CN100582533C - Pneumatic control proportioning time-delay change valve - Google Patents
Pneumatic control proportioning time-delay change valve Download PDFInfo
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- CN100582533C CN100582533C CN 200710308318 CN200710308318A CN100582533C CN 100582533 C CN100582533 C CN 100582533C CN 200710308318 CN200710308318 CN 200710308318 CN 200710308318 A CN200710308318 A CN 200710308318A CN 100582533 C CN100582533 C CN 100582533C
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Abstract
The invention provides a pneumatic control proportion time-delay reversing valve which mainly relates to the field of medical appliance. The pneumatic control reversing valve comprises an inner cavity with a main valve core component (5), a first end with a first air chamber (3a), a second end with a second air chamber (6a), a first throttle valve (1) respectively communicated with the first air chamber (3a) and the second air chamber (6a); a second throttle valve (2) respectively communicated with the first air chamber (3a) and the atmosphere; an air inlet port (9a) which is communicated with the second air chamber (6a) and connected with an external air source as well as an air outlet port (10a) which is communicated with the second air chamber (6a) and the first throttle valve (1). The pneumatic control proportion time-delay reversing valve overcomes the defects of an electric control reversing valve, a manual control reversing valve and a mechanical control reversing valve as well as can continuously adjust the reversing frequency and the on-off time ratio of the pneumatic control proportion time-delay reversing valve in a simple mode.
Description
Technical field
The present invention relates to a kind of Pneumatic control proportioning time-delay reversing arrangement, relate more specifically to the pneumatic valve that a kind of time-delay in proportion provides signal or pulse.
Background technique
Time-delay change valve is mainly used in the commutating frequency and the make-and-break time ratio of control gaseous, for example, if be used in medical field, when being provided in it on respiratory machine, its be mainly used in control the patient respiration rate (just, the gas commutating frequency) and breathing time than (gas make-and-break time ratio just).At present, the control mode of time-delay change valve commonly used has following several: Electromagnetic Control, air pressure control, hand-guided and machinery control, and all there is certain technical problem in these several control modes: the time-delay change valve of Electromagnetic Control need provide external power supply; The time-delay change valve automaticity of hand-guided is too low, be difficult to accurately control delay time, and frequency of utilization is low, movement speed is slow; The time-delay change valve of machinery control need promote the action of main valve plug assembly by the external force that cam, collision block or other mechanical structure provide, thereby realizes the time-delay commutation, and the required structure of this control mode is too complicated, and reliability is not high; And the time-delay reversing arrangement of the air pressure that adopts at present control can't be realized the continuous adjusting to the commutating frequency and the make-and-break time ratio of selector valve simultaneously, the delay time of gas output is realized by the size and the adjusting air inlet speed that change air chamber, if the variable volume of air chamber is excessive, then will certainly make the increase of selector valve overall volume or make structure become complicated, and practical application shows that the size that changes air chamber is very little to the influence of the make-and-break time ratio of change selector valve.
Therefore, need provide a kind of Pneumatic control proportioning time-delay change valve, it can realize the continuous adjusting of commutation frequency and make-and-break time ratio is controlled in simple mode.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of improved Pneumatic control proportioning time-delay change valve, it has not only overcome shortcoming automatically controlled, manual and machinery control selector valve, and can realize regulating continuously the commutating frequency and the make-and-break time ratio of Pneumatic control proportioning time-delay change valve in simple mode.
At above-mentioned technical problem, according to the invention provides a kind of Pneumatic control proportioning time-delay change valve, it comprises inner chamber, is provided with the main valve plug assembly in the inner chamber, and it also comprises: first end with first air chamber; Second end with second air chamber; The first throttle valve has first port that is connected with first air chamber, and second port that is connected with second air chamber; Second throttle valve has first port that is connected with first air chamber, and second port that is connected with atmosphere; The air inlet port is connected with second air chamber, and is connected to external air source; With the port of giving vent to anger, be connected with second port of second air chamber and first throttle valve.
Further, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein inner chamber has first cavity portion of first internal diameter and the second cavity portion of second internal diameter, and first internal diameter is greater than second internal diameter; The main valve plug assembly has first piston portion that matches with the first cavity portion and second piston portion that matches with the second cavity portion.
Preferably, Pneumatic control proportioning time-delay change valve according to the present invention comprises bonnet, valve body and valve gap, and wherein: bonnet is connected in an end of valve body, common first air chamber that forms first end of bonnet, main valve plug assembly and valve body; First port of first throttle valve is connected in bonnet, and communicates with first air chamber; Second throttle valve is formed in the sidewall of bonnet; And valve gap is connected in the other end of valve body, common second air chamber that forms second end of valve gap, main valve plug assembly and valve body.
Preferably, also comprise the 3rd throttle valve and connecting tube according to Pneumatic control proportioning time-delay change valve of the present invention, wherein: first port of the 3rd throttle valve is connected in valve body, and communicates with second air chamber in the valve body; Second port of the 3rd throttle valve is connected in second port of first throttle valve by connecting tube.
Preferably, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein the main valve plug assembly comprises piston cap, piston, spring and valve rod, and wherein: piston cap is arranged in the piston hermetically, and the two forms the first piston portion of main valve plug assembly jointly; Valve rod forms second piston portion of main valve plug assembly, and the one end is connected in first piston portion; Spring is arranged on internal piston, between piston cap and valve rod, and has the initial bias voltage amount.
Preferably, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein the main valve plug assembly also comprises screw and packing ring, and packing ring utilizes the end of screw at valve rod.
Preferably, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein be provided with Gask-O-Seal between valve gap and the valve body.
Preferably, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein the top of valve rod is formed with cylindrical closure part, the sealing gasket that this closure part shutoff is above-mentioned.
Preferably, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein second throttle valve has the spool of regulating self aperture, and this spool is arranged in the sidewall of bonnet in the mode that is threaded; Second port of second throttle valve is formed on the sidewall of bonnet.
Further, according to Pneumatic control proportioning time-delay change valve of the present invention, wherein the gas flow of discharging from first air chamber by second throttle valve in the unit time is much smaller than the gas flow of discharging from first air chamber by the 3rd throttle valve.
The present invention has following technique effect:
First, Pneumatic control proportioning time-delay change valve in the technology can not be simultaneously carries out continuous control to the commutating frequency and the make-and-break time ratio of valve before, Pneumatic control proportioning time-delay change valve according to the present invention has the first throttle valve and second throttle valve, can realize continuous control in mode simply by these two parts to the commutating frequency and the make-and-break time ratio of Pneumatic control proportioning time-delay change valve, wherein can control the speed of in air chamber, inflating, thereby regulate the commutating frequency of selector valve by the aperture of regulating the first throttle valve; The gas that can change in first air chamber by the aperture of regulating second throttle valve overflows speed, has so just changed the inflation and the deflation time of air chamber in the bonnet, thereby changes the make-and-break time ratio of selector valve, realizes the continuous adjusting to it;
Second, the delay time of the Pneumatic control proportioning time-delay change valve in the technology mainly relies on the size that changes first air chamber and regulates the air inlet speed and realize before, this requires the variable volume of first air chamber should be enough big on the one hand, thereby make that the overall volume of valve is excessive, need constantly to regulate the air feed speed of external air source on the other hand, and first air chamber in the Pneumatic control proportioning time-delay change valve of the present invention only has very little change in the process of opening of valves and cut-out, can significantly reduce the overall volume of valve like this, and the spring assembly in the main valve plug assembly among the present invention can be realized the adjusting to delay time easily.
The 3rd, have spring assembly according to the main valve plug assembly of Pneumatic control proportioning time-delay change valve of the present invention, utilize this spring assembly can realize flexible self adaption to main valve plug assembly two ends gas pressure;
The 4th, Pneumatic control proportioning time-delay change valve according to the present invention need not external power supply and drives, and movement speed is rapid, and delay time can accurately be controlled.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the present invention.These accompanying drawings illustrate some embodiments of the present invention, and are used for illustrating principle of the present invention with specification.Identical in the accompanying drawings parts are represented with identical label.Wherein:
Fig. 1 is the structural representation of Pneumatic control proportioning time-delay change valve according to the preferred embodiment of the invention;
Fig. 2 is the structural representation of the main valve plug assembly of the Pneumatic control proportioning time-delay change valve among Fig. 1.
Embodiment
Preferred embodiment with reference to the accompanying drawings describes the concrete real-time mode according to Pneumatic control proportioning time-delay change valve of the present invention.
At first see figures.1.and.2 to the concrete structure and the constituted mode of Pneumatic control proportioning time-delay change valve are described in detail according to the preferred embodiment of the invention.Fig. 1 is the structural representation of Pneumatic control proportioning time-delay change valve according to the preferred embodiment of the invention, and Fig. 2 is the structural representation of the main valve plug assembly of the Pneumatic control proportioning time-delay change valve among Fig. 1.By shown in Figure 1, the Pneumatic control proportioning time-delay change valve of this preferred embodiment comprises: first throttle valve 1, second throttle valve 2, bonnet 3, main valve plug assembly 5, valve body 6, valve gap 9, the 3rd throttle valve 10 and connecting tube 11.
Particularly, first throttle valve 1 is fixedly connected on bonnet 3, and the two is preferably and is threaded, first throttle valve 1 valve port 11, first throttle valve 1 is connected with an end of connecting tube 11 by the second port one b, and the other end of connecting tube 11 is connected (as described below) with the second port one 0c of the 3rd throttle valve 10.
Further, the inner chamber of valve body 6 is equipped with main valve plug assembly 5, and main valve plug assembly 5 can slide in the inner chamber of valve body 6 by along continuous straight runs.Wherein inner chamber comprises the second chamber 6b of large diameter first chamber 6a and minor diameter, and main valve plug assembly 5 has the second piston portion 5b that cooperates the 5a of first piston portion of slip and cooperate slip with the second chamber 6b with the first chamber 6a.Be provided with a plurality of seal rings between the cavity inner wall of main valve plug assembly 5 and valve body 6, realized the cavity inner wall of valve body 6 and the sealing between the main valve plug assembly 5 by using above-mentioned seal ring.The other end of valve body 6 is installed with valve gap 9, the two is preferably and is threaded, be provided with sealing gasket 7 between the mounting end of valve gap 9 and the valve body 6, be used to realize the sealing between valve body 6 and the valve gap 9, and between the mounting end of valve gap 9 and valve body 6, also be provided with locking nut 8, be used to lock being connected of valve body 6 and valve gap 9, it is loosening to prevent to be threaded.
The 3rd throttle valve 10 is fixedly connected on the sidewall of valve body 6 by its first port one 0b, and the two is preferably and is threaded.In addition, the 3rd throttle valve 10 also has the port of the giving vent to anger 10a and the first port one 0b, and the port 10a that wherein gives vent to anger links to each other with the external circuit, and the first port one 0b links to each other with an end of connecting tube 11, thereby is communicated with first throttle valve 1 by connecting tube 11.
Above-mentioned is exactly the concrete structure and the composition mode of Pneumatic control proportioning time-delay change valve according to the preferred embodiment of the invention, continues below with reference to Fig. 2 the formation of main valve plug assembly 5 to be elaborated.Main valve plug assembly 5 is installed in the inside of valve body 6, and can in valve body 6, slide by along continuous straight runs, this main valve plug assembly 5 is a piston structure, it is mainly by constituting with the bottom: piston cap 51, piston 52, spring 53, sunk screw 54, packing ring 55 and valve rod 56, above-mentioned parts have been formed whole main valve plug assembly 5, and piston cap 51 and piston 52 formed the 5a of first piston portion and valve rod 56 just as the second piston portion 5b.Wherein piston cap 51 be fixedly mounted on piston 52 in, adopt the seal ring sealing between the two; Piston 52 is socketed in an end of valve rod 56, this end of valve rod 56 is provided with packing ring 55 and is used for preventing that valve rod 56 from deviating from from piston 52, this packing ring 55 preferably is fixed on valve rod 56 with sunk screw 54 and is socketed on the end in the piston 52, valve rod 56 can along continuous straight runs in the slides within of piston 52; It is inner and between piston cap 51 and valve rod 56 that spring 53 is provided with piston 52, and spring 53 has the initial compression amount; The axial region of valve rod 56 preferably is formed with circular groove, is provided with O-ring seal in this circular groove, is used for sealing between valve body 6 inwalls and the valve rod 56; Another end of valve rod 56 (not being socketed in that end in the piston 52) can shutoff in the movement process of main valve plug assembly 5 on sealing gasket 7, thereby cut off gas.Above-mentioned is exactly the concrete formation of the piston assembly 5 of this preferred embodiment.
Still see figures.1.and.2, to the concrete working principle and the operating process of Pneumatic control proportioning time-delay change valve are elaborated according to the preferred embodiment of the invention.
The air inlet port 9a of valve gap 9 links to each other with the extraneous gas input device, when from air-flow at the air inlet port 9a of valve gap 9 input certain pressure, this air communication crosses valve gap 9 and sealing gasket 7 enters among the second air chamber 6a of valve body 6 inner chambers, and then enter the 3rd throttle valve 10 by the first port one 0b of the 3rd throttle valve, air-flow can be outputed to respectively in two current paths by the 3rd throttle valve 10: the port 10a that gives vent to anger that wherein a part of air communication is crossed the 3rd throttle valve 10 outputs in the external circuit as airflow signal, the size of this airflow signal can be regulated by the aperture of regulating the 3rd throttle valve 10, the gas flow of the big more then output of aperture is also big more, thereby also big more from the airflow signal of the port 10a output of giving vent to anger; The second port one 0c that another part air communication is crossed the 3rd throttle valve 10 flows into connecting tube 11, and then by among the first air chamber 3a in the first port one a inflow bonnet 3 of first throttle valve.Along with gas constantly enters the first air chamber 3a, its pressure inside constantly raises, thereby the pressure that acts on the piston cap 52 of main valve plug assembly 5 is also big more, when this pressure acts on the pressure of valve rod 56 ends of main valve plug assembly 5 greater than the gas from the air inlet port 9a of valve gap 9 input, it will promote piston cap 51 and slide to the right together with piston 52 level in the inner chamber of valve body 6, thereby pressure spring 53 makes it produce flexible bias pressure, this flexible bias pressure acts on the end of valve rod 56 of main valve plug assembly 5, thereby valve rod 56 levels that promote main valve plug assembly 5 are slided to the right.Thereby, the cylindrical closure part on the top of valve rod 56 cut off the connected state of valve gap 9 with the second air chamber 6a of valve body 6 when just blocking sealing gasket 7, so just cut off the air-flow input to above-mentioned two current paths, the result who is brought is exactly: do not have gas to continue to output in the (not shown) of external circuit by the port 10a that gives vent to anger of the 3rd throttle valve 10 on the one hand again; Also not having gas to continue the second port one 0c by the 3rd throttle valve 10 more on the other hand enters connecting tube 11 and then enters among the first air chamber 3a in the bonnet 3 by first throttle valve 1.Along with these two current paths are cut off, the 3rd throttle valve 10 stops to external circuit output gas flow signal on the one hand, and gas residual among the second air chamber 6a can be discharged fast by the 3rd throttle valve 10 and then by the rapid escape valve (not shown) that links to each other with the 3rd throttle valve 10, should note, this rapid escape valve can not be input to gas in the external circuit, thereby the air-flow of this moment can be as the output gas flow signal; On the other hand, the gas among the first air chamber 3a can enter connecting tube 11 and then enter the 3rd throttle valve 10 by first throttle valve 1, thereby still is discharged to outside this Pneumatic control proportioning time-delay change valve by rapid escape valve.
Gas pressure in the first air chamber 3a is reduced to certain value, just less than the time by the stream pressure value of the air inlet port 9a of valve gap 9 input, the valve rod 56 that can be promoted main valve plug assembly 5 by the air-flow of valve gap 9 input makes its level to left movement, thereby valve rod 56 makes spring 53 compressions produce biasing force and then promotes piston cap 51 and piston 52 slip left together, along with main valve plug assembly 5 integral body to left movement, it just is returned to initial position gradually and leaves by the sealing gasket 7 of its shutoff, the Pneumatic control proportioning time-delay change valve of this sample preferred embodiment just has been unlocked once more, air-flow by valve gap 9 inputs can enter the second air chamber 6a once more, and then enter the 3rd throttle valve 10, by the 3rd throttle valve 10 just can be once more to external circuit output gas flow signal and another part gas is entered among the first air chamber 3a by first throttle valve 1.When the pressure of the first air chamber 3a raise once more gradually, just can promote main valve plug assembly 5 again moved right and then blocks once more sealing gasket 7.The Pneumatic control proportioning time-delay change valve of this preferred embodiment has just been realized the output of pulsing airflow signal by the to-and-fro motion of main valve plug assembly 5 like this, in the manner described above.
After having described according to the preferred embodiment of the invention the specific operation process of Pneumatic control proportioning time-delay change valve, further to how realizing that commutating frequency and the make-and-break time ratio of controlling this Pneumatic control proportioning time-delay change valve simultaneously describe.
At first, the size of the aperture of the commutating frequency of this Pneumatic control proportioning time-delay change valve and first throttle valve 1, the first air chamber 3a volume is relevant with the stream pressure of input, under the volume and the big or small certain situation of input stream pressure of the first air chamber 3a, the commutating frequency of this Pneumatic control proportioning time-delay change valve can be regulated continuously by the aperture of regulating first throttle valve 1.Should note, here the meaning of " commutating frequency " is meant the number of times that Pneumatic control proportioning time-delay change valve cuts off and opens in the unit time, just, for example when this Pneumatic control proportioning time-delay change valve is arranged in the respiratory machine, commutating frequency just with the unit time in the patient exhale and air-breathing number of times corresponding, if commutating frequency is big more, illustrates that then patient's breathing is rapid more, otherwise illustrate that then patient respiratory is mild more.Needs of patients at different symptoms adopts different commutating frequencies.When this Pneumatic control proportioning time-delay change valve was opened, from the certain air-flow of air inlet port 9a incoming pressure of valve gap 9, when the aperture of first throttle valve 1 was big, it is just very fast that air-flow enters the speed of the first air chamber 3a, thereby aeration speed is also very fast; When this Pneumatic control proportioning time-delay change valve was cut off, because the aperture of first throttle valve 1 is big, it is very fast that then air-flow flows out the speed of the first air chamber 3a, thereby the speed of venting is fast.Because the inflation of first air chamber 3a venting speed is fast, then the to-and-fro motion number of times of main valve plug assembly 5 is just many more in the unit time, correspondingly the number of times of cut-out of this Pneumatic control proportioning time-delay change valve and unlatching is also many more, and the commutating frequency of this sample Pneumatic control proportioning time-delay change valve is just big more.Otherwise if the aperture of first throttle valve 1 is less, then the commutating frequency of this Pneumatic control proportioning time-delay change valve is just more little.Like this, just realized continuous adjusting by the aperture of regulating first throttle valve 1 to the commutating frequency of this Pneumatic control proportioning time-delay change valve.
Secondly, the regulative mode to the make-and-break time ratio of this Pneumatic control proportioning time-delay change valve describes.Should note, " make-and-break time ratio " here looks like and is meant each cut-out of this Pneumatic control proportioning time-delay change valve and open-interval ratio, just, for example, when this gas control time-delay change valve is installed in the respiratory machine, the each air-breathing and time ratio of exhaling of patient, if make-and-break time is bigger, patient's inspiratory duration length then is described and the expiratory duration weak point, if and make-and-break time is smaller, illustrate then that patient's inspiratory duration is short and expiratory duration is long, at the different make-and-break time ratio of needs of patients selection of different symptoms.Continuous adjusting to the make-and-break time ratio of the Pneumatic control proportioning time-delay change valve of this preferred embodiment realizes by regulating second throttle valve 2.In the process that aforementioned Pneumatic control proportioning time-delay change valve cuts off and opens, gas among the first air chamber 3a can have by the valve port 2a on second throttle valve 2 in bonnet 3 sidewalls and then bonnet 3 sidewalls that pass through all the time and overflows, this gas flow that overflows is very little with respect to the throughput of input, and the aperture of the spool 2c of this size of overflowing gas flow by regulating second throttle valve 2 is controlled.When air-flow flows among the first air chamber 3a, because air-flow also can have part to overflow simultaneously by the second port 2b of second throttle valve 2, if the aperture of second throttle valve 2 is bigger, the gas flow that then overflows is also bigger, the inflationtime of such first air chamber 3a is just longer, and then the opening time of this Pneumatic control proportioning time-delay change valve is also longer; When not having air-flow to be input among the first air chamber 3a, the first air chamber 3a just is in deflated state, but at this moment gas is mainly discharged by the 3rd throttle valve 10, and the gas of discharging from second port of second throttle valve 2 relatively seldom thereby can not have appreciable impact to deflation time.Like this, the make-and-break time ratio of this Pneumatic control proportioning time-delay change valve is just bigger.Otherwise, when the aperture of second throttle valve 2 hour, the make-and-break time ratio of this Pneumatic control proportioning time-delay change valve is just less.By above-mentioned mode, just realized continuous adjusting, and the regulation range of make-and-break time ratio is bigger to make-and-break time ratio, it is reliable to be active in one's movements.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. Pneumatic control proportioning time-delay change valve comprises: inner chamber, be provided with main valve plug assembly (5) in the described inner chamber, and it is characterized in that, also comprise:
First end has first air chamber (3a);
Second end has second air chamber (6a);
First throttle valve (1) has first port (1a) that is connected with described first air chamber (3a), and second port (1b) that is connected with described second air chamber (6a);
Second throttle valve (2) has first port (2a) that is connected with described first air chamber (3a), and second port (2b) that is connected with atmosphere;
Air inlet port (9a), and have connected state between described second air chamber (6a) and cut off connected state, and be connected to external air source;
The port (10a) of giving vent to anger is connected with second port (1b) of described second air chamber (6a) and described first throttle valve (1),
Wherein, described inner chamber has first cavity portion (61) of first internal diameter and the second cavity portion (62) of second internal diameter, and described first internal diameter is greater than described second internal diameter;
Described main valve plug assembly (5) is positioned between described first air chamber (3a) and described second air chamber (6a), has first piston portion (5a) that matches with the described first cavity portion (61) and second piston portion (5b) that matches with the described second cavity portion (62).
2. Pneumatic control proportioning time-delay change valve according to claim 1, it comprises bonnet (3), valve body (6) and valve gap (9), wherein:
Described bonnet (3) is connected in an end of described valve body (6), and described bonnet (3), described main valve plug assembly (5) and described valve body (6) surround described first air chamber (3a) of described first end jointly;
First port (1a) of described first throttle valve (1) is connected in described bonnet (3), and communicates with described first air chamber (3a);
Described second throttle valve (2) is formed in the sidewall of described bonnet (3);
Described valve gap (9) is connected in the other end of described valve body (6), and described valve gap (9), described main valve plug assembly (5) and described valve body (6) surround second air chamber (6a) of described second end jointly.
3. Pneumatic control proportioning time-delay change valve according to claim 2, it also comprises the 3rd throttle valve (10) and connecting tube (11), wherein:
First port (10b) of described the 3rd throttle valve (10) is connected in described valve body (6), and communicates with described second air chamber (6a) in the described valve body (6);
Second port (10c) of described the 3rd throttle valve (10) is connected in described second port (1b) of described first throttle valve (1) by described connecting tube (11).
4. Pneumatic control proportioning time-delay change valve according to claim 3, wherein said main valve plug assembly (5) comprise piston cap (51), piston (52), spring (53) and valve rod (56), wherein:
Described piston cap (51) is arranged in the described piston (52) hermetically, and the two forms the described first piston portion (5a) of described main valve plug assembly (5) jointly;
Described valve rod (56) forms described second piston portion (5b) of described main valve plug assembly (5), and the one end is connected in described first piston portion (5a);
Described spring (53) is arranged on described piston (52) inside, is positioned between described piston cap (51) and the described valve rod (56), and has the initial bias voltage amount.
5. Pneumatic control proportioning time-delay change valve according to claim 4, wherein said main valve plug assembly (5) also comprise screw (54) and packing ring (55), wherein:
Described packing ring (55) utilizes described screw (54) to be fixed on an end of described valve rod (56).
6. Pneumatic control proportioning time-delay change valve according to claim 4 is provided with Gask-O-Seal (7) between wherein said valve gap (9) and the described valve body (6).
7. Pneumatic control proportioning time-delay change valve according to claim 6, the top of wherein said valve rod (56) is formed with cylindrical closure part, the described sealing gasket of described closure part shutoff (7), thus form described cut-out connected state.
8. Pneumatic control proportioning time-delay change valve according to claim 3, wherein:
Described second throttle valve (2) has the spool (2c) of regulating self aperture, and described spool (2c) is arranged in the sidewall of described bonnet (3) in the mode that is threaded;
Described second port (2b) of described second throttle valve (2) is formed on the sidewall of described bonnet (3).
9. Pneumatic control proportioning time-delay change valve according to claim 8, wherein the gas flow of discharging from described first air chamber (3a) by described second throttle valve (2) in the unit time much smaller than by described the 3rd throttle valve (10) from the gas flow of described first air chamber (3a) discharge so that can appreciable impact not arranged to deflation time.
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| CN 200710308318 CN100582533C (en) | 2007-12-29 | 2007-12-29 | Pneumatic control proportioning time-delay change valve |
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| CN 200710308318 CN100582533C (en) | 2007-12-29 | 2007-12-29 | Pneumatic control proportioning time-delay change valve |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4406307A (en) * | 1981-03-31 | 1983-09-27 | Double A Products Company | Directional valve with spool transfer loop |
-
2007
- 2007-12-29 CN CN 200710308318 patent/CN100582533C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4406307A (en) * | 1981-03-31 | 1983-09-27 | Double A Products Company | Directional valve with spool transfer loop |
Non-Patent Citations (2)
| Title |
|---|
| 气动延时换向阀的结构及参数分析. 杨立成.液压与气动，第3期. 1980 |
| 气动延时换向阀的结构及参数分析. 杨立成.液压与气动，第3期. 1980 * |
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|---|---|
| CN101311587A (en) | 2008-11-26 |
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