Waste gas waste heat efficient utilization device in magnesium metal purification process

Abstract

The invention discloses a waste gas waste heat efficient utilization device in the magnesium metal purification process, and relates to the technical field of metal purification, the waste gas waste heat efficient utilization device comprises a rack, a conveying mechanism, a transmission mechanism and a gas collection mechanism, the conveying mechanism and the transmission mechanism are both arranged on the rack, and the conveying mechanism is used for conveying crude magnesium to a smelting furnace; the transmission mechanism is used for driving the conveying mechanism to move; the gas collecting mechanism is arranged on the outer side of the rack, the conveying mechanism conveys crude magnesium in the gas collecting mechanism, and the gas collecting mechanism is used for collecting high-temperature waste gas generated by crude magnesium smelting so as to preheat the crude magnesium carried by the conveying mechanism. High-temperature waste gas generated in the crude magnesium smelting process is collected, waste heat of the waste gas is used for preheating materials to be treated in the chain buckets, and the waste gas is effectively utilized.

Description

Technical Field

[0001] The present application relates to the technical field of metal purification and purification, and in particular to a device for efficiently utilizing waste heat from exhaust gas during the purification and purification of magnesium metal. Background Art

[0002] Purification / refining of magnesium is an essential process for the production of raw magnesium ingots, the regeneration of waste magnesium and the purification of magnesium liquid. This process often uses cheap fuels such as coke oven gas / lignite tail gas as a heat source, heats magnesium to a liquid state and then adds flux for purification. The high-temperature tail gas generated after combustion is directly discharged into the atmosphere. The high-temperature tail gas content is large, resulting in a waste of energy.

[0003] After research, it was found that the existing chain conveyors only focus on the stable material transportation function, and rarely consider how to utilize the waste heat resources in the production process. For example, when conveying magnesium blocks, traditional chain conveyors are not equipped with corresponding waste gas collection and utilization devices, and are unable to recover and utilize the waste gas heat generated after heating the magnesium blocks. Although some companies have tried to use simple heat exchange equipment to recover part of the heat, these devices often have complex structures, low heat exchange efficiency, and incompatibility with chain conveyors. These problems make it difficult to meet the actual production needs for preheating magnesium blocks, and will increase additional equipment costs and maintenance difficulties.

[0004] In addition, the independent waste gas heat utilization devices designed by some researchers cannot be directly mounted on the chain conveyor to work together, which is not conducive to the integration and automation of the entire magnesium smelting production line, and also limits the potential of enterprises to improve production efficiency and reduce energy consumption. Summary of the invention

[0005] The main purpose of this application is to provide a device for efficiently utilizing waste heat from exhaust gas during the purification of metallic magnesium, aiming to solve the above-mentioned technical problems.

[0006] The technical solutions adopted in this application are as follows:

[0007] A device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal, comprising:

[0008] frame;

[0009] A conveying mechanism, the conveying mechanism is arranged on the frame, and the conveying mechanism is used to convey the crude magnesium to the smelting furnace;

[0010] A transmission mechanism, the transmission mechanism is arranged on the frame and is used to drive the conveying mechanism to move;

[0011] The gas collecting mechanism is arranged outside the frame, and the conveying mechanism conveys the crude magnesium inside the gas collecting mechanism. The gas collecting mechanism is used to collect high-temperature exhaust gas generated by magnesium block smelting to preheat the crude magnesium carried by the conveying mechanism.

[0012] Optionally, the conveying mechanism includes:

[0013] A conveyor vehicle row, wherein the conveyor vehicle row is composed of a plurality of conveyor vehicles connected in sequence by a chain, and the chain is in driving connection with the transmission mechanism;

[0014] An annular track is installed on the frame, and the conveying vehicle row reciprocates along the annular track.

[0015] Optionally, the transport trolley includes:

[0016] Chain bucket;

[0017] A chain bucket connecting plate, the chain bucket is fixedly connected to the chain bucket connecting plate, and the chain bucket connecting plates are connected by linking side plates to form the chain;

[0018] A wheel is rotatably mounted on the outer side of the chain bucket connecting plate, and the wheel moves along the annular track.

[0019] Optionally, the annular track includes a straight track and a curved track, the straight track is arranged in two parallel sections, and the curved track is integrally formed at both ends of the straight track.

[0020] Optionally, the transmission mechanism includes a sprocket, a transmission shaft, a bearing seat, a reducer and a motor, the bearing seat is installed on the frame, the sprocket is installed on the bearing seat through the transmission shaft, the reducer and the motor are arranged on one side of the frame, and the reducer is connected to the sprocket through the transmission shaft.

[0021] Optionally, the transmission mechanism further includes a tensioning mechanism, and the tensioning mechanism includes:

[0022] A tensioning spring, wherein the tensioning spring is fixed on the frame;

[0023] A shaft sleeve, the shaft sleeve is fixedly sleeved on the transmission shaft, and the tension spring is fixedly connected to the shaft sleeve;

[0024] A slider is connected to the transmission shaft through the bearing seat, and the slider is slidably arranged on the frame.

[0025] Optionally, the air collecting mechanism includes an air intake end cover, an exhaust end cover and a cylindrical shell, the cylindrical shell is arranged on the outside of the frame, the air intake end cover and the exhaust end cover are arranged at both ends of the cylindrical shell, and the air intake end cover is provided with an air inlet, and the exhaust end cover is provided with an air outlet.

[0026] Optionally, a circumferential cavity is provided inside the cylindrical shell, and heat sinks are arranged in a circumferential array inside the circumferential cavity.

[0027] Compared with the prior art, the beneficial effects of this application are:

[0028] The present application proposes a device for efficiently utilizing waste heat from waste gas in the process of purifying and purifying metallic magnesium. By arranging a gas collecting mechanism on the outside of an existing chain bucket conveyor, the high-temperature gas generated in the production process of magnesium blocks is passed into the gas collecting mechanism, thereby collecting the high-temperature waste gas generated in the crude magnesium smelting process. The waste heat of the waste gas is used to preheat the crude magnesium transported and transferred by the chain bucket conveyor, thereby effectively utilizing the waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an exhaust gas waste heat utilization device based on a chain bucket conveyor of the present invention;

[0030] Figure 2 for Figure 1 Sectional view in the AA direction;

[0031] Figure 3 It is a structural schematic diagram of a gas collecting mechanism in an exhaust gas waste heat utilization device based on a chain bucket conveyor of the present invention;

[0032] Figure 4 It is a schematic diagram of a transmission mechanism in an exhaust gas waste heat utilization device based on a chain bucket conveyor of the present invention;

[0033] Figure 5 The present invention is a schematic structural diagram of a tensioning mechanism in an exhaust gas waste heat utilization device based on a chain bucket conveyor.

[0034] Description of the reference numerals in the accompanying drawings:

[0035] 1-gas collecting mechanism; 11-intake end cover; 12-cylindrical housing; 13-exhaust end cover;

[0036] 2- conveying mechanism; 21- chain bucket; 22- wheel; 23- chain bucket connecting plate; 24- track;

[0037] 3-transmission mechanism; 31-sprocket; 32-reducer; 33-transmission shaft; 34-motor; 35-bearing seat;

[0038] 4-tensioning mechanism; 41-tensioning spring; 42-shaft sleeve; 43-slider;

[0039] 5-Heat sink. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] Refer to the attached Figures 1 to 4As shown, an embodiment of the present application provides a device for efficiently utilizing waste heat from exhaust gas in the process of purifying and purifying metallic magnesium, comprising: a frame, a gas collecting mechanism 1, a conveying mechanism 2 and a transmission mechanism 3; the gas collecting mechanism 1 is fixedly arranged on the outside of the frame, the conveying mechanism 2 and the transmission mechanism 3 are both arranged on the frame, the transmission mechanism 3 drives the conveying mechanism 2 to complete the conveying of crude magnesium, the conveying mechanism 2 passes through the inside of the gas collecting mechanism 1, the gas collecting mechanism 1 collects high-temperature exhaust gas generated in the process of smelting crude magnesium, and uses the waste heat of the exhaust gas to preheat the transported crude magnesium to effectively utilize the exhaust gas.

[0045] Specifically:

[0046] like Figure 3 As shown, the gas collecting mechanism 1 includes an air inlet cover 11, a cylindrical shell 12 and an exhaust cover 13. The cylindrical shell 12 is fixedly arranged outside the frame and parallel to the frame. A circular cavity is arranged inside the cylindrical cavity to store waste gas. Heat sinks 5 are arranged inside the circular cavity and distributed in a circular array to collect and transfer heat. The air inlet cover 11 is fixedly arranged on one side of the cylindrical shell 12. A convex flange is arranged on one side of the air inlet cover 12 and connected to the cylindrical shell 12 by bolts. The exhaust cover 13 is arranged on the other side of the cylindrical shell 12 and is symmetrical with the center of the air inlet cover 11. An air inlet is arranged above the air inlet cover 11. The waste gas generated during the magnesium block smelting process is passed into the cylindrical shell 12 from the air inlet. The exhaust cover 13 is provided with an exhaust port on the top to discharge the waste gas in the cylindrical shell 12, thereby collecting and discharging the waste gas. High-temperature exhaust gas enters the cylindrical shell 12 from the air inlet and is discharged from the exhaust port. The exhaust gas temperature gradually decreases from the air inlet side to the exhaust port side. The crude magnesium is transported from one end of the exhaust end cover 13 to one end of the air inlet end cover. The temperature of the crude magnesium gradually increases from the exhaust port side to the air inlet side.

[0047] like Figure 2As shown, the conveying mechanism 2 includes a chain bucket 21, a wheel 22, a chain bucket connecting plate 23 and a circular track 24, wherein the chain bucket 21 is provided with a chain bucket connecting plate 23 on both sides parallel to the frame, the chain bucket 21 is connected to the chain bucket connecting plate 23 by bolts, the outer sides of the chain bucket connecting plates 23 on both sides are connected to the wheels 22 by shaft rotation, the wheels 22 on the same chain bucket are connected to the chain bucket connecting plate 23 to form a chain link, which can form a chain drive combination with the sprocket 31 of the transmission mechanism 3 to realize the steering of the conveying vehicle row. The chain bucket 21, the wheel 22 and the chain bucket connecting plate 23 form a material conveying trolley, the chain bucket connecting plate 23 between the trolleys is provided with a shorter connecting side plate, the connecting side plate and the chain bucket connecting plate 23 form a chain, and the chain drive is formed by the sprocket 31 of the transmission mechanism 3, and the trolleys are connected in series by chains to form a conveying vehicle row, and the wheels are installed on the circular track 24 to make the conveying vehicle row move along the track 21. The annular track 24 includes a straight track and a curved track, which are fixedly mounted on the frame. The straight track is arranged in two parallel sections, and the curved track is integrally formed at both ends of the straight track. The conveying vehicle row reciprocates along the annular track to complete the function of material transportation.

[0048] like Figure 4 and Figure 5 As shown, the transmission mechanism 3 includes a sprocket 31, a reducer 32, a transmission shaft 33, a motor 34 and a bearing seat 35, wherein the two sprockets 31 are connected to the bearing seat 35 through the transmission shaft 32, the bearing seat 35 is fixedly arranged on the frame, the two sprockets 31 are arranged correspondingly, the transmission shaft 32 and the frame are arranged vertically, a motor 34 and a reducer 32 are arranged at one end of the frame, and the motor 34 is connected to the input end of the transmission shaft 33 through a coupling to provide power for the sprocket 31. The sprocket 31 and the annular track 24 in the conveying mechanism 2 are arranged on the same center line to ensure that there is no lateral deviation when the vehicle row turns; the chain link composed of the wheel 22 and the chain bucket connecting plate 23 in the conveying mechanism 2 is meshed with the sprocket 31 to complete the steering function of the vehicle row.

[0049] At the same time, if Figure 5 As shown, the transmission mechanism 3 also includes a tensioning mechanism 4, which is a pair and respectively corresponding to the two sprockets 31. The tensioning mechanism 4 includes a tensioning spring 41, a sleeve 42 and a slider 43, wherein the sleeve 42 is fixedly sleeved on the transmission shaft 33, one end of the tensioning spring 41 is connected to the transmission shaft 33 through the sleeve 42, and the other end is fixedly set on the vertical partition of the frame by bolts. After the tensioning spring 41 is connected to the transmission shaft 33 through the sleeve 42, the slider 43 is also connected to the transmission shaft 33 through the bearing seat 35. When the movable slider moves horizontally on the frame, the tensioning spring 41 is driven to contract through the transmission shaft 33 to achieve the function of controlling the tension of the chain transmission.

[0050] It is not difficult to find that the embodiment of the present application provides a highly efficient waste heat utilization device for waste gas in the process of purifying and purifying magnesium metal. By setting a gas collecting mechanism outside the existing chain bucket conveyor, the high-temperature gas generated in the production process of magnesium blocks is passed into the gas collecting mechanism, thereby collecting the high-temperature waste gas generated after the heat treatment of the material, and using the waste heat of the waste gas to preheat the crude magnesium transported and transferred by the chain bucket conveyor, so as to effectively utilize the waste gas. At the same time, a cylindrical shell is arranged outside the conveying chain and is fixedly connected to the frame. The cylindrical shell plays a role in storing waste gas and also has a role in keeping the material warm.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal, characterized in that: include: frame; A conveying mechanism, the conveying mechanism is arranged on the frame, and the conveying mechanism is used to convey the crude magnesium to the smelting furnace; A transmission mechanism, the transmission mechanism is arranged on the frame and is used to drive the conveying mechanism to move; The gas collecting mechanism is arranged outside the frame, and the conveying mechanism conveys the crude magnesium inside the gas collecting mechanism. The gas collecting mechanism is used to collect high-temperature exhaust gas generated by the smelting of crude magnesium to preheat the crude magnesium carried by the conveying mechanism.

2. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 1, characterized in that: The conveying mechanism comprises: A conveyor vehicle row, wherein the conveyor vehicle row is composed of a plurality of conveyor vehicles connected in sequence by a chain, and the chain is in driving connection with the transmission mechanism; An annular track is installed on the frame, and the conveying vehicle row reciprocates along the annular track.

3. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 2, characterized in that: The conveying trolley comprises: Chain bucket; A chain bucket connecting plate, the chain bucket is fixedly connected to the chain bucket connecting plate, and the chain bucket connecting plates are connected by linking side plates to form the chain; A wheel is rotatably mounted on the outer side of the chain bucket connecting plate, and the wheel moves along the annular track.

4. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 2 or 3, characterized in that: The annular track comprises a straight track and a curved track. The straight track is arranged in two parallel sections, and the curved track is integrally formed at both ends of the straight track.

5. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 1, characterized in that: The transmission mechanism includes a sprocket, a transmission shaft, a bearing seat, a reducer and a motor. The bearing seat is installed on the frame, the sprocket is installed on the bearing seat through the transmission shaft, the reducer and the motor are arranged on one side of the frame, and the reducer is connected to the sprocket through the transmission shaft.

6. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 5, characterized in that: The transmission mechanism also includes a tensioning mechanism, and the tensioning mechanism includes: A tensioning spring, wherein the tensioning spring is fixed on the frame; A shaft sleeve, the shaft sleeve is fixedly sleeved on the transmission shaft, and the tension spring is fixedly connected to the shaft sleeve; A slider is connected to the transmission shaft through the bearing seat, and the slider is slidably arranged on the frame.

7. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 1, characterized in that: The air collecting mechanism includes an air inlet end cover, an exhaust end cover and a cylindrical shell, the cylindrical shell is arranged on the outside of the frame, the air inlet end cover and the exhaust end cover are arranged at both ends of the cylindrical shell, and the air inlet end cover is provided with an air inlet, and the exhaust end cover is provided with an air outlet.

8. The device for efficiently utilizing waste heat from exhaust gas during the purification of magnesium metal according to claim 7, characterized in that: A circumferential cavity is arranged inside the cylindrical shell, and heat sinks are arranged in a circumferential array inside the circumferential cavity.

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