A plant protection device for potato cultivation

Abstract

The utility model provides a kind of plant protection equipment for potato cultivation, plant protection equipment for potato cultivation includes cultivation support and liquid supply assembly being transversely slidably arranged at the top of cultivation support, between liquid supply assembly and cultivation support is detachably connected, and the bottom of liquid supply assembly is fixed with multiple spray nozzles one, the outside of liquid supply assembly is longitudinally slidably arranged with moving block, the both sides of moving block are fixed with third sliding block, the inner side wall of two third sliding blocks is transversely rotatably arranged with hollow mounting plate, the top of two mounting plates is fixed with dust supply assembly etc., the plant protection equipment for potato cultivation provided by the utility model integrates two different plant protection modes of liquid spraying and powder spraying, can spray water and nutrient solution, meet the basic needs of potato to water and nutrients, can also spray powdery pesticide, prevent and cure disease and insect pests, and can meet the diversified needs of disease and insect pest control during potato growth.

Description

Technical Field

[0001] This utility model relates to the field of potato breeding technology, and in particular to a plant protection device for potato cultivation. Background Technology

[0002] In the large-scale cultivation of potatoes, pest and disease control, as well as precise control of the crop growth environment, are key factors in ensuring yield and quality.

[0003] Traditional potato plant protection methods, taking some existing plant protection devices as an example, such as the announcement number CN223110626U, disclose a potato breeding cultivation device, including a cultivation base, a breeding support that is movably connected inside the cultivation base, a support frame on the cultivation base, a guide rail on the support frame, a slider slidably connected on the guide rail, a drive unit on the guide rail for driving the slider to move, a spray head movably connected to the slider, and a docking mechanism between the spray head and the slider. By using the combination of the guide rail, slider, and drive unit, the movement range of the spray head can be adjusted. Therefore, a large area of ​​water and nutrient solution spraying coverage can be achieved with a single set of spray heads, reducing enterprise costs. At the same time, the design of the docking mechanism makes the disassembly and assembly of the spray head convenient, thus reducing maintenance work and maintenance costs. It was found that the above-mentioned device still has shortcomings in use. On the one hand, its function is relatively simple, only able to carry out liquid spraying operations, such as spraying water and nutrient solution, which cannot meet the needs of potato growth for powdered pesticide spraying. Powdered pesticides play a unique role in the prevention and control of potato diseases and pests. For example, some systemic powders can control diseases and pests for a longer period of time and have a relatively small impact on the environment. However, the existing device cannot simultaneously carry out two different plant protection methods, liquid spraying and powder spraying. When powder is needed for prevention and control, special powder spraying equipment needs to be equipped, which causes inconvenience in actual use.

[0004] Therefore, it is necessary to provide a new plant protection device for potato cultivation to solve the above-mentioned technical problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a plant protection device for potato cultivation.

[0006] The plant protection equipment for potato cultivation provided by this utility model includes: a cultivation support and a liquid supply component that is laterally slidably disposed on the top of the cultivation support. The liquid supply component is detachably connected to the cultivation support, and multiple nozzles are fixed at the bottom of the liquid supply component. A moving block is longitudinally slidably disposed on the outer side of the liquid supply component. A third slider is fixed on both sides of the moving block. A hollow mounting plate is laterally rotatably disposed on the inner sidewall of each of the two third sliders. A dust supply component is fixed at the top of each of the two mounting plates. Multiple equally spaced nozzles are fixed at the bottom of each of the two mounting plates. The multiple nozzles are respectively connected to the interior of the two dust supply components. One end of each mounting plate is engaged with one end of the liquid supply component through a locking component.

[0007] Preferably, the liquid supply assembly includes a liquid supply plate, one end of which is detachably connected to the cultivation support via a docking assembly. A second sliding groove is provided on both sides of the liquid supply plate, and a limiting groove is provided on the inner sidewall of each of the two second sliding grooves. One end of each of the two third sliders slides on the inner wall of the two limiting grooves respectively. A driving assembly is fixed to the end of the liquid supply plate away from the docking assembly. The drive assembly includes a second motor, a second lead screw, and a slide bar. The second motor is fixed to the end of the liquid supply plate away from the docking assembly. The two ends of the second lead screw rotate on the inner sidewall of one of the second slide grooves. The two ends of the slide bar are fixedly connected to the inner wall of the other second slide groove. The output end of the second motor passes through the surface of the liquid supply plate and is fixedly connected to one end of the second lead screw. One of the second sliders is threadedly connected to the surface of the second lead screw, and the other second slider slides on the surface of the slide bar. The bottoms of the two second sliders are fixedly connected by a moving block located directly below the liquid supply plate.

[0008] Preferably, each of the two third sliders has a mounting cavity formed on its inner sidewall, and one end of each of the two mounting plates rotates on the inner sidewall of the two mounting cavities via two rotating shafts. Both dust supply assemblies include dust supply pipes, which are respectively fixed to the top of the two mounting plates, and the other end of each dust supply pipe is fixedly connected to an external device. Magnet 1 is fixed to one side of each of the two mounting plates near the rotating shaft, and magnet 2 is fixed to the inner sidewall of each of the two mounting cavities. The two magnet 1s are respectively magnetically attracted to the two magnet 2s.

[0009] Preferably, the engaging assembly includes a locking block, and the end of the liquid supply plate away from the docking assembly is further provided with two locking slots. The ends of the two mounting plates away from the rotating shaft are each fixed with a locking block, and one end of the two locking blocks is respectively engaged into the two locking slots.

[0010] Preferably, the cultivation support includes a mounting frame, a breeding plate is fixed to the top of the mounting frame, a side plate is fixed to the outer side of the mounting frame, a first sliding groove is formed on the top of the side plate, a transverse groove is formed through the inner side wall of the first sliding groove, a first motor is fixed to the outer side of the side plate, a first lead screw is rotatably arranged on the inner side wall of the first sliding groove, the output end of the first motor passes through the surface of the side plate and is fixedly connected to one end of the first lead screw, a first slider is threadedly connected to the surface of the first lead screw, the first slider slides on the inner side wall of the first sliding groove, one end of the first slider passes through the surface of the transverse groove and has an installation groove, a first slot is formed on the top of the first slider, and the first slot communicates with the interior of the installation groove.

[0011] Preferably, the docking assembly includes a second slider, one end of which is fixedly connected to one end of the liquid supply plate. A second slot is provided at the end of the second slider away from the liquid supply plate. The size of the first slot matches that of the second slot. The end of the second slider away from the liquid supply plate is inserted into the mounting groove. A plug plate is inserted into the top of the first slot. The bottom of the plug plate passes through the second slot and the mounting groove in sequence and extends into the first slot.

[0012] Preferably, the bottom of the movable block is provided with a convex groove, and a plurality of nozzles are fixed at equal intervals at the bottom of the liquid supply plate. The size of the convex groove matches that of the nozzles. A connecting pipe is connected to the top of the liquid supply plate, and a cavity is formed inside the liquid supply plate. The plurality of nozzles are connected to the inside of the connecting pipe through the cavity.

[0013] Compared with related technologies, the plant protection equipment for potato cultivation provided by this utility model has the following beneficial effects: 1. This utility model integrates two different plant protection methods, liquid spraying and powder spraying, into one unit. During the potato growth process, it can spray water and nutrient solution through nozzle 1 at the bottom of the liquid supply component, just like existing devices, to meet the basic needs of potatoes for water and nutrients. At the same time, it can spray powdered pesticides through nozzle 2 on the mounting plates on both sides of the moving block to control pests and diseases. To a certain extent, it greatly improves the flexibility of plant protection operations, can cope with the diverse pest and disease control needs during potato growth, and solves a series of problems caused by the single plant protection method of existing devices. 2. This utility model integrates two functions to achieve two plant protection operations. The saved planting space can be used to expand the planting scale of potatoes, improve land utilization, and further reduce the planting cost per unit area. The moving block is longitudinally slidably set on the outside of the liquid supply component, which can drive the mounting plate and nozzle two to move in the longitudinal direction. The lateral rotation function of the mounting plate allows nozzle two to be angled in the horizontal direction, which can spray powder on specific areas or potato plants, avoiding waste caused by excessive spraying of pesticides. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of the plant protection equipment for potato cultivation provided by this utility model; Figure 2 A schematic diagram showing the disassembled structure of the plant protection equipment for potato cultivation provided by this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the liquid supply plate; Figure 4 A schematic diagram of the dust supply component; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a structural diagram of the mounting plate.

[0015] The diagram is labeled as follows: 1. Mounting frame; 11. Breeding plate; 12. Side plate; 121. First slide groove; 122. Horizontal groove; 13. First motor; 131. First lead screw; 2. First slider; 21. Mounting groove; 211. First slot; 22. Second slider; 221. Second slot; 23. Insert plate; 231. Pull ring; 3. Liquid supply plate; 31. Second slide groove; 311. Slot; 312. Second motor; 313. Second lead screw; 314. Slide rod; 32. Limiting groove; 33. Connecting pipe; 34. Nozzle 1; 4. Cavity; 5. Moving block; 51. Third slider; 511. Mounting cavity; 512. Convex groove; 52. Mounting plate; 521. Dust supply pipe; 522. Slot; 523. Nozzle 2; 53. Rotating shaft; 54. Magnet 1; 55. Magnet 2. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figures 1 to 6 ,in, Figure 1 A schematic diagram of the overall structure of the plant protection equipment for potato cultivation provided by this utility model; Figure 2 A schematic diagram showing the disassembled structure of the plant protection equipment for potato cultivation provided by this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the liquid supply plate; Figure 4 A schematic diagram of the dust supply component; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a structural diagram of the mounting plate.

[0018] In some embodiments, such as Figures 1 to 6 As shown, the device includes a cultivation support frame and a liquid supply assembly that is laterally slidable on top of the cultivation support frame. The liquid supply assembly is detachably connected to the cultivation support frame, and multiple nozzles 34 are fixed at the bottom of the liquid supply assembly. The nozzles 34 are preferably spiral nozzles. After the liquid enters the nozzles 34, it rotates and accelerates in the spiral flow channel, and then sprays out from the nozzle opening of the nozzles 34, forming a spiral spray. A moving block 5 is longitudinally slidably arranged on the outer side of the liquid supply assembly. A third slider 51 is fixed on both sides of the moving block 5. The inner walls of the two third sliders 51 are laterally rotatable. There is an internally hollow mounting plate 52. A dust supply component is fixed to the top of each mounting plate 52. Multiple equally spaced nozzles 523 are fixed to the bottom of each mounting plate 52. The nozzles 523 can be Venturi nozzles. When the high-speed airflow passes through the constriction section of the Venturi tube, a negative pressure is generated, which draws in the powder and mixes it with the airflow. Then, the mixed powder airflow is sprayed out in the diffusion section. The multiple nozzles 523 are respectively connected to the interior of the two dust supply components. One end of each mounting plate 52 is engaged with one end of the liquid supply component through a locking component. Specifically, by integrating two different plant protection methods, liquid spraying and powder spraying, during the potato growth process, it can spray water and nutrient solution through the nozzle 34 at the bottom of the liquid supply component, just like existing devices, to meet the basic needs of potatoes for water and nutrients. At the same time, it can use the nozzles 523 on the mounting plates 52 on both sides of the movable block 5 to spray powdered pesticides to control pests and diseases. To a certain extent, it greatly improves the flexibility of plant protection operations and can meet the diverse pest and disease control needs during potato growth. Furthermore, by integrating the two functions, two crop protection operations can be achieved. The saved planting space can be used to expand the planting scale of potatoes, improve land utilization, and further reduce the planting cost per unit area. The moving block 5 is longitudinally slidably set on the outside of the liquid supply component, which can drive the mounting plate 52 and the second nozzle 523 to move in the longitudinal direction. The lateral rotation function of the mounting plate 52 allows the second nozzle 523 to be angled in the horizontal direction, which can spray powder on specific areas or potato plants, avoiding waste caused by excessive spraying of pesticides.

[0019] In some embodiments, reference is made to Figures 1 to 6As shown, the liquid supply assembly includes a liquid supply plate 3. One end of the liquid supply plate 3 is detachably connected to the cultivation bracket via a docking assembly. A second sliding groove 31 is provided on both sides of the liquid supply plate 3. A limiting groove 32 is provided on the inner side wall of the two second sliding grooves 31. One end of the two third sliders 51 slides on the inner wall of the two limiting grooves 32 respectively. A driving assembly is fixed at the end of the liquid supply plate 3 away from the docking assembly. The drive assembly includes a second motor 312, a second lead screw 313, and a slide bar 314. The second motor 312 is fixed to the end of the liquid supply plate 3 away from the docking assembly. The two ends of the second lead screw 313 rotate on the inner wall of one of the second slide grooves 31. The two ends of the slide bar 314 are fixedly connected to the inner wall of the other second slide groove 31. The output end of the second motor 312 passes through the surface of the liquid supply plate 3 and is fixedly connected to one end of the second lead screw 313. One of the third sliders 51 is threadedly connected to the surface of the second lead screw 313. The other third slider 51 slides on the surface of the slide bar 314. The bottoms of the two third sliders 51 are fixedly connected by a moving block 5, which is located directly below the liquid supply plate 3. Each of the two third sliders 51 has a mounting cavity 511 formed on its inner sidewall. One end of each of the two mounting plates 52 rotates on the inner sidewall of the two mounting cavities 511 via two rotating shafts 53. Both dust supply assemblies include a dust supply pipe 521, which is fixed to the top of two mounting plates 52 respectively, and the other end of the two dust supply pipes 521 is fixedly connected to an external device. Magnet 1 54 is fixed to one side of each mounting plate 52 near the rotating shaft 53. Magnet 2 55 is also fixed to the inner wall of each mounting cavity 511. Magnet 1 54 is magnetically attracted to magnet 2 55 respectively. The setting of magnet 1 54 and magnet 2 55 has movable magnetism, so that when the mounting plate 52 is fully unfolded, the mounting plate 52 can be kept perpendicular to the liquid supply plate 3. When the mounting plate 52 is half unfolded, magnet 1 54 and magnet 2 55 will not affect the half-unfolded mounting plate 52. That is, at this time, the magnetism of magnet 1 54 and magnet 2 55 is less than the resistance when the rotating shaft 53 rotates. Magnet 1 54 and magnet 2 55 can be selected according to actual needs, which will not be described in detail here. The locking assembly includes a locking block 522. The liquid supply plate 3 has two locking slots 311 at the end away from the docking assembly. The two mounting plates 52 are each fixed with a locking block 522 at the end away from the rotating shaft 53. One end of the two locking blocks 522 is respectively fastened into the two locking slots 311. The cultivation support includes a mounting frame 1, a breeding plate 11 fixed to the top of the mounting frame 1, a side plate 12 fixed to the outside of the mounting frame 1, a first sliding groove 121 opened on the top of the side plate 12, a transverse groove 122 penetrating the inner side wall of the first sliding groove 121, a first motor 13 fixed to the outside of the side plate 12, a first lead screw 131 rotatably arranged on the inner side wall of the first sliding groove 121, the output end of the first motor 13 passes through the surface of the side plate 12 and is fixedly connected to one end of the first lead screw 131, a first slider 2 is threadedly connected to the surface of the first lead screw 131, the first slider 2 slides on the inner side wall of the first sliding groove 121, one end of the first slider 2 passes through the surface of the transverse groove 122 and is provided with an installation groove 21, a first slot 211 is opened on the top of the first slider 2, and the first slot 211 is connected to the interior of the installation groove 21. For powder spraying, one end of the dust supply pipe 521 is fixedly connected to the powder outlet of the external equipment, and the other end is connected to the nozzle 523 on the mounting plate 52. When the powder feeding device is started, taking the screw conveyor as an example, the powdered agent moves forward along the channel formed inside the dust supply pipe 521 under the push of the screw blades. Specifically, when liquid spraying is required, the external liquid supply system delivers water and nutrient solution to the liquid supply plate 3, which is then sprayed out through the nozzle 34 at the bottom of the liquid supply plate 3 to spray the potato plants. At the same time, the first motor 13 starts, driving the first lead screw 131 to rotate, causing the first slider 2 to slide in the first slide groove 121, thereby driving the entire liquid supply assembly to move laterally and achieve large-area liquid spraying coverage. Furthermore, when powder spraying is required, the second motor 312 starts, driving the second lead screw 313 to rotate, causing the third slider 51, which is threadedly connected to the second lead screw 313, to slide within the second slide groove 31, thereby driving the moving block 5 to move longitudinally. At the same time, the mounting plate 52 is rotated out from its stored state, and the external powdered agent is transported to the nozzle 523 at the bottom of the mounting plate 52 through the dust supply pipe 521. The nozzle 523 sprays out the powdered agent to control diseases and pests on the potato plants. The lateral rotation function of the mounting plate 52 can adjust the spraying angle to achieve spraying in different lateral areas.

[0020] In some embodiments, reference is made to Figures 1 to 2 As shown, the docking assembly includes a second slider 22, one end of which is fixedly connected to one end of the liquid supply plate 3. A second slot 221 is provided at the end of the second slider 22 away from the liquid supply plate 3. The size of the first slot 211 matches that of the second slot 221. The end of the second slider 22 away from the liquid supply plate 3 is inserted into the mounting groove 21. An insert plate 23 is installed at the top of the first slot 211. The bottom of the insert plate 23 passes through the second slot 221 and the mounting groove 21 in sequence and extends into the first slot 211. Specifically, when installing the liquid supply assembly, the end of the second slider 22 with the second slot 221 is aligned with the mounting groove 21 and slowly inserted. Since the second slider 22 is fixedly connected to the liquid supply plate 3, the liquid supply plate 3 gradually approaches the structure where the mounting groove 21 is located. When the second slider 22 is inserted into the appropriate position, the first slot 211 and the second slot 221 are aligned vertically. The insert plate 23 is vertically inserted from the top of the first slot 211. The insert plate 23 passes through the second slot 221 and the mounting groove 21 in sequence, restricting the movement of the second slider 22 in the horizontal and vertical directions, thereby fixing the second slider 22 in the mounting groove 21. The detachable connection facilitates the replacement or maintenance of the liquid supply plate 3.

[0021] In some embodiments, reference is made to Figure 1 , Figure 3 as well as Figure 4 As shown, the bottom of the movable block 5 is also provided with a convex groove 512. The bottom of the liquid supply plate 3 is fixed with a plurality of equally spaced nozzles 34. The size of the convex groove 512 matches that of the nozzles 34. The establishment of the convex groove 512 ensures that the movable block 5 is not obstructed by the nozzles 34 when it moves, and slides under the nozzles 34. The top of the liquid supply plate 3 is connected to a connecting pipe 33. The interior of the liquid supply plate 3 forms a cavity 4. The plurality of nozzles 34 are connected to the interior of the connecting pipe 33 through the cavity 4.

[0022] Specifically, during use, an external liquid supply source delivers liquid to the cavity 4 inside the liquid supply plate 3 through the connecting pipe 33. Under pressure, the liquid entering the cavity 4 is distributed to each nozzle 34. When the moving block 5 moves under the drive, the liquid supply plate 3 moves together with the moving block 5. At the same time, the nozzles 34 spray the liquid distributed in the cavity 4 in the form of mist or column to perform liquid spraying operation on the potato plants in the target area.

[0023] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A plant protection device for potato cultivation, comprising a cultivation support frame and a liquid supply component that is laterally slidably disposed on the top of the cultivation support frame, wherein the liquid supply component is detachably connected to the cultivation support frame, and a plurality of nozzles (34) are fixed at the bottom of the liquid supply component, characterized in that, A movable block (5) is longitudinally slidably arranged on the outer side of the liquid supply component. A third slider (51) is fixed on both sides of the movable block (5). A hollow mounting plate (52) is rotatably arranged on the inner side wall of the two third sliders (51). A dust supply component is fixed on the top of the two mounting plates (52). A plurality of equally spaced nozzles (523) are fixed on the bottom of the two mounting plates (52). The plurality of nozzles (523) are respectively connected to the interior of the two dust supply components. One end of the two mounting plates (52) is engaged with one end of the liquid supply component through a locking component.

2. The plant protection equipment for potato cultivation according to claim 1, characterized in that, The liquid supply assembly includes a liquid supply plate (3), one end of which is detachably connected to the cultivation support via a docking assembly. The liquid supply plate (3) has a second sliding groove (31) on both sides. A limiting groove (32) is provided on the inner sidewall of each of the two second sliding grooves (31). One end of each of the two third sliders (51) slides on the inner wall of the two limiting grooves (32). A driving assembly is fixed at the end of the liquid supply plate (3) away from the docking assembly. The drive assembly includes a second motor (312), a second lead screw (313), and a slide bar (314). The second motor (312) is fixed to one end of the liquid supply plate (3) away from the docking assembly. The two ends of the second lead screw (313) rotate on the inner wall of one of the second slide grooves (31). The two ends of the slide bar (314) are fixedly connected to the inner wall of the other second slide groove (31). The output end of the second motor (312) passes through the surface of the liquid supply plate (3) and is fixedly connected to one end of the second lead screw (313). One of the third sliders (51) is threadedly connected to the surface of the second lead screw (313). The other third slider (51) slides on the surface of the slide bar (314). The bottoms of the two third sliders (51) are fixedly connected by a moving block (5). The moving block (5) is located directly below the liquid supply plate (3).

3. The plant protection equipment for potato cultivation according to claim 2, characterized in that, The inner walls of the two third sliders (51) each have a mounting cavity (511), and one end of the two mounting plates (52) rotates on the inner walls of the two mounting cavities (511) respectively via two rotating shafts (53); Both dust supply assemblies include a dust supply pipe (521), the two dust supply pipes (521) are respectively fixed to the top of the two mounting plates (52), and the other end of the two dust supply pipes (521) is fixedly connected to an external device; Magnet 1 (54) is fixed on the side of each of the two mounting plates (52) near the rotating shaft (53), and magnet 2 (55) is fixed on the inner sidewall of each of the two mounting cavities (511). The two magnet 1 (54) are respectively magnetically attracted to the two magnet 2 (55).

4. The plant protection equipment for potato cultivation according to claim 3, characterized in that, The locking assembly includes a locking block (522). The liquid supply plate (3) has two locking slots (311) at one end away from the docking assembly. The two mounting plates (52) are each fixed with a locking block (522) at one end away from the rotating shaft (53). One end of the two locking blocks (522) is respectively fastened into the two locking slots (311).

5. The plant protection equipment for potato cultivation according to claim 4, characterized in that, The cultivation support includes a mounting frame (1), a breeding plate (11) is fixed to the top of the mounting frame (1), a side plate (12) is fixed to the outside of the mounting frame (1), a first groove (121) is provided on the top of the side plate (12), a transverse groove (122) is provided through the inner wall of the first groove (121), a first motor (13) is fixed to the outside of the side plate (12), a first lead screw (131) is rotatably provided on the inner wall of the first groove (121), and the output end of the first motor (13) passes through... The first slider (2) is threadedly connected to the surface of the side plate (12) and to one end of the first lead screw (131). The first slider (2) slides on the inner wall of the first slide groove (121). One end of the first slider (2) passes through the surface of the transverse groove (122) and is provided with an installation groove (21). The top of the first slider (2) is provided with a first slot (211). The first slot (211) is connected to the interior of the installation groove (21).

6. The plant protection equipment for potato cultivation according to claim 5, characterized in that, The docking assembly includes a second slider (22), one end of which is fixedly connected to one end of the liquid supply plate (3). A second slot (221) is provided at the end of the second slider (22) away from the liquid supply plate (3). The size of the first slot (211) matches that of the second slot (221). The end of the second slider (22) away from the liquid supply plate (3) is inserted into the mounting groove (21). A plug plate (23) is inserted into the top of the first slot (211). The bottom of the plug plate (23) passes through the second slot (221) and the mounting groove (21) in sequence and extends into the first slot (211).

7. The plant protection equipment for potato cultivation according to claim 6, characterized in that, The bottom of the moving block (5) is also provided with a convex groove (512). The bottom of the liquid supply plate (3) is fixed with a plurality of equally spaced nozzles (34). The size of the convex groove (512) matches that of the nozzles (34). The top of the liquid supply plate (3) is connected to a connecting pipe (33). The interior of the liquid supply plate (3) forms a cavity (4). The plurality of nozzles (34) are connected to the interior of the connecting pipe (33) through the cavity (4).

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