An extraction tower for prepolymerization of nylon 6 concentrated liquid

Abstract

The utility model relates to the field of chemical separation equipment, and discloses an extraction tower for prepolymerization of nylon 6 concentrated liquid, including an extraction tower body, a tower cover fixedly connected to the upper end of the extraction tower body, a motor fixedly connected to the middle of the upper end of the tower cover, a rotating shaft fixedly connected to the output end of the motor, a plurality of rotating disks fixedly connected to the rotating shaft equidistantly along the axial direction, a material collection disk is arranged between every two rotating disks, a plurality of baffles fixedly connected to the upper surface of the rotating disk at equal distances, the outer ends of the baffles fixedly connected to the inner wall of the rotating ring, and a cleaning mechanism fixedly connected to the outer side of the rotating ring. In the utility model, the mixing time of the material and the extract can be extended by the coordinated use of the rotating disk, the baffles and the material collection disk, the material collection disk can prevent the extract from mixing back, and achieve the effect of layered extraction of the material, and the rotating ring drives the cleaning mechanism to rotate, so as to quickly clean the inner wall of the extraction tower.

Description

Technical Field

[0001] The utility model relates to the field of chemical separation equipment, in particular to an extraction tower for prepolymerization of nylon 6 concentrated liquid. Background Art

[0002] Nylon 6, also known as nylon 6, is a synthetic fiber that is not only high in strength, wear-resistant and heat-resistant, but also has good ductility and chemical corrosion resistance. It is widely used in various textiles, industrial ropes, and automotive fields. During the preparation process, nylon 6 contains impurities such as small molecular polymers, so an extraction tower is used for purification.

[0003] In the existing extraction tower, when the material enters the extraction tower, it is difficult to fully extract and purify the material because the material falls too fast in the extraction liquid and the temperature of the preheated extraction liquid will decrease when entering the tower body. In addition, the upper and lower layers of the extraction liquid are prone to axial back mixing, and the inner wall of the extraction tower is also difficult to clean. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art that the material falls too fast in the extraction liquid, the temperature of the preheated extraction liquid will be reduced when entering the tower body, the upper and lower layers of the extraction liquid are prone to axial back mixing, it is difficult to fully extract and purify the material, and the inner wall of the extraction tower is not easy to clean, and an improved extraction tower for prepolymerization of nylon 6 concentrated liquid is provided.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an extraction tower for prepolymerization of nylon 6 concentrated liquid, comprising an extraction tower body, a tower cover is fixedly connected to the upper end of the extraction tower body, a motor is fixedly connected to the middle of the upper end of the tower cover, a control panel is fixedly connected to the middle of the front end of the extraction tower body, a rotating shaft is fixedly connected to the output end of the motor, the bottom end of the rotating shaft is rotatably connected to a fixed ring, the fixed ring is fixedly connected to a cross fixing plate, the cross fixing plate is fixedly connected to the extraction tower body, a plurality of rotating disks are fixedly connected to the rotating shaft at equal intervals along the axial direction, a material collecting disk is arranged between every two rotating disks, a plurality of baffles are fixedly connected to the upper surface of the rotating disk at equal intervals, the outer ends of the baffles are fixedly connected to the inner wall of the rotating ring, and a cleaning mechanism is fixedly connected to the outer side of the rotating ring.

[0006] As a further description of the above technical solution:

[0007] The cleaning mechanism includes a sleeve, a connecting rod is slidably connected inside the sleeve, the adjacent end of the connecting rod is fixedly connected to one end of a spring, the distal end of the connecting rod is fixedly connected to a cleaning brush, the other end of the spring is fixedly connected to one side of the corresponding sleeve, and the other side of the sleeve is fixedly connected to a rotating ring.

[0008] As a further description of the above technical solution: a feed inlet is provided on one side of the upper end of the tower cover, and a discharge pipe is fixedly connected to the middle position of the bottom of the extraction tower body.

[0009] As a further description of the above technical solution: a liquid outlet is arranged at the middle and upper part of the rear end of the extraction tower body, and a liquid inlet is arranged at the middle and lower part of the rear end of the extraction tower body.

[0010] As a further description of the above technical solution: four legs are equidistantly and fixedly connected to the bottom edge of the extraction tower body.

[0011] As a further description of the above technical solution: a strip-shaped water level monitoring window is provided on one side of the extraction tower body.

[0012] As a further description of the above technical solution: an extraction tower cavity is opened between the inner and outer walls of the extraction tower body, and a plurality of heating tubes are arranged in the extraction tower cavity. The heating tubes, the motor and the control panel are electrically connected.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, first, during the material extraction process, when the material falls onto the rotating disk, the material is scattered around and sinks from the gap between the rotating disk and the rotating ring to the material collection disk through the centrifugal force of the rotating disk. The material slowly gathers from the surroundings of the material collection disk to the middle through hole of the material collection disk and falls to the next rotating disk until the material sinks to the bottom. The baffle can fully stir the extraction liquid and the material. The material collection disk can also prevent the extraction liquids with different impurity concentrations in the upper and lower layers of the extraction tower from mixing back, so that the extraction liquids with different impurity concentrations can effectively extract the material in layers during the sinking process of the extraction tower. The use of the rotating disk, the baffle, and the material collection disk not only prolongs the mixing time of the material and the extraction liquid, effectively preventing the accumulation of materials, but also the heating tube can keep the extraction liquid entering the extraction tower at a suitable temperature, so that the extraction liquid can extract the material more fully.

[0015] 2. In the utility model, in the process of increasing the motor speed, as the centrifugal force increases, the spring in the cleaning mechanism gradually stretches, the cleaning brush contacts and fits the inner wall of the extraction tower, and the rotating ring drives the cleaning mechanism to rotate, thereby quickly cleaning the inner wall of the extraction tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of an extraction tower for prepolymerization of nylon 6 concentrated liquid proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional structure diagram of an extraction tower for prepolymerization of nylon 6 concentrated liquid proposed by the utility model;

[0018] Figure 3 This is a partial structural schematic diagram of an extraction tower for prepolymerization of nylon 6 concentrated liquid proposed by the utility model;

[0019] Figure 4 The utility model provides a schematic diagram of the cleaning structure of an extraction tower for prepolymerization of nylon 6 concentrated liquid.

[0020] Legend:

[0021] 1. Extraction tower body; 2. Tower cover; 3. Motor; 4. Feed inlet; 5. Control panel; 6. Liquid outlet; 7. Liquid inlet; 8. Support legs; 9. Discharge pipe; 10. Water level monitoring window; 11. Extraction tower cavity; 12. Cross fixing plate; 13. Fixing ring; 14. Material collecting plate; 15. Heating tube; 16. Rotating plate; 17. Baffle bar; 18. Rotating ring; 19. Cleaning mechanism; 191. Cleaning brush; 192. Connecting rod; 193. Spring; 194. Sleeve; 20. Rotating shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-4 The utility model provides an embodiment: an extraction tower for prepolymerization of nylon 6 concentrated liquid, comprising an extraction tower body 1, a tower cover 2 is fixedly connected to the upper end of the extraction tower body 1, a motor 3 is fixedly connected to the middle of the upper end of the tower cover 2, a control panel 5 is fixedly connected to the middle of the front end of the extraction tower body 1, a rotating shaft 20 is fixedly connected to the output end of the motor 3, the bottom end of the rotating shaft 20 is rotatably connected to the fixing ring 13, the fixing ring 13 is fixedly connected to a cross fixing plate 12, the cross fixing plate 12 is fixedly connected to the extraction tower body 1, and the rotating shaft 20 is fixedly connected to a plurality of rotating disks 16 equidistantly along the axial direction, and between every two rotating disks 16 A material collecting plate 14 is provided, and a plurality of baffles 17 are fixedly connected to the upper surface of the rotating plate 16 at equal intervals. The outer ends of the baffles 17 are fixedly connected to the inner wall of the rotating ring 18. A cleaning mechanism 19 is fixedly connected to the outer side of the rotating ring 18. The cleaning mechanism 19 includes a sleeve 194, and a connecting rod 192 is slidably connected in the sleeve 194. The adjacent ends of the connecting rod 192 are fixedly connected to one end of a spring 193, and the ends of the connecting rod 192 away from each other are fixedly connected to a cleaning brush 191. The other end of the spring 193 is fixedly connected to one side of the corresponding sleeve 194, and the other side of the sleeve 194 is fixedly connected to the rotating ring 18.

[0024] The motor 3 is a servo motor, and the rotation of the motor 3 is controlled by the control panel 5. During the extraction process, the motor 3 runs at a low speed. During the cleaning process, the running speed of the motor 3 is increased to increase the centrifugal force on the cleaning mechanism 19, so that the cleaning brush 191 is in full contact with the inner wall of the extraction tower body 1, thereby cleaning the inner wall of the extraction tower. During the material extraction process, the material enters the extraction tower through the feed port 4 and falls onto the rotating disk 16. The motor 3 drives the rotating shaft 20 to rotate, and the rotating shaft 20 drives the baffle bar 17 to rotate and then drives the extraction liquid to rotate and flow, so that the material and the extraction liquid are fully mixed.

[0025] Reference Figure 1-3 A feed inlet 4 is provided on one side of the upper end of the tower cover 2, a discharge pipe 9 is fixedly connected to the middle position of the bottom of the extraction tower body 1, a liquid outlet 6 is provided at the middle and upper part of the rear end of the extraction tower body 1, a liquid inlet 7 is provided at the middle and lower part of the rear end of the extraction tower body 1, four legs 8 are fixedly connected at equal intervals at the edge of the bottom side of the extraction tower body 1, a strip water level monitoring window 10 is provided on one side of the extraction tower body 1, an extraction tower cavity 11 is provided between the inner and outer walls of the extraction tower body 1, a plurality of heating tubes 15 are provided in the extraction tower cavity 11, and the heating tubes 15, the motor 3 and the control panel 5 are electrically connected.

[0026] The water level monitoring window 10 can observe the water level of the extracting liquid inside the extraction tower body 1. The liquid outlet 6 and the liquid inlet 7 can control the flow rate of the extracting liquid entering and flowing out of the extraction tower body 1 through valves, thereby controlling the water level of the extracting liquid inside the extraction tower body 1. The rotation state of the motor 3 and the switch of the heating tube 15 can be controlled through the control panel 5.

[0027] Working principle: During the material extraction process, the material enters the extraction tower through the feed port 4, and the extraction liquid is driven to flow through the rotation of the baffle 17, so that the material and the extraction liquid are fully mixed. When the material falls onto the rotating disk 16, the material is scattered around and sinks from the gap between the rotating disk 16 and the rotating ring 18 to the material collection disk 14 through the centrifugal force of the rotating disk 16. The material slowly gathers from the surroundings of the material collection disk 14 to the middle through hole of the material collection disk 14 and falls to the next rotating disk 16 until the material sinks to the bottom. The heating tube 15 is controlled by the control panel 5 to work so that the extraction liquid can be continuously heated. The material collection disk 14 can prevent the extraction liquids with different impurity concentrations in the upper and lower layers of the extraction tower from mixing. During the cleaning process, when the speed of the motor 3 is increased, as the centrifugal force increases, the spring 193 in the cleaning mechanism 19 gradually stretches, the cleaning brush 191 contacts and fits with the inner wall of the extraction tower, and the rotating ring 18 drives the cleaning mechanism 19 to rotate, which can quickly clean the inner wall of the extraction tower.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extraction tower for prepolymerization of nylon 6 concentrated solution, comprising an extraction tower body (1), characterized in that: The upper end of the extraction tower body (1) is fixedly connected to a tower cover (2), the middle part of the upper end of the tower cover (2) is fixedly connected to a motor (3), the middle of the front end of the extraction tower body (1) is fixedly connected to a control panel (5), the output end of the motor (3) is fixedly connected to a rotating shaft (20), the bottom end of the rotating shaft (20) is rotatably connected to a fixing ring (13), the fixing ring (13) is fixedly connected to a cross fixing plate (12), the cross fixing plate (12) is fixedly connected to the extraction tower body (1), the rotating shaft (20) is equidistantly fixedly connected to a plurality of rotating disks (16) along the axial direction, a material collecting disk (14) is provided between every two rotating disks (16), the upper surface of the rotating disk (16) is equidistantly fixedly connected to a plurality of baffles (17), the outer ends of the baffles (17) are fixedly connected to the inner wall of a rotating ring (18), and the outer side of the rotating ring (18) is fixedly connected to a cleaning mechanism (19).

2. The extraction tower for prepolymerization of nylon 6 concentrate according to claim 1, characterized in that: The cleaning mechanism (19) comprises a sleeve (194), a connecting rod (192) is slidably connected inside the sleeve (194), an adjacent end of the connecting rod (192) is fixedly connected to an end of a spring (193), an end of the connecting rod (192) away from the other end is fixedly connected to a cleaning brush (191), the other end of the spring (193) is fixedly connected to one side of the corresponding sleeve (194), and the other side of the sleeve (194) is fixedly connected to the rotating ring (18).

3. The extraction tower for prepolymerization of nylon 6 concentrate according to claim 1, characterized in that: A feed inlet (4) is provided on one side of the upper end of the tower cover (2), and a discharge pipe (9) is fixedly connected to the middle position of the bottom of the extraction tower body (1).

4. The extraction tower for prepolymerization of nylon 6 concentrated solution according to claim 1, characterized in that: A liquid outlet (6) is provided at the middle and upper part of the rear end of the extraction tower body (1), and a liquid inlet (7) is provided at the middle and lower part of the rear end of the extraction tower body (1).

5. The extraction tower for prepolymerization of nylon 6 concentrate according to claim 1, characterized in that: Four legs (8) are fixedly connected at equal intervals on the bottom edge of the extraction tower body (1).

6. The extraction tower for prepolymerization of nylon 6 concentrate according to claim 1, characterized in that: A strip-shaped water level monitoring window (10) is provided on one side of the extraction tower body (1).

7. The extraction tower for prepolymerization of nylon 6 concentrate according to claim 1, characterized in that: An extraction tower cavity (11) is provided between the inner and outer walls of the extraction tower body (1), and a plurality of heating tubes (15) are arranged in the extraction tower cavity (11). The heating tubes (15), the motor (3) and the control panel (5) are electrically connected.

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