Preparation device of methyl pyrrolidone

Abstract

The utility model discloses a preparation device of methyl pyrrolidone, which relates to the technical field of methyl pyrrolidone, and comprises a reaction kettle, the bottom of the reaction kettle is provided with a base, the inner side of the base is provided with a bottom plate, the top of the bottom plate is provided with a spring frame, and the top of the spring frame is connected with a placing block. An alarm is mounted at the top of the bottom plate, and a threaded hole is formed in the front face of the placement block. According to the methyl pyrrolidone production device, raw materials react through a catalyst and are placed into the reaction kettle through the feeding opening to react with the catalyst, methyl pyrrolidone is produced, then the discharging opening is opened by personnel, methyl pyrrolidone enters the storage box through the discharging opening, and when methyl pyrrolidone enters the storage box, the overall weight of the storage box is increased; and a spring frame at the bottom slowly descends, and when a proper amount of methyl pyrrolidone is stored in the storage box, a connecting rod at the bottom of a placement block can touch an alarm, so that a worker is warned, and the worker does not need to watch the discharge of the methyl pyrrolidone all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of methyl pyrrolidone, in particular to a preparation device of methyl pyrrolidone. Background Art

[0002] The reactor is the core equipment for the production of methylpyrrolidone. The reactor is generally made of stainless steel and has the characteristics of high temperature, high pressure, corrosion resistance, etc. In the reactor, the raw materials enter the reactor through proper control and react with the catalyst to produce methylpyrrolidone.

[0003] The existing methyl pyrrolidone preparation device needs to discharge it through the discharge port at the bottom of the reactor after the preparation is completed. During the discharge process, personnel need to watch at all times to avoid material overflow, which wastes personnel's time and is extremely inconvenient. Utility Model Content

[0004] The utility model aims to solve the problems of the existing methyl pyrrolidone preparation device, which needs to be discharged through a discharge port at the bottom of a reaction kettle after the preparation is completed, and personnel need to watch the discharge process all the time to avoid material overflow, which wastes personnel's time and is extremely inconvenient. A methyl pyrrolidone preparation device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for preparing methyl pyrrolidone comprises a reactor, wherein a base is installed at the bottom of the reactor, and a bottom plate is installed on the inner side of the base, a spring frame is installed on the top of the bottom plate, and a placement block is connected to the top of the spring frame, an alarm is installed on the top of the bottom plate, a threaded hole is opened on the front of the placement block, and a fixing bolt is installed inside the threaded hole, a storage box is placed inside the placement block, and a fixing block is installed at the bottom of the storage box, a connecting rod is installed at the bottom of the placement block, a feed inlet is installed on the top of the reactor, and a discharge port is installed at the bottom of the reactor.

[0007] Preferably, the placement block forms a lifting structure with a bottom plate through a spring frame, and the bottom plate is fixedly connected to the base.

[0008] Preferably, the fixing block forms a disassembly structure with the placement block through fixing bolts, and the fixing block forms an integrated structure with the storage box through welding.

[0009] Preferably, the fixing bolt is threadedly connected to the fixing block, and the outer diameter of the fixing bolt is consistent with the inner diameter of the threaded hole.

[0010] Preferably, the placement block is parallel to the bottom plate.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the raw materials are reacted with the catalyst and placed into the reactor through the feed port to react with the catalyst to produce methylpyrrolidone. Then the discharge port is opened by a person, so that the methylpyrrolidone enters the storage box through the discharge port. When entering, the overall weight of the storage box will increase, and then it will slowly descend through the spring frame at the bottom. When the storage box contains a proper amount of methylpyrrolidone, the connecting rod at the bottom of the placement block will touch the alarm, thereby alerting the staff, and there is no need for the staff to watch the discharge of methylpyrrolidone all the time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front structure of the utility model;

[0014] Figure 2 This is a front cross-sectional structural diagram of a storage box in the utility model;

[0015] Figure 3 For the utility model Figure 2 A is an enlarged structural diagram of FIG.

[0016] Legend:

[0017] 1. Reactor; 2. Base; 3. Feed inlet; 4. Discharge outlet; 5. Bottom plate; 6. Spring rack; 7. Placement block; 8. Alarm; 9. Storage box; 10. Fixing block; 11. Threaded hole; 12. Fixing bolt; 13. Connecting rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figure 1-3A preparation device for methyl pyrrolidone comprises a reactor 1, a base 2, a feed port 3, a discharge port 4, a bottom plate 5, a spring frame 6, a placement block 7, an alarm 8, a storage box 9, a fixing block 10, a threaded hole 11, a fixing bolt 12 and a connecting rod 13. The bottom of the reactor 1 is provided with a base 2, and the inner side of the base 2 is provided with a bottom plate 5, the top of the bottom plate 5 is provided with a spring frame 6, and the top of the spring frame 6 is connected with the placement block 7, the top of the bottom plate 5 is provided with an alarm 8, the front of the placement block 7 is provided with a threaded hole 11, and the inside of the threaded hole 11 is provided with a fixing bolt 12, the inside of the placement block 7 is provided with a storage box 9, and the bottom of the storage box 9 is provided with a fixing block 10, the bottom of the placement block 7 is provided with a connecting rod 13, the feed port 3 is provided with the top of the reactor 1, and the discharge port 4 is provided with the bottom of the reactor 1.

[0020] Furthermore, the placement block 7 forms a lifting structure with the bottom plate 5 through the spring frame 6, and the bottom plate 5 is fixedly connected to the base 2. The discharge port 4 is opened to allow methyl pyrrolidone to enter the storage box 9 through the discharge port 4. When entering, the overall weight of the storage box 9 will increase, thereby slowly descending through the spring frame 6 at the bottom.

[0021] Furthermore, the fixed block 10 forms a disassembly structure with the placement block 7 through the fixing bolts 12, and the fixed block 10 forms an integrated structure with the storage box 9 through welding. The fixing bolts 12 are removed from the placement block 7. After removal, the storage box 9 is lifted upward to take out the storage box 9 and process the methyl pyrrolidone inside.

[0022] Furthermore, the fixing bolt 12 is threadedly connected to the fixing block 10 , and the outer diameter of the fixing bolt 12 is consistent with the inner diameter of the threaded hole 11 , so that the fixing bolt 12 can fix the storage box 9 .

[0023] Furthermore, the placement block 7 is parallel to the bottom plate 5 , and the placement block 7 can be raised and lowered on the bottom plate 5 by the spring frame 6 .

[0024] Working principle: When in use, personnel first place the raw materials into the reactor 1 through the feed port 3 for reaction through the catalyst, react with the catalyst to produce methylpyrrolidone, and then open the discharge port 4 to allow the methylpyrrolidone to enter the storage box 9 through the discharge port 4. When entering, the overall weight of the storage box 9 will increase, and then it will slowly descend through the spring frame 6 at the bottom. When the storage box 9 contains an appropriate amount of methylpyrrolidone, the connecting rod 13 at the bottom of the placement block 7 will touch the alarm 8, thereby alerting the staff, who will then close the discharge port 4 and remove the fixing bolt 12 from the placement block 7. After removal, lift the storage box 9 upward to take out the storage box 9 and process the methylpyrrolidone inside.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preparing methyl pyrrolidone, comprising a reaction kettle (1), characterized in that: The bottom of the reactor (1) is provided with a base (2), and a bottom plate (5) is provided on the inner side of the base (2); a spring frame (6) is provided on the top of the bottom plate (5), and a placement block (7) is connected to the top of the spring frame (6); an alarm (8) is provided on the top of the bottom plate (5); a threaded hole (11) is provided on the front of the placement block (7), and a fixing bolt (12) is provided inside the threaded hole (11); a storage box (9) is provided inside the placement block (7), and a fixing block (10) is provided at the bottom of the storage box (9); a connecting rod (13) is provided at the bottom of the placement block (7); a feed port (3) is provided on the top of the reactor (1), and a discharge port (4) is provided at the bottom of the reactor (1).

2. The device for preparing methyl pyrrolidone according to claim 1, characterized in that: The placement block (7) forms a lifting structure with the bottom plate (5) through the spring frame (6), and the bottom plate (5) is fixedly connected to the base (2).

3. The device for preparing methyl pyrrolidone according to claim 1, characterized in that: The fixing block (10) forms a disassembly structure with the placement block (7) through the fixing bolts (12), and the fixing block (10) forms an integrated structure with the storage box (9) through welding.

4. The device for preparing methyl pyrrolidone according to claim 1, characterized in that: The fixing bolt (12) is threadedly connected to the fixing block (10), and the outer diameter of the fixing bolt (12) is consistent with the inner diameter of the threaded hole (11).

5. The device for preparing methyl pyrrolidone according to claim 1, characterized in that: The placement block (7) is parallel to the bottom plate (5).

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