Thermal power plant boiler flue gas ash removal device

Abstract

The utility model provides a flue gas ash removal device for a thermal power plant boiler, and relates to the technical field of thermal power plant boilers. The outer part of the treatment tank main body is fixedly connected with a support frame; a smoke inlet pipe is fixedly connected to the center of the bottom end surface of the treatment tank main body; the top end surface of the treatment tank main body is in bolt fastening connection with a filter; two mounting frames are symmetrically and fixedly connected to the outer part of the treatment tank main body; a flue gas filter screen is fixedly connected in the treatment tank main body; the bottom end surface of the flue gas filter screen is fixedly connected with a flue gas shunting seat; and the flue gas shunting seat is aligned with the flue gas inlet pipe in position. When flue gas enters the treatment tank main body through the flue gas inlet pipe, the flue gas can blow and drive the flow guide frame to rotate, and then through a series of transmission, the elastic strip flaps the flue gas inlet pipe, so that the flue gas inlet pipe vibrates, and the problems that water vapor in the flue gas is easy to condense and is mixed with dust to form wet ash with relatively high viscosity, and the dust is polluted are solved. And the dust is adhered to the inner wall of the smoke inlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology in thermal power plants, and in particular to a flue gas cleaning device for thermal power plant boilers. Background Technology

[0002] In thermal power plants, boilers are typically used to convert heat energy into electrical energy. During the operation of boilers, a large amount of flue gas is emitted. As this flue gas disperses, it carries some lightweight dust particles. To prevent these dust particles from polluting the environment, flue gas cleaning devices for thermal power plants are usually used to clean the dust particles in the flue gas. Existing flue gas cleaning devices for thermal power plants typically consist of a treatment tank body, a flue gas inlet pipe, a filter screen, a spray frame, and a filter.

[0003] For example, utility model application CN202321769224.X discloses a boiler flue gas processor, specifically including a main body; the main body has a hollow cavity inside, and an ash outlet pipe is provided on one side of the bottom of the hollow cavity, and a flue gas outlet is provided on the top of the main body; a fixing ring is fixedly connected to the main body, and a sliding groove is provided on the fixing ring; by setting the rotation of the motor to drive the gear shaft to rotate, the cleaning block fixedly connected to the rotating ring will discharge the impurities at the bottom of the main body from the ash outlet pipe, and a synchronous belt is also meshed on the gear shaft, so that the gear rod at the top of the linkage shaft drives the gear disk to rotate on the top of the diversion platform, and the cleaning rod fixedly connected to the gear disk will clean the impurities accumulated on the filter screen to the bottom of the hollow cavity of the main body.

[0004] However, in terms of current traditional flue gas cleaning devices for thermal power plant boilers, the flue gas temperature emitted by the boiler is relatively high. When the high-temperature flue gas flows in the flue gas inlet pipe, the temperature inside the flue gas inlet pipe is usually lower than the temperature of the flue gas. This makes it easy for water vapor in the flue gas to condense and mix with dust to form highly sticky wet ash. This ash then adheres to the inner wall of the flue gas inlet pipe, resulting in a reduction in the flue gas flow cross section and an increase in resistance. This not only obstructs the flow of flue gas but also affects the operating efficiency of the flue gas cleaning device. Utility Model Content

[0005] In view of this, the present invention provides a flue gas cleaning device for thermal power plant boilers, which has an elastic strip capable of cleaning ash and scale inside the flue gas inlet pipe. During flue gas cleaning, as the flue gas enters the main body of the treatment tank through the flue gas inlet pipe, it blows and drives a guide frame to rotate. The rotation of the guide frame drives a transmission shaft to rotate, which in turn drives a first pulley to rotate. The rotation of the first pulley, in turn, drives a second pulley to rotate via a transmission belt. The rotation of the second pulley drives a fixed shaft to rotate, which in turn drives a first bevel gear to rotate. The rotation of the first bevel gear drives a second bevel gear meshing with it to rotate, which in turn drives a mounting column to rotate. The rotation of the mounting column causes the elastic strip to tap the flue gas inlet pipe, cleaning the ash and scale inside.

[0006] This utility model provides a flue gas cleaning device for a thermal power plant boiler, specifically including: a treatment tank body; a support frame fixedly connected to the outside of the treatment tank body; a flue gas inlet pipe fixedly connected to the center of the bottom end face of the treatment tank body; a filter bolted to the top end face of the treatment tank body; two mounting brackets symmetrically fixedly connected to the outside of the treatment tank body; a flue gas filter screen fixedly connected inside the treatment tank body; a flue gas diverter fixedly connected to the bottom end face of the flue gas filter screen; the flue gas diverter is aligned with the position of the flue gas inlet pipe; a spray head fixedly connected to the upper part of the treatment tank body; and a spray pipe fixedly connected to the top end face of the spray head.

[0007] Optionally, a transmission shaft is rotatably connected to the lower part of the main body of the treatment tank; a drive guide frame is coaxially fixedly connected to the outside of the transmission shaft; the drive guide frame is aligned with the position of the smoke inlet pipe.

[0008] Optionally, the transmission shaft is symmetrically and coaxially fixedly connected to two first pulleys on its exterior; a fixed shaft is rotatably connected to the lower part of each of the two mounting brackets; a second pulley is coaxially and fixedly connected to the exterior of each of the two fixed shafts; and the two second pulleys are respectively connected to the two first pulleys via transmission belts.

[0009] Optionally, a first bevel gear is coaxially fixedly connected to the inner side of each of the two fixed rotating shafts; a connecting shaft is rotatably connected to each of the two mounting brackets; a second bevel gear is coaxially fixedly connected to the outer side of each of the two connecting rotating shafts; the two second bevel gears mesh with the two first bevel gears respectively; a mounting post is coaxially fixedly connected to the lower part of each of the two connecting rotating shafts; multiple sets of elastic strips are arranged in a circular array on the outer side of each mounting post; the multiple sets of elastic strips are aligned with the position of the smoke inlet pipe.

[0010] Optionally, a drive motor is bolted to the bottom end face of the treatment tank body; a transmission gear is coaxially fixedly connected to the outside of the drive motor shaft; a connecting frame is rotatably connected to the lower part of the treatment tank body; a hollow gear is coaxially fixedly connected to the lower part of the connecting frame; the hollow gear meshes with the transmission gear; and a cleaning plate is provided on the outside of the connecting frame.

[0011] Optionally, the lower part of the main body of the treatment tank is provided with an ash discharge trough; an auxiliary frame is fixedly connected to the bottom end face of the main body of the treatment tank; an ash collection box is slidably connected inside the auxiliary frame; the position of the ash collection box is aligned with the ash discharge trough.

[0012] Beneficial effects

[0013] When cleaning flue gas, this invention causes the drive guide frame to rotate as the flue gas enters the treatment tank through the inlet pipe. This rotation drives the transmission shaft, which in turn rotates the mounting column. The rotation of the mounting column causes the elastic strip to strike the inlet pipe, resulting in vibration and disrupting the adhesion of ash and dirt on the inner wall of the inlet pipe. This prevents ash and dirt buildup in the inlet pipe, maintains the flue gas flow area, reduces flue gas resistance, and improves the operating efficiency of the flue gas cleaning device for thermal power plant boilers. This effectively enhances the practicality of the flue gas cleaning device for thermal power plant boilers and makes it more convenient to use.

[0014] By starting the drive motor, the drive motor drives the transmission gear to rotate. As the transmission gear rotates, it drives the hollow gear that meshes with it to rotate. As the hollow gear rotates, it drives the connecting frame to rotate. As the connecting frame rotates, it drives the cleaning plate to rotate around the flue pipe, cleaning the impurities accumulated at the bottom of the treatment tank body. This prevents the flue gas cleaning device of the thermal power plant boiler from becoming clogged, avoids uneven airflow distribution, and effectively improves the convenience of the flue gas cleaning device of the thermal power plant boiler. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the isometric structure of this utility model.

[0018] Figure 2 This is an isometric structural schematic diagram of the present invention viewed from below.

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 4 This is an isometric structural diagram of the connecting frame of this utility model.

[0021] Figure 5 This is a cross-sectional isometric structural schematic diagram of this utility model.

[0022] Figure 6 This is an isometric structural diagram of the transmission shaft of this utility model.

[0023] List of reference numerals

[0024] 1. Processing tank body; 101. Support frame; 102. Filter; 103. Smoke inlet pipe; 104. Mounting frame; 105. Smoke filter screen; 106. Smoke diverter seat; 107. Spray head; 108. Spray pipe; 109. Hollow gear; 110. Connecting rotating frame; 111. Cleaning plate; 112. Transmission gear; 113. Drive motor; 114. Ash discharge trough; 115. Auxiliary frame; 116. Ash collection box; 117. Transmission shaft; 118. Drive guide frame; 119. First pulley; 120. Fixed rotating shaft; 121. Second pulley; 122. First bevel gear; 123. Connecting rotating shaft; 124. Second bevel gear; 125. Mounting column; 126. Elastic strip. Detailed Implementation

[0025] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0026] Example 1:

[0027] This utility model proposes a flue gas cleaning device for thermal power plant boilers. Please refer to [reference needed]. Figures 1 to 6 Includes: processing tank body 1;

[0028] A support frame 101 is fixedly connected to the outside of the treatment tank body 1; a smoke inlet pipe 103 is fixedly connected to the bottom end face of the treatment tank body 1; a filter 102 is bolted to the top end face of the treatment tank body 1; two mounting brackets 104 are symmetrically fixedly connected to the outside of the treatment tank body 1; a flue gas filter screen 105 is fixedly connected inside the treatment tank body 1; a flue gas diverter seat 106 is fixedly connected to the bottom end face of the flue gas filter screen 105; the flue gas diverter seat 106 is aligned with the position of the smoke inlet pipe 103; a spray head 107 is fixedly connected to the upper part of the treatment tank body 1; a spray pipe 108 is fixedly connected to the top end face of the spray head 107.

[0029] A transmission shaft 117 is rotatably connected to the lower part of the main body 1 of the treatment tank; a drive guide frame 118 is coaxially fixedly connected to the outside of the transmission shaft 117; the drive guide frame 118 is aligned with the position of the smoke inlet pipe 103.

[0030] Two first pulleys 119 are symmetrically and coaxially fixedly connected to the outside of the transmission shaft 117; a fixed shaft 120 is rotatably connected to the lower part of each of the two mounting brackets 104; a second pulley 121 is coaxially fixedly connected to the outside of each of the two fixed shafts 120; the two second pulleys 121 are respectively connected to the two first pulleys 119 via transmission belts.

[0031] A first bevel gear 122 is coaxially fixedly connected to the inner side of each of the two fixed rotating shafts 120; a connecting shaft 123 is rotatably connected to each of the two mounting brackets 104; a second bevel gear 124 is coaxially fixedly connected to the outer side of each of the two connecting rotating shafts 123; the two second bevel gears 124 mesh with the two first bevel gears 122 respectively; a mounting post 125 is coaxially fixedly connected to the lower part of each of the two connecting rotating shafts 123; multiple sets of elastic strips 126 are arranged in a ring array on the outer side of each mounting post 125; the multiple sets of elastic strips 126 are aligned with the position of the smoke inlet pipe 103.

[0032] A drive motor 113 is bolted to the bottom end face of the treatment tank body 1; a transmission gear 112 is coaxially fixed to the outside of the drive motor 113 shaft; a connecting frame 110 is rotatably connected to the lower part of the treatment tank body 1; a hollow gear 109 is coaxially fixed to the lower part of the connecting frame 110; the hollow gear 109 meshes with the transmission gear 112; a cleaning plate 111 is provided on the outside of the connecting frame 110.

[0033] The specific usage and function of this embodiment are as follows: When cleaning flue gas, the flowing flue gas enters the treatment tank body 1 through the flue gas inlet pipe 103. Simultaneously, as the flue gas enters, it blows the drive guide frame 118 to rotate. The rotation of the drive guide frame 118 drives the transmission shaft 117 to rotate. Both the drive guide frame 118 and the transmission shaft 117 are coated with nano-ceramic coatings. The flue gas filter 105 filters dust from the flue gas. The spray head 107 and spray pipe 108 perform dust suppression on the flue gas. The filter 102 further cleans the flue gas. The support frame 101 supports the treatment tank body 1. During the rotation of the transmission shaft 117, the first pulley 119 rotates. During the rotation of the first pulley 119, the second pulley 121 rotates via the transmission belt. The rotation of 21 will drive the fixed rotating shaft 120 to rotate. As the fixed rotating shaft 120 rotates, the first bevel gear 122 will rotate. As the first bevel gear 122 rotates, the second bevel gear 124 meshing with it will rotate. As the second bevel gear 124 rotates, the mounting column 125 will rotate. As the mounting column 125 rotates, the elastic strip 126 will tap the inlet pipe 103 to clean the ash and dirt in the inlet pipe 103. By starting the drive motor 113, the drive motor 113 will drive the transmission gear 112 to rotate. As the transmission gear 112 rotates, the hollow gear 109 meshing with it will rotate. As the hollow gear 109 rotates, the connecting rotating frame 110 will rotate. As the connecting rotating frame 110 rotates, the cleaning plate 111 will rotate around the inlet pipe 103 to clean the impurities accumulated at the bottom of the treatment tank body 1.

[0034] Example 2:

[0035] Based on Example 1, please refer to Figures 1 to 3 It includes: an ash discharge trough 114, an auxiliary frame 115, and an ash collection box 116. The lower part of the treatment tank body 1 is provided with an ash discharge trough 114; an auxiliary frame 115 is fixedly connected to the bottom end face of the treatment tank body 1; an ash collection box 116 is slidably connected inside the auxiliary frame 115; the position of the ash collection box 116 is aligned with that of the ash discharge trough 114.

[0036] The specific usage and function of this embodiment: During the process of the cleaning plate 111 rotating around the flue 103, the accumulated dust will be swept into the ash discharge trough 114, so that the dust falls into the ash collection box 116 for collection. When a lot of dust accumulates in the ash collection box 116, the ash collection box 116 can be pulled out from the auxiliary frame 115 for cleaning.

[0037] The following points should be noted in this article:

[0038] 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0039] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0040] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A flue gas cleaning device for a thermal power plant boiler, comprising: The treatment tank body (1) is externally fixedly connected to a support frame (101); characterized in that a smoke inlet pipe (103) is centrally fixedly connected to the bottom end face of the treatment tank body (1); a filter (102) is bolted to the top end face of the treatment tank body (1); two mounting brackets (104) are symmetrically fixedly connected to the outside of the treatment tank body (1); a flue gas filter (105) is fixedly connected inside the treatment tank body (1); a flue gas diverter (106) is fixedly connected to the bottom end face of the flue gas filter (105); the flue gas diverter (106) is aligned with the position of the smoke inlet pipe (103); a spray head (107) is fixedly connected to the upper part of the treatment tank body (1); a spray pipe (108) is fixedly connected to the top end face of the spray head (107).

2. The flue gas cleaning device for thermal power plant boilers as described in claim 1, characterized in that: A transmission shaft (117) is rotatably connected to the lower part of the main body (1) of the treatment tank; a drive guide frame (118) is coaxially fixedly connected to the outside of the transmission shaft (117); the drive guide frame (118) is aligned with the position of the smoke inlet pipe (103).

3. The flue gas cleaning device for thermal power plant boilers as described in claim 2, characterized in that: The transmission shaft (117) is symmetrically and coaxially fixedly connected to two first pulleys (119); the lower part of each of the two mounting brackets (104) is rotatably connected to a fixed shaft (120); the two fixed shafts (120) are coaxially and fixedly connected to a second pulley (121); the two second pulleys (121) are respectively connected to the two first pulleys (119) via transmission belts.

4. The flue gas cleaning device for thermal power plant boilers as described in claim 3, characterized in that: The inner sides of the two fixed rotating shafts (120) are coaxially fixedly connected to a first bevel gear (122); the two mounting brackets (104) are rotatably connected to a connecting shaft (123); the outer sides of the two connecting shafts (123) are coaxially fixedly connected to a second bevel gear (124); the two second bevel gears (124) mesh with the two first bevel gears (122) respectively; the lower parts of the two connecting shafts (123) are coaxially fixedly connected to a mounting post (125); the outer sides of the mounting post (125) are arranged in a ring array with multiple sets of elastic strips (126); the multiple sets of elastic strips (126) are aligned with the position of the smoke inlet pipe (103).

5. The flue gas cleaning device for thermal power plant boilers as described in claim 1, characterized in that: A drive motor (113) is bolted to the bottom end face of the treatment tank body (1); a transmission gear (112) is coaxially fixed to the outside of the drive motor (113) shaft; a connecting frame (110) is rotatably connected to the lower part of the treatment tank body (1); a hollow gear (109) is coaxially fixed to the lower part of the connecting frame (110); the hollow gear (109) meshes with the transmission gear (112); a cleaning plate (111) is provided on the outside of the connecting frame (110).

6. The flue gas cleaning device for thermal power plant boilers as described in claim 1, characterized in that: The lower part of the main body (1) of the treatment tank is provided with an ash discharge trough (114); an auxiliary frame (115) is fixedly connected to the bottom end face of the main body (1); an ash collection box (116) is slidably connected inside the auxiliary frame (115); the position of the ash collection box (116) is aligned with the ash discharge trough (114).

Images