A kind of agitator tank for preparing cleaning solution

Abstract

The utility model discloses a kind of stirring tanks for preparing cleaning solution, belong to chemical equipment technical field.The device includes tank body, stirring device, pH monitoring module and filter system.Its characterized in that: the tank body is PE material and adopts arc transition design;The stirring device is composed of stainless steel shaft center and propeller blade wrapped by PTFE;The pH monitoring module includes adjustable height's immersion sensor;Filter system integrates PTFE folding filter core.The utility model solves the technical problems, such as pH monitoring lag, clean dead angle, system complexity and insufficient corrosion resistance, etc. existing in traditional equipment by material innovation and structure optimization, realizes real-time acidity and alkalinity monitoring, no dead angle cleaning, function integration and high corrosion resistance and other technical effects.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a stirring tank and its components for preparing cleaning solutions. Background Technology

[0002] Traditional cleaning solution mixing tanks suffer from numerous technical shortcomings in practical applications. Firstly, regarding pH monitoring, existing equipment generally employs manual sampling, which is not only cumbersome but also results in significantly delayed results, failing to reflect real-time changes in the actual pH of the reaction system. Secondly, in cleaning the mixing tank, conventional stirring devices often have dead zones, preventing sufficient contact with all parts of the container's inner wall and affecting cleaning uniformity. Furthermore, existing systems typically treat filtration as a separate module, increasing equipment complexity and potentially increasing the risk of leaks at pipe connections. Additionally, in terms of material compatibility, traditional equipment struggles to simultaneously meet the corrosion resistance requirements of high-pH solutions and carries the risk of chemical reactions with cleaning reagents, affecting cleaning effectiveness and potentially contaminating the cleaning solution. These technical deficiencies severely restrict the efficiency and quality control of the cleaning solution preparation process. Therefore, improvements to existing technologies are urgently needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a stirring tank and its components for preparing cleaning solutions, which has the advantages of real-time pH monitoring, elimination of cleaning dead zones, integrated filtration function, and improved material corrosion resistance.

[0004] This utility model provides a mixing tank and its components for preparing cleaning solutions. The technical solution is as follows: The mixing tank includes a tank body, a stirring device, a pH monitoring module, and a filtration system. The tank body is made of PE material and adopts a rounded transition design. The stirring device consists of a motor, a stirring shaft, and a paddle. The pH monitoring module consists of an immersion pH sensor, a waterproof signal transmission interface, a control module, and a digital display screen. The filtration system consists of a filter element and a motor.

[0005] Furthermore, this utility model also proposes that a liquid level display window be provided on the outside of the tank, with a liquid level range of 20-100L.

[0006] Furthermore, this utility model also proposes that the top of the tank has a feeding port, is equipped with a splash-proof funnel, and the bottom has a cleaning port.

[0007] Furthermore, this invention also proposes that the stirring shaft is composed of a stainless steel shaft core wrapped with PTFE.

[0008] Furthermore, this utility model also proposes that the impeller is a PTFE spiral agitator.

[0009] Furthermore, this invention also proposes that the pH sensor detection end has an adjustable vertical height, with an adjustment range of 20-100L for liquid level.

[0010] Furthermore, this utility model also proposes that the filter element is a PTFE pleated filter element.

[0011] Furthermore, this utility model also proposes that the filter element is detachable and replaceable, and the filter pore diameter is 0.1-0.5μm.

[0012] As can be seen from the above, the present invention provides a stirring tank and its components for preparing cleaning solutions. By integrating a pH monitoring module to provide real-time feedback of acidity and alkalinity data, using PTFE material to improve corrosion resistance, optimizing the tank structure to eliminate cleaning dead corners, and incorporating a built-in filtration system to simplify the equipment structure, it has the advantages of real-time pH monitoring, elimination of cleaning dead corners, integrated filtration function, and improved material corrosion resistance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] In the diagram: 1. Tank; 2. Agitator; 3. pH monitoring module; 4. Filtration system; 5. Liquid level display window; 6. Feed port; 7. Cleaning port; 8. Agitator shaft; 9. Paddles; 10. pH sensor; 11. Agitator motor. Detailed Implementation

[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0016] Traditional equipment relies on manual sampling for pH testing, which leads to data lag and affects the accuracy of reaction control; it cannot cover the corners of the container during cleaning, resulting in stubborn stains; independent filtration devices require additional operating steps, increasing equipment maintenance costs; and ordinary metal materials are prone to chemical reactions in highly corrosive solutions, shortening the equipment's lifespan.

[0017] To address these issues, researchers discovered that the fragmented functional modules of traditional equipment were the root cause of its low efficiency. Analysis revealed that a time lag existed between manual inspection and mixing operations, preventing closed-loop control; unsanitary areas existed during tank rinsing; separate filtration devices required shutdown and material transfer, interrupting the production process; and metal components suffered electrochemical corrosion in strong acid and alkali environments. Based on this, the design approach shifted to building an integrated system: embedding detection elements into the reaction vessel for in-situ monitoring, optimizing the mixing structure using a fluid dynamics model, incorporating a built-in filtration module for continuous operation, and selecting chemically inert materials to ensure equipment stability.

[0018] This invention proposes a cleaning solution preparation device comprising a tank 1, a stirring device 2, a pH monitoring module 3, and a filtration system 4. The tank 1 is equipped with a liquid level display window 5, a feeding port 6, and a cleaning port 7; the stirring device 2 is driven by a motor 11 to rotate the stirring shaft and the impeller; the pH monitoring module 3 includes an immersion sensor, a waterproof interface, a control unit, and a display screen; the filtration system 4 includes a filter element and a drive mechanism.

[0019] This application further proposes that the tank body 1 is made of PE material and that the transition section of the inner wall of the tank is a rounded transition.

[0020] PE material refers to polyethylene, specifically high-density polyethylene injection molding, which has chemical stability capable of withstanding corrosion from high-pH solutions. The rounded transition refers to the curved structure at the connection point of the tank's inner wall, specifically using an arc-shaped surface design with a radius greater than 5mm to eliminate fluid stagnation in right-angle areas and facilitate cleaning.

[0021] Specifically, by choosing PE material instead of traditional stainless steel or fiberglass, the strong alkaline components in the cleaning solution can be avoided from corroding the tank, thus extending the equipment's service life. The inner wall transition section adopts an arc transition design, which allows the liquid to form a continuous flow path during stirring, avoiding dirt deposition in right-angle areas due to reduced flow velocity, thereby solving the cleaning dead corner problem existing in traditional reactors.

[0022] This application further proposes that the tank body 1 is provided with a feeding port 6 at the top and equipped with a splash-proof funnel, and a cleaning port 7 at the bottom.

[0023] The feed port 6 refers to the opening structure located at the top of the tank, which can be a circular opening with a flange connection, used to inject raw materials into the tank. The anti-splash funnel is a flow guiding device installed at the feed port, which can be a conical structure with an inclined inner wall; its function is to reduce splashing by guiding the liquid flow. The cleaning port 7 refers to the discharge channel located at the bottom of the tank, which can be a tubular interface with a valve control, used to discharge waste liquid and clean residue.

[0024] Specifically, the combination of the feed port and the anti-splash funnel constrains the flow path of the liquid during injection, and the inclined inner wall forces the liquid to flow into the tank in a specific direction, avoiding splashing caused by impact. The cleaning port connects directly to the inside of the tank through the bottom. During the cleaning process, opening the valve allows residual liquid and impurities to be completely discharged along the direction of gravity, completing the cleaning without disassembling the tank. The rounded transition design of the inner wall of the tank further eliminates sharp corner areas, allowing the liquid to flow unimpeded and preventing residue from forming at the corners, thus solving the problem of incomplete cleaning caused by the structural limitations of traditional equipment. This application further proposes to install a liquid level display window 5 on the outside of the tank 1, with a liquid level range of 20-100L.

[0025] The liquid level display window 5 is a transparent observation structure, specifically made of corrosion-resistant polycarbonate material and sealed to the tank side wall. Externally visible scale markings correspond to the actual internal liquid level. The liquid level range of 20-100L refers to the calibration range of the display window, which can be achieved by covering this range with preset capacity scale lines, ensuring that liquid level changes remain observable during tank operation. Specifically, the liquid level display window 5 is integrated into the tank side wall, with its transparent area in direct contact with the internal liquid. Operators can determine the current capacity by observing the liquid level's position on the scale lines. The calibration range of the display window matches the tank's design volume, allowing liquid level monitoring without interrupting the stirring process or opening the tank, thus avoiding the risk of solution contamination. This solution achieves real-time monitoring through physical structure, solving the efficiency problems and cross-contamination risks associated with traditional technologies that rely on manual intervention.

[0026] This application further proposes that the stirring shaft 8 is composed of a stainless steel shaft wrapped with polytetrafluoroethylene.

[0027] In this context, PTFE (polytetrafluoroethylene) coating refers to covering the surface of a stainless steel shaft with PTFE material through molding or spraying processes, forming a continuous and dense insulating layer to prevent corrosive media from contacting the metal substrate. The stainless steel shaft refers to a cylindrical structural component made of austenitic stainless steel, used to provide the mechanical strength and rigid support required for stirring.

[0028] Specifically, the PTFE (polytetrafluoroethylene) coating, through its chemical inertness, forms a physical barrier on the surface of the agitator shaft, preventing high-pH cleaning solutions from penetrating into the stainless steel substrate and avoiding chemical reactions between the metal materials and the strongly alkaline medium. The stainless steel shaft, as the internal support structure, can withstand the torque and bending stress during agitation, while the PTFE coating, through surface modification, eliminates the risk of metal ion leaching, thus maintaining the long-term stability of the agitator shaft in corrosive environments. This composite structure achieves synergistic optimization of corrosion resistance and mechanical properties through material complementarity.

[0029] This application further proposes that blade 9 is a PTFE spiral agitator.

[0030] The PTFE spiral impeller refers to a stirring component with a spiral structure made of polytetrafluoroethylene (PTFE). This is achieved through injection molding, where PTFE material is processed into a continuous spiral curved surface. The high chemical inertness of this material allows it to withstand strong acid and alkali environments, preventing reactions with cleaning solutions. The spiral structure refers to the continuous spiral grooves formed on the impeller surface, which can be achieved by molding a helix with a specific pitch. This structure generates axial and radial composite fluid motion during rotation, enhancing liquid shear force and reducing the stirring blind zone. Simultaneously, controlling the motor's stirring speed reduces the generation of eddies during stirring.

[0031] Specifically, the choice of PTFE spiral impeller material is based on the stable carbon-fluorine bond in its molecular structure, preventing ion exchange or oxidation reactions in high-pH solutions. The spiral blades propel the liquid axially during rotation, reducing unstirred areas within the container. The PTFE material completely encapsulates the impeller surface, isolating the metal shaft from corrosive liquids and preventing electrochemical corrosion.

[0032] This application further proposes that the detection end of the pH sensor 10 can be adjusted vertically, with an adjustment range of 20-100L for liquid level.

[0033] The adjustable height of the detection end refers to the linear displacement adjustment of the sensor probe's vertical position. This is achieved using a graduated slide rail assembly with a locking nut. This design allows the sensor to adjust to the optimal detection position based on changes in liquid level. Specifically, the pH sensor is screwed into the pre-drilled mounting hole in the tank via a threaded interface. The rubber sealing ring deforms under pressure to form a radial seal. The slide rail assembly is fixed to the sensor housing, and the probe immersion depth is adjusted manually by sliding it. The locking nut secures the sensor in the selected position. When the liquid level fluctuates between 20-100L, the operator can change the probe immersion depth via an external adjustment mechanism without opening the container, thus continuously acquiring pH data for the current liquid layer. This allows the sensor to perform continuous monitoring across the entire liquid level range while operating, without interrupting the cleaning process or contact with corrosive liquids.

[0034] This application further proposes that the filter element is a PTFE pleated filter element, which is removable and replaceable, and the filter pore diameter is 0.1-0.5μm.

[0035] Through the above technical solution, this application achieves long-term stable operation of the filtration system in a high-pH cleaning solution environment, avoiding media contamination problems caused by filter element corrosion. The folded structure completes efficient filtration within a limited space, reducing the overall complexity of the equipment and decreasing the frequency of filter element replacement during maintenance.

[0036] Specifically, tank 1 serves as the reaction vessel for the preparation of the cleaning solution. The stirring device 2, driven by a motor, rotates the stirring shaft and propeller blades, creating three-dimensional fluid motion to eliminate blind spots in the stirring process. An immersion pH sensor continuously collects solution pH data, which is transmitted via a waterproof interface to the control module for processing and real-time display on a digital screen for operation monitoring. The filtration system 4 operates synchronously during the stirring process; its drive mechanism rotates the filter element to achieve continuous filtration, trapping undissolved particles and preventing secondary contamination. The stainless steel stirring shaft provides sufficient structural strength, and its surface anti-corrosion layer isolates it from chemical corrosion; the propeller blades enhance liquid circulation, eliminating sediment at the bottom of the tank. All functional modules are structurally integrated and interconnected via signals, forming a collaborative working mechanism of detection, stirring, and filtration.

[0037] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A mixing tank for formulating a cleaning solution, comprising: The tank, stirring device, pH monitoring module, and filtration system are characterized in that: the tank is made of PE material and adopts a rounded transition design; the stirring device consists of a motor, a stirring shaft, and impellers; the pH monitoring module consists of an immersion pH sensor, a waterproof signal transmission interface, a control module, and a digital display screen; and the filtration system consists of a filter element and a motor.

2. The stirring tank for preparing cleaning solution according to claim 1, characterized in that, The tank is equipped with a liquid level display window on its exterior, with a liquid level range of 20-100L.

3. The stirring tank for preparing cleaning solution according to claim 1, characterized in that, The tank has a feeding port at the top, a splash-proof funnel, and a cleaning port at the bottom.

4. The stirring tank for preparing cleaning solution according to claim 1, characterized in that, The stirring shaft is composed of a stainless steel shaft wrapped with PTFE.

5. The stirring tank for preparing cleaning solution according to claim 1, characterized in that, The impeller is a PTFE spiral agitator.

6. The stirring tank for preparing cleaning solution according to claim 1, characterized in that, The pH sensor detection end is adjustable in height, with an adjustment range of 20-100L for liquid levels.

7. The stirring tank for preparing cleaning solution according to claim 1, characterized in that: The filter element is a PTFE pleated filter element.

8. The stirring tank for preparing cleaning solution according to claim 1, characterized in that: The filter element is removable and replaceable, and the pore size is 0.1-0.5μm.

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