Cloth pressing assembly and water-containing material dehydration equipment

Abstract

The utility model provides a cloth pressing assembly and water-containing material dewatering equipment, the cloth pressing assembly comprises a pressing rod which is used for pressing filter cloth and extends along the horizontal direction, and an angle is formed between the length direction of the pressing rod and the laying direction of the filter cloth; the limiting component is at least arranged on the side, facing the laying direction of the filter cloth, of the pressing rod, and the limiting component is attached to the pressing rod. According to the utility model, through the arrangement of the limiting component, when the pressing rod is subjected to the horizontal acting force of the filter cloth, the pressing rod can be propped through the limiting component, particularly, one side, facing the laying direction of the filter cloth, of the pressing rod is propped, so that the pressing rod is prevented from displacing along the horizontal direction, and the pressing effect of the pressing rod on the filter cloth is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and particularly relates to a cloth pressing component and also relates to water-containing material dehydration equipment equipped with the cloth pressing component. Background Art

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

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

[0004] The filter cloth used in the stacking and squeezing device is typically an extra-long, continuous filter cloth. During operation, multiple layers of filter cloth must be stacked and spread, and the sludge is evenly distributed between the cloths. During stacking and spreading, a cloth pressing assembly is required to secure the filter cloth. This assembly primarily consists of two sets of front and rear cloth pressing assemblies, which hold the filter cloth in place during the spreading process.

[0005] Specifically, the front cloth pressing assembly is first used to press the proximal end of the filter cloth, and the discharge port of the sludge spreading mechanism is used to push the filter cloth forward. When the sludge spreading mechanism reaches the farthest limit position, the rear cloth pressing assembly presses 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 cloth pressing assembly is pulled out from both sides of the filter cloth and then pressed onto the upper layer of filter cloth.

[0006] However, the front cloth pressing assembly of the existing stacking and squeezing device usually uses a pressure rod to press the filter cloth. For example, the Chinese utility model patent with application number CN202023099235.0 discloses a fixing device for stacking filter cloth materials. Its front pressure rod mechanism is fixed to one end of the filter chamber near the sludge spreading mechanism. 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 fixing frame. The front pressure rod guide device is installed on both sides of the front pressure rod fixing 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 horizontally left and right relative to the front pressure rod lifting frame. When the sludge spreading device is outside the filter chamber, the horizontal pressure rod of the front pressure rod mechanism presses the filter cloth from both sides. When the sludge spreading device is fed forward, one end of the filter cloth is fixed by the horizontal pressure rod, and the discharge port moves forward against the filter cloth, spreading the sludge evenly on the filter cloth.

[0007] However, the existing front cloth pressing assembly mainly applies a vertical pressing force to the pressing rod. During the forward feeding process of the sludge spreading device, the discharge port applies a horizontal force to the filter cloth to flatten the filter cloth. The pressing rod will be subjected to a horizontal force. Under the force of the filter cloth, the pressing rod is easy to tilt along the laying direction of the filter cloth, causing the end of the filter cloth to loosen, affecting the laying effect of the filter cloth.

[0008] Therefore, designing a cloth pressing assembly that can prevent the pressing rod from deflecting under the force of the filter cloth and ensure working stability has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0009] The utility model provides a cloth pressing assembly for solving the problem of poor fixing effect on the filter cloth caused by the easy tilting of the pressing rod under the action of the filter cloth in the existing cloth pressing assembly.

[0010] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0011] A cloth pressing assembly includes a pressing rod extending in a horizontal direction for pressing the filter cloth, wherein the length direction of the pressing rod is set at an angle to the laying direction of the filter cloth; and further includes a limiting member, which is arranged at least on one side of the pressing rod facing the laying direction of the filter cloth, and the limiting member is in contact with the pressing rod.

[0012] Furthermore, a side of the limiting member facing the pressure rod is arranged as a plane perpendicular to the laying direction of the filter cloth.

[0013] Furthermore, the limiting component includes: a first plate, which is perpendicular to the laying direction of the filter cloth and is in contact with the pressure rod on one side facing the pressure rod; a second plate, which is arranged at either end of the first plate or at both ends of the first plate and extends in a direction away from the pressure rod, and a reinforcing rib is arranged between the first plate and the second plate.

[0014] Furthermore, two limiting members are provided, including: a first limiting member, which is arranged on the side of the pressure rod facing the laying direction of the filter cloth; a second limiting member, which is arranged on the side of the pressure rod opposite to the laying direction of the filter cloth, and the pressure rod passes through the gap between the first limiting member and the second limiting member to press the filter cloth.

[0015] Furthermore, the side wall of the pressure rod close to the limiting member is configured as a plane that fits the limiting member.

[0016] Furthermore, the pressure rod presses the filter cloth onto the filter cylinder, and the limiting member is arranged near the edge of the filter cylinder.

[0017] Furthermore, the pressure rod includes a first position where the filter cloth is pressed against the filter cylinder, and a second position where the horizontal projection of the pressure rod falls outside the filter cloth. When the pressure rod is in the second position, the pressure rod is at least partially in contact with the limiting member.

[0018] Furthermore, a driving transmission device for driving the pressure rod to move between a first position and a second position is provided on the side of the limiting member away from the filter cylinder, and the driving transmission device includes: a support frame; a parallelogram mechanism, which is arranged on the support frame, including two connecting rods respectively hinged to the support frame, parallel to each other and of equal length, and a connecting rod with both ends hinged to one end of the two connecting rods away from the support frame; a driving member, which moves back and forth in the direction of approaching and away from the filter cylinder; the pressure rod is arranged on the connecting rod and is slidable along the length direction of the connecting rod; the driving member is connected to the pressure rod for driving the pressure rod to move back and forth in the direction of approaching and away from the filter cylinder; the driving member is connected to the connecting rod for driving the pressure rod to press down or lift up through the parallelogram mechanism.

[0019] Furthermore, the pressure rod is configured to be flat and parallel to the top of the filter cylinder; and a side of the pressure rod opposite to the top of the filter cylinder is configured to be a plane parallel to the top of the filter cylinder.

[0020] The utility model also provides a dehydration device for water-containing materials, including a filter cylinder and a cloth pushing and spreading device arranged on one side of the filter cylinder, which is used to stack filter cloths in the filter cylinder and spray materials onto the filter cloths. The above-mentioned cloth pressing assembly is arranged on the top of the filter cylinder, and the cloth pressing assembly is arranged on the top of the filter cylinder, close to the cloth pushing and spreading device.

[0021] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art.

[0022] 1. The utility model provides a limiting member at least on one side of the pressure rod toward the laying direction of the filter cloth, and can use the limiting member to limit the pressure rod. Specifically, when the pressure rod is subjected to the horizontal force of the filter cloth, the limiting member can stop the pressure rod, especially the side of the pressure rod toward the laying direction of the filter cloth, to avoid the pressure rod from being displaced in the horizontal direction, thereby ensuring the pressing effect of the pressure rod on the filter cloth.

[0023] 2. The present invention provides a limiting member comprising a first limiting member and a second limiting member. The pressure rod passes through the gap between the first and second limiting members to press the filter cloth. The first and second limiting members can jointly limit the pressure rod in the horizontal direction, preventing the pressure rod from deflecting horizontally and enabling the pressure rod to withstand greater horizontal tension. Specifically, when the pressure rod tends to deflect horizontally due to horizontal tension, the first and second limiting members respectively stop the pressure rod from both sides to prevent it from rotating.

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0026] Figure 1 This is a schematic cross-sectional view of a water-containing material dehydration device in an embodiment of the present utility model;

[0027] Figure 2 For the embodiment of the utility model Figure 1 Enlarged view of point B in the middle;

[0028] Figure 3 This is a schematic structural diagram of a water-containing material dehydration device in an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the installation structure of the cloth pressing assembly in the embodiment of the present utility model;

[0030] Figure 5 This is a structural schematic diagram of the first cloth pressing assembly when a connecting rod is provided in an embodiment of the present utility model;

[0031] Figure 6This is a structural diagram of the first cloth pressing assembly when two connecting rods are provided in an embodiment of the present utility model;

[0032] Figure 7 2 is a structural schematic diagram of the first cloth pressing assembly when the pressing rod is in the second position in an embodiment of the present utility model;

[0033] Figure 8 This is a structural diagram of the embodiment of the utility model when the driving member switches to the second working state during the cloth pressing process of the first cloth pressing assembly;

[0034] Figure 9 Schematic diagram of the structure of the first cloth pressing assembly when the pressing rod is in the first position in an embodiment of the present utility model;

[0035] Figure 10 This is a structural diagram of the first cloth pressing assembly in the embodiment of the present invention when it is in the middle position during the retreat process;

[0036] Figure 11 This is a schematic cross-sectional view of the paving material body in the embodiment of the present utility model;

[0037] Figure 12 For the embodiment of the utility model Figure 11 Enlarged view of point A in the middle;

[0038] Figure 13 This is a structural diagram of the cloth pushing head in the first position in the embodiment of the present utility model;

[0039] Figure 14 This is a structural diagram of the cloth pushing head in the second position in an embodiment of the present utility model.

[0040] Description of the main components in the figure:

[0041] 1. Cloth-pushing and spreading device; 11. Spreading body; 111. Housing; 112. Spreading pipe; 1121. Spreading opening; 113. Cloth-pushing head; 1133. Reinforcement plate; 1134. Solid column; 2. Filter cylinder; 4. Frame; 41. Cloth guide roller; 5. First cloth-pressing assembly; 51. Pressing rod; 52. Driving transmission device; 521. Support frame; 5211. Support frame; 522. Connecting rod; 523. Connecting rod Rod; 524, driving member; 5241, abutment portion; 525, elastic member; 53, power source; 54, guide assembly; 541, slide rail; 542, sleeve; 55, limiting member; 551, first limiting member; 552, second limiting member; 55-1, first plate; 55-2, second plate; 55-3, reinforcing rib; 6, second cloth pressing assembly; 7, cloth winding roller; 71, filter cloth; 8, extrusion equipment.

[0042] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0045] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0046] like Figures 1 to 14 As shown, in an embodiment of the present invention, a dehydration device for water-containing materials is introduced, including a cloth pushing and spreading device 1 and a filter cylinder 2. The cloth pushing and spreading device 1 spreads the filter cloth 71 in the filter cylinder 2 and sprays the material to be processed onto the filter cloth 71.

[0047] During the laying process, the filter cloth 71 is fixed by two sets of cloth pressing assemblies.

[0048] In some specific embodiments, the cloth pushing and spreading device 1 is configured to move back and forth between a first side and a second side opposite to the filter cylinder 2 to fold the filter cloth 71 and spray the material to be processed onto the filter cloth 71 .

[0049] In the moving direction of the filter cloth 71 , a first cloth pressing assembly 5 and a second cloth pressing assembly 6 are respectively provided on the first side and the second side opposite to each other at the top of the filter cylinder 2 .

[0050] The filter cloth 71 is rolled up on the cloth winding roller 7. The cloth winding roller 7 containing the filter cloth 71 and the cloth pushing and spreading device 1 are located on the same side of the filter cylinder 2. The spreading opening 1121 of the cloth pushing and spreading device 1 is higher than the upper edge of the filter cylinder 2.

[0051] One or more cloth guide rollers 41 are provided between the cloth winding roller 7 and the filter cylinder. After the filter cloth 71 passes around the cloth guide rollers 41, the first cloth pressing assembly 5 presses the filter cloth onto the filter cylinder.

[0052] During the process of laying the filter cloth 71 from the first side to the second side of the filter cylinder 2, when the cloth pushing and spreading device 1 is outside the filter cylinder 2, the first cloth pressing assembly 5 presses the filter cloth 71 on the first side down on the filter cylinder 2; the cloth pushing and spreading device 1 pushes the filter cloth 71 and moves toward the second side of the filter cylinder 2, and at the same time, spreads the material evenly on the filter cloth 71, and the other end of the filter cloth 71 is dragged out from the cloth winding roller 7; when reaching the second side of the filter cylinder 2, the second cloth pressing assembly 6 presses the filter cloth 71 on the second side down on the filter cylinder 2, and the cloth pushing and spreading device 1 returns to its original position.

[0053] During the retraction process of the cloth pushing and spreading device 1, and / or after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 is pulled out; after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 moves again to press the filter cloth 71 on the first side down on the filter cylinder 2.

[0054] By repeating this movement, several layers of the material to be processed wrapped by the filter cloth 71 are laid up and down in the filter cylinder 2 .

[0055] It also includes an extrusion device 8, which is located above the filter cylinder 2 and is used to extrude the material.

[0056] In this embodiment, the material to be processed is a mixture of solid and liquid, for example, a water-containing material, and there is no limitation on the water content.

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

[0058] In this embodiment, to ensure proper material wrapping, the width of the filter cloth is greater than the width of the filter cylinder's internal space, and the width of the spreading opening of the cloth-pushing and spreading device is less than or equal to the width of the filter cylinder's internal space. After the cloth-pushing and spreading device spreads the material on the filter cloth, the movable bottom plate of the filter cylinder moves downward, and the filter cloth carrying the material falls into the filter cylinder. The sides of the filter cloth bend upward against the filter cylinder's resistance, wrapping the material from both sides and preventing it from flowing out of the filter cloth.

[0059] In some preferred embodiments, there is a certain distance between the cloth pressing position of the first cloth pressing assembly and the internal space of the filter cylinder. Therefore, when the movable bottom plate of the filter cylinder moves downward, the part of the filter cloth exceeding the internal space of the filter cylinder is bent upward under the obstruction of the first side of the filter cylinder, so that the side of the material close to the cloth pushing and spreading device is also wrapped by the filter cloth.

[0060] Example 1

[0061] The existing cloth pressing assembly, specifically the first cloth pressing assembly 5, utilizes a horizontally extending pressing rod 51 to press the filter cloth 71 against the filter cylinder 2. The cloth pressing assembly applies a vertical pressing force to the pressing rod 51. During the forward feeding process of the cloth pushing and spreading device 1, the spreading body 11 of the cloth pushing and spreading device 1 applies a horizontal force to the filter cloth 71 to flatten it. The pressing rod 51 is subjected to a horizontal force. Under the force of the filter cloth 71, the pressing rod 51 is easily tilted along the laying direction of the filter cloth 71, causing the end of the filter cloth 71 to become loose, thereby affecting the laying effect of the filter cloth 71.

[0062] like Figures 1 to 10 As shown, in this embodiment, a cloth pressing assembly is introduced to solve the above problem, prevent the pressing rod 51 from deflecting under the force of the filter cloth 71, and improve the stability of the cloth pressing assembly.

[0063] Specifically, such as Figures 4 to 10 As shown, the cloth pressing assembly includes a pressing rod 51 for pressing the filter cloth 71, and the length direction of the pressing rod 51 is set at an angle with the laying direction of the filter cloth 71. It also includes a limiting member 55, which is provided on at least one side of the pressing rod 51 facing the laying direction of the filter cloth 71, and the limiting member 55 is in contact with the pressing rod 51.

[0064] In this embodiment, the laying direction of the filter cloth 71 is the length direction of the filter cloth 71 , which is the direction extending from the first side edge to the second side edge of the filter cylinder 2 .

[0065] In this embodiment, the pressure rod 51 is parallel to the top of the filter cylinder 2 . Specifically, the pressure rod 51 extends in the horizontal direction. Preferably, the length direction of the pressure rod 51 is perpendicular to the laying direction of the filter cloth 71 .

[0066] The limiting member 55 is at least arranged on one side of the pressure rod 51 toward the laying direction of the filter cloth 71, that is, along the laying direction of the filter cloth 71, the limiting member 55 is at least arranged downstream of the pressure rod 51, that is, the limiting member 55 is at least arranged on one side of the pressure rod 51 close to the second side edge of the filter cylinder 2.

[0067] Through the above-mentioned arrangement, the pressure rod 51 can be limited by the limiting member 55. Specifically, when the pressure rod 51 is subjected to the horizontal force of the filter cloth 71, the pressure rod 51 can be stopped by the limiting member 55. In particular, the pressure rod 51 is stopped on the side facing the laying direction of the filter cloth 71 to avoid the pressure rod 51 from being displaced in the horizontal direction, thereby ensuring the pressing effect of the pressure rod 51 on the filter cloth 71.

[0068] In some possible embodiments, the limiting member 55 is provided as one, and is only provided on one side of the pressure rod 51 in the laying direction of the filter cloth 71. The limiting member 55 is in contact with the side of the pressure rod 51 in the laying direction of the filter cloth 71. When the pressure rod 51 is subjected to the horizontal pulling force of the filter cloth 71, the limiting member 55 stops the pressure rod 51 to prevent the pressure rod 51 from being offset.

[0069] like Figure 4 As shown, in some preferred embodiments, the limiting member 55 includes a first limiting member 551 and a second limiting member 552, the first limiting member 551 is arranged on the side of the pressure rod 51 toward the laying direction of the filter cloth 71, that is, arranged on the side of the pressure rod 51 away from the cloth pushing and spreading device 1, and is in contact with the side of the pressure rod 51 toward the laying direction of the filter cloth 71, the second limiting member 552 is arranged on the side of the pressure rod 51 opposite to the laying direction of the filter cloth 71, that is, arranged on the side of the pressure rod 51 close to the cloth pushing and spreading device 1, and is in contact with the side of the pressure rod 51 toward the laying direction opposite to the filter cloth 71, the pressure rod 51 is arranged 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.

[0070] In this embodiment, the above arrangement allows the first limiting member 551 and the second limiting member 552 to jointly limit the horizontal position of the compression rod 51, preventing the compression rod 51 from deflecting horizontally and enabling the compression rod 51 to withstand greater horizontal tension. Specifically, when the compression rod 51 tends to deflect horizontally due to the horizontal tension, the first limiting member 551 and the second limiting member 552 respectively stop the compression rod 51 from both sides of the compression rod 51, preventing it from rotating.

[0071] Preferably, in this embodiment, the side of the limiting member 55 facing the pressure rod 51 is configured as a plane perpendicular to the laying direction of the filter cloth 71. Thus, when one limiting member 55 is provided, one plane can be used to stop the pressure rod 51 on the side facing the laying direction of the filter cloth 71. When the limiting member 55 includes a first limiting member 551 and a second limiting member 552, two planes are used to stop the pressure rod 51, one from the side facing the laying direction of the filter cloth 71 and the other from the side facing the opposite direction of the laying direction of the filter cloth 71. This can further enhance the horizontal limiting effect of the pressure rod 51 and prevent its deflection.

[0072] In some specific embodiments, the limiting member 55 includes a first plate 55-1 and a second plate 55-2, the first plate 55-1 is perpendicular to the laying direction of the filter cloth 71, the first plate 55-1 is in contact with the pressure rod 51 on one side facing the pressure rod 51, the second plate 55-2 is arranged at either end of the first plate 55-1 or at both ends of the first plate 55-1, and extends in a direction away from the pressure rod 51, and a reinforcing rib 55-3 is arranged between the first plate 55-1 and the second plate 55-2, thereby improving the supporting strength of the limiting member 55 and further improving the stability of limiting the pressure rod 51.

[0073] like Figure 4 and Figure 6 As shown, in some specific embodiments, the first plates 55-1 of the first limiting member 551 and the second limiting member 552 extend in the vertical direction, and 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 from each other. The space between the first plates 55-1 of the first limiting member 551 and the second limiting member 552 is used for the pressure rod 51 to pass through, and 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 plates 55-1 of the first limiting member 551 and the second limiting member 552 in a direction away from each other.

[0074] 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 close to the first plate 55-1 is connected to the first plate 55-1.

[0075] Preferably, the side of the reinforcing rib 55 - 3 away from the first plate 55 - 1 is inclined from bottom to top toward the first plate 55 - 1 .

[0076] Preferably, in this embodiment, the first plate 55 - 1 , the second plate 55 - 2 , and the reinforcing ribs 55 - 3 are an integral part.

[0077] Preferably, in this embodiment, the side wall of the pressing rod 51 close to the limiting member 55 is set to be a plane that fits the limiting member 55.

[0078] Specifically, in this embodiment, the compression rod 51 is fitted with the first plate 55 - 1 of the first limiting member 551 and the second limiting member 552 via a plane, which can further improve the limiting effect of the limiting member 55 on the compression rod 51 .

[0079] In this embodiment, the pressing rod 51 presses the filter cloth 71 onto the filter cylinder 2, and the limiting member 55 is provided near the edge of the filter cylinder 2. Preferably, the side of the limiting member 55 near the filter cylinder 2 is in contact with the outer edge of the top of the filter cylinder 2.

[0080] In some specific embodiments, the pressure rod 51 includes a first position in which the filter cloth 71 is pressed against the filter cylinder 2, and a second position in which the horizontal projection of the pressure rod 51 falls outside the filter cloth 71. When the pressure rod 51 is in the second position, the pressure rod 51 is at least partially in contact with the limiting member 55.

[0081] That is, in this embodiment, when the pressing rod 51 moves between the first position and the second position, the pressing rod 51 always maintains at least partial contact with the limiting member 55 .

[0082] Specifically, the first plates 55-1 of the first and second position-limiting members 551, 552 extend vertically upward to a certain height above the filter tub 2. This certain height allows the first plates 55-1 to at least partially overlap with the compression rod 51 in the vertical direction when the compression rod 51 is in the second position. When the compression rod 51 is in the second position, the first plates 55-1 of the first and second position-limiting members 551, 552 at least partially overlap with each other in the longitudinal direction of the compression rod 51.

[0083] Preferably, when the pressing rod 51 is in the second position, the end of the pressing rod 51 close to the filter cylinder 2 is flush with the outer edge of the top of the filter cylinder 2 .

[0084] Preferably, in this embodiment, the lower ends of the first plates 55 - 1 of the first limiting member 551 and the second limiting member 552 are lower than the upper edge of the filter cylinder 2 .

[0085] In this embodiment, a driving transmission device 52 for driving the pressure rod 51 to move between the first position and the second position is provided on the side of the limiting member 55 away from the filter cylinder 2. The driving transmission device 52 can be any driving transmission device in the prior art.

[0086] In some specific embodiments, the drive transmission device 52 includes a support frame 521, a parallelogram mechanism, and a driving member 524. The support frame 521 is disposed below the upper edge of the filter cylinder 2. The parallelogram mechanism is disposed on the support frame 521 and includes two connecting rods 522, which are parallel to each other and of equal length and are hingedly connected to the support frame 521, and a connecting rod 523, each end of which is hingedly connected to one end of the two connecting rods 522 away from the support frame 521. The pressure rod 51 is disposed on the connecting rod 523 and is slidable along the length of the connecting rod 523. The driving member 524 reciprocates in a direction toward and away from the filter cylinder 2. The driving member 524 is in transmission connection with the pressure rod 51, driving the pressure rod 51 to reciprocate in a direction toward and away from the filter cylinder 2. The driving member 524 is in transmission connection with the connecting rod 522, driving the pressure rod 51 downward or upward through the parallelogram mechanism.

[0087] In some specific embodiments, the connecting rod 523 is cylindrical, and the pressure rod 51 is a straight rod parallel to the connecting rod 523. The radial cross-section of the pressure rod 51 is identical to the inner circumference of the radial cross-section of the connecting rod 523. The pressure rod 51 is longer than the connecting rod 523 and extends through the connecting rod 523 from the end thereof away from the filter cylinder 2. A vertically extending sliding sleeve 542 is provided at the end of the pressure rod 51 away from the filter cylinder 2. The driving member 524 is disposed at the end of the parallelogram mechanism away from the filter cylinder 2. A vertically extending sliding rail 541 is provided on the driving member 524, and the sliding sleeve 542 is sleeved onto the sliding rail 541.

[0088] An elastic member 525 is provided at one end of the parallelogram mechanism close to the filter cylinder 2. The elastic member 525 is a spring-type telescopic rod, one end of which is hinged to the connecting rod 522 close to the filter cylinder 2, and the other end is hinged to the support frame 521.

[0089] When the pressing rod 51 is in the second position, the driving member 524 is spaced apart from the connecting rod 522 , and the driving member 524 first drives the pressing rod 51 to move along the connecting rod 523 toward the filter cylinder 2 .

[0090] When the driving member 524 moves to abut against the connecting rod, the driving member 524 continues to move toward the filter cylinder 2, driving the connecting rod 522 to rotate toward the filter cylinder 2, causing the connecting rod 523 to drive the pressure rod 51 to slide downward along the slide rail 541. Preferably, when the driving member 524 moves to abut against the connecting rod, the sliding sleeve 542 is spaced apart from the end of the connecting rod 523 away from the filter cylinder 2.

[0091] When the power source 53 drives the driving member 524 to move away from the filter cylinder 2, the elastic member 525 drives the connecting rod 522 to rotate away from the filter cylinder 2, lifting the pressure rod 51 to a certain height, and then the driving member 524 continues to move away from the filter cylinder 2. After the pressure rod 51 is completely pulled out from the side of the filter cloth 71, the elastic member 525 drives the connecting rod 522 to continue rotating, moving the pressure rod 51 to the second position.

[0092] In some preferred embodiments, the parallelogram structure is arranged vertically.

[0093] In some preferred embodiments, the first limiting member 551 and the second limiting member 552 are configured as an integral piece with the support frame 521 .

[0094] In some preferred embodiments, the pressure rod 51 is flat and parallel to the top of the filter cylinder 2; the side of the pressure rod 51 opposite the top of the filter cylinder 2 is configured as a plane parallel to the top of the filter cylinder 2. In other words, the bottom surface of the pressure rod 51 is configured as a horizontally extending plane. Therefore, when the pressure rod 51 presses the filter cloth 71 against the top of the filter cylinder 2, the filter cloth 71 is clamped between the plane at the bottom of the pressure rod 51 and the plane at the top of the filter cylinder 2. Compared with the cylindrical pressure rod 51 in the prior art, the flat pressure rod 51 in this embodiment can achieve a better pressing effect.

[0095] This embodiment further provides a dehydration device for water-containing materials, comprising a filter cylinder 2 and a cloth-pushing and spreading device 1 disposed on one side of the filter cylinder 2 and configured to stack filter cloths 71 within the filter cylinder 2 and spray material onto the filter cloths 71. The aforementioned cloth-pressing assembly is disposed on the top of the filter cylinder 2 and is disposed on one side of the filter cylinder 2, near the cloth-pushing and spreading device 1, i.e., on a first side edge of the filter cylinder 2.

[0096] Example 2

[0097] The cloth pressing assembly of the existing dehydration equipment, specifically the first cloth pressing assembly 5, usually requires two power sources 53 to drive it. The two power sources 53 are used to drive the pressing rod 51 of the cloth pressing assembly to move horizontally and vertically, respectively, to press the filter cloth 71 onto the filter cylinder 2. The cost of the equipment is high, and the two power sources 53 need to be controlled separately, and the control process is complicated.

[0098] like Figures 1 to 10 As shown, in the embodiment of the utility model, based on the first embodiment, a cloth pressing assembly of a dehydration device is further introduced to solve the above-mentioned problem, and a power source 53 is used to drive the cloth pressing assembly to fix the filter cloth 71 on the side of the filter cylinder 2 close to the sludge spreading mechanism, that is, to fix the filter cloth 71 at the first side of the filter cylinder 2.

[0099] In this embodiment, the cloth pressing assembly is specifically a first cloth pressing assembly.

[0100] like Figures 4 to 10 As shown, in this embodiment, the cloth pressing assembly includes a driving transmission device 52, and a pressure rod 51 installed on the driving transmission device 52, and 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 driving transmission device 52 is used to drive the pressure rod 51 to move between the first position and the second position.

[0101] The driving transmission device 52 provided in this embodiment can be applied to the cloth pressing assembly in the first embodiment.

[0102] The driving transmission device 52 includes a support frame 521, a connecting rod 522, a connecting rod 523 and a driving member 524. One end of the connecting rod 522 is hinged to the support frame 521, and the other end of the connecting rod 522 is hinged to the connecting rod 523. The hinge axis between the connecting rod 522 and the support frame 521 and the hinge axis between the connecting rod 522 and the connecting rod 523 are parallel to each other. The connecting rod 523 is cylindrical and is sleeved on the pressure rod 51. The connecting rod 523 can slide along the length direction of the pressure rod 51.

[0103] The driving member 524 is slidably connected to the pressure rod 51 via a guide assembly 54. The extension direction of the guide assembly 54 is parallel to the rotation plane of the connecting rod 522, and the guide assembly 54 is arranged at an angle to the connecting rod 523. The movement path of the driving member 524 is parallel to the extension direction of the connecting rod 523. Driven by the power source 53, the driving member 524 reciprocates in the direction of approaching and moving away from the filter cloth. When the driving member 524 drives the pressure rod 51 to slide along the connecting rod 523, it drives the connecting rod 522 to rotate. The connecting rod 523 slides along the pressure rod 51, causing the pressure rod 51 to slide along the guide assembly 54.

[0104] In this embodiment, the “directions approaching and moving away from the filter cloth” refer to the “directions approaching and moving away from the filter cylinder”.

[0105] Thus, since the guide assembly 54 and the connecting rod 523 are set at an angle, during the process of the driving member 524 moving toward the filter cloth, the driving member 524 pushes the pressure rod 51 to slide along the connecting rod 523 through the guide assembly 54, and feeds in the direction close to the filter cloth. During the process of driving the connecting rod 522 to rotate, under the limiting and guiding action of the guide assembly 54, the connecting rod 523 drives the pressure rod 51 to move horizontally along the guide assembly 54 without rotating, which can change the distance between the connecting rod 523 and the support frame 521. Driven by the connecting rod 523, the pressure rod 51 presses the filter cloth 71 against the filter cylinder 2.

[0106] Through the above arrangement, a power source 53 can be used to drive the driving member 524 to move back and forth in the direction close to and away from the filter cylinder 2, so that the pressure rod 51 can be fed in the direction close to the filter cylinder 2 and pressed down, and the pressure rod 51 can be retreated and lifted in the direction away from the filter cylinder 2, thereby realizing the movement of the pressure rod 51 between the first position and the second position, reducing the power source 53 used to drive the pressure rod 51, which is beneficial to reducing the cost of the equipment and simplifying the control system of the cloth pressing assembly.

[0107] In this embodiment, by setting the connecting rod to be cylindrical, the force applied by the driving transmission device to the pressure rod can be applied to a certain section of the pressure rod instead of a certain point on the pressure rod, so that the pressure rod can be moved downward as a whole, avoiding the situation where the end of the pressure rod away from the driving transmission device is easily lifted up when the pressure rod is pressing the filter cloth, thereby improving the pressing effect on the filter cloth.

[0108] In this embodiment, the rotation plane of the connecting rod 522 is the plane where the rotation center of the connecting rod 522 is located, that is, the plane perpendicular to the hinge axis between the connecting rod 522 and the support frame 521.

[0109] In this embodiment, the support frame 521 of the driving transmission device 52 can be a part of the frame 4 for supporting the cloth pushing and spreading device 1, or can be set on the filter cylinder 2, or can be set separately.

[0110] In this embodiment, with regard to the arrangement of the connecting rod 523 and the support frame 521 of the driving transmission device 52, the pressure rod 51 can be arranged above the support frame 521, or the pressure rod 51 can be arranged below the support frame 521. It is only necessary to ensure that during the rotation of the connecting rod 522 toward the direction approaching the filter cylinder 2, the connecting rod 523 can drive the pressure rod 51 to press down, pressing the filter cloth 71 tightly against the filter cylinder 2, and during the rotation of the connecting rod 522 toward the direction away from the filter cylinder 2, the connecting rod 523 can drive the pressure rod 51 to lift up.

[0111] If the pressure rod 51 is arranged 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 toward the filter cylinder 2. If the pressure rod 51 is arranged 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 toward the filter cylinder 2. Through the above arrangement, it can be ensured that when the connecting rod 523 moves to the first position, the length of the pressure rod 51 fed above the filter cylinder 2 is the maximum, and it can be ensured that the driving transmission device 52 can convert the force provided by the power source 53 into the pressing force of the pressure rod 51 on the filter cloth 71, thereby ensuring the pressing effect on the filter cloth 71.

[0112] In some preferred embodiments, the pressing rod 51 is arranged above the support frame 521 , so that the force application point of the connecting rod 523 on the pressing rod 51 can be closer to the filter cylinder 2 , further improving the pressing effect on the filter cloth 71 .

[0113] In this embodiment, regarding the installation position of the driving transmission device 52, the connecting rod 523 of the driving transmission device 52 can be installed above the upper edge of the filter cylinder 2 or below the upper edge of the filter cylinder 2, as long as the working end of the pressing rod 51 is extended above the upper edge of the filter cylinder 2. The working end of the pressing rod 51 is the end of the pressing rod 51 used to press the filter cloth 71.

[0114] In some preferred embodiments, the driving transmission device 52 is arranged near the upper edge of the filter cylinder 2. Specifically, the support frame 521 is arranged below the upper edge of the filter cylinder 2, and the connecting rod 523 is arranged above the upper edge of the filter cylinder 2. In this way, the force effect of the driving transmission device 52 on the pressure rod 51 can be improved, and the structure of the water-containing material dehydration equipment can be made compact.

[0115] In this embodiment, the structure of the pressure rod 51 is such that its extension direction is angled with the length direction of the filter cloth 71. The pressure rod 51 can be a straight rod or a bent rod, as long as the rod 51 and the connecting rod 523 are straight. The end of the pressure rod 51 closest to the filter cylinder 2 is the working end of the pressure rod 51. Preferably, the working end of the pressure rod 51 is perpendicular to the length direction of the filter cloth 71.

[0116] In some preferred embodiments, the pressure rod 51 is configured as a straight rod parallel to the top of the filter cylinder 2 and extending in a length direction perpendicular to the filter cloth 71. Thus, in the process of the driving member 524 moving toward the filter cylinder 2, the displacement length of the connecting rod 523 fed toward the filter cylinder 2 is increased, thereby improving the pressing effect of the pressure rod 51 on the filter cloth 71.

[0117] In this embodiment, the “length direction of the filter cloth 71 ” is specifically the extension direction of the filter cloth 71 at the top of the filter cylinder 2 , that is, the extension direction extending from the first side edge to the second side edge of the filter cylinder 2 .

[0118] In some possible embodiments, the power source 53 can be a retractable device, specifically, a cylinder, a hydraulic cylinder, or a linear motor, etc., as long as it can drive the driving member 524 to move back and forth in the direction of approaching and moving away from the filter cylinder 2.

[0119] Preferably, in some specific embodiments, the power source 53 is configured as a hydraulic cylinder, which is fixed to the support frame 521. The working end of the hydraulic cylinder is connected to the driving member 524, and is used to drive the driving member 524 to move back and forth in a direction toward and away from the filter cylinder 2. The extension direction of the hydraulic cylinder is parallel to the extension direction of the pressure rod 51.

[0120] like Figures 7 to 10 As shown, in some specific embodiments, the driving member 524 is disposed at the end of the pressure rod 51 away from the filter cylinder 2. In at least a portion of the movement path of the driving member 524 toward the filter cylinder 2, the driving member 524 abuts and slides against the side of the connecting rod 522 away from the filter cylinder 2, thereby driving the connecting rod 522 to rotate toward the filter cylinder 2. Thus, the horizontal and vertical displacements of the pressure rod 51 can be performed simultaneously or sequentially.

[0121] Preferably, in this embodiment, taking into account the cloth pressing method of the cloth pressing assembly, the driving member 524 can be set to first drive the pressing rod 51 to feed in the direction close to the filter cylinder 2 when pressing the cloth. After feeding a certain length, the driving member 524 abuts against the side of the connecting rod 522 away from the filter cylinder 2, and the driving member 524 continues to move in the direction close to the filter cylinder 2, driving the connecting rod 522 to rotate in the direction close to the filter cylinder 2, so that the pressing rod 51 presses the filter cloth 71 on the filter cylinder 2, which can ensure that the pressing rod 51 has sufficient length to press the filter cloth 71.

[0122] In this embodiment, the driving member 524 is arranged at the end of the pressure rod 51 away from the filter cloth 71, and is provided with an abutment portion 5241 corresponding to the side of the connecting rod away from the filter cloth; on at least part of the moving path of the driving member 524 in the direction approaching the filter cloth, the abutment portion 5241 slides and cooperates with the connecting rod 522, driving the connecting rod 522 to rotate in the direction approaching the filter cloth 71.

[0123] In this embodiment, the process of the driving member 524 moving toward the direction close to the filter cloth includes a first working state and a second working state. Specifically, the first working state of the driving member 524 is that the abutment portion 5241 is spaced apart from the connecting rod; the second working state of the driving member 524 is that the abutment portion 5241 slides in cooperation with the connecting rod, driving the connecting rod to rotate toward the direction close to the filter cloth.

[0124] During the process of the driving member 524 moving toward the filter cylinder 2, in the first working state, the driving member 524 only drives the pressing rod 51 to advance toward the filter cylinder 2. During the process of the driving member 524 moving toward the filter cylinder 2, in the second working state, the driving member 524 not only drives the pressing rod 51 to advance toward the filter cylinder 2, but also drives the connecting rod 522 to rotate toward the filter cylinder 2, thereby pressing the pressing rod 51 downward via the connecting rod 523. Thus, by adjusting the path length of the driving member 524 during its movement toward the filter cylinder 2 in the first working state, the length of the pressing rod 51 advancing toward the filter cylinder 2 can be increased or decreased.

[0125] In this embodiment, when the driving member is in the first working state, the horizontal distance between the sliding sleeve and the connecting rod away from one end of the filter cylinder is greater than or equal to the horizontal distance between the abutting portion 5241 and the connecting rod.

[0126] Preferably, when the driving member is in the first working state, the connecting rod extends obliquely from bottom to top toward the filter cylinder.

[0127] In this embodiment, the slide rail and the abutment portion 5241 are staggered along the length direction of the connecting rod. The slide rail is provided at the end of the driving member close to the filter cylinder, and the abutment portion 5241 is provided at the end of the driving member away from the filter cylinder.

[0128] In this embodiment, the driving member 524 and the pressure rod 51 are connected to each other through a guide assembly 54. The guide assembly 54 is preferably arranged in the rotation plane of the connecting rod 522, and the extension direction of the guide assembly 54 is arranged at an angle to the connecting rod 523.

[0129] Specifically, the guide assembly 54 includes a slide rail 541 arranged on the driving member 524 or the end of the pressure rod 51 away from the filter cylinder 2, and a slide sleeve 542 corresponding to the slide rail 541 and arranged on the end of the pressure rod 51 away from the filter cylinder 2 or the driving member 524, and the slide sleeve 542 is sleeved on the slide rail 541.

[0130] Thus, when the driving member 524 moves toward the filter cylinder 2, the driving member 524 pushes the pressure rod 51 to slide along the connecting rod 523 toward the filter cylinder 2 through the guide assembly 54. In the process of the driving member 524 driving the connecting rod 522 to rotate, the connecting rod 523 drives the pressure rod 51 to move along the slide rail 541, thereby guiding the displacement of the pressure rod 51 in the vertical direction.

[0131] Preferably, in this embodiment, the slide rail 541 is provided on the driving member 524 , and the slide sleeve 542 is provided at the end of the pressure rod 51 away from the filter cylinder 2 .

[0132] Preferably, in this embodiment, the extending direction of the slide rail 541 is perpendicular to the connecting rod 523 .

[0133] In some specific embodiments, the support frame 521 is provided with a support frame 5211 that protrudes in a direction close to the connecting rod 523 and extends in a direction parallel to the connecting rod 523. The driving member 524 is slidably provided on the support frame 5211, and the support frame 5211 supports and guides the driving member 524.

[0134] In some possible embodiments, the connecting rod is disposed above the support frame, and the vertical distance between the end of the pressing rod closer to the filter cylinder and the top of the filter cylinder is less than or equal to the vertical distance between the end of the pressing rod farther from the filter cylinder and the top of the support frame. This ensures that the connecting rod can drive the pressing rod to press the filter cloth on the filter cylinder tightly.

[0135] Preferably, when the pressure rod presses the filter cloth against the top of the filter cylinder, the end of the pressure rod away from the filter cylinder abuts against the top of the support frame, thereby further improving the horizontality of the pressure rod and improving the pressing effect on the filter cloth.

[0136] In this embodiment, when the pressure rod is in the first position, the connecting rod and the supporting frame are offset from each other in the length direction of the pressure rod to avoid mutual interference.

[0137] Preferably, the connecting rod 522 includes a first rod portion and a second rod portion clamped on both sides of the connecting rod 523, and the supporting frame 5211 at least partially extends between the first rod portion and the second rod portion.

[0138] The driving member 524 includes a first abutting portion and a second abutting portion corresponding to the first rod portion and the second rod portion respectively. A gap corresponding to the supporting frame 5211 is defined between the first abutting portion and the second abutting portion.

[0139] In some specific embodiments, the upper ends of the first rod portion and the second rod portion of the connecting rod 522 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, and a gap is formed between the first rod portion and the second rod portion. The support frame 5211 is arranged at the gap between the first rod portion and the second rod portion, protruding upward from the support frame 521 and extending along the length direction of the connecting rod 523. The driving member 524 is arranged at the top of the support frame 5211 and slides with the top of the support frame 5211.

[0140] The driving member 524 extends along the length direction of the support frame 5211, and the end of the driving member 524 close to the filter cylinder 2 is provided with a slide rail 541 extending upward in the vertical direction, and the end of the driving member 524 away from the filter cylinder 2 is provided with a first abutment portion and a second abutment portion extending downward from the left and right sides of the support frame 5211, and the first abutment portion and the second abutment portion respectively correspond to the side of the first rod portion and the second rod portion away from the filter cylinder 2.

[0141] Preferably, in this embodiment, the surface of the driving member 524 for contacting with the connecting rod 522 is configured as an arc-shaped surface.

[0142] Specifically, at least one side of the first abutting portion and the second abutting portion opposite to the first rod portion and the second rod portion is configured as an arcuate surface, which can improve the smoothness of the driving member 524 driving the connecting rod 522 .

[0143] The connecting rod 522 can be provided as one or a group, or can be provided as multiple or multiple groups spaced apart along the length direction of the connecting rod 523. When the connecting rod 522 is provided as multiple or multiple groups, each connecting rod 522 is of equal length and parallel to each other.

[0144] Specifically, the connecting rods 522 are provided in a plurality of spaced-apart rows along the length of the connecting rod 523. Each connecting rod 522 is of equal length and parallel to one another. The plurality of connecting rods 522 may be a plurality of first rod portions or a plurality of second rod portions. Alternatively, the connecting rods 522 are provided in a plurality of groups spaced-apart rows along the length of the connecting rod 523. Each group of connecting rods 522 is of equal length and parallel to one another. Each group of connecting rods 522 includes a first rod portion and a second rod portion sandwiched between two sides of the connecting rod 523.

[0145] Preferably, in this embodiment, the connecting rod 522 is arranged into multiple groups, which can improve the smoothness of the connecting rod 523 driving the pressure rod 51 and ensure the parallelism between the connecting rod 523 and the support frame 521. Therefore, during the rotation of the connecting rod 522, the connecting rod 523 only pulls down or lifts the pressure rod 51.

[0146] In some specific embodiments, the connecting rod 522 is provided with two parallel and equal-length groups, 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.

[0147] In some preferred embodiments, when the pressure rod is in the first position, the angle between the connecting rod and the horizontal direction is less than or equal to 45°, so that the parallelogram mechanism can convert more of the driving force of the driving member on the connecting rod into downward pressure on the pressure rod, thereby improving the pressing effect on the filter cloth.

[0148] In some possible embodiments, the driving transmission device 52 further includes an elastic member 525 for driving the connecting rod 522 to rotate toward a side away from the filter cylinder 2 . The elastic member 525 is disposed between at least one connecting rod 522 and the support frame 521 .

[0149] Preferably, the elastic member 525 is disposed between any set of connecting rods 522 and the support frame 521 .

[0150] In this embodiment, the elastic member 525 can be a torsion spring arranged at the hinge axis of the connecting rod 522, or a compression spring or tension spring arranged 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.

[0151] like Figure 5 and Figure 6 As shown, in some specific embodiments, the elastic member 525 is configured as a spring-type telescopic rod, which is arranged on the side of the connecting rod 522 close to the filter cylinder 2, and one end of the spring-type telescopic rod is hinged to the support frame 521, and the other end is hinged to the connecting rod 522.

[0152] When the driving member 524 drives the connecting rod 522 to rotate toward the filter cylinder 2, the spring-type telescopic rod contracts and the spring inside the spring-type telescopic rod accumulates force. When the driving member 524 moves toward the direction away from the filter cylinder 2, the spring-type telescopic rod extends, driving the connecting rod 522 to reset. During this process, the connecting rod 523 drives the pressure rod 51 to move upward.

[0153] Preferably, in some possible embodiments, the cloth pressing assembly is arranged at the first side of the filter cylinder 2 close to the cloth pushing and spreading device 1 .

[0154] Before the cloth-pushing and spreading device 1 advances from the first side of the filter cylinder 2 to the second side away from the cloth-pushing and spreading device 1, the cloth-pressing assembly presses the filter cloth 71 against the filter cylinder 2. During the process of the cloth-pushing and spreading device 1 retracting from the second side of the filter cylinder 2, the driving member 524 moves in the direction away from the filter cylinder 2, and the cloth-pushing and spreading device 1 limits the lifting height of the pressing rod 51 during the process of withdrawing the pressing rod 51 from the filter cloth 71.

[0155] Specifically, such as Figures 7 to 10 As shown, during the process of the cloth pushing and spreading device 1 retreating from the second side of the filter cylinder 2, the driving member 524 is controlled to move in the direction away from the filter cylinder 2, and the pressure rod 51 is pulled out of the filter cloth 71. During this process, the elastic member 525 drives the connecting rod 522 to rotate in the direction away from the filter cylinder 2, and the connecting rod 523 drives the pressure rod 51 to lift. When the pressure rod 51 rises to abut against the bottom of the cloth pushing and spreading device 1, the connecting rod 523 no longer rises under the reaction force of the pressure rod 51, and the pressure rod 51 continues to be pulled outward under the drive of the driving member 524. When the pressure rod 51 is completely pulled out of the cloth pushing and spreading device 1, the elastic member 525 drives the connecting rod 522 to continue to rotate in the direction away from the filter cylinder 2, so that the pressure rod 51 rises to its initial position. Thus, it is possible to prevent the end of the filter cloth 71 close to the cloth 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 can lift the end of the filter cloth 71 close to the cloth pushing and spreading device 1 to abut against the bottom of the cloth pushing and spreading device 1, thereby ensuring the flatness of the material on the filter cloth 71.

[0156] In this embodiment, before the cloth pushing head 113 of the cloth pushing and spreading device 1 moves to the first side, the pressing rod 51 can be completely pulled out from both sides of the cloth pushing and spreading device 1.

[0157] like Figure 6 As shown, specifically, in this embodiment, the parallelogram structure is vertically arranged, that is, the support frame 521 and the connecting rod 523 are located in the same vertical plane, and the two parallel connecting rods 522 are arranged in a direction away from the filter cylinder 2. The connecting rod 523 extends in a direction perpendicular to the length of the filter cloth 71, that is, the vertical plane in which the parallelogram structure is located is perpendicular to the length of the filter cloth 71.

[0158] In this embodiment, the connecting rods 522 and the support frame 521, and the connecting rods 522 and the connecting rods 523 are all hinged, and the hinge axes are parallel to each other. The vertical plane where the parallelogram mechanism is located is a plane perpendicular to the hinge axes.

[0159] The connecting rod 523 is parallel to the top of the filter cylinder 2. Specifically, it extends in the horizontal direction.

[0160] The connecting rod 523 is cylindrical in shape, and the pressure rod 51 is a straight rod extending horizontally and parallel to the connecting rod 523. The radial cross-section of the pressure rod 51 is identical to the inner circumference of the radial cross-section of the connecting rod 523. The pressure rod 51 is longer than the connecting rod 523 and extends through the connecting rod 523 from the end thereof away from the filter cylinder 2. A sliding sleeve 542 extending vertically is provided on the end of the pressure rod 51 away from the filter cylinder 2.

[0161] The driving member 524 is disposed at one end of the parallelogram structure away from the filter cylinder 2 . A slide rail 541 extending in a vertical direction is disposed on the driving member 524 , and the sliding sleeve 542 is sleeved on the slide rail 541 .

[0162] The elastic member 525 is arranged at one end of the parallelogram mechanism close to the filter cylinder 2 and is a spring-type telescopic rod, one end of which is hinged to the connecting rod 522 close to the filter cylinder 2 side, and the other end is hinged to the support frame 521.

[0163] When the pressing rod 51 is in the second position, the driving member 524 is spaced apart from the connecting rod 522 , and the driving member 524 first drives the pressing rod 51 to move along the connecting rod 523 toward the filter cylinder 2 .

[0164] When the driving member 524 moves to abut against the connecting rod, the driving member 524 continues to move toward the filter cylinder 2, driving the connecting rod 522 to rotate toward the filter cylinder 2, causing the connecting rod 523 to drive the pressure rod 51 to slide downward along the slide rail 541. Preferably, when the driving member 524 moves to abut against the connecting rod, the sliding sleeve 542 is spaced apart from the end of the connecting rod 523 away from the filter cylinder 2.

[0165] When the power source 53 drives the driving member 524 to move away from the filter cylinder 2, the elastic member 525 drives the connecting rod 522 to rotate away from the filter cylinder 2, lifting the pressure rod 51 to a certain height, and then the driving member 524 continues to move away from the filter cylinder 2. After the pressure rod 51 is completely pulled out from the side of the filter cloth 71, the elastic member 525 drives the connecting rod 522 to continue rotating, moving the pressure rod 51 to the second position.

[0166] In this embodiment, “raising the pressure rod 51 to a certain height” specifically means raising the pressure rod 51 until the top of the pressure rod 51 abuts against the bottom of the cloth pushing and spreading device 1 .

[0167] Preferably, in this embodiment, the connecting rod 523 is disposed above the support frame 521. When the driving member 524 is in the initial position, the connecting rod 522 extends obliquely from bottom to top toward the filter cylinder 2, while the spring-type telescopic rod extends obliquely from bottom to top away from the filter cylinder 2. This further improves the smoothness of the driving member 524 driving the connecting rod 522 to rotate toward the side close to the filter cylinder 2.

[0168] like Figure 4 As shown, in this embodiment, the cloth pressing assembly is arranged on the side of the filter cylinder 2.

[0169] In this embodiment, when the pressure rod 51 is in the second position, the end of the pressure rod 51 close to the filter cylinder 2 is set outside the top outer edge of the filter cylinder 2, and the height of the pressure rod 51 is higher than the height of the filter cloth 71 above the first side of the filter cylinder 2.

[0170] In this embodiment, the filter cylinder 2 includes a third side and a fourth side perpendicular to the first side and the second side, the cloth pressing assembly is arranged outside the third side and / or the fourth side, and the extension direction of the pressing rod 51 is arranged perpendicular to the third side and the fourth side.

[0171] In this embodiment, if there is one cloth pressing assembly, when the pressing rod 51 is in the first position, the pressing plate extends to the edges on the opposite sides of the filter cylinder 2. Preferably, two cloth pressing assemblies are provided, one at the third side and the other at the fourth side, to press the filter cloth 71 from both sides.

[0172] Example 3

[0173] The cloth pushing and spreading device 1 of the sludge dewatering equipment in the prior art moves forward against the filter cloth 71 and spreads the material on the filter cloth 71 at the same time. The spreading port is used to press against the filter cloth so that the filter cloth is unwound from the cloth winding roller. The filter cloth below the spreading port is fitted with the spreading port. When the cloth pushing and spreading device feeds forward and spreads the material at the same time, it is easy to cause the material to adhere to the bottom of the cloth pushing and spreading device and the filter cloth above the spreading port.

[0174] In the prior art, to prevent material from sticking to the filter cloth 71 and the cloth-pushing and spreading device 1, a solution is generally adopted in which the cloth-pushing and spreading device spreads the material while retreating. That is, after the cloth-pushing and spreading device pushes the filter cloth forward to the farthest end, the second cloth-pressing assembly secures the filter cloth, creating a height difference between the filter cloth below the spreading opening and the spreading opening to accommodate the material flowing out of the spreading opening. The cloth-pushing and spreading device then retreats, spreading the material during the retreat process. This solution results in low spreading efficiency.

[0175] like Figures 1 to 14 As shown, in this embodiment, a cloth pushing and spreading device 1 of the sludge dewatering equipment described in Example 1 is introduced to solve the above-mentioned problems, which can not only ensure the efficiency of laying materials, but also improve the spreading effect of the cloth pushing and spreading device 1 on the filter cloth 71 and the material.

[0176] like Figures 1 to 3 、 Figures 11 to 14As shown, in this embodiment, the cloth pushing and spreading device 1 includes a spreading body 11, and a spreading opening 1121 is provided at the bottom of the spreading body 11. A cloth pushing head 113 extending downwardly and obliquely is provided at the front end of the spreading body 11, and a first end of the cloth pushing head 113 is connected to the spreading body 11, and a second end of the cloth pushing head 113 opposite to the first end of the cloth pushing head 113 is lower than the spreading opening 1121 at least when the cloth pushing head 113 abuts against the filter cloth 71.

[0177] In the above scheme, the front end of the material-laying body 11 is specifically the end of the material-laying body 11 facing the filter cylinder 2, that is, the end that abuts against the filter cloth 71 during the feeding process of the material-laying body 11. During the feeding process of the material-laying body 11, the cloth pushing head 113 at the front end of the material-laying body 11 presses against the filter cloth 71, so that the filter cloth 71 is dragged out from the cloth winding roller 7.

[0178] like Figure 1 and Figure 2 As shown, in the process of the cloth pushing head 113 at the front end of the material spreading body 11 pressing against the filter cloth 71 and dragging the filter cloth 71 out from the cloth winding roller 7, the filter cloth is wrapped around the front end of the material spreading body 11, and in the process of the material spreading body 11 feeding forward, the filter cloth slides along the front end of the material spreading body 11.

[0179] By setting a cloth pushing head 113 that extends downward in an inclined manner at the front end of the material spreading body 11, setting the material spreading opening 1121 at the bottom of the material spreading body 11 behind the cloth pushing head 113, and setting the second end of the cloth pushing head 113 to be lower than the material spreading opening 1121 when the cloth pushing head 113 abuts against the filter cloth 71, the cloth pushing head 113 drags the filter cloth 71 from the cloth winding roller 7 during the feeding and spreading process of the material spreading body 11, and uses the reaction force to flatten the filter cloth 71 below the material spreading body 11, and at the same time spreads the material on On the filter cloth 71 below the paving body 11, on the one hand, the laying effect of the filter cloth 71 can be guaranteed. On the other hand, the height difference between the second end of the cloth pushing head 113 and the paving port 1121 can reserve space for laying the material between the filter cloth 71 below the paving body 11 and the paving port 1121, which can avoid the material from sticking to the paving body 11 and improve the sludge spreading effect. Therefore, the material can be evenly spread between two adjacent layers of filter cloth 71, which is beneficial to improving the dehydration effect of the material.

[0180] Preferably, in this embodiment, at least when the cloth pushing head 113 abuts the filter cloth 71, the height difference between the second end of the cloth pushing head 113 and the material spreading opening 1121 is greater than the thickness of the material spread on the filter cloth, thereby further preventing the material from adhering to the material spreading body 11.

[0181] In some specific embodiments, the cloth pushing head 113 extends obliquely downward from the front end of the material spreading body 11, and the thickness of the cloth pushing head 113 in the direction perpendicular to the first end to the second end gradually decreases from the first end to the second end of the cloth pushing head 113. Specifically, the thickness of the cloth pushing head 113 gradually decreases in the direction away from the material spreading body 11.

[0182] Through the above-mentioned arrangement, when the cloth pushing head 113 of the material spreading body 11 pushes against the filter cloth 71 and feeds forward, so that the filter cloth 71 is dragged out from the cloth winding roller 7, the filter cloth 71 slides smoothly along the cloth pushing head 113, thereby reducing the resistance of the cloth pushing head 113 to the filter cloth 71. At the same time, it can avoid the filter cloth 71 from having excessive excess at the second side of the filter cylinder 2, and can make the filter cloth 71 above the material flat after the material spreading body 11 is retreated.

[0183] Preferably, in this embodiment, the second end of the cloth pushing head 113 is configured to be arc-shaped. Thus, the smoothness of the sliding of the filter cloth 71 along the second end of the cloth pushing head 113 can be further improved, and the cloth pushing head 113 can be prevented from damaging the filter cloth 71 during the cloth pushing process.

[0184] Preferably, in a direction perpendicular to the first end to the second end of the cloth pushing head 113 , the maximum thickness of the arc shape at the second end of the cloth pushing head 113 is smaller than the thickness of the first end of the cloth pushing head 113 .

[0185] In this embodiment, the cloth pushing head 113 can be set as a solid structure or a hollow structure.

[0186] In some specific embodiments, the second end of the cloth pushing head 113 is a solid cylinder 1134 whose diameter is smaller than the thickness of the front end of the material spreading body 11. The solid cylinder 1134 is connected to the material spreading body 11 through a support plate extending downward from the front end of the material spreading body 11. The end of the support plate away from the solid cylinder 1134 is the first end of the cloth pushing head 113.

[0187] Specifically, the solid column 1134 is arranged in front of the paving body 11, is spaced apart from the paving body 11, and is connected to the front end of the paving body 11 through the support plate.

[0188] In this embodiment, the solid cylinder 1134 constitutes the second end of the cloth pushing head 113, which can prevent the second end of the cloth pushing head from being deformed and improve the service life of the device.

[0189] In some possible embodiments, a support plate extends obliquely from the upper side of the solid column 1134 along the tangent direction of the solid body toward the upper edge of the front end of the paving body 11, and the end of the support plate is smoothly transitioned to the outer peripheral wall of the solid column 1134.

[0190] In other possible embodiments, the two support plates extend obliquely from the upper and lower sides of the solid column 1134 along the tangent direction of the solid body toward the upper and lower edges of the front end of the paving body 11; the ends of the support plates are smoothly transitioned to the outer peripheral wall of the solid column 1134.

[0191] Preferably, the diameter of the solid cylinder 1134 is smaller than the thickness of the front end of the material spreading body 11. The two support plates extend obliquely from the outer peripheral wall of the solid cylinder 1134 toward the upper and lower edges of the front end of the material spreading body 11, respectively. The end of the support plate distal from the solid body constitutes the first end of the cloth pushing head. One end of the support plate is integrally connected to the solid cylinder 1134, and the other end is connected to the front end of the material spreading body 11. The end of the support plate forms a smooth transition with the outer peripheral wall of the solid cylinder 1134, thereby forming a smooth surface at the second end of the cloth pushing head 113, thereby preventing scratches on the filter cloth 71 during the cloth pushing process.

[0192] Preferably, in this embodiment, the two support plates are tangent to the upper and lower sides of the solid column 1134 respectively.

[0193] Preferably, in this embodiment, a reinforcing plate 1133 is provided between the two support plates to reinforce the structure of the cloth pushing head 113 .

[0194] like Figure 12 As shown, in some specific embodiments, the extension length of the support plate connected to the solid column 1134 from the bottom of the solid column 1134 is smaller than the extension length of the support plate connected to the solid column 1134 from the top of the solid column 1134, and the reinforcing plate 1133 is arranged between the end of the support plate connected to the solid column 1134 from the bottom of the solid column 1134 away from the solid column 1134 and the middle part of the support plate connected to the solid column 1134 from the top of the solid column 1134.

[0195] In this embodiment, the cloth pushing head 113 and the material spreading body 11 can be connected as one body, or the cloth pushing head 113 and the material spreading body 11 can be arranged to rotate together.

[0196] Preferably, in this embodiment, at least the 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 transitionally connected to the paving body 11 .

[0197] Preferably, in this embodiment, the shape of one end of the cloth pushing head 113 connected to the material spreading body 11 is adapted to the shape of the front end of the material spreading body 11 .

[0198] In some possible embodiments, the cloth pushing head 113 is connected to the material spreading body 11 as a whole. Specifically, the two support plates of the cloth pushing head 113 are connected to the upper and lower edges of the front end of the material spreading body 11 at one end away from the solid cylinder 1134, respectively, and the second end of the cloth pushing head 113 is lower than the material spreading opening 1121.

[0199] In this embodiment, in order to prevent the cloth-pushing head 113 from scraping the material below the material-paving body 11, the material-paving body 11 can be controlled to rise when the material-paving body 11 retreats, or the cloth-pushing and material-paving device can be controlled to rise as a whole, or the movable bottom plate of the filter cylinder can be controlled to move downward, so that the cloth-pushing head 113 is away from the material laid on the filter cloth. In some preferred embodiments, the movable bottom plate is initially moved to a position slightly lower than the top of the filter cylinder 2, and the distance between the movable bottom plate and the top of the filter cylinder 2 is greater than or equal to the thickness of the material laid on the filter cloth 71; when the front end of the cloth-pushing and material-paving device 1 moves beyond the first side along the feed direction, the movable bottom plate of the filter cylinder 2 moves downward by a stroke that matches the sum of the thickness of the material laid on the filter cloth 71 and the thickness of the filter cloth 71.

[0200] Specifically, in this embodiment, the filter cylinder includes a cylinder body and a movable bottom plate located in the cylinder body. The cylinder body is a hollow cubic structure with water outlet holes on both sides. The top of the cylinder body is open, the movable bottom plate matches the cross-section of the cylinder inner cavity and can move up and down along the cylinder body, and the bottom of the cylinder body is open.

[0201] like Figure 13 and Figure 14 As shown, in some other possible embodiments, the cloth pushing head 113 is rotatably matched with the material spreading body 11. Thus, when the material spreading body 11 is fed forward, the cloth pushing head 113 can be controlled to rotate downward so that the second end of the cloth pushing head 113 is lower than the material spreading opening 1121, and a height difference greater than the thickness of the material spread on the filter cloth is formed between the cloth pushing head 113 and the material spreading opening 1121. When the material spreading body 11 is retracted, the cloth pushing head 113 can be controlled to rotate upward so that the second end of the cloth pushing head 113 is higher than the material on the filter cloth 71, which can prevent the cloth pushing head 113 from scraping the material below the material spreading body 11 and preventing the material from sticking to the cloth pushing head 113, thereby improving the material paving effect. At the same time, it is beneficial to increase the retraction speed of the material spreading body 11 and the material spreading rate.

[0202] Preferably, in this embodiment, the cloth pushing head 113 includes a first position for rotating upward to an upper limit, and a second position for rotating downward to a lower limit. When the cloth pushing head 113 is in the first position and the second position, the height difference of the second end of the cloth pushing head 113 is greater than the thickness of the material laid on the filter cloth.

[0203] In this embodiment, a structure for driving the cloth pushing head 113 to rotate between the first position and the second position may be provided between the cloth pushing head 113 and the material spreading body 11 .

[0204] In this embodiment, the cloth pushing head 113 can be driven by a separate small motor.

[0205] Preferably, in this embodiment, an elastic member is provided between the cloth pushing head 113 and the material spreading body 11, and the elastic member is used to drive the cloth pushing head 113 to rotate toward the first position. During the forward feeding of the material spreading body 11, the reaction force exerted by the filter cloth 71 on the cloth pushing head 113 is greater than the elastic force of the elastic member, and the cloth pushing head 113 is driven to rotate toward the second position by the reaction force of the filter cloth 71. Thus, the cloth pushing head 113 can be automatically switched between the first position and the second position, and can match the cloth pushing and spreading action of the material spreading body 11.

[0206] Specifically, in this embodiment, when the cloth pushing head 113 rotates to the first position, the height of the axis of the solid cylinder 1134 is lower than the height of the rotation center of the cloth pushing head 113, thereby ensuring that the cloth pushing head 113 can smoothly rotate to the second position under the reaction force of the filter cloth 71.

[0207] In some possible embodiments, a limiting structure is provided between the cloth pushing head 113 and the material spreading body 11 for limiting the upper limit position of the cloth pushing head 113 when rotating upward and the lower limit position of the cloth pushing head when rotating downward.

[0208] In some specific embodiments, the cloth pushing head 113 is installed at the front end of the material spreading body 11 through a rotating shaft, and the axis of the rotating shaft extends laterally perpendicular to the feeding direction of the material spreading body 11, and the limiting structure includes a first limiting structure for limiting the upper limit position of the upward rotation of the cloth pushing head 113, and the first limiting structure limits the cloth pushing head 113 to the first position, and a second limiting structure for limiting the lower limit position of the downward rotation of the cloth pushing head 113, and the second limiting structure limits the cloth pushing head 113 to the second position.

[0209] In some possible embodiments, the limiting structure may be provided between the rotating shaft and the bushing on the cloth pushing head 113 .

[0210] like Figure 13 and Figure 14As shown, in other possible embodiments, the front end surface of the paving body 11 can be used to limit the rotation of the cloth pushing head 113. Specifically, the rotating shaft can be set between the middle part of the front end surface of the paving body 11 and the cloth pushing head 113, and a gap for the cloth pushing head 113 to rotate is set between the cloth pushing head 113 and the paving body 11. When the cloth pushing head 113 rotates to the first position, the upper end of the cloth pushing head 113 on the side close to the paving body 11 abuts against the front end of the paving body 11. When the cloth pushing head 113 rotates to the second position, the lower end of the cloth pushing head 113 on the side close to the paving body 11 abuts against the front end of the paving body 11.

[0211] Preferably, in this embodiment, the upper edge of the front end of the material spreading body 11 and / or the upper edge of the first end of the cloth pushing head are provided with arc-shaped chamfers to avoid scratching the filter cloth.

[0212] In this embodiment, the elastic member used to drive the cloth pushing head 113 to rotate toward the first position may be a torsion spring.

[0213] Preferably, in this embodiment, the top of the working end of the first cloth pressing assembly 5 is substantially flush with the bottom of the second end of the cloth pushing head 113 , thereby enabling the filter cloth 71 below the material spreading body 11 to be substantially level.

[0214] Specifically, when the working end of the first cloth pressing assembly 5 presses the filter cloth 71 on the first side of the filter cylinder 2 onto the filter cylinder 2, the top of the working end of the first cloth pressing assembly 5 is slightly lower than the bottom of the second end of the cloth pushing head 113, allowing the cloth pushing head 113 to pass smoothly.

[0215] Preferably, in this embodiment, the height difference between the bottom of the second end of the cloth pushing head 113 and the top of the working end of the first cloth pressing assembly 5 is greater than or equal to the thickness of the filter cloth 71 .

[0216] Preferably, in this embodiment, the material spreading opening 1121 is arranged at the bottom of the material spreading body 11, close to the front end of the material spreading body 11, that is, the material spreading opening 1121 is arranged close to the cloth pushing head 113, so that the material can be spread all over the filter cloth 71 below, making the structure compact.

[0217] In this embodiment, a dehydration device for water-containing materials is also provided, which includes a filter cylinder 2 and the above-mentioned cloth pushing and spreading device 1 installed on one side of the top of the filter cylinder 2. The spreading body 11 of the cloth pushing and spreading device 1 reciprocates above the filter cylinder 2, laying the filter cloth 71 in layers in the filter cylinder 2 and spraying the material onto the filter cloth 71.

[0218] Specifically, the material spreading body 11 sprays the material onto the filter cloth 71 during the feeding process, and stops spraying the material onto the filter cloth 71 during the retreat process.

[0219] Preferably, the moving speed of the paving body 11 when retreating is greater than or equal to the moving speed of the paving body 11 when advancing.

[0220] Preferably, in this embodiment, the paving body 11 extends in a horizontal direction.

[0221] Preferably, in this embodiment, a notch is provided in the middle of the second end of the cloth pushing head 113, which is adapted to the shape of the working end of the second cloth pressing assembly provided on the side of the filter cylinder 2 away from the cloth pushing and spreading device, for the working end of the second cloth pressing assembly to pass through and press the filter cloth 71 covered on the second end of the cloth pushing head 113 onto the filter cylinder 2.

[0222] Specifically, the notch passes through the cloth pushing head 113 in a vertical direction perpendicular to the first end to the second end of the cloth pushing head 113, and the opening of the notch faces in a direction away from the first end of the cloth pushing head 113; preferably, a second cloth pressing assembly is provided on the side of the filter cylinder 2 away from the cloth pushing and spreading device; along the horizontal direction perpendicular to the first end to the second end of the cloth pushing head 113, the width of the working end of the second cloth pressing assembly is smaller than the width of the notch; the working end of the second cloth pressing assembly passes through the notch from top to bottom, pressing the filter cloth 71 covered on the second end of the cloth pushing head 113 tightly against the filter cylinder 2.

[0223] In this embodiment, when the material spreading body reaches the second side of the filter cylinder 2, that is, when the cloth pushing head 113 reaches the second side of the filter cylinder 2, the working end of the second cloth pressing assembly 6 passes through the notch from top to bottom and presses the bent part of the filter cloth against the filter cylinder.

[0224] By setting, the thickness of the cloth pushing head 113 in the direction perpendicular to the first end to the second end gradually decreases from the first end to the second end, which can facilitate the working end of the second cloth pressing assembly 6 to pass through the notch, press the filter cloth, and improve the smoothness of the cloth pressing.

[0225] In this embodiment, a material laying pipe 112 is provided in the shell 111 of the material laying body 11. The material laying pipe 112 includes a reducing section and an output section, each of which has a channel. A material laying port 1121 is provided at the second end of the output section. The second end of the reducing section is connected to the first end of the output section, so that the reducing section channel is connected to the output section channel.

[0226] The channels of the output section have the same cross-section perpendicular to the direction of material flow, and the bottom surface of the output section that carries the material is flat. The cross-sectional area of ​​the channel of the variable diameter section at the second end is less than or equal to the cross-sectional area at the first end, and the vertical cross-sectional area of ​​the channel of the output section is the same as the vertical cross-sectional area of ​​the channel of the variable diameter section at the second end.

[0227] In which, in the horizontal direction perpendicular to the material flow direction, the width of the second end of the variable diameter section 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 channel is less than the height of the first end.

[0228] The device can spread water-containing materials (such as sludge) on the filter cloth more evenly.

[0229] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments with equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A cloth pressing assembly, comprising a pressing rod (51) extending in a horizontal direction for pressing a filter cloth (71), wherein the length direction of the pressing rod (51) is arranged at an angle to the laying direction of the filter cloth (71); It is characterized in that It also includes a limiting component (55) which is arranged at least on one side of the pressure rod (51) in the laying direction of the filter cloth (71), and the limiting component (55) is in contact with the pressure rod (51).

2. The cloth pressing assembly according to claim 1, characterized in that: The side of the limiting member (55) facing the pressure rod (51) is set as a plane perpendicular to the laying direction of the filter cloth (71).

3. The cloth pressing assembly according to claim 2, characterized in that: The limiting member (55) comprises: The first plate (55-1) is perpendicular to the laying direction of the filter cloth (71) and is in contact with the pressure rod (51) on one side thereof. The second plate (55-2) is arranged at any one end of the first plate (55-1) or at both ends of the first plate (55-1), and extends in a direction away from the pressure rod (51). A reinforcing rib (55-3) is arranged between the first plate (55-1) and the second plate (55-2).

4. The cloth pressing assembly according to any one of claims 1 to 3, characterized in that: There are two limiting components (55), including: A first limiting member (551) is provided on one side of the pressure rod (51) facing the laying direction of the filter cloth (71); The second limiting member (552) is arranged on the side of the pressure rod (51) opposite to the laying direction of the filter cloth (71), 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).

5. The cloth pressing assembly according to any one of claims 1 to 3, characterized in that: The side wall of the pressure rod (51) close to the limiting member (55) is set as a plane that fits the limiting member (55).

6. The cloth pressing assembly according to any one of claims 1 to 3, characterized in that: The pressing rod (51) presses the filter cloth (71) onto the filter cylinder (2), and the limiting member (55) is arranged near the edge of the filter cylinder (2).

7. The cloth pressing assembly according to claim 6, characterized in that: The pressing rod (51) includes a first position where the filter cloth (71) is pressed against the filter cylinder (2), and a second position where the projection of the pressing rod (51) in the horizontal direction falls outside the filter cloth (71). When the pressing rod (51) is in the second position, the pressing rod (51) and the limiting member (55) are at least partially in contact with each other.

8. The cloth pressing assembly according to claim 7, characterized in that: A driving transmission device (52) for driving the pressure rod (51) to move between a first position and a second position is provided on a side of the limiting member (55) away from the filter cylinder (2). The driving transmission device (52) includes: Support frame (521); A parallelogram mechanism is provided on a support frame (521), comprising two connecting rods (522) respectively hinged to the support frame (521), parallel to each other and of equal length, and a connecting rod (523) having two ends respectively hinged to one end of the two connecting rods (522) away from the support frame (521); The driving member (524) reciprocates in a direction approaching and away from the filter cylinder (2); the pressing rod (51) is arranged on the connecting rod (523) and is slidable along the length direction of the connecting rod (523); The driving member (524) is in transmission connection with the pressure rod (51), driving the pressure rod (51) to move back and forth in the direction of approaching and moving away from the filter cylinder (2); the driving member (524) is in transmission connection with the connecting rod (522), driving the pressure rod (51) to press down or lift up through the parallelogram mechanism.

9. The cloth pressing assembly according to claim 6, characterized in that: The pressure rod (51) is configured to be 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).

10. A dehydration device for water-containing materials, comprising a filter cylinder (2), and a cloth-pushing and spreading device (1) arranged on one side of the filter cylinder (2) for laying filter cloths (71) in layers in the filter cylinder (2) and spraying material onto the filter cloths (71), characterized in that: The top of the filter cylinder (2) is provided with a cloth pressing assembly according to any one of claims 1 to 9, and the cloth pressing assembly is provided on the top of the filter cylinder (2) and on one side close to the cloth pushing and spreading device (1).

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