CN216047791U

CN216047791U - Lead screw flue valve

Info

Publication number: CN216047791U
Application number: CN202121348736.XU
Authority: CN
Inventors: 张久明
Original assignee: Qiming Xingyu Energy Saving Technology Co ltd
Current assignee: Qiming Xingyu Energy Saving Technology Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-03-15
Anticipated expiration: 2031-06-17

Abstract

The utility model provides a lead screw flue valve which comprises a flue, wherein a smoke outlet of the flue is provided with a shutter, the shutter is semicircular, the diameter of the shutter is larger than or equal to that of the flue, and a lead screw lifter is arranged on the outer side of the shutter and used for controlling the shutter to open and close. According to the utility model, the gate plate is arranged, the gate plate is two semicircular plates, the combined area of the gate plate and the semicircular plates can just seal the flue opening, and the two gate plates are pushed towards the middle of the flue by the lead screw lifter when the flue is closed, so that the two gate plates are closed. When the gate is opened, the two gate plates are pulled outwards through the lead screw elevator, so that the two gate plates are opened. Therefore, the flue gas at the residence can effectively flow back into the flue, a draught fan, a desulfurizing tower and other facilities of the desulfurizing equipment are corroded, the oxygen content concentration of the flue gas of a chimney shared by a plurality of boilers is stably controlled, and the ultralow emission target is realized. The shutter is semicircular and has a diameter larger than or equal to the diameter of the flue so as to completely seal the flue opening and save materials and installation space as much as possible.

Description

Lead screw flue valve

Technical Field

The utility model relates to desulfurization, dust removal and denitration in the field of waste gas treatment, in particular to a lead screw flue valve.

Background

At present, most of flue gas discharged from boilers and the like can be discharged into the atmosphere after being desulfurized and dedusted. Because a plurality of boilers and a plurality of desulphurization devices are usually arranged in one boiler room, but only one flue can be shared. If a single desulfurization device in the plurality of desulfurization devices is out of service, the flue gas discharged by the running desulfurization device flows back to the induced draft fan, the desulfurization tower and other facilities of the out-of-service desulfurization device, thereby causing corrosion, stably controlling the oxygen content concentration of the flue gas of a chimney shared by a plurality of boilers and realizing the ultra-low emission target. And even safety issues for the operator.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lead screw flue valve which comprises a flashboard and a lead screw hoister, wherein the flashboard is controlled to be automatically opened, closed and opened by controlling the lead screw hoister, so that flue gas at the address can effectively flow back into a flue to corrode a draught fan, a desulfurizing tower and other facilities of desulfurizing equipment.

In order to achieve the technical purpose, the utility model provides the following technical scheme:

the utility model provides a lead screw flue valve which comprises a flue, wherein a smoke outlet of the flue is provided with a shutter, the shutter is semicircular, the diameter of the shutter is larger than or equal to that of the flue, and a lead screw lifter is arranged on the outer side of the shutter and used for controlling the shutter to open and close.

In the prior art, if a single desulfurization device in a plurality of desulfurization devices is deactivated, flue gas discharged by the operated desulfurization device flows back to an induced draft fan, a desulfurization tower and other facilities of the deactivated desulfurization device, so that corrosion is caused, and even the safety problem of operators is brought.

According to the utility model, the gate plate is arranged, the gate plate is two semicircular plates, the combined area of the gate plate and the semicircular plates can just seal the flue opening, and the two gate plates are pushed towards the middle of the flue by the lead screw lifter when the flue is closed, so that the two gate plates are closed. When the gate is opened, the two gate plates are pulled outwards through the lead screw elevator, so that the two gate plates are opened. Therefore, the flue gas at the residence can effectively flow back into the flue to corrode a draught fan, a desulfurizing tower and other facilities of the desulfurizing equipment. The shutter is semicircular and has a diameter larger than or equal to the diameter of the flue so as to completely seal the flue opening and save materials and space as much as possible.

Preferably, the screw lifting machine comprises a fixed support, and the fixed support is arranged in the middle of the arc surface of the flashboard.

Preferably, the fixed support is provided with a control slide block in a matching manner.

Preferably, the screw rod hoister comprises a slide rod, and the slide rod penetrates through the control slide block to enable the control slide block to control the lifting.

Preferably, a wireless module is installed on the control sliding block and used for receiving instructions and controlling the motor to lift.

Preferably, the two shutters are symmetrically arranged with respect to the diameter of the flue.

Preferably, the surfaces of the shutter and the smoke outlet of the flue are smooth surfaces to reduce friction and wear on the shutter.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the lead screw flue valve can automatically control the opening and closing of the flashboard by arranging the flashboard and the lead screw hoister, and effectively lead flue gas to flow back into the flue to corrode an induced draft fan, a desulfurizing tower and other facilities of desulfurizing equipment.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a lead screw flue valve provided by the present invention;

FIG. 2 is a bottom view of the screw flue valve provided by the present invention;

fig. 3 is a schematic structural view of a combination of the lead screw flue valve and the main flue provided by the utility model.

Wherein:

10-flue; 20-a shutter; 30-lead screw elevator; 301-a fixed support; 302-control slide; 303-sliding bar.

Detailed Description

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.

Examples

Referring to fig. 1-3, the valve for a screw flue 10 provided by the utility model comprises a flue 10, a shutter 20 and a screw elevator 30, wherein the shutter 20 is arranged at a smoke outlet of the flue 10, the shutter 20 is divided into two semicircular iron plates with the same size, and the diameter of the shutter 20 is larger than or equal to that of the flue 10, so that the smoke outlet of the flue 10 can be completely sealed, and no gap is generated to allow part of smoke to flow back into the flue 10. The shutters 20 are arranged symmetrically along the central diameter of the flue 10. Because the shutter 20 is designed to be closely attached to the flue 10, the surface of the shutter 20 that is intended to contact the flue 10 is smooth, preventing the shutter 20 from rubbing against the flue 10.

One side of the gate plate 20 is provided with a lead screw lifter 30, and the lead screw lifter 30 comprises three parts, namely a fixed bracket 301, a control slide block 302 and a slide rod 303. The slide bar 303 is fixed on the flue 10 and penetrates through the control slide block 302, and the fixed bracket 301 is arranged at the center of the arc surface of the gate plate 20 and is overlapped with the diameter of the gate plate 20. A control slider 302 is fixed on the fixed bracket 301, and the control slider 302 performs lifting motion on a sliding rod 303 through a motor so as to control the closing and opening of the shutter 20. The control slide block 302 is provided with a wireless module, and the staff can control the lead screw hoist 30 to perform lifting movement and control the opening and closing of the gate plate 20 through the wireless module.

In a word, the valve of the screw flue 10 of the utility model can automatically control the opening and closing of the gate plate 20 by arranging the gate plate 20 and the screw hoister 30, and effectively lead flue gas to flow back into the flue 10 to corrode an induced draft fan, a desulfurizing tower and other facilities of desulfurizing equipment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a lead screw flue valve, its characterized in that, includes the flue, the outlet flue of flue is provided with the flashboard, the flashboard is semi-circular, its diameter more than or equal to the diameter of flue, the outside of flashboard is provided with the lead screw lifting machine and is used for control the flashboard opens and shuts.

2. The lead screw flue valve of claim 1, wherein the lead screw elevator comprises a fixed bracket disposed substantially midway between the arcuate surfaces of the shutters.

3. The lead screw flue valve of claim 2, wherein the fixed bracket is provided with a control slider in a matching manner.

4. The lead screw flue valve of claim 3, wherein the lead screw elevator comprises a slide rod that passes through the control slide for controlled elevation of the control slide.

5. The lead screw flue valve of claim 3, wherein the control slide is provided with a wireless module, and the wireless module is used for receiving instructions and controlling the motor to lift.

6. The screw flue valve of claim 1, wherein the shutter is two in number, symmetrically disposed about the flue diameter.

7. The screw flue valve of claim 1, wherein the surfaces of the shutter and the flue outlet are smooth surfaces to reduce friction wear on the shutter.