In-greenhouse hanging type pesticide spraying device for asparagus disease and pest control and working method thereof

Abstract

The invention relates to a pesticide spraying device, in particular to an in-greenhouse hanging type pesticide spraying device for asparagus disease and pest control and a working method of the in-greenhouse hanging type pesticide spraying device. The device comprises a hanger rail, guide rails oppositely arranged on the two sides of the hanger rail, and a pesticide storage barrel moving on the top of the hanger rail through a driving mechanism. The hanger rail and the guide rail are both fixedly arranged at the bottom of the greenhouse roof and both penetrate through the multiple greenhouses arranged side by side. The side wall of the guide rail is provided with a wavy guide end; according to the in-greenhouse hanging type pesticide spraying device for asparagus disease and pest control and the working method of the in-greenhouse hanging type pesticide spraying device, through cooperation between a flow guide pipe and a swinging spray head, the flow guide pipe guides pesticide liquid sprayed out of the upward swinging spray head in the width direction of a greenhouse, so that the width of the pesticide spraying device is reduced, and the width of the pesticide spraying device can be smaller than the width of an inlet and an outlet of the greenhouse; the pesticide spraying device is matched with the hanger rail penetrating through the multiple greenhouses, so that the pesticide spraying device can quickly move in the multiple greenhouses, and pesticide can be conveniently and quickly sprayed to the multiple greenhouses.

Description

Technical Field

[0001] The invention relates to a spraying device, in particular to an in-shed hanging spraying device for preventing and controlling asparagus pests and diseases and a working method thereof. Background Art

[0002] Greenhouse asparagus cultivation is an efficient and controllable cultivation method, suitable for supplying the market in winter and early spring. The time for greenhouse asparagus cultivation is usually to raise seedlings in August and September and plant in October. In this way, it can be supplied to the market in winter and early spring to meet market demand.

[0003] Stem blight is a major threat in asparagus cultivation. Once it occurs, it is very difficult to treat, so prevention is key. Currently, prevention is mainly carried out by spraying pesticides regularly.

[0004] Since the interior of the greenhouse is a closed space, if manual spraying is used, people will easily inhale pesticides, posing a threat to their lives. Therefore, most of the current spraying equipment uses mechanical spraying instead of manual work. Since the greenhouse has a certain width, the current spraying equipment will be equipped with a long spraying pipe, the length of which is slightly shorter than the width of the greenhouse. By setting multiple nozzles on the long spraying pipe, the spraying range in a single movement process can be increased.

[0005] In some large-scale planting areas, multiple greenhouses are usually set up side by side, and the entrances and exits of multiple greenhouses are all in the same straight line. However, when the spraying equipment is equipped with a spraying pipe, the length of the spraying pipe will be greater than the width of the entrance and exit of the greenhouse, resulting in the spraying equipment being able to move only in a single greenhouse. When it is necessary to spray pesticides in other greenhouses, the spraying pipe needs to be disassembled and reassembled, making it difficult to spray pesticides in multiple greenhouses set up side by side at one time. Summary of the invention

[0006] The object of the present invention is to provide an in-shed hanging spraying device for controlling asparagus pests and diseases and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, one of the purposes of the present invention is to provide an indoor hanging spraying device for asparagus disease and insect pest control, comprising a hanging rail, guide rails opposite to the two sides of the hanging rail, and a medicine storage barrel moved on the top of the hanging rail by a driving mechanism; the hanging rail and the guide rail are both fixedly arranged at the bottom of the shed roof, and both pass through a plurality of sheds arranged side by side; the side wall of the guide rail has a wavy guide end.

[0008] A nozzle and a traction mechanism are rotatably arranged on both sides of the medicine storage barrel in the moving direction, wherein:

[0009] The traction mechanism is located on both sides of the medicine storage barrel and is arranged corresponding to the guide rail, and the traction mechanism is connected to the nozzle; when the traction mechanism moves, the wavy guide end of the side wall of the guide rail drives the nozzle to swing back and forth longitudinally through the traction mechanism;

[0010] A flow guiding mechanism is arranged above the reciprocating swinging area of ​​the nozzle, and the flow guiding mechanism comprises a flow guiding pipe and a pressurizing component for making one end of the flow guiding pipe in a negative pressure state and the other end in a positive pressure state.

[0011] The end of the guide tube in a negative pressure state faces the nozzle, and the end in a positive pressure state faces the side wall in the width direction of the greenhouse; when the nozzle swings upward, the guide tube uses the pressure difference to guide the liquid medicine sprayed through the nozzle in the width direction of the greenhouse.

[0012] As a further improvement of the technical solution, the top of the medicine storage barrel is provided with a top cover connected to the driving mechanism, and the bottom is provided with a bottom plate, and the bottom plate is fixedly connected to the top cover;

[0013] An air compressor is fixedly arranged at the bottom of the bottom plate, and the air compressor is connected to the medicine storage barrel through an air pipe, and is used to deliver compressed gas to the inside of the medicine storage barrel, so that high pressure is generated inside the medicine storage barrel;

[0014] A drug adding port for adding drug solution is arranged on one side of the drug storage barrel.

[0015] As a further improvement of the technical solution, the driving mechanism includes at least two rotating wheels, and the two rotating wheels are rotatably arranged on the top of the hanging rail; the same ends of the two rotating wheels are rotatably connected to a frame fixed on the top of the top cover;

[0016] A motor is arranged on the top of the top cover, and a belt is provided between the output end of the motor and the shafts at the ends of the two rotating wheels, so that the motor drives the rotating wheels to rotate.

[0017] As a further improvement of the technical solution, a drug delivery tube is provided at the drug storage barrel, and the drug delivery tube has three open connection ends, one of which is connected to the drug storage barrel; and the other two connection ends extend corresponding to the positions of the two nozzles;

[0018] One end of the nozzle is a rotating end; the inner diameter of the rotating end is consistent with the outer diameter of the connecting end, and the rotation of the nozzle is achieved by sleeve-arranging the rotating end on the outer ring of the connecting end;

[0019] The spraying end of the nozzle is arranged toward the width direction of the greenhouse.

[0020] As a further improvement of the technical solution, a plurality of triangular shaped convex plates are arranged in the end array of the guide rail, and the plurality of convex plates are interconnected so that the outer sides of the plurality of convex plates together form a wavy groove.

[0021] As a further improvement of the technical solution, the traction mechanism includes a driven rod and a mounting block fixedly arranged on the side wall of the top cover, and the top of the mounting block has a sliding surface parallel to the guide rail;

[0022] One end of the driven rod extends to the groove, and the other end is slidably connected to the sliding surface. When the driven rod moves, the driven rod reciprocates through the groove;

[0023] A return spring is arranged between one side of the driven rod and one end of the sliding surface to elastically connect the two, and is used to limit the driven rod to the depth of the groove when the return spring is not subjected to external force.

[0024] As a further improvement of the present technical solution, a traction member is further provided between the driven rod and the nozzle, for driving the nozzle to swing longitudinally when the driven rod moves; the traction member is a traction rod having one end rotationally connected to one side of the driven rod and the other end rotationally connected to one side of the nozzle.

[0025] As a further improvement of the present technical solution, the pressurizing component is an air tank fixedly arranged at the bottom of the base plate and connected to the air compressor; a pressure relief valve is arranged on one side of the air tank, which is used to release excess pressure when the pressure in the air tank exceeds a predetermined value; at the same time, the air tank is connected to an exhaust pipe, one end of the exhaust pipe extends to the guide pipe, and penetrates from the outer ring in the middle of the guide pipe into the interior of the guide pipe, so that positive pressure is formed at one end of the guide pipe and negative pressure is formed at the other end.

[0026] As a further improvement of the technical solution, a valve housing is provided in the middle of the exhaust pipe, a valve plate is longitudinally slidably provided in the valve housing, a connecting spring elastically connecting the top of the valve plate and the inner wall of the top of the valve housing is provided between the top of the valve plate and the inner wall of the top of the valve housing, and under normal conditions, the connecting spring pulls the valve plate upward;

[0027] The top of the valve plate is fixedly connected with a push rod that slides longitudinally through the valve housing, and the bottom of the driven rod is fixedly connected with a pressure rod located directly above the push rod. When the driven rod slides downward, the driven rod presses the push rod through the pressure rod, so that the push rod drives the valve plate to move downward.

[0028] The second object of the present invention is to provide a working method of a shed hanging spraying device for asparagus pest control, comprising the following steps:

[0029] S1. During the movement of the spraying device, the driven rod slides longitudinally back and forth on the surface of the sliding surface under the guidance of the top cover;

[0030] S2. When the driven rod moves toward the center of the spray device, the distance between the driven rod and the spray head becomes farther, so that the spray head is pulled upward by the traction member; when the driven rod moves toward the outer side and downward of the spray device, the distance between the driven rod and the spray head becomes closer, and the spray head is pushed downward by the traction member;

[0031] S3. When the nozzle swings upward, the liquid medicine sprayed by the nozzle will be sucked into the guide tube, and then sprayed out through the other end of the guide tube, so that the liquid medicine floats in the width direction of the greenhouse;

[0032] S4. The hanging rails are arranged to penetrate multiple greenhouses, so that the spraying device can shuttle between the multiple greenhouses through the hanging rails to spray the multiple greenhouses.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. In the in-shed hanging spraying device for asparagus pest control and its working method, the cooperation between the guide pipe and the swinging nozzle is utilized so that the guide pipe guides the liquid sprayed from the upward swinging nozzle in the width direction of the greenhouse, thereby reducing the width of the spraying device, making the width of the spraying device smaller than the width of the greenhouse entrance and exit, and cooperating with the hanging rails arranged through multiple greenhouses to realize the rapid movement of the spraying device in multiple greenhouses, thereby facilitating the rapid spraying of multiple greenhouses.

[0035] 2. In the indoor hanging spraying device for asparagus pest control and its working method, when the driven rod slides downward, the nozzle is in a downward swinging state. At this time, the driven rod will also press the valve plate downward through the pressure rod and the push rod, so that the valve plate blocks the gas in the exhaust pipe, thereby avoiding the phenomenon that the gas is discharged from the exhaust pipe when the nozzle swings downward, thereby saving gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0037] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0038] Figure 3 It is a structural schematic diagram of the driving mechanism of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the nozzle of the present invention;

[0040] Figure 5 It is a structural schematic diagram of the driven rod of the present invention;

[0041] Figure 6 It is a structural schematic diagram of the traction rod of the present invention;

[0042] Figure 7 It is a structural schematic diagram of the flow guiding mechanism of the present invention;

[0043] Figure 8 It is a structural schematic diagram of the valve plate of the present invention;

[0044] Fig. 9 It is a schematic diagram of the spraying range of the present invention.

[0045] The meaning of each number in the figure is:

[0046] 100, hanging rail; 101, first connector; 110, guide rail; 111, second connector; 112, groove;

[0047] 120, medicine storage barrel; 121, top cover; 122, bottom plate; 123, air compressor; 124, air pipe; 125, medicine adding port; 130, driving mechanism; 131, rotating wheel; 132, frame; 133, belt; 134, motor;

[0048] 140. Nozzle; 141. Drug delivery tube; 150. Flow guide mechanism; 151. Flow guide tube; 152. Exhaust pipe; 153. Gas storage tank; 154. Pressure relief valve; 155. Valve housing; 156. Valve plate; 157. Connecting spring; 158. Push rod; 159. Pressure rod; 160. Mounting block; 161. Sliding surface; 162. Follower rod; 163. Traction rod; 200. Roof. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] At present, the volume of the spraying equipment in the greenhouse is mostly set to be wider, so as to obtain a larger spraying range. For example, the Chinese patent with publication number CN111296133A discloses a greenhouse orchard pesticide delivery spraying device. The patent uses a transverse pipe (i.e., the spraying pipe described in the above background technology) to increase the number of water outlets (i.e., the nozzle 140 to be described below), but because the length of the transverse pipe is greater than the width of the greenhouse entrance and exit, the spraying equipment can only be moved in a single greenhouse, and after the spraying is completed in the greenhouse, it is difficult to quickly move to the next greenhouse that needs to be sprayed.

[0051] In order to reduce the occupation of ground space and improve the mobility of the equipment, the spraying device of the present invention adopts a hanging structure. Figure 1 and Figure 2 As shown, one of the purposes of the present invention is to provide an in-shed hanging spraying device for asparagus pest control, comprising a hanging rail 100, guide rails 110 arranged on both sides of the hanging rail 100, and a medicine storage barrel 120 that moves on the top of the hanging rail 100 through a driving mechanism 130. Among them, the lengths of the hanging rail 100 and the guide rail 110 are consistent with the total length of a plurality of greenhouses arranged side by side, that is, the hanging rail 100 and the guide rail 110 can both pass through a plurality of greenhouses arranged side by side, and the part that passes through the greenhouse is preferably the entrance and exit of the greenhouse, and of course it can also be other parts, which are specifically set according to the height of the greenhouse and the height of the entrance and exit. Next, the side wall of the guide rail 110 has a wavy guide end, which is used to drive the traction mechanism to be described below to move.

[0052] exist Figure 2 In the embodiment, the spray heads 140 are rotatably arranged on both sides of the medicine storage barrel 120 in the moving direction, the traction mechanism is arranged on both sides of the medicine storage barrel 120 and corresponds to the guide rail 110, and the traction mechanism is connected to the spray heads 140. Figure 2 The direction of the nozzle 140 in the state is taken as the standard. When the traction mechanism moves along the hanging rail 100, the wavy guiding end of the side wall of the guide rail 110 drives the nozzle 140 to swing back and forth longitudinally through the traction mechanism.

[0053] In addition, a flow guide mechanism 150 is arranged above the reciprocating swinging area of ​​the nozzle 140, and the flow guide mechanism 150 includes a flow guide pipe 151 and a pressurizing component for making one end of the flow guide pipe 151 in a negative pressure state and the other end in a positive pressure state; wherein, the end of the flow guide pipe 151 in a negative pressure state faces the nozzle 140, and the end in a positive pressure state faces the side wall in the width direction of the greenhouse. In this way, when the nozzle 140 swings upward, the flow guide pipe 151 uses the effect of pressure difference to guide the liquid sprayed by the nozzle 140 to the width direction of the greenhouse.

[0054] Among them, the width direction of the greenhouse is Figure 2 The direction indicated by the arrow W.

[0055] The spraying device of the present invention utilizes the cooperation between the guide pipe 151 and the swinging nozzle 140, so that the guide pipe 151 guides the liquid sprayed by the upward swinging nozzle 140 in the width direction of the greenhouse, thereby reducing the width of the spraying device, making the width of the spraying device smaller than the width of the greenhouse entrance and exit, and cooperating with the hanging rail 100 set through multiple greenhouses to realize the rapid movement of the spraying device in multiple greenhouses, thereby facilitating the rapid spraying of multiple greenhouses.

[0056] In the above-mentioned embodiment, the hanging rail 100 and the guide rail 110 are both hung at the bottom of the ceiling 200. Figure 2As shown, a hook in the shape of a "C" is provided at the bottom of the hanging rail 100, and a first connector 101 is provided between the bottom of the roof 200 and the top of the hook to fix the two together. Similarly, a second connector 111 is also provided between the top of the guide rail 110 and the bottom of the roof 200 to fix the two together. In this way, by providing the first connector 101 and the second connector 111, the hanging rail 100 and the guide rail 110 are hung at the bottom of the roof 200.

[0057] like Figure 2 As shown, a top cover 121 connected to the driving mechanism 130 is provided on the top of the medicine storage barrel 120, and a bottom plate 122 is provided at the bottom. The bottom plate 122 and the top cover 121 are fixedly connected by a connecting plate. Figure 3 Viewed from the side of the middle top cover 121, the connecting plate is located on the side wall of the medicine storage barrel 120, the top of the connecting plate is fixedly connected to the top cover 121, and the bottom is fixedly connected to the bottom plate 122. In this way, when the driving mechanism 130 is hung on the top of the hanging rail 100, the medicine storage barrel 120 is lifted up by the top cover 121 and the bottom plate 122. In addition, an air compressor 123 is fixedly provided at the bottom of the bottom plate 122, and the air compressor 123 is connected to the medicine storage barrel 120 through an air pipe 124, and is used to transport compressed gas to the inside of the medicine storage barrel 120, so that high pressure is generated inside the medicine storage barrel 120, thereby spraying the medicine liquid inside the medicine storage barrel 120 through the nozzle 140. In addition, a dosing port 125 (such as a nozzle 140) for adding medicine liquid is provided on one side of the medicine storage barrel 120. Figure 4 shown).

[0058] The driving mechanism 130 can be manually driven or electrically driven. Since the use environment of the spraying device of the present invention is inside a greenhouse, the present invention preferably adopts an electrically driven mode. The driving mechanism 130 includes at least two rotating wheels 131, and the two rotating wheels 131 are rotatably arranged on the top of the hanging rail 100, and are used to drive the medicine storage barrel 120 to move through the top cover 121. Specifically, as Figure 3 In the illustrated embodiment, the hanging rail 100 is in a transverse cylindrical state, and the interior can be a hollow structure or a solid structure, which is adjusted accordingly according to the length of the hanging rail 100. The outer ring of the rotating wheel 131 located at the top of the hanging rail 100 is provided with a depression corresponding to the shape of the outer ring of the hanging rail 100. The depression can limit the rotating wheel 131 so that the rotating wheel 131 will not be radially displaced (i.e., in the width direction of the hanging rail 100) at the top of the hanging rail 100. Next, the same ends of the two rotating wheels 131 are connected to a frame 132 fixed to the top of the top cover 121 for rotation. The frame 132 is at Figure 3 The shape in the figure is a "U" shape with the opening downwards. Of course, it can also be other shapes, which will not be described in detail in the present invention.

[0059] At this time, the movement of the medicine spraying device of the present invention can be achieved by adopting the above structure, that is, applying external force to the medicine storage barrel 120, such as pushing it by hand, to achieve the movement of the medicine spraying device. However, in order to achieve electric drive, the present invention sets a motor 134 on the top of the top cover 121, and sets a belt 133 between the output end of the motor 134 and the shafts at the ends of the two rotating wheels 131. In this way, the automatic rotation of the rotating wheels 131 can be achieved. When the rotating wheels 131 rotate, the rotating wheels 131 drive the medicine storage barrel 120 to move through the frame 132 and the top cover 121.

[0060] The spray head 140 is rotatably arranged on both sides of the medicine storage barrel 120 to realize its longitudinal reciprocating swing. Figure 4 In the illustrated embodiment, the drug delivery tube 141 is a three-way structure, that is, the drug delivery tube 141 has three open connection ends, one of which is connected to the drug storage barrel 120, and the connection position is preferably at the bottom of the drug storage barrel 120, so as to prevent the air inside the drug storage barrel 120 from being discharged through the drug delivery tube 141. The other two connection ends extend to the two side walls of the drug storage barrel 120, that is, they extend to the positions corresponding to the two nozzles 140; one end of the nozzle 140 is a rotating end; the inner circle diameter of the rotating end is consistent with the outer circle diameter of the connecting end, and the rotation of the nozzle 140 is achieved by sleeve-mounting the rotating end on the outer circle of the connecting end. Alternatively, the outer circle diameter of the rotating end is consistent with the inner circle diameter of the connecting end, and the rotation of the nozzle 140 can also be achieved by inserting the rotating end into the inner circle of the connecting end.

[0061] At the same time, the spraying end of the spray head 140 is arranged toward the width direction of the greenhouse. When the spray head 140 is not swinging, that is, in a normal state, the spraying end of the spray head 140 is tilted downward to spray the area obliquely below the spraying device.

[0062] like Figure 3 As shown, a plurality of triangular convex plates are arranged in an array at the end of the guide rail 110 , and the plurality of convex plates are connected to each other so that the outer sides of the plurality of convex plates together form a wave-shaped groove 112 .

[0063] The traction mechanism has a driven rod 162 that can follow the wavy guide end of the guide rail 110 to move accordingly. Figure 5In the embodiment shown, the traction mechanism includes a mounting block 160 fixedly mounted on the side wall of the top cover 121, and the top of the mounting block 160 has a sliding surface 161 parallel to the guide rail 110; then, one end of the driven rod 162 extends to the groove 112, and the other end is slidably connected to the sliding surface 161, for example, a sliding groove is provided on the surface of the sliding surface 161, and a slider is provided at the end of the driven rod 162, and the sliding connection between the two is achieved through the cooperation of the slider and the sliding groove. In this way, when the spraying device moves, the driven rod 162 will reciprocate through the groove 112. In addition. A reset spring that elastically connects the two is provided between one side of the driven rod 162 and one end of the sliding surface 161, which is used to limit the driven rod 162 to the depth of the groove 112, that is, the concave part of the groove 112 when the reset spring is not subjected to external force.

[0064] In addition, a traction member is provided between the driven rod 162 and the nozzle 140, which is used to drive the nozzle 140 to swing longitudinally when the driven rod 162 moves. Figure 6 In the illustrated embodiment, the traction member is a traction rod 163 having one end rotatably connected to one side of the driven rod 162 and the other end rotatably connected to one side of the spray head 140. Alternatively, in other embodiments, the traction member is a flexible traction rope having one end fixedly connected to the driven rod 162 and the other end fixedly connected to the spray head 140. In this way, when the driven rod 162 is moving, the driven rod 162 can drive the spray head 140 to swing longitudinally through the traction rod 163 or the flexible traction rope.

[0065] like Figure 7 As shown, the pressurizing component is an air tank 153 fixedly arranged at the bottom of the base plate 122 and connected to the air compressor 123; a pressure relief valve 154 is arranged on one side of the air tank 153, which is used to release excess pressure when the pressure in the air tank 153 exceeds a predetermined value; at the same time, the air tank 153 is connected to an exhaust pipe 152, one end of the exhaust pipe 152 extends to the guide pipe 151, and penetrates from the outer circle in the middle of the guide pipe 151 to the inside of the guide pipe 151. When the compressed gas in the air tank 153 is sprayed into the guide pipe 151 at a high speed through the exhaust pipe 152, a jet will be formed at the outlet of the exhaust pipe 152, thereby generating a suction flow, so that the air around the outlet of the exhaust pipe 152 is continuously sucked away, so that the pressure in the guide pipe 151 drops to below the atmospheric pressure; that is, a positive pressure is formed at one end of the guide pipe 151, and a negative pressure is formed at the other end. Furthermore, the exhaust pipe 152 is preferably made of metal material, which makes the exhaust pipe 152 have strong hardness and thus has support. By connecting the air guide pipe 151 with the exhaust pipe 152, the air guide pipe 151 no longer needs to be provided with a separate fixing structure. Figure 8 The binding strap (not numbered in the figure) on the outer circle of the air guide pipe 151 can fix the exhaust pipe 152 and the air guide pipe 151 together.

[0066] Furthermore, when the nozzle 140 swings upward, the guide tube 151 is located within the spraying range of the nozzle 140 , so that the guide tube 151 absorbs the liquid medicine.

[0067] Working principle:

[0068] First, liquid medicine is added to the medicine storage barrel 120 through the medicine adding port 125. After the liquid medicine is added, the medicine storage barrel 120 and the top cover 121 are driven to move by the driving mechanism 130, and the air compressor 123 is started to deliver compressed gas to the medicine storage barrel 120, forcing the liquid medicine in the medicine storage barrel 120 to be sprayed out through the nozzle 140.

[0069] During the movement, the driven rod 162 is guided by the top cover 121 to slide back and forth longitudinally on the surface of the sliding surface 161. Fig. 9 The state direction of the central spray device is taken as the standard. When the driven rod 162 moves toward the upper center of the spray device, the distance between the driven rod 162 and the spray head 140 becomes farther, thereby pulling the spray head 140 to swing upward through the traction member; when the driven rod 162 moves toward the outer and lower side of the spray device, the distance between the driven rod 162 and the spray head 140 becomes closer, and at this time, the spray head 140 is pushed to swing downward through the traction member, thereby realizing reciprocating swinging.

[0070] At the same time, part of the compressed gas in the air compressor 123 will also enter the air storage tank 153, and then be ejected into the guide tube 151 through the exhaust pipe 152, so that negative pressure is generated inside the guide tube 151, specifically, one end close to the nozzle 140 is at negative pressure, and the other end is at positive pressure.

[0071] Then, in Fig. 9 In the figure, the nozzle 140 on the left is in a downward swinging state, and the spraying area a generated by the nozzle 140 on the left is close to the spraying device, so as to spray the area near the spraying device. The nozzle 140 on the right is in an upward swinging state. Since the end of the guide tube 151 close to the nozzle 140 is in a negative pressure state, when the nozzle 140 swings upward, the liquid medicine sprayed by the nozzle 140 will be sucked into the guide tube 151, and then sprayed out through the other end of the guide tube 151. In this process, since there is a flow of compressed gas in the guide tube 151, the compressed gas will accelerate the flow rate of the liquid medicine in the guide tube 151, so that the liquid medicine can float in the width direction of the greenhouse.

[0072] When spraying of one of the greenhouses is completed, the movement of the spraying device is continued to be controlled, and the spraying device can be moved to the next greenhouse through the hanging rail 100, thereby achieving spraying of multiple greenhouses.

[0073] It should be noted that the guide tube 151 of the present invention is not limited to a horizontal setting, and can be adjusted according to the actual width of the greenhouse. For example, when the greenhouse is wider, the end of the guide tube 151 away from the nozzle 140 is tilted upward so that the liquid medicine can obtain a longer floating distance; otherwise, the end of the guide tube 151 away from the nozzle 140 is tilted downward.

[0074] In addition, considering that the nozzle 140 does not need to guide the liquid medicine through the guide pipe 151 during the downward swing, in order to save compressed gas, Figure 8 As shown, the present invention is provided with a valve housing 155 in the middle of the exhaust pipe 152 which does not affect the gas flow in the exhaust pipe 152. At the same time, a valve plate 156 is longitudinally slidably provided in the valve housing 155. When the valve plate 156 slides downward, the valve plate 156 blocks the exhaust pipe 152, so that the gas in the exhaust pipe 152 cannot flow. When the valve plate 156 slides upward, the valve plate 156 is separated from the exhaust pipe 152, and the gas in the exhaust pipe 152 can flow normally. At the same time, a connecting spring 157 is provided between the top of the valve plate 156 and the inner wall of the top of the valve housing 155 to elastically connect the two. Under normal conditions, the connecting spring 157 pulls the valve plate 156 upward. At the same time, a top rod 158 that longitudinally slides through the valve housing 155 is fixedly connected to the top of the valve plate 156, and a pressure rod 159 located directly above the top rod 158 is fixedly connected to the bottom of the driven rod 162. When the driven rod 162 slides downward, the driven rod 162 presses the push rod 158 through the pressure rod 159, so that the push rod 158 drives the valve plate 156 to move downward.

[0075] That is to say, when the driven rod 162 slides downward, the nozzle 140 is in a downward swinging state. At this time, the driven rod 162 will also press the valve plate 156 downward through the pressure rod 159 and the push rod 158, so that the valve plate 156 blocks the gas in the exhaust pipe 152, thereby avoiding the phenomenon that the gas is discharged from the exhaust pipe 152 when the nozzle 140 swings downward, thereby saving gas.

[0076] The second object of the present invention is to provide a working method of a shed hanging spraying device for asparagus pest control, comprising the following method steps:

[0077] S1. During the movement of the spraying device, the driven rod 162 slides longitudinally back and forth on the surface of the sliding surface 161 under the guidance of the top cover 121;

[0078] S2. When the driven rod 162 moves toward the center of the spray device, the distance between the driven rod 162 and the spray head 140 becomes farther, so that the spray head 140 is pulled upward by the traction member; when the driven rod 162 moves toward the outer side and downward of the spray device, the distance between the driven rod 162 and the spray head 140 becomes closer, and at this time, the spray head 140 is pushed downward by the traction member;

[0079] S3. When the nozzle 140 swings upward, the liquid medicine sprayed by the nozzle 140 will be sucked into the guide tube 151, and then sprayed out through the other end of the guide tube 151, so that the liquid medicine floats in the width direction of the greenhouse;

[0080] S4. The hanging rail 100 is arranged to penetrate multiple greenhouses, so that the spraying device can shuttle between the multiple greenhouses through the hanging rail 100 to spray the multiple greenhouses.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hanging spraying device for controlling asparagus pests and diseases in a shed, comprising a hanging rail (100), guide rails (110) arranged on both sides of the hanging rail (100), and a medicine storage barrel (120) moved on the top of the hanging rail (100) by a driving mechanism (130); characterized in that: The hanging rail (100) and the guide rail (110) are both fixedly arranged at the bottom of the shed roof (200), and both penetrate a plurality of sheds arranged side by side; the side wall of the guide rail (110) has a wavy guide end; A spray head (140) and a traction mechanism are rotatably arranged on both sides of the medicine storage barrel (120) in the moving direction, wherein: The traction mechanism is located on both sides of the medicine storage barrel (120) and is arranged corresponding to the guide rail (110), and the traction mechanism is connected to the nozzle (140); when the traction mechanism moves, the wavy guide end of the side wall of the guide rail (110) drives the nozzle (140) to swing back and forth longitudinally through the traction mechanism; A flow guide mechanism (150) is arranged above the reciprocating swinging area of ​​the nozzle (140), and the flow guide mechanism (150) comprises a flow guide pipe (151) and a pressurizing component for placing one end of the flow guide pipe (151) in a negative pressure state and the other end in a positive pressure state; wherein: The end of the guide tube (151) in a negative pressure state faces the nozzle (140), and the end in a positive pressure state faces the side wall in the width direction of the greenhouse; when the nozzle (140) swings upward, the guide tube (151) uses the effect of pressure difference to guide the liquid medicine sprayed by the nozzle (140) in the width direction of the greenhouse.

2. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 1, characterized in that: The medicine storage barrel (120) is provided with a top cover (121) connected to the driving mechanism (130) at the top, and a bottom plate (122) at the bottom, wherein the bottom plate (122) and the top cover (121) are fixedly connected; An air compressor (123) is fixedly arranged at the bottom of the bottom plate (122); the air compressor (123) is connected to the medicine storage barrel (120) through an air pipe (124) and is used to deliver compressed gas to the inside of the medicine storage barrel (120), so that high pressure is generated inside the medicine storage barrel (120); A drug adding port (125) for adding drug liquid is provided on one side of the drug storage barrel (120).

3. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 2, characterized in that: The driving mechanism (130) comprises at least two rotating wheels (131), and the two rotating wheels (131) are both rotatably arranged on the top of the hanging rail (100); the same ends of the two rotating wheels (131) are both rotatably connected to a frame (132) fixed on the top of the top cover (121); A motor (134) is arranged on the top of the top cover (121), and a belt (133) is provided between the output end of the motor (134) and the shafts at the ends of the two rotating wheels (131), so that the motor (134) drives the rotating wheels (131) to rotate.

4. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 1, characterized in that: The medicine storage barrel (120) is provided with a medicine delivery tube (141), and the medicine delivery tube (141) has three open connection ends, one of which is connected to the medicine storage barrel (120); and the other two connection ends extend to positions corresponding to the two nozzles (140); One end of the nozzle (140) is a rotating end; the inner diameter of the rotating end is consistent with the outer diameter of the connecting end, and the rotation of the nozzle (140) is achieved by sleeve-arranging the rotating end on the outer ring of the connecting end; The spraying end of the spray head (140) is arranged toward the width direction of the greenhouse.

5. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 2, characterized in that: The end array of the guide rail (110) is provided with a plurality of triangular convex plates, and the plurality of convex plates are connected to each other, so that the outer sides of the plurality of convex plates together form a wave-shaped groove (112).

6. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 5, characterized in that: The traction mechanism comprises a driven rod (162) and a mounting block (160) fixedly arranged on a side wall of the top cover (121), wherein the top of the mounting block (160) has a sliding surface (161) parallel to the guide rail (110); One end of the driven rod (162) extends to the groove (112), and the other end is slidably connected to the sliding surface (161). When the driven rod (162) moves, the driven rod (162) reciprocates through the groove (112); A return spring is provided between one side of the driven rod (162) and one end of the sliding surface (161) to elastically connect the two, and is used to restrict the driven rod (162) to the depth of the groove (112) when the return spring is not subjected to external force.

7. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 6, characterized in that: A traction member is also provided between the driven rod (162) and the nozzle (140) for driving the nozzle (140) to swing longitudinally when the driven rod (162) moves; the traction member is a traction rod (163) having one end rotatably connected to one side of the driven rod (162) and the other end rotatably connected to one side of the nozzle (140).

8. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 6, characterized in that: The pressurizing component is an air tank (153) fixedly arranged at the bottom of the base plate (122) and connected to the air compressor (123); a pressure relief valve (154) is arranged on one side of the air tank (153) for releasing excess pressure when the pressure in the air tank (153) exceeds a predetermined value; at the same time, the air tank (153) is connected to an exhaust pipe (152), one end of the exhaust pipe (152) extends to the guide pipe (151) and penetrates from the outer ring in the middle of the guide pipe (151) into the interior of the guide pipe (151), so that positive pressure is formed at one end of the guide pipe (151) and negative pressure is formed at the other end.

9. The indoor hanging spraying device for controlling asparagus pests and diseases according to claim 8, characterized in that: A valve housing (155) is disposed in the middle of the exhaust pipe (152), a valve plate (156) is longitudinally slidably disposed in the valve housing (155), a connecting spring (157) is disposed between the top of the valve plate (156) and the inner wall of the top of the valve housing (155) to elastically connect the two, and in a normal state, the connecting spring (157) pulls the valve plate (156) upwards; The top of the valve plate (156) is fixedly connected to a push rod (158) which slides longitudinally through the valve housing (155), and the bottom of the driven rod (162) is fixedly connected to a pressure rod (159) located directly above the push rod (158). When the driven rod (162) slides downward, the driven rod (162) presses the push rod (158) through the pressure rod (159), so that the push rod (158) drives the valve plate (156) to move downward.

10. A method for operating the in-shed hanging spraying device for controlling asparagus pests and diseases as claimed in any one of claims 5 to 9, characterized in that: The method comprises the following steps: S1. During the movement of the spraying device, the driven rod (162) slides longitudinally back and forth on the surface of the sliding surface (161) under the guidance of the top cover (121); S2, when the driven rod (162) moves toward the center of the spray device, the distance between the driven rod (162) and the spray head (140) becomes farther, so that the spray head (140) is pulled upward by the traction member; when the driven rod (162) moves toward the outer side and downward of the spray device, the distance between the driven rod (162) and the spray head (140) becomes closer, and at this time, the spray head (140) is pushed downward by the traction member; S3. When the nozzle (140) swings upward, the liquid medicine sprayed by the nozzle (140) will be sucked into the guide tube (151), and then sprayed out through the other end of the guide tube (151), so that the liquid medicine floats in the width direction of the greenhouse; S4. The hanging rail (100) is arranged to penetrate multiple greenhouses, so that the spraying device can shuttle between the multiple greenhouses through the hanging rail (100) to spray the multiple greenhouses.

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