Waste gas heat recycling device of casting smelting furnace

Abstract

The utility model relates to the technical field of waste gas utilization, in particular to a waste gas heat recycling device of a casting smelting furnace. Comprising a heat conduction box body, a water inlet pipe, a water outlet pipe, a filtering box body, heat exchange pipes, a filtering net, a dust removal cloth bag, a supporting frame, a sliding block, a guide rod and an air inlet pipe, the water inlet pipe is arranged at the left end of the heat conduction box body, the water outlet pipe is arranged at the top end of the heat conduction box body, and the heat exchange pipes are arranged in the heat conduction box body at intervals; an air inlet pipe is arranged at the right end of the filtering box body, a plurality of filtering nets are arranged on the left side in the filtering box body at intervals, a guide rod is arranged on the inner front wall of the filtering box body, a sliding block is connected to the guide rod in a sliding mode, a supporting frame is connected to the sliding block, and a large number of dust removing cloth bags are arranged on the supporting frame at intervals. The filtering box body is designed at the right end of the heat conduction box body, and high-temperature waste gas is doubly filtered by the dust removal cloth bag and the filtering net in the filtering box body, so that the device still has higher heat exchange efficiency after being used for a long time.

Description

Technical Field

[0001] This utility model relates to the field of waste gas utilization technology, and in particular to a waste gas heat recovery and reuse device for casting and smelting furnaces. Background Technology

[0002] Industrial production processes, especially the operation of casting and smelting furnaces, generate large amounts of high-temperature waste gas. This waste gas not only contains a large amount of heat but also various harmful particulate matter and pollutants.

[0003] In some existing waste gas heat recovery and reuse devices for casting and smelting furnaces, after long-term use, a large amount of deposits accumulate on the inner wall of the heat exchange tubes. These deposits reduce the heat exchange efficiency of the heat exchange tubes, resulting in a significant decrease in the heat recovery effect of the device. Utility Model Content

[0004] In order to overcome the shortcomings of some existing waste gas heat recovery and reuse devices in the above-mentioned background technology, the heat recovery effect will significantly decrease after long-term use, the purpose of this utility model is to provide a waste gas heat recovery and reuse device for casting and smelting furnaces.

[0005] The technical solution of this utility model is as follows: a waste gas heat recovery and reuse device for a casting and smelting furnace, comprising a heat-conducting box, an inlet pipe, an outlet pipe, a filter box, heat exchange tubes, filter screens, dust collector bags, a support frame, a slider, a guide rod, and an air inlet pipe. The left end of the heat-conducting box is provided with an inlet pipe, the top end of the heat-conducting box is provided with an outlet pipe, the interior of the heat-conducting box is provided with heat exchange tubes at intervals, the right end of the heat-conducting box is provided with a filter box, the right end of the filter box is provided with an air inlet pipe, the left side of the interior of the filter box is provided with multiple filter screens at intervals, the inner front wall of the filter box is provided with a guide rod, a slider is slidably connected to the guide rod, a support frame is connected to the slider, and a large number of dust collector bags are provided at intervals on the support frame.

[0006] In one embodiment, a lifting mechanism is also included, which includes a rotating handle, a lead screw, and a nut seat. The lead screw is rotatably connected to the inner rear end of the filter box, the top end of the lead screw is connected to the rotating handle, and the lead screw is threadedly connected to the nut seat, which is connected to the support frame.

[0007] In one embodiment, the filter box is further provided with a collection hopper, a collection pipe and a threaded cap. The collection hopper is connected to the bottom right side of the filter box, the collection pipe is connected to the bottom middle of the collection hopper and the threaded cap is threaded onto the collection pipe.

[0008] In one embodiment, the filter housing also includes rotating doors and handles. The top of the filter housing is symmetrically hinged with rotating doors, and each rotating door has a handle at its top.

[0009] In one embodiment, a partition and a baffle are also included, with the partition located in the middle of the interior of the filter housing and the baffle connected to the right side of the interior of the filter housing.

[0010] In one embodiment, a slide is also included, with the slide spaced apart on the left side of the interior of the filter housing, and the slide is slidably connected to the filter screen.

[0011] The beneficial effects are as follows: 1. A filter box is designed at the right end of the heat conduction box. The high-temperature exhaust gas is filtered by the dust removal bag and filter screen in the filter box, so that the filtered high-temperature exhaust gas no longer carries a large number of particles and dust, and a large amount of deposits will no longer accumulate on the tube wall of the heat exchange tube. This allows the device to still have a high heat exchange efficiency after long-term use.

[0012] 2. The design includes a rotating handle, a lead screw, and a nut seat. By rotating the rotating handle, the nut seat can drive the support frame to rise, making it easy for people to clean and replace the dust collector bag. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the heat exchange tube and other components of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the filter screen and other components of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the rotating handle and other components of this utility model.

[0017] The components in the diagram are labeled as follows: 1_Heat conduction box, 2_Water inlet pipe, 3_Water outlet pipe, 4_Filter box, 401_Rotating door, 402_Handle, 403_Baffle, 405_Baffle plate, 5_Heat exchange tube, 6_Filter screen, 601_Slide rail, 7_Dust collector bag, 701_Support frame, 702_Slider, 8_Lifting mechanism, 801_Rotating handle, 802_Screw, 803_Nut seat, 9_Collection hopper, 901_Collection pipe, 10_Threaded cover, 11_Guide rod, 12_Air inlet pipe. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] A waste gas heat recovery and reuse device for a casting and smelting furnace, such as Figures 1-3As shown, the system includes a heat-conducting box 1, an inlet pipe 2, an outlet pipe 3, a filter box 4, heat exchange pipes 5, a filter screen 6, a dust collector bag 7, a support frame 701, a slider 702, a guide rod 11, and an air inlet pipe 12. The heat-conducting box 1 has an inlet pipe 2 at its left end and an outlet pipe 3 at its top. Heat exchange pipes 5 are spaced apart inside the heat-conducting box 1, serving as heat exchange components to transfer heat between the high-temperature exhaust gas and the cooling water. The heat-conducting box 1 has a filter box 4 at its right end, and an air inlet pipe 12 is located at the right end of the filter box 4. The high-temperature exhaust gas passes through the air inlet pipe 12. Pipe 12 enters the filter box 4. Multiple filter screens 6 are spaced apart on the left side of the filter box 4. The filter screens 6 can filter high-temperature exhaust gas. A guide rod 11 is provided on the inner front wall of the filter box 4. A slider 702 is slidably connected to the guide rod 11. A support frame 701 is connected to the slider 702. The support frame 701 is composed of two rectangular plates. The slider 702 is connected to the rectangular plate on the lower side of the support frame 701. A large number of dust collection bags 7 are spaced apart on the support frame 701. The dust collection bags 7 are used to filter particulate matter and dust carried by the high-temperature exhaust gas.

[0020] like Figures 2-4 As shown, it also includes a lifting mechanism 8, which includes a rotating handle 801, a lead screw 802, and a nut seat 803. The lead screw 802 is rotatably connected to the inner rear end of the filter box 4. The top end of the lead screw 802 is connected to the rotating handle 801. The nut seat 803 is threaded onto the lead screw 802. The nut seat 803 is connected to the support frame 701 and to the rectangular plate on the lower side of the support frame 701. If it is necessary to clean and replace the dust collector bag 7, the handle 402 on the right side of the top of the filter box 4 can be held, and the right side of the filter box 4 can be opened by rotating the rotating door 401. By rotating the rotating handle 801, the lead screw 802 can be rotated, which in turn causes the nut seat 803 to move the support frame 701 upward. The dust collector bag 7 moves upward with the support frame 701 and is lifted out of the filter box 4. At this time, the dust collector bag 7 can be cleaned and replaced. The dust collector bag 7 in the lifted state is convenient for cleaning or replacement.

[0021] like Figure 2 and Figure 3 As shown, it also includes a collection hopper 9, a collection pipe 901, and a threaded cap 10. The collection hopper 9 is connected to the bottom right side of the filter box 4, and the collection pipe 901 is connected to the bottom middle of the collection hopper 9. The threaded cap 10 is threaded onto the collection pipe 901. Some of the larger particles and dust captured by the dust collector bag 7 fall into the collection hopper 9 under the action of gravity. These particles and dust will slide down the collection hopper 9 into the collection pipe 901 and accumulate there. If it is necessary to clean the particles and dust in the collection hopper 9, the threaded cap 10 can be unscrewed, and the particles and dust accumulated in the collection hopper 9 will fall directly down.

[0022] like Figures 1-3 As shown, it also includes a rotating door 401, a handle 402, a partition 403, a baffle plate 405, and a slide 601. The top of the filter box 4 is symmetrically hinged with rotating doors 401, and each rotating door 401 is equipped with a handle 402. The design of the rotating door 401 facilitates maintenance and repair of the inside of the filter box 4. Holding the handle 402 can quickly open the rotating door 401. The interior of the filter box 4 is equipped with a partition 403 in the middle, which divides the interior of the filter box 4 into two parts, which is beneficial to the filtration of high-temperature exhaust gas. The right side of the interior of the filter box 4 is connected to a baffle plate 405, which optimizes the flow path of high-temperature exhaust gas and ensures that the exhaust gas fully contacts the dust collector bag 7. The left side of the interior of the filter box 4 is equipped with slides 601 at intervals. The slides 601 are slidably connected to the filter screen 6. Each set of slides 601 consists of two rectangular slide rods, and the filter screen 6 is located between the two rectangular slide rods.

[0023] Initially, a certain amount of clean water is injected into the heat exchange chamber 1 through the water inlet pipe 2. The high-temperature exhaust gas first enters the filter chamber 4 through the air inlet pipe 12. The baffle plate 405 guides the high-temperature exhaust gas to the lower side of the filter chamber 4. The high-temperature exhaust gas enters the dust collector bag 7 from the lower side. The dust collector bag 7 performs preliminary dust removal on the high-temperature exhaust gas, which removes larger particles and dust. The high-temperature exhaust gas exits from the top of the dust collector bag 7 and then enters the left side of the filter chamber 4. Here, the high-temperature exhaust gas passes through multiple filter screens 6 for further filtration, further removing fine particles and ensuring the cleanliness of the exhaust gas. The filtered clean high-temperature exhaust gas then passes through the filter. The clean high-temperature exhaust gas enters the heat exchange tube 5 through the opening on the right side of the heat exchange tube 5 and moves to the left along the heat exchange tube 5. When the clean high-temperature exhaust gas moves into the heat conduction box 1 inside the heat exchange tube 5, it exchanges heat with the clean water outside the heat exchange tube 5. The heat in the high-temperature exhaust gas is transferred to the clean water, realizing the recovery and utilization of heat energy. Finally, the high-temperature exhaust gas leaves from the left side of the heat exchange tube 5, and the clean water that has absorbed the heat can flow out from the water outlet pipe 3. If people need to replace the filter screen 6, they can hold the handle 402 on the top left side of the filter box 4 and open the filter box 4 by rotating the rotating door 401. At this time, people can pull the filter screen 6 out of the filter box 4 for cleaning or replacement.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A waste gas heat recovery and reuse device for a casting and smelting furnace, comprising a heat-conducting box (1), characterized in that: It also includes an inlet pipe (2), an outlet pipe (3), a filter box (4), a heat exchange pipe (5), a filter screen (6), a dust collector bag (7), a support frame (701), a slider (702), a guide rod (11), and an air inlet pipe (12). The left end of the heat conduction box (1) is provided with an inlet pipe (2), the top end of the heat conduction box (1) is provided with an outlet pipe (3), the interior of the heat conduction box (1) is provided with heat exchange pipes (5) at intervals, the right end of the heat conduction box (1) is provided with a filter box (4), the right end of the filter box (4) is provided with an air inlet pipe (12), the left side of the interior of the filter box (4) is provided with multiple filter screens (6) at intervals, the inner front wall of the filter box (4) is provided with a guide rod (11), the guide rod (11) is slidably connected with a slider (702), the slider (702) is connected with a support frame (701), and the support frame (701) is provided with a large number of dust collector bags (7) at intervals.

2. The waste gas heat recovery and reuse device for a casting and smelting furnace as described in claim 1, characterized in that: It also includes a lifting mechanism (8), which includes a rotating handle (801), a lead screw (802) and a nut seat (803). The inner rear end of the filter box (4) is rotatably connected to the lead screw (802), the top end of the lead screw (802) is connected to the rotating handle (801), and the lead screw (802) is threadedly connected to the nut seat (803). The nut seat (803) is connected to the support frame (701).

3. The waste gas heat recovery and reuse device for a casting and smelting furnace as described in claim 2, characterized in that: It also includes a collection hopper (9), a collection pipe (901) and a threaded cap (10). The bottom right side of the filter box (4) is connected to the collection hopper (9), the middle of the bottom of the collection hopper (9) is connected to the collection pipe (901), and the threaded cap (10) is threaded onto the collection pipe (901).

4. The waste gas heat recovery and reuse device for a casting and smelting furnace as described in claim 3, characterized in that: It also includes a rotating door (401) and a handle (402). The top of the filter box (4) is symmetrically hinged with rotating doors (401), and each rotating door (401) has a handle (402) at its top.

5. The waste gas heat recovery and reuse device for a casting and smelting furnace as described in claim 4, characterized in that: It also includes a partition (403) and a baffle (405). The partition (403) is located in the middle of the interior of the filter box (4), and the baffle (405) is connected to the right side of the interior of the filter box (4).

6. The waste gas heat recovery and reuse device for a casting and smelting furnace as described in claim 5, characterized in that: It also includes a slide (601), and the slide (601) is provided at intervals on the left side of the inside of the filter box (4). The slide (601) is slidably connected to the filter screen (6).

Images