KR102631759B1 - Firefighting sprinkler with improved workability and its construction method - Google Patents

Abstract

One embodiment of the present invention improves constructability by allowing multiple sprinklers to be easily installed according to a simplified construction process, unlike the conventional sprinkler and its construction method in which multiple sprinklers installed on the ceiling of an indoor space are installed individually one by one. It relates to a fire sprinkler and its construction method.

Description

Fire sprinkler with improved constructability and construction method thereof {FIREFIGHTING SPRINKLER WITH IMPROVED WORKABILITY AND ITS CONSTRUCTION METHOD}

The examples below show a fire sprinkler with improved constructability that allows multiple sprinklers to be easily installed according to a simplified construction process, unlike the conventional sprinkler and its construction method in which multiple sprinklers installed on the ceiling of an indoor space are installed individually one by one. and its construction method.

A sprinkler is a firefighting device that can spray water to the point where a fire occurs through a pipe connected to a fire extinguishing tank.

Typically, sprinklers are installed on the ceiling of a building to spray water into the interior space of the building.

These sprinklers are installed to spray water flowing in through water pipes/firefighting pipes.

However, conventional sprinklers are constructed by cutting pipes embedded in the slab at each installation point and installing supply pipes and sprinklers there, so the installation process is very cumbersome and installation takes a considerable amount of time.

KR 10-1985628 B KR 10-2022-0153856 A KR 10-0955049 B

The problem to be solved by an embodiment of the present invention is to overcome the limitations of conventional sprinklers as described above, by installing/constructing multiple sprinklers by cutting the pipe buried in the ceiling (slab) of a building only once. , to provide a fire sprinkler with improved constructability and a construction method thereof.

According to one embodiment, perforating the ceiling of the building to expose pipes buried inside the ceiling; cutting one side of the pipe and removing a portion of a predetermined length from the pipe; Inserting a T-shaped branch pipe into the cutting point of the pipe; Fixing the cutting point of the pipe and the T-shaped branch pipe with a predetermined coupler; Installing a support bar below the ceiling; Connecting the support and the discharge pipe of the T-shaped branch pipe; and connecting a sprinkler to the support, wherein the coupler includes: a first case whose cross-section is formed in a predetermined arc shape; a second case formed so that a cross section combined with the first case forms a predetermined circular shape; a hinge connecting the first case and the second case; A first bar-nut connected to one side of the first case; a second banana connected to one side of the second case; and a bolt fastened to the second bar nut, wherein the step of fixing with the coupler includes: attaching a predetermined waterproof pad to the cutting point of the pipe and the T-shaped branch pipe; attaching the open coupler around the hinge to the waterproof pad; Closing the coupler around the hinge so that the coupler surrounds the waterproof pad; and fastening the bolt to the first bar nut. A method of constructing a fire sprinkler with improved constructability is provided, including the step of fastening the bolt to the first bar nut.

In addition, the support includes: a support pipe whose interior is composed of a hollow shaft and is configured in a predetermined mesh shape to distribute water supplied from the pipe to the sprinkler; and a plurality of connection parts formed on one side of the support pipe and providing a space to which the sprinkler is fastened. The step of connecting the sprinkler to the support includes: connecting a plurality of sprinklers to one support, so that the building perforating the ceiling, removing a portion of the pipe of a predetermined length, inserting the T-shaped branch pipe, fixing it with the coupler, installing the support, and the support and the T It can be configured to install multiple sprinklers by performing the step of connecting the discharge pipes of the shaped branch pipes once.

And, the sprinkler includes: a body portion formed in a predetermined circular shape and having a predetermined space therein; A protrusion protruding from at least one side of the body portion; A lever provided at the bottom of the sprinkler; an operating shaft extending from the lever; An anti-rotation protrusion protruding on one side of the operating shaft; a blocking bar that blocks or allows operation of the lever by being fixed to the rotation prevention protrusion or deviating from the rotation prevention protrusion; a first bevel gear provided inside the sprinkler and rotating according to rotation of the lever; a second bevel gear rotating in a direction perpendicular to the rotation axis of the first bevel gear as the first bevel gear rotates; A ball screw extending from the second bevel gear; A guide transported in the axial direction of the ballscrew according to the rotation of the ballscrew; a press-fit bar connected to the guide; and a first through hole formed to have an inner diameter larger than the diameter of the press-fit bar, providing a path for supplying water from the support pipe to the inside of the sprinkler, wherein the connection portion has: an outer peripheral surface so that the sprinkler is inserted. This protruding uneven portion; an insertion groove formed by opening one side of the concavo-convex portion to allow the protrusion to be inserted; a rail portion providing a movement path for the protrusion so that the sprinkler can rotate when the protrusion is inserted through the insertion groove; a second through hole providing a path through which the press-fit bar is inserted and a path through which water supplied from the support pipe is supplied to the sprinkler; a sealing cap coupled to the second through hole to prevent water supplied from the support pipe from leaking; An elastic body connected to one side of the sealing cap; and a fixing part to which the elastic body is fixed. The step of connecting the sprinkler to the support includes: aligning the protrusion with the insertion groove and inserting the sprinkler into the connection part; rotating the sprinkler to move the protrusion along the rail portion; In a state where the protrusion is seated on the end of the rail portion, inserting the sealing cap into the support pipe by rotating the lever; and fixing the blocking bar to a rotation prevention protrusion to block the operation of the lever.

In addition, the support pipe includes: a first pipe composed of an open shaft at one end and the connection portion being fixed at the other end; a second pipe to which the connection part is fixed at both ends; and a third pipe consisting of an open shaft open at both ends, wherein the connecting portion includes: a closed shaft connected at every 90 degree point on the side excluding the point where the open shaft is connected, based on the center of the connecting portion; Combining two of the first to third pipes into a combination including at least one first pipe or at least one second pipe by perforating the closed shaft and connecting the perforated closed shaft and the open shaft. And, by connecting a plurality of the first to third pipes, a mesh form of the support pipe can be formed.

In addition, the connection unit further includes: a main supply shaft connected to an upper part of the connection unit, and the step of connecting the support and the discharge pipe of the T-shaped branch pipe includes: connecting the discharge pipe of the T-shaped branch pipe and the main supply shaft. A thread is formed on the outer peripheral surface of the end of the closed shaft, and the step of installing a support in the lower part of the ceiling includes: fastening a perforation jig to the thread of the closed shaft provided in the plurality of first pipes and second pipes; perforating an end of the closed shaft with a needle formed at the center of the perforation jig; Separating the perforation jig from the closed shaft; and combining and connecting a plurality of the first to third pipes.

According to one embodiment, multiple sprinklers can be installed by cutting a pipe buried in the ceiling (slab) of a building once.

Additionally, based on a predetermined coupler structure, water leakage at the connection portion of the pipes can be prevented.

Additionally, the sprinkler can be connected to the support/support pipe with one touch.

In addition, the support pipes can be assembled in a modular manner, allowing construction to be tailored to the indoor structure of the building.

Additionally, in the process of connecting pipes, the closed shaft can be easily perforated using a predetermined drilling jig and connected to the open shaft.

Figure 1 is a diagram showing a conventional fire sprinkler and its construction method.
Figure 2 is a diagram showing a construction method of a fire sprinkler with improved constructability according to an embodiment of the present invention.
Figure 3 is a flowchart showing the construction method of a fire sprinkler with improved constructability according to an embodiment of the present invention.
Figure 4 is a diagram showing a coupler used in the construction method of a fire sprinkler with improved constructability according to an embodiment of the present invention.
Figure 5 is a diagram showing the fastening structure of a fire sprinkler with improved constructability according to an embodiment of the present invention.
Figure 6 is a diagram showing the sealing cap structure of a fire sprinkler with improved constructability according to an embodiment of the present invention.
Figure 7 is a diagram showing the connection structure of a fire sprinkler with improved constructability according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, various changes can be made to the embodiments, so the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes for the embodiments are included in the scope of rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Terms such as first or second may be used to describe various components, but these terms should be interpreted only for the purpose of distinguishing one component from another component. For example, a first component may be named a second component, and similarly, the second component may also be named a first component.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected or connected to the other component, but that other components may exist in between.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are the same as those commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. It has meaning. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are illustrative, and the present invention is not limited to the matters shown. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When ‘includes’, ‘has’, ‘consists of’, etc. mentioned in this specification are used, other parts may be added unless ‘only’ is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

The size and thickness of each component shown in the drawings are shown for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the components shown.

Each feature of the various embodiments of the present invention can be partially or fully combined or combined with each other, and as can be fully understood by those skilled in the art, various technical interconnections and operations are possible, and each embodiment may be implemented independently of each other. It may be possible to conduct them together due to a related relationship.

According to one embodiment, the step of perforating the ceiling (C) of the building so that the pipe (P) buried inside the ceiling (C) is exposed; Cutting one side of the pipe (P) and removing a portion of a predetermined length from the pipe (P); Inserting a T-shaped branch pipe (T) into the cutting point of the pipe (P); Fixing the cutting point of the pipe (P) and the T-shaped branch pipe (T) with a predetermined coupler (2); Installing a support (1) below the ceiling (C); Connecting the support (1) and the discharge pipe of the T-shaped branch pipe (T); and connecting the sprinkler (3) to the support (1).

According to the above steps, by connecting a plurality of sprinklers 3 to the support 1, a plurality of sprinklers 3 can be installed even if the pipe P is cut only once.

Figure 1 shows a conventional sprinkler (3) construction method. In order to install two sprinklers (3), in FIG. 1, the pipe (P) is cut at two points for construction, and as a result, the construction time/period increases in proportion to the number of sprinklers (3) installed.

Figure 2 shows a construction method according to an embodiment of the present invention. In Figure 2, construction is performed by cutting one point of the pipe (P), and the cut point is directly connected to the support (1), and then a plurality of sprinklers (3) are connected to the support (1). Accordingly, the construction time/period is not proportional to the installed number of sprinklers 3, and the construction time/period can be significantly reduced compared to the conventional construction method.

The coupler 2 includes: a first case 21 whose cross-section is formed in a predetermined arc shape; a second case (22) whose cross-section combined with the first case (21) is formed to have a predetermined circular shape; A hinge 23 connecting the first case 21 and the second case 22; A first bar-nut 24 (Bar-Nut) connected to one side of the first case 21; A second bar nut (25) connected to one side of the second case (22); and a bolt 27 fastened to the second bar nut 25.

The step of fixing with the coupler (2) includes: attaching a predetermined waterproof pad to the cutting point of the pipe (P) and the T-shaped branch pipe (T); attaching the open coupler (2) around the hinge (23) to the waterproof pad; Closing the coupler (2) around the hinge (23) so that the coupler (2) surrounds the waterproof pad; and fastening the bolt 27 to the first bar nut 24. A method of constructing a fire sprinkler 3 with improved constructability is provided.

Figure 4 shows the structure of the coupler 2.

In the state of being removed from the first bar nut 24, when the first case 21 and the second case 22 are spread around the hinge 23, a shell surrounding the pipe P is formed from the side of the pipe P. It can be seated on the pipe (P) in this form.

At this time, to prevent water leakage from occurring at the connection point between the pipe (P) and the T-shaped branch pipe (T), a waterproof pad is attached to the connection point. The waterproof pad may be replaced with waterproof Teflon tape.

Thereafter, the coupler 2 is seated and the bolt 27 is fastened to the first bar nut 24 to minimize the gap between the first case 21 and the second case 22 and to secure the waterproof pad and pipe ( P)/Press the T-shaped branch pipe (T) to complete the combination.

The first bar nut 24 and the second bar nut 25 are formed in a predetermined cylindrical shape and refer to members in which a nut (groove) is formed at one or more points on the side surface. The first bar nut 24 and the second bar nut 25 are connected to the first casing and the second casing, and are fixed so as not to be removed in the axial direction by the nut cover 26. ) It can be rotated in the circumferential direction internally.

In addition, the support (1) is: a support pipe whose interior is composed of a hollow shaft and is configured in a predetermined mesh shape to distribute the water supplied from the pipe (P) to the sprinkler (3). (10); and a plurality of connection parts 11 formed on one side of the support pipe 10 and providing a space where the sprinkler 3 is fastened.

Figure 7 shows the shape of the support pipe 10 and the connection part 11.

The support (1)/support pipe (10) simultaneously performs the function of fixing/supporting the sprinkler (3) and the pipe function of supplying water to the sprinkler (3).

The step of connecting the sprinkler (3) to the support (1) is: connecting a plurality of sprinklers (3) to one support (1), [perforating the ceiling (C) of the building, the pipe (P) ), removing a portion of a predetermined length, inserting the T-shaped branch pipe (T), fixing it with the coupler (2), installing the support (1), and the support (1). ) and the step of connecting the discharge pipe of the T-shaped branch pipe (T)] can be configured to install a plurality of sprinklers (3) by performing each step once.

And, the sprinkler 3 includes: a body portion 30 that is formed in a predetermined circular shape and has a predetermined space therein; A protrusion 31 protruding on one or more sides of the body 30; A lever (not shown) provided at the lower part of the sprinkler (3); An operating shaft (not shown) extending from the lever; An anti-rotation protrusion (not shown) protruding on one side of the operating shaft; A blocking bar (not shown) that blocks or allows operation of the lever by being fixed to the anti-rotation protrusion or deviating from the anti-rotation protrusion; A first bevel gear (not shown) provided inside the sprinkler (3) and rotating according to the rotation of the lever; A second bevel gear (not shown) rotating in a direction perpendicular to the rotation axis of the first bevel gear as the first bevel gear rotates; A ball screw (not shown) extending from the second bevel gear; A guide (not shown) transported in the axial direction of the ball screw as the ball screw rotates; A press-fit bar (32) connected to the guide; And a first through hole 300 that is formed to have an inner diameter larger than the diameter of the press bar 32 and provides a path for receiving water from the support pipe 10 to the inside of the sprinkler 3. can do.

One side of the guide is formed in a predetermined plane and is in close contact with one inner surface of the body portion 30, so that when the ball screw rotates, the guide does not rotate but is only transported in the axial direction.

The operator can rotate the lever to its limit and then limit the rotation of the lever with the blocking bar to keep the sealing cap 113, which will be described later, in a separated/removed state.

According to this process, the support pipe 10 and the sprinkler 3 are connected to each other to form a path through which water is supplied.

The connection portion 11 includes: a concave-convex portion with a protruding outer circumferential surface so that the sprinkler 3 is inserted; an insertion groove 112 formed by opening one side of the concavo-convex portion 117 to allow the protrusion 31 to be inserted; A rail portion 111 that provides a movement path for the projection 31 so that the sprinkler 3 can rotate when the projection 31 is inserted through the insertion groove 112; a second through hole 110 that provides a path through which the press-fit bar 32 is inserted and a path through which water supplied from the support pipe 10 is supplied to the sprinkler 3; A sealing cap 113 coupled to the second through hole 110 to prevent water supplied from the support pipe 10 from leaking out; An elastic body 114 connected to one side of the sealing cap 113; and a fixing part 115 to which the elastic body 114 is fixed.

Hereinafter, a method of fastening the sprinkler 3 to the connection portion 11 will be described with reference to FIG. 5 .

Figure 5 (a) shows a state in which the connection part 11 and the sprinkler 3 are separated, and Figure 5 (b) shows a state in which the sprinkler 3 is fastened to the connection part 11.

The body portion 30 of the sprinkler 3 is seated inside the uneven portion 117 so that the protruding portion 31 is located in the insertion groove 112.

Thereafter, the body portion 30 is rotated (counterclockwise in the drawing) to move the protrusion 31 to the end of the rail portion 111 (top of FIG. 5).

In this state, the side cross section has the same shape as shown in Figure 6 (a).

The worker constructs the support pipe (10) so that water inside the support pipe (10) can flow into the sprinkler (3) according to the steps described later.

The step of connecting the sprinkler 3 to the support 1 includes: aligning the protrusion 31 with the insertion groove 112 and inserting the sprinkler 3 into the connection portion 11; rotating the sprinkler 3 to move the protrusion 31 along the rail 111; With the protrusion 31 seated on the end of the rail 111, inserting the sealing cap 113 into the support pipe 10 by rotating the lever; and fixing the blocking bar to a rotation prevention protrusion to block the operation of the lever.

The worker operates the lever, pushes the sealing cap 113 with the press bar 32 as shown in FIG. 6, and fixes it in a state in which it is removed from the second through hole 110 (FIG. 6 (b)). I order it.

In addition, the support pipe 10 includes: a first pipe (P1) composed of an open shaft 101 at one end and to which the connection portion 11 is fixed at the other end; a second pipe (P2) to which the connection portion 11 is fixed at both ends; and a third pipe (P3) consisting of an open shaft 101 open at both ends, wherein the connection portion 11 includes: the open shaft 101 with respect to the center of the connection portion 11. It includes a closed shaft 116 connected at every 90-degree point on the side excluding this connected point, and by drilling the closed shaft 116 and connecting the perforated closed shaft 116 and the open shaft 101, at least Two of the first pipes (P1) to the third pipes (P3) are combined in a combination including one first pipe (P1) or at least one second pipe (P2), and a plurality of the first pipes ( By connecting the third pipes P1) to P3, the support pipe 10 can be formed in a mesh form.

The shapes of the first pipe (P1) to the third pipe (P3) are shown in FIG. 7.

With reference to the structure of the building to be constructed, the worker selects the required number of first pipes (P1) to third pipes (P3) and combines/combines them to form a support (1) suitable for the site.

Here, the connecting portions 11 function as nodes where each support pipe 10 is connected and as a point where the sprinkler 3 is fastened.

In addition, the connection part 11 may further include: a main supply shaft (not shown) connected to the upper part (based on FIG. 2) of the connection part 11.

The step of connecting the support (1) and the discharge pipe of the T-shaped branch pipe (T) can be performed by: connecting the discharge pipe of the T-shaped branch pipe (T) and the main supply shaft.

A screw thread may be formed on the outer peripheral surface of the end of the closed shaft 116.

The step of installing the support (1) below the ceiling (C) is: a perforation jig (J) on the thread of the closed shaft (116) provided in the plurality of first pipes (P1) and second pipes (P2). ) concluding; perforating an end of the closed shaft 116 with a needle formed at the center of the perforating jig (J); Separating the perforation jig (J) from the closed shaft (116); and combining and connecting a plurality of the first pipes (P1) to the third pipes (P3).

Basically, the closed shafts 116 are manufactured and shipped in an airtight state, and workers drill only the closed shafts 116 that need to be drilled in the field using the drilling jig (J).

The end of the perforation jig (J) is shown in FIG. 7 above.

When the perforation jig (J) is fastened to the screw thread, the needle presses the end of the closure shaft 116 due to the coupling force with the screw thread, thereby perforating the center of the closure shaft 116.

After the perforation is completed, the perforation jig (J) is separated again, and the closed shaft 116 and the open shaft 101 are connected/joined using the coupler (2).

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the following claims.

C: Ceiling
P: Piping
T: T-shaped branch pipe
1: support
10: Support pipe
101: open axis
11: connection part
110: 2nd study room
111: rail part
112: Insertion groove
113: Sealing cap
114: elastic body
115: fixing part
116: closed axis
117: uneven part
2: Coupler
21: first case
22: Second case
23: hinge
24: 1st Bannert
25: 2nd barnnut
26: Nut cover
27: bolt
3: Sprinkler
30: body part
300: 1st public study department
31: protrusion
32: Press-fit bar
P1: 1st pipe
P2: 2nd pipe
P3: Third pipe
J: Perforation jig
S100: Step of perforating the ceiling
S200: Step of removing a portion of a predetermined length from the pipe
S300: Step of inserting a T-shaped branch pipe
S400: Step of fixing the T-shaped branch pipe with a predetermined coupler
S500: Step of installing supports on the lower part of the ceiling
S600: Step of connecting the support and the discharge pipe of the T-shaped branch pipe
S700: Step of connecting sprinkler to support

Claims (3)

Perforating the ceiling of the building to expose pipes buried inside the ceiling;
cutting one side of the pipe and removing a portion of a predetermined length from the pipe;
Inserting a T-shaped branch pipe into the cutting point of the pipe;
Fixing the cutting point of the pipe and the T-shaped branch pipe with a predetermined coupler;
Installing a support bar below the ceiling;
Connecting the support and the discharge pipe of the T-shaped branch pipe; and
Including; connecting a sprinkler to the support,
The coupler:
a first case whose cross-section is formed in a predetermined arc shape;
a second case formed so that a cross section combined with the first case forms a predetermined circular shape;
a hinge connecting the first case and the second case;
A first bar-nut connected to one side of the first case;
a second banana connected to one side of the second case; and
Includes a bolt fastened to the second bar nut,
The steps for securing with the coupler are:
Attaching a predetermined waterproof pad to the cutting point of the pipe and the T-shaped branch pipe;
attaching the open coupler around the hinge to the waterproof pad;
Closing the coupler around the hinge so that the coupler surrounds the waterproof pad; and
Comprising: fastening the bolt to the first bar nut,
The supports are:
a support pipe whose interior is composed of a hollow shaft and is configured in a predetermined mesh shape to distribute water supplied from the pipe to the sprinkler; and
It includes a plurality of connection parts formed on one side of the support pipe and providing a space where the sprinkler is fastened,
The steps for connecting the sprinkler to the support are:
By connecting multiple sprinklers to one support,
Perforating the ceiling of the building, removing a portion of the pipe having a predetermined length, inserting the T-shaped branch pipe, fixing it with the coupler, installing the support, and Multiple sprinklers can be installed by performing the step of connecting the discharge pipe of the T-shaped branch pipe each once,
The sprinkler:
A body portion formed in a predetermined circular shape and having a predetermined space therein;
A protrusion protruding from at least one side of the body portion;
A lever provided at the bottom of the sprinkler;
an operating shaft extending from the lever;
An anti-rotation protrusion protruding on one side of the operating shaft;
a blocking bar that blocks or allows operation of the lever by being fixed to the rotation-prevention protrusion or deviating from the rotation-prevention protrusion;
a first bevel gear provided inside the sprinkler and rotating according to rotation of the lever;
a second bevel gear rotating in a direction perpendicular to the rotation axis of the first bevel gear as the first bevel gear rotates;
A ball screw extending from the second bevel gear;
A guide transported in the axial direction of the ballscrew according to the rotation of the ballscrew;
a press-fit bar connected to the guide; and
It includes a first through hole formed to have an inner diameter larger than the diameter of the press-fit bar and providing a path for receiving water from the support pipe to the inside of the sprinkler,
The connection is:
A concavo-convex portion whose outer peripheral surface protrudes so that the sprinkler can be inserted;
an insertion groove formed by opening one side of the concavo-convex portion to allow the protrusion to be inserted;
a rail portion providing a movement path for the protrusion so that the sprinkler can rotate when the protrusion is inserted through the insertion groove;
a second through hole providing a path through which the press-fit bar is inserted and a path through which water supplied from the support pipe is supplied to the sprinkler;
a sealing cap coupled to the second through hole to prevent water supplied from the support pipe from leaking;
An elastic body connected to one side of the sealing cap; and
It includes a fixing part to which the elastic body is fixed,
The steps for connecting the sprinkler to the support are:
Aligning the protrusion with the insertion groove and inserting the sprinkler into the connection part;
rotating the sprinkler to move the protrusion along the rail portion;
In a state where the protrusion is seated on the end of the rail portion, inserting the sealing cap into the support pipe by rotating the lever; and
A step of blocking the operation of the lever by fixing the blocking bar to an anti-rotation protrusion.
Construction method of fire sprinklers with improved constructability
delete delete