Interlayer stacked material spreading dehydration equipment and multi-station combination method

Abstract

The invention provides an interlayer stacked material spreading dehydration device and a multi-station combination method, the interlayer stacked material spreading dehydration device comprises: a frame arranged on one side of a filter cylinder; the cloth pushing and spreading device is mounted on the rack, reciprocates above the filter cylinder along the horizontal direction, and is used for laminating and spreading the filter cloth in the filter cylinder and spraying and unloading materials onto the filter cloth; and the filter cloth distributing and unloading winding device comprises a cloth roller rotatably mounted on the rack and a plurality of cloth guide rollers parallel to the cloth roller, the filter cloth is wound on the cloth roller in a rolling manner, and the filter cloth sequentially bypasses the cloth guide rollers and extends to the front side of the cloth pushing and spreading device along the feeding direction from the upper part of the cloth pushing and spreading device. By means of the arrangement, the dehydration equipment capable of laying materials in an interlayer stacking mode can be compact in layout, the occupied area is reduced, and meanwhile the positioning accuracy between the filter cloth laying and discharging rolling device and the cloth pushing and laying device is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a dewatering device for interlayer stacked paving materials, and also relates to a multi-station assembly method for the dewatering device for interlayer stacked paving materials. Background Art

[0002] As the amount of urban sewage continues to grow, the number of corresponding sewage treatment facilities has also increased, and the amount of residual sludge, a byproduct of sewage treatment, has also increased. How to properly handle and dispose of these sludges that are constantly generated and increasing in quantity has become an urgent problem to be solved in my country's environmental protection. The moisture content of residual sludge is generally above 80%. Sludge dehydration is a key step in its treatment process. However, the difficulty of deep dehydration of sludge has become a bottleneck problem restricting the harmless and resource-based treatment of sludge.

[0003] There are many methods for solid-liquid separation, including pressing, extrusion, centrifugation, etc., and the corresponding solid-liquid separation equipment is also diverse. Among them, the stacking extrusion device has the characteristics of high extrusion pressure, high extrusion limit, and long extrusion time, and has a good dehydration effect, so it is widely used. The filter cloth of the stacking extrusion device is generally an ultra-long continuous filter cloth. During operation, it is necessary to stack and spread multiple layers of filter cloth, and evenly spread the sludge between the filter cloths. For example, in the Chinese utility model patent with application number CN202023099235.0, a fixing device for laying laminated filter cloth is disclosed, and the sludge is laid on the filter cloth while laying the filter cloth. Specifically, the proximal end of the filter cloth is first pressed, and the discharge port of the sludge spreading mechanism is used to push the filter cloth forward. During the feeding process of the sludge spreading mechanism, the discharge port of the sludge spreading mechanism spreads the sludge evenly on the filter cloth.

[0004] After the water-containing material is dehydrated by pressure filtration, it is necessary to unload the squeezed and dehydrated material from the filter cloth, and then arrange and clean the filter cloth before winding it on the cloth roll. For example, in the Chinese invention patent with application number CN202210362468.X, a filter cloth unloading and unloading winding device and a material cloth unloading system are disclosed. The filter cloth unloading and unloading winding device includes a unloading functional unit, a filter cloth arranging functional unit and a filter cloth unwinding and winding functional unit connected in sequence. The unloading functional unit unloads the squeezed and dehydrated material from the filter cloth, the filter cloth arranging functional unit flattens the filter cloth unloaded with the material and cleans it, and the filter cloth unwinding and winding functional unit winds up the filter cloth and unloads the cloth.

[0005] However, the filter cloth placing, unloading and winding equipment and the sludge spreading mechanism of the existing stacking and extruding device are separately arranged along the direction close to the filter cylinder, so that the stacking and extruding device as a whole occupies a large space. Moreover, when assembling the stacking and extruding device, it is not easy to ensure the accuracy of positioning between the filter cloth placing, unloading and winding equipment and the sludge spreading mechanism, which is easy to affect the subsequent laying effect of the material.

[0006] Therefore, designing a dehydration device for stacked materials that can reduce the overall footprint of the equipment and help ensure the laying effect of the material has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0007] One object of the present invention is to provide a dewatering device for interlayer stacked materials, so as to solve the problems in the prior art that the dewatering device for interlayer stacked materials has a large overall footprint and poor positioning accuracy between the cloth pushing and spreading device and the filter cloth placing and unloading and winding device due to the separate arrangements of the cloth pushing and spreading device and the filter cloth placing and unloading and winding device.

[0008] Another object of the present invention is to solve the problem that when the existing cloth pushing and spreading device is spreading the filter cloth and the sludge simultaneously, the spreading effect of the filter cloth and the sludge is easily affected due to the adhesion of the sludge to the filter cloth and the cloth pushing and spreading device.

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

[0010] The dewatering equipment for interlayer stacked material comprises: a frame arranged at one side of the filter cylinder; a cloth pushing and spreading device installed on the frame, reciprocating in the horizontal direction above the filter cylinder, laying the filter cloth in layers in the filter cylinder and spraying and unloading materials on the filter cloth; a filter cloth placing and unloading and winding device, comprising a cloth winding roller rotatably installed on the frame and a plurality of cloth guide rollers parallel to the cloth winding roller, the filter cloth is rolled up on the cloth winding roller, the filter cloth passes around each cloth guide roller in turn, and extends from the top of the cloth pushing and spreading device to the front side of the cloth pushing and spreading device along the feeding direction.

[0011] Furthermore, the cloth guide rollers include a head end cloth guide roller arranged close to the cloth winding roller, a terminal cloth guide roller arranged close to the filter cylinder, and an intermediate cloth guide roller arranged between the head end cloth guide roller and the terminal cloth guide roller. According to the traveling direction of the filter cloth when placing the cloth, the filter cloth is sequentially wound around the head end cloth guide roller, the intermediate cloth guide roller and the terminal cloth guide roller; the terminal cloth guide roller is arranged close to the top of the filter cylinder close to the frame side, and the vertical distance between the terminal cloth guide roller and the top of the filter cylinder is greater than the vertical distance between the top of the cloth pushing and spreading device and the top of the filter cylinder.

[0012] Furthermore, the intermediate cloth guide roller is arranged above the cloth pushing and spreading device, and includes two layers arranged in the vertical direction. According to the traveling direction of the filter cloth when placing the cloth, the filter cloth is sequentially wound around the intermediate cloth guide roller of the lower layer and the intermediate cloth guide roller of the upper layer; a cleaning device is arranged on the upper and lower sides of the filter cloth between the intermediate cloth guide roller of the lower layer and the intermediate cloth guide roller of the upper layer; according to the traveling direction of the filter cloth when placing the cloth, the filter cloth between the intermediate cloth guide roller of the lower layer and the intermediate cloth guide roller of the upper layer is tilted upward, and the cleaning device includes a flushing back plate arranged on the lower side of the filter cloth and a flushing component arranged on the upper side of the filter cloth, and an angle is formed between the flushing back plate and the corresponding filter cloth. A water collector and drainer for collecting the washing liquid sprayed by the flushing component is arranged above the cloth pushing and spreading device.

[0013] Furthermore, the lower intermediate cloth guide roller and the upper intermediate cloth guide roller respectively include a plurality of rollers spaced apart in the feeding direction of the cloth pushing and spreading device; in the horizontal direction, the distance between the upper intermediate cloth guide roller with the largest distance from the filter cylinder and the filter cylinder is greater than the distance between the lower intermediate cloth guide roller with the smallest distance from the filter cylinder and the filter cylinder. Preferably, a spreading spiral is provided on the outer peripheral wall of at least one of the upper intermediate cloth guide rollers, and the spreading spiral extends from the middle of the intermediate cloth guide roller to both ends, and the rotation directions of the spreading spirals extending to both ends of the intermediate cloth guide roller are opposite; the intermediate cloth guide roller provided with the spreading spiral is an active roller.

[0014] Furthermore, a discharge collecting hopper for collecting dehydrated materials is provided between the cloth pushing and spreading device and the filter cylinder; the terminal cloth guide roller is provided directly above the discharge collecting hopper, and a mud scraper is provided at the terminal cloth guide roller, and / or an intermediate cloth guide roller adjacent to the terminal cloth guide roller is provided directly above the discharge collecting hopper, and a mud scraper is provided at the intermediate cloth guide roller adjacent to the terminal cloth guide roller; the horizontal distance between the intermediate cloth guide roller adjacent to the terminal cloth guide roller and the filter cylinder is greater than the horizontal distance between the terminal cloth guide roller and the filter cylinder, and the mud scraper corresponds to the lower side of the filter cloth.

[0015] Preferably, a channel is provided on the frame for the dehydrated material to fall, and the cloth pushing and spreading device is separated from the channel when resetting.

[0016] Furthermore, the cloth-pushing and material-spreading device has a double-layer structure, including a material-spreading body for pushing the cloth and spraying materials, and a base for carrying the material-spreading body, the base is slidably mounted on the frame through a first guide assembly, and the material-spreading body is slidably mounted on the base through a second guide assembly; when spreading the material, the base is first driven to move, so that the material-spreading body carried by the base moves to the edge close to the top of the filter cylinder; then the material-spreading body is driven to reciprocate above the filter cylinder, so that the filter cloth is stacked and laid in the filter cylinder and the material is sprayed on the filter cloth.

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

[0018] Furthermore, the material laying body includes a shell, and a material laying pipe arranged in the shell, and the cloth pushing head is arranged on the shell; an opening is arranged at the bottom of the shell, the material laying pipe extends along the feeding direction of the material laying body, and the material laying port of the material laying pipe bends downward and extends from the opening, and the lower end of the material laying port extends to the bottom of the opening; a silo for holding materials is connected to the material laying pipe of the material laying body through a hose.

[0019] Furthermore, an extrusion device is arranged on one side of the frame facing the feeding direction of the cloth pushing and spreading device, and the extrusion device includes a hydraulic device and an extrusion plate, and the hydraulic device drives the extrusion plate to squeeze downward from the top opening of the filter cylinder; the filter cylinder is arranged directly below the extrusion platen, or the frame and the extrusion device are arranged at an interval, a first working position is arranged directly below the extrusion platen, and a second working position is arranged between the frame and the extrusion device; a device for carrying and moving the filter cylinder is arranged between the frame and the extrusion device, and the device for carrying 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 stacking and paving materials of the interlayer: a plurality of filter cylinders and racks are arranged around an extrusion device, and the racks and the filter cylinders are arranged in a one-to-one correspondence; each rack is arranged relative to different side surfaces of the extrusion device; a first working position is provided directly below an extrusion plate of an extrusion device, and a second working position is respectively arranged between each rack and different side surfaces of an extrusion device; a device for carrying and moving the filter cylinder drives the filter cylinder to reciprocate between the first working position and the second working position; preferably, two groups of filter cylinders and racks are arranged in a straight line or L shape with an extrusion device; or, three groups of filter cylinders and racks are arranged in a T shape with an extrusion device; or, four groups of filter cylinders and racks are arranged in two straight lines intersecting with an extrusion device.

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

[0022] 1. The present invention arranges the filter cloth placing, unloading and winding device and the cloth pushing and spreading device on a frame, and arranges the filter cloth to extend to the front side of the cloth pushing and spreading device along the feeding direction through a cloth guide roller arranged above the cloth pushing and spreading device, so that the layout of the filter cloth placing, unloading and winding device and the cloth pushing and spreading device can be compact, and the floor space of the dehydration equipment for stacking and spreading interlayers can be reduced. At the same time, the filter cloth placing, unloading and winding device and the cloth pushing and spreading device are limited by a bracket, so that the positioning accuracy between the two can be guaranteed, thereby ensuring the laying effect of the material.

[0023] 2. The present invention sets the flushing back plate and the filter cloth at an angle. When the filter cloth is cleaned, the filter cloth is slightly deformed by the impact of the washing liquid and then fits with the flushing back plate, thereby ensuring the cleaning effect of the filter cloth. Moreover, it can ensure that when the filter cloth is laid, a large area of ​​contact between the filter cloth and the flushing back plate is avoided, thereby reducing the friction between the filter cloth and the flushing back plate, and further reducing the tension along the length direction of the filter cloth during the laying process. The deformation of the filter cloth can be reduced to ensure that the filter cloth has sufficient width when carrying materials, thereby ensuring the wrapping effect of the filter cloth on the materials.

[0024] 3. The present invention arranges a cloth pushing head at the front end of the material spreading body, and arranges the second end of the cloth pushing head to be lower than the material spreading opening during the cloth pushing process, thereby leaving space for laying materials between the filter cloth below the material spreading body and the material spreading opening, thereby preventing the materials from sticking to the material spreading body and improving the material spreading effect, thereby enabling the materials to be evenly spread between two adjacent layers of filter cloth, which is beneficial to improving the dehydration effect of the materials.

[0025] 4. The present invention is provided with a plurality of frames around an extrusion device, and each frame is arranged opposite to different sides of the extrusion device, a first working position is arranged directly below the extrusion plate of the extrusion device, a second working position is arranged between different frames and different sides of the extrusion device, and a plurality of second working positions share a first working position, so that the filter cylinders matched with different frames can reciprocate between their respective second working positions and the first working position of the extrusion device, and material laying, extrusion, material unloading and filter cloth cleaning are repeatedly and alternately performed, which can not only improve the dehydration efficiency of the material to be processed, but also reduce the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0027] Figure 1 It is a schematic structural diagram of a dewatering device for interlayer stacked materials in an embodiment of the present invention;

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

[0029] Figure 3 For the embodiment of the present invention Figure 2 The enlarged view of point B in the middle;

[0030] Figure 4 For the embodiment of the present invention Figure 2 Enlarged view of point C in the middle;

[0031] Figure 5 It is a structural schematic diagram of the connection between the cloth pushing and spreading device and the material conveying pipe in an embodiment of the present invention;

[0032] Figure 6 It is a structural schematic diagram of a cloth pushing and spreading device in an embodiment of the present invention;

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

[0034] Figure 8 For the embodiment of the present invention Figure 7 Schematic diagram of the cross section at AA in the middle;

[0035] Fig. 9 For the embodiment of the present invention Figure 8 The enlarged view of point A in the middle;

[0036] Fig.10 It is a structural schematic diagram of the cloth pushing head in the first position according to the embodiment of the present invention;

[0037] Fig.11 It is a structural schematic diagram of the cloth pushing head in the second position according to the embodiment of the present invention;

[0038] Fig.12 This is a schematic structural diagram of a paving body in an embodiment of the present invention;

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

[0040] Fig.14 It is a structural schematic diagram of the first guide assembly in an embodiment of the present invention;

[0041] Fig.15 It is a structural schematic diagram of a device for carrying and moving a filter cylinder in an embodiment of the present invention;

[0042] Fig.16 A schematic diagram of the cooperation structure of two groups of filter cylinders and a frame and an extrusion device in an embodiment of the present invention;

[0043] Fig.17 Another schematic diagram of the structure of two groups of filter cylinders and a frame cooperating with an extrusion device in an embodiment of the present invention;

[0044] Fig.18 It is a schematic diagram of the structure of three groups of filter cylinders and frames cooperating with an extrusion device in an embodiment of the present invention;

[0045] Fig.19 It is a schematic diagram of the structure of four groups of filter cylinders and frames cooperating with an extrusion device in an embodiment of the present invention.

[0046] Description of the main components in the figure:

[0047] 1. cloth-pushing and spreading device; 11. spreading body; 111. shell; 112. spreading pipe; 1121. spreading port; 1122. input section; 1123. diameter-changing section; 1124. output section; 113. cloth-pushing head; 1131. first support plate; 1132. second support plate; 1133. reinforcing plate; 1134. solid cylinder; 1135. notch; 12. base; 121. second drive unit; 13. drive device; 14. front drive device; 15. feeding pipe; 16. mounting joint; 17. first guide assembly; 171. first track; 1711. groove; 1712. limiter; 172. roller; 18. second guide assembly Components; 181, second track; 182, slider; 183, first drive unit; 2, filter cylinder; 3, discharge collection bucket; 4, frame; 41, cloth guide roller; 411, first cloth guide roller; 412, second cloth guide roller; 41-1, head end cloth guide roller; 41-2, end cloth guide roller; 42, cleaner; 421, flushing component; 422, flushing back plate; 43, water collector and drainer; 5, first cloth pressing assembly; 6, second cloth pressing assembly; 7, cloth winding roller; 71, filter cloth; 8, extrusion equipment; 9, silo; 10, equipment for carrying and moving the filter cylinder; 10-1, lifter; 10-2, pressure-bearing component; 10-3, fixed guide rail; 10-4, movable guide rail. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

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

[0050] In some specific embodiments, the cloth pushing and spreading device 1 is configured to move the folded filter cloth 71 back and forth between a first side edge and a second side edge opposite to the filter cylinder 2 , and spray the material to be processed onto the filter cloth 71 .

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

[0052] The dewatering equipment for interlayer stacked materials also includes a filter cloth placing and unloading and winding device, which includes a unloading component for unloading the dry material after extrusion and dehydration from the filter cloth 71, a filter cloth finishing component for leveling and cleaning the filter cloth 71 from which the dry material has been unloaded, and a filter cloth unwinding and winding component for winding up the filter cloth 71 and placing the cloth.

[0053] The filter cloth reeling and unreeling assembly includes a cloth reeling roller 7, on which the filter cloth 71 is rolled up. The cloth reeling roller 7 containing the filter cloth 71 and the cloth pushing and spreading device 1 are located on the same side of the filter cylinder 2, and the spreading 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 spreading device 1 is outside the filter cylinder 2, the first cloth pressing assembly 5 presses the filter cloth 71 on the first side down on the filter cylinder 2; the cloth pushing and spreading device 1 moves toward the second side of the filter cylinder 2 against the filter cloth 71, and at the same time, spreads the material evenly on the filter cloth 71, and the other end of the filter cloth 71 is dragged out from the cloth winding roller 7; when reaching the second side of the filter cylinder 2, the second cloth pressing assembly 6 presses the filter cloth 71 on the second side down on the filter cylinder 2, and the cloth pushing and spreading device 1 returns to its original position.

[0055] During the retreat 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 is activated again to press the filter cloth 71 on the first side down on the filter cylinder 2.

[0056] By repeating the movement, several layers of the material to be processed wrapped by the filter cloth 71 are laid up and down in the filter cylinder 2 .

[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 the extrusion is completed, the cloth unloading process begins. The cloth roll roller 7 in the filter cloth unloading and unloading reeling device rotates under the drive of the motor, driving the filter cloth 71 to move and recover the filter cloth 71; the material after extrusion and dehydration is carried on the filter cloth 71, and leaves the filter cylinder 2 with the filter cloth 71 and enters the filter cloth unloading and unloading reeling device. After being unloaded by the unloading assembly, the dehydrated material falls into the discharge collection hopper 3 below, and the filter cloth 71 is cleaned and leveled by the filter cloth finishing assembly and then rolled up on the cloth roll roller 7.

[0059] The material to be processed is a mixture of solid and liquid, for example, a water-containing material, and there is no limitation on the water content.

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

[0061] In this embodiment, in order to ensure the wrapping of the material, the width of the filter cloth 71 is set to be greater than the width of the internal space of the filter cylinder 2, and the width of the material spreading opening of the cloth pushing and spreading device 1 is less than or equal to the width of the internal space of the filter cylinder 2. After the cloth pushing and spreading device 1 spreads the material on the filter cloth 71, the movable bottom plate of the filter cylinder 2 moves downward, and the filter cloth 71 carrying the material falls into the filter cylinder 2. The side of the filter cloth 71 is bent upward under the obstruction of the filter cylinder 2, and the material is wrapped from both sides of the material to prevent the material from flowing out from both sides of the filter cloth 71.

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

[0063] Embodiment 1

[0064] In the prior art, the filter cloth placing and unloading winding device and the cloth pushing and spreading device of the dewatering equipment for interlayer stacked materials are arranged separately in the direction close to the filter cylinder, so that the dewatering equipment for interlayer stacked materials occupies a large space, and when assembling the dewatering equipment for interlayer stacked materials, it is not easy to ensure the accuracy of positioning between the filter cloth placing and unloading winding device and the cloth pushing and spreading device, which is easy to affect the subsequent laying effect of the material. 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 dehydration equipment for interlayer stacked materials includes a frame 4, on which a filter cloth placing, unloading and winding device and a cloth pushing and spreading device 1 are installed. The filter cloth placing, unloading and winding device and the cloth pushing and spreading device 1 are supported by a bracket, 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 unloading and unloading and winding device includes a unloading assembly, a filter cloth finishing assembly and a filter cloth unloading and winding assembly. The cloth winding roller 7 of the filter cloth unloading and winding assembly is installed on the frame 4, and the filter cloth 71 is rolled up on the cloth winding roller 7. The filter cloth finishing assembly includes a plurality of cloth guide rollers 41 arranged between the cloth winding roller 7 and the filter cylinder 2. The cloth guide rollers 41 and the cloth winding rollers 7 can be rotatably installed on the frame. The cloth guide rollers 41 are parallel to the cloth winding rollers 7, and the cloth guide rollers 41 and the cloth winding rollers 7 are aligned in the axial direction. The filter cloth 71 bypasses each cloth guide roller 41 in turn, and extends from the top of the cloth pushing and spreading device 1 to the front side of the cloth pushing and spreading device 1 along the feeding direction. The first cloth pressing assembly 5 presses the filter cloth 71 against the filter cylinder 2. That is, the filter cloth placing, unloading and winding device is arranged above the cloth pushing and spreading device 1, which can make the layout of the filter cloth placing, unloading and winding device and the cloth pushing and spreading device 1 compact, thereby reducing the floor space of the dehydration equipment for interlayer stacking and spreading.

[0067] In the present embodiment, the “filter cloth 71 is wound around the cloth guide roller 41” and “the filter cloth 71 bypasses the cloth guide roller 41” specifically means that the filter cloth 71 partially contacts the outer peripheral wall of the cloth guide roller 41 and is guided by the cloth guide roller 41, but is not wound around the cloth guide roller 41.

[0068] In some specific embodiments, the cloth-pushing and spreading device 1 reciprocates horizontally above the filter cylinder 2, lays the filter cloth 71 in layers in the filter cylinder 2, and sprays the material onto the filter cloth 71. The cloth-winding roller 7 is arranged on the frame at the rear side of the cloth-pushing and spreading device 1 along the feeding direction, and the filter cylinder 2 is arranged on the side of the frame 4 away from the cloth-winding roller 7, that is, on the side of the frame 4 toward the feeding direction of the cloth-pushing and spreading device 1.

[0069] The cloth guide roller 41 includes a head cloth guide roller 41-1 arranged near the cloth winding roller 7, a terminal cloth guide roller 41-2 arranged near the filter cylinder 2, and an intermediate cloth guide roller arranged between the head cloth guide roller 41-1 and the terminal cloth guide roller 41-2. According to the traveling direction of the filter cloth 71 when placing the cloth, the filter cloth 71 is sequentially wound around the head cloth guide roller 41-1, the intermediate cloth guide roller and the terminal cloth guide roller 41-2, and extends to the front side of the cloth pushing and spreading device 1 along the feeding direction.

[0070] In some preferred embodiments, the middle cloth guide roller is arranged above the cloth pushing and spreading device 1, and includes two layers arranged in the vertical direction. According to the moving direction of the filter cloth 71 when placing the cloth, the filter cloth 71 is sequentially wound on the middle cloth guide roller of the lower layer and the middle cloth guide roller of the upper layer.

[0071] In some preferred embodiments, the head end cloth guide roller 41-1 is arranged at the rear side and below the cloth pushing and spreading device 1, the head end cloth guide roller 41-1 is arranged on the side of the cloth rolling roller 7 close to the cloth pushing and spreading device 1, and the head end cloth guide roller 41-1 is spaced apart from the cloth rolling roller 7 in the horizontal direction.

[0072] In some possible embodiments, a lower layer middle cloth guide roller closest to the cloth winding roller 7 in the horizontal direction is arranged above the head end cloth guide roller 41-1, and the filter cloth 71 bypasses the head end cloth guide roller 41-1 and bypasses from the upper side of the lower layer middle cloth guide roller closest to the cloth winding roller 7, and the filter cloth 71 between the lower layer middle cloth guide roller closest to the cloth winding roller 7 and the head end cloth guide roller 41-1 extends in the vertical direction, and the positioner of the filter cloth reeling and winding assembly corresponds to the filter cloth 71 here.

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

[0074] In this embodiment, the intermediate cloth guide roller of the lower layer and the intermediate cloth guide roller of the upper layer are staggered in the horizontal direction. When the filter cloth 71 is wound from the intermediate cloth guide roller of the lower layer to the intermediate cloth guide roller of the upper layer, it extends upward at an angle. The cleaner 42 corresponds to the inclined extended filter cloth 71, and the cleaner 42 includes a flushing back plate 422 arranged on the lower side of the filter cloth 71 and a flushing component 421 arranged on the upper side of the filter cloth 71.

[0075] like Figure 4 As shown, in some preferred embodiments, the flushing back plate 422 is set as a flat plate, and along the length and / or width direction of the filter cloth 71, the flushing back plate 422 extends obliquely relative to the filter cloth 71, and the angle between the flushing back plate 422 and the 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 flushing back plate 422 and the width direction of the filter cloth 71 is greater than or equal to 2°, and less than or equal to 5°. Thus, it can be ensured that when the filter cloth 71 is placed, a large area of ​​contact between the filter cloth 71 and the flushing back plate 422 is avoided, thereby reducing the friction generated between the filter cloth 71 and the flushing back plate 422, thereby reducing the tension along the length direction of the filter cloth 71 during the placing process, and reducing the deformation of the filter cloth 71 to ensure that the filter cloth 71 has enough width when carrying materials, and ensure the wrapping effect of the filter cloth 71 on the materials.

[0076] In some preferred embodiments, a gap is provided between the flushing back plate 422 and the filter cloth 71, and the gap between the flushing back plate 422 and the filter cloth 71 is greater than or equal to 10 mm and less than or equal to 15 mm. Thus, when flushing the filter cloth 71, it is possible to avoid excessive deformation of the filter cloth 71, and at the same time, it is possible to further reduce the resistance of the flushing back plate 422 to the filter cloth 71 during the cloth placing process, and even eliminate the resistance of the flushing back plate 422 to the filter cloth 71.

[0077] In some preferred embodiments, the lower layer intermediate cloth guide rollers and the upper layer intermediate cloth guide rollers respectively include a plurality of intermediate cloth guide rollers arranged at intervals along the feeding direction of the cloth pushing and spreading device 1, and in the horizontal direction, the distance between the upper layer intermediate cloth guide rollers having the largest distance from the filter cylinder 2 and the filter cylinder 2 is greater than the distance between the lower layer intermediate cloth guide rollers having the smallest distance from the filter cylinder 2 and the filter cylinder 2.

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

[0079] The filter cloth unloading and unloading and winding device also includes a water collecting and draining device 43, which is arranged below and around the filter cloth 71 corresponding to the cleaning device 42, and includes a bottom wall and a surrounding wall, and at least the upper end of the surrounding wall corresponding to the washing back plate 422 extends to a position higher than the liquid spraying port of the washing component 421. A drainage port is provided at the bottom of the water collecting and draining device 43, and the water collecting and draining device 43 is used to collect the washing liquid sprayed by the washing component 421 and discharge it from the drainage port.

[0080] In this embodiment, a water collecting and draining device 43 for collecting the washing liquid sprayed by the flushing member 421 is arranged above the cloth pushing and spreading device 1. Specifically, Figure 1 and Figure 2 As shown, the two ends of the wall of the water collecting drain 43 arranged along the feeding direction of the cloth pushing and spreading device 1 respectively extend to the side of the first cloth guide roller 411 away from the second cloth guide roller 412, and the side of the second cloth guide roller 412 away from the first cloth guide roller 411, that is, the horizontal projections of the first cloth guide roller 411 and the second cloth guide roller 412 both fall into the water collecting drain 43.

[0081] In some specific embodiments, the lower intermediate cloth guide roller and the upper intermediate cloth guide roller are respectively provided with three rollers spaced apart along the feeding direction of the cloth pushing and spreading device 1, and a notch is provided at the top of the wall of the water collecting and draining device 43 away from the filter cylinder 2. In the horizontal direction, the lower intermediate cloth guide roller and the first cloth guide roller 411 located in the middle position are arranged in the water collecting and draining device 43, and the filter cloth 71 extends from the notch into the water collecting and draining device 43, and is successively wound from the upper side of the lower intermediate cloth guide roller located in the middle position and the lower side of the first cloth guide roller 411, and then the filter cloth 71 extends obliquely upward and toward the side away from the filter cylinder 2, and is wound on the second cloth guide roller 412 from the lower side of the second cloth guide roller 412.

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

[0083] Preferably, the cleaning device 42 is disposed close to the first cloth guide roller 411 .

[0084] In this embodiment, a spreading spiral is provided on the outer peripheral wall of at least one of the upper intermediate fabric guide rollers, and the spreading spiral extends from the middle of the intermediate fabric guide roller to both ends, and the rotation directions of the spreading spirals extending to both ends of the intermediate fabric guide roller are opposite; the intermediate fabric guide roller provided with the spreading spiral is an active roller, that is, the intermediate fabric guide roller provided with the spreading spiral is connected to the motor in a transmission manner.

[0085] Preferably, at least the middle cloth guide roller at the upper layer which is the largest distance from the filter cylinder 2 is provided with a spreading spiral, that is, at least the second cloth guide roller 412 is provided with a spreading spiral. Specifically, since the filter cloth is wound around the second cloth guide roller 412 at a large angle, providing the spreading spiral on the second cloth guide roller 412 can improve the stretching effect of the filter cloth.

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

[0087] like Figures 1 to 3As shown, in this embodiment, the end cloth guide roller 41-2 is arranged close to the top of the filter cylinder 2 on the side close to the frame 4, and the vertical distance between the end cloth guide roller 41-2 and the top of the filter cylinder 2 is greater than the vertical distance between the top of the cloth pushing and spreading device 1 and the top of the filter cylinder 2. After the filter cloth 71 passes around the lower side of the end cloth guide roller 41-2, it is pressed against the filter cylinder 2 by the first cloth 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 cloth pressing assembly 5 during the cloth pressing process and reduce the stroke of the first cloth pressing assembly 5, thereby improving the laying efficiency of the material.

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

[0089] In some specific embodiments, the end cloth guide roller 41-2 is arranged just above the discharge collection hopper 3, and a scraper is arranged at the end cloth guide roller 41-2, and / or, the intermediate cloth guide roller adjacent to the end cloth guide roller 41-2 is arranged just above the discharge collection hopper 3, and a scraper is arranged at the intermediate cloth guide roller adjacent to the end cloth guide roller 41-2. The horizontal distance between the intermediate cloth guide roller adjacent to the end cloth guide roller 41-2 and the filter cylinder 2 is greater than the horizontal distance between the end cloth guide roller 41-2 and the filter cylinder 2, and the scraper corresponds to the lower side of the filter cloth 71, that is, corresponds 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 dehydrated materials to fall, and the cloth pushing and spreading device 1 is separated from the channel when it is reset.

[0091] In some specific embodiments, when the cloth pushing and spreading device 1 is reset, a shielding structure is provided above the front end of the cloth pushing and spreading device 1 along the feeding direction, and the shielding structure is provided to protrude toward the side close to the filter cylinder 2, and is used to shield the front end of the cloth pushing and spreading device 1 along the feeding direction thereunder, so as to prevent the cloth pushing and spreading device 1 from being stuck with materials. The side of the shielding structure close to the filter cylinder 2 constitutes the side wall of the channel for the dehydrated materials to fall. Preferably, the side of the shielding structure close to the filter cylinder 2 is provided as a downwardly inclined slope, so as to prevent the materials from being retained on the shielding structure.

[0092] In this embodiment, the extrusion device 8 is arranged on one side of the frame 4 toward the feeding direction of the cloth pushing and spreading device 1. The extrusion device 8 includes a hydraulic device and an extrusion plate. The hydraulic device drives the extrusion plate to squeeze downward from the top opening of the filter cylinder 2.

[0093] In some possible embodiments, each set of filter cloth placing and unloading winding devices and cloth pushing and spreading devices 1 corresponds to a set of extrusion equipment 8. That is, the filter cylinder 2 is arranged directly below the extrusion platen, and the filter cylinder 2 does not need to be moved during the laying and dehydration of 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, and a device 10 for carrying and moving the filter cylinder is arranged between the frame 4 and the extrusion device 8, and the device 10 for carrying 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 plate, and a second working position is arranged between the frame 4 and the extrusion device 8, and 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.

[0095] In some specific embodiments, the fixed guide rail 10-3 is arranged at the second working position, and the lifter 10-1 for lifting the movable bottom plate of the filter cylinder 2 is arranged between the two fixed guide rails 10-3. The lifter 10-1 is extended upward and can extend into the cylinder body of the filter cylinder 2 from the lower opening at the bottom of the filter cylinder 2, and supports the movable bottom plate in the cylinder body. As the lifter 10-1 is extended or contracted, the movable bottom plate can be lifted to move upward or downward. When the lifter 10-1 is in a fully contracted state, its upper end is lower than the upper end of the fixed guide rail 10-3. Two movable guide rails 10-4 and a pressure-bearing member 10-2 are arranged at the first working position. Every two movable guide rails 10-4 are arranged parallel to each other, and the two movable guide rails 10-4 are respectively connected to the two fixed guide rails 10-3 and are respectively in the same straight line, and the pressure-bearing member 10-2 is located between the two movable guide rails 10-4. The upper end of the pressure-bearing member 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 member 10-2 is lower than the bottom end of the filter cylinder 2. The movable guide rail 10-4 can be raised and lowered. When the movable guide rail 10-4 moves upward to the limit position, its upper end is flush with the upper end of the fixed guide rail 10-3, and 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 drops to the lowest position, its upper end is lower than the upper end of the pressure-bearing member 10-2, and the pressure-bearing member 10-2 is used to support the cylinder body.

[0096] The present invention also discloses a multi-station combination method of a dehydration device for interlayer stacking and paving. Specifically, a plurality of filter cylinders 2 and racks 4 are arranged around an extrusion device 8, and each rack 4 is respectively provided with a filter cloth placing and unloading and winding device and a cloth pushing and paving device 1, and the racks 4 are arranged one by one with the filter cylinders 2. 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 rack 4 and different sides of an extrusion device 8, and a 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.

[0097] Preferably, Fig.16 and Fig.17 As shown, the filter cylinder 2 and the frame 4 are provided in two groups, and are arranged in a straight line or L shape with an extrusion device 8. Alternatively, as Fig.18 As shown, the filter cylinder 2 and the frame 4 are provided in three groups, and are arranged in a T shape with an extrusion device 8. Alternatively, as Fig.19 As shown, there are four groups of filter cylinders 2 and racks 4, which are arranged in two straight lines intersecting with an extrusion device 8. The racks are arranged opposite to the sides of the filter cylinder, and when the filter cylinder is located at the first working position, each rack is located on the extension line of the center line of the cross section of the filter cylinder. Preferably, four groups of filter cylinders 2 and racks 4 are arranged in two straight lines perpendicular to each other with an extrusion device 8. In the above scheme, a plurality of racks are arranged around an extrusion device, and each rack is arranged opposite to different sides of the extrusion device, a first working position is arranged directly below the extrusion plate of the extrusion device, and a second working position is respectively arranged between different racks and different sides of the extrusion device, and a plurality of second working positions share a first working position, so that the filter cylinders matched with different racks can move back and forth between their respective second working positions and the first working position at the extrusion device, and repeatedly and alternately perform material laying, extrusion, material unloading and filter cloth cleaning, which can not only improve the dehydration efficiency of the material to be processed, but also reduce the equipment cost.

[0098] Embodiment 2

[0099] On the basis of the first embodiment, the embodiment of the present invention further introduces the specific structure of a cloth pushing and spreading device 1 of a water-containing material dehydration device.

[0100] like Figures 7 to 9As shown, the cloth-pushing and spreading device 1 includes a spreading body 11, and a spreading opening 1121 is provided at the bottom of the spreading body 11. A cloth-pushing head 113 extending obliquely downward is provided at the front end of the spreading body 11, and the first end of the cloth-pushing head 113 is connected to the spreading body 11, and the second end of the cloth-pushing head 113 opposite to the first end of the cloth-pushing head 113 is lower than the spreading opening 1121 at least when the cloth-pushing head 113 abuts against the filter cloth 71. In the above scheme, the front end of the spreading body 11 is specifically the end of the spreading body 11 facing the filter cylinder 2, that is, the end of the spreading body 11 abuts against the filter cloth 71 during the feeding process. During the feeding process of the spreading body 11, the filter cloth 71 is supported by the cloth-pushing head 113 at the front end of the spreading body 11, so that the filter cloth 71 is dragged out from the cloth winding roller 7.

[0101] like Figure 2 and Figure 3 As shown, in the process that the cloth pushing head 113 at the front end of the material laying body 11 presses against the filter cloth 71 and the filter cloth 71 is pulled out from the cloth winding roller 7, the filter cloth is wrapped around the front end of the material laying body 11, and in the process that the material laying body 11 is fed forward, the filter cloth slides along the front end of the material laying body 11. By arranging a cloth pushing head 113 that extends downwardly and obliquely at the front end of the material laying body 11, arranging a material laying opening 1121 at the bottom of the material laying body 11 behind the cloth pushing head 113, and arranging the second end of the cloth pushing head 113 to be lower than the material laying opening 1121 when the cloth pushing head 113 abuts against the filter cloth 71, the cloth pushing head 113 pulls the filter cloth 71 out from the cloth winding roller 7 during the feeding and pushing and spreading of the material of the material laying body 11, and uses the reaction force to flatten the filter cloth 71 under the material laying body 11, and at the same time, the material is laid on On the filter cloth 71 below the paving 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 cloth pushing head 113 and the paving port 1121 can reserve space for laying materials between the filter cloth 71 below the paving body 11 and the paving port 1121, which can avoid the material from sticking to the paving body 11 and improve the sludge spreading effect, so that the material can be evenly spread between two adjacent layers of filter cloth 71, which is beneficial to improving the dehydration effect of the material.

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

[0103] In some specific embodiments, the cloth pushing head 113 extends obliquely downward from the front end of the material spreading body 11, and the thickness of the cloth pushing head 113 in the direction perpendicular to the first end to the second end gradually decreases from the first end to the second end. Specifically, the thickness of the cloth pushing head 113 gradually decreases in the direction away from the material spreading body 11. When the cloth pushing head 113 of the material spreading body 11 supports the filter cloth 71 and feeds forward, and the filter cloth 71 is dragged out of the cloth winding roller 7, the filter cloth 71 slides smoothly along the cloth pushing head 113, reducing the resistance of the cloth pushing head 113 to the filter cloth 71. At the same time, it can avoid the filter cloth 71 from having too much excess at the second side of the filter cylinder 2, and can make the filter cloth 71 above the material flat after the material spreading body 11 is retracted.

[0104] Preferably, in this embodiment, the second end of the cloth pushing head 113 is configured to be arc-shaped, thereby further improving the smoothness of the filter cloth 71 sliding along the second end of the cloth pushing head 113, and preventing the cloth pushing head 113 from damaging the filter cloth 71 during the cloth pushing process.

[0105] In some specific embodiments, the second end of the cloth pushing head 113 is a solid cylinder 1134 whose diameter is smaller than the thickness of the front end of the material spreading body 11. The solid cylinder 1134 is connected to the material spreading body 11 through a support plate extending downward from the front end of the material spreading body 11. The end of the support plate away from the solid cylinder 1134 is the first end of the cloth pushing head 113.

[0106] Specifically, the solid cylinder 1134 is disposed in front of the material spreading body 11, is spaced apart from the material spreading body 11, and is connected to the front end of the material spreading body 11 through a support plate. The solid cylinder 1134 constitutes the second end of the cloth pushing head 113.

[0107] Preferably, the diameter of the solid cylinder 1134 is smaller than the thickness of the front end of the material laying body 11; the support plates include two, which extend obliquely from the outer peripheral wall of the solid cylinder 1134 to the upper and lower edges of the front end of the material laying body 11, respectively, and one end of the support plate away from the solid body constitutes the first end of the cloth pushing head. One end of the support plate is connected to the solid cylinder 1134 as a whole, and the other end is connected to the front end of the material laying body 11, and the end of the support plate is smoothly connected to the outer peripheral wall of the solid cylinder 1134, so that the second end of the cloth pushing head 113 forms a smooth surface to avoid scratching the filter cloth 71 during the cloth 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 supporting plates to reinforce the structure of the cloth pushing head 113 .

[0110] like Fig. 9As shown, in some specific embodiments, the extension length of the support plate connected to the solid column 1134 from the bottom of the solid column 1134 is smaller than the extension length of the support plate connected to the solid column 1134 from the top of the solid column 1134, and the reinforcing plate 1133 is arranged between one end of the support plate connected to the solid column 1134 from the bottom of the solid column 1134 away from the solid column 1134 and the middle part of the support plate connected to the solid column 1134 from the top of the solid column 1134.

[0111] In this embodiment, the cloth pushing head 113 and the material spreading body 11 can be connected as one body, or can be set to rotate with each other. Preferably, at least one end of the support plate connected to the solid cylinder 1134 from the top of the solid cylinder 1134 away from the solid cylinder 1134 is smoothly connected to the material spreading body 11.

[0112] In some possible embodiments, the cloth pushing head 113 is connected as a whole with the material spreading body 11. Specifically, one end of the two support plates of the cloth pushing head 113 away from the solid cylinder 1134 is respectively connected to the upper and lower edges of the front end of the material spreading body 11, and the second end of the cloth pushing head 113 is lower than the material spreading opening 1121.

[0113] In this embodiment, in order to prevent the cloth pushing head 113 from scraping the material under the paving body 11, the paving body 11 can be controlled to rise when the paving body 11 retreats, or the cloth pushing and paving device can be controlled to rise as a whole, or the movable bottom plate of the filter cylinder can be controlled to move downward, so that the cloth pushing head 113 can avoid the material laid on the filter cloth.

[0114] In some preferred embodiments, the movable bottom plate initially moves to a position slightly lower than the top of the filter cylinder 2, and the interval between the movable bottom 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 cloth pushing and spreading device 1 moves to the outside of the first side along the feeding direction, the movable bottom plate of the filter cylinder 2 moves downward by a stroke, which matches the thickness of the material laid on the filter cloth 71 and the sum of the thickness of the filter cloth 71. Specifically, the filter cylinder includes a cylinder body and a movable bottom plate located in the cylinder body, the cylinder body is a hollow cubic structure, and water outlets are provided on the sides; the top of the cylinder body is open, the movable bottom 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 Fig.10 and Fig.11As shown, in some other possible embodiments, the cloth pushing head 113 is rotatably matched with the material laying body 11. Thus, when the material laying body 11 is fed forward, the cloth pushing head 113 can be controlled to rotate downward, so that the second end of the cloth pushing head 113 is lower than the material laying opening 1121, and a height difference greater than the thickness of the material laid on the filter cloth is formed between the cloth pushing head 113 and the material laying opening 1121. When the material laying body 11 is retracted, the cloth pushing head 113 can be controlled to rotate upward, so that the second end of the cloth pushing head 113 is higher than the material on the filter cloth 71, which can prevent the cloth pushing head 113 from scraping the material under the material laying body 11 and preventing the material from sticking to the cloth pushing head 113, thereby improving the material paving effect. At the same time, it is beneficial to increase the retraction speed of the material laying body 11 and the material laying rate.

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

[0117] like Fig.10 and Fig.11 As shown, in some specific embodiments, the front end surface of the material laying body 11 can be used to limit the rotation of the cloth pushing head 113. Specifically, the rotating shaft can be set between the middle of the front end surface of the material laying body 11 and the cloth pushing head 113, and a gap for the cloth pushing head 113 to rotate is set between the cloth pushing head 113 and the material laying body 11. When the cloth pushing head 113 rotates to the first position, the upper end of the cloth pushing head 113 close to the material laying body 11 abuts against the front end of the material laying body 11, and when the cloth pushing head 113 rotates to the second position, the lower end of the cloth pushing head 113 close to the material laying body 11 abuts against the front end of the material laying body 11. The elastic member used to drive the cloth pushing 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 cloth pushing head is provided with an arc chamfer to avoid scratching the filter cloth.

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

[0120] Specifically, when the working end of the first cloth pressing 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 cloth pressing assembly 5 is slightly lower than the bottom of the second end of the cloth pushing head 113, allowing the cloth pushing head 113 to pass smoothly.

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

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

[0123] The present embodiment also provides a dehydration device for interlayer stacked materials, which includes a filter cylinder 2 and the above-mentioned cloth pushing and spreading device 1 installed on one side of the top of the filter cylinder 2. The spreading body 11 of the cloth pushing and spreading device 1 reciprocates above the filter cylinder 2, stacks the filter cloth 71 in the filter cylinder 2 and sprays the material onto the filter cloth 71.

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

[0125] The material spreading body 11 extends in the horizontal direction. A notch is provided in the middle of the second end of the cloth pushing head 113, which is adapted to the shape of the working end of the second cloth pressing assembly provided on the side of the filter cylinder 2 away from the cloth pushing and material spreading device, so that the working end of the second cloth pressing assembly can pass through and press the filter cloth 71 covered on the second end of the cloth pushing 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 cloth pushing head 113 reaches the second side of the filter cylinder 2, the working end of the second cloth pressing assembly 6 passes through the notch from top to bottom, and presses the bending part of the filter cloth against the filter cylinder. In the direction from the first end to the second end of the cloth pushing head 113, the thickness of the cloth pushing head 113 in the direction perpendicular to the first end to the second end gradually decreases, which can facilitate the working end of the second cloth pressing assembly 6 to pass through the notch, press the filter cloth, and improve the smoothness of cloth pressing.

[0127] Embodiment 3

[0128] like Figures 1 to 15As shown, in the embodiment of the present invention, a cloth pushing and spreading device 1 of the dewatering equipment for interlayer stacked spreading materials in the above-mentioned embodiment 1 or embodiment 2 is further introduced.

[0129] The cloth-pushing and spreading device 1 of the dewatering equipment for interlayer stacked spreading materials is installed on the frame 4. The cloth-pushing and spreading device 1 is 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 driving device 13 is connected to the base 12, and the other end is connected to the spreading body 11. Thus, before pushing the cloth and spreading the material, the base 12 can be driven to carry the paving body 11 to move along the first guide assembly 17 and approach the filter cylinder 2. In the process of pushing the cloth and spreading the material, the driving device 13 only needs to drive the paving body 11 to reciprocate above the filter cylinder 2. The extension length of the driving device 13 is maintained in a smaller range, which is beneficial to ensure the smoothness of the reciprocating motion of the paving body 11 and can improve the efficiency and control accuracy of pushing the cloth and spreading the material. At the same time, the driving device 13 with a small stroke can be used to drive the paving body 11, which is beneficial to reduce the cost of the equipment.

[0130] The extension direction of the first guide assembly 17 is parallel to the extension direction of the second guide assembly 18. During the movement of the base 12 along the first guide assembly 17, the front end of the cloth-pushing body of the cloth-pushing and spreading device 1 and the first side of the filter cylinder 2 are close to each other and always aligned. Alternatively, the extension direction of the first guide assembly 17 and the extension direction of the second guide assembly 18 are set at an angle. During the movement of the base 12 along the first guide assembly 17, the front end of the cloth-pushing body of the cloth-pushing and spreading device 1 and the first side of the filter cylinder 2 are close to each other and gradually aligned.

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

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

[0133] Specifically, Figure 5 and Figure 6As shown, in this embodiment, the extension length of the base 12 along the feeding direction perpendicular to the material paving body 11 is greater than the extension length of the material paving body 11 along the feeding direction perpendicular to the material paving body 11, and the first track 171 is installed on the top of the base 12, and the two first tracks 171 are respectively arranged on both sides of the material paving body 11. Slide blocks 182 extending outward are respectively arranged on both sides of the material paving body 11, and the slide blocks 182 are respectively sleeved on the corresponding first tracks 171. Through the above arrangement, the material paving body 11 and the base 12 can always maintain a high degree of parallelism, and avoid the situation where the front end of the material paving body 11 tilts downward during the forward feeding process.

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

[0135] Preferably, in this embodiment, the material spreading body 11 extends in the horizontal direction, the top surface of the base 12 is set as a horizontal plane, and the material spreading body 11 and the top surface of the base 12 are close to each other. Thus, the compactness of the structure of the cloth pushing material spreading device 1 can be improved. The sliding guide structure is arranged between the left and right sides of the material spreading body 11 and the base 12, which can facilitate the fitting of the material spreading body 11 and the base 12.

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

[0137] In some specific embodiments, the shell 111 of the material laying body 11 is set as a rectangular parallelepiped structure, the slider 182 extends outward from the left and right side walls of the shell 111, the second track 181 is set as a column, and the slider 182 is provided with a through hole adapted to the second track 181, and the slider 182 is sleeved on the second track 181 through the through hole. The driving device 13 is provided with two groups parallel to the extension direction of the sliding guide structure, and the two groups of driving devices 13 act 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 driving device 13 is arranged on the base 12 behind the slider 182, and the movable end of the driving device 13 is connected to the slider 182. Preferably, the end of the slider 182 away from the fixed end of the driving device 13, that is, the front end of the slider 182 is provided with a first driving portion 183 protruding and extending in a direction away from the material paving body 11, and the movable end of the driving device 13 is connected to the first driving portion 183.

[0139] The driving device 13 can be any one of a hydraulic cylinder, a pneumatic cylinder, and a linear motor, or a combination of two or more thereof.

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

[0141] Specifically, Fig.14 As shown, in this embodiment, the first rail 171 is arranged on the frame 4, a groove 1711 is provided on the top of the first rail 171, and the roller 172 is installed on the bottom of the base 12 through a rotating shaft. The roller 172 is arranged in the groove 1711 of the first rail 171, and the peripheral wall of the roller 172 abuts against the inner wall of the groove 1711, and 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 flat, or to be set to be a shape that bulges upward in the middle along the length direction of the groove 1711, or to be set to be a shape that is concave downward in the middle along the length direction of the groove 1711. The outer peripheral wall of the roller 172 is fitted with the bottom of the groove 1711, and the groove wall of the groove 1711 extends upward and toward the outside of the groove 1711, thereby enhancing the limiting effect on the roller 172.

[0143] Preferably, in this embodiment, the rolling guide rail structure is provided with at least two groups arranged at intervals perpendicular to the extension direction thereof to ensure the support stability of the base 12 .

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

[0145] In this embodiment, the filter cylinder 2 is arranged on the extension path of the first guide assembly 17 and is separated from the cloth pushing and spreading device 1; limiting parts 1712 for limiting the roller 172 are provided at both ends of the first track 171, 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 portion 1712 at the front end of the first rail 171, the front end of the paving body 11 on the base 12 is aligned with the filter cylinder 2, so that the extension path of the second guide assembly 18 corresponds to the filter cylinder 2, and the front end of the paving body 11 extends at most to align with the outer edge of the first side of the filter cylinder 2.

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

[0148] Preferably, in this embodiment, when the roller 172 abuts against the limiting portion 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 collecting 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 portion 1712 at the front end of the first rail 171, specifically, the rollers 172 arranged at the front end abut against the limiting portion 1712 at the front end of the first rail 171, and the rollers 172 abut against the limiting portion 1712 at the rear end of the first rail 171, specifically, the rollers 172 arranged at the rear end abut against the limiting portion 1712 at the rear end of the first rail 171.

[0150] In this embodiment, a front drive device 14 parallel to the extension direction of the rolling guide rail structure is arranged 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 cloth pushing and spreading device 1 as a whole to reciprocate along the rolling guide rail structure.

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

[0152] In some preferred embodiments, two groups of front drive devices 14 are provided, the two groups of front drive devices 14 act synchronously, and the two groups of front drive devices 14 are respectively arranged between the left and right sides of the base 12 and the frame 4. Thus, it can be ensured that the two sides of the base 12 can be subjected to force synchronously, and the smoothness of the movement of the base 12 is ensured.

[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, the middle of both sides of the base 12 is provided with a second drive part 121 extending outward, and the movable end of the front drive device 14 is connected to the second drive part 121.

[0154] Preferably, the front driving device 14 and the first track 171 are arranged close to each other and in parallel.

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

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

[0157] In some specific embodiments, a material laying pipe 112 is disposed inside the material laying body 11, and a material delivery pipe 15 connected to the material laying pipe 112 is disposed outside the material laying body 11. The material delivery pipe 15 is connected between the material bin and the material laying pipe 112 and is used to deliver materials to the material laying body 11. The material delivery pipe 15 is configured as a hose.

[0158] In this embodiment, the silo is used to contain materials, and the materials can be pre-processed in the silo, for example, the materials are stirred, crushed, and reagents are added to the materials. The silo is connected to the feed pipe through a sludge pump. Preferably, the silo is arranged below the cloth spreading device.

[0159] A evacuation opening for evading the material delivery pipe 15 is provided at the rear end of the base 12 corresponding to the material delivery pipe 15 .

[0160] The material laying body 11 includes a shell 111, and a material laying pipe 112 installed in the shell 111. The rear end of the material laying pipe 112 is connected to the rear side wall of the shell 111. A plurality of material laying pipes 112 are arranged at intervals along a feeding direction perpendicular to the material laying body 11, and each material laying pipe 112 is connected to a feed pipe 15. The avoidance port is arranged at the rear end of the base 12, corresponding to the feed pipe 15, and the extension length of the avoidance port along the feeding direction perpendicular to the material laying body 11 is greater than or equal to the layout range of the feed pipe 15 at the rear end of the material laying body 11. By setting the avoidance port, the smoothness of the reciprocating movement of the material laying body 11 can be further ensured.

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

[0162] Specifically, when it is necessary to spread material on the filter cloth 71, the cloth-pushing and spreading device 1 is first driven forward as a whole by the front drive device 14, so that the cloth-pushing and spreading device 1 is close to the filter cylinder 2, and the front end of the spreading body 11 on the base 12 is exactly corresponding 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 driving device 13 of the spreading body 11 is in the initial position. Then, the driving device 13 of the spreading body 11 drives the spreading body 11 to reciprocate between the first side and the second side of the filter cylinder 2, so that the filter cloth 71 is stacked in the filter cylinder 2, and in this process, the material is spread between two adjacent layers of filter cloth 71.

[0163] Preferably, in the present embodiment, a cloth pushing head 113 is provided at the front end of the material spreading body 11, and the cloth pushing head 113 extends forward and downward obliquely from the front end face of the material spreading body 11, and the extension length of the cloth pushing head 113 along the feeding direction perpendicular to the material spreading body 11 is greater than or equal to the length of the front end face of the material spreading body 11, and the front end of the cloth pushing head 113 extends to a material spreading opening 1121 lower than the material spreading body 11.

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

[0165] Embodiment 4

[0166] On the basis of the first embodiment, the second embodiment or the third embodiment, the present invention further introduces the structure of the material spreading body of a material spreading device 1 of a dewatering device for interlayer stacked material spreading, such as Figures 1 to 15 shown.

[0167] The cloth spreading device 1 includes a spreading body 11, which includes a shell 111 and a spreading pipe 112 installed in the shell 111. An opening is provided at the bottom of the shell 111, the spreading pipe 112 is installed in the shell 111, and a spreading port 1121 of the spreading pipe 112 is provided in the opening.

[0168] The material laying opening 1121 extends vertically downward from the opening, at least to the level with the bottom of the opening. Preferably, the material laying opening 1121 at least partially extends below the opening. The opening extends along a direction perpendicular to the feeding direction of the material laying body 11, the material laying pipe 112 extends along the feeding direction of the material laying body 11, and the material laying opening 1121 of the material laying pipe 112 bends and extends downward from the opening.

[0169] Preferably, in this embodiment, a plurality of paving pipes 112 are arranged along a feeding direction perpendicular to the paving body 11. By providing a plurality of paving pipes 112 to lay materials, it is helpful to improve the uniformity of material spreading.

[0170] The opening is a strip-shaped opening extending in a feeding direction perpendicular to the material laying main body 11, and extends in the feeding direction perpendicular to the material laying main body 11. The material laying openings 1121 of each material laying pipe 112 are arranged along the length direction of the opening. The material laying openings 1121 of each material laying pipe 112 have the same width along the feeding direction of the material laying main body 11, and, along the feeding direction perpendicular to the material laying main body 11, the discharge openings of each material laying pipe 112 are aligned with each other.

[0171] Preferably, the material laying pipes 112 are of the same model, and the shapes of the material outlets of the material laying pipes 112 are the same.

[0172] Preferably, in this embodiment, the material laying opening 1121 extends in the horizontal direction.

[0173] In some possible embodiments, the material laying pipe 112 includes an input section 1122, a diameter-reducing section 1123, and an output section 1124 sequentially arranged along the feeding direction of the material laying body 11, the output section 1124 is arranged to be flat, and the material laying port 1121 is bent and extended downward from the end of the output section 1124. Through the above arrangement, the material conveyed in the material laying pipe 112 gradually extends in a direction perpendicular to the feeding direction of the material laying body 11 during the conveying process, and gradually becomes thinner, that is, under the action of the pipe wall of the material laying pipe 112, the material gradually becomes thinner and wider, so that the material laying port 1121 can finally output a thin layer of material, so that the material is evenly laid 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] Further preferably, the output sections 1124 of two adjacent material laying pipes 112 fit together, and the total extension length of the output sections 1124 of each material laying pipe 112 along the feeding direction perpendicular to the material 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 material laying pipe 112 includes a reducing section 1123 and an output section 1124, each of which has a channel. The second end of the output section 1124 is provided with a material laying port 1121. The second end of the reducing section 1123 is connected to the first end of the output section 1124, so that the channel of the reducing section 1123 is connected to the channel of the output section 1124; the channel of the output section 1124 has the same cross-section perpendicular to the forward direction of the material, and the bottom surface of the output section 1124 that supports the material is a plane; the cross-sectional area of ​​the channel of the reducing section 1123 at the second end is smaller than the cross-sectional area at the first end, and the vertical cross-sectional area of ​​the channel of the output section 1124 is the same as the vertical cross-sectional area of ​​the channel of the reducing 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 for conveying materials. The material from the input section 1122 enters the output section 1124 from the end of the variable diameter section 1123 with a larger vertical cross-sectional area. The change in the vertical cross-sectional area of ​​the channel of the output section 1124 exerts a pressurizing effect in the channel of the output section 1124, and the material is distributed more widely in the horizontal direction perpendicular to the flow of the material in the output section 1124 (i.e., the width of the channel). After flowing into the output section 1124 from the end of the variable diameter section 1123 with a smaller vertical cross-sectional area, the material is further distributed more widely horizontally in the channel of the output section 1124, and can occupy the entire channel of the output section 1124, and evenly flows out from the material laying port 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 channel of the reducing section 1123 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 channel of the reducing section 1123 is less than the height of the first end.

[0180] In an optional solution, the width of the passage of the diameter-changing section 1123 gradually increases from the first end to the second end, and the height of the passage of the diameter-changing 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 and is continuously dispersed from the center to both sides.

[0182] Considering the convenience of processing and assembly, the vertical cross-section of the channel at the first end of the reducing section 1123 can be circular or quasi-circular.

[0183] The width direction of the vertical cross section of the channel of the diameter-reducing section 1123 at the second end is a polygon with straight lines. Preferably, it can be a polygon with parallel upper and lower sides, such as a parallelogram, a rectangle, etc.

[0184] In some embodiments, the cross-sectional area of ​​the channel of the reducing section 1123 at the second end is 0.7-1.0 times the cross-sectional area of ​​the first end.

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

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

[0187] The vertical cross section of the channel of the output section 1124 is a polygon with straight lines in the width direction. Preferably, it can be a polygon with parallel upper and lower sides; more preferably, the structures on both sides between the top and bottom surfaces of the channel of the output section 1124 are symmetrically arranged. For example, the vertical cross section of the channel of the output section 1124 can be a rectangle, etc. That is, the channel of the output section 1124 has the same shape as the vertical cross section of the channel of the variable diameter section 1123 at the second end. The materials discharged from the second end of the variable diameter section 1123 flow into the channel of the output section 1124 in the direction of the two side walls in the width direction, and the materials can be continuously dispersed throughout the bottom of the channel of the output section 1124, and flow out evenly through the outlet of the output section 1124.

[0188] The upper end of the material paving opening 1121 is set to be an arc shape smoothly connected to the output section, and the material paving opening 1121 is downward. The lower end of the material paving opening 1121 is set to have a vertical cross-section that is the same as the vertical cross-section of the output section channel, preferably a rectangle.

[0189] The diameter-reducing section 1123 and the output section 1124 of this embodiment may be arranged in one piece or in separate pieces.

[0190] In some specific embodiments, the material laying pipe 112 is installed on the rear side wall of the shell 111 ; the opening is arranged on the bottom wall of the shell 111 , close to the front side wall of the shell 111 .

[0191] In this embodiment, the shell 111 is preferably a horizontally extending rectangular parallelepiped structure. Of course, it can also be other structures with a cavity. The above-mentioned laying pipe 112 is placed in the cavity inside the shell.

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

[0193] Preferably, Figure 5 As shown, in this embodiment, a mounting joint 16 is provided on the rear side wall of the shell 111, and the mounting joint 16 is fixed on the rear side wall of the shell 111. The mounting joint 16 at least partially extends into the shell 111, and the input section 1122 of the laying pipe 112 is sealedly connected to the mounting joint 16.

[0194] Preferably, in this embodiment, a cloth pushing head 113 extending forward and downward in an inclined manner is provided on the front side wall of the shell 111, and the front end of the cloth pushing head 113 extends to a position lower than a material laying opening 1121 of the material laying pipe 112; the cloth pushing head 113 and the shell 111 are configured as an integral part, or the cloth pushing head 113 and the front side wall of the shell 111 are rotatably matched with each other.

[0195] Preferably, in the present embodiment, the cloth pushing head 113 includes a first support plate 1131 and a second support plate 1132 extending forwardly and downwardly obliquely from the upper and lower ends of the front side wall of the shell 111, respectively, and a solid cylinder 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 cylinder 1134 from the upper and lower sides of the solid cylinder 1134, respectively.

[0196] Preferably, in this embodiment, the solid column 1134 is a solid cylindrical structure. This embodiment also provides a dehydration device for interlayer stacked paving materials equipped with the above-mentioned cloth pushing and paving device 1, and the dehydration device for interlayer stacked paving materials also includes a driving device 13 for driving the cloth pushing and paving device 1 to reciprocate.

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

Claims

1. Dewatering equipment for interlayer stacked materials, characterized in that: include: A frame (4) is arranged on one side of the filter cylinder (2); The cloth pushing and spreading device (1) is installed on the frame (4) and reciprocates above the filter cylinder (2) in the horizontal direction to lay the filter cloth (71) in layers in the filter cylinder (2) and spray the material onto the filter cloth (71); The filter cloth laying and unloading winding device comprises a cloth winding roller (7) rotatably mounted on a frame (4) and a plurality of cloth guide rollers (41) parallel to the cloth winding roller (7); the filter cloth (71) is wound on the cloth winding roller (7) in a roll; the filter cloth (71) passes over each cloth 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.

2. The dewatering device for interlayer stacked materials according to claim 1, characterized in that: The cloth guide roller (41) comprises a head cloth guide roller (41-1) arranged close to the cloth winding roller (7), a terminal cloth guide roller (41-2) arranged close to the filter cylinder (2), and an intermediate cloth guide roller arranged between the head cloth guide roller (41-1) and the terminal cloth guide roller (41-2); according to the traveling direction of the filter cloth (71) when the filter cloth (71) is released, the filter cloth (71) is wound around the head cloth guide roller (41-1), the intermediate cloth guide roller and the terminal cloth guide roller (41-2) in sequence; The end cloth guide roller (41-2) is arranged close to the top of the filter cylinder (2) on the side close to the frame (4), and the vertical distance between the end cloth guide roller (41-2) and the top of the filter cylinder (2) is greater than the vertical distance between the top of the cloth pushing and spreading device (1) and the top of the filter cylinder (2).

3. The dewatering device for interlayer stacked materials according to claim 2, characterized in that: The intermediate cloth guide roller is arranged above the cloth pushing and spreading device (1), and comprises two layers arranged in a vertical direction. According to the traveling direction of the filter cloth (71) when the cloth is laid, the filter cloth (71) is sequentially wound around the intermediate cloth guide roller of the lower layer and the intermediate cloth guide roller of the upper layer; a cleaning device (42) is arranged on the upper and lower sides of the filter cloth (71) between the intermediate cloth guide roller of the lower layer and the intermediate cloth guide roller of the upper layer; Preferably, according to the traveling direction of the filter cloth (71) when the cloth is laid, the filter cloth (71) between the lower intermediate cloth guide roller and the upper intermediate cloth guide roller is tilted upward, and the cleaning device (42) comprises a flushing back plate (422) arranged on the lower side of the filter cloth (71) and a flushing component (421) arranged on the upper side of the filter cloth (71), and an angle is formed between the flushing back plate (422) and the corresponding filter cloth (71); Preferably, a water collecting and draining device (43) for collecting the washing liquid sprayed by the flushing component (421) is arranged above the cloth pushing and spreading device (1).

4. The dewatering device for interlayer stacked materials according to claim 3, characterized in that: The lower intermediate cloth guide rollers and the upper intermediate cloth guide rollers respectively include a plurality of intermediate cloth guide rollers arranged at intervals along the feeding direction of the cloth pushing and spreading device (1); in the horizontal direction, the distance between the upper intermediate cloth guide roller having the largest distance from the filter cylinder (2) and the filter cylinder (2) is greater than the distance between the lower intermediate cloth guide roller having the smallest distance from the filter cylinder (2) and the filter cylinder (2); Preferably, a spreading spiral is provided on the peripheral wall of at least one upper intermediate cloth guide roller, and the spreading spiral extends from the middle of the intermediate cloth guide roller to both ends, and the rotation directions of the spreading spirals extending to both ends of the intermediate cloth guide roller are opposite.

5. The dewatering device for interlayer stacked materials according to claim 2, characterized in that: A material discharging collection hopper (3) for collecting dehydrated materials is provided between the cloth pushing and spreading device (1) and the filter cylinder (2); The end cloth guide roller (41-2) is arranged just above the discharge collection hopper (3), and a scraper plate is arranged at the end cloth guide roller (41-2), and / or an intermediate cloth guide roller adjacent to the end cloth guide roller (41-2) is arranged just above the discharge collection hopper (3), and a scraper plate is arranged at the intermediate cloth guide roller adjacent to the end cloth guide roller (41-2); the horizontal distance between the intermediate cloth guide roller adjacent to the end cloth guide roller (41-2) and the filter cylinder (2) is greater than the horizontal distance between the end cloth guide roller (41-2) and the filter cylinder (2), and the scraper plate corresponds to the lower side of the filter cloth (71); Preferably, a channel is provided on the frame for the dehydrated material to fall, and the cloth pushing and spreading device is separated from the channel when resetting.

6. The dewatering device for interlayer stacked materials according to any one of claims 1 to 5, characterized in that: The cloth-pushing and material-spreading device (1) is a double-layer structure, comprising a material-spreading body (11) for pushing cloth and spraying materials, and a base (12) for supporting the material-spreading body (11); the base (12) is slidably mounted on a frame (4) via a first guide assembly (17); and the material-spreading body (11) is slidably mounted on the base (12) via a second guide assembly (18).

7. The dewatering device for interlayer stacked materials according to claim 6, characterized in that: A cloth pushing head (113) is provided at the front end of the material spreading body (11) along the feeding direction, and the first end of the cloth pushing head (113) is connected to the material spreading body (11) via a rotating shaft. During the cloth pushing process, the second end of the cloth pushing head (113) opposite to the first end is lower than a material spreading opening (1121) at the bottom of the material spreading body (11), and the height difference between the second end of the cloth pushing head (113) and the material spreading opening (1121) is greater than the thickness of the material to be spread.

8. The dewatering device for interlayer stacked materials according to claim 7, characterized in that: The material spreading body (11) comprises a shell (111), and a material spreading pipe (112) arranged in the shell (111), and a cloth pushing head (113) is arranged on the shell (111); An opening is provided at the bottom of the shell (111), the material laying pipe (112) extends along the feeding direction of the material laying body (11), the material laying opening (1121) of the material laying pipe (112) bends and extends downward from the opening, and the lower end of the material laying opening (1121) extends below the opening; Preferably, the silo (9) for containing the material is connected to the material laying pipe (112) of the material laying body (11) through a hose.

9. The dewatering device for interlayer stacked materials according to any one of claims 1 to 5, characterized in that: A squeezing device (8) is provided on one side of the frame (4) facing the feeding direction of the cloth pushing and spreading device (1), and the squeezing device (8) comprises a hydraulic device and a squeezing plate, and the hydraulic device drives the squeezing plate to squeeze downward from the top opening of the filter cylinder (2); Preferably, the filter cylinder (2) is arranged directly below the extrusion plate, or, The frame (4) and the extrusion device (8) are arranged at intervals, 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 device (8); A device (10) for carrying and moving the filter cylinder is provided between the frame (4) and the extrusion device (8), and the device (10) for carrying and moving the filter cylinder drives the filter cylinder (2) to reciprocate between a first working position and a second working position.

10. The dewatering device for interlayer stacked materials according to claim 9, characterized in that: A plurality of filter cylinders (2) and frames (4) are arranged around an extrusion device (8), and the frames (4) and the filter cylinders (2) are arranged in one-to-one correspondence; and each frame (4) is arranged opposite to different sides of the extrusion device (8); A first working position is provided directly below an extrusion plate of an extrusion device (8), and a second working position is respectively arranged between each frame (4) and different sides of an extrusion device (8); a 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; Preferably, the filter cylinder (2) and the frame (4) are provided in two groups, and are arranged in a straight line or L shape with an extrusion device (8); or, The filter cylinder (2) and the frame (4) are provided in three groups, and are arranged in a T-shape with an extrusion device (8); or, Four groups of filter cylinders (2) and machine frames (4) are arranged in two mutually intersecting straight lines with an extrusion device (8).

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