De-watering apparatus for a bed of stacked layers of material and method of laying material

Abstract

This invention provides a dewatering device and method for layered stacked material. The dewatering device includes: a filter cylinder; a material pushing and laying device disposed on one side of the filter cylinder, reciprocating horizontally above the filter cylinder; and a material pressing assembly, including a first material pressing assembly disposed on a first side of the top of the filter cylinder and a second material pressing assembly disposed on a second side opposite to the first side; the first material pressing assembly is disposed at the end of the first side; the second material pressing assembly is disposed in the middle of the outer wall of the second side; the first material pressing assembly includes a pressure rod disposed parallel to the first side, and a drive transmission device for driving the pressure rod to move horizontally along the first side and vertically relative to the first side; and limiting members extending vertically are respectively disposed on both sides along the length direction of the pressure rod, the limiting members being in contact with the two sides of the pressure rod. Through the above configuration, the installation height of the material pressing assembly is reduced, facilitating installation and maintenance by operators.

Description

Technical Field

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

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

[0003] There are various methods for solid-liquid separation, including pressing, extrusion, and centrifugation, and the corresponding equipment for solid-liquid separation is also diverse. Among them, the stacked extrusion device is widely used due to its advantages of high extrusion pressure, high extrusion limit, and long extrusion time, resulting in good dewatering effect. The filter cloth in the stacked extrusion device is generally an ultra-long continuous filter cloth. During operation, multiple layers of filter cloth need to be stacked and spread, and sludge needs to be evenly spread between the filter cloths. During the stacking and spreading of filter cloth, a cloth pressing assembly is needed to fix the filter cloth, mainly consisting of two sets of cloth pressing assemblies, one at the front and one at the back. During the spreading process, the filter cloth is fixed by the two sets of cloth pressing assemblies. Specifically, the front pressing cloth assembly first presses the near end of the filter cloth tightly, and the discharge port of the sludge spreading mechanism pushes the filter cloth forward. When the sludge spreading mechanism reaches the farthest limit position, the rear pressing cloth assembly presses down on the far end of the filter cloth, and then the sludge spreading mechanism retreats. When the discharge port of the sludge spreading mechanism exits the filter cylinder, the front pressing cloth assembly is pulled out from both sides of the filter cloth and then pressed onto the next layer of filter cloth.

[0004] In existing stacking and extrusion devices, the front and rear pressure cloth assemblies are 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 front pressure rod lifting frame of the front pressure rod mechanism is driven by the front pressure rod lifting mechanism to move up and down on the front pressure rod fixed frame. The front pressure rod guide device is installed on both sides of the front pressure rod fixed frame. The front pressure rod horizontal telescopic mechanism is fixed on the front pressure rod lifting frame. A horizontal pressure rod is installed on the outside of the front pressure rod horizontal telescopic mechanism. The horizontal pressure rod is driven by the front pressure rod horizontal telescopic mechanism to move laterally relative to the front pressure rod lifting frame. 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 fixed frame. The rear pressure rod guide device is installed on both sides of the rear pressure rod lifting frame.

[0005] However, in the above configuration, the front and rear pressure cloth assemblies are located above the filter cylinder, which is not conducive to maintenance and will occupy a large space above the filter cylinder, and is prone to interference with other devices above the filter cylinder (such as extrusion equipment).

[0006] Therefore, designing a dewatering device with layered stacking material that is easy to maintain and avoids interference between the pressing assembly and other devices (such as extrusion equipment) above the filter cylinder has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] This invention provides a dewatering device for layered stacked materials. One objective of this invention is to solve the problem in the prior art that the pressing assembly is located above the filter cylinder, which is not conducive to maintenance and is prone to interference with other devices (such as the extrusion unit) above the filter cylinder.

[0008] Another objective of this invention is that, through the coordinated operation of the cloth pressing assembly and the cloth pushing and spreading device structure located around the filter cylinder, the overall structure of the dewatering equipment is compact, and the spreading efficiency of water-containing materials in the filter cylinder is improved.

[0009] Another objective of this invention is to solve the problems of high cost and complex control caused by the need to use two power sources to drive a first pressing fabric assembly in the prior art.

[0010] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0011] A dewatering device for layered stacked materials includes: a filter cylinder; a fabric pushing and laying device disposed on one side of the filter cylinder, reciprocating horizontally above the filter cylinder; a fabric pressing assembly including a first fabric pressing assembly disposed on a first side of the top of the filter cylinder and a second fabric pressing assembly disposed on a second side opposite to the first side, the first side and the second side opposite to it being arranged along the feeding direction of the fabric pushing and laying device; the first fabric pressing assembly being disposed at the end of the first side; the second fabric pressing assembly being disposed in the middle of the outer wall of the second side; the first fabric pressing assembly including a pressing rod disposed parallel to the first side, and a drive transmission device for driving the pressing rod to move horizontally along the first side and to move vertically relative to the first side; and limiting members extending vertically are respectively disposed on both sides along the length direction of the pressing rod, the limiting members being in contact with both sides of the pressing rod.

[0012] Furthermore, the first pressing cloth assembly is arranged in pairs at both ends of the first side; the second pressing cloth assembly is arranged in the middle of the outer wall of the second side, including a fixed part and a movable part that rotates with the fixed part. The movable part includes a pressing cloth rod, which rotates with the rotation axis of the movable part to press / release the filter cloth.

[0013] Furthermore, the drive transmission device is located on the outer side of the upper edge of the filter cylinder, including a support base extending in a direction parallel to the first side, a connecting rod hinged at one end to the support base, a connecting rod hinged at the other end of the connecting rod, and a drive member located on the side of the connecting rod away from the filter cylinder; the end of the pressure rod away from the filter cylinder is connected to the drive member and can slide on the drive member in a vertical direction perpendicular to the pressure rod; the connecting rod is connected to the middle of the pressure rod and can slide along the length of the pressure rod; a power source that can extend and retract horizontally along the first side drives the drive member to move horizontally, and during the process of the drive member driving the pressure rod to move horizontally, the pressure rod is driven to move up and down through the connecting rod and the connecting rod.

[0014] Furthermore, the driving component includes: a slide rail extending vertically, with a sliding sleeve fitted on the slide rail at the end of the pressure rod away from the filter cylinder; an abutment portion connected to the slide rail and disposed opposite to the side of the connecting rod away from the filter cylinder; during the movement of the driving component toward the filter cylinder, it is configured in a first working state in which the abutment portion is spaced apart from the connecting rod, and a second working state in which the abutment portion slides with the connecting rod and drives the connecting rod to rotate toward the filter cylinder.

[0015] Furthermore, a power storage structure is provided between the connecting rod and the support frame; during the process of the driving component moving towards the filter cylinder and driving the connecting rod to rotate towards the filter cylinder, the power storage structure stores power; during the process of the driving component moving away from the filter cylinder, the power storage structure releases power, driving the connecting rod to rotate away from the filter cylinder.

[0016] Furthermore, the limiting component is located at the end of the support base near the filter cylinder.

[0017] Furthermore, the rotating shaft is located on the outer side of the upper edge of the filter cylinder, higher than the top of the filter cylinder, and extends along the length of the second side; the pressing rod is located on the side of the rotating shaft close to the filter cylinder and extends in a direction perpendicular to the rotating shaft; a drive rod is provided on the side of the rotating shaft away from the filter cylinder, and the drive rod is connected to the drive component.

[0018] Furthermore, the front end of the fabric pushing and spreading device is provided with a fabric pushing head along the feeding direction; two fabric pressing rods correspond to the two ends extending along the length direction of the second side near the fabric pushing head; along the feeding direction of the fabric pushing and spreading device, the front end of the fabric pushing head is provided with notches corresponding to the fabric pressing rods; the notches penetrate the fabric pushing head vertically, and the end of the fabric pressing rod away from the rotating shaft passes through the notch from top to bottom, pressing the filter cloth covered on the fabric pushing head onto the second side.

[0019] Furthermore, the filter cylinder includes a hollow cubic cylinder body and a movable base plate located inside the cylinder body. A lifter is provided below the cylinder body, extending into the cylinder body to lift or lower the movable base plate. The top of the cylinder body is open, with the side of the cylinder body near the fabric spreading device forming the first side of the filter cylinder, and the side of the cylinder body away from the fabric spreading device forming the second side of the filter cylinder. The pressure rod of the first fabric pressing assembly corresponds vertically to the side of the first side of the filter cylinder near the opening at the top of the cylinder body.

[0020] The present invention also provides a method for laying the filter cloth in the above-mentioned dewatering device with layered and stacked materials, comprising: S1: a first pressing assembly presses the filter cloth tightly onto a first side; the movable bottom plate of the filter cylinder moves to be flush with the top of the filter cylinder, or the movable bottom plate moves to be lower than the top of the filter cylinder, and the gap between the movable bottom plate and the top of the filter cylinder is greater than or equal to the thickness of the material laid on the filter cloth; S2: a pushing and laying device feeds from the first side to the second side, pushes the filter cloth to be laid from the first side to the second side, and sprays material onto the filter cloth; S3: pushing the cloth... The material spreading device moves along the front end of the feed direction to above the second side, and the second pressing assembly presses the filter cloth onto the second side; S4: The material spreading device retracts from the second side, and during or after the retraction, the first pressing assembly resets; S5: When the material spreading device moves along the front end of the feed direction to outside the first side, the movable bottom plate of the filter cylinder moves downward by one stroke, causing the top layer of filter cloth wrapped with material to fall into the filter cylinder, and the first pressing assembly operates again to press the filter cloth at the first side; repeat steps S2 to S5.

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

[0022] 1. The present invention places the cloth pressing assembly on the periphery of the filter cylinder, which reduces the installation height of the cloth pressing assembly and makes it easier for operators to install and maintain the cloth pressing assembly. At the same time, the cloth pressing assembly does not occupy a large area of ​​the space above the filter cylinder, which can avoid the problem of interference between the cloth pressing assembly and other devices such as the extrusion equipment above the filter cylinder.

[0023] 2. In this invention, during the process of the driving component of the first pressing cloth assembly moving towards the filter cylinder, the driving component pushes the pressure rod to feed towards the filter cylinder. During the process of the driving component driving the connecting rod to rotate, the connecting rod drives the pressure rod to slide along the slide rail. The connecting rod can drive the pressure rod to press the filter cloth onto the filter cylinder. Thus, the pressure rod can be driven to feed and press down towards the filter cylinder by a single power source, reducing the power source used to drive the first pressing cloth assembly, which helps to reduce the cost of the equipment and simplifies the control system of the first pressing cloth assembly.

[0024] 3. In the process of the movable part of the second pressing component of the present invention driving the pressing rod to loosen the filter cloth, the end of the pressing rod moves upward and away from the filter cloth. In the process of the movable part driving the pressing rod to press the filter cloth, the end of the pressing rod moves downward and closer to the filter cylinder, instead of only driving the pressing rod to move up and down in the vertical direction. This allows the pressing rod to effectively avoid the front end of the feeding direction of the pushing and spreading device, which helps to shorten the stroke of the pressing rod in the pressing process. Attached Figure Description

[0025] 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:

[0026] Figure 1 This is a cross-sectional schematic diagram of the dewatering device for the interlayer stacked material in an embodiment of the present invention;

[0027] Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged view of point B in the middle;

[0028] Figure 3 This is a schematic diagram of the structure of the cloth-pushing and spreading device when it moves to the second side of the filter cylinder in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the installation structure of the fabric pressing assembly in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the first fabric pressing assembly when a connecting rod is provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the first fabric pressing assembly when two connecting rods are set in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the first pressure cloth assembly when the pressure bar is in the second position in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the first pressing assembly when the driving component switches to the second working state during the pressing process in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the first pressure cloth assembly when the pressure bar is in the first position in an embodiment of the present invention;

[0035] Figure 10This is a schematic diagram of the structure of the first pressing fabric assembly in the middle position during the retraction process in an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the structure when the movable part rotates to the second position in an embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram of the structure when the movable part rotates to the first position in an embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of the structure of the second pressing fabric assembly in an embodiment of the present invention;

[0039] Figure 14 This is a cross-sectional schematic diagram of the main body of the material in an embodiment of the present invention;

[0040] Figure 15 This is an embodiment of the present invention. Figure 14 Enlarged view of point A in the middle;

[0041] Figure 16 This is a schematic diagram of the structure when the fabric pusher is in the first position in an embodiment of the present invention;

[0042] Figure 17 This is a schematic diagram of the structure when the fabric pusher is in the second position in an embodiment of the present invention.

[0043] Description of main components in the diagram:

[0044] 1. Fabric spreading device; 11. Spreading body; 111. Shell; 112. Spreading pipe; 1121. Spreading port; 113. Fabric pushing head; 1133. Reinforcing plate; 1134. Solid column; 1135. Notch; 12. Base; 121. Second drive unit; 15. Conveying pipe; 2. Filter cylinder; 21. Cylinder body; 22. Movable base plate; 3. Discharge collection hopper; 4. Frame; 41. Guide roller; 5. First pressing assembly; 51. Pressing rod; 52. Drive transmission device; 521. Support frame; 5211. Support frame; 522. Connecting rod; 523. Connecting rod; 524. Drive component; 5 241. Abutting part; 525. Power storage structure; 53. Power source; 54. Guide assembly; 541. Slide rail; 542. Sliding sleeve; 55. Limiting component; 551. First limiting component; 552. Second limiting component; 55-1. First plate; 55-2. Second plate; 55-3. Reinforcing rib; 6. Second pressing assembly; 61. Fixing 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. Detailed Implementation

[0045] 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.

[0046] like Figures 1 to 17 As shown in the embodiment of the present invention, a dewatering device for layered stacked 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. During the laying process, the filter cloth 71 is fixed by two sets of cloth-pressing assemblies.

[0047] In some specific embodiments, the cloth spreading device 1 is configured to fold the filter cloth 71 back and forth between the first and second sides of the filter cylinder 2 and spray the material to be treated onto the filter cloth 71.

[0048] 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.

[0049] The dewatering equipment for layered stacked materials also includes a filter cloth unloading and unloading / rewinding device. The filter cloth unloading and unloading / rewinding device includes an unloading component for unloading the squeezed and dewatered dry material from the filter cloth 71, a filter cloth tidying component for leveling and cleaning the filter cloth 71 after removing the dry material, and a filter cloth unloading and rewinding component for winding up the filter cloth 71 and unloading the filter cloth.

[0050] The filter cloth winding and unwinding assembly includes a winding roller 7, on which the filter cloth 71 is wound into a roll. The winding roller 7, which houses the filter cloth 71, and the cloth spreading device 1 are located on the same side of the filter cylinder 2. The spreading opening of the cloth spreading device 1 is higher than the upper edge of the filter cylinder 2.

[0051] During the process of laying 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 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 filter cloth 71 is unwound from the rolling roller 7; when the front end of the cloth pushing and laying device 1 reaches the second side of the filter cylinder 2 along the feeding direction, the second 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 then retreats back to the outside of the first side of the filter cylinder 2.

[0052] 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 pressure rod of the first cloth pressing assembly 5 is pulled out from both sides of the filter cloth; 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 down onto the filter cylinder 2.

[0053] 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.

[0054] It also includes an extrusion device 8, which is located above the filter cylinder 2 and is used to extrude the material.

[0055] After extrusion, the cloth unloading process begins. The cloth unloading and unloading / rewinding device's winding roller 7 rotates under motor drive, moving the filter cloth 71 and retracting it. The extruded and dehydrated material, carried on the filter cloth 71, leaves the filter cylinder 2 and enters the cloth unloading and unloading / rewinding device. After being unloaded by the unloading assembly, the dehydrated material falls into the discharge collection hopper 3 below. The filter cloth 71 is then cleaned and flattened by the filter cloth finishing assembly and wound onto the winding roller 7.

[0056] The material to be processed is a solid-liquid mixture, such as a material containing water. There is no limit to the water content.

[0057] In this embodiment, the dewatering equipment for the interlayer stacked material is preferably used for solid-liquid separation of sludge with high water content.

[0058] In this embodiment, to ensure the material is properly encapsulated, the width of the filter cloth 71 is greater than the width of the internal space of the filter cylinder 2, and the width of the material spreading opening of the cloth spreading device 1 is less than or equal to the width of the internal space of the filter cylinder 2. After the cloth spreading device 1 lays the material on the filter cloth 71, the movable bottom plate of the filter cylinder 2 moves down, and the filter cloth 71 carrying the material falls into the filter cylinder 2. The sides of the filter cloth 71 are bent upwards under the obstruction of the filter cylinder 2, wrapping the material from both sides to prevent the material from flowing out from both sides of the filter cloth 71.

[0059] In some preferred embodiments, there is a certain gap between the pressing position of the first pressing cloth assembly 5 and the internal space of the filter cylinder 2. Thus, when the movable bottom plate of the filter cylinder 2 moves down, the portion of the filter cloth 71 that exceeds the internal space of the filter cylinder 2 bends upward under the obstruction of the first side of the filter cylinder 2, so that the side of the material that is close to the pushing cloth spreading device 1 is also wrapped by the filter cloth 71.

[0060] Example 1

[0061] In the existing technology, the pressing assembly is usually set above the filter cylinder and driven by a lifting mechanism. The installation position is high, which is not conducive to installation and maintenance, and it occupies a large space above the filter cylinder. It is also easy to interfere with other devices such as the pressing equipment above.

[0062] like Figures 1 to 17 As shown in the embodiment of the present invention, a dewatering device for interlayer stacked materials is introduced to solve the above-mentioned problems.

[0063] The dewatering equipment for layered stacked filter media includes a filter cylinder 2, a cloth pushing and laying device 1, a cloth pressing assembly, and a filter cloth feeding, unloading, and winding device. The filter cloth feeding, unloading, and winding device and the cloth pushing and laying device 1 are located on the same side of the filter cylinder 2 and supported by a frame 4. The filter cloth feeding, unloading, and winding device includes an unloading assembly, a filter cloth sorting assembly, and a filter cloth winding and unwinding assembly. The winding roller 7 of the filter cloth winding and unwinding assembly is mounted on the frame 4, and the filter cloth 71 is wound into rolls on the winding roller 7. The filter cloth handling assembly includes multiple guide rollers 41 disposed between the roll roller 7 and the filter cylinder 2. Both the guide rollers 41 and the roll roller 7 are rotatably mounted on the frame 4. The guide rollers 41 and the roll roller 7 are parallel and axially aligned. The filter cloth 71 sequentially passes over each guide roller 41, extending from above the push-and-lay device 1 to the front side of the push-and-lay device 1 along the feed direction. The pressing assembly presses the filter cloth 71 firmly onto the filter cylinder 2. The push-and-lay device 1 reciprocates horizontally above the filter cylinder 2, layering the filter cloth 71 within the filter cylinder 2 and spraying material onto the filter cloth 71.

[0064] like Figure 4 As shown, the fabric pressing assembly includes a first fabric pressing assembly 5 disposed on a first side of the top of the filter cylinder 2 and a second fabric pressing assembly 6 disposed on a second side opposite to the first side. The first and second sides are arranged along the feeding direction of the fabric spreading device 1. The first fabric pressing assembly 5 is disposed at the end of the first side, and the second fabric pressing assembly 6 is disposed in the middle of the outer wall of the second side, that is, in the middle of the side of the second side away from the first side. In other words, by placing the fabric pressing assembly on the periphery of the filter cylinder 2, the installation height of the fabric pressing assembly is reduced, making it easier for operators to install and maintain the fabric pressing assembly. At the same time, the fabric pressing assembly does not occupy a large area of ​​the space above the filter cylinder 2, thus avoiding interference between the fabric pressing assembly and other devices such as the extrusion device 8 above the filter cylinder 2.

[0065] In some specific embodiments, the first pressing cloth assembly 5 is arranged in pairs at both ends of the first side, including a pressing rod 51 arranged parallel to the first side, and a drive transmission device 52 for driving the pressing rod 51 to move horizontally along the first side and to move vertically relative to the first side. The second pressing cloth assembly 6 is isolated in the middle of the outer wall of the second side, including a fixed part 61 and a movable part 62 that rotatably engages with the fixed part 61. The movable part 62 includes a pressing cloth rod 622, which rotates with the rotation shaft 621 of the movable part 62 to press / release the filter cloth 71.

[0066] Specifically, the filter cylinder 2 includes a cylinder body 21 and a movable base plate 22 located inside the cylinder body 21. The cylinder body 21 has a hollow cubic structure with water outlet holes on both sides. The top of the cylinder body 21 is open. The movable base plate 22 matches the cross-section of the inner cavity of the cylinder body 21 and can move up and down along the cylinder body 21. The bottom of the cylinder body 21 is open. A lifter is provided below the cylinder body 21, extending into the cylinder body 21 to lift or lower the movable base plate 22. The top of the cylinder body 21 is open. The top of the cylinder body 21 with the opening closer to the fabric spreading device 1 is the first side of the filter cylinder 2, and the top of the cylinder body 21 with the opening away from the fabric spreading device 1 is the second side of the filter cylinder 2. The first and second sides extend horizontally and are flush with each other in the horizontal direction. The length direction of the first and second sides is perpendicular to the feeding direction of the fabric spreading device 1, and the first and second sides have a certain width in the feeding direction of the fabric spreading device 1. The first pressing assembly 5 and the second pressing assembly 6 press the filter cloth 71 onto the first side and the second side, respectively.

[0067] like Figures 5 to 10 As shown, in some specific embodiments, the pressure rod 51 includes a first position and a second position. The first position is the position where the pressure rod 51 presses the filter cloth 71 onto the filter cylinder 2, and the second position is the position where the projection of the pressure rod 51 in the horizontal direction falls outside the filter cloth 71. The drive transmission device 52 is used to drive the pressure rod 51 to move between the first position and the second position.

[0068] The drive transmission device 52 is located on the outer side of the upper edge of the filter cylinder 2, and includes a support base extending in a direction parallel to the first side, a connecting rod 522 hinged at one end to the support base, a connecting rod 523 hinged at the other end of the connecting rod 522, and a drive member 524 located on the side of the connecting rod 522 away from the filter cylinder 2. The hinge shafts between the connecting rod 522 and the support base 521 and between the connecting rod 522 and the connecting rod 523 are parallel to each other and perpendicular to the length direction of the first side. The end of the pressure rod 51 away from the filter cylinder 2 is connected to the drive member 524 and can slide on the drive member 524 in a vertical direction perpendicular to the pressure rod 51. The connecting rod 523 is connected to the middle of the pressure rod 51 and can slide along the length direction of the pressure rod 51. The power source 53, which can extend and retract horizontally along the first side, drives the drive member 524 to move horizontally. During the process of the drive member 524 driving the pressure rod 51 to move horizontally, the pressure rod 51 is driven to move up and down through the connecting rod 522 and the connecting rod 523.

[0069] Specifically, the extension direction of the pressure rod 51 is parallel to the extension direction of the support frame 521 and parallel to the length direction of the first side. The extension direction of the connecting rod 523 is parallel to the length direction of the first side, and it is cylindrical. The connecting rod 523 is sleeved in the middle of the pressure rod 51 and can slide along the length direction of the pressure rod 51.

[0070] The drive member 524 and the pressure rod 51 are slidably connected via a guide assembly 54. The guide assembly 54 includes a slide rail 541 mounted on the drive member 524, extending vertically, and a sliding sleeve 542, corresponding to the slide rail 541, mounted on the end of the pressure rod 51 away from the filter cylinder 2. The drive member 524 also includes an abutment portion 5241, which is positioned opposite to the side of the connecting rod 522 away from the filter cylinder 2. As the driving component 524 moves closer to the filter cylinder 2, it pushes the pressure rod 51 to slide along the connecting rod 523 via the guide assembly 54, feeding it closer to the filter cylinder 2. During this process, the connecting rod 522 is driven to rotate via the abutment part 5241. Under the limiting and guiding effect of the guide assembly 54, the pressure rod 51 slides up and down along the slide rail 541 without rotating, allowing the distance between the connecting rod 523 and the support frame 521 to change, that is, the pressure rod 51 moves in the vertical direction. Driven by the connecting rod 523, the pressure rod 51 presses the filter cloth 71 tightly onto the filter cylinder 2.

[0071] Therefore, by using a power source 53 to drive the drive component 524 to reciprocate in the direction approaching and away from the filter cylinder 2, the pressure rod 51 can be fed and pressed down towards the filter cylinder 2, and retracted and lifted away from the filter cylinder 2, realizing the movement of the pressure rod 51 between the first position and the second position. This reduces the power source 53 used to drive the pressure rod 51, which helps to reduce the cost of the equipment and simplifies the control system of the first cloth pressing assembly 5. By setting the connecting rod 523 as a cylinder, the force applied to the pressure rod 51 by the drive transmission device 52 can be applied to a section of the pressure rod 51 instead of a point on the pressure rod 51. This allows the pressure rod 51 to move and press down as a whole, avoiding the situation where the end of the pressure rod 51 away from the drive transmission device 52 tends to lift up when pressing the filter cloth 71, thus improving the pressing effect on the filter cloth 71.

[0072] The power source 53 can be a telescopic device, specifically a cylinder, a hydraulic cylinder, or a linear motor, as long as it can drive the drive component 524 to move back and forth in the horizontal direction towards and away from the filter cylinder 2.

[0073] In this embodiment, a power storage structure 525 is provided between the connecting rod 522 and the support frame 521. During the process of the driving member 524 moving towards the filter cylinder 2 and driving the connecting rod 522 to rotate towards the filter cylinder 2, the power storage structure 525 stores power. During the process of the driving member 524 moving away from the filter cylinder 2, the power storage structure 525 releases power, driving the connecting rod 522 to rotate away from the filter cylinder 2.

[0074] In some preferred embodiments, during the movement of the drive member 524 toward the filter cylinder 2, it is configured in a first working state where the abutment portion 5241 is spaced apart from the connecting rod 522, and a second working state where the abutment portion 5241 and the connecting rod 522 are slidably engaged, causing the connecting rod 522 to rotate toward the filter cylinder 2. Specifically, the first working state of the drive member 524 is that the abutment portion 5241 and the connecting rod 522 are spaced apart; the second working state of the drive member 524 is that the abutment portion 5241 and the connecting rod 522 are slidably engaged, causing the connecting rod 522 to rotate toward the filter cylinder 2.

[0075] During the movement of the drive member 524 towards the filter cylinder 2, in the first working state, the drive member 524 only drives the pressure rod 51 to advance towards the filter cylinder 2. In the second working state, the drive member 524 not only drives the pressure rod 51 to advance towards the filter cylinder 2, but also drives the connecting rod 522 to rotate towards the filter cylinder 2, and drives the pressure rod 51 to move downward through the connecting rod 523. Therefore, by setting the path length of the drive member 524 in the first working state, the length of the pressure rod 51 advancing towards the filter cylinder 2 can be increased or decreased. Preferably, when the drive member 524 is in the first working state, the horizontal distance between the sliding sleeve 542 and the end of the connecting rod 523 away from the filter cylinder 2 is greater than or equal to the horizontal distance between the abutment part 5241 and the connecting rod 522.

[0076] The energy storage structure 525 can be a torsion spring located at the hinge shaft of the connecting rod 522, or a compression spring or tension spring located between the connecting rod 522 and the support frame 521. It only needs to be able to drive the connecting rod 522 to rotate away from the filter cylinder 2.

[0077] Preferably, the energy storage structure 525 is configured as a spring-loaded telescopic rod, which is located on the side of the connecting rod 522 near the filter cylinder 2. One end of the spring-loaded telescopic rod is hinged to the support frame 521, and the other end is hinged to the connecting rod 522. During the rotation of the connecting rod 522 towards the filter cylinder 2 by the driving member 524, the spring-loaded telescopic rod retracts, and the spring inside the spring-loaded telescopic rod stores energy. During the movement of the driving member 524 away from the filter cylinder 2, the spring-loaded telescopic rod extends, causing the connecting rod 522 to return to its original position. During this process, the connecting rod 523 drives the pressure rod 51 to move upwards.

[0078] In this embodiment, the support frame 521 of the drive transmission device 52 can be part of the frame 4 used to support the cloth spreading device 1, or it can be set on the filter cylinder 2, or it can be set separately. The pressure rod 51 can be set above the support frame 521 or below the support frame 521. It is only necessary to ensure that when the connecting rod 522 rotates towards the filter cylinder 2, the connecting rod 523 can drive the pressure rod 51 to press down and press the filter cloth 71 tightly onto the filter cylinder 2, and when the connecting rod 522 rotates away from the filter cylinder 2, the connecting rod 523 can drive the pressure rod 51 to lift up.

[0079] If the pressure rod 51 is positioned above the support frame 521, then when the pressure rod 51 moves to the first position, the connecting rod 522 is inclined from bottom to top towards the filter cylinder 2. If the pressure rod 51 is positioned below the support frame 521, then when the pressure rod 51 moves to the first position, the connecting rod 522 is inclined from bottom to top away from the filter cylinder 2. This arrangement ensures that when the connecting rod 523 moves to the first position, the pressure rod 51 has the maximum feed length towards the filter cylinder 2, and that the drive transmission device 52 can convert the force provided by the power source 53 into a pressing force of the pressure rod 51 on the filter cloth 71. Preferably, when the drive member 524 is in the first working state, the connecting rod 522 extends inclined from bottom to top towards the filter cylinder 2.

[0080] In some preferred embodiments, the pressure rod 51 is positioned directly above the support frame 521, thereby allowing the connecting rod 523 to apply force to the pressure rod 51 closer to the filter cylinder 2, further improving the pressing effect on the filter cloth 71. Preferably, the drive transmission device 52 is positioned near the upper edge of the filter cylinder 2, the support frame 521 is positioned below the upper edge of the filter cylinder 2, and the connecting rod 523 is positioned above the upper edge of the filter cylinder 2. This not only improves the force application effect of the drive transmission device 52 on the pressure rod 51 but also makes the structure of the dewatering equipment with layered stacked materials compact.

[0081] In some preferred embodiments, the pressure bar 51 is configured as a straight bar that is parallel to the top of the filter cylinder 2 and extends along the length of the first side.

[0082] In some specific embodiments, the support frame 521 is provided with a support frame 5211 that protrudes towards the connecting rod 523 and extends in a direction parallel to the connecting rod 523. The driving member 524 is slidably mounted on the support frame 5211, and the support frame 5211 provides support and guidance for the driving member 524. The connecting rod 523 is located above the support frame 521, and the vertical distance between the end of the pressure rod 51 near the filter cylinder 2 and the top of the filter cylinder 2 is less than or equal to the vertical distance between the end of the pressure rod 51 away from the filter cylinder 2 and the top of the support frame 5211.

[0083] Preferably, when the pressure rod 51 presses the filter cloth 71 against the top of the filter cylinder 2, the end of the pressure rod 51 away from the filter cylinder 2 abuts against the top of the support frame 5211, thereby further improving the horizontality of the pressure rod 51 and enhancing the pressing effect on the filter cloth 71. Preferably, when the pressure rod 51 is in the first position, the connecting rod 523 and the support frame 5211 are offset from each other in the length direction of the pressure rod 51 to avoid mutual interference.

[0084] In this embodiment, the slide rail 541 and the abutment part 5241 are misaligned along the length of the connecting rod 523. The slide rail 541 is located at the end of the driving member 524 near the filter cylinder 2, and the abutment part 5241 is located at the end of the driving member 524 away from the filter cylinder 2.

[0085] In some preferred embodiments, the connecting rod 522 includes a first rod portion and a second rod portion clamped on both sides of the connecting rod 523. The upper ends of the first rod portion and the second rod portion are respectively hinged to the left and right sides of the connecting rod 523, and the lower ends of the first rod portion and the second rod portion are respectively hinged to the left and right sides of the support frame 521. A gap is formed between the first rod portion and the second rod portion. The support frame 5211 is disposed at the gap between the first rod portion and the second rod portion, protrudes upward from the support frame 521, and extends along the length direction of the support frame 521. The driving member 524 is disposed on the top of the support frame 5211 and slides with the top of the support frame 5211.

[0086] The driving member 524 extends along the length of the support frame 5211. At the end of the driving member 524 near the filter cylinder 2, a slide rail 541 extending vertically upwards is provided. At the end of the driving member 524 away from the filter cylinder 2, a first abutment portion and a second abutment portion extending downwards from the left and right sides of the support frame 5211 are provided. The first abutment portion and the second abutment portion correspond respectively to the side of the first rod portion and the second rod portion away from the filter cylinder 2. Preferably, the surface of the driving member 524 for abutting against the connecting rod 522 is an arc-shaped surface.

[0087] The connecting rod 522 can be a single rod or a group of rods, or multiple rods or groups of rods can be arranged at intervals along the length of the connecting rod 523. When multiple connecting rods 522 are arranged, each connecting rod 522 is of equal length and parallel to the others. Specifically, multiple connecting rods 522 are arranged at intervals along the length of the connecting rod 523, each connecting rod 522 is of equal length and parallel to the others, and the multiple connecting rods 522 can be multiple first rod sections or second rod sections. Alternatively, multiple groups of connecting rods 522 are arranged at intervals along the length of the connecting rod 523, each group of connecting rods 522 is of equal length and parallel to the others, and each group of connecting rods 522 includes a first rod section and a second rod section sandwiched between the two sides of the connecting rod 523.

[0088] Preferably, the connecting rod 522 is provided with two sets of parallel and equal lengths, which are respectively connected between the two ends of the connecting rod 523 and the support frame 521, forming a parallelogram mechanism on the support frame 521 to ensure the reliability of driving the pressure rod 51.

[0089] In some preferred embodiments, when the pressure bar 51 is in the first position, the angle between the connecting rod 522 and the horizontal direction is less than or equal to 45°, thereby enabling the parallelogram mechanism to convert more of the pushing force of the driving member 524 on the connecting rod 522 into downward pressure on the pressure bar 51, thus improving the pressing effect on the filter cloth 71.

[0090] In this embodiment, the length direction of the support frame 521, the length direction of the support frame 5211, the length direction of the connecting rod 523, and the length direction of the pressure rod 51 are all parallel to the length direction of the first side.

[0091] Preferably, the first pressing cloth assembly 5 further includes a limiting member 55 extending in the vertical direction. Along the length direction of the pressing rod 51, the limiting member 55 is disposed on both sides of the pressing rod 51 and fits against both sides of the pressing rod 51. Specifically, the limiting member 55 includes a first limiting member 551 and a second limiting member 552. The first limiting member 551 is disposed on the side of the pressure rod 51 facing the laying direction of the filter cloth 71, that is, on the side of the pressure rod 51 away from the fabric spreading device 1, and is in contact with the side of the pressure rod 51 facing the laying direction of the filter cloth 71. The second limiting member 552 is disposed on the side of the pressure rod 51 opposite to the laying direction of the filter cloth 71, that is, on the side of the pressure rod 51 close to the fabric spreading device 1, and is in contact with the side of the pressure rod 51 facing the opposite direction of the laying direction of the filter cloth 71. The pressure rod 51 is disposed between the first limiting member 551 and the second limiting member 552, and the pressure rod 51 passes through the gap between the first limiting member 551 and the second limiting member 552 to press the filter cloth 71. Therefore, when the pressure rod 51 tends to deflect in the horizontal direction due to the tension in the horizontal direction, the first limiting member 551 and the second limiting member 552 stop the pressure rod 51 from both sides to prevent it from rotating.

[0092] Preferably, the limiting member 55 includes a first plate 55-1 and a second plate 55-2. Specifically, the first plate 55-1 of the first limiting member 551 and the second limiting member 552 extends vertically. The first plates 55-1 of the first limiting member 551 and the second limiting member 552 are arranged opposite to each other and spaced apart. The space between the first plates 55-1 of the first limiting member 551 and the second limiting member 552 is used for the passage of the pressure rod 51. The second plates 55-2 of the first limiting member 551 and the second limiting member 552 extend horizontally from the bottom of the first plate 55-1 of the second limiting member 551 in a direction away from each other.

[0093] Preferably, a reinforcing rib 55-3 is provided between the first plate 55-1 and the second plate 55-2. The reinforcing rib 55-3 is perpendicular to the first plate 55-1 and the second plate 55-2, and extends vertically upward from the top of the second plate 55-2. The side of the reinforcing rib 55-3 closest to the first plate 55-1 is connected to the first plate 55-1.

[0094] Preferably, the limiting member 55 is disposed at one end of the support base near the filter cylinder 2, and the first limiting member 551 and the second limiting member 552 are integral with the support frame 521.

[0095] Preferably, the pressure rod 51 is flat and parallel to the top of the filter cylinder 2. The side of the pressure rod 51 opposite to the top of the filter cylinder 2 is set as a plane parallel to the top of the filter cylinder 2.

[0096] Preferably, the pressure rod 51 of the first pressing assembly 5 corresponds vertically to the side of the first side of the filter cylinder 2 near the opening at the top of the cylinder body 21. Along the feeding direction of the cloth-pushing and laying device 1, the first pressing assembly 5 is disposed on the outer walls of the left and right sides of the filter cylinder 2, with the end of the support seat near the filter cylinder 2 close to the outer wall of the filter cylinder 2. Specifically, the filter cylinder 2 includes a third side and a fourth side perpendicular to the first and second sides. The first pressing assembly 5 is disposed outside the third and / or fourth sides, and the extension direction of the pressure rod 51 is perpendicular to the third and fourth sides. The two first pressing assemblies 5 are respectively disposed outside the third and fourth sides, and the pressure rod 51 of the first pressing assembly 5 corresponds to the side of the first side near the opening at the top of the cylinder body 21, which can improve the utilization rate of the filter cloth.

[0097] like Figures 11 to 13 As shown, in some specific embodiments, the movable part 62 of the second pressing assembly 6 includes a rotating shaft 621 that rotatably engages with the fixed part 61, and pressing rods 622 disposed on the rotating shaft 621. The rotating shaft 621 is disposed on the outer side of the upper edge of the filter cylinder 2, higher than the top of the filter cylinder 2, and extends along the length direction of the second side. The pressing rods 622 extend in a direction perpendicular to the rotating shaft 621. At least two pressing rods 622 are provided and spaced apart along the axial direction of the rotating shaft 621. The pressing rods 622 rotate with the rotating shaft 621 to press / release the filter cloth 71.

[0098] The pressure rods 622 are parallel to each other and of equal length. The ends of the pressure rods 622 away from the rotating shaft 621 simultaneously press the filter cloth 71. The pressure rods 622 press the filter cloth 71 on the left and right sides near 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.

[0099] The pressure rod 622 presses the filter cloth 71 onto the second side. Preferably, the end of the pressure rod 622, the side facing the second side, is set as a plane parallel to the second side when pressing the filter cloth 71.

[0100] Specifically, the pressure rod 622 extends radially along the rotation shaft 621 and includes a neck 6221 and a head 6222. A first end of the neck 6221 is connected to the rotation shaft 621, and a first end of the head 6222 is connected to a second end of the neck 6221. The side of the first end of the head 6222 facing the second side protrudes towards the second side relative to the second end of the neck 6221, and this side of the head 6222 is configured as a plane inclined away from the second side in a direction away from the rotation shaft 621.

[0101] 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, and the cross-sectional area of ​​the first end of the head 6222 is larger than that of the second end of the neck 6221. The left side, right side, and side away from the second side of the neck 6221 and the head 6222 are coplanar, thus the thickness of the head 6222 gradually decreases along the vertical direction perpendicular to the neck 6221 from the pressure rod 622. Preferably, the end of the head 6222 has a certain thickness in the direction perpendicular to the pressure rod 622, which avoids the formation of a sharp angle at the second end of the head 6222. Preferably, the end of the head 6222 away from the rotation axis 621 is rounded. This prevents the end of the pressure rod 622 from puncturing the filter cloth 71.

[0102] The movable part 62 of the second pressing assembly 6 is configured with a first position in which the pressing rod 622 presses the filter cloth 71 on the second side when it rotates in the first direction, and a second position in which the pressing rod 622 and the second side are separated by a certain distance when it rotates in the second direction. This certain distance allows the front end of the pushing and spreading device 1 along the feeding direction to at least partially extend between the second side and the pressing rod 622.

[0103] 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 moves towards the second side of the filter cylinder 2, pushing against the filter cloth 71, 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. When the front end of the fabric spreading device 1 moves towards the second side of the filter cylinder 2, pushing against the filter cloth 71, the front end of the fabric spreading device 1 extends at least partially 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 against the second side of the filter cylinder 2. Specifically, when the front end of the fabric pushing and spreading device 1 moves along the feeding direction to the second side of the filter cylinder 2, the front end of the fabric pushing and spreading device 1 along the feeding direction at least partially overlaps with the moving path of the pressing rod 622. During the process of the movable part 62 rotating to the first position, the pressing rod 622 presses the filter cloth 71 covered on the front end of the fabric pushing and spreading device 1 along the feeding direction onto the second side of the filter cylinder 2.

[0104] In this embodiment, the front end of the fabric pushing and laying 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. Specifically, the front end of the fabric pushing and laying device 1 along the feeding direction is provided with a fabric pushing head 113. The two pressing rods 622 correspond to the two ends extending along the length of the second side of the fabric pushing head 113. Along the feeding direction of the fabric pushing and laying device 1, the front end of the fabric pushing head 113 is provided with notches 1135 corresponding to the pressing rods 622. The notch 1135 extends vertically through the fabric pushing 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 fabric pushing head 113 onto the second side.

[0105] Preferably, the second pressing assembly 6 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.

[0106] Preferably, the pressure rod 622 is located on the side of the rotating shaft 621 near the filter cylinder 2 and extends in a direction perpendicular to the rotating shaft 621. A drive rod 623 is located on the side of the rotating shaft 621 away from the filter cylinder 2, and the drive rod 623 is connected to the drive component. The fixed part 61 is provided with a drive component that is connected to the drive rod 623, and the drive component is a telescopic device. The two ends of the telescopic device are rotatably engaged with the ends of the fixed part 61 and the drive rod 623, respectively.

[0107] Specifically, the telescopic device is fixedly installed on the fixed part 61. 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.

[0108] Preferably, the pressing rod 622, the rotating shaft 621, and the drive rod 623 are integrally formed. The telescopic device can be a cylinder, a hydraulic cylinder, a linear motor, etc.

[0109] Preferably, 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, and includes a first support 611 and a second support 612. The first support 611 extends vertically along the length direction of the second side, and two spaced bushings are provided on the top of the first support 611, with the two ends of the rotating shaft 621 respectively installed in the two bushings. The second support 612 is vertically disposed on the side of the first support 611 away from the second side, and a telescopic device is disposed on the second support 612.

[0110] In this embodiment of the invention, a method for laying materials in the above-mentioned layered stacked material dewatering device is also provided, comprising the following steps:

[0111] S1: The first pressing cloth assembly 5 presses the filter cloth 71 tightly on the first side; the movable bottom plate 22 of the filter cylinder 2 moves to be flush with the top of the filter cylinder 2, or the movable bottom plate 22 moves to be slightly lower than the top of the filter cylinder 2, and the distance between the movable bottom plate 22 and the top of the filter cylinder 2 is greater than or equal to the thickness of the material laid on the filter cloth 71.

[0112] S2: The cloth-pushing and material-laying device 1 feeds from the first side to the second side, pushes the filter cloth 71 to be laid from the first side to the second side, and sprays material onto the filter cloth 71.

[0113] S3: The front end of the cloth pushing and spreading device 1 moves along the feeding direction to above the second side, and the second cloth pressing assembly 6 presses the filter cloth 71 tightly on the second side.

[0114] S4: The fabric pushing and spreading device 1 retracts from the second side. During or after the retraction, the first fabric pressing assembly 5 is reset.

[0115] S5: When the front end of the cloth pushing and spreading device 1 moves to outside the first side along the feeding direction, the movable bottom plate 22 of the filter cylinder 2 moves down one stroke, so that the filter cloth 71 wrapped with the material on the top layer falls into the filter cylinder 2, and the first cloth pressing assembly 5 acts again to press the filter cloth 71 on the first side.

[0116] Repeat steps S2 to S5. This allows for the layering of material to be treated, wrapped in filter cloth 71, to be laid vertically within the filter cylinder 2.

[0117] In this embodiment, in step S5, the downward movement of the movable base plate 22 matches the sum of the thickness of the material laid on the filter cloth 71 and the thickness of the filter cloth 71. Specifically, there are two layers of filter cloth 71 between two adjacent layers of material.

[0118] Preferably, during the process of the pusher cloth spreading device 1 retracting from the second side of the filter cylinder 2, the drive member 524 of the first pressing cloth assembly 5 moves away from the filter cylinder 2, and the pusher cloth spreading device 1 limits the lifting height of the pressing rod 51 during the process of being pulled out of the filter cloth 71.

[0119] Specifically, such as Figures 3 to 10 As shown, during the process of the fabric pushing and spreading device 1 retracting from the second side of the filter cylinder 2, the control drive 524 moves away from the filter cylinder 2, pulling the pressure rod 51 out of the filter cloth 71. During this process, the power storage structure 525 drives the connecting rod 522 to rotate away from the filter cylinder 2, and the connecting rod 523 drives the pressure rod 51 to rise. When the pressure rod 51 rises to abut against the bottom of the fabric pushing and spreading device 1, the connecting rod 523 stops rising under the reaction force of the pressure rod 51, and the pressure rod 51 continues to be pulled outward under the drive of the drive 524. When the pressure rod 51 is completely pulled out of the fabric pushing and spreading device 1, the power storage structure 525 drives the connecting rod 522 to continue rotating away from the filter cylinder 2, so that the pressure rod 51 rises to the initial position. This prevents the end of the filter cloth 71 closest to the pushing and spreading device 1 from being lifted too high during the movement of the pressure rod 51 to the second position. The pressure rod 51 will lift the end of the filter cloth 71 closest to the pushing and spreading device 1 to abut against the bottom of the pushing and spreading device 1, ensuring the flatness of the material on the filter cloth 71. At the same time, it can improve the efficiency of pushing and spreading the material.

[0120] In this embodiment, before the pusher head 113 of the pusher fabric spreading device 1 moves to the first side, the pressure rod 51 can be completely pulled out from both sides of the pusher fabric spreading device 1.

[0121] Preferably, the retraction speed of the material spreading body 11 is greater than or equal to the feed speed of the material spreading body 11.

[0122] Example 2

[0123] like Figures 1 to 3 ,and Figures 14 to 17 As shown in the embodiment of the present invention, a fabric spreading device 1 of the dewatering equipment for the layered stacked fabric in the above embodiment 1 is further introduced.

[0124] The fabric spreading device 1 includes a spreading body 11, with a spreading opening 1121 at the bottom. A downwardly extending spreading head 113 is provided at the front end of the spreading body 11 along the feeding direction. The first end of the spreading head 113 is connected to the spreading body 11, and the second end of the spreading head 113, opposite to the first end, is below the spreading opening 1121 at least when it contacts the filter cloth 71. During the spreading process, the spreading head 113 at the front end of the spreading body 11 presses against the filter cloth 71, covering the front end of the spreading body 11. As the spreading body 11 moves forward, the filter cloth 71 slides along the front end of the spreading body 11, causing it to be pulled off the winding roller 7. The reaction force stretches the filter cloth 71 below the spreading body 11, simultaneously spreading the material onto the filter cloth 71 below the spreading body 11. The height difference between the second end of the pusher head 113 and the material spreading opening 1121 can leave space for material to be laid between the filter cloth 71 below the material spreading body 11 and the material spreading opening 1121, which can prevent the material from sticking to the material spreading body 11 and improve the spreading effect of sludge.

[0125] Preferably, when the pusher head 113 comes into contact with the filter cloth 71, the height difference between the second end of the pusher head 113 and the material spreading port 1121 is greater than the thickness of the material spread on the filter cloth 71.

[0126] The second end of the pusher head 113 has a notch 1135 at its center, corresponding to the pressure rod 622. The notch 1135 extends through the pusher head 113 in a vertical direction perpendicular to the first end to the second end, with its opening facing away from the first end of the pusher head 113. Along a horizontal direction perpendicular to the first end to the second end of the pusher head 113, the width of the pressure rod 622 is smaller than the width of the notch 1135. When the second end of the pusher head 113 moves above the second side, the notch 1135 moves below the pressure rod 622, the movable part 62 rotates to the first position, and the end of the pressure rod 622 away from the rotation axis 621 passes through the notch 1135 from top to bottom, pressing the filter cloth 71 covering the second end of the pusher head 113 onto the filter cylinder 2.

[0127] Preferably, when the pusher head 113 abuts against the filter cloth 71, at least the top of the pusher head 113 is set as a downwardly inclined plane in the direction from the first end to the second end. During the pressing process of the pressure rod 622, the inclined plane at the top of the pusher head 113 can be used to relieve force, 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 pressure rod 622. This reduces the shear force on the filter cloth 71 and prevents tearing of the filter cloth 71.

[0128] Preferably, the pusher head 113 is inclined downwards from the first end to the second end, and its thickness gradually decreases in the direction perpendicular to the first end. This allows the end of the pressing rod 622 to pass smoothly through the notch 1135, pressing the filter cloth 71 onto the filter cylinder 2. Simultaneously, as the pusher head 113 of the material spreading body 11 pushes the filter cloth 71 forward, pulling it off the winding roller 7, it helps reduce the resistance of the pusher head 113 on the filter cloth 71, and also prevents excessive excess material from forming on the second side of the filter cylinder 2.

[0129] Preferably, the second end of the pusher head 113 is set to be arc-shaped.

[0130] Preferably, 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 spreading body 11. The solid column 1134 is connected to the fabric spreading body 11 via a support plate extending downwardly from the front end of the fabric spreading body 11. The end of the support plate away from the solid column 1134 is the first end of the pusher head 113. The solid column 1134 is positioned in front of the fabric spreading body 11, spaced apart from it, and connected to the front end of the fabric spreading body 11 via the support plate. The solid column 1134 constitutes the second end of the pusher head 113.

[0131] Preferably, the diameter of the solid column 1134 is smaller than the thickness of the front end of the fabric spreading body 11; the support plate includes two plates, which extend obliquely from the outer peripheral wall of the solid column 1134 towards the upper and lower edges of the front end of the fabric spreading body 11, respectively. The end of the support plate away from the solid body forms the first end of the pusher head 113. One end of the support plate is integrally connected to the solid column 1134, and the other end is connected to the front end of the fabric spreading body 11. The end of the support plate is smoothly connected to the outer peripheral wall of the solid column 1134, thereby forming a smooth surface at the second end of the pusher head 113, avoiding scratching the filter cloth 71 during the pusher process. Preferably, the two support plates are tangent to the upper and lower sides of the solid column 1134, respectively.

[0132] Preferably, a reinforcing plate 1133 is provided between the two support plates to strengthen the structure of the pusher head 113.

[0133] like Figures 14 to 17 As shown, in some specific embodiments, the extension length of the support plate connected to the solid column 1134 from below is less than the extension length of the support plate connected to the solid column 1134 from above. The reinforcing plate 1133 is disposed between the end of the support plate connected to the solid column 1134 from below away from the solid column 1134 and the middle of the support plate connected to the solid column 1134 from above.

[0134] In this embodiment, the pusher head 113 and the spreading body 11 can be integrated as one unit, or the pusher head 113 and the spreading body 11 can be rotatably coupled. Preferably, at least one end of the support plate connected to the solid column 1134 from above the solid column 1134 away from the solid column 1134 is smoothly connected to the spreading body 11.

[0135] In some possible embodiments, the pusher head 113 and the spreading body 11 are integrated. Specifically, the ends of the two support plates of the pusher head 113 that are away from the solid column 1134 are respectively connected to the upper and lower edges of the front end of the spreading body 11, and the second end of the pusher head 113 is lower than the spreading opening 1121.

[0136] In this embodiment, to prevent the pusher head 113 from scraping the material below the material spreading body 11, the material spreading body 11 can be raised when it retracts, or the entire pusher spreading device can be raised, or the movable bottom plate of the filter cylinder can be moved downwards, so that the pusher head 113 avoids the material spread on the filter cloth. Specifically, 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 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. Preferably, the movable bottom plate 22 initially moves to a position slightly lower than the top of the filter cylinder 2, and the distance between the movable bottom plate 22 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 bottom plate 22 of the filter cylinder 2 moves downwards by one stroke, which matches the sum of the thickness of the material spread on the filter cloth 71 and the thickness of the filter cloth 71.

[0137] like Figure 16 and Figure 17 As shown, in some other possible embodiments, the pusher head 113 is rotatably coupled to the spreading body 11. Thus, when the spreading body 11 advances, the pusher head 113 can be controlled to rotate downwards, so that the second end of the pusher head 113 is lower than the spreading opening 1121, creating a height difference between the pusher head 113 and the spreading opening 1121 greater than the thickness of the material spread on the filter cloth. When the spreading body 11 retracts, the pusher head 113 can be controlled to rotate upwards, so that the second end of the pusher head 113 is higher than the material on the filter cloth 71. This prevents the pusher head 113 from scraping against the material below the spreading body 11, avoids material sticking to the pusher head 113, improves the material spreading effect, and also helps to increase the retraction speed of the spreading body 11 and increase the spreading rate.

[0138] Preferably, the pusher head 113 includes a first position where it rotates upward to its upper limit and a second position where it rotates downward to its lower limit. When the pusher head 113 is in the first position and the second position, the height difference between the second end of the pusher head 113 is greater than the thickness of the material laid on the filter cloth. Preferably, an elastic element is provided between the pusher head 113 and the material laying body 11. The elastic element is used to drive the pusher head 113 to rotate to the first position. During the forward feeding process of the material laying body 11, the reaction force exerted by the filter cloth 71 on the pusher head 113 is greater than the elastic force of the elastic element. Driven by the reaction force of the filter cloth 71, the pusher head 113 rotates to the second position. Thus, the pusher head 113 can automatically switch between the first position and the second position and can match the pushing and laying action of the material laying body 11. Specifically, in this embodiment, when the pusher head 113 rotates to the first position, the height of the axis of the solid column 1134 is lower than the height of the rotation center of the pusher head 113, thereby ensuring that the pusher head 113 can smoothly rotate to the second position under the reaction force of the filter cloth 71.

[0139] like Figure 16 and Figure 17 As shown, in some specific embodiments, the rotation of the fabric pusher head 113 can be limited by the front end face of the fabric spreading body 11. Specifically, a rotating shaft can be positioned between the middle of the front end face of the fabric spreading body 11 and the fabric pusher head 113. A gap is provided between the fabric pusher head 113 and the fabric spreading body 11 for the fabric pusher head 113 to rotate. When the fabric pusher head 113 rotates to the first position, the upper end of the side of the fabric pusher head 113 closest to the fabric spreading body 11 abuts against the front end of the fabric spreading body 11. When the fabric pusher head 113 rotates to the second position, the lower end of the side of the fabric pusher head 113 closest to the fabric spreading body 11 abuts against the front end of the fabric spreading body 11. The elastic element used to drive the fabric pusher head 113 to rotate to the first position can be a torsion spring.

[0140] Preferably, the upper edge of the front end of the material spreading body 11 and / or the upper edge of the first end of the pusher head are provided with an arc-shaped chamfer to avoid scratching the filter cloth.

[0141] 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.

[0142] Specifically, when the working end of the first pressing cloth assembly 5 presses the filter cloth 71 on the first side of the filter cylinder 2 onto the filter cylinder 2, the top of the working end of the first pressing cloth assembly 5 is slightly lower than the bottom of the second end of the pushing cloth head 113, so that the pushing cloth head 113 can pass smoothly.

[0143] 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.

[0144] Preferably, the material spreading opening 1121 is located at the bottom of the material spreading body 11 and near the front end of the material spreading body 11, that is, the material spreading opening 1121 is located near the cloth pushing head 113, so that the material can be spread all over the filter cloth 71 below.

[0145] Preferably, the fabric spreading device 1 has a double-layer structure, including a base 12 and a spreading body 11 installed on the base 12.

[0146] The base 12 is mounted on the frame 4 via a first guide assembly, and the material spreading body 11 is mounted on the base 12 via a second guide assembly. One end of the drive device is connected to the base 12, and the other end is connected to the material spreading body 11. Therefore, before spreading the material, the base 12, carrying the material spreading body 11, can be moved along the first guide assembly by the front-mounted drive device between the base 12 and the frame 4, approaching the filter cylinder 2. During the spreading process, the drive device only needs to drive the material spreading body 11 to reciprocate above the filter cylinder 2. The extension length of the drive device remains within a small range, which helps ensure the smoothness of the reciprocating motion of the material spreading body 11 and improves the efficiency and control accuracy of spreading the material. Furthermore, using a short-stroke drive device to drive the material spreading body 11 helps reduce equipment costs.

[0147] The first guide component and the second guide component can be either a sliding guide rail structure or a rolling guide rail structure.

[0148] The extension direction of the first guide component is parallel to the extension direction of the second guide component. As the base 12 moves along the first guide component, the front end of the pusher body of the pusher 1 and the first side of the filter cylinder 2 approach each other and remain aligned.

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

[0150] In this embodiment, 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 15 as a flexible hose, the material conveying pipe 15 can move forward and backward with the base 12 and the material spreading body 11, 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.

[0151] Preferably, the material spreading body 11 includes a housing 111 and a material spreading pipe 112 installed inside the housing 111. The bottom of the housing 111 is provided with an opening, the material spreading pipe 112 is installed inside the housing 111, and the material spreading port 1121 of the material spreading pipe 112 is provided inside the opening. The material spreading body 11 sprays and discharges materials through the material spreading port 1121 of the material spreading pipe 112.

[0152] 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 dewatering device for layered, stacked materials, characterized in that, include: The filter cylinder (2) includes a hollow cubic cylinder body (21) and a movable bottom plate (22) located inside the cylinder body (21). A lifter is provided below the cylinder body (21) and extends into the cylinder body (21) to lift the movable bottom plate (22) to raise or lower it. The cloth-pushing and material-laying device (1) is set on one side of the filter cylinder (2), and moves back and forth above the filter cylinder (2) in the horizontal direction to lay the filter cloth (71) inside the filter cylinder (2) and spray the material to be processed onto the filter cloth (71). The pressing assembly has an open top on the cylinder body (21). The top of the cylinder body (21) with the open top near the side of the pushing and spreading device (1) is the first side of the filter cylinder (2), and the top of the cylinder body (21) with the open top away from the pushing and spreading device (1) is the second side of the filter cylinder (2). The pressing assembly includes a first pressing assembly (5) arranged in pairs at both ends of the first side, and a second pressing assembly (6) arranged in the middle of the outer wall of the second side. The first pressing cloth assembly (5) includes: a pressing rod (51) arranged parallel to the first side, the pressing rod (51) corresponding in the vertical direction to the side of the first side of the filter cylinder (2) near the opening at the top of the cylinder body (21); and a drive transmission device (52). The drive transmission device (52) is located on the outer side of the upper edge of the filter cylinder (2), including a support base extending in a direction parallel to the first side, a connecting rod (522) with one end hinged to the support base, a connecting rod (523) hinged to the other end of the connecting rod (522), and a drive member (524) located on the side of the connecting rod (522) away from the filter cylinder (2). The drive component (524) includes: a slide rail (541) extending vertically, with a sliding sleeve (542) sleeved on the slide rail (541) at one end of the pressure rod (51) away from the filter cylinder (2); and an abutment part (5241) connected to the slide rail (541) and disposed opposite to the side of the connecting rod (522) away from the filter cylinder (2). The connecting rod (523) is connected to the middle of the pressure rod (51) and can slide along the length of the pressure rod (51); The power source (53) that can extend and retract horizontally along the first side drives the drive member (524) to move horizontally. During the process of the drive member (524) driving the pressure rod (51) to move horizontally, the pressure rod (51) is driven to move up and down through the connecting rod (522) and the connecting rod (523). Limiting members (55) extending vertically are provided on both sides of the pressure rod (51) along its length direction, and the limiting members (55) are in contact with both sides of the pressure rod (51).

2. The dewatering equipment for layered stacked materials according to claim 1, characterized in that, The second pressing cloth assembly (6) is located in the middle of the outer side wall of the second side, including a fixed part (61) and a movable part (62) that rotates with the fixed part (61). The movable part (62) includes a pressing rod (622), which rotates with the rotation shaft (621) of the movable part (62) to press / release the filter cloth (71).

3. The dewatering equipment for layered stacked materials according to claim 1 or 2, characterized in that, During the process of the drive member (524) moving towards the filter cylinder (2), there is a first working state in which the abutment part (5241) is spaced apart from the connecting rod (522), and a second working state in which the abutment part (5241) and the connecting rod (522) slide together and drive the connecting rod (522) to rotate towards the filter cylinder (2).

4. The dewatering equipment for layered stacked materials according to claim 3, characterized in that, A power storage structure (525) is provided between the connecting rod (522) and the support frame (521); during the process of the driving member (524) moving towards the filter cylinder (2) and driving the connecting rod (522) to rotate towards the filter cylinder (2), the power storage structure (525) stores power; during the process of the driving member (524) moving away from the filter cylinder (2), the power storage structure (525) releases power, driving the connecting rod (522) to rotate away from the filter cylinder (2).

5. The dewatering equipment for layered stacked materials according to claim 1, characterized in that, The limiting component (55) is located at one end of the support base near the filter cylinder (2).

6. The dewatering equipment for layered stacked materials according to claim 2, characterized in that, The rotating shaft (621) is located on the outer side of the upper edge of the filter cylinder (2), higher than the top of the filter cylinder (2), and extends along the length of the second side. The pressure bar (622) is located on the side of the rotating shaft (621) near the filter cylinder (2) and extends in a direction perpendicular to the rotating shaft (621).

7. The dewatering equipment for layered stacked materials according to claim 6, characterized in that, A drive rod (623) is provided on the side of the rotating shaft (621) away from the filter cylinder (2), and the drive rod (623) is connected to the drive component.

8. The dewatering equipment for layered stacked materials according to claim 7, characterized in that, The fabric pushing and spreading device (1) has a fabric pushing head (113) at the front end along the feeding direction; The two pressing rods (622) correspond to the two ends of the pusher head (113) extending along the length of the second side, respectively; Along the feeding direction of the fabric pushing and spreading device (1), the front end of the fabric pushing head (113) is provided with a notch (1135) that corresponds one-to-one with the fabric pressing rod (622).

9. The dewatering equipment for layered stacked materials according to claim 8, characterized in that, The notch (1135) extends vertically through the pusher head (113), and 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 pusher head (113) tightly onto the second side.

10. The material spreading method of the dewatering equipment for layered stacked material according to any one of claims 1 to 9, characterized in that, include: S1: The first pressing cloth assembly (5) presses the filter cloth (71) onto the first side; the movable bottom plate (22) of the filter cylinder (2) moves to be flush with the top of the filter cylinder (2), or the movable bottom plate (22) moves to be lower than the top of the filter cylinder (2), and the gap between the movable bottom plate (22) and the top of the filter cylinder (2) is greater than or equal to the thickness of the material laid on the filter cloth (71); S2: The cloth-pushing and laying device (1) feeds from the first side to the second side, pushes the filter cloth (71) to be laid from the first side to the second side, and sprays material onto the filter cloth (71); S3: The front end of the cloth pushing and spreading device (1) moves along the feeding direction to above the second side, and the second cloth pressing assembly (6) presses the filter cloth (71) onto the second side; S4: The fabric pushing and spreading device (1) retracts from the second side. During or after the retraction, the first fabric pressing assembly (5) resets. S5: When the front end of the cloth pushing and spreading device (1) moves to outside the first side along the feeding direction, the movable bottom plate (22) of the filter cylinder (2) moves down one stroke, so that the filter cloth (71) wrapped with the material on the top layer falls into the filter cylinder (2), and the first cloth pressing assembly (5) moves again to press the filter cloth (71) on the first side. Repeat steps S2 to S5.

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