Pressure-sensitive adhesive mixing tank

Abstract

The utility model relates to chemical industry stirring equipment technical field discloses a pressure sensitive adhesive stirring tank, including support, the support upper surface fixedly connected with stirring kettle, the stirring kettle upper surface fixedly connected with feed pipe, the inside setting of feed pipe is provided with adjusting assembly, adjusting assembly includes sliding plate no.

Description

Technical Field

[0001] This utility model relates to the field of chemical mixing equipment technology, and in particular to a pressure-sensitive adhesive mixing tank. Background Technology

[0002] Pressure-sensitive adhesives (PSAs) are widely used in labeling, electronics, packaging, and medical fields due to their excellent adhesion, good operability, and broad industrial applications. The performance of PSAs largely depends on the uniformity of mixing and the control of material proportions during their preparation. Therefore, the mixing tank, as a key piece of equipment in the production process, plays a crucial role in the mixing quality, material reaction conditions, and stability. Modern PSA mixing equipment is increasingly developing towards automation and precision to improve product consistency and production efficiency, meeting the needs of high-performance colloidal material preparation.

[0003] Existing pressure-sensitive adhesive mixing tank structures mainly include a mixing vessel, a stirring paddle, a motor drive system, and material inlet / outlet channels. The stirring paddle, driven by a motor, rotates at high speed to uniformly mix the high-viscosity materials within the tank. Some units are equipped with a temperature control system to maintain the thermal environment required for the reaction, ensuring thorough mixing of the components. The mixing tank has a feed inlet on the top or side wall, typically used in conjunction with a pipeline or pumping system to inject raw materials, which are then discharged through the bottom discharge port. Its structural design emphasizes corrosion resistance, sealing, and ease of cleaning to meet the process requirements of various active components in pressure-sensitive adhesive formulations.

[0004] However, in current mixed tank structures, the feed pipes mostly lack effective flow regulation mechanisms, making the material injection rate uncontrollable and prone to causing sudden increases in local raw material concentrations at certain times. This uneven concentration often leads to insufficient mixing of materials within the tank, affecting reaction equilibrium and reducing the adhesion and stability of the product. In processes requiring high formulation precision or strong reactivity, it may also cause local overheating or reaction failure. Therefore, traditional feeding methods have certain shortcomings in terms of refined control, restricting the consistency and reliability of pressure-sensitive adhesive preparation. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pressure-sensitive adhesive mixing tank, which aims to improve the existing structure's lack of a flow regulation structure at the feed pipe, which leads to difficulties in controlling the material injection speed, excessively high local concentrations, uneven mixing, or unstable reactions.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressure-sensitive adhesive mixing tank, including a support, a mixing vessel fixedly connected to the upper surface of the support, a feed pipe fixedly connected to the upper surface of the mixing vessel, and an adjustment component provided inside the feed pipe;

[0007] The adjusting assembly includes a sliding plate 1, which is disposed inside the feed pipe. A flow limiting box is fixedly connected to the inner wall of the feed pipe. A flow limiting plate is fixedly connected to the upper surface of the flow limiting box. A connecting rod 2 is fixedly connected to the inner wall of the flow limiting box. Two racks 2 are slidably connected to the outer wall of the connecting rod 2. The outer walls of the two racks 2 are fixedly connected to the inner wall of the sliding plate 1. Two gears are rotatably connected to the inner wall of the flow limiting box. The two gears mesh with the two racks 2 respectively. A fixing plate is fixedly connected to the outer wall of the feed pipe. A threaded rod is threadedly connected to the inner wall of the fixing plate. A rack 1 is rotatably connected to one end of the threaded rod. The outer wall of the rack 1 meshes with the two gears respectively.

[0008] Furthermore, a motor is fixedly connected to the upper surface of the mixing vessel, a stirring shaft is fixedly connected to the output end of the motor, a connecting plate is fixedly connected to the outer wall of the stirring shaft, a connecting rod is fixedly connected to the outer wall of the connecting plate, a spiral stirring blade and a turbine stirring blade are fixedly connected to the outer wall of the stirring shaft, a connecting column is fixedly connected to the outer wall of the connecting rod, a spring is fixedly connected to the inner wall of the connecting column, a sliding plate is fixedly connected to one end of the spring, and a scraper is fixedly connected to the outer wall of the sliding plate.

[0009] Furthermore, an air inlet pipe is fixedly connected to the outer wall of the mixing vessel, and a connecting pipe is fixedly connected to one end of the air inlet pipe.

[0010] Furthermore, an air pump is fixedly connected to one end of the connecting pipe, and an inner liner is provided inside the stirring vessel.

[0011] Furthermore, an inlet pipe is fixedly connected to the outer wall of the stirred tank, and an outlet pipe is fixedly connected to the outer wall of the stirred tank.

[0012] Furthermore, a discharge pipe is fixedly connected to the lower surface of the mixing vessel, and the outer wall of the rack is slidably connected to the inner wall of the fixed plate.

[0013] Furthermore, the outer wall of the rack is slidably connected to the inner wall of the flow limiting box, and the outer wall of the flow limiting plate is fixedly connected to the inner wall of the feed pipe.

[0014] Furthermore, the lower surface of the rack is slidably connected to the inner wall of the flow-limiting box, and the outer wall of the scraper is in contact with the inner wall of the inner liner.

[0015] This utility model has the following beneficial effects:

[0016] In this invention, by setting an adjustment component inside the feed pipe, the problem of the traditional pressure-sensitive adhesive mixing tank having a simple feeding structure and being unable to precisely control the injection rate is effectively solved. The adjustment component works in conjunction with a sliding plate, a flow limiting mechanism, a rack and pinion transmission structure, and a threaded drive mechanism, allowing the operator to precisely adjust the opening of the feed channel by rotating the threaded rod. This enables flexible control of the raw material injection flow rate, avoiding local concentration fluctuations, agglomeration, or uneven mixing caused by excessively fast feeding. It improves material mixing and process stability, and enhances the controllability of the reaction process.

[0017] This invention utilizes a multi-stage, multi-directional stirring structure with spiral stirring blades and bottom turbine stirring blades on the stirring shaft. Combined with the structural design of an elastic wall-mounted scraper, it achieves a triple synergistic mixing effect of axial tumbling, bottom shearing turbulence, and tank wall scraping during the stirring process. The spiral blades propel the material up and down for circulation, the turbine blades enhance shearing force and local turbulence, and the scraper automatically runs against the tank wall to continuously scrape away residual material, effectively avoiding wall adhesion and dead corners. This improves the uniformity and mixing efficiency of high-viscosity pressure-sensitive adhesive during the stirring process, shortens the mixing time, and enhances product quality and production stability, demonstrating high practical value and promising prospects for promotion. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a pressure-sensitive adhesive mixing tank proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the stirring vessel part of a pressure-sensitive adhesive mixing tank proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the spiral stirring blade part of a pressure-sensitive adhesive mixing tank proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the flow-limiting box part of a pressure-sensitive adhesive mixing tank proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the fixing plate part of a pressure-sensitive adhesive mixing tank proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the scraper section of a pressure-sensitive adhesive mixing tank proposed in this utility model.

[0024] Legend:

[0025] 1. Support frame; 2. Mixing vessel; 3. Liquid inlet pipe; 4. Feed pipe; 5. Threaded rod; 6. Motor; 7. Air inlet pipe; 8. Connecting pipe; 9. Air pump; 10. Discharge pipe; 11. Liquid outlet pipe; 12. Mixing shaft; 13. Connecting plate; 14. Spiral mixing blade; 15. Connecting rod one; 16. Turbine mixing blade; 17. Inner liner; 18. Scraper; 19. Flow limiting plate; 20. Flow limiting box; 21. Fixing plate; 22. Rack one; 23. Sliding plate one; 24. Connecting rod two; 25. Rack two; 26. Gear; 27. Connecting column; 28. Spring; 29. ​​Sliding plate two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-6 The present invention provides an embodiment of a pressure-sensitive adhesive mixing tank, including a support 1. The support 1 provides a supporting foundation for the entire mixing device, supports the mixing vessel 2 and the upper structure, ensures stable operation of the equipment, and avoids vibration and displacement. The mixing vessel 2 is fixedly connected to the upper surface of the support 1, and the feed pipe 4 is fixedly connected to the upper surface of the mixing vessel 2. The feed pipe 4 provides an injection channel for solid or paste-like raw materials, and an adjustment component is set inside to control the feeding rate and avoid uncontrolled injection. The adjustment component is set inside the feed pipe 4.

[0028] The regulating component includes a sliding plate 23, which is installed inside the feed pipe 4. By moving the sliding plate 23, the opening of the feed channel is changed, thus regulating the feed flow rate. It is the core component for flow control. The sliding plate 23 is located inside the feed pipe 4. A flow limiting box 20 is fixedly connected to the inner wall of the feed pipe 4. A flow limiting plate 19 is fixedly connected to the upper surface of the flow limiting box 20. A connecting rod 24 is fixedly connected to the inner wall of the flow limiting box 20. The connecting rod 24 is fixed inside the flow limiting box 20 and provides a sliding support path for the rack 25, stabilizing its running direction. Two racks 25 are slidably connected to the outer wall of the connecting rod 24. The racks 25 are connected to the gears... 26 meshes with and connects to sliding plate 23, enabling the sliding plate to move up and down and adjust the opening of the feed inlet. The outer walls of the two racks 25 are fixedly connected to the inner walls of sliding plate 23. The inner wall of the flow limiting box 20 is rotatably connected to two gears 26, which mesh with the two racks 25 respectively. The outer wall of the feed pipe 4 is fixedly connected to a fixing plate 21, which is used to install the threaded rod 5 and limit and support it, making its rotation control more stable and reliable. The inner wall of the fixing plate 21 is threadedly connected to the threaded rod 5, and one end of the threaded rod 5 is rotatably connected to rack 22. The outer wall of rack 22 meshes with the two gears 26 respectively.

[0029] Reference Figures 1-6A motor 6 is fixedly connected to the upper surface of the mixing vessel 2. The motor 6 serves as a power source, driving the stirring shaft 12 to rotate and enabling the normal operation of the stirring mechanism. The output end of the motor 6 is fixedly connected to the stirring shaft 12. A connecting plate 13 is fixedly connected to the outer wall of the stirring shaft 12. A connecting rod 15 is fixedly connected to the outer wall of the connecting plate 13. A spiral stirring blade 14 and a turbine stirring blade 16 are fixedly connected to the outer wall of the stirring shaft 12. The turbine stirring blade 16 is located at the bottom of the vessel, generating strong shear and radial turbulence, enhancing local mixing, breaking down the agglomeration structure of materials, and improving mixing efficiency. A connecting column 27 is fixedly connected to the outer wall of the connecting rod 15. A spring 28 is fixedly connected to the inner wall of the connecting column 27. The spring 28 provides elastic restoring force, causing the sliding plate 29 to drive the scraper 18 to automatically adhere to the inner wall of the inner liner 17, realizing the automatic wall-adhering scraping function. One end of the spring 28 is fixedly connected to the sliding plate 29. A scraper 18 is fixedly connected to the outer wall of the sliding plate 29. An air inlet pipe 7 is fixedly connected to the outer wall of the mixing vessel 2. The air inlet pipe 7 is used to input air into the mixing vessel 2. Gas is used to assist in degassing, reaction, or maintaining the pressure environment inside the tank. One end of the air inlet pipe 7 is fixedly connected to a connecting pipe 8, and the other end of the connecting pipe 8 is fixedly connected to an air pump 9. The interior of the stirring vessel 2 is equipped with an inner liner 17, which is in close contact with the scraper 18, providing space for material mixing and protecting the outer shell. An inlet pipe 3 is fixedly connected to the outer wall of the stirring vessel 2, and an outlet pipe 11 is fixedly connected to the outer wall of the stirring vessel 2. A discharge pipe 10 is fixedly connected to the lower surface of the stirring vessel 2. After mixing, the pressure-sensitive adhesive or... The channel for discharging the mixture from the tank facilitates subsequent processing or packaging. The outer wall of rack 22 is slidably connected to the inner wall of fixed plate 21, and the outer wall of rack 22 is slidably connected to the inner wall of flow limiting box 20. The outer wall of flow limiting plate 19 is fixedly connected to the inner wall of feed pipe 4, and the lower surface of rack 25 is slidably connected to the inner wall of flow limiting box 20. The outer wall of scraper 18 is in contact with the inner wall of inner liner 17. Scraper 18 moves in contact with the wall of inner liner 17 to remove material and residue from the tank wall, prevent dead corners and caking, and improve material utilization and cleaning convenience.

[0030] Working principle: When a pressure-sensitive adhesive mixing tank is needed, the material is first fed into the mixing vessel 2 through the feed pipe 4. Then, heat transfer oil or hot water can be directly added to the mixing vessel 2 and the inner liner 17 through the liquid inlet pipe 3 to achieve temperature control. Heating promotes the dissolution and reaction of the colloidal components, while cooling is used to adjust the reaction rate and control the viscosity to ensure stable colloidal performance. When flow rate adjustment is required, an adjustment component is set inside the feed pipe 4 to effectively control the flow rate during material injection, solving the problem of simple feed inlet structure and difficult control of injection speed in traditional mixing tanks. The adjustment component includes a sliding plate 23, which is set inside the feed pipe 4. The opening of the feed channel is controlled by sliding, thereby adjusting the feed speed. A flow limiting box 20 is fixedly connected to the inner wall of the feed pipe 4. A flow limiting plate 19 is fixedly connected to the upper surface of the flow limiting box 20 as a limiting structure. A connecting rod 24 is set inside the flow limiting box 20, and two racks 25 are slidably connected to its outer wall. Rack 25 is connected to sliding plate 23 and is used to drive it to slide up and down. Gears 26 are respectively set on both sides of the inner wall of the flow limiting box 20 and mesh with the two racks 25 for transmission and adjustment. The adjustment is driven by threaded rod 5, which is threaded to the inner wall of fixed plate 21. One end of the threaded rod is connected to rack 22. When the operator rotates the threaded rod 5, rack 22 drives gear 26 to rotate, thereby driving rack 25 to drive sliding plate 23 to move horizontally, thereby adjusting the opening degree of the feed channel and realizing precise control of the feed amount. This structure effectively improves the problems of uneven material injection rate, local concentration fluctuation, easy to cause uneven stirring and difficult reaction control, and improves the stability of the feeding process and the controllability of the reaction.

[0031] Furthermore, to achieve efficient mixing of high-viscosity materials such as pressure-sensitive adhesives, this mixing tank is equipped with a multi-stage, multi-directional mixing structure. A motor 6 is mounted on the upper surface of the mixing vessel 2. The motor 6 drives the internal mixing mechanism via a mixing shaft 12. A spiral mixing blade 14 and a turbine mixing blade 16 are sequentially fixed on the mixing shaft 12. A flexible component connecting rod 15 is connected via a connecting plate 13. A connecting column 27 is provided on the outer wall of the flexible component connecting rod 15, and a spring 28 is installed on the inner wall of the connecting column 27. The spring 28 is connected to a sliding plate 29, and a wall-mounted scraper 18 is provided on the outer wall of the sliding plate 29. During the mixing process, the spiral mixing blade 14 drives the material to circulate axially, improving the mixing efficiency. Overall stirring effect; the bottom turbine stirring blades 16 generate strong shear force and radial disturbance, enhancing local mixing efficiency, especially suitable for bottom stirring of high viscosity pressure-sensitive adhesives; the elastic scraper 18 moves against the inner wall of the inner liner 17 under the drive of the stirring shaft 12, continuously scraping off residual materials on the tank wall, preventing the occurrence of wall hanging, dead corners and caking. The three work together, with the cooperation of spiral flow, shear flow and wall cleaning action, which can effectively improve the overall mixing uniformity of high viscosity materials, shorten mixing time and improve product quality. Finally, the air pump 9 is connected to the air inlet pipe 7 on the tank cover to evacuate the tank, eliminate the air bubbles generated during the stirring process, and improve the density and stability of the pressure-sensitive adhesive.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure-sensitive adhesive mixing tank, comprising a support (1), characterized in that: The upper surface of the support (1) is fixedly connected to the stirring vessel (2), the upper surface of the stirring vessel (2) is fixedly connected to the feed pipe (4), and the feed pipe (4) is provided with an adjustment component inside; The adjustment assembly includes a sliding plate (23), which is disposed inside the feed pipe (4). A flow limiting box (20) is fixedly connected to the inner wall of the feed pipe (4). A flow limiting plate (19) is fixedly connected to the upper surface of the flow limiting box (20). A connecting rod (24) is fixedly connected to the inner wall of the flow limiting box (20). Two racks (25) are slidably connected to the outer wall of the connecting rod (24). The outer walls of the two racks (25) are fixedly connected to the inner wall of the sliding plate (23). Two gears (26) are rotatably connected to the inner wall of the flow limiting box (20). The two gears (26) mesh with the two racks (25) respectively. A fixing plate (21) is fixedly connected to the outer wall of the feed pipe (4). A threaded rod (5) is threadedly connected to the inner wall of the fixing plate (21). A rack (22) is rotatably connected to one end of the threaded rod (5). The outer walls of the rack (22) mesh with the two gears (26) respectively.

2. The pressure-sensitive adhesive mixing tank according to claim 1, characterized in that: A motor (6) is fixedly connected to the upper surface of the stirring vessel (2). A stirring shaft (12) is fixedly connected to the output end of the motor (6). A connecting plate (13) is fixedly connected to the outer wall of the stirring shaft (12). A connecting rod (15) is fixedly connected to the outer wall of the connecting plate (13). A spiral stirring blade (14) and a turbine stirring blade (16) are fixedly connected to the outer wall of the stirring shaft (12). A connecting column (27) is fixedly connected to the outer wall of the connecting rod (15). A spring (28) is fixedly connected to the inner wall of the connecting column (27). A sliding plate (29) is fixedly connected to one end of the spring (28). A scraper (18) is fixedly connected to the outer wall of the sliding plate (29).

3. The pressure-sensitive adhesive mixing tank according to claim 1, characterized in that: An air inlet pipe (7) is fixedly connected to the outer wall of the stirring vessel (2), and a connecting pipe (8) is fixedly connected to one end of the air inlet pipe (7).

4. The pressure-sensitive adhesive mixing tank according to claim 3, characterized in that: One end of the connecting pipe (8) is fixedly connected to an air pump (9), and the inside of the stirring vessel (2) is provided with an inner liner (17).

5. A pressure-sensitive adhesive mixing tank according to claim 2, characterized in that: The outer wall of the stirred tank (2) is fixedly connected to the liquid inlet pipe (3) and the outer wall of the stirred tank (2) is fixedly connected to the liquid outlet pipe (11).

6. A pressure-sensitive adhesive mixing tank according to claim 2, characterized in that: The lower surface of the mixing vessel (2) is fixedly connected to the discharge pipe (10), and the outer wall of the rack (22) is slidably connected to the inner wall of the fixed plate (21).

7. A pressure-sensitive adhesive mixing tank according to claim 2, characterized in that: The outer wall of the rack (22) is slidably connected to the inner wall of the flow limiting box (20), and the outer wall of the flow limiting plate (19) is fixedly connected to the inner wall of the feed pipe (4).

8. A pressure-sensitive adhesive mixing tank according to claim 2, characterized in that: The lower surface of the rack (25) is slidably connected to the inner wall of the flow limiting box (20), and the outer wall of the scraper (18) is in contact with the inner wall of the inner liner (17).

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