Blowdown device for dry quenching boiler

Abstract

The utility model discloses a blow-off device for a dry quenching boiler, which comprises a blow-off expander, the side wall of the blow-off expander is inserted and provided with one end of a blow-off pipe, the other end of the blow-off pipe is connected with the inner cavity of the external dry quenching boiler, the inner cavity of the blow-off expander is rotatably provided with a gear ring, and the gear ring is positioned above the blow-off pipe. A rotating rod is installed on the side wall of the sewage discharging expander in an inserted mode, a bevel gear is installed at the end, located in the sewage discharging expander, of the rotating rod, the bevel gear is connected with a gear ring in a meshed mode, a scraping plate is installed on the lower wall of the gear ring, and the side wall of the scraping plate is attached to the inner wall of the sewage discharging expander. According to the sewage discharging expander, scale in the sewage discharging expander can be scraped through the scraping plate, so that the situation that the internal capacity of the expander is reduced, and use is affected is avoided, meanwhile, due to the fact that the gear ring and the bevel gear are both arranged above the sewage discharging pipe, the gear ring and the bevel gear cannot make contact with sewage, and the gear ring and the bevel gear are prevented from being polluted by the sewage.

Description

Technical Field

[0001] This patent relates to the field of boiler waste discharge, and more specifically, to a waste discharge device for a dry coke quenching boiler. Background Art

[0002] The CDQ boiler steam-water system will produce a certain amount of salt and impurities, which will corrode the heating surface, affect heat exchange or block the pipeline. Therefore, the CDQ boiler uses a blowdown device to discharge the "waste". The continuous blowdown device continuously discharges the water with high salt content inside the boiler drum into the continuous blowdown expander to ensure that the salt content inside the boiler is controlled within the normal range.

[0003] However, because secondary steam will be generated inside the sewage expansion tank, it means that the inside of the sewage expansion tank is at a high temperature. Under high temperature conditions, impurities in the sewage will form scale on the inner wall of the sewage expansion tank. If the scale accumulates for a long time, the space in the sewage expansion tank will be reduced, thereby resulting in a decrease in the internal capacity of the expansion tank, positive pressure, and a reduction in water flow. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this patent is to provide a sewage discharge device for a dry quenching coke boiler.

[0005] The technical solution adopted by this patent to solve its technical problem is: a blowdown device for a dry coke quenching boiler, comprising a blowdown expansion device, one end of which is inserted into the side wall of the blowdown expansion device and installed with a blowdown pipe, and the other end of the blowdown pipe is connected to the inner cavity of an external dry coke quenching boiler;

[0006] A gear ring is rotatably mounted in the inner cavity of the sewage expansion device, and the gear ring is located above the sewage pipe. A rotating rod is inserted into the side wall of the sewage expansion device, and a bevel gear is mounted on one end of the rotating rod located inside the sewage expansion device, and the bevel gear is meshed with the gear ring;

[0007] A scraper plate is installed on the lower wall of the gear ring, and the side wall of the scraper plate is in contact with the inner wall of the sewage expansion device.

[0008] Furthermore, the scraper plate includes a plate body, a connecting block, a slide groove, a connecting rod, a spring and a scraper. The upper wall of the plate body is installed with a connecting block, and the connecting block is installed on the lower wall of the gear ring. The side wall of the plate body is opened with a slide groove, and a connecting rod is slidably installed in the slide groove. The scraper is installed at one end of the connecting rod located outside the slide groove. The cross-section of the scraper is U-shaped, and the side wall of the scraper is in contact with the side wall of the plate body. A spring is installed in the slide groove, and the spring is in contact with the side wall of the connecting rod.

[0009] Furthermore, a steam-water separator is installed on the upper wall of the inner cavity of the sewage expansion device, and an exhaust pipe is inserted and installed on the upper wall of the sewage expansion device.

[0010] Furthermore, a motor seat is installed on the side wall of the sewage expansion device, a motor is installed on the upper wall of the motor seat, the motor is electrically connected to an external power source, and an output end of the motor is connected to a rotating rod.

[0011] Furthermore, one end of a drain pipe is inserted into the lower wall of the sewage expansion device, and a valve is installed at the other end of the drain pipe.

[0012] Furthermore, an annular groove is provided on the inner wall of the sewage expansion device, and protrusions are installed on both the left and right sides of the outer wall of the gear ring. The protrusions are inserted into the annular groove, and the protrusions can rotate in the annular groove.

[0013] The beneficial effects of this patent are:

[0014] The device is provided with a scraping plate inside the sewage expansion tank, and the scale inside the sewage expansion tank can be scraped off by the scraping plate, thereby avoiding the reduction of the internal capacity of the expansion tank and affecting the use. At the same time, since the gear ring and the bevel gear in the device are both arranged above the sewage pipe, they will not come into contact with the sewage, thereby avoiding the gear ring and the bevel gear being contaminated by the sewage and affecting the cooperation between the two.

[0015] In addition, the scraper in the scraper plate can slide on the outside of the plate body, so that it can scrape off the scale layer by layer to prevent large pieces of scale from clogging the drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of this patent.

[0017] Figure 2 It is a schematic diagram of the internal structure of this patent.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the scraper plate of this patent.

[0019] Explanation of the reference numerals: 1 sewage expander, 2 sewage pipe, 3 gear ring, 4 rotating rod, 5 conical gear, 6 scraper plate, 61 plate body, 62 connecting block, 63 slide groove, 64 connecting rod, 65 spring, 66 scraper plate, 7 steam-water separator, 8 exhaust pipe, 9 motor seat, 10 motor, 11 drain pipe, 12 valve, 13 annular groove, 14 protrusion. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.

[0021] See also Figure 1 , Figure 2 , Figure 3 This is a schematic diagram of the structure of the patent, which is used for a blowdown device of a dry coke quenching boiler, comprising a blowdown expansion device 1, one end of which is inserted into the side wall of the blowdown expansion device 1 and is installed with a blowdown pipe 2, and the other end of the blowdown pipe 2 is connected to the inner cavity of an external dry coke quenching boiler;

[0022] The blowdown expander 1 can also be called a blowdown expander, which can be regarded as a transfer station for waste water in the dry coke quenching boiler. The waste water in the dry coke quenching boiler can enter the blowdown expander 1 through the blowdown pipe 2, and then be discharged after cooling and waste heat recovery;

[0023] The sewage expansion device 1 provided herein is also provided with a long visible window on the side wall, so that the staff can visually see the liquid level of the internal wastewater;

[0024] A gear ring 3 is rotatably mounted in the inner cavity of the sewage expansion device 1, and the gear ring 3 is located above the sewage pipe 2. A rotating rod 4 is inserted into the side wall of the sewage expansion device 1, and a bevel gear 5 is mounted on one end of the rotating rod 4 located inside the sewage expansion device 1. The bevel gear 5 is meshed and connected with the gear ring 3;

[0025] A scraper plate 6 is installed on the lower wall of the gear ring 3, and the side wall of the scraper plate 6 is in contact with the inner wall of the sewage expander 1;

[0026] The rotating rod 4 can drive the bevel gear 5 to rotate, so that it drives the gear ring 3 to rotate in the sewage expansion tank 1. The inner wall of the sewage expansion tank 1 is cleaned by the scraper plate 6 below to avoid the internal capacity of the sewage expansion tank 1 from being reduced due to scale.

[0027] The scraper plate 6 includes a plate body 61, a connecting block 62, a slide groove 63, a connecting rod 64, a spring 65 and a scraper 66. The connecting block 62 is installed on the upper wall of the plate body 61, and the connecting block 62 is installed on the lower wall of the gear ring 3. The side wall of the plate body 61 is provided with a slide groove 63, and a connecting rod 64 is slidably installed in the slide groove 63. A scraper 66 is installed at one end of the connecting rod 64 located outside the slide groove 63. The cross section of the scraper 66 is U-shaped, and the side wall of the scraper 66 is in contact with the side wall of the plate body 61. A spring 65 is installed in the slide groove 63, and the spring 65 is in contact with the side wall of the connecting rod 64.

[0028] Because the scraped scale and wastewater need to be discharged through the drain pipe 11, in order to prevent the scale from clogging the drain pipe 11, the device sets a slide groove 63 and a connecting rod 64 in the scraping plate 6, so that the scraper 66 can slide on the side wall of the plate body 61, so that during the scraping process, the scale can be scraped off layer by layer, avoiding the generation of large pieces of scale and clogging the drain pipe 11.

[0029] A steam-water separator 7 is installed on the upper wall of the inner cavity of the sewage expansion device 1, and an exhaust pipe 8 is inserted and installed on the upper wall of the sewage expansion device 1;

[0030] Since the sewage discharged into the sewage expansion device 1 is in a high temperature state, a certain amount of steam will be generated. Therefore, the device sets a steam-water separator 7 and an exhaust pipe 8 in the sewage expansion device 1 to utilize the generated steam.

[0031] A motor base 9 is installed on the side wall of the sewage expansion device 1, and a motor 10 is installed on the upper wall of the motor base 9. The motor 10 is electrically connected to an external power source, and the output end of the motor 10 is connected to the rotating rod 4;

[0032] The motor 10 can drive the rotating rod 4 to rotate.

[0033] One end of a drain pipe 11 is inserted into the lower wall of the sewage expansion device 1 , and a valve 12 is installed at the other end of the drain pipe 11 .

[0034] An annular groove 13 is formed on the inner wall of the sewage expansion device 1 , and bumps 14 are installed on both the left and right sides of the outer wall of the gear ring 3 . The bumps 14 are inserted into the annular groove 13 and can rotate in the annular groove 13 .

[0035] When the present invention is working, the sewage in the CDQ boiler will enter the sewage expander 1 through the sewage pipe 2, where it will be cooled and waste heat will be recovered before being discharged. The steam generated by the sewage in the sewage expander 1 will pass through the steam-water separator 7 for steam-water separation, and then be discharged through the exhaust pipe 8 for reuse.

[0036] After the sewage in the sewage expansion device 1 cools down, the valve 12 is opened and the sewage is discharged through the drain pipe 11;

[0037] Because the sewage is at a high temperature, scale will form in the sewage expansion tank 1. Therefore, the device needs to start the motor 10 to drive the rotating rod 4 to rotate, so that the scraper plate 6 can be driven to rotate under the cooperation of the bevel gear 5 and the gear ring 3 to clean the inner wall of the sewage expansion tank 1 to avoid the internal capacity of the sewage expansion tank 1 from being reduced due to scale.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blowdown device for a dry coke quenching boiler, comprising a blowdown expander (1), characterized in that: One end of a sewage pipe (2) is inserted into the side wall of the sewage expansion device (1), and the other end of the sewage pipe (2) is connected to the inner cavity of the external dry quenching boiler; A gear ring (3) is rotatably mounted in the inner cavity of the sewage discharge expansion device (1), and the gear ring (3) is located above the sewage discharge pipe (2). A rotating rod (4) is inserted into the side wall of the sewage discharge expansion device (1), and a bevel gear (5) is mounted on one end of the rotating rod (4) located inside the sewage discharge expansion device (1), and the bevel gear (5) is meshingly connected with the gear ring (3); A scraper plate (6) is mounted on the lower wall of the gear ring (3), and a side wall of the scraper plate (6) is in contact with the inner wall of the sewage expansion device (1).

2. The blowdown device for a dry coke quenching boiler according to claim 1, characterized in that: The scraper plate (6) comprises a plate body (61), a connecting block (62), a slide groove (63), a connecting rod (64), a spring (65) and a scraper plate (66). The upper wall of the plate body (61) is provided with a connecting block (62), and the connecting block (62) is installed on the lower wall of the gear ring (3). The side wall of the plate body (61) is provided with a slide groove (63), and a connecting rod (64) is slidably installed in the slide groove (63). The end of the connecting rod (64) located outside the slide groove (63) is provided with a scraper plate (66), and the cross-section of the scraper plate (66) is U-shaped. The side wall of the scraper plate (66) is in contact with the side wall of the plate body (61). The slide groove (63) is provided with a spring (65), and the spring (65) is in contact with the side wall of the connecting rod (64).

3. The blowdown device for a dry coke quenching boiler according to claim 1, characterized in that: A steam-water separator (7) is installed on the upper wall of the inner cavity of the sewage expansion device (1), and an exhaust pipe (8) is inserted and installed on the upper wall of the sewage expansion device (1).

4. The blowdown device for a dry coke quenching boiler according to claim 1, characterized in that: A motor seat (9) is installed on the side wall of the sewage expansion device (1), a motor (10) is installed on the upper wall of the motor seat (9), the motor (10) is electrically connected to an external power supply, and an output end of the motor (10) is connected to a rotating rod (4).

5. The blowdown device for a dry coke quenching boiler according to claim 1, characterized in that: One end of a drainage pipe (11) is inserted into the lower wall of the sewage expansion device (1), and a valve (12) is installed at the other end of the drainage pipe (11).

6. The blowdown device for a dry coke quenching boiler according to claim 1, characterized in that: The inner wall of the sewage expansion device (1) is provided with an annular groove (13), and the left and right sides of the outer wall of the gear ring (3) are both provided with protrusions (14), the protrusions (14) are inserted into the annular groove (13), and the protrusions (14) can rotate in the annular groove (13).

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