CN210268257U

CN210268257U - Medium frequency electric furnace

Info

Publication number: CN210268257U
Application number: CN201921014067.5U
Authority: CN
Inventors: 胡文珠
Original assignee: Fujian Four Wheel Construction Machinery Co Ltd
Current assignee: Fujian Four Wheel Construction Machinery Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-07
Anticipated expiration: 2029-07-02

Abstract

The utility model provides an intermediate frequency electric furnace, which comprises a furnace body, wherein the upper end of the furnace body is a furnace cover, the furnace cover is connected with a heat recovery box body through an air duct, a heat exchanger is arranged in the heat recovery box body, the heat recovery box body is connected with an air filtering device through an exhaust pipe, the heat exchanger is respectively connected with a circulating water inlet pipe and a circulating water outlet pipe, the circulating water inlet pipe and the circulating water outlet pipe are both connected with a heating water tank, the circulating water inlet pipe is connected with a circulating water pump, the heating water tank is also connected with a water inlet pipe and a hot water outlet pipe, the water inlet pipe is connected with a water inlet electromagnetic valve, the hot water outlet pipe is connected with a water outlet electromagnetic valve and a water outlet pump, the heating water tank is also internally provided with a temperature, the water outlet pump, the temperature sensor, the lower liquid level sensor and the upper liquid level sensor are electrically connected. The utility model discloses water after the heating can directly use, and the combustion gas can not air pollution through the filtration.

Description

Medium frequency electric furnace

Technical Field

The utility model relates to a firing equipment field, in particular to intermediate frequency electric stove.

Background

The medium frequency electric furnace is a power supply device for converting power frequency 50HZ alternating current into medium frequency (more than 300HZ to 10000HZ), and is composed of a frequency conversion device, a furnace body, a furnace front control and the like, according to the basic principle of electromagnetic induction, three-phase power frequency alternating current is rectified and then converted into direct current, the direct current is converted into adjustable medium frequency current, the adjustable medium frequency current is supplied to a load composed of a capacitor and an induction coil, high-density magnetic lines are generated in the induction coil, metal materials contained in the induction coil are cut, and large eddy current is generated in the metal materials. The eddy current also has the properties of medium-frequency current, namely free electrons of metal flow in a metal body with resistance to generate heat, the metal is melted by the principle, and the equipment is widely applied in the casting industry.

Because the intermediate frequency electric stove is because the upper end fire door can discharge a large amount of gas in the use, contains a large amount of heats in the middle of these gases, consequently current intermediate frequency electric stove usually can set up a boiler, through having the leading-in boiler inside of a large amount of thermal gas with the upper end fire door and be used for heating hot water and recycle.

However, if the hot gas discharged from the medium frequency electric furnace is mixed with impurities such as smoke dust, and the hot gas is directly introduced into the boiler for heating hot water for reuse, the water in the boiler is not clean and cannot be directly used, and the impurities are easily accumulated in parts such as related pipelines, so that the service life of the parts such as the related pipelines is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides an intermediate frequency electric stove has solved prior art and has discharged a large amount of gaseous direct leading-in boilers inside with the intermediate frequency electric stove in the use for the hot water of heating is recycled, can make the water in the boiler unclean, unable direct utilization, also reduces the life's of parts such as relevant pipeline defect easily.

The technical scheme of the utility model is realized like this:

the medium frequency electric furnace comprises a furnace body, wherein the upper end of the furnace body is a furnace cover, the furnace cover is connected with a heat recovery box body through an air duct, a heat exchanger is arranged in the heat recovery box body, the heat recovery box body is connected with an exhaust pipe, the exhaust pipe is connected with an air filtering device, the heat exchanger is respectively connected with a circulating water inlet pipe and a circulating water outlet pipe, the circulating water inlet pipe and the circulating water outlet pipe are both connected with a heating water tank, the circulating water inlet pipe is connected with a circulating water pump, the heating water tank is also connected with a water inlet electromagnetic valve, the hot water outlet pipe is connected with a water outlet electromagnetic valve and a water outlet pump, a temperature sensor, a lower liquid level sensor and an upper liquid level sensor are also arranged in the heating water tank, the medium, the water outlet pump, the temperature sensor, the lower liquid level sensor and the upper liquid level sensor are electrically connected.

Further, heat insulation layers are arranged outside the heat recovery tank body and the heating water tank.

Further, the heat-insulating layer is made of heat-insulating cotton.

Further, the heat exchanger is an air heat exchanger.

Furthermore, the air filtering device comprises an outer box body and a filtering core arranged in the outer box body.

The utility model has the advantages that: the hot gas discharged from the furnace body of the utility model is not in direct contact with the water in the heating water tank, and ensures that the heated water can be directly used through the heat exchange of the heat exchanger, protects the relevant parts such as pipelines and the like, and prolongs the service life; in addition, the gas is filtered by the air filtering device before being discharged, so that the discharged gas is ensured not to pollute the air, and the environment is protected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the intermediate frequency furnace of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the medium frequency electric furnace includes a furnace body 1, the upper end of the furnace body 1 is a furnace cover 11, the furnace cover 11 is connected with a heat recovery box 2 through an air duct 12, a heat exchanger 3 is arranged in the heat recovery box 2, the heat recovery box 2 is connected with an exhaust pipe 21, the exhaust pipe 21 is connected with an air filtering device 4, the heat exchanger 3 is respectively connected with a circulating water inlet pipe 31 and a circulating water outlet pipe 32, the circulating water inlet pipe 31 and the circulating water outlet pipe 32 are both connected with a heating water tank 5, the circulating water inlet pipe 31 is connected with a circulating water pump 6, the heating water tank 5 is also connected with a water inlet pipe 51 and a hot water outlet pipe 52, the water inlet pipe 51 is connected with a water inlet electromagnetic valve 53, the hot water outlet pipe 52 is connected with a water outlet electromagnetic valve 54 and a water outlet pump 55, the heating water tank 5 is also provided with a, The water inlet solenoid valve 53, the water outlet solenoid valve 54, the water outlet pump 55, the temperature sensor 56, the lower liquid level sensor 57 and the upper liquid level sensor 58 are electrically connected. Wherein, the controller can select a singlechip or a PLC controller.

Preferably, heat insulation layers (not shown) are arranged outside the heat recovery tank body 2 and the heating water tank 5, so that heat loss can be reduced; the heat-insulating layer is made of heat-insulating cotton, and can be made of other heat-insulating materials.

Preferably, the heat exchanger 3 is an air heat exchanger.

Preferably, the air filter device 4 includes an outer case (not shown) and a filter element (not shown) provided in the outer case.

When the utility model is used, the hot gas discharged from the furnace body 1 enters the heat recovery box body 2 through the air duct 12 and exchanges heat with the heat exchanger 3 in the heat recovery box body 2, and the water in the heating water tank 5 continuously circulates through the heat exchanger under the action of the circulating water pump 6 to absorb the heat transferred by the hot gas, and the heated water can be directly used because the hot gas is not in direct contact with the water in the heating water tank 5, and related parts such as pipelines and the like are protected, thereby prolonging the service life; in addition, the hot gas is led to the air filtering device 4 through the exhaust pipe 21 after heat exchange is finished, and is filtered by the air filtering device 4 before being exhausted, so that the exhausted gas is prevented from polluting the air, and the environment is protected; when the water level in the heating water tank 5 is lower than the lower liquid level sensor 57, the controller controls the water inlet solenoid valve 53 to open and add water, and when the water level is higher than the upper liquid level sensor 58, the controller controls the water inlet solenoid valve 53 to close.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The intermediate frequency electric furnace is characterized in that: the induction cooker comprises a cooker bod, the furnace body upper end is the bell, the bell passes through air duct and heat recovery box body coupling, be provided with the heat exchanger in the heat recovery box body, heat recovery box body coupling has the blast pipe, air filter is connected to the blast pipe, the heat exchanger is respectively with circulation inlet tube and circulation outlet union coupling, circulation inlet tube and circulation outlet pipe all are connected with heating water tank, be connected with circulating water pump on the circulation inlet tube, heating water tank still is connected with inlet tube and hot water exit tube, be connected with the solenoid valve of intaking on the inlet tube, be connected with water outlet solenoid valve and water outlet pump on the hot water exit tube, still be provided with temperature sensor in the heating water tank, lower level sensor and last level sensor, still include the controller, the controller respectively with circulating water pump, the solenoid valve of intaking, water outlet solenoid valve, water outlet pump, temperature.

2. The medium frequency electric furnace of claim 1, wherein: and heat insulation layers are arranged outside the heat recovery tank body and the heating water tank.

3. The medium frequency electric furnace of claim 2, wherein: the heat preservation layer is made of heat preservation cotton.

4. The medium frequency electric furnace of claim 1, wherein: the heat exchanger is an air heat exchanger.

5. The medium frequency electric furnace according to any one of claims 1 to 4, wherein: the air filtering device comprises an outer box body and a filter element arranged in the outer box body.