Greenhouse built-in spraying device

Abstract

This invention discloses a built-in spraying device for greenhouses, belonging to the field of agricultural equipment technology. Its features include: a walking mechanism connected to a spraying mechanism; the spraying mechanism includes a spray pipe, built-in pistons, a fixed support, and a drive assembly; the spray pipe is installed at the lower end of the fixed support, and an outlet pipe is arranged on the spray pipe; two built-in pistons are installed inside the spray pipe, initially positioned at both ends of the spray pipe, and driven by the drive assembly; the built-in pistons are provided with inlet holes, and the spray pipe has a first inlet and a second inlet at each end; the second inlet of the spray pipe is connected to the outer end of the inlet hole of the built-in piston via a highly elastic spiral tube, and the inner end of the inlet hole of the built-in piston is connected to a one-way valve.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, and in particular to a built-in spraying device for greenhouses. Background Technology

[0002] Greenhouse crops are prone to diseases due to the high temperature and humidity inside, necessitating pesticide application. Furthermore, the application cycle in greenhouses is short, and manual spraying would significantly increase the labor intensity for agricultural workers. Therefore, existing greenhouses are equipped with pesticide spraying systems.

[0003] Furthermore, crops in greenhouses also require frequent irrigation and liquid fertilizer application, and greenhouses are equipped with spraying devices for these purposes. Since the concentrations of liquid pesticides, irrigators, and liquid fertilizers differ, using the same spraying device for all these tasks can easily lead to nozzle clogging. Using three separate spraying devices for these three tasks not only increases costs but also results in complex and disorganized piping arrangements.

[0004] However, existing agricultural spraying systems typically cover the entire width of a greenhouse, using a traveling mechanism to spray pesticides throughout. In this case, the spraying system is only suitable for growing a single crop within the entire greenhouse. If crops are planted in sections arranged by width within the greenhouse, and different crops in different locations require different pesticides or liquid fertilizers, or if a single crop needs irrigation, existing spraying systems cannot accomplish these tasks.

[0005] The utility model patent "A Mobile Spraying Device for Greenhouses" (application number: 2016208288685) discloses a mobile spraying device for greenhouses, in which the spray gun is mounted on a moving mechanism. The spray gun can move with the moving mechanism to spray pesticides on crops in different locations within the greenhouse. At that time, the spray gun in the aforementioned patent application could only move with the moving mechanism and could not adjust the width of the spray gun. Therefore, it was impossible to adjust the spraying range of the spray gun and spray crops with different planting widths. Summary of the Invention

[0006] The technical objective of this invention is to address the shortcomings of the prior art by providing a built-in spraying device for greenhouses.

[0007] The technical solution of this invention to solve its technical problem is: a built-in spraying device for greenhouses, including a walking mechanism; characterized in that: the walking mechanism is connected to a spraying mechanism, the spraying mechanism includes a spray pipe, a built-in piston, a fixed bracket and a drive assembly, the lower end of the fixed bracket is equipped with a spray pipe, and an outlet pipe is arranged on the spray pipe; two built-in pistons are installed inside the spray pipe, the initial position of the built-in pistons is located at both ends of the spray pipe, and the built-in pistons are driven by the drive assembly; the built-in pistons are provided with inlet holes, and the two ends of the spray pipe are respectively provided with a first inlet and a second inlet, the second inlet of the spray pipe is connected to the outer end of the inlet hole of the built-in piston through a high-elasticity spiral tube, and the inner end of the inlet hole of the built-in piston is connected to a one-way valve.

[0008] The aforementioned walking mechanism includes a side support, guide rails, guide wheels, a walking rack, and a walking gear. Multiple guide wheels rotate and engage with the side support. An electric motor is installed on the side support, and the electric motor is fixedly engaged with the gear hole of the walking gear. Walking racks and guide rails are installed on both sides of the greenhouse, and the grooves of the guide wheels engage with the guide rails. The walking gear meshes with the walking rack.

[0009] The aforementioned liquid outlet pipe is connected to the atomizing nozzle.

[0010] The aforementioned built-in piston is equipped with a permanent magnet. The drive assembly includes an active magnet, a drive screw, a half-screw nut, and a connecting block. The upper end of the fixed bracket is provided with an elongated guide hole. Ear plates are fixed at both ends of the elongated guide hole of the fixed bracket. The two ear plates are rotatably engaged with the drive screw. One end of the screw is connected to the motor shaft of the electric motor. The connecting block is provided with a placement groove. The active magnet is installed in the placement groove and placed on the outer wall of the spray pipe. The active magnet and the permanent magnet have opposite magnetic properties and attract each other. The upper end of the connecting block passes through the elongated guide hole of the fixed bracket and is connected to the placement plate. Two clamping blocks are symmetrically installed on the placement plate. The corresponding ends of the two clamping blocks are provided with grooves. Half-screw nuts are fixedly installed in the grooves of the clamping blocks. The two half-screw nuts are symmetrically distributed on both sides of the drive screw.

[0011] The aforementioned built-in piston has an annular groove, and a permanent magnet is embedded in the annular groove.

[0012] The aforementioned clamping block is connected to the placement plate via an electromagnetic push rod. The lower end of the clamping block is provided with a guide block, and the placement plate is provided with a corresponding sliding groove. The guide block is placed in the sliding groove of the placement plate and slides in cooperation with the placement plate.

[0013] The aforementioned walking mechanism is connected to multiple spraying mechanisms via a conversion mechanism. The conversion mechanism includes a rotating disk and a multi-way solenoid valve. Multiple spraying mechanisms are installed between the two rotating disks in a circumferentially evenly distributed manner. The first inlet of the spray pipe at both ends of the spraying mechanism is connected to different outlets of the multi-way solenoid valve, and the second inlet of the spray pipe is connected to another outlet of the multi-way solenoid valve.

[0014] The aforementioned side support is equipped with a fixed sleeve, and the center of the rotating disk is equipped with a rotating sleeve. The rotating sleeve of the rotating disk is rotatably engaged with the fixed sleeve. An electric motor is installed on the side support, and the electric motor is connected to the rotating sleeve of the rotating disk through a transmission device.

[0015] The aforementioned diverter includes a rotating cylinder and a fixed cylinder. The rotating cylinder includes a rotating inner cylinder and a rotating outer cylinder. The rotating outer cylinder has a cavity with one open end. The outer end of the rotating inner cylinder is fixedly installed on the wall of one end of the rotating outer cylinder and has a liquid outlet. The outer wall of the rotating outer cylinder has multiple liquid outlets. The fixed cylinder includes a fixed inner cylinder and a fixed outer cylinder. The inner ends of the fixed outer cylinder and the fixed inner cylinder have openings. The outer end of the fixed inner cylinder is fixedly connected to the inner wall of the outer end of the fixed outer cylinder. The outer end of the fixed inner cylinder has a liquid inlet, and the outer wall of the fixed outer cylinder has a liquid inlet. The inner end of the rotating inner cylinder is rotatably engaged with the inner end of the fixed inner cylinder, and the inner end of the rotating outer cylinder is rotatably engaged with the inner end of the fixed outer cylinder; so that the rotating inner cylinder and the fixed inner cylinder, as well as the rotating outer cylinder and the fixed outer cylinder, form cavities that do not interfere with each other; the fixed outer cylinder is fixedly connected to the inner wall of the fixed sleeve, and the rotating outer cylinder is fixedly connected to the inner wall of the rotating sleeve; the inlet of the multi-way solenoid valve is connected to the outlet of the rotating inner cylinder, and the multiple outlets of the rotating outer cylinder are respectively connected to the second inlet of different spray pipes through pipes and solenoid valves.

[0016] Compared with the prior art, the present invention has the following outstanding advantages:

[0017] 1. The spraying mechanism of the present invention has two built-in pistons installed inside the spraying pipe. The two built-in pistons are driven by the drive assembly, which can divide the spraying pipe into three parts, so that pesticides can be sprayed on one to three different crops distributed in the width direction in the greenhouse at the same time, depending on different situations.

[0018] 2. The walking mechanism of the present invention is connected to three spraying mechanisms through a conversion mechanism. In addition to spraying pesticides on crops, it can also irrigate or spray fertilizer on crops, realizing multiple uses in one machine and greatly improving the adaptability of the present invention.

[0019] 3. The built-in piston of the present invention is driven by a drive assembly, which includes an active magnet, a drive screw, a half screw nut, and a connecting block. The half screw nut is fixedly installed in the groove of the clamping block. The two half screw nuts are symmetrically distributed on both sides of the drive screw. When the corresponding screw nut needs to be moved, it is only necessary to activate the electromagnetic push rod to combine the two half screw nuts to form a complete screw nut, which cooperates with the drive screw, so that one drive screw can drive the two screw nuts independently.

[0020] 4. The first liquid inlets at both ends of the spray pipe of the spraying mechanism of the present invention are respectively connected to different liquid outlets of the multi-way solenoid valve, the second liquid inlet of the spray pipe is connected to another liquid outlet of the multi-way solenoid valve, and the liquid inlet of the multi-way solenoid valve is connected through a diverter. The diverter can simultaneously deliver liquid to the first liquid inlet and the second liquid inlet of the spray pipe without affecting the rotation of the spraying mechanism. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the liquid spraying mechanism of the present invention.

[0023] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0024] Figure 4 This is a schematic diagram of the internal structure of the spray mechanism of the present invention.

[0025] Figure 5 yes Figure 4 A magnified view of part B in the middle section.

[0026] Figure 6 This is a schematic diagram of the rotating structure. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, the present invention includes a walking mechanism 1, a conversion mechanism 2, and a spraying mechanism 3.

[0029] The walking mechanism 1 includes a side support 13, a guide rail 15, a guide wheel 14, a walking rack 12, and a walking gear 11. The side support 13 is rotatably engaged with multiple guide wheels 14. An electric motor is installed at the lower end of the side support 13. The electric motor is fixedly engaged with the gear hole of the walking gear 11. The walking rack 12 and the guide rail 15 are respectively installed on both sides of the greenhouse. The groove of the guide wheel 14 engages with the guide rail 15. The walking gear 11 meshes with the walking rack 12.

[0030] When the motor drives the traveling gear 11 to rotate, the traveling gear 11 rolls along the traveling rack 12, which in turn drives the side bracket 13 to move along the guide rail 15.

[0031] like Figure 2 As shown, the walking mechanism 1 is connected to the spraying mechanism 3. The spraying mechanism 3 includes a spray pipe 33, a built-in piston 37, a fixed bracket 31 and a drive assembly 32. The spray pipe 33 is installed at the lower end of the fixed bracket 31. The spray pipe 33 is arranged with linearly and uniformly distributed outlet pipes 34. The outlet pipes 34 are connected to the atomizing nozzle 35.

[0032] Two built-in pistons 37 are installed inside the spray pipe 33. The built-in pistons 37 are initially located at both ends of the spray pipe 33 and are driven by the drive assembly 32.

[0033] In this embodiment, as Figure 3 As shown, the built-in piston 37 has an annular groove, in which a permanent magnet 38 is embedded. The drive assembly 32 includes an active magnet 322, a drive screw 325, a half-screw nut 324, and a connecting block 321. The upper end of the fixed bracket 31 has an elongated guide hole, and ear plates are fixed at both ends of the elongated guide hole of the fixed bracket 31. The two ear plates are rotatably engaged with the drive screw 325. One end of the drive screw 325 is connected to the motor shaft of the electric motor. The lower end of the connecting block 321 has a semi-cylindrical placement groove, in which the active magnet 322 is installed. The active magnet 322 is placed on the outer wall of the spray pipe 33. The active magnet 322 and the permanent magnet 38 have opposite magnetic properties and attract each other.

[0034] In the optimized scheme, the active magnet 322 is semi-annular and is attached to the outer wall of the upper half of the spray pipe 33.

[0035] The upper end of the connecting block 321 passes through the elongated guide hole of the fixed bracket 31 and is connected to the placement plate 326. Two clamping blocks 323 are symmetrically installed on the placement plate 326. A groove is provided at one end of the two clamping blocks 323 respectively. A half screw nut 324 is fixedly installed in the groove of the clamping block 323. The two half screw nuts 324 are symmetrically distributed on both sides of the drive screw 325.

[0036] The clamping block 323 is connected to the placement plate 326 via an electromagnetic push rod 327. A guide block is provided at the lower end of the clamping block 323, and a corresponding sliding groove is provided on the placement plate 326. The guide block is placed within the sliding groove of the placement plate 326, slidingly engaging with it. When the electromagnetic push rod 327 is activated, it drives the clamping block 323 to move, causing the half-screw nuts 324 on the two clamping blocks 323 to combine into a complete screw nut, which engages with the drive screw 325. When the drive screw 325 rotates, it can drive the active magnet 322 to move through the combined screw nut.

[0037] like Figure 4 and 5 As shown, the built-in piston 37 is provided with a liquid inlet hole, and the two ends of the spray pipe 33 are respectively provided with a first liquid inlet and a second liquid inlet. The second liquid inlet of the spray pipe 33 is connected to the outer end of the liquid inlet hole of the built-in piston 37 through a high-elasticity spiral tube 36. The outer end of the high-elasticity spiral tube 36 is fixed on the end wall of the spray pipe 33. The inner end of the liquid inlet hole of the built-in piston 37 is connected to a one-way valve, so that the liquid can only flow into the spray pipe 33 through the liquid inlet hole of the built-in piston 37 from the second liquid inlet, and cannot flow back.

[0038] The first inlet ports at both ends of the spray pipe 33 are connected to different medicine storage tanks via a one-way valve, a pump body, and a solenoid valve, respectively, ensuring that liquid can only flow into the spray pipe 33 from the medicine storage tank and cannot flow back. The second inlet pipes at both ends of the spray pipe 33 are connected to the same medicine storage tank via a pump body and a solenoid valve, respectively.

[0039] In this embodiment, in order to enable the device to spray water and liquid fertilizer, the walking mechanism 1 is connected to three spraying mechanisms 3 through the conversion mechanism 2. The conversion mechanism 2 includes a rotating disk 21 and a multi-way solenoid valve 22. Three spraying mechanisms 3 are installed between the two rotating disks 21 in a circumferentially evenly distributed manner. The first inlet of the spray pipe 33 at both ends of the spraying mechanism 3 is connected to different outlets of the multi-way solenoid valve 22, and the second inlet of the spray pipe 33 is connected to another outlet of the multi-way solenoid valve 22. The inlet of the multi-way solenoid valve 22 is connected to the storage tank through the pump body via the diverting joint 4.

[0040] In this embodiment, the multi-way solenoid valve 22 is an annular multi-way valve.

[0041] The side support 13 is equipped with a fixed sleeve 16, and the center of the rotating disk 21 is equipped with a rotating sleeve 25. The rotating sleeve 25 of the rotating disk 21 is rotatably engaged with the fixed sleeve 16. A driven gear 24 is mounted on the rotating sleeve 25 of the rotating disk 21. An electric motor is mounted on the side support 13, and the motor shaft of the electric motor is connected to the driving gear 23. The driving gear 23 meshes with the driven gear 24. When the electric motor drives the driving gear 23 to rotate, it can drive the rotating disk 21 to rotate through the driven gear 24.

[0042] like Figure 6 As shown, the steering joint 4 includes a rotating cylinder and a fixed cylinder. The rotating cylinder includes a rotating inner cylinder 42 and a rotating outer cylinder 41. The rotating outer cylinder 41 has a cavity with one end open. The outer end of the rotating inner cylinder 42 is fixedly installed on the wall of one end of the rotating outer cylinder 41 and has a liquid outlet. The outer wall of the rotating outer cylinder 41 has multiple liquid outlets, and the liquid outlets on the rotating outer cylinder 41 correspond to the second liquid inlet of the spray pipe 33. The fixed cylinder includes a fixed inner cylinder 44 and a fixed outer cylinder 43. The inner ends of the fixed outer cylinder 43 and the fixed inner cylinder 44 have openings. The outer end of the fixed inner cylinder 44 is fixedly connected to the inner wall of the outer end of the fixed outer cylinder 43. The outer end of the fixed inner cylinder 44 has a liquid inlet, and the outer wall of the fixed outer cylinder 43 has a liquid inlet. The inner end of the rotating inner cylinder 42 is rotatably engaged with the inner end of the fixed inner cylinder 44, and the inner end of the rotating outer cylinder 41 is rotatably engaged with the inner end of the fixed outer cylinder 43. The rotating inner cylinder 42 and the fixed inner cylinder 44 form cavities that do not interfere with each other, as do the rotating outer cylinder 41 and the fixed outer cylinder 43.

[0043] Sealing rings are installed between the inner end of the rotating inner cylinder 42 and the inner end of the fixed inner cylinder 44, and between the inner end of the rotating outer cylinder 41 and the inner end of the fixed outer cylinder 43.

[0044] The fixed outer cylinder 43 is fixedly connected to the inner wall of the fixed sleeve 16, the rotating outer cylinder 41 is fixedly connected to the inner wall of the rotating sleeve 25, the inlet of the multi-way solenoid valve 22 is connected to the outlet of the rotating inner cylinder 42, and the multiple outlets of the rotating outer cylinder 41 are respectively connected to the second inlet of different spray pipes 33 through pipes and solenoid valves.

[0045] The operation process is as follows: When using this invention, the spray pipe 33 is divided into different spraying sections according to the width of different planting areas in the greenhouse. The built-in piston 37 that needs to be moved is selected according to the specific situation. The built-in piston 37 is driven to move to the appropriate position through the drive mechanism, which pulls the high elastic spiral tube 36 to extend, and then the spraying operation is carried out.

[0046] When the planting area in the greenhouse is the same crop, the pesticide is injected directly into the spray pipe 33 through the second inlet of the spray pipe 33 to carry out the spraying operation.

[0047] When two different crops are planted in the planting area of ​​the greenhouse according to the width, one of the built-in pistons 37 is selected, and the built-in piston 37 is driven by the drive mechanism to move to the appropriate position, dividing the spray pipe 33 into two parts, and then spraying the two different crops at the same time.

[0048] When three different crops are planted in the planting area of ​​the greenhouse according to their width, the two built-in pistons 37 are moved to the appropriate position through the drive mechanism, and then the three different crops are sprayed at the same time.

[0049] When three or more different crops are planted in the planting area of ​​the greenhouse, the two built-in pistons 37 are moved to appropriate positions via a drive mechanism, and then spraying is performed on two different crops simultaneously. Finally, by adjusting the two built-in pistons 37 and moving them to appropriate positions via the drive mechanism, spraying is performed on different crops in sequence.

[0050] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A built-in spraying device for a greenhouse, comprising a walking mechanism; characterized in that: The walking mechanism is connected to the spraying mechanism, which includes a spray pipe, built-in pistons, a fixed bracket, and a drive assembly. The spray pipe is mounted on the lower end of the fixed bracket, and an outlet pipe is arranged on the spray pipe. Two built-in pistons are installed inside the spray pipe, initially positioned at both ends of the spray pipe. The built-in pistons are driven by the drive assembly. Each built-in piston has a liquid inlet hole. The spray pipe has a first liquid inlet and a second liquid inlet at each end. The second liquid inlet of the spray pipe is connected to the outer end of the liquid inlet hole of the built-in piston via a highly elastic spiral tube. The inner end of the liquid inlet hole of the built-in piston... The end is connected to a one-way valve; the walking mechanism is connected to multiple spraying mechanisms via a switching mechanism, which includes a rotating disk and a multi-way solenoid valve. Multiple spraying mechanisms are installed between the two rotating disks in a circumferentially evenly distributed manner. The first inlet of the spray pipe at both ends of the spraying mechanism is connected to different outlets of the multi-way solenoid valve, and the second inlet of the spray pipe is connected to another outlet of the multi-way solenoid valve. The inlet of the multi-way solenoid valve is connected to the storage tank via a pump body through a diverter. The walking mechanism includes a side support, on which a fixed sleeve is provided. A rotating mechanism is located at the center of the rotating disk. The sleeve, the rotating sleeve of the rotating disk, and the fixed sleeve are rotatably fitted. A motor is mounted on the side bracket, and the motor is connected to the rotating sleeve of the rotating disk through a transmission device. The steering joint includes a rotating cylinder and a fixed cylinder. The rotating cylinder includes a rotating inner cylinder and a rotating outer cylinder. The rotating outer cylinder has a cavity with one open end. The outer end of the rotating inner cylinder is fixedly installed on the wall of one end of the rotating outer cylinder and has a liquid outlet. The outer wall of the rotating outer cylinder has multiple liquid outlets. The fixed cylinder includes a fixed inner cylinder and a fixed outer cylinder. The inner ends of the fixed outer cylinder and the fixed inner cylinder have openings. The outer end of the fixed inner cylinder is fixed to the inner wall of the outer end of the fixed outer cylinder. The system is configured such that the outer end of the fixed inner cylinder has a liquid inlet, and the outer wall of the fixed outer cylinder has a liquid inlet. The inner end of the rotating inner cylinder is rotatably engaged with the inner end of the fixed inner cylinder, and the inner end of the rotating outer cylinder is rotatably engaged with the inner end of the fixed outer cylinder. This allows the rotating inner cylinder and the fixed inner cylinder to form non-interfering cavities with the rotating outer cylinder and the fixed outer cylinder, respectively. The inner wall of the fixed outer cylinder is fixedly connected to the inner wall of the fixed sleeve, and the inner wall of the rotating outer cylinder is fixedly connected to the inner wall of the rotating sleeve. The liquid inlet of the multi-way solenoid valve is connected to the liquid outlet of the rotating inner cylinder, and the multiple liquid outlets of the rotating outer cylinder are respectively connected to the second liquid inlets of different spray pipes through pipes and solenoid valves.

2. The greenhouse built-in spraying device according to claim 1, characterized in that: The walking mechanism also includes guide rails, guide wheels, walking racks and walking gears. Multiple guide wheels rotate and cooperate with each other on the side support. An electric motor is installed on the side support. The electric motor is fixedly cooperated with the gear hole of the walking gear. Walking racks and guide rails are installed on both sides of the greenhouse. The groove of the guide wheel cooperates with the guide rail. The walking gear meshes with the walking rack.

3. The greenhouse built-in spraying device according to claim 1, characterized in that: The liquid outlet pipe is connected to the atomizing nozzle.

4. The greenhouse built-in spraying device according to claim 1, characterized in that: The built-in piston is equipped with a permanent magnet. The drive assembly includes an active magnet, a drive screw, a half-screw nut, and a connecting block. The upper end of the fixed bracket is provided with an elongated guide hole. Ear plates are fixed at both ends of the elongated guide hole of the fixed bracket. The two ear plates are rotatably engaged with the drive screw. One end of the screw is connected to the motor shaft of the electric motor. The connecting block is provided with a placement groove. The active magnet is installed in the placement groove and is placed on the outer wall of the spray pipe. The active magnet and the permanent magnet have opposite magnetic properties and attract each other. The upper end of the connecting block passes through the elongated guide hole of the fixed bracket and is connected to the placement plate. Two clamping blocks are symmetrically installed on the placement plate. The corresponding ends of the two clamping blocks are provided with grooves. Half-screw nuts are fixedly installed in the grooves of the clamping blocks. The two half-screw nuts are symmetrically distributed on both sides of the drive screw.

5. The greenhouse built-in spraying device according to claim 4, characterized in that: The built-in piston is provided with an annular groove, and a permanent magnet is embedded in the annular groove.

6. The greenhouse built-in spraying device according to claim 4, characterized in that: The clamping block is connected to the placement plate via an electromagnetic push rod. The lower end of the clamping block is provided with a guide block, and the placement plate is provided with a corresponding sliding groove. The guide block is placed in the sliding groove of the placement plate and slides with the placement plate.

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