CN216879648U

CN216879648U - Sewage lifting equipment is with pulper

Info

Publication number: CN216879648U
Application number: CN202123091355.0U
Authority: CN
Inventors: 乔晓东; 魏立功; 王亚敏
Original assignee: Tianjin Jinchuangda Technology Development Co ltd; China Railway Design Corp
Current assignee: Tianjin Jinchuangda Technology Development Co ltd; China Railway Design Corp
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-07-05
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a pulper for sewage lifting equipment, and belongs to the field of sewage physical treatment devices. The utility model comprises a movable cutter roller and a case shell with fixed cutters on the inner wall, wherein end shafts which are rotatably connected with the case shell are connected with two ends of the movable cutter roller, one end of each fixed cutter is provided with a plurality of fixed cutter blades, the other end of each fixed cutter blade is fixed on the inner wall of the case shell, each movable cutter on the movable cutter roller is provided with a plurality of movable cutter blades, the intersection point of the movable cutter blades forms a movable cutter point which protrudes towards the rotating direction, the movable cutter blades and the movable cutter point pass through the fixed cutter blades in the rotating process, and the movable cutters and the fixed cutters are matched to particularly effectively crush soft and tough substances in sewage. The utility model is matched with a specially designed screen to be fully crushed, and the effect that solid garbage and sewage can be discharged together through the sewage pump without blocking the sewage pump is achieved. Meanwhile, the machine case, the cutter and the main shaft are designed, so that the whole machine case is small in size, light in weight and convenient to install and maintain.

Description

Sewage lifting equipment is with pulper

Technical Field

The utility model belongs to the field of sewage physical treatment devices, and particularly relates to a pulper for sewage lifting equipment.

Background

The crusher of the sewage lifting device is widely applied to sewage lifting devices of domestic sewage, such as residential districts, airports, railway stations, bus stations, hospitals, villages, cultures, villages and towns, office buildings, markets, hotels, restaurants, sanatoriums, institutions, schools, highways, railways, factories, mines, tourist attractions and the like, and small and medium-scale industrial organic wastewater, such as slaughter, aquatic product processing, food and the like. The installation position is generally underground in the above scene, and the installation and use space is usually narrow. Consequently receive its mounted position and installation usage space's influence, the used rubbing crusher volume of sewage lifting means is difficult too big, and weight can not be overweight, will be convenient for install and later maintenance, maintenance. The weight and the volume of the crusher used by the existing sewage lifting equipment are overlarge, and the crusher is influenced by the limitation of the internal space of the sewage lifting equipment, is not beneficial to installation and later-stage maintenance, and influences are caused to the use of the internal space of the sewage lifting equipment.

The crusher used by the existing sewage lifting equipment is complex in structure, and the crushed size of the crusher is too large for soft and strong-toughness substances in sewage, so that a sewage pump is easily blocked and damaged, and the equipment maintenance and repair cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model is provided for overcoming the defects in the prior art, and aims to provide a pulper for sewage lifting equipment.

The utility model is realized by the following technical scheme:

the utility model provides a sewage lifting means is with pulper, is provided with the chassis exterior of stationary knife including moving rotor and inner wall, the both ends of moving the rotor are connected with rotates the end shaft of being connected with chassis exterior, the one end of stationary knife is provided with the inner wall that a plurality of stationary knife cutting edge other ends are fixed in chassis exterior, each piece of sword that moves on the rotor is equipped with a plurality of and moves the sword cutting edge, move the crossing point of sword cutting edge and form to the bellied sword knife tip that moves of direction of rotation, at the pivoted process move the sword cutting edge and move the sword knife tip and pass through between the stationary knife cutting edge.

In the above technical scheme, chassis exterior and move the sword roller and be detachable structure, chassis exterior includes concatenation formula case frame and installs in the front bezel that is equipped with convex sewage entry of case frame one side opening part, the end shaft peg graft in set up in move the deep trouth at sword roller's both ends.

In the technical scheme, the fixed knife comprises a fixed knife blade and a strip-shaped fixed knife rest, wherein the fixed knife blade is provided with fixed knife edges arranged in a zigzag manner, and fixed knife mounting holes and fixed knife rest mounting holes which are arranged in a staggered manner are formed in two adjacent side surfaces of the strip-shaped fixed knife rest.

In the above technical scheme, the box frame is further provided with a fixed knife adjusting hole located beside the fixed knife rest mounting groove, and the fixed knife adjusting hole is located at the joint of the fixed knife blade and the box frame.

In the technical scheme, the movable knife comprises a movable knife fixing frame and movable knife blades, the movable knife blades are square blades, protruding movable knife points are formed at four corners of one side face of each square blade, and movable knife edges are formed at edges between the movable knife points.

In the technical scheme, one side of each of the four corners of the movable knife edge is a cutting side of the movable knife, and the cutting side forms an arc-shaped recess towards the center by the movable knife edge and the movable knife blade edge.

In the technical scheme, the moving knife roll is provided with moving knife mounting grooves which are arranged in rows and staggered between different rows so as to install moving knives, the moving knife mounting grooves comprise moving knife rest mounting grooves and operating grooves which are connected, and one side of the moving knife rest mounting grooves, which faces the direction in which the knife tips of the moving knives point, in the back of the back is communicated with the operating grooves.

In the technical scheme, one side of the movable knife fixing frame is connected with the bottom of a movable knife fixing groove arranged on the movable knife roller, a V-shaped clamping groove and a supporting back plate are arranged on the other side of the movable knife fixing frame to install the movable knife blade, a plane is formed at the top end of the supporting back plate to expose the tip of the movable knife blade, and a protection groove is formed at the bottom of the V-shaped clamping groove to place the tip of the movable knife blade facing the movable knife fixing frame.

In the technical scheme, the movable knife roller is hollow.

In the technical scheme, the novel machine case comprises an arc-shaped screen, wherein the concave side of the screen faces to the movable knife roll, and two opposite raised edges of the concave side of the arc-shaped screen are connected with the inner side of the case shell.

The utility model has the beneficial effects that:

according to the utility model, the arc-shaped cutting side and the outwards-protruded tool tip of the movable tool are matched with the saw-toothed fixed tool cutting edges, so that the crushing effect on soft and tough substances in sewage can be improved.

On the basis, in order to further enhance the crushing efficiency and effect, the utility model increases the cutting surface area of the movable knife, increases the thicknesses of the movable knife and the movable knife holder to provide enough movable knife stability and form more movable knife blades, and on the basis, the hollow movable knife roller reduces the weight and the load of a power motor under the condition of providing enough surface area, and the rotating speed can reach about 600 revolutions per minute, so that the crushing effect and the crushing efficiency of the hollow movable knife roller on solid matters in sewage can be improved.

Meanwhile, the left side plate and the right side plate of the box frame adopt steps, the slotting and bolt connection design is adopted, and the fixed cutter support is arranged in the side plate groove body, so that the installation precision of the fixed cutter support is ensured, and the firmness of the installation of the fixed cutter support is increased. Therefore, the fixed knife and the movable knife can be matched more stably and effectively.

Furthermore, all parts of the box frame and the main shaft are connected by adopting steps, grooves and bolts, welding is not needed, the installation and the maintenance are convenient, and only independent parts can be dismounted for maintenance as required, so that the box frame and the main shaft are suitable for various field environments.

The utility model relates to a novel design of a special crusher for sewage lifting equipment, which can fully crush soft and tough substances in sewage by the mutual work of a novel movable cutter and a novel fixed cutter of the crusher and the cooperation of a specially designed screen, thereby achieving the effects of discharging solid garbage and sewage together through a sewage pump and not blocking the sewage pump. The later maintenance cost of the equipment is reduced, and the use efficiency of the equipment is improved. The unique design of the machine case, the cutter and the main shaft ensures that the whole equipment has small volume, light weight and convenient installation and maintenance.

Drawings

FIG. 1 is a rear schematic view of the appearance of the present invention;

FIG. 2 is an exploded view of the enclosure housing of the present invention;

FIG. 3 is an exploded view of the structure of the movable knife roll, the end shaft, the first end plate and the second end plate in the present invention;

FIG. 4 is a schematic front view of the connection of the present invention without the side plates and the flanges;

FIG. 5 is a schematic structural diagram of the movable knife roll, the end shaft and other necessary parts arranged on the end shaft in the present invention;

FIG. 6 is a schematic sectional view of the movable cutter roller and the end shaft of the present invention;

FIG. 7 is a schematic view of the installation structure of the stationary knife and the side plate in the present invention;

FIG. 8 is a schematic view of a stationary blade holder of the present invention;

FIG. 9 is a schematic view of a moving blade in the present invention;

FIG. 10 is a schematic view of the movable blade holder of the present invention;

FIG. 11 is a schematic view of the rear view of the movable blade and the movable holder of the present invention in the installed state;

FIG. 12 is a schematic view of an embodiment of the present invention in which the screen is mounted to the side plates;

FIG. 13 is a schematic of a screen in the present invention;

fig. 14 is a schematic view of the inside of a front panel in the present invention.

Wherein:

1. a movable knife roll, 101, a deep groove,

102. a moving knife mounting groove 1021, a moving knife rest mounting groove,

1022. an operation groove, 2, a fixed knife,

201. fixed knife edge, 202, fixed knife blade,

203. a fixed cutter holder 204, a fixed cutter mounting hole,

205. a fixed cutter frame mounting hole 206, a fixed cutter adjusting hole,

3. a chassis housing, 301, a chassis frame,

3011. a first end plate, 3012, a second end plate,

3013. side plates 3014, end plate mounting slots,

3015. an end plate mounting hole 3016, a fixed cutter frame mounting groove,

3017. a flange connecting piece 3018, a hook,

302. a front plate, 3021, a sewage inlet,

3022. a step groove shaped like a Chinese character 'hui', 3023 bolt holes,

4. a moving blade 401, a moving blade edge,

402. the knife point of the moving knife is 403, the moving knife fixing frame,

4031, V-shaped card slot, 4032, support the back plate,

4033. a guard slot, 404, a moving blade,

4041. a platform, 5, a key groove,

6. a shaft seat 601, a mounting block,

7. an end shaft mounting hole, 8. a bearing seat,

9. an end cap, 10, a first step shaft,

11. a second step shaft, 12, a mechanical seal,

13. oil seal, 14. shaft end fastening gasket,

15. a shaft end fastening nut, 16, a clamp spring,

17. a front plate mounting hole, 18, a movable cutter frame mounting hole,

19. a moving blade mounting hole, 20, a screen,

2001. connecting edges, 2002, screen mounting holes,

2003. and (4) screening holes.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the drawings of the specification.

Example 1:

as shown in fig. 1, a pulper for sewage lifting equipment includes that movable knife roller 1 and inner wall are provided with chassis exterior 3 of stationary knife 2, it has the end shaft of being connected with chassis exterior 3 rotation to peg graft at movable knife roller 1 both ends, the one end of stationary knife 2 is provided with the inner wall that a plurality of stationary knife cutting edge 201 other ends are fixed in chassis exterior 3, be equipped with a plurality of moving knife cutting edge 401 on each piece of moving knife 4 on the movable knife roller 1, the crossing point of moving knife cutting edge 401 forms to the bellied moving knife tip 402 of direction of rotation, at the pivoted process moving knife cutting edge 401 and moving knife tip 402 pass through from stationary knife cutting edge 201, produce mutual cutting force and tear power to reach the mesh of smashing solid matter in the sewage. According to the utility model, the movable knife roll 1 and the case shell 3 can be detached, the matching effect of the movable knife 4 and the fixed knife 2 is good, the plurality of fixed knife blades 201 and the movable knife blades 401 work in a matching way in the rotating process, the knife points 402 of the movable knife further cut flexible substances hung on the movable knife blades, the crushing efficiency is high, and the crushing device is especially effective for the flexible and tough substances in sewage.

Further, in order to facilitate field maintenance, as shown in fig. 2, the chassis housing 3 and the movable knife roll 1 are both detachable structures, the chassis housing 3 includes a splicing type box frame 301 and a front plate 302 installed at an opening at one side of the box frame 301, and the end shaft is inserted into the deep grooves 101 formed at both ends of the movable knife roll 1.

Further, as shown in fig. 6, the movable knife roll 1 is of a hollow structure, the weight is greatly reduced, the movable knife roll can be shifted by fingers, the load of a power motor is greatly reduced, the rotating speed can reach about 600 revolutions per minute, and the crushing effect and the crushing efficiency of the movable knife roll on solid matters in sewage are improved.

The pulper for the sewage lifting equipment, which is provided by the utility model, has high crushing efficiency and excellent crushing effect, so that a sewage pump is not easy to block, and the overall performance and efficiency of the whole sewage lifting equipment are improved.

Example 2:

in embodiment 1, as shown in fig. 3 and 6, the end shaft is inserted into the deep groove 101 formed at both ends of the movable knife roller 1, the shaft seat 6 provided with the mounting block 601 is formed at the other end of the stepped shaft formed at one end of the end shaft, the deep groove 101 inserted with the mounting block 601 is formed at both ends of the movable knife roller 1, the mounting block 601 and the deep groove 101 are provided with the end shaft mounting hole 7 matched with each other, and the mounting of the end shaft and the movable knife roller 1 can be completed by using the bolt shaft mounting hole 7 after the mounting block 601 and the deep groove 101 are inserted.

As shown in fig. 1 and 2, a bearing seat 8 is arranged between the step shaft and the pulper housing 3, an end cover 9 is connected to the bearing seat 8, the step shaft includes a first step shaft 10 and a second step shaft 11, the end portions of the first step shaft 10 are provided with key grooves 5, the first step shaft 10 penetrates out of the end cover 9 to be connected with a power driving device, and the end portion of the second step shaft 11 is arranged in the end cover 9.

As shown in fig. 5, the first step shaft 10 and the second step shaft 11 are further provided with a mechanical seal 12, an oil seal 13, a shaft end fastening gasket 14, a shaft end fastening nut 15, a snap spring 16 and other parts for maintaining accurate shaft installation and stable operation.

Example 3:

in embodiment 1, as shown in fig. 2, the chassis housing 3 is a detachable structure, and includes a splicing box frame 301 and a front plate 302 installed at an opening on one side of the box frame 301. Further, the box frame 301 includes a first end plate 3011, a second end plate 3012 and a side plate 3013, an end plate mounting groove 3014 is formed on the side plate 3013, and two ends of the first end plate 3011 and the second end plate 3012 are arranged in the end plate mounting groove 3014 in parallel. Further, end plate mounting holes 3015 are formed in the end plate mounting groove 3014 and at two ends of the first end plate 3011 and the second end plate 3012, and the first end plate 3011, the second end plate 3012 and the side plate 3013 can be mounted by using bolts to match with the end plate mounting holes 3015. The end plate mounting grooves 3014 make the mounting of the cabinet frame 301 more stable and accurate, ensuring the appearance of the cabinet frame 301.

One side of the front plate 302 is provided with a convex sewage inlet 3021, the other side of the front plate 302 is provided with a reversed-square-shaped step groove 3022, the bottom of the reversed-square-shaped step groove 3022 and the corresponding ends of the first end plate 3011, the second end plate 3012 and the two side plates 3013 are provided with matched front plate mounting holes 17, the reversed-square-shaped step groove 3022 is spliced with the opening of the box frame 301 during use, and the front plate 302 and the box frame 301 are spliced by matching bolts with the front plate mounting holes 17. Furthermore, a bolt hole 3023 is also arranged at the sewage inlet 3021 to be fixed with the sewage pipeline.

Further, a hook 3018 is further installed on the first end plate 3011 to assist in fixing; and a flange connecting piece 3017 covering the outer side of the bearing seat 8 is arranged on the case shell 3 so as to be further connected with a power driving device.

All parts in chassis housing 3 in this embodiment all adopt the design that groove and bolt cooperate to connect, have guaranteed that the installation is accurate and firm, are convenient for install again and dismantle the maintenance. The mounting precision of the bearing seat 8 in the embodiment 2 can be further enhanced, and the stability of the movable knife roller 1 can be ensured.

Example 4:

in addition to embodiment 1, as shown in fig. 1, 2 and 7, the fixed blade 2 includes a fixed blade 202 having fixed blade edges 201 arranged in a zigzag manner and a long fixed blade holder 203, as shown in fig. 8, two adjacent side surfaces of the long fixed blade holder 203 are provided with a fixed blade mounting hole 204 and a fixed blade holder mounting hole 205, and the fixed blade 202 is provided with a fixed blade mounting hole 204 for mounting. The fixed blade holder 203 is installed in a fixed blade holder installation groove 3016 provided on the side plate, and the fixed blade holder installation groove 3016 is provided perpendicular to the end plate installation groove 3014. The bottom of the fixed cutter frame mounting groove 3016 is also provided with a fixed cutter frame mounting hole 205, and the fixed cutter frame 203 can be mounted by matching the fixed cutter frame mounting hole 205 with a bolt.

The side plate 3013 is further provided with a fixed blade adjusting hole 206 located beside the fixed blade frame mounting groove 3016, and the fixed blade adjusting hole 206 is located at a joint of the fixed blade 202 and the side plate 3013. Further, by screwing the bolt into the fixed blade adjusting hole 206 and adjusting the length of the bolt exposed from the inner side of the side plate 3013, the distance between the fixed blade 202 and the movable blade roller 1 can be adjusted to obtain the best crushing effect.

When the tool is used, the bolt in the fixed tool rest mounting hole 205 can be loosened, the bolt in the fixed tool adjusting hole 206 is adjusted, and then the bolt in the fixed tool rest mounting hole 205 is screwed again.

Example 5:

on the basis of embodiment 1, as shown in fig. 9 to 11, the movable knife 4 includes a movable knife holder 403 and a movable knife blade 404, the movable knife blade 404 is a square blade in which four corners of one side face form a convex movable knife edge 402, and the edge between the movable knife edge 402 forms a movable knife edge 401. One side of each of the four corners of the movable knife edge 402 is a cutting side of the movable knife, the cutting side is formed into an arc-shaped recess from the movable knife edge 402 and the movable knife blade 401 to the center, and further the movable knife blade 401 is also arc-shaped. The movable knife blade 404 of the present invention has four movable knife points 402 and movable knife edges 401, and in use, the diagonal line on the cutting surface is used as a boundary, wherein two movable knife edges 401 and one movable knife point 402 are exposed out of the movable knife roller 1. When the movable knife point 402 or the movable knife edge 401 is worn, the installation direction of the movable knife blade 404 can be changed, and the spare movable knife point 402 or the spare movable knife edge 401 can be used continuously; meanwhile, the design of the movable knife blade 404 of the square blade makes the contact surface between the movable knife blade 404 and the movable knife fixing frame 403 larger, so that the installation is firmer and the shock resistance is stronger. Furthermore, the movable blade of the utility model is made of high wear-resistant and high-strength alloy steel, such as SKD11 die steel, and has the characteristics of high hardness and good wear resistance.

As shown in fig. 3 to 5, the movable knife roll 1 is provided with movable knife mounting grooves 102 arranged in rows and staggered between different rows to mount the movable knife 4, the movable knife mounting grooves 102 include a movable knife rest mounting groove 1021 and an operating groove 1022 connected, the operating groove 1022 communicates with one side of the movable knife rest mounting groove 1021 opposite to the direction of the movable knife tip 402, and when the movable knife holder 401 is fixed in the movable knife rest mounting groove 1021, the movable knife 404 and the movable knife holder 403 can be dismounted through the operating groove 1022.

Further, one side of the movable knife holder 403 is connected to the bottom of the movable knife holder mounting groove 1021 on the movable knife roller 1, the other side is provided with a V-shaped clamping groove 4031 and a support back plate 4032 for mounting the movable knife blade 404, and the top end of the support back plate 4032 forms a plane to expose the movable knife tip 402. The V-shaped clamping groove 4031 is provided with a movable tool holder mounting hole 18 for fitting a bolt to be mounted in the movable tool holder mounting groove 1021.

Further, for convenience of installation, as shown in fig. 9, a raised platform 4041 is formed in the center of the movable blade 404, and the movable blade 404 and the movable blade holder 401 can be fixed by matching bolts through the movable blade mounting holes 19 arranged in the centers of the platform 4041 and the support back 4032.

Further, in order to prevent the movable blade tip 402 from rubbing against the V-shaped clamping groove 4031, as shown in fig. 10, a protection groove 4033 is formed at the bottom of the V-shaped clamping groove 4031 to place the movable blade tip 402 facing the movable blade holder 403.

Example 6:

in addition to the above embodiments, the present invention further includes an arc-shaped screen 20, as shown in fig. 12 and 13, a concave side of the screen 20 faces the moving knife roll 1, and two raised edges of the concave side of the arc-shaped screen 20 are opposite to each other to form a connecting edge 2001 to be connected to the inner side of the chassis housing 3. That is, the connecting edge 2001 and the inner side of the casing 3 are provided with matched screen mounting holes 2002, and the screen 20 can be quickly fixed and mounted by matching with bolts.

The screen 20 and the movable knife point 402 keep a certain distance, circular screen holes 2003 are arrayed on the screen 20, the diameter of each screen hole 2003 is 20mm, 25mm, 30mm or 35mm, and the screen holes 2003 can be selected according to the caliber of a sewage pump in actual use. When the caliber of the sewage pump is not daily used, the size of the sieve pore 20 can be re-set according to actual conditions.

The screen 20 can lead the solid matters which are not completely crushed to enter the space between the fixed knife 2 and the movable knife 4 of the pulper for crushing even more times until the volume of the fragments reaches the requirement. The mesh 20 of a suitable size allows the crushed material to flow out smoothly without clogging the sewage pump. The existing pulper of the sewage lifting treatment equipment is usually provided with no screen or the screen is unreasonable in design, and the screen 20 is a special screen designed for the pulper of the sewage lifting equipment.

On the basis, in order to further enhance the crushing efficiency and effect, the utility model increases the area of the cutting surface of the movable knife, increases the thicknesses of the movable knife blade and the movable knife blade seat so as to provide enough stability of the movable knife and form more blades of the movable knife; the hollow movable knife roller provides enough surface area to accommodate enough thickened movable knives, reduces weight, reduces load of a power motor, and can rotate at a speed of about 600 revolutions per minute, so that the crushing effect and the crushing efficiency of the hollow movable knife roller on solid matters in sewage are improved.

Furthermore, all parts of the box frame and the main shaft are connected by adopting steps, grooves and bolts, welding is not needed, the installation and the maintenance are convenient, only part of parts can be dismounted for maintenance as required, and the box frame and the main shaft are suitable for various field environments.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.

Claims

1. The utility model provides a sewage is pulper for lifting means, is provided with chassis exterior (3) of stationary knife (2) including moving rotor (1) and inner wall, its characterized in that: move the both ends of rotor (1) and be connected with the dead axle of being connected with chassis exterior (3) rotation, the one end of stationary knife (2) is provided with the inner wall that a plurality of stationary knife cutting edge (201) other ends are fixed in chassis exterior (3), move each piece on rotor (1) and move sword (4) and be equipped with a plurality of and move sword cutting edge (401), move the crossing point formation of sword cutting edge (401) and move the bellied sword knife tip (402) to the direction of rotation, at the pivoted process move sword cutting edge (401) and move sword knife tip (402) and pass through from stationary knife cutting edge (201).

2. The pulper for a sewage lifting device according to claim 1, wherein: chassis exterior (3) and move rotor (1) and be detachable structure, chassis exterior (3) are including concatenation formula case frame (301) and install front bezel (302) that are equipped with convex sewage entry (3021) in case frame (301) one side opening part, the end shaft peg graft in set up in deep trouth (101) at the both ends of moving rotor (1).

3. A pulper for a sewage lifting device according to claim 2, wherein: the fixed knife (2) comprises a fixed knife blade (202) provided with fixed knife blades (201) arranged in a zigzag manner and a strip-shaped fixed knife rest (203), and fixed knife mounting holes (204) and fixed knife rest mounting holes (205) which are arranged in a staggered manner are formed in two adjacent side surfaces of the strip-shaped fixed knife rest (203).

4. A pulper for a sewage lifting device according to claim 3, wherein: the box frame (301) is provided with a fixed cutter frame mounting groove (3016) and a fixed cutter adjusting hole (206) located beside the fixed cutter frame mounting groove (3016), and the fixed cutter adjusting hole (206) is located at the joint of the fixed cutter blade (202) and the box frame (301).

5. The pulper for a sewage lifting device according to claim 2, wherein: the movable knife (4) comprises a movable knife fixing frame (403) and movable knife blades (404), the movable knife blades (404) are square blades, protruding movable knife points (402) are formed at four corners of one side face of each square blade, and movable knife edges (401) are formed at edges between the movable knife points (402).

6. The pulper for a sewage lifting device according to claim 5, wherein: one side of each of the four corners provided with the movable knife point (402) is a cutting side of the movable knife, and the cutting side forms an arc-shaped recess towards the center by the movable knife point (402) and the movable knife edge (401).

7. The pulper for a sewage lifting device according to claim 6, wherein: move knife roll (1) and be provided with according to row range, staggered arrangement's between the different row move knife mounting groove (102) in order to install and move knife (4), move knife mounting groove (102) including continuous move knife rest mounting groove (1021) and operation groove (1022), it communicates with each other with operation groove (1022) to lie in a lateral wall that moves the opposite directions of knife tip (402) direction in knife rest mounting groove (1021).

8. The pulper for a sewage lifting device according to claim 7, wherein: one side of the movable knife fixing frame (403) is connected with the bottom of a movable knife rest mounting groove (1021) formed in the movable knife roller (1), a V-shaped clamping groove (4031) and a support back plate (4032) are arranged on the other side of the movable knife rest mounting groove to mount the movable knife blade (404), a plane is formed at the top end of the support back plate (4032) to expose the movable knife tip (402), and a protection groove (4033) is formed at the bottom of the V-shaped clamping groove (4031) to place the movable knife tip (402) facing the movable knife fixing frame (403).

9. A pulper for a sewage lifting device according to any one of claims 1 to 8, wherein: the movable knife roll (1) is hollow.

10. A pulper for a sewage lifting device according to claim 2, wherein: the screen cloth is characterized by further comprising an arc-shaped screen cloth (20), wherein the concave side of the screen cloth (20) faces the movable knife roll (1), and two opposite raised sides of the concave side of the arc-shaped screen cloth (20) form connecting edges (2001) which are connected with the inner side of the case shell (3).