Discharging and filtering device of pulping tank

Abstract

The discharging and filtering device of the pulping tank is characterized in that a discharging port is formed in the bottom of the pulping tank, the inner diameter of the discharging port is gradually increased from bottom to top, and a first discharging pipe, a valve and a second discharging pipe which are communicated with one another are sequentially arranged at a lower port of the discharging port; a filtering assembly is arranged in the second discharging pipe and comprises an annular guide plate and a filtering net located below the annular guide plate, and the annular guide plate is detachably connected to the upper portion of the second discharging pipe; the filter screen is arranged in the direction of the cross section of the second discharging pipe and can slide in the direction perpendicular to the axis of the second discharging pipe. The filter screen is arranged in the second discharging pipe, slurry flowing out of the discharging port in the slurry making tank can be filtered in the second discharging pipe, the filter screen can be driven by external force to move in the radius direction of the second discharging pipe, and part of caked conductive carbon materials can be shattered or scattered; the phenomenon that the slurry flows out of the filter screen to the second discharging pipe due to the fact that more cakes block the filter holes of the filter screen is reduced, and smooth flowing out of the slurry is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of pulping tank discharge, in particular to a pulping tank discharge filtering device. Background Art

[0002] The preparation of carbon-coated aluminum foil involves uniformly coating the surface of the aluminum foil with a conductive carbon material (such as graphite, carbon nanotubes, and graphene) to improve its conductivity and adhesion. The conductive carbon material is typically mixed in a slurry tank during the preparation process. Existing techniques typically involve mixing the conductive carbon material with an appropriate amount of solvent and binder. A stirring mechanism in the slurry tank then stirs the carbon material, solvent, and binder.

[0003] Due to the different conductive carbon materials, the temperature or stirring mechanism strength in the pulping tank is different, and the existing conductive carbon materials will inevitably be unevenly mixed when mixed with the solvent and the binder, resulting in agglomeration. This makes it easy to clog the discharge pipe when discharging the material from the lower part of the pulping tank, causing the discharge pipe to be unsmooth, affecting the discharge. The only way to clear the agglomeration in the discharge pipe is to disassemble the discharge pipe as a whole. Moreover, the existing discharge pipe is a relatively thin hose, which is not convenient for cleaning the agglomeration inside, and the cleaning operation is relatively inconvenient. Utility Model Content

[0004] In order to solve the technical problems existing in the above background technology, the utility model provides a pulping tank discharge filtering device.

[0005] The technical solution of this utility model is as follows:

[0006] A pulping tank discharge filter device is provided at a discharge port at the bottom of the pulping tank, wherein the inner diameter of the discharge port increases from bottom to top, and a first discharge pipe, a valve, and a second discharge pipe are sequentially connected at the lower end of the discharge port, wherein the axes of the first discharge pipe and the second discharge pipe coincide with the axis of the discharge port;

[0007] A filter assembly is provided in the second discharge pipe, comprising an annular guide plate and a filter screen located below the annular guide plate. The annular guide plate is detachably connected to the upper portion of the second discharge pipe, with its axis being coaxial with the axis of the second discharge pipe, and its upper outer wall being connected to the inner wall of the second discharge pipe, with its inner diameter decreasing from top to bottom.

[0008] The filter screen is arranged along the cross-sectional direction of the second discharge pipe and can slide along the axial direction perpendicular to the second discharge pipe.

[0009] The filter is arranged in the second discharge pipe, and can filter the slurry flowing out of the discharge port in the pulping tank in the second discharge pipe. The filter is arranged to be able to move along the radial direction of the second discharge pipe under the drive of external force, which can crush or disperse some agglomerated conductive carbon materials, reduce the phenomenon of more agglomerates blocking the filter holes of the filter, affecting the outflow of the slurry from the filter to the second discharge pipe, and is conducive to the smooth outflow of the slurry; when there are too many agglomerates and the slurry cannot be discharged smoothly, the filter can be quickly cleaned by closing the valve above the filter, removing the second discharge pipe and the filter inside it.

[0010] The filter screen can only move along the radius of the second discharge pipe if its outer diameter is smaller than the inner diameter of the second discharge pipe. Specifically, the outer diameter of the filter screen is between the inner diameter of the second discharge pipe and the minimum inner diameter of the annular guide plate.

[0011] Regarding the specific structure in which the filter screen can move along the axial direction perpendicular to the second discharge pipe, a push-pull member is provided on the upper part of the filter screen along the axial direction perpendicular to the second discharge pipe. One end of the push-pull member extends outward from the second discharge pipe, and is sealed at the connection with the second discharge pipe. The push-pull member can move back and forth along the axial direction perpendicular to the second discharge pipe, which helps to shake and break up some agglomerated materials or larger diameter particles in the filter screen.

[0012] Regarding the connection structure between the above-mentioned push-pull member and the second discharge pipe, to ensure the sealing of the second discharge pipe, the second discharge pipe is provided with a sliding hole adapted to the push-pull member, and one end of the push-pull rod is connected to the sliding hole through a retractable elastic sleeve.

[0013] In order to increase the filtering area of ​​the filter, filter more lumps, and gather more lumps or particles to break them up, the filter is set to be an arc filter.

[0014] The movable range of the outer edge of the above-mentioned filter screen in the second discharge pipe is that the maximum vertical distance between the maximum outer diameter of the filter screen and the inner wall of the second discharge pipe is 1-4 cm.

[0015] In order to facilitate the detection of the amount of lumps or particulate matter in the filter screen, and to be able to perform cleaning operations in time to avoid blockage of the first discharge pipe and the second discharge pipe, a plurality of brackets are provided along the circumference of the inner wall of the second discharge pipe, and an outer edge is provided on the upper part of the filter screen, and the outer edge is set on the bracket. A pressure sensor is provided on the upper surface of the bracket, and the lower surface of the outer edge is in close contact with the detection surface of the pressure sensor. When the pressure signal detected by the pressure sensor increases and lasts for a certain period of time, it means that there is a lot of accumulation of lumps and blockages in the filter screen and it needs to be cleaned.

[0016] In order to facilitate the quick disassembly of the annular guide plate when disassembling the filter screen, an upper baffle is provided at the upper end of the annular guide plate, and the upper baffle is mounted on the upper end surface of the annular guide plate.

[0017] In order to provide a timely warning when a large amount of lumps accumulate in the filter, the valve is set as an electric valve, and the valve and pressure sensor are electrically connected to an external industrial control machine respectively.

[0018] The beneficial effects of the present invention are:

[0019] The inner diameter of the discharge port increases from bottom to top, which can increase the inner diameter of the discharge port. Compared with the thinner hose in the existing technology, it is convenient for the slurry in the pulping tank to flow smoothly to the first discharge pipe. The first discharge pipe is convenient for installing the valve at the discharge port of the pulping tank.

[0020] A valve is provided between the first discharge pipe and the second discharge pipe. The valve may be a butterfly valve, which is used to open and close the first discharge pipe and the second discharge pipe. When the filter screen in the second discharge pipe needs to be cleaned, the valve is closed for operation without removing the first discharge pipe.

[0021] The filter screen can filter the slurry in the second discharge pipe. The filter screen is configured to be movable along the radial direction of the second discharge pipe under the drive of an external force, thereby breaking up some agglomerated conductive carbon materials and reducing the phenomenon that a large number of agglomerates are blocked on the filter holes of the filter screen and affect the outflow of the slurry from the filter screen to the second discharge pipe, thereby facilitating the smooth outflow of the slurry.

[0022] In order to increase the filtering area of ​​the filter, filter more agglomerates, and gather more agglomerates or particles to break them up, the filter is set to an arc filter;

[0023] A pressure sensor is set below the outer edge of the filter. According to the duration and continuous vertical range of the pressure signal of the pressure sensor, it is convenient to detect the amount of lumps or particulate matter in the filter, and cleaning operations can be performed in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the attached figure:

[0025] Figure 1 It is a schematic diagram of the cross-sectional structure of the first part;

[0026] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0027] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0028] Figure 4 for Figure 3 The enlarged structural diagram at C in the middle;

[0029] Figure 5 for Figure 3 The enlarged structural diagram at D in the middle;

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the second part;

[0031] Figure 7 for Figure 6 The enlarged structural diagram at E in the middle;

[0032] The components represented by the reference numerals in the figure are:

[0033] 1. Pulping tank; 11. Discharge port; 2. First discharge pipe; 3. Valve; 4. Second discharge pipe; 41. Sliding hole; 5. Annular guide plate; 51. Upper baffle; 6. Filter screen; 61. Outer edge; 7. Push-pull member; 8. Retractable elastic sleeve; 9. Bracket; 10. Pressure sensor. DETAILED DESCRIPTION

[0034] See also Figure 1 and Figure 6 As shown, a pulping tank discharge filtering device is arranged at the discharge port 11 at the bottom of the pulping tank 1. The inner diameter of the discharge port 11 increases from bottom to top, which can increase the inner diameter of the discharge port 11. Compared with the thinner hose in the existing technology, it is convenient for the pulping tank 1 to flow smoothly to the first discharge pipe 2.

[0035] See also Figure 1 、 Figure 2 and Figure 3 As shown, the lower end of the discharge port 11 is provided with a first discharge pipe 2, a valve 3, and a second discharge pipe 4, which are interconnected in sequence. The axes of the first and second discharge pipes 2 and 4 coincide with the axis of the discharge port 11. A filter assembly is provided within the second discharge pipe 4. The filter assembly comprises an annular guide plate 5 and a filter screen 6 located below it. The mesh size of the filter screen 6 can be selected based on the slurry. The annular guide plate 5 is detachably connected to the upper portion of the second discharge pipe 4. Its axis is coaxial with the axis of the second discharge pipe 4, and its upper outer wall is connected to the inner wall of the second discharge pipe 4. Its inner diameter decreases from top to bottom. The filter screen 6 is arranged along the cross-section of the second discharge pipe 4 and can slide in a direction perpendicular to the axis of the second discharge pipe 4.

[0036] See also Figure 4 As shown, in order to facilitate the quick disassembly of the annular guide plate 5 when disassembling the filter screen 6 , an upper baffle 51 is provided at the upper end of the annular guide plate 5 , and the upper baffle 51 is mounted on the upper end surface of the annular guide plate 5 .

[0037] See also Figure 1 and Figure 6 As shown, in order to increase the filtering area of ​​the filter screen 6, filter more agglomerates, and collect and break up a large number of agglomerates or particles, the filter screen 6 is provided as an arc-shaped filter screen 6. The movable range of the outer edge of the filter screen 6 within the second discharge pipe 4 is such that the maximum vertical distance between the maximum outer diameter of the filter screen 6 and the inner wall of the second discharge pipe 4 is 1-4 cm.

[0038] The above structure can achieve the following effect: the filter screen 6 is arranged in the second discharge pipe 4, and can filter the slurry flowing out of the discharge port 11 in the pulping tank 1 in the second discharge pipe 4. The filter screen 6 is arranged to be able to move along the radial direction of the second discharge pipe 4 under the drive of external force, which can crush or break up some agglomerated conductive carbon materials, reduce the phenomenon of more agglomerates blocking the filter holes of the filter screen 6, and affect the outflow of the slurry from the filter screen 6 to the second discharge pipe 4, which is conducive to the smooth outflow of the slurry; when there are too many agglomerates and the slurry cannot be discharged smoothly, the filter screen 6 can be quickly cleaned by closing the valve 3 above the filter screen 6 and removing the second discharge pipe 4 and the filter screen 6 inside it.

[0039] See also Figure 1 As shown, the outer diameter of the upper end of the filter screen 6 is smaller than the inner diameter of the second discharge pipe 4 so that it can move along the radial direction of the second discharge pipe 4. Specifically, the outer diameter of the filter screen 6 is between the inner diameter of the second discharge pipe 4 and the minimum inner diameter of the annular guide plate 5. Figure 3 As shown, regarding the specific structure of the filter screen 6 being able to move along the axis direction perpendicular to the second discharge pipe 4, a push-pull member 7 is provided on the upper part of the filter screen 6 along the axis direction perpendicular to the second discharge pipe 4. The push-pull member 7 is a push-pull rod. One end of the push-pull member 7 extends outward from the second discharge pipe 4. The push-pull member 7 is sealed with the connection point of the second discharge pipe 4 and can reciprocate along the axis direction perpendicular to the second discharge pipe 4, which helps to shake and break up the partially agglomerated materials or larger diameter particles in the filter screen 6. The push-pull rod is connected to the upper end of the filter screen 6. When the second discharge pipe 4 is disassembled, the filter screen 6 can be quickly and easily lifted upward, which facilitates the cleaning operation of the filter screen 6. The end of the push-pull rod that passes through the sliding hole 41 is the outer end. The outer end can be manually driven to move the push-pull rod, or it can be connected to an external reciprocating motor to realize the reciprocating movement of the push-pull rod along the axis direction perpendicular to the second discharge pipe 4. Compared with manual operation, it can reduce labor intensity.

[0040] See also Figure 5As shown, regarding the connection structure between the above-mentioned push-pull member 7 and the second discharge pipe 4, in order to ensure the sealing of the second discharge pipe 4, the second discharge pipe 4 is provided with a sliding hole 41 adapted to the push-pull member 7, and one end of the push-pull rod is connected to the sliding hole 41 through a retractable elastic sleeve 8. The material of the retractable elastic sleeve 8 is rubber. One end of the retractable elastic sleeve 8 is sealed and connected to the sliding hole 41 close to the inner wall of the pulping tank 1, and the other end is sleeved on the push-pull rod and sealed and connected to the push-pull rod. The retractable elastic sleeve 8 has a certain elasticity, which facilitates the sliding of the push-pull rod; in order to further improve the sealing between the push-pull rod and the sliding hole 41, a retractable elastic sleeve 8 is also provided on the outside of the sliding hole 41, and the two ends of the retractable elastic sleeve 8 are also respectively sealed and connected to the outside of the sliding hole 41 and the push-pull rod, so as to prevent the slurry in the pulping tank 1 from entering the sliding hole 41, causing slurry leakage and affecting the sliding of the push-pull rod.

[0041] See also Figure 5 As shown, in order to facilitate the detection of the amount of agglomerates or particulate matter in the filter 6, timely cleaning operations can be performed to avoid blockage of the first discharge pipe 2 and the second discharge pipe 4, a plurality of brackets 9 are provided along the circumferential direction of the inner wall of the second discharge pipe 4, and the upper end faces of the plurality of brackets 9 are of the same height. An outer edge 61 is provided on the upper part of the filter 6, and the outer edge 61 is mounted on the bracket 9. A pressure sensor 10 is provided on the upper surface of the bracket 9, and the lower surface of the outer edge 61 is in close contact with the detection surface of the pressure sensor 10.

[0042] See also Figure 5 、 Figure 6 and Figure 7 As shown, at least two pressure sensors 10 are provided, distributed on different brackets 9. The upper surface of the bracket 9 has a certain width, so that when the filter screen 6 moves in a direction perpendicular to the axis of the second discharge pipe 4 driven by the push-pull rod, the outer edge 61 of the filter screen 6 will not separate from the bracket 9, and the detection surface of the pressure sensor 10 will not separate from the lower surface of the outer edge 61, so that the filter screen 6 can be detected when it is not moving. If the pressure signal detected by the pressure sensor 10 increases compared to the previous value, the range of variation is large, and it persists for a certain period of time, it indicates that a large amount of agglomerates and blockages have accumulated in the filter screen 6 and need to be cleaned.

[0043] The valve 3 can be an electric butterfly valve, and the electric butterfly valve and the pressure sensor 10 are electrically connected to an external industrial control computer. When the detection value of the pressure sensor 10 reaches a preset threshold value, it indicates that there are too many lumps in the filter 6, which will cause the filter 6 and the second discharge pipe 4 to be blocked. The pressure sensor 10 sends the detection signal to the industrial control computer, which controls the electric butterfly valve to close and alarms, prompting the staff to clean the filter 6 in time. If the outer end of the push-pull rod is driven to move back and forth by a reciprocating motor, then by connecting the reciprocating motor to the industrial control computer, when the pressure sensor 10 sends the detection signal to the industrial control computer, the industrial control computer first controls the reciprocating motor to start, drive the push-pull rod and the filter 6 to move back and forth, and pre-break up some of the lumps in the filter 6. Within a certain period of time or when the filter 6 needs to be removed, the reciprocating motor is controlled to stop.

Claims

1. A pulping tank discharge filter device, arranged at a discharge port (11) at the bottom of a pulping tank (1), characterized in that: The inner diameter of the discharge port (11) increases from bottom to top, and the lower end of the discharge port (11) is provided with a first discharge pipe (2), a valve (3) and a second discharge pipe (4) which are connected in sequence, and the axes of the first discharge pipe (2) and the second discharge pipe (4) are coincident with the axis of the discharge port (11); A filter assembly is provided in the second discharge pipe (4), the filter assembly comprising an annular guide plate (5) and a filter screen (6) located below the annular guide plate (5), the annular guide plate (5) being detachably connected to the upper portion of the second discharge pipe (4), the axis of the annular guide plate (5) being coaxial with the axis of the second discharge pipe (4), and the outer wall of the upper portion of the annular guide plate being connected to the inner wall of the second discharge pipe (4), and the inner diameter of the annular guide plate (5) decreasing from top to bottom; The filter screen (6) is arranged along the cross-sectional direction of the second discharge pipe (4) and is capable of sliding along an axial direction perpendicular to the second discharge pipe (4).

2. A pulping tank discharge filtering device according to claim 1, characterized in that: The outer diameter of the filter screen (6) is between the inner diameter of the second discharge pipe (4) and the minimum inner diameter of the annular guide plate (5).

3. A pulping tank discharge filtering device according to claim 1, characterized in that: A push-pull member (7) is provided on the upper portion of the filter screen (6) along the axial direction perpendicular to the second discharge pipe (4). One end of the push-pull member (7) extends outward from the second discharge pipe (4). The push-pull member (7) is sealed at the connection with the second discharge pipe (4) and can move back and forth along the axial direction perpendicular to the second discharge pipe (4).

4. A pulping tank discharge filtering device according to claim 3, characterized in that: The second discharge pipe (4) is provided with a sliding hole (41) adapted to the push-pull member (7), and one end of the push-pull member is connected to the sliding hole (41) via a retractable elastic sleeve (8).

5. A pulping tank discharge filtering device according to claim 1, 2 or 3, characterized in that: The filter screen (6) is an arc-shaped filter screen (6).

6. A pulping tank discharge filtering device according to claim 2, characterized in that: The maximum vertical distance between the maximum outer diameter of the filter screen (6) and the inner wall of the second discharge pipe (4) is 1-4 cm.

7. The pulping tank discharge filtering device according to claim 1, characterized in that: The inner wall of the second discharge pipe (4) is provided with a plurality of brackets (9) along the circumferential direction, the upper portion of the filter screen (6) is provided with an outer edge (61), the outer edge (61) is arranged on the bracket (9), the upper surface of the bracket (9) is provided with a pressure sensor (10), and the lower surface of the outer edge (61) is in close contact with the detection surface of the pressure sensor (10).

8. The pulping tank discharge filtering device according to claim 1, characterized in that: The upper end of the annular guide plate (5) is provided with an upper baffle (51), and the upper baffle (51) is mounted on the upper end surface of the annular guide plate (5).

9. The pulping tank discharge filtering device according to claim 7, characterized in that: The valve (3) is an electric valve (3), and the valve (3) and the pressure sensor (10) are electrically connected to an external industrial control machine respectively.

Images