Cleaning mechanism for filter of suction device and suction device

Abstract

The utility model discloses a cleaning mechanism for a filter of a suction device, which comprises a lower base provided with a first cavity and connected with a first air guide channel enabling the first cavity to be communicated with a motor cavity of the suction device; the upper base is provided with a second cavity and is connected with a second air guide channel for communicating the second cavity with the motor cavity; the valve is provided with a lower end cover and an upper end cover, a first sealing element is arranged between the lower end cover and the lower base, and a second sealing element is arranged between the upper end cover and the upper base; an opening and closing element connected with the valve drives the valve to be switched between an opening station and a closing station; when a motor of the suction device works, the second cavity applies negative pressure for assisting in opening the valve to the upper end cover at a closing station; in the opening station, fluid flows from the first cavity to the filter for purging the filter.

Description

Technical Field

[0001] The utility model relates to a cleaning mechanism, in particular to a blowing mechanism for a suction device. Background Art

[0002] Suction devices are widely used in daily production and life. A suction motor disposed in the device generates negative pressure in the device, thereby sucking the suctioned objects outside the device into the dust collecting chamber in the housing of the suction device along with the airflow. Since the suction device often sucks a lot of dust during its operation, a filter is often required to be disposed beside the dust collecting chamber of the suction device.

[0003] After the suction device has been used for a certain period of time, a lot of dust tends to accumulate on the filter, causing the filter to become clogged. During the vacuuming process, the air performance will decrease due to the clogged filter. Therefore, a cleaning device or mechanism is required to clean the filter.

[0004] In order to save energy, whether the cleaning mechanism is put into the cleaning process is often controlled by a corresponding switch component. Therefore, it is desired to provide a cleaning mechanism that can be put into use more efficiently and labor-savingly. Utility Model Content

[0005] One of the purposes of the utility model is to provide a cleaning mechanism for a filter of a suction device, which can not only purge and clean the filter during the operation of the suction device, but also start the cleaning mechanism efficiently and labor-savingly, so that the cleaning mechanism can be put into use more efficiently and labor-savingly.

[0006] In order to achieve the above-mentioned object, the utility model proposes a cleaning mechanism for a filter of a suction device, which comprises:

[0007] A lower base, wherein a first cavity is disposed therein, and the lower base is connected to a first air guide channel that connects the first cavity to a motor cavity of a suction device;

[0008] An upper base, wherein a second cavity is disposed therein, and the upper base is connected to a second air guide passage that connects the second cavity to a motor cavity of the suction device;

[0009] A valve having a lower end cover and an upper end cover, wherein a first sealing element is disposed between the lower end cover and the lower base, and a second sealing element is disposed between the upper end cover and the upper base;

[0010] An opening and closing element, which is connected to the valve to drive the valve to switch between an open position and a closed position;

[0011] Wherein, in the closed position, the lower end cover is sealed against the lower base, and the upper end cover is sealed against the upper base; in the closed position, when the motor of the suction device is working, the second cavity applies negative pressure to the upper end cover to assist in opening the valve;

[0012] In the open position, a first opening is provided between the lower end cover and the lower base, and a second opening is provided between the upper end cover and the upper base. In the open position, when the motor of the suction device is working, the fluid flows from the first cavity to the filter to purge the filter.

[0013] Furthermore, in some embodiments of the present invention, at the open position, when the motor of the suction device is working, the fluid flows from the second cavity to the motor cavity via the second air guide channel.

[0014] Further, in some embodiments of the present invention, the positions of the upper base and the lower base are arranged so that: the fluid path between the second cavity of the upper base and the motor cavity is shorter than the fluid path between the first cavity of the lower base and the motor cavity.

[0015] Furthermore, in some embodiments of the present invention, the pressure-bearing area of ​​the upper end cover of the valve is smaller than the pressure-bearing area of ​​the lower end cover.

[0016] Further, in some embodiments of the present invention, the area of ​​the second sealing element is smaller than the area of ​​the first sealing element.

[0017] Furthermore, in some embodiments of the present invention, the opening and closing element includes an electromagnet.

[0018] Furthermore, in some embodiments of the present invention, the cleaning mechanism further includes a control element connected to the electromagnet.

[0019] Furthermore, in some embodiments of the present invention, the cleaning mechanism further comprises an elastic element, which applies an elastic force to the valve to make it tend toward a closed position.

[0020] Furthermore, in some embodiments of the present invention, the upper base is arranged above the valve via a column vertically established on the lower base.

[0021] Another object of the utility model is to provide a suction device which can realize a self-cleaning function with high efficiency and labor saving.

[0022] Based on the above purpose, the utility model also provides a suction device, which includes a shell, in which a dust collecting chamber, a motor chamber and a filter are provided. The dust collecting chamber is located on the dust collecting side of the filter, and the cleaning mechanism described above is provided in the accommodating space on the cleaning side opposite to the dust collecting side of the filter.

[0023] The cleaning mechanism described in the utility model adopts the above structure, so that the opening of the valve is faster and more labor-saving. When the cleaning mechanism needs to be put into use, the opening and closing element only needs a force far less than that of the conventional opening and closing element to switch the valve from the closing position to the opening position.

[0024] The suction device of the utility model can reduce energy consumption due to the adoption of the cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a suction device is shown.

[0026] Figure 2 A schematic diagram of the external structure of the cleaning mechanism of the utility model in one embodiment is shown.

[0027] Figure 3 A schematic diagram of the internal structure of the cleaning mechanism of the utility model in one embodiment is shown from a cross-sectional perspective.

[0028] Figure 4 A schematic diagram of the three-dimensional structure of the lower base in one embodiment of the present invention is shown.

[0029] Figure 5 The state of the valve in the cleaning mechanism of the utility model in the closed position is shown in a sectional view.

[0030] Figure 6 The state of the valve in the cleaning mechanism of the utility model in the open position is shown in a sectional view.

[0031] Figure 7 A schematic structural diagram of a valve in a cleaning mechanism according to the utility model in one embodiment is shown from a cross-sectional perspective.

[0032] Figure 8 The internal structure of the suction device described in the utility model in one embodiment is schematically shown. DETAILED DESCRIPTION

[0033] The cleaning mechanism and the suction device described in the utility model will be further explained and illustrated below in conjunction with the drawings and specific embodiments of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the utility model.

[0034] Figure 1A suction device 100 used in daily production and life is shown. The suction device 100 includes a housing 101, a dust collecting chamber 105 is provided in the housing 101, the dust collecting chamber 105 is connected to the air intake duct 103 through a port 102 on the housing 101, and a suction motor for suction is provided in a motor chamber 104. When the suction device 100 is working, the suction motor is started, thereby generating negative pressure in the housing, and then the sucked object is sucked into the dust collecting chamber 105 of the suction device along with the air flow. Since the suction device often sucks a lot of dust during its working process, a filter 106 is often required to be provided beside the dust collecting chamber 105 of the suction device.

[0035] After a period of use, the dust collecting side 1061 of the filter 106 tends to accumulate a lot of dust, which causes the filter to be blocked, thereby affecting the air performance and suction effect of the suction device. Therefore, a cleaning mechanism 1 disposed on the cleaning side 1062 opposite to the dust collecting side 1061 of the filter is used to clean the filter.

[0036] The utility model hopes to provide a cleaning mechanism which can be put into use more efficiently and labor-savingly.

[0037] In order to achieve the above-mentioned object, the utility model provides a cleaning mechanism for a filter of a suction device in one embodiment.

[0038] Figure 2 A schematic diagram of the external structure of the cleaning mechanism of the utility model in one embodiment is shown.

[0039] Figure 3 A schematic diagram of the internal structure of the cleaning mechanism of the utility model in one embodiment is shown.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment, the cleaning mechanism may include:

[0041] The lower base 11 has a first cavity 111 disposed therein, and the lower base is connected to a first air guide channel 13 which connects the first cavity 111 with the motor cavity of the suction device.

[0042] The upper base 12 has a second cavity 121 disposed therein, and the upper base 12 is connected to a second air guide channel 14 that allows the second cavity 121 to communicate with the motor cavity of the suction device.

[0043] Figure 4 A schematic diagram of the three-dimensional structure of the lower base in one embodiment of the present invention is shown from a bottom perspective.

[0044] like Figure 4As shown, in some more specific embodiments, the first cavity 111 of the lower base 11 is connected to the first air guide channel 13 provided beside the first cavity, so that the first cavity 111 can be connected to the motor cavity of the suction device through the first air guide channel 13. The top surface of the lower base is provided with a hollow opening portion 112, so that when the valve described below is opened, it can be connected to the external environment.

[0045] exist Figure 4 In the exemplary embodiment shown, two first air guiding channels 13 are provided, which are respectively arranged on the left and right sides of the first cavity.

[0046] It should be noted that in other embodiments, as long as the fluid communication between the first cavity and the motor cavity can be achieved, the specific structure and number of the first air guide passages are not limited to the examples described herein. Figure 2 , Figure 3 and Figure 4 In the example shown, the second air guide channel 14 passes through the first air guide channel 13 and communicates with the motor cavity. Although the second air guide channel 14 passes through the first air guide channel 13, it should be noted that this arrangement is to save space. Figure 4 As shown, the first air guiding channel 13 and the second air guiding channel 14 are not connected to each other, that is, the spaces of the two are independent of each other, but are respectively connected to the motor cavity fluid.

[0047] Continue reading Figure 2 and Figure 3 The cleaning mechanism further includes: a valve 15, which has a lower end cover 151 and an upper end cover 152, wherein a first sealing element 16 is provided between the lower end cover 151 and the lower base 11, and a second sealing element 17 is provided between the upper end cover 152 and the upper base 12. An opening and closing element 18 is connected to the valve 15 to drive the valve 15 to switch between an open position and a closed position.

[0048] like Figure 5 As shown, in the closed position of the valve 15, the lower end cover 151 is sealingly fitted to the top surface of the lower base 11 through a first sealing element 16, such as a first sealing ring, and the upper end cover 152, such as the lower surface of the upper end cover, is also sealingly fitted to the upper base 12 through a second sealing element 17, such as a second sealing ring.

[0049] like Figure 1 and Figure 5As shown, in the closed position of the valve, when the motor of the suction device 100 is working, the airflow is sucked from the outside into the housing 101, and at this time, there is a negative pressure in the motor cavity 104. At the same time, since the first cavity 111 is connected to the motor cavity 104 through the first air guide channel 13, a negative pressure is also established in the first cavity 111. This negative pressure will apply a downward pulling force F1 to the valve 15 to pull it down, and this force makes the valve 15 tend to remain in the closed position. Therefore, if the valve is to be opened, the opening and closing element 18 needs to apply an opening force F3 to the valve.

[0050] In the case where the technical solution of the present utility model is not adopted, in order to open the valve, the opening force F3 that the opening and closing element 18 needs to apply needs to be at least equal to F1.

[0051] The utility model adopts the above-mentioned structural setting, based on the second cavity 121 being connected to the motor cavity through the second air guide channel 14, when the motor is working, a negative pressure is also established in the second cavity 121, and the negative pressure will apply a lifting force F2 to the upper end cover 152 of the valve to pull the valve upward. Therefore, if the valve is to be opened, the opening force F3 applied by the opening and closing element 18 can be at least the difference between F1 and F2. As a result, the force for opening the valve is greatly saved, making the opening of the valve more labor-saving and efficient.

[0052] like Figure 6 As shown, in the open position of the valve, the lower end cover 151 leaves the surface of the lower base 11, such as the top surface of the lower base, thereby forming a first opening P1 between the lower base 11, which enables the first cavity 111 to achieve fluid conduction with the outside world through the first opening P1. Similarly, the upper end cover 152 also leaves the upper base, thereby forming a second opening P2 between the upper base 12, which enables the second cavity 121 to achieve fluid conduction with the outside world through the second opening P2. Since the cleaning structure is arranged in a accommodating space in the shell of the suction device, and the accommodating space can be connected to the external environment atmospheric pressure through the air holes on the shell, in the open position of the valve, the first cavity 111 and the second cavity 121 can both be connected to the external atmospheric pressure, so that the internal pressure is converted from a negative pressure state to a state close to atmospheric pressure. In this state, since the first cavity 111 of the cleaning side 1062 of the filter 106 is converted to positive pressure and the dust collecting cavity 105 of the dust collecting side 1061 of the filter 106 is at negative pressure, the fluid will flow from the first cavity 111 to the filter 106, thereby purging the filter.

[0053] In addition, from Figure 6It can also be seen that in this example, the first sealing element 16 is arranged on the lower end cover 151, and the second sealing element 17 is arranged on the upper end cover 152, so as the lower end cover 151 leaves the surface of the lower base 11, the first sealing element 16 also leaves the surface of the lower base 11. Similarly, as the upper end cover 152 leaves the upper base 12, the second sealing element 17 also leaves the upper base 12.

[0054] It should be noted that, in other embodiments, the first sealing element may also be disposed on the lower base, and the second sealing element may also be disposed on the upper base. Therefore, when the lower end cover leaves the surface of the lower base, the lower end cover also leaves the first sealing element, and when the upper end cover leaves the upper base, the upper end cover also leaves the second sealing element.

[0055] In some more specific embodiments, in the open position of the valve, when the motor of the suction device is working, the fluid flows from the second cavity 121 to the motor cavity via the second air guide channel 14 .

[0056] Of course, in other embodiments, the second cavity may also introduce the fluid from the second cavity 121 into the atmospheric environment through other fluid paths.

[0057] In addition, in some more preferred embodiments, the positional relationship between the upper base 12 and the lower base 11 can be set so that: the fluid path P1 between the second cavity 121 of the upper base 12 and the motor cavity is shorter than the fluid path P2 between the first cavity 111 of the lower base 11 and the motor cavity. The setting of the fluid paths P1 and P2 can be achieved through the specific paths of the first air guide channel 13 and the second air guide channel 14.

[0058] This arrangement makes the second cavity 121 closer to the motor cavity than the first cavity 111 in the fluid path. In this way, when the valve moves from the open position to the closed position, the vacuum in the second cavity 121 recovers faster. Therefore, if the valve is opened again in a short time, the opening force required to open the valve will be smaller than the opening force of the last time the valve was opened. This situation is particularly suitable for the case where the opening and closing element is set to intermittent operation to intermittently open the valve.

[0059] In some more preferred embodiments of the present invention, when the fluid path P1 between the second cavity 121 of the upper base 12 and the motor cavity is shorter than the fluid path P2 between the first cavity 111 of the lower base 11 and the motor cavity, as Figure 7 As shown, the pressure bearing area (ie, the area bearing the air pressure) of the upper end cover 152 of the valve can be further set to be smaller than the pressure bearing area (ie, the area bearing the air pressure) of the lower end cover 151.

[0060] This arrangement can make the valve structure more compact while ensuring that the opening and closing element opens the valve with a smaller force, and save more installation space within the effective accommodation space of the suction device.

[0061] Of course, in some other optional implementations, the pressure-bearing area of ​​the upper end cover may also be equal to the pressure-bearing area of ​​the lower end cover.

[0062] In some more specific embodiments, when Figure 7 As shown, when the first sealing element 16 and the second sealing element 17 are both arranged on the valve, the area of ​​the second sealing element 17 can be arranged to be smaller than the area of ​​the first sealing element 16. This arrangement is also intended to ensure that the opening and closing element opens the valve with a smaller force, making the valve structure more compact and saving arrangement space.

[0063] In some more specific embodiments of the present invention, the opening and closing element 18 may include an electromagnet.

[0064] In some other embodiments, the opening and closing element 18 may also be a permanent magnet.

[0065] Of course, in some other optional embodiments, the opening and closing element may also be a mechanical opening and closing structure, such as a lever handle.

[0066] In some embodiments, the cleaning mechanism may further include a control element connected to the opening and closing element 18 to control the opening and closing of the opening and closing element. For example, when the opening and closing element is configured to include at least an electromagnet, the control element may include an electric control element connected to the electromagnet, and the electric control element may control the electromagnet to apply or not apply electromagnetic force to the valve by controlling the conduction or disconnection of the current.

[0067] When the opening and closing element is configured to include at least a mechanical opening and closing structure, the control element may include a motor or a cylinder, a hydraulic cylinder or a similar power device.

[0068] By setting a control element, the valve can be further opened intermittently at set time intervals as required, or the opening of the valve can be controlled according to the dust accumulation degree information of the filter transmitted by the sensor on the filter.

[0069] In some embodiments of the present invention, Figure 3 and Figure 5 As shown, the cleaning mechanism can also include an elastic element 20, which can be arranged between the upper end cap 152 of the valve and the top inner surface of the upper base to apply an elastic force to the valve that makes it tend to the closed position. In a more specific example, the elastic element 20 can be a coil spring.

[0070] In this way, when the opening force of the opening and closing element is removed, the valve can be reset to the closed position under the elastic action of the elastic element 20.

[0071] Of course, in other optional embodiments, the elastic element may not be provided, and when the opening force of the opening and closing element is removed, the valve may gradually return to the closed position under the action of its own gravity.

[0072] In addition, in some more specific embodiments of the present invention, such as Figure 2 As shown, the upper base 12 can be arranged above the valve by means of a column 19 vertically arranged on the lower base 11. This arrangement can make the arrangement structure of the upper base more stable and also save the arrangement space.

[0073] It should also be noted that the utility model does not limit the number of components, and as long as the technical solution can be implemented, technicians in this field can set it as needed. For example, one or more of the lower base, upper base, sealing element, and opening and closing element can be set.

[0074] In another embodiment, the utility model further provides a suction device 100, which includes a shell 101, in which a dust collecting chamber 105, a motor chamber 104 provided with a suction motor, and a filter 106 are provided, wherein the dust collecting chamber is located on a dust collecting side 1061 of the filter 106, and a cleaning mechanism 1 as described above is provided in the accommodating space on a cleaning side 1062 opposite to the dust collecting side 1061 of the filter 106.

[0075] Since the arrangement and working state of the cleaning mechanism in the suction device 100 have been described in detail above, they will not be repeated here.

[0076] The cleaning mechanism described in the utility model adopts the above structure, so that the opening of the valve is faster and more labor-saving. When the cleaning mechanism needs to be put into use, the opening and closing element only needs a force far less than that of the conventional opening and closing element to switch the valve from the closing position to the opening position.

[0077] Accordingly, the suction device described in the utility model can reduce energy consumption due to the adoption of the above-mentioned cleaning mechanism.

[0078] It should be noted that the prior art part in the protection scope of the utility model is not limited to the embodiments given in the application documents. All prior art that does not contradict the scheme of the utility model, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the utility model.

[0079] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0080] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith are directly derived or easily associated with the contents disclosed by those skilled in the art from the present invention, and should all fall within the protection scope of the present invention.

Claims

1. A cleaning mechanism for a filter of a suction device, characterized in that: include: A lower base (11) having a first cavity (111) therein, the lower base being connected to a first air guide channel (13) for communicating the first cavity with a motor cavity of a suction device; An upper base (12) having a second cavity (121) therein, the upper base being connected to a second air guide channel (14) for communicating the second cavity with a motor cavity of a suction device; A valve (15) comprising a lower end cover (151) and an upper end cover (152), wherein a first sealing element (16) is provided between the lower end cover and the lower base, and a second sealing element (17) is provided between the upper end cover and the upper base; an opening and closing element (18), which is connected to the valve to drive the valve to switch between an open position and a closed position; wherein, in the closed position, the lower end cover (151) is sealed against the lower base (11), and the upper end cover (152) is sealed against the upper base (12); in the closed position, when the motor of the suction device is working, the second cavity (121) applies a negative pressure to the upper end cover (152) to assist in opening the valve; In the open position, a first opening (P1) is provided between the lower end cover and the lower base, and a second opening (P2) is provided between the upper end cover and the upper base; in the open position, when the motor of the suction device is working, the fluid flows from the first cavity (111) to the filter to purge the filter.

2. The cleaning mechanism according to claim 1, characterized in that: In the open position, when the motor of the suction device is working, the fluid flows from the second cavity (121) to the motor cavity via the second air guide channel (14).

3. The cleaning mechanism according to claim 1, characterized in that: The positions of the upper base (12) and the lower base (11) are arranged so that the fluid path between the second cavity (121) of the upper base and the motor cavity is shorter than the fluid path between the first cavity (111) of the lower base and the motor cavity.

4. The cleaning mechanism according to claim 3, characterized in that: The pressure bearing area of ​​the upper end cover (152) of the valve is smaller than the pressure bearing area of ​​the lower end cover (151).

5. The cleaning mechanism according to claim 4, characterized in that: The area of ​​the second sealing element (17) is smaller than the area of ​​the first sealing element (16).

6. The cleaning mechanism according to claim 1, characterized in that: The opening and closing element (18) comprises an electromagnet.

7. The cleaning mechanism according to claim 1, characterized in that: It also includes a control element, which is connected to the opening and closing element to control the opening and closing of the opening and closing element.

8. The cleaning mechanism according to claim 1, characterized in that: It also includes an elastic element (20) which applies an elastic force to the valve to make it tend to the closed position.

9. The cleaning mechanism according to claim 1, characterized in that: The upper base (12) is arranged above the valve via a column (19) vertically erected on the lower base (11).

10. A suction device (100), comprising a housing (101), wherein a dust collecting chamber (105), a motor chamber (104) and a filter (106) are arranged in the housing, wherein the dust collecting chamber (105) is located on a dust collecting side (1061) of the filter, and characterized in that: A cleaning mechanism (1) as described in any one of claims 1 to 9 is provided in the accommodating space on the cleaning side (1062) of the housing opposite to the dust collecting side of the filter.

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