Equipment and method for environment-friendly recycling of high-viscosity solid waste
By combining a high-pressure water jet and a mud and impurity screening chain machine with a mud twin-shaft mixer, the problem of crushing and removing impurities from high-viscosity solid waste has been solved, achieving efficient and stable slurry production and improving production efficiency and finished product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHENGZHOU SANHE HYDRAULIC MACHINERY
- Filing Date
- 2026-01-30
- Publication Date
- 2026-04-17
AI Technical Summary
Existing technologies face challenges in processing high-viscosity solid waste, including difficulties in dissolving impurities, removing impurities, measuring dosage, and increasing output. This results in low production efficiency and unstable product quality, making it difficult to achieve efficient and environmentally friendly reuse.
The equipment design combines a high-pressure water jet cutter and a mud and impurity screening chain machine with a mud twin-shaft mixer. High-viscosity solid waste is broken into small pieces by high-pressure water, impurities are removed, and the amount of powder solidifying agent is precisely controlled to achieve efficient mixing into a slurry.
It enables rapid crushing and impurity removal of high-viscosity solid waste, improves production efficiency, ensures consistent quality of finished slurry, reduces waste of powder solidifying agent and production costs, and achieves an output of 80-100 tons per hour.
Smart Images
Figure CN121869823A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an environmentally friendly solid waste treatment technology, and in particular to an equipment and method for the environmentally friendly reuse of high-viscosity solid waste. Background Technology
[0002] Currently, the annual output of high-viscosity solid waste from various foundation excavations and river dredging in southern and coastal areas is approximately 2 billion tons, with a cumulative stockpile exceeding 30 billion tons, occupying over 1 million hectares of land, placing immense pressure on the environment. Expanding the application of solid waste and building a "zero-waste city" system are requirements for urbanization in the new era. Low-strength fluidized bed material based on solid waste is a new application for turning high-viscosity solid waste into valuable resources.
[0003] Low-strength fluidized bed material based on solid waste: This material uses high-viscosity solid waste (soil) or fine particles of industrial and mining solid waste as the main base material, with the addition of cementitious materials, admixtures, and water. After thorough mixing, it can be transported via pipeline / pump, self-compacted, and hardened to a certain strength. "Low strength" refers to its lower hardened strength compared to concrete and mortar (28-day compressive strength is typically below 10 MPa), often compared to the bearing capacity of soil; therefore, high strength is not required. ACI 229R specifies that the 28-day unconfined compressive strength of controllable low-strength materials should not exceed 8.3 MPa; GB / T51450-2022 "Technical Standard for Backfill Engineering in Metal and Non-metal Mines" mentions that the strength of mine backfill is generally 2–4 MPa; and the design strength of backfill materials for municipal engineering is mostly 0.3–1.0 MPa. Because the required strength is not high, strict raw material and mix proportion parameters are not necessary, resulting in diverse and non-standard material compositions, making it very suitable for the recycling of high-viscosity solid waste.
[0004] Currently, the practical application of high-viscosity solid waste in the production of low-strength fluidized bed materials faces significant challenges, primarily in the following aspects: First, high-viscosity solid waste is difficult to dissolve. It is mainly lumpy, with a water content generally between 30% and 40%, and possesses extremely strong self-adhesion (binding force). It is difficult to break it down in water quickly through stirring, typically requiring a considerable amount of time (15-20 minutes) to achieve uniform mixing with water in a mixer, resulting in low production efficiency. Second, impurity removal is difficult. High-viscosity solid waste contains numerous impurities, such as stones (cement blocks), branches, steel bars, plastic products, and shredded clothing. Existing production lines frequently experience damage to mixer blades, blockages at the discharge port, and machine shutdowns. These impurities are difficult to remove quickly and promptly using existing production line equipment, which is currently the biggest obstacle limiting the use of high-viscosity solid waste. Third, measuring the actual usage (converted to the weight of dried high-viscosity solid waste) is difficult. Because the moisture content of high-viscosity solid waste varies from area to area and even from piece to piece, existing production lines cannot accurately measure the moisture content every time. Therefore, the actual amount of high-viscosity solid waste used each time is unknown. Since the dosage of added powder solidifier should vary with the actual amount of high-viscosity solid waste used, but in actual production, considering efficiency, the dosage of powder solidifier is basically fixed, the finished product is either over- or under-doped of powder solidifier, resulting in inconsistent quality—sometimes meeting standards, sometimes failing. This also leads to waste in powder solidifier production and difficulty in controlling production costs. Fourth, increasing output is difficult. Due to the above three problems, the current mainstream production lines generally have an output of 15-20 tons per hour, significantly lower than the user's requirement of 80-100 tons per hour. This hinders equipment promotion and poses a challenge to equipment manufacturers. These difficulties are the main reasons limiting the application of high-viscosity solid waste. Summary of the Invention
[0005] The technical problem to be solved by this invention is to overcome the shortcomings of existing calibration technology and provide a reasonable design, good crushing effect, ability to collect impurities and high production efficiency for the environmentally friendly reuse of high-viscosity solid waste.
[0006] The technical solution of this invention is: An environmentally friendly recycling device for high-viscosity solid waste includes a mud block storage and decomposition bin, a mud and debris screening chain machine, a high-pressure water pump, a clean water tank, a mud slurry twin-shaft mixer, and a solidifying agent weighing hopper. The mud block storage and decomposition bin is fixed directly above the mud and debris screening chain machine, and the mud slurry twin-shaft mixer is located directly below the mud and debris screening chain machine. A weighing device is installed at the lower end of the mud slurry twin-shaft mixer, and the solidifying agent weighing hopper is connected to the mud slurry twin-shaft mixer via a conveyor. The mud storage and decomposition chamber includes a mud storage chamber and a high-pressure water jet assembly. The mud storage chamber is a rectangular cavity with openings at the top and bottom. Two sets of water jet pipes of the high-pressure water jet assembly are respectively installed on the bottom sides of the mud storage chamber. The two sets of water jet pipes are respectively provided with nozzles at intervals. The two sets of water jet pipes are respectively connected to the clean water tank through the high-pressure water pump. The mud and debris screening chain machine includes a frame, a front sprocket assembly, a rear sprocket assembly, a drive assembly, and an annular chain. There are at least two annular chains, and support ribs are provided at intervals between two adjacent annular chains. Each support rib is provided with through holes at intervals, and a steel wire rope is provided through the through holes on the support rib. The two ends of the steel wire rope are fixed together by steel wire rope clips. The nozzles on the two sets of water spray pipes use high-pressure water to cut the mud blocks to be separated from both sides. The cut and broken mud blocks fall into the mud twin-shaft mixer and are mixed together with the solidifying agent. The mud concentration online measuring instrument monitors the mud concentration at any time, and the separated impurities are discharged from the mud and impurity screening chain machine.
[0007] Furthermore, the distance between two adjacent support ribs corresponds to the distance between two adjacent nozzles, and the height difference between the nozzles on the two sets of water spray pipes and the support ribs on the mud and debris screening chain machine is no more than 10 mm.
[0008] Furthermore, each of the water spray pipes is provided with a bearing assembly at both ends, the bearing assembly including a bearing and a bearing housing, and a shaft end connector is provided at one end of the water spray pipe, the shaft end connector being able to rotate together with the water spray pipe.
[0009] Furthermore, a lifting device is provided on one end face of the mud storage silo. The lifting device is connected to the shaft end connecting seat. The lifting device drives the shaft end connecting seat to move, thereby causing the water spray pipe to rotate.
[0010] Furthermore: the curing agent weighing hopper weighs the curing agent that enters it, and the weight of the curing agent in the weighing hopper can be sensed at any time by a sensor.
[0011] Furthermore: one end of the twin-shaft mud mixer is provided with a slurry outlet, and a discharge mechanism is provided at the slurry outlet. The discharge mechanism includes a discharge gate, a limiting block, a pneumatic rubber sealing ring, a discharge gate drive mechanism, and a sealing groove. The slurry outlet is surrounded by a sealing groove, and the pneumatic rubber sealing ring is installed in the sealing groove. The pneumatic rubber sealing ring is provided with an air filling and releasing pipe. The limiting block is provided on the shell of the twin-shaft mud mixer. The discharge gate can close and open the slurry outlet under the action of the discharge gate drive mechanism. The twin-shaft mud mixer is also equipped with an online mud concentration measuring instrument to measure the mud concentration in the twin-shaft mud mixer at any time.
[0012] Furthermore: the bottom of the solidifying agent weighing hopper is connected to the inlet of the discharge screw conveyor, and the outlet of the discharge screw conveyor is flexibly connected to the inlet of the mixing screw conveyor using a rubber sleeve or canvas pipe. The outlet of the mixing screw conveyor is installed on top of the slurry twin-shaft mixer. The powder solidifying agent delivered by the mixing screw conveyor can fall directly into the slurry twin-shaft mixer and be mixed with the sludge and water inside to form a slurry. A mixing water pipe is also installed on the pipe body of the mixing screw conveyor.
[0013] A method for the environmentally friendly reuse of high-viscosity solid waste, utilizing any of the aforementioned equipment for the environmentally friendly reuse of high-viscosity solid waste, includes the following steps: S1. Preparation of high-pressure water: Inject clean water into the water tank through an external water source, power on the two high-pressure water pumps to start working, and inject the pressurized high-pressure water into the two sets of spray pipes on the high-pressure water jet assembly, and spray them out from the nozzles connected to them respectively. S2. Preparation of mud and debris screening chain machine: Power on the drive component in the mud and debris screening chain machine to make it rotate intermittently. Each rotation will drive the support ribs installed on the ring chain to move forward a distance. This distance is exactly equal to the center distance between two adjacent support ribs, and also equal to the distance between two adjacent nozzles on the same side. S3. Placement of mud blocks to be separated: The whole mud block to be separated is fed into the mud storage bin from above. It is blocked by multiple support ribs of the mud and impurity screening chain machine and stops above the support ribs. Each support rib is a support point for the mud block to be separated. S4. High-pressure water cutting: High-pressure water sprayed from the nozzles cuts the mud blocks to be separated from both sides of the mud storage bin, quickly impacting and crushing the mud blocks to be separated from the support ribs into a mud-water mixture. The mud-water mixture falls from the gap between two adjacent support ribs under the action of gravity and enters the mud twin-shaft mixer. S5. Removal of impurities: Impurities larger than the gap between two adjacent support ribs in the mud block to be separated cannot continue to fall and stop on the support ribs. The impurities are washed by the high-pressure water sprayed from opposite sides and gradually exposed from the mud block to be separated. They are then carried forward a distance of varying length by the multiple support ribs that are in contact with them below. Driven by the forward movement of the multiple support ribs, large impurities will gradually be carried out from the mud storage bin and finally discharged from the front end of the mud and impurity screening chain machine for further processing. S6. Addition of curing agent: The curing agent is added to the twin-shaft mixer of mud through the curing agent weighing hopper and conveyor. The weight of the twin-shaft mixer of mud is measured by the weighing device. Combined with the concentration of the mud measured by the online mud concentration measuring instrument, the amount of curing agent can be accurately controlled. After the mud and curing agent reach the set mixing conditions, the mud discharge procedure is executed. S7. Continuously add the mud blocks to be separated into the mud storage bin to achieve continuous operation. When the operation is finished, simply turn off the corresponding control switch.
[0014] Furthermore: In step S6, water is injected into the pipe of the mixing screw conveyor through the mixing water pipe. This water and the powder curing agent will mix, causing the powder curing agent to absorb water and become moist. When the powder curing agent falls into the mud twin-shaft mixer, it will not turn into dust and float around everywhere.
[0015] Further: In step S6, during slurry discharge, the pneumatic rubber sealing ring is deflated. Due to its elasticity, it gradually contracts into the sealing groove, restoring its original state and completely separating from the discharge gate. The gap between the discharge gate and the mixer housing reappears, and the compressed discharge gate gradually relaxes. The discharge gate drive mechanism drives the discharge gate to gradually open the slurry outlet, and the slurry gradually flows out. After the slurry has completely flowed out, the discharge gate blocks the slurry outlet again. At the same time, air is injected into the pneumatic rubber sealing ring. The pneumatic rubber sealing ring expands, completely filling the gap between the discharge gate and the mixer housing, and pressing the discharge gate tightly. The inflation of the square pneumatic rubber sealing ring stops, completing the gate closing action.
[0016] The beneficial effects of this invention are: 1. This invention utilizes high-pressure water to break high-viscosity solid waste into small pieces, remove various impurities, and feed the small pieces of high-viscosity solid waste (which may contain small pieces of impurities) into a special mixer for high-viscosity solid waste. The high-viscosity solid waste, water, and powder solidifying agent are quickly mixed to form a slurry of qualified concentration, thereby improving the reuse of solid waste and achieving good environmental protection results.
[0017] 2. This invention has good crushing performance for high-viscosity solid waste. It applies the principle of water jet cutting, using a high-pressure water jet from a nozzle to cut large pieces of high-viscosity solid waste. The pressure of the high-pressure water reaches 7.0 to 10 MPa, which can effectively cut high-viscosity solid waste in any state and break it into small pieces.
[0018] 3. This invention has a good effect on removing impurities from high-viscosity solid waste. During the process of high-pressure water cutting of high-viscosity solid waste, if there are impurities in the high-viscosity solid waste, and if the high-pressure water cannot cut it into small pieces, the high-pressure water will clean and peel off the high-viscosity solid waste around it, exposing it from the high-viscosity solid waste. Then, it will be carried out from the high-viscosity solid waste by the conveying device and collected into one place for unified processing.
[0019] 4. The present invention can drive the water spray pipe to rotate through the lifting device, thereby changing the spray direction of the nozzle, which can better promote the breaking of mud and the cleaning of debris.
[0020] 5. This invention accurately calculates the amount of high-viscosity solid waste (converted to the weight of dried high-viscosity solid waste) by weighing the high-viscosity solid waste entering the high-viscosity solid waste mixer in real time and measuring the concentration of the slurry in real time. This allows for precise control of the amount of powder solidifying agent used, achieving consistent quality of the finished slurry and reducing the cost of powder solidifying agent.
[0021] 6. This invention uses high-pressure water to crush high-viscosity solid waste. The high-viscosity solid waste is not only crushed into small pieces, but also penetrated by high-pressure water during the crushing process. A certain amount of water has been incorporated into the interior, its molecular structure is destroyed, and its binding force is greatly reduced. It is easier to be crushed by the blades of the high-viscosity solid waste mixer and to be made into slurry more easily and quickly. Therefore, its output can reach a very high level.
[0022] 7. This invention has a reasonable design, good crushing effect, can collect impurities and has high production efficiency. It has a high degree of automation, is easy to promote and implement, and has good economic benefits. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 for Figure 1 Schematic diagram of the sectional structure of the middle AA section; Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB; Figure 6 This is a schematic diagram illustrating the usage state of the present invention; Figure 7 for Figure 1 Schematic diagram of the structure of the medium mud block storage and decomposition chamber; Figure 8 for Figure 7 Schematic diagram of the C-axis structure; Figure 9 for Figure 7 A top view of the mud storage and decomposition chamber shown. Figure 10 for Figure 7 Schematic diagram of the medium and high pressure water jet assembly; Figure 11 for Figure 1 A top view of the chain screening machine for medium mud and impurities; Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure of the middle DD; Figure 13 for Figure 11 Schematic diagram of the cross-sectional structure of the middle EE; Figure 14 for Figure 12 Enlarged view of section I; Figure 15 for Figure 1 A schematic diagram of the discharge mechanism of a twin-shaft mixer for medium-density slurry; Figure 16 for Figure 15 A bottom-view cross-sectional schematic diagram of the discharge structure shown. Figure 17 for Figure 15 Schematic diagram of the structure of the central sealing airbag; Figure 18 for Figure 16 Enlarged view of section H in the middle; Figure 19 for Figure 15 The diagram shows the state of the discharge mechanism when it is open. Figure 20 This is a process flow diagram of the present invention. Detailed Implementation
[0024] Example: See Figure 1 -- Figure 20In the diagram, 1-mud block storage and decomposition bin, 2-mud and impurity screening chain machine, 3-impurities, 4-mud slurry twin-shaft mixer, 5-weighing device, 6-wetting screw conveyor, 7-discharge screw conveyor, 8-wetting water pipe, 9-curing agent weighing hopper, 10-electrical cabinet, 11-diesel generator, 12-container body, 13-high-pressure water pump, 14-clean water tank, 15-clean water outlet, 16-container door, 17-slurry outlet, 18-mud slurry concentration online measuring instrument, 19-mud block to be decomposed and debrided, 20-mud block in the process of decomposition and debrided, 21-chain tensioning device, 22-rear sprocket assembly, 23-support rib, 2 4-Wire rope, 25-Frame, 26-Ring chain, 27-Front sprocket assembly, 28-Drive assembly, 29-Wire rope clamp, 30-Support platform, 31-Positioning plate, 32-Support plate, 51-Sludge storage bin, 52-High-pressure water jet assembly, 53-Lifting device, 521-Bearing assembly, 522-Water spray pipe, 523-Nozzle, 524-Middle lifting ring assembly, 525-Shaft end connecting seat, 61-Discharge gate, 62-First limit block, 63-Second limit block, 64-Third limit block, 66-Pneumatic rubber sealing ring, 67-Inflation / depression pipe, 68-Discharge gate drive mechanism, 69-Sealing groove.
[0025] The composition and function of an environmentally friendly recycling device for high-viscosity solid waste are as follows: The mud block storage and decomposition chamber 1 is fixed directly above the mud and impurity screening chain machine 2. The mud block storage and decomposition chamber 1 is mainly used to store mud blocks 19 to be decomposed and decontaminated. The mud and impurity screening chain machine 2 transports the impurities stripped by high-pressure water to a centralized processing area. The inlets of two high-pressure water pumps 13 are connected to the clean water outlets 15 of the clean water tank 14, and the outlets are respectively connected to two sets of water spray pipes 522 on the mud storage chamber 52 in the mud block storage and decomposition chamber 1, providing it with high-pressure water with a pressure of up to 7.0-10MPa. This high-pressure water is used for the crushing and decontamination of the mud blocks 19 to be decomposed and decontaminated.
[0026] The mud block storage and decomposition chamber 1 includes a mud storage chamber 51, a set of mud storage chambers 52, and a lifting device 53. The mud storage chamber 51 is a rectangular cavity with openings at the top and bottom, and the middle cavity is used to accommodate the mud blocks 19 to be decomposed. The mud storage chambers 52 are installed on both sides of the bottom of the mud storage chamber 51 and are located directly above the mud and debris screening chain machine 2, ensuring that the height difference between the nozzles 523 in the two sets of water spray pipes 522 and the support ribs 23 in the mud and debris screening chain machine 2 is no more than 10 mm.
[0027] A lifting device 53 is provided on one end face of the sludge storage bin 51. The lifting device 53 is connected to the shaft end connecting seat 525. The lifting device 53 drives the shaft end connecting seat 525 to move, thereby causing the water spray pipe 522 to rotate. This achieves high-pressure water cutting of the sludge and washing away the sludge around the impurities that cannot be cut, thus removing the impurities from the sludge.
[0028] The sludge storage silo 52 includes two sets of water spraying components. Each set of components has a water spray pipe 522, and each pipe 522 is equipped with multiple nozzles 523 as needed. Each pipe 522 has a seated bearing 521 at both ends and a central lifting ring 524 in the middle to enhance its rigidity and prevent it from sinking. Each bearing 521 and lifting ring 524 is fixed to a support 126. This structure allows for the use of high-pressure water to cut the sludge blocks from both sides, thereby more quickly cutting and breaking down the sludge, and also achieving complete removal of impurities.
[0029] The mud and debris screening chain machine 2 includes a frame 25, on which a rear sprocket set 22 and a front sprocket set 27 are mounted. Two or more chains 26 are installed between the rear sprocket set 22 and the front sprocket set 27, and a chain tensioning device 21 is installed on the rear sprocket set 22 to tension the two or more annular chains 26. A drive assembly 28 is also installed on the frame 25, which can drive the front sprocket set 27 to rotate, thereby driving the annular chains 26 and the rear sprocket set 22 to rotate. A support rib 23 is bolted to each corresponding link between the two or more annular chains 26. All support ribs 23 are parallel after installation, and the distance between them is exactly equal to the distance between two adjacent nozzles. The gap between two adjacent support ribs 23 is the maximum size of the sludge block after it is shredded by high-pressure water. This size not only determines the size of the shredded sludge block, but also the size of the impurities that cannot be shredded and leak through. Impurities larger than this gap cannot leak through the gap and can only be carried away by the mud and impurity screening chain machine 2.
[0030] A perforated positioning plate 31 is welded to both ends of each support rib 23. The holes on the two positioning plates 31 correspond to the holes on the annular chains 26 on both sides, and the two are firmly fixed with bolts. Each support rib 23 has small holes (through holes), which are used to install multiple steel wire ropes 24.
[0031] Each wire rope 24 passes through the corresponding small hole on each support rib 23, and wraps around the rear sprocket assembly 22 and the front sprocket assembly 27. Finally, it is securely fixed at the joint with a wire rope clip 29, ensuring that each fixed wire rope 24 is parallel to each other. The purpose of adding wire ropes 24 is to cut the sludge into smaller pieces as much as possible, making it easier for the twin-shaft mud mixer 4 to process.
[0032] The frame 25 of the mud and debris screening chain machine 2 has a strip-shaped support plate 32 in the middle, and T-shaped support platforms 30 are respectively set on both sides of the frame 25. The upper end of the support plate 32 contacts the lower surface of the support rib 23 to support the support rib 23, and the upper end of the support platform 30 contacts the lower end face of the ring chain 26 to support the ring chain 26.
[0033] A slurry twin-shaft mixer 4 is installed directly below the mud and debris screening chain machine 2. The mixer has a slurry outlet 17, and a discharge mechanism is set at the slurry outlet 17. The discharge mechanism includes a discharge gate 61, limit blocks (including a first limit block 62, a second limit block 63, and a third limit block 64), a pneumatic rubber sealing ring 66, a discharge gate drive mechanism 68, and a sealing groove 69. The slurry outlet 17 is surrounded by a sealing groove 69, and a pneumatic rubber sealing ring 66 is installed in the sealing groove 69. The pneumatic rubber sealing ring 66 is equipped with an air inlet / outlet pipe 67, and a control valve is installed on the air inlet / outlet pipe 67. Limit blocks are set on the shell of the slurry twin-shaft mixer 4. The discharge gate 61 can close and open the slurry outlet 17 under the action of the discharge gate drive mechanism 58. The slurry twin-shaft mixer 4 is also equipped with an online slurry concentration measuring instrument 18 to measure the concentration of slurry in the slurry twin-shaft mixer 4 at any time.
[0034] The mud block storage and decomposition bin 1, mud and impurity screening chain machine 2, mud slurry twin-shaft mixer 4, wet screw conveyor 6, discharge screw conveyor 7, and solidifying agent weighing hopper 9 are all installed inside a container 12. An electrical cabinet 10 is also installed inside the container for workers to electrically operate and control all equipment. A diesel generator 11 is also installed inside the container to supply power to the complete set of equipment in areas with power shortages. The container is equipped with a container door 16 for easy access for operators.
[0035] An environmentally friendly method for the reuse of high-viscosity solid waste includes the following steps: During preparation: Power on the two high-pressure water pumps 13 to start them working. Clean water flows from the clean water tank 14 into the inlet of the high-pressure water pump 13, where it is pressurized to 7.0-10 MPa. The pressurized high-pressure water is then injected from its outlet into the two sets of spray pipes 522 on the mud storage bin 52, and sprayed out from their respective connected nozzles 523. Each nozzle 523 is positioned approximately 10 mm directly above the support rib 23.
[0036] During preparation: Power on the drive assembly 28 of the mud and impurity screening chain machine 2 to make it rotate intermittently at high speed. Each rotation drives the support ribs 23 mounted on the chain 26 forward a specific distance, which is exactly equal to the center distance between two adjacent support ribs 23, and exactly equal to the distance between two adjacent nozzles on the same side. The interval between two rotations can be set arbitrarily, and is usually determined on-site according to the amount of impurities in the sludge to be cut. This interval can sometimes be set to zero, allowing the movement of the support ribs 23 to become a normal rotation state. The drive assembly 28 can even adjust the movement speed of the support ribs 23 through frequency converters, stepper motors, or servo motors.
[0037] During operation: The whole block of mud to be separated and decomposed 19 is fed from above by a loader or excavator into the mud storage bin 51 of the mud block storage and decomposition bin 1 and falls down. It is blocked by multiple support ribs 23 in the mud and impurity screening chain machine 2 and stops above the support ribs 23. Each support rib 23 is a support point for the mud block to be separated and decomposed 19.
[0038] During operation: High-pressure water sprayed from nozzles 523 cuts through the mud blocks 19 to be separated from both sides of the mud storage bin 51, rapidly impacting and crushing them into a mud-water mixture. This mixture then falls through the gaps between two adjacent support ribs 23 under gravity. Microscopically, the mud blocks 19 are cut into strips of sludge the same width as the mud storage bin 51 by the high-pressure water from multiple nozzles 523. These strips fall through the gaps between two adjacent support ribs 23, are further cut into smaller strips by the central wire rope 24, and finally fall into the twin-shaft mixer 4 below the mud and impurity screening chain machine 2. If there are no impurities in the mud blocks 19 or the impurities are smaller than the gaps between the two adjacent support ribs 23, the mud blocks 19 will quickly fall completely from the mud storage bin 51 under gravity. Experiments show that the more sludge blocks 19 to be separated and the higher the height of the sludge storage bin 51, the faster the sludge blocks 19 to be separated and broken under the action of gravity, and the greater the output of sludge after breaking.
[0039] During operation: Under most working conditions, the mud blocks 19 to be separated contain impurities of varying sizes, requiring the mud and impurity screening chain machine 2 to operate continuously. At set intervals, the support ribs 23 move forward a specific distance driven by the ring chain 26. This distance is exactly equal to the center distance between two adjacent support ribs 23. In other words, as long as the support ribs 23 remain stationary, there must be a nozzle 523 within 10 millimeters directly above them. The high-pressure water sprayed continuously consumes the mud blocks 19 to be separated above them, leaving the mud blocks 19 without support points and unable to form a supporting force. After being cut by the high-pressure water, they fall through the gap between the two adjacent support ribs 23 under the action of gravity and are then cut into smaller mud strips by the wire rope 24. Impurities larger than the gap between two adjacent support ribs 23 in the mud block 19 to be separated are supported by two or more adjacent support ribs 23 and cannot continue to fall. At this time, they will be washed by the high-pressure water sprayed out, and gradually exposed from the mud block 19 to be separated. Then, they are carried forward a distance of varying length by multiple support ribs that are in contact below. Driven by the forward movement of multiple support ribs 23, the large impurity is gradually carried out from the mud storage bin 51 and discharged from the front end of the mud and impurity screening chain machine 2 for further processing.
[0040] During operation: The online mud concentration measuring instrument 18 installed on the twin-shaft mud mixer 4 measures the concentration of the slurry being mixed in the mixer in real time. When the measured value reaches the set concentration value, the two high-pressure water pumps 13 are powered off and stop working, ceasing to supply high-pressure water and stop cutting the high-viscosity solid waste in the mud storage bin 1. At the same time, the mud and debris screening chain machine 2 also stops working. At this time, the total weight of the mud is obtained by weighing with the four weighing devices 5 at the set concentration. Then, the volume of the slurry at the set concentration can be calculated. By comparing it with the concentration data in the standard database, the content of dried sludge in the total weight of sludge (containing water) entering the twin-shaft mud mixer 4 can be calculated. Then, the PLC computer can calculate the required weight of solidifying agent.
[0041] During operation: The curing agent weighing hopper 9 stores a certain weight of powder curing agent. This hopper also includes a weighing device, which can accurately measure how much powder curing agent has entered and how much has been released. The discharge screw conveyor 7 quickly feeds the powder curing agent from the curing agent weighing hopper 9 into the inlet of the mixing screw conveyor 6. At the same time, the mixing water pipe 8 injects a certain amount of water into the pipe of the mixing screw conveyor 6. This water, along with the powder curing agent, moves towards the discharge port in the pipe of the mixing screw conveyor 6. During this process, the water and the powder curing agent will mix to a certain extent, causing the powder curing agent to absorb water and become moist. When it falls from the discharge port of the mixing screw conveyor 6 into the mud twin-shaft mixer 4, the powder curing agent will not turn into dust and float around, and the area around the mud twin-shaft mixer 4 will remain relatively clean. The weighing device in the curing agent weighing hopper 9 continuously weighs the weight change of the powder curing agent in the curing agent weighing hopper 9. Once the weight change is consistent with the calculated required weight of powder curing agent, the discharge screw conveyor 7 stops and no longer supplies powder curing agent to the slurry twin-shaft mixer 4. The mixing water pipe 8 and the mixing screw conveyor 6 will continue to work for a period of time to clean the inside of the mixing screw conveyor 6 with water.
[0042] After the required weight of powder solidifying agent has been completely introduced into the mud twin-shaft mixer 4, the mud twin-shaft mixer 4 continues to mix for a certain period of time. After the set time is reached, the slurry discharge procedure is executed.
[0043] During slurry discharge, the pneumatic rubber sealing ring 66 releases air and then gradually retracts into the sealing groove 69 until it returns to its original state and completely disengages from the discharge gate. The compressed discharge gate 61 also gradually relaxes. When the sensor detects that the pneumatic rubber sealing ring 66 has no pressure, the discharge gate drive mechanism 68 moves along the width direction of the mixer, causing the discharge gate 61 to gradually open the slurry outlet 17, and the slurry gradually flows out of the mixer. When the sensor detects that the discharge gate 61 has completely disengaged from the discharge outlet 17, the discharge outlet 17 is fully open, and the slurry flows out of the mixer at a faster speed. When the set time is reached (this time was obtained after on-site testing), it is assumed that the slurry in the mixer has completely flowed out, and the gate closing procedure is initiated.
[0044] When the door is closed, the discharge door drive mechanism 68 drives the discharge door 61 to move in the opposite direction and gradually covers the slurry outlet 17 and the sealing groove 69. The control valve opens, and the high-pressure air source inflates the pneumatic rubber sealing ring 66. The expanded pneumatic rubber sealing ring 66 completely fills the gap between the discharge door 61 and the mixer housing and presses the discharge door 61 tightly. When the pressure of the pneumatic rubber sealing ring 66 reaches the set value, the control valve closes, stops inflating the pneumatic rubber sealing ring 66, and completes the door closing action.
[0045] After the door is closed, the next cycle begins: first, a certain amount of water is added to the mud twin-shaft mixer 4 through the water supply pipe of the clean water tank 14, and then the two high-pressure water pumps 13 are powered on to supply high-pressure water to cut the high-viscosity solid waste in the mud storage bin of the decomposition bin 1.
[0046] Through continuous cyclical operation of this complete set of equipment, impurities in high-viscosity solid waste are stripped and picked out, and the cleaner high-viscosity solid waste, water, and powder solidifying agent are made into a slurry of a set concentration and output as a finished product to the user.
[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications made based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.
Claims
1. A device for the environmentally friendly reuse of high-viscosity solid waste, comprising a mud block storage and decomposition bin, a mud and impurity screening chain machine, a high-pressure water pump, a clean water tank, a mud slurry twin-shaft mixer, and a solidifying agent weighing hopper, characterized in that: The mud block storage and decomposition chamber is fixed directly above the mud and debris screening chain machine, the mud slurry twin-shaft mixer is located directly below the mud and debris screening chain machine, a weighing device is installed at the lower end of the mud slurry twin-shaft mixer, and the solidifying agent weighing hopper is connected to the mud slurry twin-shaft mixer through a conveyor. The mud storage and decomposition chamber includes a mud storage chamber and a high-pressure water jet assembly. The mud storage chamber is a rectangular cavity with openings at the top and bottom. Two sets of water jet pipes of the high-pressure water jet assembly are respectively installed on the bottom sides of the mud storage chamber. The two sets of water jet pipes are respectively provided with nozzles at intervals. The two sets of water jet pipes are respectively connected to the clean water tank through the high-pressure water pump. The mud and debris screening chain machine includes a frame, a front sprocket assembly, a rear sprocket assembly, a drive assembly, and an annular chain. There are at least two annular chains, and support ribs are provided at intervals between two adjacent annular chains. Each support rib is provided with through holes at intervals, and a steel wire rope is provided through the through holes on the support rib. The two ends of the steel wire rope are fixed together by steel wire rope clips. The nozzles on the two sets of water spray pipes use high-pressure water to cut the mud blocks to be separated from both sides. The cut and broken mud blocks fall into the mud twin-shaft mixer and are mixed together with the solidifying agent. The mud concentration online measuring instrument monitors the mud concentration at any time, and the separated impurities are discharged from the mud and impurity screening chain machine.
2. The equipment for the environmentally friendly reuse of high-viscosity solid waste according to claim 1, characterized in that: The distance between two adjacent support ribs corresponds to the distance between two adjacent nozzles, and the height difference between the nozzles on the two sets of water spray pipes and the support ribs on the mud and debris screening chain machine is no more than 10 mm.
3. The equipment for the environmentally friendly reuse of high-viscosity solid waste according to claim 1, characterized in that: Each of the water spray pipes is provided with a bearing assembly at both ends. The bearing assembly includes a bearing and a bearing housing. One end of the water spray pipe is provided with a shaft end connector, which can rotate together with the water spray pipe.
4. The equipment for the environmentally friendly reuse of high-viscosity solid waste according to claim 3, characterized in that: A lifting device is provided on one end face of the mud storage silo. The lifting device is connected to the shaft end connecting seat. The lifting device drives the shaft end connecting seat to move, thereby causing the water spray pipe to rotate.
5. The equipment for the environmentally friendly reuse of high-viscosity solid waste according to claim 1, characterized in that: The curing agent weighing hopper weighs the curing agent that enters it, and the weight of the curing agent in the weighing hopper can be sensed at any time by a sensor.
6. The equipment for the environmentally friendly reuse of high-viscosity solid waste according to claim 1, characterized in that: The twin-shaft mud mixer has a slurry outlet at one end, and a discharge mechanism is provided at the slurry outlet. The discharge mechanism includes a discharge gate, a limiting block, a pneumatic rubber sealing ring, a discharge gate drive mechanism, and a sealing groove. The slurry outlet is surrounded by a sealing groove, and the pneumatic rubber sealing ring is installed in the sealing groove. The pneumatic rubber sealing ring is equipped with an air filling and venting pipe. The limiting block is installed on the shell of the twin-shaft mud mixer. The discharge gate can close and open the slurry outlet under the action of the discharge gate drive mechanism. The twin-shaft mud mixer is also equipped with an online mud concentration measuring instrument to measure the mud concentration in the twin-shaft mud mixer at any time.
7. The equipment for the environmentally friendly reuse of high-viscosity solid waste according to claim 1, characterized in that: The bottom of the solidifying agent weighing hopper is connected to the inlet of the discharge screw conveyor. The outlet of the discharge screw conveyor is flexibly connected to the inlet of the mixing screw conveyor using a rubber sleeve or canvas pipe. The outlet of the mixing screw conveyor is installed on top of the slurry twin-shaft mixer. The powder solidifying agent delivered by the mixing screw conveyor can fall directly into the slurry twin-shaft mixer and be mixed with the sludge and water inside to form a slurry. A mixing water pipe is also installed on the pipe body of the mixing screw conveyor.
8. A method for the environmentally friendly reuse of high-viscosity solid waste, utilizing the equipment for the environmentally friendly reuse of high-viscosity solid waste as described in any one of claims 1-5, comprising the following steps: S1. Preparation of high-pressure water: Inject clean water into the water tank through an external water source, power on the two high-pressure water pumps to start working, and inject the pressurized high-pressure water into the two sets of spray pipes on the high-pressure water jet assembly, and spray them out from the nozzles connected to them respectively. S2. Preparation of mud and debris screening chain machine: Power on the drive component in the mud and debris screening chain machine to make it rotate intermittently. Each rotation will drive the support ribs installed on the ring chain to move forward a distance. This distance is exactly equal to the center distance between two adjacent support ribs, and also equal to the distance between two adjacent nozzles on the same side. S3. Placement of mud blocks to be separated: The whole mud block to be separated is fed into the mud storage bin from above. It is blocked by multiple support ribs of the mud and impurity screening chain machine and stops above the support ribs. Each support rib is a support point for the mud block to be separated. S4. High-pressure water cutting: High-pressure water sprayed from the nozzles cuts the mud blocks to be separated from both sides of the mud storage bin, quickly impacting and crushing the mud blocks to be separated from the support ribs into a mud-water mixture. The mud-water mixture falls from the gap between two adjacent support ribs under the action of gravity and enters the mud twin-shaft mixer. S5. Removal of impurities: Impurities larger than the gap between two adjacent support ribs in the mud block to be separated cannot continue to fall and stop on the support ribs. The impurities are washed by the high-pressure water sprayed from opposite sides and gradually exposed from the mud block to be separated. They are then carried forward a distance of varying length by the multiple support ribs that are in contact with them below. Driven by the forward movement of the multiple support ribs, large impurities will gradually be carried out from the mud storage bin and finally discharged from the front end of the mud and impurity screening chain machine for further processing. S6. Addition of curing agent: The curing agent is added to the twin-shaft mixer of mud through the curing agent weighing hopper and conveyor. The weight of the twin-shaft mixer of mud is measured by the weighing device. Combined with the concentration of the mud measured by the online mud concentration measuring instrument, the amount of curing agent can be accurately controlled. After the mud and curing agent reach the set mixing conditions, the mud discharge procedure is executed. S7. Continuously add the mud blocks to be separated into the mud storage bin to achieve continuous operation. When the operation is finished, simply turn off the corresponding control switch.
9. A method for the environmentally friendly reuse of high-viscosity solid waste according to claim 8, characterized in that: in In step S6, water is injected into the pipe of the mixing screw conveyor through the mixing water pipe. This water mixes with the powder curing agent, causing the powder curing agent to absorb water and become moist. When the powder curing agent falls into the mud twin-shaft mixer, it will not turn into dust and float around everywhere.
10. A method for the environmentally friendly reuse of high-viscosity solid waste according to claim 8, characterized in that: in In step S6, during slurry discharge, the pneumatic rubber sealing ring is deflated. Due to its elasticity, it gradually contracts into the sealing groove, returning to its original state and completely separating from the discharge gate. The gap between the discharge gate and the mixer housing reappears, and the compressed discharge gate gradually relaxes. The discharge gate drive mechanism drives the discharge gate to gradually open the slurry outlet, and the slurry gradually flows out. After the slurry has completely flowed out, the discharge gate closes the outlet again, while air is injected into the pneumatic rubber sealing ring. The pneumatic rubber sealing ring expands, completely filling the gap between the discharge gate and the mixer housing, and pressing the discharge gate tightly. The inflation of the square pneumatic rubber sealing ring stops, completing the closing action.