Valve mechanism for cleaning filter of suction device and suction device

Abstract

The utility model discloses a valve mechanism for cleaning a filter of a suction device, which comprises a shell (1), a valve (2) and a valve (3), the shell (1) is internally provided with a cavity (11), and the cavity is used for being respectively communicated with a motor cavity of the suction device and the filter through fluid; the valve cover (2) is arranged on the shell in an openable mode, in the opening state of the valve cover, the cavity is in fluid communication with the external environment, and fluid flows to the filter from the cavity so as to be used for blowing and cleaning the filter of the suction device; an opening element (3) arranged to move when subjected to an opening external force; the magnetic force storage element (4) is arranged between the valve cover and the opening element; when an opening external force is applied to the opening element to enable the opening element to move on a first stroke, the movement on the first stroke enables the magnetic force storage element to store magnetic force when the valve cover is still kept in a closed state, and when the opening external force is continuously applied to the opening element to enable the opening element to continuously move on a second stroke. The valve cover is switched from the closed state to the open state, and the magnetic force storage element applies force for accelerating opening of the valve cover to the valve cover at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve mechanism, especially a valve mechanism for a suction device. BACKGROUND

[0002] Suction devices are widely used in daily production and life, which generate negative pressure in the device through the suction motor arranged in the device, so that the suction material outside the device is sucked into the dust collection cavity in the suction device shell along with the airflow. Because the working process of the suction device often sucks a large amount of dust, a filter is often arranged beside the dust collection cavity of the suction device.

[0003] After the suction device is used for a certain period of time, a lot of dust will accumulate on the filter, which will cause the filter to be blocked. During the dust collection process, the air performance will decrease due to the filter blockage. Therefore, a cleaning device or mechanism is needed to clean the filter.

[0004] In order to save energy consumption, whether the cleaning mechanism is put into the cleaning process is often controlled by the corresponding manual valve mechanism, but the opening efficiency of the existing manual valve mechanism is low. SUMMARY

[0005] One of the purposes of the utility model is to provide a valve mechanism for cleaning the filter of a suction device, which can efficiently and quickly switch from the closed state to the open state, so as to quickly and efficiently start the cleaning of the filter.

[0006] In order to achieve the above purpose, the utility model provides a valve mechanism for cleaning the filter of a suction device, which comprises:

[0007] A shell is provided with a cavity, and the cavity is used for fluid communication with the motor cavity and the filter of the suction device respectively;

[0008] A valve cover is arranged on the shell in an openable manner, wherein in the open state of the valve cover, the cavity is in fluid communication with the external environment, and the fluid flows from the cavity to the filter, so as to blow and clean the filter of the suction device;

[0009] An opening element is arranged to move when subjected to an opening external force;

[0010] A magnetic force storage element is arranged between the valve cover and the opening element;

[0011] When an opening external force is applied to the opening element to move the opening element on a first stroke, the movement on the first stroke causes the magnetic force storage element to store magnetic force while the valve cover remains in the closed state, and when the opening external force continues to be applied to the opening element to continue moving the opening element on a second stroke, the valve cover switches from the closed state to the open state, and the magnetic force storage element simultaneously applies force to the valve cover for accelerating the opening of the valve cover.

[0012] Further, in the valve mechanism, the magnetic force storage element comprises a first magnetic sheet and a second magnetic sheet with the same polarity, wherein the first magnetic sheet is connected with the opening element, and the second magnetic sheet is connected with the valve cover.

[0013] Further, in the valve mechanism, the valve cover is rotatably arranged relative to the shell through a valve cover rotating shaft, one end of the valve cover is connected with the magnetic force storage element, and the other end of the valve cover is opened or closed relative to the shell.

[0014] Further, in the valve mechanism, the opening element is arranged to move linearly on the first stroke and / or the second stroke.

[0015] Further, in the valve mechanism, the opening element comprises a button, and the button is movably arranged in a fixedly arranged mounting groove.

[0016] Further, in the valve mechanism, the opening element is arranged to move along a curve on the first stroke and / or the second stroke.

[0017] Further, in the valve mechanism, a first reset element is arranged between the valve cover and the shell, and the first reset element applies a reset elastic force to the valve cover to switch the valve cover from the open state to the closed state.

[0018] Further, in the valve mechanism, the first reset element comprises a spiral spring.

[0019] Further, the valve mechanism further comprises a locking element arranged in association with the valve cover, and the locking element has a locking station and an unlocking station, wherein in the locking station, the locking element locks the valve cover to prevent the opening of the valve cover; when the opening external force continues to be applied to the opening element, the movement of the opening element drives the locking element to switch to the unlocking station which is disengaged from the valve cover.

[0020] Further, the valve mechanism has the second reset element arranged between the housing and the locking element, and the second reset element applies a reset elastic force to the locking element, so that the locking element is switched from the unlocking position to the locking position.

[0021] Further, the valve mechanism has the second reset element arranged between the housing and the locking element, and the second reset element applies a reset elastic force to the locking element, so that the locking element is switched from the unlocking position to the locking position.

[0022] Further, the valve mechanism has the second reset element arranged between the housing and the locking element, and the second reset element applies a reset elastic force to the locking element, so that the locking element is switched from the unlocking position to the locking position.

[0023] Another purpose of the utility model is to provide a suction device which can realize efficient and labor-saving self-cleaning function.

[0024] Based on the above purpose, the utility model also provides a suction device which comprises a shell, the shell is internally provided with a dust collecting cavity, a motor cavity and a filter, wherein the dust collecting cavity is located at the dust collecting side of the filter, and the accommodating space of the clean side of the filter in the shell is provided with the valve mechanism as described above.

[0025] The valve mechanism can make the valve open more quickly, and when the filter needs to be cleaned, the valve cover can be switched from the closing position to the opening position at a faster speed, thereby greatly improving the work efficiency.

[0026] The valve mechanism has simple structure, low cost and compatibility with current cleaning structure.

[0027] The suction device can reduce energy consumption and improve use experience. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure schematic view of a suction device is shown.

[0029] Figure 2 An external structure schematic view of the valve mechanism in one embodiment is shown.

[0030] Figure 3 A structure schematic view of the valve mechanism in one embodiment is shown from the perspective of a cross section.

[0031] Figure 4 A schematic view of the valve cover in the closed state is shown from the perspective of a cross-section of the valve mechanism in one embodiment.

[0032] Figure 5 A schematic view of the valve cover in the open state is shown from the perspective of a cross-section of the valve mechanism in one embodiment.

[0033] Figure 6 An opening element of the valve mechanism in another embodiment is shown. DETAILED DESCRIPTION

[0034] The valve mechanism and the suction device of the present application will be further explained and described below in conjunction with the accompanying drawings and specific embodiments, however, the explanation and description shall not constitute undue limitation on the technical solution of the present application.

[0035] Figure 1 A suction device 100 used in daily production and life is shown. The suction device 100 comprises a housing 101, a dust collecting cavity 105 is arranged in the housing 101, the dust collecting cavity 105 is in communication with an air inlet duct 103 through a port 102 on the housing 101, and a suction motor for realizing suction is arranged in a motor cavity 104.

[0036] When the suction device 100 works, the suction motor is started, thereby generating a negative pressure in the housing, and then the suction material is sucked into the dust collecting cavity 105 of the suction device along with the airflow. Since a large amount of dust is often sucked in during the working process of the suction device, a filter 106 is often arranged beside the dust collecting cavity 105 of the suction device.

[0037] After a period of use, a dust collecting side 1061 of the filter 106 often accumulates a lot of dust, thereby causing the filter to be blocked, and further affecting the air performance and suction effect of the suction device. Therefore, a mechanism, such as a valve mechanism 200 arranged on a clean side 1062 opposite to the dust collecting side 1061 of the filter, is used to clean the filter 106.

[0038] The present application expects to provide a valve mechanism which can be quickly opened when the filter needs to be cleaned, thereby quickly put into use.

[0039] In order to achieve the above-mentioned purpose, the present application proposes a valve mechanism for cleaning a filter of a suction device in one embodiment.

[0040] Figure 2 An external structure schematic view of the valve mechanism in one embodiment is shown.

[0041] Figure 3 The structure schematic diagram of the valve mechanism in an embodiment is shown from the perspective of a section view.

[0042] As shown in Figure 2 and Figure 3 , in an embodiment, the valve mechanism can include: a housing 1 having a cavity 11 inside, the cavity 11 of the housing 1 is used to be in fluid communication with the motor cavity and the filter of the suction device respectively. A valve cover 2 is arranged on the housing 1 in an openable manner, wherein in the open state of the valve cover, the cavity is in fluid communication with the external environment, and the fluid flows from the cavity 11 to the filter 106 as shown in Figure 1 , so that the filter can be purged and cleaned. An opening element 3 is moved when subjected to an opening external force, for triggering the opening of the valve cover. In addition, the valve mechanism further includes a magnetic force storage element 4 arranged between the valve cover 2 and the opening element 3.

[0043] Figure 4 The schematic diagram of the valve cover in the closed state in an embodiment of the valve mechanism of the utility model is shown from the perspective of a section view.

[0044] In combination Figure 1 and Figure 4 , in the working state of the suction device, i.e. in the case that the motor of the suction device is started, a negative pressure will be established in the dust collection cavity 105, and then the suction object will be sucked into the dust collection cavity 105 of the suction device along with the airflow. As shown in Figure 4 , when the filter 106 is not cleaned and purged, the valve cover 2 is in the closed state, i.e. the external environment Q is not in communication with the cavity 11 of the housing 1, at this time the cavity 11 is in negative pressure, and the external environment is basically atmospheric pressure, therefore the negative pressure F1 generated by the pressure difference between the external environment and the cavity 11 will exert a pressure on the valve cover 2, so that it remains in the closed state. At this time, the airflow in the suction device passes through the filter 106 from the dust collection cavity 105 into the cavity 11, and then enters the motor cavity 104, in this process, the dust sucked into the suction device will be accumulated on the dust collection side 1061 of the filter 106.

[0045] When it is necessary to purge and clean the filter 106, an opening external force F is applied to the opening element 3, so that the opening element 3 is moved in the first stroke, for example, is moved by a first distance in the height direction as shown in Figure 4 and Figure 5 , at this time, since the valve cover 2 is subjected to the negative pressure F1 as described above, it still remains in the closed state, but the movement in the first stroke will make the magnetic force storage element store magnetic force.

[0046] Figure 5The valve mechanism shows the schematic diagram of the valve cover in the open state in one embodiment under the perspective of the section view.

[0047] As Figure 4 and Figure 5 shown, the opening element 3 continues to be applied with the opening external force F, so as to make the opening element 3 continue to move on the second stroke, for example, continue to move a second distance in the height direction as shown in Figure 4 and Figure 5 , with the gradual movement of the opening element 3 on the second stroke, the magnetic force F2 stored by the magnetic force storage element 4 is larger and larger, when the magnetic force F2 exceeds the negative pressure F1 for keeping the valve cover 2 in the closed state, the valve cover 2 will switch from the closed state as shown in Figure 4 to the open state as shown in Figure 5 , in this state, the cavity 11 in the shell 1 will be in fluid communication with the external environment Q, so as to make the airflow from the external environment Q into the cavity 11 and from the cavity 11 to the filter 106, thereby cleaning and purging the filter 106.

[0048] In the process of opening the valve mechanism, the negative pressure F1 rapidly decreases, and at the same time, due to the force storage effect of the magnetic force storage element 4, the accumulated magnetic force will accelerate the opening of the valve cover 2, so that the valve mechanism opens at a faster speed.

[0049] As Figure 3 , Figure 4 and Figure 5 shown, in some more specific embodiments, the magnetic force storage element 4 can include the first magnetic sheet 41 and the second magnetic sheet 42 with the same polarity, wherein the first magnetic sheet is associated with the opening element 3, for example, directly arranged at the lower end of the opening element 3, and the second magnetic sheet 42 is associated with the valve cover, for example, directly arranged at the tail end of the valve cover. The first magnetic sheet 41 and the second magnetic sheet 42 with the same polarity store the magnetic force in the process of the valve cover not being actuated based on the principle of same-level mutual repulsion when the first magnetic sheet 41 approaches the second magnetic sheet 42 with the movement of the opening element.

[0050] In other more specific embodiments, the magnetic force storage element can also adopt an electromagnet, but the structure is more complex than the above-mentioned first magnetic sheet 41 and second magnetic sheet 42 with the same polarity.

[0051] As Figure 2 and Figure 3 shown, in some more specific embodiments, the valve cover 2 is rotatably arranged relative to the shell 1 through the valve cover shaft 21, with the rotation of the valve cover 2 around the shaft center of the valve cover shaft 21, the valve cover 2 switches between the open state and the closed state, the tail end of the valve cover 2 is associated with the magnetic force storage element 4, and the head end of the valve cover 2 opens or closes relative to the shell 1.

[0052] In some more specific embodiments, as shown in Figure 2 and Figure 3 the valve cover rotating shaft 21 is integrally formed with the valve cover 2, and the housing 1 is provided with a pair of lugs 12, the lugs 12 are provided with lug holes 121, and the valve cover rotating shaft 21 is rotatably arranged in the lug holes 121, thereby realizing the rotatable connection between the valve cover 2 and the housing 1. Of course, in other more specific embodiments, the valve cover rotating shaft can also be an independent component independent of the valve cover.

[0053] In some more specific embodiments, as shown in Figure 4 and Figure 5 the second magnetic sheet 42 can be fixedly placed in the groove at the tail end of the valve cover 2.

[0054] As shown in Figure 4 and Figure 5 in some specific embodiments, the opening element 3 can be arranged to move linearly on the first stroke and / or the second stroke, thereby triggering the opening of the valve cover.

[0055] More specifically, the opening element 3 can include a button, which is movably arranged in a fixedly arranged mounting groove (not shown in the figure) of the suction device, the mounting groove extends in the height direction, so that the button can move linearly in the height direction.

[0056] In some other specific embodiments, the action of the opening element triggering the opening of the valve cover can also be non-linear, for example, as shown in Figure 6 the opening element 3 can be arranged to rotate around the rotating shaft 31 to move in a non-linear curve, thereby making the first magnetic sheet (hidden and cannot be shown in the figure) arranged on the opening element move in a curve, thereby approaching the second magnetic sheet 42, and also realizing the force storage effect.

[0057] It should be noted that the opening element can be directly manually operated, or can be connected with other control elements such as magnetic control, electric control, hydraulic control element, thereby realizing automatic control.

[0058] By arranging the control element, the valve cover can be further intermittently opened according to the set time interval as needed, 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.

[0059] As shown in Figure 2 and Figure 3 in some embodiments, a first reset element 5 can also be arranged between the valve cover 2 and the housing 1, the first reset element 5 applies a reset elastic force to the valve cover 2, and when the external force applied to the opening element 3 is removed, the reset elastic force can make the valve cover 2 switch from the open state to the closed state.

[0060] In some more specific embodiments, the first reset element 5 can comprise a coil spring. In some other more specific embodiments, the first reset element can also be a reed, an elastic belt or other similar elastic element.

[0061] In order to further improve the upper limit of the magnetic force storage element, in some embodiments, the valve mechanism can further comprise a locking element 6 associated with the valve cover 2. The locking element 6 has a locking position and an unlocking position, wherein, as shown in Figure 4 , in the locking position, the locking element 6 locks the valve cover to prevent the opening of the valve cover 2; when the opening external force F is continuously applied to the opening element 3, the movement of the opening element 3 drives the locking element 6 to switch to the unlocking position away from the valve cover 2, for example, as shown in Figure 5 .

[0062] In some more specific embodiments, the valve cover is provided with a locking groove 22, as shown in Figure 3 , the locking element 6 is rotatably arranged through the locking element rotating shaft 62 to switch between the locking position and the unlocking position. Among them, as shown in Figure 4 , in the locking position, the locking end 63 of the locking element 6 is clamped in the locking groove 22 of the valve cover 2, thereby achieving the locking of the valve cover 2. As shown in Figure 4 and Figure 5 , when the opening external force F continues to be applied to the opening element 3, the movement of the opening element 3 will press the trigger end 64 of the locking element 6, so that the locking element 6 rotates around the locking element rotating shaft 62, so that the locking end 63 is out of the locking groove 22 of the valve cover 2, to switch to the unlocking position.

[0063] In some more specific embodiments, as shown in Figure 3 , a second reset element 61 can also be arranged between the housing 1 and the locking element 6, which applies a reset elastic force to the locking element 6, so that in the case that the opening external force is removed, the valve cover 2 is reset, and the locking element 6 can also switch from the unlocking position to the locking position.

[0064] In some more specific embodiments, the second reset element 61 can comprise a torsion spring.

[0065] Of course, in some other more specific embodiments, the second reset element for the locking element can not be arranged, and the center of gravity of the locking element can be designed to reset the locking element by gravity.

[0066] In this way, as described above, in the working state of the suction device, the motor of the suction device is started, and a negative pressure is established in the dust collecting cavity 105, and then the suction material is sucked into the dust collecting cavity 105 of the suction device along with the airflow. AsFigure 4 As shown, when the filter 106 is not cleaned or purged, the valve cover 2 is in the closed state, meaning the external environment Q is not connected to the cavity 11 of the housing 1. At this time, the cavity 11 is under negative pressure, while the external environment is essentially atmospheric pressure. Therefore, the negative pressure F1 exerts a force on the valve cover 2, causing it to tend to close. In addition, the locking force Fs provided by the locking member 6 in the locking position also prevents the valve cover 2 from opening.

[0067] like Figure 5 As shown, when the filter 106 needs to be purged and cleaned, an opening force F is applied to the opening element 3. The opening element 3 will first move during the first stroke. During the first stroke, before the locking element 6 is triggered to unlock, the magnetic storage element gradually stores force. At this time, the valve cover 2 is kept in the closed state by the negative pressure F1 (which those skilled in the art will understand is strictly speaking the torque of the negative pressure F1 acting on the valve cover) and the locking force Fs provided by the locking element 6 (which those skilled in the art will understand is strictly speaking the torque of the locking force Fs acting on the valve cover). The opening element continues to move on the second stroke. Since a locking element 6 is provided in this embodiment, the valve cover will not be opened even after the magnetic storage element 4 stores power to a level exceeding the negative pressure F1. That is, the locking element increases the upper limit of the storage power of the magnetic storage element until the opening element 3 presses the trigger end of the locking element 6 to trigger the locking element 6 to unlock, and the locking force Fs is removed. At this time, the magnetic storage force Fc1 (which those skilled in the art can understand is strictly speaking the torque of the magnetic storage force acting on the valve cover) is much greater than the negative pressure F1, and the valve cover 2 will open more quickly.

[0068] In another embodiment of the present invention, a suction device 100 is provided, which includes a housing 101, a dust collection chamber 105, a motor chamber 104 with a suction motor, and a filter 106. The dust collection chamber is located on the dust collection side 1061 of the filter 106, and a valve mechanism 200 as described above is provided in the accommodating space of the cleaning side 1062 opposite to the dust collection side 1061 of the filter 106.

[0069] Since the valve mechanism's installation and operation within the suction device 100 have already been described in detail above, they will not be repeated here.

[0070] The valve mechanism described in this utility model, by adopting the above structure, makes the valve opening faster and allows for quick and efficient switching of the valve cover from the closed position to the open position when the filter needs to be cleaned.

[0071] Furthermore, in some embodiments of this utility model, the upper limit of the magnetic energy storage element can be further increased by setting a locking component, thereby further improving the implementation effect.

[0072] Correspondingly, the suction device can greatly provide work efficiency, reduce energy consumption and improve use experience due to the adoption of the valve mechanism.

[0073] It should be noted that the prior art part in the protection scope of the present application is not limited to the embodiments given in the present application document, all prior art not contradictory to the scheme of the present application, including but not limited to prior patent documents, prior published publications, prior public use, etc., can be included in the protection scope of the present application.

[0074] In addition, the combination manner of each technical feature in the present application is not limited to the combination manner recorded in the claims of the present application or the combination manner recorded in the specific embodiments, all technical features recorded in the present application can be freely combined or integrated in any manner, unless contradictory to each other.

[0075] It should also be noted that the above-mentioned embodiments are only specific embodiments of the present application. Obviously, the present application is not limited to the above embodiments, and similar changes or modifications that can be directly derived or easily conceived by those skilled in the art from the disclosure of the present application should belong to the protection scope of the present application.

Claims

1. A valve mechanism for cleaning a filter of a suction device, characterized in that The application relates to a valve cover for a suction device, comprising: a housing (1) provided with a cavity (11) for fluid communication with a motor cavity and a filter of the suction device respectively; a valve cover (2) provided on the housing in an openable manner, wherein in an open state of the valve cover, the cavity is in fluid communication with an external environment, and fluid flows from the cavity to the filter for purging and cleaning the filter of the suction device; an opening element (3) arranged to move when subjected to an opening external force; a magnetic force storage element (4) arranged between the valve cover and the opening element; wherein when the opening external force is applied to the opening element to move the opening element on a first stroke, the movement on the first stroke causes the magnetic force storage element to store a magnetic force while the valve cover remains in a closed state, and when the opening external force continues to be applied to the opening element to move the opening element on a second stroke, the valve cover is switched from the closed state to the open state, and the magnetic force storage element simultaneously applies a force to the valve cover for accelerating the opening of the valve cover.

2. The valve train of claim 1 wherein, The magnetic force storage element comprises first and second magnetic sheets (41, 42) with the same polarity, wherein the first magnetic sheet is connected with the opening element in an associated manner, and the second magnetic sheet is connected with the valve cover in an associated manner.

3. The valve train of claim 1 wherein, The valve cover is rotatably arranged relative to the housing through a valve cover rotating shaft (21), one end of the valve cover is connected with the magnetic force storage element in an associated manner, and the other end of the valve cover is opened or closed relative to the housing.

4. The valve train of claim 1 wherein, The opening element is arranged to move linearly on the first stroke and / or the second stroke.

5. The valve train of claim 4 wherein, The opening element comprises a button movably arranged in a fixedly arranged mounting groove.

6. The valve train of claim 1 wherein, The opening element is arranged to move along a curve on the first stroke and / or the second stroke.

7. The valve train of claim 1 wherein, A first reset element (5) is arranged between the valve cover and the housing, and applies a reset elastic force to the valve cover to switch the valve cover from the open state to the closed state.

8. The valve train of claim 7 wherein, The first reset element comprises a spiral spring.

9. The valve train of any one of claims 1 to 8, wherein Further comprising: a locking piece (6) arranged in an associated manner with the valve cover, the locking piece has a locking position and an unlocking position, wherein in the locking position, the locking piece locks the valve cover to prevent the opening of the valve cover; when the opening external force continues to be applied to the opening element, the movement of the opening element drives the locking piece to switch to the unlocking position away from the valve cover.

10. The valve train of claim 9 wherein, The valve cover is provided with a locking groove (22), and the locking piece is rotatably arranged through a locking piece rotating shaft (62) to switch between the locking position and the unlocking position, wherein in the locking position, a locking end (63) of the locking piece is clamped in the locking groove, and when the opening external force continues to be applied to the opening element, the movement of the opening element presses a trigger end (64) of the locking piece to rotate the locking piece around the locking piece rotating shaft, so that the locking end of the locking piece is out of the locking groove to switch to the unlocking position.

11. The valve train of claim 9 wherein, A second reset element (61) is arranged between the housing and the locking piece, and applies a reset elastic force to the locking piece to switch the locking piece from the unlocking position to the locking position.

12. The valve train of claim 11 wherein, The second reset element comprises a torsional spring.

13. A suction device comprising a housing (101) in which a dust collection chamber (105), a motor chamber (104) and a filter (106) are arranged, wherein the dust collection chamber (105) is located on the dust collection side (1061) of the filter, characterized in that, The valve mechanism (200) as claimed in any one of claims 1-12 is provided in the housing in a receiving space of a clean side (1062) of the filter opposite to a dust collecting side of the filter.

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