A slot-type filter device with a reciprocating grate member

Abstract

A slot type filtering device with reciprocating grid component, comprising: filtrate tank, slot type filter; filtrate tank is used for receiving filtrate filtered from slot type filter; slot type filter comprises: beginning end wall, bottom, side wall, back wall; beginning end wall, bottom are integrally formed with grid component; side wall comprises at least one group of side plates, which is formed by extending upward from left and right grid; when material enters the slot type filter, the reciprocating circular motion of the movable grid ensures the unobstructed of the filter gap, and the filtrate is discharged from the filter gap to the filtrate tank as much as possible. The present application has the advantages of multiple filtering channels, good filtering effect, simple structure, strong stability, and is suitable for various use occasions such as grating, sand setting, sludge pre-concentration, dehydration and re-filtering of filtrate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of solid-liquid separation equipment, and particularly relates to a groove type filter device with reciprocating grid members. BACKGROUND

[0002] Solid-liquid separation equipment is mainly applied in sewage treatment plants, chemical plants, laboratories, starch separation, slurry treatment and the like. According to the properties of the treated materials and the treatment purposes, the solid-liquid separation equipment is divided into sand separators, grating machines, thickening machines, dewatering machines and the like.

[0003] Different industries have different requirements for the equipment. The solid-liquid separation equipment involves a wide range of fields, and the selection of appropriate equipment will be more efficient. For example, slurry treatment, due to the large amount of treatment, high solid content, and large specific gravity of slurry solid residue, is easy to settle and separate, so the solid-liquid separation equipment such as sand separators and plate frame dewatering machines can be used. For the excess activated sludge in municipal sewage treatment plants, a multi-stage solid-liquid separation combined process can be used, first separating the sand and sludge with a large specific gravity and easy to settle using a sand separation device, then removing the large particles in the water body using a grating machine, and then adding chemicals for flocculation to the remaining suspended matter in the water body, and then using a thickening and dewatering machine for further pressurized filtration and dewatering.

[0004] A solid-liquid separation device disclosed in Japanese patents JP2005-118662A and JP2004-888A is mainly used for the concentration of flocculated sludge, and the filter channel is mainly a platform formed by reciprocating grid members. The filter channel is less, the filtration efficiency is poor, the effect is poor, and the material overflow problem when the feeding speed is greater than the filtration speed also needs to be considered. A pressurizing plate is used at the middle position above the platform, which is to further reduce the water content of the solid residue, but due to the unsuitability of the grid to push the material under resistance and the easy sticking of the material to the pressurizing plate, it causes an obstacle to the passage of the solid residue. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a groove type filter device with reciprocating grid members, which has good filtering effect.

[0006] The present application is implemented as follows:

[0007] A groove type filter device with reciprocating grid members, comprising: a filtrate groove and a groove type filter body.

[0008] The filtrate groove is used to receive the filtrate filtered from the groove type filter body.

[0009] The groove type filter body comprises a starting end wall, a bottom, a side wall and a back wall.

[0010] The initial end wall, the bottom are integrally formed with the grid component;

[0011] The grid component is formed by two or more groups of grid bars.

[0012] When the grid component is two groups, the grid bars in the same group are separated by a spacer, and the thickness of the spacer is greater than the thickness of the other group of grid bars, thereby forming a filter gap; at least one group of grid bars is a movable grid bar, which produces relative displacement with respect to the other group of grid bars, ensuring that each group of movable grid bars performs reciprocating circular motion; two or more stringing holes are provided on the front and rear balanced positions of each group of movable grid bars; each group of movable grid bars is connected into a movable body through a stringing rod inserted into the stringing hole; each movable body, through a driving device, guides and drives all the movable grid bars in the group to produce the same reciprocating circular motion.

[0013] The side wall includes at least one group of side plates, which are formed by extending upward from the left and right grid bars.

[0014] When the material enters the groove type filter body, the reciprocating circular motion of the movable grid bars ensures the smoothness of the filter gap, and the filtrate is discharged from the filter gap to the filtrate tank as much as possible.

[0015] Further, the initial end wall, the bottom, and the rear wall are integrally formed with the grid component.

[0016] The height of the rear wall is lower than the height of the initial end wall and the side wall.

[0017] When the material enters the groove type filter body, the filtrate is discharged from the filter gap to the filtrate tank, and the material with high solid content remaining in the groove type filter body is discharged through the upper edge of the rear wall.

[0018] Further, the length of the bottom is greater than the width of the side wall.

[0019] The rear wall is a flow limiting baffle, and the flow limiting baffle has a gap with the bottom.

[0020] The initial end wall, the side wall, and the flow limiting baffle form a groove, and the bottom extends out of the groove.

[0021] When the material enters the groove type filter body, the reciprocating circular motion of the movable grid bars ensures the smoothness of the filter gap, and the filtrate is discharged from the filter gap to the filtrate tank as much as possible, while the material with high solid content remaining in the groove type filter body passes through the gap and continues to transport towards the end of the bottom. Before reaching the end of the bottom, the material is further filtered, and the final material is discharged from the end of the bottom.

[0022] The movable grid bar makes a reciprocating circular motion upward, forward, downward, backward, and upward, where forward is in the opposite direction to the starting end wall and backward is in the direction of the starting end wall, ensuring that the material passes through the gap, and then continues to be filtered on the bottom and transported to the end of the bottom for discharge.

[0023] Furthermore, the sidewall includes two sets of side plates, which are formed by two sets of grid strips extending upward from the left and right sides;

[0024] At least one set of the side plates performs reciprocating circular motion under the drive of a corresponding set of the movable grid bars, and the two side plates located on the same side are close to each other and generate relative displacement;

[0025] Each of the side plates is provided with a filter channel, and the relative displacement of the side plates located close to each other on the same side keeps the filter channel unobstructed.

[0026] Furthermore, the driving device includes: a set of driving central shafts, a set of guide bars, and a set of driving mechanisms;

[0027] The set of drive center shafts includes at least two drive center shafts;

[0028] The set of guide bars includes at least two guide bars located at a left-right balanced position on the bar component; each guide bar is provided with at least two eccentric devices located at a front-back balanced position on the bar component; a drive center shaft passes through the corresponding eccentric devices on the left and right sides of the set of guide bars; each guide bar is provided with at least two fixing holes, which are aligned with the connecting holes on the movable bar; the fixing holes on the guide bars and the connecting holes on the movable bar are fixedly connected by the same connecting rod; the eccentricity direction of the eccentric devices on the guide bars connected to the same group of movable bars is consistent, and the eccentricity distance is consistent; the eccentricity direction of the eccentric devices on the guide bars connected to different groups of movable bars is opposite, and the eccentricity distance is consistent.

[0029] The set of drive mechanisms includes one drive motor and a transmission mechanism, or multiple drive motors; the set of drive mechanisms drives the set of drive center shafts to achieve the same direction of rotation and speed.

[0030] The set of drive mechanisms drives the set of drive center shafts to move synchronously, which in turn drives the guide bars sleeved on them to move. The guide bars drive the movable bars connected to them in the same set to perform reciprocating circular motion with the same trajectory.

[0031] Furthermore, the number of the current-limiting baffles is at least two;

[0032] At least two of the flow-limiting baffles are fixedly connected to the two sides of different sets of the side plates.

[0033] Furthermore, the bottom of each of the flow-limiting baffles is movably connected to a movable plate that tilts toward the interior of the trough-type filter body via multiple hinges;

[0034] When the movable plate moves to its lowest point, it approaches another set of grates when it is at its highest point.

[0035] Furthermore, a crushing device is provided above the grid bar between the flow-limiting baffle and the bottom end;

[0036] The rolling device performs reciprocating circular motion under the drive of a rolling drive device.

[0037] Furthermore, the compaction drive device includes: a set of compaction drive central shafts, at least one compaction guide plate, and at least two gear steering devices;

[0038] The set of rolling drive center shafts includes at least two rolling drive center shafts; the set of rolling drive center shafts is fixed by at least one fixing device;

[0039] The rolling guide plate is provided with at least two eccentric mechanisms, and a rolling drive center shaft passes through each eccentric mechanism;

[0040] The first output end of each gear steering unit passes through the rolling drive center shaft, and its second output end passes through the drive center shaft;

[0041] The drive center shaft drives the rolling drive center shaft to rotate through the gear steering gear, and the rolling drive center shaft drives the rolling guide plate to move through the first eccentric device, so that the rolling guide plate drives the rolling device to perform rolling action on the material.

[0042] A filter device with reciprocating motion grid members includes: a filter platform composed of grid members, and a compaction device disposed above the filter platform; the grid members are formed by two or more sets of grids laid alternately; each adjacent grid member in the same set is separated by a spacer, the thickness of the spacer being greater than the thickness of the other set of grids, thereby forming filter gaps; wherein, at least one set of grids is a movable grid, which generates relative displacement relative to the other set of grids, ensuring that each set of movable grids performs reciprocating circular motion; each set of movable grids has two or more connecting holes at balanced positions; each set of movable grids is connected into a movable body by connecting rods passing through the connecting holes; each movable body is guided and driven by a driving device to produce reciprocating circular motion with the same trajectory for all the movable grids in the set; the compaction device performs reciprocating circular motion under the drive of a compaction driving device to compact the material on the filter platform.

[0043] The advantages of this invention are:

[0044] It has multiple filtration channels and excellent filtration effect.

[0045] The bottom slag discharge method has a simple structure and strong stability.

[0046] Low power consumption.

[0047] It is suitable for various applications such as bar screens, sedimentation, sludge pre-concentration, dewatering, and filtrate re-filtration.

[0048] Due to its wide range of applications and outstanding performance, it can improve the filtration efficiency and effect of each processing stage, and is more suitable for use in mobile integrated equipment. Attached Figure Description

[0049] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0050] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention.

[0051] Figure 2 This is a top view of the overall structure of the first embodiment of the present invention.

[0052] Figure 3 This is an exploded view of the overall structure of the first embodiment of the present invention.

[0053] Figure 4 This is a schematic diagram of the structure of the trough-type filter body in the first embodiment of the present invention.

[0054] Figure 5 This is an exploded structural diagram of the trough-type filter body in the first embodiment of the present invention.

[0055] Figure 6 This is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0056] Figure 7 This is a top view of the overall structure of the second embodiment of the present invention.

[0057] Figure 8 This is an exploded view of the overall structure of the second embodiment of the present invention.

[0058] Figure 9 This is a schematic diagram of the structure of the trough-type filter body (with the rear wall removed) in the second embodiment of the present invention.

[0059] Figure 10 This is an exploded view of the structure of the trough-type filter body (with the rear wall removed) in the second embodiment of the present invention.

[0060] Figure 11 This is a schematic diagram showing the positional relationship between the drive center shaft and the rolling drive center shaft in the second embodiment of the present invention. Detailed Implementation

[0061] First embodiment:

[0062] The filtration device in this embodiment is suitable for materials with high fluidity, such as pre-concentration between the flocculation mixing process and the dewatering process.

[0063] like Figures 1 to 5 As shown, a trough-type filtration device with a reciprocating motion grid member includes: a filtrate tank 1 and a trough-type filter body 2 disposed in the filtrate tank 1.

[0064] The tank-type filter body 2 includes: a starting wall 21, a bottom 22, a side wall 23, and a rear wall 24.

[0065] The starting wall 21, bottom 22, and rear wall 24 are integrally formed grid components.

[0066] The grid structure is composed of two sets of grid bars, A31 and B31, laid alternately. Each adjacent grid bar in the same set is separated by a spacer 32, the thickness of which is greater than the thickness of the other set of grid bars, thus forming a filter gap. Both sets of grid bars A and B are movable, and relative displacement occurs between them during movement, ensuring that each set of movable grid bars performs a reciprocating circular motion. Each set of movable grid bars has three connecting holes 33 at balanced positions; each set of movable grid bars is connected into a movable body through connecting rods 34 passing through the connecting holes 33; each movable body, through a driving device, guides and drives all the movable grid bars in that set to produce a reciprocating circular motion with the same trajectory.

[0067] The drive unit includes: a set of drive center shafts, a set of guide bars, and a set of drive mechanisms;

[0068] The set of drive center shafts includes two drive center shafts 41.

[0069] The set of guide bars includes four guide bars 42, located at a left-right balanced position on the bar component. Two guide bars A42 at the left-right balanced position are fixedly connected to a group of movable bars A31, and the other two guide bars B42 at the left-right balanced position are fixedly connected to a group of movable bars B31. Two eccentric devices A43 are provided on each of the two guide bars A42, located at a front-back balanced position on the bar component; two eccentric devices B43 are also provided on each of the two guide bars B42, located at a front-back balanced position on the bar component; a drive center shaft 41 passes through the corresponding left-right eccentric device 43 on each guide bar 42. (In this invention, "front" refers to the direction opposite to the starting wall 21, "back" refers to the direction of the starting wall 21, and "left-right" refers to the direction perpendicular to "front-back".)

[0070] Each guide bar 42 is provided with three fixing holes 421, which are in the same position as the connecting holes 33 on the movable bars in the same group; the fixing holes 421 on each guide bar 42 and the connecting holes 33 on the movable bars in the same group are fixedly connected in series by the same connecting rod 34.

[0071] Each eccentric device A43 connected to the movable grid bar of group A has the same eccentric direction and the same eccentric axis distance; each eccentric device B43 connected to the movable grid bar of group B has the same eccentric direction and the same eccentric axis distance; the eccentric directions of eccentric device A43 and eccentric device B43 are opposite, but the eccentric axis distances are the same.

[0072] A set of drive mechanisms includes a drive motor 51 and a gear transmission mechanism 52; the drive motor 51 drives a set of drive center shafts 41 through the gear transmission mechanism 52 to achieve the same direction and speed. The gear transmission mechanism 52 can also be replaced by other transmission mechanisms, such as a sprocket transmission mechanism, a rectangular frame transmission mechanism (see the second embodiment for details), etc.

[0073] The gear transmission mechanism 52 in this embodiment has three sequentially meshing gears, one of which is the driving gear and the other two are driven gears. The driving gear is driven by the drive motor 51. The two non-adjacent gears on both sides are the gears that drive the drive central shaft, and the two gears that drive the drive central shaft have completely identical shapes.

[0074] In practice, a set of drive mechanisms can also consist of multiple drive motors, each of which drives a drive center shaft.

[0075] A set of drive mechanisms drives a set of drive center shafts 41 to move synchronously, which in turn drives the guide bars 42 sleeved on them to move. The guide bars 42 drive the movable bars in the same group connected to them to perform reciprocating circular motion with the same motion trajectory. Since the eccentric devices A43 and B43 have opposite eccentric directions and the same eccentric axis distance, the two sets of movable bars A and B generate relative displacement and perform staggered motion.

[0076] In this embodiment, the two outermost A-group movable grid bars A31 extend upward to form side plates A231, and the two B-group movable grid bars B31 adjacent to the two A-group movable grid bars A31 extend upward to form side plates B231. The two inner side plates B231 are provided with multiple horizontal filter channels B232, and the two outer side plates A231 are provided with multiple vertical filter channels A232. The two side plates B231 and the two side plates A231 form the two side walls 23 of the trough-type filter body 2. When the two side plates B231 and the two side plates A231 move alternately, the two side walls 23 not only have a filtering function but also a mutual scraping function, keeping the filter channels on the two side walls 23 unobstructed.

[0077] The height of the rear wall 24 is lower than that of the starting wall 21 and the side wall 23, and it bends outward to become a channel for material overflow.

[0078] The filtration device in this embodiment is suitable for fluid materials. Therefore, the tank-type filter body 2 is also equipped with a stirring device 5 to stir the material.

[0079] In this embodiment, both the filtrate tank 1 and the tank-type filter body 2 are equipped with level gauges 9 to control the feeding and discharge of filtrate.

[0080] Additionally, it's worth mentioning that in large equipment, the length of the movable grid bar 31 is relatively long, so it's feasible for each movable grid bar 31 to be made up of multiple fixed segments spliced ​​together. The same method applies to the guide grid bar 42.

[0081] Work process:

[0082] After the material enters the tank-type filter body 2, the reciprocating circular motion of the two sets of movable grid bars A and B ensures that the filter gaps are unobstructed, allowing the filtrate to be discharged from the filter gaps into the filtrate tank 1 as much as possible, while the remaining material overflows outward from the upper edge of the rear wall 24.

[0083] Second embodiment:

[0084] This embodiment is applicable to materials with strong settling properties, such as sand removal and slag removal processes.

[0085] like Figures 6 to 10As shown, a trough-type filtration device with a reciprocating motion grid member includes: a filtrate tank 1 and a trough-type filter body 2 disposed in the filtrate tank 1.

[0086] The tank-type filter body 2 includes: a starting wall 21, a bottom 22, a side wall 23, and a rear wall.

[0087] Unlike the first embodiment, the starting wall 21 and the bottom 22 are integrally formed grid components. The length of the bottom 22 is greater than the width of the side wall 23. The rear wall is a flow-limiting baffle 25, and there is a gap 3 between the flow-limiting baffle 25 and the bottom 22; the starting wall 21, the side wall 23, and the flow-limiting baffle 25 form a groove, and the bottom 22 extends out of the groove.

[0088] The structure of the grid bar components, driving device, and sidewalls in this embodiment are the same as those in the first embodiment, and will not be described again here.

[0089] It should be noted that in this example, the two sets of movable grid bars A and B perform reciprocating circular motions upward, forward, downward, backward, and upward. The forward motion points in the opposite direction to the starting wall 21, while the backward motion points in the direction of the starting wall 21, ensuring that the material is discharged from the gap 3 and then continues to be transported on the bottom 22 for further filtration before being discharged at the end of the bottom 22.

[0090] When the material enters the tank-type filter body 2, the reciprocating circular motion of the two sets of movable grid bars ensures that the filter gaps are unobstructed, allowing the filtrate to be discharged from the filter gaps into the filtrate tank 1 as much as possible. The material with a high solid content remaining in the tank-type filter body 2 is discharged from the gaps 3 and then continues to be transported on the bottom 22 to the end of the bottom 22 for discharge.

[0091] There are two flow-limiting baffles 25, and each flow-limiting baffle 25 is fixedly connected to different sets of side plates 231 on both sides. Therefore, the two flow-limiting baffles 25 have relative displacement and move in an alternating manner. This ensures that the solid slag is conveyed smoothly while limiting the flow to the maximum extent.

[0092] Each flow-limiting baffle 25 is movably connected at its bottom to a movable plate 27 that slopes inward toward the interior of the tank-type filter body 2 via a hinge 26. When each movable plate 27 reaches its lowest point, it approaches another set of grid bars when they reach their highest point. Since the flow-limiting baffle 25 and the movable plate 27 are connected by the hinge 26, and the maximum angle of the hinge 26 is less than 180 degrees, the movable plate 27 is in a state of inclination toward the tank, which serves to better limit the flow while allowing solids of appropriate size to pass through. When solids touch the movable plate 27, the hinge 26 will push the movable plate 27 upward to prevent hard contact and damage between the movable grid bars and the flow-limiting baffle 25.

[0093] When the material passes through the gap 3 from inside the tank to outside the tank, it still needs to run to the end of the bottom 22 before it can be discharged, and the water in the solid slag is further discharged through the filter gap formed by the movable grid bars.

[0094] In this embodiment, a compaction device 6 is also provided above the grid bars between the flow-limiting baffle 25 and the bottom 22, further drying the solid slag. This compaction device 6 is driven by a compaction drive device to perform a reciprocating motion at a 90° angle to the material's propulsion direction, thereby compacting the material on the platform. (In practice, the movement direction of the compaction device 6 can also be the same as the material's propulsion direction, or at a certain angle.)

[0095] The compaction drive device includes: a set of compaction drive center shafts 71, two compaction guide plates 72, and a set of compaction device drive mechanisms 73;

[0096] A set of rolling drive center shafts 71, including two rolling drive center shafts 71; the set of rolling drive center shafts 71 is fixed by a fixing device 8; the fixing device 8 is fixed on the tank wall of the filtrate tank 1.

[0097] The rolling guide plate 72 is provided with at least two eccentric mechanisms 722, and a rolling drive center shaft 71 is inserted in each eccentric mechanism 722.

[0098] A set of rolling device drive mechanism 73 includes four gear steering gears 731, with the first output end of the gear steering gear 731 passing through the rolling drive center shaft 71 and the second output end passing through the drive center shaft 41.

[0099] The rolling drive center shaft 71 is at 90° to the drive center shaft 41.

[0100] The drive center shaft 41 drives the rolling drive center shaft 71 to rotate through the gear steering gear 731. The rolling drive center shaft 71 drives the rolling guide plate 72 to move through the eccentric mechanism 722. The movement direction of the rolling guide plate 72 is 90° with the movement direction of the platform. A rolling module 721 is fixedly connected to the two rolling guide plates 72. The rolling module 721 performs rolling action on the material on the platform under the drive of the rolling guide plates 72.

[0101] In practice, the compaction guide plate 72 can be set in multiple groups, and multiple compaction modules 721 can be set at intervals on each group of compaction guide plates.

[0102] In this embodiment, the power of the two rolling drive shafts 71 is transmitted by the two drive shafts 41 through four gear steering mechanisms 731. In practice, the power of the two rolling drive shafts 71 can also be driven by two additional independent motors, or by one independent motor in conjunction with a transmission mechanism.

[0103] In this embodiment, the two drive shafts 41 and the two rolling drive shafts 71 form a rectangular frame. The drive between these four components is achieved entirely through a gear steering mechanism 731 of the same specification, eliminating the need for other transmission mechanisms or independent motors. Figure 11 As shown. It should be noted that if the compaction device 6 is not installed, the compaction drive center shaft 71 is not used to drive the compaction device 6. The rectangular frame can also be used as a transmission mechanism (which can be called a "rectangular frame transmission mechanism") to drive the drive center shaft 41, so that the two drive center shafts 41 in the same group have the same speed and direction.

[0104] In this embodiment, both the filtrate tank 1 and the tank-type filter body 2 are equipped with level gauges 9 to control the feeding and discharge of filtrate.

[0105] Work process:

[0106] When the material enters the tank-type filter body 2, the reciprocating circular motion of the two sets of movable grid bars 31 ensures that the filter gaps are unobstructed, allowing the filtrate to be discharged from the filter gaps into the filtrate tank 1 as much as possible. The material with a high solid content remaining in the tank-type filter body 2 is discharged from the gaps 3, and then continues to be transported on the bottom 22 and crushed and filtered by the crushing device 6 until it reaches the end of the bottom 22 and is discharged.

[0107] Third embodiment:

[0108] The portion located outside the tank in the second embodiment described above can also serve as a separate filtration device, i.e., a filtration device with reciprocating grid members, comprising: a filtration platform composed of grid members, and a crushing device disposed above the filtration platform. In this embodiment, the filtration platform is the bottom 22 in the second embodiment. The material on the filtration platform is crushed by the movement of the crushing device, and the filtrate flows out from the gaps in the grid members, thus achieving the filtration function.

[0109] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A trough-type filter device with reciprocating grid members, characterized in that: include: Filtration tank, tank-type filter body; The tank-type filter body is disposed inside the filtrate tank; The filtrate tank is used to receive the filtrate filtered from the tank-type filter body; The trough-type filter body includes: a starting wall, a bottom, two side walls, and a rear wall; The starting wall and the bottom are integrally formed of grid components; The grid component is made up of two or more sets of grids laid in alternating layers; When the grid members are in two sets, each adjacent grid member in the same set is separated by a spacer, the thickness of which is greater than the thickness of the other set of grid members, thus forming a filter gap; wherein, at least one set of grid members is a movable grid member, which generates relative displacement relative to the other set of grid members, ensuring that each set of movable grid members performs reciprocating circular motion; each set of movable grid members has two or more connecting holes at the front and rear balanced positions; each set of movable grid members is connected into a movable body through connecting rods passing through the connecting holes; each movable body is guided and driven by a driving device to produce reciprocating circular motion with the same trajectory for all the movable grid members in that set; Each of the sidewalls includes: a first side plate located on the inner side and a second side plate located on the outer side; the first side plate located on the inner side is provided with a plurality of transverse filtering channels, and the second side plate located on the outer side is provided with a plurality of vertical filtering channels; when the first side plate and the second side plate move alternately, the sidewalls not only have a filtering function, but also a mutual scraping function. When the material enters the tank-type filter body, the reciprocating circular motion of the movable grid bars ensures that the filter gaps are unobstructed, allowing the filtrate to be discharged from the filter gaps into the filtrate tank as much as possible. The drive device includes: a set of drive center shafts, a set of guide bars, and a set of drive mechanisms; The set of drive center shafts includes at least two drive center shafts; The set of guide bars includes at least two guide bars located at a left-right balanced position on the bar component; each guide bar is provided with at least two eccentric devices located at a front-back balanced position on the bar component; a drive center shaft passes through the corresponding eccentric devices on the left and right sides of the set of guide bars; each guide bar is provided with at least two fixing holes, which are aligned with the connecting holes on the movable bar; the fixing holes on the guide bars and the connecting holes on the movable bar are fixedly connected by the same connecting rod; the eccentricity direction and eccentricity distance of the eccentric devices on the guide bars connected to the same set of movable bars are consistent. The set of drive mechanisms includes one drive motor and a transmission mechanism, or multiple drive motors; the set of drive mechanisms drives the set of drive center shafts to achieve the same direction of rotation and speed. The set of drive mechanisms drives the set of drive center shafts to move synchronously, which in turn drives the guide bars sleeved on them to move. The guide bars drive the movable bars connected to them in the same set to perform reciprocating circular motion with the same trajectory.

2. The trough-type filter device with reciprocating grid members as described in claim 1, characterized in that: The starting wall, bottom, and rear wall are integrally formed from grid components; The height of the rear wall is lower than the height of the starting wall and the side wall; When the material enters the tank-type filter body, the filtrate is discharged from the filter slots into the filtrate tank, while the material with a higher solid content remaining in the tank-type filter body overflows and is discharged through the upper edge of the rear wall.

3. The trough-type filter device with reciprocating motion grid members as described in claim 1, characterized in that: The length of the bottom is greater than the width of the sidewall; The rear wall is a flow-limiting baffle, and there is a gap between the flow-limiting baffle and the bottom. The starting wall, the side wall, and the flow-limiting baffle form a groove, and the bottom extends beyond the groove. When the material enters the tank-type filter body, the reciprocating circular motion of the movable grid bars ensures that the filter gaps are unobstructed, allowing the filtrate to be discharged from the filter gaps into the filtrate tank as much as possible. Meanwhile, the material with a higher solid content remaining in the tank-type filter body passes through the gaps and continues to be transported towards the bottom end. Before reaching the bottom end, the material undergoes further filtration, and the final material is discharged from the bottom end. The movable grid bar makes a reciprocating circular motion upward, forward, downward, backward, and upward, where forward is in the opposite direction to the starting end wall and backward is in the direction of the starting end wall, ensuring that the material passes through the gap, and then continues to be filtered on the bottom and transported to the end of the bottom for discharge.

4. A trough-type filter device with reciprocating grid members as described in claim 1, characterized in that: The sidewall includes two sets of side plates, which are formed by two sets of grids extending upward from the left and right sides; At least one set of the side plates performs reciprocating circular motion under the drive of a corresponding set of the movable grid bars, and the two side plates located on the same side are close to each other and generate relative displacement; Each of the side plates is provided with a filter channel, and the relative displacement of the side plates located close to each other on the same side keeps the filter channel unobstructed.

5. A trough-type filter device with a reciprocating motion grid bar component as described in claim 3, characterized in that: The number of the current-limiting baffles is at least two; At least two of the flow-limiting baffles are fixedly connected to the two sides of different sets of the side plates.

6. A trough-type filter device with a reciprocating motion grid bar member as described in claim 5, characterized in that: The bottom of each flow-limiting baffle is movably connected to a movable plate that tilts inward toward the interior of the trough-type filter body via multiple hinges. When the movable plate moves to its lowest point, it approaches another set of grates when it is at its highest point.

7. A trough-type filter device with reciprocating motion grid members as described in claim 3, characterized in that: A crushing device is also provided above the grid between the flow-limiting baffle and the bottom end; The rolling device performs reciprocating circular motion under the drive of a rolling drive device.

8. A trough-type filter device with a reciprocating motion grid bar member as described in claim 7, characterized in that: The rolling drive device includes: a set of rolling drive central shafts, at least one rolling guide plate, and at least two gear steering devices; The set of rolling drive center shafts includes at least two rolling drive center shafts; the set of rolling drive center shafts is fixed by at least one fixing device; The rolling guide plate is provided with at least two eccentric mechanisms, and a rolling drive center shaft passes through each eccentric mechanism; The first output end of each gear steering unit passes through the rolling drive center shaft, and its second output end passes through the drive center shaft; The drive center shaft drives the rolling drive center shaft to rotate through the gear steering gear, and the rolling drive center shaft drives the rolling guide plate to move through the eccentric mechanism, so that the rolling guide plate drives the rolling device to perform rolling action on the material.

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