JP5571135B2 - Foreign matter removal device - Google Patents

Description

  The present invention relates to a foreign matter removing device, and more particularly to a foreign matter removing device that is installed between pipes and captures and removes foreign matters in a fluid flowing in the pipe.

  There is known a foreign matter removing apparatus that is installed in a pipe through which a gas or liquid such as gas or water flows as a fluid and removes solid components such as dust contained in the fluid as foreign matter.

  For example, in Patent Document 1, a plate-like flange as a pair of casings is attached to each end edge of two pipes to be connected, and a mesh-like filter medium is formed between these flanges in a planar shape. In this configuration, the stretched filter member is interposed by screwing. In this case, since the filter member and the flange can also be configured to be low in volume, there is an advantage that the entire apparatus can be reduced in thickness and the volume during storage and transportation is reduced. However, since the filter member is configured to be fastened to the flange by screwing, separate parts and tools are necessary, and it is troublesome to clean and replace the filter medium. In addition, since the filter member needs to be formed in a special shape that can be screwed to the flange, the versatility is low. There is a problem that the passage resistance of the is increased.

Patent Document 2 discloses a foreign matter removing apparatus having a configuration in which the fluid passage resistance does not increase even if the mesh of the filter medium is made fine.
In this case, the filter medium provided in the filter member is configured in a cylindrical shape, so that the effective area for capturing foreign substances is widened, and at the same time, the effective area through which the fluid can pass is also widened. Even if it is made fine, the passage resistance of the fluid does not increase. Thus, it is possible to achieve both high foreign matter removal performance and reduction of fluid passage resistance.

JP-A-62-171014 JP 2011-125792 A

  However, in the above-mentioned Patent Document 2, since the shape of the filter medium is previously formed in a three-dimensional shape such as a cylindrical shape, the filter member provided with this filter medium becomes bulky, and it is difficult to reduce the size of the entire apparatus. Moreover, since the filter medium is attached to the casing by screwing, the problem of troublesome cleaning or replacement of the filter medium is not solved.

  The present invention has been made in view of the above circumstances, and has an object to provide a foreign matter removing apparatus that has high foreign matter removal performance, can be stored and accommodated in a compact manner, and can be easily cleaned and replaced with a filter medium. And

The present invention taken to achieve the above object is a foreign matter removing apparatus that is installed in a fluid flow path to capture and remove foreign matter contained in the fluid,
A cylindrical casing to be connected to the flow path, a filter member accommodating portion provided in the cylindrical casing, and a filter member accommodated in the filter member accommodating portion,
The filter member is
An outer frame housed in an airtight state in the filter member housing portion;
At least one mesh-like filter medium stretched flat in the outer frame;
It is stored in a flat state in the outer frame when not in use and comprises a filter medium extending means that protrudes toward the filter medium when used and extends the filter medium in the flow path direction.
The filter medium is made of a flexible and stretchable material,
The filter medium extending means is capable of deforming in the direction of extending the filter medium and maintaining the deformed shape by operating an operation handle that protrudes outward through the outer frame. It is.

The above means operates as follows.
When not in use, the filter member has a mesh-like filter medium stretched in a flat shape in the outer frame and the filter medium extending means is stored in a flat state. ) Corresponds to the thickness of the entire filter member, and a thin filter member can be provided.
When in use, if the operating handle that protrudes outward from the outer frame is operated and the filter medium extending means is deformed so as to protrude toward the filter medium, the filter medium made of a flexible and stretchable mesh material is In response to the deformation of the filter medium extending means, the filter medium is deformed into a three-dimensional shape extending in the flow path direction of the pipe, and the deformed shape is held by the filter medium extending means.

In the foreign matter removing apparatus, preferably, the filter medium extending means has at least one leaf spring constructed so as to cross the inside of the outer frame,
The leaf spring is set to be elastically bent toward the filter medium by performing a pushing operation of pushing the operation handle inward of the outer frame.

  When the operation handle is pushed into the outer frame, the plate spring elastically deforms into a shape protruding toward the side on which the filter medium is stretched, so that the mesh filter medium is in accordance with the elastic deformation of the plate spring. It deforms into a three-dimensional shape protruding in the flow path direction.

In the foreign matter removing apparatus, preferably, an opening for taking in and out the filter member on a peripheral surface of the filter member housing portion is opened,
The operation handle has a claw projecting thereon, and an engaging projection that can be engaged with the claw when the pushing operation is completed is projected on the outer peripheral surface of the tubular casing near the opening of the filter member housing. It was to have installed.

  After the operation handle push-in operation is completed, the operation handle is held in a state in which the leaf spring is pushed in by engaging the claw portion of the operation handle with the engagement protrusion provided at a predetermined position on the outer peripheral surface of the cylindrical casing. The leaf spring is held in the shape after its elastic deformation.

In the foreign matter removing apparatus, preferably, the filter medium extending means has a shaft body in which a bulging portion is formed,
The shaft body is rotated in a direction in which the bulging portion bulges toward the filter medium by executing a rotation operation for rotating the operation handle.

  The bulging portion when not in use is stored in the outer frame, and the bulging portion may be, for example, an annular body or a part thereof. When the operating handle is operated and the shaft body is rotated, for example, 90 degrees from the state where the bulging portion is stored in the outer frame, the bulging portion protrudes in a direction perpendicular to the outer frame. As a result, the filter medium is pushed by the bulging portion and deformed into a three-dimensional shape that follows the bulging portion.

In the foreign matter removing apparatus, preferably, an opening for taking in and out the filter member on a peripheral surface of the filter member housing portion is opened,
The operation handle is provided with a claw portion, and an engaging protrusion that can be engaged with the claw portion when the rotation operation is completed is projected on the outer peripheral surface of the tubular casing near the opening of the filter member housing portion. It was to have installed.
When the operation handle is rotated 90 degrees, for example, the claw portion provided on the operation handle wraps around and engages with an engagement protrusion provided at a predetermined position on the outer peripheral surface of the cylindrical casing. The body is fixed in a state where the bulging portion protrudes from the outer frame at a right angle, and the three-dimensional shape of the filter medium is maintained.

As described above, according to the present invention, the filter member when not in use is in a state in which a flat filter medium is stretched in the outer frame and the flat filter medium extending means is stored. Furthermore, the entire cylindrical casing including the filter member can be configured to be relatively thin and compact, and can be stored or transported without being bulky.
The filter member is compact as described above when not in use. However, when the filter member is in use, the filter handle can be deformed and the filter medium can be extended into a three-dimensional shape by operating the operation handle. As a result, the area for allowing fluid to pass through increases and the area through which the fluid can pass is also increased, thereby providing a foreign matter removing apparatus that has both foreign matter capture efficiency and reduced passage resistance.

Since the filter member is only accommodated in the filter member accommodating portion provided in the cylindrical casing and is not screwed, the filter member can be easily attached to and detached from the cylindrical casing without using a tool or the like. Can be done. When cleaning or replacing the filter medium, the filter member can be easily extracted from between the cylindrical casings by operating the operation handle so that the filter medium extending means is stored in the outer frame. The filter member can be easily replaced.
Further, if the deformation of the filter medium extending means is held by operating the operation handle, the three-dimensional shape after the deformation of the filter medium is also held by the filter medium extending means. Thereby, a filter medium can be used with a three-dimensional shape over a long period, without returning to planar shape carelessly or deform | transforming with a fluid.

It is explanatory drawing before use of the foreign material removal apparatus which concerns on the 1st Embodiment of this invention. It is a side view at the time of non-use of the filter member employ | adopted as the foreign material removal apparatus which concerns on the 1st embodiment of this invention. It is explanatory drawing in use of the foreign material removal apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing before use of the foreign material removal apparatus which concerns on the 2nd Embodiment of this invention. It is a side view at the time of non-use of the filter member employ | adopted as the foreign material removal apparatus which concerns on the 2nd embodiment of this invention. It is explanatory drawing in use of the foreign material removal apparatus which concerns on the 2nd Embodiment of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a state in which the foreign matter removing apparatus according to the first embodiment of the present invention is provided between two pipes (31) and (32) to be connected. FIG. 6 is a side view of only the filter member (20).

The foreign matter removing apparatus of the present invention expands the diameter of the cylindrical casing (21) whose open ends on both sides are screwed to the respective edges of the pipes (31) and (32) and the central portion of the cylindrical casing (21). The filter member accommodating portion (22) and the filter member (20) accommodated in the filter member accommodating portion (22) via the O-ring (2), the filter member accommodating portion (22 ) Is formed with an opening (26) that opens to the side, and the filter member (20) is taken in and out of the opening (26).
The filter member (20) shown in the figure is in a state before use.
The fluid such as gas or water is set to flow from one pipe (31) through the filter member (20) toward the other pipe (32).

  As shown in FIGS. 1 and 2, the filter member (20) has two mesh filters (filter media) on the entire inner peripheral surface of the ring-shaped outer frame (1) having the same diameter as the cylindrical casing (21). 11) (12) is stretched in a plane with a predetermined interval in the flow path direction, and two leaf springs (2) as a filter medium extending means between these two mesh filters (11) (12) 10a) and (10b) are provided.

  As the reticulated filters (11) and (12), materials that have excellent filtration performance, are flexible and stretchable, and can be easily processed, such as a malt filter manufactured by Inoac Corporation, can be used.

The two leaf springs (10a) and (10b) are each made of a long and thin flat metal plate, and are slightly bent toward the mesh filter (11) and (12), respectively, excluding both ends, as shown in FIG. 2 and are arranged along the diameter of the outer frame (1) as shown in FIG.
One end of these leaf springs (10a) and (10b) is embedded and fixed at a predetermined position on the inner surface of the outer frame (1), and the other end is from a through hole (23) penetrating the outer frame (1). The outer frame (1) protrudes outward, and its tip is embedded in the central holding portion (15) of the operation handle (13) that is elongated in the flow path direction of the pipes (31) and (32). .

  Claw portions (14) projecting toward the cylindrical casing (21) side are formed on the upper surfaces of both ends in the longitudinal direction of the operation handle (13), and the corresponding cylindrical casing (21) corresponds to the claw portion (14). On the outer peripheral surface near the opening (26) of the filter member housing portion (22), the claw portion (14) is engaged in one-way engagement with the holding portion (15) being pushed into the through hole (23). A mating projection (24) is provided.

As shown in FIG. 1, the unused filter member (20) is configured such that the leaf springs (10a) (10b) and the mesh filters (11) (12) are stored in the outer frame (1). Therefore, the thickness of the filter member (20) corresponds to the thickness of the outer frame (1). Since the leaf springs (10a) and (10b) and the mesh filters (11) and (12) are substantially flat, the outer frame (1) can be made relatively thin and compact. Therefore, the bulk of the filter member (20) at the time of storage or distribution is low, and a large number of the filter members (20) can be stored.
Further, the cylindrical casing (21) does not need to be formed in any special shape, and may be any cylindrical body provided with female screw portions at both ends, so that it is easy to manufacture and highly versatile.

In order to use the foreign matter removing apparatus of the first embodiment, first, both ends of the cylindrical casing (21) are screwed into the end edges of the pipes (31) and (32), respectively, and the openings (26) are inserted. Then, the filter member (20) in a state in which the leaf springs (10a) (10b) and the mesh filters (11) (12) are stored is inserted into the filter member housing portion (22).
Since the O-ring (2) is provided on both end surfaces of the outer frame (1), the outer frame (1) is housed in an airtight state in the filter member housing portion (22).
At this time, the mesh filters (11) and (12) remain flat in the outer frame (1) (state shown in FIG. 1).

When the operating handle (13) is pushed toward the outer frame (1) from this state, the leaf springs (10a) and (10b) bent in advance so as to be convex outward are shown in FIG. Each of the mesh filters (11) and (12) made of a material rich in flexibility and stretchability is elastically deformed into a shape that curves greatly outward, and is stretched so as to be convex outward. And is transformed into a three-dimensional dome shape.
Then, as shown in the figure, if the holding portion (15) is pushed into the through hole (23) and at the same time the claw portion (14) is engaged with the engaging protrusion (24) in one way, the operation handle (13) Is in a state of retaining against the outer frame (1), and the leaf springs (10a) and (10b) are held in a deformed state in which the mesh filters (11) and (12) are extended. Since the O-ring (25) is provided on the inner peripheral surface of the through hole (23), the space between the holding portion (15) and the through hole (23) is maintained in an airtight state.

  The mesh filters (11) and (12) are expanded as shown in Fig. 3 to increase the surface area compared to the non-use state in which they are stretched flat in the outer frame (1) and capture foreign matter. As the area of the filter to be increased increases, the passage area of the fluid also increases, so that it is possible to simultaneously ensure the foreign matter capturing performance and reduce the passage resistance.

If foreign matter such as dust trapped on the mesh filters (11) and (12) accumulates and it becomes necessary to clean or replace the mesh filters (11) and (12), first the engagement of the claw portion (14) The engagement with the mating protrusion (24) is forcibly released, the holding portion (15) is removed from the through hole (23), and the operation handle (13) is separated from the outer frame (1). As a result, the leaf springs (10a) and (10b) elastically return to the original substantially flat state, and the mesh filters (11) and (12) elastically return to a flat shape.
In this state, if the filter member (20) is pulled out from the opening (26), the filter member (20) can be taken out from the filter member accommodating portion (22). As described above, since a tool or the like is not required for attaching / detaching the filter member (20), cleaning of the mesh filters (11), (12) or replacement work of the filter member (20) is facilitated.

  In the above-described embodiment, the two mesh filters (11) and (12) are provided as the filter medium, and the trapping of the foreign matter is performed by the duplex of the upstream mesh filter (11) and the downstream mesh filter (12). However, it is not always necessary to provide two filter media, and any one of the mesh filters (11) and (12) can be used. good.

  Further, the upstream mesh filter (11) and the downstream mesh filter (12) may have different mesh sizes. For example, if the mesh size of the upstream mesh filter (11) is set larger than the mesh size of the downstream mesh filter (12), a relatively large foreign matter is captured by the upstream mesh filter (11), Finer foreign matters are captured by the downstream mesh filter (12), and the lifetime of filter clogging can be extended.

FIG. 4 to FIG. 6 are explanatory diagrams of the second embodiment.
This is similar to the first embodiment in that the cylindrical casing (21) is screwed to the end edges of the pipes (31) and (32) and the filter member of the cylindrical casing (21) is accommodated. A filter member (30) in which two mesh filters (11) and (12) are stretched on an outer frame (1) is interposed in an airtight state in the section (22), and the mesh filters (11) and (12) ) As a filter medium extending means provided between them, a ring body (33) is provided instead of the leaf spring.

  As shown in FIG. 5, the ring body (33) is an annular frame body having an outer diameter smaller than the inner diameter of the outer frame (1), and an upper shaft (34) and a lower shaft are formed on an extension line of one diameter. The shaft (35) projects, the upper shaft (34) is fitted into the outer frame (1) from the inside, and the lower shaft (35) penetrates the outer frame (1) and projects outward.

An elongated operation handle (36) is provided at the protruding end of the lower shaft (35) at a right angle to the lower shaft (35) and in the diameter direction of the ring body (33). By rotating the frame (1) outside, the ring body (33) can rotate within the outer frame (1) with the upper shaft (34) and the lower shaft (35) as the rotation shaft. Become.
Also, between the operation handle (36) and the outer frame (1), the lower shaft is positioned so that the locking piece (37) parallel to the operation handle (36) is substantially in contact with the outer surface of the outer frame (1). The operation handle (36) is rotated 90 degrees on the outer peripheral surface of the cylindrical casing (21) in the vicinity of the opening (26) of the filter member housing (22). At this time, an engaging protrusion (27) having a substantially inverted L-shaped cross section is provided so that both ends of the locking piece (37) are fitted from the circumferential direction.

  As shown in FIG. 5, the filter member (30) set so that the outer frame (1) and the ring body (33) are positioned concentrically as shown in FIG. ) To be accommodated in the filter member accommodating portion (22), and then the operation handle (36) is rotated about 90 degrees. Then, the ring body (33) rotates with the locking piece (37) about the upper shaft (34) and the lower shaft (35) as the rotation shaft, and as shown in FIG. 6, the mesh filter (11) ( 12) is extended so as to protrude outwardly by the arcuate bulges on both sides of the ring body (33), and at the same time, both ends of the locking piece (37) are engaged with the engaging projections (27). The configuration is such that the operating handle (36) is maintained in the rotational posture by being fitted from the circumferential direction.

  Since the mesh filters (11) and (12) are extended by the ring body (33) and can increase the surface area, the foreign matter capturing area and fluid passage are the same as in the first embodiment. Both areas can be increased simultaneously.

  If the operating handle (36) is rotated 90 degrees in this direction from this state, the ring body (33) returns to the state stored in the outer frame (1) as shown in FIG. The member (30) can be removed by being removed from the opening (26) of the filter member accommodating portion (22).

  Also in this embodiment, it is not always necessary to provide two mesh filters as a filter medium, and only one of the upstream mesh filter (11) or the downstream mesh filter (12) may be provided.

  Further, the filter medium extending means is not limited to the annular body like the ring body (33), but may have other contour shapes such as a semicircular shape although not shown.

(1) ・ ・ ・ ・ ・ ・ ・ ・ Outer frame
(10a) (10b) ... Leaf spring (filter material extension means)
(11) (12) ・ ・ ・ ・ ・ ・ Mesh filter (filter material)
(13) ... Operating handle
(20) ... Filter members
(21) ... Cylindrical casing
(22) ... Filter member housing
(31) (32) ... Piping

Claims (5)

A foreign matter removing apparatus for capturing and removing foreign matter contained in the fluid installed in a fluid flow path,
A cylindrical casing to be connected to the flow path, a filter member accommodating portion provided in the cylindrical casing, and a filter member accommodated in the filter member accommodating portion,
The filter member is
An outer frame housed in an airtight state in the filter member housing portion;
At least one mesh-like filter medium stretched flat in the outer frame;
It is stored in a flat state in the outer frame when not in use and comprises a filter medium extending means that protrudes toward the filter medium when used and extends the filter medium in the flow path direction.
The filter medium is made of a flexible and stretchable material,
The filter medium extending means is capable of deforming in the direction of extending the filter medium and maintaining the deformed shape by operating an operation handle that protrudes outward through the outer frame. . The foreign matter removing apparatus according to claim 1, wherein the filter medium extending means has at least one leaf spring constructed so as to cross the inside of the outer frame,
The foreign matter removing apparatus in which the leaf spring is set to be elastically bent toward the filter medium by performing a pushing operation of pushing the operation handle inward of the outer frame. The foreign matter removing apparatus according to claim 2, wherein an opening for taking in and out the filter member on a peripheral surface of the filter member housing portion is opened,
The operation handle has a claw projecting thereon, and an engaging projection that can be engaged with the claw when the pushing operation is completed is projected on the outer peripheral surface of the tubular casing near the opening of the filter member housing. Foreign matter removal device installed. The foreign matter removing apparatus according to claim 1, wherein the filter medium extending means has a shaft body on which a bulging portion is formed,
A foreign matter removing apparatus configured to rotate the shaft body in a direction in which the bulging portion bulges toward the filter medium by executing a rotation operation of rotating the operation handle. The foreign matter removing apparatus according to claim 4, wherein an opening for inserting and removing the filter member on a peripheral surface of the filter member accommodating portion is opened.
The operation handle is provided with a claw portion, and an engaging protrusion that can be engaged with the claw portion when the rotation operation is completed is projected on the outer peripheral surface of the tubular casing near the opening of the filter member housing portion. Foreign matter removal device installed.

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