Circulating watering device for plant planting frame

Abstract

The utility model relates to the field of plant planting frames, and discloses a circulating watering device for a plant planting frame, which comprises a frame, a top plate is arranged at the center of the upper end face of the frame, a rainwater collecting box is arranged at the center of the upper end face of the top plate, and a filtering flowing structure is arranged at the upper position of the center in the rainwater collecting box. Two plant planting boxes are vertically arranged at the position, close to the upper portion of the center, in the frame, a plurality of water outlets are formed in the lower inner walls of the two plant planting boxes in a rectangular shape, a water receiving disc is arranged at the position, close to the lower portion, in the frame, of the lower end of the plant planting box, and a filtering circulation structure is arranged at the position, close to the upper portion of the center, in the water receiving disc. According to the utility model, the three second lifting boxes which are arranged up and down are arranged in the water pan, the second filter screens, the sponge filter layers and the plastic filter layers are arranged in the second lifting boxes, and the circulating pump is matched to send filtered water back to the water tank for recycling, so that the utilization rate of water resources is remarkably improved, the water cost is reduced, and the concept of energy conservation and environmental protection is met.

Description

Technical Field

[0001] The utility model relates to the field of plant growing racks, in particular to a circulating watering device for a plant growing rack. Background Technique

[0002] The circulating watering device is an automatic irrigation system, especially suitable for plant growing racks or greenhouses, making the circulating watering device an indispensable part of modern plant growing rack and greenhouse management. It not only improves the planting efficiency but also promotes the development of sustainable agriculture. With the development of technology, the circulating watering device has emerged to solve these problems and improve the watering efficiency and water conservation.

[0003] Since the circulating watering device of the traditional plant growing rack usually has difficulty in controlling the water volume, it is easy to cause over - watering or waste of water resources, and manual watering at regular intervals is required. For large - scale planting areas, the labor intensity is relatively high. Manual watering is difficult to ensure that each plant can obtain uniform moisture, which may lead to water shortage or over - watering of some plants. Therefore, those skilled in the art have provided a circulating watering device for a plant growing rack to solve the problems raised in the above - mentioned background technique. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a circulating watering device for a plant growing rack is proposed. By arranging three second lifting boxes arranged vertically in the water receiving tray, which are provided with a second filter screen, a sponge filter layer and a plastic filter layer inside, and cooperating with a circulating pump to send the filtered water back to the water tank for recycling, the utilization rate of water resources is significantly improved, and the water use cost is reduced, which conforms to the concept of energy conservation and environmental protection. By adopting four first lifting boxes arranged vertically, which are respectively filled with activated carbon, non - woven fabric, sand filter material and ceramic filter element, the collected rainwater is filtered deeply layer by layer, greatly improving the quality of the rainwater, ensuring the water quality for subsequent plant irrigation, and realizing the efficient and sustainable utilization of rainwater. By respectively arranging spraying boxes on the lower end face of the top plate and the lower end face of the upper - located plant growing box, and uniformly watering through a plurality of laterally arranged nozzles, it helps to maintain a good growth environment for plant roots, reduces plant growth problems caused by uneven watering, and improves the health status and stress resistance of plants.

[0005] To achieve the above object, the present utility model provides the following technical solution: A circulating watering device for a plant cultivation rack, comprising a frame, a top plate is provided at the center of the upper end surface of the frame, a rainwater collection box is provided at the center of the upper end surface of the top plate, a filtering and flowing structure is provided at the upper center inside the rainwater collection box, two plant cultivation boxes are arranged vertically at the upper center inside the frame, a plurality of drain holes are arranged in a rectangular array on the lower inner walls of the two plant cultivation boxes, a water receiving tray is arranged inside the frame at the lower end of the lower plant cultivation box, a filtering and circulating structure is provided at the upper center inside the water receiving tray, four support legs are arranged in a rectangular array on the lower end surface of the frame, a water tank is provided at the lower center of the rear end surface of the frame, a spraying structure is provided at the upper center on both sides inside the water tank, and a power supply structure is provided between the upper center of the rear end surface of the rainwater collection box and the lower end surface of the filtering and circulating structure;

[0006] Through the above technical solution, by arranging three second lifting boxes arranged vertically in the water receiving tray, with a second filter screen, a sponge filter layer and a plastic filter layer inside, and cooperating with a circulating pump to send the filtered water back to the water tank for recycling, the utilization rate of water resources is significantly improved, the water use cost is reduced, which conforms to the concept of energy conservation and environmental protection. By adopting four first lifting boxes arranged vertically, which are respectively filled with activated carbon, non-woven fabric, sand filter material and ceramic filter element, the collected rainwater is deeply filtered layer by layer, greatly improving the quality of the rainwater, ensuring the water quality for subsequent plant watering, and realizing the efficient and sustainable utilization of rainwater. By respectively arranging spraying boxes on the lower end surface of the top plate and the lower end surface of the upper plant cultivation box, and evenly watering through a plurality of laterally arranged nozzles, it helps to maintain a good growth environment for plant roots, reduces plant growth problems caused by uneven watering, and improves the health status and stress resistance of plants.

[0007] Further, the filtering and flowing structure includes four first lifting boxes, a first filter screen, four bolts, activated carbon, non-woven fabric, sand filter material, ceramic filter element and a water delivery pipe. The four first lifting boxes are arranged vertically at the upper center inside the rainwater collection box. The first filter screen is arranged at the center of the upper end surface of the rainwater collection box. The four bolts are arranged in a rectangular array at the center of the upper end surface of the first filter screen. The activated carbon, non-woven fabric, sand filter material and ceramic filter element are respectively arranged inside the four first lifting boxes. The water delivery pipe is arranged at the lower center of the rear end surface of the rainwater collection box. The output end of the water delivery pipe penetrates through the upper end surface of the water tank and leads to the inside of the water tank;

[0008] Through the above technical solution, rainwater first passes through the first filter screen on the upper end face of the rainwater collection box to initially filter out larger impurities and foreign objects. After entering the interior of the rainwater collection box, the rainwater successively flows through four first lifting boxes arranged vertically. The activated carbon adsorbs the peculiar smell and some harmful substances in the rainwater. Then, the non-woven fabric further filters out fine impurities. Next, the sand filter material deeply filters the rainwater. Finally, the ceramic filter element further strengthens the filtering effect to remove smaller particles and pollutants. The rainwater purified through layers of filtration is transported to the water tank through the water delivery pipe for storage and standby, improving the quality of the rainwater and ensuring the water quality for subsequent plant irrigation. Through the effective filtration and collection of rainwater, the utilization rate of rainwater is increased, the dependence on other clean water sources is reduced, and the sustainable utilization of water resources is realized. The filtered rainwater is cleaner, reducing the potential harm to plants, contributing to the normal growth and development of plants, and improving the survival rate and quality of plants.

[0009] Further, the spraying structure includes two self-priming pumps, two spraying boxes, and multiple nozzles. The two self-priming pumps are respectively arranged on both sides near the center of the lower inner wall of the water tank. The two spraying boxes are respectively arranged at the center of the lower end face of the top plate and at the center of the lower end face of the upper plant planting box. The multiple nozzles are respectively arranged horizontally at the center of the lower end faces of the two spraying boxes. The output ends of the two self-priming pumps respectively pass through the upper inner wall of the water tank and the rear end faces of the two spraying boxes near one side and are respectively led into the interiors of the two spraying boxes;

[0010] Through the above technical solution, when watering the plants is required, the two self-priming pumps are started. The self-priming pumps draw water from the water tank and then transport the water to the corresponding spraying boxes. The water entering the spraying boxes is evenly sprayed out through the multiple horizontally arranged nozzles under the action of pressure to irrigate the plants below. The uniform and appropriate watering method helps to maintain a good growth environment for the plant roots, reduces plant growth problems caused by uneven watering, and improves the health status and stress resistance of the plants.

[0011] Further, the filtering and circulating structure includes three second lifting boxes, a second filter screen, a sponge filtering layer, a plastic filtering layer, and a circulating pump. The three second lifting boxes are respectively arranged vertically at the upper center of the interior of the water receiving tray. The second filter screen, the sponge filtering layer, and the plastic filtering layer are respectively arranged at the centers of the interiors of the three second lifting boxes. The circulating pump is arranged at the upper center of one side wall of the water tank. The output end of the circulating pump passes through one side wall of the water tank and leads into the interior of the water tank. The input end of the circulating pump passes through one side wall of the water receiving tray and leads into the interior of the water receiving tray;

[0012] Through the above technical solution, the excess water after watering flows out from the drain outlet of the plant planting box and falls into the water receiving tray. The water first passes through the second filter screen in the second lifting box on the top layer, initially filtering out larger impurities, and then passes through the sponge filter layer to further adsorb and filter fine particles and some pollutants. Then it passes through the plastic filter layer to further strengthen the filtering effect. The water after three-layer filtration is pumped under the action of the circulation pump and conveyed back to the water tank through the output end of the circulation pump, realizing the recycling of water. The used water can be effectively filtered and recycled and used for plant watering again, significantly improving the utilization rate of water resources, reducing the water use cost, reducing the demand for fresh water, reducing the consumption of water resources, conforming to the concept of energy conservation and environmental protection, reducing the water use expenditure in the planting process, and at the same time reducing the impact of wastewater discharge on the environment, having good economic and environmental benefits.

[0013] Further, the power supply structure includes a solar panel, a power supply box, an inverter and a storage battery. The solar panel is arranged at the upper center of the rear end face of the rainwater collection tank. The power supply box is arranged at the center of the lower end face of the water receiving tray and close to one side. The inverter is arranged at the center of the lower end face of the water receiving tray and close to the other side. The storage battery is arranged at the center inside the power supply box.

[0014] Through the above technical solution, the solar panel receives sunlight and converts light energy into electrical energy. The generated electrical energy is transmitted to the storage battery in the power supply box for storage. The inverter converts the direct current output by the storage battery into alternating current to meet the power supply type required by the equipment. When the whole system operates, the electrical energy in the storage battery is converted by the inverter to provide power support for each electrical component such as the self-priming pump and the circulation pump.

[0015] Further, a water inlet is arranged at the rear side of one side of the upper end face of the water tank.

[0016] Through the above technical solution, it is ensured that the water tank can maintain sufficient water volume under various circumstances to meet the irrigation needs of plants.

[0017] Further, one end of each of the four bolts sequentially penetrates through the upper end face of the first filter screen and the upper end face of the rainwater collection tank and reaches the inside of the rainwater collection tank, and the ends are all threadedly connected inside the rainwater collection tank.

[0018] Through the above technical solution, it is ensured that the first filter screen will not loosen or shift during the rainwater collection process, and the stability of the filtering effect is guaranteed.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the present utility model, in the circulating watering device for a plant cultivation rack, by arranging three second lifting boxes arranged vertically in the water receiving tray, which are internally provided with a second filter screen, a sponge filter layer and a plastic filter layer, and cooperating with a circulating pump to send the filtered water back to the water tank for recycling, the utilization rate of water resources is significantly improved, the water use cost is reduced, and it conforms to the concept of energy conservation and environmental protection.

[0021] 2. In the present utility model, by adopting four first lifting boxes arranged vertically, which are respectively filled with activated carbon, non-woven fabric, sand filter material and ceramic filter element, the collected rainwater is deeply filtered layer by layer, greatly improving the quality of the rainwater, ensuring the water quality for subsequent plant watering, and realizing the efficient and sustainable utilization of rainwater.

[0022] 3. In the present utility model, by respectively arranging spraying boxes on the lower end surface of the top plate and the lower end surface of the upper plant cultivation box, and uniformly watering through a plurality of laterally arranged spray heads, it helps to maintain a good growth environment for plant roots, reduces plant growth problems caused by uneven watering, and improves the plant health and stress resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of a circulating watering device for a plant cultivation rack proposed by the present utility model;

[0024] Figure 2 is a side sectional view of a circulating watering device for a plant cultivation rack proposed by the present utility model;

[0025] Figure 3 is a front sectional view of a circulating watering device for a plant cultivation rack proposed by the present utility model;

[0026] Figure 4 is a rear sectional view of a circulating watering device for a plant cultivation rack proposed by the present utility model.

[0027] LEGEND DESCRIPTION:

[0028] 1. Frame; 2. Rainwater collection tank; 3. Filtering and flowing structure; 301. First lifting box; 302. First filter screen; 303. Bolt; 304. Activated carbon; 305. Non-woven fabric; 306. Sand filter material; 307. Ceramic filter element; 308. Water delivery pipe; 4. Top plate; 5. Plant cultivation box; 6. Spraying structure; 601. Self-priming pump; 602. Spraying box; 603. Spray head; 7. Water receiving tray; 8. Filtering and circulating structure; 801. Second lifting box; 802. Second filter screen; 803. Sponge filter layer; 804. Plastic filter layer; 805. Circulating pump; 9. Power supply structure; 901. Solar panel; 902. Power supply box; 903. Inverter; 904. Storage battery; 10. Drainage port; 11. Water tank; 12. Support leg. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Referring to Figures 1-4 , an embodiment provided by the present invention: a circulating watering device for a plant planting rack, including a frame 1. At the center of the upper end face of the frame 1, there is a top plate 4. At the center of the upper end face of the top plate 4, there is a rainwater collection tank 2. At the upper center inside the rainwater collection tank 2, there is a filtering and flowing structure 3. Inside the frame 1, two plant planting boxes 5 are arranged vertically at the upper center. On the lower inner walls of the two plant planting boxes 5, a plurality of drain ports 10 are arranged in a rectangular pattern. Inside the frame 1 below the lower plant planting box 5, there is a water receiving tray 7. At the upper center inside the water receiving tray 7, there is a filtering and circulating structure 8. At the lower end face of the frame 1, four support legs 12 are arranged in a rectangular pattern. At the lower center of the rear end face of the frame 1, there is a water tank 11. On both sides of the center inside the water tank 11, there is a spraying structure 6. At the upper center of the rear end face of the rainwater collection tank 2 and the lower end face of the filtering and circulating structure 8, there is a power supply structure 9. In this circulating watering device for a plant planting rack, the rainwater collection tank 2 collects rainwater through the top opening, and the internal filtering and flowing structure 3 preliminarily filters the rainwater to make it relatively clean. The water tank 11 is used to store water.

[0031] When watering is required, the spraying structure 6 inside the water tank 11 sprays water to irrigate the plants in the plant planting boxes 5. After irrigation, the excess water drains out through the drain ports 10 at the bottom of the plant planting boxes 5 and falls into the water receiving tray 7. The filtering and circulating structure 8 in the water receiving tray 7 filters and purifies this water, and then the treated water is sent back to the water tank 11 through relevant equipment to achieve the recycling of water. The power supply structure 9 at the rear end face of the rainwater collection tank 2 and the lower end face of the filtering and circulating structure 8 provides power support for the operation of the entire device. At the rear side of one side of the upper end face of the water tank 11, there is a water inlet to ensure that the water tank 11 can maintain sufficient water volume under various circumstances to meet the irrigation needs of plants.

[0032] The filtration flow structure 3 includes four first lifting boxes 301, a first filter screen 302, four bolts 303, activated carbon 304, non-woven fabric 305, sand filter media 306, a ceramic filter element 307, and a water delivery pipe 308. The four first lifting boxes 301 are arranged vertically at the upper center inside the rainwater collection tank 2. The first filter screen 302 is arranged at the center of the upper end face of the rainwater collection tank 2. The four bolts 303 are arranged in a rectangle at the center of the upper end face of the first filter screen 302. The activated carbon 304, non-woven fabric 305, sand filter media 306, and ceramic filter element 307 are respectively arranged inside the four first lifting boxes 301. The water delivery pipe 308 is arranged at the lower center of the rear end face of the rainwater collection tank 2. The output end of the water delivery pipe 308 penetrates through the upper end face of the water tank 11 and leads to the inside of the water tank 11.

[0033] First, rainwater passes through the first filter screen 302 on the upper end face of the rainwater collection tank 2 to preliminarily filter out larger impurities and foreign objects. After entering the inside of the rainwater collection tank 2, the rainwater flows through the four first lifting boxes 301 arranged vertically in sequence. The activated carbon 304 adsorbs the peculiar smell and some harmful substances in the rainwater. Then, the non-woven fabric 305 further filters out fine impurities. Next, the sand filter media 306 deeply filters the rainwater. Finally, the ceramic filter element 307 further strengthens the filtering effect to remove smaller particles and pollutants. The rainwater purified through layers of filtration is conveyed to the water tank 11 for storage and standby through the water delivery pipe 308, improving the water quality of the rainwater, ensuring the water quality for subsequent plant irrigation. Through the effective filtration and collection of rainwater, the utilization rate of rainwater is increased, the dependence on other clean water sources is reduced, and the sustainable utilization of water resources is realized. The filtered rainwater is cleaner, reducing the potential harm to plants, contributing to the normal growth and development of plants, improving the survival rate and quality of plants. One end of each of the four bolts 303 penetrates through the upper end face of the first filter screen 302 and the upper end face of the rainwater collection tank 2 and leads to the inside of the rainwater collection tank 2, and the ends are all threadedly connected inside the rainwater collection tank 2 to ensure that the first filter screen 302 will not loosen or shift during the rainwater collection process, guaranteeing the stability of the filtering effect.

[0034] The spraying structure 6 includes two self-priming pumps 601, two spraying boxes 602 and multiple nozzles 603. The two self-priming pumps 601 are respectively arranged on both sides near the center of the lower inner wall of the water tank 11. The two spraying boxes 602 are respectively arranged at the center of the lower end face of the top plate 4 and at the center of the lower end face of the plant planting box 5 near the upper part. The multiple nozzles 603 are respectively arranged horizontally at the center of the lower end faces of the two spraying boxes 602. The output ends of the two self-priming pumps 601 respectively pass through the upper inner wall of the water tank 11 and the rear end faces of the two spraying boxes 602 near one side and then lead to the interiors of the two spraying boxes 602 respectively. When watering the plants is needed, the two self-priming pumps 601 are started. The self-priming pumps 601 draw water from the water tank 11 and then transport the water to the corresponding spraying boxes 602. The water entering the spraying boxes 602 is evenly sprayed out through the multiple horizontally arranged nozzles 603 under the action of pressure to irrigate the plants below. The uniform and appropriate watering method helps to maintain a good growth environment for the plant roots, reduces plant growth problems caused by uneven watering, and improves the health status and stress resistance of the plants.

[0035] The filtering and circulating structure 8 includes three second lifting boxes 801, a second filter screen 802, a sponge filter layer 803, a plastic filter layer 804 and a circulating pump 805. The three second lifting boxes 801 are respectively arranged vertically at the upper part near the center inside the water receiving tray 7. The second filter screen 802, the sponge filter layer 803 and the plastic filter layer 804 are respectively arranged at the centers inside the three second lifting boxes 801. The circulating pump 805 is arranged at the upper part near the center of one side wall of the water tank 11. The output end of the circulating pump 805 passes through one side wall of the water tank 11 and leads to the inside of the water tank 11. The input end of the circulating pump 805 passes through one side wall of the water receiving tray 7 and leads to the inside of the water receiving tray 7.

[0036] The excess water after watering flows out from the drain opening 10 of the plant planting box 5 and falls into the water receiving tray 7. The water first passes through the second filter screen 802 in the uppermost second lifting box 801 to initially filter out larger impurities, then passes through the sponge filter layer 803 to further adsorb and filter fine particles and some pollutants, and then passes through the plastic filter layer 804 to further enhance the filtering effect. The water after three-layer filtering is pumped under the action of the circulating pump 805 and is transported back to the water tank 11 through the output end of the circulating pump 805, realizing the recycling of water. The used water can be effectively filtered and recycled and reused for plant irrigation again, significantly improving the utilization rate of water resources, reducing the water use cost, reducing the demand for new water, reducing the consumption of water resources, conforming to the concept of energy conservation and environmental protection, reducing the water use expenditure in the planting process, and at the same time reducing the impact of wastewater discharge on the environment, having good economic and environmental benefits.

[0037] The power supply structure 9 includes a solar panel 901, a power supply box 902, an inverter 903, and a storage battery 904. The solar panel 901 is arranged at the upper center of the rear end face of the rainwater collection box 2. The power supply box 902 is arranged at the center of the lower end face of the water receiving tray 7 and close to one side. The inverter 903 is arranged at the center of the lower end face of the water receiving tray 7 and close to the other side. The storage battery 904 is arranged at the center inside the power supply box 902. The solar panel 901 receives sunlight and converts light energy into electrical energy. The generated electrical energy is transmitted to the storage battery 904 in the power supply box 902 for storage. The inverter 903 converts the direct current output by the storage battery 904 into alternating current to meet the power supply type required by the equipment. When the entire system operates, the electrical energy in the storage battery 904 is converted by the inverter 903 to provide power support for each electrical component such as the self-priming pump 601 and the circulation pump 805.

[0038] Working principle: In this circulating watering device for a plant growing rack, the rainwater collection box 2 collects rainwater through the top opening. The rainwater first passes through the first filter screen 302 on the upper end face of the rainwater collection box 2 to preliminarily filter out larger impurities and foreign objects. After entering the interior of the rainwater collection box 2, the rainwater successively flows through four first lifting boxes 301 arranged vertically. The activated carbon 304 adsorbs the peculiar smell and some harmful substances in the rainwater. Then, the non-woven fabric 305 further filters out fine impurities. Then, the sand filter material 306 deeply filters the rainwater. Finally, the ceramic filter element 307 strengthens the filtering effect again to remove smaller particles and pollutants. The rainwater purified through layers of filtration is transported to the water tank 11 through the water delivery pipe 308 for storage and standby. The water tank 11 is used to store water.

[0039] When watering the plants is required, two self-priming pumps 601 are started. The self-priming pumps 601 suck water from the water tank 11 and then transport the water to the corresponding spraying boxes 602. The water entering the spraying boxes 602 is evenly sprayed out through a plurality of laterally arranged nozzles 603 under the action of pressure to irrigate the plants below. The uniform and appropriate watering method helps to maintain a good growth environment for the plant roots, reduces plant growth problems caused by uneven watering, improves the health condition and stress resistance of the plants, and irrigates the plants in the plant cultivation box 5. After irrigation, the excess water is discharged through the drain hole 10 at the bottom of the plant cultivation box 5 and falls into the water receiving tray 7. The water first passes through the second filter screen 802 in the uppermost second lifting box 801 to preliminarily filter out larger impurities, then passes through the sponge filter layer 803 to further adsorb and filter fine particles and some pollutants, and then passes through the plastic filter layer 804 to further enhance the filtering effect. The water after three-layer filtration is pumped under the action of the circulation pump 805 and transported back to the water tank 11 through the output end of the circulation pump 805, realizing the recycling of water. The used water can be effectively filtered and recycled and used for plant irrigation again, significantly improving the utilization rate of water resources. The solar panel 901 receives sunlight and converts the light energy into electrical energy. The generated electrical energy is transmitted to the storage battery 904 in the power supply box 902 for storage. The inverter 903 converts the direct current output by the storage battery 904 into alternating current to meet the power supply type required by the equipment. When the whole system operates, the electrical energy in the storage battery 904 is converted by the inverter 903 to provide power support for each electrical component such as the self-priming pump 601 and the circulation pump 805.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A circulating watering device for a plant growing rack, comprising a frame (1), characterized in that: A top plate (4) is provided at the center of the upper end surface of the frame (1), a rainwater collection box (2) is provided at the center of the upper end surface of the top plate (4), a filtering flow structure (3) is provided at the upper center of the rainwater collection box (2), two plant planting boxes (5) are arranged in an upper and lower manner at the upper center of the frame (1), the lower inner walls of the two plant planting boxes (5) are both arranged in a rectangular manner and are provided with a plurality of drainage openings (10), a water receiving tray (7) is provided inside the lower end frame (1) of the plant planting box (5), a filtering circulation structure (8) is provided at the upper center of the water receiving tray (7), four supporting legs (12) are arranged in a rectangular manner on the lower end surface of the frame (1), a water tank (11) is provided at the lower center of the rear end surface of the frame (1), a spraying structure (6) is provided at both sides of the center of the water tank (11), and a power supply structure (9) is provided at the upper center of the rear end surface of the rainwater collection box (2) and at the lower end surface of the filtering circulation structure (8).

2. A circulating watering device for a plant planting rack according to claim 1, characterized in that: The filtering flow structure (3) comprises four first lifting boxes (301), a first filter screen (302), four bolts (303), activated carbon (304), a non-woven fabric (305), a sand filter material (306), a ceramic filter element (307) and a water pipe (308), wherein the four first lifting boxes (301) are arranged vertically at the upper center of the rainwater collection box (2), and the first filter screen (302) is arranged at the center of the upper end surface of the rainwater collection box (2). The four bolts (303) are arranged in a rectangular shape at the center of the upper end surface of the first filter screen (302); the activated carbon (304), non-woven fabric (305), sand filter material (306) and ceramic filter element (307) are respectively arranged inside the four first boxes (301); the water pipe (308) is arranged at the lower center of the rear end surface of the rainwater collection box (2); and the output end of the water pipe (308) passes through the upper end surface of the water tank (11) and reaches the inside of the water tank (11).

3. A circulating watering device for a plant planting rack according to claim 1, characterized in that: The spraying structure (6) comprises two self-priming pumps (601), two spray boxes (602) and a plurality of spray heads (603). The two self-priming pumps (601) are respectively arranged at the center of the lower inner wall of the water tank (11) on both sides. The two spray boxes (602) are respectively arranged at the center of the lower end surface of the top plate (4) and at the center of the lower end surface of the upper plant planting box (5). The plurality of spray heads (603) are respectively arranged in a transverse arrangement at the center of the lower end surfaces of the two spray boxes (602). The output ends of the two self-priming pumps (601) respectively penetrate the upper inner wall of the water tank (11) and the center of the rear end surfaces of the two spray boxes (602) on one side and are respectively connected to the interior of the two spray boxes (602).

4. A circulating watering device for a plant planting rack according to claim 1, characterized in that: The filtering circulation structure (8) comprises three second lifting boxes (801), a second filter screen (802), a sponge filter layer (803), a plastic filter layer (804) and a circulation pump (805); the three second lifting boxes (801) are arranged in an upper and lower arrangement at the center of the water receiving tray (7); the second filter screen (802), the sponge filter layer (803) and the plastic filter layer (804) are arranged at the center of the three second lifting boxes (801); the circulation pump (805) is arranged at the center of the side wall of the water tank (11); the output end of the circulation pump (805) passes through the side wall of the water tank (11) and is connected to the inside of the water tank (11); the input end of the circulation pump (805) passes through the side wall of the water receiving tray (7) and is connected to the inside of the water receiving tray (7).

5. A circulating watering device for a plant planting rack according to claim 1, characterized in that: The power supply structure (9) comprises a solar panel (901), a power supply box (902), an inverter (903) and a storage battery (904); the solar panel (901) is arranged at the upper center of the rear end surface of the rainwater collection box (2); the power supply box (902) is arranged at one side of the center of the lower end surface of the water receiving tray (7); the inverter (903) is arranged at the other side of the center of the lower end surface of the water receiving tray (7); and the storage battery (904) is arranged at the center inside the power supply box (902).

6. A circulating watering device for a plant planting rack according to claim 1, characterized in that: A water inlet is provided at the rear of one side of the upper end surface of the water tank (11).

7. A circulating watering device for a plant planting rack according to claim 2, characterized in that: One end of the four bolts (303) passes through the upper end surface of the first filter screen (302) and the upper end surface of the rainwater collection box (2) in sequence to the inside of the rainwater collection box (2), and the ends are all threadedly connected to the inside of the rainwater collection box (2).

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