Dry-process circulating deslagging device and rotary kiln with same

Abstract

The utility model discloses a dry method circulation deslagging device and a rotary kiln with the dry method circulation deslagging device, the dry method circulation deslagging device comprises an ash slag transfer box, a first-stage gate valve, a second-stage gate valve and ash removing equipment, the ash slag transfer box is arranged at the downstream of a deslagging port of the rotary kiln, the ash slag transfer box comprises an ash slag inlet and an ash slag outlet, the ash slag inlet is used for being communicated with the deslagging port, and the ash slag outlet is used for being communicated with the first-stage gate valve. The ash outlet is used for discharging ash, the first-stage gate valve is arranged between the slag discharging port and the ash inlet, the second-stage gate valve is arranged at the ash outlet, and the first-stage gate valve and the second-stage gate valve are alternately opened to discharge the ash generated by combustion of the rotary kiln. According to the utility model, the deformation of the inclined chute of the rotary kiln caused by excessive accumulation of high-temperature ash is effectively prevented. And ash in the ash transfer box is removed by adopting the ash removal device. The first-stage gate valve and the second-stage gate valve can be opened alternately, so that in the deslagging process, the situation that external air and gas in the rotary kiln are mutually exchanged is avoided, and it is guaranteed that normal and stable combustion of the rotary kiln and the secondary combustion chamber is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln solid waste treatment, in particular to a dry-process circulating slag discharging device and a rotary kiln with the same. Background Art

[0002] The dry slag discharge equipment in the related art has the following problems in actual use: 1. The lower part of the slag discharge pipe is easy to deform. When too much high-temperature ash accumulates at the inclined chute at the bottom of the kiln tail cover, heat accumulates, which easily causes the inclined chute to deform. The related art uses high-temperature resistant materials or installs a circulating water cooling jacket to solve the deformation problem, which is costly and difficult; 2. Serious fly ash pollution. The amount of fly ash is large, and the ash discharge process will seriously pollute the working environment and cause harm to the health of the staff; 3. Air leakage problem. The slag discharge equipment in the related art is usually equipped with a gate valve. When the gate valve is opened during slag discharge, an air leakage port open to the outside will be formed. The air leakage will cause the air volume and pressure in the rotary kiln and the secondary combustion chamber to fluctuate, affecting the normal and stable combustion, thereby adversely affecting the entire incineration system. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides a dry circulating slag discharging device.

[0004] The embodiment of the utility model further provides a rotary kiln.

[0005] The dry cycle slag discharge device of the utility model embodiment comprises: an ash transfer box, the ash transfer box is arranged downstream of the slag discharge port of the rotary kiln, the ash transfer box has an ash cooling chamber and an ash inlet and an ash outlet connected to the ash cooling chamber, the ash inlet is used to communicate with the slag discharge port, and the ash outlet is used to discharge ash; a primary gate valve, the primary gate valve is arranged between the slag discharge port and the ash inlet, the primary gate valve has an open state and a closed state, when the primary gate valve is in the open state, the slag discharge port is connected to the ash inlet, When the primary gate valve is in a closed state, the slag discharge port is separated from the ash inlet; a secondary gate valve, the secondary gate valve is arranged at the ash outlet, the secondary gate valve has an open state and a closed state, the secondary gate valve is in an open state to discharge the ash in the ash transfer box, and the secondary gate valve is in a closed state to store the ash in the ash transfer box, the primary gate valve and the secondary gate valve are opened alternately to discharge the ash generated by the combustion of the rotary kiln; an ash removal device, the ash removal device is arranged in the ash cooling chamber for ash removal.

[0006] The dry cycle slag discharge device provided by the embodiment of the utility model is provided with an ash transfer box at the slag discharge port of the rotary kiln, and an intermittent slag discharge is provided to intermittently discharge the high-temperature ash at the slag discharge port of the rotary kiln, effectively preventing the deformation of the inclined chute of the rotary kiln caused by excessive accumulation of high-temperature ash. The ash removal device is used to remove the ash in the ash transfer box, and the fly ash can be removed cleanly, so that the ash outlet of the ash transfer box can be open for slag discharge without the need to use other sealing devices, the structure is simpler, and the equipment cost is lower. A first-level gate valve and a second-level gate valve are used, and the two-way gate valve structure, the first-level gate valve and the second-level gate valve can be opened alternately, so that during the slag discharge process, there will be no exchange between the outside air and the gas in the rotary kiln, so that the pressure and combustion components in the rotary kiln will not fluctuate, and the rotary kiln and the secondary combustion chamber can be guaranteed to maintain normal and stable combustion.

[0007] In some embodiments, an inclined chute is connected to the slag discharge port of the rotary kiln, and the extension direction of the inclined chute forms an angle with the vertical direction. The inclined chute has a top inlet and a bottom outlet. The top inlet is connected to the slag discharge port, and the bottom outlet faces sideways. The ash inlet of the ash transfer box is located on the side of the box body, and the ash outlet is located at the bottom of the box body. The ash transfer box is connected to the inclined chute, and the ash inlet and the bottom outlet of the inclined chute are opposite to each other in the horizontal direction. The first-level gate valve is arranged between the ash inlet and the bottom outlet of the inclined chute.

[0008] In some embodiments, the dry cycle slag discharge device further includes a slag receiving barrel, which is disposed below the ash transfer box and is vertically opposite to the ash outlet of the ash transfer box.

[0009] In some embodiments, the dry cycle slag discharge device also includes a weight monitoring device, which is arranged at the bottom of the slag receiving barrel and is used to monitor the weight of the ash in the slag receiving barrel; or, the dry cycle slag discharge device also includes a level monitor, which is arranged in the slag receiving barrel and is used to monitor the level of the ash in the slag receiving barrel.

[0010] In some embodiments, the ash transfer box is a square box structure, the ash transfer box has a side surface and a bottom surface, the ash inlet is arranged on the side surface of the ash transfer box, and the ash outlet is arranged on the bottom surface of the ash transfer box.

[0011] In some embodiments, the dust removal equipment is a water mist dust removal equipment, and the water mist dust removal equipment includes a plurality of water mist nozzles, and the plurality of water mist nozzles are arranged at the top of the ash cooling chamber to spray water mist into the ash cooling chamber.

[0012] In some embodiments, the dry cycle slag discharge device further includes a first cooling component, which is disposed on the inner wall surface or the outer wall surface of the ash transfer box and is used to cool the ash in the ash cooling chamber.

[0013] In some embodiments, the dry cycle slag discharge device also includes a second cooling component, which is arranged on the side of the secondary gate valve facing the ash cooling chamber, or the second cooling component is arranged on the side of the secondary gate valve away from the ash cooling chamber, and the second cooling component is used to cool the ash in the ash cooling chamber.

[0014] In some embodiments, the dry cycle slag discharge device includes: a first driving member, the first driving member acts on the first-level gate valve, and is used to drive the first-level gate valve to switch between an open state and a closed state; a second driving member, the second driving member acts on the second-level gate valve, and is used to drive the second-level gate valve to switch between an open state and a closed state; an electrical control unit, the electrical control unit is electrically connected to the first driving member and the second driving member, and is used to control the start and stop of the first driving member and the second driving member.

[0015] Another aspect of the present invention provides a rotary kiln, comprising: a kiln, wherein the kiln has a furnace chamber for combustion and a kiln tail hood connected to the furnace chamber, and a slag discharge port is provided at the bottom of the kiln tail hood; an inclined chute, wherein the extension direction of the inclined chute forms an angle with the vertical direction, the inclined chute has a top inlet and a bottom outlet, and the top inlet of the inclined chute is connected to the slag discharge port; a dry circulation slag discharge device, wherein the bottom outlet of the inclined chute is connected to the ash inlet of the ash transfer box, and the first-level gate valve is arranged between the ash inlet and the bottom outlet of the inclined chute. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the dry cycle slag discharging device provided in an embodiment of the utility model.

[0017] Figure 2 It is a side view of a dry circulating slag discharging device provided in an embodiment of the utility model.

[0018] Reference numerals:

[0019] Rotary kiln 10, slag discharge port 101, inclined chute 102, kiln furnace 103, kiln tail cover 104, ash transfer box 1, ash cooling chamber 11, ash inlet 12, ash outlet 13, primary gate valve 2, secondary gate valve 3, slag receiving barrel 4, water mist nozzle 5, and electrical control unit 6. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0021] According to the following Figure 1-Figure 2 The dry-process circulating slag discharging device provided in the embodiment of the utility model and the rotary kiln 10 having the dry-process circulating slag discharging device are described.

[0022] The dry cycle slag discharge device comprises an ash transfer box 1, a primary gate valve 2, a secondary gate valve 3 and an ash removal device. The ash transfer box 1 is arranged downstream of the slag discharge port 101 of the rotary kiln 10. The ash transfer box 1 has an ash cooling chamber 11, and an ash inlet 12 and an ash outlet 13 connected to the ash cooling chamber 11. The ash inlet 12 is used to communicate with the slag discharge port 101 of the rotary kiln 10. The ash generated by combustion in the rotary kiln 10 can enter the ash cooling chamber 11 in the ash transfer box 1 through the slag discharge port 101 and the ash inlet 12. The ash outlet 13 is used to discharge the ash in the ash cooling chamber 11.

[0023] The primary gate valve 2 is disposed between the slag discharge port 101 of the rotary kiln 10 and the ash inlet 12 of the ash transfer box 1. The primary gate valve 2 has an open state and a closed state. When the primary gate valve 2 is in the open state, the slag discharge port 101 is connected to the ash inlet 12. When the primary gate valve 2 is in the closed state, the slag discharge port 101 is separated from the ash inlet 12. It can be understood that when the primary gate valve 2 is closed, the ash at the slag discharge port 101 is stopped by the primary gate valve 2 and cannot enter the ash cooling chamber 11.

[0024] The secondary gate valve 3 is provided at the ash outlet 13 in the ash transfer box 1. The secondary gate valve 3 has an open state and a closed state. The secondary gate valve 3 is in the open state to discharge the ash in the ash transfer box 1, and the secondary gate valve 3 is in the closed state to store the ash in the ash transfer box 1. That is, when the secondary gate valve 3 is closed, the ash in the ash transfer box 1 is stopped by the secondary gate valve 3 and cannot be discharged.

[0025] The primary gate valve 2 and the secondary gate valve 3 are opened alternately to discharge the ash produced by the combustion of the rotary kiln 10. That is, at a certain moment, only one of the primary gate valve 2 and the secondary gate valve 3 is opened at most. In other words, the primary gate valve 2 and the secondary gate valve 3 are not in the open state at the same time, so as to avoid the inner cavity of the rotary kiln 10 being directly connected to the external environment, causing air leakage.

[0026] The ash removal equipment is arranged in the ash cooling chamber 11 for removing the ash in the ash cooling chamber 11 .

[0027] Below Figure 1 and Figure 2 Taking the dry cycle slag discharging device provided by the embodiment of the utility model as an example, the preferred operation process is described. It should be noted that the dry cycle slag discharging device provided by the embodiment of the utility model is not limited to the following operation process.

[0028] When the slag discharge operation starts, the rotary kiln 10 is in a normal burning operation state. At this time, the first-level gate valve 2 and the second-level gate valve 3 are both set to be in a closed state, and the ash removal device is in a closed state;

[0029] The rotary kiln 10 is incinerated for a preset time. During this process, a certain amount of high-temperature ash is accumulated at the slag discharge port 101 of the rotary kiln 10. At this time, the primary gate valve 2 is opened, and the secondary gate valve 3 is kept in a closed state. The slag discharge port 101 is connected with the ash inlet 12, and the accumulated ash enters the ash cooling chamber 11 of the ash transfer box 1 through the ash inlet 12, and is accumulated in the ash cooling chamber 11 under the stopper effect of the secondary gate valve 3;

[0030] After the first-stage gate valve 2 is opened for a preset time, it is closed again to allow the fly ash to settle naturally in the ash cooling chamber 11;

[0031] After a preset time, the ash removal device is turned on to remove ash from the interior of the ash cooling chamber 11;

[0032] After the preset time, the ash removal device is turned off, and the ash is cooled in the ash cooling chamber 11;

[0033] After the preset time, the secondary gate valve 3 is opened, the primary gate valve 2 is kept in a closed state, and the ash in the ash cooling chamber 11 is discharged through the ash outlet 13;

[0034] After the slag discharge is completed, close the secondary gate valve 3 to complete the entire slag discharge process.

[0035] The dry cycle slag discharge device provided by the embodiment of the utility model is provided with an ash transfer box at the slag discharge port of the rotary kiln, and an intermittent slag discharge is provided to intermittently discharge the high-temperature ash at the slag discharge port of the rotary kiln, effectively preventing the deformation of the inclined chute of the rotary kiln caused by excessive accumulation of high-temperature ash. The ash removal device is used to remove the ash in the ash transfer box, and the fly ash can be removed cleanly, so that the ash outlet of the ash transfer box can be open for slag discharge without the need to use other sealing devices, the structure is simpler, and the equipment cost is lower. A first-level gate valve and a second-level gate valve are used, and the two-way gate valve structure, the first-level gate valve and the second-level gate valve can be opened alternately, so that during the slag discharge process, there will be no exchange between the outside air and the gas in the rotary kiln, so that the pressure and combustion components in the rotary kiln will not fluctuate, and the rotary kiln and the secondary combustion chamber can be guaranteed to maintain normal and stable combustion.

[0036] In some embodiments, Figure 1As shown, the slag discharge port 101 of the rotary kiln 10 is connected to an inclined chute 102, the extension direction of the inclined chute 102 is at an angle to the vertical direction, the inclined chute 101 has a top inlet and a bottom outlet, the top inlet of the inclined chute 101 is connected to the slag discharge port 101 of the rotary kiln 10, the bottom outlet of the inclined chute 101 faces the side, the ash inlet 12 of the ash transfer box 1 is located on the side of the box, and the ash outlet 13 is located at the bottom of the box. Figure 1 As shown, the ash transfer box 1 is connected to the inclined chute 102, and the ash inlet 12 is opposite to the bottom outlet of the inclined chute 102 in the horizontal direction. The first-level gate valve 2 is arranged between the ash inlet 12 and the bottom outlet of the inclined chute 102, and is used to connect or cut off the ash cooling chamber 11 and the inclined chute 102.

[0037] During the actual operation of the rotary kiln 10, the ash produced by its combustion will enter the inclined chute 102 through the slag discharge port 101 for accumulation. After a certain period of accumulation, the ash will enter the ash transfer box 1 through the opened primary gate valve 2 for ash removal and cooling. It can be understood that since the inclined chute 102 is inclined, the ash accumulated in the inclined chute 102 can slide into the ash transfer box 1 under the action of gravity without the need for other transportation equipment. In addition, the ash outlet 13 is located at the bottom of the ash transfer box 1. After the ash enters the ash transfer box 1 through the ash inlet 12, it automatically falls onto the secondary gate valve 3 under the action of gravity, so that when the secondary gate valve 3 is opened, the ash can be discharged smoothly through the ash outlet 13.

[0038] Furthermore, in order to facilitate the disposal of ash, Figure 1 As shown, the dry cycle slag discharge device also includes a slag receiving barrel 4, which is arranged below the ash transfer box 1 and is opposite to the ash outlet 13 of the ash transfer box 1 in the vertical direction. When the secondary gate valve 3 is opened, the ash in the ash transfer box 1 falls downward into the slag receiving barrel 4 under the action of gravity. The slag receiving barrel 4 is used to receive the ash discharged from the ash transfer box 1. The secondary gate valve 3 is opened several times for several slag discharges. After the slag receiving barrel 4 is full of ash, the slag receiving barrel 4 is directly transferred to the designated slag bin for disposal by a forklift.

[0039] Furthermore, in order to improve the automation level of the dry cycle slag discharge device, an alarm prompt or the like is used to promptly remind the staff that the ash slag in the slag receiving barrel 4 is full and to transfer the slag in time.

[0040] In some optional embodiments, the dry cycle slag discharge device further includes a weight monitoring device (not shown in the figure), which is disposed at the bottom of the slag barrel 4 and is used to monitor the weight of the ash in the slag barrel 4. Specifically, a maximum weight value of the slag barrel 4 is set, and when the weight monitoring device monitors that the overall weight of the slag barrel 4 exceeds the set maximum weight value, an alarm message is issued to alert the staff. Optionally, the weight detection device is an engineering weighing device, and the slag barrel 4 is placed on the weighing device. The empty slag barrel 4 is weighed first, so that the weight of the ash in the slag barrel 4 can be calculated based on the dead weight of the slag barrel 4.

[0041] In some optional embodiments, the dry cycle slag discharge device further includes a material level monitor (not shown in the figure), which is arranged in the slag receiving barrel 4 and is used to monitor the material level of the ash slag in the slag receiving barrel 4. Specifically, a maximum material level of the slag receiving barrel 4 is set, and when the material level detector detects that the ash slag material level in the slag receiving barrel 4 reaches or exceeds the set maximum material level, an alarm message is issued to remind the staff. Optionally, the material level monitor is an infrared material level detector or a laser material level detector.

[0042] In some specific embodiments, Figure 1 As shown, the ash transfer box 1 is a square box structure, the ash transfer box 1 has a side surface and a bottom surface, the ash inlet 12 is arranged on the side surface of the ash transfer box 1, and the ash outlet 13 is arranged on the bottom surface of the ash transfer box 1. The direction of the ash inlet 12 and the direction of the ash outlet 13 are perpendicular to each other, and the first-level gate valve 2 and the second-level gate valve 3 are also perpendicular to each other. The ash entering the ash transfer box 1 from the ash inlet 12 automatically falls on the upper surface of the second-level gate valve 3.

[0043] In some embodiments, Figure 1 As shown, the dust removal equipment is a water mist dust removal equipment, which includes a plurality of water mist nozzles 5 , which are arranged at the top of the ash cooling chamber 11 and are used to spray water mist into the ash cooling chamber 11 .

[0044] As an example, when the ash in the ash cooling chamber 11 is removed, the water mist nozzle 5 is turned on to spray water mist, which is provided by steam or generated by cold water atomization, to completely remove the fly ash. Therefore, the ash transfer box 1 and the slag receiving barrel 4 can be opened for slag dropping, eliminating the sealing structure and making forklift operation more convenient.

[0045] In addition, compared with the wet slag discharge method, the dry slag discharge method uses water mist to remove ash in about 1-2 seconds, which consumes very little water. It can not only effectively remove ash, but also ensure that the ash is in a dry state (moisture content <15%). Overall, it is still a dry slag discharge method, which is conducive to subsequent ash disposal.

[0046] In some embodiments, the dry cycle slag discharge device also includes a first cooling component (not shown in the figure), which is arranged on the inner wall or outer wall of the ash transfer box 1, and is used to cool the ash in the ash cooling chamber 11, accelerate the cooling of the ash, and avoid construction risks to construction personnel during the discharge of high-temperature ash. At the same time, it prevents the ash transfer box 1 and the slag receiving barrel 4 from working in a high-temperature environment for a long time, causing high-temperature corrosion and shortening the service life.

[0047] Optionally, the first cooling component is a cooling water jacket through which cooling water flows.

[0048] Furthermore, in some embodiments, the dry cycle slag discharge device also includes a second cooling component (not shown in the figure), which is arranged on the side of the secondary gate valve 3 facing the ash cooling chamber 11, or the second cooling component is arranged on the side of the secondary gate valve 3 away from the ash cooling chamber 11. The second cooling component is used to cool the ash in the ash cooling chamber 11, accelerate the cooling of the ash, and avoid construction risks to construction personnel during the discharge of high-temperature ash.

[0049] Optionally, the second cooling component is a cooling water jacket through which cooling water flows.

[0050] In some embodiments, Figure 1 As shown, the dry cycle slag discharge device includes: a first drive member, a second drive member and an electrical control unit 6. The first drive member acts on the primary gate valve 2, and is used to drive the primary gate valve 2 to switch between an open state and a closed state; the second drive member acts on the secondary gate valve 3, and is used to drive the secondary gate valve 3 to switch between an open state and a closed state; the electrical control unit is electrically connected to each of the first drive member and the second drive member, and is used to control the start and stop of the first drive member and the second drive member, so as to control the state switching of the primary gate valve 2 and the secondary gate valve 3.

[0051] In some optional embodiments, the primary gate valve 2 and the secondary gate valve 3 slide along the slide rail to switch between an open state and a closed state, and the first driving member and the second driving member are hydraulic cylinders that drive the primary gate valve 2 and the secondary gate valve 3 to slide. Alternatively, the first driving member and the second driving member may also be electrically or pneumatically driven.

[0052] The present utility model also provides a rotary kiln having the above dry cycle slag discharging device, such as Figure 1 and Figure 2As shown, the rotary kiln 10 includes a kiln 103, an inclined chute 102, and a dry cycle slag discharge device in any of the above embodiments. The kiln 103 has a furnace chamber for combustion and a kiln tail hood 104 connected to the furnace chamber. A slag discharge port 101 is provided at the bottom of the kiln tail hood 104. The extending direction of the inclined chute 102 forms an angle with the vertical direction. The inclined chute 102 has a top inlet and a bottom outlet. The top inlet of the inclined chute 102 is connected to the slag discharge port 101. The bottom outlet of the inclined chute 102 is connected to the ash inlet 12 of the ash transfer box 1. The primary gate valve 2 is provided between the ash inlet 12 of the ash transfer box 1 and the bottom outlet of the inclined chute 102.

[0053] According to the following Figure 1 and Figure 2 The dry cycle slag discharging device and the rotary kiln having the same are shown, and the slag discharging operation process of the rotary kiln is described.

[0054] When the slag discharge operation starts, the rotary kiln is in a normal burning operation state. At this time, the first-level gate valve 2 and the second-level gate valve 3 are both set to be in a closed state, and the water mist ash removal device is also in a closed state;

[0055] Set a suitable rotary kiln incineration operation time. During this time period, a certain amount of high-temperature ash will accumulate in the inclined chute 102 below the slag discharge port 101 of the inner kiln tail cover 104;

[0056] After running for a certain period of time, open the first-level gate valve 2 to discharge the accumulated high-temperature ash, the ash enters the ash transfer box 1, and falls on the second-level gate valve 3, and the first-level gate valve 2 is closed again;

[0057] The fly ash is allowed to settle naturally for 1-2 minutes, and then the water mist nozzle 5 of the water mist ash removal device is turned on to remove the ash for 1-2 seconds;

[0058] The ash is cooled in the ash cooling chamber 11, and the cooling time is set to 3 minutes, and then the secondary gate valve 3 is opened to discharge the ash into the slag receiving barrel 4;

[0059] After the slag discharge is completed, close the secondary gate valve 3 to complete the entire slag discharge process;

[0060] The above slag discharge process is repeated, and when the slag receiving barrel 4 is filled with ash and slag to a certain amount, the slag is directly transported to the designated slag bin for disposal by a forklift.

[0061] The dry circulating slag discharging device provided by the utility model can effectively control the moisture content of ash by adopting water mist ash removal technology, and can reduce the moisture content of ash to the maximum (moisture content <15%), providing good conditions for reducing the cost of ash disposal in the future. The intermittently opened two-stage gate valve not only prevents air leakage from having an adverse effect on the rotary kiln incineration system, but also solves the problem of fly ash polluting the working environment and harming the health of workers.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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 the present invention can be understood according to specific circumstances.

[0065] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A dry cycle slag discharge device, characterized in that: include: An ash transfer box, which is arranged downstream of the slag discharge port of the rotary kiln, and has an ash cooling chamber, and an ash inlet and an ash outlet communicated with the ash cooling chamber, wherein the ash inlet is used to communicate with the slag discharge port, and the ash outlet is used to discharge the ash; A first-level gate valve, the first-level gate valve is arranged between the slag discharge port and the ash inlet, the first-level gate valve has an open state and a closed state, when the first-level gate valve is in the open state, the slag discharge port is connected to the ash inlet, when the first-level gate valve is in the closed state, the slag discharge port and the ash inlet are separated; A secondary gate valve, the secondary gate valve is arranged at the ash outlet, the secondary gate valve has an open state and a closed state, the secondary gate valve is in the open state to discharge the ash in the ash transfer box, the secondary gate valve is in the closed state to store the ash in the ash transfer box, the primary gate valve and the secondary gate valve are opened alternately to discharge the ash generated by the combustion of the rotary kiln; Ash removal equipment, the ash removal equipment is arranged in the ash cooling chamber for ash removal.

2. The dry cycle slag discharge device according to claim 1, characterized in that: The slag discharge port of the rotary kiln is connected with an inclined chute, the extension direction of the inclined chute forms an angle with the vertical direction, the inclined chute has a top inlet and a bottom outlet, the top inlet is connected with the slag discharge port, the bottom outlet faces sideways, the ash inlet of the ash transfer box is located on the side of the box body, the ash outlet is located at the bottom of the box body, the ash transfer box is connected with the inclined chute, and the ash inlet and the bottom outlet of the inclined chute are opposite to each other in the horizontal direction, and the first-level gate valve is arranged between the ash inlet and the bottom outlet of the inclined chute.

3. The dry cycle slag discharge device according to claim 2, characterized in that: It also includes a slag receiving barrel, which is arranged below the ash transfer box and is opposite to the ash outlet of the ash transfer box in the vertical direction.

4. The dry cycle slag discharging device according to claim 3, characterized in that: The dry cycle slag discharge device further comprises a weight monitoring device, which is arranged at the bottom of the slag receiving barrel and is used to monitor the weight of the ash slag in the slag receiving barrel; Alternatively, the dry cycle slag discharging device further comprises a material level monitor, and the material level monitor is arranged in the slag receiving barrel and is used to monitor the material level of ash and slag in the slag receiving barrel.

5. The dry cycle slag discharging device according to claim 2, characterized in that: The ash transfer box is a square box structure, and has a side surface and a bottom surface. The ash inlet is arranged on the side surface of the ash transfer box, and the ash outlet is arranged on the bottom surface of the ash transfer box.

6. The dry cycle slag discharge device according to any one of claims 1 to 5, characterized in that: The ash removal equipment is a water mist ash removal equipment, and the water mist ash removal equipment includes a plurality of water mist nozzles, and the plurality of water mist nozzles are arranged at the top of the ash cooling chamber and are used to spray water mist into the ash cooling chamber.

7. The dry cycle slag discharging device according to claim 1, characterized in that: It also includes a first cooling component, which is arranged on the inner wall surface or the outer wall surface of the ash transfer box and is used to cool the ash in the ash cooling cavity.

8. The dry cycle slag discharging device according to claim 1 or 7, characterized in that: It also includes a second cooling component, which is arranged on the side of the secondary gate valve facing the ash cooling chamber, or the second cooling component is arranged on the side of the secondary gate valve away from the ash cooling chamber, and the second cooling component is used to cool the ash in the ash cooling chamber.

9. The dry cycle slag discharging device according to claim 1, characterized in that: include: a first driving member, the first driving member acting on the primary gate valve, and used for driving the primary gate valve to switch between an open state and a closed state; a second driving member, the second driving member acting on the secondary gate valve, and used for driving the secondary gate valve to switch between an open state and a closed state; An electrical control unit, the electrical control unit is electrically connected to the first driving member and the second driving member, and is used to control the start and stop of the first driving member and the second driving member.

10. A rotary kiln, characterized in that: include: A kiln, wherein the kiln has a furnace chamber for combustion and a kiln tail hood communicated with the furnace chamber, and a slag discharge port is provided at the bottom of the kiln tail hood; An inclined chute, wherein the extending direction of the inclined chute forms an angle with the vertical direction, the inclined chute has a top inlet and a bottom outlet, and the top inlet of the inclined chute is connected to the slag discharge port; A dry-cycle slag-discharging device, wherein the dry-cycle slag-discharging device is a dry-cycle slag-discharging device according to any one of claims 1 to 9, wherein the bottom outlet of the inclined chute is connected to the ash inlet of the ash transfer box, and the first-level gate valve is arranged between the ash inlet and the bottom outlet of the inclined chute.

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