CN106385885A - Negative pressure system for air-suction metering device - Google Patents
Negative pressure system for air-suction metering device Download PDFInfo
- Publication number
- CN106385885A CN106385885A CN201610822044.1A CN201610822044A CN106385885A CN 106385885 A CN106385885 A CN 106385885A CN 201610822044 A CN201610822044 A CN 201610822044A CN 106385885 A CN106385885 A CN 106385885A
- Authority
- CN
- China
- Prior art keywords
- air
- negative pressure
- tube
- inner tube
- pressure system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
Abstract
The invention discloses a negative pressure system for an air-suction metering device. The negative pressure system comprises a Venturi tube which is composed of an inner tube and an outer tube; the inner tube and the outer tube are detachably and fixedly connected in a sleeving manner; one end of the inner tube is an engine silencer connection end with an air inlet while the other end is a necking end; the outer tube has a tail gas discharge end with an air outlet; the outer peripheral surface of the outer tube is provided with branch tubes forming negative pressure interfaces; and the inner tube is fixed on the silencer of an engine. Negative pressure around the necking end of the inner tube is formed due to the Bernoulli Effect generated when tail gas flowing at a high speed passes through the diameter-variable part of the inner tube; and then the negative pressure is transmitted to the air-suction metering device of a seeder via an air outlet pipe of the air-suction metering device in virtue of the branch tubes of the outer tube and a flexible tube connected with the branch tubes, so a desired degree of vacuum in suction of seeds is provided. The negative pressure system provided by the invention is simple in structure and reduced in cost, has no extra requirements on the lifting force of a tractor and the form of a hydraulic system and is also reduced in maintenance cost.
Description
Technical field
The invention belongs to technical field of seeders is and in particular to a kind of air-suction seeding unit for seeder provides negative pressure
System.
Background technology
Aspiration type seeding mode is to realize the optimal scheme of quick precision drilling, is the trend of seeder development.Logical
Often, the negative pressure required for air-suction seeding unit, is provided by a negative pressure fan being arranged on seeder, required for fan work
Power, then provided by tractor PTO shaft or tractor hydraulic system drive extra hydraulic motor to provide.This fan
There is provided the mode of negative pressure, structure is relative complex, relatively costly, the lifting force to tractor and the form of hydraulic system have extra wanting
Ask, maintenance cost is also higher.
Content of the invention
The technical problem to be solved is：A kind of air-suction seeding unit negative pressure system, this offer negative pressure are provided
Mode, structure is simple, low cost, and the lifting force to tractor and the form of hydraulic system do not have extra demand, maintenance
Cost is relatively low.
For solving above-mentioned technical problem, the technical scheme is that：Air-suction seeding unit negative pressure system, including：Civilian mound
In manage, described Venturi tube has air inlet, air vent and negative port, and described air inlet is connected with motor silencer, institute
State negative port to connect with described air-suction seeding unit.
Further, described Venturi tube includes inner and outer tubes that are sheathed and being detachably fixed connection, said inner tube
One end is the motor silencer connection end forming described air inlet, and the other end is necking down end, and it is described that described outer tube has formation
The exhaust emissions end of air vent, the outer peripheral face of described outer tube is provided with the arm forming described negative port.
Further, said inner tube is connected by securing member with described outer tube.
Further, it is connected with flexible pipe between described arm and described air-suction seeding unit.
Further, the motor silencer connection end of said inner tube and the air vent of described motor silencer pass through card
Hoop connects.
After employing technique scheme, the invention has the beneficial effects as follows：
1) adopt venturi tube structure, and by Venturi tube be connected to the deafener of electromotor and air-suction seeding unit it
Between, the Bernoulli effect that produced when through the reducing of Venturi tube using swiftly flowing motor exhaust, produce negative pressure, from
And realize aspiration type seeding.Present invention eliminates the negative pressure system of conventional fan formula, the lifting force to tractor and hydraulic system
Form there is no an extra demand, the mode of this offer negative pressure, structure is simple, can reduce manufacturing cost, also can drop simultaneously
Low maintenance costs.After engine start, air negative pressure just accordingly produces it is not necessary to operation bidirectional, decreases driver's
Operating procedure, improves the work efficiency of driver.And so that the tail gas of electromotor is effectively utilized.
2) Venturi tube includes inner and outer tubes that are sheathed and being detachably fixed connection, can be according to electromotor different displacements
And newness degree, select the Venturi tube inner tube of different latus rectums, to reach the negative pressure value required for sowing, and reduce to starting
The impact of machine exhaust back pressure is so as to the impact that electromotor is produced can be ignored.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the longitudinal sectional view that in Fig. 1, Venturi tube is amplified；
In figure, 1- outer tube, 11- arm, 2- inner tube, 3- securing member, 4 clips, 5- discharge pipe, 6- flexible pipe, 7- aspirated-air type is arranged
Plant device.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As Fig. 1 and Fig. 2 is jointly shown, a kind of air-suction seeding unit negative pressure system, Venturi tube includes inner tube 2 and outer tube 1,
Inner tube 2 and outer tube 1 are sheathed and be detachably fixed connection, are detachably fixed to connect and are realized in：Tapping processing on outer tube 1
There is screwed hole, certainly, because the tube wall of outer tube 1 is very thin, in order to strengthen the intensity of outer tube 1, can also on the outer peripheral face of outer tube 1
It is arranged with sleeve pipe, tapping simultaneously on sleeve pipe and outer tube 1 is threaded hole, using bolt or other conventional securing member rotations
After entering screwed hole, it is scheduled on the outer peripheral face of inner tube 2, be used for fixing inner tube 2.It is of course also possible to be detachably fixed using other
Mode.
One end of inner tube 2 is the motor silencer connection end forming air inlet, and the other end is necking down end, and outer tube 1 has
Form the exhaust emissions end of air vent.The outer peripheral face of outer tube 1 is provided with the arm 11 forming negative port.Arm 11 and aspirated-air type
It is connected with flexible pipe 6 between discharge pipe on feed mechanism for seed 7, certainly, in order that arm 11 is preferably linked together with flexible pipe 6, can
To add combined cover on the port of arm 11.
The motor silencer connection end of inner tube 2 is connected by clip 4 with the air vent of motor silencer, by inner tube 2
It is fixed on motor silencer.Imitated using the Bernoulli Jacob that swiftly flowing motor exhaust produces when through inner tube 2 reducing
Should, cause to produce negative pressure around inner tube 2 smaller diameter end, by arm 11 and the coupled flexible pipe 6 of outer tube 1, will bear
Pressure is delivered on the air-suction seeding unit 7 of seeder by the discharge pipe 5 being connected with flexible pipe 6, provides it to draw seed when institute
The vacuum needing.
Inner tube 2 is replaceable.Different brands and the tractor of horsepower section, the discharge capacity of the electromotor being assembled is different, new and old journey
Degree is also different, and the discharge capacity ultimately causing electromotor is different；And air-suction seeding unit needs the vacuum of more than certain numerical value
Can guarantee that precision drilling.But, if the latus rectum of inner tube 2 is too small, the exhaust back pressure of electromotor can be caused to increase, affect electromotor
Overall performance.In order to ensure to meet precision drilling, do not cause extra exhaust back pressure, Ke Yigen simultaneously and to electromotor
According to electromotor different displacements, and the newness degree of electromotor, provide the inner tube 2 of different latus rectums to be selected for different electromotors
Select.
The quantity of arm 11 on outer tube 1 can be changed, to adapt to the air-suction seeding unit of varying number.
The operation principle of above-described embodiment is as follows：During seeder work, air enters air-suction seeding unit through blast pipe
7, and the discharge pipe 5 of air-suction seeding unit 7 is then connected with the arm 11 on the outer tube 1 of Venturi tube by flexible pipe 6, high velocity stream
Dynamic motor exhaust enters the inner tube 2 of connected Venturi tube by deafener, produces when through inner tube 2 reducing
Bernoulli effect, causes to produce negative pressure around inner tube 2 necking down end, by flexible pipe 6, negative pressure is delivered to the true of air-suction seeding unit 7
Empty room.During discharge plate revolution, under vacuum chamber suction function, absorption rotates on discharge plate and with discharge plate seed.When
After seed produces vacuum chamber, it is not subjected to negative pressure, just pass through grain conductor by the presence of deadweight and rotator inertia, drop to sowing
In the kind ditch that the trench digging double-arc spline carrying on unit is outputed in soil.
To sum up, the main inventive point of the present invention is, can produce the principle of negative pressure at reducing using Venturi tube, by it
Air inlet is connected with motor silencer, and its negative port is connected with air-suction seeding unit 7, makes full use of the tail gas of electromotor
Discharge, realizes seeding operation.
Although the foregoing describing the specific embodiment of the present invention, it should be appreciated by those skilled in the art, retouched
The embodiment stated is only a part of embodiment of the present invention, rather than whole embodiments, and these are merely illustrative, this
The protection domain of invention is to be defined by the appended claims.Those skilled in the art is in the principle without departing substantially from the present invention and reality
On the premise of matter, not under any performing creative labour, various changes or modifications can be made to these embodiments,
But these changes and modification each fall within protection scope of the present invention.
Claims (5)
1. air-suction seeding unit negative pressure system is it is characterised in that include：
Venturi tube, described Venturi tube has air inlet, air vent and negative port, described air inlet and motor silencer
Connect, described negative port is connected with described air-suction seeding unit.
2. air-suction seeding unit negative pressure system as claimed in claim 1 it is characterised in that described Venturi tube include sheathed simultaneously
It is detachably fixed the inner and outer tubes of connection, one end of said inner tube is that the motor silencer forming described air inlet connects
End, the other end is necking down end, and described outer tube has the exhaust emissions end forming described air vent, the outer peripheral face of described outer tube sets
There is the arm forming described negative port.
3. air-suction seeding unit negative pressure system as claimed in claim 2 is it is characterised in that said inner tube is passed through with described outer tube
Securing member is connected.
4. air-suction seeding unit negative pressure system as claimed in claim 2 is it is characterised in that described arm is arranged with described aspirated-air type
Plant and be connected with flexible pipe between device.
5. air-suction seeding unit negative pressure system as claimed in claim 2 is it is characterised in that the motor silencer of said inner tube
The air vent of connection end and described motor silencer passes through clamp connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822044.1A CN106385885A (en) | 2016-09-13 | 2016-09-13 | Negative pressure system for air-suction metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822044.1A CN106385885A (en) | 2016-09-13 | 2016-09-13 | Negative pressure system for air-suction metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106385885A true CN106385885A (en) | 2017-02-15 |
Family
ID=57999775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610822044.1A Pending CN106385885A (en) | 2016-09-13 | 2016-09-13 | Negative pressure system for air-suction metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106385885A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108584033A (en) * | 2018-04-28 | 2018-09-28 | 重庆市保役农业开发有限责任公司 | Seed packaging device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149090Y (en) * | 1992-07-17 | 1993-12-15 | 程秀焕 | Negative attracting device for motor exhaust pipe |
| CN1582611A (en) * | 2004-06-01 | 2005-02-23 | 浙江大学 | Method and apparatus for pneumatic precisive seeding vegetables and flowers |
| CN2717189Y (en) * | 2004-06-01 | 2005-08-17 | 浙江大学 | Seedling flower nursery precision planter |
| EP2168416A2 (en) * | 2008-09-26 | 2010-03-31 | Horsch Maschinen GmbH | Single grain metering device |
| CN104996040A (en) * | 2015-08-14 | 2015-10-28 | 盐城工学院 | Novel anti-blocking device applied to protective cropping system |
-
2016
- 2016-09-13 CN CN201610822044.1A patent/CN106385885A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149090Y (en) * | 1992-07-17 | 1993-12-15 | 程秀焕 | Negative attracting device for motor exhaust pipe |
| CN1582611A (en) * | 2004-06-01 | 2005-02-23 | 浙江大学 | Method and apparatus for pneumatic precisive seeding vegetables and flowers |
| CN2717189Y (en) * | 2004-06-01 | 2005-08-17 | 浙江大学 | Seedling flower nursery precision planter |
| EP2168416A2 (en) * | 2008-09-26 | 2010-03-31 | Horsch Maschinen GmbH | Single grain metering device |
| CN104996040A (en) * | 2015-08-14 | 2015-10-28 | 盐城工学院 | Novel anti-blocking device applied to protective cropping system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108584033A (en) * | 2018-04-28 | 2018-09-28 | 重庆市保役农业开发有限责任公司 | Seed packaging device |
| CN108584033B (en) * | 2018-04-28 | 2020-05-05 | 重庆市保役农业开发有限责任公司 | Seed packing plant |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |