Emulsion stirring device

Abstract

The utility model discloses an emulsion stirring device which comprises an outer tank body, an inner tank body and a tank cover, the inner tank body is arranged in the outer tank body, the top of the outer tank body is connected with the tank cover through a flange bolt, the bottom of the tank cover is rotatably connected with a stirring mechanism, the bottom of the tank cover is fixedly connected with a flow dividing chamber, and the flow dividing chamber is fixedly connected with a stirring mechanism. A three-layer stirring system of wall scraping of the linear stirring piece, circulation of the helical ribbon type stirring piece and shearing of the dispersing disc is adopted, the upper area, the middle area and the lower area of the tank body are covered, the stirring effect is good, and the stirring effect is good. A forced convection path of ascending in the cylinder and descending in an annular space is formed in cooperation with a fixed flow guide cylinder, the design that a flow dividing chamber is combined with an annular flow dividing opening is adopted, flowing of a high-viscosity auxiliary agent is accelerated through gravity, circumferential uniform adding is achieved in cooperation with a pneumatic diaphragm pump, and the outer tank body and the inner tank body are detachably designed, so that the time for maintaining the heating bin and cleaning the inner tank body is shortened.

Description

Technical Field

[0001] This utility model mainly relates to the field of silane pretreatment technology, specifically an emulsion stirring device. Background Technology

[0002] Silane pretreatment is a metal surface treatment process based on the chemical properties of silane. It forms a nanoscale protective film on the metal surface through silane coupling agents, replacing the traditional phosphating process and achieving the goals of metal corrosion protection and improved coating adhesion.

[0003] Emulsion mixing equipment is the core equipment in the silane pretreatment process for preparing high-performance edge protection additives. Its function is to achieve uniform mixing, stable dispersion and edge strengthening of amino-epoxy resins and silane emulsions by precisely controlling the mixing flow field, temperature conditions and material addition path. Most equipment uses a single stirring blade and lacks the ability to stir in layers, resulting in the upper material sticking to the wall, bottom particles settling, and uneven distribution of additives in the edge area. Moreover, when adding additives later, a single-pipe injection method is often used, resulting in insufficient replenishment of additives in the edge area. Utility Model Content

[0004] This utility model addresses the problem of overly simplistic existing technical solutions by providing an emulsion stirring device. This device solves the technical problems mentioned in the background section, such as the lack of stratified stirring capability due to the use of a single stirring blade, resulting in upper material sticking to the wall, bottom particle sedimentation, and uneven distribution of additives in the edge area.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An emulsion stirring device includes an outer tank, an inner tank, and a lid. The inner tank is disposed inside the outer tank. The top of the outer tank is connected to the lid by flange bolts. A stirring mechanism is rotatably connected to the bottom of the lid. A flow distribution chamber is fixedly connected to the bottom of the lid. A guide tube is disposed below the flow distribution chamber. The top of the guide tube passes through the axis of the flow distribution chamber and is fixedly connected to the bottom of the lid.

[0007] The stirring mechanism includes a straight stirring element, a ribbon stirring element, and a dispersing disc. The dispersing disc is located below the ribbon stirring element and is coaxially connected to it. The guide cylinder is sleeved on the outside of the ribbon stirring element.

[0008] Furthermore, the outer tank has a threaded hole on its inner wall near the tank opening for bolt connection with the inner tank, and an independent cavity for circulating coolant is formed between the outer tank and the inner tank, with coolant circulation pipes distributed vertically on one side of the independent cavity.

[0009] Furthermore, an annular bottom mounting bracket is fixedly connected to the inner tank near the bottom. An annular groove is opened inside the bottom mounting bracket, and an adhesive strip that engages with the annular groove is embedded in the bottom of the outer wall of the inner tank at the position corresponding to the annular groove. A heating chamber is fixedly installed on the outer wall of the inner tank at equal angles along the circumference.

[0010] Furthermore, both the outer tank and the inner tank are provided with discharge pipes at the bottom axis. The diameter of the discharge pipe at the bottom of the inner tank is smaller than that of the discharge pipe at the bottom of the outer tank. The discharge pipe at the bottom of the inner tank is sleeved inside the discharge pipe at the bottom of the outer tank. A ball valve is provided on the discharge pipe at the bottom of the outer tank.

[0011] Furthermore, the top of the tank lid is provided with a power mechanism for driving the stirring mechanism, and the spiral-type stirring component and the dispersing disc are fixedly installed on the circular base through a shaft. The top of the circular base is fixedly connected to the output end of the power mechanism. The straight stirring component is distributed at a 120° angle along the circumference of the circular base and is distributed at a 30° angle to the plane of the circular base, and is distributed inside the inner tank.

[0012] Furthermore, the guide tube includes a connecting end with a flange and a cylinder body. The cylinder body is hollow and located between the straight agitator and the ribbon agitator. The connecting end with the flange passes through the slot opened in the circular base of the agitator and is fixedly connected to the bottom of the tank cover by bolts. A cavity is provided at its axis for rotating and connecting the shaft of the agitator.

[0013] Furthermore, the diversion chamber has a tapered structure that is wider at the top and narrower at the bottom, and the diversion ports are distributed in annular equiangular arrangement at the bottom of the diversion chamber. The top of the diversion chamber has a port for connecting to the auxiliary agent replenishment storage device. The diversion chamber and the auxiliary agent replenishment storage device are connected by a pipe and a pneumatic diaphragm pump.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. A three-layer mixing system is adopted, consisting of a straight-line agitator for wall scraping, a spiral agitator for circulation, and a dispersion disc for shearing. This system covers the entire upper, middle, and lower areas of the tank. Combined with a fixed guide tube, it forms a forced convection path of "rising inside the tube → descending in the annular gap," eliminating the stagnation blind zone of traditional single-blade agitators. The silicone scraping end of the upper straight-line agitator reduces residual volume, the middle spiral agitator and guide tube work together to achieve axial circulation, and the lower dispersion disc achieves high-shear crushing in the bottom sedimentation zone. The shearing intensity can be dynamically adjusted according to the rotation speed of the power mechanism. Through the synergistic effect of different areas, the mixing time is shortened.

[0016] 2. The design of the diversion chamber combined with the annular diversion port utilizes gravity to accelerate the flow of high-viscosity additives. Combined with a pneumatic diaphragm pump, it achieves uniform circumferential addition, solving the problem of "concentrated in the center and sparse at the edges" in traditional single-pipe addition. Furthermore, the detachable design of the outer and inner tanks shortens the maintenance time of the heating chamber and the cleaning time of the inner tank. In addition, the dual temperature sensors and independent coolant circulation chamber improve temperature control accuracy and avoid the problems of uneven heat conduction and time-consuming maintenance of traditional integrated tanks.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the outer tank of this utility model;

[0020] Figure 3 This is a schematic diagram of the top structure of the can lid of this utility model;

[0021] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the bottom structure of the can lid of this utility model;

[0023] Figure 6 This is a schematic diagram of the internal structure of the diversion chamber of this utility model;

[0024] Numbering on the map:

[0025] 1. Outer tank; 2. Inner tank; 3. Tank lid; 4. Stirring mechanism; 401. Straight-line stirrer; 402. Spiral stirrer; 403. Dispersion disc; 5. Flow guide tube; 6. Diversion chamber; 7. Diversion port; 8. Additive replenishment storage; 9. Bottom mounting bracket; 10. Heating chamber. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Please refer to the appendix carefully. Figure 1-6 An emulsion stirring device includes an outer tank 1, an inner tank 2, and a tank cover 3. The inner tank 2 is disposed inside the outer tank 1. The top of the outer tank 1 is connected to the tank cover 3 by flange bolts. A stirring mechanism 4 is rotatably connected to the bottom of the tank cover 3. A flow distribution chamber 6 is fixedly connected to the bottom of the tank cover 3. A guide tube 5 is disposed below the flow distribution chamber 6. The top of the guide tube 5 passes through the axis of the flow distribution chamber 6 and is fixedly connected to the bottom of the tank cover 3.

[0029] The stirring mechanism 4 includes a straight stirring element 401, a ribbon stirring element 402, and a dispersing disc 403. The dispersing disc 403 is located below the ribbon stirring element 402 and is coaxially connected. The guide cylinder 5 is sleeved on the outside of the ribbon stirring element 402.

[0030] In this embodiment, as Figure 1 and Figure 2 As shown, the inner wall of the outer tank 1 has a threaded hole near the tank opening for bolt connection with the inner tank 2. The outer tank 1 and the inner tank 2 form an independent cavity for circulating coolant. The outer tank 1 has coolant circulation pipes distributed vertically on one side of the independent cavity. The top of the tank cover 3 has a feed pipe that extends to the bottom of the tank cover 3 and is located at one end of the diversion chamber 6.

[0031] The above structure, with its detachable outer tank 1 and inner tank 2, improves the daily maintainability of the inner tank 2. Combined with the pre-reserved circulation pipes in the outer tank 1 for connecting the cooling medium, it can achieve the beneficial effect of rapid cooling.

[0032] In this embodiment, as Figure 2 As shown, an annular bottom mounting bracket 9 is fixedly connected to the bottom of the outer tank 1. An annular groove is opened inside the bottom mounting bracket 9. A rubber strip that fits into the annular groove is embedded at the bottom of the outer wall of the inner tank 2. A heating chamber 10 is fixedly installed at equal angles along the circumference of the outer wall of the inner tank 2. An electric heating tube is installed inside the heating chamber 10. The inner tank 2 is made of a metal material with good thermal conductivity. In order to facilitate accurate temperature control, temperature sensors are installed in the cavity between the outer tank 1 and the inner tank 2 and on the inner wall of the inner tank 2.

[0033] With the above structure, when the inner tank 2 is installed, its bottom rubber strip is inserted into the bottom mounting bracket 9 inside the outer tank 1 to form a seal, preventing the coolant in the interlayer between the outer tank 1 and the inner tank 2 from leaking into the discharge chamber. The inner tank 2 is made of 316L stainless steel with high thermal conductivity. The heat generated by the electric heating tube is evenly transferred to the material inside in a short time. Compared with directly heating the raw materials, it can avoid corrosion of the electric heating element or contamination of the material, and it is also more uniform.

[0034] In this embodiment, as Figure 2 As shown, both the outer tank 1 and the inner tank 2 have discharge pipes at their bottom axes. The diameter of the discharge pipe at the bottom of the inner tank 2 is smaller than that at the bottom of the outer tank 1. The discharge pipe at the bottom of the inner tank 2 is sleeved inside the discharge pipe at the bottom of the outer tank 1. A ball valve is installed on the discharge pipe at the bottom of the outer tank 1. The detachable design of the inner tank 2 and the outer tank 1 facilitates maintenance of the heating chamber 10 outside the inner tank 2. The structure of the bottom pipe openings of the inner tank 2 and the outer tank 1 allows for control of subsequent material discharge after the inner tank 2 is installed with the outer tank 1.

[0035] With the above structure, the difference in diameter between the inner tank 2 discharge pipe and the outer tank 1 pipe can form a clearance fit, allowing the inner tank 2 to fall freely through the outer pipe axis during installation without the need for precise alignment. Furthermore, the ball valve on the outer tank 1 pipe will not cause leakage of internal raw materials.

[0036] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, the top of the can lid 3 is provided with a power mechanism for driving the stirring mechanism 4, and the ribbon stirring component 402 and the dispersing disc 403 are fixedly installed on the circular base by a shaft. The top of the circular base is fixedly connected to the output end of the power mechanism. The straight stirring component 401 is distributed at a 120° angle along the circumference of the circular base and is distributed at a 30° angle to the plane of the circular base. It is distributed inside the inner can 2. The straight stirring component 401 is made of silicone material at the end near the inner wall of the inner can 2.

[0037] Through the above structure, the silicone has an elastic buffering effect. When it comes into contact with the inner wall of the inner tank 2, it can ensure that the polished layer of the inner wall of the inner tank 2 is not scratched and damaged, thus extending the service life of the equipment. The dispersion disk 403 is located at the bottom center of the inner tank 2, covering the "bottom sedimentation zone" of traditional stirring. Its edge serrated structure generates a high shear force field, which can quickly break up amino-epoxy resin particles.

[0038] The ribbon agitator 402 works in conjunction with the guide tube 5 to drive the material to be drawn in from the bottom and discharged from the top of the guide tube 5, forming an axial circulation flow and eliminating radial concentration stratification.

[0039] The 401 straight agitator is circumferentially distributed at a 120° angle. When rotating, it forms a full-circumferential wall scraper to remove material adhering to the wall and reduce the amount of residue.

[0040] In this embodiment, as Figure 3 and Figure 4 As shown, the guide tube 5 includes a connecting end with a flange and a cylinder body. The cylinder body is hollow and is located between the straight agitator 401 and the ribbon agitator 402. The connecting end with the flange passes through the slot opened in the circular base of the agitator 4 and is fixedly connected to the bottom of the tank cover 3 by bolts. A cavity is provided at its axis for rotating and connecting the shaft of the agitator 4. A gap is left between the cavity of the guide tube 5 and the agitator shaft.

[0041] With the above structure, the guide tube 5 includes a cavity with a flanged connection end, which can be effectively fixed to the bottom of the tank cover 3, while ensuring the effective connection between the power mechanism and the stirring mechanism 4 above the tank cover 3. The guide tube 5 does not rotate with the stirring mechanism 4. Its inner wall serves as a fixed boundary, forcing the material to circulate along the path of "rising inside the tube → falling in the annular gap". It is effectively fixed to the tank cover 3 by means of the flanged connection end at the top, ensuring its support.

[0042] In this embodiment, as Figure 5 and Figure 6 As shown, the diversion chamber 6 has a tapered structure that is wider at the top and narrower at the bottom, and the diversion ports 7 are distributed in annular shape at equal angles at the bottom of the diversion chamber 6. The top of the diversion chamber 6 has a pipe opening for connecting to the auxiliary agent replenishment storage 8. The diversion chamber 6 and the auxiliary agent replenishment storage 8 are connected by a pipe and a pneumatic diaphragm pump. The top of the diversion chamber 6 has a circular through hole for penetrating the flanged connection end of the guide tube 5, which can ensure that the flanged connection end of the guide tube 5 can be effectively fixed to the bottom of the tank cover 3.

[0043] Through the above structure, the conical structure of the diversion chamber 6 uses gravitational potential energy to accelerate the high viscosity additive to the bottom, increase the fluid flow speed, and discharge it through the large-diameter diversion port 7. Compared with the problem of "concentrated in the center and sparse at the edge" caused by adding additives through a traditional single pipe, the diversion port 7 can inject additives from multiple directions at the same time, directly covering the entire circumference of the inner tank 2.

[0044] The specific operating procedure of this utility is as follows: First, the feed pipe at the top of the tank cover 3 is connected to the external feeding equipment, and silane emulsion and auxiliary amino-epoxy resin are injected into the inner tank 2 in sequence. According to the process requirements, the inner tank 2 is preheated to the target temperature through the heating chamber 10. The temperature sensor monitors the inner wall temperature of the inner tank 2 in real time to ensure that it matches the temperature required for silane hydrolysis.

[0045] Start the power mechanism on top of the tank lid 3. The stepper motor drives the circular chassis to rotate, which in turn drives the coaxial straight agitator 401, the ribbon agitator 402, and the dispersion disc 403 to rotate synchronously.

[0046] The dispersion disc 403 is located at the bottom and center of the inner tank 2. Its serrated edges generate high shear force to break up additive particles or emulsion agglomerates, making it particularly suitable for the initial dispersion of amino-epoxy resins.

[0047] The ribbon agitator 402 works in conjunction with the guide tube 5 fitted around it. By rotating, it pushes the material to be drawn in from the bottom of the guide tube 5 and then discharged from the top of the guide tube 5. Compared with the shortcomings of traditional paddles, which are prone to uneven concentration at the top and bottom, it can form convection through the top and bottom circulation, eliminate radial stratification, and thus increase the mixing rate of the material.

[0048] The straight agitator 401 is distributed at a 120° angle. The end of it that is in contact with the inner wall of the inner tank 2 is made of silicone. The silicone scraper end is in close contact with the inner wall of the inner tank 2, which can effectively scrape off the raw materials attached to the inner wall without abrading it. At the same time, the 30° tilt design generates axial force, which pushes the upper material to flow downward, enhances the convection between the upper and lower layers. In addition, the staggered layout can achieve all-round and multi-point scraping of the inner wall of the tank 2.

[0049] When the temperature sensor in the inner tank 2 provides real-time temperature feedback, if the temperature exceeds the critical value for emulsion demulsification, the outer tank 1 can automatically introduce cold water to cool it down through the external pipes for coolant circulation, ensuring that the temperature deviation is ≤±1℃. A temperature sensor is also installed in the interlayer between the outer tank 1 and the inner tank 2, which helps staff to quickly know the temperature of the cooling medium in the interlayer.

[0050] The viscometer on the top of the can lid 3 monitors the viscosity of the material in real time. When the amino-epoxy resin is completely dispersed and reaches a stable viscosity value, silane needs to be added by spraying in the later stage of stirring to ensure sufficient silane concentration in the edge area and enhance edge adhesion. Traditional stirring equipment would convey the material through the feed pipe or open the top cover. This device is equipped with an auxiliary agent replenishment storage 8, which is made of double-layer tempered glass and has numerical tables engraved on the outer wall. When the pneumatic diaphragm pump is turned on, the auxiliary agent in the auxiliary agent replenishment storage 8 is evenly distributed to the bottom annular distribution port 7 through the distribution chamber 6 and flows down into the inner tank 2, where it is rapidly diffused in conjunction with the components of the stirring mechanism 4.

[0051] After the mixing process is completed, open the ball valve at the bottom of the outer tank 1. The discharge pipe at the bottom of the inner tank 2 will discharge the mixture into the discharge pipe of the outer tank 1, and finally discharge it through the discharge pipe of the outer tank 1.

[0052] The inner tank 2 is detachable. After removing the tank cover 3 from the top of the outer tank 1, the bolts connecting the inner tank 2 and the outer tank 1 can be removed for separate cleaning.

[0053] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An emulsion stirring device, comprising an outer tank (1), an inner tank (2), and a tank lid (3), characterized in that: The outer tank (1) is provided with an inner tank (2). The top of the outer tank (1) is connected to the tank cover (3) by flange bolts. The bottom of the tank cover (3) is rotatably connected to a stirring mechanism (4). The bottom of the tank cover (3) is fixedly connected to a flow divider (6). A flow guide (5) is provided below the flow divider (6). The top of the flow guide (5) passes through the axis of the flow divider (6) and is fixedly connected to the bottom of the tank cover (3). The stirring mechanism (4) includes a straight stirring element (401), a ribbon stirring element (402) and a dispersing disc (403). The dispersing disc (403) is located below the ribbon stirring element (402) and coaxially connected. The guide tube (5) is sleeved on the outside of the ribbon stirring element (402).

2. The emulsion stirring device according to claim 1, characterized in that: The outer tank (1) has a threaded hole on its inner wall near the tank opening for connecting with the inner tank (2) by bolts. The outer tank (1) and the inner tank (2) form an independent cavity for circulating coolant. The outer tank (1) has coolant circulation pipes distributed vertically on one side of the independent cavity.

3. The emulsion stirring device according to claim 1, characterized in that: An annular bottom mounting bracket (9) is fixedly connected to the bottom of the outer tank (1). An annular groove is provided inside the bottom mounting bracket (9). A rubber strip that fits into the annular groove is embedded at the bottom of the outer wall of the inner tank (2). A heating chamber (10) is fixedly installed at equal angles along the circumference of the outer wall of the inner tank (2).

4. The emulsion stirring device according to claim 1, characterized in that: Both the outer tank (1) and the inner tank (2) have discharge pipes at their bottom axes. The diameter of the discharge pipe at the bottom of the inner tank (2) is smaller than that at the bottom of the outer tank (1). The discharge pipe at the bottom of the inner tank (2) is sleeved inside the discharge pipe at the bottom of the outer tank (1). A ball valve is installed on the discharge pipe at the bottom of the outer tank (1).

5. The emulsion stirring device according to claim 1, characterized in that: The top of the tank cover (3) is provided with a power mechanism for driving the stirring mechanism (4), and the ribbon stirring component (402) and the dispersing disc (403) are fixedly installed on the circular base by a shaft. The top of the circular base is fixedly connected to the output end of the power mechanism. The straight stirring component (401) is distributed at a 120° angle along the circumference of the circular base and is distributed at a 30° angle to the plane of the circular base, inside the inner tank (2).

6. The emulsion stirring device according to claim 1, characterized in that: The guide tube (5) includes a connecting end with a flange and a cylinder body. The cylinder body is hollow and located between the straight agitator (401) and the ribbon agitator (402). The connecting end with the flange passes through the slot opened in the circular base of the agitator (4) and is fixedly connected to the bottom of the tank cover (3) by bolts. A cavity is provided at its axis for rotating and connecting the shaft of the agitator (4).

7. The emulsion stirring device according to claim 1, characterized in that: The diversion chamber (6) has a tapered structure that is wider at the top and narrower at the bottom, and the diversion ports (7) are distributed in an annular shape at equal angles at the bottom of the diversion chamber (6). The top of the diversion chamber (6) has a pipe opening for connecting with the auxiliary agent replenishment storage (8). The diversion chamber (6) and the auxiliary agent replenishment storage (8) are connected by a pipe and a pneumatic diaphragm pump.

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