High-pressure loose material precision water control discharging device

Abstract

The utility model relates to solid waste treatment equipment technical field discloses a kind of high-pressure loose material precision water control discharging device, including drying bin, distributing cone, deflector, moisture detection mechanism and distributing cone drive mechanism;Drying bin includes discharge hopper, discharge hopper is the conical structure of gradually reducing from top to bottom in diameter, and is equipped with discharge port;Distributing cone and deflector are coaxially arranged in the inside of discharge hopper, distributing cone is circular conical and inclines downward, and annular passageway is formed between it and the inner wall of discharge hopper, deflector is conical helical and arranged below distributing cone, outer diameter gradually increases from top to bottom, and it extends downward obliquely towards the inner wall of discharge hopper;Moisture detection mechanism is arranged at discharge port;Distributing cone drive mechanism is arranged in discharge hopper, and is drivingly connected with distributing cone.The utility model can solve how to reduce the moisture content fluctuation range of discharge, ensure that the moisture content fluctuation range of discharge meets the process requirement, and how to reduce the edge arching rate, prevent the problem of material jamming of discharge port.

Description

Technical Field

[0001] This utility model relates to the technical field of solid waste treatment equipment, specifically to a device for precise water control and discharge of high-pressure loose materials. Background Technology

[0002] Sludge biological drying technology is a highly efficient and environmentally friendly disposal method in the field of solid waste treatment. This technology utilizes the heat generated by microbial metabolism, combined with a forced ventilation system, to promote the evaporation of moisture from the sludge, ultimately reducing the sludge moisture content from over 80% to below 40%, forming dry material that can be utilized as a resource. The sludge drying silo is the core equipment of the biological drying process. Existing sludge drying silos generally use a straight cylindrical or ordinary conical discharge outlet, but such structures have the following drawbacks in actual operation: First, due to the influence of gravity settling and heat and mass transfer during the sludge drying process, the moisture content of the material in the drying chamber exhibits a gradient distribution characteristic from top to bottom (i.e., the upper layer has a higher moisture content, and the lower layer has a lower moisture content). However, due to structural limitations, the material flow at traditional discharge outlets exhibits a phenomenon of "fast flow velocity in the center and stagnant flow at the edges." This characteristic causes the high-moisture material in the upper layer to be discharged prematurely, while the low-moisture material in the lower layer remains in the chamber. Actual measurement data shows that the finished product moisture content of this type of structure fluctuates by more than ±8%, far exceeding the process requirement of ±2% control target.

[0003] Secondly, the dried sludge has poor fluidity. In a typical conical discharge port, material flow follows the principle of "path of least resistance," resulting in a typical "mouse hole effect" (i.e., material in the central area flows and falls more easily under gravity and pressure, while material in the edge area tends to accumulate due to friction, forming a static arch structure). As the operating time increases, the material trapped at the edge will harden and arch due to continuous pressure, eventually leading to material jamming at the discharge port.

[0004] In large-scale sludge drying projects, to improve the processing capacity of a single silo, the design height of the drying silo is generally 5 to 15 meters, and the material pressure inside the silo can reach 50 to 150 kPa. Under these conditions, the defects in the discharge structure of existing sludge drying silos are further amplified. Therefore, to address the defects in the discharge structure of existing sludge drying silos, it is necessary to develop a high-pressure loose material precision water control discharge device that combines precise water control with uniform unloading. Utility Model Content

[0005] (a) Technical problems to be solved This utility model provides a high-pressure loose material precise moisture control discharge device, which can at least solve the following technical problems: how to reduce the fluctuation range of discharge moisture content, ensure that the fluctuation range of discharge moisture content meets the process requirements, and how to reduce the edge arching rate to prevent material jamming at the discharge port.

[0006] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-pressure loose material precise water control and discharge device, comprising: The drying chamber includes a discharge hopper, which has a cone-shaped structure with a diameter that gradually decreases from top to bottom, and a discharge port is provided at the bottom end of the discharge hopper. The material distribution cone and the guide plate are coaxially arranged inside the discharge hopper. The material distribution cone is conical and tilts downward. An annular material passage is formed between the material distribution cone and the inner wall of the discharge hopper. The guide plate is arranged in a conical spiral shape below the material distribution cone. The outer diameter of the guide plate gradually increases from top to bottom, and the guide plate tilts downward toward the inner wall of the discharge hopper. A moisture detection device is located at the outlet of the drying chamber and is used to detect the moisture content of the material inside the drying chamber. The material distribution cone drive mechanism is located inside the discharge hopper and is connected to the material distribution cone drive mechanism. The material distribution cone drive mechanism is used to drive the material distribution cone to rotate according to the detection results of the moisture detection mechanism.

[0007] In a further configuration, a switch gate is provided at the discharge port of the aforementioned discharge hopper. The switch gate includes a gate plate and a gate plate driving mechanism. The gate plate is slidably disposed at the discharge port of the drying chamber, and the gate plate driving mechanism is installed outside the drying chamber and is connected to the gate plate for transmission. The gate plate driving mechanism is used to drive the gate plate to slide towards or away from the discharge port in order to close or open the discharge port.

[0008] Furthermore, the aforementioned high-pressure loose material precision water control and discharge device also includes a pressure balancing mechanism, which includes a pressure balancing pipe and a negative pressure fan. The negative pressure fan is installed outside the drying chamber, and one end of the pressure balancing pipe is connected to the drying chamber, while the other end is connected to the negative pressure fan.

[0009] Furthermore, the aforementioned switch also includes: A porous grid plate is installed inside the discharge hopper and located between the guide plate and the gate plate. The porous grid plate is conical in shape and tilts downward. The lifting mechanism is fixed inside the drying chamber and is connected to the perforated grid plate via a transmission. The lifting mechanism is used to drive the perforated grid plate to move up and down between the first position and the second position. In the first position, the outer edge of the perforated grid plate abuts against the inner wall of the discharge hopper; in the second position, an annular discharge channel is formed between the perforated grid plate and the inner wall of the discharge hopper.

[0010] In a further configuration, the aforementioned porous grid plate is fixed below the guide plate, and when the porous grid plate is in the first position, the bottom end of the guide plate and the outer edge of the porous grid plate are both in contact with the inner wall of the discharge hopper.

[0011] In a further configuration, two gates are symmetrically arranged, and a sealing layer is provided on the opposite side of each gate. The gate drive mechanism is connected to the two gates and is used to drive the two gates away from each other or closer to each other to close or close the discharge port.

[0012] Furthermore, the aforementioned high-pressure loose material precision water control and discharge device also includes a vibration mechanism, which is located on the bottom surface of the guide plate and is used to vibrate the guide plate.

[0013] (III) Beneficial Effects Compared with the prior art, the high-pressure loose material precision water control and discharge device provided by this utility model has the following beneficial effects: 1. The high-pressure loose material precision water control discharge device provided by this utility model guides the material in the drying chamber from the center to the edge through the combination of the material distribution cone and the guide plate located in the center of the discharge hopper, and then outputs the material from the edge of the discharge port. This prevents the material from flowing directly downward from the center of the discharge port, avoids the upper high-moisture material from being discharged directly from the center in advance, thereby effectively reducing the range of discharge moisture content fluctuation and greatly reducing the edge arching rate, effectively preventing material from being stuck at the discharge port.

[0014] 2. This utility model can detect the moisture content of the material in the drying chamber in real time through a moisture detection mechanism. Combined with the distribution cone drive mechanism, it can adjust the rotation speed of the distribution cone during unloading according to the material moisture content. When the distribution cone rotates, it can generate centrifugal force. The faster the rotation speed of the distribution cone, the greater the centrifugal force, and the more it can drive the material in the drying chamber to flow towards the edge. In this way, the flow state of the material in the discharge hopper can be precisely controlled, thereby achieving precise water control of high-pressure loose materials during the discharge process. This solves the coupling contradiction between moisture content stratification and uneven flow, ensuring that the discharge moisture content meets the process requirement of ≤20%±2%. At the same time, it can eliminate the risk of edge arching. It is applicable to sludge drying, biomass fuel preparation and other fields. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the high-pressure loose material precision water control and discharge device in the embodiment in the non-discharge state; Figure 2 This is a cross-sectional view of the high-pressure loose material precision water control and discharge device in the unloading state in the embodiment.

[0016] Icon labels: 1. Drying bin; 11. Discharge hopper; 12. Discharge port; 13. Support frame; 2. Material distribution cone; 21. Material passageway; 3. Guide vane; 4. Moisture detection mechanism; 5. Material distribution cone drive mechanism; 6. Switch; 61. Gate; 611. Sealing layer; 62. Gate drive mechanism; 63. Perforated grid plate; 631. Discharge channel; 64. Lifting mechanism; 7. Vibration mechanism. Detailed Implementation

[0017] 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.

[0018] This utility model provides a high-pressure loose material precise water control discharge device, which is used to solve how to reduce the fluctuation range of discharge moisture content, ensure that the fluctuation range of discharge moisture content meets the process requirements, and reduce the edge arching rate to prevent the problem of material jamming at the discharge port 12.

[0019] See Figure 1 and Figure 2 As shown, Figure 1 This is a cross-sectional view of the high-pressure loose material precision water control and discharge device in the embodiment, in the non-discharge state. Figure 2 The figure shows a cross-sectional view of the high-pressure loose material precision water control and discharge device in the unloading state. The high-pressure loose material precision water control and discharge device includes a drying chamber 1, a distribution cone 2, a guide plate 3, a moisture detection mechanism 4, and a distribution cone drive mechanism 5.

[0020] The drying chamber 1 includes a discharge hopper 11. The discharge hopper 11 has a cone-shaped structure with a diameter that gradually decreases from top to bottom, and the bottom end of the discharge hopper 11 has a discharge port 12.

[0021] Both the distribution cone 2 and the guide plate 3 are located inside the discharge hopper 11, and the distribution cone 2, guide plate 3, and discharge hopper 11 are on the same axis. The distribution cone 2 is conical and inclined downwards. An annular material passage 21 is formed between the distribution cone 2 and the inner wall of the discharge hopper 11. The guide plate 3 is conical and spiral-shaped and located below the distribution cone 2. The outer diameter of the guide plate 3 gradually increases from top to bottom, and the guide plate 3 extends downwards and inclined towards the inner wall of the discharge hopper 11.

[0022] Moisture detection mechanism 4 is installed at the discharge port 12 of drying chamber 1 and is used to detect the moisture content of the material in drying chamber 1.

[0023] The material distribution cone drive mechanism 5 is installed inside the discharge hopper 11 and is connected to the material distribution cone 2 via a transmission. The material distribution cone drive mechanism 5 is used to drive the material distribution cone 2 to rotate according to the detection result of the moisture detection mechanism 4.

[0024] When using the high-pressure loose material precision moisture control discharge device described above, the discharge port 12 is closed by default, the distribution cone 2 is stationary by default, and the negative pressure inside the drying chamber 1 is 20Pa. During unloading, the discharge port 12 opens, and simultaneously, the distribution cone drive mechanism 5 drives the distribution cone 2 to rotate at a speed of approximately 3 rpm. The distribution cone 2 and the guide plate 3 work together to push the material at the inner edge of the drying chamber 1 downwards and out through the discharge port 12. During this unloading process, the moisture detection mechanism 4 monitors the moisture content of the discharged material in real time. When the moisture content is >22%, the distribution cone drive mechanism 5 drives the distribution cone 2 to rotate at a speed of approximately 5 rpm, further guiding the high-moisture material to the edge.

[0025] As can be seen from the above usage process, compared with the traditional drying and discharge structure, this utility model has the following advantages: First, this utility model uses the distribution cone 2 and the guide plate 3 located in the center of the discharge hopper 11 to guide the material in the drying chamber 1 to flow from the center to the edge, and then output the material from the edge to the discharge port 12. This prevents the material from flowing directly downward from the center to the discharge port 12, thus avoiding the upper layer of high-moisture material from being discharged from the center in advance. This effectively reduces the range of fluctuation in the discharge moisture content and greatly reduces the edge arching rate, effectively preventing the material from getting stuck at the discharge port 12.

[0026] Secondly, this utility model can detect the moisture content of the material in the drying chamber 1 in real time through the moisture detection mechanism 4. Combined with the distribution cone drive mechanism 5, it can adjust the rotation speed of the distribution cone 2 during unloading according to the material moisture content. When the distribution cone 2 rotates, it can generate centrifugal force. The faster the rotation speed of the distribution cone 2, the greater the centrifugal force, and the more it can drive the material in the drying chamber 1 to flow towards the edge. In this way, the flow state of the material in the discharge hopper 11 can be accurately controlled, thereby achieving precise water control of high-pressure loose materials during the discharge process, solving the coupling contradiction between moisture content stratification and uneven flow, ensuring that the discharge moisture content meets the process requirement of ≤20%±2%, and eliminating the risk of edge arching. It is applicable to sludge drying, biomass fuel preparation and other fields.

[0027] Finally, the conical design of the discharge hopper 11 enables the material in the drying chamber 1 to automatically flow downwards through the discharge port 12 under its own gravity, effectively reducing the unloading energy consumption of this invention.

[0028] The aforementioned moisture detection mechanism 4 can use existing moisture detection instruments such as microwave moisture meters, and is fixed to the bracket 13 inside the drying chamber 1 by means of screwing or welding, enabling real-time detection of moisture content. The aforementioned distributing cone drive mechanism 5 can use existing rotary drive mechanisms such as rotary motors, and is fixedly installed on the guide plate 3 by means of screwing or welding. In this embodiment, the moisture detection mechanism 4 is selected as a microwave moisture meter with a sampling frequency of 10Hz, and the distributing cone drive mechanism 5 is selected as a rotary motor with a rotation speed of 2 to 6 rpm. When the moisture content is 20% ± 2%, the rotation speed of the distributing cone 2 is about 3 rpm; when the moisture content is > 22% or the fluctuation range is > ± 2%, the rotation speed of the distributing cone 2 is increased to about 5 rpm. Thus, by combining the guide plate 3 with the rotating distribution cone 2, this utility model can increase the flow rate of the material at the edge to more than 80% of that in the center area (compared to only 30% to 40% in traditional processes), reduce the standard deviation of moisture content from ±8% to ±1.5%, ensure that the moisture content of the discharged material is stable at ≤20%, and ensure that the moisture content fluctuation range meets the ±2% control target of the process requirements.

[0029] In one embodiment of the drying chamber 1, the distribution cone 2, and the guide plate 3, the distance between the distribution cone 2 and the inner wall of the drying chamber 1 is 5-10 cm. The semi-cone angle at the bottom of the drying chamber 1 is 15°-45°. The semi-cone angle of the distribution cone 2 is 30°-35°. The pitch of the guide plate 3 is 10-15 cm, and the inclination angle is 45°. Thus, this invention can utilize the self-weight of the material inside the chamber (a stack height of 5-15 meters corresponds to a pressure of 50-150 kPa) to drive unloading. By optimizing the cone angle and surface roughness (Ra≤3.2μm), the unloading resistance is reduced by 70%, and energy consumption <0.1 kWh / ton can be achieved without vibration to break the arch.

[0030] See Figure 1 and Figure 2 As shown, based on any of the above embodiments, a switch gate 6 is installed at the discharge port 12 of the discharge hopper 11. The switch gate 6 includes a gate plate 61 and a gate plate driving mechanism 62. The gate plate 61 is slidably connected to the discharge port 12 of the drying chamber 1. The gate plate driving mechanism 62 is installed outside the drying chamber 1 and is drivenly connected to the gate plate 61. The gate plate driving mechanism 62 is used to drive the gate plate 61 to slide towards or away from the discharge port 12 to close or open the discharge port 12. In this way, the switch gate 6, through the cooperation of the gate plate 61 and the gate plate driving mechanism 62, can flexibly control the opening and closing of the discharge port 12, which is convenient for timely prevention of material outflow during non-discharging times such as equipment maintenance and repair, ensuring equipment operation safety and operational convenience.

[0031] The aforementioned gate drive mechanism 62 can use an existing screw motor, whose output end is connected to the gate 61 by screwing or welding. Alternatively, the aforementioned gate 61 can be rotatably connected to the discharge port 12 of the drying chamber 1, and the gate drive mechanism 62 can use an existing rotary motor. The gate drive mechanism 62 and the gate drive mechanism 62 cooperate to close or open the discharge port 12 by rotation.

[0032] Based on the above embodiments, the high-pressure loose material precision water control discharge device also includes a pressure balancing mechanism (not shown in the figure). The pressure balancing mechanism includes a pressure balancing pipe and a negative pressure fan. The negative pressure fan is installed outside the drying chamber 1. One end of the pressure balancing pipe is connected to the drying chamber 1, and the other end is connected to the negative pressure fan. Thus, during unloading, the pressure balancing mechanism, through the cooperation of the negative pressure fan and the pressure balancing pipe, can draw in outside air from the drying chamber 1 and introduce it into the drying chamber 1, thereby relieving pressure. This dynamically adjusts the pressure difference between the inside and outside of the drying chamber 1 to always be ≤50Pa, preventing excessive pressure difference from causing outside air to backflow into the drying chamber 1 from the discharge port 12, disrupting the negative pressure environment inside the drying chamber 1, and effectively reducing the risk of odor escape. In this embodiment, the diameter of the pressure balancing pipe is 5cm.

[0033] Based on the above embodiments, the high-pressure loose material precision moisture control discharge device may further include a pressure sensor and a PLC controller (not shown in the figure). The pressure sensor is used to monitor the pressure value inside the drying chamber 1 in real time. The PLC controller is electrically connected to the pressure sensor and the pressure balancing mechanism. In this way, the PLC controller can control the pressure balancing mechanism to dynamically adjust the pressure inside the drying chamber 1 according to the monitoring results of the pressure sensor, thereby dynamically adjusting the pressure difference between the inside and outside of the drying chamber 1. The PLC controller may also be electrically connected to the aforementioned switch 6, the material distribution cone drive mechanism 5, and the moisture detection mechanism 4 to control the rotation speed of the material distribution cone 2 and the opening and closing of the discharge port 12.

[0034] See Figure 1 and Figure 2As shown, based on the above embodiment of the switch gate 6, the switch gate 6 further includes a perforated grid plate 63 and a lifting mechanism 64. The perforated grid plate 63 is located between the guide plate 3 and the gate plate 61 within the discharge hopper 11. The perforated grid plate 63 is conical in shape and tilts downwards. The lifting mechanism 64 is fixed within the drying chamber 1 by means of screws or welding, and is connected to the perforated grid plate 63 in a transmission manner. The lifting mechanism 64 is used to drive the perforated grid plate 63 to move up and down between a first position and a second position. In the first position, the outer edge of the perforated grid plate 63 abuts against the inner wall of the discharge hopper 11; in the second position, an annular discharge channel 631 is formed between the perforated grid plate 63 and the inner wall of the discharge hopper 11. Thus, during unloading, the gate drive mechanism 62 and the gate 61 cooperate to open the discharge port 12, while the lifting mechanism 64 drives the porous grid plate 63 to rise from the first position to the second position, allowing the material in the drying chamber 1 to be discharged from the discharge port 12 through the discharge channel 631. During non-unloading time, the gate drive mechanism 62 and the gate 61 cooperate to close the discharge port 12, and the porous grid plate 63 abuts against the inner wall of the discharge hopper 11, which can prevent most of the material from accumulating at the discharge port 12, greatly reducing the risk of the material accumulating at the discharge port 12 hardening due to the large pressure, thereby further preventing the discharge port 12 from being blocked. In addition, the porous grid plate 63 can also maintain micro-permeability through its porous design, avoiding the failure of the negative pressure in the drying chamber 1, thereby further reducing the risk of odor emission.

[0035] The aforementioned lifting mechanism 64 can use a linear drive mechanism such as a linear motor, and is fixed to the support 13 inside the drying chamber 1 by means of screwing or welding. The output end of the lifting mechanism 64 is connected to the porous grid plate 63 by means of screwing or welding. In this embodiment, the lifting mechanism 64 uses a low-power linear motor (≤0.5kW) with an opening accuracy of ±1mm. The porous grid plate 63 has a hole diameter of 2cm and an air flow rate of 0.1~0.3m³ / min. The porous grid plate 63, in conjunction with the air pressure balance mechanism, can reduce the odor leakage rate to below 5mg / m³.

[0036] See Figure 1 and Figure 2 As shown, based on the above embodiment, the porous grid plate 63 is fixed to the bottom of the guide plate 3 by means of screwing or welding. When the porous grid plate 63 is in the first position, the bottom end of the guide plate 3 and the outer edge of the porous grid plate 63 are both in contact with the inner wall of the discharge hopper 11. Thus, during non-discharging times, the bottom end of the guide plate 3 abuts against the inner wall of the discharge hopper 11, which expands the guiding range of the guide plate 3 for the material in the discharge hopper 11, thereby improving the guiding effect of edge materials and further reducing the edge arching rate; while during discharging, the guide plate 3 can rise with the porous grid plate 63, moving away from the inner wall of the discharge hopper 11, so that the material can be smoothly discharged from the discharge port 12.

[0037] See Figure 1 and Figure 2 As shown, in one embodiment of the gate 61, two gates 61 are symmetrically arranged, and a sealing layer 611 is adhered to the opposite sides of each gate 61. A gate drive mechanism 62 is connected to the two gates 61 and is used to drive the two gates 61 to move away from or towards each other to close or close the discharge port 12. Thus, during non-discharging times, the two gates 61 are sealed together by the sealing layer 611, improving the sealing performance of the discharge port 12 when closed, effectively preventing material leakage, and improving the sealing performance of the drying chamber 1 during non-discharging times, allowing the drying chamber 1 to maintain a negative pressure state. Simultaneously, the movement of the two gates 61 towards or away from each other makes the opening and closing operation of the discharge port 12 more flexible and reliable.

[0038] The aforementioned sealing layer 611 can be made of sealing materials such as fluororubber. The aforementioned gate drive mechanism 62 can use two screw motors, which are respectively fixedly connected to the two gates 61, or the gate drive mechanism 62 can use a bidirectional screw motor, which is fixedly connected to the two gates 61.

[0039] See Figure 1 and Figure 2 As shown, based on any of the above embodiments, the high-pressure loose material precision water control discharge device also includes a vibration mechanism 7. The vibration mechanism 7 is installed on the bottom surface of the guide plate 3 and is used to vibrate the guide plate 3. Thus, when the height difference between the edge material level and the center material level is >10cm, the vibration mechanism 7 is activated, vibrating the guide plate 3, which can further improve the guiding effect of the guide plate 3, promote the flow of material at the edge, further reduce the edge arching rate, thereby further preventing material jamming at the discharge port 12, and also preventing material from accumulating and arching on the guide plate 3, ensuring that the material can flow smoothly along the guide plate 3 to the edge, and improving the discharge efficiency.

[0040] In this embodiment, the vibration mechanism 7 is made of piezoelectric ceramic sheet, which can achieve micro-amplitude vibration with an amplitude of 1-2 mm and a frequency of 10-20 Hz, and low energy consumption.

[0041] Based on the above embodiments, the high-pressure loose material precision water control discharge device may further include a material level sensor (not shown in the figure). The material level sensor can use an existing electronic rangefinder to monitor the edge and center material levels within the drying chamber 1 in real time. The material level sensor and the vibration mechanism 7 can be electrically connected to the aforementioned PLC controller. The PLC controller can calculate the height difference between the edge and center material levels within the drying chamber 1 and control the opening and closing of the vibration mechanism 7 based on the height difference, resulting in a high degree of automation and energy savings.

[0042] 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 precise water control and discharge of high-pressure loose materials, characterized in that, include: The drying chamber includes a discharge hopper, which has a cone-shaped structure with a diameter that gradually decreases from top to bottom, and a discharge port is provided at the bottom end of the discharge hopper; A material distribution cone and a guide plate are coaxially disposed inside the discharge hopper. The material distribution cone is conical and inclined downwards. An annular material passage is formed between the material distribution cone and the inner wall of the discharge hopper. The guide plate is arranged in a conical spiral shape below the material distribution cone. The outer diameter of the guide plate gradually increases from top to bottom, and the guide plate extends downwards and inclined towards the inner wall of the discharge hopper. A moisture detection mechanism is installed at the outlet of the drying chamber and is used to detect the moisture content of the material in the drying chamber. The material distribution cone drive mechanism is located inside the discharge hopper and is connected to the material distribution cone via a transmission. The material distribution cone drive mechanism is used to drive the material distribution cone to rotate according to the detection result of the moisture detection mechanism.

2. The high-pressure loose material precision water control and discharge device according to claim 1, characterized in that, A switch gate is provided at the discharge port of the discharge hopper. The switch gate includes a gate plate and a gate plate driving mechanism. The gate plate is slidably disposed at the discharge port of the drying chamber. The gate plate driving mechanism is installed outside the drying chamber and is connected to the gate plate in a transmission manner. The gate plate driving mechanism is used to drive the gate plate to slide towards or away from the discharge port to close or open the discharge port.

3. The high-pressure loose material precision water control and discharge device according to claim 2, characterized in that, The high-pressure loose material precision water control and discharge device also includes a pressure balancing mechanism, which includes a pressure balancing pipe and a negative pressure fan. The negative pressure fan is installed outside the drying chamber. One end of the pressure balancing pipe is connected to the drying chamber, and the other end is connected to the negative pressure fan.

4. The high-pressure loose material precision water control and discharge device according to claim 2 or 3, characterized in that, The switch also includes: A porous grid plate is disposed inside the discharge hopper and located between the guide plate and the gate plate. The porous grid plate is conical in shape and tilts downward. A lifting mechanism is fixedly installed inside the drying chamber and is connected to the porous grid plate in a transmission manner. The lifting mechanism is used to drive the porous grid plate to move up and down between a first position and a second position. When the porous grid plate is in the first position, the outer edge of the porous grid plate abuts against the inner wall of the discharge hopper; when the porous grid plate is in the second position, an annular discharge channel is formed between the porous grid plate and the inner wall of the discharge hopper.

5. The high-pressure loose material precision water control and discharge device according to claim 4, characterized in that, The porous grid plate is fixed below the guide plate, and when the porous grid plate is in the first position, the bottom end of the guide plate and the outer edge of the porous grid plate are both in contact with the inner wall of the discharge hopper.

6. The high-pressure loose material precision water control and discharge device according to any one of claims 2, 3 and 5, characterized in that, Two gates are symmetrically arranged, and a sealing layer is provided on the opposite side of each gate. The gate driving mechanism is connected to the two gates and is used to drive the two gates away from each other or closer to each other to close or close the discharge port.

7. The high-pressure loose material precision water control and discharge device according to any one of claims 1, 2, 3 and 5, characterized in that, The high-pressure loose material precision water control and discharge device also includes a vibration mechanism, which is located on the bottom surface of the guide plate and is used to vibrate the guide plate.

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