A laboratory gas path regulation device

Abstract

The utility model provides a laboratory gas path regulation and control device, including hollow tube, both ends of hollow tube are connected with the connecting ring through the positioning member rotation, the connecting ring one side surface evenly is equipped with a plurality of round hole for the bolt of wear and tear, the valve is installed in the hollow tube outer surface, the valve is connected with the gas hose away from one end of hollow tube, and the supporting barrel is arranged concentrically with hollow tube, and the supporting barrel is connected with hollow tube through the connecting piece, and the helical groove is processed on the annular side surface of supporting barrel, and the gas hose is stored in the helical groove spirally, the utility model has the beneficial effect as follows: avoid the acute angle bending or dead bend of gas hose, guarantee the smoothness of gas hose internal gas flow passage, effectively prevent the situation that gas delivery resistance increases, flow is not stable, improve the gas precision of precision experiment.

Description

Technical Field

[0001] This utility model is a laboratory gas path control device, belonging to the field of experimental facilities. Background Technology

[0002] In laboratory gas control systems, the combination of gas pipelines and valves is the core node for controlling gas flow, while the gas supply hose plays a crucial role in connecting the valves and the gas-using terminals. Researchers can control gas delivery by opening and closing valves, adapting to the gas requirements of different experimental scenarios and ensuring the orderly conduct of experimental procedures. Since the layout of various laboratory benches and instruments often needs to be adjusted according to experimental projects, the placement of gas-using terminals (such as the inlets of precision instruments like chromatographs and mass spectrometers) also needs to be changed accordingly. To meet this need for flexible adjustment, the gas supply hose between the valve and the gas-using terminal must have sufficient redundancy to avoid limiting the movement of the terminal equipment due to insufficient hose length, ensuring convenient experimental operation.

[0003] In practice, these redundant gas supply hoses, lacking dedicated support and constraint structures, are prone to haphazard stacking, drooping, and bending. Limited laboratory bench space often results in hoses being squeezed between instruments or bent and stacked in corners, with some hoses forming sharp bends or even dead bends. This excessive bending directly alters the gas flow path within the hose, increasing gas delivery resistance, causing unstable flow rates, and affecting the accuracy of gas supply in precision experiments. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a laboratory gas path regulation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a laboratory gas path control device, comprising: A hollow tube with connecting rings rotatably connected to both ends by positioning components. Each connecting ring has multiple round holes evenly distributed on one side for inserting bolts. A valve is installed on the outer surface of the hollow tube, and a gas supply hose is connected to the end of the valve away from the hollow tube. A support cylinder is arranged concentrically with the hollow tube. The support cylinder is connected to the hollow tube through a connector. A spiral groove is machined on the annular side of the support cylinder, and the air supply hose is stored in the spiral groove in a spiral shape.

[0006] Furthermore, the positioning component includes a circular cover, and two circular covers are fitted on the hollow tube. The side of the circular cover facing the connecting ring is open. The circular cover is connected to the connecting ring. Both ends of the hollow tube are connected and fixed with rings. The rings are slidably installed in the space formed by the circular cover and the connecting ring. The side of the circular cover away from the connecting ring is connected with a plurality of positioning screws in annular equidistant threads to limit the relative position of the circular cover and the rings.

[0007] Furthermore, a sealing gasket is provided on one side of the ring, and the sealing gasket is in contact with the connecting ring.

[0008] Furthermore, the side of the dome facing away from the connecting ring has multiple threaded holes at equal intervals in an annular shape, and the positioning screw is threaded into the threaded hole, with one end of the positioning screw in contact with the ring.

[0009] Furthermore, multiple support arms are installed equidistantly on the annular side of the hood. The support arms are arranged along the radial direction of the hood. The end of the support arm away from the hood has a through hole that matches the circular hole. The channel formed by the circular hole and the through hole is used to insert bolts for connecting the connecting ring and the flange on the end of the gas pipeline.

[0010] Furthermore, the connector includes an inner tube, and the support cylinder has an inner tube arranged concentrically with the support cylinder. The inner tube is sleeved on the hollow tube and connected and fixed to the hollow tube. Multiple connecting rods are installed in a ring at equal intervals between the inner tube and the support cylinder.

[0011] Furthermore, an internal threaded sleeve is installed on the outer surface of the hollow tube, the internal threaded sleeve is connected to the hollow tube, the internal threaded sleeve is inclined toward the support cylinder, and one end of the valve is threaded into the internal threaded sleeve.

[0012] Furthermore, the end of the valve away from the internal threaded sleeve is threadedly connected to a connector, and the end of the connector away from the valve is connected to the air supply hose via a clamp.

[0013] The beneficial effects of this utility model are: A hollow tube is installed between two gas supply pipe sections. The annular side of the support cylinder is machined with a spiral groove. The gas supply hose is connected to the valve and can be spirally stored in the spiral groove. When the hollow tube is rotated, the support cylinder rotates as well, thereby changing the length of the gas supply hose stored in the spiral groove. This design solves the problem of redundant parts of the traditional gas supply hose being randomly stacked and bent, avoids sharp angle bends or dead bends in the gas supply hose, ensures the smoothness of the gas flow channel inside the gas supply hose, effectively prevents the increase of gas delivery resistance and unstable flow, and improves the gas accuracy of precision experiments. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a laboratory gas path control device according to the present invention; Figure 2 This is a perspective view of a laboratory gas path control device according to the present invention. Figure 3 This is a cross-sectional view of the support cylinder in a laboratory gas path control device according to the present invention. Figure 4 This is an exploded structural diagram of the connecting ring, the circular cover, and the hollow tube of a laboratory gas path control device according to this utility model. In the picture: 1. Hollow tube; 11. Internal threaded sleeve; 12. Ring; 2. Connecting ring; 21. Round hole; 3. Round cover; 31. Support arm; 32. Through hole; 33. Threaded hole; 34. Positioning screw; 4. Valves; 41. Connecting joints; 42. Gas supply hoses; 5. Support cylinder; 51. Inner tube; 52. Connecting rod; 53. Spiral groove; 6. Sealing gaskets. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides a technical solution: a laboratory gas circuit control device, including a hollow tube 1, a connecting ring 2 with a plurality of circular holes 21 evenly opened on one side for inserting bolts, two circular covers 3 fitted on the hollow tube 1, the side of the circular cover 3 facing the connecting ring 2 being open, a plurality of support arms 31 being installed in a ring at equal intervals on the annular side of the circular cover 3, the support arms 31 being arranged along the radial direction of the circular cover 3, and the end of the support arm 31 away from the circular cover 3 having a through hole 32 that matches the circular hole 21. After inserting bolts connecting the connecting ring 2 and the flange on the end of the gas delivery pipe into the channel formed by the circular hole 21 and the through hole 32, the relative positions of the circular cover 3, the hollow tube 1 and the gas delivery pipe are simultaneously restricted by the bolts, at which time the circular cover 3 is connected to the connecting ring 2.

[0017] See Figure 4Both ends of the hollow tube 1 are connected and fixed with rings 12. The rings 12 are slidably installed in the space formed by the dome 3 and the connecting ring 2. A sealing gasket 6 is provided on one side of the ring 12. The sealing gasket 6 fits in close contact with the connecting ring 2. Multiple threaded holes 33 are opened in a ring shape at equal intervals on the side of the dome 3 away from the connecting ring 2. The internal threads are connected to positioning screws 34 for limiting the relative position of the dome 3 and the rings 12. One end of the positioning screws 34 contacts the rings 12. The sealing gaskets 6 improve the sealing between the dome 3 and the rings 12 and the connecting ring 2 to prevent air leakage. When the hollow tube 1 is rotated, the hollow tube 1 drives the rings 12 to rotate in the dome 3, which makes it easy to adjust the length of the air supply hose 42 stored in the spiral groove 53 as needed.

[0018] See Figures 1-4 A threaded sleeve 11 is installed on the outer surface of the hollow tube 1, and the threaded sleeve 11 communicates with the hollow tube 1. The threaded sleeve 11 is inclined towards the support cylinder 5. One end of the valve 4 is threaded into the threaded sleeve 11, and the end of the valve 4 away from the threaded sleeve 11 is threaded into a connector 41. The end of the connector 41 away from the valve 4 is connected to the air supply hose 42 by a clamp. The support cylinder 5 is arranged concentrically with the hollow tube 1. The support cylinder 5 has an inner tube 51 arranged concentrically with the support cylinder 5. The inner tube 51 is sleeved on the hollow tube 1 and connected and fixed to the hollow tube 1. Multiple connecting rods 52 are installed equidistantly in a ring between the inner tube 51 and the support cylinder 5. A spiral groove 53 is machined on the annular side of the support cylinder 5. The air supply hose 42 is... The hollow tube 1 is installed between two gas supply pipes and is spirally stored in the spiral groove 53. The support cylinder 5 has a spiral groove 53 machined on its annular side. The gas supply hose 42 is connected to the valve 4 and can be spirally stored in the spiral groove 53. When the hollow tube 1 is rotated, the support cylinder 5 rotates as well, thereby changing the length of the gas supply hose 42 stored in the spiral groove 53. This design solves the problem of redundant parts of the traditional gas supply hose 42 being randomly stacked and bent, avoids the gas supply hose 42 forming sharp angle bends or dead bends, ensures the smoothness of the gas flow channel inside the gas supply hose 42, effectively prevents the increase of gas delivery resistance and unstable flow, and improves the gas accuracy of precision experiments.

[0019] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laboratory gas path control device, characterized in that, include: Hollow tube (1), both ends are rotatably connected to connecting rings (2) through positioning parts, and one side of the connecting ring (2) is evenly provided with multiple round holes (21) for inserting bolts. A valve (4) is installed on the outer surface of the hollow tube (1), and a gas supply hose (42) is connected to the end of the valve (4) away from the hollow tube (1). The support cylinder (5) is arranged concentrically with the hollow tube (1). The support cylinder (5) is connected to the hollow tube (1) through a connector. The support cylinder (5) has a spiral groove (53) machined on its annular side. The air supply hose (42) is stored in the spiral groove (53) in a spiral shape.

2. The laboratory gas path control device according to claim 1, characterized in that: The positioning component includes a dome (3). Two domes (3) are fitted on the hollow tube (1). The dome (3) facing the connecting ring (2) is open. The dome (3) is connected to the connecting ring (2). Both ends of the hollow tube (1) are connected and fixed with rings (12). The rings (12) are slidably installed in the space formed by the dome (3) and the connecting ring (2). The dome (3) facing away from the connecting ring (2) is connected with a plurality of positioning screws (34) for limiting the relative position of the dome (3) and the rings (12) by annular equidistant threads.

3. The laboratory gas path control device according to claim 2, characterized in that: A sealing gasket (6) is provided on one side of the ring (12), and the sealing gasket (6) is in contact with the connecting ring (2).

4. A laboratory gas path control device according to claim 3, characterized in that: The circular cover (3) has multiple threaded holes (33) equidistantly spaced on the side opposite to the connecting ring (2). The positioning screw (34) is threaded into the threaded hole (33), and one end of the positioning screw (34) is in contact with the ring (12).

5. A laboratory gas path control device according to claim 4, characterized in that: The circular cover (3) has multiple support arms (31) installed in a ring at equal intervals on its annular side. The support arms (31) are arranged along the radial direction of the circular cover (3). The end of the support arm (31) away from the circular cover (3) has a through hole (32) that matches the circular hole (21). The channel formed by the circular hole (21) and the through hole (32) is used to insert bolts for connecting the connecting ring (2) and the flange on the end of the gas pipeline.

6. A laboratory gas path control device according to claim 1, characterized in that: The connector includes an inner tube (51). The inner tube (51) is arranged concentrically with the support cylinder (5) inside the support cylinder (5). The inner tube (51) is sleeved on the hollow tube (1) and connected and fixed to the hollow tube (1). Multiple connecting rods (52) are installed in a ring at equal intervals between the inner tube (51) and the support cylinder (5).

7. A laboratory gas path control device according to claim 1, characterized in that: The hollow tube (1) is fitted with an internal threaded sleeve (11) on its outer surface. The internal threaded sleeve (11) is connected to the hollow tube (1). The internal threaded sleeve (11) is inclined toward the support cylinder (5). One end of the valve (4) is threaded into the internal threaded sleeve (11).

8. A laboratory gas path control device according to claim 7, characterized in that: The valve (4) is threaded to a connector (41) at the end away from the inner threaded sleeve (11), and the end of the connector (41) away from the valve (4) is connected to the air supply hose (42) by a clamp.

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