 15, the wind shield 7 is arranged on the device frame 3 through the support 5, the wind shielding plate 7 is in open or closed fit with the plurality of air suction holes 6 in sequence. When the seed metering device is used, the negative pressure suction fan 4 is started, negative pressure wind power of the negative pressure suction fan 4 enables the cavity of the seed accommodating cavity 18 formed by the four adjusting blocks 9 on the surface of the circumferential outer wall of the circular seed metering barrel 15 to be in a negative pressure state through the suction hole 6 and the negative pressure wind pipe 16, the motor 19 drives the circular seed metering barrel 15 to rotate, when the seed accommodating cavity 18 with the negative pressure of the circular seed metering barrel 15 rotates to the position below the seed feeding pipe 1 of the cylindrical shell 2, the wind shielding plate 7 installed on the device frame 3 through the support 5 seals the suction hole 6 communicated with the seed accommodating cavity 18, negative pressure suction in the seed accommodating cavity 18 disappears, and seeds are discharged out of the device under the action of self gravity, so that seed metering operation is completed. And sequentially and continuously circulating.

When the volume of the seed containing cavity 18 is regulated according to the sowing amount requirement or different crop seeds, the rotary ring 10 is regulated on the circular seed sucking barrel 15 along the circumferential direction, the regulating blocks 9 connected with the rotary ring are firstly driven by the driving rod 8 to slide in the cross-shaped track grooves 13 on the base plate 11, and synchronously, the other three regulating blocks 9 are sequentially driven to slide relatively in the cross-shaped track grooves 13 by the pulling and moving of the linkage plate 14, so that the volume of the seed containing cavity 18 formed by the inner end surrounding of the four regulating blocks 9 is increased or reduced, and the air sucking sowing agricultural requirements of different sowing amounts or different crop varieties are met. The limit rod 12 fixedly arranged on the lower end part of the linkage plate 14 can ensure the reliability of the insertion of the linkage plate 14 and the adjusting block 9 and can not be separated under the cooperation of the cross-shaped position control groove 13.

Claims

1. The utility model provides a flourishing seed chamber volume adjustable air suction type seed metering ware, includes negative pressure suction fan (4) and motor (19), its characterized in that: a cylindrical shell (2) with seed feeding pipes (1) is fixedly arranged on the inner side of a device frame (3), a circular seed sucking barrel (15) is rotatably arranged in the cylindrical shell (2), a plurality of air suction holes (6) are uniformly distributed on the bottom wall of the circular seed sucking barrel (15) along the circumferential direction, base plates (11) with the same number as the air suction holes (6) are uniformly distributed on the circumferential outer surface of the circular seed sucking barrel (15), cross-shaped track grooves (17) and cross-shaped position control grooves (13) are respectively arranged on the outer surface of the base plates (11) along the circumferential direction in a staggered 45 DEG, regulating blocks (9) are respectively assembled in the four track grooves of the cross-shaped track grooves (17) in a radial and repeatedly movable manner, seed holding cavities (18) are formed at the positions of the opposite inner end surfaces of the four regulating blocks (9) which are correspondingly arranged, a linkage plate (14) is respectively inserted in a drawable manner between the adjacent regulating blocks (9), limit rods (12) are fixedly arranged on the lower end parts of the linkage plate (14), the limit rods (12) are respectively arranged on the lower end parts of the linkage plate (12), the limit rods (12) are slidably arranged on the circumferential side surfaces of the circular base plates (10) in the circumferential direction, the circumferential direction (10) are rotatably arranged on the circumferential outer surfaces of the rotary positions of the base plates (10), the driving rod (8) is fixedly connected with an adjusting block (9), a negative pressure suction fan (4) and a motor (19) are fixedly installed on two opposite outer side parts of the device frame (3) respectively, an air suction port of the negative pressure suction fan (4) is mutually communicated with a plurality of air suction holes (6) on the bottom wall of the circular seed suction barrel (15), a plurality of negative pressure air pipes (16) are communicated with a plurality of air suction holes (6) and corresponding seed holding cavities (18), a motor shaft of the motor (19) is fixedly connected with the rotation center part of the bottom wall of the circular seed suction barrel (15), a wind shielding plate (7) is installed on the device frame (3) through a support (5), and the wind shielding plate (7) is sequentially in opening or closing fit with the plurality of air suction holes (6).