CN211423404U

CN211423404U - Double-shaft double-disc flue stop valve

Info

Publication number: CN211423404U
Application number: CN201922360131.1U
Authority: CN
Inventors: 赵顺忠
Original assignee: Jiangsu Zhongwei Energy Saving Technology Co ltd
Current assignee: Jiangsu Zhongwei Energy Saving Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-04
Anticipated expiration: 2029-12-25

Abstract

The double-shaft double-disc flue stop valve comprises a first arm rod and a second arm rod, wherein a plug is formed at the head of the second arm rod, a slot is formed in the first arm rod, and the plug is inserted in the slot of the first arm rod; the first arm rod is inserted with a T-shaped pin shaft, the pin shaft penetrates through the plug and is fixed with a limiting sleeve through the first arm rod insertion sleeve, and the pin shaft is inserted and fixed in the plug; a first wire slot communicated with the slot is formed in the first arm rod; a second wire groove is formed in the second arm lever and the plug; a threading groove for communicating the second thread groove with the slot is formed on the outer wall opposite to the pin shaft; the flat rubber strip is inserted in the threading groove of the pin shaft, rubber blocks are formed at two ends of the rubber strip, and the rubber blocks at the two ends of the rubber strip are respectively inserted and fixed in the first wire groove of the first arm rod and the second wire groove of the second arm rod. The winding displacement of the rotary joint of the mechanical arm is arranged in the rubber strip which can be flexibly deformed, and the rubber strip is utilized to protect the wiring harness, so that the wiring harness can be prevented from being damaged.

Description

Double-shaft double-disc flue stop valve

The technical field is as follows:

the utility model relates to a technical field of valve, more specifically say and relate to two dish flue stop valves of biax.

Background art:

the kiln tail waste heat boiler bypass valve is used as key auxiliary equipment for connecting pure low-temperature waste heat power generation and a cement production line, and is directly related to stable operation of a cement kiln, full utilization of waste gas and operation efficiency and reliability of the whole system. The existing bypass valve of the SP furnace for waste heat power generation of a cement line is sealed by adjusting a valve through an electric actuator, dust abrasion often occurs on a shutter valve due to structural reasons, the shutter valve is deformed under the influence of temperature to gradually increase gaps among blades, leakage quantity is increased accordingly, stable operation of waste heat power generation is influenced, and failure rate is high;

meanwhile, an electric actuator for driving the valve to a fully open or fully closed position by the existing louver valve is an angular travel electric actuator, and the angular travel electric actuator is one of the most common and reliable types of actuators. The single-phase or three-phase motor is used for driving the gear to finally drive the valve rod, and the valve rod enables the shaft to move to open or close the valve; however, the torque force of the electric actuator cannot be directly converted into the torque force of the valve switch, and a connecting arm needs to be additionally arranged, so that the force arm of the electric actuator drives the shaft to open and close the valve. An included angle between the connecting arm and the force arm of the electric actuator is often blocked in the movement process, force conduction between the connecting arm and the force arm of the electric actuator generates conflict, and the load of the electric actuator is increased.

The utility model has the following contents:

the utility model aims at overcoming the defects of the prior art and providing a double-shaft double-disc flue stop valve which realizes tight closing and flexible opening and closing of the valve; and adopt straight stroke thrust executor, can convert thrust into the required torsion of drive axostylus axostyle, cancelled the intermediate linking arm, do not worry, the linking arm length, contained angle and the problem of torsion conversion, increased electric actuator's life.

The double-shaft double-disc flue stop valve comprises a stop valve and a flue, wherein the flue is provided with the stop valve, the stop valve consists of two cylindrical valve bodies, and the valve bodies are fixed together in a side-by-side manner; the fixed valve plate is obliquely and elliptically inserted into the stop valve and consists of two semielliptical valve plate units which are respectively fixed on the inner walls of the two valve bodies; the valve plate unit is provided with a circular communication hole, and a fixed sealing ring is fixed on the valve plate unit around the communication hole; the valve plate unit is provided with a circular movable valve plate opposite to the communicating hole; the outer edge of the movable valve plate is fixed with a movable sealing ring, and the inner rings of the movable sealing ring and the fixed sealing ring are conical surfaces and are abutted against each other;

an inclined linkage arm is fixed on the movable valve plate, a rotating shaft is fixed on one end of the linkage arm, which is far away from the movable valve plate, in a plug bush manner, two ends of the rotating shaft penetrate through the valve body and are hinged on a bearing block, the bearing block is fixed on a support frame, and the support frame is fixed on the outer wall of the valve body; the one end of rotation axis is stretched out the bearing frame plug bush and is fixed with the actuating arm, and the one end that the actuating arm deviates from the rotation axis articulates through the articulated shaft has the connector, and articulated on the connector has drive screw, and the spiro union has the location swivel nut on the drive screw, and the location swivel nut articulates on the mount pad, and the mount pad is fixed on the valve body.

Preferably, a connecting shaft is formed on the positioning threaded sleeve and hinged to the mounting seat through a bearing, and a supporting bracket is fixed on the mounting seat and fixed on the outer wall of the valve body.

Preferably, one end of the driving screw rod, which is close to the connector, is in threaded connection with two groups of nuts, two nuts in each group of nuts are abutted against each other; the driving screw is inserted in the connector, and the two groups of nuts are distributed on the inner side and the outer side of the connector.

Preferably, the rotating shaft is sleeved with a sliding bearing, and the sliding bearing is inserted and fixed on the valve body.

Preferably, the movable sealing ring and the movable valve plate are fixed in a manner that a movable check ring is fixedly connected to the movable valve plate through a bolt, and the movable sealing ring is clamped between the movable valve plate and the movable check ring; the valve plate unit is fixedly connected with a fixed check ring through a bolt, and the fixed check ring is clamped between the fixed check ring and the valve plate unit.

Preferably, the diameter of the outer ring of the movable sealing ring is larger than that of the movable valve plate, and the diameter of the inner ring of the fixed sealing ring is smaller than the aperture of the communicating hole in the valve plate unit.

Preferably, the movable valve plate is respectively fixed with an annular outer rib plate and an annular inner rib plate, a linear rib plate is fixedly connected between the inner rib plate and the outer rib plate, and the rib plate is fixed on the movable valve plate.

Preferably, the rotating shafts on two sides of the linkage arm are sleeved with support sleeves in an inserting mode, support rods are fixed on the support sleeves, and the support rods are fixed on the valve plate unit.

Preferably, two rotating shafts in the stop valve are distributed on two sides of the fixed valve plate, and the inclination angle of the fixed valve plate is 45 degrees; one end of the driving screw, which is far away from the connector, is fixedly connected with a rotating shaft of a motor through a coupler, the motor is fixed on a sliding seat, a guide rail is inserted on the sliding seat and is fixed on a linkage plate, and the linkage plate is fixedly connected with a positioning threaded sleeve.

The beneficial effects of the utility model reside in that:

1. the valve is tightly closed, flexibly opened and closed, high temperature resistant, non-deformable, reliable in operation and less than 1% in leakage; the high-temperature flue gas completely enters the waste heat boiler, so that waste heat energy is fully utilized, and the benefit of waste heat power generation is increased.

2. The valve fully considers the large dust content of kiln tail flue gas in design, and dust is not accumulated when the valve is completely closed, so that the problem that the accumulated dust enters a high-temperature fan to cause the fan to be regulated and stopped when the conventional flue valve is opened is solved.

3. This valve adopts straight stroke thrust executor, can convert thrust into the required torsion of drive axostylus axostyle, has cancelled middle linking arm, does not worry, and the problem of linking arm length, contained angle and torsion conversion has increaseed electric actuator's life.

Description of the drawings:

FIG. 1 is a schematic structural view of a valve plate unit of the present invention;

fig. 2 is a schematic view of the valve of the present invention when opened;

fig. 3 is a schematic view of the valve of the present invention when closed;

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

In the figure: 1. a valve body; 2. a valve unit; 3. a movable valve; 31. an outer rib plate; 32. an inner rib plate; 33. a rib plate; 4. a linkage arm; 5. a rotating shaft; 6. a sliding bearing; 7. a bearing seat; 8. a support frame; 9. a drive arm; 10. a connector; 11. a drive screw; 12. positioning threaded sleeves; 13. a mounting seat; 14. a flue; 15. a support sleeve; 16. a support rod; 17. a movable sealing ring; 18. fixing a sealing ring; 19. fixing a check ring; 20. and a movable retainer ring.

The specific implementation mode is as follows:

example (b): as shown in fig. 1 to 4, the double-shaft double-disc flue stop valve comprises a stop valve and a flue 14, wherein the flue 14 is provided with the stop valve, the stop valve is composed of two cylindrical valve bodies 1, and the valve bodies 1 are fixed together in a side-by-side manner; an obliquely-arranged elliptic fixed valve plate is inserted in the stop valve, the fixed valve plate consists of two semielliptic valve plate units 2, and the valve plate units 2 are respectively fixed on the inner walls of the two valve bodies 1; a circular communication hole is formed in the valve plate unit 2, and a fixed sealing ring 18 is fixed on the valve plate unit 2 around the communication hole; the valve plate unit 2 is provided with a circular movable valve plate 3 opposite to the communication hole; a movable sealing ring 17 is fixed on the outer edge of the movable valve plate 3, and the inner rings of the movable sealing ring 17 and the fixed sealing ring 18 are conical surfaces and are abutted against each other;

an inclined linkage arm 4 is fixed on the movable valve plate 3, a rotating shaft 5 is fixed at one end of the linkage arm 4, which is far away from the movable valve plate 3, in a plug bush manner, two ends of the rotating shaft 5 penetrate through the valve body 1 and are hinged on a bearing block 7, the bearing block 7 is fixed on a support frame 8, and the support frame 8 is fixed on the outer wall of the valve body 1; the one end of rotation axis 5 stretches out bearing frame 7 plug bush and is fixed with actuating arm 9, and the one end that actuating arm 9 deviates from rotation axis 5 articulates through the articulated shaft has connector 10, and articulated on the connector 10 have a driving screw 11, and the spiro union has location swivel nut 12 on the driving screw 11, and location swivel nut 12 articulates on mount pad 13, and mount pad 13 is fixed on valve body 1.

Preferably, a connecting shaft is formed on the positioning threaded sleeve 12 and hinged on the mounting seat 13 through a bearing, and a supporting bracket is fixed on the mounting seat 13 and fixed on the outer wall of the valve body 1.

Preferably, one end of the driving screw 11, which is close to the connector 10, is screwed with two groups of nuts, two nuts in each group of nuts are abutted against each other; the driving screw 11 is inserted in the connector 10, and the two groups of nuts are distributed on the inner side and the outer side of the connector 10.

Preferably, the rotating shaft 5 is inserted with a sliding bearing 6, and the sliding bearing 6 is inserted and fixed on the valve body 1.

Preferably, the movable sealing ring 17 and the movable valve plate 3 are fixed in a manner that a movable check ring 20 is fixedly connected to the movable valve plate 3 through a bolt, and the movable sealing ring 17 is clamped between the movable valve plate 3 and the movable check ring 20; the valve plate unit 2 is fixedly connected with a fixed retainer ring 19 through bolts, and the fixed seal ring 18 is clamped between the fixed retainer ring 19 and the valve plate unit 2.

Preferably, the diameter of the outer ring of the dynamic sealing ring 17 is larger than that of the dynamic valve plate 3, and the diameter of the inner ring of the fixed sealing ring 18 is smaller than the aperture of the communicating hole on the valve plate unit 2.

Preferably, the movable valve plate 3 is respectively fixed with an annular outer rib plate 31 and an annular inner rib plate 32, a linear rib plate 33 is fixedly connected between the inner rib plate 32 and the outer rib plate 31, and the rib plate 33 is fixed on the movable valve plate 3.

Preferably, the rotating shafts 5 at two sides of the linkage arm 4 are inserted and sleeved with support sleeves 15, support rods 16 are fixed on the support sleeves 15, and the support rods 16 are fixed on the valve plate unit 2.

Preferably, two rotating shafts 5 in the stop valve are distributed on two sides of the fixed valve plate, and the inclination angle of the fixed valve plate is 45 degrees; one end of the driving screw rod 11 departing from the connector 10 is fixedly connected with a rotating shaft of a motor through a coupler, the motor is fixed on a sliding seat, a guide rail is inserted on the sliding seat and is fixed on a linkage plate, and the linkage plate is fixedly connected with the positioning threaded sleeve 12.

The working principle is as follows: the utility model relates to a double-shaft double-disc flue stop valve, which adopts a movable sealing ring 17 and a fixed sealing ring 18, wherein the movable sealing ring 17 is arranged on a movable valve 3, and the fixed sealing ring 18 is arranged on a valve unit 2 of a fixed valve plate; complete sealing can be realized by matching the movable sealing ring 17 with the fixed sealing ring 18, as shown in FIG. 4;

as shown in fig. 2, the valve 3 is opened, and the execution structure adopts a screw structure; the screw rod can move, so that the driving arm 9 can rotate, and the rotating shaft 5 can be driven to rotate; the rotating shaft 5 can close the movable valve 3, as shown in fig. 3; the actuating mechanism skips the force transmission conflict generated by the included angle of the connecting arm brought by the angular travel actuator and is directly driven by the thrust generated by the driving screw; the service life of the electric actuator can be increased.

The examples are intended to be illustrative, but not limiting, of the invention. The embodiments can be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the present invention should be determined by the appended claims.

Claims

1. The double-shaft double-disc flue stop valve comprises a stop valve and a flue (14), wherein the flue (14) is provided with the stop valve, the stop valve consists of two cylindrical valve bodies (1), and the valve bodies (1) are fixed together in a side-by-side manner; the method is characterized in that: an obliquely-arranged elliptic fixed valve plate is inserted in the stop valve, the fixed valve plate consists of two semielliptic valve plate units (2), and the valve plate units (2) are respectively fixed on the inner walls of the two valve bodies (1); a circular communication hole is formed in the valve plate unit (2), and a fixed sealing ring (18) is fixed on the valve plate unit (2) around the communication hole; the valve plate unit (2) is provided with a circular movable valve plate (3) opposite to the communicating hole; a movable sealing ring (17) is fixed on the outer edge of the movable valve plate (3), and the inner rings of the movable sealing ring (17) and the fixed sealing ring (18) are conical surfaces and are abutted against each other;

an inclined linkage arm (4) is fixed on the movable valve plate (3), a rotating shaft (5) is fixed at one end, away from the movable valve plate (3), of the linkage arm (4) in a plug bush mode, two ends of the rotating shaft (5) penetrate through the valve body (1) and are hinged to a bearing seat (7), the bearing seat (7) is fixed to a supporting frame (8), and the supporting frame (8) is fixed to the outer wall of the valve body (1); the one end of rotation axis (5) stretches out bearing frame (7) plug bush and is fixed with actuating arm (9), and the one end that actuating arm (9) deviates from rotation axis (5) articulates through the articulated shaft has connector (10), and it has drive screw (11) to articulate on connector (10), and the spiro union has location swivel nut (12) on drive screw (11), and location swivel nut (12) articulate on mount pad (13), and mount pad (13) are fixed on valve body (1).

2. The double-shaft double-disc flue stop valve of claim 1, wherein: the positioning threaded sleeve (12) is formed with a connecting shaft, the connecting shaft is hinged to the mounting seat (13) through a bearing, a supporting bracket is fixed on the mounting seat (13), and the supporting bracket is fixed on the outer wall of the valve body (1).

3. The double-shaft double-disc flue stop valve of claim 1, wherein: one end of the driving screw rod (11) close to the connector (10) is in threaded connection with two groups of nuts, two nuts in each group are arranged, and the two nuts in each group abut against each other; the driving screw rod (11) is inserted in the connector (10), and the two groups of nuts are distributed on the inner side and the outer side of the connector (10).

4. The double-shaft double-disc flue stop valve of claim 1, wherein: the rotating shaft (5) is sleeved with a sliding bearing (6), and the sliding bearing (6) is inserted and fixed on the valve body (1).

5. The double-shaft double-disc flue stop valve of claim 1, wherein: the movable sealing ring (17) and the movable valve plate (3) are fixed in a way that a movable check ring (20) is fixedly connected to the movable valve plate (3) through a bolt, and the movable sealing ring (17) is clamped between the movable valve plate (3) and the movable check ring (20); the valve plate unit (2) is fixedly connected with a fixed check ring (19) through a bolt, and the fixed check ring (18) is clamped between the fixed check ring (19) and the valve plate unit (2).

6. The double-shaft double-disc flue stop valve of claim 5, wherein: the diameter of the outer ring of the movable sealing ring (17) is larger than that of the movable valve plate (3), and the diameter of the inner ring of the fixed sealing ring (18) is smaller than the aperture of the communicating hole in the valve plate unit (2).

7. The double-shaft double-disc flue stop valve of claim 1, wherein: the movable valve plate (3) is respectively fixed with an annular outer rib plate (31) and an annular inner rib plate (32), a linear rib plate (33) is fixedly connected between the inner rib plate (32) and the outer rib plate (31), and the rib plate (33) is fixed on the movable valve plate (3).

8. The double-shaft double-disc flue stop valve of claim 1, wherein: the linkage arm is characterized in that support sleeves (15) are inserted and sleeved on the rotating shafts (5) on two sides of the linkage arm (4), support rods (16) are fixed on the support sleeves (15), and the support rods (16) are fixed on the valve plate unit (2).

9. The double-shaft double-disc flue stop valve of claim 1, wherein: two rotating shafts (5) in the stop valve are distributed on two sides of the fixed valve plate, and the inclination angle of the fixed valve plate is 45 degrees; one end of the driving screw rod (11) departing from the connector (10) is fixedly connected with a rotating shaft of a motor through a coupler, the motor is fixed on a sliding seat, a guide rail is inserted on the sliding seat and is fixed on a linkage plate, and the linkage plate is fixedly connected with a positioning threaded sleeve (12).