CN201764006U - Normally open type pneumatic delay reversing valve - Google Patents
Normally open type pneumatic delay reversing valve Download PDFInfo
- Publication number
- CN201764006U CN201764006U CN2010205026607U CN201020502660U CN201764006U CN 201764006 U CN201764006 U CN 201764006U CN 2010205026607 U CN2010205026607 U CN 2010205026607U CN 201020502660 U CN201020502660 U CN 201020502660U CN 201764006 U CN201764006 U CN 201764006U
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- spool
- spring
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Abstract
The utility model relates to a normally open type pneumatic delay reversing valve. The technical scheme includes that the pneumatic delay reversing valve comprises a delay module and a reversing module. The pneumatic delay reversing valve is characterized in that the delay module includes an upper valve body, an air chamber is arranged inside the upper valve body, and an adjustable air inlet throttle valve and an adjustable air discharging throttle valve are mounted on the upper valve body. On one hand, an air inlet inner cavity of the adjustable air inlet throttle valve is communicated with the air chamber via an air inlet throttle hole arranged on the adjustable air inlet throttle valve; on the other hand, the air inlet inner cavity is communicated with the outside via an air control inlet hole arranged on the wall of the air inlet inner cavity. On one hand, an air discharging inner cavity of the adjustable air discharging throttle valve is communicated with the air chamber via an air discharging throttle hole arranged on the adjustable air discharging throttle valve; on the other hand, the air discharging inner cavity is communicated with the outside via an air control discharging hole arranged on the wall of the air discharging inner cavity, and an air hole communicated with the reversing module is arranged on the air chamber. The normally open type pneumatic delay reversing valve has the advantages of ingenious and reasonable structure, wider delay time control range, high delay precision and lower requirements on processing precision and inlet air filtering precision.
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 a kind of pneumatic time-delay change valve open in usual.
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 an inverting module open in usual.
As further improvement of the utility model, described inverting module open in usual 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 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 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 perisporium is provided with circular groove, and circular groove is connected with exhaust port, and when spool was displaced downwardly to certain position, exhaust port was connected with the pressurized air delivery outlet by circular groove; 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, the interstage sleeve of center drilling is housed in the position limit socket; Second spring is housed in the air-inlet cavity, and second spring, one end is connected the air-inlet cavity bottom, and the second spring the other end and interstage sleeve offset, and under nature, on position limit socket, air-inlet cavity communicates with outlet chamber interstage sleeve by second spring compression; Be set with first spring on the described interstage sleeve, the two ends of first spring offset with spool lower end and position limit socket 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, the 11-exhaust port, the 12-circular groove, valve body under the 13-, 14-pressurized air delivery outlet, the 15-outlet chamber, 16-first spring, the 17-position limit socket, the 18-interstage sleeve, the 19-air-inlet cavity, 20-spring pretension bolt, 21-second spring, 22-construction bolt hole, 23-pressurized air input hole, 24-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 24 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 an inverting module open in usual, and it comprises valve body 13 down, and following valve body 13 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 13 from top to bottom; Spool chamber 5 is connected with the external world by 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 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 perisporiums are provided with circular groove 12, and circular groove 12 is connected with exhaust port 11, and when spool 6 was displaced downwardly to certain position, exhaust port 11 was connected with pressurized air delivery outlet 14 by circular groove 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, the interstage sleeve 18 of center drilling is housed in the position limit socket 17; Second spring 21 is housed in the air-inlet cavity 19, second spring, 21 1 ends are connected air-inlet cavity 19 bottoms, and second spring, 21 the other ends are connected on the interstage sleeve 18, under nature, interstage sleeve 18 is pressed on the position limit socket 17 by second spring 21, and air-inlet cavity 19 communicates with outlet chamber 15; The two ends that are set with first spring, 16, the first springs 16 on the described interstage sleeve 18 offset with spool 6 lower ends and position limit socket 17 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 13 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 time-delay change valve open in usual, its commutation condition is: the commutation pressure in the time delay module air chamber 3 reach and are enough to promote that spool 6 is displaced downwardly to spool 6 bottoms and interstage sleeve 18 offsets, make between pressurized air input hole 23 and the pressurized air delivery outlet 14 and be converted to closed state, make between exhaust port 11 and the pressurized air delivery outlet 14 and be converted to connected state by closed state by connected 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 24, 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 the frictional force of the spring force of first spring 16, spool 6 and when acting on spool 6 bottom atmospheric pressure sums, commutation pressure is set up, spool 6 moves down, and is communicated with exhaust port 11 until pressurized air delivery outlet 14; Along with spool 6 moves down, spool 6 bottoms and interstage sleeve 18 offset, and commutation is finished in sealing between pressurized air input hole 23 and the pressurized air delivery outlet 14.
Claims (5)
1. a 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 (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 (24) 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. pneumatic time-delay change valve as claimed in claim 1 is characterized in that: described inverting module is an inverting module open in usual.
3. pneumatic time-delay change valve as claimed in claim 2 is characterized in that: described inverting module open in usual comprises valve body (13) down, and following valve body (13) 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 (13) from top to bottom;
Spool chamber (5) is connected with the external world by 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 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) perisporium is provided with circular groove (12), circular groove (12) is connected with exhaust port (11), and spool (6) is when being displaced downwardly to certain position, and exhaust port (11) is connected with pressurized air delivery outlet (14) by circular groove (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), the interstage sleeve (18) of center drilling is housed in the position limit socket (17); Second spring (21) is 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 interstage sleeve (18), under nature, interstage sleeve (18) is pressed on the position limit socket (17) by second spring (21), and air-inlet cavity (19) communicates with outlet chamber (15); Be set with first spring (16) on the described interstage sleeve (18), the two ends of first spring (16) offset with spool (6) lower end and position limit socket (17) upper surface respectively.
4. pneumatic time-delay change valve as claimed in claim 3 is characterized in that: the top of described spool (6) is provided with cushion pad (7).
5. pneumatic time-delay change valve 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 |
|---|---|---|---|
| CN2010205026607U CN201764006U (en) | 2010-08-21 | 2010-08-21 | Normally open type pneumatic delay reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205026607U CN201764006U (en) | 2010-08-21 | 2010-08-21 | Normally open type pneumatic delay reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764006U true CN201764006U (en) | 2011-03-16 |
Family
ID=43716611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205026607U Expired - Lifetime CN201764006U (en) | 2010-08-21 | 2010-08-21 | Normally open type pneumatic delay reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633250A (en) * | 2015-02-06 | 2015-05-20 | 总装备部工程设计研究总院 | Low-temperature pneumatic valve time delay unit |
| CN106195327A (en) * | 2016-08-17 | 2016-12-07 | 浙江利百加泵阀科技有限公司 | Pneumatic cut-off reversal valve |
-
2010
- 2010-08-21 CN CN2010205026607U patent/CN201764006U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633250A (en) * | 2015-02-06 | 2015-05-20 | 总装备部工程设计研究总院 | Low-temperature pneumatic valve time delay unit |
| CN104633250B (en) * | 2015-02-06 | 2017-02-22 | 总装备部工程设计研究总院 | Low-temperature pneumatic valve time delay unit |
| CN106195327A (en) * | 2016-08-17 | 2016-12-07 | 浙江利百加泵阀科技有限公司 | Pneumatic cut-off reversal 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: 20110316 |