JP2006181403A - Water spray head - Google Patents

Abstract

A water spray head capable of cleaning and replacing a strainer while fixing the mounting angle of the water spray head to a water supply pipe is fixed.
A water spray head (1) for spraying water supplied from a water supply pipe (30) to a predetermined area, connected to the water supply pipe (30) and receiving a water supplied from the water supply pipe (30), The nozzle body 20 is connected to the head body 10 integrally or separately, and sprays water received by the head body 10 onto a predetermined area. The head body 10 is supplied with water from a water supply pipe 30. A strainer 50 for filtering water and a lid portion 40 that allows the strainer 50 to be attached to and detached from the head body 10 are provided. The lid 40 is disposed at a position different from the connection location between the water supply pipe 30 and the head body 10 and the connection location between the head body 10 and the nozzle portion 20.
[Selection] Figure 4

Description

  The present invention relates to a water spray head that is attached to, for example, a water supply pipe of a water spray facility installed in a tunnel and performs water spray.

  Conventionally, water spray equipment for suppressing fires, preventing fire spread, or extinguishing fires in various protection areas such as tunnels has been proposed. Such a water spray facility is generally configured to include a fire detector, a control device, a water storage tank, a pump, a water supply pipe, and a water spray head. When the fire detector senses that a fire has occurred in the protection area, an alarm signal is output from the fire detector to the control device. When the pump is started by this control device, the spray water stored in the water storage tank is pumped through the water supply pipe and sprayed to the protection area through the water spray head provided at the end of the water supply pipe. The

  Here, in order to efficiently spray the spray water over a wide protection area, the water discharge path inside the water spray head is configured to be very narrow for the purpose of increasing the water discharge pressure of the spray water. However, this water discharge route is likely to be clogged with dust mixed in the water for spraying, rust inside the water supply pipe, or welding debris when the water supply pipe is laid, which may hinder spraying activities. . Especially in outdoor equipment such as tunnels, rainwater is stored and used for spraying water, or water is drawn from nearby rivers and used, so there is a possibility that a lot of garbage is mixed in the spraying water. Measures against the clogging of garbage are demanded.

  For this reason, conventionally, a strainer is provided inside the water supply pipe, and various kinds of dust and the like in the spray water are removed by this strainer. For example, Patent Document 1 discloses that a strainer is provided inside a fire extinguishing pipe. According to such a configuration, various kinds of dust and the like in the spraying water can be removed by the strainer, and only the relatively clean spraying water is supplied to the water spraying head to prevent the water spraying head discharge path from being clogged in advance. Can be expected to do.

  Conventionally, a water spray head provided with a strainer has also been proposed. For example, Patent Document 2 discloses that a first strainer is provided in the primary inflow path and a second strainer is provided in the secondary inflow path inside the nozzle body of the fire-sprinkling water spray nozzle. According to such a configuration, even when spray water containing dust flows into the water spray head, the dust can be removed by the strainer inside the water spray head, so that the spray hole is prevented from being clogged in advance. I can expect that.

Japanese Patent Application Laid-Open No. 11-299920 JP 2001-137378 A

  Here, when a strainer is installed inside the water supply pipe, the water spray head is temporarily removed from the water supply pipe in order to remove the strainer from the water supply pipe during periodic inspections, etc. Without it, the strainer could not be removed. However, the mounting angle of the water spray head with respect to the water supply pipe is adjusted so that the water for spraying can be sprayed in an optimum state with respect to the protection area. It was necessary to readjust the angle, which required much labor for regular inspections. In addition, it is conceivable that a flange is provided on the water supply pipe so that the water spray head is not required to be removed, and the strainer can be taken out via this flange. Therefore, there is a new problem that the efficiency of the inspection work is lowered because the work is performed separately from the periodic inspection work centered on the water spray head. Also, with this configuration, there is a problem that the number of parts increases, and if there is dust between the strainer and the water spray head, it cannot be removed, and clogging of the water spray head cannot be prevented. It was.

  Further, when a strainer is provided inside the water spray head, the strainer cannot be attached to and detached from the water spray head in the conventional configuration. Therefore, when it is desired to clean the strainer, it is necessary to replace the entire water spray head, which has been a factor in improving the maintenance cost of the water spray equipment. Alternatively, even when the strainer is detachable from the water spray head, the strainer is configured to be removed via a connection screw portion for connecting the water spray head to the water supply pipe. For this reason, in order to clean the strainer, it is necessary to remove the water spray head from the water supply pipe after all. Adjust the mounting angle of the water spray head to the water supply pipe as in the case where the strainer is installed inside the water supply pipe. It was necessary to do.

  This invention is made in view of the above, Comprising: It aims at providing the water spray head which can perform a cleaning, replacement | exchange, etc. of a strainer, fixing the attachment angle of the water spray head with respect to water supply piping. To do.

  In order to solve the above-described problems and achieve the object, the present invention according to claim 1 is a water spray head that is connected to a water supply pipe and sprays water supplied from the water supply pipe onto a predetermined area. A head main body that is connected to the water supply pipe and receives water supplied from the water supply pipe; and a head body that is integrally or separately connected to the head main body, and the water received by the head main body is supplied to the predetermined area. A nozzle section for spraying, and the head body is provided with a filtering means for filtering water supplied from the water supply pipe, and an attaching / detaching means for making the filtering means detachable from the head body. The attachment / detachment means is arranged at a position different from a connection location between the water supply pipe and the head main body and a connection location between the head main body and the nozzle portion. .

  Further, according to the present invention of claim 2, in the present invention of claim 1, the head main body includes a primary side connection port for connecting the head main body to the water supply pipe, and the head main body. A secondary side connection port for connecting the nozzle part and a replacement connection port for allowing the filtering means to be taken in and out of the head main body are provided at different positions.

  According to a third aspect of the present invention, in the present invention according to the second aspect, the detachable means is detachably provided to the replacement connection port in order to seal the replacement connection port. It is characterized by being a covered lid part.

  According to a fourth aspect of the present invention, in the present invention of the second or third aspect, the primary side connection port or the secondary side connection port and the replacement connection port are substantially identical to each other. Arranged on a line, between the water supply pipe and the primary side connection port, or between the secondary side connection port and the nozzle portion, and between the replacement connection port and the lid portion. A screw fixing direction between the water supply pipe and the primary side connection port, or a screw fixing direction between the secondary side connection port and the nozzle portion, and The screw fixing direction between the replacement connection port and the lid portion is opposite to each other.

  In addition, the present invention described in claim 5 is characterized in that, in the present invention described in any one of claims 1 to 4, the filtering means is fixed to the attaching / detaching means.

  According to the water spray head of the present invention, the filtering means can be removed from the head body via the attaching / detaching means, and the filtering means can be easily cleaned and replaced. In particular, the attachment / detachment means is disposed at a different position from the connection portion between the water supply pipe and the head body and the connection portion between the head body and the nozzle portion. Since the attaching / detaching operation of the filtering means to be performed does not directly affect each of these connection points, the mounting angle between the water supply pipe and the head body, and between the head body and the nozzle part The filtering means can be cleaned or replaced while maintaining the mounting angle in an optimum state, and readjustment of the mounting angle is not required, and inspection work and the like can be performed more efficiently.

  Further, according to the water spray head according to the present invention, the screw fixing direction between the water supply pipe and the primary side connection port, or the screw fixing direction between the secondary side connection port and the nozzle portion, can be exchanged. Since the screw fixing direction between the connection port and the lid is opposite to each other, even if a large force is applied to remove the lid when removing the lid, the head body and the water supply pipe And the mounting angle between the head main body and the nozzle portion can be maintained in an optimum state.

  Further, according to the water spray head according to the present invention, since the filtering means is fixed to the attachment / detachment means, the filtration means can be attached / detached along with the attachment / detachment of the attachment / detachment means from the water spray head. It becomes easier.

  Hereinafter, embodiments of a water spray head according to the present invention will be described in detail with reference to the accompanying drawings. First, [I] the basic concept of the present invention will be described, then [II] each embodiment of the present invention will be described, and [III] Finally, modifications to each embodiment of the present invention will be described.

[I] Basic concept of the present invention First, the basic concept of the present invention will be described. The present invention relates to a water spray head that is connected to a water supply pipe and sprays water supplied from the water supply pipe onto a predetermined area. Here, the specific contents of the predetermined area and the purpose of water spraying are arbitrary, for example, when water is sprayed to suppress fire, prevent the spread of fire, or to extinguish a fire in a protective zone such as the inside of a tunnel. Including the case of spraying water to supply crops on the farm. In addition, the specific name and use form of the water spray head are also arbitrary according to this, for example, the water spray head is configured as a water spray head in a water spray facility inside a tunnel or a sprinkler head in an indoor water spray facility. can do.

  Under such a premise, the water spray head according to the present invention is connected to a water supply pipe, receives a water supplied from the water supply pipe, and is connected to the head body integrally or separately. And a nozzle portion for spraying the water received in a predetermined area, and a filtering means is provided inside the head body. Therefore, even when the water supplied to the water spray head via the water supply pipe contains dust, the dust is filtered by the filtering means, so that clogging of dust inside the water spray head can be prevented.

  The water spray head is provided with attachment / detachment means for making the filtration means detachable with respect to the water spray head so that the filtration means can be cleaned and replaced at the time of periodic inspection. In particular, this attachment / detachment means is disposed at a different position from the connection location between the water supply pipe and the head main body, which will be described later, and the connection location between the head main body and the nozzle portion. Therefore, when attaching / detaching the filtering means via the attaching / detaching means, the connection relationship between the water supply pipe and the head main body and the connection relationship between the head main body and the nozzle section are kept constant without change. it can. For this reason, since the angle from the water supply pipe to the nozzle portion via the head body can be maintained constant, the water spray angle can be maintained, and it is not necessary to readjust the water spray angle even when the filtering means is replaced.

  Furthermore, in the present invention, various measures are taken to maintain the water spray angle as described above or to improve the exchangeability of the filtering means. These devices will be described in detail in the following embodiments.

[II] Each Embodiment of the Present Invention Each embodiment of the water spray head according to the present invention will be described below.

[Embodiment 1]
First, the first embodiment will be described. The water spray head according to the first embodiment includes (1) a filtering means for filtering water on the head body of the water spraying head and an attaching / detaching means for making the filtering means detachable from the head body. Points provided, (2) Primary connection port, secondary connection port, and replacement connection port provided at different positions, (3) Lid can be attached to and removed from the replacement connection port (4) The screw fixing direction between the water supply pipe and the primary side connection port and the screw fixing direction between the replacement connection port and the lid are opposite to each other. And (5) The point that a rectifying path is provided in the nozzle portion, and the like are part of the main features.

  1 is a side view of a water spray head according to Embodiment 1, FIG. 2 is a front view of the water spray head of FIG. 1, and FIG. 3 is a side view of the water spray head of FIG. 4 is a cross-sectional view taken along line AA of FIG. 2, and FIG. 5 is an exploded view of the water spray head shown in FIG. In the following description, each direction related to the water spray head is defined as the X direction, the Y direction, and the Z direction shown in FIGS. 1 to 3, and the X direction is defined as the water discharge direction and the Y direction as necessary. Is referred to as the water entry direction, and the Z direction as the height direction or the vertical direction.

  As shown in FIGS. 1 to 3, the water spray head 1 is configured by connecting two nozzle portions 20 and 21 to the head body 10. Among these, the head main body 10 is connected to a water supply pipe 30 (shown by an imaginary line in the drawing) and receives water supplied from the water supply pipe 30.

  Specifically, as shown in FIGS. 4 and 5, the head main body 10 is formed into a hollow short tube as a whole, and openings 11 and 12 are formed at both ends in the water inlet direction, respectively. . As shown in FIG. 5, screw grooves 13 and 14 are formed at the inner edges of the openings 11 and 12, and a water supply pipe 30 or a lid 40 described later is screwed into the screw grooves 13 and 14. As a result, the water supply pipe 30 or the lid 40 and the head body 10 are connected to each other. That is, the opening 11 and the opening 12 correspond to the primary side connection port and the replacement connection port in the claims, respectively.

  In addition, two openings 15 are formed at a substantially central position of the head body 10 in the water inlet direction (one opening 15 is not shown). A screw groove 16 is formed on the inner edge of the opening 15, and one end of the nozzle parts 20, 21 is screwed into the screw groove 16, whereby the nozzle parts 20, 21 and the head body 10 are connected to each other. Is done. That is, the opening 15 corresponds to the secondary side connection port in the claims.

  The nozzle portions 20 and 21 are for spraying water received by the head body 10 onto the predetermined area. As shown in FIG. 5, the nozzle portions 20 and 21 are formed into a hollow short tube as a whole, and openings 22 and 23 are formed at both ends in the water discharge direction, respectively. A screw groove 24 for connection to the head main body 10 is formed on the outer periphery of the end on the head main body 10 side of both ends of the nozzle portions 20 and 21. Moreover, the opening part 23 of the nozzle parts 20 and 21 functions as a nozzle hole. In the following description, only the nozzle portion 20 will be described, but the same applies to the nozzle portion 21 except for a case where special mention is made.

  In addition, a rectifying path 25 is formed inside the nozzle portion 20. This rectification path 25 is a flow path having a smaller diameter than the inner diameters of the openings 22 and 23 of the nozzle portion 20 and increases the speed while rectifying the water flowing into the nozzle portion 20. The flow rate of the water discharged from 23 can be improved.

  Here, a strainer 50 is accommodated in the internal space of the head body 10. The strainer 50 is for filtering the water supplied from the water supply pipe 30 and corresponds to the filtering means in the claims. Specifically, the strainer 50 is configured in a generally hollow cylindrical shape as a whole, and substantially the entire side wall thereof is formed in a mesh shape. When water passes through the side wall and reaches the nozzle unit 20, Various kinds of dust contained in the water are removed. In particular, in the first embodiment, since the strainer 50 is provided on the upstream side of the rectifying path 25 provided in the nozzle portion 20, the rectifying path 25 can be prevented from being clogged with dust or the like. Although the raw material which forms the side wall of this strainer 50 is arbitrary, it can be comprised with the net body by a metal, a synthetic resin, or a synthetic fiber, for example.

  Further, a lid 40 is provided in the opening 12 which is the exchange side connection port of the head body 10. The lid portion 40 is for making the strainer 50 detachable from the head body 10 and constitutes attachment / detachment means in the claims. Specifically, the lid portion 40 is configured as a substantially disc body having a slightly larger diameter than the opening portion 12, and an extending portion 41 that extends toward the opening portion 12 is provided on one side surface thereof. ing. A screw groove 42 is formed on the outer periphery of the extending portion 41, and the lid portion 40 is attached to the head body 10 by screwing the screw groove 42 into the screw groove 14 on the inner edge of the opening 12. be able to. Therefore, since the strainer 50 can be attached to and detached from the head main body 10 with the lid 40 removed from the head main body 10, the strainer 50 can be easily cleaned and replaced during periodic inspections. A packing 43 is provided between the lid 40 and the head body 10 to ensure waterproofness.

  Here, as shown in FIG. 4, the lid 40 includes an opening 11 as a primary side connection port, an opening 15 as a secondary side connection port, and an opening 12 as a replacement connection port. Are provided at different positions. That is, in the water spray head described in Patent Document 2 described above, the primary side connection port also serves as a replacement connection port, whereas in the first embodiment, each of these openings 11, 12, 15 are provided at positions that do not overlap each other. Therefore, when the strainer 50 is attached to or detached from the head body 10, the opening 11 that is the primary connection port or the opening 15 that is the secondary connection port is opened even if the lid 40 is removed and the opening 12 is opened. Therefore, the mounting angle of the head main body 10 with respect to the water supply pipe 30 and the mounting angle of the nozzle portion 20 with respect to the head main body 10 are not affected.

  Moreover, in this Embodiment 1, the opening part 11 which is a primary side connection port, and the opening part 12 which is a connection port for replacement | exchange are arrange | positioned on the substantially the same straight line mutually in the inflow direction. Therefore, when the lid portion 40 is rotated to remove the lid portion 40 from the head main body 10, this rotational force may adversely affect the fastening force between the head main body 10 and the water supply pipe 30. In order to prevent such a problem, in the first embodiment, the screwing direction (A direction shown in FIG. 5) when the lid 40 is screwed to the head main body 10 is the same as the water supply pipe 30. The screw grooves 13, 14, and 42 (and the screw grooves at the end of the water supply pipe 30) of these parts are opposite to the screwing direction (the B direction shown in FIG. 5) when screwing to the water supply pipe 30. Is formed. For example, from the lid 40 toward the water supply pipe 30, the A direction is counterclockwise and the B direction is clockwise. Of course, the screwing direction when removing the lid 40 from the head main body 10 (the direction opposite to the A direction, hereinafter referred to as the A ′ direction) is the screwing when the head main body 10 is removed from the water supply pipe 30. The direction is opposite to the direction (the direction opposite to the B direction, hereinafter referred to as the B ′ direction). For example, the A ′ direction is clockwise and the B ′ direction is counterclockwise from the lid 40 toward the water supply pipe 30.

  Therefore, when removing the lid 40 from the head main body 10 fixed to the water supply pipe 30, the lid 40 can be removed by rotating the lid 40 clockwise. Since this is the direction in which 10 is fixed to the water supply pipe 30, the mutual fixing of the head body 10 and the water supply pipe 30 is not loosened. Therefore, when the lid 40 is removed after a long time after the lid 40 is attached, the lid 40 is removed when the lid 40 is fixed to the head body 10 due to rust or the like. Therefore, even if a large force is applied, the mounting angle between the head main body 10 and the water supply pipe 30 can be maintained. In addition, in the case where a larger force is applied at the time of attaching the lid portion 40 than when the lid portion 40 is removed, the A direction and the B direction (or the A ′ direction and the B ′ direction) are reversed, as described above. You may make it mutually the same.

  As described above, according to the first embodiment, since the strainer 50 is provided on the upstream side of the nozzle portion 20 having the rectifying path 25, the rectifying path 25 can be prevented from being clogged with dust or the like. Further, by removing the lid 40 from the head main body 10, the strainer 50 can be easily cleaned or replaced at the time of periodic inspection or the like. In particular, even if the lid 40 is removed and the opening 12 is opened, there is no need to open the opening 11 that is the primary side connection port or the opening 15 that is the secondary side connection port. The optimal water spray angle can be maintained without affecting the mounting angle of the main body 10 and the mounting angle of the nozzle portion 20 with respect to the head main body 10. Even when a large force is applied to remove the lid 40 when the lid 40 is removed, the mounting angle between the head body 10 and the water supply pipe 30 can be maintained.

[Embodiment 2]
Next, a second embodiment will be described. In the second embodiment, the primary side connection port and the secondary side connection port are arranged on a non-identical straight line in that the primary side connection port and the secondary side connection port are arranged on substantially the same straight line. Different from Form 1. However, the configuration that is not particularly described is the same as that of the first embodiment, and the configuration that is substantially the same as that of the first embodiment is given the same name as that used in the description of the first embodiment, if necessary. Or a reference is attached. In addition, each direction related to the water spray head in the second embodiment is also defined in the same manner as in the first embodiment.

  6 is a front view of the water spray head according to Embodiment 2, and FIG. 7 is a cross-sectional view of the water spray head taken along the line BB in FIG. As shown in these drawings, the water spray head 60 is configured by connecting two nozzle portions 80 and 81 to a head main body 70. In the following description, only the nozzle portion 80 will be described, but the same applies to the nozzle portion 81 except for a case where special mention is made.

  Here, openings 71 and 72 are formed at both ends of the head main body 70 in the water inlet direction, respectively. Of these, one opening 71 is connected to the water supply pipe 30 and corresponds to the primary side connection port in the claims. The other opening 72 is connected to the nozzle portion 80 and corresponds to the secondary side connection port in the claims. In addition, two openings 73 and 74 are formed at a substantially central position of the head body 70 in the water inlet direction (only one opening 74 is shown in FIG. 7). Among these, the opening part 73 is connected to the nozzle part 81 and corresponds to the secondary side connection port in the claims. The other opening 74 allows the strainer 90 to be inserted into and removed from the head main body 70, and corresponds to the replacement connection port in the claims.

  Here, a strainer 90 is accommodated in the internal space of the head main body 70. The strainer 90 is for filtering the water supplied from the water supply pipe 30 and corresponds to the filtering means in the claims. Specifically, the strainer 90 is formed in a substantially hollow cylindrical shape as a whole, and the surface facing the opening 71 is opened, and the surface facing the opening 72 is also provided with a net-like side wall. When the water supplied from the water supply pipe 30 flows from the opening 71 and reaches the opening 72, dust and the like contained in the water are removed by the side wall.

  The lid 40 is screwed to the opening 74 with a screw. The lid portion 40 is for making the strainer 90 detachable from the head main body 70, and constitutes attachment / detachment means in the claims. Therefore, since the strainer 90 can be attached to and detached from the head main body 70 in a state where the lid 40 is removed from the head main body 70, the strainer 90 can be easily cleaned and replaced during periodic inspections.

  Here, as in the first embodiment, the opening 71 as the primary connection port, the opening 72 as the secondary connection port, and the opening 74 as the replacement connection port are located at different positions. Is provided. Therefore, when the strainer 90 is attached to and detached from the head main body 70, the opening 71 that is the primary side connection port and the opening 72 that is the secondary side connection port are opened even if the lid 40 is removed and the opening 74 is opened. Therefore, the mounting angle of the head main body 70 with respect to the water supply pipe 30 and the mounting angle of the nozzle portion 80 with respect to the head main body 70 are not affected.

  Further, in the second embodiment, unlike the first embodiment, the opening 71 that is the primary side connection port and the opening 72 that is the secondary side connection port are substantially collinear with each other in the water inlet direction. On the other hand, the opening 74 which is a connection port for replacement is arranged substantially non-linearly with respect to the opening 71 and the opening 72. Therefore, even if the lid portion 40 is rotated in order to remove the lid portion from the head main body 70, this rotational force can be applied to the fastening force between the water supply pipe 30 and the head main body 70 or the fastening force between the head main body 70 and the nozzle portion 80. Therefore, even if a large force is applied to remove the lid portion 40, the mounting angle between the water supply pipe 30 and the head main body 70, the head main body 70, and the nozzle portion 80 are not affected. The installation angle between each other can be maintained.

  As described above, according to the second embodiment, in addition to the same effects as those of the first embodiment, the primary side connection port, the secondary side connection port, and the replacement connection port are arranged substantially non-linearly. Therefore, the spray angle can be more easily maintained.

[Embodiment 3]
Next, Embodiment 3 will be described. The third embodiment is different from the first embodiment in which the strainer is attached / detached parallel to the water entry direction in that the strainer attachment / detachment direction is not parallel to the water entry / exit direction or the water discharge direction. However, the configuration that is not particularly described is the same as that of the first embodiment, and the configuration that is substantially the same as that of the first embodiment is given the same name as that used in the description of the first embodiment, if necessary. Or a reference is attached. In addition, each direction related to the water spray head in the third embodiment is also defined in the same manner as in the first embodiment.

  8 is a side view of the water spray head according to Embodiment 3, FIG. 9 is a front view of the water spray head of FIG. 8, and FIG. 10 is a cross-sectional view taken along the line CC in FIG. As shown in these drawings, the water spray head 100 is configured by connecting two nozzle portions 120 and 121 to a head main body 110. In the following description, only the nozzle portion 120 will be described, but the same applies to the nozzle portion 121 except for a case where special mention is made.

  Here, an opening 111 (illustrated by a dotted line in FIG. 9) is formed at one end of the head body 110 in the water inlet direction. The opening 111 is connected to the water supply pipe 30 and corresponds to the primary side connection port in the claims. As shown in FIG. 10, two openings 112 are formed at a substantially central position in the water inlet direction of the head main body 110. The nozzle portions 120 and 121 and the head main body 110 are connected to each other by screwing one end of the nozzle portions 120 and 121 into each opening 112. That is, the opening 112 corresponds to the secondary side connection port in the claims. In addition, an opening 113 is formed in the head main body 110. The opening 113 is an opening for replacing a strainer 130 described later, and corresponds to a replacement connection port in the claims.

  A strainer 130 is accommodated in the internal space of the head main body 110. The strainer 130 is for filtering the water supplied from the water supply pipe 30 and corresponds to the filtering means in the claims. Specifically, the strainer 130 is formed in a substantially hollow cylindrical shape as a whole, and is configured so that only the surface facing the opening 111 is open, and water supplied from the water supply pipe 30 flows into the opening 111. Then, when reaching the opening 112, dust and the like contained in the water are removed by the side wall.

  Further, the lid portion 40 is screwed to the opening 113 with a screw. The lid portion 40 is for making the strainer 130 detachable from the head main body 110, and constitutes attachment / detachment means in the claims. Accordingly, since the strainer 130 can be attached to and detached from the head main body 110 with the lid 40 removed from the head main body 110, the strainer 130 can be easily cleaned and replaced during periodic inspections.

  Here, as in the first embodiment, the opening 111 as the primary connection port, the opening 112 as the secondary connection port, and the opening 113 as the replacement connection port are located at different positions. Is provided. Therefore, when the strainer 130 is attached to and detached from the head main body 110, the opening 111 that is the primary side connection port and the opening 112 that is the secondary side connection port are opened even if the lid 40 is removed and the opening 113 is opened. Therefore, the attachment angle of the head main body 110 with respect to the water supply pipe 30 and the attachment angle of the nozzle portion 120 with respect to the head main body 110 are not affected.

  Moreover, in this Embodiment 3, unlike Embodiment 1, the attachment / detachment direction of the strainer 130 is made non-parallel with respect to the entrance / exit direction and the water discharge direction. That is, as shown in FIG. 10, the attaching / detaching direction of the strainer 130 is an oblique direction shown in the drawing. Therefore, even if the lid portion 40 is rotated in order to remove the lid portion from the head main body 110, this rotational force can be applied to the fastening force between the water supply pipe 30 and the head main body 110 or the fastening force between the head main body 110 and the nozzle portion 120. Therefore, even if a large force is applied to remove the lid portion 40, the mounting angle between the water supply pipe 30 and the head main body 110, the head main body 110, and the nozzle portion 120 are not affected. The installation angle between each other can be maintained.

  Thus, according to the third embodiment, in addition to the same effects as those of the first embodiment, the strainer attachment / detachment direction is made non-parallel to the entry / exit direction and the water discharge direction, so that the spray angle is more easily maintained. can do.

[III] Modifications to Embodiments Although the embodiments of the present invention have been described above, the specific configuration and method of the present invention are within the scope of the technical idea of each invention described in the claims. Can be arbitrarily modified and improved. Hereinafter, such a modification will be described.

(Applicable items)
The specific purpose and structure of the water spray head to which the present invention is applied can be arbitrarily modified. For example, in each of the above embodiments, the nozzle portion is detachable from the head body, but both may be fixed integrally.

(About attachment / detachment means)
First, the structure of the attaching / detaching means may be any structure as long as the strainer can be freely attached to and detached from the head main body. It may be formed in a shape and fixed to the head main body with a bolt or the like in the vicinity of each corner. Alternatively, it is preferable that attachment / detachment by the attachment / detachment means does not affect the attachment angle. Therefore, even if the attachment / detachment means is fixed to the head body using a non-rotating fastening structure, for example, a clamp structure by a spring. good. In addition, by fixing the strainer to the lid portion 40, when the lid portion 40 is detached from the head main body, the strainer may be attached or detached accordingly. In this case, it becomes easier to attach and detach the strainer during inspection. Although this fixing structure is arbitrary, for example, it is possible to replace only the strainer by screwing and fixing the strainer and the lid portion 40, or by welding and fixing the strainer and the lid portion 40. The lid 40 may be exchanged together.

(About problems to be solved and effects of the invention)
In addition, the problems to be solved by the present invention and the effects of the invention are not limited to the contents described above, and the present invention solves the problems not described above or effects not described above. In some cases, only a part of the described problems can be solved, or only a part of the described effects can be achieved. For example, even when the mounting angle cannot be completely maintained, the object of the present invention is achieved as long as the degree and frequency of the mounting angle shift can be reduced even slightly.

  In addition, the structural examples shown in the document and drawings, the dimensional relationship and positional relationship of each part, the thickness, etc. are merely examples, and can be arbitrarily changed unless otherwise specified.

  As described above, the water spray head according to the present invention is useful for reducing the mounting angle with respect to the water supply pipe and performing the strainer inspection work in a short time.

2 is a side view of the water spray head according to Embodiment 1. FIG. It is a front view of the water spray head of FIG. It is the side view which looked at the water spray head of FIG. 1 from the other side. It is AA arrow sectional drawing of FIG. FIG. 5 is an exploded view of the water spray head shown in FIG. 4. 6 is a front view of a water spray head according to Embodiment 2. FIG. It is BB arrow sectional drawing of the water spray head of FIG. 6 is a side view of a water spray head according to Embodiment 3. FIG. It is a front view of the water spray head of FIG. It is CC sectional view taken on the line of FIG.

Explanation of symbols

1, 60, 100 Water spray head 10, 70, 110 Head body 11, 12, 15, 22, 23, 71, 72, 74, 111, 112, 113 Opening 13, 14, 16, 24 Thread groove 20, 21 , 80, 81, 120, 121 Nozzle part 25 Rectification path 30 Water supply piping 40 Lid part 50, 90, 130 Strainer

Claims (5)

A water spray head connected to a water supply pipe for spraying water supplied from the water supply pipe onto a predetermined area,
A head body connected to the water supply pipe and receiving water supplied from the water supply pipe;
A nozzle unit that is integrally or separately connected to the head body and sprays water received by the head body onto the predetermined area;
The head body is provided with filtering means for filtering water supplied from the water supply pipe, and detachable means for making the filtering means detachable from the head body,
The attachment / detachment means is disposed at a different position from the connection point between the water supply pipe and the head body, and the connection point between the head body and the nozzle part,
Features a water spray head. The head body includes a primary side connection port for connecting the head body to the water supply pipe, a secondary side connection port for connecting the nozzle portion to the head body, and the filtering means. Provided with a connection port for replacement that can be taken in and out of
The water spray head according to claim 1. The attaching / detaching means is a lid provided detachably with respect to the replacement connection port in order to seal the replacement connection port;
The water spray head according to claim 2. The primary side connection port or the secondary side connection port and the replacement connection port are arranged on substantially the same straight line,
Screws between the water supply pipe and the primary side connection port, between the secondary side connection port and the nozzle portion, and between the replacement connection port and the lid portion, respectively. Can be fixed,
The screw fixing direction between the water supply pipe and the primary side connection port, or the screw fixing direction between the secondary side connection port and the nozzle part, the replacement connection port and the lid part The screw fixing direction between the two is opposite to each other,
The water spray head according to claim 2 or 3, wherein The filtering means is fixed to the attaching / detaching means;
The water spray head according to any one of claims 1 to 4.

Images