CN2512231Y - One-way valve for tree trunk injector - Google Patents
One-way valve for tree trunk injector Download PDFInfo
- Publication number
- CN2512231Y CN2512231Y CN 01217005 CN01217005U CN2512231Y CN 2512231 Y CN2512231 Y CN 2512231Y CN 01217005 CN01217005 CN 01217005 CN 01217005 U CN01217005 U CN 01217005U CN 2512231 Y CN2512231 Y CN 2512231Y
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- check valve
- spring
- injection machine
- 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.)
- Expired - Fee Related
Links
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- Check Valves (AREA)
Abstract
The utility model relates to a one-way valve for tree trunk injector. A valve core is a column made of elastic material; a head face of the valve core is pressed on a flat shape valve seat by a spring. A sealed head face of a valve assembly is made an inner concave; the periphery forms a sealed zone, thereby improving air tightness and work reliability of the valve. The acting force of the spring is transmitted to the valve core through a copper gasket, thereby improving the life-span of the valve core.
Description
The utility model relates to the check valve on a kind of trunk injection machine soup pipeline.
The soup of trunk injection machine is the xylem that injects trunk under certain pressure by syringe needle.The pressure of soup is that reciprocating pump produces, and several check valves are arranged on the soup pipeline, and the sealing of check valve is very big to the injection efficiency influence.Made spool with steel ball, because the mistake of steel ball circle itself, sealing property is bad in the past.In practical operation, sneak into tiny foreign material in the soup unavoidably, this tiny foreign material can cause also that as filling up at valve port or being bonded on the spool check valve lost efficacy.The injection soup has stronger corrosivity, common metal spool and valve seat corrosion-vulnerable and lost efficacy, and service life is very short.More than some reasons make the injector fault frequent, injection amount control is inaccurate, influences control efficiency.
The purpose of this utility model provides a kind of good seal, and reliable operation, life-span are than farm labourer's trunk injection machine check valve.
The purpose of this utility model is achieved in that the sealing surface of valve seat is the plane, seals on valve seat planes by spring force pressure with an end face of cylindrical valve spool.Spool is made with the rubber-like nonmetallic materials of resistance corrosion, as corrosion resistant rubber etc.Seal spool end face middle part indent, making sealing surface is a narrower annulus, has improved the sealing of valve.The elastic deformability of spool is stronger, even sealing surface has tiny foreign material, also can reach sealing, has improved the reliability of check valve work.
Fig. 1 is a structure chart of the present utility model.
1. medicine outlet holes, 2. glands, 3. springs, 4. copper packings, 5. spools, 6. seal spool endless belt, 7. sealing surface of seats, 8. valve seats, 9. medicine feeding holes among the figure
Among Fig. 1, spool 5 is compressed on the sealing surface of valve seat 8 by spring force, and indent is made in the lower surface of spool 5
Shape, periphery forms the seal band 6 that protrudes.Medicine feeding hole 9 is positioned at the seal band center, and the aperture is much smaller than the diameter of seal band 6.Spool 5 is made by the elasticity nonmetallic materials, and the strain of its lower end seal band can improve the reliability of its sealing and work.2 pairs of springs 3 of gland apply certain pressure, and there is medicine outlet hole 1 in its central authorities.After the pressure at medicine feeding hole 9 places surpasses the pressure certain value at medicine outlet hole 1 place, the pressure that soup acts on the spool lower end overcomes the buffer brake of spring 3 and spool 5 is moved upward, soup enters from medicine feeding hole 9, by the top of the inflow of the gap around spool spool 5, is discharged by medicine outlet hole 1 then.When medicine feeding hole 9 places did not have pressure, spool 5 fell rapidly under the effect of spring 3, and valve cuts out.The effect of copper packing 4 is that the active force of 3 pairs of spools 5 of spring is scatter, and prolongs the service life of spool 5.The material of spool 5 should have drug resistance preferably, is difficult for being corroded by soup.
Claims (4)
1. trunk injection machine check valve, it is characterized in that: spool is the cylinder that elastomeric material is made, by an end face as sealing surface.
2. trunk injection machine check valve according to claim 1, it is characterized in that: the seal face of spool is made concave shaped, and its projection forms a seal band.
3. trunk injection machine check valve according to claim 1 and 2 is characterized in that: the sealing surface of valve seat is a plane, and medicine feeding hole is at the center of seal band, and the aperture is less than the diameter of seal band.
4. trunk injection machine check valve according to claim 1 is characterized in that: a packing ring is arranged between spool and spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01217005 CN2512231Y (en) | 2001-01-03 | 2001-01-03 | One-way valve for tree trunk injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01217005 CN2512231Y (en) | 2001-01-03 | 2001-01-03 | One-way valve for tree trunk injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512231Y true CN2512231Y (en) | 2002-09-25 |
Family
ID=33635313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01217005 Expired - Fee Related CN2512231Y (en) | 2001-01-03 | 2001-01-03 | One-way valve for tree trunk injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512231Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449188C (en) * | 2006-11-22 | 2009-01-07 | 广州聚能生物科技有限公司 | Plane type one-way valve |
-
2001
- 2001-01-03 CN CN 01217005 patent/CN2512231Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449188C (en) * | 2006-11-22 | 2009-01-07 | 广州聚能生物科技有限公司 | Plane type one-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |