Sludge fiber cutting treatment device and sludge dewatering and feeding system

Abstract

The utility model relates to a sludge fiber cutting treatment device and a sludge dewatering and feeding system. Wherein the sludge fiber cutting treatment device comprises a sludge filter, a material returning mechanism and a cutting mechanism, the sludge filter is vertically arranged, a cylindrical filter element body and a sludge lifting assembly are arranged in the sludge filter, the cylindrical filter element body is divided into an inner space and an outer space in the sludge filter, and the sludge lifting assembly is arranged in the inner space; a lifting driving motor arranged outside the sludge filter drives the sludge lifting assembly to work, the sludge inlet pipeline is communicated with the inner space of the sludge filter, a sludge pump is arranged in the sludge outlet pipeline and communicated with the outer space of the sludge filter, and the material returning mechanism is arranged on the upper portion of the sludge filter and communicated with the side wall of the sludge filter. The cutting mechanism is arranged below the material returning mechanism and communicated with the material returning mechanism, and the bottom of the cutting mechanism extends out of a backflow pipe to be communicated with the sludge inlet pipeline. The device is good in cutting effect and capable of avoiding blockage of follow-up process equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to sludge treatment technical field especially, relates to a kind of sludge fiber cutting treatment device and sludge dewatering system of using the sludge fiber cutting treatment device. BACKGROUND

[0002] In the sludge treatment process, if the fiber mixed in the sludge is not removed, the process equipment will be easily blocked by the fiber winding, causing production interruption. Therefore, in the existing sludge treatment process, a fiber cutting machine is installed to cut the fiber in the sludge. However, the fiber cutting machine in the existing process is affected by the flow rate, water content and fiber type of the sludge during operation, and the actual cutting often fails to meet the requirements of the production process. Moreover, since the sludge is passed through the fiber cutting machine in full amount, the cutting edge is further worn out, reducing the cutting effect.

[0003] In the subsequent sludge drying process, chemical agents such as solidifying agents are added for drying treatment of the sludge. If the cutting effect of the fiber in the sludge does not meet the process requirements, the sludge mixed with large-volume fiber will produce blocky particles after the addition of the solidifying agent, causing blockage of the subsequent equipment. SUMMARY

[0004] To solve the above technical problems, the utility model provides a sludge fiber cutting treatment device with good cutting effect and capable of avoiding blockage of subsequent process equipment.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model provides a sludge fiber cutting treatment device, which comprises a sludge filter, a sludge inlet pipeline, a sludge outlet pipeline, a material return mechanism and a cutting mechanism. The sludge filter is vertically erected and internally provided with a cylindrical filter core and a sludge lifting assembly. The cylindrical filter core divides the sludge filter into an inner space and an outer space. The sludge lifting assembly is arranged in the inner space and can lift the sludge in the inner space upward. A lifting drive motor arranged outside the sludge filter drives the sludge lifting assembly to work. The sludge inlet pipeline is in communication with the inner space of the sludge filter. The sludge outlet pipeline is provided with a sludge pump and in communication with the outer space of the sludge filter. The material return mechanism is arranged at the upper part of the sludge filter and in communication with the side wall of the sludge filter through horizontal lateral movement. The cutting mechanism is arranged below the material return mechanism and in communication with the material return mechanism through horizontal lateral cutting of the fiber in the sludge. The bottom of the cutting mechanism extends a return pipeline in communication with the sludge inlet pipeline.

[0007] Preferably, the cylindrical filter core is made of a plurality of wedge-shaped grids arranged equidistantly in a ring direction and welded together, and the filter gap between two adjacent wedge-shaped grids gradually increases from the inner space to the outer space.

[0008] Preferably, the sludge filter comprises a filter housing, an inner space of the filter housing is divided into a sludge storage area, a containing area and a sludge inlet area from high to low along the height direction, the return material mechanism is communicated with the sludge storage area, the cylindrical filter core is arranged in the containing area, the sludge inlet pipeline is communicated with the sludge inlet area, and the sludge lifting assembly is communicated with the sludge storage area, the containing area and the sludge inlet area.

[0009] Preferably, the sludge lifting assembly comprises a lifting screw and a connecting shaft, the lifting screw is coaxially arranged in the containing area and penetrates into the sludge inlet area, the connecting shaft is arranged in the sludge storage area and is provided with stirring impellers on the outer peripheral surface, and one end of the connecting shaft is axially connected with the lower lifting screw, and the other end penetrates out of the sludge storage area and is axially connected with the driving shaft of the upper lifting driving motor.

[0010] Preferably, the return material mechanism comprises a return material housing, a feeding screw and a feeding driving motor, one end of the return material housing in the length direction is communicated with the sludge filter, the other end is communicated with the cutting mechanism, the feeding screw is horizontally arranged in the return material housing, and the feeding driving motor is arranged outside the return material housing and is axially connected with the feeding screw through a driving shaft.

[0011] Preferably, the feeding screw is arranged close to the inner cylinder wall of the return material housing, and a humidifying pipe is connected to the middle position of the return material housing and communicated with the outlet of the sludge pump on the sludge outlet pipeline.

[0012] Preferably, the cutting mechanism comprises a cutting housing, a cutting shaft and a cutting driving motor, one end of the cutting housing in the length direction is communicated with the return material mechanism, the other end is communicated with the sludge inlet pipeline, the cutting shaft is horizontally arranged in the cutting housing, a plurality of cutting blade groups are arranged on the cutting shaft at intervals away from the fan wheel, and the cutting driving motor is arranged outside the cutting housing and is axially connected with the cutting shaft through a driving shaft.

[0013] Preferably, the cutting blade group comprises a fixed blade and a movable blade, the fixed blade is arranged on the cutting shaft and is fixedly connected with the inner cylinder wall of the cutting housing, a plurality of through holes for sludge passing through are arranged on the fixed blade, the movable blade is arranged on the cutting shaft, a plurality of movable blades on the movable blade are elastically abutted with one side surface of the fixed blade, and each movable blade can cooperate with the through hole to perform shearing action in the rotation process of the movable blade.

[0014] Preferably, an even number of through holes for sludge passing through are equidistantly arranged on the fixed blade in a ring direction.

[0015] The utility model also provides a sludge dewatering sludge inlet system, adopt any one of above sludge fiber cutting treatment device, sludge inlet pipeline and front end conveying sludge's self flow pipeline intercommunication, sludge outlet pipeline and the import of next process equipment intercommunication.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The sludge fiber cutting treatment device of the utility model in use, sludge enters the inner space of sludge filter from sludge inlet pipeline, the part of sludge that can enter the outer space through cylindrical filter core body is directly discharged from sludge outlet pipeline under the suction of sludge pump, and the sludge that cannot smoothly enter the outer space due to the influence of bulky fiber is lifted upwards into the return mechanism under the action of sludge lifting assembly and is horizontally transported to the cutting mechanism by the return mechanism, the fiber in sludge is cut by the cutting mechanism, then the sludge after cutting treatment is recombined into sludge inlet pipeline through the return pipe, and the sludge is again entered into sludge filter, and the sludge that cannot enter the outer space is continuously entered into the cutting mechanism for fiber cutting until being discharged from sludge outlet pipeline.

[0018] Obviously, the sludge fiber cutting treatment device of the utility model can avoid the blockage of subsequent process equipment while ensuring the cutting effect by repeatedly filtering and cutting sludge.

[0019] And the sludge dewatering sludge inlet system of the utility model adopts the above-mentioned sludge fiber cutting treatment device, eliminates the defects of the original fiber cutting machine, and avoids the blockage of subsequent equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of sludge fiber cutting treatment device in the embodiment of the utility model.

[0021] Figure 2 It is the front view of sludge fiber cutting treatment device in the embodiment of the utility model.

[0022] Figure 3 It is the cut structure schematic diagram of sludge filter on sludge fiber cutting treatment device in the embodiment of the utility model.

[0023] Figure 4 It is the cut structure schematic diagram of return mechanism on sludge fiber cutting treatment device in the embodiment of the utility model.

[0024] Figure 5 It is the cut structure schematic diagram of cutting mechanism on sludge fiber cutting treatment device in the embodiment of the utility model.

[0025] Figure 6It is the cutting mechanism on the sludge fiber cutting treatment device in the embodiment of the utility model, the structure schematic diagram after removing the cutting shell.

[0026] Among them, the sign explanation is as follows:

[0027] 1, sludge filter 4, return material mechanism

[0028] 11, cylindrical filter core body 41, return material shell

[0029] 12, sludge lifting assembly 42, feeding screw rod

[0030] 121, lifting screw rod 43, feeding driving motor

[0031] 122, connecting shaft 5, cutting mechanism

[0032] 123, stirring impeller 51, cutting shell

[0033] 13, lifting driving motor 52, cutting shaft

[0034] 14, filter shell 53, cutting driving motor

[0035] 141, sludge storage area 54, cutting blade group

[0036] 142, containing area 541, fixed blade

[0037] 143, sludge inlet area 542, moving blade

[0038] 2, sludge inlet pipeline 6, return pipeline

[0039] 3, sludge outlet pipeline 7, humidification pipe DETAILED DESCRIPTION

[0040] The specific embodiments of the utility model are further described in detail below in combination with the drawings. These embodiments are only used for describing the utility model, and not for limiting the utility model.

[0041] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The device or element indicated must have a particular orientation, a particular orientation and operation, so it cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the utility model, it is necessary to explain, unless otherwise definite and limited, the term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integral type connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication.

[0043] In addition, in the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more than two.

[0044] Refer to Figures 1 to 3 , this embodiment provides a kind of sludge fiber cutting treatment device, including sludge filter 1, into sludge pipeline 2, sludge pipeline 3, back material mechanism 4 and cutting mechanism 5, sludge filter 1 is vertically set up and is internally provided with cylindrical filter core body 11 and sludge lifting assembly 12, cylindrical filter core body 11 is separated into inner space and outer space in sludge filter 1, sludge lifting assembly 12 is arranged in inner space and can drive sludge in inner space to lift upwards, lifting drive motor 13 is arranged outside sludge filter 1 and drives sludge lifting assembly 12 to work, into sludge pipeline 2 is communicated with the inner space of sludge filter 1, sludge pump is arranged in sludge pipeline 3 and is communicated with the outer space of sludge filter 1, back material mechanism 4 is arranged in the upper portion of sludge filter 1, and back material mechanism 4 can drive sludge to be communicated with the side wall of sludge filter 1 with horizontal transverse movement, cutting mechanism 5 is arranged below back material mechanism 4, and cutting mechanism 5 can be communicated with back material mechanism 4 with horizontal transverse cutting fiber in sludge, the bottom of cutting mechanism 5 extends backflow pipe 6 and is communicated with into sludge pipeline 2.

[0045] The sludge fiber cutting treatment device of this embodiment is used, sludge enters the inner space of sludge filter 1 from into sludge pipeline 2, the part of sludge that can enter outer space by cylindrical filter core body 11 is directly discharged from sludge pipeline 3 under the suction of sludge pump, and the sludge that cannot enter outer space due to the influence of bulky fiber is lifted upwards into back material mechanism 4 under the action of sludge lifting assembly 12, and is transported to cutting mechanism 5 by back material mechanism 4, and the fiber in sludge is cut by cutting mechanism 5, and then the sludge after cutting treatment is recombined into into sludge pipeline 2 by backflow pipe 6, and the sludge is reentered into sludge filter 1, and the sludge that cannot enter outer space is continuously entered into cutting mechanism 5 to cut fiber, until it is discharged from sludge pipeline 3.

[0046] Obviously, the sludge fiber cutting treatment device of this embodiment can avoid subsequent process equipment blockage while ensuring cutting effect by repeatedly filtering and cutting sludge.

[0047] Preferably, the cylindrical filter core 11 is made by welding a plurality of wedge-shaped grid bars arranged equidistantly in a ring direction, and the filter gap between two adjacent wedge-shaped grid bars gradually increases from the inner space to the outer space, so as to avoid the blockage of sludge with fiber at the filter gap.

[0048] Preferably, referring to Figure 3 , the sludge filter 1 comprises a filter housing 14, the inner space of the filter housing 14 is divided into a sludge storage area 141, a containing area 142 and a sludge inlet area 143 from high to low in the height direction, the return material mechanism 4 communicates with the sludge storage area 141, the cylindrical filter core 11 is arranged in the containing area 142, the sludge inlet pipeline 2 communicates with the sludge inlet area 143, and the sludge lifting assembly 12 simultaneously communicates the sludge storage area 141, the containing area 142 and the sludge inlet area 143.

[0049] Referring to Figures 1 to 3 , in operation, the sludge first enters the lower sludge inlet area 143 from the sludge inlet pipeline 2, and is lifted to the containing area 142 by the sludge lifting assembly 12, part of the sludge directly flows from the inner space to the outer space of the cylindrical filter core 11, and the remaining sludge which cannot pass through the cylindrical filter core 11 continues to be lifted to the sludge storage area 141 by the sludge lifting assembly 12, and the sludge in the sludge storage area 141 enters the return material mechanism 4 under the extrusion action and is transported to the cutting mechanism 5 by the return material mechanism 4.

[0050] Preferably, referring to Figure 3 , the sludge lifting assembly 12 comprises a lifting screw 121 and a connecting shaft 122, the lifting screw 121 is coaxially arranged with the cylindrical filter core 11 in the containing area 142 and penetrates into the sludge inlet area 143, the connecting shaft 122 is arranged in the sludge storage area 141 and is provided with stirring impellers 123 on the outer circumferential surface, and one end of the connecting shaft 122 is axially connected with the lower lifting screw 121, and the other end penetrates out of the sludge storage area 141 and is axially connected with the driving shaft of the upper lifting driving motor 13.

[0051] In operation, the lifting driving motor 13 drives the lifting screw 121 and the connecting shaft 122 to rotate synchronously, and the sludge in the sludge filter 1 can be gradually lifted upward along the spiral on the lifting screw 121, and the sludge entering the sludge storage area 141 will also enter the return material mechanism 4 at a faster speed under the driving of the stirring impellers 123.

[0052] Preferably, in the embodiment, the sludge filter 1 is made of stainless steel material as a whole.

[0053] Preferably, referring to Figure 4The return mechanism 4 includes a return housing 41, a feeding screw rod 42 and a feeding driving motor 43. One end of the return housing 41 in the length direction is communicated with the sludge filter 1, and the other end is communicated with the cutting mechanism 5. The feeding screw rod 42 is horizontally and transversely arranged in the return housing 41. The feeding driving motor 43 is arranged outside the return housing 41 and is axially connected with the feeding screw rod 42 through a driving shaft. The return mechanism 4 can drive the feeding screw rod 42 to rotate through the feeding driving motor 43, so as to mechanically transfer the sludge not passing through the cylindrical filter core 11 into the cutting mechanism 5.

[0054] Preferably, referring to Figure 1 , Figure 2 and Figure 4 , the feeding screw rod 42 is arranged against the inner cylinder wall of the return housing 41. A humidifying pipe 7 is connected to the middle position of the return housing 41. The humidifying pipe 7 is communicated with the outlet of the sludge pump on the sludge outlet pipe 3.

[0055] Since the outlet of the cutting mechanism 5 is communicated with the sludge inlet pipe 2 through the return pipe 6, and the feeding screw rod 42 is arranged against the inner cylinder wall of the return housing 41, the sealing requirement can be met as much as possible without affecting the rotation of the feeding screw rod 42. In addition, the sludge entering the return housing 41 causes the sludge filter 1 and the cutting mechanism 5 to be pressure-isolated, so as to ensure that the sludge in the cutting mechanism 5 can flow under the negative pressure suction of the sludge pump.

[0056] Meanwhile, since the water content of the sludge not passing through the cylindrical filter core 11 is greatly reduced when the sludge is lifted to the top of the sludge filter 1, the flowability of the sludge in the return mechanism 4 is poor. However, the humidifying pipe 7 can transport the filtered sludge with high water content in the sludge outlet pipe 3 into the return mechanism 4 through the sludge pump, so as to dilute the sludge in the return mechanism 4. This not only increases the flowability of the sludge in the return housing 41, but also improves the sealing between the feeding screw rod 42 and the return housing 41.

[0057] Preferably, in the embodiment, the return mechanism 4 is made of stainless steel.

[0058] Preferably, referring to Figure 5 , the cutting mechanism 5 includes a cutting housing 51, a cutting shaft 52 and a cutting driving motor 53. One end of the cutting housing 51 in the length direction is communicated with the return mechanism 4, and the other end is communicated with the sludge inlet pipe 2. The cutting shaft 52 is horizontally and transversely arranged in the cutting housing 51. A plurality of cutting blade groups 54 are arranged at intervals in the direction away from the fan wheel, which is installed on one side of the cutting shaft 52 close to the return mechanism 4. The cutting driving motor 53 is arranged outside the cutting housing 51 and is axially connected with the cutting shaft 52 through a driving shaft.

[0059] In the process of flowing to the outlet direction under the pressure of the sludge entering the cutting mechanism 5 from the upper material return mechanism 4, the cutting driving motor 53 can drive the fan wheel to rotate synchronously by driving the cutting shaft 52 to rotate, which can increase the flowability of the sludge and indirectly crush the sludge blocks, and then the multiple cutting blade groups 54 can perform multiple edge shearing on the fiber materials in the sludge, and finally the cut sludge is recombined into the sludge pipeline 2 through the return pipe 6.

[0060] Preferably, referring to Figure 5 In the embodiment, the cutting shaft 52 is provided with two cutting blade groups 54 in the direction away from the fan wheel.

[0061] Preferably, referring to Figure 5 and Figure 6 The cutting blade group 54 includes a fixed blade 541 and a moving blade 542, the fixed blade 541 is arranged on the cutting shaft 52 and fixedly connected with the inner cylinder wall of the cutting shell 51, and multiple through holes for the sludge to pass through are arranged on the fixed blade 541, the moving blade 542 is arranged on the cutting shaft 52, and multiple movable blades on the moving blade 542 elastically abut against one side of the fixed blade 541, and each movable blade can cooperate with the through hole to perform a shearing action in the process of rotating the moving blade 542. When the cutting driving motor 53 drives the cutting shaft 52 to rotate, the moving blade 542 will rotate synchronously with the cutting shaft 52 and continuously cooperate with the multiple through holes on the fixed blade 541 to perform a shearing action, so as to perform edge shearing on the fiber materials of the sludge flowing through the through holes.

[0062] Preferably, in the embodiment, the movable blades on the moving blade 542 elastically abut against the fixed blade 541 through the compression spring.

[0063] Preferably, an even number of through holes for the sludge to pass through are arranged on the fixed blade 541 in the circumferential direction and at equal intervals, so as to eliminate the peak value of the shearing load and balance the load.

[0064] The embodiment also provides a sludge dewatering and feeding system, which adopts the sludge fiber cutting treatment device, the sludge pipeline 2 is in communication with the self-flowing pipeline for conveying the sludge at the front end, and the sludge pipeline 3 is in communication with the inlet of the subsequent equipment. The sludge dewatering and feeding system of the embodiment eliminates the defects of the original fiber cutting machine and avoids blocking the subsequent equipment by adopting the sludge fiber cutting treatment device.

[0065] Preferably, in the embodiment, the inner and outer diameters of the sludge pipeline 2 are matched with the inner and outer diameters of the self-flowing pipeline.

[0066] The above merely is the preferred implementation form of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application.

Claims

1. A sludge fiber cutting treatment device characterized by, The sewage sludge filter (1) is vertically arranged and internally provided with a cylindrical filter core (11) and a sludge lifting assembly (12), the cylindrical filter core (11) divides an inner space and an outer space in the sewage sludge filter (1), the sludge lifting assembly (12) is arranged in the inner space and can lift the sludge in the inner space upward, a lifting drive motor (13) arranged outside the sewage sludge filter (1) drives the sludge lifting assembly (12) to work, the sludge inlet pipeline (2) is communicated with the inner space of the sewage sludge filter (1), the sludge outlet pipeline (3) is internally provided with a sludge pump and is communicated with the outer space of the sewage sludge filter (1), the material returning mechanism (4) is arranged at the upper portion of the sewage sludge filter (1), and the material returning mechanism (4) is communicated with the side wall of the sewage sludge filter (1) and can horizontally and laterally move the sludge, the cutting mechanism (5) is arranged below the material returning mechanism (4), and the cutting mechanism (5) is communicated with the material returning mechanism (4) and can horizontally and laterally cut the fiber in the sludge, and the bottom of the cutting mechanism (5) extends out a return pipeline (6) and is communicated with the sludge inlet pipeline (2).

2. The sludge fiber cutting treatment apparatus according to claim 1, wherein The cylindrical filter core (11) is composed of a plurality of wedge-shaped grid bars arranged in a ring direction and at equal intervals, and the filter gap between the adjacent two wedge-shaped grid bars gradually increases from the inner space to the outer space.

3. The sludge fiber cutting treatment apparatus according to claim 1, wherein The sewage sludge filter (1) comprises a filter shell (14), the inner space of the filter shell (14) is divided into a sludge storage area (141), a containing area (142) and a sludge inlet area (143) from high to low along the height direction, the material returning mechanism (4) is communicated with the sludge storage area (141), the cylindrical filter core (11) is arranged in the containing area (142), the sludge inlet pipeline (2) is communicated with the sludge inlet area (143), and the sludge lifting assembly (12) is simultaneously communicated with the sludge storage area (141), the containing area (142) and the sludge inlet area (143).

4. The sludge fiber cutting treatment device according to claim 3, characterized by, The sludge lifting assembly (12) comprises a lifting screw rod (121) and a connecting shaft (122), the lifting screw rod (121) is coaxially arranged with the cylindrical filter core (11) in the containing area (142) and penetrates into the sludge inlet area (143), the connecting shaft (122) is arranged in the sludge storage area (141) and is provided with stirring impellers (123) on the outer circumferential surface, one end of the connecting shaft (122) is axially connected with the lifting screw rod (121) below, and the other end penetrates out of the sludge storage area (141) and is axially connected with the driving shaft of the lifting drive motor (13) above.

5. The sludge fiber cutting treatment apparatus according to claim 1, wherein The return material mechanism (4) comprises a return material shell (41), a feeding screw rod (42) and a feeding driving motor (43), one end of the return material shell (41) is communicated with the sludge filter (1) in the length direction, the other end is communicated with the cutting mechanism (5), the feeding screw rod (42) is horizontally and transversely arranged in the return material shell (41), and the feeding driving motor (43) is arranged outside the return material shell (41) and is axially connected with the feeding screw rod (42) through a driving shaft.

6. The sludge fiber cutting treatment device according to claim 5, wherein The feeding screw rod (42) is arranged against the inner cylinder wall of the return material shell (41), and a humidifying pipe (7) is connected to the middle position of the return material shell (41), and the humidifying pipe (7) is communicated with the outlet of the sludge pump on the sludge outlet pipeline (3).

7. The sludge fiber cutting treatment apparatus according to claim 1, wherein The cutting mechanism (5) comprises a cutting shell (51), a cutting shaft (52) and a cutting driving motor (53), one end of the cutting shell (51) is communicated with the return material mechanism (4) in the length direction, the other end is communicated with the sludge inlet pipeline (2), the cutting shaft (52) is horizontally and transversely arranged in the cutting shell (51), a plurality of cutting blade groups (54) are arranged on the cutting shaft (52) in the direction away from the fan wheel, and the cutting driving motor (53) is arranged outside the cutting shell (51) and is axially connected with the cutting shaft (52) through a driving shaft.

8. The sludge fiber cutting treatment apparatus according to claim 7, wherein The cutting blade group (54) comprises a fixed blade (541) and a movable blade (542), the fixed blade (541) is arranged on the cutting shaft (52) and is fixedly connected with the inner cylinder wall of the cutting shell (51), a plurality of through holes for sludge passing through are formed in the fixed blade (541), the movable blade (542) is arranged on the cutting shaft (52), and a plurality of movable blades on the movable blade (542) are elastically abutted against one side surface of the fixed blade (541), and each movable blade can cooperate with the through hole to perform a shearing action during the rotation of the movable blade (542).

9. The sludge fiber cutting treatment apparatus according to claim 8, wherein An even number of through holes for sludge passing through are circumferentially and equally spaced on the fixed blade (541).

10. A sludge dewatering in-feed system characterized by, The sludge fiber cutting treatment device comprises the sludge fiber cutting treatment device according to any one of claims 1-9, the sludge inlet pipeline (2) is communicated with a self-flowing pipeline for conveying sludge at the front end, and the sludge outlet pipeline (3) is communicated with the inlet of a next process equipment.

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