Device for back flushing filter element through control valve

Abstract

The invention discloses a device for back flushing a filter element through a control valve, which comprises a fan, a plurality of pipelines, a plurality of valves, a filter chamber and a silencing air outlet pipe, the fan is fixedly connected with the plurality of pipelines, the plurality of valves are connected with the plurality of pipelines, the filter chamber is arranged at the lower left ends of the plurality of pipelines and is fixedly connected with the plurality of pipelines, and the silencing air outlet pipe is arranged at the lower left end of the plurality of pipelines. The noise reduction air outlet pipe is connected with the pipelines through the valves, when the draught fan works, air enters from the dust suction opening under the suction effect of the draught fan, passes through the interior of the filter chamber and flows to the pipelines, and under the effect that the valves control the air flow direction, the air flows to the noise reduction air outlet pipe, and then the air flows to the noise reduction air outlet pipe. And the air flows back to the plurality of pipelines under the action that the plurality of valves control the flow direction of the air, and finally returns to the filter chamber to realize back flushing on the upper filter element or the lower filter element in the filter chamber, so that the filter element cleaning is realized, and the problem that in the background technology, the existing dust collector is difficult to clean in the use process is solved. As the filter element is blocked, the dust collector needs to be frequently closed to take out the filter element for manual cleaning, the working efficiency is low, and the operation burden of a user is increased.

Description

Technical Field

[0001] The invention relates to a device for back-blowing a filter element through a control valve, and in particular to a device for back-blowing a filter element through a control valve used in a vacuum cleaner. Background Art

[0002] The filter element of a traditional vacuum cleaner will gradually become clogged during long-term use, affecting the vacuuming effect and performance of the vacuum cleaner. In order to keep the vacuum cleaner in normal working condition, the user needs to frequently turn off the vacuum cleaner and manually remove the filter element for cleaning, which not only increases the user's workload, but also affects the continuous working time and work efficiency of the vacuum cleaner. Summary of the invention

[0003] The present invention aims to provide a device for back-blowing a filter element by controlling a valve. By adjusting the opening and closing state of the valve in the pipeline, the gas flow direction is controlled so that the gas back-blows the filter element, thereby cleaning the filter element. This solves the problem that during use of the existing vacuum cleaner in the background technology, the vacuum cleaner needs to be frequently shut down for manual cleaning due to blockage of the filter element, resulting in low work efficiency and increased operating burden on users.

[0004] The technical solution of the present invention is: a device for back-blowing a filter element by controlling a valve, comprising a fan, multiple pipes, multiple valves, a filter chamber and a silencer outlet duct; the fan comprises an air inlet and an air outlet; the fan is fixedly connected to the multiple pipes, and the multiple pipes are fixedly connected through the multiple valves; the multiple pipes comprise a first pipe, a second pipe, a third pipe, a fourth pipe and a fifth pipe; the multiple valves comprise a first valve, a second valve, a third valve, a fourth valve and a fifth valve; the filter chamber is placed at the lower left end of the multiple pipes and is fixedly connected to the multiple pipes; the filter chamber comprises a dust suction port, an upper filter element and a lower filter element.

[0005] Optionally, the air inlet is located on the left side of the fan, and the air outlet is located on the right side of the fan.

[0006] Optionally, the first pipe is U-shaped and opens downward, and its left end passes through the upper filter element and the lower filter element and is connected to the filter chamber, and its right end is a three-way pipe, which is connected to the fourth pipe and the fifth pipe through the multiple valves; the second pipe is U-shaped and opens downward, and is located below the first pipe, and its left end is directly connected to the upper filter element, and its right end is connected to the fourth pipe through the valve; the third pipe is L-shaped, and its two ends are respectively connected to the second pipe and the fifth pipe through the valve; the fourth pipe is located below the second pipe and is a three-way pipe, two openings of which are connected to the first pipe and the second pipe through the valve, and the other end opening is connected to the air inlet; the fifth pipe is located below the silencer air outlet, and is an upper and lower three-way pipe, three openings of which are respectively connected to the first pipe, the third pipe, and the silencer air outlet pipe through the multiple valves, and another end opening is connected to the air outlet.

[0007] Optionally, the first valve is located between the second pipe and the fourth pipe, connecting the second pipe and the fourth pipe; the second valve is located between the fourth pipe and the first pipe, connecting the fourth pipe and the first pipe; the third valve is located between the first pipe and the fifth pipe, connecting the first pipe and the fifth pipe; the fourth valve is located between the silencer air outlet pipe and the fifth pipe, connecting the silencer air outlet pipe and the fifth pipe; the fifth valve is located between the third pipe and the fifth pipe, connecting the third pipe and the fifth pipe.

[0008] Optionally, the first valve, the second valve, the third valve, the fourth valve and the fifth valve all include a valve body, a valve plate, a pull rod and a pressure actuator; the valve body is a hollow tubular object connected to the outside of the pipeline; there are two pull rods in an "L" shape, one passes through the valve body and the other passes through the pressure actuator; the valve plate is a disc-shaped object, which is fixed to the inside of the valve body through the pull rod.

[0009] Optionally, the valve plate is movably connected to the pull rod and can rotate around the pull rod.

[0010] Optionally, the filter chamber is a hollow cube; and the dust suction port is a tubular protrusion on the left side of the outside of the filter chamber.

[0011] Optionally, the upper filter element includes an upper filter screen, and the lower filter element includes a lower filter screen; the upper filter element and the lower filter element are both hollow cylinders, the outer peripheral surface of the upper filter element is the upper filter screen, and the outer peripheral surface of the lower filter element is the lower filter screen.

[0012] Optionally, the lower filter element is located below the upper filter element.

[0013] Optionally, the third pipeline and the fourth pipeline have no connection relationship and are two independent pipelines.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a device for back-blowing a filter element by controlling a valve. When the fan is working, the opening and closing states of multiple valves are adjusted to control the gas flow direction, so that the filter element re-sucks gas and flows back to the filter chamber after dust filtering garbage, and back-blows the upper filter element or the lower filter element inside the filter chamber, thereby cleaning the filter element. This solves the problem that during use of the existing vacuum cleaner in the background technology, the vacuum cleaner needs to be frequently shut down to take out the filter element for manual cleaning due to blockage of the filter element, resulting in low work efficiency and increased user operation burden. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 (1) is an enlarged schematic diagram of the valve closed state;

[0018] Figure 2 (2) is an enlarged schematic diagram of the valve opening state;

[0019] Figure 3 It is a schematic diagram of the state of the present invention when vacuuming;

[0020] Figure 4 This is a schematic diagram of the state of the filter element when back-blowing;

[0021] Figure 5 It is a schematic diagram of the state of the filter element when back-blowing.

[0022] Among them: 1-fan; 11-air inlet; 12-air outlet; 2-multiple pipes; 21-first pipe; 22-second pipe; 23-third pipe; 24-fourth pipe; 25-fifth pipe; 3-multiple valves; 31-first valve; 311-valve plate; 312-valve body; 313-pull rod; 314-pressure actuator; 32-second valve; 33-third valve; 34-fourth valve; 35-fifth valve; 4-filter chamber; 41-dust suction port; 42-upper filter element; 421-upper filter screen; 43-lower filter element; 431-lower filter screen; 5-silencer outlet duct. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1, a device for back-blowing a filter element by controlling a valve, comprising a fan 1, a plurality of pipes 2, a plurality of valves 3, a filter chamber 4 and a silencer air outlet pipe 5;

[0025] The fan 1 is fixedly connected to the multiple pipes 2, the multiple pipes 2 are fixedly connected to each other through the multiple valves 3, the filter chamber 4 is placed at the lower left end of the two pipes 2 and is fixedly connected to the two pipes 2, and the silencer outlet pipe 5 is connected to the pipe 2 through the valve 3;

[0026] The fan 1 includes an air inlet 11 and an air outlet 12;

[0027] The plurality of pipelines 2 include a first pipeline 21, a second pipeline 22, a third pipeline 23, a fourth pipeline 24 and a fifth pipeline 25;

[0028] The plurality of valves 3 include a first valve 31, a second valve 32, a third valve 33, a fourth valve 34 and a fifth valve 35;

[0029] The filter chamber 4 includes a dust suction port 41, an upper filter element 42 and a lower filter element 43;

[0030] The upper filter element 42 includes an upper filter screen 421 , and the lower filter element 43 includes a lower filter screen 431 ;

[0031] The silencer air outlet pipe 5 is connected to the fifth pipe 25 through the fourth valve 34;

[0032] The air inlet 11 is located on the left side of the fan 1, and the air outlet 12 is located on the right side of the fan 1. The fan 1 inhales air from the air inlet 11 and discharges air from the air outlet 12.

[0033] The first pipe 21 is U-shaped and opens downward. Its left end passes through the upper filter element 42 and extends into the lower filter element 43, and is fixedly connected to the filter chamber 4. Its right end is a three-way pipe with three openings, namely, an upward opening, a left opening, and a right opening. The left opening of the right end of the first pipe 21 is fixedly connected to one end of the second valve 32, and the right opening of the right end of the first pipe 21 is fixedly connected to one end of the third valve 33.

[0034] The second pipe 22 is U-shaped, opens downward, and is located below the first pipe 21. Its left end extends into the upper filter element 42 and is fixedly connected thereto, and its right end is fixedly connected to one end of the first valve 31.

[0035] The third pipe 23 is L-shaped, with its upper end communicating with the second pipe 22 and its lower end fixedly connected to one end of the fifth valve 35;

[0036] The fourth pipe 24 is located at the lower end of the first valve 31. The fourth pipe 24 is a three-way pipe with three openings, namely, an upward opening, a downward opening, and a rightward opening. The upward opening of the fourth pipe 24 is fixedly connected to the other end of the first valve 31, the rightward opening of the fourth pipe 24 is fixedly connected to the other end of the second valve 32, and the downward opening of the fourth pipe 24 is fixedly connected to the air inlet 11;

[0037] The fifth pipe 25 is located below the silencer outlet pipe 5. The upper end of the fifth pipe 25 is a three-way pipe with three openings, namely, an upward opening, a leftward opening, and a downward opening. The upward opening of the upper end of the fifth pipe 25 is fixedly connected to one end of the fourth valve 34, and the leftward opening of the upper end of the fifth pipe 25 is fixedly connected to the other end of the third valve 33. The lower end of the fifth pipe 25 is also a three-way pipe, which is respectively opened upward, opened leftward, and opened downward. The upward opening of the lower end of the fifth pipe 25 and the downward opening of the upper end of the fifth pipe 25 are through pipes. The leftward opening of the lower end of the fifth pipe 25 is fixedly connected to the other end of the fifth valve 35, and the downward opening of the lower end of the fifth pipe 25 is fixedly connected to the air outlet 12.

[0038] The first valve 31 is located between the right end of the second pipe 22 and the upward opening of the upper end of the fourth pipe 24, connecting the second pipe 22 and the fourth pipe 24;

[0039] The second valve 32 is located between the rightward opening of the upper end of the fourth pipeline 24 and the leftward opening of the right end of the first pipeline 21, connecting the fourth pipeline 24 and the first pipeline 21;

[0040] The third valve 33 is located between the right end opening of the first pipe 21 and the left end opening of the upper end of the fifth pipe 25, connecting the first pipe 21 and the fifth pipe 25;

[0041] The fourth valve 34 is located between the silencer air outlet pipe 5 and the upward opening of the upper end of the fifth pipe 25, connecting the silencer air outlet pipe 5 and the fifth pipe 25;

[0042] The fifth valve 35 is located between the lower end of the third pipe 23 and the left opening of the lower end of the fifth pipe 25, connecting the third pipe 23 and the fifth pipe 25;

[0043] The filter chamber 4 is square in shape, and contains the upper filter element 42 and the lower filter element 43; the dust suction port 41 is a tubular protrusion at the lower left position of the filter chamber 4;

[0044] The upper filter element 42 and the lower filter element 43 are both hollow cylinders, and the bottoms of the upper filter element 42 and the lower filter element 43 are sealed and airtight, so the two filter elements 42 and 43 cannot communicate with each other. The outer peripheral surface of the upper filter element 42 is a breathable material that can filter dust and other impurities, namely the upper filter screen 421 (including but not limited to polyester fiber, polypropylene fiber, glass fiber, etc.), and the outer peripheral surface of the lower filter element 43 is a breathable material that can filter dust and other impurities, namely the lower filter screen 431 (including but not limited to polyester fiber, polypropylene fiber, glass fiber, etc.). The lower filter element 43 is located below the upper filter element 42;

[0045] The third pipeline 23 and the fourth pipeline 24 are not connected to each other and are two independent pipelines.

[0046] Reference Figure 1 and Figure 2 , through the device for controlling the valve to back-blow the filter element, the multiple valves 3 each include a valve plate 311, a valve body 312, a pull rod 313 and a pressure actuator 314; the valve body 312 is a hollow tube. The valve plate 311 is in the shape of a disc and is placed in the hollow tube of the valve body 312. The multiple valves 3 are fixedly connected to the multiple pipes 2 through the valve body 312. There are two pull rods 313 in an "L" shape, one of which passes through the valve plate 311 in the valve body 312 and is located at the central axis position of the valve plate 311, and the other passes through the pressure actuator 314. The valve plate 311 can rotate around the pull rod 313. When the valve plate 311 rotates to be parallel to the end face of the valve body 312, as shown Figure 2 (1) The multiple valves 3 are in a closed state; when the valve plate 311 rotates to be perpendicular to the end surface of the valve body 312, Figure 2 (2) The plurality of valves 3 are in an open state. The opening or closing of the plurality of valves 3 can be controlled manually or automatically by a microcomputer.

[0047] When starting to work, the vacuum cleaner operator starts the vacuum cleaner, and the fan 1 starts to suck dust. The dust-containing gas is sucked into the filter chamber 4 and blown from the outside to the upper filter element 42 and the lower filter element 43. As a result, dust and garbage are retained on the surface of the upper filter screen 421 and the lower filter screen 431, and the gas continues to flow to the multiple pipes 2. The opening and closing of the multiple valves 3 are controlled manually or automatically by a microcomputer, and the gas is discharged through the silencer outlet pipe 5 through the opened multiple valves 3. When cleaning the filter element, by controlling the opening and closing of the multiple valves 3, the garbage-free gas flows back to the multiple pipes 2 through the opened multiple valves 3, and finally flows back to the upper filter element 42 or the lower filter element 43 to achieve backblowing, and the dust and garbage retained on the filter element are blown to the bottom of the filter chamber. The fallen dust can be manually handled later, thereby achieving the cleaning of the vacuum cleaner filter element. Specifically, the device for backblowing the filter element by controlling the valve of the present invention has the following three working states:

[0048] Reference Figure 1 and Figure 3 , the device for back-blowing the filter element by controlling the valves is in the dust suction state, by controlling the opening and closing of the multiple valves 3, the third valve 33 and the fifth valve 35 are all in the closed state, and the first valve 31, the second valve 32, and the fourth valve 34 are all in the open state. When the fan 1 is turned on, the gas containing dust and other garbage from the outside enters the filter chamber 4 through the dust suction port 41 under the suction force of the fan 1, and blows the upper filter element 42 and the lower filter element 43 in the filter chamber 4 from the outside to the inside. Because the bottom of the lower filter element 43 and the upper filter element 42 are sealed, the upper filter screen 421 and the lower filter screen 431 are filtering breathable materials, which can effectively intercept and capture dust particles and garbage sucked into the dust-containing gas. The cleaned gas continues to flow upward and enters the first pipe 21 and the second pipe 22. Because the first valve 31 is open at this time, the gas enters the fourth pipe 24 through the second pipe 22; and because the second valve 32 is open and the third valve 33 is closed, the gas enters the fourth pipe 24 through the first pipe 21, and after merging with the gas entering the fourth pipe 24 through the second pipe 22, it enters the fan 1 through the air inlet 11, and then is discharged from the air outlet 12 into the fifth pipe 25; at this time, the third valve 33 is closed, and the fourth valve 34 is opened, and the gas is guided from the fifth pipe 25 to the silencer outlet pipe 5, and finally discharged to the outside. In this way, as the vacuuming process continues, dust and garbage will gradually accumulate on the periphery of the upper filter 421 and the lower filter 431, affecting their filtering efficiency and the overall performance of the vacuum cleaner.

[0049] Reference Figure 1 and Figure 4When the upper filter element is back-blown by the device for back-blowing the filter element through the control valve, by controlling the closing of the plurality of valves 3, the first valve 31, the third valve 33, and the fourth valve 34 are all in the closed state, and the second valve 32 and the fifth valve 35 are all in the open state. The gas enters the filter chamber 4 under the suction of the fan 1. Since the fan 1 of this embodiment is left-in and right-out for the gas and the first valve 31 is closed, the gas cannot be sucked into the second pipe 22 through the upper filter element 42, but is sucked into the first pipe 21 through the lower filter element 43. Since the first valve 31 is in the closed state, the second valve 32 is in the open state, and the third valve 33 is in the closed state, the gas enters the fourth pipe 24 through the first pipe 21, enters the fan 1 from the air inlet 12, and is discharged through the air outlet 12 to enter the fifth pipe 25. At this time, the third valve 33 and the fourth valve 34 are both in the closed state, and the fifth valve 35 is in the open state, so the gas enters the third pipe 23 from the fifth pipe 25 to the second pipe 22, and is finally guided into the upper filter element 42, and the upper filter screen 421 is backblown from the inside to the outside. The strong airflow blows away the dust particles or garbage attached to the outer periphery of the upper filter screen 421 and drops them to the bottom of the filter chamber 4, and is manually discharged to the outside of the vacuum cleaner, thereby achieving backblowing and cleaning of the upper filter element 42.

[0050] Reference Figure 1 and Figure 5 When the lower filter element is back-blown by the device for back-blowing the filter element through the control valve, the first valve 31 and the third valve 33 are all in the open state, and the second valve 32, the fourth valve 34, and the fifth valve 35 are all in the closed state by controlling the closing of the plurality of valves 3. The gas passes through the filter chamber 4 under the suction of the fan 1. Since the fan 1 of this embodiment enters the gas from the left and exits from the right and the second valve 32 is closed, the gas cannot be sucked into the first pipe 21 through the lower filter element 43, but is sucked into the second pipe 22 through the upper filter element 42. Because the first valve 31 is in an open state and the second valve 32 is closed, the gas enters the fourth pipe 24 through the second pipe 22, and then the gas enters the fan 1 from the air inlet 12, and is discharged through the air outlet 12 to enter the fifth pipe 25. Since the third valve 33 is open, the fourth valve 34, the fifth valve 35, and the second valve 32 are closed, the gas is introduced into the first pipe 21 from the fifth pipe 25, enters the lower filter element 43, and back-blows the lower filter screen 431 from the inside to the outside. The strong airflow blows the dust particles attached to the outer periphery of the lower filter screen 431 outward and drops them to the bottom of the filter chamber 4, and is discharged to the outside of the vacuum cleaner after manual treatment, thereby achieving back-blow and cleaning the lower filter element 43.

[0051] As described above, the device of the present invention controls the valve to blow back the filter element, and the dust and garbage accumulated on the outer periphery of the upper filter screen 421 and the lower filter screen 431 during normal vacuuming are blown from the inside to the outside to the bottom of the filter chamber 4, and then manually transported to the outside. This solves the problem that the existing vacuum cleaner in the background technology needs to be frequently shut down to remove the filter element for manual cleaning during use due to the clogging of the filter element, which has low work efficiency and increases the user's operating burden.

[0052] It should be noted that, in this article, relational terms such as first and second, primary and secondary, etc., and positional terms such as "upper end", "lower end", "left end", "right end", "left side", "right side", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order or position between these entities or operations that cannot be changed or replaced. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A device for back-blowing a filter element by controlling a valve, Features: It includes a fan, multiple pipes, multiple valves, a filter chamber and a silencer outlet pipe; The fan comprises an air inlet and an air outlet; The fan is fixedly connected to the plurality of pipelines, and the plurality of pipelines are fixedly connected via the plurality of valves; The plurality of pipelines include a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline; The plurality of valves include a first valve, a second valve, a third valve, a fourth valve and a fifth valve; The filter chamber is placed at the lower left end of the plurality of pipelines and is fixedly connected to the plurality of pipelines; The filter chamber comprises a dust suction port, an upper filter element and a lower filter element. The silencer air outlet pipe is connected to the pipeline through the valve.

2. A device for back-blowing a filter element by controlling a valve according to claim 1, Features: The air inlet is located on the left side of the fan, and the air outlet is located on the right side of the fan.

3. A device for back-blowing a filter element by controlling a valve according to claim 1 or 2, Features: The first pipeline is U-shaped and opens downward, with its left end passing through the upper filter element and the lower filter element and connected to the filter chamber, and its right end is a three-way pipe, connected to the fourth pipeline and the fifth pipeline through the multiple valves; The second pipeline is U-shaped, opens downward, is located below the first pipeline, has its left end directly connected to the upper filter element, and its right end is connected to the fourth pipeline through the valve; The third pipeline is L-shaped, and its two ends are connected to the second pipeline and the fifth pipeline respectively through the valve; The fourth pipeline is located below the second pipeline and is a three-way pipe, two openings of which are connected to the first pipeline and the second pipeline through the valve, and the other opening is connected to the air inlet; The fifth pipe is located below the silencer air outlet and is composed of two upper and lower three-way pipes, three openings of which are respectively connected to the first pipe, the third pipe, and the silencer air outlet pipe through the multiple valves, and another opening is connected to the air outlet.

4. A device for back-blowing a filter element by controlling a valve according to claim 3, Features: The first valve is located between the second pipeline and the fourth pipeline, connecting the second pipeline and the fourth pipeline; The second valve is located between the fourth pipeline and the first pipeline, connecting the fourth pipeline and the first pipeline; The third valve is located between the first pipeline and the fifth pipeline, connecting the first pipeline and the fifth pipeline; The fourth valve is located between the silencer air outlet pipe and the fifth pipe, connecting the silencer air outlet pipe and the fifth pipe; The fifth valve is located between the third pipeline and the fifth pipeline, connecting the third pipeline and the fifth pipeline.

5. A device for back-blowing a filter element by controlling a valve according to claim 1 or 2, Features: The first valve, the second valve, the third valve, the fourth valve and the fifth valve all include a valve body, a valve plate, a pull rod and a pressure actuator; The valve body is a hollow tubular object connected to the outside of the pipeline; There are two pull rods in an "L" shape, one of which passes through the valve body and the other passes through the pressure actuator; The valve plate is a disc-shaped object and is fixed inside the valve body through the pull rod.

6. A device for back-blowing a filter element by controlling a valve according to claim 5, Features: The valve plate is movably connected to the pull rod and can rotate around the pull rod.

7. A device for back-blowing a filter element by controlling a valve according to claim 1 or 2, Features: The filter chamber is a hollow cube; The dust suction port is a tubular protrusion on the left side of the outside of the filter chamber.

8. A device for back-blowing a filter element by controlling a valve according to claim 1 or 2, Features: The upper filter element includes an upper filter screen, and the lower filter element includes a lower filter screen; The upper filter element and the lower filter element are both hollow cylinders, the outer peripheral surface of the upper filter element is the upper filter screen, and the outer peripheral surface of the lower filter element is the lower filter screen.

9. A device for back-blowing a filter element by controlling a valve according to claim 8, Features: The lower filter element is located below the upper filter element.

10. A device for back-blowing a filter element by controlling a valve according to claim 1 or 2, Features: The third pipeline and the fourth pipeline have no connection relationship and are two independent pipelines.

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