Mixing method polyvinyl chloride paste resin defoaming agent preparing and feeding device

Abstract

The utility model relates to the technical field of auxiliary agent preparation, in particular to a mixing method polyvinyl chloride paste resin defoaming agent preparation and feeding device which comprises a stock solution storage tank, a desalting water tank, a preparation tank and a controller. And a first treatment pipeline is fixedly communicated between the outlet of the stock solution storage tank and the stock solution feeding hole of the preparation tank. The defoaming agent preparation and feeding device is reasonable and compact in structure and convenient to use, and is used as a defoaming agent preparation and feeding device, a defoaming agent stock solution and desalted water can be automatically added into a preparation tank in the whole defoaming agent aqueous solution preparation process, automatic preparation is realized, the operation is convenient and fast, the labor intensity and potential safety hazards of operators are greatly reduced, and the production efficiency is improved. The stability of the preparation concentration of the defoaming agent is improved, and the normal operation of the whole polyvinyl chloride paste resin process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary agent preparation, and is a mixing method polyvinyl chloride paste resin defoaming agent preparation and feeding device. Background Art

[0002] The production equipment of mixed polyvinyl chloride paste resin is mainly divided into auxiliary agent process, polymerization process, stripping process, recovery process, drying process and water treatment process according to production performance. Although the production equipment has been optimized for many years, there are still many manual operations in the production equipment, especially the auxiliary agent preparation and addition equipment, which are mostly manually operated by personnel and have many safety and quality risks in the operation process.

[0003] At present, the defoaming agent used in the production process of mixed polyvinyl chloride paste resin is mainly silicone oil type defoaming agent (concentration is 25%). Before use, it needs to be prepared into a defoaming agent aqueous solution with a mass concentration of 5% with desalted water. At the end of the polymerization kettle reaction, during the discharging process, a metering pump is used to add the defoaming agent to the intermittent stripping tank according to the formula amount to eliminate the large number of bubbles generated by the sudden decrease in emulsion pressure during the discharging process and the gasification of the unreacted vinyl chloride monomer in the emulsion, so as to avoid excessive bubbles affecting the discharging recovery process.

[0004] However, the existing defoamers have the following problems during preparation:

[0005] First, since the defoamer stock solution is packaged in 25 kg barrels, the operator needs to manually open the defoamer barrel cover each time it is prepared, manually pour the defoamer stock solution into the defoamer preparation tank, and then manually open the desalted water, add the formulated amount of desalted water through the flow meter, and then close the valve. During the preparation process, the operator needs to pay attention to the flow meter reading at all times, and due to different operators, there is a measurement deviation in the amount of desalted water added, which causes the concentration of the defoamer preparation to change, affecting the defoaming effect;

[0006] Second, operators need to prepare defoaming agent 8 to 9 times a day, which increases the labor intensity of operators.

[0007] In summary, the existing defoamer preparation operation process has the problems of frequent operations by employees, high labor intensity, long operation time and unstable concentration of the defoamer preparation. Summary of the invention

[0008] The utility model provides a mixed method polyvinyl chloride paste resin defoamer preparation and feeding device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of high labor intensity, long operation time and unstable defoamer preparation concentration in the prior defoamer preparation operation process.

[0009] The technical solution of the present utility model is achieved through the following measures: A device for preparing and feeding a defoaming agent for a mixed method polyvinyl chloride paste resin, including a stock solution storage tank, a demineralized water tank, a preparation tank, and a controller. The top of the preparation tank is provided with a stock solution inlet and a demineralized water inlet. There is a first treatment pipeline fixedly connected between the outlet of the stock solution storage tank and the stock solution inlet of the preparation tank. There is a second treatment pipeline fixedly connected between the outlet of the demineralized water tank and the demineralized water inlet of the preparation tank. The outlet of the preparation tank is fixedly connected with a third treatment pipeline. An electric control pump is provided on the first treatment pipeline, an electric control valve is provided on the second treatment pipeline, a liquid level detector is provided on the preparation tank, and the controller is electrically connected to the electric control pump, the electric control valve, and the liquid level detector respectively.

[0010] The following is a further optimization or / and improvement of the above-mentioned technical solution of the utility model:

[0011] The bottoms of the above-mentioned stock solution storage tank and the preparation tank are arranged in an inclined shape with the left side higher than the right side, and a stirrer is provided inside the preparation tank.

[0012] An electromagnetic flowmeter I is provided on the first treatment pipeline between the above-mentioned electric control pump and the preparation tank, an electromagnetic flowmeter II is provided on the second treatment pipeline between the electric control valve and the preparation tank, and the controller is also electrically connected to the electromagnetic flowmeter I and the electromagnetic flowmeter II respectively.

[0013] An outlet pump is provided on the above-mentioned third treatment pipeline. Bypass pipelines are fixedly connected to the third treatment pipeline on the left and right sides corresponding to the outlet pump, and a safety valve is provided on the bypass pipeline.

[0014] A concentration detector is provided on the outer side of the lower part of the above-mentioned preparation tank.

[0015] A manual feeding pipeline is fixedly connected to the second treatment pipeline between the above-mentioned electromagnetic flowmeter II and the preparation tank.

[0016] The structure of the present utility model is reasonable and compact, and it is convenient to use. As a device for preparing and feeding an auxiliary defoaming agent, during the entire preparation process of the defoaming agent aqueous solution, the defoaming agent stock solution and demineralized water can be automatically added to the preparation tank, realizing automatic preparation, with convenient operation, greatly reducing the labor intensity and safety hazards of the operators, improving the stability of the defoaming agent preparation concentration, and ensuring the normal operation of the entire polyvinyl chloride paste resin process. Description of the Drawings

[0017] Attached Figure 1 is a process flow schematic diagram of the present utility model.

[0018] Attached Figure 1The encodings in it are as follows: 1 is the stock solution storage tank, 2 is the demineralized water tank, 3 is the preparation tank, 4 is the first treatment pipeline, 5 is the second treatment pipeline, 6 is the third treatment pipeline, 7 is the electric control pump, 8 is the electric control valve, 9 is the liquid level detector, 10 is the stirrer, 11 is the electromagnetic flowmeter I, 12 is the electromagnetic flowmeter II, 13 is the discharge pump, 14 is the bypass pipeline, 15 is the safety valve, 16 is the concentration detector, and 17 is the manual feeding pipeline. Detailed implementation mode

[0019] The present utility model is not limited by the following embodiments, and the specific implementation mode can be determined according to the technical solution of the present utility model and the actual situation.

[0020] In the present utility model, without special instructions, the equipment and devices used are all the existing well-known and commonly used equipment and devices in the art. For example, the electric control pump, electromagnetic flowmeter, and liquid level detector are all existing well-known and commonly used equipment.

[0021] In the present utility model, for the convenience of description, the description of the relative position relationship of each component is all carried out according to the Figure 1 layout mode of the attached drawings of the specification. For example, the position relationships such as front, back, up, down, left, and right are determined according to the Figure 1 layout direction of the attached drawings of the specification.

[0022] The present utility model will be further described below in conjunction with the embodiments and the drawings:

[0023] Embodiment 1: As shown in the Figure 1 accompanying drawings, the device for preparing and feeding the defoaming agent for the mixed polyvinyl chloride paste resin includes a stock solution storage tank 1, a demineralized water tank 2, a preparation tank 3, and a controller. The top of the preparation tank 3 is provided with a stock solution inlet and a demineralized water inlet. A first treatment pipeline 4 is fixedly connected between the outlet of the stock solution storage tank 1 and the stock solution inlet of the preparation tank 3. A second treatment pipeline 5 is fixedly connected between the outlet of the demineralized water tank 2 and the demineralized water inlet of the preparation tank 3. A third treatment pipeline 6 is fixedly connected to the outlet of the preparation tank 3. An electric control pump 7 is provided on the first treatment pipeline 4. An electric control valve 8 is provided on the second treatment pipeline 5. A liquid level detector 9 is provided on the preparation tank 3. The controller is electrically connected to the electric control pump 7, the electric control valve 8, and the liquid level detector 9 respectively.

[0024] As the device for preparing and feeding the auxiliary defoaming agent, during the whole preparation process of the defoaming agent aqueous solution, the defoaming agent stock solution and demineralized water can be automatically added to the preparation tank 3, realizing automatic preparation, with convenient operation, greatly reducing the labor intensity and safety hazards of the operators, improving the stability of the defoaming agent preparation concentration, and ensuring the normal operation of the entire polyvinyl chloride paste resin process.

[0025] According to actual needs, the above-mentioned defoamer preparation and feeding device for polyvinyl chloride paste resin by the mixing method can be further optimized or / and improved:

[0026] Example 2: The difference from Example 1 is that as shown in the appendix Figure 1 As shown, the bottoms of the stock solution storage tank 1 and the preparation tank 3 are arranged in an inclined shape with the left side higher than the right side, and a stirrer 10 is provided inside the preparation tank 3.

[0027] During use, arranging the bottoms of the stock solution storage tank 1 and the preparation tank 3 in an inclined shape can effectively make the liquids in the stock solution storage tank 1 and the preparation tank 3 mix uniformly and the concentration stable.

[0028] Example 3: The difference from Examples 1 to 2 is that as shown in the appendix Figure 1 As shown, an electromagnetic flowmeter 11 is provided on the first treatment pipeline 4 between the electric control pump 7 and the preparation tank 3, and an electromagnetic flowmeter 12 is provided on the second treatment pipeline 5 between the electric control valve 8 and the preparation tank 3. The controller is also electrically connected to the electromagnetic flowmeter 11 and the electromagnetic flowmeter 12 respectively.

[0029] During use, by setting the electromagnetic flowmeter 11 and the electromagnetic flowmeter 12, the addition amounts of the defoamer stock solution and the demineralized water can be accurately measured, which is accurate, fast and convenient.

[0030] Example 4: The difference from Examples 1 to 3 is that as shown in the appendix Figure 1 As shown, a discharge pump 13 is provided on the third treatment pipeline 6, and bypass pipelines 14 are fixedly connected to the third treatment pipeline 6 on the left and right sides of the discharge pump 13, and a safety valve 15 is provided on the bypass pipeline 14.

[0031] During use, the bypass pipeline 14 can prevent pressure buildup at the inlet and outlet of the discharge pump 13 and ensure the normal operation of the device.

[0032] Example 5: The difference from Examples 1 to 4 is that as shown in the appendix Figure 1 As shown, a concentration detector 16 is provided on the outer side of the lower part of the preparation tank 3.

[0033] During use, the concentration of the defoamer aqueous solution in the preparation tank 3 can be accurately detected by the concentration detector 16.

[0034] Example 6: The difference from Examples 3 to 5 is that as shown in the appendix Figure 1 As shown, a manual feeding pipeline 17 is fixedly connected to the second treatment pipeline 5 between the electromagnetic flowmeter 12 and the preparation tank 3.

[0035] During use, when the electric control pump 7 and the electric control valve 8 fail, the defoamer aqueous solution is manually added to the preparation tank 3 through the manual feeding pipeline 17 to ensure the normal operation of the device.

[0036] As required, on each pipeline and equipment of the foaming agent preparation and feeding device for the blended polyvinyl chloride paste resin, conventional valves, thermometers, pressure gauges, etc. that are well-known and commonly used in the art can also be provided according to production needs. The controller is a DCS controller, and the model of the DCS controller can be the CS3000 controller produced by Yokogawa Corporation of Japan.

[0037] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effects. Non-essential technical features can be increased or decreased according to actual needs to meet the requirements of different situations.

[0038] The usage process of the embodiment of the present utility model: First, when the liquid level detector 9 detects that the liquid level of the preparation tank 3 is lower than the set value, the controller controls the electric control valve 8 to open. The demineralized water in the demineralized water tank 2 passes through the second treatment pipeline 5 and is metered by the electromagnetic flowmeter II 12 and then sent to the preparation tank 3. After the addition of demineralized water is completed, the electric control valve 8 is controlled to close, and the electric control pump 7 is turned on. The defoaming agent stock solution in the stock solution tank 1 passes through the first treatment pipeline 4 and is metered by the electromagnetic flowmeter I 11 and then sent to the preparation tank 3. After the addition of the defoaming agent stock solution is completed, the electric control pump 7 is controlled to close. Then, the defoaming agent aqueous solution in the preparation tank 3 is stirred and mixed evenly by the stirrer 10. Finally, the concentration of the defoaming agent aqueous solution in the preparation tank 3 is detected by the concentration detector 16. When the concentration of the defoaming agent aqueous solution reaches the set value, the defoaming agent aqueous solution is sent to the subsequent intermittent stripping tank for treatment through the third treatment pipeline 6.

Claims

1. A preparation and feeding device for a defoamer of a blended polyvinyl chloride paste resin, characterized in that It includes a stock solution storage tank, a demineralized water tank, a preparation tank and a controller. The top of the preparation tank is provided with a stock solution inlet and a demineralized water inlet. There is a first treatment pipeline fixedly connected between the outlet of the stock solution storage tank and the stock solution inlet of the preparation tank. There is a second treatment pipeline fixedly connected between the outlet of the demineralized water tank and the demineralized water inlet of the preparation tank. The outlet of the preparation tank is fixedly connected with a third treatment pipeline. An electric control pump is provided on the first treatment pipeline. An electric control valve is provided on the second treatment pipeline. A liquid level detector is provided on the preparation tank. The controller is electrically connected to the electric control pump, the electric control valve and the liquid level detector respectively.

2. The compounding and feeding device for the defoamer of the blended polyvinyl chloride paste resin according to claim 1, characterized in that The bottom of the stock solution storage tank and the preparation tank is arranged in an inclined shape with the left side higher than the right side, and a stirrer is arranged inside the preparation tank.

3. The compounding and feeding device for the defoamer of the hybrid polyvinyl chloride paste resin according to claim 1 or 2, characterized in that An electromagnetic flowmeter 1 is provided on the first treatment pipeline between the electric control pump and the preparation tank. An electromagnetic flowmeter 2 is provided on the second treatment pipeline between the electric control valve and the preparation tank. The controller is also electrically connected to the electromagnetic flowmeter 1 and the electromagnetic flowmeter 2 respectively.

4. The preparation and feeding device for the defoamer of the blended polyvinyl chloride paste resin according to claim 1 or 2, characterized in that An outlet pump is provided on the third treatment pipeline. Bypass pipelines are fixedly connected to the left and right sides of the third treatment pipeline corresponding to the outlet pump, and a safety valve is provided on the bypass pipeline.

5. The compounding and feeding device for the defoamer of the mixed polyvinyl chloride paste resin according to claim 3, wherein An outlet pump is provided on the third treatment pipeline. Bypass pipelines are fixedly connected to the left and right sides of the third treatment pipeline corresponding to the outlet pump, and a safety valve is provided on the bypass pipeline.

6. The compounding and feeding device for the defoamer of the mixed method polyvinyl chloride paste resin according to claim 1 or 2 or 5, characterized in that A concentration detector is provided on the outer side of the lower part of the preparation tank.

7. The preparation and feeding device for the defoamer of the blended polyvinyl chloride paste resin according to claim 3, characterized in that A concentration detector is provided on the outer side of the lower part of the preparation tank.

8. The compounding and feeding device for the defoamer of the blended polyvinyl chloride paste resin according to claim 4, characterized in that A concentration detector is provided on the outer side of the lower part of the preparation tank.

9. The preparation and feeding device for the defoaming agent of the hybrid PVC paste resin according to claim 5 or 7 or 8, characterized in that A manual feeding pipeline is fixedly connected to the second treatment pipeline between the electromagnetic flowmeter 2 and the preparation tank.

10. The compounding and feeding device for the defoamer of the mixed polyvinyl chloride paste resin according to claim 6, characterized in that A manual feeding pipeline is fixedly connected to the second treatment pipeline between the electromagnetic flowmeter 2 and the preparation tank.

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