CN220003300U

CN220003300U - Tail gas collecting device for denitration of lime kiln

Info

Publication number: CN220003300U
Application number: CN202320805593.3U
Authority: CN
Inventors: 王艳超; 秦继来; 刘文君; 范海龙; 陈长坤
Original assignee: Henan Jianlan Industrial Furnace Technology Co ltd
Current assignee: Henan Jianlan Industrial Furnace Technology Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-11-14
Anticipated expiration: 2033-04-12

Abstract

The utility model relates to the technical field of lime kiln denitration equipment, in particular to a tail gas collecting device for lime kiln denitration, which comprises a dust collecting pipe communicated with a denitration tower, wherein a communicating pipe is arranged at a position, close to an air inlet of the denitration tower, of the dust collecting pipe, the middle position of the communicating pipe is in a hollow rectangular columnar structure, a filter screen is arranged at the middle position of the communicating pipe, a collecting frame which moves up and down along the filter screen is arranged on the inner wall of the communicating pipe, a rolling brush is arranged on the collecting frame, an opening for dust to enter is arranged at a position, close to the rolling brush, on the collecting frame, a moving mechanism for driving the collecting frame to move in the vertical direction is arranged on the inner wall of the communicating pipe, a through hole is formed in the communicating pipe, an openable sealing plate is arranged in the through hole, and an openable door plate is arranged on the collecting frame.

Description

Tail gas collecting device for denitration of lime kiln

Technical Field

The utility model belongs to the technical field of lime kiln denitration equipment, and particularly relates to a tail gas collecting device for lime kiln denitration.

Background

Flue gas is the main emission of lime kilns, and combustibles are generated by burning in kiln bodies. Because the flue gas contains a large amount of nitrogen oxides NOX such as NO, if the nitrogen oxides are directly discharged into the atmosphere, the nitrogen oxides pollute the air, photochemical smog and acid rain are formed, and the human health is endangered, and therefore the flue gas must be subjected to denitrification (namely, denitration) before being discharged. The prior art denitration department carries out denitration treatment through the denitration tower, but the flue gas that gets into the denitration tower can contain a large amount of particulate matters, needs a large amount of spray liquid to handle, even can recycle after the spray liquid is handled, also needs the input of energy.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides a tail gas collecting device for lime kiln denitration, which solves the problems of inconvenient treatment and resource waste caused by directly settling large particles by a denitration tower without coarse filtration in the lime kiln denitration process in the prior art.

The utility model provides a tail gas collection device for lime kiln denitration, include the dust collecting pipe with the denitration tower intercommunication, the dust collecting pipe is close to the position of denitration tower air inlet and is provided with communicating pipe, and communicating pipe intermediate position is hollow rectangle columnar structure, and communicating pipe intermediate position is provided with the filter screen, and communicating pipe inner wall is provided with along the collection frame that the filter screen reciprocated, be provided with the round brush on the collection frame, the position that is close to the round brush on the collection frame has the opening that is used for the dust to get into, and communicating pipe inner wall is provided with the mobile mechanism that is used for driving the collection frame and moves along vertical direction, is provided with the through-hole on communicating pipe, be provided with the closing plate of openable in the through-hole, be provided with the door plant of openable on the collection frame, form the closing plate after opening, open the door plant and put into the structure of collecting the frame through the through-hole after the dust absorbing dust.

Preferably, the moving mechanism comprises fixed plates fixed on the inner wall of the communicating pipe, the fixed plates are arranged in two and symmetrically arranged relative to the filter screen, a motor is arranged on the fixed plates, a chain wheel is connected to an output shaft of the motor in a key manner, a supporting piece is arranged on the inner wall of the communicating pipe, a driven wheel is connected to the supporting piece in a rotating manner, the chain wheel and the driven wheel are driven by a chain, and a connecting plate for connecting the collecting frame is arranged on the chain.

Preferably, a sliding rod arranged along the vertical direction is arranged in the communicating pipe, and a through groove matched with the sliding rod is formed in the connecting plate.

Preferably, the collecting frame opening position is provided with the stabilizer blade, and the stabilizer blade has a plurality of and interval evenly to set up, and the stabilizer blade is connected with the friction pulley through the cross axle rotation, and the friction pulley extends to the collecting frame outside, forms the structure that the friction pulley drove the cross axle pivoted when collecting the frame and remove along the filter screen, collecting frame opening position is provided with the support, and the support is connected with the round brush through the vertical axis rotation, and the vertical axis passes through bevel gear with the cross axle tip and is connected, forms to collect the frame and removes, and the round brush is clear up the structure of filter screen under the drive of friction pulley.

Preferably, the collection frame side is provided with the rectangle mouth that is used for articulated door plant, the door plant has two and the structure equals, two the door plant is close to the position at rectangle mouth border and is provided with the pivot, be provided with the short groove that uses with the pivot cooperation on the collection frame, set up the torsional spring in the pivot, rely on the structure of torsional spring automatic re-setting after forming the door plant and opening.

The utility model has the beneficial effects that the communicating pipe is added between the denitration tower and the dust collecting pipe, the filter screen for roughly filtering the large particles in the smoke dust is arranged in the communicating pipe, the two side surfaces of the filter screen are both provided with the collecting frames for removing the large particles on the filter screen, and the large particles in the collecting frames can be pumped away through the through holes on the communicating pipe and the door plate on the collecting frames, so that the long-term effective use of the filter screen is ensured;

the collecting frame is driven to move up and down by the connecting plate under the cooperation of the chain wheel, the driven wheel and the chain, and the collecting frame is convenient to move along the vertical direction and close to the filter screen due to the arrangement of the through grooves on the sliding rod and the connecting plate;

the rolling brush is arranged on the collecting frame, so that large particles attached to the filter screen can be cleaned conveniently, the friction wheel is arranged, the rolling brush can rotate along with the movement of the collecting frame conveniently, and the vertical shaft on the rolling brush is meshed with the bevel gear at the end part of the transverse shaft on the friction wheel to provide power for the rotation of the rolling brush.

Drawings

FIG. 1 is a structural diagram of a communicating pipe of an exhaust gas collecting device for denitration of a lime kiln according to the present utility model;

FIG. 2 is a cross-sectional view of a collecting frame of the tail gas collecting device for denitration of the lime kiln of the present utility model;

FIG. 3 is a front view of a collecting frame of the tail gas collecting device for denitration of the lime kiln of the utility model;

FIG. 4 is a structural view of the tail gas collecting device for denitration of the lime kiln of the present utility model;

wherein the denitration tower 1, the dust collecting pipe 2, the communicating pipe 3, the filter screen 4, the collecting frame 5, the rolling brush 6, the opening 7, the through hole 8, the sealing plate 9, the door plate 10, the fixing plate 11, the motor 12, the chain wheel 13, the supporting piece 14, the driven wheel 15, the chain 16, the connecting plate 17, the sliding rod 18, the supporting leg 19, the friction wheel 20, the transverse shaft 21, the supporting frame 22, the vertical shaft 23, the bevel gear 24, the rectangular opening 25 and the rotating shaft 26 are arranged on the main frame

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which may be made by those skilled in the art without the inventive faculty, are intended to be within the scope of the present utility model, and in the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings, which are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance in the description of the present utility model, but rather the terms "mounted," "connected," "coupled," and the like are to be construed broadly, as being either fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated or defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The following describes the embodiments of the present utility model in further detail with reference to the drawings.

Embodiment one: according to the specification and the drawing, the tail gas collecting device for lime kiln denitration comprises a dust collecting pipe 2 communicated with a denitration tower 1, a communicating pipe 3 is arranged at the position, close to an air inlet of the denitration tower 1, of the dust collecting pipe 2, the middle position of the communicating pipe 3 is in a hollow rectangular columnar structure, and the communicating pipe 3 belongs to the prior art. The middle position joint of communicating pipe 3 is connected with filter screen 4, and filter screen 4 belongs to prior art, and communicating pipe 3 inner wall is provided with along filter screen 4 reciprocates collect frame 5, collects frame 5 and is rectangle box-like structure. The inner wall of the communicating pipe 3 is provided with a moving mechanism for driving the collecting frame 5 to move along the vertical direction, the moving mechanism comprises a fixing plate 11 fixed on the inner wall of the communicating pipe 3, the fixing plate 11 is of a rectangular structure and is fixed on the inner wall of the communicating pipe 3 through screws, and the fixing plate 11 is provided with two fixing plates and is symmetrically arranged relative to the filter screen 4. The motor 12 is fixed on the fixed plate 11 through a mounting seat screw, the motor 12 is an explosion-proof motor, the motor 12 is electrically connected with a power supply, a chain wheel 13 is connected on an output shaft of the motor in a key way, a supporting piece 14 is fixed on the inner wall of the communicating pipe 3 through a screw, a driven wheel 15 is connected on the supporting piece 14 in a rotating way, and the chain wheel 13 and the driven wheel 15 are driven through a chain 16. The chain 16 is fixed with a connecting plate 17 for connecting the collecting frame 5 through bolts, and the cross section of the connecting plate 17 is of an L-shaped structure. The inside of the communicating pipe 3 is fixedly provided with sliding rods 18 along the vertical direction through rectangular plates, the rectangular plates are two and are fixed with two opposite inner walls of the communicating pipe 3 through bolts, and the connecting plates 17 are provided with penetrating grooves matched with the sliding rods 18. The collecting frame 5 is provided with a rolling brush 6, an opening 7 for dust to enter is formed in the collecting frame 5 at a position close to the rolling brush 6, a through hole 8 penetrating through the thickness direction of the collecting frame is formed in the communicating pipe 3, a sealing plate 9 capable of being opened and closed is hinged in the through hole 8, a door plate 10 capable of being opened and closed is hinged on the collecting frame 5, and after the sealing plate 9 is opened, a dust suction mechanism is arranged in the collecting frame 5 through the through hole 8 and then opens the door plate 10 to suck dust.

In one embodiment, according to the drawings, the position of the opening 7 of the collecting frame 5 is fixed with a plurality of legs 19 by bolts, and the legs 19 are uniformly arranged at intervals along the length direction of the collecting frame 5. The support legs 19 are rotatably connected with friction wheels 20 through transverse shafts 21, one end portions of the transverse shafts 21 extend to the outside of the support legs 19, the friction wheels 20 extend to the outside of the collecting frame 5, friction is generated by contact with the filter screen 4 conveniently, the friction wheels rotate, and a structure that the friction wheels 20 drive the transverse shafts 21 to rotate when the collecting frame 5 moves along the filter screen 4 is formed. The support 22 is fixed at the position of the opening 7 of the collecting frame 5 through screws, the support 22 is rotationally connected with the rolling brush 6 for cleaning large particles on the surface of the filter screen 4 through the vertical shaft 23, one end part of the vertical shaft 23 extends to the outside of the support 22, the vertical shaft 23 is in meshed connection with the end part of the transverse shaft 21 through the bevel gear 24, and the collecting frame 5 is formed to move, and the rolling brush 6 is driven by the friction wheel 20 to clean the structure of the filter screen 4.

In an embodiment, according to the drawing, a rectangular opening 25 for hinging the door panel 10 is provided on one side of the collecting frame 5, the rectangular opening 25 is provided through the thickness direction of the collecting frame 5, and the door panels 10 are two and equal in structure. The position that two door plant 10 are close to rectangular mouth 25 border is provided with the pivot 26 with door plant 10 integral structure, is provided with on the collection frame 5 to sunken its own and with the short groove of pivot 26 cooperation use, set up the torsional spring on the pivot 26, form the door plant 10 and rely on the structure of torsional spring automatic re-setting after opening.

According to the utility model, a communicating pipe is added between the denitration tower and the dust collecting pipe, a filter screen for roughly filtering large particles in smoke dust is arranged in the communicating pipe, and the two side surfaces of the filter screen are both provided with a collecting frame for removing the large particles on the filter screen, wherein the large particles in the collecting frame can be pumped away through a through hole on the communicating pipe and a door plate on the collecting frame, so that the long-term effective use of the filter screen is ensured; the collecting frame is driven to move up and down by the connecting plate under the cooperation of the chain wheel, the driven wheel and the chain, and the collecting frame is convenient to move along the vertical direction and close to the filter screen due to the arrangement of the through grooves on the sliding rod and the connecting plate; the rolling brush is arranged on the collecting frame, so that large particles attached to the filter screen can be cleaned conveniently, the friction wheel is arranged, the rolling brush can rotate along with the movement of the collecting frame conveniently, and the vertical shaft on the rolling brush is meshed with the bevel gear at the end part of the transverse shaft on the friction wheel to provide power for the rotation of the rolling brush.

The present utility model has been described in detail by way of specific embodiments and examples, but these should not be construed as limiting the utility model. Many variations and modifications may be made by one skilled in the art without departing from the principles of the utility model, which is also considered to be within the scope of the utility model.

Claims

1. The tail gas collecting device for lime kiln denitration comprises a dust collecting pipe (2) communicated with a denitration tower (1), and is characterized in that the position, close to an air inlet of the denitration tower (1), of the dust collecting pipe (2) is provided with a communicating pipe (3), the middle position of the communicating pipe (3) is of a hollow rectangular columnar structure, a filter screen (4) is arranged at the middle position of the communicating pipe (3), a collecting frame (5) moving up and down along the filter screen (4) is arranged on the inner wall of the communicating pipe (3), a rolling brush (6) is arranged on the collecting frame (5), an opening (7) for dust entering is arranged at the position, close to the rolling brush (6), of the collecting frame (5), a moving mechanism for driving the collecting frame (5) to move along the vertical direction is arranged on the inner wall of the communicating pipe (3), through holes (8) are formed in the communicating pipe (3), sealing plates (9) capable of being opened and closed are arranged in the communicating plates (8), after the sealing plates (9) are opened, the collecting mechanism is opened through the through holes (8), the door plates (10) to be placed in the collecting frame (5), the collecting frame is uniformly provided with a plurality of supporting legs (19) and the supporting legs (19) are arranged at intervals, the stabilizer blade (19) are connected with friction wheel (20) through cross axle (21) rotation, and friction wheel (20) extend to collection frame (5) outside, and friction wheel (20) drive cross axle (21) pivoted structure when collecting frame (5) and remove along filter screen (4), collection frame (5) opening (7) position is provided with support (22), and support (22) are connected with round brush (6) through vertical axis (23) rotation, and vertical axis (23) are connected through bevel gear (24) with cross axle (21) tip, form and collect frame (5) and remove, and round brush (6) clear up the structure of filter screen (4) under the drive of friction wheel (20).

2. The tail gas collecting device for lime kiln denitration according to claim 1, wherein the moving mechanism comprises two fixing plates (11) fixed on the inner wall of the communicating pipe (3), the fixing plates (11) are symmetrically arranged about the filter screen (4), a motor (12) is arranged on the fixing plates (11), a chain wheel (13) is connected to an output shaft of the motor (12) in a key manner, a supporting piece (14) is arranged on the inner wall of the communicating pipe (3), a driven wheel (15) is rotatably connected to the supporting piece (14), the chain wheel (13) and the driven wheel (15) are driven by a chain (16), and a connecting plate (17) for connecting the collecting frame (5) is arranged on the chain (16).

3. The tail gas collecting device for lime kiln denitration according to claim 2, wherein a sliding rod (18) arranged along the vertical direction is arranged in the communicating pipe (3), and a penetrating groove matched with the sliding rod (18) for use is arranged on the connecting plate (17).

4. The tail gas collecting device for lime kiln denitration according to claim 1, wherein rectangular openings (25) for hinging the door plates (10) are formed in the side surfaces of the collecting frame (5), the door plates (10) are two and equal in structure, rotating shafts (26) are arranged at positions, close to the edges of the rectangular openings (25), of the two door plates (10), short grooves matched with the rotating shafts (26) are formed in the collecting frame (5), torsion springs are arranged on the rotating shafts (26), and a structure that the door plates (10) automatically reset by means of the torsion springs after being opened is formed.