Crushing cutter for closestool pump

Abstract

The crushing cutter for the closestool pump is installed on a motor cylinder with a motor, the crushing cutter comprises a static cutter and a movable cutter, a cutter body of the static cutter is a flange plate with a crushing hole in the middle, the flange plate is fixed below the motor cylinder through a connecting piece, and the crushing hole in the center of the flange plate is used for suspending the movable cutter; the moving cutter comprises a mounting cutter holder and a cutter body which is arranged at the tail end of the mounting cutter holder, extends towards the periphery and is limited in the range of the crushing holes; and an upper cutting edge and a lower cutting edge of the cutter body are arranged on the circumferential side surface in an up-and-down waved track manner. According to the utility model, the cutter body is adopted as a flange plate, so that the mounting stability of the static cutter is better, and when the static cutter is matched with the movable cutter, more consolidated tearing and strong cutting reaction force are provided; the cutter body of the movable cutter is provided with the upper cutting edge and the lower cutting edge which are arranged on the circumferential side surface in an up-and-down waved track manner; during cutting, winding is prevented, interactive double-cutting operation capacity can be achieved on dirt through the upper cutting edge and the lower cutting edge, the cutting effect is better, and the cutting capacity is higher.

Description

Technical Field

[0001] The utility model relates to a crushing mechanism, in particular to a crushing cutter for a toilet pump, belonging to the technical field of IPC classification B02C. Background Art

[0002] The toilet pump mainly consists of an impeller chamber, a crushing box and a motor cylinder. When sewage enters the toilet pump, the liquid mixture flows into the crushing box. The motor in the motor cylinder rotates the moving knife of the crushing cutter in cooperation with the stationary knife to crush the dirt. In this process, the cooperation between the moving knife and the stationary knife is crucial. The key lies in that when the moving knife rotates, it can form a cutting force with the stationary knife, and the stationary knife also plays a tearing role to a certain extent, and the two achieve the crushing effect on the dirt.

[0003] For the current combination of the moving knife and the stationary knife, there will be a certain gap between the two in terms of structure. This is to enhance the tearing force, but it reduces the cutting force. With the development of current sanitary products, it also brings new challenges in crushing toilet wet wipes. Due to its high toughness, such toilet wet wipes pose greater crushing difficulties to the existing moving knife and stationary knife. Even with a relatively high tearing force, due to the small working area between the stationary knife and the moving knife, the high-toughness surface bodies such as toilet wet wipes cannot be torn off within a small area, so efficient crushing cannot be achieved.

[0004] In view of this situation, we need to improve or develop new crushing cutters to meet the higher-efficiency crushing requirements and avoid affecting the performance and service life of the toilet pump due to blockage problems. This is one of the key issues that need to be considered and solved in the current toilet pump design. Summary of the Invention

[0005] The purpose of the utility model is to solve the above-mentioned deficiencies and provide a crushing cutter for a toilet pump that can achieve an efficient crushing effect in a small working area during cutting and tearing.

[0006] The technical solution for the problem to be solved by the utility model is as follows:

[0007] The crushing cutter is installed on a motor cylinder with a motor. The crushing cutter includes a stationary knife and a moving knife. The characteristics are as follows: The knife body of the stationary knife is a flange plate with a crushing hole in the middle. The flange plate is fixed below the motor cylinder through a connecting piece, and the crushing hole in the center of the flange plate is for the moving knife to be suspended; The moving knife includes an installation knife seat, and a knife body extending from the end of the installation knife seat to the periphery and limited within the range of the crushing hole. The knife body has an upper cutting edge and a lower cutting edge, and the upper and lower cutting edges are arranged in a wave-like trajectory that undulates up and down on the circumferential side surface.

[0008] Preferably, on the circumferential side of the tool body, the upper cutting edge extends beyond the upper edge of the static cutter crushing hole along a wavy track, and the lower cutting edge extends beyond the lower edge of the static cutter crushing hole along a wavy track. The circumferential side of the tool body between the upper and lower cutting edges corresponds to the hole wall of the crushing hole in the middle zone of the wavy track.

[0009] Preferably, the hole wall of the crushing hole is composed of N groove units that are annularly arrayed around the central hole axis of the crushing hole to form the static cutter blade group of the static cutter.

[0010] Preferably, the groove unit is formed by hollowing out the wall of a cylindrical hole, and each groove unit forms two static cutter blades on the hole wall.

[0011] Preferably, a tool holder hole for the shaft of the motor to pass through is provided on the mounting tool holder of the moving cutter, and the moving cutter is fixedly installed on the shaft by a fastener through the tool holder hole.

[0012] The beneficial effects of the present utility model are as follows:

[0013] Compared with the prior art, the present utility model uses a static cutter with a tool body in the form of a flange plate and installs it below the motor cylinder, which makes the static cutter more stable. When cooperating with the moving cutter, it provides a more solid tearing force and a strong cutting reaction force. The tool body of the moving cutter has an upper cutting edge and a lower cutting edge, and the upper and lower cutting edges are arranged in a wavy track that rises and falls on the circumferential side. During cutting, it has the ability to prevent entanglement and perform interactive double cutting on the dirt with the upper and lower cutting edges, resulting in better cutting effect and stronger cutting ability. Description of the Drawings

[0014] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 It is a schematic structural diagram of the present utility model installed on the motor cylinder;

[0016] Figure 2 It is an exploded schematic structural diagram of the present utility model installed on the motor;

[0017] Figure 3 It is an assembly schematic diagram of the moving cutter and the static cutter of the present utility model. Specific Embodiments

[0018] The embodiments of the technical solution of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, that is, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, for those skilled in the art, the present utility model can be implemented without one or more of these details. In these examples, some well-known technical features in the art are not described in order to avoid confusion with the present utility model.

[0019] It should be understood that the present utility model can be implemented in different forms and should not be construed as limited to the embodiments presented here. Therefore, it is only used as an example and cannot be used to limit the protection scope of the present utility model.

[0020] In addition, it should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Refer to Figures 1 to 3 , the shredding cutter of the toilet pump described in the present utility model is an efficient cutting device, which is carefully designed to shred the sewage mixed with toilet waste in the lift pump to ensure the unobstructed sewer. The installation of the shredding cutter is very ingenious. They are fixed on a motor cylinder A with a motor, so as to generate sufficient kinetic energy to shred various hardness of blockages.

[0023] In this design, the shredding cutter consists of two parts: a stationary cutter 1 and a moving cutter 2. The stationary cutter 1 has a unique design. It is a flange plate with a shredding hole 11 in the middle. This flange plate is firmly fixed under the motor cylinder A through bolts and other connecting parts passing through the screw holes 13 on the outer peripheral edge of the flange plate to ensure that it will not loosen during high-speed rotation. The shredding hole 11 is located in the center of the flange plate. Its function is to allow the moving cutter 2 to be suspended in the middle of the shredding hole 11, so as to realize the cooperation between the moving cutter 2 and the stationary cutter 1 during rotation. That is, axially, the moving cutter 2 is driven by the motor B to rotate, and a cutting and tearing working area is generated between its outer contour and the shredding hole 11 of the stationary cutter 1.

[0024] The design of the moving blade 2 is equally exquisite. It includes a mounting seat 21 for the blade. The end of the mounting seat 21 extends towards the periphery and is limited within the range of the crushing hole 11. At the end of the mounting seat 21, a blade body 22 extends outwards from the periphery, which is the main cutting part of the moving blade 2. The special feature of the blade body 22 is that it has an upper cutting edge 23 and a lower cutting edge 24, and these two sets of cutting edges are arranged in an undulating wave trajectory on the circumferential side 25. Such a design enables the moving blade 2 to generate a greater cutting force during rotation, endowing the tool with unique cutting performance and being able to effectively crush the dirt entering the toilet pump. This cutting force is manifested in that the dirt is squeezed and cut by the upper cutting edge 23 and the lower cutting edge 24 along the wave trajectory and the stationary blade 1, without entanglement. And when the dirt enters the working area, part of the dirt is along the wave trajectory at the back, and part of the dirt is along the wave trajectory at the front. The two parts rotate with the moving blade 2 out of sync and are cut and torn, while at the same time, in cooperation with the wave trajectory, the upper cutting edge 23 and the lower cutting edge 24 laterally squeeze and cut the dirt to achieve a super strong pulverizing effect.

[0025] Generally speaking, the design of the crushing tool of this toilet pump is unique, with a compact structure, simple and stable installation, and convenient maintenance.

[0026] Furthermore, as an improvement to the present utility model, on the circumferential side 25 of the blade body 22, the upper cutting edge 23 extends beyond the upper edge 14 of the crushing hole 11 along the wave trajectory, and the lower cutting edge 24 extends beyond the lower edge 15 of the crushing hole 11 along the wave trajectory. The circumferential side 25 of the blade body between the upper cutting edge 23 and the lower cutting edge 24 corresponds to the hole wall of the crushing hole 11 in the middle band of the wave trajectory.

[0027] In this embodiment, when the tool rotates, the upper cutting edge 23 and the lower cutting edge 24 can work together and cut along the wave trajectory, thereby generating a stronger cutting force during the process of crushing the dirt. Specifically, the dirt is torn up and down along the wave trajectory of the upper and lower cutting edges and squeezed and cut with the hole wall of the crushing hole 11, so that the dirt can be easily cut and crushed within the working area.

[0028] At the same time, this design also helps to reduce the friction caused by hard contact during the cutting process and extend the service life of the tool.

[0029] Furthermore, as an improvement to the present utility model, the hole wall of the crushing hole 11 is composed of N groove units 12 arranged in a circular array with the central hole axis of the crushing hole 11 as the center to form the stationary blade edge group of the stationary blade.

[0030] In this embodiment, the edge of the groove of the groove unit 12 provides the edge for the cooperation between the stationary blade 1 and the moving blade 2, strengthening the effect of cutting and crushing the dirt.

[0031] Further, as an improvement to the present utility model, the groove unit 12 is formed by a cylindrical hole with a hollowed-out hole wall. Each groove unit 12 forms two static knife blades 16 on the hole wall.

[0032] In this embodiment, the cylindrical hole is relatively convenient to machine, and two edges are formed by the hollowed-out hole wall of the cylindrical hole. One side of the cylinder loses the cylinder wall and is exposed as the static knife blade 16, which not only reduces the machining cost of the static knife, but also the edge has relatively high strength. Both the cutting performance and the service life are optimal.

[0033] Further, as an improvement to the present utility model, a tool holder hole 25 for the machine shaft of the motor to pass through is provided on the mounting tool holder 21 of the moving knife 2, and the moving knife is fixedly installed on the machine shaft through the tool holder hole 25 by a fastener.

[0034] In this embodiment, the above structure makes the installation of the moving knife 2 convenient, has good stability and is also aesthetically pleasing.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the description of the present utility model.

Claims

1. The crushing cutter for a toilet pump, the crushing cutter is installed on a motor cylinder with a motor, the crushing cutter includes a stationary cutter and a moving cutter, and is characterized in that: The blade body of the stationary blade is a flange plate with a crushing hole in the middle. The flange plate is fixed below the motor cylinder through a connecting piece, and the crushing hole in the center of the flange plate is for suspending the moving blade; the moving blade includes an installation tool holder, and a blade body that extends from the end of the installation tool holder to the periphery and is limited within the range of the crushing hole. The blade body has an upper blade edge and a lower blade edge, and the upper and lower blade edges are arranged in an undulating wave track on the circumferential side surface.

2. The comminuting cutter for a toilet pump according to claim 1, wherein: On the circumferential side surface of the blade body, the upper blade edge extends beyond the upper edge of the crushing hole of the stationary blade along the wave track, and the lower blade edge extends beyond the lower edge of the crushing hole of the stationary blade along the wave track. The circumferential side surface of the blade body between the upper and lower blade edges corresponds to the hole wall of the crushing hole in the middle zone of the wave track.

3. The comminuting cutter for a toilet pump according to claim 1, characterized in that: The hole wall of the crushing hole is composed of N groove units that are annularly arrayed around the central hole axis of the crushing hole to form the stationary blade edge group of the stationary blade.

4. The comminuting cutter for a toilet pump according to claim 3, wherein: The groove unit is formed by hollowing out the wall of a cylindrical hole, and each groove unit forms two stationary blade edges on the hole wall.

5. The comminuting cutter for a toilet pump according to claim 1 or 2 or 3, characterized in that: A tool holder hole for the machine shaft of the motor to pass through is provided on the installation tool holder of the moving blade, and the moving blade is installed and fixed on the machine shaft through the tool holder hole by a fastener.

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