Maleic anhydride hydrolysis apparatus with convenient sampler

Abstract

The utility model relates to a field of chemical equipment, concretely relates to maleic anhydride hydrolytic device with convenient sampler, including main part, upper head, lower head and sampler, the upper head and lower head set up respectively in both ends of main part, be equipped with first flange mouth on the upper head, be equipped with valve on the first flange mouth, the other end of valve is connected with sampler, the bottom of sampler is equipped with connecting flange mouth, is equipped with rotating assembly on outer wall, is equipped with reel inside, rotating assembly rotation can drive reel rotation, the reel is twisted with rope, the end of rope is connected with sampling bottle, the bottom of sampler is seted up opening. Use maleic anhydride hydrolytic device with convenient sampler provided by the application, only need to set up the length of rope in advance, can accurate sampling, will not have the risk of sampling bottle to mix, also will not have sampling bottle to take the situation of sample, in the sampling process, by opening and closing valve, can avoid acid gas overflow in main part, prevent pollution environment, stimulate sampling staff.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment, specifically to a maleic anhydride hydrolysis device with a convenient sampler. Background Technology

[0002] Maleic acid is an important chemical raw material, with applications mainly including the synthesis of excluding polyester resins, pesticide and pharmaceutical synthesis, and food additives. Industrially, it is typically prepared by the hydrolysis of maleic anhydride.

[0003] Because the hydrolysis of maleic anhydride requires controlled hydrolysis conditions (time and temperature) to prevent maleic acid from isoforming into fumaric acid, sampling is necessary in the hydrolysis device for monitoring. Current sampling methods involve opening a pre-designated sampling port and hoisting the sample. However, this method presents two problems: 1. The descent depth of the sampling bottle is difficult to control; too deep and it will touch the agitator, too shallow and it won't reach the reaction liquid, both leading to sampling failure; 2. Acid gas will escape from the reaction device, polluting the environment and irritating sampling personnel. Therefore, a convenient sampling device with protective features is needed. Utility Model Content

[0004] To overcome the inconvenience of sampling in existing reactors, the leakage of acid gas during sampling, which pollutes the environment and irritates workers, a maleic anhydride hydrolysis device with a protective and convenient sampler is needed.

[0005] In view of this, the present invention provides a maleic anhydride hydrolysis device with a convenient sampler, comprising a main body, an upper end cap, a lower end cap, and a sampler. The upper end cap and the lower end cap are respectively disposed at both ends of the main body. The upper end cap is provided with a first flange, and a valve is installed on the first flange. The other end of the valve is connected to the sampler. The bottom of the sampler is provided with a connecting flange, and a rotating assembly is provided on the outer wall. A winding wheel is provided inside. The rotation of the rotating assembly can drive the winding wheel to rotate. A rope is wound on the winding wheel, and the end of the rope is connected to a sampling bottle. An opening is provided at the bottom of the sampler.

[0006] Preferably, the rotating assembly includes a turntable and a first magnet disposed on the turntable, and a second magnet is disposed on the wheel near the rotating assembly on the winding wheel.

[0007] Preferably, the upper end cap is further provided with a second flange, a third flange, a fourth flange and a fifth flange. The second flange is used to connect the maleic anhydride feed pipe, the third flange is used to connect the water feed pipe, the fourth flange is used to install the condenser, and the fifth flange is used to install the temperature detection device.

[0008] Preferably, the upper end cap is equipped with a stirrer and a motor, which are rotatably connected.

[0009] Preferably, the lower end cap is provided with a discharge port for discharging the reaction liquid inside the main body.

[0010] Preferably, the rotating assembly is also provided with a handle.

[0011] Preferably, a first rotating shaft is provided on the first side wall of the mounting rotating assembly, a second rotating shaft is provided on each of the two discs of the winding wheel, and a rotating seat is provided on the inner wall of the outer casing near the second rotating shaft.

[0012] Preferably, the housing is further provided with a positioning component, which includes a support rod and a limiting block.

[0013] Preferably, the support rod is fixed to the inner wall of the outer shell, the limiting block is fixed to the support rod, the limiting block is provided with a through hole through which a rope can pass, and the center of the through hole and the center of the opening on the limiting block are on the same vertical line.

[0014] Preferably, one sidewall of the outer casing is made of glass.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a maleic anhydride hydrolysis device with a convenient sampler, including a main body, an upper end cap, a lower end cap, and a sampler. The upper end cap and the lower end cap are respectively disposed at both ends of the main body. The upper end cap has a first flange, on which a valve is installed. The other end of the valve is connected to the sampler. The bottom of the sampler has a connecting flange, and a rotating assembly is provided on the outer wall. A winding wheel is provided inside. The rotation of the rotating assembly can drive the winding wheel to rotate. A rope is wound on the winding wheel, and the end of the rope is connected to a sampling bottle. The bottom of the sampler is open. The device features an opening. During sampling, the rope length is pre-set based on the liquid level inside the sampling body and the position of the sampler. When sampling is needed, the valve is opened, and the rotating assembly rotates the winding wheel, releasing the rope. Under gravity, the sampling bottle falls, passing sequentially through the connecting flange, valve, and first flange into the main body for sampling. After obtaining the sample, the rotating assembly is rotated in the opposite direction to tighten the rope on the winding wheel, causing the positioning assembly to rise. When the positioning assembly is lifted out of the valve, the valve is closed to prevent acid gas from escaping from the main body. The positioning assembly is then removed from the sampler, completing the sampling process. Using the maleic anhydride hydrolysis device with a convenient sampler provided by this invention, precise sampling is achieved simply by pre-setting the rope length. There is no risk of the sampling bottle encountering the agitator, nor is there a situation where the sample bottle cannot be retrieved. During the sampling process, opening and closing the valve prevents acid gas from escaping from the main body, thus preventing environmental pollution and irritation to sampling personnel.

[0016] Furthermore, the design of this utility model, which uses magnetic transmission for the rotating component and winding wheel, avoids openings in the outer casing, further preventing acid gas leakage. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a front view of the maleic anhydride hydrolysis device with a convenient sampler in an embodiment of this utility model; Figure 2 yes Figure 1 3D schematic diagram of the sampler; Figure 3 yes Figure 1 Internal diagram of the sampler; Figure 4 yes Figure 1 Schematic diagram of internal components of the sampler; Figure 5 This is a three-dimensional schematic diagram of the sampler in another embodiment.

[0019] The component names and their numbers in the diagram are as follows: 100. Maleic anhydride hydrolysis device with a convenient sampler; 1. Upper end cap; 11. First flange; 111. Valve; 12. Second flange; 13. Third flange; 14. Fourth flange; 15. Fifth flange. 2. Main body; 3. Lower end cap; 31. Discharge port; 4. Sampler; 41. Outer shell; 411. Fixed cap; 412. First side wall; 4121. First rotating shaft; 4122. Viewing window; 413. Rotating seat; 414. Opening; 42. Connecting flange; 43. Rotating assembly; 431. Turntable; 432. First magnet; 433. Handle; 44. Winding wheel; 441. Second magnet; 442. Second rotating shaft; 45. Positioning assembly; 451. Support rod; 452. Limiting block; 46. Rope; 47. Sampling bottle; 5. Stirring; 6. Motor. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, a particular feature, structure, or characteristic may be combined in any suitable manner.

[0025] Referring to the diagram showing end cap 1 to sampler 4, this invention provides a maleic anhydride hydrolysis device 100 with a convenient sampler, comprising a main body 2, an upper end cap 1, a lower end cap 3, and a sampler 4. The upper end cap 1 and the lower end cap 3 are respectively located at both ends of the main body 2. The upper end cap 1 has a first flange 11, on which a valve 111 is installed. The other end of the valve 111 is connected to the sampler 4. The bottom of the sampler 4 has a connecting flange 42. A rotating assembly 43 is provided on the outer wall of the sampler 4. A winding wheel 44 is provided inside the sampler 4, and a rope 46 is wound on the winding wheel 44. The end of the rope 46 is connected to a sampling bottle 47. An opening 414 is provided at the bottom of the sampler 4. The sampling bottle is preferably made of glass, and its wall thickness and size are sufficient to allow it to sink into the reaction vessel containing the reaction liquid even when there is no liquid inside.

[0026] The maleic anhydride hydrolysis device 100 with a convenient sampler provided by this utility model first designs the length of the rope 46 according to the liquid level in the main body 2 and the position of the sampler 4. When sampling is required, the valve 111 is opened, and the rotating component 43 is rotated to drive the winding wheel 44 to rotate, so that the rope 46 wound on the winding wheel 44 is released. Under the action of gravity, the sampling bottle 47 falls and falls into the main body 2 in sequence through the connecting flange port 42, the valve 111 and the first flange port 11 for sampling. After the sample is obtained, the rotating component 43 is rotated in the opposite direction to tighten the rope 46 wound on the winding wheel 44, which drives the positioning component 45 to rise. When the positioning component 45 is lifted out of the valve 111, the valve 111 is closed to prevent acid gas from overflowing from the main body 2. Then the positioning component 45 is taken out from the sampler 4, and the sampling is completed. Using the maleic anhydride hydrolysis device 100 with a convenient sampler provided by the present invention, it is only necessary to pre-set the length of the rope 46 to accurately sample without the risk of the sampling bottle encountering the stirrer or the situation where the sampling bottle cannot collect the sample. During the sampling process, by opening and closing the valve 111, acid gas can be prevented from overflowing from the main body 2, thus preventing environmental pollution and irritation to the sampling personnel.

[0027] In some embodiments, specifically, the sampler 4 includes a housing 41, a connecting flange 42, and a rotating assembly 43. The housing 41 includes a top housing 41 and a first sidewall 412 located on the sidewall. The fixed cover 411 can be opened to facilitate the removal and placement of the sampling bottle 47. The first sidewall 412 is provided with a first rotating shaft 4121 and the rotating assembly 43, and the rotating assembly 43 can rotate around the first rotating shaft 4121. The sampler 4 has a winding wheel 44 and a sampling bottle 47 inside. The winding wheel 44 is shaped like an H-beam, and each of the two discs of the winding wheel 44 is provided with a second rotating shaft 442. On the inner wall of the housing 41, near the second rotating shaft 442, a rotating seat 413 is provided. The second rotating shaft 442 can be installed in the rotating seat 413 and can rotate.

[0028] Referring further to Figures 2 (body 2) and 4 (sampler 4), in some embodiments, the rotating assembly 43 includes a turntable 431 and a first magnet 432 disposed on the turntable 431. A second magnet 441 is disposed on the winding wheel 44 near the rotating assembly 43. When the rotating assembly 43 rotates, the turntable 431 on the rotating assembly 43 drives the second magnet 441 to move, thereby driving the winding wheel 44 to rotate. The second magnet 441 and the first magnet 432 are made of magnetic materials, allowing for transmission without contact, avoiding the need for openings in the housing 41, and further preventing acid gas from escaping from the body 2 during sampling.

[0029] In some embodiments, the upper head 1 is further provided with a second flange 12, a third flange 13, a fourth flange 14, and a fifth flange 15. The second flange 12 is used to connect to the maleic anhydride feed pipe, the third flange 13 is used to connect to the water feed pipe, the fourth flange 14 is used to install a condenser, and the fifth flange 15 is used to install a temperature detection device. The upper head 1 is also equipped with a stirrer 5 and a motor 6, which are rotatably connected. The lower head 3 is provided with a discharge port 31 for discharging the reaction liquid from the main body 2.

[0030] In some embodiments, the rotating assembly 43 is further provided with a handle 433, which can be used to conveniently control the rotation of the rotating assembly 43.

[0031] Referring further to sampler 4 in Figure 4, in some embodiments, a positioning component 45 is also provided inside the housing 41. The positioning component 45 includes a support rod 451 and a limiting block 452. The support rod 451 is fixed to the inner wall of the housing 41, and the limiting block 452 is fixed to the support rod 451. The limiting block 452 has a through hole for the rope 46 to pass through. The center of the through hole on the limiting block 452 and the center of the opening 414 are on the same vertical line. This arrangement ensures that when the sampling bottle 47 descends, it can accurately pass through the opening 414 and enter the valve 111, without falling to the bottom of the housing 41 and affecting the sampling operation.

[0032] In some embodiments, one sidewall of the housing 41 is made of a transparent material, such as glass or corrosion-resistant transparent plastic, so that the position of the sampling bottle 47 inside the housing 41 can be observed during sampling, which facilitates operation.

[0033] Referring to Figure 5, in some embodiments, a viewing window 4122 is provided on the first sidewall 412 where the rotating assembly 43 is located. The viewing window 4122 can be opened, allowing the sampling bottle 47 to be placed or removed. The viewing window 4122 is preferably made of glass, allowing observation of the position of the sampling bottle 47.

[0034] In some embodiments, a limiting device is also provided on the first sidewall 412 where the rotating assembly 43 is installed, which can limit the rotation of the rotating assembly 43 when sampling is not required.

[0035] The maleic anhydride hydrolysis device 100 with a convenient sampler provided by this utility model has a winding wheel 44 inside the outer shell 41, and a rotating assembly 43 is provided on the outer shell 41. A second magnet 441 and a turntable 431 with magnetic properties are respectively provided on the winding wheel 44 and the rotating assembly 43. The rotating assembly 43 can be rotated to drive the winding wheel 44 to rotate without the winding wheel 44 and the rotating assembly 43 being in contact. The rope 46 wound on the winding wheel 44 is connected to the sampling bottle 47. This design prevents acid gas from escaping during sampling.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A maleic anhydride hydrolysis device with a convenient sampler, characterized in that: The sampler includes a main body (2), an upper end cap (1), a lower end cap (3), and a sampler (4). The upper end cap (1) and the lower end cap (3) are respectively located at both ends of the main body (2). The upper end cap (1) is provided with a first flange (11), and a valve (111) is installed on the first flange (11). The other end of the valve (111) is connected to the sampler (4). The bottom of the sampler (4) is provided with a connecting flange (42). A rotating assembly (43) is provided on the outer wall, and a winding wheel (44) is provided inside. The rotation of the rotating assembly (43) can drive the winding wheel (44) to rotate. A rope (46) is wound on the winding wheel (44), and the end of the rope (46) is connected to a sampling bottle (47). An opening (414) is provided at the bottom of the sampler (4).

2. The maleic anhydride hydrolysis device with a convenient sampler according to claim 1, characterized in that: The rotating assembly (43) includes a turntable (431) and a first magnet (432) disposed on the turntable (431), and a second magnet (441) is disposed on the wheel (44) near the rotating assembly (43).

3. The maleic anhydride hydrolysis device with a convenient sampler according to claim 1, characterized in that: The upper end cap (1) is also provided with a second flange (12), a third flange (13), a fourth flange (14) and a fifth flange (15). The second flange (12) is used to connect the maleic anhydride feed pipe, the third flange (13) is used to connect the water feed pipe, the fourth flange (14) is used to install the condenser, and the fifth flange (15) is used to install the temperature detection device.

4. The maleic anhydride hydrolysis device with a convenient sampler according to claim 1, characterized in that: The upper end cap (1) is equipped with a stirring (5) and a motor (6), which are rotatably connected.

5. The maleic anhydride hydrolysis device with a convenient sampler according to claim 1, characterized in that: The lower end cap (3) is provided with a discharge port (31) for discharging the reaction liquid inside the main body (2).

6. The maleic anhydride hydrolysis device with a convenient sampler according to claim 2, characterized in that: The rotating assembly (43) is also provided with a handle (433).

7. The maleic anhydride hydrolysis device with a convenient sampler according to claim 2, characterized in that: The first sidewall (412) of the mounting rotating assembly (43) is provided with a first rotating shaft (4121), and the two discs of the winding wheel (44) are provided with a second rotating shaft (442). The inner wall of the outer shell (41) is provided with a rotating seat (413) near the second rotating shaft (442).

8. The maleic anhydride hydrolysis device with a convenient sampler according to claim 2, characterized in that: The housing (41) is also provided with a positioning component (45), which includes a support rod (451) and a limiting block (452).

9. The maleic anhydride hydrolysis device with a convenient sampler according to claim 8, characterized in that: The support rod (451) is fixed on the inner wall of the outer shell (41), and the limiting block (452) is fixed on the support rod (451). The limiting block (452) has a through hole through which a rope (46) can pass. The center of the through hole and the center of the opening (414) on the limiting block (452) are on the same vertical line.

10. The maleic anhydride hydrolysis apparatus with a convenient sampler according to any one of claims 1 to 9, characterized in that: One sidewall of the outer casing (41) is made of glass.

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