Crushing device for sewage lifter

Abstract

The utility model relates to a crushing device for a sewage lifter. The crushing device comprises a sewage pump arranged in a water collecting tank, a sewage inlet and a sewage outlet are formed in the water collecting tank and are respectively communicated with a water pumping part and a water outlet part of the sewage pump; a crushing device is arranged at a water pumping part of the sewage pump, and sewage pumped into the sewage pump is firstly crushed by the crushing device and then is output from a water outlet part; the smashing device at least comprises a movable cutter and a fixed cutter which are coaxially arranged, and a shearing included angle is formed between the movable cutter and the fixed cutter. Compared with the prior art, the sewage treatment device has the beneficial effects that the crushing device is arranged, and solid garbage mixed in sewage is crushed and then discharged, so that the garbage is prevented from blocking the sewage discharge pipe and the sewage discharge port; the fixed cutter and the movable cutter which are of special structures are arranged, solid waste enters the fixed cutter after being cut by the movable cutter, the size of the solid waste is limited, and therefore it is guaranteed that the solid waste cannot block the blow-off pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a crushing device for a sewage processor. Background Art

[0002] A sewage lift is a device integrating crushing and drainage functions. After crushing the objects flowing in from the sewer pipe or the flush toilet, it is lifted and discharged into the preset sewer pipe. It has the function of processing sanitary napkins, toilet paper, hair and other items into pieces and lifting and discharging them into a specific sewage pipe within a short time. It can be mainly used for the discharge of sanitary sewage in basements and places far from the drainage riser where self-flow sewage discharge is not available, and can also be used in occasions with poor drainage conditions such as ships and vehicles.

[0003] The crushing mechanism set in the existing sewage lift usually cannot completely crush solid garbage, or there are dead corners during the rotation of the blades, so that a small amount of solid garbage is still mixed in the lifted sewage, and the sewage outlet is easily blocked during output. Content of the Utility Model

[0004] In order to solve the above problems existing in the prior art, the utility model provides a crushing device for a sewage lift.

[0005] The above problems of the utility model are solved by the following technical solutions:

[0006] A crushing device for a sewage lift includes a sewage pump arranged in a collecting tank; the collecting tank is provided with a sewage inlet and a sewage outlet, which are respectively communicated with the pumping part and the water outlet part of the sewage pump;

[0007] A crushing device is arranged at the pumping part of the sewage pump, and the sewage pumped into the sewage pump is first crushed by the crushing device and then output from the water outlet part;

[0008] The crushing device at least includes a moving knife and a fixed knife arranged coaxially, and a shearing angle is formed between the moving knife and the fixed knife.

[0009] The further setting of the above technical solution is: a plurality of shear openings are arranged on the fixed knife, and a shear blade is arranged on the moving knife;

[0010] The end face of the shear blade is in close contact with the end face of the fixed knife;

[0011] When the shear blade rotates to the position of the shear opening, an angle is formed between the shear blade and the edge of the shear opening, thereby forming a shearing angle.

[0012] The further setting of the above technical solution is: at least one radial side wall of the shear blade is set as an inclined cutting edge.

[0013] The further setting of the above technical solution is that: there are two shearing walls arranged along the rotation direction of the shearing opening, and the two shearing walls have different inclination angles relative to the radial line of the fixed knife.

[0014] The further setting of the above technical solution is that: a plurality of shearing openings are arranged in a circumferential direction.

[0015] The further setting of the above technical solution is that: a driving mechanism is arranged at the bottom of the sewage pump, and the driving mechanism includes a suction wheel;

[0016] An outlet water area is formed between the blades of the suction wheel, and an inlet water area is arranged at the center of the suction wheel;

[0017] The crushing device is communicated with the inlet water area.

[0018] The further setting of the above technical solution is that: an inlet housing with a water outlet is further included, and the suction wheel is located inside the inlet housing;

[0019] The bottom of the inlet housing is hollowed out with a crushing groove, and the fixed knife is embedded in the crushing groove.

[0020] The further setting of the above technical solution is that: the water pumping part is arranged at the bottom of the sewage pump, and the output shaft of the motor in the sewage pump extends downward and is sequentially connected to the suction wheel and the moving knife.

[0021] The further setting of the above technical solution is that: the moving knife is located below the fixed knife.

[0022] The further setting of the above technical solution is that: the fixed knife and the moving knife are rotationally connected through a connecting sleeve.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. A crushing device is provided to crush the solid waste mixed in the sewage and then discharge it, avoiding the blockage of the sewage pipe and the sewage outlet by the waste;

[0025] 2. A fixed knife and a moving knife structure with a special structure are provided. After the solid waste is cut by the moving knife, it enters the fixed knife, and the size of the solid waste is limited, so as to ensure that the solid waste will not block the sewage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic exploded view of this embodiment.

[0027] Figure 2 It is a schematic structural view of the crushing device.

[0028] Figure 3 It is a schematic structural view of the moving knife.

[0029] Figure 4 It is a schematic structural diagram of a fixed knife.

[0030] Figure 5 It is a schematic separation structure diagram of a crushing device and a water inlet housing.

[0031] Figure 6 It is a schematic cross-sectional structure diagram of a water inlet housing.

[0032] Marked on the attached drawings: 100, sewage pump; 110, output shaft;

[0033] 200, fixed knife; 201, cutting opening; 201.1, cutting wall;

[0034] 300, moving knife; 310, cutting knife; 311, cutting edge surface;

[0035] 400, suction wheel;

[0036] 500, water inlet housing; 501, water outlet; 510, reinforcing rib;

[0037] 600, connecting sleeve; 610, limiting ring;

[0038] 700, wear-resistant piece;

[0039] a, cutting angle. Specific embodiments

[0040] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the attached drawings and preferred embodiments, details the specific embodiments, structures, features, and their effects according to the present utility model as follows.

[0041] As Figures 1 - 6 shown, this embodiment discloses a crushing device for a sewage lift pump.

[0042] A crushing device for a sewage lift pump includes a sewage pump 100 arranged in a sump; the sump is provided with a sewage inlet and a sewage outlet, which are respectively connected to the pumping part and the water outlet part of the sewage pump 100;

[0043] A crushing device is arranged at the pumping part of the sewage pump 100, and the sewage pumped into the sewage pump first undergoes crushing treatment by the crushing device and then is output from the water outlet part;

[0044] The crushing device at least includes a moving knife 300 and a fixed knife 200 arranged coaxially, and a cutting angle a is formed between the moving knife 300 and the fixed knife 200.

[0045] The above is the basic solution of this embodiment.

[0046] The sewage in the sewage tank needs to be pumped out of the sewage tank by the sewage pump 100. Before entering the sewage pump 100, it first passes through a crushing device. The solid waste mixed in the sewage is crushed in the crushing device to form extremely fine impurity particles, which enter the sewage pump 100 along with the sewage and are then output from the water outlet part of the sewage pump 100.

[0047] Specifically refer to Figure 1 and Figure 2 As shown, in this embodiment, the pumping part of the sewage pump 100 is located at the bottom. Therefore, the crushing device is arranged at the bottom of the sewage pump 100, and the sewage first passes through the crushing device and then enters the sewage pump 100.

[0048] In other embodiments, the crushing device can also be arranged at any position on the path where the sewage enters the sewage pump 100.

[0049] When the sewage pump 100 operates, it drives the moving knife 300 to rotate. The fixed knife 200 is fixed at the bottom of the sewage pump 100. Therefore, the moving knife 300 rotates relative to the fixed knife 200, and a shearing edge is continuously formed during the rotation process to shear and crush the solid waste stuck in the shearing edge.

[0050] Specifically, in this embodiment, a plurality of shear openings 201 are arranged on the fixed knife 200, and a shear knife 310 is arranged on the moving knife 300;

[0051] The end face of the shear knife 310 is in close contact with the end face of the fixed knife 200;

[0052] When the shear knife 310 rotates to the position of the shear opening 201, an included angle is formed between the shear knife 310 and the edge of the shear opening 201, thereby forming a shear included angle a.

[0053] Specifically refer to the figure Figure 2 As shown, in this embodiment, the fixed knife 200 is arranged as a circular thin sheet, and the shear opening 201 is a through hole arranged on the fixed knife; the shear knife 310 extends radially outward from the main body of the moving knife 300 to the position of the shear opening 201;

[0054] When a part of the shear knife 310 overlaps with the shear opening 201, an included angle is formed between the shear knife 310 and the edge of the shear opening 201, which is the shear included angle a.

[0055] Since the moving knife 300 drives the shear knife 310 to rotate continuously, the overlapping part of the shear knife 310 and the shear opening 201 increases, and the unobstructed area on the shear opening 201 decreases. Therefore, when the solid waste enters the shear opening 201, as the obstructed area decreases, the solid waste is stuck, and when the shear knife 310 passes by, the solid waste stuck on the shear opening 201 is cut.

[0056] Based on the above settings, when multiple solid wastes are stuck in the cutting opening 201, the cutting blades 310 will perform consistent shearing on them during rotation, improving the shearing efficiency.

[0057] Preferably, in this embodiment, two cutting blades 310 are provided.

[0058] Among them, in this embodiment, at least one side wall of the cutting blade 310 along the radial direction is provided with an inclined cutting edge surface 311.

[0059] Specifically refer to Figure 2 and Figure 3 As shown, the setting of the cutting edge surface 311 forms a line contact between the moving blade 300 and the solid waste stuck in the cutting opening 201. When the moving blade 300 passes through the cutting opening 201, the solid waste is directly cut; compared with surface contact, the line contact generates a great cutting force, thereby improving the cutting efficiency and avoiding jamming of the moving blade 300.

[0060] In this embodiment, two shearing walls 201.1 are provided on the cutting opening 201 along the rotation direction, and the two shearing walls 201.1 have different inclination angles with respect to the radial line of the fixed blade 200.

[0061] Specifically refer to Figure 4 As shown, in this embodiment, two inner walls are provided along the circumferential direction, and these two inner walls are the shearing walls 201.1;

[0062] When the solid waste enters the cutting opening 201, it usually clings to the shearing wall 201.1. The cutting blade 310 generates a push on the solid waste during movement. Due to the different slopes of the two shearing walls 201.1, the solid waste has irregular movement. When the solid waste is parallel to the edge line of the cutting edge surface 311, it forms a line contact with the cutting edge surface 311. During the irregular movement, the solid waste is not parallel to the edge line of the cutting edge surface 311, thereby forming a point contact with the cutting edge surface 311, further increasing the shearing force.

[0063] Preferably, in this embodiment, a plurality of cutting openings 201 are arranged in the circumferential direction.

[0064] In this embodiment, a driving mechanism is provided at the bottom of the sewage pump 100, and the driving mechanism includes a suction wheel 400;

[0065] An outlet area is formed between the blades of the suction wheel 400, and an inlet area is provided at the center of the suction wheel 400;

[0066] The crushing device is communicated with the inlet area.

[0067] Specifically refer to Figure 1As shown, the central axis of the suction wheel 400 is aligned with the water pumping direction; the water outlet area is located on the side of the suction wheel 400; when the suction wheel 400 starts with the sewage pump 100, when sewage enters the water inlet area of the suction wheel 400 from the bottom, it needs to pass through the crushing device first, and the treated sewage enters the suction wheel 400 from the water inlet area and then discharges water from the side of the suction wheel 400.

[0068] In this embodiment, the crushing device is arranged on the water inlet path of the sewage to ensure that the sewage output from the drainage pump is sewage that has been subjected to garbage crushing treatment.

[0069] In this embodiment, to ensure the water inlet and outlet paths of the sewage, it further includes a water inlet housing 500 having a water outlet 501, and the suction wheel 400 is located inside the water inlet housing 500;

[0070] The bottom of the water inlet housing 500 is hollowed out with a crushing groove, and the fixed knife 200 is embedded in the crushing groove.

[0071] Specifically referring to Figure 5 and Figure 6 As shown, the water inlet housing 500 is provided, and the crushing device is arranged at the bottom of the water inlet housing 500, that is, the water inlet position. Sewage can only enter from the bottom of the water inlet housing 500, so it must pass through the crushing device; while the sewage in the water collection tank that has not passed through the crushing device cannot enter through the water inlet housing 500, so it cannot be output from the water outlet 501 either;

[0072] In this embodiment, the sewage pipe is connected to the sewage outlets of the water inlet housing 500 and the water collection tank, and the sewage in the water inlet housing 500 is directly discharged to the outside of the water collection tank.

[0073] In this embodiment, the crushing groove is a hollowing out provided at the bottom of the water inlet housing 500.

[0074] In this embodiment, a strengthening groove is provided inside the water inlet housing 500, a strengthening rib 510 is provided in the strengthening groove, the fixed knife 200 is fixed at the bottom of the strengthening groove, and the fixed knife 200 is supported and strengthened by the strengthening rib 510.

[0075] In this embodiment, the water pumping part is arranged at the bottom of the sewage pump 100, and the motor output shaft 110 in the sewage pump 100 extends downward and is sequentially connected to the suction wheel 400 and the moving knife 300.

[0076] The water pumping part is the hollowed out position at the bottom of the water inlet housing 500, and the water outlet part is the water outlet 501 of the water inlet housing 500;

[0077] The suction wheel 400 and the moving knife 300 are driven by the motor output shaft 110, so that the sewage pump 100 and the crushing mechanism start or stop simultaneously, ensuring the consistency of the water pumping work and the crushing work.

[0078] In this embodiment, the water inlet area is arranged at the bottom, which is convenient for pumping out the water at the bottom of the water collection tank and avoiding the loss of the bottom of the water collection tank caused by the accumulation of sewage at the bottom.

[0079] Preferably, in this embodiment, the moving knife 300 is located below the fixed knife 200.

[0080] With this setting, when solid waste enters the cutting opening 201, it is bound to contact the moving knife 300 first. When larger waste cannot directly enter the cutting opening 201, the moving knife 300 cuts it first until it can enter the cutting opening 201.

[0081] By setting the size of the cutting opening 201, the size of the solid waste that can be output from the sewage outlet can be controlled, avoiding blocking the sewage outlet.

[0082] In this embodiment, to prevent the moving knife 300 from being stuck due to friction with the fixed knife during rotation, in this embodiment, the fixed knife 200 and the moving knife 300 are rotatably connected through a connecting sleeve 600.

[0083] Specifically, as shown in Figure 6 described, the connecting sleeve 600 is a cylindrical structure with a shaft hole in the middle, and a limiting ring 610 is provided at the upper part for limiting connection with the fixed knife 200; the moving knife 300 is limitedly sleeved outside the connecting sleeve;

[0084] The output shaft of the motor is limitedly arranged in the shaft hole, driving the connecting sleeve 600 to rotate, so that the connecting sleeve 600 drives the knife 300 to rotate together.

[0085] Preferably, in this embodiment, the limiting ring 610 is located above the fixed knife 200, and a wear-resistant sheet 700 is arranged between the limiting ring 610 and the fixed knife 200. The wear-resistant sheet 700 is sleeved outside the connecting sleeve 600 and located below the limiting ring 610, so as to be clamped between the limiting ring 610 and the fixed knife 200, avoiding the friction jamming caused by the direct contact between the fixed knife 200 and the connecting sleeve 600;

[0086] In addition, a wear-resistant groove is provided on the upper end surface of the moving knife 300, and a wear-resistant sheet 700 is also arranged in the wear-resistant groove to contact the lower end surface of the fixed knife 200, so that the friction jamming caused by the direct contact between the moving knife 300 and the fixed knife 200 can be avoided.

[0087] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present utility model by using the technical content disclosed above. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A comminuting device for a sewage lift pump, comprising a sewage pump (100) disposed in a collection tank; the collection tank is provided with a sewage inlet and a sewage outlet, which are respectively communicated with the pumping part and the water outlet part of the sewage pump (100); It is characterized in that: A comminuting device is arranged at the pumping part of the sewage pump (100), and the sewage pumped into the sewage pump (100) is first comminuted by the comminuting device and then output from the water outlet part; The comminuting device at least comprises a moving knife (300) and a fixed knife (200) arranged coaxially, and a shear angle (a) is formed between the moving knife (300) and the fixed knife (200).

2. The crushing device for a sewage lift pump according to claim 1, characterized in that: A plurality of shear openings (201) are arranged on the fixed knife (200), and a shear knife (310) is arranged on the moving knife (300); The end face of the shear knife (310) is in close contact with the end face of the fixed knife (200); When the shear knife (310) rotates to the position of the shear opening (201), an angle is formed between the shear knife (310) and the edge of the shear opening (201), thereby forming a shear angle (a).

3. The comminuting device for a sewage lift pump according to claim 2, characterized in that: At least one radial side wall of the shear knife (310) is arranged as an inclined cutting edge (311).

4. The comminuting device for a sewage lift pump according to claim 2, characterized in that: Two shear walls (201.1) are arranged along the rotation direction on the shear opening (201), and the two shear walls (201.1) have different inclination angles relative to the radial line of the fixed knife (200).

5. The comminuting device for a sewage lift pump according to claim 2, characterized in that: A plurality of the shear openings (201) are arranged in a circumferential direction.

6. The comminuting device for a sewage lift pump according to claim 1, characterized in that: A driving mechanism is arranged at the bottom of the sewage pump (100), and the driving mechanism comprises a suction wheel (400); An outlet area is formed between the blades of the suction wheel (400), and an inlet area is arranged at the center of the suction wheel (400); The comminuting device is communicated with the inlet area.

7. The comminuting device for a sewage lift pump according to claim 6, characterized in that: It further comprises a water inlet housing (500) having a water outlet (501), and the suction wheel (400) is located in the water inlet housing (500); The bottom of the water inlet housing (500) is hollowed out to form a comminuting groove, and the fixed knife (200) is embedded in the comminuting groove.

8. The comminuting device for a sewage lift pump according to claim 6, characterized in that: The pumping part is arranged at the bottom of the sewage pump (100), and the motor output shaft (110) in the sewage pump (100) extends downward and is sequentially connected to the suction wheel (400) and the moving knife (300).

9. The comminuting device for a sewage lift pump according to claim 1, characterized in that: The moving knife (300) is located below the fixed knife (200).

10. The comminuting device for a sewage lift pump according to claim 9, characterized in that: The fixed knife (200) and the moving knife (300) are rotatably connected through a connecting sleeve (600).

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