Tubular acidification cooling kiln

Abstract

The utility model relates to a tubular acidification cooling kiln which comprises a feeding device, a kiln body, a water cooling device and a supporting device, a discharging port of the feeding device is connected with a feeding port of the kiln body, the water cooling device comprises a plurality of water cooling units and a flow dividing connector, each water cooling unit comprises a plurality of heat exchange pipes, the heat exchange pipes are installed in the kiln body, and the supporting device is connected with the water cooling units. The length direction of the heat exchange pipes is the same as the length direction of the kiln body, the flow dividing connector is installed at one end of the kiln body, the heat exchange pipes comprise a plurality of water inlet pipes and a plurality of water return pipes, and the ends, away from the flow dividing connector, of the water inlet pipes are communicated with the ends, away from the flow dividing connector, of the water return pipes. The water outlet is communicated with one end, close to the shunting joint, of the water return pipe; the supporting device is installed below the kiln body and used for supporting the kiln body. Compared with an air cooling system, the heat exchange efficiency is higher, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling kiln equipment, in particular to a tubular acidification cooling kiln. Background Art

[0002] In the lithium extraction process, after spodumene is transformed through high-temperature calcination in a rotary kiln, it needs to be cooled in order to facilitate subsequent processing. Currently, the industry mostly uses cooling kilns to cool high-temperature spodumene.

[0003] Traditional cooling kilns mostly use air cooling, and the air cooling system has the advantage of simple equipment structure, but its cooling efficiency is low. For example, Chinese utility model patent CN220322062 U discloses a lepidolite clinker cooling device, including a cooling kiln body, a spray cooling mechanism arranged on the cooling kiln body, and an air cooling mechanism connected to the cooling kiln body, the air cooling mechanism includes a cooling fan and a cooling air duct, the cooling air duct is rotatably connected to the end of the cooling kiln body, and the cooling gas of the cooling fan is introduced into the cooling kiln body to cool the clinker in the kiln; the air outlet direction of the cooling air duct is opposite to the clinker feeding direction in the cooling kiln body. The utility model cools the material in the cooling kiln by air cooling, but the material will be broken into finer particles before calcination. The cooling wind acts on the material in the cooling kiln and can only cool a layer of material on the surface of the cooling kiln. Although the cooling kiln is in a rotating state during operation, some of the material accumulated at the bottom of the cooling kiln will slide along the kiln wall. This part of the material always has heat accumulation, which is not conducive to the overall heat dissipation and cooling of the material. Therefore, the air cooling method has low cooling efficiency for the material. Utility Model Content

[0004] The utility model provides a tubular acidification cooling kiln to solve the technical problem of low cooling efficiency of air-cooled cooling kilns in the prior art.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: the utility model relates to a shell-and-tube acidification cooling kiln, which includes a feeding device, a kiln body, a water cooling device and a supporting device. The discharge port of the feeding device is connected with the feed port of the kiln body. The water cooling device includes a plurality of water cooling units and a diverter joint. The water cooling unit includes a plurality of heat exchange tubes. The plurality of heat exchange tubes are installed in the kiln body. The length direction of the plurality of heat exchange tubes is the same as the length direction of the kiln body. The diverter joint is installed at one end of the kiln body. The plurality of heat exchange tubes include a plurality of water inlet pipes and a plurality of water return pipes. An end of the water inlet pipe away from the diverter joint is connected with an end of the water return pipe away from the diverter joint. A water inlet and a water outlet are provided on the diverter joint. The water inlet is connected with an end of the water inlet pipe close to the diverter joint, and the water outlet is connected with an end of the return pipe close to the diverter joint. The supporting device is installed under the kiln body to support the kiln body.

[0006] Furthermore, the diverter joint includes a rotating component and a stationary component, the rotating component includes an inner tube and an outer tube, the inner tube is fixedly installed in the outer tube, one end of the water inlet pipe close to the diverter joint is connected to the inner tube, an annular cavity is formed between the inner tube and the outer tube, and one end of the water outlet pipe close to the diverter joint is connected to the annular cavity; the stationary component includes a shell, a water inlet cavity and a water outlet cavity are provided in the shell, an insulation board is provided between the water inlet cavity and the water outlet cavity, one end of the inner tube away from the kiln body passes through the insulation board, a dynamic sealing device is provided between the inner tube and the insulation board, one end of the inner tube is located in the water inlet cavity, one end of the outer tube away from the kiln body is located in the shell, a dynamic sealing device is provided between the outer tube and the shell, and the water outlet is connected to the water outlet cavity.

[0007] Furthermore, the diverter joint also includes an end cover, a first diverter pipe and a second diverter pipe. The end cover is installed on the end of the kiln body close to the diverter joint. A cold water chamber and a return water chamber are provided on the end cover. One end of several water inlet pipes close to the diverter joint is connected to the cold water chamber, one end of the first diverter pipe is connected to the cold water chamber, and the other end of the first diverter pipe is connected to the inside of the inner tube; one end of several return water pipes close to the diverter joint is connected to the return water chamber, one end of the second diverter pipe is connected to the return water chamber, and the other end of the second diverter pipe is connected to the annular chamber.

[0008] Furthermore, the cold water chamber is an annular structure, the return water chamber is an annular structure, the cold water chamber is located inside the return water chamber, and an insulation layer is provided between the return water chamber and the cold water chamber.

[0009] Furthermore, the water inlet pipe and the water return pipe in each water cooling unit are arranged side by side, and a plurality of water cooling units are arranged in a circular array inside the kiln body.

[0010] Furthermore, the water cooling unit includes three water inlet pipes and one water return pipe, the water return pipe is located outside the three water inlet pipes, and the diameters of the water inlet pipes and the water return pipes in the water cooling unit gradually increase from the inside to the outside.

[0011] Furthermore, a plurality of support rings are sleeved on the kiln body, and the support rings are arranged at intervals on the kiln body. The support device includes a support platform, and a plurality of supporting wheels are rotatably mounted on the support platform. Both left and right sides of the lower part of the support ring are in contact with the supporting wheels, and the height of the kiln body discharge end is lower than the height of the kiln body feed end.

[0012] Furthermore, it also includes a driving device, which includes an outer gear ring, a gear and a motor. The outer gear ring is sleeved on the kiln body and fixedly connected to the kiln body. The gear is rotatably installed on the support platform, the gear is meshed with the outer gear ring, the motor is fixedly installed on the support platform, and the motor is transmission-connected to the gear. The feeding device is a spiral feeding device, and the discharge port of the spiral feeding device is connected to the feed port of the kiln body.

[0013] Furthermore, more than four first shunt tubes are provided, and a plurality of first shunt tubes are arranged in a circular array on the outside of the outer tube; more than four second shunt tubes are provided, and a plurality of second shunt tubes are arranged in a circular array on the outside of the inner tube.

[0014] Furthermore, a plurality of heat exchange tube supports are fixedly installed in the kiln body, a U-shaped groove is provided on the heat exchange tube support, the heat exchange tube is located in the U-shaped groove, a fixing plate is installed on the U-shaped groove, the heat exchange tube and the fixing plate are staggered along the direction of the U-shaped groove, and the shapes of both sides of the fixing plate are adaptively matched with the outer wall of the heat exchange tube.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] (1) The utility model is a tubular acidification kiln body, in which a plurality of heat exchange tubes are arranged, and the plurality of heat exchange tubes include a water inlet pipe and a water return pipe. Cooling water enters the water inlet pipe from one end of the kiln body to cool the material, and then enters the water return pipe from the other end of the kiln body and is discharged from the cooling water inlet end of the kiln body. The cooling water exchanges heat with the material during the reciprocating stroke in the kiln body, and can fully contact and exchange heat with the material in the kiln body through the heat exchange tubes. Compared with the air cooling system, it has higher heat exchange efficiency and simple structure.

[0017] (2) In the utility model, the inlet and outlet of cooling water are both at the same end of the kiln body by setting a diverter joint at the end of the kiln body. The diverter joint includes a rotating component and a stationary component. A dynamic sealing device is provided between the rotating component and the stationary component. The rotating component rotates synchronously with the kiln body, so that the cooling water inlet and outlet processes do not affect each other. This not only increases the cooling water travel in the kiln body and improves the heat exchange efficiency of the cooling water, but also avoids the temperature loss caused by the return water from the outside of the kiln body, thereby improving the utilization rate of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the tubular acidification cooling kiln involved in the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the tubular acidification cooling kiln involved in the utility model;

[0020] Figure 3 for Figure 2 Sectional view at HH in the middle;

[0021] Figure 4 for Figure 2 Partial cross-sectional view at A in the middle;

[0022] Figure 5 for Figure 2 A partial cross-sectional view at point B in the middle;

[0023] Figure 6 for Figure 3 Partial cross-sectional view at point C in the middle.

[0024] Illustrations: 1-screw feeding device; 2-kiln body; 3-diverter joint; 31-outer tube; 32-inner tube; 33-annular cavity; 34-water inlet; 35-water inlet cavity; 36-water outlet cavity; 37-water outlet; 38-end cover; 381-cold water cavity; 382-return water cavity; 383-insulation layer; 39-first diverter pipe; 40-second diverter pipe; 41-shell; 42-insulation board; 4-support ring; 5-outer gear ring; 6-support platform; 7-support wheel; 8-motor; 9-heat exchange tube bracket; 91-U-shaped groove; 10-water cooling unit; 11-return water pipe; 12-water inlet pipe; 13-fixed plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will further describe the implementation of the utility model in conjunction with the accompanying drawings. The following is a preferred embodiment of the utility model among multiple possible embodiments, which is intended to provide a basic understanding of the utility model, but is not intended to confirm the key or decisive elements of the utility model or limit the scope of protection.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0028] See also Figures 1 to 6The utility model relates to a tubular acidification cooling kiln, which comprises a spiral feeding device 1, a kiln body 2, a water cooling device and a supporting device. The discharge port of the spiral feeding device 1 is connected with the feed port of the kiln body 2. The water cooling device comprises a plurality of water cooling units 10 and a diverter joint 3. The water cooling unit 10 comprises a plurality of heat exchange tubes, which are installed in the kiln body 2. The length direction of the plurality of heat exchange tubes is the same as the length direction of the kiln body 2. The diverter joint 3 is installed at one end of the kiln body 2. The plurality of heat exchange tubes comprise a plurality of water inlet pipes 12 and a plurality of water return pipes 11. The end of the water inlet pipe 12 away from the diverter joint 3 is connected with the end of the water return pipe 11 away from the diverter joint 3. A water inlet 32 ​​and a water outlet 37 are provided on the diverter joint 3. The water inlet 34 is connected with the end of the water inlet pipe 12 close to the diverter joint 3, and the water outlet 37 is connected with the end of the water return pipe 11 close to the diverter joint 3. The supporting device is installed below the kiln body 2 to support the kiln body 2.

[0029] See also Figures 1 to 6 The flow diverter joint 3 in the utility model includes a rotating component and a stationary component, the rotating component includes an inner tube 32 and an outer tube 31, the inner tube 32 is fixedly installed in the outer tube 31, the end of the water inlet pipe 12 close to the flow diverter joint 3 is connected to the inner tube 32, an annular cavity 33 is formed between the inner tube 32 and the outer tube 31, and the end of the water outlet pipe 12 close to the flow diverter joint 3 is connected to the annular cavity 33; the stationary component includes a shell 41, a water inlet cavity 35 and a water outlet cavity 36 are arranged in the shell 41, a heat insulation board 42 is arranged between the water inlet cavity 35 and the water outlet cavity 36, an end of the inner tube 32 away from the kiln body 2 passes through the heat insulation board 42, a dynamic sealing device is arranged between the inner tube 32 and the heat insulation board 42, one end of the inner tube 32 is located in the water inlet cavity 35, an end of the outer tube 31 away from the kiln body is located in the shell 41, a dynamic sealing device is arranged between the outer tube 31 and the shell 41, and the water outlet 37 is connected to the water outlet cavity 36. The dynamic sealing device can be a packing seal, a mechanical seal, etc.

[0030] The flow diverter joint 3 in this embodiment further includes an end cap 38, a first flow diverter pipe 39 and a second flow diverter pipe 40. The end cap 38 is mounted on the end of the kiln body 2 near the flow diverter joint 3. A cold water chamber 381 and a return water chamber 382 are provided on the end cap 38. One end of a plurality of water inlet pipes 12 near the flow diverter joint 3 is connected to the cold water chamber 381. One end of the first flow diverter pipe 39 is connected to the cold water chamber 381. The other end of the first flow diverter pipe 39 is connected to the inside of the inner tube 32. One end of a plurality of return water pipes 11 near the flow diverter joint 3 is connected to the return water chamber 382. One end of the second flow diverter pipe 40 is connected to the return water chamber 382. The other end of the second flow diverter pipe 40 is connected to the annular chamber 33. The cold water chamber 381 is an annular structure. The return water chamber 382 is an annular structure. The cold water chamber 381 is located inside the return water chamber 382. A heat insulation layer 383 is provided between the return water chamber 382 and the cold water chamber 381. The cooling water unit 10 in this embodiment includes three water inlet pipes 12 and one water return pipe 11 arranged side by side, and a plurality of water cooling units 10 are arranged in a circular array inside the kiln body 2. The water return pipe 11 in the water cooling unit 10 is located outside the three water inlet pipes 12, and the diameters of the water inlet pipe 12 and the water return pipe 11 in the water cooling unit 10 gradually increase from the inside to the outside.

[0031] See also Figures 1 to 6 , a plurality of support rings 4 are sleeved on the kiln body 2, and the support rings 4 are arranged at intervals on the kiln body 2. The support device includes a support platform 6, and a plurality of supporting wheels 7 are rotatably mounted on the support platform 6. Both the left and right sides of the lower part of the support ring 4 are in contact with the supporting wheels 7. The height of the discharge end of the kiln body 2 is lower than the height of the feed end of the kiln body 2. This embodiment also includes a driving device, which includes an outer gear ring 5, a gear (not shown in the figure) and a motor 8. The outer gear ring 5 is sleeved on the kiln body 2 and fixedly connected to the kiln body 2. The gear is rotatably mounted on the support platform 6, and the gear is meshed with the outer gear ring 5. The motor 8 is fixedly mounted on the support platform 6, and the motor 8 is connected to the gear transmission. In this embodiment, the kiln body 2 rotates under the drive of the motor 8. Four first shunt pipes 39 are provided, and the four first shunt pipes 39 are arranged in a circular array on the outside of the outer pipe 31; more than four second shunt pipes 40 are provided, and the four second shunt pipes 40 are arranged in a circular array on the outside of the inner pipe 32. A plurality of heat exchange tube supports 9 are fixedly installed in the kiln body 2. The heat exchange tube supports 9 are provided with U-shaped grooves 91. A water cooling unit 10 consisting of four heat exchange tubes is located in the U-shaped grooves 91. A fixing plate 13 is installed on the U-shaped grooves 91. The fixing plate 13 and the heat exchange tubes in the water cooling unit 10 are alternately arranged along the direction of the U-shaped grooves 91. The shapes of both sides of the fixing plate 13 are adaptively matched with the outer walls of the heat exchange tubes.

[0032] The utility model relates to a tubular acidification cooling kiln, in which a plurality of heat exchange tubes are arranged, and the plurality of heat exchange tubes include a water inlet pipe and a water return pipe. Cooling water enters the water inlet pipe from one end of the kiln body to cool materials, and then enters the water return pipe from the other end of the kiln body and is discharged from the cooling water inlet end of the kiln body. The cooling water exchanges heat with the materials during the reciprocating stroke in the kiln body, and can fully contact and exchange heat with the materials in the kiln body through the heat exchange tubes. Compared with an air cooling system, the cooling water has a higher heat exchange efficiency and a simple structure.

[0033] In the utility model, the inlet and outlet of cooling water are both at the same end of the kiln body by setting a diverter joint at the end of the kiln body. The diverter joint includes a rotating component and a stationary component. A dynamic sealing device is provided between the rotating component and the stationary component. The rotating component rotates synchronously with the kiln body, so that the cooling water inlet and outlet processes do not affect each other. In this way, the cooling water travel in the kiln body is increased, the heat exchange efficiency of the cooling water is improved, and the temperature loss generated when the water returns from the outside of the kiln body is avoided, thereby improving the utilization rate of the cooling water.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tubular acidification cooling kiln, characterized in that: It includes a feeding device, a kiln body, a water cooling device and a supporting device. The discharge port of the feeding device is connected with the feed port of the kiln body. The water cooling device includes a plurality of water cooling units and diverter joints. The water cooling unit includes a plurality of heat exchange tubes. The plurality of heat exchange tubes are installed in the kiln body. The length direction of the plurality of heat exchange tubes is the same as the length direction of the kiln body. The diverter joint is installed at one end of the kiln body. The plurality of heat exchange tubes include a plurality of water inlet pipes and a plurality of water return pipes. An end of the water inlet pipe away from the diverter joint is connected with an end of the water return pipe away from the diverter joint. A water inlet and a water outlet are provided on the diverter joint. The water inlet is connected with an end of the water inlet pipe close to the diverter joint, and the water outlet is connected with an end of the water return pipe close to the diverter joint. The supporting device is installed under the kiln body to support the kiln body.

2. The tubular acidification and cooling kiln according to claim 1, characterized in that: The diverter joint includes a rotating component and a stationary component. The rotating component includes an inner tube and an outer tube. The inner tube is fixedly installed in the outer tube. One end of the water inlet pipe close to the diverter joint is connected to the inner tube. An annular cavity is formed between the inner tube and the outer tube. One end of the water outlet pipe close to the diverter joint is connected to the annular cavity. The stationary component includes a shell. A water inlet cavity and a water outlet cavity are arranged in the shell. A heat insulation board is arranged between the water inlet cavity and the water outlet cavity. One end of the inner tube away from the kiln body passes through the heat insulation board. A dynamic sealing device is arranged between the inner tube and the heat insulation board. One end of the inner tube is located in the water inlet cavity. One end of the outer tube away from the kiln body is located in the shell. A dynamic sealing device is arranged between the outer tube and the shell. The water outlet is connected to the water outlet cavity.

3. The tubular acidification and cooling kiln according to claim 2, characterized in that: The diverter joint also includes an end cover, a first diverter pipe and a second diverter pipe. The end cover is installed on the end of the kiln body close to the diverter joint. A cold water chamber and a return water chamber are arranged on the end cover. One end of a plurality of water inlet pipes close to the diverter joint is connected to the cold water chamber, one end of the first diverter pipe is connected to the cold water chamber, and the other end of the first diverter pipe is connected to the inside of the inner tube; one end of a plurality of return water pipes close to the diverter joint is connected to the return water chamber, one end of the second diverter pipe is connected to the return water chamber, and the other end of the second diverter pipe is connected to the annular chamber.

4. The tubular acidification and cooling kiln according to claim 3, characterized in that: The cold water chamber is an annular structure, the return water chamber is an annular structure, the cold water chamber is located inside the return water chamber, and a heat insulation layer is arranged between the return water chamber and the cold water chamber.

5. The tubular acidification and cooling kiln according to claim 1, characterized in that: The water inlet pipe and the water return pipe in each water cooling unit are arranged side by side, and a plurality of water cooling units are arranged in a circular array inside the kiln body.

6. The tubular acidification and cooling kiln according to claim 5, characterized in that: The water cooling unit comprises three water inlet pipes and one water return pipe, wherein the water return pipe is located outside the three water inlet pipes, and the diameters of the water inlet pipes and the water return pipe in the water cooling unit gradually increase from the inside to the outside.

7. The tubular acidification and cooling kiln according to claim 1, characterized in that: A plurality of support rings are sleeved on the kiln body and arranged at intervals on the kiln body. The support device includes a support platform on which a plurality of supporting wheels are rotatably mounted. Both left and right sides of the lower part of the support ring are in contact with the supporting wheels. The height of the kiln body discharge end is lower than that of the kiln body feed end.

8. The tubular acidification and cooling kiln according to claim 7, characterized in that: It also includes a driving device, which includes an outer gear ring, a gear and a motor. The outer gear ring is sleeved on the kiln body and fixedly connected to the kiln body. The gear is rotatably installed on the support platform, the gear is meshed with the outer gear ring, the motor is fixedly installed on the support platform, and the motor is connected to the gear in a transmission manner. The feeding device is a spiral feeding device, and the discharge port of the spiral feeding device is connected to the feed port of the kiln body.

9. The tubular acidification and cooling kiln according to claim 4, characterized in that: There are more than 4 first shunt tubes, and a plurality of first shunt tubes are arranged in a circular array on the outside of the outer tube; there are more than 4 second shunt tubes, and a plurality of second shunt tubes are arranged in a circular array on the outside of the inner tube.

10. The tubular acidification and cooling kiln according to claim 1, characterized in that: Several heat exchange tube supports are fixedly installed in the kiln body. The heat exchange tube supports are provided with U-shaped grooves. The heat exchange tubes are located in the U-shaped grooves. Fixed plates are installed on the U-shaped grooves. The heat exchange tubes and fixed plates are staggered along the direction of the U-shaped grooves. The shapes of both sides of the fixed plates are adaptively matched with the outer walls of the heat exchange tubes.

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