Low-concentration oxygen reflux device of medical molecular sieve oxygen production equipment

Abstract

The utility model relates to the technical field of oxygen generation equipment, in particular to a low-concentration oxygen backflow device of medical molecular sieve oxygen generation equipment, which comprises a mounting cabinet, a partition plate is fixedly arranged in the mounting cabinet, an air compressor is fixedly arranged at the bottom in the mounting cabinet, a first connecting pipe is fixedly arranged at the air outlet end of the air compressor, and the other end of the first connecting pipe is connected with a first U-shaped pipe; through the arrangement of the air compressor, the adsorption towers, the oxygen detector, the third connecting pipe, the third electromagnetic valve, the fourth connecting pipe, the fourth electromagnetic valve and the one-way valve, the air compressor is started and can convey external air into the adsorption tower on one side, and oxygen can be conveyed into the second connecting pipe after being filtered by the adsorption towers; the oxygen detector detects the concentration of passing oxygen, when the concentration reaches the standard, the oxygen is conveyed into the oxygen box, when the concentration does not reach the standard, the oxygen is conveyed back into the first connecting pipe to be filtered again, and the concentration of the oxygen is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen production equipment, in particular to a low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment. Background Art

[0002] At present, medical molecular sieve oxygen production equipment adopts the principle of molecular sieve pressure swing adsorption oxygen production, using air as raw material and molecular sieve as adsorbent, and using pressure swing adsorption to produce oxygen. This molecular sieve pressure swing adsorption oxygen production system includes an air compressor, multiple groups of adsorption towers, and an adsorption tower gas distribution and switching system.

[0003] The adsorption and desorption capacity of the molecular sieves in the currently available medical molecular sieve oxygen generators will be affected by temperature and humidity. When the adsorption and desorption capacity of the molecular sieves decreases, the concentration of the oxygen produced will decrease.

[0004] Therefore, in view of the problem that the adsorption and desorption capacity of the molecular sieve of the above-mentioned currently existing medical molecular sieve oxygen production equipment will be affected by temperature and humidity, and when the adsorption and desorption capacity of the molecular sieve decreases, the concentration of the oxygen produced will also decrease, a low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment can be designed. By setting an air compressor, an adsorption tower, an oxygen detector, connecting pipe three, solenoid valve three, connecting pipe four, solenoid valve four and a one-way valve, the air compressor is started, and the air compressor can transport the outside air to the adsorption tower on one side. The oxygen can be transported to connecting pipe two after being filtered by the adsorption tower. The oxygen detector detects the concentration of the oxygen passing through. When the concentration meets the standard, the oxygen is transported to the oxygen box. When the concentration does not meet the standard, the oxygen is transported back to connecting pipe one for filtration again to ensure the concentration of the oxygen. Utility Model Content

[0005] In order to overcome the problem that the adsorption and desorption capacity of the molecular sieve in the existing medical molecular sieve oxygen production equipment will be affected by temperature and humidity, when the adsorption and desorption capacity of the molecular sieve decreases, the concentration of the oxygen produced will also decrease.

[0006] The technical solution of the utility model is: a low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment, comprising an installation cabinet; a partition is fixedly provided inside the installation cabinet, an air compressor is fixedly provided at the bottom of the installation cabinet, a connecting pipe 1 is fixedly provided at the air outlet end of the air compressor, the other end of the connecting pipe 1 is connected to a U-shaped pipe 1, adsorption towers are fixedly provided at the front and rear ends of the right side of the bottom of the installation cabinet, the other end of the U-shaped pipe 1 is respectively connected to the air inlets of the two adsorption towers, two solenoid valves 1 are installed inside the U-shaped pipe 1, and U-shaped pipes are provided on the tops of the front and rear adsorption towers. 2. Solenoid valve 2 is installed on both the front and rear sides of the U-shaped tube 2. An oxygen box is fixedly installed on the top left side of the partition. A connecting tube 3 is opened on the right side of the oxygen box. A solenoid valve 3 is installed inside the connecting tube 3. An oxygen detector is fixedly installed at the other end of the connecting tube 3. A connecting tube 2 is fixedly installed on the right end of the oxygen detector. The other end of the connecting tube 2 is opened on the left side of the U-shaped tube 2. A connecting tube 4 is opened at the bottom of the connecting tube 3. The other end of the connecting tube 4 is opened at the top of the connecting tube 1. A solenoid valve 4 is installed at the upper end of the connecting tube 4, and a one-way valve is installed at the lower end of the connecting tube 4.

[0007] Preferably, start the air compressor, open the solenoid valve 1 and the solenoid valve 2 corresponding to the adsorption tower on one side, and the air compressor can transport the outside air to the inside of the adsorption tower through the connecting pipe 1 and the U-shaped tube 1. After the oxygen is filtered by the adsorption tower, it is transported to the inside of the connecting pipe 2 through the U-shaped tube 2. The oxygen detector detects the concentration of the oxygen passing through. When the oxygen concentration meets the standard, the solenoid valve 3 is opened, and the oxygen can enter the interior of the oxygen box through the connecting pipe 3. When the oxygen concentration does not meet the standard, the solenoid valve 3 is closed and the solenoid valve 4 is opened. The oxygen can flow back to the interior of the connecting pipe 1 through the connecting pipe 3, the connecting pipe 4 and the one-way valve, so that the oxygen can be purified again through the adsorption tower.

[0008] Preferably, the two solenoid valves 1 are respectively located on the front and rear sides of the connecting pipe 1, the two solenoid valves 2 are respectively located on the front and rear sides of the connecting pipe 2, and the connecting pipe 4 is located between the solenoid valve 3 and the oxygen detector.

[0009] Preferably, a filter box is fixedly provided on the left side of the inner bottom of the installation cabinet, a connecting pipe five is fixedly provided on the suction end of the air compressor, the other end of the connecting pipe five is opened at the air outlet of the filter box, an air inlet pipe is opened at the air inlet of the filter box, and the other end of the air inlet pipe passes through the installation cabinet and is arranged on the left side of the installation cabinet.

[0010] Preferably, a connecting pipe 6 is opened on the left side of the top of the oxygen box, the other end of the connecting pipe 6 passes through the installation cabinet and is arranged at the upper end of the installation cabinet, and a solenoid valve 5 is installed inside the connecting pipe 6.

[0011] Preferably, a ventilation mesh is provided at the lower end of the back side of the installation cabinet.

[0012] Preferably, a cabinet door is provided on the front of the installation cabinet.

[0013] Preferably, universal wheels are fixedly provided at the four corners of the bottom of the installation cabinet.

[0014] Beneficial effects of the utility model:

[0015] 1. By setting up an air compressor, an adsorption tower, an oxygen detector, connecting pipe three, solenoid valve three, connecting pipe four, solenoid valve four and a one-way valve, start the air compressor. The air compressor can transport the outside air to the adsorption tower on one side. The oxygen can be transported to the connecting pipe two after being filtered by the adsorption tower. The oxygen detector detects the concentration of the oxygen passing through. When the concentration meets the standard, the solenoid valve three is opened to transport the oxygen to the oxygen box. When the concentration does not meet the standard, the solenoid valve four is opened to transport the oxygen back to the connecting pipe one through the connecting pipe four and filter it again to ensure the oxygen concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment of the present utility model;

[0017] Figure 2 Shown is a three-dimensional cross-sectional schematic diagram of the oxygen box of a low-concentration oxygen reflux device of a medical molecular sieve oxygen production equipment of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the internal structure of a low-concentration oxygen reflux device of a medical molecular sieve oxygen production equipment of the present invention;

[0019] Figure 4 Shown is a schematic diagram of the back-side three-dimensional structure of a low-concentration oxygen reflux device of a medical molecular sieve oxygen production equipment according to the present invention.

[0020] Explanation of the accompanying symbols: 1. Installation cabinet; 2. Partition; 3. Air compressor; 4. Connecting pipe one; 5. U-shaped pipe one; 6. Solenoid valve one; 7. Adsorption tower; 8. U-shaped pipe two; 9. Solenoid valve two; 10. Connecting pipe two; 11. Oxygen detector; 12. Connecting pipe three; 13. Solenoid valve three; 14. Oxygen box; 15. Connecting pipe four; 16. Solenoid valve four; 17. One-way valve; 18. Connecting pipe five; 19. Filter box; 20. Air inlet pipe; 21. Breathable mesh; 22. Connecting pipe six; 23. Solenoid valve five; 24. Cabinet door; 25. Universal wheel. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4The utility model provides an embodiment: a low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment, comprising an installation cabinet 1; a partition 2 is fixedly provided inside the installation cabinet 1, an air compressor 3 is fixedly provided at the bottom of the installation cabinet 1, a connecting pipe 4 is fixedly provided at the outlet end of the air compressor 3, and the other end of the connecting pipe 4 is connected to a U-shaped pipe 5, an adsorption tower 7 is fixedly provided at both the front and rear ends of the right side of the bottom of the interior of the installation cabinet 1, the other end of the U-shaped pipe 5 is respectively connected to the air inlet of the two adsorption towers 7, two solenoid valves 6 are installed inside the U-shaped pipe 5, a U-shaped pipe 2 8 is opened on the top of the front and rear adsorption towers 7, and a solenoid valve 2 9 is installed on the front and rear sides of the U-shaped pipe 2 8, an oxygen box 14 is fixedly provided on the left side of the top of the partition 2, a connecting pipe 3 12 is opened on the right side of the oxygen box 14, a solenoid valve 3 13 is installed inside the connecting pipe 3 12, an oxygen detector 11 is fixedly provided on the other end of the connecting pipe 3 12, a connecting pipe 2 10 is fixedly provided on the right end of the oxygen detector 11, and the other end of the connecting pipe 2 10 is opened On the left side of the U-shaped tube 2 8, a connecting tube 4 15 is provided at the bottom of the connecting tube 3 12, and the other end of the connecting tube 4 15 is provided at the top of the connecting tube 1 4. A solenoid valve 4 16 is installed at the upper end of the connecting tube 4 15, and a one-way valve 17 is installed at the lower end of the connecting tube 4 15. Start the air compressor 3, open the solenoid valve 1 6 and the solenoid valve 2 9 corresponding to the adsorption tower 7 on one side, and the air compressor 3 can transport the outside air to the inside of the adsorption tower 7 through the connecting tube 1 4 and the U-shaped tube 1 5. After the oxygen is filtered by the adsorption tower 7, The oxygen is transported to the interior of the connecting pipe 2 10 through the U-shaped pipe 2 8, and the oxygen detector 11 detects the concentration of the oxygen passing through. When the oxygen concentration meets the standard, the solenoid valve 3 13 is opened, and the oxygen can enter the interior of the oxygen box 14 through the connecting pipe 3 12. When the oxygen concentration does not meet the standard, the solenoid valve 3 13 is closed and the solenoid valve 4 16 is opened, and the oxygen can flow back to the interior of the connecting pipe 1 4 through the connecting pipe 3 12, the connecting pipe 4 15 and the one-way valve 17, so that the oxygen can be purified again through the adsorption tower 7.

[0023] See also Figures 1-4In this embodiment, the two solenoid valves 1 6 are respectively located on the front and rear sides of the connecting pipe 1 4, the two solenoid valves 2 9 are respectively located on the front and rear sides of the connecting pipe 2 10, the connecting pipe 4 15 is located between the solenoid valve 3 13 and the oxygen detector 11, a filter box 19 is fixedly provided on the left side of the bottom interior of the installation cabinet 1, a connecting pipe 5 18 is fixedly provided on the suction end of the air compressor 3, the other end of the connecting pipe 5 18 is opened at the air outlet of the filter box 19, an air intake pipe 20 is opened at the air inlet of the filter box 19, the other end of the air intake pipe 20 passes through the installation cabinet 1 and is arranged on the left side of the installation cabinet 1, a connecting pipe 6 22 is opened on the left side of the top of the oxygen box 14, the other end of the connecting pipe 6 22 passes through the installation cabinet 1 and is arranged at the upper end of the installation cabinet 1, a solenoid valve 5 23 is installed inside the connecting pipe 6 22, and a breathable mesh 21 is opened at the lower end of the back of the installation cabinet 1 to start the air compressor. The air compressor 3 can suck the outside air into the filter box 19 through the air inlet pipe 20. After being filtered by the filter box 19, the air is transported to the adsorption tower 7 through the connecting pipe 5 18, the connecting pipe 1 4 and the U-shaped pipe 1 5. After being filtered by the adsorption tower 7, the oxygen enters the interior of the oxygen box 14 through the U-shaped pipe 2 8, the connecting pipe 2 10 and the connecting pipe 3 12. When the patient needs to use the oxygen inside the oxygen box 14, the ventilator is connected to the connecting pipe 6 22, and the solenoid valve 5 23 is opened. The oxygen inside the oxygen box 14 can enter the interior of the ventilator through the connecting pipe 6 22. The settings of the two solenoid valves 1 6 and the solenoid valve 2 9 can respectively control the circulation of the two adsorption towers 7. When one adsorption tower 7 is desorbed, the other adsorption tower 7 can be activated to produce oxygen. The opening of the breathable mesh 21 facilitates heat dissipation of the air compressor 3.

[0024] See also Figure 1 In this embodiment, a cabinet door 24 is provided on the front of the installation cabinet 1, and universal wheels 25 are fixedly provided at the four corners of the bottom of the installation cabinet 1. The opening of the cabinet door 24 makes it easy for personnel to open the installation cabinet 1, thereby facilitating the inspection and maintenance of internal components. The setting of the universal wheels 25 facilitates the movement of the installation cabinet 1.

[0025] During operation, when oxygen production is needed, the air compressor 3 is started, and the solenoid valve 1 6 and the solenoid valve 2 9 corresponding to the adsorption tower 7 on one side are opened. The air compressor 3 can suck the outside air into the filter box 19 through the air inlet pipe 20. After the air is filtered by the filter box 19, it is transported to the inside of the adsorption tower 7 through the connecting pipe 5 18, the connecting pipe 1 4 and the U-shaped tube 1 5. After the oxygen is filtered by the adsorption tower 7, it is transported to the inside of the connecting pipe 2 10 through the U-shaped tube 2 8. At this time, the oxygen detector 11 detects the concentration of the oxygen passing through. When the oxygen concentration meets the standard, the solenoid valve 3 13 is opened and the solenoid valve 4 16 is closed. The oxygen can thus enter the inside of the oxygen box 14 through the connecting pipe 3 12. When the oxygen concentration does not meet the standard, the solenoid valve 3 13 is closed and the solenoid valve 4 16 is opened. The oxygen can thus flow back to the inside of the connecting pipe 1 4 through the connecting pipe 3 12, the connecting pipe 4 15 and the one-way valve 17, so that the oxygen can be purified again through the adsorption tower 7, thereby ensuring the oxygen concentration.

[0026] Through the above steps, by setting up the air compressor 3, the adsorption tower 7, the oxygen detector 11, the connecting pipe three 12, the solenoid valve three 13, the connecting pipe four 15, the solenoid valve four 16 and the one-way valve 17, the air compressor 3 is started, and the air compressor 3 can transport the outside air to the adsorption tower 7 on one side. The oxygen can be transported to the connecting pipe two 10 after being filtered by the adsorption tower 7. The oxygen detector 11 detects the concentration of the oxygen passing through. When the concentration meets the standard, the oxygen is transported to the oxygen box 14. When the concentration does not meet the standard, the oxygen is transported back to the connecting pipe one 4 and filtered again to ensure the oxygen concentration, so as to solve the problem that the current medical molecular sieve oxygen production equipment, the molecular sieve adsorption and desorption capacity will be affected by temperature and humidity. When the molecular sieve adsorption and desorption capacity decreases, the oxygen concentration produced at this time will also decrease.

Claims

1. A low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment, comprising an installation cabinet (1); characterized in that: A partition (2) is fixedly provided inside the installation cabinet (1), an air compressor (3) is fixedly provided at the bottom of the installation cabinet (1), a connecting pipe (4) is fixedly provided at the air outlet end of the air compressor (3), the other end of the connecting pipe (4) is connected to a U-shaped pipe (5), adsorption towers (7) are fixedly provided at both the front and rear ends of the right side of the bottom of the installation cabinet (1), the other end of the U-shaped pipe (5) is respectively connected to the air inlets of the two adsorption towers (7), two electromagnetic valves (6) are installed inside the U-shaped pipe (5), a U-shaped pipe (8) is provided at the top of the front and rear adsorption towers (7), and electromagnetic valves (9) are installed at both the front and rear sides of the U-shaped pipe (8), the left side of the top of the partition (2) An oxygen box (14) is fixedly provided, a connecting pipe (12) is provided on the right side of the oxygen box (14), a solenoid valve (13) is installed inside the connecting pipe (12), an oxygen detector (11) is fixedly provided on the other end of the connecting pipe (12), a connecting pipe (10) is fixedly provided on the right end of the oxygen detector (11), the other end of the connecting pipe (10) is provided on the left side of the U-shaped pipe (8), a connecting pipe (15) is provided at the bottom of the connecting pipe (12), the other end of the connecting pipe (15) is provided on the top of the connecting pipe (4), a solenoid valve (16) is installed on the upper end of the connecting pipe (15), and a one-way valve (17) is installed on the lower end of the connecting pipe (15).

2. A low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: The two solenoid valves (1) (6) are respectively located at the front and rear sides of the connecting pipe (4), the two solenoid valves (2) (9) are respectively located at the front and rear sides of the connecting pipe (10), and the connecting pipe (4) (15) is located between the solenoid valve (3) (13) and the oxygen detector (11).

3. The low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: A filter box (19) is fixedly provided on the left side of the bottom of the installation cabinet (1), a connecting pipe (18) is fixedly provided on the air intake end of the air compressor (3), the other end of the connecting pipe (18) is opened at the air outlet of the filter box (19), an air intake pipe (20) is opened at the air intake of the filter box (19), and the other end of the air intake pipe (20) passes through the installation cabinet (1) and is provided on the left side of the installation cabinet (1).

4. The low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: A connecting pipe six (22) is provided on the left side of the top of the oxygen box (14), the other end of the connecting pipe six (22) passes through the installation cabinet (1) and is arranged at the upper end of the installation cabinet (1), and a solenoid valve five (23) is installed inside the connecting pipe six (22).

5. The low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: A ventilation mesh hole (21) is provided at the lower end of the back side of the installation cabinet (1).

6. The low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: The front of the installation cabinet (1) is provided with a cabinet door (24).

7. The low-concentration oxygen reflux device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: Universal wheels (25) are fixedly provided at the four corners of the bottom of the installation cabinet (1).

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