Drainage filtering device of washing equipment and washing equipment

Abstract

The invention discloses a drainage filtering device of washing equipment and the washing equipment, and the drainage filtering device comprises a pump assembly which is provided with an impeller; an impeller cavity and a filtering cavity which are communicated are formed in the shell, the impeller is rotatably arranged in the impeller cavity, a water outlet is formed in the cavity wall of the impeller cavity, and a water inlet is formed in the cavity wall of the filtering cavity; the anvil cylinder is installed in the filtering cavity and is coaxial with the impeller, and a cutting avoiding groove surrounding the inner circumferential wall of the anvil cylinder in the circumferential direction is formed in the inner circumferential wall of the anvil cylinder; the cutting assembly is arranged in the anvil cylinder in a relatively rotating manner and is provided with a blade part arranged in the cutting avoiding groove; the filter plate is perpendicular to the axis of the anvil cylinder, arranged in the anvil cylinder and located between the cutting assembly and the end, close to the impeller cavity, of the anvil cylinder; when the pump assembly rotates at the rotating speed larger than the preset value, the cutting assembly is in transmission connection with the impeller, the impeller drives the cutting assembly to rotate, and the blade part slides along the cutting receding groove. According to the wire cutting device, the cutting assembly adopts a mode similar to a guillotine type sawing mode, and wire scraps can be cut off more easily.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and specifically relates to a drainage filtering device for a washing equipment and a washing equipment. Background Art

[0002] In existing washing equipment such as washing machines, a drainage pump is provided for draining water. Since lint inevitably mixes into the washing water after washing clothes, in order to protect the drainage pump, a lint filter is often provided on the drainage pipe between the drainage pump and the water storage barrel.

[0003] In the current solutions, most lint filters are devices located at the lower part of the front panel of the washing machine and in front of the drainage pump. Usually, they are installed and used as a component together with the drainage pump. It can effectively filter the longer and larger lint in the drained washing water, preventing these lint from winding around the impeller during the drainage process by the drainage pump, thereby affecting the drainage efficiency or increasing the drainage noise.

[0004] However, after a period of time, some lint will accumulate in the lint filter and needs to be processed regularly, otherwise it will also cause poor drainage. Especially for the washer-dryer, due to the long clothing processing time and a large amount of shed lint, it is more likely to be blocked. Generally, it is recommended to clean the lint filter once every drying cycle. And the cleaning operation of the lint filter is relatively complicated. Especially for the upper drainage structure, there is usually 400 - 600 milliliters of sewage remaining here. In order to prevent it from spilling onto the ground, it needs to be released in advance before cleaning. And this position is relatively low and there is no suitable container to receive this part of water, resulting in a cumbersome cleaning process.

[0005] In order to solve the problem of cumbersome lint cleaning operation in the above drainage filter, Chinese Patent No. 202110772312.4 discloses a washing machine drainage filter and a washing machine. The drainage filter includes: a filter core rotatably arranged in the housing; a first driving structure for driving the filter core to rotate; a key shaft for transmitting the driving force of the first driving structure to the filter core; a second driving structure for driving the key shaft to connect or disconnect the key shaft from the first driving structure; and a cutting member for cutting lint is provided on the filter core.

[0006] However, in the above solution, the cutting member is directly installed on the filter core, so that the cutting member actively impacts the lint during the rotation of the filter core, thereby cutting the lint. The principle of cutting lint is similar to that of a food processor. This cutting method requires the drainage pump motor to provide an extremely high rotational speed to cut the lint, but the motor with an extremely high rotational speed will have a significant increase in both cost and working noise, and there are certain difficulties in application.

[0007] In view of this, the present invention is specifically proposed. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a drainage filtering device for a washing device and a washing device, which can more easily cut the filtered lint so that the lint can be shredded and discharged.

[0009] The basic concept of the technical solution adopted by the present invention to solve the above technical problem is as follows:

[0010] A drainage filtering device for a washing device includes:

[0011] A pump assembly having an impeller;

[0012] A housing having a communicating impeller chamber and a filtering chamber inside. The impeller is rotatably arranged in the impeller chamber. A drain port is arranged on the chamber wall of the impeller chamber, and a water inlet is arranged on the chamber wall of the filtering chamber;

[0013] An anvil cylinder is installed in the filtering chamber and is coaxially arranged with the impeller. A circumferentially surrounding cutting avoidance groove is arranged on the inner peripheral wall of the anvil cylinder;

[0014] A cutting assembly is rotatably arranged inside the anvil cylinder and has a cutting edge part arranged in the cutting avoidance groove;

[0015] A filter plate is arranged perpendicular to the axis of the anvil cylinder inside the anvil cylinder and is located between the cutting assembly and the end of the anvil cylinder close to the impeller chamber;

[0016] When the pump assembly rotates at a speed greater than a preset value, the cutting assembly can be in transmission connection with the impeller, so that the impeller drives the cutting assembly to rotate, and the cutting edge part slides along the cutting avoidance groove.

[0017] In the present invention, the rotation speed of the pump assembly can be actively controlled to increase, so as to realize the cutting of lint. In another case, when the lint accumulates to a certain extent and causes poor drainage, the pump assembly rotates at a speed lower than the preset value, which can also trigger the transmission connection between the cutting assembly and the impeller, and then make the cutting assembly rotate, and the cutting edge part slides along the cutting avoidance groove to cut the lint.

[0018] Further, the impeller has an impeller shaft, and a plug hole facing the filtering chamber and opening towards the filtering chamber is arranged on the end surface of the impeller shaft close to the filtering chamber;

[0019] One end of a transmission shaft is connected to the side of the filter plate facing the impeller chamber, and the other end of the transmission shaft can be inserted into the plug hole and is in circumferential limit fit with the plug hole;

[0020] The cutting assembly has connecting columns and blades; one end of each connecting column is connected to the side of the filter plate facing away from the impeller chamber. There are two connecting columns, which are symmetrically arranged relative to the axis of the anvil cylinder, and blades are arranged on both connecting columns.

[0021] The blades extend bent towards the inner peripheral wall of the anvil cylinder from the connecting columns. The blades on the two connecting columns are centrosymmetrically arranged relative to the axis of the anvil cylinder, and the cutting edge is formed on the side where the blade bends and protrudes.

[0022] Further, the blades on the two connecting columns bend and protrude in opposite directions, and an elastic sheet with a certain length is clamped between the two blades.

[0023] Further, a plurality of cutting avoidance grooves are arranged at intervals along the axial direction of the anvil cylinder. A number of blades are arranged on the connecting columns, corresponding to the cutting avoidance grooves one by one.

[0024] Preferably, the interval distance between adjacent two cutting avoidance grooves gradually increases along the direction away from the filter plate.

[0025] Further, a number of sleeves are sleeved on the connecting columns, and the blades are clamped between the ends of adjacent two sleeves.

[0026] Further, relatively fixed magnetic members are arranged in the housing, and the anvil cylinder is connected with magnetic attraction members that can be attracted by the magnetic members; the anvil cylinder is axially movably arranged in the filter chamber, and a circumferential limiting structure is arranged between the outer peripheral wall of the anvil cylinder and the inner wall of the filter chamber.

[0027] When the pump assembly rotates at a speed greater than a preset value, the anvil cylinder moves towards the direction close to the impeller chamber against the magnetic attraction force between the magnetic members and the magnetic attraction members, driving the cutting assembly to move synchronously with the anvil cylinder and be in transmission connection with the impeller.

[0028] When the pump assembly rotates at a speed less than or equal to the preset value, the anvil cylinder moves towards the direction away from the impeller chamber under the action of the magnetic attraction force between the magnetic members and the magnetic attraction members, driving the cutting assembly to separate from the impeller.

[0029] Preferably, a limiting groove / limiting rib extending parallel to the axis of the anvil cylinder is arranged on the inner wall of the filter chamber, and a limiting rib / limiting groove extending along the axial direction is correspondingly arranged on the outer peripheral wall of the anvil cylinder.

[0030] Further, a transition chamber is arranged between the impeller chamber and the filter chamber. The radial dimension of the impeller chamber and the radial dimension of the filter chamber are both larger than the radial dimension of the transition chamber.

[0031] The anvil cylinder includes a large-diameter section and a small-diameter section connected to each other. The large-diameter section is arranged in the filtration chamber, and the cutting avoidance grooves are arranged on its inner peripheral wall. The small-diameter section is inserted into the transition chamber, and the filter plate is arranged at the junction of the large-diameter section and the small-diameter section.

[0032] Further, a positioning portion protruding from the outer peripheral wall is arranged at one end of the anvil cylinder away from the impeller chamber. An annular groove is arranged on the inner peripheral wall of the filtration chamber, and the positioning portion is axially movably arranged in the annular groove.

[0033] Further, a foreign object interception plate is arranged at one end of the anvil cylinder away from the impeller chamber, and a plurality of water-permeable holes are formed in the foreign object interception plate;

[0034] The foreign object interception plate is arranged at an interval from one end of the filtration chamber away from the impeller chamber, and the water inlet is arranged on the side wall of the filtration chamber, between the foreign object interception plate and the end of the filtration chamber away from the impeller chamber;

[0035] Preferably, the aperture of the water-permeable hole facing the side where the water inlet is located is larger than the aperture of the water-permeable hole facing away from the side where the water inlet is located;

[0036] Preferably, the magnetic member is arranged at one end of the filtration chamber away from the impeller chamber; one side of the foreign object interception plate facing the direction where the water inlet is located is connected with a connecting member having a certain length in the axial direction, and the magnetic attracting member is arranged at one end of the connecting member away from the foreign object interception plate.

[0037] A washing device includes the drainage filtration device of the above-mentioned washing device.

[0038] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art.

[0039] In the present invention, the cutting edge of the cutting assembly slides along the cutting avoidance groove to cut the wire chips, adopting a cutting method similar to a guillotine sawing. When the wire chips are across the cutting avoidance groove, the cutting avoidance groove provides support for the wire chips. Furthermore, when the cutting edge of the cutting assembly passes by, it is easier to apply a shearing force to the wire chips, so that the wire chips are more easily cut off. In this way, the pump assembly can provide a lower rotational speed and can also ensure the cutting efficiency of the wire chips.

[0040] In the present invention, by applying pressure to the blade through the elastic piece, the cutting edge of the blade closely adheres to the cutting avoidance and slides as it rotates, and it is possible to more easily cut off the wire chips. The interval distance between the cutting avoidance grooves gradually increases in the direction away from the filter plate, matching the trend of the wire chips concentrating towards the direction where the filter plate is located, which is beneficial to more fully cutting and chopping the wire chips.

[0041] In the present invention, the anvil cylinder moves axially together with the cutting assembly without rotation, enabling the cutting edge of the cutting assembly to slide on the inner peripheral wall of the anvil cylinder, which can prevent the housing of the drainage filter device from being scratched and thinned over a long period, resulting in damage to the drainage filter device.

[0042] In the present invention, the foreign object interception plate can prevent large-sized hard foreign objects, such as coins, buttons, etc., from entering the space where the cutting assembly cuts wire debris, thereby avoiding damage to the cutting assembly or other related structures caused by the hard foreign objects. The aperture of the water-permeable holes on the foreign object interception plate becomes smaller along the water flow direction, causing the water flow to accelerate through. When one end of the wire debris in the water enters the water-permeable hole, the wire debris will be driven to quickly pass through due to the accelerated water flow and will not get stuck at the water-permeable hole to cause blockage.

[0043] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0044] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other accompanying drawings based on these drawings without creative efforts. In the drawings:

[0045] Figure 1 is a sectional view of the drainage filter device along the axis in the embodiment of the present invention (normal drainage state);

[0046] Figure 2 is a sectional view of the drainage filter device along the axis in the embodiment of the present invention (wire debris cutting state);

[0047] Figure 3 is the drainage filter device in the embodiment of the present invention along Figure 1 a sectional view in the direction of section A-A;

[0048] Figure 4 is a schematic diagram of the blade in the embodiment of the present invention;

[0049] Figure 5 is a three-dimensional schematic diagram of the elastic sheet in the embodiment of the present invention;

[0050] Figure 6 is a schematic diagram of a guillotine cutting an object.

[0051] In the figure: 1, object; 2, guillotine; 3, tool avoidance groove; 4, tool holder;

[0052] 100, Pump assembly; 110, Motor; 120, Impeller; 121, Insertion hole; 1211, Spline hole; 122, Impeller shaft; 123, Blade; 200, Housing; 210, Impeller chamber; 211, Drain port; 220, Transition chamber; 230, Filter chamber; 231, Limit groove; 232, Annular groove; 233, Water inlet; 310, Filter plate; 320, Foreign object interception plate; 321, Water permeable hole; 330, Foreign object collection basket; 410, Anvil cylinder; 411, Small diameter section; 412, Large diameter section; 4121, Limit rib; 4122, Cutting avoidance groove; 4123, Positioning part; 420, Blade; 421, Mounting hole; 422, Support port; 423, Blade edge; 430, Sleeve; 440, Elastic sheet; 441, Notch; 450, Connecting column; 510, Transmission shaft; 511, Spline shaft; 521, Connector; 522, Magnetic part; 523, First heat insulation part; 600, End cover; 610, Extension cylinder; 620, Second heat insulation part; 630, Magnetic part; 640, Knob; 650, Seal.

[0053] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0054] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0055] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0056] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Such as Figures 1 to 5As shown, an embodiment of the present invention provides a drainage filter device for a washing device, and a washing device having the drainage filter device. The washing device may be a washing machine, a washer-dryer, a care machine, or other household appliances with a clothes washing function.

[0058] Specifically, the drainage filter device in the embodiment of the present invention is arranged in the drainage system of the washing equipment, and has a pump assembly 100 for providing drainage power, and a lint filter unit arranged upstream of the pump assembly 100. The pump assembly 100 includes a motor 110 and an impeller 120, and the motor 110 drives the impeller 120 to rotate to provide drainage power. The lint filter unit is arranged upstream of the pump assembly 100, so that longer and larger lint can be intercepted from the washing water to prevent these lint from contacting or even entangled with the impeller 120, which affects the drainage efficiency.

[0059] After a period of use, wire scraps will accumulate at the wire scrap filter unit. In order to save the user from manually cleaning the wire scraps, the drainage filter device of this embodiment further has a wire scrap cutting unit. The wire scrap cutting unit can cut the wire scraps accumulated at the wire scrap filter unit into finer and smaller wire scraps, so that they can pass through the wire scrap filter unit and be discharged from the washing device together with the washing water. At the same time, since the wire scraps have been cut off by the wire scrap cutting unit, the problem of wire scraps being entangled on the impeller 120 and affecting the drainage efficiency will not occur.

[0060] As a specific implementation, the drainage filter device of this embodiment includes a housing 200, and an impeller chamber 210 and a filter chamber 230 are interconnected inside the housing 200. The impeller 120 is rotatably disposed in the impeller chamber 210, and the lint filter unit is disposed in the filter chamber 230. A water inlet 233 is disposed on the cavity wall of the filter chamber 230, and a drainage port 211 is disposed on the cavity wall of the impeller chamber 210.

[0061] In a more specific structure, the housing 200 extends along the axial direction of the impeller 120 to have a certain length, the motor 110 of the pump assembly 100 is arranged outside the housing 200, located at one end where the impeller chamber 210 is located, and the output end of the motor 110 is connected to the impeller shaft 122 of the impeller 120. The water inlet 233 on the housing 200 is connected to the water storage drum of the washing device through a pipeline, and the drain port 211 is arranged on the side wall of the impeller chamber 210, and the washing water is discharged to the outside of the washing device through the drain port 211 connected to the hose.

[0062] When the washing device is draining, the motor 110 starts to drive the impeller 120 to rotate. The blades 123 of the impeller 120 rotate in the impeller chamber 210 to provide drainage power, thereby drawing washing water through the water inlet 233, allowing the washing water to pass through the lint filter unit in the filter chamber 230 to separate longer and larger lint from the water. The washing water without coarse lint eventually enters the impeller chamber 210, is discharged from the drain port 211, and is discharged from the washing device along the hose connected to the drain port 211.

[0063] In a further embodiment, the wire scrap cutting unit includes a cutting assembly, which is rotatably disposed in the filter chamber 230 of the housing 200 and can be in transmission connection with the impeller 120. The impeller 120 is driven to rotate by the motor 110, thereby driving the cutting assembly to rotate, so that the wire scraps accumulated at the wire scrap filtering unit can be cut off.

[0064] As a specific embodiment, the filter chamber 230 is installed with an anvil 410 coaxially arranged with the impeller 120, and a cutting avoidance groove 4122 is arranged on the inner peripheral wall of the anvil 410 in a circumferential direction. The cutting assembly is relatively rotatably arranged inside the anvil 410, and has a blade portion arranged in the cutting avoidance groove 4122 for cutting wire scraps. The wire scrap filtering unit includes a filter plate 310, which is arranged inside the anvil 410 perpendicular to the axis of the anvil 410 and is located at the end of the cutting assembly and the anvil 410 close to the impeller chamber 210 (i.e. Figure 1 between the left end of .

[0065] In a detailed structure, the cutting assembly includes a blade 420 , and the cutting portion is a cutting edge 423 of the blade 420 .

[0066] In this embodiment, the filter plate 310 has a plurality of filter holes for washing water to pass through. When the washing device is drained, the washing water enters the filter chamber 230 from the water inlet 233 and flows from right to left through the filter plate 310. The coarse and long wire scraps in the water are intercepted on the right side of the filter plate 310 and will not contact the impeller 120 on the left. When the wire scraps need to be cleaned, the impeller 120 rotates to drive the cutting assembly to rotate, and the blade 423 of the blade 420 can slide along the cutting avoidance groove 4122, thereby cutting off the wire scraps lying across the cutting avoidance groove 4122.

[0067] This embodiment adopts the above solution, and the blade 420 cuts the wire scraps in a cutting manner similar to a guillotine sawing. Figure 6, one end of the guillotine 2 is rotatably installed on the tool rest 4. When using the guillotine 2 to cut an object 1, the object 1 to be cut lies across the tool avoidance groove 3 formed by the tool rest 4. When the guillotine 2 rotates downward and presses down, since the tool rest 4 provides support on both sides of the tool avoidance groove 3 under the object 1 to be cut, after the guillotine 2 contacts the object 1, it is easier to apply a shearing force to the object 1, thereby cutting off the object 1.

[0068] The solution of this embodiment utilizes the cooperation between the blade 420 and the cutting avoidance groove 4122 to cut off the wire chips. The cutting avoidance groove 4122 is equivalent to the above-mentioned tool avoidance groove 3. At the same time, since the cutting edge 423 of the blade 420 slides along the cutting avoidance groove 4122 instead of simply pressing down into the cutting avoidance groove 4122, and also borrows the principle of saw blade pulling for cutting, it is easier to cut off the wire chips. In this way, the drainage and filtration device of this embodiment can enable the cutting assembly to fully cut off the wire chips at a lower rotational speed, without the need for the pump assembly 100 to provide an extremely high rotational speed, which is beneficial to reducing the cost and working noise of the motor 110, and at the same time can ensure the cutting efficiency of the wire chips.

[0069] In a further solution, the cutting assembly in this embodiment can be separated from the impeller 120, so that during normal drainage, the impeller 120 rotates while the cutting assembly does not rotate, avoiding increasing additional drainage resistance. Only when it is necessary to clean the wire chips, the cutting assembly is in transmission connection with the impeller 120, so as to rotate synchronously with the impeller 120 to cut off the wire chips.

[0070] As a specific implementation manner, a relatively fixed magnetic member 630 is arranged in the housing 200, and the anvil cylinder 410 is connected with a magnetic attraction member 522, and the magnetic attraction member 522 can be attracted by the magnetic attraction force generated by the magnetic member 630 on it. The anvil cylinder 410 is axially movably arranged in the filtration chamber 230, and a circumferential limiting structure is arranged between the outer peripheral wall of the anvil cylinder 410 and the inner wall of the filtration chamber 230.

[0071] The motor 110 of the pump assembly 100 can output different rotational speeds. It can be understood that the greater the rotational speed of the pump assembly 100, that is, the rotational speed of the impeller 120, the greater the drainage flow rate, and thus the greater the leftward acting force provided by the water flow on the filter plate 310 and the anvil cylinder 410.

[0072] When the pump assembly 100 rotates at a speed greater than a preset value, the anvil cylinder 410 can move towards the impeller cavity 210 under the action of water flow, overcoming the magnetic attraction between the magnetic part 522 and the magnetic member 630, thereby driving the cutting assembly to move synchronously with the anvil cylinder 410 and achieving a transmission connection with the impeller 120. In this way, the cutting assembly can rotate with the impeller 120, causing the blade 420 to rotate inside the anvil cylinder 410. Since there is a circumferential limiting structure between the anvil cylinder 410 and the housing 200 and it will not rotate, the cutting edge 423 of the blade 420 can slide along the cutting avoidance groove 4122 to cut off the wire chips.

[0073] When the pump assembly 100 rotates at a speed less than or equal to the preset value, the water flow driving force received by the anvil cylinder 410 decreases. Then, the magnetic member 630 can use the magnetic attraction to attract the magnetic part 522 to move to the right, driving the anvil cylinder 410 to move away from the impeller cavity 210 to the right, separating the cutting assembly from the impeller 120.

[0074] It should be noted that the drainage and filtration device has the above structure. When the wire chips accumulate in the filtration cavity 230 to a certain extent, it will block the filtration holes on the filter plate 310 to a certain extent, causing poor drainage. At this time, if the pump assembly 100 rotates at a speed lower than the preset value, it will also generate sufficient attraction to the anvil cylinder 410, causing it to overcome the magnetic attraction and move to the left, thereby triggering the transmission connection between the cutting assembly and the impeller 120, enabling the cutting assembly to rotate with the impeller 120, the blade 420 to rotate inside the anvil cylinder 410, and the cutting edge 423 to slide along the cutting avoidance groove 4122 to cut off the wire chips.

[0075] The anvil cylinder 410 is arranged in the filtration cavity 230. The blade 420 can move left and right synchronously with the anvil cylinder 410 inside the anvil cylinder 410, enabling the transmission shaft 510 to be inserted into or separated from the insertion hole 121. If the anvil cylinder is not provided and instead a cutting avoidance groove for cooperating with the blade is directly arranged on the inner wall of the filtration cavity, since the cutting edge of the blade is in close fit with the cutting avoidance groove, it cannot move left and right, and thus the transmission shaft cannot be inserted into the insertion hole on the impeller shaft.

[0076] On the other hand, the anvil cylinder 410 separates the blade 420 from the inner wall of the housing 200. The blade 420 slides on the inner circumferential wall of the anvil cylinder 410, which can also prevent the housing 200 from being scratched and thinned for a long time, thereby avoiding the problem of damage to the drainage and filtration device.

[0077] In this embodiment, the magnetic member 630 can be a magnet or an electromagnet. The magnetic part 522 can be an iron, cobalt, nickel single substance or an alloy containing its components, or can also be a magnet.

[0078] As a specific implementation, to achieve the circumferential limit of the anvil cylinder 410 within the housing 200, a limit groove 231 extending along a direction parallel to the axis of the anvil cylinder 410 is provided on the inner wall of the filter chamber 230, and a limit rib 4121 extending axially is correspondingly provided on the outer peripheral wall of the anvil cylinder 410. In this way, the cooperation between the limit groove 231 and the limit rib 4121 can prevent the anvil cylinder 410 from rotating within the filter chamber 230, while not affecting the reciprocating movement of the anvil cylinder 410 along the axial direction.

[0079] As another specific implementation, the positions of the limit rib and the limit groove can be swapped. That is, a limit rib extending along a direction parallel to the axis of the anvil cylinder is provided on the inner wall of the filter chamber, and a limit groove extending axially is correspondingly provided on the outer peripheral wall of the anvil cylinder.

[0080] In a further solution, a plug hole 121 opening towards the filter chamber 230 is provided on the end face of the impeller shaft 122 of the impeller 120 close to the filter chamber 230. The left side of the filter plate 310 is connected to a transmission shaft 510, and the left end of the transmission shaft 510 can be inserted into the plug hole 121 and is in circumferential limit cooperation with the plug hole 121.

[0081] The cutting assembly further has a connecting column 450 extending parallel to the axis of the anvil cylinder 410. The left end of the connecting column 450 is connected to the right side surface of the filter plate 310, and the blade 420 is mounted on the connecting column 450.

[0082] As a specific implementation, the transmission shaft 510 is a spline shaft 511, and the plug hole 121 provided on the impeller shaft 122 is a spline hole 1211 matching the spline shaft 511. More specifically, a fixing hole is provided on the left side of the filter plate 310, and the right end of the spline shaft 511 is inserted and fixed in the fixing hole.

[0083] When the pump assembly 100 rotates at a speed greater than a preset value, the anvil cylinder 410 and the filter plate 310 move synchronously to the left, and the spline shaft 511 can be inserted into the spline hole 1211. At this time, the impeller 120 continues to rotate, and the filter plate 310 rotates synchronously with the impeller 120, and the blade 420 can be driven by the connecting column 450 to rotate in the anvil cylinder 410 to cut the wire chips.

[0084] Furthermore, two connecting columns 450 are provided, and they are symmetric with respect to the axis of the anvil cylinder 410. Blades 420 are provided on both connecting columns 450. The blade 420 bends and extends from the connecting column 450 towards the inner peripheral wall of the anvil cylinder 410, and is integrally in a crescent shape. The blades 420 on the two connecting columns 450 are symmetrically arranged with respect to the axis of the anvil cylinder 410, and the cutting edge 423 is located on the side where the blade 420 bends and protrudes, that is, the outer side of the crescent shape.

[0085] Furthermore, the blades 420 symmetrically arranged on the two connecting pillars 450 are bent and protruded in opposite directions, and an elastic sheet 440 with a certain length is clamped between the two blades 420 .

[0086] With the above structure, two symmetrically arranged blades 420 are supported by the elastic sheet 440, and a certain tension force is applied in advance to keep the two blades 420 away from each other, and the blade 423 abuts against the bottom of the cutting avoidance groove 4122, which can ensure long-term use without failure.

[0087] As a specific embodiment, the blade 420 has a mounting hole 421 at one end close to the axis of the anvil barrel 410, and the connecting column 450 is inserted into the mounting hole 421. The elastic sheet 440 is a thin strip that can be elastically deformed, has good elasticity, and can bend when subjected to force. Notches 441 are provided at both ends of the elastic sheet 440 in the length direction, and a support opening 422 is provided on the inner side of the crescent shape of the blade 420. The notch 441 at the end of the elastic sheet 440 is inserted into the support openings 422 of the two blades 420, so that the two blades 420 are separated from each other under the action of the elastic sheet 440.

[0088] In a specific structure, the cutting avoidance groove 4122 is an annular groove with a V-shaped cross section. Under the elastic force of the elastic sheet 440 , the blade 423 of the blade 420 abuts against the lowest point of the V-shaped cross section of the cutting avoidance groove 4122 .

[0089] In a further solution, a plurality of cutting avoidance grooves 4122 are arranged at intervals along the axial direction of the anvil barrel 410 , and a plurality of blades 420 are arranged on the two connecting columns 450 , and the cutting edges 423 of the respective blades 420 abut against the cutting avoidance grooves 4122 in a one-to-one correspondence.

[0090] In a preferred embodiment, a plurality of cutting avoidance grooves 4122 are arranged at different intervals, wherein the interval between two adjacent cutting avoidance grooves 4122 gradually increases in the direction away from the filter plate 310. During the discharge of washing water, the collected wire scraps are mainly concentrated in the left area close to the filter plate 310, and the distribution of the cutting avoidance grooves 4122 is more conducive to evenly and fully cutting and shredding the wire scraps by the blade 420.

[0091] As a specific implementation, a plurality of sleeves 430 are mounted on the connecting column 450 , and the mounting hole 421 of the blade 420 is clamped between the ends of two adjacent sleeves 430 , so that the sleeves 430 are used to space and position the blades 420 .

[0092] In a further solution, a foreign object intercepting plate 320 is provided at one end of the anvil cylinder 410 away from the impeller chamber 210. The foreign object intercepting plate 320 has a number of water permeable holes 321. The foreign object intercepting plate 320 is spaced from one end of the filtering chamber 230 away from the impeller chamber 210. The water inlet 233 is provided on the side wall of the filtering chamber 230 and is located on the right side of the foreign object intercepting plate 320, that is, between the foreign object intercepting plate 320 and the end of the filtering chamber 230 away from the impeller chamber 210.

[0093] As a specific structure, the right end of the connecting column 450 is fixed to the foreign object intercepting plate 320. In this way, both ends of the connecting column 450 are fixed, and the structure is more stable. The foreign object intercepting plate 320 and the anvil cylinder 410 can rotate relative to each other. After the spline shaft 511 is inserted into the spline hole 1211, the spline shaft 511, the filter plate 310, the connecting column 450 and the foreign object intercepting plate 320 rotate together with the impeller 120.

[0094] In the above solution, the washing water enters the filtering chamber 230 from the water inlet 233 and first enters the space on the right side of the foreign object intercepting plate 320. The washing water flows to the left and passes through the foreign object intercepting plate 320. The water permeable holes 321 provided on the foreign object intercepting plate 320 can prevent larger hard foreign objects, such as buttons or coins, etc. from passing through, but do not affect the passage of thick lint. In this way, the thick lint can enter the inside of the anvil cylinder 410 to be collected and is discharged after being cut by the blade 420. Larger hard clothes will not enter the inside of the anvil cylinder 410, avoiding damage to the blade 420 caused by hitting hard foreign objects.

[0095] In a preferred solution, the aperture of the water permeable hole 321 facing the side where the water inlet 233 is located is larger than the aperture of the water permeable hole 321 facing away from the side where the water inlet 233 is located. In a specific structure, the water permeable hole 321 is a tapered hole with a gradually decreasing aperture from right to left.

[0096] With the above structure, the water flow will accelerate when passing through the water permeable hole 321. In this way, when one end of a longer lint in the water enters the water permeable hole 321, the lint will be driven to pass through quickly due to the accelerating water flow, rather than being caught by the lint like a common warp and weft wire mesh, causing blockage.

[0097] In order to ensure the function of the foreign object intercepting plate 320 to prevent hard foreign objects from passing through, the maximum aperture of the water permeable hole 321 should not exceed the diameter of the smallest common foreign object button. For example, the maximum aperture of the water permeable hole 321 can be set to 10 mm.

[0098] In a further embodiment, the magnetic member 630 is disposed at one end of the filter chamber 230 away from the impeller chamber 210, that is, the rightmost end of the housing 200. A connecting member 521 having a certain length in the axial direction is connected to the left side of the foreign object intercepting plate 320, and a magnetic attracting member 522 is disposed at the right end of the connecting member 521, so as to cooperate with the magnetic member 630 to provide a magnetic attraction force for the anvil cylinder 410 and the internal cutting assembly to reset to the right.

[0099] As a specific structure, the left side of the connecting member 521 is a long cylindrical shape, and the left end is connected to the center of the foreign object intercepting plate 320. The right side of the connecting member 521 is a hollow flat cylindrical shape with an opening towards the right, and the magnetic attracting member 522 is installed in the cavity of the hollow flat cylindrical shape.

[0100] In a preferred structure, the outer side of the magnetic attracting member 522 is wrapped with a first heat insulating member 523, which can avoid the influence of the hot water discharged by the washing device on the magnetic attracting member 522, resulting in the problem that the magnetic attracting member 522 is heated and cannot generate a magnetic attraction force with the magnetic member 630.

[0101] In a further embodiment, a transition chamber 220 is further disposed between the impeller chamber 210 and the filter chamber 230. Among them, the radial dimensions of the impeller chamber 210 and the filter chamber 230 are both larger than the radial dimension of the transition chamber 220.

[0102] In the above solution, the transition chamber 220 is a small narrow chamber located between the impeller chamber 210 and the filter chamber 230, so that the impeller chamber 210 is enclosed to form a semi-closed chamber, which is more conducive to drainage.

[0103] Further, the anvil cylinder 410 includes a large diameter section 412 and a small diameter section 411 connected to each other. Among them, the large diameter section 412 is disposed in the filter chamber 230, and a cutting avoidance groove 4122 is disposed on the inner peripheral wall of the large diameter section 412. The small diameter section 411 is inserted into the transition chamber 220, and the filter plate 310 is disposed at the junction of the large diameter section 412 and the small diameter section 411.

[0104] A certain gap is reserved between the outer peripheral wall of the small diameter section 411 and the side wall of the transition chamber 220 to prevent the cut wire chips from entering the gap between the anvil cylinder 410 and the housing 200 and jamming the anvil cylinder 410, thereby affecting the left and right movement of the anvil cylinder 410.

[0105] In a further embodiment, a positioning portion 4123 protruding from the outer peripheral wall is disposed at one end of the anvil cylinder 410 away from the impeller chamber 210, and an annular groove 232 is disposed on the inner peripheral wall of the filter chamber 230. The positioning portion 4123 is axially movably disposed in the annular groove 232.

[0106] As a specific implementation manner, the positioning portion 4123 is a protruding ring provided at the right end of the large-diameter section 412 of the anvil cylinder 410. Its axial width is smaller than the axial width of the annular groove 232, and at the same time, it has a clearance fit with the annular groove 232, so as to ensure that the anvil cylinder 410 can reciprocate axially within the housing 200.

[0107] In a specific solution, by reasonably designing the axial dimensions of each structure in the drainage and filtration device, when the spline shaft 511 moves leftward and is completely inserted into the spline hole 1211, that is, when the left end of the spline shaft 511 abuts against the closed end of the spline hole 1211, there is a gap between the left end face of the large-diameter section 412 and the left end face of the filtration chamber 230, and there is a gap between the left side surface of the positioning portion 4123 and the leftmost side surface of the annular groove 232.

[0108] In this way, it is avoided that the spline shaft 511 cannot be inserted into the spline hole 1211 due to inaccurate dimension processing, and further, the problem that the blade 420 cannot rotate in the anvil cylinder 410 to cut off the wire chips is caused.

[0109] In a further solution of this embodiment, the right end of the housing 200 is an open structure, and an end cover 600 is installed. The magnetic member 630 is provided on the end cover 600 and is located inside the end cover 600. When performing maintenance or repair, the user or the maintenance personnel can open the end cover 600, and thus pull out the anvil cylinder 410, the foreign object intercepting plate 320, and the filter plate 310 together through the connecting member 521. At the same time, the hard foreign objects collected on the right side of the foreign object intercepting plate 320 can also be cleaned.

[0110] In a specific structure, a threaded structure is provided on the outer periphery of the end cover 600, and it is threadedly connected to the right-end opening of the housing 200. Preferably, a sealing member 650 is further provided to ensure the sealing performance of the right end of the housing 200 and prevent water seepage. For the convenience of operation, a knob 640 is provided on the outer side of the end cover 600, and the user and the maintenance personnel can hold the knob 640 to rotate the end cover 600, so as to open or close the right-end opening of the housing 200.

[0111] As a specific implementation manner, an extension cylinder 610 extending axially into the housing 200 is provided on the inner side surface of the end cover 600, and the magnetic member 630 is provided inside the extension cylinder 610. Preferably, a second heat-insulating member 620 is wrapped on the magnetic member 630, which can prevent the problem that the magnetic member 630 cannot generate magnetic attraction when the washing device discharges hot water.

[0112] In a specific structure, there is a certain interval between the outer periphery of the extension cylinder 610 and the outer periphery of the end cover 600. The seal 650 is a gasket sleeved on the extension cylinder 610. The radial dimension at the right end opening of the housing 200 is larger than the overall radial dimension of the filter cavity 230, forming an annular sealing mating surface facing the right inside the housing 200. After the end cover 600 is tightened at the right end opening of the housing 200, the seal 650 is clamped between the sealing mating surface and the inner surface of the end cover 600 to achieve sealing.

[0113] In a further solution, the water inlet 233 is close to the right end of the housing 200 and is arranged in the top area of the side wall of the housing 200. Below the water inlet 233, a foreign object collection basket 330 is also provided in the filter cavity 230.

[0114] As a specific implementation manner, the foreign object collection basket 330 is a net cover with an open upper side. Larger hard foreign objects in the washing water directly fall into the foreign object collection basket 330 through the open upper side and are collected, while the washing water will not remain in the foreign object collection basket 330.

[0115] When the anvil cylinder 410 needs to be pulled out, the foreign object collection basket 330 and the hard foreign objects collected therein can be pushed out to the right by the anvil cylinder 410 and the foreign object interception plate 320, so that the hard foreign objects accumulated in the filter cavity 230 can be taken out at one time, which is more convenient for cleaning.

[0116] The working process of the drainage and filtration device provided by the embodiment of the present invention is specifically as follows.

[0117] When the washing equipment is draining water normally, the motor 110 outputs a first rotation speed lower than the preset value, thereby controlling the impeller 120 to rotate at the first rotation speed. The washing water can be sucked in through the water inlet 233, and the washing water in the housing 200 is driven to pass through the foreign object interception plate 320 and the filter plate 310 in sequence, and finally discharged from the drain port 211 on the impeller cavity 210. The hard foreign objects carried in the washing water are blocked by the foreign object interception plate 320 and fall into the foreign object collection basket 330. The thick lint in the water can pass through the water permeable holes 321 on the foreign object interception plate 320, but will be intercepted by the filter plate 310 and thus accumulate inside the anvil cylinder 410.

[0118] In the above process, the magnetic part 630 attracts the magnetic part 522, so that the anvil cylinder 410 is kept in a position close to the right side, the spline shaft 511 is separated from the spline hole 1211 on the impeller shaft 122, and the blade 420 remains stationary inside the anvil cylinder 410.

[0119] When it is necessary to clean the lint accumulated in the anvil cylinder 410, the motor 110 outputs a second rotational speed greater than a preset value, causing the impeller 120 to rotate at the second rotational speed. At this time, the drainage power is increased, and the overall composed of the anvil cylinder 410, the filter plate 310, and the foreign object interception plate 320 is attracted to the left, so that it moves to the left against the magnetic attraction force between the magnetic member 630 and the magnetic attraction member 522 until the spline shaft 511 is inserted into the spline hole 1211 at the right end of the impeller shaft 122.

[0120] At this time, the motor 110 continues to output the second rotational speed, driving the impeller 120 to continuously rotate at the second rotational speed, which can drive the filter plate 310, the foreign object interception plate 320, and the connecting column 450 between the two to rotate synchronously. The anvil cylinder 410 is circumferentially limited and matched with the limit groove 231 on the inner wall of the filter chamber 230 through the limit rib 4121 provided on the outer peripheral wall and does not rotate.

[0121] During this process, the blade 420 on the connecting column 450 rotates accordingly, and the cutting edge 423 abuts against the bottom of the cutting avoidance groove 4122 and slides under the pressure provided by the elastic piece 440, thereby cutting off the lint across the cutting avoidance groove 4122. The cut lint becomes shorter and thinner, and then can enter the impeller chamber 210 through the filter holes on the filter plate 310, and finally is discharged together with the washing water from the drain port 211.

[0122] After the lint cleaning is completed, the output rotational speed of the motor 110 decreases, and then the magnetic member 630 attracts the magnetic attraction member 522 to the right, thereby driving the overall composed of the anvil cylinder 410, the filter plate 310, and the foreign object interception plate 320 to move to the right and reset.

[0123] Generally, there are few hard foreign objects in the drainage of the washing equipment and it does not need to be cleaned frequently. When the washing equipment needs to be overhauled or maintained on a large scale, the end cover 600 can be rotated and removed. The magnetic member 630 inside the end cover 600 attracts the magnetic attraction member 522, so that the anvil cylinder 410, the filter plate 310, and the foreign object interception plate 320 can be pulled out together. At the same time, the foreign object collection basket 330 is also pushed out of the housing 200, and the hard foreign objects can be taken out at one time.

[0124] The drainage and filtration device provided by the embodiment of the present invention can automatically cut off the accumulated thick lint, so that the cut lint can be directly discharged with the water flow, saving the trouble of frequent manual cleaning by the user. Through the structural design of the drainage and filtration device, the way of cutting the lint adopts a cutting method similar to that of a guillotine saw, which is easier to apply a shearing force to the lint, and thus it is easier to cut off the lint. In this way, by providing a lower rotational speed by the pump assembly 100, the cutting efficiency of the lint can be ensured.

[0125] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, may make some changes or modifications using the technical content prompted above as equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A drainage filtration device for a washing apparatus, characterized in that, Comprising: A pump assembly having an impeller; A housing with a connected impeller chamber and a filter chamber inside. The impeller is rotatably arranged in the impeller chamber. A drain port is arranged on the chamber wall of the impeller chamber, and a water inlet is arranged on the chamber wall of the filter chamber; An anvil cylinder installed in the filter chamber and coaxially arranged with the impeller. A circumferentially surrounding cutting avoidance groove is arranged on the inner peripheral wall of the anvil cylinder; A cutting assembly rotatably arranged inside the anvil cylinder and having a cutting edge part arranged in the cutting avoidance groove; A filter plate arranged perpendicular to the axis of the anvil cylinder inside the anvil cylinder and located between the cutting assembly and the end of the anvil cylinder close to the impeller chamber; When the pump assembly rotates at a speed greater than a preset value, the cutting assembly can be in transmission connection with the impeller, so that the impeller drives the cutting assembly to rotate, and the cutting edge part slides along the cutting avoidance groove; 2. The drainage filtration device of the washing equipment according to claim 1, characterized in that, The impeller has an impeller shaft, and a plug hole facing the filter chamber and open towards the filter chamber is arranged on the end surface of the impeller shaft close to the filter chamber; One end of a transmission shaft is connected to the side of the filter plate facing the impeller chamber, and the other end of the transmission shaft can be inserted into the plug hole and is in circumferential limit fit with the plug hole; The cutting assembly has a connecting column and a blade; one end of the connecting column is connected to the side of the filter plate facing away from the impeller chamber. Two connecting columns are arranged and symmetrically arranged relative to the axis of the anvil cylinder, and blades are arranged on both connecting columns; The blade bends and extends from the connecting column towards the inner peripheral wall of the anvil cylinder. The blades on the two connecting columns are centrosymmetrically arranged relative to the axis of the anvil cylinder, and the cutting edge part is formed on the side where the blade bends and protrudes; 3. The drainage filtering device of the washing equipment according to claim 2, characterized in that, The blades on the two connecting columns bend and protrude in opposite directions, and an elastic sheet with a certain length is clamped between the two blades; 4. The drainage filtration device of the washing equipment according to claim 2, characterized in that A plurality of the cutting avoidance grooves are arranged at intervals along the axial direction of the anvil cylinder, and a number of blades are arranged on the connecting column, corresponding to the cutting avoidance grooves one by one; Preferably, the interval distance between adjacent two cutting avoidance grooves gradually increases along the direction away from the filter plate; 5. The drainage filtration device of the washing equipment according to claim 4, characterized in that, A number of sleeves are sleeved on the connecting column, and the blade is clamped between the ends of adjacent two sleeves; 6. The drainage and filtration device of the washing equipment according to any one of claims 1-5, characterized in that, A relatively fixed magnetic part is arranged in the housing, and the anvil cylinder is connected with a magnetic attracting part that can be attracted by the magnetic part; the anvil cylinder is axially movably arranged in the filter chamber, and a circumferential limit structure is arranged between the outer peripheral wall of the anvil cylinder and the inner wall of the filter chamber; When the pump assembly rotates at a speed greater than a preset value, the anvil cylinder moves towards the direction close to the impeller chamber against the magnetic attraction force between the magnetic part and the magnetic attracting part, drives the cutting assembly to move synchronously with the anvil cylinder, and is in transmission connection with the impeller; When the pump assembly rotates at a speed less than or equal to the preset value, the anvil cylinder moves towards the direction away from the impeller chamber under the action of the magnetic attraction force between the magnetic part and the magnetic attracting part, drives the cutting assembly to separate from the impeller; Preferably, a limiting groove / limiting rib extending parallel to the axis of the anvil cylinder is arranged on the inner wall of the filter chamber, and a limiting rib / limiting groove extending axially is correspondingly arranged on the outer peripheral wall of the anvil cylinder; 7. The drainage filtration device of the washing equipment according to claim 6, characterized in that, A transition chamber is arranged between the impeller chamber and the filter chamber. The radial dimension of the impeller chamber and the radial dimension of the filter chamber are both larger than the radial dimension of the transition chamber; The anvil cylinder includes a large-diameter section and a small-diameter section connected to each other. The large-diameter section is arranged in the filtering cavity, and the cutting avoidance groove is arranged on its inner peripheral wall; the small-diameter section is inserted into the transition cavity, and the filter plate is arranged at the junction of the large-diameter section and the small-diameter section.

8. The drainage filtration device of the washing equipment according to claim 6, characterized in that A positioning portion protruding from the outer peripheral wall is arranged at one end of the anvil cylinder away from the impeller cavity. An annular groove is arranged on the inner peripheral wall of the filtering cavity, and the positioning portion is axially movably arranged in the annular groove.

9. The drainage and filtration device of the washing equipment according to claim 6, characterized in that, A foreign object intercepting plate is arranged at one end of the anvil cylinder away from the impeller cavity, and a plurality of water permeable holes are formed in the foreign object intercepting plate; The foreign object intercepting plate is arranged at an interval from one end of the filtering cavity away from the impeller cavity, and the water inlet is arranged on the side wall of the filtering cavity, between the foreign object intercepting plate and the end of the filtering cavity away from the impeller cavity; Preferably, the aperture of the water permeable hole facing the side where the water inlet is located is larger than the aperture of the water permeable hole facing away from the side where the water inlet is located; Preferably, the magnetic member is arranged at one end of the filtering cavity away from the impeller cavity; one side of the foreign object intercepting plate facing the direction where the water inlet is located is connected with a connecting member having a certain length in the axial direction, and the magnetic attracting member is arranged at one end of the connecting member away from the foreign object intercepting plate.

10. A washing device, characterized in that, A drainage filtering device of a washing device according to any one of claims 1-9.

Images