CN204358145U - A kind of high-pressure parallel double-flashboard gate valve - Google Patents
A kind of high-pressure parallel double-flashboard gate valve Download PDFInfo
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- CN204358145U CN204358145U CN201420822489.6U CN201420822489U CN204358145U CN 204358145 U CN204358145 U CN 204358145U CN 201420822489 U CN201420822489 U CN 201420822489U CN 204358145 U CN204358145 U CN 204358145U
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Abstract
The utility model relates to a kind of high-pressure parallel double-flashboard gate valve, solve a left side, the problem of poor sealing between right flashboard and valve body, it comprises valve body, valve seat, flashboard, flashboard frame, valve rod, valve gap and sealing mechanism, flashboard is contained in the middle of valve body, valve seat is installed between flashboard and valve body, valve rod lower end is connected to flashboard frame upper end, flashboard frame runs through and is connected on flashboard, valve gap runs through and is socketed on valve rod, and valve gap is embedded on valve body, sealing mechanism is contained between valve rod and valve body, described flashboard is divided into left flashboard and right flashboard, on left flashboard and right flashboard, corresponding position is provided with the groove for settling spring, described groove difference array distribution is on left flashboard and right flashboard, described flashboard is fixed on flashboard frame by securing means, preloading spring is that array is placed on a left side, on right flashboard, make a left side, right flashboard can equably by the thrust of preloading spring, thus can be good at real new left, the sealing of right flashboard and valve body.
Description
Technical field
The utility model relates to a kind of gate valve, particularly a kind of high-pressure parallel double-flashboard gate valve.
Background technique
Domestic and international traditional gate valve is all the single, double flashboard structure adopting band inclined-plane, and form the sealing pair on an inclined-plane with valve seat, the lower thrust by valve rod reaches the effect of forced seal.Parallel gate plate formula gate valve adopts double-flashboard structure usually, and it mainly comprises valve body, the valve rod goed deep in valve body, the left and right flashboard etc. be connected with valve rod.It blocks principle, and valve rod promotes left and right flashboard and enters in the runner of valve body, and the sealing surface that left flashboard promotes right flashboard under the effect of valve flowing channel side pressure medium presses to opposite side, realizes the selfsealings of runner.Driven type gate valve double disc parallel seat designs, and is to rely on hydrodynamic pressure to realize the sealing of left and right flashboard: hydrodynamic pressure is too low, cannot promote right flashboard and be close to sealing surface, and when hydrodynamic pressure is too high, left flashboard cannot be close to sealing surface.
Patent No. 201310374900(high pressure relief formula double disc parallel seat single-face hard sealing gate valve) disclose on a left side, preloading spring is set up between right flashboard, a left side is solved with this, the right problem cannot being close to sealing surface, but with no specific disclosure of the position that preloading spring is arranged in this patent application document, and can only intuitively find out that preloading spring is positioned at a left side from patent accompanying drawing, in the middle of right flashboard, under fluid pressure action, elastic force can only act on a left side, in the middle of right flashboard, and cause the edge discontinuity of flashboard, elastic force is partial to certain direction with making flashboard non-directional, therefore the problem of sealing cannot really be solved.
Model utility content
In order to overcome the deficiency of poor sealing between left and right flashboard and valve body, the utility model provides a kind of high-pressure parallel double-flashboard gate valve.
The technological scheme that the utility model adopts is: a kind of high-pressure parallel double-flashboard gate valve, it comprises valve body, valve seat, flashboard, flashboard frame, valve rod, valve gap and sealing mechanism, flashboard is contained in the middle of valve body, valve seat is installed between flashboard and valve body, valve rod lower end is connected to flashboard frame upper end, flashboard frame runs through and is connected on flashboard, valve gap runs through and is socketed on valve rod, and valve gap is embedded on valve body, sealing mechanism is contained between valve rod and valve body, described flashboard is divided into left flashboard and right flashboard, on left flashboard and right flashboard, corresponding position is provided with the groove for settling preloading spring, described groove difference array distribution is on left flashboard and right flashboard, described flashboard is fixed on flashboard frame by securing means.
On described left flashboard and right flashboard, array distribution has 3 grooves respectively.
Described securing means comprises stop nut and full bolt stud.
Also comprise sealing pair, sealing pair is separately positioned between valve seat and left flashboard and between valve seat and right flashboard.
Also comprise connecting cover, this connecting cover is fixedly connected on valve body upper end by fastening piece, and valve gap is fixedly connected with this connecting cover by fastening piece.
Described sealing mechanism comprises seal ring, seal ring, wedge shape sealing ring, packing ring, filler, pressing plate and gland, seal ring is between valve gap lower end and valve rod, wedge shape sealing ring, seal ring, packing ring are successively set between valve gap and valve body, filler is arranged between valve gap upper end and valve rod, gland is fixed on filler upper end, pressing plate is pressed in above gland, and gland is fixedly connected on connecting cover upper end by fastening piece, is provided with support outside pressing plate.
Described sealing mechanism also comprises Expanded graphite, and Expanded graphite is between seal ring and wedge shape sealing ring.
Described link is suitable screw bolt and nut.
The beneficial effects of the utility model are: the utility model is array groove on left and right flashboard, for placing preloading spring, by multiple preloading spring, to left and right flashboard applied thrust, because preloading spring is that array is placed on left and right flashboard, so left and right flashboard equably by the thrust of preloading spring, thus can be good at the sealing of real new left and right flashboard and valve body, there will not be with center is force bearing point, and the situation of certain side of deflection, non-directional ground.
Accompanying drawing explanation
Fig. 1 is overall structure figure of the present utility model.
Fig. 2 is the plan view of the right flashboard of the utility model.
Fig. 3 is the enlarged view at A place in Fig. 1.
Fig. 4 is the enlarged view at B place in Fig. 1.
Fig. 5 is the enlarged view at C place in Fig. 1.
1-valve body, 2-valve seat, the left flashboard of 31-, the right flashboard of 32-, 33-groove, 34-preloading spring, 35-stop nut, the full bolt stud of 36-, 4-flashboard frame, 5-valve rod, 6-valve gap, 61-seal ring, 62-seal ring, 63-wedge shape sealing ring, 64-Expanded graphite, 65-packing ring, 66-filler, 67-pressing plate, 68-gland, 7-sealing pair, 8-connecting cover, 9-support, 10-rotates handwheel.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As Fig. 1, shown in Fig. 2, a kind of high-pressure parallel double-flashboard gate valve, it comprises valve body 1, valve seat 2, flashboard, flashboard frame 4, valve rod 5, valve gap 6 and sealing mechanism, flashboard is contained in the middle of valve body 1, valve seat 2 is installed between flashboard and valve body 1, valve rod 5 lower end is connected to flashboard frame upper end, flashboard frame 4 runs through and is connected on flashboard, valve gap 6 runs through and is socketed on valve rod 5, and valve gap 6 is embedded on valve body 1, sealing mechanism is contained between valve rod 5 and valve body 1, described flashboard is divided into left flashboard 31 and right flashboard 32, on left flashboard 31 and right flashboard 32, corresponding position is provided with the groove 33 for settling preloading spring 34, described groove 33 difference array distribution is on left flashboard 31 and right flashboard 32, described flashboard is fixed on flashboard frame 4 by securing means, on a left side, array 3 grooves 33 on right flashboard, for placing preloading spring 34, by multiple preloading spring 34, give left, right flashboard applied thrust, because preloading spring 34 is that array is placed on a left side, on right flashboard, so left, right flashboard can equably by the thrust of preloading spring 34, thus can be good at real new left, the sealing of right flashboard and valve body 1, there will not be with center is force bearing point, and the situation of certain side of deflection, non-directional ground.
As shown in Figure 3, described securing means comprises stop nut 35 and full bolt stud 36, carries out spacing, can fix left and right flashboard better, prevent in use with stop nut 35 to full bolt stud 36, left and right flashboard generation lateral displacement.
As shown in Figure 1, also comprise two pairs of sealing pairs 7, often pair of sealing pair 7 is made up of two sealing gaskets, and wherein a pair sealing pair 7 is arranged between valve seat 2 and left flashboard 31, a sealing gasket of sealing pair 7 is fixed on valve seat 2 sidewall, and another sealing gasket is fixed on left flashboard 31 sidewall; A pair sealing pair 7 is arranged between valve seat 2 and right flashboard 32, a sealing gasket of sealing pair 7 is fixed on valve seat 2 sidewall, another sealing gasket is fixed on right flashboard 32 sidewall, and sealing pair 7, in order to auxiliary preloading spring 34, realizes the sealing between left and right flashboard and valve seat 2 better.
As shown in Figure 1, also comprise connecting cover 8, this connecting cover 8 is fixedly connected on valve body 1 upper end by fastening piece, and valve gap 6 is fixedly connected with this connecting cover 8 by fastening piece, and valve gap 6, in mode in suspension, is placed in valve body 1 by connecting cover 8.
As Fig. 1, shown in Fig. 4 and Fig. 5, described sealing mechanism comprises seal ring 61, seal ring 62, wedge shape sealing ring 63, packing ring 65, filler 66, pressing plate 67 and gland 68, seal ring 61 is between valve gap 6 lower end and valve rod 5, seal between valve gap 6 lower end and valve rod 5, wedge shape sealing ring 63, seal ring 62, packing ring 65 is successively set between valve gap 6 and valve body 1, seal between valve gap 6 and valve body 1, filler 66 is arranged between valve gap 6 upper end and valve rod 5, gland 68 is fixed on filler 66 upper end, pressing plate 67 is pressed in above gland 68, and gland 68 is fixedly connected on connecting cover 8 upper end by fastening piece, to the sealing between valve gap 6 upper end and valve rod 5, support 9 is provided with outside pressing plate 67, support 9 upper end is provided with rotates handwheel 10, rotate handwheel 10 to be connected with valve rod 5.
As shown in Figure 5, described sealing mechanism also comprises Expanded graphite 64, Expanded graphite 64 between seal ring 62 and wedge shape sealing ring 6362, install valve gap 6 time, Expanded graphite 64 can reduce the frictional force between valve gap 6 and valve body 1, facilitates the assembling of valve gap 6 and valve body 1.
Described link is suitable screw bolt and nut, by the cooperation of screw bolt and nut, carries out fastening, be easy for installation and removal to each position.
Below described by reference to the accompanying drawings embodiment is only preferred implementation of the present utility model, and the restriction not to protection domain of the present utility model, and any improvement done based on the utility model spirit all ought within the utility model protection domain.
Claims (8)
1. a high-pressure parallel double-flashboard gate valve, it comprises valve body (1), valve seat (2), flashboard, flashboard frame (4), valve rod (5), valve gap (6) and sealing mechanism, flashboard is contained in the middle of valve body (1), valve seat (2) is installed between flashboard and valve body (1), valve rod (5) lower end is connected to flashboard frame (4) upper end, flashboard frame (4) runs through and is connected on flashboard, it is characterized in that: valve gap (6) runs through and is socketed on valve rod (5), and valve gap (6) is embedded on valve body (1), sealing mechanism is contained between valve rod (5) and valve body (1), described flashboard is divided into left flashboard (31) and right flashboard (32), the groove (33) for settling preloading spring (34) is provided with at left flashboard (31) and the upper corresponding position of right flashboard (32), described groove (33) difference array distribution is on left flashboard (31) and right flashboard (32), described flashboard is fixed on flashboard frame (4) by securing means.
2. a kind of high-pressure parallel double-flashboard gate valve according to claim 1, is characterized in that: on described left flashboard (31) and right flashboard (32), array distribution has 3 grooves (33) respectively.
3. a kind of high-pressure parallel double-flashboard gate valve according to claim 1, is characterized in that: described securing means comprises stop nut (35) and full bolt stud (36).
4. a kind of high-pressure parallel double-flashboard gate valve according to claim 1, is characterized in that: also comprise sealing pair (7), sealing pair (7) is separately positioned between valve seat (2) and left flashboard (31) and between valve seat (2) and right flashboard (32).
5. a kind of high-pressure parallel double-flashboard gate valve according to claim 1, it is characterized in that: also comprise connecting cover (8), this connecting cover (8) is fixedly connected on valve body (1) upper end by fastening piece, and valve gap (6) is fixedly connected with this connecting cover (8) by fastening piece.
6. a kind of high-pressure parallel double-flashboard gate valve according to claim 5, it is characterized in that: described sealing mechanism comprises seal ring (61), seal ring (62), wedge shape sealing ring (63), packing ring (65), filler (66), pressing plate (67) and gland (68), seal ring (61) is positioned between valve gap (6) lower end and valve rod (5), wedge shape sealing ring (63), seal ring (62), packing ring (65) is successively set between valve gap (6) and valve body (1), filler (66) is arranged between valve gap (6) upper end and valve rod (5), gland (68) is fixed on filler (66) upper end, pressing plate (67) is pressed in gland (68) top, and gland (68) is fixedly connected on connecting cover (8) upper end by fastening piece, support (9) is provided with outside pressing plate (67).
7. a kind of high-pressure parallel double-flashboard gate valve according to claim 6, it is characterized in that: described sealing mechanism also comprises Expanded graphite (64), Expanded graphite (64) is positioned between seal ring (62) and wedge shape sealing ring (63).
8. a kind of high-pressure parallel double-flashboard gate valve according to claim 5 or 6, is characterized in that: described link is suitable screw bolt and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420822489.6U CN204358145U (en) | 2014-12-23 | 2014-12-23 | A kind of high-pressure parallel double-flashboard gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420822489.6U CN204358145U (en) | 2014-12-23 | 2014-12-23 | A kind of high-pressure parallel double-flashboard gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204358145U true CN204358145U (en) | 2015-05-27 |
Family
ID=53259615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420822489.6U Active CN204358145U (en) | 2014-12-23 | 2014-12-23 | A kind of high-pressure parallel double-flashboard gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204358145U (en) |
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2014
- 2014-12-23 CN CN201420822489.6U patent/CN204358145U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |