Gas replacement device

Abstract

The utility model relates to the technical field of chemical experiment equipment, in particular to a gas replacement device which comprises a three-way valve, a temporary storage container and a needle head, the temporary storage container is detachably connected to one end of the three-way valve, and the needle head is arranged at one end of the three-way valve. The three-way valve is provided with a connecting assembly connected with the needle head in a sealed mode. The chemical experiment device has the effect of improving the efficiency of simple chemical experiments.

Description

Technical Field

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

[0002] Inert gases are needed during chemical experiments. The main reasons include eliminating air interference, preventing oxidation, providing airflow, and maintaining chemical balance. In order to facilitate the supply of inert gases, sample bottles are needed as carriers, and a gas replacement device is needed to fill the sample bottles with inert gases.

[0003] Commonly used gas replacement devices use a three-way valve as a channel for transmitting gas and a blower as a power means to fill the sample bottle with inert gas through the gas pipeline, while simultaneously discharging the original gas in the sample bottle to achieve the effect of gas replacement in the sample bottle.

[0004] However, chemical experiments are diverse and complex, and the amount of inert gas required each time is different. Therefore, the volume of the sample bottles is also different, so the diameter of the gas pipeline also needs to be replaced accordingly. In some simple chemical experiments, such operations increase the steps of the simple chemical experiments, consume more preparation time for the chemical experiments, and reduce the efficiency of the simple chemical experiments. Utility Model Content

[0005] In order to improve the efficiency of simple chemical experiments, the present application provides a gas replacement device.

[0006] The gas replacement device provided in this application adopts the following technical solution:

[0007] A gas replacement device includes a three-way valve, a temporary storage container and a needle. The temporary storage container is detachably connected to one end of the three-way valve. The needle is arranged at one end of the three-way valve. The three-way valve is provided with a connecting assembly that is sealed with the needle.

[0008] By adopting the above technical solution, when inflating, the remaining end of the three-way valve is connected to the inflation device, so that the temporary storage container is filled with gas; when replacing the gas inside the sample bottle, the remaining end of the three-way valve is connected to the external air, connecting the temporary storage container and the sample bottle. During this process, the internal gas of the temporary storage container enters the sample bottle through the needle, and the original gas inside the sample bottle is discharged into the three-way valve through gas compression. The sample bottle is then connected to the external air, so that the gas in the three-way valve is discharged to the outside. The above method is repeated multiple times to discharge the original gas inside the sample bottle, thereby achieving the effect of gas replacement in the sample bottle. The temporary container is inflated to increase the pressure inside the temporary container. When the sample bottle is connected, due to the pressure, the gas enters the sample bottle and squeezes the original gas. The original gas enters the three-way valve, and the three-way valve is pressurized until the original gas is discharged, so as to achieve the effect of gas replacement inside the sample bottle. In this process, the needle is used as a gas transmission means, which can be applied to the gas replacement inside sample bottles of different sizes, and the operation is simple and fast. Compared with the existing technology, in simple chemical experiments, the preparation steps of the chemical experiment are reduced, the preparation time of the chemical experiment is shortened, and the efficiency of the simple chemical experiment is improved.

[0009] Optionally, the connecting assembly includes a sealing film, which wraps the three-way valve and the needle, and the adhesive surface of the sealing film is in contact with the three-way valve and the needle.

[0010] By adopting the above technical solution, the sealing film has good sealing performance. By wrapping the three-way valve and the needle with the sealing film, the sealing between the three-way valve and the needle can be ensured, and the operation steps are simple and quick.

[0011] Optionally, the connecting assembly includes a first connector, a second connector and a connecting tube, the first connector is threadedly engaged with one end of the three-way valve, the second connector is provided with a clamping assembly for limiting the needle, and the connecting tube is connected between the first connector and the second connector.

[0012] By adopting the above technical solution, the first connector is threadedly matched with the three-way valve, the second connector is connected to the needle through a clamping assembly, and the connecting tube is used as the gas transmission channel, which can cope with the ventilation of sample bottles at multiple angles and provide convenience for the ventilation of sample bottles.

[0013] Optionally, the clamping assembly includes a claw, a torsion spring, a limiting ring and a clamping ring, and several claws are provided. One end of the claw is connected to a connecting shaft, and the claw is rotatably connected to the three-way valve through the connecting shaft. The torsion spring is sleeved on the connecting shaft and connected between the claw and the second connecting head. The other end of the claw is connected to a clamping block, the limiting ring is connected to the inner wall of the needle, and the clamping ring is connected to the surface of the needle. When connected, the second connecting head is inserted into the needle and contacts the limiting ring, and the claw is clamped and engaged with the clamping ring through the clamping block.

[0014] By adopting the above technical solution, when limiting the needle, the second connector is inserted into the needle and contacts the limiting ring, and then the claw is rotated to make the clamping block engage with the clamping ring, thereby limiting the freedom of the needle and achieving the effect of limiting the needle.

[0015] Optionally, the temporary storage container is a balloon, the inflation end of the temporary storage container is sleeved on one end of the three-way valve, and the three-way valve is provided with a limiting component for limiting the temporary storage container.

[0016] By adopting this technical solution, a balloon can be used as a temporary storage container to store gas through its deformation. The balloon's material can then act to transport the gas into the sample bottle, achieving a gas replacement effect. Balloons are inexpensive and easy to install, replacing electric air supply equipment and reducing the cost of simple chemical experiments.

[0017] Optionally, the limiting component includes a rubber band, and one end of the three-way valve is provided with a plurality of placement ring grooves. The rubber band is sleeved on the inflation end of the temporary storage container and is located in the placement ring grooves.

[0018] By adopting the above technical solution, when restricting the temporary storage container, the rubber band is wrapped around the inflation end of the temporary storage container to block the gap between the temporary storage container and the three-way valve, thereby achieving the effect of installing and sealing the temporary storage container.

[0019] Optionally, the limiting assembly includes a fixed clamp, a rotating clamp, a connecting screw and a locking nut. One end of the rotating clamp is rotatably connected to one end of the fixed clamp, and one end of the connecting screw is connected to the other end of the rotating clamp. An avoidance groove is provided at the position of the other end of the fixed clamp corresponding to the connecting screw. The locking nut is threadedly engaged with the connecting screw and pressed against the other end of the fixed clamp. When limiting the temporary storage container, the fixed clamp and the rotating clamp wrap the inflated end of the temporary storage container.

[0020] By adopting the above technical solution, when restricting the temporary storage container, the fixed clip and the rotating clip are wrapped around the inflation end of the temporary storage container, and then the locking nut is rotated to tighten the fixed clip, thereby applying pressure to the inflation end of the temporary storage container, thereby achieving the effect of installing the temporary storage container.

[0021] Optionally, an extension tube is connected to one end of the three-way valve corresponding to the temporary storage container, and a pressure gauge is installed on the extension tube.

[0022] By adopting the above technical solution, when the temporary storage container is inflated and the gas volume exceeds a specified value, the temporary storage container will explode. By installing a pressure gauge to detect the gas pressure inside the temporary storage container, gas supply is stopped when the pressure reaches a specified value, thus reducing the possibility of temporary storage container explosion.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When inflating, the remaining end of the three-way valve is connected to the inflation device to fill the temporary storage container with gas; when replacing the gas inside the sample bottle, the remaining end of the three-way valve is connected to the outside air, connecting the temporary storage container and the sample bottle. During this process, the gas inside the temporary storage container enters the sample bottle through the needle, and the original gas inside the sample bottle is discharged into the three-way valve through gas compression. Then the sample bottle is connected to the outside air to discharge the gas inside the three-way valve to the outside. The above method is repeated several times to discharge the original gas inside the sample bottle, achieving the effect of gas replacement in the sample bottle. The temporary container is inflated to increase the pressure inside the temporary container. When the sample bottle is connected, the gas enters the sample bottle due to the pressure and squeezes the original gas. The original gas enters the three-way valve, increasing the pressure inside the three-way valve until the original gas is discharged, thereby achieving the effect of gas replacement inside the sample bottle. In this process, a needle is used as a gas transmission means, which can be applied to gas replacement inside sample bottles of different sizes. The operation is simple and fast. Compared with the existing technology, in simple chemical experiments, the preparation steps of the chemical experiment are reduced, the preparation time of the chemical experiment is shortened, and the efficiency of the simple chemical experiment is improved.

[0025] 2. When restricting the needle, insert the second connector into the needle and make it contact the restriction ring. Then rotate the claw to make the clamping block engage with the clamping ring, thereby limiting the freedom of the needle and achieving the effect of restricting the needle.

[0026] 3. When restricting the temporary storage container, wrap the fixed clamp and the rotating clamp around the inflation end of the temporary storage container, then rotate the locking nut to tighten the fixed clamp, thereby applying pressure to the inflation end of the temporary storage container to achieve the effect of installing the temporary storage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the gas replacement device in Example 1 of the present application.

[0028] Figure 2 It is an exploded view used to reflect the structure of the restriction component in Example 1 of the present application.

[0029] Figure 3 It is an exploded diagram used to illustrate the structure of the connection component in Example 1 of the present application.

[0030] Figure 4 It is an exploded view of the restriction component structure in Example 2 of the present application.

[0031] Figure 5 It is an exploded diagram used to illustrate the structure of the connection component in Example 3 of the present application.

[0032] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0033] Figure 7 It is a cross-sectional view used to illustrate the structure of the snap-fit ​​assembly in Example 3 of the present application.

[0034] Explanation of the accompanying symbols: 1. Three-way valve; 11. Placement ring groove; 12. Pressure gauge; 2. Temporary storage container; 3. Needle; 4. Limiting assembly; 41. Rubber band; 42. Fixed clamp; 43. Rotating clamp; 44. Connecting screw; 45. Locking nut; 5. Connecting assembly; 51. Sealing film; 52. First connecting head; 53. Second connecting head; 54. Connecting tube; 6. Clamping assembly; 61. Claw; 62. Torsion spring; 63. Limiting ring; 64. Clamping ring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 7 This application is described in further detail.

[0036] Example 1 of the present application discloses a gas replacement device. Figure 1 and Figure 2 The gas displacement device includes a three-way valve 1, a temporary storage container 2, and a needle 3. The temporary storage container 2 is a balloon, and the inflatable end of the temporary storage container 2 is sleeved on one end of the three-way valve 1. A limiting component 4 is provided at one end of the three-way valve 1, and the limiting component 4 includes a rubber band 41. A plurality of placement ring grooves 11 are opened at one end of the three-way valve 1. In this embodiment, two are used as an example. The rubber band 41 wraps around the inflatable end of the temporary storage container 2 and is located in the placement ring groove 11. The temporary storage container 2 is restricted and sealed by the rubber band 41, which is simple and quick to operate.

[0037] Reference Figure 1 and Figure 3The needle 3 is disposed at the bottom end of the three-way valve 1. A connecting assembly 5 is provided on the three-way valve 1. The connecting assembly 5 includes a sealing film 51. The sealing film 51 wraps around the positive end and the bottom end of the three-way valve 1. The adhesive surface of the sealing film 51 fits the three-way valve 1 and the needle 3. The sealing film 51 has good sealing performance, and wrapping the three-way valve 1 and the needle 3 with the sealing film 51 is simple and quick to operate.

[0038] Reference Figure 1 In order to reduce the possibility of explosion of the temporary storage container 2 due to excessive internal gas, an extension pipe is connected to one end of the three-way valve 1 corresponding to the temporary storage container 2, and a pressure gauge 12 is installed on the extension pipe. The pressure gauge 12 is used to detect the internal air pressure of the temporary storage container 2.

[0039] The implementation principle of a gas replacement device in an embodiment of the present application is as follows: when inflating, the remaining end of the three-way valve 1 is connected to the inflation device, so that the interior of the temporary storage container 2 is filled with gas; when replacing the gas inside the sample bottle, the remaining end of the three-way valve 1 is connected to the external air, and the needle 3 is inserted into the sample bottle to connect the temporary storage container 2 and the sample bottle. During this process, the internal gas of the temporary storage container 2 enters the sample bottle through the needle 3, and the original gas inside the sample bottle is discharged into the interior of the three-way valve 1 through gas compression, and then the sample bottle is connected to the external air to discharge the gas inside the three-way valve 1 to the outside. The above method is repeated multiple times to discharge the original gas inside the sample bottle, thereby achieving the effect of gas replacement in the sample bottle.

[0040] The temporary storage container 2 is inflated to increase the pressure inside the temporary storage container 2. When the sample bottle is connected, due to the pressure, the gas enters the sample bottle to squeeze the original gas, and the original gas enters the three-way valve 1, increasing the pressure inside the three-way valve 1 until the original gas is discharged, thereby achieving the effect of gas replacement inside the sample bottle. In this process, the needle 3 is used as a gas transmission means, which can be applicable to gas replacement inside sample bottles of different sizes, and the operation is simple and fast. Compared with the existing technology, in simple chemical experiments, the preparation steps of the chemical experiment are reduced, the preparation time of the chemical experiment is shortened, and the efficiency of the simple chemical experiment is improved.

[0041] Example 2: The difference between this example and Example 1 lies in the different structure of the limiting component 4 .

[0042] Reference Figure 4The limiting assembly 4 includes a fixed clamp 42, a rotating clamp 43, a connecting screw 44 and a locking nut 45. Both the fixed clamp 42 and the rotating clamp 43 are provided with a wrapped arc groove, and the fixed clamp 42 and the rotating clamp 43 are arranged opposite to each other. One end of the rotating clamp 43 is rotatably connected to one end of the fixed clamp 42, and one end of the rotating clamp 43 is fixedly connected to a toggle rod. The connecting screw 44 is fixedly connected to the other end of the rotating clamp 43, and the other end of the fixed clamp 42 is provided with an avoidance groove at the position corresponding to the connecting screw 44. The locking nut 45 is threadedly fitted on the connecting screw 44 and pressed against the other end of the fixed clamp 42.

[0043] When restricting the temporary storage container 2, the fixed clamp 42 and the rotating clamp 43 are used to wrap the inflation end of the temporary storage container 2, and then the locking nut 45 is rotated to make the locking nut 45 press against the other end of the fixed clamp 42, so that the rotating clamp 43 and the fixed clamp 42 apply pressure to the inflation end of the temporary storage container 2, thereby restricting the freedom of the temporary storage container 2 and realizing the installation of the temporary storage container 2.

[0044] Example 3: The difference between this example and Example 1 lies in the different structure of the connecting component 5 .

[0045] Reference Figure 5 The connecting assembly 5 includes a first connector 52, a second connector 53 and a connecting pipe 54. The first connector 52 is threadedly fitted on the bottom end of the three-way valve 1, and the connecting pipe 54 is installed between the first connector 52 and the second connector 53.

[0046] Reference Figure 5 、 Figure 6 and Figure 7 The second connector 53 is provided with a clamping assembly 6, which includes a claw 61, a torsion spring 62, a limiting ring 63, and a clamping ring 64. A plurality of claws 61 are provided, one end of which is fixedly connected to a connecting shaft, through which the claw 61 is rotatably connected to the second connector 53, and the other end of the claw 61 is fixedly connected to a clamping block. The torsion spring 62 is sleeved on the connecting shaft and fixedly connected between the connecting shaft and the second connector 53. The limiting ring 63 is fixedly connected to the inner wall of the needle 3, and the clamping ring 64 is fixedly connected to the surface of the needle 3.

[0047] When installing the needle 3, the first connector 52 is threadedly engaged with the bottom end of the three-way valve 1, and the second connector 53 is inserted into the needle 3. Then, the claw 61 is rotated until the second connector 53 is pressed against the limiting ring 63. At this time, the claw 61 is released, and the claw 61 is rotated by the force of the torsion spring 62, so that the clamping block and the clamping ring 64 are engaged with each other, thereby realizing the installation of the needle 3.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A gas replacement device, characterized in that: The invention comprises a three-way valve (1), a temporary storage container (2) and a needle (3), wherein the temporary storage container (2) is detachably connected to one end of the three-way valve (1), the needle (3) is arranged at one end of the three-way valve (1), and the three-way valve (1) is provided with a connecting component (5) which is sealedly connected to the needle (3).

2. The gas replacement device according to claim 1, characterized in that: The connecting assembly (5) comprises a sealing film (51), the sealing film (51) wraps the three-way valve (1) and the needle (3), and the adhesive surface of the sealing film (51) is in contact with the three-way valve (1) and the needle (3).

3. The gas replacement device according to claim 1, characterized in that: The connecting assembly (5) comprises a first connecting head (52), a second connecting head (53) and a connecting pipe (54); the first connecting head (52) is threadedly engaged with one end of the three-way valve (1); the second connecting head (53) is provided with a clamping assembly (6) for restricting the needle (3); and the connecting pipe (54) is connected between the first connecting head (52) and the second connecting head (53).

4. The gas replacement device according to claim 3, characterized in that: The clamping assembly (6) includes a claw (61), a torsion spring (62), a limiting ring (63) and a clamping ring (64). A plurality of claws (61) are provided. One end of the claw (61) is connected to a connecting shaft. The claw (61) is rotatably connected to the three-way valve (1) through the connecting shaft. The torsion spring (62) is sleeved on the connecting shaft and connected between the claw (61) and the second connector (53). The other end of the claw (61) is connected to a clamping block. The limiting ring (63) is connected to the inner wall of the needle (3). The clamping ring (64) is connected to the surface of the needle (3). When connected, the second connector (53) is inserted into the needle (3) and contacts the limiting ring (63). The claw (61) is clamped and matched with the clamping ring (64) through the clamping block.

5. The gas replacement device according to claim 1, characterized in that: The temporary storage container (2) is a balloon, the inflation end of the temporary storage container (2) is sleeved on one end of the three-way valve (1), and the three-way valve (1) is provided with a limiting component (4) for limiting the temporary storage container (2).

6. The gas replacement device according to claim 5, characterized in that: The limiting component (4) includes a rubber band (41), one end of the three-way valve (1) is provided with a plurality of placement ring grooves (11), and the rubber band (41) is sleeved on the inflation end of the temporary storage container (2) and is located in the placement ring grooves (11).

7. The gas replacement device according to claim 5, characterized in that: The limiting assembly (4) comprises a fixed clamp (42), a rotating clamp (43), a connecting screw (44) and a locking nut (45); one end of the rotating clamp (43) is rotatably connected to one end of the fixed clamp (42); one end of the connecting screw (44) is connected to the other end of the rotating clamp (43); an avoidance groove is provided at the position of the other end of the fixed clamp (42) corresponding to the connecting screw (44); the locking nut (45) is threadedly engaged with the connecting screw (44) and pressed against the other end of the fixed clamp (42); when limiting the temporary storage container (2), the fixed clamp (42) and the rotating clamp (43) wrap the inflatable end of the temporary storage container (2).

8. The gas replacement device according to claim 5, characterized in that: An extension pipe is connected to one end of the three-way valve (1) corresponding to the temporary storage container (2), and a pressure gauge (12) is installed on the extension pipe.

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