WO2011035509A1 - Cooling machine - Google Patents

Abstract

A cooling machine (2) comprises a grate bed (3) and a chute (4) provided along the transport direction of materials. The grate bed (3) is provided with a cooling device. The chute (4) includes an inlet end, a body and an outlet end. The inlet end of the chute (4) is positioned under the outlet end of the grate bed (3). The chute (4) is provided with a cooling device to cool the materials (5) inside it. The cooling machine (2) has the advantages of compact structure, low energy consumption and low cost.

Description

 Cooler

Technical field

 The invention relates to a material cooling and conveying device, in particular to a belt cooling machine for cooling materials after firing in a metallurgical chemical industry and a cement building material industry. Background technique

 The cooling machine is an indispensable important equipment in the metallurgical chemical industry and cement building materials calcination system. Its main function is to cool the hot materials burned in the rotary kiln to the temperature allowed by the subsequent transportation, storage and grinding processes to ensure normal continuous production; at the same time, the cooling machine is still a heat exchange device, requiring materials The heat contained in the interior is maximized for recycling and utilization to improve the thermal efficiency of the system and save energy.

 With the advancement of science and technology, the trampoline of the traditional grate cooler has been developed from leaking materials to no leakage, and both technological advancement and reliability have reached a new level. However, the conveying method relies on the pushing device to push the material to advance along the boring bed with a certain thickness of the material layer, and the cold air passes through the material layer for heat exchange to ensure the cooling effect. Such a transmission method requires the grate cooler to reach a certain length in the transmission direction to ensure the discharge temperature, resulting in a large fuselage body, a large floor space, a large number of moving parts, high power consumption, and high running cost. Summary of the invention

 In order to solve the problems of the prior art, the grate cooler has a large body, a large floor space, a large number of moving parts, high power consumption, and high running cost, the present invention provides a belt cooling machine, which has a compact structure. Saves floor space, consumes less energy, and greatly reduces operating costs.

 Technical solutions:

 A sling cooler includes a boring machine and a chute disposed along a material conveying direction, the boring machine is provided with a cooling device, and the chute includes a chute inlet end, a chute body and a chute outlet end, and the chute inlet end Located below the outlet end of the trampoline, the chute is provided with a cooling device for cooling the material inside the chute.

 The chute is a chute with an adjustable angle and/or thickness, the angle is an inner angle between the lower panel of the chute and the horizontal plane, the thickness is the distance between the upper and lower plates of the chute and/or the left and right panels of the chute The distance between the chutes is a channel surrounded by upper, lower, left and right panels of the chute.

 The angle of the chute is greater than the stacking angle of the material, less than or equal to 90 degrees.

The angle of the chute is greater than the friction angle between the material and the lower panel of the chute, less than or equal to 90 degrees. The distance between the upper and lower plates of the chute is not less than the material thickness of the trampoline. The distance between the left and right panels of the chute gradually increases from the inlet end of the chute to the outlet end of the chute.

 The chute is provided with a cooling device comprising upper and lower venting holes for ventilating and non-leakable chutes respectively on the chute and the lower plate, a closed chute upper plenum arranged above the chute, and a closed ventilating groove disposed under the chute The chute lower chamber and the chute fan are configured to provide cooling air for the material inside the chute through the chute lower chamber and the lower venting hole of the chute, and the hot air after the heat exchange is discharged into the chute upper chamber through the vent hole on the chute.

 The upper and lower plates of the chute are parallel to each other, and the venting holes under the chute are distributed in the middle of the lower panel of the chute, and the venting hole under the chute closest to the chute outlet end is located at a distance from the lower plate of the chute to the outlet end of the chute is larger than the upper and lower plates of the chute the distance between.

 The vertical distance from the venting opening of the chute closest to the inlet end of the chute to the inlet end of the chute is greater than the distance between the upper and lower plates of the chute.

 A wind lock device capable of leaking material and not being ventilated is disposed at the outlet end of the chute.

 The chute upper chamber is provided with an air outlet.

 The trampoline is provided with a cooling device comprising a trampoline chamber connected to the rotary kiln on the trampoline, a closed trampoline downwind chamber disposed under the trampoline, and a quenching fan, the quenching wind The machine is used for supplying cooling air to the material of the trampoline through the trampoline lower air chamber, and after entering the air chamber through the heat exchange, the trampoline wind chamber is connected with the chute upper wind chamber or the trampoline air chamber is independent of The chute upper wind chamber.

 The sling cooler further includes a catch for ejecting the bulk material, the inlet end of the raft being located below the exit end of the trampoline and above the inlet end of the chute.

 An unloader is disposed at the outlet end of the chute.

 The unloader is a rotary discharge device, an electromagnetic vibration discharge device or a scraper.

 The belt cooling machine further includes a level gauge for detecting the material level at the inlet end of the chute, and feeding back the test result to the unloader. The utility model relates to a belt cooling machine, comprising a chute and a cooling device, wherein the chute comprises a chute inlet end, a chute body and a chute outlet end, the chute inlet end is located below the discharge end of the rotary kiln, and the cooling device is used for cooling the chute Internal material.

 The chute is a chute with an adjustable angle and/or thickness, the angle is an inner angle between the lower panel of the chute and the horizontal plane, the thickness is the distance between the upper and lower plates of the chute and/or the left and right panels of the chute The distance between the chutes is a channel surrounded by upper, lower, left and right panels of the chute.

 The angle of the chute is greater than the stacking angle of the material, less than or equal to 90 degrees.

The angle of the chute is greater than the friction angle between the material and the lower panel of the chute, less than or equal to 90 degrees. The distance between the left and right panels of the chute gradually increases from the inlet end of the chute to the outlet end of the chute.

 The cooling device comprises upper and lower venting holes of the chute which can be ventilated and can not be leaked respectively on the upper and lower plates of the chute, and a chute upper chamber connected with the rotary kiln is arranged above the chute, and the closed chute is arranged below the chute The plenum chamber and the chute fan are configured to provide cooling air for the material inside the chute through the ventilating chamber of the chute and the venting hole under the chute, and the hot air after the heat exchange is discharged into the plenum of the chute through the vent hole of the chute.

 The upper and lower plates of the chute are parallel to each other, and the venting holes under the chute are distributed in the middle of the lower panel of the chute, and the venting hole under the chute closest to the chute outlet end is located at a distance from the lower plate of the chute to the outlet end of the chute is larger than the upper and lower plates of the chute the distance between.

 The vertical distance from the venting opening of the chute closest to the inlet end of the chute to the inlet end of the chute is greater than the distance between the upper and lower plates of the chute.

 A wind lock device capable of leaking material and not being ventilated is disposed at the outlet end of the chute.

 The chute upper chamber is provided with an air outlet.

 The sling cooler further includes a rafter for picking up the bulk material, the inlet end of the raft being located below the discharge end of the rotary kiln and above the inlet end of the chute.

 An unloader is disposed at the outlet end of the chute.

 The belt cooling machine further includes a level gauge for detecting the material level of the inlet end of the chute, and feeding back the detection result to the unloader. Technical effect:

 The invention provides a sling cooler, which comprises a boring machine and a chute arranged along the material conveying direction, wherein the material enters the chute after being quenched by the boring machine, and the chute slams the material to the non-pushing device and relies on its own gravity Under the sliding process, the cooling device cools the material inside the chute during the sliding process to achieve the cooling effect. Therefore, the grate cooler which is also carried out on a trampoline with respect to the slow cooling process has a compact structure and space saving, and the chute section does not require a pushing device, which can consume less and lower the running cost.

 The chute is a chute with an adjustable angle and/or thickness, and the distance between the upper and lower plates of the chute is adjusted to be not less than the thickness of the material on the trampoline. The purpose is to ensure the residence time of the material inside the chute, thereby ensuring Cooling effect; adjust the angle of the chute to the material stacking angle and 90 degrees (including 90 degrees) or adjust to the friction angle between the material and the lower panel of the chute and 90 degrees (including 90 degrees), which is good for the material down. slide.

Preferably, the distance between the left and right panels of the chute gradually increases from the inlet end of the chute to the outlet end of the chute, firstly, the thickness of the material layer is ensured to be uniform, and secondly, the residence time of the material in the chute is ensured, thereby ensuring cooling. effect. Further, the upper and lower plates of the chute are respectively provided with upper and lower venting holes of the chute which can be ventilated and can not be leaked, so that the cooling air provided by the chute fan can enter the chute and exchange heat with the materials, and at the same time ensure that the materials do not leak through the vent holes. Drop it.

 The venting hole under the chute is distributed in the middle of the lower panel of the chute, and the venting hole under the chute closest to the chute outlet end is located at a distance from the lower panel of the chute to the outlet end of the chute, which is greater than the distance between the upper and lower plates of the chute, so that the inside of the chute is entered. After the cooling air and the material are fully exchanged, the heat is recovered from the vent hole of the chute into the upper air chamber of the chute to avoid heat discharge directly from the outlet end of the chute; further, the vertical distance from the venting hole of the chute closest to the inlet end of the chute to the inlet end of the chute is greater than that of the chute The distance between the upper and lower plates allows the cooling air entering the chute to exchange heat with the material and then enters the chute upper chamber from the vent hole of the chute for heat recovery, although the hot air directly discharged from the inlet end of the chute can also be used for heat. Recycling, but heat recovery is inefficient and affects the cooling effect on the material. Of course, it is also possible to provide a wind-locking device capable of leaking material and not ventilating at the outlet end of the chute, so as to prevent hot air from being directly discharged from the outlet end of the chute, and there is no restriction on the distribution of the ventilating holes under the chute, but the chute closest to the inlet end of the chute The vertical distance from the lower vent to the inlet end of the chute is limited, i.e., greater than the distance between the upper and lower plates of the chute, because the hot air is prevented from being discharged from the inlet end of the chute.

 The chute upper chamber can be an independent plenum or connected to the trampoline plenum. When the upper air chamber of the chute is an independent air chamber, an air exhaust opening is opened on the upper air chamber of the chute for discharging hot air after heat exchange; when the upper air chamber of the chute is connected with the wind chamber of the trampoline, the hot air discharged from the chute is mixed into the trampoline to discharge The hot air enters the rotary kiln together. Of course, the air outlet of the chute can also be provided with an air outlet, so that some of the hot air discharged from the chute is mixed into the rotary kiln and the other part is discharged through the exhaust vent.

 Preferably, the belt cooling machine further comprises a rafter for scooping out the bulk material to be entered into the chute.

 Further, an unloader is arranged at the outlet end of the chute for controlling the discharge, and the residence time of the material in the chute is controlled by controlling the discharge to ensure that the material is sufficiently cooled. In addition, the belt cooling machine further includes a level gauge for detecting the material level at the inlet end of the chute, and feeding back the test result to the unloader for providing a basis for discharging.

 The invention also provides a sling cooler, comprising a chute and a cooling device, wherein the inlet end of the chute is located below the discharge end of the rotary kiln, and the material directly enters the chute for cooling, and the sling cooler is mainly for materials that do not require quenching. After the material directly enters the chute, the chute holds the material without any pushing device, and the material slides downward by its own gravity. During the sliding process, the cooling device cools the material inside the chute to achieve the cooling effect. The space for the belt cooling machine is further reduced, and the entire belt cooling machine does not require a pushing device, which further reduces energy consumption and greatly reduces operating costs.

The chute is an angle and/or thickness adjustable chute, adjusting the angle of the chute to a material accumulation angle of 90 degrees (including 90 degrees) or adjusting the friction angle between the material and the lower panel of the chute and 90 degrees. Between (including 90 degrees), it helps the material to slide down. Preferably, the distance between the left and right panels of the chute gradually increases from the inlet end of the chute to the outlet end of the chute, firstly, the thickness of the material layer is ensured to be uniform, and secondly, the residence time of the material in the chute is ensured, thereby ensuring cooling. effect.

 Further, the upper and lower slabs of the chute are respectively provided with upper and lower venting holes which can be ventilated and can not be leaked, so that the cooling air provided by the chute fan can enter the chute and exchange heat with the materials, and at the same time ensure that the materials do not leak through the vent holes. .

 The venting hole under the chute is distributed in the middle of the lower panel of the chute, and the venting hole under the chute closest to the chute outlet end is located at a distance from the lower panel of the chute to the outlet end of the chute, which is greater than the distance between the upper and lower plates of the chute, so that the inside of the chute is entered. After the cooling air and the material are fully exchanged, the heat is recovered from the vent hole of the chute into the upper air chamber of the chute to avoid heat discharge directly from the outlet end of the chute; further, the vertical distance from the venting hole of the chute closest to the inlet end of the chute to the inlet end of the chute is greater than that of the chute The distance between the upper and lower plates allows the cooling air entering the chute to exchange heat with the material and then enters the chute upper chamber from the vent hole of the chute for heat recovery, although the hot air directly discharged from the inlet end of the chute can also be used for heat. Recycling, but heat recovery is inefficient and affects the cooling effect on the material. Of course, it is also possible to provide a wind-locking device capable of leaking material and not ventilating at the outlet end of the chute, so as to prevent hot air from being directly discharged from the outlet end of the chute, and there is no restriction on the distribution of the ventilating holes under the chute, but the chute closest to the inlet end of the chute The vertical distance from the lower vent to the inlet end of the chute is limited, i.e., greater than the distance between the upper and lower plates of the chute, because the hot air is prevented from being discharged from the inlet end of the chute.

 The chute chamber of the chute communicates with the rotary kiln, and the hot air discharged through the chute is returned to the rotary kiln for reuse. The exhaust chamber of the chute can also be provided with an exhaust vent, and a part of the hot air discharged through the chute is returned to the rotary kiln for reuse, and another part is The exhaust vent is discharged.

 Preferably, the belt cooling machine further comprises a rafter for scooping out the bulk material to be entered into the chute.

 Further, an unloader is arranged at the outlet end of the chute for controlling the discharge, and the residence time of the material in the chute is controlled by controlling the discharge to ensure that the material is sufficiently cooled. In addition, the belt cooling machine further includes a level gauge for detecting the material level at the inlet end of the chute, and feeding back the test result to the unloader for providing a basis for discharging. DRAWINGS

1 is a schematic front view showing the structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram showing the structure of a right view according to another embodiment of the present invention.

3 is a schematic front view showing the structure of a third embodiment of the present invention;

Figure 4 is a schematic view of the right side view of Figure 3. Examples of reference numerals are as follows:

1-turn kiln, 11-kiln head cover, 2-inch belt cooler, 3- boring machine, 31-篦 bed plenum, 32-boring plenum, 33-篦 chiller, 4-slot, 41-slot Upwind chamber, 411-exhaust vent, 412-large block outlet, 42-slot downwind chamber, 43-slot fan, 44-slewing unloading device, 45-tweezers, 46-radar level gauge, 47-slot upper panel, 471-slot venting, 48-slot lower panel, 481-slot venting, 5-material. detailed description

 In order to make the objects, the technical solutions and the advantages of the present invention more comprehensible, the present invention will be described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

 Example 1, Example 2:

 Referring to FIG. 1, a schematic diagram of a front view of an embodiment of the present invention is shown. The material 5 fired from the rotary kiln 1 is discharged on the belt cooler 2 for cooling. The belt cooling machine 2 mainly comprises a boring machine 3 and a chute 4, and the inlet end of the chute is located below the outlet end of the shovel bed 3, so that the material 5 is cooled by the boring machine and then enters the chute 4 to continue cooling to the required temperature.

 A trampoline chamber 31 communicating with the kiln head cover 11 of the rotary kiln 1 is disposed above the trampoline 3, and a closed trampoline downwind chamber 32 is disposed below the trampoline 3, and the quenching fan 33 passes through the trampoline downwind chamber 32. The material 5 of the trampoline is supplied with cooling air for heat exchange, and the hot air after the heat exchange passes through the trampoline plenum 31 and the kiln head cover 11 to enter the rotary kiln 1.

 The chute 4 is an angle-adjustable chute, and the inner angle between the lower panel of the chute and the horizontal plane can be selected according to the nature of the material and the space of the storage device. In the preferred case, the angle is at the stacking angle of the material (or the material and the chute) The friction angle between the panels is selected from 90 degrees (including 90 degrees) to facilitate the sliding of the material to the outlet end of the chute; the chute 4 is also a chute with adjustable thickness, that is, the chute can be adjusted by adjusting the upper panel 47 of the chute. The distance between the lower plates is to ensure the residence time of the material inside the chute, so as to ensure the cooling effect. Of course, it is easy to think that the chute can be adjusted by adjusting the lower plate 48 of the chute or the left panel of the chute or the right panel of the chute according to the actual working conditions. thickness. The upper and lower panels of the chute in this embodiment are parallel to each other, and the left and right panels of the chute are parallel to each other. Of course, the distance between the left and right panels of the chute can be gradually increased from the inlet end of the chute to the outlet end of the chute. The purpose is to: firstly, ensure the thickness of the material layer is uniform, and secondly, to ensure the residence time of the material in the chute , thus ensuring the cooling effect.

A chute upper venting hole 471 and a chute lower venting hole 481 are provided on the upper and lower panels 47 and 48 of the chute, and a chute upper venting chamber 41 is provided above the chute, and a chute upper chamber 41 communicating with the trampoline plenum 31 is provided. A closed chute plenum 42 is disposed underneath, and a chute fan 43 is further included for providing cooling air to the material 5 through the chute plenum 42 and the chute lower vent 481 into the chute 4, and passing the hot air after the heat exchange through the chute The upper vent 471 is discharged into the chute upper chamber 41. Wherein, the chute lower vent 481 is distributed in the middle of the chute lower panel 48, and the vertical distance from the chute lower vent 481-1 to the inlet end closest to the chute inlet end is greater than the distance between the upper and lower plates of the chute, closest to the chute outlet The distance between the lower ventilating hole 481-2 of the chute along the lower panel of the chute to the outlet end is greater than the distance between the upper and lower plates of the chute, so that the cooling air entering the chute 4 and the material are subjected to sufficient heat exchange and then enter from the vent hole 471 of the chute. Chute The air chamber prevents the cooling air entering the chute from being directly discharged from the inlet end of the chute and the outlet end of the chute. In the actual production process, the vertical distance from the venting opening 481-1 of the chute closest to the inlet end of the chute to the inlet end may be equal to or slightly smaller than the distance between the upper and lower plates of the chute, and the chute vent 481 closest to the chute outlet end. 2 The distance from the lower panel to the outlet end of the chute may be equal to or slightly smaller than the distance between the upper and lower plates of the chute. The reason is that, considering the thickness of the layer, the chute lower vent 481-1 to the chute inlet closest to the inlet end of the chute The vertical distance of the upper layer of the material at the end is greater than the distance between the upper and lower plates of the chute. Similarly, the lower venting opening 481-2 of the chute closest to the outlet end of the chute is larger than the chute along the lower layer of the chute to the outlet end. The distance between the lower plates is sufficient.

 The chute upper chamber 41 communicates with the trampoline chamber 31, and the chute upper chamber 41 is provided with an air outlet 411, and the hot air after the cooling air and the chute internal material are sufficiently heat exchanged is discharged into the chute upper chamber through the chute upper vent 471. 41. A part of the hot air is mixed into the rotary kiln 1 through the kiln head cover 11 and mixed with the heat exchanged by the material on the trampoline, and the other part is discharged through the exhaust 411. Of course, the chute chamber 41 may not have an exhaust vent, and the hot air discharged through the chute is mixed into the hot air exchanged by the material on the trampoline and then returned to the rotary kiln through the kiln head cover 11. In addition, the chute upper chamber 41 may be a separate upwind chamber that does not communicate with the trampoline plenum. At this time, the chute upper chamber 41 must have an exhaust vent 411 for discharging hot air.

 The rotary discharge device 44 is disposed at the outlet end of the chute 4, and the conveying direction of the rotary discharge device 44 is consistent with the conveying direction of the material on the boring machine and the chute (as shown in Fig. 1), and may also be perpendicular to the material in the boring machine and the chute. The upper conveying direction (Example 2, see Fig. 2), regardless of the conveying direction, can control the residence time of the material inside the chute by controlling the start and stop and conveying speed of the rotary unloading device to ensure that the material is sufficiently cooled. A radar level gauge 46 is disposed vertically above the inlet end of the chute for detecting the level of the material at the inlet end of the chute, and feeding the test result back to the rotary unloading device 44, so that the unloading device 44 controls the unloading. Of course, the choice of the level gauge is not limited to the radar level gauge. It can also be a ray level gauge and a pressure level gauge set at the corresponding positions, as long as the material level at the entrance of the chute can be detected.

The belt cooler 2 further includes a tweezers 45 for picking up large pieces of material, the inlet end of the tweezers 45 being located below the outlet end of the trampoline and above the inlet end of the chute, and a large block is formed in the side wall of the chute chamber 41 Feed outlet 412, the outlet end of the detent 45 extends to the bulk outlet 412, and the outlet end of the tweezers is lower than the inlet end of the tweezers, allowing bulk material to be discharged from the bulk outlet 412 by its own weight. Of course, the tweezers used are not limited to this structure, and may be: the inlet end of the tweezers is located below the outlet end of the trampoline and above the inlet end of the chute, and the outlet end of the tweezers is located inside the chute chamber 41 of the chute. The barb shape of the inlet end, preferably, the outlet end of the tweezers is higher than the inlet end, at which time the bulk material is left on the tweezers, and the large piece of material on the tweezers is used along with the push-pull device matched with the tweezers In the direction perpendicular to the movement of the material, the large block outlet opened on the corresponding side wall of the chute upper chamber 41 is pushed out, and the large piece of material can be pulled back through the broken piece of material, and enters through the tweezers. Chute 4. The working process of the belt cooling machine in Embodiment 1 and Embodiment 2 is as follows:

 The material 5 fired in the rotary kiln 1 is discharged on the boring machine 3, and the chiller 33 supplies cooling air to the leeward lower chamber 32, and the cooling air passes through the slab contact material 5 so that the material 5 is at the inlet end from the boring machine. Cooling is carried out during the movement to the outlet end; then the material 5 is taken out from the outlet end of the trampoline 3 through the tweezers 45 to enter the chute 4, and the ejected bulk material is discharged from the bulk outlet 412. The radar level gauge 46 is used to detect the material level at the inlet end of the chute, and feeds the information back to the rotary discharge device 44 at the outlet end of the chute. The opening, stopping and conveying speed of the rotary unloading device 44 control the material 5 inside the chute 4. The dwell time is to ensure the cooling effect, and the chute fan 43 supplies cooling air to the chute plenum 42. The hot air passing through the chute vent 481 to contact the material 5 is discharged into the chute upper chamber 41 through the chute upper vent 471. Then, a part of the hot air is mixed into the rotary kiln 1 and the hot air discharged through the trampoline is returned to the rotary kiln 1, and a part of the hot air is discharged through the exhaust 411. Example 3

 Fig. 3 is a front view showing the structure of the third embodiment of the present invention, and the main difference from the first embodiment and the second embodiment is that the tape cooler 2 of the present embodiment is mainly used for materials which do not require quenching. The inlet end of the chute is located below the discharge end of the rotary kiln, so that the material 5 fired in the rotary kiln 1 directly enters the inside of the chute 4 from its discharge end. The chute 4 includes a chute inlet end, a chute body and a chute outlet end. The material is cooled during the movement from the inlet end of the chute to the outlet end of the chute, and is discharged to the rotary discharge device 44 at the outlet end after reaching the required temperature.

 The chute 4 is an angle-adjustable chute, and the angle between the lower panel of the chute and the horizontal plane can be selected according to the nature of the material and the space of the storage device. In the preferred case, the angle is at the stacking angle of the material (or the material and the lower panel of the chute) The choice between the friction angle and the 90 degree (including 90 degrees) is beneficial to the material sliding to the exit end of the chute.

 The upper and lower plates of the chute in this embodiment are parallel to each other, and the distance between the left and right panels of the chute gradually increases from the inlet end of the chute to the outlet end of the chute (see FIG. 4), and the purpose thereof is: The thickness of the material layer is uniform, and secondly, the residence time of the material in the chute is ensured, thereby ensuring the cooling effect.

On the upper and lower panels 47 and 48 of the chute, a chute upper venting hole 471 and a chute lower venting hole 481 are provided, and a chute upper venting chamber 41 communicating with the kiln head cover 11 is disposed above the chute, and the chute upper chamber 41 is disposed above the chute A chute plenum 42 is provided, and a chute fan 43 is further included for providing cooling air to the material 5 through the chute plenum 42 and the chute vent 481, and the hot air after the heat exchange is passed through the chute. The vent hole 471 is discharged into the chute upper chamber 41, and the hot air entering the chute upper chamber is partially returned to the rotary kiln 1, and a part is discharged from the exhaust 411. Wherein, in the same manner as in Embodiment 1 and Embodiment 2, the chute lower vent 481 is distributed in the middle of the chute lower panel 48, and the vertical distance from the chute lower vent 481-1 to the inlet end closest to the chute inlet end is greater than the chute upper and lower plates. The distance between the lower venting opening 481-2 of the chute closest to the chute outlet end is greater than the distance between the lower panel and the lower end of the chute, so that the cooling air entering the chute 4 and the material are sufficiently heated. After the exchange, the vent hole 471 from the chute enters the chute The plenum 41 prevents the cooling air entering the chute from being directly discharged from the inlet and outlet ends of the chute. In the actual production process, the vertical distance from the venting opening 481-1 of the chute closest to the inlet end of the chute to the inlet end may be equal to or slightly smaller than the distance between the upper and lower plates of the chute, and the chute vent 481 closest to the chute outlet end. 2 The distance from the lower panel to the outlet end of the chute may be equal to or slightly smaller than the distance between the upper and lower plates of the chute. The reason is that, considering the thickness of the layer, the chute lower vent 481-1 to the chute inlet closest to the inlet end of the chute The vertical distance of the upper layer of the material at the end is greater than the distance between the upper and lower plates of the chute. Similarly, the lower venting opening 481-2 of the chute closest to the outlet end of the chute is larger than the chute along the lower layer of the chute to the outlet end. The distance between the lower plates is sufficient.

 In the same manner as the first and second embodiments, the rotary discharge device 44 is disposed at the outlet end of the chute 4, and a radar level gauge 46 is disposed vertically above the inlet end of the chute, and a dice 45 for picking up large pieces of material is also included. The inlet end of the tweezers 45 is located below the discharge end of the rotary kiln and above the inlet end of the chute. The working process of the belt cooling machine in this embodiment is as follows:

 The material 5 fired in the rotary kiln 1 is taken out from the discharge end through the tweezers 45 to directly enter the chute 4, and the bulk material to be discharged is discharged from the bulk material outlet 412, and the radar level gauge 46 is used. The material of the inlet end of the chute is detected, and the information is fed back to the rotary discharge device 44 at the outlet end of the chute. The opening, stopping and conveying speed of the rotary unloading device 44 control the residence time of the material 5 inside the chute 4 to ensure cooling. The effect is that the chute fan 43 supplies cooling air to the chute plenum 42. The hot air passing through the chute vent 481 to contact the material 5 is discharged into the chute upper chamber 41 through the chute upper vent 471, and then a part of the hot air is returned to the rotary kiln 1 A part of the hot air is discharged through the air outlet 411. In addition, in the above three embodiments, in order to prevent the hot air after heat exchange with the material in the chute from being directly discharged from the outlet end of the chute, a wind lock device capable of leaking material and not being ventilated may be disposed at the outlet end of the chute. There is no longer a limit to the chute lower vent 481-2 closest to the chute outlet end. Further, the rotary discharge device 44 of the above three embodiments may be replaced by an electromagnetic vibration discharge device or a scraper.

Claims

Rights request A belt cooling machine comprising a boring machine and a chute arranged along a material conveying direction, the boring machine being provided with a cooling device, the chute comprising a chute inlet end, a chute body and a chute outlet end, the chute The inlet end is located below the outlet end of the trampoline, and the chute is provided with a cooling device for cooling the material inside the chute.  2 . The belt cooling machine according to claim 1 , wherein the chute is a chute having an adjustable angle and/or thickness, wherein the angle is an inner angle between a lower panel of the chute and a horizontal plane, and the thickness is The distance between the upper and lower plates of the chute and/or the distance between the left and right panels of the chute, the chute body being a passage surrounded by the upper, lower, left and right panels of the chute.  The belt cooling machine according to claim 2, wherein the angle of the chute is greater than a stacking angle of the material, and is less than or equal to 90 degrees.  The belt cooling machine according to claim 2, wherein the angle of the chute is greater than a friction angle between the material and the lower panel of the chute, and is less than or equal to 90 degrees.  The belt cooling machine according to claim 2, wherein a distance between the upper and lower plates of the chute is not less than a material thickness of the trampoline.  The belt cooling machine according to claim 2, wherein a distance between the left and right panels of the chute gradually increases in a direction from the inlet end of the chute to the outlet end of the chute.  The belt cooling device according to claim 1, wherein the chute is provided with a cooling device including a ventilating groove on the upper and lower plates of the chute, and a ventilating groove capable of ventilating and not leaking a closed chute upwind chamber disposed above the chute, a closed chute downwind chamber disposed below the chute, and a chute fan for providing cooling air to the material inside the chute through the chute downwind chamber and the chute under the chute. The hot air after heat exchange is discharged into the upper chamber of the chute through the vent hole on the chute.  The belt cooling machine according to claim 7, wherein the upper and lower plates of the chute are parallel to each other, and the venting holes of the chute are distributed in the middle of the lower panel of the chute, and the chute closest to the outlet end of the chute The distance of the lower vent hole along the lower panel of the chute to the outlet end of the chute is greater than the distance between the upper and lower plates of the chute.  The belt cooling machine according to claim 8, wherein the vertical distance from the lower vent hole of the chute to the inlet end of the chute to the inlet end of the chute is greater than the distance between the upper and lower plates of the chute.  The belt cooling machine according to claim 7, characterized in that the outlet end of the chute is provided with a wind lock device capable of leaking material and not being ventilated. The belt cooling machine according to claim 7, wherein the chute upper chamber is provided with an air outlet. The belt cooling machine according to any one of claims 7 to 11, wherein the boring machine is provided with a cooling device comprising a trampoline chamber disposed on the trampoline and connected to the rotary kiln. a closed trampoline plenum disposed under the trampoline, and a quenching fan for supplying cooling air to the material of the trampoline through the plenum bed of the trampoline, and after entering the blast chamber by heat exchange, The bed wind chamber is in communication with the chute upper chamber or the tram bed chamber is independent of the chute upper chamber.  The sling cooler according to any one of claims 1 to 11, wherein the sling cooler further comprises a rafter for plucking a large piece of material, the inlet end of the raft being located at the Below the exit end of the trampoline, above the inlet end of the chute.  The belt cooling machine according to claim 1, wherein a discharger is provided at an outlet end of the chute.  The belt cooling machine according to claim 14, wherein the discharger is a rotary discharge device, an electromagnetic vibration discharge device, or a scraper.  The belt cooling machine according to claim 14 or 15, wherein the belt cooling machine further comprises a level gauge for detecting a material level at the inlet end of the chute, and feeding back the detection result to the Denoter.  17. A belt cooling machine comprising a chute and a cooling device, the chute comprising a chute inlet end, a chute body and a chute outlet end, the chute inlet end being located below the discharge end of the rotary kiln, the cooling device being used Cool the material inside the chute.  The belt cooling machine according to claim 17, wherein the chute is a chute having an adjustable angle and/or thickness, and the angle is an inner angle between a lower panel of the chute and a horizontal plane, and the thickness is The distance between the upper and lower plates of the chute and/or the distance between the left and right panels of the chute, the chute body being a passage surrounded by the upper, lower, left and right panels of the chute.  The belt cooling machine according to claim 18, wherein the angle of the chute is greater than a stacking angle of the material, and is less than or equal to 90 degrees.  The belt cooling machine according to claim 18, wherein the angle of the chute is larger than a friction angle between the material and the lower panel of the chute, and is less than or equal to 90 degrees.  The belt cooling machine according to claim 18, wherein a distance between the left and right panels of the chute is gradually increased in a direction from the inlet end of the chute to the outlet end of the chute. The belt cooling machine according to claim 17, wherein the cooling device comprises upper and lower venting holes for the ventilating and non-leakable chutes on the upper and lower plates of the chute, above the chute a chute upper chamber connected to the rotary kiln, a closed chute downwind chamber disposed below the chute, and a chute fan The chute fan is used to supply cooling air to the material inside the chute through the chute lower chamber and the venting hole under the chute, and the hot air after the heat exchange is discharged into the chute upper chamber through the vent hole on the chute.  The belt cooling machine according to claim 22, wherein the upper and lower plates of the chute are parallel to each other, and the venting holes of the chute are distributed in the middle of the lower panel of the chute, and the chute closest to the outlet end of the chute The distance of the lower vent hole along the lower panel of the chute to the outlet end of the chute is greater than the distance between the upper and lower plates of the chute.  24. A cassette cooling machine according to claim 23, wherein the vertical distance from the venting opening of the chute closest to the inlet end of the chute to the inlet end of the chute is greater than the distance between the upper and lower plates of the chute.  The belt cooling machine according to claim 22, wherein a wind lock device capable of leaking material and not ventilating is provided at the outlet end of the chute.  The belt cooling machine according to any one of claims 22 to 25, characterized in that the chute upper chamber is provided with an air outlet.  The belt cooling machine according to any one of claims 22 to 25, wherein the belt cooling machine further comprises a rafter for plucking a large piece of material, the inlet end of the raft being located at a slewing Below the discharge end of the kiln, above the inlet end of the chute.  The belt cooling machine according to claim 17, wherein a discharger is provided at the outlet end of the chute.  The belt cooling machine according to claim 28, wherein the belt cooling machine further comprises a level gauge for detecting a material level at the inlet end of the chute, and feeding back the detection result to the discharging Device.