A compost product salt elimination device

Abstract

The utility model relates to composting technical field, concretely is a kind of compost product salt elimination device, including conveying frame, two groups of conveying roller are provided on conveying frame, and conveying motor is provided corresponding conveying roller, conveying mesh belt is sleeved between two groups of conveying roller, top sprinkling pipe is provided above conveying mesh belt, bottom sprinkling pipe is provided at the bottom end of the upper belt surface of conveying mesh belt, the bottom end of conveying frame is provided with collecting box, input end between top sprinkling pipe and bottom sprinkling pipe is jointly connected and is equipped with liquid inlet pipe, input end connection is equipped with proportional control valve in liquid inlet pipe, one input end connection is equipped with return pipe in proportional control valve, and other end connection is equipped with liquid supply pipe, liquid supply pipe is connected with clean water source, the tail end of return pipe extends to the return water suction assembly that is provided in collecting box, return salt-removing assembly and liquid storage assembly are sequentially provided on return pipe along water flow direction, the utility model can improve compost product salt elimination effect and efficiency, guarantee compost performance.

Description

Technical Field

[0001] This utility model relates to the field of composting technology, specifically to a device for removing salt from compost products. Background Technology

[0002] As an important way of resource utilization, the salt content of compost directly affects the performance and application effect of fertilizers. When the concentration of salt (such as sodium, chloride, potassium ions) in the soil is too high, a high osmotic pressure environment is formed, causing water in the crop root cells to permeate into the soil (reverse osmosis), resulting in "physiological drought" in crops. Even if the soil moisture content is sufficient, the crops cannot absorb water, eventually leading to wilting, yellowing leaves, stunted growth, and in severe cases, root necrosis and death of the entire plant.

[0003] Currently, most methods for removing salt from compost involve a single spraying and rinsing process, which only rinses the compost from one side. This results in insufficient salt dissolution, low removal efficiency, and poor effectiveness.

[0004] Meanwhile, the direct discharge of flushing wastewater consumes a large amount of water, which not only causes serious waste of water resources but may also lead to secondary pollution.

[0005] Therefore, there is an urgent need for a compost product salt removal device that can achieve efficient desalination, water resource recycling, and stable operation to solve the pain points of existing technologies. Utility Model Content

[0006] The purpose of this invention is to provide a device for removing salt from compost products, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a salt removal device for compost products, comprising a conveyor frame, two sets of conveyor rollers on the conveyor frame, a conveyor motor corresponding to each conveyor roller on the conveyor frame, a conveyor mesh belt sleeved between the two sets of conveyor rollers, a top spray pipe above the conveyor mesh belt, a bottom spray pipe at the bottom end of the upper surface of the conveyor mesh belt, a collection box at the bottom end of the conveyor frame, a liquid inlet pipe connected between the input ends of the top spray pipe and the bottom spray pipe, a proportional regulating valve connected to the input end of the liquid inlet pipe, a return pipe connected to one input end of the proportional regulating valve, and a supply pipe connected to the other end of the proportional regulating valve, the supply pipe being connected to a clean water source, a return water absorption component extending from the tail end of the return pipe into the collection box, and a return desalination component and a liquid storage component sequentially arranged along the water flow direction on the return pipe.

[0008] The present invention is further configured such that the reflux water absorption assembly includes a main water absorption pipe, and a plurality of water absorption branch pipes are provided on the main water absorption pipe. The water absorption branch pipes are flexible pipes, and each water absorption branch pipe is provided with a follow-up water absorption component at its tail end. By setting multiple water absorption branch pipes and water absorption heads, the liquid in the collection box can be uniformly drawn back, thereby improving the uniformity of liquid recycling.

[0009] The present invention is further configured such that the follow-up water suction component includes a float, the bottom end of which is provided with a water suction head, the output end of which is connected to the water suction branch pipe, and the input end of which is provided with a protective filter screen. By setting the float, the present invention can keep the water suction head floating above the liquid surface in the collection tank. In this way, the float is located on the liquid surface and the water suction head extends into the liquid surface, which can avoid the water suction head from contacting floating objects on the liquid surface and causing blockage. At the same time, it can also avoid the water suction head from contacting the bottom sediment and causing blockage, thus improving the smoothness of liquid back suction and utilization. The water suction branch pipe is a flexible pipe that can flexibly follow the changes in the liquid level in the collection tank and automatically adjust.

[0010] The present invention is further configured such that the reflux desalination assembly includes a nanofiltration module and a reverse osmosis module, which are sequentially arranged on a reflux pipe according to the reflux water flow direction. A first pump is installed on the reflux pipe near the collection tank side of the nanofiltration module. When the first pump is activated, a negative pressure is generated at the input end of the suction head, thereby extracting the saline liquid collected in the collection tank and sequentially transporting it to the nanofiltration module and the reverse osmosis module through the reflux pipe. The nanofiltration membrane has a pore size of 0.001-0.01 μm, a rejection rate of ≥90% for divalent ions (such as Ca²⁺, SO₄²⁻), and a rejection rate of ≥90% for monovalent ions (such as Na⁺, Cl⁻). With a desalination rate of 60%-80% and an operating pressure lower than reverse osmosis (0.2-0.5MPa), partial desalination is achieved, reducing brine hardness and separating organic matter from salt. Water then flows into the reverse osmosis module. The reverse osmosis membrane has a pore size ≤0.001μm (nanometer level). Pressure (typically 0.4-1.0MPa) is applied through the first pump to overcome osmotic pressure, allowing the brine to pass through the 0.0005μm pore size reverse osmosis membrane module. Water molecules permeate the membrane to form fresh water, while dissolved salts (Na⁺, Cl⁻) are retained by the membrane, achieving brine separation. The desalination rate can reach over 99%, effectively removing salt from the collected liquid, allowing for water recycling and reducing water waste.

[0011] The present invention is further configured such that the liquid storage component includes a liquid storage tank, the input end of which is connected to the output end of the reverse osmosis module, and the output end of the liquid storage tank is provided with a second pump body, which is connected to a proportional control valve through the cooperation of the second pump body and the return pipe. The liquid after filtration and desalination by the nanofiltration module and the reverse osmosis module can be stored in the liquid storage tank. In this way, the liquid storage tank can buffer a certain amount of regenerated water, thereby ensuring the stability of liquid supply during spraying operations. When the second pump body is started, the liquid in the liquid storage tank can be drawn out by the second pump body and transported to the proportional control valve through the return pipe. The proportional control valve controls the ratio of fresh water and return water to ensure sufficient supply.

[0012] The present invention is further configured such that a protective cover is provided on the conveyor frame, and the top spray pipe is installed inside the top of the protective cover, so that the top spray pipe can be stably installed and protected by the protective cover.

[0013] The present invention is further provided that the protective cover is provided with an observation window, through which the internal condition of the protective cover can be easily observed.

[0014] The present invention is further configured such that a drain pipe is provided on one side of the collection box, a valve is provided on the drain pipe, and a guide slope is provided inside the collection box. The guide slope gradually decreases in height in the opposite direction of the drain pipe. The design of the drain pipe can discharge impurities entering the collection box to the outside, thereby cleaning the collection box. The valve is used to control the opening and closing of the drain pipe. The design of the guide slope can better guide the collected impurities and improve the discharge effect.

[0015] Compared with existing technologies, the beneficial effects of this utility model are: 1. Highly efficient and thorough rinsing and desalination. A conveyor belt continuously transports the composting raw materials, and top and bottom spray pipes achieve synchronous rinsing from top to bottom, resulting in more complete salt dissolution. A proportional regulating valve at the supply end adjusts the ratio of fresh water to return water, ensuring a stable supply of rinsing solution, significantly improving the efficiency and effectiveness of salt removal, and ensuring subsequent composting performance.

[0016] 2. Water recycling saves energy and water. After the collection tank recovers the rinsing waste liquid, it is evenly absorbed by the reflux suction component, and then deeply desalinated in stages through nanofiltration and reverse osmosis modules, achieving a desalination rate of over 99%. The desalinated liquid is stored in a storage tank for recycling, reducing the consumption of fresh water, minimizing water waste, and balancing environmental protection and economy.

[0017] 3. Stable operation and excellent anti-clogging performance. The return suction unit uses a float paired with a flexible suction branch pipe, ensuring the suction head is always positioned in the lower middle part of the liquid surface, avoiding the risk of clogging by floating debris and bottom sediment. The collection tank is equipped with a guide slope and a drain pipe for easy cleaning of impurities; a protective cover protects the spray structure, and an observation window facilitates monitoring, ensuring long-term stable operation of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a salt removal device for compost products according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a salt removal device for compost products according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of a salt removal device for compost products according to this utility model. Figure 3 ; Figure 4 This is a cross-sectional view of the overall structure of this utility model; Figure 5 This is a schematic diagram of the installation structure of the follower-type water suction component in this utility model; Figure 6 This is a schematic diagram of the overall structure of the follower-type water-absorbing component in this utility model.

[0019] The components represented by each number in the attached diagram are listed below: 1. Conveyor frame; 2. Conveyor roller; 3. Conveyor motor; 4. Conveyor belt; 5. Top spray pipe; 6. Bottom spray pipe; 7. Collection box; 8. Inlet pipe; 9. Proportional regulating valve; 10. Return pipe; 11. Supply pipe; 12. Main suction pipe; 13. Branch suction pipe; 14. Follow-up suction component; 15. Float; 16. Suction head; 17. Protective filter screen; 18. Nanofiltration module; 19. Reverse osmosis module; 20. First pump body; 21. Storage tank; 22. Second pump body; 23. Protective cover; 24. Observation window; 25. Sewage pipe; 26. Valve; 27. Guide slope. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a technical solution: Please refer to Figures 1-6A salt removal device for compost products includes a conveyor frame 1, on which two sets of conveyor rollers 2 are installed, and a conveyor motor 3 is installed corresponding to the conveyor rollers 2. A conveyor mesh belt 4 is sleeved between the two sets of conveyor rollers 2. A top spray pipe 5 is installed above the conveyor mesh belt 4, and a bottom spray pipe 6 is installed at the bottom end of the upper surface of the conveyor mesh belt 4. A collection box 7 is installed at the bottom end of the conveyor frame 1. An inlet pipe 8 is connected between the input ends of the top spray pipe 5 and the bottom spray pipe 6. A proportional regulating valve 9 is connected to the input end of the inlet pipe 8. A return pipe 10 is connected to one input end of the proportional regulating valve 9, and a supply pipe 11 is connected to the other end. The supply pipe 11 is connected to a clean water source. A return water absorption component is installed at the tail end of the return pipe 10 into the collection box 7. A return desalination component and a liquid storage component are sequentially installed on the return pipe 10 along the water flow direction.

[0022] Please see Figures 1-6 As one embodiment of the present invention: the reflux water absorption assembly of the present invention includes a main water absorption pipe 12, and a plurality of water absorption branch pipes 13 are provided on the main water absorption pipe 12. The water absorption branch pipes 13 are flexible pipes, and each water absorption branch pipe 13 is provided with a follow-up water absorption component 14 at its tail end. By setting multiple water absorption branch pipes 13 and water absorption heads 16, the liquid in the collection box 7 can be uniformly drawn back, thereby improving the uniformity of liquid recycling.

[0023] Please see Figures 1-6 As one embodiment of this utility model: the follow-up water suction component 14 includes a float 15, and a water suction head 16 is provided at the bottom end of the float 15. The output end of the water suction head 16 is connected to the water suction branch pipe 13, and a protective filter screen 17 is provided at the input end of the water suction head 16. By setting the float 15, this utility model can keep the water suction head 16 floating on the upper end of the liquid surface in the collection tank 7. In this way, the float 15 is located on the liquid level surface, and the water suction head extends into the liquid surface, which can avoid the water suction head 16 from contacting the floating objects on the liquid surface and causing blockage. At the same time, it can also avoid the water suction head 16 from contacting the bottom sediment and causing blockage, thus improving the smoothness of liquid back suction. The water suction branch pipe 13 is a flexible pipe, which can flexibly follow the changes in the liquid level in the collection tank 7 and automatically adjust.

[0024] Please see Figures 1-6As one embodiment of this utility model: the reflux desalination component of this utility model includes a nanofiltration module 18 and a reverse osmosis module 19. The nanofiltration module 18 and the reverse osmosis module 19 are arranged sequentially on the reflux pipe 10 according to the reflux water flow direction. A first pump body 20 is provided on the reflux pipe 10 near the collection tank 7 side of the nanofiltration module 18. When the first pump body 20 is started, a negative pressure is generated at the input end of the suction head 16, thereby extracting the saline liquid collected in the collection tank 7 and sequentially transporting it to the nanofiltration module 18 and the reverse osmosis module 19 through the reflux pipe 10. The nanofiltration membrane has a pore size of 0.001-0.01μm and a rejection rate of ≥90% for divalent ions (such as Ca²⁺, SO₄²⁻). With a rejection rate of 60%-80% for monovalent ions (such as Na⁺ and Cl⁻) and an operating pressure lower than reverse osmosis (0.2-0.5 MPa), partial desalination is achieved, reducing brine hardness and separating organic matter from salt. Water then flows into the reverse osmosis module 19, where the membrane pore size is ≤0.001 μm (nanometer level). Pressure (typically 0.4-1.0 MPa) is applied via the first pump 20 to overcome osmotic pressure, allowing brine to pass through the 0.0005 μm pore size reverse osmosis membrane module. Water molecules permeate the membrane to form fresh water, while dissolved salts (Na⁺ and Cl⁻) are retained by the membrane, achieving brine separation. The desalination rate can reach over 99%, effectively removing salt from the collected liquid, enabling water recycling and reducing water waste.

[0025] Please see Figures 1-6 As one embodiment of this utility model: the liquid storage component of this utility model includes a liquid storage tank 21. The input end of the liquid storage tank 21 is connected to the output end of the reverse osmosis module 19. The output end of the liquid storage tank 21 is provided with a second pump body 22, which is connected to the proportional regulating valve 9 through the cooperation of the second pump body 22 and the return pipe 10. The liquid after filtration and desalination by the nanofiltration module 18 and the reverse osmosis module 19 can be stored in the liquid storage tank 21. In this way, the liquid storage tank can buffer a certain amount of regenerated water, thereby ensuring the stability of liquid supply during spraying operations. When the second pump body 22 is started, the liquid in the liquid storage tank 21 can be drawn out by the second pump body 22 and transported to the proportional regulating valve 9 through the return pipe 10. The proportional regulating valve 9 controls the ratio of fresh water and return water to ensure sufficient supply.

[0026] Please see Figures 1-6 As one embodiment of the present invention: the conveyor frame 1 is provided with a protective cover 23, and the top spray pipe 5 is installed inside the top of the protective cover 23. The protective cover 23 can achieve stable installation and protection of the top spray pipe 5.

[0027] Please see Figures 1-6As one embodiment of the present invention: the protective cover 23 is provided with an observation window 24, which facilitates observation of the internal condition of the protective cover 23.

[0028] Please see Figures 1-6 As one embodiment of this utility model: a drain pipe 25 is provided on one side of the collection box 7, and a valve 26 is provided on the drain pipe 25. A guide slope 27 is provided inside the collection box 7. The height of the guide slope 27 gradually decreases in the opposite direction to the drain pipe 25. Through the design of the drain pipe 25, impurities entering the collection box 7 can be discharged outward, thereby cleaning the collection box 7. The valve 26 is used to control the opening and closing of the drain pipe 25. The guide slope 27 can better guide the collected impurities and improve the discharge effect.

[0029] In summary: In use, the composting materials to be desalinated are transported by the conveyor belt 4. During this process, the conveyor motor 3 is started, and the operation of the conveyor roller 2 is controlled by the conveyor motor 3 to realize the movement control of the conveyor belt 4 and to transport the composting materials evenly. Fresh water is delivered to the inlet pipe 8 through the supply pipe 11, and then diverted to the top spray pipe 5 and the bottom spray pipe 6 through the inlet pipe 8, so that the composting raw materials being transported are washed from both the top and bottom. The salt dissolves in the water, washing away the salty substances. The waste liquid generated will fall through the mesh of the conveyor belt 4 under the action of gravity and fall into the collection box 7 for collection. Start the first pump body 20 to generate negative pressure at the input end of the suction head 16, thereby extracting the salt-containing liquid collected in the collection tank 7 and transporting it to the nanofiltration module 18 and the reverse osmosis module 19 in sequence through the cooperation of the suction branch pipe 13, the suction main pipe 12 and the return pipe 10. Among them, the nanofiltration membrane in nanofiltration module 18 can initially intercept and filter salt molecules in the return water, and the RO reverse osmosis membrane in reverse osmosis module 19 can deeply filter salt molecules in the liquid. Afterwards, the desalted liquid is transported to the storage tank 21 for storage. The second pump 22 is started, which can extract the liquid in the storage tank 21 and transport it to the proportional regulating valve 9 through the return pipe 10. The proportional regulating valve 9 controls the ratio of fresh water to return water to ensure sufficient supply. The return water and fresh water are mixed in the inlet pipe 8 and then transported to the top spray pipe 5 and the bottom spray pipe 6 respectively (the mixing effect is not required here, the main purpose is to ensure sufficient water supply) to rinse and spray the composting raw materials during transportation, remove the salt content, and ensure the subsequent composting effect. This utility model provides a follow-up suction element 14 at the input end of the suction branch pipe 13 and a float 15 to keep the suction head 16 floating above the liquid surface in the collection tank 7. In this way, the float 15 is located on the liquid surface and the suction head 16 extends into the liquid surface, which can prevent the suction head 16 from contacting floating objects on the liquid surface and causing blockage. It can also prevent the suction head 16 from contacting bottom sediment and causing blockage, thus improving the smoothness of liquid back suction and utilization. Among them, the water suction branch pipe 13 is a flexible pipe, which can flexibly follow the changes in the liquid level in the collection box 7 and automatically adjust accordingly. This invention employs a continuous conveying mesh belt with simultaneous top and bottom rinsing, which improves the effectiveness and efficiency of salt removal from composting raw materials. This ensures a more thorough and complete removal of salty substances from the composting raw materials, guaranteeing the performance of the fertilizer during subsequent composting.

[0030] In this utility model, the conveyor belt 4 is a stainless steel woven mesh, and the mesh size can be flexibly selected according to the characteristics of the compost raw materials.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for removing salt from compost products, comprising a conveyor frame (1), characterized in that: The conveyor frame (1) is equipped with two sets of conveyor rollers (2), and a conveyor motor (3) is provided on the conveyor frame (1) corresponding to the conveyor rollers (2). A conveyor mesh belt (4) is sleeved between the two sets of conveyor rollers (2). A top spray pipe (5) is provided above the conveyor mesh belt (4), and a bottom spray pipe (6) is provided at the bottom end of the upper surface of the conveyor mesh belt (4). A collection box (7) is provided at the bottom end of the conveyor frame (1). The top spray pipe (5) and the bottom spray pipe (6) are connected to the conveyor belt. The inlet pipe (8) is connected to the inlet end. The inlet pipe (8) is connected to the input end of the proportional regulating valve (9). One input end of the proportional regulating valve (9) is connected to the return pipe (10), and the other end is connected to the supply pipe (11). The supply pipe (11) is connected to a clean water source. The tail end of the return pipe (10) extends into the collection tank (7) and is equipped with a return water absorption component. The return pipe (10) is equipped with a return desalination component and a liquid storage component in sequence along the water flow direction.

2. The compost product salt removal device according to claim 1, characterized in that: The backflow water absorption assembly includes a main water absorption pipe (12), and a plurality of water absorption branch pipes (13) are provided on the main water absorption pipe (12). The water absorption branch pipes (13) are flexible pipes, and each water absorption branch pipe (13) is provided with a follow-up water absorption component (14) at its tail end.

3. The compost product salt removal device according to claim 2, characterized in that: The follow-up water suction component (14) includes a float (15), the bottom end of which is provided with a water suction head (16), the output end of which is connected to the water suction branch pipe (13), and the input end of which is provided with a protective filter screen (17).

4. The compost product salt removal device according to claim 1, characterized in that: The reflux desalination assembly includes a nanofiltration module (18) and a reverse osmosis module (19). The nanofiltration module (18) and the reverse osmosis module (19) are arranged sequentially on the reflux pipe (10) in the direction of reflux water flow. A first pump body (20) is provided on the reflux pipe (10) of the nanofiltration module (18) near the collection box (7).

5. A compost product salt removal device according to claim 4, characterized in that: The liquid storage assembly includes a liquid storage tank (21), the input end of which is connected to the output end of the reverse osmosis module (19). The output end of the liquid storage tank (21) is provided with a second pump body (22), and is connected to the proportional regulating valve (9) through the cooperation of the second pump body (22) and the return pipe (10).

6. The compost product salt removal device according to claim 1, characterized in that: The conveyor frame (1) is provided with a protective cover (23), and the top spray pipe (5) is installed at the top inside the protective cover (23).

7. A compost product salt removal device according to claim 6, characterized in that: The protective cover (23) is provided with an observation window (24).

8. The compost product salt removal device according to claim 1, characterized in that: A drain pipe (25) is provided on one side of the collection box (7), and a valve (26) is provided on the drain pipe (25). A guide slope (27) is provided inside the collection box (7), and the height of the guide slope (27) gradually decreases in the opposite direction to the drain pipe (25).

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