Energy-saving boiler with removable liner

Abstract

The present invention discloses an energy-saving boiler with a detachable inner shell, which mainly solves the problems in the prior art that the inner shell of the existing boiler cannot be detached, so that the inner shell is easy to collect scale, which has potential safety hazards and is not conducive to the use of most users, and the flue gas is discharged unevenly, and there is no time to cool down, which has the risk of explosion. The energy-saving boiler with a detachable inner shell includes an upper shell and a lower shell connected to each other by a flange; a smoke outlet pipe connecting the inside and the outside of the upper shell is provided in the upper shell; an inner shell is provided in the lower shell, a lower flue mechanism is provided around the lower part of the inner shell, an upper flue mechanism is provided above the inner shell, and the upper flue mechanism and the lower flue mechanism are connected to each other; a burner is connected to the side wall of the lower shell by bolts; the upper flue mechanism includes an upper annular smoke chamber connected to the lower flue mechanism, and the upper annular smoke chamber is connected to the main smoke outlet pipe; the main smoke outlet pipe is connected to the smoke outlet pipe in the upper shell in a plug-in and detachable manner. Through the above scheme, the present invention achieves the purpose of detachability and energy saving, and has high practical value and promotion value.

Description

Technical Field

[0001] The invention relates to a boiler, in particular to an energy-saving boiler with a detachable inner tank. Background Art

[0002] Natural gas steam-water dual-purpose boilers are widely used in China. According to preliminary statistics, they account for about 95% of the total number of boilers. The technical levels of the people who use them in managing, using, maintaining and servicing boilers are uneven. Most of them are small or individual private enterprises. There are no special water treatment laboratory personnel, nor special water chemical instruments and water treatment equipment. Most of the boiler feed water is hard water that has not been softened. The boiler scales very quickly. Some boilers begin to burst due to thick scale after two months of use. The inner tank causes high-temperature oxidation corrosion of the steel plate due to thick scale, which causes the thickness of the steel plate to decrease sharply. The boiler safety device uses a water seal pipe as a safety valve. A large number of boilers have water seal pipes set in the middle of the lower shell. This pipe is most likely to be blocked. When the pressure is too high, the boiler cannot be depressurized due to scale blockage, which is very likely to cause safety accidents.

[0003] The inner tank of a traditional steam-water dual-purpose boiler cannot be disassembled. Due to scale blockage, it often causes boiler tube bursts, weld cracks, and bubbling in the inner tank, increasing the boiler maintenance cost and greatly shortening the service life of the boiler. Due to the thickening of scale, the heat transfer coefficient is reduced, the thermal resistance is increased, the boiler thermal efficiency is reduced, and the energy consumption is increased. The existing boiler directly discharges flue gas, the flue gas has no time to cool down, and the flue gas discharge is uneven and prone to explosion. Summary of the invention

[0004] The purpose of the present invention is to provide an energy-saving boiler with a removable inner liner, so as to solve the problem that the inner liner of the existing boiler cannot be removed, making it easy for scale to accumulate inside, posing a safety hazard and not conducive to use by most users, and the smoke is discharged unevenly, and there is no time to cool down, posing a risk of explosion.

[0005] In order to solve the above problems, the present invention provides the following technical solutions:

[0006] An energy-saving boiler with a detachable inner shell comprises an upper shell and a lower shell connected to each other by flanges; a smoke outlet pipe connected to the inside and outside of the upper shell is arranged in the upper shell; an inner shell is arranged in the lower shell, a lower flue mechanism is arranged around the lower part of the inner shell, an upper flue mechanism is arranged above the inner shell, and the upper flue mechanism and the lower flue mechanism are connected to each other; a burner is connected to the side wall of the lower shell by bolts; the upper flue mechanism comprises an upper annular smoke chamber connected to the lower flue mechanism, and the upper annular smoke chamber is connected to a main smoke outlet pipe; the main smoke outlet pipe is connected to the smoke outlet pipe in the upper shell in a plug-in and detachable manner.

[0007] Specifically, the lower flue mechanism includes a lower annular smoke chamber arranged around the lower part of the inner tank, a plurality of smoke inlet pipe bundles are connected between the lower annular smoke chamber and the upper part of the inner tank, and a plurality of smoke outlet pipe bundles are connected between the lower annular smoke chamber and the upper annular smoke chamber.

[0008] Specifically, a boss is provided in the lower shell, and the bottom of the upper annular smoke chamber is located on the boss; a ring disk is fixed around the bottom of the inner container, and the lower annular smoke chamber is located on the ring disk.

[0009] Specifically, a gasket is provided on the ground, an opening is provided at the bottom of the lower shell, and an annular support frame is provided between the gasket and the inner container.

[0010] Specifically, the smoke outlet pipe bundle is connected to the lower annular smoke chamber or the upper annular smoke chamber in a plug-in and detachable manner.

[0011] Specifically, the upper annular smoke chamber comprises an upper annular smoke duct, the upper annular smoke duct is connected with a smoke collecting chamber, and a plurality of branch pipes are connected between the upper annular smoke duct and the smoke collecting chamber.

[0012] Specifically, a hand hole and a dust cleaning hole are respectively provided at the lower shell of the annular support frame.

[0013] Specifically, a lifting lug is provided on the upper shell.

[0014] Specifically, a manhole is provided on the upper portion of the upper shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, the upper shell and the lower shell are connected by flanges, the flanges are disassembled, the upper shell is lifted, the bolts are disassembled and the burner is removed, and then the lower shell is moved away to expose the upper flue mechanism, the inner tank and the lower flue mechanism; the inner tank can be replaced or all the mechanisms in the lower shell can be replaced; the method is simple and convenient without special technical requirements such as water treatment and scale treatment, and is suitable for use by small enterprises and individual private enterprises, greatly avoiding safety hazards; the smoke is discharged from the top of the inner tank through the lower flue mechanism at the bottom of the inner tank, the upper flue mechanism above the inner tank, the main smoke outlet pipe, and the smoke outlet pipe in sequence, and the smoke is fully cooled and evenly mixed along the path, so that the smoke is discharged in a low temperature and orderly manner, avoiding the risk of explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 Schematic diagram of the connection structure between the upper shell and the lower shell.

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0020] Figure 4 Schematic diagram of the inner tank structure removed by the first method.

[0021] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0022] 1-flange, 2-upper shell, 3-lower shell, 4-smoke outlet pipe, 5-inner liner, 6-burner, 7-upper annular smoke chamber, 8-main smoke outlet pipe, 9-lower annular smoke chamber, 10-smoke inlet pipe bundle, 11-smoke outlet pipe bundle, 12-boss, 13-ring plate, 14-gasket, 15-annular support frame, 16-upper annular flue, 17-smoke collecting chamber, 18-branch pipe, 19-hand hole, 20-ash cleaning hole, 21-lifting ear, 22-manhole, 23-thermal insulation layer. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and examples. The embodiments of the present invention include but are not limited to the following examples.

[0024] like Figures 1 to 4 As shown, an energy-saving boiler with a detachable inner shell comprises an upper shell 2 and a lower shell 3 connected to each other by a flange 1; a smoke outlet pipe 4 communicating with the inside and outside of the upper shell 2 is arranged in the upper shell 2; an inner shell 5 is arranged in the lower shell 3, a lower flue mechanism is arranged around the lower part of the inner shell 5, an upper flue mechanism is arranged above the inner shell 5, and the upper flue mechanism and the lower flue mechanism are communicated with each other; a burner 6 is connected to the side wall of the lower shell 3 by bolts; the upper flue mechanism comprises an upper annular smoke chamber 7 communicated with the lower flue mechanism, and the upper annular smoke chamber 7 is communicated with a main smoke outlet pipe 8; the main smoke outlet pipe 8 is connected to the smoke outlet pipe 4 in the upper shell 2 in a plug-in and detachable manner; the upper shell 2 and the lower shell 3 are connected by a flange 1, the flange 1 is disassembled, the upper shell 2 is hoisted, the bolts are disassembled to remove the burner 6, and then the upper shell 2 is adjusted. The lower shell 3 is removed to expose the upper flue mechanism, the inner tank 5 and the lower flue mechanism; the inner tank 5 can be replaced or all the mechanisms in the lower shell 3 can be replaced; this method is simple and convenient without special technical requirements such as water treatment and scale treatment, and is suitable for use by small enterprises and individual private enterprises, which greatly avoids safety hazards; the flue gas is discharged from the top of the inner tank 5 through the lower flue mechanism at the bottom of the inner tank 5, the upper flue mechanism above the inner tank 5, the main smoke outlet pipe 8, and the smoke outlet pipe 4 in sequence, and the smoke is fully cooled and evenly mixed along the path, so that the smoke is discharged in a low temperature and orderly manner, avoiding the risk of explosion; the lower shell is provided with a burner interface, and the burner 6 is arranged in the burner interface by bolts; an insulating layer 23 is provided in the burner interface.

[0025] As a preferred embodiment of the present invention, the lower flue mechanism includes a lower annular smoke chamber 9 arranged around the lower part of the inner liner 5, a plurality of smoke inlet pipe bundles 10 are connected between the lower annular smoke chamber 9 and the upper part of the inner liner 5, and a plurality of smoke outlet pipe bundles 11 are connected between the lower annular smoke chamber 9 and the upper annular smoke chamber 7; the length of the smoke exhaust path is increased, the smoke temperature is reduced, and the smoke is mixed evenly.

[0026] As a preferred embodiment of the present invention, a boss 12 is provided in the lower shell 3, and the bottom of the upper annular smoke chamber 7 is located on the boss 12; a ring disk 13 is fixed around the bottom of the inner liner 5, and the lower annular smoke chamber 9 is located on the ring disk 13; the boss 12 and the ring disk 13 are used to support the upper annular smoke chamber 7 and the lower annular smoke chamber 9 respectively.

[0027] As a preferred embodiment of the present invention, a gasket 14 is provided on the ground, the bottom of the lower shell 3 has an opening, and an annular support frame 15 is provided between the gasket 14 and the inner liner 5; the annular support frame 15 makes the supporting force more uniform, and the annular support frame 15 is in contact connection with the inside of the inner liner 5, not welded.

[0028] In a preferred embodiment of the present invention, the smoke outlet pipe bundle 11 is detachably connected to the lower annular smoke chamber 9 or the upper annular smoke chamber 7 in a plug-in manner; for ease of disassembly, other detachable connections may also be selected; the plug-in connections are mutually locked.

[0029] As a preferred embodiment of the present invention, the upper annular smoke chamber 7 includes an upper annular smoke duct 16, which is connected to a smoke collecting chamber 17, and a plurality of branch pipes 18 are connected between the upper annular smoke duct 16 and the smoke collecting chamber 17; the length of the smoke exhaust path is increased, the smoke temperature is reduced, and the smoke is mixed evenly.

[0030] As a preferred embodiment of the present invention, a hand hole 19 and a cleaning hole 20 are respectively provided at the lower shell 3 of the annular support frame 15; the holes are used for cleaning, installation and maintenance.

[0031] As a preferred embodiment of the present invention, a lifting ear 21 is provided on the upper shell 2 to facilitate the movement and installation of the upper shell 2.

[0032] As a preferred embodiment of the present invention, a manhole is provided on the upper portion of the upper shell 2 for maintenance and easy installation.

[0033] The present invention can be disassembled in two ways: first, the upper shell 2 and the lower shell 3 are connected by the flange 1, the flange 1 is disassembled, the upper shell 2 is lifted, the bolts are disassembled and the burner 6 is removed, and then the lower shell 3 is moved to expose the upper flue mechanism, the inner liner 5 and the lower flue mechanism; the inner liner 5 can be replaced or all the mechanisms in the lower shell 3 can be replaced; second, the upper shell 2 and the lower shell 3 are lifted by the lifting ears 21 on the upper shell 2, and under the gravity of the inner liner 5 and the lower annular smoke chamber 9, the smoke outlet pipe bundle 11 is separated from the lower annular smoke chamber 9 or the upper annular smoke chamber 7, exposing the inner liner 5 and the lower annular smoke chamber 9 and other structures, and then the inner liner 5 is replaced and installed.

[0034] The present invention can be disassembled in two ways: first, the upper shell and the lower shell are connected by a flange, the flange is disassembled, the upper shell is lifted, the bolts are disassembled and the burner is removed, and then the lower shell is moved to expose the upper flue mechanism, the inner liner and the lower flue mechanism; the inner liner can be replaced or all the mechanisms in the lower shell can be replaced; second, the upper shell and the lower shell are lifted by the lifting ears on the upper shell, and under the gravity of the inner liner and the lower annular smoke chamber, the smoke outlet pipe bundle is separated from the lower annular smoke chamber or the upper annular smoke chamber, exposing the inner liner and the lower annular smoke chamber and other structures, and then the inner liner is replaced and installed.

[0035] It is worth noting that, based on the above structural design, in order to solve the same technical problem, even if some insubstantial changes or modifications are made to the present invention, the essence of the technical solution adopted is still the same as the present invention, so it should also be within the protection scope of the present invention.

Claims

1. An energy-saving boiler with a detachable inner tank, characterized in that: The invention comprises an upper shell (2) and a lower shell (3) which are connected to each other via a flange (1); a smoke outlet pipe (4) which is connected to the inside and outside of the upper shell (2); an inner shell (5) is provided in the lower shell (3); a lower smoke duct mechanism is provided around the lower part of the inner shell (5); an upper smoke duct mechanism is provided above the inner shell (5); the upper smoke duct mechanism and the lower smoke duct mechanism are connected to each other; a burner (6) is connected to the lower part of the side wall of the lower shell (3) via bolts; the upper smoke duct mechanism comprises an upper annular smoke chamber (7) which is connected to the lower smoke duct mechanism; the upper annular smoke chamber (7) is connected to a main smoke outlet pipe (8); the main smoke outlet pipe (8) is connected to the smoke outlet pipe (4) in the upper shell (2) in a pluggable and detachable manner; The lower flue mechanism comprises a lower annular smoke chamber (9) arranged around the lower part of the inner tank (5); a plurality of smoke inlet pipe bundles (10) are connected between the lower annular smoke chamber (9) and the upper part of the inner tank (5); and a plurality of smoke outlet pipe bundles (11) are connected between the lower annular smoke chamber (9) and the upper annular smoke chamber (7); The smoke is discharged from the top of the inner tank (5) through the smoke inlet pipe bundle (10), the lower annular smoke chamber (9), the smoke outlet pipe bundle (11), the upper annular smoke chamber (7), the main smoke outlet pipe (8), and the smoke outlet pipe (4) in sequence; A boss (12) is provided in the lower shell (3), and the bottom of the upper annular smoke chamber (7) is located on the boss (12); a ring disk (13) is fixed around the bottom of the inner container (5), and the lower annular smoke chamber (9) is located on the ring disk (13); The smoke outlet pipe bundle (11) is connected to the lower annular smoke chamber (9) or the upper annular smoke chamber (7) in a plug-in and detachable manner; and a lifting lug (21) is provided on the upper shell (2).

2. The energy-saving boiler with a detachable inner tank according to claim 1 is characterized in that: A gasket (14) is provided on the ground, the bottom of the lower shell (3) has an opening, and an annular support frame (15) is provided between the gasket (14) and the inner container (5).

3. The energy-saving boiler with a detachable inner tank according to claim 1 is characterized in that: The upper annular smoke chamber (7) comprises an upper annular smoke duct (16), the upper annular smoke duct (16) is connected to a smoke collecting chamber (17), and a plurality of branch pipes (18) are connected between the upper annular smoke duct (16) and the smoke collecting chamber (17).

4. The energy-saving boiler with a detachable inner tank according to claim 2 is characterized in that: A hand hole (19) and a dust cleaning hole (20) are respectively provided at the lower shell (3) at the annular support frame (15).

5. The energy-saving boiler with a detachable inner tank according to claim 1 is characterized in that: A manhole is provided at the upper portion of the upper shell (2).

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