A closed environment experimental device

Abstract

The utility model discloses a closed environment experimental device, which relates to the technical field of experimental equipment, including a box and an adjustment component, wherein an exhaust hole is provided at the center of the top of the box, and a fixed box is arranged in the middle of the top surface of the box, and the top of the fixed box is connected with an adjustment component, and the adjustment component includes a knob, a screw sleeve, a screw, an adjustment plate, a slider, a slide bar, a sealing plug and a spring, and the bottom of the knob is connected with a screw sleeve, and the internal thread of the screw sleeve is connected with a screw. The closed environment experimental device is provided with an adjustment component, and when it is necessary to change the pressure relief condition, only the knob needs to be turned to drive the screw sleeve to rotate, and at this time the slider will limit the rotation of the adjustment plate and the screw, so the height of the adjustment plate can be controlled by the screw, and when the height of the adjustment plate is reduced, the spring is compressed, so that a larger pressure can be provided to the sealing plug, and when the adjustment plate is raised, the pressure provided by the spring will be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a closed environment experimental device. Background Art

[0002] Experiment refers to one of the basic methods of scientific research. According to the purpose of scientific research, it excludes external influences as much as possible, highlights the main factors and uses some special instruments and equipment to artificially change, control or simulate the research object to make certain things happen or reproduce. The corresponding experimental environment can be simulated through a closed environment experimental device.

[0003] For example, the utility model with application number CN202022106496.4 discloses a closed environment experimental device. In this utility model, when the air pressure in the sealed cabin is too high, the air outlet safety valve can discharge the internal gas, and when the air pressure in the sealed cabin is too low, the air inlet safety valve can transport the external gas into the device to achieve the air pressure balance inside and outside the sealed cabin and ensure the safety of the experimental environment. However, in the actual use of this type of device, due to the single elastic force of the spring, it can only simulate a single air pressure environment during simulation, resulting in certain limitations in use.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a closed environment experimental device is provided. Utility Model Content

[0005] The purpose of the utility model is to provide a closed environment experimental device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed environment experimental device, comprising a box body and an adjustment component, an exhaust hole is opened in the center of the top of the box body, and a fixed box is arranged in the middle of the top surface of the box body, the top of the fixed box is connected with the adjustment component, the adjustment component comprises a knob, a screw sleeve, a screw, an adjustment plate, a slider, a slide rod, a sealing plug and a spring, the bottom of the knob is connected with the screw sleeve, and the internal thread of the screw sleeve is connected with the screw rod, the bottom of the screw rod is arranged with an adjustment plate, and sliders are fixed on both sides of the adjustment plate, the internal sliding connection of the adjustment plate is connected with the slide rod, and the bottom of the slide rod is fixed with a sealing plug, and the top outer end of the sealing plug is provided with a spring.

[0007] Furthermore, the sliding block is slidably connected to the fixing box, and the fixing box is rotatably connected to the threaded sleeve.

[0008] Furthermore, the screw is hollow, and the inner diameter of the screw sleeve is substantially consistent with the diameter of the sliding rod.

[0009] Furthermore, a transparent plate is arranged on one side of the fixed box, and a scale is arranged on one side of the transparent plate. A pointer is slidably connected to the other side of the transparent plate, and the pointer is fixedly connected to the adjustment plate.

[0010] Furthermore, one end of the fixed box is connected to a gas collecting assembly, the gas collecting assembly includes a gas collecting cylinder and a through hole, one end of the fixed box is connected to the gas collecting cylinder, and a through hole is opened on one side of the gas collecting cylinder.

[0011] Furthermore, the gas collecting assembly also includes a piston plate and a guide rod. The interior of the gas collecting cylinder is slidably connected to the piston plate, and the guide rod is symmetrically arranged on one side of the piston plate.

[0012] Furthermore, the guide rod is slidably connected to the gas collecting cylinder, and the gas collecting cylinder is fixedly connected to the box body.

[0013] Furthermore, the gas collecting assembly also includes a valve body and a joint. The valve body is arranged at one end of the top of the gas collecting cylinder, and the top of the valve body is connected to the joint.

[0014] The utility model provides a closed environment experimental device, which has the following beneficial effects:

[0015] 1. The utility model provides an adjustment component. When the pressure relief condition needs to be changed, the screw sleeve can be driven to rotate by turning the knob. At this time, the slider will limit the rotation of the adjustment plate and the screw. Therefore, the height of the adjustment plate can be controlled by the screw. When the height of the adjustment plate is reduced, the spring is compressed, thereby providing a greater pressure on the sealing plug. When the adjustment plate is raised, the pressure provided by the spring will decrease. The position of the pointer on the scale can also be observed through the transparent plate. The elastic force of the spring is proportional to its displacement, thereby improving the accuracy of control and helping to expand the scope of use of the experimental device.

[0016] 2. The utility model provides a gas collecting assembly. When the gas inside the box leaks out, it will pass through the fixed box and flow into the gas collecting cylinder. When the gas increases, it will push the piston plate under the action of air pressure, thereby expanding the volume formed between the piston plate and the gas collecting cylinder. At the same time, the guide rod is used to improve the stability of the piston plate during movement to prevent the piston plate from tilting, so that the discharged gas can be collected. When sampling, after connecting the pipeline to the joint, the valve body is opened and the guide rod is pushed to discharge the gas inside the gas collecting cylinder, thereby facilitating the collection and analysis of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of a box of a closed environment experimental device of the utility model;

[0018] Figure 2It is a schematic diagram of the cross-sectional three-dimensional structure of an adjustment component of a closed environment experimental device of the utility model;

[0019] Figure 3 The utility model is a schematic diagram of the structure of a gas collecting component of a closed environment experimental device.

[0020] In the figure: 1. box body; 2. exhaust hole; 3. fixed box; 4. adjustment assembly; 401. knob; 402. screw sleeve; 403. screw; 404. adjustment plate; 405. slider; 406. slide rod; 407. sealing plug; 408. spring; 5. transparent plate; 6. scale; 7. pointer; 8. gas collecting assembly; 801. gas collecting cylinder; 802. through hole; 803. piston plate; 804. guide rod; 805. valve body; 806. joint. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figure 1 and Figure 2As shown, a closed environment experimental device includes a box body 1 and an adjustment component 4, an exhaust hole 2 is opened in the center of the top of the box body 1, and a fixed box 3 is placed in the middle of the top surface of the box body 1, and the top of the fixed box 3 is connected to the adjustment component 4, and the adjustment component 4 includes a knob 401, a screw sleeve 402, a screw rod 403, an adjustment plate 404, a slider 405, a slide rod 406, a sealing plug 407 and a spring 408, and the bottom of the knob 401 is connected to the screw sleeve 402, and the screw sleeve 403 is connected to the screw sleeve 404. The inner thread of 02 is connected with a screw rod 403, and an adjusting plate 404 is arranged at the bottom of the screw rod 403, and sliders 405 are fixed on both sides of the adjusting plate 404. By turning the knob 401 to drive the screw sleeve 402 to rotate, the height of the adjusting plate 404 can be controlled through the screw rod 403. The inner sliding connection of the adjusting plate 404 is connected with a slide rod 406, and a sealing plug 407 is fixed at the bottom of the slide rod 406. A spring 408 is arranged on the top outer end of the sealing plug 407. When the adjusting plate When the height of 404 is reduced, the spring 408 is compressed, thereby providing a greater pressure on the sealing plug 407, and when the adjusting plate 404 is raised, the pressure provided by the spring 408 will decrease, the slider 405 is slidably connected to the fixed box 3, and the fixed box 3 is rotatably connected to the screw sleeve 402, the slider 405 will limit the rotation of the adjusting plate 404 and the screw 403, the screw 403 is hollow, and the inner diameter of the screw sleeve 402 is substantially consistent with the diameter of the slide bar 406, the slide bar 406 can limit the spring 408, a transparent plate 5 is arranged on one side of the fixed box 3, and a scale 6 is arranged on one side of the transparent plate 5, a pointer 7 is slidably connected to the other side of the transparent plate 5, and the pointer 7 is fixedly connected to the adjusting plate 404, the position of the pointer 7 on the scale 6 can be observed through the transparent plate 5, and the elastic force of the spring 408 is the product of its deformation variable and elastic coefficient, thereby improving the accuracy of control, which is conducive to expanding the scope of use of the experimental device.

[0023] like Figure 3As shown, one end of the fixed box 3 is connected to a gas collecting assembly 8, and the gas collecting assembly 8 includes a gas collecting cylinder 801 and a through hole 802. One end of the fixed box 3 is connected to the gas collecting cylinder 801, and a through hole 802 is opened on one side of the gas collecting cylinder 801. The air pressure inside one end of the gas collecting cylinder 801 can be balanced through the through hole 802. The gas collecting assembly 8 also includes a piston plate 803 and a guide rod 804. The piston plate 803 is slidably connected to the inside of the gas collecting cylinder 801, and a guide rod 804 is symmetrically arranged on one side of the piston plate 803. When the gas at one end of the gas collecting cylinder 801 increases, the piston plate 803 will be pushed under the action of the air pressure, so that the gas can be expanded. The volume formed between the large piston plate 803 and the gas collecting cylinder 801, the guide rod 804 is slidably connected to the gas collecting cylinder 801, and the gas collecting cylinder 801 is fixedly connected to the box body 1. The guide rod 804 is used to improve the stability of the piston plate 803 when moving. The gas collecting component 8 also includes a valve body 805 and a connector 806. The valve body 805 is placed at one end of the top of the gas collecting cylinder 801, and the top of the valve body 805 is connected to the connector 806. When sampling, after connecting the pipeline to the connector 806, open the valve body 805 and push the guide rod 804 to discharge the gas inside the gas collecting cylinder 801, thereby facilitating the collection and analysis of the gas.

[0024] In summary, when using the closed environment experimental device, first Figure 1 , Figure 2 and Figure 3 , before the experiment, the knob 401 is turned to drive the screw sleeve 402 to rotate. At this time, the slider 405 will limit the rotation of the adjustment plate 404 and the screw 403, so the height of the adjustment plate 404 can be controlled by the screw 403, and then the deformation of the spring 408 can be adjusted. The position of the pointer 7 on the scale 6 can also be observed through the transparent plate 5, and the elastic force of the spring 408 is the product of its deformation and elastic coefficient, so as to improve the accuracy of the control. Then, during the experiment, as the air pressure inside the box 1 increases, , the gas will squeeze the sealing plug 407 through the exhaust hole 2, and the airflow will pass through the fixed box 3 and flow into the gas collecting cylinder 801, and when the gas increases, it will push the piston plate 803 under the action of the air pressure, and at the same time, the guide rod 804 is used to improve the stability of the piston plate 803 when it moves, so that the exhausted gas can be collected. Finally, when sampling, after connecting the pipeline to the joint 806, open the valve body 805 and push the guide rod 804, the gas inside the gas collecting cylinder 801 can be discharged, thereby facilitating the collection and analysis of the gas.

[0025] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A closed environment experimental device, comprising a box (1) and an adjustment component (4), characterized in that: The top center of the box body (1) is provided with an exhaust hole (2), and a fixed box (3) is arranged in the middle of the top surface of the box body (1). The top of the fixed box (3) is connected to an adjustment component (4), and the adjustment component (4) includes a knob (401), a screw sleeve (402), a screw rod (403), an adjustment plate (404), a slider (405), a slide rod (406), a sealing plug (407) and a spring (408). The bottom of the knob (401) is connected to a A screw sleeve (402) is connected, and the internal thread of the screw sleeve (402) is connected to a screw rod (403), an adjustment plate (404) is arranged at the bottom of the screw rod (403), and sliders (405) are fixed on both sides of the adjustment plate (404), the interior of the adjustment plate (404) is slidably connected to a slide rod (406), and a sealing plug (407) is fixed at the bottom of the slide rod (406), and a spring (408) is arranged at the top outer end of the sealing plug (407).

2. A closed environment experimental device according to claim 1, characterized in that: The sliding block (405) is slidably connected to the fixed box (3), and the fixed box (3) is rotationally connected to the screw sleeve (402).

3. A closed environment experimental device according to claim 1, characterized in that: The screw rod (403) is hollow, and the inner diameter of the screw sleeve (402) is substantially the same as the diameter of the sliding rod (406).

4. A closed environment experimental device according to claim 1, characterized in that: A transparent plate (5) is arranged on one side of the fixed box (3), and a scale (6) is arranged on one side of the transparent plate (5). A pointer (7) is slidably connected to the other side of the transparent plate (5), and the pointer (7) is fixedly connected to the adjustment plate (404).

5. A closed environment experimental device according to claim 4, characterized in that: One end of the fixed box (3) is connected to a gas collecting assembly (8), the gas collecting assembly (8) comprises a gas collecting cylinder (801) and a through hole (802), one end of the fixed box (3) is connected to the gas collecting cylinder (801), and one side of the gas collecting cylinder (801) is provided with a through hole (802).

6. A closed environment experimental device according to claim 5, characterized in that: The gas collecting assembly (8) further comprises a piston plate (803) and a guide rod (804); the piston plate (803) is slidably connected inside the gas collecting cylinder (801), and the guide rod (804) is symmetrically arranged on one side of the piston plate (803).

7. A closed environment experimental device according to claim 6, characterized in that: The guide rod (804) is slidably connected to the gas collecting cylinder (801), and the gas collecting cylinder (801) is fixedly connected to the box body (1).

8. A closed environment experimental device according to claim 6, characterized in that: The gas collecting assembly (8) further comprises a valve body (805) and a joint (806); the valve body (805) is arranged at one end of the top of the gas collecting cylinder (801), and the top of the valve body (805) is connected to the joint (806).

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