CN2922421Y

CN2922421Y - Air suction-type automatic sowing device

Info

Publication number: CN2922421Y
Application number: CN 200620091566
Authority: CN
Inventors: 徐国利; 尉彦秋
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-16
Filing date: 2006-06-16
Publication date: 2007-07-18
Anticipated expiration: 2016-06-16

Abstract

The utility model relates to an improved suction drill. The suction drill comprises a housing that contains a seed container and a wind pipe, a hollow fixed shaft positioned inside the housing and communicated with a suction blower, and a seeding wheel that is provided with a chain wheel at the end, and suction holes that are fixed with the hollow fixed axle via the bearing inside the wheel boss and distributed in the radial direction of a circle. The technical characteristics of the utility model are that a dual-cavity separator is fixed at the end of the hollow fixed axle inside the seeding wheel, the axle hole end of the hollow fixed axle is communicated with the major sector negative-pressure cavity of the dual-cavity separator, and with the inner cavity of the seeding wheel at the same time. Besides, the other end of the axle hole is connected with the suction blower via a pipe joint and wind pipe, and the minor sector pressure-free cavity of the dual-cavity separator cuts off the negative pressure source of the suction holes that are arranged towards the bottom of the housing inside the seeding wheel. The improved suction drill preserves the advantages of the existing suction drill, including simple operation, convenient use, and broad applicability, effectively resolves the disadvantages of the existing suction drill, including damage to seeds and seeding failure, and considerably improves the seeding quality and prolongs the service life of the suction drill.

Description

The automatic seeding unit of air-sucking type

Technical field

The utility model relates to the dispenser that a kind of sower is used, the automatic seeding unit of particularly a kind of improved air-sucking type.When this seeding unit is used to sow the operation of various crop seeds, both can carry out single file sowing, also can on big ridge, carry out multi-row seeding, can not only be at a ridge upper seeding wheel, and can be simultaneously at the Duo Tiaolong upper seeding wheel.

Background technology

At present, along with the raising of agriculture cultivation technology and the accurately popularization of seeding technique, people are more and more higher to the requirement of agricultural seeder machinery.Existing sower kind is more, and promising large and middle tractor is supporting, and also promising small tractor is supporting, but used dispenser all forms integral structure with sower.Although the seeding accuracy of every kind of sower is all very high, yet its sowing function is very single, and the sower that promptly carries out the single file sowing can not carry out double row sowing or can not carry out multi-row seeding on big ridge; What have only can be at a ridge upper seeding wheel, and can not be simultaneously at Duo Tiaolong upper seeding wheel or the like, can not be general.In addition, kind of dish damage seed is easily scraped in existing air-sucking type sowing, and feed outlet is in a single day blocked, can influence the precision of sowing, increases the hole rate of seeding operation.The structure of two-layer cylinder air-sucking type seeding apparatus is complicated, has increased device fabrication cost and maintenance amount.Therefore, the inventor once designed the automatic seeding unit of a kind of new air-sucking type at the problems referred to above, and it cuts off the negative pressure source of suction hole by being placed on the choke slide block in the seed wheel, made seed break away from suction hole by deadweight, realized that the absorption of seed is moved.The built-in choke slide block of this seeder because of its ganoid curved surface can match with the distribute inner arm curved surface of suction hole of seed wheel, so can cut off the negative pressure source of suction hole, is finished seeding operation when bringing into use.Because the radially-arranged suction hole of seed wheel circumference loses the suction except that choke slide block partition place, those suction holes that do not cut off by the choke slide block of arranging towards housing bottom still have suction, the soil that contains sand grains on the housing bottom ground also can be sucked in the seed wheel.When the soil that contains sand grains enters between the inner arm curved surface of the curved surface of choke slide block and seed wheel in seed wheel, its curved surface that is in contact with one another with heavy wear, it is poorly sealed to make it contact-making surface, the negative pressure source that can't cut off suction hole, seed can not break away from suction hole by conducting oneself with dignity, the problem that will take place not have seed (hole) in the kind cave predetermined on the ground or squeeze broken seed (hinder and plant).Therefore the structure of this seeding unit still needs further to improve.

The utility model content

The purpose of this utility model provides the automatic seeding unit of a kind of improved air-sucking type, it is reasonable that it removes the structure distribution that keeps the existing automatic seeding unit of air-sucking type, simple to operate, easy to use, outside the advantage such as applied widely, can overcome the wound kind of its existence, the disadvantage in hole effectively, significantly improve the service life of seeding operation quality and prolongation seeding unit.

The purpose of this utility model is achieved in that this device comprises and has seed chamber, the housing of guide duct and the hollow fixed axis that is communicated with induced-draught fan that is assembled in housing, the end is fixed with sprocket wheel and utilizes the interior bearing group of wheel hub to be contained in the seed wheel of the circumference radial distribution suction hole on the hollow fixed axis, its technical essential is: the fixing encapsulation in the end two-chamber slider that utilizes hollow fixed axis in the described seed wheel, and axis hole one end of hollow fixed axis is communicated with the big fan-shaped negative pressure cavity of two-chamber slider, the inner chamber that is communicated with seed wheel simultaneously, the axis hole other end utilizes pipe joint to be connected induced-draught fan with guide duct, and the little fan-shaped nothing of two-chamber slider presses the chamber to cut off the negative pressure source of the suction hole of arranging towards housing bottom of seed wheel.

The loam cake seed porch of described housing is provided with the seed face and adjusts plate.

Because the utility model is improved on the architecture basics of the existing automatic seeding unit of air-sucking type, still adopt negative-pressure adsorption principle, utilization is assembled in the seed wheel that has suction hole on the hollow fixed axis and is encapsulated in the interior two-chamber slider that communicates with axis hole one end of hollow fixed axis of seed wheel, the absorption of realization seed is moved, press the chamber to substitute the former choke slide block that is built in the seed wheel with the little fan-shaped nothing that is encapsulated in the two-chamber slider in the seed wheel, the suction hole that cuts off seed wheel towards the housing bottom arrangement, disconnect negative pressure source, make seed break away from suction hole by deadweight, fall into predetermined kind cave exactly, so what can overcome effectively that the automatic seeding unit of existing air-sucking type exists can't cut off negative pressure source because of the choke slider wear, seed can not break away from suction hole and produce and hinder kind by deadweight, the disadvantage in hole.Because of this device only presses the chamber to substitute former built-in choke slide block with the little fan-shaped nothing of two-chamber slider, the suction hole negative pressure source that just can cut off seed wheel fully, can also prevent effectively during operation that the soil that will contain sand grains on the housing bottom ground from sucking in the seed wheel, so it is reasonable to remove the structure distribution that keeps the existing automatic seeding unit of air-sucking type, simple to operate, easy to use, applied widely, it is accurate to reach seeding quantity, injuring-free seed, hole not, keep spacing in the rows, outside the advantages such as purpose of line-spacing unanimity, can also overcome the wound kind that the automatic seeding unit of existing air-sucking type exists, the disadvantage in hole, further improve seeding operation efficient and seeding quality, prolong the service life of seeding unit, therefore help applying.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the user mode schematic diagram of a kind of concrete structure of the present utility model.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the cutaway view of Fig. 1 along the A-A line.

Fig. 4 is the cutaway view of Fig. 3 along the B-B line.

Each sequence number is described as follows among the figure: 1 driving-chain, 2, sprocket wheel, 3 seeds inlet, 4 supports, 5 press wheels, 6 trailing bars, 7 housings, 8, guide duct, 9 do not have the chamber of pressure, 24 along beam, 10 driving wheels, 11 pipe joints, 12 seed wheels, 13 loam cakes, 14 sealing shrouds, 15 two-chamber sliders, 16 hollow fixed axis, 17 seed chambers, 18 locking nuts, 19 bearings, 20 wheel hubs, 21 end caps, 22 negative pressure cavities, 23 and adjust plate.

Embodiment

Describe concrete structure of the present utility model in detail according to Fig. 1-4.The automatic seeding unit of this air-sucking type is improved on the architecture basics of the existing automatic seeding unit of air-sucking type, and it can be installed on any one sower that has induced-draught fan.This device comprises parts such as the housing 7 of the guide duct 8 that has seed chamber 17, is connected with induced-draught fan, the hollow fixed axis 16 that is assembled in housing 7, seed wheel 12 and two-chamber slider 15.During installation, the seeding that need only its housing 7 be connected sower with fastening bolt is along beam 9 and be provided with between the support 4 of trailing bar 6, press wheel 5 and get final product.The specification of its middle shell 7, model should be according to the actual crop that will sow (corn, soybean, Chinese sorghum, peanut etc.) kinds, need the form (single file sowing, multi-row seeding, unit sowing or multimachine sowing) of sowing to select.Also can determine thus the specification of seed wheel 12 and suction hole size, quantity what, to adapt to different seeding operation requirements.For satisfying the needs of all kinds of seeds of sowing, 3 places that can enter the mouth at loam cake 13 seeds of housing 7 are provided with the seed face and adjust plate 24, so that large and small according to the seed of sowing, adjust the high and low of seed face at any time.The radially-arranged suction hole of seed wheel 12 circumference can have only a row feed outlet, also the multiple row feed outlet can be arranged, and when the multiple row feed outlet, each feed outlet that is listed as same row can stagger or row's arrangement together, makes it to adapt to the spacing in the rows of sowing, the needs of line-spacing.The end of seed wheel 12 is fixed with sprocket wheel 2, and this sprocket wheel is connected with the driving wheel 10 that power source drives by driving-chain 1.Seed wheel 12 utilizes bearing 19, the sealing shroud 14 in the wheel hub 20 to be assembled on the hollow fixed axis 16.The rotation of seed wheel 12 by sprocket wheel 2 drives it and rotates on hollow fixed axis 16.In seed wheel 12, utilize the fixing encapsulation in the end two-chamber slider 15 of hollow fixed axis 16, axis hole one end of hollow fixed axis 16 is connected with the big fan-shaped negative pressure cavity 22 of two-chamber slider 15, and be communicated with the inner chamber of seed wheel 12 simultaneously, form negative pressure at the inner chamber of seed wheel 12.The axis hole other end of hollow fixed axis 16 utilizes pipe joint 11 to be connected induced-draught fan with guide duct 8, and negative pressure source is provided.Meanwhile, utilize the little fan-shaped nothing of the two-chamber slider 15 that is arranged in the seed wheel 12 to press chamber 23, substitute the built-in choke slide block of former seeding unit,, cut off the negative pressure source of these suction holes to block the suction hole of arranging towards housing 7 bottoms of seed wheel 12.When the sower operation, after induced-draught fan starts, can be by the big fan-shaped negative pressure cavity 22 of two-chamber slider 15, in the inner chamber generation negative-pressure adsorption effect of seed wheel 12.In seed wheel 12 rotating process, be distributed in the seed wheel 12 circumference suction hole that is communicated with big fan-shaped negative pressure cavity 22 two-chamber slider 15 radially by pre-provisioning request, in seed chamber 17, seed is pursued the periphery eyelet place that grain is adsorbed on seed wheel 12, and along with the periphery of seed wheel 12 together moves.When the suction hole of seed wheel 12 forwards the little fan-shaped nothing pressure chamber 23 of two-chamber slider 15 to, the negative pressure source of suction hole cuts off immediately, and the seed that is adsorbed has just lost suction, breaks away from suction hole by deadweight, fall into predetermined kind cave exactly, promptly finish the sowing task through earthing, suppression.Simultaneously also because of suction hole towards the seed wheel 12 of housing 7 bottoms arrangement, complete and negative pressure source partition in not having the sector region of pressing chamber 23, therefore just the soil that contains sand grains on the housing bottom ground can not sucked in the seed wheel yet, can prolong the service life of this seeding unit.

But the utility model unit uses, but also multimachine is also used.During sowing, be fixed in using method and operating procedure on the sower, basically with existing pneumatic seeder.

Claims

1, the automatic seeding unit of a kind of air-sucking type, comprise and have seed chamber, the housing of guide duct and the hollow fixed axis that is communicated with induced-draught fan that is assembled in housing, the end is fixed with sprocket wheel and utilizes the interior bearing group of wheel hub to be contained in the seed wheel of the circumference radial distribution suction hole on the hollow fixed axis, it is characterized in that: the fixing encapsulation in the end two-chamber slider that utilizes hollow fixed axis in the described seed wheel, and axis hole one end of hollow fixed axis is communicated with the big fan-shaped negative pressure cavity of two-chamber slider, the inner chamber that is communicated with seed wheel simultaneously, the axis hole other end utilizes pipe joint to be connected induced-draught fan with guide duct, and the little fan-shaped nothing of two-chamber slider presses the chamber to cut off the negative pressure source of the suction hole of arranging towards housing bottom of seed wheel.

2, the automatic seeding unit of air-sucking type according to claim 1 is characterized in that: the loam cake seed porch of described housing is provided with the seed face and adjusts plate.