A matting agent adding device

Abstract

The utility model relates to a kind of matt additive adding device, it is related to matt production technical field, technical solutions are as follows: including feeding tank, deionized water conveying pipe and matt feeding pipe are connected on feeding tank, stirring assembly is provided in feeding tank, deionized water flowmeter is installed on deionized water conveying pipe, the bottom of feeding tank is provided with discharge pipe, discharge pipe is provided with feeding flowmeter.This technical solutions beneficial effect is: after matt is prepared into aqueous solution, matt particle is fully dispersed in water medium, fluidity is greatly promoted, can smoothly pass through pipeline and feeding port into reaction kettle, effectively avoid dry powder agglomeration or matt blockage phenomenon, make feeding process more stable, continuous, feeding pump does not appear overload operation situation again, reduce the number of downtime due to feeding fault, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of matting agent production technology, and in particular to a matting agent addition device. Background Technology

[0002] Polyvinyl chloride (PVC) matte resin has a wide range of applications due to its unique surface matting properties, such as high-grade artificial leather, automotive interiors, and packaging materials. However, the addition of matting agents in the traditional production process of PVC matte resin has always presented numerous challenges.

[0003] Existing methods for adding matting agents typically involve either direct addition of dry powder or dissolution in an organic solvent. Direct addition of dry powder can lead to agglomeration of the matting agent, resulting in uneven dispersion in the resin system and affecting the stability of the matting effect. Furthermore, the poor flowability of dry powder makes addition difficult, clogging the feed inlet and delivery pipes. To maintain continuous production, frequent shutdowns for equipment cleaning are often necessary, significantly reducing production efficiency and increasing equipment maintenance costs. While dissolving the matting agent in an organic solvent improves its dispersibility to some extent, organic solvents have stringent storage conditions; both high and low temperatures can have adverse effects. They are prone to clogging or crystallization in the feed pump or pipelines, requiring frequent flushing. Precise control of the amount of matting agent added is difficult, and fluctuations in the amount added can lead to inconsistent matting performance and reduced product quality. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of current matting agents, such as poor fluidity, which can clog pipes and make it difficult to control the amount delivered, thus reducing product quality. Therefore, this invention proposes a matting agent addition device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A matting agent adding device includes a feeding tank, a deionized water conveying pipe and a matting agent feeding pipe connected to the feeding tank, a stirring assembly installed inside the feeding tank, a deionized water flow meter installed on the deionized water conveying pipe, a discharge pipe installed at the bottom of the feeding tank, and a feeding flow meter installed on the discharge pipe.

[0006] The matting agent is mixed with deionized water, and the flow rate of the matting agent aqueous solution is monitored in real time by setting a feed flow meter to ensure that the actual amount of matting agent aqueous solution added is always accurate and stable within the set range, thereby ensuring product quality.

[0007] Preferably, the stirring assembly includes a motor mounted on the feeding tank, a driving bevel gear mounted on the output shaft of the motor, a stirring shaft mounted on the feeding tank, a driven bevel gear mounted on the stirring shaft, the teeth of the driving bevel gear and the driven bevel gear meshing, the lower end of the stirring shaft extending into the feeding tank, and multiple stirring blades evenly spaced on the stirring shaft.

[0008] The stirring shaft drives the stirring blades to rotate, and the rotation of the stirring blades generates shear force, which disperses the matting agent, and then the matting agent is evenly dissolved in the deionized water.

[0009] Preferably, the stirring shaft is hollow, and the upper end of the stirring shaft is connected to an air supply pipe through a rotary joint. Multiple air outlet pipes are evenly spaced on the stirring shaft, and multiple air outlet holes are provided on the air outlet pipes. The air supply pipes and stirring blades are arranged alternately.

[0010] When the agitator blades are agitating, compressed air is delivered through the air outlet. The compressed air will further disperse the matting agent that has been broken up by the agitator blades, thus ensuring that the matting agent is fully mixed in the deionized water, which facilitates subsequent operations.

[0011] Preferably, a filter, a matting agent feed pump, a pressure sensor, and a flow regulating valve are connected sequentially to the discharge pipe.

[0012] The feed flow meter monitors the flow rate of the matting agent aqueous solution in real time and feeds the signal back to the control system. The control system compares the preset flow rate value with the feedback value and automatically adjusts the opening of the flow regulating valve to ensure that the actual amount of matting agent aqueous solution added is always accurate and stable within the set range.

[0013] Preferably, a return pipe is connected to the discharge pipe, one end of which is connected to the feeding tank. A pressure regulating valve is installed on the return pipe, and a pressure sensor is electrically connected to the pressure regulating valve.

[0014] The feeding pressure of the matting agent aqueous solution is monitored in real time by a pressure sensor on the discharge pipe, and then the feeding pressure is controlled by a pressure regulating valve.

[0015] Preferably, a deionized water feeding valve is installed on the deionized water delivery pipe.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: After the matting agent is prepared into an aqueous solution, the matting agent particles are fully dispersed in the aqueous medium, significantly improving fluidity and allowing it to smoothly enter the reactor through pipes and feeding ports. This effectively avoids dry powder agglomeration or matting agent blockage, making the feeding process more stable and continuous. The feeding pump no longer experiences overload operation, reducing downtime due to feeding failures and improving production efficiency. It also reduces the number of times operators need to prepare materials, alleviating labor intensity. Furthermore, with the help of a metering pump and a real-time flow monitoring and feedback control system, the amount of matting agent aqueous solution added can be precisely controlled, minimizing errors and ensuring highly consistent matting performance of each batch of PVC matting resin products, thus guaranteeing product quality. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the structure inside the feeding tank in a specific embodiment of this utility model.

[0020] In the diagram: 1. Deionized water flow meter; 2. Deionized water feed valve; 3. Motor; 4. Feed pipe; 5. Feed tank; 6. Filter; 7. Matting agent feed pump; 8. Pressure regulating valve; 9. Pressure sensor; 10. Feed flow meter; 11. Flow regulating valve; 12. Agitator blade; 13. Air outlet pipe; 14. Air outlet; 15. Driving bevel gear; 16. Agitator shaft; 17. Deionized water delivery pipe; 18. Driven bevel gear; 19. Discharge pipe; 20. Air delivery pipe; 21. Return pipe. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] Reference Figures 1-2A matting agent adding device includes a feeding tank 5, with a deionized water conveying pipe 17 and a matting agent feeding pipe 4 connected to the feeding tank 5. The mass ratio of matting agent to deionized water is 1:2. The matting agent is added to the feeding tank 5 as needed, and then a stirring assembly is used to mix the matting agent and deionized water evenly. The feeding tank 5 is equipped with a stirring assembly. A deionized water flow meter 1 and a deionized water feeding valve 2 are installed on the deionized water conveying pipe 17. The deionized water flow meter 1 can monitor the amount of deionized water conveyed to ensure that the matting agent is fully mixed. The deionized water is added to the deionized water, and the deionized water feeding valve 2 controls the delivery of the deionized water. The bottom of the feeding tank 5 is equipped with a discharge pipe 19, and a feeding flow meter 10 is installed on the discharge pipe 19. The uniformly mixed matting agent solution is delivered to the polymerization reactor through the discharge pipe 19. The feeding flow meter 10 monitors the flow rate of the matting agent aqueous solution in real time and feeds the signal back to the control system. The control system compares the preset flow rate value with the feedback value and automatically adjusts the opening of the flow regulating valve 11 to ensure that the actual amount of matting agent aqueous solution added is always accurate and stable within the set range.

[0023] Reference Figure 2 The mixing assembly includes a motor 3 mounted on a feeding tank 5. A driving bevel gear 15 is mounted on the output shaft of the motor 3. A mixing shaft 16 is mounted on the feeding tank 5, and a driven bevel gear 18 is mounted on the mixing shaft 16. The teeth of the driving bevel gear 15 and the driven bevel gear 18 mesh. A placement box is provided on the feeding tank 5. The motor 3, driving bevel gear 15, and driven bevel gear 18 are located inside the placement box. The upper end of the mixing shaft 16 passes through the side wall of the placement box and extends to the top of the placement box. When the matting agent and deionized water are respectively delivered to the feeding tank 5, the motor 3 controls the driving bevel gear 15 to rotate. The driving bevel gear 15 drives the driven bevel gear 18 to rotate, thereby driving the mixing shaft 16 to rotate. The mixing shaft 16 drives the mixing blades 12 to rotate. When the mixing blades 12 rotate, they produce… The shear force of the agglomerated particles breaks them up, allowing the matting agent particles to be fully dispersed in the deionized water. The lower end of the stirring shaft 16 extends into the feeding tank 5. Multiple stirring blades 12 are evenly spaced on the stirring shaft 16. The stirring shaft 16 is hollow. The upper end of the stirring shaft 16 is connected to the air supply pipe 20 through a rotary joint. Multiple air outlet pipes 13 are evenly spaced on the stirring shaft 16. Multiple air outlet holes 14 are provided on the air outlet pipes 13. The air supply pipes 20 and stirring blades 12 are arranged alternately. The air outlet pipes 13 are connected to the stirring shaft 16. The stirring shaft 16 delivers compressed air to each air outlet pipe 13, which is then discharged through the air outlet holes 14 on the air outlet pipe 13. When the stirring blades 12 rotate, the air outlet pipes 13 deliver compressed air, which "disperses" the matting agent particles, making the matting agent mixture more uniform.

[0024] Reference Figure 1A filter 6, a matting agent feed pump 7, a pressure sensor 9, and a flow regulating valve 11 are connected sequentially to the discharge pipe 19. The filter 6 filters the mixed matting agent. The flow regulating valve 11 is electrically connected to the feed flow meter 10. The opening of the flow regulating valve 11 is automatically adjusted according to the flow rate monitored by the feed flow meter 10. A return pipe 21 is connected to the discharge pipe 19. One end of the return pipe 21 is connected to the feed tank 5. A pressure regulating valve 8 is installed on the return pipe 21. The pressure sensor 9 is electrically connected to the pressure regulating valve 8. When the pressure sensor 9 detects that the pressure on the discharge pipe 19 is too high, the pressure regulating valve 8 opens, and the excess solution is transported to the feed tank 5 to control the pressure in the discharge pipe 19.

[0025] In use, the matting agent to be used is first delivered to the feeding tank 5 through the feeding pipe 4, and the deionized water is delivered to the feeding tank 5 through the deionized water delivery pipe 17. The flow rate of the deionized water is controlled by the deionized water flow meter 1 to ensure that the mass ratio of matting agent to deionized water is 1:2. At the same time, the motor 3 is turned on, and the stirring blade 12 and the air outlet pipe 13 are driven to rotate together through the active bevel gear 15 and the driven bevel gear 18. At the same time, the compressed air control valve on the air delivery pipe 20 is opened to mix for about 10 minutes to ensure that the matting agent is fully dissolved and evenly dispersed in the aqueous solution to form a stable and clear matting agent aqueous solution. During the time it takes to add the matting agent formulation to the PVC polymerization reactor, start the matting agent feed pump 7 and slowly add the matting agent aqueous solution to the polymerization reactor through the discharge pipe 19 at a predetermined flow rate. During the addition process, the pressure sensor 9 monitors the pressure of the matting agent aqueous solution in real time, and the pressure on the discharge pipe 19 is monitored. When the pressure is too high, the pressure regulating valve 8 opens, and part of the matting agent solution is delivered to the feed tank 5. At the same time, the flow meter 10 installed on the discharge pipe 19 monitors the flow rate of the matting agent aqueous solution in real time and feeds the signal back to the control system. The control system compares the preset flow rate value with the feedback value and automatically adjusts the opening of the flow regulating valve 11 to ensure that the actual amount of matting agent aqueous solution added is always accurate and stable within the set range. Continue to add the matting agent aqueous solution until the predetermined amount is reached, then close the matting agent feed valve of the polymerization reactor and shut down the matting agent feed pump 7.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A matting agent adding device, characterized in that: It includes a feeding tank (5), which is connected to a deionized water conveying pipe (17) and a matting agent feeding pipe (4). A stirring assembly is installed inside the feeding tank (5). A deionized water flow meter (1) is installed on the deionized water conveying pipe (17). A discharge pipe (19) is installed at the bottom of the feeding tank (5). A feeding flow meter (10) is installed on the discharge pipe (19).

2. The matting agent adding device according to claim 1, characterized in that: The stirring assembly includes a motor (3) mounted on the feeding tank (5), a drive bevel gear (15) mounted on the output shaft of the motor (3), a stirring shaft (16) mounted on the feeding tank (5), a driven bevel gear (18) mounted on the stirring shaft (16), the tooth surfaces of the drive bevel gear (15) and the driven bevel gear (18) meshing, the lower end of the stirring shaft (16) extending into the feeding tank (5), and multiple stirring blades (12) evenly spaced on the stirring shaft (16).

3. The matting agent adding device according to claim 2, characterized in that: The stirring shaft (16) is hollow. The upper end of the stirring shaft (16) is connected to the gas supply pipe (20) through a rotary joint. Multiple gas outlet pipes (13) are evenly spaced on the stirring shaft (16). Multiple gas outlet holes (14) are provided on the gas outlet pipes (13). The gas supply pipes (20) and the stirring blades (12) are alternately arranged.

4. The matting agent adding device according to claim 1, characterized in that: A filter (6), a matting agent feed pump (7), a pressure sensor (9), and a flow regulating valve (11) are connected in sequence to the discharge pipe (19).

5. The matting agent adding device according to claim 4, characterized in that: A return pipe (21) is connected to the discharge pipe (19). One end of the return pipe (21) is connected to the feeding tank (5). A pressure regulating valve (8) is installed on the return pipe (21). The pressure sensor (9) is electrically connected to the pressure regulating valve (8).

6. The matting agent adding device according to claim 1, characterized in that: A deionized water feed valve (2) is installed on the deionized water delivery pipe (17).

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