Sewage lifting equipment for crushing machine

Abstract

The present invention discloses a grinder for sewage lifting equipment, belonging to the field of sewage physical treatment devices. The present invention comprises a movable knife roller and a chassis shell with a fixed knife arranged on the inner wall, the two ends of the movable knife roller are connected with end shafts rotatably connected to the chassis shell, one end of the fixed knife is provided with a plurality of fixed knife blades and the other end is fixed to the inner wall of the chassis shell, each movable knife on the movable knife roller is provided with a plurality of movable knife blades, and the intersection point of the movable knife blades forms a movable knife tip protruding in the direction of rotation, and the movable knife blade and the movable knife tip pass between the fixed knife blades during the rotation process, and the movable knife and the fixed knife cooperate to effectively crush the soft and tough substances in the sewage. The present invention has a sufficient crushing effect in combination with a specially designed screen, so that solid garbage and sewage can be discharged together through a sewage pump without clogging the sewage pump. At the same time, the unique chassis, cutter and spindle design of the present invention make the overall equipment small in size, light in weight, and easy to install and maintain.

Description

Technical Field

[0001] The invention belongs to the field of sewage physical treatment devices, and in particular relates to a pulverizer for sewage lifting equipment. Background Art

[0002] The grinders of sewage lifting equipment are widely used in sewage lifting equipment for domestic sewage in residential areas, airports, railway stations, bus stations, hospitals, villages, breeding, towns, office buildings, shopping malls, hotels, restaurants, sanatoriums, institutions, schools, highways, railways, factories, mines, tourist attractions, and similar small and medium-sized industrial organic wastewater such as slaughtering, aquatic product processing, and food. Its installation location is generally underground in the above scenes, and its installation and use space is usually relatively small. Therefore, affected by its installation location and installation and use space, the grinder used in sewage lifting equipment should not be too large in size and too heavy in weight, and should be easy to install and maintain in the later stage. The weight and volume of the grinders used in existing sewage lifting equipment are too large, which is affected by the internal space limitations of the sewage lifting equipment, which is not conducive to installation and later maintenance, and affects the use of the internal space of the sewage lifting equipment.

[0003] The grinders used in existing sewage lifting equipment are not only complex in structure, but also have too large a volume after crushing for soft and tough substances in sewage, which can easily cause blockage and damage to the sewage pump, resulting in high equipment maintenance and repair costs. Summary of the invention

[0004] The present invention is proposed to overcome the shortcomings in the prior art, and its purpose is to provide a grinder for sewage lifting equipment.

[0005] The present invention is achieved through the following technical solutions:

[0006] A grinder for sewage lifting equipment comprises a moving knife roller and a chassis shell with a fixed knife arranged on the inner wall, both ends of the moving knife roller are connected with end shafts rotatably connected to the chassis shell, one end of the fixed knife is provided with a plurality of fixed knife blades and the other end is fixed to the inner wall of the chassis shell, each moving knife on the moving knife roller is provided with a plurality of moving knife blades, and the intersection point of the moving knife blades forms a moving knife tip protruding in the rotation direction, and the moving knife blade and the moving knife tip pass between the fixed knife blades during the rotation process.

[0007] In the above technical solution, the chassis shell and the movable knife roller are both detachable structures. The chassis shell includes a spliced ​​box frame and a front plate installed at an opening on one side of the box frame and provided with a protruding sewage inlet. The end shaft is inserted into deep grooves arranged at both ends of the movable knife roller.

[0008] In the above technical solution, the fixed knife includes a fixed knife blade with a serrated fixed knife blade and a long fixed knife holder, and the adjacent two side surfaces of the long fixed knife holder are provided with staggered fixed knife mounting holes and fixed knife holder mounting holes.

[0009] In the above technical solution, the side plate is further provided with a fixed knife adjustment hole located beside the fixed knife holder installation slot, and the fixed knife adjustment hole is located at the junction of the fixed knife blade and the box frame.

[0010] In the above technical solution, the movable knife includes a movable knife fixing frame and a movable knife blade. The movable knife blade is a square blade with raised movable knife tips formed at four corners of a side surface, and the edges between the movable knife tips form the movable knife blade.

[0011] In the above technical solution, the side with the movable knife tip at each of the four corners is the cutting side of the movable knife, and the cutting side is formed by the movable knife tip and the movable knife blade to form an arc-shaped depression toward the center.

[0012] In the above technical solution, the movable knife roller is provided with movable knife mounting grooves arranged in rows and staggered between different rows for mounting the movable knife, and the movable knife mounting grooves include a connected movable knife holder mounting groove and an operating groove, and the side of the movable knife holder mounting groove opposite to the direction indicated by the movable knife tip is connected to the operating groove.

[0013] In the above technical solution, one side of the moving knife fixing frame is connected to the bottom of the moving knife frame mounting groove arranged on the moving knife roller, and the other side is provided with a V-shaped groove and a supporting back plate to install the moving knife blade, the top of the supporting back plate forms a plane to expose the moving knife tip, and the bottom of the V-shaped groove forms a protective groove to place the moving knife tip facing the moving knife fixing frame.

[0014] In the above technical solution, the movable knife roller is hollow.

[0015] The above technical solution also includes an arc-shaped screen, the concave side of which faces the movable knife roller, and the two raised sides of the concave side of the arc-shaped screen relatively form connecting edges connected to the inner side of the chassis shell.

[0016] The beneficial effects of the present invention are:

[0017] The arc-shaped cutting side of the movable knife and the outwardly protruding knife tip cooperate with the serrated blade of the fixed knife to improve the crushing effect of soft and tough substances in sewage.

[0018] On this basis, in order to further enhance the crushing efficiency and effect, the present invention increases the cutting surface area of ​​the moving knife, increases the thickness of the moving knife and the moving knife seat to provide sufficient moving knife stability and forms more moving knife blades. On this basis, the hollow moving knife roller reduces the weight and the load of the power motor while providing sufficient surface area, and the rotation speed can reach about 600 revolutions per minute, thereby improving the crushing effect and efficiency of solid matter in sewage.

[0019] At the same time, the left and right side panels of the box frame in the present invention adopt a step, slot and bolt connection design, and the fixed knife bracket is installed in the side plate slot body, which ensures the installation accuracy of the fixed knife bracket and increases the firmness of the fixed knife bracket installation. In this way, the fixed knife and the movable knife can cooperate more stably and efficiently.

[0020] Furthermore, in the present invention, the box frame and the main shaft components are all connected by steps, slots and bolts, without welding, and are easy to install and maintain. As needed, only independent parts can be removed for maintenance, which is adaptable to various on-site environments.

[0021] The present invention is a brand-new design of a special pulverizer for sewage lifting equipment. Through the interaction of the new movable blade and fixed blade of the pulverizer, in combination with a specially designed screen, the soft and tough substances in the sewage can be fully pulverized, so that solid garbage and sewage can be discharged together through the sewage pump without clogging 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 chassis, blade and spindle makes the overall equipment small in size, light in weight, and easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a rear view schematic diagram of the appearance of the present invention;

[0023] Figure 2 It is an exploded schematic diagram of the chassis shell in the present invention;

[0024] Figure 3 It is a schematic diagram of the structure explosion of the movable knife roller, the end shaft, the first end plate and the second end plate in the present invention;

[0025] Figure 4 It is a front view structural schematic diagram of the present invention without side panels and flange connectors;

[0026] Figure 5 It is a structural schematic diagram of the movable knife roller, the end shaft and other necessary parts arranged on the end shaft in the present invention;

[0027] Figure 6 It is a schematic cross-sectional structure diagram of the movable knife roller and the end shaft in the present invention;

[0028] Figure 7It is a schematic diagram of the structure of the fixed knife and the side plate installation in the present invention;

[0029] Figure 8 It is a schematic diagram of the fixed knife holder in the present invention;

[0030] Fig. 9 It is a schematic diagram of the movable blade of the present invention;

[0031] Fig.10 It is a schematic diagram of the movable knife fixing frame in the present invention;

[0032] Fig.11 It is a schematic diagram of a rear view angle when the movable blade and the movable blade fixing frame of the present invention are installed;

[0033] Fig.12 It is a schematic diagram of the implementation of the screen being installed on the side plate in the present invention;

[0034] Fig.13 It is a schematic diagram of the screen in the present invention;

[0035] Fig.14 It is a schematic diagram of the inner side of the front plate in the present invention.

[0036] in:

[0037] 1. Moving knife roller, 101. Deep groove,

[0038] 102. Moving knife installation slot, 1021. Moving knife holder installation slot,

[0039] 1022. Operation slot, 2. Fixed knife,

[0040] 201. Fixed knife blade, 202. Fixed knife blade,

[0041] 203. Fixed knife holder, 204. Fixed knife mounting hole,

[0042] 205. Fixed knife holder installation hole, 206. Fixed knife adjustment hole,

[0043] 3. Chassis shell, 301. Box frame,

[0044] 3011. First end plate, 3012. Second end plate,

[0045] 3013. Side plate, 3014. End plate mounting slot,

[0046] 3015. End plate mounting hole, 3016. Fixed tool holder mounting slot,

[0047] 3017. Flange connector, 3018. Hook,

[0048] 302. Front plate, 3021. Sewage inlet,

[0049] 3022. U-shaped step groove, 3023. Bolt hole,

[0050] 4. Moving knife, 401. Moving knife blade,

[0051] 402. Moving knife tip, 403. Moving knife fixing frame,

[0052] 4031. V-shaped slot, 4032. Support back panel,

[0053] 4033. Protective groove, 404. Moving blade,

[0054] 4041. Platform, 5. Keyway,

[0055] 6. Shaft seat, 601. Mounting block,

[0056] 7. End shaft mounting hole, 8. Bearing seat,

[0057] 9. End cover, 10. First step shaft,

[0058] 11. Second step shaft, 12. Mechanical seal,

[0059] 13. Oil seal, 14. Shaft end fastening gasket,

[0060] 15. Shaft end fastening nut, 16. Circlip,

[0061] 17. Front plate mounting hole, 18. Moving tool holder mounting hole,

[0062] 19.Moving blade installation hole, 20.Screen,

[0063] 2001. Connecting edge, 2002. Screen installation hole,

[0064] 2003. Sieve aperture. DETAILED DESCRIPTION

[0065] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0066] Embodiment 1:

[0067] like Figure 1As shown, the pulverizer for sewage lifting equipment includes a moving knife roller 1 and a chassis shell 3 with a fixed knife 2 on the inner wall, the moving knife roller 1 has end shafts rotatably connected to the chassis shell 3 inserted at both ends, one end of the fixed knife 2 is provided with a plurality of fixed knife blades 201 and the other end is fixed to the inner wall of the chassis shell 3, each moving knife 4 on the moving knife roller 1 is provided with a plurality of moving knife blades 401, and the intersection points of the moving knife blades 401 form a moving knife tip 402 protruding in the rotation direction, and during the rotation process, the moving knife blades 401 and the moving knife tip 402 pass between the fixed knife blades 201, generating mutual cutting force and tearing force, so as to achieve the purpose of crushing solid matter in sewage. In the present invention, the movable knife roller 1 and the chassis shell 3 are detachable, the movable knife 4 and the fixed knife 2 have a good cooperation effect, and a plurality of fixed knife blades 201 and movable knife blades 401 work in cooperation during the rotation process, and the movable knife tip 402 further cuts the flexible material hanging thereon, with high crushing efficiency, and is particularly effective for soft and tough materials in sewage.

[0068] To further facilitate on-site maintenance, such as Figure 2 As shown, the chassis shell 3 and the movable knife roller 1 in the present invention are both detachable structures, the chassis shell 3 includes a spliced ​​box frame 301 and a front plate 302 installed at an opening on one side of the box frame 301, and the end shaft is inserted into the deep groove 101 set at both ends of the movable knife roller 1.

[0069] Further, if Figure 6 As shown, the movable knife roller 1 is a hollow structure with greatly reduced weight, and can be moved with fingers, which greatly reduces the load of the power motor. Its rotation speed can reach about 600 revolutions per minute, thereby improving the crushing effect and efficiency of solid matter in sewage.

[0070] The pulverizer for sewage lifting equipment with high crushing efficiency and excellent crushing effect provided by the present invention makes the sewage pump less likely to be blocked, thereby improving the overall performance and efficiency of the entire sewage lifting equipment.

[0071] Embodiment 2:

[0072] In Example 1, Figure 3 , Figure 6 As shown, the end shaft is inserted into the deep groove 101 arranged at both ends of the movable knife roller 1, one end of the end shaft forms a stepped shaft and the other end forms a shaft seat 6 with a mounting block 601, deep grooves 101 for inserting the mounting blocks 601 are formed at both ends of the movable knife roller 1, and matching end shaft mounting holes 7 are provided in the mounting blocks 601 and the deep groove 101. After the mounting blocks 601 and the deep groove 101 are inserted, the end shaft and the movable knife roller 1 can be installed by using bolts to match the end shaft mounting holes 7.

[0073] like Figure 1 and Figure 2As shown, a bearing seat 8 is arranged between the step shaft and the crusher housing 3, and 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 with a keyway 5 at the end. The first step shaft 10 passes through the end cover 9 to connect to the power drive device, and the end of the second step shaft 11 is arranged in the end cover 9.

[0074] like Figure 5 As shown, the first stepped shaft 10 and the second stepped shaft 11 are also provided with a mechanical seal 12, an oil seal 13, a shaft end fastening gasket 14, a shaft end fastening nut 15, a retaining spring 16 and other parts to maintain accurate installation of the shaft and stable operation.

[0075] Embodiment 3:

[0076] In Example 1, Figure 2 As shown, the chassis shell 3 is a detachable structure, including a spliced ​​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, and an end plate mounting groove 3014 is formed on the side plate 3013, and the two ends of the first end plate 3011 and the second end plate 3012 are arranged in parallel in the end plate mounting groove 3014. Further, matching end plate mounting holes 3015 are arranged at the end plate mounting groove 3014 and the two ends of the first end plate 3011 and the second end plate 3012, and the installation of the first end plate 3011, the second end plate 3012 and the side plate 3013 can be completed by using bolts to match the end plate mounting holes 3015. The end plate mounting groove 3014 makes the installation of the box frame 301 more stable and accurate, and ensures the appearance of the box frame 301.

[0077] A protruding sewage inlet 3021 is provided on one side of the front plate 302, and a U-shaped step groove 3022 is provided on the other side. Matching front plate mounting holes 17 are provided at the bottom of the U-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. When in use, the U-shaped step groove 3022 is spliced ​​with the opening of the box frame 301, and bolts are used to match the front plate mounting holes 17 to complete the splicing of the front plate 302 and the box frame 301. Further, a bolt hole 3023 is also provided at the sewage inlet 3021 to fix it to the sewage pipe.

[0078] Furthermore, a hook 3018 is installed on the first end plate 3011 to assist in fixation; a flange connector 3017 is provided on the chassis shell 3 and is covered on the outside of the bearing seat 8 to further connect with the power drive device.

[0079] The components in the chassis housing 3 of this embodiment are designed to be connected by grooves and bolts, which ensures accurate and firm installation and is easy to install and disassemble for maintenance. The installation accuracy of the bearing seat 8 in embodiment 2 can be further enhanced to ensure the stability of the moving knife roller 1.

[0080] Embodiment 4:

[0081] On the basis of Example 1, Figure 1 , Figure 2 and Figure 7 As shown, the fixed knife 2 includes a fixed knife blade 202 provided with a fixed knife blade 201 arranged in a serrated shape and a long fixed knife holder 203, as shown in FIG. Figure 8 As shown, the adjacent two side surfaces of the long strip-shaped fixed blade holder 203 are provided with fixed blade mounting holes 204 and fixed blade holder mounting holes 205, and the fixed blade 202 is provided with fixed blade mounting holes 204 for easy installation. The fixed blade holder 203 is installed in a fixed blade holder mounting groove 3016 provided on the side plate, and the fixed blade holder mounting groove 3016 is arranged perpendicular to the end plate mounting groove 3014. The bottom of the fixed blade holder mounting groove 3016 is also provided with a fixed blade holder mounting hole 205, and the fixed blade holder 203 can be installed by matching the bolts with the fixed blade holder mounting holes 205.

[0082] The side plate 3013 is also provided with a fixed knife adjustment hole 206 located next to the fixed knife holder mounting groove 3016, and the fixed knife adjustment hole 206 is located at the junction of the fixed knife blade 202 and the side plate 3013. A bolt is further screwed into the fixed knife adjustment hole 206, and the length of the bolt exposed from the inner side of the side plate 3013 is adjusted, so that the distance between the fixed knife blade 202 and the moving knife roller 1 can be adjusted to obtain the best crushing effect.

[0083] When in use, the bolts in the fixed blade holder mounting hole 205 may be loosened first, the bolts in the fixed blade adjustment hole 206 may be adjusted, and then the bolts in the fixed blade holder mounting hole 205 may be tightened again.

[0084] Embodiment 5:

[0085] On the basis of Example 1, Figure 9-11As shown, the movable knife 4 includes a movable knife fixing frame 403 and a movable knife blade 404. The movable knife blade 404 is a square blade with raised movable knife tips 402 formed at the four corners of one side, and the edges between the movable knife tips 402 form a movable knife blade 401. The side with movable knife tips 402 at the four corners is the cutting side of the movable knife. The cutting side is formed into an arc-shaped depression toward the center by the movable knife tips 402 and the movable knife blade 401, and further, the movable knife blade 401 is also arc-shaped. The movable knife blade 404 in the present invention has four movable knife tips 402 and movable knife blades 401. In use, two movable knife blades 401 and one movable knife tip 402 are exposed outside the movable knife roller 1, with the diagonal line on the cutting surface as the boundary. When the moving knife tip 402 or the moving knife edge 401 is worn, the installation direction of the moving knife blade 404 can be changed, and the spare moving knife tip 402 or the moving knife edge 401 can be replaced for continued use; at the same time, the design of the moving knife blade 404 of the square blade makes the contact surface between the moving knife blade 404 and the moving knife fixing frame 403 larger, the installation is more firm, and the impact resistance is stronger. Further, the moving knife blade in the present invention adopts high wear-resistant and high-strength alloy steel, such as SKD11 mold steel, etc., which has the characteristics of high hardness and good wear resistance.

[0086] like Figures 3 to 5 As shown, the movable knife roller 1 is provided with movable knife mounting grooves 102 arranged in columns and staggered between different columns for mounting the movable knife 4, the movable knife mounting groove 102 includes a connected movable knife holder mounting groove 1021 and an operating groove 1022, the operating groove 1022 is communicated with a side of the movable knife holder mounting groove 1021 which is opposite to the direction indicated by the movable knife tip 402, when the movable knife fixing frame 401 is fixed in the movable knife holder mounting groove 1021, the movable knife blade 404 and the movable knife fixing frame 403 can be disassembled and assembled through the operating groove 1022.

[0087] Furthermore, one side of the movable knife fixing frame 403 is connected to the bottom of the movable knife frame mounting groove 1021 provided on the movable knife roller 1, and the other side is provided with a V-shaped groove 4031 and a supporting back plate 4032 for mounting the movable knife blade 404, and the top of the supporting back plate 4032 forms a plane to expose the movable knife tip 402. The movable knife frame mounting hole 18 is provided in the V-shaped groove 4031 to cooperate with the bolt to be installed in the movable knife frame mounting groove 1021.

[0088] To facilitate installation, Fig. 9 As shown, a raised platform 4041 is formed in the center of the movable blade 404, and the movable blade 404 can be fixed to the movable blade fixing frame 401 by matching movable blade mounting holes 19 arranged at the center of the platform 4041 and the supporting back plate 4032 with bolts.

[0089] In order to further prevent the movable knife tip 402 from rubbing against the V-shaped groove 4031, Fig.10 As shown, a protective groove 4033 is formed at the bottom of the V-shaped groove 4031 to place the moving knife tip 402 facing the moving knife fixing frame 403 .

[0090] Embodiment 6:

[0091] On the basis of the above embodiments, the present invention further includes an arc-shaped screen 20, such as Fig.12 , Fig.13 As shown, the concave side of the screen 20 faces the moving knife roller 1, and the two raised sides of the concave side of the arc-shaped screen 20 form a connecting edge 2001 that is connected to the inner side of the chassis shell 3. That is, matching screen installation holes 2002 are provided on the connecting edge 2001 and the inner side of the chassis shell 3, and the screen 20 can be quickly fixed and installed by matching with bolts.

[0092] The mesh 20 is kept at a certain distance from the moving knife tip 402. The mesh 20 is provided with circular mesh holes 2003. The diameter of the mesh holes 2003 is one of 20 mm, 25 mm, 30 mm, and 35 mm, which can be selected according to the size of the sewage pump used in practice. When the sewage pump size is not the size used in daily life, the size of the mesh holes 20 can be re-determined according to the actual situation.

[0093] The screen 20 can make the solid matter that has not been completely crushed enter the space between the fixed blade 2 and the moving blade 4 of the pulverizer again or even multiple times for crushing until the volume of the fragments reaches the required size. The screen holes 20 of suitable size can make the crushed matter flow out smoothly, and its size will not block the sewage pump. The existing sewage lifting and treatment equipment pulverizer usually has no screen, or the screen design is unreasonable. The screen 20 in the present invention is a special screen designed for the pulverizer of sewage lifting equipment.

[0094] The arc-shaped cutting side of the movable knife and the outwardly protruding knife tip cooperate with the serrated blade of the fixed knife to improve the crushing effect of soft and tough substances in sewage.

[0095] On this basis, in order to further enhance the crushing efficiency and effect, the present invention increases the cutting surface area of ​​the moving knife, increases the thickness of the moving knife blade and the moving knife seat to provide sufficient moving knife stability and form more moving knife blades; the hollow moving knife roller provides sufficient surface area to accommodate a sufficient number of thickened moving knives while reducing the weight and the load on the power motor. The rotation speed can reach about 600 revolutions per minute, thereby improving the crushing effect and efficiency of solid matter in sewage.

[0096] At the same time, the left and right side panels of the box frame in the present invention adopt a step, slot and bolt connection design, and the fixed knife bracket is installed in the side plate slot body, which ensures the installation accuracy of the fixed knife bracket and increases the firmness of the fixed knife bracket installation. In this way, the fixed knife and the movable knife can cooperate more stably and efficiently.

[0097] Furthermore, in the present invention, the box frame and the main shaft components are all connected by steps, slots and bolts, without welding, and are easy to install and maintain. Only some parts can be removed for maintenance as needed, which is suitable for various on-site environments.

[0098] The present invention is a brand-new design of a special pulverizer for sewage lifting equipment. Through the interaction of the new movable blade and fixed blade of the pulverizer, in combination with a specially designed screen, the soft and tough substances in the sewage can be fully pulverized, so that solid garbage and sewage can be discharged together through the sewage pump without clogging 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 chassis, blade and spindle makes the overall equipment small in size, light in weight, and easy to install and maintain.

[0099] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0100] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0101] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0102] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A pulverizer for sewage lifting equipment, comprising a moving blade roller (1) and a casing (3) with a fixed blade (2) arranged on the inner wall, characterized in that: The two ends of the movable knife roller (1) are connected to end shafts rotatably connected to the chassis shell (3); one end of the fixed knife (2) is provided with a plurality of fixed knife blades (201) and the other end is fixed to the inner wall of the chassis shell (3); each movable knife (4) on the movable knife roller (1) is provided with a plurality of movable knife blades (401); the intersection points of the movable knife blades (401) form movable knife tips (402) protruding in the rotation direction; during the rotation process, the movable knife blades (401) and the movable knife tips (402) pass between the fixed knife blades (201); The movable knife (4) comprises a movable knife fixing frame (403) and a movable knife blade (404); a raised platform (4041) is formed in the center of the movable knife blade (404); the movable knife blade (404) is fixed to the movable knife fixing frame (403) by means of matching movable knife blade mounting holes (19) arranged at the center of the platform (4041) and the supporting back plate (4032) in combination with bolts; one side of the movable knife fixing frame (403) is connected to the bottom of a movable knife frame mounting groove (1021) arranged on the movable knife roller (1); the other side is provided with a V-shaped groove (4031) and a supporting back plate (4032) for mounting the movable knife blade (404); the top end of the supporting back plate (4032) forms a plane to expose the movable knife tip (402); the V-shaped groove (4031) is provided with a movable knife frame mounting hole (18) for mounting in the movable knife frame mounting groove (1021) in combination with bolts; The movable knife roller (1) is hollow, one end of the end shaft forms a stepped shaft and the other end forms an axle seat (6) provided with a mounting block (601), deep grooves (101) for inserting the mounting blocks (601) are formed at both ends of the movable knife roller (1), and matching end shaft mounting holes (7) are provided in the mounting blocks (601) and the deep grooves (101), and the movable knife roller (1) is provided with movable knife mounting grooves (102) arranged in rows and staggered between different rows for mounting the movable knife (4).

2. The pulverizer for sewage lifting equipment according to claim 1, characterized in that: The chassis shell (3) and the movable blade roller (1) are both detachable structures. The chassis shell (3) comprises a spliced ​​box frame (301) and a front plate (302) installed at an opening on one side of the box frame (301) and provided with a protruding sewage inlet (3021).

3. The crusher for sewage lifting equipment according to claim 2, characterized in that: The fixed knife (2) comprises a fixed knife blade (202) provided with a fixed knife blade edge (201) arranged in a sawtooth shape and a long strip-shaped fixed knife holder (203), and the adjacent two side surfaces of the long strip-shaped fixed knife holder (203) are provided with staggered fixed knife mounting holes (204) and fixed knife holder mounting holes (205).

4. The pulverizer for sewage lifting equipment according to claim 3, characterized in that: The box frame (301) comprises a first end plate (3011), a second end plate (3012) and a side plate (3013); the side plate (3013) is provided with a fixed knife holder installation groove (3016) and a fixed knife adjustment hole (206) located next to the fixed knife holder installation groove (3016); the fixed knife adjustment hole (206) is located at the junction of the fixed knife blade (202) and the box frame (301).

5. The pulverizer for sewage lifting equipment according to claim 2, characterized in that: The movable blade (404) is a square blade with raised movable blade tips (402) formed at four corners of a side surface, and the edges between the movable blade tips (402) form a movable blade edge (401).

6. The pulverizer for sewage lifting equipment according to claim 5, characterized in that: The side with the movable knife tips (402) at the four corners is the cutting side of the movable knife, and the cutting side is formed into an arc-shaped depression toward the center by the movable knife tips (402) and the movable knife blade (401).

7. The pulverizer for sewage lifting equipment according to claim 6, characterized in that: The movable knife installation groove (102) comprises a movable knife holder installation groove (1021) and an operating groove (1022) which are connected to each other; a side wall of the movable knife holder installation groove (1021) which is located in a direction opposite to the direction indicated by the movable knife tip (402) is in communication with the operating groove (1022).

8. The pulverizer for sewage lifting equipment according to claim 2, characterized in that: It also includes an arc-shaped screen (20), the concave side of the screen (20) faces the movable knife roller (1), and the two raised sides of the concave side of the arc-shaped screen (20) form connecting edges (2001) that are connected to the inner side of the chassis shell (3).

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