Air pressure control box suitable for laboratory

Abstract

The utility model relates to the technical field of air pressure control boxes, and discloses an air pressure control box suitable for a laboratory, which comprises a box body and a cover body, the cover body is detachably arranged on the box body, and the box body and the cover body form a sealed cavity; the air flow pump penetrates through the box body and is communicated with the cavity, and the air flow pump is used for adjusting the air pressure in the cavity; and the locking assembly is installed between the box body and the cover body, and the locking assembly is used for tightly installing the cover body on the box body, so that the box body and the cover body form a sealed cavity. According to the utility model, the structural design is simplified, necessary functions are maintained, customized adjustment or upgrading is easier to carry out according to specific experiment requirements, for example, airflow pumps of different specifications are replaced to adapt to different air pressure adjusting ranges, and the universality and adaptability of equipment are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic control box technology, and in particular to a pneumatic control box suitable for laboratory use. Background Technology

[0002] Currently, laboratories widely use pneumatic control devices to meet various needs in scientific research. Especially in biomedical experiments, precise control of the pneumatic environment is crucial for simulating different physiological conditions. These devices typically integrate high-precision electronic control systems, with components including servo valves, pressure sensors, and mass flow controllers. These components work together to ensure precise pressure and flow control, suitable for various experimental scenarios such as cell culture, animal experiments, and medical device testing.

[0003] Most of the existing air pressure control devices on the market are commercial products, such as high-pressure controllers for hyperbaric oxygen chamber research, low-pressure devices for simulating cell hypoxia experiments, and gas regulation devices for ventilator performance testing. These devices integrate advanced sensor technology and complex automated control modules, enabling precise control of multiple parameters, making them ideal for high-precision experiments.

[0004] However, these devices also have some limitations. First, the high manufacturing cost results in a high price, which may be unaffordable for laboratories with limited budgets. Second, due to the complex structure of the devices, installation, operation, and maintenance usually require specialized personnel. Furthermore, these devices are often specialized and lack versatility, making it difficult to adapt to diverse experimental needs. Especially when simulating low-pressure or high-pressure environments close to atmospheric pressure (such as pressure differences within the range of 0-40 hPa), the high-precision functions of existing devices may seem overly complex, increasing operational difficulty and cost. Utility Model Content

[0005] The purpose of this invention is to provide a pneumatic control box suitable for laboratories, so as to solve the problems of complex structure and high cost of existing pneumatic control boxes.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A pressure control box suitable for laboratory use, comprising:

[0008] A housing and a cover, wherein the cover is detachably mounted on the housing, and the housing and the cover form a sealed cavity;

[0009] An air pump, which passes through the housing and is connected to the cavity, is used to regulate the air pressure inside the cavity;

[0010] A locking assembly is installed between the housing and the cover, the locking assembly being used to tightly install the cover onto the housing so that the housing and the cover form a sealed cavity.

[0011] Furthermore, the locking assembly includes a mounting base and a driving component. One end of the mounting base is rotatably mounted on the housing, and during the rotation of the mounting base, the other end can be positioned above the cover. The driving component is mounted on the other end of the mounting base. When the other end of the mounting base is positioned above the cover, the output end of the driving component can abut against the cover, thereby tightly mounting the cover onto the housing.

[0012] Furthermore, the locking assembly also includes a stress-dispersing element, which is installed at the output end of the drive element and is used to abut against the cover.

[0013] Furthermore, it also includes an elastic component mounted on the cover and disposed along the thickness direction of the cover; the elastic component is configured to extend and retract under the pressure of the drive member and abut against the housing.

[0014] Furthermore, the elastic component includes a spring and a limiting post, both of which are mounted on the cover along the thickness direction of the cover, and the spring is sleeved on the limiting post.

[0015] Furthermore, a first sliding component is formed on the side wall of the box, and the first sliding component extends along the length direction of the box; a second sliding component is provided on the cover, and the second sliding component is installed on the side of the cover near the box via the elastic component; the first sliding component and the second sliding component are adapted to each other so that the cover is slidably installed on the box.

[0016] Furthermore, the first sliding component is a groove, and the second sliding component is a slider.

[0017] Furthermore, it also includes a sealing ring, which is installed on the housing and located between the housing and the cover to seal the cavity.

[0018] Furthermore, the number of locking components is not less than four, and each locking component is evenly distributed on the housing.

[0019] Furthermore, it also includes a differential pressure gauge, which passes through the housing and is connected to the cavity, and is used to measure the pressure inside the cavity.

[0020] The beneficial effects achieved by this utility model are:

[0021] 1. This utility model employs a detachable cover design combined with a locking assembly to achieve a seal. While maintaining high-performance sealing, this pneumatic control box significantly simplifies the overall structure. This not only reduces manufacturing costs but also simplifies assembly and maintenance, improving the equipment's cost-effectiveness.

[0022] 2. The application of the locking component in this utility model makes the opening and closing of the cover faster and easier, and can be completed without complicated tools or professional skills, thus improving the convenience and efficiency of experimental operations.

[0023] 3. Due to the simplified structural design, this utility model's air pressure control box can be more easily customized or upgraded according to specific experimental needs while maintaining the necessary functions. For example, different specifications of air pumps can be replaced to adapt to different air pressure adjustment ranges, thus enhancing the equipment's versatility and adaptability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the assembly structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the connection structure between the box body and the cover of this utility model;

[0027] Figure 4 This is a schematic diagram of the box structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the cover structure of this utility model;

[0029] Figure 6 for Figure 5 A schematic diagram of the AA cross-sectional structure;

[0030] Wherein, 1 - box body;

[0031] 2-Cap;

[0032] 3-Airflow pump;

[0033] 4-Locking assembly, 41-Mounting base, 42-Driver, 43-Stress dispersion component;

[0034] 5-Elastic component, 51-Spring, 52-Limit post;

[0035] 6-First sliding component;

[0036] 7-Second sliding component;

[0037] 8-Sealing ring;

[0038] 9-Differential pressure gauge.

[0039] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0042] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0043] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0044] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0045] The technical solution of this embodiment will be described in detail below with reference to the accompanying drawings.

[0046] like Figures 1-3 As shown, this embodiment proposes a pneumatic control box suitable for laboratory use, comprising:

[0047] The enclosure consists of a housing 1 and a cover 2, the cover 2 being detachably mounted on the housing 1, and the housing 1 and the cover 2 forming a sealed cavity; an air pump 3 passing through the housing 1 and connected to the cavity, the air pump 3 being used to regulate the air pressure inside the cavity; and a locking assembly 4, the locking assembly 4 being installed between the housing 1 and the cover 2, the locking assembly 4 being used to tightly mount the cover 2 onto the housing 1 so that the housing 1 and the cover 2 form a sealed cavity.

[0048] In this embodiment, the pneumatic control box design uses high-strength and lightweight aluminum alloy profiles (such as 6061-T6) as the main structural frame, ensuring structural stability and ease of operation. The box body 1 and the cover 2 are made of transparent polycarbonate (PC) sheets with a thickness of not less than 5 mm. This material not only possesses excellent impact resistance and corrosion resistance but also maintains high transparency, greatly facilitating observation during the experiment.

[0049] To prevent the pressure control box from rupturing under extreme conditions, this embodiment is equipped with a mechanical safety valve on the top of the cover 2. The safety valve is set to a pressure of ±45 hPa. Once the pressure inside the box exceeds this set value, the safety valve will automatically open to release pressure, thereby effectively ensuring experimental safety.

[0050] In terms of airflow control, this embodiment uses a miniature diaphragm pump as the core component of the airflow pump 3, with a flow rate range of 0–5 L / min, and is paired with a proportional solenoid valve with a response time of no more than 50 milliseconds. Through precise adjustment by the PID controller, accurate control of the airflow rate is achieved, thereby ensuring the stability of the air pressure inside the chamber.

[0051] In addition, the mechanical safety valve also adopts a solenoid valve design with a silencer. This improvement not only reduces noise interference during equipment operation, but also enhances the safety valve's rapid pressure relief capability.

[0052] To facilitate equipment assembly and maintenance, standard quick-connect air circuit interfaces (such as SMC KQ2 series) are used between the air pump 3, the safety valve and the housing 1. This interface design greatly simplifies the equipment connection process and improves work efficiency.

[0053] Finally, the side wall of enclosure 1 is reserved with multiple spare interfaces. These interfaces are currently sealed with blind plugs, but in the future, sensors or additional equipment can be easily expanded according to experimental needs, providing strong support for the flexibility and scalability of the experiment.

[0054] like Figure 1 As shown, the locking assembly 4 includes a mounting base 41 and a driving member 42. One end of the mounting base 41 is rotatably mounted on the housing 1, and the other end of the mounting base 41 can be positioned above the cover 2 during rotation. The driving member 42 is mounted on the other end of the mounting base 41. When the other end of the mounting base 41 is positioned above the cover 2, the output end of the driving member 42 can abut against the cover 2, thereby tightly mounting the cover 2 onto the housing 1.

[0055] In this embodiment, the mounting base 41 is designed as an L-shaped structure, with one end connected to the housing 1 via a hinge. The driving component 42 is in the form of a pneumatic drive rod, powered by an external air pump (whose operating pressure range is set between low pressure 0.5 and 1 bar). When the other end of the mounting base 41 is rotated to the position above the cover 2, the output end of the pneumatic drive rod (i.e., the driving component 42) can precisely abut against the cover 2, thereby achieving a tight installation between the cover 2 and the housing 1.

[0056] like Figure 1 As shown, the locking assembly 4 also includes a stress-dispersing component 43, which is installed at the output end of the drive component 42 and is used to abut against the cover 2.

[0057] In this embodiment, the stress-dispersing member 43 is designed as a plate-like structure with a specific length and width. It is installed on the output end of the drive member 42 and is mainly used to contact the cover 2 and disperse the stress generated therefrom.

[0058] like Figures 1-3 As shown, it also includes an elastic component 5, which is mounted on the cover 2 and is arranged along the thickness direction of the cover 2; the elastic component 5 is configured to extend and retract under the pressure of the drive member 42 and abut against the box 1.

[0059] The elastic component 5 is arranged along the thickness direction of the cover 2. When the driving component 42 applies pressure, it can extend and retract to tightly abut against the housing 1, effectively filling the tiny gap between the cover 2 and the housing 1, thereby enhancing the overall sealing performance and ensuring the stability of the internal environment of the pneumatic control box. At the same time, during the locking process, the elastic component 5 plays a buffering role, absorbing and dispersing the impact force generated by the driving component 42, avoiding potential damage when the cover 2 comes into direct contact with the housing 1, and protecting the structural integrity of the housing and the cover.

[0060] In this embodiment, multiple elastic components 5 are designed, and these components are evenly distributed on the cover 2. This layout ensures that the cover 2 is subjected to uniform force when pressure is applied by the drive member 42, further enhancing the reliability of the seal and the stability of the structure.

[0061] like Figure 5 and Figure 6 As shown, the elastic component 5 includes a spring 51 and a limiting post 52. The spring 51 and the limiting post 52 are both installed on the cover 2 along the thickness direction of the cover 2, and the spring 51 is sleeved on the limiting post 52.

[0062] like Figures 1-4 As shown, a first sliding component 6 is formed on the side wall of the box 1, and the first sliding component 6 extends along the length direction of the box 1; a second sliding component 7 is provided on the cover 2, and the second sliding component 7 is installed on the side of the cover 2 near the box 1 through the elastic component 5; the first sliding component 6 and the second sliding component 7 are adapted to each other so that the cover 2 is slidably installed on the box 1.

[0063] like Figures 1-4 As shown, the first sliding component 6 is a groove, and the second sliding component 7 is a slider.

[0064] In this embodiment, the matching design of the first sliding component 6 (slide groove) and the second sliding component 7 (slider) allows the cover 2 to be easily slidably installed and removed along the length of the housing 1. This design simplifies the operation process and improves the efficiency of experimental preparation and cleaning. Simultaneously, the cooperation between the slide groove and the slider not only ensures the accurate positioning of the cover 2 when closed, but also enhances the stability of the connection between the housing 1 and the cover 2 through its structural characteristics. This helps maintain the overall structural strength of the housing 1 under pressure changes and prevents deformation from affecting the sealing performance.

[0065] like Figures 1-4 As shown, it also includes a sealing ring 8, which is installed on the housing 1 and located between the housing 1 and the cover 2 to seal the cavity.

[0066] In this embodiment, the sealing ring 8 is a silicone sealing ring (material: fluororubber) to ensure a tight seal of the cavity.

[0067] like Figures 1-4 As shown, there are no fewer than four locking components 4, and each locking component 4 is evenly distributed on the housing 1. This layout ensures that the cover 2 is subjected to a balanced and sufficient locking force when closed, thereby greatly enhancing the reliability of the seal, effectively preventing gas leakage, and ensuring the stability of the internal environment.

[0068] The even distribution of multiple locking components 4 not only enhances the sealing performance, but also improves the structural stability of the connection between the housing 1 and the cover 2 by dispersing the locking force. This helps to resist the influence of external pressure or vibration on the structure of the housing 1 and extends the service life of the pneumatic control box.

[0069] like Figures 1-4 As shown, it also includes a differential pressure gauge 9, which passes through the housing 1 and is connected to the cavity. The differential pressure gauge 9 is used to measure the pressure inside the cavity. The introduction of the differential pressure gauge 9 allows the experimenter to monitor pressure changes inside the cavity in real time and accurately. By reading the value of the differential pressure gauge, the air pressure control parameters can be adjusted in a timely manner to ensure that the experiment is carried out within the set pressure range, thereby improving the accuracy and controllability of the experiment.

[0070] In this embodiment, a power strip passes through the box to ensure that electricity can be used inside the box, and hooks are installed inside the box for easy hanging of items.

[0071] In summary, the specific usage process is as follows:

[0072] Experimental preparation stage

[0073] 1. Placement of experimental subjects and equipment: Mice that have been injected with 5 μL of complete Freund's adjuvant to establish a knee arthritis model are placed in chamber 1 of the pneumatic control chamber.

[0074] 2. Inspection and Pre-adjustment: Inspect all components of the pressure control box for integrity, especially the locking assembly 4, elastic assembly 5, first sliding assembly 6 and second sliding assembly 7, sealing ring 8, and differential pressure gauge 9. Verify the calibration status of differential pressure gauge 9 to ensure it can accurately measure the pressure inside the chamber.

[0075] Operational phase

[0076] 1. Cover and Locking: Gently place the cover 2 onto the housing 1, ensuring the second sliding component 7 (i.e., the slider) aligns with the first sliding component 6 (i.e., the groove) on the housing 1 and begin sliding installation. As the cover 2 slides into place, activate the locking component 4. By rotating the mounting base 41, the output end of the drive component 42 (possibly equipped with a stress-dispersing component 43) abuts against the cover 2, achieving a tight lock. Ensure all locking components 4 are evenly distributed and function effectively.

[0077] 2. Pressure Regulation: Connect and start the air pump 3. Adjust the flow rate of the air pump according to the experimental requirements to control the air pressure inside the chamber 1. Observe the reading on the differential pressure gauge 9 to precisely adjust the air pressure to the required level. For example, when establishing a specific pressure environment, it may be necessary to first reduce the air pressure to 15 hPa lower than atmospheric pressure and maintain this for 30 minutes, then maintain the air pressure within the range of 15 ± 2 hPa for 30 minutes, and finally restore the air pressure to atmospheric pressure.

[0078] 3. Experiment Procedure: Under the set pressure conditions, allow the experiment to proceed for the required time. During this period, periodically observe the differential pressure gauge readings to ensure the pressure remains stable.

[0079] End and follow-up processing

[0080] 1. Pressure Restoration and Unlocking: After the experiment, first turn off the air pump 3. Release the locking state of the cover 2 by reversing the operation of the locking component 4. It may be necessary to adjust the operating mode of the air pump 3 to gradually restore the air pressure inside the cavity to atmospheric pressure.

[0081] 2. Remove the experimental subject: After the air pressure has fully recovered, carefully slide and remove cover 2 to expose the experimental mouse inside chamber 1. Remove the mouse to prepare for subsequent pain threshold testing or other experimental steps.

[0082] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A pneumatic control box suitable for laboratory use, characterized in that, include: A box body (1) and a cover body (2), wherein the cover body (2) is detachably mounted on the box body (1), and the box body (1) and the cover body (2) form a sealed cavity; An air pump (3) is connected to the cavity through the housing (1) and is used to regulate the air pressure inside the cavity. A locking assembly (4) is installed between the housing (1) and the cover (2). The locking assembly (4) is used to tightly install the cover (2) onto the housing (1) so that the housing (1) and the cover (2) form a sealed cavity.

2. The gas pressure control box for a laboratory according to claim 1, wherein The locking assembly (4) includes a mounting base (41) and a driving member (42). One end of the mounting base (41) is rotatably mounted on the housing (1). During the rotation of the mounting base (41), the other end can be positioned above the cover (2). The driving member (42) is mounted on the other end of the mounting base (41). When the other end of the mounting base (41) is positioned above the cover (2), the output end of the driving member (42) can abut against the cover (2), thereby tightly mounting the cover (2) onto the housing (1).

3. The gas pressure control box for a laboratory according to claim 2, wherein The locking assembly (4) further includes a stress-dispersing component (43), which is installed at the output end of the drive component (42) and is used to abut against the cover (2).

4. The barometric pressure control box for a laboratory according to claim 2, wherein It also includes an elastic component (5) mounted on the cover (2) and arranged along the thickness direction of the cover (2); the elastic component (5) is configured to extend and retract under the pressure of the drive member (42) and abut against the box (1).

5. A pressure control box suitable for laboratory use according to claim 4, characterized in that, The elastic component (5) includes a spring (51) and a limiting post (52). The spring (51) and the limiting post (52) are both installed on the cover (2) along the thickness direction of the cover (2), and the spring (51) is sleeved on the limiting post (52).

6. The barometric pressure control box for a laboratory according to claim 4, wherein A first sliding component (6) is formed on the side wall of the box (1), and the first sliding component (6) extends along the length direction of the box (1); a second sliding component (7) is provided on the cover (2), and the second sliding component (7) is installed on the side of the cover (2) close to the box (1) through the elastic component (5); the first sliding component (6) and the second sliding component (7) are adapted to each other so that the cover (2) is slidably installed on the box (1).

7. The barometric pressure control box for a laboratory according to claim 6, wherein The first sliding component (6) is a groove, and the second sliding component (7) is a slider.

8. The barometric pressure control box for a laboratory according to claim 1, wherein It also includes a sealing ring (8), which is installed on the housing (1) and located between the housing (1) and the cover (2) to seal the cavity.

9. The barometric pressure control box for a laboratory according to claim 1, wherein The number of locking components (4) is not less than four, and each locking component (4) is evenly distributed on the housing (1).

10. A pressure control box suitable for laboratory use according to claim 1, characterized in that, Also included is a differential pressure gauge (9) which communicates with the cavity through the box (1), the differential pressure gauge (9) being used to measure the pressure in the cavity.

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