On-line sampling device for sintering fly ash

Abstract

The utility model provides an on-line sampling device for sintering fly ash, which comprises an input mechanism, a sampling mechanism and a sampling mechanism, wherein the input mechanism is used for enabling the fly ash conveyed in an ash conveying pipeline to enter and one end of the input mechanism is communicated with the ash conveying pipeline; the sampling mechanism is used for collecting the fly ash entering from the input mechanism and is communicated with the other end of the input mechanism; one end of the output mechanism is communicated with the sampling mechanism, and the other end of the output mechanism is communicated with the other position of the ash conveying pipeline; according to the online sampling device for the sintering dedusting ash, sampling is directly carried out in the dedusting ash conveying process, the sampled dedusting ash is detected, the timeliness of a detection result is improved, and follow-up adjustment can be effectively carried out according to the detection result.

Description

Technical Field

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

[0002] During the sintering process of steel production, dust is generated. The generated dust is called dust removal ash. Since the sintering raw materials contain a large amount of fine materials, these materials need to be exhausted into the ash conveying pipeline and then conveyed to the dust removal equipment for dust removal treatment;

[0003] When conveying dust ash, it is necessary to ensure that the ash conveying air source pressure is relatively high, thereby ensuring that the dust ash does not remain in the ash conveying pipeline; according to actual use needs, the conveyed dust ash needs to be tested, and the substances contained in the dust ash are obtained through the test results; however, due to the high pressure in the ash conveying pipeline, the dust ash cannot be sampled from the ash conveying pipeline; the existing technology is to sample in the silo of the batching room, but sampling in the silo will cause material segregation and analysis delay, and it is impossible to adjust the production plan in time according to the test results. Utility Model Content

[0004] The purpose of this utility model is to provide an online sampling device for sintering dust removal, which can solve the above technical problems;

[0005] The utility model provides an online sampling device for sintering dust removal, comprising:

[0006] An input mechanism for allowing dust transported in the ash conveying pipeline to enter, one end of which is connected to the ash conveying pipeline;

[0007] A sampling mechanism for collecting dust entering from the input mechanism, connected to the other end of the input mechanism;

[0008] An output mechanism used to form a loop with the ash conveying pipeline during the process of the sampling mechanism collecting dust, one end of which is connected to the sampling mechanism, and the other end of which is connected to another position of the ash conveying pipeline.

[0009] As a further technical solution, the input agencies include:

[0010] An inlet pipe, one end of which is connected to the ash conveying pipeline and the other end of which is connected to the sampling mechanism;

[0011] The first valve is arranged on the input pipe.

[0012] As a further technical solution, the input mechanism also includes:

[0013] The backflush valve is arranged on the input pipe and placed between the first valve and the sampling mechanism.

[0014] As a further technical solution, the sampling mechanism includes:

[0015] The sampling chamber is connected to the input mechanism and the output mechanism respectively;

[0016] The baffle is arranged in the sampling chamber and divides the sampling chamber into a first chamber and a second chamber. The first chamber is connected to the input mechanism, and the second chamber is connected to the output mechanism.

[0017] As a further technical solution, the sampling chamber includes a vertical section and a conical section, and the baffle is arranged in the vertical section.

[0018] As a further technical solution, the sampling mechanism also includes:

[0019] The discharge valve is arranged at one end of the tapered section.

[0020] As a further technical solution, the output mechanism includes:

[0021] The output pipe has one end connected to the sampling mechanism and the other end connected to the ash conveying pipeline;

[0022] The second valve is arranged on the output pipe.

[0023] As a further technical solution, a pressure measuring device is provided on the output pipe and placed between the output pipe and the second valve.

[0024] Preferably, the pressure measuring device is a pressure gauge.

[0025] The technical solution of the present invention connects the sampling mechanism with the ash conveying pipeline through the combination of the input mechanism and the output mechanism. The input mechanism and the output mechanism can be opened as needed, and the dust ash in the ash conveying pipeline can be collected through the sampling mechanism to realize online dust ash sampling, and the dust ash after sampling is tested, and subsequent operations are performed according to the test results. Compared with the existing technology, sampling is directly performed during the dust ash transmission process, and the dust ash after sampling is tested, which improves the timeliness of the test results and can effectively perform subsequent adjustments according to the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a structural schematic diagram of an embodiment of a sintering dust online sampling device of the present invention;

[0028] Figure 2This is a structural schematic diagram of another embodiment of a sintering dust online sampling device of the utility model;

[0029] Figure 3 This is a structural schematic diagram of another embodiment of a sintering dust online sampling device of the present invention;

[0030] Figure 4 This is a structural schematic diagram of another embodiment of a sintering dust online sampling device of the present utility model.

[0031] Description of reference numerals:

[0032] 1-input mechanism; 11-input pipe; 12-first valve; 13-backflush valve; 2-ash conveying pipeline; 3-sampling mechanism; 31-sampling chamber; 311-first chamber; 312-second chamber; 32-baffle; 33-discharge valve; 4-output mechanism; 41-output pipe; 42-second valve; 43-pressure measuring device. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it 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 a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0036] like Figure 1-4 As shown, the utility model proposes an online sampling device for sintering dust removal, comprising:

[0037] One end of the input mechanism 1 is connected to the ash conveying pipe 2, and the dust collected in the ash conveying pipe 2 is allowed to enter through the input mechanism 1; the sampling mechanism 3 is connected to the other end of the input mechanism 1, and the dust collected by the input mechanism 1 is collected through the sampling mechanism 3; one end of the output mechanism 4 is connected to the sampling mechanism 3, and the other end is connected to another position of the ash conveying pipe 2; the output mechanism 4 forms a loop with the ash conveying pipe 2 during the process of collecting dust collected by the sampling mechanism 3; in the actual use stage, the input mechanism 1 and the output mechanism 4 are turned on, and the dust collected is conveyed through the ash conveying pipe 2; when the dust collected is conveyed After reaching the position of the input mechanism 1, it enters the input mechanism 1, and the dust is transported by the input mechanism 1 to the position of the sampling mechanism 3, and the dust is collected by the sampling mechanism 3. At the same time, during the collection process, the dust will fall to the bottom of the sampling mechanism 3, and the air carrying the dust will enter the output mechanism 4, and the air will be discharged into the ash conveying pipe 2 through the output mechanism 4; when the dust in the sampling mechanism 3 reaches the unloading standard, the input mechanism 1 and the output mechanism 4 are closed, and the sampling mechanism 3 is opened to discharge the dust collected in the sampling mechanism 3 to the outside for detection.

[0038] The input mechanism 1 includes an input pipe 11 and a first valve 12. One end of the input pipe 11 is connected to the ash conveying pipeline 2, and the other end is connected to the sampling mechanism 3. The first valve 12 is provided on the input pipe 11. In the present invention, the ash conveying pipeline 2 and the sampling mechanism 3 are connected via the input pipe 11. When the dust conveyed by the ash conveying pipeline 2 enters the input pipe 11, it is conveyed to the sampling mechanism 3 by the input pipe 11 and collected by the sampling mechanism 3. Whether the input pipe 11 is connected is controlled by the first valve 12. When the input pipe 11 needs to be connected, the first valve 12 is in an open state; when the input pipe 11 needs to be disconnected, the first valve 12 is in a closed state.

[0039] like Figure 3 As shown in FIG4 , the input mechanism 1 further includes a back-blowing valve 13, which is provided on the input pipe 11 and is placed between the first valve 12 and the sampling mechanism 3. When sampling is completed, the first valve 12 is closed, and the output mechanism 4 is in a connected state. The back-blowing valve 13 is opened, and nitrogen is filled through the back-blowing valve 13. The nitrogen passes through the input pipe 11 and enters the sampling mechanism 3 and the output mechanism 4. When passing through the sampling mechanism 3 and the output pipe 41, the residual dust is blown into the ash conveying pipeline 2, thereby completing the cleaning of the sampling mechanism 3.

[0040] The sampling mechanism 3 includes a sampling chamber 31 and a baffle 32. The sampling chamber 31 is connected to the input mechanism 1 and the output mechanism 4 respectively. The baffle 32 is arranged in the sampling chamber 31, dividing the sampling chamber 31 into a first chamber 311 and a second chamber 312. The first chamber 311 is connected to the input mechanism 1, and the second chamber 312 is connected to the output mechanism 4. Dust dust enters the sampling chamber 31 through the input mechanism 1 and contacts the baffle 32. A portion of the dust dust falls into the sampling chamber 31. The other portion enters the output mechanism 4 along with the air and is transported back to the ash conveying pipeline 2 through the output mechanism 4. Specifically, the air mixed with dust dust enters the first chamber 311 and contacts the baffle 32. Part of the dust dust falls, while the other portion enters the second chamber 312 along with the air. After passing through the second chamber 312, it enters the output mechanism 4.

[0041] In addition, in the present invention, the sampling bin 31 includes a vertical section and a conical section, and the baffle 32 is arranged in the vertical section; when the dust is in contact with the baffle 32, it will fall into the conical section; and slide down along the inner wall of the conical section to the bottom of the conical section for collection; as the dust in the conical section gradually increases and reaches a set amount, the input mechanism 1 and the output mechanism 4 are closed; the dust in the conical section is discharged; specifically, the sampling mechanism 3 also includes a discharge valve 33, which is arranged at one end of the conical section, specifically the discharge valve 33 is arranged at the bottom of the conical section; when the dust is collected, the discharge valve 33 is in a closed state; when the dust in the conical section reaches a set amount, the discharge valve 33 is opened, and the dust collected in the conical section is discharged to the outside through the discharge valve 33;

[0042] The output mechanism 4 includes an output pipe 41 and a second valve 42. One end of the output pipe 41 is connected to the sampling mechanism 3, and the other end is connected to the ash conveying pipeline 2. The second valve 42 is provided on the output pipe 41. The conduction of the output pipe 41 is controlled by opening and closing the second valve 42. Specifically, when collecting dust, the second valve 42 is in an open state; when unloading the conical section, the second valve 42 is in a closed state; and when cleaning is performed through the backflush valve 13, the second valve 42 is in an open state.

[0043] In addition, in the present invention, a pressure measuring device 43 is also provided, which is arranged on the output pipe 41 and placed between the output pipe 41 and the second valve 42; the pressure measuring device 43 can detect the pressure in the sampling chamber 31, and then determine whether unloading is required; preferably, the pressure measuring device 43 is a pressure gauge.

[0044] In order to better understand the technical solution of the present invention, the working principle of the present invention is described in detail:

[0045] The dust conveying pipeline 2 is used to convey the dust. In the present invention, the air for conveying the dust is compressed air with a pressure of not less than 300kPa. When sampling is required, the first valve 12 and the second valve 42 are opened, and the back-blowing valve 13 and the discharge valve 33 are closed. The air mixed with the dust enters the input pipe 11 and enters the first bin 311 under the transmission of the input pipe 11. After the air mixed with the dust enters the first bin 311, it contacts the baffle 32. Part of the dust falls to the conical section, and part of the dust enters the second bin 312 along with the air, and enters the output pipe 41 after passing through the second bin 312. Part of the air mixed with the dust is discharged into the ash conveying pipeline 2 through the output pipe 41. As the amount of dust in the conical section increases, the dust in the conical section and The distance between the baffles 32 gradually shortens. When the dust in the conical section contacts the baffle 32, the resistance in the first bin 311 increases, and the pressure in the second bin 312 drops significantly, which in turn causes the pressure on the pressure gauge to drop. At this time, it proves that the conical section has reached the set amount; close the first valve 12 and the second valve 42, and open the discharge valve 33 to discharge the dust collected in the conical section to the outside; after the discharge is completed, close the discharge valve 33, open the second valve 42 and the back-blowing valve 13, and blow nitrogen into the input pipe 11 through the back-blowing valve 13. The dust remaining in the sampling bin 31 is blown to the output pipe 41 by the nitrogen, and then enters the ash conveying pipeline 2 after being transmitted through the output pipe 41. It should be noted that the pressure of the nitrogen entering through the back-blowing valve 13 is not less than 400kPa;

[0046] Through the above steps, sampling can be performed during the dust removal dust transmission process, thereby improving the detection efficiency and the accuracy of the detection results; by cleaning the sampling mechanism 3 after the sampling is completed, the crossover of samples can be avoided during subsequent sampling, resulting in inaccurate sampling results.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An online sampling device for sintering dust removal, characterized in that: include: An input mechanism (1) for allowing dust removed from the dust conveying pipe (2) to enter, one end of which is in communication with the dust conveying pipe (2); A sampling mechanism (3) for collecting dust entering from the input mechanism (1), which is connected to the other end of the input mechanism (1); An output mechanism (4) for forming a loop with the ash conveying pipeline (2) during the process of the sampling mechanism (3) collecting dust removal ash has one end connected to the sampling mechanism (3) and the other end connected to another position of the ash conveying pipeline (2).

2. The sintering dust online sampling device according to claim 1 is characterized in that: The input mechanism (1) comprises: An inlet pipe (11), one end of which is connected to the ash conveying pipe (2) and the other end of which is connected to the sampling mechanism (3); The first valve (12) is arranged on the input pipe (11).

3. The sintering dust online sampling device according to claim 2, characterized in that: The input mechanism (1) further comprises: The backflush valve (13) is arranged on the input pipe (11) and placed between the first valve (12) and the sampling mechanism (3).

4. The sintering dust online sampling device according to claim 1 is characterized in that: The sampling mechanism (3) comprises: a sampling chamber (31) connected to the input mechanism (1) and the output mechanism (4) respectively; A baffle (32) is arranged in the sampling chamber (31) to divide the sampling chamber (31) into a first chamber (311) and a second chamber (312), wherein the first chamber (311) is connected to the input mechanism (1), and the second chamber (312) is connected to the output mechanism (4).

5. The sintering dust online sampling device according to claim 4 is characterized in that: The sampling chamber (31) comprises a vertical section and a conical section, and the baffle (32) is arranged in the vertical section.

6. The sintering dust online sampling device according to claim 5, characterized in that: The sampling mechanism (3) further comprises: A discharge valve (33) is provided at one end of the tapered section.

7. The sintering dust online sampling device according to claim 1 is characterized in that: The output mechanism (4) comprises: an output pipe (41), one end of which is in communication with the sampling mechanism (3) and the other end of which is in communication with the ash conveying pipe (2); The second valve (42) is arranged on the output pipe (41).

8. The sintering dust online sampling device according to claim 7, characterized in that: The output mechanism (4) further comprises: The pressure measuring device (43) is arranged on the output pipe (41) and placed between the output pipe (41) and the second valve (42).

9. The sintering dust online sampling device according to claim 8, characterized in that: The pressure measuring device (43) is a pressure gauge.

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