Device for preventing blockage of desulfurization oxidation air pipe of power plant

Abstract

The utility model discloses a device for preventing a desulfurization oxidation air pipe of a power plant from being blocked. The key point of the technical scheme is that the device comprises an air pipe body, two valves are arranged in each vent hole, the sides, close to each other, of the two valves are attached to each other, the two valves can block the vent holes, and the valves are elastic valves; the extension pipe is fixedly connected to the end, away from the closed end, of the air pipe body, and the extension pipe and the air pipe body are coaxial and located outside the slurry; the cleaning disc is arranged in the air pipe body, and the cleaning disc can slide in the air pipe body and the extension pipe in the length direction of the air pipe body so that hardened slurry in the air pipe body can be scraped out through the extension pipe; due to the fact that the valves are arranged to be elastic, the valves can generate elastic deformation in the ventilation process to automatically remove scales attached to the valves so as to prevent the ventilation holes from being blocked, and hardened slurry entering the air pipe body can be scraped out through the arrangement of the cleaning disc.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization in power plants, and more specifically, to a device for preventing the blockage of desulfurization oxidation air ducts in power plants. Background Art

[0002] Generally, power plants are equipped with desulfurization systems to desulfurize substances, thereby reducing environmental pollution.

[0003] In the desulfurization system, the oxidation air duct is usually immersed in the slurry. The oxidation air duct sprays oxygen into the slurry through the jet pipe opened on the pipe. However, in actual use, if the jet hole is small, it is easy for the jet hole to be blocked. If the jet hole is large, the wind pressure cannot meet the requirement when the fan is just started, resulting in the slurry backflowing into the oxidation air duct and the deposition and compaction in the oxidation air duct. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a device for preventing the blockage of the desulfurization and oxidation air ducts of a power plant. The device sets the valve to be elastic so that the valve itself will undergo elastic deformation during the ventilation process to automatically remove scale attached to the valve to prevent the vent holes from being blocked. The slurry that has entered the air duct body can be scraped out by setting a cleaning disc.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for preventing the blockage of the desulfurization oxidation air duct of a power plant, comprising an air duct body, the air duct body extending into the slurry, a plurality of vents being opened outside the air duct body, and one end of the air duct body extending into the slurry being closed;

[0006] Valve, each vent is provided with two valves, the two valves are close to each other and fit together, and the two valves can block the vent, and the valve is set as an elastic valve;

[0007] An extension pipe, the extension pipe is fixedly connected to one end of the air duct body away from the closed end, the extension pipe is coaxial with the air duct body and is located outside the slurry;

[0008] And a cleaning plate, which is arranged in the air duct body and can slide in the air duct body and the extension pipe along the length direction of the air duct body to scrape out the slurry compacted in the air duct body through the extension pipe.

[0009] The utility model is further configured to include an air intake pipe, which is located outside the slurry and is fixedly connected to the top of the extension pipe and communicated with the extension pipe.

[0010] The utility model is further configured to include a sewage pipe, which is fixedly connected to the bottom of the extension pipe, and the connection between the sewage pipe and the extension pipe is located on the side of the connection between the air inlet pipe and the extension pipe away from the slurry.

[0011] The utility model is further configured as follows: it also includes a push-pull rod, the push-pull rod is coaxially arranged with the extension tube, one end of the push-pull rod is fixedly connected to the cleaning plate, and the other end extends out of the extension tube from one end of the extension tube away from the air duct body;

[0012] And a sealing plate, which is fixedly connected to the push-pull rod and coaxial with the extension tube, and the outer side of the sealing plate is tightly fitted on the inner wall of the extension tube. When the cleaning plate contacts the inner cavity of the air duct body away from one end of the extension tube, the sealing plate is located between the connection between the sewage pipe and the extension tube and the connection between the air inlet pipe and the extension tube.

[0013] The utility model is further configured to include: a support seat, the support seat is fixedly connected to the bottom of the extension tube away from the end of the air duct body, and the length direction of the support seat is arranged along the axial direction of the extension tube;

[0014] And a sliding block, wherein the sliding block slides on the supporting seat along the length direction of the supporting seat to drive the push-pull rod to slide along its own length direction.

[0015] The utility model is further configured as follows: a motor is fixedly connected to the top of the sliding block, and the motor is transmission-connected to the push-pull rod to drive the push-pull rod to rotate around its own axis direction;

[0016] A cleaning rod is fixedly connected to one side of the cleaning disc close to the sealing plate. The length direction of the cleaning rod is arranged along the axial direction of the air duct body and contacts the inner wall of the air duct body.

[0017] The utility model is further configured as follows: a plurality of breaking rods are fixedly connected to one side of the cleaning rod facing the rotation direction of the push-pull rod, and the length direction of the breaking rod is perpendicular to the length direction of the cleaning rod.

[0018] The utility model is further configured as follows: a guide rod vertically extending along the length direction of the support seat is fixedly connected to the support seat, and the guide rod passes through the sliding block along its own length direction;

[0019] A lead screw which is arranged along the length direction of the support seat in an axial direction and is rotatably connected to the support seat, and the lead screw passes through the sliding block along its own length direction and is matched with the thread of the sliding block.

[0020] In summary, compared with the prior art, the utility model has the following beneficial effects: the utility model sets the valve to be elastic, so that the valve itself will undergo elastic deformation during the ventilation process to automatically remove scale attached to the valve to prevent the ventilation hole from being blocked, and the slurry that has entered the air duct body can be scraped out by setting the cleaning plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of an embodiment;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0023] Figure 3 for Figure 1 An enlarged schematic diagram of part B;

[0024] Figure 4 is a cross-sectional view of the overall structure of the embodiment;

[0025] Figure 5 for Figure 4 An enlarged schematic diagram of part C of FIG.

[0026] Figure 6 Schematic diagram of a cleaning tray according to an embodiment.

[0027] In the figure: 1. duct body; 11. vent hole; 12. valve; 2. extension pipe; 3. air inlet pipe; 4. drain pipe; 5. support seat; 51. sliding block; 52. motor; 53. guide rod; 54. lead screw; 6. cleaning disk; 61. cleaning rod; 62. breaking rod; 7. push-pull rod; 71. sealing plate. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0029] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0030] Embodiment: A device for preventing blockage of desulfurization and oxidation air ducts in power plants, see attached Figure 1 -Attached Figure 6, comprising an air duct body 1, a valve 12, an extension tube 2 and a cleaning disk 6, wherein the air duct body 1 extends into the slurry, a plurality of vents 11 are provided on the outside of the air duct body 1, and one end of the air duct body 1 extending into the slurry is closed; two valves 12 are arranged in each vent 11, the sides of the two valves 12 close to each other are fitted to each other and the two valves 12 can block the vent 11, and the valve 12 is arranged as an elastic valve 12; the extension tube 2 is fixedly connected to one end of the air duct body 1 away from the closed end, the extension tube 2 is coaxial with the air duct body 1 and is located outside the slurry; the cleaning disk 6 is arranged in the air duct body 1, and the cleaning disk 6 can slide in the air duct body 1 and the extension tube 2 along the length direction of the air duct body 1 to scrape out the hardened slurry in the air duct body 1 through the extension tube 2.

[0031] By setting the valve 12 to be elastic, the valve 12 itself will undergo elastic deformation during the ventilation process to automatically remove scale attached to the valve 12 to prevent the vent 11 from being blocked; when the slurry enters the air duct body 1 and becomes compacted inside the air duct body 1, the sliding of the cleaning plate 6 can push the compacted slurry toward the extension tube 2 and be discharged from the extension tube 2, and the regular movement of the cleaning plate 6 can regularly clean the compacted slurry in the air duct body 1 to prevent the occurrence of air duct blockage problems.

[0032] Specifically, a plurality of ventilation holes are provided on the cleaning plate 6. The provision of the ventilation holes can prevent the air pressure in the air duct body 1 from decreasing when the cleaning plate 6 slides toward the extension tube 2, thereby making it difficult for external slurry to enter the air duct body 1 through the ventilation holes 11 due to the low air pressure in the air duct body 1.

[0033] Specifically, the present embodiment further includes an air intake pipe 3 , which is located outside the slurry. The air intake pipe 3 is fixedly connected to the top of the extension pipe 2 and communicated with the extension pipe 2 .

[0034] Specifically, the present embodiment further comprises a drain pipe 4, which is fixedly connected to the bottom of the extension pipe 2, and the connection between the drain pipe 4 and the extension pipe 2 is located on the side away from the connection between the air inlet pipe 3 and the extension pipe 2. When the hardened slurry scraped out of the cleaning disk 6 moves to the drain pipe 4, the hardened slurry can be discharged downward from the extension pipe 2 through the drain pipe 4 under the gravity of the hardened slurry itself.

[0035] Specifically, the present embodiment also includes a push-pull rod 7 and a sealing plate 71, wherein the push-pull rod 7 is coaxially arranged with the extension tube 2, one end of the push-pull rod 7 is fixedly connected to the cleaning disk 6, and the other end extends out of the extension tube 2 from the end of the extension tube 2 away from the air duct body 1; the sealing plate 71 is fixedly connected to the push-pull rod 7 and is coaxial with the extension tube 2, and the outer side of the sealing plate 71 is tightly fitted on the inner wall of the extension tube 2. When the cleaning disk 6 contacts the inner cavity of the air duct body 1 away from the end of the extension tube 2, the sealing plate 71 is located between the connection between the sewage pipe 4 and the extension tube 2 and the connection between the air inlet pipe 3 and the extension tube 2.

[0036] Specifically, by setting the sealing plate 71, when the cleaning disk 6 contacts the inner cavity of the air duct body 1 away from the end of the extension tube 2, the oxygen in the air inlet pipe 3 can smoothly enter the air duct body 1 without leaking through the drain pipe 4 and the extension tube 2.

[0037] Specifically, this embodiment also includes a support seat 5 and a sliding block 51. The support seat 5 is fixedly connected to the bottom of the extension tube 2 away from the end of the air duct body 1, and the length direction of the support seat 5 is set along the axial direction of the extension tube 2; the sliding block 51 slides on the support seat 5 along the length direction of the support seat 5 to drive the push-pull rod 7 to slide along its own length direction.

[0038] Specifically, a motor 52 is fixedly connected to the top of the sliding block 51, and the motor 52 is transmission-connected to the push-pull rod 7 to drive the push-pull rod 7 to rotate around its own axial direction; a cleaning rod 61 is fixedly connected to the side of the cleaning disk 6 close to the sealing plate 71, and the length direction of the cleaning rod 61 is arranged along the axial direction of the air duct body 1 and contacts the inner wall of the air duct body 1.

[0039] By configuring the motor 52 and the cleaning rod 61 , the push-pull rod 7 can drive the cleaning rod 61 to scrape off the compacted slurry in the air duct body 1 by rotating.

[0040] Specifically, a plurality of crushing rods 62 are fixedly connected to the side of the cleaning rod 61 facing the rotation direction of the push-pull rod 7, and the length direction of the crushing rod 62 is perpendicular to the length direction of the cleaning rod 61. Through the setting of the crushing rod 62, the cleaning rod 61 can be assisted to crush the hardened slurry during the rotation process of the cleaning rod 61.

[0041] Specifically, the support seat 5 is fixedly connected with a guide rod 53 which is vertical along the length direction of the support seat 5, and the guide rod 53 penetrates the sliding block 51 along its own length direction; the support seat 5 is rotatably connected with a lead screw 54 which is axially arranged along the length direction of the support seat 5, and the lead screw 54 penetrates the sliding block 51 along its own length direction and is threadedly matched with the sliding block 51.

[0042] A motor is provided on the support seat 5 to drive the lead screw 54 to rotate.

[0043] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A device for preventing the blockage of desulfurization and oxidation air ducts in power plants, characterized by: The air duct body (1) comprises an air duct body (1), the air duct body (1) extends into the slurry, a plurality of vent holes (11) are provided outside the air duct body (1), and one end of the air duct body (1) extending into the slurry is closed; Valves (12), two valves (12) are arranged in each vent (11), the two valves (12) are close to each other and fit together, and the two valves (12) can block the vent (11), and the valves (12) are arranged as elastic valves (12); An extension pipe (2), the extension pipe (2) being fixedly connected to an end of the air duct body (1) away from the closed end, the extension pipe (2) being coaxial with the air duct body (1) and being located outside the slurry; and a cleaning plate (6), wherein the cleaning plate (6) is arranged in the air duct body (1), and the cleaning plate (6) can slide in the air duct body (1) and the extension tube (2) along the length direction of the air duct body (1) to scrape out the slurry that has hardened in the air duct body (1) through the extension tube (2).

2. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 1, characterized in that: It also comprises an air inlet pipe (3), which is located outside the slurry and is fixedly connected to the top of the extension pipe (2) and communicated with the extension pipe (2).

3. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 2, characterized in that: It also comprises a sewage discharge pipe (4), which is fixedly connected to the bottom of the extension pipe (2), and the connection between the sewage discharge pipe (4) and the extension pipe (2) is located on the side of the connection between the air inlet pipe (3) and the extension pipe (2) away from the slurry.

4. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 3, characterized in that: It also includes a push-pull rod (7), which is coaxially arranged with the extension tube (2), one end of the push-pull rod (7) is fixedly connected to the cleaning plate (6), and the other end extends out of the extension tube (2) from an end of the extension tube (2) away from the air duct body (1); and a sealing plate (71), wherein the sealing plate (71) is fixedly connected to the push-pull rod (7) and is coaxial with the extension tube (2), and the outer side of the sealing plate (71) is tightly fitted on the inner wall of the extension tube (2). When the cleaning plate (6) contacts the inner cavity of the air duct body (1) away from one end of the extension tube (2), the sealing plate (71) is located between the connection between the sewage pipe (4) and the extension tube (2) and the connection between the air inlet pipe (3) and the extension tube (2).

5. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 4, characterized in that: It also comprises a support seat (5), wherein the support seat (5) is fixedly connected to the bottom of the extension tube (2) at one end away from the air duct body (1), and the length direction of the support seat (5) is arranged along the axial direction of the extension tube (2); and a sliding block (51), wherein the sliding block (51) slides on the support seat (5) along the length direction of the support seat (5) to drive the push-pull rod (7) to slide along its own length direction.

6. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 5, characterized in that: A motor (52) is fixedly connected to the top of the sliding block (51), and the motor (52) is transmission-connected to the push-pull rod (7) to drive the push-pull rod (7) to rotate around its own axis. A cleaning rod (61) is fixedly connected to one side of the cleaning disk (6) close to the sealing plate (71); the length direction of the cleaning rod (61) is arranged along the axial direction of the air duct body (1) and contacts the inner wall of the air duct body (1).

7. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 6, characterized in that: A plurality of crushing rods (62) are fixedly connected to the side of the cleaning rod (61) facing the rotation direction of the push-pull rod (7), and the length direction of the crushing rod (62) is perpendicular to the length direction of the cleaning rod (61).

8. A device for preventing blockage of desulfurization and oxidation air ducts in power plants according to claim 7, characterized in that: The support seat (5) is fixedly connected with a guide rod (53) vertically extending along the length direction of the support seat (5), and the guide rod (53) penetrates the sliding block (51) along its length direction; A lead screw (54) is rotatably connected to the support seat (5) and is arranged along the length direction of the support seat (5) in an axial direction. The lead screw (54) penetrates the sliding block (51) along its length direction and is threadedly matched with the sliding block (51).

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