A box for screening and cultivating low-accumulation vegetables in contaminated farmland

Abstract

This utility model relates to the technical field of low-accumulation vegetable cultivation equipment, specifically to a screening and cultivation box for low-accumulation vegetables in polluted farmland. It solves the problems of water spray heads obstructing the growth of low-accumulation vegetables and uneven concentration of heavy metal experimental solutions. The box includes a housing and sliding seats. An inner support frame is fixedly connected in a rectangular array inside the housing. Limiting rods are fixedly connected between a row of inner support frames. Sliding seats are slidable outside the limiting rods. Vertical connecting rods are fixedly connected between a vertical row of sliding seats. A turntable rotates inside the upper end of each sliding seat. A power component is installed outside the turntable, driving the turntable to rotate. This utility model can achieve conventional cultivation functions, improve the uniformity of heavy metal content in the soil covering the cultivation chamber, and avoid obstructing the growth of low-accumulation vegetables. Multiple sets of heavy metal experimental solution spraying components can spray multiple types of heavy metal experimental solutions, thereby testing the resistance of low-accumulation vegetables to different types of heavy metals.

Description

Technical Field

[0001] This utility model relates to the technical field of low-accumulation vegetable cultivation equipment, specifically to a screening and cultivation box for low-accumulation vegetables in polluted farmland. Background Technology

[0002] With the rapid development of industrialization and urbanization, farmland in some areas has been contaminated with heavy metals to varying degrees, such as cadmium, lead, arsenic and mercury. These heavy metals enter the human body through the food chain and can seriously endanger health. However, comprehensive and thorough soil remediation is costly and time-consuming, making it difficult to promote on a large scale in the short term. Therefore, how to safely produce agricultural products that meet standards on farmland with mild to moderate pollution has become an urgent problem to be solved. Against this background, the screening and utilization technology of low-accumulation vegetables has emerged.

[0003] Low-accumulation vegetables refer to those vegetables that, when grown in soil contaminated with heavy metals, have a significantly lower capacity for absorbing and accumulating specific heavy metals in their edible parts than ordinary varieties. They can block most heavy metals in the roots or transport them to the above-ground parts in a very low proportion, thus ensuring that the heavy metal content in the edible parts is lower than the national food safety limit standards.

[0004] The following steps are required for initial laboratory screening of vegetables with low accumulation:

[0005] Through hydroponic or potted experiments, under controlled conditions, a specific concentration of heavy metals was added to the culture medium, and the growth response and heavy metal accumulation of different vegetable varieties were observed to preliminarily screen out potential varieties.

[0006] However, existing low-accumulation vegetable screening and cultivation boxes have some drawbacks, such as:

[0007] When spraying heavy metal test solution into the casing culture medium using a spray nozzle, the spray nozzle needs to be close to the casing culture medium. This will cause the spray nozzle to block the growth of low-accumulation vegetables, hindering their growth. In addition, the spray nozzle only sprays one area of ​​the casing culture medium, resulting in uneven concentration of heavy metal test solution in different parts of the casing culture medium. These two defects will affect the accuracy of the screening test data.

[0008] Therefore, this utility model provides a screening and cultivation box for low-accumulation vegetables in polluted farmland to solve the above problems. Utility Model Content

[0009] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a screening and cultivation box for low-accumulation vegetables in polluted farmland, so as to solve the problems that the spray nozzles will block the growth of low-accumulation vegetables and the uneven concentration of heavy metal experimental solution.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0011] A screening and cultivation box for low-accumulation vegetables in polluted farmland includes a box body and a sliding base;

[0012] Box body: The box body has a rectangular array of fixed internal support frames, and limit rods are fixedly connected between a row of internal support frames;

[0013] Slide: The slide sleeve is outside the limiting rod. A vertical row of connecting rods is fixedly connected between the slides in a vertical row. Each slide has a turntable rotating inside its upper end. A power component is installed outside the turntable. The power component drives the turntable to rotate. A culture chamber is placed inside each turntable.

[0014] A heavy metal test solution spraying assembly is installed on the chamber, with the outlet end of the heavy metal test solution spraying assembly facing the culture chamber.

[0015] Through the above technical solution, the outlet end of the heavy metal test solution spraying component sprays the heavy metal test solution towards the cultivation chamber, realizing the conventional cultivation function. The rotating turntable ensures that the heavy metal test solution can be sprayed on all parts of the cultivation chamber, improving the uniformity of heavy metal content in the soil covering the cultivation chamber. After spraying, the sliding seat can be moved laterally, so that the cultivation chamber is away from the outlet end of the heavy metal test solution spraying component, avoiding obstructing the growth of low-accumulation vegetables in the cultivation chamber.

[0016] Preferably, the power assembly includes an active rack and a passive gear ring. Each turntable is fixedly fitted with a passive gear ring. A row of passive gear rings meshes with the teeth of the active rack. The active rack and the limiting rod are arranged parallel to each other. The active rack moves laterally through the inner support frame. One end of the active rack moves out of the housing. A row of active racks are fixedly connected to each other.

[0017] With the above technical solution, pulling the active gear rod can cause multiple rows of passive gear rings to rotate simultaneously. The passive gear rings drive the turntable to rotate, and the turntable drives the culture chamber to rotate, thereby controlling the rotation of multiple rows of culture chambers, making operation more convenient.

[0018] Preferably, the heavy metal test solution spraying assembly includes a heavy metal test solution loading tank, a water pump, horizontal water pipes, vertical water pipes, spray heads, and pipe supports. The number of heavy metal test solution loading tanks and water pumps is equal and equal to the number of rows in the culture chamber. The heavy metal test solution loading tanks and water pumps are fixedly installed on the side of the box. The water inlet of the water pump is connected to the heavy metal test solution loading tank. The water outlet of each water pump is fixedly connected to a vertical water pipe through a water pipe. The vertical water pipes are vertically inserted into the box. The side of each vertical water pipe is linearly arranged with horizontal water pipes passing through it. Each horizontal water pipe is placed horizontally. The lower half of the side of the horizontal water pipes is linearly arranged with spray heads passing through it. The spray heads are located above the culture chamber. The horizontal water pipes are linearly arranged and fixedly fitted with pipe supports, which are fixed on the inner support frame.

[0019] A controller is fixedly connected to the side of the housing. The input terminal of the controller is electrically connected to the output terminal of an external power supply, and the output terminal of the controller is electrically connected to the input terminal of the water pump.

[0020] Through the above technical solution, the controller controls the water pump to work, so that the heavy metal test solution in the heavy metal test solution loading tank passes through the water pump, vertical water pipe, horizontal water pipe and spray head in sequence and is sprayed into the culture chamber. Multiple heavy metal test solution loading tanks can be loaded with multiple types of heavy metal test solutions, so as to test the resistance of low accumulation vegetables to different types of heavy metals.

[0021] Preferably, a temporary locking assembly is installed between the inner support frame and the slide block;

[0022] The above technical solution allows the slide to be detachably fixed on the inner support frame, ensuring that the slide does not move when the active gear drives the passive gear ring to rotate.

[0023] Preferably, the temporary locking assembly includes a retaining ring, a buckle, and a push-pull rod. A retaining ring is fixedly connected to the lower side of a slide on a horizontal plane. A push-pull rod moves between the front and rear inner support frames. The side of the push-pull rod has a linear array of buckles formed integrally. When the slide approaches the inner support frame, the buckles move backward into the retaining ring.

[0024] With the above technical solution, the slide can be fixed when the buckle is inserted into the retaining ring backward, and the slide can be moved freely when the buckle is pulled out from the retaining ring forward. Furthermore, multiple buckles are integrally formed on a single push-pull rod, which can simultaneously control the fixing and movement of an entire row of slides.

[0025] Preferably, the height of the four upper corners of the slide is higher than the height of the upper side of the turntable, so that the culture chamber is located between the four upper corners of the slide;

[0026] The above technical solution prevents the culture chamber from moving back and forth, that is, prevents the culture chamber from sliding off the slide.

[0027] The beneficial effects of this utility model are as follows:

[0028] In summary, this device can spray heavy metal test solutions by directing the outlet of the heavy metal test solution spraying assembly toward the culture chamber, thus achieving conventional cultivation functions. Rotating the turntable ensures that the heavy metal test solution is sprayed evenly throughout the culture chamber, improving the uniformity of heavy metal content in the soil covering the chamber. After spraying, the sliding blocks can be moved laterally, moving the culture chamber away from the outlet of the heavy metal test solution spraying assembly, preventing obstruction of the growth of low-accumulation vegetables within the chamber. Multiple sets of heavy metal test solution spraying assemblies can spray multiple types of heavy metal test solutions, thereby testing the resistance of low-accumulation vegetables to different types of heavy metals. Furthermore, after one or more rows of sliding blocks slide laterally, the sliding blocks and culture chambers of the next row are exposed, facilitating observation and operation of the low-accumulation vegetables in the rear culture chambers by the cultivators. Attached Figure Description

[0029] Figure 1 This is a perspective view of the present invention.

[0030] Figure 2 for Figure 1 A magnified view of part A.

[0031] Figure 3 This is the front view of the present invention.

[0032] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point BB.

[0033] Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure at point CC.

[0034] Figure 6 for Figure 5 A magnified schematic diagram of part D.

[0035] In the diagram: 1. Controller; 2. Active gear; 3. Slide; 4. Culture chamber; 5. Vertical connecting rod; 6. Limiting rod; 7. Internal support frame; 8. Pipe support component; 9. Heavy metal experimental solution loading tank; 10. Water pump; 11. Horizontal water pipe; 12. Vertical water pipe; 13. Box body; 14. Spray head; 15. Snap ring; 16. Passive gear ring; 17. Turntable; 18. Buckle; 19. Push-pull rod. Detailed Implementation

[0036] The following will refer to the attached reference. Figures 1 to 6 The various embodiments of this utility model will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0037] As attached Figure 1 -Appendix Figure 6 As shown, a screening and cultivation box for low-accumulation vegetables in polluted farmland includes a box body 13 and a slide 3. The length direction of the box body 13 is set as the first direction x, the width direction of the box body 13 is set as the second direction y, and the height direction of the box body 13 is set as the third direction z.

[0038] Box 13: See Appendix Figure 1 and attached Figure 4 An inner support frame 7 is fixedly connected in a rectangular array between the upper and lower sides of the box 13. Two rows of parallel limiting rods 6 are fixedly connected between a row of inner support frames 7 along the first direction x and along the third direction y. The inner support frame 7 divides the limiting rods 6 into segments, with no less than two segments. In this embodiment, the limiting rods 6 have four segments.

[0039] Slide 3: See Appendix Figure 1 and attached Figure 4 The slide block 3 is slidably mounted between two parallel limiting rods 6 along the first direction x. Each segment of the limiting rod 6 is slidably mounted with a slide block 3. A vertical row of connecting rods 5 is fixedly connected between a vertical column of slide blocks 3 along the third direction z. A turntable 17 is rotatably mounted inside the upper end of each slide block 3. A power component is installed outside the turntable 17. The power component drives the turntable 17 to rotate. A culture chamber 4 is placed inside each turntable 17. The height of the four corners of the upper end of the slide block 3 is higher than the height of the upper side of the turntable 17, so that the culture chamber 4 is located between the four corners of the upper end of the slide block 3 to prevent it from falling back and forth randomly.

[0040] A temporary locking assembly is installed between the inner support frame 7 and the slide 3, so that the slide 3 can be detachably fixed on the inner support frame 7;

[0041] A heavy metal experimental solution spraying assembly is installed on the chamber 13, with the outlet end of the heavy metal experimental solution spraying assembly facing the culture chamber.

[0042] As attached Figure 1 Appendix Figure 2 Appendix Figure 5 and attached Figure 6 As shown, the power assembly includes an active rack 2 and a passive gear ring 16. Each turntable 17 is fixedly fitted with a passive gear ring 16. A row of passive gear rings 16 along the first direction x meshes with the teeth of the active rack 2. The active rack 2 is arranged parallel to the limiting rod 6. The active rack 2 moves laterally through the inner support frame 7. One end of the active rack 2 moves out of the housing 13. A row of active racks 2 along the second direction y are fixedly connected to each other.

[0043] The power unit works as follows: pulling the active gear 2 causes the active gear 2 at the same height to move left and right simultaneously. The active gear 2 drives the passive gear ring 16 to rotate, the passive gear ring 16 drives the turntable 17 to rotate, and the turntable 17 drives the culture chamber 4 to rotate.

[0044] As attached Figure 1 and attached Figure 2 As shown, the heavy metal test solution spraying assembly includes a heavy metal test solution loading tank 9, a water pump 10, horizontal water pipes 11, vertical water pipes 12, a spray head 14, and a pipe support 8. The number of heavy metal test solution loading tanks 9 and water pumps 10 is equal and equal to the number of rows of culture chambers 4 along the first direction x. The heavy metal test solution loading tanks 9 and water pumps 10 are both fixedly installed on the side of the housing 13. The water inlet of the water pump 10 is connected to the heavy metal test solution loading tank 9, and the water outlet of each water pump 10 is fixedly connected to a vertical water pipe. Vertical water pipes 12 are placed vertically and pass downward along the third direction z into the box 13. Each vertical water pipe 12 has a horizontal water pipe 11 passing through its side along the third direction z in a straight line array. Each horizontal water pipe 11 is placed horizontally. The lower half of the side of the horizontal water pipe 1 passes through a spray head 14 along the second direction y in a straight line array. The spray head 14 is located above the culture chamber 4. The horizontal water pipe 1 is fixedly fitted with a pipe support 8 along the second direction y in a straight line array. The pipe support 8 is fixed on the inner support frame 7.

[0045] A controller 1 is fixedly connected to the side of the housing 13. The input terminal of the controller 1 is electrically connected to the output terminal of an external power supply, and the output terminal of the controller 1 is electrically connected to the input terminal of the water pump 10.

[0046] The heavy metal test solution spraying assembly works as follows: the controller 1 controls the water pump 10 to work, so that the heavy metal test solution in the heavy metal test solution loading tank 9 passes through the water pump 10, the vertical water pipe 12, the horizontal water pipe 11 and the spray head 14 in sequence and is sprayed onto the culture chamber 4. Multiple heavy metal test solution loading tanks 9 can be loaded with multiple types of heavy metal test solutions, so as to test the resistance of low-accumulation vegetables to different types of heavy metals.

[0047] The experimental results on the resistance of romaine lettuce to one of the heavy metals are shown in Table 1 below:

[0048]

[0049] Table 1

[0050] As attached Figure 4As shown, the temporary locking assembly includes a retaining ring 15, a buckle 18, and a push-pull rod 19. The retaining ring 15 is fixedly connected to the lower side of the slide 3 on the horizontal plane along the first direction x and the second direction y. The push-pull rod 19 moves through the inner support frame 7 along the second direction y. The side of the push-pull rod 19 has a linear array of buckles 18 integrally formed. When the slide 3 is close to the inner support frame 7, the buckles 18 are inserted into the retaining ring 15.

[0051] The temporary locking component works as follows: when the push-pull rod 19 is pushed back and forth, the buckle 18 can be inserted into the retaining ring 15 to fix the slide 3. When the buckle 18 is pulled out from the retaining ring 15, the slide 3 can be moved freely. Moreover, multiple buckles 18 are integrally formed on one push-pull rod 19, so the fixing and movement of an entire row of slides 3 can be controlled at the same time.

[0052] The working principle of this device is as follows:

[0053] When it is necessary to spray the heavy metal experimental solution into the culture chamber 4, move the slide block 3 to the right. The vertical connecting rod 5 will drive a vertical row of slide blocks 3 to move to the right, thereby bringing all the slide blocks 3 closer to the inner support frame 7. Then push the pull rod 19 backward to insert the buckle 18 into the retaining ring 15 to fix the slide block 3. At this time, the slide block 3 will remain stationary when the active gear 2 is pulled left and right. Turn on the controller 1, and the water pump 10 will start working. The heavy metal experimental solution in the heavy metal experimental solution loading tank 9 will pass through the water pump 10 and the vertical connecting rod 5 in sequence. The water pipes 12, 11, and 14 spray water onto the cultivation chamber 4. Pull the active toothed rod 2 left and right to rotate the cultivation chamber 4. After spraying, pull the push rod 19 forward to pull the buckle 18 out of the retaining ring 15. At this time, the slide 3 can be moved to the left. The vertical connecting rod 5 drives a vertical slide 3 to move to the left, thereby moving all the slides 3 away from the inner support frame 7, that is, away from the water nozzle 14 and the 11, so as to avoid blocking the growth of low-accumulation vegetables in the cultivation chamber 4.

[0054] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A screening and cultivation box for low-accumulation vegetables in polluted arable land, characterized in that, It includes a housing and a slide; Box body: The box body has a rectangular array of fixed internal support frames, and limit rods are fixedly connected between a row of internal support frames; Slide: The slide sleeve is outside the limiting rod. A vertical row of connecting rods is fixedly connected between the slides in a vertical row. Each slide has a turntable rotating inside its upper end. A power component is installed outside the turntable. The power component drives the turntable to rotate. A culture chamber is placed inside each turntable. A heavy metal test solution spraying assembly is installed on the chamber, with the outlet end of the heavy metal test solution spraying assembly facing the culture chamber.

2. The screening and cultivation box for low-accumulation vegetables in polluted arable land according to claim 1, characterized in that, The power assembly includes an active rack and a passive gear ring. Each turntable is fixedly fitted with a passive gear ring. A row of passive gear rings meshes with the active rack. The active rack and the limiting rod are arranged parallel to each other. The active rack moves laterally through the inner support frame. One end of the active rack moves out of the housing. A row of active racks are fixedly connected to each other.

3. The screening and cultivation box for low-accumulation vegetables in polluted arable land according to claim 1, characterized in that, The heavy metal test solution spraying assembly includes a heavy metal test solution loading tank, a water pump, horizontal water pipes, vertical water pipes, spray heads, and pipe supports. The number of heavy metal test solution loading tanks and water pumps is equal and equal to the number of rows in the culture chamber. The heavy metal test solution loading tanks and water pumps are fixedly installed on the side of the box. The water inlet of the water pump is connected to the heavy metal test solution loading tank. The water outlet of each water pump is fixedly connected to a vertical water pipe through a water pipe. The vertical water pipes go vertically downward into the box. The side of each vertical water pipe has a straight array of horizontal water pipes passing through it. Each horizontal water pipe is placed horizontally. The lower half of the side of the horizontal water pipe has a straight array of spray heads passing through it. The spray heads are located above the culture chamber. The horizontal water pipes are fixedly fitted with pipe supports in a straight array outside the horizontal water pipes. The pipe supports are fixed on the inner support frame. A controller is fixedly connected to the side of the housing. The input terminal of the controller is electrically connected to the output terminal of an external power supply, and the output terminal of the controller is electrically connected to the input terminal of the water pump.

4. The screening and cultivation box for low-accumulation vegetables in polluted arable land according to claim 1, characterized in that, A temporary locking assembly is installed between the inner support frame and the slide.

5. A screening and cultivation box for low-accumulation vegetables in polluted arable land according to claim 4, characterized in that, The temporary locking assembly includes a retaining ring, a buckle, and a push-pull rod. A retaining ring is fixedly connected to the lower side of a slide on a horizontal plane. A push-pull rod moves between the front and rear inner support frames. The side of the push-pull rod has a linear array of buckles formed integrally. When the slide approaches the inner support frame, the buckles move backward into the retaining ring.

6. The screening and cultivation box for low-accumulation vegetables in polluted arable land according to claim 1, characterized in that, The height of the four upper corners of the slide is higher than the height of the upper side of the turntable, so that the culture chamber is located between the four upper corners of the slide.

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