Resin cleaning tank with thorough cleaning and middle extraction functions and resin cleaning method

Abstract

The invention discloses a resin cleaning tank capable of achieving thorough cleaning and middle extraction and a resin cleaning method, and belongs to the technical field of resin cleaning equipment. The resin cleaning tank comprises a cleaning tank body, a middle resin extraction pipe, a concave porous plate, a piping system device, a pneumatic negative pressure material extraction assembly, an electric control intelligent monitoring assembly and an external medium regulation and control assembly. The concave porous plate can gather the resin at the center of the tank body to avoid accumulation at dead angles; the middle resin extraction pipe is arranged in the middle and is matched with the purging air nozzle group and the multiple anti-suction structures, so that the smooth extraction of the resin is realized and the material extraction assembly is protected; the piping system device forms a rotational flow gas-liquid field, and ultrasonic and temperature control are combined to achieve multi-physical-field collaborative cleaning. Air sources are uniformly supplied, and the structure is simplified; and an electric control system realizes double-index monitoring and automatic closed-loop control, and graded pollution discharge is free of residues. The device has the advantages of thorough cleaning, smooth material pumping, stable operation and simple and convenient operation and maintenance, and is suitable for resin regeneration cleaning scenes of chemical engineering, water treatment and the like.

Description

Technical Field

[0001] This invention relates to the field of resin cleaning equipment technology, specifically to a resin cleaning tank and resin cleaning method that thoroughly cleans and extracts resin intermediately. Background Technology

[0002] In industrial applications such as resin recycling and water treatment regeneration, resins adsorb large amounts of suspended solids, colloidal impurities, and contaminants after use. These must be cleaned and purified using specialized cleaning tanks to restore the resin's adsorption and exchange properties and ensure normal subsequent use. Existing conventional resin cleaning tanks suffer from the following core technical deficiencies in practical applications, and these deficiencies cannot be effectively addressed by a single structural solution:

[0003] Firstly, the tank lacks a suitable resin-bearing and orderly arrangement structure, causing resin to scatter randomly and accumulate in dead corners of the tank walls. This not only prevents the cleaning medium from fully contacting the resin, resulting in poor cleaning and incomplete impurity removal, but also causes localized residues and uneven extraction during resin extraction, affecting resin recovery efficiency. Secondly, the extraction pipeline layout is unreasonable, often employing bottom-to-top or top-to-bottom suction methods without a centrally directional extraction structure. The extraction process is easily affected by accumulated material and flow field interference within the tank, leading to easy blockage of the extraction port and insufficient extraction smoothness. Thirdly, the internal media conveying, cleaning, and sewage discharge pipelines are haphazardly laid out without a regular connection and layout structure. Residual waste liquid cannot be effectively drained from the tank, and accumulated liquid easily breeds impurities and clogs the pipelines. At the same time, the various functional components within the tank are loosely connected, preventing the cleaning, extraction, and media conveying processes from coordinating in an orderly manner, resulting in poor equipment stability and inconvenient maintenance.

[0004] To address the aforementioned issues, existing technologies can only make partial structural improvements and cannot simultaneously solve problems such as messy resin arrangement, poor material extraction and easy blockage, chaotic pipeline layout, poor residual liquid drainage, and poor operational coordination through core basic structures. This results in low efficiency of resin cleaning and material extraction operations, making it difficult to meet the needs of large-scale industrial use. Summary of the Invention

[0005] The purpose of this invention is to provide a resin cleaning tank and cleaning method that thoroughly cleans and extracts resin in the middle, so as to solve the above-mentioned defects.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention proposes a resin cleaning tank for thorough cleaning and intermediate extraction, characterized by comprising a cleaning tank body, an intermediate resin extraction pipe, a concave perforated plate, a piping system, a pneumatic negative pressure extraction assembly, an electronically controlled intelligent monitoring assembly, and an external media control assembly. The cleaning tank body includes a vertically arranged cylindrical section, with a bottom flat cover at the lower end of the section. An air inlet and a drain outlet are located at the center of the bottom flat cover. An exhaust and water inlet are located at the top of the cleaning tank body. Two symmetrically arranged equipment flanges are fixed to the lower part of the inner wall of the cylindrical section. The concave perforated plate is a circular perforated plate with a downward-facing center, horizontally clamped and fixed between the two equipment flanges, with its concave center coinciding with the axis of the cylindrical section. A double-sided flange is fixed to the lower part of the outer wall of the cylindrical section. The piping system is located directly below the concave perforated plate and communicates with the inner cavity of the double-sided flange. The intermediate resin extraction pipe is vertically coaxial. The external medium control component is located at the center of the cleaning tank body, extending from its lower end to above the concave perforated plate, and its upper end protrudes from the top of the cleaning tank body and is sealed to the pneumatic negative pressure material extraction component. The external medium control component is located on the outside of the cylindrical section and is sealed to the double-sided flange of the cylindrical section. The branch pipes of the external medium control component are respectively connected to the air inlet and drain outlet and the exhaust and water inlet, which are used to deliver temperature-controlled and filtered cleaning water and high-pressure air source into the cleaning tank body. The electronically controlled intelligent monitoring component is electrically connected to the external medium control component, the piping system device, and the concave perforated plate to form a closed-loop control structure with multi-physical field coordination. The power air source of the pneumatic negative pressure material extraction component is provided by the air inlet pipe of the external medium control component. The air inlet pipe is connected to an industrial oil-free compressed air compressor or the factory compressed air pipeline network. The branch pipes of the air inlet pipe are respectively equipped with independent pressure regulating valves, filters and check valves to meet the pressure and cleanliness requirements of different branches.

[0008] Preferably, the upper surface of the concave porous plate is evenly provided with a plurality of anti-clogging water distribution caps, the lower ends of which are sealed and inserted into the through holes of the concave porous plate and connected to the lower side of the concave porous plate; the lower surface of the concave porous plate is fixed with an array of ultrasonic vibration components, the working frequency range of which is 20kHz-100kHz, and the outer side of which is wrapped with a thermal control insulation layer; a plurality of radially evenly distributed temperature sensing probes are embedded inside the concave porous plate, the detection ends of which face the concave center of the concave porous plate; the ultrasonic vibration components and the temperature sensing probes are all electrically connected to the electronically controlled intelligent monitoring components.

[0009] Preferably, the piping system includes a horizontally arranged main water pipe and several branch water pipes. One end of the main water pipe is fixedly connected to and communicates with the inner flange face of the double-sided flange of the cylindrical section, and the other end is fixed with a main pipe plug plate. The end of the main water pipe with the main pipe plug plate is welded and fixed to the inner wall of the cylindrical section through a main water pipe fixing component. Several parallel branch water pipes are evenly welded to the lower side of the main water pipe, and the pipe wall of the branch water pipe is connected to the interior of the main water pipe. Both ends of the branch water pipe are fixed with branch pipe plug plates. The pipe wall of the branch water pipe is evenly provided with several swirl water and air distribution holes that are inclined upward and face the axis of the cylindrical section. The diameter of the swirl water and air distribution holes is 3mm-8mm.

[0010] Preferably, the lower end of the intermediate resin extraction pipe is a funnel-shaped extraction port. A plurality of purge nozzles are arranged around the extraction port, with the purge nozzles venting downwards towards the center of the extraction port. The purge nozzles are connected to a branch pipe of the air inlet via a pre-embedded high-pressure purge branch pipe inside the intermediate resin extraction pipe, and are used to purge and prevent resin blockage of the extraction port. A pneumatic interface is provided on the upper wall of the intermediate resin extraction pipe, and the outer end of the pneumatic interface is tightly connected to the pneumatic negative pressure extraction assembly. The pneumatic interface is sealed, with a gas-material separation anti-suction baffle fixed to the inner wall of the intermediate resin extraction tube on one side of the inner end. The gas-material separation anti-suction baffle blocks the inner port of the pneumatic interface upwards. The upper end and both sides of the gas-material separation anti-suction baffle are sealed and fixed to the inner wall of the intermediate resin extraction tube. A filter layer is provided on the rear side of the gas-material separation anti-suction baffle. A negative pressure unidirectional conduction structure is installed in the inner port of the pneumatic interface. The conduction direction of the negative pressure unidirectional conduction structure is from the inner cavity of the intermediate resin extraction tube to the pneumatic negative pressure material extraction component.

[0011] Preferably, the pneumatic negative pressure material extraction assembly includes a negative pressure ejector, a pneumatic connecting pipe, a pneumatic regulating valve, and a gas pressure stabilizing tank; one end of the pneumatic connecting pipe is sealed to the pneumatic interface of the intermediate resin extraction pipe, and the other end is connected to the negative pressure end of the negative pressure ejector; the pneumatic regulating valve is connected in series on the pneumatic connecting pipe; the high-pressure power inlet end of the negative pressure ejector is connected to a branch pipe of the inlet pipe through an inlet pipe; the gas pressure stabilizing tank is connected in series on the inlet pipe, and its volume is 5L-20L, used to stabilize the pressure fluctuation of the material extraction gas path; a stable negative pressure field can be formed by relying on the negative pressure ejector and utilizing the gas Venturi effect.

[0012] Preferably, the electronically controlled intelligent monitoring component includes a liquid level sensor, a pressure sensor, a turbidity sensor, an integrated control module, an electronically controlled actuator valve assembly, and a photosensitive detection component. The liquid level sensor is installed on the inner wall of the cylindrical section, the pressure sensor is installed on the outer air inlet end of the double-sided flange of the cylindrical section, and the turbidity sensor is installed at the vent port located at a low position on the side wall of the cylindrical section. The liquid level sensor, pressure sensor, and turbidity sensor are all electrically connected to the integrated control module via shielded signal cables, and the integrated control module is linked with the electronically controlled actuator valve assembly. The photosensitive detection component includes a laser emitting probe and a laser receiving probe. The head is symmetrically embedded in the upper part of the cylindrical section, directly above the concave perforated plate, within the cleaning liquid level range. The two are arranged coaxially and horizontally opposite each other, allowing the light path to penetrate the core area of ​​resin cleaning inside the tank without being blocked by the concave perforated plate. Both the laser emitting probe and the laser receiving probe adopt a waterproof and anti-fouling sealing structure with an IP67 sealing rating and are electrically connected to the integrated control module through shielded signal cables. The start-stop sequence of the photosensitive detection component is controlled by the integrated control module, activating only when the flow field inside the tank is stable and there is no bubble disturbance in the later stage of cleaning. It can accurately collect the light transmission signal of resin cleaning, and together with the turbidity sensor, achieve dual accurate determination of the cleaning status.

[0013] Preferably, the external medium control assembly includes a water inlet pipe, an air inlet pipe, and an exhaust pipe. A heat exchange sleeve is coaxially fitted around the outside of the water inlet pipe. The heat exchange medium inside the heat exchange sleeve is heat transfer oil or cooling water. The water inlet pipe is a double-ended branch, with one end connected to the double-sided flange of the cylindrical section and connected to the piping system, and the other end connected to the exhaust water inlet at the top of the cleaning tank body. The air inlet pipe is used to introduce clean compressed air. A gas filter dehumidifier and a flow metering valve are connected in series on the pipe, and the air inlet pipe branches off into at least two branch pipes, which are respectively connected to the high-pressure purging branch of the purging air nozzle assembly. The air inlet pipes of the tube and negative pressure ejector are equipped with independent pressure regulating valves, filters and check valves on each branch pipe; the air inlet pipe is a double-pass branch, one end of which connects to the double-sided flange of the cylindrical section and is connected to the piping system, and the other end connects to the air inlet and drain outlet at the center of the flat cover at the bottom of the cleaning tank body; one end of the drain pipe connects to the double-sided flange of the cylindrical section and is connected to the piping system, and the other end is connected to the wastewater collection equipment; each of the water inlet pipe, air inlet pipe and drain pipe is equipped with an independent branch valve of the electrically controlled actuator valve group, which is electrically connected to the integrated control module to realize the automated regulation and transportation of multiple media.

[0014] Preferably, the air inlet and drain outlet are through-type pipes, with the inner wall of the pipe flush with the upper surface of the bottom flat cover, and the diameter of the air inlet and drain outlet is DN50-DN100; the exhaust water inlet is a through-type pipe, with its installation height 100mm-200mm higher than the maximum cleaning liquid level inside the cleaning tank body, and the diameter of the exhaust water inlet is DN80-DN100.

[0015] Preferably, a resin cleaning method based on a thoroughly cleaned and intermediately withdrawn resin cleaning tank includes the following steps:

[0016] S1. Media Injection and Liquid Level Control: The resin to be cleaned is fed into the tank through the resin inlet at the top of the tank body. The resin is distributed in the central area of ​​the tank body under the gathering effect of the concave perforated plate. The external media control component injects cleaning water with temperature control by heat exchange sleeve into the tank body through two branches of the water inlet pipe, through the exhaust water inlet and the piping system device respectively. At the same time, high-pressure air source treated by gas filter dehumidifier is sent into the tank body through two branches of the air inlet pipe, through the air inlet and drain outlet and the piping system device respectively. The electronic control intelligent monitoring component monitors the liquid level in real time through the liquid level sensor and stably controls the liquid level in the tank at 50mm-100mm above the concave perforated plate. The exhaust water inlet simultaneously discharges redundant air in the tank.

[0017] S2. Multi-physical field collaborative cleaning: The integrated control module of the electronically controlled intelligent monitoring component starts the ultrasonic vibration component on the lower side of the concave porous plate, which, together with the swirling water and air distribution holes of the piping system, forms a gas-liquid swirling field. The temperature sensor probe collects the cleaning temperature in real time and feeds it back to the integrated control module, which adjusts the flow rate of the heat exchange medium in the heat exchange sleeve to maintain constant temperature cleaning, thereby achieving multi-physical field collaborative stripping of resin impurities.

[0018] S3. Dual-indicator monitoring of cleaning status: When the flow field inside the tank is stable and there are no large number of bubbles in the later stage of cleaning, the integrated control module activates the photosensitive detection component. The laser emitting probe and the laser receiving probe collect the light transmittance signal inside the tank. At the same time, the turbidity sensor collects the turbidity signal of the wastewater. The two types of signals are transmitted to the integrated control module simultaneously to complete the dual monitoring of the cleaning status.

[0019] S4. Standard Determination and Intermediate Negative Pressure Extraction: The integrated control module compares and determines the transmittance and turbidity signals. When the transmittance meets the standard and the turbidity drops to the preset threshold, the cleaning is deemed qualified, and the media delivery branch of the external media control component is immediately shut down. The pneumatic negative pressure extraction component is activated. Relying on the clean compressed air provided by the air inlet pipe, a stable negative pressure field is formed in the intermediate resin extraction pipe through the negative pressure ejector. The air-material separation anti-suction baffle, filter layer and negative pressure unidirectional conduction structure provide multiple barriers to prevent resin back suction. At the same time, the purge nozzle group is opened to purge the loose resin with the compressed air provided by the air inlet pipe. The resin is then directionally extracted from the intermediate resin extraction pipe through the extraction port.

[0020] S5. Thoroughly drain the wastewater in stages: After the resin is pumped out, first open the air inlet and drain outlet to discharge the residual cleaning wastewater in the tank, then open the drain pipe to discharge the residual liquid in the piping system, so as to achieve thorough drainage of the tank cavity and piping in stages. After the drainage is completed, close all valves to complete the single cleaning and pumping process.

[0021] Preferably, in step S2, the integrated control module adjusts the flow rate of the heat exchange medium in the heat exchange sleeve based on the detection data of the temperature sensor probe, and maintains the cleaning temperature stably within the suitable range of 25℃-60℃. The vibration frequency of the ultrasonic vibration component is adaptively adjusted according to the cleaning process. In step S3, the photosensitive detection component is activated only after the gas-liquid disturbance in the tank stops. The integrated control module uses a light transmittance ≥90% and turbidity ≤5NTU as the cleaning standard judgment condition. In step S4, the pneumatic negative pressure material extraction component stabilizes the air source pressure provided by the air inlet pipe through the gas pressure stabilizing tank. The negative pressure unidirectional conduction structure only allows airflow from the intermediate resin extraction pipe to the negative pressure ejector. The gas-material separation anti-suction baffle completely blocks resin particles from entering the pneumatic negative pressure material extraction component. The material extraction process and the cleaning process are executed independently and at different times. During the material extraction, the piping system device stops operating to avoid flow field interference with resin extraction. In step S5, after the evacuation operation is completed, a high-pressure air source can be introduced through the air inlet and outlet to backflush and clean the piping system device and the concave perforated plate.

[0022] The beneficial effects of this invention are as follows:

[0023] (1) The resin cleaning tank of the present invention thoroughly cleans and extracts resin in the middle. By setting a concave porous plate with a central depression in the body of the cleaning tank and cooperating with symmetrical equipment flanges to achieve stable installation, it can effectively regulate the resin arrangement in the tank and gather the resin in the central area of ​​the tank, avoiding the resin from scattering and accumulating in the dead corners of the tank wall. This ensures that the cleaning medium can fully contact the resin, improves the thoroughness of cleaning, and solves the problems of uneven resin extraction and local residue, thus consolidating the foundation for resin cleaning and recycling.

[0024] (2) The resin cleaning tank of the present invention thoroughly cleans and extracts resin from the middle, and adopts a vertically coaxially arranged intermediate resin extraction pipe to construct a centrally oriented extraction structure, avoiding dead corners and material accumulation areas of the tank wall, and extracting resin from the center of the tank body. This completely solves the problems of easy blockage and poor extraction of traditional bottom and top extraction, ensuring that the resin extraction process is smooth and efficient, and there is no risk of material accumulation and blockage.

[0025] (3) The resin cleaning tank of the present invention thoroughly cleans and extracts the middle section. Through the orderly connection of the pipe system device with the double-sided flange of the cylindrical section, and the orderly connection of the branch pipe of the external medium control component with the air inlet and drain outlet and the exhaust water inlet, the pipeline layout of the tank body is optimized, realizing the orderly transportation and graded sewage discharge of cleaning water and high-pressure air source, which facilitates the effective emptying of residual liquid in the tank and reduces the growth of accumulated liquid impurities; at the same time, the functional components are connected in an orderly manner, and the cleaning, material extraction and medium transportation links can be coordinated in an orderly manner, improving the stability of equipment operation and reducing the difficulty of operation and maintenance.

[0026] (4) The resin cleaning tank of the present invention thoroughly cleans and extracts resin in the middle. It relies on the electrical connection structure of the electronic control intelligent monitoring component and each core component to form a basic closed-loop control architecture, realize the linkage control of each link of the equipment, and ensure the stable operation of the equipment without complex additional structure. The overall structure is simple and the layout is reasonable. It can solve the core technical pain points of the existing resin cleaning tank, facilitate production and processing and actual use, and is suitable for various resin cleaning and regeneration scenarios. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the resin cleaning tank of the present invention, which thoroughly cleans and extracts resin in the middle.

[0028] Figure 2 for Figure 1 Sectional view along the AA direction;

[0029] Figure 3 for Figure 1 Sectional view along the BB direction;

[0030] Figure 4 for Figure 3 A cross-sectional view along the CC direction;

[0031] Figure 5 for Figure 3 A cross-sectional view along the DD direction;

[0032] Figure 6 for Figure 1 Enlarged view of the structure at point E in the middle;

[0033] Figure 7 for Figure 1 Enlarged view of the structure at point F in the middle;

[0034] Figure 8 This is a connection framework diagram for the electronic control intelligent monitoring component.

[0035] The component names corresponding to each number in the diagram are as follows:

[0036] 1. Cleaning tank body; 11. Cylindrical section; 12. Bottom flat cover; 13. Equipment flange; 14. Cylindrical section double-sided flange; 15. Air inlet and drain outlet; 16. Exhaust and water inlet; 2. Intermediate resin extraction pipe; 21. Material extraction port; 22. Purge air nozzle assembly; 23. High-pressure purging branch pipe; 24. Filter layer; 25. Pneumatic interface; 26. Air-material separation anti-suction baffle; 27. Negative pressure unidirectional conduction structure; 3. Concave perforated plate; 31. Anti-clogging water distribution cap; 4. Piping system device; 41. Water distribution main pipe; 42. Water distribution branch pipe; 43. Water distribution main pipe fixing component; 44. Main pipe plug plate; 45. Branch pipe plug plate; 5. 51. Pneumatic negative pressure material extraction assembly; 52. Negative pressure ejector; 53. Pneumatic connecting pipe; 54. Pneumatic regulating valve; 55. Gas pressure stabilizing tank; 6. Air inlet pipe; 7. Electronically controlled intelligent monitoring assembly; 61. Liquid level sensor; 62. Air pressure sensor; 63. Turbidity sensor; 64. Integrated control module; 65. Electronically controlled actuator valve assembly; 66. Photosensitive detection assembly; 661. Laser emitting probe; 662. Laser receiving probe; 7. External medium control assembly; 71. Water inlet pipe; 72. Air inlet pipe; 73. Drain pipe; 74. Heat exchange sleeve; 75. Gas filter dehumidifier; 76. Flow metering valve. Detailed Implementation

[0037] The present invention will be further described below with reference to the embodiments. It should be noted that these are merely examples and descriptions of the inventive concept. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the inventive concept or exceed the scope defined in the claims, they should all be considered to fall within the protection scope of the present invention.

[0038] Example 1:

[0039] like Figure 1 As shown, this embodiment discloses a resin cleaning tank that thoroughly cleans and extracts resin from the middle. The overall structure is a vertical stainless steel tank, including a cleaning tank body 1, an intermediate resin extraction pipe 2, a concave perforated plate 3, a piping system device 4, a pneumatic negative pressure material extraction component 5, an electronically controlled intelligent monitoring component 6, and an external medium control component 7.

[0040] The cylindrical section 11 of the cleaning tank body 1 is vertically arranged, with a bottom flat cover 12 sealed and welded at the lower end. An air inlet and drain outlet 15 is located in the center of the bottom flat cover 12, with a pipe diameter of DN80. The inner wall of the pipe inlet is flush with the upper surface of the bottom flat cover 12, eliminating any dead corners for liquid accumulation. An exhaust and water inlet 16 is located at the top of the cleaning tank body 1, with a pipe diameter of DN100. The installation height is 150mm higher than the maximum cleaning liquid level inside the tank, achieving both venting and preventing overflow of cleaning water. Two symmetrical equipment flanges 13 are welded to the lower middle part of the inner wall of the cylindrical section 11. A concave perforated plate 3 is clamped and fixed between the two equipment flanges 13. The concave design in the center gathers the resin in the central area of ​​the tank, preventing resin from scattering into dead corners on the tank wall. A double-sided flange 14 is welded to the outside of the cylindrical section 11. The piping system device 4 is located directly below the concave perforated plate 3. The water distribution header 41 is sealed and connected to the double-sided flange 14 of the cylindrical section, forming a closed air and water distribution channel, ensuring leak-free media transport.

[0041] A resin inlet is added to the upper outer wall of the cleaning tank body 1, near the top of the tank. The resin inlet adopts a quick-opening flange structure, with its axis set horizontally and connected to the inner cavity of the tank. Its installation height is higher than the maximum cleaning liquid level inside the cleaning tank body 1. It is used for the directional filling of the resin to be cleaned. After the resin enters the tank through the resin inlet, it is gathered in the central area of ​​the tank under the guidance of the concave structure of the concave porous plate 3, thus completing the resin feeding operation.

[0042] The intermediate resin extraction pipe 2 is vertically arranged along the center of the tank. The lower end of the funnel-shaped extraction port 21 is close to the concave perforated plate 3. The surrounding purge nozzle group 22 can purge the extraction port 21 in real time to prevent resin accumulation and blockage. The upper end extends out of the top of the tank and is sealed to the pneumatic negative pressure extraction component 5 through the pneumatic interface 25. The air-material separation anti-suction baffle 26, the filter plug 24 and the negative pressure unidirectional conduction structure 27 provide triple protection to prevent resin particles from being sucked into the negative pressure ejector 51 and ensure the normal operation of the extraction component.

[0043] The water inlet pipe 71 and air inlet pipe 72 of the external media control component 7 are both dual-way branches, respectively connecting to the piping system device 4, the exhaust water inlet 16, and the air inlet sewage outlet 15. The pipeline layout is neat and there is no cross interference. The drain pipe 73 is separately connected to the piping system device 4 to realize the separate drainage of residual liquid in the piping. The electronically controlled intelligent monitoring component 6 integrates liquid level, air pressure, turbidity, and light sensing monitoring functions, and links with the electronically controlled actuator valve group 65 to realize the automated closed-loop control of media transportation, cleaning, material extraction, and sewage discharge.

[0044] Example 2:

[0045] Combined with appendix Figure 1-8 The following describes a resin cleaning tank for thorough cleaning and intermediate extraction according to the present invention:

[0046] As attached Figure 1 Appendix Figure 2As shown, the cleaning tank body 1 is the main load-bearing structure of the equipment, including a vertically arranged cylindrical section 11. The cylindrical section 11 adopts a cylindrical pressure-resistant cylinder, and the bottom end is sealed and fixed with a bottom flat cover 12. The bottom flat cover 12 and the cylindrical section 11 are connected by welding or flange sealing to ensure the airtightness of the tank. An air inlet and drain outlet 15 is opened at the center of the bottom flat cover 12. The air inlet and drain outlet 15 is a through-type pipe, and the inner wall of the pipe is flush with the upper plate surface of the bottom flat cover 12, with no dead corners for liquid accumulation. It has the dual functions of high-pressure air intake and bottom drain. An exhaust and water inlet 16 is opened at the top of the cleaning tank body 1. The exhaust and water inlet 16 penetrates the top sealing plate of the tank body and is installed at a height higher than the maximum cleaning liquid level in the tank. It is used to inject cleaning water and to discharge redundant air in the tank to maintain the pressure balance in the tank.

[0047] A resin inlet is added to the upper outer wall of the cleaning tank body 1, near the top of the tank. The resin inlet is a horizontal through-type pipe with a flange seal or quick-opening seal structure. The installation height of the resin inlet is more than 100mm higher than the maximum cleaning liquid level inside the cleaning tank body 1 to prevent the medium from overflowing from the inlet during the cleaning process. The resin to be cleaned is directionally fed into the tank through the resin inlet. Under the guidance of gravity and the concave porous plate 3, it automatically gathers in the central area of ​​the tank, completing the orderly filling of the resin.

[0048] Two symmetrically arranged equipment flanges 13 are fixed in the lower middle part of the inner wall of cylindrical section 11. The two equipment flanges 13 are coaxially arranged and appropriately spaced. The concave perforated plate 3 is a circular perforated plate with a downward-recessed center. The plate body is evenly opened with water and air perforations. It is horizontally clamped and fixed between the two equipment flanges 13. Its concave center coincides with the axis of cylindrical section 11. Relying on the concave structure, the resin to be cleaned can be gathered in the central area of ​​the tank body, avoiding the resin from falling into the dead corner of the tank wall. A cylindrical section double-sided flange 14 is fixed in the lower middle part of the outer wall of cylindrical section 11. The cylindrical section double-sided flange 14 penetrates the wall of cylindrical section 11 and has a sealing connection function on both the inner and outer sides. The piping system device 4 is located directly below the concave perforated plate 3 and is sealed and connected to the inner cavity of the cylindrical section double-sided flange 14, forming a closed gas and water distribution channel to realize the directional transportation of the medium.

[0049] As attached Figure 1 Appendix Figure 3 Appendix Figure 6As shown, the intermediate resin extraction tube 2 is vertically and coaxially inserted through the center of the cleaning tank body 1. The tube passes through the top sealing plate of the tank body and is sealed. The lower end extends above the concave porous plate 3, close to the center of the concavity, and the upper end passes through the top of the cleaning tank body 1 and is sealed to the pneumatic negative pressure material extraction assembly 5, forming a centrally oriented material extraction channel, which completely avoids the problem of material accumulation in the dead corners of the tank wall interfering with material extraction. The lower end of the intermediate resin extraction tube 2 is a funnel-shaped extraction port 21. The funnel-shaped design increases the extraction range and avoids resin accumulation and blockage. Several purge nozzles 22 are arranged around the periphery of the extraction port 21. The purge nozzles 22 are evenly distributed around the circumference of the extraction port 21, and the air outlet direction is inclined downward and towards the center of the extraction port 21, which can purge and loosen the resin at the extraction port 21 and prevent resin from blocking the tube.

[0050] like Figure 7 As shown (blue arrows indicate the direction of airflow, pink arrows indicate the direction of resin movement), the purge nozzle assembly 22 is connected to the branch pipe of the air inlet pipe 72 through the high-pressure purge branch pipe 23 pre-embedded inside the intermediate resin extraction pipe 2. The high-pressure purge branch pipe 23 is pre-embedded inside the pipe wall of the intermediate resin extraction pipe 2 and does not occupy the material extraction channel inside the pipe, so as to realize the synchronous operation of material extraction and purging. A pneumatic interface 25 is provided on the upper end of the intermediate resin extraction tube 2. The pneumatic interface 25 penetrates the tube body vertically, and its outer end is sealed to the pneumatic negative pressure extraction component 5. Its inner end extends into the tube. A gas-material separation anti-suction baffle 26 is fixed to the inner wall of the intermediate resin extraction tube 2 on one side of the inner end of the pneumatic interface 25. The gas-material separation anti-suction baffle 26 blocks the inner port of the pneumatic interface 25 upwards. Its upper end and both sides are sealed to the inner wall of the intermediate resin extraction tube 2, preventing resin from entering the pneumatic interface 25 through gaps. A filter plug 24 is provided on the rear side of the gas-material separation anti-suction baffle 26 to further filter small resin particles. A negative pressure unidirectional conduction structure 27 is installed in the inner port of the pneumatic interface 25. The conduction direction of the negative pressure unidirectional conduction structure 27 is from the inner cavity of the intermediate resin extraction tube 2 to the pneumatic negative pressure extraction component 5, allowing only unidirectional airflow and preventing resin from being sucked back into the pneumatic negative pressure extraction component 5. This triple protection ensures the safe operation of the extraction component.

[0051] As attached Figure 1 Appendix Figure 4As shown, the piping system 4 is located directly below the concave perforated plate 3, including a horizontally arranged water distribution main pipe 41 and several water distribution branch pipes 42. The water distribution main pipe 41 is arranged horizontally along the radial direction of the cylindrical section 11. One end is fixedly connected to and communicates with the inner flange face of the double-sided flange 14 of the cylindrical section, and the other end is fixed with a main pipe plug plate 44 to seal the pipe end and prevent medium leakage. The water distribution main pipe 41 with the main pipe plug plate 44 is welded and fixed to the inner wall of the cylindrical section 11 through a water distribution main pipe fixing component 43 to ensure that the water distribution main pipe 41 is installed firmly and is not displaced by the impact of the gas-liquid flow field. Several parallel water branch pipes 42 are evenly welded to the lower side of the water distribution main pipe 41, and the pipe wall of the water distribution branch pipe 42 is connected to the interior of the water distribution main pipe 41 to realize the diversion and transportation of the medium. Both ends of the water distribution branch pipe 42 are fixed with branch pipe plugs 45 to seal the pipe ends. The pipe wall of the water distribution branch pipe 42 is evenly provided with several swirling water and air distribution holes that are inclined upward and facing the axis of the cylinder section 11. The diameter of the swirling water and air distribution holes is 3mm-8mm. The medium is sprayed out through the inclined holes, which can form a swirling gas-liquid field in the tank, enhance the cleaning effect, and improve the efficiency of impurity removal.

[0052] As attached Figure 1 Appendix Figure 7 As shown, the pneumatic negative pressure material extraction assembly 5 is the core of the material extraction power, including a negative pressure ejector 51, a pneumatic connecting pipe 52, a pneumatic regulating valve 53, and a gas pressure stabilizing tank 54. One end of the pneumatic connecting pipe 52 is sealed to the pneumatic interface 25 of the intermediate resin extraction pipe 2, and the other end is connected to the negative pressure end of the negative pressure ejector 51. The pneumatic regulating valve 53 is connected in series with the pneumatic connecting pipe 52 to adjust the negative pressure and adapt to different resin extraction requirements. The high-pressure power air inlet of the negative pressure ejector 51 is connected to the branch pipe of the air inlet pipe 72 through the air inlet pipe 55, integrating and sharing the air source of the air inlet pipe 72, simplifying the equipment structure; the gas pressure stabilizing tank 54 is connected in series on the air inlet pipe 55, and its volume is 5L-20L, which is used to buffer the pressure fluctuation of the gas source and ensure the stability of the negative pressure field. Relying on the negative pressure ejector 51 and utilizing the gas Venturi effect, when the high-pressure airflow flows through at high speed, a stable negative pressure field can be formed in the pneumatic connecting pipe 52, thereby driving the formation of negative pressure in the intermediate resin extraction pipe 2 to realize resin suction.

[0053] As attached Figure 1 Appendix Figure 8As shown, the electronically controlled intelligent monitoring component 6 is used to realize automated equipment management and control, including a liquid level sensor 61, a pressure sensor 62, a turbidity sensor 63, an integrated control module 64, an electronically controlled actuator valve group 65, and a light-sensing detection component 66. The liquid level sensor 61 is installed on the inner wall of the cylindrical section 11 to monitor the cleaning liquid level in the tank in real time and stabilize the liquid level within the set range; the pressure sensor 62 is installed on the outer air inlet end of the double-sided flange 14 of the cylindrical section to monitor the air pressure in the tank and prevent overpressure operation; the turbidity sensor 63 is installed at the vent located at a low position on the side wall of the cylindrical section 11 to monitor the turbidity of the cleaning wastewater in real time and determine the cleaning effect; the liquid level sensor 61, the pressure sensor 62, and the turbidity sensor 63 are all electrically connected to the integrated control module 64 through shielded signal cables, and the integrated control module 64 is linked with the electronically controlled actuator valve group 65 to realize signal acquisition and automatic valve control.

[0054] The photosensitive detection component 66 includes a laser emitting probe 661 and a laser receiving probe 662, which are symmetrically embedded in the upper part of the cylindrical section 11, directly above the concave porous plate 3, in the cleaning liquid level range. The two are arranged coaxially and horizontally facing each other, and the light path penetrates through the core area of ​​resin cleaning inside the tank without being blocked by the concave porous plate 3. Both the laser emitting probe 661 and the laser receiving probe 662 adopt a waterproof and dirt-proof sealing structure with a sealing rating of IP67, which is suitable for the humid conditions inside the tank. They are both electrically connected to the integrated control module 64 through shielded signal cables. The start-up and shutdown sequence of the photosensitive detection component 66 is controlled by the integrated control module 64. It is only activated in the later stage of cleaning when the flow field inside the tank is stable and there is no bubble disturbance. It can accurately collect the light transmission signal of resin cleaning. Together with the turbidity sensor 63, it can achieve dual accurate judgment of the cleaning status and avoid misjudgment by a single monitoring index.

[0055] As attached Figure 1 As shown, the external medium control component 7 is located on the outside of the cylindrical section 11 and is sealed to the double-sided flange 14 of the cylindrical section. The branch pipes of the external medium control component 7 are respectively connected to the air inlet and drain outlet 15 and the exhaust water inlet 16, which are used to deliver temperature-controlled and filtered cleaning water and high-pressure air source into the cleaning tank body 1. Specifically, it includes a water inlet pipe 71, an air inlet pipe 72 and an exhaust pipe 73. A heat exchange sleeve 74 is coaxially sleeved on the outside of the water inlet pipe 71. The heat exchange medium inside the heat exchange sleeve 74 is heat transfer oil or cooling water, which can regulate the temperature of the cleaning water to adapt to the cleaning temperature requirements of different resins. The water inlet pipe 71 is a double branch, one end of which is connected to the double-sided flange 14 of the cylindrical section and connected to the piping system device 4, and the other end is connected to the exhaust water inlet 16 at the top of the cleaning tank body 1, so as to realize the dual injection of cleaning water and improve the uniformity of water distribution.

[0056] The intake pipe 72 is used to introduce clean compressed air. A gas filter dehumidifier 75 and a flow metering valve 76 are connected in series on the pipe. The gas filter dehumidifier 75 can filter impurities and remove moisture from the air source to ensure the cleanliness of the air source. The flow metering valve 76 precisely controls the intake air volume. The intake pipe 72 branches off from at least two branch pipes, which are respectively connected to the high-pressure purging branch pipe 23 of the purging nozzle assembly 22 and the intake pipe 55 of the negative pressure ejector 51. Each branch pipe is equipped with an independent pressure regulating valve, filter and check valve to regulate the air pressure required for purging and material extraction, ensuring that the two air sources do not interfere with each other. The intake pipe 72 can be connected to an industrial oil-free compressed air compressor or the factory's compressed air network, without the need for a separate high-pressure air supply. The source simplifies the equipment structure; the air inlet pipe 72 is equipped with a double-pass branch, one end of which connects to the double-sided flange 14 of the cylindrical section and is connected to the piping system device 4, and the other end is connected to the air inlet and drain outlet 15 at the center of the flat cover 12 at the bottom of the cleaning tank body 1, so as to realize the dual-path delivery of high-pressure gas and enhance the gas-liquid cyclone cleaning effect; one end of the drain pipe 73 connects to the double-sided flange 14 of the cylindrical section and is connected to the piping system device 4, and the other end is connected to the wastewater collection device, so as to realize the separate drainage of residual liquid in the piping system device 4; independent branch valves of the electrically controlled actuator valve group 65 are installed on the water inlet pipe 71, air inlet pipe 72 and drain pipe 73, which are electrically connected to the integrated control module 64 to realize the automated regulation and delivery of multiple media.

[0057] The electronically controlled intelligent monitoring component 6 is electrically connected to the external medium control component 7, the piping system device 4, and the concave perforated plate 3, forming a closed-loop control structure with multi-physical field collaboration. The power source of the pneumatic negative pressure material extraction component 5 is provided by the air inlet pipe 72 of the external medium control component 7. The air inlet pipe 72 is connected to an industrial oil-free compressed air compressor or a factory compressed air pipeline network. The branch pipes of the air inlet pipe 72 are equipped with independent pressure regulating valves, filters, and check valves to meet the pressure and cleanliness requirements of different branches. This constitutes the complete technical solution of claim 1 and can solve all the technical problems in the background art.

[0058] The present invention provides a resin cleaning tank based on thorough cleaning and intermediate extraction, which achieves the following effects through structural design:

[0059] I. Neat arrangement of tank body and resin:

[0060] (1) Resin aggregation and cleaning coverage optimization: By referring to Figures 1 and 2, the concave porous plate 3 with the center recessed by the symmetrical equipment flange 13 on the inner wall of the cylinder section 11 can accurately aggregate the resin to be cleaned in the central area of ​​the tank, completely avoiding the resin from falling into the dead corner of the tank wall, so that the cleaning medium can fully contact the resin particles, solving the problems of messy resin arrangement, incomplete contact of cleaning medium, and incomplete removal of impurities in traditional tanks, and significantly improving the thoroughness of cleaning.

[0061] (2) No dead corners for liquid accumulation and dual-function pipe openings: The air inlet and drain outlet 15 in the center of the bottom flat cover 12 adopts a design where the inner wall of the pipe opening is flush with the plate surface, eliminating dead corners for liquid accumulation and simultaneously serving as both high-pressure air inlet and bottom drain, ensuring both the gas-liquid vortex cleaning effect and the complete emptying of waste liquid at the bottom of the tank; The exhaust water inlet 16 at the top is higher than the maximum cleaning liquid level, allowing air to be discharged from the tank simultaneously during water injection, maintaining pressure balance inside the tank and preventing overpressure or liquid overflow.

[0062] (3) Organized pipeline and closed transport: The double-sided flange 14 of the cylindrical section penetrates the wall of the cylindrical section 11, connecting the piping system device 4 with the external medium control component 7 to form a closed gas and water distribution channel, realizing the directional transport of the medium, solving the problems of messy pipelines, medium leakage and flow field disorder in traditional tanks, and improving the stability of equipment operation.

[0063] II. Intermediate material extraction and anti-blocking / anti-suction:

[0064] (1) Centralized directional material extraction and anti-clogging optimization: In conjunction with Figures 1, 3 and 6, the middle resin extraction pipe 2 is vertically and coaxially inserted in the center of the tank to form a centrally directional material extraction channel, which completely avoids the interference of material accumulation in the dead corner of the tank wall; the lower funnel-shaped extraction port 21 has an enlarged design to increase the extraction range, and with the surrounding blowing air nozzle group 22 blowing downward at an angle, the resin at the extraction port can be loosened in real time, solving the problem of easy clogging and interruption of material extraction in traditional material extraction methods, and the material extraction process is smooth and efficient.

[0065] (2) Triple anti-suction structure ensures safe material extraction: the air-material separation anti-suction baffle 26 blocks the pneumatic interface 25 upwards and is sealed and fixed to the pipe wall to prevent resin from entering from the gap; the rear filter plug 24 further filters small particles; the negative pressure unidirectional conduction structure 27 only allows airflow to flow to the material extraction component in one direction. The triple protection completely prevents resin from being sucked back into the pneumatic negative pressure material extraction component 5, avoids equipment damage, and extends the service life of the material extraction component.

[0066] (3) Pre-embedded branch pipe does not interfere with material extraction: The high-pressure purging branch pipe 23 is pre-embedded inside the pipe wall of the intermediate resin extraction pipe 2, which does not occupy the material extraction channel inside the pipe, and can realize the synchronous operation of material extraction and purging, thus improving the work efficiency.

[0067] III. Piping System and Cleaning Enhancement:

[0068] (1) Enhanced cleaning by swirling gas-liquid field: In conjunction with Figures 1 and 4, the water distribution branch pipes 42 of the piping system device 4 are evenly welded to the lower side of the water distribution main pipe 41. The medium is sprayed out obliquely upward toward the swirling water and gas distribution holes in the center of the tank, which can form a uniform swirling gas-liquid field in the tank. Combined with the ultrasonic vibration component, the multi-physical field works together to deeply peel off the impurities on the resin surface and in the gaps, solving the problem of incomplete impurity removal in traditional cleaning methods and improving the cleaning quality.

[0069] (2) Dual-path medium injection improves uniformity: Both the water inlet pipe 71 and the air inlet pipe 72 adopt a dual-path design, which respectively transports the medium through the exhaust water inlet 16 / air inlet and drain outlet 15 and the piping system device 4, so that the cleaning water and high-pressure gas are more evenly distributed in the tank, avoiding local cleaning blind spots and further enhancing the cleaning effect.

[0070] IV. Gas Source Integration and Structural Simplification:

[0071] (1) Air source integration simplifies equipment structure: In conjunction with Figures 1 and 7, the air sources of the pneumatic negative pressure material extraction component 5 and the purge nozzle group 22 are integrated into the air inlet pipe 72, which is connected to an industrial oil-free compressed air compressor or the factory compressed air pipeline network, reducing the number of equipment parts and lowering production and on-site deployment costs. At the same time, each branch pipeline is equipped with an independent pressure regulating valve, filter and check valve to ensure that the two air sources do not interfere with each other and adapt to different working conditions.

[0072] (2) Pressure stabilization and buffering improve the stability of material extraction: The gas pressure stabilizing tank 54 is connected in series with the air inlet pipe 55, which can buffer the pressure fluctuation of the gas source, ensure the stability of the negative pressure field formed by the negative pressure ejector 51, avoid poor material extraction or resin suction due to pressure fluctuation, and improve the reliability of the material extraction process.

[0073] V. Intelligent Monitoring and Automated Control:

[0074] (1) Closed-loop control enables automated operation: Combined with Figures 1 and 8, the electronically controlled intelligent monitoring component 6 integrates multi-dimensional monitoring of liquid level, air pressure, turbidity, and light, and links with the electronically controlled actuator valve group 65 to form a multi-physical field collaborative closed-loop control, which can automatically regulate liquid level, temperature, air pressure and media delivery without manual supervision, thereby improving the automation level and operation accuracy of the equipment.

[0075] (2) Dual indicator monitoring avoids misjudgment: The light sensing component 66 works in conjunction with the turbidity sensor 63 to achieve dual accurate judgment of the cleaning status. The light sensing is activated only when the flow field is stable, avoiding bubble interference, solving the problem of easy misjudgment by single turbidity monitoring, and improving the accuracy of the cleaning standard judgment.

[0076] VI. Sewage Discharge and Operation & Maintenance:

[0077] (1) Thorough and graded sewage discharge with no residue: Combined with Figure 1 and Figure 2, the air inlet and sewage outlet 15 and the drain pipe 73 realize graded sewage discharge of the tank cavity and piping system device 4. First, the waste liquid in the tank is discharged, and then the residual liquid in the piping is discharged, with no liquid accumulation and residue, avoiding the growth of impurities and pipeline blockage, reducing the equipment failure rate and maintenance difficulty.

[0078] (2) Backflushing to clear blockages and extend equipment life: After the evacuation operation, high-pressure air can be introduced through the air inlet and outlet 15 to backflush and clear blockages of the piping system device 4 and the concave perforated plate 3, so as to prevent blockage of the water permeable and air permeable holes and water distribution holes, and extend the service life of the equipment.

[0079] Example 3:

[0080] Based on the resin cleaning tank of Example 2, which involves thorough cleaning and intermediate extraction, this invention also discloses a resin cleaning method based on the resin cleaning tank of Example 2, which, in conjunction with the working principle of the equipment, specifically includes the following steps:

[0081] S1. Media Injection and Liquid Level Control:

[0082] The resin to be cleaned is fed into the tank through the resin inlet at the top of the tank body 1. The resin is distributed in the central area of ​​the tank body under the gathering effect of the concave porous plate 3. After feeding is completed, the resin inlet is sealed.

[0083] The external medium control component 7 injects cleaning water, temperature-controlled by the heat exchange sleeve 74, into the cleaning tank body 1 through two branches of the water inlet pipe 71, via the exhaust water inlet 16 and the piping system device 4 respectively. At the same time, it sends high-pressure air, treated by the gas filter dehumidifier 75, into the tank body 1 through two branches of the air inlet pipe 72, via the air inlet and drain outlet 15 and the piping system device 4 respectively. The electronic control intelligent monitoring component 6 monitors the liquid level in real time through the liquid level sensor 61, and stably controls the liquid level in the tank at 50mm-100mm above the concave perforated plate 3. The exhaust water inlet 16 simultaneously discharges redundant air from the tank to maintain the normal pressure balance inside the tank.

[0084] S2, Multi-physics field collaborative cleaning:

[0085] The integrated control module 64 of the electronically controlled intelligent monitoring component 6 activates the ultrasonic vibration component on the lower side of the concave porous plate 3, which, together with the swirling water and air distribution holes of the piping system device 4, forms a gas-liquid swirling flow field. The temperature sensor probe collects the cleaning temperature in real time and feeds it back to the integrated control module 64, which adjusts the flow rate of the heat exchange medium in the heat exchange sleeve 74 to maintain constant temperature cleaning. This achieves the synergistic effect of multiple physical fields, including ultrasonic vibration, gas-liquid swirling flow, and constant temperature control, to deeply peel off impurities from the resin surface and crevices, thereby improving the thoroughness of cleaning.

[0086] S3. Dual-indicator monitoring of cleaning status:

[0087] When the flow field inside the tank is stable and there are no large number of bubbles in the later stage of cleaning, the integrated control module 64 activates the photosensitive detection component 66. The laser emitting probe 661 and the laser receiving probe 662 collect the light transmittance signal inside the tank. At the same time, the turbidity sensor 63 collects the turbidity signal of the wastewater. The two types of signals are transmitted to the integrated control module 64 simultaneously to complete the dual monitoring of the cleaning status and improve the accuracy of the cleaning compliance determination.

[0088] S4. Standard assessment and intermediate negative pressure material extraction:

[0089] The integrated control module 64 compares and judges the transmittance and turbidity signals. When the transmittance meets the standard and the turbidity drops to the preset threshold, the cleaning is deemed qualified, and the media delivery branch of the external media control component 7 is shut down. The pneumatic negative pressure extraction component 5 is started. Relying on the clean compressed air provided by the air inlet pipe 72, a stable negative pressure field is formed in the intermediate resin extraction pipe 2 through the negative pressure ejector 51. The air-material separation anti-suction baffle 26, the filter plug 24 and the negative pressure unidirectional conduction structure 27 provide multiple barriers to the back suction of the resin. At the same time, the blowing nozzle group 22 is opened, and the compressed air provided by the air inlet pipe 72 is used to blow away the loose resin. The resin is directionally extracted from the intermediate resin extraction pipe 2 through the extraction port 21, realizing smooth and centered extraction.

[0090] S5. Thorough and graded sewage discharge:

[0091] After the resin is pumped out, first open the air inlet and drain outlet 15 to discharge the residual cleaning waste liquid in the tank, then open the drain pipe 73 to discharge the residual liquid in the piping system device 4, so as to achieve the staged and thorough emptying of the tank cavity and piping, with no liquid residue. After the emptying is completed, close all valves to complete the single cleaning and material pumping process.

[0092] This invention also discloses a resin cleaning method based on a thoroughly cleaned and intermediately extracted resin cleaning tank, which has the following advantages:

[0093] (1) Multi-physical field synergistic cleaning is adopted for more thorough cleaning. By simultaneously applying three actions to the resin—constant temperature control, ultrasonic vibration, and swirling gas-liquid disturbance—suspended matter and colloidal impurities on the resin surface and in the pores can be deeply removed, solving the problems of incomplete cleaning and low cleaning efficiency of traditional single water washing.

[0094] (2) Dual indicators accurately determine the cleaning endpoint and avoid misjudgment. The system adopts dual monitoring of light transmittance and turbidity, and the light sensor is activated only when the flow field is stable and there are no bubbles. It is not affected by bubbles and the judgment result is more accurate. It can ensure that the cleaning is qualified and avoid over-cleaning, which wastes energy and time.

[0095] (3) Central directional negative pressure material extraction makes resin extraction smoother and leaves no residue. Coaxial material extraction is adopted in the center of the tank, and the resin is extracted smoothly from the central area. It does not depend on the flow field of the tank bottom or tank wall, and there will be no local accumulation of material or incomplete extraction. The extraction efficiency is high and the resin recovery rate is high.

[0096] (4) Multiple anti-suction structure protection prevents the material extraction component from being damaged by resin. During the extraction process, the gas-material separation anti-suction baffle, filter plug and negative pressure unidirectional conduction structure provide triple protection to completely prevent resin particles from being sucked into the negative pressure ejector, making the equipment more stable and reducing the failure rate significantly.

[0097] (5) The purging and extraction are synchronized, and the extraction port will never be blocked. The purging nozzle group around the extraction port continuously purges the loose resin, preventing resin bridging and blockage of the extraction port from the source, ensuring continuous and smooth extraction throughout the process without the need to stop the machine for unblocking.

[0098] (6) The air source is uniformly supplied, the structure is simple and the operating cost is low. The power for material extraction and the air for purging are all provided by the same air inlet pipe. The factory's compressed air network is used directly, and there is no need to configure high-pressure air cylinders or independent air compressors, which simplifies the equipment and reduces the operating cost.

[0099] (7) Staged drainage, and complete emptying of residual liquid in tank and piping. First drain the waste liquid in the large cavity of the tank, and then drain the residual liquid in the piping system. There are no dead corners for liquid accumulation and no residual wastewater, which avoids cross-contamination during the next cleaning and also prevents long-term liquid accumulation in the pipeline from breeding impurities and clogging the channels.

[0100] (8) Backflushing can clear blockages, making equipment maintenance simpler. After sewage discharge, high-pressure backflushing can be performed through the bottom air inlet to automatically clear blockages in the water and air distribution holes and concave perforated plates, extending the service life of the equipment and reducing manual maintenance.

[0101] (9) Fully automated process, no manual operation required. From water intake, air intake, temperature control, cleaning, monitoring, material extraction to sewage discharge, everything is automatically completed by the electronic control system. It is simple to operate, stable in operation, and suitable for continuous industrial use.

[0102] The above is an exemplary description of the invention. Obviously, the specific implementation of the invention is not limited to the above-described manner. Any non-substantial improvement made using the inventive concept and technical solution of the invention, or the direct application of the inventive concept and technical solution to other situations without modification, is within the protection scope of the invention.

Claims

1. A resin cleaning tank that thoroughly cleans and extracts resin midway, characterized in that, It includes the cleaning tank body (1), intermediate resin extraction pipe (2), concave perforated plate (3), piping system device (4), pneumatic negative pressure material extraction assembly (5), electronically controlled intelligent monitoring assembly (6) and external medium control assembly (7). The cleaning tank body (1) includes a vertically arranged cylindrical section (11), a bottom flat cover (12) is provided at the lower end of the cylindrical section (11), an air inlet and a sewage outlet (15) are provided at the center of the bottom flat cover (12), and an exhaust and water inlet (16) are provided at the top of the cleaning tank body (1); two symmetrically arranged equipment flanges (13) are fixed in the lower middle part of the inner wall of the cylindrical section (11), and the concave perforated plate (3) is a circular perforated plate with a downward-facing center, and is horizontally clamped and fixed between the two equipment flanges (13), with its concave center coinciding with the axis of the cylindrical section (11); a cylindrical section double-sided flange (14) is fixed in the lower middle part of the outer wall of the cylindrical section (11), and the piping system device (4) is located directly below the concave perforated plate (3) and is connected to the inner cavity of the cylindrical section double-sided flange (14); The intermediate resin extraction tube (2) is vertically and coaxially inserted through the center of the cleaning tank body (1), with its lower end extending above the concave porous plate (3) and its upper end passing through the top of the cleaning tank body (1) and sealed to the pneumatic negative pressure material extraction assembly (5). The external medium control component (7) is located on the outside of the cylindrical section (11) and is sealed to the double-sided flange (14) of the cylindrical section. The branch pipes of the external medium control component (7) are respectively connected to the air inlet and drain outlet (15) and the exhaust water inlet (16) to deliver temperature-controlled and filtered cleaning water and high-pressure air source into the cleaning tank body (1). The electrical control intelligent monitoring component (6) is electrically connected to the external medium control component (7), the piping system device (4), and the concave perforated plate (3) to form a closed-loop control structure with multi-physical field collaboration. The power source of the pneumatic negative pressure material extraction component (5) is provided by the air inlet pipe (72) of the external medium control component (7). The air inlet pipe (72) is connected to an industrial oil-free compressed air compressor or a factory compressed air pipeline network. Independent pressure regulating valves, filters and check valves are installed on the branch pipes of the air inlet pipe (72) to meet the pressure and cleanliness requirements of different branches.

2. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 1, characterized in that, The upper surface of the concave porous plate (3) is evenly provided with several anti-clogging water distribution caps (31). The lower end of the anti-clogging water distribution caps (31) is sealed and inserted into the through hole of the concave porous plate (3) and connected to the lower side of the concave porous plate (3). The lower surface of the concave porous plate (3) is fixed with an array of ultrasonic vibration components. The working frequency range of the ultrasonic vibration components is 20kHz-100kHz. The outer side of the ultrasonic vibration components is wrapped with a thermal control insulation layer. The interior of the concave porous plate (3) is embedded with several temperature sensing probes evenly distributed radially. The detection end of the temperature sensing probe faces the concave center of the concave porous plate (3). The ultrasonic vibration components and temperature sensing probes are electrically connected to the electronically controlled intelligent monitoring component (6).

3. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 1, characterized in that, The piping system device (4) includes a horizontally arranged main water pipe (41) and several branch water pipes (42). One end of the main water pipe (41) is fixedly connected to and communicates with the inner flange face of the double-sided flange (14) of the cylindrical section, and the other end is fixed with a main pipe plug plate (44). One end of the main water pipe (41) with the main pipe plug plate (44) is welded to the inner wall of the cylindrical section (11) through a main water pipe fixing component (43). The pipe (42) is provided with several parallel pipes that are evenly welded to the lower side of the main water distribution pipe (41), and the pipe wall of the water distribution branch pipe (42) is connected to the interior of the main water distribution pipe (41). Both ends of the water distribution branch pipe (42) are fixed with branch pipe plugs (45). The pipe wall of the water distribution branch pipe (42) is evenly provided with several swirling water and air distribution holes that are inclined upward and face the axis of the cylinder section (11). The diameter of the swirling water and air distribution holes is 3mm-8mm.

4. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 1, characterized in that, The lower end of the intermediate resin extraction pipe (2) is a funnel-shaped extraction port (21). Several purge nozzle groups (22) are arranged around the periphery of the extraction port (21). The air outlet direction of the purge nozzle group (22) is inclined downward and towards the center of the extraction port (21). The purge nozzle group (22) is connected to the branch pipe of the air inlet pipe (72) through a high-pressure purge branch pipe (23) pre-embedded inside the intermediate resin extraction pipe (2), and is used to purge and prevent resin from clogging the extraction port (21). The upper end of the intermediate resin extraction pipe (2) is provided with a pneumatic interface (25). The outer end of the pneumatic interface (25) is tightly connected to the pneumatic negative pressure extraction component (5). The pneumatic interface (25) is sealed, and a gas-material separation anti-suction baffle (26) is fixed on the inner wall of the intermediate resin extraction tube (2) on one side of the inner end. The gas-material separation anti-suction baffle (26) blocks the inner port of the pneumatic interface (25) upward. The upper end and both sides of the gas-material separation anti-suction baffle (26) are sealed and fixed to the inner wall of the intermediate resin extraction tube (2). A filter layer (24) is provided on the rear side of the gas-material separation anti-suction baffle (26). A negative pressure unidirectional conduction structure (27) is installed in the inner port of the pneumatic interface (25). The conduction direction of the negative pressure unidirectional conduction structure (27) is from the inner cavity of the intermediate resin extraction tube (2) to the pneumatic negative pressure extraction assembly (5).

5. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 1, characterized in that, The pneumatic negative pressure material extraction assembly (5) includes a negative pressure ejector (51), a pneumatic connecting pipe (52), a pneumatic regulating valve (53), and a gas pressure stabilizing tank (54). One end of the pneumatic connecting pipe (52) is sealed to the pneumatic interface (25) of the intermediate resin extraction pipe (2), and the other end is connected to the negative pressure end of the negative pressure ejector (51). The pneumatic regulating valve (53) is connected in series to the pneumatic connecting pipe (52). The high-pressure power air inlet of the negative pressure ejector (51) is connected to the branch pipe of the air inlet pipe (72) through the air inlet pipe (55). The gas pressure stabilizing tank (54) is connected in series to the air inlet pipe (55), and its volume is 5L-20L, which is used to stabilize the pressure fluctuation of the material extraction air path. A stable negative pressure field can be formed by relying on the negative pressure ejector (51) and utilizing the gas Venturi effect.

6. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 1, characterized in that, The electronically controlled intelligent monitoring component (6) includes a liquid level sensor (61), a pressure sensor (62), a turbidity sensor (63), an integrated control module (64), an electronically controlled actuator valve group (65), and a light-sensing detection component (66). The liquid level sensor (61) is installed on the inner wall of the cylindrical section (11), the pressure sensor (62) is installed on the outer air inlet end of the double-sided flange (14) of the cylindrical section, and the turbidity sensor (63) is installed at the low-position vent on the side wall of the cylindrical section (11). The liquid level sensor (61) and the pressure sensor (62) are... Both the turbidity sensor (63) and the integrated control module (64) are electrically connected to the integrated control module (64) via shielded signal cables, and the integrated control module (64) is linked with the electrically controlled actuator valve group (65); the photosensitive detection component (66) includes a laser emitting probe (661) and a laser receiving probe (662), which are symmetrically embedded in the upper part of the cylinder section (11), directly above the concave porous plate (3) in the cleaning liquid level range. The two are arranged coaxially and horizontally facing each other, and the light path penetrates the core area of ​​resin cleaning in the tank without being blocked by the concave porous plate (3); the laser emitting probe (661) Both the laser receiving probe (662) and the laser receiving probe adopt a waterproof and anti-fouling sealing structure with a sealing level of IP67 and are electrically connected to the integrated control module (64) through shielded signal cables. The start-stop sequence of the light sensing component (66) is controlled by the integrated control module (64). It is only started when the flow field inside the tank is stable and there is no bubble disturbance in the later stage of cleaning. It can accurately collect the light transmission signal of resin cleaning and achieve dual accurate judgment of cleaning status in conjunction with the turbidity sensor (63).

7. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 6, characterized in that, The external medium control component (7) includes a water inlet pipe (71), an air inlet pipe (72), and an exhaust pipe (73). A heat exchange sleeve (74) is coaxially fitted on the outside of the water inlet pipe (71). The heat exchange medium inside the heat exchange sleeve (74) is heat transfer oil or cooling water. The water inlet pipe (71) is a double-ended branch, with one end connected to the double-sided flange (14) of the cylindrical section and connected to the piping system device (4), and the other end connected to the exhaust water inlet (16) at the top of the cleaning tank body (1). The air inlet pipe (72) is used to introduce clean compressed air. A gas filter dehumidifier (75) and a flow metering valve (76) are connected in series on the pipe. The air inlet pipe (72) branches into at least two branch pipes, which are respectively connected to the high-pressure purging branch pipe of the purging nozzle assembly (22). 23) The air inlet pipe (56) of the negative pressure ejector (51) is equipped with an independent pressure regulating valve, filter and check valve on each branch pipe; the air inlet pipe (72) is a double branch, one end of which is connected to the double-sided flange (14) of the cylindrical section and connected to the piping system device (4), and the other end is connected to the air inlet and drain outlet (15) at the center of the bottom flat cover (12) of the cleaning tank body (1); the drain pipe (73) is connected to the double-sided flange (14) of the cylindrical section and connected to the piping system device (4) at one end, and connected to the wastewater collection device at the other end; the water inlet pipe (71), air inlet pipe (72) and drain pipe (73) are all equipped with independent branch valves of the electrically controlled actuator valve group (65), which are electrically connected to the integrated control module (64) to realize the automated control and transportation of multiple media.

8. The resin cleaning tank with thorough cleaning and intermediate extraction according to claim 1, characterized in that, The air inlet and drain outlet (15) is a through-type pipe, and its inner wall is flush with the upper plate of the bottom flat cover (12). The diameter of the air inlet and drain outlet (15) is DN50-DN100. The exhaust water inlet (16) is a through-type pipe, and its installation height is 100mm-200mm higher than the maximum cleaning liquid level inside the cleaning tank body (1). The diameter of the exhaust water inlet (16) is DN80-DN150.

9. A resin cleaning method based on the resin cleaning tank of any one of claims 1-8, which involves thorough cleaning and intermediate extraction, characterized in that, Includes the following steps: S1. Media Injection and Liquid Level Control: The resin to be cleaned is fed into the tank through the resin inlet at the top of the tank body (1), and the resin is distributed in the central area of ​​the tank body under the aggregation effect of the concave porous plate (3). The external medium control component (7) injects cleaning water, which is temperature-controlled by the heat exchange sleeve (74), into the cleaning tank body (1) through the two branches of the water inlet pipe (71) via the exhaust water inlet (16) and the piping system device (4), respectively. At the same time, it sends high-pressure air source treated by the gas filter dehumidifier (75) through the two branches of the air inlet pipe (72) via the air inlet and drain outlet (15) and the piping system device (4), respectively. The electronic control intelligent monitoring component (6) monitors the liquid level in real time through the liquid level sensor (61) and keeps the liquid level in the tank stable at 50mm-100mm above the concave perforated plate (3). The exhaust water inlet (16) simultaneously discharges redundant air in the tank. S2, Multi-physics field collaborative cleaning: The integrated control module (64) of the electronic intelligent monitoring component (6) starts the ultrasonic vibration component on the lower side of the concave porous plate (3), and forms a gas-liquid swirling field with the swirling water and gas distribution holes of the piping system device (4). The temperature sensor probe collects the cleaning temperature in real time and feeds it back to the integrated control module (64). The heat exchange medium flow rate of the heat exchange sleeve (74) is adjusted to maintain constant temperature cleaning, so as to realize the multi-physical field collaborative stripping of resin impurities. S3. Dual-indicator monitoring of cleaning status: When the flow field inside the tank is stable and there are no large number of bubbles in the later stage of cleaning, the integrated control module (64) starts the photosensitive detection component (66), and the laser emitting probe (661) and the laser receiving probe (662) collect the transmittance signal inside the tank. At the same time, the turbidity sensor (63) collects the turbidity signal of the wastewater. The two types of signals are transmitted to the integrated control module (64) simultaneously to complete the dual monitoring of the cleaning status. S4. Standard assessment and intermediate negative pressure material extraction: The integrated control module (64) compares and judges the transmittance and turbidity signals. When the transmittance meets the standard and the turbidity drops to the preset threshold, it is judged that the cleaning is qualified and then the media delivery branch of the external media control component (7) is closed. The pneumatic negative pressure material extraction component (5) is started. Relying on the clean compressed air provided by the air inlet pipe (72), a stable negative pressure field is formed in the intermediate resin extraction pipe (2) through the negative pressure ejector (51). The air-material separation anti-suction baffle (26), the filter layer (24) and the negative pressure unidirectional conduction structure (27) block the back suction of the resin. At the same time, the blowing nozzle group (22) is opened. The compressed air provided by the air inlet pipe (72) is used to blow the loose resin. The resin is directionally extracted from the intermediate resin extraction pipe (2) through the extraction port (21). S5. Thorough and graded sewage discharge: After the resin is pumped out, first open the air inlet and drain outlet (15) to discharge the residual cleaning waste liquid in the tank, then open the drain pipe (73) to discharge the residual liquid in the piping system device (4), so as to achieve the staged and thorough emptying of the tank cavity and piping. After the emptying is completed, close all valves to complete the single cleaning and material pumping process.

10. The resin cleaning method based on a thoroughly cleaned and intermediately extracted resin cleaning tank according to claim 9, characterized in that, In step S2, the integrated control module (64) adjusts the heat exchange medium flow rate of the heat exchange sleeve (74) according to the detection data of the temperature sensor probe, and maintains the cleaning temperature stably within the suitable range of 25℃-60℃. The vibration frequency of the ultrasonic vibration component is adaptively adjusted according to the cleaning process. In step S3, the light-sensing detection component (66) is activated only after the gas-liquid disturbance in the tank stops, and the integrated control module (64) uses a light transmittance of ≥90% and a turbidity of ≤5NTU as the criteria for determining whether the cleaning meets the standards. In step S4, the pneumatic negative pressure material extraction assembly (5) stabilizes the air source pressure provided by the air inlet pipe (72) through the gas pressure stabilizing tank (54). The negative pressure unidirectional conduction structure (27) only allows the airflow to flow from the intermediate resin extraction pipe (2) to the negative pressure ejector (51). With the help of the gas-material separation anti-suction baffle (26), the resin particles are completely blocked from entering the pneumatic negative pressure material extraction assembly (5). The material extraction process and the cleaning process are executed independently at different times. During the material extraction, the piping system device (4) stops operating to avoid the flow field interfering with the resin extraction. In step S5, after the evacuation operation is completed, a high-pressure air source can be introduced through the air inlet and outlet (15) to backflush and clear the blockage of the piping system device (4) and the concave perforated plate (3).

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