Metal smelting equipment with smoke and waste gas heat recovery structure

Abstract

The utility model provides metal smelting equipment with a smoke dust waste gas heat recovery structure, which comprises a fuel gas conduit and a recovery pipe, the inside of the fuel gas conduit is communicated with the inside of a smelting tank, and a group of thermometers for measuring smelting temperature are arranged at the front end of the left side of the smelting tank. A set of bottom frames used for supporting the lower end of the smelting tank are arranged at the lower end of the smelting tank, the bottom frames are fixedly connected with the smelting tank through bolts, and a set of smoke dust openings used for guiding out smoke dust waste gas are formed in the upper end of the right side of the smelting tank. Compared with the prior art, the utility model has the following beneficial effects: the filter box is used for filtering smoke dust waste gas, the water inlet pipe is used for introducing external backwashing water, the heat insulation cotton layer is used for reducing the loss of smoke heat, the filter screen is used for filtering dust in smoke, and the backwashing nozzle is used for backwashing the filter screen; excessive accumulation of dust in the flue gas is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal smelting heat recovery and relates to metal smelting equipment with a smoke and exhaust gas heat recovery structure. Background Art

[0002] Metal smelting waste gas refers to the exhaust gas generated during the metal smelting process, when metal is extracted from ore through high temperatures or other methods. This waste gas contains a large number of harmful substances. Harmful gases such as sulfur dioxide in the waste gas not only contribute to the formation of acid rain and damage soil, water bodies, and vegetation, but can also trigger environmental problems such as the greenhouse effect. The high-temperature smoke and dust waste gas generated during the metal smelting process, if not effectively filtered and heat-recovered, will cause a series of serious problems. This waste gas is rich in harmful substances such as particulate matter, sulfur dioxide, nitrogen oxides, and heavy metals. Existing waste gas heat recovery technology cannot effectively filter particulate matter from the waste gas. These pollutants are directly discharged into the atmosphere, seriously polluting the air environment and affecting human health. Furthermore, after a long period of filtration, the waste gas requires workers to disassemble and clean it or replace the internal filter element, which increases the various costs incurred by manual disassembly and reduces the efficiency of smoke and dust waste gas recovery. Therefore, there is an urgent need for metal smelting equipment with a smoke and dust waste gas heat recovery structure to solve the above problems. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a metal smelting equipment with a smoke and exhaust gas heat recovery structure to solve the problems raised in the above background technology.

[0004] The utility model is realized by the following technical solutions: a metal smelting device with a smoke and exhaust gas heat recovery structure, comprising: a gas conduit and a recovery pipe, wherein the interior of the gas conduit is interconnected with the interior of a smelting tank;

[0005] A thermometer for measuring the smelting temperature is provided at the front end of the left side of the smelting tank. A base frame for supporting the lower end of the smelting tank is provided at the lower end of the smelting tank. The base frame is fixed to the smelting tank by bolts. A dust outlet is provided at the upper end of the right side of the smelting tank for discharging smoke and exhaust gas.

[0006] A group of exhaust pipes for conducting exhaust gas is provided on the right side of the smoke outlet. The cross section of the exhaust pipe is an S-shaped structure when viewed from the front. A group of outlet seats for conducting exhaust gas are provided on the upper right end of the exhaust pipe. A group of filter boxes for filtering exhaust gas are provided on the upper end of the outlet seat. The exhaust gas can be filtered by using the filter boxes.

[0007] As a preferred embodiment, the interior of the filter box is connected to the interior of the air outlet seat and the interior of the right end of the exhaust pipe. A group of water inlet pipes for introducing external backwash water is provided at the upper end of the rear end of the filter box, and a group of drain pipes for discharging backwash water is provided on the right side of the air outlet seat. External backwash water can be introduced by using the water inlet pipe.

[0008] As a preferred embodiment, a group of recovery pipes for recovering the filtered high-temperature exhaust gas are provided at the upper end of the filter box. The recovery pipes, the filter box and the air outlet seat are all provided with a thermal insulation cotton layer, which can reduce the heat loss of the flue gas by using the thermal insulation cotton layer.

[0009] As a preferred embodiment, a group of gas connection pipes for sealingly connecting to an external gas connection pipe is provided on the left side of the gas conduit, a group of air pumps for drawing in gas is provided on the right side of the gas conduit, and a group of connection seats for introducing gas into the interior of the smelting tank is provided on the rear side of the air pump.

[0010] As a preferred embodiment, the connecting seat and the smelting tank are fixed by bolts, and the interior of the connecting seat and the interior of the smelting tank are communicated with each other, and the gas transported in the gas conduit provides fuel for the smelting tank.

[0011] As a preferred embodiment, the interior of the filter box includes a temperature-resistant shell and a water pipe. The interior of the filter box is provided with a group of temperature-resistant shells for preventing temperature loss. The interior of the filter box is provided with a group of filter cavities for filtering smoke and exhaust gas. The interior of the filter cavity is provided with several groups of filter screens for filtering dust in the smoke. The upper end of the filter cavity is provided with a group of top frames for connecting to several groups of nozzles, which can filter the dust in the smoke by using the filter screens.

[0012] As a preferred embodiment, the lower end of the top frame is provided with several groups of backwash nozzles for backwashing the filter, and several groups of water pipes for interconnecting with the water inlet pipes are provided between the several groups of backwash nozzles. The water spraying direction of the backwash nozzles is opposite to the exhaust gas discharge direction. By using the backwash nozzles, the filter can be backwashed to prevent excessive accumulation of dust inside the flue gas.

[0013] After adopting the above technical scheme, the beneficial effects of the utility model are: by using a filter box to filter the smoke and exhaust gas, by using a water inlet pipe to introduce external backwash water, by using a thermal insulation cotton layer to reduce the heat loss of the flue gas, by using a filter screen to filter the dust in the flue gas, and by using a backwash nozzle to backwash the filter screen to prevent excessive accumulation of dust inside the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 This is a schematic diagram of a top view from the right front oblique side of a metal smelting device with a smoke and exhaust gas heat recovery structure according to the present invention;

[0016] Figure 2 This is a schematic diagram of the front view of the interior of a filter box in a metal smelting device with a smoke and exhaust gas heat recovery structure according to the present invention;

[0017] Figure 3 This is a schematic diagram of the front side top view of the filter screen in a metal smelting equipment with a smoke and exhaust gas heat recovery structure according to the present invention;

[0018] Figure 4 This is a schematic diagram of the top frame and several groups of backwash nozzles in a metal smelting equipment with a smoke and exhaust gas heat recovery structure according to the present invention;

[0019] In the figure: 100 - gas conduit, 110 - air pump, 120 - connection base, 130 - smelting pot, 140 - thermometer, 150 - base frame, 160 - exhaust pipe, 170 - outlet base, 180 - filter box, 190 - water inlet pipe, 200 - drain pipe, 210 - recovery pipe;

[0020] 18a-temperature-resistance shell, 18b-top frame, 18c-backwash nozzle, 18d-filter screen, 18e-filter chamber, 18f-water pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-4 A metal smelting device with a smoke and exhaust gas heat recovery structure includes: a gas conduit 100, a smelting tank 130, a filter box 180, and a recovery pipe 210. The interior of the gas conduit 100 is connected to the interior of the smelting tank 130.

[0023] A thermometer 140 for measuring the smelting temperature is provided at the front left side of the smelting tank 130. A base frame 150 for supporting the lower end of the smelting tank 130 is provided. The base frame 150 is fixed to the smelting tank 130 by bolts. A dust outlet is provided at the upper right side of the smelting tank 130 for discharging smoke and exhaust gas.

[0024] A group of exhaust pipes 160 for conducting the exhaust gas is provided on the right side of the smoke outlet. The cross-section of the exhaust pipe 160 is an S-shaped structure when viewed from the front. A group of outlet seats 170 for conducting the exhaust gas are provided at the upper right end of the exhaust pipe 160. A group of filter boxes 180 for filtering the exhaust gas are provided at the upper end of the outlet seat 170. The exhaust gas can be filtered by using the filter box 180.

[0025] The interior of the filter box 180 is connected to the interior of the air outlet seat 170 and the interior of the right end of the exhaust pipe 160. A group of water inlet pipes 190 for introducing external backwash water is provided at the upper end of the rear end of the filter box 180. A group of drain pipes 200 for discharging backwash water is provided on the right side of the air outlet seat 170. External backwash water can be introduced by using the water inlet pipes 190.

[0026] A set of recovery pipes 210 for recovering the filtered high-temperature exhaust gas is provided at the upper end of the filter box 180. The recovery pipes 210, the filter box 180 and the air outlet seat 170 are all provided with thermal insulation cotton layers, which can reduce the heat loss of the flue gas by using the thermal insulation cotton layers.

[0027] A group of gas connection pipes for sealingly connecting to the external gas is provided on the left side of the gas conduit 100. An air pump 110 for drawing in gas is provided on the right side of the gas conduit 100. A group of connection sockets 120 for introducing gas into the interior of the smelting tank 130 is provided on the rear side of the air pump 110.

[0028] The connection base 120 and the smelting pot 130 are fixed by bolts, and the interior of the connection base 120 and the interior of the smelting pot 130 are communicated with each other. The gas transported by the gas conduit 100 provides fuel for the smelting pot 130 .

[0029] The interior of the filter box 180 includes a heat-resistant shell 18a and a water pipe 18f. The interior of the filter box 180 is provided with a group of heat-resistant shells 18a for preventing temperature loss. The interior of the filter box 180 is provided with a group of filter chambers 18e for filtering smoke and exhaust gas. The interior of the filter chamber 18e is provided with several groups of filter screens 18d for filtering dust in the smoke. The upper end of the filter chamber 18e is provided with a group of top frames 18b for connecting to several groups of nozzles, which can filter dust in the smoke by using the filter screens 18d.

[0030] Several groups of backwash nozzles 18c for backwashing the filter 18d are provided at the lower end of the top frame 18b. Several groups of water pipes 18f for interconnecting with the water inlet pipe 190 are provided between the several groups of backwash nozzles 18c. The water spraying direction of the backwash nozzle 18c is opposite to the exhaust gas discharge direction. By using the backwash nozzle 18c, the filter 18d can be backwashed to prevent excessive accumulation of dust inside the flue gas.

[0031] See also Figures 1-4 As a first embodiment of the present invention: First, when workers use external fuel gas to melt metal inside the smelting pot 130, the smoke and dust exhaust gas generated during the smelting enters the interior of the gas outlet seat 170 through the exhaust pipe 160 and drifts from the bottom of the filter cavity 18e from bottom to top. During the upward drift of the high-temperature flue gas inside the filter box 180, the multiple groups of filter screens 18d can retain the particulate matter inside the high-temperature flue gas and then discharge it through the recovery pipe 210. At the same time, because a group of temperature-resistant shells 18a are provided inside the filter box 180 to prevent temperature loss, and the recovery pipe 210, the filter box 180 and the gas outlet seat 170 are all provided with thermal insulation cotton layers, the thermal insulation cotton layers can reduce the heat loss of the flue gas while filtering the smoke and dust exhaust gas.

[0032] See also Figures 1-4 , as the second embodiment of the present invention: based on the explanation in the above embodiment, further, when the smoke and exhaust gas are filtered for a long time and a large amount of particulate matter adheres to the lower ends of several groups of filter screens 18d, the staff will seal the external water pipe with the water inlet pipe 190, and spray the water from top to bottom inside the filter cavity 18e through several groups of backwash nozzles 18c, and backwash the filter screen 18d, and make the particulate matter flow out through the drain pipe 200 along with the backwash water, without the need for the staff to disassemble the equipment, and save the use cost. After the filter screen 18d is cleaned, it can more efficiently improve the smoke and exhaust gas recovery effect.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A metal smelting equipment with a smoke and exhaust gas heat recovery structure, comprising: A gas conduit (100), a smelting tank (130), a filter box (180) and a recovery pipe (210), wherein the interior of the gas conduit (100) and the interior of the smelting tank (130) are in communication with each other; A group of thermometers (140) for measuring the smelting temperature is provided at the front end of the left side of the smelting tank (130); a group of base frames (150) for supporting the lower end of the smelting tank (130) are provided at the lower end of the smelting tank (130); the base frames (150) and the smelting tank (130) are fixed by bolts; a group of dust ports for guiding smoke and exhaust gas are provided at the upper end of the right side of the smelting tank (130); A set of exhaust pipes (160) for conducting exhaust gas is provided on the right side of the smoke outlet. The exhaust pipe (160) has an S-shaped cross-section when viewed from the front. A set of outlet seats (170) for conducting exhaust gas are provided at the upper end of the right side of the exhaust pipe (160). A set of filter boxes (180) for filtering exhaust gas are provided at the upper end of the outlet seat (170).

2. The metal smelting equipment with a smoke and exhaust gas heat recovery structure according to claim 1 is characterized in that: The interior of the filter box (180) is connected to the interior of the air outlet seat (170) and the interior of the right end of the exhaust pipe (160). A group of water inlet pipes (190) for introducing external backwash water is provided at the upper end of the rear end of the filter box (180). A group of drain pipes (200) for discharging backwash water is provided on the right side of the air outlet seat (170).

3. The metal smelting equipment with a smoke and exhaust gas heat recovery structure according to claim 2, characterized in that: A set of recovery pipes (210) for recovering filtered high-temperature exhaust gas is provided at the upper end of the filter box (180), and thermal insulation cotton layers are provided inside the recovery pipes (210), the filter box (180), and the gas outlet seat (170).

4. The metal smelting equipment with a smoke and exhaust gas heat recovery structure according to claim 1 is characterized in that: The left side of the gas conduit (100) is provided with a group for sealingly connecting with an external gas connection pipe, the right side of the gas conduit (100) is provided with a group of air pumps (110) for drawing in gas, and the rear side of the air pump (110) is provided with a group of connection seats (120) for introducing gas into the interior of the smelting tank (130).

5. The metal smelting equipment with a smoke and exhaust gas heat recovery structure according to claim 4 is characterized in that: The connecting seat (120) and the smelting tank (130) are fixed by bolt connection, and the interior of the connecting seat (120) and the interior of the smelting tank (130) are communicated with each other. The gas transported inside the gas conduit (100) provides fuel for the smelting tank (130).

6. The metal smelting equipment with a smoke and exhaust gas heat recovery structure according to claim 3, characterized in that: The filter box (180) includes a heat-resistance shell (18a) and a water conduit (18f) inside. The filter box (180) is provided with a group of heat-resistance shells (18a) for preventing temperature loss. The filter box (180) is provided with a group of filter cavities (18e) for filtering smoke and exhaust gas. A plurality of filter screens (18d) for filtering dust in smoke are provided inside the filter cavity (18e), and a top frame (18b) for connecting with a plurality of nozzles is provided at the upper end of the filter cavity (18e).

7. The metal smelting equipment with a smoke and exhaust gas heat recovery structure according to claim 6, characterized in that: The lower end of the top frame (18b) is provided with a plurality of groups of backwash nozzles (18c) for backwashing the filter (18d), and a plurality of groups of water guide pipes (18f) for communicating with the water inlet pipe (190) are provided between the plurality of groups of backwash nozzles (18c). The water spraying direction of the backwash nozzles (18c) is opposite to the exhaust gas outlet direction.

Images