CN205961781U - Strength double -layer drum formula seed metering device - Google Patents

Abstract

The utility model discloses a pneumatic double-layer drum type seed metering device, which comprises a transmission shaft, an inner drum, an outer drum, a ventilation disc, a seed box, an electromagnetic exciter and a seed guiding device. The inner drum is installed on the transmission On the shaft, one end of the inner drum is matched with the ventilation plate, the outer drum is sleeved on the inner drum, and the outer drum is matched with the seed box, and the seed box is connected to the seed box through the connecting plate. The electromagnetic exciter is connected, and the lower end of the outer drum is provided with a seed guiding device for receiving and guiding seeds; the inside of the inner drum is provided with a number of ventilation grooves along the axial direction, and the outer surface of the inner drum is provided with A number of air pressure holes through which the ventilation groove is connected. The seeds located in the negative pressure area of the utility model are adsorbed on the holes of the outer drum, and when the outer drum rotates to the positive pressure area with the seeds, the seeds are evenly scattered from the holes under the blowing of gravity and air flow, with simple structure , High operating efficiency, reducing the probability of re-seeding, missing seeding and seed damage.

Description

A kind of pneumatic double-layer drum type seed metering device

technical field

The utility model belongs to the technical field of sowing crops, in particular to a pneumatic double-deck drum type seeding device.

Background technique

The seed meter is one of the important parts of the seeder. Its function is to quantitatively separate the indeterminate chaotic aggregates in the seed box of the seeder into uniform seed flow or single seed, so as to control the seeding amount and realize Sow evenly. There are many kinds of seed metering devices, mainly divided into mechanical seed metering devices and pneumatic seed metering devices. Mechanical seed metering devices have simple structure and low cost, but have strict requirements on the geometric size of seeds. , the seeds are easily damaged by extrusion, and the precision sowing degree is poor. Pneumatic seed metering devices mainly include air suction type, air blowing type and air pressure type. Among them, the air suction seed metering device can overcome the shortcomings of the above-mentioned mechanical seed metering device. The unique suction hole can realize the planting requirements of different crops, and has the advantages of small seed damage.

Among them, the drum-type seed metering device has the advantage of continuous operation, and is widely used in rice seedling seeding lines, but research on field direct seeding of rice bud seeds is relatively rare.

There are two types of rice planting: transplanting and live broadcasting. Among them, live broadcasting has the characteristics of saving time and labor. It is the core of the precision seeder.

Utility model content

The purpose of this utility model is to propose a pneumatic double-deck roller-type seed metering device, the purpose is to solve the problem of the single form of the existing rice direct seeding mechanical seed metering device, and a kind of collection and row seed metering designed for the super hybrid rice hole sowing amount is too large device. According to the material characteristics of different rice species, the required number and size of holes can be changed conveniently and quickly. It can meet the precision hole sowing requirements of super hybrid rice, realize continuous sowing, ensure operation quality, improve operation requirements, reduce labor intensity and operation cost, and has a good application prospect.

The technical solution adopted in the utility model: a pneumatic double-deck roller type seeding device, including a transmission shaft, an inner roller, an outer roller, a ventilation disc, a seed box, an electromagnetic exciter and a seed guide device, and the inner roller is installed On the transmission shaft, one end of the inner drum is connected with the ventilation plate, the outer drum is sleeved on the inner drum, the outer drum is in contact with the seed box, and the seed box Connected to the electromagnetic exciter through a connecting plate, the lower end of the outer drum is provided with a seed guiding device for receiving and guiding seeds; inside the inner drum is provided with a number of ventilation grooves along the axial direction, and on the outer surface of the inner drum A number of air pressure holes connected with the ventilation groove are provided; at least one type of hole is provided on the outer cylinder; a positive pressure port and a negative pressure port are provided at one end of the vent disc.

Preferably, positive pressure grooves and negative pressure grooves are opened inside the ventilation plate.

Preferably, the type holes are arranged in a staggered manner, and the type holes correspond to the air pressure holes one by one.

Preferably, the diameter of the air pressure hole is larger than the diameter of the type hole.

Preferably, the seed introducing device includes a seed introducing tube air distributor and a seed introducing tube.

Preferably, several seed guide plates are arranged inside the seed box, and the seed guide plates are arranged in a non-parallel manner.

Preferably, the seed guide plate is arranged inside the seed box in the form of bolts and nuts.

Preferably, a seed cleaning brush is provided at the contact between the lower part of the seed box and the outer cylinder.

Preferably, bearing seats are provided at both ends of the transmission shaft.

Preferably, a compression spring is arranged between the ventilation disc and the bearing seat.

Compared with the prior art, the beneficial effects of the utility model are: (1) The utility model adopts the cooperating arrangement of the inner drum and the outer drum, which can effectively alleviate the problem of seeds blocking the holes, and quickly change the number and size of the holes (2) The utility model makes the seed box vibrate through the cooperating arrangement of the electromagnetic exciter and the seed guide plate inside the seed box, and realizes that the seeds evenly flow to the seed box and the drum, which can prevent the seeds in the seed box from being piled up due to accumulation. The problem of not being able to flow to the discharge port occurs, and it plays a role in dredging and accelerating the flow of seeds, which can further ensure the stability and reliability of the work; (3) the utility model adopts the method of lateral ventilation, which effectively solves the problem of (4) The utility model has a simple design structure, is easy to process and assemble, has low cost of use, is easy to operate, has no damage to the seeds, and has a high survival rate.

Description of drawings

Fig. 1 is a structural diagram of a pneumatic double-layer drum type seed metering device of the present invention.

Fig. 2 is a side view of a pneumatic double-layer drum type seed metering device of the present invention.

Fig. 3 is an axonometric view of the inner drum.

Fig. 4 is an axonometric view of the outer cylinder.

Fig. 5 is an axonometric view of the seed guiding device.

detailed description

The technical scheme of the utility model is further described below in conjunction with specific embodiments.

Referring to Fig. 1 to Fig. 5, a pneumatic double-deck drum type seeding device includes a transmission shaft 4, an inner drum 2, an outer drum 14, an aeration disc 1, a seed box 5, an electromagnetic vibrator 41 and a seed guiding device. The inner drum 2 is installed on the transmission shaft 4, wherein the inner drum 2 can be set on the transmission shaft 4 in a keyed manner; one end of the inner drum 2 is connected with the ventilation plate 1, and One end is positioned and pressed by a compression spring 18, the diameter of the compression spring 18 is larger than the diameter of the transmission shaft 4, wherein the middle part of the ventilation disc 1 is provided with a through hole slightly larger in diameter than the transmission shaft 4 and Fitted and installed on the transmission shaft 4, the two ends of the transmission shaft 4 are provided with bearing seats 19, and the whole of the ventilation disk 1 is locked by the compression spring 18 on the bearing seat 19, and in the A spring locking device 13 is also provided between the bearing seat 19 and the compression spring 18; the outer roller 14 is sleeved on the inner roller 2 or the outer roller 14 is connected to the inner roller 2 through set screws , the outer drum 14 can be rolled and fixed on the outer circumference of the inner drum 2 according to the number and size of the holes; the outer drum 14 cooperates with the seed box 5, and the seed box 5 abuts against the outer drum On the outer peripheral surface of 14, the mating surface of seed box 5 and outer cylinder 14 is sealed with felt, and described seal is industrial felt, but is not limited to industrial felt, and the material with better sealing performance is also suitable for seal.

In the technical solution of the present utility model, by adopting the cooperating arrangement of the inner drum 2 and the outer drum 14, the problem of seeds blocking the holes can be effectively alleviated, and the number and size of the holes can be changed quickly.

The connecting plate 40 is connected to the electromagnetic exciter 41, and the lower end of the outer drum 14 is provided with a seed guiding device for receiving and guiding seeds; the inside of the inner drum 2 is provided with a number of ventilation grooves 3 along the axial direction, so that The ventilation groove 3 is an incompletely penetrated groove, and the outer surface of the inner drum 2 is provided with a number of air pressure holes 6 connected with the ventilation groove 3; the outer cylinder 14 is provided with at least one type of hole 7, so The size of the type hole 7 is smaller than the size of the seed to be sown; the type hole 7 on the outer cylinder 14 is installed in cooperation with the air pressure hole 6 of the inner cylinder 2; seed stirring teeth can also be installed on the outer cylinder 14; One end of the ventilation disc 1 is provided with a positive pressure port 8 and a negative pressure port 9 .

In the technical solution of the utility model, by adopting the way of lateral ventilation, the phenomenon of poor sealing performance of positive and negative air pressure separated by the internal partition plate of the drum is effectively solved.

Positive pressure grooves and negative pressure grooves are provided inside the ventilation plate 1, the type holes 7 are arranged in a staggered manner, and the type holes 7 correspond to the air pressure holes 6 one by one, and the air pressure holes 6 The diameter is greater than that of the type hole 7 , and the seed introducing device includes a seed introducing tube air distributor 30 and a seed introducing tube 33 .

Described seed box 5 inside is provided with several seed guide plates 15, and described seed guide plate 15 is arranged in non-parallel mode, and seed guide plate 15 can be connected with seed box 5 front and rear two plates respectively, has on the seed box 5 inner surfaces Arc-shaped groove, one end of the seed guide plate is provided with a screw thread matched with the arc-shaped groove to realize a mating connection, or the seed guide plate 15 and the seed box 5 are fixedly connected by screws and bolts, and can be used according to the characteristics of agricultural materials of actual rice seeds Floating up and down to form different first, second or multiple seed flow openings, reducing the phenomenon of rice seed arching.

In the technical solution of the present utility model, the cooperating arrangement of the electromagnetic exciter 41 and the seed guide plate 15 inside the seed box 5 causes the seed box 5 to vibrate, so that the seeds evenly flow to the seed box 5 and the drum, which can prevent the seed box from 5. The seeds in 5 cannot flow to the discharge port due to accumulation, and play a role in dredging and accelerating the flow of seeds, which can further ensure the stability and reliability of the work.

The seed guide plate 15 is arranged inside the seed box 5 in the form of bolts and nuts, and a seed cleaning brush is arranged at the abutment between the lower part of the seed box 5 and the outer drum, and the seed cleaning brush and the outer drum 14 are interference fit.

Embodiment one

Referring to Fig. 1 to Fig. 5, a pneumatic double-deck drum type seeding device includes a transmission shaft 4, an inner drum 2, an outer drum 14, an aeration disc 1, a seed box 5, an electromagnetic vibrator 41 and a seed guiding device. The inner drum 2 is installed on the transmission shaft 4, one end of the inner drum 2 is connected with the ventilation plate 1, the outer drum 14 is sleeved on the inner drum 2, and the outer drum 14 is connected to the The seed box 5 is matched and abutted, the outer cylinder 14 is connected with the electromagnetic exciter 41 through the connecting plate 40, and the lower end of the outer cylinder 14 is provided with a seed guiding device for receiving and guiding seeds; the inner cylinder 2 There are several ventilation grooves 3 arranged in the axial direction inside, and several air pressure holes 6 connected with the ventilation grooves 3 are arranged on the outer surface of the inner drum 2; two types of holes 7 are arranged on the outer roller 14; One end of the ventilation disc 1 is provided with a positive pressure port 8 and a negative pressure port 9 .

Positive pressure grooves and negative pressure grooves are provided inside the ventilation plate, the type holes 7 are arranged in a staggered manner, and the type holes 7 correspond to the air pressure holes 6 one by one, and the diameter of the air pressure holes 6 1mm larger than the diameter of the type hole 7, the seed introducing device comprises a seed introducing tube air distributor 30 and a seed introducing tube 33, and the inside of the seed box 5 is provided with several seed introducing plates 15, and the seed introducing plate 15 Arranged in a crossed manner, the seed guide plate 15 is arranged inside the seed box 5 in the form of bolts and nuts, the seed box 5 and the outer roller 14 are in circular arc transition contact, and the lower part of the seed box 5 is provided with an outer roller 14 arc-shaped grooves with a diameter of 2 mm, on which industrial felts used in conjunction with the outer drum 14 are pasted, and bearing seats 19 are arranged at both ends of the transmission shaft 4, and between the ventilation disc 1 and the bearing seats 19 Compression springs 18 are arranged between them.

When using this device specifically, the drive shaft 4 rotates under the drive of the motor, and then drives the inner drum 2 and the outer drum 14 to rotate. Negative pressure pipe, in addition, the seed pipe air distributor 30 is connected with the fan positive pressure pipe. During the rotation of the inner drum 2 and the outer drum 14, the seeds in the seed box 5 pass through the seed guide plate 15 inside the seed box 5 under the vibration of the electromagnetic exciter 41, so that the seeds flow uniformly downward in the seed box 5, Under the effect of negative pressure, it is adsorbed on the type hole 7 of the outer drum 14, and then transferred to the positive pressure area of the ventilation disc 1 with the outer drum 14, due to the self gravity of the seeds and the effect of the positive air flow, the seeds are released from the outer wall of the outer drum 14. Come off, fall in the seed introduction pipe 33, the upper end of the seed introduction pipe 33 is arranged as funnel shape so that accept seed; , diverge to both sides through the seed introduction pipe 33, and realize the requirements and precise positioning of different paddy row spacings.

For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and ideas described above, and all these changes and modifications should fall within the protection scope of the claims of the present invention .

Claims (10)

1. A pneumatic double-deck drum type seeding device, characterized in that: it comprises a drive shaft, an inner drum, an outer drum, a ventilation disc, a seed box, an electromagnetic vibrator and a seed guide device, and the inner drum is installed on the On the transmission shaft, one end of the inner drum is matched with the ventilation plate, the outer drum is sleeved on the inner drum, and the outer drum is in contact with the seed box, and the seed box passes through the connecting plate Connected with the electromagnetic exciter, the lower end of the outer drum is provided with a seed guiding device for receiving and guiding seeds; the inside of the inner drum is provided with a number of ventilation grooves along the axial direction, and the outer surface of the inner drum is provided with A plurality of air pressure holes penetrated by the ventilation groove; at least one type of hole may be provided on the outer drum; a positive pressure port and a negative pressure port are provided at one end of the ventilating disc. 2. A pneumatic double-deck drum type seed metering device according to claim 1, characterized in that: positive pressure grooves and negative pressure grooves are opened inside the ventilation disc. 3 . The pneumatic double-deck roller seed metering device according to claim 1 , wherein the type holes are arranged in a staggered manner, and the type holes correspond to the air pressure holes one by one. 4 . 4. A pneumatic double-deck roller seed metering device according to claim 1, characterized in that: the diameter of the air pressure hole is larger than the diameter of the molded hole. 5 . A pneumatic double-deck drum type seed metering device according to claim 1 , wherein the seed introducing device comprises a seed introducing pipe air distributor and a seed introducing pipe. 6 . 6 . The pneumatic double-deck roller seed metering device according to claim 1 , wherein a plurality of seed guide plates are arranged inside the seed box, and the seed guide plates are arranged in a non-parallel manner. 7 . 7. A pneumatic double-deck drum seed metering device according to claim 1 or 6, characterized in that: the seed guide plate is arranged inside the seed box in the form of bolts and nuts. 8. A pneumatic double-deck roller seed metering device according to claim 1 or 6, characterized in that a seed cleaning brush is provided at the contact between the lower part of the seed box and the outer roller. 9. A pneumatic double-deck roller seed metering device according to claim 1, characterized in that: bearing seats are arranged at both ends of the transmission shaft. 10 . The pneumatic double-layer drum type seed metering device according to claim 9 , characterized in that: a compression spring is arranged between the ventilation disc and the bearing seat. 11 .