Energy-saving backflow device of medical oxygen production equipment

Abstract

The utility model discloses an energy-saving reflux device for medical oxygen generating equipment, which comprises an oxygen generator main body, a compressor is arranged in the oxygen generator main body, the compressor is connected with a primary filtering device through a pipeline, and the primary filtering device is connected with a first adsorption tower and a second adsorption tower through pipelines and is controlled by a three-way valve. Molecular sieves are arranged in the adsorption towers, the first adsorption tower and the second adsorption tower are connected with a buffer tank through pipelines and controlled through a four-way valve, the buffer tank is connected with a finished product pipe, the finished product pipe is connected with a return pipe, the tail end of the return pipe is connected to the fourth end of the four-way valve, and the tail end of the finished product pipe is detachably connected with a filter pipe. A filter element is mounted in the filter pipe, and the finished product pipe is connected with the filter pipe through a clamping sleeve stop valve; the finished product pipe and the filter pipe are connected through the clamping sleeve stop valve, the filter element is convenient to disassemble and replace, the problems of turbulence, energy consumption and large noise in a pipeline in the prior art are solved, and the silencing plate, the buzzer and other devices are additionally arranged on the basis of existing oxygen production equipment, so that the oxygen production equipment is more suitable for a medical environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical oxygen generating equipment, and specifically relates to an energy-saving backflow device for medical oxygen generating equipment. BACKGROUND

[0002] The working principle of the medical oxygen generator is that first, the compressor compresses the air inhaled from the outside to a high pressure, and then pumps it into the adsorption tower. The adsorption tower is provided with molecular sieve. The molecular sieve is a kind of porous material with selective adsorption capacity, which can adsorb nitrogen, carbon dioxide and other impurities in the air, and let the oxygen which is not easy to be adsorbed pass through, so as to realize the separation of oxygen and impurities. The adsorption tower inputs the oxygen separated into the buffer tank for temporary storage through the buffer pipe. After the air is separated by the molecular sieve, the concentration of oxygen is significantly improved to meet the standard for medical use. In addition, when the molecular sieve bed is saturated, it needs to be regenerated. This is usually done by reducing the bed pressure to desorb and discharge the impurities adsorbed on the molecular sieve, thereby restoring the adsorption capacity of the molecular sieve. The above process is usually carried out in a cycle in the medical oxygen generator to ensure continuous production of high-concentration oxygen.

[0003] Some medical oxygen generators are also provided with a backflow system. The basic principle of energy-saving backflow is that during the oxygen generation process, after the adsorption tower is saturated, it needs to be regenerated. The oxygen in the buffer tank is input into the top of the adsorption tower through the backflow pipe, and the adsorption bed is flushed from top to bottom to accelerate the desorption process of nitrogen, thereby improving the subsequent adsorption efficiency and reducing the energy consumption required for regeneration. Or the oxygen with a concentration that does not meet the requirements is backflowed into the adsorption tower for further separation and purification operation until the oxygen concentration in the buffer tank meets the preset requirements.

[0004] The utility model patent CN220918595U discloses an easy-to-operate energy-saving backflow device for medical oxygen generating equipment, which comprises a bottom plate, a buffer tank and an adsorption tower arranged on the upper end of the bottom plate. An air inlet assembly is arranged on the bottom plate, and a backflow assembly is arranged on the air inlet port of the adsorption tower. The bottom plate comprises a baffle fixedly installed on the upper end of the bottom plate. The air inlet assembly comprises a bearing block fixedly installed on the rear end of the baffle. The energy-saving backflow device for medical oxygen generating equipment is compact, occupies less area, and facilitates quick replacement of the filter structure, and is easy to operate.

[0005] The inventor believes that the above-mentioned technology has the following defects: in the above-mentioned technology, the inner and outer walls of the filter pipe are provided with screw grooves, and the inner wall of the screw groove is provided with a threaded connection pipe. This design of multiple threads penetrating each other causes the existence of column structures in the gas pipeline. Although it is convenient to disassemble the filter pipe, the column structures in the pipeline cause multiple Karman vortex streets, which change the laminar flow in the pipeline into complex turbulent flow, thereby increasing the energy consumption and causing the noise to become larger, which does not meet the working environment of the medical oxygen generating equipment, and therefore it is not practical. SUMMARY

[0006] To solve the problems raised in the background art, the utility model provides a medical oxygen generating equipment energy saving backflow device, which has the characteristics of significantly reducing energy consumption and improving waste heat utilization rate.

[0007] In order to achieve at least one of the above purposes, the utility model adopts the technical scheme that:

[0008] A medical oxygen generating equipment energy saving backflow device, comprising an oxygen generator main body, a compressor is installed in the oxygen generator main body, the compressor is connected with a primary filter device through a pipeline, the primary filter device is connected with a first adsorption tower and a second adsorption tower through a pipeline and is controlled through a three-way valve, molecular sieves are arranged in the first adsorption tower and the second adsorption tower, the first adsorption tower and the second adsorption tower are connected with a buffer tank through a pipeline and are controlled through a four-way valve, a finished product pipe is connected to the side of the buffer tank, a backflow pipe is connected to the finished product pipe, the end of the backflow pipe is connected to the fourth end of the four-way valve, a filter pipe is detachably connected to the end of the finished product pipe, a filter core is installed in the filter pipe, the finished product pipe and the filter pipe are connected through a clamp sleeve stop valve, a silencer is connected to the end of the filter pipe, and a finished product oxygen concentration meter is connected to the end of the silencer.

[0009] Further, the clamp sleeve stop valve comprises a valve core assembly, blade rings are arranged at the pipeline connection positions of the two ends of the valve core assembly, lock nuts are threadedly connected to the outer sides of the blade rings, anti-skid lines are arranged on the outer peripheries of the lock nuts, when the lock nuts are screwed, the blade rings are axially compressed, the blade rings are radially contracted to tightly hold the outer wall of the pipeline, and sealing rings are arranged at the connection positions of the blade rings and the lock nuts.

[0010] Further, a humidification cup is connected to the end of the silencer and used for humidifying the finished product oxygen.

[0011] Further, a buzzer is further installed on the oxygen generator main body and electrically connected with the finished product oxygen concentration meter.

[0012] Further, a flow regulator is installed at the end of the filter pipe.

[0013] Further, a soundproof plate is further attached to the bottom of the compressor.

[0014] Further, the first adsorption tower and the second adsorption tower are radial adsorption towers, and the molecular sieves are arranged in the axial directions of the first adsorption tower and the second adsorption tower. The axial adsorption tower flow channel has the problems of uneven air flow distribution, vortex noise at the rear of the exhaust pipe and low utilization rate of the molecular sieves.

[0015] The utility model has the following beneficial effects compared with the prior art:

[0016] The utility model discloses a sleeve stop valve connects finished product pipe and filter pipe, and the backflow pipe is arranged at the front end of sleeve stop valve, is connected with the top of first adsorption tower and second adsorption tower through four -way valve, when the molecular sieve bed layer is handled again, oxygen passes through four -way valve and flows into backflow pipe from buffer tank, re -inputs the top of adsorption tower, from top to bottom flushes adsorption bed layer, accelerates the desorption process of nitrogen, and two adsorption towers work in turns, and the above -mentioned process realizes four -way valve by the PLC control system, and the problem of turbulent flow, energy consumption, noise in the pipeline of prior art is solved.

[0017] The utility model discloses on the basis of prior art, increase bee calling organ, and with finished product oxygen concentration gauge electric connection, when the finished product oxygen concentration is less than sixty percent, automatic alarm.

[0018] The utility model discloses increase muffler board in the bottom of compressor, and increase muffler in the tail end of filter pipe, further reduce device operation noise, adapt medical environment. DRAWINGS

[0019] Figure 1 It is the inside whole structure schematic view of the utility model;

[0020] Figure 2 It is the outside schematic view of the utility model;

[0021] Figure 3 It is the inside whole structure rear side schematic view of the utility model;

[0022] Figure 4 It is the inside structure plan view of the utility model;

[0023] Figure 5 It is the inside structure front view of the utility model;

[0024] Figure 6 It is the section view of sleeve stop valve in the utility model;

[0025] The marks of each component in the drawing are as follows: 1, oxygen generator main body;2, compressor;3, primary filter device;4, first adsorption tower;5, second adsorption tower;6, three -way valve;7, molecular sieve;8, buffer tank;9, four -way valve;10, finished product pipe;11, backflow pipe;12, filter pipe;13, filter core;14, sleeve stop valve;15, muffler;16, finished product oxygen concentration gauge;17, humidification cup;18, bee calling organ;19, flow regulator;20, muffler board;141, valve core subassembly;142, blade ring;143, lock nut;144, sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions of the utility model will be clearer with the description of the drawings. However, it should be understood that the embodiments are only exemplary and do not limit the scope of the utility model.

[0027] It should be noted that the terms "upper", "lower", "front", "rear" and the like in the claims and the description of the present application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and do not necessarily mean that the device or component referred to must have a particular orientation, be constructed or operated in a particular orientation.

[0028] In the utility model, unless otherwise explicitly specified and limited, the terms "fixed", "connected" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or can be integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0029] Please refer to Figures 1 to 6 , wherein Figure 1 The internal structure of the utility model is shown, Figure 2 The external structure of the utility model is shown.

[0030] A kind of medical energy-saving backflow device of oxygen generating equipment, it includes oxygen generator main body 1, compressor 2 is installed in oxygen generator main body 1, compressor 2 is connected with preliminary filter device 3 by pipeline, preliminary filter device 3 is connected with first adsorption tower 4 and second adsorption tower 5 by pipeline, and is controlled by three-way valve 6, first adsorption tower 4 and second adsorption tower 5 are all provided with molecular sieve 7, first adsorption tower 4 and second adsorption tower 5 are connected with buffer tank 8 by pipeline, and are controlled by four-way valve 9, the side of buffer tank 8 is connected with finished product pipe 10, finished product pipe 10 is connected with backflow pipe 11, the end of backflow pipe 11 is connected in the fourth end of four-way valve 9, the end of finished product pipe 10 is detachably connected with filter pipe 12, filter core 13 is installed in the inside of filter pipe 12, finished product pipe 10 and filter pipe 12 are connected by collet stop valve 14, the end of filter pipe 12 is connected with silencer 15, and the end of silencer 15 is connected with finished product oxygen concentration meter 16.

[0031] The sleeve stop valve 14 comprises a valve core assembly 141, blade rings 142 are arranged at both ends of the valve core assembly 141, lock nuts 143 are threadedly connected to the outer sides of the blade rings 142, and anti-skid threads are arranged on the outer peripheries of the lock nuts 143; when the lock nuts 143 are screwed, the blade rings 142 are axially compressed, the blade rings 142 are radially contracted to tightly hold the outer wall of the pipeline, and sealing rings 144 are arranged at the connecting positions of the blade rings 142 and the lock nuts 143.

[0032] It should be noted that the end of the muffler 15 is connected with a humidification cup 17 for humidifying the finished product oxygen; a buzzer 18 is also arranged on the main body 1 of the oxygen generator, the buzzer 18 is electrically connected with the finished product oxygen concentration meter 16, and the buzzer 18 automatically alarms when the concentration of the finished product oxygen is lower than 60%; and a flow regulator 19 is arranged at the end of the filter pipe 12.

[0033] It should be further noted that the first adsorption tower 4 and the second adsorption tower 5 are both radial adsorption towers, and the molecular sieve 7 is arranged in the first adsorption tower 4 and the second adsorption tower 5 in an axial direction.

[0034] The working principle and use process of the utility model are as follows:

[0035] The utility model connects the finished product pipe 10 and the filter pipe 12 through the sleeve stop valve 14, and the filter pipe 12 can be disassembled by rotating the lock nut 143, so that the filter element 13 can be conveniently disassembled and replaced.

[0036] In the production of oxygen, the compressor 2 compresses air to the primary filter device 3, the primary filter device 3 is connected to the first adsorption tower 4 or the second adsorption tower 5 through a pipeline and a three-way valve, the air filtered primarily enters the adsorption tower and is adsorbed by the molecular sieve 7, the molecular sieve 7 is a kind of porous material with selective adsorption capacity, can adsorb nitrogen, carbon dioxide and other impurities in air, and allows oxygen which is not easy to be adsorbed to pass through, so as to realize the separation of oxygen and impurities. The oxygen separated by the adsorption tower is input into the buffer tank 8 for temporary storage through the buffer pipe, and then flows into the finished product pipe 10, and then flows into the filter pipe 12 for secondary filtration by the filter element 13, and finally is used after humidification by the humidification cup 17.

[0037] In the reflux process, the reflux pipe 11 is arranged at the front end of the sleeve stop valve 14, and is connected with the top of the first adsorption tower 4 and the second adsorption tower 5 through the four-way valve 9; when the molecular sieve 7 bed layer is regenerated, oxygen flows into the reflux pipe 11 from the buffer tank 8 through the four-way valve 9, is input into the top of the adsorption tower again, and flushes the adsorption bed layer from top to bottom, accelerates the desorption process of nitrogen, and the two adsorption towers work alternately, and the above process is realized by the PLC control system controlling the four-way valve 9.

[0038] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy-saving backflow device for a medical oxygen generator, comprising an oxygen generator main body (1), wherein a compressor (2) is installed in the oxygen generator main body (1), characterized in that: The compressor (2) is connected with a primary filter device (3) through a pipeline, the primary filter device (3) is connected with a first adsorption tower (4) and a second adsorption tower (5) through a pipeline and is controlled through a three-way valve (6), the first adsorption tower (4) and the second adsorption tower (5) are both provided with a molecular sieve (7), the first adsorption tower (4) and the second adsorption tower (5) are connected with a buffer tank (8) through a pipeline and are controlled through a four-way valve (9), the buffer tank (8) is connected with a finished product pipe (10), the finished product pipe (10) is connected with a backflow pipe (11), the backflow pipe (11) is connected to the fourth end of the four-way valve (9), the end of the finished product pipe (10) is detachably connected with a filter pipe (12), the filter pipe (12) is internally provided with a filter core (13), the finished product pipe (10) and the filter pipe (12) are connected through a clamp sleeve stop valve (14), the end of the filter pipe (12) is connected with a silencer (15), and the end of the silencer (15) is connected with a finished product oxygen concentration meter (16).

2. The medical oxygen production equipment energy-saving backflow device according to claim 1, characterized in that: The clamp sleeve stop valve (14) comprises a valve core assembly (141), both ends of the valve core assembly (141) are provided with blade rings (142), the outer wall of the blade ring (142) is connected with a locking nut (143) through threads, the outer periphery of the locking nut (143) is provided with anti-skid lines, when the locking nut (143) is tightened, the blade ring (142) is axially compressed, the blade ring (142) is radially contracted and tightly holds the outer wall of the pipeline, and the connecting part of the blade ring (142) and the locking nut (143) is also provided with a sealing ring (144).

3. The medical oxygen production equipment energy-saving backflow device according to claim 2, characterized in that: The end of the silencer (15) is connected with a humidification cup (17).

4. The medical oxygen production equipment energy-saving backflow device according to claim 2, characterized in that: The oxygen generator main body (1) is also provided with a buzzer (18), and the buzzer (18) is electrically connected with the finished product oxygen concentration meter (16).

5. The energy-saving backflow device for medical oxygen production equipment according to claim 2, characterized in that: The end of the filter pipe (12) is provided with a flow regulator (19).

6. The energy-saving backflow device for medical oxygen production equipment according to claim 2, characterized in that: The bottom of the compressor (2) is also attached with a sound-absorbing plate (20).

7. The energy-saving backflow device for medical oxygen production equipment according to claim 2, characterized in that: The first adsorption tower (4) and the second adsorption tower (5) are both radial adsorption towers, and the molecular sieve (7) is arranged axially in the first adsorption tower (4) and the second adsorption tower (5).

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