A kiln cooling device

Abstract

This invention relates to the field of glass forming and discloses a kiln cooling device, comprising a kiln body and an air supply assembly. The outer wall of the kiln body is provided with air inlet nozzles, each nozzle comprising an inlet section, a narrowing section, a throat section, and an expansion section arranged sequentially along the direction close to the outer side of the kiln body. The inner diameter of the narrowing section decreases towards the throat section, while the inner diameter of the expansion section increases away from the throat section. The outer side of the air inlet nozzle corresponds to the air inlet of the throat section. The expansion section is connected to an air outlet, and the outer side of the air outlet has an air outlet connected to the expansion section. The air outlet of the air outlet corresponds to the outer wall of the kiln body. Multiple air inlet nozzles are spaced apart along the length of the kiln body. The air supply assembly includes a fan and an air duct. The air duct is connected to the air outlet of the fan and is interconnected with multiple inlet sections. This invention improves cooling efficiency and reduces interference with the thermal field inside the kiln, thus better ensuring the operational stability of the kiln.

Description

Technical Field

[0001] This invention relates to the field of glass forming and discloses a kiln cooling device. Background Technology

[0002] In glass melting furnaces and other high-temperature industrial kilns, the wall bricks are in direct contact with the high-temperature molten material and are subjected to long-term thermal shock, chemical erosion, and mechanical scouring, making them a critical weak point in the kiln's lifespan. To ensure the wall bricks maintain structural strength and slow down the erosion rate under high-temperature conditions, forced cooling is essential. Currently, the industry commonly uses high-pressure gas directly blown onto the outer surface of the wall bricks through nozzles, utilizing the convection of the high-speed airflow to dissipate heat. However, this high-pressure air cooling method relies on high-power air compressors, resulting in extremely high energy consumption and heavy long-term operating costs. Secondly, because the nozzle spacing and airflow direction are difficult to precisely match the brick surface temperature distribution, localized overcooling or cooling blind zones can easily form, leading to uneven temperature gradients in the bricks and accelerating the formation of thermal stress cracks. Furthermore, after impacting the brick surface, the high-speed airflow undergoes irregular reflection and diffusion, with some cold air seeping into the kiln through brick seams or observation holes, interfering with the original thermal regime and flame atmosphere, affecting melt quality and energy consumption. Therefore, a device with better kiln cooling performance is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a kiln cooling device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] A kiln cooling device according to a first aspect of the present invention includes: The kiln body has air inlet nozzles on its outer wall. Each air inlet nozzle includes an inlet section, a narrowing section, a throat section, and an expansion section arranged sequentially along the outer side of the kiln body. The inner diameter of the narrowing section decreases towards the throat section, and the inner diameter of the expansion section increases away from the throat section. The outer side of the air inlet nozzle corresponds to the air inlet of the throat section. The expansion section is connected to an air outlet, and the outer side of the air outlet has an air outlet connected to the expansion section. The air outlet of the air outlet corresponds to the outer wall of the kiln body. Multiple air inlet nozzles are spaced apart along the length of the kiln body. An air supply assembly includes a fan and an air duct, wherein the air duct is connected to the air outlet of the fan and is interconnected with multiple access sections.

[0005] This technical solution has at least the following beneficial effects: When the fan is working, air enters the induced draft nozzle through the inlet section. Because the inner diameter of the narrowing section decreases towards the throat section, the air accelerates in the narrowing section and forms a high-speed, low-pressure zone at the throat section. At this time, ambient air can be automatically drawn in through the inlet, mixed with compressed air, and then enters the expansion section. Because the inner diameter of the expansion section increases away from the throat section, the air inside the expansion section diffuses and mixes, and finally, it is evenly blown onto the surface of the pool wall bricks through the outlet. Multiple induced draft nozzles are arranged at intervals along the length of the kiln, in coordination with... The directional airflow from the exhaust nozzles achieves uniform cooling of the brick surface, which helps prevent localized overcooling or blind spots. By directly introducing a large amount of ambient air through the exhaust nozzles, the power requirement of the fan can be reduced, and the high-temperature boundary layer gas on the surface of the pool wall bricks can be fully disturbed, improving the cooling efficiency. In addition, the air inlets on the outside of the exhaust nozzles and the air outlets of the exhaust nozzles draw air from the sides of the pool wall bricks, preventing the formation of strong jets that enter the kiln, thereby reducing interference with the thermal field inside the kiln and better ensuring the operational stability of the kiln.

[0006] According to some embodiments of the present invention, an airflow channel is formed inside the air outlet, the airflow channel is connected between the expansion section and the air outlet, the air outlet extends along the length direction of the kiln body, the inner diameter of the airflow channel narrows towards the air outlet, the side wall of the kiln body where the air inlet is provided is the cooling side, one of the air outlet and the air inlet faces upward and corresponds to the cooling side, and the other of the air outlet and the air inlet faces downward and corresponds to the cooling side.

[0007] According to some embodiments of the present invention, the two outer sides of the kiln body are respectively the cooling sides, and the two cooling sides are respectively provided with a plurality of air inlet nozzles at intervals along the length direction of the kiln body.

[0008] According to some embodiments of the present invention, in one cooling side, a plurality of air outlets are arranged facing upwards and a plurality of air inlets are arranged facing downwards; in another cooling side, a plurality of air outlets are arranged facing downwards and a plurality of air inlets are arranged facing upwards.

[0009] According to some embodiments of the present invention, a filter box is provided on the outer side of the throat section corresponding to the position of the air inlet. The filter box includes an outer box body, an inner box body, and an air guide tube. The inner box body is located inside the outer box body. The bottom end of the air guide tube is connected to the air inlet. The air guide tube extends from the bottom side of the outer box body into the inner box body. A filter screen is provided on the bottom side of the inner box body at a position outside the air guide tube. A dust collection chamber is provided on the outer box body below the filter screen. An air inlet hole is provided on the top or bottom side of the outer box body. The air inlet hole and the filter screen are staggered in the vertical direction.

[0010] According to some embodiments of the present invention, an air inlet groove is provided on the top or bottom side of the outer box body, the air inlet groove is connected to the outer side wall of the kiln body, and a plurality of air inlet holes are provided on the outer side of the air inlet groove.

[0011] According to some embodiments of the present invention, the filter screens are respectively provided on both sides of the air guide tube, and the air inlet grooves are respectively provided on both sides of the outer casing.

[0012] According to some embodiments of the present invention, the air inlet groove extends to the top or bottom side of the kiln body.

[0013] According to some embodiments of the present invention, the flow area of ​​the air inlet groove gradually decreases in the direction toward the outer casing.

[0014] According to some embodiments of the present invention, the dust collection bin is detachably connected to the outer casing.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is an overall front view of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the air intake nozzle and air outlet of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal structure of the filter box and air inlet slot of the present invention. The arrows in the diagram indicate the airflow direction.

[0020] In the attached diagram: 100-kiln body, 200-air inlet nozzle, 210-inlet section, 220-narrowing section, 230-throat section, 240-expansion section, 300-air outlet, 310-air outlet, 320-airflow channel, 410-fan, 420-air duct, 500-filter box, 510-outer box, 520-inner box, 530-air guide pipe, 540-filter screen, 550-dust collection bin, 560-air inlet slot, 561-air inlet hole. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Reference Figure 1 and Figure 2 According to a first aspect of the present invention, a kiln cooling device includes a kiln body 100 and an air supply assembly. An air intake nozzle 200 is provided on the outer wall of the kiln body 100. The air intake nozzle 200 includes an inlet section 210, a narrowing section 220, a throat section 230, and an expansion section 240 arranged sequentially along a direction close to the outer side of the kiln body 100. The inner diameter of the narrowing section 220 decreases towards the throat section 230, and the inner diameter of the expansion section 240 increases away from the throat section 230. The outer side of the air intake nozzle 200 corresponds to the air inlet of the throat section 230, and the expansion section 240 is connected to an air outlet 300. An air outlet 310 connected to the expansion section 240 is provided on the outer side of the air outlet 300. The air outlet 310 of the air outlet 300 corresponds to the outer side wall of the kiln body 100. Multiple air inlet nozzles 200 are arranged at intervals along the length of the kiln body 100. The air supply assembly includes a fan 410 and an air duct 420. The air duct 420 is connected to the air outlet end of the fan 410. The air duct 420 is interconnected with multiple access sections 210. It can be understood that the air duct 420 and the multiple access sections 210 are respectively connected by a pipeline for ventilation, thereby realizing the diversion of the airflow blown into the air duct 420 to multiple air inlet nozzles 200.

[0028] As described above, when the blower 410 is working, air enters the induced draft nozzle 200 through the inlet section 210. Because the inner diameter of the narrowing section 220 decreases towards the throat section 230, the air accelerates in the narrowing section 220 and forms a high-speed, low-pressure zone in the throat section 230. At this time, ambient air can be automatically drawn in through the inlet, mixed with the compressed air, and then enters the expansion section 240. Because the inner diameter of the expansion section 240 increases away from the throat section 230, the air inside the expansion section 240 diffuses and mixes, and finally, it is evenly blown onto the surface of the pool wall bricks through the outlet 310. Multiple induced draft nozzles 200 are arranged at intervals along the length of the kiln. With the directional airflow from the exhaust nozzle 300, uniform cooling of the brick surface is achieved, which helps prevent local overcooling or blind spots. In this way, by directly introducing a large amount of ambient air into the exhaust nozzle 200 through the fan 410, the power requirement of the fan 410 can be reduced, and the high-temperature boundary layer gas on the surface of the pool wall bricks can be fully disturbed, thereby improving the cooling efficiency. In addition, the air inlet on the outside of the exhaust nozzle 200 and the air outlet 310 of the exhaust nozzle 300 draw air and blow air from the side of the pool wall bricks, without forming a strong jet that enters the kiln, thereby reducing interference with the thermal field inside the kiln and better ensuring the working stability of the kiln.

[0029] In order to blow the airflow more evenly onto the brick surface of the pool wall, in this embodiment, an airflow channel 320 is formed inside the air outlet 300. The airflow channel 320 connects the expansion section 240 and the air outlet 310. The air outlet 310 extends along the length of the kiln body 100. The inner diameter of the airflow channel 320 narrows towards the air outlet 310. The side wall of the kiln body 100 where the air inlet 200 is located is the cooling side. One of the air outlet 310 and the air inlet faces upward and corresponds to the cooling side, and the other of the air outlet 310 and the air inlet faces downward and corresponds to the cooling side. The internal space of the airflow channel 320 gradually narrows towards the air outlet 310, forming a converging nozzle. The air outlet 310 extends along the length of the kiln body 100, forming a long strip-shaped air outlet 310. The side wall of the kiln body 100 with the air inlet 200 is the cooling side. Both the air outlet 310 and the air inlet correspond to the cooling side, and they are arranged in opposite directions. This converging airflow channel 320 makes the air velocity uniform and the direction concentrated. The long strip-shaped air outlet 310 covers a wider cooling area along the length of the kiln. The air outlet 310 and the air inlet are arranged in opposite directions, so that the air is drawn in from the side away from the air outlet 310, making the airflow spread more evenly on the outside of the pool wall bricks in the vertical direction, thus improving the cooling efficiency.

[0030] To improve the cooling effect on the kiln body 100, in this embodiment, the two outer sides of the kiln body 100 are designated as cooling sides, and multiple air inlet nozzles 200 are spaced apart along the length of the kiln body 100 on each of the two cooling sides. When cooling of the kiln body 100 is required, the pool wall bricks can be cooled simultaneously and uniformly from both sides of the kiln, which improves the cooling effect on the kiln body 100, reduces the thermal stress caused by unilateral cooling, provides more comprehensive protection for the kiln structure, and extends the service life of the kiln body 100.

[0031] Furthermore, in one cooling side, among the multiple air intake nozzles 200, multiple air outlets 310 are arranged upwards and multiple air inlets are arranged downwards; in the other cooling side, among the multiple air intake nozzles 200, multiple air outlets 310 are arranged downwards and multiple air inlets are arranged upwards. The air intake and exhaust on both sides of the kiln body 100 are opposite. In one cooling side, the airflow flows upwards, while in the other cooling side, the airflow flows downwards. This facilitates the formation of a transverse airflow on the top side of the kiln body 100, promoting heat dissipation on the top side of the kiln body 100. For the airflow from the perforated section on the bottom side of the kiln body 100, the airflow can also flow transversely from the bottom side of the kiln body 100, promoting heat dissipation on the bottom side of the kiln body 100, further improving the heat dissipation effect on the kiln body 100.

[0032] The air inlet of the exhaust nozzle 200 is directly exposed to the kiln workshop environment, where the air contains dust and particulate matter. If these particles are drawn in, they may clog the throat section 230 or wear down the exhaust head 300, affecting the cooling effect and equipment lifespan. Therefore, in this embodiment, referring to... Figure 1 and 3 As shown, a filter box 500 is provided on the outer side of the throat section 230 corresponding to the air inlet. The filter box 500 includes an outer box body 510, an inner box body 520, and an air guide pipe 530. The inner box body 520 is located inside the outer box body 510. The bottom end of the air guide pipe 530 is connected to the air inlet. The air guide pipe 530 extends from the bottom side of the outer box body 510 into the inner box body 520. A filter screen 540 is provided on the bottom side of the inner box body 520 outside the air guide pipe 530. A dust collection chamber 550 is provided on the outer box body 510 below the filter screen 540. An air inlet 561 is provided on the top or bottom side of the outer box body 510. The air inlet 561 and the filter screen 540 are staggered in the vertical direction. Ambient air enters the outer casing 510 through the air inlet 561. Since the air inlet 561 and the filter screen 540 are staggered vertically, the airflow will be deflected horizontally before entering the filter screen 540. The filter screen 540 blocks debris and particulate dust, which will fall downward into the dust collection chamber 550. The filtered airflow then flows around the inner casing 520 into the air guide pipe 530 and enters the air nozzle 200 from the air guide pipe 530. This effectively blocks and collects external debris and dust, purifies the intake air, and reduces the risk of blockage in the throat section 230 and wear on the air outlet 300.

[0033] To facilitate airflow on the outer side of the kiln body 100, in this embodiment, an air inlet groove 560 is provided on the top or bottom side of the outer casing 510. The air inlet groove 560 is connected to the outer wall of the kiln body 100, and multiple air inlets 561 are provided on the outer side of the air inlet groove 560. During operation, airflow is drawn into the air inlet groove 560 from the multiple air inlets 561 along its path. This allows the air inlet groove 560 to be positioned according to cooling requirements, thereby enhancing the intake of high-temperature airflow. Furthermore, the dispersed arrangement of the multiple air inlets 561 increases the air intake area and reduces air intake resistance.

[0034] Furthermore, filter screens 540 are respectively provided on both sides of the air guide pipe 530, and air inlet slots 560 are respectively provided on both sides of the outer casing 510. Dual-sided air intake allows airflow to enter the inner casing 520 evenly from both sides, which helps to prevent flow deviation and excessive local filtration load caused by single-sided air intake, improves filtration efficiency and filter screen lifespan, increases the total air intake area, reduces pressure loss, and increases the range of airflow coverage in the kiln body 100.

[0035] In some embodiments, the air inlet groove 560 extends to the top or bottom side of the kiln body 100. The air inlet groove 560 forms an air intake at the top or bottom side of the kiln body 100, which can enhance the airflow at the top or bottom side of the kiln body 100, thereby further improving the cooling effect on the kiln body 100.

[0036] The frictional resistance along the air intake groove 560 may lead to insufficient air intake at the end. To better balance the flow rate of each air intake hole 561, in this embodiment, the flow area of ​​the air intake groove 560 gradually decreases towards the outer casing 510. The tapered structure causes the airflow velocity within the air intake groove 560 to increase along the flow path, resulting in a more uniform pressure distribution. This helps ensure the consistency of air intake volume at each air intake hole 561, better prevents insufficient air intake at the distal air intake hole 561, and improves the overall air intake uniformity of the air intake groove 560.

[0037] To facilitate cleaning of the dust collection chamber 550, in this embodiment, the dust collection chamber 550 is detachably connected to the outer casing 510. When cleaning and maintenance are required, the dust collection chamber 550 can be removed to empty the dust, reducing the difficulty and frequency of maintenance and helping to ensure the long-term effective operation of the filtration system.

[0038] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A furnace cooling device, characterized by: include: The kiln body (100) has an air intake nozzle (200) on its outer wall. The air intake nozzle (200) includes an inlet section (210), a narrowing section (220), a throat section (230), and an expansion section (240) arranged sequentially along the outer side of the kiln body (100). The inner diameter of the narrowing section (220) decreases towards the throat section (230), and the inner diameter of the expansion section (240) increases away from the throat section (230). The outer side of the air inlet of the throat section (230) corresponds to the air inlet of the air inlet section (230). The expansion section (240) is connected to the air outlet (300). The outer side of the air outlet (300) is provided with an air outlet (310) that communicates with the expansion section (240). The air outlet (310) of the air outlet (300) corresponds to the outer side wall of the kiln body (100). Multiple air inlets (200) are provided at intervals along the length direction of the kiln body (100). The air supply assembly includes a fan (410) and an air duct (420), the air duct (420) being connected to the air outlet of the fan (410), and the air duct (420) being interconnected with a plurality of access sections (210).

2. The kiln cooling device according to claim 1, characterized in that: An airflow channel (320) is formed inside the air outlet (300). The airflow channel (320) connects the expansion section (240) and the air outlet (310). The air outlet (310) extends along the length of the kiln body (100). The inner diameter of the airflow channel (320) narrows towards the air outlet (310). The side wall of the kiln body (100) where the air inlet (200) is located is the cooling side. One of the air outlet (310) and the air inlet faces upward and corresponds to the cooling side. The other of the air outlet (310) and the air inlet faces downward and corresponds to the cooling side.

3. The kiln cooling device according to claim 2, characterized in that: The two outer sides of the kiln body (100) are the cooling sides, and the two cooling sides are provided with a plurality of air inlet nozzles (200) at intervals along the length direction of the kiln body (100).

4. A kiln cooling device according to claim 3, characterized in that: In one cooling side, among the multiple air nozzles (200), the multiple air outlets (310) are arranged facing upwards and the multiple air inlets are arranged facing downwards; in another cooling side, among the multiple air nozzles (200), the multiple air outlets (310) are arranged facing downwards and the multiple air inlets are arranged facing upwards.

5. A kiln cooling device according to claim 1, characterized in that: A filter box (500) is provided on the outside of the throat section (230) corresponding to the air inlet. The filter box (500) includes an outer box body (510), an inner box body (520) and an air guide pipe (530). The inner box body (520) is located inside the outer box body (510). The bottom end of the air guide pipe (530) is connected to the air inlet. The air guide pipe (530) extends from the bottom side of the outer box body (510) into the inner box body (520). A filter screen (540) is provided on the bottom side of the inner box body (520) outside the air guide pipe (530). A dust collection chamber (550) is provided on the outer box body (510) below the filter screen (540). An air inlet hole (561) is provided on the top or bottom side of the outer box body (510). The air inlet hole (561) and the filter screen (540) are staggered in the vertical direction.

6. A kiln cooling device according to claim 5, characterized in that: An air inlet groove (560) is provided on the top or bottom side of the outer box body (510). The air inlet groove (560) is connected to the outer wall of the kiln body (100). A plurality of air inlet holes (561) are provided on the outer side of the air inlet groove (560).

7. A kiln cooling device according to claim 6, characterized in that: The air duct (530) is provided with filter screens (540) on both sides, and the outer box (510) is provided with air inlet slots (560) on both sides.

8. A kiln cooling device according to claim 6, characterized in that: The air inlet groove (560) extends to the top or bottom side of the kiln body (100).

9. A kiln cooling device according to claim 6, characterized in that: The flow area of ​​the air inlet groove (560) gradually decreases in the direction toward the outer casing (510).

10. A kiln cooling device according to claim 5, characterized in that: The dust collection chamber (550) is detachably connected to the outer casing (510).

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