JP2019063748A - Filter cleaning device and filter cleaning method using the cleaning device - Google Patents

Abstract

To provide a filter cleaning device capable of stripping a fine foreign matter of sub μm caught by a fiber surface of a filter which has filter medium of a pleat shape and excluding the fine foreign matter from the fiber surface, and capable of effectively cleaning the filter medium from the surface to the inner part of the filter medium, and to provide a filter cleaning method using the cleaning device.SOLUTION: A filter cleaning device includes an immersion container which immerses a part of a filter having a filter medium folded in a pleat shape into cleaning liquid stored on the inner part so that a fold faces downward, a jet mechanism which jets a cleaning liquid jet flow to the filter medium which is immersed in the cleaning liquid of the immersion container and a cleaning liquid quantity adjusting mechanism which discharges the cleaning liquid stored on the inner part of the immersion container and adjusts cleaning liquid quantity.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cleaning device for a filter having a pleated filter medium and a filter cleaning method using the cleaning device.

  Heretofore, various cleaning devices for filters having filter media folded in a pleated shape have been disclosed and already put to practical use. For example, the filter cleaning device disclosed in Patent Document 1 has a configuration in which the filter is immersed in the cleaning solution stored in the cleaning tank and the cleaning device sprays the cleaning solution to remove foreign matter while applying vibration to the filter It is. The cleaning nozzle has a variable angle, and is configured to spray the cleaning solution while changing the angle to the filter immersed in the cleaning solution.

JP 2007-307492 A

  In recent years, a filter cleaning apparatus is required not only being able to clean foreign matter such as fine dust and oil components in the air adhering to the filter material of the filter, but also a structure capable of washing even sub-micrometer minute foreign matter. The sub-μm micro foreign matter has a size of 1/10 to 1/100 compared to the fiber diameter of the filter. That is, the gap between the minute foreign matter and the portion where the fiber is in contact is less than or equal to sub μm. Therefore, in the conventional filter cleaning device, it is difficult for the cleaning solution to enter the gap, and it is difficult to separate and push out the minute foreign matter by the sprayed cleaning solution.

  Even if the cleaning liquid is sprayed by the cleaning nozzle to the filter immersed in the cleaning liquid in the cleaning tank as in the filter cleaning device disclosed in Patent Document 1, it is difficult to clean the sub-μm minute foreign matter. This is because the interval between adjacent peaks or valleys of the pleated shape is as narrow as several millimeters, and the cleaning liquid entering the pleated shape enters parallel to the filter medium, so the strength of the cleaning liquid penetrating the filter medium is weak Because the micro foreign matter can not be pushed out sufficiently.

  The present invention has been made to solve the above-mentioned problems, and it is possible to exfoliate sub-μm minute foreign matter collected on the fiber surface of a filter having a pleated filter medium and push it out from the fiber surface. It is an object of the present invention to provide a filter cleaning device and a filter cleaning method using the cleaning device, which can effectively clean the surface of the filter medium from the inside.

  In the filter cleaning device according to the present invention, an immersion container for immersing a part of a filter having a filter material folded in a pleated shape in a cleaning liquid stored in the inside so that a fold line points downward; The apparatus includes an injection mechanism for injecting a cleaning solution jet onto the filter medium, and a cleaning solution amount adjusting mechanism for draining the cleaning solution accumulated in the immersion container to adjust the amount of the cleaning solution.

  The filter cleaning method according to the present invention is the filter cleaning method using the above-described filter cleaning device, wherein the cleaning solution is stored inside the immersion container, and a part of the filter having the filter medium folded in a pleated shape is contained in the cleaning solution. After immersing so that the fold line is downward, a cleaning solution jet is sprayed to the filter immersed in the cleaning solution of the immersion container by the injection mechanism, and the cleaning solution accumulated inside the immersion container by the injection of the injection mechanism is The amount of cleaning solution is adjusted by draining by the cleaning solution amount adjusting mechanism.

  According to the present invention, by immersing the filter in the cleaning solution of the target depth, the cleaning solution jet jetted from the nozzle can be reflected by the liquid surface of the cleaning solution, and is applied to the surface of the filter medium not immersed in the cleaning solution. be able to. The reflected cleaning fluid jet is incident on the surface of the filter medium at an angle close to perpendicular to the surface of the filter medium. That is, this filter cleaning device can separate sub-μm minute foreign matter collected on the fiber surface of the filter medium from the fiber surface by the reflected washing solution jet, and can push the separated small foreign matter out of the filter medium together with the washing solution jet. Since it can, it can wash | clean effectively from the surface of a filter medium to the inside.

It is a filter washing device concerning Embodiment 1 of the present invention, and is a sectional view showing typically the internal structure seen from the front direction. It is a filter washing device concerning Embodiment 1 of the present invention, and is a sectional view showing typically the internal structure seen from the side. It is explanatory drawing which showed typically an example of the filter wash | cleaned by the filter washing | cleaning apparatus which concerns on Embodiment 1 of this invention. It is explanatory drawing which showed typically the washing | cleaning-liquid amount adjustment mechanism of the filter washing | cleaning apparatus which concerns on Embodiment 1 of this invention. FIG. 6 is an explanatory view schematically showing a state in which the cleaning liquid is drained by the cleaning liquid amount adjusting mechanism, in the filter cleaning device according to Embodiment 1 of the present invention. It is explanatory drawing which showed typically the effect | action of the filter washing | cleaning apparatus which concerns on Embodiment 1 of this invention. The L value obtained by injecting the cleaning solution jet on the filter immersed in the cleaning liquid in the immersion container was compared with the L value obtained by injecting the cleaning solution jet on the filter not immersed in the cleaning liquid. It is a graph. It is explanatory drawing which showed typically the filter washing | cleaning apparatus which concerns on Embodiment 2 of this invention. It is explanatory drawing which showed typically the filter washing | cleaning apparatus which concerns on Embodiment 2 of this invention. It is explanatory drawing which showed typically the filter washing | cleaning apparatus which concerns on Embodiment 2 of this invention. It is explanatory drawing which showed typically the filter washing | cleaning apparatus which concerns on Embodiment 3 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts will be denoted by the same reference numerals, and the description thereof will be appropriately omitted or simplified. Further, the configuration, size, arrangement and the like of the configuration described in each drawing can be appropriately changed within the scope of the present invention.

Embodiment 1
First, a filter cleaning device according to a first embodiment of the present invention will be described based on FIGS. 1 to 7. FIG. 1 is a cross-sectional view schematically showing an internal structure as viewed from the front direction, which is a filter cleaning device according to Embodiment 1 of the present invention. FIG. 2 is a filter cleaning device according to Embodiment 1 of the present invention, and is a cross-sectional view schematically showing an internal structure viewed from the side direction. FIG. 3: is explanatory drawing which showed typically an example of the filter wash | cleaned by the filter washing | cleaning apparatus which concerns on Embodiment 1 of this invention. FIG. 4 is an explanatory view schematically showing a cleaning liquid amount adjusting mechanism of the filter cleaning device according to Embodiment 1 of the present invention.

  The filter washing | cleaning apparatus 100 wash | cleans the filter 1 which has the filter medium 10 folded in pleat shape, as shown to FIG. 1 and FIG. The filter cleaning device 100 includes the immersion container 2, the injection mechanism 3, and the cleaning liquid amount adjustment mechanism 4.

  As shown in FIG. 3, the filter 1 has a configuration in which a filter medium 10 composed of a porous non-woven fabric mainly made of chemical fibers is attached to the inside of the filter frame 11, and a medium performance or high performance air conditioning filter It is. The filter 1 may be one in which the filter medium 10 is adhered to the filter frame 11 or one in which the filter medium 10 is detachably attached to the filter frame 11. The medium-performance or high-performance air conditioning filter is the one with a particle diameter of 0.4 μm specified in test method type 2 of JIS standard B 9908: 2011 “Air filter unit for ventilation, performance test method of electric dust collector for ventilation”. The filter unit has an initial collection rate of less than 99%.

  The filter 1 is attached to an air intake of, for example, an air conditioner of a building, and collects foreign substances such as dust contained in the sucked air to filter the air. Since the filter 1 has a reduced ability to filter air due to foreign matter such as dust attached to the filter surface, it is removed from the air intake at regular intervals, replaced or cleaned, and foreign matter is removed. .

  The filter medium 10 is formed by intertwining fibers in a mesh shape, is folded in a pleated shape, and is attached to the inside of the filter frame 11. The filter medium 10 can be increased in surface area by folding it into a pleated shape, and the collection performance of foreign matter can be enhanced. Moreover, since the period until a foreign material adheres to the whole surface can be lengthened if the surface area increases, the filter medium 10 can be used for a long time. The fiber diameter used for the filter medium 10 varies depending on the type of the filter 1, but is, for example, about several μm to 20 μm, and the size of the network made of these fibers is also about several μm to 10 μm. The filter 1 using such a filter medium 10 has a thickness in the range of about 10 mm to 500 mm, and can capture fine dust and oil components and the like in the air due to its network structure.

  Also, in recent years, health damage of fine particulate matter such as PM 2.5 has been reported, and even in the case of medium-performance or high-performance air conditioning filters, collection of fine foreign matter having a diameter of several μm to sub-μm is required. There is. In a medium-performance or high-performance air conditioning filter, foreign matter having a diameter of 1 μm to several μm is collected by a network of fibers. In addition, a medium-performance or high-performance air conditioning filter is trapped by causing sub-μm minute foreign substances passing through a mesh of fibers to adhere to the fiber surface by electrostatic force or physical adsorption acting between the minute foreign substances and the fibers. Collect.

  As shown in FIG. 1, the immersion container 2 is a rectangular container having an opening on the upper surface, and folds a part of the filter 1 having the filter medium 10 folded in a pleated shape in the cleaning liquid 20 stored inside. Immersed so as to face downward. As shown in FIG. 4, a slit 21 extending in the height direction is formed on one side surface of the immersion container 2. The slits 21 may be formed from the upper surface to the lower surface of the immersion container 2 or may be formed in only a part of the side surface. The slit 21 is closed openably / closably by the cleaning liquid amount adjusting mechanism 4. The filter 1 may be immersed in the immersion container 2 as it is, or only the filter material 10 removed from the filter frame 11 may be immersed in the immersion container 2.

  As shown in FIG. 1 and FIG. 2, the jet mechanism 3 jets the cleaning liquid jet 3 a to the filter material 10 of the filter 1 immersed in the cleaning liquid 20. The injection mechanism 3 includes a plurality of nozzles 30 arranged in parallel above the opening surface of the immersion container 2, and a nozzle movement mechanism 31 for moving the nozzles 30 above the filter medium 10 in a direction substantially orthogonal to pleated ridges. Is equipped.

  As shown in FIG. 2, the nozzle 30 is configured to be able to jet the cleaning liquid jet 3a in a fan shape. In the nozzle 30, the ejected liquid fan-likely spreads, and a band-like fluid ejection pattern can be formed on the top surface of the filter medium 10. The plurality of nozzles 30 are arranged in parallel in a direction substantially parallel to the pleated ridge line formed by the filter medium 10. By the arrangement of the nozzles 30, the cleaning solution jet 3 a jetted from the nozzles 30 can form a band-like jet pattern on the filter 1. That is, the cleaning solution jets 3 a jetted from the nozzle 30 become a strip-shaped cleaning solution jet 3 a partially overlapping and reaching from the right end to the left end of the filter 1.

  The injection mechanism 3 is moved in a direction substantially orthogonal to the pleat-shaped ridge line using the nozzle moving mechanism 31 as shown in FIG. 1 in a state where a band-like jet pattern is formed on the filter 1. Then, in the injection mechanism 3, the belt-like jet pattern moves, and the cleaning liquid jet 3 a can be injected onto the entire surface of the filter 1. The cleaning solution jet 3a injected by the injection mechanism 3 is accumulated in the immersion container 2 together with the cleaning solution 20 accumulated in advance. Incidentally, as the nozzle moving mechanism 31, for example, there is a device which slides a fixing jig (not shown) to which the nozzle 30 or the nozzle 30 is attached by a conveyor.

  Although not shown in detail, the injection mechanism 3 may be configured to fix the position of the nozzle 30 and move the filter 1 in a direction substantially orthogonal to the pleated ridgeline. Further, the injection mechanism 3 may be provided with a plurality of rows of nozzles 30 arranged in parallel in a direction substantially parallel to the pleated ridgeline, along a direction substantially orthogonal to the ridgeline. In the injection mechanism 3, it is not necessary to provide the nozzle moving mechanism 31, or the distance by which the nozzle 30 is moved by the nozzle moving mechanism 31 can be shortened to enhance the cleaning efficiency.

  Next, the configuration of the cleaning solution amount adjusting mechanism 4 will be described based on FIGS. 4 and 5. FIG. 5 is a filter cleaning device according to Embodiment 1 of the present invention, and is an explanatory view schematically showing a state in which the cleaning liquid is drained by the cleaning liquid amount adjusting mechanism. As shown in FIGS. 4 and 5, the cleaning solution amount adjusting mechanism 4 adjusts the amount of the cleaning solution 20 accumulated inside the immersion container 2 by the injection mechanism 3. The cleaning solution amount adjustment mechanism 4 of the filter cleaning device 100 according to the first embodiment is configured as a shutter member 40 that covers the slit 21 formed in the immersion container 2 and extending in the height direction so as to be able to open and close. The shutter member 40 is attached to the outer surface of the immersion container 2 so as to be slidable in the height direction.

  As shown in FIG. 5, the cleaning solution amount adjusting mechanism 4 can open the slit 21 by lowering the shutter member 40 and drains the cleaning solution 20 accumulated in the immersion container 2 to the outside through the slit 21. That is, when the cleaning liquid amount adjusting mechanism 4 lowers the shutter member 40, the cleaning liquid 20 overflows from the upper part of the shutter member 40 and makes the cleaning liquid 20 accumulated inside the immersion container 2 the same height as the upper part of the shutter member 40. Then, the amount of the cleaning solution 20 is adjusted. The depth of the cleaning solution 20 stored in the immersion container 2 can be adjusted by changing the height of the shutter member 40. Therefore, even if the filter cleaning device 100 jets the cleaning liquid jet 3a from the nozzle 30 to the filter material 10 of the filter 1, the cleaning liquid 20 overflows from the upper part of the shutter member 40, so the depth of the cleaning liquid 20 accumulated in the immersion container 2 is constant. Can be

  Next, a filter cleaning method using the filter cleaning device 100 configured as described above will be described based on FIG. 6 with reference to FIGS. 1 to 5. FIG. 6 is an explanatory view schematically showing the operation of the filter cleaning device according to the first embodiment of the present invention.

  In the filter cleaning method, first, as shown in FIG. 1 and FIG. 2, the cleaning solution 20 is stored inside the immersion container 2 and the filter 1 having the filter medium 10 folded in a pleated shape is folded in the cleaning solution 20. Immerse so as to face downward. At this time, the depth of the cleaning solution 20 accumulated in the immersion container 2 can be adjusted by the cleaning solution amount adjusting mechanism 4 as shown in FIGS. 4 and 5. Then, the cleaning mechanism jet 3 a is jetted to the filter 1 immersed in the cleaning liquid 20 of the immersion container 2 by the jetting mechanism 3. The cleaning liquid 20 accumulated inside the immersion container 2 by the injection of the injection mechanism 3 is drained by the cleaning liquid amount adjusting mechanism 4 to adjust the amount of the cleaning liquid.

  As shown in FIG. 6, the cleaning solution jet 3 a jetted from the nozzle 30 passes between the peaks of the filter material 10 forming the pleated shape and between the peaks and is incident on the inside of the pleated shape. It reflects from the surface and scatters from the liquid surface in all directions. A part of the spouted washing solution jet 3a is incident at an angle close to perpendicular to the surface of the filter medium 10 which is the inner wall of the pleated shape. Since the cleaning solution jet 3a incident on the filter medium 10 has a high force to penetrate the filter medium 10, the cleaning solution jet 3a moves in the thickness direction in the filter medium 10 and gets out from the back surface. Foreign matter including minute foreign matter having a diameter of sub-μm attached to the fiber surface is peeled off by the flow of the cleaning solution jet 3a penetrating the filter medium 10, and is washed away from the filter medium 10 to the back side.

  Here, in order to evaluate the whiteness of the filter medium 10 after cleaning, the applicant applies the cleaning solution jet from the nozzle 30 to the filter 1 immersed in the cleaning liquid 20 of the immersion container 2 and the filter not immersed in the cleaning liquid 20. The L value was determined using a color difference meter by injecting 3a. FIG. 7 shows the L value obtained by injecting the cleaning solution jet onto the filter immersed in the cleaning liquid in the immersion container, and the L value obtained by injecting the cleaning solution jet onto the filter not immersed in the cleaning liquid It is the graph which compared with. The L value is a numerical value of 0 to 100, and is closer to 0 when the object is black, and closer to 100 when the object is white.

  As shown in FIG. 7, the L value of the filter medium (left side in FIG. 7) of the filter that was not immersed in the cleaning liquid 20 of the immersion container 2 was 57. On the other hand, the filter material 10 (right side in FIG. 7) of the filter 1 immersed in the cleaning liquid 20 of the immersion container 2 had an L value of 63, and an L value higher than that of the filter medium not immersed in the cleaning liquid 20 was obtained. This indicates that the cleaning liquid jetted from the nozzle 30 is reflected by the liquid surface of the cleaning liquid 20 and is incident on the filter medium 10, whereby the cleaning power is improved and the whiteness is increased.

  As described above, the filter cleaning device 100 according to the first embodiment immerses a part of the filter 1 having the filter medium 10 folded in a pleated shape in the cleaning liquid 20 stored in the inside such that the fold is directed downward. Immersion container 2 and injection mechanism 3 for injecting cleaning fluid jet 3a to filter medium 10 immersed in cleaning fluid 20 of immersion container 2, and amount of cleaning fluid for draining cleaning fluid 20 accumulated inside immersion container 2 and adjusting the amount of cleaning fluid And an adjusting mechanism 4.

  Therefore, the filter cleaning device 100 can reflect the cleaning solution jet 3 a jetted from the nozzle 30 on the liquid surface of the cleaning solution 20, and can hit the surface of the filter medium 10 which is not immersed in the cleaning solution 20. The reflected cleaning fluid jet 3a is incident on the surface of the filter medium 10 at an angle close to perpendicular to the surface of the filter medium 10, so the force of passing through the inside of the filter medium 10 and flowing out to the back side is large. That is, the filter cleaning device 100 can separate sub μm minute foreign substances collected on the fiber surface of the filter medium 10 from the fiber surface by the reflected cleaning liquid jet 3a, and the separated fine foreign substances together with the cleaning liquid jet 3a filter medium 10 Since it can be pushed out, the surface of the filter medium 10 can be effectively cleaned from the inside.

  Further, the filter cleaning device 100 adjusts the depth of the cleaning liquid 20 for immersing the filter 1 by the cleaning liquid amount adjusting mechanism 4, and the height at which the cleaning liquid jet 3 a jetted from the nozzle 30 is reflected by the liquid surface of the cleaning liquid 20. It can be changed. That is, the filter cleaning device 100 can make the cleaning solution jet 3a incident at an angle close to perpendicular to the surface of the filter medium 10 at an arbitrary height inside the pleated shape, and foreign matter adhering to the fiber surface is effectively effective. Can be cleaned. Thus, the filter cleaning device 100 can effectively clean the entire area from the valley portion to the peak portion of the filter medium 10.

Second Embodiment
Next, a filter cleaning device 110 according to a second embodiment of the present invention will be described based on FIGS. 8 to 10 are explanatory views schematically showing a filter cleaning device according to a second embodiment of the present invention. In addition, about the same structure as the filter washing | cleaning apparatus 100 demonstrated in Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted suitably.

  In addition to the structure of the filter washing | cleaning apparatus 100 of Embodiment 1, the filter washing | cleaning apparatus 110 which concerns on Embodiment 2 shown in FIGS. 8-10 carries in the filter 1 to the inside of the immersion container 2, The filter 1 after washing | cleaning. Is carried out from the immersion container 2 to the outside.

  The transport mechanism 6 has a conveyor in which a carry-in conveyor 60, an in-container conveyor 61, and a carry-out conveyor 62 are arranged in a line. The carry-in conveyor 60 is provided outside the immersion container 2 and on the side for carrying the filter 1 into the interior of the immersion container 2. The in-container conveyor 61 is provided inside the immersion container 2. The carry-out conveyor 62 is provided outside the immersion container 2 and is provided on the side for carrying the filter 1 out of the immersion container 2 after cleaning.

  The shutter member 40 of the filter cleaning device 110 unloads the cleaned filter 1 from the immersion container 2 to the outside from the immersion container 2 and the inlet shutter member 40a that closes the slit formed on the side for carrying the filter 1 into the immersion container 2 openably. It is comprised by the carrying out side shutter member 40b which block | closes the slit formed in the side so that opening and closing is possible.

  That is, as shown in FIG. 8, the transport mechanism 6 is configured to lower the loading-side shutter member 40 a to open the slit and load the filter 1 into the interior of the immersion container 2. Further, as shown in FIG. 10, the transport mechanism 6 is configured to lower the loading-side shutter member 40a to open the slit, and to carry the cleaned filter 1 out of the immersion container 2 to the outside.

  In addition, the transport mechanism 6 includes a first filter position detection unit 70 that detects the filter 1 carried into the interior of the immersion container 2 and a second filter position detection unit 71 that detects the filter carried out to the outside of the immersion container 2. And have. The first filter position detection means 70 and the second filter position detection means 71 are, for example, an optical sensor or the like.

  Then, the transport mechanism 6 drives the loading-side shutter member 40a based on the detection information of the first filter position detection means 70, and drives the delivery-side shutter member 40b based on the detection information of the second filter position detection means 71. The control device 8 is further provided.

  Next, a method for cleaning a filter using the filter cleaning device 110 according to Embodiment 2 will be described. First, as shown in FIG. 8, the filter cleaning device 110 detects the filter 1 conveyed by the loading conveyor 60 by the first filter position detection means 70. The control device 8 lowers the loading-side shutter member 40 a to open the slit based on the detection information of the first filter position detecting means 70, and brings the filter 1 into the immersion container 2.

  Next, when the loading-side shutter member 40 a is lowered, the control device 8 operates the in-container conveyor 61 to load the filter 1 into the interior of the immersion container 2. When the filter 1 is completely carried into the immersion container 2, the first filter position detecting means 70 detects that the filter 1 has passed. The control device 8 stops the transport mechanism 6 based on the detection information of the first filter position detection means 70, and raises the carry-in side shutter member 40a to the target position.

  When the filter 1 is carried into the interior of the immersion container 2, the filter cleaning device 110 jets the cleaning liquid jet 3 a from the nozzle 30 and stores the cleaning liquid 20 in the immersion container 2. Thereby, a part of the filter 1 is immersed in the cleaning liquid 20. The depth of the cleaning solution 20 stored in the immersion container 2 can be set in accordance with the type of the filter 1 to be cleaned.

  The filter cleaning device 110 moves the nozzle 30 in a direction substantially orthogonal to the pleated ridge line by the nozzle moving mechanism 31, and jets the cleaning liquid jet 3 a onto the entire surface of the filter 1 to clean the filter medium 10. The carry-in side shutter member 40a or the carry-out side shutter member 40b can be fixed during washing of the filter 1, or can be moved up and down with time to change the height. The filter cleaning device 110 can change the depth of the cleaning liquid 20 in which the filter 1 is immersed by changing the height of the loading-side shutter member 40 a or the unloading-side shutter member 40 b.

  The cleaning solution jet 3a jetted from the nozzle 30 is reflected on the liquid surface of the cleaning solution 20 and is incident at an angle close to perpendicular to the surface of the pleated filter medium 10, so that sub μm adhered to the fiber surface of the filter medium 10 The minute foreign matter can be peeled off from the fiber surface, and the peeled minute foreign matter can be pushed out of the filter medium 10 together with the cleaning solution jet 3a.

  When cleaning of the filter 1 is completed, the control device 8 stops the cleaning solution jet 3a from the nozzle 30, lowers the discharge side shutter member 40b to open the slit, and can carry the filter 1 out of the immersion container 2 Make it Then, the control device 8 operates the in-container conveyor 61 to carry out the filter 1 from the immersion container 2 to the unloading conveyor 62. When the second filter position detection means 71 detects the filter 1, the control device 8 drives the unloading conveyor 62. When the filter 1 completely passes the second filter position detection means 71, the control device 8 detects the passage of the filter 1 by the second filter position detection means 71, and stops the delivery conveyor 62. The filter cleaning device 110 can continuously clean the plurality of filters 1 by repeating these operations.

Third Embodiment
Next, a filter cleaning device 120 according to a third embodiment of the present invention will be described based on FIG. FIG. 11 is an explanatory view schematically showing a filter cleaning device according to Embodiment 3 of the present invention. In addition, about the same structure as the filter washing | cleaning apparatus 100 demonstrated in Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted suitably.

  The filter cleaning device 120 according to the third embodiment differs from the configuration of the filter cleaning device 100 according to the first embodiment in the configuration of the cleaning solution amount adjustment mechanism 5. Specifically, the cleaning solution amount adjusting mechanism 5 has a cleaning solution drain pipe 50, a displacement amount adjusting means 51, a liquid level detecting means 52, and a control device 53.

  The cleaning liquid drain pipe 50 is connected to the bottom surface of the immersion container 2 and drains the cleaning liquid 20 accumulated inside the immersion container 2 by the injection mechanism 3 to the outside. The cleaning liquid drain pipe 50 may be connected to the side surface of the immersion container 2.

  The drainage amount adjustment means 51 is a drainage pump attached to the cleaning liquid drainage pipe 50, and adjusts the amount of the cleaning liquid 20 drained through the cleaning liquid drainage pipe 50. The drainage amount adjustment means 51 is connected to the control device 53 by a signal line 51a. In addition to the drainage pump, the drainage amount adjustment means 51 may be configured by, for example, a solenoid valve or the like.

  The liquid level detection means 52 measures the liquid level height of the cleaning liquid 20 accumulated in the immersion container 2 by the cleaning liquid jet 3 a jetted from the nozzle 30. The liquid level detection means 52 is connected to the control device 53 by a signal line 52a.

  The control device 53 drives or stops the drainage amount adjustment means 51 based on the detection information detected by the liquid level detection means 52 to drain the cleaning liquid 20 through the cleaning liquid drainage pipe 50, and the liquid of the cleaning liquid 20 stored in the immersion container 2. The surface is controlled to achieve the target height.

  Next, a method of cleaning the filter using the filter cleaning device 120 according to Embodiment 3 will be described. The filter cleaning device 120 according to the third embodiment inputs the relationship between the liquid level of the cleaning liquid 20 of the immersion container 2 measured by the liquid level detection means 52 and the amount of drainage of the cleaning liquid 20 by the drainage amount adjustment means 51 to the control device 53. The level setting of the cleaning liquid 20 accumulated in the immersion container 2 can be adjusted by setting the setting.

  That is, when the liquid level of the cleaning liquid 20 accumulated in the immersion container 2 by the cleaning liquid jet 3a jetted from the nozzle 30 reaches the height set by the control device 53, the filter cleaning device 120 adjusts the drainage amount from the control device 53. A signal is sent to the means 51, and the drainage amount adjustment means 51 operates. The cleaning liquid 20 accumulated in the immersion container 2 is drained to the outside through the cleaning liquid drain pipe 50 by the operation of the drainage amount adjusting means 51. When the cleaning solution jet 3a ejected from the nozzle 30 is stopped in this state, the liquid level of the cleaning liquid 20 in the immersion container 2 is lowered, and the liquid level measured by the liquid level detection means 52 is higher than the setting value of the control device 53. Also lower. The control device 53 sends a signal for stopping the drainage amount adjustment means 51 when the liquid level of the cleaning liquid 20 accumulated in the immersion container 2 becomes lower than the set value. Therefore, the filter cleaning device 120 can keep the liquid level of the cleaning liquid 20 stored in the immersion container 2 constant.

  Therefore, also in the filter cleaning device 120 according to the third embodiment, the cleaning solution jet 3 a jetted from the nozzle 30 can be reflected by the liquid surface of the cleaning solution 20 and is applied to the surface of the filter medium 10 not immersed in the cleaning solution 20. Can. The reflected cleaning fluid jet 3a is incident on the surface of the filter medium 10 at an angle close to perpendicular to the surface of the filter medium 10, so the force of passing through the inside of the filter medium 10 and flowing out to the back side is large. That is, the filter cleaning device 120 can separate sub μm minute foreign matter collected on the fiber surface of the filter medium 10 from the fiber surface by the reflected cleaning solution jet 3a, and the separated fine foreign matter together with the cleaning solution jet 3a is the filter medium 10 Since it can be pushed out, the surface of the filter medium 10 can be effectively cleaned from the inside.

  Further, the filter cleaning device 120 adjusts the depth of the cleaning liquid 20 for immersing the filter 1 by the cleaning liquid amount adjusting mechanism 5, and the height at which the cleaning liquid jet 3 a jetted from the nozzle 30 is reflected by the liquid surface of the cleaning liquid 20. It can be changed. That is, the filter cleaning device 120 can cause the cleaning solution jet 3a to be incident at an angle close to perpendicular to the surface of the filter medium 10 at an arbitrary height inside the pleated shape, and foreign matter adhering to the fiber surface is effectively effective. Can be cleaned. Thus, the filter cleaning device 120 can effectively clean the entire area from the valley portion to the peak portion of the filter medium 10.

  Reference Signs List 1 filter 2 immersion container 3 injection mechanism 3a cleaning solution jet flow 4, 5 cleaning solution amount adjusting mechanism 6 transport mechanism 8 control device 10 filter medium 11 filter frame 20 cleaning solution 20 slit 31 nozzle 31 nozzle movement Mechanism, 40 shutter member, 40a loading side shutter member, 40b unloading side shutter member, 50 cleaning fluid drain piping, 51 drainage amount adjusting means, 51a signal line, 52 liquid level detecting means, 52a signal line, 53 control device, 60 loading conveyor, 61 conveyor in container, 62 unloading conveyor, 70 first filter position detecting means, 71 second filter position detecting means, 100, 110, 120 filter cleaning device.

Claims (8)

An immersion container for immersing a part of the filter having the filter medium folded in a pleated shape so that the crease is directed downward to the cleaning fluid stored inside;
An injection mechanism for injecting a cleaning solution jet onto the filter medium immersed in the cleaning solution of the immersion container;
And a cleaning solution amount adjusting mechanism configured to drain the cleaning solution accumulated inside the immersion container to adjust the amount of the cleaning solution. The immersion container is formed with a slit extending in the height direction,
The filter cleaning device according to claim 1, wherein the cleaning solution amount adjusting mechanism is a shutter member that closes the slit so as to open and close. The apparatus further comprises a transport mechanism that carries the filter into the interior of the immersion container and carries out the cleaned filter out of the immersion container.
The shutter member is capable of opening and closing a carrying-in side shutter member that closes the slit formed on the side for carrying the filter into the immersion container in an openable and closable manner, and the slit formed on the side for carrying the filter out of the immersion container. And a discharge side shutter member to be closed;
The transport mechanism drives the loading-side shutter member to open the slit, loads the filter into the interior of the immersion container, drives the unloading-side shutter member to open the slit, and cleaning The filter cleaning device according to claim 2, wherein the filter is carried out of the immersion container. The transport mechanism
First filter position detection means for detecting the filter carried into the interior of the immersion container;
Second filter position detection means for detecting the filter carried out of the immersion container;
A control device for driving the carry-in side shutter member on the basis of detection information of the first filter position detection means, and for driving the carry-out side shutter member on the basis of detection information of the second filter position detection means; The filter washing | cleaning apparatus of Claim 3 which has. The cleaning solution amount adjustment mechanism
A cleaning liquid drain pipe attached to the immersion container and draining the cleaning liquid accumulated inside the immersion container;
Drainage volume adjusting means attached to the cleaning fluid drainage pipe and adjusting the amount of cleaning fluid drained through the cleaning fluid drainage pipe;
Liquid level detection means for detecting the position of the liquid level of the cleaning liquid stored inside the immersion container;
The drainage amount adjusting means is adjusted based on the detection information detected by the liquid level detecting means, and the cleaning liquid is drained through the cleaning liquid drain pipe until the liquid level of the cleaning liquid stored inside the immersion container reaches a target position. The control apparatus according to claim 1, further comprising:   The filter washing device according to any one of claims 1 to 5 in which said injection mechanism has a plurality of nozzles arranged in parallel above the opening side of said immersion container.   The filter cleaning device according to claim 6, wherein the injection mechanism further includes a moving mechanism that moves the nozzle above the opening surface of the immersion container. A filter cleaning method using the filter cleaning device according to any one of claims 1 to 7, wherein
After a cleaning solution is stored inside the immersion container and a part of the filter having the filter medium folded in a pleated shape is immersed in the cleaning solution so that the crease is directed downward,
Injecting a cleaning solution jet onto the filter immersed in the cleaning solution of the immersion container by an injection mechanism;
The washing | cleaning method of the filter which drains the washing | cleaning liquid accumulated inside the said immersion container by injection of the said injection mechanism with a washing | cleaning-liquid amount adjustment mechanism, and adjusts a washing | cleaning-liquid amount.

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