CN-119500548-B - Seed grading plant is used in alfalfa crossbreeding

CN119500548BCN 119500548 BCN119500548 BCN 119500548BCN-119500548-B

Abstract

The application relates to the technical field of alfalfa breeding, in particular to a seed grading device for alfalfa hybridization breeding, which comprises a screen assembly, wherein the screen assembly comprises a screen seat and a first screen, one end part of the first screen is a screen feeding part, the other end part of the first screen is a screen discharging part, a part, close to the screen discharging part, of the first screen is rotatably connected to the screen seat, an elastic component and a barrier strip are arranged on the screen seat, the elastic component is used for providing elastic force to support the part, close to the screen feeding part, of the first screen, so that an included angle alpha is formed between the first screen and the screen seat, a through hole is formed in the first screen, the through hole is used for penetrating the barrier strip, and the part, close to the screen, of the barrier strip is used for blocking the flow of raw materials on the first screen. The seed grading device for alfalfa crossbreeding can achieve the purpose of simultaneously breeding and removing impurities from a large amount of alfalfa seeds mixed with impurities, and improves the impurity removing effect of crossbreeding the alfalfa seeds.

Inventors

WANG XIAOLONG
TA NA
WANG JIAN
WANG HONGWEI
ZHANG LIYAN
BAO HONGXIA
LI SHASHA
CHAI HUA
YANG ZHAO
WANG JIANLI
XU YANXIA
WU YUE
LI YANG
ZHANG FENGJIE

Assignees

黑龙江省农业科学院畜牧兽医分院

Dates

Publication Date: 20260512
Application Date: 20241128

Claims (9)

1. The seed grading device for alfalfa hybridization breeding is characterized by comprising a screen assembly, wherein the screen assembly comprises a screen seat and a first screen, the first screen is used for breeding seeds and removing impurities, one end part of the first screen is a screen feeding part, the other end part of the first screen is a screen discharging part, and the part, close to the screen discharging part, of the first screen is rotationally connected to the screen seat; the screen seat is provided with an elastic component and a barrier strip, the elastic component is used for providing elastic force to support a part, close to a screen feeding part, of the first screen so as to form an included angle alpha between the first screen and the screen seat, the first screen is provided with a through hole, the through hole is used for penetrating the barrier strip, and a part, located on the first screen, of the barrier strip is used for blocking the flow of raw materials on the first screen; after the raw materials are input into the screen feeding part, the bearing capacity of the first screen is increased, so that the load of the elastic component is increased, the included angle alpha is reduced, and the length of the barrier strip extending out of the through hole to the first screen is increased; The screen seat is provided with a barrier strip group, the barrier strip group comprises two barrier strips, a single barrier strip is matched with a single through hole, the middle section of the barrier strip is a barrier strip middle section, and the barrier strip middle section is arc-shaped; the upper section of the barrier strip is a barrier strip upper section, the lower section of the barrier strip is a barrier strip lower section, and the barrier strip lower section is elastic, so that the barrier strip lower section can bend after being stressed; The barrier strip middle section is located on the first screen when the first screen is not loaded with raw materials, the barrier strip middle section gradually moves towards the lower side of the first screen when the included angle alpha gradually decreases, the first arc section and the second arc section sequentially penetrate through the through hole, the distance between barrier strip upper sections on two barrier strips in the barrier strip group gradually decreases, and the distance between barrier strip upper sections on two barrier strips in the barrier strip group gradually increases when the second arc section penetrates through the through hole.
2. The seed grading device for alfalfa crossbreeding according to claim 1, wherein the elastic component comprises a telescopic tube, a first spring and a base, one end part of the telescopic tube is connected with the screen seat, the other end part of the telescopic tube is used for supporting the first screen, the telescopic tube comprises a plurality of sub-tubes, and the sub-tubes are sleeved with each other, so that the telescopic tube can stretch; The sub-sleeve on the telescopic sleeve for being connected with the screen seat is a first sub-sleeve, the sub-sleeve on the telescopic sleeve for supporting the first screen is a second sub-sleeve, the base is arranged in the first sub-sleeve, the first spring is arranged in the telescopic sleeve, one end of the first spring is connected with the base, the other end of the first spring is connected with the second sub-sleeve, and the position of the base relative to the first sub-sleeve along the length direction of the first sub-sleeve is adjustable.
3. The seed grading device for alfalfa crossbreeding according to claim 2, wherein the elastic member further comprises a locking member, wherein a movable groove is formed in the side wall of the first sub-sleeve, the locking member is connected with the base through threads after penetrating through the movable groove, and the locking member is rotated relative to the base to enable the locking member to abut against or release the abutting action with the outer wall of the first sub-sleeve, so that the base is fixed relative to the first sub-sleeve or movable relative to the first sub-sleeve.
4. The seed grading device for alfalfa crossbreeding of claim 3, wherein a plurality of barrier rib groups are arranged on the sieve base, and the barrier rib groups are distributed along the length direction and/or the width direction of the sieve base.
5. The seed classifying device for alfalfa crossbreeding according to claim 4, wherein the upper end of the barrier rib is located in the through hole when the first screen is not loaded with the material and the telescopic tube supports the first screen.
6. The seed classifying device for alfalfa crossbreeding according to claim 5, wherein said sieve base comprises a second sieve having a smaller sieve diameter than that of the first sieve.
7. The seed classifying device for alfalfa hybridization breeding according to claim 6, wherein the screen seat further comprises a base, the second screen is arranged on the base, a clamping groove is formed in the base, a clamping block is arranged on the first screen and is clamped in the clamping groove, so that the first screen is rotatably connected to the screen seat, and the clamping block can be separated from the clamping groove.
8. The seed classifying device for alfalfa crossbreeding according to claim 7, wherein a shroud is provided on the first screen and/or the second screen, and the shroud is used for preventing the material on the corresponding first screen or second screen from scattering out.
9. The seed grading device for alfalfa crossbreeding according to any one of claims 1 to 8, further comprising a vibration assembly, wherein the vibration assembly comprises a first bottom plate, a second bottom plate and a driving motor, a chute is arranged on the first bottom plate, the second bottom plate is clamped in the chute, the second bottom plate can move relative to the first bottom plate along the length direction of the chute, the driving motor is arranged on the first bottom plate, and the driving motor is used for driving the second bottom plate to reciprocate along the length direction of the chute; the screen assembly is arranged on the second bottom plate, and the screen assembly vibrates along the horizontal direction when the vibration assembly drives the second bottom plate to reciprocate along the length direction of the sliding chute.

Description

Seed grading plant is used in alfalfa crossbreeding Technical Field The invention relates to the technical field of alfalfa breeding, in particular to a seed grading device for alfalfa hybridization breeding. Background Alfalfa is perennial root herbaceous plant, can be used as forage grass, has higher palatability and quality, can increase milk yield by more than 50% when being used for feeding dairy cows, and can be used as an important honey source for honey in the growing process besides forage grass, and can promote honey collection and development of the apiculture. Alfalfa is bred by means of seeds, alfalfa grass is required to be harvested firstly in the process of harvesting alfalfa seeds, and then the harvested alfalfa grass is dried, so that the alfalfa seeds can be stored for a long period of time and cannot go moldy, after the drying is finished, the alfalfa seeds are separated from pods by using a threshing machine generally, and then impurities in the alfalfa seeds are removed through screening. The method is characterized in that the alfalfa seeds are subjected to impurity removal before hybridization breeding, in the process, a breeding grading device is generally used for impurity removal operation, a feeding part and an inclined screen are generally arranged on the breeding grading device, when the alfalfa seeds mixed with impurities are thrown into the feeding part during impurity removal, the alfalfa seeds mixed with impurities flow to the screen, the alfalfa seeds can pass through the screen, the impurities are located on the screen, the impurities flow out from the tail end of the screen, and the alfalfa seeds subjected to impurity removal are located below the screen. Although the current grading device for breeding can effectively remove impurities in alfalfa seeds when the alfalfa seeds are subjected to impurity removal, in the actual use process, the inventor finds that the current grading device for breeding still has the defects, specifically: After the alfalfa seeds are separated from the pods by using the threshing machine, the obtained mixture containing the alfalfa seeds, the pods and the alfalfa leaves is subjected to impurity removal by using the breeding grading device, the flow rate of the alfalfa seeds mixed with impurities in the feeding part to the screen mesh can be increased by increasing the opening size of the feeding part, the alfalfa seeds mixed with impurities in the feeding part can flow to the screen mesh more favorably, the purpose of simultaneously removing the impurities from a large amount of alfalfa seeds mixed with impurities is achieved, the time for impurity removal grading of the alfalfa seeds is shortened, however, after the flow rate of the alfalfa seeds mixed with impurities in the feeding part to the screen mesh is increased, a large amount of alfalfa seeds mixed with impurities flow to the screen mesh at the same time, under the condition that more impurities exist in the alfalfa seeds, the probability of blocking the screen mesh by the impurities is increased, the difficulty of the alfalfa seeds passing through the screen mesh can be increased, and in the process that the alfalfa seeds mixed with impurities continuously flow to the screen mesh from the high position along the inclined screen mesh, part of the alfalfa seeds also passes through the screen mesh along with the alfalfa seeds, and the alfalfa seeds mixed with impurities are not fully removed from the position of the alfalfa seeds. Therefore, in view of the above-mentioned shortcomings, there is a need to design a seed classifying device for alfalfa crossbreeding so as to achieve the purpose of simultaneously breeding and removing impurities from alfalfa seeds mixed with a large amount of impurities and to improve the impurity removing effect when the alfalfa seeds are removed. Disclosure of Invention The invention aims to provide a seed grading device for alfalfa hybridization breeding, which aims at overcoming the defects of the prior grading device for breeding in the process of removing impurities from alfalfa seeds, so as to achieve the aim of simultaneously removing impurities from a large amount of alfalfa seeds mixed with impurities in the breeding process and improve the impurity removing effect in the process of removing impurities from alfalfa seeds. In order to achieve the above object, the present invention provides the following technical solutions: The utility model provides a alfalfa crossbreeding is with seed grading plant, includes screen assembly, screen assembly includes screen frame and first screen cloth, first screen cloth is used for carrying out breeding edulcoration to the seed, one end of first screen cloth is screen cloth feed portion, and another end is screen cloth discharge portion, the part that is close to screen cloth discharge portion on the first screen cloth rotates to be connected on the screen frame; the screen seat is provided with an elastic co