Cloth pressing assembly of water-containing material dewatering device and water-containing material dewatering device

Abstract

The application provides a cloth pressing assembly of an aqueous material dewatering device and the aqueous material dewatering device. The cloth pressing assembly of the aqueous material dewatering device comprises a fixed part, a movable part, a rotating shaft in rotating cooperation with the fixed part, and a cloth pressing rod arranged on the rotating shaft. The cloth pressing rod is rotated with the rotating shaft to press and loosen the filter cloth. The cloth pressing assembly can be arranged at the top outer edge of the filter cylinder. The filter cloth is pressed on the filter cylinder by driving the movable part to rotate and drive the cloth pressing rod. The cloth pressing assembly can avoid occupying the space above the filter cylinder and interfering with other devices. Meanwhile, in the process of loosening the filter cloth by driving the cloth pressing rod, the end of the cloth pressing rod moves upward and away from the filter cloth, instead of only moving vertically, so that the cloth pressing rod can effectively avoid the front end of the cloth pushing and paving device in the feeding direction, and the stroke of the cloth pressing rod in the cloth pressing process is shortened.

Description

Technical Field

[0001] This invention belongs to the field of sludge treatment technology, specifically relating to a cloth pressing assembly for a dewatering device for water-containing materials, and also to a dewatering device for water-containing materials equipped with the cloth pressing assembly. Background Technology

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

[0003] There are various methods for solid-liquid separation, including pressing, extrusion, and centrifugation, and the corresponding equipment for solid-liquid separation is also diverse. Among them, the stacked extrusion device is widely used because it has the characteristics of high extrusion pressure, high extrusion limit, and long extrusion time, and has a good dewatering effect.

[0004] The filter cloth in a stacking and pressing device is typically an ultra-long, continuous filter cloth. During operation, multiple layers of filter cloth need to be stacked and spread, with sludge evenly distributed between the layers. During the stacking and spreading of the filter cloth, a pressing assembly is needed to secure it. This assembly consists of two sets of pressing assemblies, one at the front and one at the back. Specifically, the front pressing assembly first presses the near end of the filter cloth, while the sludge spreading mechanism's outlet pushes the filter cloth forward. When the sludge spreading mechanism reaches its furthest limit, the rear pressing assembly presses down on the furthest end of the filter cloth, and then the sludge spreading mechanism retracts. As the outlet of the sludge spreading mechanism exits the filter cylinder, the front pressing assembly is pulled out from both sides of the filter cloth and then pressed onto the next layer of filter cloth.

[0005] In existing stacking and extrusion devices, the rear pressure cloth assembly is generally located above the filter cylinder and driven by a lifting mechanism located above the filter cylinder. For example, Chinese utility model patent application number CN202023099235.0 discloses a fixing device for laying stacked filter cloth. The rear pressure rod lifting frame of the rear pressure rod mechanism is driven by the rear pressure rod lifting mechanism to move up and down on the rear pressure rod fixing frame. When the sludge spreading mechanism reaches the farthest limit position, the rear pressure rod lifting mechanism is activated, pushing the rear pressure rod lifting frame down, and the vertical pressure rod presses down on the far end of the filter cloth.

[0006] However, in the above setup, the post-pressing cloth assembly occupies a large space above the filter cylinder, which can easily interfere with other equipment above the filter cylinder (such as extrusion equipment).

[0007] Therefore, designing a fabric pressing assembly for a dewatering device for water-containing materials that can reduce the space occupied by the post-pressing assembly has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0008] On the one hand, the present invention provides a cloth pressing assembly for a dewatering device for water-containing materials, which solves the problem that existing cloth pressing assemblies occupy too much space above the filter cylinder.

[0009] On the other hand, the pressing assembly of the present invention has a simple structure. When used in conjunction with the pushing head of the cloth-laying device of the present invention, it can not only effectively press the filter cloth to the edge of the filter cylinder, but also reduce the shear force on the filter cloth, preventing tearing and allowing material to be sprayed out during cloth laying. To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] The filter cloth pressing assembly of the dewatering equipment for water-containing materials includes: a fixed part; and a movable part, including a rotating shaft that is rotatably engaged with the fixed part, and a pressing rod disposed on the rotating shaft, the pressing rod pressing / releasing the filter cloth as the rotating shaft rotates.

[0011] Furthermore, the rotating shaft extends horizontally along the length direction perpendicular to the filter cloth, and the pressing rod extends in a direction perpendicular to the rotating shaft; preferably, at least two pressing rods are arranged at axial intervals along the rotating shaft.

[0012] Furthermore, a bearing surface is provided below the rotating shaft, and the pressing rod presses the filter cloth onto the bearing surface; the end of the pressing rod, the side facing the bearing surface, is set as a plane parallel to the bearing surface when pressing the filter cloth; preferably, the pressing rod includes: a neck, extending from the outer peripheral wall of the rotating shaft in a direction perpendicular to the rotating shaft; a head, located at the end of the neck away from the rotating shaft, the side of the head facing the bearing surface protruding relative to the neck in a direction closer to the bearing surface; the side of the head facing the bearing surface is a plane that extends obliquely away from the rotating shaft in a direction away from the bearing surface, and the angle between this plane and the neck is equal to the angle between the neck and the bearing surface when the pressing rod presses the filter cloth.

[0013] Furthermore, the plane on the side of the head facing the bearing surface and the plane on the side of the head away from the bearing surface are smoothly connected at the end of the head; preferably, the end of the head has a certain thickness in the vertical direction perpendicular to the pressure rod, and a chamfer is provided between the plane on the side of the pressure rod facing the bearing surface and the end face of the head away from the rotation axis; or, the end of the head away from the rotation axis is set as an arc shape.

[0014] Furthermore, the movable part is configured with a first position in which the pressure bar rotates in a first direction to press the filter cloth onto the bearing surface, and a second position in which the pressure bar rotates in a second direction to form a certain interval between the pressure bar and the bearing surface; the certain interval allows the front end of the cloth spreading device along the feeding direction to at least partially extend into the space between the bearing surface and the pressure bar.

[0015] Furthermore, the fabric spreading device has a downwardly extending fabric spreading head at the front end along the feeding direction. The first end of the fabric spreading head is connected to the spreading body. When the fabric spreading head comes into contact with the filter cloth, the filter cloth covers the second end of the fabric spreading head opposite to the first end. The middle of the second end of the fabric spreading head has a notch that corresponds to the pressing rod. The notch runs through the fabric spreading head in a vertical direction perpendicular to the first end to the second end, and the opening of the notch faces away from the first end of the fabric spreading head. The end of the pressing rod away from the rotating shaft passes through the notch from top to bottom, pressing the filter cloth covered on the second end of the fabric spreading head onto the filter cylinder.

[0016] Preferably, the second end of the pusher head is lower than the material spreading opening at the bottom of the pusher head at least when it comes into contact with the filter cloth.

[0017] Furthermore, in the direction from the first end to the second end of the pusher head, at least the top of the pusher head is set as a downwardly sloping plane; preferably, in the direction from the first end to the second end of the pusher head, the thickness of the pusher head gradually decreases in the direction perpendicular to the first end to the second end.

[0018] Furthermore, a drive rod is provided on the rotating shaft with an extension direction opposite to that of the press rod, and a drive component is provided on the fixed part for transmission connection with the drive rod; preferably, the drive component is a telescopic device; the two ends of the telescopic device are rotatably engaged with the fixed part and the drive rod respectively; or, the telescopic device is fixedly installed on the fixed part, a strip hole is provided on the working end of the telescopic device, a rotating shaft is provided at the end of the drive rod, the rotating shaft is installed in the strip hole, and the length direction of the strip hole is perpendicular to the telescopic direction of the telescopic device.

[0019] Furthermore, the fixing part includes: a first support base extending vertically along the length direction perpendicular to the filter cloth, and two spaced bushings provided on the top of the first support base; the two ends of the rotating shaft are respectively installed in the two bushings; a second support base being vertically arranged on the side of the first support base away from the bearing surface, and a telescopic device being arranged on the second support base.

[0020] The present invention also provides a dewatering device for water-containing materials, including a cloth-pushing and spreading device and a filter cylinder. A cloth-pressing component of the above-mentioned dewatering device for water-containing materials is provided on the second side of the filter cylinder away from the cloth-pushing and spreading device. Before the cloth-pushing and spreading device feeds from the first side of the filter cylinder opposite to the second side to the second side, the end of the filter cloth is fixed on the first side. During the process of the cloth-pushing and spreading device feeding towards the second side of the filter cylinder, it abuts against the filter cloth, lays the filter cloth in layers, and sprays material onto the filter cloth. When the cloth-pushing and spreading device reaches the second side, the cloth-pressing component presses the filter cloth tightly onto the filter cylinder, and the cloth-pushing and spreading device returns to its original position.

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

[0022] 1. This invention provides a cloth pressing assembly for a dewatering device for water-containing materials, comprising a fixed part and a rotatable movable part mounted on the fixed part. The cloth pressing assembly can be positioned at the top outer edge of the filter cylinder. By driving the movable part to rotate, the cloth pressing rod is pressed firmly onto the filter cylinder. This avoids the cloth pressing assembly occupying space above the filter cylinder and prevents interference between the cloth pressing assembly and other equipment. Furthermore, during the process of the movable part driving the cloth pressing rod to loosen the filter cloth, the end of the cloth pressing rod moves upward and away from the filter cloth. During the process of the movable part driving the cloth pressing rod to tighten the filter cloth, the end of the cloth pressing rod moves downward and closer to the filter cloth, rather than simply rising and falling vertically. This allows the cloth pressing rod to effectively avoid the front end of the feeding direction of the cloth spreading device, which helps to shorten the stroke of the cloth pressing rod during the pressing process.

[0023] 2. By setting the top of the pusher head to be a downward-sloping plane in the direction from the first end to the second end, the present invention enables the filter cloth to slide downward along the downward-sloping plane at the top of the pusher head under the force of the pressure rod during the pressing process, thereby reducing the shear force on the filter cloth and preventing the filter cloth from being torn.

[0024] 3. This invention features a downwardly extending pusher head at the front end of the cloth-pushing and spreading device. During the feeding process, the pusher head pulls the filter cloth from the roll roller, and the reaction force stretches the filter cloth below the device flat, while simultaneously spreading the material onto it. This ensures effective filter cloth spreading and, moreover, the height difference between the second end of the pusher head and the spreading opening provides space for material to be spread between the filter cloth below the device and the spreading opening. This prevents material from sticking to the device, improving spreading efficiency and allowing for even distribution of material between adjacent filter cloth layers, thus enhancing dehydration.

[0025] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

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

[0027] Figure 1 This is a cross-sectional schematic diagram of the dehydration equipment in an embodiment of the present invention;

[0028] Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged view of point B in the middle;

[0029] Figure 3 This is a schematic diagram of the dehydration equipment in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the connection between the fabric spreading device and the conveying pipe in an embodiment of the present invention;

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

[0032] Figure 6 This is a top view of the material body in an embodiment of the present invention;

[0033] Figure 7 This is an embodiment of the present invention. Figure 6 Schematic diagram of the cross section at point AA;

[0034] Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged view of point A in the middle;

[0035] Figure 9 This is a schematic diagram of the structure when the fabric pusher is in the first position in an embodiment of the present invention;

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

[0037] Figure 11 This is a schematic diagram of the structure of the material body in an embodiment of the present invention;

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

[0039] Figure 13This is a schematic diagram of the structure of the first guiding component in an embodiment of the present invention;

[0040] Figure 14 This is a cross-sectional schematic diagram of the first guide component in an embodiment of the present invention;

[0041] Figure 15 This is a schematic diagram of the structure of the fabric spreading device when it moves to the second side of the filter cylinder in an embodiment of the present invention;

[0042] Figure 16 This is a schematic diagram of the structure when the movable part rotates to the second position in an embodiment of the present invention;

[0043] Figure 17 This is a schematic diagram of the structure when the movable part rotates to the first position in an embodiment of the present invention;

[0044] Figure 18 This is a schematic diagram of the structure of the second pressing fabric assembly in an embodiment of the present invention.

[0045] Description of main components in the diagram:

[0046] 1. Fabric spreading device; 11. Spreading body; 111. Shell; 112. Spreading pipe; 1121. Spreading port; 1122. Input section; 1123. Variable diameter section; 1124. Output section; 113. Fabric pushing head; 1133. Reinforcing plate; 1134. Solid column; 1135. Notch; 12. Base; 121. Second drive unit; 13. Drive device; 14. Front drive device; 15. Conveying pipe; 16. Mounting joint; 17. First guide assembly; 171. First track; 1711. Groove; 1712 1. Limiting part; 172. Roller; 18. Second guide assembly; 181. Second track; 182. Slider; 183. First drive part; 2. Filter cylinder; 3. Discharge collection hopper; 4. Frame; 41. Guide roller; 5. First pressing assembly; 6. Second pressing assembly; 61. Fixed part; 611. First support seat; 612. Second support seat; 62. Movable part; 621. Rotating shaft; 622. Pressing rod; 6221. Neck; 6222. Head; 623. Drive rod; 7. Rolling roller; 71. Filter cloth; 8. Extrusion equipment.

[0047] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0049] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] like Figures 1 to 18 As shown in the embodiment of the present invention, a dewatering device for water-containing materials is introduced, including a cloth-pushing and laying device 1 and a filter cylinder 2. The cloth-pushing and laying device 1 lays the filter cloth 71 in the filter cylinder 2 and sprays the material to be treated onto the filter cloth 71.

[0052] During the material laying process, two sets of cloth pressing assemblies are used to fix the filter cloth 71.

[0053] In some specific embodiments, the cloth spreading device 1 is configured to fold the filter cloth 71 back and forth between the first side and the opposite second side of the filter cylinder 2 and spray the material to be treated onto the filter cloth 71.

[0054] In the direction of movement of the filter cloth 71, a first pressing cloth assembly 5 and a second pressing cloth assembly 6 are respectively provided on the first and second opposite sides of the top of the filter cylinder 2.

[0055] The filter cloth 71 is wound into a roll on the roll roller 7. The roll roller 7 containing the filter cloth 71 and the cloth spreading device 1 are located on the same side of the filter cylinder 2. The spreading port 1121 of the cloth spreading device 1 is higher than the upper edge of the filter cylinder 2.

[0056] One or more guide rollers 41 are provided between the cloth rolling roller 7 and the filter cylinder. After the filter cloth 71 passes around the guide roller 41, the first pressing assembly 5 presses the filter cloth onto the filter cylinder.

[0057] During the process of laying the filter cloth 71 from the first side to the second side of the filter cylinder 2, when the cloth-pushing and laying device 1 is outside the filter cylinder 2, the first cloth-pressing assembly 5 presses the filter cloth 71 on the first side onto the filter cylinder 2; the cloth-pushing and laying device 1 pushes the filter cloth 71 towards the second side of the filter cylinder 2, and at the same time, spreads the material evenly on the filter cloth 71, and the other end of the filter cloth 71 is pulled out from the rolling roller 7; when it reaches the second side of the filter cylinder 2, the second cloth-pressing assembly 6 presses the filter cloth 71 on the second side onto the filter cylinder 2, and the cloth-pushing and laying device 1 returns to its original position.

[0058] During the retraction of the cloth pushing and spreading device 1, and / or, after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 is pulled out; after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 operates again, pressing the filter cloth 71 on the first side onto the filter cylinder 2.

[0059] This process is repeated, and several layers of material to be treated, wrapped in filter cloth 71, are laid up and down inside the filter cylinder 2.

[0060] It also includes an extrusion device 8, which is located above the filter cylinder 2 and is used to extrude the material.

[0061] In this embodiment, the material to be processed is a solid-liquid mixture, such as a material containing water. There is no limitation on the water content.

[0062] In this embodiment, the dewatering equipment for water-containing materials is preferably used for solid-liquid separation of sludge with high water content.

[0063] In this embodiment, to ensure the material is properly encapsulated, the width of the filter cloth is greater than the width of the internal space of the filter cylinder, and the width of the material spreading opening of the cloth-pushing and spreading device is less than or equal to the width of the internal space of the filter cylinder. After the cloth-pushing and spreading device lays the material on the filter cloth, the movable bottom plate of the filter cylinder moves down, and the filter cloth carrying the material falls into the filter cylinder. The sides of the filter cloth are bent upwards by the obstruction of the filter cylinder, wrapping the material from both sides to prevent the material from flowing out from both sides of the filter cloth.

[0064] In some preferred embodiments, there is a certain gap between the pressing position of the first pressing assembly and the internal space of the filter cylinder. Thus, when the movable bottom plate of the filter cylinder moves down, the portion of the filter cloth that exceeds the internal space of the filter cylinder bends upward under the obstruction of the first side of the filter cylinder, so that the side of the material close to the pushing and spreading device is also wrapped by the filter cloth.

[0065] Example 1

[0066] In existing dewatering equipment for water-containing materials, the pressing assembly, specifically the second pressing assembly 6, is typically located above the filter cylinder 2. A lifting mechanism drives the pressing rod 622; the lifting mechanism lowers the pressing rod 622 to press the filter cloth 71, and raises it to release the filter cloth 71. This pressing assembly occupies a significant amount of space above the filter cylinder 2 and can easily interfere with other equipment above the filter cylinder 2 (such as the extrusion device 8).

[0067] like Figures 15 to 18 As shown in the embodiment of the present invention, a pressing cloth assembly for a dewatering device for water-containing materials is introduced to solve the above-mentioned problems and reduce the space occupied by the pressing cloth assembly.

[0068] In this embodiment, the pressing assembly includes a fixed part 61 and a movable part 62, wherein the movable part 62 is rotatably mounted on the fixed part 61.

[0069] Specifically, the movable part 62 includes a rotating shaft 621 that is rotatably engaged with the fixed part 61, and a pressing rod 622 disposed on the rotating shaft 621. The pressing rod 622 rotates with the rotating shaft 621 to press / release the filter cloth 71.

[0070] With the above configuration, the pressing assembly can be placed at the top outer edge of the filter cylinder 2. By driving the movable part 62 to rotate, the pressing rod 622 is driven to press the filter cloth 71 onto the filter cylinder 2. This avoids the pressing assembly occupying the space above the filter cylinder 2 and prevents the pressing assembly from interfering with other equipment. At the same time, when the movable part drives the pressing rod 622 to release the filter cloth 71, the end of the pressing rod 622 moves upward and away from the filter cloth 71. When the movable part drives the pressing rod 622 to press the filter cloth 71, the end of the pressing rod 622 moves downward and closer to the filter cloth 71, instead of just moving up and down in the vertical direction. This allows the pressing rod 622 to effectively avoid the front end of the feeding direction of the cloth pushing and spreading device 1, which helps to shorten the stroke of the pressing rod 622 during the pressing process.

[0071] In this embodiment, the rotating shaft 621 extends horizontally along the length direction perpendicular to the filter cloth 71, and the pressing rod 622 extends along the direction perpendicular to the rotating shaft 621. At least two pressing rods 622 are arranged at intervals along the axial direction of the rotating shaft 621.

[0072] In this embodiment, the pressing rods 622 are parallel to each other and of equal length, and the ends of the pressing rods 622 away from the rotating shaft 621 simultaneously press the filter cloth 71. The pressing rods 622 press the filter cloth 71 near the left and right sides along the laying direction, which can ensure the fixing effect of the filter cloth 71 and help prevent the material on the filter cloth 71 from flowing out from both sides of the filter cloth 71.

[0073] In some possible embodiments, at least two pressure rods 622 are provided, with the two pressure rods 622 corresponding to the left and right sides of the filter cloth 71 near the laying direction, respectively.

[0074] In some other possible embodiments, the number of the pressing rods 622 may be greater than two, wherein two pressing rods 622 correspond to the left and right sides of the filter cloth 71 near the laying direction, respectively, and the remaining pressing rods 622 are arranged between the two pressing rods 622.

[0075] In this embodiment, a bearing surface is provided below the rotating shaft 621, and the pressing rod 622 presses the filter cloth 71 onto the bearing surface; the end of the pressing rod 622 and the side facing the bearing surface are set as a plane parallel to the bearing surface when pressing the filter cloth 71.

[0076] In some specific embodiments, the bearing surface can be the top plane of the filter cylinder 2, or it can be a plane separately located near the filter cylinder 2, as long as it can cooperate with the pressure rod 622 to fix the end of the filter cloth 71. In this embodiment, the top plane of the filter cylinder 2 is used as the bearing surface for illustration.

[0077] In some possible embodiments, the rotating shaft 621 can also be positioned below or flush with the bearing surface. It is only necessary to make a bend in the pressing rod 622 so that the end of the pressing rod 622 extends above the bearing surface, so that when the rotating shaft 621 rotates, the end of the pressing rod 622 can press the filter cloth 71 onto the bearing surface.

[0078] In the above solution, by placing the rotating shaft 621 above the bearing surface, the size of the pressing rod 622 can be reduced, further reducing the space occupied by the pressing assembly. By setting the end of the pressing rod 622, the side facing the bearing surface, as a plane parallel to the bearing surface when pressing the filter cloth 71, the filter cloth 71 can be clamped between the bearing surface and the plane at the end of the pressing rod 622 when the pressing rod 622 presses the filter cloth 71, through a plane abutting against the filter cloth 71, thereby improving the fixing effect of the filter cloth 71.

[0079] like Figure 18As shown, in some specific embodiments, the pressure rod 622 includes a neck 6221 and a head 6222. The neck 6221 extends from the outer peripheral wall of the rotation shaft 621 in a direction perpendicular to the rotation shaft 621. The head 6222 is located at one end of the neck 6221 away from the rotation shaft 621. The side of the head 6222 facing the bearing surface protrudes relative to the neck 6221 in a direction closer to the bearing surface. The side of the head 6222 facing the bearing surface has a plane that extends obliquely away from the bearing surface in a direction away from the rotation shaft 621. The angle between this plane and the neck 6221 is equal to the angle between the neck 6221 and the bearing surface when the pressure rod presses the filter cloth 71.

[0080] Specifically, such as Figures 16 to 18 As shown, the pressing rod 622 extends radially along the rotating shaft 621, the first end of the neck 6221 is connected to the rotating shaft 621, and the first end of the head 6222 is connected to the second end of the neck 6221.

[0081] The neck 6221 can be configured such that its cross-sectional area remains constant, gradually increases, or gradually decreases along the direction away from the rotation axis 621. The cross-sectional shape of the neck 6221 can be circular, near-circular, or prismatic. In some preferred embodiments, the cross-sectional area of ​​the neck 6221 is set to rectangular, and the cross-sectional area of ​​the neck 6221 is the same everywhere along the direction away from the rotation axis 621.

[0082] The first end of the head 6222 protrudes towards the bearing surface relative to the second end of the neck 6221, and the side of the head 6222 facing the bearing surface is configured as a plane inclined away from the bearing surface in a direction away from the rotation axis 621.

[0083] Specifically, along the direction away from the rotation axis 621, the cross-sectional area of ​​the head 6222 gradually decreases. The cross-sectional area of ​​the first end of the head 6222 is larger than that of the second end of the head 6222, and the cross-sectional area of ​​the first end of the head 6222 is larger than that of the neck 6221. The left side, right side, and side away from the bearing surface of the neck 6221 and the head 6222 are coplanar, thus the thickness of the head 6222 along the vertical direction perpendicular to the neck 6221 of the self-pressing rod 6222 gradually decreases.

[0084] In this embodiment, the height of the rotating shaft 621 is higher than the height of the bearing surface. When the pressure rod 622 presses the filter cloth 71, the pressure rod 622 is inclined downward from the rotating shaft 621. By setting the side of the head 6222 facing the bearing surface to be a plane that extends inclined away from the rotating shaft 621 and away from the bearing surface, the angle between this plane and the neck 6221 is equal to the angle between the neck 6221 and the bearing surface when the pressure rod presses the filter cloth 71. This allows the side of the head 6222 facing the bearing surface to rotate to a horizontal position when the pressure rod 622 presses the filter cloth 71, thereby clamping the filter cloth 71 between the two planes and improving the fixing effect of the filter cloth 71.

[0085] Preferably, in this embodiment, the cross-sectional area of ​​the second end of the head 6222 is smaller than the cross-sectional area of ​​the neck 6221.

[0086] In this embodiment, the plane of the head 6222 facing the bearing surface and the plane of the head 6222 away from the bearing surface are smoothly connected at the end of the head 6222.

[0087] Specifically, the end of the head 6222 has a certain thickness in the vertical direction perpendicular to the pressing rod 622. This certain thickness can prevent the formation of a sharp angle at the second end of the head 6222. Specifically, it can prevent the formation of an angle less than 90° at the second end of the head 6222, thereby preventing damage to the filter cloth 71 during the pressing process.

[0088] In some preferred embodiments, a chamfer is provided between the plane of the pressure bar 622 facing the bearing surface and the end face of the head 6222 away from the rotation shaft 621; or, the end of the head 6222 away from the rotation shaft 621 is provided as an arc.

[0089] With the above settings, the filter cloth 71 can be better protected during the pressing process, and the end of the pressing rod 622 can be prevented from puncturing the filter cloth 71.

[0090] In this embodiment, the movable part 62 of the pressing assembly is configured with a first position in which the pressing rod 622 presses the filter cloth 71 onto the bearing surface when rotating in a first direction, and a second position in which the pressing rod 622 rotates in a second direction and forms a certain interval between the pressing rod 622 and the bearing surface. This certain interval allows the front end of the pushing and spreading device 1 along the feeding direction to at least partially extend into the space between the bearing surface and the pressing rod 622.

[0091] Specifically, in this embodiment, the dewatering equipment for water-containing materials includes a cloth-pushing and spreading device 1 and a filter cylinder 2. In this embodiment, the cloth-pressing component of the dewatering equipment for water-containing materials is located on the second side of the filter cylinder 2 away from the cloth-pushing and spreading device 1, and is a second cloth-pressing component 6. A first cloth-pressing component 5 is also provided on the first side of the filter cylinder 2 away from the cloth-pushing and spreading device 1.

[0092] Before the fabric pushing and laying device 1 feeds from the first side opposite to the second side of the filter cylinder 2 to the second side, the end of the filter cloth 71 is fixed on the first side by the first pressing assembly 5. During the process of the fabric pushing and laying device 1 feeding to the second side of the filter cylinder 2, it abuts against the filter cloth 71, pushes the filter cloth 71 forward, and pulls the filter cloth 71 out from the rolling roller 7. At the same time, the filter cloth 71 is stretched flat. The fabric pushing and laying device 1 lays the filter cloth 71 in layers and sprays material onto the filter cloth 71. When the fabric pushing and laying device 1 reaches the second side, the second pressing assembly 6 in this embodiment presses the filter cloth 71 tightly on the second side of the filter cylinder 2, and the fabric pushing and laying device 1 returns to its original position.

[0093] In the above scheme, the process of pushing and spreading the material 1 against the filter cloth 71 and moving towards the second side of the filter cylinder 2, while simultaneously spreading the material evenly on the filter cloth 71, is defined as the pushing and spreading process.

[0094] In this embodiment, during the fabric spreading process, the filter cloth 71 covers the front end of the fabric spreading device 1 along the feeding direction. As the front end of the fabric spreading device 1 along the feeding direction pushes the filter cloth 71 toward the second side of the filter cylinder 2, the movable part 62 is in the second position, and a certain gap is formed between the pressing rod 622 and the top of the filter cylinder 2.

[0095] When the front end of the pusher and spreader 1 moves against the filter cloth 71 along the feeding direction to the second side of the filter cylinder 2, the front end of the pusher and spreader 1 along the feeding direction extends at least partially to below the pressing rod 622, the movable part 62 rotates to the first position, and the pressing rod 622 presses the filter cloth 71 tightly onto the second side of the filter cylinder 2.

[0096] Specifically, when the front end of the pusher and spreader 1 moves along the feeding direction to the second side of the filter cylinder 2, the front end of the pusher and spreader 1 along the feeding direction at least partially overlaps with the moving path of the presser rod 622. During the rotation of the movable part 62 to the first position, the presser rod 622 presses the filter cloth 71 covered on the front end of the pusher and spreader 1 along the feeding direction onto the second side of the filter cylinder 2.

[0097] In this embodiment, the front end of the cloth pushing and spreading device 1 is provided with a notch 1135 for the pressing rod 622 to pass through. The pressing rod 622 passes through the notch 1135 and presses the filter cloth 71 onto the filter cylinder 2.

[0098] In some preferred embodiments, the front end of the fabric spreading device 1 along the feeding direction is provided with a downwardly extending fabric spreading head 113. The first end of the fabric spreading head 113 is connected to the spreading body 11. When the fabric spreading head 113 abuts against the filter cloth 71, the filter cloth 71 covers the second end of the fabric spreading head 113 opposite to the first end. The middle of the second end of the fabric spreading head 113 is provided with a notch 1135 corresponding to the pressing rod 622. The notch 1135 extends through the fabric spreading head 113 in a vertical direction perpendicular to the first end to the second end. The opening of the notch 1135 faces away from the first end of the fabric spreading head 113. The end of the pressing rod 622 away from the rotating shaft 621 passes through the notch 1135 from top to bottom, pressing the filter cloth 71 covered on the second end of the fabric spreading head 113 onto the filter cylinder 2.

[0099] In this embodiment, along the horizontal direction perpendicular to the first end to the second end of the pusher head 113, the width of the pressing rod 622 is smaller than the width of the notch 1135. The pressing rod 622 passes through the notch 1135 from top to bottom, pressing the filter cloth 71 covered on the second end of the pusher head 113 onto the filter cylinder 2.

[0100] Preferably, in this embodiment, at least the top of the pusher head 113 is configured as a downwardly inclined plane in the direction from the first end to the second end. With this configuration, the inclined plane at the top of the pusher head 113 can be used to relieve pressure during the pressing process of the presser rod 622, allowing the filter cloth 71 to slide downwards along the downwardly inclined plane at the top of the pusher head 113 under the force of the presser rod 622. This reduces the shear force on the filter cloth 71 and prevents tearing of the filter cloth 71.

[0101] Preferably, in this embodiment, the pusher head 113 is inclined downwards in the direction from the first end to the second end, and the thickness of the pusher head 113 gradually decreases in the direction perpendicular to the first end to the second end. This allows the end of the pressing rod 622 to pass smoothly through the notch 1135, pressing the filter cloth 71 firmly onto the filter cylinder 2.

[0102] Preferably, in this embodiment, the second end of the pusher head 113 is lower than the spreading opening 1121 at the bottom of the pusher spreading device 1 at least when the pusher head 113 comes into contact with the filter cloth 71.

[0103] In this embodiment, the pressing assembly further includes a driving member for driving the movable part 62 to rotate. The driving member is connected to the rotating shaft 621 and can drive the rotating shaft 621 to rotate in any way. For example, the driving member can be a servo motor that drives the rotating shaft 621 through gears.

[0104] In some specific embodiments, the rotating shaft 621 is provided with a drive rod 623 whose extension direction is opposite to that of the pressing rod 622, and the fixing part 61 is provided with a drive component that is pulsatorically connected to the drive rod 623. The drive component is a telescopic device.

[0105] In some possible embodiments, the two ends of the telescopic device are respectively rotatably engaged with the ends of the fixed part 61 and the drive rod 623.

[0106] In some possible embodiments, the telescopic device is fixedly mounted on the fixed part 61, and a strip-shaped hole is provided on the working end of the telescopic device. A rotating shaft is provided at the end of the drive rod 623. The rotating shaft is installed in the strip-shaped hole. The length direction of the strip-shaped hole is perpendicular to the telescopic direction of the telescopic device. During the telescopic process, the rotating shaft can slide along the strip-shaped hole, causing the movable part 62 to rotate.

[0107] Preferably, in this embodiment, the movable part 62 is configured as an integral piece, and the pressing rod 622, the rotating shaft 621, and the driving rod 623 are integrally formed.

[0108] In this embodiment, the telescopic device can be a cylinder, a hydraulic cylinder, a linear motor, etc.

[0109] like Figure 18 As shown, in this embodiment, the fixing part 61 includes a first support base 611 and a second support base 612. The first support base 611 extends vertically along a direction perpendicular to the length of the filter cloth 71, and two spaced-apart bushings are provided on the top of the first support base 611; the two ends of the rotating shaft 621 are respectively installed in the two bushings. The second support base 612 is vertically disposed on the side of the first support base 611 away from the bearing surface, and a telescopic device is disposed on the second support base 612.

[0110] In some possible embodiments, the fixing part 61 is disposed on the outer wall of the filter cylinder 2 on the side away from the cloth spreading device 1. The first support 611 extends vertically, and two spaced-apart bushings are disposed on the top of the first support 611, the bushings being higher than the upper edge of the filter cylinder 2. The second support 612 extends horizontally from the bottom of the first support 611 in a direction away from the filter cylinder 2. The second support 612 is provided with an installation port, and the telescopic device is fixedly installed in the installation port. The working end of the telescopic device is disposed upward and is connected to the drive rod 623 for transmission.

[0111] Example 2

[0112] Based on Embodiment 1, this embodiment of the invention further describes the specific structure of a fabric spreading device 1 for a dewatering equipment for water-containing materials, such as... Figures 1 to 14 As shown.

[0113] like Figure 8 As shown, in this embodiment, the fabric spreading device 1 includes a spreading body 11, and a spreading opening 1121 is provided at the bottom of the spreading body 11. The front end of the spreading body 11 is provided with a downwardly extending spreading head 113. The first end of the spreading head 113 is connected to the spreading body 11, and the second end of the spreading head 113, which is opposite to the first end of the spreading head 113, is lower than the spreading opening 1121 at least when the spreading head 113 abuts against the filter cloth 71.

[0114] like Figure 1 and Figure 2 As shown, the pusher head 113 at the front end of the spreading body 11 presses against the filter cloth 71, causing the filter cloth 71 to be pulled out from the rolling roller 7. During this process, the filter cloth covers the front end of the spreading body 11, and slides along the front end of the spreading body 11 as the spreading body 11 moves forward.

[0115] During the feeding and spreading process of the material spreading body 11, the pusher head 113 pulls the filter cloth 71 out from the roll roller 7. The reaction force is used to stretch the filter cloth 71 below the material spreading body 11 and spread the material on the filter cloth 71 below the material spreading body 11. On the one hand, this can ensure the spreading effect of the filter cloth 71. On the other hand, the height difference between the second end of the pusher head 113 and the spreading port 1121 can leave space for the material to be spread between the filter cloth 71 below the material spreading body 11 and the spreading port 1121. This can prevent the material from sticking to the material spreading body 11 and improve the spreading effect of sludge. Thus, the material can be evenly spread between two adjacent layers of filter cloth 71, which is conducive to improving the dewatering effect of the material.

[0116] Preferably, in this embodiment, at least when the pusher head 113 abuts against the filter cloth 71, the height difference between the second end of the pusher head 113 and the material spreading opening 1121 is greater than the thickness of the material spread on the filter cloth. This further prevents the material from adhering to the material spreading body 11.

[0117] In some specific embodiments, the pusher head 113 extends downward at an angle from the front end of the spreading body 11, and the thickness of the pusher head 113 gradually decreases in the direction perpendicular to the first end to the second end from the first end to the second end. Specifically, the thickness of the pusher head 113 gradually decreases in the direction away from the spreading body 11. With the above arrangement, during the process of the filter cloth 71 being pulled out from the rolling roller 7, the filter cloth 71 slides smoothly along the pusher head 113, reducing the resistance of the pusher head 113 to the filter cloth 71. 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 spreading body 11 retracts.

[0118] Preferably, in this embodiment, the second end of the pusher head 113 is set to an arc shape.

[0119] Preferably, in the direction perpendicular to the first end to the second end of the pusher head 113, the maximum thickness of the arc at the second end of the pusher head 113 is less than the thickness at the first end of the pusher head 113.

[0120] In some specific embodiments, the second end of the pusher head 113 is a solid column 1134 with a diameter smaller than the thickness of the front end of the fabric body 11. The solid column 1134 is connected to the fabric body 11 through a support plate that extends downward from the front end of the fabric body 11. The end of the support plate away from the solid column 1134 is the first end of the pusher head 113.

[0121] Specifically, the solid column 1134 is positioned in front of the material laying body 11, spaced apart from it, and connected to the front end of the material laying body 11 via the support plate. In some possible embodiments, the two support plates extend obliquely from the upper and lower sides of the solid column 1134 along the tangential direction of the solid body towards the upper and lower edges of the front end of the material laying body 11; the ends of the support plates are smoothly connected to the outer peripheral wall of the solid column 1134.

[0122] Preferably, in this embodiment, the two support plates are tangent to the upper and lower sides of the solid column 1134, respectively. Preferably, in this embodiment, a reinforcing plate 1133 is provided between the two support plates to reinforce the structure of the fabric pusher head 113.

[0123] In some possible embodiments, the pusher head 113 is integrated with the material spreading body 11. Specifically, the ends of the two support plates of the pusher head 113 that are away from the solid column 1134 are respectively connected to the upper and lower edges of the front end of the material spreading body 11, and the second end of the pusher head 113 is lower than the material spreading opening 1121.

[0124] In this embodiment, to prevent the pusher head 113 from scraping the material below the material spreading body 11, the material spreading body 11 can be raised when it retracts, or the entire pusher spreading device can be raised, or the movable base plate of the filter cylinder can be moved downwards to allow the pusher head 113 to avoid the material spread on the filter cloth. In some preferred embodiments, the movable base plate initially moves to a position slightly below the top of the filter cylinder 2, and the distance between the movable base plate and the top of the filter cylinder 2 is greater than or equal to the thickness of the material spread on the filter cloth 71; when the pusher spreading device 1 moves beyond the first side along the front end in the feeding direction, the movable base plate of the filter cylinder 2 moves downwards by one stroke, which matches the thickness of the material spread on the filter cloth 71 and the sum of the thickness of the filter cloth 71.

[0125] Specifically, in this embodiment, the filter cylinder includes a cylinder body and a movable bottom plate located inside the cylinder body. The cylinder body has a hollow cubic structure and water outlet holes are provided on all 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.

[0126] like Figure 9 and Figure 10 As shown, in some other possible embodiments, the pusher head 113 is rotatably coupled to the material spreading body 11. Thus, when the material spreading body 11 advances, the pusher head 113 can be controlled to rotate downwards, so that the second end of the pusher head 113 is lower than the material spreading opening 1121, creating a height difference between the pusher head 113 and the material spreading opening 1121 greater than the thickness of the material spread on the filter cloth. When the material spreading body 11 retracts, the pusher head 113 can be controlled to rotate upwards, so that the second end of the pusher head 113 is higher than the material on the filter cloth 71. This prevents the pusher head 113 from scraping against the material below the material spreading body 11, avoids material sticking to the pusher head 113, improves the material spreading effect, and also helps to increase the retraction speed of the material spreading body 11 and increase the spreading rate.

[0127] Preferably, in this embodiment, the pusher head 113 includes a first position that rotates upward to the upper limit and a second position that rotates downward to the lower limit. When the pusher head 113 is in the first position and the second position, the height difference between the second end of the pusher head 113 is greater than the thickness of the material laid on the filter cloth.

[0128] Preferably, an elastic element is provided between the pusher head 113 and the spreading body 11. The elastic element drives the pusher head 113 to rotate to a first position. During the forward feeding of the spreading body 11, the reaction force exerted by the filter cloth 71 on the pusher head 113 is greater than the elastic force of the elastic element. Driven by the reaction force of the filter cloth 71, the pusher head 113 rotates to a second position. When the pusher head 113 rotates to the first position, the height of the axis of the solid column 1134 is lower than the height of the rotation center of the pusher head 113, thereby ensuring that the pusher head 113 can smoothly rotate to the second position under the reaction force of the filter cloth 71.

[0129] like Figure 9 and Figure 10As shown, in some specific embodiments, the rotation of the pusher head 113 can be limited by the front end face of the spreading body 11. Specifically, the rotating shaft can be positioned between the middle of the front end face of the spreading body 11 and the pusher head 113. A gap is provided between the pusher head 113 and the spreading body 11 for the pusher head 113 to rotate. When the pusher head 113 rotates to the first position, the upper end of the side of the pusher head 113 closest to the spreading body 11 abuts against the front end of the spreading body 11. When the pusher head 113 rotates to the second position, the lower end of the side of the pusher head 113 closest to the spreading body 11 abuts against the front end of the spreading body 11. Preferably, in this embodiment, the upper edge of the front end of the spreading body 11 and / or the upper edge of the first end of the pusher head are provided with a rounded chamfer to avoid scratching the filter cloth.

[0130] In this embodiment, the elastic element used to drive the pusher head 113 to rotate to the first position can be a torsion spring.

[0131] Preferably, the top of the working end of the first pressing assembly 5 is substantially flush with the bottom of the second end of the pushing head 113, thereby ensuring that the filter cloth 71 below the material spreading body 11 is substantially horizontal. Specifically, when the working end of the first 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 pressing assembly 5 is slightly lower than the bottom of the second end of the pushing head 113, allowing the pushing head 113 to pass smoothly.

[0132] Preferably, the height difference between the bottom of the second end of the pusher head 113 and the top of the working end of the first pressing assembly 5 is greater than or equal to the thickness of the filter cloth 71.

[0133] Preferably, the material spreading opening 1121 is located at the bottom of the material spreading body 11 and near the front end of the material spreading body 11, that is, the material spreading opening 1121 is located near the fabric pushing head 113.

[0134] Preferably, the material spreading body 11 sprays material onto the filter cloth 71 during the feeding process and stops spraying material onto the filter cloth 71 during the retraction process. Preferably, the retraction speed of the material spreading body 11 is greater than or equal to the feeding speed of the material spreading body 11. Preferably, in this embodiment, the material spreading body 11 extends in a horizontal direction.

[0135] The second end of the pusher head 113 has a notch in the middle, which is adapted to the shape of the working end of the second pressing assembly located on the side of the filter cylinder 2 away from the pusher head. The working end of the second pressing assembly passes through to press the filter cloth 71 covered on the second end of the pusher head 113 onto the filter cylinder 2.

[0136] Example 3

[0137] Based on Embodiment 1 and Embodiment 2, as Figures 1 to 14 As shown in the embodiment of the present invention, the installation structure of a cloth-pushing and spreading device 1 in a dewatering device for water-containing materials (which can be a sludge dewatering device) is further described. The dewatering device for water-containing materials includes a frame 4 and a cloth-pushing and spreading device 1 mounted on the frame 4. The cloth-pushing and spreading device 1 includes a base 12 and a spreading body 11 mounted on the base 12. The base 12 is mounted on the frame 4 via a first guide assembly 17, and the spreading body 11 is mounted on the base 12 via a second guide assembly 18. One end of a driving device 13 is connected to the base 12, and the other end is connected to the spreading body 11.

[0138] Preferably, the extension direction of the first guide component 17 is parallel to the extension direction of the second guide component 18. During the movement of the base 12 along the first guide component 17, the front end of the pusher body of the pusher device 1 and the first side of the filter cylinder 2 approach each other and remain aligned.

[0139] In this embodiment, the first guide component 17 and the second guide component 18 can be either a sliding guide rail structure or a rolling guide rail structure. The second guide component 18 is a sliding guide rail structure, which is disposed on one or both sides of the feeding direction of the material spreading body 11, and includes a second track 181 and a slider 182 sleeved on the second track 181.

[0140] In this embodiment, the second track 181 is disposed on one or both sides of the feeding direction of the material spreading body 11, and the slider 182 is disposed on the base 12 corresponding to the second track 181; or, the second track 181 is disposed on the base 12 on one or both sides of the feeding direction of the material spreading body 11, and the slider 182 is disposed on the material spreading body 11 corresponding to the second track 181; or, the second track 181 is disposed on one side of the feeding direction of the material spreading body 11, and the slider 182 is disposed on the other side of the feeding direction of the material spreading body 11, and the base 12 is provided with slider 182 and second track 181 respectively corresponding to and cooperating with the second track 181 and slider 182 on the material spreading body 11. Preferably, in this embodiment, the sliding guide rail structure is provided in two sets, respectively disposed between the left and right sides of the material spreading body 11 and the top of the base 12.

[0141] Specifically, in this embodiment, the sliding guide rail structure includes a second track 181 and a slider 182 mounted on the second track 181 and sliding back and forth along the second track 181. The second track 181 is disposed on the base 12, and the slider 182 is disposed on the material spreading body 11.

[0142] Specifically, such as Figure 4 and Figure 5As shown, in this embodiment, the extension length of the base 12 along the feed direction perpendicular to the material spreading body 11 is greater than the extension length of the material spreading body 11 along the feed direction perpendicular to the material spreading body 11. The first track 171 is installed on the top of the base 12, and two first tracks 171 are respectively arranged on both sides of the material spreading body 11. Outwardly extending sliders 182 are respectively provided on both sides of the material spreading body 11, and the sliders 182 are respectively fitted onto the corresponding first tracks 171. Through the above arrangement, a high degree of parallelism can be maintained between the material spreading body 11 and the base 12 at all times, preventing the front end of the material spreading body 11 from tilting downwards during the forward feeding process.

[0143] In this embodiment, the feeding direction of the material laying body 11 is the extending direction of the second guide component 18.

[0144] Preferably, in this embodiment, the material spreading body 11 extends horizontally, the top surface of the base 12 is set as a horizontal plane, and the top surfaces of the material spreading body 11 and the base 12 are close to each other. This improves the structural compactness of the material spreading device 1. Arranging the sliding guide rail structure between the left and right sides of the material spreading body 11 and the base 12 facilitates the fit between the material spreading body 11 and the base 12.

[0145] In this embodiment, the fixed end of the driving device 13 is disposed on the base 12, and the movable end is connected to the slider 182.

[0146] In some specific embodiments, the housing 111 of the material body 11 is configured as a cuboid structure, the slider 182 extends outward from the left and right side walls of the housing 111, the second track 181 is configured as a column, 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.

[0147] The drive device 13 is provided with two sets of parallel to the extension direction of the sliding guide rail structure. The two sets of drive devices 13 operate synchronously. The fixed end of the drive device 13 is set on the base 12, and the movable ends of the two drive devices 13 are respectively connected to the two sliders 182.

[0148] Preferably, the fixed end of the driving device 13 is disposed 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 part 183 protruding in a direction away from the material spreading body 11, and the movable end of the driving device 13 is connected to the first driving part 183.

[0149] The drive device 13 can be any one or a combination of two or more of the following: hydraulic cylinder, pneumatic cylinder, and linear motor.

[0150] In some specific embodiments, the first guide component 17 is a rolling guide rail structure, which includes a first track 171 and a roller 172 adapted to the first track 171.

[0151] Specifically, such as Figure 13 and Figure 14 As shown, in this embodiment, the first track 171 is mounted on the frame 4, and the top of the first track 171 is provided with a groove 1711. The roller 172 is mounted on the bottom of the base 12 through a rotating shaft. The roller 172 is disposed in the groove 1711 of the first track 171, and the peripheral wall of the roller 172 abuts against the inner wall of the groove 1711. The groove 1711 limits the roller 172 within the groove 1711.

[0152] In some possible embodiments, the cross-sectional shape of the bottom of the groove 1711 is the same as the cross-sectional shape of the outer peripheral wall of the roller 172.

[0153] In some possible embodiments, the cross-sectional shape of the outer peripheral wall of the roller 172 is the same as the cross-sectional shape of the groove 1711.

[0154] In some specific embodiments, the bottom of the groove 1711 is set to be planar, or it is set to be convex upward in the middle along the length direction of the groove 1711, or it is set to be concave downward in the middle along the length direction of the groove 1711. The outer peripheral wall of the roller 172 fits against the bottom of the groove 1711, and the groove wall of the groove 1711 extends upward and outward at an angle to enhance the limiting effect on the roller 172.

[0155] Preferably, in this embodiment, the rolling guide structure has at least two sets arranged at intervals along its extension direction perpendicular to it, so as to ensure the stability of the support for the base 12.

[0156] Preferably, in this embodiment, the rolling guide rail structure is provided in two sets, which are respectively located on the left and right sides of the bottom of the base 12 and between the base 12 and the frame 4. Each set of rolling guide rail structure is provided with at least two rollers 172 arranged at intervals along the extension direction of the first track 171, so as to further improve the support stability of the base 12.

[0157] In this embodiment, the filter cylinder 2 is disposed on the extension path of the first guide component 17 and spaced apart from the fabric spreading device 1; the two ends of the first track 171 are provided with limiting parts 1712 for limiting the roller 172, and the distance between the roller 172 and the limiting part 1712 at the front end of the first track 171 is less than or equal to the distance between the spreading body 11 and the filter cylinder 2.

[0158] Specifically, when the roller 172 abuts against the limiting part 1712 at the front end of the first track 171, the front end of the material spreading body 11 on the base 12 is aligned with the filter cylinder 2, so that the extension path of the second guide component 18 corresponds to the filter cylinder 2, and the front end of the material spreading body 11 extends to align with the outer edge of the first side of the filter cylinder 2 at most.

[0159] Preferably, in this embodiment, when the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171, the fabric spreading device 1 will clear at least part of the space above the discharge collection hopper 3.

[0160] Preferably, in this embodiment, when the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171, the front end of the base 12 corresponds to the upper edge of the side of the discharge collection hopper 3 away from the filter cylinder 2.

[0161] In this embodiment, when each group of first guide components 17 is provided with multiple rollers 172, the rollers 172 abut against the limiting part 1712 at the front end of the first track 171. Specifically, the roller 172 at the front end abuts against the limiting part 1712 at the front end of the first track 171, and the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171. Specifically, the roller 172 at the rear end abuts against the limiting part 1712 at the rear end of the first track 171.

[0162] In this embodiment, a front drive device 14 parallel to the extension direction of the rolling guide rail structure is provided between the frame 4 and the base 12. The front drive device 14 is used to drive the base 12 to reciprocate, that is, the front drive device 14 is used to drive the entire fabric pushing and spreading device 1 to reciprocate along the rolling guide rail structure.

[0163] In this embodiment, the fixed end of the front drive device 14 is mounted on the frame 4, and the movable end is connected to the base 12.

[0164] In some preferred embodiments, two sets of front drive devices 14 are provided, and the two sets of front drive devices 14 operate synchronously. The two sets of front drive devices 14 are respectively located on the left and right sides of the base 12 and between the base 12 and the frame 4. This ensures that both sides of the base 12 can be subjected to force synchronously, thus ensuring the smooth operation of the base 12.

[0165] 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 an outwardly extending second drive part 121, and the movable end of the front drive device 14 is connected to the second drive part 121.

[0166] Preferably, in this embodiment, the front drive device 14 and the first track 171 are arranged close to each other and side by side.

[0167] In this embodiment, the front drive device 14 can be any one or a combination of two or more of the following: hydraulic cylinder, air cylinder, and linear motor.

[0168] Preferably, in this embodiment, the extension direction of the first guide component 17 is parallel to the extension direction of the second guide component 18, and during the movement of the base 12 and the material spreading body 11, the front end of the material spreading body 11 is always aligned with the first side of the filter cylinder 2.

[0169] In some specific embodiments, a material spreading pipe 112 is provided inside the material spreading body 11, and a material conveying pipe 15 communicating with the material spreading pipe 112 is provided outside the material spreading body 11. The material conveying pipe 15 is connected to the material spreading pipe 112 and is used to convey materials to the material spreading body 11. In order to accommodate the reciprocating motion of the material spreading body 11, the material conveying pipe 15 is generally set as a flexible hose. By setting the material conveying pipe as a flexible hose, the material conveying pipe can move forward and backward with the base and the material spreading body, without the need to install an additional pipe shaft with a steering function like a rigid pipe. This greatly reduces the complexity of the device and improves its durability.

[0170] In this embodiment, a clearance opening is provided at the rear end of the base 12 corresponding to the material conveying pipe 15 for avoiding the material conveying pipe 15. In this embodiment, the material spreading body 11 includes a housing 111 and a material spreading pipe 112 installed in the housing 111. The rear end of the material spreading pipe 112 is connected to the rear side wall of the housing 111. The material spreading pipe 112 is provided with a plurality of pipes arranged at intervals along the feeding direction perpendicular to the material spreading body 11, and each material spreading pipe 112 is connected to a material conveying pipe 15.

[0171] The clearance opening is located at the rear end of the base 12, corresponding to the material conveying pipe 15. The extension length of the clearance opening along the feed direction perpendicular to the material spreading body 11 is greater than or equal to the layout range of the material conveying pipe 15 at the rear end of the material spreading body 11. By setting the clearance opening, the smoothness of the reciprocating movement of the material spreading body 11 can be further ensured.

[0172] In this embodiment, a method for laying materials in the above-mentioned dewatering equipment for water-containing materials is also provided. When laying materials, the material laying device 1 is first controlled to move along the first guide component 17 to the edge near the top of the filter cylinder 2; then the material laying body 11 is driven to reciprocate along the second guide component 18 above the filter cylinder 2, so that the filter cloth 71 is laid in layers in the filter cylinder 2 and the material is sprayed onto the filter cloth 71.

[0173] Specifically, when material needs to be spread onto the filter cloth 71, the front drive device 14 first drives the entire cloth spreading device 1 forward, bringing it close to the filter cylinder 2. The front end of the spreading body 11 on the base 12 corresponds directly to the first side of the filter cylinder 2, that is, the front end of the spreading body 11 is parallel to the first side of the filter cylinder 2, and the front end of the spreading body 11 corresponds to the middle of the first side of the filter cylinder 2. At this time, the spreading body 11 is in the retracted position, and the drive device 13 of the spreading body 11 is in the initial position. Then, the drive device 13 of the spreading body 11 drives the spreading body 11 to reciprocate between the first and second sides of the filter cylinder 2, causing the filter cloth 71 to be layered within the filter cylinder 2, and spreading the material between adjacent layers of filter cloth 71 during this process.

[0174] Preferably, in this embodiment, when the roller 172 abuts against the limiting part 1712 at the rear end of the first track 171, the pusher head 113 is placed outside the base 12, which can ensure that the material spreading body 11 and the base 12 are compact, while avoiding interference between the pusher head 113 and the base 12.

[0175] Example 4

[0176] Based on Embodiment 2, this embodiment of the invention further describes the structure of the material spreading body of a material spreading device 1 for a dewatering equipment for water-containing materials, such as... Figures 1 to 14 As shown.

[0177] The fabric spreading device 1 includes a spreading body 11, which includes a housing 111 and a spreading pipe 112 installed inside the housing 111. The bottom of the housing 111 is provided with an opening, and the spreading pipe 112 is installed inside the housing 111. The spreading port 1121 of the spreading pipe 112 is located inside the opening.

[0178] In some specific embodiments, the material-laying opening 1121 extends vertically downward from the opening, at least to the level of the bottom of the opening. Preferably, the material-laying opening 1121 extends at least partially below the opening.

[0179] In this embodiment, the bottom wall of the housing 111 can extend horizontally, or it can extend upward or downward along the feeding direction of the material spreading body 11. The opening extends horizontally on the bottom wall of the housing 111 in a direction perpendicular to the feeding direction of the material spreading body 11. The material spreading tube 112 extends inside the housing 111 in a direction parallel to the bottom wall of the housing 111. The material spreading port 1121 of the material spreading tube 112 extends vertically downward from the opening, passing through the opening and extending below the opening.

[0180] Preferably, in this embodiment, the material spreading pipe 112 is provided with multiple pipes arranged along the feeding direction perpendicular to the material spreading body 11. By providing multiple material spreading pipes 112 for spreading materials, it is beneficial to improve the uniformity of material spreading.

[0181] The opening is a strip-shaped opening extending perpendicular to the feeding direction of the material spreading body 11. The material spreading ports 1121 of each material spreading tube 112 are arranged along the length of the opening. The width of the material spreading ports 1121 of each material spreading tube 112 along the feeding direction of the material spreading body 11 is the same, and the outlets of each material spreading tube 112 are aligned with each other along the feeding direction perpendicular to the feeding direction of the material spreading body 11. Preferably, in this embodiment, each material spreading tube 112 is of the same type, and the shape of the outlet of each material spreading tube 112 is the same.

[0182] Preferably, in this embodiment, the material spreading opening 1121 extends in a horizontal direction.

[0183] Preferably, in this embodiment, the interval between two adjacent material spreading ports 1121 is very small. Specifically, the material spreading ports 1121 of two adjacent material spreading ports 1121 are close to each other, and the wall thickness between two adjacent material spreading ports 1121 is small. Specifically, the wall thickness at both ends of the material spreading port 1121 of the material spreading pipe 112 along the feed direction perpendicular to the material spreading body 11 is less than or equal to the closed thickness at both ends along the feed direction of the material spreading body 11.

[0184] In some possible embodiments, the spreading pipe 112 includes an input section 1122, a variable diameter section 1123, and an output section 1124 arranged sequentially along the feeding direction of the spreading body 11. The output section 1124 is flat, and the spreading port 1121 extends downward from the end of the output section 1124. Through this arrangement, the material conveyed in the spreading pipe 112 gradually extends in a direction perpendicular to the feeding direction of the spreading body 11 during the conveying process, and gradually becomes thinner. That is, under the action of the pipe wall of the spreading pipe 112, the material gradually becomes thinner and wider, enabling the spreading port 1121 to ultimately output a thin layer of material, allowing the material to be evenly spread on the filter cloth 71.

[0185] Preferably, the extension length of the opening is less than or equal to the width of the filter cloth 71.

[0186] More preferably, the output sections 1124 of two adjacent laying tubes 112 are bonded together, and the total extension length of the output sections 1124 of each laying tube 112 along the feed direction perpendicular to the laying body 11 is less than or equal to the width of the filter cloth 71.

[0187] Preferably, the extension direction of the output segment 1124 is parallel to the bottom wall of the housing 111.

[0188] In some preferred embodiments, the spreading pipe 112 includes a variable diameter section 1123 and an output section 1124, each having a channel. The second end of the output section 1124 is provided with a spreading port 1121. The second end of the variable diameter section 1123 is connected to the first end of the output section 1124, so that the channels of the variable diameter section 1123 and the output section 1124 are connected. The cross-section of the channel of the output section 1124 is the same in the direction perpendicular to the material's forward movement, and the bottom surface of the output section 1124 that carries the material is a plane. The cross-sectional area of ​​the channel of the variable diameter section 1123 at the second end is smaller than that at the first end, and the vertical cross-section of the channel of the output section 1124 is the same as the vertical cross-section of the channel of the variable diameter section 1123 at the second end.

[0189] The first end of the variable diameter section 1123 is connected to the channel of the input section 1122 used for conveying materials. Material from the input section 1122 enters the output section 1124 from the end of the variable diameter section 1123 with the larger vertical cross-sectional area. Due to the change in the vertical cross-sectional area of ​​the channel in the output section 1124, pressure is applied within the channel, resulting in a wider distribution of material in the horizontal direction perpendicular to the material flow (i.e., the width of the channel). After flowing into the output section 1124 from the end of the variable diameter section 1123 with the smaller vertical cross-sectional area, the material further expands horizontally within the channel of the output section 1124, potentially occupying the entire channel. It then flows out evenly from the material outlet 1121 of the output section 1124 and is laid on the filter cloth.

[0190] In some embodiments, in the horizontal direction perpendicular to the material flow direction, the width of the second end of the variable diameter section 1123 channel is greater than the width of the first end. In the vertical direction perpendicular to the material flow direction, the height of the second end of the variable diameter section 1123 channel is less than the height of the first end.

[0191] Alternatively, the width of the variable diameter section 1123 gradually increases from the first end to the second end, while the height of the variable diameter section 1123 gradually decreases from the first end to the second end.

[0192] With the setting of the variable diameter section 1123 channel structure, the material enters the channel through the first end of the variable diameter section 1123. During the forward movement, the pressure gradually increases, and the material occupies the variable diameter section 1123 from the center position to both sides in a continuous dispersion.

[0193] Alternatively, the vertical cross-section of the channel at the first end of the variable diameter section 1123 can be circular, near-circular, polygonal, elliptical, or other shapes. Considering ease of processing and assembly, a more preferred option is that the vertical cross-section of the channel at the first end of the variable diameter section 1123 can be circular or near-circular.

[0194] The variable diameter section 1123 has a polygonal width in the vertical cross-section at its second end, with the width direction being a straight line. Preferably, it can be a polygon with parallel sides, such as a parallelogram or rectangle.

[0195] In some implementations, the cross-sectional area of ​​the variable diameter section 1123 at the second end is 0.7-1.0 times that of the cross-sectional area at the first end.

[0196] In some embodiments, the length of the variable diameter section 1123 in the material flow direction is in a ratio of 1:0.6 to 1:3 to the width of the channel at the second end of the variable diameter section 1123.

[0197] The width of the second end of the variable diameter section 1123 refers to the length of the output section 1124 channel in the horizontal direction perpendicular to the material flow direction. The length of the variable diameter section 1123 refers to the length between the first end and the second end.

[0198] In some embodiments, the ratio of the length L1 of the variable diameter section 1123 to the length L2 of the output section 1124 in the material flow direction is 1:0.5-1:8.

[0199] The vertical cross-section of the output segment channel is a polygon with a straight line in the width direction. Preferably, it can be a polygon with parallel sides at the top and bottom; more preferably, the structures on both sides between the top and bottom surfaces of the output segment channel are symmetrically arranged. For example, the vertical cross-section of the output segment channel can be rectangular, etc. That is, the shape of the vertical cross-section of the output segment channel and the variable diameter segment channel at the second end is the same.

[0200] The material discharged from the second end of the variable diameter section 1123 flows into the output section 1124 channel in the width direction on both sides towards the side walls. The material can be continuously dispersed throughout the bottom of the output section 1124 channel and flows out evenly through the outlet of the output section 1124.

[0201] The upper end of the material outlet 1121 is configured as an arc shape that smoothly transitions to the output section, and the material outlet 1121 faces downward. The lower end of the material outlet 1121 has the same vertical cross-section as the vertical cross-section of the output section channel, preferably a rectangle.

[0202] In this embodiment, the variable diameter section 1123 and the output section 1124 can be integrated as one unit or separated as two separate units.

[0203] Through the material spreading pipe 112 of this embodiment, the material flowing in from the first end of the variable diameter section 1123 passes through the channels of the first and second components and can flow out evenly and continuously through the material spreading port 1121, distributing evenly and continuously on the filter cloth. The thickness of the material spread on the filter cloth is relatively uniform, or the surface of the material is relatively flat. No additional steps or components are needed to level the spread material. Therefore, while saving process steps or reducing components, a good solid-liquid separation effect can be achieved.

[0204] In some specific embodiments, the material spreading tube 112 is installed on the rear side wall of the housing 111; the opening is located on the bottom wall of the housing 111, near the front side wall of the housing 111. In this embodiment, the housing is preferably a horizontally extending cuboid structure, but it can also be other structures with cavities, with the material spreading tube 112 placed inside the cavity of the housing. Specifically, the material spreading tube 112 can be welded to the housing 111, or the connection between the material spreading tube 112 and the housing 111 can be detachable, as long as it is ensured that there is no relative movement between the material spreading tube 112 and the housing 111 during the feeding process of the material spreading body 11.

[0205] Preferably, in this embodiment, an installation joint 16 is provided on the rear side wall of the housing 111. The installation joint 16 is fixed on the rear side wall of the housing 111. The installation joint 16 extends at least partially into the housing 111. The input section 1122 of the material laying pipe 112 is sealed to the installation joint 16.

[0206] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cloth pressing assembly for a dewatering device for moisture-containing materials, characterized in that, include: Fixing part (61); The movable part (62) includes a rotating shaft (621) that is rotatably engaged with the fixed part (61), and a pressure rod (622) provided on the rotating shaft (621). The pressure rod (622) rotates with the rotating shaft (621) to press / release the filter cloth (71). A bearing surface is provided below the rotating shaft (621), and the pressing rod (622) presses the filter cloth (71) tightly onto the bearing surface; The fabric pressing rod (622) includes: The neck (6221) extends from the outer peripheral wall of the rotation axis (621) in a direction perpendicular to the rotation axis (621); The head (6222) is located at one end of the neck (6221) away from the rotating shaft (621), and the side of the head (6222) facing the bearing surface protrudes towards the bearing surface relative to the neck (6221); The side of the head (6222) facing the bearing surface is a plane that extends obliquely away from the bearing surface in a direction away from the rotation axis (621). The angle between this plane and the neck (6221) is equal to the angle between the neck (6221) and the bearing surface when the pressure rod presses the filter cloth (71).

2. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 1, characterized in that, The pressure bar (622) is provided with at least two that are axially spaced along the rotation axis (621).

3. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 1, characterized in that, The plane of the head (6222) facing the bearing surface and the plane of the head (6222) away from the bearing surface are smoothly connected at the end of the head (6222).

4. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 3, characterized in that, The end of the head has a certain thickness in the vertical direction perpendicular to the pressure bar, and a chamfer is provided between the plane of the pressure bar facing the bearing surface and the end face of the head away from the rotation axis; or, the end of the head away from the rotation axis is set as an arc.

5. The cloth pressing assembly of the dewatering equipment for water-containing materials according to any one of claims 1 to 4, characterized in that, The movable part (62) is configured with a first position in which the pressure bar (622) rotates in the first direction and presses the filter cloth (71) onto the bearing surface, and a second position in which the pressure bar (622) rotates in the second direction and forms a certain interval with the bearing surface; This interval allows the front end of the fabric spreading device (1) along the feeding direction to extend at least partially between the bearing surface and the pressing rod (622).

6. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 5, characterized in that, The fabric spreading device (1) has a downwardly inclined fabric spreading head (113) at the front end along the feeding direction. The first end of the fabric spreading head (113) is connected to the spreading body (11). When the fabric spreading head (113) comes into contact with the filter cloth (71), the filter cloth (71) covers the second end of the fabric spreading head (113) opposite to the first end. The second end of the pusher head (113) is provided with a notch (1135) corresponding to the pressure rod (622). The notch (1135) passes through the pusher head (113) in a vertical direction perpendicular to the first end to the second end. The opening of the notch (1135) faces away from the first end of the pusher head (113). The end of the pressure rod (622) away from the rotating shaft (621) passes through the notch (1135) from top to bottom, pressing the filter cloth (71) covered on the second end of the pusher head (113) onto the filter cylinder (2).

7. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 6, characterized in that, The second end of the pusher head (113) is lower than the spreading port (1121) at the bottom of the pusher spreading device (1) at least when the pusher head (113) comes into contact with the filter cloth (71).

8. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 7, characterized in that, In the direction from the first end to the second end of the pusher head (113), at least the top of the pusher head (113) is set as a downward sloping plane.

9. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 8, characterized in that, From the first end to the second end of the pusher head (113), the thickness of the pusher head (113) gradually decreases in the direction perpendicular to the first end to the second end.

10. The cloth pressing assembly of the dewatering equipment for water-containing materials according to any one of claims 1 to 4, characterized in that, A drive rod (623) is provided on the rotating shaft (621) with an extension direction opposite to that of the press rod (622), and a drive component is provided on the fixing part (61) that is connected to the drive rod (623) for transmission.

11. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 10, characterized in that, The driving component is a telescopic device; the two ends of the telescopic device are rotatably engaged with the fixed part (61) and the driving rod (623) respectively; or, the telescopic device is fixedly installed on the fixed part (61), the working end of the telescopic device is provided with a strip hole, the end of the driving rod (623) is provided with a rotating shaft, the rotating shaft is installed in the strip hole, and the length direction of the strip hole is perpendicular to the telescopic direction of the telescopic device.

12. The cloth pressing assembly of the dewatering equipment for water-containing materials according to claim 11, characterized in that, The fixing part (61) includes: The first support base (611) extends vertically along the length direction perpendicular to the filter cloth (71), and the top of the first support base (611) is provided with two spaced bushings; the two ends of the rotating shaft (621) are respectively installed in the two bushings; The second support (612) is vertically disposed on the side of the first support (611) away from the bearing surface, and the telescopic device is disposed on the second support (612).

13. A dewatering device for moisture-containing materials, characterized in that, It includes a cloth-pushing and spreading device (1) and a filter cylinder (2), wherein the filter cylinder (2) is provided with a cloth-pressing component of the water-containing material dewatering device according to any one of claims 1 to 12 at the second side away from the cloth-pushing and spreading device (1).

14. The dewatering equipment for water-containing materials according to claim 13, characterized in that, Before the cloth feeding device (1) feeds from the first side opposite to the second side of the filter cylinder (2) to the second side, the end of the filter cloth (71) is fixed on the first side; During the process of feeding the cloth-pushing and material-laying device (1) to the second side of the filter cylinder (2), it comes into contact with the filter cloth (71), lays the filter cloth (71), and sprays material onto the filter cloth (71); When the cloth pushing and spreading device (1) reaches the second side, the cloth pressing assembly presses the filter cloth (71) onto the filter cylinder (2), and the cloth pushing and spreading device (1) returns to its original position.

Images