A gas-tight device suitable for incineration grate furnace

Abstract

The present invention is an airtight device suitable for an incineration grate furnace, comprising a blower, a pipeline, a first metal hose, a second metal hose, a flange assembly and a joint; the flange assembly comprises a flange, a bent pipe, a positioning rib plate, a fixing nut, a connecting bolt, a vent, a slot and a sealing ring; the flange is divided into two parts, and is butt-jointed and assembled by fixing nuts and connecting bolts; a slot for installing a sealing ring is arranged inside the flange; a vent is reserved in the flange, and the bent pipe is welded to the reserved vent; the positioning rib is welded to the flange; the bent pipe is completely sealed with the vent on the flange; the positioning rib connects the flange to the sealing box; the connecting bolt and the fixing nut assemble the flange; the blower, the pipeline and the first metal hose are connected to each other, and the joint connects the second metal hose to the bent pipe. The airtight device of the incineration grate furnace of the present invention can effectively prevent smoke, dust and ash from leaking through the active area of ​​the driving push rod.

Description

Technical Field

[0001] The invention relates to the field of incineration, and in particular to an airtight device used in an incineration grate furnace. Background Art

[0002] Waste incineration has become one of the main methods of urban waste treatment because of its significant reduction effect, land saving, elimination of various pathogens, and conversion of toxic and harmful substances into harmless substances.

[0003] In the core equipment of the garbage incinerator, the grate is generally divided into three sections, namely the drying section, the combustion section, and the burnout section. Each section of the grate is moved by a driving device. During the incineration process, a large amount of high-temperature harmful gases will be generated.

[0004] Each grate is equipped with a driving sealing protection device. However, due to long-term operation, the sealing material is worn out, which will have a certain impact on the effect of the sealing protection. Therefore, it is necessary to regularly replace the sealing material to ensure that the internal gas does not leak out. Summary of the invention

[0005] The purpose of the present invention is to improve the operating conditions of the incineration grate furnace, and propose an airtight device applied to the garbage incineration grate furnace. The specific technical solution is as follows:

[0006] The invention discloses an airtight device suitable for an incineration grate furnace, comprising a blower, a pipeline, a metal hose, a flange assembly, a sealing ring, a bend pipe and a joint.

[0007] The flange assembly in the airtight device is divided into two parts and can be assembled with bolts, which is very convenient for installation and disassembly. At the same time, ventilation holes can be reserved so that it can be fully welded with the elbow and completely sealed without air leakage, thus ensuring the sealing of the air duct.

[0008] Positioning holes are set on the flange assembly. Due to the high precision requirements, it can be completely fitted with the grate sealing box to prevent friction and wear with the grate driving rod during operation.

[0009] The flange assembly is equipped with a slot for installing a sealing ring. The sealing ring is made of a material that is resistant to high temperatures and has a low coefficient of friction, which further prevents leakage and allows the entire process to form a multiple sealing structure.

[0010] By calculating the air volume and pipeline flow rate, we can determine the fan selection, pipeline specifications and metal hose model to ensure stable pressure and balanced wind speed, so that the airtight device can achieve the maximum effect.

[0011] The grate sealing box is forced to be blown with positive pressure through the airtight device, so that the internal gas always stays in the incinerator, preventing the gas from slowly leaking out during the movement of the grate drive rod.

[0012] The beneficial effects of the present invention are:

[0013] The airtight device of the incineration grate furnace of the present invention can effectively prevent smoke, dust and ash from leaking out through the active area of ​​the driving push rod. At the same time, the high-temperature airflow generated by the incinerator can be cooled by air, which can play a good cooling role, increase the service life of the sealing box and internal parts, greatly reduce the replacement rate of spare parts, increase the stable operation time of the incinerator, reduce the later maintenance and repair work, and effectively reduce the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : Schematic diagram of the furnace exhaust sealing device.

[0015] Figure 2 : Front view of flange assembly 104.

[0016] Figure 3 : Left view of flange assembly 104.

[0017] Figure 4 : Exploded view of flange assembly 104. Specific implementation methods

[0018] like Figure 1 to Figure 4 As shown, an airtight device suitable for an incineration grate furnace includes a blower 105, a pipeline 106, a first metal hose 107, a second metal hose 109, a flange assembly 104, a sealing ring 208, a bend 202, and a joint 108. The flange assembly 104 is designed with a flange plate 201, a bend 202, a positioning rib plate 203, a fixing nut 204, a connecting bolt 205, a vent 206, a slot 207, and a sealing ring 208.

[0019] The flange 201 is divided into two parts and connected and assembled by fixing nuts 204 and connecting bolts 205; a slot 207 is provided inside the flange 201 for installing a sealing ring 208; a ventilation hole 206 is reserved in the flange 201, and the elbow 202 is welded to the reserved ventilation hole 206; and the positioning rib plate 203 is welded to the flange 201.

[0020] After the sealing ring 208 is sleeved on the reserved position on the grate driving rod 101 , the grate driving rod 101 is assembled and connected with the grate driving beam 102 , and then the grate sealing box 103 is installed on the grate driving rod 101 .

[0021] The elbow 202 and the ventilation hole 206 on the flange 201 are fully welded and completely sealed to prevent air leakage, thereby ensuring the sealing of the air duct.

[0022] Since the flange 201 is designed in half, it needs to be pre-installed outside the grate driving rod 101, and then the sealing ring 208 is pressed into the groove 207 of the flange 201 to further achieve a sealing effect.

[0023] The flange 104 is connected to the sealing box 103 by using the positioning rib plate 203. Due to the high processing precision of the positioning rib plate 203 and the sealing box 103, the two can be completely assembled and fit together, effectively avoiding the friction and loss of parts during operation. The flange 201 is then assembled with the connecting bolts 205 and the fixing nuts 204 to form the flange assembly 104.

[0024] After the blower 105, the pipeline 106, and the first metal hose 107 are connected to each other, the second metal hose 109 is connected to the elbow 202 through the joint 108. After all the connection processes are completed, an airtight test is performed to ensure that the sealing between the components is complete.

[0025] Finally, turn on the blower 105 to fill the pipe 106 with air and maintain pressure through the first metal hose 107, and then pass through the second metal hose 109 and the flange assembly 104 to force positive pressure air supply cooling to the grate sealing box 103 to form a stable output. When the grate driving rod 101 drives the grate driving beam 102 to reciprocate, it can effectively prevent air flow from overflowing and achieve a cooling effect.

[0026] The measured data are as follows:

[0027]

Claims

1. An airtight device suitable for an incineration grate furnace, characterized in that: It includes a blower, a pipeline, a first metal hose, a second metal hose, a flange assembly and a joint; The flange assembly includes a flange, a bent pipe, a positioning rib, a fixing nut, a connecting bolt, a vent, a slot and a sealing ring; the flange is divided into two parts and assembled by connecting nuts and connecting bolts; a slot for installing a sealing ring is provided inside the flange; The flange is provided with ventilation holes, and the elbow is welded to the reserved ventilation holes; the positioning rib is welded to the flange; the elbow is completely sealed with the ventilation holes on the flange; The positioning rib plate connects the flange and the sealing box; the connecting bolts and fixing nuts assemble the flange; The blower, the pipeline and the first metal hose are connected to each other, and the joint connects the second metal hose to the elbow.

2. The airtight device for an incineration grate furnace according to claim 1, characterized in that: After the sealing ring is sleeved on the reserved position of the grate driving rod, the grate driving rod is assembled and connected with the grate driving beam, and the grate sealing box is installed on the grate driving rod.

3. The airtight device for an incineration grate furnace according to claim 1, characterized in that: The flange is pre-installed outside the grate driving rod, and the sealing ring is pressed into the groove of the flange.

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