CN204477398U - A kind of Swing check valve - Google Patents
A kind of Swing check valve Download PDFInfo
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- CN204477398U CN204477398U CN201520068881.0U CN201520068881U CN204477398U CN 204477398 U CN204477398 U CN 204477398U CN 201520068881 U CN201520068881 U CN 201520068881U CN 204477398 U CN204477398 U CN 204477398U
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- valve
- rocking lever
- flap
- valve body
- swing check
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Abstract
The utility model discloses a kind of Swing check valve, it is for preventing the valve that in pipeline, medium flows backwards, its structure comprises valve body, valve seat, valve gap, flap assembly and rocking lever etc., mainly the hinging structure between rocking lever upper end and valve body is improved, it is provided with a pair horizontal-extending at the mount inlet inwall of valve body and is with reeded boss, again the both sides, rocking lever upper end with flap assembly are respectively equipped with the equipped hinge that to rotate with groove, therefore only hinge need be loaded in groove and can form the hinged rotation of flap assembly around rocking lever upper end, this hinging structure obviously without the need to arranging axis hole again on valve body, thus reduce the outer connection of perforation, avoid leaking outside, meanwhile, this hinged design also have structure simple, produce the advantages such as easy for installation, low cost of manufacture, sealing be reliable.
Description
Technical field
The utility model relates to the check valve structure stoping medium to flow backwards in a kind of pipe-line system, refers in particular to a kind of Swing check valve.
Background technique
Safety check belongs to automatic valve one class, is open-shut device, the valve automatically stoping medium counter flow as flap assembly by medium active force, and its fundamental function protects machinery by preventing medium from flowing backwards in pipe-line system.At present, safety check can be divided into Lift check valve according to structure, Swing check valve and butterfly shaped check valve etc., such as the disclosed China Patent No. of Swing check valve is wherein 201420555319.6 shown in " Swing check valve ", its structure is mainly by valve body, valve pocket, valve gap, valve seat, flap assembly, rocking lever, the formations such as pitman arm shaft, flap assembly is fixed on rocking lever lower end, rocking lever upper end is arranged in valve pocket by pitman arm shaft is hinged, therefore rotated by the pitman arm shaft formation of flap assembly around rocking lever upper end, can with valve seat between form to seal and open and close, but, the hinging structure of above-mentioned rocking lever upper end in valve pocket is all need on valve body, pre-set the axis hole that can penetrate for pitman arm shaft, again the rocking lever assembled and flap assembly are loaded in valve pocket after putting in place, the pitman arm shaft penetrated by axis hole and by rocking lever upper end formed be hinged mutually, therefore finally also need to carry out blanking cover sealing to axis hole, because the perforation had more on valve body connects outward, leak leak source at the place being virtually also just present in valve, and this requires that to leaking outside strict operating mode is not ideal chose.Meanwhile, also there is complex structure, produce and install the defects such as inconvenience, manufacture cost is high, sealing is reliable not in this hinged design.
Summary of the invention
Technical problem to be solved in the utility model be to overcome prior art defect and provide a kind of structural design simple, produce easy for installation, reduce to connect outward, avoid leaking outside, low cost of manufacture, the reliable a kind of Swing check valve of sealing.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of Swing check valve, comprise valve body, be arranged on the valve pocket in valve body, be arranged on body top and be communicated with the mount inlet of valve pocket, seal the valve gap be arranged in described mount inlet, and the valve seat be arranged in valve pocket and flap assembly, also being provided with lower end in this valve pocket is connected on flap assembly, the rocking lever of upper end thereof in valve body, described flap assembly rotates around the upper end that rocking lever is hinged to seal and opens and closes valve seat, hinging structure between described rocking lever upper end and valve body is the boss being provided with a pair horizontal-extending at the mount inlet inwall of valve body, each boss is equipped with groove, described rocking lever upper end is provided with the hinge extended respectively to both sides, the hinge of these both sides rotate respectively be fitted in described two boss groove in.
Described valve gap is threaded in mount inlet, is provided with the "O"-ring forming sealing and install between this valve gap and valve body, and the contact of this valve gap bottom is on the hinge of rocking lever upper end.
Described groove is arc groove or rectangular recess.
Described flap assembly comprises the flap seat, flap and the pad that are fixedly mounted on rocking lever lower end, and the sealing contact of this flap left side opens and closes valve seat.
Described flap seat both ends of the surface are respectively equipped with the connecting shaft of concentric, described flap and pad are arranged on the connecting shaft of flap seat left side successively, and fixed by the nut be threaded, described rocking lever lower end is arranged on the connecting shaft of flap seat right side, and is fixed by the nut be threaded.
The left side that described flap seat contacts with flap is provided with three seals waterline.
Adjusting play is left between described rocking lever lower end and nut.
The left and right two ends of described valve pocket are set to water intake and water outlet respectively.
Compared with prior art, the utility model mainly improves the hinging structure between rocking lever upper end and valve body, it is provided with a pair horizontal-extending at the mount inlet inwall of valve body and is with reeded boss, again the both sides, rocking lever upper end with flap assembly are respectively equipped with the equipped hinge that to rotate with groove, therefore only hinge need be loaded in groove and can form the hinged rotation of flap assembly around rocking lever upper end, this hinging structure obviously without the need to arranging axis hole again on valve body, thus connecting outside minimizing perforation, avoiding leaking outside; Meanwhile, this hinged design also have structure simple, produce the advantages such as easy for installation, low cost of manufacture, sealing be reliable.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is A-A sectional view of Fig. 1.
Fig. 3 is the valve body structure schematic diagram (stereogram) shedding valve gap.
Fig. 4 is the valve body structure schematic diagram (plan view) shedding valve gap.
Fig. 5 is the structural representation of rocking lever.
Fig. 6 is the sectional structure schematic diagram of flap seat.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 6,1. valve body, 11. valve pockets, 12. valve seats, 13. mount inlets, 14. boss, 15. grooves, 2. flap assembly, 21. adjusting plays, 22. flap seats, 221. connecting shafts, 222. sealing waterlines, 23. flaps, 24. pads, 25. nuts, 3. rocking lever, 31. hinges, 4. "O"-ring, 5. valve gap.
A kind of Swing check valve, as shown in Figure 1 and Figure 2, it is that its structure is mainly made up of valve body 1, valve seat 12, valve gap 5, flap assembly 2 and rocking lever 3 etc. for preventing the valve that in pipeline, medium flows backwards.
Described valve body 1 adopts horizontal valve body as shown in Figure 3, Figure 4, the curved shape of profile, be provided with the valve pocket 11 of " ┻ " type threeway in this valve body 1, namely according to shown in Fig. 1, the left and right two ends of valve pocket 11 be set to water intake and water outlet respectively, valve body 1 top is provided with the mount inlet 13 being communicated with valve pocket 11; Described entery and delivery port is on same level line, by female thread structure external pipeline, for the circulation of pipe-line system medium; Described mount inlet 13 is mainly used in the valve gap 5 that is threaded, and also installs arranging "O"-ring 4 with the sealing formed between the two between valve gap and valve body 1.
In the middle part of described valve pocket 11, namely be positioned at into, valve seat 12 is provided with between water outlet, this valve seat is actually the sealing surface of the curved shape of a circle cross section that a circular inlet right side peripheral is arranged, flap assembly 2 and rocking lever 3 is provided with on the right side of valve seat 12, flap assembly 2 is fixedly mounted on the lower end of rocking lever 3 in advance to form one, then load from the mount inlet 13 at valve body 1 top together, again the upper end thereof of rocking lever 3 is arranged in valve body, therefore the upper end hinged around rocking lever 3 is formed rotation by flap assembly 2, thus and form rotary seal between valve seat 12 and open and close.
Hinging structure between described rocking lever 3 upper end and valve body 1 is the boss 14 being provided with a pair horizontal-extending at mount inlet 13 inwall of valve body 1, this boss casts together in company with valve body 1 to form, each boss 14 is equipped with groove 15, this groove shapes both can be arc groove, also can be rectangular recess; Simultaneously; rocking lever 3 upper end is provided with as shown in Figure 5 respectively to the hinge 31 that both sides extend; hinge and rocking lever 3 upper end of these both sides are linking body structure; and rotate respectively and be fitted in the groove 15 of two boss 14; coordinate the hinged rotation that can realize rocking lever 3 upper end by hinge 31 and groove 15; but in order to prevent the hinge 31 be arranged in groove 15 from deviating from; also need contact with the hinge 31 of rocking lever 3 upper end with valve gap 5 bottom be threaded in mount inlet 13, to make the rotation of rocking lever 3 more reliably steady.
Described flap assembly 2 mainly comprises the flap seat 22, flap 23 and the pad 24 that are fixedly mounted on rocking lever 3 lower end, its means of fixation is: flap seat 22 both ends of the surface are respectively equipped with the connecting shaft 221 of concentric as shown in Figure 6, be threaded with nut 25 after the connecting shaft 221 of flap seat 22 left side is set with flap 23 and pad 24 successively, to be fixed with nut 25 riveted by riveter hole on connecting shaft 221 again or threaded connection place is coated with anaerobic adhesive and is fixed, connect to prevent nut 25 and get loose; Also be threaded with nut 25 after the connecting shaft 221 of flap seat 22 right side is set with rocking lever 3 lower end, and be fixed to prevent nut 25 connection from getting loose by same structural type.
The left side that described flap seat 22 contacts with flap 23 is provided with three seals waterline 222, and the sealing contact of flap 23 left side opens and closes valve seat 12; Adjusting play 21 is left, for position during flap assembly 2 throttle down between self regulating valve lobe 23 and valve seat 12 between described rocking lever 3 lower end and nut 25.When flap assembly 2 moves through media impingement, because the hinge 31 of rocking lever 3 upper end is also rotatable by location, therefore flap assembly 2 forms rotation around hinge 31, thus rotary seal opens and closes valve seat 12.
The utility model eliminates the trouble that traditional Swing check valve must arrange perforation structure on valve body 1, therefore effectively can reduce the leak source that leaks, avoid occurring the phenomenon that leaks outside, decrease amount of parts, simplified structure design, reduce manufacture cost, conveniently produce installations, also facilitate maintenance, and whole valve seal more reliably, be easy to apply.
Claims (8)
1. a Swing check valve, comprise valve body (1), be arranged on the valve pocket (11) in valve body, be arranged on valve body (1) top and be communicated with the mount inlet (13) of valve pocket (11), seal the valve gap (5) be arranged in described mount inlet (13), and the valve seat (12) be arranged in valve pocket (11) and flap assembly (2), also being provided with lower end in this valve pocket (11) is connected on flap assembly (2), the rocking lever (3) of upper end thereof in valve body (1), described flap assembly (2) rotates around the upper end that rocking lever (3) is hinged to seal and opens and closes valve seat (12), it is characterized in that the hinging structure between described rocking lever (3) upper end and valve body (1) is the boss (14) being provided with a pair horizontal-extending at mount inlet (13) inwall of valve body (1), each boss is equipped with groove (15), described rocking lever (3) upper end is provided with the hinge (31) extended respectively to both sides, the hinge of these both sides rotate respectively be fitted in described two boss (14) groove (15) in.
2. a kind of Swing check valve according to claim 1, it is characterized in that described valve gap (5) is threaded in mount inlet (13), be provided with the "O"-ring (4) forming and seal and install between this valve gap (5) and valve body (1), the contact of this valve gap (5) bottom is on the hinge (31) of rocking lever (3) upper end.
3. a kind of Swing check valve according to claim 1, is characterized in that described groove (15) is arc groove or rectangular recess.
4. a kind of Swing check valve according to claim 1, it is characterized in that described flap assembly (2) comprises flap seat (22), flap (23) and the pad (24) being fixedly mounted on rocking lever (3) lower end, the sealing contact of this flap (23) left side opens and closes valve seat (12).
5. a kind of Swing check valve according to claim 4, it is characterized in that described flap seat (22) both ends of the surface are respectively equipped with the connecting shaft (221) of concentric, described flap (23) and pad (24) are arranged on the connecting shaft (221) of flap seat (22) left side successively, and fixed by the nut be threaded (25), described rocking lever (3) lower end is arranged on the connecting shaft (221) of flap seat (22) right side, and is fixed by the nut be threaded (25).
6. a kind of Swing check valve according to claim 5, is characterized in that the left side that described flap seat (22) contacts with flap (23) is provided with three seals waterline (222).
7. a kind of Swing check valve according to claim 5, is characterized in that leaving adjusting play (21) between described rocking lever (3) lower end and nut (25).
8. a kind of Swing check valve according to claim 1, is characterized in that described valve pocket (11) left and right two ends are set to water intake and water outlet respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520068881.0U CN204477398U (en) | 2015-02-02 | 2015-02-02 | A kind of Swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520068881.0U CN204477398U (en) | 2015-02-02 | 2015-02-02 | A kind of Swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204477398U true CN204477398U (en) | 2015-07-15 |
Family
ID=53633190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520068881.0U Active CN204477398U (en) | 2015-02-02 | 2015-02-02 | A kind of Swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204477398U (en) |
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2015
- 2015-02-02 CN CN201520068881.0U patent/CN204477398U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |