Small material feeding device based on methyl vinyl silicone rubber production

Abstract

The utility model relates to the technical field of small material feeding of methyl vinyl silicone rubber, in particular to a small material feeding device based on methyl vinyl silicone rubber production, which comprises a reaction kettle, an end-capping reagent storage tank, a catalyst storage tank, a first small material buffer tank, a second small material buffer tank and a small material mixing tank, an end-capping reagent blanking pipeline is communicated between the end-capping reagent storage tank and the first small material buffer tank, a catalyst blanking pipeline is communicated between the catalyst storage tank and the second small material buffer tank, a first supplementing pipeline is communicated between the first small material buffer tank and the small material mixing tank, and a second supplementing pipeline is communicated between the second small material buffer tank and the small material mixing tank; a small material mixing pipeline is communicated between the small material mixing tank and the reaction kettle, the end-capping reagent storage tank is communicated with a first nitrogen pipeline, and the catalyst storage tank is communicated with a second nitrogen pipeline. The feeding device is reasonable and compact in structure and convenient to use, the feeding amount of methyl vinyl silicone rubber production can be more accurate, and the feeding efficiency is also improved.

Description

Technical Field

[0001] This utility model relates to the field of small-scale feeding technology for methyl vinyl silicone rubber, and is a small-scale feeding device based on the production of methyl vinyl silicone rubber. Background Technology

[0002] Methyl vinyl silicone rubber is mainly produced by using siloxane mixed rings as the main raw material, with specific additives, and processed through polymerization, desulfurization and other processes.

[0003] Methyl vinyl silicone rubber is a special polymer chemical. Its main molecular chain consists of Si-O bonds with high bond energy, and its side groups are organic groups with various characteristics. This structure and composition give it a series of properties such as resistance to high and low temperatures, resistance to weathering and aging, fatigue resistance, excellent electrical properties, high air permeability, resistance to certain solvents, and physiological inertness. Therefore, it is widely used in various fields of the national economy, including aerospace, aviation, electronics, electrical, machinery, automobiles, light industry, chemical industry, daily appliances, and medical and health care. It also plays an important role in national defense and military industries and high-tech industries.

[0004] The existing production process of methyl vinyl silicone rubber involves the polymerization of siloxane mixed cyclic compounds in a polymerization reactor. During the polymerization process, small components such as end-capping agents and catalysts need to be added manually. Manual feeding is not only inefficient, but also prone to problems such as unstable addition amounts and inconsistent addition times, which ultimately affect the product quality of methyl vinyl silicone rubber.

[0005] In summary, there is an urgent need for a small-scale feeding device for the production of methyl vinyl silicone rubber, which can solve the problems of large feeding errors and low feeding efficiency. Summary of the Invention

[0006] This invention provides a small-material feeding device for the production of methyl vinyl silicone rubber, which overcomes the shortcomings of the prior art and can effectively solve the problems of large feeding error and low feeding efficiency in the existing small-material feeding methods for the production of methyl vinyl silicone rubber.

[0007] The technical solution of this utility model is achieved through the following measures: a small material feeding device based on methyl vinyl silicone rubber production, including a reaction vessel, a capping agent storage tank, a catalyst storage tank, a first small material buffer tank, a second small material buffer tank, and a small material mixing tank. A capping agent feeding pipeline is fixedly connected between the bottom outlet of the capping agent storage tank and the top inlet of the first small material buffer tank. A catalyst feeding pipeline is fixedly connected between the bottom outlet of the catalyst storage tank and the top inlet of the second small material buffer tank. A first replenishment pipeline is fixedly connected between the bottom outlet of the first small material buffer tank and the first inlet of the top of the small material mixing tank. A second replenishment pipeline is fixedly connected between the bottom outlet of the second small material buffer tank and the second inlet of the top of the small material mixing tank. A mixing small material pipeline is fixedly connected between the bottom outlet of the small material mixing tank and the first inlet of the top of the reaction vessel. A first nitrogen pipeline is fixedly connected to the top inlet of the capping agent storage tank, and a second nitrogen pipeline is fixedly connected to the top inlet of the catalyst storage tank.

[0008] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0009] The second feed inlet at the top of the reactor is fixedly connected to a raw material input pipeline, and the discharge outlet at the bottom of the reactor is fixedly connected to a product output pipeline.

[0010] A stirrer is fixedly installed in both the aforementioned reaction vessel and the small material mixing tank.

[0011] The above-mentioned reaction vessel is equipped with a thermometer and a pressure gauge.

[0012] Both the capping agent storage tank and the catalyst storage tank mentioned above are equipped with feeding ports on the top, and air filters are installed on the feeding ports.

[0013] An air communication pipeline is fixedly connected between the air outlets at the top of the first and second small material buffer tanks, and an exhaust pipeline is fixedly connected to the air communication pipeline.

[0014] Level gauges are fixedly installed on the first small material buffer tank, the second small material buffer tank, and the small material mixing tank.

[0015] Metering pumps and flow meters are fixedly installed along the medium flow direction on the first and second replenishment pipelines.

[0016] Control valves are fixedly installed on the aforementioned end-capping agent feed line, catalyst feed line, and mixing feed line.

[0017] The above also includes a controller, and thermometers, pressure gauges, level gauges, metering pumps, flow meters, and control valves are all connected to the controller.

[0018] This utility model has a reasonable and compact structure and is easy to use. It enables more accurate and timely addition of small materials in the production of methyl vinyl silicone rubber, more precise addition ratio, and more effective promotion of polymerization reaction in the reactor. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of the process flow of this utility model.

[0020] Appendix Figure 1 The codes in the diagram are as follows: 1 for reactor, 2 for end-capping agent storage tank, 3 for catalyst storage tank, 4 for first small material buffer tank, 5 for second small material buffer tank, 6 for small material mixing tank, 7 for end-capping agent feed line, 8 for catalyst feed line, 9 for first replenishment line, 10 for second replenishment line, 11 for mixing small materials line, 12 for raw material input line, 13 for product output line, 14 for stirrer, 15 for thermometer, 16 for pressure gauge, 17 for feed port, 18 for air filter, 19 for air connection line, 20 for exhaust line, 21 for level gauge, 22 for metering pump, 23 for flow meter, 24 for control valve, 25 for first nitrogen line, and 26 for second nitrogen line. Detailed Implementation

[0021] This invention is not limited to the following embodiments; the specific implementation method can be determined according to the technical solution of this invention and the actual situation.

[0022] Unless otherwise specified, all equipment and devices used in this invention are existing, publicly known, and commonly used equipment and devices in the field.

[0023] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.

[0024] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0025] Example 1: As shown in the attached document Figure 1As shown, the small-material feeding device based on methyl vinyl silicone rubber includes a reactor 1, a capping agent storage tank 2, a catalyst storage tank 3, a first small-material buffer tank 4, a second small-material buffer tank 5, and a small-material mixing tank 6. A capping agent feeding pipeline 7 is fixedly connected between the bottom outlet of the capping agent storage tank 2 and the top inlet of the first small-material buffer tank 4. A catalyst feeding pipeline 8 is fixedly connected between the bottom outlet of the catalyst storage tank 3 and the top inlet of the second small-material buffer tank 5. A first replenishment pipeline 9 is fixedly connected between the bottom outlet of the first small-material buffer tank 4 and the top first inlet of the small-material mixing tank 6. A second replenishment pipeline 10 is fixedly connected between the bottom outlet of the second small-material buffer tank 5 and the top second inlet of the small-material mixing tank 6. A mixing small-material pipeline 11 is fixedly connected between the bottom outlet of the small-material mixing tank 6 and the top first inlet of the reactor 1. A first nitrogen pipeline 25 is fixedly connected to the top inlet of the capping agent storage tank 2, and a second nitrogen pipeline 26 is fixedly connected to the top inlet of the catalyst storage tank 3.

[0026] The above-mentioned small-material feeding device based on methyl vinyl silicone rubber production can be further optimized and / or improved according to actual needs:

[0027] Example 2: Its difference from Example 1 is as follows: (See attached) Figure 1 As shown, the second feed port at the top of the reactor 1 is fixedly connected to the raw material input pipeline 12, and the discharge port at the bottom of the reactor is fixedly connected to the product output pipeline 13.

[0028] Example 3: Its difference from Examples 1 to 2 is as follows: (See attached) Figure 1 As shown, both the reaction vessel 1 and the mixing tank 6 are equipped with a stirrer 14.

[0029] Example 4: Its difference from Examples 1 to 3 is as follows: (See attached) Figure 1 As shown, a thermometer 15 and a pressure gauge 16 are fixedly installed on the reactor 1.

[0030] Example 5: It differs from Examples 1 to 4 in that: as shown in the appendix Figure 1 As shown, both the capping agent storage tank 2 and the catalyst storage tank 3 are equipped with a feeding port 17 on the top, and an air filter 18 is installed on the feeding port 17.

[0031] Example 6: Its difference from Examples 1 to 5 is as follows: (See attached) Figure 1 As shown, an air communication pipeline 19 is fixedly connected between the air outlets at the top of the first small material buffer tank 4 and the second small material buffer tank 5, and an exhaust pipeline 20 is fixedly connected to the air communication pipeline 19.

[0032] As needed, the air connection line 19 and the exhaust line 20 can maintain pressure balance in the first small material buffer tank 4 and the second small material buffer tank 5.

[0033] Example 7: Its difference from Examples 1 to 6 is as follows: (See attached) Figure 1 As shown, level gauges 21 are fixedly installed on the first small material buffer tank 4, the second small material buffer tank 5, and the small material mixing tank 6.

[0034] As required, level gauge 21 is a float level gauge.

[0035] Example 8: It differs from Examples 1 to 7 in that: as shown in the appendix Figure 1 As shown, metering pumps 22 and flow meters 23 are fixedly installed on the first replenishment pipeline 9 and the second replenishment pipeline 10 along the medium flow direction.

[0036] As required, metering pump 22 is a gear pump, and the commercially available brand of gear pump is POMVATA, model 2610-4-1 / A / 10 / F / KA / 12 / 14 / F126.

[0037] As required, the commercially available brand of flow meter 23 is KEM, and the model is ZHM01 / EKL.ET / WT.02K-EX / 713PLUG WITH 2M CABKE.

[0038] Example 9: It differs from Examples 1 to 8 in that: as shown in the appendix Figure 1 As shown, control valves 24 are fixedly installed on the end-capping agent feed line 7, the catalyst feed line 8, and the mixing feed line 11.

[0039] Example 10: It differs from Examples 1 to 9 in that, as shown in the appendix... Figure 1 As shown, it also includes a controller, and the temperature gauge 15, pressure gauge 16, level gauge 21, metering pump 22, flow meter 23, and control valve 24 are all connected to the controller.

[0040] Depending on the needs, the pipelines and equipment of this small-material feeding device based on methyl vinyl silicone rubber production can also be equipped with conventional valves, thermometers, and pressure gauges known in the art, according to production requirements. The controller is a PLC controller, and the PLC controller model can be QPKT-0.9 (1900*1450*400). An Emerson Deltav system is installed within this PLC controller. TM Distributed Control System.

[0041] The above technical features constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

[0042] The usage process of this utility model embodiment is as follows: First, nitrogen gas is introduced into the end-capping agent storage tank 2 through the first nitrogen gas pipeline 25. The nitrogen pressure forces the end-capping agent in the end-capping agent storage tank 2 into the first small material buffer tank 4 through the end-capping agent discharge pipeline 7. At the same time, nitrogen gas is introduced into the catalyst storage tank 3 through the second nitrogen gas pipeline 26. The nitrogen pressure forces the catalyst in the catalyst storage tank 3 into the second small material buffer tank 5 through the catalyst discharge pipeline 8. Then, through the metering pump 22, the amount of end-capping agent required for the process in the first small material buffer tank 4 is added to the small material mixing tank 6 through the first replenishment pipeline 9. The required amount of catalyst in the second small material buffer tank 5 is added to the small material mixing tank 6 through the second replenishment line 10; then, the end-capping agent and catalyst in the small material mixing tank 6 are stirred and mixed by the stirrer 21 to obtain a mixed small material; finally, after adding the siloxane mixed ring into the reactor 1 and dehydrating it for 30 minutes, the mixed small material in the small material mixing tank 6 enters the reactor 1 through the small material mixing line 11 to undergo a polymerization reaction with the siloxane mixed ring to obtain a methyl vinyl silicone polymer, which enters the downstream process system through the product output line 13.

Claims

1. A small material feeding device based on methyl vinyl silicone rubber production, characterized by The system includes a reactor, a capping agent storage tank, a catalyst storage tank, a first small material buffer tank, a second small material buffer tank, and a small material mixing tank. A capping agent feeding pipeline is fixedly connected between the bottom outlet of the capping agent storage tank and the top inlet of the first small material buffer tank. A catalyst feeding pipeline is fixedly connected between the bottom outlet of the catalyst storage tank and the top inlet of the second small material buffer tank. A first replenishment pipeline is fixedly connected between the bottom outlet of the first small material buffer tank and the first inlet of the top of the small material mixing tank. A second replenishment pipeline is fixedly connected between the bottom outlet of the second small material buffer tank and the second inlet of the top of the small material mixing tank. A mixing pipeline is fixedly connected between the bottom outlet of the small material mixing tank and the first inlet of the top of the reactor. A first nitrogen pipeline is fixedly connected to the top inlet of the capping agent storage tank, and a second nitrogen pipeline is fixedly connected to the top inlet of the catalyst storage tank.

2. The small material charging device based on methylvinyl silicone rubber production according to claim 1, characterized in that The second feed inlet at the top of the reactor is fixedly connected to a raw material input pipeline, and the discharge outlet at the bottom of the reactor is fixedly connected to a product output pipeline.

3. The small material charging device based on methylvinyl silicone rubber production according to claim 1 or 2, characterized in that Agitators are fixedly installed in both the reaction vessel and the mixing tank for small materials.

4. The small material charging device based on methylvinyl silicone rubber production according to claim 3, characterized in that The thermometer and pressure gauge are fixedly installed on the reactor.

5. The small material charging device based on methylvinyl silicone rubber production according to claim 1 or 2 or 4, characterized in that Both the end-capping agent storage tank and the catalyst storage tank are equipped with feeding ports on the top, and air filters are installed on the feeding ports.

6. The small material charging device based on methylvinyl silicone rubber according to claim 5, characterized in that An air communication pipeline is fixedly connected between the air outlets at the top of the first and second small material buffer tanks, and an exhaust pipeline is fixedly connected to the air communication pipeline.

7. The small material charging device based on methylvinyl silicone rubber production according to claim 6, characterized in that Level gauges are fixedly installed on the first small material buffer tank, the second small material buffer tank, and the small material mixing tank.

8. The small-material feeding device based on methyl vinyl silicone rubber according to claim 6 or 7, characterized in that... Metering pumps and flow meters are fixedly installed along the medium flow direction on both the first and second replenishment pipelines.

9. The small material charging device based on methylvinyl silicone rubber according to claim 8, characterized in that Control valves are fixedly installed on the end-capping agent feed line, catalyst feed line, and mixing feed line.

10. The small material charging device based on methylvinyl silicone rubber production according to claim 9, characterized in that It also includes a controller, and thermometers, pressure gauges, level gauges, metering pumps, flow meters, and control valves are all connected to the controller.

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