A visual communication device for displaying landscape design

By injecting translucent solutions of different colors between the transparent plates of the landscape design model, and controlling the solution flow using water pumps and control valve systems, the problem of not being able to display different light-effect environments in the prior art is solved, and a diversified light-effect display effect is achieved.

CN112190085BActive Publication Date: 2025-07-22JIANGSU IMPRESSION GANTU CULTURE TECH CO LTD
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Patent Information

Application Number
CN202011086277.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-10-12
Publication Date
2025-07-22
Estimated Expiration
2040-10-12

AI Technical Summary

Technical Problem

Landscape design models in the prior art cannot show the state of different light effects environments, such as hazy light in foggy days or golden light in sunset.

Method used

By injecting translucent solutions of different colors between the double-layer transparent plates, the solution flow is controlled by using the water pump and control valve system to achieve filtering effects of different colors and simulate model display in different light environments.

Benefits of technology

The appearance effects under different light effects are realized in the landscape design model, enhancing the diversity and authenticity of the display.

✦ Generated by Eureka AI based on patent content.

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Abstract

A visual communication device for displaying landscape design. The present invention relates to the technical field of display and publicity devices. A fixed seat is fixedly arranged on a base. The upper end of the front side wall of the fixed seat is hinged with a panel frame through a hinge. Two transparent plates are fixedly embedded in the panel frame. The outlet end of a water pump is flange-connected with a first connecting pipe. A first water tank is fixedly arranged on the fixed seat. The end of the first connecting pipe is fixedly arranged through the upper side wall of the first water tank after passing through. The lower end of the side wall of the first water tank is provided with a diversion pipe. After the other end of the diversion pipe passes through the upper transparent plate, it is communicated with a cavity. It filters light through the bilateral transparent plates, and by filling light-transmitting solutions of different colors between the double-layer plates, different color light filtering effects are realized, thereby simulating the display effects of models under different light environments.
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Description

Technical Field

[0001] The present invention relates to the technical field of display and publicity devices, and particularly relates to a visual communication device for displaying landscape design. Background Art

[0002] In order to display the rich spatial structure characteristics in display design, landscape design will adopt the method of establishing a miniature model for display, which can display the design characteristics through a stereoscopic model reduced in proportion, so as to display the characteristics in the design in all directions; in the prior art, when establishing a model for display, only the model can be directly observed, and the state of the model in different light effect environments cannot be displayed, such as the hazy light environment in foggy days or the golden light in the setting sun, which needs to be improved. Summary of the Invention

[0003] The purpose of the present invention is to provide a visually communicative device for displaying landscape design that is reasonably designed and easy to use, which filters light through transparent plates on both sides, and realizes different color light filtering effects by filling light-transmitting solutions of different colors between the double-layer plates, thereby simulating the display effects of the model in different light environments.

[0004] To achieve the above object, the technical solution adopted by the present invention is: it includes a base, side guards, a fixing seat, a panel frame, and transparent plates. Among them, side guards are fixedly arranged around the upper surface of the base, a fixing seat is fixedly arranged on the base, and the fixing seat is fixedly arranged on the rear side wall of the side guards. The upper end of the front side wall of the fixing seat is hinged with a panel frame through a hinge, and the panel frame covers the upper part of the side guards. Two transparent plates are fixedly embedded in the panel frame. There is a cavity between the upper and lower transparent plates. Supplementary lights are fixedly arranged on the inner side wall of the side guards; a bracket is fixedly arranged on the lower surface of the base, a water pump is fixedly arranged on the bracket, the outlet end of the water pump is flange-connected with a first connecting pipe, a first water tank is fixedly arranged on the fixing seat, and the end of the first connecting pipe passes through and is fixed on the upper side wall of the first water tank. A diversion pipe passes through the lower side wall of the first water tank, and the other end of the diversion pipe passes through the upper transparent plate and is communicated with the cavity. Several second water tanks are fixedly arranged on the bracket. A second connecting pipe is fixedly arranged through the lower end of the right side wall of each second water tank. The inlet end of the water pump is flange-connected with a first main water pipe, and the end of the first main water pipe is closed. The end of the second connecting pipe passes through and is fixed on the first main water pipe. A first control valve is connected in series on the second connecting pipe. A second main water pipe is fixedly arranged on the bracket. One end of the second main water pipe passes through the lower transparent plate and is communicated with the cavity. The other end of the second main water pipe is closed. A third connecting pipe is fixedly arranged through the upper side wall of the second water tank, and the other end of the third connecting pipe passes through and is fixed on the second main water pipe. A second control valve is connected in series on the third connecting pipe.

[0005] Furthermore, the upper and lower transparent plates are arranged in parallel. The rear end of the transparent plate is inclined downward. A drain pipe is fixedly arranged through the front side edge of the upper transparent plate, and the other end of the drain pipe is fixedly arranged through the upper end of the side wall of the first water tank. The cavity forms a structure with the rear end inclined downward. When adding water to the cavity, the front end of the cavity is filled, and then the residual air in the cavity is discharged into the first water tank through the drain pipe.

[0006] Furthermore, a constant pressure valve is fixedly arranged through the upper side wall of the second water tank.

[0007] Furthermore, an adjustment box is fixedly arranged on the bracket, and the front end of the adjustment box is open. The adjustment box is arranged above the second water tank. The second connecting pipe is arranged through the right end of the adjustment box, and the first control valve is arranged at the right end inside the adjustment box. The third connecting pipe is arranged through the left end of the adjustment box, and the second control valve is arranged at the left end inside the adjustment box. Symmetrically fixed on the upper and lower side edges of the front port of the adjustment box are sliding grooves, and a cover plate is slidably arranged in the sliding grooves, and the cover plate covers the front port of the adjustment box. Operation openings are provided at both the left and right ends of the cover plate. The first control valve is arranged behind the operation opening on the right side, and the second control valve is arranged behind the operation opening on the left side. When it is necessary to open the first control valve on one pipeline, move the cover plate to expose it from the operation opening, and then the second control valve is exposed at the same time, so as to ensure that the first control valve and the second control valve on the same pipeline are exposed for operation.

[0008] Furthermore, a connecting rod is movably arranged through the right side wall of the panel frame through a sealing ring, and the left end of the connecting rod is inserted into the cavity. A sealing plate is fixedly arranged at the left end of the connecting rod, and the sealing plate is arranged on the right side of the outlet end of the second connecting pipe. The upper and lower side edges of the sealing plate respectively abut against the inner side walls of the upper and lower transparent plates, and the front and rear side edges of the sealing plate respectively abut against the front and rear inner side walls of the panel frame. The connecting rod pushes the sealing plate, and then a part of the cavity is isolated from the first water tank through the sealing plate, so that the solution cannot enter this part of the cavity, and then a contrast observation is formed with the other cavities filled with the solution.

[0009] Furthermore, a light blocking plate is fixedly arranged on the inner side wall of the side guard plate, and the light blocking plate is arranged between the supplementary light and the panel frame. The light blocking plate blocks the light emitted by the supplementary light and irradiating the transparent plate.

[0010] The working principle of the present invention is as follows: A miniature model is built for landscape design on the base. After the miniature model is completed, the panel frame is closed. Then, the base, the side guard plates, and the transparent plates seal and protect the miniature model, and then the model is displayed. During the display process, additional lighting is provided by the supplementary light. During the display process, light-transmitting solutions of different colors are injected into the cavity formed between the upper and lower transparent plates, thereby forming filter effects of different colors. The solutions of different colors are stored in the second water tank. When it is necessary to inject the solution, the corresponding first control valve is opened, and the water pump is started. Then, the water pump pumps out the solution in the second water tank through the connected first main water pipe and the second connecting pipe and injects it into the first water tank. After the solution enters the first water tank, it is injected into the cavity through the diversion pipe. After the cavity is filled with the solution, the solution is evenly distributed to form a uniform color filter effect. When the solution in the cavity is emptied, the water pump is turned off, and the second control valve on the corresponding third connecting pipe is opened. Then, the solution in the cavity flows through the connected second main water pipe and the third connecting pipe and enters the second water tank. At this time, the excessive solution in the first water tank is supplemented and injected into the cavity through the diversion pipe and finally injected into the second water tank. When the solution emptying is completed, the first control valve and the second control valve are closed.

[0011] After adopting the above structure, the beneficial effects of the present invention are as follows:

[0012] 1. A double-layer transparent plate is arranged above the base through a panel frame, and a cavity is arranged between the double-layer transparent plates. The cavity is connected to the second water tank through a water pump, and each section of the water path connected to the second water tank is independently controlled. Then, light-transmitting solutions of different colors are stored in the second water tank. Then, by filling the cavity with solutions of different colors, filters of different colors are generated, and then the miniature model is filtered to display the appearance effect of the model under different light effects;

[0013] 2. The water pump is connected to the first water tank through a first connecting pipe, and the first water tank is connected to the cavity through a second diversion pipe. Then, the solution is sent into the first water tank through the water pump. Then, the solution in the first water tank naturally flows into the cavity, reducing the air bubbles in the solution entering the cavity. Then, the filter formed by the solution in the cavity has better light transmittance;

[0014] 3. The first control valve and the second control valve are both arranged in the adjustment box. A cover plate is arranged on the adjustment box, and an operation port is arranged on the cover plate. Then, by moving the cover plate, it can be ensured that the first control valve and the second control valve are simultaneously exposed from the two operation ports, ensuring the operation of the first control valve and the second control valve on the correct pipeline. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of the present invention.

[0017] Figure 2 is Figure 1 the right view of

[0018] Figure 3 is Figure 1 the top view of

[0019] Figure 4 is Figure 1 the A-A sectional view in

[0020] Figure 5 is Figure 4 the enlarged view of part B in

[0021] Explanation of reference numerals:

[0022] Base 1, side guard plate 2, fixed seat 3, panel frame 4, transparent plate 5, cavity 6, supplementary light 7, water pump 8, first connecting pipe 9, first water tank 10, diversion pipe 11, second connecting pipe 12, first main water pipe 13, first control valve 14, second main water pipe 15, third connecting pipe 16, second control valve 17, air vent pipe 18, constant pressure valve 19, adjustment box 20, sliding groove 21, cover plate 22, operation port 23, connecting rod 24, sealing plate 25, light blocking plate 26, second water tank 27, bracket 28. Detailed implementation manners

[0023] The following further illustrates the present invention in conjunction with the drawings.

[0024] Refer to, for example, Figures 1-5As shown in the figure, this specific embodiment includes a base 1, side guard plates 2, fixed seats 3, a panel frame 4, and a transparent plate 5. Among them, side guard plates 2 are riveted around the upper surface of the base 1, a fixed seat 3 is riveted on the base 1, and the fixed seat 3 is riveted on the rear side wall of the side guard plate 2. The upper end of the front side wall of the fixed seat 3 is hinged with a panel frame 4 through a hinge, and the panel frame 4 is arranged to cover the side guard plate 2. Two transparent plates 5 are fixedly embedded in the panel frame 4, and a cavity 6 is arranged between the upper and lower transparent plates 5. A supplementary light 7 is riveted on the inner side wall of the side guard plate 2; a bracket 28 is riveted on the lower surface of the base 1, a water pump 8 is riveted on the bracket 28, a first connecting pipe 9 is flange-connected to the outlet end of the water pump 8, a first water tank 10 is riveted on the fixed seat 3, and the end of the first connecting pipe 9 is fixedly arranged through the upper side wall of the first water tank 10. A diversion pipe 11 is arranged through the lower end of the side wall of the first water tank 10. After the other end of the diversion pipe 11 passes through the upper transparent plate 5, it is communicated with the cavity 6. Several second water tanks 27 are riveted on the bracket 28. A second connecting pipe 12 is fixedly arranged through the lower end of the right side wall of each second water tank 27. A first main water pipe 13 is flange-connected to the inlet end of the water pump 8, and the end of the first main water pipe 13 is closed. The end of the second connecting pipe 12 is fixedly arranged through the first main water pipe 13. A first control valve 14 is arranged in series on the second connecting pipe 12. A second main water pipe 15 is riveted on the bracket 28. One end of the second main water pipe 15 passes through the lower transparent plate 5 and is communicated with the cavity 6, and the other end of the second main water pipe 15 is closed. A third connecting pipe 16 is fixedly arranged through the upper side wall of the second water tank 27, the other end of the third connecting pipe 16 is fixedly arranged through the second main water pipe 15, and a second control valve 17 is arranged in series on the third connecting pipe 16;

[0025] An adjustment box 20 is riveted on the bracket 28, and the front end of the adjustment box 20 is open. The adjustment box 20 is arranged above the second water tank 27. The second connecting pipe 12 penetrates through the right end of the adjustment box 20, and the first control valve 14 is arranged at the right end inside the adjustment box 20. The third connecting pipe 16 penetrates through the left end of the adjustment box 20, and the second control valve 17 is arranged at the left end inside the adjustment box 20. Sliding grooves 21 are symmetrically riveted on the upper and lower sides of the front port of the adjustment box 20. A cover plate 22 is slidably arranged in the sliding grooves 21, and the cover plate 22 covers the front port of the adjustment box 20. Operation ports 23 are opened at both the left and right ends of the cover plate 22. The first control valve 14 is arranged behind the operation port 23 on the right side, and the second control valve 17 is arranged behind the operation port 23 on the left side. Moving the cover plate 22 exposes the first control valve 14 and the second control valve 17 on the same pipeline, thereby preventing the valves on different pipelines from being accidentally opened and preventing the solution from mixing. The upper and lower transparent plates 5 are arranged in parallel, and the rear ends of the transparent plates 5 are inclined downward. A vent pipe 18 is fixedly penetrated through the front side edge of the upper transparent plate 5, and the other end of the vent pipe 18 is fixedly penetrated through the upper end side wall of the first water tank 10. The vent pipe 18 can discharge the residual air in the cavity 6 when injecting the solution into the cavity 6. A constant pressure valve 19 is fixedly penetrated through the upper side wall of the second water tank 27. A connecting rod 24 is movably penetrated through the right side wall of the panel frame 4 through a sealing ring, and the left end of the connecting rod 24 is inserted into the cavity 6. A sealing plate 25 is riveted at the left end of the connecting rod 24, and the sealing plate 25 is arranged on the right side of the outlet end of the second connecting pipe 12. The upper and lower side edges of the sealing plate 25 respectively abut against the inner side walls of the upper and lower transparent plates 5, and the front and rear side edges of the sealing plate 25 respectively abut against the front and rear inner side walls of the panel frame 4. By moving the sealing plate 25, a part of the cavity 6 is separated, so that this part remains transparent, and thus the contrast of different color filter effects can be carried out. A light blocking plate 26 is riveted on the inner side wall of the side guard plate 2, and the light blocking plate 26 is arranged between the supplementary light 7 and the panel frame 4.

[0026] The working principle of this specific embodiment is as follows: A miniature model of landscape design is created on the base 1. After the miniature modeling is completed, the panel frame 4 is closed. Then, the base 1, the side guard plates 2, and the transparent plate 5 protect the miniature modeling in a sealed manner, and then the modeling is displayed. During the display process, additional lighting is provided by the supplementary light 7. During the display process, light-transmitting solutions of different colors are injected into the cavity 6 formed between the upper and lower transparent plates 5, thereby forming filter effects of different colors. The solutions of different colors are stored in the second water tank 27. When it is necessary to inject the solution, the corresponding first control valve 14 is opened, and the water pump 8 is started. Then, the water pump 8 extracts the solution in the second water tank 27 through the connected first main water pipe 13 and the second connecting pipe 12 and injects it into the first water tank 10. After the solution enters the first water tank 10, it is injected into the cavity 6 through the diversion pipe 11. After the cavity 6 is filled with the solution, the solution is evenly distributed to form a uniform color filter effect. When emptying the solution in the cavity 6, the water pump 8 is turned off, and the second control valve 17 on the corresponding third connecting pipe 16 is opened. Then, the solution in the cavity 6 flows through the connected second main water pipe 15 and the third connecting pipe 16 and enters the second water tank 27. At this time, the excess solution in the first water tank 10 is supplemented and injected into the cavity 6 through the diversion pipe 11 and finally injected into the second water tank 27. When the solution emptying is completed, the first control valve 14 and the second control valve 17 are closed.

[0027] After adopting the above structure, the beneficial effects of this specific embodiment are as follows:

[0028] 1. A double-layer transparent plate 5 is arranged above the base 1 through the panel frame 4, and a cavity 6 is arranged between the double-layer transparent plates 5. The cavity 6 is connected to the second water tank 27 through the water pump 8, and each water path connected to the second water tank 27 is independently controlled. Then, light-transmitting solutions of different colors are stored in the second water tank 27. Then, by filling the cavity with solutions of different colors, filters of different color filters are generated, and then the miniature model is filtered to display the appearance effect of the model under different light effects.

[0029] 2. The water pump 8 is connected to the first water tank 10 through the first connecting pipe 9, and the first water tank 10 is connected to the cavity 6 through the second diversion pipe 11. Then, the solution is sent into the first water tank 10 through the water pump 8, and then the solution in the first water tank 10 naturally flows into the cavity 6, reducing the bubbles in the solution entering the cavity 6. Then, the filter formed by the solution in the cavity 6 has better light transmittance.

[0030] 3. The first control valve 14 and the second control valve 17 are both arranged in the adjustment box 20. A cover plate 22 is arranged on the adjustment box 20, and an operation port 23 is arranged on the cover plate 22. Then, by moving the cover plate 22, it can be ensured that the first control valve 14 and the second control valve 17 are simultaneously exposed from the two operation ports 23, ensuring the operation of the first control valve 14 and the second control valve 17 on the correct pipeline.

[0031] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention shall be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A visual communication device for displaying landscape design, characterized in that: It includes a base (1), side guard plates (2), a fixed seat (3), a panel frame (4), and a transparent plate (5). The side guard plates (2) are fixedly arranged around the upper surface of the base (1). The fixed seat (3) is fixedly arranged on the base (1), and the fixed seat (3) is fixedly arranged on the rear side wall of the side guard plate (2). The upper end of the front side wall of the fixed seat (3) is hinged with a panel frame (4) through a hinge, and the panel frame (4) covers the upper part of the side guard plate (2). Two transparent plates (5) are fixedly embedded in the panel frame (4). There is a cavity (6) between the upper and lower transparent plates (5). A supplementary light (7) is fixedly arranged on the inner side wall of the side guard plate (2); a bracket (28) is fixedly arranged on the lower surface of the base (1). A water pump (8) is fixedly arranged on the bracket (28). The outlet end of the water pump (8) is flange-connected with a first connecting pipe (9). A first water tank (10) is fixedly arranged on the fixed seat (3). The end of the first connecting pipe (9) is fixedly arranged through the upper side wall of the first water tank (10). A guide pipe (11) is arranged through the lower side wall of the first water tank (10). After the other end of the guide pipe (11) passes through the upper transparent plate (5), it is communicated with the cavity (6). Several second water tanks (27) are fixedly arranged on the bracket (28). A second connecting pipe (12) is fixedly arranged through the lower right side wall of each second water tank (27). The inlet end of the water pump (8) is flange-connected with a first main water pipe (13), and the end of the first main water pipe (13) is closed. The end of the second connecting pipe (12) is fixedly arranged through the first main water pipe (13). A first control valve (14) is arranged in series on the second connecting pipe (12). A second main water pipe (15) is fixedly arranged on the bracket (28). After one end of the second main water pipe (15) passes through the lower transparent plate (5), it is communicated with the cavity (6). The other end of the second main water pipe (15) is closed. A third connecting pipe (16) is fixedly arranged through the upper side wall of the second water tank (27). The other end of the third connecting pipe (16) is fixedly arranged through the second main water pipe (15). A second control valve (17) is arranged in series on the third connecting pipe (16); A connecting rod (24) is movably arranged through the right side wall of the panel frame (4) through a sealing ring, and the left end of the connecting rod (24) is inserted into the cavity (6). A sealing plate (25) is fixedly arranged at the left end of the connecting rod (24), and the sealing plate (25) is arranged on the right side of the outlet end of the second connecting pipe (12). The upper and lower sides of the sealing plate (25) are respectively abutted against the inner side walls of the upper and lower transparent plates (5). The front and rear sides of the sealing plate (25) are respectively abutted against the front and rear inner side walls of the panel frame (4). The connecting rod (24) pushes the sealing plate (25), and then a part of the cavity (6) is isolated from the first water tank (10) through the sealing plate (25). Then, the solution cannot enter this part of the cavity (6), and thus a contrast observation is formed with the remaining cavity (6) filled with the solution; Solutions of different colors are stored in the second water tank (27). When it is necessary to inject the solution, the corresponding first control valve (14) is opened and the water pump (8) is started. Then, the water pump (8) pumps out the solution in the second water tank (27) through the connected first main water pipe (13) and the second connecting pipe (12) and injects it into the first water tank (10). After the solution enters the first water tank (10), it is injected into the cavity (6) through the diversion pipe (11). After the cavity (6) is filled with the solution, the solution is evenly distributed to form a uniform color filter effect.

2. The visual communication device for displaying landscape design according to claim 1, characterized in that: The upper and lower transparent plates (5) are arranged in parallel. The rear end of the transparent plate (5) is inclined downward. A vent pipe (18) is fixedly arranged through the front side edge of the upper transparent plate (5). The other end of the vent pipe (18) is fixedly arranged through the upper end of the side wall of the first water tank (10). The cavity (6) forms a structure with the rear end inclined downward. When adding water to the cavity (6), the front end of the cavity (6) is filled, and then the residual air in the cavity (6) is discharged into the first water tank (10) through the vent pipe (18).

3. The visual communication device for displaying landscape design according to claim 1, characterized in that: A constant pressure valve (19) is fixedly arranged through the upper side wall of the second water tank (27).

4. A visual communication device for displaying landscape design according to claim 1, characterized in that: An adjustment box (20) is fixedly arranged on the bracket (28), and the front end of the adjustment box (20) is open. The adjustment box (20) is arranged above the second water tank (27). The second connecting pipe (12) passes through the right end of the adjustment box (20), and the first control valve (14) is arranged at the inner right end of the adjustment box (20). The third connecting pipe (16) passes through the left end of the adjustment box (20), and the second control valve (17) is arranged at the inner left end of the adjustment box (20). Symmetrically fixed chutes (21) are arranged on the upper and lower sides of the front port of the adjustment box (20). A cover plate (22) is slidably arranged in the chutes (21), and the cover plate (22) covers the front port of the adjustment box (20). Operation ports (23) are opened at both the left and right ends of the cover plate (22). The first control valve (14) is arranged at the rear side of the right operation port (23), and the second control valve (17) is arranged at the rear side of the left operation port (23). When it is necessary to open the first control valve (14) on a pipeline, the cover plate (22) is moved to expose it from the operation port (23), and then the second control valve (17) is also exposed, so as to ensure that the first control valve (14) and the second control valve (17) on the same pipeline are exposed for operation.

5. A visual communication device for displaying landscape design according to claim 1, characterized in that: A light blocking plate (26) is fixedly arranged on the inner side wall of the side guard plate (2), and the light blocking plate (26) is arranged between the supplementary light (7) and the panel frame (4). The light blocking plate (26) blocks the light emitted by the supplementary light (7) and irradiating the transparent plate (5).

6. The working method of a visual communication device for displaying landscape design according to claim 1, characterized in that: Its working principle is as follows: A miniature model for landscape design is created on the base (1). After the miniature modeling is completed, the panel frame (4) is closed. Then, the base (1), the side guard plates (2), and the transparent plates (5) seal and protect the miniature model, and then the model is displayed. During the display process, additional lighting is provided by the supplementary light (7); during the display process, light-transmitting solutions of different colors are injected into the cavity (6) formed by the upper and lower transparent plates (5), thus forming filter effects of different colors; when emptying the solution in the cavity (6), the water pump (8) is turned off, and the second control valve (17) on the corresponding third connecting pipe (16) is opened. Then, the solution in the cavity (6) flows through the through second main water pipe (15) and the third connecting pipe (16) into the second water tank (27). At this time, the excessive solution in the first water tank (10) is supplemented and injected into the cavity (6) through the diversion pipe (11) and finally injected into the second water tank (27). When the solution emptying is completed, the first control valve (14) and the second control valve (17) are closed.

Citation Information

Patent Citations

  • Visual propagation device for displaying landscape design

    CN214207922U