Precise adding device for papermaking additive
By designing a papermaking additive dosing device with a threaded rod and a high-pressure air pump, the problem of traditional dosing devices affecting paper quality was solved, achieving precise dosing and complete reaction of additives, and improving the consistency of paper quality and dosing efficiency.
Patent Information
- Application Number
- CN202423077107.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Traditional papermaking additives dosing devices use direct dosing methods that affect the reaction of additives, leading to unstable paper quality.
A precise dosing device for papermaking additives was designed. It uses a threaded rod to drive a baffle to slide and seal the connecting pipe, combined with a high-pressure air pump and a one-way valve, to achieve precise addition of additives and reduce residues.
It enables precise addition of additives in the reactor, improves the consistency of paper quality and the complete reaction of additives, reduces residues, and improves addition efficiency.
Smart Images
Figure CN223615837U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of papermaking additive dosing technology, and in particular to a precise dosing device for papermaking additives. Background Technology
[0002] Papermaking auxiliaries play a crucial role in modern papermaking production, particularly in improving quality and increasing product variety. Pulping and papermaking auxiliaries primarily improve process effects and are generally rarely retained in the pulp or paper, playing only a supporting role in pulp and paper quality. Paper finishing auxiliaries, on the other hand, mostly remain in the paper, directly affecting its quality, improving it, or imparting certain special properties. The development of new pulping and papermaking processes and the need for special paper applications will further promote the research and development of new papermaking auxiliaries. Papermaking auxiliaries are auxiliary chemicals added during the pulping and papermaking process to impart certain properties to the processing technology and products. The term "papermaking auxiliary dosing" refers to the device used to add these auxiliaries.
[0003] Traditional papermaking additive dosing devices typically add additives directly into the reactor through the inlet, placing them on top of the pulp inside the reactor. This direct dosing method can affect the reaction effect of the additives, thereby impacting the quality of the produced paper. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a precise dosing device for papermaking additives, so as to solve the problem that the direct dosing method of the prior art will affect the reaction effect of the additives, thereby affecting the quality of the paper produced.
[0005] In view of this, the present invention provides a precise dosing device for papermaking additives, including a reaction vessel body, wherein a dosing mechanism is provided on the top of the reaction vessel body;
[0006] The feeding mechanism includes a feeding hopper, a conveying pipe, a connecting pipe, a fixing frame, a threaded rod, a baffle, and a limiting component. The feeding hopper is fixedly installed on the top of the reactor body, the conveying pipe is fixedly installed on the bottom of the feeding hopper, the connecting pipe is fixedly installed on the side wall of the conveying pipe, the fixing frame is fixedly installed on the side wall of the conveying pipe, the threaded rod is rotatably connected inside the fixing frame, the baffle is slidably connected inside the fixing frame and movably connected to the side wall of the threaded rod, and the limiting component is fixedly installed at one end of the threaded rod and is located inside the baffle.
[0007] Optionally, the conveying pipe is connected to the feeding hopper, and the conveying pipe is connected to the reactor body via a connecting pipe.
[0008] Optionally, a plurality of connecting pipes are provided, and the connecting pipes are square pipes.
[0009] Optionally, a servo motor is fixedly installed on one side of the mounting bracket, and the output end of the servo motor is connected to the threaded rod via a transmission belt.
[0010] Optionally, a sealing element is fixedly installed at one end of the baffle, and the baffle is matched with the connecting pipe.
[0011] Optionally, a one-way valve is fixedly installed on the inner wall of the feeding hopper, and the gap between the bottom of the one-way valve and the inner wall of the feeding hopper forms a pressurization chamber. A high-pressure air pump is fixedly installed on the side wall of the feeding hopper, and the output end of the high-pressure air pump is located inside the pressurization chamber.
[0012] Optionally, the top of the reactor body is provided with an exhaust port, a ventilation frame is fixedly installed inside the exhaust port, a baffle is slidably connected inside the ventilation frame, a spring is fixedly installed on the side wall of the baffle, and a limit plate is fixedly installed on the inner wall of the exhaust port.
[0013] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:
[0014] 1. This utility model discloses a precise dosing device for papermaking additives. It adopts a dosing mechanism, in which the rotation of the threaded rod can drive the baffle to slide inside the fixed frame, so that the baffle can slide into the connecting pipe to seal the connecting pipe. The connecting pipe can be sealed as needed, so that the additives can be added to a specified depth inside the reactor body more precisely, so that the additives can react better and more completely with the pulp inside the reactor body, thereby ensuring the quality of the paper.
[0015] 2. The papermaking additive precision dosing device of this utility model adopts a one-way valve design. With this design, when the high-pressure air pump pressurizes the inside of the pressurizing chamber, the additive inside the pressurizing chamber will not flow back out of the feeding hopper. By setting a high-pressure air pump to deliver the additive by pressurization, the residue of additive in the delivery pipe and connecting pipe can be effectively reduced, so that the additive is added more thoroughly.
[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings:
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a partial cross-sectional view of the present invention.
[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.
[0022] Explanation of reference numerals in the attached drawings: 1. Reactor body; 2. Feed hopper; 3. High-pressure air pump; 4. Delivery pipe; 5. Connecting pipe; 6. One-way valve; 7. Pressurization chamber; 8. Fixing frame; 9. Servo motor; 10. Threaded rod; 11. Baffle; 12. Limiting component; 13. Sealing component; 14. Exhaust port; 15. Barrier component; 16. Limiting plate; 17. Vent frame. Detailed Implementation
[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.
[0024] The following describes in detail, with reference to the accompanying drawings, a papermaking additive precision dosing device according to an embodiment of the present invention.
[0025] Example 1
[0026] For easier understanding, please refer to Figures 1 to 4 An embodiment of the papermaking additive precision dosing device provided by this utility model includes a reaction vessel body 1, and a dosing mechanism is provided on the top of the reaction vessel body 1;
[0027] The feeding mechanism includes a feeding hopper 2, a conveying pipe 4, a connecting pipe 5, a fixing frame 8, a threaded rod 10, a baffle 11, and a limiting member 12. The feeding hopper 2 is fixedly installed on the top of the reactor body 1, the conveying pipe 4 is fixedly installed on the bottom of the feeding hopper 2, the connecting pipe 5 is fixedly installed on the side wall of the conveying pipe 4, the fixing frame 8 is fixedly installed on the side wall of the conveying pipe 4, the threaded rod 10 is rotatably connected inside the fixing frame 8, the baffle 11 is slidably connected inside the fixing frame 8, and the baffle 11 is movably connected to the side wall of the threaded rod 10. The limiting member 12 is fixedly installed at one end of the threaded rod 10 and is located inside the baffle 11. Several connecting pipes 5 are provided, and the connecting pipes 5 are square pipes.
[0028] It should be noted that by setting up the conveying pipe 4, the additives in the feeding hopper 2 can flow into the conveying pipe 4. By setting up multiple connecting pipes 5, the conveying pipe 4 can be connected to multiple depth positions of the reactor body 1 through the connecting pipes 5. The threaded rod 10 can drive the baffle 11 to slide inside the fixed frame 8 by rotating the threaded rod 10, so that the baffle 11 can slide into the connecting pipe 5 to block the connecting pipe 5. The connecting pipe 5 can be blocked as needed, so that the additives can be added to the specified depth position inside the reactor body 1 more accurately, so that the additives can react with the pulp inside the reactor body 1 better and more completely, thereby ensuring the quality of the paper.
[0029] In some embodiments, such as Figure 3 As shown, the conveying pipe 4 is connected to the feeding hopper 2, and the conveying pipe 4 is connected to the reactor body 1 through the connecting pipe 5. The servo motor 9 is fixedly installed on one side of the fixed frame 8, and the output end of the servo motor 9 is connected to the threaded rod 10 through the transmission belt.
[0030] It should be noted that by setting the connecting pipe 5, the conveying pipe 4 can be connected to the reactor body 1 through the connecting pipe 5, and by setting the servo motor 9, the threaded rod 10 can be rotated.
[0031] In some embodiments, such as Figure 3 As shown, a sealing element 13 is fixedly installed at one end of the baffle 11, and the baffle 11 is matched with the connecting pipe 5.
[0032] It should be noted that by setting the sealing element 13, the baffle 11 can better seal the connecting pipe 5 after extending into the connecting pipe 5.
[0033] Example 2
[0034] In some embodiments, such as Figure 2 As shown, a one-way valve 6 is fixedly installed on the inner wall of the feeding hopper 2. The gap between the bottom of the one-way valve 6 and the inner wall of the feeding hopper 2 forms a pressurizing chamber 7. A high-pressure air pump 3 is fixedly installed on the side wall of the feeding hopper 2. The output end of the high-pressure air pump 3 is located inside the pressurizing chamber 7. An exhaust port 14 is opened on the top of the reactor body 1. A ventilation frame 17 is fixedly installed inside the exhaust port 14. A barrier 15 is slidably connected inside the ventilation frame 17. A spring is fixedly installed on the side wall of the barrier 15. A limit plate 16 is fixedly installed on the inner wall of the exhaust port 14.
[0035] It should be noted that the spring can support the barrier 15, the limiting plate 16 can limit the position of the barrier 15, and the one-way valve 6 can allow the additive to flow into the pressurizing chamber 7 after entering the feeding hopper 2. At the same time, when the high-pressure air pump 3 pressurizes the pressurizing chamber 7, the additive inside the pressurizing chamber 7 will not flow back out of the feeding hopper 2. By using the high-pressure air pump 3 to deliver the additive by pressurization, the residue of additive in the delivery pipe 4 and the connecting pipe 5 can be effectively reduced, making the addition of additive more thorough. At the same time, it can increase the internal pressure of the reactor body 1, which can make the additive more completely mixed. The exhaust port 14 can play a role in venting and prevent the internal pressure of the reactor body 1 from being too high.
[0036] The high-pressure air pump 3, one-way valve 6, and servo motor 9 in this utility model are known components and will not be described in detail here.
[0037] Working principle: When additives need to be added, the additives are poured into the feeding hopper 2. The one-way valve 6 allows the additives to flow into the pressurizing chamber 7 after entering the feeding hopper 2. Then, the servo motor 9 controls the threaded rod 10 to rotate, driving the baffle 11 to move into the connecting pipe 5. The connecting pipe 5 is sealed as needed, so that the additives can be added to the specified depth inside the reactor body 1 more accurately. When adding, the high-pressure air pump 3 pressurizes the pressurizing chamber 7, and the additives inside the pressurizing chamber 7 will not flow back out of the feeding hopper 2. By setting the high-pressure air pump 3 to deliver the additives by pressurization, the residue of additives in the delivery pipe 4 and the connecting pipe 5 can be effectively reduced, so that the additives are added more thoroughly.
[0038] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A precise dosing device for papermaking additives, characterized in that: It includes a reactor body (1), and a dosing mechanism is provided on the top of the reactor body (1); The feeding mechanism includes a feeding hopper (2), a conveying pipe (4), a connecting pipe (5), a fixing frame (8), a threaded rod (10), a baffle (11), and a limiting member (12). The feeding hopper (2) is fixedly installed on the top of the reactor body (1). The conveying pipe (4) is fixedly installed on the bottom of the feeding hopper (2). The connecting pipe (5) is fixedly installed on the side wall of the conveying pipe (4). The fixing frame (8) is fixedly installed on the side wall of the conveying pipe (4). The threaded rod (10) is rotatably connected inside the fixing frame (8). The baffle (11) is slidably connected inside the fixing frame (8) and is movably connected to the side wall of the threaded rod (10). The limiting member (12) is fixedly installed at one end of the threaded rod (10) and is located inside the baffle (11).
2. The papermaking additive precision dosing device according to claim 1, characterized in that: The conveying pipe (4) is connected to the feeding hopper (2), and the conveying pipe (4) is connected to the reactor body (1) through the connecting pipe (5).
3. The papermaking additive precision dosing device according to claim 1, characterized in that: Several connecting pipes (5) are provided, and the connecting pipes (5) are square pipes.
4. The precise dosing device for papermaking additives according to claim 1, characterized in that: A servo motor (9) is fixedly installed on one side of the fixed frame (8), and the output end of the servo motor (9) is connected to the threaded rod (10) via a transmission belt.
5. The papermaking additive precision dosing device according to claim 1, characterized in that: A sealing element (13) is fixedly installed at one end of the baffle (11), and the baffle (11) is matched with the connecting pipe (5).
6. The precise dosing device for papermaking additives according to claim 1, characterized in that: A one-way valve (6) is fixedly installed on the inner wall of the feeding hopper (2). The gap between the bottom of the one-way valve (6) and the inner wall of the feeding hopper (2) forms a pressurizing chamber (7). A high-pressure air pump (3) is fixedly installed on the side wall of the feeding hopper (2). The output end of the high-pressure air pump (3) is located inside the pressurizing chamber (7).
7. The papermaking additive precision dosing device according to claim 1, characterized in that: The reactor body (1) has an exhaust port (14) at the top. A ventilation frame (17) is fixedly installed inside the exhaust port (14). A barrier (15) is slidably connected inside the ventilation frame (17). A spring is fixedly installed on the side wall of the barrier (15). A limit plate (16) is fixedly installed on the inner wall of the exhaust port (14).