Squeezing and separating unit and squeezing and separating device

Abstract

The utility model provides a squeezing and separating unit and a squeezing and separating device, and relates to the technical field of squeezer devices, a filter screen is sleeved on a compression roller component, external alkali liquor penetrates through the filter screen to enter a flowing cavity, compression roller end covers are arranged at openings at two ends of the compression roller component, and the compression roller component and the compression roller end covers are arranged in the flowing cavity. The connecting seam allowance between the compression roller component and the compression roller end cover is obliquely arranged, so that a flow guide effect can be achieved, alkali liquor can be guided into a flowing cavity in the compression roller component, materials are squeezed more completely, the quality of the materials is effectively improved, and the problems that in the prior art, due to the fact that the seam allowance position of the compression roller end cover is a right angle, the alkali liquor flows non-directionally, and the quality of the materials is affected are solved. The materials at the spigot position of the end cover are not completely squeezed and are not uniform, so that the quality of the materials is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressing machines, in particular to a pressing and separating unit and a pressing and separating device. Background Art

[0002] The pressing machine in the stock solution workshop mainly presses the pulp porridge to press and separate the alkali cellulose and the alkali solution. The pressing roller is a separating component, and the stainless steel mesh is coated on the pressing roller. The stainless steel meshes are welded to each other. The pressing holes are circular straight holes with a diameter of 1 mm, and the position of the stopper of the pressing roller end cover is a right angle.

[0003] However, the right angle at the position of the stopper of the pressing roller end cover causes the alkali solution to flow in an undirected manner, resulting in incomplete pressing of the material at the position of the stopper of the end cover and uneven material, thus affecting the quality of the material. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pressing and separating unit and a pressing and separating device, so as to alleviate the technical problems existing in the prior art that the right angle at the position of the stopper of the pressing roller end cover causes the alkali solution to flow in an undirected manner, resulting in incomplete pressing of the material at the position of the stopper of the end cover and uneven material, thus affecting the quality of the material.

[0005] In a first aspect, the pressing and separating unit provided by the utility model includes: a pressing roller member, a pressing roller end cover and a filter screen;

[0006] The pressing roller member is of a cylindrical structure, and a flow cavity is formed inside the pressing roller member;

[0007] Both ends of the pressing roller member are provided with the pressing roller end covers, and the connection stopper between the pressing roller member and the pressing roller end cover is inclined to guide the alkali solution into the flow cavity;

[0008] The filter screen is sleeved on the pressing roller member, and the external alkali solution passes through the filter screen and enters the flow cavity.

[0009] In an optional embodiment,

[0010] The pressing roller member includes a pressing roller main shaft, a pressing roller support and a support ring;

[0011] The pressing roller main shaft is configured to be able to rotate along its own axis. One end of the pressing roller support is fixedly connected to the pressing roller main shaft, and the other end of the pressing roller support is fixedly connected to the support ring;

[0012] The filter screen is sleeved on the support ring.

[0013] In an optional embodiment,

[0014] A flow cavity is formed by enclosing between the inner wall of the support ring and the outer surface of the pressure roller main shaft.

[0015] In an alternative embodiment,

[0016] The support ring has a plurality of first openings, and the lye passing through the filter screen enters the flow cavity through the first openings.

[0017] In an alternative embodiment,

[0018] The outer surface of the support ring is provided with grooves, the grooves are communicated with the first openings, and the grooves are used for guiding the lye in the gap between the support ring and the filter screen to the first openings.

[0019] In an alternative embodiment,

[0020] Each pressure roller support has a second opening, and the second opening is located in the flow cavity.

[0021] In an alternative embodiment,

[0022] The pressure roller end cover is threadedly connected to the pressure roller support.

[0023] In an alternative embodiment,

[0024] The pressure roller end cover is provided with a liquid outlet, the liquid outlet is communicated with the flow cavity, and the lye in the flow cavity flows out through the liquid outlet.

[0025] In an alternative embodiment,

[0026] The filter screen has a plurality of filter holes, and the filter holes are in a "Y" shape;

[0027] A plurality of the filter screens are arranged in sequence along the axial direction of the pressure roller member.

[0028] In a second aspect, the pressing and separating device provided by the present invention includes a liquid storage tank and the pressing and separating unit;

[0029] The liquid storage tank is used for storing the slurry;

[0030] Two pressing and separating units are provided, the bottoms of the two pressing and separating units are both arranged in the slurry, and the two pressing and separating units are attached to each other.

[0031] The pressing and separating unit provided by the present utility model is such that by sleeving a filter net on the roller member, external lye passes through the filter net and enters the flow cavity. At both ends of the roller member, roller end caps are provided. The connecting spigot between the roller member and the roller end cap is inclined, which can play a role in guiding the flow, and can guide the lye into the flow cavity inside the roller member, making the material pressing more complete, effectively improving the material quality, and alleviating the technical problem existing in the prior art that the right-angle position of the spigot of the roller end cap causes the lye to flow in an undirected manner, resulting in incomplete pressing of the material at the spigot position of the end cap and uneven material, thus affecting the material quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic diagram of the overall structure of the pressing and separating unit provided by an embodiment of the present utility model;

[0034] Figure 2 is Figure 1 an enlarged view of the structure at A in

[0035] Figure 3 It is a schematic diagram of the structure of the filter net in the pressing and separating unit provided by an embodiment of the present utility model;

[0036] Figure 4 It is a schematic diagram of the structure of the filter holes of the filter net in the pressing and separating unit provided by an embodiment of the present utility model;

[0037] Figure 5 It is a schematic diagram of the overall structure of the pressing and separating device provided by an embodiment of the present utility model.

[0038] Reference numerals: 100 - roller member; 110 - roller main shaft; 120 - roller support; 121 - second opening; 130 - support ring; 131 - first opening; 132 - groove; 140 - flow cavity; 200 - roller end cap; 210 - connecting spigot; 300 - filter net; 310 - filter hole; 400 - liquid outlet; 500 - liquid storage tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] The following will describe in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0043] As Figure 1 shown, the pressing and separating unit provided in this embodiment includes: a pressing roller member 100, a pressing roller end cover 200, and a filter screen 300; the pressing roller member 100 is a cylindrical structure, both ends of the pressing roller member 100 have openings, and a flow cavity 140 is formed inside the pressing roller member 100.

[0044] Pressing roller end covers 200 are provided at both openings of the pressing roller member 100, and the connecting stop 210 between the pressing roller member 100 and the pressing roller end cover 200 is inclined. The inclined connecting stop 210 plays a role in guiding the flow, enabling the liquid caustic soda to flow directionally. The caustic soda solution immediately flows inward and then flows into the flow cavity 140, and then is discharged externally, reducing the wetting of the material by the liquid caustic soda at the end cover position.

[0045] The filter screen 300 is sleeved on the pressing roller member 100, and the external caustic soda solution passes through the filter screen 300 and enters the flow cavity 140.

[0046] Specifically, as Figure 3 , Figure 4 shown, the filter screen 300 has a plurality of filter holes 310, and the filter holes 310 are in a "Y" shape. For example, the outer opening diameter of the filter hole 310 is 1.2 mm, and the diameter of the other side is 1.0 mm. After optimization and adjustment, the diameter of one side increases, increasing the flow rate of the filtered lye, improving the filtering effect, and significantly improving the dehydration and pressing effect.

[0047] A plurality of filter screens 300 are sequentially arranged along the axial direction of the press roll member 100, and the number of filter screens 300 is minimized as much as possible to avoid the weld between the filter screens 300 affecting the pressing effect of the material.

[0048] In the pressing and separating unit provided in this embodiment, by sleeving the filter screen 300 on the press roll member 100, the external lye passes through the filter screen 300 and enters the flow cavity 140. Press roll end caps 200 are provided at both openings at the two ends of the press roll member 100. The connecting stop 210 between the press roll member 100 and the press roll end cap 200 is inclined, which can play a role in guiding the flow, and can guide the lye into the flow cavity 140 inside the press roll member 100, making the material pressing more complete, effectively improving the material quality, and alleviating the technical problem in the prior art that the stop position of the press roll end cap 200 is a right angle, resulting in the non-directional flow of the lye, incomplete pressing of the material at the stop position of the end cap, and uneven material, thus affecting the material quality.

[0049] On the basis of the above embodiment, as Figure 2 shown, in an optional implementation manner, the press roll member 100 in the pressing and separating unit provided in this embodiment includes a press roll main shaft 110, a press roll support 120, and a support ring 130; the press roll main shaft 110 is configured to be able to rotate along its own axis, and the press roll main shaft 110 is connected to an external driving device as a rotating shaft. One end of the press roll support 120 is fixedly connected to the press roll main shaft 110, and the other end of the press roll support 120 is fixedly connected to the support ring 130; the filter screen 300 is sleeved on the support ring 130.

[0050] A flow cavity 140 is formed by enclosing between the inner wall of the support ring 130 and the outer surface of the press roll main shaft 110.

[0051] The rotation of the pressing roller main shaft 110 drives the pressing roller support 120 to move together with the pressing roller main shaft 110. In the pressing device, two pressing and separating units need to be provided, and the two pressing and separating units rotate in different directions. The alkali cellulose in the pulp porridge fills the bottom of the pressing roller separating unit through a pipeline. When the two pressing roller main shafts 110 rotate, the pulp porridge is filtered on the filter screen 300. The filter screen 300 takes away the pressed alkali cellulose and enters the next process, while the alkali liquid passing through the filter screen 300 will enter the flow chamber 140, and finally the alkali liquid is discharged from the flow chamber 140.

[0052] In an alternative embodiment, the support ring 130 has a plurality of first openings 131, and the alkali liquid passing through the filter screen 300 enters the flow chamber 140 through the first openings 131.

[0053] Specifically, after the liquid alkali enters the filter screen 300, it passes through the annular gap between the filter screen 300 and the pressing roller support 120, and then enters the flow chamber 140 through the first openings 131.

[0054] In an alternative embodiment, the outer surface of the support ring 130 is provided with grooves 132, and the grooves 132 are communicated with the first openings 131. The grooves 132 are used to guide the alkali liquid in the gap between the support ring 130 and the filter screen 300 to the first openings 131.

[0055] In an alternative embodiment, each pressing roller support 120 has a second opening 121, and the second opening 121 is located in the flow chamber 140.

[0056] In an alternative embodiment, a liquid outlet 400 is provided on the pressing roller end cover 200, and the liquid outlet 400 is communicated with the flow chamber 140. The alkali liquid in the flow chamber 140 flows out through the liquid outlet 400, which is convenient for the discharge of the liquid alkali.

[0057] Specifically, after the liquid alkali enters the filter screen 300, it passes through the gap between the filter screen 300 and the pressing roller support 120, then enters the grooves 132 for diversion, and then passes through the first openings 131. Subsequently, it enters the second openings 121 and enters the flow chamber 140, and finally is discharged through the liquid outlet 400 provided on the pressing roller end cover 200.

[0058] In an alternative embodiment, the pressing roller end cover 200 is threadedly connected to the pressing roller support 120 to connect the pressing roller end cover 200 to the pressing roller support 120.

[0059] Specifically, the press roll end cover 200 and the press roll support 120 are connected by bolts, forming a cavity open on both sides. When the slurry is pressed at the end cover position, after the liquid caustic soda is extruded by the two press rolls, a large amount of caustic soda solution passes through the filter screen 300, through the annular gap between the filter screen 300 and the press roll support 120, and after being diverted by the groove 132, it enters the first opening 131, and then enters the cavity formed by the press roll end cover 200 and the press roll support 120. It flows towards the side of the press roll support 120 along the 45-degree chamfer of the press roll stop. Part of it enters the flow cavity 140 from the second opening 121, and the other part of the caustic soda solution flows downward along the opening on one side of the cavity formed by the press roll end cover 200 and the press roll support 120, and flows downward into the flow cavity 140 along the diversion groove between the press roll end cover 200 stop and the press roll support 120, and is discharged through the external drain port. In this way, the caustic soda solution at the position of the press roll end cover 200 can flow into the flow cavity 140 in a directional manner through the chamfer, thereby reducing the accumulation of caustic soda solution in the cavity between the press roll end cover 200 and the press roll support 120, and thus avoiding the probability of the caustic soda solution at the end cover position flowing in an indefinite direction and wetting the cellulose reversely when there is a right-angle end cover stop.

[0060] The pressing and separating unit provided in this embodiment increases the filtering area of the filter screen 300. The pressing liquid caustic soda at the stop of the press roll end cover 200 is fully discharged through the chamfer of the end cover stop. With the conical horn hole design, the flow rate of the filtered caustic soda solution is increased, the filtering effect is improved, the pressing effect is greatly improved, the opening rate is increased, thereby enhancing the filtering area and effect of the press roll, and reducing the impact on the material quality.

[0061] On the basis of the above embodiment, as Figure 5 shown, wherein, Figure 5 the arrow in represents the liquid flow direction. The pressing and separating device provided in this embodiment includes a liquid storage tank 500 and a pressing and separating unit; the liquid storage tank 500 has a through hole arranged in the vertical direction, and the slurry flows into the liquid storage tank 500 from bottom to top through the through hole, and the slurry is stored in the liquid storage tank 500.

[0062] There are two pressing and separating units. The bottoms of the two pressing and separating units are both arranged in the slurry, and the two pressing and separating units are mutually attached, and the rotation directions of the two pressing and separating units are opposite, so that the slurry located between the two pressing and separating units can flow upward to press and separate the caustic soda solution from the slurry.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A squeezing and separating unit, characterized in that: include: A pressure roller component (100), a pressure roller end cover (200) and a filter screen (300); The pressure roller component (100) is a cylindrical structure, and a flow cavity (140) is formed inside the pressure roller component (100); The roller end covers (200) are provided at both end openings of the roller component (100), and the connection stop (210) between the roller component (100) and the roller end cover (200) is arranged at an angle so as to guide the alkali solution into the flow cavity (140); The filter screen (300) is sleeved on the pressure roller component (100), and external alkali solution passes through the filter screen (300) and enters the flow cavity (140).

2. The pressing and separating unit according to claim 1, characterized in that: The pressure roller component (100) comprises a pressure roller main shaft (110), a pressure roller support (120) and a support ring (130); The pressure roller main shaft (110) is configured to be rotatable along its own axis, one end of the pressure roller support (120) is fixedly connected to the pressure roller main shaft (110), and the other end of the pressure roller support (120) is fixedly connected to the support ring (130); The filter screen (300) is sleeved on the support ring (130).

3. The pressing and separating unit according to claim 2, characterized in that: The flow cavity (140) is formed between the inner wall of the support ring (130) and the outer surface of the pressure roller main shaft (110).

4. The pressing and separating unit according to claim 3, characterized in that: The support ring (130) has a plurality of first openings (131), and the alkali solution that passes through the filter screen (300) enters the flow chamber (140) through the first openings (131).

5. The squeezing and separating unit according to claim 4, characterized in that: The outer surface of the support ring (130) is provided with a groove (132), the groove (132) is connected to the first opening (131), and the groove (132) is used to guide the alkali liquid in the gap between the support ring (130) and the filter screen (300) into the first opening (131).

6. The pressing and separating unit according to claim 2, characterized in that: Each of the pressure roller supports (120) has a second opening (121), and the second opening (121) is located in the flow chamber (140).

7. The pressing and separating unit according to claim 2, characterized in that: The pressure roller end cover (200) is threadedly connected to the pressure roller support (120).

8. The pressing and separating unit according to claim 7, characterized in that: The pressure roller end cover (200) is provided with a liquid outlet (400), the liquid outlet (400) is communicated with the flow cavity (140), and the alkali liquid in the flow cavity (140) flows out through the liquid outlet (400).

9. The pressing and separating unit according to any one of claims 1 to 8, characterized in that: The filter net (300) has a plurality of filter holes (310), and the filter holes (310) are in a "Y" shape; The plurality of filter screens (300) are arranged in sequence along the axial direction of the pressure roller component (100).

10. A squeezing and separating device, characterized in that: It comprises a liquid storage tank (500) and a squeezing and separation unit as claimed in any one of claims 1 to 9; The liquid storage tank (500) is used for storing porridge; The two squeezing and separating units are provided with two, the bottoms of the two squeezing and separating units are both arranged in the paddle porridge, and the two squeezing and separating units are attached to each other.

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