Automatic ammonia spraying device for denitration of heating furnace

Abstract

The utility model provides an automatic ammonia spraying device for denitration of a heating furnace, which relates to the field of denitration and comprises two groups of spray headers which are symmetrically arranged, one group of spray headers are connected and communicated through a supply pipe, and a rotating ring is arranged at the supply end of the supply pipe. A driving unit for driving the supply pipe to rotate is arranged at the sealed end of the supply pipe, a tee joint is arranged on the side, away from the supply pipe, of the rotating ring, the tee joint is communicated with ammonia liquid and spraying cleaning liquid, spraying holes are away from one another when the spraying head sprays the ammonia liquid, and the spraying holes are close to one another when the spraying head sprays the cleaning liquid; a sealing sliding pipe is connected into the sliding sleeve in a sliding mode, and the sealing sliding pipe is connected and communicated with the supply pipe. According to the automatic ammonia spraying device for denitration of the heating furnace, the two spray headers can be close to each other by rotating the spray headers, then the tee joint is switched to spray cleaning liquid, and the spray headers are cleaned through opposite spraying of the spray headers.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of denitration, specifically is a kind of heating furnace denitration automatic ammonia injection device. BACKGROUND

[0002] Industrial waste gas contains a large amount of sulfur dioxide and nitrogen oxides, desulfurization is to remove sulfur dioxide in flue gas, denitration is mainly to remove nitrogen oxides in flue gas, the two substances into the atmosphere can form acid rain, acid rain is very harmful to human beings. Among them, the main way of denitration is ammonia injection.

[0003] CN222034225U is an automatic ammonia injection system for emission treatment. The technical scheme comprises: a pipeline, a connecting cover and a baffle, the inner wall of the pipeline is provided with a shunt pipe on both sides, the inner wall of the pipeline is provided with a connecting cover on one side, the inner wall of the connecting cover is provided with an electric push rod on one side of the lower end, the outer wall of the upper end of the electric push rod is provided with a motor body, the outer wall of the upper end of the motor body is provided with a rotating shaft, the outer wall of the upper end of the rotating shaft is provided with a baffle, the outer wall of the lower end of the baffle is provided with a brush on both sides, by setting the electric push rod, the motor body and the brush, the effect of cleaning the spray head body is achieved, the spray head body is prevented from being blocked, and the flow of ammonia gas through the spray head body is ensured. Although the technical scheme can clean the spray head by the brush, a driving mechanism and a cleaning mechanism are needed to move, and the device occupies space. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of heating furnace denitration automatic ammonia injection device, solve the problem of space occupation of cleaning device in background art.

[0005] TECHNICAL SCHEME

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of heating furnace denitration automatic ammonia injection device, including two groups of spray heads arranged symmetrically, one group of spray heads is connected and penetrates by supply pipe, the supply end of supply pipe is provided with rotating ring, the sealing end of supply pipe is provided with drive unit for driving supply pipe rotation, the side of rotating ring away from supply pipe is provided with tee, tee is communicated with ammonia liquid and spray cleaning fluid respectively, spray hole is far away from each other when spray head sprays ammonia liquid, spray hole is close to each other when spray head sprays cleaning fluid.

[0007] Further, one end of the supply pipe provided with drive unit is provided with telescopic mechanism for driving supply pipe to stretch out and retract.

[0008] Further, the spray heads in the same group are equally spaced, and the adjacent two groups of spray heads are arranged in staggered positions, and the rear end of the spray head is provided with a polishing brush.

[0009] Further, the rotating ring is divided into a sliding sleeve, the sliding sleeve is connected with and penetrates through the tee joint, a sealing sliding pipe is slidably connected in the sliding sleeve, the sealing sliding pipe is connected with and penetrates through the supply pipe, an extension sleeve is arranged at the end of the supply pipe away from the rotating ring, the extension sleeve is rotationally connected with the supply pipe, the drive unit comprises a tooth column, the extension sleeve is rotationally connected with the tooth column, the tooth column is fixedly installed on the side of the supply pipe away from the rotating ring, and the outer surface of the tooth column is engaged with a gear for rotating the tooth column.

[0010] Further, a rotating disc is arranged at the free end of the extension sleeve, and a rotating groove for accommodating the rotating disc is formed in the end of the tooth column close to the extension sleeve.

[0011] Further, a controller is arranged between the tee joint and the rotating ring, and the controller controls the connection between the tee joint and the rotating ring.

[0012] Further, a pressurizing pump is arranged between the tee joint and the controller.

[0013] The heating furnace denitration automatic ammonia spraying device has the advantages that:

[0014] 1. The heating furnace denitration automatic ammonia spraying device can make the two spraying heads close to each other through the rotating spraying head, and then switch the tee joint to spray cleaning liquid, and clean the spraying head through spraying.

[0015] 2. The heating furnace denitration automatic ammonia spraying device can clean the spraying head in a friction mode through rotating the spraying head to contact the polishing brush and driving the polishing brush to reciprocate through the extension sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a tooth column connection schematic view of the utility model;

[0018] Figure 3 It is a rotating ring half-section schematic view of the utility model;

[0019] Figure 4 It is a spraying head connection schematic view of the utility model.

[0020] 1. Spraying head; 2. Supply pipe; 3. Rotating ring; 4. Drive unit; 5. Tee joint; 6. Extension mechanism; 7. Polishing brush; 301. Sliding sleeve; 302. Sealing sliding pipe; 601. Extension sleeve; 401. Tooth column; 402. Gear; 602. Rotating disc; 603. Rotating groove; 8. Controller; 9. Pressurizing pump. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made belong to the scope of protection of the present application.

[0022] Referring to Figures 1-4 The application discloses a heating furnace denitration automatic ammonia spraying device, which comprises two groups of spraying heads 1 arranged symmetrically, is arranged in the interior of a denitration unit, and is connected and penetrated by a supply pipe 2. The supply end of the supply pipe 2 is provided with a rotating ring 3, the sealing end of the supply pipe 2 is provided with a driving unit 4 for driving the supply pipe 2 to rotate, the side, away from the supply pipe 2, of the rotating ring 3 is provided with a tee joint 5, the tee joint 5 is respectively communicated with ammonia liquid and cleaning liquid, the spray holes of the spraying heads 1 are away from each other when the spraying heads 1 spray the ammonia liquid, and the spray holes of the spraying heads 1 are close to each other when the spraying heads 1 spray the cleaning liquid. The two spraying heads 1 can be close to each other by rotating the spraying heads 1, and then the tee joint 5 is switched to spray the cleaning liquid, and the spraying heads 1 are cleaned by spraying.

[0023] One end of the supply pipe 2, provided with the driving unit 4, is provided with a telescopic mechanism 6 for driving the supply pipe 2 to stretch and retract. The telescopic mechanism 6 can drive the spraying heads 1 to reciprocate, so that the spraying heads 1 can be moved to be cleaned.

[0024] The spraying heads 1 in the same group are distributed at equal intervals, the adjacent two groups of spraying heads 1 are arranged in a staggered mode, the rear end of the spraying head 1 is provided with a polishing brush 7, the polishing brush 7 is brought into contact with the spraying head 1 by rotating, and the spraying head 1 is cleaned by moving the polishing brush 7.

[0025] The rotating ring 3 is divided into a sliding sleeve 301, the sliding sleeve 301 is connected and penetrated with the tee joint 5, the inside of the sliding sleeve 301 is slidably connected with a sealing sliding pipe 302, the sealing sliding pipe 302 is connected and penetrated with the supply pipe 2, one end, away from the rotating ring 3, of the supply pipe 2 is provided with a telescopic sleeve 601, the telescopic sleeve 601 is rotationally connected with the supply pipe 2, the driving unit 4 comprises a tooth column 401, the telescopic sleeve 601 is rotationally clamped with the tooth column 401, the tooth column 401 is fixedly installed on the side, away from the rotating ring 3, of the supply pipe 2, the outer surface of the tooth column 401 is engaged with a gear 402 for driving the tooth column 401 to rotate, and the spraying head 1 can be rotated and reciprocated at the same time by the arrangement.

[0026] The free end of the telescopic sleeve 601 is provided with a rotating disc 602, one end, close to the telescopic sleeve 601, of the tooth column 401 is provided with a rotating groove 603 for accommodating the rotating disc 602, and the telescopic sleeve 601 can drive the gear 402 to reciprocate by the arrangement.

[0027] The controller 8 is arranged between the tee joint 5 and the rotating ring 3, and the controller 8 controls the connection between the tee joint 5 and the rotating ring 3. By arranging the controller 8, the spraying time of the spraying head 1 can be controlled. The smoke sensor detects the smoke concentration, converts the concentration value, and controls the controller 8 to open according to the smoke concentration value.

[0028] The pressurizing pump 9 is arranged between the tee joint 5 and the controller 8, and by such arrangement, the spraying head 1 can be supplied with high-pressure liquid.

[0029] In use, the spraying head 1 can be rotated so that the spray holes of the two spraying heads 1 are close to each other, so that the spraying head 1 can be cleaned by the spraying cleaning liquid. In order to better achieve cleaning, the spraying head 1 is rotated to be in contact with the polishing brush 7, and the polishing brush 7 reciprocates in the telescopic sleeve 601 to realize friction cleaning of the spraying head 1.

[0030] It should be noted that, in the present text, relational terms such as first and second and the like can merely be used to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between or among entities or actions.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A heating furnace denitration automatic ammonia spraying device, comprising two groups of spray heads (1) arranged symmetrically, characterized in that: A group of spray heads (1) are connected and through supply pipe (2), the supply end of supply pipe (2) is provided with rotating ring (3), the sealed end of supply pipe (2) is provided with driving unit (4) for driving supply pipe (2) to rotate, the side of rotating ring (3) away from supply pipe (2) is provided with three-way (5), three-way (5) is communicated with ammonia liquid and spray cleaning liquid respectively, the spray holes of spray head (1) are away from each other when spraying ammonia liquid, and the spray holes of spray head (1) are close to each other when spraying cleaning liquid.

2. The automatic ammonia injection device for denitration of a heating furnace according to claim 1, characterized in that: One end of the supply pipe (2) provided with the driving unit (4) is provided with a telescopic mechanism (6) for driving the supply pipe (2) to telescope.

3. The automatic ammonia injection device for denitration of a heating furnace according to claim 2, characterized in that: The same group of spray heads (1) are equidistantly distributed, and the adjacent two groups of spray heads (1) are staggered, and the rear end of the spray head (1) is provided with a polishing brush (7).

4. The automatic ammonia injection device for denitration of a heating furnace according to claim 1, characterized in that: The rotating ring (3) is divided into a sliding sleeve (301), the sliding sleeve (301) is connected and through the three-way (5), the inside of the sliding sleeve (301) is slidably connected with a sealing sliding pipe (302), the sealing sliding pipe (302) is connected and through the supply pipe (2), and one end of the supply pipe (2) away from the rotating ring (3) is provided with a telescopic sleeve (601), the telescopic sleeve (601) is rotatably connected with the supply pipe (2); The driving unit (4) comprises a tooth column (401), the telescopic sleeve (601) is rotatably connected with the tooth column (401), the tooth column (401) is fixedly installed on one side of the supply pipe (2) away from the rotating ring (3), and the outer surface of the tooth column (401) is engaged with a gear (402) for driving the tooth column (401) to rotate.

5. The automatic ammonia injection device for denitration of a heating furnace according to claim 4, characterized in that: The free end of the telescopic sleeve (601) is provided with a rotating disc (602), and one end of the tooth column (401) close to the telescopic sleeve (601) is provided with a rotating groove (603) for accommodating the rotating disc (602).

6. The automatic ammonia injection device for denitration of a heating furnace according to any one of claims 1-5, characterized in that: The three-way (5) and the rotating ring (3) are provided with a controller (8), and the controller (8) controls the connection between the three-way (5) and the rotating ring (3).

7. The automatic ammonia injection device for denitration of a heating furnace according to claim 1, characterized in that: The three-way (5) and the controller (8) are provided with a pressure pump (9).

Images