A cutting type water pump on the crushing cutting device

Abstract

The utility model discloses a kind of comminution cutting device on cutting type water pump, including cutting cutter, cutting tool bit, pump body, motor rotating shaft, impeller, fastening screw rod, blade and cutting edge, the cutting tool bit is connected with motor rotating shaft by inlaying fastening screw rod, the surface of cutting cutter is with center as origin annular array distribution has inner ring cutter hole and outer ring cutter hole, the water suction opening of pump body is provided with annular chute, cutting cutter is fixed in pump body by fastening screw, motor rotating shaft is locked after penetrating pump body with cutting tool bit by fastening screw rod.The utility model cutting tool bit is connected with motor rotating shaft by completely embedded fastening screw rod, screw rod outer surface is not protruding on tool bit end face, from structure, eliminate long fiber winding risk, guarantee equipment continuous operation, cutting cutter is with center as origin annular distribution inner ring cutter hole and outer ring cutter hole, form multilayer cutting area, cooperate the rotary motion of cutting tool bit, significantly increase the contact frequency of sundries and cutting edge, improve comminution efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a crushing and cutting device on a cutting type water pump. Background Technology

[0002] A water pump is a machine that transports or pressurizes liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing its energy. It is mainly used to transport liquids including water, oil, acids and alkalis, emulsions, suspensions, and liquid metals. Water pumps are also needed for sewage discharge. To prevent clogging, water pumps with cutting and shredding functions are required. In the process of pumping sewage, debris in domestic sewage is difficult to cut and easily becomes entangled, causing the pump to malfunction and resulting in drainage difficulties. The cutting device is located at the pump's suction port and consists of a cutter head. The device consists of a cutter head and a cutter disc, with the cutter disc stationary at the water pump inlet. The cutter head is connected to the motor bearing and rotates rapidly with the motor shaft, causing the cutter head to move tangentially with the cutter disc. However, the current crushing and cutting device on a cutting water pump does not have enough cutting frequency and intensity, resulting in poor cutting effect. Due to the poor cutting effect, the debris is not crushed enough, causing it to clog the water passage holes on the cutting disc and inside the water pump body. Furthermore, long fibers (such as hair) in the sewage can become entangled on the fasteners of the cutter. Therefore, we propose a crushing and cutting device for a cutting water pump. Summary of the Invention

[0003] The purpose of this utility model is to provide a crushing and cutting device for a cutting type water pump, which has the advantages of good cutting effect, prevention of clogging, and prevention of entanglement. It solves the problem that the current crushing and cutting device for a cutting type water pump does not have enough cutting frequency and cutting intensity for debris, resulting in poor cutting effect. Due to poor cutting effect, the debris is not cut into small pieces, causing debris to block the water passage hole on the cutting disc and the inside of the water pump body. In addition, long fibers (such as hair) in sewage will get entangled on the fasteners of the cutting blade.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a crushing and cutting device on a cutting water pump, comprising a cutting disc, a cutting head, a pump body, a motor shaft, an impeller, a fastening screw, a blade, and a cutting edge. The cutting head is connected to the motor shaft via an embedded fastening screw. The surface of the cutting disc has an inner ring of cutting holes and an outer ring of cutting holes arranged in a circular array with the center as the origin. An annular groove is provided at the water inlet of the pump body. The cutting disc is fixed to the pump body by fastening screws. The motor shaft passes through the pump body and is locked to the cutting head by fastening screws.

[0005] Preferably, the fastening screw is fully embedded in the cutting head, and the outer surface of the fastening screw does not protrude from the end face of the cutting head.

[0006] Preferably, the inner and outer ring cutting holes are inclined at an angle to the plane of the cutting disc, the inclination direction of the inner and outer ring cutting holes is consistent with the impeller rotation direction, the ratio of the number of inner ring cutting holes to the number of outer ring cutting holes is 1:2, and the diameters of the inner and outer ring cutting holes are different.

[0007] Preferably, the cutting head consists of three blades, and the gap between the blade edge and the cutting edge 10 of the cutting disc is 0.1-0.2mm.

[0008] Preferably, the cutting disc and the cutting head are made of 304 stainless steel.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] This invention relates to a cutting head connected to a motor shaft via a fully embedded fastening screw. The outer surface of the fastening screw does not protrude from the end face of the cutting head, structurally eliminating the risk of long fiber entanglement and ensuring continuous operation of the equipment. The cutting disc features an inner and outer ring of cutting holes arranged in a ring around its center, forming multiple cutting zones. Combined with the rotational motion of the cutting head, this significantly increases the number of contacts between the debris and the blade, improving crushing efficiency. The fastening screw's complete embedding within the cutting head avoids the entanglement point created by traditional protruding screws, reducing entanglement. The inner and outer ring cutting holes are inclined towards the impeller's rotation direction, utilizing water flow to guide the chopped debris out through the holes, reducing debris accumulation within the holes. The inner and outer ring cutting holes have different sizes to accommodate different sizes of debris. The larger inner ring cutting hole prioritizes larger debris, while the smaller outer ring cutting hole further refines and pulverizes it, reducing the probability of clogging. The cutting head consists of three sets of blades. As the cutting head rotates, the cutting edge of each set of blades forms an independent cutting unit with the cutting hole of the cutting disc, which can improve cutting efficiency. The blades maintain a very small gap with the cutting edge of the cutting hole, ensuring that the debris is fully sheared and pulverized, avoiding the problem of incomplete cutting caused by excessive gaps. The cutting disc and cutting head are made of 304 stainless steel, which has high surface hardness and corrosion resistance, can withstand long-term high-speed cutting wear, extend the service life of the device, and reduce the frequency of replacement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the bottom part of the present invention;

[0013] Figure 3 This is an exploded view of the internal structure of this utility model;

[0014] Figure 4 This is a top view of the cutting disc structure of this utility model;

[0015] Figure 5 This is a schematic diagram of the main sectional view of the cutting disc of this utility model;

[0016] Figure 6 This is a schematic diagram of the cutting head structure of this utility model.

[0017] In the diagram: 1. Cutting disc; 2. Cutting head; 3. Pump body; 4. Motor shaft; 5. Impeller; 6. Fastening screw; 7. Inner ring cutter hole; 8. Outer ring cutter hole; 9. Blade; 10. Cutting edge. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Please see Figure 1-6 As shown, this utility model provides a crushing and cutting device for a cutting type water pump, including a cutting disc 1, a cutting head 2, a pump body 3, a motor shaft 4, an impeller 5, a fastening screw 6, a blade 9, and a cutting edge 10. The cutting head 2 is connected to the motor shaft 4 via an embedded fastening screw 6. The surface of the cutting disc 1 has an inner ring of cutting holes 7 and an outer ring of cutting holes 8 arranged in a circular array with the center as the origin. An annular groove is provided at the water inlet of the pump body 3. The cutting disc 1 is fixed to the pump body 3 by fastening screws. The motor shaft 4 passes through the pump body 3 and is locked to the cutting head 2 by the fastening screw 6. The fastening screw 6 is fully embedded. The outer surface of the fastening screw 6 does not protrude from the end face of the cutting head 2. The inner ring cutting hole 7 and the outer ring cutting hole 8 are inclined at an angle to the plane of the cutting disc 1. The inclination direction of the inner ring cutting hole 7 and the outer ring cutting hole 8 is consistent with the rotation direction of the impeller 5. The ratio of the number of inner ring cutting holes 7 to the number of outer ring cutting holes 8 is 1:2. The hole diameters of the inner ring cutting holes 7 and the outer ring cutting holes 8 are different. The cutting head 2 is composed of three sets of blades 9. The gap between the cutting edge 10 of the blade 9 and the cutting edge 10 of the cutting hole of the cutting disc 1 is 0.1-0.2mm. The materials of the cutting disc 1 and the cutting head 2 are 304 stainless steel.

[0021] In this technical solution, the cutting head 2 is connected to the motor shaft 4 via a fully embedded fastening screw 6. The outer surface of the fastening screw 6 does not protrude from the end face of the cutting head 2, structurally eliminating the risk of long fiber entanglement and ensuring continuous operation of the equipment. The cutting disc 1 has inner ring cutting holes 7 and outer ring cutting holes 8 arranged in a ring around the center, forming a multi-layer cutting area. Combined with the rotational motion of the cutting head 2, this significantly increases the number of contacts between the debris and the blade 10, improving the crushing efficiency. The fastening screw 6 is fully embedded in the cutting head 2, avoiding the entanglement fulcrum formed by traditional protruding screws, thus reducing entanglement. The inner ring cutting holes 7 and outer ring cutting holes 8 are inclined in the rotation direction of the impeller 5, using water flow power to guide the chopped debris out through the cutting holes, reducing the accumulation of debris in the cutting holes. The inner ring cutting hole 7 and the outer ring cutting hole 8 have different sizes, which can adapt to the cutting needs of different sized debris. The large-diameter inner ring cutting hole 7 prioritizes the processing of larger debris, while the small-diameter outer ring cutting hole 8 further refines and crushes it, reducing the probability of clogging. The cutting head 2 consists of three sets of blades 9. When the cutting head 2 rotates, the cutting edge 10 of each set of blades 9 and the cutting hole of the cutting disc form an independent cutting unit, which can improve cutting efficiency. The cutting edge 10 and the cutting edge 10 of the cutting hole maintain a very small gap to ensure that the debris is fully sheared and crushed, avoiding the problem of incomplete cutting caused by excessive gap. The cutting disc 1 and the cutting head 2 are made of 304 stainless steel, which has high surface hardness and corrosion resistance, can withstand long-term high-speed cutting wear, extend the service life of the device, and reduce the frequency of replacement.

[0022] The working principle of this utility model is as follows: When the water pump is running, the motor shaft 4 drives the cutting head 2 to rotate counterclockwise. The cutting head 2 is locked to the motor shaft 4 by an embedded fastening screw 6. The fastening screw 6 is completely embedded in the cutting head 2 to prevent long fibers from getting tangled. The cutting disc 1 is fixed on the pump body 3. Its surface has an inner ring of cutting holes 7 and an outer ring of cutting holes 8 arranged in a circular array with the center as the origin. The cutting edges 10 of the inner ring cutting holes 7 and the outer ring cutting holes 8 form arc-shaped sharp angles and are inclined at an angle to the plane of the cutting disc 1 (the inclination direction is consistent with the impeller rotation direction). After the impurities in the sewage enter the water pump suction port with the water flow, the three blades of the cutting head 2... The blade 9 rotates at high speed with the motor shaft 4. The cutting edge 10 of the blade 9 forms a mutual cutting motion with the inner ring cutting hole 7 and the outer ring cutting hole 8 on the cutting disc 1. Since the cutting holes are arranged in a ring array and there are many of them, the design of three sets of blades 9 significantly increases the number of cutting times per unit time. The arc-shaped cutting edge 10 prolongs the cutting contact time between the debris and the cutting hole, enhances the cutting intensity, and makes the debris fully crushed. At the same time, the inclined angle design of the cutting hole causes the chopped debris to be discharged along the water flow direction at the inclined angle of the cutting edge 10, and is pumped to the outside of the pump body 3 by the impeller 5, avoiding the debris from clogging the cutting hole and the inside of the pump body 3, thereby realizing a highly efficient crushing and sewage discharge process.

[0023] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0024] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A crushing and cutting device on a cutting type water pump, comprising a cutting disc (1), a cutting head (2), a pump body (3), a motor shaft (4), an impeller (5), a fastening screw (6), a blade (9), and a cutting edge (10), characterized in that: The cutting head (2) is connected to the motor shaft (4) by an embedded fastening screw (6). The surface of the cutting disc (1) is arranged in an inner ring of cutting holes (7) and an outer ring of cutting holes (8) with the center as the origin. The pump body (3) is provided with an annular sliding groove at the water inlet. The cutting disc (1) is fixed to the pump body (3) by fastening screws. The motor shaft (4) passes through the pump body (3) and is locked to the cutting head (2) by fastening screw (6).

2. The crushing and cutting device on a cutting type water pump according to claim 1, characterized in that: The fastening screw (6) is fully embedded in the cutting head (2), and the outer surface of the fastening screw (6) does not protrude from the end face of the cutting head (2).

3. The crushing and cutting device on a cutting type water pump according to claim 1, characterized in that: The inner ring cutter hole (7) and the outer ring cutter hole (8) are inclined at an angle to the plane of the cutting disc (1). The inclination direction of the inner ring cutter hole (7) and the outer ring cutter hole (8) is consistent with the rotation direction of the impeller (5). The ratio of the number of inner ring cutter holes (7) to the number of outer ring cutter holes (8) is 1:

2. The diameter of the inner ring cutter hole (7) and the outer ring cutter hole (8) are different.

4. The crushing and cutting device on a cutting type water pump according to claim 1, characterized in that: The cutting head (2) consists of three blades (9), and the gap between the cutting edge (10) of the blade (9) and the cutting edge 10 of the cutting hole of the cutting disc (1) is 0.1-0.2mm.

5. The crushing and cutting device on a cutting type water pump according to claim 1, characterized in that: The cutting disc (1) and the cutting head (2) are made of 304 stainless steel.

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