A vertical extrusion sludge treatment system and method

Abstract

The present application relates to sludge treatment technical field, specifically disclose a kind of vertical extrusion type sludge treatment system and method, including cloth mechanism and filter pressing mechanism, cloth mechanism is used to deliver composite filter cloth with sludge clamped to filter pressing mechanism;Filter pressing mechanism includes: filter pressing cavity, for realizing composite filter cloth stacking and filter water;At least one movable filter assembly is arranged in extrusion cavity along vertical direction;Hydraulic mechanism is used to exert vertical pressure on the composite filter cloth stacked in filter pressing cavity.The present application is at least one movable filter assembly arranged in extrusion cavity along vertical direction, and adaptive design is carried out to movable filter assembly, so that in the process of composite filter cloth stacking, not only will not affect filter cloth stacking, and using movable filter assembly separates the support to stacked composite filter cloth, beneficial to the flow of upper layer water to lower layer, and movable filter assembly has extrusion effect to the composite filter cloth on its two sides, can improve filter pressing effect.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, specifically to a vertical extrusion sludge treatment system and method. Background Technology

[0002] Deep dewatering of sludge is an important step in sludge treatment. Sludge presses are common sludge filter presses. A sludge press is a device that achieves deep dewatering of sludge through vertically arranged extrusion chambers. Its working principle is based on the synergistic effect of high pressure extrusion and physical filtration to dewater sludge with high water content. It can reduce the water content of sludge to below 70% by using mechanical deep dewatering technology.

[0003] When using a sludge extruder, a sludge spreading machine is usually required. The spreading machine wraps the sludge between filter cloths and stacks them inside the extrusion chamber of the sludge extruder. For example, CN118833990A – a fully automatic spreading machine for sludge treatment – ​​discloses a method of wrapping sludge between two filter cloths and then stacking them in a material cylinder. It mainly includes a frame, a conveyor belt device, a spreading trolley, an upper winding / unwinding system, and a lower winding / unwinding system. The upper winding / unwinding system winds and guides the upper layer of filter cloth to the conveyor belt device; the lower winding / unwinding system winds and guides the lower layer of filter cloth to the conveyor belt device; the conveyor belt device transports the filter cloth to the spreading trolley; the spreading trolley reciprocates to stack the filter cloths containing sludge in the material cylinder. While this method solves the problems of high weight and low reliability caused by using a whole frame for reciprocating motion to stack filter cloths, it has the following drawbacks:

[0004] 1) Directly stacking filter cloths containing sludge in the filter cylinder for filtration cannot reduce the moisture content of the sludge to an optimal level. The moisture content of the sludge can be reduced to below 70%, and there is still room for further reduction in the moisture content of the sludge.

[0005] 2) It does not mention how to recycle the filter cloth and filter cake after filtration. Summary of the Invention

[0006] The purpose of this invention is to provide a vertical compression sludge treatment system and method to further reduce the moisture content of sludge.

[0007] This invention is achieved through the following technical solution:

[0008] A vertical extrusion sludge treatment system includes a cloth feeding mechanism and a filter press mechanism. The cloth feeding mechanism is used to feed a composite filter cloth containing sludge to the filter press mechanism. The filter press mechanism includes:

[0009] The filter press chamber is used to realize the stacking of composite filter cloth and water filtration. The filter press chamber includes a filter shell, and the filter shell is divided by a filter plate to form an upper squeezing chamber and a lower water filtration chamber.

[0010] At least one movable filter assembly is arranged vertically within the squeezing chamber. The movable filter assembly includes two guide cylinders symmetrically arranged on the inner wall of the squeezing chamber. The bottom of the guide cylinders is elastically connected to the squeezing chamber to accommodate changes in the height of the stacked composite filter cloth during the squeezing filtration process. This ensures that the composite filter cloth below the movable filter assembly is not unable to be squeezed due to the presence of the movable filter assembly. The length of the guide cylinder is parallel to the direction of movement of the composite filter cloth when it is stacked. Multiple support members are slidably arranged between the two guide cylinders, with adjacent support members elastically connected. A linear displacement mechanism is provided within the guide cylinder. Two support members are located at both ends; one support member is connected to one end of the guide cylinder, and the other is connected to the linear displacement mechanism. The two support members at this end (one end of the linear displacement mechanism) are used to insert the composite filter cloth. The linear displacement mechanism drives the other support member to reciprocate, thereby expanding or contracting the multiple support members and allowing the composite filter cloth to be stacked within the filter chamber. When the movable filter assembly is covered by the composite filter cloth, the multiple support members in the covered movable filter assembly remain in an expanded state.

[0011] A hydraulic mechanism is used to apply vertical pressure to the composite filter cloth stacked in the filter press chamber.

[0012] The inventive concept of this invention lies in:

[0013] By improving the squeezing chamber to enhance the filtration effect, this invention achieves a dual effect by setting movable filter components within the squeezing chamber: 1) When the composite filter cloth containing sludge is stacked in the squeezing chamber, movable filter components are inserted at intervals in the vertical direction. The movable filter component frame can move slightly in the vertical direction to adapt to changes in overall height during the filtration process. Compared to direct stacking, the movable filter components at intervals separate and support the stacked composite filter cloth, facilitating the flow of water from the upper layer to the lower layer. That is, the sludge layer is physically divided by multiple support components, which shortens the sludge layer thickness and significantly increases the water discharge rate. In addition, the movable filter components have a squeezing effect on the composite filter cloth on both sides, which can improve the filtration effect and reduce the sludge moisture content to below 60%; 2) By optimizing the structure of the movable filter components, multiple support components are reciprocated under the action of a linear displacement mechanism to achieve the stacking of filter cloth within the squeezing chamber.

[0014] In summary, the present invention can not only further reduce the moisture content of sludge, but also eliminates the need to install a feeding trolley outside the extrusion chamber.

[0015] In a preferred embodiment, the distance between two supports located on both sides of the composite filter cloth is smaller than the distance between any two other adjacent supports.

[0016] To achieve better movement of the composite filter cloth, the distance between the two supports on both sides of the composite filter cloth should be slightly greater than the thickness of the composite filter cloth. The reason for setting the distance between other adjacent supports to be relatively large is that if the distance between other adjacent supports is too small, a large number of supports will be required to ensure that multiple supports are evenly distributed in the extrusion chamber when unfolded. When multiple supports occupy a large lateral width on one side of the extrusion chamber, it will not be conducive to the stacking of the composite filter cloth in the extrusion chamber. This will result in a lower overall width of the stacked composite filter cloth, and the gap between the composite filter cloth and the extrusion chamber will lead to wasted space.

[0017] To avoid the problem of low space utilization caused by multiple supports occupying a large lateral width on one side of the extrusion chamber when multiple supports are retracted, in a preferred embodiment, one side wall of the filter shell protrudes outward to form an extension cavity, and when multiple supports are in the retracted state, multiple supports are placed in the extension cavity.

[0018] In other words, by setting an extension cavity on one side of the extrusion cavity, when multiple support members reciprocate with the linear displacement mechanism, the present invention can ensure that when the composite filter cloth is stacked by reciprocating movement, the vertical section of the composite filter cloth moves as close as possible to the inner wall of the extrusion cavity when it moves to both sides of the extrusion cavity, so that the width of the stacked composite filter cloth is almost the same as the width of the extrusion cavity, thus avoiding space waste.

[0019] In a preferred embodiment, both symmetrical sidewalls of the filter housing protrude outward to form an extension cavity; when multiple supports are in the unfolded state, multiple supports located on one side of the composite filter cloth are moved out of the extension cavity and placed in the extrusion cavity, and one support located on one side of the composite filter cloth is located in the extension cavity, ensuring that the vertical section of the composite filter cloth can be as close as possible to the inner wall of the extrusion cavity when it is moved to both sides of the extrusion cavity.

[0020] In a preferred embodiment, the bottom ends of the guide cylinder are connected to the bottom of the extension cavity via elastic supports to ensure that each layer of composite filter cloth can be squeezed and filtered within the squeezing cavity.

[0021] In a preferred embodiment, the support member includes a first support body and a second support body, the second support body being slidably connected to the first support body, the second support body being placed inside the first support body when the support member is in a retracted state, and the second support body being removed from the first support body when the support member is in an extended state; in two adjacent support members, the second support body of one support member is elastically connected to the first support body of the other support member.

[0022] The support members configured in this invention can achieve the following: when multiple support members are in a retracted state, they occupy a small lateral width; and when multiple support members are in an extended state, they have a large support area.

[0023] In a preferred embodiment, the guide cylinder is provided with a guide groove, through which another support member is connected to the linear displacement mechanism.

[0024] In a preferred embodiment, the support includes a first support body and a second support body; the top of the guide cylinder is also provided with a guide groove that cooperates with the second support body to better accommodate the movement of the second support body.

[0025] In a preferred embodiment, the fabric-making mechanism includes:

[0026] The upper filter cloth conveying mechanism is used to realize the taking-up and putting-down of the upper filter cloth in the composite filter cloth;

[0027] The lower filter cloth conveying mechanism is used to realize the taking-up and putting-down of the lower filter cloth in the composite filter cloth;

[0028] The feeding mechanism is used to guide sludge between the upper and lower filter cloths;

[0029] The conveying mechanism is used to transport the composite filter cloth to the filter press chamber.

[0030] Since the movable filter assembly installed in the extrusion chamber of the present invention can realize the stacking of composite filter cloth in the extrusion chamber by the reciprocating movement of multiple support members, the fabric feeding mechanism of the present invention does not need to be equipped with a fabric feeding trolley for reciprocating movement.

[0031] In a preferred embodiment, the end of the conveying mechanism is provided with a sealing mechanism, which includes a support base and a lifting mechanism arranged vertically opposite each other.

[0032] The top of the support base is provided with a first clamping plate, and the lower end of the lifting mechanism is attached to a second clamping plate through an upper suction mechanism.

[0033] The second clamping plate and the first clamping plate are detachably connected under the pressure of the support base and the lifting mechanism.

[0034] In the initial stacking stage, if the ends of the composite filter cloth that has just entered the squeezing chamber are not sealed, although there is a certain degree of adhesion between the sludge and the upper and lower filter cloths, the vertical setting of the composite filter cloth entering the squeezing chamber will cause the sludge to detach from the filter cloth and fall to the bottom of the squeezing chamber due to its weight, which is not conducive to the subsequent sludge removal. Furthermore, after the sludge has been squeezed and filtered in the squeezing chamber, the filter cloth and sludge cake need to be recovered by winding up the upper and lower filter cloths. When the recovery reaches the end, the composite filter cloth mixed with sludge cake is in a vertical state, and the sludge cake falls into the squeezing chamber under its own gravity, which is not conducive to the sludge cake removal.

[0035] This invention uses a sealing mechanism to seal the upper and lower filter cloths, thus preventing sludge and sludge cake from falling off.

[0036] In a preferred embodiment, the top of the support base is provided with a first clamping plate via a lower suction mechanism; the second clamping plate is provided with a plurality of protrusions, and the first clamping plate is provided with a slot corresponding to the protrusions.

[0037] The present invention facilitates the resetting of the second clamping plate and the first clamping plate by means of the lower adsorption mechanism when winding up the upper and lower filter cloths.

[0038] In a preferred embodiment, the fabric feeding mechanism further includes a mud cake collecting mechanism, which includes a mud cake collecting trough. The mud cake collecting trough is located at the junction of the lower filter cloth conveying mechanism and the conveying mechanism and is used to receive mud cakes that fall during the recycling of the lower filter cloth. A mud cake conveying mechanism is provided at the lower end of the mud cake collecting trough.

[0039] This invention, by setting up a mud cake collection mechanism, can automatically recover mud cakes during the process of rolling up the upper and lower filter cloths.

[0040] In a preferred embodiment, the fabric mechanism further includes a filter cloth cleaning mechanism, which comprises a filter cloth cleaning transport mechanism and a cleaning mechanism; the filter cloth cleaning transport mechanism is used to guide the filter cloth to be cleaned into the cleaning mechanism for cleaning, and to roll up the cleaned filter cloth.

[0041] The filter cloth cleaning mechanism of the present invention can realize automatic cleaning and winding of filter cloth.

[0042] In a preferred embodiment, a control unit is also included, the control unit comprising:

[0043] An infrared sensor is used to collect the distance between the bottom of the movable filter assembly and the top of the already stacked composite filter cloth during the stacking process.

[0044] The controller receives distance signals collected by infrared sensors and determines whether to shut down the linear displacement mechanism and keep multiple support components in the deployed state based on the distance signals.

[0045] The controller is also in communication with the drive end of the hydraulic mechanism; the controller is also in communication with the drive ends of various components in the fabric distribution mechanism.

[0046] The control unit of the present invention can control the movable filter assembly in the extrusion chamber, and realize the stacking of composite filter cloth in the extrusion chamber by controlling the movable filter assembly.

[0047] The sludge treatment method based on the above-mentioned vertical extrusion sludge treatment system includes the following steps:

[0048] S1. The sludge is wrapped between the upper and lower filter cloths by the cloth-making mechanism to form a composite filter cloth, and the composite filter cloth is introduced into the filter press chamber.

[0049] S2. Ensure that multiple support components are in the unfolded state, so that the composite filter cloth entering the filter press chamber is inserted between two adjacent support components;

[0050] S3. The composite filter cloth is stacked in the filter press chamber by reciprocating movement through a linear displacement mechanism. Specifically, when the end of the composite filter cloth reaches the filter plate, the linear displacement mechanism reciprocates, driving the support members to reciprocate, so that multiple support members can switch between unfolded and retracted states to achieve the stacking of the composite filter cloth. When the composite filter cloth is close to the movable filter assembly, the multiple support members are kept in the unfolded state, and the upper movable filter assembly continues to work to achieve the upper stacking.

[0051] S4. After the composite filter cloth is stacked, start the hydraulic mechanism to perform filter pressing.

[0052] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0053] 1. This invention arranges at least one movable filter component vertically within the extrusion chamber and adapts the movable filter component to the design, ensuring that the stacking of the composite filter cloth is not affected during the stacking process and that the stacking of the filter cloth can be achieved without the need for an additional cloth trolley outside the extrusion chamber. Furthermore, when the composite filter cloth containing sludge is stacked in the extrusion chamber, the movable filter components are inserted at intervals in the vertical direction. These movable filter components separate and support the stacked composite filter cloth, facilitating the flow of water from the upper layer to the lower layer. The movable filter components also exert a squeezing effect on the composite filter cloth on both sides, thereby improving the filtration efficiency.

[0054] 2. The end of the conveying mechanism of the present invention is provided with a sealing mechanism. The sealing mechanism can realize the detachable connection between the upper filter cloth and the lower filter cloth located at the front end of the sludge. Specifically, the upper filter cloth and the lower filter cloth are fixed between the second clamping plate and the first clamping plate by the connection of the second clamping plate and the first clamping plate, thus realizing the sealing of the composite filter cloth and avoiding the problem of sludge and mud cake falling off. Attached Figure Description

[0055] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0056] Figure 1 This is a schematic diagram of the overall structure of the vertical extrusion sludge treatment system of the present invention;

[0057] Figure 2 for Figure 1 Top view;

[0058] Figure 3 for Figure 1 The left view;

[0059] Figure 4 This is a schematic diagram of the filter cloth transmission of the present invention;

[0060] Figure 5 This is a schematic diagram of the end-sealing mechanism of the present invention;

[0061] Figure 6 This is a schematic diagram of the filter press chamber of the present invention. Figure 1 ;

[0062] Figure 7 for Figure 6 A cross-sectional view;

[0063] Figure 8 This is a schematic diagram of the filter press chamber of the present invention. Figure 2 ;

[0064] Figure 9 for Figure 8 Horizontal sectional view

[0065] Figure 10 This is a schematic diagram of the structure of the movable filter assembly of the present invention;

[0066] Figure 11 This is a cross-sectional view of the guide cylinder of the present invention.

[0067] The attached diagram shows the markings and corresponding component names:

[0068] 1-Feeding mechanism; 2-Upper filter cloth conveying mechanism; 3-Upper filter cloth; 4-Lower filter cloth conveying mechanism; 5-Lower filter cloth; 6-Conveying mechanism; 7-Filter press chamber; 8-Hydraulic mechanism; 9-Cake collection tank; 10-Washing mechanism; 11-Filter cloth washing and conveying mechanism; 12-End sealing mechanism;

[0069] 21-Upper take-up and release rollers; 22-Upper tension rollers; 23-Upper drive rollers; 24-Upper adjusting rollers;

[0070] 41-Lower take-up and release roller; 42-Lower tension roller; 43-Lower drive roller; 44-Lower adjusting roller;

[0071] 71-Filter housing; 72-Modible filter assembly; 73-Filter plate; 74-Squeezing chamber; 75-Water filtration chamber; 76-Drain pipe;

[0072] 711 - Extension cavity;

[0073] 721-Guide cylinder; 722-Support component; 723-Connecting line; 724-Elastic support component;

[0074] 7211-Guide slot; 7212-Guide groove; 7213-Lead screw; 7214-Nut;

[0075] 7221 - First support body; 7222 - Second support body;

[0076] 91 - Mud cake conveying mechanism;

[0077] 111-Guide roller; 112-First tension roller; 113-Second tension roller; 114-First pressure roller; 115-Second pressure roller; 116-Third tension roller; 117-Fourth tension roller; 118-Take-up roller;

[0078] 121-Support base; 122-First clamping plate; 123-Lifting mechanism; 124-Upper adsorption mechanism; 125-Second clamping plate; 126-Lower adsorption mechanism;

[0079] 100 - Support frame; 101 - Ladder; 200 - Composite filter cloth. Detailed Implementation

[0080] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. The embodiments described below are some, but not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0081] In the following description, numerous specific details are set forth to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, materials, or methods are not specifically described to avoid obscuring the invention. Unless otherwise specified, the materials, instruments, and reagents used in the following embodiments are commercially available. Unless otherwise specified, the techniques used in the embodiments are conventional methods well known to those skilled in the art.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0083] Example 1:

[0084] like Figures 1-11 As shown, in order to further reduce the moisture content of sludge, this embodiment provides a vertical extrusion sludge treatment system, including a cloth feeding mechanism and a filter press mechanism. The cloth feeding mechanism is used to convey a composite filter cloth (200) containing sludge to the filter press mechanism.

[0085] Specifically, the fabric-making mechanism in this embodiment includes:

[0086] The upper filter cloth conveying mechanism 2 is used to realize the take-up and release of the upper filter cloth 3 in the composite filter cloth 200. The upper filter cloth conveying mechanism 2 adopts the existing technology, which can be found in CN118833990A. The upper filter cloth conveying mechanism 2 mainly includes an upper take-up and release roller 21, an upper tension roller 22, an upper drive roller 23, and an upper adjusting roller 24. The upper take-up and release roller 21 is used to take up the upper filter cloth 3. It is connected to the power output shaft of the motor. The upper filter cloth 3 is taken back or released by the forward and reverse rotation of the motor. The upper tension roller 22, the upper drive roller 23, and the upper adjusting roller 24 are arranged in sequence at the rear end of the take-up and release roller 21 in the upper filter cloth 3 release direction to realize the conveying of the upper filter cloth 3.

[0087] The lower filter cloth conveying mechanism 4 is used to realize the take-up and release of the lower filter cloth 5 in the composite filter cloth 200. The lower filter cloth conveying mechanism 4 adopts existing technology, which can be found in CN118833990A. The lower filter cloth conveying mechanism 4 mainly includes a lower take-up and release roller 41, a lower tension roller 42, a lower drive roller 43, and a lower adjusting roller 44. The lower take-up and release roller 41 is used to take up the lower filter cloth 5. It is connected to the power output shaft of the motor. The lower filter cloth 5 is taken up or released by the forward and reverse rotation of the motor. The lower tension roller 42, the lower drive roller 43, and the lower adjusting roller 44 are arranged in sequence at the rear end of the lower take-up and release roller 41 in the release direction of the lower filter cloth 5 to realize the conveying of the lower filter cloth 5.

[0088] Feeding mechanism 1 is used to guide sludge between the upper filter cloth 3 and the lower filter cloth 5. Feeding mechanism 1 is located above conveying mechanism 6. Feeding mechanism 1 includes a feed pipe and a sludge pump. One end of the feed pipe is connected to the sludge storage tank, and the other end is provided with a uniform material bin. The uniform material bin is used to evenly drop sludge onto the lower filter cloth 5 located on conveying mechanism 6. The length of the outlet of the uniform material bin is similar to the width of the lower filter cloth 5, and the width of the uniform material bin gradually decreases from bottom to top.

[0089] The conveying mechanism 6 is used to convey the composite filter cloth 200 to the filter press chamber 7. The conveying mechanism 6 is existing technology and can specifically adopt a belt drive structure. The belt drive structure includes two drive rollers, which are connected by a belt drive.

[0090] In this embodiment, the upper filter cloth conveying mechanism 2, the lower filter cloth conveying mechanism 4, the feeding mechanism 1, and the conveying mechanism 6 are all mounted on the support 100. A walkway is provided on the support 100, and an escalator 101 is also provided on the support 100, connecting the ground and the walkway. The upper filter cloth conveying mechanism 2 and the lower filter cloth conveying mechanism 4 are respectively positioned above and below the feeding mechanism 1.

[0091] The process of forming the composite filter cloth 200 in this embodiment is as follows:

[0092] Start the conveying mechanism 6, the lower filter cloth conveying mechanism 4, and the upper filter cloth conveying mechanism 2. The lower filter cloth 5 is overlapped on the belt of the conveying mechanism 6. After the lower filter cloth 5 passes the feeding mechanism 1, the sludge pump is turned on to introduce sludge into the feeding mechanism and lay the sludge on the lower filter cloth 5. The lower filter cloth 5 with sludge is moved out of the feeding mechanism 1 by the conveying mechanism 6 and is located under the upper filter cloth 3 being conveyed. Then, the upper filter cloth 3 and the lower filter cloth 5 are combined to form a composite filter cloth 200 through a pressure roller. The composite filter cloth 200 enters the filter press mechanism under the transmission of the conveying mechanism 6 for stacking and filter press to remove water.

[0093] In this embodiment, the fabric mechanism also includes a mud cake collection mechanism, which includes a mud cake collection trough 9. The mud cake collection trough 9 is located at the junction of the lower filter cloth transmission mechanism 4 and the conveying mechanism 6, and is used to receive the mud cakes that fall off when recycling the lower filter cloth 5. A mud cake conveying mechanism 91 is provided at the lower end of the mud cake collection trough 9.

[0094] Specifically, the filter press mechanism in this embodiment includes:

[0095] The filter press chamber 7 is used for stacking the composite filter cloth 200 and filtering water. The filter press chamber 7 includes a filter shell 71, within which a filter plate 73 divides the space into an upper compression chamber 74 and a lower water filtration chamber 75. A drain pipe 76 is provided on the lower side wall of the water filtration chamber 75. In this embodiment, the filter shell 71 is a square cavity with an open top to accommodate the structure of the composite filter cloth 200 and facilitate stacking. Preferably, the lower section of the filter plate 73 is connected to the bottom of the water filtration chamber 75 by multiple support columns to improve the pressure-bearing capacity of the filter plate 73; the greater the pressure, the lower the moisture content of the filtered sludge cake. In this embodiment, the filter press chamber 71 is used for stacking the composite filter cloth 200 and filtering water. Figure 6 The horizontal direction shown is defined as the length of the filter chamber 75, perpendicular to... Figure 6 The horizontal direction is defined as the width of the filter chamber 75.

[0096] At least one movable filter assembly 72 is arranged vertically within the extrusion chamber 74. The number of movable filter assemblies 72 can be determined based on the actual height of the extrusion chamber 74. In this embodiment, two movable filter assemblies 72 are specifically provided. Each movable filter assembly 72 includes two guide cylinders 721 symmetrically arranged on the inner wall of the extrusion chamber 74, such as... Figure 6 As shown, in this embodiment, the composite filter cloth 200 is along the length direction of the extrusion chamber 74, i.e. Figure 6 The composite filter cloth 200 is stacked by reciprocating horizontal movement within the compression chamber 74. The guide cylinder 721 is parallel to the direction of movement of the composite filter cloth 200 during stacking; that is, the guide cylinder 721 is located on the side wall along the length of the compression chamber 74. The bottom of the guide cylinder 721 is elastically connected to the compression chamber 74 to accommodate changes in the height of the stacked composite filter cloth 200 during the compression filtration process. Specifically, four fixing plates can be installed on the inner wall of the compression chamber 74. The bottom ends of the guide cylinder 721 are connected to the fixing plates via elastic support members 724. The elastic support member 724 can specifically be a structure of springs and plastic pads. Specifically, the spring is positioned between two plastic pads, which are respectively connected to the bottom of the guide cylinder 721 and the top of the fixing plate. Multiple support members 722 are slidably arranged between two guide cylinders 721. Adjacent support members 722 are elastically connected. In this embodiment, adjacent support members 722 are connected by a connecting line 723. In addition to the connecting line 723, other elastic members with shrinking function can also be used for connection. A linear displacement mechanism is provided inside the guide cylinder 721. Two support members 722 are located at both ends. One support member 722 is connected to one end of the guide cylinder 721, and the other support member 722 is connected to the linear displacement mechanism. A guide groove 7211 is provided on the upper end surface of the guide cylinder 721. The support member 722 is connected to the linear displacement mechanism through the guide groove 7211, and the reciprocating movement of the support member 722 is realized. The two support members 722 at this end are used to insert the composite filter cloth 200. The linear displacement mechanism drives the other support member 722 to reciprocate, so as to realize the unfolding or folding of multiple support members 722 and to realize the stacking of the composite filter cloth 200 in the filter pressing chamber 7. Specifically, as shown in the figure Figure 6 , Figure 8 As shown, the rightmost support member 722 is connected to the rightmost end of the guide cylinder 721 via a connecting line 723, and the leftmost support member 722 is connected to a linear displacement mechanism. The composite filter cloth 200 is inserted into the gap between the two leftmost support members 722, and the linear displacement mechanism drives the leftmost support member 722 to reciprocate. During the stacking of the composite filter cloth, when the movable filter assembly 72 is covered by the composite filter cloth 200, the multiple support members 722 in the covered movable filter assembly 72 remain in the unfolded state.

[0097] The linear displacement mechanism in this embodiment can be any existing technology capable of achieving linear displacement, specifically a lead screw drive structure, a hydraulic cylinder, etc. In this embodiment, a lead screw drive structure is used, such as... Figure 11 As shown, it includes a lead screw 7213 disposed in the guide cylinder 721, a nut 7214 disposed on the lead screw 7213, and the bottom of the leftmost support member 722 passing through the guide groove 7211 and the nut 7214 via a connecting rod. The two ends of the lead screw 7213 are rotatably disposed at the two ends of the guide cylinder 721. The lead screw 7213 is rotated by a motor, and the reciprocating movement of the nut 7214 is achieved by the rotation of the lead screw 7213.

[0098] In a preferred embodiment, the spacing between the two supports 722 located on both sides of the composite filter cloth 200 is smaller than the spacing between any two other adjacent supports 722.

[0099] The hydraulic mechanism 8 is used to apply vertical pressure to the composite filter cloth 200 stacked in the filter press chamber 7. The hydraulic mechanism 8 is located directly above the filter press chamber 7 and includes a hydraulic assembly and a squeezing plate. The squeezing plate is located at the telescopic end of the hydraulic assembly. The vertical displacement of the squeezing plate is controlled by controlling the telescopic stroke of the hydraulic assembly, thereby squeezing and filtering the composite filter cloth 200 stacked in the filter press chamber 7.

[0100] The sludge treatment method based on the vertical extrusion sludge treatment system of this embodiment includes the following steps:

[0101] S1. The sludge is wrapped between the upper filter cloth 3 and the lower filter cloth 5 through the cloth mechanism to form a composite filter cloth 200, and the composite filter cloth 200 is introduced into the filter press chamber 7.

[0102] S2, to put multiple support members 722 into the deployed state, such as... Figure 8 and Figure 9 As shown, each support member 722 is evenly arranged along the length of the extrusion chamber 74, and the composite filter cloth 200 that enters the extrusion chamber 74 is inserted between the two leftmost support members 722.

[0103] S3. The composite filter cloth 200 is stacked in the filter chamber 7 by reciprocating movement of the linear displacement mechanism. When the end of the composite filter cloth 200 reaches the filter plate 73, the linear displacement mechanism reciprocates, driving the support members 722 to reciprocate, switching the multiple support members 722 between unfolded and retracted states to achieve the stacking of the composite filter cloth 200. When the composite filter cloth 200 is placed near the bottom movable filter assembly 72, the multiple support members 722 of the movable filter assembly 72 at that location remain in the unfolded state, and the upper movable filter assembly 72 continues to work to achieve the upper stacking. Specifically, when the end of the composite filter cloth 200 reaches the filter plate 73, the linear displacement mechanism drives the multiple support members 722 to move to the right until the multiple support members 722 are close together, that is, the distance between two adjacent support members 722 reaches the minimum. Figure 6 , Figure 7 As shown, at this time, the connecting line 723 is relaxed, and the vertical section of the composite filter cloth 200 moves from the leftmost to the rightmost. Under the conveying action of the conveying mechanism 6, the composite filter cloth 200 continues to move downward in the extrusion chamber 74, completing the stacking of the first layer of composite filter cloth 200. Then, the linear displacement mechanism drives multiple support members 722 to move to the left until the multiple support members 722 are in an unfolded state. At this time, the connecting line 723 is taut, and the vertical section of the composite filter cloth 200 moves from the rightmost to the leftmost. Under the conveying action of the conveying mechanism 6, the composite filter cloth 200 continues to move downward in the extrusion chamber 74, completing the stacking of the second layer of composite filter cloth 200. This process is repeated until all composite filter cloths 200 in the extrusion chamber 74 are stacked.

[0104] S4. After the composite filter cloth 200 is stacked, the hydraulic mechanism 8 is started to perform pressure filtration. The filtered water is continuously discharged through the drain pipe 76. After the pressure filtration is completed, the upper filter cloth transmission mechanism 2 and the lower filter cloth transmission mechanism 4 are operated to roll up the upper filter cloth 3 and the lower filter cloth 5, which drives the composite filter cloth 200 in the extrusion chamber 74 to move upward, completing the filter cloth recovery and mud cake export.

[0105] The composite filter cloth 200 stacked in the extrusion chamber 74 of this embodiment was press-filtered at a pressure of 2 MPa, and the mud cake was recovered. The measured moisture content of the mud cake was 68%. Similarly, the composite filter cloth 200 stacked in the conventional extrusion chamber 74 was press-filtered at a pressure of 2 MPa, and the mud cake was recovered. The measured moisture content of the mud cake was 72% (regular press-filtering). The composite filter cloth 200 stacked in the extrusion chamber 74 of this embodiment was press-filtered at a pressure of 20 MPa, and the mud cake was recovered. The measured moisture content of the mud cake was 58%. Similarly, the composite filter cloth 200 stacked in the conventional extrusion chamber 74 was press-filtered at a pressure of 20 MPa, and the mud cake was recovered. The measured moisture content of the mud cake was 67%. This shows that this embodiment has a significantly lower moisture content.

[0106] Example 2:

[0107] This embodiment is based on Embodiment 1, and the difference between it and Embodiment 1 is as follows:

[0108] In order to improve the space utilization rate in the extrusion chamber 74, the structure of the filter shell 71 is improved in this embodiment. Specifically, one side wall of the filter shell 71 protrudes outward to form an extension cavity 711. When the multiple support members 722 are in the retracted state, the multiple support members 722 are placed in the extension cavity 711.

[0109] In this embodiment, by setting an extension cavity 711, the length of the filter housing 71 at the position where the movable filter component 72 is set is extended, which can increase the distance that the composite filter cloth 200 can reciprocate within the extrusion cavity 74, and move the composite filter cloth 200 to both sides of the length direction of the extrusion cavity 74 as much as possible, thereby reducing the distance between the composite filter cloth 200 and the side wall of the extrusion cavity 74 after it is stacked.

[0110] This embodiment includes an extension cavity 711, and a schematic diagram showing multiple support members 722 in a retracted state is attached. Figure 6 As shown, if the extension cavity 711 is not provided, the multiple supports 722 will move to the left, and it cannot be ensured that the composite filter cloth 200 can move to the side wall close to the extrusion cavity 74 when it moves to the right.

[0111] In a preferred embodiment, to further improve the space utilization of the extrusion chamber 74, such as Figures 6-9 As shown, both symmetrical sidewalls of the filter housing 71 protrude outward to form extension cavities 711. The extension length of the right extension cavity 711 is greater than that of the left extension cavity 711. The left extension cavity 711 only needs to accommodate one support member 722. When multiple support members 722 are in the deployed state, as shown... Figure 8 , Figure 9 As shown, multiple support members 722 located on one side of the composite filter cloth 200 are moved out of the extension cavity 711 and placed inside the compression cavity 74; while the support member 722 located on the far left and connected to the linear displacement mechanism is placed in the extension cavity 711 on the left. This arrangement allows the composite filter cloth 200 to move as close as possible to both sides of the compression cavity. Preferably, the multiple support members 722 located on one side of the composite filter cloth 200 are evenly spaced.

[0112] In this embodiment, two extension cavities 711 are arranged opposite to each other. The longer extension cavity 711 is used to accommodate all the other support members 722 except the support member 722 connected to the linear displacement mechanism when the multiple support members 722 are in the retracted state; while the shorter extension cavity 711 is used to accommodate the support member 722 connected to the linear displacement mechanism when the multiple support members 722 are in the extended state.

[0113] In addition, in this embodiment, since two extension cavities 711 are provided, it is no longer necessary to use the fixing plate provided in Embodiment 1 to fix the guide cylinder 721. In this embodiment, the two ends of the guide cylinder 721 extend into the two extension cavities 711 respectively, and the bottom of the extension cavity 711 and the bottom of the guide cylinder 721 are connected by an elastic support member 724.

[0114] That is, the extension cavity 711 in this embodiment can not only extend the length of the filter shell 71 to accommodate the support member 722, but also serve as a support component for the movable filter assembly 72.

[0115] Example 3:

[0116] This embodiment is based on Embodiment 1 or Embodiment 2, and the difference from Embodiment 1 or Embodiment 2 is as follows:

[0117] This embodiment improves the structure of the support member 722 to reduce the lateral length of the compression cavity 74 occupied when multiple support members 722 are gathered or to reduce the extension length of the extension cavity 711, while still providing good support and isolation for the stacked composite filter cloth 200.

[0118] In this embodiment, as Figure 10 As shown, the support member 722 includes a first support body 7221 and a second support body 7222. The second support body 7222 is slidably connected to the first support body 7221. Specifically, a groove can be provided on the inner wall of the first support body 7221, and a protrusion that cooperates with the groove can be provided on the outer wall of the second support body 7222. When multiple support members 722 are in a retracted state, the second support body 7222 is placed inside the first support body 7221, and the second support body 7222 is completely covered by the first support body 7221. When multiple support members 722 are in an extended state, the second support body 7222 moves out of the first support body 7221 and remains slidably connected. In two adjacent support members 722, the second support body 7222 of one support member 722 is connected to the first support body 7221 of the other support member 722 via a connecting line 723.

[0119] Preferably, the top of the guide cylinder 721 is also provided with a guide groove 7212 that cooperates with the second support body 7222; the bottom of the second support body 7222 is slidably disposed in the guide groove 7212, and the guide groove 7212 is arranged parallel to the guide through groove 7211.

[0120] Example 4:

[0121] This embodiment is based on any one of Embodiments 1-3. In this embodiment, in order to solve the problem of sludge and mud cake falling into the extrusion chamber 74, such as... Figure 4 , Figure 5As shown, in this embodiment, a sealing mechanism 12 is provided at the end of the conveying mechanism 6. The sealing mechanism 12 includes a support base 121 and a lifting mechanism 123 arranged vertically opposite each other.

[0122] The top of the support base 121 is provided with a first clamping plate 122, and the lower end of the lifting mechanism 123 is attached to a second clamping plate 125 via an upper adsorption mechanism 124; the upper adsorption mechanism 124 can be a vacuum suction cup or a magnetic adsorption structure, etc., existing technologies. The lifting mechanism 123 can be any existing technology, such as a hydraulic cylinder or a screw drive structure.

[0123] The second clamping plate 125 and the first clamping plate 122 are detachably connected under the pressure of the support base 121 and the lifting mechanism 123. Specifically, the second clamping plate 125 is provided with multiple protrusions, and the first clamping plate 122 is provided with slots corresponding to the protrusions. The connection between the second clamping plate 125 and the first clamping plate 122 is achieved by inserting the protrusions into the slots.

[0124] The working process of this embodiment is as follows:

[0125] After the upper filter cloth 3 and the lower filter cloth 5 are combined, they are moved to the sealing mechanism 12 by the conveying mechanism 6. At this position, there is no sludge between the upper filter cloth 3 and the lower filter cloth 5. The lifting mechanism 123 is operated to move downward until the second clamping plate 125 and the first clamping plate 122 come into contact. Then, the upper adsorption mechanism 124 is de-energized and loses its adsorption on the second clamping plate 125. The lifting mechanism 123 is operated to move downward and insert the protrusion into the slot. At the same time, the upper filter cloth 3 and the lower filter cloth 5 are pressed into the slot by the protrusion, thus realizing the connection between the second clamping plate 125 and the first clamping plate 122. Alternatively, after the second clamping plate 125 and the first clamping plate 122 come into contact, the power is not cut off, and the lifting mechanism 123 continues to move downward to insert the protrusion into the slot. Then, the upper adsorption mechanism 124 is de-energized and loses its adsorption on the second clamping plate 125.

[0126] In this embodiment, the ends of the composite filter cloth 200 are sealed by the second clamping piece 125 and the first clamping piece 122, which can prevent sludge from falling into the squeezing chamber 74 during the stacking of the composite filter cloth 200, and can also prevent the mud cake from falling into the squeezing chamber 74 when the upper filter cloth 3 and the lower filter cloth 5 are rolled up after the filter cloth is dewatered.

[0127] Furthermore, the end of the composite filter cloth 200 in this embodiment is provided with a second clamping piece 125 and a first clamping piece 122. When the composite filter cloth 200 is lowered into the extrusion chamber 74, the second clamping piece 125 and the first clamping piece 122 have a certain weight, which makes it easier to guide the composite filter cloth 200 between the two support members 722.

[0128] In a preferred embodiment, the top of the support base 121 is provided with a first clamping piece 122 via a lower adsorption mechanism 126, which facilitates the separation of the first clamping piece 122 and the second clamping piece 125.

[0129] When the upper filter cloth 3 and the lower filter cloth 5 are wound up after the filter press is completed, when the second clamping plate 125 and the first clamping plate 122 move to the support base 121 and the lifting mechanism 123, the lifting mechanism 123 is operated to move downward, and at the same time the upper adsorption mechanism 124 and the lower adsorption mechanism 126 are activated. The upper adsorption mechanism 124 adsorbs the second clamping plate 125 and the lower adsorption mechanism 126 adsorbs the first clamping plate 122. At the same time, the lifting mechanism 123 is controlled to move upward, thereby realizing the separation of the second clamping plate 125 and the first clamping plate 122.

[0130] Example 5:

[0131] This embodiment is based on any one of embodiments 1-4. In this embodiment, the cloth-making mechanism further includes a filter cloth cleaning mechanism installed on the support 100. The filter cloth cleaning mechanism includes a filter cloth cleaning transmission mechanism 11 and a cleaning mechanism 10. The filter cloth cleaning transmission mechanism 11 is used to guide the filter cloth to be cleaned into the cleaning mechanism 10 for cleaning, and to roll up the cleaned filter cloth.

[0132] Specifically, such as Figure 4 As shown, the filter cloth cleaning and conveying mechanism 11 includes a guide roller 111, a first tension roller 112, a second tension roller 113, a first pressure roller 114, a second pressure roller 115, a third tension roller 116, a fourth tension roller 117, and a take-up roller 118. In this embodiment, the filter cloth cleaning and conveying mechanism 11 cooperates with the lower filter cloth conveying mechanism 4 to achieve filter cloth conveying. After the lower filter cloth 5 is recovered to the lower take-up roller 41, in order to clean the lower filter cloth 5, one end of the lower filter cloth 5 is sequentially passed through the lower tension roller 42, the lower drive roller 43, the guide roller 111, and the first tension roller 118. 2. The second tensioning roller 113, the first pressure roller 114, the second pressure roller 115, the third tensioning roller 116, and the fourth tensioning roller 117 are rotated and tensioned, and then transmitted to the take-up roller 118 for winding. The first pressure roller 114 and the second pressure roller 115 are located at the cleaning mechanism 10 and are at the same horizontal height. The cleaning mechanism 10 includes a rinsing structure and a wastewater recovery chamber. The first pressure roller 114 and the second pressure roller 115 press the lower filter cloth 5 into the wastewater recovery chamber. After being rinsed by the rinsing structure, it is transmitted to the take-up roller 118 for winding.

[0133] Example 6:

[0134] This embodiment is based on any one of embodiments 1-4. In this embodiment, the vertical extrusion sludge treatment system further includes a control unit, which includes:

[0135] An infrared sensor is used to collect the distance between the bottom of the movable filter assembly 72 and the top of the already stacked composite filter cloth 200 during the stacking process.

[0136] The controller receives the distance signal collected by the infrared sensor and determines whether to shut down the linear displacement mechanism and keep the multiple support members 722 in the deployed state based on the distance signal.

[0137] The controller is also in communication with the drive end of the hydraulic mechanism 8; the controller is also in communication with the drive ends of the various components in the fabric spreading mechanism.

[0138] In this embodiment, the controller is used to control the actions of the linear displacement mechanism, the hydraulic mechanism 8, and other components to achieve automatic control. The specific control process is conventional control and will not be described in detail here. The inventive point of this embodiment is to determine when it is necessary to keep the multiple support members 722 in the unfolded state by setting an infrared sensor.

[0139] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0140] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

Claims

1. A vertical extrusion sludge treatment system, comprising a cloth feeding mechanism and a filter press mechanism, wherein the cloth feeding mechanism is used to convey a composite filter cloth (200) encased in sludge to the filter press mechanism; characterized in that, The filter press mechanism includes: The filter press chamber (7) includes a filter shell (71), which is divided by a filter plate (73) to form an upper squeezing chamber (74) and a lower water filtration chamber (75). At least one movable filter assembly (72) is arranged vertically inside the extrusion chamber (74). The movable filter assembly (72) includes two guide cylinders (721) symmetrically arranged on the inner wall of the extrusion chamber (74). The bottom of the guide cylinders (721) is elastically connected to the extrusion chamber (74). Multiple support members (722) are slidably arranged between the two guide cylinders (721), and adjacent support members (722) are elastically connected. A linear displacement mechanism is provided inside the guide cylinder (721), with two linear displacement mechanisms located at both ends. One of the support members (722) is connected to one end of the guide cylinder (721), and the other support member (722) is connected to the linear displacement mechanism. The composite filter cloth (200) is inserted between the two support members (722) at this end. The other support member (722) is driven to reciprocate through the linear displacement mechanism to realize the unfolding or retraction of the multiple support members (722) and to realize the composite filter cloth (200) stacked in the filter press chamber (7). A hydraulic mechanism (8) is used to apply vertical pressure to the composite filter cloth (200) stacked in the filter press chamber (7); the cloth feeding mechanism includes an upper filter cloth conveying mechanism (2), a lower filter cloth conveying mechanism (4), a feeding mechanism (1), and a conveying mechanism (6). The end of the conveying mechanism (6) is provided with a sealing mechanism (12), which includes a support base (121) and a lifting mechanism (123) arranged vertically opposite each other. The top of the support base (121) is provided with a first clamping piece (122), and the lower end of the lifting mechanism (123) is adsorbed with a second clamping piece (125) through the upper adsorption mechanism (124). The second clamping piece (125) and the first clamping piece (122) are detachably connected under the compression of the support base (121) and the lifting mechanism (123).

2. The vertical compression sludge treatment system according to claim 1, characterized in that, The distance between the two supports (722) located on both sides of the composite filter cloth (200) is smaller than the distance between the other two adjacent supports (722).

3. The vertical compression sludge treatment system according to claim 1, characterized in that, One side wall of the filter housing (71) protrudes outward to form an extension cavity (711). When the multiple support members (722) are in a retracted state, the multiple support members (722) are placed in the extension cavity (711).

4. The vertical compression sludge treatment system according to claim 3, characterized in that, The two symmetrical sidewalls of the filter housing (71) protrude outward to form the extension cavity (711); when the multiple supports (722) are in the unfolded state, the multiple supports (722) located on one side of the composite filter cloth (200) move out of the extension cavity (711) and are placed in the compression cavity (74).

5. A vertical compression sludge treatment system according to claim 3, characterized in that, The bottom ends of the guide cylinder (721) are connected to the bottom of the extension cavity (711) via elastic support members (724).

6. The vertical compression sludge treatment system according to claim 1, characterized in that, The support member (722) includes a first support body (7221) and a second support body (7222). The second support body (7222) is slidably connected to the first support body (7221). When the support member (722) is in a retracted state, the second support body (7222) is placed inside the first support body (7221). When the support member (722) is in an extended state, the second support body (7222) is moved out of the first support body (7221). In two adjacent support members (722), the second support body (7222) of one support member (722) is elastically connected to the first support body (7221) of the other support member (722).

7. A vertical compression sludge treatment system according to claim 1, characterized in that, The guide cylinder (721) is provided with a guide groove (7211), through which another support member (722) is connected to the linear displacement mechanism.

8. A vertical compression sludge treatment system according to claim 7, characterized in that, When the support member (722) includes a first support body (7221) and a second support body (7222); the top of the guide cylinder (721) is also provided with a guide groove (7212) that cooperates with the second support body (7222).

9. A vertical extrusion sludge treatment system according to any one of claims 1-8, characterized in that, The fabric-making mechanism includes: The upper filter cloth conveying mechanism (2) is used to realize the taking and releasing of the upper filter cloth (3) in the composite filter cloth (200); The lower filter cloth conveying mechanism (4) is used to realize the taking and releasing of the lower filter cloth (5) in the composite filter cloth (200); The feeding mechanism (1) is used to introduce sludge between the upper filter cloth (3) and the lower filter cloth (5); The conveying mechanism (6) is used to convey the composite filter cloth (200) to the filter press chamber (7).

10. A vertical compression sludge treatment system according to claim 1, characterized in that, The top of the support base (121) is provided with a first clamping piece (122) via a lower adsorption mechanism (126); the second clamping piece (125) is provided with a plurality of protrusions, and the first clamping piece (122) is provided with a slot corresponding to the protrusions.

11. A vertical compression sludge treatment system according to claim 9, characterized in that, The fabric collection mechanism also includes a mud cake collection mechanism, which includes a mud cake collection trough (9). The mud cake collection trough (9) is located at the junction of the lower filter cloth transmission mechanism (4) and the conveying mechanism (6) and is used to receive the mud cakes that fall when the lower filter cloth (5) is recycled. The lower end of the mud cake collection trough (9) is provided with a mud cake conveying mechanism (91).

12. A vertical extrusion sludge treatment system according to claim 9, characterized in that, The fabric mechanism also includes a filter cloth cleaning mechanism, which includes a filter cloth cleaning and conveying mechanism (11) and a cleaning mechanism (10). The filter cloth cleaning and conveying mechanism (11) is used to guide the filter cloth to be cleaned into the cleaning mechanism (10) for cleaning, and to roll up the cleaned filter cloth.

13. A vertical compression sludge treatment system according to claim 1, characterized in that, It also includes a control unit, which includes: An infrared sensor is used to collect the distance between the bottom of the movable filter assembly (72) and the top of the already stacked composite filter cloth (200) during the stacking process of the composite filter cloth (200); The controller receives the distance signal collected by the infrared sensor, and determines whether to close the linear displacement mechanism and keep the multiple support members (722) in the unfolded state based on the distance signal; The controller is also communicatively connected to the drive end of the hydraulic mechanism (8); the controller is also communicatively connected to the drive ends of each component in the fabric feeding mechanism.

14. A vertical compression sludge treatment system according to claim 1, characterized in that, The filter housing (71) is a square cavity with an opening at the top.

15. A vertical compression sludge treatment system according to claim 1, characterized in that, The linear displacement mechanism is either a lead screw drive or a hydraulic cylinder.

16. A sludge treatment method based on the vertical extrusion sludge treatment system according to any one of claims 1-15, characterized in that, Includes the following steps: S1. The sludge is wrapped between the upper filter cloth (3) and the lower filter cloth (5) through the cloth mechanism to form the composite filter cloth (200), and the composite filter cloth (200) is introduced into the filter press chamber (7). S2. The multiple support members (722) are in the unfolded state to ensure that the composite filter cloth (200) entering the filter press chamber (7) is inserted between two adjacent support members (722); S3. The composite filter cloth (200) is stacked in the filter press chamber (7) by reciprocating movement through the linear displacement mechanism; S4. After the composite filter cloth (200) is stacked, start the hydraulic mechanism (8) to perform pressure filtration.

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