Cleaning machine with flow stabilizing function

Abstract

The present application relates to a kind of belt steady flow function's cleaning machine, the bottom of the present application in backwater area is provided with the recessed cavity located in the side of pump water mechanism, the bottom of the recessed cavity is provided with drain, and the slag basket is arranged in the recessed cavity, the side of pump water mechanism is opened with the first water inlet corresponding to the arrangement of recessed cavity and slag basket, above-mentioned recessed cavity is located in the lowest place of backwater area, slag basket is arranged at the place, not only can improve slag collection effect, but also facilitate to drain waste water;Because recessed cavity reduces water suction level, can avoid suction bubble, and improve lift;First water inlet can increase the flow velocity of slag basket side wall during water intake, so as to firmly collect residual slag in slag basket, avoid residual slag escape, also can flush slag basket side wall, improve slag basket cleanliness;Steady flow assembly is arranged at first water inlet, can defoaming and filtering to suction water, so as to improve water suction stability, and then improve the power stability of pump water mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dishwashers, in particular to a cleaning machine with flow stabilizing function. BACKGROUND

[0002] For table type and cabinet type dishwashers, in order to achieve good washing effect, three spray arms are generally designed on the top, middle and bottom of the washing space. During operation, the washing pump delivers water to the top, middle and bottom spray arms through the pipeline, the water is sprayed from the top, middle and bottom spray arms and then falls back to the water cup at the bottom of the dishwasher, and the washing pump delivers the water back to the top, middle and bottom spray arms again to complete a cycle.

[0003] For example, the Chinese patent application for invention with the application publication number CN106859563A (application number: CN201611232345.5) discloses a structure, which includes a cavity for accommodating tableware and providing a cleaning space, a spraying system for spraying water to clean tableware, and a pump body for pumping water and supplying water to the spraying system; the spraying system is arranged in the cavity; the water pumping end of the pump body is communicated with the cavity, and the water supplying end is communicated with the spraying system; the spraying system includes an inner water pipe and two or more sets of spraying devices, and the two or more sets of spraying devices are arranged on the inner water pipe; the water supplying end of the pump body is connected with a water distribution device, the water distribution device is provided with two or more water outlets corresponding to the two or more sets of spraying devices, and the spraying device is communicated with the corresponding water outlet; during operation, the water distribution device turns on one or more water outlets according to the instruction to make one or more sets of spraying devices work.

[0004] In the above-mentioned dishwasher capable of bottom spraying and top spraying, the pump for supplying water to the spraying system generally adopts a closed structure, that is, the volute of the washing pump is arranged below the box body, a rotatable impeller is arranged in the volute, the water inlet of the washing pump volute is communicated with the bottom of the washing cavity, and the water outlet of the volute is connected with a water distribution device, which divides the water flow into a first branch for supplying water to the bottom spraying arm and a second branch for supplying water to the top spraying arm. Since the water pressure for top spraying and the water pressure for bottom spraying are independently supplied by the washing pump, the head, flow and impact force of the water flow on each branch after the water is divided are greatly reduced, which affects the cleaning effect; at the same time, the closed volute fixed below the box body is difficult to disassemble and clean, and bacteria will breed due to residue accumulation after long-term use, which not only affects the washing effect but also causes bad experience to the user.

[0005] In the water flow system of the existing dishwasher, the bottom spray arm is generally located at the central position and above the filter screen, and the slag collecting basket is located beside the bottom spray arm. During slag collecting, the water flows back by gravity, first passes through the filter screen, then passes through the slag collecting basket to collect slag and is discharged. During the drainage process, the water flow speed on the filter screen is too fast, which causes small residues to be easily left on the filter screen, and the slag collecting effect of the slag collecting basket is poor. Moreover, the water flow speed through the slag collecting basket is slow due to the too fast water flow speed on the filter screen, which affects the smoothness of slag discharge. At the same time, small pollutants are easily adhered to the side wall of the slag collecting basket, which is difficult to clean.

[0006] Moreover, during the working process of the cleaning machine, the stability of the running power is required to be relatively high under the condition that the motor speed is constant, which directly affects the cleaning degree. There are many reasons affecting the stability of the running power. Due to the complex internal cleaning working condition, the influence of pollutants (egg protein and the like), the difference of water inlet quantity and the slag collecting backwater efficiency caused by the structure and the like all affect the running stability. SUMMARY

[0007] The first technical problem to be solved by the present application is to provide a cleaning machine with a flow stabilizing function which is beneficial to improve the slag collecting effect and keep the slag basket clean in view of the status of the prior art.

[0008] The second technical problem to be solved by the present application is to provide a cleaning machine with a flow stabilizing function which improves the water suction stability and the power stability of the water pumping mechanism by defoaming and filtering the water sucked by the water pump in view of the status of the prior art.

[0009] The third technical problem to be solved by the present application is to provide a cleaning machine with a flow stabilizing function which can provide power for two washing water paths respectively to improve the lift and water flow and thus improve the cleaning effect in view of the status of the prior art.

[0010] The technical scheme adopted by the present application to solve at least one of the above technical problems is a cleaning machine with a flow stabilizing function, comprising a box body, a lower concave backwater area is arranged at the bottom of the box body, a filter plate is arranged on the top of the backwater area, a water pumping mechanism for pumping water from the backwater area to the top of the filter plate is arranged in the backwater area, the water pumping mechanism is supported at the bottom of the backwater area, a recessed cavity is arranged beside the water pumping mechanism at the bottom of the backwater area, a drain port is arranged at the bottom of the recessed cavity, a slag collecting basket is arranged in the recessed cavity, a first water inlet port corresponding to the arrangement of the recessed cavity and the slag collecting basket is arranged at the side of the water pumping mechanism, and a flow stabilizing assembly capable of defoaming and / or filtering the water is arranged at the first water inlet port.

[0011] Preferably, the first water inlet is connected with a suction nozzle extending at least partially downward, the lower end of the suction nozzle extending to the recess and corresponding to the side wall of the slag collecting basket, and the flow stabilizing component is arranged at the suction end of the suction nozzle. The suction nozzle is arranged to greatly reduce the water suction port, isolate the air bubbles above the water inlet, avoid the suction of air bubbles, and maintain a high lift. The lower end of the suction nozzle corresponds to the side wall of the slag collecting basket, and the water flow rate at the slag collecting basket can be increased during water suction. This is beneficial for collecting residues in the slag collecting basket and cleaning the side wall of the slag collecting basket to avoid the accumulation of residues on the slag collecting basket. In addition, the height of the upper port of the slag collecting basket is 2-3 mm lower than the height of the filter plate. Under the condition of increased water flow rate at the slag collecting basket, the water flow rate on the filter plate will be relatively slow. This can avoid the accumulation of residues on the filter plate and prevent the water flow rate from being too large to cause small residues to block the drainage holes on the filter plate.

[0012] Preferably, the suction nozzle comprises a first part and a second part connected to each other along the water flow direction, and the first part and the second part jointly form a Y-shaped structure. The first part is connected with the first water inlet of the water pumping mechanism in a plug-in manner. The second part extends downward. Preferably, a groove for mounting a sealing ring is arranged on the outer peripheral wall of the first part in the circumferential direction. In the assembled state, the sealing ring is elastically pressed between the outer peripheral wall of the first part and the inner peripheral wall of the first water inlet. Preferably, a mounting shaft is arranged on the outer side wall of the suction nozzle at the bending position of the Y-shaped structure. Correspondingly, an installation opening is formed in the edge of the first water inlet of the water pumping mechanism, which is detachably connected with the mounting shaft. The above structure facilitates the assembly of the suction nozzle and the water pumping mechanism and reduces the energy loss of the water flow at the joint.

[0013] Preferably, the side wall of the lower part of the second part near the water pumping mechanism extends outward from top to bottom to form a water suction area with gradually increasing cross-sectional area, and the flow stabilizing component is arranged at the inlet of the water suction area. This structure is to arrange the flow stabilizing component at the front end to ensure that the minimum water passing area of the flow stabilizing component is equivalent to the area of the first water inlet, avoiding the occurrence of throttling phenomenon.

[0014] In the present application, the flow stabilizing component comprises a flow stabilizing plate and a sealing gasket. A plurality of water passing holes for water passing through are formed in the flow stabilizing plate. A water supplement port is also formed in the flow stabilizing plate. The sealing gasket is arranged on the front side of the flow stabilizing plate and covers the water supplement port, and is used to automatically adjust the elastic compression amount of the sealing gasket relative to the water supplement port under the impact of water flow. The diameter of the water passing hole is about 1 mm, which mainly plays a filtering role. The water supplement port mainly plays a compensating role for the water suction flow to ensure sufficient water suction flow. When the front end water suction force is too large, the compression rubber sealing gasket is used to reduce the water passing area, that is, in addition to the basic water passing hole, the water passing area can be adjusted in diameter according to the size of the front end water suction pressure, so as to realize the flow stabilizing effect.

[0015] Preferably, the total area of the water passing holes is equivalent to the flow cross-sectional area of the first water inlet, so as to avoid throttling phenomenon.

[0016] In order to facilitate the installation of the sealing gasket, the area of the water supplementing hole is larger than that of the water passing hole, the water supplementing hole is provided with a positioning column extending along the water flow direction, the sealing gasket is sleeved on the outer periphery of the positioning column, and the end of the positioning column is provided with a limiting portion capable of abutting against the outer side wall of the sealing gasket so as to constrain the sealing gasket on the positioning column.

[0017] Preferably, the outer peripheral wall of the flow stabilizing plate is provided with a supporting ring arranged around the periphery of the water supplementing hole, the water supplementing hole is provided with a plurality of radially arranged and protruding ribs outside the supporting ring, the sealing gasket abuts against the ribs, and the height of the ribs protruding outside the supporting ring defines the elastic compression amount of the sealing gasket. The structure is convenient for cooperating with the water flow impact force to control the water supplementing amount.

[0018] Preferably, the outer side wall of the rib is provided with a notch arranged towards the water inlet direction, and the depth of the notch is greater than the height of the supporting ring along the water flow direction.

[0019] Preferably, the depth of the notch is 1-2 mm, and the elastic compression amount of the sealing gasket is 0.5-1 mm.

[0020] Preferably, the outer end of the rib is connected to the supporting ring, the inner side of the supporting ring is provided with a bottom ring located at the back side of the rib along the water flow direction, and the bottom ring is provided with a plurality of water supplementing holes arranged in the circumferential direction. The water supplementing holes cooperate with the water supplementing hole to jointly realize water supplementing, the area of each water supplementing region is dispersed, and the flow stabilizing effect is improved.

[0021] Preferably, the edges of the flow stabilizing plate are provided with sharp edges arranged with pointed ends towards the middle part of the flow stabilizing plate and used for piercing bubbles, and the sharp edges are triangular and arranged at the upper edge and the lower edge of the flow stabilizing plate. When the foaming is caused by poor cleaning conditions (especially for pollutants such as eggs), the large bubbles are broken by the sharp edges, so as not to easily enter the water flow system, and the stability of the cleaning process is further improved.

[0022] In the application, the box is provided with a bottom spray arm, a middle spray arm and a top spray arm, the bottom spray arm is used for spraying water upwards, the middle spray arm is arranged above the side of the bottom spray arm and is used for spraying water to the upper area of the bottom spray arm, and the top spray arm is arranged above the middle spray arm and is used for spraying water to the upper or side area of the top spray arm. The output end of the water pumping mechanism is connected with the bottom spray arm, the middle spray arm and / or the top spray arm, so as to provide water conveying power for the spray arms. The above structure is beneficial to eliminate cleaning dead angles and improve the cleaning effect.

[0023] In the above scheme, the water pumping mechanism comprises:

[0024] an upper impeller having a first shaft located at the center and first blades distributed on the peripheral surface of the first shaft in a circumferential direction and extending in an axial direction;

[0025] a lower impeller having a second shaft located at the center and second blades distributed on the peripheral surface of the second shaft in a circumferential direction;

[0026] an upper shell having a first accommodating cavity for mounting the upper part of the first blades, the upper shell being provided with a plurality of spray holes in the top wall and / or side wall thereof in fluid communication with the first accommodating cavity, the upper shell constituting the bottom spray arm; and

[0027] a lower shell connected to the lower part of the upper shell, the upper part of the lower shell being provided with a second accommodating cavity for mounting the lower part of the first blades, the side wall of the lower shell being provided with a first water inlet for water to enter the second accommodating cavity, the lower part of the lower shell being provided with a third accommodating cavity for mounting the lower impeller, the side wall and / or bottom wall of the lower shell being provided with a second water inlet for water to enter the third accommodating cavity and a water outlet for water to be output from the third accommodating cavity.

[0028] The pump water mechanism is an open double-pump system, in which the second accommodating cavity, the first accommodating cavity and the upper impeller located at the upper part provide water for bottom spray, and the third accommodating cavity and the lower impeller located at the lower part provide water for top and / or middle spray. Since the power of the two water flows is independently provided by the corresponding pumps, the lift and flow rate of each water flow are improved, which is beneficial to improve the cleaning effect. The double-pump system is convenient to disassemble and assemble, and the upper shell can be disassembled from the lower shell to clean the upper shell, the upper impeller and the lower shell, thereby avoiding bacterial growth.

[0029] In the above scheme, the middle part of the lower shell is provided with a partition plate for separating the second accommodating cavity and the third accommodating cavity into relatively independent cavities. The second accommodating cavity and the third accommodating cavity are relatively independent, which is convenient to provide water for lower spray by the upper impeller and provide water for top and / or middle spray by the lower impeller, reduces fluid disturbance between each other, reduces the capacity loss, and improves the lift, flow rate and spraying force of the water flow.

[0030] Preferably, the third accommodating cavity is located below the partition plate and is substantially disc-shaped, the second water inlet is formed in the bottom wall of the lower shell, and the water outlet is formed in the side wall of the lower shell and is tangentially connected to the third accommodating cavity through a guide pipe. This structure is beneficial to reduce the capacity loss of the water flow output from the third accommodating cavity.

[0031] Preferably, the second accommodating cavity is located above the partition plate and vertically extends, the inner diameter of the second accommodating cavity is smaller than the inner diameter of the third accommodating cavity and is matched with the lower part of the first blade. This structure is beneficial to reduce the capacity loss of the water flow when flowing through the second accommodating cavity.

[0032] Preferably, a transversely extending I-shaped surrounding plate is arranged on the top wall of the partition plate, and the surrounding plate and the partition plate jointly enclose a water inlet channel communicated with the second accommodating cavity, and an outer port of the water inlet channel constitutes the first water inlet. With the structure, the water inlet channel is arranged at the bottom of the second accommodating cavity, which is beneficial to reduce water flow disturbance and further reduce the capacity loss of water flow when flowing through the second accommodating cavity.

[0033] In order to facilitate assembly, a radially extending support plate is arranged on the outer peripheral wall of the upper portion of the lower shell, and the upper shell is constrained on the support plate. A clamping ring is arranged on the upper wall surface of the support plate, and a clamping leg is arranged on the bottom wall of the upper shell and rotatably passes through the clamping ring and is clamped and limited by the bottom wall of the clamping ring, so as to detachably connect the upper shell on the top of the lower shell.

[0034] Preferably, a third water inlet corresponding to the first accommodating cavity is arranged on the bottom wall of the upper shell, and the third water inlet is opposite to the upper port of the second accommodating cavity. The diameter of the third water inlet is greater than the inner diameter of the second accommodating cavity, and the inner diameter of the upper portion of the lower shell gradually expands to form a guide portion which can smoothly transition and connect with the inner bottom wall of the first accommodating cavity near the upper end of the second accommodating cavity, and the outer edge of the guide portion is arranged near the inner edge of the third water inlet. The structure is beneficial to reduce the capacity loss of water flow when entering the first accommodating cavity from the second accommodating cavity.

[0035] In the present application, the upper portion of the first blade is a centrifugal blade, and the lower portion is an axial flow blade; and the second blade is a centrifugal blade.

[0036] In the above-mentioned schemes, the pump water mechanism further comprises a driving member for driving the rotation of the upper impeller and the lower impeller, and the driving member is arranged on the outer bottom wall of the box body and the output shaft is arranged upwardly, the output shaft passes through the bottom wall of the box body, the lower shell and extends into the first accommodating cavity of the upper shell from bottom to top, and is connected with the lower impeller and the upper impeller respectively. With the structure, a double-pump system is constructed by using one power source, which simplifies the overall structure, reduces the production cost, and is more convenient for controlling the water supply.

[0037] Preferably, the output shaft is radially limited with the upper impeller and the lower impeller respectively, and a nut which can prevent the upper impeller from moving along the output shaft in the axial direction is arranged at the upper end of the output shaft. With the above structure, it is convenient to disassemble and assemble, after the upper shell is taken off from the clamping ring, the nut is unscrewed, and then the upper impeller can be taken off, and the cavity of the upper shell, the upper impeller and the upper portion of the lower shell can be cleaned to avoid bacterial growth and improve cleaning effect.

[0038] Preferably, a water supply pipeline for supplying water to the middle spray arm and the top spray arm is arranged in the box, the input end of the water supply pipeline is connected with the water outlet of the lower shell, and the output end of the water supply pipeline is connected with the middle spray arm and the top spray arm respectively.

[0039] Preferably, a partition plate is arranged in the middle of the box to divide the inner cavity into an upper cavity and a lower cavity which are relatively independent, the bottom spray arm is arranged at the bottom of the lower cavity, the middle spray arm is arranged in the middle or upper part of the lower cavity, and the top spray arm is arranged in the upper cavity. With such a structure, the lower cavity or the upper and lower cavities can be cleaned by spraying according to needs, so as to meet more needs of consumers.

[0040] Preferably, the water supply pipeline is arranged close to the inner side wall of the box, the top spray arm comprises a first spray arm extending from the water supply pipeline to the middle of the box and a second spray arm arranged above the first spray arm and close to the inner side wall of the box, the first spray arm is arranged at the bottom of the upper cavity and used for spraying water upward, and the second spray arm is arranged in the middle or upper part of the upper cavity and used for spraying water to the area above the first spray arm. Such a structure is beneficial to eliminating the cleaning dead angle of the upper cavity and improving the cleaning effect in the upper cavity.

[0041] Compared with the prior art, the pump water mechanism of the present application has the following advantages: a recessed cavity is arranged beside the pump water mechanism at the bottom of the backwater area, a drain port is arranged at the bottom of the recessed cavity, a slag collecting basket is arranged in the recessed cavity, a first water inlet port is arranged at the side of the pump water mechanism corresponding to the arrangement of the recessed cavity and the slag collecting basket, the recessed cavity is arranged at the lowest position of the backwater area, and the slag collecting basket is arranged at this position, so that the slag collecting effect is improved, and the waste water can be completely drained; the recessed cavity reduces the water suction level, so that air bubbles can be avoided, and the lift is improved; the first water inlet port can increase the flow velocity of water at the side wall of the slag collecting basket during water inlet, so that the slag is tightly collected in the slag collecting basket and the slag can be prevented from escaping, and the slag collecting basket side wall can be flushed to improve the cleanliness of the slag collecting basket; a flow stabilizing assembly is arranged at the first water inlet port, so that the suction water can be defoamed and filtered, the water suction stability is improved, and the power stability of the pump water mechanism is improved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 FIG. 1 is a structural schematic view of the pump water mechanism in the embodiment of the present application;

[0043] Figure 2 FIG. 2 is a structural schematic view of the pump water mechanism from another angle; Figure 1 FIG. 3 is a structural schematic view of the pump water mechanism from another angle;

[0044] Figure 3 FIG. 4 is a sectional view of the pump water mechanism in the embodiment of the present application;

[0045] Figure 4 FIG. 5 is a structural schematic view of the lower shell in the embodiment of the present application;

[0046] Figure 5 As Figure 4 Another angle structural diagram;

[0047] Figure 6 As the cross-sectional view of the lower shell in the embodiment of the present application;

[0048] Figure 7 As the structural diagram of the cleaning machine in the embodiment of the present application;

[0049] Figure 8 As the cross-sectional view of the cleaning machine in the embodiment of the present application;

[0050] Figure 9 As Figure 8 The enlarged view of a part;

[0051] Figure 10 As the assembly structural diagram of the lower shell and the suction nozzle in the embodiment of the present application;

[0052] Figure 11 As the structural diagram of the suction nozzle in the embodiment of the present application;

[0053] Figure 12 As the structural diagram of the flow stabilizing assembly in the embodiment of the present application;

[0054] Figure 13 As the cross-sectional view of the flow stabilizing assembly in the embodiment of the present application;

[0055] Figure 14 As the structural diagram of the flow stabilizing plate in the embodiment of the present application. DETAILED DESCRIPTION

[0056] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0057] As Figures 1-14 shown, the cleaning machine of the present embodiment includes a box body 6, a spraying device a and a water pumping mechanism b.

[0058] The spraying device a includes a bottom spraying arm, a middle spraying arm a1 and a top spraying arm a2. The bottom spraying arm is used for spraying water upward. The middle spraying arm a1 is arranged above the side of the bottom spraying arm and is used for spraying water to the upper area of the bottom spraying arm. The top spraying arm a2 is arranged above the middle spraying arm a1 and is used for spraying water to the upper or side area of the top spraying arm a2.

[0059] The bottom of the box body 6 is provided with a lower concave water return area 61. The top of the water return area 61 is covered with a filter plate 62.

[0060] The water pumping mechanism b is installed at the water return area 61 and is used for pumping water from the water return area 61 to the spraying device a and spraying it out.

[0061] Specifically, the water pumping mechanism b is supported on the bottom of the backwater area 61, and has a spacing between the water pumping mechanism b and the bottom of the backwater area 61 for water flow to pass through. The bottom of the backwater area 61 is provided with a recessed cavity 611 beside the water pumping mechanism b, and the bottom of the recessed cavity 611 is provided with a water outlet 610. A slag collecting basket 9 is arranged in the recessed cavity 611, and the side of the water pumping mechanism b is provided with a first water inlet 411 corresponding to the arrangement of the recessed cavity 611 and the slag collecting basket 9.

[0062] As shown in Figure 10 The first water inlet 411 is connected with a suction nozzle 40 extending downward at least partially, and the lower end of the suction nozzle 40 extends to the recessed cavity 611 and is arranged corresponding to the side wall of the slag collecting basket 9. The suction nozzle 40 is arranged to greatly reduce the water suction port, isolate air bubbles above the water inlet, avoid air bubbles from being sucked in, and maintain a high lift. The lower end of the suction nozzle 40 is arranged corresponding to the side wall of the slag collecting basket 9, and the water flow rate at the slag collecting basket 9 can be increased during water suction, which is beneficial to collect residues in the slag collecting basket 9 and clean the side wall of the slag collecting basket 9 to avoid residues accumulating on the slag collecting basket 9. In addition, the height of the upper port of the slag collecting basket 9 is 2-3 mm lower than the height of the filter plate 62. Under the condition that the water flow rate at the slag collecting basket 9 is increased, the water flow rate on the filter plate 62 will be relatively slow, which can not only avoid residues accumulating on the filter plate 62, but also avoid the water flow rate being too large to cause small residues to block the drainage holes on the filter plate 62, so as to maintain a high backwater speed.

[0063] The bottom wall of the water pumping mechanism b is provided with a second water inlet 421, the upper end of the suction nozzle 40 is connected with the first water inlet 411, and the second end of the suction nozzle 40 extends downward to the bottom of the water pumping mechanism b. The above structure is beneficial to guide the water in the recessed cavity 611 to the second water inlet 421, thereby avoiding energy loss and achieving the effect of large flow and high flow rate of water pumping.

[0064] In this embodiment, the pumping mechanism b has a laterally extending water inlet channel 432, the outer port of which constitutes the aforementioned first water inlet 411. The suction nozzle 40 includes a first part 401 and a second part 402 that are connected to each other along the water flow direction, and the first part 401 and the second part 402 together form a ︿-shaped structure. The first part 401 is inserted and connected to the first water inlet 411 of the pumping mechanism b, and the second part 402 extends obliquely downward. A groove 4011 for installing a sealing ring is provided circumferentially on the outer peripheral wall of the first part 401. In the assembled state, the sealing ring elastically presses against the outer peripheral wall of the first part 401 and the inner peripheral wall of the first water inlet 411. A mounting shaft 403 located at the bend of the ︿-shaped structure is provided on the outer side wall of the suction nozzle 40. Correspondingly, the edge of the first water inlet 411 of the pumping mechanism b has a mounting opening 404 that is detachably connected to the mounting shaft 403. The above structure facilitates the assembly of the suction nozzle 40 with the pumping mechanism b and reduces the energy loss of the water flow at the connection between the two.

[0065] The lower part of the second part 402, near the pump mechanism b, extends outward from top to bottom to form a water intake area 405 with a gradually increasing cross-sectional area. A flow stabilizing component 50 capable of defoaming and / or filtering water is embedded in the water inlet at the lower end of the water intake area 405.

[0066] like Figures 12-14 As shown, the flow stabilizing component 50 in this embodiment includes a flow stabilizing plate 501 and a sealing gasket 502. The flow stabilizing plate 501 has multiple water passage holes 5011 for water to pass through, and a water inlet 5012 is also provided on the flow stabilizing plate 501. The sealing gasket 502 is located on the front side of the flow stabilizing plate 501 and covers the water inlet 5012, used to automatically adjust the elastic compression of the sealing gasket 502 relative to the water inlet 5012 under water flow impact. The diameter of the water passage holes 5011 is about 1mm, mainly serving a filtering function. The water inlet 5012 mainly serves to compensate for the water intake flow rate to ensure sufficient water intake. When the front-end water suction force is too large, the rubber sealing gasket 502 is compressed to reduce the water passage area. That is, except for the basic water passage holes, the water passage area can be adjusted according to the front-end water suction pressure to achieve a flow stabilizing effect.

[0067] The total water passage area of ​​each water passage hole 5011 is equivalent to the flow cross-sectional area of ​​the first water inlet 411, in order to avoid throttling.

[0068] To facilitate the installation of the sealing gasket 502, the area of ​​the water inlet 5012 is larger than the area of ​​the water passage hole 5011. A positioning post 5013 extending along the water flow direction is provided in the water inlet 5012. The sealing gasket 502 is fitted around the outer periphery of the positioning post 5013. The end of the positioning post 5013 is provided with a limiting part 5014 that can abut against the outer wall of the sealing gasket 502 to constrain it on the positioning post.

[0069] The outer peripheral wall of the flow stabilizer 501 is provided with a support ring 5015 arranged around the periphery of the water inlet 5012. Multiple radially arranged ribs 5016 protruding from the support ring 5015 are provided in the water inlet 5012. The sealing gasket 502 abuts against these ribs 5016, and the height of the ribs 5016 protruding from the support ring 5015 limits the elastic compression of the sealing gasket 502. This structure facilitates control of the water supply in conjunction with the impact force of the water flow.

[0070] The outer wall of the reinforcing rib 5016 has a notch 5017 facing the direction of incoming water. The depth of the notch 5017 is greater than the height of the support ring 5015 along the water flow direction. The depth of the notch 5017 is 1-2 mm, and the elastic compression of the sealing gasket 502 is 0.5-1 mm. The outer end of the reinforcing rib 5016 is connected to the support ring 5015. A bottom ring 5018 is provided on the inner side of the support ring 5015, located behind the reinforcing rib 5016 along the water flow direction. The bottom ring 5018 has multiple circumferentially arranged water inlet holes 5019. These water inlet holes 5019 cooperate with the water inlet 5012 to achieve water replenishment. The area of ​​each water replenishment zone is dispersed, which is conducive to improving the flow stabilization effect.

[0071] The flow stabilizer 501 has sharp points 500 at its edges, with the tips pointing towards the center of the flow stabilizer, used to puncture air bubbles. These sharp points 500 are located at the upper and lower edges of the flow stabilizer 501 and are triangular in shape. When foaming occurs due to poor cleaning conditions (especially contaminants such as eggs), these large air bubbles will be burst by the sharp points, making it difficult for them to enter the water flow system, thus further increasing the stability of the cleaning process.

[0072] In this embodiment, the pumping mechanism b includes an upper impeller 1, a lower impeller 2, an upper housing 3, a lower housing 4, and a driving component 5. The upper impeller 1 has a first shaft 11 located at the center and a plurality of first blades 12 distributed circumferentially and extending axially on the circumferential surface of the first shaft 11. The upper part of the first blades 12 is a centrifugal blade, and the lower part is an axial flow blade. The lower impeller 2 has a second shaft 21 located at the center and a plurality of second blades 22 distributed circumferentially on the circumferential surface of the second shaft 21. The second blades 22 are centrifugal blades.

[0073] The upper housing 3 has a body extending in the length direction. The central part of the body has a first accommodating cavity 31 for mounting the upper part of the first blade 12. The two sides of the body have flow channels communicating with the first accommodating cavity 31. The top wall of the upper housing 3 has a spray hole 32 communicating with the flow channel. The upper housing 3 constitutes the aforementioned bottom spray arm.

[0074] The lower housing 4 is connected to the lower part of the upper housing 3. The upper part of the lower housing 4 has a second accommodating cavity 41 for installing the lower part of the first blade 12. The side wall of the lower housing 4 has a first water inlet 411 for water to enter the second accommodating cavity 41. The lower part of the lower housing 4 has a third accommodating cavity 42 for installing the lower impeller 2. The bottom wall of the lower housing 4 has a second water inlet 421 for water to enter the third accommodating cavity 42, and the side wall has a water outlet 422 for water to be discharged from the third accommodating cavity 42.

[0075] The driving component 5 is a motor, which is located on the outer bottom wall of the housing 6. The output shaft 51 passes through the housing 6, the second water inlet 421, and the lower housing 4 from bottom to top and extends into the first accommodating cavity 31 of the upper housing 3 and is connected to the lower impeller 2 and the upper impeller 1 respectively, for driving the upper impeller 1 and the lower impeller 2 to rotate.

[0076] Specifically, such as Figure 3 , 6 As shown, a partition 43 is provided in the middle of the lower housing 4 to separate the second accommodating cavity 41 and the third accommodating cavity 42 into relatively independent cavities. This relative independence of the second accommodating cavity 41 and the third accommodating cavity 42 facilitates water supply to the lower spray via the upper impeller 1 and to the top and / or middle spray via the lower impeller 2, reducing fluid disturbance between them, minimizing energy loss, and improving water head, water flow rate, and spray force.

[0077] The aforementioned third accommodating cavity 42 is located below the partition plate 43 and is roughly disc-shaped. The second water inlet 421 is opened in the center of the bottom wall of the lower housing 4, and the water outlet 422 is tangentially connected to the third accommodating cavity 42 through the guide pipe 423. This structure helps to reduce the loss of the water output capacity of the third accommodating cavity 42.

[0078] The second receiving cavity 41 is located above the partition 43 and extends vertically. The inner diameter of the second receiving cavity 41 is smaller than the inner diameter of the third receiving cavity 42 and is adapted to the lower part of the first blade 12. This structure helps to reduce the energy loss of water flow when it flows through the second receiving cavity 41.

[0079] like Figure 4 , 5 As described in section 6, a laterally extending U-shaped enclosure 431 is provided on the top wall of the partition 43. The enclosure 431 and the partition 43 together form a water inlet channel 432 that communicates with the second accommodating cavity 41. The outer port of the water inlet channel 432 constitutes the first water inlet 411. This structure not only facilitates manufacturing, but also places the water inlet channel 432 at the bottom of the second accommodating cavity 41, which helps to reduce water flow disturbance and further reduce the energy loss of water flow when passing through the second accommodating cavity 42.

[0080] For ease of assembly, a radially extending support plate 44 is provided on the outer peripheral wall of the upper part of the lower housing 4, and the upper housing 3 is constrained on the support plate 44. A retaining ring 441 is provided on the upper wall surface of the support plate 44, and a retaining foot 33 is provided on the bottom wall of the upper housing 3, which is rotatably arranged through the retaining ring 441 and engages with and limits the position of the bottom wall of the retaining ring 441, thereby detachably connecting the upper housing 3 to the top of the lower housing 4.

[0081] like Figure 3 As shown, the bottom wall of the upper housing 3 has a third water inlet 34 corresponding to the first accommodating cavity 31, which is connected to the upper port of the second accommodating cavity 41. The diameter of the third water inlet 34 is larger than the inner diameter of the second accommodating cavity 41. The upper part of the lower housing 4 gradually expands its inner diameter near the upper end of the second accommodating cavity 41, forming a guide portion 412 that can smoothly transition and connect with the inner bottom wall of the first accommodating cavity 31. This structure helps to reduce the energy loss of water flow from the second accommodating cavity 41 into the first accommodating cavity 31. The outer edge of the guide portion 412 is arranged near the inner edge of the third water inlet 34. This structure helps to improve the sealing performance at the third water inlet 34 and prevent water leakage from affecting the head of the bottom spray.

[0082] In this embodiment, the output shaft 51 is radially limited by the upper impeller 1 and the lower impeller 2, respectively. A nut is provided at the upper end of the output shaft 51 to prevent the upper impeller 1 from moving axially along the output shaft 51. With the above structure, disassembly and assembly are convenient. After removing the upper housing 3 from the retaining ring 441, the nut can be unscrewed to remove the upper impeller 1. The cavities of the upper housing 3, the upper impeller 1, and the upper part of the lower housing 4 can be cleaned to avoid bacterial growth and improve the cleaning effect.

[0083] In this embodiment, the housing 6 is equipped with a water supply pipe 7 for supplying water to the middle spray arm a1 and the top spray arm a2. The inlet of the water supply pipe 7 is connected to the outlet 422 of the lower housing 4, and the outlet of the water supply pipe 7 is connected to both the middle spray arm a1 and the top spray arm a2. The water supply pipe 7 has two relatively independent branches: a first branch pipe 71 and a second branch pipe 72. The outlet of the first branch pipe 71 is connected to the inlet of the middle spray arm a1, and the outlet of the second branch pipe 72 is connected to the inlet of the top spray arm a2. This structure enables spraying of the lower, middle, and top layers, which helps to improve the cleaning effect. The bottom of the housing 6 is also equipped with a water distribution valve 8 for controlling the flow of the first branch pipe 71 and the second branch pipe 72. The inlet of the water distribution valve 8 is connected to the outlet 422 of the lower housing 4, the first outlet of the water distribution valve 8 is connected to the input end of the first branch pipe 71, and the second outlet of the water distribution valve 8 is connected to the input end of the second branch pipe 72. This structure facilitates the control of the usage status of the middle and top layer spraying as needed. For example, the first branch pipe 71 can be closed and the second branch pipe 72 can be opened for top layer spraying only; or the first branch pipe 71 can be opened and the second branch pipe 72 can be closed for middle layer spraying only to meet more usage needs.

[0084] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0085] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. A cleaning machine with a flow stabilization function, comprising a housing (6), wherein a recessed return water area (61) is provided at the bottom of the housing (6), and a filter plate (62) is covered on the top of the return water area (61), wherein a pumping mechanism (b) for pumping water from the return water area (61) to above the filter plate (62) is provided in the return water area (61), characterized in that: The pumping mechanism (b) is supported at the bottom of the return water area (61). The bottom of the return water area (61) is provided with a cavity (611) located next to the pumping mechanism (b). A drain outlet (610) is provided at the bottom of the cavity (611). A slag collection basket (9) is provided in the cavity (611). A first water inlet (411) is provided on the side of the pumping mechanism (b) corresponding to the cavity (611) and the slag collection basket (9). A flow stabilizing component (50) capable of defoaming and / or filtering water is provided at the first water inlet (411). The flow stabilizing assembly (50) includes a flow stabilizing plate (501) and a sealing gasket (502). The flow stabilizing plate (501) has multiple water passage holes (5011) for water supply. The flow stabilizing plate (501) also has a water inlet (5012). The sealing gasket (502) is located on the front side of the flow stabilizing plate (501) and covers the water inlet (5012), and is used to automatically adjust the elastic compression of the sealing gasket (502) relative to the water inlet (5012) under the impact of water flow. The total water passage surface of each water passage hole (5011) is... The cross-sectional area of ​​the flow is equivalent to that of the first inlet (411); the outer peripheral wall of the flow stabilizer (501) is provided with a support ring (5015) arranged around the periphery of the water inlet (5012); the water inlet (5012) is provided with a plurality of radially arranged ribs (5016) protruding out of the support ring (5015); the sealing gasket (502) abuts against the ribs (5016); the height of the ribs (5016) protruding out of the support ring (5015) limits the elastic compression of the sealing gasket (502).

2. The cleaning machine with flow stabilization function according to claim 1, characterized in that: A suction nozzle (40) extending at least partially downward is connected to the first inlet (411). The lower end of the suction nozzle (40) extends to the cavity (611) and is arranged corresponding to the side wall of the slag collection basket (9). The flow stabilizing component (50) is located at the suction end of the suction nozzle (40).

3. The cleaning machine with flow stabilization function according to claim 2, characterized in that: The suction nozzle (40) includes a first part (401) and a second part (402) that are connected to each other along the water flow direction. The first part (401) and the second part (402) together form a ︿-shaped structure. The first part (401) is inserted and connected to the first water inlet (411) of the pumping mechanism. The second part (402) extends downward at an angle.

4. The cleaning machine with flow stabilization function according to claim 3, characterized in that: The outer peripheral wall of the first part (401) is provided with a groove (4011) for installing a sealing ring along the circumferential direction. When assembled, the sealing ring is elastically pressed between the outer peripheral wall of the first part (401) and the inner peripheral wall of the first water inlet (411).

5. The cleaning machine with flow stabilization function according to claim 3, characterized in that: The suction nozzle (40) has an installation shaft (403) located at the bend of the ︿-shaped structure on its outer side wall. Correspondingly, the edge of the first water inlet (411) of the pumping mechanism has an installation port (404) that can be detachably connected to the installation shaft (403).

6. The cleaning machine with flow stabilization function according to claim 3, characterized in that: The lower part of the second part (402) near the pump mechanism extends outward from top to bottom to form a water absorption zone (405) with a gradually increasing cross-sectional area. The flow stabilizing component (50) is located at the inlet of the water absorption zone (405).

7. The cleaning machine with flow stabilization function according to claim 1, characterized in that: The area of ​​the water inlet (5012) is larger than the area of ​​the water passage hole. A positioning post (5013) extending along the water flow direction is provided in the water inlet (5012). The sealing gasket (502) is sleeved on the outer periphery of the positioning post (5013). The end of the positioning post (5013) is provided with a limiting part (5014) that can abut against the outer wall of the sealing gasket (502) to constrain it on the positioning post (5013).

8. The cleaning machine with flow stabilization function according to claim 1, characterized in that: The outer wall of the rib (5016) has a notch (5017) facing the direction of the incoming water, and the depth of the notch is greater than the height of the support ring (5015) along the direction of water flow.

9. The cleaning machine with flow stabilization function according to claim 8, characterized in that: The notch (5017) has a depth of 1 to 2 mm, and the elastic compression of the sealing gasket (502) is 0.5 to 1 mm.

10. The cleaning machine with flow stabilization function according to claim 9, characterized in that: The outer end of the rib (5016) is connected to the support ring (5015). The inner side of the support ring (5015) is provided with a bottom ring (5018) located behind the rib (5016) along the water flow direction. The bottom ring (5018) has a plurality of water replenishment holes (5019) arranged circumferentially.

11. The cleaning machine with flow stabilization function according to claim 1, characterized in that: The edge of the flow stabilizer (501) is provided with a sharp member (500) with its tip facing the center of the flow stabilizer (501) for puncturing bubbles.

12. The cleaning machine according to any one of claims 1 to 11, characterized in that: The housing (6) is provided with a bottom spray arm, a middle spray arm (a1) and a top spray arm (a2). The bottom spray arm is used to spray water upwards. The middle spray arm (a1) is located above the bottom spray arm and is used to spray water into the area above the bottom spray arm. The top spray arm (a2) is located above the middle spray arm (a1) and is used to spray water into the area above or to the side of the top spray arm (a2). The output end of the pump mechanism is connected to the bottom spray arm, the middle spray arm (a1) and / or the top spray arm (a2) respectively to provide water delivery power.

13. The cleaning machine according to claim 12, characterized in that: The pumping mechanism (b) includes: The upper impeller (1) has a first shaft (11) located at the center and first blades (12) that are circumferentially spaced and extend axially on the circumferential surface of the first shaft (11); The lower impeller (2) has a second shaft (21) located at the center and second blades (22) spaced circumferentially on the circumferential surface of the second shaft (21); The upper housing (3) has a first receiving cavity (31) for mounting the upper part of the first blade (12), and the top wall and / or side wall of the upper housing (3) have spray holes (32) in fluid communication with the first receiving cavity (31), the upper housing (3) constituting the bottom spray arm; and The lower housing (4) is connected below the upper housing (3). The upper part of the lower housing (4) has a second accommodating cavity (41) for installing the lower part of the first blade (12). The second accommodating cavity (41) is connected to the first accommodating cavity. The side wall of the lower housing (4) has a first water inlet (411) for supplying water into the second accommodating cavity (41). The lower part of the lower housing (4) has a third accommodating cavity (42) for installing the lower impeller (2). The side wall and / or bottom wall of the lower housing (4) have a second water inlet (421) for supplying water into the third accommodating cavity (42) and a water outlet (422) for outputting water from the third accommodating cavity (42).

14. The cleaning machine according to claim 13, characterized in that: The lower housing (4) is provided with a partition (43) in the middle for separating the second accommodating cavity (41) and the third accommodating cavity (42) into relatively independent cavities.

15. The cleaning machine according to claim 14, characterized in that: The third accommodating cavity (42) is located below the partition (43) and is generally disc-shaped. The second water inlet (421) is opened on the bottom wall of the lower housing (4), and the water outlet (422) is opened on the side wall of the lower housing (4) and is tangentially connected to the third accommodating cavity (42) through the guide pipe (423).

16. The cleaning machine according to claim 15, characterized in that: The second accommodating cavity (41) is located above the partition (43) and extends vertically. The inner diameter of the second accommodating cavity (41) is smaller than the inner diameter of the third accommodating cavity (42) and is adapted to the lower part of the first blade (12).

17. The cleaning machine according to claim 13, characterized in that: A radially extending support plate (44) is provided on the outer peripheral wall of the upper part of the lower shell (4), and the upper shell (3) is constrained on the support plate (44).

18. The cleaning machine according to claim 17, characterized in that: A retaining ring (441) is provided on the upper wall of the support plate (44), and a retaining foot (33) is provided on the bottom wall of the upper housing (3) to rotatably pass through the retaining ring (441) and to engage and limit the position of the retaining ring (441).

19. The cleaning machine according to claim 13, characterized in that: The bottom wall of the upper housing (3) has a third water inlet (34) arranged corresponding to the first accommodating cavity (31), and the third water inlet (34) is connected to the upper port of the second accommodating cavity (41).

20. The cleaning machine according to claim 19, characterized in that: The diameter of the third inlet (34) is larger than the inner diameter of the second accommodating cavity (41). The upper part of the lower shell (4) gradually expands its inner diameter near the upper end of the second accommodating cavity (41) to form a guide part (412) that can smoothly transition and connect with the inner bottom wall of the first accommodating cavity (31). The outer edge of the guide part (412) is arranged near the inner edge of the third inlet (34).

21. The cleaning machine according to claim 13, characterized in that: The pumping mechanism also includes a drive unit (5) for driving the upper impeller (1) and the lower impeller (2) to rotate. The drive unit (5) is located on the outer bottom wall of the housing and the output shaft (51) is arranged upward. The output shaft (51) passes through the bottom wall of the housing and the lower housing (4) from bottom to top and extends into the first accommodating cavity (31) of the upper housing (3) and is connected to the lower impeller (2) and the upper impeller (1) respectively.

22. The cleaning machine according to claim 21, characterized in that: The output shaft (51) is radially limited by the upper impeller (1) and the lower impeller (2) respectively. A nut is provided at the upper end of the output shaft (51) to prevent the upper impeller (1) from moving axially along the output shaft (51).

23. The cleaning machine according to claim 13, characterized in that: The housing (6) is provided with a water supply pipe (7) for supplying water to the middle spray arm (a1) and the top spray arm (a2). The input end of the water supply pipe is connected to the water outlet (422) of the lower housing (4), and the output end of the water supply pipe (7) is connected to the middle spray arm (a1) and the top spray arm (a2) respectively.

24. The cleaning machine according to claim 23, characterized in that: The box (6) is provided with a partition in the middle that can divide its inner cavity into an upper cavity and a lower cavity that are relatively independent. The bottom spray arm is located at the bottom of the lower cavity, the middle spray arm (a1) is located in the middle or upper part of the lower cavity, and the top spray arm (a2) is located in the upper cavity.

25. The cleaning machine according to claim 24, characterized in that: The top spray arm (a2) includes a first spray arm (a21) extending from the water supply pipe (7) to the middle of the box (6) and a second spray arm (a22) located above the first spray arm (a21) and close to the inner wall of the box (6). The first spray arm (a21) is located at the bottom of the upper cavity and is used to spray water upwards. The second spray arm (a22) is located in the middle or upper part of the upper cavity and is used to spray water to the area above the first spray arm (a21).

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