CN210034454U - Soft sealing type flue gas valve - Google Patents
Soft sealing type flue gas valve Download PDFInfo
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- CN210034454U CN210034454U CN201920689909.0U CN201920689909U CN210034454U CN 210034454 U CN210034454 U CN 210034454U CN 201920689909 U CN201920689909 U CN 201920689909U CN 210034454 U CN210034454 U CN 210034454U
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Abstract
The utility model discloses a soft sealing type flue gas valve, which comprises a valve plate, a valve body and a hollow valve rod; an upper packing groove is formed in the top of the valve body, and a lower packing groove is formed in the bottom of the valve body; the hollow valve rod vertically penetrates through the upper filling groove, then penetrates through the interior of the valve body and penetrates through the lower filling groove, and meanwhile, the hollow valve rod is fixedly connected with the valve plate; the valve plate is provided with a valve plate spring groove along the circumferential direction, a spring steel sheet is arranged in the valve plate spring groove in an enclosing manner, a second flexible graphite packing is arranged on the outer side of the spring steel sheet in an enclosing manner, and the second flexible graphite packing and the sealing ring jointly seal the valve plate spring groove; the valve plate spring groove is communicated with an inflation tube, the inflation tube is communicated with a hollow valve rod, the hollow valve rod is communicated with a hose quick connector, and the hose quick connector is communicated with compressed air through a hose. The product has more lasting sealing effect, obviously reduces the flue gas leakage rate, is convenient to maintain and low in operation cost, and can meet different requirements of industries such as electric power, metallurgy, petrifaction and ships.
Description
Technical Field
The utility model relates to a flue gas valve especially relates to a soft sealing formula flue gas valve.
Background
With the continuous development of scientific technology and the continuous progress of environmental protection career, the technical requirements of China on equipment required by environmental protection treatment in industries such as electric power, metallurgy, petrifaction and ships are higher and higher. The existing flue gas valve has various types such as a backseat type, a triple eccentric type, a double-valve-plate airtight type and the like, wherein the triple eccentric type flue gas valve has very wide use due to the structural advantage of a triple eccentric type conventional butterfly valve. Usually, the sealing effect of three eccentric flue gas valves is very outstanding when just beginning to put into use, theoretical leakage rate can be as low as 0-0.1%, but along with the extension of live time, valve seat circle and valve plate all can have the deposition phenomenon by inevitable, can lead to the valve plate not to close tight in the time, the problem of leakage rate increase takes place, still can produce the valve plate serious wear simultaneously, the big problem of moment of torsion, not only can delay normal work, still can cause the inconvenience for the use, improve the construction use cost and the operation cost of valve, it is troublesome to increase many unnecessary.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a soft sealing type smoke valve.
In order to solve the technical problem, the utility model discloses a technical scheme is: a soft sealing type flue gas valve comprises a valve plate, a valve body and a hollow valve rod; the valve plate is positioned in the valve body, the top of the valve body is provided with an upper packing groove, and the bottom of the valve body is provided with a lower packing groove; the hollow valve rod vertically penetrates through the upper packing groove, then penetrates through the interior of the valve body and penetrates through the lower packing groove, and the hollow valve rod is fixedly connected with the valve plate through a fixing piece;
the upper part of the hollow valve rod is provided with a hollow valve rod upper gland, the hollow valve rod upper gland is fixedly connected to the upper end of an upper packing groove through a fixing bolt, a first flexible graphite packing is arranged between the upper packing groove and the hollow valve rod in a sealing mode, and the first flexible graphite packing is arranged outside the hollow valve rod in a surrounding mode; the bottom end of the hollow valve rod is fixedly connected with a lower sealing cover of the hollow valve rod, and the lower sealing cover of the hollow valve rod is connected with the lower packing groove in a sealing way through a fixing bolt; an upper valve rod sliding bearing is arranged below the first flexible graphite packing, and the upper valve rod sliding bearing is arranged on the hollow valve rod in a surrounding mode; a lower valve rod sliding bearing is arranged between the hollow valve rod and the lower packing groove, and the lower valve rod sliding bearing is arranged on the hollow valve rod in an enclosing manner;
the valve plate is provided with a valve plate spring groove along the circumferential direction, a spring steel sheet is arranged in the valve plate spring groove in an enclosing manner, a second flexible graphite packing is arranged on the outer side of the spring steel sheet in an enclosing manner, the second flexible graphite packing and a sealing ring jointly seal the valve plate spring groove, and the sealing ring is fixed on the same side of the spring steel sheet and the second flexible graphite packing through a fixing bolt;
the valve plate spring groove is communicated with an inflation tube, the inflation tube is communicated with the hollow valve rod, the hollow valve rod is communicated with a hose quick connector, and the hose quick connector is positioned above a gland on the hollow valve rod.
Further, a sealing gasket is arranged between the lower sealing cover of the hollow valve rod and the lower filling groove in a sealing mode.
The utility model discloses a soft sealed flue gas valve, a flue gas valve that can effectively solve the flue gas and leak outward, add around the valve plate and be equipped with spring steel sheet and No. two flexible graphite packing, regard as the valve plate sealing ring with No. two flexible graphite packing, carry compressed air through hollow valve rod and carry out spring force to the valve plate sealing ring and restore, make sealed face laminating inseparabler, sealed effect is more lasting, showing and having reduced the flue gas leakage rate, it is convenient to maintain simultaneously, the operation cost is low, can satisfy electric power, control gold, the petrochemical industry different demands such as boats and ships, application range is very extensive.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a side longitudinal sectional view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 1.
In the figure: 1. a hollow valve stem; 2. a hose quick coupling; 3. a hollow valve rod is pressed and covered; 4. feeding a packing groove; 5. an inflation tube; 6. a valve plate; 7. a valve body; 8. a fixing member; 9. a lower sealing cover of the valve rod; 10. a first flexible graphite packing; 11. an upper stem sliding bearing; 12. a spring steel sheet; 13. a second flexible graphite packing; 14. a lower valve stem sliding bearing; 15. a seal ring; 16. and (5) a packing groove is arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the soft sealing type flue gas valve comprises a valve plate 6, a valve body 7 and a hollow valve rod 1; the valve plate 6 is positioned in the valve body 7, the top of the valve body 7 is provided with an upper packing groove 4, and the bottom of the valve body 7 is provided with a lower packing groove 16; the hollow valve rod 1 vertically penetrates through the upper packing groove 4, then penetrates through the interior of the valve body 7 and penetrates through the lower packing groove 16, the hollow valve rod 1 is fixedly connected with the valve plate 6 through the fixing piece 8, and therefore the hollow valve rod 1 can drive the valve plate 6 to rotate or move.
Wherein, as shown in fig. 2, go up and be provided with flexible graphite packing 10 No. one between packing groove 4 and the hollow valve rod 1 in a sealed manner, make flexible graphite packing 10 enclose and establish in the outside of hollow valve rod 1, the sufficient sealed packing groove 4 of going up to guarantee the leakproofness of valve body 7 and the sealed effect of hollow valve rod 1 when rotatory. For fully guaranteeing the sealing stability of a flexible graphite packing 10, the hollow valve rod 1 is provided with the upper gland 3 of the hollow valve rod at the upper part, and the upper gland 3 of the hollow valve rod is fixedly connected with the upper end of the upper packing groove 4 through a fixing bolt, so that the upper gland 3 of the hollow valve rod compresses the flexible graphite packing 10.
The bottom end of the hollow valve rod 1 is fixedly connected with a hollow valve rod lower sealing cover 9, and compressed air needs to be transported due to the hollow interior of the hollow valve rod 1, so that the hollow valve rod 1 is sealed by the hollow valve rod lower sealing cover 9; meanwhile, the lower sealing cover 9 of the hollow valve rod is connected with the lower packing groove 16 in a sealing mode through a fixing bolt, the sealing performance of the valve body 7 is guaranteed, a sealing gasket can be arranged between the lower sealing cover 9 of the hollow valve rod and the lower packing groove 16 in a sealing mode, the sealing performance of the lower sealing cover 9 of the hollow valve rod is improved, and air leakage at the bottom end of the hollow valve rod 1 is prevented.
In addition, in order to ensure the smooth rotation of the hollow valve rod, an upper valve rod sliding bearing 11 is arranged below the first flexible graphite packing 10, and the upper valve rod sliding bearing 11 is arranged on the hollow valve rod 1 in a surrounding manner; a lower valve rod sliding bearing 14 is arranged between the hollow valve rod 1 and the lower packing groove 16, and the lower valve rod sliding bearing 14 is arranged on the hollow valve rod 1 in an enclosing manner; the upper valve rod sliding bearing 11 and the lower valve rod sliding bearing 14 not only drive the hollow valve rod 1 to rotate, but also can support the hollow valve rod.
In order to solve the problems of untight closing of the existing valve plate and increased leakage rate, the utility model discloses a soft sealing type smoke gas valve, the edge of the valve plate 6 is composed of a second flexible graphite packing 13 and a spring steel sheet 12, namely, the spring steel sheet 12 and the second flexible graphite packing 13 are additionally arranged around the valve plate 6, the spring steel sheet 12 mainly acts around the valve plate 6 and is matched with the second flexible graphite packing 13 at the edge to work, the spring steel sheet 12 applies pressure to the second flexible graphite packing 13, so that the second flexible graphite packing 13 is pre-tightened with a valve body 7, if the pressure of the spring steel sheet 12 is insufficient or the second flexible graphite packing 13 is worn, when air leakage exists in the sealing mode, a hose communicated with compressed air is connected into the hose quick connector 2 end at the upper end of a hollow valve rod 1, and then is connected into a valve plate spring groove through an inflation pipe 5 on the hollow valve rod, under the action force of the spring 12 and the double steel sheets of, and a second flexible graphite packing 13 is additionally arranged to be pre-tightened with the valve body 7, so that the sealing effect is better. The specific setting mode is as follows: as shown in fig. 2 and 3, a valve plate spring groove is formed around the valve plate 6 (i.e., in the circumferential direction), a spring steel sheet 12 is arranged in the valve plate spring groove, a second flexible graphite packing 13 is arranged on the outer side of the spring steel sheet 12, the second flexible graphite packing 13 and a sealing ring 15 jointly seal the valve plate spring groove, and the sealing ring 15 is fixed on the same side of the spring steel sheet 12 and the second flexible graphite packing 13 through a fixing bolt; meanwhile, the valve plate spring groove is communicated with an inflation tube 5, the inflation tube 5 is communicated with the hollow valve rod 1, the hollow valve rod 1 is communicated with a hose quick connector 2, the hose quick connector 2 is located above a gland 3 on the hollow valve rod, and therefore the inflation tube 5 is communicated with the hollow valve rod 1 and the valve plate spring groove to transmit compressed air.
The specific working mode of the product is as follows: when the smoke valve is ready to be opened, because the spring steel sheet 12 works to exert a counterforce, if compressed air is introduced into the valve plate spring groove, the hose needs to be rapidly detached from the end of the hose quick joint 2 to release air, so that the pressure in the valve plate spring groove is reduced, and then the valve plate 6 is opened. When the smoke valve is in a closed state, the spring steel sheet 12 applies pressure to the second flexible graphite packing 13, so that the second flexible graphite packing 13 is pre-tightened with the valve body 7; if the pressure like spring steel sheet 12 is not enough or No. two flexible graphite packing 13 have wearing and tearing for when sealed existence leaks gas, will lead to the hose that has compressed air and insert 2 ends of hose quick-operation joint on the hollow valve rod 1, compressed air enters into hollow valve rod 1 inside back rethread inflation pipe 5 and inserts in the valve plate spring groove, under the dual effort through spring steel sheet 12 and compressed air, increases No. two flexible graphite packing 13 and 7 pretensions of valve body, and sealed effect is better. In addition, a first flexible graphite packing 10 is also arranged between the hollow valve rod 1 and the upper packing groove 4, so that the sealing effect of the hollow valve rod 1 during rotation is ensured; the lowest end of the hollow valve rod 1 is provided with a sealing gasket to prevent the bottom end of the hollow valve rod 1 from air leakage, and finally the bottom of the hollow valve rod 1 is sealed by a valve rod lower sealing cover 9, so that the sealing performance of the hollow valve rod 1 is ensured, and the sealing effect of the valve body 7 is also ensured.
The utility model discloses a soft sealed flue gas valve uses the No. two flexible graphite packing that has good characteristics such as compliance, resilience, corrosion-resistant, high pressure resistant, resistant radiation, heat conduction as the valve plate sealing ring, carry compressed air through hollow valve rod and carry out spring force to the valve plate sealing ring and restore, make sealed face laminating inseparabler, sealed effect is more lasting, it is showing and having reduced the flue gas leakage rate, it is convenient to maintain simultaneously, the operation cost is low, can satisfy different demands of trades such as electric power, metallurgical, petrochemical industry, boats and ships, application range is very extensive.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.
Claims (2)
1. The utility model provides a soft sealed flue gas valve, includes valve plate (6), valve body (7), its characterized in that: it also comprises a hollow valve rod (1); the valve plate (6) is positioned inside the valve body (7), an upper packing groove (4) is formed in the top of the valve body (7), and a lower packing groove (16) is formed in the bottom of the valve body (7); the hollow valve rod (1) vertically penetrates through the upper packing groove (4), then penetrates through the interior of the valve body (7) and penetrates through the lower packing groove (16), and the hollow valve rod (1) is fixedly connected with the valve plate (6) through a fixing piece (8);
the upper part of the hollow valve rod (1) is provided with a hollow valve rod upper gland (3), the hollow valve rod upper gland (3) is fixedly connected to the upper end of an upper packing groove (4) through a fixing bolt, a first flexible graphite packing (10) is arranged between the upper packing groove (4) and the hollow valve rod (1) in a sealing mode, and the first flexible graphite packing (10) is arranged outside the hollow valve rod (1) in an enclosing mode; the bottom end of the hollow valve rod (1) is fixedly connected with a hollow valve rod lower sealing cover (9), and the hollow valve rod lower sealing cover (9) is connected with a lower packing groove (16) in a sealing manner through a fixing bolt; an upper valve rod sliding bearing (11) is arranged below the first flexible graphite packing (10), and the upper valve rod sliding bearing (11) is arranged on the hollow valve rod (1) in an enclosing manner; a lower valve rod sliding bearing (14) is arranged between the hollow valve rod (1) and the lower packing groove (16), and the lower valve rod sliding bearing (14) is arranged on the hollow valve rod (1) in an enclosing manner;
the valve plate (6) is provided with a valve plate spring groove along the circumferential direction, a spring steel sheet (12) is arranged in the valve plate spring groove in an enclosing manner, a second flexible graphite packing (13) is arranged on the outer side of the spring steel sheet (12) in an enclosing manner, the second flexible graphite packing (13) and a sealing ring (15) jointly seal the valve plate spring groove, and the sealing ring (15) is fixed on the same side of the spring steel sheet (12) and the second flexible graphite packing (13) through a fixing bolt;
the valve plate spring groove is communicated with an inflation tube (5), the inflation tube (5) is communicated with the hollow valve rod (1), the hollow valve rod (1) is communicated with a hose quick connector (2), and the hose quick connector (2) is located above a gland (3) on the hollow valve rod.
2. The soft seal type flue gas valve according to claim 1, wherein: and a sealing gasket is arranged between the lower sealing cover (9) of the hollow valve rod and the lower filling groove (16) in a sealing way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689909.0U CN210034454U (en) | 2019-05-15 | 2019-05-15 | Soft sealing type flue gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689909.0U CN210034454U (en) | 2019-05-15 | 2019-05-15 | Soft sealing type flue gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034454U true CN210034454U (en) | 2020-02-07 |
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ID=69365478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920689909.0U Active CN210034454U (en) | 2019-05-15 | 2019-05-15 | Soft sealing type flue gas valve |
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| Country | Link |
|---|---|
| CN (1) | CN210034454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879572A (en) * | 2021-01-28 | 2021-06-01 | 浙江中信阀门有限公司 | Compact upper assembling type detachable online maintenance ultralow-temperature butterfly valve |
-
2019
- 2019-05-15 CN CN201920689909.0U patent/CN210034454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879572A (en) * | 2021-01-28 | 2021-06-01 | 浙江中信阀门有限公司 | Compact upper assembling type detachable online maintenance ultralow-temperature butterfly valve |
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