Grate cooler capable of adjusting air supply in partition mode

Abstract

The utility model relates to a grate cooler capable of adjusting air supply in a partitioned mode, which comprises a shell, a fixed grate plate assembly, a movable grate plate, an air supply device and a controller, the fixed grate plate assembly comprises a plurality of fixed grate plates which are arranged in a step shape, and a plurality of first flow meters are arranged on one side of the fixed grate plate assembly. A plurality of second flow meters are arranged on the other side of the fixed grid plate assembly, the first flow meters are arranged between every two adjacent fixed grid plates, and the second flow meters are arranged between every two adjacent fixed grid plates; the air supply device is provided with a first air outlet and a second air outlet, the first air outlet is located below one side of the fixed grid plate assembly, the second air outlet is located below the other side of the fixed grid plate assembly, the first air outlet is provided with a first flow valve, and the second air outlet is provided with a second flow valve. Fine materials can be fully cooled by cooling air, the situation that the overall cooling quality of the materials is affected due to the fact that the local temperature is too high is avoided, and the fixed grid plate is prevented from being burnt out.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grate cooler, concretely is a grate cooler of zoning regulation air supply. BACKGROUND

[0002] In the process of extracting lithium from spodumene, the spodumene needs to be first put into a rotary kiln for high-temperature roasting, so that the naturally existing and chemically inert alpha spodumene is transformed into beta spodumene that can react with acid and alkali, and then the beta spodumene reacts with sulfuric acid in the subsequent process to generate soluble lithium sulfate.

[0003] The spodumene calcine transformed from the rotary kiln has a high temperature and needs to be put into a grate cooler for cooling. However, it is found in actual production that, since the rotary kiln is in a rotating state when it is working, the spodumene calcine will be affected by centrifugal force, gravity and inertia when it leaves the rotary kiln. The large-diameter calcine will be thrown to a position far below the rotary kiln due to a large force, and the small-diameter calcine will fall to a position close to the rotary kiln. The gap between the large-diameter coarse materials is large, so the cooling air can easily pass through to cool the coarse materials. The gap between the small-diameter fine materials is small, so the cooling air is difficult to pass through. As more and more fine materials fall, the air permeability of the grate plate at this position becomes worse and worse. Therefore, the accumulation of fine materials at this position makes the temperature at this position high and difficult to cool, which affects the overall cooling quality of the calcine. When the temperature is too high, the grate plate at this position may even be burned out. SUMMARY

[0004] In order to solve the technical problems of poor material cooling quality or burning of the grate plate caused by poor air permeability of the fine material in the grate cooler in the prior art, the utility model provides a grate cooler capable of zoning regulation of air supply, and the specific solutions are as follows:

[0005] It comprises a shell, a fixed grate plate assembly, a movable grate plate, an air supply device and a controller. The fixed grate plate assembly, the movable grate plate and the air supply device are all installed in the shell. The fixed grate plate assembly comprises a plurality of fixed grate plates, and the plurality of fixed grate plates are arranged in a stepped manner. A plurality of first flow meters are arranged on one side of the fixed grate plate assembly, and a plurality of second flow meters are arranged on the other side of the fixed grate plate assembly. The first flow meters are arranged between adjacent two fixed grate plates, and the second flow meters are arranged between adjacent two fixed grate plates. The air supply device is provided with a first air outlet and a second air outlet. The first air outlet is located below one side of the fixed grate plate assembly, and the second air outlet is located below the other side of the fixed grate plate assembly. A first flow valve is arranged on the first air outlet, and a second flow valve is arranged on the second air outlet. The first flow meters, the second flow meters, the first flow valve and the second flow valve are all electrically connected with the controller.

[0006] Further, the air supply device comprises a fan and a flow dividing joint, an air inlet on the flow dividing joint is connected with an air outlet on the fan, and the first air outlet and the second air outlet are arranged on the flow dividing joint.

[0007] Further, a third flow meter is arranged at the middle part of the fixed grate assembly, the third flow meter is arranged between two adjacent fixed grates, a third air outlet is further arranged on the flow dividing joint, the third air outlet is arranged below the middle part of the fixed grate assembly, and a third flow valve is arranged on the third air outlet.

[0008] Further, a total air chamber is arranged below the fixed grate assembly, two partitions are arranged in the total air chamber, the two partitions divide the total air chamber into a first air chamber, a second air chamber and a third air chamber, the first air outlet is connected with the first air chamber, the second air outlet is connected with the second air chamber, the third air outlet is connected with the third air chamber, the first flow meter is arranged directly above the first air chamber, the second flow meter is arranged directly above the second air chamber, and the third flow meter is arranged directly above the third air chamber.

[0009] Further, a feeding port is arranged on the shell, the fixed grate assembly is fixedly arranged below the feeding port, the fixed grate assembly further comprises a grate support, the grate support comprises a support beam, one end of the support beam close to the feeding port is higher than the other end of the support beam, and the fixed grate is fixedly arranged on the support beam.

[0010] Further, the fan is a centrifugal fan, and the centrifugal fan is electrically connected with the controller.

[0011] Further, a flow pipe is arranged between two adjacent fixed grates, the first flow meter is arranged in the flow pipe, and the second flow meter is arranged in the flow pipe.

[0012] Further, a flow pipe is arranged between two adjacent fixed grates, and the third flow meter is arranged in the flow pipe.

[0013] Further, the flow pipe is a heat insulation pipe.

[0014] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0015] The utility model discloses a kind of zoning regulation air supply's grate cooler, first flowmeter and second flowmeter are equipped on its fixed grate plate assembly, first flowmeter is correspondingly provided with first air outlet, first flow valve below, second flowmeter is correspondingly provided with second air outlet, second flow valve below, first flowmeter and second flowmeter are used to detect the air volume of current position when working.The data range of first flowmeter and second flowmeter under normal working condition without fine material accumulation is preset value, real-time data and preset value are compared in real time when working to judge current baking material accumulation, cooling condition.If real-time data falls within preset data range, it indicates that grate cooler works normally, and air supply is normally supplied according to preset flow rate;If real-time data does not fall in preset data range, it indicates that air volume (distribution) cannot meet the needs of current baking material accumulation state cooling, then by controlling first flow valve, second flow valve and fan power, adjust the air volume of each zone of fixed grate plate assembly so that each flowmeter data falls back to normal working range.

[0016] Grate cooler dynamically adjusts the air volume of each zone of fixed grate plate assembly according to the material falling condition on fixed grate plate assembly, which ensures that fine material can be fully and uniformly cooled by cooling air, avoids the problem of local temperature being too high due to fine material accumulation, which affects the overall cooling quality of material and damages fixed grate plate of high-temperature material pile;Compared with the material cooling mode of continuous large air volume, dynamically adjusting air volume feedback is timely and more energy-saving and environment-friendly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure diagram of the utility model discloses zoning regulation air supply's grate cooler;

[0018] Figure 2 It is Figure 1 It is the structure diagram of fixed grate plate assembly and air supply device under the visual angle of middle A;

[0019] Figure 3 It is the control block diagram of the utility model's zoning regulation air supply's grate cooler.

[0020] Wherein: 1-inlet; 2-support beam; 3-grate support; 4-total air chamber; 5-fixed grate plate assembly; 6-fixed grate plate; 7-housing; 8-movable grate plate; 9-first flowmeter; 10-first air chamber; 11-third air chamber; 12-second air chamber; 13-shunt connector; 131-second air outlet; 132-first air outlet; 133-third air outlet; 14 second flow valve; 15-third flow valve, 16-first flow valve; 17-fan; 18-heat insulation pipe; 19-baffle; 20-second flowmeter; 21-third flowmeter; 22-rotary kiln. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model embodiments will be further described below in combination with the drawings. The following describes a relatively preferred one of the plurality of possible embodiments of the utility model, which is intended to provide a basic understanding of the utility model, but is not intended to identify the key or decisive elements of the utility model or limit the scope of protection.

[0022] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] The utility model will be further described in detail below in combination with the drawings and in combination with specific embodiments, but the embodiments of the utility model are not limited to this.

[0024] Please refer to Figures 1-3 , the embodiment is a grate cooler that can be adjusted by partitioning, comprising a shell 7, a fixed grate plate assembly 8, a movable grate plate 5, a air supply device and a controller (not shown in the figure). The fixed grate plate assembly 5, the movable grate plate 8 and the air supply device are all installed in the shell 7, the fixed grate plate assembly 5 comprises a plurality of fixed grate plates 6, the plurality of fixed grate plates 6 are arranged in a stepped manner, a plurality of first flow meters 20 are arranged on one side of the fixed grate plate assembly 5, a plurality of second flow meters 9 are arranged on the other side of the fixed grate plate assembly 5, the first flow meter 20 is arranged between adjacent two fixed grate plates 6, and the second flow meter 9 is arranged between adjacent two fixed grate plates 6; the air supply device is provided with a first air outlet 132 and a second air outlet 131, the first air outlet 132 is located below one side of the fixed grate plate assembly, the second air outlet 131 is located below the other side of the fixed grate plate assembly, a first flow valve 14 is arranged on the first air outlet, a second flow valve 16 is arranged on the second air outlet, and the first flow meter 9, the second flow meter 20, the first flow valve 16 and the second flow valve 14 are all electrically connected with the controller.

[0025] More specifically, the air supply device of the embodiment comprises a fan 17 and a flow divider 13, the air inlet on the flow divider 13 is connected with the air outlet on the fan, and the first air outlet 132 and the second air outlet 131 are arranged on the flow divider 13.

[0026] More specifically, the middle part of the fixed grate assembly is provided with a third flow meter 21, the third flow meter 21 is arranged between two adjacent fixed grates 6, and the shunt joint 13 is also provided with a third air outlet 133, the third air outlet is located below the middle part of the fixed grate assembly, and the third air outlet is provided with a third flow valve 21.

[0027] More specifically, the lower part of the fixed grate assembly is provided with a total air chamber 4, two partitions 19 are arranged in the total air chamber 4, and the total air chamber 4 is divided into a first air chamber 10, a second air chamber 12 and a third air chamber 11, the first air outlet 132 is connected to the first air chamber 10, the second air outlet 131 is connected to the second air chamber 12, and the third air outlet 133 is connected to the third air chamber 11, the first flow meter 9 is located directly above the first air chamber 10, the second flow meter 20 is located directly above the second air chamber 12, and the third flow meter 21 is located directly above the third air chamber 11.

[0028] More specifically, the shell is provided with a feed inlet 1, the fixed grate assembly 5 is fixedly installed below the feed inlet 1, and the fixed grate assembly 5 further includes a grate support 3, the grate support includes a support beam 2, one end of the support beam 2 near the feed inlet 1 is higher than the other end of the support beam, and the fixed grate 6 is fixedly installed on the support beam 2.

[0029] More specifically, the fan 17 is a centrifugal fan, and the centrifugal fan is electrically connected to the controller.

[0030] More specifically, a flow pipe 18 is arranged between two adjacent fixed grates 6, the first flow meter is installed in the flow pipe 18, the second flow meter is installed in the flow pipe 18, and the third flow meter is installed in the flow pipe 18. The flow pipe 18 is a heat insulation pipe, which provides a certain protection for the flow meters and also provides an air flow channel to facilitate the first flow meter, the second flow meter and the third flow meter to collect data.

[0031] The embodiment can also be provided with an input device such as a keyboard electrically connected to the controller, and a display device such as a display electrically connected to the controller, the controller can detect the amount of air passing through the fixed grate through the first flow meter, the second flow meter and the third flow meter as a whole, and display it on the display, and also can enter instructions through the keyboard for adjusting the air volume or presetting data.

[0032] The feeding port of the rotary kiln 22 falls downward into the feeding port 1 of the grate cooler, and when the material falls from the rotary kiln 22 in rotation, the coarse material with a large particle size is thrown onto the fixed grate plate above the second air chamber 12 far away from the rotary kiln, and the fine material with a small particle size falls onto the fixed grate plate above the first air chamber 10, and the fixed grate plate above the third air chamber 11 is a transition area; when the fine material accumulates on the fixed grate plate 6, the cooling air flow from the first air chamber 10 is blocked, the first flow meter 9 detects that the air volume becomes small, and sends a signal to the controller, the controller controls the first flow valve 16, the second flow valve 14, the third flow valve 15 or the centrifugal fan 17 below the grate plate of the fine material to increase the air volume of the first air outlet 132 below the grate plate of the fine material, so that the fine material can be sufficiently cooled by the cooling air, avoiding the local temperature being too high to affect the overall cooling quality of the material, and avoiding the fixed grate plate from being burned out.

[0033] During the operation of the grate cooler, the controller detects the air volume at the first flow meter 9, the second flow meter 20 and the third flow meter 21 in real time, and can preset a corresponding flow value range for the first flow meter 9, the second flow meter 20 and the third flow meter 21, respectively, which is the data detected by each flow meter under the condition that the fine material is not accumulated and the ventilation is good, and the controller adjusts each flow valve and the fan 17 to ensure that the values of the first flow meter 9, the second flow meter 20 and the third flow meter 21 are within the corresponding ranges, so as to ensure the cooling quality of the material. When the fine material starts to accumulate and the ventilation becomes poor, the value of each first flow meter 9 is less than the preset flow value range, the controller controls the opening of the first flow valve 132 to be increased, or the output power of the fan 17 is increased, so that the air volume of the first air chamber 10 is increased, and the fine material is cooled by the air with a larger flow. The grate cooler related to the present application can automatically adjust the air volume dynamically according to the feeding condition, and compared with the material cooling mode of keeping a large air volume all the time, the embodiment saves energy and is green and environment-friendly.

[0034] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grate cooler with zonal regulation of the supply air, characterized in that: The utility model provides a kind of fixed grate assembly and air supply device, including shell (7), fixed grate assembly (5), movable grate (8), air supply device and controller;The fixed grate assembly (5), movable grate (8) and air supply device are all installed in shell (7);The fixed grate assembly (5) includes several fixed grates (6), several fixed grates (6) are arranged in echelon, and the fixed grate assembly (5) one side is provided with several first flow meters (9), and the fixed grate assembly (5) other side is equipped with several second flow meters (20), and first flow meter (9) is arranged between adjacent two fixed grates (6), and second flow meter (20) is arranged between adjacent two fixed grates (6);The air supply device is equipped with first air outlet (132) and second air outlet (131), and first air outlet (132) is located below the one side of fixed grate assembly (5), and second air outlet (131) is located below the other side of fixed grate assembly (5), and first air outlet (132) is equipped with first flow valve (16), and second air outlet (131) is equipped with second flow valve (14), and first flow meter, second flow meter, first flow valve and second flow valve are electrically connected with controller.

2. The zoneable air supply regulated grate cooler according to claim 1, characterized in that: The air supply device includes fan and shunt joint (13), and the air inlet of the shunt joint (13) is connected with the air outlet of the fan, and the first air outlet (132) and the second air outlet (131) are arranged on the shunt joint.

3. The zone-regulatable air supply grate cooler according to claim 2, characterized in that The middle of the fixed grate assembly (5) is provided with a third flow meter (21), and the third flow meter (21) is arranged between adjacent two fixed grates (6), and the shunt joint is further provided with a third air outlet (133), and the third air outlet (133) is located below the middle of the fixed grate assembly (5), and the third air outlet (133) is provided with a third flow valve (15).

4. The zone-regulatable air supply grate cooler according to claim 3, characterized in that The lower side of the fixed grate assembly is provided with a total air chamber (4), and the total air chamber (4) is provided with two partitions (19), and the two partitions (19) divide the total air chamber (4) into a first air chamber (10), a second air chamber (12) and a third air chamber (11), the first air outlet (132) is connected with the first air chamber (10), the second air outlet (131) is connected with the second air chamber (12), the third air outlet (133) is connected with the third air chamber (11), the first flow meter (9) is located directly above the first air chamber (10), the second flow meter (20) is located directly above the second air chamber (12), and the third flow meter (21) is located directly above the third air chamber (11).

5. The zonally regulated air supplied grate cooler of claim 1, wherein: The shell (7) is provided with a feeding port (1), and the fixed grate assembly is fixedly installed below the feeding port (1). The fixed grate assembly (5) further includes a grate support (3), and the grate support (3) includes a support beam (2), one end of the support beam (2) near the feeding port (1) is higher than the other end of the support beam (2), and the fixed grate (6) is fixedly installed on the support beam (2).

6. The zone-regulatable air supply grate cooler according to claim 2, characterized in that The fan is a centrifugal fan, and the centrifugal fan is electrically connected with the controller.

7. A grate cooler with zonal regulation of the supply air according to claim 1, characterized in that: Flow pipes are arranged between adjacent two fixed grates, the first flow meter is installed in the flow pipe, and the second flow meter is installed in the flow pipe.

8. A grate cooler with zoned air supply as claimed in claim 3 wherein: Flow pipes are arranged between adjacent two fixed grates, and the third flow meter is installed in the flow pipe.

9. A grate cooler with zoned air supply according to claim 7 or 8, characterized in that: The flow tube is a thermally insulated tube.

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