A filter mechanism for a filter press for dewatering sludge

Abstract

The application provides a filter mechanism of a filter press for sludge dewatering, comprising multiple filter plate assemblies, each of which comprises a left filter plate and a right filter plate, the outer ends of the left filter plate and the right filter plate are respectively provided with filter frames, the inner ends of the left filter plate and the right filter plate are respectively clamped with filter cloth bodies, and the filter plate assemblies are communicated with a distributor, further comprising: a filter cake treatment assembly for filter cake pressing and rapid discharging, the filter cake treatment assembly comprises a boss located at the outer end of the left filter plate and the right filter plate, the inner end of the boss is provided with an embedded cylinder, the inner end of the embedded cylinder is provided with an embedded groove, the inner end of the embedded groove is provided with a table rod, the outer end of the table rod is fixed with multiple movable table blocks, an embedded spring is arranged between each movable table block and the embedded cylinder, and the rear end of the table rod is provided with a fixed arc-shaped block. The application solves the problems that the filter cake of sludge dewatering cannot be rapidly treated and discharged, filter cake is left on the filter cloth, secondary filtration is affected, the filter cloth needs to be removed for cleaning, and a complex filter cloth cleaning procedure is caused.

Description

TECHNICAL FIELD

[0001] The present application relates to the filter press filter technical field, specifically, a kind of filter press filter mechanism for sludge dewatering. BACKGROUND

[0002] The filter press filter mechanism for sludge dewatering is mainly composed of filter plate, filter cloth and filter plate moving mechanism, and extrusion diaphragm is added on part of filter press. Filter plate is one of the core components of filter press, is usually made of high-strength engineering plastic or metal, has good pressure resistance and corrosion resistance, the surface of filter plate is usually designed with recessed groove or convex grain, to increase filter area and improve filtering efficiency, filter plate plays the role of supporting filter cloth and forming filter chamber in filter press;Filter cloth is a kind of porous filter medium, is usually made of natural fiber or synthetic fiber, such as cotton, nylon, polyester, etc., the aperture size and porosity of filter cloth determine its filtering precision and filtering speed, filter cloth plays the role of filtering and retaining solid particles in filter press. In the filtering process, the water in sludge is discharged through the pores of filter cloth, and solid particles are retained on the surface of filter cloth to form filter cake.

[0003] In the prior art, in the use process of filter press filtration:

[0004] (1) cannot quickly handle and discharge filter cake after sludge dewatering, causes residual filter cake on filter cloth, affects secondary filtration;

[0005] (2) filter cloth cleaning needs to be removed for cleaning, causing complex filter cloth cleaning procedures;

[0006] Therefore, we improve it and propose a filter press filter mechanism for sludge dewatering. SUMMARY

[0007] The present application aims at: in view of the design of the present filter press filtration, cannot quickly handle and discharge filter cake, causes residual filter cake on filter cloth after sludge pressure filtration, affects secondary filtration, filter cloth cleaning needs to be removed for cleaning, causing complex filter cloth cleaning procedures.

[0008] In order to achieve the above-mentioned application purpose, the present application provides the following technical solutions:

[0009] A filter press filter mechanism for sludge dewatering is provided to improve the above problems.

[0010] The present application is as follows:

[0011] A kind of filter mechanism of filter press for sludge dewatering, including multiple filter plate assemblies, single filter plate assembly includes left filter plate and right filter plate, the outer end of left filter plate and right filter plate is respectively equipped with filter frame, the inner end of left filter plate and right filter plate is respectively clamped with filter cloth body, filter plate assembly is connected with distributor, it further includes:

[0012] Filter cake processing assembly is used for filter cake filter pressing and fast unloading, and the filter cake processing assembly includes a boss located at the outer end of the left filter plate and the right filter plate, the inner end of the boss is provided with an embedded cylinder, the inner end of the embedded cylinder is provided with an embedded groove, the inner end of the embedded groove is provided with a table rod, the outer end of the table rod is fixed with a plurality of movable table blocks, an embedded spring is provided between each movable table block and the embedded cylinder, the rear end of the table rod is provided with a fixed arc block, the rear end of the fixed arc block is provided with a movable arc block and a movable arc groove, the rear end of the movable arc block and the movable arc groove is provided with a linkage rod, the left end of the linkage rod is provided with a toothed rod, the outer end of the toothed rod is provided with a linkage gear and a linkage rotating rod, and the two ends of the linkage rod are respectively provided with linkage grooves.

[0013] As a preferred technical solution of the present application, the boss is fixed at the outer end of the left filter plate and the right filter plate, the movable table block slides along the boss through the embedded cylinder, the embedded cylinder penetrates the outer end of the boss, the rear end of the embedded cylinder is connected with the embedded groove, the rear end of the embedded groove is provided with a fixed rod, the fixed rod is adhered to the outer side of the filter cloth body, the boss is adhered to the outer end of the fixed rod, and the fixed rod is fixedly connected with the left filter plate and the right filter plate.

[0014] As a preferred technical solution of the present application, the table rod is fixedly connected with the movable table block, the through openings are provided between the bosses arranged in the same vertical direction, and the movable table blocks arranged in the same vertical direction are connected by a group of table rods.

[0015] As a preferred technical solution of the present application, the fixed arc blocks are arranged at equal intervals on the outer surface of the rear end of a group of table rods, the movable arc blocks are arranged at equal intervals on the outer surface of the front end of the linkage rod, the movable arc grooves are arranged adjacent to the movable arc blocks, and the movable arc grooves are embedded in the front end of the linkage rod.

[0016] As a preferred technical solution of the present application, the toothed rod is fixed at the left end of the linkage rod, the front end of the toothed rod is meshingly connected with the linkage gear, the linkage gear is fixedly connected with the linkage rotating rod, the linkage gear and the toothed rod are arranged in groups, and the two ends of the toothed rod and the linkage rod slide along the linkage grooves at the two ends.

[0017] As a preferred technical solution of the present application, the linkage rotating rod penetrates between a plurality of linkage gears, and the lower end of the linkage rotating rod is provided with a rotating rod motor.

[0018] As the preferred technical scheme of the present application, the filter cloth tensioning assembly includes linkage strips located at both ends of the filter cloth body and connecting cloth, and the outer end of the connecting cloth is wound with a linkage rotating shaft. Displacement sensors are fixed between the filter cloth and the left filter plate and the filter cloth and the right filter plate.

[0019] As the preferred technical scheme of the present application, the linkage strips are arranged in two groups along the left and right sides of the filter cloth body, and each group of linkage strips is provided with two strips along the front and back of the filter cloth body. The outer ends of the two strips are fixed to a group of connecting cloth, and the outer end of the connecting cloth is fixedly connected with the linkage rotating shaft. The lower ends of the left and right groups of linkage rotating shafts are connected with each other through a rack and pinion. The bottom end of the linkage rotating shaft is connected with a linkage motor, and the linkage motor is signal-connected with the displacement sensor through a controller.

[0020] As the preferred technical scheme of the present application, the gas-liquid flow assembly is further provided, which is used for filtering liquid discharge and ventilation drying of the filter cloth. The gas-liquid flow assembly includes a filtering liquid discharge structure and a ventilation structure. The filtering liquid discharge structure includes a liquid outlet pipeline located at the lower end of the left filter plate and the right filter plate and a chamber for filtering liquid flow. The ventilation structure includes a ventilation pipeline located at the upper end of the left filter plate and the right filter plate and an air flow distribution pipeline.

[0021] As the preferred technical scheme of the present application, the chamber is located between the clamping of the left filter plate and the right filter plate. The liquid outlet pipeline is divided into a plurality of branch pipelines and a group of main pipelines. The plurality of branch pipelines are arranged at equal intervals at the lower end of the left filter plate and the right filter plate. The group of main pipelines is connected with the plurality of branch pipelines. The ventilation pipeline is divided into a plurality of branch air pipelines and a group of main air pipelines. The plurality of branch air pipelines are transversely connected with the group of main air pipelines. The air outlet end of the plurality of branch air pipelines is connected with the air flow distribution pipeline. The outer end of the plurality of branch air pipelines is provided with a groove. The inner end of the groove is threadedly connected with a wind baffle.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] In the scheme of the present application:

[0024] 1. Through efficient dewatering and filtering of sludge and treatment of filter cake, the filter cake treatment assembly can re-press and quickly discharge the filter cake in the later stage of sludge filtering, thereby improving the filtering efficiency and the filter cake treatment capacity.

[0025] 2. The filter cloth tensioning assembly can automatically detect the loosening of the filter cloth and timely tension it, thereby ensuring the comprehensiveness and stability of sludge filtering and improving the filtering quality.

[0026] 3. The gas-liquid flow assembly facilitates cleaning and drying of the filter cloth, prolongs the service life of the filter cloth, and also helps to keep the equipment clean and reduce the occurrence of faults.

[0027] 4. The movable parts are sealed by the sealing members, and the components are reasonably connected and arranged, so as to ensure the reliability and stability of the equipment and reduce the maintenance cost of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0029] Figure 2 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0030] Figure 3 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0031] Figure 4 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0032] Figure 5 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0033] Figure 6 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0034] Figure 7 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0035] Figure 8 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0036] Figure 9 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application; Figure 5 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0037] Figure 10 A schematic diagram of the overall structure of a filter mechanism of a filter press for sludge dewatering is provided in the present application;

[0038] Markings in the drawings:

[0039] 1, filter plate assembly; 2, left filter plate; 3, right filter plate; 4, filter frame; 5, boss; 6, inlay groove; 7, linkage rod; 8, toothed rod; 9, linkage groove; 10, linkage gear; 11, linkage rotating rod; 12, movable block; 13, table rod; 14, fixed arc block; 16, movable arc block; 17, movable arc groove; 18, liquid outlet pipeline; 19, chamber; 20, ventilation pipeline; 21, airflow distribution pipeline; 22, distributor; 23, inlay spring; 24, inlay cylinder; 25, linkage strip; 26, connecting cloth; 27, linkage rotating shaft; 28, displacement sensor. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0041] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but merely represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application. It should be noted that the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0042] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] As shown in the drawings, Figures 1-10 The present embodiment proposes a filter mechanism of a filter press for sludge dewatering, which comprises a plurality of filter plate assemblies 1, each of which comprises a left filter plate 2 and a right filter plate 3, the outer ends of the left filter plate 2 and the right filter plate 3 are respectively provided with filter frames 4, and the inner ends of the left filter plate 2 and the right filter plate 3 are respectively clamped with filter cloth bodies, the filter plate assemblies 1 are communicated with a distributor 22, and the filter mechanism further comprises:

[0044] The filter cake processing assembly is used for filter pressing and rapid discharging of filter cake, and comprises a boss 5 located at the outer end of the left filter plate 2 and the right filter plate 3, the inner end of the boss 5 is provided with an embedded cylinder 24, the inner end of the embedded cylinder 24 is provided with an embedded groove 6, the inner end of the embedded groove 6 is provided with a table rod 13, the outer end of the table rod 13 is fixed with a plurality of groups of movable table blocks 12, the embedded spring 23 is arranged between each group of movable table blocks 12 and the embedded cylinder 24, the rear end of the table rod 13 is provided with a fixed arc block 14, the rear end of the fixed arc block 14 is provided with a movable arc block 16 and a movable arc groove 17, the rear end of the movable arc block 16 and the movable arc groove 17 is provided with a linkage rod 7, the left end of the linkage rod 7 is provided with a toothed rod 8, the outer end of the toothed rod 8 is provided with a linkage gear 10 and a linkage rotating rod 11, and the two ends of the linkage rod 7 are respectively provided with linkage grooves 9.

[0045] The sludge is uniformly injected through the distributor 22, the filter plate is extruded and filtered, the filter cake processing assembly can push the filter block to move and be extruded again, the embedded spring 23 is used for easy rebound, and the cooperation of the components improves the filtering efficiency and the filter cake processing capacity.

[0046] The boss 5 is fixed at the outer end of the left filter plate 2 and the right filter plate 3, the movable table block 12 slides along the boss 5 through the embedded cylinder 24, the embedded cylinder 24 penetrates the outer end of the boss 5, the embedded cylinder 24 is connected through the embedded groove 6, the rear end of the embedded groove 6 is provided with a fixed rod, the fixed rod is adhered to the outer side of the filter cloth body, the boss 5 is adhered to the outer end of the fixed rod, and the fixed rod is fixedly connected with the left filter plate 2 and the right filter plate 3.

[0047] The table rod 13 is fixedly connected with the movable table block 12, the through openings are arranged between the bosses 5 arranged in the same vertical direction, and the movable table blocks 12 arranged in the same vertical direction are connected through a group of table rods 13.

[0048] The connection relationship between the components arranged in the same vertical direction can guarantee the overall function of the filter cake processing assembly, and this connection mode is helpful to realize the cooperation of the actions of each part of the filter cake processing assembly and improve the overall working efficiency.

[0049] The fixed arc blocks 14 are arranged at equal intervals on the outer surface of the rear end of a group of table rods 13, the movable arc blocks 16 are arranged at equal intervals on the outer surface of the front end of the linkage rod 7, the movable arc grooves 17 are arranged adjacent to the movable arc blocks 16, and the movable arc grooves 17 are embedded in the front end of the linkage rod 7.

[0050] The toothed rod 8 is fixed at the left end of the linkage rod 7, the front end of the toothed rod 8 is meshingly connected with the linkage gear 10, the linkage gear 10 is fixedly connected with the linkage rotating rod 11, the linkage gear 10 and the toothed rod 8 are arranged in groups, and the toothed rod 8 and the two ends of the linkage rod 7 slide along the linkage grooves 9 at the two ends.

[0051] The linkage rotating rod 11 penetrates among the multiple sets of linkage gears 10, and the lower end of the linkage rotating rod 11 is provided with a rotating rod motor.

[0052] The matching relationship of the toothed rod 8, the linkage gears 10 and other components realizes power transmission and component action. This matching mode can effectively transmit the power of the rotating rod motor and accurately control the left and right movement of the linkage rod 7, thereby realizing effective treatment of the filter block.

[0053] The reciprocating rotation of the rotating rod motor can effectively push the toothed rod 8 and the linkage rod 7 to move, thereby enhancing the adaptability and functionality of the equipment.

[0054] In use, sludge is injected into each chamber 19 through the distributor 22, and liquid flows out of the corresponding liquid outlet pipeline 18 under the extrusion of the corresponding left filter plate 2 and right filter plate 3. When the rate of liquid flow becomes slow, the toothed rod 8 outside the linkage rotating rod 11 is driven to move left and right along the linkage groove 9 through the rotation of the rotating rod motor. In the process of the toothed rod 8 moving left and right along the linkage groove 9, the linkage rod 7 at the outer end of the toothed rod 8 moves left and right at the rear end of the table rod 13. The fixed arc block 14 at the rear end of the table rod 13 sequentially contacts the movable arc-shaped groove 17 and the movable arc block 16 at the front end of the linkage rod 7, thereby driving the movable table block 12 at the front end of the table rod 13 to move forward and backward under the linkage of the boss 5 and the embedded cylinder 24, so as to push the filter block to move and be extruded again. In the movement of the table rod 13, each movable table block 12 and the embedded spring 23 between the embedded cylinder 24 are elastically moved, thereby facilitating rebound.

[0055] In this process, the activities of the table rod 13, the movable table block 12 and the boss 5 can avoid sludge entering the active parts. Each active part is sealed and connected by using a sealing element, such as a bearing, a sealing gasket, a magnetic fluid seal or a planetary reducer for rotation, and a sealing rubber ring for movement. Here, the sealing only needs to block sludge from entering the active parts during the filtering process, without excessive limitation.

[0056] The rotating rod motor herein can achieve reciprocating rotation, such as a direct current brush motor (which changes the current direction in the winding through the brush to realize the continuous rotation of the rotor coil, and can realize reciprocating rotation through a control circuit), a servo motor (which has high precision and high response speed, and can realize accurate reciprocating rotation through a control signal, thereby driving the linkage rotating rod 11 at the upper end to rotate clockwise and counterclockwise for a certain number of turns), which drives the toothed rod 8 to move left and right in the linkage groove 9, and further drives the linkage rod 7 to move left and right.

[0057] For example, Figure 5 and Figure 9As shown, as a preferred embodiment, on the basis of the above mode, further, it also includes filter cloth tensioning assembly for automatic tensioning of filter cloth loosening after long time use, the filter cloth tensioning assembly includes linkage strip 25 and connecting cloth 26 located at both ends of the filter cloth body, the outer end of the connecting cloth 26 is wound with linkage shaft 27, and the displacement sensor 28 is fixed between the filter cloth and the left filter plate 2 and the filter cloth and the right filter plate 3.

[0058] When the displacement sensor 28 senses that the filter cloth is loosened, the linkage motor drives the linkage shaft 27 to rotate through the rack and pinion, automatically tensioning the filter cloth, ensuring the stability and comprehensiveness of the filtration;

[0059] Based on the signal interaction of the sensor and the motor, the tensioning degree of the filter cloth can be accurately controlled to ensure that the filtration effect is always in good condition.

[0060] The linkage strip 25 is provided with two groups along the left and right sides of the filter cloth body, and each group of linkage strips 25 is provided with two linkage strips 25 along the front and back of the filter cloth body, the outer ends of the two linkage strips 25 are fixed with a group of connecting cloths 26, the outer end of the connecting cloth 26 is fixedly connected with the linkage shaft 27, the lower ends of the left and right linkage shafts 27 are connected with each other through the rack and pinion, the bottom end of the linkage shaft 27 is connected with the linkage motor, and the linkage motor and the displacement sensor 28 are connected through the controller signal.

[0061] When the filter cloth tensioning assembly needs to be used, the displacement sensor 28 must sense that the filter cloth body moves away from the left filter plate 2 or the right filter plate 3, and this movement must be caused by the loosening of the filter cloth body and the left filter plate 2 or the right filter plate 3. Such loosening is easy to make the filtration of sludge not comprehensive, therefore, when the displacement sensor 28 generates a signal, the signal is transmitted to the linkage motor, the linkage motor drives the linkage shaft 27 connected with the rack and pinion to rotate, and drives the connecting cloth 26 on both sides of the same filter cloth body to be wound at the same time, thereby pushing the filter cloth body to be tensioned in the left filter plate 2 or the right filter plate 3, thereby ensuring the stability and comprehensiveness of the filtration;

[0062] The displacement sensor 28 here can adopt a small pull rope displacement sensor 28 of TEConnectivitySM1 series (principle: through the expansion and contraction of the pull rope to drive the mechanical structure or electronic elements inside the sensor to produce corresponding changes, thereby measuring the displacement);

[0063] The signal transmission control principle between the displacement sensor 28 and the linkage motor is mainly based on the measurement of the displacement of the sensor and the interaction with the motor control signal. The control instructions generated by the controller (such as pulse signals, voltage signals, etc.) are transmitted to the linkage motor through devices such as drivers. The driver amplifies and converts the control instructions to power, and drives the linkage motor to move according to the instructions. For example, for a stepper motor, the driver will control the number of steps and direction of the stepper motor according to the pulse signal and direction signal from the controller; for a servo motor, the driver will control the speed and torque of the servo motor according to the voltage or current signal from the controller, so as to realize accurate control of the displacement of the object. During the movement of the motor, the displacement sensor 28 will continue to monitor the displacement change of the object in real time and feed back the new displacement signal to the controller. The controller calculates and analyzes again according to the new displacement feedback signal to judge whether the movement of the motor reaches the expected target. If there is a deviation, the controller will adjust the control instructions in time to make the movement of the motor more accurate, until the displacement of the object reaches the set target value.

[0064] The linkage motor and the displacement sensor 28 herein can only monitor the loosening of the filter cloth body and transmit signals to the linkage motor to control the re-tensioning of the filter cloth body.

[0065] As shown in Figure 7 and Figure 10 , as a preferred embodiment, on the basis of the above mode, further comprising a gas-liquid flow assembly for filter liquid discharge and filter cloth drying, the gas-liquid flow assembly comprising a filter liquid discharge structure and a ventilation structure, the filter liquid discharge structure comprising a liquid outlet pipeline 18 located at the lower end of the left filter plate 2 and the right filter plate 3 and a chamber 19 for filter liquid flow, and the ventilation structure comprising a ventilation pipeline 20 located at the upper end of the left filter plate 2 and the right filter plate 3 and an air flow distribution pipeline 21.

[0066] After the filtration is completed, the filter cloth can be cleaned and dried by the assembly to ensure the cleanliness and performance of the filter cloth, which is beneficial to the next filtration work

[0067] The chamber 19 is located between the clamping of the left filter plate 2 and the right filter plate 3, the liquid outlet pipeline 18 is divided into multiple sub-pipes and a total pipe, the multiple sub-pipes are arranged at equal intervals at the lower end of the left filter plate 2 and the right filter plate 3, and the total pipe is connected through between the multiple sub-pipes, the ventilation pipeline 20 is divided into multiple sub-air pipes and a total air pipe, the multiple sub-air pipes are transversely connected through between the total air pipe, the air outlet end of the multiple sub-air pipes is connected through between the air flow distribution pipeline 21, and the outer end of the multiple sub-air pipes is provided with a groove, and the inner end of the groove is threadedly connected with a baffle.

[0068] When the filter cake is completely removed, when the secondary filtrate is completed, each filter cloth needs to be cleaned, in this process, the cleaning water is directly injected through the distributor 22, the inside of the chamber 19 is flushed, the cleaning water is output through the filtrate outlet structure, after the water flow is completely output, each filter cloth can be dried through the ventilation structure, but before drying, if the filter cloth is not completely cleaned, the air inlet of the ventilation structure can be connected with the liquid injection pipeline, this connection can be controlled by the control device, which uses the control technology of the existing technology bidirectional valve, the filter cloth is fully cleaned by injecting liquid into the ventilation structure, and then the valve controls the air to be injected through the ventilation structure to dry the filter cloth.

[0069] Specific embodiments of the filter press filter assembly of the present application:

[0070] Example one: daily continuous sludge filtration operation

[0071] (I) Preparation stage:

[0072] Check the components of the filter press filter mechanism to ensure that the filter plate assembly 1 (left filter plate 2, right filter plate 3, filter frame 4, filter cloth) is installed correctly, the filter cloth is clamped at the inner end of the left and right filter plates 3, and the filter plate assembly 1 is normally connected through the distributor 22;

[0073] Confirm that the filter cake treatment assembly components are connected stably, the boss 5 is fixed at the outer end of the left and right filter plates 3, the movable block 12 can freely slide in the boss 5 through the embedded cylinder 24, the components are connected tightly and the embedded spring 23 is in normal elastic state; The transmission components such as linkage rod 7, toothed rod 8, linkage gear 10, linkage rotating rod 11 are installed in place, and the rotating rod motor is in normal standby;

[0074] Check the filter cloth tensioning assembly, the linkage strip 25, the connecting cloth 26 and the linkage rotating shaft 27 are installed correctly, the displacement sensor 28 is fixed between the filter cloth and the left and right filter plates 3 and can work normally, and the linkage motor and the displacement sensor 28 are normally connected through the controller signal;

[0075] The filtrate outlet structure (liquid outlet pipeline 18, chamber 19) and the ventilation structure (ventilation pipeline 20, air flow distribution pipeline 21, wind deflector) of the gas-liquid flow assembly are not blocked, and the pipelines are connected tightly.

[0076] (II) Filtration stage:

[0077] Uniformly inject sludge into each chamber 19 through the distributor 22, the left filter plate 2 and the right filter plate 3 extrude the sludge, and the liquid flows out from the corresponding liquid outlet pipeline 18, starting the sludge filtration process;

[0078] When the liquid flow rate slows down as the filtration proceeds, the rotating rod motor is started, the rotating rod motor drives the linkage rotating rod 11 to rotate, the toothed rod 8 outside the linkage rotating rod 11 moves left and right along the linkage groove 9, and then drives the linkage rod 7 to move left and right at the rear end of the table rod 13. The fixed arc block 14 at the rear end of the table rod 13 sequentially contacts the movable arc-shaped groove 17 and the movable arc-shaped block 16 at the front end of the linkage rod 7, so that the movable table block 12 at the front end of the table rod 13 moves forward and backward under the linkage of the boss 5 and the embedded cylinder 24, pushes the filter block to move and extrude again, and the movable table block 12 is facilitated to rebound under the action of the embedded spring 23 during movement, thereby improving the filter cake treatment effect.

[0079] (Three) Filter cloth tensioning stage:

[0080] During the filtration process, the displacement sensor 28 monitors the displacement between the filter cloth body and the left filter plate 2 or the right filter plate 3 in real time. If the filter cloth body is loose, the displacement sensor 28 senses that the filter cloth body moves relative to the filter plate, and then transmits a signal to the linkage motor.

[0081] After receiving the signal, the linkage motor drives the linkage rotating shaft 27 connected with the rack and pinion to rotate, and drives the connecting cloth 26 on both sides of the same filter cloth body to be wound at the same time, so that the filter cloth body is tensioned in the left filter plate 2 or the right filter plate 3, and the stability and comprehensiveness of the filtration are ensured.

[0082] (Four) Cleaning and drying stage:

[0083] When the filter block is completely removed, after the secondary filtrate is completed, the cleaning water is directly injected through the distributor 22, the cleaning water flushes the inside of the chamber 19, and then is collected into the main pipe through the multi-component pipe of the filtrate discharge structure and is discharged;

[0084] After the water flow is completely output, the filter cloth body is dried by using the ventilation structure, the air of the ventilation pipeline 20 is opened, the air enters the airflow distribution pipeline 21 through the multi-component air pipe, and the filter cloth body is subjected to ventilation drying treatment, so as to prepare for the next filtration.

[0085] Example two: complex sludge filtration and deep cleaning of filter cloth:

[0086] (One) Preparation stage:

[0087] The preparation stage of example one is the same, and each component of the filter press filtration mechanism is comprehensively checked to ensure that the equipment is in the best working condition. In particular, the sealing of the sealing element to the movable part is checked to ensure that the sludge does not enter the movable part to affect the operation of the equipment.

[0088] (Two) Filtration stage:

[0089] The distributor 22 injects sludge with complex components into the chamber 19, and the left and right filter plates 3 extrude the sludge for filtration. Due to the complexity of the sludge components, the filtration is difficult, and the liquid outflow rate may slow down;

[0090] When the liquid outflow rate slows down, the rotating rod motor starts, and through the transmission of the linkage rotating rod 11, the toothed rod 8, the linkage gear 10 and other components, the linkage rod 7 drives the table rod 13 and the movable table block 12 to move, extruding and moving the filter block multiple times to ensure sufficient filtration and improve the filter cake processing efficiency.

[0091] When the sludge pressure filtration is difficult, liquid can be injected through the ventilation structure to dilute the sludge in the chamber 19, facilitating the filtration speed of the sludge in the chamber 19.

[0092] (Three) Filter cloth tensioning stage:

[0093] Due to the complexity of the sludge, the filter cloth bears a large pressure and is more likely to loosen. Once the displacement sensor 28 detects a change in the displacement between the filter cloth body and the filter plate, it immediately sends a signal to the linkage motor.

[0094] The linkage motor quickly responds, rotates the linkage rotating shaft 27 through rack and pinion transmission, quickly tensions the filter cloth, maintains the stability and effectiveness of the filtration, and prevents the sludge from not being fully filtered due to filter cloth loosening.

[0095] (Four) Cleaning and drying stage

[0096] After filtration is completed, a large amount of cleaning water is first injected through the distributor 22 to preliminarily flush the chamber 19 and the filter cloth body, and the flushing water is discharged through the filtrate outlet structure.

[0097] If the filter cloth body is still not clean after preliminary flushing, the air inlet of the ventilation structure is connected to the liquid injection pipeline through the control device, and a special cleaning liquid is injected into the ventilation structure using bidirectional valve control technology to thoroughly clean the filter cloth body.

[0098] After cleaning is completed, the liquid injection pipeline is closed, the ventilation valve is opened, and the filter cloth body is dried through the ventilation structure to ensure that the filter cloth restores good performance and can be put into the next filtration work.

[0099] In use, the sludge is injected into each chamber 19 by the distributor 22, and the liquid is discharged from the corresponding liquid outlet pipe 18 under the extrusion of the corresponding left filter plate 2 and right filter plate 3; when the liquid discharge rate becomes slow, the rotation of the rotating shaft motor drives the toothed rod 8 outside the linkage rotating shaft 11 to move left and right along the linkage groove 9; in the process of moving left and right along the linkage groove 9, the linkage rod 7 at the outer end of the toothed rod 8 moves left and right at the rear end of the table rod 13; the fixed arc block 14 at the rear end of the table rod 13 successively contacts the movable arc-shaped groove 17 and the movable arc block 16 at the front end of the linkage rod 7, and drives the movable table block 12 at the front end of the table rod 13 to move forward and backward under the linkage of the boss 5 and the embedded cylinder 24, so as to push the filter block to move and be extruded again; in the movement of the table rod 13, the movable table block 12 and the embedded spring 23 between the embedded cylinder 24 are elastically moved, which is convenient for rebounding.

[0100] When the filter cloth tensioning assembly needs to be used, at this time, the displacement sensor 28 senses that the filter cloth body moves relative to the left filter plate 2 or the right filter plate 3, and the movement is caused by loosening of the filter cloth body relative to the left filter plate 2 or the right filter plate 3, which easily causes the sludge filtration to be not comprehensive, so when the displacement sensor 28 generates a signal, the signal is transmitted to the linkage motor, the linkage motor drives the linkage rotating shaft 27 connected with the rack and pinion to rotate, and drives the two sides of the same filter cloth body to be wound at the same time, thereby pushing the filter cloth body to be tensioned in the left filter plate 2 or the right filter plate 3, and thereby ensuring the stability and comprehensiveness of the filtration.

[0101] When the filter block is completely removed and the secondary filtrate is completed, each filter cloth body needs to be cleaned, in this process, cleaning water is directly injected into the chamber 19 through the distributor 22, and the cleaning water is output through the filtrate outlet structure, and after the water flow is completely output, each filter cloth body can be dried through the ventilation structure, but if the filter cloth body is not completely cleaned before drying, the air inlet of the ventilation structure can be connected with the liquid injection pipe, and this connection can be controlled by the control device, which adopts the control technology of the existing two-way valve, and the filter cloth body is fully cleaned by injecting liquid into the ventilation structure, and then the valve controls the air to be injected through the ventilation structure to dry the filter cloth body.

[0102] The above examples are only used to illustrate the technical solutions described in the present application and are not limited to the technical solutions described in the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments, and any modification or equivalent replacement of the present application; and all technical solutions and improvements without departing from the spirit and scope of the application are encompassed in the scope of the claims of the present application.

Claims

1. A filter mechanism for a filter press for dewatering sludge, comprising a plurality of filter plate assemblies (1), characterized in that, Single filter plate assembly (1) including left filter plate (2) and right filter plate (3), the outer end of left filter plate (2) and right filter plate (3) is equipped with filter frame (4) respectively, the inner end of left filter plate (2) and right filter plate (3) is clamped with filter cloth body respectively, the filter plate assembly (1) is connected with distributor (22), further comprising: Filter cake processing assembly for filter cake filter pressing and rapid discharge, the filter cake processing assembly includes the boss (5) at the outer end of left filter plate (2) and right filter plate (3), the inner end of boss (5) is equipped with inner embedding cylinder (24), the inner end of inner embedding cylinder (24) is equipped with inner embedding groove (6), the inner end of inner embedding groove (6) is equipped with table rod (13), the outer end of table rod (13) is fixed with multiple groups of movable table block (12), each group movable table block (12) is equipped with inner embedding spring (23) between inner embedding cylinder (24), the rear end of table rod (13) is equipped with fixed arc block (14), the rear end of fixed arc block (14) is equipped with movable arc block (16) and movable arc slot (17), the rear end of movable arc block (16) and movable arc slot (17) is equipped with linkage rod (7), the left end of linkage rod (7) is equipped with toothed rod (8), the outer end of toothed rod (8) is equipped with linkage gear (10) and linkage rotating rod (11), the both ends of linkage rod (7) are equipped with linkage slot (9) respectively.

2. A filter mechanism for a filter press for dewatering sludge according to claim 1, characterized in that The boss (5) is fixed at the outer end of left filter plate (2) and right filter plate (3), the movable table block (12) is slid along the boss (5) through the inner embedding cylinder (24), the inner embedding cylinder (24) penetrates the outer end of boss (5), the rear end of inner embedding cylinder (24) is connected with inner embedding groove (6), the rear end of inner embedding groove (6) is equipped with fixed rod, the fixed rod is adhered to the outer side of filter cloth body, the boss (5) is adhered to the outer end of fixed rod, the fixed rod is fixedly connected with left filter plate (2) and right filter plate (3).

3. A filter mechanism for a filter press for dewatering sludge according to claim 2, characterised in that, The table rod (13) is fixedly connected with movable table block (12), the through opening is arranged between the same vertical arrangement of boss (5), the same vertical arrangement of movable table block (12) is connected through a group of table rod (13).

4. A filter mechanism for a filter press for dewatering sludge according to claim 3, characterised in that, The fixed arc block (14) is arranged at the rear end outer surface of a group of table rod (13) at equal intervals, the movable arc block (16) is arranged at the front end outer surface of linkage rod (7) at equal intervals, the movable arc slot (17) is arranged adjacent to movable arc block (16), the movable arc slot (17) is embedded in the front end outer surface of linkage rod (7).

5. A filter mechanism for a filter press for dewatering sludge according to claim 4, characterised in that, The toothed rod (8) is fixed at the left end of linkage rod (7), the front end of toothed rod (8) is engagedly connected with linkage gear (10), the linkage gear (10) is fixedly connected with linkage rotating rod (11), the linkage gear (10) and toothed rod (8) are arranged in groups, the both ends of toothed rod (8) and linkage rod (7) are slid along the linkage slot (9) of both ends.

6. A filter mechanism for a filter press for dewatering sludge according to claim 5, characterised in that, The linkage rotating rod (11) is arranged in the middle of the linkage gear (10), and the lower end of the linkage rotating rod (11) is provided with a rotating rod motor.

7. A filter mechanism for filter press for dewatering sludge as claimed in claim 1 wherein, The filter cloth tensioning assembly is arranged to automatically tension the loosened filter cloth after long time use, and comprises linkage strips (25) arranged at both ends of the filter cloth body and connecting cloths (26). The outer ends of the connecting cloths (26) are wound with linkage rotating shafts (27), and displacement sensors (28) are arranged between the filter cloth and the left filter plate (2) and the filter cloth and the right filter plate (3).

8. A filter mechanism for a filter press for dewatering sludge according to claim 7, characterised in that, The linkage strips (25) are arranged in two groups on the left and right sides of the filter cloth body, and each group of linkage strips (25) is arranged in two strips on the front and back of the filter cloth body. The outer ends of the two linkage strips (25) are fixed with a group of connecting cloths (26), the outer ends of the connecting cloths (26) are fixedly connected with the linkage rotating shafts (27), the lower ends of the linkage rotating shafts (27) of the left and right groups are connected with each other through a rack and pinion, the linkage rotating shafts (27) are connected with linkage motors at the bottom ends, and the linkage motors are connected with the displacement sensors (28) through a controller signal.

9. A filter mechanism for filter press for dewatering sludge as claimed in claim 1 wherein, The gas-liquid flow assembly is arranged to discharge the filtrate and ventilate and dry the filter cloth, and comprises a filtrate discharge structure and a ventilation structure. The filtrate discharge structure comprises liquid outlet pipelines (18) arranged at the lower ends of the left filter plate (2) and the right filter plate (3) and a chamber (19) for filtrate flow. The ventilation structure comprises ventilation pipelines (20) arranged at the upper ends of the left filter plate (2) and the right filter plate (3) and an air flow distribution pipeline (21).

10. A filter mechanism for a filter press for dewatering sludge according to claim 9, characterised in that, The chamber (19) is arranged between the clamping of the left filter plate (2) and the right filter plate (3). The liquid outlet pipelines (18) are divided into a plurality of branch pipelines and a group of main pipelines. The plurality of branch pipelines are arranged at the lower ends of the left filter plate (2) and the right filter plate (3) at equal intervals. The group of main pipelines is connected with the plurality of branch pipelines. The ventilation pipelines (20) are divided into a plurality of branch ventilation pipelines and a group of main ventilation pipelines. The plurality of branch ventilation pipelines are transversely connected with the group of main ventilation pipelines. The air outlet ends of the plurality of branch ventilation pipelines are connected with the air flow distribution pipeline (21). The outer ends of the plurality of branch ventilation pipelines are provided with grooves. The inner ends of the grooves are threadedly connected with baffle plates.

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