An industrial water purification apparatus

Abstract

The present application relates to water treatment technical field, disclose a kind of industrial water purification equipment, including external shell and water purification device located in shell, water purification device includes filter cartridge and chemical treatment cylinder, rotating shaft and multiple stirring blades arranged along rotating shaft axial direction are provided in chemical treatment cylinder, stirring blade has extension and contraction state, pusher assembly is provided in rotating shaft, for driving stirring blade state conversion, rotating member is installed on chemical treatment cylinder and drives rotating shaft rotation, rotating shaft is communicated with feed pipe, filter plate is threadedly connected on rotating shaft, guide is installed between rotating shaft and chemical treatment cylinder inner wall, when rotating member drives rotating shaft rotation, filter plate moves along rotating shaft axial direction, cleaning auger is provided at the bottom of chemical treatment cylinder, cleaning auger main shaft is one-way transmission connection with rotating shaft.The present application can effectively clean flocculation after impurity, avoid impurity accumulation, improve water purification efficiency and equipment maintenance convenience.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and more specifically to an industrial water purification device. Background Technology

[0002] Industrial water treatment is a crucial link in ensuring the stable operation of modern industrial production, realizing the sustainable use of water resources, and meeting environmental regulations. In many industrial sectors, especially power, chemical, metallurgical, petroleum refining, pharmaceutical, and central air conditioning systems, large quantities of circulating cooling water, process water, and boiler feedwater are used.

[0003] Chinese patent document CN117658301B discloses a zero-discharge industrial wastewater treatment system, including a base plate. The top of the base plate is equipped with a wastewater tank, a mixing tank, a reagent tank, and a recovery tank. The wastewater tank and the mixing tank are connected via an inlet pipe. The reagent tank is located on top of the mixing tank. The mixing tank and the recovery tank are connected via a second outlet pipe. A mixing chamber is formed inside the mixing tank, and the inlet pipe is connected to the mixing chamber. A first outlet pipe is formed at the bottom of the mixing chamber. A water pump is provided between the discharge pipe and the discharge pipe 2. Several annular components are provided on the inner side of the mixing chamber. A filter screen is fixed on the inner wall of the lowest annular component. Several collection mechanisms are provided at equal intervals on the top of the annular component. A mixing mechanism is provided at the bottom of the mixing chamber. A material spreading mechanism that cooperates with the mixing mechanism is provided on the inner wall of the mixing tank. A high liquid level sensor and a low liquid level sensor are provided inside the mixing chamber. The high liquid level sensor is located at the top of the uppermost annular component, and the low liquid level sensor is located at the bottom of the lowermost annular component.

[0004] The aforementioned technical solution, through the design of the collection mechanism, can compress the flocculated and precipitated impurities entering the filtration chamber into blocks. Simultaneously, the feed inlet at the top of the filtration chamber is blocked, facilitating compression. The flocculated and precipitated impurities inside the filtration chamber are squeezed into blocks by the pressure plate, and water flows out through the filter holes. The discharged water impacts the area between the two feed inlets on the lower annular component. However, this solution uses multiple sets of devices to achieve flocculation and sedimentation of industrial wastewater. The impurities generated after flocculation may fall onto the mixing mechanism. During the discharge of purified water, the flocculent material may detach from the mixing mechanism, and the flocculated impurities remain inside the tank, making further processing difficult. Summary of the Invention

[0005] This invention provides an industrial water purification device, which aims to solve the problem that impurities after flocculation are difficult to handle in related technologies.

[0006] An industrial water purification device includes a water purification unit comprising a filter cylinder and a chemical treatment cylinder. The chemical treatment cylinder contains a rotating shaft and multiple stirring blades arranged axially along the rotating shaft. The rotation centers of the stirring blades are horizontally positioned and perpendicular to the rotating shaft. The stirring blades have extended and retracted states. A pushing component is provided within the rotating shaft to drive the stirring blades between the extended and retracted states. A rotating component is mounted on the chemical treatment cylinder to drive the rotating shaft. A feed pipe for spraying chemicals is connected to the rotating shaft. A filter press plate is threaded onto the rotating shaft. A guide component is installed between the rotating shaft and the inner wall of the chemical treatment cylinder. When the rotating component drives the rotating shaft to rotate, the filter press plate moves axially along the rotating shaft, thereby cleaning the sediment on the rotating shaft and the inner wall of the chemical treatment cylinder. A cleaning auger is located at the bottom of the chemical treatment cylinder, and the main shaft of the cleaning auger is unidirectionally connected to the rotating shaft.

[0007] The effect is as follows: the waste liquid first enters the chemical treatment cylinder, where a rotating shaft drives multiple stirring blades to rotate. The reagent is evenly sprayed through the internal channels of the rotating shaft, ensuring thorough mixing with the waste liquid, promoting flocculation, and causing suspended solids and colloidal particles in the wastewater to form larger flocs. The drive assembly controls the extension and retraction of the stirring blades. During stirring, the blades extend to provide maximum stirring efficiency. After stirring is complete, or before filtration and cleaning operations, the drive assembly switches the blades to a retracted state. When the flocculation reaction is complete and the stirring blades are in the retracted state, the rotating component drives the rotating shaft to rotate. Since the filter plate is connected to the rotating shaft via threads, the rotation of the shaft causes the filter plate to move axially. During this movement, the filter plate cooperates with the guide components to ensure stable and tight contact with the inner wall of the chemical treatment cylinder. As the filter plate descends, its filter screen filters the flocs, achieving solid-liquid separation. More importantly, during the movement of the filter press plates, their surfaces and edges physically scrape and clean the flocculants and sediments adhering to the rotating shaft surface and the inner wall of the chemical treatment cylinder, achieving self-cleaning of the equipment. The bottom of the chemical treatment cylinder is tapered to collect the flocculated impurities. A one-way drive connection is designed between the bottom cleaning auger and the rotating shaft. This means that when the rotating shaft rotates in a specific direction, the cleaning auger rotates accordingly, conveying the flocculated impurities deposited at the bottom upwards or downwards through a spiral action, ultimately discharging them from the equipment. When the rotating shaft rotates in the opposite direction, the one-way drive mechanism disengages, and the cleaning auger stops rotating, avoiding further agitation of the cleaned area. The extended stirring blades ensure thorough and uniform mixing of the reagents and waste liquid, improving flocculation efficiency. The axial movement of the filter press plates not only achieves solid-liquid separation but also effectively cleans the sediments on the rotating shaft and cylinder wall, reducing the need for manual cleaning. The cleaning auger, combined with the tapered bottom, ensures the concentration and smooth discharge of flocculated impurities, preventing impurities from accumulating inside the cylinder. The shrinking stirring blades reduce flocculant adhesion; the one-way auger prevents secondary agitation of impurities.

[0008] Preferably, a hinge shaft is mounted on the upper end of the stirring blade, and a mounting groove is provided on the housing. The hinge shaft is rotatably mounted on the inner wall of the mounting groove. When the stirring blade is in the extended state, it extends out of the mounting groove; when the stirring blade is in the retracted state, it is located within the mounting groove. The upper end of the stirring blade is connected to the mounting groove via the hinge shaft. The hinge shaft provides a stable pivot point, allowing the stirring blade to swing around this axis. The mounting groove is located on the housing (or the wall of the chemical treatment cylinder). When the stirring blade needs to maximize its stirring range, it swings outward, extending from the mounting groove to cover a wider area. When the stirring blade no longer needs stirring or requires cleaning or filtration, it swings inward, retracting into the mounting groove. This storage method effectively protects the agitator blades from unnecessary wear or impact, while also providing unobstructed space for the movement of the filter press plates and the cleaning of the auger. When extended, it maximizes the agitation area, ensuring efficient mixing; when retracted, the blades are hidden within the groove, providing a clear path for the movement of the filter press plates and the cleaning auger, reducing interference and preventing damage to the blades or excessive flocculent buildup when not agitated. The blade extension and retraction are cleverly achieved by utilizing the shell space without occupying additional external space.

[0009] Preferably, a torsion spring is installed between the hinge shaft of the stirring blade and the inner wall of the mounting groove. One end of the torsion spring is connected to the mounting assembly, and the other end is hinged to the inner wall of the mounting groove. The torsion spring applies a preset elastic force between the hinge shaft of the stirring blade and the inner wall of the mounting groove. For example, the torsion spring can be designed to tend to keep the stirring blade in a retracted state automatically when there is no external pushing force, or to assist the blade in resetting when the pushing assembly is released after it has been extended by the pushing assembly. The elastic force of the torsion spring can partially offset the thrust required by the pushing assembly during the blade extension and retraction process, thereby reducing the energy consumption and workload of the pushing assembly. The torsion spring can also provide a stable holding force to help the stirring blade maintain its position in a specific state (extended or retracted), preventing accidental displacement caused by water flow impact or equipment vibration. The elastic force of the torsion spring can assist the stirring blade in extending or retracting, making the movement smoother and more reliable, reducing the power consumption of the pushing assembly, and extending its service life.

[0010] Preferably, the pushing assembly includes an electric telescopic rod installed within the rotating shaft. A pushing rod is mounted on the movable end of the electric telescopic rod. A protrusion facing the pushing rod is fixedly provided on the upper end of the stirring blade. A pushing groove is fixedly provided on the pushing rod, and the protrusion is located within the pushing groove so that the protrusion deflects when the pushing groove moves up and down. The electric telescopic rod, as a power source, is installed inside the rotating shaft. It converts electrical energy into linear motion through an internal motor and screw mechanism, achieving precise stroke control. The movable end of the electric telescopic rod is connected to the pushing rod. When the telescopic rod extends or retracts, the pushing rod moves up and down synchronously along the axial direction of the rotating shaft. The pushing rod is designed with a pushing groove, and the stirring blade has a protrusion that mates with the pushing groove. When the pushing rod moves up and down, the inclined surface of the pushing groove contacts the protrusion and applies a lateral force, forcing the protrusion to move along the trajectory of the pushing groove, thereby driving the stirring blade to deflect (oscillate) around its hinge axis, achieving extension or contraction. The slope and depth of the push groove, as well as the shape of the protrusion (such as a roller-type protrusion), affect the blade deflection stroke and the required thrust. The electric telescopic rod provides precise linear displacement, ensuring that the stirring blades extend and retract in place and synchronously. The mechanical cooperation between the protrusion and the push groove ensures the stability and reliability of the blade extension and retraction movement. The push assembly is located inside the rotating shaft, effectively isolating the wastewater environment and reducing corrosion and wear.

[0011] Preferably, the filter press plate includes an inner ring and an outer ring, with multiple reinforcing ribs installed between the inner and outer rings. A filter screen is installed between the inner and outer rings. The rotating shaft is threaded, and the inner ring is threaded internally, allowing for a threaded connection between the inner ring and the rotating shaft. The filter press plate consists of an inner ring and an outer ring, connected by reinforcing ribs to form a robust annular structure capable of withstanding the axial and radial forces generated during filtration. The filter screen, a core component for solid-liquid separation, is installed between the inner and outer rings. The pore size of the filter screen is designed according to the particle size of the target flocculants, allowing purified water to pass through while retaining flocculants. The rotating shaft is threaded, and the inner ring of the filter press plate is threaded internally to match the rotating shaft thread. This threaded connection allows the filter press plate to move precisely up and down along the axis of the rotating shaft when the rotating shaft is driven by a rotating component. The direction of rotation determines whether the filter press plate moves upward or downward. The filter screen design ensures effective separation of flocs and purified water. The reinforcing ribs improve the strength and stability of the filter press plate, ensuring that it does not deform under the action of the filtration force. The threaded connection provides precise axial movement capability, making the filtration and cleaning process controllable. The movement of the filter press plate itself is the basis for cleaning the rotating shaft and cylinder wall.

[0012] Preferably, the guide component includes a guide groove formed on the outer ring and a guide block fixedly disposed on the inner wall of the chemical treatment cylinder. The guide block cooperates with the guide groove. To ensure that the filter press plate does not oscillate or deflect radially when it moves axially along the rotating shaft under threaded drive, thus affecting the fit with the cylinder wall, the guide component is introduced. The outer ring of the filter press plate has a guide groove, and the inner wall of the chemical treatment cylinder has a guide block fixedly disposed to cooperate with the guide groove. When the filter press plate moves up and down, the guide block always slides within the guide groove, guiding the filter press plate to maintain its radial position, ensuring that it runs smoothly along the predetermined track, and maintaining an appropriate gap or contact with the cylinder wall for effective scraping. The guide block is usually made of wear-resistant material to reduce frictional resistance and extend the service life of the guide component. It ensures that the filter press plate remains stable during axial movement, preventing shaking and jamming, ensuring effective contact between the filter press plate and the cylinder wall, achieving uniform and thorough cleaning, and reducing additional wear on equipment components caused by radial sway.

[0013] Preferably, a rotary sealing joint is installed between the rotating shaft and the feed pipe to ensure a sealed connection between them. The inner wall of the rotating shaft has multiple outlets running from top to bottom to ensure uniform spraying of the agent within the chemical treatment cylinder. The rotary sealing joint is the core component for achieving leak-free transmission of the agent between the stationary feed pipe and the rotating shaft. It typically includes one or more sealing rings and bearings, allowing the rotating shaft to rotate freely while maintaining the seal of the fluid channel. Flocculants or other treatment agents are delivered through the feed pipe to the rotary sealing joint and then enter the agent channel inside the rotating shaft. The inner wall of the rotating shaft has multiple outlets uniformly arranged axially. These outlets allow the agent to be uniformly sprayed from inside the rotating shaft into the wastewater within the chemical treatment cylinder. By precisely designing the size, number, and distribution of the discharge ports, a uniform concentration distribution of the reagent can be ensured throughout the entire treatment cylinder, thereby optimizing the flocculation reaction effect. The rotary sealing joint ensures that the reagent is delivered accurately and without leakage even when the rotating shaft is rotating. Multiple discharge ports spray the reagent evenly along the rotating shaft, ensuring that the reagent and wastewater are fully and evenly mixed, improving reaction efficiency. The uniform distribution of the reagent in the cylinder reduces treatment dead zones and improves the overall treatment effect.

[0014] Preferably, the rotating component is a servo motor, and the rotating shaft is connected to the output end of the servo motor; a servo motor is a type of motor capable of precisely controlling angle, speed, and torque. By receiving control signals, it can precisely drive the rotating shaft to rotate forward and backward, reciprocate, or rotate at a constant speed.

[0015] Preferably, the bottom of the chemical treatment cylinder is tapered, and the cleaning auger is connected to the bottom of the chemical treatment cylinder. The tapered bottom of the chemical treatment cylinder allows flocculated impurities and precipitates to naturally converge towards the center of the tapered bottom using gravity. This prevents impurities from dispersing in the flat bottom area and improves collection efficiency.

[0016] Preferably, a first bevel gear is mounted on the main shaft of the cleaning auger, and a second bevel gear is mounted on the rotating shaft. The first and second bevel gears mesh with each other. A one-way bearing is installed between the first bevel gear and the main shaft of the cleaning auger, or between the second bevel gear and the rotating shaft. The two bevel gears mesh with each other, and when the rotating shaft rotates, power is transmitted to the main shaft of the cleaning auger through the bevel gears. The bevel gears can achieve power transmission between vertical or inclined axes, suitable for the relative positions of the rotating shaft and the main shaft of the cleaning auger in this equipment. When the rotating shaft rotates in a preset specific direction (e.g., clockwise), the one-way bearing will "lock" or "engage," allowing power to be transmitted from the second bevel gear to the first bevel gear, thereby driving the main shaft and spiral blades of the cleaning auger to rotate, realizing the conveying and discharge of impurities. When the rotating shaft rotates in the opposite direction (e.g., counterclockwise, for the upward reset of the filter plate), the one-way bearing will "disengage" or "override," preventing power from being transmitted to the cleaning auger. At this time, the cleaning auger remains stationary, which avoids secondary agitation of the impurities at the bottom during the filter plate reset process, and also prevents the cleaning auger from running idle when not necessary, thus reducing wear and energy consumption.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0018] 1. The rotating shaft and the feed pipe achieve sealed transmission through a rotary sealing joint. The agent is evenly sprayed from top to bottom through multiple discharge ports on the inner wall of the rotating shaft. Combined with the rotation of the rotating shaft and the stirring blades, the problem of excessively high or low concentration of the agent in some areas is avoided. This ensures that the agent and the wastewater are in full contact in the chemical treatment cylinder, which greatly improves the flocculation reaction rate and reaction sufficiency, and enables the suspended solids and colloidal particles in the wastewater to be efficiently coagulated into easily separable flocs.

[0019] 2. The stirring blades can be flexibly switched between extended and retracted states by pushing the component. When extended, the blades extend from the mounting slot to maximize the stirring coverage area, form a strong convective flow field, and promote particle collision and aggregation. With the precise speed adjustment of the rotating shaft driven by the servo motor, the stirring parameters can be dynamically adjusted according to the wastewater quality and the type of reagent to adapt to the flocculation requirements under different working conditions and further ensure the stability of the water purification effect.

[0020] 3. The filter press plate is connected to the rotating shaft by threads and moves axially under the constraint of the guide. Its outer ring is in close contact with the inner wall of the chemical treatment cylinder and its inner ring is in contact with the surface of the rotating shaft. During the movement, it simultaneously scrapes the sediment on the cylinder wall and shaft, realizing the self-cleaning of the core components of the equipment. When the stirring blades shrink, they are stored in the installation groove, which not only reduces the adhesion of flocs, but also provides unobstructed space for the movement of the filter press plate and the operation of the auger, and avoids the accumulation and solidification of impurities on the blade surface.

[0021] 4. The bottom of the chemical treatment cylinder adopts a conical constriction design, which uses gravity to guide flocculated impurities to gather at the bottom center. Combined with the spiral conveying of the bottom cleaning auger, the impurities are collected in a concentrated manner. The cleaning auger and the rotating shaft are connected by bevel gear meshing and one-way bearings. It is only activated when the rotating shaft rotates in a specific direction, which not only ensures the directional discharge of impurities, but also avoids secondary agitation when rotating in the opposite direction. This completely solves the problem of impurity dispersion and incomplete discharge in traditional equipment, and eliminates the risk of internal blockage of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the internal structure of the housing of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal structure of the chemical treatment cylinder of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the rotating shaft of the present invention.

[0025] Figure 4 This is a schematic diagram of the structure of the filter press plate of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the stirring blade of the present invention in an extended state.

[0027] Figure 6 This is a schematic diagram of the first bevel gear and the second bevel gear of the present invention.

[0028] Figure 7 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0029] Figure label:

[0030] 1. Filter cylinder; 2. Chemical treatment cylinder; 3. Rotating shaft; 31. Stirring blade; 32. Hinge shaft; 33. Mounting groove; 34. Torsion spring; 35. Discharge port; 4. Pushing assembly; 41. Electric telescopic rod; 42. Pushing rod; 43. Protrusion; 44. Pushing groove; 5. Filter press plate; 51. Inner ring; 52. Outer ring; 53. Filter screen; 6. Guide component; 61. Guide groove; 62. Guide block; 7. Rotary sealing joint; 8. Cleaning auger; 81. First bevel gear; 82. Second bevel gear; 9. Rotating component. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figures 1-7 As shown, an industrial water purification device mainly consists of a robust outer casing and a water purification unit housed within it. The outer casing provides support and protection for the entire system and is typically made of corrosion-resistant materials (such as 304 or 316L stainless steel) to adapt to the complex environment of industrial wastewater treatment.

[0033] The water purification device is the core functional module of this equipment, which is internally divided into two parts: a filter cylinder 1 and a chemical treatment cylinder 2. The filter cylinder 1 is mainly responsible for the preliminary physical filtration of the incoming wastewater, removing larger suspended particles and protecting the delicate components of the subsequent chemical treatment cylinder 2 from wear. The chemical treatment cylinder 2 is the key innovation of this invention, integrating multiple functions such as reagent dosing, efficient stirring, flocculation reaction, solid-liquid separation, and impurity removal.

[0034] The chemical treatment cylinder 2 is the core component of this equipment. Its internal structure includes, but is not limited to: a rotating shaft 3, multiple stirring blades 31, a pushing assembly 4, a rotating component 9, a feed pipe, a filter press plate 5, a guide component 6, and a cleaning auger 8, etc.

[0035] The rotating shaft 3 is the central shaft inside the chemical treatment cylinder 2. It runs through the entire chemical treatment cylinder 2 and serves as the mounting and moving carrier for several other key components (such as stirring blades 31, pushing assembly 4, and filter press 5).

[0036] The rotating shaft 3 is typically made of high-strength, corrosion-resistant stainless steel. Its diameter and wall thickness need to be strictly calculated and designed based on the size of the processing cylinder, the number and size of the stirring blades 31, and the expected torque and axial force to ensure stability and reliability during long-term operation and avoid failure due to fatigue or corrosion.

[0037] The upper end of the rotating shaft 3 is usually fixedly connected to the top of the outer housing or chemical treatment cylinder 2 via a bearing housing, while the lower end may be suspended or further supported by a bottom bearing. The bearings are selected as deep groove ball bearings or self-aligning roller bearings with good sealing performance, corrosion resistance, and high load-bearing capacity, and are equipped with an appropriate lubrication system to reduce friction, reduce energy consumption, and extend service life.

[0038] The upper or side portion of the rotating shaft 3 is directly or via a coupling to the output end of the rotating component 9 (usually a servo motor). The coupling should be selected for its good flexibility and ability to compensate for minor alignment misalignments to prevent additional stress between the motor and the rotating shaft 3 due to installation errors or thermal expansion. Servo motors, due to their precise speed control and torque output capabilities, are particularly suitable for the precise control requirements of this equipment for both reciprocating and unidirectional rotation of the rotating shaft 3. The selection of motor power must consider the combined load of the agitation, filtration, and cleaning auger 8, with a safety margin.

[0039] The stirring blade 31 is a key component for achieving the flocculation reaction in wastewater. The innovation of this invention lies in its retractable design, which greatly optimizes the flocculation process and facilitates subsequent cleaning.

[0040] Multiple stirring blades 31 are evenly arranged along the axial direction of the rotation shaft 3 to form a stirring array. This multi-stage arrangement ensures thorough mixing of the reagent and wastewater, avoids local over-concentration or over-diluteity, and improves flocculation efficiency. The spacing between the blades can be adjusted according to the wastewater properties, flocculant type, and desired stirring intensity.

[0041] The rotation center of each stirring blade 31 is set horizontally and connected vertically to the rotation shaft 3. This installation method ensures that the blades can fully agitate the wastewater in the drum when rotating, forming eddies and promoting particle collision and floc growth.

[0042] The stirring blades 31 have extended and retracted states. In the extended state, the stirring blades 31 spread outwards, extending to near the inner diameter of the chemical treatment cylinder 2, maximizing the agitation of the wastewater. This state offers the highest stirring efficiency and is suitable for rapid mixing and flocculation. In the retracted state, the blades retract inwards, adhering closely to or concealing themselves behind or inside the rotating shaft 3, reducing the contact area with the cylinder wall and preventing excessive adhesion of flocs to the blades after stirring. The retracted state is also ideal for pressure filtration and cleaning processes, reducing resistance.

[0043] A hinge shaft 32 is mounted on the upper end of the stirring blade 31. A mounting groove 33 is provided on the side wall of the shell or chemical treatment cylinder 2. The hinge shaft 32 is rotatably mounted on the inner wall of the mounting groove 33. When the stirring blade 31 is in the extended state, most of it extends out of the mounting groove 33; when in the retracted state, it retracts and is mostly located within the mounting groove 33. This design cleverly utilizes the space within the cylinder wall to achieve the inward and outward movement of the blade.

[0044] A torsion spring 34 is installed between the hinge shaft 32 of the stirring blade 31 and the inner wall of the mounting groove 33. One end of the torsion spring 34 is connected to the stirring blade 31, and the other end is hinged to the inner wall of the mounting groove 33. The function of the torsion spring 34 is to provide a spring force to assist the stirring blade 31 in extension and retraction. For example, it can be designed so that when the pushing assembly 4 is released, the spring force of the torsion spring 34 causes the blade to automatically retract or assists in its extension. The spring force coefficient of the torsion spring 34 needs to be accurately calculated to ensure the smoothness and reliability of the blade movement.

[0045] The actuation component 4 is the core mechanism that drives the extension and retraction of the stirring blades 31. It is installed inside the rotating shaft 3 and is not directly corroded by the wastewater inside the cylinder.

[0046] The core of the driving component 4 is the electric telescopic rod 41. This rod-shaped device integrates a motor and a screw mechanism, which can drive the telescopic rod to extend or retract by the forward and reverse rotation of the motor. The electric telescopic rod 41 has advantages such as precise stroke control, large thrust, and ease of automation control.

[0047] The movable end of the electric telescopic rod 41 is equipped with a push rod 42. The push rod 42 moves axially along the rotation shaft 3, and its length and shape are optimized to effectively interact with the protrusions 43 on all the stirring blades 31.

[0048] Each stirring blade 31 has a protrusion 43 fixedly disposed at its upper end, facing the push rod 42. Correspondingly, the push rod 42 has a push groove 44 fixedly disposed thereto, which cooperates with the protrusion 43. When the push rod 42 moves up and down, the push groove 44 will generate a deflection force on the protrusion 43 located inside it, thereby driving the stirring blade 31 to rotate around the hinge shaft 32, realizing the extension or retraction of the blade.

[0049] The feed pipe is responsible for delivering flocculant or other treatment agents into the chemical treatment cylinder 2. A rotary sealing joint 7 is installed between the rotating shaft and the feed pipe. This is a crucial component, allowing the feed pipe to remain stationary while the rotating shaft (and its internal agent channels) can rotate freely, ensuring no agent leakage. The rotary sealing joint 7 typically contains high-precision bearings and wear-resistant seals (such as silicon carbide or ceramic) to guarantee long-term operational reliability.

[0050] Multiple discharge ports 35 are provided on the inner wall of the rotating shaft from top to bottom. These discharge ports 35 are evenly distributed along the axial direction of the rotating shaft and can be designed with different apertures and spray angles as needed. When the reagent enters the internal channel of the rotating shaft through the feed pipe, it is evenly sprayed into the wastewater in the chemical treatment cylinder 2 through these discharge ports 35. This uniform spraying ensures thorough mixing of the reagent and the wastewater, improves the efficiency of the flocculation reaction, and avoids localized excessively high or low reagent concentrations.

[0051] The filter press plate 5 is a key component for achieving solid-liquid separation and cleaning sediment from the cylinder wall. The filter press plate 5 includes an inner ring 51 and an outer ring 52. The inner ring 51 is threaded to the rotating shaft 3, and the outer ring 52 is fitted to the cylinder wall. Multiple reinforcing ribs are installed between the inner ring 51 and the outer ring 52 to improve structural strength. More importantly, a filter screen 53 is installed between the inner ring 51 and the outer ring 52. The pore size selection of the filter screen 53 is crucial for the solid-liquid separation effect and needs to be optimized according to the particle size distribution of the target flocs.

[0052] The rotating shaft 3 is threaded, and the inner ring 51 of the filter plate 5 is threaded with an internal thread that matches the thread of the rotating shaft 3. This threaded connection allows the filter plate 5 to move up and down along the axial direction of the rotating shaft 3 when the rotating component 9 drives the rotating shaft 3 to rotate.

[0053] To ensure the stability and accuracy of the filter press plate 5 during axial movement, a guide member 6 is provided. The guide member 6 includes a guide groove 61 formed on the outer ring 52 and a guide block 62 fixedly disposed on the inner wall of the chemical treatment cylinder 2. The guide block 62 cooperates with the guide groove 61 to prevent the filter press plate 5 from deflecting or getting stuck during movement. The shape of the guide groove 61 and the material of the guide block 62 (e.g., a wear-resistant polymer) have been carefully designed.

[0054] When the rotating component 9 drives the rotating shaft 3 to rotate, the filter press 5 not only performs solid-liquid separation, but its outer ring 52 also closely adheres to the inner wall of the chemical treatment cylinder 2. Utilizing its movement and scraping action, it effectively cleans the precipitates and flocs adhering to the surface of the rotating shaft 3 and the inner wall of the chemical treatment cylinder 2. This self-cleaning design greatly reduces the frequency and difficulty of manual cleaning.

[0055] The cleaning auger 8 is a key component ensuring the effective discharge of impurities after flocculation; it is connected to the bottom of the chemical treatment cylinder 2. To better guide the flocculated impurities towards the auger, the bottom of the chemical treatment cylinder 2 is tapered. This tapered design utilizes gravity to concentrate the settled flocs at the lowest point, facilitating cleaning and discharge by the auger. A first bevel gear 81 is mounted on the main shaft of the cleaning auger 8, and a second bevel gear 82 is mounted on the rotating shaft 3. The first bevel gear 81 and the second bevel gear 82 mesh to transmit power. However, to achieve unidirectional operation, a one-way bearing (also called an overrunning clutch) is installed between the first bevel gear 81 and the main shaft of the cleaning auger 8, or between the second bevel gear 82 and the rotating shaft 3.

[0056] When the rotating shaft 3 rotates in a specific direction (e.g., clockwise), the one-way bearing engages, transmitting power to the cleaning auger 8, causing it to rotate and spiraling the accumulated flocculent impurities at the bottom upwards or downwards, discharging them through the outlet. When the rotating shaft 3 rotates in the opposite direction (e.g., counterclockwise, for resetting the filter press plate 5), the one-way bearing disengages, power is no longer transmitted to the cleaning auger 8, and the cleaning auger 8 remains stationary. This design avoids secondary agitation of the cleaned area during the resetting of the filter press plate 5, and also prevents the cleaning auger 8 from operating unnecessarily, extending its service life. The spiral blade design of the cleaning auger 8 should effectively push viscous flocculents. Its material also needs to be wear-resistant and corrosion-resistant. The auger's rotational speed and pitch both affect the cleaning efficiency and discharge capacity.

[0057] Working principle:

[0058] At the start of the treatment, the control system activates the feed pump. The flocculant enters the internal channel of the rotating shaft through the feed pipe and rotary sealing joint 7, and is then evenly sprayed into the wastewater to be treated in the chemical treatment cylinder 2 through the discharge port 35 on the rotating shaft. Simultaneously, the electric telescopic rod 41 is activated, and the push rod 42 moves upward, pushing the groove 44 to act on the protrusions 43 on the stirring blades 31, causing all stirring blades 31 to expand outward synchronously, reaching the extended state. The servo motor drives the rotating shaft 3 to rotate at high speed. The reciprocating rotation helps to form a complex flow field, increases the probability of particle collision, and promotes the rapid growth of flocs. In the extended state, the stirring blades 31 fully agitate the wastewater and the agent, ensuring rapid and uniform mixing and flocculation reaction. The stirring speed and time can be programmed and controlled by PLC according to the wastewater quality and flocculant characteristics. After the preset stirring time, the electric telescopic rod 41 starts in reverse, and the push rod 42 moves downward, causing the stirring blades 31 to retract, close to or hidden behind the rotating shaft 3. This measure minimizes the flocculated impurities adhering to the surface of the stirring blades 31 and provides unobstructed space for subsequent filter press operations.

[0059] After the stirring blades 31 retract, the servo motor drives the rotating shaft 3 to rotate in one direction. Since the rotating shaft 3 and the filter plate 5 are connected by threads, the filter plate 5 moves downwards along the rotating shaft 3 under the guidance of the guide block 62. During its descent, the filter screen 53 filters the flocculated water inside the cylinder, trapping the flocculent material above the screen, while clean water passes through the screen and flows downwards or is discharged. The downward speed and applied pressure of the filter plate 5 (controlled by motor torque) can be adjusted to optimize the solid-liquid separation effect. During its descent, the outer ring 52 of the filter plate 5 closely adheres to the inner wall of the chemical treatment cylinder 2, scraping away sediment and residual flocculent material adhering to the wall surface. Simultaneously, the inner ring 51 and internal thread structure of the filter plate 5 also scrape and clean the deposits on the rotating shaft 3. This synchronous cleaning mechanism effectively prevents the accumulation of impurities inside the equipment.

[0060] As the filter press plate 5 descends and the rotating shaft 3 rotates unidirectionally in a specific direction, the cleaning auger 8 starts because the bevel gear on the main shaft of the cleaning auger 8 is connected to the bevel gear on the rotating shaft 3 via a one-way bearing. The cleaning auger 8 rotates in the bottom area of ​​the conical constriction, conveying the flocculent material separated from the filter press plate 5 and the sediment scraped off from the cylinder wall and shaft through the cleaning auger 8. Finally, it is discharged from the equipment through the discharge port 35 at the bottom of the chemical treatment cylinder 2 and enters the subsequent sludge treatment system. After filtration and impurity discharge are completed, the servo motor drives the rotating shaft 3 to rotate counterclockwise. At this time, due to the separation action of the one-way bearing, the cleaning auger 8 stops rotating, avoiding secondary agitation of the discharged impurities. The filter press plate 5 then moves upward along the axial direction of the rotating shaft 3 via a threaded connection mechanism, returning to the upper part of the chemical treatment cylinder 2, ready for the next treatment cycle. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An industrial water purification device, comprising an outer casing and a water purification unit located within the casing, the water purification unit comprising a filter cartridge and a chemical treatment cartridge, characterized in that: The chemical treatment cylinder is equipped with a rotating shaft and multiple stirring blades arranged axially along the rotating shaft. The rotation center of the stirring blades is set horizontally and perpendicular to the rotating shaft. The stirring blades have an extended state and a retracted state. The rotating shaft is equipped with a pushing component for driving the stirring blades to switch between the extended and retracted states. The chemical treatment cylinder is equipped with a rotating component for driving the rotating shaft to rotate. The rotating shaft is connected to a feed pipe for spraying the agent. A hinge shaft is installed at the upper end of the stirring blade. A mounting groove is provided on the rotating shaft. The hinge shaft is rotatably mounted on the inner wall of the mounting groove. When the stirring blade is in the extended state, it extends out of the mounting groove. When the stirring blade is in the retracted state, it is located in the mounting groove. The pushing assembly includes an electric telescopic rod installed in the rotating shaft. A pushing rod is installed at the movable end of the electric telescopic rod. A protrusion facing the pushing rod is fixedly provided at the upper end of the stirring blade. A pushing groove is fixedly provided on the pushing rod. The protrusion is located in the pushing groove. When the pushing groove moves up and down, it pushes the protrusion to deflect. A filter plate is threadedly connected to the rotating shaft. The filter plate includes an inner ring and an outer ring. A filter screen and multiple reinforcing ribs are installed between the inner ring and the outer ring. The rotating shaft is threaded, and the inner ring is threaded with an internal thread that matches the thread, so that the inner ring and the rotating shaft are threadedly connected. A guide is installed between the rotating shaft and the inner wall of the chemical treatment cylinder. The guide includes a guide groove formed on the outer ring and a guide block fixedly set on the inner wall of the chemical treatment cylinder. The guide block cooperates with the guide groove. When the rotating component drives the rotating shaft to rotate, the filter press plate moves axially along the rotating shaft, and the filter press plate performs solid-liquid separation. The outer ring is in close contact with the inner wall of the chemical treatment cylinder to clean the precipitates on the rotating shaft and the inner wall of the chemical treatment cylinder. The bottom of the chemical treatment cylinder is equipped with a cleaning auger, and the main shaft of the cleaning auger is connected to the rotating shaft in a one-way transmission. A first bevel gear is installed on the main shaft of the cleaning auger, and a second bevel gear is installed on the rotating shaft. The first bevel gear and the second bevel gear mesh with each other. A one-way bearing is installed between the first bevel gear and the main shaft of the cleaning auger or between the second bevel gear and the rotating shaft.

2. The industrial water purification equipment according to claim 1, characterized in that, A torsion spring is installed between the hinge shaft of the stirring blade and the inner wall of the mounting groove. One end of the torsion spring is connected to the hinge shaft, and the other end is hinged to the inner wall of the mounting groove.

3. The industrial water purification equipment according to claim 1, characterized in that, A rotary sealing joint is installed between the rotating shaft and the feed pipe to ensure a sealed connection between the rotating shaft and the feed pipe. Multiple discharge ports are opened from top to bottom on the inner wall of the rotating shaft to ensure that the agent is evenly sprayed into the chemical treatment cylinder.

4. The industrial water purification equipment according to claim 1, characterized in that, The rotating component is a servo motor, and the rotating shaft is connected to the output end of the servo motor.

5. The industrial water purification equipment according to claim 1, characterized in that, The bottom of the chemical treatment cylinder is tapered, and the cleaning auger is connected to the bottom of the chemical treatment cylinder.

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