CN220302799U - Oxygen production separating valve - Google Patents

Abstract

The utility model discloses an oxygen production separating valve, which comprises a valve base and a shell assembly, and is characterized in that: the device also comprises a driving assembly, a valve disc, a rotating disc, a first-stage sun gear, a planetary assembly, a silencing cover plate and a silencing foam plate, wherein an output connecting part of the driving assembly is fixedly connected with the first-stage sun gear; the first-stage solar wheel is used as an input part and connected with the planetary assembly; the primary sun gear and the planetary assembly are internally arranged in the annular gear, the lower part of the planetary assembly is connected with the rotating disc, and the rotating disc is internally arranged in the rotating valve cavity; the valve disc is coaxially fixed on the valve base; the shell component is coaxially connected with the valve base and the silencing cover plate in sequence through the flange plate and is fixed together; the sound deadening foam plate is disposed in a sound deadening groove of the valve seat. The oxygen-making separating valve has the advantages of high coaxiality, long service life, self-cooling of the motor, self-maintaining sealing function due to abrasion, full sealing, stable oxygen making, high oxygen making efficiency and the like.

Description

Oxygen production separating valve

Technical Field

The utility model relates to a separating valve, in particular to an oxygen generating separating valve.

Background

At present, the oxygen production separating valve is an important ring of the PSA oxygen production system, the performance of the oxygen production separating valve directly influences the oxygen production effect of a machine, the separating valve core piece is a valve disc, a rotating disc and a motor, when the oxygen production separating valve works, the rotating disc is tightly attached to the valve disc under the action of the axial pressure of air pressure, the motor drives the rotating disc to do circular motion, and then the oxygen production and nitrogen discharge rules are orderly and alternately carried out while relative rotation movement is realized through the respective air passage structures of the rotating disc and the valve disc, and in the rotation process, the friction force generated by the rotating disc under the action of the axial pressure directly influences the service life of the motor.

The oxygen production separating valve that circulates on the market, the rotary disk does not have central location, lead to rotary disk lateral deviation, the lateral deviation can continue to increase the spin resistance, need further improve the output torque of motor, make the life-span of motor further reduce, meanwhile, the lateral deviation makes original runner's position change, and sealing condition changes, lead to the oxygen production effect unstable, the oxygen production inefficiency, original valve disc and rotary disk are basically by ceramic material composition, valve disc and the rotary disk that ceramic material made need further grind its sealed terminal surface, and this grinding technology is more time-consuming, manufacturing cost is high.

Secondly, the sealing mode that motor and rotary disk on the market at present are connected is power seal, because rotary disk is along with the motor circular motion all the time, its power seal assembly can increase along with rotatory number of times for the power seal assembly appears wearing and tearing the condition power seal assembly's wearing and tearing can lead to airtight poor, further influences the stability of oxygen production.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides an oxygen production separation valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an oxygen generation separating valve, including the valve base, the casing subassembly, still include the drive assembly, the valve disc, the rotary disk, the one-level sun gear, the planet subassembly, amortization apron, amortization foam board, the casing subassembly includes the ring gear, the rotary valve chamber, the ring flange, motor housing or rotor housing, the below and the rotary valve chamber of ring gear are connected, the outer wall and the ring flange of rotary valve chamber are connected, the top and the motor housing or rotor housing of ring gear are connected, the output connecting portion and the one-level sun gear of drive assembly are fixed connection, the one-level sun gear is as input and is linked to each other with the planet subassembly, the drive assembly is motor or by stator and rotor subassembly constitution, the motor is built-in motor housing or stator are installed on rotor housing's outer wall and rotor subassembly is built-in, one-level sun gear, the planet subassembly is built-in the ring gear, the below and the rotary disk are connected, the rotary disk is built-in the rotary valve chamber, coaxial fixing is on the valve base, the casing subassembly is in proper order with valve base, apron coaxial coupling and fixing together, the valve disc is settled in the amortization groove of valve base.

Preferably, the center of the valve base is provided with a center shaft hole matched with the center shaft sleeve, both sides of the center shaft hole are provided with an A hole positioning circle and a B hole positioning circle which are identical in size and symmetrical in position, the center shaft hole is communicated with the silencing groove, and the lower parts of the A hole positioning circle and the B hole positioning circle are respectively provided with an A connecting port and a B connecting port which are identical in shape.

Preferably, the center of the valve disc is provided with an exhaust port matched with the center shaft sleeve, two sides of the exhaust port are respectively provided with an A port and a B port which are the same in size and symmetrical in position, the position of the A port corresponds to that of the A hole positioning circle, the position of the B port corresponds to that of the B hole positioning circle, a downward-protruding A positioning hole column and a downward-protruding B positioning hole column are respectively formed below the A port and the B port, and the valve disc is embedded and fixedly sealed in the A hole positioning circle and the B hole positioning circle on the valve base through the A positioning hole column and the B positioning hole column.

Preferably, the end face of the valve disc is provided with a sealing plane, the sealing plane is respectively connected with the port A, the port B and the exhaust port, and the flatness of the sealing plane is as follows: 0-8 mu m.

Preferably, the planetary assembly comprises a planet carrier and planet gears matched with the primary sun gear and the inner gear ring, a planet disk is arranged on the planet carrier, a sun hole is arranged in the center of the planet disk, the planet disk downwards forms a convex secondary sun gear matched with the planet gears, the sun hole sequentially penetrates through the planet disk and the secondary sun gear, the planet disk upwards forms convex primary gear shafts matched with the planet gears, the number of the primary gear shafts is more than 2, the primary gear shafts are uniformly distributed on the same dividing circle, and the dividing circle is concentric with the sun hole.

Preferably, be equipped with sealed inside groove on the rotary disk, sealed inside groove includes spread groove and centering hole, and the centering hole sets up in the center of rotary disk, and the centering hole is linked together with spread groove side direction, and the below of sealed inside groove is equipped with the sealed step that is connected with centering hole, spread groove, the terminal surface roughness of sealed step: and a central positioning shaft coaxial with the centering hole is arranged above the sealed inner groove, secondary gear shafts matched with the planetary gears are arranged above the sealed inner groove, the number of the secondary gear shafts is more than 2, the secondary gear shafts are uniformly distributed on the same dividing circle, and the dividing circle is concentric with the central positioning shaft.

Preferably, the motor shell comprises a motor mounting cavity and an air inlet connecting cover, wherein the air inlet connecting cover is sleeved in the motor mounting cavity and fixedly sealed in the motor mounting cavity; the motor installation cavity is above the annular gear and is connected with the annular gear.

Preferably, the inner wall of the motor installation cavity is provided with a diversion trench communicated with the inner wall of the motor installation cavity.

Preferably, the air inlet connecting cover comprises a sealing cover hole matched with the outer wall of the motor mounting cavity, a sealing cover plate connected with the sealing cover hole is arranged above the sealing cover hole and is connected with the sealing cover hole, an upper sealing groove is arranged on the sealing cover plate, an upward-protruding C connecting port is arranged on the sealing cover plate and is communicated with the sealing cover hole, a glue filling groove is arranged on the sealing cover plate and on the side face of the C connecting port, and a lead hole is arranged at the bottom of the glue filling groove.

Preferably, the rotor shell comprises a rotor mounting cavity, the rotor mounting cavity is arranged above the annular gear and connected with the annular gear, a C connector is arranged above the rotor mounting cavity, and the rotor mounting cavity is communicated with the C connector.

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

according to the utility model, through the central positioning shaft of the rotary disk and the central shaft sleeve fixed on the valve disc and the valve base, the rotary disk always performs circular motion around the center under the drive of the motor, no lateral resistance is generated, and the service life of the motor is ensured; meanwhile, the stability of oxygen production and the reliability of sealing are also ensured.

The sealing step on the rotary disk is used again, so that the self-compensation function is realized under the condition of material abrasion, and the service life of the oxygen generating valve is further ensured.

Secondly, the motor is internally arranged in the motor mounting cavity or the rotor assembly is internally arranged in the rotor mounting cavity, and the stator is fixed on the outer wall of the rotor mounting cavity, so that the full-sealing function is realized, the situation that the power seal leaks is avoided, and the stability and the oxygen production efficiency of oxygen production are further ensured.

Finally, the air inlet is arranged on the C connector, so that a cooling effect is achieved on the motor or the stator, and the service life of the motor or the stator is guaranteed.

Drawings

The utility model will be further described with reference to the accompanying drawings:

FIG. 1 is a schematic diagram A of the structure of the present utility model;

FIG. 2 is a schematic diagram B of the structure of the present utility model;

FIG. 3 is a schematic view of a valve base according to the present utility model;

FIG. 4 is a second schematic view of the valve base of the present utility model;

FIG. 5 is a schematic view showing the internal structure of a motor housing according to the present utility model;

FIG. 6 is a schematic view of the external structure of the motor housing according to the present utility model;

FIG. 7 is a schematic view showing the internal structure of the rotor housing according to the present utility model;

FIG. 8 is a schematic representation of the construction of a valve disc of the present utility model;

FIG. 9 is a schematic view of a muffler baffle according to the present utility model;

FIG. 10 is a schematic diagram of a rotary table according to the present utility model;

FIG. 11 is a schematic diagram of a second embodiment of a rotary table according to the present utility model;

FIG. 12 is a schematic diagram of a planet carrier according to the present utility model;

FIG. 13 is a second schematic diagram of a planet carrier according to the present utility model;

FIG. 14 is a schematic view showing the external structure of an intake connecting cover according to the present utility model;

FIG. 15 is a schematic view showing the internal structure of the intake connecting cover of the present utility model;

FIG. 16 is a table comparing the cooled and uncooled temperatures of the motor in the first embodiment;

in the figure, a 1-valve base, a 101-valve seat bottom surface, a 102-A hole positioning circle, a 103-B hole positioning circle, a 104-central shaft hole, a 105-lower sealing groove, a 106-first screw hole and a 109-silencing groove;

2A-motor shell, 2B-rotor shell, 201-rotary valve cavity, 202-annular gear, 203A-motor installation cavity, 203B-rotor installation cavity, 204A-diversion trench, 204B-diversion hole trench, 205-motor baffle, 206-flange, 207-installation hole, 208-sealing screw hole;

3-valve disc, 301-sealing plane, 302-a port, 303-B port, 304-exhaust port, 305-a pilot hole post, 306-B pilot hole post;

4-silencing cover plates, 401-A guide holes, 402-B guide holes, 403-silencing holes and 404-second screw holes;

5-rotating disc, 501-centering shaft, 502-secondary gear shaft, 503-secondary small step, 504-sealed inner groove, 5041-sealed step, 5042-centering hole, 5043-separating groove;

6-a central sleeve;

7-planetary carriers, 701-sun holes, 702-sun steps, 703-primary steps, 704-primary gear shafts, 705-planetary discs, 706-secondary sun gears;

8-a first-order sun gear;

9-planetary gears;

10-motors, 10A-coils, 10B-magnetic rings, 10C-rotor support plates, 10D-bearings and 10E-rotating shafts;

11-an air inlet connecting cover, 1101-a glue filling groove, 1102-a fixing hole, 1103-an upper sealing groove, 1104-a sealing cover hole and 1105-a hemp sealing cover plate;

a 12-A connection port;

13-B connection port;

a 14-C connection port;

15-sealing gasket.

Detailed Description

Embodiments of the present utility model are described below with reference to the accompanying drawings. In this process, to ensure clarity and convenience of description, the widths of the lines or the sizes of the constituent elements in the drawings may be exaggerated.

In addition, the terms hereinafter are defined based on functions in the present utility model, and may be different according to intention of a user, an operator, or a convention. Accordingly, these terms are defined based on the entire contents of the present specification.

Embodiment one:

referring to fig. 1, an oxygen generating separating valve comprises a valve base 1, a shell component 2, a driving component, a valve disc 3, a rotating disc 5, a primary sun gear 8, a planetary component, a silencing cover plate 4 and a silencing foam plate,

wherein, the shell component 2 comprises an annular gear 202, a rotary valve cavity 201, a flange 206 and a motor shell 2A; the lower part of the annular gear 202 is connected with a rotary valve cavity 201, and the outer wall of the rotary valve cavity 201 is connected with a flange 206; the upper part of the annular gear 202 is connected with the motor shell 2A;

wherein the motor 10 is built in the motor housing 2A; the output connecting part of the motor 10 is fixedly connected with the first-stage sun gear 8; the primary sun gear 8 is used as an input part and connected with the planetary assembly;

the primary sun gear 8 and the planetary assembly are internally arranged in the annular gear 202, the lower part of the planetary assembly is connected with the rotary disk 5, and the rotary disk 5 is internally arranged in the rotary valve cavity 201;

wherein the valve disc 3 is coaxially fixed on the valve base 1;

wherein, the shell component 2 is coaxially connected with the valve base 1 and the silencing cover plate 4 in sequence through the flange 206 and is fixed together; the noise damping foam plate is placed in the noise damping groove 109 of the valve base 1, eliminating noise caused by exhaust gas.

The primary sun gear 8, the planetary assembly and the inner gear ring 202 form a planetary transmission, so that the load of the motor 10 is reduced, and the service life of the motor 10 is prolonged.

According to the technical features, the working principle of the oxygen generating valve of the present utility model is further described with reference to fig. 1, specifically with reference to fig. 3 to 6 and fig. 8 to 14, and is as follows:

firstly, the pressure swing adsorption principle is explained to help to quickly understand the working principle of the oxygen generating valve. The specific steps are as follows:

the pressure swing adsorption oxygenerator is an automatic device which uses zeolite molecular sieve as adsorbent and utilizes the principles of pressure adsorption, depressurization and desorption to adsorb and release nitrogen from air so as to separate oxygen. The zeolite molecular sieve is processed by a special hole type treatment process, the spherical particle adsorbent with micropores distributed on the surface and the inside is white, the hole type characteristic of the spherical particle adsorbent can realize the dynamic separation of O2 and N2, the separation effect of the zeolite molecular sieve on the O2 and the N2 is based on the tiny difference of the dynamic diameters of the two gases, N2 molecules have a faster diffusion rate in the micropores of the zeolite molecular sieve, the diffusion rate of O2 molecules is slow, the diffusion of water and CO2 in compressed air has little difference with nitrogen, and finally oxygen molecules are enriched from an adsorption tower.

After the air is compressed by an air compressor, the air enters an air storage tank after dust removal, oil removal and drying, the air enters an A tower through an oxygen production separation valve and an A port 302, the pressure of the A tower is increased, nitrogen molecules in the compressed air are adsorbed by a zeolite molecular sieve, unadsorbed oxygen passes through an adsorption bed, the oxygen enters the oxygen storage tank through an A gas production valve and an oxygen gas production valve, the duration is about sixty seconds, the A tower and the B tower are communicated through a pressure equalizing valve after the A suction process is finished, the pressures of the two towers reach equilibrium, the duration is 3-5 seconds, the compressed air enters the B tower through the oxygen production separation valve and the B port 303 after the pressure equalizing is finished, the pressure of the B tower is increased, the nitrogen molecules in the compressed air are adsorbed by the zeolite molecular sieve, the unadsorbed oxygen passes through the adsorption bed, passes through the B gas producing valve and the oxygen gas producing valve to enter the oxygen storage tank, the process is called B absorption, the duration is about sixty seconds, meanwhile, the oxygen absorbed by the zeolite molecular sieve in the A tower is depressurized through the exhaust port 304 and released back to the atmosphere, the process is called desorption, otherwise, the B tower is simultaneously desorbed during the adsorption of the A tower, the nitrogen released by depressurization in the molecular sieve is discharged to the atmosphere, the oxygen is swept through a normally open blowback valve to the adsorption tower which is desorbing, the oxygen in the blowback tower blows out of the adsorption tower, the process is called blowback, the process is carried out simultaneously with the desorption, after the B absorption is finished, the pressure equalizing process is carried out, the process is switched to the A absorption process, and the process is circulated all the time.

Rotation theory of operation: the motor 10 is driven by the controller to drive the rotary disk 5 to perform circular motion around the central shaft sleeve 6 through the planetary reducer.

Principle of oxygen production and nitrogen removal: wherein, C connector 14 is as the inlet connection mouth, set up on inlet connection lid 11, and when compressed air gets into C connector 14, flows into motor installation cavity 203A, and compressed air cools off the motor 10 of built-in motor installation cavity 203A, and the guiding gutter 204A on the motor installation cavity 203A flows through the planetary reducer and gets into rotatory valve pocket 201 fast, and rotary disk 5 produces an axial pressure under compressed air's atmospheric pressure effect, makes rotary disk 5 and valve disc 3 closely laminate. Under the drive of the motor, the inner holes of the central shaft 6 sleeve are alternately communicated with the inner holes of the A port 302 and the inner holes of the B port 303. When the inner hole of the central shaft sleeve 6 is communicated with the inner hole of the A port 302, namely, the sealing inner groove 504 covers the inner hole of the central shaft sleeve 6 and the A port 302, a low-pressure area is formed at the moment, and the nitrogen is discharged; the port B303 and the tower B are in an oxygen producing state. When the inner hole of the central shaft sleeve 6 is communicated with the inner hole of the B port 303, namely, the sealing inner groove 504 covers the inner hole of the central shaft sleeve 6 and the B port 303, a low-pressure area is formed at the moment, and the nitrogen is discharged; the A port 303 and the A tower are in an oxygen production state. According to the action principle, the orderly alternate implementation of the oxygen production and nitrogen removal rules is realized.

The mounting and fixing of the valve base 1 and the valve disc 3 will be described in further detail with reference to fig. 3, 4 and 8, based on the above-described operation principle, as follows:

the valve base 1 integrates a plurality of technical characteristics by adopting an injection molding process, thereby realizing integration and reducing manufacturing cost.

Wherein, the center of the valve base 1 is provided with a center shaft hole 104 matched with the center shaft sleeve 6,

wherein, two sides of the central shaft hole 104 are provided with an A hole positioning circle 102 and a B hole positioning circle 103 which have the same size and symmetrical positions;

wherein the central shaft hole 104 communicates with the sound deadening groove 109,

below the a hole positioning circle 102 and the B hole positioning circle 103, an a connection port 12 and a B connection port 13 having the same shape are provided, respectively.

The center of the valve disc 3 is provided with an exhaust port 304 matched with the center shaft sleeve 6, and two sides of the exhaust port 304 are respectively provided with an A port 302 and a B port 303 which are the same in size and symmetrical in position; the position of the A port 302 corresponds to the A hole positioning circle 102, and the position of the B port 303 corresponds to the B hole positioning circle 103; downward-protruding A positioning hole columns 305 and B positioning hole columns 306 are respectively formed below the A port 302 and the B port 303.

The central shaft sleeve 6 sequentially passes through the air outlet 304 and is fixed in the central shaft hole 104, and the fixing manner can be an interference fit manner or a glue fixing manner. The fixing mode can be a sealing fixing mode or an unsealing fixing mode. Because the inner bore of the center hub 6 is entirely in the low pressure region, it is in communication with the muffler groove 109 for exhaust. The main function of the central sleeve 6 is: on one hand, the rotary disk 5 has a central positioning function, and the rotary disk 5 is prevented from shifting in the rotating process; on the other hand, the inner hole of the central shaft sleeve 6 is communicated with the silencing groove 109, so that the exhaust effect is achieved.

Wherein, the valve disc 3 is embedded and sealed in the A hole locating circle 102 and the B hole locating circle 103 on the valve base through the A locating hole column 305 and the B locating hole column 306, and finally the bottom surface of the valve disc 3 is tightly attached to the bottom surface 101 of the valve seat. In the utility model, the fixing and sealing mode of the valve disc 3 and the valve base 1 is a high-low temperature resistant environment-friendly glue fixing and sealing mode or a mode that an O-ring is sleeved on an A locating hole column 305 and a B locating hole column 306, and the A locating hole column 305 and the B locating hole column 306 are respectively in interference fit with an A locating hole circle 102 and a B locating hole circle 103. The mode of adopting the solid seal is to avoid the air leakage of the port A302 and the port B303, and the stability and the oxygen production efficiency of oxygen production are affected.

Wherein, the end face of the valve disc 3 forms a sealing plane 301, and the sealing plane 301 is communicated with an A port 302, a B port 303 and an exhaust port 304; to ensure stability and service life of the seal, the flatness of the seal plane 301 is 0 to 8 μm, and the surface of the seal plane 301 is smooth. The valve disc 3 is made of wear-resistant materials such as alumina ceramics, copper alloy, stainless steel and the like.

In order to provide a sealing and fixing action for the valve base 1 and the housing assembly 2, reference is made to fig. 5 and 6:

a lower seal groove 105 is formed on the outer side lower surface of the valve seat bottom surface 101, and the lower seal groove 105 is used for accommodating an O-ring matched with the lower seal groove 105, and the O-ring is always contacted with the end surface of the flange 206 through the tight fitting between the flange 206 on the housing assembly 2 and the valve base 1, so that the compressed air is prevented from leaking outwards. Meanwhile, 2 or more than 2 first screw holes 106 are further formed in the outer portion of the lower sealing groove 105, and the mounting holes 207 on the flange plate 206, the first screw holes 106 and the second screw holes 404 on the silencing cover plate 4 are sequentially connected and fixed through screws of the same specification, so that the two-in-one effect is achieved, the installation is convenient, and the material cost is low.

To mount the silencing cover 4 on the valve base 1, it is further combined with fig. 9:

the silencing cover 4 is provided with a guide hole 401 and a guide hole 402 corresponding to the connection port 12 and the connection port 13, and the guide hole 401 and the guide hole 402 are sleeved in the connection port 12 and the connection port 13 so that the silencing cover 4 is attached to the bottom of the valve base 1. Meanwhile, a plurality of sound deadening holes 403 are provided in the middle of the sound deadening cover plate 4 for further eliminating noise and exhaust.

The planetary reducer is further described in detail with reference to fig. 5, 12 and 13 in conjunction with fig. 1, based on the above principle of operation, as follows:

the planetary reducer comprises an input part: first-stage sun gear 8, transmission position: ring gear 202 on planetary assembly and housing assembly 2.

Wherein the planetary assembly comprises a planet carrier 7 and a primary sun gear 8, and a planet gear 9 matched with an inner gear ring 202.

Further preferably, the planet carrier 7 is provided with a planet disc 705, the center of the planet disc 705 is provided with a sun hole 701, and the planet disc 705 downwards forms a convex secondary sun gear 706 matched with the planet gear 9;

further preferably, the planet carrier has a sun hole 701 penetrating through the planet disc 705 and the secondary sun gear 706 in sequence; the main purpose of this sun hole 701 is to center it and prevent it from shifting. In order to further reduce the friction forces occurring during the transmission, a sun step 702 is arranged above the sun hole 701, the step area of the sun step 702 being smaller than the area of the primary sun wheel 8 or smaller than the area of the secondary sun wheel 706.

Further preferably, the planet carrier has a planet disk 705 which forms a convex primary gear shaft 704 which is matched with the planet gear 9; in order to further reduce the friction area of the planetary gears 9 generated during transmission, a primary step 703 is provided between the primary gear shaft 704 and the planetary disc 705, the area of the primary step 703 being smaller than the area of the planetary gears 9.

In order to uniformly stress the planetary gears 9 during the transmission, the number of the primary gear shafts 704 is more than 2, and the primary gear shafts 704 are uniformly distributed on the same dividing circle, and the dividing circle is concentric with the sun hole 701.

Next, the rotating disk 5 will be described in further detail with reference to fig. 10 and 11 in conjunction with fig. 5, based on the above-described operation principle, as follows:

the rotary disk 5 is provided with a sealed inner groove 504, the sealed inner groove 504 comprises a separation groove 5043 and a centering hole 5042, the centering hole 5042 is arranged in the center of the rotary disk 5, and the centering hole 5042 is communicated with the separation groove 5043 laterally; the main purpose of the centering hole 5042 is to be able to move circumferentially around the central hub 6 at all times without displacement.

Still further, a sealing step 5041 connected to the centering hole 5042 and the separating groove 5043 is provided below the sealing inner groove 504;

in order to be able to seal the valve disk 3 with the rotary disk 5 well, the end face flatness of the sealing step 5041 is set to 0 to 8 μm; the flatness of the end face of the seal step 5041 is generally within 0 to 3 μm by an automatic polishing machine.

In order to ensure that the planetary reducer is coaxial with the rotary disk 5, a centering shaft 501 coaxial with the centering hole 5042 is provided above the sealed inner groove 504;

in order to facilitate the connection with the output part of the planetary reducer and the rotating disk 5, a secondary gear shaft 502 matched with the planetary gears 9 is arranged above the sealed inner groove 504, the number of the secondary gear shafts 502 is more than 2, and the secondary gear shafts 502 are uniformly distributed on the same dividing circle, and the dividing circle is concentric with the central positioning shaft 501. The rotating disc 5 can thus also be regarded as part of a planetary reducer and the connection is a power connection.

Finally, according to the above principle of operation, the housing assembly 2 is further described in detail with reference to fig. 5, 6, 14 and 15 in conjunction with fig. 1, as follows:

the housing assembly 2 comprises an annular gear 202, a rotary valve cavity 201, a flange 206 and a motor housing 2A; the lower part of the annular gear 202 is connected with a rotary valve cavity 201, and the outer wall of the rotary valve cavity 201 is connected with a flange 206; the upper part of the annular gear 202 is connected with the motor shell 2A;

the motor housing 2A comprises a motor mounting cavity 203A and an air inlet connecting cover 11, wherein the air inlet connecting cover 11 is sleeved into the motor mounting cavity 203A and is fixedly sealed in the motor mounting cavity 203A; the motor mounting chamber 203A is above the ring gear 202 and is connected to the ring gear 202.

To further describe in detail the manner of the attachment of the inlet connection cover 11 to the motor mounting cavity 203A in this example:

first, the intake connection cover 11 will be described with reference to fig. 14 and 15, as follows:

the air inlet connecting cover 11 comprises a sealing cover hole 1104 matched with the outer wall of the motor mounting cavity 203A, a sealing cover plate 1105 connected with the sealing cover hole 1104 is arranged above the sealing cover hole 1104, an upper sealing groove 1103 is arranged on the sealing cover plate 1105, the sealing cover plate 1105 is provided with a C connecting port 14 protruding upwards, and the C connecting port is communicated with the sealing cover hole 1104; and a glue filling groove 1101 is formed in the sealing cover plate 1101 and on the side face of the C connecting port 14, and a lead hole is formed in the bottom of the glue filling groove 1101. In order to enable the lead wire of the motor to pass through the lead wire hole, after the lead wire of the motor is led out, epoxy resin glue or other high-low temperature resistant environment-friendly glue is injected into the glue filling groove 1101, and the glue is solidified in the glue filling groove 1101 until a certain time. And the glue filling of the lead holes is sealed, so that the leakage of compressed air is avoided, and the stability and the oxygen production efficiency of oxygen production are ensured.

Next, a fixing hole 1102 is provided on the outer circumference of the sealing hole 11 to match the sealing screw hole 208.

Next, the motor mounting chamber 203A in the housing assembly 2 will be further described with reference to fig. 5 and 6, as follows:

more than 2 sealing screw holes 208 are formed on the circular outer wall of the motor mounting cavity 203A and are uniformly distributed.

And a sealing gasket 15 is arranged in the upper sealing groove 1103, the air inlet connecting cover 11 is attached to the end surface of the motor mounting cavity 203A through the sealing gasket 15 arranged in the upper sealing groove 1103, and the corresponding screw rod buckles the air inlet connecting cover 11 on the motor mounting cavity 203 through the fixing hole 1101 and the sealing screw hole. This achieves a sealed connection of the housing assembly 2.

In order to make the compressed air quickly enter the inside of the housing assembly 2, the inner wall of the motor installation cavity 203A is provided with guide grooves 204A communicating with the inner wall of the motor installation cavity 203A, and the number of the guide grooves 204A is more than 2.

The main purpose of incorporating the motor 10 into the motor mounting cavity 203A is to: after entering the C-port connecting pipe 14, the compressed air directly flows through the motor 10, and plays a role in rapidly cooling the motor 10. The cooling effect is shown in detail in fig. 16: at a pressure of 0.2-0.3 MPa, the temperature of the motor 10 is reduced from 123 ℃ to 81 ℃ after air cooling.

Embodiment two:

unlike the first embodiment, the following is: the motor 10 is a brushless motor or a stepping motor, and in the case of reasonable cost, performance and service life, the stepping motor is preferably selected in the second example, and the service life of the stepping motor is longer than that of the brushed motor, and in the case of reasonable load, the service life can basically reach more than 5000H. And secondly, a stepping motor is adopted to timely feed back the position of the rotating disc 5. The feedback device is set as follows:

a magnetizer such as ferrite, ndFeB and the like is embedded on the outer wall of the sealed inner groove 504 on the rotating disk 5; secondly, a Hall sensor is arranged at the corresponding position of the A connecting port 12 or the B connecting port 13, or a Hall sensor is arranged at the corresponding position of the A connecting port 12 and the B connecting port 13. The first magnetizer position sensed by the hall sensor is used as a starting point, and then how many pulses are needed for one rotation of the rotating disk 5 is calculated. When the stepping motor runs for more than one step, the position of the rotating disc 5 can be calculated by the following calculation method: current angle= (number of running pulses/number of pulses of one turn) ×360°.

Embodiment III:

unlike the first embodiment, the housing assembly 2 includes an annular gear 202, a rotary valve chamber 201, a flange 206, and a rotor housing 2B; the arrangement and placement of the ring gear 202, the rotary valve chamber 201, and the flange 206 are the same as in the first embodiment.

What is further different is: the motor 10 is split into a coil 10A and a rotor assembly.

Referring to fig. 7, in conjunction with fig. 2, a rotor housing 2B in the third example is further described, as follows:

the rotor housing 2B includes a rotor mounting chamber 203B, the rotor mounting chamber 203B is above the ring gear 202 and connected to the ring gear 202, a C connection port 14 is provided above the rotor mounting chamber 203B and the rotor mounting chamber 203B communicates with the C connection port 14. The rotor housing 2B is different from the motor housing 2A at the maximum in that the air intake connection cover 11 is not provided, and the C connection port 14 is directly communicated with the rotor mounting chamber 203B. By the integrated design, the installation cost and the manufacturing cost are saved, and if glue filling and a sealing gasket 15 are not needed, a pair of dies is reduced. At the same time, two sealing points are directly subtracted.

Wherein, rotor assembly is arranged in the rotor mounting cavity 203B, and the outer wall is provided with a coil 10A.

The rotor assembly comprises a magnetic ring 10B, a rotor support plate 10C, a bearing 10D and a rotating shaft 10E;

to further explain the combination of the rotor components in the third embodiment, the rotating shaft 10E and the magnetic ring 10B are integrated through an injection molding process, the rotating shaft 10E is located at the center of the magnetic ring 10B, the rotating shaft 10E is fixed with a bearing 10E respectively at the upper and lower sides, and the bearing 10E may be a sliding bearing, and the material may be a wear-resistant self-lubricating material or a ball bearing. The bearing 10E is fixed to the center position of the rotor support plate 10C, and the rotor support plate 10C is fixed to the inner wall of the rotor mounting chamber 203B. In order to allow the compressed air to pass through quickly, a large flow area is provided, and a plurality of flow guide holes are provided in the rotor support plate 10C, or a plurality of flow guide holes 204B are provided in the rotor mounting chamber 203B.

In comparison with the first embodiment, the cooling effect in the third embodiment is slightly worse than in the first embodiment, and the temperature after cooling is 91 °.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to those skilled in the art to understand the content of the present utility model and accordingly implement the present utility model without limiting the scope of the present utility model. All equivalent changes or modifications made in accordance with the essence of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The utility model provides an oxygen generation separating valve, includes valve base (1), casing subassembly, its characterized in that: also comprises a driving component, a valve disc (3), a rotating disc (5), a first-stage sun wheel (8), a planetary component, a silencing cover plate (4) and a silencing foam plate,

the shell assembly comprises an annular gear (202), a rotary valve cavity (201), a flange plate (206), a motor shell (2A) or a rotor shell (2B);

the lower part of the inner gear ring (202) is connected with the rotary valve cavity (201), and the outer wall of the rotary valve cavity (201) is connected with the flange plate (206);

the upper part of the inner gear ring (202) is connected with the motor shell (2A) or the rotor shell (2B);

the output connecting part of the driving assembly is fixedly connected with the first-stage sun gear (8);

the primary sun gear (8) is used as an input part and connected with the planetary assembly;

the drive assembly is an electric motor (10) or is composed of a stator and rotor assembly;

the motor (10) is internally provided with a motor shell (2A) or the stator is arranged on the outer wall of the rotor shell (2B) and the rotor assembly is internally provided with the rotor shell (2B);

the primary sun gear (8) and the planetary assembly are internally arranged in the annular gear (202), the lower part of the planetary assembly is connected with the rotary disc (5), and the rotary disc (5) is internally arranged in the rotary valve cavity (201);

the valve disc (3) is coaxially fixed on the valve base (1);

the shell component is coaxially connected with the valve base (1) and the silencing cover plate (4) in sequence through the flange plate (206) and is fixed together;

the sound damping foam plate is arranged in a sound damping groove (109) of the valve base (1).

2. The oxygen-generating separation valve of claim 1, wherein: the center of the valve base (1) is provided with a central shaft hole (104) matched with the central shaft sleeve (6), and both sides of the central shaft hole (104) are provided with an A hole positioning circle (102) and a B hole positioning circle (103) which are the same in size and symmetrical in position;

the central shaft hole (104) is communicated with the silencing groove (109);

and an A connecting port (12) and a B connecting port (13) with the same shape are respectively arranged below the A hole positioning circle (102) and the B hole positioning circle (103).

3. An oxygen-generating separation valve as defined in claim 2, wherein: the center of the valve disc (3) is provided with an exhaust port (304) matched with the center shaft sleeve (6), and two sides of the exhaust port (304) are respectively provided with an A port (302) and a B port (303) which are the same in size and symmetrical in position;

the position of the opening A (302) corresponds to the hole A positioning circle (102), and the position of the opening B (303) corresponds to the hole B positioning circle (103);

a positioning hole column (305) and a positioning hole column (306) which are downwards protruded are respectively formed below the opening A (302) and the opening B (303);

the valve disc (3) is embedded and fixedly sealed in an A hole locating circle (102) and a B hole locating circle (103) on the valve base (1) through the A locating hole column (305) and the B locating hole column (306).

4. An oxygen-generating separation valve as defined in claim 3, wherein: the end face of the valve disc (3) is provided with a sealing plane (301), and the sealing plane (301) is respectively connected with an A port (302), a B port (303) and an exhaust port (304);

flatness of the sealing plane (301): 0-8 mu m.

5. The oxygen-generating separation valve of claim 1, wherein: the planetary assembly comprises a planet carrier (7) and a planet gear (9) matched with the primary sun gear (8) and the annular gear (202);

a planetary disc (705) is arranged on the planet carrier (7), a sun hole (701) is arranged in the center of the planetary disc (705), and a convex secondary sun wheel (706) matched with the planetary gear (9) is downwards formed on the planetary disc (705);

the sun hole (701) sequentially penetrates through the planetary disc (705) and the secondary sun gear (706);

the planetary plate (705) forms a convex primary gear shaft (704) which is matched with the planetary gear (9) upwards;

the number of the primary gear shafts (704) is more than 2, and the primary gear shafts (704) are uniformly distributed on the same dividing circle, and the dividing circle is concentric with the sun hole (701).

6. The oxygen-generating separation valve of claim 1, wherein: the rotary disk (5) is provided with a sealed inner groove (504), the sealed inner groove (504) comprises a separation groove (5043) and a centering hole (5042), the centering hole (5042) is arranged in the center of the rotary disk (5), and the centering hole (5042) is laterally communicated with the separation groove (5043);

a sealing step (5041) connected with the centering hole (5042) and the separation groove (5043) is arranged below the sealing inner groove (504);

end surface flatness of the sealing step (5041): 0-8 mu m;

a center positioning shaft (501) coaxial with the centering hole (5042) is arranged above the sealed inner groove (504);

and a secondary gear shaft (502) matched with the planetary gears (9) is arranged above the sealed inner groove (504), the number of the secondary gear shafts (502) is more than 2, and the secondary gear shafts are uniformly distributed on the same dividing circle, and the dividing circle is concentric with the center positioning shaft (501).

7. The oxygen-generating separation valve of claim 1, wherein:

the motor shell (2A) comprises a motor mounting cavity (203A) and an air inlet connecting cover (11), wherein the air inlet connecting cover (11) is sleeved into the motor mounting cavity (203A) and fixedly sealed in the motor mounting cavity (203A);

the motor mounting cavity (203A) is arranged above the annular gear (202) and is connected with the annular gear (202).

8. The oxygen-generating separation valve of claim 7, wherein: the inner wall of the motor installation cavity (203A) is provided with a diversion trench (204A) communicated with the inner wall of the motor installation cavity (203A).

9. The oxygen-generating separation valve of claim 7, wherein: the air inlet connecting cover (11) comprises a sealing cover hole (1104) matched with the outer wall of the motor mounting cavity (203A), a sealing cover plate (1105) connected with the sealing cover hole (1104) is arranged above the sealing cover hole (1104) and is connected with the sealing cover plate (1105), an upper sealing groove (1103) is arranged on the sealing cover plate (1105), the sealing cover plate (1105) is provided with a C connecting port (14) protruding upwards, and the C connecting port (14) is communicated with the sealing cover hole (1104);

and a glue filling groove (1101) is formed in the sealing cover plate (1105) and on the side face of the C connecting port (14), and a lead hole is formed in the bottom of the glue filling groove (1101).

10. The oxygen-generating separation valve of claim 1, wherein: the rotor housing (2B) comprises a rotor mounting cavity (203B), the rotor mounting cavity (203B) is arranged above the annular gear (202) and is connected with the annular gear (202), a C connection port (14) is arranged above the rotor mounting cavity (203B), and the rotor mounting cavity (203B) is communicated with the C connection port (14).