Electric heat preservation furnace

Abstract

The utility model discloses an electric heat preservation furnace which comprises a furnace body, a furnace body heat preservation cover, a heating rod and a blanking hopper, a hearth is arranged in the furnace body, the furnace body heat preservation cover covers the hearth, the heating rod is installed in the furnace body heat preservation cover, the blanking hopper is communicated with the interior of the hearth, and the blanking hopper is composed of an inner barrel hopper and a heat preservation shell. A spiral partition plate is installed between the inner barrel hopper and the heat preservation shell and divides a gap between the inner barrel hopper and the heat preservation shell into a spiral channel, an air channel is formed in the inner wall of an upper end opening of the furnace body, and the air channel is communicated with the spiral channel through an induced draft fan. According to the utility model, the induced draft fan and the air channel are arranged to introduce waste heat in the hearth into the interlayer of the blanking hopper so as to heat the interior of the blanking hopper, so that materials fed from the blanking hopper can be preheated, the temperature difference is reduced, the heating energy consumption in the furnace is reduced, and meanwhile, waste heat flows back into the hearth after passing through the spiral channel and are repeatedly heated; and cyclic utilization is realized.

Description

Technical Field

[0001] This utility model relates to the field of casting processing equipment technology, and in particular to electric heat preservation furnaces. Background Technology

[0002] In the aluminum alloy casting process, it is usually necessary to keep the molten aluminum warm in order to facilitate subsequent processes. Electric holding furnace is a common type of molten aluminum holding equipment. The main structure of an electric holding furnace includes a furnace body, a holding cover, a heating element, and a hopper. The heating element heats and keeps the molten aluminum in the furnace chamber, while the hopper is used to feed the aluminum parts to be melted into the furnace chamber.

[0003] However, in order to facilitate material feeding by workers, the hopper of existing electric heating furnaces is generally located at the edge of the furnace, away from the heating element, in order to reduce heat loss in the furnace when the hopper is opened during feeding. The heat generated by the heating element is concentrated in the middle of the furnace, making it difficult to use residual heat to preheat the material falling into the hopper. The temperature difference between the material and the furnace is large, which increases the heating energy consumption in the furnace.

[0004] Therefore, we propose an electric heat preservation furnace to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an electric heat preservation furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electric heat preservation furnace includes a furnace body, a furnace body insulation cover, a heating rod, and a material hopper. The furnace body has a furnace chamber, and the furnace body insulation cover covers the furnace chamber. The heating rod is installed inside the furnace body insulation cover. The material hopper is connected to the furnace chamber and consists of an inner cylinder hopper and an insulation shell. A spiral partition is installed between the inner cylinder hopper and the insulation shell, which divides the gap between the inner cylinder hopper and the insulation shell into a spiral channel. An air passage is opened on the inner wall of the upper port of the furnace body, and the air passage is connected to the spiral channel by an induced draft fan.

[0008] In a further embodiment, the lower edge of the inner cylinder bucket is provided with several air holes, and the air holes are connected to the furnace and the spiral channel. Several protruding fins are also distributed on the outer wall of the inner cylinder bucket facing the spiral channel.

[0009] In a further embodiment, a hopper insulation cover is hinged to the upper port of the hopper.

[0010] In a further embodiment, wiring covers are symmetrically installed on both sides of the furnace body insulation cover.

[0011] In a further embodiment, a slag-removing and door-opening cylinder is installed on the outer side of the furnace body. The output end of the slag-removing and door-opening cylinder is hinged to the outer side of the furnace body insulation cover, and one side edge of the furnace body insulation cover is hinged to the edge of the upper port of the furnace body.

[0012] In a further embodiment, a soup inlet heat preservation cover is installed at the soup inlet of the stove body.

[0013] In a further embodiment, the furnace body is also equipped with an aluminum liquid temperature probe that extends into the furnace chamber.

[0014] In a further embodiment, the bottom of the furnace body is equipped with several lifting and adjusting feet.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention introduces the waste heat in the furnace into the jacket of the hopper by setting up an induced draft fan and air duct, thereby heating the material fed from the hopper. This allows the material to be preheated, reducing the temperature difference and lowering the energy consumption for heating in the furnace. At the same time, the waste heat airflow returns to the furnace after passing through the spiral channel and is reheated, achieving recycling. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the right side view of the present invention;

[0019] Figure 3 This is a schematic diagram of the right-side interface structure of this utility model;

[0020] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Furnace body; 2. Furnace chamber; 3. Furnace body insulation cover; 4. Heating rod; 5. Feed hopper; 51. Inner cylinder hopper; 511. Air vent; 512. Fin; 52. Spiral baffle; 53. Insulation shell; 6. Air duct; 7. Exhaust fan; 8. Feed hopper insulation cover; 9. Wiring cover; 10. Slag removal and opening cylinder; 11. Soup outlet insulation cover; 12. Aluminum liquid temperature probe; 13. Lifting and adjusting feet. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 The electric heat preservation furnace includes a furnace body 1, a furnace body insulation cover 3, a heating rod 4, and a feeding hopper 5. The furnace body 1 contains a furnace chamber 2, and the furnace body insulation cover 3 covers the furnace chamber 2. The heating rod 4 is installed inside the furnace body insulation cover 3. Specifically, the heating rod 4 is a silicon carbide rod used to provide heat preservation. The feeding hopper 5 is connected to the furnace chamber 2 and is located on the furnace body 1, on the side of the furnace body insulation cover 3. The feeding hopper 5 consists of an inner cylinder hopper 51 and an insulation shell 53. The inner cylinder hopper 51 is made of a metal material with high thermal conductivity, while the insulation shell 53 is made of nano-aerogel. Alternatively, composite ceramic fibers can be used to reduce heat loss. A spiral baffle 52 is installed between the inner cylinder hopper 51 and the insulation shell 53. This spiral baffle 52 divides the gap between the inner cylinder hopper 51 and the insulation shell 53 into a spiral channel. An air passage 6 is provided on the inner wall of the upper port of the furnace body 1. The air passage 6 is connected to the spiral channel through an induced draft fan 7. When the induced draft fan 7 is working, it can transfer the residual heat in the furnace chamber 2 to the spiral channel through the air passage 6. When the hot air flows through the inside of the spiral channel, it heats the inner cylinder hopper 51, thereby preheating the material that is fed in.

[0026] Furthermore, the lower edge of the inner cylinder hopper 51 is provided with several air holes 511, and the air holes 511 are connected to the furnace chamber 2 and the spiral channel, so that the hot air flow can flow back into the furnace chamber 2 after passing through the inside of the spiral channel. The outer wall of the inner cylinder hopper 51 facing the spiral channel is also provided with several protruding fins 512, which can increase the heat exchange area and facilitate the preheating effect of the input materials.

[0027] The upper end of the discharge hopper 5 is hinged with a discharge hopper insulation cover 8, which facilitates the sealing and insulation of the discharge hopper 5.

[0028] The furnace body insulation cover 3 is symmetrically equipped with wiring covers 9 on both sides to facilitate sealing of electrical connections and prevent heat loss from gaps.

[0029] A slag-removing and door-opening cylinder 10 is installed on the outer side of the furnace body 1. The output end of the slag-removing and door-opening cylinder 10 is hinged to the outer side of the furnace body insulation cover 3, and one side edge of the furnace body insulation cover 3 is hinged to the upper port edge of the furnace body 1. The furnace body insulation cover 3 is rotated and opened by the extension of the slag-removing and door-opening cylinder 10. The opening and closing is quick during operation, reducing the opening and closing time and frequency, and reducing heat loss.

[0030] A soup outlet heat preservation cover 11 is installed at the soup outlet of the furnace body 1 to facilitate sealing and heat preservation of the soup outlet.

[0031] The furnace body 1 is also equipped with an aluminum liquid temperature probe 12 that extends into the furnace chamber 2 for real-time monitoring of the aluminum liquid temperature.

[0032] Several lifting and adjusting feet 13 are installed at the bottom of the furnace body 1 to ensure that the furnace body 1 is placed horizontally and to avoid uneven temperature distribution.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electric heat preservation furnace, comprising a furnace body (1), a furnace body heat preservation cover (3), a heating rod (4), and a material hopper (5), wherein the furnace body (1) is provided with a furnace chamber (2), and the furnace body heat preservation cover (3) covers the furnace chamber (2), the heating rod (4) is installed inside the furnace body heat preservation cover (3), and the material hopper (5) is connected to the furnace chamber (2), characterized in that: The material hopper (5) consists of an inner cylinder hopper (51) and an insulation shell (53), and a spiral partition (52) is installed between the inner cylinder hopper (51) and the insulation shell (53). The spiral partition (52) divides the gap between the inner cylinder hopper (51) and the insulation shell (53) into a spiral channel. An air passage (6) is provided on the inner wall of the upper port of the furnace body (1), and the air passage (6) is connected to the spiral channel through an induced draft fan (7).

2. The electric heat preservation furnace according to claim 1, characterized in that: The lower edge of the inner cylinder hopper (51) is provided with several air holes (511), and the air holes (511) are connected to the furnace (2) and the spiral channel. The outer wall of the inner cylinder hopper (51) facing the spiral channel is also provided with several protruding fins (512).

3. The electric heat preservation furnace according to claim 1, characterized in that: The upper end of the hopper (5) is hinged with a hopper insulation cover (8).

4. The electric heat preservation furnace according to claim 1, characterized in that: Wiring covers (9) are symmetrically installed on both sides of the furnace body insulation cover (3).

5. The electric heat preservation furnace according to claim 1, characterized in that: A slag-removing and door-opening cylinder (10) is installed on the outer side of the furnace body (1). The output end of the slag-removing and door-opening cylinder (10) is hinged to the outer side of the furnace body insulation cover (3), and one side edge of the furnace body insulation cover (3) is hinged to the upper port edge of the furnace body (1).

6. The electric heat preservation furnace according to claim 1, characterized in that: The soup inlet of the furnace body (1) is equipped with a soup inlet heat preservation cover (11).

7. The electric heat preservation furnace according to claim 1, characterized in that: The furnace body (1) is also equipped with an aluminum liquid temperature probe (12) that extends into the furnace chamber (2).

8. The electric heat preservation furnace according to claim 1, characterized in that: The bottom of the furnace body (1) is equipped with several lifting and adjusting feet (13).

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