Shaped paper fluffer

Abstract

The utility model relates to the technical field of papermaking industry, in particular to a forming paper fluffer which comprises a rotary driving mechanism, a crankshaft, a sealing assembly and a machine shell and further comprises a sealing culvert, a shaft penetrating cavity, a water inlet and a water outlet are formed in the sealing culvert, and the crankshaft penetrates through the shaft penetrating cavity and is rotationally connected with the shaft penetrating cavity; the sealing assembly is located between the shaft penetrating cavity and the crankshaft and connected with the shaft penetrating cavity and the crankshaft. A liquid cavity is defined by at least part of the inner wall of the shaft penetrating cavity and the crankshaft, and the water inlet and the water outlet are communicated with the liquid cavity. The sealing assembly is at least partially located in the liquid cavity. The packing sealing structure overcomes the defect that in the prior art, packing sealing is prone to heating, sintering and hardening, and paper pulp leakage is prone to being caused, the liquid cavity is arranged, the part, in the liquid cavity, of the sealing structure can be cooled and lubricated, heating sintering and friction abrasion of the sealing assembly can be reduced, and therefore the risk of paper pulp leakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and more specifically, to a paper unwinding machine. Background Technology

[0002] Paper debonding machines are used in the papermaking industry to debond and pulp fibers, improving the physical properties of paper. One prior art paper debonding machine includes a casing, feed pipe, hopper, discharge pipe, first fixed plate, first motor, stirring shaft, and multiple sets of stirring blades; it also includes a fixed box, second fixed plate, second motor, rotating shaft, first bevel gear, second bevel gear, connecting shaft, multiple sets of push plates, ball bearings, left stop block, right stop block, and fixed shaft.

[0003] In existing technologies, the seal between the desoldering machine shaft and the machine casing is mostly a packing seal. However, since the desoldering machine can only efficiently desolder the fibers at high speeds, the packing seal is prone to overheating, sintering, and hardening at high speeds, leading to pulp leakage. Utility Model Content

[0004] In view of the problem that packing seals in the prior art are prone to overheating, sintering and hardening, which can easily lead to pulp leakage, this utility model provides a forming paper delamination machine, which can reduce the risk of pulp leakage.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A forming paper unwinding machine includes a rotary drive mechanism, a shaft, a sealing assembly, and a housing. The shaft is connected to the power output end of the rotary drive mechanism, and the shaft is rotatably connected to the housing via the sealing assembly. A stirring chamber is formed between the shaft and the housing. The machine also includes a sealing duct with a through-shaft cavity, an inlet, and an outlet. The shaft passes through and is rotatably connected to the through-shaft cavity. The sealing assembly is located between the through-shaft cavity and the shaft and is connected to both. At least a portion of the inner wall of the through-shaft cavity forms a liquid cavity with the shaft. The inlet and outlet are respectively connected to the liquid cavity. At least a portion of the sealing assembly is located within the liquid cavity.

[0007] In the above technical solution, water can enter the liquid chamber through the inlet and then flow out through the outlet. By continuously inputting and outputting water into the liquid chamber, the liquid chamber is kept full of water for a long time, thereby lubricating and cooling the part of the sealing component located in the liquid chamber. This reduces the heat generation, sintering, and frictional wear of the sealing component, thereby reducing the risk of slurry leakage between the casing and the shaft.

[0008] Preferably, the sealing assembly includes a fixed ring, a rotating ring, and an elastic element. A first abutment portion and a second abutment portion are respectively provided on the machine shaft and inside the through-shaft cavity. Both the rotating ring and the fixed ring are sleeved outside the machine shaft and are respectively fixedly connected to and rotatably connected to the machine shaft. Both ends of the elastic element abut against the first abutment portion and one side of the rotating ring, respectively. The other side of the rotating ring abuts against one side of the fixed ring. The other side of the fixed ring abuts against the second abutment portion. The contact surfaces of the rotating ring and the fixed ring, and the elastic element, are all located within the liquid cavity. The machine housing is connected to the machine shaft through the sealing cavity. When the machine shaft rotates, the rotating ring rotates with the machine shaft, while the fixed ring remains stationary. It can be understood that this sealing assembly uses a mechanical seal. Throughout the process, the rotating ring is tightly abutted against the fixed ring under the elastic force of the elastic element. The rotating ring and the fixed ring rub against each other, and a fluid film is formed between them. This fluid film serves to lubricate and cool, while also reducing wear. The elastic element is used to compensate for minute changes in the sealing surface between the rotating ring and the stationary ring, ensuring a good seal.

[0009] Preferably, it further includes a first sealing ring; a limiting groove is provided on the outer side of the fixed ring, the first sealing ring is sleeved on the limiting groove and abuts against the inner wall of the limiting groove, and the outer side of the first sealing ring abuts against the inner wall of the through-shaft cavity. The first sealing ring can prevent pulp in the stirring chamber from seeping into the liquid chamber and water in the liquid chamber from seeping into the stirring chamber, thereby preventing the pulp from being diluted and the water from being contaminated by the pulp, so that the water flowing through the liquid chamber can also be recycled.

[0010] Preferably, the system further includes several second sealing rings. Each second sealing ring is fitted over the outside of the shaft and abuts against the shaft. The outer side of each second sealing ring abuts against the inner wall of the shaft-penetrating cavity. Adjacent second sealing rings abut against each other. A third abutting portion is provided on the inner wall of the shaft-penetrating cavity, and one end of the last second sealing ring abuts against this third abutting portion. The second sealing rings ensure that water does not leak out.

[0011] Preferably, each of the second sealing rings includes a skeleton connected to the skeleton, the skeleton abutting against the inner wall of the through-shaft cavity, and the elastic sealing lip abutting against the machine shaft. The second sealing ring structure is a skeleton oil seal structure, which can provide higher contact pressure and tighter fit, and its sealing performance is better than that of O-rings and other sealing rings.

[0012] Preferably, the sealing cavity includes a main body and a pressure cap, both sleeved outside the machine shaft and rotatably connected to the machine shaft. The pressure cap is detachably connected to one side of the main body, and the pressure cap, the main body, and the machine shaft form the liquid cavity. The sealing cavity consists of a detachable main body and a pressure cap, facilitating the replacement or maintenance of the sealing assembly when necessary.

[0013] Preferably, a connecting ring is provided on the outer side of the sealing duct, and the connecting ring is fitted and connected to the inner wall of one end of the machine casing. This connection method provides better sealing and reduces the risk of pulp leakage.

[0014] Preferably, the assembly also includes multiple first screws and multiple second screws. The connecting ring is connected to the housing via the multiple first screws, and the gland is connected to the main body via the multiple second screws. The screws can be adjusted to tighten the connection as needed, ensuring reliability and sealing. Furthermore, the screw connection method facilitates disassembly and installation, allowing workers to easily open the gland or remove the main body for inspection and maintenance of equipment components.

[0015] Preferably, both the inlet and the outlet are located outside the stirring chamber, with the inlet at the bottom and the outlet at the top of the sealing chamber, respectively. The outlet at the top ensures that the liquid chamber is always filled with water, and even in the event of a short-term water shortage, the sealing assembly can still be effectively cooled and lubricated, thereby further improving the reliability of the seal.

[0016] Preferably, the elastic element is a spring structure, which is sleeved on the outside of the machine shaft. Compared with elastic material components, the spring structure is easier to install, and it has good fatigue resistance and elasticity, which can ensure the reliability and long-term stability of the seal.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting up a liquid chamber, the part of the sealing structure located inside the liquid chamber can be cooled and lubricated, which can reduce the heat generation, sintering and friction wear of the sealing components, thereby reducing the risk of pulp leakage.

[0019] 2. The inlet and outlet are located at the bottom and top of the sealing chamber, respectively, so that water flows from bottom to top. This ensures that the liquid chamber is always full of water, which allows the sealing components to be effectively cooled and lubricated, thereby further improving the reliability of the seal.

[0020] 3. By setting a first sealing ring on the basis of the mechanical seal, the water in the liquid chamber can be prevented from contaminating the pulp in the mixing chamber, and the water in the liquid chamber can also be recycled; at the same time, a skeleton oil seal is set between the machine shaft and the sealing chamber to prevent water in the liquid chamber from leaking out. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the connection between the shaft and the casing of a forming paper defrosting machine;

[0022] Figure 2 This is a structural schematic diagram of a sealed culvert;

[0023] Figure 3 This is a schematic diagram of the skeleton oil seal.

[0024] In the attached diagram: 1-shaft; 101-shaft body; 102-shaft sleeve; 2-machine housing; 201-stirring chamber; 3-sealing cavity; 301-through shaft cavity; 302-water inlet; 303-water outlet; 304-liquid chamber; 305-second abutment part; 306-third abutment part; 307-main body; 308-pressure cover; 309-connecting ring; 4-fixed ring; 401-limiting groove; 5-moving ring; 6-elastic element; 7-first abutment part; 8-first sealing ring; 9-second sealing ring; 901-skeleton; 902-elastic sealing lip; 10-second screw. Detailed Implementation

[0025] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0028] Example 1

[0029] This embodiment is a first embodiment of a forming paper defrosting machine, combined with Figure 1 and Figure 2As shown, it includes a rotary drive mechanism (not shown in the figure), a shaft 1, a sealing assembly, and a housing 2. The shaft 1 includes a shaft body 101 and a bushing 102 sleeved outside the shaft body 101. After the bushing 102 experiences significant wear, the connection between the shaft 1 and the housing 2 can be sealed by replacing the bushing 102, without needing to replace the entire shaft 1. The left side of the shaft 1 is connected to a disc tooth (not shown in the figure) for dispersing pulp, and the right side of the shaft 1 is connected to the power output end of the rotary drive mechanism. The shaft 1 is rotatably connected to the housing 2 through the sealing assembly, and a stirring chamber 201 is formed between the shaft 1 and the housing 2.

[0030] Furthermore, the sludge removal machine also includes a sealing duct 3, which is provided with a shaft cavity 301, an inlet 302, and an outlet 303. The machine shaft 1 passes through the shaft cavity 301 and is rotatably connected to the shaft cavity 301. The sealing assembly is located between the shaft cavity 301 and the machine shaft 1 and is connected to both of them. A portion of the inner wall of the shaft cavity 301 forms a liquid cavity 304 with the machine shaft 1. The inlet 302 and the outlet 303 are respectively connected to the liquid cavity 304. A portion of the sealing assembly is located inside the liquid cavity 304.

[0031] Furthermore, both the inlet 302 and the outlet 303 are located outside the mixing chamber 201, with the inlet 302 at the bottom and the outlet 303 at the top of the sealing chamber 3, respectively. The outlet 303 being at the top ensures that the liquid chamber 304 is always filled with water, and in the event of a short-term water shortage, the sealing assembly can be effectively cooled and lubricated, thereby further improving the reliability of the seal.

[0032] The working principle or workflow of this embodiment is as follows: Water can enter the liquid chamber 304 through the inlet 302 and then flow out of the liquid chamber 304 through the outlet 303. By continuously inputting and outputting water into and out of the liquid chamber 304, the liquid chamber 304 is kept full of water for a long time, thereby lubricating and cooling the part of the sealing component located in the liquid chamber 304. This can reduce the heat generation, sintering, and frictional wear of the sealing component, thereby reducing the risk of slurry leakage between the housing 2 and the shaft 1.

[0033] The beneficial effects of this embodiment are: by setting up a liquid cavity, the part of the sealing structure located in the liquid cavity can be cooled and lubricated, which can reduce the heating, sintering and frictional wear of the sealing components, thereby reducing the risk of pulp leakage.

[0034] Example 2

[0035] This embodiment is a second embodiment of a forming paper unwinding machine. This embodiment is similar to Embodiment 1, except that it combines... Figures 1 to 3As shown, the sealing assembly includes a fixed ring 4, a rotating ring 5, and an elastic element 6. A first abutment portion 7 and a second abutment portion 305 are respectively provided on the machine shaft 1 and inside the shaft cavity 301. Both the rotating ring 5 and the fixed ring 4 are sleeved on the outside of the machine shaft 1, and are respectively fixedly connected to and rotatably connected to the machine shaft 1. Both ends of the elastic element 6 abut against the first abutment portion 7 and one side of the rotating ring 5, respectively. The other side of the rotating ring 5 abuts against one side of the fixed ring 4. The other side of the fixed ring 4 abuts against the second abutment portion 305. The contact surfaces of the rotating ring 5 and the fixed ring 4, and the elastic element 6, are all located within the liquid cavity 304. The machine housing 2 is connected to the machine shaft 1 through a sealing duct 3. It can be understood that this sealing assembly uses a mechanical seal. When the machine shaft 1 rotates, the rotating ring 5 rotates with the machine shaft 1, while the fixed ring 4 remains stationary. Throughout the process, the rotating ring 5 is in close contact with the fixed ring 4 under the elastic force of the elastic element 6. The rotating ring 5 and the fixed ring 4 rub against each other, and a fluid film is formed between them. This fluid film serves to lubricate and cool, while reducing wear. The elastic element 6 is used to compensate for minor changes in the sealing surface between the rotating ring 5 and the fixed ring 4, ensuring a good sealing effect.

[0036] Specifically, the elastic element 6 adopts a spring structure and is sleeved on the outside of the machine shaft 1. Compared with elastic material parts, the spring structure is easier to install, and it has good fatigue resistance and elasticity, which can ensure the reliability and long-term stability of the seal.

[0037] Furthermore, it also includes a first sealing ring 8; a limiting groove 401 is provided on the outer side of the fixed ring 4, the first sealing ring 8 is sleeved on the limiting groove 401 and abuts against the inner wall of the limiting groove 401, and the outer side of the first sealing ring 8 abuts against the inner wall of the through shaft cavity 301. Specifically, the first sealing ring 8 is an O-ring seal. The first sealing ring 8 can prevent the pulp in the mixing chamber 201 from seeping into the liquid chamber 304 and the water in the liquid chamber 304 from seeping into the mixing chamber 201, thereby preventing the pulp from being diluted and the water from being contaminated by the pulp. In this way, the water flowing through the liquid chamber 304 can also be recycled.

[0038] Furthermore, it also includes two second sealing rings 9. Each second sealing ring 9 is fitted onto the outside of the shaft 1 and abuts against the shaft 1. The outer side of each second sealing ring 9 abuts against the inner wall of the shaft-penetrating cavity 301. Adjacent second sealing rings 9 abut against each other. A third abutting portion 306 is provided on the inner wall of the shaft-penetrating cavity 301, and one end of the second sealing ring 9 at the end abuts against the third abutting portion 306. The second sealing rings 9 ensure that water does not leak out.

[0039] Specifically, both second sealing rings 9 include a skeleton 901 connected to an elastic sealing lip 902. The skeleton 901 abuts against the inner wall of the through-shaft cavity 301, and the elastic sealing lip 902 abuts against the machine shaft 1. The two second sealing rings 9 are installed in opposite directions. The structure of the second sealing ring 9 is a skeleton 901 oil seal structure, which can provide higher contact pressure and tighter fit, and its sealing performance is better than that of O-rings and other sealing rings.

[0040] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 1.

[0041] Example 3

[0042] This embodiment is a third embodiment of a forming paper unwinding machine. This embodiment is similar to embodiment 2, except that, as Figure 1 and Figure 2 As shown, the sealing cavity 3 includes a main body 307 and a pressure cover 308, both of which are sleeved on the outside of the machine shaft 1 and rotatably connected to the machine shaft 1. The pressure cover 308 is detachably connected to one side of the main body 307. The pressure cover 308, the main body 307, and the machine shaft 1 form a liquid cavity 304. The sealing cavity 3 is divided into a detachable main body 307 and a pressure cover 308, which facilitates the replacement or maintenance of the sealing components when necessary.

[0043] Furthermore, a connecting ring 309 is provided on the outer side of the sealing duct 3, and the connecting ring 309 fits and connects to the inner wall of one end of the casing 2. This connection method provides better sealing and reduces the risk of pulp leakage.

[0044] Furthermore, it also includes multiple first screws (not shown in the figure) and multiple second screws 10. The connecting ring 309 is connected to the housing 2 by the multiple first screws, and the pressure cap 308 is connected to the main body 307 by the multiple second screws 10. The screws can be adjusted to adjust the tightness of the connection as needed to ensure the reliability and sealing of the connection. Moreover, the screw connection method facilitates disassembly and installation, making it convenient for workers to open the pressure cap 308 or remove the main body 307 to inspect and maintain the equipment components.

[0045] Other features, working principles, and beneficial effects of this embodiment are the same as those of Embodiment 2.

[0046] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description, and it is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A forming paper defibrator, comprising a rotary driving mechanism, a machine shaft (1), a sealing assembly and a machine housing (2), the machine shaft (1) being connected with a power output end of the rotary driving mechanism, the machine shaft (1) being rotationally connected with the machine housing (2) through the sealing assembly, and a stirring cavity (201) being formed between the machine shaft (1) and the machine housing (2); characterized in that, The sealing can (3) is provided with a shaft passing cavity (301), a water inlet (302) and a water outlet (303), the machine shaft (1) passes through the shaft passing cavity (301) and is rotationally connected with the shaft passing cavity (301); the sealing assembly is located between the shaft passing cavity (301) and the machine shaft (1) and is connected with both respectively; the shaft passing cavity (301) has a liquid cavity (304) surrounded by at least part of the inner wall and the machine shaft (1), the water inlet (302) and the water outlet (303) are communicated with the liquid cavity (304) respectively; the sealing assembly has at least part located in the liquid cavity (304).

2. A former for a paper defibrator according to claim 1, characterized in that The sealing assembly comprises a stationary ring (4), a movable ring (5) and an elastic member (6), the machine shaft (1) and the shaft passing cavity (301) are respectively provided with a first abutting portion (7) and a second abutting portion (305); the movable ring (5) and the stationary ring (4) are both sleeved outside the machine shaft (1) and are respectively fixedly connected and rotationally connected with the machine shaft (1); the two ends of the elastic member (6) are respectively abutted with the first abutting portion (7) and one side of the movable ring (5); the other side of the movable ring (5) is abutted with one side of the stationary ring (4); the other side of the stationary ring (4) is abutted with the second abutting portion (305); the surface of the movable ring (5) and the stationary ring (4) in contact and the elastic member (6) are all located in the liquid cavity (304); the machine shell (2) is connected with the machine shaft (1) through the sealing can (3).

3. A former for a paper defibrator according to claim 2, characterized in that Further comprising a first sealing ring (8); the outer side of the stationary ring (4) is provided with a limiting groove (401), the first sealing ring (8) is sleeved on the limiting groove (401) and is abutted with the inner wall of the limiting groove (401), the outer side of the first sealing ring (8) is abutted with the inner wall of the shaft passing cavity (301).

4. A former for a paper defibrator according to claim 2, characterized in that Further comprising a plurality of second sealing rings (9), the second sealing rings (9) are all sleeved outside the machine shaft (1) and are abutted with the machine shaft (1), the outer sides of the second sealing rings (9) are all abutted with the inner wall of the shaft passing cavity (301), the adjacent two second sealing rings (9) are mutually abutted, the inner wall of the shaft passing cavity (301) is provided with a third abutting portion (306), one end of the second sealing ring (9) located at the end is abutted with the third abutting portion (306).

5. A forming paper deflaker according to claim 4, characterised in that The second sealing ring (9) comprises a skeleton (901) and an elastic sealing lip (902) connected with the skeleton (901), the skeleton (901) is abutted with the inner wall of the shaft passing cavity (301), the elastic sealing lip (902) is abutted with the machine shaft (1).

6. A forming paper deflaker according to claim 1, characterized in that The sealing can (3) comprises a main body (307) and a gland (308) which are all sleeved outside the machine shaft (1) and are rotationally connected with the machine shaft (1), the gland (308) is detachably connected with one side of the main body (307), the gland (308), the main body (307) and the machine shaft (1) surround the liquid cavity (304).

7. A forming paper defibrator according to claim 6, characterized in that The outer side of the sealing tube (3) is provided with a connecting ring (309) which is attached to the inner wall of one end of the casing (2).

8. A former for a paper defibrator according to claim 7, characterized in that A plurality of first screws and a plurality of second screws (10) are further included, the connecting ring (309) is connected to the casing (2) through the plurality of first screws, and the gland (308) is connected to the main body (307) through the plurality of second screws (10).

9. A forming paper deflaker according to claim 1, wherein The water inlet (302) and the water outlet (303) are located outside the stirring cavity (201), and the water inlet (302) and the water outlet (303) are located at the bottom and the top of the sealing tube (3) respectively.

10. A forming paper deflaker according to any one of claims 1 to 9, characterized in that The elastic member (6) adopts a spring structure, and the elastic member (6) is sleeved outside the machine shaft (1).

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