Flexible sealed air inlet device

Abstract

The utility model relates to the technical field of cooler grid plate cooling, and discloses a flexible sealing air inlet device which comprises a sleeve, a first spherical bearing, a ventilation pipe, a spherical bearing sleeve, a second spherical bearing and an air inlet pipe. The upper end of the sleeve is detachably and fixedly connected to the lower side of the grid plate beam; the first spherical bearing is rotationally connected to the inner side of the lower end of the sleeve; the upper end and the lower end of the ventilation pipe are fixedly connected to the inner side of the first spherical bearing and the inner side of the upper end of the spherical bearing sleeve correspondingly. The inner side of the lower end of the spherical bearing sleeve is rotationally connected with the second spherical bearing; the inner side of the second spherical bearing is fixedly connected with the upper end of an air inlet pipe, and an air inlet is formed in the lower end of the air inlet pipe and connected with a fan. When the grid plate beam reciprocates back and forth, the flexible sealing air inlet device linearly or circularly moves along with the grid plate beam, and as the surface of the spherical bearing is a spherical body, the abrasion loss is small, and the problems of air leakage and incomplete cooling of materials caused by continuous movement of the grid plate beam and mutual abrasion between equipment are solved.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology for cooling machine grates, specifically to a flexible sealed air inlet device. Background Technology

[0002] In modern cement production, rapid cooling of high-temperature clinker is a crucial step in ensuring cement quality. To achieve rapid cooling of high-temperature clinker, existing systems employ walking beam clinker coolers. However, due to the segregation characteristics of rotary kiln feed, fine powder separates from coarse clinker, causing fine powder to accumulate on both sides of the grate, forming the so-called "red river" phenomenon. This phenomenon not only affects the uniform cooling of the clinker but may also lead to equipment damage and increased maintenance costs.

[0003] In existing technologies, to address the uneven cooling on both sides of the grate, separate air inlets are typically installed on each side. These air inlets generally employ rigid connections, meaning that the moving surfaces of each pair are in contact. However, due to the mobility of the grate beams, this rigid contact experiences significant wear during movement, leading to air leakage and consequently affecting the cooling effect. Furthermore, prolonged operation results in large wear gaps on the rigid contact friction surfaces, causing substantial cooling air leakage and reducing the airflow into the grate, ultimately impacting the clinker cooling performance. Utility Model Content

[0004] The purpose of this invention is to provide a flexible sealed air inlet device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a flexible sealed air inlet device, including a sleeve, a first spherical bearing, a ventilation pipe, a spherical bearing sleeve, a second spherical bearing, and an air inlet pipe; the upper end of the sleeve is detachably fixedly connected to the lower side of the grate beam; both the first and second spherical bearings are hollow spherical structures; the first spherical bearing is rotatably connected to the inner side of the lower end of the sleeve; the upper and lower ends of the ventilation pipe are respectively fixedly connected to the inner side of the first spherical bearing and the inner side of the upper end of the spherical bearing sleeve; the inner side of the lower end of the spherical bearing sleeve is rotatably connected to the second spherical bearing; the inner side of the second spherical bearing is fixedly connected to the upper end of the air inlet pipe, and the lower end of the air inlet pipe is provided with an air inlet, which is connected to a fan.

[0007] In one feasible implementation, the sleeve comprises, from top to bottom, a flange with several bolt holes and a straight cylinder; the flange is bolted to the lower side of the grate beam; and the inner wall of the straight cylinder is rotatably connected to the first spherical bearing.

[0008] In one feasible implementation, the length and shape of the straight cylinder can be adjusted and adapted to the space required for the spherical bearing to reciprocate linearly along the grate beam during actual operation.

[0009] In one feasible implementation, the ventilation duct is provided with annular steps at both ends, and the first spherical bearing and the spherical bearing sleeve are both installed on the annular steps. By setting the annular steps, the stability and reliability of the connection with the first spherical bearing and the spherical bearing sleeve can be improved.

[0010] In one feasible implementation, one end of the spherical bearing sleeve is a cylindrical section, and the other end is a flared sleeve opening. The cylindrical section is fixedly connected to the ventilation pipe. The flared sleeve opening fits against the outer circular surface of the second spherical bearing, ensuring that the second spherical bearing rotates within the flared sleeve opening.

[0011] In one feasible implementation, the upper end of the air inlet duct has a stepped structure, and the second spherical bearing is mounted on the stepped structure.

[0012] In one feasible implementation, the sleeve and the outer wall of the air inlet pipe are provided with clamps facing each other circumferentially.

[0013] In one feasible implementation, the clamp has a through hole for bolt connection, used for bolting with a temporary support.

[0014] In one feasible implementation, temporary supports are used for temporary support and need to be removed after installation.

[0015] In one feasible implementation, the first spherical bearing, the second spherical bearing, and the spherical bearing sleeve are all alloy steel components.

[0016] In one feasible approach, the hardness and strength of alloy steel can improve the load-bearing capacity of spherical bearings and reduce deformation or wear.

[0017] In one feasible implementation, the air inlet is provided with a flange plate that is fixedly connected to the fan.

[0018] In one feasible implementation, the air inlet duct is fixedly connected to an external high-pressure cooling fan via flange bolts.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This utility model provides a flexible sealing air inlet device. When the grate beam moves back and forth, the flexible sealing air inlet device can move in a straight line or in a circle along with the grate beam. The first spherical bearing and the second spherical bearing will always rotate within the sleeve and the spherical bearing sleeve. Since the surface of the spherical bearing is a spherical body, the wear is small. Due to the continuous movement of the grate beam, the mutual wear between the equipment will not cause air leakage or the material cannot be completely cooled. Attached Figure Description

[0021] Figure 1This is a structural schematic diagram of the flexible sealed air inlet device of this utility model;

[0022] Figure 2 This is a top view of the flexible sealing air inlet device of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the sleeve of the flexible sealing air inlet device of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first spherical bearing in the flexible sealed air inlet device of this utility model;

[0025] Figure 5 This is a schematic diagram of the ventilation pipe of the flexible sealed air inlet device of this utility model;

[0026] Figure 6 This is a schematic diagram of the spherical bearing sleeve of the flexible sealing air inlet device of this utility model;

[0027] Figure 7 This is a schematic diagram of the air inlet pipe of the flexible sealed air inlet device of this utility model;

[0028] Figure 8 This is a schematic diagram of the operating trajectory of the flexible sealing air inlet device of this utility model;

[0029] In the figure, 1-sleeve, 2-first spherical bearing, 3-ventilation pipe, 4-spherical bearing sleeve, 5-second spherical bearing, 6-air inlet pipe, 7-clamp, 8-temporary support, 11-flange, 12-straight cylinder, 31-annular step, 41-cylindrical section, 42-flange-shaped sleeve. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Example 1

[0033] Hot clinker is discharged from the kiln opening onto the grate. Conveyed by the grate, it spreads along the entire length of the grate, forming a material bed of a certain thickness. Cooling air is blown upwards from below the material bed, penetrating and diffusing to cool the hot clinker. Fine powder and coarse clinker partially separate in the kiln. The fine powder, due to the reciprocating motion of the grate, accumulates on both sides of the grate, resulting in high air resistance, low airflow, and poor clinker cooling. Prolonged lack of timely cooling leads to a long "red river" phenomenon on both sides of the grate. Therefore, it is necessary to address this "red river" phenomenon on both sides of the grate. Current technology typically uses separate air inlets on both sides for cooling. These inlets generally employ rigid connections (two opposing moving surfaces in contact), which cause significant wear and tear during grate beam movement, leading to air leakage.

[0034] To solve the above problems, such as Figures 1 to 2 As shown, this application provides a flexible sealed air inlet device, mainly including a sleeve 1, a first spherical bearing 2, a ventilation pipe 3, a spherical bearing sleeve 4, a second spherical bearing 5, an air inlet pipe 6, a clamp 7, and a temporary support 8. The upper end of the sleeve 1 is detachably and fixedly connected to the lower side of the grate beam; the first spherical bearing 2 is rotatably connected to the inner side of the lower end of the sleeve 1; the upper and lower ends of the ventilation pipe 3 are respectively fixedly connected to the inner side of the first spherical bearing 2 and the inner side of the upper end of the spherical bearing sleeve 4; the inner side of the lower end of the spherical bearing sleeve 4 is rotatably connected to the second spherical bearing 5; the upper end of the air inlet pipe 6 is fixedly connected to the inner side of the second spherical bearing 5, and the lower end of the air inlet pipe 6 is provided with an air inlet, which is connected to a fan.

[0035] The sleeve 1 and the air inlet pipe 6 are provided with clamps 7 on their outer walls in a circumferential direction. The clamps 7 have through holes for bolt connection and are used to fix them to the temporary bracket 8. The temporary bracket 8 is used to temporarily support the flexible sealed air inlet device and needs to be removed after installation.

[0036] like Figures 3 to 7 As shown, sleeve 1 is welded from steel plate. The upper section of sleeve 1 is a flange 11 with several bolt holes, which is a stepped hollow structure. It is bolted to the lower side of the grate beam through flange 11. The lower section of sleeve 1 is made into a circular straight cylinder 12. The inner wall of the straight cylinder 12 is rotatably connected to the first spherical bearing 2. The length and shape of the straight cylinder 12 can be adjusted and adapted to the space required for the spherical bearing to reciprocate linearly along the grate beam, thereby ensuring that the spherical shape of the first spherical bearing 2 always rotates within the circular straight cylinder 12, and air leakage is not likely to occur. The first spherical bearing 2 and the second spherical bearing 5 are both hollow spherical structures, cast from alloy steel, with the outer surface cast into a spherical shape and ventilation holes opened inside. Figure 4A schematic diagram of the structure of the first spherical bearing 2 is shown. The shape and structure of the second spherical bearing 5 are the same as those of the first spherical bearing 2. As the grate beam moves back and forth, the rotation trajectory of the spherical circle of the first spherical bearing 2 remains within the circular straight cylinder 12. The ventilation pipe 3 is a hollow pipe with a stepped structure at both ends, and annular steps 31 are provided at both ends. The first spherical bearing 2 and the spherical bearing sleeve 4 are both installed on the annular steps 31. The air inlet duct 6 is made of welded steel pipe with a stepped upper end, mainly used to connect the ventilation hole of the second spherical bearing 5. The spherical bearing sleeve 4 is made of alloy steel casting, with one end being a cylindrical section 41, which is fixedly connected to the ventilation duct 3, and the other end being a flared sleeve 42, which fits against the outer surface of the second spherical bearing 5, providing rotation space for the second spherical bearing 5 and ensuring that the second spherical bearing 5 rotates within the flared sleeve 42. The air inlet duct 6 is made of welded steel plate with a stepped upper end, which is used to connect the second spherical bearing 5. The lower end of the air inlet duct 6 is provided with an air inlet, which is equipped with a flange plate connected to the fan. The air inlet duct 6 is fixedly connected to the external high-pressure cooling fan by bolts to the flange plate.

[0037] like Figure 8 As shown, when the grate beam reciprocates, it drives the sleeve 1. The spherical trajectory of the outer surface of the first spherical bearing 2 rotates along the inner circular direction of the sleeve 1. The ventilation pipe 3 is fixedly connected to the first spherical bearing 2 and the spherical bearing sleeve 4 through a fit. The inner surface of the spherical bearing sleeve 4 can rotate along the spherical trajectory of the outer surface of the second spherical bearing 5. The air inlet pipe 6 is fixed to the spherical bearing through a fit. External high-pressure cooling air enters the grate beam through the air inlet pipe 6 in this device to cool the high-temperature materials.

[0038] The working principle of this utility model is as follows: This utility model adopts a flexible sealing air inlet device. When the grate beam moves back and forth, the flexible sealing air inlet device can move in a straight line or in a circle along with the grate beam. The upper and lower spherical bearings will always rotate within the upper and lower sleeves and the spherical bearing sleeve. Since the surface of the spherical bearing is a spherical body, the wear is small. The maximum stroke S is designed to far meet the stroke of the grate beam. Due to the continuous movement of the grate beam, the mutual wear between the equipment will not cause air leakage or the material cannot be completely cooled.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible sealed air inlet device, characterized in that, The system includes a sleeve, a first spherical bearing, a ventilation pipe, a spherical bearing sleeve, a second spherical bearing, and an air inlet pipe. The upper end of the sleeve is detachably and fixedly connected to the lower side of the grate beam. Both the first and second spherical bearings are hollow spherical structures. The first spherical bearing is rotatably connected to the inner side of the lower end of the sleeve. The upper and lower ends of the ventilation pipe are respectively fixedly connected to the inner side of the first spherical bearing and the inner side of the upper end of the spherical bearing sleeve. The inner side of the lower end of the spherical bearing sleeve is rotatably connected to the second spherical bearing. The upper end of the air inlet pipe is fixedly connected to the inner side of the second spherical bearing. The lower end of the air inlet pipe is provided with an air inlet, which is connected to a fan.

2. The flexible sealed air inlet device according to claim 1, characterized in that, The sleeve comprises, from top to bottom, a flange with several bolt holes and a straight cylinder; the flange is bolted to the lower side of the grate beam; the inner wall of the straight cylinder is rotatably connected to the first spherical bearing.

3. The flexible sealed air inlet device according to claim 1, characterized in that, The ventilation duct has annular steps at both ends, and the first spherical bearing and the spherical bearing sleeve are both installed on the annular steps.

4. The flexible sealed air inlet device according to claim 1, characterized in that, One end of the spherical bearing sleeve is a cylindrical section, and the other end is a flared sleeve opening. The cylindrical section is fixedly connected to the ventilation pipe; the flared sleeve opening is rotatably connected to the outer circular surface of the second spherical bearing.

5. The flexible sealed air inlet device according to claim 1, characterized in that, The upper end of the air inlet pipe has a stepped structure, and the second spherical bearing is mounted on the stepped structure.

6. The flexible sealed air inlet device according to claim 1, characterized in that, The sleeve and the outer wall of the air inlet pipe are circumferentially opposite each other and are provided with clamps. The clamps are provided with through holes for bolt connection and are used to fix them to the temporary support bolts.

7. The flexible sealed air inlet device according to claim 1, characterized in that, The first spherical bearing, the second spherical bearing, and the spherical bearing sleeve are all alloy steel parts.

8. The flexible sealed air inlet device according to claim 1, characterized in that, The air inlet is equipped with a flange that is fixedly connected to the fan.

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