Device for improving styrene-butadiene latex conversion rate

Abstract

The utility model discloses a device for improving the conversion rate of styrene-butadiene latex, which comprises a reaction kettle and a stirring system, the stirring system is arranged at the upper end of the reaction kettle, a stirring paddle is arranged in the reaction kettle, the stirring paddle is connected with the stirring system, a plurality of springs are arranged on the outer wall of the stirring paddle, and a fixing block is arranged on the outer wall of the stirring paddle. A connecting rod is inserted into the fixing block, a fixing rod is arranged at the left end of the connecting rod, a spring is welded and fixed to the outer wall of the fixing rod, the spring on the outer wall of the fixing rod rotates to stir styrene-butadiene latex in the rotating process of the stirring paddle, and the spring on the outer wall of the fixing rod rotates in the rotating process of the stirring paddle; when the springs rotate along with the stirring paddle, the stirring area of the styrene-butadiene latex can be increased by the springs, and the styrene-butadiene latex is scattered again through gaps among the springs, so that the styrene-butadiene latex and an initiator are better mixed in the gaps, and the efficiency of scattering the styrene-butadiene latex by the springs is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to styrene-butadiene latex conversion devices, and particularly relates to a device for improving the conversion rate of styrene-butadiene latex. Background Art

[0002] Styrene butadiene latex (SBR) is an important emulsion polymerization product, widely used in coatings, adhesives, fibers and other industrial products. Improving the conversion rate of SBR latex is a key link in improving production efficiency and reducing costs. However, during the mixing process of SBR latex, the conversion is achieved by rotating the SBR latex through the stirring paddle. When the stirring paddle drives the SBR latex to rotate and reaches a certain speed, the SBR latex will follow the stirring paddle due to inertia, thereby reducing the mixing efficiency of the SBR latex. Utility Model Content

[0003] The purpose of the utility model is to provide a device for improving the conversion rate of styrene butadiene latex, so as to solve the problem proposed in the above background technology that in the process of stirring and mixing styrene butadiene latex, the styrene butadiene latex is converted by rotating the stirring paddle and stirring the styrene butadiene latex. When the stirring paddle drives the styrene butadiene latex to rotate and reaches a certain speed, the styrene butadiene latex will follow the stirring paddle to rotate by inertia, thereby reducing the efficiency of mixing and stirring the styrene butadiene latex.

[0004] To achieve the above object, the utility model provides the following technical solutions: a device for improving the conversion rate of styrene-butadiene latex, comprising a reactor and a stirring system;

[0005] The upper end of the reactor is provided with a stirring system, and a stirring paddle is provided in the reactor, the stirring paddle is connected to the stirring system, and the outer wall of the stirring paddle is provided with multiple springs;

[0006] The outer wall of the stirring paddle is provided with a fixed block, a connecting rod is inserted in the fixed block, a fixed rod is provided at the left end of the connecting rod, and a spring is welded and fixed to the outer wall of the fixed rod. When the stirring paddle rotates, the spring on the outer wall of the fixed rod will follow the rotation to stir the styrene-butadiene latex.

[0007] Preferably, a gravity ball is provided at the lower left end of the spring, and the gravity ball is fixedly connected to the spring by welding. The gravity ball is used to add a configuration to the spring to allow it to swing.

[0008] Preferably, a screw is provided at the front end of the fixing block, and the screw is used to screw a connecting rod inserted into the fixing block, and the connecting rod is welded and fixed to the fixing rod at an angle of 150 degrees.

[0009] Preferably, the fixing block, connecting rod, fixing rod, spring and gravity ball are all made of stainless steel.

[0010] Preferably, an input system is provided on the left side of the lower end of the reactor, steam is provided on the right side of the lower end of the reactor, and an output system is provided in the middle of the lower end of the reactor. The input system and the output system are used to transport and discharge materials into and out of the reactor.

[0011] Preferably, a temperature gauge is provided on the lower left side of the reactor, and a temperature control system is provided on the upper left side of the reactor, and the temperature gauge is used to check the temperature inside the reactor.

[0012] Preferably, a monomer pipeline 1 is provided on the right side of the upper end of the reactor, and a monomer pipeline 2 is provided on the right side of the monomer pipeline 1. The monomer pipeline 1 and the monomer pipeline 2 are used for conveying additives.

[0013] Preferably, a pressure gauge is provided on the left side of the upper end of the reactor, an auxiliary agent pipeline is provided on the right side of the pressure gauge, and an initiator pipeline is provided on the right side of the auxiliary agent pipeline.

[0014] Preferably, a steam pipeline is provided on the right side of the initiator pipeline, and a nitrogen pipeline is provided on the right side of the steam pipeline.

[0015] Compared with the prior art, the present invention provides a device for improving the conversion rate of styrene-butadiene latex, which has the following beneficial effects:

[0016] The styrene butadiene latex is transported into the reactor through the input system. After the styrene butadiene latex is transported into the reactor, the stirring system drives the stirring paddle to rotate, and the styrene butadiene latex in the reactor is stirred by the stirring paddle. During the stirring process of the styrene butadiene latex, the initiator pipeline will transport the initiator into the reactor, so that the styrene butadiene latex reacts during the stirring process. While the stirring paddle rotates, the spring on the outer wall of the fixed rod will rotate along with the stirring paddle, and in the process of the spring following the rotation of the stirring paddle, the spring will increase the stirring area of ​​the styrene butadiene latex, and the styrene butadiene latex will be broken up again through the gap between the springs, so that the styrene butadiene latex and the initiator are better mixed in the gap, and the gravity ball at the lower end of the spring will drive the spring to swing due to the inertia of the weight during the rotation of the spring, thereby increasing the stirring range of the surrounding styrene butadiene latex by the spring, increasing the efficiency of the spring in breaking up the styrene butadiene latex, and avoiding the situation where the styrene butadiene latex rotates with the stirring paddle by the swinging spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of a device for improving the conversion rate of styrene-butadiene latex.

[0018] Figure 2 This is a schematic diagram of the connection structure between the fixing block and the fixing rod of the utility model.

[0019] Figure 3 This is a schematic diagram of the planed structure of the fixed block and the connecting rod of the utility model.

[0020] In the figure: 1. Input system; 2. Thermometer; 3. Temperature control system; 4. Pressure gauge; 5. Auxiliary agent pipeline; 6. Initiator pipeline; 7. Steam pipeline; 8. Nitrogen pipeline; 9. Stirring system; 10. Monomer pipeline 1; 11. Monomer pipeline 2; 12. Stirring paddle; 13. Spring; 14. Screw; 15. Steam; 16. Output system; 17. Gravity ball; 18. Fixed rod; 19. Connecting rod; 20. Fixed block; 21. Reactor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-3 The device for improving the conversion rate of styrene-butadiene latex shown includes a reaction kettle 21 and a stirring system 9;

[0023] A stirring system 9 is provided at the upper end of the reactor 21. A stirring paddle 12 is provided in the reactor 21. The stirring paddle 12 is connected to the stirring system 9. A plurality of springs 13 are provided on the outer wall of the stirring paddle 12.

[0024] A fixed block 20 is provided on the outer wall of the stirring paddle 12, a connecting rod 19 is inserted in the fixed block 20, a fixed rod 18 is provided on the left end of the connecting rod 19, and a spring 13 is welded and fixed on the outer wall of the fixed rod 18. When the stirring paddle 12 rotates, the spring 13 on the outer wall of the fixed rod 18 will follow the rotation to stir the styrene-butadiene latex.

[0025] The stirring system 9 drives the stirring paddle 12 to rotate, and the stirring paddle 12 is used to stir the styrene butadiene latex in the reactor 21. While the stirring paddle 12 rotates, the spring 13 on the outer wall of the fixed rod 18 will rotate along with the stirring paddle 12. In the process of the spring 13 following the rotation of the stirring paddle 12, the spring 13 will increase the area of ​​stirring of the styrene butadiene latex, and the gaps between the springs 13 will be used to break up the styrene butadiene latex again, so that the styrene butadiene latex and the initiator can be better mixed in the gaps.

[0026] like Figure 2 As shown, a gravity ball 17 is provided at the lower left end of the spring 13. The gravity ball 17 is fixedly connected to the spring 13 by welding. The gravity ball 17 is used to add a configuration to the spring 13 to allow it to swing.

[0027] The gravity ball 17 at the lower end of the spring 13 will drive the spring 13 to swing by the inertia of the weight during the rotation of the spring 13, thereby increasing the stirring range of the surrounding styrene butadiene latex by the spring 13 and increasing the efficiency of the spring 13 in breaking up the styrene butadiene latex.

[0028] like Figure 2 and Figure 3 As shown, a screw 14 is provided at the front end of the fixing block 20, and the screw 14 is used to screw the connecting rod 19 inserted into the inside of the fixing block 20. The connecting rod 19 is welded and fixed to the fixing rod 18 at an angle of 150 degrees. The fixing block 20, the connecting rod 19, the fixing rod 18, the spring 13 and the gravity ball 17 are all made of stainless steel.

[0029] The fixed block 20, connecting rod 19, fixed rod 18, spring 13 and gravity ball 17 made of stainless steel can prevent rust from contaminating styrene butadiene latex. The fixed rod 18 and connecting rod 19 welded and fixed at an angle of 150 degrees can allow the spring 13 to be fixed at an angle on both sides of the stirring paddle 12, thereby better stirring the styrene butadiene latex.

[0030] like Figure 1 As shown, an input system 1 is provided on the left side of the lower end of the reactor 21, steam 15 is provided on the right side of the lower end of the reactor 21, and an output system 16 is provided in the middle of the lower end of the reactor 21. The input system 1 and the output system 16 are used to transport and discharge materials into and out of the reactor 21.

[0031] The styrene butadiene latex is transported into the reactor 21 through the input system 1 , and can be discharged to the outside through the output system 16 after the styrene butadiene latex is stirred.

[0032] like Figure 1 As shown, a thermometer 2 is provided on the lower left side of the reactor 21, and a temperature control system 3 is provided on the upper left side of the reactor 21. The thermometer 2 is used to check the temperature inside the reactor 21. A monomer pipe 10 is provided on the right side of the upper end of the reactor 21, and a monomer pipe 2 11 is provided on the right side of the monomer pipe 10. The monomer pipe 10 and the monomer pipe 2 11 are used to transport additives.

[0033] The temperature inside the reactor 21 is controlled by the temperature control system 3 , and the temperature inside the reactor 21 can also be checked through the temperature meter 2 .

[0034] like Figure 1 As shown, a pressure gauge 4 is provided on the left side of the upper end of the reactor 21, an auxiliary agent pipeline 5 is provided on the right side of the pressure gauge 4, an initiator pipeline 6 is provided on the right side of the auxiliary agent pipeline 5, a steam pipeline 7 is provided on the right side of the initiator pipeline 6, and a nitrogen pipeline 8 is provided on the right side of the steam pipeline 7.

[0035] The pressure gauge 4 is used to check the internal pressure of the reactor 21 so that the staff can check it. The initiator and the auxiliary agent are added to the stirring styrene-butadiene latex through the auxiliary agent pipeline 5 and the initiator pipeline 6.

[0036] The working principle of the utility model is as follows: the styrene butadiene latex is transported into the reactor 21 through the input system 1. After the styrene butadiene latex is transported into the reactor 21, the stirring system 9 drives the stirring paddle 12 to rotate. The styrene butadiene latex in the reactor 21 is stirred by the stirring paddle 12. During the stirring of the styrene butadiene latex, the auxiliary agent pipeline 5 and the initiator pipeline 6 add initiator and auxiliary agent to the stirred styrene butadiene latex, so that the styrene butadiene latex reacts during the stirring process. When the stirring paddle 12 rotates, the spring 13 on the outer wall of the fixed rod 18 rotates along with the stirring paddle 12. In the process of the spring 13 following the rotation of the stirring paddle 12, the spring 13 will increase the area of ​​stirring the styrene butadiene latex, and the styrene butadiene latex will be broken up again through the gaps between the springs 13, so that the styrene butadiene latex and the initiator can be better mixed in the gaps. In addition, the gravity ball 17 at the lower end of the spring 13 will drive the spring 13 to swing through the inertia of its weight during the rotation of the spring 13, thereby increasing the stirring range of the surrounding styrene butadiene latex by the spring 13 and increasing the efficiency of the spring 13 in breaking up the styrene butadiene latex. After the stirring of the styrene butadiene latex is completed, the styrene butadiene latex can be discharged outward through the output system 16.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for improving the conversion rate of styrene-butadiene latex, comprising a reaction kettle (21) and a stirring system (9); The upper end of the reactor (21) is provided with a stirring system (9), and a stirring paddle (12) is provided in the reactor (21). The stirring paddle (12) is connected to the stirring system (9), and a plurality of springs (13) are provided on the outer wall of the stirring paddle (12); Its characteristics are: The outer wall of the stirring paddle (12) is provided with a fixed block (20), a connecting rod (19) is inserted into the fixed block (20), a fixed rod (18) is provided at the left end of the connecting rod (19), and a spring (13) is welded and fixed to the outer wall of the fixed rod (18). When the stirring paddle (12) rotates, the spring (13) on the outer wall of the fixed rod (18) will follow the rotation to stir the styrene-butadiene latex.

2. A device for improving the conversion of styrene-butadiene latex according to claim 1, characterized in that: A gravity ball (17) is provided at the lower left end of the spring (13), and the gravity ball (17) is fixedly connected to the spring (13) by welding. The gravity ball (17) is used to add configuration to the spring (13) to allow it to swing.

3. A device for improving the conversion of styrene-butadiene latex according to claim 1, characterized in that: The front end of the fixing block (20) is provided with a screw (14), and the screw (14) is used to screw a connecting rod (19) inserted into the interior of the fixing block (20), and the connecting rod (19) is welded and fixed to the fixing rod (18) at an angle of 150 degrees.

4. A device for improving the conversion rate of styrene-butadiene latex according to claim 1, characterized in that: The fixing block (20), the connecting rod (19), the fixing rod (18), the spring (13) and the gravity ball (17) are all made of stainless steel.

5. A device for improving the conversion rate of styrene-butadiene latex according to claim 1, characterized in that: An input system (1) is provided on the left side of the lower end of the reactor (21), steam (15) is provided on the right side of the lower end of the reactor (21), and an output system (16) is provided in the middle of the lower end of the reactor (21). The input system (1) and the output system (16) are used to transport and discharge materials into and out of the reactor (21).

6. A device for improving the conversion rate of styrene-butadiene latex according to claim 1, characterized in that: A temperature gauge (2) is provided on the lower left side of the reactor (21), and a temperature control system (3) is provided on the upper left side of the reactor (21). The temperature gauge (2) is used to check the temperature inside the reactor (21).

7. A device for improving the conversion rate of styrene-butadiene latex according to claim 1, characterized in that: A monomer pipeline (10) is provided on the right side of the upper end of the reactor (21), and a monomer pipeline (11) is provided on the right side of the monomer pipeline (10). The monomer pipeline (10) and the monomer pipeline (11) are used to transport additives.

8. A device for improving the conversion rate of styrene-butadiene latex according to claim 1, characterized in that: A pressure gauge (4) is provided on the left side of the upper end of the reactor (21), an auxiliary agent pipeline (5) is provided on the right side of the pressure gauge (4), and an initiator pipeline (6) is provided on the right side of the auxiliary agent pipeline (5).

9. A device for improving the conversion rate of styrene-butadiene latex according to claim 8, characterized in that: A steam pipeline (7) is provided on the right side of the initiator pipeline (6), and a nitrogen pipeline (8) is provided on the right side of the steam pipeline (7).

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