Self-cleaning filter device

Abstract

The utility model discloses a self-cleaning filter device, relates to the technical field of dust collectors, and aims to solve the problems that most of the design schemes of self-cleaning filters in the current market in the prior art are not thorough in cleaning effect, the permeability of a filter element cannot be completely recovered, manual intervention or an external power source is needed, the complexity of use and maintenance is increased, and the cost is high. The structure is complex, the manufacturing cost is high, and the device is difficult to widely apply to various devices. The dust collector comprises a dust collector body, a dynamic magnetic attraction coupling automatic blowback device is fixedly installed on the dust collector body, a dust collection pipe is fixedly installed on one side of the dust collector body, the end of the dust collection pipe is fixedly connected with a dust collection port device, the dynamic magnetic attraction coupling automatic blowback device comprises an outer shell and an inner shell, and a filter is arranged in the dust collector body. A fan is connected to one side of the dust collector body, an air inlet of the fan and the dynamic magnetic attraction coupling automatic back flushing device are both arranged above the filter, and a connector is arranged at one end of the flow control bin.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust collector technical field, concretely is a kind of self-cleaning filter device. BACKGROUND

[0002] In the equipment needing filter device such as dust collector, air purifier, industrial dust removal equipment, filter is one of core components, its function is to intercept and capture particulate matter in air, to keep air clean. However, with the increase of use time, filter material surface will gradually accumulate dust, particulate matter and other pollutants, cause filter airflow resistance to increase, filter efficiency to drop, even possibly cause equipment performance to reduce or energy consumption to increase etc. problems, the method for solving this problem in traditional mainly includes:

[0003] Regular cleaning or replacing filter core: this method needs manual intervention, not only increases maintenance cost, but also can cause equipment downtime, affect use efficiency.

[0004] Mechanical vibration or patting cleaning: through mechanical device to filter core vibration or patting, to remove surface attached particulate matter. However, this method cleaning effect is limited, and possibly cause damage to filter material.

[0005] Reverse airflow cleaning: through reverse airflow to flush filter material surface, to remove attached particles. But in prior art, the generation of reverse airflow usually relies on external power source (such as fan or compressed air), complex structure and high energy consumption.

[0006] For example, application announcement number CN114307437A, a kind of self-cleaning filter based on reverse airflow. The scheme realizes self-cleaning function by the following ways:

[0007] Reverse airflow generation: set up an airflow channel in filter, when equipment runs, generate reverse airflow by external fan or motor. Airflow flushing: reverse airflow passes through filter material surface, flushes down attached particulate matter, to realize cleaning. Periodic cleaning: through timer or sensor to control the start and stop of reverse airflow, realize periodic cleaning

[0008] Among them, the self-cleaning filter scheme using reverse airflow still has the following limitations:

[0009] Dependence on external power source: the generation of reverse airflow needs additional fan or motor, increases energy consumption and structural complexity.

[0010] Limited cleaning effect: the force of reverse airflow is weak, difficult to completely remove filter material surface attached particulate matter, especially small particles.

[0011] Cannot realize in-situ cleaning: cleaning process can need to pause equipment operation, affect use efficiency.

[0012] High maintenance cost: due to incomplete cleaning effect, regular manual cleaning or replacement of filter element is still needed, so there is an urgent need to develop a self-cleaning filter device to help people solve the existing problems. Novelty content

[0013] The utility model discloses a kind of self-cleaning filter devices, to solve the problem that the design scheme of current market self-cleaning filter is mostly incomplete cleaning effect, cannot completely restore the permeability of filter element, needs manual intervention or external power source, increase the complexity of use and maintenance, complex structure, high manufacturing cost, difficult to be widely applied to various equipment.

[0014] To achieve the above object, the utility model provides the following technical scheme: a kind of self-cleaning filter device, including dust collector body, dynamic magnetic attraction coupling automatic backflushing device is fixedly installed on the dust collector body, dust suction pipe is fixedly installed on one side of the dust collector body, dust suction port device is fixedly connected at the end of the dust suction pipe, the dynamic magnetic attraction coupling automatic backflushing device includes shell and inner shell, first strong magnet is fixedly installed on the inner side of the shell, movable piece is provided on the end of the inner shell away from shell, long bolt is welded in the central position of the movable piece, second strong magnet is provided at the top of long bolt near the first strong magnet, the dust suction port device includes flow control bin, sealing disc is rotatably connected in the flow control bin, pull rod is fixedly connected on the sealing disc, the pull rod is slidably connected with flow control bin.

[0015] Through the above technical scheme, two strong magnets keep filter element assembly tightly closed by strong magnetic attraction, when normal operation, negative pressure in dust collector is used for dust collection, dust suction port device is naturally opened under the driving of dust collector negative pressure, when dust collector needs filter cleaning operation, press the pull rod of dust suction port device, air no longer flows, internal negative pressure of dust collector surges, through specially designed air power structure, the end face of shell and the special hole of inner shell are in air flow, generate reverse torque, when negative pressure value reaches set threshold, the torque will overcome magnetic attraction and make filter element assembly separate, along with the change of pressure difference, assembly is quickly reset and closed under the action of magnetic force, the pulse type reverse airflow generated thereby can effectively strip particles attached to filter surface, using negative pressure and air power structure generated during equipment operation, automatically generate reverse airflow, without additional fan or motor, through the pulse type reverse airflow generated by periodic opening and closing mechanism, can effectively strip particles attached to filter surface, more complete cleaning effect, realize efficient cleaning, entire cleaning process is automatically completed in equipment operation, without stopping or manual intervention, significantly improve use efficiency, realize in-situ self-cleaning, adopt magnetic attraction coupling mechanism, simple structure, stable operation, applicable to various filtering equipment.

[0016] The utility model discloses a further configuration in a preferable example can be: the inner casing is connected with the shell thread, the movable sheet is provided with the internal rubber washer at the junction of inner casing.

[0017] Through the above technical scheme, the internal rubber washer is installed at the joint of the movable sheet and the inner casing to weaken the impact of the reciprocating movement of the movable sheet on the inner casing.

[0018] The utility model discloses a further configuration in a preferable example can be: the outside of shell is provided with shell nut, the inside of first strong magnet is provided with countersunk head screw with shell nut screw connection, be provided with air inlet hole on the shell.

[0019] The utility model discloses a further configuration in a preferable example can be: the long bolt is provided with the internal nut for fixing second strong magnet, the outside of long bolt is provided with limit nut.

[0020] Through the above technical scheme, the limit nut prevents the second strong magnet from excessively separating from the inner casing.

[0021] The utility model discloses a further configuration in a preferable example can be: the rubber washer is arranged at the connecting place of the shell and the dust collector body, the outside of inner casing is provided with the supporting leg, and the spring is fixedly connected between the supporting leg and the movable sheet, and the spring is provided with three.

[0022] Through the above technical scheme, the spring is fixed between the inner casing and the movable sheet at two ends, and there are three springs that are equally distributed, which provide additional tension for the movable sheet, and the three equally distributed springs balance the stress of the movable sheet, so that the movable sheet can avoid deviation in reciprocating movement.

[0023] The utility model discloses a further configuration in a preferable example can be: the filter is arranged in the dust collector body, and the fan is connected to one side of the dust collector body, the air inlet of the fan and the dynamic magnetic attraction coupling automatic back flushing device are arranged above the filter, one end of the flow control bin is provided with the connector, and the other end of the flow control bin is provided with the dust inlet head.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] 1.The two strong magnets of the utility model keep the filter core assembly tightly closed through strong magnetic attraction, when normally operating, the negative pressure in the dust collector is used for dust collection, the dust suction port device is naturally opened under the driving of the negative pressure of the dust collector, when the dust collector needs to run with filter cleaning, press the dust suction port device lever, air no longer circulates, the internal negative pressure of the dust collector surges, through the special designed air power structure, the end face of the shell and the special hole of the inner shell body circulate air, reverse torque is generated, when the negative pressure value reaches the set threshold value, the torque will overcome the magnetic attraction to separate the filter core assembly, with the change of pressure difference, the assembly is quickly reset and closed under the action of magnetic force, the pulse type reverse airflow generated thereby can effectively strip the particles attached to the surface of the filter material, the negative pressure and the air power structure generated during the operation of the equipment are used to automatically generate reverse airflow, without additional fan or motor, the pulse type reverse airflow generated through the periodic opening and closing mechanism can effectively strip the particles attached to the surface of the filter material, the cleaning effect is more thorough, efficient cleaning is realized, the whole cleaning process is automatically completed in the operation of the equipment, without shutdown or manual intervention, the use efficiency is significantly improved, in-situ self-cleaning is realized, the magnetic attraction coupling mechanism is adopted, the structure is simple, the operation is stable, and the device is suitable for various filtering equipment

[0026] 2.The spring of the utility model is fixed between the inner shell body and the movable piece at both ends, and there are three springs equally divided by three, which provides additional tension for the movable piece, and the three evenly distributed springs balance the stress on the movable piece, so that the movable piece can avoid deviation during reciprocating motion. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front view of a self-cleaning filter device of the utility model;

[0028] Figure 2 It is a sectional view of a dynamic magnetic attraction coupling automatic back flushing device of the utility model;

[0029] Figure 3 It is an air circulation schematic view of a dynamic magnetic attraction coupling automatic back flushing device of the utility model;

[0030] Figure 4 It is a schematic view of the dust suction port device in the unblocked state;

[0031] Figure 5 It is a schematic view of the dust suction port device in the blocked state.

[0032] In the drawing: 1, dust collector body;

[0033] 2, filter;

[0034] 3, fan;

[0035] 4. Dynamic magnetic coupling automatic back flushing device; 401. Shell nut; 402. Countersunk screw; 403. First strong magnet; 404. Shell; 405. Inner nut; 406. Rubber washer; 407. Inner shell; 408. Limiting nut; 409. Spring; 410. Inner rubber washer; 411. Moving piece; 412. Second strong magnet;

[0036] 5. Dust suction pipe;

[0037] 6. Dust suction port device; 601. Connection head; 602. Flow control bin; 603. Dust inlet head; 604. Lever; 605. Sealing disc. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments of the present application.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense. For example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between two elements inside. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0041] Please refer to Figures 1-5The utility model provides an embodiment: a kind of self-cleaning filter device, including dust collector body 1, dynamic magnetic attraction coupling automatic backflushing device 4 is fixedly installed on dust collector body 1, dust suction pipe 5 is fixedly installed on one side of dust collector body 1, the end of dust suction pipe 5 is fixedly connected with dust suction port device 6, dynamic magnetic attraction coupling automatic backflushing device 4 includes shell 404 and inner casing 407, the inside of shell 404 is fixedly installed with first strong magnet 403, the end away from shell 404 on inner casing 407 is provided with movable sheet 411, long bolt is welded in the central position of movable sheet 411, the top of long bolt is provided with second strong magnet 412 near first strong magnet 403, dust suction port device 6 includes flow control bin 602, sealing disc 605 is rotatably connected in flow control bin 602, flow control bin 602 is slidably connected with the push lever 604 of the fixed connection of sealing disc 605.

[0042] Please refer to Figure 2 , inner casing 407 is connected with shell 404 by screw thread, and the connecting portion of movable sheet 411 and inner casing 407 is provided with internal rubber gasket 410.

[0043] Please refer to Figure 2 And Figure 3 , the outside of shell 404 is provided with shell nut 401, the inside of first strong magnet 403 is provided with countersunk screw 402 connected with shell nut 401 by screw thread, and air inlet hole is arranged on shell 404.

[0044] Please refer to Figure 2 , long bolt is provided with internal nut 405 for fixing second strong magnet 412, and the outside of long bolt is provided with limit nut 408.

[0045] Please refer to Figure 2 And Figure 3 , rubber gasket 406 is arranged at the connecting portion of shell 404 and dust collector body 1, the outside of inner casing 407 is provided with supporting leg, and spring 409 is fixedly connected between supporting leg and movable sheet 411.

[0046] Please refer to Figure 1 、 Figure 4 And Figure 5 , filter 2 is arranged in dust collector body 1, and fan 3 is connected to one side of dust collector body 1, the air inlet of fan 3 and dynamic magnetic attraction coupling automatic backflushing device 4 are all arranged above filter 2, one end of flow control bin 602 is provided with connecting head 601, and the other end of flow control bin 602 is provided with dust inlet head 603.

[0047] Working principle: when using, in initial state, such as Figure 2, two strong magnets keep the filter assembly tightly closed by strong magnetic attraction, when running normally, the negative pressure in the cleaner body 1 is used for dust suction, the dust suction port device 6 is opened naturally under the driving of the negative pressure of the cleaner, as shown in Figure 4 , the cleaner works, it cannot generate enough reverse torque to separate the strong magnet group, the dynamic magnetic coupling automatic back blowing device 4 is always closed and does not work, when the cleaner needs to clean the filter 2, press the rod 604 of the dust suction port device 6, as shown in Figure 5 , air no longer flows, the internal negative pressure of the cleaner increases sharply, through the special designed air power structure, as shown in Figure 3 , the air inlet hole on the end surface of the outer shell 404 and the inner shell body inside are in air flow, a reverse torque is generated, when the negative pressure value reaches the set threshold value, the torque will overcome the magnetic attraction to make the movable piece 411 separate from the inner shell body 407, with the change of pressure difference, the movable piece 411 is quickly reset and closed under the action of magnetic force, the pulse type reverse airflow generated thereby can effectively strip the particles attached to the surface of the filter 2, the airflow shock formed by this periodic opening and closing mechanism can realize the in-situ self-cleaning of the filter system, the whole process can continuously maintain the filter core permeability without manual intervention.

[0048] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A self-cleaning filter device, comprising a vacuum cleaner body (1), characterized in that: A dynamic magnetic coupling automatic back-blowing device (4) is fixedly installed on the vacuum cleaner body (1). A suction pipe (5) is fixedly installed on one side of the vacuum cleaner body (1). A suction port device (6) is fixedly connected to the end of the suction pipe (5). The dynamic magnetic coupling automatic back-blowing device (4) includes an outer shell (404) and an inner shell (407). A first strong magnet (403) is fixedly installed on the inner side of the outer shell (404). The inner shell (407) is located away from the outer shell (404). One end is provided with a movable piece (411), and a long bolt is welded to the center of the movable piece (411). A second strong magnet (412) is provided at the top of the long bolt near the first strong magnet (403). The dust suction port device (6) includes a flow control chamber (602). A sealing disc (605) is rotatably connected inside the flow control chamber (602). A lever (604) is fixedly connected to the sealing disc (605). The lever (604) is slidably connected to the flow control chamber (602).

2. The self-cleaning filter device according to claim 1, characterized in that: The inner shell (407) is threadedly connected to the outer shell (404), and an internal rubber gasket (410) is provided at the connection between the movable piece (411) and the inner shell (407).

3. The self-cleaning filter device according to claim 1, characterized in that: The outer side of the outer shell (404) is provided with an outer shell nut (401), and the inner side of the first strong magnet (403) is provided with a countersunk screw (402) that is threadedly connected to the outer shell nut (401). An air inlet is provided on the outer shell (404).

4. The self-cleaning filter device according to claim 1, characterized in that: The long bolt is provided with an internal nut (405) for fixing the second strong magnet (412), and a limit nut (408) is provided on the outside of the long bolt.

5. A self-cleaning filter device according to claim 1, characterized in that: A rubber gasket (406) is provided at the connection between the outer shell (404) and the vacuum cleaner body (1). A support foot is provided on the outer side of the inner shell (407). A spring (409) is fixedly connected between the support foot and the movable piece (411).

6. A self-cleaning filter device according to claim 1, characterized in that: The vacuum cleaner body (1) is equipped with a filter (2). A fan (3) is connected to one side of the vacuum cleaner body (1). The air inlet of the fan (3) and the dynamic magnetic coupling automatic back-blowing device (4) are both located above the filter (2). A connector (601) is provided at one end of the flow control chamber (602), and a dust inlet head (603) is provided at the other end of the flow control chamber (602).

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