Rotary air distribution valve

Abstract

The invention relates to the technical field of air distribution valves, in particular to a rotary air distribution valve. Comprising a rotating motor, a ceramic rotating body, a first control valve body and a second control valve body, the rotating motor is arranged on the first control valve body, the output end of the rotating motor is connected with the ceramic rotating body, the first control valve body is connected with the second control valve body, the first control valve body is provided with a gas inlet, and the second control valve body is provided with a nitrogen discharge port and a first gas outlet. The ceramic rotating body is provided with an air inlet channel and an exhaust channel. The ceramic rotating body is controlled to rotate through the rotating motor, and whether the air inlet, the first air outlet and the exhaust port are communicated or not is controlled, so that intermittent air supply and exhaust are performed on the molecular sieve tower connected with the first air outlet. Compared with the technical scheme that the on-off of gas is controlled through an electromagnetic valve, the structure is simple and reliable, large pre-pressing is not needed during starting, and noise is low.

Description

Technical Field

[0001] The present invention relates to the technical field of air separator valves, and in particular to a rotary air separator valve. Background Art

[0002] Currently, oxygen concentrators on the market primarily utilize the pressure swing adsorption principle, using molecular sieves as the adsorbent and air as the feedstock to produce enriched oxygen. Most existing oxygen concentrators utilize solenoid valves to control the flow of gas. This technical solution is subject to drawbacks: high noise levels, complex structure, and the requirement for pre-pressurization during startup. In areas with thin air in high altitudes, insufficient pre-pressurization can lead to startup failures. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a rotary gas distributor valve for an oxygen concentrator which has a simple structure, low cost, and is safe and reliable.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A rotary gas distribution valve comprises a rotary motor, a ceramic rotor, a first control valve body, and a second control valve body, wherein the rotary motor is disposed on the first control valve body, an output end of the rotary motor is connected to the ceramic rotor, the first control valve body is connected to the second control valve body, the first control valve body is provided with an air inlet, the second control valve body is provided with a nitrogen exhaust port and a first air outlet, and the ceramic rotor is provided with an air inlet channel and an exhaust channel;

[0006] When the ceramic rotator rotates to the first position, the air inlet is connected to the first air outlet through the air inlet channel, and the first air outlet is disconnected from the nitrogen exhaust port;

[0007] When the ceramic rotor rotates to the second position, the air inlet is disconnected from the first air outlet, and the first air outlet is connected to the nitrogen exhaust port through the exhaust channel.

[0008] Optionally, the second control valve body is further provided with a second air outlet;

[0009] When the ceramic rotor rotates to the first position, the air inlet is connected to the first air outlet through the air inlet channel, and the second air outlet is connected to the nitrogen exhaust port through the exhaust channel;

[0010] When the ceramic rotor rotates to the second position, the air inlet is communicated with the second air outlet through the air inlet passage, and the first air outlet is communicated with the nitrogen exhaust port through the exhaust passage.

[0011] Optionally, the output end of the rotating motor is connected to the ceramic rotor through an adjustment block, the adjustment block is slidingly connected to the ceramic rotor, and an elastic pressing member is also provided between the adjustment block and the ceramic rotor for pressing the ceramic rotor against the inner wall of the second control valve.

[0012] Optionally, the elastic pressing member is a spring.

[0013] Optionally, the first control valve is further provided with at least one functional port.

[0014] The function port is used to input other gases or gases with droplets.

[0015] Optionally, the nitrogen exhaust port and the first gas outlet are both located at the bottom of the second control valve body.

[0016] Optionally, a spacer is provided between the bottom of the second control valve and the ceramic rotor.

[0017] Optionally, the thickness of the cushion block is a, the distance from the bottom of the second control valve body to the connection point between the second control valve body and the first control valve is b, and a>b.

[0018] Optionally, a sealing ring is also provided on the gasket, the upper surface of the sealing ring corresponds to the protrusion of the inner wall of the first control valve body, the lower surface of the sealing ring corresponds to the upper surface of the gasket, and a positioning groove corresponding to the sealing ring is also provided on the upper surface of the gasket.

[0019] Optionally, a sealing patch is further provided between the pad and the second control valve body.

[0020] Adding additional spacers to the first and second control valve bodies creates a dual seal. The gas within the first and second control valve bodies is sealed by the sealing ring, spacer, and sealing patch. The connection between the first and second control valve bodies acts as a secondary seal. While maintaining a good seal, the precision of the spacer alone can be reduced, thereby lowering the precision requirements for the connection between the first and second control valve bodies and reducing component manufacturing costs.

[0021] The beneficial technical effect of this invention is that the ceramic rotor is controlled by a rotary motor to control the connectivity between the air inlet, the first air outlet, and the exhaust port, thereby intermittently supplying and exhausting gas to the molecular sieve column connected to the first air outlet. Compared with technical solutions that control the flow of gas through solenoid valves, this structure is simpler and more reliable, does not require a large pre-pressure during startup, and produces low noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the ceramic rotor and the spacer in the present invention;

[0026] Figure 5 Schematic diagram of the relative positional relationship between the ceramic rotator and the pad when the ceramic rotator is in the first position in the present invention;

[0027] Figure 6 Schematic diagram of the relative positional relationship between the ceramic rotator and the pad when the ceramic rotator is located at the second position in the present invention.

[0028] Reference numerals: 1 - rotating motor, 2 - ceramic rotor, 3 - first control valve body, 4 - spacer, 5 - second control valve body, 6 - air inlet, 7 - function port, 8 - first air outlet, 9 - second air outlet, 10 - nitrogen exhaust port, 11 - air inlet passage, 12 - exhaust passage. 13 - adjustment block, 14 - spring, 15 - sealing ring, 16 - sealing patch. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0030] Reference Figure 1-4 As shown, a rotary air distribution valve includes a rotary motor 1, a ceramic rotor 2, a first control valve body 3, a pad 4 and a second control valve body 5.

[0031] The rotating motor 1 is mounted on the first control valve body 3, the output end of which is connected to the ceramic rotor 2. The first control valve body 3 is fixedly connected to the second control valve body 5 by bolts. The first control valve body 3 is provided with an air inlet 6 and a functional port 7 on the opposite side. The second control valve body 5 is provided with a nitrogen exhaust port 10, a first air outlet 8, and a second air outlet 9. The ceramic rotor 2 is provided with an air intake channel 11 and an exhaust channel 12. The nitrogen exhaust port 10 and the first air outlet 8 are both located at the bottom of the second control valve body 5.

[0032] The output end of the rotating motor 1 is connected to the ceramic rotor 2 through an adjustment block 13 , and the adjustment block 13 is slidably connected to the ceramic rotor 2 . A spring 14 is provided between the adjustment block 13 and the ceramic rotor 2 for pressing the ceramic rotor 2 against the pad 4 .

[0033] The gasket 4 is located between the ceramic rotor 2 and the second control valve body 5. The gasket 4 is provided with channels corresponding to the nitrogen exhaust port 10, the first air outlet 8, and the second air outlet 9. The gasket 4 is also provided with a sealing ring 15. The upper surface of the sealing ring 15 corresponds to the protrusion of the inner wall of the first control valve body 3, and the lower surface of the sealing ring 15 corresponds to the upper surface of the gasket 4. The upper surface of the gasket 4 is also provided with a positioning groove corresponding to the sealing ring 15. A sealing patch 16 is also provided between the gasket 4 and the second control valve body 5. The thickness of the gasket 4 is a, and the distance from the bottom of the second control valve body 5 to the connection between the second control valve body 5 and the first control valve body 3 is b, and a is slightly larger than b.

[0034] Adding an additional spacer 4 to the first and second control valve bodies 3, 5 creates a double seal. The gas within the first and second control valve bodies 3, 5 is sealed by the sealing ring 15, spacer 4, and sealing patch 16. The connection between the first and second control valve bodies 3, 5 serves as a secondary seal. While maintaining a sufficient seal, the precision of the spacer 4 alone can be guaranteed, thereby reducing the precision requirements for the connection between the first and second control valve bodies 3, 5 and lowering component manufacturing costs.

[0035] When in use, air enters the cavity of the first control valve body 3 from the air inlet 6. Figure 5 As shown, when the ceramic rotor 2 rotates to the first position, the air inlet 6 is only connected to the first air outlet 8 through the air inlet channel 11, and the second air outlet 9 is only connected to the nitrogen exhaust port 10 through the exhaust channel 12;

[0036] Reference Figure 6 As shown, when the ceramic rotor 2 rotates to the second position, the air inlet 6 is only connected to the second air outlet 9 through the air inlet channel 11 , and the first air outlet 8 is only connected to the nitrogen exhaust port 10 through the exhaust channel 12 .

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A rotary air distributor valve, characterized in that: The invention comprises a rotary motor, a ceramic rotor, a first control valve body and a second control valve body, wherein the rotary motor is arranged on the first control valve body, the output end of the rotary motor is connected to the ceramic rotor, the first control valve body is connected to the second control valve body, the first control valve body is provided with an air inlet, the second control valve body is provided with a nitrogen exhaust port and a first air outlet, and the ceramic rotor is provided with an air inlet channel and an exhaust channel; When the ceramic rotor rotates to the first position, the air inlet is connected to the first air outlet through the air inlet channel, and the first air outlet is disconnected from the nitrogen exhaust port. When the ceramic rotor rotates to the second position, the air inlet is disconnected from the first air outlet, and the first air outlet is connected to the nitrogen exhaust port through the exhaust channel.

2. A rotary gas distributor valve according to claim 1, characterized in that: The second control valve body is also provided with a second air outlet; When the ceramic rotor rotates to the first position, the air inlet is connected to the first air outlet through the air inlet channel, and the second air outlet is connected to the nitrogen exhaust port through the exhaust channel; When the ceramic rotor rotates to the second position, the air inlet is communicated with the second air outlet through the air inlet passage, and the first air outlet is communicated with the nitrogen exhaust port through the exhaust passage.

3. The rotary air distribution valve according to claim 1, characterized in that: The output end of the rotating motor is connected to the ceramic rotator through an adjustment block, and the adjustment block is slidably connected to the ceramic rotator. An elastic pressing member is also provided between the adjustment block and the ceramic rotator for pressing the ceramic rotator against the inner wall of the second control valve.

4. A rotary air distribution valve according to claim 3, characterized in that: The elastic pressing member is a spring.

5. The rotary air distribution valve according to claim 4, characterized in that: The first control valve is also provided with at least one functional port.

6. A rotary gas distributor valve according to any one of claims 1 to 5, characterized in that: The nitrogen exhaust port and the first gas outlet are both located at the bottom of the second control valve body.

7. The rotary air distribution valve according to claim 6, characterized in that: A cushion block is provided between the bottom of the second control valve and the ceramic rotor.

8. The rotary air distribution valve according to claim 7, characterized in that: The thickness of the cushion block is a, the distance from the bottom of the second control valve body to the connection point between the second control valve body and the first control valve is b, and a>b.

9. The rotary air distribution valve according to claim 8, characterized in that: A sealing ring is also provided on the gasket, the upper surface of the sealing ring corresponds to the protrusion of the inner wall of the first control valve body, the lower surface of the sealing ring corresponds to the upper surface of the gasket, and a positioning groove corresponding to the sealing ring is also provided on the upper surface of the gasket.

10. A rotary gas distribution valve according to claim 8, characterized in that. A sealing patch is also provided between the cushion block and the second control valve body.

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