Waste heat recovery device for medium-frequency electric furnace

Abstract

The utility model discloses a waste heat recovery device of a medium-frequency electric furnace, which relates to the field of medium-frequency electric furnaces and comprises a water tank, a water inlet pipe is welded on one side of the water tank, and the outer wall of the water inlet pipe is fixedly connected with a first plug sleeve. The cold and hot water pipes are arranged to connect the separation box, when the device is used, the internal structure of the separation box is arranged to facilitate rapid recovery of waste heat, increase of the heat conduction contact surface and improvement of the practicability of the device, the separation box is arranged to move the heat conduction copper frame, and when the device is used, the heat conduction copper frame is not prone to falling off. The arrangement of a separation box and a heat conduction copper frame facilitates fitting heat conduction of medium-frequency electric furnaces of different sizes, the usability of the device is improved, a waste heat recovery box is arranged to achieve a tight fitting effect on an aluminum silicate fiber sleeve, when the device is used, the arrangement of the waste heat recovery box and the aluminum silicate fiber sleeve facilitates reduction of waste heat loss, and the service life of the device is prolonged. And heat preservation is facilitated, and the usability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of medium frequency electric furnaces, in particular to a waste heat recovery device for medium frequency electric furnaces. Background Art

[0002] In modern industrial production, medium frequency electric furnaces are an important metal smelting equipment and are widely used in casting, forging, steel and other industries. However, medium frequency electric furnaces generate a lot of waste heat during operation, which is directly discharged into the environment, which not only causes a huge waste of energy, but also increases the production cost and environmental burden of enterprises. Therefore, a medium frequency electric furnace waste heat recovery device is needed.

[0003] The existing patent document with technical announcement number CN216282834U provides a medium frequency electric furnace waste heat recovery device, which relates to the technical field of medium frequency electric furnaces. The medium frequency electric furnace waste heat recovery device includes a first support frame, a medium frequency electric furnace body is arranged at the bottom of the longitudinal plate of the first support frame, the medium frequency electric furnace body is located inside the first support frame, and a second support frame is arranged on the top of the first support frame. The medium frequency electric furnace waste heat recovery device scrapes and cleans the scale on the inner wall of the heating barrel by a scraper, and at the same time, the cleaning frame can use a brush to clean the scale remaining after the scraper scrapes, thereby making it more convenient to clean the inner wall of the heating barrel, and to a certain extent reducing the situation where the waste heat utilization rate of the heating barrel for the medium frequency electric furnace body due to the scale decreases, so that the staff can more smoothly utilize the waste heat of the medium frequency electric furnace body and clean the inner wall of the heating barrel more conveniently. However, when the CN216282834U technology is operated, it is not convenient to fit and conduct heat to medium frequency electric furnaces of different sizes, it is not convenient to reduce waste heat loss, it is not convenient to quickly recover waste heat, and there are fewer heat conduction contact surfaces. Therefore, a medium frequency electric furnace waste heat recovery device is urgently needed. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a medium frequency electric furnace waste heat recovery device to solve the problems that the existing medium frequency electric furnace waste heat recovery device is not convenient for fitting and heat conducting to medium frequency electric furnaces of different sizes when in use, is not convenient for reducing waste heat loss, is not convenient for quickly recovering waste heat, and has a small heat conduction contact surface.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medium frequency electric furnace waste heat recovery device, comprising a water tank, a water inlet pipe is welded to one side of the water tank, the outer wall of the water inlet pipe is fixedly connected to a first plugging sleeve, a water outlet pipe is welded to the other side of the water tank, the outer wall of the water outlet pipe is fixedly connected to a second plugging sleeve, the upper end of the water tank is fixedly connected to a fixed sleeve, the outer wall of the fixed sleeve is in contact with a cover plate, the lower end of the cover plate is bonded with a first perfluoroether rubber sealing ring, hot and cold water pipes are welded to one side of the water tank, and a partition box is welded to one end of the hot and cold water pipes.

[0006] A heat-conducting copper frame is installed on one side of the partition box, a connecting rod is welded on the upper end of the partition box, a positioning sleeve is fixedly connected to the outer wall of the connecting rod, the outer wall of the positioning sleeve is in contact with a fixed cover, a second perfluoroether rubber sealing ring is bonded to the lower end of the fixed cover, and the lower end of the second perfluoroether rubber sealing ring is in contact with a waste heat recovery box.

[0007] The outer wall of the waste heat recovery box is adhered with an aluminum silicate fiber sleeve.

[0008] Preferably, the water inlet pipe is threadedly connected to the first plugging sleeve, and the outer wall of the water inlet pipe is threaded.

[0009] Preferably, the outer wall of the cover plate is tightly fitted with the outer wall of the first perfluoroether rubber sealing ring, and the length of the outer wall of the cover plate is the same as the length of the outer wall of the first perfluoroether rubber sealing ring.

[0010] Preferably, the hot and cold water pipes are arranged vertically to the partition box, and the inner wall of the partition box is of an open-hole design.

[0011] Preferably, the partition box is movably connected to the heat-conducting copper frame, and the partition box is arranged in a semicircular ring structure.

[0012] Preferably, the outer wall of the waste heat recovery box is tightly fitted with the inner wall of the aluminum silicate fiber sleeve, and the inner wall of the aluminum silicate fiber sleeve is of open-hole design.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model connects the partition box by arranging hot and cold water pipes. When the device is used, the internal structure of the partition box is convenient for rapid recovery of waste heat, increases the heat conduction contact surface, and improves the practicality of the device;

[0015] 2. The utility model provides a partition box to activate the heat-conducting copper frame. When the device is used, the partition box and the heat-conducting copper frame are arranged to facilitate the heat conduction of medium-frequency electric furnaces of different sizes, thereby increasing the usability of the device;

[0016] 3. The utility model provides a waste heat recovery box to achieve a close fit with the aluminum silicate fiber sleeve. When the device is in use, the waste heat recovery box and the aluminum silicate fiber sleeve are convenient for reducing waste heat loss, maintaining temperature, and increasing the usability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a vertical appearance diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in vertical and sectional view;

[0019] Figure 3 It is a structural schematic diagram of the utility model of the water tank, water inlet pipe, water outlet pipe, hot and cold water pipes, partition box and waste heat recovery box parts combination;

[0020] Figure 4 This is a schematic diagram of the structure of the heat-conducting copper frame parts of the utility model;

[0021] Figure 5 For this utility model Figure 1 Schematic diagram of the structure with the A part in the middle enlarged.

[0022] In the figure: 1, water tank; 2, water inlet pipe; 3, first plugging sleeve; 4, water outlet pipe; 5, second plugging sleeve; 6, fixing sleeve; 7, cover plate; 8, first perfluoroether rubber sealing ring; 9, hot and cold water pipes; 10, partition box; 11, heat-conducting copper frame; 12, connecting rod; 13, positioning sleeve; 14, fixing cover; 15, second perfluoroether rubber sealing ring; 16, waste heat recovery box; 17, aluminum silicate fiber sleeve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0024] The following describes an embodiment of the utility model based on its overall structure.

[0025] See also Figure 1-5A medium frequency electric furnace waste heat recovery device comprises a water tank 1, a water inlet pipe 2 is welded on one side of the water tank 1, a first plugging sleeve 3 is fixedly connected to the outer wall of the water inlet pipe 2, the water inlet pipe 2 is threadedly connected to the first plugging sleeve 3, and the outer wall of the water inlet pipe 2 is threaded, a water outlet pipe 4 is welded on the other side of the water tank 1, a second plugging sleeve 5 is fixedly connected to the outer wall of the water outlet pipe 4, a fixing sleeve 6 is fixedly connected to the upper end of the water tank 1, the outer wall of the fixing sleeve 6 is in contact with a cover plate 7, a first perfluoroether rubber sealing ring 8 is bonded to the lower end of the cover plate 7, and the outer wall of the cover plate 7 is in contact with the first perfluoroether rubber sealing ring 8. The outer wall of the rubber sealing ring 8 fits tightly, and the outer wall length of the cover plate 7 is the same as the outer wall length of the first perfluoroether rubber sealing ring 8. A hot and cold water pipe 9 is welded to one side of the water tank 1, and a partition box 10 is welded to one end of the hot and cold water pipe 9. The hot and cold water pipe 9 is vertically arranged to the partition box 10, and the inner wall of the partition box 10 is an open-hole design. The hot and cold water pipe 9 is arranged to connect the partition box 10. When the device is in use, the internal structure of the partition box 10 is convenient for rapid recovery of waste heat, increases the heat conduction contact surface, and improves the practicability of the device.

[0026] See also Figure 1-5 A waste heat recovery device for a medium frequency electric furnace, a heat-conducting copper frame 11 is installed on one side of a partition box 10, the partition box 10 is movably connected to the heat-conducting copper frame 11, and the partition box 10 is arranged in a semicircular ring structure, a connecting rod 12 is welded on the upper end of the partition box 10, and a positioning sleeve 13 is fixedly connected to the outer wall of the connecting rod 12, and the outer wall of the positioning sleeve 13 is in contact with a fixed cover 14, and a second perfluoroether rubber sealing ring 15 is bonded to the lower end of the fixed cover 14, and the lower end of the second perfluoroether rubber sealing ring 15 is in contact with a waste heat recovery box 16. By setting the partition box 10, the heat-conducting copper frame 11 is activated. When the device is used, the setting of the partition box 10 and the heat-conducting copper frame 11 is convenient for fitting and conducting heat to medium frequency electric furnaces of different sizes, thereby increasing the usability of the device.

[0027] See also Figure 1-5 A medium frequency electric furnace waste heat recovery device, the outer wall of the waste heat recovery box 16 is bonded with an aluminum silicate fiber sleeve 17, the outer wall of the waste heat recovery box 16 is tightly fitted with the inner wall of the aluminum silicate fiber sleeve 17, and the inner wall of the aluminum silicate fiber sleeve 17 is an open-hole design. The waste heat recovery box 16 is provided to tightly fit the aluminum silicate fiber sleeve 17. When the device is used, the setting of the waste heat recovery box 16 and the aluminum silicate fiber sleeve 17 is convenient for reducing waste heat loss and keeping the temperature warm, thereby increasing the usability of the device.

[0028] Working principle: When in use, take out the device and place it in the designated position, then bond the fixing cover 14 to the second perfluoroether rubber sealing ring 15, then clamp and fix the fixing cover 14 to the connecting rod 12, then thread the connecting rod 12 to the positioning sleeve 13, then bond the cover plate 7 to the first perfluoroether rubber sealing ring 8, then clamp and fix the cover plate 7 to the water tank 1, then thread the fixing sleeve 6 to the water tank 1, fit the aluminum silicate fiber sleeve 17 to the aluminum silicate fiber sleeve 17, place the medium frequency electric furnace inside the waste heat recovery box 16, fit the heat-conducting copper frame 11 to the waste heat recovery box 16, and then screw the water inlet pipe 2 to the first plugging sleeve 3. The threads are disassembled, the water inlet pipe 2 is connected to the external water pipe, and then the second plugging sleeve 5 is threadedly disassembled of the water outlet pipe 4, and the water outlet pipe 4 is connected to another external water pipe. Finally, the water inlet pipe 2 is filled with water, and the water is injected into one side of the cold and hot water pipes 9 after being separated inside the water tank 1, and the water is injected into one side of the separation box 10, and the cold water is circulated to the inside of the waste heat recovery box 16 for heat recovery. Through thermal expansion and contraction, hot water is injected into the separation box 10 and injected into the other side of the cold and hot water pipes 9, and discharged through the other side of the water tank 1 for waste heat recovery. In this way, the use process of the device is completed. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the protection content of the present invention.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A medium frequency electric furnace waste heat recovery device, comprising a water tank (1), characterized in that: A water inlet pipe (2) is welded to one side of the water tank (1), and a first plugging sleeve (3) is fixedly connected to the outer wall of the water inlet pipe (2); a water outlet pipe (4) is welded to the other side of the water tank (1), and a second plugging sleeve (5) is fixedly connected to the outer wall of the water outlet pipe (4); a fixing sleeve (6) is fixedly connected to the upper end of the water tank (1), and the outer wall of the fixing sleeve (6) abuts against a cover plate (7), and a first perfluoroether rubber sealing ring (8) is bonded to the lower end of the cover plate (7); a cold and hot water pipe (9) is welded to one side of the water tank (1), and a partition box (10) is welded to one end of the cold and hot water pipe (9); A heat-conducting copper frame (11) is installed on one side of the partition box (10); a connecting rod (12) is welded to the upper end of the partition box (10); a positioning sleeve (13) is fixedly connected to the outer wall of the connecting rod (12); the outer wall of the positioning sleeve (13) abuts against a fixed cover (14); a second perfluoroether rubber sealing ring (15) is bonded to the lower end of the fixed cover (14); and the lower end of the second perfluoroether rubber sealing ring (15) abuts against a waste heat recovery box (16); The outer wall of the waste heat recovery box (16) is adhered with an aluminum silicate fiber sleeve (17).

2. A medium frequency electric furnace waste heat recovery device according to claim 1, characterized in that: The water inlet pipe (2) is threadedly connected to the first plugging sleeve (3), and the outer wall of the water inlet pipe (2) is arranged in a threaded shape.

3. A medium frequency electric furnace waste heat recovery device according to claim 1, characterized in that: The outer wall of the cover plate (7) is tightly fitted with the outer wall of the first perfluoroether rubber sealing ring (8), and the length of the outer wall of the cover plate (7) is the same as the length of the outer wall of the first perfluoroether rubber sealing ring (8).

4. A medium frequency electric furnace waste heat recovery device according to claim 1, characterized in that: The hot and cold water pipes (9) are arranged vertically to the partition box (10), and the inner wall of the partition box (10) is of an open-hole design.

5. The medium frequency electric furnace waste heat recovery device according to claim 1 is characterized in that: The partition box (10) is movably connected to the heat-conducting copper frame (11), and the partition box (10) is arranged in a semicircular ring structure.

6. The medium frequency electric furnace waste heat recovery device according to claim 1 is characterized in that: The outer wall of the waste heat recovery box (16) is tightly fitted with the inner wall of the aluminum silicate fiber sleeve (17), and the inner wall of the aluminum silicate fiber sleeve (17) is of open-hole design.

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