Energy-saving rainwater dust falling device for construction

Abstract

The invention relates to the technical field of construction dust falling, in particular to an energy-saving rainwater dust falling device for construction, rainwater falling during raining can be collected through a water collecting hopper, and the collected rainwater can downwards flow into a water spraying plate to be stored for being sprayed out by an atomizing nozzle for dust falling, so that the rainwater can be collected and stored as a raw material for dust falling; meanwhile, the mounting groove or the mounting base is connected with an external tap water pipe, so that the external tap water pipe can pump water into the water sprinkling pipe, when the tap water reaches the interior of the water sprinkling pipe, the tap water can fall down through the separation net to form a water curtain, the dust separation effect can be achieved through the water curtain, and the dust falling effect can be further improved; the tap water forming the water curtain can fall down into the water collecting hopper and then flow into the water spraying plate to be stored for being sprayed out by the atomizing nozzle, so that the tap water can be used for the second time, the tap water is saved, the dust falling effect is improved, and the utilization rate of resources can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of construction dust reduction, and in particular to an energy-saving rainwater dust reduction device for construction. Background Art

[0002] During the construction of a construction project, a large amount of construction materials need to be transported from the outside or the soil excavated from the construction site needs to be transported to the outside. During the whole process, a large amount of dust will be generated in the construction site. Generally, tap water is used as raw material in construction sites, and then sprayed out through a dust reduction device to form water mist to reduce the dust.

[0003] The current dust suppression devices have the following deficiencies when used:

[0004] (1) The dust suppression device can only use tap water as the raw material for dust suppression. In general construction sites, water mist needs to be used all the time to suppress dust, which wastes tap water.

[0005] (2) The dust suppression device cannot reuse tap water;

[0006] (3) The dust suppression device has a single function and can only be used for dust suppression;

[0007] Therefore, we propose an energy-saving rainwater dust suppression device for construction to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an energy-saving rainwater dust reduction device for construction.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is: an energy-saving rainwater dust reduction device for construction, comprising: a sprinkler plate, a water collecting bucket, a moving wheel, a connecting seat, a positioning seat, a handle, a transparent window, a water pump, a connecting pipe, a water storage pipe, a water outlet pipe, an atomizing nozzle, a connecting seat, a through groove, a filter frame, a filter screen, a support rod, a sprinkler pipe, a partition, a mounting groove, a mounting seat, a thread, and a threaded seat. The top of the sprinkler plate is fixedly installed with a water collecting bucket, and the four corners of the bottom of the sprinkler plate are fixedly installed with moving wheels. The left edge of the front of the sprinkler plate is fixedly installed with a connecting seat, and the right edge of the front of the sprinkler plate is fixedly installed with a positioning seat. The positioning seat is rotatably connected with a handle up and down, and a transparent window is fixedly installed on the front of the sprinkler plate. A water pump is fixedly installed at the bottom of the sprinkler plate, a connecting pipe is fixedly installed at the water outlet end of the top of the water pump, and a water storage pipe is fixedly installed on the top of the connecting pipe. , multiple water outlet pipes are fixedly installed on both sides of the water storage pipe, and the water outlet pipes are all penetrated with the outside of the sprinkler plate, multiple atomizing nozzles are movably installed on the surface of both sides of the sprinkler plate, connecting seats are fixedly installed on the tail ends of the atomizing nozzles, and the connecting seats are movably installed inside the water outlet pipes, a through groove is fixedly installed on the top of the sprinkler plate, and one side of the through groove is penetrated with the outside of the sprinkler plate, a filter frame is movably installed inside the sprinkler plate, and a filter screen is fixedly installed on the bottom of the filter frame, support rods are fixedly installed on both sides of the top of the water collecting bucket, a sprinkler pipe is fixedly installed on the top of the support rod, a partition net is fixedly installed at the bottom of the sprinkler pipe, a mounting groove is fixedly installed inside the right side of the sprinkler pipe, a mounting seat is fixedly installed on the left side of the sprinkler pipe, threads are fixedly installed on both sides of the surface of the sprinkler pipe, and a threaded seat is installed on the right side of the surface of the sprinkler pipe.

[0010] Preferably, the cross-section of the water collecting bucket is arranged in an outward-facing "X"-shaped structure, and the water collecting bucket penetrates the interior of the sprinkler plate.

[0011] Preferably, the filter frame and the interior of the through groove are inlaid structures, and the middle of the filter frame is arranged in a concave structure.

[0012] Preferably, the atomizing nozzles are distributed in an equidistant structure, and the connecting seat at the tail end of the atomizing nozzle is connected to the inner thread of the water outlet pipe.

[0013] Preferably, the sprinkler pipe is arranged at a central position on the top of the water collecting bucket, and the partition net corresponds to the middle part of the interior of the water collecting bucket in the upper and lower parts.

[0014] Preferably, the connecting seat corresponds to the positioning seat, and the inner side of the handle is matched with the edge of the connecting seat.

[0015] Preferably, the mounting seat and the interior of the mounting groove are inlaid structures, and the threaded seat is threadedly connected to the threads on both sides of the surface of the sprinkler pipe.

[0016] Preferably, the transparent window corresponds to the inside of the sprinkler plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Rainwater falling during rain can be collected by a water collecting bucket, and the collected rainwater can flow downward into the sprinkler board for storage, and then the rainwater stored in the sprinkler board can be pumped into the connecting pipe by a water pump, and the rainwater can flow into the water storage pipe through the connecting pipe, and then the rainwater in the water storage pipe can flow into each outlet pipe, and finally the rainwater can be sprayed out through an atomizing nozzle, so that the formed water mist can have a dust reduction effect on dust, so that the rainwater can be collected and stored as a raw material for dust reduction, thereby saving tap water and improving resource utilization.

[0019] (2) The installation groove or the installation seat is connected to the external tap water pipe so that the external tap water pipe can pump water into the sprinkler pipe. When the tap water reaches the inside of the sprinkler pipe, the tap water can fall down through the partition net to form a water curtain, so that the water curtain can have the effect of isolating dust, thereby further improving the dust reduction effect. The tap water forming the water curtain can fall down into the water collecting bucket, and then flow into the sprinkler plate for storage for spraying by the atomizing nozzle, so that the tap water can be reused for a second time, which saves tap water and improves the dust reduction effect, thereby improving the utilization rate of resources.

[0020] (3) The sprinkler plates are spliced ​​together so that the connection seat can correspond to the positioning seat, and then the handle is rotated so that the handle can be close to the edge of the connection seat, so that the sprinkler plates can be locked and connected in pairs to prevent separation. When the sprinkler plates need to be moved, the handle is also convenient for pulling the sprinkler plates to move, making the handle multifunctional. When multiple sprinkler plates are spliced ​​together, the sprinkler plates can be used as enclosures to isolate the construction site from the external environment. Therefore, the sprinkler plates can have a dust reduction effect and can also be used as enclosures, which can improve functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention as a whole;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall split structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the splicing structure of the overall sprinkler plate of the present invention;

[0025] Figure 5 The present invention is the whole Figure 4 Schematic diagram of the structure in cross-section from the main view;

[0026] Figure 6 It is a right side cross-sectional structural schematic diagram of FIG1 of the present invention as a whole;

[0027] Figure 7 FIG1 is a schematic diagram of a top view and cross-sectional structure of the present invention as a whole;

[0028] Figure 8 The present invention is the whole Figure 3 A is an enlarged structural diagram;

[0029] Fig. 9 The present invention is the whole Figure 3 The enlarged structural diagram at B in FIG.

[0030] Fig.10 The present invention is the whole Figure 4 The enlarged structural diagram at C in FIG.

[0031] Fig.11 The present invention is the whole Figure 5 The enlarged structural diagram at D in FIG.

[0032] Fig.12 The present invention is the whole Figure 5 The enlarged structural diagram at E in FIG.

[0033] Fig.13 The present invention is the whole Figure 6 The enlarged structural diagram at G in FIG.

[0034] Fig.14 The present invention is the whole Figure 7 The enlarged structural diagram at H in FIG.

[0035] In the figure: 1. sprinkler plate; 2. water collecting bucket; 3. moving wheel; 4. connecting seat; 5. positioning seat; 6. handle; 7. transparent window; 8. water pump; 9. connecting pipe; 10. water storage pipe; 11. water outlet pipe; 12. atomizing nozzle; 13. connecting seat; 14. through groove; 15. filter frame; 16. filter screen; 17. support rod; 18. sprinkler pipe; 19. partition screen; 20. installation groove; 21. installation seat; 22. thread; 23. thread seat. DETAILED DESCRIPTION

[0036] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0037] like Figure 1-14The energy-saving rainwater dust suppression device for construction shown in the figure includes: a sprinkler plate 1, a water collecting bucket 2, a moving wheel 3, a connecting seat 4, a positioning seat 5, a handle 6, a transparent window 7, a water pump 8, a connecting pipe 9, a water storage pipe 10, a water outlet pipe 11, an atomizing nozzle 12, a connecting seat 13, a through groove 14, a filter frame 15, a filter screen 16, a support rod 17, a sprinkler pipe 18, a partition screen 19, a mounting groove 20, a mounting seat 21, a thread 22, a threaded seat 23, and a top fixed portion of the sprinkler plate 1. A water collecting bucket 2 is fixedly installed, moving wheels 3 are fixedly installed at the four corners of the bottom of the sprinkler plate 1, a connecting seat 4 is fixedly installed on the left edge of the front of the sprinkler plate 1, a positioning seat 5 is fixedly installed on the right edge of the front of the sprinkler plate 1, and the positioning seat 5 is connected with a handle 6 for rotating up and down, a transparent window 7 is fixedly installed on the front of the sprinkler plate 1, a water pump 8 is fixedly installed at the bottom of the sprinkler plate 1, a connecting pipe 9 is fixedly installed on the water outlet end of the top of the water pump 8, and a water storage pipe 10 is fixedly installed on the top of the connecting pipe 9 A plurality of water outlet pipes 11 are fixedly installed on both sides of the water storage pipe 10, and the water outlet pipes 11 are all penetrated with the outside of the water sprinkling plate 1, a plurality of atomizing nozzles 12 are movably installed on the surface of both sides of the water sprinkling plate 1, and a connecting seat 13 is fixedly installed on the tail end of the atomizing nozzle 12, and the connecting seat 13 is movably installed inside the water outlet pipe 11, a through groove 14 is fixedly installed on the top of the water sprinkling plate 1, and one side of the through groove 14 is penetrated with the outside of the water sprinkling plate 1, a filter frame 15 is movably installed inside the water sprinkling plate 1, and a filter screen 16 is fixedly installed at the bottom of the filter frame 15, support rods 17 are fixedly installed on both sides of the top of the water collecting bucket 2, a water sprinkling pipe 18 is fixedly installed on the top of the support rod 17, a partition net 19 is fixedly installed at the bottom of the water sprinkling pipe 18, a mounting groove 20 is fixedly installed inside the right side of the water sprinkling pipe 18, a mounting seat 21 is fixedly installed on the left side of the water sprinkling pipe 18, threads 22 are fixedly installed on both sides of the surface of the water sprinkling pipe 18, and a threaded seat 23 is threadedly installed on the right side of the surface of the water sprinkling pipe 18.

[0038] In this embodiment, the cross section of the water collecting bucket 2 is arranged in an outward-facing "X"-shaped structure, and the water collecting bucket 2 penetrates the interior of the water sprinkling plate 1 .

[0039] During specific use, the water collecting bucket 2 arranged in an outward-facing 8-shaped structure can increase the area for collecting rainwater, so that rainwater falling during rain can be collected by the water collecting bucket 2, and the collected rainwater can flow downward into the interior of the sprinkler plate 1 for storage.

[0040] In this embodiment, the filter frame 15 and the interior of the through slot 14 are inlaid structures, and the middle of the filter frame 15 is arranged in a concave structure.

[0041] During specific use, the filter screen 16 on the filter frame 15 can filter the umbrellas flowing into the sprinkler plate 1, thereby preventing impurities and fallen leaves from the outside from falling into the sprinkler plate 1, and the middle part of the filter frame 15 is provided with a concave structure, so that the filtered impurities and fallen leaves can be collected into the filter frame 15, thereby facilitating the cleaning of the impurities and leaves, and the filter frame 15 is embedded in the through groove 14, so that the filter frame 15 is easy to disassemble and install.

[0042] In this embodiment, the atomizing nozzles 12 are arranged in an equidistant structure, and the connecting seat 13 at the rear end of the atomizing nozzle 12 is connected to the inner thread of the water outlet pipe 11 .

[0043] During specific use, the rainwater stored in the sprinkler plate 1 can be pumped into the connecting pipe 9 through the water pump 8, and the rainwater can flow into the water storage pipe 10 through the connecting pipe 9, and then the rainwater in the water storage pipe 10 can flow into each water outlet pipe 11, and finally the rainwater can be atomized and sprayed out through the atomizing nozzle 12, so that the formed water mist can have the effect of reducing dust.

[0044] The connection seat 13 at the tail end of the atomizing nozzle 12 is threadedly installed into the inside of the water outlet pipe 11, so that the atomizing nozzle 12 is easy to disassemble, assemble and replace.

[0045] In this embodiment, the watering pipe 18 is arranged at the center of the top of the water collecting bucket 2, and the partition net 19 corresponds to the middle part of the water collecting bucket 2 in the upper and lower parts.

[0046] During specific use, it is connected to the external tap water pipe through the installation groove 20 or the installation seat 21, so that the external tap water pipe can pump water into the sprinkler pipe 18. When the tap water reaches the inside of the sprinkler pipe 18, the tap water can fall down through the partition net 19 to form a water curtain, so that the water curtain can have the effect of dust isolation, thereby further improving the dust reduction effect, and the tap water forming the water curtain can fall down into the water collecting bucket 2, and then flow into the sprinkler plate 1 for storage for spraying by the atomizing nozzle 12, so that the tap water can be used for a second time, which can save tap water and improve the utilization rate of resources.

[0047] When the mounting groove 20 is connected to an external water pipe, the interior of the mounting seat 21 can be blocked by an external sealing seat to prevent the tap water from flowing out; when the mounting seat 21 is connected to an external water pipe, the interior of the mounting groove 20 can be blocked by an external sealing seat to prevent the tap water from flowing out.

[0048] In this embodiment, the connecting seat 4 corresponds to the positioning seat 5 , and the inner side of the handle 6 is matched with the edge of the connecting seat 4 .

[0049] During specific use, the sprinkler plates 1 are spliced ​​together accordingly so that the connecting seat 4 can correspond to the positioning seat 5, and then the handle 6 is rotated so that the handle 6 can be close to the edge of the connecting seat 4, so that the sprinkler plates 1 can be locked and connected in pairs to prevent separation, and when the sprinkler plates 1 need to be moved, the handle 6 is also convenient for pulling the sprinkler plates 1 to move, so that the handle 6 has multifunctionality, and when multiple sprinkler plates 1 are spliced ​​together, the sprinkler plates 1 can be used as enclosures to isolate the construction site from the external environment, so that the sprinkler plates 1 can have a dust reduction effect and can also be used as enclosures, which can improve functionality.

[0050] In this embodiment, the mounting seat 21 and the interior of the mounting groove 20 are inlaid structures, and the threaded seat 23 is threadedly connected with the threads 22 on both sides of the surface of the sprinkler pipe 18.

[0051] During specific use, when multiple sprinkler boards 1 are spliced ​​together, the sprinkler pipes 18 can also be spliced ​​together accordingly, and the mounting seat 21 can be embedded in the mounting groove 20, and then by rotating the threaded seat 23, the sprinkler pipes 18 can be locked and connected in pairs, so that when multiple sprinkler boards 1 are spliced ​​together, the sprinkler pipes 18 on the sprinkler boards 1 can also be spliced ​​together accordingly, so that when the mounting groove 20 or the mounting seat 21 on the sprinkler pipe 18 at the tail end is connected to the external tap water pipe, the tap water can flow into each sprinkler pipe 18 in an orderly manner, so that a water curtain can appear on the top of each sprinkler board 1 at the same time.

[0052] In this embodiment, the transparent window 7 corresponds to the interior of the sprinkler plate 1 .

[0053] When in use, the transparent window 7 can be used to easily know the amount of water in the watering plate 1. The working principle of the energy-saving rainwater dust suppression device for construction mentioned in the present invention is as follows:

[0054] When in use, the watering plate 1 can be moved to a designated location by the moving wheels 3;

[0055] Then, the water collecting bucket 2 with an outward-facing 8-shaped structure can increase the rainwater collection area, so that the rainwater falling during rain can be collected by the water collecting bucket 2, and the collected rainwater can flow downward into the sprinkler plate 1 for storage, and at the same time, the filter screen 16 on the filter frame 15 can filter the umbrella flowing into the sprinkler plate 1, which can prevent impurities and fallen leaves from the outside from falling into the sprinkler plate 1, and the middle part of the filter frame 15 is arranged in a concave structure, so that the filtered impurities and fallen leaves can be collected into the filter frame 15, so that it is convenient to clean the impurities and leaves, and the filter frame 15 is embedded in the through groove 14, so that the filter frame 15 is easy to disassemble and install.

[0056] At the same time, the rainwater stored in the watering plate 1 can be pumped into the connecting pipe 9 through the water pump 8, and the rainwater can flow into the water storage pipe 10 through the connecting pipe 9, and then the rainwater in the water storage pipe 10 can flow into each water outlet pipe 11, and finally the rainwater can be sprayed out through the atomizing nozzle 12, so that the formed water mist can have the effect of reducing dust;

[0057] At the same time, the installation groove 20 or the installation seat 21 is connected to the external tap water pipe, so that the external tap water pipe can pump water into the sprinkler pipe 18. When the tap water reaches the inside of the sprinkler pipe 18, the tap water can fall down through the partition net 19 to form a water curtain, so that the water curtain can play a dust-proof effect, thereby further improving the dust reduction effect, and the tap water forming the water curtain can fall down into the water collecting bucket 2, and then flow into the sprinkler plate 1 for storage for spraying by the atomizing nozzle 12, so that the tap water can be reused for a second time, which can save tap water and improve the utilization rate of resources;

[0058] At the same time, the sprinkler plates 1 are spliced ​​together correspondingly so that the connection seat 4 can correspond to the positioning seat 5, and then the handle 6 is rotated so that the handle 6 can be close to the edge of the connection seat 4, so that the sprinkler plates 1 can be locked and connected in pairs to prevent separation, and when the sprinkler plates 1 need to be moved, the handle 6 is also convenient for pulling the sprinkler plates 1 to move, so that the handle 6 has multifunctionality, and when multiple sprinkler plates 1 are spliced ​​together, the sprinkler plates 1 can be used as enclosures to isolate the construction site from the external environment, so that the sprinkler plates 1 can have a dust reduction effect and can also be used as enclosures, which can improve functionality;

[0059] At the same time, when multiple sprinkler boards 1 are spliced ​​together, the sprinkler pipes 18 can also be spliced ​​together accordingly, and the mounting seat 21 can be embedded in the mounting groove 20, and then by rotating the threaded seat 23, the sprinkler pipes 18 can be locked and connected in pairs, so that when multiple sprinkler boards 1 are spliced ​​together, the sprinkler pipes 18 on the sprinkler boards 1 can also be spliced ​​together accordingly, so that when the mounting groove 20 or the mounting seat 21 on the sprinkler pipe 18 at the tail end is connected to the external tap water pipe, the tap water can flow into each sprinkler pipe 18 in an orderly manner, so that a water curtain can appear on the top of each sprinkler board 1 at the same time.

[0060] 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 to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An energy-saving rainwater dust suppression device for construction, comprising: A water sprinkling plate (1), a water collecting bucket (2), a moving wheel (3), a connecting seat (4), a positioning seat (5), a handle (6), a transparent window (7), a water pump (8), a connecting pipe (9), a water storage pipe (10), a water outlet pipe (11), an atomizing nozzle (12), a connecting seat (13), a through groove (14), a filter frame (15), a filter screen (16), a supporting rod (17), a water sprinkling pipe (18), a partition screen (19), a mounting groove (20), a mounting seat (21), a thread (22), and a threaded seat (23), wherein the water sprinkling plate (1) is fixedly mounted with a water collecting bucket (2) on the top thereof, The four corners of the bottom of the watering plate (1) are fixedly mounted with moving wheels (3); the left edge of the front of the watering plate (1) is fixedly mounted with a connecting seat (4); the right edge of the front of the watering plate (1) is fixedly mounted with a positioning seat (5); the positioning seat (5) is connected with a handle (6) for rotating up and down; the front of the watering plate (1) is fixedly mounted with a transparent window (7); the bottom of the watering plate (1) is fixedly mounted with a water pump (8); the top of the water outlet of the water pump (8) is fixedly mounted with a connecting pipe (9); the top of the connecting pipe (9) is fixedly mounted with a water storage pipe (10); the water storage pipe (10) is fixedly mounted with a water pump (8); 0) are fixedly installed with a plurality of water outlet pipes (11) on both sides, and the water outlet pipes (11) are all penetrated with the outside of the water sprinkling plate (1), a plurality of atomizing nozzles (12) are movably installed on the surfaces of both sides of the water sprinkling plate (1), a connecting seat (13) is fixedly installed at the tail end of each atomizing nozzle (12), and the connecting seat (13) is movably installed inside the water outlet pipe (11), a through groove (14) is fixedly installed at the top of the inside of the water sprinkling plate (1), and one side of the through groove (14) is penetrated with the outside of the water sprinkling plate (1), and a filter frame (15) is movably installed inside the water sprinkling plate (1), A filter screen (16) is fixedly installed at the bottom of the filter frame (15), support rods (17) are fixedly installed on both sides of the top of the water collecting bucket (2), a sprinkler pipe (18) is fixedly installed on the top of the support rod (17), a partition net (19) is fixedly installed at the bottom of the sprinkler pipe (18), a mounting groove (20) is fixedly installed inside the right side of the sprinkler pipe (18), a mounting seat (21) is fixedly installed on the left side of the sprinkler pipe (18), threads (22) are fixedly installed on both sides of the surface of the sprinkler pipe (18), and a threaded seat (23) is threadedly installed on the right side of the surface of the sprinkler pipe (18).

2. The energy-saving rainwater dust suppression device for construction according to claim 1 is characterized in that: The cross section of the water collecting bucket (2) is arranged in an outward-facing "X"-shaped structure, and the water collecting bucket (2) penetrates the interior of the water sprinkling plate (1).

3. The energy-saving rainwater dust suppression device for construction according to claim 1 is characterized in that: The filter frame (15) and the interior of the through groove (14) are inlaid structures, and the middle part of the filter frame (15) is arranged in a concave structure.

4. The energy-saving rainwater dust suppression device for construction according to claim 1 is characterized in that: The atomizing nozzles (12) are arranged in an equidistant structure, and the connecting seat (13) at the rear end of the atomizing nozzle (12) is threadedly connected to the inside of the water outlet pipe (11).

5. The energy-saving rainwater dust suppression device for construction according to claim 1, characterized in that: The watering pipe (18) is arranged at the center of the top of the water collecting bucket (2), and the partition net (19) corresponds to the middle part of the water collecting bucket (2) from top to bottom.

6. The energy-saving rainwater dust suppression device for construction according to claim 1, characterized in that: The connecting seat (4) corresponds to the positioning seat (5), and the inner side of the handle (6) is matched with the edge of the connecting seat (4).

7. The energy-saving rainwater dust suppression device for construction according to claim 1, characterized in that: The mounting seat (21) and the interior of the mounting groove (20) are inlaid structures, and the threaded seat (23) is threadedly connected to the threads (22) on both sides of the surface of the sprinkler pipe (18).

8. The energy-saving rainwater dust suppression device for construction according to claim 1, characterized in that: The transparent window (7) corresponds to the interior of the sprinkler plate (1).

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