Turbulence-reducing multi-stage filter structure of filter press and filter press

Abstract

According to the turbulent flow reducing multistage filter structure of the filter press and the filter press, water flow is guided through a flow guide ball and a flow guide plate, the water flow can flow along a flow guide channel more uniformly, turbulent flow and vortex of the water flow are reduced, the water flow is filtered through a plurality of filter screens, the silt content in the water flow can be reduced, and the filter efficiency is improved. And the water quality is improved. The invention relates to a drainage channel, which is characterized by consisting of a drainage channel, a water accumulation channel, a flow guide channel, a flow guide ball, a flow baffle plate, a flow guide plate, a filter screen, a drainage plate, a drainage hole, a cover plate, a sliding connection rib and a sliding connection groove, the drainage channel is divided into the water accumulation channel and the flow guide channel, and the water accumulation channel is a part, bent at an obtuse angle and arranged on the ground, of one end of the drainage channel; the flow guide channel is a part from one end of the water accumulation channel to the other end of the drainage channel, flow baffles are correspondingly arranged on the two sides of the flow guide channel respectively, and the flow baffles are bent towards the interior of the flow guide channel in an arc shape from the side connected with the flow guide channel to the other side.

Description

Technical Field

[0001] The present invention discloses a filter press turbulence reduction multi-stage filtering structure and a filter press, which relate to a structure and a filter press capable of reducing the mud content in a water flow, and belong to the technical field of sewage treatment, and particularly to a structure that guides a water flow through a guide ball and a guide plate, enables the water flow to flow more evenly along a guide channel, reduces the turbulence and eddy current of the water flow, filters the water flow through a plurality of filter screens, reduces the mud content in the water flow, and improves the water quality. Background Art

[0002] In sewage treatment, filter press is usually used to separate solid and liquid and dehydrate sewage to reduce the water content of sludge. Its working principle is that after the concentrated sludge is fully mixed with a certain concentration of flocculant in a static and dynamic mixer, the tiny solid particles in the sludge are aggregated into larger floccules, and free water is separated at the same time. The flocculated sludge is transported to the concentrated gravity dehydration filter belt. Under the action of gravity, the free water is separated to form stagnant sludge, which is then clamped between the upper and lower mesh belts. Under the action of extrusion pressure and shear force from small to large in the wedge-shaped pre-pressure area, low pressure area and high pressure area, the sludge is gradually squeezed to achieve the maximum separation of mud and water, and finally form a filter cake for discharge. However, the flocculant in the traditional filter press is added into the mixer through the dosing device. When the flocculant is added, it only exists in a certain position of the mixer and is added unevenly. Since the sewage continuously flows into the mixer at a certain flow rate, the sewage and the flocculant cannot fully contact each other before entering the next link, so that part of the sewage cannot be flocculated and flocculent clumps cannot be produced, resulting in low sewage treatment efficiency and poor treatment effect; and when the flocculated sludge moves with the filter belt, a lot of sludge will coagulate and remain on the filter belt, resulting in part of the sludge cannot enter the next link from the filter belt, and is squeezed into a mud cake. There is a lot of residual sludge on the filter belt, which is difficult to clean, affecting the dehydration effect of the filter belt, resulting in low sewage treatment efficiency and poor treatment effect.

[0003] Announcement No. CN107473563A discloses a belt filter press, which mainly includes a frame, a flocculation zone, a concentration and dehydration zone, a gravity dehydration zone and a pressing and dehydration zone, wherein the flocculation zone is provided with a flocculation agitator; the concentration and dehydration zone includes a plurality of horizontally arranged transmission rollers and a concentration filter belt arranged on the transmission rollers; the gravity dehydration zone is located below the concentration and dehydration zone, and the gravity dehydration zone includes a plurality of arc-shaped clamping rollers, an upper filter belt and a lower filter belt fixed on the frame and arranged obliquely; the pressing and dehydration zone includes a plurality of vertically staggered pressing rollers and pressing filter belts, and a demuding roller is also provided at the rear of the pressing roller, and a mud scraper is connected to the demuding roller. The flocculation zone of the above-mentioned filter press is equipped with a flocculation mixer, which can promote the full contact between sewage and flocculant and produce more floccules. However, when the flocculated sludge in the above-mentioned filter press moves with the upper filter belt and the lower filter belt, a lot of sludge will solidify and remain on the upper filter belt and the lower filter belt, resulting in part of the sludge being unable to enter the next link from the upper filter belt and the lower filter belt and being squeezed into mud cakes. There is a lot of residual sludge on the upper filter belt and the lower filter belt, which is difficult to clean, affecting the subsequent gravity dehydration effect, thereby resulting in low sewage treatment efficiency and poor treatment effect.

[0004] In order to improve the above problems, the applicant filed a Chinese invention patent application entitled "A filter press", in which the main driving pulley is driven to rotate by a third rotating motor, the main driving pulley drives the slave driving pulley to rotate, the slave driving pulley drives the third rotating rod to rotate, the third rotating rod drives the spiral blade to rotate, the spiral blade pushes the flocculated sludge from one end of the transmission pipe to the other end, and the water in the sludge enters the drainage channel from the mesh of the transmission filter belt under the action of gravity and the squeezing of the spiral blade, and is discharged from the drainage channel. However, in the above filter press, some smaller particles of flocculated sludge will enter the drainage channel from the mesh of the transmission filter belt, and the drainage channel does not further filter the water flow, but directly discharges the water from the drainage channel into the underground pipeline. The mud content in the water flow is high and the water quality is poor, which will cause surface water pollution and easily cause blockage of the underground pipeline. Summary of the invention

[0005] In order to improve the above situation, the present invention discloses a filter press with a multi-stage filtration structure for reducing turbulence and a filter press, which provides a filtering structure and a filter press for guiding water flow through guide balls and guide plates, so that the water flow can flow more evenly along the diversion channel, reduce the turbulence and eddy current of the water flow, and filter the water flow through multiple filter nets, thereby reducing the mud content in the water flow and improving the water quality.

[0006] The invention discloses a filter press with a multi-stage filtration structure for reducing turbulence and a filter press, which is realized as follows: The filter press with a multi-stage filtration structure for reducing turbulence comprises a drainage channel, a water accumulation channel, a flow guide channel, a flow guide ball, a baffle plate, a flow guide plate, a filter screen, a drainage plate, a drainage hole, a cover plate, a sliding rib and a sliding groove. The drainage channel is divided into a water accumulation channel and a diversion channel. The water accumulation channel is the part of the drainage channel that is bent at an obtuse angle at one end and placed on the ground, and the diversion channel is the part from one end of the water accumulation channel to the other end of the drainage channel. Baffles are disposed on both sides of the diversion channel, respectively. The baffles are curved from one side connected to the diversion channel to the other side into the diversion channel in an arc shape. The length of the baffles is equal to the length of the diversion channel. A plurality of guide balls are evenly arranged on the inner side of the guide channel, and the guide balls are staggeredly distributed. Preferably, the guide ball is a semicircular protrusion. Preferably, the guide ball is provided with a guide groove, there are a plurality of the guide grooves, the lengths of two adjacent guide grooves are different, and the plurality of guide grooves are equidistantly and staggeredly arranged along the surface of the guide ball. Preferably, the surface of the guide ball is provided with an anti-stick coating. A guide plate is disposed on the inner side of the baffle plate, and the length of the guide plate is equal to the length of the baffle plate. Preferably, there are a plurality of guide plates, and the plurality of guide plates are equidistantly arranged along the inner side surface of the baffle plate, and the angles between the plurality of guide plates and the baffle plate are different. Preferably, the guide plate is made of stainless steel. Preferably, the guide plate is a structure that is curved multiple times from one end to the other end. Preferably, the thickness of the guide plate gradually increases from one side where it is connected to the baffle plate to the other side. Preferably, the baffle plate is provided with a splicing groove, the guide plate is provided with a splicing block corresponding to the splicing groove, and the splicing groove is provided with a rubber pad. A filter screen is detachably disposed on the inner side surface of one end of the diversion channel, and the filter screen is an arc-shaped structure. The edge of the filter screen is connected to the edge of one end of the diversion channel, and the height of the filter screen is less than the depth of the diversion channel. Preferably, there are a plurality of filter screens, and the plurality of filter screens are arranged equidistantly along the length direction of one end of the diversion channel. Preferably, the density of the filter holes in the middle of the filter screen is greater than the density on both sides. Preferably, the diameter of the filter holes on the filter screen gradually decreases from a direction away from one end of the diversion channel to a direction close to one end of the diversion channel. Preferably, the filter holes on two adjacent filter screens are arranged in a staggered manner. Preferably, the filter hole is a pear-shaped hole with a coarse inlet and a fine outlet. The cover plate is an arc-shaped structure, the height of the cover plate gradually decreases from the center to the two sides, and the length of the cover plate is equal to the length of the water accumulation channel. The cover plate has sliding grooves on both sides. Sliding ribs corresponding to the sliding grooves are respectively provided on both sides of the water accumulation channel, and the cover plate and the water accumulation channel are connected by the sliding grooves and the sliding ribs. A drain plate is vertically arranged at the other end of the water accumulation channel. The drain plate is a circular structure. The edge of the drain plate is connected to the edge of the other end of the water accumulation channel and the edge of one end of the cover plate. The drain plate is provided with drain holes. Preferably, there are multiple groups of drainage holes, and the multiple groups of drainage holes are staggered along the height direction of the drainage board. There are multiple drainage holes in each group, and the multiple drainage holes are non-equidistantly arranged along the bottom circumference of the drainage board. Preferably, the density of the drainage holes near the bottom of the drainage board is greater than the density of the drainage holes far from the bottom of the drainage board. Preferably, the drainage hole is a pear-shaped hole with a wide inlet and a thin outlet. Preferably, the inner wall of the drainage hole is an uneven structure. Furthermore, an arc-shaped groove is formed on the inner side of the water accumulation channel; Preferably, there are a plurality of arc-shaped grooves, and the plurality of arc-shaped grooves are arranged equidistantly and staggered along the inner side surface of the water accumulation channel, and the depth of the plurality of arc-shaped grooves gradually decreases from one end to the other end of the water accumulation channel. Furthermore, the filter is replaced by a semicircular filter, the arcuate edge of the semicircular filter is detachably connected to the inner side surface of the diversion channel, and the height of the semicircular filter is equal to the depth of the diversion channel.

[0007] The present invention also relates to a filter press, which is composed of a flocculation component, a transmission component, a drainage component and a filter press component. The flocculation assembly is composed of a first support frame, a flocculation mixing cylinder, a first rotating motor, a dosing port, a sewage inlet, a first rotating rod, a second rotating rod, a stirring blade, a second rotating motor, a motor placement shell, a supporting base and a water outlet. The bottom surface of the flocculation mixing cylinder is placed on the top surface of the first support frame. A first rotating motor is disposed in the middle of the top surface of the flocculation mixing cylinder. The top surface of the flocculation mixing cylinder is provided with a drug addition port and a sewage inlet. The first rotating rod is placed in the flocculation mixing cylinder. One end of the first rotating rod is connected to the motor shaft of the first rotating motor through a through hole opened in the middle of the top surface of the flocculation mixing cylinder. The support base is placed in the middle of the inner bottom surface of the flocculation mixing cylinder. The motor housing is placed in the through groove on the top surface of the support base through the bearing. Preferably, the motor housing is a cylindrical structure. The other end of the first rotating rod is placed in the middle of the motor placement shell. The second rotating motor is placed on the inner bottom surface of the motor placement shell, Preferably, there are a plurality of the second rotating motors, and the plurality of the second rotating motors are arranged equidistantly along the circumferential direction of the bottom surface of the motor placement housing. One end of the second rotating rod passes through a through hole opened on the top surface of the motor placement shell and is connected to the motor shaft of the second rotating motor. The other end of the second rotating rod is placed on the bottom surface of the stirring blade. Preferably, the stirring blade is an arc-shaped structure. Preferably, the plurality of stirring blades are driven by the plurality of the second rotating motors to rotate in different directions. The bottom surface of the flocculation mixing cylinder is provided with a water outlet hole. The transmission assembly is composed of a second support frame, a third rotating motor, a main driving pulley, a slave driving pulley, a transmission belt, a transmission pipe, a sewage discharge channel, a transmission filter belt, a first mud conveying channel, a third rotating rod and a spiral blade. The transmission tube is a cylindrical structure with both ends closed. One end of the sewage discharge channel is placed on the bottom surface of the first support frame, and is connected to the water outlet through a through hole opened on the first support frame. The angle between the sewage discharge channel and the flocculation mixing cylinder is greater than 90 degrees. The sewage discharge channel is located above one end of the transmission pipe. The other end of the sewage discharge channel is vertically placed on the side of one end of the transmission pipe and is connected to the transmission pipe. The height of the transmission tube gradually increases from one end to the other end. The second support frame is located above the other end of the transmission tube, The second support frame is vertically placed on the side of the other end of the transmission tube. The third rotating motor is placed on the top surface of the second supporting frame, The axle of the main driving pulley is connected to the motor shaft of the third rotating motor, The slave drive pulley is located directly below the main drive pulley and outside the other end of the transmission tube. The main driving pulley and the slave driving pulley are connected via a transmission belt. One end of the third rotating rod is connected to the axle of the slave driving pulley. The other end of the third rotating rod passes through the middle of the other end of the transmission tube, a through hole is opened, and is placed in the middle of one end of the transmission tube through a bearing. The side of the third rotating rod is provided with a spiral blade. The edge of the spiral blade contacts the inner wall of the transmission pipe. The bottom of the side of the transmission pipe is formed by a transmission filter belt. The first mud conveying channel is located below the other end of the transmission pipe. One end of the first mud conveying channel is vertically placed on the side of the other end of the transmission pipe and is connected to the transmission pipe. The drainage assembly is composed of a support leg, a support plate and a drainage channel. One end of the support leg is placed on the side of the transmission pipe. Preferably, there are multiple groups of support legs, and the multiple groups of support legs are symmetrically placed on the side of the transmission tube. There are multiple support legs in each group, and the multiple support legs are equidistantly arranged along the axial direction of the transmission tube. The heights of the multiple support legs gradually increase along the axial direction of the transmission tube. Preferably, the other end of the supporting leg is a tripod structure. Preferably, a plurality of anti-slip protrusions are evenly arranged on the bottom surface of the supporting legs. A support plate is disposed between the inner sides of the two symmetrical support legs, and the top surface of the support plate is an arc-shaped structure. The drainage channel is located directly below the transmission filter belt. The drainage channel is an arc-shaped structure with an opening at the upper end. The length of the drainage channel is equal to the length of the transmission filter belt. Preferably, one end of the drainage channel extends to one end of the transmission filter belt and is bent at an obtuse angle and placed on the ground, and the other end of the drainage channel extends beyond the other end of the transmission filter belt. The drainage channel is placed on the support plate. The filter press assembly is composed of a filter press box, a second mud conveying channel, a drainage pipe, a mud collecting box, a main upper pressure roller, a secondary upper pressure roller, a main lower pressure roller, a secondary lower pressure roller, an upper filter belt and a lower filter belt. The filter press box is a square structure with an opening on the right side. One end of the second mud conveying channel is placed in the middle of one end of the top surface of the filter press box and is connected to the filter press box. The left side surface of the second mud conveying channel is flush with the left side surface of the filter press box. The other end of the first mud conveying channel is disposed at the other end of the second mud conveying channel and is communicated with the other end of the second mud conveying channel. The rear side of the filter press box is provided with a fourth rotating motor and a fifth rotating motor. A main upper pressure roller and a plurality of secondary upper pressure rollers are arranged on the upper end of the rear inner side surface of the filter press box. A main lower pressure roller and a plurality of secondary lower pressure rollers are arranged at the lower end of the rear inner side surface of the filter press box. One end of the main upper pressure roller is connected to the motor shaft of the fourth rotating motor through a through hole opened on the rear side of the filter press box. The other ends of the main upper pressure rollers are respectively placed on the front inner side of the filter press box through bearings. The two ends of the plurality of upper pressure rollers are respectively placed on the front and rear inner sides of the filter press box through bearings. The leftmost side of the upper pressure roller is close to the right side of the second mud conveying channel, One end of the main lower pressure roller is connected to the motor shaft of the fifth rotating motor through a through hole opened on the rear side of the filter press box. The other ends of the main lower pressure rollers are respectively placed on the front inner side of the filter press box through bearings. The two ends of the multiple lower pressure rollers are respectively placed on the front and rear inner sides of the filter press box through bearings. The leftmost side of the filter press box is close to the left inner side of the lower pressure roller. The main upper pressure roller and the plurality of the secondary upper pressure rollers are connected via an upper filter belt, and the main lower pressure roller and the plurality of the secondary lower pressure rollers are connected via a lower filter belt. The height of the upper filter belt gradually decreases along the direction of sludge transportation, and the height of the lower filter belt gradually increases along the direction of sludge transportation. Preferably, the width of the upper filter belt is equal to the width of the lower filter belt. One end of the drain pipe is placed at the bottom of the left side of the filter press box and is connected to the filter press box. The mud collecting box is a structure with an opening at the top. The mud collecting box is located outside the right side of the filter press box, and the width of the mud collecting box is greater than the width of the lower filter belt. Preferably, one side of the mud collecting box is an openable and closable structure. Furthermore, a plurality of flow-disturbing protrusions are evenly arranged on the stirring blade; Preferably, the spoiler protrusion is a semicircular structure; Furthermore, the sides of the main upper pressure roller, the secondary upper pressure roller, the main lower pressure roller and the secondary lower pressure roller are uniformly provided with a plurality of rubber teeth; Preferably, the rubber teeth are triangular prism structures with the edges facing outwards. Beneficial Effects

[0008] 1. By guiding the water flow through the guide balls and guide plates, the water flow can flow more evenly along the diversion channel and reduce the turbulence and eddy current of the water flow.

[0009] 2. Filtering the water flow through multiple filters can reduce the mud content in the water flow and improve the water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural diagram of a filter press of the present invention; Figure 2 It is a structural schematic diagram of a filter press of the present invention; Figure 3 This is a three-dimensional structural diagram of a filter press of the present invention, which only shows the internal structure of the flocculation mixing cylinder; Figure 4 It is a three-dimensional structural diagram of a filter press according to embodiment 2 of the present invention; Figure 5 This is a schematic structural diagram of a filter press according to Embodiment 3 of the present invention; Figure 6 A three-dimensional structural diagram of a turbulence reduction multi-stage filtering structure of a filter press according to the present invention; Figure 7 This is a three-dimensional structural diagram of a turbulence reduction multi-stage filtering structure of a filter press according to the present invention, in which only the internal structure of the filtering structure is shown; Figure 8 This is a three-dimensional structural diagram of a turbulence reduction multi-stage filtering structure of a filter press according to the present invention, in which only the structures of the sliding groove and the sliding ribs are shown; Fig. 9 It is a structural schematic diagram of a turbulence reduction multi-stage filtering structure of a filter press according to the present invention; Fig.10 It is a three-dimensional structural diagram of embodiment 2 of a turbulence reduction multi-stage filtering structure of a filter press according to the present invention; Fig.11 It is a three-dimensional structural diagram of Example 3 of a turbulence reduction multi-stage filtration structure of a filter press according to the present invention. Attached photos

[0011] The components include: a first support frame (1), a flocculation mixing drum (2), a first rotating motor (3), a dosing port (4), a sewage inlet (5), a transmission pipe (6), a third rotating motor (7), a main driving pulley (8), a transmission belt (9), a slave driving pulley (10), a first mud conveying channel (11), a second mud conveying channel (12), a filter press box (13), a main upper pressure roller (14), a main lower pressure roller (15), a mud collecting box (16), a second support frame (17), a supporting leg (18), a supporting plate (19), a drainage channel (20), a transmission filter belt (21), a sewage discharge channel (22), a first rotating rod (23), a second rotating rod (24), a stirring blade ( 25), a motor housing (26), a support base (27), a water outlet (28), a second rotating motor (29), a third rotating rod (30), a spiral blade (31), a drainage pipe (32), an upper filter belt (33), a lower filter belt (34), a lower pressure roller (35), an upper pressure roller (36), a spoiler protrusion (37), a rubber tooth (38), a diversion channel (39), a diversion ball (40), a baffle plate (41), a guide plate (42), a cover plate (43), a drainage plate (44), a drainage hole (45), a water accumulation channel (46), a filter screen (47), a sliding groove (48), a sliding rib (49), an arc groove (50), and a semicircular filter screen (51). DETAILED DESCRIPTION Example 1

[0012] The present invention discloses a filter press turbulence reduction multi-stage filtering structure, which comprises a drainage channel (20), a water accumulation channel (46), a flow guide channel (39), a flow guide ball (40), a baffle plate (41), a flow guide plate (42), a filter screen (47), a drainage plate (44), a drainage hole (45), a cover plate (43), a sliding rib (49) and a sliding groove (48). The drainage channel (20) is divided into a water accumulation channel (46) and a diversion channel (39), wherein the water accumulation channel (46) is a portion of the drainage channel (20) that is bent at an obtuse angle at one end and placed on the ground, and the diversion channel (39) is a portion from one end of the water accumulation channel (46) to the other end of the drainage channel (20). Baffle plates (41) are respectively disposed on both sides of the diversion channel (39); the baffle plates (41) are curved in an arc shape from one side connected to the diversion channel (39) to the other side toward the inside of the diversion channel (39); the length of the baffle plates (41) is equal to the length of the diversion channel (39). A plurality of guide balls (40) are evenly arranged on the inner side surface of the guide channel (39), and the guide balls (40) are staggeredly distributed. Preferably, the guide ball (40) is a semicircular protrusion. Preferably, the guide ball (40) is provided with a guide groove, there are a plurality of the guide grooves, two adjacent guide grooves have different lengths, and the plurality of guide grooves are arranged in an equidistant and staggered manner along the surface of the guide ball (40). Preferably, the surface of the guide ball (40) is provided with an anti-stick coating. A guide plate (42) is disposed on the inner side of the baffle plate (41); the length of the guide plate (42) is equal to the length of the baffle plate (41). Preferably, there are a plurality of guide plates (42), the plurality of guide plates (42) are equidistantly arranged along the inner side surface of the baffle plate (41) in the circumferential direction, and the angles between the plurality of guide plates (42) and the baffle plate (41) are different. Preferably, the guide plate (42) is made of stainless steel. Preferably, the guide plate (42) is a structure that is curved multiple times from one end to the other end. Preferably, the thickness of the guide plate (42) gradually increases from one side where it is connected to the baffle plate (41) to the other side. Preferably, the baffle plate (41) is provided with a splicing groove, the guide plate (42) is provided with a splicing block corresponding to the splicing groove, and a rubber pad is built into the splicing groove. A filter screen (47) is detachably disposed on the inner side surface of one end of the diversion channel (39); the filter screen (47) is an arc-shaped structure. The edge of the filter screen (47) is connected to the edge of one end of the diversion channel (39); the height of the filter screen (47) is less than the depth of the diversion channel (39); Preferably, there are a plurality of filter screens (47), and the plurality of filter screens (47) are arranged equidistantly along the length direction of one end of the diversion channel (39). Preferably, the density of the filter holes in the middle of the filter screen (47) is greater than the density on both sides. Preferably, the diameter of the filter holes on the filter screen (47) gradually decreases from a direction away from one end of the diversion channel (39) to a direction close to one end of the diversion channel (39). Preferably, the filter holes formed on two adjacent filter screens (47) are arranged in a staggered manner. Preferably, the filter hole is a pear-shaped hole with a coarse inlet and a fine outlet. The cover plate (43) is an arc-shaped structure, the height of the cover plate (43) gradually decreases from the center to both sides, and the length of the cover plate (43) is equal to the length of the water accumulation channel (46). The cover plate (43) is provided with sliding grooves (48) on both sides. Sliding ribs (49) corresponding to the sliding grooves (48) are respectively provided on both sides of the water accumulation channel (46); the cover plate (43) and the water accumulation channel (46) are engaged and connected via the sliding grooves (48) and the sliding ribs (49). A drainage plate (44) is vertically disposed at the other end of the water accumulation channel (46); the drainage plate (44) is a circular structure; an edge of the drainage plate (44) is connected to an edge of the other end of the water accumulation channel (46) and an edge of one end of the cover plate (43). The drainage plate (44) is provided with drainage holes (45). Preferably, the drainage holes (45) are provided in a plurality of groups, the plurality of groups of drainage holes (45) are arranged in a staggered manner along the height direction of the drainage plate (44), and each group has a plurality of drainage holes (45), and the plurality of drainage holes (45) are arranged at non-equidistant intervals along the circumference of the bottom of the drainage plate (44). Preferably, the density of the drainage holes (45) close to the bottom of the drainage board (44) is greater than the density of the drainage holes (45) far from the bottom of the drainage board (44). Preferably, the diameter of the drainage hole (45) is a pear-shaped hole with a wide inlet and a thin outlet. Preferably, the inner wall of the drainage hole (45) has an uneven structure. When in use, the diversion and filtering structure replaces the drainage channel (20) in the filter press, starts the third rotating motor (7), drives the main driving pulley (8) to rotate, the main driving pulley (8) drives the slave driving pulley (10) to rotate, the slave driving pulley (10) drives the third rotating rod (30) to rotate, the third rotating rod (30) drives the spiral blade (31) to rotate, the spiral blade (31) pushes the flocculated sludge to move from one end of the transmission pipe (6) to the other end, and the water in the sludge enters the diversion channel (39) in the drainage channel (20) from the mesh of the transmission filter belt (21) under the action of gravity and the squeezing of the spiral blade (31), is guided by the diversion ball (40) and the guide plate (42), and is filtered by multiple filter screens (47) before being discharged into the underground pipeline through the drainage hole (45), thereby reducing the mud content in the water flow and improving the water quality; Example 2

[0013] The difference between this embodiment and embodiment 1 is that: the inner side surface of the water accumulation channel (46) is provided with an arc-shaped groove (50), and there are a plurality of the arc-shaped grooves (50), and the plurality of the arc-shaped grooves (50) are arranged in an equidistant and staggered manner along the inner side surface of the water accumulation channel (46), and the depth of the plurality of the arc-shaped grooves (50) gradually decreases from one end to the other end of the water accumulation channel (46); when in use, the plurality of arc-shaped grooves (50) help to optimize the distribution and flow of water flow and reduce the generation of eddy currents, and the gradually decreasing groove depth can help to guide the water flow to be discharged smoothly to the drainage hole (45), reduce the accumulation and stagnation of water flow in the water accumulation channel (46), and at the same time, can also make the smaller sludge contained in the filtered water settle in the arc-shaped grooves (50) for further sedimentation and filtration, and the sludge content in the water flow is lower; Example 3

[0014] The difference between this embodiment and the first embodiment is that the filter screen (47) is replaced by a semicircular filter screen (51), the arcuate edge of the semicircular filter screen (51) is detachably connected to the inner side surface of the diversion channel (39), and the height of the semicircular filter screen (51) is equal to the depth of the diversion channel (39); when in use, the semicircular filter screen (51) can completely cover the entire water flow cross section, ensuring that all water flows through the filter screen (47) for filtering treatment, which can enhance the filtering effect, reduce the mud content in the water flow, and the detachable connection method makes it easier to clean and replace the filter screen (47); The guide ball (40) is designed as a semicircular protrusion, which can effectively disperse the water flow, reduce the resistance and splashing phenomenon when the water flows through, make the water flow flow more evenly along the guide channel (39), reduce the turbulence and eddy current of the water flow, and improve the guide effect; The guide ball (40) is provided with a guide groove, wherein there are a plurality of guide grooves, and the lengths of two adjacent guide grooves are different. The design of equidistantly staggered arrangement of the plurality of guide grooves along the surface of the guide ball (40) enables the water flow to be more evenly distributed, thereby preventing the water flow from concentrating on a certain area, more effectively guiding the water flow to flow smoothly through the guide ball (40), reducing the turbulence and eddy current of the water flow, improving the guide effect and reducing the resistance, and also effectively filtering out larger particles of sludge, thereby achieving a certain filtering effect; There are a plurality of guide plates (42), and the plurality of guide plates (42) are arranged equidistantly along the inner side surface of the baffle plate (41). The design of different angles between the plurality of guide plates (42) and the baffle plate (41) can achieve more uniform water flow diversion and avoid water flow gathering in a certain area. The guide plates (42) with different angles can reduce the resistance generated when water flows through, increase the stability of water flows when they pass through, and reduce water flow fluctuations. The guide plate (42) is made of stainless steel, which can reduce wear and damage caused by long-term water erosion and extend the service life of the guide plate (42); The guide plate (42) is designed to be curved multiple times from one end to the other end, which can increase the contact area between the guide plate (42) and the water flow, and achieve a better guide effect; The thickness of the guide plate (42) is designed to gradually increase from one side of the connection with the baffle plate (41) to the other side, which can reduce wear and damage caused by long-term erosion by water flow, extend the service life of the guide plate (42), more effectively guide water flow through the guide plate (42), reduce water flow turbulence and eddy currents, and improve the diversion effect; The baffle plate (41) is provided with a splicing groove, the guide plate (42) is provided with a splicing block corresponding to the splicing groove, and a rubber pad is built into the splicing groove, so that the guide plate (42) and the baffle plate (41) can be connected more tightly, thereby preventing the guide plate (42) from being loosened due to the impact of the water flow for a long time; There are a plurality of filter screens (47), and the plurality of filter screens (47) are arranged equidistantly along the length direction of one end of the diversion channel (39), and the filter holes opened on two adjacent filter screens (47) are arranged in a staggered manner, thereby reducing the risk of filter holes in the same direction on the plurality of filter screens (47) being blocked by sludge at the same time; and avoiding the phenomenon of uneven filtering caused by repeated flow of water at the same position, thereby achieving a better filtering effect; The pore size of the filter holes on the filter screen (47) gradually decreases from the direction away from one end of the diversion channel (39) to the direction close to one end of the diversion channel (39), and the filter holes are designed as pear-shaped holes with a coarse inlet and a fine outlet. The multiple filter screens (47) can filter sludge of different sizes layer by layer in the sewage, and can filter more sludge, with better filtering effect and lower mud content in the water; The density of the filter holes in the middle of the filter screen (47) is greater than the density at the two sides. The water flow in the middle of the filter screen (47) is greater. The filter holes with greater density can have a better filtering effect on the water flow in the middle, thereby reducing the blockage of the water flow. The density of the drainage holes (45) near the bottom of the drainage board (44) is greater than the density of the drainage holes (45) far from the bottom of the drainage board (44). Water flows along the water accumulation channel (46) into the drainage holes (45). The water flow near the bottom of the drainage board (44) is larger. The drainage holes (45) with a larger density can achieve a better drainage effect on the water flow at the bottom, thereby reducing the blockage of the water flow. The aperture of the drainage hole (45) is designed as a pear-shaped hole with a coarse inlet and a fine outlet, so that the water flow gradually shrinks from coarse to fine, increasing the water flow speed, reducing the pressure and splashing of the water flow when it passes through, and the drainage effect is more stable, which can improve the drainage efficiency and reduce the phenomenon of water accumulation, and can further filter the larger sludge in the water flow, so that the filtering effect is better and the risk of clogging is reduced; The inner wall of the drainage hole (45) is designed with an uneven structure, which can disturb the water flow, promote the flow of water, improve drainage efficiency, reduce water flow resistance, increase the surface area of ​​the inner wall of the drainage hole (45), and effectively prevent larger sludge from entering and being discharged through the drainage hole (45).

[0015] The purpose is to guide the water flow through the guide ball (40) and the guide plate (42), so that the water flow can flow more evenly along the guide channel (39), reduce the turbulence and eddy current of the water flow, and filter the water flow through the multiple filter screens (47), so as to reduce the mud content in the water flow and improve the water quality.

[0016] It should be noted that the filter press turbulence reduction multi-stage filtration structure is applicable to the following filter presses: The filter press of the present invention is composed of a flocculation component, a transmission component, a drainage component and a filter press component. The flocculation assembly is composed of a first support frame (1), a flocculation mixing cylinder (2), a first rotating motor (3), a drug addition port (4), a sewage inlet (5), a first rotating rod (23), a second rotating rod (24), a stirring blade (25), a second rotating motor (29), a motor placement shell (26), a supporting base (27), and a water outlet (28). The bottom surface of the flocculation mixing cylinder (2) is placed on the top surface of the first support frame (1). A first rotating motor (3) is disposed in the middle of the top surface of the flocculation mixing cylinder (2). The top surface of the flocculation mixing cylinder (2) is provided with a drug addition port (4) and a sewage inlet port (5). The first rotating rod (23) is placed in the flocculation mixing cylinder (2). One end of the first rotating rod (23) is connected to the motor shaft of the first rotating motor (3) through a through hole opened in the middle of the top surface of the flocculation mixing cylinder (2). The support base (27) is placed in the middle of the inner bottom surface of the flocculation mixing cylinder (2). The motor housing (26) is placed in a through groove opened on the top surface of the support base (27) via a bearing. Preferably, the motor housing shell (26) is a cylindrical structure. The other end of the first rotating rod (23) is placed in the middle of the motor placement shell (26). The second rotating motor (29) is placed on the inner bottom surface of the motor placement shell (26). Preferably, there are a plurality of the second rotating motors (29), and the plurality of the second rotating motors (29) are arranged equidistantly along the circumferential direction of the inner bottom surface of the motor placement shell (26). One end of the second rotating rod (24) passes through a through hole opened on the top surface of the motor placement shell (26) and is connected to the motor shaft of the second rotating motor (29) in a corresponding manner. The other end of the second rotating rod (24) is placed on the bottom surface of the stirring blade (25). Preferably, the stirring blade (25) is an arc-shaped structure. Preferably, the plurality of stirring blades (25) are driven by the plurality of second rotating motors (29) to rotate in different directions. The bottom surface of the flocculation mixing cylinder (2) is provided with a water outlet hole (28). The transmission assembly is composed of a second support frame (17), a third rotating motor (7), a main driving pulley (8), a slave driving pulley (10), a transmission belt (9), a transmission pipe (6), a sewage discharge channel (22), a transmission filter belt (21), a first mud conveying channel (11), a third rotating rod (30) and a spiral blade (31). The transmission tube (6) is a cylindrical structure with both ends closed. One end of the sewage discharge channel (22) is placed on the bottom surface of the first support frame (1), and is connected to the water outlet hole (28) through a through hole opened on the first support frame (1). The angle between the sewage discharge channel (22) and the flocculation mixing cylinder (2) is greater than 90 degrees. The sewage discharge channel (22) is located above one end of the transmission pipe (6). The other end of the sewage discharge channel (22) is vertically disposed on the side of one end of the transmission pipe (6) and is connected to the transmission pipe (6). The height of the transmission pipe (6) gradually increases from one end to the other end. The second support frame (17) is located above the other end of the transmission pipe (6). The second support frame (17) is vertically placed on the side of the other end of the transmission pipe (6). The third rotating motor (7) is placed on the top surface of the second supporting frame (17). The wheel shaft of the main driving pulley (8) is connected to the motor shaft of the third rotating motor (7). The slave drive pulley (10) is located directly below the master drive pulley (8) and outside the other end of the transmission tube (6). The main drive pulley (8) and the slave drive pulley (10) are connected via a transmission belt (9). One end of the third rotating rod (30) is connected to the axle of the secondary driving pulley (10). The other end of the third rotating rod (30) passes through a through hole in the middle of the other end of the transmission tube (6) and is placed in the middle of one end of the transmission tube (6) through a bearing. A spiral blade (31) is disposed on the side of the third rotating rod (30). The edge of the spiral blade (31) contacts the inner wall of the transmission pipe (6). The bottom of the side of the transmission pipe (6) is formed by a transmission filter belt (21). The first mud conveying channel (11) is located below the other end of the conveying pipe (6). One end of the first mud conveying channel (11) is vertically placed on the side of the other end of the transmission pipe (6) and is connected to the transmission pipe (6). The drainage assembly is composed of a support leg (18), a support plate (19) and a drainage channel (20). One end of the support leg (18) is placed on the side of the transmission pipe (6). Preferably, there are multiple groups of the support legs (18), and the multiple groups of the support legs (18) are symmetrically arranged on the side of the transmission tube (6). There are multiple support legs (18) in each group, and the multiple support legs (18) are arranged equidistantly along the axial direction of the transmission tube (6). The heights of the multiple support legs (18) gradually increase along the axial direction of the transmission tube (6). Preferably, the other end of the supporting leg (18) is a tripod structure. Preferably, a plurality of anti-slip protrusions are evenly arranged on the bottom surface of the supporting foot (18). A support plate (19) is disposed between the inner side surfaces of the two symmetrical support legs (18), and the top surface of the support plate (19) is an arc-shaped structure. The drainage channel (20) is located directly below the transmission filter belt (21); the drainage channel (20) is an arc-shaped structure with an opening at the upper end; the length of the drainage channel (20) is equal to the length of the transmission filter belt (21). Preferably, one end of the drainage channel (20) extends to one end of the transmission filter belt (21) and is bent at an obtuse angle and placed on the ground, and the other end of the drainage channel (20) extends beyond the other end of the transmission filter belt (21). The drainage channel (20) is placed on the support plate (19). The filter press assembly comprises a filter press box (13), a second mud conveying channel (12), a drainage pipe (32), a mud collecting box (16), a main upper pressure roller (14), a secondary upper pressure roller (36), a main lower pressure roller (15), a secondary lower pressure roller (35), an upper filter belt (33) and a lower filter belt (34). The filter press box (13) is a square structure with an opening on the right side. One end of the second mud conveying channel (12) is placed at the middle of one end of the top surface of the filter press box (13) and is connected to the filter press box (13). The left side surface of the second mud conveying channel (12) is flush with the left side surface of the filter press box (13). The other end of the first mud conveying channel (11) is placed at the other end of the second mud conveying channel (12), and is in communication with the other end of the second mud conveying channel (12). A fourth rotating motor and a fifth rotating motor are disposed on the rear side of the filter press box (13). A main upper pressure roller (14) and a plurality of secondary upper pressure rollers (36) are disposed on the upper end of the rear inner side surface of the filter press box (13). A main lower pressure roller (15) and a plurality of secondary lower pressure rollers (35) are disposed at the lower end of the rear inner side surface of the filter press box (13). One end of the main upper pressure roller (14) is connected to the motor shaft of the fourth rotating motor via a through hole opened on the rear side of the filter press box (13). The other ends of the main upper pressure rollers (14) are respectively placed on the front inner side of the filter press box (13) via bearings. The two ends of the plurality of upper pressure rollers (36) are respectively placed on the front and rear inner sides of the filter press box (13) via bearings. The leftmost side of the upper pressure roller (36) is close to the right side of the second mud conveying channel (12), One end of the main lower pressure roller (15) is connected to the motor shaft of the fifth rotating motor via a through hole opened on the rear side of the filter press box (13). The other ends of the main lower pressure rollers (15) are respectively placed on the front inner side of the filter press box (13) through bearings. The two ends of the plurality of lower pressure rollers (35) are respectively placed on the front and rear inner sides of the filter press box (13) through bearings. The leftmost side of the lower pressure roller (35) is close to the left inner side of the filter press box (13), The main upper pressure roller (14) and the plurality of the secondary upper pressure rollers (36) are connected via an upper filter belt (33), and the main lower pressure roller (15) and the plurality of the secondary lower pressure rollers (35) are connected via a lower filter belt (34). The height of the upper filter belt (33) gradually decreases along the direction of sludge transportation, and the height of the lower filter belt (34) gradually increases along the direction of sludge transportation. Preferably, the width of the upper filter belt (33) is equal to the width of the lower filter belt (34). One end of the drainage pipe (32) is placed at the bottom of the left side of the filter press box (13) and is connected to the filter press box (13). The mud collecting box (16) is a structure with an opening at the upper end. The mud collecting box (16) is located outside the right side of the filter press box (13), and the width of the mud collecting box (16) is greater than the width of the lower filter belt (34). Preferably, one side of the mud collecting box (16) is an openable and closable structure. When in use, sewage first enters the flocculation mixing drum (2) through the sewage inlet (5), and the flocculant is added to the flocculation mixing drum (2) through the drug addition port (4). The first rotating motor (3) and the second rotating motor (29) are started, and the first rotating motor (3) drives the first rotating rod (23) and the stirring blade (25) to rotate in the same direction, and the second rotating motor (29) drives the second rotating rod (24) and the corresponding single stirring blade (25) to rotate in different directions, so that the sewage entering the flocculation mixing drum (2) can be more fully contacted with the flocculant. The flocculated sludge is more; then the flocculated sludge enters the drainage channel (22) through the water outlet (28), enters the transmission pipe (6) through the drainage channel (22), starts the third rotating motor (7), the third rotating motor (7) drives the main driving pulley (8) to rotate, the main driving pulley (8) drives the slave driving pulley (10) to rotate, the slave driving pulley (10) drives the third rotating rod (30) to rotate, the third rotating rod (30) drives the spiral blade (31) to rotate, and the spiral blade (31) pushes the flocculated sludge from the transmission pipe (6) ) moves from one end to the other end, and water in the sludge enters the drainage channel (20) from the mesh of the transmission filter belt (21) under the action of gravity and the squeezing of the spiral blades (31), and is discharged from the drainage channel (20). Under the action of gravity, the sludge enters the first sludge conveying channel (11) from the other end of the transmission pipe (6), enters the second sludge conveying channel (12) from the first sludge conveying channel (11), and enters the filter press box (13) from the second sludge conveying channel (12); finally, the fourth rotary motor and the fifth rotary motor are started, and the main upper pressure roller (14) is driven by the fourth rotary motor ) and a plurality of upper pressure rollers (36) are rotated, and the main lower pressure roller (15) and the plurality of lower pressure rollers (35) are driven to rotate by a fifth rotating motor. The sludge that has undergone the initial dehydration treatment is squeezed between the upper and lower filter belts (34) to be dehydrated again. The water in the sludge is filtered by the upper and lower filter belts (34) and enters the bottom of the filter press box (13) and is discharged through the drain pipe (32). The sludge that has undergone the two dehydration treatments enters the sludge collecting box (16), which can reduce the water content of the sludge, thereby improving the sewage treatment efficiency and achieving a better sewage treatment effect. Example 2

[0017] The difference between this embodiment and embodiment 1 is that: a plurality of flow-disturbing protrusions (37) are evenly arranged on the stirring blade (25), and the flow-disturbing protrusions (37) are of a semicircular structure; when in use, the flow-disturbing protrusions (37) can further increase the contact area between the stirring blade (25) and the sewage and flocculant entering the flocculation mixing cylinder (2), thereby stirring the sewage and the flocculant, and enabling the sewage entering the flocculation mixing cylinder (2) to have more complete contact with the flocculant, resulting in more sludge after flocculation; Example 3

[0018] The difference between this embodiment and embodiment 1 is that: the side surfaces of the main upper pressure roller (14), the secondary upper pressure roller (36), the main lower pressure roller (15) and the secondary lower pressure roller (35) are evenly provided with a plurality of rubber teeth (38), and the rubber teeth (38) are triangular prism structures with the edges facing outwards; when in use, the rubber teeth (38) can further increase the squeezing force of the upper and lower pressure rollers on the upper and lower filter belts (34), so that the upper and lower filter belts (34) have a better dehydration effect on the sludge that has undergone the primary dehydration treatment, and the water content of the sludge is lower; The stirring blade (25) is designed with an arc-shaped structure, which can increase the contact area between the stirring blade (25) and the sewage and flocculant entering the flocculation mixing cylinder (2), and stir the sewage and flocculant, so that the sewage entering the flocculation mixing cylinder (2) can be more fully in contact with the flocculant, resulting in more sludge after flocculation; The plurality of stirring blades (25) are designed to rotate in different directions under the drive of the plurality of second rotating motors (29); the first rotating motor (3) drives the first rotating rod (23) and the stirring blade (25) to rotate in the same direction, and the second rotating motor (29) drives the second rotating rod (24) and the corresponding single stirring blade (25) to rotate in different directions, so that the sewage entering the flocculation mixing cylinder (2) can be more fully contacted with the flocculant, and more sludge can be flocculated; The height of the transmission pipe (6) is designed to gradually increase from one end to the other end. After the transmission filter belt (21) at the bottom of the transmission pipe (6) performs the first dehydration treatment on the flocculated sludge, the water in the sludge is discharged through the mesh of the transmission filter belt (21), thereby preventing the discharged water from flowing back into the sludge and affecting the dehydration effect of the sludge. The bottom surface of the support leg (18) is evenly provided with a plurality of anti-slip protrusions, which can increase the friction between the support leg (18) and the ground, so that the support leg (18) can better support the transmission pipe (6) and reduce shaking; The design that the height of the upper filter belt (33) gradually decreases along the direction of sludge transportation, and the height of the lower filter belt (34) gradually increases along the direction of sludge transportation, can make the distance between the upper filter belt (33) and the lower filter belt (34) smaller and smaller along the direction of sludge transportation, can increase the squeezing force between the upper filter belt (33) and the lower filter belt (34), and achieve a better dehydration effect on the sludge; One side of the mud collecting box (16) is designed as an openable and closable structure. When the dehydrated sludge enters the mud collecting box (16), it is easy to be squeezed into blocks under the action of gravity. The mud collecting box (16) with one side being an openable and closable structure is more convenient for directly transferring the sludge in the mud collecting box (16) and can prevent the sludge from accumulating at the bottom of the mud collecting box (16) to form stubborn sludge.

[0019] The flocculation component can be used to make the sewage and the flocculant fully contact, so that more sludge is produced after flocculation. The sludge is pushed and dehydrated for the first time through the transmission component, and the sludge is dehydrated again through the filter press component, so as to improve the efficiency and effect of sewage treatment.

[0020] After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other similar embodiments of the present invention. This application is intended to cover any modified uses or adaptive changes of the present invention. These modifications or uses, applicability changes follow the general principles of the present invention and include common knowledge or customary technical means in the technical field that are not disclosed in the present invention.

[0021] It should be noted that, for the sake of simplicity, the specific implementation mode of the present invention describes the data processing process of the controller as a series of action combinations. However, those skilled in the art should know that the present invention is not limited to the described actions, because according to the present invention, certain steps can be performed sequentially or simultaneously. Secondly, those skilled in the art should also know that the actions described and involved in the specification are not necessarily required by the present invention. The described contents are only preferred implementation cases of the present invention and cannot be considered to limit the scope of implementation of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation modes and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A filter press with a multi-stage filtration structure for reducing turbulence, characterized by: The utility model is composed of a drainage channel, a water accumulation channel, a diversion channel, a diversion ball, a baffle, a diversion plate, a filter screen, a drainage plate, a drainage hole, a cover plate, a sliding rib and a sliding groove. The drainage channel is divided into a water accumulation channel and a diversion channel. The water accumulation channel is the part of the drainage channel that is bent at an obtuse angle at one end and placed on the ground. The diversion channel is the part from one end of the water accumulation channel to the other end of the drainage channel. Baffles are respectively arranged on both sides of the diversion channel. A plurality of diversion balls are evenly arranged on the inner side of the diversion channel. A diversion plate is arranged on the inner side of the baffle. A filter screen is detachably provided on the inner side surface of one end of the cover plate, the cover plate is an arc-shaped structure, the height of the cover plate gradually decreases from the center to both sides, sliding grooves are respectively provided on both sides of the cover plate, sliding ribs corresponding to the sliding grooves are respectively provided on both sides of the water accumulation channel, the cover plate and the water accumulation channel are connected by the sliding grooves and the sliding ribs, a drain plate is vertically provided on the other end of the water accumulation channel, the drain plate is a circular structure, the edge of the drain plate is connected to the edge of the other end of the water accumulation channel and the edge of one end of the cover plate, and drainage holes are provided on the drain plate.

2. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The inner side of the water accumulation channel is provided with an arc groove; there are multiple arc grooves, and the multiple arc grooves are equidistantly arranged along the inner side of the water accumulation channel, and the depth of the multiple arc grooves gradually decreases from one end to the other end of the water accumulation channel.

3. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The filter screen is replaced by a semicircular filter screen, the arcuate edge of the semicircular filter screen is detachably connected to the inner side surface of the diversion channel, and the height of the semicircular filter screen is equal to the depth of the diversion channel.

4. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The baffle plate is curved in an arc shape from one side connected to the diversion channel to the other side toward the diversion channel, and the length of the baffle plate is equal to the length of the diversion channel.

5. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The plurality of guide balls are staggeredly distributed, and the guide balls are semicircular protrusions, which can effectively disperse the water flow, reduce the resistance and splashing phenomenon when the water flow passes through, make the water flow more evenly flow along the guide channel, reduce the turbulence and eddy current of the water flow, and improve the guide effect; the guide ball is provided with a guide groove, and there are a plurality of guide grooves, and the lengths of two adjacent guide grooves are different. The plurality of guide grooves are equidistantly staggered along the surface of the guide ball, which can make the water flow more evenly diverted, avoid the water flow from concentrating on a certain area, more effectively guide the water flow to flow smoothly through the guide ball, reduce the turbulence and eddy current phenomenon of the water flow, improve the guide effect and reduce the resistance, and can also effectively filter out larger particles of sludge, achieving a certain filtering effect; the surface of the guide ball is provided with an anti-stick coating.

6. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The length of the guide plate is equal to the length of the baffle plate. There are multiple guide plates, and the multiple guide plates are equidistantly arranged along the inner side surface of the baffle plate. The angles between the multiple guide plates and the baffle plate are different, which can achieve more uniform water flow diversion and avoid water flow gathering in a certain area. The guide plates with different angles can reduce the resistance generated when water flows through, increase the stability of water flows through, and reduce water flow fluctuations; the guide plate is made of stainless steel, and the guide plate is a structure with multiple arc bends from one end to the other end. The thickness of the guide plate gradually increases from one side of the connection with the baffle plate to the other side, which can reduce wear and damage caused by long-term erosion by water flow, extend the service life of the guide plate, more effectively guide water flow through the guide plate, reduce water turbulence and eddy currents, and improve the diversion effect.

7. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The baffle plate is provided with a splicing groove, the guide plate is provided with a splicing block corresponding to the splicing groove, and the splicing groove is provided with a rubber pad, which can make the guide plate and the baffle plate connected more tightly and prevent the connection between the guide plate and the baffle plate from loosening due to the long-term impact of the water flow.

8. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The filter screen is an arc-shaped structure, the edge of the filter screen is connected to the edge of one end of the diversion channel, the height of the filter screen is less than the depth of the diversion channel, there are multiple filter screens, and the multiple filter screens are equidistantly arranged along the length direction of one end of the diversion channel, which can reduce the risk of filter holes in the same direction of multiple filter screens being blocked by sludge at the same time; and can avoid the phenomenon of uneven filtration caused by repeated flow of water at the same position, and the filtering effect is better; the density of the filter holes opened in the middle of the filter screen is greater than the density on both sides, the aperture of the filter holes opened on the filter screen gradually decreases from the direction away from one end of the diversion channel to the direction close to one end of the diversion channel, and the filter holes opened on two adjacent filter screens are staggered. Multiple filter screens can filter sludge of different sizes of sewage layer by layer, can filter more sludge, have better filtering effect, and have a lower mud content in water; the filter hole is a pear-shaped hole with a coarse inlet and a fine outlet.

9. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that There are multiple groups of drainage holes, and the multiple groups of drainage holes are staggered along the height direction of the drainage board. There are multiple drainage holes in each group, and the multiple drainage holes are non-equidistantly arranged along the bottom circumference of the drainage board. The density of the drainage holes close to the bottom of the drainage board is greater than the density of the drainage holes far from the bottom of the drainage board. Water flows into the drainage holes along the water accumulation channel. The water flow close to the bottom of the drainage board is larger. The drainage holes with large density can have a better drainage effect on the water flow at the bottom and reduce the blockage of the water flow. The aperture of the drainage hole is a pear-shaped hole with a coarse inlet and a thin outlet. The inner wall of the drainage hole is an uneven structure, which can disturb the water flow, promote the flow of water, improve drainage efficiency, reduce water flow resistance, increase the surface area of ​​the inner wall of the drainage hole, and effectively prevent larger sludge from entering and being discharged through the drainage hole.

10. The filter press turbulence reduction multi-stage filtration structure according to claim 1, characterized in that The filter press is composed of a flocculation component, a transmission component, a drainage component and a filter press component. The flocculation component is composed of a first support frame, a flocculation mixing cylinder, a first rotating motor, a dosing port, a sewage inlet, a first rotating rod, a second rotating rod, a stirring blade, a second rotating motor, a motor placement shell, a support base and a water outlet. The bottom surface of the flocculation mixing cylinder is placed on the top surface of the first support frame, the first rotating motor is placed in the middle of the top surface of the flocculation mixing cylinder, the dosing port and the sewage inlet are opened on the top surface of the flocculation mixing cylinder, the first rotating rod is placed in the flocculation mixing cylinder, one end of the first rotating rod is connected to the motor shaft of the first rotating motor through a through hole opened in the middle of the top surface of the flocculation mixing cylinder, the support base is placed in the middle of the inner bottom surface of the flocculation mixing cylinder, and the motor is placed in the middle of the inner bottom surface of the flocculation mixing cylinder. The motor housing is placed in a through groove opened on the top surface of the support base through a bearing, the motor housing is a cylindrical structure, the other end of the first rotating rod is placed in the middle of the motor housing, the second rotating motor is placed on the inner bottom surface of the motor housing, there are multiple second rotating motors, and the multiple second rotating motors are arranged equidistantly along the circumferential direction of the inner bottom surface of the motor housing, one end of the second rotating rod passes through the through hole opened on the top surface of the motor housing and is connected to the motor shaft of the second rotating motor, the other end of the second rotating rod is placed on the bottom surface of the stirring blade, the stirring blade is an arc structure, and the multiple stirring blades rotate in different directions under the drive of the multiple second rotating motors, the bottom surface of the flocculation mixing cylinder is provided with a water outlet hole, and the transmission group The device is composed of a second support frame, a third rotating motor, a main driving pulley, a slave driving pulley, a transmission belt, a transmission pipe, a sewage channel, a transmission filter belt, a first mud conveying channel, a third rotating rod and a spiral blade. The transmission pipe is a cylindrical structure with two closed ends. One end of the sewage channel is placed on the bottom surface of the first support frame and is connected to the water outlet through a through hole opened on the first support frame. The angle between the sewage channel and the flocculation mixing cylinder is greater than 90 degrees. The sewage channel is located above one end of the transmission pipe. The other end of the sewage channel is vertically placed on the side of one end of the transmission pipe and is connected to the transmission pipe. The height of the transmission pipe gradually increases from one end to the other end. The second support frame is located above the other end of the transmission pipe. The second support frame The third rotating motor is placed vertically on the side of the other end of the transmission tube, the third rotating motor is placed on the top surface of the second supporting frame, the axle of the main driving pulley is connected to the motor shaft of the third rotating motor, the slave driving pulley is located directly below the main driving pulley and outside the other end of the transmission tube, the main driving pulley and the slave driving pulley are connected through a transmission belt, one end of the third rotating rod is connected to the axle of the slave driving pulley, the other end of the third rotating rod passes through the middle part of the other end of the transmission tube and is placed in the middle part of one end of the transmission tube through a bearing, a spiral blade is placed on the side of the third rotating rod, the edge of the spiral blade is in contact with the inner wall of the transmission tube, and the bottom of the side of the transmission tube is composed of a transmission filter belt.The first mud conveying channel is located below the other end of the transmission pipe, one end of the first mud conveying channel is vertically placed on the side of the other end of the transmission pipe and is communicated with the transmission pipe, the drainage assembly is composed of a supporting foot, a supporting plate and a drainage channel, one end of the supporting foot is placed on the side of the transmission pipe, there are multiple groups of supporting feet, multiple groups of supporting feet are symmetrically placed on the side of the transmission pipe, there are multiple supporting feet in each group, multiple supporting feet are equidistantly arranged along the axial direction of the transmission pipe, the height of multiple supporting feet gradually increases along the axial direction of the transmission pipe, the other end of the supporting foot is a tripod structure, the bottom surface of the supporting foot is evenly provided with multiple anti-slip protrusions, and the inner side surfaces of the two symmetrical supporting feet are respectively provided with corresponding A support plate, the top surface of the support plate is an arc-shaped structure, the drainage channel is located directly below the transmission filter belt, the drainage channel is an arc-shaped structure with an opening at the upper end, the length of the drainage channel is equal to the length of the transmission filter belt, one end of the drainage channel extends to one end of the transmission filter belt and is bent at an obtuse angle and placed on the ground, the other end of the drainage channel extends to the outside of the other end of the transmission filter belt, the drainage channel is placed on the support plate, the filter press assembly consists of a filter press box, a second mud conveying channel, a drainage pipe, a mud collecting box, a main upper pressure roller, a secondary upper pressure roller, a main lower pressure roller, a secondary lower pressure roller, an upper filter belt and a lower filter belt, the filter press box is a square structure with an opening on the right side, one end of the second mud conveying channel is placed in the middle of one end of the top surface of the filter press box, and is aligned with the filter press box. The filter press box is connected, the left side surface of the second mud delivery channel is flush with the left side surface of the filter press box, the other end of the first mud delivery channel is placed on the other end of the second mud delivery channel, and is connected to the other end of the second mud delivery channel, the rear side surface of the filter press box is provided with a fourth rotating motor and a fifth rotating motor, the upper end of the rear inner side surface of the filter press box is provided with a main upper pressure roller and a plurality of slave upper pressure rollers, the lower end of the rear inner side surface of the filter press box is provided with a main lower pressure roller and a plurality of slave lower pressure rollers, one end of the main upper pressure roller is correspondingly connected to the motor shaft of the fourth rotating motor through a through hole opened on the rear side surface of the filter press box, the other end of the main upper pressure roller is respectively placed on the front inner side surface of the filter press box through bearings, and the two ends of the plurality of slave upper pressure rollers are respectively passed through The bearings are placed on the front and rear inner sides of the filter press box, the leftmost slave pressure roller is close to the right side of the second sludge conveying channel, one end of the main lower pressure roller is connected to the motor shaft of the fifth rotating motor through the through hole opened on the rear side of the filter press box, the other end of the main lower pressure roller is placed on the front inner side of the filter press box through bearings, the two ends of multiple slave pressure rollers are placed on the front and rear inner sides of the filter press box through bearings, the leftmost slave pressure roller is close to the left inner side of the filter press box, the main upper pressure roller and multiple slave pressure rollers are connected through an upper filter belt, the main lower pressure roller and multiple slave pressure rollers are connected through a lower filter belt, and the height of the upper filter belt gradually decreases with the direction of sludge transportation.The height of the lower filter belt gradually increases with the direction of sludge transportation, the width of the upper filter belt is equal to the width of the lower filter belt, one end of the drain pipe is placed at the bottom of the left side of the filter press box and is connected to the filter press box, the mud collecting box is a structure with an upper end opening, the mud collecting box is located outside the right side of the filter press box, the width of the mud collecting box is greater than the width of the lower filter belt, and preferably, one side of the mud collecting box is an openable structure.

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