A water level detection device for a clothing care machine

Abstract

The present invention discloses a water level detection device for a clothing care machine, which includes a water tank body, a probe rod arranged therein, and a floating body arranged in cooperation therewith. A shielding cover is sleeved outside the probe rod in the water tank body. A double-ear water guide box and a reduction motor are respectively arranged on the inner and outer sides of the cover plate. A reset stretching component is arranged between the rotating shaft and the pushing block; a secondary cleaning brush is arranged on the upper part of the probe rod, and rotating paddle blocks are circumferentially arranged on both end faces of the floating body. By sleeving a shielding cover outside the probe rod and the floating body, it is convenient to isolate impurities in the filling water. Under the cooperation of the circulating water pump, the reduction motor, the connecting rod, the double-headed convex block and the pushing block, the water spray head can spray water under reciprocating deflection. The rotating paddle blocks on the floating body rotate under the action of the sprayed water flow, and the main cleaning brush and the secondary cleaning brush sequentially clean the impurities on both end faces of the floating body, reducing the probability of the floating body being stuck due to impurity accumulation, and improving its water level detection accuracy and customer satisfaction.

Description

Technical Field

[0001] The invention belongs to the technical field of water level detection for clothing care machines, and in particular relates to a water level detection device for a clothing care machine. Background Art

[0002] A clothing care machine is an appliance that uses electric drive to remove wrinkles and odors from clothing in a closed cavity and has one or more functions such as sterilization, mite removal, allergy removal, and drying. The clothing care machine has the function of providing steam care for the clothes placed in it. Therefore, a detachable water tank needs to be provided in the clothing care machine to provide a temporary water source. During the steam care process, the water level in the water tank will continue to drop. In order to warn the user that the water level in the water tank is low and water needs to be replenished in time, a water level detection device is usually provided in the water tank or on the water outlet pipe connected to the water tank. The water level detection device in the water tank is usually composed of a probe rod with a water level detection function and an annular magnetic float. If the low water level of the water tank needs to be detected, the above-mentioned device will be provided at the bottom of the water tank. A reed switch is built into the bottom of the probe rod. The continuous drop in water level will drive the float to move down to the reed switch area of ​​the probe rod. The magnetic block on the float will turn on the circuit connected to the reed switch, thereby driving the alarm system through an external circuit.

[0003] For example, the Chinese patent with the announcement number CN211772270U discloses an automatic drainage device for a clothing care machine, which is characterized by comprising a water collecting box, a box cover matched with the water collecting box, a water pump installed in the water collecting box and a water level detection mechanism installed on the box cover. A water collecting pipe is also provided on the box cover. The water level detection mechanism comprises a probe rod, an annular magnetic float sleeved on the probe rod and an open retaining ring clamped on the lower part of the probe rod. The water collecting pipe is integrally formed with the box cover. A water outlet hole is provided on the box cover, and the water outlet pipe of the water pump extends out of the water outlet hole. The box cover is fixedly connected to the water collecting box by screws, and mounting ears with mounting holes are provided on both sides of the lower part of the water collecting box.

[0004] However, the above scheme has the following shortcomings: liquid water needs to be added to the water collecting tank regularly. If the liquid water added to the water collecting tank contains more impurities, for example, particulate matter in tap water will accumulate on the float. Although the tap water can meet the drinking standard, with the aging of the water supply network or the pollution of the community's water pumping facilities and water storage tanks, the tap water entering the residents will inevitably contain rust particles, which will be absorbed by the magnetic block on the float, and impurities in the water will scale on the float, causing the float to easily get stuck on the probe rod or the buoyancy to change, resulting in inaccurate water level detection. Therefore, for users who use the above water source, the water level detection device is prone to malfunction, reducing user satisfaction.

[0005] To this end, we propose a water level detection device for a clothing care machine to solve the problems mentioned in the above background technology. Summary of the Invention

[0006] The purpose of the present invention is to provide a water level detection device for a clothing care machine to solve the problems existing in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A water level detection device for a clothing care machine includes a water tank body, a probe rod arranged therein, and a floating body arranged in cooperation. An isolation cover is sleeved outside the probe rod in the water tank body. Ventilation mesh openings and water inlet filter openings are respectively arranged on the upper and lower parts of the side wall of the isolation cover. A cleaning brush block is movably arranged above the water inlet filter opening on the side part of the isolation cover, and a water injection and downward movement assembly is arranged between the side part of the isolation cover and the cleaning brush block;

[0009] A sewage collection ring groove is annularly arranged on the outer side of the connection part of the probe rod at the inner bottom end surface of the water tank body, and a sewage discharge port is arranged on the water inlet side of the water inlet filter opening at the inner bottom end surface of the water tank body. The sewage collection ring groove and the water outlet side of the sewage discharge port are both connected to a circulation water pump, and the water outlet end of the circulation water pump is connected to a water purification box;

[0010] A cover plate is detachably and sealingly inserted into the side wall of the water tank body. A double-ear water guide box and a reduction motor are respectively arranged on the inner and outer sides of the cover plate. The water outlet end of the water purification box is communicated with the double-ear water guide box. A deflectable corrugated water pipe is communicated with the upper ear side wall of the double-ear water guide box. The outer side of the corrugated water pipe is connected to a spray head. A rotating shaft is movably sealed through the inner concave side wall of the double-ear water guide box and the side wall of the cover plate. The two ends of the rotating shaft are respectively connected to the output shaft end of the reduction motor and a double-headed convex block. Pushing blocks are arranged on the opposite surfaces of adjacent spray heads, and the pushing blocks are in contact and sliding connection with the double-headed convex block. A reset stretching assembly is arranged between the rotating shaft and the pushing blocks;

[0011] A guide rail cylinder is communicated with the bottom end of the double-ear water guide box. A reset spring sleeve rod slides through the side wall of the guide rail cylinder. A main cleaning brush is arranged on the extending part of the reset spring sleeve rod. A secondary cleaning brush is arranged on the upper part of the probe rod. Rotating paddle blocks are annularly arranged on both end faces of the floating body.

[0012] Preferably, a waterproof partition board is arranged on the upper part of the inner side of the isolation cover. The wire end of the probe rod is sealingly penetrated through the waterproof partition board and the side wall of the water tank body. The top of the isolation cover is of a bevel structure. The upper edge of the port of the ventilation mesh opening is flush with the bottom end surface of the waterproof partition board. An adapter hole plate is arranged on the side wall of the isolation cover.

[0013] Preferably, the water injection and downward movement component includes an upward movement spring sleeve rod arranged on the upper end surface of the cleaning brush block. The upward movement spring sleeve rod slidably penetrates through a preset hole on the connection hole plate. A water receiving box is arranged at the top end of the upward movement spring sleeve rod. An auxiliary cleaning brush is arranged on the side of the water receiving box. The auxiliary cleaning brush is in contact connection with the air permeable mesh opening. When water is injected above the water receiving box, the water receiving box pushes the cleaning brush block and the auxiliary cleaning brush to move downward through the upward movement spring sleeve rod.

[0014] Preferably, an anti-escape funnel ring is arranged in the dirt collection ring groove. The water inlet end of the circulating water pump is communicated with the inner side wall of the dirt collection ring groove through a water inlet pipe. A branch water pipe is arranged between the sewage discharge port and the water inlet pipe. When the circulating water pump works, the sewage discharge port generates a downward suction force on the cleaning brush block. A water purification filler layer is arranged in the water purification box.

[0015] Preferably, when the float body is at the highest position on the probe rod, the spray heads are symmetrically located on the inclined side of the float body. A notch ring groove is arranged on the upper part of the side wall of the float body. The movement trajectory of the water sprayed by the spray heads can face the notch ring groove. The contact surface between the double-headed convex block and the pushing block is always a curved surface.

[0016] Preferably, the reset stretching component includes a sliding ring slidably sleeved on the rotating shaft and an inner pulling spring. The two ends of the inner pulling spring are respectively connected with the concave surface of the double-ear water guiding box and the side of the sliding ring. The inner pulling spring generates a spring pulling force on the sliding ring in the direction of the cover plate. A connecting rod is rotatably connected between the pushing block and the sliding ring. When the double-headed convex block rotates, it can drive the spray head to deflect vertically.

[0017] Preferably, the reset spring sleeve rod generates a spring pulling force on the main cleaning brush in the direction of the cover plate. A water receiving groove block is arranged at the inserted end of the reset spring sleeve rod. The outermost end of the reset spring sleeve rod is initially located outside the float body. When the circulating water pump works, the water receiving groove block pushes the reset spring sleeve rod to move outward. At this time, the main cleaning brush is located below the float body. At the same time, the water sprayed by the spray head drives the float body to rotate through the rotating paddle block. The main cleaning brush and the secondary cleaning brush can be in clean contact with the two end faces of the float body.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: By sleeving an isolation cover on the probe rod and the float body, it is convenient to isolate impurities in the injected water. With the cooperation of the circulating water pump, the reduction motor, the connecting rod, the inner pulling spring, the double-headed convex block and the pushing block, the spray head can spray water under reciprocating deflection. The rotating paddle block on the float body rotates under the action of the sprayed water. The main cleaning brush and the secondary cleaning brush sequentially clean the impurities on the two end faces of the float body, reducing the probability of the float body being stuck due to impurity accumulation, and improving its water level detection accuracy and customer satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall front view structural schematic diagram of the present invention;

[0020] Figure 2 is Figure 1 the partial sectional view schematic diagram;

[0021] Figure 3 is Figure 2 the partial front view schematic diagram;

[0022] Figure 4 is Figure 2 the partial schematic diagram of the isolation cover, cleaning brush block and anti - escape funnel ring area;

[0023] Figure 5 is Figure 4 the structural schematic diagram of the cleaning brush block moving downward;

[0024] Figure 6 is Figure 2 the structural schematic diagram of the float body and the deflected position of the water spray head;

[0025] Figure 7 is Figure 6 the structural schematic diagram of the contact between the float body and the main cleaning brush;

[0026] Figure 8 is the structural schematic diagram of the cleaning brush block, upward moving spring sleeve rod, water receiving box and auxiliary cleaning brush of the present invention;

[0027] Figure 9 is the structural schematic diagram of the probe rod, float body and double - ear water guiding box positions of the present invention;

[0028] Figure 10 is Figure 9 the partial schematic diagram of the probe rod and the double - ear water guiding box;

[0029] Figure 11 is Figure 10 the partial schematic diagram of the rotating shaft area.

[0030] In the figure: 1. Water tank body; 2. Probe rod; 3. Float body; 4. Isolation cover; 5. Water inlet filter port; 6. Cleaning brush block; 7. Sewage collection ring groove; 8. Drain port; 9. Circulating water pump; 10. Water purification box; 11. Cover plate; 12. Double-ear water guide box; 13. Reduction motor; 14. Corrugated water pipe; 15. Sprinkler head; 16. Rotating shaft; 17. Double-headed convex block; 18. Pushing block; 19. Guide rail cylinder; 20. Reset spring sleeve rod; 21. Main cleaning brush; 22. Sub-cleaning brush; 23. Rotating paddle block; 24. Waterproof partition board; 25. Connecting hole plate; 26. Upward moving spring sleeve rod; 27. Water receiving box; 28. Auxiliary cleaning brush; 29. Anti-escape funnel ring; 30. Water inlet pipe; 31. Branch water pipe; 32. Water purification filler layer; 33. Notch ring groove; 34. Slip ring; 35. Inner pull spring; 36. Water receiving groove block 101. Air permeable net port; 102. Connecting rod; 201. Hypotenuse part; 202. Decorative outer shell. Detailed implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] Please refer to Figure 1-11 , the present invention provides a technical solution:

[0033] Embodiment 1:

[0034] A water level detection device for a clothing care machine includes a water tank body 1, a probe rod 2 arranged therein, and a cooperating float body 3. The float body 3 has a cavity inside, can rise and fall along with the liquid level change, and a magnetic block is preset on the float body 3 for convenient cooperation with the reed switch at the bottom of the probe rod 2. An isolation cover 4 is sleeved outside the probe rod 2 in the water tank body 1. Air permeable net ports 101 and a water inlet filter port 5 are respectively arranged on the upper and lower parts of the side wall of the isolation cover 4. The setting of the air permeable net port 101 facilitates the air exchange between the water tank body 1 and the inside of the isolation cover 4, so that the water filled in the water tank body 1 can be completely injected into the inner cavity of the isolation cover 4. The setting of the water inlet filter port 5 can prevent large particle impurities from entering the probe rod 2 and the float body 3, improving the use cleanliness. A cleaning brush block 6 is movably arranged above the water inlet filter port 5 on the side of the isolation cover 4. The side of the cleaning brush block 6 is a hard PVC brush. The vertical movement of the cleaning brush block 6 can clean the impurities accumulated on the water inlet filter port 5. And a water injection downward movement component is arranged between the side of the isolation cover 4 and the cleaning brush block 6. The water injection downward movement component can drive the cleaning brush block 6 to move vertically when injecting liquid water into the water tank body 1;

[0035] On the inner bottom end surface of the water tank body 1, a sewage collection ring groove 7 is annularly arranged outside the connection part of the probe rod 2. The upper cross-section of the sewage collection ring groove 7 is an annular funnel structure, and the lower part is an annular structure. And on the inner bottom end surface of the water tank body 1 on the water inlet side of the water inlet filter screen opening 5, a sewage discharge port 8 is provided. The cross-section of the sewage discharge port 8 is a horn-shaped structure. Both the sewage collection ring groove 7 and the water outlet side of the sewage discharge port 8 are connected to the circulation water pump 9. Through the circulation water pump 9, negative pressure suction can be generated at the ends of the sewage collection ring groove 7 and the sewage discharge port 8 respectively. The water outlet end of the circulation water pump 9 is connected to the water purification box 10. The circulation water pump 9 can be the TL-C01-D / 4 series produced by Changsha Jiapu Pump Industry Co., Ltd. The displacement specification of the circulation water pump 9 can be adaptively adjusted according to the size and volume of the water tank body 1;

[0036] A cover plate 11 is detachably and sealed and inserted into the side wall of the water tank body 1. Through the cover plate 11, it is convenient to maintain the relevant components of the probe rod 2 inside the isolation cover 4. On the inner and outer sides of the cover plate 11, a double-ear water guide box 12 and a reduction motor 13 are respectively fixed by screwing. The reduction motor 13 is the 15W-3GN3-15 series reducer produced by Ningbo Kejin Motor Co., Ltd. The reduction motor 13 can be adaptively adjusted according to the torque size received at the output shaft end. The water outlet end of the water purification box 10 is communicated with the double-ear water guide box 12. The water purification box 10 can filter impurities in the flowing water body. The double-ear water guide box 12 is a double-ear block structure. As Figure 6 or Figure 10 shown, the double-ear water guide box 12 is a double-ear block type structure. The double-ear water guide box 12 is internally provided with a double-ear type water guide cavity. And the water guide cavity inside the double-ear water guide box 12 is a horn-shaped structure near the ear side, which is convenient for guiding and accelerating the flow of the water body inside the water guide cavity. A deflectable corrugated water pipe 14 is communicated with the side wall of the ear part on the double-ear water guide box 12. The corrugated water pipe 14 can be composed of a stainless steel wave guide pipe and has an angle deflection characteristic. The outside of the corrugated water pipe 14 is connected to the spray head 15. The spray head 15 is a mature product of the existing technology. The water outlet end of the spray head 15 can spray out a water column. The inner concave side wall of the double-ear water guide box 12 and the side wall of the cover plate 11 are dynamically sealed and penetrated by a rotating shaft 16. Both ends of the rotating shaft 16 are respectively connected to the output shaft end of the reduction motor 13 and the double-head convex block 17. The output shaft end of the reduction motor 13 can drive the rotating shaft 16 to rotate slowly. Push blocks 18 are welded on the opposite surfaces of adjacent spray heads 15. The bottom of the push block 18 is a spherical column structure as Figure 10 shown. The push block 18 is in contact and sliding connection with the double-head convex block 17. A reset stretching component is arranged between the rotating shaft 16 and the push block 18. Through the reset stretching component, it is convenient to generate a tensile force to the right side on the push block 18;

[0037] A guide rail cylinder 19 is connected to the bottom end of the double-ear water guide box 12. A through hole is preset inside the guide rail cylinder 19 and is communicated with the water guide cavity of the double-ear water guide box 12. A reset spring sleeve rod 20 slides through the through hole at the side wall of the guide rail cylinder 19. The reset spring sleeve rod 20 has a spring restoring force to the right. A main cleaning brush 21 is screwed and fixed to the upper end of the extending part of the reset spring sleeve rod 20. A secondary cleaning brush 22 is arranged on the upper part of the probe rod 2. The main cleaning brush 21 and the secondary cleaning brush 22 are made of the same material as the cleaning brush block 6. The main cleaning brush 21 and the secondary cleaning brush 22 can respectively clean the accumulated impurities on both end faces of the float body 3. Rotating paddle blocks 23 are circumferentially arranged on both end faces of the float body 3. The rotating paddle blocks 23 have an oblique angle with the water flow direction sprayed by the water spray head 15. Therefore, when the water column is sprayed onto the rotating paddle blocks 23 by the water spray head 15, the float body 3 will be driven to rotate.

[0038] Embodiment 2:

[0039] On the basis of Embodiment 1, the water injection downward movement assembly is further described. A waterproof partition board 24 is adhesively bonded or screwed and sealed and fixed to the upper part inside the isolation cover 4. The wire end of the probe rod 2 is hermetically penetrated through the waterproof partition board 24 and the side wall of the water tank body 1. The above setting facilitates leading out the prefabricated wire on the probe rod 2 to an external power supply under the condition of no water. The top of the isolation cover 4 is of a bevel structure. The bevel structure design prevents the accumulation of impurities in the injected water. The upper edge of the port of the air permeable mesh port 101 is flush with the bottom end face of the waterproof partition board 24, avoiding the formation of an air cavity inside the isolation cover 4. At the same time, the waterproof partition board 24 can also be set to have an inclination angle of 5°, and the high position part of the waterproof partition board 24 is attached to the inner wall of the water tank body 1. This setting can completely prevent the generation of an air cavity or air bubbles below the waterproof partition board 24 inside the isolation cover 4, so that the generated air bubbles can be discharged through the air permeable mesh port 101 along the bevel of the waterproof partition board 24. A connecting hole plate 25 is welded and fixed to the side wall of the isolation cover 4. The water injection downward movement assembly includes an upward movement spring sleeve rod 26 arranged on the upper end face of the cleaning brush block 6. The upward movement spring sleeve rod 26 slides through a preset hole on the connecting hole plate 25. The upper spring of the upward movement spring sleeve rod 26 is fixed on the connecting hole plate 25, so that the upward movement spring sleeve rod 26 has a spring thrust in the upward direction. As Figure 8 shown, a water receiving box 27 is welded or screwed and fixed to the top end of the upward movement spring sleeve rod 26. The water receiving box 27 can be arranged below the water injection port of the water tank body 1, so that when liquid water is injected into the water tank body 1, it will fall into the water receiving box 27, thereby generating a downward thrust on the water receiving box 27. An auxiliary cleaning brush 28 is screwed and fixed to the side of the water receiving box 27. The auxiliary cleaning brush 28 is in contact connection with the air permeable mesh port 101. When water is injected above the water receiving box 27, the water receiving box 27 pushes the cleaning brush block 6 and the auxiliary cleaning brush 28 to move downward through the upward movement spring sleeve rod 26. The above setting can enable the cleaning brush block 6 and the auxiliary cleaning brush 28 to respectively clean the accumulated impurities on the outer surfaces of the water inlet filter mesh port 5 and the air permeable mesh port 101, improving the use cleanliness.

[0040] Example 3:

[0041] On the basis of Example 1, the areas of the sewage collection ring groove 7 and the float body 3 are further described. An anti-escape funnel ring 29 is arranged in the sewage collection ring groove 7. The arrangement of the anti-escape funnel ring 29 can prevent the impurities collected in the sewage collection ring groove 7 from being squeezed out by the water flowing in through the water inlet filter screen opening 5 when filling or draining water into the water tank body 1. A water inlet pipe 30 is connected between the water inlet end of the circulating water pump 9 and the inner side wall of the sewage collection ring groove 7. The water inlet pipe 30 includes an outer pipe part and a water channel part communicating with the inner side wall of the sewage collection ring groove 7. A branch water pipe 31 is arranged between the sewage outlet 8 and the water inlet pipe 30. When the circulating water pump 9 works, the sewage outlet 8 generates a downward suction force on the cleaning brush block 6, which can also push the cleaning brush block 6 and the auxiliary cleaning brush 28 downward. A water purification filler layer 32 is arranged in the water purification box 10. The water purification filler layer 32 can be an activated carbon layer, a ceramsite layer and related series of water purification materials. The water purification filler layer 32 facilitates filtering impurities from the flowing water body. A decorative shell 202 is detachably arranged on the side of the water tank body 1 by screwing. The decorative shell 202 can cover and beautify the circulating water pump 9, the reduction motor 13 and the water purification box 10. When the float body 3 is at the highest position on the probe rod 2, as Figure 6 shown, the spray heads 15 are symmetrically located on the inclined sides of the float body 3, and a notch ring groove 33 is provided on the upper part of the side wall of the float body 3. The movement track of the water flow sprayed by the spray heads 15 can face the notch ring groove 33, which is convenient for the spray heads 15 to push the float body 3 downward when swinging vertically. The contact surface between the double-headed convex block 17 and the pushing block 18 is always a curved surface, which is convenient for the continuous contact between the double-headed convex block 17 and the pushing block 18.

[0042] Example 4:

[0043] On the basis of the first embodiment, the reset stretching component will be further described. The reset stretching component includes a slip ring 34 slidably sleeved on the rotating shaft 16 and an inner pulling spring 35. The two ends of the inner pulling spring 35 are respectively connected to the concave surface inside the double-ear water guide box 12 and the side part of the slip ring 34. The inner pulling spring 35 generates a spring pulling force on the slip ring 34 in the direction of the cover plate 11. Axle seats are welded on both the pushing block 18 and the slip ring 34. A connecting rod 102 is rotatably connected between the pushing block 18 and the slip ring 34 through the axle seats. Moreover, bevel edges 201 are provided on the opposite surfaces of the side walls of the ears of the double-ear water guide box 12. The design of the bevel edges 201 prevents the connecting rod 102 from colliding with the double-ear water guide box 12 when it deflects. When the double-headed convex block 17 rotates, it can drive the water spray head 15 to deflect vertically with the assistance of the pushing block 18 and the inner pulling spring 35. When both the protruding parts at the two ends of the double-headed convex block 17 are in contact with the corresponding pushing blocks 18, that is, when the double-headed convex block 17 is vertically placed, the adjacent two water spray heads 15 are in a horizontal state; when the protruding parts at the two ends of the double-headed convex block 17 are horizontally placed, the inner pulling spring 35 pushes the slip ring 34 to move rightward, and the connecting rod 102 pulls the corresponding water spray head 15 to deflect through the pushing block 18. At this time, the two water spray heads 15 are in the Figure 6 state. The reset spring sleeve rod 20 generates a spring pulling force on the main cleaning brush 21 in the direction of the cover plate 11. A water receiving groove block 36 is welded to the inserted end of the reset spring sleeve rod 20. In the initial state, the outermost end of the reset spring sleeve rod 20 is located on the outer side of the float body 3. At this time, the reset spring sleeve rod 20 will not collide with the float body 3. When the circulating water pump 9 works, it is necessary to ensure that the float body 3 is at the highest position of the probe rod 2, that is, liquid water exceeding the position of the isolation cover 4 is injected into the water tank body 1. The liquid water flowing into the double-ear water guide box 12 will generate a water pushing force on the water receiving groove block 36 to the left through the guide rail cylinder 19. The water receiving groove block 36 pushes the reset spring sleeve rod 20 to move outward. At this time, the main cleaning brush 21 is located below the float body 3. The outward movement of the reset spring sleeve rod 20 can block the downward movement of the float body 3 and limit the vertical movement distance of the float body 3, effectively preventing the float body from automatically sinking due to a malfunction. At the same time, the water flow sprayed by the water spray head 15 drives the float body 3 to rotate through the rotating paddle block 23. The main cleaning brush 21 and the secondary cleaning brush 22 can respectively clean and contact the two end faces of the float body 3. Specifically, when the float body 3 rotates at a high position of the probe rod 2, the secondary cleaning brush 22 can clean the upper end face of the float body 3. When the water column is sprayed into the side of the notch ring groove 33 due to the deflection of the water spray head 15, the water column will push the float body 3 to swing vertically within the limited area of the reset spring sleeve rod 20, so as to perform a cleaning operation between the lower end face of the rotating float body 3 and the main cleaning brush 21.

[0044] The working principle is as follows: During the use of the water level detection device in the water tank body 1, first connect the power supply terminals of the circulating water pump 9 and the reduction motor 13 to the circuit of the clothing care machine, and connect the control terminals of the circulating water pump 9 and the reduction motor 13 to the controller of the clothing care machine. The opening timing of the circulating water pump 9 and the reduction motor 13 is controlled through the setting program of the controller in the clothing care machine. Preferably, the start timing is when the water level in the water tank body 1 exceeds the height of the isolation cover 4, and the number of starts is once after the water is filled. It will not start during the use of the water tank body 1 to avoid affecting the use of the float body 3. Only during the pre-cleaning just after adding water, when water is added to the water tank body 1, the added water will first fall on the water receiving box 27. The water receiving box 27 will overcome the upward moving spring sleeve rod 26 under the water thrust and drive the cleaning brush block 6 and the auxiliary cleaning brush 28 to move downward respectively. When the circulating water pump 9 starts, negative pressure suction will be generated on the water inlet side of the circulating water pump 9 on the side of the dirt collection ring groove 7 and the sewage outlet 8. The negative pressure suction on the side of the sewage outlet 8 will also generate a downward suction force on the cleaning brush block 6, so that the cleaning brush block 6 and the auxiliary cleaning brush 28 can respectively clean the impurities on the outer surfaces of the water inlet filter net opening 5 and the air permeable net opening 101 during the downward movement in the above two cases. At the same time, the water inlet pipe 30 and the branch water pipe 31 can respectively discharge the accumulated impurities on the side of the dirt collection ring groove 7 and the sewage outlet 8 into the water purification box 10 through the circulating water pump 9 to be filtered and purified by the water purification filler layer 32. The water purification box 10 can also be installed at the water inlet end of the circulating water pump 9 to avoid inhaling impurities and polluting the circulating water pump 9;

[0045] When the float body 3 is at the high position of the probe rod 2, the circulating water pump 9 discharges the water body sucked by the water inlet pipe 30 into the water guide cavity in the double-ear water guide box 12 through the water purification box 10. Part of the water in the water guide cavity will be diverted into the guide rail cylinder 19 to push the water receiving groove block 36 to move to the left. The water receiving groove block 36 overcomes the reverse spring force generated by the reset spring sleeve rod 20 and extends under the float body 3 to limit the downward displacement of the float body 3. The output shaft end of the reduction motor 13 drives the double-headed convex block 17 to rotate through the rotating shaft 16. Under the cooperation of the double-headed convex block 17 and the pushing block 18 on the water spray head 15, the water spray head 15 can be deflected under the action of the corrugated water pipe 14. At the same time, the inner pull spring 35 will generate a pulling force to the right on the connecting rod 102 through the slip ring 34, so as to facilitate the pushing block 18 to always slide and contact the double-headed convex block 17. Under the cyclic rotation of the double-headed convex block 17, the adjacent water spray heads 15 can be vertically reciprocally deflected. When the water spray head 15 sprays water onto the rotating paddle block 23, it will drive the float body 3 to rotate. The auxiliary cleaning brush 22 located on the upper part of the probe rod 2 cleans the upper end surface of the float body 3. And when the water column sprayed by the upper water spray head 15 faces the notch ring groove 33 on the float body 3, the float body 3 will move downward under the action of the water thrust, and the reset spring sleeve rod 20 will limit the downward displacement of the float body 3, so that the main cleaning brush 21 and the lower end surface of the float body 3 rotate relatively and clean. At the same time, the sprayed water flow can clean the side surface of the probe rod 2. The start time of the above-mentioned circulating water pump 9 and reduction motor 13 can be set to one minute. In order to improve the cleaning effect, an environmentally friendly cleaning agent can also be added to the injected water. The environmentally friendly cleaning agent is a product of the prior art and can effectively clean the water scale. At the same time, it is necessary to ensure that the added environmentally friendly cleaning agent will not affect the care of clothes;

[0046] By sleeving the isolation cover 4 outside the probe rod 2 and the float body 3, it is convenient to isolate the impurities in the injected water. Under the cooperation of the circulating water pump 9, the reduction motor 13, the connecting rod 102, the inner pull spring 35, the double-headed convex block 17 and the pushing block 18, the water spray head 15 can spray water under the reciprocating deflection. The rotating paddle block 23 on the float body 3 rotates under the action of the sprayed water flow. The main cleaning brush 21 and the auxiliary cleaning brush 22 sequentially clean the impurities on both end surfaces of the float body 3, reducing the probability of the float body 3 being stuck due to impurity accumulation, and improving its water level detection accuracy and customer satisfaction.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water level detection device for a clothing care machine, comprising a water tank body (1), a probe rod (2) arranged therein, and a cooperating float body (3). Characterized in that: An isolation cover (4) is sleeved outside the probe rod (2) inside the water tank body (1). Ventilation mesh openings (101) and water inlet filter openings (5) are respectively arranged on the upper and lower parts of the side wall of the isolation cover (4). A cleaning brush block (6) is movably arranged above the water inlet filter opening (5) on the side of the isolation cover (4), and a water injection and downward movement assembly is arranged between the side of the isolation cover (4) and the cleaning brush block (6). A sewage collection ring groove (7) is annularly arranged outside the connection part of the probe rod (2) on the inner bottom end surface of the water tank body (1), and a sewage discharge port (8) is arranged on the water inlet side of the water inlet filter opening (5) on the inner bottom end surface of the water tank body (1). The sewage collection ring groove (7) and the water outlet side of the sewage discharge port (8) are both connected to a circulation water pump (9), and the water outlet end of the circulation water pump (9) is connected to a water purification box (10). A cover plate (11) is detachably and sealingly inserted into the side wall of the water tank body (1). A double-ear water guide box (12) and a reduction motor (13) are respectively arranged on the inner and outer sides of the cover plate (11). The water outlet end of the water purification box (10) is communicated with the double-ear water guide box (12). A deflectable corrugated water guide pipe (14) is communicated with the upper ear side wall of the double-ear water guide box (12). The outer side of the corrugated water guide pipe (14) is connected to a spray head (15). A rotating shaft (16) is movably sealed through the inner concave side wall of the double-ear water guide box (12) and the side wall of the cover plate (11). The two ends of the rotating shaft (16) are respectively connected to the output shaft end of the reduction motor (13) and a double-headed convex block (17). Push blocks (18) are arranged on the opposite surfaces of adjacent spray heads (15), and the push blocks (18) are in contact and sliding connection with the double-headed convex block (17). A reset stretching assembly is arranged between the rotating shaft (16) and the push block (18). The reset stretching assembly includes a sliding ring (34) slidably sleeved on the rotating shaft (16) and an inner pulling spring (35). The two ends of the inner pulling spring (35) are respectively connected to the inner concave surface of the double-ear water guide box (12) and the side part of the sliding ring (34). The inner pulling spring (35) generates a spring pulling force on the sliding ring (34) towards the cover plate (11). A connecting rod (102) is rotatably connected between the push block (18) and the sliding ring (34). When the double-headed convex block (17) rotates, it can drive the spray head (15) to deflect vertically. The bottom end of the double-ear water guide box (12) is communicated with a guide rail cylinder (19). A reset spring sleeve rod (20) slidably penetrates through the side wall of the guide rail cylinder (19). A main cleaning brush (21) is arranged on the extending part of the reset spring sleeve rod (20). A secondary cleaning brush (22) is arranged on the upper part of the probe rod (2). Rotating paddle blocks (23) are annularly arranged on both end faces of the float body (3).

2. A water level detection device for a clothing care machine according to claim 1, Characterized in that: A waterproof partition board (24) is arranged at the upper part inside the isolation cover (4). The wire end of the probe rod (2) penetrates through the waterproof partition board (24) and the side wall of the water tank body (1) in a sealed manner. The top of the isolation cover (4) is of a bevel structure. The upper edge of the port of the air-permeable mesh opening (101) is flush with the bottom end face of the waterproof partition board (24). An adapter hole plate (25) is arranged on the side wall of the isolation cover (4).

3. The water level detection device for a clothes care machine according to claim 2, characterized in that: The water injection and downward movement assembly includes an upward movement spring sleeve rod (26) arranged on the upper end face of the cleaning brush block (6). The upward movement spring sleeve rod (26) slidably penetrates through a preset hole on the adapter hole plate (25). A water receiving box (27) is arranged at the top end of the upward movement spring sleeve rod (26). An auxiliary cleaning brush (28) is arranged on the side of the water receiving box (27). The auxiliary cleaning brush (28) is in contact connection with the air-permeable mesh opening (101). When water is injected above the water receiving box (27), the water receiving box (27) pushes the cleaning brush block (6) and the auxiliary cleaning brush (28) to move downward through the upward movement spring sleeve rod (26).

4. The water level detection device for a clothes care machine according to claim 1, characterized in that: An anti-escape funnel ring (29) is arranged in the sewage collection ring groove (7). The water inlet end of the circulating water pump (9) is communicated with the inner side wall of the sewage collection ring groove (7) by a water inlet pipe (30). A branch water pipe (31) is arranged between the sewage discharge port (8) and the water inlet pipe (30). When the circulating water pump (9) works, the sewage discharge port (8) generates a downward suction force on the cleaning brush block (6). A water purification filler layer (32) is arranged in the water purification box (10).

5. The water level detection device for a clothes care machine according to claim 1, characterized in that: When the float body (3) is at the highest position on the probe rod (2), the spray heads (15) are symmetrically located at the oblique sides of the float body (3). A notch ring groove (33) is arranged on the upper part of the side wall of the float body (3). The movement track of the water flow sprayed by the spray heads (15) can face the notch ring groove (33). The contact surface between the double-headed convex block (17) and the pushing block (18) is always a curved surface.

6. The water level detection device for a clothes care machine according to claim 1, characterized in that: The return spring sleeve rod (20) generates a spring pulling force on the main cleaning brush (21) in the direction of the cover plate (11). A water receiving groove block (36) is arranged at the inserted end of the return spring sleeve rod (20). The outermost end of the return spring sleeve rod (20) is initially located outside the float body (3). When the circulating water pump (9) works, the water receiving groove block (36) pushes the return spring sleeve rod (20) to move outward. At this time, the main cleaning brush (21) is located below the float body (3). At the same time, the water flow sprayed by the spray heads (15) drives the float body (3) to rotate through the rotating paddle block (23). The main cleaning brush (21) and the auxiliary cleaning brush (22) can be in clean contact with the two end faces of the float body (3).

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