CN-224230693-U - Hearth of heating furnace

CN224230693UCN 224230693 UCN224230693 UCN 224230693UCN-224230693-U

Abstract

The utility model relates to a hearth of a heating furnace, which comprises a heat insulation substrate transversely arranged, an arch-shaped heat insulation cover arranged on the top of the heat insulation substrate, a heat insulation bottom plate transversely fixed on the top of the heat insulation substrate and positioned in the arch-shaped heat insulation cover, an arch-shaped furnace cover transversely arranged on the top of the heat insulation bottom plate and positioned in the arch-shaped heat insulation cover, and a feeding track transversely arranged on the top of the heat insulation bottom plate and positioned in the arch-shaped furnace cover, wherein the arch-shaped furnace cover comprises a plurality of arch-shaped refractory covers which are sequentially arranged end to end from front to back, and the feeding track comprises a plurality of feeding guide blocks which are sequentially arranged end to end from front to back.

Inventors

WANG YICUN
LU JINQI
WANG WEITING

Assignees

台州天巧自动化科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250509

Claims (5)

1. The hearth of the heating furnace is characterized by comprising a heat insulation substrate transversely arranged, an arched heat insulation cover arranged at the top of the heat insulation substrate, a heat insulation bottom plate transversely fixed at the top of the heat insulation substrate and positioned in the arched heat insulation cover, an arched furnace cover transversely arranged at the top of the heat insulation bottom plate and positioned in the arched heat insulation cover, and a feeding track transversely arranged at the top of the heat insulation bottom plate and positioned in the arched furnace cover, wherein a tunnel heating cavity is formed between the top of the feeding track and the inner wall of the arched furnace cover; The arched furnace cover comprises a plurality of arched fireproof covers which are sequentially arranged in an end-to-end mode from front to back, and the feeding track comprises a plurality of feeding guide blocks which are sequentially arranged in an end-to-end mode from front to back; Every the top of feeding guide block all is formed with a plurality of from left to right spacing groove that sets gradually, all forms a track groove between the spacing groove that is located on same horizontal straight line on every feeding guide block.
2. The hearth of a heating furnace according to claim 1, wherein a first slope which is arranged obliquely downward is formed downward at the edge of the rear end opening of each limit groove, and the end edge of the first slope on each limit groove is lower than the edge of the front end opening of one limit groove behind the first slope.
3. The hearth of a heating furnace of claim 2, wherein the end opening of said first ramp has a width greater than the width of the rear end opening of the spacing groove.
4. The furnace chamber of claim 1, wherein a second slope is formed between the left edge of the top opening of the leftmost one of the limit grooves and the top left edge of the feed guide block and between the right edge of the top opening of the rightmost one of the limit grooves and the top right edge of the feed guide block.
5. The furnace hearth of claim 1, further comprising an arched flame shield disposed between the arched heat shield and the arched furnace shield.

Description

Hearth of heating furnace Technical Field The application relates to the technical field of metal material heating equipment, in particular to a hearth of a heating furnace. Background The hot extrusion processing is very suitable for manufacturing metal parts with complex shapes, because the metal materials have better plasticity at high temperature and smaller deformation force, when in hot extrusion, the heated blank is put into an extrusion die, the blank is deformed according to the shape of a die cavity under the action of an extrusion rod, so that the shape of a required forging is obtained, and because before the hot extrusion processing, the metal bar is required to be cut into metal sections with the same length according to the size specification, and then the metal sections are sent into a heating furnace and heated to the specified temperature. At present, the heating mode of the heating furnace mainly comprises electric heating and fuel combustion heating, the heating speed of the electric heating is slower, the power is higher, a part of plants cannot load high-power current, the electric charge is also more expensive, the production cost is higher, the fuel combustion heating speed is fast, the unit price is low, and the production cost is relatively low, so most of the heating furnaces are preferably the fuel combustion heating mode. The prior heating furnace hearth is internally provided with a material guide plate so that the fed metal section materials move along the set direction, but the structure of the material guide plate is integrated, and in order to prolong the time of the metal section materials in the hearth, the length of the material guide plate is longer, and the material guide plate is made of refractory materials to resist high temperature, and the refractory materials on the market are brittle materials and have poor heat conductivity so as to lead the heat transfer speed to be slower, so that the material guide plate in the hearth is extremely easy to crack and break due to larger temperature difference, and has shorter service life. Disclosure of utility model Aiming at the current state of the prior art, the utility model aims to provide a heating furnace hearth which fully and reasonably utilizes the heat in the high-temperature tail gas which is directly discharged originally by means of a heat recovery system to greatly reduce the consumption of fuel, thereby achieving the purposes of energy conservation and environmental protection, effectively ensuring the production efficiency, effectively utilizing the heat radiated to the furnace body from the hearth to the outside by means of a waste heat circulation mechanism to further save the consumption of fuel, and simultaneously eliminating the potential safety hazard. The hearth of the heating furnace is characterized by comprising a heat insulation substrate transversely arranged, an arched heat insulation cover arranged at the top of the heat insulation substrate, a heat insulation bottom plate transversely fixed at the top of the heat insulation substrate and positioned in the arched heat insulation cover, an arched furnace cover transversely arranged at the top of the heat insulation bottom plate and positioned in the arched heat insulation cover, and a feeding track transversely arranged at the top of the heat insulation bottom plate and positioned in the arched furnace cover, wherein a tunnel heating cavity is formed between the top of the feeding track and the inner wall of the arched furnace cover; The arched furnace cover comprises a plurality of arched fireproof covers which are sequentially arranged in an end-to-end mode from front to back, and the feeding track comprises a plurality of feeding guide blocks which are sequentially arranged in an end-to-end mode from front to back; Every the top of feeding guide block all is formed with a plurality of from left to right spacing groove that sets gradually, all forms a track groove between the spacing groove that is located on same horizontal straight line on every feeding guide block. Preferably, a first slope which is obliquely arranged downwards is formed downwards at the edge of the opening at the rear end of each limiting groove, and the end edge of the first slope on each limiting groove is lower than the edge of the opening at the front end of one limiting groove behind the first slope. Preferably, the width of the opening at the end of the first slope is larger than the width of the opening at the rear end of the limit groove. Preferably, a second slope with a higher front and a lower rear is formed between the left side edge of the top opening of the leftmost limit groove and the top left side edge of the feeding guide block and between the right side edge of the top opening of the leftmost limit groove and the top right side edge of the feeding guide block. Preferably, the furnace cover also comprises an arch fire baffle plate arranged between the arch