KR100197024B1 - Structure of door for inside entrance of boiler - Google Patents

Abstract

An object of the present invention is to provide a structure of a boiler door that can be inserted into a boiler for regular maintenance or maintenance of a boiler.

The present invention provides a refrigerator having a crossbar for making the door closely contact with the boiler inlet by the operation of a handle, a fixing jaw provided at the boiler inlet for tightly holding each end of the crossbar, And an eye bolt fixed to the inlet of the boiler and screwed with the butterfly nut.

Description

Structure of door for inside entrance of boiler

FIG. 1 is a front elevation view of the present invention. FIG.

FIG. 2 is a cross-sectional exemplary view of the present invention. FIG.

FIG. 3 is a front view of a conventional door; FIG.

FIG. 4 is a cross-sectional view of a conventional door. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

1: door frame 4: door

6: Gasket support 7: Crossbar fixing jaw

10: butterfly nut fixing plate 11: door stiffener

16: Hinges 18: Crossbar

22: eye bolt fixing rig 27: handle

28: Insulating casing 31: Refractory support pin

32: hinge pin 35: wing nut

36: Eye bolt 40: Insulation material

41: Refractory

[Object of the invention]

The present invention relates to a structure of a boiler door which is provided for inspecting and inspecting a boiler for periodical inspection or maintenance of a boiler, and more particularly, to a structure of a boiler door that can be conveniently and quickly opened and closed by a single handle and two butterfly nuts And to maintain the closed state of the door at the same time.

[TECHNICAL FIELD OF THE INVENTION AND RELATED ART OF THE SAME]

Generally, a boiler is a device that heats water or a heat medium in a sealed container by combustion heat of fuel or other high-temperature gas heat to generate steam or hot water at a pressure higher than atmospheric pressure and supply it to another place.

If the boiler ruptures, the pressure inside the pipe suddenly becomes charged, so the water inside the boiler increases suddenly due to the heat, resulting in a bulky explosion at a time, resulting in a large explosive force.

Therefore, the boiler shall be checked from time to time or periodically to check the presence of residue and leak condition of each part so as not to interfere with burning and burning in furnace wall, combustion chamber, and flue.

By cleaning the furnace by frequent inspection of the boiler, it is possible to save fuel, extend boiler life, minimize ventilation resistance, prevent boiler safety accidents, and increase thermal efficiency.

Conventionally, the inner door has a circular shape as shown in FIG. 3 and FIG. 4, and at the same time, a hinge portion operating at a right angle is coupled to the door, and a circular flange is integrally formed around the door And the door is closed by tightening the bolts in a radial manner. Such a conventional boiler door has the advantages of tightly closing the door and facilitating the opening operation. However, the inspector must have a separate hand tool to closely contact the door The door is opened by releasing a large number of bolts, thereby causing inconveniences in the operation.

In addition, there has been a problem that the bolts to be released must be carefully and separately stored in order to prevent the blinds.

[Technical Problem]

The present invention provides a structure of a door for a boiler interior access door that allows a door to be conveniently and quickly opened and closed with a single handle and two butterfly nuts without a separate hand tool, The present invention relates to a refrigerator having a crossbar for allowing a door to be brought into close contact with a boiler inlet by an operation of a handle, a fixing jaw provided at an inlet of the boiler for tightly holding each end of the crossbar, And a gas bolt provided around the door is pressed by the crossbar so that the combustion gas is prevented from leaking to the outside of the boiler. This is achieved by providing a structure of an interior access door.

[Structure and operation of the invention]

1 and 2, there is shown a boiler interior access door according to the present invention, which comprises a door frame 1 having a rectangular shape and a door 4 having a shape corresponding thereto A cross bar 18 vertically disposed at the center of the front face of the door 4 and a plurality of doors 16 installed radially in the center of the door 4 to reinforce the strength of the door 4, A reinforcing member 11 and a cross bar fixing jaw 7 for tightly fixing the cross bar 18 to the door frame 1. [

The door 4 is rotatably provided by the door frame 1 and the hinge 16 and the hinge 16 is fixed by the hinge pin 32.

The door (4) is provided with a pair of butterfly nut fixing plates (10) at the ends symmetrical to the hinge (16).

In the door frame 1 at a position corresponding to the butterfly nut fixing plate 10, an eye bolt 36 is fixed orthogonally by the eye bolt fixing rig 22.

The butterfly nut fixing plate 10 of the door 4 is positioned in a state of holding the eye bolt 36 and when the door 4 is brought into close contact with the door frame 1, the butterfly nut 35 is screwed tightly And at the same time, the door 4 is opened in the door frame 1.

A handle 27 is provided at the front center of the door 4 so that the crossbar 18 is operated to come into close contact with the door frame 1.

At this time, the gasket of the gasket support 6 provided inside the door 4 is compressed to prevent the combustion gas in the boiler from leaking out.

When the door 4 is opened, the handle 27 pressing the cross bar 18 is turned counterclockwise to loosen the cross bar 18 attached to the fixing jaw 7, and then the cross bar 18 is turned slightly to the left. Since the cross bar 18 is removed from the jaw 7, the door is opened around the hinge 16 when only the two butterfly nuts 35 are released.

When the door 4 is locked, it is performed in the reverse order of the above-mentioned operation.

In order to construct the door for the inside and the outside of the boiler, a crossbar for making the door closely contact with the boiler inlet by the operation of the handle, a fixing jig for tightly holding the ends of the crossbar installed at the boiler inlet, A gasket provided around the door by the close contact of the cross bar is press-fitted to the boiler inlet, and the gasket is fixed to the boiler inlet, And the eye bolt is horizontally protruded from the door entrance and is held by a butterfly nut fixing plate provided on the door, and the butterfly nut is screwed.

In the accompanying drawings, reference numeral 28 denotes a casing of the heat insulating material 40, and 31 denotes a refractory 41 support pin.

[Effects of the Invention]

The effects of the present invention will be described with reference to FIGS. 1 and 2.

[When the door is opened]

The handle 27 holding the cross bar 18 is rotated counterclockwise so that the respective ends of the cross bar 18 are loosened at the fixing jaws 7 and when the cross bar 18 is partially turned to the left side, .

The door is released by being rotated about the hinge pin 32 of the hinge 16 when the handle 35 is pulled out by unscrewing the butterfly nut 35 screwed to the eyebolt 35 and holding the handle 27 and pulling it forward.

[When locking the door]

The door 4 is pushed into the door frame 1 so that the eye bolt 36 is positioned in the hole of the door fixing plate 10 and then the butterfly nut 35 is screwed into the eye bolt 36 .

The end of the cross bar 18 is turned to the right and the end of the cross bar 18 is positioned at the fixing jaw 7. The handle 27 is rotated clockwise so that the cross bar 18 is brought into close contact with the door frame 1 do.

Accordingly, the present invention relates to a structure of a door for a boiler interior access door that allows a door to be opened and closed conveniently and quickly with a single handle and a butterfly nut having a thickness, and to maintain a more closed state. Therefore, it is possible to provide convenience to the boiler maintenance inspector or the driver.

Claims (3)

In constructing the door for accessing inside the boiler; a) a crossbar for bringing the door into close contact with the inlet of the boiler by the movement of the handle; b) a fixing jig installed at the boiler inlet for tightly holding each end of the crossbar; c) a butterfly nut for fixing the door to the boiler inlet and releasing the door from being fixed; and d) an eyebolt fastened to the butterfly nut and fastened to the boiler inlet. The door structure according to claim 1, wherein the gasket provided around the door is compressed by the contact of the crossbar to prevent the combustion gas from leaking out. [2] The door of claim 1, wherein the eye bolt is horizontally protruded from a door entrance and is held by a butterfly nut fixing plate provided on a door, and a butterfly nut is screwed.