KR102387777B1 - Auto cleaning filter structure - Google Patents

Abstract

The present invention relates to an auto cleaning filter structure which enables to wash a filter with a simple configuration and improve filter cleaning power while minimizing fluid consumption. In the present invention, the auto cleaning filter structure installed between an inlet pipe (I) connected to a fluid supply line and an outlet pipe (O) for discharging the filtered fluid to filter foreign substances contained in the fluid, comprises: a housing (10) having one end mounted on the inlet pipe (I) and the other end mounted on the outlet pipe (O); a filter (20) mounted on the inner periphery of the housing (10), having an upper end disposed toward the inlet pipe (I) and a lower end disposed toward the outflow pipe (O) and mounted obliquely in a mesh form; a discharge pipe (30) mounted on the housing (10) corresponding to the lower end of the filter (20), while being mounted in communication with the housing (10) at the front end of the filter (20) at the same angle as the inclination angle of the filter (2) and disposed toward the front and the center of the filter (20), and having a control valve (31) for opening and closing; a motor (41) mounted on the discharge pipe (30); a washing arm (42) having one end disposed in the center of the filter (20) to wash the front surface of the filter (20) while rotating around one end, and the other end extending radially to contact the front surface of the filter (20); and a washing unit (40) including a power transmission means (43) connecting the motor (41) and the washing arm (42) to rotate the washing arm (42) through the rotational force of the motor (41).

Description

Self-cleaning filter structure {AUTO CLEANING FILTER STRUCTURE}

The present invention relates to a self-cleaning filter structure, and more particularly, to a self-cleaning filter structure capable of washing a filter with a simple configuration and improving the cleaning power of the filter while minimizing fluid consumption.

In general, pre-treatment filters are used to remove various foreign substances contained in fluids in all industrial sites such as petrochemicals, industrial water treatment, and cooling systems.

In the case of a filter without a cleaning function, the flow rate that can be filtered decreases due to an increase in foreign substances accumulated in the filter as the period of use increases, and the flow of the fluid is stagnated due to the pressure and internal resistance caused by the foreign substances. Furthermore, the process using the fluid is disrupted, which leads to product failure.

Accordingly, a filter having a washing function, that is, an auto filter, has been developed and used. The auto filter includes a housing having an outlet through which a fluid is introduced and an outlet through which the fluid is discharged, a filter installed in the inner space of the housing, and a cleaning device for cleaning and washing the filter. Such an auto filter is operated by detecting the pressure difference between the outlet and the outlet, determining whether to wash the filter, and operating the washing device to wash the filter.

However, the conventional otter filter is not simple in construction and has a limitation in that the cleaning power of the filter is not high. In addition, the conventional auto filter is a method of discharging suspended matter attached to the filter by separating it from the filter, and has a disadvantage of consuming a lot of fluid together for discharging the suspended matter by focusing only on the discharge.

Republic of Korea Patent Publication No. 10-1169954 (2012. 07. 25)

The present invention has been devised in view of the above problems, and an object of the present invention is to provide a self-cleaning filter structure capable of washing a filter with a simple configuration.

Another object of the present invention is to provide a self-cleaning filter structure having improved cleaning power of a filter while minimizing fluid consumption.

According to the features for achieving the above object, the self-cleaning filter structure is installed between an inlet pipe connected to the fluid supply line and an outlet pipe for discharging the filtered fluid to automatically filter foreign substances contained in the fluid. A washing filter structure comprising: a housing having one end mounted on the inlet pipe and the other end mounted on the outlet pipe; a filter mounted on the inner periphery of the housing, an upper end disposed toward the inlet pipe, and a lower end disposed toward the outlet pipe, inclinedly mounted, and formed in a mesh shape; a discharge pipe mounted on a housing corresponding to the lower end of the filter, mounted in communication with the housing at the front end of the filter, disposed toward the center of the front end of the filter at the same angle as the inclination angle of the filter, and having a control valve for opening and closing; and a motor mounted on the discharge pipe, and a washing arm having one end disposed in the center of the filter and the other end extending radially in contact with the front surface of the filter so as to wash the front surface of the filter while rotating around one end; and the motor; and a washing unit including a power transmission means connecting the motor and the washing arm to rotate the washing arm through the rotational force of the .

In addition, a detection sensor for detecting the degree of adhesion of foreign substances to the filter may be mounted on the housing.

In addition, the washing unit includes a rotating shaft formed at one end of the washing arm, a radially extending support arm that rotatably supports the rotating shaft, and is mounted on the inner periphery of the housing at the front of the filter and the support arm is connected. It may include a support ring.

In addition, the power transmission means may be composed of a belt connecting the rotation shaft of the washing arm and the rotation shaft of the motor.

According to the self-cleaning filter structure according to the present invention, since the filter can be washed with a simple configuration, it is easy to manufacture and thus can be produced inexpensively.

And, according to the present invention, since it is possible to improve the cleaning power of the filter while minimizing the consumption of fluid, there is an effect of exhibiting a high cleaning power quickly and with little waste of fluid.

1 is a perspective view showing the appearance of an automatic cleaning filter structure according to the present invention;
2 is a cross-sectional view taken along line A-A' in FIG. 1;
3 is an exploded perspective view showing the configuration of the self-cleaning filter structure according to the present invention;
4 is a cross-sectional view showing the action of the self-cleaning filter structure according to the present invention;
5 is a view showing a coupling relationship between the main tube and the bypass tube.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view showing the exterior of the self-cleaning filter structure according to the present invention, FIG. 2 is a cross-sectional view taken along line A-A' in FIG. 1, and FIG. 3 is a configuration of the self-cleaning filter structure according to the present invention. It is an exploded perspective view.

As shown, the self-cleaning filter structure according to the present invention is mounted between the inlet pipe (I) connected to the fluid supply line and the outlet pipe (O) for discharging the filtered fluid to filter foreign substances contained in the fluid. As such, it is configured to include a housing 10 , a filter 20 , a discharge pipe 30 , and a washing unit 40 , and may further include a detection sensor 50 .

The housing 10 has one end mounted on the inlet pipe (I) and the other end mounted on the outlet pipe (O) so that the fluid flowing in from the inlet pipe (I) flows into the outlet pipe (O), inside and out It is a configuration in which the components according to the present invention are mounted. The housing 10 is generally cylindrical and has a configuration for mounting to the inlet pipe (I) and the outlet pipe (O). For example, as shown in FIG. 1 , it can be bolted to the inlet pipe (I) and the outlet pipe (O) through the flange 11 having a flange 11 having a fastening hole 12 formed therein. .

The filter 20 is mounted on the inner periphery of the housing 10 to filter foreign substances contained in the fluid passing therethrough. Filters of various materials and particle sizes may be used as the filter 20 . In this embodiment, a sus mesh filter may be used. And the filter may be used as a single layer, or may be used overlapping with 2 or 3 layers. At this time, in the case of using a three-ply filter, a sus mesh filter for 1 ply and 2 ply and a filter of PP, PE or non-woven fabric may be used for the 3 ply, which are selected according to the size and condition of the fluid to be filtered and foreign substances. It is preferred to apply

When the filter 20 is mounted on the inner periphery of the housing 10, it is inclinedly mounted. That is, the upper end is disposed toward the inlet pipe (I) and the lower end is disposed toward the outlet pipe (O) side and is inclinedly mounted. This is to form a space at the lower end of the filter in which foreign substances can be collected by guiding foreign substances caught in the filter 20 to the lower end of the filter.

The inclination angle of the filter is not particularly limited, but when it is less than 30°, the foreign material inducing performance according to the inclination arrangement is lowered, and when it exceeds 45°, the foreign material inducing performance is not exhibited to the extent that the area where the filter is arranged is increased. It is preferably in the range of 30° to 45°.

In order to support the filter 20 , a fixing ring may be mounted or a protrusion may be formed on the inner circumferential surface of the housing 10 .

The discharge pipe 30 is a pipe for discharging foreign substances attached to the filter 20 together with the fluid, and is mounted on the housing 10 corresponding to the lower end of the filter 20. At the front end of the filter 20, the housing ( 10) is installed in communication with At this time, the angle at which the discharge pipe 30 is mounted is the same as the inclination angle of the filter 20 and faces the center of the front end of the filter 20 . This facilitates the discharge of foreign substances collected in the downwardly inclined portion at the front end of the filter 20, and also uses a belt between the motor 41 and the rotation shafts 41a and 42a of the washing arm 42 to be described below. to connect

And a control valve 31 for opening and closing the discharge pipe 30 is mounted at the lower end of the discharge pipe 30 . The position of the control valve 31 is not particularly limited, but is installed to be spaced apart from the motor 41 to the lower end in order to avoid interference with the motor 41 and the belt.

The washing unit 40 is configured to include a motor 41 , a washing arm 42 , and a power transmission means 43 . The motor 41 is mounted on the discharge pipe 30 , and is installed above the control valve 31 of the discharge pipe 30 , and the entire motor 41 may be installed inside the discharge pipe 30 , but the discharge pipe In order to reduce the fluid flow resistance through 30 and to facilitate motor maintenance, only the rotating shaft 41a of the motor 41 penetrates the side of the discharge pipe 30 to be exposed to the inside of the discharge pipe 30, and the motor ( 41) The body may be disposed outside the discharge pipe (30).

The washing arm 42 is to separate foreign substances attached to the front surface of the filter 20 from the filter 20 while rotating, and is formed in the form of a washing brush. One end of the washing arm 42 is disposed in the center of the filter 20 , and the other end is radially extended to be in contact with the front surface of the filter 20 . At this time, the washing arm 42 rotates around its one end to wash the filter 20 , and for this purpose, the motor 41 and the washing arm 42 are connected by a power transmission means 43 .

The power transmission means 43 may have various configurations, and in the present embodiment, the configuration of a belt is exemplified.

And the washing unit 40 includes a rotating shaft 42a formed at one end of the washing arm 42, a radially extending support arm 44 rotatably supporting the rotating shaft 42a, and the filter ( It is mounted on the inner periphery of the housing 10 on the rear surface of the 20) and may further include a support ring 45 to which the support arm 44 is connected.

At this time, since the washing arm 42 is disposed on the front side of the filter 20 and the support arm 44 on which the washing arm 42 is mounted is disposed on the back side of the filter 20, the central portion of the filter 20 penetrates. A hole is formed and the rotating shaft 42a passes through the through hole to mount the washing arm 42 on the support arm 44 .

Also, the detection sensor 50 is mounted on the housing 10 and detects the degree of attachment of foreign substances to the filter 20 . The detection sensor 50 may detect a change in pressure at the front and rear ends of the filter 20, a change in flow rate, or a change in conductivity. Alternatively, a sensor for detecting pH, residual chlorine, turbidity, etc. may be used as the detection sensor 50 .

Such a detection sensor 50 may be mounted on the front end and the rear end of the filter 20, respectively, and then detect a change in the measured value of the front end and the rear end, but only one detection sensor 50 at the rear end of the filter 20 It is possible to determine the degree of adhesion of foreign substances based on the difference between the current measured values with respect to the measured values when the filter 20 is installed.

The washing unit 40 according to the present invention may be operated at a set time interval by the operation of a timer, but may be operated only when washing is required based on a measurement value sensed by the detection sensor 50 .

Next, the operation of the self-cleaning filter structure according to the present invention will be described.

4 is a cross-sectional view showing the action of the self-cleaning filter structure according to the present invention, and FIG. 5 is a view showing the coupling relationship between the main pipe and the bypass pipe.

The fluid introduced through the inlet pipe (I) from the fluid supply line passes through the filter structure according to the present invention and moves to the outlet pipe (O) in a state in which foreign substances are filtered. As such, the filter structure according to the present invention is coupled between the inlet pipe (I) and the outlet pipe (O), and it is also possible to disassemble from the inlet pipe (I) and the outlet pipe (O) for maintenance and replacement.

In addition, as shown in FIG. 5 , a bypass pipe may be additionally provided to allow fluid to be moved to the bypass pipe during maintenance and replacement of the main pipe or automatic cleaning of the filter 20 . For this purpose, general control, such as operation of a valve, is a technique well known to those of ordinary skill in the art, so a detailed description thereof will be omitted.

The filter 20 according to the present invention is inclined in the housing 10 . In more detail, the upper end is arranged toward the inlet pipe (I) and the lower end is arranged toward the outlet pipe (O), and is accumulated in the filter lower space by the flow of fluid and the load of foreign substances. Of course, foreign matter is adsorbed to the entire area of the filter, but since the filter 20 is inclined, a relatively large amount of foreign matter is collected into the lower space by the flow of the fluid.

When foreign substances are adsorbed to the filter 20 and the flow rate is slowed or the water quality is deteriorated, the discharge pipe 30 is opened and the washing unit 40 can be operated by detecting this through the detection sensor 50 . In this embodiment, the detection sensor 50 detects a change in the conductivity of the fluid to determine whether to operate. That is, the detection sensor 50 mounted on the rear end of the filter 20 detects the degree of adsorption of the foreign material by measuring the increase in resistance as the concentration of the fluid changes while the foreign material is adsorbed to the filter 20 .

The discharge pipe 30 is opened by the control valve 31 , and the washing unit 40 is operated by driving the motor 41 . The motor 41 is mounted on the discharge pipe 30, and the rotation shaft 41a of the motor 41 and the rotation shaft 42a of the washing arm 42 are connected to the power transmission means 43 by the power transmission means 43 to the rotation shaft ( When 41a) rotates, the washing arm 42 also rotates and the washing arm 42 sequentially contacts the front surface of the filter 20 to remove foreign substances adsorbed to the filter 20 .

The foreign substances separated from the filter 20 by the washing arm 42 are discharged to the outside together with the fluid discharged to the discharge pipe 30 . In particular, in the present invention, since foreign substances are collected at the lower end of the filter and the discharge pipe 30 is connected to the lower end of the housing 10, the foreign substances collected at the lower end of the filter are more easily discharged.

When the filter 20 is washed, the measured value sensed by the detection sensor 50 changes and is found to be in a normal state, and in this case, the control valve 31 of the discharge pipe 30 is closed and the motor 41 is driven to stop If the flow of fluid is changed to the bypass pipe, the bypass pipe can be closed and the fluid flow can be led to the main pipe.

In the present invention, while repeating this process, the performance of the filter 20 is stably and continuously maintained so that a load is not generated on the fluid supply line and the filtered purified fluid is stably supplied.

In addition, it is also possible to control the operation of a plurality of filter structures by transmitting the measured values sensed by the detection sensor 50 to a server or a central management center.

As described above, the rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those of ordinary skill in the art may make various modifications and adaptations within the scope of the claims. It is self-evident that you can

10: housing 11: flange
20: filter
30: discharge pipe 31: control valve
40: washing unit 41: motor
42: washing arm 43: power transmission means
44: support arm 45: support ring
50: detection sensor
I: inlet pipe
O: Outflow pipe

Claims (4)

In the self-cleaning filter structure that is installed between the inlet pipe (I) connected to the fluid supply line and the outlet pipe (O) for discharging the filtered fluid to filter foreign substances contained in the fluid,
a housing 10 having one end mounted on the inlet pipe (I) and the other end mounted on the outlet pipe (O);
a filter 20 mounted on the inner periphery of the housing 10, an upper end disposed toward the inlet pipe (I), and a lower end disposed toward the outlet pipe (O) side, inclinedly mounted, and formed in a mesh shape;
The filter 20 is mounted on the housing 10 corresponding to the lower end of the filter 20 and is mounted in communication with the housing 10 at the front end of the filter 20 at the same angle as the inclination angle of the filter 20 . ) disposed toward the front center of the discharge pipe 30 having a control valve 31 for opening and closing; and
A motor 41 mounted on the discharge pipe 30 adjacent to the control valve 31 and one end disposed in the center of the filter 20 to wash the front surface of the filter 20 while rotating around one end and the other end is extended radially and the washing arm 42 is in contact with the front surface of the filter 20, and the motor 41 and the washing arm 42 are rotated through the rotational force of the motor 41 for washing. Including; and a washing unit 40 including a power transmission means 43 for connecting the arms (42).
The washing unit 40 includes a rotating shaft 42a formed at one end of the washing arm 42, a radially extending support arm 44 rotatably supporting the rotating shaft 42a, and the filter ( 20) is mounted on the inner periphery of the housing 10 from the rear side and includes a support ring 45 to which the support arm 44 is connected,
The self-cleaning filter structure, characterized in that the power transmitting means (43) is a belt connecting the rotating shaft (42a) of the washing arm (42) and the rotating shaft (41a) of the motor (41).
According to claim 1,
The self-cleaning filter structure, characterized in that the housing (10) is equipped with a detection sensor (50) for detecting the degree of adhesion of foreign substances to the filter (20).
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