CN203023559U - Vent valve pressure-possessed air intake and exhaust quantity magnifying device - Google Patents
Vent valve pressure-possessed air intake and exhaust quantity magnifying device Download PDFInfo
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- CN203023559U CN203023559U CN 201220708670 CN201220708670U CN203023559U CN 203023559 U CN203023559 U CN 203023559U CN 201220708670 CN201220708670 CN 201220708670 CN 201220708670 U CN201220708670 U CN 201220708670U CN 203023559 U CN203023559 U CN 203023559U
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- pressure
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- piston
- valve
- outlet valve
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Abstract
The utility model discloses a vent valve pressure-possessed air intake and exhaust quantity magnifying structure which comprises a valve shaft and a valve body with an opening on the left side, a guide holder is arranged on the left of the valve body, a self-sealing structure is arranged at the position of the left side of the valve body, a piston is arranged in the valve body, the action area of the piston is larger than the sealing area of the self-sealing structure, the head end of the valve shaft is connected with the guide holder in a sliding mode, the self-sealing structure and the piston are coaxially sleeved and fixed on the valve shaft, a pressure balance cavity is formed between the right end of the piston and the right end of the valve body, a pressure cavity is formed between the left end of the piston and the left end of the valve body, a vent valve big air intake and exhaust port is formed in the pressure cavity, a vent valve small air intake and exhaust port and a pressure relief micro-pore are formed in the pressure balance cavity, the sectional area of the vent valve small air intake and exhaust port is larger than the sectional area of the pressure relief micro-pore, and the action area of the membrane structure is larger than the sealing area of the seal-sealing structure. According to the vent valve pressure-possessed air intake and exhaust quantity magnifying structure, the pressure balance cavity is used for adjusting differential pressures between of two ends of the piston, and the pressure cavity is enabled to be a final air intake and exhaust channel, effective magnifying of the air intake and exhaust quantity is achieved, and air exhaust capability is not restrained by pipeline pressure, and the size of the vent valve and installation position are decreased.
Description
Technical field
The utility model relates to the pipeline corollary equipment, refers to that particularly a kind of outlet valve compresses into the air displacement amplifying device.
Background technique
Outlet valve is applied to the pipeline air exhaust waters such as independent heating system, central heating system, heating boiler, when gas enters the top that the outlet valve inner chamber is gathered in outlet valve, along with increasing of gas in valve, pressure rise, when gas pressure during greater than system pressure, gas can make water surface decline in the chamber, the exhaust open of outlet valve; After gas drained, water level rose, exhaust close; Equally, produce negative pressure in system, in the outlet valve inner chamber, the water surface descends, exhaust open, due to this moment external atmosphere pressure force rate system pressure large, so atmosphere can enter system by relief opening, prevent the harm of negative pressure.
At present, outlet valve and micro-exhaust valve are due to design limitation, and the size of relief opening is less, often have and compress into exhaust problem, the intake and exhaust amount is little; The defectives such as the intake and exhaust ability of outlet valve is subjected to that line pressure affects.
Summary of the invention
The purpose of this utility model is to provide a kind of outlet valve to compress into the air displacement amplifying device for the problems referred to above, and this device can effectively amplify the air displacement of compressing into of outlet valve, and the venting capacity of this device is not subjected to the constraint of line pressure and outlet valve self function.
for achieving the above object, the technical solution adopted in the utility model is: a kind of outlet valve is compressed into the air displacement amplifying device, the valve body that comprises valve shaft and left side opening, described valve body left is provided with guide holder, described valve body left side opening is provided with self sealing structure, be provided with piston in described valve body, the active area of described piston is greater than the sealing area of described self sealing structure, described valve shaft head end and described guide holder are slidably connected, and described self sealing structure and described piston coaxial suit are fixed on described valve shaft, mineralization pressure counter balance pocket between described piston right-hand member and valve body right-hand member, mineralization pressure chamber between described piston left end and valve body left end, have the large porting of outlet valve on described pressure chamber, have the little porting of outlet valve and pressure release micropore on described pressure balance chamber, the cross-sectional area of the little porting of described outlet valve is greater than the cross-sectional area of described pressure release micropore.
the large porting access duct chamber of outlet valve on the utility model pressure chamber or outlet valve inner chamber, the little porting access of outlet valve on pressure balance chamber can have the outlet valve of pressure gas or the relief opening of micro-exhaust valve, utilize the pressure reduction at the pressure balance chamber regulating piston two ends communicate with the outlet valve relief opening, make the pressure chamber that communicates with duct chamber or outlet valve inner chamber become final intake and exhaust channel, and the opening size of this device valve body is much larger than the relief opening size of existing outlet valve, thereby amplification process and a large amount of breathing process of lower negative pressure of air displacement have been realized, thoroughly having solved outlet valve has and compresses into exhaust problem and micro-exhaust valve has the little problem of the air displacement compressed into, the venting capacity of this device is not retrained by line pressure, this device can effectively reduce the own vol of outlet valve and micro-exhaust valve, thereby reduces the mounting point and reduce production costs.
Further, described self sealing structure comprises flap, and the left side of described flap is provided with spring, and the left end of described spring is fixed on described guide holder, and the right-hand member of described spring is resisted against on the left surface of flap, and the right side of described flap is fixed with the first seal ring.Self sealing structure can be realized selfsealings under high pressure or low pressure condition, its seal pressure is very little, makes the low pressure seal spring strength very little, thereby avoids spring force to affect the pressure conversion of piston, makes this device realize smoothly the intake and exhaust enlarging function.
Further, the left end of described valve body is connected with adjusting nut, and described guide holder is fixed on the screw middle part of described adjusting nut.Adjusting nut is used for the intensity of Regulation spring, i.e. the compression degree of Regulation spring; Guide holder is used for the guiding of valve shaft, and wherein the gap between guide holder and nut is the large porting of this device, for the air turnover.
Preferably, on described piston, suit is fixed with seal ring.Seal ring on piston thoroughly separates pressure balance chamber and pressure chamber.
Further preferably, described pressure release micropore is opened on the valve body right flank.The pressure release micropore is used for realizing the pressure reduction conversion.
Description of drawings
Fig. 1 is that outlet valve has the sectional structure schematic diagram of compressing into the air displacement amplifying device.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is convenient to more clearly understand the utility model, but they do not consist of restriction to the utility model.
as shown in Figure 1, the utility model outlet valve is compressed into the air displacement amplifying device, comprise the valve body 2 of left side opening and stretch into the interior valve shaft 1 of valve body, the left end of described valve body 2 is connected with adjusting nut 11, described guide holder 3 is fixed on the front center of described adjusting nut 11 screws, guide holder 3 is provided with the guide through hole 301 of sliding for valve shaft 1, space between the screw of guide holder 3 and adjusting nut 11 is the large porting 13 of device, with environmental communication, for the air turnover, described valve body 2 left side openings are provided with self sealing structure 4, described self sealing structure 4 comprises flap 401, the left side of described flap 401 is provided with spring 402, the left end of described spring 402 is fixed on described guide holder 3, the right-hand member of described spring 402 is resisted against on the left surface of flap 401, be fixed with the first seal ring 403 on the right flank of described flap 401, seal ring seal pressure herein is very little, can realize selfsealings under high pressure or low pressure condition, be provided with piston 5 in described valve body 2, the active area of described piston 5 is much larger than the sealing area of described flap 401, described valve shaft 1 head end stretches in the guide through hole 301 of guide holder 3, thereby valve shaft 1 is slidably connected with described guide holder 3, and described self sealing structure 4 and described piston 5 coaxial packages use fastening nuts on described valve shaft 1, mineralization pressure counter balance pocket 6 between described piston 5 right-hand members and valve body 2 right-hand members, mineralization pressure chamber 7 between described piston 5 left ends and valve body 2 left ends, have the large porting 8 of outlet valve on described pressure chamber 7, have the little porting 9 of outlet valve and pressure release micropore 10 on described pressure balance chamber 6, described pressure release micropore 10 is opened on valve body 2 right flanks, the cross-sectional area of the little porting 9 of described outlet valve is greater than the cross-sectional area of described pressure release micropore 10.Wherein, on described piston 5, suit is fixed with two the second seal rings 12, and this second seal ring 12 is used for pressure balance chamber 6 and thorough isolated the opening of pressure chamber 7.
The utility model principle is described as follows: this device is the device that a kind of outlet valve with pressure gas can be arranged uses simultaneously, in this device, the valve body openings at flap 401 places much larger than the relief opening size of existing outlet valve, can effectively be amplified outlet valve and compress into air displacement (being degree of vacuum during air inlet).
When the pipeline positive pressure, large porting 8 access duct chamber or the outlet valve inner chambers of left side outlet valve, the little porting of outlet valve 9 accesses on the right can have the outlet valve of pressure gas or micro-exhaust valve (all have pressure gas ability is arranged micro-exhaust valve all can) the pressure gas port arranged, the little porting 9 of outlet valve works, have air the little porting of outlet valve 9 open, without air the little porting 9 of outlet valve close.when outlet valve carries out normal exhaust with pressure, there is the air of pressure to be entered the pressure balance chamber 6 of this device by the little porting 9 of outlet valve, due to pressure release micropore 10 runners much smaller than the little porting 9 of outlet valve, therefore the pressure P 2 of pressure balance chamber 6 rises to pipeline pressure or valve cavity pressure P 1, be P1=P2, piston this moment 5 left and right are stressed to be equated, be opening direction but flap 401 places are stressed, therefore this device is opened, install large porting 13 unlatchings, thereby realized the amplification process (air direct as shown by the arrows in Figure 1) of air displacement, when outlet valve carries out normal with pressure closing, the little porting 9 of outlet valve on the pressure balance chamber 6 of this device is closed, pressure balance chamber 6 is because the existence of pressure release micropore 10, its chamber pressure reduces to rapidly 0, and pressure chamber 7 or holding tube line or outlet valve chamber pressure, and the active area of piston 5 (area of piston left side and pressure intracavity gas contact) is much larger than the sealing area (area of flap right side and pressure intracavity gas contact) of flap 401, therefore piston 5 is stressed to right lateral, drive flap 401 right lateral shutoff devices, first seal ring 403 at flap 401 places is realized reliable selfsealings under Water Pressure.
During without pressure, this device promotes flap 401 sealings under 402 effects of low pressure seal spring when pipeline.By above working principle as can be known, this device has pressure gas ability to have remarkable result for improving outlet valve, pressure air is carried out a large amount of dischargings at a high speed, during work venting capacity and when not working sealing effect be not subjected to the impact of outlet valve itself, be not subjected to the impact of system pressure environment yet, can adapt to having of various characteristics has outlet valve and the micro-exhaust valve of pressure gas ability, and thoroughly having solved outlet valve has pressure gas difficulty and micro-exhaust valve that the problems such as pressure is narrow-minded are arranged.
when negative pressure appears in pipeline, ambient pressure is greater than pipeline inner chamber or outlet valve chamber pressure, this moment outlet valve little porting 9 open because the pipeline water level descends (pipeline do not occur high vacuum and-the water column separation can not appear in pipeline during the above vacuum of 0.07MPa, therefore the outlet valve water level can not descend), but be the 0.1PMa external pressure in pressure balance chamber 6 at this moment, this pressure is greater than the negative pressure in pressure chamber 7, and the active area of piston 5 is much larger than the sealing area of flap 401, therefore be evident as piston 5 left stressed, flap 401 is opened, device beginning negative inspiratory pressure.Found out by above principle, this device has made up partly the especially defective of micro-exhaust valve when responding negative pressure fast of pressure exhaust valve, and especially micro-exhaust valve, when relief opening is very little, negative pressure occurs and almost can't open.
Claims (5)
1. an outlet valve is compressed into the air displacement amplifying device, the valve body (2) that comprises valve shaft (1) and left side opening, it is characterized in that: described valve body (2) left is provided with guide holder (3), described valve body (2) left side opening is provided with self sealing structure (4), be provided with piston (5) in described valve body (2), the active area of described piston (5) is greater than the sealing area of described self sealing structure (4), described valve shaft (1) head end and described guide holder (3) are slidably connected, and described self sealing structure (4) and described piston (5) coaxial package are fixed on described valve shaft (1), mineralization pressure counter balance pocket (6) between described piston (5) right-hand member and valve body (2) right-hand member, mineralization pressure chamber (7) between described piston (5) left end and valve body (2) left end, have the large porting of outlet valve (8) on described pressure chamber (7), have the little porting of outlet valve (9) and pressure release micropore (10) on described pressure balance chamber (6), the cross-sectional area of the little porting of described outlet valve (9) is greater than the cross-sectional area of described pressure release micropore (10).
2. outlet valve according to claim 1 is compressed into the air displacement amplifying device, it is characterized in that: described self sealing structure (4) comprises flap (401), the left side of described flap (401) is provided with spring (402), the left end of described spring (402) is fixed on described guide holder (3), the right-hand member of described spring (402) is resisted against on the left surface of flap (401), and the right side of described flap (401) is fixed with the first seal ring (403).
3. outlet valve according to claim 1 is compressed into the air displacement amplifying device, it is characterized in that: the left end of described valve body (2) is connected with adjusting nut (11), and described guide holder (3) is fixed on the screw middle part of described adjusting nut (11).
4. outlet valve according to claim 1 is compressed into the air displacement amplifying device, it is characterized in that: the upper suit of described piston (5) is fixed with the second seal ring (12).
5. outlet valve according to claim 1 is compressed into the air displacement amplifying device, it is characterized in that: described pressure release micropore (10) is opened on valve body (2) right flank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708670 CN203023559U (en) | 2012-12-20 | 2012-12-20 | Vent valve pressure-possessed air intake and exhaust quantity magnifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708670 CN203023559U (en) | 2012-12-20 | 2012-12-20 | Vent valve pressure-possessed air intake and exhaust quantity magnifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023559U true CN203023559U (en) | 2013-06-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708670 Expired - Lifetime CN203023559U (en) | 2012-12-20 | 2012-12-20 | Vent valve pressure-possessed air intake and exhaust quantity magnifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023559U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032579A (en) * | 2012-12-20 | 2013-04-10 | 武汉大禹阀门股份有限公司 | Pressure air intake and exhaust volume amplifying device of exhaust valve |
-
2012
- 2012-12-20 CN CN 201220708670 patent/CN203023559U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032579A (en) * | 2012-12-20 | 2013-04-10 | 武汉大禹阀门股份有限公司 | Pressure air intake and exhaust volume amplifying device of exhaust valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |