CN211779067U

CN211779067U - Instrument valve with good sealing performance

Info

Publication number: CN211779067U
Application number: CN202020349030.4U
Authority: CN
Inventors: 周德勇
Original assignee: Suzhou Industrial Park Ofit Gas Equipment Co ltd
Current assignee: Suzhou Industrial Park Ofit Gas Equipment Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-10-27
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a sealing performance is good instrument valve, including hand wheel, valve gap, disk seat, valve body, valve rod, sealing washer, case, first packing ring, second packing ring and flashboard, the hand wheel is located whole device top, the hand wheel lower extreme is connected with the bolt, the hand wheel pass through bolted connection in the valve gap, the valve gap inboard is equipped with the valve rod, the valve rod outside is equipped with first packing ring, be equipped with between valve gap and the valve rod the sealing washer, be equipped with between case and the flashboard the second packing ring, the flashboard is located the valve body is inboard, be equipped with in the middle of the valve body the disk seat. The utility model discloses the device is through having set up the leakproofness that the sealing washer guaranteed whole device between valve gap and valve rod, and the possibility of leaking in preventing to appear is equipped with the second packing ring on the flashboard, and what the second packing ring used is materials such as soft seal (asbestos cord), guarantees that the device has good leakproofness, is difficult for producing and leaks to fine improvement the life of valve.

Description

Instrument valve with good sealing performance

Technical Field

The utility model relates to an instrument valve technical field particularly, relates to an instrument valve that sealing performance is good.

Background

The instrument valve is a kind of pipe fitting. It is a device for changing the cross section of the channel and the flowing direction of the medium and controlling the flowing of the conveying medium. The sealing performance of the instrument valve refers to the capability of each sealing part of the instrument valve for preventing medium leakage, and is the most important technical performance index of the instrument valve, and the sealing parts of the instrument valve have three parts: the contact part between the opening and closing piece and the two sealing surfaces of the valve seat; matching and combining the packing with the valve rod and the packing box; the valve body is connected with the valve cover. The former leakage is called internal leakage, which is known as untight closure and affects the ability of the meter valve to shut off the medium, and is not allowed for shut-off valves. The latter two leaks are called external leaks, i.e. leakage of medium from the inside of the valve to the outside of the valve. The leakage can cause material loss and environmental pollution, and can also cause accidents in serious cases, and the leakage is not allowable for inflammable and explosive, toxic or radioactive media, so that the instrument valve has reliable sealing performance.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a good instrument valve of sealing performance to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a good instrument valve of sealing performance, includes hand wheel, valve gap, disk seat, valve body, valve rod, sealing washer, case, first packing ring, second packing ring and flashboard, the hand wheel is located whole device top, the hand wheel lower extreme is connected with the bolt, the hand wheel pass through bolted connection in the valve gap, the valve gap inboard is equipped with the valve rod, the valve rod outside is equipped with first packing ring, be equipped with between valve gap and the valve rod the sealing washer, the sealing washer outside is equipped with the filler, be equipped with the post nut in the middle of the valve rod, valve rod one side is equipped with the case, the case both sides all are equipped with the flashboard, be equipped with between case and the flashboard the second packing ring, the flashboard is located the valve body is inboard.

Furthermore, the hand wheel is fixedly connected with the bolt, and the hand wheel is connected to the valve cover through the bolt and the thread.

Furthermore, the sealing ring is made of graphite flexible materials.

Furthermore, the first gasket is made of a hard sealing plastic nylon high polymer material.

Furthermore, the second gasket is made of soft sealing asbestos ropes and the like.

Furthermore, a locking nut is arranged on the inner side of the valve cover, and the valve rod is movably connected with the valve cover through the locking nut.

Further, a valve cover pressing plate is arranged on the inner side of the valve cover and fixedly connected into the valve cover.

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

(1) the utility model relates to a good instrument valve of sealing performance, this device guarantees the leakproofness of whole device through having set up the sealing washer between valve gap and valve rod, the possibility of interior hourglass prevents to appear, adopt sealed material all around in the middle of the valve gap, wear and tear so as to avoid often rotating, cause the outside seepage of inside water, what general case used is hard seal (plastics nylon polymer material), the stop valve of ordinary cast iron, be equipped with the second packing ring on the flashboard, what the second packing ring used is materials such as soft seal (asbestos cord), guarantee that the device has good leakproofness, be difficult for producing the leakage, thereby fine improvement the life of valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an instrument valve with good sealing performance according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the inside of an instrument valve with good sealing performance according to an embodiment of the present invention.

Reference numerals:

1. a hand wheel; 2. a bolt; 3. a valve cover; 4. a connecting member; 5. a valve seat; 6. a valve body; 7. locking the nut; 8. a valve stem; 9. a post nut; 10. a seal ring; 11. a filler; 12. a valve core; 13. a first gasket; 14. a valve cover pressing plate; 15. a second gasket; 16. a gate plate.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-2, an instrument valve with good sealing performance according to an embodiment of the present invention includes a hand wheel 1, a valve cover 3, a valve seat 5, a valve body 6, a valve rod 8, a sealing ring 10, a valve plug 12, a first gasket 13, a second gasket 15, and a shutter 16, wherein the hand wheel 1 is located at the top end of the whole device, the lower end of the hand wheel 1 is connected with a bolt 2, the hand wheel 1 is connected to the valve cover 3 through the bolt 2, the valve rod 8 is disposed at the inner side of the valve cover 3, the first gasket 13 is disposed at the outer side of the valve rod 8, the sealing ring 10 is disposed between the valve cover 3 and the valve rod 8, a filler 11 is disposed at the outer side of the sealing ring 10, a column nut 9 is disposed in the middle of the valve rod 8, the valve plug 12 is disposed at one side of the valve rod 8, the, the flashboard 16 is arranged on the inner side of the valve body 6, and the valve seat 5 is arranged in the middle of the valve body 6.

Through the above technical scheme of the utility model,

hand wheel

1 and 2 fixed connection of bolt, hand wheel 1 passes through 2 threaded connection of bolt in valve gap 3, the sealing washer 10 uses is the flexible material of graphite, and the main effect of sealing washer 10 is the leakproofness of guaranteeing the device, prevents the possibility of interior hourglass, the first packing ring 13 uses is hard sealed plastics nylon polymer material, the second packing ring 15 uses materials such as soft sealed asbestos rope, 3 inboards of valve gap are equipped with lock nut 7, valve rod 8 passes through

lock nut

7 and 3 swing joint of valve gap, 3 inboards of valve gap are equipped with valve gap clamp plate 14, and valve gap clamp plate 14's main effect is used for connecting the valve body or supports actuating mechanism, 14 fixed connection of valve gap clamp plate is in valve gap 3.

When specifically using, the utility model relates to a good instrument valve of sealing performance, this device is through having set up sealing washer 10 between valve gap 3 and valve rod 8 and guarantee the leakproofness of whole device, the possibility of interior hourglass prevents to appear, valve gap 3 middle adoption is sealed material all around, in order to avoid frequent rotation wearing and tearing, cause the outside seepage of inside water, what general case 12 used is hard seal (plastics nylon polymer material), the stop valve of ordinary cast iron, be equipped with second packing ring 15 on the flashboard, what second packing ring 15 used is materials such as soft seal (asbestos cord), guarantee that the device has good leakproofness, be difficult for producing the leakage, thereby fine improvement the life of valve.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The instrument valve with good sealing performance is characterized by comprising a hand wheel (1), a valve cover (3), a valve seat (5), a valve body (6), a valve rod (8), a sealing ring (10), a valve core (12), a first gasket (13), a second gasket (15) and a flashboard (16), wherein the hand wheel (1) is positioned at the top end of the whole device, the lower end of the hand wheel (1) is connected with a bolt (2), the hand wheel (1) is connected to the valve cover (3) through the bolt (2), the valve rod (8) is arranged on the inner side of the valve cover (3), the first gasket (13) is arranged on the outer side of the valve rod (8), the sealing ring (10) is arranged between the valve cover (3) and the valve rod (8), a filler (11) is arranged on the outer side of the sealing ring (10), a column nut (9) is arranged in the middle of the valve rod (, the valve is characterized in that the flashboards (16) are arranged on two sides of the valve core (12), the second gasket (15) is arranged between the valve core (12) and the flashboards (16), the flashboards (16) are arranged on the inner side of the valve body (6), and the valve seat (5) is arranged in the middle of the valve body (6).

2. The instrument valve with good sealing performance according to claim 1, wherein the hand wheel (1) is fixedly connected with the bolt (2), and the hand wheel (1) is in threaded connection with the valve cover (3) through the bolt (2).

3. The good-sealing instrument valve is characterized in that the sealing ring (10) is made of graphite flexible material according to claim 1.

4. The good-sealing instrument valve is characterized in that the first gasket (13) is made of a hard sealing plastic nylon high polymer material.

5. The good-sealing instrument valve is characterized in that the second gasket (15) is made of soft sealing asbestos ropes and the like.

6. The instrument valve with good sealing performance according to claim 1, wherein a locking nut (7) is arranged on the inner side of the valve cover (3), and the valve rod (8) is movably connected with the valve cover (3) through the locking nut (7).

7. The instrument valve with good sealing performance according to claim 1, characterized in that a valve cover pressing plate (14) is arranged on the inner side of the valve cover (3), and the valve cover pressing plate (14) is fixedly connected in the valve cover (3).