Roller kiln cooling device

Abstract

The utility model discloses a roller kiln cooling device which comprises a supporting frame, a roller set is arranged in the supporting frame, a conveying roller frame is installed at one end of the supporting frame in a butt joint mode, a pre-cooling box is installed on the upper surface of the supporting frame, a cooling assembly is arranged at one end of the pre-cooling box, and a sealing plate is attached to the connecting position of the pre-cooling box and the cooling assembly. And a plurality of groups of external mounting rings are sleeved on the outer surface of the roller way group at the section of the pre-cooling box. Through the arrangement of the refrigerator, the air blower and the sleeve rod group, the contact area between the glazed tiles and the roller way group is reduced, so that the situation that heat dissipation is too fast or too slow due to excessive contact of the bottoms of the glazed tiles is avoided, the problems of deformation and cracks of the glazed tiles due to non-uniform thermal stress are avoided, and meanwhile, the bottom space is increased when the glazed tiles ascend; air can flow and circulate at the bottom of the glazed tile more smoothly, the cooling effect of the bottom of the glazed tile is further enhanced, and the whole glazed tile is cooled more uniformly.

Description

Technical Field

[0001] This utility model belongs to the technical field of glazed tile production equipment, specifically relating to a roller kiln cooling device. Background Technology

[0002] In the production of glazed tiles, roller kilns are key equipment used for firing. After high-temperature firing, glazed tiles need effective cooling to ensure product quality. Unlike tunnel kilns with kiln cars, roller kilns (archless kilns) do not operate using kiln cars loaded with products. Therefore, the kiln roof structure is a flat suspended ceiling, consisting of rollers arranged in parallel and traversing the cross-section of the kiln's working channel, forming the "roller track." Products are placed on the roller track and transported into the kiln as the rollers rotate, completing the firing process inside the kiln. After the ceramic products undergo firing, rapid cooling, and slow cooling processes, they need to be rapidly cooled to ensure that they exit the kiln at a relatively stable temperature and not too high.

[0003] Patent CN212431721U discloses a roller kiln cooling device, relating to the field of roller kiln cooling equipment. The device includes a roller kiln with a support frame on its outer side and a cooling box at its top. A first blower is installed on one side of the support frame, and a second blower is installed on the side of the support frame away from the first blower. A connecting pipe is connected to the side of the first blower closest to the support frame. This invention, by setting up a first blower, a second blower, an air outlet pipe, and air holes, controls the operation of the first blower to generate airflow into the air outlet pipe and upward through the air holes, thus cooling the products on the roller kiln. Controlling the operation of the second blower generates suction to draw away the heat generated by the air cooling through the air inlet, preventing the heat from swirling around the roller kiln and affecting product cooling. This slow cooling of the product is thus completed, effectively solving the problem of poor cooling efficiency in roller kilns.

[0004] The above-mentioned technical solution device has a limited and uneven cooling area during cooling, which can easily lead to localized inadequate or excessive cooling, affecting the quality stability of glazed tiles and resulting in unsatisfactory cooling effect. Utility Model Content

[0005] The purpose of this invention is to provide a roller kiln cooling device to solve the technical defects of existing roller kiln cooling devices, which result in inadequate or excessive cooling in certain areas, affecting the quality of finished products.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A roller kiln cooling device includes a support frame, within which a roller assembly is installed. A conveyor roller frame is connected to one end of the support frame, and a precooling box is installed on the upper surface of the support frame. A cooling component is provided at one end of the precooling box, and a sealing plate is attached to the connection between the precooling box and the cooling component. Multiple sets of outer rings are fitted on the outer surface of the roller assembly at the precooling box section, and the height of the outer rings is higher than the surface of the roller assembly.

[0008] The upper surface of the support frame is provided with a first electric push rod on both sides. The piston rod of the first electric push rod is connected to one end of the lower surface of the sealing plate. The sealing plate is respectively attached to the inlet of the cooling component and the outlet of the precooling box.

[0009] The upper surface of the precooling box has two sets of ventilation holes, and the support frame is located on the lower surface of the precooling box with a first through hole, in which an axial flow fan is installed.

[0010] As a preferred embodiment of this utility model, a second electric push rod is provided at the other end of the upper surface of the support frame. The piston rod of the second electric push rod is connected to a baffle. The baffle is attached to the outlet side of the cooling component. A second through hole is provided at one end of the lower surface of the inner wall of the support frame. A sleeve cylinder is fixedly installed in the second through hole.

[0011] As a further embodiment of this utility model, the cooling assembly includes a roller kiln body, which is disposed on the upper surface of the support frame at one end of the precooling box. Multiple sets of air outlets are provided at one end of the upper surface of the roller kiln body, and a baffle is attached to the outlet side of the roller kiln body.

[0012] As a further embodiment of this utility model, a refrigeration unit is provided at the other end of the lower surface of the support frame, and multiple sets of air inlets are provided at the other end of the lower surface of the inner wall of the support frame. The evaporator outlet of the refrigeration unit is connected to one of the multiple sets of air inlets.

[0013] As a further embodiment of this utility model, a blower is provided inside the sleeve cylinder. The blower is located at one end of the lower surface of the support frame, and the blower can blow air into the roller kiln body through the second through hole provided in the support frame.

[0014] As a preferred embodiment of this utility model, multiple sets of sleeve rods of different sizes than the roller group are provided at the roller group in the section of the roller kiln, and the height of the sleeve rods is designed to increase in a stepped manner.

[0015] Compared with the prior art, the roller kiln cooling device provided by this utility model has the following beneficial effects: When cooling glazed tiles, the roller kiln cooling device promotes the rapid and comprehensive coverage of the surface of the glazed tiles with cold air, so that the heat on the surface of the glazed tiles can be transferred to the cold air more efficiently, thereby accelerating the cooling process of the glazed tiles, reducing the contact area between the glazed tiles and the roller assembly, so that the bottom of the glazed tiles will not experience excessive heat dissipation due to excessive contact, thereby achieving the cooling of the glazed tiles. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded structural diagram of the precooling box in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the axial flow fan in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the cooling component in an embodiment of the present invention;

[0021] Figure 5 This is an exploded structural diagram of the roller kiln cooling device in an embodiment of this utility model.

[0022] Figure label:

[0023] 1. Support frame; 101. Conveyor roller frame; 102. Roller assembly; 103. Sleeve cylinder;

[0024] 2. Precooling box; 201. External mounting ring; 202. Ventilation hole; 203. Axial flow fan;

[0025] 3. Sealing plate; 301. First electric push rod; 302. Baffle; 303. Second electric push rod;

[0026] 4. Cooling components; 401. Roller kiln body; 402. Blower; 403. Air outlet; 404. Air inlet; 405. Refrigeration unit; 406. Sleeve rod assembly. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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 limitations on the embodiments of this utility model.

[0029] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0030] See appendix Figures 1 to 5 As shown in the figure, a roller kiln cooling device according to an embodiment of the present invention includes a support frame 1, a roller assembly 102 is provided inside the support frame 1, a conveyor roller frame 101 is connected to one end of the support frame 1, a precooling box 2 is installed on the upper surface of the support frame 1, a cooling component 4 is provided at one end of the precooling box 2, a sealing plate 3 is attached to the connection between the precooling box 2 and the cooling component 4, and multiple sets of outer rings 201 are sleeved on the outer surface of the roller assembly 102 at the section of the precooling box 2, and the height of the outer rings 201 is higher than the surface of the roller assembly 102.

[0031] The upper surface of the support frame 1 is provided with a first electric push rod 301 on both sides. The piston rod of the first electric push rod 301 is connected to one end of the lower surface of the sealing plate 3. The sealing plate 3 is respectively attached to the inlet of the cooling component 4 and the outlet of the precooling box 2.

[0032] The upper surface of the precooling box 2 has two sets of ventilation holes 202, and the support frame 1 has a first through hole located on the lower surface of the precooling box 2. An axial flow fan 203 is installed in the first through hole.

[0033] The other end of the upper surface of the support frame 1 is provided with a second electric push rod 303. The piston rod of the second electric push rod 303 is connected to a baffle 302. The baffle 302 is attached to the outlet side of the cooling component 4. One end of the lower surface of the inner wall of the support frame 1 is provided with a second through hole. A sleeve cylinder 103 is fixedly installed in the second through hole.

[0034] In the above technical solution, the precooling box 2 blows air through the axial flow fan 203 at the lower end, which can initially reduce the temperature of the glazed tiles and stabilize it within a certain range, ensuring the efficiency of subsequent cooling and facilitating the use of a roller kiln cooling device.

[0035] When the produced glazed tiles are conveyed from the conveyor roller frame 101 to the roller assembly 102, as the glazed tiles pass through the outer ring 201 fitted on the surface of the roller assembly 102 inside the precooling box 2, one end of the glazed tile will naturally rest against the outer ring 201, causing one end of the glazed tile to be relatively raised. The axial flow fan 203 at the lower end of the precooling box 2 blows air through the raised glazed tile, effectively blowing away heat from the bottom and sides of the glazed tile, achieving initial cooling. Afterwards, the glazed tile passes through two sets of rollers on the upper surface of the precooling box 2. The ventilation hole 202 can balance the air pressure inside the box and assist in the discharge of hot steam, so that the air inside the precooling box 2 can be continuously circulated and renewed, ensuring the stability of the cooling effect. Then, the sealing plate 3 prevents disorderly gas exchange between the precooling box 2 and the cooling component 4 during unnecessary cooling stages. After precooling is completed, the first electric push rod 301 can drive it to rise and transport the glazed tile. The cooling component 4 completes the cooling of the glazed tile, which can ensure uniform area distribution during cooling and improve the stability effect.

[0036] To further improve the sealing capability of the cooling component 4, it is attached to the inlet of the cooling component 4 and the outlet of the precooling box 2 under the drive of the first electric push rod 301, so that the air initially cooled in the precooling box 2 is independent from the cooling environment in the cooling component 4, ensuring the stability of the environment in the precooling and cooling stages. During the cooling process, the sealing plate 3 and the baffle 302 are tightly attached to the inlet and outlet of the cooling component 4 to prevent the intrusion of external air and the leakage of internal cooling gas.

[0037] See appendix Figure 4 -Appendix Figure 5 As shown, the cooling assembly 4 includes a roller kiln body 401, which is located on the upper surface of the support frame 1 at one end of the precooling box 2. Multiple sets of air outlets 403 are provided at one end of the upper surface of the roller kiln body 401, and a baffle 302 is attached to the outlet side of the roller kiln body 401. A chiller 405 is located at the other end of the lower surface of the support frame 1, and multiple sets of air inlets 404 are provided at the other end of the lower surface of the inner wall of the support frame 1. The evaporator outlet of the chiller 405 is connected to one of the multiple sets of air inlets 404. A blower 402 is installed inside the sleeve cylinder 103, located at one end of the lower surface of the support frame 1. The blower 402 can blow air into the roller kiln body 401 through the second through hole provided in the support frame 1. Multiple sets of sleeve rods 406 of different sizes are provided at the roller group 102 in the inner section of the roller kiln body 401, and the height of the sleeve rods 406 is designed to increase in a stepped manner.

[0038] To improve the cooling effect during the cooling of glazed tiles, the cold air generated by the chiller 405 is connected to one of the multiple sets of air inlets 404 on the lower surface of the inner wall of the support frame 1 through the evaporator outlet of the chiller 405. This allows the cold air to enter the roller kiln body 401 from the air inlet 404. A blower 402 installed inside the sleeve cylinder 103 blows air into the roller kiln body 401 through a second through-hole, enabling the cold air to quickly and comprehensively cover all surfaces of the glazed tiles. This allows the heat from the glazed tile surface to be transferred to the cold air more efficiently, thereby accelerating the cooling process of the glazed tiles. During the cooling process, as the glazed tile passes through the sleeve rod assembly 406, it gradually rises along the stepped sleeve rod assembly 406, reducing the contact area between the glazed tile and the roller assembly 102. This prevents the bottom of the glazed tile from overheating or underheating due to excessive contact, thus avoiding quality problems such as deformation and cracks caused by uneven thermal stress. At the same time, the increased space at the bottom during the ascent allows air to circulate more smoothly at the bottom of the glazed tile, further enhancing the cooling effect at the bottom and making the overall cooling of the glazed tile more uniform, ensuring that the ideal cooling effect is achieved throughout the entire cooling process.

[0039] The working principle of this utility model embodiment is as follows: When the produced glazed tiles are conveyed from the conveyor roller frame 101 to the roller group 102, when the glazed tiles pass through the outer ring 201 fitted on the surface of the roller group 102 in the precooling box 2, one end of the glazed tile will naturally rest on the outer ring 201, thereby causing one end of the glazed tile to be relatively raised. When the axial flow fan 203 at the lower end of the precooling box 2 blows air, the airflow can fully blow on the bottom and sides of the glazed tile when passing through the raised glazed tile, quickly removing the heat from the surface of the glazed tile and achieving initial cooling.

[0040] The first electric push rod 301 drives the sealing plate 3 to rise, transporting the pre-cooled glazed tiles into the roller kiln body 401. The cold air generated by the refrigeration unit 405 is connected to one of the multiple sets of air inlets 404 on the lower surface of the inner wall of the support frame 1 through the evaporator outlet of the refrigeration unit 405. The cold air enters the roller kiln body 401 from the air inlet 404. The blower 402 installed in the sleeve cylinder 103 blows air into the roller kiln body 401 through the second through hole, which can make the cold air quickly and comprehensively cover all surfaces of the glazed tiles, so that the heat of the glazed tile surface can be transferred to the cold air more efficiently, thereby accelerating the cooling process of the glazed tiles. Afterwards, when the glazed tiles pass through the sleeve rod group 406, they will gradually rise along the stepped sleeve rod group 406, reducing the contact area between the glazed tiles and the roller group 102, so that the bottom of the glazed tiles will not dissipate heat too quickly or too slowly due to excessive contact, thereby achieving the cooling of the glazed tiles.

[0041] In summary, the roller kiln cooling device of this utility model can achieve a uniform distribution of cooling area when cooling glazed tiles, avoiding situations where the local cooling area is insufficient or excessive, thus not affecting the quality of the glazed tiles and achieving an ideal cooling effect.

[0042] The above description illustrates the basic principles of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A roller kiln cooling device comprising a support frame (1), characterized in that: The support frame (1) is provided with a roller group (102), one end of the support frame (1) is provided with a conveying roller frame (101), the upper surface of the support frame (1) is provided with a pre-cooling box (2), one end of the pre-cooling box (2) is provided with a cooling assembly (4), the junction of the pre-cooling box (2) and the cooling assembly (4) is attached with a sealing plate (3), the outer surface of the roller group (102) at the segment of the pre-cooling box (2) is provided with a plurality of outer rings (201), and the height of the outer ring (201) is higher than the surface of the roller group (102). The upper surface of the support frame (1) is provided with a first electric push rod (301) on both sides, the piston rod of the first electric push rod (301) is connected to one end of the lower surface of the sealing plate (3), and the sealing plate (3) is attached to the inlet of the cooling assembly (4) and one end of the outlet of the pre-cooling box (2) respectively. The upper surface of the pre-cooling box (2) is provided with two groups of ventilation holes (202), the lower surface of the support frame (1) is provided with a first through hole, and the first through hole is provided with an axial flow fan (203).

2. A roller kiln cooling arrangement according to claim 1, characterised in that: The other end of the upper surface of the support frame (1) is provided with a second electric push rod (303), the piston rod of the second electric push rod (303) is connected with a baffle (302), the baffle (302) is attached to one side of the outlet of the cooling assembly (4), one end of the lower surface of the inner wall of the support frame (1) is provided with a second through hole, and the second through hole is fixedly provided with a sleeve fixing cylinder (103).

3. A roller kiln cooling arrangement according to claim 2, characterised in that: The cooling assembly (4) comprises a roller kiln body (401), the roller kiln body (401) is arranged on the upper surface of the support frame (1) at one end of the pre-cooling box (2), one end of the upper surface of the roller kiln body (401) is provided with a plurality of gas outlets (403), and the baffle (302) is attached to one side of the outlet of the roller kiln body (401).

4. A roller kiln cooling arrangement according to claim 3, characterised in that: The other end of the lower surface of the support frame (1) is provided with a refrigeration machine (405), the lower surface of the inner wall of the support frame (1) is provided with a plurality of air inlets (404), and the outlet of the evaporator in the refrigeration machine (405) is connected with one of the plurality of air inlets (404).

5. A roller kiln cooling arrangement according to claim 4, characterised in that: The sleeve fixing cylinder (103) is provided with a blower (402), the blower (402) is located at one end of the lower surface of the support frame (1), and the blower (402) can blow air into the roller kiln body (401) through the second through hole of the support frame (1).

6. A roller kiln cooling arrangement according to claim 3, characterised in that: The roller group (102) at the segment of the roller kiln body (401) is provided with a plurality of sleeve rod groups (406) with different sizes from the roller group (102), and the height of the sleeve rod group (406) is designed in a stepped increasing manner.

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