A high pressure dewaterer

Abstract

The utility model discloses a high pressure dewatering machine relates to livestock manure processing technical field, include: frame, separation bin, feeding device, discharge device, drainage device, hydraulic station and electric control cabinet, separation bin is installed above frame, and one side of separation bin is provided with high accuracy stroke monitoring device, and separation bin is divided into extrusion bin, feed bin and power bin from left to right along the axis in proper order, and the inside of power bin is provided with hydraulic reciprocating type material blocking cylinder, and the top of feed bin is fixedly connected with feeding device, and the front end of extrusion bin is fixedly connected with discharge device, and the bottom of extrusion bin is provided with screen, and drainage device sets up below frame close to feed bin and extrusion bin, and hydraulic station sets up below frame close to power bin, and electric control cabinet sets up one side close to power bin of frame, the utility model provides a kind of high pressure dewatering machine, realizes efficient dewatering, protects coarse fiber, the target of scale processing and low operating cost, provides technical support for resource utilization of cow dung.

Description

Technical Field

[0001] This utility model relates to the field of livestock manure treatment technology, specifically a high-pressure dehydrator. Background Technology

[0002] With the rapid development of my country's dairy farming industry, the amount of dairy cow manure produced has been increasing year by year. Statistics show that an adult dairy cow produces an average of 30-50 kilograms of manure per day, and large-scale farms can generate thousands of tons of manure annually. Untreated dairy cow manure not only occupies a large amount of land resources but also produces foul odors, breeds mosquitoes and flies, and even pollutes soil and water bodies, posing a serious threat to the ecological environment. Therefore, the efficient treatment of dairy cow manure has become an important issue for the sustainable development of the dairy farming industry.

[0003] The main existing treatment methods for dairy cow manure include fertilizer production, bedding reuse, and biogas fermentation. Among these, bedding reuse has become the mainstream approach due to its high resource utilization rate and significant economic benefits. However, this method requires dehydration of the dairy cow manure: the moisture content of the dehydrated manure must be reduced to below 60% to meet the conditions for aerobic fermentation; at the same time, the dehydrated manure must retain a certain amount of crude fiber to maintain the water absorption and aeration properties of the bedding. Therefore, the key to dairy cow manure dehydration is to reduce the moisture content while protecting the crude fiber from damage.

[0004] Commonly used dairy manure dewatering equipment includes screw extruders and high-pressure belt filter presses, but both have significant drawbacks. While screw extruders have a simple structure and can reduce the moisture content to below 60% after dewatering, meeting the basic requirements for fertilizer production and bedding reuse, the strong shearing force applied to the manure during extrusion causes coarse fibers to break, affecting bedding reuse efficiency. Furthermore, screw extruders have limited processing capacity, making them unsuitable for large-scale farms, and the screw shaft is easily affected by impurities in the manure (such as stones and metal), leading to wear or jamming and high maintenance costs. High-pressure belt filter presses can reduce the moisture content to below 50% after dewatering and cause less damage to coarse fibers, making them suitable for bedding reuse. However, their complex structure, large footprint, and difficult installation and maintenance make them less economical. Additionally, the filter belt is prone to wear and requires regular replacement, resulting in high operating costs, and the high-pressure drive system consumes a significant amount of electricity.

[0005] In summary, existing dewatering equipment for dairy cow manure treatment suffers from several problems, including a trade-off between protecting coarse fibers and achieving high dewatering efficiency, insufficient large-scale processing capacity, and a difficulty in balancing economic efficiency and reliability. Currently, the market lacks a dairy cow manure dewatering device that can efficiently dewater and protect coarse fibers while also possessing high reliability and low operating costs. Therefore, there is an urgent need to develop a high-pressure dewatering machine to solve these problems and further promote the resource utilization of dairy cow manure. Utility Model Content

[0006] In view of this, the present invention provides a high-pressure dewatering machine, which aims to achieve the goals of efficient dewatering, protection of crude fibers, large-scale processing, and low operating costs, and provides technical support for the resource utilization of dairy cow manure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-pressure dehydrator includes: a frame, a separation chamber, a feeding device, a discharging device, a drainage device, a hydraulic station, and an electrical control cabinet. The separation chamber is installed above the frame, and a high-precision stroke monitoring device is installed on one side of the separation chamber. The separation chamber is divided into a squeezing chamber, a feeding chamber, and a power chamber from left to right along the axis. A hydraulic reciprocating baffle is installed inside the power chamber. The feeding device is fixedly connected to the top of the feeding chamber. The discharging device is fixedly connected to the front end of the squeezing chamber. A screen is installed at the bottom of the squeezing chamber. The drainage device is located below the frame near the feeding chamber and the squeezing chamber. The hydraulic station is located below the frame near the power chamber. The electrical control cabinet is located on the side of the frame near the power chamber. The hydraulic station is electrically connected to the electrical control cabinet, and the electrical control cabinet is also signal-connected to the high-precision stroke monitoring device.

[0009] Furthermore, the feeding device includes a feeding hopper and a rotary paddle level switch. The feeding hopper is fixedly connected to the top of the feeding bin, and a rotary paddle level switch is provided on one side of the feeding hopper.

[0010] Furthermore, the rotary paddle level switch includes a lower level switch and an upper level switch, both of which are installed on one side of the feed hopper and are communicatively connected to the electrical control cabinet.

[0011] Furthermore, the discharge device includes a reinforcing baffle, a hydraulic gate valve, a gate valve cylinder, a sealed transition chamber, a gate valve proximity switch, and a discharge port. One end of the reinforcing baffle is fixedly connected to the extrusion chamber, and the other end is fixedly connected to the discharge port. A hydraulic gate valve is installed inside the reinforcing baffle. The gate valve cylinder drives the hydraulic gate valve to move. A gate valve proximity switch is installed on the top of the hydraulic gate valve. The gate valve proximity switch includes an upper gate valve proximity switch and a lower gate valve proximity switch. Both the upper and lower gate valve proximity switches are communicatively connected to the electrical control cabinet. A sealed transition chamber is connected to the bottom of the reinforcing baffle.

[0012] Furthermore, the drainage device adopts a conical water collection hopper structure.

[0013] Furthermore, the hydraulic station includes a first hydraulic pump group, a second hydraulic pump group, and a hydraulic connector. The first hydraulic pump group is connected to the hydraulic reciprocating baffle cylinder through the hydraulic connector, and the second hydraulic pump group is connected to the gate valve cylinder of the discharge device through the hydraulic connector.

[0014] Furthermore, the hydraulic reciprocating baffle cylinder includes a baffle cylinder body, an extrusion head body, and an extrusion cylinder. The baffle cylinder body is slidably connected to the inner wall of the power chamber. The extrusion head body is located at the front end of the baffle cylinder body. The extrusion cylinder is fixed inside the power chamber and drives the baffle cylinder body to move.

[0015] Furthermore, the high-precision stroke monitoring device includes a reset detection proximity switch, an intermittent extrusion control switch group, and a discharge position proximity switch. The reset detection proximity switch is installed at the rear of the power chamber, the intermittent extrusion control switch group is installed in the middle of the power chamber, and the discharge position proximity switch is installed at the connection between the power chamber and the feed chamber. The intermittent extrusion control switch group includes multiple high-precision proximity switches. The reset detection proximity switch, the intermittent extrusion control switch group, and the discharge position proximity switch are all communicatively connected to the electrical control cabinet.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) Universal material handling and precise moisture content control

[0018] This invention utilizes intermittent extrusion and hydraulic output drive, combined with a staged pressure-holding design, to efficiently process materials with varying initial moisture contents, especially high-moisture materials. Based on a high-precision proximity switch and control system, the equipment can flexibly adjust the extrusion stroke and holding time according to material characteristics, achieving precise control of the output moisture content. For high-moisture materials, the extrusion stroke and holding time are extended to fully remove moisture; for low-moisture materials, the extrusion stroke and holding time are shortened to avoid over-extrusion. This adaptive control method enables the equipment to stably process diverse materials, achieving output moisture contents that meet different process requirements, while significantly improving solid-phase recovery rate.

[0019] (2) No shear damage and protection of fiber integrity

[0020] This invention adopts a hydraulic reciprocating baffle design, which completely avoids the shearing damage to materials caused by traditional screw extruders. The shearing force is reduced by more than 80%, which can effectively retain the coarse fiber components in organic materials such as cow dung, ensuring the reuse effect of bedding material. At the same time, it avoids the damage to the material structure and improves the utilization value of the dehydrated material.

[0021] (3) High-pressure hydraulic drive and precision process control

[0022] This invention employs hydraulic drive, with a working pressure range of 20-25 MPa, significantly higher than traditional screw extruders and high-pressure belt presses. The hydraulic drive features wide-range adjustment and high-precision control, enabling real-time optimization of extrusion parameters based on material characteristics. Through the control system and high-precision proximity switches, the equipment achieves high-precision position control and process parameter adjustment, with a response speed 10 times faster than manual operation, ensuring consistent and stable dewatering results.

[0023] (4) Compact modular design and low-cost operation

[0024] This utility model adopts a modular functional partition design, which rationally arranges the power chamber, feeding chamber, and extrusion chamber, replacing the complex roller system structure of traditional high-pressure belt conveyors, reducing the floor space by 40% to 50%. At the same time, the equipment does not require filter belt replacement, reducing annual maintenance costs by about 50%. The modular discharge port design supports switching between direct discharge and bottom discharge modes, further reducing equipment installation and operation costs and adapting to the needs of different application scenarios.

[0025] (5) Low maintenance requirements and long service life

[0026] This invention, through modular design and intermittent extrusion mode, significantly reduces the probability of material blockage and extends maintenance intervals by 2-3 times. The hydraulic station achieves an efficiency of over 85%, saving 15-20% in energy and reducing wear and energy consumption during equipment operation. The intelligent control system optimizes process parameters in real time, further reducing the frequency of manual intervention and maintenance difficulty, and significantly extending the equipment's service life. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a front view of the present invention;

[0030] Figure 3 This is a perspective view of the present invention;

[0031] In the figure:

[0032] 1-Frame; 2-Separation chamber; 3-Feeding device; 4-Discharge device; 5-Drainage device; 6-Hydraulic station; 7-Electrical control cabinet; 8-Extrusion chamber; 9-Feeding chamber; 10-Power chamber; 11-Feeding hopper; 12-Upper material level switch; 13-Lower material level switch; 14-Reinforced baffle; 15-Hydraulic gate valve; 16-Sealed transition chamber; 17-Discharge port; 18-Upper gate valve proximity switch; 19-Lower gate valve proximity switch; 20-Reset detection proximity switch; 21-Intermittent extrusion control switch group; 22-Discharge position proximity switch; 23-Baffle cylinder; 24-Extrusion head body; 25-Hydraulic connector. Detailed Implementation

[0033] 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.

[0034] Please see the appendix Figure 1-3 This utility model provides a high-pressure dehydrator, including: a frame 1, a separation chamber 2, a feeding device 3, a discharging device 4, a drainage device 5, a hydraulic station 6, and an electrical control cabinet 7. The separation chamber 2 is installed above the frame 1. A high-precision stroke monitoring device is provided on one side of the separation chamber 2. The separation chamber 2 is divided into a compression chamber 8, a feeding chamber 9, and a power chamber 10 along the axis from left to right. A hydraulic reciprocating baffle cylinder is provided inside the power chamber 10. The feeding device 3 is fixedly connected to the top of the feeding chamber 9. The discharging device 4 is fixedly connected to the front end of the compression chamber 8. A screen is provided at the bottom of the compression chamber 8. The drainage device 5 is located on the frame 1 below the feeding chamber 9 and the compression chamber 8. The hydraulic station 6 is located on the frame 1 below the power chamber 10. The electrical control cabinet 7 is located on the side of the frame 1 near the power chamber 10. The hydraulic station 6 is electrically connected to the electrical control cabinet 7, which is also connected to the high-precision stroke monitoring device. The separation chamber 2 adopts a cylindrical structure design, with the power chamber 10 at the rear. It can precisely control the pushing speed, holding time, and reset action of the hydraulic reciprocating baffle according to the dewatering process requirements, ensuring the stability and controllability of the dewatering process. The middle part is the feeding chamber 9, with a radial guide channel structure at the bottom, which is responsible for receiving and temporarily storing materials and quickly discharging the liquid phase. At the same time, it monitors the full state of the feeding chamber and the storage volume of the feeding hopper to ensure the continuity and stability of the material supply. The front end is the extrusion chamber 8, which is responsible for the solid-liquid separation of materials, discharge, and collection and guidance of the separated liquid, ensuring the process integrity and operational reliability of the dewatering process.

[0035] The integrated design of the hydraulic reciprocating baffle effectively avoids the shearing damage to materials caused by the screw extruder, reducing shearing force by more than 80%. This effectively retains the coarse fibers in cow manure, ensuring the effectiveness of bedding reuse. Simultaneously, this solution solves the problem of filter belt wear in high-pressure belt presses, enabling the processing of materials with diverse moisture contents without the need for filter belt replacement, reducing annual maintenance costs by approximately 50%. Through intermittent extrusion and staged pressure holding, the internal moisture migration time of the material is extended by 30%–50%, ultimately increasing the dehydration rate by 15%–25%.

[0036] Preferably, the feeding device 3 includes a feeding hopper 11 and a rotary paddle level switch. The feeding hopper 11 is fixedly connected to the top of the feeding bin 9. A rotary paddle level switch is provided on one side of the feeding hopper 11, which can realize smooth material supply, accurate material level monitoring and automatic control. A dual material level monitoring design is adopted, with two vertically installed linear rotary paddle level switches.

[0037] Preferably, the rotary paddle level switch includes a lower level switch 13 and an upper level switch 12. Both the lower level switch 13 and the upper level switch 12 are installed on one side of the feed hopper 11. Both the lower level switch 13 and the upper level switch 12 are communicatively connected to the electrical control cabinet 7. The lower level switch 13 serves as a full hopper signal detection point to indicate that the feed hopper has reached its rated processing capacity. The upper level switch 12 serves as a full hopper signal detection point to warn that the feed hopper has reached its maximum storage capacity.

[0038] Preferably, the discharge device 4 includes a reinforcing baffle 14, a hydraulic gate valve 15, a gate valve cylinder, a sealed transition chamber 16, a gate valve proximity switch, and a discharge port 17. One end of the reinforcing baffle 14 is fixedly connected to the extrusion chamber 8, and the other end is fixedly connected to the discharge port 17. The hydraulic gate valve 15 is installed inside the reinforcing baffle 14. The gate valve cylinder drives the hydraulic gate valve 15 to move. A gate valve proximity switch is installed on the top of the hydraulic gate valve 15. The gate valve proximity switch includes an upper gate valve proximity switch. Switch 18 and lower gate valve proximity switch 19 are both communicatively connected to the electrical control cabinet 7. A sealed transition chamber 16 is connected to the bottom of the reinforced baffle 14. This device acts as an axial pressure bearing mechanism during material dewatering, providing reverse support to the extrusion chamber 8 and ensuring stable dewatering of the material under high pressure. During the discharge stage, precise control of the hydraulic gate valve 15 and real-time monitoring by the gate valve proximity switches ensure orderly discharge of the dewatered material. The discharge port 17 adopts a modular design, allowing for either bottom discharge or direct discharge modes depending on process requirements: the bottom discharge mode is equipped with a guide chute for directional material collection; the direct discharge mode simplifies the structure and improves discharge efficiency. The sealed transition chamber 16 collects leaked material, provides operating space for the hydraulic gate valve 15, and prevents material accumulation, ensuring system pressure stability and process integrity.

[0039] High-precision proximity switches and a control system enable precise control of the discharge moisture content, ensuring discharge stability and process consistency. Modular design reduces equipment complexity and maintenance costs while improving the flexibility and precision of discharge control. The coordinated operation of the discharge device 4 achieves precise discharge. The combination of the modular discharge port 17 design and the intelligent control system enables precise control and efficient operation of the discharge process, significantly improving the equipment's applicability and economy. The coordinated control of the hydraulic gate valve 15 and the hydraulic reciprocating baffle ensures the accuracy and continuity of the discharge process, further enhancing equipment operating efficiency and process stability.

[0040] Preferably, the drainage device 5 adopts a conical water collection bucket structure, which consists of a large-diameter water receiving bucket, a splash guard, and a quick-release drainage interface, to realize the collection, diversion, and discharge of the separated liquid.

[0041] Preferably, the hydraulic station 6 includes a first hydraulic pump group, a second hydraulic pump group, and a hydraulic connector 25. The first hydraulic pump group is connected to the hydraulic reciprocating baffle cylinder through the hydraulic connector 25, and the second hydraulic pump group is connected to the gate valve cylinder of the discharge device 4 through the hydraulic connector 25. It can provide independent hydraulic power output for the extrusion cylinder and the gate valve cylinder, realize multi-stage pressure regulation, speed control, position holding and precise opening and closing control of the discharge port during the material dewatering process, ensure the coordinated operation of the dewatering process and the stability of the system operation. The hydraulic station 6 has an efficiency of over 85%, saves energy of 15% to 20%, and significantly improves the economy and sustainability of the equipment.

[0042] Preferably, the electrical control cabinet consists of a main controller, a human-machine interface, electrical components, a signal processing module, and safety protection devices. It can centrally control the operation of the entire dewatering system, including the start-up and shutdown of the hydraulic station 6 and parameter adjustment, the action control of each actuator, the acquisition and processing of sensor signals, and the monitoring and protection of the system's operating status, thereby realizing the automated operation of the equipment and the precise control of process parameters.

[0043] Preferably, the hydraulic reciprocating baffle cylinder includes a baffle cylinder body 23, an extrusion head body 24, and an extrusion cylinder. The baffle cylinder body 23 is slidably connected to the inner wall of the power chamber 10. The extrusion head body 24 is located at the front end of the baffle cylinder body 23. The extrusion cylinder is fixed inside the power chamber 10. The extrusion cylinder drives the baffle cylinder body 23 to move, achieving process coupling of material blocking and dewatering through precise axial movement. During the dewatering stage, the baffle cylinder body 23 moves forward to naturally close the feed inlet, while applying extrusion pressure to complete dewatering. During the resetting stage, the baffle cylinder body 23 moves backward to achieve quantitative feeding, establishing material conditions for subsequent dewatering cycles. The hydraulic reciprocating baffle cylinder is made of high-strength materials to ensure its stability and durability under high-pressure environments. The intermittent extrusion mode reduces wear and malfunctions during equipment operation by optimizing the working cycle of the hydraulic system. The shear-free design of the hydraulic reciprocating baffle cylinder avoids the shearing damage to materials caused by traditional technologies, effectively protecting the coarse fibers in cow dung and ensuring the reuse effect of bedding material.

[0044] Traditional high-pressure belt presses suffer from filter belt wear, while screw extruders are prone to clogging and wear. This invention exhibits a significantly lower failure rate than traditional equipment. Through a hydraulic reciprocating baffle design and an intermittent extrusion mode, this invention simplifies the equipment structure, significantly reducing mechanical wear and failure rates during operation, and improving the overall reliability and service life of the equipment. It avoids the filter belt wear problems of traditional high-pressure belt presses and the clogging and wear issues of screw extruders.

[0045] In terms of dewatering efficiency, an intermittent extrusion process and hydraulic output system are adopted, with a working pressure range of 20-25 MPa, which is a significant improvement compared to the 0.5-3 MPa of traditional screw extruders and the 3-8 MPa of high-pressure belt presses, breaking through the pressure range limitations of traditional equipment. Combined with a staged pressure holding design, the internal moisture migration time of the material is extended by 30%-50%, and the final dewatering rate is increased by 15%-25%, making it particularly suitable for materials with high moisture content. Through the optimized design of the intermittent extrusion control switch group 21, high-precision dewatering control for materials with different initial moisture contents is achieved. Specifically, multiple high-precision proximity switches arranged along the movement trajectory of the hydraulic reciprocating baffle can be flexibly adjusted according to the material characteristics, thereby accurately controlling the extrusion stroke and holding time. For materials with high moisture content, the extrusion stroke and holding time can be increased to promote sufficient moisture migration and discharge; for materials with low moisture content, the extrusion stroke and holding time can be shortened to avoid energy waste and equipment damage caused by excessive extrusion. This material-characteristic-based adaptive control method enables the equipment to handle materials with diverse moisture contents, ensuring a stable and controllable output moisture content to meet the dehydration requirements of various process scenarios. Simultaneously, the control system automatically optimizes extrusion parameters based on real-time feedback of material characteristic data, ensuring consistent dehydration results and process stability. The equipment can also handle materials with diverse moisture contents, maintaining a stable and controllable output moisture content to meet the dehydration needs of different process scenarios.

[0046] Preferably, the high-precision stroke monitoring device includes a reset detection proximity switch 20, an intermittent extrusion control switch group 21, and a discharge position proximity switch 22. The reset detection proximity switch 20 is installed at the tail of the power chamber 10, the intermittent extrusion control switch group 21 is installed in the middle of the power chamber 10, and the discharge position proximity switch 22 is installed at the connection between the power chamber 10 and the feed chamber 9. The intermittent extrusion control switch group 21 includes multiple high-precision proximity switches. The reset detection proximity switch 20, the intermittent extrusion control switch group 21, and the discharge position proximity switch 22 are all communicatively connected to the electrical control cabinet 7 to monitor the movement position and material status of the hydraulic reciprocating baffle in real time, ensuring precise control of the extrusion stroke and holding time, and realizing precise monitoring of the stroke of the hydraulic reciprocating baffle and optimized control of the dewatering process. The reset detection proximity switch 20 is used to accurately position the initial position of the hydraulic reciprocating baffle cylinder. The intermittent extrusion control switch group 2 performs multi-point position detection on the stroke of the hydraulic reciprocating baffle cylinder. The multi-point detection design realizes precise segmented control of the stroke of the hydraulic reciprocating baffle cylinder, enabling the extrusion process to operate in an intermittent mode. When the hydraulic reciprocating baffle cylinder reaches the preset position, the system will pause operation and maintain pressure. By extending the duration of the material under high pressure, it promotes the full separation and discharge of free water. The intermittent operation mode has the following significant advantages compared with continuous operation: on the one hand, the appropriate holding time is conducive to the full migration and seepage of water inside the material; on the other hand, segmented drainage can avoid the poor water discharge caused by one-time extrusion, thereby improving the overall dewatering efficiency. The precise position control of the high-precision proximity switch ensures the accuracy of each holding pressure interval, making the dewatering process more controllable and efficient. The discharge position proximity switch 22 serves as a precise positioning device for the discharge position, used to control the timing of material discharge after dewatering and ensure the integrity of the discharge process.

[0047] Feeding and initial propulsion stage: The material is conveyed to the feeding hopper 11 by the conveying equipment. When the material reaches the detection position of the lower material level switch 13 on the feeding hopper 11, the control system in the electrical control cabinet 7 starts the hydraulic reciprocating baffle to make it enter the initial propulsion stage.

[0048] Main propulsion phase: When the hydraulic reciprocating baffle reaches the detection position of the first proximity switch, the system enters the main propulsion phase. The system begins to perform intermittent extrusion dehydration operation, and its baffle body 23 gradually closes the discharge port of the feed hopper 11, realizing a gradual interruption of the feeding process. When the hydraulic reciprocating baffle moves from the detection position of the first proximity switch of the intermittent extrusion control switch group 21 to the detection position of the second proximity switch, the hydraulic reciprocating baffle pauses its propulsion and maintains the current pressure for 10 seconds. After 10 seconds, the hydraulic reciprocating baffle continues to propel axially. When it moves from the detection position of the second proximity switch of the intermittent extrusion control switch group 21 to the detection position of the third proximity switch, the hydraulic reciprocating baffle pauses its propulsion again and maintains the current pressure for 10 seconds. This continues until the hydraulic reciprocating baffle reaches the detection position of the last proximity switch of the intermittent extrusion control switch group 21, at which point the main propulsion phase ends.

[0049] Feeding Interruption and Waiting State: During the intermittent extrusion dewatering process, the hydraulic reciprocating baffle cylinder advances axially, and the baffle cylinder body 23 gradually closes the feed hopper 11 discharge port, realizing a gradual interruption of the feeding process. When the material accumulation in the feed hopper 11 reaches the detection position of the upper material level switch 12, the control system in the electrical control cabinet 7 immediately sends a stop command to the conveying equipment to terminate the material conveying. The conveying equipment enters the waiting state, waiting for the current dewatering cycle to be completed before restarting feeding.

[0050] Discharge Stage: When the hydraulic reciprocating baffle cylinder reaches the detection position of the last proximity switch in the intermittent extrusion control switch group 21, the system enters the discharge stage. The discharge device 4 receives a control signal, and the hydraulic gate valve 15 gradually rises from its initial closed state. When the hydraulic gate valve 15 moves to the detection position of the gate valve proximity switch, the gate valve reaches the fully open state. At this time, the hydraulic reciprocating baffle cylinder continues to advance axially. When the end of the hydraulic reciprocating baffle cylinder moves to the detection position of the discharge position proximity switch 22, the discharge stage ends.

[0051] Reset Phase: After the discharge phase ends, the reset phase begins. The hydraulic reciprocating baffle cylinder retracts, and simultaneously, the discharge device 4 receives a closing command, causing the hydraulic gate valve 15 to close from its fully open state. When the hydraulic gate valve 15 moves to the detection position of the lower gate valve proximity switch 19, the gate valve closes completely, restoring its initial closed state. The hydraulic reciprocating baffle cylinder continues to retract, and the baffle cylinder body 23 gradually opens the discharge port of the feed hopper 11, moving to the detection position of the reset detection proximity switch 20. At this point, the hydraulic reciprocating baffle cylinder stops running, thus completing the entire cycle. Subsequently, the control system of the electrical control cabinet 7 sends a start signal to the conveying equipment to restart feeding, and the system enters the next working cycle.

[0052] This complete dehydration cycle achieves coordinated operation of all actuators through precise sequence control and position detection. The intermittent extrusion control switch group 21, the discharge position proximity switch 22, the gate valve proximity switch, and the reset detection proximity switch 20 together constitute the system's position detection network, ensuring accurate execution of each process step. The pressure and flow parameters of the hydraulic station 6 are adjusted in real time according to process requirements, ensuring smooth operation and process reliability.

[0053] The specific method of using this utility model is as follows:

[0054] Material is conveyed into the feed hopper 11 via a conveying device. When the material reaches the detection position of the lower level switch 13 on the feed hopper 11, the control system in the electrical control cabinet 7 activates the hydraulic reciprocating baffle to initiate the initial propulsion stage. When the material accumulation in the feed hopper 11 reaches the detection position of the upper level switch 12, the control system in the electrical control cabinet 7 immediately sends a stop command to the conveying device, terminating material conveying. The conveying device enters a waiting state, awaiting the completion of the current dewatering cycle before restarting feeding. During the initial propulsion stage, the hydraulic reciprocating baffle advances axially. When the hydraulic reciprocating baffle reaches the detection position of the first proximity switch in the intermittent extrusion control switch group 21, the main propulsion stage begins, and the system starts executing intermittent extrusion dewatering operations. The baffle body 23 gradually closes the discharge port of the feed hopper 11, achieving a gradual interruption of the feeding process. During the main propulsion phase, when the hydraulic reciprocating baffle moves from the detection position of the first proximity switch of the intermittent extrusion control switch group 21 to the detection position of the second proximity switch, the hydraulic reciprocating baffle pauses its propulsion and maintains the current pressure for 10 seconds. After 10 seconds, the hydraulic reciprocating baffle continues to propel axially. When it moves from the detection position of the second proximity switch of the intermittent extrusion control switch group 21 to the detection position of the third proximity switch, the hydraulic reciprocating baffle pauses its propulsion again and maintains the current pressure for 10 seconds. This process continues until the hydraulic reciprocating baffle reaches the detection position of the last proximity switch of the intermittent extrusion control switch group 21. At this point, the main propulsion phase ends, and the material discharge phase begins. The hydraulic reciprocating baffle stops advancing and waits for the hydraulic gate valve 15 to fully open. During the discharge phase, the discharge device 4 receives a control signal, and the hydraulic gate valve 15 gradually rises from its initial closed state. When the hydraulic gate valve 15 moves to the detection position of the gate valve proximity switch, the gate valve reaches the fully open state. At this time, the hydraulic reciprocating baffle continues to advance axially. When the end of the hydraulic reciprocating baffle moves to the detection position of the discharge position proximity switch 22, the discharge phase ends. After the discharge phase ends, the reset phase begins. The hydraulic reciprocating baffle begins to retract, and the discharge device 4 receives a closing command, causing the hydraulic gate valve 15 to close from its fully open state. When the hydraulic gate valve 15 moves to the detection position of the lower gate valve proximity switch 19, the gate valve is fully closed, returning to its initial closed state. The hydraulic reciprocating baffle continues to retract, and the baffle body 23 gradually opens the discharge port of the feed hopper 11, moving to the detection position of the reset detection proximity switch 20. The hydraulic reciprocating baffle then stops running, thus completing the entire cycle. Subsequently, the control system of electrical control cabinet 7 sends a start signal to the conveying equipment to restart feeding, and the system enters the next working cycle.

[0055] This invention significantly outperforms traditional equipment in terms of dewatering efficiency, equipment reliability, and operational economy, providing a more efficient, reliable, and economical technical solution for fields such as organic solid waste and biomass processing, and possesses outstanding industrial application value.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-pressure dehydrator, characterized in that, include: The machine includes a frame (1), a separation chamber (2), a feeding device (3), a discharging device (4), a drainage device (5), a hydraulic station (6), and an electrical control cabinet (7). The separation chamber (2) is installed above the frame (1). A high-precision stroke monitoring device is installed on one side of the separation chamber (2). The separation chamber (2) is divided into an extrusion chamber (8), a feeding chamber (9), and a power chamber (10) from left to right along the axis. A hydraulic reciprocating baffle is installed inside the power chamber (10). The feeding device is fixedly connected to the top of the feeding chamber (9). (3) The front end of the extrusion chamber (8) is fixedly connected to the discharge device (4), the bottom of the extrusion chamber (8) is provided with a screen, the drainage device (5) is provided on the frame (1) near the feed chamber (9) and the extrusion chamber (8), the hydraulic station (6) is provided on the frame (1) near the power chamber (10), the electrical control cabinet (7) is provided on the side of the frame (1) near the power chamber (10), the hydraulic station (6) is electrically connected to the electrical control cabinet (7), and the electrical control cabinet (7) is also connected to the high-precision stroke monitoring device.

2. The high-pressure dehydrator according to claim 1, characterized in that, The feeding device (3) includes a feeding hopper (11) and a rotary level switch. The feeding hopper (11) is fixedly connected to the top of the feeding bin (9), and a rotary level switch is provided on one side of the feeding hopper (11).

3. A high-pressure dehydrator according to claim 2, characterized in that, The rotary paddle level switch includes a lower level switch (13) and an upper level switch (12). Both the lower level switch (13) and the upper level switch (12) are installed on one side of the feed hopper (11). Both the lower level switch (13) and the upper level switch (12) are connected to the electrical control cabinet (7) for communication.

4. A high-pressure dehydrator according to claim 1, characterized in that, The discharge device (4) includes a reinforced baffle (14), a hydraulic gate valve (15), a gate valve cylinder, a sealed transition chamber (16), a gate valve proximity switch, and a discharge port (17). One end of the reinforced baffle (14) is fixedly connected to the extrusion chamber (8), and the other end is fixedly connected to the discharge port (17). The reinforced baffle (14) is equipped with a hydraulic gate valve (15). The gate valve cylinder drives the hydraulic gate valve (15) to move. A gate valve proximity switch is provided on the top of the hydraulic gate valve (15). The gate valve proximity switch includes an upper gate valve proximity switch (18) and a lower gate valve proximity switch (19). Both the upper gate valve proximity switch (18) and the lower gate valve proximity switch (19) are communicatively connected to the electrical control cabinet (7). The bottom of the reinforced baffle (14) is connected to the sealed transition chamber (16).

5. A high-pressure dehydrator according to claim 1, characterized in that, The drainage device (5) adopts a conical water collection bucket structure.

6. A high-pressure dehydrator according to claim 1, characterized in that, The hydraulic station (6) includes a first hydraulic pump group, a second hydraulic pump group, and a hydraulic connector (25). The first hydraulic pump group is connected to the hydraulic reciprocating baffle cylinder through the hydraulic connector (25), and the second hydraulic pump group is connected to the gate valve cylinder of the discharge device (4) through the hydraulic connector (25).

7. A high-pressure dehydrator according to claim 1, characterized in that, The hydraulic reciprocating baffle cylinder includes a baffle cylinder body (23), an extrusion head body (24), and an extrusion cylinder. The baffle cylinder body (23) is slidably connected to the inner wall of the power chamber (10). The extrusion head body (24) is located at the front end of the baffle cylinder body (23). The extrusion cylinder is fixed inside the power chamber (10) and drives the baffle cylinder body (23) to move.

8. A high-pressure dehydrator according to claim 1, characterized in that, The high-precision stroke monitoring device includes a reset detection proximity switch (20), an intermittent extrusion control switch group (21), and a discharge position proximity switch (22). The reset detection proximity switch (20) is installed at the tail of the power chamber (10), the intermittent extrusion control switch group (21) is installed in the middle of the power chamber (10), and the discharge position proximity switch (22) is installed at the connection between the power chamber (10) and the feed chamber (9). The intermittent extrusion control switch group (21) includes multiple high-precision proximity switches. The reset detection proximity switch (20), the intermittent extrusion control switch group (21), and the discharge position proximity switch (22) are all communicatively connected to the electrical control cabinet (7).

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