Experimental air extractor convenient to move
By designing an exhaust device with multiple sections of exhaust pipes and joint tightening knobs, the problem of limited rotation range of the exhaust pipe is solved, flexible rotation and airtightness of the exhaust pipe are achieved, experimental operations are simplified, and experimental convenience and safety are improved.
Patent Information
- Application Number
- CN202422661932.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing exhaust pipe has a limited rotation range, which makes the experimental operation cumbersome and difficult to move flexibly, limiting the convenience of the experiment.
An exhaust device including a multi-section exhaust pipe and a joint tightening knob is designed. The tightness of the exhaust pipe is adjusted by the joint tightening knob. Combined with the locking component and the extension pipe, the flexible rotation and airtightness of the exhaust pipe can be achieved to prevent gas leakage.
The flexible rotation of the exhaust pipe is realized, the rotation range is increased, the experimental operation is simplified, gas leakage is avoided, and the convenience and safety of the experiment are improved.
Smart Images
Figure CN223405609U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of experimental facilities, in particular to an air extraction device which is easy to move for experiments. Background Art
[0002] Experimental exhaust devices are widely used in laboratories. They are mainly used to remove air or other gases from closed containers to create a low-pressure environment. The gas hood is connected to the closed container, and the exhaust fan is turned on to allow the gas to be transported outward through the exhaust pipe. When the position of the gas hood is changed, the exhaust pipe needs to be rotated. However, the rotation range of the existing exhaust pipe is limited, and it is not easy to move flexibly according to actual needs, making the experimental operation cumbersome and limiting its use.
[0003] In view of the above problems, a kind of experimental and portable air extraction device is now developed. Utility Model Content
[0004] In order to overcome the disadvantages that the exhaust pipe needs to be rotated when the position of the gas collecting hood is changed, but the existing exhaust pipe has a limited rotation range and is not easy to move flexibly according to actual needs, making the experimental operation cumbersome and the use limited, the utility model provides an exhaust device that is easy to move for experiments.
[0005] The technical solution of the utility model is: an air extraction device that is easy to move for experiments, including a first exhaust pipe, the lower part of the first exhaust pipe is rotatably connected to the second exhaust pipe, the right part of the second exhaust pipe is slidably connected to the extension pipe, the interior of the second exhaust pipe is connected to a bellows, the left part of the extension pipe is provided with a groove, the right part of the second exhaust pipe is rotatably connected to the third exhaust pipe, the lower part of the third exhaust pipe is rotatably connected to the fourth exhaust pipe, the lower end of the first exhaust pipe, the left and right ends of the second exhaust pipe, the upper and lower ends of the third exhaust pipe and the upper part of the fourth exhaust pipe are all rotatably connected Joint tightening knob, an air valve regulator is installed at the lower part of the fourth exhaust pipe, the lower side of the fourth exhaust pipe is rotatably connected to an arched air collecting hood, a locking assembly is installed on the second exhaust pipe, the locking assembly includes a first mounting part, the first mounting part is installed on the right side of the second exhaust pipe, the second mounting part is installed on the first mounting part, the first mounting part and the second mounting part enclose the right side of the second exhaust pipe, a clamping plate is rotatably connected to the first mounting part, and torsion springs are connected between the upper and lower sides of the clamping plate and the first mounting part, and an extension plate is movably connected to the arched air collecting hood.
[0006] Preferably, there are several grooves.
[0007] Preferably, the joint tightening knob is provided with anti-slip grooves.
[0008] Preferably, both the first mounting member and the second mounting member are detachable connection structures.
[0009] Preferably, the clamping plate can be clamped with the groove.
[0010] Preferably, a handle is provided on the card board.
[0011] By adopting the above technical solution, the beneficial effects of the utility model are:
[0012] The utility model is provided with an extension pipe to extend the length of the second exhaust pipe, thereby increasing the rotation range of each exhaust pipe to meet the demand for a larger rotation of the exhaust pipe, thereby avoiding frequent movement of the position of the arched gas collecting hood, making the experimental exhaust operation more convenient, and at the same time providing a locking assembly to prevent the second exhaust pipe from leaking due to gaps during the extension process. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0014] Figure 2 This is a schematic diagram of a first partial cross-sectional three-dimensional structure of the utility model.
[0015] Figure 3 It is a partial three-dimensional structural diagram of the utility model.
[0016] Figure 4 This is a schematic diagram of a second partial cross-sectional three-dimensional structure of the present invention.
[0017] Explanation of the accompanying drawings: 1_first exhaust pipe, 2_second exhaust pipe, 21_extension pipe, 22_bellows, 23_groove, 3_third exhaust pipe, 4_fourth exhaust pipe, 5_joint tightening knob, 6_air valve regulator, 7_arched air collecting hood, 8_locking assembly, 81_first mounting part, 82_second mounting part, 83_clamping plate, 84_torsion spring, 9_extension plate. DETAILED DESCRIPTION
[0018] The following description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.
[0019] A portable vacuum device for use in experiments, such as Figure 1-Figure 4As shown, it includes a first exhaust pipe 1, the lower part of the first exhaust pipe 1 is rotatably connected to the second exhaust pipe 2, the right part of the second exhaust pipe 2 is slidably connected to the extension pipe 21, the second exhaust pipe 2 is internally connected to the bellows 22, the left part of the extension pipe 21 is provided with a groove 23, and the groove 23 is provided with a plurality of grooves, the right part of the second exhaust pipe 2 is rotatably connected to the third exhaust pipe 3, and the lower part of the third exhaust pipe 3 is rotatably connected to the fourth exhaust pipe 4, the lower end of the first exhaust pipe 1, the left and right ends of the second exhaust pipe 2, the upper and lower ends of the third exhaust pipe 3 and the upper part of the fourth exhaust pipe 4 are all rotatably connected to the joint tension knob 5, the joint tension knob 5 is provided with anti-slip grooves, the lower part of the fourth exhaust pipe 4 is installed with an air valve regulator 6, the fourth The lower side of the exhaust pipe 4 is rotatably connected to the arched air collecting hood 7, and a locking assembly 8 is installed on the second exhaust pipe 2. The locking assembly 8 includes a first mounting part 81, and the first mounting part 81 is installed on the right side of the second exhaust pipe 2. The second mounting part 82 is installed on the first mounting part 81. The first mounting part 81 and the second mounting part 82 are both detachable connection structures. The first mounting part 81 and the second mounting part 82 enclose the right side of the second exhaust pipe 2. A clamping plate 83 is rotatably connected to the first mounting part 81, and the clamping plate 83 can be clamped with the groove 23. A handle is provided on the clamping plate 83. Torsion springs 84 are connected between the upper and lower sides of the clamping plate 83 and the first mounting part 81, and an extension plate 9 is movably connected to the arched air collecting hood 7.
[0020] It should be noted that experimental exhaust devices are widely used in laboratories, and are mainly used to remove air or other gases in closed containers to create a low-pressure environment. First, according to actual needs, the tightness between the first exhaust pipe 1, the second exhaust pipe 2, the third exhaust pipe 3 and the fourth exhaust pipe 4 is adjusted through the joint tension knob 5, so that each exhaust pipe can be flexibly rotated according to needs, and then the arched gas collecting hood 7 is aligned with the closed container. The gas circulation speed in the arched gas collecting hood 7 can be adjusted by the air valve regulator 6. When the shape of the enclosed space is not fully compatible with the arched gas collecting hood 7, gas leakage may occur. In order to enhance the airtightness of the arched gas collecting hood 7, the extension plate 9 can be used for adaptation and adjustment. When the exhaust hole in the enclosed space enters the interior of the arched gas collecting hood 7 through the extension plate 9, the extension plate 9 can be adjusted according to the airtightness. The closed container flexibly adjusts the extension height so that the extension plate 9 and the arched air collecting hood 7 form a closed environment, and then the exhaust fan is turned on, and the gas is discharged outward after passing through the fourth exhaust pipe 4, the third exhaust pipe 3, the second exhaust pipe 2 and the first exhaust pipe 1. When it is necessary to adjust the rotation angle of each exhaust pipe, the existing angle adjustment range of each exhaust pipe is limited. The second exhaust pipe 2 can be extended to increase the rotation angle range of each exhaust pipe, and the extension pipe 21 is slid outward to increase the overall length of the second exhaust pipe 2. In order to prevent gas leakage due to a gap between the second exhaust pipe 2 and the extension pipe 21, after extending the extension pipe 21 to a suitable length, use the handle on the clamping plate 83 to rotate the clamping plate 83. Under the action of the torsion spring 84, the clamping plate 83 is reset, and the clamping plate 83 is clamped on the groove 23, thereby locking the second exhaust pipe 2 and the extension pipe 21.
[0021] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A portable vacuum device for use in experiments, characterized in that: The invention comprises a first exhaust pipe (1), wherein the lower part of the first exhaust pipe (1) is rotatably connected to the second exhaust pipe (2), the right part of the second exhaust pipe (2) is slidably connected to the extension pipe (21), the interior of the second exhaust pipe (2) is connected to the corrugated pipe (22), the left part of the extension pipe (21) is provided with a groove (23), the right part of the second exhaust pipe (2) is rotatably connected to the third exhaust pipe (3), the lower part of the third exhaust pipe (3) is rotatably connected to the fourth exhaust pipe (4), the lower end of the first exhaust pipe (1), the left and right ends of the second exhaust pipe (2), the upper and lower ends of the third exhaust pipe (3) and the upper part of the fourth exhaust pipe (4) are all rotatably connected to a joint tightening knob (5), and the lower part of the fourth exhaust pipe (4) is equipped with an air lock. The valve regulator (6) is provided. The lower side of the fourth exhaust pipe (4) is rotatably connected to an arched air collecting hood (7). The second exhaust pipe (2) is provided with a locking assembly (8). The locking assembly (8) includes a first mounting member (81). The right side of the second exhaust pipe (2) is provided with the first mounting member (81). The second mounting member (82) is provided on the first mounting member (81). The first mounting member (81) and the second mounting member (82) enclose the right side of the second exhaust pipe (2). The first mounting member (81) is rotatably connected to a clamping plate (83). Torsion springs (84) are connected between the upper and lower sides of the clamping plate (83) and the first mounting member (81). The arched air collecting hood (7) is movably connected to an extension plate (9).
2. The portable vacuum device for experiment according to claim 1, characterized in that: There are a plurality of grooves (23).
3. The portable vacuum device for experiment according to claim 1, characterized in that: The joint tightening knob (5) is provided with anti-slip grooves.
4. The portable vacuum device for experiment according to claim 1, characterized in that: The first mounting member (81) and the second mounting member (82) are both detachable connection structures.
5. The portable vacuum device for experiment according to claim 1, characterized in that: The clamping plate (83) can be clamped with the groove (23).
6. The portable vacuum device for experiment according to claim 1, characterized in that: The clamping plate (83) is provided with a handle.