Negative pressure generating device in air pressurization oxygen cabin

Abstract

The invention relates to the technical field of medical equipment, in particular to a negative pressure generating device in an air pressurization oxygen cabin, which comprises a main body mechanism and a sealing cover mechanism, the sealing cover mechanism is mounted at the top of the main body mechanism, and the main body mechanism comprises a shell, a vacuum generator, a pressure regulating valve, an air inlet valve, a negative pressure meter and a filter; the vacuum generator is installed on the inner bottom wall of the shell, the pressure regulating valve is installed on the inner bottom wall of the shell and located on one side of the vacuum generator, and the negative pressure meter is installed on the inner bottom wall of the shell. The negative pressure generating device, the pipeline and the control part which are additionally arranged due to the negative pressure outside the cabin are reduced, faults are reduced, the size is small, carrying, moving and using are convenient, using is convenient, reliability is high, and the problems that before the pressure inside the cabin is stable, the negative pressure cannot be provided for a patient, and the stability of the negative pressure cannot be guaranteed are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a negative pressure generating device in an air pressurized oxygen chamber. Background Art

[0002] At present, the negative pressure source of multi-person air pressurized oxygen chambers in China is mainly the pressure difference between the inside and outside of the chamber when the chamber is pressurized. When the chamber is in the initial stage of pressurization and the late stage of decompression, there are many seriously ill patients undergoing hyperbaric oxygen therapy. Sometimes, when the pressure is not reached, the pressure in the chamber is lower than 0.04Mpa, and effective sputum suction cannot be performed. If not treated in time, it will endanger life and cause the risk of suffocation; the negative pressure suction intensity of the existing negative pressure suction device changes with the change of the pressure in the chamber, and it cannot provide a stable negative pressure. Therefore, there are safety hazards for patients who need negative pressure suction during treatment in a hyperbaric oxygen chamber.

[0003] A Chinese patent publication (publication number: CN102908236B) discloses a hyperbaric oxygen chamber negative pressure system, which includes a hyperbaric oxygen chamber, a digital electric pressure gauge is connected to the outside of the hyperbaric oxygen chamber, the digital electric pressure gauge is connected to the control center, and a continuous negative pressure system is connected to the outside of the hyperbaric oxygen chamber, and the continuous negative pressure system is connected to the control center; after adopting this structure: when the pressure in the hyperbaric oxygen chamber is less than 0.13MPa, the equipment in the chamber is connected to the hospital center negative pressure system with a suction terminal, and the negative pressure value is the sum of the pressure in the chamber and the negative pressure of the hospital center negative pressure system, which can ensure that this stage The equipment in the cabin has sufficient negative pressure suction capacity with the negative pressure suction terminal to ensure effective sputum suction. When the pressure in the cabin is greater than or equal to 0.13MPa, the negative pressure suction system in the hyperbaric oxygen cabin is disconnected from the central negative pressure system of the hospital through the solenoid valve. At this time, the negative pressure of the negative pressure suction terminal in the hyperbaric oxygen cabin comes from the pressure difference between the inside and outside of the cabin. However, in actual use, it is necessary to attach pipelines, and there are circuit controls and solenoid valves inside the oxygen cabin, which increases the failure rate, creates safety hazards, and reduces the stability of negative pressure generation. For this reason, a negative pressure generating device in an air pressurized oxygen cabin is proposed. Summary of the invention

[0004] In view of this, the present invention provides a negative pressure generating device in an air pressurized oxygen chamber, which introduces an air pressure higher than the oxygen chamber pressure into the oxygen chamber through an air pressure inlet pipe, and uses a first connecting pipe to spray compressed air at high speed to form a jet at the pipe outlet to generate a suction flow. By using this principle, the air around the outlet of the first connecting pipe is continuously sucked to form a negative pressure, thereby providing a stable negative pressure environment, solving the problem that negative pressure cannot be provided to the patient before the pressure in the cabin is stable and the problem that the stability of the negative pressure cannot be guaranteed, and at least a beneficial option is provided.

[0005] The technical solution of the present invention is implemented as follows: a negative pressure generating device in an air pressurized oxygen chamber, comprising a main body mechanism and a cover mechanism, wherein the cover mechanism is installed on the top of the main body mechanism, and the main body mechanism comprises a shell, a vacuum generator, a pressure regulating valve, an air inlet valve, a negative pressure gauge and a filter;

[0006] The vacuum generator is installed on the inner bottom wall of the shell, the pressure regulating valve is installed on the inner bottom wall of the shell and is located on one side of the vacuum generator, the negative pressure gauge is installed on the inner bottom wall of the shell and is located on the other side of the vacuum generator, the air inlet of the pressure regulating valve is connected with an air pressure inlet pipe, the air outlet of the pressure regulating valve is connected with a first connecting pipe, the first connecting pipe is connected with the air inlet of the vacuum generator, the negative pressure outlet of the vacuum generator is connected with a first negative pressure outlet pipe, and one end of the first negative pressure outlet pipe is connected with the air inlet of the negative pressure gauge.

[0007] Further preferably, one end of the compressed air intake pipe passes through the shell, and a first joint is installed at one end of the compressed air intake pipe.

[0008] Further preferably, an air intake valve is installed on the outer side wall of the compressed air intake pipe.

[0009] Further preferably, the air pressure outlet of the vacuum generator is connected to an air pressure outlet pipe, and one end of the air pressure outlet pipe passes through the shell.

[0010] Further preferably, the air outlet of the negative pressure gauge is connected to a second connecting pipe, the filter is installed on the inner bottom wall of the shell, and one end of the second connecting pipe is connected to the air inlet of the filter.

[0011] Further preferably, the air outlet of the filter is connected to a second negative pressure air outlet pipe, one end of the second negative pressure air outlet pipe passes through the shell, and a second joint is installed at one end of the second negative pressure air outlet pipe.

[0012] Further preferably, the sealing mechanism includes a cover plate, a first through hole, a second through hole and a third through hole, the cover plate is arranged on the top of the shell, the first through hole, the second through hole and the third through hole are all opened on the upper surface of the cover plate, and are respectively located above the pressure regulating valve, the negative pressure gauge and the filter, and the pressure regulating valve, the negative pressure gauge and the filter respectively pass through the first through hole, the second through hole and the third through hole.

[0013] Further preferably, four first threaded holes are symmetrically formed on the upper surface of the shell, and four second threaded holes are symmetrically formed on the upper surface of the cover plate, and bolts are threadedly connected between inner side walls of the second threaded holes and the first threaded holes.

[0014] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0015] The present invention can generate negative pressure by itself without the help of air pressurization of the negative pressure outside the cabin, thereby reducing the increase of negative pressure generating equipment, pipelines and control parts due to the use of negative pressure outside the cabin, reducing malfunctions, and has a small size, is easy to carry and use, is easy to use, and has high reliability. It solves the problem that negative pressure cannot be provided to patients before the pressure in the cabin is stable and the problem that the stability of the negative pressure cannot be guaranteed.

[0016] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a structural diagram of a negative pressure generating device in an air compression oxygen chamber of the present invention;

[0019] Figure 2 For the present invention Figure 1 Another perspective structure diagram;

[0020] Figure 3 For the present invention Figure 1 Exploded structure diagram;

[0021] Figure 4 It is the internal structure diagram of the housing of the present invention;

[0022] Figure 5 For the present invention Figure 4 Another perspective structure diagram.

[0023] Figure numerals: 1. Main body; 11. Shell; 111. First threaded hole; 12. Vacuum generator; 121. Air pressure outlet pipe; 122. First negative pressure outlet pipe; 13. Pressure regulating valve; 131. Air pressure inlet pipe; 132. First joint; 133. First connecting pipe; 14. Inlet valve; 15. Negative pressure gauge; 151. Second connecting pipe; 16. Filter; 161. Second negative pressure outlet pipe; 162. Second joint; 2. Covering mechanism; 21. Cover plate; 22. First through hole; 23. Second through hole; 24. Third through hole; 25. Second threaded hole; 26. Bolt. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5 As shown, an embodiment of the present invention provides a negative pressure generating device in an air pressurized oxygen chamber, comprising a main body mechanism 1 and a cover mechanism 2, wherein the cover mechanism 2 is mounted on the top of the main body mechanism 1, and the main body mechanism 1 comprises a housing 11, a vacuum generator 12, a pressure regulating valve 13, an air inlet valve 14, a negative pressure gauge 15 and a filter 16;

[0027] The vacuum generator 12 is installed on the inner bottom wall of the shell 11, the pressure regulating valve 13 is installed on the inner bottom wall of the shell 11 and is located on one side of the vacuum generator 12, the negative pressure gauge 15 is installed on the inner bottom wall of the shell 11 and is located on the other side of the vacuum generator 12, the air inlet of the pressure regulating valve 13 is connected to the air pressure inlet pipe 131, the air outlet of the pressure regulating valve 13 is connected to the first connecting pipe 133, the first connecting pipe 133 is connected to the air inlet of the vacuum generator 12, the negative pressure outlet of the vacuum generator 12 is connected to the first negative pressure outlet pipe 122, and one end of the first negative pressure outlet pipe 122 is connected to the air inlet of the negative pressure gauge 15.

[0028] In one embodiment, one end of the compressed air intake pipe 131 passes through the shell 11, and a first connector 132 is installed at one end of the compressed air intake pipe 131; through the setting of the first connector 132, it is connected to the compressed air conveying equipment to convey compressed air to the compressed air intake pipe 131.

[0029] In one embodiment, an air intake valve 14 is installed on the outer wall of the compressed air intake pipe 131 ; by setting the air intake valve 14 , the air intake valve 14 is opened so that pressurized air is transported through the compressed air intake pipe 131 .

[0030] In one embodiment, the compressed air outlet of the vacuum generator 12 is connected to a compressed air outlet pipe 121 , and one end of the compressed air outlet pipe 121 passes through the shell 11 ; through the setting of the compressed air outlet pipe 121 , the pressurized air is discharged for use.

[0031] In one embodiment, the air outlet of the negative pressure gauge 15 is connected to a second connecting pipe 151, the filter 16 is installed on the inner bottom wall of the shell 11, and one end of the second connecting pipe 151 is connected to the air inlet of the filter 16; through the setting of the filter 16, particles, liquids and other impurities sucked in by the negative pressure are prevented from entering the second connecting pipe 151 and causing blockage.

[0032] In one embodiment, the air outlet of the filter 16 is connected to a second negative pressure outlet pipe 161, one end of the second negative pressure outlet pipe 161 passes through the shell 11, and a second connector 162 is installed at one end of the second negative pressure outlet pipe 161; through the setting of the second connector 162, it is connected to the equipment requiring negative pressure.

[0033] In one embodiment, the covering mechanism 2 includes a cover plate 21, a first through hole 22, a second through hole 23 and a third through hole 24. The cover plate 21 is arranged on the top of the shell 11. The first through hole 22, the second through hole 23 and the third through hole 24 are all opened on the upper surface of the cover plate 21, and are respectively located above the pressure regulating valve 13, the negative pressure gauge 15 and the filter 16. The pressure regulating valve 13, the negative pressure gauge 15 and the filter 16 respectively pass through the first through hole 22, the second through hole 23 and the third through hole 24; the shell 11 is covered by the setting of the cover plate 21.

[0034] In one embodiment, four first threaded holes 111 are symmetrically opened on the upper surface of the shell 11, and four second threaded holes 25 are symmetrically opened on the upper surface of the cover plate 21. The inner walls of the second threaded holes 25 and the first threaded holes 111 are threadedly connected with bolts 26. Through the setting of the bolts 26, after the cover plate 21 is covered on the top of the shell 11, the second threaded holes 25 on the cover plate 21 are aligned with the first threaded holes 111 on the shell 11, and then the bolts 26 are inserted into the second threaded holes 25 and the first threaded holes 111 to fix the position of the cover plate 21.

[0035] When the present invention is working: the first joint 132 is connected to the pressure air delivery device, when the pressure air enters the compressed air inlet pipe 131, the inlet valve 14 is opened, and after being adjusted by the pressure regulating valve 13, the pressure regulating valve 13 adjusts the input air pressure according to the negative pressure output value to achieve the purpose of adjusting the negative pressure, and enters the vacuum generator 12 through the first connecting pipe 133, and the negative pressure is output from the negative pressure outlet of the vacuum generator 12, and then passes through the negative pressure gauge 15, and then passes through the air filter 16, and then outputs the negative pressure through the second negative pressure outlet pipe 161, and the compressed air is ejected at a high speed to form a jet at the outlet of the second joint 162. The entrainment flow is generated, so that the air around the outlet of the second joint 162 is continuously sucked to form a negative pressure. According to Bernoulli's principle, the mechanical energy of the fluid is conserved. Using the formula: kinetic energy + gravitational potential energy + pressure potential energy = constant, when the flow is at equal height, the flow rate is large and the pressure is small, thereby providing a stable negative pressure environment. The negative pressure gas generated draws in the external gas through the second joint 162, and then the gas enters the filter 16 through the second negative pressure outlet pipe 161. The filter 16 prevents particles, liquids and other impurities sucked in by the negative pressure from entering the vacuum generator 12 and causing blockage, and finally the gas is discharged through the air pressure outlet pipe 121.

[0036] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A negative pressure generating device in an air pressurized oxygen chamber, characterized in that: It comprises a main body mechanism (1) and a cover mechanism (2), wherein the cover mechanism (2) is installed on the top of the main body mechanism (1), and the main body mechanism (1) comprises a shell (11), a vacuum generator (12), a pressure regulating valve (13), an air inlet valve (14), a negative pressure gauge (15) and a filter (16); The vacuum generator (12) is mounted on the inner bottom wall of the shell (11); the pressure regulating valve (13) is mounted on the inner bottom wall of the shell (11) and is located on one side of the vacuum generator (12); the negative pressure gauge (15) is mounted on the inner bottom wall of the shell (11) and is located on the other side of the vacuum generator (12); the air inlet of the pressure regulating valve (13) is connected to an air pressure inlet pipe (131); the air outlet of the pressure regulating valve (13) is connected to a first connecting pipe (133); the first connecting pipe (133) is connected to the air inlet of the vacuum generator (12); the negative pressure outlet of the vacuum generator (12) is connected to a first negative pressure outlet pipe (122); one end of the first negative pressure outlet pipe (122) is connected to the air inlet of the negative pressure gauge (15).

2. The negative pressure generating device in an air pressurized oxygen chamber according to claim 1, characterized in that: One end of the compressed air intake pipe (131) passes through the housing (11), and a first joint (132) is installed on one end of the compressed air intake pipe (131).

3. The negative pressure generating device in an air pressurized oxygen chamber according to claim 1, characterized in that: An air intake valve (14) is installed on the outer side wall of the compressed air intake pipe (131).

4. The negative pressure generating device in an air pressurized oxygen chamber according to claim 1, characterized in that: The compressed air outlet of the vacuum generator (12) is connected to a compressed air outlet pipe (121), and one end of the compressed air outlet pipe (121) passes through the shell (11).

5. The negative pressure generating device in an air pressurized oxygen chamber according to claim 1, characterized in that: The air outlet of the negative pressure gauge (15) is connected to a second connecting pipe (151), the filter (16) is installed on the inner bottom wall of the shell (11), and one end of the second connecting pipe (151) is connected to the air inlet of the filter (16).

6. The negative pressure generating device in an air pressurized oxygen chamber according to claim 1, characterized in that: The air outlet of the filter (16) is connected to a second negative pressure air outlet pipe (161), one end of the second negative pressure air outlet pipe (161) passes through the shell (11), and one end of the second negative pressure air outlet pipe (161) is installed with a second joint (162).

7. The negative pressure generating device in an air pressurized oxygen chamber according to claim 1, characterized in that: The sealing mechanism (2) comprises a cover plate (21), a first through hole (22), a second through hole (23) and a third through hole (24); the cover plate (21) is arranged on the top of the shell (11); the first through hole (22), the second through hole (23) and the third through hole (24) are all opened on the upper surface of the cover plate (21) and are respectively located above the pressure regulating valve (13), the negative pressure gauge (15) and the filter (16); the pressure regulating valve (13), the negative pressure gauge (15) and the filter (16) respectively pass through the first through hole (22), the second through hole (23) and the third through hole (24).

8. The negative pressure generating device in an air pressurized oxygen chamber according to claim 7, characterized in that: The upper surface of the shell (11) is symmetrically provided with four first threaded holes (111), the upper surface of the cover plate (21) is symmetrically provided with four second threaded holes (25), and the inner side walls of the second threaded holes (25) and the first threaded holes (111) are threadedly connected with bolts (26).

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