CN203176414U - Metallic seal eccentric valve structure for pipeline - Google Patents
Metallic seal eccentric valve structure for pipeline Download PDFInfo
- Publication number
- CN203176414U CN203176414U CN 201320126402 CN201320126402U CN203176414U CN 203176414 U CN203176414 U CN 203176414U CN 201320126402 CN201320126402 CN 201320126402 CN 201320126402 U CN201320126402 U CN 201320126402U CN 203176414 U CN203176414 U CN 203176414U
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- valve
- sealing
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- valve ball
- ball
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Abstract
The utility model discloses a metallic seal eccentric valve structure for a pipeline. The metallic seal eccentric valve structure comprises a valve body, a valve seat, a valve ball and a valve rod. The valve seat is fixedly connected in the valve body and is provided with an inclined sealing face. The valve rod extends into the valve body and is fixedly connected with the valve ball located in the valve body. The valve ball is provided with an axial face on which a sealing pair is arranged. The sealing pair comprises a sealing piece and a fixing ring. The sealing piece is fixedly connected with the axial face through the fixing ring and is provided with a taper face matched with the inclined sealing face. The inclined sealing face and the taper face are both curved surfaces with oval sections. A supporting plate is arranged at the bottom of the valve ball, supports the valve ball and ensures that the rotating center of the valve ball and the central line of a runner of the valve body form a radial height difference. When the axial face of the valve body abuts against the inclined sealing face, the axis of the taper face and the central line of the runner of the valve body form a fixed angle. The eccentric valve structure has the advantages of being small in torque, good in sealing performance, high-temperature resistant, easy to manufacture, convenient to maintain, long in service life, and the like.
Description
Technical field
The utility model relates to a kind of eccentric valve structure, and is concrete relevant with a kind of metal seal eccentric valve arrangement for pipeline.
Background technique
At present, the ball valve of widespread usage on the market, what adopt is piston cylinder operator, mainly there is following defective in this piston cylinder operator: the Sealing between (1) valve seat and the valve body mainly adopts non-metal components such as O shape circle, Expanded graphite, because the required pretension specific pressure of Expanded graphite height, and installation, fragile when using are so difficulty is set up the piston seal chamber, so easily cause valve to be revealed, open and close torque is bigger simultaneously; And O type circle can not be used for worst hot case, so use occasion is restricted; (2) under the effect of medium power and spring force, its sealing surface of seat is near the ball seal face, and valve is when opening and closing, and its sealing surface is in Frotteurism all the time, so its sealing surface is easy to wear, seriously shortens the working life of valve; (3) requirement on machining accuracy is high, inconvenient maintenance, and leaking appears in ball valve wearing and tearing back, must change whole valve ball, valve seat, so its maintenance cost height.
The model utility content
The purpose of this utility model is to solve prior art problems, utilizes existing valve ball, and it is improved, provide that a kind of moment of torsion is little, good seal performance, high temperature resistant, easy manufacturing, just safeguard, the metal seal eccentric valve arrangement of long service life.
For reaching above-mentioned purpose, the utility model adopts following technological scheme:
The metal seal eccentric valve arrangement that a kind of pipeline is used, it comprises valve body 1, valve seat 2, valve ball 3, reaches valve rod 4, and in the affixed valve seat 2 of the runner inner wall of valve body 1,2 are provided with sealing inclined-plane 21 on this valve seat; Described valve rod 4 stretches into valve body 1 and is positioned at its inner valve ball 3 affixed; Described valve ball 3 has axial vane surface 31, and axial vane surface 31 is provided with a sealing pair 32, and it comprises a Sealing 33 and a retaining ring 34, and wherein, described Sealing 33 is fixed in axial vane surface 31 by retaining ring 34, and corresponding described sealing inclined-plane 21; Described valve ball 3 rotating centers and valve body 1 runner center line on same straight line: 33 are provided with and seal the conical surface 22 that matches on inclined-plane 21 and the two all is that sectional shape is oval-shaped curved surface on the described Sealing; Described valve ball 3 bottoms are provided with a dunnage 5, it supports valve ball 3 and guarantees valve ball 3 rotating centers and valve body 1 runner center line forms a radial height and differs from 6, during described valve ball axial vane surface 31 contact valve base sealing inclined-planes 21, the axis of the conical surface 22 and valve body 1 runner center line form a tilt fixing 7; Described Sealing 33 is the abrasion resistance alloy Sealing.
Further, described sealing pair 32 also comprises a pad 8 and trim ring 9, and described valve ball axial vane surface 31 is provided with groove, and described pad 8 places groove; Described Sealing 33 places between pad 8 and the trim ring 9, and by the screw 10 on the ring 34 that is locked sealing pair is fixed in valve ball axial vane surface 31.
Technological scheme described in the utility model has the following advantages with respect to prior art:
The radial height that adopts valve ball rotating center described in the utility model and valve flowing channel center line to form is poor, when valve opening, the valve ball sealing surface can hightail the valve base sealing inclined-plane, there is not friction when making valve switch between two sealing surfaces, effectively reduce the open and close torque of valve, prolong the working life of valve, and stuck phenomenon can not occur, improved the performance of valve seal; The utility model adopts the sealing pair structure, is convenient to change its inner body, easily makes, just keeps in repair.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes a part of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not constitute improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the generalized section of the utility model valve body structure;
Fig. 2 is A place enlarged view schematic representation among Fig. 1;
Fig. 3 is axis structure schematic representation one of the present utility model;
Fig. 4 is axis structure schematic representation two of the present utility model;
Fig. 5 is the utility model valve ball work schematic representation.
Description of reference numerals:
Valve body 1, valve seat 2, valve ball 3, valve rod 4, dunnage 5, radial height differ from 6, fixing angle 7, pad 8, trim ring 9, screw 10, sealing inclined-plane 21, the conical surface 22, axial vane surface 31, Sealing 33, retaining ring 34.
Embodiment
In order to make technical problem to be solved in the utility model, technological scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Shown in Fig. 1-2, the metal seal eccentric valve arrangement that a kind of pipeline is used, it comprises valve body 1, valve seat 2, valve ball 3, reaches valve rod 4, and described valve seat 2 is fixed in the runner inner wall of valve body 1 by welding or expanded joint mode, and guarantees that medium can be along valve seat 2 cylindrical seepages; This valve seat 2 is provided with sealing inclined-plane 21, and it adopts abrasion resistance alloy to make; Described valve rod 4 stretches into valve body 1 and adopts flat groove Placement and be positioned at its inner valve ball 3 affixed; Valve ball 3 has axial vane surface 31, be provided with a sealing pair 32 at axial vane surface 31, sealing pair 32 comprises a pad 8, trim ring 9, Sealing 33 and retaining ring 34, described Sealing 33 is the abrasion resistance alloy Sealing, wherein, offers the groove of placing for pad 8 in valve ball axial vane surface 31, utilize pad 8 to increase sealing reliability, described Sealing 33 places between pad 8 and the trim ring 9, and by the screw 10 on the ring 34 that is locked sealing pair is fixed in valve ball axial vane surface 31, makes it into as a whole.
As Fig. 1, Fig. 3, shown in Figure 4,33 are provided with and seal the conical surface 22 that matches on inclined-plane 21 and the two all is that sectional shape is oval-shaped curved surface on the described Sealing; Be provided with a dunnage 5 in valve ball 3 bottoms, valve ball 3 is by each one up and down of dunnage 5() support, and guarantee that valve ball 3 rotating centers and valve body 1 runner center line form a radial height and differ from 6, during described valve ball axial vane surface 31 contact valve base sealing inclined-planes 21, the axis of the conical surface 22 and valve body 1 runner center line form a tilt fixing 7.
In actual the use, as shown in Figure 3, the described conical surface 22 is to get around an apex angle ss and through its center line rotary cutting, and its sectional shape is oval.In like manner, the sealing surface of seat 21 of pairing also is that center line around apex angle ss gets through rotary cutting with it.
As shown in Figure 3, Figure 4, when valve is in closed condition, valve ball 3 rotating centers and valve body 1 rotating center exist radial height differ from 6 and oblique 21 22 of sealing surface overlap, this moment, pivoted arm L1 was greater than pivoted arm L2, pivoted arm L3 shows greater than pivoted arm L4(such as Fig. 4), therefore when rotating counterclockwise valve ball, namely during valve opening, the conical surface 22 of Sealing 33 will hightail valve base sealing inclined-plane 21, prevent sealing pair 32 and the conical surface 22 and the phase mutual friction (as shown in Figure 5) that seals between the inclined-plane 21.When clockwise rotating valve ball 3, namely during throttle down, the conical surface 22 will be close to valve base sealing inclined-plane 21 gradually, keep sealing until valve, this moment, Sealing 33 also had enough pretension surpluses, so when wearing and tearing appear in Sealing 33, only need that valve ball 3 is rotated further several angle and can guarantee valve body 1 sealing.
The radial height that adopts valve ball rotating center described in the utility model and valve flowing channel center line to form is poor, when valve opening, the valve ball sealing surface can hightail the valve base sealing inclined-plane, there is not friction when making valve switch between two sealing surfaces, effectively reduce the open and close torque of valve, prolong the working life of valve, and stuck phenomenon can not occur, improved the performance of valve seal; The utility model adopts the sealing pair structure, is convenient to change its inner body, easily makes, just keeps in repair.
Above-mentioned explanation illustrates and has described preferred embodiment of the present utility model, as previously mentioned, be to be understood that the utility model is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiments as, and can be used for various other combinations, modification and environment, and can in model utility contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from spirit and scope of the present utility model, then all should be in the protection domain of the utility model claims.
Claims (2)
1. metal seal eccentric valve arrangement that pipeline is used, it comprises valve body (1), valve seat (2), valve ball (3), and valve rod (4), in the affixed valve seat of runner inner wall (2) of valve body (1), this valve seat (2) is provided with sealing inclined-plane (21); Described valve rod (4) stretches into valve body (1) and is positioned at its inner valve ball (3) affixed; Described valve ball (3) has axial vane surface (31), axial vane surface (31) is provided with a sealing pair (32), it comprises a Sealing (33) and a retaining ring (34), wherein, described Sealing (33) is fixed in axial vane surface (31) by retaining ring (34), and corresponding described sealing inclined-plane (21); Described valve ball (3) rotating center and valve body (1) runner center line is characterized in that on same straight line: (33) are provided with and seal the conical surface (22) that matches on inclined-plane (21) and the two all is that sectional shape is oval-shaped curved surface on the described Sealing; Described valve ball (3) is provided with a dunnage (5) in the bottom, it supports valve ball (3) and guarantees valve ball (3) rotating center and valve body (1) runner center line forms a radial height poor (6), during described valve ball axial vane surface (31) contact valve base sealing inclined-plane (21), the axis of the conical surface (22) and valve body (1) runner center line form a tilt fixing (7); Described Sealing (33) is the abrasion resistance alloy Sealing.
2. the metal seal eccentric valve arrangement used of a kind of pipeline as claimed in claim 1, it is characterized in that: described sealing pair (32) also comprises a pad (8) and trim ring (9), and described valve ball axial vane surface (31) is provided with groove, and described pad (8) places groove; Described Sealing (33) places between pad (8) and the trim ring (9), and by the screw (10) on the ring (34) that is locked sealing pair is fixed in valve ball axial vane surface (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126402 CN203176414U (en) | 2013-03-19 | 2013-03-19 | Metallic seal eccentric valve structure for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126402 CN203176414U (en) | 2013-03-19 | 2013-03-19 | Metallic seal eccentric valve structure for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176414U true CN203176414U (en) | 2013-09-04 |
Family
ID=49073111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320126402 Expired - Fee Related CN203176414U (en) | 2013-03-19 | 2013-03-19 | Metallic seal eccentric valve structure for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822783A (en) * | 2015-01-05 | 2016-08-03 | 上海美科阀门有限公司 | Dual-center eccentric ball valve |
| CN114198524A (en) * | 2021-12-07 | 2022-03-18 | 宣达实业集团有限公司 | Adjustable eccentric friction-free hard sealing ball valve |
-
2013
- 2013-03-19 CN CN 201320126402 patent/CN203176414U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822783A (en) * | 2015-01-05 | 2016-08-03 | 上海美科阀门有限公司 | Dual-center eccentric ball valve |
| CN114198524A (en) * | 2021-12-07 | 2022-03-18 | 宣达实业集团有限公司 | Adjustable eccentric friction-free hard sealing ball valve |
| CN114198524B (en) * | 2021-12-07 | 2023-10-20 | 宣达实业集团有限公司 | Adjustable eccentric friction-free hard sealing ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20160319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |