Production device for AKD (Alkyl Ketene Dimer) surface sizing agent

Abstract

The production device for the AKD surface sizing agent comprises a material mixing tank, a feeding channel arranged at the top end of the material mixing tank and a discharging channel arranged at the bottom end of the material mixing tank, and a stirring assembly for mixing materials is arranged on the material mixing tank. The stirring assembly comprises a rotating shaft vertically and rotatably arranged on the sealing cover, a plurality of stirring blades are rotatably distributed on the peripheral wall of the rotating shaft through a supporting shaft in the axial direction of the rotating shaft, a motor is arranged on the top face of the sealing cover through a support, and the motor is connected with the rotating shaft. A connecting block is arranged at the top end of the concave hole in the rotating shaft and connected with a motor, and a driving device for driving the supporting shaft to rotate is arranged at the bottom end of the connecting block in the concave hole. The driving device is arranged in the rotating shaft of the stirring assembly, the stirring blades can be driven by the supporting shaft to rotate on the rotating shaft, and the angles of the stirring blades on the rotating shaft are changed, so that materials in the tank body are variably stirred and mixed along with the change of the stirring blades, and the mixing efficiency of the materials in the tank body is improved; and the materials are mixed more uniformly.

Description

Technical Field

[0001] The invention belongs to the field of surface sizing agent production, and in particular relates to a production device for AKD surface sizing agent. Background Art

[0002] AKD surface sizing agent is a new type of cationic sizing agent, the full name is alkyl ketene dimer emulsion. AKD surface sizing agent can form a thin layer on the surface of paper, thereby achieving a significant sizing effect. And the use of AKD surface sizing agent can enhance the physical strength, whiteness, opacity, printability of paper, and greatly extend the life of paper. Therefore, AKD surface sizing agent is widely used in the papermaking industry.

[0003] During the production process of AKD surface sizing agent, AKD emulsion needs to be stirred and mixed with emulsions of other materials. In the existing method, when stirring AKD emulsion and emulsions of other materials, stirring is only performed by stirring blades, which is not uniform enough and has low stirring efficiency. Summary of the invention

[0004] The object of the present invention is to provide a production device for AKD surface sizing agent to solve the technical problems raised in the above background technology.

[0005] To achieve the above object, the specific technical scheme of a production device for AKD surface sizing agent of the present invention is as follows:

[0006] A production device for AKD surface sizing agent includes a mixing tank, a feed channel arranged at the top of the mixing tank and a discharge channel arranged at the bottom of the mixing tank, and a stirring assembly for mixing materials is arranged on the mixing tank. The mixing tank includes a tank body, a cover detachably arranged at the opening of the top surface of the tank body by bolts, the feed channel is connected to the cover, and the discharge channel is connected to the bottom surface of the tank body. The stirring assembly includes a rotating shaft arranged on the cover for vertical rotation, and a plurality of stirring blades are distributed on the outer peripheral wall of the rotating shaft along its axial direction through a support shaft for rotation, and a motor is arranged on the top surface of the cover through a bracket, and the motor is connected to the rotating shaft. A concave hole is opened in the rotating shaft, and a connecting block is arranged on the rotating shaft at the top of the concave hole, and the connecting block is connected to the motor. A driving device for driving the support shaft to rotate is arranged at the bottom end of the connecting block in the concave hole.

[0007] Furthermore, the support shaft penetrates the outer peripheral wall of the rotating shaft and extends into the concave hole. The driving device includes an electric push rod arranged at the bottom end of the connecting block, a rack arranged at the bottom end of the electric push rod, and a gear arranged at the extended end of the support shaft, and the rack is meshed with each gear.

[0008] Furthermore, a plurality of pressing components for assisting in stirring the material are distributed on the cover, and the pressing components include a pressing column vertically slidably arranged on the cover, and a motor is connected to the pressing column via a reciprocating mechanism.

[0009] Furthermore, the reciprocating mechanism includes a cam disposed at the top of the rotating shaft, a first fixed plate disposed on the top surface of the cover, and an inclined block slidably disposed on the first fixed plate. A support ear disposed on the side wall of the pressing column is slidably disposed on the first limiting column, and the bottom surface of the first limiting column is connected to the cover, and a first spring is sleeved on the first limiting column between the support ear and the cover. A guide groove is provided on the pressing column, and the inclined block cooperates with the guide groove.

[0010] Furthermore, a fixed block is provided on the top surface of the inclined block, a second fixed plate is provided on the top surface of the cover, a second limiting column is provided on the second fixed plate, and the second limiting column passes through the fixed block and is slidably arranged with it, and a second spring is sleeved on the second limiting column and located between the fixed block and the second fixed plate.

[0011] Furthermore, the pressing column is provided with an adjustment assembly, and the adjustment assembly includes a force-bearing plate slidably arranged in the guide groove, a connecting frame arranged on the top surface of the force-bearing plate, an adjustment bolt threadedly connected to the top surface of the pressing column, and the bottom surface of the adjustment bolt is rotatably connected to the top surface of the connecting frame. The inclined block can pass through the connecting frame.

[0012] Furthermore, the bottom surface of the cover is provided with connecting rods on both sides of the pressing column, and the bottom surfaces of the two connecting rods are connected through a scraping frame, and the pressing column and the scraping frame are slidably arranged.

[0013] The production device for AKD surface sizing agent of the present invention has the following advantages:

[0014] 1. The present invention arranges a driving device in the rotating shaft of the stirring component, which can drive the stirring blade to rotate on the rotating shaft through the support shaft, so that the angle of the stirring blade on the rotating shaft changes, so that the material in the tank body can be stirred and mixed in a variable manner as the stirring blade changes, thereby improving the mixing efficiency of the material in the tank body and making the material mixing more uniform.

[0015] 2. The present invention provides a pressing component to press the material added into the tank downward, so that it can be quickly integrated into the original material in the tank, thereby improving the mixing efficiency of the materials in the mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a production device for AKD surface sizing agent of the present invention;

[0017] Figure 2 A half-section view of a mixing tank of the present invention;

[0018] Figure 3 It is a schematic diagram of the driving device of the present invention;

[0019] Figure 4 It is a schematic diagram of the pressing assembly of the present invention;

[0020] Figure 5It is a schematic diagram of the adjustment component of the present invention.

[0021] Description of the markings in the figure:

[0022] 1. Tank body; 2. Sealing cover; 3. Discharging channel; 4. Feeding channel; 5. Stirring assembly; 51. Rotating shaft; 511. Concave hole; 52. Stirring blade; 53. Motor; 54. Bracket; 6. Connecting block; 7. Supporting shaft; 8. Electric push rod; 9. Rack; 10. Gear; 11. Pressing column; 12. Guide groove; 13. First fixed plate; 14. Bevel block; 15. Cam; 16. Support ear; 17. First limiting column; 18. First spring; 19. Second fixed plate; 20. Fixed block; 21. Second limiting column; 22. Second spring; 23. Force plate; 24. Connecting frame; 25. Adjusting bolt; 26. Connecting rod; 27. Scraping frame. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a production device for AKD surface sizing agent of the present invention in conjunction with the accompanying drawings.

[0024] like Figures 1 to 5 As shown, a production device for AKD surface sizing agent of the present invention includes a mixing tank, a feed channel 4 arranged at the top of the mixing tank and a discharge channel 3 arranged at the bottom of the mixing tank, and a stirring component 5 for mixing materials is also provided on the mixing tank. When in use, the material is added to the mixture through the feed channel 4, and then the material added to the mixing tank is stirred by the stirring component 5, and the stirred material is discharged outward through the discharge channel 3. Among them, a cap is provided at the top opening of the feed channel 4, and the cap and the feed channel 4 are detachably connected. In this device, the cap and the feed channel 4 are connected by threads. And a valve is provided on the discharge channel 3, and the opening and closing of the discharge channel 3 can be controlled by the valve.

[0025] Specifically, the mixing tank includes a tank body 1, a cover 2 detachably arranged at the opening of the top surface of the tank body 1 by bolts, a feed channel 4 connected to the cover 2, a discharge channel 3 connected to the bottom surface of the tank body 1, and a plurality of legs for supporting the same are also distributed on the bottom surface of the mixing tank. The stirring assembly 5 for mixing the materials in the mixing tank includes a rotating shaft 51 vertically rotating on the cover 2, the rotating shaft 51 passes through the cover 2, and the two ends of the rotating shaft 51 extend into the tank body 1 and the outside of the cover 2 respectively. A plurality of stirring blades 52 are rotatably distributed on the outer peripheral wall of the rotating shaft 51 along its axial direction through the support shaft 7. A recessed hole 511 is opened in the rotating shaft 51, and a connecting block 6 is provided on the rotating shaft 51 at the top of the recessed hole 511. A motor 53 connected to an external power source is provided on the top surface of the cover 2 through a bracket 54, and the motor 53 is connected to the connecting block 6 on the rotating shaft 51. In addition, a driving device for driving the supporting shaft 7 to rotate is also provided at the bottom end of the connecting block 6 in the recessed hole 511. The motor 53 drives the rotating shaft 51 to rotate through the connecting block 6, and the rotating shaft 51 drives the stirring blades 52 to stir and mix the materials in the tank body 1 through the supporting shaft 7. The setting of the driving device can drive each stirring blade 52 to rotate, so that the angle of each stirring blade 52 changes, so that the materials in the tank body 1 can be stirred and mixed in a variable manner as the stirring blades 52 change, thereby improving the mixing efficiency of the materials in the tank body 1 and making the materials mixed more evenly.

[0026] Specifically, the support shaft 7 passes through the outer peripheral wall of the rotating shaft 51 and extends into the recessed hole 511. The driving device for driving each stirring blade 52 to rotate includes an electric push rod 8 which is arranged at the bottom end of the connecting block 6 and connected to an external power source. A rack 9 is provided at the bottom end of the electric push rod 8, and a gear 10 is provided on the extended end of the support shaft 7. The gear 10 is located in the recessed hole 511 of the rotating shaft 51, and the rack 9 is meshed with each gear 10. When the electric push rod 8 is started, the electric push rod 8 drives the rack 9 to move in the recessed hole 511 of the rotating shaft 51, and the rack 9 will drive the gear 10 meshed with it to rotate when it moves, and the gear 10 will drive the support shaft 7 connected to it to rotate when it rotates, and each support shaft 7 will also drive the stirring blade 52 connected to it to rotate, so that the angle of the stirring blade 52 relative to the rotating shaft 51 can be changed. Figure 2 and Figure 3 As shown, when each stirring blade 52 is Figure 2 and attached Figure 3 When the stirring blade 52 is in the state shown and rotates clockwise, the material in the tank body 1 is stirred downward by the stirring blade 52, so that the material just added to the tank body 1 can be mixed more quickly with the material originally loaded in the tank body 1. When the electric push rod 8 drives the stirring blade 52 on the support shaft 7 to rotate through the rack 9 and the gear 10, the stirring blade 52 and the stirring blade 52 are Figure 2 and Figure 3When the state shown is opposite, the rotating shaft 51 continues to drive the stirring blade 52 to rotate clockwise through the supporting shaft 7, so that the material in the tank body 1 can be stirred upward. In this way, after the stirring blade 52 on the supporting shaft 7 is driven by the driving device to change its angle, the stirring method of the stirring blade 52 on the material in the tank body 1 changes, so that the stirring and mixing of the material in the tank body 1 is faster and more uniform.

[0027] Preferably, a plurality of pressing components for assisting the stirring of the materials are distributed on the cover 2. By setting the pressing components, the materials added to the tank body 1 can be pressed down into the original materials in the tank body 1, so that they can be quickly integrated into the original materials in the tank body 1, thereby improving the mixing efficiency of the materials in the mixing tank. The pressing component includes a pressing column 11 vertically slidably arranged on the cover 2, and the motor 53 is connected to the pressing column 11 through a reciprocating mechanism. Among them, the reciprocating mechanism includes a cam 15 horizontally arranged at the top of the rotating shaft 51, a first fixed plate 13 arranged on the top surface of the cover 2, the first fixed plate 13 is located on one side of the cam 15, and an inclined block 14 slidably arranged on the first fixed plate 13, and the top angle of the inclined block 14 is arranged outward. A guide groove 12 is opened in the upper half of the pressing column 11, and the inclined block 14 cooperates with the guide groove 12. A support ear 16 is provided on the side wall of the pressing column 11, and the support ear 16 is symmetrically arranged with the longitudinal midline of the pressing column 11. In addition, a first limiting column 17 is vertically slidably arranged on the support ear 16, and the bottom surface of the first limiting column 17 is connected to the cover 2. At the same time, a first spring 18 is sleeved on the first limiting column 17 between the support ear 16 and the cover 2. A guide groove 12 is provided on the pressing column 11, and the inclined block 14 cooperates with the guide groove 12. The rotating shaft 51 drives the cam 15 to rotate. After the cam 15 rotates to contact the inclined block 14, the inclined block 14 will move with the outer contour of the cam 15, so that the inclined block 14 is inserted into the guide groove 12 of the pressing column 11, and the pressing column 11 moves downward under the action of the inclined block 14, and presses downward the material on the surface of the tank body 1, so that the material just added to the tank body 1 is quickly mixed into the original material of the tank body 1, thereby improving the mixing efficiency of the material in the tank body 1. Of course, when the cam 15 continues to rotate and the long axis of the cam 15 moves away from the inclined block 14, the first spring 18 pushes the pressing column 11 upward through the lug 16, and the inclined block 14 moves to the initial position under the action of the guide groove 12 of the pressing column 11, and the pressing column 11 completes one operation. It should be noted that the long axis of the cam 15 and the length direction of the stirring blade 52 are staggered, so that after the pressing column 11 performs an up and down operation, the stirring blade 52 at the top of the rotating shaft 51 will stir the material pressed down in the tank body 1, which can also prevent the stirring blade 52 from colliding with the pressing column 11, causing damage to the device.

[0028] In order to make the inclined block 14 reset more smoothly, a fixed block 20 is provided on the top surface of the inclined block 14, and a second fixed plate 19 is provided on the top surface of the cover 2, and a second limiting column 21 extending toward the fixed block 20 is provided on the second fixed plate 19, and the second limiting column 21 penetrates the fixed block 20 and is slidably arranged with it. At the same time, a second spring 22 is sleeved on the second limiting column 21 and located between the fixed block 20 and the second fixed plate 19. When the cam 15 pushes the inclined block 14 to slide into the guide groove 12, the inclined block 14 passes through the fixed block 20 and causes the second fixed block 20 to compress the second spring 22, and when the convex block continues to rotate and the long axis of the cam 15 is away from the inclined block 14, the second spring 22 drives the inclined block 14 to move to the initial position along with the outer contour of the cam 15 through the fixed block 20, so that the reciprocating movement of the inclined block 14 can be realized.

[0029] like Figure 5 As shown, an adjustment component is also provided on the pressing column 11, and the depth of the pressing column 11 extending into the tank body 1 can be adjusted by the adjustment component to adapt to the adjustment of different material quantities in the tank body 1. Among them, the adjustment component includes a force plate 23 slidably arranged in the guide groove 12, and the force plate 23 can slide up and down in the guide groove 12. A ∩-shaped connecting frame 24 is provided on the top surface of the force plate 23, and the inclined block 14 can pass through the connecting frame 24, and the inclined surface of the inclined block 14 cooperates with the force plate 23. And an adjustment bolt 25 is threadedly connected to the top surface of the pressing column 11, and the bottom surface of the adjustment bolt 25 is rotatably connected to the top surface of the connecting frame 24. By rotating the adjustment bolt 25, the adjustment bolt 25 will move upward on the top surface of the pressing column 11, and the adjustment bolt 25 will also drive the force plate 23 to move upward through the connecting frame 24. When the inclined block 14 moves, the pressing column 11 will be pushed to a deeper position inside the tank body 1 through the force plate 23. Similarly, when the force-bearing plate 23 needs to be moved downward in the guide groove 12 , it is only necessary to rotate the adjusting bolt 25 in the reverse direction.

[0030] As a further improvement, connecting rods 26 are provided on the bottom surface of the cover 2 at both sides of the pressing column 11, and the bottom surfaces of the two connecting rods 26 are connected by a scraping frame 27, and the pressing column 11 and the scraping frame 27 are slidably arranged. After the pressing column 11 is lifted from the material in the tank body 1, there will be residue on the surface of the pressing column 11. At this time, when the pressing column 11 rises, the scraping frame 27 will scrape off the residual material on the surface of the pressing column 11, so that the residual material is separated from the pressing column 11 and falls into the material in the tank body 1 to continue stirring and mixing.

[0031] Usage: Add the material into the tank body 1 through the feed channel 4, then start the stirring component 5 to stir the material in the tank body 1. After stirring for a period of time, start the driving device to drive the stirring blade 52 to rotate and change direction through the support shaft 7 and continue stirring. When adding auxiliary materials, the pressing component can be started to press the material just added to the tank body 1 into the original material in the tank body 1 to achieve rapid mixing between the materials.

[0032] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A production device for AKD surface sizing agent, characterized in that: It comprises a mixing tank, a feeding channel (4) arranged at the top end of the mixing tank and a discharging channel (3) arranged at the bottom end of the mixing tank, and a stirring component (5) for mixing materials is arranged on the mixing tank; The mixing tank comprises a tank body (1), a cover (2) detachably arranged at an opening of the top surface of the tank body (1) by means of bolts, a feed channel (4) connected to the cover (2), and a discharge channel (3) connected to the bottom surface of the tank body (1); The stirring assembly (5) comprises a rotating shaft (51) which is vertically rotatable and arranged on the cover (2); a plurality of stirring blades (52) are rotatably distributed on the outer peripheral wall of the rotating shaft (51) along its axial direction through a support shaft (7); a motor (53) is arranged on the top surface of the cover (2) through a bracket (54); and the motor (53) is connected to the rotating shaft (51); A concave hole (511) is formed in the rotating shaft (51), and a connecting block (6) is provided on the rotating shaft (51) at the top end of the concave hole (511), the connecting block (6) is connected to the motor (53), and a driving device for driving the support shaft (7) to rotate is provided at the bottom end of the connecting block (6) in the concave hole (511).

2. The production device for AKD surface sizing agent according to claim 1, characterized in that: The support shaft (7) passes through the outer peripheral wall of the rotating shaft (51) and extends into the concave hole (511); The driving device comprises an electric push rod (8) arranged at the bottom end of the connecting block (6), a rack (9) arranged at the bottom end of the electric push rod (8), and a gear (10) arranged at the extended end of the support shaft (7), and the rack (9) is meshed with each gear (10).

3. The production device for AKD surface sizing agent according to claim 1, characterized in that: A plurality of pressing components for assisting stirring of the material are distributed on the cover (2), and the pressing components include a pressing column (11) vertically slidably arranged on the cover (2), and the motor (53) is connected to the pressing column (11) via a reciprocating mechanism.

4. The production device for AKD surface sizing agent according to claim 2, characterized in that: The reciprocating mechanism comprises a cam (15) arranged at the top end of the rotating shaft (51), a first fixed plate (13) arranged on the top surface of the cover (2), and an inclined block (14) slidably arranged on the first fixed plate (13); A support ear (16) is arranged on the side wall of the pressing column (11), the support ear (16) is slidably arranged on a first limiting column (17), the bottom surface of the first limiting column (17) is connected to the cover (2), and a first spring (18) is sleeved on the first limiting column (17) and located between the support ear (16) and the cover (2); A guide groove (12) is formed on the pressing column (11), and the inclined block (14) cooperates with the guide groove (12).

5. A production device for AKD surface sizing agent according to claim 4, It is characterized by: The top surface of the inclined block (14) is provided with a fixed block (20), the top surface of the cover (2) is provided with a second fixed plate (19), the second fixed plate (19) is provided with a second limiting column (21), and the second limiting column (21) passes through the fixed block (20) and is slidably arranged therewith, and a second spring (22) is sleeved on the second limiting column (21) and is located between the fixed block (20) and the second fixed plate (19).

6. A production device for AKD surface sizing agent according to any one of claims 4 or 5, characterized in that; The pressing column (11) is provided with an adjustment component, and the adjustment component includes a force-bearing plate (23) slidably arranged in the guide groove (12), a connecting frame (24) arranged on the top surface of the force-bearing plate (23), and an adjustment bolt (25) threadedly connected to the top surface of the pressing column (11), and the bottom surface of the adjustment bolt (25) is rotatably connected to the top surface of the connecting frame (24); The inclined block (14) can pass through the connecting frame (24).

7. The production device for AKD surface sizing agent according to claim 3, characterized in that ； The bottom surface of the cover (2) is located on both sides of the pressing column (11) and is provided with connecting rods (26), and the bottom surfaces of the two connecting rods (26) are connected through a scraping frame (27), and the pressing column (11) and the scraping frame (27) are slidably arranged.

Images