CN209262324U - A kind of reversal valve and its rotary spool - Google Patents

Abstract

The utility model discloses a kind of reversal valve and its rotary spools, belong to valve applied technical field.Reversal valve includes valve body, driving device and rotary spool, rotary spool includes air inlet, bleed ports, relief hole and mounting hole, air inlet is set to the bottom of rotary spool, and it is located on the central axis of rotary spool, the perpendicular setting of the central axis of bleed ports and rotary spool, air inlet is connected with the bleed ports, relief hole is arranged through rotary spool, and it is separated by setting with air inlet, the reversal valve of the utility model controls the opening and closing of different valve chambers using this rotary spool, so that reversal valve, the control of tangential valve is no longer dependent on solenoid valve, for needing the valve body of two or more first guide cavity controls, two or more solenoid valve control valve bodies are utilized without corresponding, to reduce the number of component, the utility model is compact-sized simultaneously, production cost is low.

Description

A kind of reversal valve and its rotary spool

Technical field

The utility model belongs to valve applied technical field, specifically, being related to a kind of reversal valve and its rotary spool.

Background technique

Currently, automatic reverse, switching valve are all by solenoid valve control, technology is highly developed, and application is extremely extensive.Its principle It is required that each elder generation's guide cavity, requires the pressure change of the gas or liquid by least one solenoid valve control in it.For needing For the valve body of two or more first guide cavity controls, the solenoid valve control of corresponding number is needed, the opposite member used Device is more, and reliability decrease, high production cost, occupied space are big.

Utility model content

1, it to solve the problems, such as

For it is existing using control multiple reversal valves, tangential valve needs to cooperate multiple solenoid valves, using asking more than component Topic, the utility model provide a kind of reversal valve and its rotary spool.

2, technical solution

To solve the above problems, the utility model adopts the following technical scheme.

A kind of rotary spool, applied to periodicity pressurization, the pressure release of valve body, the valve body includes accommodating the rotary spool Inner cavity, be provided with side wall tap air channel and bottom tap air channel on the inner cavity, the rotary spool includes:

Air inlet is set to the bottom of the rotary spool, and is located on the center line axis of the rotary spool；

Bleed ports are set to rotary spool side, and are connected with the air inlet；

And pressure relief opening one and pressure relief opening two, the pressure relief opening one are set to rotary spool side, the pressure relief opening two is set It is placed in rotary spool upper surface, and the pressure relief opening one is connected with the pressure relief opening two；

Wherein, the entrance of the side wall tap air channel, the bleed ports, the pressure relief opening one, relative to the rotary valve The height of the bottom of core is equal, and the outlet port of the bottom tap air channel is corresponding with the position of air inlet.

Preferably, the bleed ports are at least one.

Preferably, the rotary spool further includes limiting slot, and the limiting slot is located at the top of rotary spool, the limiting slot It is equipped with limited block, described limited block one end is matched with the limiting slot.

Preferably, the rotary spool and the geomery of the inner cavity match, and are cone-shaped or cylindrical shape.

Preferably, the rotary spool is rubber rotary spool.

A kind of reversal valve, including the rotary spool, valve body and driving device, the valve body includes inner cavity and valve chamber film Group, the inner cavity include side wall tap air channel and bottom tap air channel, and the valve chamber film group includes:

Compressor tap air channel has compressor bleed ports, and the compressor bleed ports are located on the body wall, and One end of the compressor tap air channel is connected with air inlet；

Plenum duct has air taking port, and the air taking port is located on the body wall, and one end of the plenum duct and Working chamber connection；

Exhaust passage, has exhaust outlet, and the exhaust outlet is located on the body wall；

First guide cavity is connected with the side wall tap air channel；

One end of working chamber, the working chamber extends to the compressor tap air channel, and the other end extends to the first guide cavity, And it is connected with one end of the exhaust passage；

Valve film group, when the bleed ports of the rotary spool are connected to the entrance of the side wall tap air channel, the elder generation Air pressure increases and the valve film group is driven to move in guide cavity, connects one end of the working chamber and the compressor tap air channel The logical and other end and the exhaust passage disconnect, when the pressure relief opening one of the rotary spool and the entrance of the side wall tap air channel When connection, the intracavitary air pressure of guide reduces and the valve film group is driven to reset, and makes one end of the working chamber and the pressure Contracting machine tap air channel disconnects and the other end is connected to the exhaust passage.

Preferably, the valve film group includes upper diaphragm, lower diaphragm and connecting rod, and the upper diaphragm and the lower diaphragm are distinguished The both ends of connecting rod are fixed on, elder generation's guide cavity, exhaust passage, working chamber and tap air channel are sequentially connected, the upper diaphragm edge It is fixed on the inner wall of the first guide cavity, when guide cavity air pressure increases in the ban, the upper diaphragm is recessed to downwards the working chamber Upper surface disconnects the connection of exhaust passage and working chamber, while lower diaphragm leaves working chamber lower end surface, connects the tap air channel With working chamber；When guide cavity air pressure reduces in the ban, the upper diaphragm resets, and working chamber is connected to exhaust passage, while lower diaphragm is transported Move the connection that the tap air channel and working chamber are disconnected to working chamber lower end surface.

Preferably, the both ends of the connecting rod are arranged with fixed frame.

Preferably, the valve body includes at least two valve chamber mould groups, and the quantity of the side wall tap air channel and the valve The quantity of cavity mold group is consistent.

Preferably, the driving device is motor, and the motor is fixed at the top of valve body, and the motor exports Spring is arranged on axis.

3, beneficial effect

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model is controlled with step motor control rotary spool by rotary spool by designing rotary spool The opening and closing of first guide cavity, the pressure for keeping guide intracavitary generates variation, to control the movement of valve film group, realizes valve body air inlet (liquid) Switching, the utility model makes the control of reversal valve, tangential valve be no longer dependent on solenoid valve, for need two or two with The valve body of upper elder generation's guide cavity control utilizes two or more solenoid valve control valve bodies without corresponding, to reduce first device The number of part, while the utility model is compact-sized, production cost is low；

(2) rotary spool of the utility model can control the opening and closing of different valve chambers, the preferred rubber of rotary spool by rotation Glue rotary spool, good airproof performance, structure is simple, is easily installed manufacture；

(3) the utility model sheathed spring on motor output shaft further ensure that rotary spool and accommodate rotation The compactness of the inner cavity of spool, increases sealing performance.

Detailed description of the invention

Fig. 1 is the structure of reversing valve schematic diagram one of embodiment 1；

Fig. 2 is the structure of reversing valve schematic diagram two of embodiment 1；

Fig. 3 is the reversal valve main view direction structure cross-sectional view three of embodiment 1；

Fig. 4 is the reversal valve main view direction structure cross-sectional view four of embodiment 1；

Fig. 5 is the reversal valve side view orientation structure sectional view five of embodiment 1；

Fig. 6 is valve body structure schematic diagram；

Fig. 7 is valve body top view；

Fig. 8 is valve body bottom view；

Fig. 9 is the reversal valve cross-sectional view of embodiment 2；

Figure 10 is the structural schematic diagram of rotary spool；

Figure 11 is the rotary spool structural schematic diagram that Figure 10 rotates clockwise 90 degree；

Figure 12 is the rotary spool structural schematic diagram that Figure 10 rotates clockwise 180 degree；

Figure 13 is the rotary spool structural schematic diagram that Figure 10 is rotated by 90 ° counterclockwise；

Figure 14 is the bottom view of the rotary spool of Figure 13；

Figure 15 is the cross-sectional view of the rotary spool of Figure 10；

Figure 16 is the main view of connecting rod；

Figure 17 is the top view of connecting rod；

Figure 18 is the structural schematic diagram of the upper cover plate 401 of embodiment 2.

In figure: 1, rotary spool；101, mounting hole；102, bleed ports one；103, bleed ports two；104, pressure relief opening one； 105, air inlet；106, limiting slot；107, rotary spool side；108, rotary spool upper surface；2, driving device；3, motor is defeated Shaft；4, valve body；401, upper cover plate；402, lower cover plate；403, compressor tap air channel；404, left plenum duct；405, the right side is sent Gas channel；406, exhaust passage；407, inner cavity；408, upper left diaphragm；409, upper right diaphragm；410, left connecting rod；411, right connecting rod； 412, lower-left diaphragm；413, bottom right diaphragm；414, left first guide cavity；415, right first guide cavity；416, left working chamber；417, right work Chamber；418, fixed frame；419, side wall tap air channel；420, bottom tap air channel；421, limited block.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Wherein, it is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Therefore, below to providing in the accompanying drawings The detailed description of the embodiments of the present invention be not intended to limit the range of claimed invention, but only Indicate the selected embodiment of the utility model.

It should be noted that in the description of the present invention, term " on ", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or Positional relationship is merely for convenience of describing the present invention and simplifying the description, and is not the device or member of indication or suggestion meaning Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model System.

Term used in the explanation of this paper is stated is intended merely to description specific embodiment, it is not intended that limits this reality With novel, term " and or " used herein includes any and all combination of one or more relevant listed items.

Embodiment 1

Fig. 1, Fig. 5 are please referred to, is the structural schematic diagram of reversal valve, which is mainly used for needing two or more The valve body of first guide cavity control, is used especially in oxygenerator.Reversal valve in the present embodiment includes rotary spool 1, valve body 4 and driving Device 2, wherein rotary spool 1 includes air inlet 105, pressure relief opening 104 and bleed ports, please also refer to Figure 10 to Figure 15, rotation The exterior contour of spool 1 be cone-shaped, certainly, rotary spool 1 is not limited to cone-shaped, can also be cylindrical shape or its Its shape is provided with mounting hole 101, the spin rotary plate upper surface 108 of mounting hole 101 and edge at the top of rotary spool 1 The central axis of rotary spool extends downwardly, and is a blind hole, for connecting the output shaft of driving device 2, the driving of the present embodiment Device 2 selects motor, and motor is fixedly installed in 4 top of valve body, and motor output shaft 3 is installed in blind hole, to drive rotary valve The rotation of core 1.Air inlet 105, the bottom surface and edge of the spin of air inlet 105 rotary plate 1 are offered in the bottom of rotary spool 1 The central axial direction of rotary spool upwardly extends certain depth, it is expressly noted that mounting hole 101 and air inlet 105 must not Connection, will guarantee there is suitable distance therebetween always；It is provided with pressure relief opening 1 on rotary spool side 107, is Pressure relief opening two is provided on rotary spool upper surface 108, pressure relief opening 1 is connected with pressure relief opening two, forms relief hole, is used for In addition to this pressure release of valve body is additionally provided with bleed ports, bleed ports are with rotary spool side 107 on rotary spool side 107 For basal plane, extends to along the central axis upright direction with rotary spool 1 and be connected with air inlet 105, bleed ports ground quantity At least one, it is bleed ports 1 and bleed ports 2 103, bleed ports one respectively that there are two bleed ports for setting in the present embodiment 102 and bleed ports 2 103 be symmetrically disposed on one 104 two sides of pressure relief opening, and two bleed ports are basal plane with rotary plate side 107, Extend to along the central axis upright direction with rotary spool 1 and be connected with air inlet 105, gas can through air inlet 105 into Enter bleed ports 1 and/or bleed ports 2 103.

Further, bleed ports 1 and the design of bleed ports 2 103 are at an angle of in 30 degree of -89 degree, according to both sides The gas flow that valve chamber needs specifically rotates angular dimension, and to adapt to the different demands of oxygenerator, specific angle is not by this model The limitation enclosed.

Valve body 4 includes inner cavity 407 and valve chamber film group again, and inner cavity 407 is mainly used for accommodating rotary spool 1, and inner cavity 407 includes Side wall tap air channel 419 and bottom tap air channel 420, wherein bottom tap air channel 420 is for being connected to rotary spool 1 and valve body 4 Inlet channel.It is significant to note that side wall tap air channel 419 and bleed ports above-mentioned, pressure relief opening 1 are relative to rotation The height of the bottom of rotary plate 1 is equal, during to guarantee that rotary spool 1 rotates in inner cavity 407, bleed ports and pressure relief opening One 104 can periodically be connected to be pressurizeed or pressure release with the entrance of side wall tap air channel 419.In addition, please continue to refer to Fig. 6 and Fig. 7 opens up limiting slot 106 in rotary spool upper surface 108, in inner cavity to control the rotation angle of rotary spool 1 The top of inner cavity 407 is arranged in the limited block that setting is matched with limiting slot 106 in 407, the limited block, and rotary spool 1 is installed To after inner cavity 407, limited block is caught in limiting slot 106, and limited block rotates in limiting slot, to cooperate the rotation of rotary spool 1, Guarantee the running accuracy of rotary spool 1.In addition, rotary spool 1 is in the selection of material, preferred rubber material or plastic material Rotary spool selects the rotary spool of rubber or plastic material, can be very good to be fitted in inner cavity 407, guarantees rotary spool 1 With the closure of inner cavity 407, increase the leakproofness between rotary spool 1 and rotary spool accommodating chamber 407, but is not limited to other same Sample is able to achieve the material of leakproofness.

In order to further guarantee the compactness of rotary spool 1 Yu inner cavity 407, increase leakproofness, on motor output shaft 3 Sheathed spring, the spring one end are fixed on rotary spool upper surface 108, under the effect of spring force, guarantee rotary valve The compactness of core 1 and rotary spool accommodating chamber 407, sheathed spring is especially suitable on motor output shaft 3 bores in this present embodiment The rotary spool 1 of shape, the rotary spool 1 of cone-shaped itself just have between inner cavity 407 good during rotation Stickiness, sheathed spring and spring one end is fixed on rotary spool upper surface 108 on motor output shaft 3, so that rotation When rotary plate 1 rotates among inner cavity 407, it when there is gap, can adjust in time, remain rotary spool 1 and inner cavity Compactness between 407 guarantees the leakproofness between rotary spool and inner cavity 407.

Valve chamber mould group specifically includes compressor tap air channel 403, plenum duct, exhaust passage 406, first guide cavity, work again Chamber and pilot mechanism below describe to each composition of valve chamber mould group in detail:

Compressor tap air channel 403 has compressor bleed ports, and compressor bleed ports are located on 4 side wall of valve body, and should 105 phase of air inlet that one end of compressor tap air channel 403 passes through the bottom tap air channel 420 and rotary spool 1 of 4 bottom of valve body Connection, compressor bleed can enter compressor tap air channel 403 by compressor bleed ports, then through bottom tap air channel 420 Into the air inlet 105 of rotary spool 1, bleed ports are gone successively to through air inlet 105；

Plenum duct has air taking port, which is located on 4 side wall of valve body, and one end of the plenum duct and work Chamber connection, the air inlet of other end connection molecule sifting bed, the present embodiment are not limited to molecular sieve by taking molecular sieve bed as an example Bed；

Exhaust passage 406 please refers to Fig. 2 and Fig. 3, and exhaust passage 406 has exhaust outlet, which is located at 4 side of valve body On wall, it is notable that exhaust passage 406 is never connected to compressor tap air channel 403；

First guide cavity please refers to Fig. 4 and Fig. 6, and first guide cavity is connected with aforementioned lateral wall tap air channel 419, when compressor bleed Into after the air inlet 105 of rotary spool 1, gone successively in first guide cavity by side wall tap air channel 419, thus to first guide cavity into Row pressurization；

Working chamber, with continued reference to FIG. 4, one end of the working chamber extends to compressor tap air channel 403, the other end is to elder generation Guide cavity extends, and is connected with one end of exhaust passage 406, and working chamber to first guide cavity elongated end when to the pressurization of first guide cavity, with One end of exhaust passage 406 mutually disconnects, and when first guide cavity pressure release, is connected with one end of exhaust passage 406；

Valve film group, when the bleed ports of rotary spool 1 are connected to the entrance of side wall tap air channel 419, the intracavitary gas of guide Pressure, which increases, simultaneously drives the valve film group to move, and is connected to one end of the working chamber with the compressor tap air channel and another End is disconnected with the exhaust passage 406, when the pressure relief opening 1 of the rotary spool 1 and the entrance of the side wall tap air channel When connection, the intracavitary air pressure of guide reduces and the valve film group is driven to reset, and makes one end of the working chamber and the pressure Contracting machine tap air channel 403 disconnects and the other end is connected to the exhaust passage 406.

Wherein, the valve film group includes upper diaphragm, lower diaphragm and connecting rod, and the upper diaphragm and the lower diaphragm are solid respectively Due to the both ends of connecting rod, elder generation's guide cavity, exhaust passage 406, working chamber and tap air channel are sequentially connected, the upper diaphragm edge It is fixed on the inner wall of the first guide cavity, when guide cavity air pressure increases in the ban, the upper diaphragm is recessed to downwards the working chamber Upper surface disconnects the connection of exhaust passage 406 and working chamber, while lower diaphragm leaves working chamber lower end surface, connects the bleed Channel and working chamber；When guide cavity air pressure reduces in the ban, the upper diaphragm resets, and working chamber is connected to exhaust passage, while lower film Piece moves to working chamber lower end surface, disconnects the connection of the tap air channel and working chamber.In order to guarantee that connecting rod moves in working chamber It is dynamic, it does not deflect, and then guarantee the leakproofness of working chamber, is fixedly installed fixed frame 418, the fixation at the both ends of connecting rod The size of frame 418 is identical as work chamber size, and fits with working chamber, and the schematic diagram of connecting rod and fixed frame 418 please refers to figure 14 and Figure 15.

As shown in figure 5, upper cover plate 401, lower cover plate 402 are fixed on in the present embodiment by bolt the upper and lower side of valve body, Valve chamber mould group is formed, complete valve body 4 is constituted, certainly for valve body 4, can be integrally formed and be manufactured, is not limited to Single production model.

Valve chamber mould group quantitatively, at least two, can be multiple, it should be noted that be exactly the inner cavity 407 of valve body 4 On the quantity for stating side wall tap air channel 419 should be consistent with the quantity of valve chamber mould group.The present embodiment is with two valve chamber mould groups For, it describes in detail to the reversal valve:

Referring to FIG. 4, plenum duct includes left plenum duct 404 and right plenum duct 405, the one of left plenum duct 404 End is connected to left working chamber 416, the air inlet of other end connection molecule sifting bed 1, one end of right plenum duct 405 and right working chamber 417 connections, the air inlet of other end connection molecule sifting bed 2, the present embodiment are not limited to molecular sieve by taking molecular sieve bed as an example Bed；

First guide cavity includes left first guide cavity 414 and right first guide cavity 415, and working chamber includes left working chamber 416 and right working chamber 417, valve film group includes left valve film group and right valve film group, and the left valve film group includes upper left diaphragm 408, left connecting rod 410 and lower-left diaphragm 412, right valve film group include upper right diaphragm 409, right connecting rod 411 and bottom right diaphragm 413, compressor bleed Enter bottom tap air channel 420 by compressor tap air channel 403, the air inlet of rotary spool 1 is entered through bottom tap air channel 420 Mouthfuls 105, the bleed ports of rotary spool 1 are entered through air inlet 105, when bleed ports are only arranged one, through bleed ports and interior Side wall tap air channel 419 on chamber 407 enters left first guide cavity 414, and the air pressure in left elder generation's guide cavity 414 increases and drives upper left diaphragm 408 movements, upper left diaphragm 408 are recessed to downwards the upper surface of left working chamber 416, disconnect working chamber 416 and exhaust passage 406 Connection, driving left connecting rod 410 are moved downward along left working chamber 416, and the fixed frame 418 of 410 both ends of left connecting rod setting is to left connecting rod 410 play the guiding role, and lower-left diaphragm 412 moves downward, and leave the lower end surface of left working chamber 416, and compressor bleed passes through left work Make chamber 416 and enter left plenum duct 404, send through left plenum duct 404 to molecular sieve bed 1.By controlling the revolving speed of motor, make to revolve The pressure relief opening 1 of rotary plate 1 is connected with side wall tap air channel 419, and left elder generation's 414 air pressure of guide cavity reduces and drives upper left diaphragm 408 reset, and left connecting rod 410 moves upwards, and lower-left diaphragm 412 is driven to move upwards, one end of left working chamber 416 and compression power traction Gas channel 403 disconnects and the other end is connected to the exhaust passage 406, disconnects the company of left plenum duct 404 and molecular sieve bed 1 It is logical.At the same time, when the rotation of rotary spool 1 is corresponding with the side wall tap air channel 419 on right first guide cavity 415 to bleed ports, pressure Contracting power traction gas, which is passed through, enters bottom tap air channel 420 by compressor tap air channel 403, enters through bottom tap air channel 420 and rotates The air inlet 105 of spool 1 enters the bleed ports of rotary spool 1 through air inlet 105, and repeats identical with left valve chamber mould group dynamic Make, is pressurizeed to right first guide cavity 415, pressure release, control the on-off of right plenum duct 406 and molecular sieve bed 2.

The reversal valve of the present embodiment is mainly made of driving device 2, rotary spool 1, valve film group, valve body 4；Rotary spool 1 abutting 407 inner surface of inner cavity can rotate left and right under the drive of driving device 2；Being two below with bleed ports quantity is Example, and the quantity of bleed ports is consistent with the quantity of side wall tap air channel 419, and bleed ports 1 and bleed are provided on rotary spool 1 Mouth 2 103 is connected to left first guide cavity 414 and right first guide cavity 415 respectively.Rotary spool 1 is under the drive of driving device 2, control The opening and closing of first guide cavity, the pressure for keeping guide intracavitary generates variation, to control the movement of valve film group, realizes valve body air inlet (liquid) Switching.

Below with reference to Fig. 1 to Figure 17, by taking oxygenerator as an example, left plenum duct 404 is connected with molecular sieve bed 1, and the right side is supplied gas logical Road 405 is connected with molecular sieve bed 2, is explained as follows to the working principle of reversal valve:

A, when being not powered on ventilation, rotary spool 1 is leaned against counterclockwise on the limited block 421 on valve body 4, at this point, rotary spool 1 On bleed ports 1 lead to left first guide cavity 414, pressure relief opening 1 and right elder generation's guide cavity 415 lead to；Under two valve chamber film groups Diaphragm fits with working chamber, pushes down valve base mouth, disconnects compressor tap air channel 403 and two molecular sieve beds, exhaust passage 406 are also turned on two molecular sieve beds；

B, it is powered on starting, motor 2 (preferably stepper motor) rotates clockwise, and drive rotary spool 1 to start turning, this When bleed ports 1 lead to left first guide cavity 414, compressed air through compressor tap air channel 403 enter in rotary spool 1 into Port 105 enters left first guide cavity 414 through bleed ports 1, and establishes pressure, drives left valve film group to move down, makes to compress Power traction gas is entered in molecular sieve bed 1 by left plenum duct 404, and simultaneously switches off the company of molecular sieve bed 1 Yu exhaust passage 406 It is logical.At this point, pressure relief opening 1 leads to right first guide cavity 415, communicates right first guide cavity 415 with atmosphere, pressure cannot be established, it is right Valve film group remains stationary, and compressor bleed not can enter in molecular sieve bed 2, and the company of molecular sieve bed 2 and exhaust passage 406 It is logical.

C, rotary spool 1 rotated clockwise certain angle, and bleed ports 1 still lead to left first guide cavity 414, pressure relief opening One 104 disconnect with right first guide cavity 415, and bleed ports 2 103 also keep leading to right first guide cavity 415 on rotary spool 1, and compression is empty Gas also enters right first guide cavity 415, and establishes pressure, drives right valve film group to move down, beating send compressor bleed by the right side Gas channel 405 enters in molecular sieve bed 2, and simultaneously switches off the connection of molecular sieve bed 2 Yu exhaust passage 406.Compressed air at this time Enter molecular sieve bed 1 and molecular sieve bed 2 simultaneously respectively, this presses the stage for balance, this stage continues 0.5 second or so.

D, rotary spool 1 continues to rotate clockwise certain angle, and pressure relief opening 1 leads to left first guide cavity 414, makes left elder generation Guide cavity 414 is communicated with atmosphere, and left elder generation's 414 pressure release of guide cavity, left valve film group moves up, and compressor bleed cannot pass through left plenum duct 404 enter in molecular sieve bed 1, while the connection of molecular sieve bed 1 and exhaust passage 406, and regeneration is rinsed in 1 pressure release of molecular sieve bed；This When rotary spool 1 on bleed ports 2 103 still lead to right first guide cavity 415, right elder generation's guide cavity 415 keeps pressure, right valve film group Continue to keep the next, compressor bleed is gone successively in molecular sieve bed 2, and keeps molecular sieve bed 2 and exhaust passage 406 simultaneously It disconnects, makes molecular sieve bed 2 continue to produce oxygen, this process continues 3 to 4 seconds.

E, after the d stage, motor 2 starts to rotate counterclockwise, and drives rotary spool 1 also to rotate counterclockwise, rotary spool 1 Certain angle was rotated, the bleed ports 2 103 on rotary spool 1 still lead to right first guide cavity 415, pressure relief opening 1 and left elder generation Guide cavity 414 disconnects, and the bleed ports 1 on rotary spool 1 also keep leading to left first guide cavity 414, and compressed air also enters Left elder generation's guide cavity 414, and pressure is established, it drives left valve film group to move down, enters compressor bleed in molecular sieve bed 1, and Simultaneously switch off the connection of molecular sieve bed 1 Yu exhaust passage 406.Compressed air enters molecular sieve bed 1 and molecule simultaneously respectively at this time Sifting bed 2, this presses the stage for balance, this stage continues 0.5 second or so.

F, rotary spool 1 continues to rotate counterclockwise certain angle, and pressure relief opening 1 leads to right first guide cavity 415, makes right elder generation Guide cavity 415 is communicated with atmosphere, and right elder generation's 415 pressure release of guide cavity, right valve film group moves up, and closes the right right plenum duct of compressor bleed 405, compressor bleed not can enter in molecular sieve bed 2, while the connection of molecular sieve bed 2 and exhaust passage 406, molecular sieve bed 2 Regeneration is rinsed in pressure release；The bleed ports 1 on rotary spool 1 still lead to left first guide cavity 414 at this time, and left elder generation's guide cavity 414 is kept Pressure, left valve film group continue to keep the next, and compressor bleed is gone successively in molecular sieve bed 1, and keeps molecular sieve bed 1 simultaneously With the disconnection of exhaust passage 406, molecular sieve bed 1 is set to continue to produce oxygen, this process continues 3 to 4 seconds.

Later rotary spool 1 continues by above-mentioned suitable, counterclockwise sequence alternate rotation, in reversal valve internal control compression The outbound course of power traction gas, makes compressor bleed respectively enter molecular sieve bed 1, molecular sieve bed 2 as required, alternately produces oxygen, regeneration, So circulation.

G, after shutdown, motor 2 is delayed several circulations, makes the abundant pressure release of first guide cavity, the lower diaphragm of final left and right valve chamber mould group Air inlet valve seat mouth is pushed down, disconnects compressor tap air channel 403 and two molecular sieve beds, exhaust passage and two molecular sieve beds are simultaneously It connects, the intracorporal overbottom pressure of machine is enable sufficiently to discharge.

By analysis above, in addition to the balance pressure stage, when compressor tap air channel 403 is communicated with molecular sieve bed 1, Exhaust passage 406 is communicated with molecular sieve bed 2；When compressor tap air channel 403 is communicated with molecular sieve bed 2, exhaust passage 406 with Molecular sieve bed 1 communicates；The exhaust passage 406 of getting along well always of compressor tap air channel 403 communicates；When equilibrium stage, compressor bleed Channel 403 communicates simultaneously with molecular sieve bed 1 and molecular sieve bed 2, and exhaust passage 406 breaks simultaneously with molecular sieve bed 1 and molecular sieve bed 2 It opens.

The above process is carefully analyzed, it finds that, the control process and electromagnetism that stepper motor 2 drives rotary spool 1 to generate Valve control process is just the same, that is, ensure that the feasibility of program replacement of solenoid valve.

Embodiment 2

On the basis of embodiment 1, Fig. 9 and Figure 18 are please referred to, the valve body of the reversal valve of this implementation includes 401 He of upper cover plate Lower cover plate 402, wherein upper cover plate 401 has the circular ring shape extended downwardly raised above corresponding first guide cavity, and Side wall tap air channel 419 is set in circular ring shape protrusion, also needs the side wall bleed it is specifically intended that in circular ring shape protrusion Channel 419 is equal relative to the height of the bottom of rotary spool 1 with bleed ports above-mentioned, pressure relief opening 1, to guarantee rotary valve During core 1 rotates in inner cavity 407, bleed ports and pressure relief opening 1 can periodically enter with side wall tap air channel 419 Mouth is connected to be pressurizeed or pressure release.Compressor tap air channel 403, left plenum duct 404, right plenum duct 405 and exhaust Channel 406 is in the orientation of setting and embodiment 1 is different, but its working principle is identical, is all rotary spool 1 in driving device 2 Drive under, control the opening and closing of first guide cavity, the pressure for keeping guide intracavitary generates variation, real to control the movement of valve film group The switching of existing valve body air inlet (liquid), this will not be repeated here.

Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.

Claims (10)

1. a kind of rotary spool, periodicity pressurization, pressure release applied to valve body, which is characterized in that the valve body includes accommodating institute The inner cavity of rotary spool (1) is stated, side wall tap air channel and bottom tap air channel, the rotary spool are provided on the inner cavity (1) include:

Air inlet (105) is set to the bottom of the rotary spool (1), and is located at the center line axis of the rotary spool (1) On；

Bleed ports are set to rotary spool side (107), and are connected with the air inlet (105)；

And pressure relief opening one (104) and pressure relief opening two, the pressure relief opening one (104) is set to rotary spool side (107), described Pressure relief opening two is set to rotary spool upper surface (108), and the pressure relief opening one (104) is connected with the pressure relief opening two；

Wherein, the entrance of the side wall tap air channel, the bleed ports, the pressure relief opening one (104), relative to the rotary valve The height of the bottom of core (1) is equal, and the outlet port of the bottom tap air channel is corresponding with the position of air inlet (105).

2. rotary spool according to claim 1, it is characterised in that: the bleed ports are at least one.

3. rotary spool according to claim 1 or 2, it is characterised in that: the rotary spool (1) further includes limiting slot (106), the limiting slot (106) is located at the top of rotary spool (1), and the limiting slot (106) is equipped with limited block, described Limited block one end is matched with the limiting slot (106).

4. rotary spool according to claim 1 or 2, it is characterised in that: the shape of rotary spool (1) and the inner cavity Shape size matches, and is cone-shaped or cylindrical shape.

5. rotary spool according to claim 4, it is characterised in that: the rotary spool (1) is rubber rotary spool.

6. a kind of reversal valve, which is characterized in that including rotary spool (1), valve body described in claim 1-5 any one (4) and driving device (2), the valve body (4) include inner cavity (407) and valve chamber film group, and the inner cavity (407) includes side wall bleed Channel (419) and bottom tap air channel (420), the valve chamber film group include:

Compressor tap air channel (403), has compressor bleed ports, and the compressor bleed ports are located at the valve body (4) side wall On, and one end of the compressor tap air channel (403) is connected with air inlet (105)；

Plenum duct has air taking port, and the air taking port is located on the valve body (4) side wall, and one end of the plenum duct and Working chamber connection；

Exhaust passage (406), has exhaust outlet, and the exhaust outlet is located on the valve body (4) side wall；

First guide cavity is connected with the side wall tap air channel；

One end of working chamber, the working chamber extends to the compressor tap air channel (403), and the other end prolongs to the first guide cavity It stretches, and is connected with one end of the exhaust passage (406)；

Valve film group, when the bleed ports of the rotary spool (1) are connected to the entrance of the side wall tap air channel, the guide Intracavitary air pressure increases and the valve film group is driven to move, and is connected to one end of the working chamber with the compressor tap air channel And the other end and the exhaust passage (406) disconnect, when pressure relief opening one (104) and the side wall of the rotary spool (1) draw When the entrance connection in gas channel, the intracavitary air pressure of guide reduces and the valve film group is driven to reset, and makes the working chamber One end is disconnected with the compressor tap air channel (403) and the other end is connected to the exhaust passage (406).

7. reversal valve according to claim 6, it is characterised in that: the valve film group includes upper diaphragm, lower diaphragm and company Bar, the upper diaphragm and the lower diaphragm are individually fixed in the both ends of connecting rod, the elder generation guide cavity, exhaust passage (406), working chamber It being sequentially connected with tap air channel, the upper diaphragm edge is fixed on the inner wall of the first guide cavity, when guide cavity air pressure increases in the ban, The upper diaphragm is recessed to downwards the upper surface of the working chamber, disconnects the connection of exhaust passage (406) and working chamber, at present Diaphragm leaves working chamber lower end surface, connects the tap air channel and working chamber；When guide cavity air pressure reduces in the ban, the upper diaphragm is multiple Position, working chamber is connected to exhaust passage, while lower diaphragm moves to working chamber lower end surface, disconnects the tap air channel and working chamber Connection.

8. reversal valve according to claim 7, it is characterised in that: the both ends of the connecting rod are arranged with fixed frame (418).

9. reversal valve described according to claim 6 or 7 or 8, it is characterised in that: the valve body (4) includes at least two valve chambers Mould group, and the quantity of the side wall tap air channel is consistent with the quantity of the valve chamber mould group.

10. reversal valve described according to claim 6 or 7 or 8, it is characterised in that: the driving device (2) is motor, described Motor is fixed at the top of valve body (4), and is arranged with spring on the motor output shaft (3).