Cotton stalk composting device and method

Abstract

The invention belongs to the technical field of composting treatment, and particularly relates to a cotton stalk composting device and method.The cotton stalk composting device comprises a composting box, a smashing outer box is arranged above the composting box, a feeding channel is formed in the bottom of the smashing outer box and communicated with the composting box, a smashing inner box is arranged in the smashing outer box, and an expanding type feeding opening is formed in the top of the smashing inner box; dense leakage holes are formed in the circumferential outer wall of the inner smashing box, a sliding opening for limiting the inner smashing box is formed in the top of the outer smashing box, a first motor is fixed to one end of the outer smashing box, an output shaft of the first motor is connected with a smashing roller located in the inner smashing box, and the inner smashing box is connected with a driving assembly. According to the device, cotton stalks can be completely crushed in the crushing inner box, the crushed cotton stalks fall down through the material leakage holes and then enter the composting box through the feeding channel, and the driving assembly can drive the crushing inner box to move back and forth in the direction of the sliding opening, so that crushing and blanking of the cotton stalks are accelerated.

Description

Technical Field

[0001] The present invention relates to the technical field of composting treatment, and particularly relates to a composting device and method for cotton stalks. Background Art

[0002] Composting is to use plant residues, such as straws, weeds, leaves, etc. as the main raw materials, and mix with human, livestock, poultry feces and other liquid manure, and decompose through composting to form organic fertilizers; the organic fertilizers contain rich nutrients and have long and stable fertilizer effects.

[0003] In order to solve the problem of uneven crushing of existing equipment, a Chinese patent with the publication number of CN220056677U discloses a straw crushing and composting device, including a crushing box and a composting box, and is characterized in that: the crushing box is arranged above the composting box, and a crushing mechanism is arranged in the inner cavity of the crushing box; a funnel-shaped guide pipe with a large upper part and a small lower part is arranged below the crushing mechanism and in the inner cavity of the crushing box; a sliding plate is arranged below the guide pipe, and the front and rear sides of the sliding plate are respectively slidably connected with the side walls of the inner cavity of the crushing box. The left and right ends of the sliding plate are respectively provided with connecting sliding rods, and the ends of the connecting sliding rods far away from the sliding plate penetrate through the corresponding side walls of the crushing box. The bottom surface of the sliding plate is in sliding contact with the bottom surface of the inner cavity of the crushing box; a discharge port is opened in the middle of the bottom surface of the crushing box, and a sieve mesh is arranged at the discharge port. A funnel-shaped guide port with a large upper part and a small lower part is opened in the middle of the sliding plate corresponding to the discharge port, and multiple grinding rollers with parallel central axes are arranged at the bottom of the guide port; a mixing cavity is arranged in the composting box, and a mixing mechanism is arranged in the mixing cavity. The top of the mixing cavity is communicated with the discharge port through a communicating pipe. Although the existing technical problems are solved, there are still the following problems:

[0004] This technical solution performs sequential crushing through two crushing mechanisms. Since the crushing mechanisms are different, it means that the crushed specifications are different. Then the straws after the first crushing will be crushed again in the lower crushing mechanism, which leads to a serious reduction in the crushing efficiency. Therefore, corresponding improvements are made to solve this problem. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes a composting device and method for cotton stalks.

[0006] A composting device for cotton stalks proposed by the present invention includes a composting box. Above the composting box, there is a crushing outer box. The bottom of the crushing outer box is provided with a feeding channel, and the feeding channel communicates with the composting box. On both sides of the composting box, there are respectively feeding pipes. The bottom of the composting box is provided with a discharging pipe, and a valve is installed on the discharging pipe. Inside the crushing outer box, there is a crushing inner box. The top of the crushing inner box is provided with an expanding feeding port. Dense leakage holes are opened on the circumferential outer wall of the crushing inner box. On the top of the crushing outer box, there is a sliding opening for limiting the crushing inner box. One end of the crushing outer box is fixed with a first motor, and the output shaft of the first motor is connected with a crushing roller located inside the crushing inner box. Both ends of the crushing roller pass through the crushing inner box and are rotatably connected with the crushing outer box. The crushing inner box is connected with a driving component, and the driving component is used to drive the crushing inner box to move back and forth along the direction of the sliding opening. The cotton stalks are put into the crushing inner box from the feeding port. The output shaft of the first motor drives the crushing roller to rotate, and the cotton stalks are completely crushed inside the crushing inner box. The crushed cotton stalks fall through the leakage holes, and then enter the composting box through the feeding channel. The driving component will drive the crushing inner box to move back and forth along the direction of the sliding opening, thereby accelerating the crushing and falling of the cotton stalks. Then, feces and bacterial liquid are introduced through the feeding pipes, and regular stirring is carried out for fermentation. After complete fermentation, the valve on the discharging pipe is opened, and the fertilizer can be discharged.

[0007] Preferably, the driving component includes a rotating plate and a plurality of springs. The rotating plate is fixedly sleeved on one end of the shaft of the crushing roller. The plurality of springs are fixedly arranged between the crushing inner box and the crushing outer box in an annular array. A pushing structure is arranged on the rotating plate. When the crushing roller rotates, it synchronously drives the rotating plate to rotate. Then, the rotating plate will periodically push the crushing inner box to one side through the pushing structure. Coupled with the springs, the crushing inner box will move back and forth.

[0008] Preferably, the pushing structure includes a first magnet and a second magnet. The two first magnets are respectively fixed at both ends of the rotating plate. The plurality of second magnets are fixedly arranged in an annular array at one end of the crushing inner box close to the rotating plate. When the rotating plate rotates, it synchronously drives the first magnet to rotate. When the first magnet and the second magnet approach each other, a thrust will be generated on the crushing inner box. When the first magnet and the second magnet move away from each other, the crushing inner box will move back under the action of the spring.

[0009] Preferably, the pushing structure includes a first ball block and a second ball block that can contact each other. The two first ball blocks are respectively fixed at both ends of the rotating plate. The plurality of second ball blocks are fixedly arranged in an annular array at one end of the crushing inner box close to the rotating plate. When the rotating plate rotates, it synchronously drives the first ball block to rotate. When the first ball block and the second ball block approach each other, a thrust will be generated on the crushing inner box through the pushing between the two. When the first magnet and the second magnet move away from each other, the crushing inner box will move back under the action of the spring.

[0010] Preferably, a stirring frame is rotatably connected inside the composting bin, and a second motor is fixed at one end of the composting bin. The output shaft of the second motor is fixedly connected to the end of the stirring frame. By regularly starting the second motor, the output shaft of the second motor drives the stirring frame to rotate, and the mixture inside the composting bin can be stirred.

[0011] Preferably, a temperature and humidity sensor, a gas sensor, and a PH sensor are fixed on the inner wall of the top of the composting bin, and a data processing module and a data analysis module are fixed at the front end of the composting bin. The temperature and humidity sensor is used to monitor the compost temperature and humidity, the gas sensor is used to measure the gas concentrations of oxygen and carbon dioxide inside the composting bin, the PH sensor is used to detect the acidity and alkalinity of the compost, and the data processing module includes a microcontroller and a wireless communication module: the microcontroller is used to collect and process the data transmitted by the temperature and humidity sensor, the gas sensor, and the PH sensor, the wireless communication module is used to achieve data transmission and remote monitoring, and the data analysis module is used for detecting the mixing uniformity and the fermentation completeness; in this way, it can be intelligently judged whether the mixing of the fertilizer is uniform and whether the fermentation is complete.

[0012] Preferably, the temperature and humidity sensor, the gas sensor, and the PH sensor are all electrically connected to the data processing module, and the data processing module is electrically connected to the data analysis module.

[0013] Preferably, the calculation formula for detecting the mixing uniformity is:

[0014]

[0015] where σ 2 is the variance, N is the number of samples, x i is the measured value of the i-th sample such as humidity or temperature, μ is the sample mean, and the smaller the variance σ 2 , the more uniform the mixing.

[0016] Preferably, the calculation formula for detecting the fermentation completeness is:

[0017]

[0018] where ΔT is the temperature change rate, T max is the highest temperature, T min is the lowest temperature, t is the time, and the decrease of the temperature change rate ΔT indicates that the fermentation tends to be complete.

[0019] The present invention also provides a composting method for a composting device of cotton stalks, including the following steps:

[0020] S1. Start the equipment and put the cotton stalks into the crushing inner box from the feed inlet;

[0021] S2. The output shaft of the first motor drives the crushing roller to rotate, completely crushing the cotton stalks in the crushing inner box. The crushed cotton stalks fall through the material leakage holes, then enter the composting box through the feeding channel. Next, feces and bacterial liquid are introduced through the feeding pipe. The second motor is periodically started, and the output shaft of the second motor drives the stirring frame to rotate, stirring the mixture in the composting box.

[0022] S3. The temperature and humidity of the compost are monitored by a temperature and humidity sensor, the gas concentrations of oxygen and carbon dioxide in the composting box are measured by a gas sensor, the pH value of the compost is detected by a pH sensor, the microcontroller collects and processes the data transmitted by the temperature and humidity sensor, gas sensor and pH sensor, the wireless communication module realizes data transmission and remote monitoring, and the data analysis module conducts detection of mixing uniformity and fermentation completeness.

[0023] S4. After complete fermentation, the valve on the discharge pipe is opened to discharge the fertilizer.

[0024] Compared with the prior art, the present invention provides a composting device and method for cotton stalks, having the following beneficial effects:

[0025] 1. A composting device and method for cotton stalks can continuously crush the cotton stalks in the crushing inner box until they are completely crushed by setting the crushing inner box, and a driving component is provided to accelerate the crushing and falling of the cotton stalks.

[0026] 2. A composting device and method for cotton stalks, when the crushing roller rotates, it synchronously drives the rotating plate to rotate. Then the rotating plate will periodically push the crushing inner box to one side through the pushing structure, and together with the spring, the crushing inner box will move back and forth, accelerating the crushing and falling of the cotton stalks.

[0027] 3. A composting device and method for cotton stalks can intelligently judge whether the fertilizer is evenly mixed and whether the fermentation is complete through calculation formulas by setting a temperature and humidity sensor, a gas sensor, a pH sensor, a data processing module and a data analysis module. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of a composting device for cotton stalks proposed by the present invention;

[0029] Figure 2 is the internal structural schematic diagram of the crushing outer box of a composting device for cotton stalks proposed by the present invention;

[0030] Figure 3 is the structural schematic diagram of the crushing inner box of a composting device for cotton stalks proposed by the present invention;

[0031] Figure 4 For the present invention Figure 3Schematic diagram of the enlarged structure at position A;

[0032] Figure 5 Internal structure schematic diagram of the composting box of a composting device for cotton stalks proposed by the present invention;

[0033] Figure 6 Schematic diagram of the principle of a composting device for cotton stalks proposed by the present invention.

[0034] In the figure: 1. Composting box; 2. Crushing outer box; 3. Feeding channel; 4. Slide opening; 5. Crushing inner box; 6. Leakage holes; 7. First motor; 8. Crushing roller; 9. Feeding pipe; 10. Discharge pipe; 11. Spring; 12. Rotating plate; 13. First magnet; 14. Second magnet; 15. First ball block; 16. Second ball block; 17. Second motor; 18. Stirring frame; 19. Temperature and humidity sensor; 20. Gas sensor; 21. PH sensor; 22. Data processing module; 23. Data analysis module. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] Refer to Figures 1-6 , a composting device for cotton stalks, including a composting box 1. A crushing outer box 2 is arranged above the composting box 1. A feeding channel 3 is provided at the bottom of the crushing outer box 2. The feeding channel 3 communicates with the composting box 1. Feeding pipes 9 are respectively arranged on both sides of the composting box 1. A discharge pipe 10 is provided at the bottom of the composting box 1. A valve is installed on the discharge pipe 10. A crushing inner box 5 is arranged inside the crushing outer box 2. An expanded feeding port is provided at the top of the crushing inner box 5. Dense leakage holes 6 are formed on the circumferential outer wall of the crushing inner box 5. A slide opening 4 for limiting the crushing inner box 5 is provided at the top of the crushing outer box 2. A first motor 7 is fixed at one end of the crushing outer box 2. The output shaft of the first motor 7 is connected with a crushing roller 8 located inside the crushing inner box 5. Both ends of the crushing roller 8 respectively pass through the crushing inner box 5 and are rotatably connected with the crushing outer box 2. The crushing inner box 5 is connected with a driving assembly, and the driving assembly is used to drive the crushing inner box 5 to move back and forth along the direction of the slide opening 4;

[0038] It should be noted that the cotton stalks are put into the crushing inner box 5 from the feeding port. The output shaft of the first motor 7 drives the crushing roller 8 to rotate, completely crushing the cotton stalks in the crushing inner box 5. The crushed cotton stalks fall through the leakage holes 6 and then enter the composting box 1 through the feeding channel 3. The driving assembly will drive the crushing inner box 5 to move back and forth along the direction of the sliding port 4, thereby accelerating the crushing and falling of the cotton stalks. Then, feces and bacterial liquid are introduced through the feeding pipe 9, and regular stirring is carried out for fermentation. After complete fermentation, the valve on the discharge pipe 10 is opened to discharge the fertilizer.

[0039] Among them, the driving assembly includes a rotating plate 12 and a plurality of springs 11. The rotating plate 12 is fixedly sleeved at one end of the shaft of the crushing roller 8. The plurality of springs 11 are fixedly arranged between the crushing inner box 5 and the crushing outer box 2 in an annular array. A pushing structure is provided on the rotating plate 12;

[0040] It should be noted that when the crushing roller 8 rotates, it synchronously drives the rotating plate 12 to rotate. Then, the rotating plate 12 will periodically push the crushing inner box 5 to one side through the pushing structure. Together with the springs 11, the crushing inner box 5 will move back and forth.

[0041] In Embodiment 1, the pushing structure includes a first magnet 13 and a second magnet 14. The two first magnets 13 are respectively fixed at both ends of the rotating plate 12. The plurality of second magnets 14 are fixedly arranged in an annular array at one end of the crushing inner box 5 close to the rotating plate 12;

[0042] It should be noted that when the rotating plate 12 rotates, it synchronously drives the first magnet 13 to rotate. When the first magnet 13 and the second magnet 14 approach each other, a thrust will be generated on the crushing inner box 5. When the first magnet 13 and the second magnet 14 move away from each other, the crushing inner box 5 will move back under the action of the spring 11.

[0043] In Embodiment 2, the pushing structure includes a first ball block 15 and a second ball block 16 that can contact each other. The two first ball blocks 15 are respectively fixed at both ends of the rotating plate 12. The plurality of second ball blocks 16 are fixedly arranged in an annular array at one end of the crushing inner box 5 close to the rotating plate 12;

[0044] It should be noted that when the rotating plate 12 rotates, it synchronously drives the first ball block 15 to rotate. When the first ball block 15 and the second ball block 16 approach each other, a thrust will be generated on the crushing inner box 5 through the pushing between the two. When the first magnet 13 and the second magnet 14 move away from each other, the crushing inner box 5 will move back under the action of the spring 11.

[0045] Furthermore, a stirring frame 18 is rotatably connected in the composting box 1. A second motor 17 is fixed at one end of the composting box 1. The output shaft of the second motor 17 is fixedly connected to the end of the stirring frame 18;

[0046] It should be noted that by regularly starting the second motor 17, the output shaft of the second motor 17 drives the stirring frame 18 to rotate, and the mixture in the composting box 1 can be stirred.

[0047] Furthermore, a temperature and humidity sensor 19, a gas sensor 20, and a PH sensor 21 are fixed to the inner wall of the top of the composting box 1, and a data processing module 22 and a data analysis module 23 are fixed to the front end of the composting box 1. The temperature and humidity sensor 19 is used to monitor the compost temperature and humidity, the gas sensor 20 is used to measure the gas concentrations of oxygen and carbon dioxide in the composting box 1, the PH sensor 21 is used to detect the acidity and alkalinity of the compost, and the data processing module 22 includes a microcontroller and a wireless communication module: the microcontroller is used to collect and process the data transmitted by the temperature and humidity sensor 19, the gas sensor 20, and the PH sensor 21, and the wireless communication module is used to achieve data transmission and remote monitoring. The data analysis module 23 is used for detecting the mixing uniformity and the fermentation completeness;

[0048] It should be noted that in this way, it is possible to intelligently judge whether the mixing of the fertilizer is uniform and whether the fermentation is complete.

[0049] Among them, the temperature and humidity sensor 19, the gas sensor 20, and the PH sensor 21 are all electrically connected to the data processing module 22, and the data processing module 22 is electrically connected to the data analysis module 23.

[0050] Among them, the calculation formula for detecting the mixing uniformity is:

[0051]

[0052] Among them, σ 2 is the variance, N is the number of samples, x i is the measured value of the i-th sample such as humidity or temperature, μ is the sample mean, and the smaller the variance σ 2 , the more uniform the mixing.

[0053] Among them, the calculation formula for detecting the fermentation completeness is:

[0054]

[0055] Among them, ΔT is the temperature change rate, T max is the highest temperature, T min is the lowest temperature, t is the time, and the decrease in the temperature change rate ΔT indicates that the fermentation tends to be complete.

[0056] The present invention also provides a composting method for a composting device of cotton stalks, including the following steps:

[0057] S1. Start the equipment and put the cotton stalks into the crushing inner box 5 from the feed inlet;

[0058] S2. The output shaft of the first motor 7 drives the crushing roller 8 to rotate, completely crushing the cotton stalks in the inner crushing box 5. The crushed cotton stalks fall through the material leakage holes 6, then enter the composting box 1 through the feeding channel 3. Next, feces and bacterial liquid are introduced through the feeding pipe 9. The second motor 17 is started regularly, and the output shaft of the second motor 17 drives the stirring frame 18 to rotate to stir the mixture in the composting box 1;

[0059] S3. The temperature and humidity of the compost are monitored by the temperature and humidity sensor 19, the gas concentrations of oxygen and carbon dioxide in the composting box 1 are measured by the gas sensor 20, the pH value of the compost is detected by the pH sensor 21. The microcontroller collects and processes the data transmitted by the temperature and humidity sensor 19, the gas sensor 20 and the pH sensor 21. The wireless communication module realizes data transmission and remote monitoring, and the mixing uniformity detection and fermentation completeness detection are carried out through the data analysis module 23;

[0060] S4. After the fermentation is complete, open the valve on the discharge pipe 10 to discharge the fertilizer.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A cotton stalk composting device, comprising a composting box (1), characterized in that: An outer crushing box (2) is arranged above the compost box (1), a feeding channel (3) is arranged at the bottom of the outer crushing box (2), and the feeding channel (3) is communicated with the compost box (1), feeding pipes (9) are arranged on both sides of the compost box (1), a discharge pipe (10) is arranged at the bottom of the compost box (1), and a valve is installed on the discharge pipe (10), an inner crushing box (5) is arranged inside the outer crushing box (2), an expansion-type feed port is arranged at the top of the inner crushing box (5), and a densely distributed drain hole is opened on the circumferential outer wall of the inner crushing box (5). A material hole (6) is formed on the top of the pulverizing outer box (2), and a sliding opening (4) for limiting the position of the pulverizing inner box (5) is provided. A first motor (7) is fixed to one end of the pulverizing outer box (2). The output shaft of the first motor (7) is connected to a pulverizing roller (8) located inside the pulverizing inner box (5). Both ends of the pulverizing roller (8) respectively pass through the pulverizing inner box (5) and are rotatably connected to the pulverizing outer box (2). The pulverizing inner box (5) is connected to a driving assembly, and the driving assembly is used to drive the pulverizing inner box (5) to move back and forth along the direction of the sliding opening (4).

2. A cotton stalk composting device according to claim 1, characterized in that: The driving assembly comprises a rotating plate (12) and a plurality of springs (11); the rotating plate (12) is fixedly sleeved on one end of the shaft of the pulverizing roller (8); the plurality of springs (11) are distributed in a ring array and fixed between the pulverizing inner box (5) and the pulverizing outer box (2); and a pushing structure is arranged on the rotating plate (12).

3. A cotton stalk composting device according to claim 2, characterized in that: The pushing structure comprises a first magnet (13) and a second magnet (14), wherein the two first magnets (13) are respectively fixed at two ends of a rotating plate (12), and a plurality of second magnets (14) are distributed in a circular array and fixed at one end of the pulverizing inner box (5) close to the rotating plate (12).

4. A cotton stalk composting device according to claim 2, characterized in that: The pushing structure comprises a first ball block (15) and a second ball block (16) which can contact each other, the two first ball blocks (15) are respectively fixed at two ends of the rotating plate (12), and a plurality of second ball blocks (16) are distributed in a circular array and fixed at one end of the crushing inner box (5) close to the rotating plate (12).

5. The cotton stalk composting device according to claim 1, characterized in that: A stirring frame (18) is rotatably connected inside the compost box (1), a second motor (17) is fixed to one end of the compost box (1), and an output shaft of the second motor (17) is fixedly connected to the end of the stirring frame (18).

6. The cotton stalk composting device according to claim 1, characterized in that: A temperature and humidity sensor (19), a gas sensor (20) and a pH sensor (21) are fixed to the top inner wall of the compost box (1); a data processing module (22) and a data analysis module (23) are fixed to the front end of the compost box (1); the temperature and humidity sensor (19) is used to monitor the temperature and humidity of the compost; the gas sensor (20) is used to measure the gas concentrations of oxygen and carbon dioxide in the compost box (1); the pH sensor (21) is used to detect the acidity and alkalinity of the compost; the data processing module (22) comprises a microcontroller and a wireless communication module: the microcontroller is used to collect and process data transmitted by the temperature and humidity sensor (19), the gas sensor (20) and the pH sensor (21); the wireless communication module is used to realize data transmission and remote monitoring; and the data analysis module (23) is used to detect mixing uniformity and fermentation completeness.

7. A cotton stalk composting device according to claim 6, characterized in that: The temperature and humidity sensor (19), the gas sensor (20) and the pH sensor (21) are all electrically connected to the data processing module (22), and the data processing module (22) is electrically connected to the data analysis module (23).

8. The cotton stalk composting device according to claim 6, characterized in that: The calculation formula for the mixing uniformity detection is: Among them, σ 2 is the variance, N is the number of samples, x i is the measured value of the i-th sample (such as humidity or temperature), μ is the sample mean, and variance σ 2 The smaller the size, the more uniform the mix.

9. The cotton stalk composting device according to claim 6, characterized in that: The calculation formula for the fermentation completeness test is: Where ΔT is the temperature change rate, T max is the maximum temperature, T min is the minimum temperature, t is the time, and a decrease in the temperature change rate ΔT indicates that the fermentation is approaching completion.

10. A composting method of a cotton stalk composting device, characterized in that: The steps include: S1, start the equipment and put the cotton stalks into the crushing inner box (5) from the feed inlet; S2, the output shaft of the first motor (7) drives the crushing roller (8) to rotate, and the cotton stalks are completely crushed in the crushing inner box (5). The crushed cotton stalks fall through the leakage hole (6) and then enter the compost box (1) through the feeding channel (3). Then, feces and bacterial liquid are introduced from the feeding pipe (9). The second motor (17) is started regularly, and the output shaft of the second motor (17) drives the stirring frame (18) to rotate to stir the mixture in the compost box (1); S3, monitoring the temperature and humidity of the compost through the temperature and humidity sensor (19), measuring the gas concentration of oxygen and carbon dioxide in the compost bin (1) through the gas sensor (20), detecting the pH value of the compost through the pH sensor (21), collecting and processing the data transmitted by the temperature and humidity sensor (19), the gas sensor (20) and the pH sensor (21), realizing data transmission and remote monitoring through the wireless communication module, and performing mixing uniformity detection and fermentation completeness detection through the data analysis module (23); S4. After the fermentation is complete, open the valve on the discharge pipe (10) to discharge the fertilizer.

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