Sintering flux cooling device and calcining furnace

Abstract

The utility model discloses a kind of sintering flux cooling devices, including air pipe, air-blast structure and screen mesh;Air pipe has air inlet end, air return end and with air inlet end and air return end intercommunication air inlet channel, and with feed inlet, discharge outlet and with feed inlet and discharge outlet intercommunication material drop channel, air inlet channel is communicated with material drop channel, and cross arrangement;Air-blast structure air outlet is connected with air inlet end intercommunication;Screen mesh is located in material drop channel or the air inlet channel of the utility model.In the scheme, high-temperature flux particles are moved from feed inlet to discharge outlet under gravity drive, and heat exchange with cold air input from air inlet end in moving process, realize the cooling of flux particles, at this time, screen mesh can effectively stop flux particles, avoid flux particles to be carried to air return end by wind, ensure that the flux particles after cooling can be discharged and collected via discharge outlet.And hot air after heat exchange enters calcining furnace again via air return end, improve heat recovery rate, and simple structure, relatively low cost.

Description

Technical Field

[0001] This utility model relates to the field of sintering flux cooling technology, specifically to a sintering flux cooling device and a calcining furnace. Background Technology

[0002] The sintering flux processing requires roasting in a roasting furnace. After roasting, the flux particles are at a very high temperature, and they need to be cooled before subsequent processing steps.

[0003] Publication number CN216177766U discloses a high-efficiency cooling device for sintered flux. In use, high-temperature flux particles output from the calcining furnace are lifted to a higher height by a screw conveyor, and are simultaneously cooled during the lifting process. Then, the flux particles enter the cooling cylinder and are further cooled by a fan during the falling process. By combining water cooling and air cooling, a good cooling effect is achieved, which greatly improves the cooling speed.

[0004] This patent describes a method of cooling flux particles by blowing cold air into the cooling cylinder using a fan. However, the cold air is directly exhausted after heat exchange with the flux particles, resulting in the direct loss of most of the heat from the flux particles, and the heat recovery rate needs to be improved. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a sintering flux cooling device and a calcining furnace to solve the technical problem that in the prior art, cold air is directly discharged after heat exchange with flux particles, most of the heat of the thermally conductive flux particles is directly lost, and the heat recovery rate needs to be improved.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a sintering flux cooling device, comprising:

[0008] The air duct has an air inlet end, a return air end, and an air inlet channel connected to the air inlet end and the return air end, and has a feed inlet, a discharge outlet, and a material falling channel connected to the feed inlet and the discharge outlet. The return air end is used to connect to the air inlet of the roasting furnace. The air inlet channel is connected to the material falling channel and is arranged in a cross manner.

[0009] A blower structure, the air outlet of which is connected to the air inlet, is used to supply air to the return air end; and

[0010] A screen is provided in the material falling channel or the air inlet channel to prevent material from flowing out through the air inlet channel.

[0011] In some embodiments, the sintering flux cooling device further includes a plurality of flow dividers, which are disposed at the feed inlet and arranged sequentially at intervals along the horizontal direction.

[0012] In some embodiments, the distance between two adjacent diverter plates is adjustable;

[0013] The sintering flux cooling device also includes a locking structure, which is located between the diverter plate and the air duct, and restricts the movement of the diverter plate when the distance between two adjacent diverter plates is adjusted to a preset value.

[0014] In some embodiments, the sintering flux cooling device further includes a flow divider hood, the flow divider hood having a discharge port and a guide port, the discharge port being connected to the feed port, the side wall of the flow divider hood being provided with a limiting groove, the limiting groove extending along the arrangement direction of the plurality of flow dividers, and each flow divider being provided with a connecting hole corresponding to the limiting groove;

[0015] The locking structure includes a locking bolt and a locking nut. The locking bolt passes through the connecting hole and the limiting groove in sequence, and the locking nut is screwed onto the end of the locking bolt that extends out of the limiting groove.

[0016] In some embodiments, the feed inlet is provided with a connecting pipe facing outward, and one end of the flow divider with the discharge port extends into the connecting pipe and is detachably connected to the connecting pipe.

[0017] In some embodiments, the sintering flux cooling device further includes a feed hopper connected to the feed inlet and used to collect materials output from the calcining furnace.

[0018] In some embodiments, the sintering flux cooling device further includes a collection box and a collection pipe, wherein the collection pipe connects the inner cavity of the collection box to the discharge port.

[0019] In some embodiments, the sintering flux cooling device further includes a valve, a lifting frame, and rollers. The valve is located at the discharge port, the lifting frame is positioned below the discharge port and has a support frame and a movable frame. The movable frame is capable of lifting relative to the support frame, and the rollers are located at the bottom of the support frame.

[0020] The collection bin is placed on the movable frame.

[0021] In some embodiments, the screen is inclined from the top to the bottom in a direction close to the air inlet, and its lower end is located at the edge of the outlet near the return air end.

[0022] In some embodiments, the duct further has an installation port communicating with the outside and its inner cavity, the installation port being located on the side of the inlet and the outlet near the return air end;

[0023] The screen can extend into the inner cavity of the air duct from the installation port and is detachably connected to the air duct.

[0024] Secondly, this solution also provides a calcining furnace, which includes the sintering flux cooling device as described in any of the above claims.

[0025] Compared with existing technologies, the sintering flux cooling device provided by this utility model delivers high-temperature flux particles discharged from the calcining furnace into the air duct through the feed inlet. Driven by their own weight, the high-temperature flux particles move from the feed inlet to the discharge outlet, exchanging heat with the cold air input from the air inlet during the movement, thus cooling the flux particles. At this time, the screen effectively blocks the flux particles, preventing them from being carried by the air to the return air end, ensuring that the cooled flux particles can be discharged and collected through the discharge outlet. The cold air, after heat exchange, rises in temperature to form hot air, which then re-enters the calcining furnace through the return air end, thereby improving the heat recovery rate. Furthermore, the device has a simple structure and low cost. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the sintering flux cooling device provided in this embodiment of the utility model;

[0027] Figure 2 yes Figure 1 Cross-sectional view of the central duct, blower structure, and screen;

[0028] Figure 3 yes Figure 1 Exploded view of the central duct, blower structure, and screen;

[0029] Figure 4 yes Figure 3 A partial schematic diagram of the central fairing, diffuser plate, and locking structure;

[0030] Figure 5 yes Figure 4 Schematic diagram of the middle splitter plate and locking structure;

[0031] Figure 6 yes Figure 2 A partial schematic diagram of the central duct, diffuser hood, and diffuser plate;

[0032] Figure 7 yes Figure 6 A partially enlarged schematic diagram of the central duct, diversion hood, and diversion plate;

[0033] Figure 8 yes Figure 1 A schematic diagram of the central material bin.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Air duct; 1a. Inlet; 1b. Outlet; 1c. Mounting port; 1d. Air inlet channel; 1e. Material drop channel; 11. Air inlet end; 12. Air return end; 13. Connecting pipe; 14. Outlet pipe; 2. Blower structure; 3. Screen; 4. Diverter plate; 4a. Connecting hole; 5. Locking structure; 51. Locking bolt; 52. Locking nut; 6. Diverter hood; 6a. Discharge port; 6b. Guide port; 6c. Limiting groove; 7. Guide hopper; 8. Lifting frame; 81. Support frame; 82. Movable frame; 83. Roller; 9. Collection box; 91. Collection pipe. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] To address the technical problem in existing technologies where cold air is directly discharged after heat exchange with flux particles, resulting in the direct loss of most of the heat from the thermally conductive flux particles and a need to improve the heat recovery rate, this utility model provides a sintering flux cooling device and a roasting furnace. Hot air can re-enter the roasting furnace through the return air end, improving the heat recovery rate. Furthermore, the device has a simple structure and low cost.

[0038] Please see Figures 1 to 3 , Figures 1 to 3 This is a schematic diagram of the structure of a sintering flux cooling device in one embodiment of the present invention. The sintering flux cooling device includes an air duct 1, a blower structure 2, and a screen 3. The air duct 1 has an air inlet end 11, a return air end 12, and an air inlet channel 1d connected to the air inlet end 11 and the return air end 12. It also has a feed inlet 1a, a discharge outlet 1b, and a material falling channel 1e connected to the feed inlet 1a and the discharge outlet 1b. The return air end 12 is used to connect to the air inlet of the roasting furnace. The air inlet channel 1d is connected to the material falling channel 1e and is arranged in a cross manner. The air outlet of the blower structure 2 is connected to the air inlet end 11 and is used to send air to the return air end 12. The screen 3 is provided in the material falling channel 1e or the air inlet channel 1d and is used to block the material from flowing out through the air inlet channel 1d.

[0039] In the sintering flux cooling device provided by this utility model, high-temperature flux particles discharged from the calcining furnace are fed into the air duct 1 through the feed inlet 1a. Driven by their own weight, the high-temperature flux particles move from the feed inlet 1a to the discharge outlet 1b, and exchange heat with the cold air input from the air inlet 11 during the movement, thereby cooling the flux particles. At this time, the screen 3 can effectively block the flux particles, preventing them from being carried by the air to the return air end 12, ensuring that the cooled flux particles can be discharged and collected through the discharge outlet 1b. The temperature of the cold air after heat exchange rises to form hot air, which re-enters the calcining furnace through the return air end 12, thereby improving the heat recovery rate. The device has a simple structure and low cost.

[0040] It should be noted that the blower structure 2 can be configured as a blower, blower box, or fan, etc. Specifically, in this solution, the blower structure 2 is configured as a blower. Furthermore, it should be understood that the aperture of the screen 3 is smaller than the particle size of the flux particles.

[0041] Specifically, in this scheme, the feed inlet 1a is located above the discharge outlet 1b, and is located between the air inlet 11 and the return air end 12; the blower structure 2 is located at the air inlet 11 and is used to supply air to the return air end 12; the screen 3 is located in the air inlet channel 1d of the air duct 1 and is located on the side of the feed inlet 1a and the discharge outlet 1b near the return air end 12.

[0042] In one embodiment, please refer to Figure 4 and Figure 5 The sintering flux cooling device also includes multiple flow dividers 4, which are located at the feed inlet 1a and are arranged sequentially at intervals along the horizontal direction.

[0043] In this embodiment, multiple diversion plates 4 are arranged at intervals at the feed inlet 1a to divert the flux particles entering the air duct 1 from the feed inlet 1a, thereby preventing the flux particles from accumulating in the air duct 1, increasing the contact area between the air and the flux particles, and thus improving the heat exchange rate.

[0044] In one embodiment, please refer to Figure 6 and Figure 7 The distance between two adjacent diversion plates 4 is adjustable; the sintering flux cooling device also includes a locking structure 5, which is located between the diversion plate 4 and the air duct 1, and restricts the movement of the diversion plate 4 when the distance between two adjacent diversion plates 4 is adjusted to a preset value.

[0045] In this embodiment, the distance between two adjacent flow dividers 4 is set to be adjustable, so that the number of flux particles flowing simultaneously in each flow channel can be flexibly adjusted, thereby flexibly adjusting the cooling efficiency and heat exchange efficiency, which has good practicality.

[0046] It should be noted that the locking structure 5 can be set as a magnetic attraction, a snap-on mechanism, or other forms.

[0047] In one embodiment, the sintering flux cooling device further includes a flow divider 6, which has a discharge port 6a and a guide port 6b. The discharge port 6a is connected to the inlet port 1a. The side wall of the flow divider 6 is provided with a limiting groove 6c, which extends along the arrangement direction of the multiple flow dividers 4. Each flow divider 4 is provided with a connecting hole 4a corresponding to the limiting groove 6c. The locking structure 5 includes a locking bolt 51 and a locking nut 52. The locking bolt 51 is sequentially inserted into the connecting hole 4a and the limiting groove 6c, and the locking nut 52 is screwed onto the end of the locking bolt 51 that extends out of the limiting groove 6c.

[0048] In this embodiment, the locking nut 52 can be loosened first, and then the diverter plate 4 can be moved along the extension direction of the limiting groove 6c to adjust the distance between two adjacent diverter plates 4. Then, the locking nut 52 can be tightened to restrict the movement of the diverter plate 4 relative to the diverter shroud 6. The structure is simple and reliable. It should be understood that in this solution, each diverter plate 4 is provided with a set of locking nuts 52 and locking bolts 51.

[0049] In one embodiment, the feed inlet 1a is provided with a connecting pipe 13 facing outward, and the end of the flow divider 6 with the discharge port 6a extends into the connecting pipe 13 and is detachably connected to the connecting pipe 13.

[0050] In this embodiment, the flow divider 6 is detachably connected to the connecting pipe 13 so that when adjusting the spacing between adjacent flow dividers 4, the flow divider 6 can be detached from the connecting pipe 13 first, the spacing between the flow dividers 4 can be adjusted, and the flow divider 6 can be reassembled with the connecting pipe 13 after the spacing is adjusted, thereby improving the convenience of adjusting the flow dividers 4.

[0051] It should be noted that the connecting pipe 13 and the diverter 6 can be detached and connected by bolts, or by clips or threads. Specifically, in this solution, the connecting pipe 13 and the diverter 6 are detachably connected by bolts.

[0052] In one embodiment, the sintering flux cooling device further includes a feed hopper 7, which is connected to a feed port 6b and is used to receive materials output from the calcining furnace.

[0053] In this embodiment, the flux particles output from the roasting furnace are directly collected by the feed hopper 7. The flux particles in the feed hopper 7 are driven by their own weight to enter the air duct 1 through the feed port 6b. In this way, the continuously descending flux particles in the feed hopper 7 can form a certain sealing effect on the feed port 6b, preventing hot air from being discharged from the feed port 6b, and further improving the heat recovery rate.

[0054] In one embodiment, the sintering flux cooling device further includes a collection box 9 and a collection pipe 91, the collection pipe 91 connecting the inner cavity of the collection box 9 and the discharge port 1b.

[0055] In this embodiment, the discharge port 1b is also connected by the collection pipe 91, so that the flux discharged from the discharge port 1b can be directly collected in the collection box 9, improving convenience.

[0056] In one embodiment, please refer to Figure 8 The sintering flux cooling device also includes a valve, a lifting frame 8 and rollers 83. The valve is located at the discharge port 1b. The lifting frame 8 is located below the discharge port 1b and has a support frame 81 and a movable frame 82. The movable frame 82 can be raised and lowered relative to the support frame 81. The rollers 83 are located at the bottom of the support frame 81. The collection box 9 is placed on the movable frame 82.

[0057] In this embodiment, when the flux particles in the collection box 9 are collected to a preset amount, the outlet 1b is first closed by the valve, then the movable frame 82 is lowered so that the collection pipe 91 is separated from the outlet 1b. Then the collection box 9 filled with flux particles is removed from the movable frame 82, and an empty collection box 9 is placed. Finally, the empty collection box 9 is connected to the outlet 1b.

[0058] It should be noted that a discharge pipe 14 is provided at the discharge port 1b, and a collecting pipe 91 is sleeved on the outer periphery of the discharge pipe 14, with a sealing ring between the two; similarly, a sealing ring is also provided between the guide hopper 7 and the diversion hood 6. The movement of the movable frame 82 relative to the support frame 81 can be in the form of a hydraulic cylinder, an electric actuator, or a linear motor, and is not limited here.

[0059] Furthermore, in one embodiment, a water jacket can be installed on the collection box 9 to absorb the residual heat of the flux particles in the collection box 9. Additionally, stirring blades can be provided in the collection box 9, and a motor can be installed outside the collection box 9 to drive the stirring blades to rotate, thereby stirring the flux particles and facilitating uniform heat dissipation.

[0060] In one embodiment, the screen 3 is inclined from the top to the bottom along the direction close to the air inlet 11, and its lower end is located at the edge of the outlet 1b near the return air end 12.

[0061] In this embodiment, the screen 3 is tilted as shown above, so that when the flux particles are carried to the screen 3 by the wind, they can move down along the inclined surface of the screen 3 to the outlet 1b, which prolongs the contact time between the flux particles and the cold air, improves the heat recovery efficiency, and achieves effective cooling of the flux particles.

[0062] In one embodiment, the duct 1 also has an installation port 1c that connects the outside to its inner cavity. The installation port 1c is located on the side of the inlet 1a and outlet 1b near the return air end 12. The screen 3 can extend into the inner cavity of the duct 1 through the installation port 1c and is detachably connected to the duct 1.

[0063] In this embodiment, after the cooling device has been used for a preset time, the screen 3 is removed from the installation port 1c of the air duct 1, and the screen 3 is cleaned to prevent broken flux particles from clogging the screen 3 and reducing the airflow efficiency. It should be noted that the detachable connection between the screen 3 and the air duct 1 can be a bolt connection, a snap-fit ​​connection, or an interference fit.

[0064] Specifically, in this solution, the screen 3 and the outer wall of the air duct 1 are detachably connected by bolts, and a pull handle is provided on the side of the screen 3 extending out of the installation port 1c to facilitate the removal and placement of the screen 3 and improve the ease of disassembly and assembly of the screen 3.

[0065] To better understand this utility model, the following is combined with... Figures 1 to 8 The technical solution of this utility model is described in detail below:

[0066] In this scheme, the high-temperature flux particles discharged from the calcining furnace first enter the guide hopper 7, and then are sequentially fed into the air duct 1 via the guide hopper 7, the guide port 6b, and the feed port 1a. During this process, the high-temperature flux particles move towards the discharge port 1b under their own weight, and exchange heat with the cold air input from the air inlet 11 during the movement, thereby cooling the flux particles. The temperature of the cold air after heat exchange rises to form hot air, which then re-enters the calcining furnace via the return air end 12, thereby improving the heat recovery rate.

[0067] When flux particles are carried by the wind to the screen 3, they can move along the inclined direction of the screen 3 to the discharge port 1b, and then enter the collection box 9 through the discharge port 1b for collection. The screen 3 can effectively block the flux particles, prevent the flux particles from being carried by the wind to the return air end 12, and ensure that the cooled flux particles can be discharged and collected through the discharge port 1b.

[0068] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A sintering flux cooling device, characterized in that, include: The air duct has an air inlet end, a return air end, and an air inlet channel connected to the air inlet end and the return air end, and has a feed inlet, a discharge outlet, and a material falling channel connected to the feed inlet and the discharge outlet. The return air end is used to connect to the air inlet of the roasting furnace. The air inlet channel is connected to the material falling channel and is arranged in a cross manner. The blower structure has an air outlet connected to the air inlet for supplying air to the return air end; and A screen is provided in the material falling channel or the air inlet channel to prevent material from flowing out through the air inlet channel.

2. The sintering flux cooling device according to claim 1, characterized in that, The sintering flux cooling device also includes multiple flow dividers, which are located at the feed inlet and are arranged sequentially at intervals along the horizontal direction.

3. The sintering flux cooling device according to claim 2, characterized in that, The distance between two adjacent flow dividers is adjustable; The sintering flux cooling device also includes a locking structure, which is located between the diverter plate and the air duct, and restricts the movement of the diverter plate when the distance between two adjacent diverter plates is adjusted to a preset value.

4. The sintering flux cooling device according to claim 3, characterized in that, The sintering flux cooling device also includes a flow divider, which has a discharge port and a guide port. The discharge port is connected to the feed port. The side wall of the flow divider is provided with a limiting groove. The limiting groove extends along the arrangement direction of the plurality of flow dividers. Each flow divider is provided with a connecting hole corresponding to the limiting groove. The locking structure includes a locking bolt and a locking nut. The locking bolt passes through the connecting hole and the limiting groove in sequence, and the locking nut is screwed onto the end of the locking bolt that extends out of the limiting groove.

5. The sintering flux cooling device according to claim 4, characterized in that, The feed inlet is provided with a connecting pipe facing outwards, and one end of the flow divider hood with the discharge port extends into the connecting pipe and is detachably connected to the connecting pipe.

6. The sintering flux cooling device according to claim 4, characterized in that, The sintering flux cooling device also includes a feed hopper, which is connected to the feed inlet and is used to collect materials output from the calcining furnace.

7. The sintering flux cooling device according to claim 1, characterized in that, The sintering flux cooling device also includes a collection box and a collection pipe, wherein the collection pipe connects the inner cavity of the collection box with the discharge port.

8. The sintering flux cooling device according to claim 7, characterized in that, The sintering flux cooling device also includes a valve, a lifting frame, and rollers. The valve is located at the discharge port, the lifting frame is located below the discharge port, and has a support frame and a movable frame. The movable frame can be raised and lowered relative to the support frame, and the rollers are located at the bottom of the support frame. The collection bin is placed on the movable frame.

9. The sintering flux cooling device according to claim 1, characterized in that, The screen is inclined from top to bottom along the direction close to the air inlet, and its lower end is located at the edge of the outlet near the return air end.

10. A roasting furnace, characterized in that, Includes the sintering flux cooling device as described in any one of claims 1 to 9.

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