Negative pressure machine

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a negative pressure machine which comprises a water-gas separator and two negative pressure generation containers. Air inlets of the two negative pressure generation containers are connected with branch air inlet assemblies respectively, and the two branch air inlet assemblies are jointly connected with a main air inlet assembly. A pressure regulating assembly is arranged on the main path air inlet assembly; water inlets of the two negative pressure generation containers are connected with branch water inlet assemblies respectively, and the two branch water inlet assemblies are jointly connected with a main water inlet assembly; the negative pressure machine comprises two negative pressure generation containers, discharge ports of the two negative pressure generation containers are connected with branch discharge assemblies respectively, the two branch discharge assemblies are jointly connected with a main discharge assembly, and the main discharge assembly is connected with an inlet of a water-gas separator. And in addition, the pressure adjusting assembly is further arranged to adjust the air pressure, so that the stability of the air pressure is guaranteed, and high practicability is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a negative pressure machine. Background Art

[0002] During dental treatment, cutting teeth will cause droplets to be released from the patient's mouth, and the patient himself may also drool uncontrollably; at the same time, when the patient's teeth are polished, a lot of atomized liquid and atomized tooth powder will be produced. In an environment where respiratory infectious diseases exist, many respiratory diseases can be spread in this way, thereby endangering the health and safety of people around.

[0003] A negative pressure machine is a device used to generate negative pressure to suction the droplets discharged by the patient.

[0004] The negative pressure machine in the prior art generally only has one negative pressure generating container. This type of negative pressure machine has the following shortcomings: first, it cannot adjust the air pressure, which often leads to unstable air pressure; second, when the motor of the negative pressure generating container fails, the suction work will be terminated.

[0005] In order to solve this problem, the present application discloses a negative pressure machine. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the present application discloses a negative pressure machine.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is: a negative pressure machine, including a water-gas separator and two negative pressure generating containers;

[0008] The air inlets of the two negative pressure generating containers are respectively connected to branch air inlet assemblies, and the two branch air inlet assemblies are commonly connected to the main air inlet assembly;

[0009] The main air intake assembly is provided with a pressure regulating assembly;

[0010] The water inlets of the two negative pressure generating containers are respectively connected to a branch water inlet assembly, and the two branch water inlet assemblies are commonly connected to a main water inlet assembly;

[0011] The discharge ports of the two negative pressure generating containers are respectively connected to branch discharge components, and the two branch discharge components are commonly connected to a main discharge component, and the main discharge component is connected to the inlet of the water-gas separator.

[0012] It is further preferred that the two branch air intake assemblies each include a first stop valve installed on the air inlet of the negative pressure generating container and a first connecting pipeline connected to the first stop valve.

[0013] It is further preferred that the main air intake assembly includes a three-way diverter a connected to the two first connecting pipes, a four-way diverter connected to the three-way diverter a and two air intake pipes connected to the four-way diverter, and the pressure regulating assembly is installed on the four-way diverter.

[0014] Further preferably, the pressure regulating component is a pressure regulating valve.

[0015] It is further preferred that the two branch water inlet components each include a second connecting pipe connected to the water inlet of the negative pressure generating container, a solenoid valve connected to the second connecting pipe, a third connecting pipe connected to the solenoid valve, a water inlet branch connected to the third pipe, and a fourth connecting pipe connected to the water inlet branch.

[0016] It is further preferred that the main water inlet assembly includes a water inlet main joint and a three-way diverter b, the water inlet main joint is connected to the three-way diverter b, and the two fourth connecting pipes are respectively connected to the three-way diverter b.

[0017] Further preferably, the two branch drainage components include a second stop valve connected to the discharge port of the negative pressure generating container and a fifth connecting pipeline connected to the second stop valve.

[0018] It is further preferred that the main discharge assembly includes two three-way diverters c respectively connected to the two fifth connecting pipes, a sixth connecting pipe connecting the two three-way diverters c, a plugging head connected to one of the three-way diverters c, and a seventh connecting pipe connecting the other three-way diverter c to the water-gas separator inlet.

[0019] Further preferably, the water-gas separator is connected to an air outlet pipeline at the top and a liquid outlet pipeline at the bottom.

[0020] This application achieves the following beneficial effects:

[0021] The negative pressure machine provided in this application is equipped with two negative pressure generating containers, which can continue to perform suction work when one of them is damaged. This application also provides a pressure regulating component to adjust the air pressure, thereby ensuring the stability of the air pressure and having high practicality.

[0022] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure of the present application and, together with the description, serve to explain the principles of the disclosure.

[0024] Figure 1 A schematic diagram of the three-dimensional structure disclosed in this application;

[0025] Figure 2 This is a schematic diagram of the top view of the structure disclosed in this application;

[0026] In the figure: 10, water-gas separator; 11, air outlet pipeline; 12, liquid outlet pipeline; 20, negative pressure generating container; 30, branch air inlet assembly; 31, first stop valve; 32, first connecting pipeline; 40, main air inlet assembly; 41, three-way diverter a; 42, air inlet pipeline; 43, four-way diverter; 50, pressure regulating assembly; 60, branch water inlet assembly; 61, second connecting pipeline; 62, solenoid valve; 63, third connecting pipeline; 64, water inlet branch; 65, fourth connecting pipeline; 70, main water inlet assembly; 71, water inlet main joint; 72, three-way diverter b; 80, branch drain assembly; 81, second stop valve phase; 82, fifth connecting pipeline; 90, main drain assembly; 91, three-way diverter c; 92, sixth connecting pipeline; 93, plugging head; 94, seventh connecting pipeline. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0028] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application.

[0029] Example

[0030] In order to solve the problem that the negative pressure machine in the prior art is only equipped with a negative pressure generating container 20, the air pressure cannot be adjusted, and the suction work will be terminated when the motor of the negative pressure generating container 20 fails, Figure 1 and Figure 2 As shown, the present application discloses a negative pressure machine, comprising a water-gas separator 10 and two negative pressure generating containers 20;

[0031] The air inlets of the two negative pressure generating containers 20 are respectively connected to the branch air inlet components 30, and the two branch air inlet components 30 are commonly connected to the main air inlet component 40;

[0032] The main air inlet assembly 40 is provided with a pressure regulating assembly 50;

[0033] The water inlets of the two negative pressure generating containers 20 are respectively connected to the branch water inlet components 60, and the two branch water inlet components 60 are commonly connected to the main water inlet component;

[0034] The discharge ports of the two negative pressure generating containers 20 are respectively connected to the branch discharge components 80 , and the two branch discharge components 80 are commonly connected to the main discharge component 90 , and the main discharge component 90 is connected to the inlet of the water-gas separator 10 .

[0035] In specific implementation, it may include the following three situations:

[0036] In the first case, when a negative pressure generating container 20 is started, external gas first enters the corresponding branch air inlet assembly 30 through the main air inlet assembly 40 and then enters the negative pressure generating container 20. At the same time, liquid first enters the corresponding branch water inlet assembly 60 through the main water inlet assembly 70 and then enters the negative pressure generating container 20. Under the action of the negative pressure generating container 20, the gas-liquid mixture first enters the main discharge assembly 90 through the corresponding branch discharge assembly 80 and then enters the water-gas separator 10 for water-gas separation.

[0037] Second scenario: When the two negative pressure generating containers 20 are started, external air first enters the two branch air inlet assemblies 30 through the main air inlet assembly 40 and then enters the two negative pressure generating containers 20. At the same time, liquid first enters the two branch water inlet assemblies 60 through the main water inlet assembly 70 and then enters the two negative pressure generating containers 20. Under the action of the two negative pressure generating containers 20, the gas-liquid mixture in the two negative pressure generating containers 20 first enters the main discharge assembly 90 through the two branch discharge assemblies 80 and then enters the water-gas separator 10 for water-gas separation.

[0038] In the third case, when the motor of one of the negative pressure generating containers 20 fails, the other negative pressure generating container 20 starts accordingly. The specific principle is as described in the first case.

[0039] When starting one negative pressure generating container 20 or two negative pressure generating containers 20, the operator can adjust the pressure through the pressure regulating component 50 to ensure that the air pressure in one negative pressure generating container 20 or two negative pressure generating containers 20 is in a stable state.

[0040] In this embodiment, the two branch air intake assemblies 30 of the present application both include a first stop valve 31 installed on the air inlet of the negative pressure generating container 20 and a first connecting pipe 32 connected to the first stop valve 31. During the air intake process, external gas enters the negative pressure generating container 20 through the first stop valve 31 and the first connecting pipe 32, and the gas cannot be reversed after passing through the first stop valve 31.

[0041] In order to enable the two branch air intake assemblies 30 to intake air together, the main air intake assembly 40 of the present application includes a three-way diverter a41 connected to the two first connecting pipes 32, a four-way diverter 43 connected to the three-way diverter a41 and two air intake pipes 42 connected to the four-way diverter 43. The pressure regulating assembly 50 is installed on the four-way diverter 43. During specific implementation, the external gas enters the negative pressure generating container 20 through the two air intake pipes 42, the four-way separator, the three-way diverter a41, the first stop valve 31, and the first connecting pipe 32.

[0042] Specifically, the pressure regulating assembly 50 of the present application is a pressure regulating valve. When an operator operates the pressure regulating valve, the air pressure in one or two negative pressure generating containers 20 that are in operation can be adjusted.

[0043] In this embodiment, the two branch water inlet assemblies 60 of the present application both include a second connecting pipe 61 connected to the water inlet of the negative pressure generating container 20, a solenoid valve 62 connected to the second connecting pipe 61, a third connecting pipe 63 connected to the solenoid valve 62, a water inlet branch 64 connected to the third pipe, and a fourth connecting pipe 65 connected to the water inlet branch 64. After the corresponding solenoid valve 62 is opened, the liquid flowing into the fourth connecting pipe 65 enters the negative pressure generating container 20 through the water inlet branch 64, the third connecting pipe 63, the solenoid valve 62, and the second connecting pipe 61.

[0044] In order to allow the two branch water inlet assemblies 60 to take in water together, the main water inlet assembly 70 of the present application includes a water inlet main joint 71 and a three-way diverter b72. The water inlet main joint 71 is connected to the three-way diverter b72, and the two fourth connecting pipes 65 are respectively connected to the three-way diverter b72. After the liquid flows into the water inlet main joint 71, the liquid will pass through the three-way diverter b72, the fourth connecting pipe 65, the water inlet branch 64, the third connecting pipe 63, the solenoid valve 62, and the second connecting pipe 61 into the negative pressure generating container 20.

[0045] In this embodiment, the two branch discharge components 80 of the present application include a second stop valve 81 connected to the discharge port of the negative pressure generating container 20 and a fifth connecting pipeline 82 connected to the second stop valve 81. After the second stop valve 81 is opened, the gas-liquid mixture in the corresponding negative pressure generating container 20 will flow into the fifth connecting pipeline 82 through the second stop valve 81, and by setting the second stop valve 81, the outflowing gas-liquid mixture cannot be reversed.

[0046] In order to connect the two branch drainage components 80 with the water-gas separator 10, the main drainage component 90 of the present application includes two three-way diverters c91 respectively connected to the two fifth connecting pipes 82, a sixth connecting pipe 92 connecting the two three-way diverters c91, a plugging head 93 connected to one of the three-way diverters c91 and a seventh connecting pipe 94 connecting the other three-way diverter c91 to the inlet of the water-gas separator 10. The gas-liquid mixture flows into the fifth connecting pipe 82 and passes through one of the three-way diverters c91, the sixth connecting pipe 92, another three-way diverter c91, and the seventh connecting pipe 94 to the water-gas separator 10 for gas-liquid separation.

[0047] In this embodiment, the water-gas separator 10 is connected to an air outlet pipeline 11 at the top and a liquid outlet pipeline 12 at the bottom. When the water-gas separator 10 is working, the separated gas is discharged from the air outlet pipeline 11 and the separated liquid is discharged from the liquid outlet pipeline 12.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The above embodiments are intended only to illustrate the technical concepts and features of this application. Their purpose is to enable those skilled in the art to understand the content of this application and implement it accordingly. They are not intended to limit the scope of protection of this application. Any equivalent changes or modifications made in accordance with the spirit of this application shall be included in the scope of protection of this application.

Claims

1. A negative pressure machine, characterized in that: It includes a water-gas separator and two negative pressure generating containers; The air inlets of the two negative pressure generating containers are respectively connected to branch air inlet assemblies, and the two branch air inlet assemblies are commonly connected to the main air inlet assembly; The main air intake assembly is provided with a pressure regulating assembly; The water inlets of the two negative pressure generating containers are respectively connected to a branch water inlet assembly, and the two branch water inlet assemblies are commonly connected to a main water inlet assembly; The discharge ports of the two negative pressure generating containers are respectively connected to branch discharge components, and the two branch discharge components are commonly connected to a main discharge component, and the main discharge component is connected to the inlet of the water-gas separator.

2. A negative pressure machine according to claim 1, characterized in that: The two branch air inlet components each include a first stop valve installed on the air inlet of the negative pressure generating container and a first connecting pipeline connected to the first stop valve.

3. A negative pressure machine according to claim 2, characterized in that: The main air intake assembly includes a three-way splitter a connected to the two first connecting pipelines, a four-way splitter connected to the three-way splitter a, and two air intake pipelines connected to the four-way splitter. The pressure regulating assembly is installed on the four-way splitter.

4. A negative pressure machine according to claim 3, characterized in that: The pressure regulating component is a pressure regulating valve.

5. A negative pressure machine according to claim 1, characterized in that: Both branch water inlet assemblies include a second connecting pipe connected to the water inlet of the negative pressure generating container, a solenoid valve connected to the second connecting pipe, a third connecting pipe connected to the solenoid valve, a water inlet branch connected to the third pipe, and a fourth connecting pipe connected to the water inlet branch.

6. A negative pressure machine according to claim 5, characterized in that: The main water inlet assembly includes a water inlet main joint and a three-way diverter b, the water inlet main joint is connected to the three-way diverter b, and the two fourth connecting pipes are respectively connected to the three-way diverter b.

7. The negative pressure machine according to claim 1, characterized in that: The two branch discharge components include a second stop valve connected to the discharge port of the negative pressure generating container and a fifth connecting pipeline connected to the second stop valve.

8. A negative pressure machine according to claim 7, characterized in that: The main discharge assembly includes two three-way diverters c respectively connected to the two fifth connecting pipes, a sixth connecting pipe connecting the two three-way diverters c, a plugging head connected to one of the three-way diverters c, and a seventh connecting pipe connecting the other three-way diverter c to the water-gas separator inlet.

9. The negative pressure machine according to claim 1, characterized in that: The upper portion of the water-gas separator is connected to an air outlet pipeline, and the lower portion is connected to a liquid outlet pipeline.

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