A multi-stage negative pressure balancing device

Abstract

The application relates to a multi-stage negative pressure balancing device in the technical field of vacuum pumps, which comprises an upper mounting piece and a lower mounting piece, the upper mounting piece is in sealing connection with the lower mounting piece, an inner mounting piece is arranged in the upper mounting piece, a cavity four is arranged in the inner mounting piece, a connecting pipe is communicated with the top end of the upper mounting piece, the connecting pipe is communicated with the cavity four, a valve is arranged on the connecting pipe, a plurality of independent cavities are arranged in the upper mounting piece, the cavity four is communicated with each cavity one by one through a plurality of communicating pipes, a cavity five is arranged in the lower mounting piece, the cavity four is communicated with the cavity five through a communicating pipe, and a valve is arranged on each communicating pipe. The application has good applicability, good adjusting performance and fast response speed.

Description

Technical Field

[0001] This invention relates to a multi-stage negative pressure balancing device, belonging to the field of vacuum pump technology. Background Technology

[0002] In industry, existing technologies mostly choose to directly connect a vacuum pump and a vacuum gauge to maintain a negative pressure state in containers, storage tanks, and other cavities. The vacuum pump is used to achieve the negative pressure state of the container, and the vacuum gauge is used to measure the pressure value inside the container.

[0003] However, if a negative pressure environment needs to be maintained when storing and exchanging heat in a high-temperature heat storage chamber, the vacuum pump is no longer suitable because the temperature inside the chamber is much higher than the working temperature of the vacuum pump (20-40℃). For medical devices such as negative pressure ventilators that need to maintain a vacuum, the existing technology has drawbacks such as slow response, long negative pressure extraction time, and increased pressure fluctuations, so improvements are urgently needed. Summary of the Invention

[0004] In order to overcome the shortcomings of existing negative pressure or vacuum states, such as poor applicability, slow response speed, and low working efficiency, this invention designs a multi-stage negative pressure balancing device, which has good applicability, good adjustment performance, and fast response speed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage negative pressure balancing device includes an upper mounting component and a lower mounting component, which are sealed together. An inner mounting component is located inside the upper mounting component, and a fourth chamber is located inside the inner mounting component. A connecting pipe is connected to the top of the upper mounting component, and the connecting pipe is connected to the fourth chamber and equipped with a valve. The upper mounting component also contains several independent cavities, and the fourth chamber is connected to each cavity via several connecting pipes. The lower mounting component contains a fifth chamber, and the fourth chamber is also connected to the fifth chamber via connecting pipes. Each connecting pipe is equipped with a valve.

[0007] Furthermore, the inner mounting component is arranged in a rectangular frame structure, and there are three cavities, namely cavity one, cavity two and cavity three, and the three cavities surround the inner mounting component.

[0008] Furthermore, the volumes of chamber four, chamber one, and chamber two are all the same, the volume of chamber three is twice the volume of chamber one, and the volume of chamber five is five times the volume of chamber one.

[0009] Furthermore, the free end of the connecting pipe is provided with an inlet flange.

[0010] Furthermore, the lower mounting component is a rectangular frame structure.

[0011] Furthermore, the internal mounting component has a regular hexahedral structure.

[0012] Furthermore, each of the three right-angle corners of the inner mounting component is connected to a partition, and the inner mounting component and the three partitions divide the internal space of the upper mounting component into chamber one, chamber two, chamber three and chamber four.

[0013] Furthermore, a transition plate connects the upper mounting component and the lower mounting component.

[0014] Furthermore, the thickness of the transition plate is five millimeters.

[0015] Furthermore, the upper mounting component and the lower mounting component are at the same height.

[0016] Compared with the prior art, the present invention has the following features and beneficial effects:

[0017] 1. In this invention, when it is necessary to maintain a negative pressure value, the negative pressure system is connected to the connecting pipe. According to the negative pressure requirement of the negative pressure system, different valves are opened in combination to provide different proportions of negative pressure values, thereby providing precise pressure control and stability for the negative pressure system to adjust the negative pressure and reducing the adjustment pressure error.

[0018] 2. In this invention, chambers one, two, three and five are used to store and release negative pressure. The volumes of the four negative pressure chambers account for 1 / 10, 1 / 10, 1 / 5 and 1 / 2 of the entire container, respectively. After the four negative pressure chambers are combined, the pressure value can be changed in steps of one-tenth, which can quickly meet the system's needs to maintain different negative pressure values, and achieve small pressure fluctuations and fast response speed when the system draws negative pressure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is an internal sectional view of the mounting component from a first perspective.

[0021] Figure 3 This is an internal sectional view of the mounting component from a second perspective.

[0022] Figure 4 This is a side sectional view of the present invention.

[0023] The attached figures are labeled as follows:

[0024] 1. Upper mounting component; 11. Chamber 1; 12. Chamber 2; 13. Chamber 3; 14. Chamber 4; 15. Internal mounting component; 16. Partition plate; 17. Transition plate; 2. Inlet flange; 3. Lower mounting component; 31. Chamber 5; 4. Second valve; 6. Fourth valve; 7. Fifth valve; 8. Sixth valve; 9. First valve; 10. Connecting pipe. Detailed Implementation

[0025] The present invention will now be described in more detail with reference to the embodiments.

[0026] like Figures 1 to 4 As shown, the multi-stage negative pressure balancing device of this embodiment includes an upper mounting component 1 and a lower mounting component 3. The upper mounting component 1 and the lower mounting component 3 are sealed together. An inner mounting component 15 is provided inside the upper mounting component 1. A chamber 4 14 is provided inside the inner mounting component 15. A connecting pipe 10 is connected to the top of the upper mounting component 1. The connecting pipe 10 is connected to the chamber 4 14 and a valve is provided on the connecting pipe 10. Three independent cavities are also provided inside the upper mounting component 1. The chamber 4 14 is connected to each cavity one by one through three connecting pipes. A chamber 5 31 is provided inside the lower mounting component 3. The chamber 4 14 is also connected to the chamber 5 31 through a connecting pipe. A valve is provided on each connecting pipe.

[0027] Furthermore, the inner mounting component 15 is arranged in a rectangular frame structure, with three cavities namely cavity one 11, cavity two 12 and cavity three 13, and the three cavities are arranged around the inner mounting component 15.

[0028] Specifically, the valves include a first valve 9 installed on the connecting pipe 10, a second valve 4 installed between chamber 4 14 and chamber 5 31, a fourth valve 6 installed between chamber 4 14 and chamber 2 12, a sixth valve 8 installed between chamber 4 14 and chamber 1 11, and a fifth valve 7 installed between chamber 4 14 and chamber 3 13.

[0029] Furthermore, the volumes of chambers 14, 11, and 2 are all the same, the volume of chamber 3 is twice that of chamber 11, and the volume of chamber 5 is five times that of chamber 11.

[0030] Furthermore, an inlet flange 2 is provided at the free end of the connecting pipe 10.

[0031] Furthermore, the lower mounting component 3 is a rectangular frame structure.

[0032] Furthermore, the internal mounting component 15 has a regular hexahedral structure.

[0033] Furthermore, each of the three right-angle corners of the inner mounting component 15 is connected to a partition 16, and the inner mounting component 15 and the three partitions 16 divide the internal space of the upper mounting component 1 into chamber one 11, chamber two 12, chamber three 13 and chamber four 14.

[0034] Furthermore, a transition plate 17 is connected between the upper mounting part 1 and the lower mounting part 3.

[0035] Furthermore, the thickness of the transition plate 17 is five millimeters.

[0036] Furthermore, the upper mounting part 1 and the lower mounting part 3 are at the same height.

[0037] Working principle of the invention:

[0038] When storing negative pressure, connect the vacuum pump to the connecting pipe 10, and then open all the valves so that negative pressure gas is stored in each cavity and inside chamber 3 13.

[0039] When it is necessary to maintain a negative pressure value, connect the negative pressure system to the connecting pipe 10. According to the negative pressure requirement of the negative pressure system, open different valves in combination to provide different proportions of negative pressure values, provide precise pressure control and stability for the negative pressure system to regulate negative pressure, and reduce the error of regulating pressure.

[0040] The system employs four chambers: chamber 11, chamber 2, chamber 3, and chamber 5, which are used to store and release negative pressure. The volumes of the four negative pressure chambers are 1 / 10, 1 / 10, 1 / 5, and 1 / 2 of the entire container, respectively. When the four negative pressure chambers are combined, the pressure values ​​can be varied in increments of one-tenth, which can quickly meet the system's needs for maintaining different negative pressure values. This results in low pressure fluctuations and a fast response speed when the system pumps out negative pressure.

[0041] In the description of this invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A multi-stage negative pressure balancing device, characterized in that: The device includes an upper mounting component (1) and a lower mounting component (3), which are sealed together. The upper mounting component (1) has an inner mounting component (15) inside, and the inner mounting component (15) has a fourth chamber (14) inside. The top of the upper mounting component (1) is connected to a connecting pipe (10), which is connected to the fourth chamber (14) and has a valve. The upper mounting component (1) also has several independent cavities inside, and the fourth chamber (14) is connected to each cavity one by one through several connecting pipes. The lower mounting component (3) has a fifth chamber (31) inside, and the fourth chamber (14) is also connected to the fifth chamber (31) through a connecting pipe. Each connecting pipe has a valve. The inner mounting component (15) is arranged in a rectangular frame structure, and there are three cavities, namely cavity one (11), cavity two (12) and cavity three (13), and the three cavities surround the inner mounting component (15); The volumes of chamber four (14), chamber one (11) and chamber two (12) are all the same. The volume of chamber three (13) is twice that of chamber one (11). The volume of chamber five (31) is five times that of chamber one (11).

2. The multi-stage negative pressure balancing device according to claim 1, characterized in that: The free end of the connecting pipe (10) is provided with an inlet flange (2).

3. The multi-stage negative pressure balancing device according to claim 1, characterized in that: The lower mounting component (3) is a rectangular frame structure.

4. The multi-stage negative pressure balancing device according to claim 1, characterized in that: The internal mounting component (15) has a regular hexahedral structure.

5. A multi-stage negative pressure balancing device according to claim 4, characterized in that: The inner mounting component (15) has three right-angle corners connected to partitions (16), and the inner mounting component (15) and the three partitions (16) divide the internal space of the upper mounting component (1) into chamber one (11), chamber two (12), chamber three (13) and chamber four (14).

6. A multi-stage negative pressure balancing device according to claim 1, characterized in that: A transition plate (17) is connected between the upper mounting part (1) and the lower mounting part (3).

7. A multi-stage negative pressure balancing device according to claim 6, characterized in that: The thickness of the transition plate (17) is five millimeters.

8. A multi-stage negative pressure balancing device according to claim 1, characterized in that: The upper mounting part (1) and the lower mounting part (3) are at the same height.

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