CN210153232U

CN210153232U - Switching and adjusting equipment for flue gas and waste gas pipelines

Info

Publication number: CN210153232U
Application number: CN201920897528.1U
Authority: CN
Inventors: 施昌平; 文宇
Original assignee: Hubei Tianjin Source Valve Manufacturing Ltd By Share Ltd
Current assignee: Hubei Tianjin Source Valve Manufacturing Ltd By Share Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-03-17
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a switching and adjusting device for flue gas and waste gas pipelines, which comprises a valve formed by a valve body and a valve plate which are mutually matched, wherein the valve body is of a frame body type structure, and the valve plate is movably fixed in the frame body of the valve body through a fixing mechanism; when the valve plate is used, the electric actuating mechanism is adopted to drive the fixing mechanism so as to drive the valve plate to rotate in the valve body, and the valve plate and the valve body are opened/closed; the smoke sealing mechanism comprises an electric butterfly valve communicated with the side wall of the valve body and a heater connected with an electric butterfly valve, and the heater is connected with a sealing fan; when the valve plate and the valve body are in a completely closed state, the electric butterfly valve is opened, the heater works, the sealing fan is started, and the air pressure of the sealing fan is greater than the air pressure of the flue gas or the waste gas in the pipeline, so that the flue gas or the waste gas cannot pass through the valve.

Description

Switching and adjusting equipment for flue gas and waste gas pipelines

Technical Field

The utility model relates to a governing valve, concretely relates to switching controlgear for flue gas, exhaust gas pipeline.

Background

The flap valve is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media. The hard sealing butterfly valve mainly plays the roles of cutting off and throttling on the pipeline. The valve plate is a starting and closing piece and rotates around the axis of the valve plate in the valve body, so that the purpose of starting and closing or adjusting is achieved. The hard sealing butterfly valve is suitable for pipelines for conveying various corrosive and non-corrosive fluid media in producer furnaces, coal gas, steam, natural gas, urban coal gas, cold and hot air, chemical smelting engineering and power generation environment-friendly systems, and is used for regulating and cutting off the flow of the media. However, in the maintenance process, the existing flap valve has the risks of smoke leakage and environmental pollution.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model aims to provide a switching controlgear for flue gas, exhaust gas line has solved among the prior art flue gas and has leaked, causes the high technical problem of environmental pollution risk.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a switching regulating device for flue gas and waste gas pipelines comprises a valve formed by a valve body and a valve plate which are matched with each other, wherein the valve body is of a frame structure, and the valve plate is movably fixed in the frame of the valve body through a fixing mechanism; when the valve plate is used, the electric actuating mechanism is adopted to drive the fixing mechanism so as to drive the valve plate to rotate in the valve body, and the valve plate and the valve body are opened/closed;

the smoke sealing mechanism comprises an electric butterfly valve communicated with the side wall of the valve body and a heater connected with an electric butterfly valve, and the heater is connected with a sealing fan; when the valve plate and the valve body are in a completely closed state, the electric butterfly valve is opened, the heater works, the sealing fan is started, and the air pressure of the sealing fan is greater than the air pressure of the flue gas or the waste gas in the pipeline, so that the flue gas or the waste gas cannot pass through the valve.

The fixing mechanism comprises a rotating shaft fixedly connected with the valve plate, and two ends of the rotating shaft are fixed with the valve body through fixing components; the electric actuator comprises an electric actuator and a connecting rod mechanism, and the rotating shaft is connected with the electric actuator through the connecting rod mechanism; the electric actuator works to drive the connecting rod mechanism to rotate so as to drive the rotating shaft to rotate.

Furthermore, the fixed assembly comprises spherical bearing seats and shaft end sealing covers, two ends of the bearing are respectively arranged in the two spherical bearing seats, a rotating shaft between the spherical bearing seats and the valve body outer frame is respectively sleeved with a body sleeve support, and the rotating shaft and the frame of the valve plate are sealed by the shaft end sealing covers.

The electric actuator is arranged on the mounting box; one end of the connecting rod mechanism is connected with an output shaft of the electric actuator, and the other end of the connecting rod mechanism is connected with a rotating shaft arranged in the installation box.

Preferably, the body-sleeve holder comprises a one-piece sleeve holder formed by a conical table and a cylinder; the large end face of the conical table is connected with the valve body, the small end face of the conical table is connected with the cylinder, and the inner cavity of the conical table is provided with a shaft hole communicated with the inner cavity of the cylinder;

the diameters of the two end surfaces of the cylinder are different, namely a large-diameter end and a small-diameter end, the small-diameter end of the cylinder is connected with the small end surface of the conical table, and the large-diameter end of the cylinder is connected with the spherical bearing seat; the caliber of the small-caliber end is matched with the shaft hole, and the caliber of the large-caliber end is larger than that of the small-caliber end and is larger than that of the inner cavity of the cylinder.

Furthermore, an air inlet is formed in the valve body and communicated with the electric butterfly valve, and a valve body sealing plate is arranged on the inner side of the valve body.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the electric butterfly valve controls the opening and closing of an air inlet, the heater prevents air from dewing, the sealing fan pressurizes and seals, when the electric butterfly valve is used, the electric butterfly valve is opened, the heater works, the sealing fan is started, the air pressure of the sealing fan is 500-1000 Pa higher than the smoke pressure in the pipeline, the air pressure of the sealing fan enters from the air inlet to form a path of pressure which is strong, smoke is forced not to pass through the valve, and the smoke is completely sealed; preventing the smoke from leaking and polluting the environment.

2. The maintenance of the internal pipelines and parts of the equipment can be ensured under the condition of not stopping the operation, and the economic benefit is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is an enlarged view of the portion L in FIG. 3;

fig. 5 is an enlarged view of a portion B in fig. 1.

In the figure: the valve comprises a valve body 1, a valve plate 2, an electric actuator 3, an electric butterfly valve 4, a heater 5, a sealing fan 6, a rotating shaft 7, a mounting box 8, a body sleeve support 9, a spherical bearing seat 10, a connecting rod mechanism 11, a conical table 12, a cylinder 13, a shaft end sealing cover 14, a right sealing plate 15, an air inlet 16, a left sealing plate 17, a right plate 21 and a left plate 22.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments:

referring to fig. 1-5, a switching and adjusting device for flue gas and waste gas pipelines comprises a valve formed by a valve body 1 and a valve plate 2 which are matched with each other, wherein the valve body 1 is of a frame structure, and the valve plate 2 is movably fixed in the frame of the valve body 1 through a fixing mechanism; when the valve is used, the electric actuating mechanism is adopted to drive the fixing mechanism so as to drive the valve plate 2 to rotate in the valve body 1, and the opening/closing between the valve plate 2 and the valve body 1 is realized; the valve plate 2 has a double-layer structure, namely a left plate 22 and a right plate 21. The valve in the utility model mainly plays the role of cutting off and throttling on the pipeline, the valve plate 2 is an opening and closing piece and rotates around the axis of the valve body 1, thereby achieving the purpose of opening and closing or adjusting; the device is suitable for pipelines for conveying various corrosive and non-corrosive fluid media in producer furnaces, coal gas, steam, natural gas, urban gas, cold and hot air, chemical smelting engineering and power generation environment-friendly systems, and is used for regulating and cutting off the flow of the media.

The smoke sealing device comprises a valve body 1, a smoke sealing mechanism and a sealing fan 6, wherein the valve body 1 is provided with a side wall, and the smoke sealing mechanism is used for sealing smoke or waste gas in a pipeline and comprises an electric butterfly valve communicated with the side wall of the valve body and a heater 5 connected with an electric butterfly valve 4; when the valve plate 2 and the valve body 1 are in a completely closed state, the electric butterfly valve 4 is opened, the heater 5 works, the sealing fan 6 is started, and the air pressure of the sealing fan 6 is greater than the air pressure of smoke or waste gas in the pipeline, so that the smoke or the waste gas cannot pass through the valve. The electric butterfly valve 4 controls the opening and closing of the air inlet 16, the heater 5 prevents air from dewing, the sealing fan 6 pressurizes and seals, when in use, when the valve plate 2 and the valve body 1 are in a completely closed state, the electric butterfly valve 4 is opened, the heater 5 works, the sealing fan 6 is started, the air pressure of the sealing fan 6 is 500-1000 Pa higher than the smoke pressure in the pipeline, the air pressure of the sealing fan 6 enters from the air inlet 16 to form a pressure, the smoke is forced not to pass through the valve, and the smoke is completely sealed; preventing the smoke from leaking and polluting the environment. The maintenance of the internal pipelines and parts of the equipment can be ensured under the condition of not stopping the operation, and the economic benefit is improved.

The fixing mechanism comprises a rotating shaft 7 fixedly connected with the valve plate 2, and two ends of the rotating shaft 7 are fixed with the valve body 1 through fixing components; the electric actuator comprises an electric actuator 3 and a link mechanism 11, and the rotating shaft 7 is connected with the electric actuator 3 through the link mechanism 11; the electric actuator 3 works to drive the link mechanism 11 to rotate so as to drive the rotating shaft 7 to rotate, and the rotating shaft 7 drives the valve plate 2 to rotate synchronously with the valve plate. According to the setting requirement, when the valve plate 2 needs to be closed, the electric actuator 3 is controlled to work to drive the motor to rotate, the motor drives the connecting rod mechanism 11 to rotate, the tail end of the connecting mechanism is connected with the rotating shaft 7, therefore, the rotating shaft 7 is driven to rotate, the rotating shaft 7 rotates to drive the valve plate 2 to rotate around the rotating shaft 7, and the valve plate 2 is matched with the valve body 1 to form sealing. When the set execution signal needs to open the valve plate 2, the motor drives the connecting rod mechanism 11 to rotate, the connecting rod mechanism 11 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the valve plate 2 to rotate around the rotating shaft 7 so that the valve plate and the valve body 1 are staggered, so that the valve plate 2 can be opened. The utility model provides an electric actuator 3's theory of operation is prior art, no longer explains.

Referring to fig. 5, the fixing assembly includes spherical bearing seats 10 and shaft end sealing covers 14, two ends of the bearing are respectively disposed in the two spherical bearing seats 10, body sleeve brackets 9 are respectively sleeved on a rotating shaft 7 between the spherical bearing seats 10 and an outer frame of the valve body 1, and the rotating shaft 7 and a frame of the valve plate 2 are both sealed by the shaft end sealing covers 14; the fixing stability of the rotating shaft 7 is high. The body sleeve support 9 comprises an integrated sleeve support formed by a conical table 12 and a cylinder 13; the big end face of the conical table 12 is connected with the valve body 1, the small end face of the conical table 12 is connected with the cylinder 13, and the inner cavity of the conical table 12 is provided with a shaft hole communicated with the inner cavity of the cylinder 13; the calibers of the two end faces of the cylinder 13 are different in size and are respectively a large-caliber end and a small-caliber end, the small-caliber end of the cylinder 13 is connected with the small end face of the conical table 12, and the large-caliber end of the cylinder 13 is connected with the spherical bearing seat 10; the caliber of the small-caliber end is matched with the shaft hole, and the caliber of the large-caliber end is larger than that of the small-caliber end and is larger than that of the inner cavity of the cylinder 13. The big end face of the conical table 12 is connected with the valve body 1, so that the contact area between the body sleeve support 9 and the valve body 1 is increased, and the stability is higher after the fixation. The rotating shaft 7 penetrates through the shaft hole and the cylinder 13, an annular notch is formed in the inner wall of the shaft hole, a packing layer is arranged in the notch, the rotating shaft 7 is flexibly connected with the conical table 12, friction is reduced, and the packing layer is pressed through the pressing plate; when the device is installed, the pressing plate is put into the cylinder 13 from the large-caliber end to be fixed with the side wall of the small-caliber end of the cylinder 13; the small-caliber is used for installing the rotating shaft 7, and the large-caliber is used for not only allowing the rotating shaft 7 to pass through but also facilitating installation of the pressing plate and the packing layer; the rotating shaft 7 is arranged in the spherical bearing mounting seat, and the spherical bearing mounting seat is fixed with the large-caliber end of the cylinder 13. The body sleeve support 9 has the advantages of ingenious and light structural design and stable and convenient installation. The rotating shaft 7 and the frame of the valve plate 2 are sealed by the shaft end sealing cover 14, so that dust is prevented from entering.

Furthermore, the electric actuator further comprises a mounting box 8, wherein the mounting box 8 is arranged at one end of one of the rotating shafts 7, the end of the rotating shaft 7 extends into the mounting box 8, and the electric actuator 3 is arranged on the mounting box 8; one end of the link mechanism 11 is connected with an output shaft of the electric actuator 3, and the other end is connected with the rotating shaft 7 arranged in the installation box 8. The mounting box 8 not only starts to support fixed effect to electric actuator 3, installs the tip of pivot 7 inside it simultaneously and forms sealedly, prevents that dust, rainwater from getting into, and the spherical bearing seat 10 of the one end that pivot 7 and electric actuator 3 are connected also arranges the mount pad in, sealed protection.

Open on the valve body 1 has air inlet 16, this air inlet 16 and electric butterfly valve 4 intercommunication, and the inboard of valve body 1 is equipped with the valve body 1 closing plate, is left closing plate 17, right closing plate 15 respectively for whole space seal sets up, strengthens stopping that the flue gas leaks and causes environmental pollution.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A switch controlgear for flue gas, waste gas pipeline which characterized in that: the valve comprises a valve body (1) and a valve plate (2) which are matched with each other, wherein the valve body (1) is of a frame structure, and the valve plate (2) is movably fixed in the frame of the valve body (1) through a fixing mechanism; when the valve plate is used, the electric actuating mechanism is adopted to drive the fixing mechanism so as to drive the valve plate (2) to rotate in the valve body (1), and the valve plate (2) and the valve body (1) are opened/closed;

the smoke sealing device comprises a valve body (1), a smoke sealing mechanism and a fan, wherein the valve body is provided with a side wall, the side wall is provided with an electric butterfly valve (4), the smoke sealing mechanism is used for sealing smoke or waste gas in a pipeline and comprises an electric butterfly valve communicated with the side wall of the valve body (1) and a heater (5), and the heater (5) is connected with a sealing fan (6); when the valve plate (2) and the valve body (1) are in a completely closed state, the electric butterfly valve (4) is opened, the heater (5) works, the sealing fan (6) is started, and the air pressure of the sealing fan (6) is greater than the air pressure of smoke or waste gas in the pipeline, so that the smoke or the waste gas cannot pass through the valve.

2. The switching regulator for flue gas, exhaust gas ducts according to claim 1, characterized in that: the fixing mechanism comprises a rotating shaft (7) fixedly connected with the valve plate (2), and two ends of the rotating shaft (7) are fixed with the valve body (1) through fixing components; the electric actuator comprises an electric actuator (3) and a link mechanism (11), and the rotating shaft (7) is connected with the electric actuator (3) through the link mechanism (11); the electric actuator (3) works to drive the connecting rod mechanism (11) to rotate so as to drive the rotating shaft (7) to rotate.

3. The switching regulator for flue gas, exhaust gas ducts according to claim 2, characterized in that: the fixed assembly comprises spherical bearing seats (10) and shaft end sealing covers (14), two ends of the bearing are arranged in the two spherical bearing seats (10) respectively, a body sleeve support (9) is sleeved on a rotating shaft (7) between the spherical bearing seats (10) and the outer frame of the valve body (1) respectively, and the rotating shaft (7) and the frame of the valve plate (2) are sealed by the shaft end sealing covers (14).

4. The switching regulator for flue gas, exhaust gas ducts according to claim 3, characterized in that: the electric actuator is characterized by further comprising an installation box (8), wherein the installation box (8) is arranged at one end of one rotating shaft (7), the end of the rotating shaft (7) extends into the installation box (8), and the electric actuator (3) is arranged on the installation box (8); one end of the connecting rod mechanism (11) is connected with an output shaft of the electric actuator (3), and the other end is connected with a rotating shaft (7) arranged in the installation box (8).

5. The switching regulator for flue gas, exhaust gas ducts according to claim 3, characterized in that: the body sleeve support (9) comprises an integrated sleeve support formed by a conical table (12) and a cylinder (13); the big end face of the conical table (12) is connected with the valve body (1), the small end face of the conical table (12) is connected with the cylinder (13), and the inner cavity of the conical table (12) is provided with a shaft hole communicated with the inner cavity of the cylinder (13);

the calibers of two end faces of the cylinder (13) are different in size and are respectively a large-caliber end and a small-caliber end, the small-caliber end of the cylinder (13) is connected with the small end face of the conical table (12), and the large-caliber end of the cylinder (13) is connected with the spherical bearing seat (10); the caliber of the small-caliber end is matched with the shaft hole, and the caliber of the large-caliber end is larger than that of the small-caliber end and is larger than that of the inner cavity of the cylinder (13).

6. The switching regulating device for flue gas, exhaust gas ducts according to any of claims 1 to 5, characterized in that: an air inlet (16) is formed in the valve body (1), the air inlet (16) is communicated with the electric butterfly valve (4), and a sealing plate of the valve body (1) is arranged on the inner side of the valve body (1).