Pulp screening machine for vulcanized fiber base paper production

Abstract

The utility model belongs to the technical field of pulp screening machines, and particularly relates to a pulp screening machine for vulcanized fiber base paper production, which comprises a lower shell, a coarse filter screen is arranged in an upper shell, the bottom end of a fixing frame is connected with a pulp mixing assembly, and the pulp mixing assembly is composed of a main shaft, an outer shell, a connector, a scraper blade, a first bevel gear, a second bevel gear and a helical ribbon stirrer. The center of the fixing frame is rotationally connected with one end of a main shaft in a penetrating mode, two sets of outer shells are arranged on the upper portion and the lower portion of the outer side of the main shaft, the inner structures of the outer shells are the same, the outer shells are connected with a spiral ribbon stirrer and a scraper, a connector is connected with an inserting groove, and the inserting groove is formed in the top end of a driving shaft. The problems that a pulp layer is formed on a sieve plate or a filter bag, the thickness of the pulp layer is increased along with the increase of the total amount of filtered pulp, the pulp layer is thickened, the speed of the paper pulp sieve plate is slower, the fluidity of paper pulp in the filter device is poorer, the smoothness of the sieve plate is reduced, and the screening efficiency is reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulp screening machines, and particularly relates to a pulp screening machine for the production of parchment base paper. Background Art

[0002] During the production of parchment paper, workers need to use a pulp screening machine to filter and screen the pulp of the parchment base paper, so as to perform pulp screening treatment on the pulp.

[0003] The structure of the traditional pulp screening machine is single. When the parchment base paper changes from coarse filtration to fine filtration, workers still need to move the parchment base paper after coarse filtration from the coarse filtration pulp screening machine to the fine filtration pulp screening machine, so as to perform fine filtration pulp screening treatment on the parchment base paper. This method is time-consuming and laborious, which not only increases the working intensity of workers, but also reduces the production efficiency of the factory. In addition, during the screening process of the pulp, a pulp layer will be formed on the sieve plate or filter bag. The thickness of the pulp layer increases with the increase of the total amount of filtered slurry. The thicker the pulp layer, the slower the pulp passes through the sieve plate. The slower the pulp passes through the sieve plate, the poorer the fluidity of the pulp inside the filtering device, and the poorer the uniformity of the fiber and impurity content in each area. Eventually, the smoothness of the sieve plate decreases and the screening efficiency drops. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a pulp screening machine for the production of parchment base paper, which solves the problem that during the screening process of the pulp, a pulp layer will be formed on the sieve plate or filter bag. The thickness of the pulp layer increases with the increase of the total amount of filtered slurry. As the pulp layer thickens, the speed of the pulp passing through the sieve plate becomes slower, the fluidity of the pulp inside the filtering device becomes poorer, resulting in a decrease in the smoothness of the sieve plate and a drop in the screening efficiency.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: A pulp screening machine for the production of parchment base paper, including a lower housing, an upper housing is arranged at the top end of the lower housing, a coarse filter screen is arranged inside the upper housing, a cross-shaped fixing frame is arranged at the inner wall of the top end of the upper housing, a pulp mixing and homogenizing component is connected to the bottom end of the fixing frame. The pulp mixing and homogenizing component consists of a main shaft, an outer housing, a connecting head, a scraper, a first helical gear, a second helical gear, and a spiral ribbon agitator. One end of the main shaft is rotatably connected through the center of the fixing frame. Two groups of outer housings are arranged up and down on the outer side of the main shaft, and the upper outer housing is above the coarse filter screen. The structures inside the outer housings are the same, and the outer housings are connected to the spiral ribbon agitator and the scraper. A connecting head is arranged at the bottom end of the main shaft, and the connecting head is connected to a plug-in slot. The plug-in slot is opened at the top end of the drive shaft. The drive shaft passes through the center of the lower housing and is rotatably connected thereto, and the drive shaft is connected to a transmission mechanism. The transmission mechanism is connected to a reduction motor, and the reduction motor is arranged at an eccentric position below the lower housing.

[0006] The beneficial effects of the utility model are:

[0007] During the negative pressure suction filtration process, while the pulp mixing component rotates around the axes of the upper shell and the lower shell, it scrapes up the pulp layer deposited on the coarse filter screen and the filter bag through a scraper, and drives the spiral ribbon agitator to mix the pulp, effectively improving the filtration speed of the pulp; the assembly of the coarse filter screen and the fine filtration component is convenient, and two-stage filtration of the pulp can be quickly achieved.

[0008] In order to complete the connection between the upper shell and the lower shell:

[0009] As a further improvement of the above technical solution: a top plate is installed at the top end of the lower shell, and a number of first screws are installed around the top end of the top plate. The first screws penetrate through the bottom plate, and the bottom plate is installed at the bottom end of the upper shell. A nut is threadedly connected to the outside of the first screw. Handles are provided at opposite sides of the upper shell.

[0010] The beneficial effect of this improvement is that the position of the upper shell is initially positioned by the first screw penetrating through the bottom end of the upper shell, and the lower shell and the upper shell can be connected by the nut. The handle is provided to facilitate the user to disassemble the lower shell and the upper shell and then lift the upper shell upward to separate it from above the lower shell.

[0011] In order to position the filter bag:

[0012] As a further improvement of the above technical solution: a fine filtration component is installed inside the lower shell. The fine filtration component is composed of a filter tank, a filter bag, a second screw, a first pressing plate, a second pressing plate, and a third screw. A filter tank is installed inside the lower shell. A filter bag is sleeved inside the filter tank. One end of the filter bag is sleeved at the top end of the filter tank. A number of third screws are installed around the top end of the filter tank, and one end of the filter bag is limited by the filter bag. The third screw penetrates through the second pressing plate, and a nut is threadedly installed at the top end of the third screw. The nut presses and limits the second pressing plate at the top end of the filter tank. A limiting rod penetrates through the center of the filter tank, and a number of second screws are installed around the bottom end of the filter tank with the limiting rod as the axis. The second screw penetrates through the first pressing plate and is slidably connected to it, and a nut is threadedly connected above the second screw.

[0013] The beneficial effect of this improvement is that before using the device, first place the filter bag inside the filter tank, and install and limit one end of the filter bag on the third screw provided at the top end of the filter tank. The second pressing plate is limited above the filter tank by the nut to clamp the top end of the filter bag. Then, the first pressing plate is limited by the second screw and installed above the filter tank by the nut to position the filter bag.

[0014] In order to connect the connector with the socket:

[0015] As a further improvement of the above technical solution: a movable hole is penetrated through the center of the limiting rod.

[0016] The beneficial effect of this improvement is that by setting the movable rod, the bottom end of the main shaft can be inserted, enabling the connection head to be connected to the insertion slot.

[0017] In order to disperse and scrape the stacked pulp layer:

[0018] As a further improvement of the above technical solution: a first helical gear is rotatably installed at the inner top of the outer shell body. A second helical gear is meshed and connected to one side of the first helical gear. One end of the second helical gear is connected to a spiral ribbon agitator. The main shaft passes through the center of the first helical gear and is connected thereto. One side of the outer shell body is connected to a scraper, and the scraper is inclined, with its bottom fitting against the top of the filter bag and the coarse filter screen.

[0019] The beneficial effect of this improvement is that when the reduction motor is started, the transmission mechanism drives the drive shaft to rotate. The rotating drive shaft causes the insertion slot to drive the main shaft to rotate. The rotating main shaft drives the rotation of the first helical gear and the outer shell body. The rotating first helical gear causes the second helical gear meshed with it to drive the rotation of the spiral ribbon agitator. At this time, the spiral ribbon agitator will evenly mix the pulp, and the stirring can break the pulp layer formed on the filter tank and the coarse filter screen, avoiding blockage and ensuring smooth filtration. The inclined scraper reduces the resistance during scraping.

[0020] In order to ensure the sealing performance at the connection between the lower shell and the upper shell:

[0021] As a further improvement of the above technical solution: a sealing ring is provided at the top end of the top plate.

[0022] The beneficial effect of this improvement is that setting the sealing ring can better ensure the sealing performance at the connection between the lower shell and the upper shell.

[0023] In order to improve the screening efficiency of materials quickly:

[0024] As a further improvement of the above technical solution: an eccentric negative pressure feeding port is provided at the bottom end of the lower shell body, and the negative pressure feeding port is connected to negative pressure feeding.

[0025] The beneficial effect of this improvement is that by connecting the negative pressure feeding port to a negative pressure storage tank before using this device, the screening efficiency of materials can be improved.

[0026] Parts not involved in this device are the same as or can be implemented using existing technologies. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of the present utility model;

[0028] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model;

[0029] Figure 3It is a schematic cross-sectional structure diagram of the present utility model;

[0030] Figure 4 It is a schematic cross-sectional structure diagram of the present utility model;

[0031] Figure 5 It is a schematic partial structure diagram A of the present utility model;

[0032] In the figure: 1. Lower housing; 101. Top plate; 102. Bottom plate; 2. Upper housing; 3. Reducing motor; 4. Driving shaft; 41. Insertion slot; 5. Negative pressure material suction port; 6. Fine filtering component; 61. Filter tank; 62. Filter bag; 63. Screw two; 64. Press plate one; 65. Press plate two; 66. Screw three; 7. Fixed frame; 8. Pulp mixing component; 81. Main shaft; 82. Outer housing; 83. Connector; 84. Scraper; 85. Helical gear one; 86. Helical gear two; 87. Screw ribbon stirrer; 9. Coarse filter screen; 10. Handle. Specific embodiments

[0033] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.

[0034] As Figures 1-5 shown, a pulp screening machine for steel paper base paper production includes a lower housing 1. An upper housing 2 is installed at the top end of the lower housing 1. A coarse filter screen 9 is installed inside the upper housing 2. A cross-shaped fixed frame 7 is arranged at the inner wall of the top end of the upper housing 2. The bottom end of the fixed frame 7 is connected to a pulp mixing component 8. The pulp mixing component 8 is composed of a main shaft 81, an outer housing 82, a connector 83, a scraper 84, a helical gear one 85, a helical gear two 86, and a screw ribbon stirrer 87. One end of the main shaft 81 is rotatably connected through the center of the fixed frame 7. Two groups of outer housings 82 are arranged above and below the outer side of the main shaft 81, and the outer housing 82 arranged above is above the coarse filter screen 9. The internal structures of the outer housings 82 are the same, and the outer housing 82 is connected to the screw ribbon stirrer 87 and the scraper 84. A connector 83 is arranged at the bottom end of the main shaft 81, and the connector 83 is connected to an insertion slot 41. The insertion slot 41 is opened at the top end of the driving shaft 4. The driving shaft 4 passes through the center of the lower housing 1 and is rotatably connected thereto, and the driving shaft 4 is connected to a transmission mechanism. The transmission mechanism is connected to a reducing motor 3, and the reducing motor 3 is installed at an eccentric position below the lower housing 1.

[0035] The top end of the lower housing 1 is provided with a top plate 101, and a number of first screws are arranged around the top end of the top plate 101. The first screws penetrate through the bottom plate 102, and the bottom plate 102 is arranged at the bottom end of the upper housing 2. Nuts are threadedly connected to the outer sides of the first screws. At the opposite positions on both sides of the upper housing 2, handles 10 are provided. The position of the upper housing 2 is preliminarily positioned by the first screws penetrating through the bottom end of the upper housing 2, and the lower housing 1 and the upper housing 2 can be connected by the nuts. The handles 10 are provided to facilitate the user to disassemble the lower housing 1 and the upper housing 2 and then lift the upper housing 2 upward to separate it from above the lower housing 1.

[0036] A fine filtration assembly 6 is arranged inside the lower housing 1. The fine filtration assembly 6 is composed of a filter tank 61, a filter bag 62, a second screw 63, a first pressing plate 64, a second pressing plate 65, and a third screw 66. The filter tank 61 is arranged inside the lower housing 1. The filter bag 62 is sleeved inside the filter tank 61. One end of the filter bag 62 is sleeved at the top end of the filter tank 61. A number of third screws 66 are arranged around the top end of the filter tank 61, and one end of the filter bag 62 is limited by the filter bag 62. The third screws 66 penetrate through the second pressing plate 65, and nuts are threadedly arranged at the top ends of the third screws 66, and the nuts press and limit the second pressing plate 65 at the top end of the filter tank 61. A limiting rod penetrates through the center of the filter tank 61. A number of second screws 63 are arranged around the limiting rod at the bottom end of the filter tank 61. The second screws 63 penetrate through the first pressing plate 64 and are slidably connected to it, and nuts are threadedly connected above the second screws 63; Before using the device, first place the filter bag 62 inside the filter tank 61, and make one end of it sleeved at the third screws 66 arranged at the top end of the filter tank 61 to install and limit the filter bag 62. The second pressing plate 65 is limited above the filter tank 61 by the nuts to clamp the top end of the filter bag 62. Then, the first pressing plate 64 is limited by the second screws 63 and installed above the filter tank 61 by the nuts to position the filter bag 62.

[0037] A movable hole is penetrated through the center of the limiting rod; The arrangement of the movable rod enables the bottom end of the main shaft 81 to be inserted, so that the connecting head 83 is connected to the socket 41.

[0038] At the inner top of the outer housing 82, a first helical gear 85 is rotatably installed. On one side of the first helical gear 85, a second helical gear 86 is meshed and connected. One end of the second helical gear 86 is connected to a spiral ribbon agitator 87. The main shaft 81 passes through the center of the first helical gear 85 and is connected thereto. One side of the outer housing 82 is connected to a scraper 84, and the scraper 84 is inclined and its bottom fits against the top of the filter bag 62 and the coarse filter screen 9. By starting the reduction motor 3, the transmission mechanism drives the drive shaft 4 to rotate. The rotating drive shaft 4 causes the insertion slot 41 to drive the main shaft 81 to rotate. The rotating main shaft 81 drives the rotation of the first helical gear 85 and the outer housing 82. The rotating first helical gear 85 causes the second helical gear 86 meshed with it to drive the rotation of the spiral ribbon agitator 87. At this time, the spiral ribbon agitator 87 will mix the pulp evenly. The agitation can break the pulp layer formed on the filter tank 61 and the coarse filter screen 9 to avoid blockage and ensure smooth filtration. The inclined scraper 84 reduces the resistance during scraping.

[0039] A sealing ring is provided at the top end of the top plate 101. The setting of the sealing ring can better ensure the sealing performance at the connection between the lower housing 1 and the upper housing 2.

[0040] An eccentric negative pressure feeding port 5 is opened at the bottom end of the lower housing 1, and the negative pressure feeding port 5 is connected to a negative pressure feeding tank. Before using this device, connecting the negative pressure feeding port 5 to a negative pressure storage tank can improve the screening efficiency of materials.

[0041] The working principle and usage process of the present utility model: Before using the device, first place the filter bag 62 inside the filter tank 61, and make one end of it sleeved on the screw rod three 66 provided at the top end of the filter tank 61 to install and limit the filter bag 62. The pressure plate two 65 is limited above the filter tank 61 through a nut to clamp the top end of the filter bag 62. Then, the pressure plate one 64 is limited through the screw rod two 63 and installed above the filter tank 61 through a nut to position the filter bag 62. Then, the screw rod one passes through the bottom end of the upper housing 2 to initially position the upper housing 2, and the lower housing 1 and the upper housing 2 can be connected through a nut. The setting of the sealing ring can better ensure the sealing performance at the connection between the lower housing 1 and the upper housing 2. Before using this device, connecting the negative pressure feeding port 5 to a negative pressure storage tank can improve the screening efficiency of materials. By starting the reduction motor 3, the transmission mechanism drives the drive shaft 4 to rotate. The rotating drive shaft 4 causes the insertion slot 41 to drive the main shaft 81 to rotate. The rotating main shaft 81 drives the rotation of the first helical gear 85 and the outer housing 82. The rotating first helical gear 85 causes the second helical gear 86 meshed with it to drive the rotation of the spiral ribbon agitator 87. At this time, the spiral ribbon agitator 87 will mix the pulp evenly. The agitation can break the pulp layer formed on the filter tank 61 and the coarse filter screen 9 to avoid blockage and ensure smooth filtration. The inclined scraper 84 reduces the resistance during scraping.

Claims

1. A pulp screen for producing steel paper, characterized by: The invention comprises a lower shell (1), an upper shell (2) is arranged at the top of the lower shell (1), a coarse filter (9) is arranged inside the upper shell (2), a cross-shaped fixing frame (7) is arranged at the inner wall of the top of the upper shell (2), the bottom end of the fixing frame (7) is connected to a pulp mixing component (8), the pulp mixing component (8) is composed of a main shaft (81), an outer shell (82), a connecting head (83), a scraper (84), a bevel gear 1 (85), a bevel gear 2 (86), and a ribbon agitator (87), one end of the main shaft (81) is rotatably connected to the center of the fixing frame (7), and two upper and lower outer sides of the main shaft (81) are arranged. An outer shell (82) is formed, and the outer shell (82) arranged above is above the coarse filter (9). The inner structure of the outer shell (82) is the same, and the outer shell (82) is connected to the ribbon agitator (87) and the scraper (84). A connector (83) is arranged at the bottom end of the main shaft (81), and the connector (83) is connected to the plug slot (41). The plug slot (41) is opened at the top end of the drive shaft (4). The drive shaft (4) passes through the center of the lower shell (1) and is rotatably connected thereto. The drive shaft (4) is connected to a transmission mechanism, and the transmission mechanism is connected to a reduction motor (3). The reduction motor (3) is arranged at an eccentric position below the lower shell (1).

2. The pulp screen for producing steel paper base paper according to claim 1, characterized in that: A top plate (101) is arranged at the top of the lower shell (1), and a plurality of screw rods (1) are arranged around the top of the top plate (101), and the screw rods (1) penetrate the bottom plate (102), and the bottom plate (102) is arranged at the bottom end of the upper shell (2), and the outer side of the screw rods (1) is threadedly connected to a nut, and handles (10) are arranged at opposite sides of the upper shell (2).

3. The pulp screen for producing steel paper base paper according to claim 1, characterized in that: A fine filter assembly (6) is arranged inside the lower shell (1), and the fine filter assembly (6) is composed of a filter tank (61), a filter bag (62), a second screw (63), a first pressing plate (64), a second pressing plate (65), and a third screw (66). A filter tank (61) is arranged inside the lower shell (1), and a filter bag (62) is sleeved in the filter tank (61). One end of the filter bag (62) is sleeved on the top of the filter tank (61), and a plurality of third screws (66) are arranged around the top of the filter tank (61). The filter bag (61) is sleeved in the filter tank (61). One end of the filter trough (61) is limited by the filter bag (62), the screw rod three (66) passes through the pressure plate two (65), the top end of the screw rod three (66) is threaded with a nut, and the nut presses the pressure plate two (65) to limit the top end of the filter trough (61), a limiting rod is passed through the center of the filter trough (61), and a plurality of screw rods two (63) are arranged around the bottom end of the filter trough (61) with the limiting rod as the axis, the screw rod two (63) passes through the pressure plate one (64) and is slidably connected thereto, and the upper part of the screw rod two (63) is threadedly connected to the nut.

4. The pulp screen for producing steel paper base paper according to claim 3, characterized in that: A movable hole is formed through the center of the limiting rod.

5. The pulp screen for producing steel paper base paper according to claim 1, characterized in that: A bevel gear 1 (85) is rotatably mounted at the inner top of the outer shell (82); one side of the bevel gear 1 (85) is meshedly connected to a bevel gear 2 (86); one end of the bevel gear 2 (86) is connected to a ribbon agitator (87); the main shaft (81) passes through the center of the bevel gear 1 (85) and is connected thereto; one side of the outer shell (82) is connected to a scraper (84); and the scraper (84) is inclined, with its bottom abutting against the top of the filter bag (62) and the coarse filter (9).

6. The pulp screen for producing steel paper base paper according to claim 2, characterized in that: A sealing ring is provided at the top end of the top plate (101).

7. The pulp screen for producing steel paper according to claim 1, characterized in that: A negative pressure material extraction port (5) is provided at an eccentric position at the bottom end of the lower shell (1), and the negative pressure material extraction port (5) is connected to a negative pressure material extraction tank.

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