Vertical heat exchange equipment for clay cooling

Abstract

The invention provides a vertical heat exchange device for clay cooling, comprising: a housing having a deformation part, the side wall of which is provided with a cooling medium inlet and a hot air outlet; a plurality of through holes are formed in each of the top pore plate and the bottom pore plate, and the top pore plate and the bottom pore plate are parallel to each other; the multiple blanking steel pipes are located in the shell, and the two ends of each blanking steel pipe communicate with the corresponding through holes in the top pore plate and the corresponding through holes in the bottom pore plate correspondingly; the partition plate assembly comprises a plurality of first air guide partition plates and a plurality of second air guide partition plates which are located between the top pore plate and the bottom pore plate, and the first air guide partition plates and the second air guide partition plates are arranged in a spaced and staggered mode in the axial direction of the shell; and the two ends of the S-shaped cooling channel communicate with the cooling medium inlet and the hot air outlet correspondingly, and the S-shaped cooling channel comprises a first gap, a second gap and a third gap between every two adjacent air guide partition plates. The material pressure stability in the vertical heat exchange equipment can be ensured, and the service life of the equipment can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of clay cooling, in particular to a vertical heat exchange device for clay cooling. Background Art

[0002] Calcined clay is a cement clinker substitute obtained by high-temperature treatment of clay raw materials. Compared with traditional clinker, calcined clay does not produce carbon dioxide during the heat treatment process, but only releases water vapor and some trace emissions. Therefore, the cement produced by it reduces carbon emissions by 40% compared with traditional cement; the chemical composition of calcined clay varies little, and the performance of cement products produced with it as an admixture is more predictable and controllable; calcined clay can solve the problem of lack of admixtures such as fly ash and slag in some areas, and can be used in combination with other materials such as limestone to form a ternary mixed cement with excellent performance; and the use of calcined clay helps to reduce dependence on traditional clinker, thereby reducing carbon emissions and the demand for imported raw materials, in line with the requirements of sustainable development.

[0003] For the high-temperature clay calcined at 800-900°C, it is necessary to prevent it from being oxidized to red when in contact with oxygen in the air during the cooling stage, and it is hoped that the calcined clay will remain gray after cooling. That is, a clay cooling device is currently needed to cool the calcined high-temperature clay to below 300 degrees and ensure that the clay is not oxidized and discolored.

[0004] At present, although the clay cooling equipment in the prior art can complete the cooling of calcined clay, the thermal expansion and contraction of the blanking steel pipe caused by the temperature difference of the clay before and after cooling will lead to unstable material pressure in the equipment and short equipment life. Therefore, how to ensure the stability of material pressure in the clay cooling equipment and extend the service life of the equipment is a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a vertical heat exchange device for clay cooling to eliminate or improve one or more defects existing in the prior art.

[0006] One aspect of the present invention provides a vertical heat exchange device for cooling clay, the vertical heat exchange device comprising:

[0007] A shell, wherein the shell has a deformation portion that can be extended and retracted along its axial direction, the top of the shell has a feed port, the bottom of the shell has a discharge port, and the side wall of the shell has a cooling medium inlet and a hot air outlet, the hot air outlet is located at one end of the shell close to the feed port, and the cooling medium inlet is located at one end of the shell close to the discharge port;

[0008] A top orifice plate and a bottom orifice plate are both located in the shell, and each of the top orifice plate and the bottom orifice plate has a plurality of through holes, the top orifice plate and the bottom orifice plate are parallel to each other, and the top orifice plate is located between the hot air outlet and the feed port, and the bottom orifice plate is located between the cooling medium inlet and the discharge port;

[0009] A plurality of blanking steel pipes are located in the shell, and two ends of each blanking steel pipe are respectively connected to a corresponding through hole on the top orifice plate and a corresponding through hole on the bottom orifice plate;

[0010] A baffle assembly, comprising a plurality of first air guide baffles and a plurality of second air guide baffles, wherein the plurality of first air guide baffles and the plurality of second air guide baffles are all located between the top orifice plate and the bottom orifice plate, the plurality of first air guide baffles and the plurality of second air guide baffles are spaced and staggered in the axial direction of the shell, each of the first air guide baffles and each of the second air guide baffles is provided with a through hole for the blanking steel pipe to pass through, the first air guide baffle extends horizontally from the first side wall of the shell toward the second side wall opposite to the first side wall, the second air guide baffle extends horizontally from the second side wall of the shell toward the first side wall, and a first gap is provided between the end of the first air guide baffle and the second side wall, and a second gap is provided between the end of the second air guide baffle and the first side wall;

[0011] The two ends of the S-shaped cooling channel are respectively connected to the cooling medium inlet and the hot air outlet. The S-shaped cooling channel includes the first gap, the second gap and the third gap between two adjacent air guide partitions.

[0012] In some embodiments of the present invention, the shell includes an upper shell and a lower shell that are detachably connected, the deformation portion is located on the lower shell, and the bottom end of the upper shell has a supporting ring seat for supporting the vertical heat exchange device.

[0013] In some embodiments of the present invention, the deformation portion includes a flexible shell segment and an elastic component arranged on the periphery of the flexible shell segment, and the elastic component is compressed and released synchronously with the telescopic movement of the flexible shell segment.

[0014] In some embodiments of the present invention, the elastic component includes a first spring and a second spring, and the top periphery and the bottom periphery of the flexible shell segment are respectively provided with an upper fixing plate and a lower fixing plate, the first spring is located between the upper fixing plate and the lower fixing plate, and the second spring is located on the top of the upper fixing plate.

[0015] In some embodiments of the present invention, the vertical heat exchange equipment includes a material distribution device, which includes a rotating drive component and a material distribution plate. The rotating drive component is arranged above the top side wall of the shell, the material distribution plate is located inside the shell, and the material distribution plate is located at the bottom of the feed port. The material distribution plate is connected to the output end of the rotating drive component so that the rotating drive component drives the material distribution plate to rotate.

[0016] In some embodiments of the present invention, the material distribution plate includes an outer ring shell, a plurality of partitions and a shaft body, the plurality of partitions are arranged along the radial direction of the outer ring shell, and the mid-surface of each partition coincides with the central axis of the outer ring shell, the shaft body is located on one side of the outer ring shell, and the axis of the shaft body is colinear with the central axis of the outer ring shell.

[0017] In some embodiments of the present invention, the vertical heat exchange equipment further comprises a filter screen, wherein the filter screen is located in the shell and between the material balancing pan and the top perforated plate.

[0018] In some embodiments of the present invention, the vertical heat exchanger includes a pressure equalizing module, which is located between the bottom orifice plate and the discharge port. The pressure equalizing module includes a plurality of conical equalizing rings, each of which has a top open portion and a bottom open portion. The plurality of conical equalizing rings are nested in sequence, and the side walls of two adjacent conical equalizing rings are fixedly connected. The sizes of the top open portions of the plurality of conical equalizing rings increase from the inside to the outside, and there is a distance between the bottom open portions of two adjacent conical equalizing rings.

[0019] In some embodiments of the present invention, the vertical heat exchange equipment includes a rotary discharge valve, and the rotary discharge valve is arranged below the discharge port.

[0020] In some embodiments of the present invention, the figure formed by the midpoints of the three adjacent through holes on the top orifice plate and the bottom orifice plate is an equilateral triangle; and / or, the blanking steel pipe is welded and sealed with the top orifice plate and the bottom orifice plate.

[0021] The vertical heat exchange equipment for clay cooling disclosed in the above embodiment of the present invention includes a shell, a top orifice plate, a bottom orifice plate, a blanking steel pipe, a partition assembly and an S-shaped cooling channel, and the shell has a deformation portion that can be extended and retracted along its axial direction, that is, when the blanking steel pipe of the present application expands and contracts based on the temperature change of the clay, the shell correspondingly extends or shortens synchronously with the blanking steel pipe, and the vertical heat exchange equipment is provided with an S-shaped cooling channel, which not only ensures the stability of the material pressure in the clay cooling equipment and improves the cooling efficiency of the calcined clay, but also avoids the occurrence of failure phenomena caused by the deformation of the blanking steel pipe in the vertical heat exchange equipment, thereby extending the service life of the equipment.

[0022] In addition, the vertical heat exchange equipment for clay cooling of the present application is provided with a rotary material equalizer, so that the material dropping of each dropping steel pipe is uniform, and the material height above each dropping steel pipe is ensured to be the same, thereby ensuring the material pressure stability and material pressure uniformity in the vertical heat exchange equipment, thereby further ensuring the consistency of the elongation or contraction of each dropping steel pipe, and further extending the service life of the vertical heat exchange equipment.

[0023] In addition to the above, a pressure equalizing module is provided between the bottom orifice plate and the discharge port of the vertical heat exchange equipment for clay cooling in the present application, and the pressure equalizing module includes multiple conical equalizing rings. The pressure equalizing module further reduces the difference in material pressure in multiple blanking steel pipes, thereby ensuring the consistency of the reaction force of the material, thereby improving the uniformity of the flow rate of the material in the blanking steel pipe and improving the heat exchange effect of the calcined clay.

[0024] Additional advantages, purposes, and features of the present invention will be described in part in the following description, and will become apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically indicated in the specification and the accompanying drawings.

[0025] Those skilled in the art will appreciate that the objectives and advantages that can be achieved with the present invention are not limited to the above specific description, and the above and other objectives that can be achieved by the present invention will be more clearly understood from the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0027] Figure 1 This is a schematic structural diagram of a vertical heat exchange device for clay cooling according to an embodiment of the present application.

[0028] Figure 2 for Figure 1 A view of a vertical heat exchanger for clay cooling is shown.

[0029] Figure 3 for Figure 1 A BB view of a vertical heat exchanger for clay cooling is shown.

[0030] Figure 4 for Figure 1A partial schematic diagram of a distribution device of a vertical heat exchanger for clay cooling is shown.

[0031] Figure 5 for Figure 4 The structural schematic diagram of the material distribution plate of the material distribution device is shown.

[0032] Figure 6 for Figure 1 The internal structure schematic diagram of the pressure equalizing module of the vertical heat exchange equipment for clay cooling is shown.

[0033] Figure 7a Schematic diagram of the seal between the blanking steel pipe and the top orifice plate.

[0034] Figure 7b Schematic diagram of the seal between the blanking steel pipe and the bottom orifice plate.

[0035] Figure 8 It is a schematic diagram of the connection relationship between the blanking steel pipe and the partition.

[0036] Reference numerals:

[0037] Upper shell 110 Lower shell 120 Feed inlet 131 Discharge port 132 Cooling medium inlet 133 Hot air outlet 134 Top orifice plate 141 Bottom orifice plate 142 Blanking steel pipe 200 First air guide baffle 310 Second air guide baffle 320 S-type cooling channel 400 Support ring seat 111 Flexible shell section 121 First spring 122 Second spring 123 Upper fixed plate 124 Lower fixed plate 125 Rotary drive component 510 Material equalizing plate 520 Outer ring shell 521 Baffle 522 Shaft 523 Filter 600 First conical material equalizing ring 710 Second conical material equalizing ring 720 Third conical material equalizing ring 730 Rotary discharge valve 800 Upper limit of material level 911 Lower limit of material level 912 Material level sensor 913 First temperature sensor 921 Second temperature sensor 922 Third temperature sensor 923 Fourth temperature sensor 924 DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0039] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0040] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0041] It should also be noted that, unless otherwise specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can mean fixed connection or detachable connection; mechanical connection or electrical connection; direct connection or indirect connection with an intermediate. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0043] Figure 1 This is a schematic structural diagram of a vertical heat exchange device for clay cooling according to an embodiment of the present application. Figure 2 for Figure 1 A view of the vertical heat exchange equipment for clay cooling shown in FIG. Figure 1 and Figure 2 As shown, the vertical heat exchange device includes a shell, a top perforated plate 141 , a bottom perforated plate 142 , a plurality of blanking steel pipes 200 , a baffle assembly and an S-shaped cooling channel 400 .

[0044] The shell has a deformation portion that can be extended and retracted along its axial direction, the top of the shell has a feed port 131, the bottom of the shell has a discharge port 132, the side wall of the shell has a cooling medium inlet 133 and a hot air outlet 134, the hot air outlet 134 is located at one end of the shell close to the feed port 131, and the cooling medium inlet 133 is located at one end of the shell close to the discharge port 132. The top orifice plate 141 and the bottom orifice plate 142 are both located in the shell, and the top orifice plate 141 and the bottom orifice plate 142 each have a plurality of through holes, the top orifice plate 141 and the bottom orifice plate 142 are parallel to each other, and the top orifice plate 141 is located between the hot air outlet 134 and the feed port 131, and the bottom orifice plate 142 is located between the cooling medium inlet 133 and the discharge port 132. A plurality of blanking steel pipes 200 are located in the shell, and both ends of each blanking steel pipe 200 are connected to the corresponding through holes on the top orifice plate 141 and the corresponding through holes on the bottom orifice plate 142, respectively. The baffle assembly includes a plurality of first air guide baffles 310 and a plurality of second air guide baffles 320, and the plurality of first air guide baffles 310 and the plurality of second air guide baffles 320 are both located in the shell, and the plurality of first air guide baffles 310 and the plurality of second air guide baffles 320 are both located between the top orifice plate 141 and the bottom orifice plate 142, and the plurality of first air guide baffles 310 and the plurality of second air guide baffles 320 are spaced and staggered in the axial direction of the shell, and each of the first air guide baffles 310 and the second air guide baffles 320 are spaced and staggered in the axial direction of the shell. 0 and each of the second air guide baffles 320 are provided with a through hole for the blanking steel pipe 200 to pass through, the first air guide baffle 310 extends horizontally from the first side wall of the shell toward the second side wall opposite to the first side wall, the second air guide baffle 320 extends horizontally from the second side wall of the shell toward the first side wall, and there is a first gap between the end of the first air guide baffle 310 and the second side wall, and there is a second gap between the end of the second air guide baffle 320 and the first side wall. The two ends of the S-shaped cooling channel 400 are respectively connected to the cooling medium inlet 133 and the hot air outlet 134, and the S-shaped cooling channel includes the first gap, the second gap, and the third gap between two adjacent air guide baffles.

[0045] In the above embodiment, the top orifice plate 141, the bottom orifice plate 142, the plurality of blanking steel pipes 200, the baffle assembly and the S-shaped cooling channel 400 are all located in the shell, that is, the high-temperature clay reaching a temperature of 700-900°C after calcination in the preheater flows from the bottom outlet of the preheater into the feed port 131 of the shell, and the high-temperature clay flows from top to bottom through the plurality of blanking steel pipes 200 to the discharge port at the bottom of the shell, and at the same time, the cooling medium in the S-shaped cooling channel 400 flows from bottom to top outside the blanking steel pipes, and performs heat exchange with the calcined clay inside the blanking steel pipes 200, and the hot air after heat exchange is output from the hot air outlet 134, thereby cooling the high-temperature clay to below 300 degrees. The vertical heat exchange device can use air as the cooling medium, the cooling medium is convenient to source and the cost is low, and the heated air output from the hot air outlet 134 can be further utilized, thereby avoiding the heat loss caused by passing through the intermediate medium and improving the utilization rate of the heat of the calcined clay. In this embodiment, the S-shaped cooling channel includes the first gap, the second gap and the third gap between two adjacent air guide baffles. Figure 1 As shown, the cooling medium flows along the black S-shaped channel. In this embodiment, the gaps between the first air guide baffle and the second air guide baffle are both the third gap. In some embodiments, the S-shaped cooling channel may also include a fourth gap and a fifth gap. The fourth gap may be the gap between the topmost first air guide baffle and the top perforated plate, and the fifth gap may be the gap between the bottommost second air guide baffle and the bottom perforated plate; that is, in this embodiment, the S-shaped cooling channel is formed by the first gap, the second gap, the third gap, the fourth gap, and the fifth gap.

[0046] In addition, when the high-temperature clay flows from top to bottom through the blanking steel pipe 200, the blanking steel pipe 200 will stretch due to thermal expansion and contraction. At this time, since the two ends of the blanking steel pipe 200 are respectively fixed to the top orifice plate 141 and the bottom orifice plate 142, and the shell has a deformation portion that can be expanded and contracted along the axial direction of the shell, the deformation portion of the shell will deform as the blanking steel pipe 200 stretches. At this time, the deformation portion of the shell compensates for the deformation of the blanking steel pipe 200, thereby avoiding the bending of the blanking steel pipe 200 due to thermal expansion and elongation, and avoiding affecting the connection sealing between the blanking steel pipe and the top orifice plate or the bottom orifice plate, thereby ensuring the flow stability of the clay in the blanking steel pipe 200. Correspondingly, when the blanking steel pipe 200 shrinks in length due to the release of heat, the deformed portion of the shell will shrink along with the shrinkage of the blanking steel pipe 200, thereby avoiding the connection between the blanking steel pipe 200 and the top orifice plate 141 and the bottom orifice plate 142 from being unable to seal due to the deformation of the blanking steel pipe 200, thereby improving the heat exchange efficiency of the vertical heat exchange equipment and avoiding damage to the vertical heat exchange equipment, thereby extending the service life of the vertical heat exchange equipment.

[0047] Furthermore, the shell includes an upper shell 110 and a lower shell 120 that are detachably connected, the deformation portion is located on the lower shell 120, and the bottom end of the upper shell 110 has a support ring seat 111 for supporting the vertical heat exchange device. Figure 1 It can be seen that the support ring seat 111 is specifically located at the bottom end of the upper shell 110, and the support ring seat 111 plays the role of supporting the vertical heat exchange equipment. The deformation part is specifically located at the top end of the lower shell 120. In this embodiment, the top orifice plate 141 is fixedly connected to the side wall of the upper shell 110, and the bottom orifice plate 142 is fixedly connected to the side wall of the lower shell 120, that is, the top orifice plate 141 is specifically located at the top end of the upper shell 110, and the bottom orifice plate 142 is specifically located at the bottom end of the lower shell 120. Since the support ring seat 111 on the upper shell 110 supports the entire vertical heat exchange equipment, when the blanking steel pipe 200 is extended or shortened due to thermal expansion and contraction, the deformation part of the lower shell 120 will be deformed at this time, that is, the lower shell 120 is also extended or shortened, so that the shell and the blanking steel pipe 200 are deformed in the same manner. It can be understood that the embodiment in which the deformation part is arranged on the lower shell 120 is only an example. In some other embodiments, the deformation part can also be arranged on the upper shell 110, as long as the lower shell 120 is fixed at this time.

[0048] In addition, when the deformation portion is located on the lower shell 120, since the deformation of the lower shell 120 is generated by the blanking steel pipe 200 lifting the bottom orifice plate 142 or pulling the bottom orifice plate 142, the connection stability between the blanking steel pipe 200 and the top orifice plate 141 and the bottom orifice plate 142 should be ensured. In addition, in order to improve the pressure stability during the material falling process, the sealing of the connection position between the blanking steel pipe 200 and the top orifice plate 141 and the bottom orifice plate 142 should also be ensured. For example, Figure 7a and Figure 7b As shown, the blanking steel pipe 200 and the top orifice plate 141 and the bottom orifice plate 142 are all welded and sealed; it can be understood that the sealing method between the blanking steel pipe 200 and the top orifice plate 141 and the bottom orifice plate 142 listed in this embodiment is only an example, and in other embodiments, other types of sealing methods can also be used.

[0049] In one embodiment, the deformation portion includes a flexible shell segment 121 and an elastic component arranged on the periphery of the flexible shell segment 121, and the elastic component is synchronously compressed and released with the telescopic movement of the flexible shell segment. Exemplarily, the ratio of the length of the flexible shell segment to the total length of the lower shell 120 can range from 1:8 to 1:3. The flexible shell segment can be specifically implemented by a flexible material. The flexible shell segment adaptively deforms based on the length change of the blanking steel pipe 200, so that the total length of the shell and the length of the blanking steel pipe 200 are mutually adapted, and the sealing of the connection position between the blanking steel pipe and the top orifice plate 141 and the bottom orifice plate 142 can be ensured when the length of the blanking steel pipe 200 changes. The flexible shell segment can be specifically implemented by a deformable steel pipe.

[0050] Furthermore, the elastic component includes a first spring 122 and a second spring 123, and an upper fixing plate 124 and a lower fixing plate 125 are respectively provided on the top periphery and the bottom periphery of the flexible shell segment 121, the first spring 122 is located between the upper fixing plate 124 and the lower fixing plate 125, and the second spring 123 is located on the top of the upper fixing plate 124. Figure 1 As shown, the upper fixing plate 124 and the lower fixing plate 125 are respectively fixed on the lower shell 120, and the upper fixing plate 124 and the lower fixing plate 125 are respectively located at the top and the bottom of the flexible section; in this embodiment, when the flexible section is deformed, the first spring 122 is compressed or released, and one end of the second spring 123 abuts against the top end of the upper fixing plate 124, and the other end of the second spring 123 is provided with a nut, and the preload force of the second spring 123 can be adjusted by tightening or loosening the nut.

[0051] In some embodiments of the present invention, the vertical heat exchange equipment includes a material distribution device, which includes a rotating drive component 510 and a material distribution plate 520. The rotating drive component 510 is arranged above the top side wall of the shell, and the material distribution plate 520 is located in the shell, and the material distribution plate 520 is located at the bottom of the feed port 131. The material distribution plate 520 is connected to the output end of the rotating drive component 510 so that the rotating drive component 510 drives the material distribution plate 520 to rotate. Figure 4 FIG. 1 is a partial schematic diagram of a material distribution device of a vertical heat exchange device for cooling clay according to an embodiment of the present invention. Figure 4As shown, the rotary drive component 510 is fixed on the top of the upper shell 110, and the material distribution plate 520 is located inside the upper shell 110, and there is a certain distance between the material distribution plate 520 and the top side wall of the upper shell 110. In this embodiment, the rotary drive component 510 drives the material distribution plate 520 to rotate, and the high-temperature clay input from the feed port 131 is broken up by the rotating material distribution plate 520, and the broken high-temperature clay particles are evenly dropped into multiple blanking steel pipes. In addition, the material distribution device can also ensure that the material height above each blanking steel pipe 200 is the same, thereby ensuring the material pressure stability in the vertical heat exchange equipment and ensuring the consistency of the extension or contraction of each blanking steel pipe 200. Exemplarily, the rotating drive component 510 may be a motor, in which case the output shaft of the motor may extend directly from the top of the upper shell 110 to the interior of the upper shell 110, and the output shaft of the motor is connected to the material distribution plate 520; in addition, a mechanical transmission component may be provided between the motor and the material distribution plate 520, such as a gear transmission mechanism. In this case, the driving gear is fixedly connected to the output shaft of the motor, and the driven gear is fixedly connected to the central axis of the material distribution plate 520, so that the driving gear and the driven gear are meshed with each other, so that the rotating drive component 510 drives the material distribution plate 520 to rotate.

[0052] Furthermore, the material distribution plate 520 includes an outer ring housing 521, a plurality of partitions 522 and a shaft 523, wherein the plurality of partitions 522 are arranged along the radial direction of the outer ring housing 521, and the middle surface of each partition 522 coincides with the central axis of the outer ring housing 521, and the shaft 523 is located on one side of the outer ring housing 521, and the axis of the shaft 523 is colinear with the central axis of the outer ring housing 521. Figure 5 As shown, the outer ring shell 521 can be specifically circular, and the number of the partitions 522 is four. At this time, the four partitions 522 are arranged along the radial direction of the outer ring shell 521, and the four partitions 522 are staggered, and the symmetric center plane of each partition 522 intersects with the axis of the outer ring shell 521. At this time, the four partitions 522 divide the outer ring shell 521 into 8 fan-shaped slots. When the material-distributing disk 520 rotates, the partitions 522 are used to break up the calcined clay input from the feed port 131, and the broken up calcined clay further falls from the fan-shaped slots between the partitions 522 into the blanking steel pipe 200 located below the material-distributing disk 520. In this embodiment, the shaft 523 of the material-distributing disk 520 is used to connect with the output end of the rotating drive component 510. At this time, the shaft 523 is specifically located at the center of the outer ring shell 521, and the shaft 523 is coaxial with the outer ring shell 521.

[0053] In order to further improve the flow stability of the material in the blanking steel pipe 200, the vertical heat exchange device further includes a filter screen 600, which is located in the shell and between the material balancing plate 520 and the top perforated plate 141. Figure 1 The filter screen 600 is specifically located below the material balancing plate 520. The filter screen 600 is used to filter the larger calcined clay that is further dispersed by the material balancing plate 520 to prevent the larger calcined clay from clogging the blanking steel pipe 200. When the upper shell 110 is a cylindrical shell, the filter screen 600 can be specifically a circular filter screen 600, which is fixedly connected to the inner side wall of the upper shell 110.

[0054] In some embodiments of the present invention, the vertical heat exchange equipment includes a pressure equalizing module, which is located between the bottom orifice plate 142 and the discharge port 132, and includes a plurality of conical equalizing rings, each of which has a top open portion and a bottom open portion, and the plurality of conical equalizing rings are nested in sequence, and the side walls of two adjacent conical equalizing rings are fixedly connected, and the sizes of the top open portions of the plurality of conical equalizing rings increase from the inside to the outside, and the bottom open portions of two adjacent conical equalizing rings are spaced apart by a distance. The pressure equalizing module is used to reduce the blanking pressure difference of the material in each blanking steel pipe 200, ensure the consistency of the reaction force of the material, improve the flow rate uniformity of the material in the blanking steel pipe 200, and improve the heat exchange effect of calcined clay.

[0055] Figure 6 FIG. 1 is a schematic diagram of the internal structure of a pressure equalizing module of a vertical heat exchange device for clay cooling according to an embodiment of the present application. Figure 6 As shown, the pressure equalizing ring may include three conical equalizing rings, which may be referred to as the first conical equalizing ring 710, the second conical equalizing ring 720 and the third conical equalizing ring 730 from the inside to the outside, and the bottom open parts of the three equalizing rings increase in size in sequence, the side wall of the first conical equalizing ring 710 is fixedly connected to the side wall of the second conical equalizing ring 720, the side wall of the second conical equalizing ring 720 is fixedly connected to the side wall of the third conical equalizing ring 730, and the side walls of the two fixedly connected conical equalizing rings can allow the material to flow from the blanking steel pipe 200 to the discharge port 132. In this embodiment, the top open parts of the second tapered material balancing ring 720 and the third tapered material balancing ring 730 are flush, and the top open part of the first tapered material balancing ring 710 is higher than the top open parts of the second tapered material balancing ring 720 and the third tapered material balancing ring 730. In addition, the top open parts of the first tapered material balancing ring 710, the second tapered material balancing ring 720 and the third tapered material balancing ring 730 can also be set to a gradually lowered structure. It can be understood that the use of three tapered material balancing rings in this embodiment is only an example, and in other embodiments, more tapered material balancing rings can also be used.

[0056] Furthermore, the vertical heat exchange device includes a rotary discharge valve 800, and the rotary discharge valve 800 is arranged below the discharge port 132. Figure 6As shown, the inlet of the rotary discharge valve 800 is connected to the discharge port 132 at the bottom of the shell. The rotary discharge valve 800 is used to control the speed of the material flowing through the blanking steel pipe 200, ensuring that all steel pipes are always filled with materials, and the material flows slowly and evenly downward in the blanking steel pipe.

[0057] In some other embodiments, the figure formed by the midpoints of the three adjacent through holes on the top orifice plate 141 and the bottom orifice plate 142 is an equilateral triangle, such as Figure 3 As shown, the cross-sectional shape of the shell is circular, and the lines connecting the centers of the cross-sectional shapes of the three adjacent blanking steel tubes 200 also form an equilateral triangle. It can be understood that the centers of the cross-sectional shapes of the three adjacent blanking steel tubes 200 are not on a straight line.

[0058] In addition, when the blanking steel pipe 200 is extended or contracted, in order to ensure that the blanking steel pipe 200 can move relative to the air guide baffle, the blanking steel pipe 200 and the through hole on the air guide baffle are clearance-matched (refer to Figure 8 ). In addition, the vertical heat exchange equipment may also be provided with an upper limit 911 and a lower limit 912 of the material level, such as Figure 1 As shown, the material level upper limit 911 and the material level lower limit 912 are respectively located above the material plate 520 and below the filter 600. When the material level in the vertical heat exchange equipment is higher than the material level upper limit 911, the material supply to the vertical heat exchange equipment is stopped. When the material level in the vertical heat exchange equipment is lower than the material level lower limit 912, the material supply is insufficient at this time, and the material supply to the vertical heat exchange equipment continues. In addition, a material level sensor 913 is also provided above the discharge port 132. At this time, the rotary discharge valve 800 is used to control the discharge speed based on the material level detected by the material level sensor 913. In addition to the above, the vertical heat exchange equipment also includes a plurality of temperature sensors, the first temperature sensor 921 is used to measure the cold air temperature of the cooling medium inlet 133, the second temperature sensor 922 is used to monitor the hot air temperature of the hot air outlet 134, the third temperature sensor 923 is used to monitor the material feed temperature, and the fourth temperature sensor 924 is used to monitor the discharge temperature.

[0059] When the vertical heat exchange equipment of the present application cools down the calcined clay, high-temperature clay particles smaller than 90um flow from the external preheater outlet into the feed port at the top of the vertical heat exchange equipment, and further fall onto the equalizing plate; at this time, the rotary drive component drives the equalizing plate to rotate to break up the calcined clay input from the feed port, and the broken clay particles are filtered through the filter screen below the equalizing plate, and the filtered clay particles flow downward at a constant speed through each blanking steel pipe; at the same time, the cold air flowing in the S-shaped cooling channel exchanges heat with the material in the blanking steel pipe, and the heated hot air is discharged from the hot air outlet. Among them, the upper limit and lower limit of the material level are respectively used to control the highest height and the lowest height of the clay to be cooled on the upper part of the blanking steel pipe, ensuring that the height of the clay to be cooled on the upper part of all blanking steel pipes is similar, so as to form a stable material pressure inside the equipment; the pressure equalizing module is used to make the material resistance in each blanking steel pipe equal, so as to make the material downstream speed in each blanking steel pipe equal, thereby ensuring balanced heat exchange.

[0060] Through the above embodiments, it can be found that the vertical heat exchange equipment for clay cooling of the present application not only improves the material pressure stability in the clay cooling equipment and improves the cooling efficiency of the calcined clay, but also avoids the occurrence of equipment failure caused by thermal expansion and contraction of the blanking steel pipe in the vertical heat exchange equipment, thereby extending the service life of the equipment.

[0061] In the present invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may be modified and changed in various ways. For example, the system disclosed in the present application is a two-stage series waste heat recovery device. In some other embodiments, it may also be changed to a three-stage or more series waste heat recovery device. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertical heat exchange device for cooling clay, characterized in that: The vertical heat exchange equipment comprises: A shell, wherein the shell has a deformation portion that can be extended and retracted along its axial direction, the top of the shell has a feed port, the bottom of the shell has a discharge port, and the side wall of the shell has a cooling medium inlet and a hot air outlet, the hot air outlet is located at one end of the shell close to the feed port, and the cooling medium inlet is located at one end of the shell close to the discharge port; A top orifice plate and a bottom orifice plate are both located in the shell, and each of the top orifice plate and the bottom orifice plate has a plurality of through holes, the top orifice plate and the bottom orifice plate are parallel to each other, and the top orifice plate is located between the hot air outlet and the feed port, and the bottom orifice plate is located between the cooling medium inlet and the discharge port; A plurality of blanking steel pipes are located in the shell, and two ends of each blanking steel pipe are respectively connected to a corresponding through hole on the top orifice plate and a corresponding through hole on the bottom orifice plate; A baffle assembly, comprising a plurality of first air guide baffles and a plurality of second air guide baffles, wherein the plurality of first air guide baffles and the plurality of second air guide baffles are all located between the top orifice plate and the bottom orifice plate, the plurality of first air guide baffles and the plurality of second air guide baffles are spaced and staggered in the axial direction of the shell, each of the first air guide baffles and each of the second air guide baffles is provided with a through hole for the blanking steel pipe to pass through, the first air guide baffle extends horizontally from the first side wall of the shell toward the second side wall opposite to the first side wall, the second air guide baffle extends horizontally from the second side wall of the shell toward the first side wall, and a first gap is provided between the end of the first air guide baffle and the second side wall, and a second gap is provided between the end of the second air guide baffle and the first side wall; The two ends of the S-shaped cooling channel are respectively connected to the cooling medium inlet and the hot air outlet. The S-shaped cooling channel includes the first gap, the second gap and the third gap between two adjacent air guide partitions.

2. The vertical heat exchange equipment for clay cooling according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell which are detachably connected, the deformation portion is located on the lower shell, and the bottom end of the upper shell has a supporting ring seat for supporting the vertical heat exchange device.

3. The vertical heat exchange equipment for clay cooling according to claim 2, characterized in that: The deformation portion includes a flexible shell segment and an elastic component arranged on the outer periphery of the flexible shell segment, and the elastic component is synchronously compressed and released with the telescopic movement of the flexible shell segment.

4. The vertical heat exchange equipment for clay cooling according to claim 3, characterized in that: The elastic component includes a first spring and a second spring. The top periphery and the bottom periphery of the flexible shell segment are respectively provided with an upper fixing plate and a lower fixing plate. The first spring is located between the upper fixing plate and the lower fixing plate, and the second spring is located on the top of the upper fixing plate.

5. The vertical heat exchange equipment for clay cooling according to claim 1, characterized in that: The vertical heat exchange equipment includes a material distribution device, which includes a rotating drive component and a material distribution plate. The rotating drive component is arranged above the top side wall of the shell, the material distribution plate is located in the shell, and the material distribution plate is located at the bottom of the feed port. The material distribution plate is connected to the output end of the rotating drive component so that the rotating drive component drives the material distribution plate to rotate.

6. The vertical heat exchange equipment for clay cooling according to claim 5, characterized in that: The material distribution plate includes an outer ring shell, a plurality of partitions and a shaft body, wherein the plurality of partitions are arranged along the radial direction of the outer ring shell, and the mid-surface of each partition coincides with the central axis of the outer ring shell, the shaft body is located on one side of the outer ring shell, and the axis of the shaft body is colinear with the central axis of the outer ring shell.

7. The vertical heat exchange equipment for clay cooling according to claim 6, characterized in that: The vertical heat exchange equipment further includes a filter screen, which is located in the shell and between the material balancing pan and the top perforated plate.

8. The vertical heat exchange equipment for clay cooling according to claim 1, characterized in that: The vertical heat exchange equipment includes a pressure equalizing module, which is located between the bottom orifice plate and the discharge port. The pressure equalizing module includes a plurality of conical equalizing rings, each of which has a top open portion and a bottom open portion. The plurality of conical equalizing rings are nested in sequence, and the side walls of two adjacent conical equalizing rings are fixedly connected. The sizes of the top open portions of the plurality of conical equalizing rings increase from the inside to the outside, and there is a distance between the bottom open portions of two adjacent conical equalizing rings.

9. The vertical heat exchange equipment for cooling clay according to claim 8, characterized in that: The vertical heat exchange equipment comprises a rotary discharge valve, and the rotary discharge valve is arranged below the discharge port.

10. The vertical heat exchange equipment for cooling clay according to any one of claims 1 to 9, characterized in that: The figure formed by the connecting lines of the midpoints of the three adjacent through holes on the top orifice plate and the bottom orifice plate is an equilateral triangle; and / or, the blanking steel pipe is welded and sealed with the top orifice plate and the bottom orifice plate.

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