A rotary kiln clinker production preheater sampling device

Abstract

The utility model discloses a rotary kiln clinker production preheater sampling device relates to preheater sampling technical field, including preheater pipe, sampling port, rotating component, flap valve subassembly and counterweight subassembly, and sampling port installs at the top of preheater pipe, and rotating component is installed in one side of sampling port, and flap valve subassembly is installed in the inner chamber of sampling port, and flap valve subassembly is used for preventing the leakage of preheater pipe inner chamber gas and material, and counterweight subassembly is installed in the end of rotating component. The utility model discloses the setting mode of rotating component, flap valve subassembly and counterweight subassembly cooperation, through the ingenious setting of counterweight block, the convenience and security of sampling operation are balanced, when normal sampling, flap valve can easily turn down and open, when abnormal positive pressure, automatic fast closure, form an effective protective barrier, realize safe, convenient, efficient sampling operation, guarantee the safety of operating personnel, improve sampling efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of preheater sampling technology, and in particular to a sampling device for a preheater in rotary kiln clinker production. Background Technology

[0002] In the production of cement rotary kiln clinker, accurately obtaining the decomposition rate of materials in the preheater is a key step in controlling the production process and ensuring product quality. Currently, the preheater decomposition rate sampling ports commonly used in the industry are mostly externally open structures.

[0003] In actual sampling operations, the rotary kiln is in a complex and dynamic state, which can easily lead to fluctuations in kiln conditions, resulting in unstable internal pressure in the preheater and even positive pressure. Once positive pressure is formed, high-temperature materials with a temperature of over 1200 degrees Celsius will violently spray out from the externally opened sampling port, which can easily cause serious burns to on-site operators and poses a great safety hazard. It is difficult to respond quickly to sudden positive pressure situations during sampling operations, which not only affects sampling efficiency but also further increases operational risks. Utility Model Content

[0004] The purpose of this invention is to provide a sampling device for a preheater in rotary kiln clinker production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sampling device for a preheater in rotary kiln clinker production, comprising a preheater tube and a sampling port, wherein the sampling port is installed at the top of the preheater tube, and further comprising:

[0006] A rotating assembly, which is installed through one side of the sampling port;

[0007] A flap valve assembly is installed in the inner cavity of the sampling port and is used to prevent leakage of gas and material in the inner cavity of the preheater tube.

[0008] A counterweight assembly is installed at the end of the rotating assembly and is used to provide counterweight at both ends of the rotating assembly.

[0009] Preferably, the rotating assembly includes:

[0010] A connecting shaft is rotatably inserted through both sides of the inner wall of the sampling port, and the connecting shaft is connected to the movable end of the flap valve assembly;

[0011] Bushings, a plurality of bushings being fixed relative to each other on the outer wall of the sampling port;

[0012] A graphite copper sleeve is rotatably fitted inside the bushing and fixedly fitted at the end of the connecting shaft.

[0013] Preferably, the connecting shaft provides rotational support for the movable end of the flap valve assembly, and the two counterweight components are respectively installed at both ends of the connecting shaft.

[0014] Preferably, the flap valve assembly includes:

[0015] A fixing plate is fixed to the inner wall of the sampling port, and the connecting shaft is located below the fixing plate;

[0016] A movable plate, which is fixed to the top of the connecting shaft and is embedded in one side of the fixed plate in a parallel state;

[0017] A baffle is fixed to the inner wall of the sampling port.

[0018] Preferably, the baffle is disposed above the movable plate, and the baffle is used to block the rotation direction of the movable plate.

[0019] Preferably, the counterweight assembly includes:

[0020] A counterweight rod, wherein the counterweight rod is fixedly connected to the end of the connecting shaft;

[0021] A counterweight block is fixed to one end of a counterweight rod and is used to assist the connecting shaft in counterbalancing the movable plate.

[0022] The technical effects and advantages of this utility model are as follows:

[0023] This invention utilizes a combination of a rotating component, a flap valve component, and a counterweight component. Through the ingenious placement of the counterweight, it balances the convenience and safety of sampling operations. During normal sampling, the flap valve can be easily opened by flipping down; under abnormal positive pressure, it automatically and quickly closes, forming an effective protective barrier. This fundamentally solves the safety hazard of high-temperature materials spraying out of the externally opened sampling port under positive pressure, achieving safe, convenient, and efficient sampling operations, ensuring operator safety, and improving sampling efficiency and accuracy. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front structure of this utility model.

[0025] Figure 2 This is a frontal cross-sectional view of the sampling port of this utility model.

[0026] Figure 3 This is a top-view cross-sectional structural diagram of the sampling port of this utility model.

[0027] In the diagram: 100, preheater tube; 200, sampling port; 300, rotating assembly; 301, connecting shaft; 302, bushing; 303, graphite copper bushing; 400, flap valve assembly; 401, fixed plate; 402, movable plate; 403, baffle; 500, counterweight assembly; 501, counterweight rod; 502, counterweight block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides, for example Figures 1-3 The sampling device for a rotary kiln clinker production preheater shown includes a preheater tube 100, a sampling port 200, a rotating assembly 300, a flap valve assembly 400, and a counterweight assembly 500. The preheater tube 100 is an upper structure of the rotary kiln clinker production preheater. The sampling port 200 is installed at the top of the preheater tube 100 and is used to connect the internal and external sampling spaces of the preheater tube 100. The sampling port 200 is used to sample the material inside the preheater. The rotating assembly 300 is installed through one side of the sampling port 200. The flap valve assembly 400 is installed in the inner cavity of the sampling port 200 and is used to prevent leakage of gas and material in the inner cavity of the preheater tube 100. The counterweight assembly 500 is installed at the end of the rotating assembly 300 and is used to counterweight both ends of the rotating assembly 300.

[0030] The rotating assembly 300 includes a connecting shaft 301, a bushing 302, and a graphite copper sleeve 303. The connecting shaft 301 is rotatably inserted into both sides of the inner wall of the sampling port 200. The connecting shaft 301 is connected to the movable end of the flap valve assembly 400. The connecting shaft 301 provides rotational support for the movable end of the flap valve assembly 400. Two counterweight assemblies 500 are respectively installed at both ends of the connecting shaft 301. Multiple bushings 302 are relatively fixed to the outer wall of the sampling port 200. The graphite copper sleeve 303 is rotatably sleeved in the inner cavity of the bushing 302. The graphite copper sleeve 303 is fixedly sleeved at the end of the connecting shaft 301. The connecting shaft 301 is rotatably sealed and connected through the bushings 302, so that the connecting shaft 301 can rotate stably on one side of the sampling port 200.

[0031] In addition, the flap valve assembly 400 includes a fixed plate 401, a movable plate 402, and a baffle 403. The fixed plate 401 is fixed to the inner wall of the sampling port 200, and the size of the fixed plate 401 is adapted to the inner wall structure of the sampling port 200. The connecting shaft 301 is located below the fixed plate 401, and the movable plate 402 is fixed to the top of the connecting shaft 301. The movable plate 402 is embedded in one side of the fixed plate 401 in a parallel state. The baffle 403 is fixed to the inner wall of the sampling port 200 and is located above the movable plate 402. The baffle 403 is used to block the rotation direction of the movable plate 402. Through the connection between the movable plate 402 and the connecting shaft 301, the movable plate 402 can rotate around the connecting shaft 301 and perform downward and reset actions. The corner of the movable plate 402 is in a matching state with one side of the fixed plate 401 to ensure that the inner cavity of the sampling port 200 can be completely sealed in the closed state to prevent material leakage from the inner cavity of the preheater tube 100.

[0032] Furthermore, the counterweight assembly 500 includes a counterweight rod 501 and a counterweight block 502. The counterweight rod 501 is fixedly connected to the end of the connecting shaft 301, and the counterweight block 502 is fixed to one end of the counterweight rod 501. The counterweight block 502 is used to assist the connecting shaft 301 in counterbalancing the movable plate 402. By adjusting the weight and position of the counterweight block 502, during normal sampling, the counterweight block 502 is pushed up, allowing the movable plate 402 to smoothly flip down and open on the fixed plate 401, facilitating sampling. When there is no external force, the gravity of the counterweight block 502 causes the movable plate 402 to be engaged with one side of the fixed plate 401, and the movable plate 402 can be held in place by the baffle 403, thus sealing the inner cavity of the preheater tube 100. When sampling is required... When positive pressure occurs inside the preheater tube 100, the force generated by the positive pressure is greater than the gravity of the counterweight 502, making it difficult to move the counterweight 502. This causes the flap valve to flip and close, blocking the ejection of high-temperature materials and thus protecting the safety of operators. The traditional external sampling structure is abandoned, and a downward flap design is adopted. The force generated by the positive pressure inside the preheater is used to achieve automatic closure of the movable plate 402 and the fixed plate 401, forming an effective protective barrier. This fundamentally solves the safety hazard of high-temperature materials ejecting from the external sampling port 200 under positive pressure, effectively avoiding burns caused by high-temperature materials ejecting under positive pressure due to kiln condition fluctuations. It provides reliable safety protection for operators and reduces the safety production risks of the enterprise.

[0033] In Example 2, based on Example 1, an operating handle is installed at one end of the connecting shaft 301. The operating handle allows the operator to manually assist in opening and closing the flap valve under normal circumstances, improving the convenience of operation.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 sampling device for a preheater in a rotary kiln clinker production process, comprising a preheater tube (100) and a sampling port (200), wherein the sampling port (200) is installed at the top of the preheater tube (100), characterized in that, Also includes: A rotating assembly (300) is installed through and on one side of the sampling port (200); A flap valve assembly (400) is installed in the inner cavity of the sampling port (200) and is used to prevent leakage of gas and material in the inner cavity of the preheater tube (100). A counterweight assembly (500) is installed at the end of the rotating assembly (300) and is used to provide counterweight at both ends of the rotating assembly (300).

2. The sampling device for a rotary kiln clinker preheater according to claim 1, characterized in that, The rotating assembly (300) includes: A connecting shaft (301) is rotatably inserted into both sides of the inner wall of the sampling port (200), and the connecting shaft (301) is connected to the movable end of the flap valve assembly (400); Bushings (302), a plurality of bushings (302) are fixed relative to each other on the outer wall of the sampling port (200); A graphite copper sleeve (303) is rotatably sleeved in the inner cavity of the bushing (302) and fixedly sleeved at the end of the connecting shaft (301).

3. The sampling device for a rotary kiln clinker preheater according to claim 2, characterized in that, The connecting shaft (301) provides rotational support for the movable end of the flap valve assembly (400), and the two counterweight assemblies (500) are respectively installed at both ends of the connecting shaft (301).

4. The sampling device for a rotary kiln clinker preheater according to claim 2, characterized in that, The flap valve assembly (400) includes: A fixing plate (401) is fixed to the inner wall of the sampling port (200), and a connecting shaft (301) is disposed below the fixing plate (401); Movable plate (402), the movable plate (402) is fixed to the top of the connecting shaft (301), and the movable plate (402) is embedded in one side of the fixed plate (401) in a parallel state; A baffle (403) is fixed to the inner wall of the sampling port (200).

5. The sampling device for a rotary kiln clinker preheater according to claim 4, characterized in that, The baffle (403) is disposed above the movable plate (402), and the baffle (403) is used to block the rotation direction of the movable plate (402).

6. The sampling device for a rotary kiln clinker production preheater according to claim 2, characterized in that, The counterweight assembly (500) includes: A counterweight rod (501) is fixedly connected to the end of a connecting shaft (301); The counterweight (502) is fixed to one end of the counterweight rod (501) and is used to assist the connecting shaft (301) in counterweighting the movable plate (402).

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