CN210653656U - Plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve - Google Patents
Plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve Download PDFInfo
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- CN210653656U CN210653656U CN201921638234.3U CN201921638234U CN210653656U CN 210653656 U CN210653656 U CN 210653656U CN 201921638234 U CN201921638234 U CN 201921638234U CN 210653656 U CN210653656 U CN 210653656U
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Abstract
The utility model discloses a plant protection unmanned aerial vehicle spray pipeline emptying valve, which relates to the technical field of plant protection unmanned aerial vehicles and solves the problems that the air in the plant protection unmanned aerial vehicle spray pipeline is polluted by pesticide and the pesticide is wasted by manual discharge, the utility model comprises a tubular valve body, a flow channel is arranged in the valve body, an emptying pipe communicated with the flow channel is vertically connected on the valve body, the tail end of the emptying pipe is provided with an end panel, an outlet pipe is arranged in the emptying pipe at the axis, one end of the outlet pipe close to the flow channel is connected with a floating ball, the other end passes through the center of the end panel to the outside, the inner diameter of the emptying pipe, the floater external diameter all is the same with the runner diameter, and the length of evacuation pipe is no less than the floater external diameter, has seted up a plurality of long banding gas outlets along its axis direction on the outlet duct pipe wall, and the distance that the terminal of gas outlet near end panel one side is greater than the perpendicular distance between end panel and the runner axis with the floater center.
Description
Technical Field
The utility model relates to a plant protection unmanned aerial vehicle technical field, more specifically relate to a plant protection unmanned aerial vehicle liquid spray pipeline blowoff valve.
Background
Along with the progress of science and technology, unmanned aerial vehicle is widely used in more fields, wherein plant protection unmanned aerial vehicle is the unmanned aerial vehicle who is used for agriculture and forestry plant protection operation specially. Plant protection unmanned aerial vehicle mainly carries out the pesticide in the aspect of the agriculture and forestry plant protection operation and sprays, and it is equipped with the spray tank and passes through the pressure nozzle of hydrojet pipeline and spray tank intercommunication on unmanned aerial vehicle, and the liquid medicine in the spray tank carries out the pressurization through the transfer pump and carries to pressure nozzle department blowout.
The problem exists on unmanned aerial vehicle is used to current pressure nozzle, and after the liquid medicine in the liquid medicine case sprayed, the transfer pump can idle owing to inertia, and then can get into a large amount of air in the hydrojet pipeline, and this will lead to influencing pressure nozzle's normal work after adding the liquid medicine once more, so must discharge the air in the hydrojet pipeline earlier. The existing evacuation mode is to manually unscrew the pressure nozzle and then start the infusion pump to deliver the liquid medicine to the liquid spraying pipeline to discharge air. This way of emptying has drawbacks, namely: the hand part is easily infected with the residual pesticide liquid in the spray liquid pipeline by manually unscrewing the pressure nozzle; meanwhile, unscrewing the pressure nozzle and discharging air by using the input of the liquid medicine may cause the liquid medicine to leak from the end of the liquid spraying pipeline, resulting in waste of the liquid medicine.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: adopt the hand that manual emission leads to be infected with the pesticide and the extravagant problem of pesticide in order to solve the air in the plant protection unmanned aerial vehicle hydrojet pipeline, the utility model provides a plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
the utility model provides a plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve, including pipy valve body, the inside runner that is of valve body, the vertically is connected with the evacuation pipe with the runner intercommunication on the valve body, the evacuation pipe end is provided with the end panel, the evacuation intraductal portion is provided with the outlet duct in axis department, the one end that the outlet duct is close to the runner is connected with the floater, the other end passes end panel center to outside, the evacuation pipe internal diameter, the floater external diameter all is the same with the runner diameter, the length of evacuation pipe is not less than the floater external diameter, a plurality of long banding gas outlets have been seted up along its axis direction on the outlet duct pipe wall, the terminal of gas outlet near end panel one side is greater than the perpendicular distance.
Furthermore, a choke tube communicated with the flow channel is vertically connected to the valve body on one side of the emptying tube close to the outlet of the flow channel, a cylindrical choke floating block is arranged inside the choke tube, the inner diameter of the choke tube and the outer diameter of the choke floating block are the same as the diameter of the flow channel, the length of the choke tube is not less than that of the choke floating block, the end face of the choke floating block on one side close to the flow channel is a hemispherical surface, and a clamping block is arranged on the inner wall of the end of the choke tube.
Furthermore, a sealing strip which extends from the outer wall of one side of the choke floating block to the spherical surface of the tail end and then extends from the spherical surface of the tail end to the outer wall of the other side of the choke floating block is embedded on the outer wall of the choke floating block, and the sealing strip can be in sealing contact with the inner wall of the choke pipe and the inner wall of the flow channel.
Furthermore, the length of the air outlet is smaller than that of the air outlet pipe, and a distance is reserved between the tail end of one side, close to the floating ball, of the air outlet pipe and the tail end of the side, close to the floating ball, of the air outlet pipe.
Furthermore, a sealing sleeve sleeved on the air outlet pipe is arranged in the center of the outer side surface of the end panel.
Furthermore, the tail end of the emptying pipe extends towards the outer side of the end face plate and a liquid collecting cavity located on one side of the end face plate is formed in the emptying pipe, and a liquid discharging hole with a plug is formed in the emptying pipe, close to the end face plate, of the liquid collecting cavity.
Furthermore, a buffering rectification net is arranged in the runner on one side, close to the runner inlet, of the floating ball.
The utility model has the advantages as follows:
the utility model provides an emptying valve can come automatic evacuation of carrying out the air through liquid buoyancy according to the inside state of runner. Compared with the existing manual emptying, the pressure nozzle does not need to be disassembled, and the problems of pesticide contamination and pesticide waste are avoided. Meanwhile, the emptying valve can realize automatic air emptying by utilizing a buoyancy principle and a pure physical structure without any control structure, and has a simple and reliable structure.
Drawings
Fig. 1 is a schematic structural view (empty state) of the present invention;
FIG. 2 is a schematic structural view (liquid flow state) of the present invention;
reference numerals: 1-a liquid collecting cavity, 2-a sleeve, 3-a plug, 4-a liquid discharging hole, 5-an emptying pipe, 6-a flow channel, 7-a valve body, 8-a buffer rectifying net, 9-an end panel, 10-an air outlet pipe, 11-an air outlet, 12-a floating ball, 13-a clamping block, 14-an air blocking pipe, 15-a sealing strip and 16-an air blocking floating block.
Detailed Description
For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.
Example 1
The utility model provides a plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve, including pipy valve body 7, 7 inside runners 6 that are of valve body, the vertically is connected with the evacuation pipe 5 with 6 intercommunications of runners on the valve body 7, 5 ends of evacuation pipe are provided with end panel 9, 5 inside outlet duct 10 that are provided with in axis department of evacuation pipe, the one end that outlet duct 10 is close to runners 6 is connected with floater 12, the other end passes end panel 9 center to outside, 5 internal diameters of evacuation pipe, floater 12 external diameter all is the same with 6 diameters of runners, the length of evacuation pipe 5 is not less than floater 12 external diameter, a plurality of long banding gas outlets 11 have been seted up along its axis direction on the 10 pipe wall of outlet duct, the distance that the terminal of gas outlet 11 near end panel 9 one side is greater than the perpendicular distance between end panel 9 and the 6 axis.
The working principle is as follows: the state of the evacuation valve when normally installed is as shown in the attached drawing, the flow channel 6 is horizontal, the evacuation pipe 5 is vertical and upward, and the flow channel 6 in the valve body 7 provides a circulating channel for the liquid medicine. The state of the emptying valve when the unmanned aerial vehicle normally sprays the liquid medicine is shown in attached drawing 2, and the state of the emptying valve when the liquid medicine is completely sprayed is shown in attached drawing 1.
When the liquid medicine is sprayed, the liquid medicine in the flow channel 6 flows out and air enters, the floating ball 12 loses buoyancy and falls, and the whole air outlet pipe 10 falls downwards into the emptying pipe 5. At this time, because the distance between the end of the air outlet 11 close to one side of the end panel 9 and the center of the floating ball 12 is greater than the vertical distance between the end panel 9 and the axis of the flow channel 6, the top of the air outlet 11 is higher than the end panel 9 and is communicated with the outside, the inside of the emptying pipe 5 and the flow channel 6 are communicated with the outside through the air outlet 11, and the inside of the flow channel 6 is filled with air. After the liquid medicine is added again, the external infusion pump is started, the liquid medicine enters the flow channel 6 again and extrudes air, and the air is gradually discharged to the outside through the air outlet 11 after being extruded. When the liquid medicine flows to the emptying pipe 5 along the flow passage 6, the floating ball 12 is acted by the buoyancy force to gradually rise along the liquid medicine level, and the residual air is gradually discharged to the outside through the air outlet 11 along with the rising of the liquid medicine level. When the floating ball 12 rises to the highest point, namely the top of the floating ball 12 contacts with the end panel 9, at the moment, the air outlet pipe 10 extends out of the end panel 9 completely, and the air in the flow channel 6 is discharged completely. At the moment, the inside and the environment of the whole emptying pipe 5 and the flow channel 6 are sealed through the end panel 9 and the floating ball 12, so that the emptying valve is in a closed state, and the pressure nozzle can perform normal liquid medicine spraying.
It should be noted that, because the floating ball 12 does not have a sealing function on the flow channel 6 when falling down, and then the air fills the whole flow channel 6 on both sides of the floating ball 12, and the liquid medicine flows in only from the flow channel 6 on one side of the floating ball 12 when flowing in again, most of the air on the other side of the floating ball 12 far from the floating ball 12 is squeezed by the liquid flowing in, and cannot be discharged from the air outlet pipe 10 in the evacuation pipe 5. Therefore, the evacuation valve in this embodiment can only be disposed at the end of the spray line, i.e., near the pressure nozzle. Thus, air is substantially only present in the flow channel 6 on the side of the floating ball 12, so that when the liquid medicine flows in again, air can be substantially completely discharged through the air outlet tube 10. The floating ball 12 and the air outlet pipe 10 are both made of light materials which can float on the liquid medicine, such as light plastics; meanwhile, the floating ball 12 can be hollow or solid.
The utility model provides an emptying valve can come automatic evacuation of carrying out the air through liquid buoyancy according to the inside state of runner. Compared with the existing manual emptying, the pressure nozzle does not need to be disassembled, and the problems of pesticide contamination and pesticide waste are avoided. Meanwhile, the emptying valve can realize automatic air emptying by utilizing a buoyancy principle and a pure physical structure without any control structure, and has a simple and reliable structure.
Example 2
The embodiment is improved on the basis of embodiment 1:
the valve body 7 of the emptying pipe 5 close to the outlet side of the flow channel is vertically connected with an air blocking pipe 14 communicated with the flow channel, a cylindrical air blocking floating block 16 is arranged in the air blocking pipe 14, the inner diameter of the air blocking pipe 14 and the outer diameter of the air blocking floating block 16 are the same as the diameter of the flow channel, the length of the air blocking pipe 14 is not less than the length of the air blocking floating block 16, the end face of the air blocking floating block 16 close to the flow channel is a hemispherical surface, and a clamping block 13 is arranged on the inner wall of the end of the air blocking pipe 14.
The structure of the evacuation valve in embodiment 1 has a limitation that the floating ball 12 inside the evacuation valve does not have the function of closing the flow passage 6, and further, the evacuation valve can only be arranged at the end of the liquid spraying pipeline close to the pressure nozzle, which may affect the installation of the pressure nozzle. Therefore, in order to solve this problem, the present embodiment makes an improvement in the closed structure of the flow path 6:
the choke tube 14 and the choke float 16 form a choke structure for closing the flow passage 6, and as shown in the drawing, when the liquid spraying is nearly completed, the liquid medicine in the flow passage 6 gradually flows through the choke float 16 and flows out. When the last part of the remaining liquid medicine in the flow passage 6 flows through the choke float 16, the choke float 16 loses its buoyancy and falls down, thereby closing the flow passage 6, and air can only exist in the flow passage 6 on the side of the choke float 16. And because the choke floating block 16 is adjacent to the floating ball 12, namely the tail end of the side of the air can only exist near the floating ball 12 at most, the air can be completely discharged after being fed again.
The above improved structure of the gas barrier makes the evacuation valve in this embodiment no longer limited by the installation position, and can be installed at any position of the liquid injection pipeline.
However, it should be noted that the installation distance between the choke float 16 and the floating ball 12 should not be too large, because there is a portion of air in the flow passage 6 between the choke float 16 and the floating ball 12, and if the installation distance between the choke float 16 and the floating ball 12 is too large, the amount of air is large, and it is difficult to completely exhaust the air. When the installation distance between the air blocking floating block 16 and the floating ball 12 is small, a small amount of air in the air blocking floating block can be completely exhausted, because when the liquid medicine is input again, the liquid medicine is filled in the cross section of the flow passage 6, the liquid medicine firstly impacts the floating ball 12, and then the liquid flow is broken to provide a passage for the air between the floating block and the floating ball 12 to circulate to the emptying pipe 5. If the installation distance between the choke floating block 16 and the floating ball 12 is too large, the liquid flow is crushed and then gathers again to fill the cross section of the flow channel 6, and the air in the flow channel 6 far away from the floating ball 12 loses the channel for flowing to the emptying pipe 5, so that the air cannot be discharged.
Example 3
The embodiment is improved on the basis of the above embodiment:
the outer wall of the choke floating block 16 is embedded with a sealing strip 15 which extends from the outer wall of one side to the spherical surface of the tail end and then extends from the spherical surface of the tail end to the outer wall of the other side, and the sealing strip 15 can be in sealing contact with the inner wall of the choke tube 14 and the inner wall of the flow channel 6. The sealing strip 15 further enhances the sealing effect of the choke float 16 on the flow channel 6.
The length of the air outlet 11 is smaller than that of the air outlet pipe 10, and a distance is reserved between the tail end of the air outlet 11 close to one side of the floating ball 12 and the tail end of the air outlet pipe 10. Because the diameter of the floating ball 12 is the same as that of the emptying pipe 5, a distance is set between the end of the side, close to the floating ball 12, of the air outlet 11 and the end of the side of the air outlet pipe 10, when the floating ball 12 is not completely floated to be in contact with the end panel 9 when the liquid medicine is introduced again for floating, the air outlet is completely extended into the inner part and the outer side of the end panel 9, as shown in the attached drawing 2, a part of air is remained in the space between the floating ball 12 and the end panel 9. This part of air is used for preventing that the liquid level of liquid medicine from continuing to rise, and then avoids making liquid medicine level produce undulant drive floater 12 and outlet duct 10 ups and downs and make unexpected the upwards spill through gas outlet 11 of making liquid medicine in the liquid medicine transportation process, unmanned aerial vehicle flight in-process.
The center of the outer surface of the end panel 9 is provided with a sealing sleeve 2 sleeved on the air outlet pipe 10. The inner wall of the sleeve 2 is tightly attached to the outer wall of the air outlet pipe 10, the contact area of the sleeve 2 and the outer wall of the air outlet pipe 10 is increased, and the sealing of the air outlet 11 when the air outlet pipe 10 floats is further enhanced.
The tail end of the emptying pipe 5 extends towards the outer side of the end plate 9 and is internally provided with a liquid collecting cavity 1 positioned on one side of the end plate 9, and a liquid discharging hole 4 with a plug 3 is arranged on the emptying pipe 5 of the liquid collecting cavity 1 close to the end plate 9. When the liquid medicine flows into runner 6 again, because the power of outside transfer pump, the liquid medicine can produce the impact when reacing floater 12 department, and then some liquid medicine can upwelling and upwards leak through the air outlet, so upwards extend emptying pipe 5 and form collecting chamber 1, can collect the liquid medicine of upwards leaking, then can discharge to outside container in through outage 4, then can use once more.
A buffer rectifier net 8 is arranged in the runner 6 at one side of the floating ball 12 close to the inlet of the runner 6. Due to the power of the external infusion pump, the liquid medicine has certain momentum and can impact the floating ball 12, and the floating ball 12 can not float easily at the first time. Therefore, the momentum of the liquid medicine can be reduced to a certain extent through the buffer rectifier net 8, and the impact on the floating ball 12 is reduced.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve, includes pipy valve body (7), and valve body (7) are inside to be runner (6), its characterized in that: the vertical emptying pipe (5) communicated with the flow channel (6) is connected to the valve body (7), the end of the emptying pipe (5) is provided with an end panel (9), an air outlet pipe (10) is arranged in the emptying pipe (5) at the axis, one end, close to the flow channel (6), of the air outlet pipe (10) is connected with a floating ball (12), the other end penetrates through the center of the end panel (9) to the outside, the inner diameter of the emptying pipe (5), the outer diameter of the floating ball (12) is identical to the diameter of the flow channel (6), the length of the emptying pipe (5) is not smaller than the outer diameter of the floating ball (12), a plurality of long strip-shaped air outlets (11) are formed in the pipe wall of the air outlet pipe (10) along the axis direction of the air outlet pipe, and the distance between the tail end, close to one side of the end panel (9), of the air.
2. The plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve of claim 1, characterized in that: the air blocking pipe (14) communicated with the flow channel (6) is vertically connected to the valve body (7) on one side, close to the outlet of the flow channel (6), of the emptying pipe (5), a cylindrical air blocking floating block (16) is arranged inside the air blocking pipe (14), the inner diameter of the air blocking pipe (14) and the outer diameter of the air blocking floating block (16) are the same as the diameter of the flow channel (6), the length of the air blocking pipe (14) is not smaller than that of the air blocking floating block (16), the end face, close to the flow channel (6), of the air blocking floating block (16) is a hemispherical face, and a clamping block (13) is arranged on the inner wall of the end of the air blocking pipe (14).
3. The plant protection unmanned aerial vehicle spray line evacuation valve of claim 2, wherein: the outer wall of the air blocking floating block (16) is embedded with a sealing strip (15) which extends from the outer wall of one side to the spherical surface of the tail end and then extends from the spherical surface of the tail end to the outer wall of the other side, and the sealing strip (15) can be in sealing contact with the inner wall of the air blocking pipe (14) and the inner wall of the flow channel (6).
4. The plant protection unmanned aerial vehicle spray line blowoff valve of claim 1 or 2, wherein: the length of the air outlet (11) is less than that of the air outlet pipe (10), and a distance is reserved between the tail end of one side of the air outlet (11), which is close to the floating ball (12), and the tail end of the air outlet pipe (10).
5. The plant protection unmanned aerial vehicle spray line blowoff valve of claim 1 or 2, wherein: the center of the outer surface of the end panel (9) is provided with a sealing sleeve (2) sleeved on the air outlet pipe (10).
6. The plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve of claim 1, characterized in that: the tail end of the emptying pipe (5) extends towards the outer side of the end face plate (9) and forms a liquid collecting cavity (1) located on one side of the end face plate (9) in the emptying pipe, and a liquid discharging hole (4) with a plug (3) is formed in the emptying pipe (5) of the liquid collecting cavity (1) close to the end face plate (9).
7. The plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve of claim 1, characterized in that: a buffer rectification net (8) is arranged in the runner (6) at one side of the floating ball (12) close to the inlet of the runner (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921638234.3U CN210653656U (en) | 2019-09-29 | 2019-09-29 | Plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921638234.3U CN210653656U (en) | 2019-09-29 | 2019-09-29 | Plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve |
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| CN210653656U true CN210653656U (en) | 2020-06-02 |
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| CN201921638234.3U Active CN210653656U (en) | 2019-09-29 | 2019-09-29 | Plant protection unmanned aerial vehicle hydrojet pipeline blowoff valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525657A (en) * | 2019-09-29 | 2019-12-03 | 河南亿诺航空科技有限公司 | A kind of plant protection drone hydrojet pipeline evacuation valve |
-
2019
- 2019-09-29 CN CN201921638234.3U patent/CN210653656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525657A (en) * | 2019-09-29 | 2019-12-03 | 河南亿诺航空科技有限公司 | A kind of plant protection drone hydrojet pipeline evacuation valve |
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