Papermaking beater for preventing oxidation of lignocellulose

Abstract

The utility model relates to papermaking stirrer technical field discloses the papermaking stirrer of preventing lignin fiber oxidation, including the stirring tank, the stirring tank inside installation has the stirring mechanism, the stirring mechanism includes the stirring shaft, the stirring shaft surface fixedly connected with transmission sleeve, transmission sleeve surface transmission is connected with electric rotating shaft, electric rotating shaft right -hand member fixedly connected with the rotating block, the rotating block right -hand member fixedly connected with the connecting block, the connecting block right -hand member fixedly connected with the stirring vane. The utility model discloses through electric rotating shaft starts to rotate under the drive of motor, and the rotating block of its right -hand member turns over in succession. The rotation of rotating block drives the rotation of the connecting block fixedly connected with it, and the connecting block drives the rotation of the stirring vane again, to realize the stirring of paper pulp in the stirring tank. In order to prevent the excessive rotation of the stirring vane, the rear end of the rotating block is fixedly connected with the connecting plate. When the rotating block rotates, the connecting plate rotates synchronously.

Description

Technical Field

[0001] This utility model relates to the field of papermaking agitator technology, and in particular to a papermaking agitator for preventing the oxidation of lignin fibers. Background Technology

[0002] The papermaking industry is one of the important basic industries of the national economy. Its production process involves many complex technological steps, among which pulp mixing is a key step. In the papermaking process, pulp is mainly composed of cellulose, hemicellulose, and lignin. Lignin is an important component of pulp, playing a role in binding fibers during papermaking, but it is also prone to oxidation during mixing. The main function of a papermaking agitator is to fully disperse and mix the fibers in the pulp to ensure pulp homogeneity, thereby improving paper quality. The mixing process not only affects the degree of fiber dispersion but also the bonding force between fibers, thus affecting the strength and uniformity of the paper. Therefore, the design and performance of the agitator are crucial to the papermaking process.

[0003] Existing agitators typically employ a single agitator blade structure with a relatively fixed blade movement trajectory, resulting in a limited agitation range and uneven agitation. This not only affects the degree of fiber dispersion but may also lead to excessively high or low local pulp concentrations, impacting paper strength and whiteness, and increasing the difficulty and cost of subsequent bleaching processes. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a papermaking agitator to prevent the oxidation of lignin fibers.

[0005] This utility model is achieved by the following technical solution: a papermaking agitator to prevent lignin fiber oxidation, including an agitator tank, an agitator mechanism installed inside the agitator tank, an agitator shaft, a transmission sleeve fixedly connected to the surface of the agitator shaft, an electric rotating shaft drivingly connected to the surface of the transmission sleeve, a rotating block fixedly connected to the right end of the electric rotating shaft, a connecting block fixedly connected to the right end of the rotating block, and an agitator blade fixedly connected to the right end of the connecting block.

[0006] In the above technical solution, the stirring shaft is the core component of the stirring mechanism. Its rotation drives the stirring blades to agitate the pulp; stable rotation is fundamental to ensuring effective agitation. The transmission sleeve connects the stirring shaft and the electric rotating shaft, providing transmission and ensuring that the rotation of the electric rotating shaft is accurately transmitted to the stirring shaft, achieving effective power transfer. The electric rotating shaft provides the power source; its rotation drives the stirring shaft through the transmission sleeve, thereby driving the stirring blades to agitate. It is a key power component for the normal operation of the stirring mechanism. The rotating block connects the electric rotating shaft and the stirring blades, transmitting the power from the electric rotating shaft to the stirring blades, enabling them to rotate and agitate the pulp. The connecting block connects the rotating block and the stirring blades, providing fixation and connection, ensuring that the stirring blades rotate stably with the rotating block, ensuring a smooth stirring process. The stirring blades are in direct contact with the pulp, and their rotation agitates the pulp, fully dispersing and mixing the fibers, improving pulp quality; they are a key component for achieving the agitation function.

[0007] As a further improvement to the above solution, the stirring mechanism also includes a connecting plate, the front end of which is fixedly connected to the rear end of the rotating block, a connecting column is fixedly connected inside the connecting plate, and a support rod is drivenly connected to the surface of the connecting column.

[0008] With the above technical solution, the front end of the connecting plate is fixedly connected to the rear end of the rotating block. When the rotating block rotates, the connecting plate rotates synchronously. Its function is to prevent the stirring blade from rotating excessively. By rotating the connecting plate, it drives the movement of subsequent components such as the connecting column, thereby limiting and adjusting the rotation of the stirring blade to a certain extent, ensuring the stability and uniformity of the stirring process.

[0009] As a further improvement to the above solution, a fixing plate is fixedly connected to the bottom end of the first support rod, and a second support rod is fixedly connected to the bottom end of the fixing plate. The inside of the second support rod is sleeved with the surface of the support column, and the left end of the support column is fixedly connected to the right end of the movable plate.

[0010] Through the above technical solution, the connecting column is internally fixedly connected to the connecting plate, and its surface is connected to a support rod one via a transmission mechanism. The function of the connecting column is to transmit the rotation of the connecting plate to the support rod one. Through its transmission action, the support rod one can move up and down, thereby driving the movement of subsequent components and achieving further adjustment and control of the rotation of the stirring blade. A fixed plate is fixedly connected to the bottom end of the support rod one, and its up and down movement drives the fixed plate to move up and down. The setting of the support rod one increases the structural stability of the stirring mechanism, and its up and down movement function provides power transmission for the movement of subsequent components, which helps to achieve dynamic adjustment of the stirring process. A second support rod is fixedly connected to the bottom end of the fixed plate. Its function is to transmit the up and down movement of the support rod one to the support rod two, further expanding the range and effect of the movement. At the same time, the fixed plate also plays a connecting and supporting role, ensuring a stable connection between the support rod one and the support rod two, and ensuring the reliability of the movement transmission. The inside of the support rod two is sleeved with the surface of the supporting column, and its up and down movement drives the movable plate to move up and down on the surface of the stirring shaft. The sleeve design between the second support rod and the support column not only enables the transmission of motion but also facilitates the adjustment of the position of the movable plate. At the same time, this sleeve structure also facilitates disassembly and maintenance, improving the ease of equipment maintenance.

[0011] As a further improvement to the above solution, the inside of the movable plate is slidably connected to the surface of the stirring shaft, and the bottom end of the stirring shaft is drivenly connected to the bottom end of the mixing tank.

[0012] Through the above technical solution, the movable plate is slidably connected to the surface of the stirring shaft, and its right end is fixedly connected to the left end of the support column. The sliding connection of the movable plate to the surface of the stirring shaft allows the stirring shaft to be adjusted vertically as needed, thereby changing the position of the stirring blades inside the mixing tank and adjusting the stirring depth and effect.

[0013] As a further improvement to the above solution, a support frame is fixedly connected to the bottom of the mixing tank, and several support frames are provided.

[0014] Through the above technical solution, several support frames are fixedly connected to the bottom of the mixing tank. Their function is to provide stable support for the mixing tank, ensure the stability and safety of the mixing tank during the mixing process, prevent the mixing tank from shaking or tilting, thereby ensuring the smooth progress of the mixing process and improving the operational reliability of the equipment.

[0015] As a further improvement to the above solution, the top of the mixing tank is hinged to the bottom of the tank cover, the top of the tank cover is fixedly connected to a feed pipe, and the top of the tank cover is fixedly connected to a water inlet pipe.

[0016] The above technical solution involves a feed pipe and a water inlet pipe fixedly connected to the top of the mixing tank, which are hinged to the top of the mixing tank. The tank lid prevents pulp from splashing out and external impurities from entering during mixing, ensuring cleanliness and a sealed environment. Simultaneously, the hinged design of the lid facilitates opening and closing, enabling convenient feeding and water inlet operations. The feed pipe adds pulp raw materials to the mixing tank; its position and connection method allow the pulp to enter smoothly, providing raw material input for the mixing process and ensuring its normal operation. The water inlet pipe adds water to the mixing tank, which dilutes the pulp and adjusts its concentration during mixing. The water inlet pipe allows water to be easily added to the mixing tank and mixed with the pulp, meeting the pulp concentration requirements of the papermaking process.

[0017] As a further improvement to the above solution, a discharge pipe is fixedly connected to the bottom of the mixing tank, a discharge valve is drivenly connected to the surface of the discharge pipe, and a filter plate is installed on the inner wall of the discharge pipe.

[0018] With the above technical solution, the discharge pipe is fixedly connected to the bottom of the mixing tank to discharge the mixed pulp from the tank. Its position and design facilitate the smooth flow of the pulp, completing the discharge process after mixing. A discharge valve is installed on the surface of the discharge pipe. By adjusting the opening and closing degree of the valve, the discharge speed and flow rate can be controlled to meet different production rhythms and process requirements. A filter plate is installed on the inner wall of the discharge pipe to filter the mixed pulp, removing impurities and large fiber clumps, ensuring the quality of the discharged pulp and improving its purity and uniformity.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: The stirring mechanism of this invention forms a stable structural system through the interconnection and support of components such as the connecting plate, support rod one, fixing plate, and support rod two. This structural design can withstand large stirring forces, ensure the smooth operation of the stirring process, reduce equipment vibration and wear, and extend the service life of the equipment. The second support rod is connected to the support column via a sleeve connection, and the movable plate is slidably connected to the stirring shaft. This design facilitates the disassembly and installation of various components of the stirring mechanism. When maintenance or replacement of parts is required, operators can quickly disassemble the relevant parts for inspection, repair, or replacement, greatly improving equipment maintenance efficiency and reducing maintenance costs. This invention utilizes an electric rotating shaft to drive a rotating block, which in turn drives the stirring blades to rotate, thus achieving pulp mixing. Simultaneously, the coordinated movement of components such as the connecting plate, connecting column, support rod one, fixed plate, support rod two, and movable plate allows the stirring blades to generate different motion trajectories and mixing forces during the mixing process. This ensures thorough mixing of the pulp, improves the mixing effect, and results in a more uniform fiber distribution in the pulp, which is beneficial for subsequent papermaking processes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of this utility model; Figure 3 This is a schematic cross-sectional view of the present invention. Figure 4 This is a schematic diagram of the stirring mechanism of this utility model; Figure 5 This is an enlarged structural diagram of point A in this utility model.

[0021] Explanation of key symbols: 1. Mixing tank; 2. Support frame; 3. Tank cover; 4. Feed pipe; 5. Water inlet pipe; 6. Discharge pipe; 7. Discharge valve; 8. Mixing mechanism; 801. Mixing shaft; 802. Transmission sleeve; 803. Electric rotating shaft; 804. Rotating block; 805. Connecting block; 806. Mixing blade; 807. Connecting plate; 808. Connecting column; 809. Support rod one; 810. Fixed plate; 811. Support rod two; 812. Support column; 813. Movable plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example: Please combine Figure 1-5 The papermaking agitator for preventing lignin fiber oxidation in this embodiment includes an agitator tank 1. An agitator mechanism 8 is installed inside the agitator tank 1. The agitator mechanism 8 includes an agitator shaft 801. A transmission sleeve 802 is fixedly connected to the surface of the agitator shaft 801. An electric rotating shaft 803 is drivenly connected to the surface of the transmission sleeve 802. A rotating block 804 is fixedly connected to the right end of the electric rotating shaft 803. A connecting block 805 is fixedly connected to the right end of the rotating block 804. An agitator blade 806 is fixedly connected to the right end of the connecting block 805.

[0024] The stirring mechanism 8 also includes a connecting plate 807, the front end of which is fixedly connected to the rear end of the rotating block 804.

[0025] A connecting column 808 is fixedly connected inside the connecting plate 807, and a support rod 809 is connected to the surface of the connecting column 808.

[0026] A fixing plate 810 is fixedly connected to the bottom end of support rod 809, and a second support rod 811 is fixedly connected to the bottom end of fixing plate 810.

[0027] The inside of support rod 811 is sleeved with the surface of support column 812, and the left end of support column 812 is fixedly connected to the right end of movable plate 813.

[0028] The movable plate 813 is slidably connected to the surface of the stirring shaft 801, and the bottom end of the stirring shaft 801 is connected to the bottom end of the mixing tank 1.

[0029] A support frame 2 is fixedly connected to the bottom of the mixing tank 1, and several support frames 2 are provided.

[0030] The top of the mixing tank 1 is hinged to the bottom of the tank cover 3. The top of the tank cover 3 is fixedly connected to the feed pipe 4 and the top of the tank cover 3 is fixedly connected to the water inlet pipe 5.

[0031] A discharge pipe 6 is fixedly connected to the bottom of the mixing tank 1. A discharge valve 7 is connected to the surface of the discharge pipe 6. A filter plate is installed on the inner wall of the discharge pipe 6.

[0032] The implementation principle of the papermaking agitator for preventing lignin fiber oxidation in this embodiment is as follows: The electric rotating shaft 803 starts to rotate under the drive of a motor, and the rotating block 804 at its right end rotates accordingly. The rotation of the rotating block 804 drives the connecting block 805, which is fixedly connected to it, to rotate. The connecting block 805 then drives the stirring blade 806 to rotate, thereby achieving stirring of the pulp in the mixing tank 1. To prevent the stirring blade 806 from rotating excessively, a connecting plate 807 is fixedly connected to the rear end of the rotating block 804. When the rotating block 804 rotates, the connecting plate 807 rotates synchronously. A connecting column 808 is fixedly connected inside the connecting plate 807, and a support rod 809 is drivenly connected to the surface of the connecting column 808. The rotation of the connecting plate 807 drives the support rod 809 to move up and down through the connecting column 808.

[0033] The up-and-down movement of support rod 809 causes the fixed plate 810, which is fixedly connected to its bottom end, to move up and down, and the fixed plate 810 then causes support rod 811 to move up and down.

[0034] Since the support rod 811 is sleeved on the surface of the support column 812, and the left end of the support column 812 is fixedly connected to the right end of the movable plate 813, the up and down movement of the support rod 811 will cause the movable plate 813 to move up and down on the surface of the stirring shaft 801.

[0035] The sleeved design of support rod 811 and support column 812, and the sliding connection between movable plate 813 and stirring shaft 801, allow these components to be easily disassembled and installed when disassembly and maintenance are required, facilitating the maintenance and upkeep of the stirring mechanism 8. Through the rational design of the stirring mechanism 8, the oxidation reaction during the stirring process can be effectively controlled, thereby improving pulp quality, reducing fiber damage, and ultimately enhancing the quality of paper products.

[0036] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A papermaking agitator for preventing the oxidation of lignin fibers, characterized in that, The system includes a mixing tank (1), which is equipped with a stirring mechanism (8). The stirring mechanism (8) includes a stirring shaft (801), a transmission sleeve (802) is fixedly connected to the surface of the stirring shaft (801), an electric rotating shaft (803) is drivenly connected to the surface of the transmission sleeve (802), a rotating block (804) is fixedly connected to the right end of the electric rotating shaft (803), a connecting block (805) is fixedly connected to the right end of the rotating block (804), and a stirring blade (806) is fixedly connected to the right end of the connecting block (805).

2. The papermaking agitator for preventing lignin fiber oxidation as described in claim 1, characterized in that: The stirring mechanism (8) also includes a connecting plate (807), the front end of which is fixedly connected to the rear end of the rotating block (804).

3. The papermaking agitator for preventing lignin fiber oxidation as described in claim 2, characterized in that: The connecting plate (807) is fixedly connected to a connecting column (808), and a support rod (809) is connected to the surface of the connecting column (808).

4. The papermaking agitator for preventing lignin fiber oxidation as described in claim 3, characterized in that: The bottom end of the first support rod (809) is fixedly connected to a fixing plate (810), and the bottom end of the fixing plate (810) is fixedly connected to a second support rod (811).

5. The papermaking agitator for preventing lignin fiber oxidation as described in claim 4, characterized in that: The inside of the second support rod (811) is sleeved with the surface of the support column (812), and the left end of the support column (812) is fixedly connected to the right end of the movable plate (813).

6. The papermaking agitator for preventing lignin fiber oxidation as described in claim 5, characterized in that: The movable plate (813) is slidably connected to the surface of the stirring shaft (801), and the bottom end of the stirring shaft (801) is connected to the bottom end of the mixing tank (1) via transmission.

7. The papermaking agitator for preventing lignin fiber oxidation as described in claim 1, characterized in that: The bottom of the mixing tank (1) is fixedly connected to a support frame (2), and there are several support frames (2).

8. The papermaking agitator for preventing lignin fiber oxidation as described in claim 1, characterized in that: The top of the mixing tank (1) is hinged to the bottom of the tank cover (3), and the top of the tank cover (3) is fixedly connected to the feed pipe (4) and the top of the tank cover (3) is fixedly connected to the water inlet pipe (5).

9. The papermaking agitator for preventing lignin fiber oxidation as described in claim 1, characterized in that: The bottom of the mixing tank (1) is fixedly connected to a discharge pipe (6), and a discharge valve (7) is connected to the surface of the discharge pipe (6). A filter plate is installed on the inner wall of the discharge pipe (6).

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