A chemical enamel-lined reaction vessel with hollow heat exchange baffles

Abstract

This utility model relates to the field of enamel-lined reaction vessel technology, and discloses a chemical enamel-lined reaction vessel with a hollow heat exchange baffle. The reaction vessel includes a reaction vessel body, a stirring mechanism, and a heat exchange mechanism. The heat exchange mechanism includes a hollow heat exchange plate with a baffle plate inside to guide the tortuous flow of the heat exchange medium. The stirring mechanism includes a stirring shaft, a rotating shaft, and a connecting mechanism for detachable connection between the two. The connecting mechanism includes a connecting shaft, a sliding sleeve, a spring, and a fixed ball. The sliding sleeve can move under the action of the spring to control the locking or releasing of the fixed ball on the connecting shaft, thereby achieving quick assembly and disassembly of the stirring shaft. This utility model solves the problem of uneven heat exchange in existing reaction vessels by setting a hollow heat exchange plate with an internal baffle plate, achieving a high-efficiency and uniform heat exchange effect. Simultaneously, by setting a quick-release connecting mechanism, it solves the problems of difficult, time-consuming, and labor-intensive assembly and disassembly of the stirring shaft, significantly shortening equipment maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction equipment technology, and in particular to a chemical enamel reaction vessel with a hollow heat exchange baffle. Background Technology

[0002] Enameled reaction vessels are widely used as core reaction equipment in industries such as chemical, pharmaceutical, and pesticide manufacturing due to their excellent corrosion resistance. In most chemical reactions, uniform mixing of reactants and precise control of reaction temperature are crucial for ensuring reaction rate, product yield, and quality.

[0003] Currently, conventional enamel-lined reactors primarily achieve temperature control through external jackets or internal coils. The heat exchange area of ​​the external jacket is limited by the reactor's own surface area. For large-volume reactors or reactions with significant thermal effects, its heat exchange capacity is often insufficient, easily leading to uneven temperature distribution of materials inside the reactor, resulting in localized overheating or undercooling. To compensate for this deficiency, the industry often adds heat exchange coils inside the reactor. While this increases the heat exchange area, the coil structure is complex, not only interfering with normal material flow and creating dead zones for stirring, but also easily causing adhesion to the walls, affecting long-term heat exchange performance and making cleaning difficult.

[0004] More importantly, both the agitator and its internal heat exchange components face wear and corrosion after prolonged use, requiring regular maintenance or replacement. However, these internal components, especially the agitator shaft, are typically connected using flanges and bolts, making disassembly and assembly extremely cumbersome and time-consuming, resulting in long downtime and severely impacting production efficiency. Current technology fails to provide a balanced solution that improves heat exchange performance while simplifying equipment maintenance; the complex internal structure designed for high-efficiency heat exchange often makes maintenance even more difficult. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a chemical enamel-lined reaction vessel with a hollow heat exchange baffle, aiming to improve the problems of low heat exchange efficiency, uneven temperature distribution, and cumbersome, time-consuming and labor-intensive disassembly and maintenance of internal components such as the stirring shaft in chemical enamel-lined reaction vessels. This utility model aims to provide a chemical enamel-lined reaction vessel with a hollow heat exchange baffle that has an improved structure and can effectively solve the above problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a chemical enamel-lined reaction vessel with a hollow heat exchange baffle, comprising: a reaction vessel body, and a stirring mechanism and a heat exchange mechanism disposed within the reaction vessel body, wherein the stirring mechanism includes a stirring shaft and stirring blades; and a heat exchange plate, a baffle plate, a water inlet pipe, a water outlet pipe, a rotating shaft, and a connecting mechanism.

[0007] The core component of the heat exchange mechanism, the heat exchange plate, has a hollow structure, and the baffle plate is installed inside the heat exchange plate.

[0008] Furthermore, the stirring mechanism also includes the rotating shaft and the connecting mechanism. The connecting mechanism includes a connecting shaft, a sliding sleeve, a spring, and a fixed ball. The connecting shaft is fixedly connected to the stirring shaft. The sliding sleeve is fitted onto the connection between the connecting shaft and the rotating shaft, and the connecting shaft and the rotating shaft are locked together by the spring and the fixed ball to achieve a detachable connection between the two.

[0009] Preferably, the heat exchange plates are multiple pieces, stacked vertically along the axial direction of the stirring shaft; the upper heat exchange plate is provided with a drain outlet, which is connected to the internal space of the adjacent lower heat exchange plate.

[0010] Preferably, the barrier plate divides the interior of the heat exchange plate into tortuous flow channels.

[0011] Preferably, the outer periphery of the connecting shaft is provided with an annular groove, and the end of the rotating shaft is provided with a radial through hole for receiving the fixed ball; in the locked state, the inner wall of the sliding sleeve presses the fixed ball under the elastic force of the spring, so that the fixed ball is partially located in the radial through hole and embedded in the annular groove.

[0012] Preferably, when the sliding sleeve slides axially to compress the spring, its inner wall can release the pressure on the fixed ball, allowing the fixed ball to disengage from the annular groove, thereby achieving the separation of the connecting shaft from the rotating shaft.

[0013] Preferably, the stirring mechanism further includes a frame disposed on the top of the reactor body, and a motor and a reducer mounted on the frame; the motor is drivenly connected to the reducer, and the reducer is drivenly connected to the rotating shaft.

[0014] Preferably, the reactor body is also provided with a feed pipe, a discharge pipe and a hand hole.

[0015] Preferably, a support plate is also fixed to the outer wall of the reactor body, and the support plate is located below the hand hole.

[0016] This utility model has the following beneficial effects: In this invention, by setting a hollow heat exchange plate with internal baffles, and allowing the heat exchange medium to flow in a tortuous manner and be transferred layer by layer within the heat exchange plate, the problems of uneven heat exchange and low efficiency existing in the jacket or coil heat exchange methods of the reactor in the prior art are solved. This achieves the technical effect of rapid and uniform heat exchange of materials in the reactor, and improves the temperature controllability and stability of the reaction process.

[0017] This utility model solves the problem that the existing technology of using flange bolts to connect the stirring shaft usually results in a complicated, time-consuming, labor-intensive, and inconvenient disassembly and assembly process, and maintenance difficulties. It achieves the technical effect of quickly disassembling and installing the stirring shaft without complicated tools, which greatly shortens the equipment maintenance time and reduces labor intensity. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a chemical enamel reaction vessel with a hollow heat exchange baffle proposed in this utility model. Figure 2 This is a schematic diagram of the heat exchange plate structure of a chemical enamel reaction vessel with a hollow heat exchange baffle proposed in this utility model. Figure 3 This is a schematic diagram of the stirring blade part of a chemical enamel reaction vessel with a hollow heat exchange baffle proposed in this utility model. Figure 4 This is a schematic diagram of the connecting shaft portion of a chemical enamel reaction vessel with a hollow heat exchange baffle proposed in this utility model.

[0019] Legend: 1. Motor; 2. Reducer; 3. Frame; 4. Connecting mechanism; 401. Sliding sleeve; 402. Rotating shaft; 403. Spring; 404. Fixed ball; 405. Connecting shaft; 5. Heat exchange mechanism; 501. Water inlet pipe; 502. Heat exchange plate; 503. Baffle plate; 504. Water outlet; 505. Water outlet pipe; 6. Stirring shaft; 7. Feed pipe; 8. Reactor body; 9. Support plate; 10. Discharge pipe; 11. Stirring blade; 12. Hand hole. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4 This utility model provides a chemical enamel-lined reaction vessel with a hollow heat exchange baffle, which aims to solve the problems of uneven heat exchange, low efficiency and complicated disassembly and maintenance of the stirring shaft in the existing enamel-lined reaction vessels.

[0022] like Figure 1As shown, the chemical enamel-lined reaction vessel with hollow heat exchange baffle includes a reaction vessel body 8. A heat exchange mechanism 5 and a stirring mechanism are installed inside the reaction vessel body 8. A frame 3 is fixed on the top of the reaction vessel body 8. A motor 1 and a reducer 2 for providing power are installed on the frame 3. The reaction vessel body 8 is also provided with a feed pipe 7, a discharge pipe 10 and a manhole 12. A support plate 9 is fixed on the outer wall of the reaction vessel body 8. The support plate 9 is located below the manhole 12 to facilitate personnel maintenance operations.

[0023] Please refer to the reference. Figure 1 and Figure 2 The heat exchange mechanism 5 includes an inlet pipe 501, a hollow heat exchange plate 502, a drain outlet 504, and an outlet pipe 505. The heat exchange plate 502 consists of multiple plates stacked vertically along the axial direction of the stirring shaft 6 of the stirring mechanism. A baffle plate 503 is provided inside the heat exchange plate 502, which divides the interior of the heat exchange plate 502 into a tortuous flow channel. The heat exchange medium enters the uppermost heat exchange plate 502 from the inlet pipe 501. Under the guidance of the baffle plate 503, it flows fully along the tortuous flow channel and then flows out from the drain outlet 504 of the upper heat exchange plate 502 and enters the interior space of the adjacent lower heat exchange plate 502. This flow continues layer by layer until it is finally discharged from the bottom outlet pipe 505. This structure increases the flow path of the heat exchange medium and achieves uniform and efficient heat exchange of the materials in the reactor body 8.

[0024] Please refer to the reference. Figure 1 , Figure 3 and Figure 4 The stirring mechanism includes a motor 1, a reducer 2, a frame 3, a connecting mechanism 4, a stirring shaft 6, and stirring blades 11. The motor 1 is driven by the reducer 2, and the output end of the reducer 2 is driven by the rotating shaft 402 of the connecting mechanism 4. The connecting mechanism 4 is used to achieve a detachable connection between the rotating shaft 402 and the stirring shaft 6. The stirring blades 11 are fixedly connected to the end of the stirring shaft 6. The connecting mechanism 4 is key to enabling quick assembly and disassembly of the stirring shaft 6. The connecting mechanism 4 includes a rotating shaft 402, a connecting shaft 405, a sliding sleeve 401, a spring 403, and a fixed ball 404. 05 is fixedly connected to the stirring shaft 6. The end of the rotating shaft 402 is provided with a radial through hole for receiving the fixed ball 404. The outer periphery of the connecting shaft 405 is provided with an annular groove. The sliding sleeve 401 is fitted outside the connection between the connecting shaft 405 and the rotating shaft 402. In the locked state, the spring 403 provides a restoring force to push the sliding sleeve 401. The inner wall of the sliding sleeve 401 presses the fixed ball 404, so that the fixed ball 404 is partially located in the radial through hole and embedded in the annular groove, thereby firmly locking the rotating shaft 402 and the connecting shaft 405 together to ensure stable power transmission.

[0025] Please refer to the following carefully. Figure 4The outer peripheral surface of the connecting shaft 405 of the connecting mechanism 4 is machined with an annular groove, while the end of the rotating shaft 402 is provided with a radial through hole. The fixed ball 404 is housed in the radial through hole. The inside of the sliding sleeve 401 is provided with a stepped structure that cooperates with the spring 403. The spring 403 is sleeved on the outside of the rotating shaft 402. One end of the spring 403 abuts against the inner step of the sliding sleeve 401, and the other end abuts against the flange of the rotating shaft 402. In the assembled state, the spring 403 always applies an axial thrust to the sliding sleeve 401.

[0026] In the locked state, the spring 403 pushes the sliding sleeve 401 to move, and the inner wall of the sliding sleeve 401 presses against the fixed ball 404 located in the radial through hole, forcing a part of the fixed ball 404 to bulge inward and get into the annular groove of the connecting shaft 405. This mechanical locking structure formed by the sliding sleeve 401, the fixed ball 404 and the annular groove ensures a stable circumferential fixation and axial limit between the rotating shaft 402 and the connecting shaft 405, thereby reliably transmitting the torque output by the motor 1 and the reducer 2.

[0027] When it is necessary to disassemble the stirring shaft 6, the operator pushes the sliding sleeve 401 in the opposite direction along the axial direction to overcome the elastic force of the spring 403 and compress the spring 403. After the inner wall of the sliding sleeve 401 moves, it releases the radial pressure on the fixed ball 404. At this time, the fixed ball 404 can move outward in the radial through hole, thereby completely disengaging from the annular groove of the connecting shaft 405. The lock between the connecting shaft 405 and the rotating shaft 402 is released, and the maintenance personnel can directly pull out the connecting shaft 405 together with the fixedly connected stirring shaft 6 and stirring blade 11. The whole process does not require the use of complicated tools and is extremely convenient to operate.

[0028] As a preferred embodiment, to further improve heat exchange efficiency and uniformity, please refer to... Figure 2 The heat exchange mechanism 5 has multiple heat exchange plates 502, which are stacked up and down along the axial direction of the stirring shaft 6. The bottom of the upper heat exchange plate 502 is provided with a drain port 504, which is connected to the internal hollow space of the adjacent lower heat exchange plate 502 to form a series flow path. The heat exchange medium can flow through all heat exchange plates 502 from top to bottom, ensuring maximum heat exchange with the material in the reactor body 8.

[0029] As a further description of the internal structure of the heat exchange plate 502, the baffle plate 503 divides the interior of the heat exchange plate 502 into a tortuous flow channel. The design of this flow channel prevents the heat exchange medium from flowing directly from the inlet to the outlet, but forces it to circulate inside the heat exchange plate 502.

[0030] As a preferred embodiment, please refer to Figure 1The driving part of the stirring mechanism includes a frame 3 fixedly installed on the top of the reactor body 8. The motor 1 and the reducer 2 are both installed on the frame 3. The output shaft of the motor 1 is connected to the input shaft of the reducer 2, and the output shaft of the reducer 2 is connected to the rotating shaft 402 of the connecting mechanism 4, providing a power source for the entire stirring process.

[0031] As another preferred embodiment, in order to facilitate feeding, discharging and maintenance in the chemical production process, the reactor body 8 is also integrally provided with a feed pipe 7 and a discharge pipe 10, and a hand hole 12 for manual maintenance is opened on the top of the reactor body. In order to improve the safety and convenience of maintenance, a support plate 9 is welded and fixed on the outer wall of the reactor body 8 below the hand hole 12, so that the operator can safely stand on the support plate 9 to carry out internal inspection and maintenance work.

[0032] Working principle: During the chemical reaction, the reactants are first added to the reactor body 8 through the feed pipe 7. Then, the motor 1 is started, which drives the reducer 2. The output of the reducer 2 drives the rotating shaft 402 to rotate. Since the rotating shaft 402 is locked to the connecting shaft 405 through the connecting mechanism 4, the power is transmitted to the stirring shaft 6, which is fixedly connected to the connecting shaft 405. This drives the stirring blades 11, which are fixedly connected to the end of the stirring shaft 6, to rotate synchronously, thus achieving thorough mixing of the materials in the reactor body 8. At the same time, according to the reaction temperature requirements, the heat exchange medium is introduced from the water inlet pipe 50. 1. The heat exchange medium enters the hollow space of the uppermost heat exchange plate 502. Due to the baffle plate 503 installed inside the heat exchange plate 502, the heat exchange medium is guided to flow along the tortuous flow channel separated by the baffle plate 503. After fully exchanging heat with the material in the reactor, the medium flows out from the drain port 504 of the upper heat exchange plate 502 and enters the adjacent lower heat exchange plate 502 to continue heat exchange. This process continues to flow downwards layer by layer, and finally flows out from the bottommost water outlet pipe 505, completing the uniform and efficient heating or cooling process of the material in the reactor body 8. After the reaction is completed, the product is discharged from the discharge pipe 10. When the stirring blade 11 needs maintenance or replacement, maintenance personnel can stand on the support plate 9 and operate through the handhole 12. At the frame 3, the sliding sleeve 401 of the connecting mechanism 4 is pushed upward along the axial direction. When the sliding sleeve 401 moves upward, it compresses the spring 403. The inner wall of the sliding sleeve 401 then releases the radial clamping force on the fixed ball 404, and the fixed ball 404 can then retract outward into the radial through hole of the rotating shaft 402. This allows the fixed ball 404 to completely disengage from the annular groove of the connecting shaft 405. At this time, the connecting shaft 405 and the rotating shaft 402 are no longer in contact. Once the lock of 2 is released, the connecting shaft 405 can be pulled down, causing the stirring shaft 6, which is fixedly connected to it, to be disassembled from the reactor body 8. During installation, the connecting shaft 405 with the stirring shaft 6 is aligned with the rotating shaft 402 and inserted. After the sliding sleeve 401 is released, under the restoring force of the spring 403, the sliding sleeve 401 moves down automatically, and the inner wall of the sliding sleeve 401 presses the fixing ball 404 again, forcing the fixing ball 404 to embed itself into the annular groove of the connecting shaft 405, thus achieving quick and automatic locking. The entire disassembly and assembly process is simple and quick.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle, comprising a reaction vessel body (8), and a stirring mechanism and a heat exchange mechanism (5) disposed within the reaction vessel body (8); the stirring mechanism comprises a stirring shaft (6) and stirring blades (11) fixedly connected to the end of the stirring shaft (6). Its features are, The heat exchange mechanism (5) includes a hollow heat exchange plate (502), and the heat exchange plate (502) is provided with a baffle plate (503) for guiding the flow of heat exchange medium. The heat exchange mechanism (5) is also provided with an inlet pipe (501) and an outlet pipe (505) that communicate with the internal space of the heat exchange plate (502). The stirring mechanism further includes a rotating shaft (402) and a connecting mechanism (4). The connecting mechanism (4) is used to realize the detachable connection between the stirring shaft (6) and the rotating shaft (402). The connecting mechanism (4) includes a connecting shaft (405), a sliding sleeve (401), a spring (403), and a fixed ball (404). The connecting shaft (405) is fixedly connected to the stirring shaft (6). The sliding sleeve (401) is fitted onto the connection between the connecting shaft (405) and the rotating shaft (402), and the connecting shaft (405) and the rotating shaft (402) are locked by the spring (403) and the fixed ball (404).

2. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle as described in claim 1, characterized in that, The heat exchange plates (502) are multiple pieces, and are stacked up and down along the axial direction of the stirring shaft (6); the upper heat exchange plate (502) is provided with a drain outlet (504), and the drain outlet (504) is connected to the internal space of the adjacent lower heat exchange plate (502).

3. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle according to claim 2, characterized in that, The baffle plate (503) divides the interior of the heat exchange plate (502) into a tortuous flow channel. The inlet of the flow channel is connected to the water inlet pipe (501) or the drain outlet (504) of the upper heat exchange plate (502), and the outlet is the drain outlet (504) or the water outlet pipe (505).

4. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle as described in claim 1, characterized in that, The outer periphery of the connecting shaft (405) is provided with an annular groove, and the end of the rotating shaft (402) is provided with a radial through hole for receiving the fixed ball (404); in the locked state, the inner wall of the sliding sleeve (401) presses the fixed ball (404) under the elastic force of the spring (403), so that the fixed ball (404) is partially located in the radial through hole and embedded in the annular groove.

5. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle according to claim 4, characterized in that, When the sliding sleeve (401) is pushed axially to compress the spring (403), the inner wall of the sliding sleeve (401) releases the pressure on the fixed ball (404), allowing the fixed ball (404) to disengage from the annular groove, thereby achieving the separation of the connecting shaft (405) from the rotating shaft (402).

6. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle according to claim 1, characterized in that, The stirring mechanism also includes a frame (3) disposed on the top of the reactor body (8), and a motor (1) and a reducer (2) mounted on the frame (3); the motor (1) is connected to the reducer (2) in a transmission connection, and the reducer (2) is connected to the rotating shaft (402) in a transmission connection.

7. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle according to claim 1, characterized in that, The reactor body (8) is also provided with a feed pipe (7), a discharge pipe (10) and a hand hole (12).

8. A chemical enamel-lined reaction vessel with a hollow heat exchange baffle according to claim 7, characterized in that, The outer wall of the reactor body (8) is also fixed with a support plate (9), which is located below the hand hole (12).

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