CN106729796B - Intermittent soil steam sterilizing needle - Google Patents
Intermittent soil steam sterilizing needle Download PDFInfo
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- CN106729796B CN106729796B CN201710159515.XA CN201710159515A CN106729796B CN 106729796 B CN106729796 B CN 106729796B CN 201710159515 A CN201710159515 A CN 201710159515A CN 106729796 B CN106729796 B CN 106729796B
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- needle tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
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- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Catching Or Destruction (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The technology provides an intermittent soil steam disinfection needle, which has the characteristics of high strength, good sealing performance and easy replacement, and can realize intermittent steam outlet, namely, the needle outputs steam when inserted into soil to sterilize and disinfect the soil; the needle is automatically closed when being pulled out of the soil, so that the waste of steam is avoided. It comprises a sleeve and a needle tube; the upper part of the needle tube with the steam inlet extends into the sleeve, and the lower part of the needle tube with the steam outlet extends out of the sleeve; the needle tube can be arranged in the sleeve in a way of moving up and down along the axial direction; when the needle tube moves to the upper part relative to the sleeve, the inner space of the upper part of the sleeve is communicated with the inner space of the needle tube through the steam inlet; when the needle tube is moved to the lower part relative to the hub, the inner space of the upper part of the hub is not communicated with the inner space of the needle tube.
Description
Technical Field
The technology relates to a soil steam disinfection needle, in particular to an intermittent soil steam disinfection needle which outputs steam when the needle is inserted into soil to sterilize and disinfect the soil; when the needle is pulled out of the soil, the needle is automatically closed, and the waste of steam is avoided.
Background
Soil disinfection can effectively reduce serious economic loss caused by soil-borne diseases and insect pests, and becomes an important measure for improving the ecological environment of crops, increasing the agricultural output value and promoting the development of agricultural economy. The soil disinfection modes are numerous, and compared with other disinfection modes, the steam disinfection mode has the advantages of environmental protection, no pollution, low cost, less investment, uniform and thorough disinfection and the like, and gradually replaces other disinfection modes to become the mainstream of soil disinfection. However, no special needle for sterilizing soil steam is available at present, and the development of the soil steam sterilization technology is restricted, so that the needle special for sterilizing the soil steam, which has high strength, good sealing property and good anti-blocking performance, is urgently needed to be developed.
Disclosure of Invention
The technical purpose of the technology is to provide an intermittent soil steam disinfection needle which has the characteristics of high strength, good sealing performance and easy replacement, and mainly can realize intermittent steam outlet, namely, steam is output when the needle is inserted into soil to sterilize and disinfect the soil; when the needle is pulled out of the soil, the needle is automatically closed, and the waste of steam is avoided.
The intermittent soil steam disinfection needle of the technology comprises a sleeve and a needle tube; the upper part of the needle tube with the steam inlet extends into the sleeve, and the lower part of the needle tube with the steam outlet extends out of the sleeve; the needle tube can be arranged in the sleeve in a way of moving up and down along the axial direction; when the needle tube moves to the upper part relative to the sleeve, the inner space of the upper part of the sleeve is communicated with the inner space of the needle tube through the steam inlet; when the needle tube moves to the lower part relative to the hub, the inner space of the upper part of the hub is not communicated with the inner space of the needle tube.
The beneficial effect of this technique: when the steam pipe is installed, the sleeve is communicated with the steam pipe, and steam can enter the inner space at the upper part of the sleeve through the steam pipe. Before the needle tube is inserted into soil (in a normal state), the needle tube is positioned at the lower part relative to the sleeve, the inner space at the upper part of the sleeve is not communicated with the inner space of the needle tube, and steam cannot enter the needle tube, namely, the steam cannot be discharged through the needle tube; when the needle tube is inserted into soil, the needle tube moves to the lower part relative to the sleeve, the inner space at the upper part of the sleeve is communicated with the inner space of the needle tube through the steam inlet, steam in the steam pipeline enters the needle tube through the inner space at the upper part of the sleeve and the steam inlet, and if the steam is discharged into the soil through the steam outlet, the sterilization and disinfection of the soil are completed. The soil steam disinfection needle realizes intermittent air supply, and when the needle is inserted into soil, the needle tube moves upwards to output steam to sterilize and disinfect the soil; when the needle is pulled out of the soil, the needle tube moves downwards, the inner space at the upper part of the sleeve is not communicated with the inner space of the needle tube, and steam cannot be discharged through the needle tube, so that the waste of the steam is avoided.
The intermittent soil steam disinfection needle also comprises an end cover with the diameter larger than that of the needle tube; the inner wall of the sleeve is provided with a ring platform; the upper part of the needle tube with a steam inlet penetrates through the annular table and extends into the sleeve; the upper end of the needle tube is sealed by an end cover; an elastic element which enables the needle tube to move to the lower part relative to the annular table along the axial direction under the normal state is arranged between the sleeve and the needle tube; when the needle tube moves to the lower part relative to the annular table, the periphery of the end cover contacts with the upper end face of the annular table, and the inner space of the needle tube is not communicated with the inner space of the upper part of the sleeve; when the needle tube moves to the upper part relative to the annular table by overcoming the acting force of the elastic element, the end cover is separated from the upper end face of the annular table, the steam inlet is positioned above the annular table, and the inner space at the upper part of the sleeve is communicated with the inner space of the needle tube through the steam inlet.
The needle tube can be reliably positioned at the lower part in a normal state through the elastic element, steam leakage is avoided, and meanwhile, the periphery of the end cover is in contact with the upper end face of the annular table, so that sealing is reliable. The sleeve is internally provided with the ring platform, so that the structure is firmer, the strength is high, and the service life is prolonged.
The intermittent soil steam disinfection needle is characterized in that an inner limiting step is arranged on the inner wall of the sleeve below the annular table, and an outer limiting step axially opposite to the inner limiting step is arranged on the outer wall of the needle tube; when the outer limit step and the inner limit step are in axial contact, the highest limit position of the needle tube moving upwards relative to the ring platform is formed. When the needle tube moves upwards, the needle tube cannot move upwards continuously until the outer limiting step is contacted with the inner limiting step, the inner limiting step limits the upper limit position of the needle tube, and the phenomenon that the needle tube moves upwards too much to damage an elastic element, an end cover and the like in the process of inserting the needle tube into soil is avoided.
The intermittent soil steam sterilization needle is characterized in that the outer wall of the needle tube is provided with an elastic element supporting step which is arranged at the upper part of the outer limiting step; the elastic element supporting step is positioned below the ring platform and axially opposite to the lower end surface of the ring platform; the elastic element is positioned between the elastic element supporting step and the lower end face of the annular table; a first sealing ring is arranged between the inner wall of the ring table and the outer wall of the needle tube corresponding to the inner wall of the ring table; the inner wall of the sleeve between the lower part of the annular table and the inner limiting step is the inner wall of the middle part of the sleeve, the outer wall of the needle tube between the elastic element supporting step and the outer limiting step is the outer wall of the middle part of the needle tube, and a second sealing ring is arranged between the inner wall of the middle part of the sleeve and the outer wall of the middle part of the needle tube.
Like this, the inner wall of the ring platform and the middle part of the sleeve all play a role in guiding the axial movement of the needle tube, the elastic element is located between the periphery of the needle tube and the inner wall of the sleeve, the radial size of the disinfection needle is reduced, the resistance of the needle tube when being inserted into soil is reduced, compact structure is realized, the reliable positioning of the elastic element is realized, the elastic element can apply downward axial force to the needle tube, and between the inner wall of the ring platform and the outer wall of the needle tube, labyrinth seal is formed between the inner wall of the sleeve and the outer wall of the needle tube, and two-stage seal of the first seal ring and the second seal ring is adopted, thereby preventing steam from leaking through the gap between the inner wall of the ring platform and the outer wall of the needle tube and through the gap between the inner wall of the sleeve and the outer wall of the needle tube.
The intermittent soil steam disinfection needle is characterized in that a sealing gasket is arranged on the lower surface of the end cover opposite to the upper end surface of the annular table.
The intermittent soil steam sterilization needle also comprises a conical needle point, wherein the large end of the conical part of the needle point is fixed with the needle tube, and the diameter of the large end of the conical part of the needle point is larger than that of the needle tube; the steam outlet is positioned on the side wall of the needle tube. Therefore, when the needle tube is inserted into soil, the large end of the conical needle tip can form a hole larger than the outer diameter of the needle tube in the soil, the blockage of the soil to the steam outlet is reduced, the steam is discharged into the soil more favorably, and the anti-blocking performance of the disinfection needle is improved.
The periphery of the upper part of the sleeve is provided with external threads, and the periphery of the sleeve at the lower part of the external threads is fixed with the limiting flange. Thus, the steam pipeline is conveniently connected with the steam pipeline through the external thread, and the screwing depth of the external thread is limited through the limiting flange.
Drawings
FIG. 1 is a schematic view of a steam sterilizing needle
FIG. 2 is a schematic view of the structure of the upper portion of the barrel and barrel.
In the figure, the base 41, the sleeve 42, the annular table 421, the inner limit step 422, the needle tube 43, the elastic element supporting step 431, the outer limit step 432, the steam inlet 433, the steam outlet 434, the needle tip 44, the compression spring 45, the end cover 46, the first sealing gasket 471, the second sealing gasket 472, the first sealing gasket 481, the second sealing gasket 482, the limit flange 49 and the steam pipeline 12.
Detailed Description
The intermittent soil steam disinfection needle shown in fig. 1 is composed of a base 41, a sleeve 42, a needle tube 43, a needle tip 44, a spring 45, an end cover 46, a first sealing gasket 471, a second sealing gasket 472, a first sealing ring 481, a second sealing ring 482, a limiting flange 49 and the like.
The sleeve is in threaded connection with the base through external threads at the upper end and is sealed by a second sealing gasket 472, so that steam leakage is prevented; the sleeve is prevented from being inserted too deeply into the base by limiting flanges 49 welded on the sleeve.
The end cover is in threaded connection with the upper end of the needle tube, the outer diameter of the end cover is larger than that of the needle tube, and a first sealing gasket 471 is arranged on the lower end face of the periphery of the end cover.
The middle part of the interior of the sleeve is provided with a ring table 421, and the lower part is provided with an inner limiting step 422.
The side wall of the upper part of the needle tube is provided with four steam inlets 433 which are uniformly distributed on the same cross section, the side wall of the lower part of the needle tube is provided with steam outlets 434 on different cross sections, and the number of the steam outlets on the same cross section is four. An elastic member supporting step 431 and an outer limit step 432 are provided on the sidewall of the needle tube between the steam inlet and the steam outlet.
A compression spring 45 as an elastic element is sleeved on the periphery of the needle tube and is positioned between the elastic element supporting step and the lower end face of the annular table. When the needle tube extends downwards under the action of the spring, the lower end face of the periphery of the end cover is matched with the upper end face of the annular table through the first sealing gasket 471, and a gap between the end cover and the annular table is sealed to prevent steam from entering the inner ring of the needle tube through the steam inlet and prevent steam from leaking.
When the needle tube is inserted into soil, the needle tube retracts upwards under the action of soil resistance, the end cover moves upwards, the steam inlet is exposed out of the annular table of the sleeve (the steam inlet is arranged above the upper end face of the annular table), steam flows into the needle tube from the steam inlet and is output from the steam outlet to sterilize the soil.
A first sealing ring 481 and a second sealing ring 482 are arranged between the sleeve and the needle tube for sealing the gap between the sleeve and the needle tube.
The inner limiting step inside the lower portion of the sleeve is matched with the outer limiting step on the needle tube to play a limiting role and limit the upward retraction distance of the needle tube.
The needle tip 43 is conical, and a boss is arranged above the needle tip and inserted into the needle tube; the diameter of the circular bottom surface of the cone of the needle point is larger than the outer diameter of the needle tube, so that the blockage of soil to the steam exhaust port is reduced, and the blockage prevention performance of the disinfection needle is improved.
The steam pipeline 12 is connected with a steam generating device and provides high-temperature steam required by soil disinfection. The base is welded to the steam line (of course, the base may also be considered as part of the steam line rather than being an integral part of the steam sterilizing needle). The sleeve is in threaded connection with the base, and when the needle tube is damaged, the sleeve can be unscrewed from the base to replace the needle tube.
The technology provides a soil steam disinfection needle which has high strength, good sealing performance and easy replacement and can intermittently output steam, when the needle is inserted into soil, a needle tube retracts upwards under the action of soil resistance, high-temperature steam flows into the needle tube through a steam inlet and is discharged from a steam outlet to sterilize and disinfect the soil; when the soil is pulled out, the needle tube extends downwards under the action of the spring, the steam inlet is sealed, steam cannot be discharged, and waste of the steam is avoided.
Claims (4)
1. Intermittent type formula soil steam disinfection needle, characterized by: it comprises a sleeve, a needle tube and an end cover with the diameter larger than that of the needle tube; the inner wall of the sleeve is provided with a ring platform; the upper part of the needle tube with the steam inlet penetrates through the annular table and extends into the sleeve, and the lower part of the needle tube with the steam outlet extends out of the sleeve; the upper end of the needle tube is sealed by the end cover, and a sealing gasket is arranged on the lower surface of the end cover opposite to the upper end surface of the annular table; the needle tube can be arranged in the sleeve in a mode of moving up and down along the axial direction, and an elastic element which enables the needle tube to move to the lower part relative to the annular table along the axial direction when in a normal state is arranged between the sleeve and the needle tube; when the needle tube moves to the lower part relative to the annular table, the periphery of the end cover contacts with the upper end face of the annular table, and the inner space of the needle tube is not communicated with the inner space of the upper part of the sleeve; when the needle tube moves to the upper part relative to the ring platform by overcoming the acting force of the elastic element, the end cover is separated from the upper end surface of the ring platform, the steam inlet is positioned above the ring platform, and the internal space at the upper part of the sleeve is communicated with the internal space of the needle tube through the steam inlet; the periphery of the upper part of the sleeve is provided with external threads, and the periphery of the sleeve at the lower part of the external threads is fixed with a limiting flange.
2. An intermittent soil steam sterilizing needle as claimed in claim 1, wherein: an inner limiting step is arranged on the inner wall of the sleeve below the annular table, and an outer limiting step axially opposite to the inner limiting step is arranged on the outer wall of the needle tube; when the outer limit step and the inner limit step are in axial contact, the highest limit position of the needle tube moving upwards relative to the ring platform is formed.
3. An intermittent soil steam sterilizing needle as claimed in claim 2, wherein: the outer wall of the needle tube is provided with an elastic element supporting step; the elastic element supports the step on the upper part of the outer limit step; the elastic element supporting step is positioned below the annular table and axially opposite to the lower end face of the annular table; the elastic element is positioned between the elastic element supporting step and the lower end face of the annular table; a first sealing ring is arranged between the inner wall of the ring platform and the outer wall of the needle tube corresponding to the inner wall of the ring platform; the inner wall of the sleeve between the lower part of the ring table and the inner limiting step is the inner wall of the middle part of the sleeve, the outer wall of the needle tube between the elastic element supporting step and the outer limiting step is the outer wall of the middle part of the needle tube, and a second sealing ring is arranged between the inner wall of the middle part of the sleeve and the outer wall of the middle part of the needle tube.
4. An intermittent soil steam sterilizing needle as claimed in claim 1, wherein: the needle also comprises a conical needle tip, the large end of the conical part of the needle tip is fixed with the needle tube, and the diameter of the large end of the conical part of the needle tip is larger than that of the needle tube; the steam outlet is positioned on the side wall of the needle tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159515.XA CN106729796B (en) | 2017-03-17 | 2017-03-17 | Intermittent soil steam sterilizing needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159515.XA CN106729796B (en) | 2017-03-17 | 2017-03-17 | Intermittent soil steam sterilizing needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106729796A CN106729796A (en) | 2017-05-31 |
| CN106729796B true CN106729796B (en) | 2023-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710159515.XA Active CN106729796B (en) | 2017-03-17 | 2017-03-17 | Intermittent soil steam sterilizing needle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111758714A (en) * | 2020-07-03 | 2020-10-13 | 徐州蔬客达农业科技有限公司 | High-temperature hot-air soil sterilization device and use method thereof |
| CN116672470B (en) * | 2023-07-12 | 2023-12-12 | 甘肃省农业科学院植物保护研究所 | Soil steam sterilizer for pest control |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2854765A1 (en) * | 2003-05-13 | 2004-11-19 | Michel Verdiani | Soil steriliser has pressurised steam generator connected to perforated tubes on spring-loaded tines that penetrate soil on towed frame |
| CN203369295U (en) * | 2013-07-30 | 2014-01-01 | 孙腾腾 | Axial movement sealing heat injection mechanism |
| CN105031678A (en) * | 2015-09-15 | 2015-11-11 | 南京林业大学 | Soil steam sterilization machine |
| CN105338810A (en) * | 2013-06-21 | 2016-02-17 | 金有信 | Steam type pest extermination apparatus |
| CN207323735U (en) * | 2017-03-17 | 2018-05-08 | 南京林业大学 | Intermittent sterilising soil by steam pin |
-
2017
- 2017-03-17 CN CN201710159515.XA patent/CN106729796B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2854765A1 (en) * | 2003-05-13 | 2004-11-19 | Michel Verdiani | Soil steriliser has pressurised steam generator connected to perforated tubes on spring-loaded tines that penetrate soil on towed frame |
| CN105338810A (en) * | 2013-06-21 | 2016-02-17 | 金有信 | Steam type pest extermination apparatus |
| CN203369295U (en) * | 2013-07-30 | 2014-01-01 | 孙腾腾 | Axial movement sealing heat injection mechanism |
| CN105031678A (en) * | 2015-09-15 | 2015-11-11 | 南京林业大学 | Soil steam sterilization machine |
| CN207323735U (en) * | 2017-03-17 | 2018-05-08 | 南京林业大学 | Intermittent sterilising soil by steam pin |
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| CN106729796A (en) | 2017-05-31 |
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