Wet sludge filter pressing system

Abstract

The utility model belongs to the technical field of wet sludge treatment, and particularly relates to a wet sludge filter pressing system which comprises sludge receiving and storing equipment, sludge stirring and wall breaking equipment and laminated filter pressing equipment which are connected in sequence, the laminated filter pressing equipment comprises a filter pressing machine frame, and a material conveying pipe, a material distributing and discharging traveling crane, a filter pressing device and a discharging hopper are arranged on the filter pressing machine frame. The material conveying pipe is connected with the sludge stirring wall-breaking equipment, the two material distributing and discharging travelling cranes are arranged on the two sides of the filter pressing device respectively, the material distributing and discharging travelling cranes are movably installed on the filter pressing rack, the filter pressing device comprises a filter pressing power mechanism and a filter pressing box, the filter pressing power mechanism is arranged on the filter pressing rack, and the filter pressing box is arranged on the filter pressing rack. The filter pressing power mechanism provides filter pressing power for the filter pressing boxes, the number of the filter pressing boxes is two corresponding to the distributing and discharging travelling crane, and the two filter pressing boxes are movably arranged on the filter pressing rack. According to the utility model, the wet sludge filter pressing efficiency is improved, the equipment structure is simplified, and the uniformity of material distribution is ensured.

Description

Technical Field

[0001] The utility model relates to a wet sludge filter pressing system, belonging to the technical field of wet sludge treatment. Background Art

[0002] At present, the main method of disposing wet sludge is incineration. However, since the dehydration treatment of wet sludge before incineration generally adopts a belt dehydrator or a screw dehydrator, the moisture content of the wet sludge can only be reduced to 80%. This kind of sludge is a non-Newtonian fluid (paste). Sludge with such a high moisture content is not convenient to transport. During the incineration disposal process, the large amount of water in the sludge needs to absorb a lot of heat, resulting in a waste of resources and reducing the sludge treatment capacity.

[0003] In order to increase the sludge processing capacity of the incineration plant and reduce the moisture content of the sludge, the later improved dehydration process generally adopts a high-pressure plate and frame dehydrator. After the sewage with a water content of 99% enters the plate and frame, the sludge is dehydrated by high pressure to reduce the moisture content of the sludge to 60-65%. Although the wet sludge obtained by this process is solid, it requires the addition of a large amount of chemicals, which is costly to operate. The moisture content of the wet sludge does not reach the ideal value. Moreover, for wet sludge with a moisture content of 80%, it needs to be diluted to 99% before entering the high-pressure plate and frame dehydrator, which causes a certain amount of resource waste. In recent years, steam drying or low-temperature drying processes have been mostly used to reduce the moisture content of wet sludge to 35-40% before incineration. In this way, although the sludge processing capacity has increased, the investment and operating costs of sludge disposal are very high, which adds a great economic burden to the government. Therefore, how to reduce the moisture content in wet sludge to make it suitable for incineration disposal process while reducing the operating cost of the wet sludge dehydration process is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The utility model aims at solving the defects of the prior art and provides a wet sludge filter pressing system.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A wet sludge filter press system comprises a sludge receiving and storage device, a sludge stirring and wall-breaking device and a laminated filter press device connected in sequence, wherein the sludge receiving and storage device is used to store the wet sludge to be dehydrated, the sludge stirring and wall-breaking device is used to mix the agent with the wet sludge to be dehydrated and stir them evenly, the laminated filter press device comprises a filter press frame, the filter press frame is provided with a feed pipe, a material discharging crane, a filter press device and a discharge hopper, the feed pipe is connected to the sludge stirring and wall-breaking device, the material discharging crane is provided with two, and the two material discharging cranes are ... The unloading cranes are respectively arranged on both sides of the filter press device, and the cloth unloading crane is movably installed on the filter press frame. The filter press device includes a filter press power mechanism and a filter press box. The filter press power mechanism is arranged on the filter press frame. The filter press power mechanism provides filter press power for the filter press box. The filter press box is provided with two cloth unloading cranes corresponding to the two filter press boxes. The two filter press boxes are movably arranged on the filter press frame. The cloth unloading crane is used to stack cloth into the filter press box and unload the dehydrated sludge in the filter press box.

[0007] The beneficial effects of the utility model are as follows: the utility model stores the wet sludge to be dehydrated through the sludge receiving and storing equipment, mixes the reagent with the wet sludge to be dehydrated through the sludge stirring and wall-breaking equipment, stirs them evenly and transports them to the laminated filter press equipment. The laminated filter press equipment of the utility model adopts a set of filter press device, two sets of cloth unloading cranes and a set of filter press power mechanism to complete the dehydration and filter press treatment of the wet sludge in the two sets of filter press boxes, thereby improving the efficiency of wet sludge filter press and simplifying the equipment structure. One set of cloth unloading cranes completes the cloth filter press. The cloth unloading crane of the utility model can be movably mounted on the filter press frame, and the reciprocating motion of the cloth unloading crane on the filter press frame can place the filter cloth wrapped with wet sludge in a flat layer in the filter press box during cloth distribution, thereby ensuring uniform cloth distribution.

[0008] On the basis of the above technical solution, the present invention can also make the following improvements:

[0009] Furthermore, the filter press box includes a box body and a bottom plate. The inner wall of the box body is provided with a plurality of guide bars, the guide bars are vertically arranged, and gaps are provided between adjacent guide bars.

[0010] The beneficial effect of adopting the above-mentioned further technical solution is that the gaps between the guide strips form guide grooves for liquid flow, and the guide grooves can quickly guide the water removed by the filter press from the filter press box to the outside of the filter press box, thereby improving the filter press efficiency.

[0011] Furthermore, the filter press device also includes a filter box moving drive mechanism and a filter cloth lifting power mechanism. The filter box moving drive mechanism drives the filter press box to move on the filter press frame. The filter cloth lifting power mechanism is arranged below the filter press box. The bottom plate is movably arranged in the box body, and the output end of the filter cloth lifting power mechanism is transmission-connected to the bottom plate.

[0012] The beneficial effects of adopting the above-mentioned further technical scheme are: the filter press box can be quickly moved between the two operating positions of cloth unloading and filter pressing through the filter box moving drive mechanism; the bottom plate is driven to rise and fall in the filter press box by the filter cloth lifting power mechanism, thereby driving the filter cloth in the filter press box to rise and fall. When spreading the cloth, the filter cloth lifting power mechanism drives the bottom plate to rise, which is convenient for the spreading of the cloth unloading crane. During the spreading process, the filter cloth lifting power mechanism synchronously drives the bottom plate to descend, thereby driving the stacked filter cloth to descend, which is convenient for the continued spreading of the cloth unloading crane; when unloading, the cloth unloading crane drives the filter cloth to move in the opposite direction to recover the filter cloth, and the filter cloth lifting power mechanism synchronously drives the bottom plate to rise, driving the filter cloth to rise, so that the filter cloth is pulled up and enters the cloth unloading crane as soon as possible, avoiding the situation where the dry sludge falls into the filter press box due to shaking or pulling force of the filter cloth during the pulling process.

[0013] Furthermore, the cloth unloading crane includes a crane frame, which is movably mounted on the filter press frame, and an upper cloth winding roller, a lower cloth winding roller, an upper guide roller and a cloth unloading drive assembly are rotatably provided on the crane frame, the upper cloth winding roller is used to release and retract the upper filter cloth, and the lower cloth winding roller is used to release and retract the lower filter cloth, the upper filter cloth passes through the upper cloth winding roller, the upper guide roller and the cloth unloading drive assembly in sequence, and the lower filter cloth passes through the lower cloth winding roller and the cloth unloading drive assembly in sequence, and a feeding port is provided at the end of the conveying pipe, and the feeding port is arranged above the lower filter cloth, the unloading hopper is arranged at the unloading end of the cloth unloading crane, and the unloading hopper is arranged below the cloth unloading drive assembly.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are: when spreading the cloth, the upper filter cloth and the lower filter cloth are driven to move by the cooperation of the cloth unloading drive assembly with the upper cloth winding roller and the lower cloth winding roller. During the movement of the filter cloth, the filter cloth wrapped with wet sludge is placed in a flat layer in the filter press box through the reciprocating motion of the traveling frame on the filter press frame, thereby ensuring the uniformity of the cloth. When unloading, the upper cloth winding roller and the lower cloth winding roller rotate in opposite directions to recover the filter cloth and unload the dry sludge after filtration into the unloading hopper, thereby realizing the integration of cloth spreading and unloading in the wet sludge filter press process, which is convenient to operate and has high work efficiency.

[0015] Furthermore, the cloth unloading drive assembly includes an upper pressure roller and a chain conveyor. The upper pressure roller is rotatably mounted on the cloth unloading crane, and the chain conveyor is mounted on the crane frame. The upper pressure roller is arranged above one end of the chain conveyor, and the loading port and the unloading hopper are respectively arranged above and below the other end of the chain conveyor.

[0016] The beneficial effect of adopting the above-mentioned further technical solution is: when loading, the wet sludge falls directly onto the lower filter cloth on the chain conveyor after coming out of the loading port, and the upper filter cloth and the lower filter cloth are pressed together by the upper pressure roller in cooperation with the chain of the chain conveyor, driving the upper filter cloth and the lower filter cloth to move wrapped with the sludge; when unloading, the upper cloth roller and the lower cloth roller rotate in opposite directions, and cooperate with the chain conveyor and the upper pressure roller to drive the upper filter cloth and the lower filter cloth to move wrapped with the dry sludge sheets after filtration in opposite directions, and the dry sludge moves on the lower filter cloth to the end of the chain conveyor, and falls from the lower filter cloth to the unloading hopper below the chain conveyor, and is then transported to the next process for processing through transportation equipment.

[0017] Furthermore, the cloth unloading crane is also provided with a material guide baffle, and the cloth unloading crane is provided with a mounting door frame. The material guide baffle is installed on the mounting door frame through a first lifting mechanism. Two material guide baffles are symmetrically provided, and the two material guide baffles are arranged above the lower filter cloth and behind the loading port.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are: since the wet sludge has a high moisture content and is fluid, the wet sludge material released from the feeding port is diverted and limited by the material guide baffle. After the wet sludge coming out of the feeding port falls on the lower filter cloth, it will not flow out from both sides of the lower filter cloth under the action of the guide baffle; the material guide baffle is installed by the first lifting mechanism and the mounting door frame. When distributing the material, the first lifting mechanism first drives the material guide baffle to descend and opens the feed valve of the feed pipe. The wet sludge continues to flow out from the feeding port and falls on the lower filter cloth. The material guide baffle provides diversion and limitation for the transportation of the wet sludge; after the distributing is completed, the feed valve is closed, and the first lifting mechanism drives the material guide baffle to rise, which can better prevent the sludge from falling and at the same time avoid the material guide baffle affecting the unloading.

[0019] Furthermore, the sludge receiving and storage equipment includes a hydraulic slide silo and a first-stage screw pump, the discharge port of the hydraulic slide silo is connected to the feed port of the first-stage screw pump, the hydraulic slide silo is used to store wet sludge to be dehydrated, and the discharge port of the first-stage screw pump is connected to the sludge stirring and wall breaking equipment.

[0020] The beneficial effect of adopting the above-mentioned further technical solution is: the storage and discharge of wet sludge are realized through the hydraulic slide silo, which can effectively solve the problems of sludge arching and poor discharge. After being discharged from the hydraulic slide silo, the wet sludge is transported through a first-stage screw pump. The first-stage screw pump cooperates with the pipeline to realize long-distance transportation of the wet sludge. The entire link is closed and the wet sludge is not easy to leak.

[0021] Furthermore, the discharge port of the hydraulic slide silo is provided with an inspection gate valve and a discharge screw.

[0022] The beneficial effects of adopting the above-mentioned further technical solution are: the hydraulic slide silo discharges the material through the maintenance gate valve and the unloading screw, ensuring smooth and efficient discharge of the wet sludge, and the maintenance gate valve can intercept the wet sludge discharge when the equipment needs to be repaired, making it convenient to open the equipment for maintenance.

[0023] Furthermore, the sludge mixing and wall breaking equipment includes a chemical adding device, a mixer and a secondary screw pump, the discharge port of the primary screw pump is connected to the feed port of the mixer, the chemical adding device is connected to the mixer, the discharge port of the mixer is connected to the feed port of the secondary screw pump, and the discharge port of the secondary screw pump is connected to the feed pipe.

[0024] The beneficial effect of adopting the above-mentioned further technical solution is that the reagent adding device adds the reagent into the wet sludge in advance, the wet sludge and the reagent are quickly and evenly mixed in the mixer, which plays a role in breaking the wall of the wet sludge, and the wet sludge is transported to the laminated filter press equipment through the secondary screw pump and the feed pipe. The entire link is closed and the wet sludge is not easy to leak.

[0025] Furthermore, the discharge port of the mixer is provided with a discharge gate valve.

[0026] The beneficial effect of adopting the above further technical solution is that the discharge of wet sludge can be intercepted by the discharge gate valve when the equipment needs to be repaired, making it convenient to open the equipment for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the workflow of the present utility model;

[0028] Figure 2 This is a structural diagram of the sludge receiving and storage equipment;

[0029] Figure 3 This is a structural diagram of the sludge mixing and wall breaking equipment;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the laminated filter press equipment;

[0031] Figure 5 for Figure 4 A magnified view of point A in the figure;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure of the laminated filter press equipment from another angle;

[0033] Figure 7 This is the main view of the laminated filter press equipment;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the material unloading crane;

[0035] Figure 9 This is a schematic diagram of the three-dimensional structure of the fabric unloading crane from another angle;

[0036] Figure 10 This is the main view of the material unloading crane;

[0037] Figure 11 Schematic diagram of the three-dimensional structure of the filter press box;

[0038] Figure 12 is a cross-sectional view of the filter press box;

[0039] Figure 13 It is a schematic diagram of the three-dimensional structure of the upper pressing roller.

[0040] The accompanying drawings are recorded as follows: 100, filter press frame; 101, traveling frame; 102, material conveying pipe; 103, unloading hopper; 104, frame guide rail; 105, frame roller; 106, upper cloth roller; 107, lower cloth roller; 108, upper guide roller; 109, upper steering roller; 110, lower guide roller; 112, upper filter cloth; 113, lower filter cloth; 114, feeding port; 115, upper pressing roller; 1151, edge pressing section; 1152, idling section; 116, chain conveyor; 117, pressing roller adjustment mechanism; 118, material guide baffle; 119, installation door frame; 120, first lifting Mechanism; 121, second lifting mechanism; 122, upper cleaning roller; 123, lower cleaning roller; 124, spreading roller; 201, filter press box; 2011, box body; 2012, guide strip; 2013, bottom plate; 202, filter box guide rail; 203, filter box roller; 204, horizontal hydraulic cylinder; 205, lifting hydraulic cylinder; 206, hydraulic press; 301, hydraulic slide silo; 302, first-stage screw pump; 303, maintenance gate valve; 304, unloading screw; 401, pharmaceutical adding device; 402, mixer; 403, second-stage screw pump; 404, unloading gate valve. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] See also Figures 1-13A wet sludge filter press system comprises a sludge receiving and storage device, a sludge stirring and wall-breaking device and a laminated filter press device connected in sequence. The sludge receiving and storage device is used to store the wet sludge to be dehydrated, and the sludge stirring and wall-breaking device is used to mix the agent with the wet sludge to be dehydrated and stir them evenly. Figure 4-13 The laminated filter press equipment includes a filter press frame 100, on which a feed pipe 102, a material discharging crane, a filter press device and a discharge hopper 103 are provided. The feed pipe 102 is connected to the sludge mixing and wall-breaking device. Two material discharging cranes are provided, and the two material discharging cranes are respectively arranged on both sides of the filter press device. The material discharging crane can be movably installed on the filter press frame 100. The filter press device includes a filter press power mechanism and a filter press box 201. The filter press power mechanism is arranged on the filter press frame 100, and the filter press power mechanism provides filter press power for the filter press box 201. The present invention does not limit the filter press power mechanism. Specifically, in the present invention, The filter press power mechanism in the embodiment is a hydraulic press 206, the output end of the hydraulic press 206 is connected to the pressing plate, and the pressing plate is driven to rise and fall by the hydraulic press 206 to realize the filtration of the wet sludge. The filter press box 201 is provided with two corresponding to the cloth unloading crane, and the two filter press boxes 201 are movably arranged on the filter press frame 100. Specifically, the filter press frame 100 is provided with a filter box guide rail 202, and the bottom of the filter press box 201 is provided with a filter box roller 203. The filter press box 201 is movably mounted on the filter box guide rail 202 through the filter box roller 203. The cloth unloading crane is used to stack cloth into the filter press box 201 and unload the dehydrated sludge in the filter press box 201.

[0043] For details, see Figure 11-12 In this embodiment, the filter press box 201 includes a box body 2011 and a bottom plate 2013. The inner wall of the box body 2011 is provided with a plurality of guide bars 2012. The guide bars 2012 are vertically arranged, and gaps are provided between adjacent guide bars 2012. The gaps form guide grooves for liquid flow. The water removed by the filter press can be quickly diverted from the filter press box 201 to the outside of the filter press box 201 through the guide grooves, thereby improving the filter press efficiency.

[0044] The filter press device also includes a filter box moving drive mechanism, which drives the filter press box 201 to move on the filter press frame 100. The present utility model does not limit the filter box moving drive mechanism. Specifically, in this embodiment, the filter box moving drive mechanism is a horizontal hydraulic cylinder 204, and the piston rod end of the horizontal hydraulic cylinder 204 is connected to the filter press box 201. The filter press box 201 is driven to move on the filter box guide rail 202 by the extension and contraction of the piston rod of the horizontal hydraulic cylinder 204, thereby driving the filter press box 201 to move between the two operating positions of cloth and filter pressing, completing the cloth and filter pressing operations of the filter press box 201.

[0045] The filter press device also includes a filter cloth lifting power mechanism, which is arranged below the filter press box 201, and the bottom plate 2013 is movably arranged in the box body 2011. The output end of the filter cloth lifting power mechanism is transmission connected with the bottom plate 2013. The utility model does not limit the filter cloth lifting power mechanism. Specifically, in this embodiment, the filter cloth lifting power mechanism is a lifting hydraulic cylinder 205, and the piston rod end of the lifting hydraulic cylinder 205 is transmission connected with the bottom plate 2013. The piston rod of the lifting hydraulic cylinder 205 is extended and retracted to drive the bottom plate 2013 to rise and fall in the filter press box 201, thereby realizing the lifting of the filter cloth in the filter press box 201 and assisting in completing the cloth and unloading operations. The lifting hydraulic cylinder 205 can be fixedly set at the material distributing and unloading operation position of the filter press frame 100, and does not need to move synchronously with the filter press box 201. When the filter press box 201 moves to the material distributing and unloading operation position, the lifting hydraulic cylinder 205 is located below the filter press box 201, which facilitates the lifting hydraulic cylinder 205 to lift the bottom plate 2013 of the filter press box 201.

[0046] See also Figure 3 、 Figures 8-10 The material discharging crane includes a crane frame 101, which is movably mounted on the filter press frame 100. Specifically, the filter press frame 100 is provided with a frame guide rail 104, and the bottom of the crane frame 101 is provided with a frame roller 105. The crane frame 101 is movably mounted on the frame guide rail 104. The movement of the crane frame 101 is driven by a crane power mechanism. In the present utility model, the crane power mechanism is not limited. Specifically, in this embodiment, the crane power mechanism is a drive motor or a drive cylinder.

[0047] The traveling frame 101 is provided with an upper cloth roller 106, a lower cloth roller 107, an upper guide roller 108, an upper steering roller 109, a lower guide roller 110 and a cloth unloading drive assembly. The upper cloth roller 106 is used to release and retract the upper filter cloth 112, and the lower cloth roller 107 is used to release and retract the lower filter cloth 113. The upper filter cloth 112 passes through the upper cloth roller 106, the upper guide roller 108, the upper steering roller 109 and the cloth unloading drive assembly in sequence. The lower filter cloth 113 passes through the lower cloth winding roller 107, the lower guide roller 110 and the cloth unloading drive assembly in sequence. The end of the conveying pipe 102 is provided with a loading port 114, and the loading port 114 is arranged above the lower filter cloth 113. The discharge hopper 103 is arranged at the unloading end of the cloth unloading crane, and the discharge hopper 103 is arranged below the cloth unloading drive assembly. The opening width of the discharge hopper 103 is greater than or equal to the width of the lower filter cloth 113.

[0048] The cloth discharging drive assembly includes an upper pressure roller 115 and a chain conveyor 116. The upper pressure roller 115 is rotatably mounted on the cloth discharging crane, and the chain conveyor 116 is mounted on the crane frame 101. The upper pressure roller 115 is located above one end of the chain conveyor 116. The upper pressure roller 115 cooperates with the chain of the chain conveyor 116 to compress the upper filter cloth 112 and the lower filter cloth 113, and drives the upper filter cloth 112 and the lower filter cloth 113 to move, thereby distributing and discharging the cloth. After the lower filter cloth 113 emerges from the lower cloth winding roller 107, it passes around the lower guide roller 110 and enters the chain conveyor 116. The lower filter cloth 113 is transported by the chain conveyor 116, providing better support for the wet sludge on the lower filter cloth 113. The loading port 114 and the discharge hopper 103 are respectively located above and below the other end of the chain conveyor 116.

[0049] The upper pressure roller 115 is installed on the cloth unloading crane through a pressure roller adjustment mechanism 117. The pressure roller adjustment mechanism 117 adjusts the distance between the upper pressure roller 115 and the chain conveyor 116. Specifically, in this embodiment, the pressure roller adjustment mechanism 117 can be a cylinder, and both ends of the upper pressure roller 115 are installed through the cylinder.

[0050] The two ends of the upper pressing roller 115 are edge pressing sections 1151 and the middle part is an idle section 1152. The diameter of the edge pressing section 1151 is larger than the diameter of the idle section 1152 (see Figure 13The pressure edge sections 1151 at both ends of the upper pressing roller 115 have a large diameter. When the upper pressing roller 115 drives the upper filter cloth 112 and the lower filter cloth 113 to move while wrapped with wet sludge, only the pressure edge sections 1151 of the upper pressing roller 115 press the edges of the upper filter cloth 112 and the lower filter cloth 113 and cooperate with the chain conveyor 116 to drive the filter cloth to move. The idle running section 1152 in the middle of the upper pressing roller 115 does not press the filter cloth, so that the upper pressing roller 115 does not squeeze the wet sludge in the middle of the filter cloth during the process of driving the filter cloth to move, thereby preventing the wet sludge from being squeezed out of both sides of the filter cloth in advance before entering the filter press box 201.

[0051] The cloth unloading crane is also provided with a material guide baffle 118. Specifically, the cloth unloading crane is provided with a mounting door frame 119. The material guide baffle 118 is installed on the mounting door frame 119 through a first lifting mechanism 120. The present utility model does not limit the first lifting mechanism 120. Specifically, in this embodiment, the first lifting mechanism 120 is a cylinder; the material guide baffles 118 are symmetrically provided with two, and the two material guide baffles 118 are arranged above the lower filter cloth 113 and behind the feeding port 114. The wet sludge flowing out of the feeding port 114 and falling onto the lower filter cloth 113 is transported in the space between the two material guide baffles 118 and is not easy to fall from both sides of the lower filter cloth 113.

[0052] The length of the idling section 1152 of the upper pressing roller 115 is greater than or equal to the distance between the two material guide baffles 118, ensuring that the length of the idling section 1152 is greater than or equal to the width of the wet sludge on the lower filter cloth 113, and preventing the edge pressing section 1151 of the upper pressing roller 115 from squeezing the wet sludge. Specifically, in this embodiment, the length of the idling section 1152 of the upper pressing roller 115 is equal to the distance between the two material guide baffles 118.

[0053] The spreading roller 124 is also rotatably provided on the carriage 101, and the spreading roller 124 is installed on the cloth unloading carriage through a second lifting mechanism 121. The spreading roller 124 is provided with a forward spiral and a reverse spiral, and the forward spiral and the reverse spiral are both turned toward the end of the spreading roller 124, so that when the spreading roller 124 rotates, the forward and reverse spirals contact the filter cloth, driving the filter cloth to unfold toward the two ends of the spreading roller 124. The present invention does not limit the second lifting mechanism 121. Specifically, in this embodiment, the second lifting mechanism 121 is a cylinder.

[0054] The traveling frame 101 is also provided with an upper cleaning roller 122 and a lower cleaning roller 123. The upper cleaning roller 122 and the lower cleaning roller 123 are both provided with cleaning brushes. The upper cleaning roller 122 and the lower cleaning roller 123 are respectively used to clean the sludge remaining on the upper filter cloth 112 and the lower filter cloth 113. Specifically, the upper cleaning roller 122 is arranged between the upper guide roller 108 and the upper steering roller 109, and the lower cleaning roller 123 is arranged between the lower guide roller 110 and the chain conveyor 116, and the setting height of the lower cleaning roller 123 is above the discharge hopper 103.

[0055] The wet sludge filter press system also includes a deviation correction device, which includes a sensor and a servo controller. The servo controller is connected to the sensor signal, and the servo controller controls and adjusts the position of the upper cloth roll 106 and the lower cloth roll 107. Specifically, the servo controller drives the actuators of the upper cloth roll 106 and the lower cloth roll 107 to adjust and move from the original center position to the same direction of the filter cloth deviation side, so that the filter cloth can be stably wound within the set range of the upper cloth roll 106 or the lower cloth roll 107 until the filter cloth deviation signal of the sensor disappears. The servo controller will quickly drive the actuators of the upper cloth roll 106 and the lower cloth roll 107 from the adjusted position back to the original center position, thereby realizing automatic deviation correction during the filter cloth winding process; in this embodiment In this example, the actuator can be an electric cylinder, and the upper cloth roller 106 and the lower cloth roller 107 are installed on the traveling frame 101 through a mounting bracket and an adjustment guide rail. The electric cylinder is transmission-connected to the mounting bracket. Under the signal instruction of the servo controller, the electric cylinder drives the mounting bracket to move on the adjustment guide rail to adjust the position of the upper cloth roller 106 and the lower cloth roller 107, so that the filter cloth can be stably wound on the upper cloth roller 106 and the lower cloth roller 107, thereby realizing automatic deviation correction of the filter cloth.

[0056] The feeding port 114 is configured as a duckbill type (see Figure 5 ), a feed valve is provided on the feed pipe 102.

[0057] See also Figure 2 The sludge receiving and storage equipment includes a hydraulic slide silo 301 and a first-stage screw pump 302. The discharge port of the hydraulic slide silo 301 is connected to the feed port of the first-stage screw pump 302. The discharge port of the hydraulic slide silo 301 is provided with a maintenance gate valve 303 and a unloading screw 304. The hydraulic slide silo 301 is used to store wet sludge to be dehydrated. The discharge port of the first-stage screw pump 302 is connected to the sludge stirring and wall-breaking equipment.

[0058] See also Figure 3The sludge mixing and wall breaking equipment includes a chemical adding device 401, a mixer 402 and a secondary screw pump 403. The discharge port of the primary screw pump 302 is connected to the feed port of the mixer 402. The discharge port of the mixer 402 is provided with a unloading gate valve 404. The chemical adding device 401 is connected to the mixer 402. The discharge port of the mixer 402 is connected to the feed port of the secondary screw pump 403. The discharge port of the secondary screw pump 403 is connected to the delivery pipe 102.

[0059] The operation process of this utility model is as follows:

[0060] 1. The wet sludge is stored in the hydraulic carriage silo 301. Under the action of the primary screw pump 302, the wet sludge is discharged from the hydraulic carriage silo 301 through the inspection gate valve 303, the discharge screw 304 and the pipeline to the mixer 402;

[0061] Second, the wet sludge enters the mixer 402, and the reagent adding device 401 adds reagent into the mixer 402. The reagent and wet sludge are mixed evenly in the mixer 402. Then, under the action of the secondary screw pump 403, the wet sludge is discharged from the mixer 402 through the discharge gate valve 404 to the feed pipe 102, and is then transported to the material distribution and unloading crane through the feed pipe 102;

[0062] 3. Fabric:

[0063] In the initial state, the filter press box 201 is at the material discharging end of the material discharging crane, that is, below the end of the chain conveyor 116 away from the discharging hopper 103. The piston rod of the lifting hydraulic cylinder 205 is extended, driving the bottom plate 2013 to rise to the upper part of the filter press box 201.

[0064] The lower filter cloth 113 passes through the lower guide roller 110 and the chain conveyor 116 from the lower cloth winding roller 107 to the upper pressure roller 115 in sequence. The wet sludge is transported through the feeding pipe 102 and flows out from the feeding port 114 and falls on the lower filter cloth 113. The wet sludge is transported on the lower filter cloth 113. The first lifting mechanism 120 drives the guide baffle 118 to descend, guiding and limiting the wet sludge on the lower filter cloth 113 to prevent the wet sludge from falling. The upper filter cloth 112 passes through the upper guide roller 108 and the upper steering roller 109 from the upper cloth winding roller 106 to the chain conveyor 116 and the upper pressure roller 115 in sequence. Under the action of the upper pressure roller 115, the upper filter cloth 112 and the lower filter cloth 113 are wrapped with the wet sludge and move.

[0065] The upper filter cloth 112 and the lower filter cloth 113 wrapped with wet sludge fall into the filter press box 201 of the filter press device. At the same time, the driving power mechanism drives the driving frame 101 to reciprocate on the frame guide rail 104, thereby driving the upper filter cloth 112 and the lower filter cloth 113 wrapped with wet sludge to be laid in a stacked state in the filter press box 201, and at the same time, the piston rod of the lifting hydraulic cylinder 205 contracts, driving the bottom plate 2013 to descend synchronously, so that the stacked filter cloths slowly descend, the cloth is evenly laid, and the cloth efficiency is high. During the cloth laying process, the second lifting mechanism 121 drives the spreading roller 124 to rise to prevent the spreading roller 124 from affecting the movement of the filter cloth.

[0066] 4. Filter Press:

[0067] After the filter cloth in the filter press box 201 is full, the piston rod of the lifting hydraulic cylinder 205 is reset to avoid interference with the filter press box 201. The piston rod of the horizontal hydraulic cylinder 204 is extended, driving the filter press box 201 to move to the bottom of the hydraulic press 206. The hydraulic press 206 drives the pressing plate to descend, and performs a filter pressing operation on the filter cloth in the filter press box 201 to squeeze out the moisture in the wet sludge on the filter cloth. The squeezed out moisture quickly flows out from the guide groove in the filter press box 201. After the filtration is completed, the piston rod of the horizontal hydraulic cylinder 204 is retracted, driving the filter press box 201 to move to the cloth unloading end of the cloth unloading crane.

[0068] 5. Unloading:

[0069] After the filter press box 201 moves to the cloth unloading end of the cloth unloading crane, the piston rod of the lifting hydraulic cylinder 205 extends, driving the bottom plate 2013 to rise until the top of the filter cloth rises to the top of the filter press box 201;

[0070] The upper cloth roller 106 and the lower cloth roller 107 on the cloth unloading crane move in opposite directions, pulling out the upper filter cloth 112 and the lower filter cloth 113 in the filter press box 201. At the same time, the piston rod of the lifting hydraulic cylinder 205 continues to extend, driving the bottom plate 2013 to rise synchronously, continuously lifting the filter cloth.

[0071] After the upper filter cloth 112 and the lower filter cloth 113 move in opposite directions and separate, the dehydrated dry sludge sheet is on the lower filter cloth 113. At this time, the first lifting mechanism 120 drives the material guide baffle 118 to rise to prevent the material guide baffle 118 from affecting the movement of the dry sludge sheet. The dry sludge sheet falls into the discharge hopper 103 after passing through the chain conveyor 116. The dry sludge is transported to the storage yard or other process equipment by the screw conveyor equipment;

[0072] During the unloading process, the second lifting mechanism 121 drives the spreading roller 124 to descend. The forward spiral and reverse spiral on the spreading roller 124 assist in spreading the filter cloth to prevent the wrinkles on the filter cloth from affecting the next cloth. During the unloading process, the upper cleaning roller 122 and the lower cleaning roller 123 sweep off the dry sludge remaining on the filter cloth.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A wet sludge filter press system, characterized in that: The invention comprises a sludge receiving and storing device, a sludge stirring and wall-breaking device and a laminated filter press device connected in sequence, wherein the sludge receiving and storing device is used to store wet sludge to be dehydrated, the sludge stirring and wall-breaking device is used to mix the agent with the wet sludge to be dehydrated and stir them uniformly, and the laminated filter press device comprises a filter press frame (100), the filter press frame (100) is provided with a feed pipe (102), a material discharging crane, a filter press device and a discharge hopper (103), the feed pipe (102) is connected to the sludge stirring and wall-breaking device, the material discharging crane is provided with two, and the two material discharging cranes are respectively arranged on the filter press device On both sides, the material discharging crane is movably mounted on the filter press frame (100); the filter press device comprises a filter press power mechanism and a filter press box (201); the filter press power mechanism is arranged on the filter press frame (100); the filter press power mechanism provides filter press power for the filter press box (201); two filter press boxes (201) are provided corresponding to the material discharging cranes; the two filter press boxes (201) are movably mounted on the filter press frame (100); the material discharging cranes are used to stack material into the filter press box (201) and to discharge the dehydrated sludge in the filter press box (201).

2. The wet sludge filter press system according to claim 1, characterized in that: The filter press box (201) comprises a box body (2011) and a bottom plate (2013); the inner wall of the box body (2011) is provided with a plurality of guide bars (2012); the guide bars (2012) are arranged vertically, and gaps are provided between adjacent guide bars (2012).

3. The wet sludge filter press system according to claim 2, characterized in that: The filter press device further comprises a filter box moving drive mechanism and a filter cloth lifting power mechanism, wherein the filter box moving drive mechanism drives the filter press box (201) to move on the filter press frame (100), the filter cloth lifting power mechanism is arranged below the filter press box (201), the bottom plate (2013) is movably arranged in the box body (2011), and the output end of the filter cloth lifting power mechanism is transmission-connected to the bottom plate (2013).

4. The wet sludge filter press system according to claim 3, characterized in that: The cloth unloading crane comprises a crane frame (101), the crane frame (101) is movably mounted on the filter press frame (100), an upper cloth rolling roller (106), a lower cloth rolling roller (107), an upper guide roller (108) and a cloth unloading drive assembly are rotatably provided on the crane frame (101), the upper cloth rolling roller (106) is used to release and retract the upper filter cloth (112), the lower cloth rolling roller (107) is used to release and retract the lower filter cloth (113), and the upper filter cloth (112) is rotated in accordance with the filter press frame (100). The lower filter cloth (113) passes through the upper cloth winding roller (106), the upper guide roller (108) and the cloth unloading drive assembly in turn, and the lower filter cloth (113) passes through the lower cloth winding roller (107) and the cloth unloading drive assembly in turn. The end of the conveying pipe (102) is provided with a feeding port (114), and the feeding port (114) is arranged above the lower filter cloth (113). The discharge hopper (103) is arranged at the discharge end of the cloth unloading crane, and the discharge hopper (103) is arranged below the cloth unloading drive assembly.

5. The wet sludge filter press system according to claim 4, characterized in that: The cloth unloading drive assembly includes an upper pressure roller (115) and a chain plate machine (116), wherein the upper pressure roller (115) is rotatably mounted on the cloth unloading crane, and the chain plate machine (116) is mounted on the crane frame (101). The upper pressure roller (115) is arranged above one end of the chain plate machine (116), and the feeding port (114) and the discharge hopper (103) are respectively arranged above and below the other end of the chain plate machine (116).

6. The wet sludge filter press system according to claim 5, characterized in that: The cloth unloading crane is also provided with a material guide baffle (118), and the cloth unloading crane is provided with a mounting door frame (119). The material guide baffle (118) is mounted on the mounting door frame (119) via a first lifting mechanism (120). Two material guide baffles (118) are symmetrically provided, and the two material guide baffles (118) are arranged above the lower filter cloth (113) and behind the loading port (114).

7. The wet sludge filter press system according to any one of claims 1 to 6, characterized in that: The sludge receiving and storing equipment includes a hydraulic carriage silo (301) and a first-stage screw pump (302), wherein the discharge port of the hydraulic carriage silo (301) is connected to the feed port of the first-stage screw pump (302), the hydraulic carriage silo (301) is used to store wet sludge to be dehydrated, and the discharge port of the first-stage screw pump (302) is connected to the sludge stirring and wall-breaking equipment.

8. The wet sludge filter press system according to claim 7, characterized in that: The discharge port of the hydraulic carriage silo (301) is provided with a maintenance gate valve (303) and a discharge screw (304).

9. The wet sludge filter press system according to claim 8, characterized in that: The sludge mixing and wall-breaking equipment includes a drug adding device (401), a mixer (402) and a secondary screw pump (403), the discharge port of the primary screw pump (302) is connected to the feed port of the mixer (402), the drug adding device (401) is connected to the mixer (402), the discharge port of the mixer (402) is connected to the feed port of the secondary screw pump (403), and the discharge port of the secondary screw pump (403) is connected to the feed pipe (102).

10. The wet sludge filter press system according to claim 9, characterized in that: The discharge port of the mixer (402) is provided with a discharge gate valve (404).

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