Slow-cooling exhaust tube and ceramic roller kiln using same
By installing a partition component and a gate valve inside the slow-cooling exhaust duct, the flow rate and velocity of the exhaust zone are adjusted, solving the problem of uneven heat exchange caused by traditional slow-cooling exhaust ducts and improving the quality consistency of ceramic products.
Patent Information
- Application Number
- CN202520173894.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Traditional slow-cooling exhaust ducts lack airflow and speed adjustment components, resulting in uneven heat exchange between the left, middle, and right parts of the ceramic products inside the slow-cooling chamber, which affects product quality.
A partition component and a gate valve are installed inside the slow-cooling exhaust duct. By controlling the opening and closing degree of the gate valve, the flow rate and velocity of the left, middle and right exhaust zones are adjusted to achieve a uniform distribution of air volume and velocity.
This achieves uniform heat exchange in the left, middle, and right parts of the ceramic product within the slow cooling chamber, avoiding cutting cracks during the cutting process.
Smart Images
Figure CN223710223U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the slow cooling air exhaust pipe technical field of ceramic roller kiln, specifically a slow cooling air exhaust pipe and ceramic roller kiln using same. BACKGROUND
[0002] In the building ceramic industry, the roller kiln is one of the important equipment for producing ceramic products, and the quenching pipe is a key component of the kiln. During the firing process of the kiln, the quenching pipe blows cold air into the kiln to exchange heat with the high-temperature ceramic products, thereby rapidly reducing the temperature of the products. During this process, the cold air is converted into hot air after absorbing heat. In order to maintain the pressure balance and temperature stability inside the kiln, this part of hot air needs to be extracted from the slow cooling zone of the kiln and discharged outside the kiln. However, due to the uneven distribution of hot air flow rate in the kiln passage, the flow rate in the middle is faster, while the flow rate on both sides is slower, which leads to differences in heat exchange speed of the products at different positions in the slow cooling zone. Especially when producing large-size ceramic products, due to the large volume of the products, their heat capacity and heat dissipation area also increase accordingly, resulting in inconsistent cooling rates on both sides and in the middle of the products. This uneven cooling rate will lead to uneven crystal transformation inside the products, and thus quality problems such as cutting cracks may occur during subsequent cutting processing.
[0003] In order to solve this problem, the prior art sets a slow cooling air exhaust pipe and a slow cooling box in the slow cooling zone of the kiln, the slow cooling box is used to place the ceramic products to be cooled, and the slow cooling air exhaust pipe is responsible for extracting the hot air in the box. However, the traditional slow cooling air exhaust pipe lacks air volume and air speed adjusting elements, which makes it impossible to adjust the air extraction flow rate and flow speed in the middle and on both sides of the slow cooling box according to actual needs, thereby leading to uneven heat exchange of the ceramic products in the left, middle and right parts of the slow cooling box. UTILITY MODEL CONTENTS
[0004] In view of the above defects, the utility model provides a slow cooling air exhaust pipe and ceramic roller kiln using same, aiming to solve the problem of uneven heat exchange of ceramic products in the left, middle and right parts of the slow cooling box caused by the lack of air volume and air speed adjusting elements in the traditional slow cooling air exhaust pipe, which makes it impossible to adjust the air extraction flow rate and flow speed in the middle and on both sides of the slow cooling box according to actual needs.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] The application discloses a slow cooling exhaust pipe, which comprises an outer shell, at least two partition assemblies and at least three gate valves, the top of the outer shell is provided with an exhaust port, the two partition assemblies are arranged in the inner part of the outer shell, and the inner part of the outer shell is sequentially divided into a left exhaust area, a middle exhaust area and a right exhaust area from left to right by the two partition assemblies; the three gate valves are arranged in the exhaust port, the left exhaust area, the middle exhaust area and the right exhaust area correspond to one gate valve respectively, and the three gate valves are respectively used for controlling the exhaust flow and the flow rate of the corresponding exhaust area.
[0007] Preferably, the partition assembly comprises a first partition plate and a second partition plate; the bottom end of the first partition plate is connected to the top end of the second partition plate, the first partition plate and the second partition plate form an included angle α, the top end of the first partition plate is connected to the gate valve, and the bottom end of the second partition plate is connected to the bottom of the outer shell.
[0008] Preferably, the included angle α formed by the first partition plate and the second partition plate is 135-210°.
[0009] Preferably, the inlet projection areas of the left exhaust area, the middle exhaust area and the right exhaust area are equal.
[0010] Preferably, the outer shell comprises a first shell body and a second shell body, the first shell body is connected to the second shell body, the first shell body is located at the top of the second shell body, the cross section of the first shell body is in a trapezoidal structure, and the cross section of the second shell body is in a rectangular structure.
[0011] Another aspect of the application provides a ceramic roller kiln, which comprises the slow cooling exhaust pipe, a support frame, a roller assembly, a slow cooling box, a waste heat main pipe and a transmission pipe.
[0012] The slow cooling box and the roller assembly are both mounted on the support frame, the roller assembly is used for carrying and conveying ceramic products, the slow cooling exhaust pipe is communicated with the top of the slow cooling box, the waste heat main pipe is arranged above the slow cooling exhaust pipe, and the slow cooling exhaust pipe is communicated with the waste heat main pipe through the transmission pipe.
[0013] The technical scheme provided by the application can have the following beneficial effects:
[0014] The two separation assemblies are arranged to sequentially divide the inside of the shell into a left air draft area, a middle air draft area and a right air draft area from left to right, and three gate valves are arranged at the air draft openings at the top of the shell, and the three gate valves correspond to the left air draft area, the middle air draft area and the right air draft area respectively, when the hot air in the slow cooling box body needs to be drawn out, the opening and closing degree of the corresponding gate valve of the left air draft area, the middle air draft area and the right air draft area is controlled, so as to control the air draft flow and flow rate of the left air draft area, the middle air draft area and the right air draft area, so as to adjust the air draft flow and flow rate of the middle and left and right sides of the slow cooling box body, so that the air draft flow and flow rate of the middle and left and right sides of the slow cooling box body are the same, so that the heat exchange of the left, middle and right parts of the ceramic product in the slow cooling box body is uniform, so as to avoid the cutting crack of the ceramic product in the subsequent cutting process. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a front view of a slow cooling air draft pipe.
[0016] Figure 2 It is an exploded view of a slow cooling air draft pipe.
[0017] Figure 3 It is a front view of a ceramic roller kiln using a slow cooling air draft pipe.
[0018] Wherein, 1, shell; 2, separation assembly; 3, gate valve; 4, support frame; 5, roller assembly; 6, slow cooling box body; 7, waste heat main pipe; 8, transmission pipe; 10, air draft opening; 11, left air draft area; 12, middle air draft area; 13, right air draft area; 14, first shell; 15, second shell; 21, first separation plate; 22, second separation plate; Alpha, the included angle formed by the first separation plate and the second separation plate. DETAILED DESCRIPTION
[0019] The technical scheme of the present application will be further described below in combination with the drawings and through specific embodiments.
[0020] In the description of the present application, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.
[0021] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified and limited, the terms "mounting", "splicing", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0022] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "splicing", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] A slow cooling exhaust pipe, comprising a shell 1, at least two partition assemblies 2 and at least three gate valves 3, the top of the shell 1 is provided with an exhaust port 10;
[0024] Two partition assemblies 2 are arranged in the interior of the shell 1, and two partition assemblies 2 are used to divide the interior of the shell 1 into left exhaust area 11, middle exhaust area 12 and right exhaust area 13 from left to right in sequence;Three gate valves 3 are arranged in the exhaust port 10, the left exhaust area 11, the middle exhaust area 12 and the right exhaust area 13 correspond to one gate valve 3 respectively, and three gate valves 3 are used to control the exhaust flow and flow rate of the corresponding exhaust area respectively.
[0025] The slow cooling exhaust pipe of the scheme, in the embodiment, as shown in the slow cooling exhaust pipe is applied to the ceramic roller hearth kiln, and the ceramic roller hearth kiln further comprises a slow cooling box body 6, the slow cooling box body 6 is communicated with the slow cooling exhaust pipe, and the ceramic product to be cooled is placed in the slow cooling box body 6. Figure 3 Figures 1-2 As shown, the slow cooling exhaust pipe comprises two partition assemblies 2 and three gate valves 3. When the slow cooling exhaust pipe is needed to be used to exhaust the hot air in the slow cooling box, since the two partition assemblies 2 are used to divide the inside of the shell 1 into left exhaust area 11, middle exhaust area 12 and right exhaust area 13 from left to right in turn, and the three gate valves 3 are used to control the exhaust flow and flow rate of the corresponding exhaust area respectively, by controlling the opening and closing degree of the corresponding gate valve 3 of the left exhaust area 11, the middle exhaust area 12 and the right exhaust area 13, the exhaust flow and flow rate of the left exhaust area 11, the middle exhaust area 12 and the right exhaust area 13 can be controlled, so that the exhaust flow and flow rate of the middle and left and right sides of the slow cooling box can be adjusted, the exhaust flow and flow rate of the middle and left and right sides of the slow cooling box are the same, the heat exchange of the left, middle and right parts of the ceramic products in the slow cooling box is uniform, and the cutting crack of the ceramic products in the subsequent cutting process is avoided.
[0026] Preferably, the partition assembly 2 comprises a first partition plate 21 and a second partition plate 22; the bottom end of the first partition plate 21 is connected to the top end of the second partition plate 22, the first partition plate 21 and the second partition plate 22 form an included angle α, the top end of the first partition plate 21 is connected to the gate valve 3, and the bottom end of the second partition plate 22 is connected to the bottom of the shell 1.
[0027] In this embodiment, as shown in the figure, Figure 1 By ingeniously connecting the first partition plate 21 and the second partition plate 22 at an included angle α, the partition assembly 2 realizes the reasonable division and optimized utilization of the internal space of the shell 1. This design not only enhances the stability of the structure of the entire partition assembly 2, but also effectively guides the flow direction of the hot air, reduces the vortex and resistance. At the same time, since the top end of the first partition plate 21 is connected to the gate valve 3, and the bottom end of the second partition plate 22 is connected to the bottom of the shell 1, the sealing and reliability of the partition assembly 2 are ensured.
[0028] Preferably, the included angle α formed by the first partition plate 21 and the second partition plate 22 is 135-210°. In this embodiment, as shown in the figure, Figure 1 When the width of the kiln is larger, the included angle α is selected to be 135-180°, which can reduce the air port area of the left exhaust area 11 and the right exhaust area 13; when the width of the kiln is smaller, the air port area of the middle exhaust area 12 needs to be narrowed, at this time the included angle α is selected to be 180-210°, which can achieve the exhaust of the left exhaust area 11, the middle exhaust area 12 and the right exhaust area 13.
[0029] Preferably, the inlet projected areas of the left exhaust zone 11, the middle exhaust zone 12, and the right exhaust zone 13 are equal. In this embodiment, since the inlet projected areas of the left exhaust zone 11, the middle exhaust zone 12, and the right exhaust zone 13 are equal, it means that each exhaust zone has the same inlet to receive hot air, which helps to reduce uneven distribution of hot air caused by spatial differences.
[0030] Preferably, the outer casing 1 includes a first casing 14 and a second casing 15, the first casing 14 being connected to the second casing 15, the first casing 14 being located on top of the second casing 15, the first casing 14 having a trapezoidal cross-section, and the second casing 15 having a rectangular cross-section. In this embodiment, as... Figure 1 As shown, since the cross-section of the first housing 14 is trapezoidal and the cross-section of the second housing 15 is rectangular, it is beneficial to improve the structural stability of the entire outer shell 1.
[0031] Another aspect of this application provides a ceramic roller kiln, including the slow cooling exhaust pipe, support frame 4, roller assembly 5, slow cooling box 6, waste heat main pipe 7, and transmission pipe 8.
[0032] The slow cooling chamber 6 and the roller conveyor assembly 5 are both installed on the support frame 4. The roller conveyor assembly 5 is used to carry and transport ceramic products. The slow cooling exhaust pipe is connected to the top of the slow cooling chamber 6. The waste heat main pipe 7 is located above the slow cooling exhaust pipe. The slow cooling exhaust pipe is connected to the waste heat main pipe 7 through the transmission pipe 8.
[0033] This solution provides a type of ceramic roller kiln. In this embodiment, for example... Figure 3 As shown, the roller conveyor assembly 5 is a prior art structure. After the ceramic product is fired, the roller conveyor assembly 5 transports the ceramic product to be cooled to the slow cooling chamber 6 for cooling treatment. The hot air generated during the cooling process is drawn away by the slow cooling exhaust pipe and transported to the waste heat main pipe 7 through the transmission pipe 8, realizing the effective utilization and recovery of hot air.
[0034] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.
Claims
1. A slow-cooling exhaust duct, characterized in that: It includes a housing, at least two partition components, and at least three gate valves, with an exhaust vent at the top of the housing; Both of the aforementioned partition components are disposed inside the housing, and the two partition components are used to divide the interior of the housing into a left exhaust zone, a middle exhaust zone, and a right exhaust zone from left to right; the three aforementioned gate valves are disposed at the exhaust port, and the left exhaust zone, the middle exhaust zone, and the right exhaust zone each correspond to one of the aforementioned gate valves, and the three aforementioned gate valves are used to control the exhaust flow rate and velocity of the corresponding exhaust zone.
2. The slow-cooling exhaust duct according to claim 1, characterized in that: The separation assembly includes a first separation plate and a second separation plate; The bottom end of the first partition plate is connected to the top end of the second partition plate, the first partition plate and the second partition plate form an angle α, the top end of the first partition plate is connected to the gate valve, and the bottom end of the second partition plate is connected to the bottom of the housing.
3. The slow-cooling exhaust duct according to claim 2, characterized in that: The included angle α formed by the first partition plate and the second partition plate is 135-210°.
4. The slow-cooling exhaust duct according to claim 1, characterized in that: The inlet projection areas of the left exhaust zone, the middle exhaust zone, and the right exhaust zone are equal.
5. The slow-cooling exhaust duct according to claim 1, characterized in that: The outer casing includes a first shell and a second shell, the first shell being connected to the second shell, the first shell being located on top of the second shell, the first shell having a trapezoidal cross-section, and the second shell having a rectangular cross-section.
6. A ceramic roller kiln, characterized in that: Includes the slow-cooling exhaust pipe, support frame, roller conveyor assembly, slow-cooling box, waste heat main pipe, and transmission pipe as described in any one of claims 1-5; Both the slow cooling chamber and the roller conveyor assembly are mounted on the support frame. The roller conveyor assembly is used to carry and transport ceramic products. The slow cooling exhaust pipe is connected to the top of the slow cooling chamber. The waste heat main pipe is located above the slow cooling exhaust pipe. The slow cooling exhaust pipe is connected to the waste heat main pipe through the transmission pipe.