CN210522837U - Self-adaptive stepless variable nozzle with automatically adjustable orifice cross section of outflow opening - Google Patents
Self-adaptive stepless variable nozzle with automatically adjustable orifice cross section of outflow opening Download PDFInfo
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- CN210522837U CN210522837U CN201921216936.2U CN201921216936U CN210522837U CN 210522837 U CN210522837 U CN 210522837U CN 201921216936 U CN201921216936 U CN 201921216936U CN 210522837 U CN210522837 U CN 210522837U
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- nozzle
- frame
- outlet
- nozzle body
- regulating valve
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- 239000007921 spray Substances 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003630 growth substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010914 pesticide waste Substances 0.000 description 1
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Abstract
本实用新型公开了一种出流口孔径截面可自动调节的自适应无级变量喷头，包括喷嘴体、喷头架、弹簧、流量调节阀和旋流阀芯，喷嘴体和喷头架通过螺纹连接，喷头架上设有进水接头和导向柱，流量调节阀上设有导向套和顶杆，导向柱插入导向套中，弹簧套装于嵌插在一起的导向柱和导向套上，流量调节阀与喷头架内侧壁间装有密封圈，顶杆穿过旋流阀芯的中空通道，其和通道间装有密封圈，顶杆的末端为与喷嘴体的出流口匹配的锥形头，在流量调节阀带动下，利用锥形头实现对喷嘴体的出流口孔径截面积(通流截面积大小)的调节，从而调整了喷头喷雾量的大小。本实用新型能依据喷雾压力自动调节喷雾流量大小，在喷雾压力变化的情况下保证喷雾雾滴质量基本不变。
The utility model discloses a self-adaptive stepless variable nozzle with an automatic adjustment of the aperture section of an outlet, which comprises a nozzle body, a nozzle frame, a spring, a flow regulating valve and a swirl valve core. The nozzle body and the nozzle frame are connected by threads. The nozzle frame is provided with a water inlet joint and a guide column, the flow control valve is provided with a guide sleeve and a push rod, the guide column is inserted into the guide sleeve, and the spring is sleeved on the embedded guide column and guide sleeve. A sealing ring is installed between the inner side walls of the nozzle frame, the ejector rod passes through the hollow channel of the swirl valve core, and a sealing ring is installed between it and the channel, and the end of the ejector rod is a conical head matching the outlet of the nozzle body. Driven by the flow control valve, the conical head is used to adjust the cross-sectional area of the outlet aperture (the cross-sectional area of the flow) of the nozzle body, thereby adjusting the spray volume of the nozzle. The utility model can automatically adjust the size of the spray flow according to the spray pressure, and can ensure that the quality of the spray droplets is basically unchanged under the condition of the change of the spray pressure.
Description
Technical Field
The utility model relates to a technical field of agricultural production equipment (devices such as pesticide preparation, growth regulator, liquid fertilizer's such as variable spray of crops, fruit tree), especially indicate but the stepless variable shower nozzle of self-adaptation of outflow aperture cross-section automatically regulated).
Background
At present, in agricultural plant protection operation, most of spray heads used by plant protection devices for spraying pesticide preparations and the like are quantitative spray heads, the aperture (through-flow sectional area) of an outlet is constant, the spray flow rate of the spray heads is related to the spray pressure, a stable spray flow rate is achieved under a certain spray pressure, the atomization state and the droplet particle size distribution are good, and the atomization state is deteriorated under other spray pressures. Such spray heads are therefore only suitable for quantitative continuous spraying operations at a certain spray pressure (or within a small pressure variation range). To achieve variable spray, the spray amount needs to be changed by changing the spray pressure of the sprayer, for example, the spray amount can be increased by increasing the spray pressure. However, for such a quantitative nozzle with a constant outlet orifice diameter (flow cross-sectional area), the change of the spray flow rate is not proportional to the change of the spray pressure, and the change of the spray flow rate is often small due to a large change of the spray pressure, and the change of the spray pressure changes the atomization characteristics and the droplet size distribution of the nozzle, thereby affecting the operation effect. For example, when the spray pressure is increased, the flow rate is slightly increased but the droplet size is decreased, and when the spray pressure is decreased, the flow rate is decreased and the droplet size is increased.
Currently, variable spray technology has become a main method for solving a series of problems of environmental pollution, pesticide waste and the like caused by excessive use of pesticides. The variable spray technology has various realization methods, wherein the variable spray head has the advantages of simple control system and small time delay, and has certain application value.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's shortcoming and not enough, but provided an but outflow aperture cross-section automatically regulated's self-adaptation infinitely variable shower nozzle, can be according to the through-flow sectional area of spraying pressure size automatically regulated shower nozzle and adjust the spray volume size to guarantee better atomizing state and droplet particle size distribution.
In order to achieve the above object, the present invention provides a technical solution: a self-adaptive stepless variable nozzle with an automatically adjustable orifice cross section of an outflow port comprises a nozzle body, a nozzle head frame, a spring, a flow regulating valve and a swirl valve core; the nozzle body is connected with the nozzle frame through threads, the swirl valve core is of a hollow structure and is arranged in the nozzle body, and a hollow channel corresponds to the outflow port of the nozzle body and is positioned on the same axis; one side of the nozzle frame is provided with a water inlet joint which is close to the threaded connection part of the nozzle frame and the nozzle body, the middle position of the inner top of the nozzle frame is provided with a guide post which has the same axis with the outflow port and is used for guiding the movement of the flow regulating valve, the flow regulating valve is arranged in the nozzle frame, a guide sleeve matched with the guide post is formed in the middle of the top of the flow regulating valve, the guide post is embedded in the guide sleeve, the spring is sleeved on the guide post and the guide sleeve which are embedded together, one end of the spring is propped against the inner top of the nozzle frame, the other end of the spring is propped against the top of the flow regulating valve and is used for regulating the displacement of the flow regulating valve and resetting, a first sealing ring is arranged between the inner side wall of the flow regulating valve and the nozzle frame, the flow regulating valve can slide along the inner side wall of the nozzle frame through the first sealing ring, the ejector rod vertically penetrates through the hollow channel of the rotational flow valve core downwards, a second sealing ring is arranged between the ejector rod and the hollow channel, the tail end of the ejector rod is provided with a conical head matched with the outflow port, and under the driving of the flow regulating valve, the conical head at the tail end of the ejector rod is utilized to realize the regulation of the diameter section area of the outflow port hole of the nozzle body, namely the size of the through-flow sectional area is regulated, so that the spray flow of the spray head is regulated.
Furthermore, the outflow opening is of a horn-shaped structure.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the sectional area of the nozzle outflow opening can be automatically adjusted according to the spraying pressure, the automatic adjustment of the spraying flow is realized to meet the requirement of variable spraying, the constant atomization performance of the spray head and the basically unchanged droplet particle size distribution characteristic are kept, and the spray nozzle has practical application value.
Drawings
Fig. 1 is a schematic structural diagram of the adaptive stepless variable nozzle of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Referring to fig. 1, the adaptive stepless variable nozzle provided by the embodiment with the automatically adjustable aperture section of the outflow port includes a nozzle body 1, a nozzle holder 3, a spring 5, a flow regulating valve 6 and a swirl valve core 10; the nozzle body 1 is in threaded connection with the nozzle frame 3, the swirl valve core 10 is of a hollow structure and is arranged in the nozzle body 1, and a hollow channel of the swirl valve core corresponds to the outflow port 12 of the nozzle body 1 and is positioned on the same axis; one side of the nozzle holder 3 is provided with a water inlet connector 2, the water inlet connector 2 is close to the threaded connection part of the nozzle holder 3 and the nozzle body 1, the middle position of the inner top of the nozzle holder 3 is provided with a guide post 4 which has the same axis with an outflow port 12 and is used for guiding the movement of a flow regulating valve 6, the flow regulating valve 6 is arranged in the nozzle holder 3, a guide sleeve 11 matched with the guide post 4 is formed in the middle of the top of the flow regulating valve 6, the guide post 4 is embedded in the guide sleeve 11, a spring 5 is sleeved on the guide post 4 and the guide sleeve 11 which are embedded together, one end of the spring 5 is abutted against the inner top of the nozzle holder 3, the other end of the spring is abutted against the top of the flow regulating valve 6 and is used for adjusting the displacement of the flow regulating valve 6 and resetting, a first sealing ring 7 is arranged between the flow regulating valve 6 and the inner side wall of the nozzle holder 3, and the flow regulating valve 6, the middle position of the bottom of the flow regulating valve 6 is provided with an ejector rod 8 which is coaxial with the outflow port 12, the ejector rod 8 vertically penetrates through a hollow channel of the rotational flow valve core 10 downwards, a second sealing ring 9 is arranged between the ejector rod 8 and the hollow channel, the tail end of the ejector rod 8 is a conical head matched with the outflow port 12, and the outflow port 12 is designed to be of a horn-shaped structure.
When the sprayer works, the flow regulating valve 6 can automatically slide along the inner side wall of the sprayer frame 3 according to the spraying pressure, so as to drive the ejector rod 8 to move, and the conical head at the tail end of the ejector rod 8 is utilized to realize the regulation of the aperture sectional area (namely the size of the through-flow sectional area) of the outflow port 12 of the nozzle body 1, so that the spraying amount of the sprayer is regulated.
Assuming that the force of the fluid acting on the flow rate adjustment valve 6 is balanced with the spring force at a certain spray pressure, the displacement of the flow rate adjustment valve 6 and the change amount of the spray pressure have the following relationship when the spring is linear:
Δx＝ΔPπ(R2-r2)/k
wherein Δ x is the displacement of the flow control valve 6; Δ P is the amount of change in spray pressure; r is the diameter of the inner wall of the nozzle frame; r is the diameter of the ejector rod; k is the elastic coefficient of the spring; and pi is the circumferential ratio.
When the spraying pressure is increased, the flow regulating valve 6 drives the ejector rod 8 to move upwards, the sectional area of the outflow port is increased, and the spraying flow is increased; when the spraying pressure is reduced, the flow regulating valve 6 drives the ejector rod 8 to move downwards, the sectional area of the outflow port is reduced, and the flow is reduced.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921216936.2U CN210522837U (en) | 2019-07-30 | 2019-07-30 | Self-adaptive stepless variable nozzle with automatically adjustable orifice cross section of outflow opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921216936.2U CN210522837U (en) | 2019-07-30 | 2019-07-30 | Self-adaptive stepless variable nozzle with automatically adjustable orifice cross section of outflow opening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210522837U true CN210522837U (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921216936.2U Expired - Fee Related CN210522837U (en) | 2019-07-30 | 2019-07-30 | Self-adaptive stepless variable nozzle with automatically adjustable orifice cross section of outflow opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210522837U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328068A (en) * | 2019-07-30 | 2019-10-15 | 华南农业大学 | A kind of self-adjustable adaptive stepless variable spray head in outflow port aperture section |
| CN113102150A (en) * | 2021-05-21 | 2021-07-13 | 宜昌四陵塑料制品有限责任公司 | Plastic tubing inner wall sprays paint and uses shower nozzle structure |
| CN114798204A (en) * | 2022-04-29 | 2022-07-29 | 遵义师范学院 | an atomizing nozzle |
-
2019
- 2019-07-30 CN CN201921216936.2U patent/CN210522837U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328068A (en) * | 2019-07-30 | 2019-10-15 | 华南农业大学 | A kind of self-adjustable adaptive stepless variable spray head in outflow port aperture section |
| CN113102150A (en) * | 2021-05-21 | 2021-07-13 | 宜昌四陵塑料制品有限责任公司 | Plastic tubing inner wall sprays paint and uses shower nozzle structure |
| CN113102150B (en) * | 2021-05-21 | 2023-07-07 | 宜昌四陵塑料制品有限责任公司 | Spray nozzle structure for spraying paint on inner wall of plastic pipe |
| CN114798204A (en) * | 2022-04-29 | 2022-07-29 | 遵义师范学院 | an atomizing nozzle |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 Termination date: 20210730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |