CN115350824A - Combined sheet type pore diameter stepless adjustable one-way high-speed gas jet nozzle - Google Patents
Combined sheet type pore diameter stepless adjustable one-way high-speed gas jet nozzle Download PDFInfo
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- CN115350824A CN115350824A CN202211070664.6A CN202211070664A CN115350824A CN 115350824 A CN115350824 A CN 115350824A CN 202211070664 A CN202211070664 A CN 202211070664A CN 115350824 A CN115350824 A CN 115350824A
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- 239000011148 porous material Substances 0.000 title description 6
- 238000009333 weeding Methods 0.000 claims abstract description 20
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 19
- 235000009566 rice Nutrition 0.000 claims abstract description 19
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000000670 limiting effect Effects 0.000 claims description 26
- 241000209094 Oryza Species 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 241000196324 Embryophyta Species 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002786 root growth Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B39/00—Other machines specially adapted for working soil on which crops are growing
- A01B39/12—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture
- A01B39/18—Other machines specially adapted for working soil on which crops are growing for special purposes, e.g. for special culture for weeding
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B39/00—Other machines specially adapted for working soil on which crops are growing
- A01B39/20—Tools; Details
- A01B39/22—Tools; Mounting tools
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
The invention belongs to the field of gas jet nozzles, and particularly relates to a combined sheet type one-way high-speed gas jet nozzle with steplessly adjustable aperture for mechanical weeding of rice, which comprises: the upper cavity, the lower cavity and the cavity combination piece jointly form a nozzle inner cavity through which high-pressure air flows; the one-way valve plate and the one-way valve spring jointly form a one-way valve, so that a medium can only flow in one direction but cannot flow backwards; the invention can change the aperture of the nozzle on the premise of not replacing the nozzle, avoids the complex process of matching a plurality of nozzles and replacing the nozzle, and has the advantages of saving cost and being convenient for adjustment.
Description
Technical Field
The invention belongs to the field of gas jet nozzles, and particularly relates to a combined sheet type one-way high-speed gas jet nozzle with steplessly adjustable aperture, which is used for mechanical weeding of rice.
Background
The nozzle is an important component in a gas jet system, and high-pressure gas generated by compression of an air compressor flows to the nozzle through a gas conveying pipeline, and a high-speed gas jet is formed through the nozzle to impact a target object. The jet flow impact-based heat exchanger is applied to multiple industries such as water conservancy, aviation, energy, petrochemical engineering and the like, for example, in the aviation industry, the high-efficiency cooling of a hot end part of an engine and the hot gas anti-icing structure design of an inlet part of a gas inlet channel increase the local heat exchange strength by utilizing jet flow impact, and the heat exchange effect is strengthened; the jet nozzle is commonly used for seabed trenching operation in the water conservancy industry, and the erosion capacity and the impact domain size of the jet directly influence the trenching effect and the economic benefit.
The aperture of the gas jet nozzle is related to jet impact force, and the aperture of the common gas jet nozzle is mostly fixed and unadjustable, and most of the common gas jet nozzles need to be matched with a one-way valve plate for use. If need change the nozzle aperture of gas jet under operating condition, mostly pass through to change the nozzle realization in corresponding aperture, this mode need prepare a plurality of apertures nozzle for subsequent use, can't conveniently adjust nozzle aperture. The application scene of the invention is mainly used for weeding paddy fields, and the mud layer where the root system of the weeds is located is dispersed by the impact force of the high-speed gas jet, so that the root system of the weeds loses the support and the purpose of green weeding is achieved. In order to solve the problem that the nozzle is inconvenient to replace in field operation and muddy water backflow easily causes damage to a jet system, the invention provides the combined sheet type one-way high-speed gas jet nozzle with the stepless adjustable aperture.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides a combined sheet type one-way high-speed gas jet nozzle with steplessly adjustable aperture, and solves the problems that the prior technical scheme can not complete the steplessly adjustable aperture of the gas jet nozzle and needs to be additionally provided with a one-way valve sheet.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the utility model provides a combination piece formula aperture electrodeless adjustable high-speed gas jet nozzle that rice machinery weed usefulness which characterized in that includes: the device comprises an upper cavity, a lower cavity, a cavity combination piece, a one-way valve spring, an adjusting outer cylinder and a fastening rubber sleeve;
the outer threads are arranged on the periphery of the upper end and the periphery of the lower end of the upper cavity, a protruding circular ring is arranged at the position close to the waist part, the outer surface of the circular ring is rough, the inner cavity is divided into two sections, the diameter of the upper cavity is smaller, the diameter of the lower cavity is larger, and the transition part between the upper cavity and the lower cavity is in a step shape;
the outer periphery of the lower cavity is provided with external threads, the inner part of the lower cavity is a cylindrical cavity, and the diameter of the cylindrical cavity is consistent with that of the upper part of the inner cavity of the upper cavity;
the upper cavity and the lower cavity are in interference fit to ensure air tightness, and the external threads on the periphery of the lower end of the upper cavity and the external threads of the lower cavity are in proper positions during assembly;
a plurality of cavity combination pieces can form a conical channel with a wide upper part and a narrow lower part, a feeler lever is fixedly arranged at the outer side of each cavity combination piece, the tail end of the feeler lever is provided with an inclined limiting piece, and a hemispherical contact is arranged in the middle of each limiting piece;
the upper end of the cavity combination piece and the lower end of the lower cavity are glued or welded, and the cavity combination piece and the lower cavity can be designed into a whole;
the upper end of the adjusting outer cylinder is a cylindrical part, the lower end of the adjusting outer cylinder is a conical part, an inner thread is designed on the inner ring of the upper end of the adjusting outer cylinder, a circular ring-shaped protruding part with a limiting effect is designed on the upper end surface and the lower end surface of the conical part of the lower end, the conical part of the lower end is divided into an inner layer and an outer layer, a certain distance is reserved between the inner layer and the outer layer, and rectangular openings with the number identical to that of the cavity combination pieces are arranged on the inner layer;
the external threads at the lower end of the upper cavity and the external threads at the periphery of the lower cavity are matched with the internal threads of the inner ring at the upper end of the adjusting outer cylinder;
the limiting piece and the hemispherical contact at the tail end of each cavity combination piece are positioned between the inner layer and the outer layer of the conical part at the lower end of the adjusting outer barrel, the limiting piece and the hemispherical contact at the tail end of each cavity combination piece correspond to a rectangular opening of the inner layer of the conical part at the lower end of the adjusting outer barrel, and the 8 hemispherical contacts are always positioned on a circular curve on the horizontal plane.
The upper end of the one-way valve spring is coaxially and fixedly connected with the one-way valve plate, and the lower end of the one-way valve spring is coaxially and fixedly connected with the upper end of the lower cavity;
the check valve plate is positioned at the slightly larger part of the diameter in the inner cavity of the upper cavity, and the check valve plate is tightly attached to the horizontal plane of the inner cavity under the elastic force of the check valve spring in a non-operation state;
the fastening rubber sleeve is a cylindrical elastic piece and is sleeved on the adjusting outer cylinder and a protruding ring on the periphery of the lower end of the upper cavity, so that the adjusted adjusting outer cylinder and the thread byproduct of the upper cavity are prevented from rotating relatively.
(III) advantageous effects
The invention has the beneficial effects that:
according to the combined piece type one-way high-speed gas jet nozzle with the stepless adjustable aperture, the inner cavity of the nozzle is formed by combining a plurality of combined pieces, the relative rotation between two part thread pairs is converted into the movement of the combined piece feeler lever in the axial direction of the inner cavity of the nozzle, so that the purpose of adjusting the diameter of the cavity at the tail end of the nozzle is achieved, the aperture of the nozzle can be changed on the premise of not changing the nozzle, and the complicated process of matching a plurality of nozzles and changing the nozzle is avoided; in addition, the one-way valve plate structure ensures the one-way flow of the medium, prevents muddy water from flowing back to damage equipment, and the one-way valve plate and the nozzle are integrally designed, so that the problem that the one-way valve plate needs to be assembled on the nozzle in actual application is avoided.
Drawings
FIG. 1 is a schematic diagram of the principle of high-velocity gas jet weeding;
FIG. 2 is a schematic structural diagram of an embodiment of the combined-sheet type stepless adjustable unidirectional high-speed gas jet nozzle with a minimum aperture and a closed unidirectional valve sheet;
FIG. 3 is a cross-sectional view of an embodiment of the combined-sheet type stepless adjustable unidirectional high-speed gas jet nozzle with a minimum aperture and a closed unidirectional valve sheet;
FIG. 4 is a schematic structural diagram of the embodiment of the present invention in a minimum aperture state and when the check valve is opened;
FIG. 5 is a cross-sectional view of the embodiment of the present invention in a minimum aperture state and when the check valve plate is opened;
FIG. 6 is a schematic structural diagram of the embodiment of the present invention in a maximum aperture state with a check valve plate closed;
FIG. 7 is a cross-sectional view of the embodiment of the present invention in a maximum aperture state and with the check valve plate closed;
FIG. 8 is a schematic structural view of the embodiment of the present invention in a maximum aperture state with the check valve opened;
FIG. 9 is a cross-sectional view of the embodiment of the present invention in a maximum aperture state with the check valve plate opened;
FIG. 10 is an elevation view of the upper chamber body in an embodiment of the present invention;
FIG. 11 is a cross-sectional view of the upper chamber body in an embodiment of the present invention;
FIG. 12 is a front view of a lower chamber in an embodiment of the present invention;
FIG. 13 is a cross-sectional view of a lower chamber in an embodiment of the present invention;
FIG. 14 is an isometric view of a cavity plate assembly in an embodiment of the invention;
FIG. 15 is a side view of a cavity plate assembly in an embodiment of the invention;
FIG. 16 is a front view of the inner chamber of the nozzle in an embodiment of the present invention;
FIG. 17 is an isometric view of the inner chamber of a nozzle in an embodiment of the invention;
FIG. 18 is an enlarged partial view of the nozzle bore in an embodiment of the present invention;
FIG. 19 is a schematic view of a check valve plate according to an embodiment of the present invention;
FIG. 20 is a schematic view of a check valve spring in an embodiment of the present invention;
FIG. 21 is a front view of the adjustment barrel in an embodiment of the present invention;
FIG. 22 is a cross-sectional view taken in the direction E of the adjustment sleeve in the embodiment of the present invention;
FIG. 23 is a sectional view in the direction F of the adjustment outer cylinder in the embodiment of the present invention;
FIG. 24 is an isometric view of an adjustment sleeve in an embodiment of the invention;
FIG. 25 is a top view of the adjustment barrel in an embodiment of the present invention;
FIG. 26 is an isometric view of a clamping rubber boot in an embodiment of the present invention;
FIG. 27 is a front view of a fastening rubber boot in an embodiment of the present invention;
FIG. 28 is a cross-sectional view of a fastening rubber boot in an embodiment of the present invention;
FIG. 29 is a top view of a clamping rubber boot in an embodiment of the present invention;
[ description of reference ]
In the figure: 1-upper cavity, 2-lower cavity, 3-cavity combination piece, 301-combination piece, 302-feeler lever, 303-inclined limiting piece, 304-hemispherical contact, 4-one-way valve piece, 5-one-way valve spring, 6-adjusting outer cylinder and 7-fastening rubber sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the schematic diagram of the principle of high-speed gas jet weeding shows that the environment of the rice seedlings in the optimal weeding period (7-14 days after the rice seedlings are transplanted) can be divided into a water layer, a mud layer and a mud layer from top to bottom, wherein the water layer is shallow and about 0.03-0.06 m, the mud layer is a thin and soft mud-water mixture, the depth is about 0.2-0.5 m below the water surface, the mixture is easily dispersed by air flow, the water content of the mud layer is less than that of the mud layer, the resistance to the air flow is better, and the mud layer is not easily damaged by the air flow. Weeds are short and small in weeding period, only one main root exists, and the root system of the main root is mainly distributed in a mud layer; besides the main roots, rice seedlings have developed secondary roots, and most of the roots are distributed in a soil layer. A mechanical rice weeding method based on high-speed gas jet flow mainly utilizes the difference of the distribution depth of weeds and seedling roots in a paddy field and the root growth environment thereof, aims at the characteristic that the mobility of a mud layer growing on the root system of weeds in the paddy field is stronger, and utilizes the energy carried by the high-speed gas jet flow generated by a nozzle to impact the mud layer, so that the mud layer growing on the root system of weeds is dispersed, and the weeds float on the water surface due to the loss of the support of the root system and die gradually; the root system of the rice seedling breaks through the mud layer because of deep root penetration, and can resist the air current impact and is not damaged.
The invention provides a combined piece type one-way high-speed gas jet nozzle with steplessly adjustable aperture for mechanical weeding of rice, which comprises an upper cavity 1, a lower cavity 2, a cavity combined piece 3, a one-way valve plate 4, a one-way valve spring 5, an adjusting outer cylinder 6 and a fastening rubber sleeve 7, as shown in figures 2 and 3.
Fig. 2 is a schematic structural view of an embodiment of the combined-sheet type stepless adjustable one-way high-speed gas jet nozzle with a pore diameter in a minimum pore diameter state and a one-way valve plate closed state, fig. 3 is a cross-sectional view of an embodiment of the combined-sheet type stepless adjustable one-way high-speed gas jet nozzle with a pore diameter in the minimum pore diameter state and a one-way valve plate closed state, at the moment, the one-way valve plate 4 is tightly attached to a plane part of a cavity 1 under the pressure action of a one-way valve spring 5, no gas flows through the nozzle, and muddy water cannot flow backwards due to the obstruction of the one-way valve.
Fig. 4 is a schematic structural view of the embodiment of the invention in a minimum aperture state and when the check valve plate is opened, fig. 5 is a cross-sectional view of the embodiment of the invention in the minimum aperture state and when the check valve plate is opened, at this time, high-pressure air is input through the upper end of the upper cavity 1, the high-pressure air impacts the plane of the check valve plate 4, downward pressure is provided for the check valve plate 4, when the pressure is larger than the elastic force of the check spring 5, the check spring 5 is compressed, the check valve is opened, and the high-pressure air can impact weeds in a paddy field through high-speed air flow formed by a nozzle.
Fig. 6 is a schematic structural view of the embodiment of the present invention in a maximum aperture state and when the check valve plate is closed, fig. 7 is a cross-sectional view of the embodiment of the present invention in the maximum aperture state and when the check valve plate is closed, the check valve plate 4 is tightly attached to the planar portion of the upper chamber 1 under the pressure of the check valve spring 5, no air flows through the nozzle, and the muddy water cannot flow backwards due to the obstruction of the check valve.
Fig. 8 is a schematic structural view of the embodiment of the invention in a maximum aperture state and when the check valve plate is opened, fig. 9 is a cross-sectional view of the embodiment of the invention in the maximum aperture state and when the check valve plate is opened, at this time, high-pressure air is input through the upper end of the upper cavity 1, the high-pressure air impacts the plane of the check valve plate 4, downward pressure is provided to the check valve plate 4, when the pressure is larger than the elastic force of the check spring 5, the check spring 5 is compressed, the check valve is opened, and the high-pressure air can impact weeds in the paddy field through high-speed air flow formed by the nozzle.
As shown in fig. 10 and 11, the upper end periphery and the lower end periphery of the upper cavity 1 are provided with external threads, a protruding circular ring is arranged at the lower part of the waist part, the outer surface of the circular ring is rough, the inner cavity is divided into two sections, the diameter of the upper cavity is smaller, and the diameter of the lower cavity is slightly larger.
As shown in fig. 12 and 13, the lower cavity has external threads on its outer periphery and a cylindrical cavity inside, and the diameter of the cylindrical cavity is the same as the upper part of the inner cavity of the upper cavity.
Preferably, be interference fit between upper chamber body 1 and the lower chamber body 2 to guarantee the gas tightness, it should be noted that, during the assembly, upper chamber body 1 lower extreme periphery external screw thread and lower chamber body 2 external screw thread should be in the right position.
As shown in fig. 14 and 15, the cavity assembly plate 3 includes an assembly plate 301, a contact rod 302, an inclined limiting plate 303, and a hemispherical contact 304. The contact rod 302 is located outside the combination piece 301, the end of the contact rod 302 is provided with an inclined limiting piece 303, and a hemispherical contact 304 is arranged in the middle of the inclined limiting piece 303.
The upper chamber 1, the lower chamber 2, and the plurality of (8 in the example of the present invention) chamber assembly pieces 3 may collectively constitute the inner chamber of the nozzle as shown in fig. 16, 17, and 18. The upper cavity 1 and the lower cavity 2 are assembled in an interference fit manner, a plurality of cavity combination pieces 3 (8 in the embodiment of the invention) can form a conical channel with a wide upper part and a narrow lower part, the upper ends of the cavity combination pieces 3 and the lower ends of the lower cavity 2 can be glued or welded, and the cavity combination pieces and the lower cavity can be designed into a whole during actual production.
FIG. 19 is a schematic view of a check valve plate according to an embodiment of the invention.
FIG. 20 is a schematic view of a check valve spring in an embodiment of the present invention.
As shown in fig. 21 to 25, the adjusting outer cylinder 6 is a part having a cylindrical upper end and a tapered lower end, the inner ring of the upper end is provided with an internal thread, the tapered portion of the lower end is provided with annular protruding portions for limiting the upper and lower end faces, the tapered portion of the lower end is divided into an inner layer and an outer layer, a certain distance is provided between the inner layer and the outer layer, the inner layer is provided with a plurality of (8 in the present embodiment) rectangular openings, and the cylindrical portion of the adjusting outer cylinder 6 has a rough outer periphery.
As shown in fig. 26 to 29, the fastening rubber boot 7 is a cylindrical ring-shaped member made of rubber.
When assembling the combined sheet type one-way high-speed gas jet nozzle with stepless adjustable aperture:
the external threads on the periphery of the lower end of the upper cavity 1 and the external threads on the periphery of the lower cavity 2 are matched with the internal threads of the inner ring at the upper end of the adjusting outer cylinder 6.
The inclined limiting sheet 303 and the hemispherical contact 304 at the tail end of the cavity combination sheet 3 are positioned between the inner layer and the outer layer of the conical part at the lower end of the adjusting outer cylinder 6, the inclined limiting sheet 303 and the hemispherical contact 304 at the tail end of each cavity combination sheet 3 correspond to a rectangular opening of the inner layer of the conical part at the lower end of the adjusting outer cylinder, and the 8 hemispherical contacts 304 are always positioned on a circular curve on the horizontal plane.
The upper end of the one-way valve spring 5 is coaxially and fixedly connected with the one-way valve plate 4, and the lower end of the one-way valve spring 5 is coaxially and fixedly connected with the upper end of the lower cavity 2.
The one-way valve plate 4 is positioned at the slightly larger diameter part in the inner cavity of the upper cavity 1, and in a non-operation state, the one-way valve plate 4 is tightly attached to the horizontal plane inside the cavity of the upper cavity 1 under the elastic force action of the one-way valve spring 5 to keep the closed state of the one-way valve.
The fastening rubber sleeve 7 is a cylindrical elastic part and is sleeved on the protruding circular rings at the lower end peripheries of the adjusting outer cylinder 6 and the upper cavity 1, and the adjusted adjusting outer cylinder 6 and the thread by-product of the upper cavity 1 are prevented from relatively rotating through the friction force between the rough surfaces of the fastening rubber sleeve 7 and the adjusting outer cylinder 6 and the rough surface of the protruding circular ring part at the lower end periphery of the upper cavity 1.
When the aperture size of the air outlet of the jet nozzle needs to be adjusted, the fastening rubber sleeve 7 is taken down, then the adjusting outer cylinder 6 is rotated to adjust the relative position of the adjusting outer cylinder 6 and the thread pair between the outer thread at the lower end of the upper cavity 1 and the lower cavity 2, at the moment, the adjusting outer cylinder 6 generates the change of the axial position relative to the lower cavity 2, the inclined limiting sheet 303 and the hemispherical contact 304 of the cavity combination sheet 3 are driven to generate the change of the radial position relative to the adjusting outer cylinder 6, the inclined limiting sheet 303 and the hemispherical contact 304 are always positioned between the inner layer and the outer layer of the conical part at the tail end of the adjusting outer cylinder 6, but the inclined limiting sheet slides along the rectangular opening of the inner layer of the conical part at the tail end of the adjusting outer cylinder 6, the diameter of the circular curve where the 8 hemispherical contacts are positioned is changed, and the aperture size of the air outlet of the jet nozzle is changed. During actual processing, a layer of elastic film material is adhered to the inner surface of the inner cavity of the nozzle formed by the cavity combination pieces 3, the elastic film material covers the inner surface of the combination pieces 301 in the cavity combination pieces 3, but does not adhere to the connection positions of the two adjacent combination pieces 301, when the aperture of the nozzle is enlarged, the elastic film material is stretched due to stress, and the cross section of the tail end of the inner cavity of the nozzle is a nearly circular shape formed by combining the tail end arcs of the plurality of cavity combination pieces and straight lines formed by stretching the elastic film due to stress.
After the aperture is adjusted, the fastening rubber sleeve 7 is sleeved on the adjusting outer cylinder 6 and the protruding circular ring on the periphery of the lower end of the upper cavity 1 again.
The foregoing describes the technical principles of the present invention in conjunction with specific embodiments, which are provided for the purpose of illustrating the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, which shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a combination piece formula aperture electrodeless adjustable one-way high-speed gas jet nozzle that rice machinery weeding used which characterized in that includes: the device comprises an upper cavity, a lower cavity, a cavity combination piece, a one-way valve spring, an adjusting outer cylinder and a fastening rubber sleeve;
the upper cavity, the lower cavity and the cavity combination piece jointly form a nozzle inner cavity through which high-pressure air flows; the one-way valve plate and the one-way valve spring jointly form a one-way valve, so that a medium can only flow in one direction and cannot flow backwards; the relative positions of the inner cavity of the nozzle and the outer cylinder are adjusted, so that the relative rotation between the two part thread pairs can be converted into the axial movement of the combined sheet feeler lever in the inner cavity of the nozzle, and the purpose of adjusting the diameter of the cavity at the tail end of the nozzle is achieved.
2. The combination piece type aperture stepless adjustable one-way high-speed gas jet nozzle for rice mechanical weeding according to claim 1, wherein the upper end periphery and the lower end periphery of the upper cavity are provided with external threads, a protruding ring is arranged at the lower part of the waist part, the outer surface of the ring is rough, the inner cavity is divided into two sections, the diameter of the upper cavity is smaller, the diameter of the lower cavity is slightly larger, and the transition part between the upper cavity and the lower cavity is in a step shape.
3. The combined-sheet type one-way high-speed gas jet nozzle with the stepless adjustable aperture for mechanical weeding of rice as claimed in claim 1, wherein the lower cavity is externally threaded at the periphery and internally provided with a cylindrical cavity, and the diameter of the cylindrical cavity is consistent with the upper part of the inner cavity of the upper cavity.
4. The combined-sheet type pore-diameter stepless adjustable one-way high-speed gas jet nozzle for mechanical weeding of rice as claimed in claim 1, wherein the upper cavity and the lower cavity are in interference fit to ensure air tightness, and it should be noted that external threads on the periphery of the lower end of the upper cavity and external threads of the lower cavity are in proper positions during assembly.
5. The combination piece type one-way high-speed gas jet nozzle with the stepless adjustable aperture for mechanical weeding of rice as claimed in claim 1, wherein the tail end of the inner cavity of the nozzle is a conical channel with a wide top and a narrow bottom, which is formed by a plurality of same cavity combination pieces, the outer side of each cavity combination piece is fixedly provided with a feeler lever, the tail end of the feeler lever is an inclined limiting piece, and the middle position of the limiting piece is provided with a hemispherical contact; the upper end of the cavity combination piece and the lower end of the lower cavity are glued or welded, and the cavity combination piece and the lower cavity can be designed into a whole.
6. The combination piece type one-way high-speed gas jet nozzle with the stepless adjustable aperture for mechanical weeding of rice as claimed in claim 1, wherein the upper end of the adjusting outer cylinder is a cylindrical part, the lower end of the adjusting outer cylinder is a conical part, the inner ring of the upper end of the adjusting outer cylinder is provided with internal threads, the upper end face and the lower end face of the conical part of the lower end are provided with annular protruding parts playing a limiting role, the conical part of the lower end is divided into an inner layer and an outer layer, a certain distance is reserved between the inner layer and the outer layer, and the inner layer is provided with rectangular openings with the number being consistent with the number of the cavity combination pieces.
7. The combined-sheet-type one-way high-speed gas jet nozzle with the stepless adjustable aperture for mechanical weeding of rice as claimed in claim 1, wherein the upper end of the one-way valve spring is coaxially fixedly connected with the one-way valve sheet, and the lower end of the one-way valve spring is coaxially fixedly connected with the upper end of the lower cavity; the check valve plate is positioned at the slightly larger part of the diameter in the inner cavity of the upper cavity, and the check valve plate is tightly attached to the horizontal plane of the inner cavity under the elastic force of the check valve spring in a non-operation state.
8. The combination piece type one-way high-speed gas jet nozzle with the stepless adjustable aperture for mechanical weeding of rice as claimed in claim 1, wherein the adjusting outer cylinder is a part with a cylindrical upper end and a conical lower end, an inner ring at the upper end is designed with an internal thread, the upper end face and the lower end face of the conical part at the lower end are both designed with annular protruding parts for limiting, the conical part at the lower end is divided into an inner layer and an outer layer, a certain distance is reserved between the inner layer and the outer layer, the inner layer is provided with a plurality of rectangular openings, and the cylindrical part of the adjusting outer cylinder is rough in the periphery.
9. The combination piece type one-way high-speed gas jet nozzle with stepless adjustable aperture for mechanical weeding of rice as claimed in claim 1, wherein the inclined limiting piece and the hemispherical contact at the tail end of the cavity combination piece are positioned between the inner and outer layers of the conical part at the lower end of the adjusting outer cylinder, the inclined limiting piece and the hemispherical contact at the tail end of each cavity combination piece correspond to a rectangular opening at the inner layer of the conical part at the lower end of the adjusting outer cylinder, and the hemispherical contact is always positioned on a circular curve on the horizontal plane; when the outer barrel is adjusted in a rotating mode, the outer barrel is rotated relative to the upper cavity and the lower cavity, the position of the adjusting outer barrel relative to the lower cavity is changed in an axial direction, the inclined limiting piece and the hemispherical contact of the cavity combination piece are driven to change relative to the radial position of the adjusting outer barrel, the inclined limiting piece and the hemispherical contact are located between the inner layer and the outer layer of the conical part at the tail end of the adjusting outer barrel all the time, however, the inclined limiting piece and the hemispherical contact slide along the rectangular opening of the inner layer of the conical part at the tail end of the adjusting outer barrel, the diameter of the circular curve where the hemispherical contact is located changes along with the inclined limiting piece and the hemispherical contact, and the aperture size of the air outlet of the jet nozzle changes.
10. The combination piece type aperture stepless adjustable one-way high-speed gas jet nozzle for mechanical weeding of rice as claimed in claim 1, characterized in that during actual processing, a layer of elastic film material is adhered to the inner surface of the inner cavity of the nozzle composed of the cavity combination pieces, the elastic film material covers the inner surface of the combination piece of the cavity combination pieces, but does not adhere to the connection line of two adjacent combination pieces, when the aperture of the nozzle is enlarged, the elastic film material is stretched due to stress, and the cross section of the tail end of the inner cavity of the nozzle is a nearly circular shape formed by combining the tail end arcs of the plurality of cavity combination pieces and the straight line formed by stretching the elastic film due to stress.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211070664.6A CN115350824A (en) | 2022-09-02 | 2022-09-02 | Combined sheet type pore diameter stepless adjustable one-way high-speed gas jet nozzle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211070664.6A CN115350824A (en) | 2022-09-02 | 2022-09-02 | Combined sheet type pore diameter stepless adjustable one-way high-speed gas jet nozzle |
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| CN202211070664.6A Pending CN115350824A (en) | 2022-09-02 | 2022-09-02 | Combined sheet type pore diameter stepless adjustable one-way high-speed gas jet nozzle |
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| TW305102U (en) * | 1996-11-15 | 1997-05-11 | Qing-Xiong Zhang | Flow-stopping apparatus of agricultural spray nozzle |
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| CN103521371A (en) * | 2012-07-02 | 2014-01-22 | 苏州智泽电动工具有限公司 | Agricultural sprayer nozzle device free of water dripping and water leakage |
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| CN110076014A (en) * | 2019-06-14 | 2019-08-02 | 东北农业大学 | A kind of cone angle based on accurate variable rate spray system is adaptively atomized fan nozzle |
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2022
- 2022-09-02 CN CN202211070664.6A patent/CN115350824A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW305102U (en) * | 1996-11-15 | 1997-05-11 | Qing-Xiong Zhang | Flow-stopping apparatus of agricultural spray nozzle |
| DE202011004819U1 (en) * | 2011-04-04 | 2011-09-05 | Oleg Abdrazjakov | Adjustable heat-resistant multi-purpose gas burner |
| CN103521371A (en) * | 2012-07-02 | 2014-01-22 | 苏州智泽电动工具有限公司 | Agricultural sprayer nozzle device free of water dripping and water leakage |
| CN207756305U (en) * | 2017-12-08 | 2018-08-24 | 安徽新合富力科技有限公司 | A kind of nozzle for Treatment of Metal Surface medicament |
| CN110076014A (en) * | 2019-06-14 | 2019-08-02 | 东北农业大学 | A kind of cone angle based on accurate variable rate spray system is adaptively atomized fan nozzle |
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