Saponification reaction kettle for producing sodium alkyl hydroxamic acid

Abstract

The utility model relates to the technical field of reaction kettles, in particular to a saponification reaction kettle for producing sodium alkyl hydroxamic acid, which comprises a suspended cover, a kettle body, a stirring motor and a scraping mechanism, and the scraping mechanism comprises a sleeve shaft, a stirring plate, a connecting rod, a shifting sleeve and a shifting cylinder. In the scraping mechanism, a sleeve shaft is fixed to the rotating shaft, a stirring plate is provided with a scraping strip, a connecting rod is hinged to be deformable, and a shifting sleeve is matched with a shifting air cylinder. When scraping is needed, the shifting cylinder drives the shifting sleeve to slide downwards, the scraping strip is attached to the inner wall of the kettle body to remove impurities, and when scraping is not needed, the shifting sleeve moves upwards to drive the scraping strip to be away from the inner wall, and friction loss is reduced. According to the reaction kettle, through the scraping mechanism, the cleanness in the kettle can be ensured, the reaction effect and the product quality are improved, the abrasion of parts can be reduced, the service life of equipment is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically a saponification reaction vessel for the production of sodium alkyl hydroxamic acid. Background Technology

[0002] A reaction vessel is a comprehensive reaction container widely used in laboratories and various chemical reaction processes, including heating, evaporation, cooling, and material mixing. The production of sodium alkyl hydroxamic acid requires the use of a reaction vessel for saponification.

[0003] Utility model patent CN213222163U discloses a saponification reactor. This invention addresses the problem in existing saponification reactors where the saponified material adhering to the inner wall cannot be scraped off during stirring, resulting in poor stirring, incomplete reaction, and reduced product quality and yield. The reactor has bases on both sides of its bottom, with supports at the bottom of each base. Three supports are provided, each with a base and a support leg on one side, the other end of which is fixedly connected to the support. A discharge port with a valve is located at the bottom of the reactor. A reactor top cover is installed on top of the reactor top cover, and a frame is positioned directly above it. The frame has an internal connection port with a stirring shaft installed thereon. Stirring blades are installed at the bottom of the stirring shaft, and scrapers are installed on both sides of the stirring shaft's surface.

[0004] During use, the scraper of the saponification reactor is constantly in frictional contact with the inner wall of the reactor, causing excessive wear on both the scraper and the inner wall, resulting in a decrease in cleaning effect, reduced service life of the scraper and the reactor, and increased equipment maintenance costs. In view of this, we propose a saponification reactor for the production of sodium alkyl hydroxamic acid. Utility Model Content

[0005] The purpose of this invention is to provide a saponification reactor for the production of sodium alkyl hydroxamate, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A saponification reactor for the production of sodium alkyl hydroxamic acid includes a suspended cover, a reactor body installed at the bottom end of the suspended cover, a stirring motor fixed at the center of the top end of the suspended cover, a rotating shaft coaxially connected to the end of the output shaft of the stirring motor, the bottom end of the rotating shaft extending into the reactor body and fixed with a stirring paddle, and a cleaning mechanism provided below the suspended cover, the cleaning mechanism including a sleeve shaft, a pair of stirring plates, a connecting rod, a pry sleeve, and a pry cylinder;

[0008] The sleeve is fitted onto and fixed to the outside of the rotating shaft;

[0009] The stirring plate is parallel to the sleeve shaft, and a scraper is installed at the outer edge of the stirring plate;

[0010] The two connecting rods are fixed in parallel between the sleeve shaft and the stirring plate. Each connecting rod includes a first fixed rod, a second fixed rod, and a connecting rod. The first fixed rod is fixedly connected to the sleeve shaft, the second fixed rod is fixedly connected to the stirring plate, and the connecting rod is hinged between the first fixed rod and the second fixed rod.

[0011] The pry sleeve is fitted onto the top of the sleeve shaft and is slidably connected to the sleeve shaft. Two pry rings are fixed to the top of the pry sleeve.

[0012] The actuating cylinder is fixed to the top of the suspended cover. The piston rod of the actuating cylinder is coaxially connected to a vertical shaft. The bottom end of the vertical shaft is fixed with a shift fork. The end of the shift fork extends between the two shift rings and is sleeved on the outside of the sleeve shaft.

[0013] A lever is hinged between the lever sleeve and the second fixing rod located at the top.

[0014] Preferably, support legs are fixed around the perimeter of the suspended cover. The bottom ends of the support legs extend downward and abut against the bottom surface. The height of the support legs is at least twice that of the vessel body.

[0015] In this configuration, the support legs provide stable support for the suspended cover, and their height facilitates the disassembly of the vessel body, making equipment cleaning, maintenance, and repair convenient.

[0016] Preferably, a protruding edge is provided at the outer peripheral edge of the top of the vessel body, and the protruding edge is attached to the bottom surface of the suspended cover and fixedly connected by bolts;

[0017] In this configuration, the connection between the protruding edge and the suspended cover via bolts facilitates easy assembly and disassembly of the vessel body and the suspended cover, making equipment maintenance, cleaning, and internal parts replacement convenient.

[0018] Preferably, an installation groove is provided on the surface of the stirring plate near the inner wall of the vessel, and a protrusion is provided on the inner end surface of the scraper. The protrusion extends into the installation groove and is fixed to the stirring plate with bolts.

[0019] In this design, the bolt fixing method that matches the mounting groove and the convex strip facilitates the installation and disassembly of the scraper strip, makes it easy to replace worn scraper strips, and ensures the cleaning effect.

[0020] Preferably, a first hinge seat is provided at the top position of the uppermost second fixed rod, and the bottom end of the lever is hinged to the first hinge seat;

[0021] In this configuration, the first hinge seat provides a hinge fulcrum for the lever, ensuring stable lever transmission and enabling precise adjustment of the scraper position.

[0022] Preferably, the shift ring is fixed to the outside of the shift sleeve, a shift groove is formed between the two shift rings, and the end of the shift fork passes through the shift groove;

[0023] In this configuration, the dial ring and dial groove work together to ensure that the dial fork can accurately drive the dial sleeve, thus guaranteeing the accuracy and stability of the cleaning mechanism operation.

[0024] Preferably, a second hinge seat is fixed on the outer surface of the bottom of the lever, and the top end of the lever is hinged to the second hinge seat;

[0025] In this configuration, the second hinge seat works in conjunction with the lever to further enhance transmission stability and ensure reliable adjustment of the scraper position.

[0026] Preferably, a pair of limiting posts are fixed on the outer surface of the top of the sleeve shaft. The two limiting posts are arranged along the axial direction of the sleeve shaft. The pry bar is located between the two limiting posts. When the pry bar moves downward along the axial direction of the sleeve shaft and abuts against the lower limiting post, the connecting rod is horizontal. At this time, the outer end of the scraper abuts against the inner wall of the vessel. When the pry bar moves upward along the axial direction of the sleeve shaft and abuts against the upper limiting post, the connecting rod is bent. At this time, the outer end of the scraper moves away from the inner wall of the vessel.

[0027] In this setting, the limiting post restricts the movement range of the sleeve, precisely controls the contact and separation between the scraper and the inner wall of the vessel, ensures stable operation of the cleaning mechanism, and reduces component wear.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] This saponification reactor for sodium alkyl hydroxamic acid production features a cleaning mechanism. During the saponification reaction, when cleaning of the reactor's inner wall is required, a cylinder drives a vertical shaft and a fork downwards, causing a sliding sleeve to slide downwards along the shaft. The sleeve then pushes a second fixed rod via a lever, bringing the connecting rod horizontal. The scraper blades on the stirring plate closely adhere to the reactor's inner wall. As the shaft rotates, the scraper removes reactants and impurities adhering to the reactor's inner wall, ensuring a clean reactor interior and preventing material residue from affecting the reaction effect and product quality. Conversely, when cleaning is not required... When cleaning is required, the cylinder is activated to pull the fork upwards. The fork drives the sleeve upwards, and the sleeve pulls the second fixed rod through the lever, causing the connecting rod to bend. The scraper moves away from the inner wall of the reactor along with the stirring plate, effectively preventing continuous friction between the scraper and the inner wall of the reactor. This reduces wear and tear on both the scraper and the reactor, extends their service life, reduces equipment maintenance costs and replacement frequency, and avoids the problem of reduced cleaning effect due to excessive wear. This ensures the long-term stable operation of the cleaning mechanism and the normal use of the reactor. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the suspended cover in this utility model;

[0032] Figure 3 This is a schematic diagram of the overall structure of the cleaning mechanism in the cleaning state of this utility model;

[0033] Figure 4 This is a schematic diagram of the overall structure of the cleaning mechanism in the non-cleaning state of this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the vessel body in this utility model;

[0035] Figure 6 This is a schematic diagram of the cleaning mechanism in this utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the stirring plate in this utility model;

[0037] Figure 8 This is a schematic diagram of the connecting rod in this utility model;

[0038] Figure 9 This is a cross-sectional view of the lever sleeve in this utility model;

[0039] The meanings of the labels in the diagram are as follows:

[0040] 1. Suspended cover; 11. Support legs; 12. Stirring motor; 13. Rotating shaft; 131. Stirring paddle;

[0041] 2. Kettle body; 21. Protruding edge;

[0042] 3. Scraping mechanism; 31. Sleeve shaft; 32. Stirring plate; 321. Scraper blade; 3211. Raised strip; 323. Mounting groove; 33. Connecting rod; 331. First fixing rod; 332. Second fixing rod; 3321. First hinge seat; 333. Connecting rod; 34. Pulley sleeve; 341. Pulley ring; 342. Pulley groove; 343. Second hinge seat; 35. Pulley cylinder; 351. Vertical shaft; 352. Pulley fork; 36. Pulley rod; 37. Limiting post. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0044] Please see Figures 1-9 A saponification reactor for the production of sodium alkyl hydroxamic acid includes a suspended cover 1, a reactor body 2 installed at the bottom end of the suspended cover 1, and a cleaning and scraping mechanism 3 provided below the suspended cover 1.

[0045] like Figures 1-5 As shown, a stirring motor 12 is fixed at the center of the top of the suspended cover 1. A rotating shaft 13 is coaxially connected to the end of the output shaft of the stirring motor 12. The bottom end of the rotating shaft 13 extends into the vessel body 2 and is fixed with a stirring paddle 131. Support legs 11 are fixed around the perimeter of the suspended cover 1. The bottom ends of the support legs 11 extend downwards and abut against the bottom surface. The height of the support legs 11 is at least twice that of the vessel body 2. A protruding edge 21 is provided on the outer periphery of the top of the vessel body 2. The protruding edge 21 is attached to the bottom surface of the suspended cover 1 and fixed with bolts. The vessel body 2 can be removed from the suspended cover 1 by removing the bolts fixing the protruding edge 21 for cleaning and maintenance. When the stirring motor 12 is working, it drives the rotating shaft 13 and the stirring paddle 131 to rotate, which can fully mix the reactants in the vessel body 2, improve the saponification reaction efficiency, and facilitate the disassembly of the vessel body 2 by the operator. This allows for deep cleaning and maintenance of the interior of the vessel body 2, ensuring cleanliness, extending service life, and facilitating the inspection of internal parts.

[0046] like Figure 6 As shown, the cleaning mechanism 3 includes a sleeve shaft 31, a pair of stirring plates 32, a connecting rod 33, a pry sleeve 34, and a pry cylinder 35.

[0047] like Figure 3 , Figure 4 and Figure 6As shown, the sleeve 31 is fitted and fixed on the outside of the rotating shaft 13. By fixing the sleeve 31 to the rotating shaft 13, the cleaning mechanism 3 can rotate synchronously with the rotating shaft 13.

[0048] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the stirring plate 32 is parallel to the sleeve shaft 31, and a scraper 321 is installed at the outer edge of the stirring plate 32. An installation groove 323 is provided on the surface of the stirring plate 32 near the inner wall of the vessel body 2. A protrusion 3211 is provided on the inner end surface of the scraper 321. The protrusion 3211 extends into the installation groove 323 and is fixed to the stirring plate 32 with bolts. Through the provided protrusion 3211, the scraper 321 can be easily installed on the stirring plate 32 for replacement and maintenance.

[0049] like Figure 3 , Figure 4 , Figure 6 and Figure 8 As shown, two connecting rods 33 are fixed in parallel between the sleeve shaft 31 and the stirring plate 32. Each connecting rod 33 includes a first fixed rod 331, a second fixed rod 332, and a connecting rod 333. The first fixed rod 331 is fixedly connected to the sleeve shaft 31, the second fixed rod 332 is fixedly connected to the stirring plate 32, and the connecting rod 333 is hinged between the first fixed rod 331 and the second fixed rod 332. Under the action of the connecting rod 333, the two connecting rods 33 form a parallelogram hinge structure. By controlling the hinge state of the connecting rods 33, the distance between the stirring plate 32 and the scraper 321 relative to the inner wall of the vessel 2 can be adjusted equally, thereby controlling the contact and separation of the scraper 321 with the inner wall of the vessel and meeting the cleaning requirements under different working conditions.

[0050] like Figure 3 , Figure 4 , Figure 6 and Figure 9 As shown, the pry sleeve 34 is fitted onto the top of the sleeve shaft 31 and slidably connected to the sleeve shaft 31. Two pry rings 341 are fixed to the top of the pry sleeve 34. The actuating cylinder 35 is fixed to the top of the suspended cover 1. The piston rod of the actuating cylinder 35 is coaxially connected to a vertical shaft 351. A pry fork 352 is fixed to the bottom end of the vertical shaft 351. The pry rings 341 are fixed to the outside of the pry sleeve 34. A groove 342 is formed between the two pry rings 341. The end of the pry fork 352 passes through the groove 342 and extends between the two pry rings 341 and is fitted onto the outside of the sleeve shaft 31. Under the action of the pry fork 352, while the actuating cylinder 35 drives the pry sleeve 34 to slide along the sleeve shaft 31 through the vertical shaft 351 and the pry fork 352, the pry fork 352 does not affect the rotation of the pry sleeve 34 driven by the sleeve shaft 31, so that the pry sleeve 34 can still be actuated by the pry fork 352 when rotating.

[0051] like Figure 3 , Figure 4 , Figure 6 and Figure 9 As shown, a lever 36 is hinged between the pry sleeve 34 and the uppermost second fixed rod 332. A first hinge seat 3321 is provided at the top of the uppermost second fixed rod 332. The bottom end of the lever 36 is hinged to the first hinge seat 3321. A second hinge seat 343 is fixed on the outer surface of the bottom of the pry sleeve 34, and the top end of the lever 36 is hinged to the second hinge seat 343. The lever 36 and the two hinge seats constitute a transmission structure. Under the connection of the lever 36, the linear movement of the pry sleeve 34 along the axis of the sleeve shaft 31 will pull the second fixed rod 332 through the lever 36, thereby causing the second fixed rod 332 to drive the stirring plate 32 to move horizontally.

[0052] like Figure 6 As shown, a pair of limiting posts 37 are fixed on the outer surface of the top of the sleeve shaft 31. The two limiting posts 37 are arranged along the axial direction of the sleeve shaft 31, and the pry sleeve 34 is located between the two limiting posts 37. When the pry sleeve 34 moves downward along the axial direction of the sleeve shaft 31 and abuts against the lower limiting post 37, the connecting rod 33 is horizontal, and the outer end of the scraper 321 abuts against the inner wall of the vessel body 2. When the pry sleeve 34 moves upward along the axial direction of the sleeve shaft 31 and abuts against the upper limiting post 37, the connecting rod 33 is bent, and the outer end of the scraper 321 moves away from the inner wall of the vessel body 2. The limiting posts 37 provide a limit for the movement of the pry sleeve 34, ensuring that the scraper 321 is accurately positioned in both cleaning and non-cleaning states, preventing damage to components due to excessive movement, and improving the stability and reliability of the cleaning mechanism 3.

[0053] It is worth noting that the stirring motor 12 involved in this utility model is a conventional technology and will not be described in detail here.

[0054] In this embodiment, when the inner wall of the saponification reactor for the production of sodium alkyl hydroxamic acid needs to be cleaned, the vertical shaft 351 and the fork 352 are driven downward by the actuating cylinder 35. This causes the actuating sleeve 34 to slide downward along the sleeve shaft 31. The actuating sleeve 34 pushes the second fixed rod 332 through the actuating rod 36, making the connecting rod 33 horizontal. The scraper 321 on the stirring plate 32 fits tightly against the inner wall of the reactor. As the rotating shaft 13 rotates, the scraper 321 removes the reactants and impurities adhering to the inner wall of the reactor, ensuring the cleanliness of the reactor interior.

[0055] When cleaning is not required, the cylinder 35 pulls the fork 352 upward, which in turn moves the sleeve 34 upward. The sleeve 34 pulls the second fixed rod 332 via the lever 36, causing the connecting rod 33 to bend. The scraper 321 moves away from the inner wall of the reactor along with the stirring plate 32, preventing continuous friction between the scraper 321 and the inner wall of the reactor. This reduces wear and tear on the scraper 321 and the inner wall of the reactor, extends the service life of the scraper 321 and the reactor, reduces equipment maintenance costs and replacement frequency, and also avoids the problem of reduced cleaning effect due to excessive wear.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A saponification reactor for the production of sodium alkyl hydroxamic acid, characterized in that: The utility model provides a kind of kettle, including overhanging cover (1), the bottom end of the overhanging cover (1) is equipped with kettle body (2), the top center of the overhanging cover (1) is fixed with stirring motor (12), the output shaft end of the stirring motor (12) is coaxially connected with rotating shaft (13), the bottom end of the rotating shaft (13) extends into the kettle body (2) and is fixed with stirring paddle (131), the lower of the overhanging cover (1) is equipped with clean scraping mechanism (3), the clean scraping mechanism (3) includes sleeve shaft (31), a pair of stirring plate (32), connecting rod (33), push sleeve (34) and push cylinder (35); The sleeve shaft (31) is sleeved and fixed on the outside of the rotating shaft (13); The stirring plate (32) is parallel to the sleeve shaft (31), and the outer end edge of the stirring plate (32) is provided with a scraping strip (321). Two connecting rods (33) are fixed between the sleeve shaft (31) and the stirring plate (32) in parallel, and the connecting rod (33) comprises a first fixed rod (331), a second fixed rod (332) and a connecting rod (333). The first fixed rod (331) is fixedly connected with the sleeve shaft (31), the second fixed rod (332) is fixedly connected with the stirring plate (32), and the connecting rod (333) is hingedly connected between the first fixed rod (331) and the second fixed rod (332). The push sleeve (34) is sleeved on the top of the sleeve shaft (31) and is slidably connected with the sleeve shaft (31), and two push rings (341) are fixed on the top of the push sleeve (34). The push cylinder (35) is fixed on the top end of the overhanging cover (1), a vertical shaft (351) is coaxially connected to the end of the piston rod of the push cylinder (35), a yoke (352) is fixed to the bottom end of the vertical shaft (351), and the end of the yoke (352) extends into between the two push rings (341) and is sleeved on the outside of the sleeve shaft (31). A push rod (36) is hingedly connected between the push sleeve (34) and the uppermost second fixed rod (332).

2. The saponification reactor for sodium alkylhydroxamic acid production according to claim 1, characterized in that: Supporting legs (11) are fixed at positions around the overhanging cover (1), the bottom end of the supporting leg (11) extends downward and abuts against the bottom surface, and the height of the supporting leg (11) is at least twice the height of the kettle body (2).

3. The saponification reactor for sodium alkylhydroxamic acid production according to claim 1, characterized in that: A raised edge (21) is arranged at the outer circumferential edge of the top end of the kettle body (2), the raised edge (21) is fitted with the bottom surface of the overhanging cover (1) and is fixedly connected by bolts.

4. The saponification reactor for sodium alkylhydroxamic acid production according to claim 1, characterized in that: An installation groove (323) is arranged on the surface of the stirring plate (32) close to the inner wall of the kettle body (2), a protruding strip (3211) is arranged on the inner side surface of the scraping strip (321), the protruding strip (3211) extends into the installation groove (323) and is fixed on the stirring plate (32) by bolts.

5. The saponification reactor for sodium alkylhydroxamic acid production according to claim 1, characterized in that: A first hinge seat (3321) is arranged at the top position of the uppermost second fixed rod (332), and the bottom end of the push rod (36) is hingedly connected with the first hinge seat (3321).

6. The saponification reactor for sodium alkylhydroxamic acid production according to claim 1, characterized in that: The two said dial rings (341) are fixed outside the dial sleeve (34), and a dial slot (342) is formed between the two said dial rings (341), and the end of the dial fork (352) passes through the dial slot (342).

7. The saponification reactor according to claim 1, characterized in that: A second hinge seat (343) is fixed on the outer surface of the bottom of the dial sleeve (34), and the top end of the dial rod (36) is hinged with the second hinge seat (343).

8. The saponification reactor according to claim 1, characterized in that: A pair of limiting columns (37) are further fixed on the outer surface of the top of the sleeve shaft (31), the two said limiting columns (37) are arranged along the axial direction of the sleeve shaft (31), the dial sleeve (34) is located between the two said limiting columns (37), when the dial sleeve (34) moves downward along the axial direction of the sleeve shaft (31) and abuts against the lower limiting column (37), the connecting rod (33) is in a horizontal state, at this time, the outer end of the scraping strip (321) abuts against the inner wall of the kettle body (2), when the dial sleeve (34) moves upward along the axial direction of the sleeve shaft (31) and abuts against the upper limiting column (37), the connecting rod (33) is in a bent state, at this time, the outer end of the scraping strip (321) is away from the inner wall of the kettle body (2).

Images