CN202561178U

CN202561178U - Exhaust valve

Info

Publication number: CN202561178U
Application number: CN2012202343483U
Authority: CN
Inventors: 洪宝玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-23
Filing date: 2012-05-23
Publication date: 2012-11-28
Anticipated expiration: 2022-05-23

Abstract

The utility model involves an exhaust valve used on a water delivery pipeline, and provides an exhaust valve capable of cushioning the air flow, preventing occurrence of air plug phenomenon and ensuring the safety of the water delivery pipeline and having good exhaust effect and long service life. The exhaust valve includes a valve body provided with a perpendicular exhaust passage, a valve cap disposed on the valve body, and a float ball disposed in the valve body; the valve cap is provided with thereon an exhaust cavity communicating with the exhaust passage; a cushion valve body in the openable/closable connection with the valve cap exhaust cavity is disposed above the float ball in the valve body, and includes a cushion valve flap and a guide rod; the inner side of the exhaust cavity of the valve cap is provided with a guide sleeve; a main exhaust port is disposed on the guide sleeve, and the guide rod is disposed on the guide sleeve telescopic upwards and downwards; the cushion valve flap are fixedly disposed at one end of the guide rod and in the openable/closable arrangement on the exhaust cavity of the valve cap via the expansion and contraction of the guide rod; an airway for allowing the air to flow is disposed between the cushion valve flap and the valve body; and the circumference inner side of the guide rod is provided with a secondary exhaust port communicating with the valve cap exhaust cavity.

Description

A kind of outlet valve

Technical field

The utility model relates to the outlet valve that is used on the waterline, relates in particular to a kind of outlet valve.

Background technique

The height point place that outlet valve mainly is installed in aqueduct is used to arrange ducted gas, and when having gas to overflow on the waterline, gas can be climb along pipeline and got into the top that the outlet valve valve pocket accumulates in outlet valve; Along with increasing of gas in the valve; Pressure rises, and when gas pressure during greater than system pressure, gas can make the water surface decline chamber in; Ball float descends with water level, opens relief opening; After gas drained, water level rose, and floating drum also rises thereupon, closes relief opening.Same reason produces negative pressure in system, the water surface descends in the valve pocket, and Exhaust Open because this moment, external atmosphere pressure force rate system pressure was big, so atmosphere can get into system through relief opening, prevents the harm of negative pressure.

Existing outlet valve generally comprises the valve body of vertical runner, is located at the valve gap on the valve body, is located at the valve body inner float ball; Said valve gap is provided with relief opening, and the runner hole wall of valve gap is provided with the sealing pair that is connected with the ball float folding, and it is executive component that above-mentioned outlet valve directly adopts ball float; Very fast when starting water pump owing to gas flow rate; Ball float is stuck on the sealing pair of valve gap runner hole wall when rising easily, thereby forms the stifled phenomenon of gas, influences degassing function.

The model utility content

Therefore, to above-mentioned problem, available buffer air-flow when the utility model proposes a kind of simple in structure, exhaust, gas stifled phenomenon, good exhaust effect can not occur, can ensure the outlet valve of waterline safety, long service life.

For realizing above-mentioned purpose; The utility model has adopted following technological scheme: a kind of outlet valve; Comprise valve body with vertical exhaust passage; Be located at the valve gap on the valve body and be located at the ball float in the valve body, said valve gap is provided with the exhaust cavity that is connected with the exhaust passage, but the top that is positioned at ball float in the said valve body also is provided with the buffering valve body that is connected with the folding of valve gap exhaust cavity; Said buffering valve body comprises buffering flap and guide rod; The exhaust cavity inboard of said valve gap is provided with guide sleeve, and said guide sleeve is provided with main vent, and said guide rod can upper and lower flexible being located on the guide sleeve; But said buffering flap is fixedly arranged on guide rod near on the periphery wall of that end of ball float and on the exhaust cavity of being located at valve gap of the flexible folding through guide rod; Be provided with the air flue that supplied gas flows between said buffering flap and the valve body, said guide rod is provided with and can guide rod be suspended on the limited ring on the guide sleeve near that free-ended periphery of valve gap, and the inside circumference of said guide rod offers the auxiliary exhaust port that is connected with the valve gap exhaust cavity.

Further improvedly be: also be provided with miniature outlet valve on the said valve gap, the suction port of said miniature outlet valve is connected with the exhaust passage of valve body, and the relief opening of miniature outlet valve is towards atmosphere.

Further improvedly be: be provided with floating block in the valve pocket of said miniature outlet valve, the upper end of said floating block is provided with the sealing surface that is used to seal miniature outlet valve relief opening.

Further improvedly be: also be provided with dust cover on the said valve gap, said dust cover is provided with relief opening.

Further improvedly be: Air Filter on the relief opening of said dust cover.

Further improvedly be: the periphery that said dust cover is positioned at miniature outlet valve top extends radially outwardly and prevents that dust from falling into the retaining edge of miniature outlet valve.

Through adopting the aforementioned techniques scheme, the beneficial effect of the utility model is: the utility model outlet valve, but the top that is positioned at ball float in the said valve body also is provided with the buffering valve body that is connected with the folding of valve gap exhaust cavity; Said buffering valve body comprises buffering flap and guide rod,, be provided with the air flue that supplied gas flows between said buffering flap and the valve body; The inside circumference of said guide rod offers the auxiliary exhaust port that is connected with the valve gap exhaust cavity, and during starting mode of pump, a large amount of gases are discharged from main vent through the air flue between buffering valve body and the valve body; When gas flow rate was accelerated, the buffering valve body is action sealing main vent upwards, and at this moment air can continue to discharge from the auxiliary exhaust port of buffering valve body guide rod; When liquid level raise, buoyancy rose ball float and blocks secondary gas port, makes outlet valve be closed; When water pump stops to start, produce vacuum in the aqueous reflux pipeline, ball float and the landing rapidly under the effect of own wt of buffering valve body; The gas that flows backwards is simultaneously discharged in outlet valve in a large number, and equalizing main pressure has a process because the buffering valve body upwards seals main vent; A large amount of gases are discharged by main vent, thereby the bore of secondary gas port can be provided with point, get lodged on the auxiliary exhaust port thereby ball float can not blocked; Can prevent effectively that gas is stifled, degassing function is good, can ensure the safety of waterline.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation;

Fig. 2 is the structural representation that the utility model embodiment main vent is closed;

Fig. 3 is the structural representation that the utility model embodiment major-minor relief opening is closed respectively.

Embodiment

Combine accompanying drawing and embodiment that the utility model is further specified at present.

As scheme Fig. 1 to shown in Figure 3; The utility model discloses a kind of outlet valve; Comprise valve body 1 with vertical exhaust passage 11; Be located at the valve gap 2 on the valve body 1 and be located at the ball float 3 in the valve body 1; Said valve gap 2 is provided with the exhaust cavity 21 that is connected with the exhaust passage, but the top that is positioned at ball float 3 in the said valve body 1 also is provided with the buffering valve body that is connected with 21 foldings of valve gap 2 exhaust cavitys, and said buffering valve body comprises buffering flap 41 and guide rod 42; Exhaust cavity 21 inboards of said valve gap 2 are provided with guide sleeve 22; Said guide sleeve 22 is provided with main vent 221, and said guide rod 42 can upper and lower flexible being located on the guide sleeve 22, but said buffering flap 41 is fixedly arranged on guide rod 42 near on the periphery wall of ball float 3 those ends and on the exhaust cavity of being located at valve gap 2 21 of the flexible folding through guide rod 42; The outside that face that said valve gap 2 is connected with 41 foldings of buffering flap is positioned at exhaust cavity 21 is provided with rubber valve seat 23; Be provided with the air flue 12 that supplied gas flows between said buffering flap 41 and the valve body 1, said guide rod 42 is provided with and can guide rod 42 be suspended on the limited ring 421 on the guide sleeve 22 near valve gap 2 those free-ended periphery, and the inside circumference of said guide rod 42 offers the auxiliary exhaust port 422 that is connected with valve gap 2 exhaust cavitys.

Like Fig. 2 to Fig. 3, during starting mode of pump, a large amount of gases are discharged from main vent 221 through the air flue 12 between buffering valve body and the valve body; When gas flow rate was accelerated, the buffering valve body is action sealing main vent upwards, and at this moment air can continue to discharge from the auxiliary exhaust port of buffering valve body guide rod; When liquid level raise, buoyancy rose ball float and blocks secondary gas port 422, makes outlet valve be closed; When water pump stops to start, produce vacuum in the aqueous reflux pipeline, ball float and the landing rapidly under the effect of own wt of buffering valve body; The gas that flows backwards is simultaneously discharged in outlet valve in a large number, and equalizing main pressure has a process because the buffering valve body upwards seals main vent; A large amount of gases are discharged by main vent, thereby the bore of secondary gas port can be provided with point, get lodged on the auxiliary exhaust port 422 thereby ball float can not blocked; Can prevent effectively that gas is stifled, degassing function is good, can ensure the safety of waterline.

As scheme Fig. 1 to shown in Figure 3, and also being provided with miniature outlet valve 5 on the said valve gap 2, the suction port 51 of said miniature outlet valve 5 is connected with the exhaust passage 11 of valve body 1; The relief opening 52 of miniature outlet valve 5 leads to atmosphere, is provided with floating block 53 in the valve pocket of said miniature outlet valve, and the upper end of said floating block 53 is provided with the sealing surface that is used to seal miniature outlet valve relief opening; Outlet valve can reduce the unsteady frequency of ball float; The gas that produces in the water delivery process often rises successively with the form of bubble and goes forward side by side in the micro-outlet valve, when air rises to certain pressure; Miniature outlet valve is opened discharge gas; And close rapidly, and the ball float in the valve pocket need not do the exhaust action, has prolonged the working life of pontoon bridge.

Also be provided with dust cover 6 on the said valve gap 2; Said dust cover 6 is provided with relief opening 61; The periphery that Air Filter 7 on the relief opening 61 of said dust cover 6, said dust cover 6 are positioned at miniature outlet valve 5 tops extends radially outwardly and prevents that retaining that dust falls into miniature outlet valve is along 62.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; Can make various variations to the utility model in form with on the details, be the protection domain of the utility model.

Claims

1. outlet valve; Comprise valve body with vertical exhaust passage; Be located at the valve gap on the valve body and be located at the ball float in the valve body, said valve gap is provided with the exhaust cavity that is connected with the exhaust passage, it is characterized in that: but the top that is positioned at ball float in the said valve body also is provided with the buffering valve body that is connected with the folding of valve gap exhaust cavity; Said buffering valve body comprises buffering flap and guide rod; The exhaust cavity inboard of said valve gap is provided with guide sleeve, and said guide sleeve is provided with main vent, and said guide rod can upper and lower flexible being located on the guide sleeve; But said buffering flap is fixedly arranged on guide rod near on the periphery wall of that end of ball float and on the exhaust cavity of being located at valve gap of the flexible folding through guide rod; Be provided with the air flue that supplied gas flows between said buffering flap and the valve body, said guide rod is provided with and can guide rod be suspended on the limited ring on the guide sleeve near that free-ended periphery of valve gap, and the inside circumference of said guide rod offers the auxiliary exhaust port that is connected with the valve gap exhaust cavity.

2. outlet valve according to claim 1 is characterized in that: also be provided with miniature outlet valve on the said valve gap, the suction port of said miniature outlet valve is connected with the exhaust passage of valve body, and the relief opening of miniature outlet valve leads to atmosphere.

3. outlet valve according to claim 2 is characterized in that: be provided with floating block in the valve pocket of said miniature outlet valve, the upper end of said floating block is provided with the sealing surface that is used to seal miniature outlet valve relief opening.

4. outlet valve according to claim 2 is characterized in that: also be provided with dust cover on the said valve gap, said dust cover is provided with relief opening.

5. outlet valve according to claim 4 is characterized in that: Air Filter on the relief opening of said dust cover.

6. outlet valve according to claim 4 is characterized in that: the periphery that said dust cover is positioned at miniature outlet valve top extends radially outwardly and prevents that dust from falling into the retaining edge of miniature outlet valve.