Pump structure for cleaning machine and cleaning machine

Abstract

The utility model belongs to the technical field of kitchen appliances, and discloses a pump structure for a cleaning machine and the cleaning machine. The pump structure for the cleaning machine comprises a shell which is hollow inside and forms a water pumping cavity, and the shell is provided with a water inlet and a water outlet. The pump structure further comprises a driving mechanism and a cutting part, the driving mechanism is arranged on the shell and provided with an impeller, and the impeller is located in the water pumping cavity and arranged to be capable of rotating relative to the water pumping cavity so as to pump cleaning water from the water inlet to the water outlet. The cutting piece is rotatably connected to the driving mechanism, the extension direction of the rotating axis is consistent with the extension direction of the rotating axis of the impeller, and the cutting piece rotates to cover the water inlet with the projection of the covered area on the plane where the water inlet is located in the extension direction of the rotating axis. The pump structure can drive the cutting piece to crush large-particle residues at the same time, the pump structure is prevented from being damaged due to blockage of the large-particle residues, the cleaning machine is compact in structure, and the production cost of the cleaning machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a pump structure for a cleaning machine and the cleaning machine. Background Art

[0002] A dishwasher is a cleaning device that automatically washes tableware such as bowls, chopsticks, plates, dishes, knives, and forks. The tableware is placed in the sink, and cleaning water is sprayed into the cleaning chamber through a rotatable spray arm. The cleaning water cleans the tableware, and the used cleaning water is discharged through a drain pump. However, the space in the cleaning chamber is large, and there will be residual large particles of residue entering the drain pump with the cleaning water, affecting the drainage performance of the drain pump, causing the drainage efficiency to decrease; in severe cases, it will block the drain pump and cause damage to the drain pump. Some dishwashers will install a crushing knife in the sink to pre-treat impurities. However, the space in the sink is effective, and the crushing knife needs to be driven by a motor. Installing a crushing knife will affect the effective cleaning space, and the power structure is complicated, increasing the production cost of the dishwasher. Utility Model Content

[0003] One purpose of the utility model is to provide a pump structure for a washing machine, which can solve the problems that the existing drainage pump is easily blocked and damaged by large particles of residue, and the installation of the crushing knife takes up a lot of space and has a complex structure, thereby increasing the production cost of the dishwasher.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A pump structure for a cleaning machine is provided, comprising a housing, wherein the interior of the housing is hollow to form a pump water cavity, and the housing also has a water inlet and a water outlet. The pump structure for the cleaning machine also includes:

[0006] a driving mechanism, disposed on the housing and having an impeller, wherein the impeller is located in the water pump cavity and is arranged to be rotatable relative to the water pump cavity so as to pump the cleaning water from the water inlet to the water outlet;

[0007] The cutting member is rotatably connected to the driving mechanism, and the extension direction of the rotation axis is consistent with the extension direction of the rotation axis of the impeller, and the cutting member rotates to cover the water inlet along the projection of the extension direction of the rotation axis on the plane where the water inlet is located.

[0008] In one embodiment, the shell includes a base and a cover shell arranged on a first side of the base, the driving mechanism also has a driver, the driver is arranged on a second side of the base, and the output shaft of the driver extends toward the first side of the base and passes through the cover shell, and the impeller and the cutting element are coaxially connected to the output shaft of the driver.

[0009] In one embodiment, the cover shell has a cover plate and an annular wall plate connected to the base and hollow inside, a portion of the cover plate has a notch to form the water inlet, and the water outlet is opened on the annular wall plate.

[0010] In one embodiment, the water outlet and the cover plate are arranged on the same side adjacent to the annular wall plate, so that the water inlet is formed on the other side of the annular wall plate.

[0011] In one embodiment, the impeller has at least two blades arranged at intervals in the circumferential direction along the rotation axis, and a gap is left between two adjacent blades to separate the pump water chamber as a whole into at least two water passage chambers. When the impeller is in a rotating state, the water passage chamber is successively connected to the water inlet and the discharge outlet.

[0012] In one embodiment, the cutting member has a rotating seat, the rotating seat is connected to the output shaft of the driver, and a cutting blade extending radially outward is arranged on the outer periphery of the rotating seat.

[0013] In one embodiment, at least two cutting blades are provided, and the cutting blades are spaced apart along the circumference of the rotating seat, and the cutting edges of the cutting blades face the same direction in the rotation direction of the rotating seat.

[0014] In one embodiment, the housing has a casing for accommodating the impeller, the casing includes a cover plate and an internal hollow annular wall plate, and a gap is provided between the cutting blade and the cover plate along the extension direction of the rotation axis; and / or,

[0015] The cutting blade is arranged to be inclined relative to the circumference of the rotating seat.

[0016] In one of the embodiments, a locking nut is further provided at the end of the output shaft of the driver to limit the detachment of the rotating seat.

[0017] Another object of the utility model is to provide a cleaning machine, which has a pump structure capable of simultaneously driving a cutting member to crush large particles of residue, thereby preventing the pump structure from being damaged due to clogging by large particles of residue. The cleaning machine has a compact structure and is easy to use.

[0018] To achieve this purpose, the utility model adopts the following technical solutions on the other hand:

[0019] A cleaning machine is provided, comprising a pump structure for a cleaning machine as described above, wherein the cleaning machine also has a cleaning chamber, a bottom wall plate of the cleaning chamber is provided with a water cup member for discharging cleaning water, the shell is assembled on the water cup member, and the impeller is located on the flow path of the cleaning water in the water cup member.

[0020] Beneficial effects of the utility model:

[0021] The pump structure for a cleaning machine provided by the utility model includes a driving mechanism and a cutting piece. The driving mechanism is arranged on the housing and has an impeller, which is located in the pump water chamber and is arranged to be rotatable relative to the pump water chamber, so as to pump the cleaning water from the water inlet to the water outlet. The impeller rotates continuously to form a continuous pumping force, so that the cleaning water is discharged continuously; the cutting piece is rotatably connected to the driving mechanism, and the extension direction of the rotation axis is consistent with the extension direction of the rotation axis of the impeller, and the cutting piece rotates to cover the water inlet along the extension direction of the rotation axis. The projection of the plane where the water inlet is located covers the water inlet. In this way, the driving force of the driving mechanism can be cleverly utilized to provide a cutting torque for the cutting piece while pumping and discharging the cleaning water, without the need to set up an additional power source for the cutting piece, simplifying the structure and reducing the production cost of the cleaning machine. The cutting piece is arranged at the water inlet without occupying the rest of the space in the cleaning machine, thereby ensuring that the cleaning water entering the water inlet can be filtered and cut for large particles of impurities, preventing large particles of residue from entering the pump water cavity and causing blockage and damage to the pump structure, thereby ensuring the water pumping efficiency of the pump structure and increasing the service life of the pump structure.

[0022] The cleaning machine provided by the utility model includes the above-mentioned pump structure, and the cleaning water is pumped from the water inlet to the water outlet through the impeller of the pump structure. The cutting member of the pump structure is rotatably connected to the driving mechanism, and the extension direction of the rotation axis is consistent with the extension direction of the rotation axis of the impeller. Moreover, the cutting member rotates to cover the water inlet along the projection of the extension direction of the rotation axis on the plane where the water inlet is located. The driving force of the driving mechanism is cleverly used to provide cutting torque for the cutting member while pumping and discharging the cleaning water, simplifying the structure, reducing the production cost of the cleaning machine, and not needing to occupy the remaining space in the cleaning machine, ensuring that the cleaning water entering the water inlet can be filtered and cut for large particle impurities, preventing large particle residues from entering the pump water cavity to cause blockage and damage to the pump structure, and improving the reliability and convenience of the cleaning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a pump structure for a cleaning machine provided by an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the disassembly of a pump structure for a cleaning machine provided by an embodiment of the utility model;

[0025] Figure 3 This is a structural front view of the impeller provided in the embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of partial structural disassembly of a cleaning machine provided by an embodiment of the utility model.

[0027] In the figure:

[0028] 1. Shell; 11. Pump water chamber; 111. Water passage chamber; 12. Water inlet; 13. Water outlet; 14. Base; 15. Cover; 151. Cover plate; 152. Ring wall plate;

[0029] 2. driving mechanism; 21. impeller; 211. blades; 22. driver; 221. output shaft;

[0030] 3. Cutting piece; 31. Rotating seat; 32. Cutting blade; 33. Locking nut;

[0031] 100. Cleaning chamber; 101. Water cup. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] like Figures 1 to 3 As shown, the embodiment of the utility model first provides a pump structure for a cleaning machine, the pump structure includes a housing 1, the interior of the housing 1 is hollow to form a pump water chamber 11, the housing 1 also has a water inlet 12 and a water outlet 13, the cleaning water to be discharged enters the pump water chamber 11 from the water inlet 12, and is finally discharged from the water outlet 13. The pump structure for a cleaning machine also includes a driving mechanism 2 and a cutting member 3. The driving mechanism 2 is arranged on the housing 1 and has an impeller 21, the impeller 21 is located in the pump water chamber 11 and is arranged to be rotatable relative to the pump water chamber 11, so as to pump the cleaning water from the water inlet 12 to the water outlet 13. The impeller 21 rotates continuously, forming a continuous pumping force, so that the cleaning water is discharged continuously.

[0037] The cutting member 3 is rotatably connected to the driving mechanism 2, and the extension direction of the rotation axis is consistent with the extension direction of the rotation axis of the impeller 21. Moreover, the cutting member 3 rotates to cover the area along the extension direction of the rotation axis, and the projection of the plane where the water inlet 12 is located covers the water inlet 12. In this way, the driving force of the driving mechanism 2 can be cleverly utilized to provide a cutting torque for the cutting member 3 while pumping and discharging the cleaning water. There is no need to set up an additional power source for the cutting member 3, simplifying the structure and reducing the production cost of the cleaning machine. The cutting member 3 is set at the water inlet 12, and the cutting member 3 rotates to cover the area along the extension direction of the rotation axis, and the projection of the plane where the water inlet 12 is located covers the water inlet 12. It does not need to occupy the rest of the space in the cleaning machine, ensuring that the cleaning water entering the water inlet 12 can be filtered and cut for large particles of impurities, preventing large particles of residue from entering the pump water chamber 11 to cause blockage and damage to the pump structure, ensuring the pumping efficiency of the pump structure, and improving the service life of the pump structure. In addition, the cutting member 3 and the impeller 21 are arranged so that, during the flow of the cleaning water, the rotation of the cutting member 3 will not hinder the cleaning water, thereby avoiding affecting the water inlet efficiency of the water inlet 12 .

[0038] Optionally, the housing 1 includes a base 14 and a cover 15 disposed on a first side of the base 14, and the driving mechanism 2 further includes a driver 22, the driver 22 is disposed on a second side of the base 14, and an output shaft 221 of the driver 22 extends toward the first side of the base 14 and penetrates the cover 15. The impeller 21 and the cutting element 3 are both coaxially connected to the output shaft 221 of the driver 22. The driver 22 can be a motor, which directly converts the rotation of the motor into the rotation of the impeller 21 and the cutting element 3.

[0039] The housing 15 has a cover plate 151 and a hollow annular wall plate 152 connected to the base 14. A portion of the cover plate 151 has a notch to form a water inlet 12, and a water outlet 13 is provided on the annular wall plate 152. The cover plate 151 shields part of the pump water chamber 11, and the unshielded part forms the water inlet 12, so that the water inlet 12 is connected to the pump water chamber 11, and the cleaning water to be discharged enters the pump water chamber 11 through the water inlet 12 under the action of the impeller 21.

[0040] Optionally, the water outlet 13 and the cover plate 151 are arranged on the same side adjacent to the annular wall plate 152, so that the water inlet 12 is formed on the other side of the annular wall plate 152. This arrangement ensures that the impeller 21 rotates a certain angle from the water inlet 12 to the water outlet 13 to form sufficient pumping force.

[0041] In order to achieve a better pumping effect, the impeller 21 has at least two blades 211 arranged at intervals along the circumferential direction of the rotation axis, and there is a gap between two adjacent blades 211, so as to separate the pump water chamber 11 as a whole to form at least two water passage chambers 111. When the impeller 21 is in a rotating state, the water passage chamber 111 is successively connected with the water inlet 12 and the water outlet 13. When the pump structure is working, the flowing cleaning water enters the water passage chamber 111 which is not covered and closed by the cover plate 151 through the water inlet 12. As the impeller 21 rotates around the rotation axis, the water passage chamber 111 is transformed from being connected to the water inlet 12 to being connected to the water outlet 13, and the cleaning water can only be discharged through the water outlet 13; the impeller 21 continues to rotate, the water passage chamber 111 is separated from the cover of the cover plate 151 and is connected again, and the cleaning water to be discharged in the water passage chamber 111 enters again, and the cycle is repeated until all the cleaning water is discharged.

[0042] Optionally, the impeller 21 is made of rubber, which has excellent resilience and wear resistance, which is beneficial to improving the service life of the impeller 21. Optionally, the rubber used to make the impeller 21 can be processed by a high-temperature vulcanization process to improve the high-temperature resistance of the impeller 21, and is suitable for high-temperature cleaning environments. The inner side of the annular wall plate 152 forms a raised special-shaped area near the water outlet 13. When the impeller 21 rotates to the special-shaped area near the water outlet 13, it is squeezed and slightly deformed, generating a pumping force, so that the water chamber 111 has a one-way flow, and the cleaning water in the water chamber 111 can only be discharged through the water outlet 13, avoiding backflow of the pump structure.

[0043] Specifically, the cutting member 3 has a rotating seat 31, which is connected to the output shaft 221 of the driver 22, and the outer periphery of the rotating seat 31 is provided with a cutting blade 32 extending radially outward, which is convenient for installing the cutting member 3. When the output shaft 221 of the driver 22 rotates, the cutting member 3 rotates at the same time, and the cutting blade 32 can cut and process impurities such as food residues remaining in the washing water to prevent larger particles of impurities from entering the pump structure. Optionally, the end of the output shaft 221 of the driver 22 is also provided with a locking nut 33 that limits the detachment of the rotating seat 31, which is convenient for installing and limiting the rotating seat 31 on the output shaft 221 of the driver 22 to prevent the cutting member 3 from detaching from the output shaft 221.

[0044] Furthermore, along the extension direction of the rotation axis, there is a gap between the cutting blade 32 and the cover plate 151, which can reduce the friction during the rotation of the cutting blade 32 and prevent the cutting blade 32 from damaging the housing 1.

[0045] In order to achieve a better cutting effect, at least two cutting blades 32 are provided, and each cutting blade 32 is arranged at intervals along the circumference of the rotating seat 31, and the cutting edges of each cutting blade 32 are oriented in the same direction in the rotation direction of the rotating seat 31. Optionally, the cutting blade 32 is arranged to be inclined relative to the circumference of the output shaft 221 of the driver 22 to reduce the shear load of the cutting blade 32 and prevent impurities such as cleaning water and food residues from vertically contacting the cutting blade 32 to generate a large impact force on the output shaft 221 of the driver 22.

[0046] The utility model also provides a cleaning machine. Figure 4As shown, the cleaning machine includes the pump structure for the cleaning machine as described above, and the cleaning machine also has a cleaning chamber 100, the bottom wall plate of the cleaning chamber 100 is provided with a water cup 101 for discharging cleaning water, the housing 1 is assembled on the water cup 101, and the impeller 21 is located on the flow path of the cleaning water in the water cup 101. The used cleaning water in the cleaning chamber 100 enters the water cup 101 and flows along the flow path to the pump structure. The impeller 21 of the pump structure is located in the pump water chamber 11 and is arranged to be rotatable relative to the pump water chamber 11, so as to pump the cleaning water from the water inlet 12 to the water outlet 13. The cutting piece 3 is rotatably connected to the driving mechanism 2, and the extension direction of the rotation axis is consistent with the extension direction of the rotation axis of the impeller 21. Moreover, the cutting piece 3 rotates to cover the water inlet 12 along the projection of the extension direction of the rotation axis on the plane where the water inlet 12 is located, thereby cleverly utilizing the driving force of the driving mechanism 2 to provide a cutting torque for the cutting piece 3 while pumping and discharging the cleaning water, simplifying the structure, reducing the production cost of the cleaning machine, and not needing to occupy the remaining space in the cleaning machine, ensuring that the cleaning water entering the water inlet 12 can be filtered and cut for large particles of impurities, preventing large particles of residue from entering the pump water chamber 11 to cause blockage and damage to the pump structure, thereby improving the reliability and convenience of the cleaning machine.

[0047] Washing machines include but are not limited to dishwashers.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A pump structure for a cleaning machine, comprising a housing (1), wherein the interior of the housing (1) is hollow to form a pump water chamber (11), and the housing (1) also has a water inlet (12) and a water outlet (13), characterized in that: The pump structure for the cleaning machine also includes: a driving mechanism (2) disposed on the housing (1) and having an impeller (21), wherein the impeller (21) is located in the water pump chamber (11) and is arranged to be rotatable relative to the water pump chamber (11) so as to pump cleaning water from the water inlet (12) to the water outlet (13); The cutting member (3) is rotatably connected to the driving mechanism (2), and the extension direction of the rotation axis is consistent with the extension direction of the rotation axis of the impeller (21), and the cutting member (3) rotates to cover an area whose projection along the extension direction of the rotation axis on the plane where the water inlet (12) is located covers the water inlet (12).

2. The pump structure for a cleaning machine according to claim 1, characterized in that: The housing (1) comprises a base (14) and a cover shell (15) arranged on a first side of the base (14); the driving mechanism (2) further comprises a driver (22); the driver (22) is arranged on a second side of the base (14); an output shaft (221) of the driver (22) extends toward the first side of the base (14) and passes through the cover shell (15); the impeller (21) and the cutting element (3) are both coaxially connected to the output shaft (221) of the driver (22).

3. The pump structure for a cleaning machine according to claim 2, characterized in that: The cover shell (15) comprises a cover plate (151) and an annular wall plate (152) connected to the base (14) and having a hollow interior. A portion of the cover plate (151) has a notch to form the water inlet (12), and the water outlet (13) is provided on the annular wall plate (152).

4. The pump structure for a cleaning machine according to claim 3, characterized in that: The water outlet (13) and the cover plate (151) are arranged on the same side adjacent to the annular wall plate (152), so that the water inlet (12) is formed on the other side of the annular wall plate (152).

5. The pump structure for a cleaning machine according to any one of claims 1 to 4, characterized in that: The impeller (21) has at least two blades (211) arranged at intervals in the circumferential direction along the rotation axis, and a gap is left between two adjacent blades (211) so as to separate the pump water chamber (11) as a whole to form at least two water passage chambers (111). When the impeller (21) is in a rotating state, the water passage chamber (111) is successively connected to the water inlet (12) and the water outlet (13).

6. The pump structure for a cleaning machine according to claim 2, characterized in that: The cutting member (3) has a rotating seat (31), the rotating seat (31) is connected to the output shaft (221) of the driver (22), and a cutting blade (32) extending radially outward is arranged on the outer periphery of the rotating seat (31).

7. The pump structure for a cleaning machine according to claim 6, characterized in that: At least two cutting blades (32) are provided, and the cutting blades (32) are arranged at intervals along the circumference of the rotating seat (31), and the cutting edges of the cutting blades (32) face the same direction in the rotating direction of the rotating seat (31).

8. The pump structure according to claim 7, characterized in that: The housing (1) has a casing (15) for accommodating the impeller (21), the casing (15) comprising a cover plate (151) and an internally hollow annular wall plate (152), and a gap is provided between the cutting blade (32) and the cover plate (151) along the extension direction of the rotation axis; and / or, The cutting blade (32) is arranged to be inclined relative to the circumference of the rotating seat (31).

9. The pump structure for a cleaning machine according to claim 6, characterized in that: A locking nut (33) for limiting the disengagement of the rotating seat (31) is also provided at the end of the output shaft (221) of the driver (22).

10. A cleaning machine, characterized in that: The pump structure for a cleaning machine comprises a pump structure for a cleaning machine as described in any one of claims 1 to 9, wherein the cleaning machine also has a cleaning chamber (100), the bottom wall plate of the cleaning chamber (100) is provided with a water cup member (101) for discharging cleaning water, the housing (1) is assembled on the water cup member (101), and the impeller (21) is located on the flow path of the cleaning water in the water cup member (101).

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