Pressure relief device of hydrolysis reaction kettle

Abstract

The utility model discloses a pressure relief device of a hydrolysis reaction kettle, and relates to the technical field of hydrolysis reaction kettles. The hydrolysis reaction kettle comprises a hydrolysis reaction kettle body, a pressure relief pipe is fixedly connected to the top of the hydrolysis reaction kettle body, a pressure relief branch pipe is fixedly arranged on the side wall of the pressure relief pipe, a connecting cover is screwed to the top of the pressure relief pipe in a threaded mode, a vertical rod is movably connected to the middle of the connecting cover in a penetrating mode, and a limiting plate is fixedly arranged at the upper end of the vertical rod. The lower ends of the vertical rods are in threaded connection with lower circular plates. The connecting cover is screwed down from the upper end of the pressure relief pipe, the vertical rod, the sealing plunger and the lower circular plate can be taken out from the interior of the pressure relief pipe together, then the screw is screwed out of the threaded hole, the lower circular plate is detached from the lower end of the vertical rod, and the sealing plunger can be taken down from the vertical rod. And the limiting end cover is manually screwed off from the end of the purification branch pipe, so that the filter cartridge can be taken out from the purification branch pipe to be cleaned or replaced, and the operation is convenient and fast.

Description

Technical Field

[0001] This utility model belongs to the field of hydrolysis reactor technology, and in particular relates to a pressure relief device for a hydrolysis reactor. Background Technology

[0002] Mandelic acid, also known as amygdalin, is a white, rhombic, flaky crystal. It is a lipophilic fruit acid with high skin affinity and strong permeability, and its effects are milder than glycolic acid. Due to its antibiotic-like chemical structure, it can inhibit the growth of various bacteria and has a wide range of applications in the pharmaceutical field. During prolonged heating and cooling of mandelic acid in a hydrolysis reactor, a large amount of gas accumulates inside. Over time, the increased gas pressure inside the reactor can lead to explosions. A patent application with application number 202320376491.4 discloses a pressure relief device for a hydrolysis reactor, including a hydrolysis reactor; a recovery and treatment tank fixedly connected to the top of the hydrolysis reactor; a gas guide pipe fixedly connected to the top of the hydrolysis reactor, with the other end of the gas guide pipe fixedly connected to the top of the recovery and treatment tank; a support plate fixedly connected to the inner wall of the recovery and treatment tank; and a spiral blade fixedly connected to the end of the guide rod.

[0003] However, during actual use, the applicant found that the gas accumulated inside the hydrolysis reactor would move upward along the spiral blades and push the first sealing plate upward, causing the first sealing plate to press tightly against the second sealing plate, making the first sealing plate unable to rotate smoothly. As a result, the gas could not smoothly pass through the first and second gas inlets to enter the gas pipe to complete the pressure relief. In view of this, we propose a pressure relief device for a hydrolysis reactor. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a pressure relief device for a hydrolysis reactor, comprising a hydrolysis reactor body, a pressure relief pipe fixedly connected to the top of the hydrolysis reactor body, a pressure relief branch pipe fixedly installed on the side wall of the pressure relief pipe, a connecting cap threadedly connected to the top of the pressure relief pipe, a vertical rod movably connected through the middle of the connecting cap, a limit plate fixedly installed at the upper end of the vertical rod, a lower circular plate threadedly connected to the lower end of the vertical rod, an abutment circular plate movably sleeved on the vertical rod above the lower circular plate, a sealing plunger sleeved on the vertical rod between the abutment circular plate and the lower circular plate, a spring sleeved on the vertical rod between the abutment circular plate and the connecting cap, a purification branch pipe fixedly installed at the end of the pressure relief branch pipe away from the pressure relief pipe, a filter cylinder placed inside the purification branch pipe, and a limit end cap threadedly screwed onto the end of the purification branch pipe away from the pressure relief branch pipe.

[0006] Preferably, a screw is fixedly provided on the top of the lower circular plate, a threaded hole is provided at the lower end of the vertical rod, the screw is threadedly engaged with the threaded hole, and an internal hexagonal groove is provided at the bottom of the lower circular plate.

[0007] Preferably, the diameters of both the abutting circular plate and the lower circular plate are smaller than the inner diameter of the pressure relief pipe.

[0008] Preferably, the upper end of the spring abuts against the inner wall of the connecting cover, and the lower end of the spring abuts against the top of the abutting circular plate.

[0009] Preferably, the sealing plunger is tightly fitted to the inner wall of the pressure relief pipe, and the sealing plunger seals the connection between the pressure relief pipe and the pressure relief branch pipe.

[0010] Preferably, the limiting end cap has an exhaust hole in the middle.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses a pressure relief device for a hydrolysis reactor. By unscrewing the connecting cover from the upper end of the pressure relief pipe, the vertical rod, along with the sealing plunger and the lower circular plate, can be removed from the inside of the pressure relief pipe. Then, by unscrewing the screw from the threaded hole, the lower circular plate can be removed from the lower end of the vertical rod, allowing the sealing plunger to be removed from the vertical rod for easy replacement. By manually unscrewing the limiting end cap from the end of the purification branch pipe, the filter cartridge can be removed from the purification branch pipe for cleaning or replacement, making the operation convenient. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the external structure of a hydrolysis reactor pressure relief device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of the pressure relief pipe, pressure relief branch pipe and mounting cylinder in the pressure relief device of the hydrolysis reactor of this utility model;

[0016] Figure 3 This is an exploded view of the vertical rod, sealing plunger, and lower circular plate in a hydrolysis reactor pressure relief device according to this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Hydrolysis reactor body; 2. Pressure relief pipe; 21. Pressure relief branch pipe; 22. Purification branch pipe; 3. Connecting cover; 4. Limiting end cover; 41. Vent hole; 5. Vertical rod; 51. Limiting plate; 52. Threaded hole; 6. Spring; 7. Abutting circular plate; 8. Sealing plunger; 9. Lower circular plate; 91. Screw; 10. Filter cylinder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0021] A pressure relief device for a hydrolysis reactor includes a hydrolysis reactor body 1. A pressure relief pipe 2 is fixedly connected to the top of the hydrolysis reactor body 1. A pressure relief branch pipe 21 is fixedly installed on the side wall of the pressure relief pipe 2. A connecting cover 3 is threadedly screwed onto the top of the pressure relief pipe 2. A vertical rod 5 is movably connected through the middle of the connecting cover 3. A limit plate 51 is fixedly installed at the upper end of the vertical rod 5. A lower circular plate 9 is threadedly connected to the lower end of the vertical rod 5. A screw 91 is fixedly installed at the top of the lower circular plate 9. A threaded hole 52 is opened at the lower end of the vertical rod 5. The screw 91 is threadedly engaged with the threaded hole 52. An internal hexagonal groove is opened at the bottom of the lower circular plate 9. A movably sleeved part is connected to the vertical rod 5 above the lower circular plate 9. The diameters of the abutting circular plate 7 and the lower circular plate 9 are both smaller than the inner diameter of the pressure relief pipe 2. A sealing plunger 8 is fitted onto the vertical rod 5 between the abutting circular plate 7 and the lower circular plate 9. By unscrewing the connecting cover 3 from the upper end of the pressure relief pipe 2, the vertical rod 5, along with the sealing plunger 8 and the lower circular plate 9, can be removed from the inside of the pressure relief pipe 2. Then, by unscrewing the screw 91 from the threaded hole 52, the lower circular plate 9 can be removed from the lower end of the vertical rod 5, allowing the sealing plunger 8 to be removed from the vertical rod 5 for easy replacement. The sealing plunger 8 fits tightly against the inner wall of the pressure relief pipe 2, and the sealing plunger 8 connects the pressure relief pipe 2 to the pressure relief branch pipe 21. A spring 6 is fitted onto the vertical rod 5 between the abutting circular plate 7 and the connecting cover 3. The upper end of the spring 6 abuts against the inner wall of the connecting cover 3, and the lower end of the spring 6 abuts against the top of the abutting circular plate 7. During the long-term heating and cooling of mandelic acid in the hydrolysis reactor body 1, a large amount of gas will be generated and accumulate inside. During the gas accumulation process, it will flow into the pressure relief pipe 2. The gas entering the pressure relief pipe 2 will push the lower circular plate 9 and the sealing plunger 8 to move upward together. The upward movement of the lower circular plate 9 will drive the abutting circular plate 7 to move upward, compressing the spring 6 through the abutting circular plate 7. When the bottom of the sealing plunger 8 is higher than the pressure relief branch pipe... When the pressure relief branch pipe 21 is at the bottom inside, it is connected to the inside of the pressure relief pipe 2, and gas can enter the pressure relief branch pipe 21. After a period of use, the sealing plunger 8 ages, making it impossible for the sealing plunger 8 to seal the connection between the pressure relief pipe 2 and the pressure relief branch pipe 21 smoothly. At this time, the connecting cover 3 can be manually unscrewed from the upper end of the pressure relief pipe 2. Then, the vertical rod 5, together with the sealing plunger 8 and the lower circular plate 9, can be taken out from the inside of the pressure relief pipe 2. Then, by unscrewing the screw 91 out of the threaded hole 52, the lower circular plate 9 can be removed from the lower end of the vertical rod 5. The aged sealing plunger 8 can then be removed from the vertical rod 5 and replaced.

[0022] A purification branch pipe 22 is fixedly installed at the end of the pressure relief branch pipe 21 away from the pressure relief pipe 2. A filter cartridge 10 is placed inside the purification branch pipe 22. A limit end cap 4 is threaded onto the end of the purification branch pipe 22 away from the pressure relief branch pipe 21. An exhaust hole 41 is opened in the middle of the limit end cap 4. By manually unscrewing the limit end cap 4 from the end of the purification branch pipe 22, the filter cartridge 10 can be removed from the purification branch pipe 22 for cleaning or replacement. The operation is convenient. The gas entering the pressure relief branch pipe 21 can be filtered and purified by the filter cartridge 10 and finally exits from the exhaust hole 41. The pressure is released from the outlet, completing the depressurization of the inside of the hydrolysis reactor body 1. After the depressurization is completed, under the elastic force of the spring 6, the abutting circular plate 7 and the sealing plunger 8 can be driven to move downwards to reset until the limiting plate 51 abuts against the top of the connecting cover 3. At this time, the sealing plunger 8 can reseal the connection between the pressure relief pipe 2 and the pressure relief branch pipe 21. When it is necessary to clean or replace the filter cartridge 10, the limiting end cover 4 can be manually unscrewed from the end of the purification branch pipe 22, and the filter cartridge 10 can be taken out of the purification branch pipe 22 for cleaning or replacement.

[0023] Working Principle: During operation, when the hydrolysis reactor body 1 is heated and cooled for an extended period of time to produce mandelic acid, a large amount of gas will accumulate inside. This gas will flow into the pressure relief pipe 2, pushing the lower circular plate 9 and the sealing plunger 8 upwards. This upward movement of the lower circular plate 9 will cause the abutment plate 7 to move upwards, compressing the spring 6. When the bottom of the sealing plunger 8 is higher than the bottom of the inner side of the pressure relief branch pipe 21, the pressure relief branch pipe 21 is connected to the inside of the pressure relief pipe 2, allowing gas to enter. The gas entering the pressure relief branch pipe 21 is filtered and purified by the filter cartridge 10 before finally exiting through the exhaust port 41, thus relieving pressure inside the hydrolysis reactor body 1. After pressure relief, the spring 6, under its elastic force, will cause the abutment plate 7 and the sealing plunger 8 to move downwards. Reset the movement until the limiting plate 51 abuts against the top of the connecting cover 3. At this time, the sealing plunger 8 can reseal the connection between the pressure relief pipe 2 and the pressure relief branch pipe 21. When the filter cartridge 10 needs to be cleaned or replaced, the limiting end cover 4 can be manually unscrewed from the end of the purification branch pipe 22, and the filter cartridge 10 can be taken out of the purification branch pipe 22 for cleaning or replacement. After a period of use, the sealing plunger 8 will age, making it impossible for the sealing plunger 8 to seal the connection between the pressure relief pipe 2 and the pressure relief branch pipe 21 smoothly. At this time, the connecting cover 3 can be manually unscrewed from the upper end of the pressure relief pipe 2. Then, the vertical rod 5, together with the sealing plunger 8 and the lower circular plate 9, can be taken out from the inside of the pressure relief pipe 2. Then, by unscrewing the screw 91 out of the threaded hole 52, the lower circular plate 9 can be removed from the lower end of the vertical rod 5, and the aged sealing plunger 8 can be removed from the vertical rod 5 for replacement.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A pressure relief device for a hydrolysis reactor, comprising a hydrolysis reactor body (1), characterized in that: A pressure relief pipe (2) is fixedly connected to the top of the hydrolysis reactor body (1). A pressure relief branch pipe (21) is fixedly installed on the side wall of the pressure relief pipe (2). A connecting cover (3) is threaded onto the top of the pressure relief pipe (2). A vertical rod (5) is movably connected through the middle of the connecting cover (3). A limit plate (51) is fixedly installed at the upper end of the vertical rod (5). A lower circular plate (9) is threaded onto the lower end of the vertical rod (5). An abutment circle is movably sleeved on the vertical rod (5) above the lower circular plate (9). A sealing plunger (8) is fitted on the vertical rod (5) between the abutting circular plate (7) and the lower circular plate (9). A spring (6) is fitted on the vertical rod (5) between the abutting circular plate (7) and the connecting cover (3). A purification branch pipe (22) is fixedly installed at the end of the pressure relief branch pipe (21) away from the pressure relief pipe (2). A filter cylinder (10) is placed inside the purification branch pipe (22). A limit end cap (4) is threaded onto the end of the purification branch pipe (22) away from the pressure relief branch pipe (21).

2. The pressure relief device for a hydrolysis reactor according to claim 1, characterized in that, A screw (91) is fixedly installed on the top of the lower circular plate (9), and a threaded hole (52) is opened at the lower end of the vertical rod (5). The screw (91) is threadedly engaged with the threaded hole (52), and an inner hexagonal groove is opened at the bottom of the lower circular plate (9).

3. The pressure relief device for a hydrolysis reactor according to claim 1, characterized in that, The diameters of the abutting circular plate (7) and the lower circular plate (9) are both smaller than the inner diameter of the pressure relief pipe (2).

4. The pressure relief device for a hydrolysis reactor according to claim 1, characterized in that, The upper end of the spring (6) abuts against the inner wall of the connecting cover (3), and the lower end of the spring (6) abuts against the top of the abutting circular plate (7).

5. The pressure relief device for a hydrolysis reactor according to claim 1, characterized in that, The sealing plunger (8) fits tightly against the inner wall of the pressure relief pipe (2), and the sealing plunger (8) seals the connection between the pressure relief pipe (2) and the pressure relief branch pipe (21).

6. The pressure relief device for a hydrolysis reactor according to claim 1, characterized in that, The limiting end cap (4) has an exhaust hole (41) in the middle.

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