Liquid level control device of horizontal devolatilization kettle

Abstract

The utility model discloses a horizontal devolatilization kettle liquid level control device, which relates to the technical field of devolatilization kettles and comprises a U-shaped pipe connected with one side of the bottom end of a horizontal devolatilization kettle, a first filter screen connected to the inner wall of the U-shaped pipe, a storage tank connected to one end of the U-shaped pipe, a first pipeline mounted on one side of the bottom end of the storage tank, and a second pipeline mounted on the other side of the bottom end of the storage tank. A second motor is rotatably connected to one side of the reflux pump; a second pipeline is connected to the other side of the reflux pump; one end, far away from the reflux pump, of the second pipeline is fixedly connected with the horizontal devolatilization kettle; a valve is connected to the top end of the second pipeline; the valve is rotationally connected with a rotating shaft; according to the devolatilization kettle, the liquid level control device is utilized, so that the problem that the liquid level in the liquid level storage tank is unstable due to large fluctuation of the proportion of discharged solids is solved, and the liquid level in the devolatilization kettle is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of devolatilization kettle, specifically to horizontal devolatilization kettle liquid level control device. BACKGROUND

[0002] The devolatilization kettle plays an important role in chemical production. After the polymerization reaction is completed, the monomers that have not reacted completely must be removed through the devolatilization kettle, and at the same time, the proportion of polymer solids in the discharged polymerization solution must be controlled within a certain fluctuation range. The horizontal devolatilization kettle can realize continuous feeding and discharging, thereby improving production efficiency. To control the proportion of polymer solids in the discharged solution within a certain range, the control process of the horizontal devolatilization kettle mainly includes the pressure of the devolatilization kettle, the temperature of the material in the devolatilization kettle, the liquid level of the devolatilization kettle, the speed of feeding and discharging, etc.

[0003] In the prior art, due to the complex stirring structure inside the horizontal equipment and the characteristics of small storage capacity, etc., the amount of material carried by stirring is large during stirring, which is affected by the stirring speed of the kettle. The traditional differential pressure and liquid level radar liquid level meter installed on the kettle body cannot accurately measure the liquid level, resulting in large fluctuations in the proportion of discharged solids. SUMMARY

[0004] The purpose of the utility model is to provide a horizontal devolatilization kettle liquid level control device to solve the problems raised in the background art.

[0005] To solve the above technical problems, the horizontal devolatilization kettle liquid level control device provided by the utility model comprises a bottom plate, a first rack is installed on one side of the top end of the bottom plate, a first motor is installed on the top end of the first rack, a material input pump is rotatably connected to the first motor, one side of the material input pump is connected to a horizontal devolatilization kettle, a liquid level control device is connected to the outer wall of the horizontal devolatilization kettle, the liquid level control device comprises a U-shaped tube connected to one side of the bottom end of the horizontal devolatilization kettle, a first filter screen is connected to the inner wall of the U-shaped tube, one end of the U-shaped tube is connected to a storage tank, a first pipeline is installed on one side of the bottom end of the storage tank, a second filter screen is connected to the inner wall of one end of the first pipeline close to the storage tank, a reflux pump is installed on the other end of the first pipeline, a second motor is rotatably connected to one side of the reflux pump, a second pipeline is connected to the other side of the reflux pump, one end of the second pipeline away from the reflux pump is fixedly connected to the horizontal devolatilization kettle, a valve is connected to the top end of the second pipeline, and a rotating shaft is rotatably connected to the valve.

[0006] Further, the other end of the U-shaped tube is connected to a liquid level storage tank, one side of the outer wall of the liquid level storage tank is connected to a liquid level meter, and a scale table is arranged on the outer wall of the liquid level meter.

[0007] Further, the bottom end of the liquid level storage tank is connected to a third pipeline, a material output pump is installed on one end of the third pipeline away from the liquid level storage tank, a third motor is rotatably connected to one side of the material output pump, and the bottom end of the third motor is fixedly connected to a second rack.

[0008] Further, the bottom end of the horizontal devolatilization kettle is provided with a support on both sides, a groove is formed in the top end outer wall of the support, the inner wall of the groove is matched with the width of the horizontal devolatilization kettle, the horizontal devolatilization kettle is connected with the support through bolts, and the bottom end of each support is provided with a supporting leg.

[0009] Further, the valve is conical in shape, a sealing gasket is connected to the side of the valve abutting the second pipeline, the sealing gasket is made of elastic material, and the valve is matched with the width of the second pipeline.

[0010] Further, the bottom end of the storage tank and the liquid level storage tank is provided with a supporting ring, and the width of the supporting ring is matched with the width of the storage tank and the liquid level storage tank, respectively.

[0011] Compared with the prior art, the horizontal devolatilization kettle has the advantages that: the pipeline between the horizontal devolatilization kettle discharge pipeline and the liquid level storage tank is arranged in a U shape, due to the special structure of the U-shaped pipeline, a certain liquid seal is formed in the pipeline during the flow of the material, the liquid seal region can not only prevent gas backflow, but also effectively buffer the change of the material flow rate, and under the combined action of vacuum and temperature, the material will change phase during the devolatilization process, and the polymer solids are gradually precipitated and deposited in the storage tank, thereby ensuring the stability of the polymer solids in the discharge. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a front structure schematic view of the horizontal devolatilization kettle liquid level control device.

[0013] Figure 2 It is a whole structure schematic view of the horizontal devolatilization kettle liquid level control device.

[0014] Figure 3 It is an internal structure schematic view of the pipeline in the horizontal devolatilization kettle liquid level control device.

[0015] Figure 4 It is a structure schematic view of the valve in the horizontal devolatilization kettle liquid level control device.

[0016] In the drawings:

[0017] 1, bottom plate; 2, first rack; 3, material input pump; 4, horizontal devolatilization kettle;

[0018] 5, liquid level control device; 501, U-shaped pipe; 502, first filter screen; 503, storage tank; 504, first pipeline; 505, second filter screen; 506, backflow pump; 507, second pipeline; 508, valve; 509, rotating shaft;

[0019] 6, liquid level storage tank; 7, liquid level meter; 8, third pipeline; 9, material output pump; 10, second rack. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figure 1 - Figure 4 The utility model provides a horizontal type devolatilization kettle liquid level control device's technical scheme:

[0022] In the embodiments of the utility model, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , including bottom plate 1, the top end one side of bottom plate 1 is installed with first gantry 2, and the top end of first gantry 2 is installed with first motor, and first motor rotation is connected with material input pump 3, and one side of material input pump 3 is connected with horizontal type devolatilization kettle 4, and the outer wall of horizontal type devolatilization kettle 4 is connected with liquid level control device 5, and liquid level control device 5 includes the U-shaped pipe 501 connected with the bottom end one side of horizontal type devolatilization kettle 4, and the inner wall of U-shaped pipe 501 is connected with first filter screen 502, and one end of U-shaped pipe 501 is connected with storage tank 503, and the bottom end one side of storage tank 503 is installed with first pipeline 504, and the inner wall of one end of first pipeline 504 close to storage tank 503 is connected with second filter screen 505, and the other end of first pipeline 504 is installed with reflux pump 506, and one side of reflux pump 506 is rotationally connected with second motor, and the other side of reflux pump 506 is connected with second pipeline 507, and one end of second pipeline 507 away from reflux pump 506 is fixedly connected with horizontal type devolatilization kettle 4, and the top end of second pipeline 507 is connected with valve 508, and valve 508 rotationally connects with rotating shaft 509.

[0023] It should be noted that: U-shaped pipe 501 due to its special geometric shape, liquid will form natural horizontal plane between the two branches of U-shaped pipe 501, the existence of horizontal plane makes the flow of liquid in U-shaped pipe 501 more stable, reduces the liquid level fluctuation caused by flow rate variation or external disturbance, in addition U-shaped pipe 501 also helps to prevent liquid backflow, and the anti-backflow function can protect the safety of equipment and system, avoids various problems caused by liquid backflow.

[0024] Participate Figure 1 , the other end of U-shaped pipe 501 is connected with liquid level storage tank 6, and the outer wall of one side of liquid level storage tank 6 is connected with liquid level meter 7, and the outer wall of liquid level meter 7 is provided with scale table.

[0025] It should be noted that when the internal of the liquid level storage tank 6 changes, the liquid level gauge 7 will change, and the workers can observe the change of these data through the liquid level gauge 7 to determine whether the feed amount of the material input pump 3 needs to be adjusted.

[0026] participate Figure 1 , Figure 2 The bottom end of the liquid level storage tank 6 is connected with the third pipeline 8, and the end of the third pipeline 8 away from the liquid level storage tank 6 is provided with the material output pump 9. The material output pump 9 is rotatably connected with the third motor on one side, and the third motor is fixedly connected with the second bracket 10 at the bottom end.

[0027] It should be noted that when the liquid in the liquid level storage tank 6 needs to enter the next process, the material output pump 9 can quickly pump out the material in the liquid level storage tank 6 and transport it to the designated destination through the pipeline.

[0028] Working principle: The material input pump 3 adopts quantitative output according to the production amount, so that the material enters the inside of the horizontal devolatilization kettle 4. At the same time, the horizontal devolatilization kettle 4 allows the liquid to enter the inside of the U-shaped pipe 501 after the devolatilization process. At the same time, because the shape of the U-shaped pipe 501 is stable, the liquid level in the kettle can be guaranteed to be stable. At the same time, the shape of the U-shaped pipe 501 also helps to reduce the contact area of the liquid and the air, thereby reducing the loss of volatile substances. In addition, the inner wall of the U-shaped pipe 501 is also connected with the first filter screen 502. When the solid objects flow into the U-shaped pipe 501, they will be filtered by the first filter screen 502 and then fall into the storage tank 503 under the action of gravity. At the same time, the side of the storage tank 503 is connected with the first pipeline 504, and the inner wall of the first pipeline 504 near the storage tank 503 is connected with the second filter screen 505. In this way, when the subsequent reflux pump 506 pumps out the liquid in the storage tank 503, the solid will not be pumped back into the inside of the horizontal devolatilization kettle 4. At the same time, the second pipeline 507 is provided with the valve 508 at the connection with the horizontal devolatilization kettle 4. The valve 508 only allows the liquid to flow in one direction. When the liquid tries to backflow, the shaft 509 will make the valve 508 rotate and automatically close to prevent the liquid from backflowing.

Claims

1. A horizontal devolatilization reactor level control device, comprising a base plate (1), characterized in that: A first frame (2) is installed on one side of the top of the base plate (1). A first motor is installed on the top of the first frame (2). The first motor is rotatably connected to a material input pump (3). A horizontal devolatilization vessel (4) is connected to one side of the material input pump (3). A liquid level control device (5) is connected to the outer wall of the horizontal devolatilization vessel (4). The liquid level control device (5) includes a U-shaped tube (501) connected to one side of the bottom of the horizontal devolatilization vessel (4). A first filter screen (502) is connected to the inner wall of the U-shaped tube (501). One end of the U-shaped tube (501) is connected to a storage tank (503). The bottom side of the storage tank (503) is connected to a first filter screen (502). A first pipe (504) is installed, and a second filter screen (505) is connected to the inner wall of one end of the first pipe (504) near the storage tank (503). A reflux pump (506) is installed at the other end of the first pipe (504). A second motor is rotatably connected to one side of the reflux pump (506). A second pipe (507) is connected to the other side of the reflux pump (506). The end of the second pipe (507) away from the reflux pump (506) is fixedly connected to the horizontal devolatilization vessel (4). A valve (508) is connected to the top of the second pipe (507). A rotating shaft (509) is rotatably connected to the valve (508).

2. The horizontal devolatilization reactor level control device as described in claim 1, characterized in that: The other end of the U-shaped tube (501) is connected to a liquid level storage tank (6), and a liquid level gauge (7) is connected to one side of the outer wall of the liquid level storage tank (6). The outer wall of the liquid level gauge (7) is equipped with a scale.

3. The horizontal devolatilization reactor level control device as described in claim 2, characterized in that: The bottom end of the liquid level storage tank (6) is connected to a third pipe (8). A material output pump (9) is installed at the end of the third pipe (8) away from the liquid level storage tank (6). A third motor is rotatably connected to one side of the material output pump (9). A second frame (10) is fixedly connected to the bottom end of the third motor.

4. The horizontal devolatilization reactor level control device as described in claim 3, characterized in that: The horizontal devolatilization vessel (4) is equipped with supports on both sides of its bottom end. The top outer wall of the support has a groove, and the inner wall of the groove is adapted to the width of the horizontal devolatilization vessel (4). The horizontal devolatilization vessel (4) is bolted to the support. The bottom ends of the two supports are equipped with legs, and each leg is fixedly connected to the bottom plate (1).

5. The horizontal devolatilization reactor level control device as described in claim 4, characterized in that: The valve (508) is conical in shape, and a sealing gasket is connected to the side of the valve (508) that abuts against the second conduit (507). The sealing gasket is made of elastic material, and the width of the valve (508) is adapted to the width of the second conduit (507).

6. The horizontal devolatilization reactor level control device as described in claim 5, characterized in that: The bottom of both the storage tank (503) and the level tank (6) are equipped with support rings, the width of which is adapted to the width of the storage tank (503) and the level tank (6).

Images