Wind powder regulating valve with double valve plates

Abstract

The utility model discloses a wind powder regulating valve with double valve plates, which relates to the technical field of boilers, and comprises a first ventilating pipeline, a second ventilating pipeline, a first wind powder regulating valve and a second wind powder regulating valve, and the first wind powder regulating valve and the second wind powder regulating valve are arranged between the first ventilating pipeline and the second ventilating pipeline. The front portion and the rear portion of the first air powder adjusting valve are connected with a first front flow guide pipe and a first rear flow guide pipe respectively, and the other end of the first front flow guide pipe is connected with a first ventilation pipeline. The flow direction of gas in the first ventilation pipeline and the second ventilation pipeline can be adjusted, the two ends of the faulted air and powder adjusting valve are completely sealed, and the situation that gas flows into the faulted air and powder adjusting valve to cause gas leakage and pollute air is avoided; therefore, maintenance personnel can conveniently disassemble, replace or maintain the faulted air powder adjusting valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler technical field, concretely is a kind of double valve piece's wind powder regulating valve. BACKGROUND

[0002] After the delivery of use of boiler, its geometric dimension shape, the structure of burner, the arrangement of each level heating surface, even furnace heat load etc. have been fixed, although design parameter selection is just right, structure and arrangement are ideal, but there are various factors in operation, such as the fluctuation of airflow, the difference of coal powder concentration in primary air, the change of coal quality etc., all have great influence on the coking of boiler, therefore, after the fixation of boiler, the flow of operation system conveying wind powder pipeline can let the appropriate amount of wind powder enter the inside of boiler, to solve the problem of coking of boiler wall.

[0003] In order to better control the flow of boiler wind powder conveying pipeline, wind powder regulating valve is generally installed on boiler wind powder conveying pipeline, through retrieval, patent authorized announcement No.CN 219674288 U discloses a kind of double valve piece's wind powder regulating valve, "its technical scheme includes two wind collectors, two wind collectors are jointly installed with two valve installation pipes, butterfly valve is rotatably installed on each valve installation pipe, cleaning port is excavated on each valve installation pipe, each cleaning port is arranged at the side of matched butterfly valve, sealing sleeve is movably sleeved on the outer wall of each valve installation pipe, each cleaning port is covered in the inside of matched sealing sleeve", but, the regulating valve only passes through the rotation butterfly valve cannot completely close the valve installation pipe where the butterfly valve is located, when the butterfly valve is maintained, once the butterfly valve is rotated, the valve installation pipe where the butterfly valve is located will enter boiler gas, boiler gas will leak from cleaning port, and when the butterfly valve is replaced, since the sealing effect of butterfly valve is lacked, gas will enter the valve installation pipe and leak outward directly, therefore, if you want not to let gas leak, still need to cooperate with the stop of boiler, which undoubtedly leads to the increase of maintenance cost. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a kind of double valve piece's wind powder regulating valve, to solve the problem raised in above-mentioned background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The utility model provides a double valve piece's air powder governing valve, including first ventilation pipeline, second ventilation pipeline, first air powder governing valve and second air powder governing valve, be provided with first air powder governing valve and second air powder governing valve between first ventilation pipeline and second ventilation pipeline, the front and rear of first air powder governing valve are connected with first front pilot pipe and first rear pilot pipe respectively, the other end of first front pilot pipe is connected with first ventilation pipeline, the other end of first rear pilot pipe is connected with second ventilation pipeline, the front and rear of second air powder governing valve are connected with second front pilot pipe and second rear pilot pipe respectively, the other end of second front pilot pipe is connected with first ventilation pipeline, the other end of second rear pilot pipe is connected with second ventilation pipeline, be provided with first adjusting block and second adjusting block in first ventilation pipeline and second ventilation pipeline respectively, the connecting shaft is installed between first adjusting block and second adjusting block, the connecting shaft is rotatably connected with the bearing embedded installation on first ventilation pipeline and second ventilation pipeline, and the adjusting hand wheel is installed on the connecting shaft.

[0007] As a further scheme of the utility model: the recess is arranged on the side surface of the first adjusting block and the second adjusting block, and the sealing rubber ring is arranged in the recess.

[0008] As a further scheme of the utility model: the adjusting block indicating arrow is arranged on the adjusting hand wheel, and the first air powder governing valve indicating line and the second air powder governing valve indicating line are arranged on the end surface of the first ventilation pipeline and the end surface of the second ventilation pipeline.

[0009] As a further scheme of the utility model: the angle indicating arrow is arranged on the wheel disc of the first air powder governing valve and the second air powder governing valve, and the angle indicating line is arranged on the valve body of the first air powder governing valve and the second air powder governing valve.

[0010] As a further scheme of the utility model: the first adjusting block and the second adjusting block are in cylindrical structure, and the two end surfaces of the first adjusting block and the second adjusting block in opposite directions are chamfered surfaces.

[0011] As a further scheme of the utility model: the first flange plate is arranged between the first air powder governing valve and the first front pilot pipe and the first rear pilot pipe, and the two ends of the first air powder governing valve are fixedly connected with the first front pilot pipe and the first rear pilot pipe through the first flange plate, the second flange plate is arranged between the second air powder governing valve and the second front pilot pipe and the second rear pilot pipe, and the two ends of the second air powder governing valve are fixedly connected with the second front pilot pipe and the second rear pilot pipe through the second flange plate.

[0012] As a further scheme of the utility model: the wear-resistant layer is arranged on the surface of the first adjusting block and the second adjusting block, and the wear-resistant layer is a ceramic layer.

[0013] Compared with the prior art, the utility model discloses the beneficial effect is:

[0014] 1, the utility model discloses a first adjusting block, second adjusting block, connecting shaft, bearing and adjusting hand wheel mutual cooperation can realize the adjustment to first ventilation pipeline and second ventilation pipeline internal gas flow, realize to the complete sealing of the both ends of the malfunctioning wind powder regulating valve, avoid the gas flow to the malfunctioning wind powder regulating valve and cause the gas leakage pollution air, thereby convenient maintenance personnel to the malfunctioning wind powder regulating valve are disassembled replacement or repair.

[0015] 2, the utility model discloses the surface setting wear -resisting layer at first adjusting block and second adjusting block, and wear -resisting layer can improve the wear resistance of first adjusting block and second adjusting block, make first adjusting block and second adjusting block can be more wear -resisting when rub with pipeline and the impurity in boiler gas, and the service life is longer. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is the side view of the utility model.

[0018] Figure 3 It is the structure of the utility model Figure 1 enlarged view of A place.

[0019] Figure 4 It is the structure of the utility model Figure 1 enlarged view of B place.

[0020] 1, first ventilation pipeline;2, second ventilation pipeline;3, first front flow guide pipe;4, first rear flow guide pipe;5, first wind powder regulating valve;6, second front flow guide pipe;7, second rear flow guide pipe;8, second wind powder regulating valve;9, first adjusting block;10, second adjusting block;11, connecting shaft;12, bearing;13, adjusting hand wheel;14, first flange plate;15, second flange plate;16, adjusting block indication arrow;17, first wind powder regulating valve indication line;18, second wind powder regulating valve indication line;19, wear -resisting layer;20, recess;21, sealing rubber ring;22, angle indication arrow;23, angle indication line. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figure 1 、 Figure 2 and Figure 4 , the utility model discloses a kind of double valve sheet's wind powder regulating valve, including first ventilation duct 1, second ventilation duct 2, first wind powder regulating valve 5 and second wind powder regulating valve 8, first ventilation duct 1 and second ventilation duct 2 between being provided with first wind powder regulating valve 5 and second wind powder regulating valve 8, first wind powder regulating valve 5 is respectively connected with first front guide pipe 3 and first rear guide pipe 4 before and after, the other end of first front guide pipe 3 is connected with first ventilation duct 1, the other end of first rear guide pipe 4 is connected with second ventilation duct 2, second wind powder regulating valve 8 is respectively connected with second front guide pipe 6 and second rear guide pipe 7 before and after, the other end of second front guide pipe 6 is connected with first ventilation duct 1, the other end of second rear guide pipe 7 is connected with second ventilation duct 2, first ventilation duct 1 and second ventilation duct 2 are provided with first adjusting block 9 and second adjusting block 10 respectively, first adjusting block 9 and second adjusting block 10 are installed with connecting shaft 11, connecting shaft 11 is rotatably connected with bearing 12 embeddedly installed on first ventilation duct 1 and second ventilation duct 2, adjusting hand wheel 13 is installed on connecting shaft 11.

[0023] Adjusting hand wheel 13 is provided with adjusting block indicating arrow 16, and the end surface of first ventilation duct 1 and the end surface of second ventilation duct 2 are provided with first wind powder regulating valve indicating line 17 and second wind powder regulating valve indicating line 18, so that personnel can accurately adjust the adjusting block, so that the gas can not flow out of the pipeline to be overhauled.

[0024] Angle indicating arrow 22 is provided on the wheel disc of first wind powder regulating valve 5 and second wind powder regulating valve 8, and angle indicating line 23 is provided on the valve body of first wind powder regulating valve 5 and second wind powder regulating valve 8, so that personnel can control the airflow by operating first wind powder regulating valve 5 or second wind powder regulating valve 8.

[0025] First adjusting block 9 and second adjusting block 10 are of cylindrical structure, and the two end surfaces of first adjusting block 9 and second adjusting block 10 facing opposite directions are chamfered, so that the boiler gas can be better guided, and the resistance of the gas in the flow process is reduced.

[0026] The first flange plate 14 is arranged between the first air powder adjusting valve 5 and the first front guide pipe 3 and the first rear guide pipe 4, and the two ends of the first air powder adjusting valve 5 are fixedly connected with the first front guide pipe 3 and the first rear guide pipe 4 through the first flange plate 14; the second flange plate 15 is arranged between the second air powder adjusting valve 8 and the second front guide pipe 6 and the second rear guide pipe 7, and the two ends of the second air powder adjusting valve 8 are fixedly connected with the second front guide pipe 6 and the second rear guide pipe 7 through the second flange plate 15; the flange connection facilitates the personnel to disassemble, maintain or replace the first air powder adjusting valve 5 and the second air powder adjusting valve 8.

[0027] Please refer to Figure 1 and Figure 3 The surfaces of the first adjusting block 9 and the second adjusting block 10 are provided with wear-resistant layers 19, the wear-resistant layers 19 are ceramic layers, the wear-resistant layers 19 can protect the adjusting blocks, so that the adjusting blocks are more wear-resistant, the side surfaces of the first adjusting block 9 and the second adjusting block 10 are provided with grooves 20, and sealing rubber rings 21 are arranged in the grooves 20; the sealing rubber rings 21 can increase the sealing performance between the first adjusting block 9, the second adjusting block 10 and the ventilation pipes, and air leakage is avoided.

[0028] The working principle of the utility model is:

[0029] In use, when the first air powder adjusting valve 5 / second air powder adjusting valve 8 needs to be maintained due to faults, personnel first hold the adjusting hand wheel 13 and rotate, so that the adjusting hand wheel 13 drives the first adjusting block 9 and the second adjusting block 10 to synchronously rotate through the connecting shaft 11, until the adjusting block indicating arrow 16 on the adjusting hand wheel 13 is aligned with the second air powder adjusting valve indicating line 18 / first air powder adjusting valve indicating line 17; at this time, the oblique surface of the first adjusting block 9 is opposite to the connection between the second front guide pipe 6 / first front guide pipe 3 and the first ventilation pipe 1, and the oblique surface of the second adjusting block 10 is opposite to the connection between the second rear guide pipe 7 / first rear guide pipe 4 and the second ventilation pipe 2, that is, the second front guide pipe 6 and the second rear guide pipe 7 are opened and the first front guide pipe 3 and the first rear guide pipe 4 are closed / the first front guide pipe 3 and the first rear guide pipe 4 are opened and the second front guide pipe 6 and the second rear guide pipe 7 are closed; in this way, the first air powder adjusting valve 5 / second air powder adjusting valve 8 can be disassembled and maintained or replaced.

[0030] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A double-damper air-powder regulating valve comprising a first air duct (1), a second air duct (2), a first air-powder regulating valve (5) and a second air-powder regulating valve (8), characterized in that: The first air duct (1) and the second air duct (2) are provided with a first air powder adjusting valve (5) and a second air powder adjusting valve (8), the first air powder adjusting valve (5) is connected with a first front flow guide pipe (3) and a first rear flow guide pipe (4) respectively, the other end of the first front flow guide pipe (3) is connected with the first air duct (1), the other end of the first rear flow guide pipe (4) is connected with the second air duct (2), the second air powder adjusting valve (8) is connected with a second front flow guide pipe (6) and a second rear flow guide pipe (7) respectively, the other end of the second front flow guide pipe (6) is connected with the first air duct (1), the other end of the second rear flow guide pipe (7) is connected with the second air duct (2), the first air duct (1) and the second air duct (2) are respectively provided with a first adjusting block (9) and a second adjusting block (10), the first adjusting block (9) and the second adjusting block (10) are installed with a connecting shaft (11), the connecting shaft (11) is rotatably connected with bearings (12) embedded in the first air duct (1) and the second air duct (2), the connecting shaft (11) is installed with an adjusting hand wheel (13).

2. A double-disk type wind-pulverized coal regulating valve according to claim 1, wherein: The first adjusting block (9) and the second adjusting block (10) are provided with a recess (20) on the side surface, and the recess (20) is installed with a sealing rubber ring (21).

3. A double-disk type air-powder regulating valve according to claim 1, characterized in that: The adjusting hand wheel (13) is provided with an adjusting block indicating arrow (16), and the end surface of the first air duct (1) and the end surface of the second air duct (2) are provided with a first air powder adjusting valve indicating line (17) and a second air powder adjusting valve indicating line (18).

4. A double-disk type air-powder regulating valve according to claim 1, wherein: The first air powder adjusting valve (5) and the second air powder adjusting valve (8) are provided with an angle indicating arrow (22) on the disc, and the valve body of the first air powder adjusting valve (5) and the second air powder adjusting valve (8) is provided with an angle indicating line (23).

5. A double-disk type wind-pulverized coal regulating valve according to claim 1, wherein: The first adjusting block (9) and the second adjusting block (10) are of cylindrical structure, and the two end surfaces of the first adjusting block (9) and the second adjusting block (10) facing opposite directions are chamfered surfaces.

6. A double-disk type air-powder regulating valve according to claim 1, characterized in that: The first air powder adjusting valve (5) is provided with a first flange plate (14) between the first front flow guide pipe (3) and the first rear flow guide pipe (4), and the two ends of the first air powder adjusting valve (5) are fixedly connected with the first front flow guide pipe (3) and the first rear flow guide pipe (4) through the first flange plate (14), the second air powder adjusting valve (8) is provided with a second flange plate (15) between the second front flow guide pipe (6) and the second rear flow guide pipe (7), and the two ends of the second air powder adjusting valve (8) are fixedly connected with the second front flow guide pipe (6) and the second rear flow guide pipe (7) through the second flange plate (15).

7. A double-disk type wind-pulverized coal regulating valve according to claim 1, wherein: The surface of the first adjusting block (9) and the second adjusting block (10) is provided with a wear-resistant layer (19), and the wear-resistant layer (19) is a ceramic layer.

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