Device for degassing styrene-butadiene latex and reducing impurity backflow
By designing a combination of components such as the reactor body, foam generator, negative pressure machine, U-tube and storage tank in the production process of styrene-butadiene latex, the problem of impurity accumulation in the U-shaped bend was solved, and the temporary storage and separation of impurities were realized, ensuring product quality and production continuity.
Patent Information
- Application Number
- CN202422238216.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-12
AI Technical Summary
During the production of styrene-butadiene latex, after the shut-off valve for conveying impurities is closed, impurities can easily accumulate in the U-bend, leading to tank blockage or slow backflow, which affects product quality.
A device comprising a vessel body, a foam generator, a negative pressure unit, a U-tube, a storage tank, and a temporary storage tank was designed. By controlling the shut-off valve, the device enables the temporary storage and separation of impurities, preventing impurities from flowing back into the vessel body.
This effectively reduces the backflow of impurities into the reactor, avoids product contamination, and ensures the continuity of the production process and product quality.
Smart Images
Figure CN223170381U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to mechanical manufacturing, and particularly relates to a device for degassing styrene-butadiene latex to reduce impurity backflow. Background Art
[0002] As an environment-friendly product, styrene-butadiene latex has natural environmental advantages. However, styrene-butadiene latex is polymerized from styrene and butadiene with a part of a third monomer. After the polymerization, there are both unreacted monomers and by-products produced by the reaction in the product. Due to environmental protection requirements, impurities in styrene-butadiene latex are removed by degassing. However, when reducing impurity backflow, the cut-off valve for conveying impurities to the storage tank is closed, resulting in the re-accumulation of impurities in the U-shaped bend. If the discharge in the storage tank is blocked or slow, the impurities will flow back again. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a device for degassing styrene-butadiene latex to reduce impurity backflow, so as to solve the problem of the re-accumulation of impurities in the U-shaped bend caused by closing the cut-off valve for conveying impurities to the storage tank as mentioned in the above background art.
[0004] To achieve the above purpose, the utility model provides the following technical solution: A device for degassing styrene-butadiene latex to reduce impurity backflow, including a kettle body and a foam generator installed on the right side of the kettle body;
[0005] A negative pressure machine is arranged between the kettle body and the foam generator;
[0006] A U-shaped pipe is arranged among the kettle body, the negative pressure machine and the foam generator to guide the material in the kettle body into the foam generator;
[0007] A storage tank is arranged on the right side of the kettle body to store the backflow impurities. A conveying pipe is arranged between the storage tank and the U-shaped pipe to guide the backflow impurities in the U-shaped pipe into the storage tank. A cut-off valve a is arranged on the lower side of the conveying pipe to control the backflow impurities from entering the inside of the conveying pipe. A cut-off valve c is arranged on the outer wall of the lower end of the storage tank to discharge the backflow impurities to the sewage system;
[0008] A temporary storage tank is arranged inside the conveying pipe to store the impurities that flow back in the U-shaped pipe after the cut-off valve a is closed.
[0009] Preferably, a break is opened inside the center of the conveying pipe to provide a position for the temporary storage tank. The upper outer wall of the temporary storage tank is fixedly connected with a feed inlet to connect to the cut section of the conveying pipe.
[0010] Preferably, a discharge port is arranged on the lower side of the temporary storage tank to connect to the cut section of the conveying pipe. The lower outer wall of the temporary storage tank is fixedly connected with a guiding hopper.
[0011] Preferably, an observation port is embedded in the front outer wall of the temporary storage tank to observe the quantity of stored materials inside the temporary storage tank. The observation port is embedded inside the temporary storage tank and is transparent.
[0012] Preferably, a liquid level sensor is fixedly connected to the circular outer wall at the right end of the storage tank to monitor the height of the impurity liquid level in the storage tank. A cut-off valve b is arranged on the upper outer wall of the storage tank and on the right side of the cut-off valve a.
[0013] Preferably, a driving motor is arranged on the upper side of the kettle body, and the driving motor is electrically connected to an external power supply.
[0014] Preferably, a stirrer is fixedly connected to the lower outer wall of the driving motor to stir the raw materials in the kettle body. A plurality of feed valves are equidistantly arranged on the lower outer wall of the kettle body.
[0015] Preferably, a plurality of discharge valves are equidistantly arranged on the upper outer wall of the foam generator. A feeding pipeline is arranged between the kettle body and the foam generator.
[0016] Compared with the prior art, the utility model provides a device for reducing impurity backflow in the degassing of styrene-butadiene latex, which has the following beneficial effects:
[0017] By installing a temporary storage tank, when impurities are discharged from the U-shaped pipe, after closing the cut-off valve a, the impurities in the U-shaped pipe can be discharged into the temporary storage tank for temporary storage, avoiding the situation that the impurities in the U-shaped pipe flow back into the kettle body. And after the cut-off valve a is opened, the impurities in the temporary storage tank can fall into the storage tank for separation to avoid the situation of impurity backflow again. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic structural diagram of a device for reducing impurity backflow in the degassing of styrene-butadiene latex according to the utility model.
[0019] Figure 2 is a front view sectional structural diagram of the temporary storage tank area according to the utility model.
[0020] Figure 3 is a structural diagram of the temporary storage tank area according to the utility model.
[0021] In the figure: 1, kettle body; 2, stirrer; 3, driving motor; 4, negative pressure machine; 5, foam generator; 6, U-shaped pipe; 7, conveying pipe; 8, temporary storage tank; 9, cut-off valve a; 10, cut-off valve b; 11, liquid level sensor; 12, storage tank; 13, cut-off valve c; 14, feed valve; 15, feed port; 16, break; 17, observation port; 18, guiding hopper; 19, discharge port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] The present utility model provides a device for reducing impurity reflux in the degassing of styrene-butadiene latex as shown in Figures 1-3 Figure 5, which includes a kettle body 1 and a foam device 5 installed on the right side of the kettle body 1;
[0024] A negative pressure machine 4 is arranged between the kettle body 1 and the foam device 5;
[0025] A U-shaped pipe 6 is arranged among the kettle body 1, the negative pressure machine 4 and the foam device 5 to guide the materials in the kettle body 1 into the foam device 5;
[0026] A storage tank 12 is arranged on the right side of the kettle body 1 to store the refluxed impurities. A conveying pipe 7 is arranged between the storage tank 12 and the U-shaped pipe 6 to guide the refluxed impurities in the U-shaped pipe 6 into the storage tank 12. A cut-off valve a9 is arranged on the lower side of the conveying pipe 7 to control the refluxed impurities from entering the interior of the conveying pipe 7. A cut-off valve c13 is arranged on the outer wall of the lower end of the storage tank 12 to discharge the refluxed impurities to the sewage system. When the kettle body 1 mixes and conveys the materials into the foam device 5 and at the start of the degassing operation, the cut-off valve a9 is opened, and the materials refluxed in the U-shaped pipe 6 will enter the storage tank 12 for storage. When the materials in the storage tank 12 accumulate to a certain amount, the cut-off valve a9 is closed and the cut-off valve c13 is opened to discharge the materials to the sewage system. And after the materials are emptied, the cut-off valve c13 is closed and the cut-off valve a9 is opened to continue the operation of recovering the refluxed materials, thereby reducing the occurrence of the situation of refluxing into the kettle body 1 and reducing the pollution to the product;
[0027] A temporary storage tank 8 is arranged inside the conveying pipe 7 to store the impurities refluxed in the U-shaped pipe 6 after the cut-off valve a9 is closed. When the cut-off valve a9 is closed, the impurity materials refluxed in the U-shaped pipe 6 will be guided through the conveying pipe 7 into the temporary storage tank 8 for temporary storage, avoiding the situation of the impurity materials refluxing after the cut-off valve a9 is closed.
[0028] As shown in Figure 2 Figure 7, a break 16 is formed inside the center of the conveying pipe 7 to provide a position for the temporary storage tank 8. The upper outer wall of the temporary storage tank 8 is fixedly connected with a feed inlet 15 to connect to the cut section of the conveying pipe 7. The lower side of the temporary storage tank 8 is provided with a discharge outlet 19 to connect to the cut section of the conveying pipe 7. The lower outer wall of the temporary storage tank 8 is fixedly connected with a guiding hopper 18.
[0029] The installation position of the temporary storage tank 8 is provided through the fracture 16. Meanwhile, a feed inlet 15 and a discharge outlet 19 are respectively arranged on the upper and lower sides of the temporary storage tank 8 and are connected to the cut-off conveying pipe 7. After the impurity materials enter the temporary storage tank 8, they can be guided by the guiding hopper 18 and led from the conveying pipe 7 below the discharge outlet 19 into the storage tank 12.
[0030] As Figure 2 and Figure 3 shown, an observation port 17 is embedded in the front outer wall of the temporary storage tank 8 to observe the quantity of stored materials inside the temporary storage tank 8. The observation port 17 is embedded inside the temporary storage tank 8 and is transparent.
[0031] By looking through the transparent observation port 17, the state and height of the impurity materials in the temporary storage tank 8 can be observed.
[0032] As Figure 1 shown, a liquid level sensor 11 is fixedly connected to the right circular outer wall of the storage tank 12 to monitor the height of the impurity liquid level in the storage tank 12. A cut-off valve b10 is arranged on the upper outer wall of the storage tank 12 and on the right side of the cut-off valve a9. A driving motor 3 is arranged on the upper side of the kettle body 1, and the driving motor 3 is electrically connected to an external power source.
[0033] The height of the liquid level in the storage tank 12 is detected by the liquid level sensor 11, and the liquid level sensor 11 is interlocked with the cut-off valve a9, the cut-off valve b10, and the cut-off valve c13. When the height of the liquid level in the storage tank 12 reaches the uppermost side, the cut-off valve a9 closes, and the cut-off valve b10 and the cut-off valve c13 are opened to discharge the refluxed impurity materials into the sewage system. When the height of the liquid level in the storage tank 12 drops to the initial state where the interlock is released, the cut-off valve b10 and the cut-off valve c13 close, and the cut-off valve a9 opens to continue receiving the refluxed impurity materials.
[0034] As Figure 1 shown, a stirrer 2 is fixedly connected to the lower outer wall of the driving motor 3 to stir the raw materials in the kettle body 1. A plurality of feed valves 14 are equidistantly arranged on the lower outer wall of the kettle body 1. A plurality of discharge valves are equidistantly arranged on the upper outer wall of the foam generator 5. A feed pipeline is arranged between the kettle body 1 and the foam generator 5.
[0035] After the driving motor 3 is powered on, it drives the stirrer 2 to rotate in the kettle body 1 to mix and stir the materials in the kettle body 1. Through the plurality of feed valves 14, various different materials or gases can be added into the interior of the kettle body 1. The materials in the kettle body 1 are guided into the foam generator 5 through the feed pipeline by the negative pressure machine 4 for processing.
[0036] The implementation principle of this embodiment is as follows: when the materials are mixed and transported to the foam generator 5 in the kettle body 1 and when the degassing operation starts, the cut-off valve a9 is opened, and the materials flowing back in the U-shaped pipe 6 will enter the storage tank 12 for storage. When the materials in the storage tank 12 accumulate to a certain amount, the cut-off valve a9 is closed and the cut-off valve c13 is opened to discharge the materials to the sewage system. After the materials are emptied, the cut-off valve c13 is closed and the cut-off valve a9 is opened to continue the operation of recycling the flowing-back materials, thereby reducing the occurrence of the situation where the materials flow back into the kettle body 1 and reducing the pollution to the product. When the cut-off valve a9 is closed, the impurity materials flowing back in the U-shaped pipe 6 will be guided to the temporary storage tank 8 through the conveying pipe 7 for temporary storage, avoiding the occurrence of the situation where the impurity materials flow back after the cut-off valve a9 is closed.
[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An apparatus for reducing impurity reflux in the degassing of styrene-butadiene latex, comprising a kettle body (1) and a foam generator (5) installed on the right side of the kettle body (1); A negative pressure machine (4) is provided between the kettle body (1) and the foam generator (5); A U-shaped pipe (6) is provided between the kettle body (1), the negative pressure machine (4) and the foam generator (5) to guide the material in the kettle body (1) into the foam generator (5); A storage tank (12) is provided on the right side of the kettle body (1) to store the refluxed impurities. A conveying pipe (7) is provided between the storage tank (12) and the U-shaped pipe (6) to guide the refluxed impurities in the U-shaped pipe (6) into the storage tank (12). A cut-off valve a (9) is provided on the lower side of the conveying pipe (7) to control the entry of the refluxed impurities into the interior of the conveying pipe (7). A cut-off valve c (13) is provided on the outer wall at the lower end of the storage tank (12) to discharge the refluxed impurities to the sewage system; It is characterized in that: A temporary storage tank (8) is provided inside the conveying pipe (7) to store the impurities refluxed in the U-shaped pipe (6) after the cut-off valve a (9) is closed.
2. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 1, characterized in that: A break (16) is provided inside the conveying pipe (7) at its center to provide a position for the temporary storage tank (8). A feed port (15) is fixedly connected to the outer wall at the upper end of the temporary storage tank (8) to connect to the cut section of the conveying pipe (7).
3. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 1, wherein: A discharge port (19) is provided on the lower side of the temporary storage tank (8) to connect to the cut section of the conveying pipe (7). A guiding hopper (18) is fixedly connected to the outer wall at the lower end of the temporary storage tank (8).
4. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 1, characterized in that: An observation port (17) is embedded in the outer wall at the front end of the temporary storage tank (8) to observe the quantity of the stored material inside the temporary storage tank (8). The observation port (17) is embedded inside the temporary storage tank (8) and is transparent.
5. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 1, characterized in that: A liquid level sensor (11) is fixedly connected to the circular outer wall at the right end of the storage tank (12) to monitor the height of the impurity liquid level in the storage tank (12). A cut-off valve b (10) is provided on the outer wall at the upper end of the storage tank (12) and on the right side of the cut-off valve a (9).
6. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 1, characterized in that: A driving motor (3) is provided on the upper side of the kettle body (1), and the driving motor (3) is electrically connected to an external power source.
7. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 6, characterized in that: A stirrer (2) is fixedly connected to the outer wall at the lower end of the driving motor (3) to stir the raw materials in the kettle body (1). A plurality of feed valves (14) are equidistantly provided on the outer wall at the lower end of the kettle body (1).
8. The device for reducing impurity reflux in the degassing of styrene-butadiene latex according to claim 1, characterized in that: A plurality of discharge valves are equidistantly provided on the outer wall at the upper end of the foam generator (5). A feeding pipeline is provided between the kettle body (1) and the foam generator (5).