CN201802693U - Normally closed pneumatic delayed reversing valve - Google Patents
Normally closed pneumatic delayed reversing valve Download PDFInfo
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- CN201802693U CN201802693U CN2010205029836U CN201020502983U CN201802693U CN 201802693 U CN201802693 U CN 201802693U CN 2010205029836 U CN2010205029836 U CN 2010205029836U CN 201020502983 U CN201020502983 U CN 201020502983U CN 201802693 U CN201802693 U CN 201802693U
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Abstract
The utility model relates to a normally closed pneumatic delayed reversing valve. The technical scheme provided by the utility model includes that the pneumatic delayed reversing valve comprises a delay module and a reversing module, and is characterized in that the delay module comprises an upper valve body, an air chamber is disposed in the upper valve body, an air-inlet-adjustable throttle valve and an exhaust-adjustable throttle valve are mounted on the upper valve body, an air inlet inner cavity of the air-inlet-adjustable throttle valve is communicated with the air chamber through an air inlet throttle hole arranged on the air inlet inner cavity, and is further communicated with the external through an air inlet control hole arranged on the wall of the air inlet inner cavity, an exhaust inner cavity of the exhaust-adjustable throttle valve is communicated with the air chamber through an exhaust throttle hole arranged on the exhaust inner cavity, and is communicated with the external through an air exhaust control hole disposed on the wall of the exhaust inner cavity, and an air hole communicated with the reversing module is arranged on the air chamber. The normally closed pneumatic delayed reversing valve is smart and reasonable in structure, wider in delay time control range, high in delay precision and lower in processing precision and inflow air filtering precision requirements.
Description
Technical field
The utility model relates to a kind of time control valve that is applicable in Pneumatic Transmission and the control, specifically is the pneumatic time-delay change valve of a kind of Normally closed type.
Background technique
Time-delay change valve is used for the turn around time of control valve, and it has wide range of applications.Existing time-delay change valve mainly contains Electromagnetic Control, air pressure control, hand-guided by the control mode branch and machinery control is several, wherein adopts the pneumatic time-delay change valve structure of air pressure control simple relatively, uses more extensive.
Pneumatic time-delay change valve generally includes time delay module and inverting module, time delay module comprises adjustable restrictive valve and air chamber, the air chamber size has determined the control range of delay time: air chamber is big more, the time control range is big more, by regulating the flow area (throttle orifice size) of the adjustable restrictive valve that links to each other with air chamber, delay time can be realized its continuous control in minimum with between the maximum operating time.At present, the delay time of the pneumatic time-delay change valve on the market is shorter, and generally in 1 minute, delay precision is lower for delay time, and machining accuracy and inlet air filter precision require but very high.And in actual application, often needing to delay time surpasses pneumatic time-delay change valve more than 5 minutes even 30 minutes.The means that existing pneumatic time-delay change valve prolongs delay time, improve delay precision mainly are by the increase gas chamber volume, reduce the throttle orifice diameter and realize.Delay time requires long more, and gas chamber volume just requires big more; Delay precision requires high more, and the throttle orifice diameter just requires more little, and its machining accuracy also requires high more; And for avoiding stopping up throttle orifice, the filter precision of inlet air requires also high more.The filter precision of above-mentioned increase gas chamber volume, raising throttle orifice machining accuracy and raising inlet air all means the increase cost of production, and increase gas chamber volume and also can cause the volume of time-delay change valve and installing space thereof to increase, difficulty is installed even can't uses in some occasion.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of structure ingenious rational pneumatic time-delay change valve, the delay time control range broad of this time-delay change valve, the delay precision height, machining accuracy and inlet air filter precision require lower.
The technological scheme that provides according to the utility model: described pneumatic time-delay change valve comprises time delay module and inverting module; It is characterized in that: described time delay module comprises upper valve body, is provided with air chamber in the upper valve body, and adjustable air intake throttle valve and adjustable exhaust shutter are installed on the upper valve body; The air inlet inner chamber of described adjustable air intake throttle valve is connected with air chamber by the air inlet restriction hole which is provided with on the one hand, and the control air inlet hole that is provided with by the air inlet internal chamber wall communicates with the external world on the other hand; The exhaust inner chamber of described adjustable exhaust shutter is connected with air chamber by the vent orifice which is provided with on the one hand, and the control air vents that is provided with by the exhaust internal chamber wall communicates with the external world on the other hand; Offer the pore that is connected with inverting module on the described air chamber.
As further improvement of the utility model, described inverting module is the Normally closed type inverting module.
As further improvement of the utility model, described Normally closed type inverting module comprises valve body down, and following valve body and upper valve body are connected and fixed and are one; Be provided with spool chamber, outlet chamber, air-inlet cavity from top to bottom in the following valve body; Spool chamber is connected with the external world by the valve body exhaust port; Spool is contained in the spool chamber, and spool is provided with valve core piston, and spool chamber is divided into upper valve core chamber and lower valve core chamber by valve core piston, and the pore that the upper valve core chamber is offered by the air chamber bottom is connected with air chamber, and the lower valve core chamber is connected with the valve body exhaust port by through hole; Outlet chamber is connected with the pressurized air delivery outlet; The spool lower end is stretched in the outlet chamber, and the spool underpart is concaved with blind hole, offers the spool exhaust port on the blind pore wall, and when spool was positioned at upper limit position, outlet chamber was connected with the valve body exhaust port by the spool exhaust port; Air-inlet cavity is connected with the pressurized air input hole; Be provided with position limit socket between air-inlet cavity and the outlet chamber, second spring and baffle plate are housed in the air-inlet cavity, second spring, one end is connected the air-inlet cavity bottom, the second spring the other end is connected on the baffle plate, under nature, on position limit socket, air-inlet cavity and outlet chamber seal baffle plate by second spring compression; First spring is housed in the blind hole on the described spool, and the two ends of first spring offset with spool blind hole bottom and baffle plate upper surface respectively.
As further improvement of the utility model, the top of described spool is provided with cushion pad.
As further improvement of the utility model, but the spring pretension bolt of spinning in and out is equipped with in the bottom of described air-inlet cavity, and described second spring is connected on the spring pretension bolt, can regulate decrement by the spring pretension bolt.
The utility model compared with prior art, advantage is:
(1), time delay module of the present utility model comprises adjustable air intake throttle valve and adjustable exhaust shutter, the adjustable air intake throttle valve is in air inlet, adjustable exhaust shutter is in exhaust process, the part air is discharged in the air chamber, setting up in the air chamber when the required adjustable exhaust shutter of commutation pressure ratio of commutation is closed needs the longer time, also is that delay time prolongs.
(2), adjustable restrictive valve of the present utility model can adopt bigger throttle orifice diameter, obtain and the identical delay time of existing pneumatic time-delay change valve, big throttle orifice diameter just means that also the requirement on machining accuracy of throttle orifice reduces, and also reduces the air-filtering required precision.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred embodiment.
Description of reference numerals: 1-upper valve body, 2-adjustable air intake throttle valve, 2a-air inlet inner chamber, 2b-air inlet restriction hole, the 3-air chamber, the 4-pore, the 5-spool chamber, 5a-upper valve core chamber, 5b-lower valve core chamber, the 6-spool, 6a-valve core piston 7-cushion pad, the adjustable exhaust shutter of 8-, 8a-exhaust inner chamber, the 8b-vent orifice, 9-controls air vents, the 10-through hole, 11-valve body exhaust port, 12-spool exhaust port, the 13-blind hole, 14-pressurized air delivery outlet, the 15-outlet chamber, 16-first spring, the 17-position limit socket, the 18-baffle plate, the 19-air-inlet cavity, 20-spring pretension bolt, 21-second spring, 22-construction bolt hole, 23-pressurized air input hole, valve body under the 24-, 25-control air inlet hole.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: the pneumatic time-delay change valve among the embodiment mainly is made up of time delay module and inverting module; Described time delay module comprises upper valve body 1, is provided with air chamber 3 in the upper valve body 1, and adjustable air intake throttle valve 2 and adjustable exhaust shutter 8 are installed on the upper valve body 1; The air inlet inner chamber 2a of described adjustable air intake throttle valve 2 is connected with air chamber 3 by the air inlet restriction hole 2b which is provided with on the one hand, and the control air inlet hole 25 that is provided with by air inlet inner chamber 2a wall communicates with the external world on the other hand; The exhaust inner chamber 8a of described adjustable exhaust shutter 8 is connected with air chamber 3 by the vent orifice 8b which is provided with on the one hand, and the control air vents 9 that is provided with by exhaust inner chamber 8a wall communicates with the external world on the other hand; Offer the pore 4 that is connected with inverting module on the described air chamber 3.
As shown in Figure 1, the inverting module among the embodiment is the Normally closed type inverting module, and it comprises valve body 24 down, and following valve body 24 is connected and fixed with upper valve body 1 and is one; Be provided with spool chamber 5, outlet chamber 15, air-inlet cavity 19 in the following valve body 24 from top to bottom; Spool chamber 5 is connected with the external world by valve body exhaust port 11; Spool 6 is contained in the spool chamber 5, spool 6 is provided with valve core piston 6a, spool chamber 5 is divided into upper valve core chamber 5a and lower valve core chamber 5b by valve core piston 6a, and the pore 4 that upper valve core chamber 5a offers by air chamber 3 bottoms is connected with air chamber 3, and lower valve core chamber 5b is connected with valve body exhaust port 11 by through hole 10; Outlet chamber 15 is connected with pressurized air delivery outlet 14; Spool 6 lower ends are stretched in the outlet chamber 15, and spool 6 underparts are concaved with blind hole 13, offer spool exhaust port 12 on blind hole 13 walls, and when spool 6 was positioned at upper limit position, outlet chamber 15 was connected with valve body exhaust port 11 by spool exhaust port 12; Air-inlet cavity 19 is connected with pressurized air input hole 23; Be provided with position limit socket 17 between air-inlet cavity 19 and the outlet chamber 15, second spring 21 and baffle plate 18 are housed in the air-inlet cavity 19, second spring, 21 1 ends are connected air-inlet cavity 19 bottoms, second spring, 21 the other ends are connected on the baffle plate 18, under nature, baffle plate 18 is pressed on the position limit socket 17 by second spring 21, air-inlet cavity 19 and outlet chamber 15 sealings; The two ends that first spring, 16, the first springs 16 are housed in the blind hole 13 on the described spool 6 offset with spool blind hole 13 bottoms and baffle plate 18 upper surfaces respectively.
As shown in Figure 1, during time-delay change valve work, spool 6 meetings slippage up and down in spool chamber 5, directly clash in order to prevent the spool 6 and the bottom of upper valve body 1, the utility model is provided with cushion pad 7 at the top of spool 6, not only improved the working life of spool 6, and made time-delay change valve work the time not send noise.
As shown in Figure 1, but the spring pretension bolt 20 of spinning in and out is equipped with in the bottom of described air-inlet cavity 19, and described second spring 21 is connected on the spring pretension bolt 20, and the decrement of second spring 21 can be regulated by spring pretension bolt 20.Can make Applicable scope of the present utility model bigger by the decrement of regulating second spring 21.
As shown in Figure 1, the described bottom of valve body 24 down is provided with to be used for fixing construction bolt of the present utility model hole 22 is installed.
Working principle of the present utility model and working procedure are as follows:
For the Normally closed type time-delay change valve, its commutation condition is: the commutation pressure in the time delay module air chamber 3 reach and are enough to promote spool 6 and move down, and promotion baffle plate 18 leaves position limit socket 17, make between pressurized air input hole 23 and the pressurized air delivery outlet 14 and be converted to connected state, make between valve body exhaust port 11 and the pressurized air delivery outlet 14 and be converted to closed state by connected state by closed state.The time of setting up the required commutation pressure of commutation in the air chamber 3 is long more, and delay time is just long more, therefore, can realize the adjusting of delay time by the flow area size of regulating adjustable air intake throttle valve 2 and adjustable exhaust shutter 8.
During concrete the application, at first adjustable air intake throttle valve 2 and adjustable exhaust shutter 8 are placed cut-off state, promptly the flow area of two throttle valve is zero; Regulate the adjusting bolt of adjustable exhaust shutter 8 then, open certain flow area, then regulate the adjusting bolt of adjustable air intake throttle valve 2, make the flow area of adjustable air intake throttle valve 2 greater than the flow area of adjustable exhaust shutter 8, the extent of the flow area between the two is by the delay time decision of needs.The difference of flow area is more little, and the delay time that can realize is long more.If required delay time is shorter, also adjustable exhaust shutter 8 can be placed cut-off state, only regulate the adjusting bolt of adjustable air intake throttle valve 2, make it open certain flow area.
After adjusting the flow area of regulating adjustable air intake throttle valve 2 and adjustable exhaust shutter 8, pressurized air feeds air-inlet cavity 19 via pressurized air input hole 23, the control air feeds air chamber 3 via control air inlet hole 25, continuous feeding along with the control air, air chamber 3 internal pressures raise gradually, after time-delay a period of time, when air chamber 3 internal pressures greater than first spring 16, the spring force of second spring 21, the frictional force of spool 6, and when acting on the baffle plate 18 the atmospheric pressure sum, commutation pressure is set up, spool 6 moves down and promotes baffle plate 18 by means of first spring 16 and moves down, and pressurized air input hole 23 is connected with pressurized air delivery outlet 14; Along with spool 6 moves down, spool exhaust port 12 staggers with valve body exhaust port 11, and outlet chamber 15 and 11 sealings of valve body exhaust port are finished commutation.
Claims (5)
1. the pneumatic time-delay change valve of Normally closed type comprises time delay module and inverting module; It is characterized in that: described time delay module comprises upper valve body (1), is provided with air chamber (3) in the upper valve body (1), and adjustable air intake throttle valve (2) and adjustable exhaust shutter (8) are installed on the upper valve body (1); The air inlet inner chamber (2a) of described adjustable air intake throttle valve (2) is connected with air chamber (3) by the air inlet restriction hole (2b) which is provided with on the one hand, and the control air inlet hole (25) that is provided with by air inlet inner chamber (2a) wall communicates with the external world on the other hand; The exhaust inner chamber (8a) of described adjustable exhaust shutter (8) is connected with air chamber (3) by the vent orifice (8b) which is provided with on the one hand, and the control air vents (9) that is provided with by exhaust inner chamber (8a) wall communicates with the external world on the other hand; Offer the pore (4) that is connected with inverting module on the described air chamber (3).
2. the pneumatic time-delay change valve of Normally closed type as claimed in claim 1 is characterized in that: described inverting module is the Normally closed type inverting module.
3. the pneumatic time-delay change valve of Normally closed type as claimed in claim 2 is characterized in that: described Normally closed type inverting module comprises valve body (24) down, and following valve body (24) is connected and fixed with upper valve body (1) and is one; Be provided with spool chamber (5), outlet chamber (15), air-inlet cavity (19) in the following valve body (24) from top to bottom;
Spool chamber (5) is connected with the external world by valve body exhaust port (11); Spool (6) is contained in the spool chamber (5), spool (6) is provided with valve core piston (6a), spool chamber (5) is divided into upper valve core chamber (5a) and lower valve core chamber (5b) by valve core piston (6a), the pore (4) that upper valve core chamber (5a) is offered by air chamber (3) bottom is connected with air chamber (3), and lower valve core chamber (5b) is connected with valve body exhaust port (11) by through hole (10);
Outlet chamber (15) is connected with pressurized air delivery outlet (14); Spool (6) lower end is stretched in the outlet chamber (15), spool (6) underpart is concaved with blind hole (13), offer spool exhaust port (12) on blind hole (13) wall, spool (6) is when being positioned at upper limit position, and outlet chamber (15) is connected with valve body exhaust port (11) by spool exhaust port (12);
Air-inlet cavity (19) is connected with pressurized air input hole (23); Be provided with position limit socket (17) between air-inlet cavity (19) and the outlet chamber (15), second spring (21) and baffle plate (18) are housed in the air-inlet cavity (19), second spring (21) one ends are connected air-inlet cavity (19) bottom, second spring (21) the other end is connected on the baffle plate (18), under nature, baffle plate (18) is pressed on the position limit socket (17) by second spring (21), air-inlet cavity (19) and outlet chamber (15) sealing; In the blind hole (13) on the described spool (6) first spring (16) is housed, the two ends of first spring (16) offset with spool blind hole (13) bottom and baffle plate (18) upper surface respectively.
4. the pneumatic time-delay change valve of Normally closed type as claimed in claim 3 is characterized in that: the top of described spool (6) is provided with cushion pad (7).
5. the pneumatic time-delay change valve of Normally closed type as claimed in claim 3, it is characterized in that: described air-inlet cavity (19) but the bottom spring pretension bolt (20) of spinning in and out is housed, described second spring (21) is connected on the spring pretension bolt (20), and the decrement of second spring (21) can be regulated by spring pretension bolt (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205029836U CN201802693U (en) | 2010-08-21 | 2010-08-21 | Normally closed pneumatic delayed reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205029836U CN201802693U (en) | 2010-08-21 | 2010-08-21 | Normally closed pneumatic delayed reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802693U true CN201802693U (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205029836U Expired - Lifetime CN201802693U (en) | 2010-08-21 | 2010-08-21 | Normally closed pneumatic delayed reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802693U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322456A (en) * | 2011-08-30 | 2012-01-18 | 无锡气动技术研究所有限公司 | Micro-pressure pneumatic control reverse valve with adjustable control pressure |
| CN107965726A (en) * | 2015-09-09 | 2018-04-27 | 安溪县中磊设备制造有限公司 | A kind of control device with wind power generation function LED street lamp |
| CN109466267A (en) * | 2018-12-04 | 2019-03-15 | 广东机电职业技术学院 | Vehicular air bag height adjustment device |
| CN109882596A (en) * | 2017-12-06 | 2019-06-14 | 盾安环境技术有限公司 | A kind of pneumatic proportional valve based on MEMS micro-fluidic chip |
-
2010
- 2010-08-21 CN CN2010205029836U patent/CN201802693U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322456A (en) * | 2011-08-30 | 2012-01-18 | 无锡气动技术研究所有限公司 | Micro-pressure pneumatic control reverse valve with adjustable control pressure |
| CN102322456B (en) * | 2011-08-30 | 2013-08-07 | 无锡气动技术研究所有限公司 | Micro-pressure pneumatic control reverse valve with adjustable control pressure |
| CN107965726A (en) * | 2015-09-09 | 2018-04-27 | 安溪县中磊设备制造有限公司 | A kind of control device with wind power generation function LED street lamp |
| CN109882596A (en) * | 2017-12-06 | 2019-06-14 | 盾安环境技术有限公司 | A kind of pneumatic proportional valve based on MEMS micro-fluidic chip |
| CN109466267A (en) * | 2018-12-04 | 2019-03-15 | 广东机电职业技术学院 | Vehicular air bag height adjustment device |
| CN109466267B (en) * | 2018-12-04 | 2023-10-20 | 广东机电职业技术学院 | Vehicle air bag height adjusting device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
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| CX01 | Expiry of patent term |