Pulper feeding buffer device in papermaking equipment

Abstract

The utility model provides a pulper feeding buffer device in papermaking equipment, the pulper comprises a pulping tank used for pulping pulp, the buffer device comprises a baffle plate, the baffle plate is configured on a path where the pulp falls to the bottom of the pulping tank, the baffle plate is obliquely arranged relative to the bottom surface of the pulping tank, and the baffle plate is a rectangular baffle plate; the fixing frame is configured to be fixedly connected with the side wall of the pulping tank; one end of each lifting device is fixedly connected with the baffle, the other end of each lifting device is fixedly connected with the fixing frame, and the four lifting devices are arranged at the four corners of the baffle respectively; the four lifting devices are configured to be controlled to adjust the heights of the four corners of the baffle correspondingly, and the inclination direction and the inclination degree of the baffle are controlled. The buffering device can reduce damage to the pulper in the pulp feeding process.

Description

Technical Field

[0001] This application relates to the field of papermaking, and more specifically, to a pulper feeding buffer device in papermaking equipment. Background Technology

[0002] In the papermaking process, pulpers play a crucial role in the pulping stage, primarily used to break down waste paper, pulp, and other raw materials into fiber suspensions, providing the raw material base for subsequent papermaking processes. However, existing pulpers generate significant impact force during material feeding due to the pulp's mass and falling height. This causes wear and tear on the pulper rotor impeller, shortens the lifespan of the transmission system, increases maintenance frequency, and impacts production. Utility Model Content

[0003] This application provides a pulper feeding buffer device in papermaking equipment, which can reduce damage to the pulper during the pulp feeding process.

[0004] Specifically, this application is implemented through the following technical solution:

[0005] This application provides a pulper feeding buffer device for papermaking equipment, wherein the pulper includes a pulping tank for breaking up pulp, and the buffer device includes:

[0006] A baffle is disposed on the path of the slurry falling to the bottom of the pulping tank, and the baffle is inclined relative to the bottom surface of the pulping tank. The baffle is a rectangular baffle.

[0007] A fixing frame, the fixing frame being configured to be fixedly connected to the side wall of the pulping tank;

[0008] A lifting device, one end of which is fixedly connected to the baffle, and the other end of which is fixedly connected to the fixed frame, comprises four lifting devices, which are respectively arranged at the four corners of the baffle;

[0009] The four lifting devices are configured to controllably adjust the height of the four corners of the baffle, thereby controlling the tilt direction and degree of the baffle.

[0010] Optionally, the baffle has a blade on the side facing away from the fixing frame. The blade is rotatably connected to the baffle. The baffle has at least three mounting parts, which are detachably mounted to the blade. The three mounting parts are on opposite lines.

[0011] Optionally, the lifting device includes an elastic component configured to compress and absorb impact energy when the slurry falls onto the baffle.

[0012] Optionally, the baffle and the fixing frame are respectively provided with openings facing each other;

[0013] The lifting device further includes a lifting rod that passes through the opening in the baffle and the opening in the fixed frame. The elastic component is a spring. The spring surrounds the lifting rod and is located between the baffle and the fixed frame. A first pre-tensioning member is provided at the first end of the lifting rod that passes through the baffle, and a second pre-tensioning member is provided at the second end of the lifting rod that passes through the fixed frame.

[0014] Optionally, a first flexible pad is provided between the first pretensioner and the baffle; and / or

[0015] The first pretensioner is made of magnetic material, and the fixing frame is provided with a second magnetic block, which is directly opposite the first pretensioner, and the first pretensioner and the second magnetic block have the same magnetism; and / or

[0016] The side of the baffle facing away from the fixing frame is curved.

[0017] Optionally, the fixing frame includes four support rods, which are respectively fixed to the four corners of the baffle. Each support rod includes a first sub-rod and a second sub-rod. The first sub-rod is fixedly connected to the baffle, and the second sub-rod is configured to pass through the pulping trough and be fixed to the ground.

[0018] Optionally, the first sub-rod and the second sub-rod are fixed to each other by flanges.

[0019] Optionally, the mounting bracket further includes a base disposed outside the pulping trough and fixed to the ground, the second sub-rod being fixed to the base, and the four support rods corresponding to the four bases.

[0020] Optionally, the base includes reinforcing bars and concrete poured outside the steel pipe, and the first sub-rod is welded to the reinforcing bars.

[0021] This application provides a buffer device for feeding pulpers in papermaking equipment. The buffer device includes a baffle, a fixed frame, and lifting devices. Firstly, because the baffle is inclined and fixed relative to the pulp trough, when pulp is fed into the pulp trough, the pulp first falls onto the baffle and then flows down the inclined direction of the baffle into the bottom of the pulp trough. Compared to the pulp falling directly into the bottom of the pulp trough, the baffle provided in this application can partially block the pulp during its descent, dissipating some of the impact force and thus reducing the impact force when the pulp falls into the pulp trough. This also reduces the impact damage to the impeller at the bottom of the pulp trough. Through the control of four lifting devices, the pulp's landing point can be distributed across the bottom surface of the pulp trough, reducing the cumulative impact force and uneven mixing problems caused by a single landing point. Attached Figure Description

[0022] Figure 1This is a top view of a buffer device shown in an exemplary embodiment of this application;

[0023] Figure 2 This is a front view of a buffer device shown in an exemplary embodiment of this application;

[0024] Figure 3 This is a side view of a buffer device shown in an exemplary embodiment of this application;

[0025] Figure 4 yes Figure 3 Schematic diagram of the lifting component on the left side;

[0026] Figure 5 yes Figure 3 Schematic diagram of the lifting component on the right side;

[0027] Figure 6 This is a top view of a pulper shown in an exemplary embodiment of this application;

[0028] Figure 7 This is a side view of a pulper shown in an exemplary embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the front of the baffle shown in an exemplary embodiment of this application;

[0030] Figure 9 This is a schematic diagram of the bottom surface of the baffle shown in an exemplary embodiment of this application.

[0031] Among them, A is the pulping tank; B is the pulp conveyor belt; C is the impeller; 100 is the baffle; 110 is the blade; 120 is the mounting part; 200 is the fixing frame; 210 is the support rod; 211 is the first sub-rod; 212 is the second sub-rod; 213 is the flange; 220 is the base; 300 is the lifting device; 310 is the lifting rod body; 311 is the first end; 312 is the second end; 400 is the elastic component; 510 is the first pre-tightening component; 520 is the second pre-tightening component; 530 is the first flexible pad; and 540 is the second magnetic block. Detailed Implementation

[0032] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0034] This application provides a buffer device for feeding pulpers in papermaking equipment. Combined with... Figure 1 , Figure 5 and Figure 7 The pulper includes a pulping trough A for breaking up pulp. The buffer device includes a baffle 100, a fixing frame 200, and a lifting device 300. (Refer to the figure.) Figure 2 Baffle 100 is positioned along the path of the slurry falling to the bottom of the pulping tank A. The slurry falling path is as follows: Figure 7 The arrowed lines indicate this. The baffle 100 is inclined relative to the bottom surface of the pulping tank A, and is a rectangular baffle, including squares and rectangles. The fixing frame 200 is configured to be fixedly connected to the side wall of the pulping tank A. Firstly, because the baffle 100 is inclined and fixed relative to the pulping tank A, when pulp is fed into the pulping tank A, the pulp will first fall onto the baffle 100, and then fall into the bottom of the pulping tank A along the inclined direction of the baffle A. Compared to the pulp falling directly into the bottom of the pulping tank A, the baffle 100 provided in this application can block the pulp during its fall, dissipating some of the impact force, thereby reducing the impact force when the pulp falls into the pulping tank A, and thus reducing the impact damage to the impeller at the bottom of the pulping tank A.

[0035] Furthermore, this application also includes lifting devices 300, one end of which is fixedly connected to the baffle 100, and the other end of which is fixedly connected to the fixing frame 200. Four lifting devices 300 are included, respectively disposed at the four corners of the baffle 100. Since the baffle 100 is rectangular, the four corners of the baffle 100 are the four corners of a rectangle. The four lifting devices 300 are configured to be controlled to adjust the height of the four corners of the baffle 100, thereby controlling the tilt direction and degree of the baffle 100. Adjusting the height of the four lifting devices 300, and thus adjusting the height of the four corners of the baffle 100, also allows adjustment of the tilt direction and degree of the baffle 100. That is, based on the baffle 100 already being tilted, it can be adjusted to tilt in any direction. Specific tilt directions may include tilting towards any side of the rectangular baffle or tilting towards any corner. As shown in the schematic diagram of this application... Figure 3 and Figure 7 In this design, the baffle 100 is tilted towards the side closest to the feed position at an angle of 45°. This application allows for adjustment of the tilt angle using four lifting devices 300, which controls the landing point of the added slurry on the bottom surface of the pulping tank A. For example, the angle of the baffle 100 can be adjusted at regular intervals. By controlling the four lifting devices 300, the landing points of the slurry can be distributed across the bottom surface of the pulping tank A, reducing the cumulative impact force and uneven mixing problems caused by a single landing point.

[0036] In one embodiment, combined with Figure 8 and Figure 9A blade 110 is provided on the side of the baffle 100 facing away from the fixing frame 200. The blade 110 is rotatably connected to the baffle 100. The baffle 100 is equipped with at least three mounting parts 120, which are detachably installed with the blade 110. The three mounting parts 120 are arranged in pairs, not on the same line. First, when the slurry falls onto the blade 110, due to the impact force of the slurry and the presence of the blade 110, the slurry will hit the blade 110, causing the slurry to be broken up or cut, and then fall into the bottom of the pulping tank A for pulping. The initial breaking up of the slurry by the blade 110 makes the slurry easier to break up in the subsequent pulping process. Furthermore, due to the rotatable blade 110 mounted on the baffle 100 and the mounting portion for fixing the blade 110, the blade 110 has at least three mountable positions. Depending on the tilt direction of the baffle 100, the blade 110 can be rotated to a similar mounting position, allowing the slurry to contact the blade 110 over a larger area, thus improving the initial dispersing effect. In addition, more mounting portions can be provided, such as two mounting portions 120 at each mounting position of the blade 110, making the mounting of the blade 110 to the baffle 100 more stable. Alternatively, multiple mounting positions can be provided through the distribution of the mounting portions 120, making the tilt directions of the blade 110 and the baffle 100 closer.

[0037] In one embodiment, combined with Figure 4 and Figure 5 The lifting device 300 includes an elastic component 400, which is configured to compress and absorb impact energy when slurry falls onto the baffle 100. The elastic component 400 can be fitted onto the outside of the lifting device 300, disposed inside the lifting device 300, or located at the connection between the lifting device 300 and the baffle 100 or the fixing frame 200. The elastic component 400 can be composed of springs, rubber pads, etc. The elastic component 400 can reduce excessive stress impact on the baffle 100 and the lifting device 300 caused by instantaneous strong impacts, effectively protecting the structural integrity of the device and further dissipating the impact force of the falling slurry.

[0038] In one embodiment, combined with Figure 4 and Figure 5The baffle 100 and the fixing frame 200 are respectively provided with openings facing each other; the lifting device 300 also includes a lifting rod 310 passing through the openings of the baffle 100 and the fixing frame 200. The elastic component 400 is a spring, which surrounds the lifting rod 310 and is located between the baffle 100 and the fixing frame 200. The first end 311 of the lifting rod 310 that extends out of the baffle 100 is provided with a first pre-tensioning member 510, and the second end 312 of the lifting rod 310 that extends out of the fixing frame 200 is provided with a second pre-tensioning member 520. Among them, the spring, as an elastic component, surrounds the outside of the lifting rod 310 and is located between the baffle 100 and the fixing frame 200. It provides a flexible buffer for the lifting movement and, relying on its own elastic properties, effectively absorbs and releases the impact force generated when the slurry falls. The first preload member 510 and the second preload member 520, on the one hand, apply a preload force to the spring to ensure its initial tension, so that the entire structure maintains stable initial deformation when not subjected to external force; on the other hand, the fixing effect of the preload members effectively prevents the risk of loosening of the components under long-term vibration or impact loads, significantly improving the durability and reliability of the overall structure. The first preload member 510 and the second preload member 520 can be connected to the lifting rod body 310 by means of a threaded connection.

[0039] In one embodiment, combined with Figure 4 and Figure 5 A first flexible pad 530 is provided in front of the first pretensioner 510 and the baffle 100. The first flexible pad 530 will deform under the pressure of the inclined baffle 100 and the first pretensioner 510, thereby filling the space between the inclined baffle 100 and the first pretensioner 510.

[0040] In another embodiment, the first pre-tightening member 510 is made of magnetic material, and the fixing frame 200 is provided with a second magnetic block 540, which is directly opposite the first pre-tightening member 510, and the first pre-tightening member 510 and the second magnetic block 540 have the same magnetism. According to the principle that like poles repel each other, the repulsive force generated between the first pre-tightening member 510 and the second magnetic block 540 can effectively counteract or alleviate the impact force generated by the falling slurry.

[0041] In another embodiment, the side of the baffle 100 facing away from the fixing frame 200 is curved. The curved surface can effectively buffer the impact force of the slurry. When the slurry falls and impacts the curved surface, the shape of the curved surface increases the contact area between the slurry and the baffle, dispersing the impact force over a larger area, thereby reducing local stress concentration. This helps to reduce the impact force of the slurry on the baffle 100.

[0042] In one embodiment, combined with Figure 1 , Figure 2 , Figure 6 and Figure 7The mounting bracket 200 includes four support rods 210, which are fixed to the four corners of the baffle 100. Each support rod 210 includes a first sub-rod 211 and a second sub-rod 212. The first sub-rod 211 is fixedly connected to the baffle 100, and the second sub-rod 212 is configured to pass through the slurry trough A and be fixed to the ground. During installation, the first sub-rod 211 can be connected and fixed to the baffle 100 first, then the second sub-rod 212 can be passed through the slurry trough A and fixed to the ground, and then the first sub-rod 211 and the second sub-rod 212 can be connected. This step-by-step installation method reduces installation difficulty and improves installation efficiency. If the baffle 100 needs to be inspected or replaced, this structure also facilitates disassembly and reinstallation. Fixing the buffer device of this application to the ground using the mounting bracket 200 forms a stable support structure. Moreover, the ground's support for the device is the most direct and reliable, effectively resisting impact forces.

[0043] In one embodiment, the first sub-rod 211 and the second sub-rod 212 are fixed to each other by a flange 213. The flange 213 connection allows for quick installation and disassembly, making the assembly and disassembly of the support rod 210 more convenient, simplifying the installation process, and improving installation efficiency.

[0044] In one embodiment, combined with Figure 3 and Figure 6 The mounting bracket 200 also includes a base 220, which is positioned outside the pulping tank A and fixed to the ground. The second sub-rod 212 is fixed to the base 220. Four support rods 210 correspond to four bases 220. The heights of the four bases 220 can be equal in pairs with a certain height difference, so that the baffle 100 is initially tilted. The tilt direction and degree of the baffle 100 can then be further adjusted by the lifting device 300. Fixing the base 220 to the ground enhances the stability and impact resistance of the entire device.

[0045] In one embodiment, the base 220 includes reinforcing bars and concrete poured outside the steel pipe, and the second sub-rod 212 is welded to the reinforcing bars. The base 220, through the combination of reinforcing bars and concrete, fully utilizes the tensile strength of the reinforcing bars and the compressive strength of the concrete, achieving excellent robustness.

[0046] Combination Figure 6In addition to 7, this application also provides a pulper, including a buffer device, a pulping tank A, a pulp conveyor belt B, and an impeller C provided in any of the above embodiments. The top of the pulp conveyor belt B is higher than the opening of the pulping tank A, for conveying pulp from the opening into the interior of the pulping tank A. The impeller C is installed at the bottom of the pulping tank A. The baffle 100 of the buffer device is inclined toward the pulp conveyor belt B; and / or the baffle 100 is inclined away from the pulp conveyor belt B. When the baffle 100 is inclined toward the pulp conveyor belt B, it can better catch the pulp falling from the conveyor belt, increasing the contact area with the pulp, thereby more effectively buffering the impact force of the pulp. When the baffle 100 is inclined away from the pulp conveyor belt B, the pulp can slide more smoothly along the baffle 100 into the interior of the pulping tank A under the action of gravity, reducing the residence time of the pulp on the baffle 100 and preventing pulp accumulation and blockage.

[0047] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A pulper feeding buffer device in papermaking equipment, characterized in that, The pulper includes a pulping tank (A) for breaking up pulp, and the buffer device includes: A baffle (100) is disposed on the path of the slurry falling to the bottom of the pulping tank (A), and the baffle (100) is inclined relative to the bottom surface of the pulping tank (A). The baffle (100) is a rectangular baffle (100). A fixing frame (200) is configured to be fixedly connected to the side wall of the pulping tank (A); The lifting device (300) is fixedly connected at one end to the baffle (100) and at the other end to the fixed frame (200). The lifting device (300) includes four devices, which are respectively arranged at the four corners of the baffle (100). The four lifting devices (300) are configured to controllably adjust the height of the four corners of the baffle (100) respectively, thereby controlling the tilt direction and degree of the baffle (100).

2. The pulper feeding buffer device in the papermaking equipment as described in claim 1, characterized in that, The baffle (100) has a blade (110) on the side facing away from the fixing frame (200). The blade (110) is rotatably connected to the baffle (100). The baffle (100) is equipped with at least three mounting parts (120). The three mounting parts (120) are detachably mounted to the blade (110). The three mounting parts (120) are on different lines in pairs.

3. The pulper feeding buffer device in the papermaking equipment as described in claim 1, characterized in that, The lifting device (300) includes an elastic component (400) configured to compress and absorb impact energy when the slurry falls onto the baffle (100).

4. The pulper feeding buffer device in the papermaking equipment as described in claim 3, characterized in that, The baffle (100) and the fixing frame (200) are respectively provided with openings facing each other; The lifting device (300) further includes a lifting rod (310) passing through the opening in the baffle (100) and the opening in the fixing frame (200). The elastic component (400) is a spring, which surrounds the lifting rod (310) and is located between the baffle (100) and the fixing frame (200). The first end (311) of the lifting rod (310) that extends out of the baffle (100) is provided with a first pretensioner (510), and the second end (312) of the lifting rod (310) that extends out of the fixing frame (200) is provided with a second pretensioner (520).

5. The pulper feeding buffer device in the papermaking equipment as described in claim 4, characterized in that, A first flexible pad (530) is provided before the first pretensioner (510) and the baffle (100); and / or The first pretensioner (510) is made of magnetic material, and the fixing frame (200) is provided with a second magnetic block (540) directly opposite the first pretensioner (510), and the first pretensioner (510) and the second magnetic block (540) have the same magnetism; and / or The side of the baffle (100) facing away from the fixing frame (200) is an arc surface.

6. The pulper feeding buffer device in the papermaking equipment as described in any one of claims 1 to 5, characterized in that, The fixing frame (200) includes four support rods (210) fixed at the four corners of the baffle (100). Each support rod (210) includes a first sub-rod (211) and a second sub-rod (212). The first sub-rod (211) is fixedly connected to the baffle (100), and the second sub-rod (212) is configured to pass through the pulping trough (A) and is fixed to the ground.

7. The pulper feeding buffer device in the papermaking equipment as described in claim 6, characterized in that, The first sub-rod (211) and the second sub-rod (212) are fixed to each other by a flange (213).

8. The pulper feeding buffer device in the papermaking equipment as described in claim 6, characterized in that, The mounting bracket (200) also includes a base (220) which is disposed outside the pulping trough (A) and fixed to the ground. The second sub-rod (212) is fixed to the base (220), and the four support rods (210) correspond to the four bases (220).

9. The pulper feeding buffer device in the papermaking equipment as described in claim 8, characterized in that, The base (220) includes reinforcing bars and concrete poured outside the steel pipe, and the first sub-rod (211) is welded to the reinforcing bars.

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