CN2796331Y

CN2796331Y - Drum pneumatic vegetable seed planter

Info

Publication number: CN2796331Y
Application number: CN 200520023056
Authority: CN
Inventors: 李志伟; 郑丁科; 牛菊菊; 陈佳琦
Original assignee: South China Agricultural University
Current assignee: South China Agricultural University
Priority date: 2005-06-28
Filing date: 2005-06-28
Publication date: 2006-07-19
Anticipated expiration: 2015-06-28

Abstract

The drum pneumatic type vegetable seeding planter of the utility model relates to an industrial seedling growing machine for vegetables, which comprises a rotating shaft, a drum, and a gas exchange device, wherein the rotating shaft is supported by a bearing with a seat; the drum is fixed on the rotating shaft; a plurality of seed discharge and suction holes are arranged on the drum; the gas exchange device comprises a rotating gas exchange disk which is fixed on the end part of the drum, and a fixing gas exchange disk which is hollowly sheathed on the rotating shaft; a negative-pressure cavity chamber and a positive-pressure cavity chamber are arranged on the fixing gas exchange disk; at least four roots of connecting gas pipes which can be communicated with the negative-pressure cavity chamber and the positive-pressure cavity chamber are uniformly distributed on the rotating gas exchange disk. Because the gas exchange device comprises a rotating gas exchange disk which is fixed on the end part of the drum, and a fixing gas exchange disk which is hollowly sheathed on the rotating shaft and the conversion of positive pressure and the negative pressure is realized by the relative rotation of the rotating gas exchange disk to the fixing gas exchange disk for avoiding using an electromagnetic valve, the utility model has the advantages and the positive effects of simple structure, low maintenance cost, high work efficiency, and convenient use, and simultaneously, has the advantages and the positive effects that gas consumption is greatly reduced, and precious energy is saved.

Description

Cylinder pneumatic type vegetable sower

Technical field

The utility model relates to the vegetable works seedling machinery, specifically is meant the cylinder pneumatic type vegetable sower in the factorial seedling growth pipelining.

Background technology

At present, the vegetable worksization sower in the pipelining of growing seedlings comprises mechanical type and pneumatic type two kinds, and mechanical precision is not high, less use; And pneumatic type is not only not strict to the shape need of seed, and seeding accuracy can reach every cave 1-2 grain, is actively promoted.The pneumatic type sower is the conversion by positive and negative air-pressure, realizes absorbed seed and seed is sent into the seedling dish.Pneumatic type sower commonly used divide the pin hole pneumatic type again with the cylinder pneumatic type.Pin hole pneumatic type sower has ineffective shortcoming, and the operating efficiency of cylinder pneumatic type sower can reach 2-3 times of pin, but owing to machining accuracy height, complex structure, so that homemade equipment is unreliable, and import equipment is expensive especially, incompatible with China agricultural products price level, therefore be difficult to be promoted application.Existing cylinder pneumatic type vegetable sower structure comprises axle, is installed in cylinder and air interchanger on the axle, wherein the switching of the positive negative pressure in the air interchanger is finished by magnetic valve, and air channel is arranged on the axle, the machining accuracy that this structural requirement is very high, make the cost height, the easy damage of magnetic valve also is a reason that improves use cost, the vegetable-seed planter air consumption of this structure that main is is very big, need powerful aerostatic press, not only increase cost, also cause the waste of the energy simultaneously.

The utility model content

The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and a kind of simple in structure, cylinder pneumatic type vegetable sower that cost is low and energy-conservation is provided.

For achieving the above object, the utility model adopts following technical scheme:

The utility model cylinder pneumatic type vegetable sower, comprise the rotating shaft supported by rolling bearing units, be fixed on cylinder and air interchanger in the rotating shaft, its intermediate roll is provided with the plurality of rows suction hole, wherein said air interchanger comprises rotation ventilation dish and the empty fixedly ventilation dish that is enclosed within the rotating shaft that is fixed in the cylinder end, wherein fixedly the ventilation dish is provided with vacuum chamber and malleation chamber, rotates to be evenly equipped with at least 4 on the ventilation dish and can be connected tracheae with described vacuum chamber or malleation chamber are connected.

Be provided with an air channel corresponding to each row's suction hole position on the wherein said cylinder, at least 4 connect tracheae and are communicated with corresponding air channel respectively.

Wherein said suction hole is a shoulder hole, and wherein the less one side in aperture is positioned at the cylinder outside.

Wherein also comprise by bearing I being supported on installing plate in the rotating shaft, described fixedly ventilation dish is supported in the rotating shaft by bearing I I, fixedly is fixed with some between the ventilation dish at installing plate and connects dull and stereotyped.

The cross section of wherein said vacuum chamber is curved, and corresponding arc angle is 250 °～350 °; Preferred arc angle is 270 °.

Be set with the compression spring in the rotating shaft between wherein said bearing I and the bearing I I.

The advantage and the good effect of cylinder pneumatic type vegetable sower of the present utility model are: because its air interchanger comprises rotation ventilation dish and the empty fixedly ventilation dish that is enclosed within the rotating shaft that is fixed in the cylinder end, the conversion of positive and negative pressure is by rotating the ventilation dish with respect to the rotation realization of fixing ventilation dish, avoid using magnetic valve, not only simple in structure, and reduction maintenance cost, increase work efficiency, easy to use; Simultaneously reduce air consumption significantly, saved the valuable energy.

Description of drawings

Fig. 1 is the sectional structure chart of the utility model cylinder pneumatic type vegetable sower;

Fig. 2 is the vertical view of sower shown in Figure 1;

Fig. 3 is the structure chart of the fixedly ventilation dish in the utility model cylinder pneumatic type vegetable sower;

Fig. 4 is along the cutaway view of A-A among Fig. 3;

Fig. 5 is the structure chart of the rotation ventilation dish in the utility model cylinder pneumatic type vegetable sower;

Fig. 6 is along the cutaway view of B-B among Fig. 5;

Fig. 7 is a C part amplification assumption diagram among Fig. 1;

Fig. 8 is the fundamental diagram in the utility model cylinder pneumatic type vegetable sower.

Embodiment

Below in conjunction with accompanying drawing, further describe the embodiment of the utility model cylinder pneumatic type vegetable sower.

Referring to Fig. 1 and Fig. 2.Cylinder pneumatic type vegetable sower of the present utility model comprises the rotating shaft 2 supported by rolling bearing units 1, is fixed on cylinder 16 and air interchanger in the rotating shaft 2, is provided with plurality of rows suction hole 24 on cylinder 16.Be provided with an air channel 15 corresponding to each row's suction hole 24 position on its intermediate roll 16.

Air interchanger comprises fixedly ventilation dish 11, rotates ventilation dish 14 and is connected tracheae 22, fixedly ventilation dish 11 is supported in the rotating shaft 2 by bearing I I25, it does not rotate with rotating shaft 2, fixedly ventilation dish 11 is provided with vacuum chamber 20 and malleation chamber 21, in vacuum chamber 20, be connected with exhaust tube 7 by snap joint 10, the other end of exhaust tube 7 is connected with extraction sector, is connected with snorkel 26 by snap joint in the malleation chamber 21, and the other end of snorkel 26 is connected with the mechanism of supplying gas.

Rotate ventilation dish 14 and be fixed on the end of cylinder 16, and fixedly connected with rotating shaft 2 by flat key 13 by screw, can be along with rotating shaft 2 rotations; The quantity that connects tracheae 22 is identical with the quantity of air channel 15, evenly is arranged on the rotation ventilation dish 14, and can docks with vacuum chamber 20 or the malleation chamber 21 on the fixing ventilation dish 11.In the utility model, air channel 15 is arranged on the cylinder 16, rather than resembles and be arranged on rotating shaft 2 traditional cylinder pneumatic type vegetable sower, simplify the structure greatly and processing technology, significantly reduce cost.

In rotating shaft 2, also be supported with installing plate 5 by bearing I 23, fixedly be fixed with some between the ventilation dish 11 at installing plate 5 and connect dull and stereotyped 8, be set with compression spring 9 in the rotating shaft 2 between bearing I 23 and the bearing I I25, the effect of compression spring 9 is to make fixedly, and ventilation dish 11 is connected closely minimizing gas leakage with rotation ventilation dish 14.

Referring to Fig. 3 and Fig. 4.In the utility model, fixedly the cross section of the vacuum chamber 20 on the ventilation dish 11 is curved, and corresponding arc angle is 270 °, and according to the diameter of cylinder 16, arc angle all is feasible in 250 °～350 ° scopes.Malleation chamber 21 be positioned at fixing ventilation dish 11 below, the minimum point of the vacuum chamber 20 of arc also is higher than malleation chamber 21.

Referring to Fig. 5 and Fig. 6.In the utility model, rotate ventilation dish 14 and be provided with four connection tracheaes 22, correspondingly, the air channel 15 that is arranged on the cylinder 16 also is four.Can be as the case may be in the enforcement, it all is feasible that 6,8,12,20 air channels 15 are set.

Referring to Fig. 7.In the utility model, suction hole 24 is shoulder holes, promptly is made up of macropore and aperture, wherein greatly also is positioned at cylinder 16 inner faces, and aperture is positioned at cylinder 16 outsides.The hole of this structure can effectively prevent the seed blockage problem.

Referring to Fig. 8.When cylinder pneumatic type vegetable sower of the present utility model was worked, rotating shaft 2 was rotated, and cylinder 16 and rotation ventilation dish 14 rotate thereupon; Extraction sector by exhaust tube 7 fixedly the air in the vacuum chamber 20 of ventilation dish 11 take away and produce negative pressure, when certain root connection tracheae 22 is communicated with vacuum chamber 20, also produce negative pressure, also produce negative pressure with the air channel 15 that is connected tracheae 22 connections thereupon, make the suction hole 24 inside and outside Negative Pressure Difference that produce that are arranged on the air channel 15, along with being rotated further of cylinder 16, when these suction hole 24 processes supplied to plant device 27, seed 28 had been attracted under the effect of Negative Pressure Difference on the suction hole 24 with cylinder 16 rotations; When this connection tracheae 22 turns to the below of circular motion, promptly be communicated with the fixing malleation chamber 21 of ventilation dish 11, the negative pressure that reach in the air channel 15 that is communicated with it in this connection tracheae 22 change malleation immediately into, inhale seed 28 and fall in the hole, cave of seedling dish 29 in the effect of deadweight and malleation.

In the cylinder pneumatic type vegetable sower of the present utility model, the conversion of positive and negative pressure is by rotating ventilation dish 14 with respect to the rotation realization of fixing ventilation dish 11, avoiding using magnetic valve, not only simple in structure, and the reduction maintenance cost, increase work efficiency, easy to use; Simultaneously reduce air consumption significantly, saved the valuable energy.

More than be preferred forms of the present utility model, according to the disclosed content of the utility model, some identical, replacement schemes that those of ordinary skill in the art can expect apparently all should fall into the scope of this bright protection.

Claims

1. cylinder pneumatic type vegetable sower, comprise the rotating shaft of supporting by rolling bearing units (1) (2), be fixed on cylinder (16) and air interchanger in the rotating shaft (2), its intermediate roll (16) is provided with plurality of rows suction hole (24), it is characterized in that described air interchanger comprises that the rotation ventilation dish (14) that is fixed in cylinder (16) end and sky are enclosed within the fixedly ventilation dish (11) in the rotating shaft (2), wherein fixedly ventilation dish (11) is provided with vacuum chamber (20) and malleation chamber (21), rotates to be evenly equipped with at least 4 on the ventilation dish (14) and can be connected tracheae (22) with described vacuum chamber (20) or malleation chamber (21) are connected.

2. cylinder pneumatic type vegetable sower according to claim 1, it is characterized in that described cylinder (16) upward is provided with an air channel (15) corresponding to each row's suction hole (24) position, at least 4 connect tracheaes (22) and are communicated with corresponding air channel (15) respectively.

3. cylinder pneumatic type vegetable sower according to claim 1 is characterized in that described suction hole (24) is a shoulder hole, and wherein the less one side in aperture is positioned at cylinder (16) outside.

4. cylinder pneumatic type vegetable sower according to claim 1, it is characterized in that also comprising by bearing I (23) and be supported on installing plate (5) in the rotating shaft (2), described fixedly ventilation dish (11) is supported in the rotating shaft (2) by bearing I I (25), fixedly is fixed with some between the ventilation dish (11) at installing plate (5) and connects dull and stereotyped (8).

5. cylinder pneumatic type vegetable sower according to claim 1 is characterized in that the cross section of described vacuum chamber (20) is curved, and corresponding arc angle is 250 °～350 °.

6. cylinder pneumatic type vegetable sower according to claim 4 is characterized in that being set with in the rotating shaft (2) between described bearing I (23) and the bearing I I (25) compression spring (9).

7. cylinder pneumatic type vegetable sower according to claim 5 is characterized in that described arc angle is 270 °.