Cloth pressing assembly of dehydration equipment and control method of dehydration equipment

Abstract

The invention provides a cloth pressing assembly of dewatering equipment and a control method of the dewatering equipment, the cloth pressing assembly of the dewatering equipment comprises a pressing rod and further comprises a supporting frame, a connecting frame rod is hinged to the supporting frame, the other end of the connecting frame rod is hinged to a connecting rod, the connecting rod is arranged above or below the supporting frame, and the connecting rod can slide in the length direction of the pressing rod along the pressing rod; the driving piece is in sliding connection with the pressing rod through a guide assembly, the extending direction of the guide assembly is parallel to the rotating face of the connecting frame rod, and the guide assembly and the connecting rod are arranged at an angle; the moving path of the driving piece is parallel to the connecting rod, the driving piece drives the connecting frame rod to rotate in the process of driving the pressing rod to slide along the connecting rod, and the connecting rod slides along the pressing rod to drive the pressing rod to slide along the guide assembly. Through the arrangement, one power source can be used for driving the driving piece to move towards the direction close to the filter cylinder, so that the pressing rod is fed towards the direction close to the filter cloth and is pressed downwards, the power source for driving the pressing rod is reduced, the cost of equipment is favorably reduced, and a control system of the cloth pressing assembly is simplified.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a cloth pressing component of a dewatering device, and also relates to a control method of the dewatering device equipped with the cloth pressing component. Background Art

[0002] The moisture content of residual sludge is generally above 80%. Sludge dehydration is a key step in its treatment process. However, the difficulty of deep dehydration of sludge has become a bottleneck problem restricting the harmless and resourceful treatment of sludge.

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

[0004] The filter cloth of the stacking and squeezing device is generally an ultra-long continuous filter cloth. During the working process, multiple layers of filter cloth need to be stacked and spread, and the sludge is evenly spread between the filter cloths. When stacking filter cloths and spreading materials, a cloth pressing assembly is required to fix the filter cloth, which is mainly composed of two sets of front and rear cloth pressing assemblies. During the spreading process, the filter cloth is fixed by the front and rear sets of cloth pressing assemblies.

[0005] Specifically, the proximal end of the filter cloth is first pressed by the front cloth pressing assembly, 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 pressed onto the upper layer of filter cloth.

[0006] However, the front cloth pressing assembly of the existing stacking and squeezing device usually requires two power sources to drive in order to ensure the pressing effect on the filter cloth. For example, the Chinese utility model patent with application number CN202023099235.0 discloses a fixing device for stacking filter cloth, in which the front pressing rod mechanism includes a vertical lifting mechanism and a horizontal telescopic mechanism to control the four movement positions of the horizontal pressing rod. This solution requires two power sources, which is not conducive to reducing the cost of the equipment and simplifying the control system.

[0007] Therefore, designing a cloth pressing assembly of a dewatering equipment that can utilize a power source to drive the pressing rod of the cloth pressing assembly to feed and press down, and realize fixing of one end of the filter cloth close to the sludge spreading mechanism, has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0008] The invention provides a cloth pressing assembly of a dehydration device, which is used to solve the problems of high cost and complex control caused by the need for two power sources to drive the existing cloth pressing assembly.

[0009] One purpose of the present invention is to solve the problem of how to use a power source to drive the pressing rod of the cloth pressing assembly to feed and press down in the direction close to the filter cloth, so as to fix one end of the filter cloth close to the cloth pushing and spreading device.

[0010] Another object of the present invention is to solve the problem of how to prevent the pressure rod from lifting the end of the filter cloth close to the cloth pushing and spreading device too high during the resetting process of the pressure rod.

[0011] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0012] The cloth pressing assembly of the dewatering equipment includes a pressing rod and also includes: a supporting frame, on which a connecting rod is hinged, and a connecting rod is hinged at the other end of the connecting rod, the connecting rod is arranged above or below the supporting frame, and the connecting rod can slide along the length direction of the pressing rod; a driving member is slidably connected to the pressing rod through a guide assembly, and the extension direction of the guide assembly is parallel to the rotating surface of the connecting rod and is arranged at an angle to the connecting rod; the moving path of the driving member is parallel to the connecting rod, and in the process of the driving member driving the pressing rod to slide along the connecting rod, the connecting rod is driven to rotate, and the connecting rod slides along the pressing rod, driving the pressing rod to slide along the guide assembly.

[0013] Furthermore, the driving member is arranged at the first end of the pressure rod and is provided with an abutment portion corresponding to a side of the second end of the connecting rod away from the pressure rod; on the movement path of at least part of the driving member toward the second end of the pressure rod, the abutment portion slides and cooperates with the side of the second end of the connecting rod away from the pressure rod, driving the connecting rod to rotate toward the second end of the pressure rod; preferably, during the process of the driving member moving toward the second end of the pressure rod, the first working state of the driving member is that the abutment portion is spaced apart from the connecting rod; the second working state of the driving member is that the abutment portion slides and cooperates with the side of the second end of the connecting rod away from the pressure rod, driving the connecting rod to rotate toward the second end of the pressure rod.

[0014] In the above scheme, the second end of the pressure rod is the end close to the filter cloth, and the “direction of the second end of the pressure rod” is the “direction close to the filter cloth”, that is, the “direction close to the filter cylinder”; the first end of the pressure rod is the end away from the filter cloth, and the “direction of the first end of the pressure rod” is the “direction away from the filter cloth”, that is, the “direction away from the filter cylinder”.

[0015] Furthermore, the surface of the driving member for contacting with the connecting rod is configured as an arc-shaped surface.

[0016] Furthermore, a support frame is provided on the support frame, which protrudes in a direction close to the connecting rod and extends in a direction parallel to the connecting rod, and the driving member is slidably provided on the support frame.

[0017] Furthermore, the connecting rod includes a first rod portion and a second rod portion clamped on both sides of the connecting rod, and the supporting frame at least partially extends between the first rod portion and the second rod portion; preferably, the driving member includes a first abutting portion and a second abutting portion corresponding to the first rod portion and the second rod portion respectively, and a gap corresponding to the supporting frame is provided between the first abutting portion and the second abutting portion.

[0018] Further, the connecting rod is provided with a plurality of connecting rods arranged at intervals along the length direction of the connecting rod, and each connecting rod is of equal length and parallel to each other; or, the connecting rod is provided with a plurality of groups arranged at intervals along the length direction of the connecting rod, each group of connecting rods is of equal length and parallel to each other, and each group of connecting rods includes a first rod portion and a second rod portion clamped on both sides of the connecting rod; preferably, two groups of connecting rods are provided, which are respectively connected between the two ends of the connecting rod and the support frame, forming a parallelogram mechanism on the support frame.

[0019] Furthermore, an elastic member is provided between at least one connecting rod and the support frame for driving the connecting rod to rotate toward the first end of the pressure rod; preferably, the elastic member comprises a spring-type telescopic rod whose two ends are respectively hinged to the support frame and the connecting rod.

[0020] Furthermore, the guide assembly includes: a slide rail, which is arranged on the driving member or the first end of the pressure rod and is arranged at an angle to the connecting rod; a slide sleeve, which corresponds to the slide rail, is arranged on the first end of the pressure rod or the driving member, and is sleeved on the slide rail; preferably, the extension direction of the slide rail is perpendicular to the connecting rod.

[0021] Furthermore, the connecting rod is arranged above the supporting frame, and when the driving member is in the initial position, the connecting rod extends obliquely from bottom to top toward the direction close to the filter cloth.

[0022] The present invention also provides a control method for a dewatering device, the dewatering device comprising a filter cylinder, wherein a cloth pressing assembly of the above-mentioned dewatering device is installed at a first side of the filter cylinder close to a cloth pushing and spreading device, and the control method comprises: before the cloth pushing and spreading device feeds from the first side of the filter cylinder to the second side away from the cloth pushing and spreading device, the cloth pressing assembly presses the filter cloth onto the filter cylinder; during a process in which the cloth pushing and spreading device retreats from the second side of the filter cylinder, the driving member moves in a direction away from the filter cloth, and the cloth pushing and spreading device is used to limit the lifting height of the pressure rod during the process of pulling the pressure rod out of the filter cloth.

[0023] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art.

[0024] 1. In the present invention, during the process of the driving member moving toward the direction approaching the filter cloth, the driving member pushes the pressure rod to slide along the connecting rod through the guide assembly and feeds it toward the direction approaching the filter cloth. During the process of driving the connecting rod to rotate, under the guiding action of the guide assembly, the connecting rod drives the pressure rod to move horizontally along the guide assembly without generating rotation. The connecting rod can drive the pressure rod to press the filter cloth against the filter cylinder. Thus, the pressure rod can be driven by a power source to feed and press down toward the direction approaching the filter cloth, thereby reducing the power source used to drive the pressure rod, which is beneficial to reducing the cost of the equipment and simplifying the control system of the cloth pressing assembly.

[0025] 2. The present invention controls the driving member to move away from the filter cylinder and draws the pressure rod out of the filter cloth during the process of the cloth pushing and spreading device retreating from the second side of the filter cylinder. This can prevent the end of the filter cloth close to the cloth pushing and spreading device from being lifted too high during the process of the pressure rod moving to the second position, thereby ensuring the flatness of the material on the filter cloth.

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0028] Figure 1 It is a cross-sectional schematic diagram of a dehydration device in an embodiment of the present invention;

[0029] Figure 2 For the embodiment of the present invention Figure 1 The enlarged view of point B in the middle;

[0030] Figure 3 It is a structural schematic diagram of a sludge dewatering device in an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the installation structure of the cloth pressing assembly in an embodiment of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the first cloth pressing assembly when a connecting rod is provided in an embodiment of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the first cloth pressing assembly when two connecting rods are provided in an embodiment of the present invention;

[0034] Figure 7It 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 invention;

[0035] Figure 8 It is a structural schematic diagram of the case where the driving member switches to the second working state during the cloth pressing process of the first cloth pressing assembly in an embodiment of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the first cloth pressing assembly when the pressing rod is in the first position in an embodiment of the present invention;

[0037] Fig.10 It is a structural schematic 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;

[0038] Fig.11 It is a cross-sectional schematic diagram of the paving body in the embodiment of the present invention;

[0039] Fig.12 For the embodiment of the present invention Fig.11 The enlarged view of point A in the middle;

[0040] Fig.13 It is a structural schematic diagram of the cloth pushing head in the first position according to the embodiment of the present invention;

[0041] Fig.14 It is a structural schematic diagram of the cloth pushing head in the second position according to the embodiment of the present invention.

[0042] Description of the main components in the figure:

[0043] 1. cloth-pushing and spreading device; 11. spreading body; 111. shell; 112. spreading pipe; 1121. spreading port; 113. cloth-pushing head; 1133. reinforcing plate; 1134. solid column; 2. filter cylinder; 4. frame; 41. cloth-guiding roller; 5. first cloth-pressing assembly; 51. pressing rod; 52. driving transmission device; 521. supporting frame; 5211. supporting 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.

[0044] 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 are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] 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.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 14 As shown, in an embodiment of the present invention, a sludge dewatering device is introduced, including a cloth pushing and spreading device 1 and a filter cylinder 2. The cloth pushing and spreading device 1 spreads a filter cloth 71 in the filter cylinder 2 and sprays the material to be processed onto the filter cloth 71.

[0049] During the spreading process, the filter cloth 71 is fixed by two sets of cloth pressing assemblies.

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

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

[0052] The 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 .

[0053] One or more cloth guide rollers 41 are arranged between the cloth rolling roller 7 and the filter cylinder. After the filter cloth 71 passes around the cloth guide roller 41, the first cloth pressing assembly 5 presses the filter cloth onto the filter cylinder.

[0054] During the process of laying the filter cloth 71 from the first side to the second side of the filter cylinder 2, when the cloth pushing and spreading device 1 is outside the filter cylinder 2, the first cloth pressing assembly 5 presses the filter cloth 71 on the first side down on the filter cylinder 2; the cloth pushing and spreading device 1 moves toward the second side of the filter cylinder 2 against the filter cloth 71, and at the same time, spreads the material evenly on the filter cloth 71, and the other end of the filter cloth 71 is dragged out from the cloth winding roller 7; when reaching the second side of the filter cylinder 2, the second cloth pressing assembly 6 presses the filter cloth 71 on the second side down on the filter cylinder 2, and the cloth pushing and spreading device 1 returns to its original position.

[0055] During the retreat of the cloth pushing and spreading device 1, and / or after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 is pulled out; after the cloth pushing and spreading device 1 exits the filter cylinder 2, the first cloth pressing assembly 5 is activated again to press the filter cloth 71 on the first side down on the filter cylinder 2.

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

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

[0058] 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.

[0059] In this embodiment, the sludge dewatering equipment is preferably used for solid-liquid separation of sludge with high water content.

[0060] In this embodiment, in order to ensure the wrapping of the material, the width of the filter cloth is set to be greater than the width of the internal space of the filter cylinder, and the width of the spreading opening of the cloth-pushing and spreading device is less than or equal to the width of the internal space of the filter cylinder. After the cloth-pushing and spreading device 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 side edges of the filter cloth are bent upward under the obstruction of the filter cylinder, and the material is wrapped from both sides of the material to prevent the material from flowing out from both sides of the filter cloth.

[0061] In some preferred embodiments, there is a certain interval 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, 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.

[0062] Embodiment 1

[0063] 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 against 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.

[0064] like Figures 1 to 10 As shown, in an embodiment of the present invention, a cloth pressing assembly of a dehydration device is 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 on the first side of the filter cylinder 2.

[0065] In this embodiment, the cloth pressing assembly is specifically a first cloth pressing assembly.

[0066] 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.

[0067] 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, the connecting rod 523 is sleeved on the pressure rod 51, the connecting rod 523 is arranged above or below the support frame 521, and the connecting rod 523 can slide along the length direction of the pressure rod 51.

[0068] The driving member 524 is slidably connected to the pressure rod 51 through the guide assembly 54. The extension direction of the guide assembly 54 is parallel to the rotation surface of the connecting rod 522, and the guide assembly 54 is set at an angle to the connecting rod 523. The moving path of the driving member 524 is parallel to the extension direction of the connecting rod 523. The driving member 524 reciprocates along the length direction of the pressure rod 51 under the drive of the power source 53, that is, reciprocates along the direction of approaching and moving away from the filter cloth. In the process of the driving member 524 driving the pressure rod 51 to slide along the connecting rod 523, the connecting rod 522 is driven to rotate, and the connecting rod 523 slides along the pressure rod 51 to drive the pressure rod 51 to slide along the guide assembly 54.

[0069] 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 second end of the pressure rod 51, the driving member 524 pushes the pressure rod 51 to slide along the connecting rod 523 through the guide assembly 54, and feeds toward the second end of the pressure rod 51. 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, so that the distance between the connecting rod 523 and the support frame 521 can be changed. Driven by the connecting rod 523, the pressure rod 51 presses the filter cloth 71 onto the filter cylinder 2.

[0070] 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 of the second end and the first end of the pressure rod 51, so that the pressure rod 51 can be fed and pressed downward in the direction of the second end of the pressure rod 51, and the pressure rod 51 can be retreated and lifted in the direction of the first end of the pressure rod 51, 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.

[0071] In this embodiment, "the direction of the second end of the pressure rod" is "the direction close to the filter cloth", that is, "the direction close to the filter cylinder", and "the direction of the first end of the pressure rod" is "the direction away from the filter cloth", that is, "the direction away from the filter cylinder".

[0072] 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 pressed down 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.

[0073] 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.

[0074] 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 arranged on the filter cylinder 2, or can be arranged separately.

[0075] In this embodiment, with regard to the setting form of the connecting rod 523 and the support frame 521 of the driving transmission device 52, the pressure rod 51 can be set above the support frame 521, and the pressure rod 51 can also be set below the support frame 521. It is only necessary to ensure that during the rotation of the connecting rod 522 in the direction close to the filter cylinder 2, the connecting rod 523 can drive the pressure rod 51 to press down and press the filter cloth 71 against the filter cylinder 2, and during the rotation of the connecting rod 522 in the direction away from the filter cylinder 2, the connecting rod 523 can drive the pressure rod 51 to lift up.

[0076] 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 feeding length of the pressure rod 51 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 clamping force of the pressure rod 51 on the filter cloth 71, thereby ensuring the clamping effect on the filter cloth 71.

[0077] In some preferred embodiments, the pressing rod 51 is arranged above the supporting 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 .

[0078] In this embodiment, regarding the location of the drive transmission device 52, the connecting rod 523 of the drive transmission device 52 can be arranged above the upper edge of the filter cylinder 2, or below the upper edge of the filter cylinder 2, and it is only necessary to ensure that the working end of the pressing rod 51 extends above the upper edge of the filter cylinder 2. The working end of the pressing rod 51 is an end of the pressing rod 51 used to press the filter cloth 71.

[0079] 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. Thus, the force effect of the driving transmission device 52 on the pressure rod 51 can be improved, and the structure of the sludge dewatering equipment can be made compact.

[0080] In this embodiment, for the structure of the pressure rod 51, the extension direction of the pressure rod 51 is set at an angle with the length direction of the filter cloth 71. The pressure rod 51 can be set as a straight rod or a bent rod, and it is only necessary to ensure that the pressure rod 51 and the connecting rod 523 are matched at a straight rod. The end of the pressure rod 51 close to the filter cylinder 2 is the working end of the pressure rod 51. Preferably, the working end of the pressure rod 51 is set perpendicular to the length direction of the filter cloth 71.

[0081] 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.

[0082] 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 .

[0083] In some possible embodiments, the power source 53 can be a retractable device, specifically, a cylinder, a hydraulic cylinder, etc., or a linear motor or other device, 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.

[0084] Preferably, in some specific embodiments, the power source 53 is configured as a hydraulic cylinder, the hydraulic cylinder is fixed on the support frame 521, and the working end of the hydraulic cylinder is connected to the driving member 524, so as to drive the driving member 524 to reciprocate in the direction of approaching and moving away from the filter cylinder 2. The extension direction of the hydraulic cylinder is parallel to the extension direction of the pressure rod 51.

[0085] like Figures 7 to 10 As shown, in some specific embodiments, the driving member 524 is arranged at one end of the pressure rod 51 away from the filter cylinder 2, and on at least a portion of the moving path of the driving member 524 toward the filter cylinder 2, the driving member 524 abuts and slides with the side of the connecting rod 522 away from the filter cylinder 2, driving the connecting rod 522 to rotate toward the filter cylinder 2. Thus, the displacement of the pressure rod 51 in the horizontal direction and in the vertical direction can be carried out synchronously or successively.

[0086] Preferably, in the present embodiment, taking into account the cloth pressing method of the cloth pressing assembly, when pressing the cloth, the driving member 524 can be arranged to first drive the pressing rod 51 to feed in a direction close to the filter cylinder 2. 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 a direction close to the filter cylinder 2, driving the connecting rod 522 to rotate in a direction close to the filter cylinder 2, so that the pressing rod 51 presses the filter cloth 71 against the filter cylinder 2, thereby ensuring that the pressing rod 51 has sufficient length to press the filter cloth 71.

[0087] 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 with the connecting rod 522 to drive the connecting rod 522 to rotate in the direction approaching the filter cloth 71.

[0088] In this embodiment, the process of the driving member 524 moving toward the direction approaching 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 is slidingly matched with the connecting rod, driving the connecting rod to rotate toward the direction approaching the filter cloth.

[0089] During the process of the driving member 524 moving toward the filter cylinder 2, when it is in the first working state, the driving member 524 only drives the pressing rod 51 to feed toward the filter cylinder 2. During the process of the driving member 524 moving toward the filter cylinder 2, when it is in the second working state, the driving member 524 not only drives the pressing rod 51 to feed toward the filter cylinder 2, but also drives the connecting rod 522 to rotate toward the filter cylinder 2, and drives the pressing rod 51 to press downward through the connecting rod 523. Therefore, the length of the pressing rod 51 feeding toward the filter cylinder 2 can be increased or shortened by setting the path length of the driving member 524 moving toward the filter cylinder 2 in the first working state.

[0090] In this embodiment, the driving member 524 is connected to the pressure rod 51 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 .

[0091] 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 arranged on the end of the pressure rod 51 away from the filter cylinder 2 or the driving member 524 corresponding to the slide rail 541, and the slide sleeve 542 is sleeved on the slide rail 541.

[0092] 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.

[0093] Preferably, in this embodiment, the slide rail 541 is disposed on the driving member 524 , and the slide sleeve 542 is disposed at an end of the pressure rod 51 away from the filter cylinder 2 .

[0094] Preferably, in this embodiment, the extending direction of the slide rail 541 is perpendicular to the connecting rod 523 .

[0095] In this embodiment, when the driving member is in the first working state, the horizontal distance between the sliding sleeve and the end of the connecting rod away from the filter cylinder is greater than or equal to the horizontal distance between the abutting portion 5241 and the connecting rod.

[0096] Preferably, when the driving member is in the first working state, the connecting rod extends obliquely from bottom to top toward the filter cylinder.

[0097] In this embodiment, along the length direction of the connecting rod, the slide rail and the abutment portion 5241 are staggered, the slide rail is arranged at one end of the driving member close to the filter cylinder, and the abutment portion 5241 is arranged at one end of the driving member away from the filter cylinder.

[0098] 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 arranged on the support frame 5211, and the support frame 5211 supports and guides the driving member 524.

[0099] In some possible embodiments, the connecting rod is arranged above the support frame, and the vertical distance between the end of the pressing rod close 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 away from the filter cylinder and the top of the support frame. Thus, it can be ensured that the connecting rod can drive the pressing rod to press the filter cloth on the filter cylinder.

[0100] Preferably, when the pressure rod presses the filter cloth against the top of the filter cylinder, one 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.

[0101] 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.

[0102] 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.

[0103] 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, and a gap corresponding to the supporting frame 5211 is provided between the first abutting portion and the second abutting portion.

[0104] 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, protrudes upward from the support frame 521, and extends 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.

[0105] The driving member 524 extends along the length direction of the supporting 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 supporting 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.

[0106] 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.

[0107] 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 .

[0108] The connecting rod 522 can be provided as one or a group, or can be provided as a plurality of connecting rods or a plurality of groups arranged at intervals along the length direction of the connecting rod 523. When the connecting rod 522 is provided as a plurality of connecting rods or a plurality of groups, each connecting rod 522 is of equal length and parallel to each other.

[0109] Specifically, the connecting rod 522 is provided with a plurality of connecting rods 522 arranged at intervals along the length direction of the connecting rod 523, each connecting rod 522 is of equal length and parallel to each other, and the plurality of connecting rods 522 may be a plurality of first rod portions or second rod portions. Alternatively, the connecting rod 522 is provided with a plurality of groups arranged at intervals along the length direction of the connecting rod 523, each group of connecting rods 522 is of equal length and parallel to each other, and each group of connecting rods 522 includes a first rod portion and a second rod portion clamped on both sides of the connecting rod 523.

[0110] 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, so that during the rotation of the connecting rod 522, the connecting rod 523 only pulls down or lifts the pressure rod 51.

[0111] 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.

[0112] 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.

[0113] 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 , and the elastic member 525 is disposed between at least one connecting rod 522 and the support frame 521 .

[0114] Preferably, the elastic member 525 is disposed between any set of connecting rods 522 and the supporting frame 521 .

[0115] 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 a tension spring arranged between the connecting rod 522 and the support frame 521, and it only needs to be able to drive the connecting rod 522 to rotate away from the filter cylinder 2.

[0116] like Figure 5 and Figure 6 As shown, in some specific embodiments, the elastic member 525 is configured as a spring-type telescopic rod, and the spring-type telescopic rod is arranged on the side of the connecting rod 522 close to the filter cylinder 2, 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.

[0117] 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 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.

[0118] Preferably, in some possible embodiments, the cloth pressing assembly is arranged at a first side edge of the filter cylinder 2 close to the cloth pushing and spreading device 1 .

[0119] Before the cloth-pushing and spreading device 1 is fed 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 retreating 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 is used to limit the lifting height of the pressing rod 51 during the process of being drawn out of the filter cloth 71.

[0120] Specifically, 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 up. 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 out 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 lifts 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.

[0121] In this embodiment, before the cloth pushing head 113 of the cloth pushing and spreading device 1 moves to the first side edge, the pressing rod 51 can be completely pulled out from both sides of the cloth pushing and spreading device 1 .

[0122] like Figure 6 As shown, specifically, in this embodiment, the parallelogram mechanism is vertically arranged, that is, the support frame 521 and the connecting rod 523 are in the same vertical plane, and the two mutually 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 where the parallelogram mechanism is located is perpendicular to the length of the filter cloth 71.

[0123] 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 axis.

[0124] The connecting rod 523 is parallel to the top of the filter cylinder 2. Specifically, it extends in the horizontal direction.

[0125] The connecting rod 523 is configured to be cylindrical, and the pressure rod 51 is configured to be a straight rod extending in the horizontal direction and parallel to the connecting rod 523. The shape of the radial cross section of the pressure rod 51 is the same as the inner peripheral shape of the radial cross section of the connecting rod 523. The length of the pressure rod 51 is greater than the length of the connecting rod 523. The pressure rod 51 penetrates the connecting rod 523 from the end of the connecting rod 523 away from the filter cylinder 2. The end of the pressure rod 51 away from the filter cylinder 2 is provided with a sliding sleeve 542 extending in the vertical direction.

[0126] The driving member 524 is disposed at one end of the parallelogram mechanism away from the filter cylinder 2 . A slide rail 541 extending in a vertical direction is disposed on the driving member 524 , and the slide sleeve 542 is sleeved on the slide rail 541 .

[0127] 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 and the other end is hinged to the support frame 521 .

[0128] When the pressing rod 51 is at 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 .

[0129] 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, so that the connecting rod 523 drives the pressing 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.

[0130] 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, lifts 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, and moves the pressure rod 51 to the second position.

[0131] In the present embodiment, “raising the pressure rod 51 to a certain height” specifically refers to 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 .

[0132] Preferably, in this embodiment, the connecting rod 523 is arranged above the supporting frame 521, and when the driving member 524 is in the initial position, the connecting rod 522 extends obliquely from bottom to top toward the direction close to the filter cylinder 2, and the spring-type telescopic rod extends obliquely from bottom to top toward the direction away from the filter cylinder 2. Thus, the smoothness of the driving member 524 driving the connecting rod 522 to rotate toward the side close to the filter cylinder 2 can be further improved.

[0133] like Figure 4 As shown, in this embodiment, the cloth pressing assembly is arranged on the side of the filter cylinder 2.

[0134] 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 arranged 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.

[0135] 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.

[0136] In this embodiment, if the cloth pressing assembly is provided as one, when the pressing rod 51 is in the first position, the pressing plate extends to the edge of the opposite side of the filter cylinder 2 .

[0137] Preferably, two cloth pressing assemblies are provided, which are respectively arranged at the third side and the fourth side, so as to press the filter cloth 71 from both sides of the filter cloth 71 .

[0138] Embodiment 2

[0139] The existing cloth pressing assembly, specifically, the first cloth pressing assembly 5, uses a horizontally extending pressing rod 51 to press the filter cloth 71 against the filter cylinder 2, and 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 the filter cloth 71, and 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 loosen, affecting the laying effect of the filter cloth 71.

[0140] like Figures 4 to 10 As shown, in this embodiment, a cloth pressing assembly is introduced to solve the above-mentioned problem, prevent the pressing rod 51 from being deflected under the force of the filter cloth 71, and improve the stability of the cloth pressing assembly.

[0141] In this embodiment, based on the first embodiment, the structure of the first cloth pressing assembly is further limited.

[0142] Specifically, 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 at least arranged on 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.

[0143] 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 .

[0144] 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 .

[0145] 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.

[0146] 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, especially, the pressure rod 51 is stopped on the side of 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.

[0147] In some possible embodiments, the limiting member 55 is provided in one piece 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 deflecting.

[0148] like Figure 4As 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 opposite to the laying direction of 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.

[0149] In this embodiment, through the above arrangement, the first limiting member 551 and the second limiting member 552 can be used to limit the horizontal position of the pressure rod 51, so as to prevent the pressure rod 51 from being deflected in the horizontal direction, and enable the pressure rod 51 to withstand a greater horizontal pulling force. Specifically, when the pressure rod 51 tends to deflect in the horizontal direction due to the pulling force in the horizontal direction, the first limiting member 551 and the second limiting member 552 stop the pressure rod 51 from both sides of the pressure rod 51, so as to prevent the pressure rod 51 from rotating.

[0150] Preferably, in this embodiment, 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. Therefore, when a limiting member 55 is set, a plane can be used to stop the pressure rod 51 on the side of 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, the two planes are used to stop the pressure rod 51 from the side of the laying direction of the filter cloth 71 and the side of the pressure rod 51 opposite to the laying direction of the filter cloth 71, respectively, which can further improve the horizontal limiting effect of the pressure rod 51 and prevent it from deflecting.

[0151] 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 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, 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.

[0152] like Figures 4 to 10As 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 second limiting member 551 and the second limiting member 552 in a direction away from each other.

[0153] 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.

[0154] Preferably, the side of the reinforcing rib 55 - 3 away from the first plate 55 - 1 is inclined from bottom to top towards the first plate 55 - 1 .

[0155] Preferably, in this embodiment, the first plate 55 - 1 , the second plate 55 - 2 , and the reinforcing rib 55 - 3 are an integrated piece.

[0156] Preferably, in this embodiment, the side wall of the pressing rod 51 close to the limiting member 55 is configured as a plane that fits the limiting member 55 .

[0157] 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 through a plane, which can further improve the limiting effect of the limiting member 55 on the compression rod 51 .

[0158] In this embodiment, 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. 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.

[0159] In some specific embodiments, the pressure 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 pressure rod 51 in the horizontal direction 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.

[0160] 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 .

[0161] Specifically, the first plates 55-1 of the first limiting member 551 and the second limiting member 552 extend vertically upward and are higher than the filter cylinder 2 by a certain height, and the certain height enables the first plates 55-1 to at least partially overlap with the pressing rod 51 in the vertical direction when the pressing rod 51 is in the second position. When the pressing rod 51 is in the second position, the first plates 55-1 of the first limiting member 551 and the second limiting member 552 at least partially overlap in the length direction of the pressing rod 51.

[0162] Preferably, when the pressing rod 51 is in the second position, one 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 .

[0163] Preferably, in this embodiment, the lower ends of the first plates 55 - 1 of the first limiting members 551 and the second limiting members 552 are lower than the upper edge of the filter cylinder 2 .

[0164] 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, and the driving transmission device 52 can also be the driving transmission device 52 in the above-mentioned embodiment one.

[0165] In some preferred embodiments, the first limiting member 551 and the second limiting member 552 are integrated with the support frame 521 .

[0166] In some preferred embodiments, 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 configured to be a plane parallel to the top of the filter cylinder 2. That is, the bottom surface of the pressure rod 51 is configured to be a plane extending horizontally, so that 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.

[0167] Embodiment 3

[0168] 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 is fed forward and spreads the material at the same time, the material is easily caused to adhere to the bottom of the cloth pushing and spreading device and the filter cloth above the spreading port.

[0169] In the prior art, in order to prevent the 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 during the retreat process, that is, after the cloth-pushing and spreading device pushes the filter cloth forward to the farthest end, the filter cloth is fixed by the second cloth-pressing assembly to form 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, and then the cloth-pushing and spreading device retreats, and spreads the material during the retreat process. The spreading efficiency of this solution is too low.

[0170] like Figures 1 to 14 As shown, in the embodiment of the present invention, based on the first embodiment, a cloth pushing and spreading device 1 of the sludge dewatering equipment is further 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.

[0171] like Figures 1 to 3 , Figures 11 to 14 As 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 the first end of the cloth pushing head 113 is connected to the spreading body 11, and the second end opposite to the first end is lower than the first end. The second end of the cloth pushing head 113 opposite to the first end of the cloth pushing head 113 is lower than the spreading opening 1121 at least when the cloth pushing head 113 abuts against the filter cloth 71.

[0172] 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 supports the filter cloth 71, so that the filter cloth 71 is dragged out from the cloth winding roller 7.

[0173] like Figure 1 and Figure 2 As shown, the cloth pushing head 113 at the front end of the material spreading body 11 presses against the filter cloth 71 so that the filter cloth 71 is pulled out from the cloth winding roller 7, and the filter cloth is wrapped around the front end of the material spreading body 11, and the filter cloth slides along the front end of the material spreading body 11 during the process of the material spreading body 11 being fed forward.

[0174] By arranging a cloth pushing head 113 which extends downwardly and obliquely at the front end of the material spreading body 11, arranging the material spreading opening 1121 at the bottom of the material spreading body 11 behind the cloth pushing head 113, and arranging the second end of the cloth pushing head 113 to be lower than the material spreading opening 1121 when the cloth pushing head 113 abuts against the filter cloth 71, the cloth pushing head 113 can drag the filter cloth 71 off the cloth winding roller 7 during the feeding and material spreading process of the material spreading body 11, and the filter cloth 71 under the material spreading body 11 can be stretched flat by the reaction force, and the material can be spread on the cloth spreading body 11 at the same time. On the filter cloth 71 below the paving body 11, on the one hand, the laying effect of the filter cloth 71 can be guaranteed, and on the other hand, the height difference between the second end of the cloth pushing head 113 and the paving port 1121 can reserve space for laying materials between the filter cloth 71 below the paving body 11 and the paving port 1121, which can avoid the material from sticking to the paving body 11 and improve the sludge spreading effect, so that the material can be evenly spread between two adjacent layers of filter cloth 71, which is beneficial to improving the dehydration effect of the material.

[0175] Preferably, in this embodiment, at least when the cloth pushing head 113 abuts against the filter cloth 71, the height difference between the second end of the cloth pushing head 113 and the material spreading opening 1121 is greater than the thickness of the material spread on the filter cloth, thereby further preventing the material from sticking to the material spreading body 11.

[0176] In some specific embodiments, the cloth pushing head 113 extends downwardly 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.

[0177] 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, and 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 that the filter cloth 71 has excessive surplus 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.

[0178] Preferably, in this embodiment, the second end of the cloth pushing head 113 is configured to be arc-shaped, thereby further improving the smoothness of the filter cloth 71 sliding along the second end of the cloth pushing head 113 and preventing the cloth pushing head 113 from damaging the filter cloth 71 during the cloth pushing process.

[0179] 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 .

[0180] In this embodiment, the cloth pushing head 113 can be set as a solid structure or a hollow structure.

[0181] 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.

[0182] Specifically, the solid column 1134 is disposed in front of the material paving body 11, is spaced apart from the material paving body 11, and is connected to the front end of the material paving body 11 through the support plate.

[0183] 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 increase the service life of the device.

[0184] 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.

[0185] 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 transitionally connected to the outer peripheral wall of the solid column 1134.

[0186] Preferably, the diameter of the solid cylinder 1134 is smaller than the thickness of the front end of the material laying body 11; the support plate includes two, which extend obliquely from the outer peripheral wall of the solid cylinder 1134 to the upper and lower edges of the front end of the material laying body 11, respectively, and the end of the support plate away from the solid body constitutes the first end of the cloth pushing head. One end of the support plate is connected to the solid cylinder 1134 as a whole, and the other end is connected to the front end of the material laying body 11, and the end of the support plate is smoothly connected to the outer peripheral wall of the solid cylinder 1134, so that the second end of the cloth pushing head 113 forms a smooth surface to avoid scratching the filter cloth 71 during the cloth pushing process.

[0187] Preferably, in this embodiment, the two support plates are tangent to the upper and lower sides of the solid column 1134 respectively.

[0188] 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 .

[0189] like Fig.12As shown, in some specific embodiments, the extension length of the support plate connected to the solid column 1134 from the bottom of the solid column 1134 is smaller than the extension length of the support plate connected to the solid column 1134 from the top of the solid column 1134, and the reinforcing plate 1133 is arranged between one end of the support plate connected to the solid column 1134 from the bottom of the solid column 1134 away from the solid column 1134 and the middle part of the support plate connected to the solid column 1134 from the top of the solid column 1134.

[0190] 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.

[0191] 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 .

[0192] 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 .

[0193] In some possible embodiments, the cloth pushing head 113 is connected as a whole with the material spreading body 11. Specifically, one end of the two support plates of the cloth pushing head 113 away from the solid cylinder 1134 is respectively connected to the upper and lower edges of the front end of the material spreading body 11, and the second end of the cloth pushing head 113 is lower than the material spreading opening 1121.

[0194] In this embodiment, in order to prevent the cloth-pushing head 113 from scraping the material under 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 can avoid 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 interval between the movable bottom plate and the top of the filter cylinder 2 is greater than or equal to the thickness of the material laid on the filter cloth 71; when the front end of the cloth-pushing and material-paving device 1 moves to the outside of the first side along the feeding direction, the movable bottom plate of the filter cylinder 2 moves downward by a stroke that matches the thickness of the material laid on the filter cloth 71 and the sum of the thickness of the filter cloth 71.

[0195] Specifically, in this embodiment, the filter cylinder includes a cylinder body and a movable bottom plate located inside the cylinder body. The cylinder body is a hollow cubic structure with water outlet holes on the sides. The top of the cylinder body is open, the movable bottom plate matches the cross-section of the cylinder body cavity and can move up and down along the cylinder body, and the bottom of the cylinder body is open.

[0196] like Fig.13 and Fig.14As shown, in some other possible embodiments, the cloth pushing head 113 is rotatably matched with the material laying body 11. Thus, when the material laying body 11 is fed forward, the cloth pushing head 113 can be controlled to rotate downward, so that the second end of the cloth pushing head 113 is lower than the material laying opening 1121, and a height difference greater than the thickness of the material laid on the filter cloth is formed between the cloth pushing head 113 and the material laying opening 1121. When the material laying body 11 is retracted, the cloth pushing head 113 can be controlled to rotate upward, so that the second end of the cloth pushing head 113 is higher than the material on the filter cloth 71, which can prevent the cloth pushing head 113 from scraping the material under the material laying body 11 and preventing the material from sticking to the cloth pushing head 113, thereby improving the material paving effect. At the same time, it is beneficial to increase the retraction speed of the material laying body 11 and the material laying rate.

[0197] 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.

[0198] 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 .

[0199] In this embodiment, the cloth pushing head 113 can be driven by a separate small motor.

[0200] 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 applied by the filter cloth 71 to the cloth pushing head 113 is greater than the elastic force of the elastic member, and the cloth pushing head 113 rotates toward the second position under the driving force of the reaction force of the filter cloth 71. Thus, the cloth pushing head 113 can be automatically switched between the first position and the second position, and can match the cloth pushing and material spreading action of the material spreading body 11.

[0201] 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.

[0202] 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 113 when rotating downward.

[0203] 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 in a direction 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.

[0204] In some possible embodiments, the limiting structure may be disposed between the rotating shaft and the bushing on the cloth pushing head 113 .

[0205] like Fig.13 and Fig.14 As shown, in some other possible embodiments, the front end surface of the material laying body 11 can be limited by 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 material laying body 11 and the cloth pushing head 113, and a gap for the cloth pushing head 113 to rotate is set between the cloth pushing head 113 and the material laying body 11. When the cloth pushing head 113 rotates to the first position, the upper end of the cloth pushing head 113 on the side close to the material laying body 11 abuts against the front end of the material laying body 11, and when the cloth pushing head 113 rotates to the second position, the lower end of the cloth pushing head 113 on the side close to the material laying body 11 abuts against the front end of the material laying body 11.

[0206] 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.

[0207] 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.

[0208] 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, so that the filter cloth 71 below the material spreading body 11 can be substantially level.

[0209] 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.

[0210] 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 .

[0211] 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.

[0212] In this embodiment, a sludge dewatering device 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 material onto the filter cloth 71.

[0213] 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.

[0214] Preferably, the moving speed of the paving body 11 retreating is greater than or equal to the moving speed of the paving body 11 advancing.

[0215] Preferably, in this embodiment, the paving body 11 extends in a horizontal direction.

[0216] Preferably, in the present embodiment, a notch is provided in the middle portion 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 arranged on the side of the filter cylinder 2 away from the cloth pushing and spreading device, so that the working end of the second cloth pressing assembly can pass through to press the filter cloth 71 covered on the second end of the cloth pushing head 113 onto the filter cylinder 2.

[0217] Specifically, the notch penetrates the cloth pushing head 113 along the vertical direction perpendicular to the first end to the second end of the cloth pushing head 113, and the opening of the notch faces the direction away from the first end of the cloth pushing head 113; preferably, a second cloth pressing assembly is arranged 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, and presses the filter cloth 71 covered on the second end of the cloth pushing head 113 onto the filter cylinder 2.

[0218] 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.

[0219] 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.

[0220] In the present embodiment, a material laying pipe 112 is arranged in the shell 111 of the material laying body 11, and the material laying pipe 112 includes a variable diameter section and an output section respectively having channels, and a material laying port 1121 is provided at the second end of the output section, and the second end of the variable diameter section is connected to the first end of the output section, so that the variable diameter section channel is connected to the output section channel; the channel of the output section has the same cross-section perpendicular to the forward direction of the material, and the bottom surface of the output section carrying the material is a plane; the cross-sectional area of ​​the variable diameter section channel 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 output section channel is the same as the vertical cross-sectional area of ​​the variable diameter section channel at the second end; wherein, 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.

[0221] The device can spread water-containing materials (such as sludge) on the filter cloth more evenly.

[0222] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents suggested above 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 of a dewatering device, comprising a pressing rod (51), characterized in that: Also includes: A support frame (521) is hingedly connected to a connecting rod (522), and a connecting rod (523) is hingedly connected to the other end of the connecting rod (522). The connecting rod (523) is arranged above or below the support frame (521), and the connecting rod (523) can slide along the pressure rod (51) in the length direction thereof; 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 surface of the connecting rod (522) and is arranged at an angle to the connecting rod (523); the moving path of the driving member (524) is parallel to the connecting rod (523); when the driving member (524) drives the pressure rod (51) to slide along the connecting rod (523), the connecting rod (522) is driven to rotate; the connecting rod (523) slides along the pressure rod (51), driving the pressure rod (51) to slide along the guide assembly (54).

2. The cloth pressing assembly of the dehydration equipment according to claim 1, characterized in that: The driving member (524) is arranged at the first end of the pressure rod (51), and is provided with an abutment portion corresponding to a side of the second end of the connecting rod (522) away from the pressure rod (51); On the moving path of at least part of the driving member (524) toward the second end of the pressure rod (51), the abutment portion slides with the side of the connecting rod (522) away from the second end of the pressure rod (51), driving the connecting rod (522) to rotate toward the second end of the pressure rod (51); Preferably, during the process of the driving member (524) moving toward the second end of the pressure rod (51), the first working state of the driving member (524) is that the abutting portion is spaced apart from the connecting rod (522); The second working state of the driving member (524) is that the abutting portion slides with the side of the connecting rod (522) away from the second end of the pressure rod (51), driving the connecting rod (522) to rotate in the direction of the second end of the pressure rod (51).

3. The cloth pressing assembly of the dehydration equipment according to claim 2, characterized in that: The surface of the driving member (524) used for contacting with the connecting rod (522) is configured as an arc-shaped surface.

4. The cloth pressing assembly of the dehydration equipment according to any one of claims 1 to 3, characterized in that: The support frame (521) is provided with a support frame (5211) which protrudes in a direction close to the connecting rod (523) and extends in a direction parallel to the connecting rod (523), and the driving member (524) is slidably provided on the support frame (5211).

5. The cloth pressing assembly of the dehydration equipment according to claim 4, characterized in that: The connecting rod (522) comprises a first rod portion and a second rod portion which are 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; Preferably, the driving member (524) comprises a first abutting portion and a second abutting portion corresponding to the first rod portion and the second rod portion respectively, and a gap corresponding to the supporting frame (5211) is provided between the first abutting portion and the second abutting portion.

6. The cloth pressing assembly of the dehydration equipment according to any one of claims 1 to 3, characterized in that: The connecting rod (522) is provided with a plurality of connecting rods (522) arranged at intervals along the length direction of the connecting rod (523), and each connecting rod (522) is of equal length and parallel to each other; or, the connecting rod (522) is provided with a plurality of groups arranged at intervals along the length direction of the connecting rod (523), and each group of connecting rods (522) is of equal length and parallel to each other, and each group of connecting rods (522) includes a first rod portion and a second rod portion clamped on both sides of the connecting rod (523); Preferably, two groups of connecting rods are provided, which are respectively connected between the two ends of the connecting rod and the supporting frame to form a parallelogram mechanism on the supporting frame.

7. The cloth pressing assembly of the dehydration equipment according to claim 6, characterized in that: An elastic member (525) is provided between at least one connecting rod (522) and the support frame (521) and is used to drive the connecting rod (522) to rotate in the direction of the first end of the pressure rod (51); Preferably, the elastic member (525) comprises a spring-type telescopic rod having two ends respectively hinged to the support frame (521) and the connecting frame rod (522).

8. The cloth pressing assembly of the dehydration equipment according to any one of claims 1 to 3, characterized in that: The guide assembly (54) comprises: A slide rail (541) is arranged on the driving member (524) or the first end of the pressure rod (51) and is arranged at an angle with the connecting rod (523); A sliding sleeve (542) corresponds to the sliding rail (541), is arranged on the first end of the pressure rod (51) or the driving member (524), and is sleeved on the sliding rail (541); Preferably, the extending direction of the slide rail is perpendicular to the connecting rod.

9. The cloth pressing assembly of the dehydration equipment according to any one of claims 1 to 3, characterized in that: The connecting rod (523) is arranged above the supporting frame (521), and when the driving member (524) is in the initial position, the connecting rod (522) extends obliquely from bottom to top in a direction close to the filter cloth.

10. A control method for a dehydration device, the dehydration device comprising a filter cylinder (2), a cloth pressing assembly of the dehydration device according to any one of claims 1 to 9 being installed at a first side of the filter cylinder (2) close to the cloth pushing and spreading device (1), characterized in that: Control methods include: Before the cloth pushing and spreading device (1) is fed from a first side of the filter cylinder (2) to a second side away from the cloth pushing and spreading device (1), the cloth pressing assembly presses the filter cloth (71) onto the filter cylinder (2); When the cloth pushing and spreading device (1) retreats from the second side of the filter cylinder (2), the driving member (524) moves in a direction away from the filter cloth, and the cloth pushing and spreading device (1) is used to limit the lifting height of the pressure rod (51) when it is drawn out of the filter cloth (71).

Images