On-line sampling device for lime for sintering

Abstract

A feeding pipe is connected with an inlet pipe and an outlet pipe, the other end of the inlet pipe is connected with a sampling bin, the sampling bin is conical and is provided with an ash discharging valve, a rectangular baffle is arranged in the sampling bin and divides the sampling bin into a front part and a rear part, the baffle is perpendicular to the inlet pipe, and the bottom of the baffle is vacant. The inlet pipe is provided with an inlet valve and a back-blowing pipe, the back-blowing pipe is provided with a back-blowing valve, the outlet pipe is provided with an outlet valve, materials enter the sampling bin through the pressure difference between the feeding port and the exhaust port, the ash conveying pipeline uses compressed air larger than or equal to 300 kPa, the baffle is located in the center of the sampling bin, the lime stacking height is controlled, it is avoided that too much lime enters the sampling bin, and when the baffle is covered with the lime, the sampling bin is blocked. When the pressure of the sampling bin is reduced and the discharging condition is met, sampling is started, and when the pressure gauge is obviously reduced, the lime meets the discharging condition and the ash discharging is finished, the residual lime is blown into the ash conveying pipe by utilizing the back-blowing pipe, so that the influence of material adhesion is eliminated, the lime can be directly sampled from the ash conveying pipe, the flexible and timely analysis is facilitated, and the production adjustment is supported.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering equipment, in particular to an online sampling device for lime used in sintering. Background Art

[0002] Sintering lime is one of the important raw materials in the sintering process. Its composition and quality have an important impact on the sintering process and the quality of the finished product. Through the online sampling device, the composition, particle size distribution and other parameters of the lime can be monitored in real time, so as to timely adjust the batching ratio and process parameters in the sintering process to ensure the quality stability and consistency of the final product. However, due to the high pressure of the ash conveying gas source, the lime sampling cannot be taken from the ash conveying pipeline. Sampling in the batching room silo results in material segregation and analysis lag, which makes it impossible to guide production in a timely manner. Utility Model Content

[0003] The utility model aims to provide an online sampling device for lime for sintering, so as to solve the problems that lime sampling cannot be carried out from the lime conveying pipeline, sampling in the batching room silo causes material segregation and analysis lag, and production cannot be guided in time.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online sampling device for sintering white ash, installed on a feed pipe of a sintering device, characterized in that it includes a sampling bin, an inlet pipe, an outlet pipe, and a back-blowing pipe, the feed pipe is connected with an inlet pipe and an outlet pipe, the other end of the inlet pipe is connected with a sampling bin, an inlet pipe is arranged at the top of the sampling bin, the sampling bin is arranged in a conical shape, a sampling bin ash unloading valve is arranged on the sampling bin, a baffle is arranged in the middle of the sampling bin to divide the sampling bin into a front space and a rear space, the baffle is a rectangular plate, the baffle is arranged vertically corresponding to the inlet pipe, the left and right ends of the baffle are in conflict with the inner wall of the sampling bin, and the bottom corresponding to the conical part of the sampling bin is empty, an inlet valve is arranged on the inlet pipe, a back-blowing pipe is also connected to the inlet pipe, a back-blowing valve is arranged on the back-blowing pipe, and an outlet valve is arranged on the outlet pipe.

[0005] Preferably, the outlet pipe is arranged perpendicular to the inlet pipe.

[0006] Preferably, the outlet pipe is installed in the space corresponding to the rear of the baffle of the sampling chamber.

[0007] Preferably, a pressure gauge is also included and installed on the outlet pipe.

[0008] Preferably, it also includes an ash outlet installed at the bottom of the sampling bin.

[0009] Preferably, a nitrogen gas source pipe is connected to the backblowing pipe through a flange, and the pressure requirement is greater than 400kpa.

[0010] Preferably, the ash feeding pipe uses compressed air as the air source, and the pressure requirement is ≥300kpa.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By utilizing the pressure difference between the inlet and the exhaust port of the sampling device, the material is driven into the sampling bin. The ash conveying pipeline uses compressed air as the air source, and the pressure requirement is ≥300kpa. A baffle is set in the center of the sampling bin. The baffle is set in the center of the sampling bin to help control the accumulation height of the white ash in the sampling bin. The baffle divides the white ash into two parts to ensure that it will not exceed a certain height to prevent too much white ash from entering the sampling bin and maintain the normal operation of the sampling bin. When the white ash covers above the baffle, the pressure in the sampling bin will drop accordingly. When the white ash in the sampling device covers above the conical section, the exhaust port pressure drops significantly. At this time, the material in the sampling bin meets the unloading conditions and sampling begins. When the pressure on the pressure gauge drops significantly, the white ash in the sampling bin meets the unloading conditions. After the ash discharge is completed, the residual white ash in the sampling bin is driven into the ash conveying pipe through the backflush pipe to eliminate the influence of the sticky material in the sampling bin on the sampling of white ash. At the same time, the system directly samples from the ash conveying pipe, which has the characteristics of flexible sampling and timely analysis, and is convenient for production adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] In the figure: 1. Inlet valve; 2. Outlet valve; 3. Sampling bin ash unloading valve; 4. Backblowing valve. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1: Please refer to Figure 1, the utility model provides an embodiment: an online sampling device for sintering white ash, which is installed on the feed pipe of the sintering equipment, and is characterized by: comprising a sampling bin, an inlet pipe, an outlet pipe, and a back-blowing pipe. The feed pipe is connected with the inlet pipe and the outlet pipe. The inlet pipe is responsible for conveying the material to the sampling bin, and the outlet pipe is responsible for discharging the material in the sampling bin. The other end of the inlet pipe is connected with the sampling bin, and the sampling bin stores the sampled material. The sampling bin is designed in a conical shape to facilitate the flow and sampling of the material. The top of the sampling bin is provided with an inlet pipe, and the sampling bin is conically arranged. The sampling bin is provided with a sampling bin ash unloading valve 3. A baffle is arranged in the middle of the sampling bin to divide the sampling bin into a front space and a rear space. The baffle is a rectangular plate, and the baffle is vertically arranged corresponding to the inlet pipe. The left and right ends of the baffle are adjacent to the sampling bin. The wall conflicts with each other, and the conical part corresponding to the sampling bin at the bottom is empty. The baffle is set in the center of the sampling bin, which can help control the accumulation height of the white ash in the sampling bin. When the white ash accumulates above the baffle position, the baffle separates the white ash into two parts to ensure that it does not exceed a certain height to prevent too much white ash from entering the sampling bin and maintain the normal operation of the sampling bin. When the white ash covers above the baffle, the pressure in the sampling bin will drop accordingly. This is because the white ash coverage hinders the smooth flow of the exhaust port. This pressure drop can be used as a signal to trigger the sampling action, telling the system to start the sampling operation, ensuring the accuracy and timeliness of the sampling. An inlet valve 1 is set on the inlet pipe to control the switch of the inlet pipe and close the white ash entering the sampling bin. The inlet pipe is also connected to a backblowing pipe for backblowing. A back-blow valve 4 is arranged on the pipe. The back-blow pipe and the back-blow valve 4 are used to remove the residual materials in the sampling bin by back-blow after the sampling is completed, so as to eliminate the influence on the subsequent sampling. An outlet valve 2 is arranged on the outlet pipe. The outlet valve 2 controls the outlet pipe switch to discharge the materials in the sampling bin. The outlet pipe is vertically arranged on the inlet pipe. The outlet pipe is installed in the space behind the baffle of the sampling bin. It also includes a pressure gauge for monitoring the pressure change of the outlet pipe, so as to judge the state of the material in the sampling bin, such as whether the ash unloading conditions are met. It can monitor the pressure change in the sampling bin in real time, judge the sampling state, ensure the accuracy and timeliness of the sampling, and is installed on the outlet pipe. It also includes an ash outlet for discharging the materials in the sampling bin to complete the sampling process. It is installed at the bottom of the sampling bin. , and also includes a nitrogen gas source pipe connected to the backblowing pipe through a flange, and the pressure requirement is greater than 400kpa. It is connected to the backblowing pipe through a flange to provide a backblowing gas source to ensure the removal of residual materials in the sampling bin and the accuracy of the next sampling. The ash feeding pipe uses compressed air as the gas source, and the pressure requirement is ≥300kpa. Compressed air and nitrogen are used as gas sources to remove residual materials in the sampling bin, keep the sampling environment clean, and avoid the influence of sticking materials on sampling. At the same time, the system directly samples from the ash conveying pipe, which has the characteristics of flexible sampling and timely analysis, and is convenient for production adjustment. When the white ash is transported, the sampling bin unloading valve 3 is closed, the inlet valve 1 is opened, and the outlet valve 2 is opened. At this time, sampling begins. When the pressure on the pressure gauge drops significantly, the white ash in the sampling bin meets the unloading conditions.Close the inlet valve 1 and the outlet valve 2. When the pressure gauge drops rapidly, it indicates that the ash in the sampling bin has exceeded the conical section and can be unloaded. Open the sampling bin unloading valve 3 to unload the ash and complete the material discharge. After the ash discharge is completed, open the back-blowing valve 4. The back-blowing gas source uses nitrogen, and the pressure is required to be greater than 400kpa. Open the outlet valve 2 and pump the residual ash in the sampling bin into the ash delivery pipe to eliminate the influence of the sticky material in the sampling bin on the ash sampling.

[0020] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An online sampling device for lime for sintering, installed on the feed pipe of sintering equipment, characterized by: The invention comprises a sampling bin, an inlet pipe, an outlet pipe and a back-blowing pipe. The feed pipe is connected to the inlet pipe and the outlet pipe. The other end of the inlet pipe is connected to the sampling bin. The top of the sampling bin is provided with the inlet pipe. The sampling bin is arranged in a conical shape. The sampling bin is provided with a sampling bin ash unloading valve (3). A baffle is arranged in the middle of the sampling bin to divide the sampling bin into a front space and a rear space. The baffle is a rectangular plate. The baffle is arranged vertically corresponding to the inlet pipe. The left and right ends of the baffle are in contact with the inner wall of the sampling bin. The bottom corresponding to the conical part of the sampling bin is empty. The inlet pipe is provided with an inlet valve (1). The inlet pipe is also connected to the back-blowing pipe. The back-blowing pipe is provided with a back-blowing valve (4). The outlet pipe is provided with an outlet valve (2).

2. The on-line sampling device for lime for sintering according to claim 1, characterized in that: The outlet pipe is arranged perpendicularly to the inlet pipe.

3. The on-line sampling device for lime for sintering according to claim 1, characterized in that: The outlet pipe is installed in the space corresponding to the rear of the sampling chamber baffle.

4. The on-line sampling device for lime for sintering according to claim 1, characterized in that: Also included is a pressure gauge, which is installed on the outlet pipe.

5. The on-line sampling device for lime for sintering according to claim 1, characterized in that: It also includes an ash outlet, which is installed at the bottom of the sampling bin.

6. The on-line sampling device for lime for sintering according to claim 1, characterized in that: It also includes a nitrogen gas source pipe connected to the backblowing pipe through a flange, and the pressure is required to be greater than 400kpa.

7. The on-line sampling device for lime for sintering according to claim 1, characterized in that: It also includes an ash feeding pipe, which uses compressed air as the air source, and the pressure requirement is ≥300kpa.

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