A diphenyl sulfone melt heating, holding and delivery apparatus

Abstract

The utility model relates to the technical field of chemical conveying equipment, concretely relates to a diphenyl sulfone melting heating heat preservation conveying device, including conveying pump, the output of conveying pump is installed with main pipeline, the other end of main pipeline is installed with the collection jar, and the low point of main pipeline is equipped with the emptying bottle, and the part of main pipeline is equipped with the valve door near conveying pump, and the sweep interface is equipped between conveying pump and main pipeline, heat preservation subassembly, heat preservation subassembly is established in conveying pump's one side, and heat preservation subassembly is used for keeping the temperature in main pipeline, cooperation subassembly, cooperation subassembly installs in heat preservation subassembly, and cooperation subassembly is used for cooperation heat preservation subassembly quick installation. Compared with the prior art, the application realizes the continuous melting of diphenyl sulfone in the whole conveying process and the modular maintenance of the system by setting the efficient circulating heat preservation subassembly, the sweeping and emptying structure and the quick cooperation dismounting mechanism, thereby significantly improving the stability, safety and maintenance convenience of the conveying system.

Description

Technical Field

[0001] This utility model relates to the field of chemical conveying equipment technology, and in particular to a diphenyl sulfone melting heating and heat preservation conveying device. Background Technology

[0002] Diphenyl sulfone is a high-melting-point organic compound widely used in polyarylsulfone resins, pharmaceutical intermediates, and high-temperature solvents. Due to its high melting point, it is solid at room temperature and has the characteristics of high viscosity, easy crystallization, and rapid solidification upon cooling. Therefore, it is prone to crystallization blockage during transportation, storage, and heating.

[0003] In traditional diphenyl sulfone (DPS) melting and conveying processes, materials are typically pumped from a melting tank into the main pipeline and then transported to the reaction or storage unit via a transfer pump. Due to the long conveying path and large temperature differences, electric heating or steam tracing cannot guarantee a continuous and stable internal temperature in the pipeline. Once temperature fluctuations occur, residual DPS in the pipes easily condenses and crystallizes in valves, pumps, and bends, causing blockages and affecting the continuous operation of the system. At the same time, existing systems are difficult to thoroughly drain and purge residual liquid from the pipelines after shutdown, and solidified deposits are easily formed after long-term use. This not only increases the difficulty of cleaning but also poses safety hazards such as pipeline rupture and pump damage during secondary heating.

[0004] In addition, the existing heating and insulation devices are mostly integrally welded or threaded fixed. Once maintenance or replacement of local parts is required, the whole device often needs to be disassembled, which is time-consuming and labor-intensive. Furthermore, the insulation layer is difficult to restore, resulting in a decrease in thermal efficiency. Although some devices are equipped with disassembly and assembly mechanisms, the connections are complex, the sealing performance is poor, and the risk of heat medium leakage is high, making it difficult to meet the requirements of chemical production for "safe, continuous, and maintainable" high-temperature molten material conveying systems. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a diphenyl sulfone melting heating and insulation conveying device to solve the problems in the prior art that diphenyl sulfone is prone to crystallization and blockage due to uneven temperature during the conveying process, the pipeline residual liquid is difficult to drain completely, and the insulation system is inconvenient to disassemble and maintain.

[0006] Based on the above objectives, this utility model provides a diphenyl sulfone melting heating and heat preservation conveying device, comprising: a conveying pump, a main pipeline installed at the output end of the conveying pump, a collection tank installed at the other end of the main pipeline, a drain bottle provided at the low point of the main pipeline, a valve provided on the part of the main pipeline near the conveying pump, and a purging interface provided between the conveying pump and the main pipeline; A thermal insulation component is disposed on one side of the delivery pump, and the thermal insulation component is used to maintain the temperature inside the main pipeline; A fitting component is installed inside the insulation component and is used to facilitate the rapid installation of the insulation component.

[0007] Preferably, the insulation component includes a heating furnace disposed on one side of the delivery pump, an insulation sleeve is provided on the outside of the main pipeline, and an insulation shell is provided on the outside of both the delivery pump and the valve. Several infusion pipes are evenly laid inside the insulation shell and the insulation sleeve. The heating furnace is connected to the infusion pipes through a heat medium pipeline, and the heating furnace and the end of the main pipeline near the collection tank are connected by a return pipe.

[0008] Preferably, the mating assembly includes a connecting pipe for installing the two insulation shells, with an installation base mounted on one side of one of the insulation shells, a connecting sleeve welded to one side of the installation base, a mating sleeve threaded onto the connecting sleeve, a male head welded to one side of the mating sleeve, the male head having several locking slots, a female head welded to one end of the connecting pipe, and several locking heads movably mounted on the female head, one end of each locking head being adapted to the locking slot.

[0009] Preferably, the female head has a plurality of mounting grooves, and mounting holes are provided on both sides of the mounting grooves. A connecting shaft is fixedly installed at one end of the lock head, and the connecting shaft is rotatably installed in the mounting hole.

[0010] Preferably, a strong spring is fixedly installed at one end of the mounting groove away from the mounting hole, and the other end of the strong spring is fixedly connected to one side of the lock head.

[0011] Preferably, an unlocking disc is slidably mounted on the outer circumference of the female head, and a plurality of push plates are evenly fixedly mounted on one side of the unlocking disc, with one side of the push plates abutting against one side of the lock head.

[0012] Preferably, a mating tube is welded to one side of the female head, and a sealing ring is provided at the end of the mating tube away from the female head. The mating tube is adapted to the mating sleeve.

[0013] The beneficial effects of this utility model are: 1. This diphenyl sulfone molten heating and insulation conveying device is equipped with insulation components to achieve continuous constant temperature conveying of molten diphenyl sulfone. The device has insulation components such as a heating furnace, insulation sleeve, and insulation shell installed outside the conveying pump, main pipeline, and valves. The liquid delivery pipe is evenly laid inside the insulation components. The overall heating is achieved through heat medium circulation. The high-temperature heat medium generated by the heating furnace is input into the liquid delivery pipe through the heat medium pipeline, forming a uniform heat field outside the main pipeline to continuously heat and keep the diphenyl sulfone flowing through it. The return pipe returns the cooled heat medium to the heating furnace, forming a closed circulation system. This structure effectively prevents the problem of uneven temperature gradient during the conveying process, ensures that diphenyl sulfone always remains in a molten state, avoids crystallization and blockage due to local cooling, and significantly improves the stability and continuous operation capability of the conveying system.

[0014] 2. This diphenyl sulfone melting heating and insulation conveying device is equipped with a purge port and a drain bottle to achieve rapid emptying and anti-clogging of the pipeline. A purge port is added between the conveying pump and the main pipeline, and a drain bottle is set at the low point of the main pipeline. When the machine is stopped, inert gas is introduced through the purge port to push the residual diphenyl sulfone in the main pipeline to the collection tank, while the residual liquid at the low point flows into the drain bottle. This structure ensures that the pipeline, valves and pump chamber are thoroughly emptied, preventing the molten material from solidifying and crystallizing in the pipeline due to cooling, and avoiding blockage during restart. Structurally, it eliminates the disadvantages of easy clogging and difficult cleaning in traditional heating and conveying systems, greatly improves the maintainability and long-term operational reliability of the equipment, and reduces manual cleaning and maintenance costs.

[0015] 3. This diphenyl sulfone melting heating and insulation conveying device is equipped with matching components to enable rapid assembly, disassembly, and maintenance of the insulation system. By adding matching components between the insulation shells, the device achieves rapid connection and separation of the conveying pipeline and the insulation structure. The matching components adopt a male-female head structure, combined with a mechanical locking mechanism consisting of a lock head, a strong spring, and an unlocking disc. Connection or disassembly operations can be completed simply by sliding the unlocking disc. This structure eliminates the need for thread tightening or welding, significantly shortening maintenance time. Its internal sealing ring ensures reliable sealing after connection, preventing heat medium leakage. This rapid assembly and disassembly structure effectively improves the maintainability of the system, allowing operators to easily replace or repair any section of the insulation shell without affecting the overall insulation effect, thus improving the flexibility and safety of system operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the planar structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the thermal insulation shell of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the components of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the unlocking disc, push plate, and sealing ring of this utility model.

[0018] The diagram is marked as follows: 1. Transfer pump; 2. Main pipeline; 3. Heating furnace; 4. Return pipe; 5. Heat medium pipeline; 6. Collection tank; 7. Valve; 8. Drain bottle; 9. Purge interface; 10. Blank; 11. Insulation shell; 12. Infusion tube; 13. Mounting chassis; 14. Connecting sleeve; 15. Mating sleeve; 16. Male connector; 17. Locking port; 18. Female connector; 19. Lock head; 20. Connecting pipe; 21. Unlocking disc; 22. Push plate; 23. Sealing ring; 24. Mounting hole; 25. Strong spring; 26. Connecting shaft; 27. Insulation sleeve; 28. Mounting groove; 29. ​​Mating tube end. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 4 As shown, the diphenyl sulfone melting heating and insulation conveying device includes: a conveying pump 1, a main pipeline 2 installed at the output end of the conveying pump 1, a collection tank 6 installed at the other end of the main pipeline 2, a drain bottle 8 located at the low point of the main pipeline 2, a valve 7 located on the part of the main pipeline 2 near the conveying pump 1, and a purging port 9 located between the conveying pump 1 and the main pipeline 2; an insulation component located on one side of the conveying pump 1, used to maintain the temperature inside the main pipeline 2; and a matching component installed inside the insulation component, used to facilitate quick installation of the insulation component. In operation, the diphenyl sulfone molten heating and insulation conveying device of this invention starts working, providing uniform heat protection for the entire system. At this time, the conveying pump 1 is started, and the molten diphenyl sulfone is pressurized by the conveying pump 1 and enters the main pipeline 2, flows through the valve 7, and is finally conveyed to the collection tank 6 for collection. In the case of shutdown, the conveying pump 1 is first turned off, and then inert gas is introduced into the main pipeline 2 through the purging port 9. The gas pushes most of the residual liquid in the main pipeline 2 to the collection tank 6, while the small amount of residual liquid deposited at the low point of the pipeline is collected in the drain bottle 8 for centralized treatment, thereby ensuring that the inside of the main pipeline 2, valve 7 and other components is completely emptied, fundamentally preventing diphenyl sulfone crystallization blockage. Throughout the process, the cooperating components ensure that the insulation components can be quickly installed and maintained, thereby ensuring the continuity and stability of the insulation effect.

[0022] like Figure 1 , Figure 2 As shown, the insulation component includes a heating furnace 3 installed on one side of the delivery pump 1, an insulation sleeve 27 sleeved on the outside of the main pipeline 2, an insulation shell 11 installed on the outside of both the delivery pump 1 and the valve 7, and several infusion pipes 12 evenly laid inside the insulation shell 11 and the insulation sleeve 27. The heating furnace 3 is connected to the infusion pipes 12 through a heat medium pipeline 5, and the heating furnace 3 and the end of the main pipeline 2 near the collection tank 6 are connected through a return pipe 4. During the operation of the insulation component described in this utility model: the heating furnace 3 generates a high-temperature heat medium as a heat source. The heat medium is pumped into the heating medium pipeline 5 and distributed in numerous liquid delivery pipes 12 laid in the insulation sleeve 27 and the insulation shell 11 outside the delivery pump 1 and valve 7, forming a uniform heat tracing network covering the main pipeline 2, delivery pump 1 and valve 7, and continuously insulating the diphenyl sulfone flowing through the main pipeline 2. After the heat exchange is completed, the temperature of the heat medium decreases and returns to the heating furnace 3 through the return pipe 4 connected to the end of the main pipeline 2 near the collection tank 6 and the heating furnace 3 for circulating heating, thereby forming a closed continuous circulating insulation system, ensuring that the diphenyl sulfone always remains in a molten state during the transportation process, and effectively preventing it from crystallizing and solidifying due to the temperature drop.

[0023] like Figure 3 , Figure 4As shown, the mating assembly includes a connecting pipe 20 between two insulation shells 11. A mounting base 13 is mounted on one side of one of the insulation shells 11. A connecting sleeve 14 is welded to one side of the mounting base 13. A mating sleeve 15 is threaded onto the connecting sleeve 14. A male head 16 is welded to one side of the mating sleeve 15. The male head 16 has several locking slots 17. A female head 18 is welded to one end of the connecting pipe 20. Several locking heads 19 are movably mounted on the female head 18, with one end of each locking head 19 fitting into a locking slot 17. The female head 18 has several mounting grooves 28, and mounting holes 24 are symmetrically located on both sides of each mounting groove 28. One end of the lock head 19 is fixedly mounted with a connecting shaft 26, which is rotatably mounted in the mounting hole 24. A strong spring 25 is fixedly mounted at the end of the mounting groove 28 away from the mounting hole 24, and the other end of the strong spring 25 is fixedly connected to one side of the lock head 19. An unlocking disc 21 is slidably mounted on the outer circumference of the female head 18. Several push plates 22 are evenly fixedly mounted on one side of the unlocking disc 21, and one side of the push plates 22 abuts against one side of the lock head 19. A mating tube head 29 is welded to one side of the female head 18. A sealing ring 23 is provided at the end of the mating tube head 29 away from the female head 18, and the mating tube head 29 is compatible with the mating sleeve 15. When maintenance is required, the connecting pipe 20 and the insulation shell 11 can be quickly disassembled via the mating components of this diphenyl sulfone melting heating and insulation conveying device. Specifically, the mating pipe end 29 of the female connector 18 is aligned with the mating sleeve 15 of the male connector 16 and inserted, so that the sealing ring 23 at the end of the mating pipe end 29 forms a preliminary seal. During this process, the end face of the male connector 16 pushes the inclined surface of the locking head 19 to rotate and retract into the mounting groove 28. When the locking head 19 moves to align with the locking port 17 on the male connector 16, the restoring force of the strong spring 25 pushes the locking head 19 around the connecting pipe. The shaft 26 rotates so that its end engages with the locking slot 17, thereby achieving a quick locking connection between the male head 16 and the female head 18. At this time, the connecting tube 20 connects the infusion tubes 12 of the two insulation shells 11. When disassembly is required, the unlocking disc 21 is slid forward, and the push plate 22 on it moves accordingly and pushes the locking head 19 to overcome the elastic force of the strong spring 25 and rotate in the opposite direction around the connecting shaft 26, thereby disengaging the end of the locking head 19 from the locking slot 17, thus separating the male head 16 and the female head 18, and disconnecting the connection between the two insulation shells 11.

[0024] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0025] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A diphenyl sulfone melting, heating, heat preservation, and conveying device, characterized in that, include: A delivery pump (1) is provided with a main pipeline (2) installed at the output end of the delivery pump (1), a collection tank (6) is installed at the other end of the main pipeline (2), a drain bottle (8) is provided at the low point of the main pipeline (2), a valve (7) is provided on the part of the main pipeline (2) near the delivery pump (1), and a purge port (9) is provided between the delivery pump (1) and the main pipeline (2). The insulation component is disposed on one side of the delivery pump (1) and is used to maintain the temperature inside the main pipeline (2); A fitting component is installed inside the insulation component and is used to facilitate the rapid installation of the insulation component.

2. The diphenyl sulfone melting, heating, heat preservation, and conveying device according to claim 1, characterized in that, The insulation component includes a heating furnace (3) disposed on one side of the delivery pump (1), an insulation sleeve (27) is provided on the outside of the main pipeline (2), an insulation shell (11) is provided on the outside of the delivery pump (1) and the valve (7), and several infusion pipes (12) are evenly laid inside the insulation shell (11) and the insulation sleeve (27). The heating furnace (3) is connected to the infusion pipe (12) through a heat medium pipeline (5), and the heating furnace (3) and the end of the main pipeline (2) near the collection tank (6) are connected by a return pipe (4).

3. The diphenyl sulfone melting, heating, heat preservation, and conveying device according to claim 2, characterized in that, The fitting assembly includes a connecting pipe (20) between the two insulation shells (11). One of the insulation shells (11) is fitted with a mounting base (13). A connecting sleeve (14) is welded to one side of the mounting base (13). A fitting sleeve (15) is threaded onto the connecting sleeve (14). A male head (16) is welded to one side of the fitting sleeve (15). Several locking holes (17) are provided on the male head (16). A female head (18) is welded to one end of the connecting pipe (20). Several locking heads (19) are movably installed on the female head (18). One end of the locking head (19) is adapted to the locking hole (17).

4. The diphenyl sulfone melting, heating, heat preservation, and conveying device according to claim 3, characterized in that, The female head (18) has several mounting grooves (28), and mounting holes (24) are provided on both sides of the mounting grooves (28). A connecting shaft (26) is fixedly installed at one end of the lock head (19), and the connecting shaft (26) is rotatably installed in the mounting hole (24).

5. The diphenyl sulfone melting, heating, heat preservation, and conveying device according to claim 4, characterized in that, A strong spring (25) is fixedly installed at one end of the mounting groove (28) away from the mounting hole (24), and the other end of the strong spring (25) is fixedly connected to one side of the lock head (19).

6. The diphenyl sulfone melting, heating, heat preservation, and conveying device according to claim 5, characterized in that, An unlocking disc (21) is slidably mounted on the outer circumference of the female head (18). Several push plates (22) are evenly fixed on one side of the unlocking disc (21), and one side of the push plate (22) abuts against one side of the lock head (19).

7. The diphenyl sulfone melting, heating, heat preservation, and conveying device according to claim 6, characterized in that, A mating tube head (29) is welded to one side of the female head (18). A sealing ring (23) is provided at the end of the mating tube head (29) away from the female head (18). The mating tube head (29) is adapted to the mating sleeve (15).

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