A dewatering device for sludge treatment

Abstract

The invention discloses a dewatering device for sludge treatment, which relates to the technical field of sludge treatment, and comprises a dewatering box; an extrusion piece, which is arranged on the dewatering box and is used for extruding and dewatering the sludge; a water filtering mechanism, which is arranged on the side of the dewatering box and is used for collecting the water flow discharged from the sludge; a pushing and discharging mechanism, which is arranged in the dewatering box and is used for pushing and discharging the dewatered sludge; wherein the water filtering mechanism comprises a water collecting box, which is arranged on the side of the dewatering box; a filter yarn, which is arranged in the water collecting box through a transmission pipe, and a notch is opened on the side of the dewatering box; a pressing frame, which is slidably arranged in the water collecting box, and the side of the pressing frame can contact the filter yarn and arrange the filter yarn in the notch, so that the sludge can be continuously dehydrated, and the filter yarn can be rotated and adjusted, so as to avoid clogging of the filter yarn and cause insufficient sludge dehydration.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and more particularly to a dewatering device for sludge treatment. Background Art

[0002] In the sewage treatment process, sludge, as a byproduct of sewage treatment, contains a large amount of water and a small amount of solid matter. In order to achieve sludge reduction, stabilization and harmless treatment, sludge dehydration has become an indispensable step. Traditional sludge dehydration methods include natural drying and mechanical pressing, but these methods often have problems such as low efficiency, high energy consumption, and incomplete dehydration.

[0003] The existing patent announcement number CN118239659B provides an industrial sludge dewatering device, which includes a drying box and a filter press box. The filter press box is installed on the top of the drying box, and a feed hopper is arranged near the middle position on one side of the filter press box. The feed hopper and the filter press box are designed to be connected. A first pushing member is arranged at the center of the top of the filter press box, and the output end of the first pushing member is placed in the filter press box and fixedly connected with a pressing plate. Filter holes are evenly arranged at the front and rear ends near the bottom of the filter press box, and a filter screen is installed in the filter holes. A discharge port is arranged at the bottom end of one side of the filter press box, and a pushing mechanism for discharging the sludge after the filter press from the discharge port is arranged at the bottom end of the filter press box. A feed port is arranged at the top of the drying box corresponding to the discharge port, and a heating plate is embedded and installed at the bottom end of the drying box. A turning mechanism for turning the sludge is arranged in the drying box, and a collecting mechanism is also arranged on the drying box. The present invention greatly reduces the water content in the sludge through double dehydration treatment, and has a good dehydration effect.

[0004] However, the device still has some shortcomings in use. In the long-term operation practice, we have observed that it still has some limitations. In particular, during the sludge extrusion process, the sludge particles will block the tiny filter holes on the filter plate. Once the filter holes are blocked, it will not only directly lead to a decrease in dehydration efficiency, but also cause poor sludge dehydration effect in severe cases, and fail to meet the expected treatment standards. Based on this, we provide a dehydration device for sludge treatment. Summary of the invention

[0005] In order to solve the technical problem raised in the above background technology that during the sludge extrusion treatment process, sludge particles will block the tiny filter holes on the filter plate. Once the filter holes are blocked, it will not only directly lead to a decrease in dehydration efficiency, but also cause poor sludge dehydration effect in severe cases and fail to achieve the expected treatment standards, the present invention provides a dehydration device for sludge treatment.

[0006] The present invention provides a dewatering device for sludge treatment, which adopts the following technical solution:

[0007] A dewatering device for sludge treatment comprises a dewatering box; an extrusion piece, arranged on the dewatering box, for extruding and dewatering the sludge; a water filtering mechanism, arranged on the side of the dewatering box, for collecting the water flow discharged from the sludge; a pushing and discharging mechanism, arranged in the dewatering box, for pushing and discharging the dewatered sludge; wherein the water filtering mechanism comprises a water collecting box, arranged on the side of the dewatering box; a filter belt, arranged in the water collecting box through a transmission pipe, and a notch is opened on the side of the dewatering box; a pressing frame, slidably arranged in the water collecting box, and the side of the pressing frame can contact the filter belt and arrange the filter belt in the notch.

[0008] Preferably, a driving member 1 is provided inside the water collecting tank via an assembly plate, and the pressing frame is assembled on the output end of the driving member 1 via a vertical plate.

[0009] Preferably, a cleaning roller is rotatably connected to a side of the vertical plate away from the pressing frame, and the thorns on the cleaning roller can pass through the filter holes of the filter yarn belt.

[0010] Preferably, a driving member 2 is mounted on the top of the water collecting tank, a nozzle is mounted on the output end of the driving member 2, the nozzle corresponds to the position of the cleaning roller, and the nozzle is arranged inclined.

[0011] Preferably, a collecting hopper is installed inside the water collecting box at a position relative to the nozzle, for collecting the blockages cleared from the filter belt.

[0012] Preferably, the pushing and discharging mechanism includes a driving member three, which is mounted on the dehydration box, and a pushing plate is provided at the output end of the driving member three, and the pushing plate is arranged in the inner wall of the dehydration box; a discharge port, which is opened at the bottom of the dehydration box; a sliding rod, which is mounted on the side of the dehydration box through a vertical bar, and a pushing sleeve is sleeved on the middle part of the sliding rod, and a driving member four for pushing the pushing sleeve to move is installed on the top of the vertical bar; a rotating bar, which is sleeved on the sliding rod, and the rotating bar is rotatably connected with the pushing sleeve; a blocking plate, which is arranged in the discharge port, and the blocking plate is mounted on the side end of the rotating bar through the vertical rod; a spiral groove is opened on the outer side surface of the sliding rod near the bottom end, and the rotating bar can rotate 180 degrees when contacting the spiral groove.

[0013] Preferably, a plurality of spacers are arranged inside the discharge port, and a plurality of plugging pads adapted to the spacers are arranged on the top of the blocking plate.

[0014] Preferably, the extrusion member comprises a driving member 5, a conveying end of the driving member 5 is equipped with an extrusion plate, and the extrusion plate is arranged in the dehydration box.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] 1. The sludge to be dehydrated is transported to the dehydration box through the pipeline on the dehydration box, and then the sludge is squeezed and dehydrated through the extrusion piece. The filter belt is arranged at the notch of the dehydration box, so that the water flow in the sludge can enter the water collecting box through the notch and the filter belt. Then the extrusion piece moves up, and the discharge mechanism is pushed to discharge the dehydrated sludge to the conveyor belt. After the filter belt is used for a period of time, the filter belt can be driven by the motor to rotate, so that the unused area of ​​the filter belt enters the notch to filter the water in the sludge. Through this structural design, the sludge can be continuously dehydrated, and the filter belt can be rotated and adjusted, so as to avoid the clogging of the filter belt, resulting in insufficient sludge dehydration.

[0017] 2. The pressing frame is pushed to separate from the filter belt by the driving member, and the cleaning roller can contact and tighten the filter belt. During the rotation of the filter belt, the used area can contact the thorns on the cleaning roller, so that the thorns on the cleaning roller can clean the blocked impurities. Through this structural design, the impurities blocked on the filter belt can be cleaned, ensuring the continuity of the filter belt during use;

[0018] 3. When the cleaning roller is in use, the nozzle can also be turned on to spray water on the filter gauze to ensure that the filter gauze is thoroughly cleaned of blocked impurities;

[0019] 4. The push sleeve is pushed up and down on the slide bar by the driving member 4, thereby driving the rotating bar to move up and down on the slide bar, thereby separating the blocking plate from the discharge port. When the rotating bar moves down and contacts the spiral groove, the rotating bar moves up and down and rotates on the spiral groove, thereby completely separating the blocking plate from the discharge port. Then the driving member 3 pushes the push plate to move in the dewatering box, thereby pushing the sludge block to the discharge port and dropping it onto the conveyor belt. After the discharge is completed, the driving member 4 drives the rotating bar to move up, and the rotating bar cooperates with the spiral groove to align the blocking plate with the discharge port again. Then it continues to move up to shield the discharge port, thereby completing the closure of the bottom of the dewatering box. Through this structural design, the sludge blocks can be discharged, and the blocking plate can not restrict the falling of the sludge blocks, thereby ensuring that the sludge blocks fall onto the conveyor belt.

[0020] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a dewatering device and a conveyor belt for sludge treatment in an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a dewatering device for sludge treatment in an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of the other side of a dewatering device for sludge treatment in an embodiment of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of a dewatering device for sludge treatment in an embodiment of the present invention;

[0025] Figure 5 is a schematic diagram of the structure inside the water collecting tank in an embodiment of the present invention;

[0026] Figure 6 is a schematic structural diagram of a water filtering mechanism in an embodiment of the present invention;

[0027] Figure 7 is a structural schematic diagram of the other side of the water filtering mechanism in an embodiment of the present invention;

[0028] Figure 8 It is a structural schematic diagram of a push-discharge mechanism in an embodiment of the present invention;

[0029] Fig. 9 Is a schematic diagram of the structure of the other side of the push discharge mechanism in an embodiment of the present invention;

[0030] Fig.10 Schematic diagram of the cleaning state of the filter tape in an embodiment of the present invention;

[0031] Fig.11 is a schematic diagram of the use state of the filter tape in an embodiment of the present invention;

[0032] Fig.12 is a schematic diagram of another assembly method of the filter yarn tape in an embodiment of the present invention;

[0033] Fig.13 It is a schematic diagram of another assembly method and usage state of the filter yarn tape in an embodiment of the present invention.

[0034] Explanation of the reference numerals: 1. dewatering box; 2. extrusion plate; 3. water filtering mechanism; 300. water collecting box; 301. filter yarn; 302. notch; 303. pressing frame; 304. vertical plate; 305. cleaning roller; 306. nozzle; 307. collecting bucket; 308. auxiliary roller; 4. pushing and discharging mechanism; 400. pushing plate; 401. discharge port; 402. sliding rod; 403. pushing sleeve; 404. rotating bar; 405. blocking plate; 406. spiral groove. DETAILED DESCRIPTION

[0035] The following is combined with Figures 1 to 13 The present invention is described in further detail.

[0036] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features.

[0037] Embodiment 1

[0038] The embodiment of the present invention discloses a dewatering device for sludge treatment. Figures 1 to 5 A dewatering device for sludge treatment comprises a dewatering box 1; an extruding piece, arranged on the dewatering box 1, for extruding and dewatering the sludge; a water filtering mechanism 3, arranged on the side of the dewatering box 1, for collecting the water flow discharged from the sludge; a pushing and discharging mechanism 4, arranged in the dewatering box 1, for pushing and discharging the dewatered sludge; wherein the water filtering mechanism 3 comprises a water collecting box 300, arranged on the side of the dewatering box 1; a filter tape 301, arranged in the water collecting box 300 through a transmission pipe, and a notch 302 is opened on the side of the dewatering box 1; a pressing frame 303, slidably arranged in the water collecting box 300, and the side of the pressing frame 303 can contact the filter tape 301 and arrange the filter tape 301 in the notch 302.

[0039] Specifically, the top of the water collecting tank 300 is equipped with a motor that drives the transmission pipe to rotate. Fig.12 and Fig.13 As shown, the filter tape 301 can also be assembled and fixed by four rotating tubes.

[0040] In an embodiment of the present application, the dewatering device for sludge treatment of the present application is mounted on a conveyor belt. After being dehydrated by the dewatering device, the sludge is transported to an external drying box for drying. The sludge to be dehydrated is transported to the dewatering box 1 through a pipe on the dewatering box 1, and then the sludge is extruded and dehydrated by an extruder. The filter belt 301 is arranged at the notch 302 of the dewatering box 1, so that the water flow in the sludge can enter the water collecting box 300 through the notch 302 and the filter belt 301. Then the extruder moves upward to push the discharge mechanism 4 to discharge the dehydrated sludge onto the conveyor belt. After the filter belt 301 has been used for a period of time, the filter belt 301 can be driven by a motor to rotate, thereby allowing the unused area of ​​the filter belt 301 to enter the notch 302 to filter the water in the sludge. Through this structural design, the sludge can be continuously dehydrated, and the filter belt 301 can be rotated and adjusted, thereby avoiding clogging of the filter belt 301 and causing insufficient sludge dehydration.

[0041] like Figure 6 and Figure 7 As shown, two auxiliary rollers 308 are installed in the area where the pressing frame 303 contacts the filter tape 301. This design can ensure the smoothness of the filter tape 301 during rotation.

[0042] like Figure 7 As shown, a driving member 1 is provided inside the water collecting box 300 through an assembly plate, and a pressing frame 303 is assembled at the output end of the driving member 1 through a vertical plate 304. The pressing frame 303 is driven by the driving member 1 to move inside the water collecting box 300, thereby extending the filter belt 301 into the notch 302.

[0043] like Figure 6 and Figure 7 As shown, a cleaning roller 305 is rotatably connected to one side of the vertical plate 304 away from the pressing frame 303 , and the thorns on the cleaning roller 305 can pass through the filter holes of the filter yarn belt 301 .

[0044] In the embodiment of the present application, when the filter tape 301 is rotated, the pressing frame 303 is pushed to separate from the filter tape 301 by a driving member, and the cleaning roller 305 can contact and tighten the filter tape 301. During the rotation of the filter tape 301, the used area can contact the protrusions on the cleaning roller 305, so that the protrusions on the cleaning roller 305 can clean the blocked impurities. Through this structural design, the impurities blocked on the filter tape 301 can be cleaned, ensuring the continuity of the filter tape 301 during use.

[0045] like Figure 5 and Figure 6 As shown, the top of the water collecting tank 300 is equipped with a driving member 2, and the output end of the driving member 2 is equipped with a nozzle 306. The nozzle 306 corresponds to the position of the cleaning roller 305, and the nozzle 306 is arranged inclined. The nozzle 306 is connected to an external hose and connected to external tap water (or a water pump).

[0046] In the embodiment of the present application, when the cleaning roller 305 is in use, the nozzle 306 can also be turned on to spray water on the filter belt 301 to ensure that the filter belt 301 is thoroughly cleaned of blocked impurities.

[0047] like Figure 5 As shown, a collecting bucket 307 is installed inside the water collecting box 300 relative to the position of the nozzle 306 for collecting the blockages cleaned on the filter tape 301. The collecting bucket 307 is a hollow structure. The water sprayed by the nozzle 306 can enter the water collecting box 300, and impurities can remain on the collecting bucket 307.

[0048] Embodiment 2

[0049] This embodiment is further optimized on the basis of the above embodiment, and the same parts as the above technical solution will not be repeated here. Figure 3 , Figure 8 and Fig. 9 As shown, in order to better realize the present invention, the following setting method is particularly adopted: in the embodiment of the present application, the pushing and discharging mechanism 4 includes a driving member three, which is assembled on the dehydration box 1, and a pushing plate 400 is arranged at the output end of the driving member three, and the pushing plate 400 is arranged in the inner wall of the dehydration box 1; a discharge port 401 is opened at the bottom of the dehydration box 1; a slide bar 402 is assembled on the side of the dehydration box 1 through a vertical bar, a push sleeve 403 is sleeved in the middle of the slide bar 402, and a driving member four for pushing the push sleeve 403 to move is assembled on the top of the vertical bar; a rotating bar 404 is sleeved on the slide bar 402, and the rotating bar 404 is rotatably connected with the push sleeve 403; a blocking plate 405 is arranged in the discharge port 401, and the blocking plate 405 is assembled at the side end of the rotating bar 404 through the vertical bar; a spiral groove 406 is opened on the outer side surface of the slide bar 402 near the bottom, and the rotating bar 404 can rotate 180 degrees when contacting the spiral groove 406.

[0050] In the embodiment of the present application, the dehydrated sludge is discharged by driving the push sleeve 403 to slide up and down on the slide bar 402 by the fourth driving member, thereby driving the rotating bar 404 to move up and down on the slide bar 402, so that the blocking plate 405 is separated from the discharge port 401. When the rotating bar 404 moves down and contacts the spiral groove 406, the rotating bar 404 moves up and down and rotates on the spiral groove 406, so that the blocking plate 405 is completely separated from the discharge port 401. Then the third driving member pushes the push plate 400 to move in the dehydration box 1. Thereby, the sludge block is pushed to the discharge port 401 and falls onto the conveyor belt. After the discharge is completed, the driving member 4 drives the rotating bar 404 to move upward, and the rotating bar 404 cooperates with the spiral groove 406 to make the blocking plate 405 align with the discharge port 401 again, and then continues to move upward to shield the discharge port 401, thereby completing the closure of the bottom of the dehydration box 1. Through this structural design, the sludge block can be discharged, and the blocking plate 405 can not restrict the falling of the sludge block, thereby ensuring that the sludge block falls on the conveyor belt.

[0051] like Figure 4 As shown, a plurality of partition bars are arranged inside the discharge port 401, and a plurality of plugging pads adapted to the partition bars are arranged on the top of the plugging plate 405. This design can break the sludge blocks into small pieces and let them fall, thereby facilitating the subsequent drying process.

[0052] like Figure 4 As shown, the extrusion member includes a driving member 5, and the conveying end of the driving member 5 is equipped with an extrusion plate 2. The extrusion plate 2 is arranged in the dehydration box 1. By moving the extrusion plate 2, the sludge in the dehydration box 1 can be compressed and dehydrated.

[0053] Specifically, driving member 1, driving member 2, and driving member 4 are electric push rods, and driving member 3 and driving member 5 are hydraulic cylinders. The control method of the present invention is controlled by a controller, and the control circuit of the controller can be realized by simple programming by technicians in this field. The control method and circuit connection will not be explained in detail here.

[0054] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0055] The implementation principle of a dehydration device for sludge treatment in an embodiment of the present invention is as follows: the sludge to be dehydrated is transported into the dehydration box 1 through a pipeline on the dehydration box 1, and then the sludge is extruded and dehydrated through an extrusion piece, and the filter belt 301 is arranged at the notch 302 of the dehydration box 1, so that the water flow in the sludge can enter the water collecting box 300 through the notch 302 and the filter belt 301, and then the extrusion piece moves upward to push the discharge mechanism 4 to discharge the dehydrated sludge to the conveyor belt, and after the filter belt 301 has been used for a period of time, the filter belt 301 can be driven by a motor to rotate, so that the unused area of ​​the filter belt 301 enters the notch 302 to filter the water in the sludge;

[0056] When the filter belt 301 is rotated, the pressing frame 303 is pushed to separate from the filter belt 301 by the driving member 1, and the cleaning roller 305 can contact and tighten the filter belt 301. During the rotation of the filter belt 301, the used area can contact the thorns on the cleaning roller 305, so that the thorns on the cleaning roller 305 can clean the blocked impurities. When the cleaning roller 305 is used, the nozzle 306 can also be turned on to spray water to wash the filter belt 301, thereby ensuring that the filter belt 301 is thoroughly cleaned of blocked impurities.

[0057] The dehydrated sludge is discharged by driving member 4 to push the push sleeve 403 to slide up and down on the slide bar 402, thereby driving the rotating bar 404 to move up and down on the slide bar 402, so that the blocking plate 405 is separated from the discharge port 401. When the rotating bar 404 moves down and contacts the spiral groove 406, the rotating bar 404 moves up and down and rotates on the spiral groove 406, so that the blocking plate 405 is completely separated from the discharge port 401. Then the driving member 3 pushes the push plate 400 to move in the dehydration box 1, thereby pushing the sludge block to the discharge port 401 and dropping it onto the conveyor belt. After the discharge is completed, the driving member 4 drives the rotating bar 404 to move up, and the rotating bar 404 cooperates with the spiral groove 406 to make the blocking plate 405 align with the discharge port 401 again, and then continues to move up to shield the discharge port 401, thereby completing the closure of the bottom of the dehydration box 1.

[0058] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0062] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dewatering device for sludge treatment, characterized in that: include: Dehydration tank (1); An extrusion member, arranged on the dewatering box (1) and used for extruding and dewatering the sludge; A water filtering mechanism (3) is arranged on the side of the dewatering box (1) and is used to collect water discharged from the sludge; A pushing and discharging mechanism (4) is arranged in the dewatering box (1) and is used for pushing and discharging the dewatered sludge; Wherein, the water filtering mechanism (3) comprises: A water collecting tank (300) is arranged on the side of the dehydration tank (1); The filter yarn belt (301) is arranged in the water collecting box (300) through the transmission tube, and a notch (302) is opened on the side of the dewatering box (1); A pressing frame (303) is slidably disposed in the water collecting box (300), and a side surface of the pressing frame (303) is capable of contacting the filter tape (301) and arranging the filter tape (301) in the notch (302); A driving member 1 is arranged inside the water collecting box (300) via an assembly plate, and the pressing frame (303) is assembled on the output end of the driving member 1 via a vertical plate (304); A cleaning roller (305) is rotatably connected to a side of the vertical plate (304) away from the pressing frame (303), and the thorns on the cleaning roller (305) are capable of passing through the filter holes of the filter yarn belt (301); The top of the water collecting tank (300) is equipped with a second driving member, the output end of the second driving member is equipped with a nozzle (306), the nozzle (306) corresponds to the position of the cleaning roller (305), and the nozzle (306) is arranged in an inclined manner; The top of the water collecting tank (300) is equipped with a motor for driving the transmission pipe to rotate; The push-discharge mechanism (4) comprises: A driving member three is mounted on the dehydration box (1); a push plate (400) is provided at the output end of the driving member three, and the push plate (400) is arranged in the inner wall of the dehydration box (1); A discharge port (401) is provided at the bottom of the dehydration box (1); A slide bar (402) is mounted on the side of the dehydration box (1) via a vertical bar, a push sleeve (403) is sleeved on the middle of the slide bar (402), and a driving member (4) for pushing the push sleeve (403) to move is mounted on the top of the vertical bar; A rotating bar (404) is sleeved on the sliding rod (402), and the rotating bar (404) is rotatably connected to the pushing sleeve (403); A blocking plate (405) is arranged in the discharge port (401), and the blocking plate (405) is assembled on the side end of the rotating bar (404) through a vertical rod; A spiral groove (406) is provided on the outer side surface of the slide bar (402) near the bottom end, and the rotating bar (404) is capable of rotating 180 degrees when contacting the spiral groove (406).

2. A dewatering device for sludge treatment according to claim 1, characterized in that: A collecting bucket (307) is installed inside the water collecting box (300) at a position relative to the nozzle (306) for collecting the blockages cleared from the filter tape (301).

3. A dewatering device for sludge treatment according to claim 1, characterized in that: A plurality of spacers are arranged inside the discharge port (401), and a plurality of plugging pads adapted to the spacers are arranged on the top of the plugging plate (405).

4. A dewatering device for sludge treatment according to claim 1, characterized in that: The extrusion member comprises a driving member 5, the conveying end of the driving member 5 is equipped with an extrusion plate (2), and the extrusion plate (2) is arranged in the dehydration box (1).

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