A paper product manufacturing pulp impurity cleaning equipment

Abstract

This utility model discloses a pulp impurity cleaning device for paper product production, relating to the field of paper product manufacturing technology. The utility model includes a housing, a backflush anti-clogging component, and an automatic impurity cleaning component. A filter screen is fixedly connected between the two sides of the inner cavity of the housing, and a discharge pipe is connected to the right side of the housing. The backflush anti-clogging component includes a backflush hood. This utility model utilizes the intermittent high-pressure gas generated by a pulsed airflow delivery mechanism, combined with a rotatable backflush hood, to impact the mesh of the filter screen. This causes small particles of impurities clogging the filter screen pores to be instantly blown away by the high-pressure airflow, ensuring that blockages in different areas of the filter screen are effectively removed. This avoids the localized residue problems caused by traditional unidirectional cleaning. The electric cylinder-driven squeezing block further reinforces the positioning of the backflush hood, enhancing the stability of the concentrated airflow injection and significantly reducing the frequency of filter screen clogging.

Description

Technical Field

[0001] This utility model belongs to the field of paper product manufacturing technology, and in particular relates to a paper product pulp impurity cleaning device. Background Technology

[0002] Paper product manufacturing refers to the process of producing various types of paper and paper products using plant fibers or other fiber raw materials through pulping, papermaking, and processing. During the production process, wood chips, bark, and other raw materials containing impurities are used, and these impurities are easily present in the pulp in the form of paper scraps. In particular, when using waste paper as raw material to manufacture recycled paper, the pulp contains even more impurities. Therefore, it is necessary to use pulp impurity cleaning equipment to clean the impurities in the pulp.

[0003] Chinese patent application CN219908381U discloses a pulp descaling device for paper product manufacturing, including a pulp tank, a terminal inlet pipe connected to the top of the pulp tank, a pulp conveying pipe connected to the terminal inlet pipe, an anti-clogging filter device and a rotary descaling device installed on the inner and outer walls of the pulp tank, and a pulp outlet pipe connected to the lower end of the pulp tank. The anti-clogging filter device can remove large-volume and large-mass impurities from the pulp, and the anti-clogging filter device can ensure that it is not blocked, thereby ensuring the continuous operation of the pulp descaling device for paper product manufacturing. The rotary descaling device can collect small-volume impurities and break down some pulp residue, so that it exists in the pulp in a qualified form. By performing two descaling treatments on the pulp, the pulp descaling device can effectively remove pulp residue, thereby making the pulp purer and ensuring the excellent quality of the manufactured paper products.

[0004] Although this patented anti-clogging and secondary processing rotary slag removal device can effectively remove paper residue from pulp, making the pulp purer and ensuring the superior quality of the manufactured paper products, the anti-clogging filter device of this patented device uses an electric push rod to drive the vertical plate and arc-shaped shovel to clean the impurities on the filter screen surface. It can only push larger impurities into the slag storage box, while some small particles of impurities will clog the holes in the filter screen. This prevents the filter screen from properly cleaning the pulp, requiring frequent machine shutdowns for cleaning, increasing the difficulty of operation for workers, and reducing the efficiency of pulp impurity cleaning.

[0005] To address these issues, we provide a pulp impurity cleaning device for paper product manufacturing. Utility Model Content

[0006] The purpose of this invention is to provide a pulp impurity cleaning device for paper product production. By combining the back-flushing anti-clogging component and the automatic impurity cleaning component, it solves the problem in the prior art that the pulp impurity cleaning device for paper product production is easily clogged by small particles of impurities, which leads to frequent machine stops to unclog the filter screen during the pulp impurity cleaning process and reduces the efficiency of pulp impurity cleaning.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a pulp impurity cleaning device for paper product production, comprising a housing, a backflushing anti-clogging component, and an automatic impurity cleaning component. A filter screen is fixedly connected between the two sides of the inner cavity of the housing. A discharge pipe is connected to the right side of the housing. The backflushing anti-clogging component includes a backflushing hood, the rear sides of both sides of which are movably connected to the interior of the housing. A rotary motor is fixedly connected to the rear side of the left side of the housing. The right side of the output end of the rotary motor penetrates the housing and is fixedly connected to the backflushing hood. A pulse airflow conveying mechanism is fixedly connected to the bottom of the rear side of the housing. The air outlet at the top of the pulse airflow conveying mechanism penetrates the housing and communicates with the backflushing hood. The automatic impurity cleaning component includes a servo motor. The right side of the servo motor is fixedly connected to the housing. A screw is fixedly connected to the right side of the output end of the servo motor through the housing. A threaded sleeve is threaded onto the surface of the screw, and a scraper is fixedly connected to the bottom of the threaded sleeve via a cylinder.

[0009] The present invention is further configured such that the top of the shell is connected to a grouting pipe, the bottom of the left side of the shell is connected to a grout discharge pipe, a valve is installed on the surface of the grout discharge pipe, the grouting pipe can transport the pulp to be cleaned to the inner cavity of the shell, the grout discharge pipe can discharge the cleaned pulp out of the shell, and the valve is used to control the opening and closing of the grout discharge pipe.

[0010] The present invention is further configured such that the pulse airflow conveying mechanism includes an air chamber, the front side of which is fixedly connected to the housing, a high-speed motor is fixedly connected to the top of the air chamber, a cam is fixedly connected to the bottom of the output end of the high-speed motor through the air chamber, a piston plate is provided on the right side of the cam, a spring is fixedly connected to the right side of the piston plate, an air inlet pipe and an exhaust pipe are respectively connected to the top and bottom of the right side of the air chamber, and a one-way valve is installed on the surface of both the air inlet pipe and the exhaust pipe. The end of the exhaust pipe away from the air chamber passes through the housing and is connected to the backflush hood. The high-speed motor can control the cam to rotate, and through cooperation with the spring, control the piston plate to move back and forth continuously. By utilizing the cooperation of the air inlet pipe and the exhaust pipe with the one-way valve, the air chamber continuously generates pulse airflow, which is delivered to the inside of the backflush hood through the exhaust pipe. The backflush hood guides the airflow to the filter screen, and pushes out the impurities clogging the filter screen mesh.

[0011] The present invention is further configured such that a sliding rod is fixedly connected to the rear side of the top of the scraper, a sliding sleeve is slidably connected to the surface of the sliding rod, and the front side of the sliding sleeve is fixedly connected to a threaded sleeve. The sliding rod and the sliding sleeve can limit the scraper, enabling it to move up and down stably and preventing it from deviating during the movement.

[0012] The present invention is further configured such that a guide rail is fixedly connected to the top of the inner cavity of the housing, a linear bearing is slidably connected to the surface of the guide rail, and the bottom of the linear bearing is fixedly connected to the threaded sleeve. The guide rail and the linear bearing can limit the threaded sleeve, enabling it to move stably left and right and preventing it from rotating.

[0013] The present invention is further configured such that an electric cylinder is fixedly connected to the front side of the left side of the housing via a mounting bracket, and an extrusion block is fixedly connected to the right side of the output end of the electric cylinder. The right side of the extrusion block extends through the inner cavity of the housing. The mounting bracket is used to increase the stability of the electric cylinder installation and fixation. The electric cylinder can control the extrusion block to move, so that it can stably position and fix the backflush cover.

[0014] The present invention is further configured such that a positioning opening for use with the extrusion block is provided on the left side of the housing, and an inclined slope is provided on the top right side of the extrusion block. The positioning opening facilitates the left and right movement of the extrusion block, and the inclined slope can extrude the edge of the backflush hood, thereby improving the tightness of the contact between the backflush hood and the filter screen.

[0015] The present invention is further configured such that a control panel is fixedly connected to the front side of the housing, and support frames are fixedly connected to both sides of the bottom of the housing. The control panel can control the entire device, and the support frames are used to increase the stability of the housing during operation.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model utilizes a back-flushing anti-clogging component, employing intermittent high-pressure gas generated by a pulsed airflow delivery mechanism, in conjunction with a rotatable back-flushing hood, to impact the filter screen's mesh openings. This causes small particles of impurities clogging the filter screen's pores to be instantly blown away by the high-pressure airflow, ensuring that blockages in different areas of the filter screen can be effectively removed. This avoids the localized residue problems caused by traditional unidirectional cleaning. Combined with an electric cylinder-driven extrusion block that reinforces the positioning of the back-flushing hood, the stability of the concentrated airflow injection is further enhanced, thereby significantly reducing the frequency of filter screen clogging, reducing the number of downtime cleanings, and improving the continuous cleaning efficiency of pulp impurities.

[0018] 2. This utility model utilizes an automatic cleaning component, employing a servo motor to drive a screw that moves a threaded sleeve laterally. A cylinder controls the lifting and lowering of the scraper, causing the scraper to perform a cyclical operation of pushing and resetting impurities on the filter screen surface. When the scraper contacts the filter screen, it closely scrapes away accumulated impurities and pushes them into the discharge pipe. Impurities are continuously pushed into the discharge pipe and discharged centrally. The entire process requires no manual intervention, solving the problem of frequent machine shutdowns and manual cleaning of filter screen surface impurities required by traditional equipment. This effectively reduces operational difficulty and improves automated cleaning efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 A perspective view of a pulp impurity cleaning device used in paper product manufacturing;

[0021] Figure 2 A side view of a pulp impurity cleaning device used in paper product manufacturing;

[0022] Figure 3 A cross-sectional view of the casing of a pulp impurity cleaning device for paper product production;

[0023] Figure 4 A partial cross-sectional view of the casing of a pulp impurity cleaning device for paper product production;

[0024] Figure 5 This is a cross-sectional view of the air chamber in a pulp impurity cleaning device for paper product production.

[0025] In the attached diagram: 1. Housing; 2. Filter screen; 3. Impurity discharge pipe; 4. Backflush anti-clogging component; 41. Backflush hood; 42. Rotary motor; 43. Pulse airflow conveying mechanism; 5. Automatic impurity removal component; 51. Servo motor; 52. Screw; 53. Threaded sleeve; 54. Cylinder; 55. Scraper; 6. Grouting pipe; 7. Grout discharge pipe; 431. Air chamber; 432. High-speed motor; 433. Cam; 434. Piston plate; 435. Spring; 436. Air inlet pipe; 437. Exhaust pipe; 438. One-way valve; 8. Electric cylinder; 9. Extrusion block. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Please see Figure 1-5This utility model is a pulp impurity cleaning device for paper product production, including a housing 1, a backflushing and anti-clogging component 4, and an automatic impurity cleaning component 5. A filter screen 2 is fixedly connected between the two sides of the inner cavity of the housing 1. A discharge pipe 3 is connected to the right side of the housing 1. The backflushing and anti-clogging component 4 includes a backflushing cover 41. The rear sides of both sides of the backflushing cover 41 are movably connected to the interior of the housing 1. A rotary motor 42 is fixedly connected to the rear side of the left side of the housing 1. The right side of the output end of the rotary motor 42 passes through the housing 1 and is fixedly connected to the backflushing cover 41. A pulse airflow conveying mechanism 43 is fixedly connected to the bottom of the rear side of the housing 1. The air outlet at the top of the pulse airflow conveying mechanism 43 passes through the housing 1 and is connected to the backflushing cover 41. The automatic impurity cleaning component 5 includes a servo motor 51. The right side of the servo motor 51 is fixedly connected to the housing 1. The right side of the output end of the servo motor 51 passes through the housing 1 and is fixedly connected to a screw 52. A threaded sleeve 53 is threadedly connected to the surface of the screw 52. A scraper 55 is fixedly connected to the bottom of the threaded sleeve 53 through a cylinder 54.

[0029] Specifically: Filter screen 2 is used to filter impurities in pulp. Impurity discharge pipe 3 can discharge the impurities filtered by filter screen 2 into housing 1. Backflush hood 41 can concentrate the pulse airflow generated by pulse airflow conveying mechanism 43 and spray it onto filter screen 2, so that small particles of impurities blocked inside the mesh of filter screen 2 are blown out, preventing them from remaining in the mesh and causing filter screen 2 to fail to filter normally. Rotary motor 42 is used to control the rotation of backflush hood 41. When filter screen 2 needs to be cleaned, it can be moved to the bottom of filter screen 2. Servo motor 51 can cooperate with screw 52 to control the movement of threaded sleeve 53 and cylinder 54. Cylinder 54 is used to adjust the working height of scraper 55 so that scraper 55 contacts the surface of filter screen 2. During the movement of scraper 55, impurities are pushed to impurity discharge pipe 3. When pushing impurities, scraper 55 is in contact with filter screen 2. When scraper 55 is reset, cylinder 54 controls scraper 55 to lift up and not contact filter screen 2. By repeating the above operation, impurities on the top of filter screen 2 can be continuously pushed into impurity discharge pipe 3.

[0030] Example 2

[0031] Please see Figure 1-5Based on Embodiment 1, the top of the housing 1 is connected to a grouting pipe 6, and the bottom left side of the housing 1 is connected to a grout discharge pipe 7. A valve is installed on the surface of the grout discharge pipe 7. The pulse airflow conveying mechanism 43 includes an air chamber 431. The front side of the air chamber 431 is fixedly connected to the housing 1. A high-speed motor 432 is fixedly connected to the top of the air chamber 431. The bottom of the output end of the high-speed motor 432 passes through the air chamber 431 and is fixedly connected to a cam 433. A piston plate 434 is provided on the right side of the cam 433. A spring 435 is fixedly connected to the right side of the piston plate 434. The top and bottom right sides of the air chamber 431 are respectively connected to an air inlet pipe 436 and an exhaust pipe 437. A one-way valve 438 is installed on the surface of both the air inlet pipe 436 and the exhaust pipe 437. The exhaust pipe 437 is away from the air chamber 431. One end of 31 passes through the housing 1 and communicates with the backflush hood 41. A sliding rod is fixedly connected to the rear side of the top of the scraper 55. A sliding sleeve is slidably connected to the surface of the sliding rod. The front side of the sliding sleeve is fixedly connected to the threaded sleeve 53. A guide rail is fixedly connected to the top of the inner cavity of the housing 1. A linear bearing is slidably connected to the surface of the guide rail. The bottom of the linear bearing is fixedly connected to the threaded sleeve 53. An electric cylinder 8 is fixedly connected to the front side of the left side of the housing 1 through a mounting bracket. An extrusion block 9 is fixedly connected to the right side of the output end of the electric cylinder 8. The right side of the extrusion block 9 passes through the inner cavity of the housing 1. A positioning opening for use with the extrusion block 9 is opened on the left side of the housing 1. An inclined slope is opened on the top of the right side of the extrusion block 9. A control panel is fixedly connected to the front side of the housing 1. Support frames are fixedly connected to both sides of the bottom of the housing 1.

[0032] Specifically: the grouting pipe 6 can transport the pulp to be cleaned to the inner cavity of the housing 1; the grout discharge pipe 7 can discharge the cleaned pulp from the housing 1; the valve is used to control the opening and closing of the grout discharge pipe 7; the high-speed motor 432 can control the cam 433 to rotate; and through cooperation with the spring 435, it controls the piston plate 434 to move back and forth continuously. Using the cooperation of the air inlet pipe 436 and the exhaust pipe 437 with the one-way valve 438, the air chamber 431 continuously generates pulsed airflow. The pulsed airflow is delivered to the inside of the backflush hood 41 through the exhaust pipe 437. The backflush hood 41 guides the airflow to the filter screen 2, pushing out the impurities clogging the mesh of the filter screen 2; the sliding rod and the sliding sleeve can limit the movement of the scraper 55. This allows it to move stably up and down, preventing it from deviating during movement. The guide rail and linear bearing limit the threaded sleeve 53, allowing it to move stably left and right, preventing it from rotating. The mounting bracket increases the stability of the electric cylinder 8. The electric cylinder 8 controls the movement of the extrusion block 9, allowing it to stably position and fix the back-blowing cover 41. The positioning opening facilitates the left and right movement of the extrusion block 9. The inclined slope can extrude the edge of the back-blowing cover 41, improving the tightness of the contact between the back-blowing cover 41 and the filter screen 2. The control panel controls the entire device, and the support frame increases the stability of the housing 1 during operation.

[0033] The working principle of this utility model is as follows: The pulp to be treated is injected into the inner cavity of the housing 1 through the injection pipe 6. After the pulp is filtered by the filter screen 2, the impurities are trapped at the top of the filter screen 2. The cleaned pulp is discharged from the housing 1 through the discharge pipe 7. When a lot of impurities accumulate on the surface and inside the mesh of the filter screen 2, the rotary motor 42 is started, which drives the back-blowing hood 41 to rotate below the filter screen 2. At this time, the electric cylinder 8 pushes the extrusion block 9 to move, and the back-blowing hood 41 is pressed against the bottom of the filter screen 2 by the inclined slope. The high-speed motor 432 in the pulse airflow conveying mechanism 43 drives the cam 433 to rotate. The cam 433 periodically squeezes the piston plate 434 and compresses the spring 435, so that the piston plate 434 moves back and forth in the air chamber 431. External air enters through the air inlet pipe 436. The compressed air chamber 431 forms a pulsed airflow, which is delivered to the backflush hood 41 through the exhaust pipe 437. The high-pressure airflow is ejected from the backflush hood 41 and penetrates the mesh of the filter screen 2, blowing away the small particles of impurities that are clogging the filter screen 2. At the same time, the servo motor 51 drives the screw 52 to rotate, which drives the threaded sleeve 53 to move laterally along the guide rail. The cylinder 54 controls the scraper 55 to descend and contact the surface of the filter screen 2. During the movement, the scraper 55 pushes the large particles of impurities on the top of the filter screen 2 to the discharge pipe 3 for discharge. When the scraper 55 moves to the edge of the filter screen 2, the cylinder 54 drives the scraper 55 to rise and reset. The servo motor 51 reverses to make the scraper 55 return to the initial position and repeat the above cleaning action. Through the above operation, the number of downtime cleanings can be reduced and the efficiency of continuous cleaning of pulp impurities can be improved.

[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A pulp impurity cleaning device for paper product production, comprising a housing (1), a backflushing and anti-clogging component (4), and an automatic impurity cleaning component (5), characterized in that: A filter screen (2) is fixedly connected between the two sides of the inner cavity of the housing (1), and a waste discharge pipe (3) is connected to the right side of the housing (1). The backflush anti-clogging assembly (4) includes a backflush hood (41). The rear sides of both sides of the backflush hood (41) are movably connected to the interior of the housing (1). A rotary motor (42) is fixedly connected to the rear side of the left side of the housing (1). The right side of the output end of the rotary motor (42) passes through the housing (1) and is fixedly connected to the backflush hood (41). A pulse airflow conveying mechanism (43) is fixedly connected to the bottom of the rear side of the housing (1). The air outlet end of the pulse airflow conveying mechanism (43) passes through the housing (1) and communicates with the backflush hood (41). The automatic cleaning component (5) includes a servo motor (51). The right side of the servo motor (51) is fixedly connected to the housing (1). The right side of the output end of the servo motor (51) passes through the housing (1) and is fixedly connected to a screw (52). The surface of the screw (52) is threadedly connected to a threaded sleeve (53). The bottom of the threaded sleeve (53) is fixedly connected to a scraper (55) via a cylinder (54).

2. The paper product pulp impurity cleaning equipment according to claim 1, characterized in that: The top of the housing (1) is connected to a grouting pipe (6), and the bottom of the left side of the housing (1) is connected to a grout discharge pipe (7). A valve is installed on the surface of the grout discharge pipe (7).

3. The paper product pulp impurity cleaning equipment according to claim 1, characterized in that: The pulse airflow delivery mechanism (43) includes an air chamber (431), the front side of which is fixedly connected to the housing (1). A high-speed motor (432) is fixedly connected to the top of the air chamber (431). The bottom of the output end of the high-speed motor (432) passes through the air chamber (431) and is fixedly connected to a cam (433). A piston plate (434) is provided on the right side of the cam (433). A spring (435) is fixedly connected to the right side of the piston plate (434). An air inlet pipe (436) and an exhaust pipe (437) are respectively connected to the top and bottom of the right side of the air chamber (431). A one-way valve (438) is installed on the surface of both the air inlet pipe (436) and the exhaust pipe (437). The end of the exhaust pipe (437) away from the air chamber (431) passes through the housing (1) and is connected to the backflush hood (41).

4. The paper product pulp impurity cleaning equipment according to claim 1, characterized in that: A sliding rod is fixedly connected to the rear side of the top of the scraper (55), and a sliding sleeve is slidably connected to the surface of the sliding rod. The front side of the sliding sleeve is fixedly connected to the threaded sleeve (53).

5. The paper product pulp impurity cleaning equipment according to claim 1, characterized in that: The top of the inner cavity of the housing (1) is fixedly connected to a guide rail, and a linear bearing is slidably connected to the surface of the guide rail. The bottom of the linear bearing is fixedly connected to a threaded sleeve (53).

6. The paper product pulp impurity cleaning equipment according to claim 1, characterized in that: An electric cylinder (8) is fixedly connected to the front left side of the housing (1) via a mounting bracket. An extrusion block (9) is fixedly connected to the right side of the output end of the electric cylinder (8). The right side of the extrusion block (9) extends through the inner cavity of the housing (1).

7. The paper product pulp impurity cleaning equipment according to claim 6, characterized in that: The left side of the housing (1) is provided with a positioning opening for use with the extrusion block (9), and the top right side of the extrusion block (9) is provided with an inclined slope.

8. The paper product pulp impurity cleaning equipment according to claim 1, characterized in that: A control panel is fixedly connected to the front side of the housing (1), and support frames are fixedly connected to both sides of the bottom of the housing (1).

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