Filter cloth arrangement assembly and filter cloth distributing, discharging and winding device

Abstract

The utility model provides a filter cloth tidying assembly and a filter cloth distributing, unloading and winding device, the filter cloth tidying assembly comprises at least two cloth guide rollers extending along the horizontal direction and parallel to each other; the cleaning device comprises a flushing component and a flushing back plate which are respectively arranged on the two sides of the filter cloth between the two adjacent cloth guide rollers; and an included angle is formed between the washing back plate and the corresponding filter cloth. According to the utility model, the included angle is formed between the washing back plate and the filter cloth, so that large-area contact between the filter cloth and the washing back plate can be avoided when the filter cloth is placed, the friction force generated between the filter cloth and the washing back plate can be reduced, and the tensile force borne by the filter cloth in the length direction of the filter cloth in the cloth placing process is further reduced; the deformation quantity of the filter cloth can be reduced so as to ensure that the filter cloth has enough width when bearing materials, and the wrapping effect of the filter cloth on the materials is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and particularly relates to a filter cloth finishing component and a filter cloth placing, unloading and winding device equipped with the filter cloth finishing component. Background Art

[0002] As the amount of urban sewage continues to grow, the number of sewage treatment facilities has also increased, and the amount of excess sludge, a byproduct of sewage treatment, has also increased. Properly handling and disposing of this ever-increasing amount of sludge has become a pressing environmental protection issue in my country. Excess sludge typically has a moisture content exceeding 80%. Sludge dewatering is a critical step in its treatment. However, the difficulty in deep dewatering sludge has become a bottleneck limiting its harmless and resourceful treatment.

[0003] There are many methods for solid-liquid separation, including pressing, extrusion, and centrifugation, and corresponding solid-liquid separation equipment is also diverse. Among them, stacking extrusion devices are widely used because they have high extrusion pressure, high extrusion limit, and long extrusion time, resulting in better dehydration effect.

[0004] The filter cloth of the stacking extrusion device is generally an ultra-long continuous filter cloth. During operation, multiple layers of filter cloth need to be stacked and spread, and the sludge needs to be evenly spread between the filter cloths. For example, the Chinese utility model patent with application number CN202023099235.0 discloses a fixing device for laying laminated filter cloths. While laying the filter cloth, the sludge is laid on the filter cloth. Specifically, the proximal end of the filter cloth is first pressed tightly, and the discharge port of the sludge spreading mechanism is used to push the filter cloth forward. During the feeding process of the sludge spreading mechanism, the discharge port of the sludge spreading mechanism spreads the sludge evenly on the filter cloth.

[0005] After the water-containing material is dehydrated by filter pressing, it is necessary to unload the squeezed and dehydrated material from the filter cloth, then sort and clean the filter cloth before winding it onto the cloth roller. For example, the Chinese invention patent application number CN202210362468.X discloses a filter cloth unloading and unloading reeling device and a material cloth and material unloading system. The scrubber in the filter cloth sorting functional unit includes a high-pressure spray gun, a rotating brush, and a flushing back plate. The high-pressure spray gun and the rotating brush are on the same side of the filter cloth, opposite to the flushing back plate. The flushing back plate is located on the other side of the filter cloth. The flushing back plate is mainly used to stop the filter cloth when the high-pressure spray gun and the rotating brush are cleaning the filter cloth, ensuring the cleaning effect of the filter cloth.

[0006] To ensure the support of the flushing backplate for the filter cloth, it is typically placed in close proximity to the filter cloth. However, during use, when the material needs to be laid down, friction will be generated between the flushing backplate and the filter cloth. This friction will increase the tension on the filter cloth between the cloth roll roller and the filter cylinder. In particular, when the filter cloth is relatively loose, it will fall onto the flushing backplate below the filter cloth, generating significant friction with it during the release process, thereby increasing the tension on the filter cloth during release. This increased tension on the filter cloth increases the deformation of the filter cloth. Specifically, the deformation of the filter cloth along the length and width directions increases, while the width of the filter cloth decreases. This is not conducive to ensuring the proper wrapping of the material and can easily cause the material to flow out from both sides of the filter cloth.

[0007] Therefore, designing a filter cloth finishing assembly that can reduce the resistance to the filter cloth when placing the cloth has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0008] The utility model provides a filter cloth arranging component, which is used to solve the problem that the existing filter cloth arranging component has large resistance to the filter cloth when the filter cloth laying and unloading and winding devices are laying the cloth.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] The filter cloth finishing assembly includes: at least two cloth guide rollers extending in the horizontal direction and parallel to each other; a cleaner including a flushing component and a flushing back plate respectively arranged on both sides of the filter cloth between two adjacent cloth guide rollers; an angle is set between the flushing back plate and the corresponding filter cloth.

[0011] Furthermore, along the length direction of the filter cloth, the flushing back plate extends obliquely relative to the filter cloth; and / or, along the width direction of the filter cloth, the flushing back plate extends obliquely relative to the filter cloth.

[0012] Furthermore, the angle between the flushing back plate and the length direction of the filter cloth is greater than or equal to 2° and less than or equal to 5°; and / or the angle between the flushing back plate and the width direction of the filter cloth is greater than or equal to 2° and less than or equal to 5°.

[0013] Furthermore, a gap is provided between at least the flushing back plate provided on the lower side of the filter cloth and the filter cloth, and the gap between the flushing back plate and the filter cloth is greater than or equal to 10 mm and less than or equal to 15 mm.

[0014] Furthermore, the cloth guide roller includes a first cloth guide roller and a second cloth guide roller arranged above the first cloth guide roller, and the first cloth guide roller and the second cloth guide roller are arranged at intervals in the horizontal direction; according to the traveling direction of the filter cloth when the filter cloth is rolled up, the filter cloth passes around the second cloth guide roller and the first cloth guide roller in sequence; the cleaner corresponds to the filter cloth between the first cloth guide roller and the second cloth guide roller, and at least the washing back plate on the lower side of the filter cloth between the first cloth guide roller and the second cloth guide roller gradually increases the interval between the filter cloth and the filter cloth according to the traveling direction of the filter cloth when the filter cloth is rolled up.

[0015] Furthermore, the first cloth guide roller is arranged on a side of the second cloth guide roller away from the cloth winding roller; and the flushing back plate is arranged close to the first cloth guide roller.

[0016] Furthermore, the flushing back plate is configured as a flat plate, and an angle is provided between the flushing back plate as a whole and the filter cloth; or, the flushing back plate is bent and extended from the middle to the end in a direction away from the filter cloth, and the bending part of the flushing back plate extends along a straight line passing through the flushing back plate on the flushing back plate, and the parts of the flushing back plate located on both sides of the bending part are respectively provided with an angle with the filter cloth.

[0017] Furthermore, the flushing mechanism includes a branch pipe extending along the width direction of the filter cloth, and a spray pipe extending from the branch pipe in a direction perpendicular to the filter cloth, and a plurality of spray pipes are provided extending along the width direction of the filter cloth; a spray port is provided at one end of the spray pipe away from the branch pipe, and the width of the spray port along the length direction of the filter cloth is smaller than the inner diameter of the spray pipe, and the width of the spray port along the width direction of the filter cloth gradually increases in the direction away from the branch pipe.

[0018] Furthermore, it also includes a water collection and drainer, which is arranged below and around the filter cloth corresponding to the cleaning device, including a bottom wall and a surrounding wall, and at least the upper end of the surrounding wall corresponding to the flushing back plate extends to a position higher than the liquid spray outlet of the flushing component; the end of the flushing back plate is connected to the surrounding wall of the water collection and drainer.

[0019] The utility model also provides a filter cloth laying, unloading and winding device, which comprises the filter cloth finishing component mentioned above.

[0020] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art.

[0021] 1. The utility model sets an angle between the flushing back plate and the filter cloth. When the filter cloth is cleaned, the filter cloth is slightly deformed by the impact of the washing liquid and then fits with the flushing back plate, thereby ensuring the cleaning effect of the filter cloth. Moreover, it can ensure that when the filter cloth is laid out, a large area of ​​contact between the filter cloth and the flushing back plate is avoided, thereby reducing the friction generated between the filter cloth and the flushing back plate, and further reducing the tension along the length direction of the filter cloth during the laying process. The deformation of the filter cloth can be reduced to ensure that the filter cloth has sufficient width when carrying materials, thereby ensuring the wrapping effect of the filter cloth on the materials.

[0022] 2. The utility model sets a flushing back plate so that the interval between the back plate and the filter cloth gradually increases according to the direction of travel of the filter cloth when the filter cloth is rolled up. It can also make the impact direction of the washing liquid no longer completely perpendicular to the filter cloth, but produce a small inclination. Specifically, the impact direction of the washing liquid is tilted downward relative to the filter cloth, which can further improve the flushing effect on the filter cloth and quickly remove the stains on the filter cloth.

[0023] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the water-containing material dehydration equipment in the embodiment of the utility model;

[0026] Figure 2 This is a schematic cross-sectional view of a water-containing material dehydration device in an embodiment of the present utility model;

[0027] Figure 3 For the embodiment of the utility model Figure 2 Enlarged view of point C in the middle;

[0028] Figure 4 This is a schematic diagram of the structure of the cleaning device and the filter cloth in the embodiment of the present utility model;

[0029] Figure 5 It is a structural schematic diagram of the flushing component in an embodiment of the present utility model.

[0030] Description of the main components in the figure:

[0031] 1. Cloth pushing and spreading device; 2. Filter cylinder; 3. Discharge collecting hopper; 4. Frame; 41. Cloth guide roller; 411. First cloth guide roller; 412. Second cloth guide roller; 42. Cleaner; 421. Flushing component; 4211. Branch pipe; 4212. Liquid spray pipe; 4213. Liquid spray port; 422. Flushing back plate; 43. Water collecting and draining device; 5. First cloth pressing assembly; 6. Second cloth pressing assembly; 7. Cloth winding roller; 71. Filter cloth; 8. Extrusion equipment.

[0032] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0036] like Figures 1 to 5 As shown, in an embodiment of the present invention, a dehydration device for water-containing materials is introduced, including a cloth pushing and spreading device 1 and a filter cylinder 2. The cloth pushing and spreading device 1 spreads the filter cloth 71 in the filter cylinder 2 and sprays the material to be processed onto the filter cloth 71.

[0037] During the laying process, the filter cloth 71 is fixed by two sets of cloth pressing assemblies.

[0038] In some specific embodiments, the cloth pushing and spreading device 1 is configured to move back and forth between a first side and a second side opposite to the filter cylinder 2 to fold the filter cloth 71 and spray the material to be processed onto the filter cloth 71 .

[0039] In the moving direction of the filter cloth 71 , a first cloth pressing assembly 5 and a second cloth pressing assembly 6 are respectively provided on the first side and the second side opposite to each other at the top of the filter cylinder 2 .

[0040] The water-containing material dehydration equipment also includes a filter cloth placing and unloading and winding device, which includes a unloading component for unloading the dry material after extrusion and dehydration from the filter cloth 71, a filter cloth finishing component for leveling and cleaning the filter cloth 71 from which the dry material is removed, and a filter cloth unwinding component for winding up the filter cloth 71 and placing the cloth.

[0041] The filter cloth rewinding and unwinding assembly includes a cloth winding roller 7, on which the filter cloth 71 is rolled up. The cloth winding roller 7 containing the filter cloth 71 and the cloth pushing and spreading device 1 are located on the same side of the filter cylinder 2, and the spreading port of the cloth pushing and spreading device 1 is higher than the upper edge of the filter cylinder 2.

[0042] During the process of laying the filter cloth 71 from the first side to the second side of the filter cylinder 2, when the cloth pushing and spreading device 1 is outside the filter cylinder 2, the first cloth pressing assembly 5 presses the filter cloth 71 on the first side down on the filter cylinder 2; the cloth pushing and spreading device 1 pushes the filter cloth 71 and moves toward the second side of the filter cylinder 2, and at the same time, spreads the material evenly on the filter cloth 71, and the other end of the filter cloth 71 is dragged out from the cloth winding roller 7; when reaching the second side of the filter cylinder 2, the second cloth pressing assembly 6 presses the filter cloth 71 on the second side down on the filter cylinder 2, and the cloth pushing and spreading device 1 returns to its original position.

[0043] During the retraction process of the cloth pushing and spreading device 1, and / or after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 is pulled out; after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 moves again to press the filter cloth 71 on the first side down on the filter cylinder 2.

[0044] By repeating this movement, several layers of the material to be processed wrapped by the filter cloth 71 are laid up and down in the filter cylinder 2 .

[0045] The filter cylinder 2 further comprises an extrusion device 8, which is located above the filter cylinder 2 and is used to extrude the material.

[0046] After the extrusion is completed, the cloth roll unloading process begins.

[0047] The cloth winding roller 7 in the filter cloth unloading and unloading reeling device is driven by a motor to rotate, driving the filter cloth 71 to move and recycle the filter cloth 71. The squeezed and dehydrated material is carried on the filter cloth 71 and leaves the filter cylinder 2 along with the filter cloth 71 to enter the filter cloth unloading and unloading reeling device. After being discharged by the unloading assembly, the dehydrated material falls into the discharge collection hopper 3 below. The filter cloth 71 is cleaned and leveled by the filter cloth finishing assembly before being rewound on the cloth winding roller 7.

[0048] In this embodiment, the material to be processed is a solid-liquid mixture, for example, a water-containing material, and there is no limitation on the water content.

[0049] In this embodiment, the water-containing material dehydration equipment is preferably used for solid-liquid separation of sludge with high water content.

[0050] In this embodiment, the filter cloth placing, unloading and winding device and the cloth pushing and spreading device 1 are all installed on a frame 4.

[0051] In this embodiment, to ensure that the material is properly wrapped, the width of the filter cloth 71 is set to be greater than the width of the internal space of the filter cylinder 2, and the width of the spreading opening of the cloth-pushing and spreading device 1 is less than or equal to the width of the internal space of the filter cylinder 2. After the cloth-pushing and spreading device 1 spreads the material on the filter cloth 71, the movable bottom plate of the filter cylinder 2 moves downward, and the filter cloth 71 carrying the material falls into the filter cylinder 2. The side edges of the filter cloth 71 are blocked by the filter cylinder 2, and the material is wrapped from both sides, preventing the material from flowing out of the filter cloth 71.

[0052] In some preferred embodiments, there is a certain distance between the cloth pressing position of the first cloth pressing assembly 5 and the internal space of the filter cylinder 2. Therefore, when the movable bottom plate of the filter cylinder 2 moves downward, the part of the filter cloth 71 that exceeds the internal space of the filter cylinder 2 is bent upward under the obstruction of the first side of the filter cylinder 2, so that the side of the material close to the cloth pushing and spreading device 1 is also wrapped by the filter cloth 71.

[0053] The filter cloth finishing assembly includes a plurality of cloth guide rollers 41 arranged between the cloth winding roller 7 and the filter cylinder 2 . After the filter cloth 71 passes around the cloth guide rollers 41 , the first cloth pressing assembly 5 presses the filter cloth 71 onto the filter cylinder 2 .

[0054] The filter cloth finishing assembly also includes a washer 42, which is used to clean the filter cloth 71 after unloading. The washer 42 includes a flushing member 421 and a flushing back plate 422. The flushing member 421 and the flushing back plate 422 are respectively arranged on both sides of the filter cloth 71. The flushing member 421 corresponds to the flushing back plate 422, and the filter cloth 71 passes between the flushing member 421 and the flushing back plate 422. The flushing member 421 sprays washing liquid to flush the filter cloth 71, and the flushing back plate 422 on the opposite side supports the filter cloth 71, and the filter cloth 71 is attached to the flushing back plate 422.

[0055] In the prior art, in order to ensure the supporting effect of the flushing back plate 422 on the filter cloth 71, the flushing back plate 422 is usually set in a position close to the filter cloth 71. The flushing back plate 422 and the filter cloth 71 are parallel and fit together, which can ensure the cleaning effect of the filter cloth 71 during the winding process of the filter cloth 71.

[0056] After the filter cloth 71 is unloaded, the filter cloth 71 is tightened, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the filter cloth 71 is tightened again, and the

[0057] In particular, in some possible embodiments, during the cloth pushing and spreading process, in order to reduce the tension along the length direction on the filter cloth 71 and ensure the width size of the filter cloth 71, before the cloth pushing and spreading device 1 is fed forward, the cloth winding roller 7 is first driven to rotate to unwind the filter cloth 71, and the filter cloth 71 required in the cloth pushing and spreading process is reserved. Alternatively, during the cloth pushing and spreading process, the cloth winding roller 7 is simultaneously driven to rotate to unwind the filter cloth 71, thereby avoiding obstruction of the cloth winding roller 7 to the cloth laying process, reducing the tension along the length direction on the filter cloth 71 during the cloth laying process, and reducing the deformation of the filter cloth 71.

[0058] That is, during the cloth laying process, the filter cloth 71 is in a relatively loose state. When the filter cloth 71 in the loose state passes through the cleaner 42, the filter cloth 71 will fall on the flushing back plate 422 below the filter cloth 71, and a large friction force will be generated between the filter cloth 71 and the flushing back plate 422 below the filter cloth 71, which is not conducive to reducing the deformation of the filter cloth 71.

[0059] like Figures 2 to 4 As shown, in an embodiment of the present invention, a filter cloth finishing assembly is provided to reduce the friction between the flushing back plate 422 and the filter cloth 71.

[0060] In this embodiment, the filter cloth finishing assembly includes at least two cloth guide rollers 41 extending in a horizontal direction and parallel to each other, and a cleaner 42. The cleaner 42 corresponds to the filter cloth 71 between two adjacent cloth guide rollers 41, and includes a flushing component 421 and a flushing back plate 422 respectively arranged on both sides of the filter cloth 71 between the two adjacent cloth guide rollers 41. An angle is provided between the flushing back plate 422 and the corresponding filter cloth 71.

[0061] Thus, during the process of winding the filter cloth 71 and cleaning the filter cloth 71, the filter cloth 71 is slightly deformed under the impact of the washing liquid and then fits into the flushing back plate 422, which can ensure the cleaning effect of the filter cloth 71. In addition, it can ensure that the filter cloth 71 does not contact the flushing back plate 422 when the cloth is laid out, or only has a small amount of contact with the flushing back plate 422, which can reduce the resistance of the flushing back plate 422 to the filter cloth 71 when the cloth is laid out.

[0062] In some possible embodiments, the flushing back plate 422 is configured as a flat plate, and an angle is provided between the entire flushing back plate 422 and the filter cloth 71 .

[0063] In some other possible embodiments, the flushing back plate 422 bends and extends from the middle to the end portion in a direction away from the filter cloth 71 , and portions of the flushing back plate 422 on both sides of the bend are provided with angles with the filter cloth 71 .

[0064] In some specific embodiments, the curved portion of the flushing back plate 422 extends along a straight line passing through the flushing back plate 422, and the flushing back plates 422 on both sides of the straight line bend and extend from the straight line in a direction away from the filter cloth 71 to form the curved portion. The straight line can be a straight line of any angle.

[0065] In some possible embodiments, the extending direction of the curved portion of the flushing back plate 422 is parallel to the width direction of the filter cloth 71 .

[0066] In some possible embodiments, the extension direction of the curved portion of the flushing back plate 422 is parallel to the length direction of the filter cloth 71 .

[0067] In some possible embodiments, the curved portion of the flushing back plate 422 extends along the length direction of the filter cloth 71 , and the distance between the curved portion of the flushing back plate 422 and the filter cloth 71 gradually increases according to the moving direction of the filter cloth 71 when the filter cloth 71 is rolled up.

[0068] Preferably, the angle between the flushing back plate 422 and the filter cloth 71 is greater than or equal to 2° and less than or equal to 5°.

[0069] In this embodiment, by setting an angle between the flushing back plate 422 and the filter cloth 71, a large area of ​​contact between the filter cloth 71 and the flushing back plate 422 can be avoided during the cloth placing process, thereby reducing the friction generated between the filter cloth 71 and the flushing back plate 422, and further reducing the tension along the length direction of the filter cloth 71 during the cloth placing process. The deformation of the filter cloth 71 can be reduced to ensure that the filter cloth 71 has sufficient width when carrying the material, thereby ensuring the wrapping effect of the filter cloth 71 on the material.

[0070] In some possible embodiments, along the length direction of the filter cloth 71, the flushing back plate 422 extends obliquely relative to the filter cloth 71, and the angle between the flushing back plate 422 and the length direction of the filter cloth 71 is greater than or equal to 2° and less than or equal to 5°.

[0071] In some possible embodiments, along the width direction of the filter cloth 71, the flushing back plate 422 extends obliquely relative to the filter cloth 71, and the angle between the flushing back plate 422 and the width direction of the filter cloth 71 is greater than or equal to 2° and less than or equal to 5°.

[0072] In some possible embodiments, the flushing back plate 422 extends obliquely relative to the filter cloth 71 along the length direction of the filter cloth 71, and also extends obliquely relative to the filter cloth 71 along the width direction of the filter cloth 71. The angle between the flushing back plate 422 and the length direction of the filter cloth 71 is greater than or equal to 2° and less than or equal to 5°, and the angle between the flushing back plate 422 and the width direction of the filter cloth 71 is greater than or equal to 2° and less than or equal to 5°.

[0073] In some specific embodiments, the cloth guide roller 41 includes a first cloth guide roller 411 and a second cloth guide roller 412 arranged above the first cloth guide roller 411, and the first cloth guide roller 411 and the second cloth guide roller 412 are arranged at intervals in the horizontal direction; according to the moving direction of the filter cloth 71 when the filter cloth 71 is rolled up, the filter cloth 71 passes around the second cloth guide roller 412 and the first cloth guide roller 411 in turn, and the cleaner 42 corresponds to the filter cloth 71 between the first cloth guide roller 411 and the second cloth guide roller 412.

[0074] In this embodiment, the cleaner 42 can be provided in only one group, or in multiple groups arranged at intervals along the length direction of the filter cloth 71. The flushing back plate 422 of the cleaner 42 can be provided on the lower side of the filter cloth 71 or on the upper side of the filter cloth 71.

[0075] In this embodiment, the flushing back plate 422, which is disposed at least on the lower side of the filter cloth 71 between the first cloth guide roller 411 and the second cloth guide roller 412, is spaced gradually apart from the filter cloth 71 in the direction of travel of the filter cloth 71 as the filter cloth 71 is wound. This reduces the contact area between the filter cloth 71 and the flushing back plate 422 during the unwinding process. Furthermore, during the rewinding process, when the flushing member 421 flushes the filter cloth 71, the filter cloth 71 comes into contact with the flushing back plate 422. The direction of impact of the washing liquid is no longer completely perpendicular to the filter cloth 71, but rather has a slight inclination. Specifically, the direction of impact of the washing liquid is tilted downward relative to the filter cloth 71, further enhancing the flushing effect on the filter cloth 71.

[0076] Preferably, in this embodiment, the flushing back plate 422 of at least one set of washers 42 is arranged on the lower side of the filter cloth 71 between the first cloth guide roller 411 and the second cloth guide roller 412 .

[0077] Preferably, in this embodiment, the flushing components 421 of at least one set of washers 42 are arranged opposite to the side of the filter cloth 71 used for wrapping the material.

[0078] In this embodiment, the filter cloth unloading and unloading rewinding device and the cloth pushing and spreading device 1 are arranged on the same side of the filter cylinder 2. The first cloth guide roller 411 is arranged on the side of the second cloth guide roller 412 away from the cloth winding roller 7. That is, the horizontal distance between the second cloth guide roller 412, which is arranged above, and the filter cylinder 2 is greater than the horizontal distance between the first cloth guide roller 411, which is arranged below, and the filter cylinder 2. According to the direction of travel of the filter cloth 71 when it is reeled up, the filter cloth 71 is sequentially wound around the second cloth guide roller 412 and the first cloth guide roller 411. At this time, the surface of the filter cloth 71 used for wrapping the material is turned to the upper side. That is, when the filter cloth 71 is between the first cloth guide roller 411 and the second cloth guide roller 412, the upper side of the filter cloth 71 is the surface used for wrapping the material. In this embodiment, by directly flushing the surface of the filter cloth 71 used for wrapping the material, the cleaning effect of the cleaner 42 on the filter cloth 71 can be improved.

[0079] In this embodiment, the filter cloth 71 is wound around the first cloth guide roller 411 and the second cloth guide roller 412. Specifically, the filter cloth 71 is in partial contact with the outer peripheral wall of the first cloth guide roller 411 and the second cloth guide roller 412, and is guided by the first cloth guide roller 411 and the second cloth guide roller 412, but is not wound around the first cloth guide roller 411 and the second cloth guide roller 412.

[0080] In some preferred embodiments, a gap is provided between at least the flushing back plate 422 disposed on the lower side of the filter cloth 71 and the filter cloth 71. The gap between the flushing back plate 422 and the filter cloth 71 is greater than or equal to 10 mm and less than or equal to 15 mm. Thus, when flushing the filter cloth 71, excessive deformation of the filter cloth 71 can be avoided. Furthermore, the resistance exerted by the flushing back plate 422 on the filter cloth 71 during the cloth laying process can be further reduced, or even eliminated.

[0081] In this embodiment, the filter cloth unloading and unloading and rewinding device further includes a water collection and drainage device 43. The water collection and drainage device 43 is disposed below and around the filter cloth 71 at a location corresponding to the cleaning device 42, and includes a bottom wall and a surrounding wall. At least the upper end of the surrounding wall at a location corresponding to the flushing back plate 422 extends to a position higher than the liquid spraying port 4213 of the flushing member 421. A drainage port is provided at the bottom of the water collection and drainage device 43, and is used to collect the washing liquid sprayed by the flushing member 421 and discharge it through the drainage port.

[0082] In this embodiment, the water collecting and draining device 43 is also used to support the flushing back plate 422. Specifically, the end of the flushing back plate 422 is connected to the surrounding wall of the water collecting and draining device 43.

[0083] In some specific embodiments, the cleaner 42 includes a set of flushing components 421 and a flushing back plate 422, the flushing back plate 422 is arranged on the lower side of the filter cloth 71 between the first cloth guide roller 411 and the second cloth guide roller 412, and the flushing component 421 is arranged on the upper side of the filter cloth 71 between the first cloth guide roller 411 and the second cloth guide roller 412.

[0084] Preferably, in this embodiment, the flushing back plate 422 is disposed close to the first cloth guide roller 411 , thereby facilitating reduction in the size of the water collecting and draining device 43 .

[0085] The two ends of the flushing back plate 422 extending along the width direction of the filter cloth 71 extend beyond the two sides of the filter cloth 71 , and the two ends of the flushing back plate 422 extending along the width direction of the filter cloth 71 are connected to the surrounding walls on both sides of the filter cloth 71 .

[0086] like Figure 5 As shown, in some preferred embodiments, the flushing mechanism includes a branch pipe 4211 extending along the width direction of the filter cloth 71, and a liquid spraying pipe 4212 extending from the branch pipe 4211 in a direction perpendicular to the filter cloth 71. The liquid spraying pipe 4212 is provided with a plurality of liquid spraying ports 4213 extending along the width direction of the filter cloth 71. The liquid spraying ports 4213 are provided at one end of the liquid spraying pipe 4212 away from the branch pipe 4211. The width of the liquid spraying ports 4213 along the length direction of the filter cloth 71 is smaller than the inner diameter of the liquid spraying pipe 4212. The width of the liquid spraying ports 4213 along the width direction of the filter cloth 71 gradually increases as the liquid spraying ports 4213 move away from the branch pipe 4211.

[0087] Through the above arrangement, the washing liquid can be sprayed out from the liquid spray port 4213 at a faster flow rate, ensuring the impact force on the filter cloth 71. At the same time, when the washing liquid is sprayed out from the liquid spray port 4213, it spreads along the width direction of the filter cloth 71, ensuring that the entire filter cloth 71 is fully cleaned.

[0088] Preferably, in this embodiment, a plurality of branch pipes 4211 are provided and arranged at intervals along the length direction of the filter cloth 71 .

[0089] In this embodiment, the projection of the flushing back plate 422 on the filter cloth 71 can cover the flushing area of ​​the flushing component 421 on the filter cloth 71 .

[0090] In this embodiment, the washing liquid can be water or a solution with additives added.

[0091] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments with equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. Filter cloth finishing components, including: The cloth guide rollers (41) extend in the horizontal direction and are provided with at least two mutually parallel ones; A cleaning device (42) includes a flushing member (421) and a flushing back plate (422) respectively arranged on both sides of the filter cloth (71) between two adjacent cloth guide rollers (41); It is characterized in that An angle is provided between the flushing back plate (422) and the corresponding filter cloth (71).

2. The filter cloth finishing assembly according to claim 1, characterized in that: Along the length direction of the filter cloth (71), the flushing back plate (422) extends obliquely relative to the filter cloth (71); and / or, Along the width direction of the filter cloth (71), the flushing back plate (422) extends obliquely relative to the filter cloth (71).

3. The filter cloth finishing assembly according to claim 2, characterized in that: The angle between the flushing back plate (422) and the length direction of the filter cloth (71) is greater than or equal to 2° and less than or equal to 5°; and / or, The included angle between the flushing back plate (422) and the width direction of the filter cloth (71) is greater than or equal to 2° and less than or equal to 5°.

4. The filter cloth finishing assembly according to any one of claims 1 to 3, characterized in that: A gap is provided between at least the flushing back plate (422) disposed on the lower side of the filter cloth (71) and the filter cloth (71), and the gap between the flushing back plate (422) and the filter cloth (71) is greater than or equal to 10 mm and less than or equal to 15 mm.

5. The filter cloth finishing assembly according to any one of claims 1 to 3, characterized in that: The cloth guide roller (41) includes a first cloth guide roller (411) and a second cloth guide roller (412) arranged above the first cloth guide roller (411), wherein the first cloth guide roller (411) and the second cloth guide roller (412) are arranged at intervals in the horizontal direction; according to the traveling direction of the filter cloth (71) when the filter cloth (71) is rolled up, the filter cloth (71) passes around the second cloth guide roller (412) and the first cloth guide roller (411) in sequence; The washer (42) corresponds to the filter cloth (71) between the first cloth guide roller (411) and the second cloth guide roller (412), and the washing back plate (422) disposed at least on the lower side of the filter cloth (71) between the first cloth guide roller (411) and the second cloth guide roller (412) gradually increases in spacing from the filter cloth (71) according to the traveling direction of the filter cloth (71) when the filter cloth (71) is rolled up.

6. The filter cloth finishing assembly according to claim 5, characterized in that: The first cloth guide roller (411) is arranged on a side of the second cloth guide roller (412) away from the cloth winding roller (7); The flushing back plate (422) is arranged close to the first cloth guide roller (411).

7. The filter cloth finishing assembly according to any one of claims 1 to 3, characterized in that: The flushing back plate (422) is configured as a flat plate, and an angle is provided between the entire flushing back plate (422) and the filter cloth (71); or, the flushing back plate (422) bends and extends from the middle to the end in a direction away from the filter cloth (71), and the bend of the flushing back plate (422) extends along a straight line on the flushing back plate (422) that passes through the flushing back plate (422), and portions of the flushing back plate (422) located on both sides of the bend respectively have angles provided between them and the filter cloth (71).

8. The filter cloth finishing assembly according to any one of claims 1 to 3, characterized in that: The flushing mechanism comprises a branch pipe (4211) extending in the width direction of the filter cloth (71), and a liquid spraying pipe (4212) extending from the branch pipe (4211) in a direction perpendicular to the filter cloth (71), wherein the liquid spraying pipe (4212) is provided with a plurality of liquid spraying pipes extending in the width direction of the filter cloth (71); A liquid spray port (4213) is provided at one end of the liquid spray pipe (4212) away from the branch pipe (4211). The width of the liquid spray port (4213) along the length direction of the filter cloth (71) is smaller than the inner diameter of the liquid spray pipe (4212). In a direction away from the branch pipe (4211), the width of the liquid spray port (4213) along the width direction of the filter cloth (71) gradually increases.

9. The filter cloth finishing assembly according to any one of claims 1 to 3, characterized in that: The water collecting and draining device (43) is also included. The water collecting and draining device (43) is arranged below and around the filter cloth (71) corresponding to the cleaning device (42), and includes a bottom wall and a surrounding wall. At least the upper end of the surrounding wall corresponding to the flushing back plate (422) extends to a position higher than the liquid spraying port (4213) of the flushing member (421). The end of the flushing back plate (422) is connected to the surrounding wall of the water collecting and draining device (43).

10. The filter cloth unloading and unloading reeling device is characterized by: A filter cloth finishing assembly comprising the filter cloth finishing assembly according to any one of claims 1 to 9.

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