Preimpregnation tank with multistage chemical injection and static mixer

Abstract

The invention discloses a pre-impregnation tank with a multistage chemical injection and static mixer, and relates to the technical field of papermaking raw material pretreatment equipment, a top cover is buckled on an upper port of a tank body, an impurity pump is fixedly arranged on the upper surface of the top cover, and a liquid suction pipe is fixedly arranged at the inlet end of the impurity pump in series; the liquid suction pipe penetrates through the top cover and then is inserted into an upper end opening of the tank body, the mixing barrel is arranged on the side of the tank body, the outlet end of the impurity pump is in through connection with an inner cavity of the tank body through the mixing barrel, the multiple feeding pipes are arranged in parallel and fixed to the upper portion of the side wall of the mixing barrel in a penetrating mode, and the static mixing mechanism is arranged in the mixing barrel; a static mixing technology and a circulating material pumping technology are combined, a corresponding chemical reagent adding structure is designed to be matched with a static mixing mechanism, chemical injection and mixing of pre-impregnation raw materials are achieved, the occupied field and the labor cost are reduced through integrated equipment, the papermaking production efficiency is remarkably improved, and the production cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of papermaking raw material pretreatment equipment technology, specifically to a preimpregnation tank with a multi-stage chemical injection and static mixer. Background Technology

[0002] Papermaking raw materials need to undergo pre-impregnation treatment before entering the production process. This can be achieved by adding certain chemical reagents to assist the impregnation process, softening the hard fibers in the raw materials and leaching out impurities, thus facilitating subsequent processing. Pre-impregnation is a crucial step in the production process, ensuring the materials meet the requirements for papermaking raw materials, shortening processing time in the formal production process, reducing the production cycle, and increasing output. Currently, when adding chemicals during the pre-impregnation process, additional manual labor and equipment are required for mixing to ensure thorough mixing of the materials. This increases equipment costs, labor costs, and space requirements, resulting in high overall production costs. Therefore, designing a device capable of chemical injection and mixing has become an urgent problem to solve. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a preimpregnation tank with a multi-stage chemical injection and static mixer. This tank combines static mixing technology with circulating pump technology and is designed with a corresponding chemical reagent addition structure that works in conjunction with the static mixing mechanism to achieve chemical injection and mixing of preimpregnation raw materials. The integrated equipment reduces space occupation and labor costs, thereby significantly improving the efficiency of papermaking production and effectively reducing production costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions: It includes a tank body and a top cover, wherein the top cover is fastened to the upper port of the tank body. It also includes: An impurity pump is fixedly mounted on the upper surface of the top cover. The suction pipe is fixedly installed in series at the inlet end of the impurity pump, and after passing through the top cover, it is inserted into the upper port of the tank. A mixing cylinder is disposed on the side of the tank body, and the outlet end of the impurity pump is connected to the inner cavity of the tank body through the mixing cylinder. Feeding pipes, wherein several feeding pipes are arranged in parallel and fixed to the upper part of the side wall of the mixing cylinder; A static mixing mechanism is installed inside the mixing cylinder.

[0005] Preferably, the static mixing mechanism comprises: A lifting frame, wherein the lifting frame is installed inside the mixing cylinder; Splined shaft, wherein the splined shaft is fixedly mounted on the lifting frame; Spline sleeves, wherein there are several spline sleeves, and the spline sleeves are movably sleeved on the spline shaft; The blades are arranged in groups of several and are fixedly mounted on the spline sleeve at equal angles. The outer edges of the blades are movably abutted against the mixing cylinder.

[0006] Preferably, a locking screw is fixedly provided at the upper end of the spline shaft, a limiting frame is movably sleeved on the locking screw, and a locking threaded sleeve is spun onto the locking screw, with the locking threaded sleeve movably abutting against the limiting frame.

[0007] Preferably, a limiting sleeve is movably sleeved on the spline shaft, and the limiting sleeve is sandwiched between the spline sleeve and the limiting frame.

[0008] Preferably, a guide groove is integrally formed on the side plate of the mixing cylinder, a lifting screw is provided in the guide groove, and one end of the lifting screw is screwed onto the inner wall of the guide groove through a bearing. A lifting threaded sleeve is fixedly provided on the lifting frame, and the lifting threaded sleeve is threadedly fitted onto the lifting screw. A guide sleeve is fixedly provided on the limiting frame, and the guide sleeve is movably fitted onto the lifting screw.

[0009] Preferably, the upper end of the mixing cylinder is provided with an end cover connected by a flange, and an internal hexagonal sleeve is screwed through the end plate of the end cover by a bearing. A hexagonal transmission rod is fixedly provided at the upper end of the lifting screw, and the hexagonal transmission rod is movably inserted into the internal hexagonal sleeve. A motor frame is fixedly provided on the end cover, and a servo motor is fixedly provided on the motor frame. The output shaft of the servo motor is connected to the upper end of the internal hexagonal sleeve through a spur gear set.

[0010] Preferably, a flow guide hose is fixedly inserted through the side plate of the end cap, and the flow guide hose is connected to the outlet end of the impurity pump via a flange.

[0011] Preferably, the lower end of the mixing cylinder is connected to a discharge pipe via a flange, a connecting seat is fixedly inserted through the lower end of the side wall of the tank, a connector is fixedly installed on the connecting seat, the outlet end of the discharge pipe is fixedly inserted through the connector, two guide holes are opened on the connecting seat, a support shaft is fixedly installed on the connector, a plug is screwed onto the support shaft via a bearing, and the plug is clamped between the connecting seat and the connector, the plug has an opening, and the plug is configured to cooperate with one of the guide holes through the opening.

[0012] Preferably, a baffle is provided on the inner wall of the tank, located on the side of the connecting seat.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution involves setting a mixing cylinder on the side of the tank to form a circulating flow with the tank, setting an array of paddles inside the mixing cylinder, and setting a feeding pipe on the mixing cylinder. The material inside the tank is drawn out by an impurity pump and mixed with chemical reagents in the mixing cylinder by a static mixing mechanism, thereby realizing the chemical injection and addition of impregnating materials in the tank. 2. This solution uses a lifting screw to control the lifting and moving of the lifting frame. The blades are then installed on the lifting frame through the cooperation of the spline shaft and spline sleeve. Limiting frames and limiting sleeves are also provided to allow for the installation of different numbers of blades. The orientation of the blades can be adjusted, so different blades can be selected according to different static mixing requirements. Furthermore, the position of the blades can be adjusted according to the location of the open feeding pipe to ensure thorough mixing of materials. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 yes Figure 1 The right-side view.

[0016] Figure 3 This is a schematic diagram of the tank structure in this invention.

[0017] Figure 4 This is a schematic diagram of the top cover structure in this invention.

[0018] Figure 5 This is a schematic diagram of the structure of the connector and connector head in this invention.

[0019] Figure 6 This is a schematic diagram of the end cover and motor frame in this invention.

[0020] Figure 7 This is a schematic diagram of the mixing cylinder and impeller in this invention.

[0021] Figure 8 This is a schematic diagram of the static mixing mechanism in this invention.

[0022] Figure 9 This is a schematic diagram of the lifting frame and spline shaft in this invention.

[0023] Explanation of reference numerals in the attached figures: 1. Tank body; 2. Top cover; 3. Impurity pump; 4. Suction pipe; 5. Mixing cylinder; 6. Feeding pipe; 7. Static mixing mechanism; 7-1. Lifting frame; 7-2. Splined shaft; 7-3. Splined sleeve; 7-4. Paddle; 8. Locking screw; 9. Limiting frame; 10. Locking threaded sleeve; 11. Limiting sleeve; 12. Guide groove; 13. Lifting screw; 14. Lifting threaded sleeve; 15. Guide sleeve; 16. End cap; 17. Hexagonal sleeve; 18. Hexagonal transmission rod; 19. Motor frame; 20. Servo motor; 21. Flow guiding hose; 22. Discharge pipe; 23. Connecting seat; 24. Connector; 25. Flow guiding hole; 26. Support shaft; 27. Plug; 28. Baffle plate. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1-9 As shown, the specific implementation adopts the following technical solution: This specific embodiment includes a tank body 1, a top cover 2, an impurity pump 3, a mixing cylinder 5, and a static mixing mechanism 7. The top cover 2 is fastened to the upper port of the tank body 1. The impurity pump 3 is fixedly mounted on the upper surface of the top cover 2. A suction pipe 4 is connected to the inlet end of the impurity pump 3 via a flange. The lower end of the suction pipe 4 passes through the top cover 2 and extends into the tank body 1. The mixing cylinder 5 is located on the side of the tank body 1. An end cap 16 is connected to the upper port of the mixing cylinder 5 via a flange. A guide hose 21 is inserted and fixed to the side wall of the end cap 16. The other end of the guide hose 21 is connected to the outlet end of the impurity pump 3 via a flange. Several feed pipes 6 are connected in parallel on the mixing cylinder 5. The static mixing mechanism 7 is located inside the mixing cylinder 5. The lower end of the mixing cylinder 5 is connected to the discharge pipe 22 via a flange. A connecting seat 23 is fixedly inserted through the lower end of the side wall of the tank 1. Two guide holes 25 are opened on the connecting seat 23. A connector 24 is fixedly installed on the connecting seat 23. The outlet end of the discharge pipe 22 is fixedly inserted through the connector 24. A support shaft is fixedly installed on the connector 24. 26. A plug 27 is screwed onto the support shaft 26 via a bearing, and the plug 27 is sandwiched between the connecting seat 23 and the connecting head 24. The plug 27 has an opening, and the plug 27 is connected to one of the guide holes 25 and the port of the discharge pipe 22 through the opening. A baffle 28 is fixedly installed on the inner wall of the tank 1 on the side of the connecting seat 23. The impurity pump 3 draws out the material in the tank 1 through the suction pipe 4 and adds chemical reagents into the mixing cylinder 5 through the feeding pipe 6. The impurity pump 3 pumps the material through the guide hose 21 and the end... The cover 16 is fed into the mixing cylinder 5, so that the material and chemical reagent are mixed by the static mixing mechanism 7 and then discharged through the discharge pipe 22. The material in the discharge pipe 22 passes through the opening on the plug 27 and is sent back into the tank 1 through the guide hole 25 on the connecting seat 23. This cycle is repeated to achieve chemical injection of the material in the tank 1. When discharging the material in the tank 1, the plug 27 is rotated so that the perforation on the plug 27 rotates and another guide hole 25 on the connecting seat 23 is connected to the outside to achieve material discharge. The static mixing mechanism 7 includes a lifting frame 7-1, a splined shaft 7-2, a splined sleeve 7-3, and blades 7-4. A guide groove 12 is integrally formed on the side wall of the mixing cylinder 5. The lifting frame 7-1 is disposed inside the mixing cylinder 5, with one end slidably disposed within the guide groove 12. The splined shaft 7-2 is fixedly mounted on the lifting frame 7-1 and is coaxial with the mixing cylinder 5. Several splined sleeves 7-3 are movably fitted onto the splined shaft 7-2. Several blades 7-4 are arranged in a group, evenly distributed, and fixedly mounted on the splined sleeves 7-3. The outer edges of the blades 7-4 movably abut against the inner wall of the mixing cylinder 5. A limiting sleeve 11 is fitted on the key shaft 7-2 above the spline sleeve 7-3. A locking screw 8 is fixedly installed at the upper end of the spline shaft 7-2. A limiting bracket 9 is movably fitted on the locking screw 8, and one end of the limiting bracket 9 extends into the guide groove 12. The limiting bracket 9 movably abuts against the uppermost limiting sleeve 11. A locking threaded sleeve 10 is threadedly fitted on the locking screw 8, and the locking threaded sleeve 10 abuts against the limiting bracket 9. A lifting screw 13 is screwed into the guide groove 12 through a bearing. A lifting threaded sleeve 14 is fixedly installed on one end of the lifting frame 7-1 that extends into the guide groove 12, and the lifting threaded sleeve 14 is threadedly fitted onto the lifting frame 7-1. On the screw 13, a guide sleeve 15 is fixedly installed on one end of the limit bracket 9 extending into the guide groove 12, and the guide sleeve 15 is movably sleeved on the lifting screw 13. The lower end of the guide sleeve 15 abuts against the upper end of the lifting threaded sleeve 14. A hexagonal transmission rod 18 is fixedly installed on the upper end of the lifting screw 13. An internal hexagonal sleeve 17 is screwed through the top plate of the end cover 16 via a bearing. The lower end of the internal hexagonal sleeve 17 is sleeved on the upper end of the hexagonal transmission rod 18. A motor frame 19 is fixedly installed on the top plate of the end cover 16. A servo motor 20 is fixedly installed on the motor frame 19. The output shaft of the servo motor 20 is connected to the upper end of the internal hexagonal sleeve 17 via a spur gear set. The system is configured such that the servo motor 20 drives the lifting screw 13 to rotate, which in turn guides the lifting frame 7-1 through the guide groove 12, thereby moving the blade 7-4 within the mixing cylinder 5. This adjusts the position of the blade 7-4 relative to the feeding pipe 6, achieving the mixing of the injected chemical reagents and materials. By removing the end cap 16, unscrewing the locking threaded sleeve 10, and removing the limiting frame 9, the spline sleeve 7-3 with the blade 7-4 can be added or removed. After installing a certain number of spline sleeves 7-3, the corresponding limiting sleeve 11 is added, so that after the limiting frame 9 is installed, the spline sleeve 7-3 is pressed against the lifting frame 7-1 by the limiting sleeve 11.

[0026] When using this device, connect the feeding pipe 6 to the chemical reagent addition unit, connect the impurity pump 3 to the servo motor 20, rotate the plug 27 to connect the discharge pipe 22 to the corresponding guide hole 25 through the perforation on the plug 27, and seal the other guide hole 25 through the plug 27. Add the material to be impregnated into the tank 1; the impurity pump 3 draws the material from the tank 1 through the suction pipe 4 and sends it into the end cap 16 through the guide hose 21. Add the chemical reagent through the feeding pipe 6, so that the material enters the mixing cylinder 5 and comes into contact with the chemical reagent. The material is mixed by the blades 7-4 in the mixing cylinder 5. Material enters the discharge pipe 22 and passes through the perforation on the plug 27 and the guide hole 25 on the connecting seat 23 into the tank 1. The material entering the tank 1 is guided by the baffle 28 to prevent direct scouring of the suction pipe 4 port. This process is repeated to achieve chemical injection of material into the tank 1. The servo motor 20 drives the internal hexagonal sleeve 17 to rotate, which in turn drives the lifting screw 13 to rotate via the hexagonal transmission rod 18. The lifting frame 7-1 is guided by the guide groove 12. The lifting screw 13 pulls the lifting threaded sleeve 14, thereby moving the lifting frame 7-1. The lifting frame 7-1 then drives the spline shaft 7-2 and... The limiting frame 9 moves within the mixing cylinder 5, thereby moving the spline sleeve 7-3 and the impeller 7-4 within the mixing cylinder 5. This adjusts the position of the impeller 7-4 within the mixing cylinder 5 relative to the feeding pipe 6, ensuring that the impeller 7-4 is positioned close to the side of the feeding pipe 6 where the chemical reagent is added. This allows the chemical reagent and material to quickly contact the impeller 7-4, achieving static mixing. To change the mixing efficiency, different numbers of impellers 7-4 are added, and the spiral direction of the impeller 7-4 is adjusted to change the mixing pattern and efficiency. The end cap 16 is removed, and the lifting screw 13 is rotated to move the lifting frame 7-1 towards the upper end of the mixing cylinder 5. Move the blade to the side, then unscrew the locking threaded sleeve 10 from the locking screw 8, remove the limit bracket 9, then remove the original limit sleeve 11 and spline sleeve 7-3, and add spline sleeve 7-3 again. When adding spline sleeve 7-3, adjust the forward and reverse helical direction of blade 7-4. After adding spline sleeve 7-3, add the corresponding number of limit sleeves 11 to the empty section of spline shaft 7-2, and reinstall the limit bracket 9 and locking threaded sleeve 10, so that the limit bracket 9 abuts against the limit sleeve 11, and the spline sleeve 7-3 is pressed against the lifting frame 7-1 by the limit sleeve 11, thus completing the installation and adjustment of blade 7-4.

[0027] Compared with the prior art, the beneficial effects of the present invention are: 1. In this device, a paddle 7-4 is installed in the mixing cylinder 5 through the cooperation of spline shaft 7-2 and spline sleeve 7-3, and several feeding pipes 6 are connected in parallel on the mixing cylinder 5. The material in the tank 1 is drawn by the impurity pump 3 and sent into the mixing cylinder 5. The paddle 7-4 realizes the static mixing of material and chemical reagent, and the mixed material is sent back to the tank 1 to realize the chemical injection of pre-impregnated material. 2. This device uses the cooperation between the lifting frame 7-1 and the limiting frame 9, and the setting of the limiting sleeve 11 on the spline shaft 7-2, to lock the spline sleeve 7-3 on the lifting frame 7-1. The cooperation between the lifting screw 13 and the lifting threaded sleeve 14, and the rotation of the lifting screw 13 driven by the servo motor 20, adjusts the position of the blade 7-4 in the mixing cylinder 5, so that the blade 7-4 cooperates with the feeding pipe 6 to achieve rapid mixing processing. 3. In this device, a plug 27 with an opening is provided between the discharge pipe 22 and the tank 1 through the connecting seat 23 and the connecting head 24. Two guide holes 25 that cooperate with the plug 27 are provided on the connecting seat 23. By adjusting the posture of the plug 27, the tank 1 can be connected to the discharge pipe 22, or the tank 1 can be connected to the outside, so as to realize the circulation and mixing of materials or the discharge of materials.

[0028] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A pre-impregnation tank with a multi-stage chemical injection and static mixer, comprising a tank body (1) and a top cover (2), wherein the top cover (2) is fastened to the upper port of the tank body (1); characterized in that, It also includes: Impurity pump (3), wherein the impurity pump (3) is fixedly mounted on the upper surface of the top cover (2); The suction pipe (4) is fixedly installed in series on the inlet end of the impurity pump (3), and the suction pipe (4) passes through the top cover (2) and is inserted into the upper port of the tank (1). Mixing cylinder (5), the mixing cylinder (5) is set on the side of the tank body (1), and the outlet end of the impurity pump (3) is connected to the inner cavity of the tank body (1) through the mixing cylinder (5); Feeding pipe (6), wherein there are several feeding pipes (6) arranged in parallel and fixed to the upper part of the side wall of the mixing cylinder (5); The static mixing mechanism (7) is located inside the mixing cylinder (5).

2. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 1, characterized in that: The static mixing mechanism (7) includes: The lifting frame (7-1) is installed inside the mixing cylinder (5); Splined shaft (7-2), wherein the splined shaft (7-2) is fixedly mounted on the lifting frame (7-1); Spline sleeve (7-3), there are several spline sleeves (7-3), and the spline sleeves (7-3) are movably sleeved on the spline shaft (7-2); The blades (7-4) are arranged in groups of several and are fixedly mounted on the spline sleeve (7-3) at equal angles. The outer side of the blades (7-4) is movably abutted against the mixing cylinder (5).

3. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 2, characterized in that: The upper end of the spline shaft (7-2) is fixedly provided with a locking screw (8), a limiting frame (9) is movably sleeved on the locking screw (8), and a locking thread sleeve (10) is spun onto the locking screw (8) by a thread, and the locking thread sleeve (10) is movably abutted against the limiting frame (9).

4. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 3, characterized in that: A limiting sleeve (11) is movably sleeved on the spline shaft (7-2), and the limiting sleeve (11) is sandwiched between the spline sleeve (7-3) and the limiting frame (9).

5. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 4, characterized in that: The mixing cylinder (5) has an integrally formed guide groove (12) on its side plate. A lifting screw (13) is provided in the guide groove (12), and one end of the lifting screw (13) is screwed onto the inner wall of the guide groove (12) through a bearing. A lifting threaded sleeve (14) is fixedly provided on the lifting frame (7-1). The lifting threaded sleeve (14) is screwed onto the lifting screw (13) through a thread. A guide sleeve (15) is fixedly provided on the limiting frame (9). The guide sleeve (15) is movably sleeved on the lifting screw (13).

6. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 5, characterized in that: The upper end of the mixing cylinder (5) is provided with an end cover (16) connected by a flange. An internal hexagonal sleeve (17) is screwed through the end plate of the end cover (16) by a bearing. A hexagonal transmission rod (18) is fixedly provided at the upper end of the lifting screw (13), and the hexagonal transmission rod (18) is movably inserted into the internal hexagonal sleeve (17). A motor frame (19) is fixedly provided on the end cover (16), and a servo motor (20) is fixedly provided on the motor frame (19). The output shaft of the servo motor (20) is connected to the upper end of the internal hexagonal sleeve (17) through a spur gear set.

7. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 6, characterized in that: A flow guide hose (21) is fixedly installed on the side plate of the end cap (16), and the flow guide hose (21) is connected to the outlet end of the impurity pump (3) through a flange.

8. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 7, characterized in that: The lower end of the mixing cylinder (5) is connected to a discharge pipe (22) via a flange. A connecting seat (23) is fixedly inserted through the lower end of the side wall of the tank body (1). A connector (24) is fixedly installed on the connecting seat (23). The outlet end of the discharge pipe (22) is fixedly inserted through the connector (24). Two guide holes (25) are opened on the connecting seat (23). A support shaft (26) is fixedly installed on the connector (24). A plug (27) is screwed onto the support shaft (26) via a bearing. The plug (27) is sandwiched between the connecting seat (23) and the connector (24). An opening is provided on the plug (27), and the plug (27) is configured to cooperate with one of the guide holes (25) through the opening.

9. A pre-impregnation tank with a multi-stage chemical injection and static mixer according to claim 8, characterized in that: A baffle (28) is provided on the inner wall of the tank (1) on the side of the connecting seat (23).

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