Sensitive material anti-friction type stirring system and reaction washing clarification thickener

Abstract

The invention relates to the technical field of sensitive material treatment, in particular to a sensitive material anti-friction stirring system which comprises a liquid seal seat mounted at the top of a tank, the liquid seal seat is of a sleeve-shaped structure with an opening in the top, an insertion hole for a stirring shaft to penetrate through is formed in the bottom of the liquid seal seat, and the diameter of the insertion hole is larger than that of the stirring shaft; the liquid sealing seat comprises an outer baffle and an inner baffle which are coaxially arranged, a liquid sealing ring cavity for injecting a sealing medium is formed between the inner baffle and the outer baffle, a liquid sealing barrel with an opening in the bottom is coaxially fixed on the stirring shaft, a barrel opening of the liquid sealing barrel is downwards inserted into the liquid sealing ring cavity, and the barrel opening of the liquid sealing barrel is located below the liquid level of the liquid sealing ring cavity. Friction between the main shaft and materials during high-speed rotation is avoided, and the risk during sensitive material production is reduced. The invention also provides a reaction washing clarification concentrator.

Description

Technical Field

[0001] This invention relates to the field of sensitive material processing technology, specifically to a sensitive material anti-friction stirring system and a reaction washing, clarification and concentration machine. Background Technology

[0002] Modern chemical, pharmaceutical, nuclear energy, and new materials industries often involve sensitive materials in their production processes. These materials are flammable, explosive, and volatile, highly sensitive, and particularly susceptible to mechanical friction, posing significant safety risks. Currently, in addition to the synthesis reaction within a reactor, these sensitive materials require washing, clarification, and concentration during production. Existing reactors, as described in application number "CN202A2100783A21.8", employ a stirring paddle to forcefully mix and create turbulence and slurry during washing, thoroughly mixing the material and washing liquid. The mother liquor is then filtered out using a filter medium, and the final clarified and concentrated liquid achieves material clarification and concentration.

[0003] Because sensitive materials are highly sensitive, flammable, explosive, toxic, and harmful, friction, squeezing, and impact during production can cause material alteration or even explosions. Existing reactors present problems such as main shaft seal friction, feeding impact, friction during stirring and unloading, and filter cloth fixing friction. In particular, when the main shaft rotates at high speed, high-speed friction occurs between the mechanical seal structure and the material, which can easily lead to danger. Therefore, these problems urgently need to be solved. Summary of the Invention

[0004] To avoid and overcome the technical problems existing in the prior art, this invention provides a friction-resistant stirring system for sensitive materials. This invention avoids friction between the main shaft and the material during high-speed rotation, reducing the danger during the production of sensitive materials. This invention also provides a reaction washing, clarification, and concentration machine.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A friction-resistant stirring system for sensitive materials includes a liquid seal seat installed on the top of a tank. The liquid seal seat has a sleeve-shaped structure with an open top. An insertion hole for a stirring shaft to pass through is provided at the bottom of the liquid seal seat. The diameter of the insertion hole is larger than the diameter of the stirring shaft. The liquid seal seat includes an outer baffle and an inner baffle arranged coaxially. There is a liquid seal annular cavity between the inner baffle and the outer baffle for injecting a sealing medium. A liquid seal barrel with an open bottom is coaxially fixed on the stirring shaft. The opening of the liquid seal barrel is inserted into the liquid seal annular cavity with its opening facing downwards, and the opening of the liquid seal barrel is located below the liquid surface in the liquid seal annular cavity.

[0006] As a further aspect of the present invention: the replenishment pipe draws the medium from the tank and replenishes it into the liquid seal ring cavity. A level gauge for measuring the liquid level in the liquid seal ring cavity is also installed on the liquid seal seat. While the stirring shaft moves up and down in the vertical direction, the replenishment pipe replenishes the medium into the liquid seal ring cavity, so that the opening of the liquid seal tank is always below the liquid level in the liquid seal ring cavity.

[0007] As a further embodiment of the present invention: the liquid seal tank includes a liquid seal ring arranged coaxially with the stirring shaft. The liquid seal ring is fixed to the stirring shaft bolt by locking bolts arranged radially. An annular liquid baffle is coaxially fixed below the liquid seal ring. There is a gap between the liquid baffle and the inner baffle and the outer baffle.

[0008] As a further embodiment of the present invention: the liquid seal seat is fixed to the tank body by bolts, and the tops of the outer baffle and the inner baffle extend to the outside of the tank body; a sealing ring is installed at the contact surface between the liquid seal ring and the stirring shaft, and a sealing ring is installed at the contact surface between the liquid seal seat and the tank body.

[0009] A reaction washing clarification and concentration machine includes a sensitive material anti-friction type stirring system. A filter plate is installed inside the tank, which divides the tank cavity into an upper working chamber and a lower mother liquor chamber. A stirring shaft extends from the working chamber through a liquid seal seat to the outside of the tank and is coaxially fixed with the motor shaft of the stirring motor. A lifting system is installed on the tank to drive the stirring motor and stirring shaft to perform lifting and lowering actions. A mother liquor discharge pipe communicating with the mother liquor chamber is provided at the bottom of the tank.

[0010] As a further embodiment of the present invention: a slurry suction pipe is installed on the side wall of the tank, extending into the working chamber and avoiding the position of the blade rotation path. The suction port of the slurry suction pipe extends to the center of the filter disc and there is a gap between it and the surface of the filter disc. The slurry suction pipe is connected to a peristaltic pump to suction the slurry that has been washed. A control valve and a pressure sensor are installed at the outlet of the slurry suction pipe.

[0011] As a further embodiment of the present invention: a material inlet pipe is installed on the side wall of the tank, a flow meter and a control valve are installed at the inlet of the material inlet pipe, the material inlet pipe is C-shaped, and the outlet of the material inlet pipe is arranged in close contact with the inner wall of the tank.

[0012] As a further aspect of the present invention: a radar level gauge is installed on the tank to monitor the liquid level in the tank in real time, and a sight glass is also installed on the tank for visually inspecting the condition inside the tank.

[0013] As a further embodiment of the present invention: the impeller on the stirring shaft includes an S-shaped long impeller and an S-shaped short impeller, the surfaces of the long impeller and the short impeller are arranged vertically, and the axes of symmetry of the long impeller and the short impeller coincide with the axis of the stirring shaft. The length directions of the long impeller and the short impeller after installation are perpendicular to each other; the stirring shaft and the impeller are welded together to form an integral design.

[0014] As a further embodiment of the present invention: a washing spray pipe is horizontally arranged inside the tank, the height of the washing spray pipe is above the bottom surface of the liquid seal seat, and washing spray balls are evenly arranged on the washing spray pipe, with the spraying direction of the washing spray balls pointing towards the filter plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. During operation, some material leaking from the tank is blocked by the liquid seal ring after passing through the annular gap between the insertion hole and the stirring shaft, and enters the liquid seal ring cavity to mix with the medium inside the liquid seal ring cavity, thus achieving a liquid seal effect. This avoids friction between the main shaft and the material during high-speed rotation, reducing the danger during the production of sensitive materials. After the replenishment pipe is inserted into the liquid seal ring cavity, the liquid level in the liquid seal ring cavity is measured according to the liquid level gauge, and the medium in the tank is drawn and injected into the liquid seal ring cavity. During the lifting and lowering of the stirring shaft, the liquid level of the medium in the liquid seal ring cavity is always higher than the height of the opening of the liquid seal tank, ensuring the reliability of the seal.

[0016] 2. The liquid seal seat of the present invention is directly fixed to the stirring shaft by bolts, so that it can rise and fall synchronously with the stirring shaft. A sealing ring is set at the contact surface between the two to avoid media leakage. The filter plate divides the tank cavity into a working chamber and a mother liquid chamber. Driven by the pneumatic or hydraulic lifting system, the stirring motor and the stirring shaft are driven to rise and fall synchronously. The forward and reverse rotation and rising and falling of the stirring shaft form a multi-dimensional composite motion, which can fully mix the materials.

[0017] 3. This invention combines reaction, washing, clarification and filtration functions. The unique design of the double S-shaped impeller on the stirring shaft can reduce energy consumption while ensuring mixing intensity, thus achieving energy saving. The C-shaped design of its material inlet pipe can prevent the material from impacting the bottom filter plate during feeding and causing danger. The radar level gauge can monitor the liquid level in the tank in real time. By installing a sight glass on the tank and cooperating with the radar level gauge, dual monitoring of the slurry level can be achieved.

[0018] 4. The inlet of the slurry suction pipe of this invention is designed in the shape of a horseshoe to reduce the discharge resistance. The slurry is discharged to the downstream equipment through the suction of the peristaltic hose pump. By installing flow meters on the feed, liquid inlet and liquid outlet pipes of the tank, the control system can calculate and display the dryness and wetness trend of the material in the tank in a timely manner, interlock with the action of the actuator, and provide reminders when necessary. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of point C in the middle.

[0021] Figure 3 This is a schematic diagram of the structure of the stirring blade in this invention.

[0022] Figure 4 A schematic diagram of a process-controlled air-blown unloading filter with the inverted U-shaped tube positioned at a low position; Figure 5 A schematic diagram of a process-controlled air-blown unloading filter with the inverted U-shaped tube positioned at a high position; Figure 6 This is a three-dimensional structural diagram of the four blade components shown in the figure.

[0023] In the picture: A01, Tank body; A11, Liquid seal seat; 11A, Outer baffle; 11B, Inner baffle; 11C, Insertion hole; 11D, Liquid seal ring cavity; 11F, Liquid replenishment pipe; 11G, Liquid level gauge; A2, stirring motor; A21, stirring shaft; A22, impeller; A23, liquid seal tank; A231, Liquid seal ring; A232, Liquid separator plate; A233, Locking bolt; A3. Lifting system; A4. Material inlet pipe; A5. Washing spray ball; A6, Slurry suction pipe; A7, Filter plate; A8, Mother liquor discharge pipe.

[0024] 1. Blade assembly; 10. Pneumatic control box; 11. Rotary joint; 12. Main shaft; 13. Side shaft; 14. Blade support; 15. Air nozzle; 2. Drive unit; 3. Cylinder body; 30. Top cover plate; 31. Conical cylinder; 32. Conical filter disc; 33. Liquid collection chamber; 34. Conical ring; 35. Shell; 36. Opening area; 37. Annular opening; 40. Lifting and adjusting device; 41. Inverted U-shaped tube; 42. Sealing seat; 43. Connecting pipe; 51. Main air valve; 52. Regulating device control valve; 53. Filter press inlet valve; 54. Gas control valve; 55. Feed control valve; 56. Exhaust control valve; 57. Mother liquor U-tube discharge valve; 58. Mother liquor discharge valve; 59. Backflush air inlet valve; 510. Automatic slag discharge valve; 61. Feed inlet; 62. Air inlet; 63. Exhaust outlet; 64. Mother liquor outlet 2; 65. Mother liquor outlet 1; 66. Slag discharge port. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-6 In this embodiment of the invention, a sensitive material anti-friction stirring system and a reaction washing clarification and concentration machine include a tank A01 that provides reaction space for the material. The design pressure, design temperature, and equipment material of the tank A01 can be designed according to specific requirements. An external jacket is also provided, with a heat source inlet at the upper part of the jacket and a heat source outlet at the lower part. The end cap generally has a material inlet, a washing liquid inlet, a supernatant suction port, a pressure gauge port, a safety valve port, an air inlet, and an exhaust port, etc., interlocking the heat source, automatic valve, and material temperature sensor to achieve safe and automated control of the temperature of the sensitive material. The specific structure will not be described in detail.

[0027] A stirring motor A2 is installed on the top of tank A01. The stirring motor A2 is fixed to a lifting system A3 outside tank A01. The lifting system A3 can be a hydraulic or pneumatic lifting system, used to drive the stirring motor A2 to move vertically. The stirring motor A2 drives the stirring shaft A21 to rotate via a reducer. Driven by the stirring motor A2, the stirring shaft A21 rotates in both directions and moves up and down, achieving multi-dimensional washing to maximize the washing effect and prevent the bottom of the impeller A22 from rubbing against the filter cake. The stirring shaft A21 and the impeller A22 are welded together, eliminating the need for bolts. The impeller A22 includes a long S-shaped impeller and a short S-shaped impeller. The surfaces of both the long and short impellers are vertically arranged, and their axes of symmetry coincide with the axis of the stirring shaft A21. The length directions of the long and short impellers after installation are perpendicular to each other. The double-S blade structure creates multi-dimensional composite motion through forward and reverse rotation and lifting / lowering, which can thoroughly mix materials. The stirring speed is generally below 30 rpm, and this controlled stirring speed greatly helps to reduce the production risks associated with sensitive materials. The unique design of the double-S blades can reduce energy consumption while ensuring mixing intensity, thus achieving energy-saving effects.

[0028] A filter disc A7 is horizontally arranged inside the tank A01. In one embodiment, the filter disc A7 may include a filter cloth pressure plate, a filter cloth, and a perforated plate arranged sequentially from top to bottom. The filter cloth pressure plate and the perforated plate are welded together to press the filter cloth tightly. The overall structure is directly pressed and fixed using the flange face inside the tank A01, without bolts. The filter disc A7 divides the inner cavity of the tank A01 into an upper working chamber and a lower mother liquor chamber. A material inlet pipe A4 is installed on the tank A01. The material inlet pipe A4 is C-shaped, and its material outlet is flush with the inner wall of the tank A01 to prevent the material from impacting the filter disc A7 at the bottom during feeding and causing danger. A flow meter and a control valve are installed at the material inlet of the material inlet pipe A4 to control the material injection rate in real time. The bottom surface of the tank A01 is sloped to avoid mother liquor stagnation.

[0029] A radar level gauge is also installed inside tank A01 to monitor the liquid level in real time. By installing a sight glass on tank A01 in conjunction with the radar level gauge, dual monitoring of the slurry level can be achieved. Flow meters are installed on the feed, inlet, and outlet pipes of tank A01, allowing the control system to calculate and display the dryness / wetness trend of the material inside the tank in a timely manner, interlocking with the actuators and providing alerts when necessary.

[0030] The slurry suction pipe A6 extends into the working chamber and is located above the center of the filter disc A7. The optimal distance between the pipe opening and the filter cloth gap of the filter disc A7 is 8 mm. The opening of the slurry suction pipe A6 is designed in a horseshoe shape to reduce discharge resistance. The slurry is discharged to downstream equipment via a peristaltic hose pump. A control valve and pressure sensor are installed at the outlet of the slurry suction pipe A6. The slurry suctioned by the slurry suction pipe A6 is delivered to a process-controlled air-blown discharge filter.

[0031] A backwashing device can also be installed under the filter plate inside tank A01 to clean the filter plate A7 from bottom to top, preventing the filter plate A7 from clogging. A washing spray pipe is horizontally arranged inside tank A01, positioned above the bottom surface of the liquid seal seat A11. Washing spray balls A5 are evenly distributed on the washing spray pipe, with the spray direction of the washing spray balls A5 pointing towards the filter plate A7.

[0032] A liquid seal seat A11 is installed on the top of the tank A01. The liquid seal seat A11 has a sleeve-shaped structure with an open top, and a sealing ring is installed at the contact surface between the liquid seal seat A11 and the tank A01. An insertion hole 11C with a diameter larger than that of the stirring shaft A21 is coaxially opened at the bottom of the liquid seal seat A11. The stirring shaft A21 passes through the insertion hole 11C of the liquid seal seat A11 from outside the tank A01, thus entering the working chamber of the tank A01. The liquid seal seat A11 includes an outer baffle 11A and an inner baffle 11B arranged coaxially. Both the outer baffle 11A and the inner baffle 11B are annular plates, and the inner baffle 11A and the outer baffle 11B enclose a liquid seal annular cavity 11D.

[0033] The replenishment pipe 11F is inserted vertically into the liquid seal ring cavity 11D, and the medium in the tank A01 is drawn and injected into the liquid seal ring cavity 11D. A liquid seal barrel A23 is coaxially fixed to the shaft of the stirring shaft A21 located outside the tank A01. The liquid seal barrel A23 includes a liquid seal ring A231 coaxially fixed to the stirring shaft A21. An annular liquid baffle plate A232 is coaxially fixed below the liquid seal ring A231. The liquid baffle plate A232 cooperates with the liquid seal ring A231 to make the liquid seal barrel A23 have a barrel-shaped structure with an open bottom. The diameter of the liquid baffle plate A232 is smaller than the diameter of the outer baffle 11A and larger than the diameter of the inner baffle 11B. The bottom of the liquid baffle plate A232 is always below the liquid surface in the liquid seal ring cavity 11D.

[0034] The fixing method between the liquid sealing ring A231 and the stirring shaft A21 is not limited, but it is preferable to arrange bolts radially to fix the liquid sealing ring A231 and the stirring shaft A21. To improve the sealing effect, a sealing ring is installed at the contact surface between the stirring shaft A21 and the liquid sealing ring A231. A level gauge 11G for measuring the liquid level in the liquid sealing ring cavity 11D is also installed inside the liquid sealing ring cavity 11D. While the stirring shaft A21 drives the liquid sealing tank A23 to move up and down, the replenishment pipe 11F replenishes or extracts the medium into the liquid sealing ring cavity 11D, so that the bottom surface of the liquid sealing tank A23 is always below the liquid level in the liquid sealing ring cavity 11D. When the tank A01 is working, some of the material that leaks out is blocked by the liquid sealing ring A231 after passing through the annular gap between the insertion hole 11C and the stirring shaft A21, and enters the liquid sealing ring cavity 11D, where it mixes with the medium in the liquid sealing ring cavity 11D to achieve the liquid sealing effect.

[0035] Process-controlled pneumatic discharge filter: such as Figure 4As shown, the system includes a collection chamber 33 (annular collection space located below the filtration zone) for containing filtrate. An inverted U-shaped tube 41 (a liquid seal and drainage control structure that utilizes the siphon principle to achieve controllable discharge) is installed outside the collection chamber 33. A mother liquor outlet 65 (main discharge port, used to discharge filtrate under normal operating conditions) is formed at the lowest liquid level of the collection chamber 33, extending to the outside. One end of the inverted U-shaped tube 41 is connected to the mother liquor outlet 65 through a variable length tube structure (a flexible connection to adapt to lifting and lowering movements). The other end of the inverted U-shaped tube 41 is a mother liquor outlet 64 (the mother liquor outlet 64 is always lower than the mother liquor outlet 65 to ensure siphon pressure). A lifting and adjusting device 40 is also installed outside the collection chamber 33 to drive the inverted U-shaped tube 41 to move vertically back and forth to control the height difference between the mother liquor outlet 64 and the lowest liquid level (the siphon force is controlled by adjusting the liquid seal height).

[0036] According to one embodiment of the present invention, the variable length tube structure includes a connecting pipe 43 (fixed guide sleeve) vertically installed on the mother liquor outlet 65, and the connecting end of the inverted U-shaped tube 41 is slidably sleeved in the connecting pipe 43 through a sealing seat 42 (sealed sliding fit, which allows up and down movement while preventing leakage, usually using polytetrafluoroethylene or rubber seals).

[0037] According to one embodiment of the present invention, the lifting adjustment device 40 is a pneumatic lifting device (commonly telescopic cylinders, which have fast response and good explosion-proof performance). The air source interface of the pneumatic lifting device is connected to or disconnected from the air source vehicle through a pipeline with a control valve 52 of the adjustment device (first open the control valve, then introduce compressed air, and then the cylinder pushes the inverted U-shaped tube to lift and lower, thereby adjusting the discharge height).

[0038] According to one embodiment of the present invention, a conical ring 34 (a flow guiding sedimentation structure that allows fine particles to slide down the inclined plane back to the filter area) is provided in the liquid accumulation chamber 33 for settling particles using the principle of inclined plate sedimentation, and the bottom end of the conical ring 34 forms an annular opening 37 (a sediment return channel).

[0039] According to one embodiment of the present invention, the device further includes a cylindrical component 3 and a paddle component 1 (a rotating assembly for stirring and air-blowing unloading) rotatably mounted on the cylindrical component 3. The cylindrical component 3 includes a shell 35 (the main outer shell of the equipment, typically made of welded carbon steel or stainless steel). A top cover plate 30 (a sealing top cover) is fixedly provided on the upper end of the shell 35. A conical cylinder 31 (an inner cylinder supporting the filter structure) is fixedly installed inside the shell 35. A feed inlet 61 (material inlet), an air inlet 62 (air source interface for filter press), and an exhaust port 63 (exhaust balance port) are installed on the top cover plate 30. The feed inlet 61 is connected to or isolated from the material workshop through a pipe equipped with a feed control valve 55 (the feed valve is opened first, and then the material is injected for filtration). The air inlet 61 is connected to or isolated from the material workshop through a pipe equipped with a feed control valve 55. 2. The gas supply vehicle is connected or disconnected through a pipe with an intake valve (for pressurization during the filtration stage). The exhaust port 63 is connected or disconnected from the atmosphere through a pipe with an exhaust control valve 56 (exhausting during the initial filtration stage and closing to maintain pressure in the later stage). The lower end of the conical cylinder 31 is provided with an opening area 36 (liquid outflow area). A conical filter plate 32 is fixedly connected to the inner conical surface of the conical cylinder 31 to cover the opening area 36 (the filter medium support, usually covered with filter cloth or sintered metal mesh). The outer conical surface of the conical cylinder 31 and the inner wall of the shell 35 form a liquid collection chamber 33 (filtrate collection area). After the pipes containing the filtration intake valve 53 and the regulating device control valve 52 are closed, they are controlled by the main air valve 51 (centralized management of the air path to improve operational safety).

[0040] According to one embodiment of the present invention, a drive component 2 (gear motor or hydraulic motor) is fixedly mounted on the upper cover plate 30. The blade component 1 includes a rotary joint 11 (a dynamic sealing joint for supplying air to the rotating component). The upper end of the fixed portion of the rotary joint 11 is drively connected to the output end of the drive component 2, and the lower end of the fixed portion of the rotary joint 11 is fixedly connected to a main shaft 12 (central drive shaft). The main shaft 12 is connected to a blade support 14 (radial support arm) via a side shaft 13. An air nozzle 15 (purge nozzle) is fixedly mounted on the blade support 14. The rotating portion of the rotary joint 11 is connected to the air supply... The control box 10 is connected to the air source workshop (compressed air first enters the control box, then is sent to the rotating part through the rotary joint, and then sprayed out from the nozzle). The control box 10 can be a pneumatic control box in the existing technology (integrating pressure regulation, filtration and control functions), and a gas control valve 54 is installed in the control box 10. The main shaft 12, side shaft 13 and blade support 14 are all formed with channels (internal air passages, usually drilled) for guiding the airflow in the rotary joint 11 to the nozzle 15. The range of air jets from the nozzle 15 on the conical filter plate 32 is intersecting or complementary to form a complete purging surface (ensuring that there are no dead corners on the surface of the filter plate for unloading). The lower end of the conical cylinder 31 is fixedly connected to a discharge port 66 (solid filter cake outlet) extending to the outside. The discharge port 66 is used to discharge filter cake to the solid product material workshop (air blowing unloading is completed first, then the discharge valve is opened, and then the filter cake falls automatically). The discharge port 66 is equipped with an automatic discharge valve 510 (a normally closed pneumatic or electric valve to prevent leakage). Mother liquor outlet 2 64 is connected to the mother liquor truck through a pipe with a mother liquor U-tube discharge valve 57 (controlling the switch of the inverted U-shaped tube discharge path). Mother liquor outlet 1 65 is connected to the mother liquor truck through a pipe with a mother liquor discharge valve 58 (used for emergency emptying or cleaning discharge); the mother liquor outlet is connected to the air source workshop through a pipe with a backflush air inlet valve 59 (first close the discharge valve, then open the backflush valve, and then compressed air backflush the filter disc to achieve regeneration). The pneumatic lifting equipment is a telescopic cylinder (compact structure, stable thrust, commonly used in industrial automation lifting scenarios). The core working principle of the process-controlled air-blown unloading filter lies in the integration of siphon-assisted dynamic pressure regulation and rotary pneumatic scraper technology to achieve precise and optimized control of the entire solid-liquid separation process. The specific process is as follows: Filtration preparation and feeding: The suspension enters the sealed working chamber of the conical cylinder 31 through the feed inlet 61. Under the initial pump pressure, the liquid passes through the filter disc and enters the outer liquid collection chamber 33, while the solids are trapped to form a filter cake. The inverted conical ring 34 structure of the liquid collection chamber 33 can utilize the principle of inclined plate sedimentation to quickly capture and separate the fine particles that "run away" in the initial stage, and discharge the turbid liquid through the bottom mother liquor outlet 65 for recovery.

[0041] After entering the main filtration stage, the operation can switch the drainage mode according to process requirements. A key innovation lies in the use of a height-adjustable inverted U-shaped pipe 41 for drainage: the height difference H between the siphon outlet and the liquid level in the collection chamber 33 can be dynamically changed by adjusting the pneumatic lifting device. This siphon force, combined with the positive pressure of the compressed gas introduced through the air inlet 62, constitutes a programmable adjustable total filtration driving force. In the feeding / washing stage, H is increased to reduce ΔP and flow rate, promoting uniform filter cake formation or improving washing efficiency; in the main filtration / drying stage, H is decreased to increase ΔP and flow rate, increasing throughput and obtaining a filter cake with lower moisture content. After filtration, the equipment employs a unique non-contact unloading system. First, the backflush valve can be opened to introduce gas from the back of the filter disc to loosen the filter cake. Subsequently, the transmission components are activated to rotate the paddle support 14, and the air path is opened, allowing compressed gas to be delivered through the hollow main shaft 12, side shaft 13, and support to the evenly distributed air nozzles 15, forming a rotating "air scraper" covering the entire conical filter disc 32 inverted U-shaped tube 41, completely peeling off the filter cake and discharging it from the bottom discharge port 66. Through siphon pressure regulation, the filtration driving force is intelligently matched with each process stage, and through the pneumatic scraper, the filter disc is cleaned non-destructively and efficiently, forming a precision solid-liquid separation solution integrating anti-material spillage, adaptive filtration, efficient washing, powerful pressing and drying, and clean unloading.

[0042] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0043] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

Claims

1. A friction-resistant stirring system for sensitive materials, characterized in that, The system includes a liquid seal seat (A11) installed on the top of the tank body (A01). The liquid seal seat (A11) has a sleeve-shaped structure with an open top. The bottom of the liquid seal seat (A11) has an insertion hole (11C) for the stirring shaft (A21) to pass through. The diameter of the insertion hole (11C) is larger than the diameter of the stirring shaft (A21). The liquid seal seat (A11) includes an outer baffle (11A) and an inner baffle (11B) arranged coaxially. There is a liquid seal annular cavity (11D) between the inner baffle (11A) and the outer baffle (11B) for the injection of sealing medium. A liquid seal barrel (A23) with an open bottom is coaxially fixed on the stirring shaft (A21). The opening of the liquid seal barrel (A23) is inserted downward into the liquid seal annular cavity (11D), and the opening of the liquid seal barrel (A23) is located below the liquid surface of the liquid seal annular cavity (11D).

2. The sensitive material anti-friction stirring system according to claim 1, characterized in that, The replenishment pipe (11F) draws the medium from the tank (A01) and replenishes it into the liquid seal ring cavity (11D). A level gauge (11G) for measuring the liquid level in the liquid seal ring cavity (11D) is also installed on the liquid seal seat (A11). While the stirring shaft (A21) moves up and down in the vertical direction, the replenishment pipe (11F) replenishes the medium into the liquid seal ring cavity (11D) so that the opening of the liquid seal bucket (A23) is always below the liquid level in the liquid seal ring cavity (11D).

3. The sensitive material anti-friction stirring system according to claim 1, characterized in that, The liquid seal tank (A23) includes a liquid seal ring (A231) arranged coaxially with the stirring shaft (A21). The liquid seal ring (A231) is bolted to the stirring shaft (A21) by locking bolts (A233) arranged radially. An annular liquid baffle (A232) is coaxially fixed below the liquid seal ring (A231). There is a gap between the body of the liquid baffle (A232) and the inner baffle (11B) and the outer baffle (11A).

4. The sensitive material anti-friction stirring system according to claim 1, characterized in that, The liquid seal seat (A11) is fixed to the tank body (A01) by bolts. The tops of the outer baffle (11A) and the inner baffle (11B) extend to the outside of the tank body (A01). A sealing ring is installed at the contact surface between the liquid seal ring (A231) and the stirring shaft (A21), and a sealing ring is installed at the contact surface between the liquid seal seat (A11) and the tank body (A01).

5. A reaction washing, clarification, and concentration machine, characterized in that, The system includes a sensitive material anti-friction stirring system as described in any one of claims 1 to 4, wherein a filter plate (A7) is installed inside the tank (A01), the filter plate (A7) divides the tank cavity of the tank (A01) into an upper working chamber and a lower mother liquid chamber, the stirring shaft (A21) extends from the working chamber through the liquid seal seat (A11) to the outside of the tank (A01), and is coaxially fixed with the motor shaft of the stirring motor (A2), the tank (A01) is equipped with a lifting system (A3) to drive the stirring motor (A2) and the stirring shaft (A21) to produce lifting action; a mother liquid discharge pipe (A8) communicating with the mother liquid chamber is provided at the bottom of the tank (A01).

6. A reaction washing, clarification, and concentration machine according to claim 5, characterized in that, A slurry suction pipe (A6) is installed on the side wall of the tank (A01) and extends into the working chamber, avoiding the rotation path of the blade (A22). The suction port of the slurry suction pipe (A6) extends to the center of the filter disc (A7) and there is a gap between it and the surface of the filter disc (7). The slurry suction pipe (A6) is connected to a peristaltic pump to suction the slurry that has been washed. A control valve and a pressure sensor are installed at the outlet of the slurry suction pipe (A6). After the slurry is suctioned, the slurry suction pipe (A6) is delivered to the process-controlled air-blown unloading filter.

7. A reaction washing clarification and concentration machine according to claim 5, characterized in that, A material inlet pipe (A4) is installed on the side wall of the tank (A01). A flow meter and a control valve are installed at the inlet of the material inlet pipe (A4). The material inlet pipe (A4) is C-shaped, and the outlet of the material inlet pipe (A4) is arranged in close contact with the inner wall of the tank (A01).

8. A reaction washing, clarification, and concentration machine according to claim 5, characterized in that, A radar level gauge is installed on the tank (A01) to monitor the liquid level in the tank (A01) in real time. A sight glass is also installed on the tank (A01) for visual inspection of the condition inside the tank (A01).

9. A reaction washing, clarification, and concentration machine according to claim 5, characterized in that, The impeller (A22) on the stirring shaft (A21) includes an S-shaped long impeller and an S-shaped short impeller. The blades of both the long and short impellers are arranged vertically, and the axes of symmetry of the long and short impellers coincide with the axis of the stirring shaft (A21). The length directions of the long and short impellers after installation are perpendicular to each other. The stirring shaft (A21) and the impeller (A22) are welded together to form an integral design.

10. A reaction washing, clarification, and concentrating machine according to claim 5, characterized in that, The tank (A01) is equipped with a horizontally arranged washing spray pipe. The height of the washing spray pipe is above the bottom surface of the liquid seal seat (A11). Washing spray balls (A5) are evenly arranged on the washing spray pipe. The spraying direction of the washing spray balls (A5) is towards the filter plate (A7).

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