A dropping reaction vessel for feeding raw materials in pressure-sensitive adhesive processing

Abstract

This utility model relates to the field of pressure-sensitive adhesive processing reactor technology, specifically a dripping reactor for feeding raw materials in pressure-sensitive adhesive processing. It includes a reactor body, on which a feeding mechanism, a discharging mechanism, and a stirring mechanism are installed. The feeding mechanism includes a feeding pipe connected to the reactor body. A connecting pipe connected to the feeding pipe is located at the top inner part of the reactor body, and a dripping pipe is connected to the bottom of the connecting pipe. A fixing ring is fixedly connected to the stirring mechanism by screws. Multiple fixing rods are fixedly connected to the side wall of the fixing ring, and sealing plates are welded to the ends of the fixing rods. The sealing plates abut against the dripping pipe and are located at the bottom of the dripping port. By installing these mechanisms on the reactor, the raw materials fed in a single batch can be dispersed and added to multiple locations within the reactor, preventing the raw materials from accumulating in one place, ensuring uniform distribution of the raw materials, improving the stirring effect, and guaranteeing complete reaction of the raw materials within a specified time.

Description

Technical Field

[0001] This utility model belongs to the field of dripping reaction vessel technology, specifically a dripping reaction vessel for feeding raw materials in pressure-sensitive adhesive processing. Background Technology

[0002] Pressure-sensitive adhesive (PSA) is a type of adhesive that bonds to substrates under light pressure and exhibits a certain peel force without leaving residue upon removal. It does not require activation with solvents, water, or other substances; it functions simply by applying pressure with fingers or simple tools. The drop-addition reactor precisely controls the dropping rate and flow rate of the raw materials to gradually add the PSA processing materials into the reaction system. During the dropping process, the raw materials react chemically with other substances within the reactor. By controlling the dropping rate, the reaction progress and product quality can be better controlled.

[0003] In the existing technology, when processing pressure-sensitive adhesives, raw materials need to be fed and reacted through a drop reaction vessel. When adding raw materials into the reaction vessel, the feeding speed is controlled by a control valve. However, the raw materials still fall at the same position when they are added into the reaction vessel, and the raw materials accumulate in one place. During subsequent stirring, agglomerates are likely to occur, which may result in uneven stirring.

[0004] Therefore, a reaction vessel that allows for the feeding of materials at dispersed locations is needed. Utility Model Content

[0005] Based on this, this solution provides a dropping reaction vessel for feeding raw materials into pressure-sensitive adhesives.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A drip-feeding reactor for feeding raw materials in pressure-sensitive adhesive processing includes a reactor body, on which a feeding mechanism, a discharging mechanism, and a stirring mechanism are installed. The feeding mechanism includes a feeding pipe, which is connected to the reactor body. A connecting pipe communicating with the feeding pipe is provided at the inner top of the reactor body. A drip-feeding pipe is connected to the bottom of the connecting pipe. A column is welded between the drip-feeding pipe and the reactor body. The bottom of the annular drip-feeding pipe has multiple drip ports. A fixing ring is fixedly connected to the stirring mechanism by screws. Multiple fixing rods are fixedly connected to the side wall of the fixing ring. A sealing plate is welded to the end of each fixing rod. The sealing plate abuts against the drip-feeding pipe and is located at the bottom of the drip ports.

[0008] Optionally, in one embodiment of the present invention, a plurality of the drip inlets are arranged in a ring array at the bottom of the drip tube, and the sealing plates at the bottom of the plurality of drip inlets have an arc-shaped structure.

[0009] Optionally, in one embodiment of the present invention, the stirring mechanism includes a fixed base, a fixed base is installed at the top center of the reactor body, a driving component is installed on the fixed base, a coupling is installed at the output end of the driving component, a stirring shaft extending into the reactor body is fixedly connected to the end of the coupling, a plurality of stirring blades are equidistantly installed on the stirring shaft, and a fixing ring is fixed to the stirring shaft by screws.

[0010] Optionally, in one embodiment of the present invention, the feeding mechanism includes a feeding pipe, and the feeding pipe is installed on the side wall of the reaction vessel body.

[0011] Optionally, in one embodiment of the present invention, the feeding mechanism further includes a ramp, and the bottom of the reaction vessel body is provided with a ramp at an incline, with the lowest point of the ramp close to the feeding pipe.

[0012] Optionally, in one embodiment of the present invention, the reactor body is provided with a heat preservation mechanism, the heat preservation mechanism includes a water inlet pipe, the side wall of the reactor body is provided with a water inlet pipe and a drain pipe, the inner wall of the reactor body is provided with a spiral heat preservation groove, and the two ends of the heat preservation groove are respectively connected to the water inlet pipe and the drain pipe.

[0013] Optionally, in one embodiment of the present invention, a spraying mechanism is installed inside the reactor body. The spraying mechanism includes mounting blocks and spray pipes. Multiple mounting blocks located above the dripping pipes are welded at equal intervals on the inner wall of the reactor body. Spray pipes with annular cross-sections are welded to the inner sides of the multiple mounting blocks. Multiple spray nozzles opposite to the inner wall of the reactor body are provided on the side wall of the spray pipes. An inlet pipe communicating with the spray pipes is installed on the reactor body.

[0014] Optionally, in one embodiment of the present invention, the spray pipe has a rectangular cross-section, and the spray nozzles are arranged in a ring array on the side wall of the spray pipe.

[0015] Optionally, in one embodiment of the present invention, the spraying mechanism further includes sliding rods. Multiple sliding rods are slidably connected in a ring array on the top of the reactor body. A ring-shaped pressure ring is welded to the top of the multiple sliding rods. A spring is wound around the side wall of the pressure ring. An L-shaped baffle is welded to the bottom of the multiple sliding rods located inside the reactor body. The side of the multiple baffles corresponds to the spray nozzle.

[0016] Optionally, in one embodiment of the present invention, the spraying mechanism further includes a sealing ring and a pressure plate. The side walls of the plurality of slide rods are provided with sealing rings that are bonded to the inner top of the reactor body. The top of the reactor body is rotatably connected to a pressure plate that abuts against the top of the pressure ring.

[0017] Compared with the prior art, the dropping reaction vessel for feeding raw materials in pressure-sensitive adhesive processing provided by this utility model has the following characteristics:

[0018] By combining the array of drip inlets at the bottom of the annular drip tube with the arc-shaped sealing plate driven by the stirring shaft, the raw materials are dispersed and fall evenly and intermittently in multiple locations within the reactor, preventing local accumulation and ensuring that newly added raw materials are immediately stirred and dispersed, thus improving mixing efficiency and reaction uniformity. At the same time, the sealing mechanism is driven by the stirring power, which is simple and reliable. The mechanical baffle seal of the spray nozzle can prevent the spray nozzle from clogging, the spiral heat preservation tank can achieve heat preservation, and the reactor body also has comprehensive spray cleaning capabilities.

[0019] In summary, this improved the reaction efficiency, product quality, equipment maintainability, and ease of operation in the production of pressure-sensitive adhesives. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the connection structure of the stirring shaft and the fixing ring in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure of the column, connecting pipe and dripping pipe in Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure of the drip tube, sealing plate and fixing rod in Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the connection structure of the dropper and the dropper opening in Embodiment 1 of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure of the spray pipe and baffle in Embodiment 1 of this utility model;

[0027] Figure 7 This is a schematic diagram of the connection structure of the spray pipe, spray nozzle and mounting block of this utility model.

[0028] Reference numerals in the attached drawings: 1. Reactor body; 2. Feeding mechanism; 201. Feeding pipe; 202. Inclined ramp; 3. Feeding mechanism; 301. Feeding pipe; 302. Connecting pipe; 303. Fixing ring; 304. Fixing rod; 305. Dropping pipe; 306. Column; 307. Sealing plate; 308. Dropping port; 4. Insulation mechanism; 4. Water inlet pipe; 401. Drainage pipe; 402. Insulation tank; 403. Stirring mechanism; 5. Fixing base; 501. Drive assembly; 502. Coupling; 503. Stirring shaft; 504. Stirring blade; 505. Spraying mechanism; 6. Pressure ring; 601. Pressure plate; 602. Liquid inlet pipe; 603. Spraying pipe; 604. Sliding rod; 605. Baffle; 606. Mounting block; 607. Spring; 608. Spraying port; 609. Sealing ring; 610. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0030] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar regional components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0031] Example 1

[0032] To avoid uneven mixing later, a dropwise addition reactor with dispersed feeding was designed, as follows:

[0033] like Figure 1-7As shown, a dripping reaction vessel for feeding raw materials in pressure-sensitive adhesive processing includes a reaction vessel body 1. The reaction vessel body 1 is equipped with a feeding mechanism 3, a discharging mechanism 2, and a stirring mechanism 5. The feeding mechanism 3 includes a feeding pipe 301, which is connected to the reaction vessel body 1. A connecting pipe 302 connected to the feeding pipe 301 is provided at the top inner part of the reaction vessel body 1. A dripping pipe 305 is connected to the bottom of the connecting pipe 302. A column 306 is welded between the dripping pipe 305 and the reaction vessel body 1. The bottom of the annular dripping pipe 305 has multiple dripping ports 308. A fixing ring 303 is fixedly connected to the stirring mechanism 5 by screws. Multiple fixing rods 304 are fixedly connected to the side wall of the fixing ring 303. A sealing plate 307 is welded to the end of each of the multiple fixing rods 304. The sealing plate 307 abuts against the dripping pipe 305 and is located at the bottom of the dripping port 308.

[0034] Multiple drip ports 308 are arranged in a ring array at the bottom of the drip tube 305, and the sealing plates 307 at the bottom of the multiple drip ports 308 have an arc-shaped structure, which realizes multiple feeding points inside the reactor body 1, and the sealing plates 307 seal the drip ports 308.

[0035] The stirring mechanism 5 includes a fixed base 501. The fixed base 501 is installed at the top center of the reactor body 1. A drive assembly 502 is installed on the fixed base 501. A coupling 503 is installed at the output end of the drive assembly 502. A stirring shaft 504 extending into the reactor body 1 is fixedly connected to the end of the coupling 503. Multiple sets of stirring blades 505 are equidistantly installed on the stirring shaft 504. A fixing ring 303 is fixed to the stirring shaft 504 with screws. By connecting the drive assembly 502 to the power supply, the stirring shaft 504 drives the stirring blades 505 to stir the raw materials inside the reactor body 1.

[0036] The feeding mechanism 2 includes a feeding pipe 201, which is installed on the side wall of the reactor body 1. The feeding mechanism 2 also includes a ramp 202, which is inclined at the bottom of the reactor body 1. The lowest point of the ramp 202 is close to the feeding pipe 201. After the pressure-sensitive adhesive raw material reaction is completed, the valve on the feeding pipe 201 is opened to allow the raw material to be discharged from the ramp 202 to the end of the feeding pipe 201.

[0037] The reactor body 1 is equipped with a heat preservation mechanism 4, which includes a water inlet pipe 401. The side wall of the reactor body 1 is equipped with a water inlet pipe 401 and a drain pipe 402. The inner wall of the reactor body 1 is spirally opened with a heat preservation groove 403. The two ends of the heat preservation groove 403 are connected to the water inlet pipe 401 and the drain pipe 402 respectively. When the pressure-sensitive adhesive raw materials react, hot water can enter from the water inlet pipe 401. The hot water passes through the inside of the heat preservation groove 403 to keep the raw materials warm, which is conducive to the reaction of the raw materials. Then it is discharged from the drain pipe 402 for recycling.

[0038] The reactor body 1 is equipped with a spraying mechanism 6. The spraying mechanism 6 includes mounting blocks 607 and spray pipes 604. Multiple mounting blocks 607 are welded at equal intervals above the dripping pipes 305 on the inner wall of the reactor body 1. Spray pipes 604 with an annular cross-section are welded to the inner side of the multiple mounting blocks 607. Multiple spray nozzles 609 are provided on the side wall of the spray pipes 604, which are opposite to the inner wall of the reactor body 1. A liquid inlet pipe 603 connected to the spray pipes 604 is installed on the reactor body 1. The spray nozzles 609 are arranged in an annular array on the side wall of the spray pipes 604. After the reaction is completed, the liquid inlet pipe 603 is connected to warm water, so that warm water can be sprayed out from the spray nozzles 609 on the side wall of the spray pipes 604. The sprayed water flows to the side wall of the reactor body 1, thereby cleaning the inner wall of the reactor body 1.

[0039] The spraying mechanism 6 also includes slide rods 605. Multiple slide rods 605 are slidably connected in a ring array on the top of the reactor body 1. A ring-shaped pressure ring 601 is welded to the top of the multiple slide rods 605. A spring 608 is wound around the side wall of the pressure ring 601. The bottom of the multiple slide rods 605 located inside the reactor body 1 is welded with an L-shaped baffle 606. The sides of the multiple baffles 606 correspond to the spray nozzles 609. When stirring the raw materials, the pressure ring 601 can be pressed by the pressure plate 602. At this time, the baffle 606 seals the spray nozzles 609 to prevent the pressure-sensitive adhesive material from clogging the spray nozzles 609. The spraying mechanism 6 also includes a sealing ring 610 and a pressure plate 602. The side walls of the multiple slide rods 605 are provided with sealing rings 610 that are bonded to the inner top of the reactor body 1. The top of the reactor body 1 is rotatably connected to the pressure plate 602 that abuts against the top of the pressure ring 601. The sealing ring 610 increases the sealing performance of the reactor body 1.

[0040] Instructions for use:

[0041] The raw material inlet pipe is connected to the feed pipe 301 via a flange. A baffle 606 abuts against the spray nozzle 609 to seal the nozzle, preventing raw material from entering and causing blockage. When the pressure-sensitive adhesive raw material reacts, the valve on the inlet pipe is opened, allowing the raw material to enter the connecting pipe 302 from the feed pipe 301 and eventually accumulate in the dripping pipe 305. At this point, the drive assembly 502 is activated. The drive assembly 502 can be a motor. After activation, the drive assembly 502 drives the stirring shaft 504 to rotate, stirring the pressure-sensitive adhesive raw material. After the stirring shaft 504 rotates... This will cause multiple fixed rods 304 to rotate, and multiple sealing plates 307 to rotate in a circle at the bottom of the dripping tube 305, thereby intermittently opening multiple dripping ports 308. Because the raw material inside the dripping tube 305 is continuously supplied, when the sealing plate 307 separates from the dripping port 308, the raw material falls from the multiple dripping ports 308 into the interior of the reactor body 1, completing the intermittent feeding and avoiding raw material accumulation. During feeding, the stirring blade 505 stirs together, which is conducive to the dispersion and stirring of the raw material, ensuring that the raw material completes the reaction within the specified time. After the feeding is completed, the feed valve can be closed.

[0042] During the reaction, hot water can be introduced into the inlet pipe 401. The hot water enters the heat preservation tank 403 to keep the raw materials inside the reactor body 1 warm. After the hot water cools down, it is discharged from the drain pipe 402 and can be recycled after being heated.

[0043] After the reaction is complete, open the valve at the discharge pipe 201 to allow the pressure-sensitive adhesive raw material to be discharged from the ramp 202 to the discharge pipe 201 for packaging.

[0044] When the feed pipe 201 is opened, the two pressure plates 602 are rotated relative to each other, releasing the pressure on the pressure ring 601. The bottom spring 608 is reset, and at this time, multiple sliding rods 605 rise. The multiple baffles 606 at the bottom no longer seal the spray port 609. The liquid inlet pipe 603 is connected to an external water source, which can be warm water. The liquid enters the interior of the spray pipe 604 from the liquid inlet pipe 603 and is finally sprayed from the spray port 609 onto the inner wall of the reactor body 1, thus cleaning the inner wall of the reactor. After cleaning, the pressure plate 602 is rotated above the pressure ring 601 to ensure that the baffle 606 seals the spray port 609 and prevents blockage during the next reaction.

[0045] In this design, the dropper has multiple drop ports 308 arranged in a ring array at the bottom of the annular dropper tube 305. Combined with the arc-shaped sealing plate 307 driven by the stirring mechanism 5, the raw materials are simultaneously added from multiple positions at the top of the reactor body 1. This avoids the problems of local accumulation of raw materials, uneven mixing, and low reaction efficiency that are easily caused by feeding, and improves the mixing efficiency and reaction uniformity.

[0046] The moment the raw material drips, the stirring blade 505 is in a stirring state, and the raw material can be quickly dispersed and mixed with the material in the vessel, improving mixing, without the need for additional control of the feed valve and stirring timing.

[0047] The spray nozzle 609 is sealed with a baffle 606. During the reaction and feeding process, the spray nozzle 609 is physically isolated, and high-viscosity raw materials or intermediates cannot come into contact with the spray nozzle at all, thus avoiding the risk of the spray nozzle being blocked by materials.

[0048] The spiral-shaped heat exchange tank increases the heat exchange area and the residence time of hot water in the reactor wall, improving heat exchange efficiency and ensuring uniform and stable temperature of the material inside the reactor. This is beneficial for the polymerization or modification reaction of pressure-sensitive adhesives, and the material can be recycled and reused, saving resources.

[0049] Example 2

[0050] In this embodiment, the structure of the dropwise addition reactor is basically the same as that in Embodiment 1, except that the baffle 606 is connected to the liftable stirring shaft 504 via a linkage mechanism. When the stirring shaft 504 is raised, it drives the baffle 606 to move upward and open the spray nozzle 609; when it is lowered, it closes the nozzle, thus achieving precise synchronization between the opening and closing of the spray nozzle and the cleaning process.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A dropwise reaction kettle for feeding raw materials for pressure-sensitive adhesive processing, comprising a reaction kettle body, characterized in that: The reactor body is equipped with a feeding mechanism, a discharging mechanism, and a stirring mechanism. The feeding mechanism includes a feeding pipe, which is connected to the reactor body. The inner top of the reactor body is provided with a connecting pipe that communicates with the feeding pipe. The bottom of the connecting pipe is connected to a dripping pipe. A column is welded between the dripping pipe and the reactor body. The bottom of the annular dripping pipe has multiple dripping ports. A fixing ring is fixedly connected to the stirring mechanism by screws. Multiple fixing rods are fixedly connected to the side wall of the fixing ring. The ends of the multiple fixing rods are welded with sealing plates. The sealing plates abut against the dripping pipe and are located at the bottom of the dripping ports.

2. The dropwise reaction kettle for feeding raw materials for processing pressure sensitive adhesive according to claim 1, characterized in that: Multiple drip inlets are arranged in a ring array at the bottom of the drip tube, and the sealing plates at the bottom of the multiple drip inlets have an arc-shaped structure.

3. The dropwise reaction kettle for feeding raw materials for processing pressure sensitive adhesive according to claim 1, characterized in that: The stirring mechanism includes a fixed base, which is installed at the top center of the reactor body. A drive assembly is installed on the fixed base, and a coupling is installed at the output end of the drive assembly. A stirring shaft extending into the reactor body is fixedly connected to the end of the coupling. Multiple sets of stirring blades are installed equidistantly on the stirring shaft, and the fixing ring is fixed to the stirring shaft with screws.

4. The dropwise reaction kettle for feeding raw materials for processing pressure sensitive adhesive according to claim 1, characterized in that: The feeding mechanism includes a feeding pipe, which is installed on the side wall of the reactor body.

5. The dropwise reaction vessel for feeding a raw material for pressure-sensitive adhesive processing according to claim 4, characterized by: The feeding mechanism also includes a ramp, and the bottom of the reactor body is inclined with a ramp, the lowest point of which is close to the feeding pipe.

6. The dropwise reaction vessel for feeding raw materials for processing pressure sensitive adhesive according to claim 1, characterized in that: The reactor body is equipped with a heat preservation mechanism, which includes a water inlet pipe. The side wall of the reactor body is equipped with a water inlet pipe and a drain pipe. The inner wall of the reactor body is spirally opened with a heat preservation groove, and the two ends of the heat preservation groove are respectively connected to the water inlet pipe and the drain pipe.

7. The dropwise reaction vessel for feeding raw materials for processing pressure sensitive adhesive according to claim 1, characterized in that: The reactor body is equipped with a spraying mechanism, which includes mounting blocks and spray pipes. Multiple mounting blocks are welded at equal intervals to the inner wall of the reactor body above the dripping pipe. Spray pipes with annular cross-sections are welded to the inner sides of the mounting blocks. Multiple spray nozzles are provided on the side walls of the spray pipes, which are opposite to the inner wall of the reactor body. A liquid inlet pipe connected to the spray pipes is installed on the reactor body.

8. The dropwise reaction vessel for feeding a raw material for pressure-sensitive adhesive processing according to claim 7, characterized by: The spray pipe has a rectangular cross-section, and the spray nozzles are arranged in a ring array on the side wall of the spray pipe.

9. The dropwise reaction vessel for feeding a raw material for pressure-sensitive adhesive processing according to claim 8, characterized by: The spraying mechanism also includes sliding rods. Multiple sliding rods are slidably connected in a ring array on the top of the reactor body. A ring-shaped pressure ring is welded to the top of the multiple sliding rods. A spring is wound around the side wall of the pressure ring. An L-shaped baffle is welded to the bottom of the multiple sliding rods located inside the reactor body. The sides of the multiple baffles correspond to the spray nozzles.

10. The dropwise reaction vessel for feeding a raw material for pressure-sensitive adhesive processing according to claim 9, characterized by: The spraying mechanism also includes a sealing ring and a pressure plate. The side walls of the multiple slide rods are provided with sealing rings that are bonded to the inner top of the reactor body. The top of the reactor body is rotatably connected to a pressure plate that abuts against the top of the pressure ring.

Images