CN219223252U

CN219223252U - Energy-saving box type muffle furnace

Info

Publication number: CN219223252U
Application number: CN202222792025.2U
Authority: CN
Inventors: 黄卓成; 赵宋奇; 潘能; 徐培佶; 郑敏; 仰琪华
Original assignee: Huzhou Standard Spectrum Environmental Testing Technology Co ltd
Current assignee: Huzhou Standard Spectrum Environmental Testing Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-06-20
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses an energy-saving box-type muffle furnace, which comprises a box body (1), wherein a furnace cavity (2) is arranged in the box body (1), a furnace cover (3) is arranged on the front surface of the furnace cavity (2), an electric heating part (4) is arranged on the top wall of the furnace cavity (2), a base (5) is arranged on the bottom surface of the furnace cavity (2), air vents (6) are arranged on two sides of the furnace cavity (2), an opening and closing plate (7) is arranged on the inner side of the air vents (6), and an opening and closing driving assembly (8) is arranged between the opening and closing plate (7) and the furnace cavity (2); the waste heat recovery heat preservation box is characterized in that a waste heat recovery heat preservation box (9) is further arranged in the box body (1), two ends of the waste heat recovery heat preservation box (9) are respectively connected with the air vent (6) through air pipes (10), and an exhaust fan (11) is arranged on one air pipe (10). The utility model has the characteristic of effectively reducing energy consumption.

Description

Energy-saving box type muffle furnace

Technical Field

The utility model relates to a muffle furnace, in particular to an energy-saving box-type muffle furnace.

Background

The muffle furnace is a general heating device and can be divided into a box furnace, a tube furnace and a crucible furnace according to the appearance shape; the method is mainly applied to 1) hot working, industrial workpiece treatment, cement and building material industries, and is used for hot working or treatment of small-sized workpieces; 2) The pharmaceutical industry: used for the inspection of medicines, the pretreatment of medical samples, etc.; 3) Analytical chemistry industry: the method can be used for sample treatment in the fields of water quality analysis, environmental analysis and the like, and can also be used for petroleum and analysis thereof; 4) Analysis of coal quality: the method is used for measuring moisture, ash, volatile matters, ash melting point analysis, ash component analysis and element analysis. However, after the existing muffle furnace is used, the heat in the muffle furnace can be emitted along with the opening of the furnace cover, and when the muffle furnace is used next time, the temperature in the furnace cavity needs to be heated from the room temperature to the designated temperature, so that the heat utilization rate is low, and the energy consumption is high. Therefore, the prior art has the problem of high energy consumption.

Disclosure of Invention

The utility model aims to provide an energy-saving box type muffle furnace. The utility model has the characteristic of effectively reducing energy consumption.

The technical scheme of the utility model is as follows: the energy-saving box-type muffle furnace comprises a box body, wherein a furnace cavity is arranged in the box body, a furnace cavity cover is arranged on the front surface of the furnace cavity, an electric heating piece is arranged on the top wall of the furnace cavity, a base is arranged on the bottom surface of the furnace cavity, air vents are arranged on two sides of the furnace cavity, an opening and closing plate is arranged on the inner side of the air vents, and an opening and closing driving assembly is arranged between the opening and closing plate and the furnace cavity; the waste heat recovery heat preservation box is further arranged in the box body, two ends of the waste heat recovery heat preservation box are respectively connected with the air vent through the air pipes, and an exhaust fan is arranged on one of the air pipes.

In the energy-saving box-type muffle furnace, the outer side wall of the furnace cavity is provided with an aerogel felt layer and heat-insulating cotton in sequence.

In the energy-saving box-type muffle furnace, the opening and closing driving assembly comprises a guide rod arranged on the opening and closing plate, and a limiting ring positioned outside the hearth cavity is arranged at the other end of the guide rod; the outside of the hearth cavity is provided with a hydraulic telescopic rod matched with the limiting ring, and the output end of the hydraulic telescopic rod is fixed with the limiting ring.

In the energy-saving box type muffle furnace, the waste heat recovery insulation box comprises an insulation box body, and an insulation layer is arranged on the outer wall of the insulation box body; a group of serpentine heat exchange tubes which are uniformly distributed are further arranged in the heat preservation box body, and heat storage liquid is arranged in each serpentine heat exchange tube.

Compared with the prior art, the utility model realizes recycling of the temperature of the waste gas in the hearth cavity by arranging the air vents, the opening and closing plates, the opening and closing driving assembly and the waste heat recovery heat preservation box on two sides of the hearth cavity, and when an object needs to be heated next time, the temperature in the hearth cavity is increased by preheating the hearth cavity in the waste heat recovery heat preservation box through gas circulation, so that the energy consumption of an electric heating element can be reduced, and the energy utilization rate is improved. In conclusion, the utility model has the characteristic of effectively reducing energy consumption.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an internal view of the present utility model;

fig. 3 is a partial enlarged view of fig. 2.

The marks in the drawings are: 1-box, 2-hearth cavity, 3-hearth cover, 4-electric heating piece, 5-base, 6-vent, 7-opening and closing plate, 8-opening and closing driving component, 9-waste heat recovery insulation box, 10-gas pipe, 11-exhaust fan, 12-aerogel felt layer, 13-heat insulation cotton, 14-guide rod, 15-limit ring, 16-hydraulic telescopic rod, 901-insulation box, 902-insulation layer and 903-serpentine heat exchange pipe.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

Examples. The energy-saving box-type muffle furnace is shown in fig. 1-3, and comprises a box body 1, wherein a furnace cavity 2 is arranged in the box body 1, a furnace cover 3 is arranged on the front surface of the furnace cavity 2, an electric heating piece 4 is arranged on the top wall of the furnace cavity 2, a base 5 is arranged on the bottom surface of the furnace cavity 2, air vents 6 are arranged on two sides of the furnace cavity 2, an opening and closing plate 7 is arranged on the inner side of the air vents 6, and an opening and closing driving assembly 8 is arranged between the opening and closing plate 7 and the furnace cavity 2; the box body 1 is also internally provided with a waste heat recovery heat preservation box 9, two ends of the waste heat recovery heat preservation box 9 are respectively connected with the air vent 6 through air pipes 10, and one air pipe 10 is provided with an exhaust fan 11.

The outer side wall of the hearth cavity 2 is provided with an aerogel felt layer 12 and heat preservation cotton 13 in sequence.

The opening and closing driving assembly 8 comprises a guide rod 14 arranged on the opening and closing plate 7, and a limiting ring 15 positioned outside the hearth cavity 2 is arranged at the other end of the guide rod 14; the outside of the hearth cavity 2 is provided with a hydraulic telescopic rod 16 matched with the limiting ring 15, and the output end of the hydraulic telescopic rod 16 is fixed with the limiting ring 15.

The waste heat recovery heat preservation box 9 comprises a heat preservation box body 901, and a heat preservation layer 902 is arranged on the outer wall of the heat preservation box body 901; a group of serpentine heat exchange tubes 903 which are uniformly distributed are further arranged in the heat insulation box 901, and heat storage liquid is arranged in the serpentine heat exchange tubes 903.

The application process of the utility model comprises the following steps: when the hearth cavity is internally heated, the opening and closing driving assembly drives the opening and closing plate to be opened, the exhaust fan works, so that air in the hearth cavity and air in the waste heat recovery heat insulation box flow, heat exchange between two air flows first, then the air exchanges heat with heat storage liquid in the coiled pipe, and the temperature in the hearth cavity is raised through circulation of the air. Then, the electric heating assembly starts heating, and the object to be heated is heated to a specified temperature. After heating is finished, before the hearth cover is opened, the opening and closing driving assembly can drive the opening and closing plate to stretch out and draw back, the opening and closing driving assembly is attached to the air vent, the air vent is closed, high-temperature gas is sealed in the waste heat recovery heat insulation box, the opening and closing plate is opened to release to the hearth cavity for cyclic heating when the hearth cover is heated next time, and cyclic utilization of waste heat is achieved.

Claims

1. Energy-saving box muffle furnace, its characterized in that: the furnace comprises a box body (1), wherein a furnace cavity (2) is arranged in the box body (1), a furnace cover (3) is arranged on the front surface of the furnace cavity (2), an electric heating part (4) is arranged on the top wall of the furnace cavity (2), a base (5) is arranged on the bottom surface of the furnace cavity (2), air vents (6) are arranged on two sides of the furnace cavity (2), an opening and closing plate (7) is arranged on the inner side of the air vents (6), and an opening and closing driving assembly (8) is arranged between the opening and closing plate (7) and the furnace cavity (2); the waste heat recovery heat preservation box is characterized in that a waste heat recovery heat preservation box (9) is further arranged in the box body (1), two ends of the waste heat recovery heat preservation box (9) are respectively connected with the air vent (6) through air pipes (10), and an exhaust fan (11) is arranged on one air pipe (10).

2. The energy efficient box muffle of claim 1, wherein: the outer side wall of the hearth cavity (2) is provided with an aerogel felt layer (12) and heat preservation cotton (13) in sequence.

3. The energy efficient box muffle of claim 1, wherein: the opening and closing driving assembly (8) comprises a guide rod (14) arranged on the opening and closing plate (7), and a limiting ring (15) positioned outside the hearth cavity (2) is arranged at the other end of the guide rod (14); the outside of the hearth cavity (2) is provided with a hydraulic telescopic rod (16) matched with the limiting ring (15), and the output end of the hydraulic telescopic rod (16) is fixed with the limiting ring (15).

4. The energy efficient box muffle of claim 1, wherein: the waste heat recovery heat insulation box (9) comprises a heat insulation box body (901), and an insulation layer (902) is arranged on the outer wall of the heat insulation box body (901); a group of serpentine heat exchange tubes (903) which are uniformly distributed are further arranged in the heat insulation box body (901), and heat storage liquid is arranged in the serpentine heat exchange tubes (903).