JP2021089004A - Filter-incorporated joint - Google Patents

Abstract

To provide a filter-incorporated joint which allows the exchange of a filter without being removed from piping, and hardly causes the damage of the filter.SOLUTION: A filter-incorporated joint has: a joint main body having first and second flow-in/out parts, and having a communication space communicating with the flow-in/out parts therein; a filter element for purifying fluid flowing in the joint main body, and having a filter main body, and a cylindrical base end part in which a penetration hole for making an opening part of the filter main body, and the first flow-in/out part or the second flow-in/out part communicate with each other. A tool engagement part is arranged at a flange part of the base end part, a maintenance opening part communicating with the communication space is formed at the joint main body, and the maintenance opening part has a prescribed opening diameter so as to make a tool engaged with the tool engagement part by inserting the tool from the maintenance opening part, and to make the filter element attachable and detachable to/from the joint main body, and is arranged in a prescribed position.SELECTED DRAWING: Figure 1

Description

The present invention relates to a joint which is arranged in a flow path through which a high-pressure fluid such as hydrogen flows and has a built-in filter for removing impurities.

The use of high-pressure hydrogen gas is expanding for fuel cell vehicles and the like. For example, when supplying high-pressure hydrogen gas for a fuel cell at a hydrogen station or the like, if impurities are mixed in the gas, the fuel cell may be adversely affected. Therefore, the impurities in the hydrogen gas must be removed. Must be. It is necessary to install a filter device for removing impurities in the hydrogen gas piping flow path.

As a device for removing impurities from hydrogen gas, a joint having a filter built in the middle of the pipe described in Patent Document 1 is disclosed. The joint disclosed in Patent Document 1 is shown in FIG.

In the joint of FIG. 9, the body 110 has a pipe connecting portion 120 connecting to the pipe, and the cap 111 has a pipe connecting portion 130 connecting to the pipe, and is a joint arranged in the middle of the pipe. A cylindrical space portion 122 is formed inside the body 110, a filter element 113 having a bottomed portion 140 is arranged inside the cylindrical space portion 122, and the filter element 113 is connected to the holder 143 via a sealing mechanism 115. The holder 143 is provided with a through hole to communicate with the pipe connecting portion 120.

A flow path 128 communicating with the pipe is formed in the cap 111, and the cap 111 and the body 110 are screwed together. When the cap 111 is screwed in, the spring 114 provided on the right side of the cap 111 is compressed. The compression force pushes the filter element 113 to the right, and the O-ring between the holder 143 and the body 110 is compressed and sealed.

The filter built-in joint shown in FIG. 9 has two problems. The first problem is that the filter element 113 must be replaced regularly, but in order to replace the filter element 113, the joint must be removed from the pipe, which requires time and effort for regular maintenance. is there.

The second problem is that when the cap 111 is screwed in, the spring 111 also rotates with the rotation of the cap 111, so that a torsion torque is applied to the bottomed portion 140, the filter element 113 is twisted, and the filter element 113 is twisted. The problem is that it may be damaged.

An object of the present invention is to provide a joint with a built-in filter, which can be replaced without removing the joint from the pipe, and which does not apply torque that damages the filter when installing or removing the filter. is there.

The present invention (1) is a joint body including a first outflow port portion and a second outflow port portion connected to a pipe, and internally includes a communication space communicating with the first outflow port portion and the second outflow port portion. A filter element that is arranged in the joint body and the communication space to purify the fluid flowing through the joint body, and is a bottomed tubular filter body, an opening of the filter body, and the first outflow port portion. Alternatively, a cylinder having a through hole communicating with the second outflow port, one end being airtightly fixed to the opening of the filter body, and the other end being screwed to the inner circumference of the joint body to be airtightly joined. A filter built-in joint having a filter element having a shaped base end portion, wherein the base end portion is provided with a flange portion having a diameter larger than the diameter of the filter body, and the flange portion is provided with a flange portion having a diameter larger than that of the filter body. A tool engaging portion that engages with a tool for attaching or detaching the filter element to or from the joint body is provided, and the joint body further communicates with the communication space and is described as described above. A maintenance opening for inserting and removing the filter element is provided, and the maintenance opening is sealed during non-maintenance with a cap that is removed during maintenance, and a tool is inserted through the maintenance opening during maintenance. The maintenance opening has a predetermined opening diameter so that the tool engaging portion and the tool can be engaged and the filter element can be attached to or removed from the joint body. , A joint with a built-in filter, which is arranged at a predetermined position of the joint body.

The filter-embedded joint of the present invention (1) is characterized in that a maintenance opening is provided separately from the two outflow port portions (first outflow port portion and second outflow inlet portion) connected to the pipe. A filter element is attached to one of the two outflow inlets, and the filter element is composed of a bottomed tubular filter body and a base end portion, and the base end portion is connected to the joint body. .. A flange portion is provided at the base end portion, and a tool engaging portion used for attaching / detaching the filter element is formed on the flange portion. The maintenance opening is normally sealed with a sealing cap, but it is removed when the filter element is attached or detached, the tool is inserted through the maintenance opening, and the tool is connected to the tool engagement part. It is locked and the tool can be turned to attach and detach the filter element.

In this way, a maintenance opening is provided in the joint body, and a tool can be inserted through the maintenance opening to attach / detach the filter element. Therefore, it is not necessary to remove the joint from the pipe when attaching / detaching the filter element. , You can save time and effort. Further, since the base end portion is rotated when the filter element is attached or detached, torque is not applied to the filter body, and there is no risk of damage to the filter element.

The present invention (2) is the filter built-in joint of the present invention (1), wherein the tool engaging portion is provided with a plurality of tool engaging recesses for engaging with the tool.

In the present invention (2), since the tool engaging portion includes a plurality of tool engaging recesses, the tool need only have a plurality of convex portions that can be locked with these tool engaging recesses. Simple tools can be used.

The present invention (3) is the filter built-in joint of the present invention (1), wherein the tool engaging portion includes a plurality of tool engaging surfaces for engaging with the tool.

The plurality of tool engaging surfaces may be provided with a plurality of tool engaging surfaces, such as the shape of a hexagon bolt head, and the tool can be locked to these tool engaging surfaces. A simple one such as can be used.

The present invention (4) is a joint body including a first outflow port portion and a second outflow port portion connected to a pipe, and internally includes a communication space communicating with the first outflow port portion and the second outflow port portion. A filter element that is arranged in the joint body and the communication space to purify the fluid flowing through the joint body, and is a tubular filter body, one opening of the filter body, and the first outflow port portion. Alternatively, there is a first through hole that communicates with the second outflow port, one end is airtightly fixed to one opening of the filter body, and the other end is screwed to the inner circumference of the joint body to be airtight. The filter element is provided with a tubular base end portion to be joined, and the other opening of the filter body is provided with a tubular tip portion having a second through hole communicating with the communication space. In the filter built-in joint, the inside of the filter body and the outside of the filter body in the communication space are sealed by a sealing member, and the end portion of the base end portion on the tip end side is formed. A tool engaging portion that engages with a tool for attaching or detaching the filter element to or from the joint body is provided, and the joint body further communicates with the communication space and is described as described above. A maintenance opening for inserting and removing the filter element is provided, and the maintenance opening is sealed during non-maintenance with a cap that is removed during maintenance, and a tool is inserted through the maintenance opening during maintenance. The maintenance opening is provided so that the tool engaging portion can be engaged with the tool through the second through hole and the filter element can be attached to or removed from the joint body. It is a joint with a built-in filter that has an opening diameter and is arranged at a predetermined position on the joint body.

The difference between the present invention (4) and the present invention (1) is that in the present invention (1), the filter body has a bottomed tubular shape, whereas in the present invention (4), it has a tubular shape. is there. There is no difference in the structure of the base end portion between the present invention (4) and the present invention (1). In the present invention (4), the tip portion having the second through hole is provided at the end portion of the filter body on the side opposite to the base end portion. Therefore, the inside of the filter body and the outside of the filter body in the communication space are sealed by a sealing member.

In the present invention (4), the tool engaging portion is provided at the end of the base end portion inside the filter body, and when the filter element is attached or detached, the tool is inserted through the maintenance opening to obtain the first. The filter element can be attached / detached by locking it with the tool engaging portion through the two through holes. Compared to the present invention (1), when the communication space cannot be increased, a small tool can be inserted and engaged with the tool engaging portion to attach / detach the filter element. It can be made smaller.

In the present invention (5), the cap has a protruding portion that fits into the second through hole, and the sealing member is between an outer surface of the protruding portion and a surface that forms the second through hole. It is a joint with a built-in filter of the present invention (4) provided.

In the present invention (4), the inside of the filter body and the outside of the filter body in the communication space must be sealed by a sealing member, but in this sealing method, in the present invention (5), the cap is sealed. It is characterized in that it has a protruding portion to be fitted into the second through hole, and a sealing member is provided between the outer surface of the protruding portion and the surface forming the second through hole. By arranging such a sealing member, the inside of the filter main body and the outside of the filter main body in the communication space can be easily sealed and blocked.

The present invention (6) is the filter built-in joint of the present invention (4) in which the sealing member is provided between the outer surface of the tip portion and the surface forming the communication space.

In the present invention (4), the inside of the filter body and the outside of the filter body in the communication space must be sealed by a sealing member, but in this sealing method, in the present invention (6), the sealing member However, it is characterized in that it is provided between the outer surface of the tip portion and the surface forming the communication space. By arranging such a sealing member, the inside of the filter main body and the outside of the filter main body in the communication space can be easily sealed and blocked.

According to the filter built-in joint of the present invention, the filter can be attached / detached without removing the joint from the pipe, and further, damage at the time of attaching / detaching the filter element is less likely to occur.

A first embodiment of the filter built-in joint according to the present invention is shown. A second embodiment of the filter built-in joint according to the present invention is shown. A first embodiment of the base end portion provided in the filter built-in joint according to the present invention is shown. A second embodiment of the base end portion provided in the filter built-in joint according to the present invention is shown. A third embodiment of the base end portion provided in the filter built-in joint according to the present invention is shown. A third embodiment of the filter built-in joint according to the present invention is shown. A fourth embodiment of the base end portion provided in the filter built-in joint according to the present invention is shown. A fourth embodiment of the filter built-in joint according to the present invention is shown. The conventional joint with built-in filter is shown.

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the top and bottom refer to the top and bottom of the figure. This "up and down" is for convenience, and when installed, it may be upside down or horizontal.

FIG. 1 shows a first embodiment of a filter built-in joint according to the present invention. The joint body 20 of the filter built-in joint 10 includes a first outflow port portion 21 and a second outflow port portion 22, and these outflow port portions are connected to a pipe. A first female screw 21a at the outflow port and a female screw 22a at the second outflow port are used for connection with the pipe. A communication space 24 is formed inside the joint body 20, and the communication space 24, the first outflow port portion 21, and the second outflow port portion 22 are formed by the first communication passage 21b and the second communication passage 22b, respectively. Communicating.

The filter element 40 is arranged inside the communication space 24. The filter element 40 has a filter main body 41 made of a filter material, a base end through hole 42b in which the opening of the filter main body 41 and the second outflow port 22 communicate with each other, and one end is airtight at the opening of the filter main body 41. The inner circumference of the joint body 20 is provided with a tubular base end portion 42 which is hermetically fixed and the other end is screwed to the inner circumference of the joint body 20 to be airtightly joined.

A female thread 25 for installing a filter element is cut in the joint body 20, and the female thread 25 is screwed with a base end male thread 42c to install the filter element 40. A flange portion 42a having a diameter larger than the outer shape of the filter main body 41 is formed on the base end portion 42. A tool engaging portion 43 is formed on the flange portion 42a. A seal ring 42d is provided between the flange portion 42a and the joint body 20 to maintain airtightness.

The joint body 20 is further formed with a maintenance opening 23. The maintenance opening 23 has a female screw 23a for maintenance, and is screwed with a male screw 31 for a sealing cap 30 for sealing the maintenance opening 23 during non-maintenance. .. A seal ring 30a is arranged at the right tip of the cap 30 to prevent fluid from leaking.

At the time of maintenance, the cap 30 can be removed, a tool can be inserted through the maintenance opening 23, the tip of the tool can be locked to the tool engaging portion 43, and the tool can be rotated to attach / detach the filter element 40.

With such a structure, the filter element 40 can be attached and detached without removing the joint body 20 from the pipe, which saves time and effort. Further, since the tool engaging portion 43 of the base end portion 42 is used to rotate the filter body 41 at the time of attachment / detachment, unnecessary torque is not applied to the filter main body 41, and there is no risk of damage due to this torque.

FIG. 2 shows a second embodiment in which the first embodiment is slightly modified, but the changed point is that the filter main body 41 has a tubular shape instead of a bottomed tubular shape. Along with this change, a tip portion 44, which is a lid for sealing, is provided at the end portion on the opposite side of the base end portion. By making the filter main body 41 into such a shape, the manufacture of the filter main body 41 becomes simple.

3 and 4 show a base end portion 42 that can be used in the filter built-in joint 10 of the first and second embodiments. In the first embodiment of the base end portion 42 of FIG. 3, four tool engaging recesses 43a are formed in the joint engaging portion 43 of the flange portion 42a. The filter element 40 can be easily attached and detached by using a tool having a plurality of convex portions that engage with these tool engaging portions 43a.

In the second embodiment of the base end portion 42 of FIG. 4, six tool engaging surfaces 43b are formed on the joint engaging portion 43 of the flange portion 42a. The filter element 40 can be easily attached and detached by using a tool such as a hexagonal socket wrench that engages with these tool engaging surfaces 43b.

In the third embodiment of the base end portion 42 of FIG. 5, the outer diameter of the flange portion 42a is smaller than that of the first and second embodiments, and the joint engaging portion 43 has a plurality of peripheral surfaces (2 in this embodiment). It is composed of a notch groove portion 43c formed in the portion). Then, when attaching the filter element 40, a special tool 80 is used. The dedicated tool 80 has a protrusion holding portion 81 for rotating a tool by grasping it with a finger or a tool on one end side, and a protruding engaging portion 82 engaging with a groove 43c on the peripheral surface on the other end side. It is a bottomed tubular member. The communication space 24 inside the joint body 20 can be made smaller in diameter, and the filter built-in joint 10 can be miniaturized.

FIG. 6 shows a third embodiment of the filter built-in joint 10. The difference from the second embodiment is that, first, the tip portion 44 has a second through hole 44a. Secondly, the cap 30 is formed with a small diameter hole 32, a large diameter hole 34, and a tapered portion 33 connecting the small diameter hole 32 and the large diameter hole 34, and the small diameter portion 51, the large diameter portion 52, and the small diameter portion 51 are large in the tapered portion 33. An adapter 50 having a tapered portion 53 connecting the diameter portions 52 is penetrated, and a first protruding portion 54 and a second protruding portion 55 connected to the protruding portion are formed at the right end portion of the large diameter portion 52. The second protrusion 55 is fitted into the second through hole 44a, and an O-ring 55a is interposed between the second protrusion 55 and the peripheral wall forming the second through hole 44a to maintain airtightness. ing. The O-ring 55a serves as a sealing member for sealing the inside of the filter main body 41 and the outside of the filter main body 41 in the communication space 24. An O-ring 54a is interposed between the outer periphery of the first protrusion 54 and the peripheral wall forming the communication space 24, and is sealed so that the fluid does not leak from the joint body 20.

A first through hole 42b is formed in the base end portion 42 and communicates with the second communication passage 22b. Further, a tool engaging portion 43 is formed at the left end portion of the base end portion 42, and the tool engaging portion 43 is formed as a base portion hexagonal hole portion 42e. With such a structure, at the time of maintenance, the cap 30 is removed, a tool is inserted through the maintenance opening 23, the tool is passed through the second through hole 44a, and the tool engaging portion 43 is engaged with the base hexagonal hole portion 42e. The filter element 40 can be attached and detached by stopping the filter element 40.

With such a structure, the filter element 40 can be attached and detached without removing the joint body 20 from the pipe, which saves time and effort. Further, since the tool engaging portion 43 of the base end portion 42 is used to rotate the filter body 41 at the time of attachment / detachment, unnecessary torque is not applied to the filter main body 41, and there is no risk of damage due to this torque. Further, when the communication space cannot be increased as compared with Examples 1 and 2, a small tool can be inserted and engaged with the tool engaging portion to attach / detach the filter element 40. The joint body 20 can be made smaller.

FIG. 7 shows a fourth embodiment of the base end portion used in the third embodiment of the filter built-in joint.
A tool can be fitted into the hexagonal hole of the base hexagonal hole portion 42e, and the tool can be rotated to easily attach and detach the filter element 40.

FIG. 8 shows a slightly modified shape of the third embodiment of the filter built-in joint 10 of FIG. The change is that the protrusion 56 is not fitted into the second through hole 44a. As a result, the O-ring 44b is interposed between the outer periphery of the tip portion 44 and the peripheral wall forming the communication space 24 to maintain airtightness. The O-ring 44b serves as a sealing member for sealing the inside of the filter main body 41 and the outside of the filter main body 41 in the communication space 24. An O-ring 56a is interposed between the outer periphery of the protrusion 56 and the peripheral wall forming the communication space 24, and is sealed so that the fluid does not leak from the joint body 20.

In the first embodiment (FIG. 1), the second embodiment (FIG. 2), the third embodiment (FIG. 6), and the fourth embodiment (FIG. 8) of the filter built-in joint 10, all of the first outflow port portion. The direction of the 21 and the second outlet portion 22 is deviated by 90 °, and the flow path in the joint body 20 is L-shaped, but the present invention is not limited to this. For example, the first outflow port portion 21 and the second outflow port portion 22 may be arranged in parallel on the same surface, and the flow path may be U-shaped in the joint body 20, or the first outflow port portion 21 and the first outflow port portion 21. The direction may be less than 90 ° from the second outlet portion 22, and the flow path may be V-shaped in the joint body 20.

When used in a joint with a built-in filter according to the present invention, the filter can be attached and detached without separating the pipe and this joint, and it does not take time and effort, and unnecessary torque is not applied to the filter when attaching and detaching the filter. , No damage to the filter.

10: Joint 20: Joint body 21: First outflow port 21a: First outflow port female screw 21b: First connected passage 22: Second outflow port 22a: Second outflow port female screw 22b: Second connected passage 23 : Maintenance opening 23a: Maintenance opening female screw 24: Communication space 25: Filter element installation female screw 30: Cap 30a: Seal ring 31: Sealing cap Male screw 32: Small diameter hole 33: Tapered part 34: Large diameter hole 40 : Filter element 41: Filter body 42: Base end 42a: Flange 42b: Base end through hole, first through hole 42c: Base end male screw 42d: Seal ring 42e: Base hexagonal hole 43: Tool engagement Part 43a: Tool engaging recess 43b: Tool engaging surface 43c: Notch groove 44: Tip 44a: Second through hole 44b: O-ring 50: Adapter 51: Small diameter 52: Large diameter 53: Tapered 54: First protrusion 54a: O-ring 55: Second protrusion 55a: O-ring 56: Projection 80: Dedicated tool 81: Projection holding portion 82: Projection engaging portion

Claims (6)

A joint body including a first outflow port portion and a second outflow port portion connected to a pipe, and a joint body having an internal communication space communicating with the first outflow port portion and the second outflow port portion.
A filter element that is arranged in the communication space and purifies the fluid flowing through the joint body, and is a bottomed tubular filter body, an opening of the filter body, and a first outflow port or a second outflow. A tubular base end that has a through hole that communicates with the inlet, one end is airtightly fixed to the opening of the filter body, and the other end is screwed to the inner circumference of the joint body to be airtightly joined. A filter built-in joint having a filter element including a portion.
The base end portion is provided with a flange portion having a diameter larger than the diameter of the filter main body, and the flange portion is provided with a tool for attaching or removing the filter element to or from the joint main body. It has a tool engagement part to engage
The joint body is further provided with a maintenance opening for communicating with the communication space and for taking in and out the filter element, and the maintenance opening is sealed with a cap removed during maintenance during non-maintenance. At the time of maintenance, a tool is inserted through the maintenance opening to engage the tool with the tool engaging portion, and the filter element can be attached to or removed from the joint body. The maintenance opening is a joint with a built-in filter that has a predetermined opening diameter and is arranged at a predetermined position of the joint body. The filter built-in joint according to claim 1, wherein the tool engaging portion includes a plurality of tool engaging recesses for engaging with a tool. The filter built-in joint according to claim 1, wherein the tool engaging portion includes a plurality of tool engaging surfaces for engaging with a tool. A joint body including a first outflow port portion and a second outflow port portion connected to a pipe, and a joint body having an internal communication space communicating with the first outflow port portion and the second outflow port portion.
A filter element that is arranged in the communication space and purifies the fluid flowing through the joint body, and is a tubular filter body, one opening of the filter body, and the first outflow port or the second outflow. A cylinder that has a first through hole that communicates with the inlet, one end is airtightly fixed to one opening of the filter body, and the other end is screwed to the inner circumference of the joint body to be airtightly joined. A filter built-in joint comprising a filter element having a shaped base end and a tubular tip having a second through hole communicating with the communicating space in another opening of the filter body. There,
The inside of the filter body and the outside of the filter body in the communication space are sealed by a sealing member.
The end portion of the base end portion on the tip end side is provided with a tool engaging portion that engages with a tool for attaching or detaching the filter element to or from the joint body.
The joint body is further provided with a maintenance opening for communicating with the communication space and taking in and out the filter element, and the maintenance opening is sealed with a cap removed during maintenance during non-maintenance. At the time of maintenance, a tool is inserted through the maintenance opening, the tool engaging portion is engaged with the tool through the second through hole, and the filter element is attached to or removed from the joint body. The maintenance opening is a joint with a built-in filter which has a predetermined opening diameter and is arranged at a predetermined position of the joint body. 4. The cap has a protruding portion that fits into the second through hole, and the sealing member is provided between an outer surface of the protruding portion and a surface that forms the second through hole. Filter built-in fittings described in. The filter built-in joint according to claim 4, wherein the sealing member is provided between an outer surface of the tip portion and a surface forming the communication space.

Images