CN201836422U - Prop open type sealed flat gate valve - Google Patents
Prop open type sealed flat gate valve Download PDFInfo
- Publication number
- CN201836422U CN201836422U CN201020226972XU CN201020226972U CN201836422U CN 201836422 U CN201836422 U CN 201836422U CN 201020226972X U CN201020226972X U CN 201020226972XU CN 201020226972 U CN201020226972 U CN 201020226972U CN 201836422 U CN201836422 U CN 201836422U
- Authority
- CN
- China
- Prior art keywords
- flashboard
- valve
- bucket
- shape groove
- gate valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sliding Valves (AREA)
Abstract
The utility model discloses a prop open type sealed flat gate valve which comprises a valve body (1), a valve stem (9) and a gate plate component. A gate valve passage is arranged between an inlet and an outlet and inside the valve body (1); and the gate plate component is arranged inside the gate valve passage and comprises a left gate plate (21), a right gate plate (22), a guide body (5) connected with the valve stem (9) and an ejecting core (3) arranged on the guide body (5), wherein the upper end and the lower end of the left gate plate (21) and those of the right gate plate (22) are respectively connected through connecting pieces (6), a bucket-shaped through groove (4) is formed between the left gate plate (21) and the right gate plate (22), the guide body (5) is extended into the bucket-shaped through groove (4) and clamped inside the bucket-shaped through groove (4), and the ejector core (3) adopts a spherical shape or an ellipsoidal shape and is smaller than the upper end of the bucket-shaped through groove (4) and larger than the lower end of the bucket-shaped through groove (4). The prop open type sealed flat gate valve has the advantages of small wear between sealing surfaces, reliable sealing performance, and long service life.
Description
Technical field
The utility model relates to the gate valve field, particularly relates to a kind of improvement of plate valve.
Background technique
Plate valve has obtained using widely at various industrial fields such as water, oil, rock gases owing to simple in structure at present.Problems such as the structure of classic flat-plate gate valve is to strut with spring in the middle of the double-flashboard, therefore has serious friction between the sealing surface of the sealing surface of flashboard and valve body in the opening-closing process of gate valve, causes sealing surface wear fast, and valve working life is low.
The model utility content
The purpose of this utility model provides that a kind of sealing surface wear is little, sealability is reliable, the bracing type seal plate gate valve of long service life.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of bracing type seal plate gate valve, comprise valve body, valve rod and the flashboard assembly that links to each other with valve rod, described valve inner is provided with the gate valve passage between importing and exporting, described flashboard assembly is located in the gate valve passage, described flashboard assembly comprises left flashboard, right flashboard, guide way that links to each other with valve rod and the plunger tip of being located on the guide way, the two ends up and down of described left flashboard and right flashboard flexibly connect by link respectively, form the bucket shape groove between described left flashboard and the right flashboard, described guide way stretches into the bucket shape groove and is arranged in the bucket shape groove, described plunger tip is spherical or the ellipsoid shape, and described plunger tip is littler and bigger than the lower end of described bucket shape groove than the upper end of bucket shape groove.
As further improvement of the utility model:
Described right flashboard is provided with attachment hole, and described link passes attachment hole and is fixed on the left flashboard, and described link is provided with the bolt head bigger than attachment hole;
Be provided with resilient pad between described bolt head and the described right flashboard;
The sealing surface weld deposit of corresponding left flashboard or right flashboard or left flashboard and right flashboard has cemented carbide on the described valve body.
The utlity model has following advantage: the utility model valve is in closing closed procedure, because left and right sides flashboard is to utilize the pressure of sphere plunger tip to hold out against to strut, the two flashboards centering that can freely commutate, and need not to be subjected to the influence of the plane nonparallelism that contacts with valve body, make the sealing surface contact more reliable, not friction between flashboard assembly and the valve body, thus make the sealability of valve more reliable, avoid the scratch of sealing surface, improved the working life of valve greatly; The movable connection structure of left side flashboard and right flashboard is simple and reliable, has significantly reduced the unlatching moment of torsion of flashboard, and opening and closing are more laborsaving; Sealing surface weld deposit has cemented carbide can further prolong the working life of valve.
Description of drawings
Fig. 1 is the utility model embodiment's a sectional structure schematic representation.
Embodiment
As shown in Figure 1, the bracing type seal plate gate valve of present embodiment comprises valve body 1, valve rod 9 and the flashboard assembly that links to each other with valve rod 9, valve body 1 inside is provided with gate valve passage 2 between importing and exporting, flashboard assembly is located in the gate valve passage 2, flashboard assembly comprises left flashboard 21, right flashboard 22, guide way 5 that links to each other with valve rod 9 and the plunger tip of being located on the guide way 53, the two ends up and down of left side flashboard 21 and right flashboard 22 flexibly connect by link 6 respectively, form bucket shape groove 4 between left side flashboard 21 and the right flashboard 22, guide way 5 stretches into bucket shape groove 4 and is arranged in the bucket shape groove 4, plunger tip 3 is spherical or the ellipsoid shape, and plunger tip 3 is littler and bigger than the lower end of bucket shape groove 4 than the upper end of bucket shape groove 4.
In the present embodiment, the top of valve body 1 is provided with valve gap 10, and valve rod 9 passes valve gap 10 and links to each other with handwheel 11, rotates handwheel 11 and can drive gate valve.Right flashboard 22 is provided with attachment hole 221, link 6 passes attachment hole 221 and is fixed on the left flashboard 21, link 6 is provided with the bolt head 61 bigger than attachment hole 221, thereby realize the flexible connection between left flashboard 21 and the right flashboard 22, the feasible plunger tips 3 that are arranged in the bucket shape groove 4 can promote left flashboard 21 by the inclined-plane of bucket shape groove 4 and right flashboard 22 is expanded to both sides respectively, realize the sealing of flashboard assembly and valve body 1.In order to protect bolt head 61 and right flashboard 22, be provided with resilient pad 7 between bolt head 61 and the right flashboard 22.In order to prolong the working life of sealing surface, the sealing surface weld deposit of valve body 1 corresponding left flashboard 21 has cemented carbide 8, in addition also can be as required at the sealing surface weld deposit of valve body 1 corresponding right flashboard 22 cemented carbide 8 be arranged.
Working principle of the present utility model is as follows: during throttle down, rotation hand wheel 11, valve rod 9 drives flashboard assembly and moves down, when flashboard assembly is displaced downwardly to valve body 1 bottom, left side flashboard 21 and right flashboard 22 stop to move down, valve rod 9 drives plunger tip 3 to be continued to move down, because plunger tip 3 is greater than the lower end of bucket shape groove 4, therefore the sphere of plunger tip 3 produces tension force to both sides respectively to the left flashboard 21 of bucket shape groove 4 both sides and right flashboard 22, thereby left flashboard 21 and right flashboard 22 are strutted, left flashboard 21 and right flashboard 22 held out against fully strut, realize realizing reliable contact seal with valve body 1.Owing to utilize sphere to hold out against to strut, left flashboard 21 and right flashboard 22 centering that can freely commutate is not subjected to the influence of 1 liang of plane nonparallelism of valve body, and it is more reliable that sealing surface is contacted, thus the sealability of raising valve.When opening valve, counterrotating handwheel 11, valve rod 9 drives on the flashboard assembly and moves, plunger tip 3 at first breaks away from bucket shape groove 4 lower ends, thereby removed the pressure of 3 pairs of left flashboards 21 of plunger tip and right flashboard 22, removed left flashboard 21 and right flashboard 22 and contacted, continued rotation hand wheel 11 then with sealing between the valve body 1, flashboard assembly moves on driving, until opening valve fully.Because having removed flashboard assembly before opening flashboard assembly contacts with sealing between the valve body 1, realized zero friction between flashboard assembly and the valve body 1, thereby significantly reduced the unlatching moment of torsion of flashboard assembly, avoided the scratch of sealing surface, improved the working life of valve greatly.
The above only is a preferred implementation of the present utility model, and protection domain of the present utility model is not limited in above-mentioned mode of execution, and every technological scheme that belongs to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art; some improvements and modifications of under the prerequisite that does not break away from principle of the present utility model, carrying out; for example left flashboard 21 and right flashboard 22 adopt other movable connection method; or plunger tip 3 is made as ellipsoid shape or the like, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. bracing type seal plate gate valve, comprise valve body (1), valve rod (9) and the flashboard assembly that links to each other with valve rod (9), described valve body (1) is inner to be provided with gate valve passage (2) between importing and exporting, described flashboard assembly is located in the gate valve passage (2), it is characterized in that: described flashboard assembly comprises left flashboard (21), right flashboard (22), the guide way (5) that links to each other with valve rod (9) and be located at plunger tip (3) on the guide way (5), the two ends up and down of described left flashboard (21) and right flashboard (22) flexibly connect by link (6) respectively, form bucket shape groove (4) between described left flashboard (21) and the right flashboard (22), described guide way (5) stretches into bucket shape groove (4) and is arranged in the bucket shape groove (4), described plunger tip (3) is spherical or the ellipsoid shape, and described plunger tip (3) is littler and bigger than the lower end of described bucket shape groove (4) than the upper end of bucket shape groove (4).
2. plate valve according to claim 1, it is characterized in that: described right flashboard (22) is provided with attachment hole (221), described link (6) passes attachment hole (221) and is fixed on the left flashboard (21), and described link (6) is provided with the bolt head (61) bigger than attachment hole (221).
3. plate valve according to claim 2 is characterized in that: be provided with resilient pad (7) between described bolt head (61) and the described right flashboard (22).
4. according to claim 1 or 2 or 3 described plate valves, it is characterized in that: the sealing surface weld deposit that described valve body (1) is gone up corresponding left flashboard (21) or right flashboard (22) or left flashboard (21) and right flashboard (22) has cemented carbide (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020226972XU CN201836422U (en) | 2010-06-17 | 2010-06-17 | Prop open type sealed flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020226972XU CN201836422U (en) | 2010-06-17 | 2010-06-17 | Prop open type sealed flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836422U true CN201836422U (en) | 2011-05-18 |
Family
ID=44006526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020226972XU Expired - Fee Related CN201836422U (en) | 2010-06-17 | 2010-06-17 | Prop open type sealed flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883751B (en) * | 2014-04-09 | 2016-03-23 | 金首广 | Three expansion sluice valves |
-
2010
- 2010-06-17 CN CN201020226972XU patent/CN201836422U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883751B (en) * | 2014-04-09 | 2016-03-23 | 金首广 | Three expansion sluice valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20120617 |