A dust extractor air duct structure

Abstract

The utility model relates to a dust catcher air duct structure, including base and sewage tank, is equipped with the assembly slot for containing the sewage tank on the base, is equipped with the air inlet for connecting the external air pipe respectively and the air outlet of connecting the suction motor suction end on the assembly slot, the top cap is installed on the sewage tank, the first air duct and the second air duct have in the top cap, when the sewage tank is installed in the assembly slot, the first air duct and the second air duct are connected with the air inlet and the air outlet respectively, the utility model discloses the purpose lies in, provide a dust catcher air duct structure to solve the existing dust catcher, floor washing machine or cloth art washing machine sewage tank and base air duct butt joint difficult, lead to the technical problem of inconvenient product use.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning device technology, specifically relating to a vacuum cleaner air duct structure, which is particularly suitable for cleaning equipment such as wet and dry vacuum cleaners, floor scrubbers, or fabric cleaning machines. Background Technology

[0002] Vacuum cleaners, floor scrubbers, or fabric cleaners are typically equipped with a wastewater tank to collect wastewater and debris generated during the cleaning process. The wastewater tank is usually connected to the air inlet and outlet of the machine base via an air duct system, relying on the negative pressure generated by the suction motor to draw in dirt and expel air.

[0003] However, in existing vacuum cleaners, floor scrubbers, or fabric cleaning machines, the wastewater tank usually needs to be precisely aligned before it can be installed on the base. Users often need to repeatedly align the tank to adjust the exact position of the air duct during use. Otherwise, problems such as poor sealing and reduced suction power may occur. This process is time-consuming and laborious, resulting in a poor user experience, inconvenient operation, and an overall negative impact on the user experience. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum cleaner duct structure to solve the technical problem that the connection between the wastewater tank and the base duct of existing vacuum cleaners, floor scrubbers or fabric cleaning machines is difficult, resulting in inconvenience in product use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a vacuum cleaner duct structure, including a base and a wastewater tank, wherein the base is provided with an assembly slot for accommodating the wastewater tank, and the assembly slot is provided with an air inlet for connecting to an air inlet pipe and an air outlet for connecting to the suction end of a suction motor, wherein the wastewater tank is equipped with a top cover, and the top cover has a first air duct and a second air duct, wherein when the wastewater tank is installed in the assembly slot, the first air duct and the second air duct are respectively connected to the air inlet and the air outlet.

[0006] Preferably, a positioning part is formed on one side of the top cover, extending laterally relative to the sewage tank. The bottom of the positioning part is provided with an air inlet and an air outlet that are respectively connected to the first air duct and the second air duct. A positioning groove matching the positioning part is formed on one side of the assembly groove. The air inlet and the air outlet are located on both sides of the positioning groove.

[0007] Preferably, the bottom of the suction motor is provided with an exhaust seat, the exhaust seat is provided with an air outlet groove that communicates with the exhaust end of the suction motor, and a purification air groove is provided at the bottom of the base corresponding to the position of the air outlet groove.

[0008] Preferably, the bottom of the top cover is provided with an internally hollow filter section, the filter section is provided with a detachable filter assembly, and a filter air cavity is formed inside the top cover that communicates with the filter section and the filter air cavity is connected to a second air duct.

[0009] Preferably, the first air duct is connected to the air inlet via the external air pipe, and its other end is connected to the filter section via a long air box located below the top cover.

[0010] Preferably, the filter assembly includes a filter frame and a filter barrel for limiting the filter frame within the filter section. The filter barrel has a cavity, and a filter element is disposed within the cavity. The filter barrel has a plurality of filter openings corresponding to the outer surface of the filter element.

[0011] Preferably, the filter section has a hook at the bottom, and the filter barrel has locking parts on both sides. The locking parts have locking grooves that cooperate with the hook for limiting the movement. Rotating the filter barrel controls the engagement and disengagement of the hook and locking groove to install or remove the filter barrel.

[0012] Preferably, an upper stop bar is formed on one side of the locking groove, a limiting groove is formed on the upper stop bar, and a protrusion matching the limiting groove is provided on the hook. Rotating the filter barrel realizes the engagement and disengagement of the limiting groove and the protrusion.

[0013] Preferably, the top cover is detachably mounted on the sewage tank via a snap-fit ​​mechanism. The snap-fit ​​mechanism includes a push-button switch. The top cover has a movable position for mounting the push-button switch. The bottom of the push-button switch has a locking hook. The sewage tank has a slot that matches the locking hook. Pressing the push-button switch causes the locking hook to disengage from the slot to remove the top cover. A return spring is also provided between the movable positions of the push-button switch.

[0014] Preferably, the external air duct includes an outer tube installed on one side of the base for connecting the brush head and an inner tube disposed inside the base. One end of the inner tube is connected to the outer tube, and the other end extends into the air inlet for connecting to the first air duct.

[0015] Compared with the prior art, this utility model has the following advantages through the above technical solution: An assembly slot for placing the sewage tank is provided on the base, and the base also has an air inlet for connecting an external air duct and an exhaust port for connecting the suction end of the suction motor. A top cover for sealing the sewage tank is provided at the tank opening. A first air duct and a second air duct are formed inside the top cover, and the bottom surface of the top cover has an air inlet for sewage or impurities to enter the first air duct and an exhaust port for airflow filtered by the filter assembly inside the sewage tank to exit. When the sewage tank needs to be disassembled for cleaning, the sewage tank can be simply lifted out of the assembly slot to clean the impurities and sewage inside. When the sewage tank needs to be reinstalled, the user only needs to align the positioning part on the top cover with the positioning slot on the assembly slot of the base, and then place it downwards. During this process, the positioning part slides down along the positioning slot, automatically guiding the air inlet to align with the air inlet and the exhaust port to align with the exhaust port, thereby achieving rapid installation of the sewage tank and automatic connection of the air ducts.

[0016] In summary, in actual use, simply placing the wastewater tank in the assembly slot is sufficient to connect all the air ducts. Users do not need to look down to observe or repeatedly adjust the alignment, which greatly improves the installation speed and convenience, and makes the product more convenient to use. This solves the technical problem of difficulty in connecting the wastewater tank and the air duct of the machine base in existing vacuum cleaners, floor scrubbers, or fabric cleaning machines, which leads to inconvenience in product use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the assembly structure of the base and sewage tank of this utility model; Figure 3 This is a schematic diagram of the connection structure between the external air duct and the airflow duct of this utility model; Figure 4 This is a top view of the structure of this utility model; Figure 5 For the present utility model Figure 4 Schematic diagram of the cross-sectional structure at point AA; Figure 6 For the present utility model Figure 4 Schematic diagram of the cross-sectional structure at point BB; Figure 7This is a side sectional view of the present invention. Figure 8 This is a bottom view of the structure of this utility model; Figure 9 This is a schematic diagram of the sewage tank and suction motor structure of this utility model; Figure 10 This is a schematic diagram of the connection structure between the sewage tank and the external air duct of this utility model; Figure 11 This is a schematic diagram of the internal structure of the sewage tank of this utility model; Figure 12 This is a top view of the internal structure of the sewage tank of this utility model; Figure 13 This is a schematic diagram of the wastewater tank and filter assembly of this utility model; Figure 14 This is an exploded view of the filter section and filter assembly of this utility model; Figure 15 This is a schematic diagram of the filter barrel structure of this utility model; Figure 16 For the present utility model Figure 14 A partially enlarged structural diagram; The utility model reference information is as follows: 1. Base; 2. Wastewater tank; 3. External air duct; 4. Suction motor; 5. Filter assembly; 6. Exhaust base; 7. Push switch; 9. Filter section; 20. Movable position; 100. Airflow pipe; 101. Assembly slot; 102. Air inlet; 103. Exhaust outlet; 104. Positioning slot; 105. Purification air duct; 201. Top cover; 202. First air duct; 203. Second air duct; 204. Positioning part; 2 05. Air inlet; 206. Air outlet; 207. Filter chamber; 208. Long air box; 209. Slot; 301. Outer pipe; 302. Inner pipe; 401. Hook; 402. Protruding end; 501. Filter frame; 502. Filter barrel; 503. Filter element; 504. Filter port; 505. Locking part; 506. Locking groove; 507. Upper baffle; 508. Limiting groove; 601. Air outlet slot; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figure 1-16The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] like Figure 1-16The following describes a vacuum cleaner duct structure, including a base 1 and a wastewater tank 2. The base 1 can be a vacuum cleaner, floor scrubber, or fabric cleaning machine; in this embodiment, it is a fabric cleaning machine. The base 1 has an assembly slot 101 for accommodating the wastewater tank 2. The assembly slot 101 is used to install the wastewater tank 2 and a clean water tank. The assembly slot 101 has an air inlet 102 for connecting to an external air duct 3 and an air outlet 103 for connecting to the suction end of a suction motor 4. A top cover 201 is installed on the wastewater tank 2, and the top cover 201 has a handle for easy lifting of the wastewater tank 2. The unit 201 has a first air duct 202 and a second air duct 203. When the wastewater tank 2 is installed in the assembly slot 101, the first air duct 202 and the second air duct 203 are respectively connected to the air inlet 102 and the air outlet 103. In use, the base 1 is connected to a brush head or cleaning head through an external air duct 3. When cleaning, the brush head is aimed at the item to be cleaned, and then the suction motor 4 is started to create a negative pressure in the entire air duct structure system. Dirty airflow, water or impurities are drawn in from the brush head through the external air duct 3 and enter the first air duct 202 through the air inlet 102 and the air inlet pipe 205. Then the airflow enters the long air box 208 and is guided to the filter section 9. The filter components in the filter section 9 trap solid dirt inside, while the wastewater is kept in the wastewater tank 2. The preliminarily purified air enters the filter air chamber 207 and then flows into the second air duct 203. Finally, the clean air is drawn in by the suction motor 4 through the exhaust pipe 206 and the exhaust port 103, and is finally discharged from the air outlet slot 601 of the exhaust seat 6.

[0023] like Figure 2-7 As shown in Figures 9-13: A positioning part 204 is formed on one side of the top cover 201, extending laterally relative to the sewage tank 2. The positioning part 204 and the top cover 201 are integrally formed. The bottom of the positioning part 204 is provided with an air inlet 205 and an air outlet 206 that respectively connect to the first air duct 202 and the second air duct 203. A positioning groove 104 matching the positioning part 204 is formed on one side of the assembly groove 101. The air inlet 102 and the air outlet 103 are located on both sides of the bottom surface of the positioning groove 104. The positioning part 204 and the positioning groove 104 are provided so that when installing the sewage tank 2, the user only needs to align the positioning part 204 on the top cover 201 with the positioning groove 104 on the assembly groove 101 of the base 1, and then put it down. During this process, the positioning part 204 slides down along the positioning groove 104, automatically guiding the air inlet 205 to align with the air inlet 102 and the air outlet 206 to align with the air outlet 103. This design enables blind installation, eliminating the need for users to look down or repeatedly adjust the alignment, greatly improving installation speed and convenience.

[0024] Other examples Figure 3-5As shown, an airflow pipe 100 integrally formed with the base 1 is provided below the exhaust port 103. The airflow pipe 100 connects the second air duct 203 and the suction end of the suction motor 4 so as to draw clean gas into the suction motor 4. At the same time, the inner side of the exhaust port 103 has several latches, and the outer wall of the exhaust pipe port 206 has several slots that align with the latches. When the sewage tank 2 is installed in the assembly slot 101, the positioning part 204 is inserted into the positioning slot 104. The air inlet 205 and the exhaust pipe port 206 are respectively installed at the air inlet 102 and the exhaust port 103. The exhaust pipe port 206 extends into the exhaust port 103, and the slot on its side wall engages with the latches on the inner side of the exhaust port 103, realizing a slight restriction between the sewage tank 2 and the assembly slot 101. This restriction can be easily released with a large force to facilitate the removal of the sewage tank 2.

[0025] like Figure 6-9 As shown: The bottom of the suction motor 4 is provided with an exhaust seat 6. The suction motor 4 is fixedly installed on the exhaust seat 6 by a threaded connection. The exhaust seat 6 is provided with an air outlet slot 601 that is connected to the exhaust end of the suction motor 4. A purification air slot 105 is provided at the bottom of the base 1 corresponding to the position of the air outlet slot 601. The function of the exhaust seat 6 is to support the suction motor 4 and guide the filtered airflow to the air outlet slot 601. Through the purification air slot 102 at the bottom, the entire base 1 forms a self-circulating filtration structure, thereby ensuring that the exhaust airflow is clean airflow.

[0026] like Figure 13-16 As shown: The bottom of the top cover 201 is provided with a hollow filter section 9. The filter section 9 and the top cover 201 are integrally formed. The filter section 9 is provided with a detachable filter assembly 5. The detachable structure makes it easy to disassemble the filter assembly 5, thereby making it easier to clean the dirt inside. The top cover 201 forms a filter air chamber 207 that communicates with the filter section 9. The filter air chamber 207 is connected to the second air duct 203. The filter air chamber 207 is only connected to the second air duct 203 and not to the first air duct 202. The main function of the filter air chamber 207 is to draw the gas filtered by the filter assembly 5 upward and let it enter the second air duct 203 for discharge.

[0027] like Figure 10-13 As shown: The first air duct 202 is connected to the external air duct 3 through the air inlet 205, and its other end is connected to the filter section 9 through a long air box 208 set below the top cover 201. The long air box 208 is integrally formed below the top cover 201. A long slot is formed in the long air box 208 to connect the filter section 9 and the external air duct 3. Sewage, impurities or gas enter the filter section 9 from the long slot and then flow into the sewage tank 2.

[0028] like Figure 14-15As shown: The filter assembly 5 includes a filter frame 501 and a filter barrel 502 for limiting the filter frame 501 in the filter section 9. The filter barrel 502 has a cavity, and a filter element 503 is provided in the cavity. The filter element 503 is a HEPA filter element. The filter barrel 502 has a plurality of filter ports 504 corresponding to the outer surface of the filter element 503.

[0029] Specifically, the airflow passes through the filter port 504 on the filter barrel 502, is filtered by the filter element 503, and solid dirt is trapped. The preliminarily purified air enters the filter air chamber 207 and then flows into the second air duct 203.

[0030] like Figure 16 As shown: A hook 401 is provided below the filter section 9, and a locking part 505 is provided on both sides of the filter barrel 502. The locking part 505 is integrally formed on both sides of the top of the filter barrel 502. A locking groove 506 is provided on the locking part 505 to cooperate with the hook 401 for limiting. Rotating the filter barrel 502 controls the engagement and disengagement relationship between the hook 401 and the locking groove 506 to install or remove the filter barrel 502.

[0031] like Figure 15 As shown: an upper stop bar 507 is formed on one side of the locking groove 506. A limiting groove 508 is provided on the upper stop bar 507. A protruding end 402 that matches the limiting groove 508 is provided on the hook 401. Rotating the filter barrel 502 realizes the engagement and disengagement of the limiting groove 508 and the protruding end 402.

[0032] The filter assembly 5 is secured by a rotating snap-fit ​​mechanism. The filter canister 502 has locking parts 505 on both sides, with locking grooves 506 on each. A hook 401 is located below the filter section 9. During installation, the filter canister 502 is placed into the filter section 9, and then rotated at a certain angle. The hook 401 slides into the locking groove 506 and is locked in place by the engagement of the protrusion 402 with the limiting groove 508. During disassembly, the filter canister 502 is rotated in the opposite direction, and the hook 401 disengages from the locking groove 506, allowing the filter assembly to be removed for cleaning. This process requires no tools and can be completed by hand, making it very convenient.

[0033] like Figure 10-11As shown: The top cover 201 is detachably mounted on the sewage tank 2 via a snap-fit ​​mechanism. The top cover 201 consists of a base and a top cover, forming a sealed air duct inside. The snap-fit ​​mechanism includes a push-button switch 7. The top cover 201 has a movable position 20 for mounting the push-button switch 7. The bottom of the push-button switch 7 has a locking hook. The sewage tank 2 has a slot 209 that matches the locking hook. Pressing the push-button switch 7 disengages the locking hook from the slot 209 to remove the top cover 201. A return spring is also provided between the movable positions 20 of the push-button switch 7. A stop block is provided in the movable position 20. The stop block is correspondingly set with The reset spring is positioned in front of the connection end of the push switch 7. When the push switch 7 is pressed, the reset spring is in a charged state. At this time, the locking hook disengages from the slot 209, and the top cover 201 can be removed. In addition, several slots are provided along the opening of the sewage tank 2. Similarly, the top cover 201 is provided with locking ends that match these slots, so as to more stably fix the top cover 201 and the sewage tank 2. When in use, the push switch 7 is pressed to compress the reset spring, which can disengage the locking hook from the slot 209, thereby removing the top cover 201 from the sewage tank 2 for easy sewage dumping and cleaning.

[0034] like Figure 9-11 As shown: The external air duct 3 includes an outer tube 301 installed on one side of the base 1 for connecting the brush head and an inner tube 302 disposed inside the base 1. One end of the inner tube 302 is connected to the outer tube 301, and the other end extends into the air inlet 102 for connecting the first air duct 202.

[0035] The above description is merely a preferred embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A vacuum cleaner duct structure, comprising a base (1) and a wastewater tank (2), characterized in that: The base (1) is provided with an assembly slot (101) for accommodating the sewage tank (2). The assembly slot (101) is provided with an air inlet (102) for connecting an external air duct (3) and an air outlet (103) for connecting the suction end of a suction motor (4). The sewage tank (2) is equipped with a top cover (201). The top cover (201) has a first air duct (202) and a second air duct (203). When the sewage tank (2) is installed in the assembly slot (101), the first air duct (202) and the second air duct (203) are respectively connected to the air inlet (102) and the air outlet (103).

2. The vacuum cleaner duct structure according to claim 1, characterized in that: A positioning part (204) is formed on one side of the top cover (201) and extends laterally relative to the sewage tank (2). The bottom of the positioning part (204) is provided with an air inlet (205) and an air outlet (206) that are respectively connected to the first air duct (202) and the second air duct (203). A positioning groove (104) matching the positioning part (204) is formed on one side of the assembly groove (101). The air inlet (102) and the air outlet (103) are located on both sides of the positioning groove (104).

3. The vacuum cleaner duct structure according to claim 1, characterized in that: The bottom of the suction motor (4) is provided with an exhaust seat (6), and the exhaust seat (6) is provided with an air outlet groove (601) that is connected to the exhaust end of the suction motor (4). The bottom of the base (1) is provided with a purification air groove (105) corresponding to the position of the air outlet groove (601).

4. The vacuum cleaner duct structure according to claim 2, characterized in that: The bottom of the top cover (201) is provided with an internally hollow filter section (9), and the filter section (9) is provided with a detachable filter assembly (5). The top cover (201) has a filter air chamber (207) that communicates with the filter section (9), and the filter air chamber (207) is connected to the second air duct (203).

5. The vacuum cleaner duct structure according to claim 4, characterized in that: The first air duct (202) is connected to the external air duct (3) through the air inlet (205), and its other end is connected to the filter section (9) through a long air box (208) located below the top cover (201).

6. The vacuum cleaner duct structure according to claim 4, characterized in that: The filter assembly (5) includes a filter frame (501) and a filter barrel (502) for limiting the filter frame (501) in the filter section (9). The filter barrel (502) has a cavity, and a filter element (503) is provided in the cavity. The filter barrel (502) has a plurality of filter ports (504) on the outer surface of the filter element (503).

7. A vacuum cleaner duct structure according to claim 6, characterized in that: The filter section (9) is provided with a hook (401) below it, and the filter barrel (502) has locking parts (505) on both sides. The locking parts (505) are provided with locking grooves (506) that cooperate with the hook (401) for limiting the position. Rotating the filter barrel (502) controls the engagement and disengagement relationship between the hook (401) and the locking groove (506) to install or remove the filter barrel (502).

8. A vacuum cleaner duct structure according to claim 7, characterized in that: An upper stop bar (507) is formed on one side of the locking groove (506). A limiting groove (508) is provided on the upper stop bar (507). A protrusion (402) matching the limiting groove (508) is provided on the hook (401). Rotating the filter barrel (502) realizes the engagement and disengagement of the limiting groove (508) and the protrusion (402).

9. A vacuum cleaner duct structure according to any one of claims 1-8, characterized in that: The top cover (201) is detachably mounted on the sewage tank (2) by a snap-fit ​​mechanism. The snap-fit ​​mechanism includes a push switch (7). The top cover (201) has a movable position (20) for mounting the push switch (7). The bottom of the push switch (7) is provided with a locking hook. The sewage tank (2) is provided with a slot (209) that matches the locking hook. Pressing the push switch (7) causes the locking hook to disengage from the slot (209) to remove the top cover (201). A return spring is also provided between the movable positions (20) of the push switch (7).

10. A vacuum cleaner duct structure according to claim 9, characterized in that: The external air duct (3) includes an outer tube (301) installed on one side of the base (1) for connecting the brush head and an inner tube (302) disposed inside the base (1). One end of the inner tube (302) is connected to the outer tube (301), and the other end extends into the air inlet (102) for connecting the first air duct (202).

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