Lateral vacuum devolatilization device

Abstract

This invention provides a lateral vacuum devolatilization device, comprising a gas-liquid separation tank with a accommodating space. The top side wall of the tank has an air inlet and an exhaust outlet communicating with the accommodating space, and the bottom side wall has a drain outlet communicating with the accommodating space. The accommodating space also contains multiple partitions, which are arranged alternately and horizontally along the airflow path from the air inlet to the exhaust outlet. The air inlet is controllably connected to the devolatilization port of an extruder, and the exhaust outlet is controllably connected to the suction port of a vacuum pump. This invention improves the cleanliness of the exhaust airflow, reduces the subsequent processing load, and significantly reduces the risk of oligomers entering the subsequent vacuum pump, causing pump corrosion or blockage.

Description

Technical Field

[0001] This utility model belongs to the field of extruder design technology, specifically relating to a lateral vacuum devolatilization device. Background Technology

[0002] Existing lateral devolatilization devices typically employ a vacuum exhaust and liquid collection separation structure, with the exhaust and collection systems often arranged vertically: after the gas-liquid mixture enters the device, it is first exhausted by the top exhaust system, while the liquid is collected by gravity in the bottom collection area. This traditional structure results in a complex overall device structure and a large footprint; traditional devices also lack sufficient condensation capacity for low-volatile components, leading to low separation efficiency and difficulty in fully filtering out fine droplets and particulate matter from the gas, affecting devolatilization efficiency and exhaust cleanliness. Some volatile substances directly enter the vacuum pump, causing pump corrosion or blockage. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a lateral vacuum devolatilization device that can overcome the technical problems of existing lateral vacuum devolatilization devices, which are unable to fully filter out fine droplets and particulate matter in the gas, reduce devolatilization efficiency and exhaust cleanliness, and allow some volatile substances to directly enter the vacuum pump, leading to pump corrosion or blockage.

[0004] To address the aforementioned problems, this utility model provides a lateral vacuum devolatilization device, comprising a gas-liquid separation tank having a accommodating space. The top side wall of the gas-liquid separation tank is provided with an air inlet and an exhaust outlet communicating with the accommodating space. The bottom side wall of the gas-liquid separation tank is provided with a drain outlet communicating with the accommodating space. The accommodating space also contains multiple partitions, which are arranged alternately on the airflow path from the air inlet to the exhaust outlet. The air inlet is controllably connected to the devolatilization port of an extruder, and the exhaust outlet is controllably connected to the suction port of a vacuum pump.

[0005] In some embodiments, the location of the drain port corresponds to the location of the air inlet.

[0006] In some embodiments, a portion of each of the partitions is fixedly connected to the inner wall of the top sidewall, and another portion is fixedly connected to the inner wall of the bottom sidewall, and each partition fixedly connected to the inner wall of the bottom sidewall has a flow gap between it and the inner wall of the bottom sidewall.

[0007] In some embodiments, the lateral vacuum devolatilization device further includes an outer shell, which is cylindrical, and the gas-liquid separation tank is detachably inserted into the outer shell. The outer shell has an air inlet pipe, an exhaust pipe, and a liquid outlet pipe. The position of the air inlet pipe corresponds to the position of the air inlet, the position of the exhaust pipe corresponds to the position of the exhaust outlet, and the position of the liquid outlet pipe corresponds to the position of the liquid outlet.

[0008] In some embodiments, a first side plate is sealed to a first port of the housing, and a second side plate is sealed to a second port of the housing, wherein at least one of the first side plate and the second side plate is detachably connected to the housing.

[0009] In some embodiments, the first side plate and / or the second side plate are connected to the first port and the second port of the housing via a clamp assembly; and / or, at least one of the first side plate and the second side plate is provided with an observation window.

[0010] In some embodiments, the outer casing includes a first cylindrical section and a second cylindrical section, a first port of the first cylindrical section is connected to the first side plate, a second port of the first cylindrical section is detachably and sealed to the first port of the second cylindrical section, a second port of the second cylindrical section is connected to the second side plate, the air inlet pipe and the liquid outlet pipe are both located on the first cylindrical section, and the exhaust pipe is located on the second cylindrical section.

[0011] In some embodiments, the second port of the first cylindrical section is detachably connected to the first port of the second cylindrical section via a clamp assembly.

[0012] In some embodiments, both ends of the first cylindrical section and both ends of the second cylindrical section are provided with annular bosses that protrude radially outward, and the pipe clamp assembly is arranged around the annular bosses.

[0013] In some embodiments, the lateral vacuum devouring device further includes a support frame, the support frame including a base and a support rod on the base, the top end of the support rod being fixedly connected to the outer casing, and rollers being provided on the bottom side of the base.

[0014] This invention provides a lateral vacuum devolatilization device. The airflow inlet and outlet are respectively located at the two ends of the gas-liquid separation tank along its length. Multiple baffles, spaced horizontally and staggered vertically, are placed between them. This allows the gas-liquid mixture entering the containment space through the inlet to flow in a tortuous manner towards the exhaust port. During this flow, the gas-liquid mixture collides with the surfaces of the baffles, thereby achieving the separation of liquid components (including solid particles) in the fluid. The separated liquid components are deposited downwards along the baffles into the bottom area of ​​the containment space and can be discharged and collected into the target container through the drain port. Because the baffles tortuously limit the airflow path, the contact area and flow path between the airflow and the gas-liquid separation tank within the containment space are objectively increased. This enhances the condensation capacity of low-volatile components in the fluid, further improving the separation efficiency of the mixed fluid. This improves the cleanliness of the airflow discharged from the exhaust port, reduces the subsequent processing load, and significantly reduces the risk of oligomers entering the subsequent vacuum pump, causing pump corrosion or blockage. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the lateral vacuum devouring device in an embodiment of the present utility model;

[0016] Figure 2 yes Figure 1 A front view of the lateral vacuum devouring device in the middle;

[0017] Figure 3 yes Figure 1 A schematic diagram (longitudinal section) of the internal structure of the lateral vacuum devouring device in the diagram;

[0018] Figure 4 This is a three-dimensional structural schematic diagram of the lateral vacuum devouring device in another embodiment of the present invention.

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Gas-liquid separator body; 11. Air inlet; 12. Exhaust outlet; 13. Liquid outlet; 2. Baffle; 3. Outer shell; 301. First cylindrical section; 302. Second cylindrical section; 303. Annular boss; 31. Air inlet pipe; 32. Exhaust pipe; 33. Liquid outlet pipe; 34. First side plate; 341. Observation window; 35. Second side plate; 36. Sealing ring; 4. Pipe clamp assembly; 5. Support frame; 51. Base; 52. Support rod; 53. Roller. Detailed Implementation

[0021] See also Figures 1 to 4As shown in the figure, according to an embodiment of the present invention, a lateral vacuum devolatilization device is provided, including a gas-liquid separation tank 1. The gas-liquid separation tank 1 has a accommodating space (not indicated in the figure). An air inlet 11 and an exhaust outlet 12 communicating with the accommodating space are provided on the top side wall of the gas-liquid separation tank 1. A liquid outlet 13 communicating with the accommodating space is provided on the bottom side wall of the gas-liquid separation tank 1. A plurality of partitions 2 are also provided within the accommodating space, and the partitions 2 are arranged alternately on the left and right sides and vertically. In the airflow path from the inlet 11 to the outlet 12, it is understood that the aforementioned baffles 2 cause the gas-liquid mixture entering from the inlet 11 to flow to the outlet 12 in an S-shaped tortuous flow direction and be discharged from the accommodating space. The inlet 11 is used to controllably connect with the devolatilization port of the extruder (not shown in the figure, not indexed) (through a corresponding on / off valve), and the outlet 12 is used to controllably connect with the suction port of the vacuum pump (not shown in the figure, not indexed) (through a corresponding on / off valve).

[0022] In this technical solution, the airflow inlet and outlet are respectively located at the two ends of the gas-liquid separation tank 1 along its length, and multiple baffles 2 are set between them, spaced horizontally and staggered vertically. This allows the gas-liquid mixture entering the containment space through the air inlet 11 to flow to the exhaust port 12 in a tortuous manner. During this flow, the gas-liquid mixture collides with the surfaces of each baffle 2, thereby achieving the separation of liquid components (including solid particles) in the fluid. The separated liquid components will be deposited downwards along the baffles 2 into the bottom area of ​​the containment space and can be discharged and collected into the target container through the drain port 13. Since each baffle 2 forms a tortuous limitation on the flow path of the airflow, it objectively increases the contact area and flow tube length between the airflow and the gas-liquid separation tank 1 in the containment space, which can improve the condensation capacity of low-volatile components in the fluid, further improve the separation efficiency of the mixed fluid, thereby improving the cleanliness of the airflow discharged from the exhaust port 12, reducing the subsequent processing load, and also significantly reducing the risk of oligomers entering the subsequent vacuum pump and causing pump corrosion or blockage.

[0023] In some embodiments, the location of the drain port 13 corresponds to the location of the air inlet 11, so as to... Figure 3 The orientation shown is for reference, that is, both the air inlet 11 and the liquid outlet 13 are located in the left side area of ​​the gas-liquid separator 1. This facilitates the rapid and efficient discharge of the separated liquid components and prevents the high-speed airflow from entraining the liquid components at the separation point.

[0024] In some embodiments, a portion of each of the partitions 2 is fixedly connected to the inner wall of the top side wall, and another portion is fixedly connected to the inner wall of the bottom side wall. Each partition 2 fixedly connected to the inner wall of the bottom side wall has a flow gap (not shown in the figure) between it and the inner wall of the bottom side wall. The aforementioned flow gap can be composed of multiple flow holes or can be a flow slit.

[0025] In this technical solution, by setting a flow gap between each partition 2 and the inner wall of the bottom side wall, the liquid components separated by each partition 2 on the downstream side can flow to the aforementioned drain port 13 in a timely manner for discharge.

[0026] In some embodiments, the lateral vacuum devolatilization device further includes an outer shell 3, which is cylindrical. The gas-liquid separation tank 1 is detachably inserted into the outer shell 3. In this case, it can be understood that the aforementioned gas-liquid separation tank 1 objectively forms an inner liner structure. The outer shell 3 has an air inlet pipe 31, an exhaust pipe 32, and a liquid drain pipe 33. The position of the air inlet pipe 31 corresponds to the position of the air inlet 11, the position of the exhaust pipe 32 corresponds to the position of the exhaust outlet 12, and the position of the liquid drain pipe 33 corresponds to the position of the liquid drain outlet 13.

[0027] In this technical solution, the gas-liquid separation tank 1 is detachably inserted into the outer shell 3 as an inner liner. When maintenance of the gas-liquid separation tank 1 is required, the gas-liquid separation tank 1 can be removed from the outer shell 3 and replaced with a new gas-liquid separation tank 1 inserted into the outer shell 3, which greatly reduces the maintenance time of the gas-liquid separation tank 1 and improves the work efficiency.

[0028] See details Figure 3 As shown, in some embodiments, the first port of the outer casing 3 is sealed to a first side plate 34 and the second port is sealed to a second side plate 35, and at least one of the first side plate 34 and the second side plate 35 is detachably connected to the outer casing 3.

[0029] In this technical solution, the gas-liquid separation tank 1 inside the outer shell 3 can be quickly unloaded and assembled by the first side plate 34 or the second side plate 35 which are detachably connected to the two side ports of the outer shell 3, making the operation very convenient.

[0030] An observation window 341 is provided on at least one of the first side plate 34 and the second side plate 35. The observation window 341 can also be a glass window, so as to allow real-time observation of the liquid collection state in the gas-liquid separation tank 1 inside the outer shell 3, which is conducive to the replacement of the gas-liquid separation tank 1.

[0031] In some embodiments, the outer casing 3 includes a first cylindrical section 301 and a second cylindrical section 302. The first port of the first cylindrical section 301 is connected to the first side plate 34. The second port of the first cylindrical section 301 and the first port of the second cylindrical section 302 are detachably and sealed together. The second port of the second cylindrical section 302 is connected to the second side plate 35. The air inlet pipe 31 and the liquid outlet pipe 33 are both located on the first cylindrical section 301, and the exhaust pipe 32 is located on the second cylindrical section 302.

[0032] In this technical solution, by splitting the outer shell 3 into a first cylindrical section 301 and a second cylindrical section 302 that can be assembled, the modular assembly design of the device is realized, which enables the lateral vacuum devouring device in this utility model to meet different space requirements.

[0033] In one specific embodiment, the second port of the first cylindrical section 301 and the first port of the second cylindrical section 302 are detachably connected by a pipe clamp assembly 4. The first side plate 34 and / or the second side plate 35 are connected to the first port and the second port of the outer shell 3 via the pipe clamp assembly 4. In specific applications, corresponding sealing rings 36 are provided between the first cylindrical section 301 and the second cylindrical section 302, and at the connection positions of the first side plate 34 and the second side plate 35 with the outer shell 3 to ensure the sealing of the pipe clamp connection positions.

[0034] In order to improve the connection reliability between the first cylindrical section 301, the second cylindrical section 302, the first side plate 34, and the second side plate 35, both ends of the first cylindrical section 301 and both ends of the second cylindrical section 302 are provided with annular bosses 303 that protrude radially outward, and the pipe clamp assembly 4 is arranged around the annular bosses 303.

[0035] See details Figure 4 As shown, in some embodiments, the lateral vacuum devouring device further includes a support frame 5, which includes a base 51 and a support rod 52 on the base 51. The top end of the support rod 52 is fixedly connected to the outer shell 3, and a roller 53 is provided on the bottom side of the base 51 to ensure the structural reliability and stability of the lateral vacuum devouring device and facilitate the convenient assembly of the whole device with the extruder.

[0036] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A lateral vacuum devouring device, characterized in that, The system includes a gas-liquid separation tank (1), which has a accommodating space. The top side wall of the gas-liquid separation tank (1) is provided with an air inlet (11) and an exhaust outlet (12) communicating with the accommodating space. The bottom side wall of the gas-liquid separation tank (1) is provided with a liquid outlet (13) communicating with the accommodating space. The accommodating space is also provided with multiple partitions (2). Each partition (2) is arranged horizontally and vertically alternately on the airflow path from the air inlet (11) to the exhaust outlet (12). The air inlet (11) is used to controllably communicate with the devolatilization port of the extruder, and the exhaust outlet (12) is used to controllably communicate with the suction port of the vacuum pump.

2. The lateral vacuum devouring device according to claim 1, characterized in that, The location of the drain port (13) corresponds to the location of the air inlet (11).

3. The lateral vacuum devouring device according to claim 1, characterized in that, A portion of each of the partitions (2) is fixedly connected to the inner wall of the top side wall, and another portion is fixedly connected to the inner wall of the bottom side wall. Each partition (2) fixedly connected to the inner wall of the bottom side wall has a flow gap between it and the inner wall of the bottom side wall.

4. The lateral vacuum devouring device according to claim 1, characterized in that, It also includes an outer shell (3), which is cylindrical. The gas-liquid separation tank (1) is detachably inserted into the outer shell (3). The outer shell (3) has an air inlet pipe (31), an exhaust pipe (32), and a liquid drain pipe (33). The position of the air inlet pipe (31) corresponds to the position of the air inlet (11), the position of the exhaust pipe (32) corresponds to the position of the exhaust outlet (12), and the position of the liquid drain pipe (33) corresponds to the position of the liquid drain outlet (13).

5. The lateral vacuum devouring device according to claim 4, characterized in that, The first port of the outer casing (3) is sealed with a first side plate (34), and the second port is sealed with a second side plate (35). At least one of the first side plate (34) and the second side plate (35) is detachably connected to the outer casing (3).

6. The lateral vacuum devouring device according to claim 5, characterized in that, The first side plate (34) and / or the second side plate (35) are connected to the first port and the second port of the outer casing (3) via a clamp assembly (4); and / or, at least one of the first side plate (34) and the second side plate (35) is provided with an observation window (341).

7. The lateral vacuum devouring device according to claim 5, characterized in that, The outer casing (3) includes a first cylindrical section (301) and a second cylindrical section (302). The first port of the first cylindrical section (301) is connected to the first side plate (34). The second port of the first cylindrical section (301) and the first port of the second cylindrical section (302) are detachably sealed together. The second port of the second cylindrical section (302) is connected to the second side plate (35). The air inlet pipe (31) and the liquid outlet pipe (33) are both located on the first cylindrical section (301), and the exhaust pipe (32) is located on the second cylindrical section (302).

8. The lateral vacuum devouring device according to claim 7, characterized in that, The second port of the first cylindrical section (301) and the first port of the second cylindrical section (302) are detachably connected by a pipe clamp assembly (4).

9. The lateral vacuum devouring device according to claim 8, characterized in that, Both ends of the first cylindrical section (301) and both ends of the second cylindrical section (302) are provided with annular bosses (303) that protrude outward along their radial direction, and the pipe clamp assembly (4) is arranged around the annular bosses (303).

10. The lateral vacuum devouring device according to claim 4, characterized in that, It also includes a support frame (5), which includes a base (51) and a support rod (52) on the base (51). The top end of the support rod (52) is fixedly connected to the outer shell (3), and a roller (53) is provided on the bottom side of the base (51).

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