Waste incineration power generation iron removal grab bucket

Abstract

This waste-to-energy incineration grab bucket, belonging to the field of waste incineration technology, removes iron impurities before the waste enters the furnace. It includes a multi-lobed grab bucket body and a disc-type electromagnetic separator. The grab bucket body's oil tank sidewall extends downwards to form an extension. An opening is made in the extension, which connects to the lifting lugs of the disc-type electromagnetic separator via a pin. A slot is formed on the pin, and the pin is fixed to the extension via the slot and a plate. The multi-lobed claws of the multi-lobed grab bucket body are made of non-magnetic stainless steel, and the pins of the multi-lobed claws and the extension on the grab bucket oil tank are also made of stainless steel. An oil drain plug is installed on the sidewall of the grab bucket oil tank. This invention adds a disc-type electromagnetic separator to the top of the grab bucket lobe core to suck out iron impurities from the waste, thereby reducing unburned solid particles in the waste entering the furnace, improving the safe and stable operation time of the mechanical grate furnace, and ensuring the operational profitability of the waste-to-energy incineration plant.

Description

Technical Field

[0001] This utility model belongs to the field of waste incineration technology, specifically relating to a waste incineration power generation iron removal grab bucket. Background Technology

[0002] Currently, most waste-to-energy plants use mechanical grate furnaces, which are the core equipment of these plants.

[0003] The waste that is incinerated consists of various wastes generated in people's production and daily life. It has a complex composition, including metal debris, with iron being the most abundant component.

[0004] During the incineration of waste in a mechanical grate furnace, iron debris and other unburned solid particles mix together and can easily get trapped in the gaps between the grate bars, causing abnormal wear such as uneven wear. After the grate bars wear down, not only do the gaps between the bars widen, but in severe cases, the grate bars may warp and burn, directly leading to increased slag leakage and negatively impacting the waste's loss on ignition rate. When the grate bars experience extensive wear, the furnace should be shut down for inspection and repair, as this will affect the operation of the waste-to-energy plant.

[0005] Unburnable solid particles such as metal debris are a major factor that negatively impacts the safe and stable operation of mechanical grate furnaces. Therefore, removing iron debris before waste is fed into the furnace is of utmost importance. Summary of the Invention

[0006] In order to solve the above problems, this utility model provides a waste incineration power generation iron removal grab bucket that can remove iron impurities before the waste is put into the furnace for incineration.

[0007] The technical solution adopted by this utility model is:

[0008] A waste incineration power generation iron removal grab includes a multi-lobed grab body and a disc-type electromagnetic iron separator; the grab oil tank sidewall of the multi-lobed grab body extends downward to form an extension, and a hole is opened on the extension of the grab oil tank to be connected to the lifting lug of the disc-type electromagnetic iron separator by a pin, and a slot is opened on the pin, and the pin is fixed on the extension by the slot and the insert plate.

[0009] The multi-lobed claws of the multi-lobed grab body are made of non-magnetic stainless steel, and the pins of the multi-lobed claws and the extensions on the grab oil tank are also made of stainless steel.

[0010] Furthermore, the drain plug of the grab bucket oil tank is installed on the side wall of the grab bucket oil tank, and the threaded hole for installing the drain plug is flush with the bottom plate of the grab bucket oil tank.

[0011] Furthermore, the control switch of the disc-type electromagnetic separator is directly installed in the grab crane's cab.

[0012] Furthermore, the control of the disc electromagnetic separator is set to normally off, and a switch cover is installed to prevent misoperation; the rectifier control cabinet of the disc electromagnetic separator is installed next to the control cabinet of the grab crane, and the control line of the rectifier cabinet is connected to the crane control room and connected to the control switch.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] When municipal solid waste enters the waste pool of a waste-to-energy plant, it is transported through a multi-lobed grab bucket within the pool and hoisted into the furnace. This invention modifies the existing electro-hydraulic multi-lobed grab bucket by adding a disc-type electromagnetic separator to the top of the grab bucket's lobe core. This separator removes iron impurities from the waste, thereby reducing unburned solid particles in the waste entering the furnace, improving the safe and stable operation time of the mechanical grate furnace, and ensuring the operational profitability of the waste-to-energy plant. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of an existing multi-lobed grab bucket structure;

[0017] Among them: 1. Multi-lobed grab bucket body; 101. Grab bucket oil tank; 102. Extension section; 103. Multi-lobed claw; 104. Oil drain plug; 2. Disc-type electromagnetic separator; 201. Lifting lug. Detailed Implementation

[0018] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, this utility model provides a waste incineration power generation iron removal grab bucket, including a multi-lobed grab bucket body 1 and a disc-type electromagnetic iron separator 2; the side wall of the grab bucket oil tank 101 of the multi-lobed grab bucket body 1 extends downward by about 60mm to form an extension 102, the position of the bottom plate of the grab bucket oil tank 101 remains unchanged, and the volume of the grab bucket oil tank 101 remains unchanged; (refer to...) Figure 1 , Figure 2 (In contrast) A hole is made in the extension 102 of the grab bucket oil tank 101, which is connected to the lifting lug 201 of the disc electromagnetic iron separator 2 by a pin, and a slot is made in the pin. The pin is fixed to the extension 102 by the slot and the insert plate.

[0020] The multi-lobed claws 103 (i.e., 6 movable claws) of the multi-lobed grab body 1 are made of non-magnetic stainless steel, which can increase the corrosion resistance and strength of the multi-lobed claws 103, and also avoid the influence of electromagnets on the normal gripping of the multi-lobed claws 103. The pin connection structure between the stainless steel multi-lobed claws 103 and the original grab hydraulic oil tank remains unchanged. The pins of the multi-lobed claws 103 and the extensions 102 on the grab oil tank 101 are both made of stainless steel, which improves the connection strength.

[0021] The drain plug 104 of the grab bucket oil tank 101 is installed on the side wall of the grab bucket oil tank 101, and the threaded hole for installing the drain plug 104 is flush with the bottom plate of the grab bucket oil tank 101. If it is necessary to drain the oil in the grab bucket oil tank 101 during maintenance, the grab bucket oil tank 101 can be tilted appropriately until the oil is drained. The drain plug 104 installed on the side wall is less likely to be bumped than the original one installed at the bottom. The specifications and form of the drain plug 104 remain unchanged, and it can still be a screw.

[0022] The disc-type electromagnetic separator 2 is equipped with an independent control system. The control switch of the disc-type electromagnetic separator 2 is directly installed in the grab crane cab. The control switch of the disc-type electromagnetic separator 2 is fixed with bolts next to the operating panel in the existing grab crane cab or in a convenient location. The power control line of the disc-type electromagnetic separator 2 can be arranged in parallel with the grab bucket electric hydraulic control line. The cable type and its installation are the same as the standard of the grab bucket electric hydraulic control line.

[0023] The control of the disc electromagnetic separator 2 is set to normally off, and a switch cover is installed to prevent misoperation. The disc electromagnetic separator 2 is magnetic when energized and demagnetized when de-energized. The AC power is rectified to power the electromagnet. The rectifier control cabinet of the disc electromagnetic separator 2 is installed next to the control cabinet of the grab crane. The control line of the rectifier cabinet is connected to the crane control room and connected to the control switch. The control switch can be used to control the electromagnet without the need for relays / contaminators or PLC. When there is a lot of iron debris on the electromagnet or before the end of each shift, the grab bucket is moved to the designated location for unloading iron and the power is turned off to unload iron.

[0024] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A waste incineration power generation iron removal grab bucket, characterized in that: It includes a multi-lobed grab bucket body (1) and a disc-type electromagnetic separator (2); the side wall of the grab bucket oil tank (101) of the multi-lobed grab bucket body (1) extends downward to form an extension (102), and a hole is opened on the extension (102) of the grab bucket oil tank (101) to be connected to the lifting lug (201) of the disc-type electromagnetic separator (2) by a pin, and a slot is opened on the pin, and the pin is fixed on the extension (102) by the slot and the insert plate; The multi-lobed claw (103) of the multi-lobed grab body (1) is made of non-magnetic stainless steel, and the pin of the multi-lobed claw (103) and the extension (102) on the grab oil tank (101) are also made of stainless steel.

2. The waste incineration power generation iron removal grab bucket according to claim 1, characterized in that: The drain plug (104) of the grab oil tank (101) is installed on the side wall of the grab oil tank (101), and the threaded hole for installing the drain plug (104) is flush with the bottom plate of the grab oil tank (101).

3. The waste incineration power generation iron removal grab bucket according to claim 1, characterized in that: The control switch of the disc electromagnetic separator (2) is directly installed in the cab of the grab crane.

4. The waste incineration power generation iron removal grab bucket according to claim 3, characterized in that: The control of the disc electromagnetic separator (2) is set to normally closed, and a switch cover is set to avoid misoperation; the rectifier control cabinet of the disc electromagnetic separator (2) is installed next to the control cabinet of the grab crane, and the control line of the rectifier cabinet is connected to the crane control room and connected to the control switch.

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