Water inlet cutting structure of sewage pump base

Abstract

The utility model provides a water inlet cutting structure of a sewage pump base, and belongs to the technical field of water pump accessories. The problems that in the prior art, a cutting structure is short in service life and prone to generating gaps are solved. The cutting device comprises an outer cutting ring and an inner cutting seat, the outer cutting ring is in a hollow-out circular ring shape, the inner cutting seat is located in the outer cutting ring, a plurality of outer cutting grooves are formed in the outer cutting ring, the outer cutting grooves are of an inclined structure, a through shaft hole is formed in the center of the inner cutting seat, and a coupling body is formed on one side of the center of the inner cutting seat. A key groove is formed in the coupling body, a shaft sleeve is formed on the other side of the center of the inner cutting base, a plurality of inner cutting grooves are formed in the outer portion of the inner cutting base, the inner cutting grooves are also arranged in an inclined structure, the caliber of the outer cutting grooves is larger than that of the inner cutting grooves, and the inclined directions of the outer cutting grooves and the inner cutting grooves are opposite. The inner wall of the outer cutting ring is attached to the outer wall of the inner cutting base. The cutting device has the advantages of being good in cutting effect and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water pump accessories technical field relates to a sewage pump base water inlet cutting structure. BACKGROUND

[0002] The sewage may contain various solid impurities, such as branches, plastic sheets, etc. The base water inlet cutting structure can cut these solid impurities into smaller pieces. This can ensure that these pieces can be smoothly discharged from the pump body through the drainage channel.

[0003] The Chinese patent with patent publication number CN206608328U discloses a hob type cutting pump, comprising a pump body, the pump body comprising a base, a machine base, a motor, a cutting impeller and a water inlet seat, the motor is arranged in the machine base, the motor comprises a motor shaft, an upper end cover, a lower end cover, a bearing, a stator core and a rotor, the upper end cover and the lower end cover are arranged on the motor shaft through the bearing respectively, the stator core and the rotor are arranged between the upper end cover and the lower end cover, the stator core is arranged on the periphery of the rotor, the water inlet seat is arranged on the base, the cutting impeller is connected with the motor shaft and arranged above the water inlet seat, the lower end cover is arranged above the cutting impeller, the cutting impeller has helical blades, the end of the helical blade is a first cutting edge, the top of the water inlet seat has a water inlet, the edge of the water inlet is uniformly distributed with a plurality of hump-shaped flanges, the hump-shaped flanges have a second cutting edge, and the first cutting edge and the second cutting edge are in contact during the rotation of the cutting impeller.

[0004] In the hob type cutting pump provided by the patent, the cutting impeller is used for cutting work, and the first cutting edge and the second cutting edge are in external contact. Since the cutting impeller is relatively thin, after long-term use, a gap is easily formed between the first cutting edge and the second cutting edge when the cutting impeller is worn, which causes the impurities not to be completely cut, thereby affecting the work of the sewage pump. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems existing in the prior art, and provides a sewage pump base water inlet cutting structure.

[0006] The utility model discloses a sewage pump base water inlet cutting structure can be realized through the following technical schemes: a sewage pump base water inlet cutting structure, including outer cutting ring and inner cutting seat, the outer cutting ring is hollow circular ring internally, the inner cutting seat is located the inside of outer cutting ring, a plurality of outer cutting grooves are seted up in the inside of outer cutting ring, the outer cutting groove is seted up to the inclined structure, the through axle hole is seted up in the center of inner cutting seat, the coupling body is formed to one side of the center of inner cutting seat, the key groove is seted up in the inside of coupling body, the shaft sleeve is formed to the other side of the center of inner cutting seat, a plurality of inner cutting grooves are seted up in the outside of inner cutting seat, the inner cutting groove is also seted up to the inclined structure, the caliber of outer cutting groove is greater than inner cutting groove, the inclined direction of outer cutting groove and inner cutting groove is opposite setting, the inner wall of outer cutting ring and the outer wall of inner cutting seat are inlaid.

[0007] In the sewage pump base water inlet cutting structure, the connecting ring is formed on the outside of the outer cutting ring, and the connecting hole is formed on the connecting ring.

[0008] In the sewage pump base water inlet cutting structure, the inner cutting seat is formed with a plurality of inner side cutter blocks on one side.

[0009] In the sewage pump base water inlet cutting structure, the inclined angle of the outer cutting groove and the inner cutting groove is 30°±5°.

[0010] Compared with the prior art, the sewage pump base water inlet cutting structure has the following beneficial effects: 1. The inner cutting seat is installed in the structure of the outer cutting ring, the thickness of the outer cutting ring and the inner cutting seat is relatively thick, the outer cutting groove and the inner cutting groove respectively penetrate the side surface of the outer cutting ring and the inner cutting seat, the outer cutting groove and the inner cutting groove are not easy to be damaged, and no gap is generated between the outer cutting ring and the inner cutting seat; 2. The outer cutting groove and the inner cutting groove are arranged in opposite directions, after the outer cutting groove completes a cutting action, the inner cutting groove immediately performs the next cutting, so that the cutting action is more coherent, the pause time in the cutting process is reduced, and the overall cutting efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0012] Fig. 2 It is the outer cutting ring structure schematic diagram;

[0013] Fig. 3 It is the inner cutting seat structure schematic diagram;

[0014] Fig. 4 It is the inner cutting seat another angle structure schematic diagram.

[0015] In the figure: 1. Outer cutting ring; 11. Outer cutting groove; 12. Connecting ring; 13. Connecting hole; 2. Inner cutting seat; 21. Shaft hole; 22. Coupling body; 23. Keyway; 24. Shaft sleeve; 25. Inner cutting groove; 26. Inner side cutter block. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figs. 1-2 As shown, this embodiment includes an outer cutting ring 1 and an inner cutting seat 2. The outer cutting ring 1 is a circular ring with an internal hollow structure. The inner cutting seat 2 is installed inside the outer cutting ring 1. The outer cutting ring 1 has a plurality of outer cutting grooves 11 inside. The outer cutting grooves 11 are arranged in a circumferential array along the inner wall of the outer cutting ring 1 and the outer cutting grooves 11 cover the inner wall of the outer cutting ring 1. Each outer cutting groove 11 is arranged in the same oblique direction.

[0018] like Figs. 1-4 As shown, a coupling 22 is formed on one side of the center of the inner cutting seat 2, and a keyway 23 is provided inside the coupling 22. A bushing 24 is formed on the other side of the center of the inner cutting seat 2, and a shaft hole 21 is provided in the center of the inner cutting seat 2, and the shaft hole 21 passes through the coupling 22. When connected to the water pump shaft in this embodiment, the water pump shaft is fixedly connected to this embodiment through the keyway 23, the coupling 22, and the shaft hole 21. The bushing 24 provides support for the water pump shaft. Several inner cutting grooves 25 are provided on the outer side of the inner cutting seat 2, and the inner cutting grooves 25 are also arranged in an oblique structure. The outer cutting groove 11... The diameter is larger than the inner cutting groove 25. The outer cutting groove 11 and the inner cutting groove 25 are set in opposite directions. When facing objects with different materials and hardness, the cutting force varies greatly. The outer cutting groove 11 and the inner cutting groove 25, which are set in opposite directions, can better adapt to this variation and improve its reliability and adaptability. When the outer cutting ring 1 and the inner cutting seat 2 are connected, the inner wall of the outer cutting ring 1 and the outer wall of the inner cutting seat 2 are in contact. In this embodiment, water flows through the outer cutting groove 11 and the inner cutting groove 25 and enters the water pump.

[0019] Specifically, the oblique angle of the outer cutting groove 11 and the inner cutting groove 25 is 30°±5°.

[0020] To elaborate further, such as Figs. 1-2 As shown, a connecting ring 12 is formed on the outer side of the outer cutting ring 1. The connecting ring 12 has four connecting holes 13. The connecting ring 12 and the connecting holes 13 are used to connect with the connecting parts on the surface of the water pump.

[0021] To elaborate further, such as Figs. 3-4The inner side of the inner cutting seat 2 is formed with four inner side cutter blocks 26, two of which are long cutter blocks and the other two are short cutter blocks, which further cut the material cut by the outer cutting groove 11 and the inner cutting groove 25.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0023] Although various terms are used herein more frequently, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. A sewage pump base inlet cutting structure, characterized in that: The device includes an outer cutting ring (1) and an inner cutting seat (2). The outer cutting ring (1) is a hollowed-out circular ring. The inner cutting seat (2) is located inside the outer cutting ring (1). The outer cutting ring (1) has several outer cutting grooves (11) inside it. The outer cutting grooves (11) are arranged in an oblique structure. The inner cutting seat (2) has a through shaft hole (21) at its center. A coupling (22) is formed on one side of the center of the inner cutting seat (2). The coupling (22) contains... The inner cutting seat (2) has a keyway (23) and a bushing (24) is formed on the other side of the center of the inner cutting seat (2). The inner cutting seat (2) has several inner cutting grooves (25) on its outside. The inner cutting grooves (25) are also arranged in an oblique structure. The diameter of the outer cutting groove (11) is larger than that of the inner cutting groove (25). The oblique directions of the outer cutting groove (11) and the inner cutting groove (25) are opposite. The inner wall of the outer cutting ring (1) is in contact with the outer wall of the inner cutting seat (2).

2. The sewage pump base inlet cutting structure according to claim 1, characterized in that: A connecting ring (12) is formed on the outer side of the outer cutting ring (1), and a connecting hole (13) is provided on the connecting ring (12).

3. The sewage pump base inlet cutting structure according to claim 1, characterized in that: The inner cutting seat (2) has several inner cutting blocks (26) formed on one side.

4. The sewage pump base inlet cutting structure according to claim 1, characterized in that: The oblique angle of the outer cutting groove (11) and the inner cutting groove (25) is 30°±5°.

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