Dehydrating equipment for laminated layers of material and multi-station combined method

Abstract

This invention provides a dewatering device and multi-station combination method for layered stacked material laying. The dewatering device includes: a frame, disposed on one side of a filter cylinder; a cloth-pushing and laying device, mounted on the frame, reciprocating horizontally above the filter cylinder to lay filter cloth layers inside the filter cylinder and spray material onto the filter cloth; and a filter cloth feeding, unloading, and winding device, including a rotatable rolling roller mounted on the frame and several guide rollers parallel to the rolling roller, wherein the filter cloth is wound into rolls on the rolling roller, and the filter cloth sequentially passes around each guide roller, extending from above the cloth-pushing and laying device to the front side of the cloth-pushing and laying device along the feeding direction. Through the above configuration, the layout of the layered stacked material dewatering device is compact, reducing the floor space required, while ensuring the accuracy of positioning between the filter cloth feeding, unloading, and winding device and the cloth-pushing and laying device.

Description

Technical Field

[0001] This invention belongs to the field of sludge treatment technology, specifically relating to a dewatering device for layered stacked material, and also to a multi-station combination method for the dewatering device for layered stacked material. Background Technology

[0002] With the continuous increase in urban sewage generation, the number of corresponding sewage treatment facilities is also increasing, leading to a growing amount of sludge, a byproduct of sewage treatment. How to properly handle and dispose of this ever-increasing volume of sludge has become an urgent environmental protection issue in my country. Sludge typically has a moisture content of over 80%. Sludge dewatering is a crucial step in its treatment process. However, the difficulty in deep dewatering sludge has become a bottleneck restricting its harmless and resource-based treatment.

[0003] There are various methods for solid-liquid separation, including pressing, extrusion, and centrifugation, and the corresponding equipment for solid-liquid separation is also diverse. Among them, the stacked extrusion device is widely used due to its advantages of high extrusion pressure, high extrusion limit, and long extrusion time, resulting in good dewatering effect. The filter cloth in the stacked extrusion device is generally an ultra-long continuous filter cloth. During operation, multiple layers of filter cloth need to be stacked and spread, and sludge is evenly spread between the filter cloths. For example, Chinese utility model patent application number CN202023099235.0 discloses a fixing device for laying stacked filter cloth, which lays sludge on the filter cloth at the same time as laying the filter cloth. Specifically, the near end of the filter cloth is first pressed tightly, and the discharge port of the sludge spreading mechanism pushes the filter cloth forward. During the feeding process of the sludge spreading mechanism, the discharge port of the sludge spreading mechanism evenly spreads the sludge on the filter cloth.

[0004] After the water-containing material is dewatered by pressure filtration, the dewatered material needs to be unloaded from the filter cloth. Then, the filter cloth is tidied and cleaned before being wound up on a roll roller. For example, Chinese invention patent application number CN202210362468.X discloses a filter cloth unloading and unloading / winding device and a material feeding and unloading system. The filter cloth unloading and unloading / winding device includes a material unloading functional unit, a filter cloth tidiness functional unit, and a filter cloth winding / unwinding functional unit connected in sequence. The material unloading functional unit unloads the dewatered material from the filter cloth, the filter cloth tidiness functional unit flattens and cleans the filter cloth after unloading the material, and the filter cloth winding / unwinding functional unit winds up the filter cloth and unloads it.

[0005] However, the existing stacking extrusion device has filter cloth feeding and unloading / rewinding equipment and sludge spreading mechanism set up separately along the direction close to the filter cylinder, which makes the stacking extrusion device occupy a large space. Moreover, during the assembly of the stacking extrusion device, it is not easy to ensure the accuracy of the positioning between the filter cloth feeding and unloading / rewinding equipment and the sludge spreading mechanism, which can easily affect the subsequent laying effect of materials.

[0006] Therefore, designing a dewatering device that can reduce the overall footprint of the equipment and ensure the laying effect of materials by layering and stacking has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] One objective of this invention is to provide a dewatering device for interlayer stacked materials, which solves the problems in the prior art where the separate installation of the material pushing device and the filter cloth unloading and rewinding device results in a large overall footprint and poor positioning accuracy between them.

[0008] Another objective of this invention is to solve the problem of poor spreading effect of filter cloth and sludge caused by the adhesion between sludge and filter cloth and the spreading device when the existing cloth spreading device spreads filter cloth and sludge simultaneously.

[0009] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0010] A dewatering device for layered stacked material laying includes: a frame, set on one side of a filter cylinder; a cloth-pushing and laying device, installed on the frame, which reciprocates horizontally above the filter cylinder to lay filter cloth in layers inside the filter cylinder and spray material onto the filter cloth; and a filter cloth feeding, unloading, and winding device, including a rotatable cloth-rolling roller installed on the frame and several guide rollers parallel to the cloth-rolling roller, wherein the filter cloth is wound into rolls on the cloth-rolling roller, and the filter cloth sequentially passes around each guide roller, extending from above the cloth-pushing and laying device to the front side of the cloth-pushing and laying device along the feeding direction.

[0011] Furthermore, the guide rollers include a first guide roller located near the roll roller, an end guide roller located near the filter cylinder, and an intermediate guide roller located between the first and end guide rollers. According to the direction of the filter cloth's travel during cloth feeding, the filter cloth is sequentially wound around the first guide roller, the intermediate guide roller, and the end guide roller. The end guide roller is located close to the top of the filter cylinder on the side near the frame, and the vertical distance between the end guide roller and the top of the filter cylinder is greater than the vertical distance between the top of the cloth feeding device and the top of the filter cylinder.

[0012] Furthermore, the intermediate guide roller is positioned above the fabric spreading device and comprises two layers arranged vertically. Depending on the direction of the filter cloth's movement during fabric spreading, the filter cloth is sequentially wound around the lower and upper intermediate guide rollers. Washers are installed on both sides of the filter cloth between the lower and upper intermediate guide rollers. Depending on the direction of the filter cloth's movement during fabric spreading, the filter cloth between the lower and upper intermediate guide rollers is inclined upwards. The washers include a rinsing backplate positioned below the filter cloth and a rinsing component positioned above the filter cloth, with the rinsing backplate forming an angle with the corresponding filter cloth. A water collector / drainage device for collecting the washing liquid sprayed from the rinsing component is positioned above the fabric spreading device.

[0013] Furthermore, the lower and upper intermediate guide rollers each comprise multiple rollers spaced apart along the feeding direction of the fabric spreading device; in the horizontal direction, the distance between the upper intermediate guide roller, which is furthest from the filter cylinder, and the filter cylinder is greater than the distance between the lower intermediate guide roller, which is furthest from the filter cylinder. Preferably, at least one upper intermediate guide roller has a spreading spiral on its outer peripheral wall, extending from the middle of the intermediate guide roller to both ends, and the spreading spirals extending to both ends of the intermediate guide roller have opposite directions of rotation; the intermediate guide roller with the spreading spiral is a drive roller.

[0014] Furthermore, a discharge collection hopper for collecting dewatered material is provided between the cloth spreading device and the filter cylinder; the end guide roller is positioned directly above the discharge collection hopper, and a scraper is provided at the end guide roller; and / or, the intermediate guide roller adjacent to the end guide roller is positioned directly above the discharge collection hopper, and a scraper is provided at the intermediate guide roller adjacent to the end guide roller; the horizontal distance between the intermediate guide roller adjacent to the end guide roller and the filter cylinder is greater than the horizontal distance between the end guide roller and the filter cylinder, and the scraper corresponds to the lower side of the filter cloth.

[0015] Preferably, the frame is provided with a channel for the dewatered material to fall, and the cloth pushing and spreading device disengages from the channel when it resets.

[0016] Furthermore, the cloth spreading device has a double-layer structure, including a spreading body for spreading cloth and spraying material, and a base for supporting the spreading body. The base is slidably mounted on the frame via a first guide component, and the spreading body is slidably mounted on the base via a second guide component. When spreading material, the base is first driven to move, so that the spreading body supported by the base moves to the edge near the top of the filter cylinder. Then, the spreading body is driven to reciprocate above the filter cylinder, so that the filter cloth is layered and laid in the filter cylinder and the material is sprayed onto the filter cloth.

[0017] Furthermore, a pusher head is provided at the front end of the material spreading body along the feeding direction. The first end of the pusher head is connected to the material spreading body through a rotating shaft. During the pushing process, the second end of the pusher head, which is opposite to the first end, is lower than the material spreading opening at the bottom of the material spreading body. Moreover, the height difference between the second end of the pusher head and the material spreading opening is greater than the thickness of the material being spread.

[0018] Furthermore, the material spreading body includes a shell and a material spreading pipe disposed within the shell, with a fabric pushing head disposed on the shell; an opening is provided at the bottom of the shell, the material spreading pipe extends along the feeding direction of the material spreading body, the material spreading port of the material spreading pipe bends downward from the opening, and the lower end of the material spreading port extends to below the opening; a hopper for holding materials is connected to the material spreading pipe of the material spreading body via a flexible hose.

[0019] Furthermore, an extrusion device is provided on the side of the frame facing the feeding direction of the fabric spreading device. The extrusion device includes a hydraulic device and an extrusion plate. The hydraulic device drives the extrusion plate to extrude downward from the top opening of the filter cylinder. The filter cylinder is located directly below the extrusion plate. Alternatively, the frame and the extrusion device are spaced apart. A first working position is located directly below the extrusion plate, and a second working position is located between the frame and the extrusion device. A device for supporting and moving the filter cylinder is provided between the frame and the extrusion device. The device for supporting and moving the filter cylinder drives the filter cylinder to reciprocate between the first working position and the second working position.

[0020] The present invention also relates to a dewatering device for the layered stacked material: a plurality of filter cylinders and frames are arranged around an extrusion device, with each frame corresponding to a filter cylinder; each frame is arranged opposite to a different side of the extrusion device; a first working position is provided directly below the extrusion plate of the extrusion device, and a second working position is respectively arranged between each frame and a different side of the extrusion device; a device for carrying and moving the filter cylinders drives the filter cylinders to reciprocate between the first and second working positions; preferably, two sets of filter cylinders and frames are arranged in a straight line or L-shape with the extrusion device; or, three sets of filter cylinders and frames are arranged in a T-shape with the extrusion device; or, four sets of filter cylinders and frames are arranged in two intersecting straight lines with the extrusion device.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0022] 1. This invention sets the filter cloth feeding and unloading winding device and the cloth pushing and spreading device on a single frame, and sets the filter cloth to extend to the front of the cloth pushing and spreading device along the feeding direction via a guide roller located above the cloth pushing and spreading device. This allows for a compact layout of the filter cloth feeding and unloading winding device and the cloth pushing and spreading device, reducing the floor space occupied by the dewatering equipment with layered and stacked material. At the same time, by using a bracket to limit the filter cloth feeding and unloading winding device and the cloth pushing and spreading device, the accuracy of their positioning can be ensured, thereby guaranteeing the laying effect of the material.

[0023] 2. By setting the rinsing back plate and the filter cloth at an angle, the filter cloth can deform slightly under the impact of the washing liquid during cleaning and then adhere to the rinsing back plate, ensuring the cleaning effect of the filter cloth. Moreover, it can prevent large-area contact between the filter cloth and the rinsing back plate when the filter cloth is laid out, thereby reducing the friction between the filter cloth and the rinsing back plate, and thus reducing the tensile force along the length of the filter cloth during the laying process. This reduces the deformation of the filter cloth, ensuring that the filter cloth has sufficient width when carrying materials and ensuring the wrapping effect of the filter cloth on the materials.

[0024] 3. By setting a pusher head at the front end of the material spreading body and setting the second end of the pusher head lower than the spreading opening during the pushing process, the present invention can leave space for material to be laid between the filter cloth below the material spreading body and the spreading opening, which can prevent the material from sticking to the material spreading body and improve the spreading effect of the material. Thus, the material can be evenly spread between two adjacent filter cloths, which is beneficial to improving the dehydration effect of the material.

[0025] 4. This invention comprises multiple frames surrounding an extrusion device, each frame being positioned opposite to a different side of the extrusion device. A first working position is positioned directly below the extrusion plate of the extrusion device, and a second working position is positioned between each frame and a different side of the extrusion device. The multiple second working positions share a first working position, allowing the filter cylinders that cooperate with different frames to reciprocate between their respective second working positions and the first working position of the extrusion device, repeatedly alternating between material laying, extrusion, material unloading, and filter cloth cleaning. This not only improves the dewatering efficiency of the material to be treated but also reduces equipment costs. Attached Figure Description

[0026] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0027] Figure 1 This is a schematic diagram of the dewatering equipment for the interlayer stacked material in an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of the dewatering device for the interlayer stacked material in an embodiment of the present invention;

[0029] Figure 3 This is an embodiment of the present invention. Figure 2 Enlarged view of point B in the middle;

[0030] Figure 4 This is an embodiment of the present invention. Figure 2 Enlarged view of point C in the middle;

[0031] Figure 5 This is a schematic diagram of the connection between the fabric spreading device and the conveying pipe in an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the fabric spreading device in an embodiment of the present invention;

[0033] Figure 7 This is a top view of the material body in an embodiment of the present invention;

[0034] Figure 8 This is an embodiment of the present invention. Figure 7 Schematic diagram of the cross section at point AA;

[0035] Figure 9 This is an embodiment of the present invention. Figure 8 Enlarged view of point A in the middle;

[0036] Figure 10 This is a schematic diagram of the structure when the fabric pusher is in the first position in an embodiment of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure when the fabric pusher is in the second position in an embodiment of the present invention;

[0038] Figure 12 This is a schematic diagram of the structure of the material body in an embodiment of the present invention;

[0039] Figure 13 This is a schematic diagram of the material laying pipe in an embodiment of the present invention;

[0040] Figure 14 This is a schematic diagram of the structure of the first guiding component in an embodiment of the present invention;

[0041] Figure 15 This is a schematic diagram of the structure of the device used to support and move the filter cylinder in an embodiment of the present invention;

[0042] Figure 16 This is a schematic diagram of a structure in which two sets of filter cylinders and a frame cooperate with an extrusion device in an embodiment of the present invention;

[0043] Figure 17 This is another schematic diagram of the structure of two sets of filter cylinders and frame cooperating with an extrusion device in an embodiment of the present invention;

[0044] Figure 18 This is a schematic diagram of the structure of three sets of filter cylinders and frame cooperating with an extrusion device in an embodiment of the present invention;

[0045] Figure 19 This is a schematic diagram of the structure of four sets of filter cylinders and frame combined with an extrusion device in an embodiment of the present invention.

[0046] Description of main components in the diagram:

[0047] 1. Fabric spreading device; 11. Spreading body; 111. Shell; 112. Spreading pipe; 1121. Spreading port; 1122. Input section; 1123. Variable diameter section; 1124. Output section; 113. Fabric pushing head; 1131. First support plate; 1132. Second support plate; 1133. Reinforcing plate; 1134. Solid column; 1135. Notch; 12. Base; 121. Second drive unit; 13. Drive device; 14. Front drive device; 15. Conveying pipe; 16. Mounting joint; 17. First guide assembly; 171. First track; 1711. Groove; 1712. Limiting part; 172. Roller; 18. Second guide group Components; 181, Second track; 182, Slider; 183, First drive unit; 2, Filter cylinder; 3, Discharge collection hopper; 4, Frame; 41, Guide roller; 411, First guide roller; 412, Second guide roller; 41-1, First end guide roller; 41-2, End guide roller; 42, Washer; 421, Flushing component; 422, Flushing back plate; 43, Water collection and drainage device; 5, First pressing assembly; 6, Second pressing assembly; 7, Cloth roll roller; 71, Filter cloth; 8, Extrusion equipment; 9, Hopper; 10, Equipment for supporting and moving the filter cylinder; 10-1, Lifter; 10-2, Pressure bearing component; 10-3, Fixed guide rail; 10-4, Moving guide rail. Detailed Implementation

[0048] To make the objectives, 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 with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0049] like Figures 1 to 15 As shown in the embodiment of the present invention, a dewatering device for layered stacked material is introduced, including a cloth-pushing and laying device 1 and a filter cylinder 2. The cloth-pushing and laying device 1 lays the filter cloth 71 in the filter cylinder 2 and sprays the material to be treated onto the filter cloth 71. During the laying process, the filter cloth 71 is fixed by two sets of cloth-pressing assemblies.

[0050] In some specific embodiments, the cloth spreading device 1 is configured to fold the filter cloth 71 back and forth between the first side and the opposite second side of the filter cylinder 2 and spray the material to be treated onto the filter cloth 71.

[0051] In the direction of movement of the filter cloth 71, a first pressing cloth assembly 5 and a second pressing cloth assembly 6 are respectively provided on the first and second opposite sides of the top of the filter cylinder 2.

[0052] The dewatering equipment for layered stacked materials also includes a filter cloth unloading and unloading / rewinding device. The filter cloth unloading and unloading / rewinding device includes an unloading component for unloading the squeezed and dewatered dry material from the filter cloth 71, a filter cloth tidying component for leveling and cleaning the filter cloth 71 after removing the dry material, and a filter cloth unloading and rewinding component for winding up the filter cloth 71 and unloading the filter cloth.

[0053] The filter cloth winding and unwinding assembly includes a winding roller 7, on which the filter cloth 71 is wound into a roll. The winding roller 7, which houses the filter cloth 71, and the cloth pushing and spreading device 1 are located on the same side of the filter cylinder 2. The spreading opening of the cloth pushing and spreading device 1 is higher than the upper edge of the filter cylinder 2.

[0054] 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 laying device 1 is outside the filter cylinder 2, the first cloth-pressing assembly 5 presses the filter cloth 71 on the first side onto the filter cylinder 2; the cloth-pushing and laying device 1 pushes the filter cloth 71 towards 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 pulled out from the rolling roller 7; when it reaches the second side of the filter cylinder 2, the second cloth-pressing assembly 6 presses the filter cloth 71 on the second side onto the filter cylinder 2, and the cloth-pushing and laying device 1 returns to its original position.

[0055] During the retraction 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 operates again, pressing the filter cloth 71 on the first side onto the filter cylinder 2.

[0056] This process is repeated, and several layers of material to be treated, wrapped in filter cloth 71, are laid up and down inside the filter cylinder 2.

[0057] It also includes an extrusion device 8, which is located above the filter cylinder 2 and is used to extrude the material.

[0058] After extrusion, the cloth unloading process begins. The cloth unloading and unloading / rewinding device's winding roller 7 rotates under motor drive, moving the filter cloth 71 and retracting it. The extruded and dehydrated material, carried on the filter cloth 71, leaves the filter cylinder 2 and enters the cloth unloading and unloading / rewinding device. After being unloaded by the unloading assembly, the dehydrated material falls into the discharge collection hopper 3 below. The filter cloth 71 is then cleaned and flattened by the filter cloth finishing assembly and wound onto the winding roller 7.

[0059] The material to be processed is a solid-liquid mixture, such as a material containing water. There is no limit to the water content.

[0060] In this embodiment, the dewatering equipment for the interlayer stacked material is preferably used for solid-liquid separation of sludge with high water content.

[0061] In this embodiment, to ensure the material is properly encapsulated, the width of the filter cloth 71 is greater than the width of the internal space of the filter cylinder 2, and the width of the material spreading opening of the cloth spreading device 1 is less than or equal to the width of the internal space of the filter cylinder 2. After the cloth spreading device 1 lays the material on the filter cloth 71, the movable bottom plate of the filter cylinder 2 moves down, and the filter cloth 71 carrying the material falls into the filter cylinder 2. The sides of the filter cloth 71 are bent upwards under the obstruction of the filter cylinder 2, wrapping the material from both sides to prevent the material from flowing out from both sides of the filter cloth 71.

[0062] In some preferred embodiments, there is a certain gap between the pressing position of the first pressing cloth assembly 5 and the internal space of the filter cylinder 2. Thus, when the movable bottom plate of the filter cylinder 2 moves down, the portion of the filter cloth 71 that exceeds the internal space of the filter cylinder 2 bends upward under the obstruction of the first side of the filter cylinder 2, so that the side of the material that is close to the pushing cloth spreading device 1 is also wrapped by the filter cloth 71.

[0063] Example 1

[0064] In existing technologies, the filter cloth feeding and unloading / rewinding device and the cloth pushing and laying device of the layered stacked material dewatering equipment are respectively arranged along the direction close to the filter cylinder. This causes the layered stacked material dewatering equipment to occupy a large space. Furthermore, during the assembly of the layered stacked material dewatering equipment, it is not easy to ensure the accuracy of the positioning between the filter cloth feeding and unloading / rewinding device and the cloth pushing and laying device, which can easily affect the subsequent material laying effect. Figures 1 to 4 As shown in this embodiment, a dewatering device for interlayer stacked materials is introduced to solve the above-mentioned technical problems.

[0065] In this embodiment, the dewatering equipment for layered stacked material includes a frame 4, on which a filter cloth feeding and unloading / rewinding device and a cloth pushing and laying device 1 are installed. A bracket supports the filter cloth feeding and unloading / rewinding device and the cloth pushing and laying device 1, which can ensure the accuracy of positioning between the two, thereby ensuring the laying effect of the material.

[0066] In this embodiment, the filter cloth feeding, unloading, and winding device includes an unloading assembly, a filter cloth sorting assembly, and a filter cloth unloading and winding assembly. The winding roller 7 of the filter cloth unloading and winding assembly is mounted on the frame 4, and the filter cloth 71 is wound into a roll on the winding roller 7. The filter cloth sorting assembly includes multiple guide rollers 41 disposed between the winding roller 7 and the filter cylinder 2. The guide rollers 41 and the winding roller 7 are rotatably mounted on the frame. The guide rollers 41 are parallel to the winding roller 7 and are axially aligned with the winding roller 7. The filter cloth 71 passes around each guide roller 41 in sequence, extending from above the pusher cloth laying device 1 to the front side of the pusher cloth laying device 1 along the feeding direction. The first pressing assembly 5 presses the filter cloth 71 tightly onto the filter cylinder 2. That is, the filter cloth feeding and unloading and winding device is located above the cloth pushing and spreading device 1, which makes the layout of the filter cloth feeding and unloading and winding device and the cloth pushing and spreading device 1 compact, thereby reducing the floor space occupied by the dewatering equipment with layered and stacked materials.

[0067] In this embodiment, the phrase "filter cloth 71 is wrapped around guide roller 41" and "filter cloth 71 passes around guide roller 41" specifically means that the filter cloth 71 partially contacts the outer peripheral wall of guide roller 41 and is guided by guide roller 41, rather than being wrapped around guide roller 41.

[0068] In some specific embodiments, the fabric spreading device 1 reciprocates horizontally above the filter cylinder 2, layering and laying the filter cloth 71 inside the filter cylinder 2 and spraying material onto the filter cloth 71. The fabric rolling roller 7 is mounted on the frame behind the fabric spreading device 1 along the feed direction, and the filter cylinder 2 is mounted on the side of the frame 4 away from the fabric rolling roller 7, that is, on the side of the frame 4 facing the feed direction of the fabric spreading device 1.

[0069] The guide roller 41 includes a first guide roller 41-1 located near the roll roller 7, a last guide roller 41-2 located near the filter cylinder 2, and an intermediate guide roller located between the first guide roller 41-1 and the last guide roller 41-2. According to the direction of travel of the filter cloth 71 during cloth feeding, the filter cloth 71 is sequentially wrapped around the first guide roller 41-1, the intermediate guide roller and the last guide roller 41-2, extending to the front side of the cloth pushing and laying device 1 along the feeding direction.

[0070] In some preferred embodiments, the intermediate guide roller is disposed above the fabric spreading device 1 and includes two layers arranged in a vertical direction. Depending on the direction of travel of the filter cloth 71 during fabric spreading, the filter cloth 71 is sequentially wrapped around the lower intermediate guide roller and the upper intermediate guide roller.

[0071] In some preferred embodiments, the first guide roller 41-1 is disposed on the rear side and below the fabric pushing and spreading device 1, the first guide roller 41-1 is disposed on the side of the roll roller 7 close to the fabric pushing and spreading device 1, and the first guide roller 41-1 is spaced apart from the roll roller 7 in the horizontal direction.

[0072] In some possible embodiments, the intermediate guide roller of the lower layer closest to the roll-up roller 7 in the horizontal direction is positioned above the first guide roller 41-1. The filter cloth 71 passes around the first guide roller 41-1 and passes over the upper side of the intermediate guide roller of the lower layer closest to the roll-up roller 7. The filter cloth 71 between the intermediate guide roller of the lower layer closest to the roll-up roller 7 and the first guide roller 41-1 extends in the vertical direction. The positioner of the filter cloth take-up and unwinding assembly corresponds to the filter cloth 71 at this location.

[0073] In some possible embodiments, the cleaner 42 of the filter cloth finishing assembly is disposed between the lower intermediate guide roller and the upper intermediate guide roller.

[0074] In this embodiment, the lower intermediate guide roller and the upper intermediate guide roller are offset in the horizontal direction. When the filter cloth 71 is wound from the lower intermediate guide roller to the upper intermediate guide roller, it extends upward at an angle. The cleaner 42 corresponds to the angled filter cloth 71. The cleaner 42 includes a rinsing back plate 422 disposed on the lower side of the filter cloth 71 and a rinsing member 421 disposed on the upper side of the filter cloth 71.

[0075] like Figure 4 As shown, in some preferred embodiments, the rinsing back plate 422 is configured as a flat plate. Along the length and / or width direction of the filter cloth 71, the rinsing back plate 422 extends obliquely relative to the filter cloth 71. The angle between the rinsing 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 angle between the rinsing 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°. This ensures that when the filter cloth 71 is laid out, large-area contact between the filter cloth 71 and the rinsing back plate 422 is avoided. This reduces the frictional force between the filter cloth 71 and the rinsing back plate 422, thereby reducing the tensile force along the length direction experienced by the filter cloth 71 during laying out. It also reduces the deformation of the filter cloth 71 to ensure sufficient width when carrying materials, thus ensuring the effective wrapping of materials by the filter cloth 71.

[0076] In some preferred embodiments, a gap is provided between the rinsing back plate 422 and the filter cloth 71, the gap being greater than or equal to 10 mm and less than or equal to 15 mm. This prevents excessive deformation of the filter cloth 71 during rinsing, further reduces, or even eliminates, the resistance exerted by the rinsing back plate 422 on the filter cloth 71 during the cloth laying process.

[0077] In some preferred embodiments, the lower intermediate guide roller and the upper intermediate guide roller each include a plurality of rollers arranged at intervals along the feeding direction of the fabric spreading device 1. In the horizontal direction, the distance between the upper intermediate guide roller, which is the furthest from the filter cylinder 2, and the filter cylinder 2 is greater than the distance between the lower intermediate guide roller, which is the furthest from the filter cylinder 2, and the filter cylinder 2.

[0078] In this embodiment, in the horizontal direction, the lower layer intermediate guide roller with the smallest distance from the filter cylinder 2 is the first guide roller 411, and the upper layer intermediate guide roller with the largest distance from the filter cylinder 2 is the second guide roller 412. According to the direction of travel of the filter cloth 71 during winding, the filter cloth 71 is sequentially wound around the second guide roller 412 and the first guide roller 411. At this time, the surface of the filter cloth 71 used for wrapping material is flipped to the upper side; that is, when the filter cloth 71 is located between the first guide roller 411 and the second guide roller 412, the upper surface of the filter cloth 71 is the surface used for wrapping material. In this embodiment, by directly rinsing the surface of the filter cloth 71 used for wrapping material, the cleaning effect of the cleaner 42 on the filter cloth 71 can be improved.

[0079] The filter cloth feeding, unloading, and winding device also includes a water collection and drainage device 43. The water collection and drainage device 43 is disposed below and around the filter cloth 71 corresponding to the washer 42, and includes a bottom wall and a surrounding wall. At least the upper end of the surrounding wall corresponding to the rinsing back plate 422 extends to a point above the spray nozzle of the rinsing member 421. A drain outlet is provided at the bottom of the water collection and drainage device 43, which is used to collect the washing liquid sprayed from the rinsing member 421 and discharge it from the drain outlet.

[0080] In this embodiment, a water collection and drainage device 43 for collecting the washing liquid sprayed from the rinsing component 421 is located above the fabric spreading device 1. Specifically, as shown... Figure 1 and Figure 2 As shown, the two ends of the enclosure of the water collection and drainage device 43, which are arranged along the feeding direction of the fabric spreading device 1, extend to the side of the first guide roller 411 away from the second guide roller 412 and the side of the second guide roller 412 away from the first guide roller 411, respectively. That is, the projections of the first guide roller 411 and the second guide roller 412 in the horizontal direction both fall into the water collection and drainage device 43.

[0081] In some specific embodiments, the lower intermediate guide roller and the upper intermediate guide roller are respectively provided with three of them arranged at intervals along the feeding direction of the fabric spreading device 1, and the top of the wall of the water collector 43 away from the filter cylinder 2 is provided with a notch. In the horizontal direction, the lower intermediate guide roller and the first guide roller 411 located in the middle position are arranged in the water collector 43. The filter cloth 71 extends from the notch into the water collector 43, and is wrapped around the upper side of the lower intermediate guide roller and the lower side of the first guide roller 411 in sequence. Then the filter cloth 71 extends upward and inclined towards the side away from the filter cylinder 2, and is wrapped around the second guide roller 412 from the lower side of the second guide roller 412.

[0082] In some preferred embodiments, in the vertical direction, the second guide roller 412 is aligned with the lower intermediate guide roller located in the middle position, and the upper intermediate guide roller located in the middle position is aligned with the first guide roller 411. The lower intermediate guide roller away from the first guide roller 411 is disposed on the side of the water collector 43 away from the filter cylinder 2, and the lower intermediate guide roller away from the second guide roller 412 is disposed on the side of the water collector 43 close to the filter cylinder 2.

[0083] Preferably, the washer 42 is positioned close to the first guide roller 411.

[0084] In this embodiment, at least one upper intermediate guide roller has a spreading spiral on its outer peripheral wall. The spreading spiral extends from the middle of the intermediate guide roller to both ends, and the spreading spirals extending to both ends of the intermediate guide roller have opposite directions of rotation. The intermediate guide roller with the spreading spiral is a drive roller. That is, the intermediate guide roller with the spreading spiral is connected to a motor drive.

[0085] Preferably, at least the upper intermediate guide roller, which is furrowed the furrow ...

[0086] Preferably, a spreading spiral is provided on the second guide roller 412 and on the upper intermediate guide roller located in the middle position.

[0087] like Figures 1 to 3As shown, in this embodiment, the end guide roller 41-2 is positioned close to the top of the filter cylinder 2 on the side near the frame 4, and the vertical distance between the end guide roller 41-2 and the top of the filter cylinder 2 is greater than the vertical distance between the top of the fabric spreading device 1 and the top of the filter cylinder 2. After the filter cloth 71 passes under the end guide roller 41-2, it is pressed onto the filter cylinder 2 by the first pressing assembly 5. Through the above arrangement, the vertical distance between the filter cloth 71 above the material and the first side of the filter cylinder 2 is reduced, which can reduce the lifting height of the first pressing assembly 5 during the pressing process and reduce the stroke of the first pressing assembly 5, thereby improving the material laying efficiency.

[0088] In this embodiment, a discharge collection hopper 3 for collecting dehydrated materials is provided between the cloth spreading device 1 and the filter cylinder 2, and the unloading component corresponds to the filter cloth 71 directly above the discharge collection hopper 3.

[0089] In some specific embodiments, the end guide roller 41-2 is positioned directly above the discharge collection hopper 3, and a scraper is provided at the end guide roller 41-2. Alternatively, an intermediate guide roller adjacent to the end guide roller 41-2 is positioned directly above the discharge collection hopper 3, and a scraper is provided at the intermediate guide roller adjacent to the end guide roller 41-2. The horizontal distance between the intermediate guide roller adjacent to the end guide roller 41-2 and the filter cylinder 2 is greater than the horizontal distance between the end guide roller 41-2 and the filter cylinder 2. The scraper corresponds to the lower side of the filter cloth 71, that is, to the side of the filter cloth 71 that directly contacts the material.

[0090] Preferably, the frame 4 is provided with a channel for the dewatered material to fall, and the cloth pushing and spreading device 1 disengages from the channel when it resets.

[0091] In some specific embodiments, when the fabric spreading device 1 is reset, a shielding structure is provided above the front end of the fabric spreading device 1 along the feeding direction. The shielding structure protrudes towards the side near the filter cylinder 2 to shield the front end of the fabric spreading device 1 along the feeding direction, preventing material from adhering to the fabric spreading device 1. The side of the shielding structure near the filter cylinder 2 forms a sidewall for the channel through which the dewatered material falls. Preferably, the side of the shielding structure near the filter cylinder 2 is provided as a downwardly sloping surface to prevent material from remaining on the shielding structure.

[0092] In this embodiment, the extrusion device 8 is located on the side of the frame 4 facing the feeding direction of the fabric spreading device 1. The extrusion device 8 includes a hydraulic device and an extrusion plate. The hydraulic device drives the extrusion plate to extrude downward from the top opening of the filter cylinder 2.

[0093] In some possible embodiments, each set of filter cloth feeding and unloading / rewinding devices and cloth pushing and spreading devices 1 corresponds to a set of extrusion equipment 8. That is, the filter cylinder 2 is located directly below the extrusion plate, and the filter cylinder 2 does not need to move during the process of laying and dewatering the material.

[0094] like Figures 15 to 19 As shown, in some other possible embodiments, the frame 4 and the extrusion device 8 are spaced apart. A device 10 for supporting and moving the filter cylinder is provided between the frame 4 and the extrusion device 8. The device 10 for supporting and moving the filter cylinder includes a moving guide rail 10-4 and a fixed guide rail 10-3. A first working position is arranged directly below the extrusion platen, and a second working position is arranged between the frame 4 and the extrusion device 8. The device 10 for supporting and moving the filter cylinder drives the filter cylinder 2 to reciprocate between the first and second working positions.

[0095] In some specific embodiments, fixed guide rails 10-3 are located at the second working position. A lifter 10-1 for supporting the movable bottom plate of the filter cylinder 2 is positioned between the two fixed guide rails 10-3. The lifter 10-1 extends upwards and can enter the cylinder body of the filter cylinder 2 through the lower opening at the bottom of the cylinder 2, supporting the movable bottom plate within the cylinder body. As the lifter 10-1 extends or retracts, it can lift the movable bottom plate to move upwards or downwards. When the lifter 10-1 is in its fully retracted state, its upper end is lower than the upper end of the fixed guide rails 10-3. Two movable guide rails 10-4 and a pressure-bearing member 10-2 are located at the first working position. Each pair of movable guide rails 10-4 is arranged parallel to each other, and each movable guide rail 10-4 is connected to one of the two fixed guide rails 10-3 and is on the same straight line. The pressure-bearing member 10-2 is located between the two movable guide rails 10-4. The upper end of the pressure-bearing component 10-2 is a flat plate structure. When the filter cylinder 2 is located on the fixed guide rail 10-3, the upper end of the pressure-bearing component 10-2 is lower than the bottom end of the filter cylinder 2. The movable guide rail 10-4 can move up and down. When the movable guide rail 10-4 moves upward to its limit position, its upper end is flush with the upper end of the fixed guide rail 10-3, which is used to move the cylinder body from the second working position to the first working position, or from the first working position to the second working position. When the movable guide rail 10-4 descends to its lowest position, its upper end is lower than the upper end of the pressure-bearing component 10-2, at which point the pressure-bearing component 10-2 is used to support the cylinder body.

[0096] This invention also discloses a multi-station combination method for a dewatering device using layered stacked material. Specifically, multiple filter cylinders 2 and frames 4 are arranged around the extrusion device 8. Each frame 4 is equipped with a filter cloth feeding and unloading / winding device and a cloth pushing and spreading device 1, with each frame 4 corresponding to a filter cylinder 2. A first working position is located directly below the extrusion plate of one extrusion device 8, and a second working position is respectively arranged between each frame 4 and a different side of one extrusion device 8. A device 10 for supporting and moving the filter cylinders drives the filter cylinders 2 to reciprocate between the first and second working positions.

[0097] Preferred, such as Figure 16 and Figure 17 As shown, the filter cylinder 2 and frame 4 are arranged in two sets, in a straight line or L-shape with an extrusion device 8. Alternatively, as... Figure 18 As shown, the filter cylinder 2 and frame 4 are arranged in three sets, forming a T-shape with an extrusion device 8. Alternatively, as... Figure 19 As shown, four sets of filter cylinders 2 and frames 4 are arranged in two intersecting straight lines with an extrusion device 8. The frames are positioned opposite the sides of the filter cylinders. When the filter cylinder is in the first working position, each frame is located on the extension line of the centerline of the filter cylinder's cross-section. Preferably, the four sets of filter cylinders 2 and frames 4 are arranged in two mutually perpendicular straight lines with an extrusion device 8. In the above scheme, multiple frames are arranged around an extrusion device, each frame being positioned opposite to a different side of the extrusion device. A first working position is set directly below the extrusion plate of the extrusion device, and a second working position is set between different frames and different sides of the extrusion device. Multiple second working positions share a first working position, allowing the filter cylinders that cooperate with different frames to reciprocate between their respective second working positions and the first working position of the extrusion device, repeatedly alternating between material laying, extrusion, material unloading, and filter cloth cleaning. This improves the dewatering efficiency of the material to be treated and reduces equipment costs.

[0098] Example 2

[0099] Based on Embodiment 1, this embodiment of the invention further describes the specific structure of a cloth-pushing and spreading device 1 for a dehydration equipment for water-containing materials.

[0100] like Figures 7 to 9As shown, the fabric spreading device 1 includes a spreading body 11, with a spreading opening 1121 at the bottom. The front end of the spreading body 11 has a downwardly extending spreading head 113. The first end of the spreading head 113 is connected to the spreading body 11, and the second end of the spreading head 113, opposite to the first end, is below the spreading opening 1121 at least when it contacts the filter cloth 71. In the above scheme, the front end of the spreading body 11 is specifically the end facing the filter cylinder 2, that is, the end that contacts the filter cloth 71 during the feeding process. During the feeding process, the spreading head 113 at the front end of the spreading body 11 presses against the filter cloth 71, causing the filter cloth 71 to be pulled out from the winding roller 7.

[0101] like Figure 2 and Figure 3 As shown, the pusher head 113 at the front end of the spreading body 11 presses against the filter cloth 71, causing the filter cloth 71 to be pulled out from the winding roller 7. During this process, the filter cloth covers the front end of the spreading body 11, and slides along the front end of the spreading body 11 as the spreading body 11 moves forward. By setting the downwardly extending pusher head 113 at the front end of the spreading body 11, and setting the spreading opening 1121 at the bottom of the spreading body 11 behind the pusher head 113, and setting the second end of the pusher head 113 to be lower than the spreading opening 1121 when the pusher head 113 abuts against the filter cloth 71, the pusher head 113 pulls the filter cloth 71 out from the winding roller 7 during the feeding and spreading process of the spreading body 11. The reaction force stretches the filter cloth 71 below the spreading body 11, and at the same time lays the material on the surface. On the filter cloth 71 below the main body 11, on the one hand, the laying effect of the filter cloth 71 can be guaranteed, and on the other hand, the height difference between the second end of the pusher head 113 and the laying opening 1121 can leave space for material to be laid between the filter cloth 71 below the main body 11 and the laying opening 1121, which can prevent the material from sticking to the main body 11 and improve the spreading effect of sludge. Thus, the material can be evenly spread between two adjacent layers of filter cloth 71, which is conducive to improving the dewatering effect of the material.

[0102] Preferably, at least when the pusher head 113 abuts against the filter cloth 71, the height difference between the second end of the pusher head 113 and the material spreading opening 1121 is greater than the thickness of the material spread on the filter cloth. This further prevents the material from sticking to the material spreading body 11.

[0103] In some specific embodiments, the pusher head 113 extends downward at an angle from the front end of the spreading body 11. The thickness of the pusher head 113 gradually decreases in the direction perpendicular to the first end to the second end, from the first end to the second end. Specifically, the thickness of the pusher head 113 gradually decreases in the direction away from the spreading body 11. As the pusher head 113 of the spreading body 11 presses against the filter cloth 71 and feeds forward, pulling the filter cloth 71 off the winding roller 7, the filter cloth 71 slides smoothly along the pusher head 113, reducing the resistance of the pusher head 113 to the filter cloth 71. Simultaneously, it avoids excessive excess filter cloth 71 at the second side of the filter cylinder 2, ensuring that the filter cloth 71 above the material is flat after the spreading body 11 retracts.

[0104] Preferably, in this embodiment, the second end of the pusher head 113 is set to an arc shape. This further improves the smoothness of the filter cloth 71 sliding along the second end of the pusher head 113 and avoids damage to the filter cloth 71 by the pusher head 113 during the pushing process.

[0105] In some specific embodiments, the second end of the pusher head 113 is a solid column 1134 with a diameter smaller than the thickness of the front end of the fabric body 11. The solid column 1134 is connected to the fabric body 11 through a support plate that extends downward from the front end of the fabric body 11. The end of the support plate away from the solid column 1134 is the first end of the pusher head 113.

[0106] Specifically, the solid column 1134 is positioned in front of the fabric spreading body 11, spaced apart from it, and connected to the front end of the fabric spreading body 11 via a support plate. The solid column 1134 constitutes the second end of the fabric pushing head 113.

[0107] Preferably, the diameter of the solid column 1134 is smaller than the thickness of the front end of the fabric spreading body 11; the support plate includes two plates, which extend obliquely from the outer peripheral wall of the solid column 1134 toward the upper and lower edges of the front end of the fabric spreading body 11, respectively. The end of the support plate away from the solid body forms the first end of the fabric pushing head. One end of the support plate is integrally connected to the solid column 1134, and the other end is connected to the front end of the fabric spreading body 11. The end of the support plate and the outer peripheral wall of the solid column 1134 are smoothly connected, thereby forming a smooth surface at the second end of the fabric pushing head 113, avoiding scratching the filter cloth 71 during the fabric pushing process.

[0108] Preferably, the two support plates are tangent to the upper and lower sides of the solid column 1134, respectively.

[0109] Preferably, a reinforcing plate 1133 is provided between the two support plates to strengthen the structure of the pusher head 113.

[0110] like Figure 9As shown, in some specific embodiments, the extension length of the support plate connected to the solid column 1134 from below is less than the extension length of the support plate connected to the solid column 1134 from above. The reinforcing plate 1133 is disposed between the end of the support plate connected to the solid column 1134 from below away from the solid column 1134 and the middle of the support plate connected to the solid column 1134 from above.

[0111] In this embodiment, the pusher head 113 and the spreading body 11 can be integrated as one unit, or the pusher head 113 and the spreading body 11 can be rotatably coupled. Preferably, at least one end of the support plate connected to the solid column 1134 from above the solid column 1134 away from the solid column 1134 is smoothly connected to the spreading body 11.

[0112] In some possible embodiments, the pusher head 113 and the spreading body 11 are integrated. Specifically, the ends of the two support plates of the pusher head 113 that are away from the solid column 1134 are respectively connected to the upper and lower edges of the front end of the spreading body 11, and the second end of the pusher head 113 is lower than the spreading opening 1121.

[0113] In this embodiment, to prevent the pusher head 113 from scraping the material below the material spreading body 11, the material spreading body 11 can be raised when it retracts, or the entire pusher spreading device can be raised, or the movable bottom plate of the filter cylinder can be moved downwards so that the pusher head 113 avoids the material spread on the filter cloth.

[0114] In some preferred embodiments, the movable base plate initially moves to a position slightly below the top of the filter cylinder 2, and the gap between the movable base plate and the top of the filter cylinder 2 is greater than or equal to the thickness of the material laid on the filter cloth 71; when the front end of the pusher and material laying device 1 moves beyond the first side along the feeding direction, the movable base plate of the filter cylinder 2 moves downward by one stroke, which matches the sum of the thickness of the material laid on the filter cloth 71 and the thickness of the filter cloth 71. Specifically, the filter cylinder includes a cylinder body and a movable base plate located inside the cylinder body. The cylinder body has a hollow cubic structure with water outlet holes on all sides; the top of the cylinder body is open, the movable base plate matches the cross-section of the inner cavity of the cylinder body and can move up and down along the cylinder body, and the bottom of the cylinder body is open.

[0115] like Figure 10 and Figure 11As shown, in some other possible embodiments, the pusher head 113 is rotatably coupled to the spreading body 11. Thus, when the spreading body 11 advances, the pusher head 113 can be controlled to rotate downwards, so that the second end of the pusher head 113 is lower than the spreading opening 1121, creating a height difference between the pusher head 113 and the spreading opening 1121 greater than the thickness of the material spread on the filter cloth. When the spreading body 11 retracts, the pusher head 113 can be controlled to rotate upwards, so that the second end of the pusher head 113 is higher than the material on the filter cloth 71. This prevents the pusher head 113 from scraping against the material below the spreading body 11, avoids material sticking to the pusher head 113, improves the material spreading effect, and also helps to increase the retraction speed of the spreading body 11 and increase the spreading rate.

[0116] Preferably, the pusher head 113 includes a first position where it rotates upward to its upper limit and a second position where it rotates downward to its lower limit. When the pusher head 113 is in the first position and the second position, the height difference between the second end of the pusher head 113 is greater than the thickness of the material laid on the filter cloth. Preferably, an elastic element is provided between the pusher head 113 and the material laying body 11. The elastic element is used to drive the pusher head 113 to rotate to the first position. During the forward feeding process of the material laying body 11, the reaction force exerted by the filter cloth 71 on the pusher head 113 is greater than the elastic force of the elastic element. Driven by the reaction force of the filter cloth 71, the pusher head 113 rotates to the second position. Thus, the pusher head 113 can automatically switch between the first position and the second position and can match the pushing and laying action of the material laying body 11. Specifically, in this embodiment, when the pusher head 113 rotates to the first position, the height of the axis of the solid column 1134 is lower than the height of the rotation center of the pusher head 113, thereby ensuring that the pusher head 113 can smoothly rotate to the second position under the reaction force of the filter cloth 71.

[0117] like Figure 10 and Figure 11 As shown, in some specific embodiments, the rotation of the fabric pusher head 113 can be limited by the front end face of the fabric spreading body 11. Specifically, a rotating shaft can be positioned between the middle of the front end face of the fabric spreading body 11 and the fabric pusher head 113. A gap is provided between the fabric pusher head 113 and the fabric spreading body 11 for the fabric pusher head 113 to rotate. When the fabric pusher head 113 rotates to the first position, the upper end of the side of the fabric pusher head 113 closest to the fabric spreading body 11 abuts against the front end of the fabric spreading body 11. When the fabric pusher head 113 rotates to the second position, the lower end of the side of the fabric pusher head 113 closest to the fabric spreading body 11 abuts against the front end of the fabric spreading body 11. The elastic element used to drive the fabric pusher head 113 to rotate to the first position can be a torsion spring.

[0118] Preferably, the upper edge of the front end of the material spreading body 11 and / or the upper edge of the first end of the pusher head are provided with an arc-shaped chamfer to avoid scratching the filter cloth.

[0119] Preferably, the top of the working end of the first pressing assembly 5 is substantially flush with the bottom of the second end of the pushing head 113.

[0120] Specifically, when the working end of the first pressing cloth assembly 5 presses the filter cloth 71 on the first side of the filter cylinder 2 onto the filter cylinder 2, the top of the working end of the first pressing cloth assembly 5 is slightly lower than the bottom of the second end of the pushing cloth head 113, so that the pushing cloth head 113 can pass smoothly.

[0121] Preferably, the height difference between the bottom of the second end of the pusher head 113 and the top of the working end of the first pressing assembly 5 is greater than or equal to the thickness of the filter cloth 71.

[0122] Preferably, the material spreading opening 1121 is located at the bottom of the material spreading body 11 and near the front end of the material spreading body 11, that is, the material spreading opening 1121 is located near the cloth pushing head 113, so that the material can be spread all over the filter cloth 71 below, making the structure compact.

[0123] This embodiment also provides a dewatering device for layered stacked material. The dewatering device for layered stacked material includes a filter cylinder 2 and the aforementioned push-and-lay device 1 installed on one side of the top of the filter cylinder 2. The material-laying body 11 of the push-and-lay device 1 reciprocates above the filter cylinder 2, stacking and laying the filter cloth 71 in layers inside the filter cylinder 2 and spraying material onto the filter cloth 71.

[0124] During the feeding process, the material spreading body 11 sprays material onto the filter cloth 71, and during the retraction process, it stops spraying material onto the filter cloth 71. The retraction speed of the material spreading body 11 is greater than or equal to the feeding speed of the material spreading body 11.

[0125] The material spreading body 11 extends horizontally. The second end of the pusher head 113 has a notch in the middle, which is adapted to the shape of the working end of the second pressing assembly located on the side of the filter cylinder 2 away from the pusher spreading device, so that the working end of the second pressing assembly can pass through and press the filter cloth 71 covered on the second end of the pusher head 113 onto the filter cylinder 2.

[0126] In this embodiment, when the material spreading body reaches the second side of the filter cylinder 2, that is, when the pusher head 113 reaches the second side of the filter cylinder 2, the working end of the second pressing assembly 6 passes through the notch from top to bottom, pressing the bend of the filter cloth onto the filter cylinder. From the first end to the second end of the pusher head 113, the thickness of the pusher head 113 gradually decreases in the direction perpendicular to the first end to the second end, which facilitates the working end of the second pressing assembly 6 passing through the notch, pressing the filter cloth tightly, and improving the smoothness of pressing.

[0127] Example 3

[0128] like Figures 1 to 15As shown in the embodiments of the present invention, a fabric spreading device 1 for a dewatering device for interlayer stacked fabric as described in Embodiment 1 or Embodiment 2 is further introduced.

[0129] The fabric spreading device 1 of the dewatering equipment for layered stacked fabric is installed on the frame 4. The fabric spreading device 1 has a double-layer structure, including a base 12 and a spreading body 11 installed on the base 12. The base 12 is installed on the frame 4 through a first guide assembly 17, and the spreading body 11 is installed on the base 12 through a second guide assembly 18. One end of the drive device 13 is connected to the base 12, and the other end is connected to the spreading body 11. Therefore, before pushing and laying the fabric, the base 12 can be driven to carry the fabric laying body 11 to move along the first guide component 17 and approach the filter cylinder 2. During the pushing and laying process, the drive device 13 only needs to drive the fabric laying body 11 to reciprocate above the filter cylinder 2. The extension length of the drive device 13 is kept within a small range, which helps to ensure the smoothness of the reciprocating motion of the fabric laying body 11 and improves the efficiency and control accuracy of pushing and laying the fabric. At the same time, the use of a small-stroke drive device 13 can realize the driving of the fabric laying body 11, which helps to reduce the cost of the equipment.

[0130] The extension direction of the first guide component 17 is parallel to the extension direction of the second guide component 18. As the base 12 moves along the first guide component 17, the front end of the pusher body of the pusher device 1 approaches and remains aligned with the first side of the filter cylinder 2. Alternatively, the extension directions of the first guide component 17 and the second guide component 18 are set at an angle. As the base 12 moves along the first guide component 17, the front end of the pusher body of the pusher device 1 approaches and gradually aligns with the first side of the filter cylinder 2.

[0131] Specifically, the second guide component 18 is a sliding guide rail structure, which is disposed on one or both sides of the material spreading body 11 in the feeding direction. The second guide component 18 includes a second track 181 and a slider 182 sleeved on the second track 181.

[0132] Preferably, in this embodiment, two sets of sliding guide rail structures are provided, respectively disposed between the left and right sides of the material laying body 11 and the top of the base 12. Specifically, the sliding guide rail structure includes a second track 181 and a slider 182 mounted on the second track 181 and sliding back and forth along the second track 181. The second track 181 is disposed on the base 12, and the slider 182 is disposed on the material laying body 11.

[0133] Specifically, such as Figure 5 and Figure 6As shown, in this embodiment, the extension length of the base 12 along the feed direction perpendicular to the material spreading body 11 is greater than the extension length of the material spreading body 11 along the feed direction perpendicular to the material spreading body 11. A first track 171 is installed on the top of the base 12, and two first tracks 171 are respectively arranged on both sides of the material spreading body 11. Outwardly extending sliders 182 are respectively provided on both sides of the material spreading body 11, and the sliders 182 are respectively fitted onto the corresponding first tracks 171. Through the above arrangement, a high degree of parallelism can be maintained between the material spreading body 11 and the base 12 at all times, preventing the front end of the material spreading body 11 from tilting downwards during the forward feeding process.

[0134] In this embodiment, the feeding direction of the material laying body 11 is the extending direction of the second guide component 18.

[0135] Preferably, in this embodiment, the material spreading body 11 extends horizontally, and the top surface of the base 12 is set as a horizontal plane, with the top surfaces of the material spreading body 11 and the base 12 close to each other. This improves the structural compactness of the material spreading device 1. Arranging the sliding guide rail structure between the left and right sides of the material spreading body 11 and the base 12 facilitates the fit between the material spreading body 11 and the base 12.

[0136] Preferably, the fixed end of the drive device 13 is disposed on the base 12, and the movable end is connected to the slider 182.

[0137] In some specific embodiments, the housing 111 of the material spreading body 11 is configured as a cuboid structure, the slider 182 extends outward from the left and right side walls of the housing 111, the second track 181 is configured as a column, and the slider 182 is provided with through holes adapted to the second track 181. The slider 182 is sleeved on the second track 181 through the through holes. The driving device 13 is provided with two sets parallel to the extension direction of the sliding guide rail structure. The two sets of driving devices 13 operate synchronously. The fixed end of the driving device 13 is set on the base 12, and the movable ends of the two driving devices 13 are respectively connected to the two sliders 182.

[0138] Preferably, the fixed end of the drive device 13 is disposed on the base 12 behind the slider 182, and the movable end of the drive device 13 is connected to the slider 182. Preferably, the end of the slider 182 away from the fixed end of the drive device 13, that is, the front end of the slider 182, is provided with a first drive part 183 protruding and extending away from the material spreading body 11, and the movable end of the drive device 13 is connected to the first drive part 183.

[0139] The drive unit 13 can be any one or a combination of two or more of the following: hydraulic cylinder, pneumatic cylinder, and linear motor.

[0140] In some specific embodiments, the first guide component 17 is a rolling guide rail structure, which includes a first track 171 and a roller 172 adapted to the first track 171.

[0141] Specifically, such as Figure 14 As shown, in this embodiment, the first track 171 is set on the frame 4, and the top of the first track 171 is provided with a groove 1711. The roller 172 is installed at the bottom of the base 12 through a rotating shaft. The roller 172 is set in the groove 1711 of the first track 171. The peripheral wall of the roller 172 abuts against the inner wall of the groove 1711. The groove 1711 limits the roller 172 in the groove 1711.

[0142] In some specific embodiments, the bottom of the groove 1711 is set to be planar, or it is set to be convex upward in the middle along the length direction of the groove 1711, or it is set to be concave downward in the middle along the length direction of the groove 1711. The outer peripheral wall of the roller 172 fits against the bottom of the groove 1711, and the groove wall of the groove 1711 extends upward and outward at an angle to enhance the limiting effect on the roller 172.

[0143] Preferably, in this embodiment, the rolling guide structure has at least two sets arranged at intervals along its extension direction to ensure the stability of the support for the base 12.

[0144] Preferably, in this embodiment, two sets of rolling guide rail structures are provided, which are respectively located on the left and right sides of the bottom of the base 12 and between the base 12 and the frame 4. Each set of rolling guide rail structures is provided with at least two rollers 172 arranged at intervals along the extension direction of the first track 171, so as to further improve the support stability of the base 12.

[0145] In this embodiment, the filter cylinder 2 is disposed on the extension path of the first guide assembly 17 and spaced apart from the fabric spreading device 1; the two ends of the first track 171 are provided with limiting parts 1712 for limiting the roller 172, and the distance between the roller 172 and the limiting part 1712 at the front end of the first track 171 is less than or equal to the distance between the spreading body 11 and the filter cylinder 2.

[0146] Specifically, when the roller 172 abuts against the limiting part 1712 at the front end of the first track 171, the front end of the material spreading body 11 on the base 12 is aligned with the filter cylinder 2, so that the extension path of the second guide component 18 corresponds to the filter cylinder 2, and the front end of the material spreading body 11 extends to align with the outer edge of the first side of the filter cylinder 2 at most.

[0147] Preferably, in this embodiment, when the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171, the cloth spreading device 1 will clear at least part of the space above the discharge collection hopper 3.

[0148] Preferably, in this embodiment, when the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171, the front end of the base 12 corresponds to the upper edge of the side of the discharge collection hopper 3 away from the filter cylinder 2.

[0149] In this embodiment, when each group of first guide components 17 is provided with multiple rollers 172, the rollers 172 abut against the limiting part 1712 at the front end of the first track 171. Specifically, the roller 172 at the front end abuts against the limiting part 1712 at the front end of the first track 171, and the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171. Specifically, the roller 172 at the rear end abuts against the limiting part 1712 at the rear end of the first track 171.

[0150] In this embodiment, a front drive device 14 parallel to the extension direction of the rolling guide rail structure is provided between the frame 4 and the base 12. The front drive device 14 is used to drive the base 12 to reciprocate, that is, the front drive device 14 is used to drive the entire fabric spreading device 1 to reciprocate along the rolling guide rail structure.

[0151] In this embodiment, the fixed end of the front drive device 14 is mounted on the frame 4, and the movable end is connected to the base 12.

[0152] In some preferred embodiments, two sets of front drive devices 14 are provided, and the two sets of front drive devices 14 operate synchronously. The two sets of front drive devices 14 are respectively located on the left and right sides of the base 12 and between the base 12 and the frame 4. This ensures that both sides of the base 12 can be subjected to force synchronously, thus ensuring the smooth operation of the base 12.

[0153] Preferably, in this embodiment, the movable end of the front drive device 14 is connected to the middle of both sides of the base 12. Specifically, a second drive part 121 extending outward is provided at the middle of both sides of the base 12, and the movable end of the front drive device 14 is connected to the second drive part 121.

[0154] Preferably, the front drive unit 14 and the first track 171 are arranged close to each other and side by side.

[0155] The front drive unit 14 can be any one or a combination of two or more of the following: hydraulic cylinder, pneumatic cylinder, and linear motor.

[0156] Preferably, in this embodiment, the extension direction of the first guide component 17 is parallel to the extension direction of the second guide component 18, and during the movement of the base 12 and the material spreading body 11, the front end of the material spreading body 11 always corresponds to the first side of the filter cylinder 2.

[0157] In some specific embodiments, a material spreading pipe 112 is provided inside the material spreading body 11, and a material conveying pipe 15 communicating with the material spreading pipe 112 is provided outside the material spreading body 11. The material conveying pipe 15 is connected between the hopper and the material spreading pipe 112 and is used to convey materials to the material spreading body 11. The material conveying pipe 15 is configured as a flexible hose.

[0158] In this embodiment, the silo is used to hold materials, and the materials can be pre-treated within the silo, such as by stirring, crushing, or adding chemicals. The silo is connected to a conveying pipe via a sludge pump. Preferably, the silo is located below the fabric spreading device.

[0159] The rear end of the base 12 is provided with a clearance opening for avoiding the material conveying pipe 15.

[0160] The material spreading body 11 includes a housing 111 and material spreading pipes 112 installed inside the housing 111. The rear end of the material spreading pipes 112 is connected to the rear side wall of the housing 111. Multiple material spreading pipes 112 are arranged at intervals along a direction perpendicular to the feed direction of the material spreading body 11, and each material spreading pipe 112 is connected to a conveying pipe 15. A clearance opening is located at the rear end of the base 12, corresponding to the conveying pipe 15. The extension length of the clearance opening along the feed direction perpendicular to the material spreading body 11 is greater than or equal to the layout range of the conveying pipe 15 at the rear end of the material spreading body 11. By providing the clearance opening, the smoothness of the reciprocating movement of the material spreading body 11 can be further ensured.

[0161] In this embodiment, a method for laying materials in the above-mentioned dewatering equipment with layered and stacked materials is also provided. When laying materials, the material-laying device 1 is first controlled to move along the first guide component 17 to the edge near the top of the filter cylinder 2; then the material-laying body 11 is driven to reciprocate along the second guide component 18 above the filter cylinder 2, so that the filter cloth 71 is layered and laid in the filter cylinder 2 and the material is sprayed onto the filter cloth 71.

[0162] Specifically, when material needs to be spread onto the filter cloth 71, the front drive device 14 first drives the entire cloth spreading device 1 forward, bringing it close to the filter cylinder 2. The front end of the spreading body 11 on the base 12 corresponds directly to the first side of the filter cylinder 2, that is, the front end of the spreading body 11 is parallel to the first side of the filter cylinder 2, and the front end of the spreading body 11 corresponds to the middle of the first side of the filter cylinder 2. At this time, the spreading body 11 is in the retracted position, and the drive device 13 of the spreading body 11 is in the initial position. Then, the drive device 13 of the spreading body 11 drives the spreading body 11 to reciprocate between the first and second sides of the filter cylinder 2, causing the filter cloth 71 to be layered within the filter cylinder 2, and spreading the material between adjacent layers of filter cloth 71 during this process.

[0163] Preferably, in this embodiment, the front end of the spreading body 11 is provided with a pushing head 113. The pushing head 113 extends forward and downward from the front end of the spreading body 11. The extension length of the pushing head 113 along the feed direction perpendicular to the spreading body 11 is greater than or equal to the length of the front end of the spreading body 11. The front end of the pushing head 113 extends to a point lower than the spreading opening 1121 of the spreading body 11.

[0164] In this embodiment, when the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171, the pusher head 113 is placed outside the base 12, which can ensure that the material laying body 11 and the base 12 are compact, while avoiding mutual interference between the pusher head 113 and the base 12.

[0165] Example 4

[0166] Based on Embodiment 1, Embodiment 2, or Embodiment 3, this embodiment of the invention further describes the structure of the material spreading body of the material spreading device 1 of a dewatering equipment for layered stacked material spreading, such as... Figures 1 to 15 As shown.

[0167] The fabric spreading device 1 includes a spreading body 11, which includes a housing 111 and a spreading pipe 112 installed inside the housing 111. The bottom of the housing 111 is provided with an opening, and the spreading pipe 112 is installed inside the housing 111. The spreading port 1121 of the spreading pipe 112 is located inside the opening.

[0168] The material spreading opening 1121 extends vertically downward from the opening, at least to the level of the bottom of the opening. Preferably, the material spreading opening 1121 extends at least partially below the opening. The opening extends in a direction perpendicular to the feed direction of the material spreading body 11, and the material spreading tube 112 extends in the feed direction of the material spreading body 11, with the material spreading opening 1121 of the material spreading tube 112 extending downward from the opening.

[0169] Preferably, in this embodiment, the material spreading pipes 112 are arranged in multiple directions perpendicular to the feeding direction of the material spreading body 11. By setting multiple material spreading pipes 112 to spread the material, it is beneficial to improve the uniformity of material spreading.

[0170] The opening is a strip-shaped opening extending perpendicular to the feeding direction of the material spreading body 11. The material spreading ports 1121 of each material spreading tube 112 are arranged along the length direction of the opening. The width of the material spreading ports 1121 of each material spreading tube 112 along the feeding direction of the material spreading body 11 is the same. Furthermore, the outlets of each material spreading tube 112 are aligned with each other along the feeding direction perpendicular to the feeding direction of the material spreading body 11.

[0171] Preferably, all the material laying pipes 112 are of the same model and the outlet of each material laying pipe 112 is of the same shape.

[0172] Preferably, in this embodiment, the material outlet 1121 extends in a horizontal direction.

[0173] In some possible embodiments, the spreading pipe 112 includes an input section 1122, a variable diameter section 1123, and an output section 1124 arranged sequentially along the feeding direction of the spreading body 11. The output section 1124 is flat, and the spreading port 1121 extends downward from the end of the output section 1124. Through the above arrangement, the material conveyed in the spreading pipe 112 gradually extends in the feeding direction perpendicular to the spreading body 11 during the conveying process, and gradually becomes thinner. That is, under the action of the pipe wall of the spreading pipe 112, the material gradually becomes thinner and wider, so that the spreading port 1121 can finally output a thin layer of material, so that the material is evenly spread on the filter cloth 71.

[0174] Preferably, the extension length of the opening is less than or equal to the width of the filter cloth 71.

[0175] More preferably, the output sections 1124 of two adjacent laying tubes 112 are bonded together, and the total extension length of the output sections 1124 of each laying tube 112 along the feed direction perpendicular to the laying body 11 is less than or equal to the width of the filter cloth 71.

[0176] Preferably, the extension direction of the output section 1124 is parallel to the bottom wall of the housing 111.

[0177] In some preferred embodiments, the spreading pipe 112 includes a variable diameter section 1123 and an output section 1124, each having a channel. The second end of the output section 1124 is provided with a spreading port 1121. The second end of the variable diameter section 1123 is connected to the first end of the output section 1124, so that the channels of the variable diameter section 1123 and the output section 1124 are connected. The cross-section of the channel of the output section 1124 is the same in the direction perpendicular to the material's forward movement, and the bottom surface of the output section 1124 that carries the material is a plane. The cross-sectional area of ​​the channel of the variable diameter section 1123 at the second end is smaller than that at the first end, and the vertical cross-section of the channel of the output section 1124 is the same as the vertical cross-section of the channel of the variable diameter section 1123 at the second end.

[0178] The first end of the variable diameter section 1123 is connected to the channel of the input section 1122 used for conveying materials. Material from the input section 1122 enters the output section 1124 from the end of the variable diameter section 1123 with the larger vertical cross-sectional area. Due to the change in the vertical cross-sectional area of ​​the channel in the output section 1124, pressure is applied within the channel, resulting in a wider distribution of material in the horizontal direction perpendicular to the material flow (i.e., the width of the channel). After flowing into the output section 1124 from the end of the variable diameter section 1123 with the smaller vertical cross-sectional area, the material further expands horizontally within the channel of the output section 1124, potentially occupying the entire channel. It then flows out evenly from the material outlet 1121 of the output section 1124 and is laid on the filter cloth.

[0179] In some embodiments, in the horizontal direction perpendicular to the material flow direction, the width of the second end of the variable diameter section 1123 channel is greater than the width of the first end. In the vertical direction perpendicular to the material flow direction, the height of the second end of the variable diameter section 1123 channel is less than the height of the first end.

[0180] Alternatively, the width of the variable diameter section 1123 gradually increases from the first end to the second end, while the height of the variable diameter section 1123 gradually decreases from the first end to the second end.

[0181] The material enters the channel through the first end of the variable diameter section 1123. During the forward movement, the pressure gradually increases, and the material occupies the variable diameter section 1123 from the center to both sides in a continuous manner.

[0182] To facilitate processing and assembly, the vertical cross-section of the channel at the first end of the variable diameter section 1123 can be circular or near-circular.

[0183] The variable diameter section 1123 has a polygonal width in the vertical cross-section at its second end, with the width direction being a straight line. Preferably, it can be a polygon with parallel sides, such as a parallelogram or rectangle.

[0184] In some implementations, the cross-sectional area of ​​the variable diameter section 1123 at the second end is 0.7-1.0 times that of the cross-sectional area at the first end.

[0185] In some embodiments, the length of the variable diameter section 1123 in the material flow direction is in a ratio of 1:0.6 to 1:3 to the width of the variable diameter section 1123 channel at its second end. The width of the second end of the variable diameter section 1123 refers to the length of the output section 1124 channel in the horizontal direction perpendicular to the material flow direction. The length of the variable diameter section 1123 refers to the length between the first end and the second end.

[0186] In some embodiments, the ratio of the length L1 of the variable diameter section 1123 to the length L2 of the output section 1124 in the material flow direction is 1:0.5-1:8.

[0187] The vertical cross-section of the output section 1124 channel is a polygon with a straight line in the width direction. Preferably, it can be a polygon with parallel sides on both sides; more preferably, the structures on both sides between the top and bottom surfaces of the output section 1124 channel are symmetrically arranged. For example, the vertical cross-section of the output section 1124 channel can be rectangular, etc. That is, the shape of the vertical cross-section of the output section 1124 channel and the variable diameter section 1123 channel at the second end is the same. The material discharged from the second end of the variable diameter section 1123 flows into the output section 1124 channel in the width direction towards the side walls, and the material can be continuously dispersed throughout the bottom of the output section 1124 channel, and flows out uniformly through the outlet of the output section 1124.

[0188] The upper end of the material outlet 1121 is configured as an arc shape that smoothly transitions to the output section, and the material outlet 1121 faces downward. The lower end of the material outlet 1121 has the same vertical cross-section as the vertical cross-section of the output section channel, preferably a rectangle.

[0189] In this embodiment, the variable diameter section 1123 and the output section 1124 can be integrated as one unit or separated as two separate units.

[0190] In some specific embodiments, the material spreading pipe 112 is installed on the rear side wall of the housing 111; the opening is located on the bottom wall of the housing 111, near the front side wall of the housing 111.

[0191] In this embodiment, the shell 111 is preferably a horizontally extending cuboid structure. Of course, it can also be other structures with cavities. The aforementioned material laying tube 112 is placed in the cavity inside the shell.

[0192] Specifically, the material laying pipe 112 can be welded to the housing 111, or the material laying pipe 112 and the housing 111 can be detachably connected. It is only necessary to ensure that there is no relative movement between the material laying pipe 112 and the housing 111 during the feeding process of the material laying body 11.

[0193] Preferred, such as Figure 5 As shown, in this embodiment, a mounting joint 16 is provided on the rear side wall of the housing 111. The mounting joint 16 is fixed on the rear side wall of the housing 111. The mounting joint 16 extends at least partially into the housing 111. The input section 1122 of the material spreading pipe 112 is sealed to the mounting joint 16.

[0194] Preferably, in this embodiment, a pusher head 113 extending forward and downward is provided on the front side wall of the housing 111, and the front end of the pusher head 113 extends to the material opening 1121 below the material laying tube 112; the pusher head 113 and the housing 111 are integrated, or the pusher head 113 and the front side wall of the housing 111 are rotatably coupled.

[0195] Preferably, in this embodiment, the pusher head 113 includes a first support plate 1131 and a second support plate 1132 extending forward and downward from the upper and lower ends of the front sidewall of the housing 111, respectively, and a solid column 1134 connected between the front ends of the first support plate 1131 and the second support plate 1132; the angle between the first support plate 1131 and the horizontal direction is greater than the angle between the second support plate 1132 and the horizontal direction, and the front ends of the first support plate 1131 and the second support plate 1132 are tangent to the solid column 1134 from the upper and lower sides, respectively.

[0196] Preferably, in this embodiment, the solid column 1134 is a solid cylindrical structure. This embodiment also provides a dewatering device for interlayer stacked fabric equipped with the aforementioned fabric spreading device 1. The dewatering device for interlayer stacked fabric further includes a drive device 13 for driving the fabric spreading device 1 to reciprocate.

[0197] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way.

Claims

1. A dewatering device for layered, stacked materials, characterized in that, include: The frame (4) is set on one side of the filter cylinder (2); The cloth-pushing and material-laying device (1) is installed on the frame (4) and moves back and forth in the horizontal direction above the filter cylinder (2) to lay the filter cloth (71) in layers inside the filter cylinder (2) and spray the material onto the filter cloth (71); The filter cloth feeding and unloading and winding device includes a rotatable cloth rolling roller (7) mounted on the frame (4) and several guide rollers (41) parallel to the cloth rolling roller (7). The filter cloth (71) is rolled up on the cloth rolling roller (7). The filter cloth (71) passes around each guide roller (41) in sequence and extends from above the cloth pushing and spreading device (1) to the front side of the cloth pushing and spreading device (1) along the feeding direction. The guide roller (41) includes a first guide roller (41-1) located near the roll roller (7), an end guide roller (41-2) located near the filter cylinder (2), and an intermediate guide roller located between the first guide roller (41-1) and the end guide roller (41-2). According to the direction of travel of the filter cloth (71) during cloth feeding, the filter cloth (71) is sequentially wound around the first guide roller (41-1), the intermediate guide roller and the end guide roller (41-2). The end guide roller (41-2) is located close to the top of the filter cylinder (2) on the side near the frame (4), and the vertical distance between the end guide roller (41-2) and the top of the filter cylinder (2) is greater than the vertical distance between the top of the pusher and spreader (1) and the top of the filter cylinder (2).

2. The dewatering equipment for layered stacked materials according to claim 1, characterized in that, The intermediate guide roller is located above the cloth pushing and spreading device (1) and includes two layers arranged in the vertical direction. According to the direction of travel of the filter cloth (71) during cloth spreading, the filter cloth (71) is sequentially wrapped around the intermediate guide roller of the lower layer and the intermediate guide roller of the upper layer. The filter cloth (71) between the intermediate guide roller of the lower layer and the intermediate guide roller of the upper layer is provided with a cleaner (42) on the upper and lower sides.

3. The dewatering equipment for layered stacked materials according to claim 2, characterized in that, According to the direction of travel of the filter cloth (71) during cloth placement, the filter cloth (71) between the lower intermediate guide roller and the upper intermediate guide roller is inclined upward. The cleaner (42) includes a rinsing back plate (422) disposed on the lower side of the filter cloth (71) and a rinsing member (421) disposed on the upper side of the filter cloth (71). The rinsing back plate (422) and the corresponding filter cloth (71) have an angle.

4. The dewatering equipment for layered stacked materials according to claim 3, characterized in that, A water collection drain (43) for collecting the washing liquid sprayed from the rinsing component (421) is installed above the fabric spreading device (1).

5. The dewatering equipment for layered stacked materials according to claim 4, characterized in that, The lower intermediate guide roller and the upper intermediate guide roller each include multiple rollers arranged at intervals along the feeding direction of the fabric spreading device (1); in the horizontal direction, the distance between the upper intermediate guide roller, which is the largest distance from the filter cylinder (2), and the filter cylinder (2) is greater than the distance between the lower intermediate guide roller, which is the smallest distance from the filter cylinder (2), and the filter cylinder (2).

6. The dewatering equipment for layered stacked materials according to claim 5, characterized in that, At least one upper intermediate guide roller has a spreading spiral on its outer peripheral wall. The spreading spiral extends from the middle of the intermediate guide roller to both ends, and the spreading spirals extending to both ends of the intermediate guide roller have opposite directions of rotation.

7. The dewatering equipment for layered stacked materials according to claim 1, characterized in that, A discharge collection hopper (3) for collecting dewatered materials is provided between the fabric spreading device (1) and the filter cylinder (2); The end guide roller (41-2) is positioned directly above the discharge collection hopper (3), and a scraper is provided at the end guide roller (41-2). Alternatively, the intermediate guide roller adjacent to the end guide roller (41-2) is positioned directly above the discharge collection hopper (3), and a scraper is provided at the intermediate guide roller adjacent to the end guide roller (41-2). The horizontal distance between the intermediate guide roller adjacent to the end guide roller (41-2) and the filter cylinder (2) is greater than the horizontal distance between the end guide roller (41-2) and the filter cylinder (2). The scraper corresponds to the lower side of the filter cloth (71).

8. The dewatering equipment for layered stacked materials according to claim 7, characterized in that, The frame is equipped with a channel for the dewatered material to fall, and the cloth pushing and spreading device disengages from the channel when it resets.

9. The dewatering equipment for layered stacked materials according to any one of claims 1 to 8, characterized in that, The fabric spreading device (1) has a double-layer structure, including a spreading body (11) for spreading and spraying materials, and a base (12) for supporting the spreading body (11). The base (12) is slidably mounted on the frame (4) via a first guide assembly (17), and the spreading body (11) is slidably mounted on the base (12) via a second guide assembly (18).

10. The dewatering equipment for layered stacked materials according to claim 9, characterized in that, The front end of the material spreading body (11) along the feeding direction is provided with a pusher head (113). The first end of the pusher head (113) is connected to the material spreading body (11) through a rotating shaft. During the pushing process, the second end of the pusher head (113) opposite to the first end is lower than the material spreading opening (1121) at the bottom of the material spreading body (11). Moreover, the height difference between the second end of the pusher head (113) and the material spreading opening (1121) is greater than the thickness of the material being spread.

11. The dewatering equipment for layered stacked materials according to claim 10, characterized in that, The main body of the material spreading body (11) includes a shell (111) and a material spreading tube (112) disposed inside the shell (111), and a fabric pushing head (113) disposed on the shell (111); The bottom of the housing (111) is provided with an opening, the material spreading pipe (112) extends along the feeding direction of the material spreading body (11), the material spreading port (1121) of the material spreading pipe (112) bends downward from the opening, and the lower end of the material spreading port (1121) extends to the bottom of the opening.

12. The dewatering equipment for layered stacked materials according to claim 11, characterized in that, The hopper (9) for holding materials is connected to the material laying pipe (112) of the material laying body (11) via a hose.

13. The dewatering equipment for layered stacked materials according to any one of claims 1 to 8, characterized in that, The frame (4) is provided with an extrusion device (8) on the side facing the feeding direction of the fabric spreading device (1). The extrusion device (8) includes a hydraulic device and an extrusion plate. The hydraulic device drives the extrusion plate to extrude downward from the top opening of the filter cylinder (2).

14. The dewatering equipment for layered stacked materials according to claim 13, characterized in that, The filter cylinder (2) is located directly below the extrusion plate, or, The frame (4) and the extrusion equipment (8) are spaced apart, and a first working position is arranged directly below the extrusion plate, and a second working position is arranged between the frame (4) and the extrusion equipment (8); A device (10) for carrying and moving the filter cylinder is provided between the frame (4) and the extrusion device (8). The device (10) for carrying and moving the filter cylinder drives the filter cylinder (2) to reciprocate between the first working position and the second working position.

15. The dewatering equipment for layered stacked materials according to claim 14, characterized in that, Multiple filter cylinders (2) and frames (4) are arranged around an extrusion device (8), with each frame (4) corresponding to a filter cylinder (2); each frame (4) is arranged opposite to a different side of the extrusion device (8). A first working position is provided directly below the extrusion plate of an extrusion device (8), and a second working position is respectively arranged between each frame (4) and a different side of an extrusion device (8); the device (10) for carrying and moving the filter cylinder drives the filter cylinder (2) to reciprocate between the first working position and the second working position.

16. The dewatering equipment for layered stacked materials according to claim 15, characterized in that, The filter cylinder (2) and the frame (4) are provided in two sets, arranged in a straight line or L-shape with an extrusion device (8); or, The filter cylinder (2) and frame (4) are arranged in three sets, forming a T-shape with an extrusion device (8); or, The filter cylinder (2) and the frame (4) are arranged in four sets, which are arranged in two straight lines that intersect with an extrusion device (8).

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