CN210397743U

CN210397743U - Soft-sealing double-eccentric flange butterfly valve capable of reducing friction of sealing ring

Info

Publication number: CN210397743U
Application number: CN201920930790.1U
Authority: CN
Inventors: 韩璐璐
Original assignee: Tianjin Haixilong Valve Manufacturing Co ltd
Current assignee: Tianjin Haixilong Valve Manufacturing Co ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-04-24
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a reduce soft sealed double eccentric flange butterfly valve of sealing washer friction formula, including valve body and valve gap, the top fixedly connected with connecting piece of valve body, the top of connecting piece and the bottom fixed connection of valve gap, the utility model relates to a butterfly valve technical field. This reduce two eccentric flange butterfly valves of soft seal of sealing washer friction formula, cooperation through sealing strip and second dead slot, the wearing and tearing that the seal cover surface received have been reduced when guaranteeing to seal, turn into the wearing and tearing of sealing strip with wearing and tearing, the life of seal cover has been increased, and the seal cover drives the slight rotation of upper shaft cover when rotating, the friction between seal cover and the upper shaft cover has effectively been reduced, the loss of seal cover has been reduced, and the upper shaft cover material hardness is stronger, have very strong wearability, it all can lead to water to leak from the valve cover because of the wearing and tearing of the inside sealing washer of upper shaft cover to have solved most two eccentric butterfly valves, often need change, the not long problem of life.

Description

Soft-sealing double-eccentric flange butterfly valve capable of reducing friction of sealing ring

Technical Field

The utility model relates to a butterfly valve technical field specifically is a soft seal double eccentric flange butterfly valve of reduction sealing washer friction formula.

Background

The double eccentric butterfly valve is also called as a high-performance butterfly valve, is mainly suitable for water discharge of systems of water plants, power plants, steel works smelting, chemical engineering, water source spring engineering, environmental facility construction and the like, is particularly suitable for water pipelines and is used as adjusting and intercepting equipment, compared with the traditional butterfly valve, the double eccentric butterfly valve has higher pressure resistance, longer service life and good stability, compared with other valves, the material is lighter when the caliber is larger, the cost is lower, the double eccentric butterfly valve is further improved on the basis of a single eccentric butterfly valve, and the structure is characterized in that the axis of a valve rod deviates from the center of a butterfly plate and also deviates from the center of a body, the double eccentric effect ensures that the butterfly plate can be quickly separated from a valve seat after the valve is opened, unnecessary excessive extrusion and scraping phenomena of the butterfly plate and the valve seat are eliminated, the opening resistance distance is reduced, the abrasion is reduced, the service life of the valve seat is prolonged, the scraping phenomenon is greatly reduced, and the double eccentric, The application of the butterfly valve in the high-temperature field is improved.

The double-eccentric butterfly valve needs to rotate frequently to adjust water flow in use, the inner part of the double-eccentric butterfly valve is easy to wear in rotation, the water flow in the double-eccentric butterfly valve often impacts the valve cover upwards, most of the double-eccentric butterfly valves are used for a period of time, water leaks from the valve cover due to the abrasion of the sealing ring in the upper shaft sleeve, the double-eccentric butterfly valves need to be replaced frequently, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a reduce two eccentric flange butterfly valves of soft seal of sealing washer friction formula has solved current two eccentric butterfly valves and is using a period, and most two eccentric butterfly valves all can lead to water to leak from the valve closure because of the wearing and tearing of the inside sealing washer of upper shaft sleeve, need change often, the not long problem of life.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a soft-sealing double-eccentric flange butterfly valve capable of reducing sealing ring friction comprises a valve body and a valve cover, wherein a connecting piece is fixedly connected to the top of the valve body, the top of the connecting piece is fixedly connected with the bottom of the valve cover, a through groove is formed in the inner cavity of the valve body, an upper shaft sleeve is rotatably connected to the inner cavity of the valve body, a convex strip is fixedly connected to the surface of the upper shaft sleeve, a first empty groove matched with the surface of the convex strip is formed in the inner cavity of the valve body, a sealing sleeve is rotatably connected to the inner cavity of the upper shaft sleeve, a sealing strip is fixedly connected to the surface of the sealing sleeve, a second empty groove matched with the surface of the sealing sleeve is formed in the inner cavity of the upper shaft sleeve, an upper valve rod is rotatably connected to the inner surface of the valve body, the bottom end of the upper valve rod sequentially penetrates through the, and the surface of the upper valve stem, which is positioned in the inner cavity of the valve body, is sleeved with a filling sleeve.

Preferably, the inner surface of the through groove is movably connected with a disc, and the bottom end of the upper valve rod penetrates through the top of the disc and extends to the inner cavity of the disc.

Preferably, the surface of the upper valve rod is fixedly connected with the surface of the disc, the inner surface of the through groove is fixedly connected with a sealing ring, and the inner surface of the sealing ring is abutted against the surface of the disc.

Preferably, the caliber of the disk is gradually increased from two sides to the middle, and an elastic gasket is fixedly connected to the surface of the disk.

Preferably, the bottom fixedly connected with lower valve rod of dish, the bottom of lower valve rod runs through the surface of valve body and extends to the inner chamber of valve body, the surface of lower valve rod is connected with the inner chamber rotation of valve body.

Preferably, the surface of the lower valve rod, which is positioned in the inner cavity of the valve body, is sleeved with a lower shaft sleeve.

Advantageous effects

The utility model provides a reduce soft sealed double-eccentric flange butterfly valve of sealing washer friction formula. Compared with the prior art, the method has the following beneficial effects:

(1) the soft sealing double-eccentric flange butterfly valve with the function of reducing the friction of the sealing ring is characterized in that a connecting piece is fixedly connected to the top of a valve body, the top of the connecting piece is fixedly connected with the bottom of a valve cover, a through groove is formed in an inner cavity of the valve body, an upper shaft sleeve is rotatably connected to the inner cavity of the valve body, a convex strip is fixedly connected to the surface of the upper shaft sleeve, a first empty groove matched with the surface of the convex strip is formed in the inner cavity of the valve body, a sealing sleeve is rotatably connected to the inner cavity of the upper shaft sleeve, a sealing strip is fixedly connected to the surface of the sealing sleeve, a second empty groove matched with the surface of the sealing sleeve is formed in the inner cavity of the upper shaft sleeve, an upper valve rod is rotatably connected to the inner surface of the valve body, the bottom end of the upper valve rod sequentially penetrates through the sealing sleeve and, through the cooperation of sealing strip and second dead slot, the wearing and tearing that the seal cover surface received have been reduced when guaranteeing sealed, turn into the wearing and tearing of sealing strip with wearing and tearing, greatly increased the life of seal cover, and the seal cover drives the slight rotation of upper shaft cover when rotating, effectively reduced the friction between seal cover and the upper shaft cover, the loss of seal cover has been reduced, and upper shaft cover material hardness degree is stronger, has very strong wearability, it is using a period to have solved current double eccentric butterfly valve, most double eccentric butterfly valve all can lead to water to leak from the valve cover because of the wearing and tearing of the inside sealing washer of upper shaft cover, often need change, the not long problem of life.

(2) This reduce soft sealed double eccentric flange butterfly valve of sealing washer friction formula, through the bore at the dish from both sides to middle crescent, and the fixed surface of dish is connected with elastic gasket, set up the surface of dish into the arc that reduces gradually from both sides to middle bore, when the dish rotates, contact through cambered surface and valve body inner chamber, resistance when can reducing the rotation, and the cooperation through elastic gasket has strengthened the leakproofness, the life of dish has been increased.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic perspective view of the sealing sleeve structure of the present invention;

fig. 4 is a side view of the disk structure of the present invention.

In the figure: 1-valve body, 2-valve cover, 3-connecting piece, 4-through groove, 5-upper shaft sleeve, 6-convex strip, 7-first empty groove, 8-sealing sleeve, 9-sealing strip, 10-second empty groove, 11-upper valve rod, 12-filling sleeve, 13-disc, 14-sealing ring, 15-elastic washer, 16-lower valve rod and 17-lower shaft sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a soft sealing double eccentric flange butterfly valve of a type of reducing seal ring friction comprises a valve body 1 and a valve cover 2, a connecting piece 3 is fixedly connected to the top of the valve body 1, the top of the connecting piece 3 is fixedly connected with the bottom of the valve cover 2, a through groove 4 is formed in the inner cavity of the valve body 1, a disc 13 is movably connected to the inner surface of the through groove 4, a lower valve rod 16 is fixedly connected to the bottom of the disc 13, a lower shaft sleeve 17 is sleeved on the surface of the lower valve rod 16, which is positioned in the inner cavity of the valve body 1, the rotating resistance is reduced through the lower shaft sleeve 17, the bottom end of the lower valve rod 16 penetrates through the surface of the valve body 1 and extends to the inner cavity of the valve body 1, the surface of the lower valve rod 16 is rotatably connected with the inner cavity of the valve body 1, the caliber of the disc 13 is gradually increased from two sides to the middle, when the disc 13 rotates, the arc surface contacts with the inner cavity of the valve body 1, the resistance during rotation can be reduced, the sealing performance is enhanced through the matching of the elastic washer 15, the service life of the disc 13 is prolonged, the bottom end of the upper valve rod 11 penetrates through the top of the disc 13 and extends to the inner cavity of the disc 13, the inner cavity of the valve body 1 is rotatably connected with the upper shaft sleeve 5, the surface of the upper shaft sleeve 5 is fixedly connected with the convex strip 6, the inner cavity of the valve body 1 is provided with a first hollow groove 7 matched with the surface of the convex strip 6, the upper shaft sleeve 5 is subjected to power-assisted sliding through the convex strip 6, the inner cavity of the upper shaft sleeve 5 is rotatably connected with the sealing sleeve 8, the surface of the sealing sleeve 8 is fixedly connected with the sealing strip 9, the sealing sleeve 9 is made of a material with higher hardness and has good wear resistance, the inner cavity of the upper shaft sleeve 5 is provided with a second hollow groove 10 matched, the surface of the upper valve rod 11 is fixedly connected with the surface of the disc 13, the inner surface of the through groove 4 is fixedly connected with a sealing ring 14, the inner surface of the sealing ring 14 is abutted against the surface of the disc 13, the bottom end of the upper valve rod 11 sequentially penetrates through the sealing sleeve 8 and the valve body 1 from bottom to top and extends to the inner cavity of the valve body 1, the surface of the upper valve rod 11 is fixedly connected with the inner cavity of the sealing sleeve 8, the surface of the upper valve rod 11, which is positioned in the inner cavity of the valve body 1, is sleeved with a filling sleeve 12, through the matching of the sealing strip 9 and the second hollow groove 10, the abrasion on the surface of the sealing sleeve 8 is reduced while the sealing is ensured, the abrasion is converted into the abrasion of the sealing strip 9, the service life of the sealing sleeve 8 is greatly prolonged, the sealing sleeve 8 drives the upper sleeve 5 to slightly rotate when rotating, the friction between the sealing sleeve 8 and the upper, the double-eccentric butterfly valve has strong wear resistance, and solves the problems that most of double-eccentric butterfly valves are frequently replaced and have short service life because water leaks from the valve cover 2 due to the abrasion of the sealing ring inside the upper shaft sleeve 5 when the existing double-eccentric butterfly valve is used for a period of time.

During operation, the rotary table is rotated to drive the upper valve rod 11 to rotate, the upper valve rod 11 drives the disc 13 to rotate, the disc 13 drives the lower shaft sleeve 17 to rotate, adjustment is performed, the upper valve rod 11 rotates and simultaneously drives the sealing sleeve 8 to rotate, the sealing strip 9 on the sealing sleeve 8 slides in the first empty groove 7 in the upper shaft sleeve 5 to drive the upper shaft sleeve 5 to rotate, and assistance is performed through the convex strip 6.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a reduce two eccentric flange butterfly valves of soft seal of sealing washer friction formula, includes valve body (1) and valve gap (2), the top fixedly connected with connecting piece (3) of valve body (1) to the bottom fixed connection of the top of connecting piece (3) and valve gap (2), its characterized in that: the inner cavity of the valve body (1) is provided with a through groove (4), the inner cavity of the valve body (1) is rotatably connected with an upper shaft sleeve (5), a convex strip (6) is fixedly connected to the surface of the upper shaft sleeve (5), a first empty groove (7) matched with the surface of the convex strip (6) is formed in the inner cavity of the valve body (1), a sealing sleeve (8) is rotatably connected to the inner cavity of the upper shaft sleeve (5), a sealing strip (9) is fixedly connected to the surface of the sealing sleeve (8), a second empty groove (10) matched with the surface of the sealing sleeve (8) is formed in the inner cavity of the upper shaft sleeve (5), an upper valve rod (11) is rotatably connected to the inner surface of the valve body (1), the bottom end of the upper valve rod (11) sequentially penetrates through the sealing sleeve (8) and the valve body (1) from bottom to top and extends to the inner cavity of the valve body (1), and the surface of the, the surface of the upper valve rod (11) in the inner cavity of the valve body (1) is sleeved with a filling sleeve (12).

2. The soft seal double eccentric flange butterfly valve of claim 1 of the type that reduces seal ring friction, wherein: the internal surface swing joint of logical groove (4) has dish (13), the bottom of going up valve rod (11) runs through the top of dish (13) and extends to the inner chamber of dish (13).

3. The soft seal double eccentric flange butterfly valve of claim 2, of the type that reduces seal ring friction, wherein: go up the fixed surface of valve rod (11) and the fixed surface of dish (13) is connected, the internal surface fixed connection who leads to groove (4) has sealing washer (14), the internal surface of sealing washer (14) contradicts each other with the surface of dish (13).

4. The soft seal double eccentric flange butterfly valve of claim 2, of the type that reduces seal ring friction, wherein: the caliber of the disc (13) is gradually increased from two sides to the middle, and an elastic gasket (15) is fixedly connected to the surface of the disc (13).

5. The soft seal double eccentric flange butterfly valve of claim 2, of the type that reduces seal ring friction, wherein: the bottom fixedly connected with of dish (13) lower valve rod (16), the bottom of lower valve rod (16) runs through the surface of valve body (1) and extends to the inner chamber of valve body (1), the surface of lower valve rod (16) is connected with the inner chamber rotation of valve body (1).

6. The soft-sealing double-eccentric flange butterfly valve of claim 5, of the type that reduces seal ring friction, wherein: the surface of the lower valve rod (16) in the inner cavity of the valve body (1) is sleeved with a lower shaft sleeve (17).