Agricultural grain sieving mechanism of steerable falling grain speed
The utility model relates to the technical field of agricultural machinery, in particular to an agricultural grain screening device capable of controlling falling speed.
Grain refers to the particles of grain. In the process of growing and maturing grains, the size of fruits produced by the grains is different due to various factors, and screening operation is often required after harvesting.
When the grains are screened, some grains are screened manually, which wastes time and labor, the screening effect is poor, the screening speed is difficult to control, and the grains are easy to spill; when the existing grain screening machine is used for screening grains, the speed of the grains falling into the screening device is difficult to control, when the grains fall too fast, the blocking phenomenon is easy to occur, and when the grains fall too slow, the working efficiency of the grain screening device is reduced; and the sundries falling into the screening mesh screen are difficult to clean, so that the screening effect is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an agricultural grain screening device capable of controlling the falling speed, which aims to solve the problems that the speed of grains falling into the screening device is difficult to control when the grains are screened by the existing grain screening machine provided by the background technology, when the grains fall into the screening device too fast, the blocking phenomenon is easy to occur, and the working efficiency of the grain screening device is reduced; and the cleaning operation of the screening net plate is difficult to carry out.
In order to achieve the above object, the utility model provides a following technical scheme: an agricultural grain screening device capable of controlling falling speed comprises an outer shell, a supporting plate, a screening screen plate and an electric telescopic rod, wherein the supporting plate is fixed on two sides of the outer shell, a sliding groove is formed in the upper end face of the supporting plate, a pushing block is arranged at the upper end of the supporting plate, the side face of the pushing block is connected with a supporting rod, one end of the supporting rod penetrates through the side face of the outer shell and is connected with a baffle plate, a protruding strip is arranged on the upper surface of the baffle plate, a rotating shaft is arranged on the side face of the bottom end of the baffle plate and is connected to a swinging rod, the swinging rod is arranged on the inner side of the outer shell through a fixing column, a locking plate is arranged on the upper end face of the pushing block and is connected with a locking screw rod, the fixing blocks are fixed on two side faces of the outer shell and are connected, and electric telescopic handle's flexible end passes the shell body and is connected with the scraper blade, the block groove has been seted up to the medial surface of shell body, and the side of shell body is equipped with the dust removal case, the top of shell body is equipped with the feed inlet, and the bottom of shell body is equipped with the discharge gate, the locking plate is seted up threaded through-hole.
Preferably, the pushing block forms a sliding structure with the supporting plate through a sliding groove, and is connected with the outer shell in a sliding mode through the supporting rod.
Preferably, the striker plate passes through the swinging arms and constitutes revolution mechanic with the shell body, and the striker plate is provided with 2 to the striker plate is the symmetric distribution about the axis of shell body.
Preferably, the locking plate and the pushing block are of an integrated structure, and the locking plate is in threaded connection with the locking screw through a threaded through hole.
Preferably, the scraper blade and the screening otter board form a sliding structure through an electric telescopic rod, and the telescopic length of the electric telescopic rod is greater than the length of the screening otter board.
Preferably, the scraper and the engaging groove form an engaging structure, and the height of the engaging groove is equal to the height of the scraper.
Compared with the prior art, the beneficial effects of the utility model are that: the agricultural grain screening device capable of controlling the falling speed,
1. the grain screening device comprises a supporting plate arranged on an outer shell, a pushing block and a sliding structure formed by the supporting plate through a sliding groove, a baffle plate is connected with the pushing block through a supporting rod, the bottom end of the baffle plate is connected with a rotating shaft through a swinging rod, the rotating shaft is rotatably connected with an outer shell through a fixed column, so that when the pushing block slides on the sliding groove, the supporting rod drives the baffle plate to rotate on the rotating shaft, 2 baffle plates symmetrically arranged in the outer shell can control the grain blanking speed in the outer shell, the grain blanking speed is prevented from being too high, and the screening screen plate is blocked;
2. the locking plate is provided with a threaded through hole, a locking screw penetrates through the threaded through hole, the end part of the locking screw is in threaded connection with the fixed block, the locking plate and the pushing block are integrally arranged, the pushing plate can be fixed by the locking screw, the striker plate is supported by the support rod, the impact force of grains falling onto the striker plate is prevented, and the striker plate is loosened;
3. the electric telescopic handle that the shell body outside set up, electric telescopic handle end connection's scraper blade can strike off the operation to the debris that bond on the screening otter board, prevents that debris from blockking up the screening otter board, influences the screening effect of screening otter board, and the inboard block groove that sets up of shell body can influence the screening operation of sieving mechanism in can blocking the block inslot with the scraper blade.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of the connection structure of the support plate, the support rod and the striker plate of the present invention;
fig. 3 is a schematic view of the connecting structure of the striker plate, the swing rod and the rotating shaft of the present invention;
FIG. 4 is a schematic view of the connection structure of the support plate, the locking plate and the support rod;
fig. 5 is a schematic view of the three-dimensional structure of the locking plate of the present invention.
In the figure: 1. an outer housing; 2. a support plate; 3. a sliding groove; 4. a pushing block; 5. a support bar; 6. a striker plate; 7. a raised strip; 8. a swing lever; 9. a rotating shaft; 10. fixing a column; 11. a locking plate; 12. locking the screw rod; 13. a fixed block; 14. screening a screen plate; 15. an electric telescopic rod; 16. a squeegee; 17. a clamping groove; 18. a dust removal box; 19. a feed inlet; 20. a discharge port; 21. a threaded through bore.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: an agricultural grain screening device capable of controlling falling speed comprises an outer shell 1, supporting plates 2, sliding grooves 3, pushing blocks 4, supporting rods 5, a material blocking plate 6, protruding strips 7, a swinging rod 8, a rotating shaft 9, fixing columns 10, a locking plate 11, locking screws 12, fixing blocks 13, a screening screen plate 14, an electric telescopic rod 15, a scraper 16, a clamping groove 17, a dust removal box 18, a feeding hole 19, a discharging hole 20 and threaded through holes 21, wherein the supporting plates 2 are fixed on two sides of the outer shell 1, the sliding grooves 3 are formed in the upper end faces of the supporting plates 2, the pushing blocks 4 are arranged at the upper ends of the supporting plates 2, the supporting rods 5 are connected to the side faces of the pushing blocks 4, one ends of the supporting rods 5 penetrate through the side faces of the outer shell 1 to be connected with the material blocking plate 6, the protruding strips 7 are arranged on the upper surface of the material blocking plate 6, the rotating shaft, and swinging arms 8 set up in 1 inboardly of shell through fixed column 10, promote 4 up end of piece and be equipped with locking plate 11, and be connected with locking screw 12 on the locking plate 11, the both sides face of shell body 1 is fixed with fixed block 13, and fixed block 13 is connected with locking screw 12, screening otter board 14 sets up in 1 inside bottom of shell body, electric telescopic handle 15 is fixed in the 1 bottom outside of shell body, and electric telescopic handle 15's flexible end passes shell body 1 and is connected with scraper blade 16, block groove 17 has been seted up to the medial surface of shell body 1, and the side of shell body 1 is equipped with dust removal case 18, the top of shell body 1 is equipped with feed inlet 19, and the bottom of shell body 1 is equipped with discharge gate 20, threaded through.
Promote piece 4 and constitute sliding construction through sliding tray 3 and backup pad 2, and promote piece 4 and pass through bracing piece 5 and 1 sliding connection of shell body, through rotating locking screw 12, with locking screw 12 threaded connection's locking plate 11 removal, locking plate 11 with promote piece 4 structure as an organic whole, and then realize promoting that piece 4 slides in sliding tray 3.
Striker plate 6 constitutes revolution mechanic through swinging arms 8 and shell body 1, and striker plate 6 is provided with 2 to striker plate 6 is the symmetric distribution about the axis of shell body 1, promotes piece 4 and slides to the inboard and drive bracing piece 5 and slide, and then realizes driving striker plate 6 and rotate on axis of rotation 9 through swinging arms 8.
Locking plate 11 and promotion piece 4 are the integral structure, and locking plate 11 passes through screw thread through-hole 21 and locking screw 12 threaded connection, and locking screw 12 rotates and drives locking plate 11 and slide, and locking plate 11 and promotion piece 4 are the integral structure, and then realize promoting that piece 4 slides in sliding tray 3.
Scraper blade 16 passes through electric telescopic handle 15 and constitutes sliding construction with screening otter board 14, and electric telescopic handle 15's flexible length is greater than the length of screening otter board 14, and electric telescopic handle 15 is flexible to drive scraper blade 16 reciprocating motion on screening otter board 14, and then realizes scraping function to screening otter board 14, prevents that debris from piling up on screening otter board 14, influences the screening efficiency of screening otter board 14.
The scraper 16 and the clamping groove 17 form a clamping structure, the height of the clamping groove 17 is equal to that of the scraper 16, the electric telescopic rod 15 retracts to drive the scraper 16 to be clamped in the clamping groove 17, and the effect that sundries are bonded on the scraper 16 to influence the scraping operation of the scraper 16 is prevented.
The working principle is as follows: according to the attached drawings 1-5, when the grain screening device is used, the grain screening device is placed beside a grain pile to be screened, the electric telescopic rod 15 is electrified, grains to be screened are poured into the grain pile from the feeding hole 19, the grains fall onto the material baffle 6 and then fall onto the screening screen plate 14 from the material baffle 6, the screened grains fall out from the discharging hole 20, sundries stay on the screening screen plate 14, the electric telescopic rod 15 is started, the electric telescopic rod 15 stretches and retracts to drive the scraper 16 to clean the sundries on the screening screen plate 14, and the cleaned sundries fall into the dust removal box 18;
when the distance between 2 striker plates 6 in the outer casing 1 needs to be adjusted, simultaneously rotate the locking screw 12 of outer casing 1 both sides, locking plate 11 inwards moving through 21 threaded connection of screw thread through-hole, promote piece 4 inwards moving with 11 integration of locking plate, and then drive bracing piece 5 inwards moving, 6 inwards moving of striker plate that bracing piece 5 is connected, the swinging arms 8 of 6 bottom connections of striker plate, swinging arms 8 rotate with fixed column 10 through axis of rotation 9 and are connected, striker plate 6 is under the promotion of bracing piece 5, 8 casees of swinging arms that 6 bottom end portions of striker plate rotate to be connected rotate, and then realize adjusting the distance between 2 striker plates 6, prevent that the grain speed from taking place blocking phenomenon to screening otter board 14 too fast, improve grain sieving mechanism's screening effect.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.