Purity keeping device of medical oxygen generator

Abstract

The utility model discloses a purity keeping device for a medical oxygen generator, which comprises a tower A and a tower B. The tower A and the tower B are respectively connected with an air outlet valve through an air outlet pipe, the tower A and the tower B are also connected through a return pipe, and a cut-off mechanism is arranged at the joint of the return pipe. By arranging the return pipe between the tower A and the tower B and arranging the cut-off mechanism at the joint of the return pipe, the problem that the oxygen production purity is reduced when the oxygen generator is started after shutdown and energy conservation can be effectively prevented, and the output purity of medical oxygen is ensured.

Description

Technical Field

[0001] The utility model relates to a medical oxygen concentrator, in particular to a purity maintaining device for the medical oxygen concentrator. Background Art

[0002] Medical oxygen concentrators are generally used immediately after production. When the hospital's oxygen demand is less than the output of a device, it is generally necessary to shut down for energy saving. When the pressure reaches a low point, the oxygen concentrator restarts to continuously ensure the supply of medical oxygen. When it is shut down for energy saving and then restarted, the oxygen concentration will decrease. This is determined by the characteristics of the PSA oxygen concentrator. Generally, the concentration is stable after 30 minutes of startup, and the continuous oxygen production state meets the standard requirements. If a purity maintenance device is not installed, the low-purity oxygen just after startup will be intercepted and remade by the reflux device, and the meaning of shutting down for energy saving will no longer exist. Utility Model Content

[0003] In order to solve the above problems, the following technical solutions are proposed:

[0004] A purity maintenance device for a medical oxygen concentrator comprises a tower A and a tower B. Tower A and tower B are respectively connected to an outlet valve through an outlet pipe. Tower A and tower B are also connected through a reflux pipe. A cut-off mechanism is arranged at the interface of the reflux pipe. The cut-off mechanism comprises a filler and a sealing cavity. The sealing cavity is embedded in the reflux pipe and protrudes toward the outside of the reflux pipe. A pressing block is arranged in the sealing cavity. The periphery of the pressing block is tightly fitted with the sealing cavity. The pressing block slides in the sealing cavity, and the bottom of the pressing block abuts against the filler.

[0005] Furthermore, the filler is made of rubber foam.

[0006] Furthermore, it also includes a telescopic rod, which is arranged outside the sealed cavity, and the telescopic end of the telescopic rod passes through the sealed cavity and is fixedly connected to the pressing block.

[0007] Furthermore, it also includes units and sensors. Sensors are respectively arranged in Tower A and Tower B, and the sensors and telescopic rods are electrically connected to the control unit.

[0008] The beneficial effects of the utility model are as follows:

[0009] Purity maintenance: By setting up a reflux pipe between Tower A and Tower B and setting a cut-off mechanism at the reflux pipe interface, the problem of reduced oxygen purity when the oxygen generator is restarted after shutdown can be effectively prevented, thereby ensuring the output purity of medical oxygen.

[0010] Filler selection: The filler is made of rubber foam material, which has good extrudability and softness, and is conducive to better adaptation and adjustment during operation.

[0011] Sealing structure: The setting of the sealing cavity and the pressure block in the sealing cavity can effectively prevent gas leakage and ensure that the flow of gas in the reflux pipe is well controlled.

[0012] Telescopic rod: The setting of the telescopic rod allows convenient adjustment and control outside the sealed chamber to adapt to different working situations.

[0013] Telecommunications connection: By installing sensors in Tower A and Tower B and connecting the sensors, telescopic rods and control units via telecommunications, real-time monitoring and control of the system status can be achieved, thus improving the intelligence of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the reflux pipe interface in the utility model;

[0016] The reference numerals are as follows: 11, tower A; 12, tower B; 2, control unit; 21, sensor; 3, shut-off mechanism; 311, filler; 312, pressing block; 313, telescopic rod; 314, sealing chamber; 32, reflux pipe; 4, air outlet valve. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] A purity maintenance device for a medical oxygen concentrator includes a tower A 11 and a tower B 12, wherein the towers A 11 and B 12 are respectively connected to an outlet valve 4 through an outlet pipe. The tower A 11 and the tower B 12 are also connected through a reflux pipe 32, and a cut-off mechanism 3 is provided at the interface of the reflux pipe 32. The cut-off mechanism 3 includes a filler 311. The filler 311 is made of rubber foam. It also includes a sealed cavity 314, which is embedded in the reflux pipe 32 and protrudes toward the outside of the reflux pipe 32. A pressing block 312 is provided in the sealed cavity 314, and the surrounding of the pressing block 312 is tightly fitted with the sealed cavity 314. The pressing block 312 slides in the sealed cavity 314, and the bottom of the pressing block 312 abuts against the filler 311. It also includes a telescopic rod 313, which is arranged outside the sealed cavity 314, and the telescopic end of the telescopic rod 313 passes through the sealed cavity 314 and is fixedly connected to the pressing block 312. It also includes a unit and a sensor 21. The A tower 11 and the B tower 12 are respectively provided with a sensor 21. The sensor 21 and the telescopic rod 313 are both electrically connected to the control unit 2.

[0021] Oxygen generator operation: Tower A 11 and Tower B 12 in the oxygen generator respectively carry out oxygen production processes to produce high-purity oxygen.

[0022] Energy saving during shutdown: When the oxygen demand of the hospital is less than the output of one device, it is necessary to shut down to save energy. During shutdown, the pressing block 312 of the sealing chamber 314 abuts against the filler 311, and the reflux channel between the A tower 11 and the B tower 12 is cut off through the filler 311 made of rubber foam.

[0023] Purity maintenance: During the shutdown process, the sensor 21 monitors the purity of oxygen production. When the shutdown condition is reached, the control unit 2 causes the telescopic rod 313 to extend and retract, so that the interception mechanism 3 outside the sealed cavity 314 opens the reflux channel. At this time, the softness and extrudability of the filler 311 allow the reflux channel to be quickly reestablished, and the selection of the filler 311 ensures the balance and regulation of the gas in the reflux pipe 32 to maintain the high purity of the oxygen.

[0024] Restart: When the oxygen demand in the hospital increases and the oxygen generator is restarted, the control of the telescopic rod 313 and the sealed chamber 314 ensures that the reflux channel will not cause the oxygen purity to decrease when it is restarted, thereby achieving shutdown energy saving while maintaining the purity of gas output.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A purity maintenance device for a medical oxygen concentrator, comprising a tower A (11) and a tower B (12), wherein the tower A (11) and the tower B (12) are connected to an outlet valve (4) via an outlet pipe, respectively, and characterized in that: The A tower (11) and the B tower (12) are also connected via a reflux pipe (32). A cut-off mechanism (3) is provided at the interface of the reflux pipe (32). The cut-off mechanism (3) comprises a filler (311) and a sealing cavity (314). The sealing cavity (314) is embedded in the reflux pipe (32) and protrudes toward the outside of the reflux pipe (32). A pressing block (312) is provided in the sealing cavity (314). The periphery of the pressing block (312) is tightly fitted with the sealing cavity (314). The pressing block (312) slides in the sealing cavity (314), and the bottom of the pressing block (312) abuts against the filler (311).

2. The purity maintenance device for a medical oxygen concentrator according to claim 1, characterized in that: The filler (311) is made of rubber foam.

3. The purity maintenance device for a medical oxygen concentrator according to claim 1, characterized in that: It also includes a telescopic rod (313), wherein the telescopic rod (313) is arranged outside the sealed cavity (314), and the telescopic end of the telescopic rod (313) passes through the sealed cavity (314) and is fixedly connected to the pressing block (312).

4. The purity maintenance device for a medical oxygen concentrator according to claim 3, characterized in that: It also includes a unit and a sensor (21), wherein the A tower (11) and the B tower (12) are respectively provided with a sensor (21), and the sensor (21) and the telescopic rod (313) are both electrically connected to the control unit (2).

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