Kiln crown diffusing device

Abstract

The utility model discloses a furnace crown diffusing device which comprises a pull rod, a counter weight, a first support lug, a second support lug, a first support, a second support, a sealing cover, a valve body, a dust falling device, an air cylinder, a pull rope and a limiting plate. The device is installed on the top of a kiln crown dust removal vertical pipe, a sealing cover with an upward opening is arranged on the upper portion of the valve body, a dust falling device is arranged in the valve body, one end of the pull rod is connected with the top end of a pneumatic rod of the air cylinder through a pull rope, the air cylinder is fixedly installed on a second support, and the other end of the pull rod is fixedly connected with a balance weight. The pull rod is connected with the first support lug and the second support lug through fasteners, the second support lug is fixedly connected with the sealing cover, the first support lug is installed on the first support and fixedly connected with the valve body, and the pull rod drives the sealing cover to be opened and closed through vertical movement of the air cylinder with the first support lug as a rotating shaft. The problems that too high pressure in the kiln top section in the kiln is not beneficial to upward rising of hot air flow on the lower portion of the kiln body and too high pressure leads to production safety are solved, the material preheating effect of the kiln top preheating section is improved, and the quality of finished products is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of lime vertical kiln equipment, specifically a kiln top venting device. Background Technology

[0002] Currently, the main equipment for lime calcination processes is rotary kilns and vertical lime kilns. With technological advancements, increased mechanization, and stricter environmental protection requirements, traditional earthen kilns are no longer used. In particular, the gas-fired vertical lime kiln, which has developed in recent years, is the primary type of vertical kiln. It boasts advantages such as low investment, short construction period, low operating costs, simple operation, low fuel consumption per unit of finished product, high utilization coefficient per unit volume, and small footprint, making it popular among many steel, building materials, and chemical companies. However, it also has drawbacks. Specifically, if the pressure at the kiln top is too high and pressure relief is not implemented, it hinders the upward flow of hot air from the lower part of the kiln, leading to poor or uneven preheating in the kiln top preheating section. Furthermore, excessively high internal pressure can cause unforeseen production safety issues.

[0003] To address the above technical problems, this utility model designs a kiln top venting device, which features simple structure, convenient installation and manufacturing, stable operation, convenient use and maintenance, flexible operation, and tight sealing. Utility Model Content

[0004] To solve the above technical problems, this utility model provides a kiln top venting device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a kiln top venting device, comprising a pull rod, a counterweight, a first support lug, a second support lug, a first support, a second support, a sealing cover, a valve body, a dust collector, a cylinder, a pull rope, and a limiting plate. The device is installed on the top of the kiln top dust removal riser and is connected to the upper flange of the kiln top dust removal riser via a flange at the lower end of the valve body using fasteners. A sealing cover with an upward opening is provided on the upper part of the valve body, and a dust collector is installed inside the valve body. One end of the pull rod is connected to the top of the pneumatic rod of the cylinder via a pull rope. The cylinder is fixedly installed on the second support, and the other end of the pull rod is fixedly connected to a counterweight. The pull rod is connected to the first and second support lugs respectively via fasteners. The second support ear is fixedly connected to the sealing cover, and the first support ear is fixedly installed on the first support and fixedly connected to the valve body. The pull rod rotates around the first support ear as a pivot, and drives the opening and closing of the sealing cover by the pneumatic rod of the cylinder. The fasteners used to connect the first and second support ears to the pull rod are used as pins and can effectively prevent loosening and falling off. The second support is fixedly installed on the dust removal riser on the top of the kiln. The cylinder is connected to the second support through fasteners. When the sealing cover is closed, the annular seal with the valve body adopts a contact seal. The contact sealing surfaces of both are inclined surfaces, and a groove is provided on the sealing inclined surface of the annular seal. A sealing ring is provided in the groove to enhance the sealing effect.

[0006] In this utility model, the dust collector is composed of guide vanes and a central tube. Each guide vane is welded to the central tube. The dust collector is connected to the circular annular tube of the valve body by welding. The dust collector is positioned at the center of the upper and lower parts of the circular annular tube of the valve body.

[0007] In this utility model, the valve body is composed of an annular seal, a circular ring tube, and a flange. The sealing surface of the annular seal is an inclined surface with a groove on the inclined surface.

[0008] In this invention, the sealing cap has a circular disc structure and the contact sealing surface is an inclined surface.

[0009] In this utility model, there are two sets of limiting plates, which are arranged on both sides of the second support ear. The limiting plates are connected to the sealing cover. A groove of appropriate width is provided in the middle of one end of the limiting plate, and the groove is facing upward for placing the pull rod.

[0010] In this utility model, the valve body, dust collector, and sealing cover are made of materials with high heat resistance and wear resistance.

[0011] This utility model has the following beneficial effects:

[0012] 1. The device has a dust collector inside the valve body. When the sealing cover is opened to release pressure, large dust particles move under the influence of the exhaust gas. When the fast-moving exhaust gas encounters the dust collector, the wind speed will drop significantly due to the influence of the guide vanes, causing the large dust particles to fall back into the kiln, thus preventing the large dust particles from leaking out and polluting the environment.

[0013] 2. It solved the problems of excessive pressure in the kiln top section hindering the upward flow of hot air in the lower part of the kiln and causing production safety issues due to excessive pressure, improved the preheating effect of materials in the kiln top preheating section, and ensured the quality of finished products.

[0014] 3. The device has a simple structure, is easy to install and manufacture, operates stably, is convenient to use and maintain, is flexible in operation, and is tightly sealed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a kiln top venting device according to the present invention;

[0016] Figure 2 This is a left view of a kiln top venting device according to the present invention;

[0017] Figure 3 This is a top view of a kiln top venting device according to the present invention;

[0018] Figure 4 This is an enlarged view at point I of the structural schematic diagram of a kiln top venting device according to this utility model.

[0019] Figure 5 This is a schematic diagram of the dust collector in this utility model;

[0020] Figure 6 This is a schematic diagram of the valve body in this utility model;

[0021] In the diagram: 1. Pull rod; 2. Limiting plate; 3. Support lug 2; 4. Sealing cover; 5. Counterweight; 6. Valve body; 601. Annular seal; 602. Circular ring pipe; 603. Flange; 7. Fastener; 8. Kiln top dust removal riser; 9. Support 2; 10. Cylinder; 11. Pull rope; 12. Support 1; 13. Support lug 1; 14. Dust collector; 1401. Central tube; 1402. Guide vane; 15. Sealing ring. Detailed Implementation

[0022] 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.

[0023] like Figures 1 to 6 As shown, a kiln top dust collection device includes a pull rod 1, a counterweight 5, a first support lug 13, a second support lug 3, a first support 12, a second support 9, a sealing cover 4, a valve body 6, a dust collector 14, a cylinder 10, a pull rope 11, and a limiting plate 2. The device is installed on the top of a kiln top dust collection riser 8 and is connected to the upper flange of the kiln top dust collection riser 8 via a flange 603 at the lower end of the valve body 6, using fasteners 7. A sealing cover 4 with an upward opening is provided on the upper part of the valve body 6, and a dust collector 14 is installed inside the valve body 6. One end of the pull rod 1 is connected to the top of the pneumatic rod of the cylinder 10 via the pull rope 11. The cylinder 10 is fixedly installed on the second support 9, and the other end of the pull rod 1 is fixedly connected to the counterweight 5. The pull rod 1 is connected to the first support lug 13 and the second support lug 3 via fasteners. The sealing cover 4 is fixedly connected to the support 13, which is fixedly installed on the support 12 and fixedly connected to the valve body 6. The pull rod 1 rotates around the support 13 and moves up and down through the pneumatic rod of the cylinder 10 to drive the opening and closing of the sealing cover 4. The fastener 7 used to connect the support 13, the support 2 3 and the pull rod 1 serves as a pin and can effectively prevent loosening and falling off. The support 2 9 is fixedly installed on the dust removal riser 8 on the kiln top. The cylinder 10 is connected to the support 2 9 through the fastener 7. When the sealing cover 4 is closed, it is in contact with the annular seal 601 of the valve body 6. The contact sealing surfaces of both are inclined surfaces, and a groove is provided on the sealing inclined surface of the annular seal 601. A sealing ring 15 is provided in the groove to enhance the sealing effect.

[0024] like Figures 1 to 6 As shown, a kiln top venting device is provided. The dust collector 14 is composed of guide vanes 1402 and a central tube 1401. Each guide vane 1402 is welded to the central tube 1401. The dust collector 14 is welded to the circular annular tube 602 of the valve body 6. The dust collector 14 is positioned at the center of the circular annular tube 602 of the valve body 6.

[0025] like Figures 1 to 6 As shown, a kiln top venting device is provided. The valve body 6 is composed of an annular seal 601, a circular ring pipe 602, and a flange 603. The sealing surface of the annular seal 601 is an inclined surface with a groove on the inclined surface.

[0026] like Figures 1 to 6 As shown, a kiln top venting device is described, wherein the sealing cover 4 is a circular disc structure with an inclined contact sealing surface.

[0027] like Figures 1 to 6 As shown, a kiln top venting device is provided, wherein the limiting plate 2 is in two sets and is provided on both sides of the second support lug 3. The limiting plate 2 is connected to the sealing cover 4. A groove of appropriate width is provided at the middle position of one end of the limiting plate 2, and the groove is facing upward for placing the pull rod 1.

[0028] like Figures 1 to 6 As shown, a kiln top venting device is provided, wherein the valve body 6, dust collector 14, and sealing cover 4 are made of heat-resistant and wear-resistant materials.

[0029] The working process of this utility model is as follows:

[0030] like Figure 1 As shown, the sealing cover 4 at the position indicated by the double-dotted line is in the open state. During normal operation, the device is in a sealed state, with the pneumatic rod of cylinder 10 extended. When the instrument detects excessive pressure at the kiln top exceeding the specified value, pressure relief is required. At this time, the instrument control circuit sends an action signal, and the pull rod 1, with the lug 13 as its pivot, moves downwards via the pneumatic rod of cylinder 10, causing the pull rope 11 to drive the pull rod 1 and slowly open the sealing cover 4. Once the pneumatic rod of cylinder 10 has extended to the specified stroke, cylinder 10 stops operating, and pressure relief continues. When the instrument detects that the kiln top pressure has reached the specified normal value, the pneumatic rod of cylinder 10 moves upwards. Under the weight of the counterweight 5 at the other end of pull rod 1, the sealing cover 4 slowly closes and returns to its normal sealing state. This process repeats continuously to ensure smooth production. This device features a simple structure, convenient installation and manufacturing, stable operation, convenient use and maintenance, flexible operation, and tight sealing.

[0031] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features, unless otherwise stated in the description of this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kiln top venting device, characterized in that: The device includes a pull rod (1), a counterweight (5), a first support lug (13), a second support lug (3), a first support (12), a second support (9), a sealing cover (4), a valve body (6), a dust collector (14), a cylinder (10), a pull rope (11), and a limiting plate (2). The device is installed on the top of the dust removal riser (8) at the kiln top and is connected to the upper flange of the dust removal riser (8) at the kiln top via the flange (603) at the lower end of the valve body (6). The connection is made using fasteners. (7) A sealing cover (4) with an upward opening is provided on the upper part of the valve body (6). A dust collector (14) is provided inside the valve body (6). One end of the pull rod (1) is connected to the top of the pneumatic rod of the cylinder (10) through a pull rope (11). The cylinder (10) is fixedly installed on the support second (9). The other end of the pull rod (1) is fixedly connected to a counterweight (5). The pull rod (1) is connected to the first support ear (13) and the second support ear (3) respectively through fasteners. The second (3) is fixedly connected to the sealing cover (4), the first (13) is fixedly installed on the first (12) and fixedly connected to the valve body (6), the pull rod (1) is rotated around the first (13) and drives the sealing cover (4) to open and close through the pneumatic rod of the cylinder (10). The fastener (7) used to connect the first (13), the second (3) and the pull rod (1) is used as a pin and can effectively prevent loosening and falling off. The second (9) is fixedly installed on the dust removal riser (8) on the top of the kiln. The cylinder (10) is connected to the second (9) through the fastener (7). When the sealing cover (4) is closed, it is in contact with the annular seal (601) of the valve body (6). The contact sealing surfaces of both are inclined surfaces and a groove is provided on the sealing inclined surface of the annular seal (601). A sealing ring (15) is provided in the groove to enhance the sealing effect.

2. The kiln top venting device according to claim 1, characterized in that: The dust collector (14) consists of a guide vane (1402) and a central tube (1401). Each guide vane (1402) is welded to the central tube (1401). The dust collector (14) is welded to the circular ring tube (602) of the valve body (6). The dust collector (14) is positioned at the center of the circular ring tube (602) of the valve body (6).

3. The kiln top venting device according to claim 1, characterized in that: The valve body (6) is composed of an annular seal (601), a circular ring pipe (602), and a flange (603). The sealing surface of the annular seal (601) is an inclined surface with a groove on the inclined surface.

4. The kiln top venting device according to claim 1, characterized in that: The sealing cover (4) has a circular disc structure and the contact sealing surface is an inclined surface.

5. The kiln top venting device according to claim 1, characterized in that: The limiting plate (2) consists of two sets and is set on both sides of the second support ear (3). The limiting plate (2) is connected to the sealing cover (4). A groove of appropriate width is set at the middle position of one end of the limiting plate (2), and the groove is facing upward for placing the pull rod (1).

6. The kiln top venting device according to claim 1, characterized in that: The valve body (6), dust collector (14), and sealing cover (4) are made of heat-resistant and wear-resistant materials.

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