Rotary kiln pressure detection device

Abstract

The utility model relates to the technical field of rotary kiln pressure detection, in particular to a rotary kiln pressure detection device, which is characterized in that a first pressure measuring pipe and a first pressure transmitter connected with the first pressure measuring pipe are arranged on a feeding cover; a sixth pressure measuring pipe and a second pressure transmitter connected with the sixth pressure measuring pipe are arranged on the discharging cover; a second pressure measuring pipe and a third pressure transmitter connected with the second pressure measuring pipe are arranged in the rotary kiln cylinder in the feeding cover area; a seventh pressure measuring pipe and a fourth pressure transmitter connected with the seventh pressure measuring pipe are arranged in the rotary kiln cylinder in the discharge cover area; the pressure in the kiln is measured through the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the fourth pressure transmitter, and the pressure in the kiln can be accurately obtained through multi-point measurement; meanwhile, the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the fourth pressure transmitter are all located outside the kiln, installation is convenient, the pressure transmitter is far away from the high-temperature area, the measuring accuracy of the instrument is further improved, and the service life of the instrument is further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln pressure detection technology, and specifically to a rotary kiln pressure detection device. Background Technology

[0002] Rotary kilns, as a common industrial equipment, are widely used in various industries due to their uniform heating and high production efficiency. In certain atmosphere rotary kilns, maintaining a certain pressure inside the kiln is crucial, as kiln pressure is one of the key factors affecting product quality. By accurately measuring and effectively controlling the kiln pressure, the material modification process can be optimized, thereby significantly improving product quality.

[0003] However, because the rotary kiln shell needs to rotate continuously, the pressure inside the kiln can usually only be measured at the feed hood and discharge hood to monitor the pressure at the feed and discharge ends in real time. This method has certain limitations: First, the feed hood and discharge hood are located at the ends of the kiln body and close to the workshop opening, so the measured pressure data often cannot fully reflect the actual gas pressure inside the kiln; second, the ends are usually the inlet and outlet of gas and materials, and the flow of air and materials can interfere with the pressure measurement, resulting in inaccurate measurement data. Utility Model Content

[0004] Therefore, this utility model provides a rotary kiln pressure detection device to solve the technical problem of inaccurate kiln pressure measurement data caused by the existing rotary kiln pressure detection devices being located at the feed hood and discharge hood.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rotary kiln pressure detection device includes a first pressure measuring tube, a fifth pressure measuring tube, a sixth pressure measuring tube, and a tenth pressure measuring tube. The bottom end of the first pressure measuring tube passes through the feed hood of the rotary kiln and extends into the feed hood. The bottom end of the sixth pressure measuring tube passes through the discharge hood of the rotary kiln and extends into the discharge hood. Both the first and sixth pressure measuring tubes are inclined. The top end of the first pressure measuring tube is connected to a first pressure transmitter, and the top end of the sixth pressure measuring tube is connected to a second pressure transmitter. A second pressure measuring tube is provided on the inner wall of the rotary kiln shell near the feed hood area. A third pressure measuring tube is provided along the axial direction of the rotary kiln shell in the feed hood. The right end of the third pressure measuring tube extends into the feed hood, and the left end extends out of the feed hood. Outside the hood; the left end of the second pressure measuring tube is connected to the right end of the third pressure measuring tube via the fourth pressure measuring tube; the right end of the fifth pressure measuring tube is connected to the left end of the third pressure measuring tube via the first rotary joint, and its left end is connected to the third pressure transmitter; a seventh pressure measuring tube is provided on the inner wall of the rotary kiln shell near the discharge hood area; an eighth pressure measuring tube is provided along the axial direction of the rotary kiln shell of the discharge hood; the left end of the eighth pressure measuring tube extends into the discharge hood, and the right end extends out of the discharge hood; the right end of the seventh pressure measuring tube is connected to the left end of the eighth pressure measuring tube via the ninth pressure measuring tube; the left end of the tenth pressure measuring tube is connected to the right end of the eighth pressure measuring tube via the second rotary joint, and its right end is connected to the fourth pressure transmitter.

[0007] Preferably, the right side of the second pressure measuring tube is bent radially along the rotary kiln body to form a first protrusion; the left side of the seventh pressure measuring tube is bent radially along the rotary kiln body to form a second protrusion; the distance h1 between the top of the first protrusion and the inner wall of the rotary kiln body and the distance h2 between the top of the second protrusion and the inner wall of the rotary kiln body are both greater than the thickness of the material inside the rotary kiln body.

[0008] Preferably, the diameter of the top region of the first protrusion is smaller than the diameter of the second pressure measuring tube; the diameter of the top region of the second protrusion is smaller than the diameter of the seventh pressure measuring tube.

[0009] Preferably, a first ball valve is installed between the first pressure measuring tube and the first pressure transmitter; a fourth ball valve is installed between the sixth pressure measuring tube and the second pressure transmitter; a second ball valve is installed between the fifth pressure measuring tube and the third pressure transmitter; and a fifth ball valve is installed between the tenth pressure measuring tube and the fourth pressure transmitter.

[0010] Preferably, one end of the first ball valve is connected to the top of the first pressure measuring tube, and the other end is connected to the first pressure transmitter via a hose; one end of the fourth ball valve is connected to the top of the sixth pressure measuring tube, and the other end is connected to the second pressure transmitter via a hose; one end of the second ball valve is connected to the left end of the fifth pressure measuring tube, and the other end is connected to the third pressure transmitter via a hose; one end of the fifth ball valve is connected to the right end of the tenth pressure measuring tube, and the other end is connected to the fourth pressure transmitter via a hose.

[0011] Preferably, the fifth pressure measuring tube is connected to a first backflush tube for injecting backflush gas; the tenth pressure measuring tube is connected to a second backflush tube for injecting backflush gas; the first backflush tube is equipped with a third ball valve; and the second backflush tube is equipped with a sixth ball valve.

[0012] This utility model has at least the following beneficial effects:

[0013] The instrument is equipped with a first pressure measuring tube and a first pressure transmitter connected to it in the feed hood; a sixth pressure measuring tube and a second pressure transmitter connected to it in the discharge hood; a second pressure measuring tube and a third pressure transmitter connected to it in the rotary kiln shell in the feed hood area; and a seventh pressure measuring tube and a fourth pressure transmitter connected to it in the rotary kiln shell in the discharge hood area. The pressure inside the kiln is measured by the first, second, third, and fourth pressure transmitters. This multi-point measurement can accurately obtain the pressure inside the kiln. At the same time, the first, second, third, and fourth pressure transmitters are all located outside the kiln, which is convenient for installation and away from high-temperature areas, further improving the accuracy and service life of the instrument.

[0014] Therefore, the rotary kiln pressure detection device of this utility model has the advantages of accurate measurement, easy installation, and long service life. Attached Figure Description

[0015] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 This is a front view of a rotary kiln pressure detection device according to the present invention;

[0018] Figure 2 This utility model relates to a rotary kiln pressure detection device. Figure 1 A magnified view of part A;

[0019] Figure 3 This utility model relates to a rotary kiln pressure detection device. Figure 1 A magnified view of part B;

[0020] Figure 4 This utility model relates to a rotary kiln pressure detection device. Figure 2 Enlarged view of part C;

[0021] Figure 5 This utility model relates to a rotary kiln pressure detection device. Figure 3 Enlarged view of part D;

[0022] Figure 6 This is a left view of a rotary kiln pressure detection device according to the present invention;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First pressure measuring tube; 2. Second pressure measuring tube; 201. First extension; 3. Third pressure measuring tube; 4. Fourth pressure measuring tube; 5. Fifth pressure measuring tube; 6. First rotary joint; 7. First backflush air pipe; 8. Sixth pressure measuring tube; 9. Seventh pressure measuring tube; 901. Second extension; 10. Eighth pressure measuring tube; 11. Ninth pressure measuring tube; 12. Tenth pressure measuring tube; 13. Second rotary joint; 14. Second backflush air pipe; 15. First ball valve; 16. Second ball valve; 17. Third ball valve; 18. Fourth ball valve; 19. Fifth ball valve; 20. Sixth ball valve; 21. Rotary kiln body; 22. Feed hood; 23. Discharge hood. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0027] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.

[0028] This utility model provides a rotary kiln pressure detection device, such as... Figures 1 to 6As shown, a first pressure measuring tube 1, a fifth pressure measuring tube 5, a sixth pressure measuring tube 8, and a tenth pressure measuring tube 12 are provided. The bottom end of the first pressure measuring tube 1 passes through the feed hood 22 of the rotary kiln and extends into the feed hood 22; the bottom end of the sixth pressure measuring tube 8 passes through the discharge hood 23 of the rotary kiln and extends into the discharge hood 23. To prevent material from accumulating on the first pressure measuring tube 1 and the sixth pressure measuring tube 8, both the first pressure measuring tube 1 and the sixth pressure measuring tube 8 are inclined. The top end of the first pressure measuring tube 1 is connected to a first pressure transmitter, and the top end of the sixth pressure measuring tube 8 is connected to a second pressure transmitter. In this way, the first pressure transmitter can measure the pressure in the feed hood 22 area, and the second pressure transmitter can measure the pressure in the discharge hood 23 area. To further obtain the kiln pressure, a second pressure measuring tube 2 is welded to the inner wall of the rotary kiln shell 21 near the feed hood 22. A third pressure measuring tube 3 is provided along the axial direction of the rotary kiln shell 21 in the feed hood 22, with its right end extending into the feed hood 22 and its left end extending out of the feed hood 22. The left end of the second pressure measuring tube 2 is connected to the right end of the third pressure measuring tube 3 through a fourth pressure measuring tube 4. The right end of the fifth pressure measuring tube 5 is connected to the left end of the third pressure measuring tube 3 through a first rotary joint 6, and its left end is connected to a third pressure transmitter. A seventh pressure measuring tube 9 is welded to the inner wall of the rotary kiln shell 21 near the discharge hood 23. An eighth pressure measuring tube 10 is provided along the axial direction of the rotary kiln shell 21 in the discharge hood 23, with its left end extending into the discharge hood 23 and its right end extending out of the discharge hood 23. The right end of the seventh pressure measuring tube 9 is connected to the left end of the eighth pressure measuring tube 10 through a ninth pressure measuring tube 11. The left end of the tenth pressure measuring tube 12 is connected to the right end of the eighth pressure measuring tube 10 via the second rotary joint 13, and its right end is connected to the fourth pressure transmitter. Thus, the third pressure transmitter measures the pressure inside the rotary kiln near the feed hood 22, and the fourth pressure transmitter measures the pressure inside the rotary kiln near the discharge hood 23. Through multi-point pressure measurement by the first, second, third, and fourth pressure transmitters, the kiln pressure is accurately obtained, solving the technical problem of inaccurate kiln pressure measurement data caused by the existing technology's kiln pressure detection settings at the feed hood and discharge hood.

[0029] Preferably, to prevent material from entering the second pressure measuring pipe 2 and the seventh pressure measuring pipe 9 and causing blockage, the right side of the second pressure measuring pipe 2 is bent radially along the rotary kiln body 21 to form a first protrusion 201, and the left side of the seventh pressure measuring pipe 9 is bent radially along the rotary kiln body 21 to form a second protrusion 901. The distance h1 between the top of the first protrusion 201 and the inner wall of the rotary kiln body 21 and the distance h2 between the top of the second protrusion 901 and the inner wall of the rotary kiln body 21 are both greater than the thickness of the material inside the rotary kiln body 21.

[0030] Preferably, to further prevent materials inside the kiln from entering the second pressure measuring tube 2 and the seventh pressure measuring tube 9 and causing blockage, the diameter of the top area of ​​the first protrusion 201 is smaller than the diameter of the second pressure measuring tube 2, and the diameter of the top area of ​​the second protrusion 901 is smaller than the diameter of the seventh pressure measuring tube 9.

[0031] Preferably, to facilitate the closure of the first pressure measuring tube 1, the fifth pressure measuring tube 5, the sixth pressure measuring tube 8, and the tenth pressure measuring tube 12, a first ball valve 15 is installed between the first pressure measuring tube 1 and the first pressure transmitter, a fourth ball valve 18 is installed between the sixth pressure measuring tube 8 and the second pressure transmitter, a second ball valve 16 is installed between the fifth pressure measuring tube 5 and the third pressure transmitter, and a fifth ball valve 19 is installed between the tenth pressure measuring tube 12 and the fourth pressure transmitter.

[0032] Preferably, to facilitate the installation and connection of the first pressure transmitter, the second pressure transmitter, the third pressure transmitter, and the fourth pressure transmitter, one end of the first ball valve 15 is connected to the top of the first pressure measuring tube 1, and the other end is connected to the first pressure transmitter via a hose; one end of the fourth ball valve 18 is connected to the top of the sixth pressure measuring tube 8, and the other end is connected to the second pressure transmitter via a hose; one end of the second ball valve 16 is connected to the left end of the fifth pressure measuring tube 5, and the other end is connected to the third pressure transmitter via a hose; one end of the fifth ball valve 19 is connected to the right end of the tenth pressure measuring tube 12, and the other end is connected to the fourth pressure transmitter via a hose.

[0033] Preferably, to clear any material that may enter the second pressure measuring tube 2 and the seventh pressure measuring tube 9, maintain their unobstructed flow, and improve measurement accuracy, the fifth pressure measuring tube 5 is connected to a first backflush pipe 7 for injecting backflush gas. The backflush gas can be the atmospheric gas injected into the kiln. Specifically, the first backflush pipe 7 is connected to the pipeline for injecting atmospheric gas into the kiln. The tenth pressure measuring tube 12 is connected to a second backflush pipe 14 for injecting backflush gas. This backflush gas can also be the atmospheric gas injected into the kiln. Specifically, the second backflush pipe 14 is also connected to the pipeline for injecting atmospheric gas into the kiln. Simultaneously, a third ball valve 17 is provided in the first backflush pipe 7, and a sixth ball valve 20 is provided in the second backflush pipe 14. During backflush, the third ball valve 17 and the sixth ball valve 20 are opened, while the second ball valve 16 and the fifth ball valve 19 are closed.

[0034] The present application has been described in a relatively specific and detailed manner above through general descriptions and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present application.

Claims

1. A rotary kiln pressure detection device, characterized in that, It includes a first pressure measuring tube (1), a fifth pressure measuring tube (5), a sixth pressure measuring tube (8), and a tenth pressure measuring tube (12); the bottom end of the first pressure measuring tube (1) passes through the feed hood (22) of the rotary kiln and extends into the feed hood (22); the bottom end of the sixth pressure measuring tube (8) passes through the discharge hood (23) of the rotary kiln and extends into the discharge hood (23); the first pressure measuring tube (1) and the sixth pressure measuring tube (8) are both inclined, and the tenth pressure measuring tube (12) is inclined into the discharge hood (23). A pressure measuring tube (1) is connected to a first pressure transmitter at its top end, and a pressure measuring tube (8) is connected to a second pressure transmitter at its top end; a second pressure measuring tube (2) is provided on the inner wall of the rotary kiln shell (21) near the feed hood (22); a third pressure measuring tube (3) is provided on the feed hood (22) along the axial direction of the rotary kiln shell (21); the right end of the third pressure measuring tube (3) extends into the feed hood (22), and the left end extends out of the feed hood (22); The left end of the second pressure measuring tube (2) is connected to the right end of the third pressure measuring tube (3) through the fourth pressure measuring tube (4); the right end of the fifth pressure measuring tube (5) is connected to the left end of the third pressure measuring tube (3) through the first rotary joint (6), and its left end is connected to the third pressure transmitter; the inner wall of the rotary kiln body (21) of the rotary kiln near the discharge hood (23) area is provided with a seventh pressure measuring tube (9); the discharge hood (23) is provided with an eighth pressure measuring tube (10) along the axial direction of the rotary kiln body (21); the left end of the eighth pressure measuring tube (10) extends into the discharge hood (23), and the right end extends out of the discharge hood (23); the right end of the seventh pressure measuring tube (9) is connected to the left end of the eighth pressure measuring tube (10) through the ninth pressure measuring tube (11); the left end of the tenth pressure measuring tube (12) is connected to the right end of the eighth pressure measuring tube (10) through the second rotary joint (13), and its right end is connected to the fourth pressure transmitter.

2. The rotary kiln pressure detection device according to claim 1, characterized in that, The second pressure measuring tube (2) is bent radially along the rotary kiln body (21) on the right side to form a first protrusion (201); the seventh pressure measuring tube (9) is bent radially along the rotary kiln body (21) on the left side to form a second protrusion (901); the distance h1 between the top of the first protrusion (201) and the inner wall of the rotary kiln body (21) and the distance h2 between the top of the second protrusion (901) and the inner wall of the rotary kiln body (21) are both greater than the thickness of the material inside the rotary kiln body (21).

3. The rotary kiln pressure detection device according to claim 2, characterized in that, The diameter of the top region of the first protrusion (201) is smaller than the diameter of the second pressure measuring tube (2); the diameter of the top region of the second protrusion (901) is smaller than the diameter of the seventh pressure measuring tube (9).

4. The rotary kiln pressure detection device according to claim 1, characterized in that, A first ball valve (15) is installed between the first pressure measuring tube (1) and the first pressure transmitter; a fourth ball valve (18) is installed between the sixth pressure measuring tube (8) and the second pressure transmitter; a second ball valve (16) is installed between the fifth pressure measuring tube (5) and the third pressure transmitter; and a fifth ball valve (19) is installed between the tenth pressure measuring tube (12) and the fourth pressure transmitter.

5. The rotary kiln pressure detection device according to claim 4, characterized in that, One end of the first ball valve (15) is connected to the top of the first pressure measuring tube (1), and the other end is connected to the first pressure transmitter via a hose; one end of the fourth ball valve (18) is connected to the top of the sixth pressure measuring tube (8), and the other end is connected to the second pressure transmitter via a hose; one end of the second ball valve (16) is connected to the left end of the fifth pressure measuring tube (5), and the other end is connected to the third pressure transmitter via a hose; one end of the fifth ball valve (19) is connected to the right end of the tenth pressure measuring tube (12), and the other end is connected to the fourth pressure transmitter via a hose.

6. A rotary kiln pressure detection device according to any one of claims 1 to 5, characterized in that, The fifth pressure measuring tube (5) is connected to the first backflush tube (7) for injecting backflush gas; the tenth pressure measuring tube (12) is connected to the second backflush tube (14) for injecting backflush gas; the first backflush tube (7) is equipped with a third ball valve (17); the second backflush tube (14) is equipped with a sixth ball valve (20).

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