Casting heat preservation treatment equipment with waste gas heat energy recovery

Abstract

The utility model relates to foundry heat preservation technical field discloses a kind of foundry heat preservation treatment equipment with waste gas heat recovery, including heat preservation furnace, filter assembly and recovery component, two exhaust holes are set up in the upper end face middle part of heat preservation furnace, two the exhaust hole upper end is fixedly provided with waste gas cover, two the waste gas cover upper end face middle part is all through with waste gas pipe, the filter assembly includes filter box and two connecting plates, two The opposite side upper and lower ends of connecting plate are all fixedly provided with threaded rod, two The opposite side middle part of connecting plate is all fixedly provided with filter core, the upper and lower ends of both sides of filter box are all set with mounting hole, the middle part of both ends of filter box is all set with connecting hole, two The inside of mounting hole is all fixedly provided with bidirectional motor. In the utility model, improve heat recovery rate of heat preservation furnace, make heat preservation furnace internal temperature uniform, and it is convenient to filter the particulate matter and harmful substance generated by waste gas and clean up regularly.

Description

Technical Field

[0001] This utility model relates to the field of casting insulation technology, and in particular to a casting insulation treatment device with waste gas heat recovery. Background Technology

[0002] The casting holding furnace is a core piece of equipment used in casting production to maintain the temperature of molten metal and ensure its fluidity. It is often used for heat preservation and temperature regulation of molten metal before pouring. Its core function is to stabilize the molten metal within the temperature range required by the process through heating elements, thereby reducing casting defects caused by temperature fluctuations. It is widely applicable to casting iron, cast steel and non-ferrous metal casting scenarios, and is a key piece of equipment to ensure casting quality and production continuity.

[0003] In terms of heat recovery, existing casting holding furnaces mostly rely on direct heat exchange with flue gas. This involves preheating the incoming air through a separate heat exchanger and then recovering the heat energy of the holding furnace through heat circulation. However, during the air intake process, impurities in the air are prone to accumulating ash and scale on the surface of the heat exchanger, which can corrode the equipment. At the same time, its heat recovery efficiency is low, making it impossible to maintain a stable internal temperature in the holding furnace.

[0004] Therefore, those skilled in the art have provided a casting heat preservation treatment device with waste gas heat recovery to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a casting heat recovery equipment with waste gas heat energy recovery, which improves the heat recovery efficiency of waste gas heat energy, makes the heat recovery furnace more energy-efficient, maintains uniform internal temperature of the heat recovery furnace, reduces defects in castings, and reduces the emission of particulate matter and harmful substances from waste gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A casting heat preservation treatment device with waste gas heat recovery includes a heat preservation furnace, a filter assembly and a recovery assembly. Two exhaust holes are opened in the middle of the upper end face of the heat preservation furnace near the front end. A waste gas hood is fixedly installed at the upper end of each of the two exhaust holes. A waste gas pipe is installed through the middle of the upper end face of each of the two waste gas hoods. The filter assembly includes a filter box and two connecting plates. Threaded rods are fixedly provided at the top and bottom ends of the two connecting plates on opposite sides. Filter elements are fixedly provided in the middle of the two connecting plates on opposite sides. Mounting holes are provided at the top and bottom ends of both sides of the filter box. Connecting holes are provided in the middle of the front and rear ends of the filter box. Bidirectional motors are fixedly provided inside the two mounting holes. Threaded sleeves are fixedly provided at the output ends of the two bidirectional motors. The recovery component includes two fresh air heat exchangers, a waste heat heat exchanger, a circulation pipe and a connecting pipe. The outlet of the circulation pipe is fixedly provided with a first circulation branch pipe, and the lower sides of the circulation pipe are provided with second circulation branch pipes.

[0007] Furthermore, the four threaded rods are respectively threaded into the interior of the four threaded sleeves, and a hand-held plate is fixedly installed in the middle of the opposite side of the two connecting plates.

[0008] Furthermore, the two connection holes are respectively connected to the exhaust pipe and the connecting pipe.

[0009] Furthermore, the two fresh air heat exchangers are fixedly connected to each other on one side and both sides of the connecting pipe, the rear end of the connecting pipe is fixedly connected to the air inlet of the waste heat heat exchanger, and the circulation pipe is fixedly connected to the air outlet of the waste heat heat exchanger.

[0010] Furthermore, a base plate is fixedly installed at the lower end of both of the fresh air heat exchangers, and a support base is fixedly installed on both sides of the lower end of the waste heat heat exchanger.

[0011] Furthermore, a circulating fan is fixedly installed inside the lower part of each of the two exhaust holes, and a control cabinet is fixedly installed on the upper part of one side of the heat preservation furnace near the front end.

[0012] Furthermore, a furnace door is hinged to the center of the front end face of the heat preservation furnace, and a handle is fixedly installed at the center of the front end face of the furnace door.

[0013] This utility model has the following beneficial effects: 1. The present invention proposes a casting insulation treatment equipment with waste gas heat energy recovery. By setting up a filter component, the emission of particulate matter and harmful substances in the waste gas can be reduced. The intercepted particulate matter and harmful substances can be collected and cleaned in a timely manner, avoiding wear and blockage of the waste heat exchanger and fresh air heat exchanger, thereby extending the service life of the waste heat exchanger and fresh air heat exchanger.

[0014] 2. The casting heat recovery equipment proposed in this utility model shortens the heating time inside the heat recovery furnace and maintains the heat recovery temperature by means of the recovery component, improves the temperature uniformity inside the furnace, reduces the thermal stress and defect rate of castings, improves the heat recovery efficiency of waste gas, and makes the heat recovery process of the heat recovery furnace more energy-efficient. Attached Figure Description

[0015] Figure 1 This is a first axonometric view of the present invention; Figure 2 This is a second axonometric view of the present invention; Figure 3 This is a side sectional axial view of the present invention; Figure 4This is an isometric view of the recycling component of this utility model; Figure 5 This is an isometric view of the filter assembly of this utility model; Figure 6 This is a schematic diagram of the connecting plate of this utility model from the axial side. Figure 7 This is a cross-sectional axial view of the filter assembly of this utility model.

[0016] Legend: 1. Insulation furnace; 2. Exhaust hood; 3. Exhaust pipe; 4. Filter assembly; 5. Recovery assembly; 6. Furnace door; 7. Handle; 8. Control cabinet; 9. Circulating fan; 10. Exhaust vent; 401. Filter box; 402. Connecting plate; 403. Handheld plate; 404. Connecting hole; 405. Filter element; 406. Threaded rod; 407. Mounting hole; 408. Threaded sleeve; 409. Bidirectional motor; 501. Connecting pipe; 502. Base plate; 503. Fresh air heat exchanger; 504. Waste heat heat exchanger; 505. Circulation pipe; 506. Support base; 507. First circulation branch pipe; 508. Second circulation branch pipe. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-7 An embodiment of this utility model is provided: a casting heat preservation treatment equipment with waste gas heat energy recovery, including a heat preservation furnace 1, a filter assembly 4 and a recovery assembly 5. Two exhaust holes 10 are opened in the middle of the upper end face of the heat preservation furnace 1 near the front end. A waste gas hood 2 is fixedly installed on the upper end of each of the two exhaust holes 10. A waste gas pipe 3 is installed through the middle of the upper end face of each of the two waste gas hoods 2. A circulating fan 9 is fixedly installed inside the two exhaust vents 10 at the lower part. A control cabinet 8 is fixedly installed on the upper part of one side of the heat preservation furnace 1 near the front end. A furnace door 6 is hinged to the middle of the front face of the heat preservation furnace 1. A handle 7 is fixedly installed in the middle of the front face of the furnace door 6.

[0019] Specifically, the exhaust vent 10 at the top of the heat preservation furnace 1 facilitates the discharge of hot waste gas. The circulating fan 9 inside the exhaust vent 10 accelerates the efficiency of waste gas discharge. The waste gas pipe 3 at the top of the waste gas hood 2 is connected to the filter assembly 4, which facilitates the filtration of particulate matter and harmful substances during the transportation of waste gas. The particulate matter and harmful substances are cleaned regularly. By connecting the filter assembly 4 to the recovery assembly 5, the filtered waste gas is heat-recovered, making the heat preservation furnace 1 more energy-efficient and improving the waste gas heat recovery rate, thus stabilizing the internal temperature of the heat preservation furnace 1. The control cabinet 8 facilitates the control of the bidirectional motor 409, the waste heat exchanger 504, the fresh air heat exchanger 503, and the heat preservation furnace 1. The furnace door 6 is hinged at the front end of the heat preservation furnace 1, and the handle 7 facilitates the opening and closing of the furnace door 6 at the front end of the heat preservation furnace 1 for the loading and unloading of castings.

[0020] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 The filter assembly 4 includes a filter box 401 and two connecting plates 402. Threaded rods 406 are fixedly installed at the top and bottom ends of the two connecting plates 402 on opposite sides. Filter elements 405 are fixedly installed in the middle of the two connecting plates 402 on opposite sides. Mounting holes 407 are opened at the top and bottom ends of both sides of the filter box 401. Connecting holes 404 are opened in the middle of the front and rear ends of the filter box 401. Bidirectional motors 409 are fixedly installed inside the two mounting holes 407. Threaded sleeves 408 are fixedly installed at the output ends of the two bidirectional motors 409. Four threaded rods 406 are threadedly connected to the inside of four threaded sleeves 408 respectively. Hand-held plates 403 are fixedly installed in the middle of opposite sides of the two connecting plates 402. Two connecting holes 404 are respectively connected to the exhaust pipe 3 and the connecting pipe 501.

[0021] Specifically, in the filter assembly 4, the connecting plate 402 is seamlessly connected to both sides of the filter box 401. The mounting hole 407 in the filter box 401 is equipped with a bidirectional motor 409. The output end of the bidirectional motor 409 drives the threaded sleeve 408 to rotate, so that the threaded rod 406 on the connecting plate 402 is threaded into the threaded sleeve 408, making it easy to install and remove the connecting plate 402 on the filter box 401. The filter element 405 in the middle of the opposite side of the connecting plate 402 filters particulate matter and harmful substances in the exhaust gas. The hand-held plate 403 in the middle of the opposite side of the connecting plate 402 makes it easy to hold the connecting plate 402. The connecting holes 404 at both ends of the filter box 401 connect the front connecting hole 404 to the exhaust gas pipe 3 and the rear connecting hole 404 to the connecting pipe 501, so that the filtered exhaust gas is discharged into the recovery assembly 5 during the transportation process, preventing particulate matter and harmful substances in the exhaust gas from damaging the equipment and improving the service life of the recovery assembly 5.

[0022] Reference Figures 1-4 The recovery component 5 includes two fresh air heat exchangers 503, a waste heat heat exchanger 504, a circulation pipe 505 and a connecting pipe 501. The outlet of the circulation pipe 505 is fixedly provided with a first circulation branch pipe 507, and the lower sides of the circulation pipe 505 are provided with second circulation branch pipes 508. Two fresh air heat exchangers 503 are fixedly connected to each other on one side and to both sides of the connecting pipe 501. The rear end of the connecting pipe 501 is fixedly connected to the air inlet of the waste heat heat exchanger 504. The circulation pipe 505 is fixedly connected to the air outlet of the waste heat heat exchanger 504. A base plate 502 is fixedly installed at the lower end of each of the two fresh air heat exchangers 503. Support seats 506 are fixedly installed on both sides of the lower end of the waste heat heat exchanger 504.

[0023] Specifically, the outlet of the circulation pipe 505 is provided with a first circulation branch pipe 507, and a second circulation branch pipe 508 is provided through both sides of its lower part. This structure allows the recovered heat energy to circulate evenly inside the insulation furnace 1, maintaining a stable internal temperature. The fresh air is connected to the connecting pipe 501 through the fresh air heat exchanger 503, so that the low-temperature fresh air and the high-temperature exhaust gas can indirectly contact each other inside the connecting pipe 501 to preheat the fresh air. The rear end of the connecting pipe 501 is fixedly connected to the air inlet of the waste heat heat exchanger 504, and the preheated fresh air is preheated to a certain temperature before being discharged into the insulation furnace 1 for insulation. The fresh air heat exchanger 503 and the waste heat heat exchanger 504 are supported by the base plate 502 and the support seat 506.

[0024] Working principle: When heat preservation treatment of castings, the threaded rods 406 on the connecting plate 402 are first threaded to connect the connecting plate 402 to both sides of the filter box 401. The filter element 405 between the connecting plates 402 filters the particulate matter and harmful substances in the exhaust gas inside the exhaust pipe 3, and facilitates regular cleaning. The heat preservation furnace 1 is opened and closed by the handle 7 of the furnace door 6. The casting is placed inside the heat preservation furnace 1. The heat inside the heat preservation furnace 1 generates exhaust gas. The exhaust gas is filtered through the filter element 405 through the exhaust pipe 3 by the circulating fan 9 inside the exhaust hole 10. The filtered exhaust gas is transmitted through the connecting pipe 501 in the recovery component 5. Through the fresh air heat exchangers 503 on both sides of the connecting pipe 501, the low-temperature fresh air and the high-temperature exhaust gas are indirectly in contact inside the pipe. The heat of the exhaust gas is transferred to the fresh air through the pipe wall, which not only avoids the direct mixing and pollution of exhaust gas and fresh air, but also efficiently recovers the heat energy in the exhaust gas to preheat the fresh air. The fresh air after waste heat is transmitted to the waste heat heat exchanger 504, where the preheated fresh air is preheated a second time. After reaching a certain temperature, it is output through the circulation pipe 505 at the outlet of the waste heat heat exchanger 504. The hot air is evenly transmitted back to the insulation furnace 1 through the first circulation branch pipe 507 and the second circulation branch pipe 508 connected by the circulation pipe 505.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A casting heat preservation treatment device with waste gas heat recovery, comprising a heat preservation furnace (1), a filter assembly (4), and a recovery assembly (5), characterized in that: The heat preservation furnace (1) has two exhaust holes (10) in the middle of the upper end face near the front end. Each of the two exhaust holes (10) is fixedly equipped with a waste gas hood (2), and each of the two waste gas hoods (2) is provided with a waste gas pipe (3) through the middle of the upper end face. The filter assembly (4) includes a filter box (401) and two connecting plates (402). Threaded rods (406) are fixedly provided at the upper and lower ends of the two connecting plates (402) on opposite sides. Filter elements (405) are fixedly provided in the middle of the two connecting plates (402) on opposite sides. Mounting holes (407) are provided at the upper and lower ends of both sides of the filter box (401). Connecting holes (404) are provided in the middle of the front and rear ends of the filter box (401). Bidirectional motors (409) are fixedly provided inside the two mounting holes (407). Threaded sleeves (408) are fixedly provided at the output ends of the two bidirectional motors (409). The recovery component (5) includes two fresh air heat exchangers (503), a waste heat heat exchanger (504), a circulation pipe (505) and a connecting pipe (501). The outlet of the circulation pipe (505) is fixedly provided with a first circulation branch pipe (507), and the circulation pipe (505) is provided with a second circulation branch pipe (508) on both sides of the lower part of the circulation pipe (505).

2. The casting heat preservation equipment with waste gas heat recovery according to claim 1, characterized in that: The four threaded rods (406) are threadedly connected to the inside of the four threaded sleeves (408), and a hand-held plate (403) is fixedly installed in the middle of the opposite side of the two connecting plates (402).

3. The casting heat preservation equipment with waste gas heat recovery according to claim 1, characterized in that: The two connecting holes (404) are respectively connected to the exhaust pipe (3) and the connecting pipe (501).

4. The casting heat preservation equipment with waste gas heat recovery according to claim 1, characterized in that: The two fresh air heat exchangers (503) are fixedly connected to each other on one side and to both sides of the connecting pipe (501). The rear end of the connecting pipe (501) is fixedly connected to the air inlet of the waste heat heat exchanger (504), and the circulation pipe (505) is fixedly connected to the air outlet of the waste heat heat exchanger (504).

5. The casting heat preservation equipment with waste gas heat recovery according to claim 1, characterized in that: Both of the fresh air heat exchangers (503) are fixedly provided with a base plate (502) at their lower ends, and both sides of the waste heat heat exchanger (504) are fixedly provided with a support base (506).

6. The casting heat preservation equipment with waste gas heat recovery according to claim 1, characterized in that: A circulating fan (9) is fixedly installed inside the two exhaust holes (10) at the lower part, and a control cabinet (8) is fixedly installed on the upper part of one side of the heat preservation furnace (1) at the front end.

7. A casting heat preservation treatment device with waste gas heat recovery according to claim 1, characterized in that: The furnace door (6) is hinged to the middle of the front end face of the heat preservation furnace (1), and a handle (7) is fixedly installed in the middle of the front end face of the furnace door (6).

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