CN212504530U

CN212504530U - Sludge dewatering filter equipment

Info

Publication number: CN212504530U
Application number: CN202021105277.8U
Authority: CN
Inventors: 黄孟
Original assignee: Shenzhen Linfeng Environmental Protection Co ltd
Current assignee: Shenzhen Linfeng Environmental Protection Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-09
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a technical field of sludge dewatering handles especially relates to a sludge dewatering filter equipment, which comprises a housing, first squeeze roll and second squeeze roll, first squeeze roll and the second squeeze roll that is parallel to each other set up in the casing, still include the loading hopper, the vertical cross-section is down trapezoidal loading hopper and sets up in the casing top and communicates with each other with the feed inlet, be equipped with two first baffles of mutual articulated in the loading hopper, first baffle be down trapezoidal setting and with loading hopper inside wall adaptation, the structure that two first baffles are connected and are formed is the font structure setting of falling V, the opening that two first baffles formed is down and is close to the loading hopper bottom, the loading hopper is equipped with two relative control assembly, two control assembly for controlling two first baffles to open the angle are connected with the side that two first baffles are close to the loading hopper inside wall respectively. The utility model discloses the effect that improves sludge dewatering effect has.

Description

Sludge dewatering filter equipment

Technical Field

The utility model belongs to the technical field of sludge dewatering's technique and specifically relates to a sludge dewatering filter equipment is related to.

Background

A sludge treatment method is provided for removing water from fluid primary, concentrated or digested sludge and converting the sludge into semi-solid or solid sludge blocks. After dewatering, the water content of the sludge can be reduced to fifty-five percent to eighty percent, depending on the properties of the sludge and the sediments and the efficiency of the dewatering equipment. The urban domestic sewage and industrial wastewater are treated by a sewage treatment plant and discharged after reaching the standard, and the method is an essential environmental engineering measure for protecting water resources and building urban ecological environment. Because the water content of the sludge is high, the sludge is large in quantity, and high-concentration pollutants are enriched, if the sludge cannot be properly treated or disposed, the normal operation of a municipal sewage treatment plant is directly influenced, and more importantly, the sludge can bring serious secondary pollution to the environment.

The Chinese utility model with the prior publication number of CN210560006U discloses an activated sludge dewatering and filtering device, which comprises a filter casing, a first motor is fixedly connected to one side of the filter casing, a first central rotating column is fixedly connected to the output end of the first motor, the outer surface of the first central rotating column is fixedly connected with the filter casing through a bearing, a first squeeze roller is fixedly connected to the outer surface of the first central rotating column, a first receiving drainage cover shell is fixedly connected to the inner wall of the filter casing, sludge can be squeezed and separated through the arrangement of the first squeeze roller and a second squeeze roller, moisture enters the first squeeze roller and the second squeeze roller through a filtering through hole at the bottom of the first squeeze roller and the second squeeze roller, and due to the action of gravity, the moisture flows out through the filtering through hole at the bottom of the first squeeze roller and the second squeeze roller and is collected by the first receiving drainage cover shell and the second receiving drainage cover shell, and finally is discharged out of the filter casing, the sludge residue and the water absorbed in the sludge are separately treated, the practicability of the device is improved, and the filtering effect is better.

The above prior art solutions have the following drawbacks: when the workman used above-mentioned dehydration filter equipment, because mud directly falls to between first squeeze roll and the second squeeze roll from the feed inlet, if the input rate of mud is too fast, mud will pile up between first squeeze roll and second squeeze roll, accumulational mud easily overflows from upwards between first squeeze roll and the second squeeze roll, then through the clearance of first squeeze roll and filter housing, the clearance of second squeeze roll and filter housing removes to the discharge gate to lead to the dewatering effect of mud relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sludge dewatering filter equipment, which has the effect of improving the sludge dewatering effect.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a sludge dewatering filter equipment, includes casing, first squeeze roll and second squeeze roll, the casing top is equipped with the feed inlet, chassis bottom is equipped with the discharge gate, and is parallel to each other first squeeze roll and second squeeze roll set up in the casing, and length equals under the clearance that first squeeze roll and second squeeze roll formed is located the feed inlet, still includes the loading hopper, and the vertical section is down trapezoidal the loading hopper sets up in casing top and communicates with each other with the feed inlet, be equipped with two first baffles of mutual articulated in the loading hopper, first baffle is down trapezoidal setting and has an interval, two with the loading hopper inside wall the structure that first baffle connection formed is the font structure setting of falling V, two the opening that first baffle formed is down and be close to the loading hopper bottom, the loading hopper is equipped with two relative control assembly, is used for controlling two control assembly that first baffle opened the angle are close to the loading hopper with two first baffles respectively The side surfaces of the side walls are connected.

Through adopting above-mentioned technical scheme, mud gets into the loading hopper back from the top of loading hopper, need just can fall into the casing through two first baffles, the workman can adjust the size that two first baffles opened the angle through controlling two control assembly, can adjust loading hopper bottom open-ended size, thereby can adjust the speed that mud got into the casing, it piles up to reduce the mud between first squeeze roll and the second squeeze roll, prevent that mud from piling up too much and direct movement to the discharge gate, thereby the dewatering effect of mud has been improved.

The present invention may be further configured in a preferred embodiment as: the loading hopper inside wall is equipped with two relative mount pads, two longitudinal sliding is connected with the horizontally head rod between the mount pad, two the higher side of head plate all is articulated with the head rod, the length of head rod and the higher side of head plate equals.

Through adopting above-mentioned technical scheme, the head rod provides articulated position for first baffle, can be longitudinal sliding between the mount pad through first connecting rod when two first baffles open and shut.

The present invention may be further configured in a preferred embodiment as: the control assembly includes connecting block, second screw rod and handheld piece, the connecting block rotates to be connected in the lower side of first baffle, the second screw rod wherein one end rotates to be connected in the connecting block and is close to the side of loading hopper inside wall, and is horizontally one end threaded connection that the connecting block was kept away from to the second screw rod just is to stretch out the loading hopper setting in the loading hopper, the handheld piece is fixed in the one end that the second screw rod stretches out the loading hopper.

Through adopting above-mentioned technical scheme, the workman can rotate the second screw rod through handheld piece, adjusts the length that the second screw rod stretches into the loading hopper to adjust the contained angle size between two first baffles.

The present invention may be further configured in a preferred embodiment as: the improved extrusion device is characterized in that two opposite second baffles are arranged in the casing, the length direction of each second baffle is parallel to the length direction of the corresponding first extrusion roller, the length of each second baffle is equal to the length of the corresponding first extrusion roller, the second baffles are connected to two inner side faces of the casing parallel to the length direction of the corresponding first extrusion roller respectively, the second baffles are located above the first extrusion rollers and the second extrusion rollers and are arranged in a downward inclined mode, the lower side edges of the second baffles are close to the first extrusion rollers and the second extrusion rollers respectively, and the lower side edges of the second baffles are close to gaps between the first extrusion rollers and the second extrusion rollers.

Through adopting above-mentioned technical scheme, two second baffles can block the mud that overflows between first squeeze roll and the second squeeze roll, prevent that mud directly moves to the discharge gate.

The present invention may be further configured in a preferred embodiment as: be equipped with the horizontally backup pad through three second connecting rods in the loading hopper, the second connecting rod is fixed in between backup pad side and the loading hopper inside wall, the backup pad is located the head rod top and is close to the top of loading hopper, is circular shape the backup pad top surface is equipped with vertical first screw rod, first screw rod cover is equipped with and is the circular shape third baffle, first screw rod threaded connection has the nut that is used for injecing the third baffle, the third baffle is located between nut and the backup pad, and is horizontal the area of third baffle is bigger than the area of backup pad, the side of third baffle and the inside wall butt of loading hopper, a plurality of unloading holes that supply mud to pass through are seted up to third baffle top surface.

Through adopting above-mentioned technical scheme, backup pad and first screw rod provide the position of installation for the third baffle, and the workman can change the third baffle of unloading hole variation in size according to actual conditions to the speed that control mud got into.

The present invention may be further configured in a preferred embodiment as: the bottom surface of the supporting plate is provided with a stirring component which is used for stirring and pushing the sludge to move downwards, and the stirring component is positioned above the first connecting rod.

Through adopting above-mentioned technical scheme, stirring subassembly can intensive mixing mud, also can promote mud and move down to be favorable to the better entering casing of mud.

The present invention may be further configured in a preferred embodiment as: stirring subassembly includes protective housing, waterproof servo motor and hob, the protective housing is fixed in the backup pad bottom surface, waterproof servo motor installs in the protective housing, waterproof servo motor's output shaft wears to establish the bottom surface of protective housing and is and stretch out the setting of protective housing bottom surface, and is vertical the hob wherein one end is fixed in the one end that waterproof servo motor output shaft stretches out the protective housing bottom surface, the hob is equipped with and is used for the stirring and promotes the spiral leaf that mud moved down, there is the interval in hob bottom and the head rod.

Through adopting above-mentioned technical scheme, waterproof servo motor drive hob, the helical lobe can stir and promote mud and move down, and the workman can control the rotational speed of hob through waterproof servo motor to adjust the speed that moves down of mud.

The present invention may be further configured in a preferred embodiment as: the part between the side wall of the charging hopper and the bottom end of the spiral rod) is provided with a water filtering layer, a water collecting tank is arranged at the periphery of the side wall of the water filtering layer and communicated with the water filtering layer, and a drain pipe is arranged on the water collecting tank and communicated with the water collecting tank.

Through adopting above-mentioned technical scheme, the moisture that extrudees out from mud can get into the water catch bowl through drainage bed, and hydroenergy flows out the water catch bowl through the drain pipe.

To sum up, the utility model discloses a following at least one useful technological effect:

1. mud gets into the loading hopper back from the top of loading hopper, need just can fall into the casing through two first baffles, the workman can adjust the size that two first baffles open the angle through controlling two control assembly, can adjust loading hopper bottom open-ended size, thereby can adjust the speed that mud got into the casing, it piles up to reduce the mud between first squeeze roll and the second squeeze roll, prevent that mud from piling up too much and direct movement to the discharge gate, thereby the dehydration effect of mud has been improved.

2. Two second baffles can block the mud that overflows between first squeeze roll and the second squeeze roll, prevent that mud directly moves to the discharge gate.

3. The waterproof servo motor drives the screw rod, the spiral blade can stir and push the sludge to move downwards, and workers can control the rotating speed of the screw rod through the waterproof servo motor, so that the downward movement speed of the sludge is adjusted.

Drawings

FIG. 1 is a sectional view of a sludge dehydrating filtration apparatus according to the present embodiment.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.

Fig. 4 is a partially enlarged schematic view of a portion C in fig. 1.

In the figure, 1, a housing; 11. a feed inlet; 12. a discharge port; 13. a second baffle; 2. a first squeeze roll; 3. a second squeeze roll; 4. a hopper; 41. a first baffle plate; 42. filtering a water layer; 421. a water collection tank; 422. a drain pipe; 43. a mounting seat; 431. a first connecting rod; 432. a groove; 5. a control component; 51. connecting blocks; 52. a second screw; 53. a handpiece; 6. a second connecting rod; 61. a support plate; 611. a first screw; 612. a nut; 613. a conical table; 7. a third baffle plate; 71. a blanking hole; 8. a stirring assembly; 81. a protective shell; 82. a waterproof servo motor; 83. a screw rod; 831. helical leaves.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the sludge dewatering and filtering device disclosed by the utility model, comprising a casing 1, a first squeeze roll 2, a second squeeze roll 3 and a charging hopper 4, wherein the top of the casing 1 is provided with a feed inlet 11, the bottom of the casing 1 is provided with a discharge outlet 12, the first squeeze roll 2 and the second squeeze roll 3 which are parallel to each other are arranged in the casing 1, a gap formed by the first squeeze roll 2 and the second squeeze roll 3 with equal length is positioned under the feed inlet 11, the first squeeze roll 2 and the second squeeze roll 3 are both provided with a filtering through hole and a drainage housing (not shown in the figure) for collecting moisture, the charging hopper 4 with an inverted trapezoid vertical section is arranged at the top of the casing 1, the bottom of the charging hopper 4 is communicated with the feed inlet 11, two first baffles 41 are connected in the charging hopper 4, the side edges of the two first baffles 41 which are close to each other are hinged to each other, the first baffles 41 are connected into an inverted V-shaped, the two first baffles 41 form an opening facing downwards and close to the bottom of the hopper 4, the hopper 4 is provided with two opposite control assemblies 5, the two control assemblies 5 for controlling the opening angles of the two first baffles 41 are respectively connected with the side surfaces of the two first baffles 41 close to the inner side wall of the charging hopper 4, the first baffles 41 in the shape of an inverted trapezoid are spaced from the charging hopper 4 when being opened, sludge can fall into the casing 1 only through the two first baffles 41 after entering the charging hopper 4 from the top of the charging hopper 4, the worker can adjust the size of the opening angle of the two first baffle plates 41 by controlling the two control assemblies 5, and then adjust the size of 4 bottom openings of loading hopper to can adjust the speed that mud got into casing 1, reduce the mud between first squeeze roll 2 and the second squeeze roll 3 and pile up, prevent that mud from piling up too much and direct movement to discharge gate 12, thereby improve the dehydration effect of mud.

Referring to fig. 1 and 2, a horizontal support plate 61 is arranged in the hopper 4 through three second connecting rods 6, the second connecting rods 6 are fixed between the side edges of the support plate 61 and the inner side wall of the hopper 4, the circular support plate 61 is positioned above the first baffle plate 41 and close to the top of the hopper 4, a vertical first screw 611 is arranged on the top surface of the support plate 61, a circular third baffle plate 7 is sleeved on the first screw 611, a nut 612 for limiting the third baffle plate 7 is connected with the first screw 611 in a threaded manner, the third baffle plate 7 is positioned between the nut 612 and the support plate 61, the area of the horizontal third baffle plate 7 is larger than that of the support plate 61, the side edges of the third baffle plate 7 are abutted against the inner side wall of the hopper 4, a plurality of blanking holes 71 for sludge to pass through are formed in the top surface of the third baffle plate 7, the plurality of blanking holes 71 are arranged at intervals along the side edges of the third baffle plate 7, the support plate 61 and the first screw 611 provide mounting positions, the worker can change the third baffle 7 with different sizes of the blanking hole 71 according to actual conditions, thereby controlling the speed of the sludge entering.

Referring to fig. 2, the first screw 611 is sleeved with a tapered platform 613, the tapered platform 613 is located between the third baffle 7 and the nut 612, the area of the top surface of the tapered platform 613 is smaller than that of the bottom surface, and the tapered platform 613 can disperse sludge around, reduce the impact force of the sludge on the third baffle 7, and make the sludge dispersion more uniform.

Referring to fig. 1, the bottom surface of the supporting plate 61 is provided with a stirring component 8 for stirring and pushing the sludge to move downwards, the stirring component 8 is positioned above the first baffle 41, the stirring component 8 can fully stir the sludge and can also push the sludge to move downwards, so that the sludge can better enter the casing 1.

Referring to fig. 1, stirring subassembly 8 includes protective housing 81, waterproof servo motor 82 and hob 83, protective housing 81 is fixed in the backup pad 61 bottom surface, waterproof servo motor 82 installs in protective housing 81, waterproof servo motor 82's output shaft wears to establish and stretches out the protective housing 81 bottom surface, vertical hob 83 wherein one end is fixed in the one end that waterproof servo motor 82 output shaft stretches out the protective housing 81 bottom surface, hob 83 lateral wall is equipped with and is used for stirring and promotes mud downstream's helical blade 831, waterproof servo motor 82 drives hob 83, helical blade 831 can stir and promote mud and move down, the workman can control the rotational speed of hob 83 through waterproof servo motor 82, thereby adjust the speed that moves down of mud.

Referring to fig. 1, a water filtering layer 42 is arranged on the side wall of the charging hopper 4 and between the supporting plate 61 and the bottom end of the screw rod 83, a water collecting tank 421 is arranged on the outer side wall of the water filtering layer 42 in an enclosing manner, the water collecting tank 421 is communicated with the water filtering layer 42, a water discharging pipe 422 is arranged on the water collecting tank 421, water extruded from sludge can enter the water collecting tank 421 through the water filtering layer 42, and water can flow out of the water collecting tank 421 through the water discharging pipe 422.

Referring to fig. 1 and 3, the inside wall of the hopper 4 is provided with two opposite installation seats 43, the two installation seats 43 are located below the side of the screw rod 83, vertical grooves 432 are respectively formed in the side faces, close to each other, of the two installation seats 43, a horizontal first connecting rod 431 is slidably connected between the two grooves 432, the side edges, higher than the two first baffles 41, of the two first baffles are hinged to the first connecting rod 431, the length of the side edges, higher than the first baffles 41, of the first connecting rod 431 is equal to that of the first baffles 41, the first connecting rod 431 provides a hinged position for the first baffles 41, and the two first baffles 41 can longitudinally slide between the installation seats 43 through the first connecting rod 431 when being opened and closed.

Referring to fig. 4, the control assembly 5 includes a connection block 51, a second screw 52 and a hand piece 53, the connection block 51 is rotatably connected to a midpoint of a lower side of the first baffle 41, one end of the second screw 52 is rotatably connected to a side surface of the connection block 51 close to an inner side wall of the hopper 4, one end of the horizontal second screw 52 far away from the connection block 51 is screwed to the hopper 4 and extends out of the hopper 4, the hand piece 53 is fixed to one end of the second screw 52 extending out of the hopper 4, the second screw 52 cannot drive the connection block 51 to rotate, a worker can rotate the second screw 52 through the hand piece 53, and the length of the second screw 52 extending into the hopper 4 is adjusted, so as to adjust an included angle between the two first baffles 41.

Referring to fig. 1, two opposite second baffles 13 are arranged in a machine shell 1, the length direction of the second baffles 13 is parallel to the length direction of a first squeezing roller 2, the length of the second baffles 13 is equal to the length of the first squeezing roller 2, the two second baffles 13 are respectively connected to two inner side faces of the machine shell 1, which are parallel to the length direction of the first squeezing roller 2, the second baffles 13 are positioned above the first squeezing roller 2 and the second squeezing roller 3, the two second baffles 13 are arranged in a downward inclination manner, the lower side edges of the two second baffles 13 are respectively close to the first squeezing roller 2 and the second squeezing roller 3, the lower side edges of the two second baffles 13 are both close to a gap between the first squeezing roller 2 and the second squeezing roller 3, and the two second baffles 13 can block sludge overflowing from the space between the first squeezing roller 2 and the second squeezing roller 3, so as to prevent the sludge from directly moving to a discharge port 12.

The implementation principle of the embodiment is as follows: when the dewatering and filtering device is used, a worker pours sludge into the top of the charging hopper 4, the sludge is dispersed around after passing through the conical table 613 and then uniformly falls on the third baffle 7 and then continuously moves downwards through the discharging hole 71 of the third baffle 7, the waterproof servo motor 82 drives the screw rod 83 to rotate, the screw rod 83 drives the screw blade 831 to stir the sludge and push the sludge to move downwards, water extruded from the sludge can enter the water collecting tank 421 through the water filtering layer 42, water can flow out of the water collecting tank 421 through the water discharging pipe 422, the worker can adjust the rotating speed of the screw rod 83 through the waterproof servo motor 82 so as to adjust the speed of the screw blade 831 pushing the sludge, when the sludge moves downwards to the two first baffles 41, the worker can adjust the included angle between the two first baffles 41 through the hand piece 53 so as to adjust the size of the opening at the bottom of the charging hopper 4 and adjust the speed of the sludge entering the machine shell 1, reduce the mud between first squeeze roll 2 and the second squeeze roll 3 and pile up, prevent that mud from piling up too much and direct movement to discharge gate 12, thereby the dewatering effect of mud has been improved, mud drops between first squeeze roll 2 and the second squeeze roll 3 after getting into casing 1, first squeeze roll 2 and second squeeze roll 3 extrude the dehydration back to mud, moisture gets into the drainage housing through filtering the through-hole, mud is discharged from discharge gate 12, two second baffles 13 can block the mud that overflows between first squeeze roll 2 and the second squeeze roll 3, prevent mud direct movement to discharge gate 12.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The sludge dewatering and filtering device comprises a shell (1), a first squeeze roll (2) and a second squeeze roll (3), wherein a feed inlet (11) is formed in the top of the shell (1), a discharge outlet (12) is formed in the bottom of the shell (1), the first squeeze roll (2) and the second squeeze roll (3) which are parallel to each other are arranged in the shell (1), the length of the first squeeze roll (2) and the length of the second squeeze roll (3) which form a gap are positioned under the feed inlet (11), the sludge dewatering and filtering device is characterized by further comprising a feed hopper (4), the feed hopper (4) with an inverted trapezoidal vertical section is arranged at the top of the shell (1) and is communicated with the feed inlet (11), two first baffle plates (41) which are hinged to each other are arranged in the feed hopper (4), the first baffle plates (41) are arranged in an inverted trapezoidal manner and have intervals with the inner side wall of the feed hopper (4), two the structure that first baffle (41) are connected and are formed is the setting of the font structure of falling V, two the opening that first baffle (41) formed is down and be close to loading hopper (4) bottom, loading hopper (4) are equipped with two relative control assembly (5), are used for controlling two control assembly (5) that first baffle (41) open the angle are connected with the side that two first baffles (41) are close to loading hopper (4) inside wall respectively.

2. The sludge dewatering and filtering device according to claim 1, wherein the inner side wall of the charging hopper (4) is provided with two opposite installation seats (43), a horizontal first connecting rod (431) is longitudinally and slidably connected between the two installation seats (43), the higher side edges of the two first baffle plates (41) are hinged with the first connecting rod (431), and the length of the first connecting rod (431) is equal to that of the higher side edges of the first baffle plates (41).

3. The sludge dewatering and filtering device according to claim 1, wherein the control assembly (5) comprises a connecting block (51), a second screw (52) and a hand piece (53), the connecting block (51) is rotatably connected to the lower side of the first baffle (41), one end of the second screw (52) is rotatably connected to the side surface of the connecting block (51) close to the inner side wall of the loading hopper (4), the horizontal end of the second screw (52) far away from the connecting block (51) is in threaded connection with the loading hopper (4) and is arranged to extend out of the loading hopper (4), and the hand piece (53) is fixed to the end of the second screw (52) extending out of the loading hopper (4).

4. The sludge dewatering and filtering device according to claim 1, wherein two opposite second baffles (13) are arranged in the casing (1), the length direction of the second baffle (13) is parallel to the length direction of the first extrusion roller (2), the length of the second baffle plates (13) is equal to that of the first extrusion roller (2), the two second baffle plates (13) are respectively connected with two inner side surfaces of the machine shell (1) which are parallel to the length direction of the first extrusion roller (2), second baffle (13) are located first squeeze roll (2) and second squeeze roll (3) top, two second baffle (13) are the downward sloping setting, two the lower side of second baffle (13) is close to first squeeze roll (2) and second squeeze roll (3) respectively, two the lower side of second baffle (13) all is close to the clearance department between first squeeze roll (2) and second squeeze roll (3).

5. The sludge dewatering and filtering device according to claim 2, wherein a horizontal support plate (61) is arranged in the hopper (4) through three second connecting rods (6), the second connecting rods (6) are fixed between the side edges of the support plates (61) and the inner side wall of the hopper (4), the support plates (61) are located above the first connecting rods (431) and close to the top of the hopper (4), a vertical first screw (611) is arranged on the top surface of the circular support plate (61), a circular third baffle (7) is sleeved on the first screw (611), a nut (612) for limiting the third baffle (7) is connected to the first screw (611) in a threaded manner, the third baffle (7) is located between the nut (612) and the support plates (61), and the area of the horizontal third baffle (7) is larger than that of the support plates (61), the side of the third baffle (7) is abutted against the inner side wall of the charging hopper (4), and a plurality of discharging holes (71) for sludge to pass through are formed in the top surface of the third baffle (7).

6. The sludge dewatering and filtering device according to claim 5, wherein the bottom surface of the supporting plate (61) is provided with a stirring assembly (8) for stirring and pushing the sludge to move downwards, and the stirring assembly (8) is positioned above the first connecting rod (431).

7. The sludge dewatering and filtering device according to claim 6, wherein the stirring assembly (8) comprises a protective shell (81), a waterproof servo motor (82) and a screw rod (83), the protective shell (81) is fixed on the bottom surface of the supporting plate (61), the waterproof servo motor (82) is installed in the protective shell (81), an output shaft of the waterproof servo motor (82) penetrates through and is arranged to extend out of the bottom surface of the protective shell (81), one end of the vertical screw rod (83) is fixed at one end, extending out of the bottom surface of the protective shell (81), of the output shaft of the waterproof servo motor (82), the screw rod (83) is provided with a screw blade (831) for stirring and pushing sludge to move downwards, and a distance exists between the bottom end of the screw rod (83) and the first connecting rod (431).

8. The sludge dewatering and filtering device according to claim 7, wherein the part of the side wall of the loading hopper (4) between the support plate (61) and the bottom end of the screw rod (83) is provided with a water filtering layer (42), a water collecting tank (421) is enclosed on the outer side wall of the water filtering layer (42), the water collecting tank (421) is communicated with the water filtering layer (42), the water collecting tank (421) is provided with a drain pipe (422), and the drain pipe (422) is communicated with the water collecting tank (421).