Laboratory gas supply device

Abstract

The utility model relates to the technical field of gas supply equipment, in particular to a gas supply device for a laboratory. The device comprises a workbench and a dismounting mechanism, the dismounting mechanism comprises a gas tank, the gas tank is located at the top end of the workbench, the output end of the gas tank is in butt joint with a connecting pipe, the output end of the gas tank is provided with a gas outlet pipe, the outer side of the gas outlet pipe is provided with a first fixing ring, and the surface of the side, close to the connecting pipe, of the first fixing ring is provided with a threaded groove; the outer side of the connecting pipe is sleeved with a second fixing ring, a movable groove is formed in the surface of the side, close to the air outlet pipe, of the second fixing ring, a screw is connected to the inner side of the movable groove through a bearing, an outer tooth gear is arranged on the outer side of the screw, and one end of the screw extends to the outer side of the connecting pipe and is in threaded connection to the inner side of the threaded groove. A connecting rotating ring is arranged on the outer side of the inner tooth gear, and the outer circle of the connecting rotating ring penetrates through the second fixing ring and extends to the outer side of the second fixing ring. The disassembly and assembly efficiency of the gas tank can be improved, and meanwhile the connection stability between the gas tank and the connecting pipe is not affected.

Description

Technical Field

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

[0002] A laboratory is a place where experiments are conducted. There are many kinds of experiments that need to be carried out in the laboratory. Different standard gases will be used according to the different experiments. These standard gases will be compressed into canned containers for easier transportation, storage and use, so that they can be used at any time during the experiment.

[0003] After the gas in the gas cylinder is used up, the gas cylinder needs to be replaced. The existing disassembly and assembly means are usually bolt connections with strong stability, and more sets of bolts are used to ensure the tightness of the connection. However, multiple sets of bolts not only require additional tools when disassembling and assembling, but also require a certain amount of time and energy in disassembly and assembly, which will affect the progress of the experiment to a certain extent. For this reason, we propose a laboratory gas supply device. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a laboratory gas supply device. When the gas tank needs to be disassembled, the screw used for stable connection can be rotated at a faster speed, so that the screw can be separated from the components on the gas tank at a faster speed, thereby improving the disassembly and assembly efficiency of the gas tank without affecting the connection stability between the gas tank and the connecting pipe.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: a laboratory gas supply device, comprising a workbench and a disassembly and assembly mechanism, the disassembly and assembly mechanism comprising a gas tank, the gas tank is located at the top of the workbench and is connected to a connecting pipe at the output end, the output end of the gas tank is provided with an air outlet pipe, a first fixed ring is provided on the outside of the air outlet pipe, a threaded groove is provided on the surface of the first fixed ring close to the connecting pipe, a second fixed ring is sleeved on the outside of the connecting pipe, a movable groove is provided on the surface of the second fixed ring close to the air outlet pipe, a screw is connected to a bearing on the inner side of the movable groove, an external gear is provided on the outside of the screw, and one end of the screw extends to the outside of the connecting pipe and is threadedly connected to the inner side of the thread groove, an internal gear is meshedly connected to the outer side of the external gear, a connecting swivel is provided on the outer side of the internal gear, and the outer ring of the connecting swivel passes through the second fixed ring and extends to the outside of the second fixed ring.

[0006] As a preferred technical solution of the utility model, the screw rods are distributed in a ring shape around the outer side of the second fixed ring, and the number of the thread grooves, external gears and screw rods is the same.

[0007] As a preferred technical solution of the utility model, an anti-slip sleeve is sleeved on the outer side of the connecting swivel, and the connecting swivel and the anti-slip sleeve are adhesively connected.

[0008] As a preferred technical solution of the utility model, a limit rotating block is provided on the outer side of the connecting rotating ring, a limit rotating groove is provided on the inner side of the movable groove, and the limit rotating block is slidably connected to the inner side of the limit rotating groove.

[0009] As a preferred technical solution of the utility model, the inner diameter of the connecting pipe is 1.1 times the outer diameter of the air outlet pipe, and a rubber sealing ring is provided at the connection between the connecting pipe and the air outlet pipe.

[0010] As an optimal technical solution of the utility model, it also includes a rotating mechanism, which includes a rotating groove, which is opened in the workbench, and a placement turntable is rotatably connected to the inner side of the rotating groove, a rotating groove is provided on the outer side of the bottom end of the workbench, a connecting groove is provided on the top end face of the rotating groove, a motor is provided on the inner side of the connecting groove, one end of the placement turntable extends to the inner side of the connecting groove and is transmission-connected to the motor, and a gas tank placement groove is provided on the top end face of the placement turntable, the gas tank is inserted into the inner side of the gas tank placement groove, a positioning rotation block is provided on the bottom end face of the placement turntable, a positioning rotation groove is provided on the inner side of the connecting groove, and the positioning rotation block is slidably connected to the inner side of the positioning rotation groove.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] 1. Through the disassembly and assembly mechanism, when the gas tank needs to be disassembled, the screw rod for stable connection can be rotated together at a faster speed, so that the screw rod can be separated from the components on the gas tank at a faster speed, thereby improving the disassembly and assembly efficiency of the gas tank without affecting the connection stability between the gas tank and the connecting pipe;

[0013] 2. Through the rotating mechanism, when any gas tank is used up, the alternative gas tank placed on the turntable can be rotated to the connecting pipe and connected to the connecting pipe, thereby further improving the efficiency of replacing the gas tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0015] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model.

[0016] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0017] Figure 4 For the utility model Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0018] Among them: 1. workbench; 2. turntable; 3. gas tank; 4. connecting pipe; 11. turntable; 12. connecting groove; 13. motor; 14. positioning turntable; 21. gas tank placement groove; 22. positioning turntable; 31. outlet pipe; 32. first fixed ring; 33. threaded groove; 41. second fixed ring; 42. movable groove; 43. screw; 44. external gear; 45. internal gear; 46. connecting turntable; 47. anti-slip sleeve; 48. limit turntable; 49. limit turntable. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified. Example

[0020] like Figure 1-Figure 4As shown, a laboratory gas supply device includes a workbench 1 and a disassembly and assembly mechanism, the disassembly and assembly mechanism includes a gas tank 3, the gas tank 3 is located at the top of the workbench 1 and is connected to a connecting pipe 4 at the output end, an outlet pipe 31 is provided at the output end of the gas tank 3, a first fixed ring 32 is provided on the outside of the outlet pipe 31, a threaded groove 33 is provided on the surface of the first fixed ring 32 close to the connecting pipe 4, a second fixed ring 41 is sleeved on the outside of the connecting pipe 4, a movable groove 42 is provided on the surface of the second fixed ring 41 close to the outlet pipe 31, a screw 43 is connected to the inner bearing of the movable groove 42, and a screw 43 is provided on the outside of the screw 43 There is an external gear 44, and one end of the screw 43 extends to the outside of the connecting tube 4 and is threadedly connected to the inside of the thread groove 33. The outer side of the external gear 44 is meshed with an internal gear 45. The outer side of the internal gear 45 is provided with a connecting swivel 46. The outer circle of the connecting swivel 46 passes through the second fixed ring 41 and extends to the outside of the second fixed ring 41; the screw 43 is distributed in a ring shape around the outside of the second fixed ring 41, and the number of the thread groove 33, the external gear 44 and the screw 43 is the same; the laboratory is a place for experiments. There are many kinds of experiments to be carried out in the laboratory, and according to different experiments, Different standard gases need to be used. In order to facilitate transportation, storage and use, these standard gases will be compressed into canned containers so that they can be used at any time during the experiment. After the gas in the gas cylinder is used up, the gas cylinder needs to be replaced. The existing disassembly and assembly means are usually bolt connections with strong stability, and more sets of bolts are used to ensure the tightness of the connection. However, when disassembling and assembling, multiple sets of bolts not only require additional tools, but also require a certain amount of time and energy to disassemble and assemble, which will affect the progress of the experiment to a certain extent. In the utility model, the connecting pipe 4 is aligned with the outlet pipe 31 and slightly The micro-sleeve is put on, and the screw 43 is docked with the thread groove 33, and then the connecting ring 46 is rotated. The connecting ring 46 uses the internal gear 45 to drive the external gear 44 to rotate, so that the screw 43 rotates along, and the screw 43 can enter the thread groove 33 to complete the connection with the first fixed ring 32. When the gas tank 3 needs to be disassembled, the screw 43 for stable connection can be rotated at a faster speed, so that the screw 43 can be separated from the components on the gas tank 3 at a faster speed, thereby improving the disassembly and assembly efficiency of the gas tank 3 without affecting the connection stability between the gas tank 3 and the connecting pipe 4.

[0021] In other embodiments, the present embodiment discloses, please Figure 4 As shown, an anti-skid sleeve 47 is sleeved on the outer side of the connecting swivel 46, and the connecting swivel 46 and the anti-skid sleeve 47 are adhesively connected; through this design, the staff can exert force on the anti-skid sleeve 47 to drive when rotating the connecting swivel 46, which has greater friction, is easy to exert force and will not slip.

[0022] In other embodiments, the present embodiment discloses, please Figure 4As shown, a limit rotation block 49 is provided on the outer side of the connecting swivel 46, and a limit rotation groove 48 is provided on the inner side of the movable groove 42, and the limit rotation block 49 is slidably connected to the inner side of the limit rotation groove 48; through this design, the rotation of the connecting swivel 46 in the movable groove 42 can be limited to avoid displacement during operation, thereby further ensuring the stability of the disassembly and assembly mechanism.

[0023] In other embodiments, the present embodiment discloses, please Figure 3 As shown, the inner diameter of the connecting pipe 4 is 1.1 times the outer diameter of the outlet pipe 31, and a rubber sealing ring is provided at the connection between the connecting pipe 4 and the outlet pipe 31; through this design, it can be ensured that the connecting pipe 4 can better connect with the outlet pipe 31, and at the same time the sealing is stronger to avoid gas leakage. Example

[0024] In other embodiments, the present embodiment discloses, please Figure 1 , Figure 2 As shown, it also includes a rotating mechanism, which includes a rotating groove 11, which is opened in the workbench 1, and a placing turntable 2 is rotatably connected inside the rotating groove 11. The outer side of the bottom end of the workbench 1 is provided with a rotating groove 11, and a connecting groove 12 is opened on the top end surface of the rotating groove 11. A motor 13 is arranged inside the connecting groove 12. One end of the placing turntable 2 extends to the inside of the connecting groove 12 and is transmission-connected with the motor 13. A gas tank placing groove 21 is opened on the top end surface of the placing turntable 2, and the gas tank 3 is plugged into the inside of the gas tank placing groove 21. A positioning rotating block 22 is arranged on the bottom end surface of the placing turntable 2, and a positioning rotating block 22 is opened inside the connecting groove 12. The positioning rotating block 22 is slidably connected to the inner side of the positioning rotating groove 14. In the present embodiment, when a new gas cylinder 3 needs to be replaced, the motor 13 is turned on, and the motor 13 drives the placement turntable 2 to rotate, so that the brand new and unused gas cylinder 3 is rotated to a suitable position, and then the gas cylinder 3 is installed. At the same time, when the placement turntable 2 rotates, the positioning rotating block 22 rotates in the positioning rotating groove 14 to ensure basic stability. When any gas cylinder 3 is used up, the alternative gas cylinder 3 on the placement turntable 2 can be rotated to the connecting pipe 4 and connected to the connecting pipe 4, so as to further improve the efficiency when replacing the gas cylinder 3.

[0025] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A laboratory gas supply device, comprising a workbench (1) and a disassembly and assembly mechanism, characterized in that: The disassembly and assembly mechanism comprises a gas cylinder (3), the gas cylinder (3) being located at the top of the workbench (1) and being connected to a connecting pipe (4) at the output end, the output end of the gas cylinder (3) being provided with an air outlet pipe (31), the outer side of the air outlet pipe (31) being provided with a first fixing ring (32), a surface of the first fixing ring (32) on one side close to the connecting pipe (4) being provided with a thread groove (33), the outer side of the connecting pipe (4) being provided with a second fixing ring (41), a surface of the second fixing ring (41) on one side close to the air outlet pipe (31) being provided with a thread groove (33), A movable groove (42), the inner side bearing of the movable groove (42) is connected to a screw rod (43), the outer side of the screw rod (43) is provided with an external gear (44), and one end of the screw rod (43) extends to the outer side of the connecting pipe (4) and is threadedly connected to the inner side of the thread groove (33), the outer side of the external gear (44) is meshedly connected with an internal gear (45), the outer side of the internal gear (45) is provided with a connecting swivel (46), and the outer ring of the connecting swivel (46) passes through the second fixed circular ring (41) and extends to the outer side of the second fixed circular ring (41).

2. A laboratory gas supply device according to claim 1, characterized in that: The screw rods (43) are distributed in a ring shape around the outer side of the second fixed circular ring (41), and the number of the thread grooves (33), the external gears (44) and the screw rods (43) is the same.

3. A laboratory gas supply device according to claim 1, characterized in that: The outer side of the connecting swivel (46) is sleeved with an anti-slip sleeve (47), and the connecting swivel (46) and the anti-slip sleeve (47) are adhesively connected.

4. A laboratory gas supply device according to claim 1, characterized in that: A limit rotation block (49) is provided on the outer side of the connecting rotating ring (46), a limit rotation groove (48) is provided on the inner side of the movable groove (42), and the limit rotation block (49) is slidably connected to the inner side of the limit rotation groove (48).

5. A laboratory gas supply device according to claim 1, characterized in that: The inner diameter of the connecting pipe (4) is 1.1 times the outer diameter of the air outlet pipe (31), and a rubber sealing ring is provided at the connection between the connecting pipe (4) and the air outlet pipe (31).

6. A laboratory gas supply device according to claim 1, characterized in that: The utility model also comprises a rotating mechanism, wherein the rotating mechanism comprises a rotating groove (11), the rotating groove (11) is provided in the workbench (1), a placing turntable (2) is rotatably connected inside the rotating groove (11), a rotating groove (11) is provided on the outside of the bottom end of the workbench (1), a connecting groove (12) is provided on the top end surface of the rotating groove (11), a motor (13) is provided on the inside of the connecting groove (12), one end of the placing turntable (2) extends to the inside of the connecting groove (12) and is transmission-connected to the motor (13), a gas tank placing groove (21) is provided on the top end surface of the placing turntable (2), the gas tank (3) is plugged into the inside of the gas tank placing groove (21), a positioning rotating block (22) is provided on the bottom end surface of the placing turntable (2), a positioning rotating groove (14) is provided on the inside of the connecting groove (12), and the positioning rotating block (22) is slidably connected to the inside of the positioning rotating groove (14).

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