Continuous esterification extrusion apparatus for synthetic ester-based drawing lubricant

Abstract

The utility model is suitable for wire drawing lubricant production technical field provides a kind of synthetic ester base wire drawing lubricant continuous esterification extruding device, including installation base, spiral extruding component and vacuum component being installed on installation base and feeding component being installed on spiral extruding component, spiral extruding component includes extruding cylinder and driving shaft and driven shaft being installed in extruding cylinder interior, feeding component includes feed bin, lid, limiting piece being installed on lid, buckle piece being installed on feed bin, vacuum component includes vacuum pump, suction pipe and exhaust pipe being installed on vacuum pump, the suction pipe is communicated with feed bin.This device solves the problem that the traditional device cannot form a vacuum environment inside the reaction tank and carry out one-step continuous esterification. After the feeding is completed, a sealed environment is formed inside the extruding cylinder, which facilitates the formation of a vacuum reaction environment under the action of the vacuum pump for subsequent reaction and reduces the generation of wastewater from water washing.

Description

Technical Field

[0001] This utility model relates to the field of wire drawing lubricant production technology, and more specifically, it relates to a continuous esterification extrusion device for synthesizing ester-based wire drawing lubricants. Background Technology

[0002] Synthetic ester-based wire drawing lubricant is a high-performance lubricant specifically designed for metal wire drawing processes. It possesses excellent lubricity, cooling properties, oxidation resistance, and long-life stability. Compared to traditional soap powder, mineral oil, or emulsions, it provides a durable lubricating film during high-speed wire drawing, reducing die wear, improving wire surface quality, extending fluid change intervals, and lowering overall costs. Synthetic ester-based wire drawing lubricant can be prepared using two different methods: a two-step method and a one-step continuous esterification method. The one-step continuous esterification method, compared to the two-step method, avoids the wastewater generated by adding solvents and washing with water.

[0003] Patent CN115746941B discloses an apparatus for preparing a synthetic ester-based drilling oil composition, including a mixing tank. A discharge pipe and a water inlet pipe are fixedly sleeved on the mixing tank. A ball valve is rotatably mounted on the discharge pipe. A first gear is fixedly mounted on the ball valve. The first gear is driven by a material discharge drive assembly. A material discharge heat insulation plate and two mixing tanks are fixedly installed inside the mixing tank. The mixing tanks are located at the upper end of the material discharge heat insulation plate.

[0004] Although the raw materials in the two mixing tanks of the above-mentioned device can be continuously heated and stirred, and the discharge of raw materials from one mixing tank does not affect the stirring and mixing of the raw materials in the other mixing tank, the one-step continuous esterification requires a vacuum system to conduct the reaction in a vacuum environment. The feed inlet of the above-mentioned device is always open to the outside atmosphere, which obviously cannot be combined with a vacuum system to create a vacuum environment inside the reaction tank. Therefore, it is impossible to carry out the one-step continuous esterification reaction in a vacuum environment to reduce wastewater generation. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a continuous esterification extrusion device for synthetic ester-based fiber lubricants that forms a sealed environment inside the extrusion cylinder after feeding, facilitating subsequent reaction under the action of a vacuum pump and reducing the generation of washing wastewater.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A continuous esterification extrusion apparatus for synthetic ester-based fiber lubricant includes a mounting base, a spiral extrusion assembly and a vacuum assembly mounted on the mounting base, and a feeding assembly mounted on the spiral extrusion assembly. The spiral extrusion assembly includes an extrusion cylinder and a drive shaft and a driven shaft mounted inside the extrusion cylinder. The feeding assembly includes a feeding bin, a cover, a limiting member mounted on the cover, and a fastening member mounted on the feeding bin. The vacuum assembly includes a vacuum pump, an extraction pipe and an exhaust pipe mounted on the vacuum pump, and the extraction pipe is connected to the feeding bin.

[0008] The present invention is further configured such that: the spiral extrusion assembly also includes an extrusion motor mounted on the mounting base, the output end of the extrusion motor is connected to a reduction gearbox, and the drive shaft is connected to the reduction gearbox.

[0009] The present invention is further configured such that: a driving gear is provided at the end of the driving shaft, a driven gear is provided at the end of the driven shaft, the driving gear and the driven gear mesh with each other, and threaded extrusion teeth are provided on the outer walls of the driving shaft and the driven shaft, the threaded extrusion teeth being located inside the extrusion cylinder.

[0010] The present invention is further configured such that: a plurality of support members are provided at the bottom of the extrusion cylinder, the support members are fixedly installed on the mounting base, and a discharge port is provided at the end of the extrusion cylinder away from the extrusion motor.

[0011] The present invention is further configured such that: the cover is rotatably mounted on the top of the feed hopper, a bushing is installed on the limiting member, a connecting member is provided between the limiting member and the snap fastener, and the connecting member is fitted inside the bushing.

[0012] The present invention is further configured such that: a connecting rod is provided through the buckle, and the two ends of the connecting rod are respectively connected to the connecting member.

[0013] The present invention is further configured such that: the vacuum pump is mounted on the top of the mounting base, and the suction pipe extends into the feed hopper.

[0014] The beneficial effects of this utility model are:

[0015] After the reactants are added, the locking and clamping components work together to secure the clamping components to the side wall of the feed hopper, thus sealing the feed hopper. A vacuum pump then draws air from inside the feed hopper through the extraction port into the extraction pipe, and finally discharges it through the exhaust pipe, creating a vacuum environment inside the feed hopper and extrusion cylinder. This ensures that the continuous esterification reaction can proceed in a vacuum environment, reducing the generation of washing wastewater during the production of the synthetic ester-based fiber lubricant. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the continuous esterification extrusion device for synthesizing ester-based fiber lubricants according to this invention.

[0018] Figure 2 for Figure 1 The front view shown.

[0019] Figure 3 for Figure 1 The left view shown.

[0020] Figure 4 for Figure 3 The sectional view showing the BB section line.

[0021] Figure 5 for Figure 1 A magnified view of a portion of region A shown.

[0022] Explanation of reference numerals in the attached drawings: 1. Mounting base; 11. Mounting plate; 12. Support frame; 13. Fixed support leg; 14. Pulley;

[0023] 2. Screw extrusion assembly; 21. Extrusion motor; 22. Gearbox; 23. Coupling; 24. Drive shaft; 25. Driven shaft; 26. Drive gear; 27. Driven gear; 28. Threaded extrusion teeth; 29. ​​Extrusion cylinder; 210. Support component; 211. Discharge port;

[0024] 3. Feeding assembly; 31. Feeding hopper; 32. Cover; 33. Limiting component; 34. Bushing; 35. Connecting component; 36. Fastening component; 37. Connecting rod;

[0025] 4. Vacuum assembly; 41. Vacuum pump; 42. Evacuation pipe; 43. Evacuation port; 44. Exhaust pipe; 45. Exhaust port. Detailed Implementation

[0026] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Please refer to Figure 1A continuous esterification extrusion apparatus for synthetic ester-based fiber lubricants includes a mounting base 1, a spiral extrusion assembly 2 and a vacuum assembly 4 mounted on the mounting base 1, and a feeding assembly 3 mounted on the spiral extrusion assembly 2. The continuous esterification extrusion apparatus for synthetic ester-based fiber lubricants can be continuously set up, and different amounts of catalyst can be added at different reaction stages to achieve a one-step continuous esterification reaction. During the reaction, raw materials (fatty acids (such as stearic acid) and alcohols (such as octadecyl alcohol) in a molar ratio of 1:1-1.2) and catalysts for different stages (such as p-toluenesulfonic acid, added at 0.5%-1%) are first added to the spiral extrusion assembly 2 through the feeding assembly 3. Then, the feeding assembly 3 is closed, creating a sealed environment in the spiral extrusion assembly 2. A vacuum is then created inside the spiral extrusion assembly 2 by the vacuum assembly 4, and the reaction proceeds under vacuum. After the reaction is complete, the product is discharged and can then enter the next stage of the extrusion apparatus for the next reaction.

[0028] Please refer to Figure 1-3 The mounting base 1 includes a horizontally arranged mounting plate 11 and a support frame 12 located at the bottom of the mounting plate 11. The spiral extrusion assembly 2 and the vacuum assembly 4 are both mounted on top of the mounting plate 11. The support frame 12 has a frame structure. A fixed support leg 13 is connected to the bottom of the support frame 12. A pulley 14 is rotatably connected to one side of the fixed support leg 13. Specifically, the pulley 14 is rotatably mounted on the support, and the movement of the device is achieved by rotating the pulley 14 relative to the support. The support is rotatably mounted on the bottom of the support frame 12, and the pulley 14 can be stored and removed by rotating the support. When the device needs to be moved, the support portion on the pulley 14 is rotated to bring the pulley 14 into contact with the ground, ensuring that the mounting base 1 can move with the pulley 14. After the movement is completed, the support portion on the pulley 14 is rotated to bring the fixed support leg 13 into contact with the ground, ensuring the stability of the device.

[0029] Please refer to Figure 1-5The spiral extrusion assembly 2 includes an extrusion cylinder 29 and a drive shaft 24 and a driven shaft 25 installed inside the extrusion cylinder 29. The spiral extrusion assembly 2 also includes an extrusion motor 21 mounted on a mounting base 1. Multiple support members 210 are provided at the bottom of the extrusion cylinder 29, fixedly connected to the outer wall of the extrusion cylinder 29, and fixedly mounted on the mounting base 1. A reduction gearbox 22 is connected to the output end of the extrusion motor 21, and the reduction gearbox 22 is mounted on the top of the mounting plate 11. The drive shaft 24 is connected to the reduction gearbox 22, and a coupling 23 is provided between the output end of the reduction gearbox 22 and the drive shaft 24, connecting to both the reduction gearbox 22 and the drive shaft 24 respectively. A drive gear 26 is provided at the end of the drive shaft 24, and a driven gear 27 is provided at the end of the driven shaft 25. The drive gear 26 and the driven gear 27 mesh with each other. The extrusion motor 21 can drive the drive shaft 24 to rotate. During the rotation of the drive shaft 24, the meshing between the drive gear 26 and the driven gear 27 synchronously drives the driven shaft 25 to rotate. The outer walls of the drive shaft 24 and driven shaft 25 are provided with threaded extrusion teeth 28. The threaded extrusion teeth 28 on the drive shaft 24 and driven shaft 25 rotate in opposite directions and are located inside the extrusion cylinder 29. The end of the extrusion cylinder 29 away from the extrusion motor 21 has a discharge port 211. During the rotation of the drive shaft 24 and driven shaft 25, the threaded extrusion teeth 28 rotate synchronously, moving towards the discharge port 211, thereby ensuring that the raw materials inside the extrusion cylinder 29 are fully mixed and reacted. During the reaction, the discharge port 211 is closed to ensure that the raw materials are fully mixed and that the reaction proceeds smoothly. After the reaction is completed, the discharge port 211 is opened, and the reaction product can be extruded from the discharge port 211 under the action of the threaded extrusion teeth 28 during the continuous rotation of the drive shaft 24 and driven shaft 25, thus completing the discharge. To ensure the smooth progress of each stage of the continuous esterification reaction, a forced circulation pump can be added at the discharge port 211 to ensure that the reaction can proceed fully.

[0030] Please refer to Figure 1-5The feeding assembly 3 includes a feeding bin 31, a cover 32, a limiting member 33 mounted on the cover 32, and a latching member 36 mounted on the feeding bin 31. The cover 32 is rotatably mounted on the top of the feeding bin 31; specifically, the cover 32 and the feeding bin 31 are connected by a hinge. The limiting member 33 is fixedly connected to the top of the cover 32, and a bushing 34 is mounted on the limiting member 33. The bushing 34 has a hollow structure. A connecting member 35 is provided between the limiting member 33 and the latching member 36. The connecting member 35 passes through the bushing 34 in the middle and can rotate relative to the bushing 34. Springs are provided at both ends of the connecting member 35, and the resulting elastic force provides elasticity during the latching process, facilitating the closing and opening of the cover 32. The snap-fit ​​component 36 is installed on the side wall of the feed hopper 31. The snap-fit ​​component 36 has a protrusion, and the side wall of the feed hopper 31 has a slot. By pressing the snap-fit ​​component 36, the protrusion can be inserted into the slot, completing the snap-fit ​​between the snap-fit ​​component 36 and the feed hopper 31. A connecting rod 37 is threaded through the snap-fit ​​component 36 and is fixedly connected to the snap-fit ​​component 36. Both ends of the connecting rod 37 are fixedly connected to the connecting piece 35. When adding raw materials, the snap-fit ​​component 36 is pried open to separate it from the side wall of the feed hopper 31. The connecting rod 37 rotates synchronously with the snap-fit ​​component 36. During the rotation of the connecting rod 37, the portion of the connecting piece 35 that is fitted into the bushing 34 also rotates, thereby opening the cover 32. After the raw materials are added, the snap-fit ​​component 36 is snapped back onto the side wall of the feed hopper 31 to seal the feed hopper 31. Furthermore, to ensure the airtightness between the cover 32 and the feed hopper 31, a sealing gasket can be added between the feed hopper 31 and the cover 32.

[0031] Please refer to Figure 1-5 The vacuum assembly 4 includes a vacuum pump 41, an extraction pipe 42 mounted on the vacuum pump 41, and an exhaust pipe 44. The vacuum pump 41 is mounted on the top of the mounting base 1. The extraction pipe 42 is located on the side closer to the feed chamber 31, and the exhaust pipe 44 is located on the side farther from the feed chamber 31. The extraction pipe 42 communicates with the feed chamber 31 and extends into the interior of the feed chamber 31. An extraction port 43 is provided at the end of the extraction pipe 42, and an exhaust port 45 is provided at the end of the exhaust pipe 44. When the vacuum pump 41 operates, it draws air from inside the feed chamber 31 through the extraction port 43 into the extraction pipe 42, and finally discharges it through the exhaust pipe 44 to the exhaust port 45, thereby creating a vacuum environment inside the feed chamber 31 and the extrusion cylinder 29.

[0032] Specifically, before the continuous esterification reaction, the locking piece 36 is pried open to separate it from the side wall of the feed chamber 31. The portion of the connecting piece 35 fitted into the bushing 34 rotates synchronously, thereby opening the cover 32. Then, the required raw materials and catalyst are added to the extrusion cylinder 29 through the feed chamber 31, while the outlet 211 is closed to ensure thorough mixing of the raw materials and smooth reaction. After the raw materials are added, the locking piece 36 is re-locked onto the side wall of the feed chamber 31. The vacuum pump 41 operates, drawing air from inside the feed chamber 31 through the extraction port 43 into the extraction pipe 42, and finally discharging it through the exhaust pipe 44 to the exhaust port 45, thus creating a vacuum environment inside the feed chamber 31 and the extrusion cylinder 29. Finally, the extrusion motor 21 drives the drive shaft 24 to rotate. During the rotation of the drive shaft 24, the meshing between the drive gear 26 and the driven gear 27 synchronously drives the driven shaft 25 to rotate. During the rotation of the drive shaft 24 and driven shaft 25, the threaded extrusion teeth 28 rotate synchronously, allowing the raw materials inside the extrusion cylinder 29 to be fully mixed and reacted. After the reaction is completed, the discharge port 211 is opened, and the reaction product can be extruded from the discharge port 211 under the action of the threaded extrusion teeth 28 during the continuous rotation of the drive shaft 24 and driven shaft 25, thus completing the discharge.

[0033] After the reaction raw materials are added, the retaining member 33 and the locking member 36 cooperate to lock the locking member 36 onto the side wall of the feed hopper 31, thereby sealing the feed hopper 31. Then, the air inside the feed hopper 31 is drawn into the exhaust pipe 42 through the exhaust port 43 by the vacuum pump 41, and finally discharged through the exhaust pipe 44, forming a vacuum environment inside the feed hopper 31 and the extrusion cylinder 29. This ensures that the continuous esterification reaction can be carried out in a vacuum reaction environment, reducing the generation of washing wastewater during the production of synthetic ester-based fiber lubricants.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants, characterized in that: The assembly includes a mounting base (1), a spiral extrusion assembly (2) and a vacuum assembly (4) mounted on the mounting base (1), and a feeding assembly (3) mounted on the spiral extrusion assembly (2). The spiral extrusion assembly (2) includes an extrusion cylinder (29) and a drive shaft (24) and a driven shaft (25) mounted inside the extrusion cylinder (29). The feeding assembly (3) includes a feeding bin (31), a cover (32), a limiting member (33) mounted on the cover (32), and a fastener (36) mounted on the feeding bin (31). The vacuum assembly (4) includes a vacuum pump (41), an air extraction pipe (42) mounted on the vacuum pump (41), and an exhaust pipe (44). The air extraction pipe (42) is connected to the feeding bin (31).

2. The continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants according to claim 1, characterized in that: The spiral extrusion assembly (2) also includes an extrusion motor (21) mounted on the mounting base (1), the output end of the extrusion motor (21) is connected to a reduction gearbox (22), and the drive shaft (24) is connected to the reduction gearbox (22).

3. The continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants according to claim 2, characterized in that: The drive shaft (24) is provided with a drive gear (26) at its end, and the driven shaft (25) is provided with a driven gear (27) at its end. The drive gear (26) and the driven gear (27) mesh with each other. The outer walls of the drive shaft (24) and the driven shaft (25) are provided with threaded extrusion teeth (28), and the threaded extrusion teeth (28) are located inside the extrusion cylinder (29).

4. The continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants according to claim 3, characterized in that: The bottom of the extrusion cylinder (29) is provided with multiple support members (210), which are fixedly installed on the mounting base (1). The end of the extrusion cylinder (29) away from the extrusion motor (21) is provided with a discharge port (211).

5. The continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants according to claim 1, characterized in that: The cover (32) is rotatably mounted on the top of the feed hopper (31). A bushing (34) is installed on the limiting member (33). A connector (35) is provided between the limiting member (33) and the buckle member (36). The connector (35) is fitted inside the bushing (34).

6. The continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants according to claim 5, characterized in that: A connecting rod (37) is provided through the buckle (36), and the two ends of the connecting rod (37) are respectively connected to the connector (35).

7. The continuous esterification extrusion apparatus for synthesizing ester-based fiber lubricants according to claim 1, characterized in that: The vacuum pump (41) is mounted on top of the mounting base (1), and the suction pipe (42) extends into the feed hopper (31).

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