Normally-closed horizontal oxygen production valve

Abstract

The utility model discloses a normally-closed horizontal oxygen production valve which comprises a valve body. Two pistons and two miniature electromagnetic valves; a spring fixing seat; a spring fixing seat is arranged on the piston, an inner movable rod is arranged in each fixing seat, a spring is connected between each inner movable rod and the corresponding spring fixing seat, the outer wall of the inner end of each inner movable rod is sleeved with a first sealing gasket, an end connecting rod is arranged between each inner movable rod and the piston, and a second sealing gasket is arranged on the outer wall of the inner end of each inner movable rod. The diaphragm is arranged on the outer wall of the outer end of the end connecting rod in a sleeving mode, and a second sealing gasket is arranged on the outer wall of the inner end of the end connecting rod in a sleeving mode. The normally-closed horizontal oxygen generation valve is reasonable in structural design, the two sets of inner movable rods and the end connecting rods are adopted as the connecting rods, assembling is convenient, in addition, fins arranged on the outer walls of the inner movable rods are beneficial for improving guidance quality, and due to the application of the two springs, the valve body works stably, and the service life is long.

Description

Technical Field

[0001] The utility model relates to a normally closed horizontal oxygen-making valve. Background Art

[0002] As a core component of an oxygen concentrator, the oxygen valve can ensure uninterrupted oxygen supply. Therefore, the demand for oxygen valves is increasing, and the performance requirements for oxygen valves are also getting higher and higher. Currently, the oxygen valves on the market have the following problems: poor stability and complicated assembly steps. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a normally closed horizontal oxygen-making valve.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a normally closed horizontal oxygen-making valve, comprising:

[0005] The valve body has R port, A port, P port, B port and S port arranged from left to right at the bottom of the valve body. The left and right ports of the valve body are both provided with diaphragms and fixed seats fixed by end covers.

[0006] Two pistons are respectively installed inside the end cover;

[0007] Two micro solenoid valves are respectively installed at the outer ends of the two end covers;

[0008] A power cord connected to the micro solenoid valve;

[0009] A spring fixing seat is arranged in the middle part of the valve body;

[0010] It is characterized in that: an inner movable rod is provided inside the fixed seat, a spring is connected between the inner movable rod and the spring fixed seat, a first sealing gasket is sleeved on the outer wall of the inner end of the inner movable rod, an end connecting rod is provided between the inner movable rod and the piston, the diaphragm is sleeved on the outer wall of the outer end of the end connecting rod, and a second sealing gasket is sleeved on the outer wall of the inner end of the end connecting rod.

[0011] In the above structure, a plurality of fins evenly distributed in a circumference are provided on the outer wall of the inner movable rod.

[0012] In the above structure, a first horizontal thickened support plate is provided at the top of the interior of the A port.

[0013] In the above structure, a second horizontal thickened support plate is provided at the top of the interior of the B port.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the normally closed horizontal oxygen-making valve of the utility model has a reasonable structural design, adopts two groups of inner movable rods and end connecting rods as connecting rods, and is easy to assemble. In addition, the fins arranged on the outer wall of the inner movable rod help to improve the guiding performance, and the application of two springs makes the valve body work stably and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a normally closed horizontal oxygen-generating valve according to an embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a fixed seat in a normally closed horizontal oxygen-making valve according to an embodiment of the utility model;

[0017] Figure 3 It is a structural schematic diagram of an inner movable rod in a normally closed horizontal oxygen-generating valve according to an embodiment of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of a normally closed horizontal oxygen-making valve end connecting rod.

[0019] In the figure:

[0020] 1. Valve body; 2. R port; 3. A port; 4. P port; 5. B port; 6. S port; 7. End cover; 8. Diaphragm; 9. Fixed seat; 10. Piston; 11. Micro solenoid valve; 12. Power cord; 13. Spring fixed seat; 14. Inner movable rod; 15. Spring; 16. First sealing gasket; 17. End connecting rod; 18. Second sealing gasket; 19. Fin; 20. First horizontal thickened support plate; 21. Second horizontal thickened support plate. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figure 1-4 As shown, a normally closed horizontal oxygen-making valve comprises:

[0023] A valve body 1, wherein R port 2, A port 3, P port 4, B port 5 and S port 6 are arranged in sequence from left to right below the valve body 1, and a diaphragm 8 and a fixing seat 9 fixed by an end cover 7 are arranged in the left and right ports of the valve body 1;

[0024] Two pistons 10 are respectively installed inside the end cover 7;

[0025] Two micro solenoid valves 11 are respectively installed at the outer ends of the two end covers 7;

[0026] A power line 12 connected to the micro solenoid valve 11;

[0027] A spring fixing seat 13 is arranged in the middle part of the valve body 1;

[0028] It is characterized in that: an inner movable rod 14 is provided inside the fixed seat 9, a spring 15 is connected between the inner movable rod 14 and the spring fixed seat 13, a first sealing gasket 16 is sleeved on the outer wall of the inner end of the inner movable rod 14, an end connecting rod 17 is provided between the inner movable rod 14 and the piston 10, the diaphragm 8 is sleeved on the outer wall of the outer end of the end connecting rod 17, and a second sealing gasket 18 is sleeved on the outer wall of the inner end of the end connecting rod 17.

[0029] In the above structure, a plurality of fins 19 evenly distributed in a circumference are provided on the outer wall of the inner movable rod 14 .

[0030] In the above structure, a first horizontal thickened support plate 20 is provided at the top end inside the A port 3 .

[0031] In the above structure, a second horizontal thickened support plate 21 is provided at the top end inside the B port 5 .

[0032] When the normally closed horizontal oxygen-making valve of the utility model is in operation, the P port of the oxygen-making valve is connected to the gas source, the AB ports are respectively connected to the molecular sieve AB, and the RS hole is connected to the exhaust muffler. When the left micro-solenoid valve is powered off and the right micro-solenoid valve is powered on, another gas entering from the P port enters the right end cover cavity through the right micro-solenoid valve to move the right piston to the left, thereby pushing the right end connecting rod to move to the left, so that the PB cavity is opened and the BS cavity is closed. At this time, the nitrogen and other gases in the molecular sieve A are discharged from the A port through the exhaust muffler. When the left micro-solenoid valve is powered on and the right micro-solenoid valve is powered off, another gas entering from the P port enters the left end cover cavity through the left micro-solenoid valve to move the left piston to the right, thereby pushing the left end connecting rod to move to the right, so that the PA cavity is opened and the AR cavity is closed. At this time, the nitrogen and other gases in the molecular sieve B are discharged from the S port through the exhaust muffler.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A normally closed horizontal oxygen-generating valve, comprising: A valve body (1), wherein an R port (2), an A port (3), a P port (4), a B port (5) and an S port (6) are arranged in sequence from left to right below the valve body (1), and a diaphragm (8) and a fixing seat (9) fixed by an end cover (7) are arranged in the left and right ports of the valve body (1); Two pistons (10) are respectively installed inside the end cover (7); Two micro solenoid valves (11) are respectively installed at the outer ends of the two end covers (7); A power line (12) connected to the micro electromagnetic valve (11); A spring fixing seat (13) is arranged in the middle part of the valve body (1); The invention is characterized in that: an inner movable rod (14) is provided inside the fixing seat (9), a spring (15) is connected between the inner movable rod (14) and the spring fixing seat (13), a first sealing gasket (16) is sleeved on the outer wall of the inner end of the inner movable rod (14), an end connecting rod (17) is provided between the inner movable rod (14) and the piston (10), the diaphragm (8) is sleeved on the outer wall of the outer end of the end connecting rod (17), and a second sealing gasket (18) is sleeved on the outer wall of the inner end of the end connecting rod (17).

2. The normally closed horizontal oxygen-generating valve according to claim 1, characterized in that: A plurality of fins (19) evenly distributed in a circumference are provided on the outer wall of the inner movable rod (14).

3. The normally closed horizontal oxygen-generating valve according to claim 1, characterized in that: A first horizontal thickened support plate (20) is provided at the top end inside the A opening (3).

4. The normally closed horizontal oxygen-generating valve according to claim 1, characterized in that: A second horizontal thickened support plate (21) is provided at the top end inside the B port (5).

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