Portable gas chromatograph for environment detection

Abstract

The utility model relates to the field of gas chromatographs, in particular to a portable gas chromatograph for environment detection, which comprises two groups of support frames, a gas chromatograph body is fixedly connected between the two groups of support frames, the inner sides of the two groups of support frames are rotatably connected with a rotating shaft through bearings, and two groups of connecting plates are fixedly connected between the two groups of support frames. The two connecting plates are rotationally connected with first screws through bearings, the first screws are in threaded connection with the inner sides of moving plates, and cleaning cotton is detachably installed at the top ends of the moving plates. When the device is used, the moving wheels can be adjusted through the same group of motors, so that the device is convenient to move, the cleaning cotton can be driven to move back and forth at the bottom of the gas chromatograph body, the bottom of the gas chromatograph body is convenient to clean, and the driving force of the motors is fully utilized.

Description

Technical Field

[0001] The utility model relates to the field of gas chromatographs, in particular to a portable gas chromatograph for environmental detection. Background Art

[0002] Chromatograph is a device used for chromatographic separation and analysis. It includes a sampling system, a detection system, a recording and data processing system, a temperature control system, and a mobile phase control system. Modern chromatographs are characterized by stability, sensitivity, versatility, and a high degree of automation. There are gas chromatographs, liquid chromatographs, and gel chromatographs. These chromatographs are widely used in the analysis of chemical products and certain contents of polymer materials. Gel chromatography can also determine the molecular weight and distribution of polymer materials. Existing gas chromatographs, such as a gas chromatograph for environmental testing with publication number CN220152390U, include a base, the bottom four corners of the base are fixedly installed with anti-slip blocks, the top is fixedly installed with a gas chromatograph body, and the bottom is provided with a mounting groove, two mounting blocks are fixedly installed on the top inner wall of the mounting groove, and two worms are rotatably installed on the top inner wall, and the two worms are fixedly sleeved with gears and first bevel gears, two A movable groove is provided at the bottom of the mounting blocks, and a rotating shaft is rotatably installed on the sides of the two mounting blocks away from each other, a worm gear and a cam are fixedly sleeved on the two rotating shafts, and the two worm gears are respectively engaged with the corresponding worms, and a vertical rod is movably installed in the two movable grooves, and the bottom ends of the two vertical rods are fixedly installed with the same movable plate, wheels are rotatably installed at the four corners of the bottom of the movable plate, and two rollers compatible with the cam are rotatably installed on the top, a double-axis motor is fixedly installed in the mounting groove, and second bevel teeth are fixedly sleeved on the two output shafts of the double-axis motor, and the two second bevel teeth are respectively engaged with the corresponding first bevel teeth.

[0003] When the gas chromatograph is in use, the wheels are driven by a dual-axis motor to contact the ground, thereby facilitating the movement and adjustment of the position of the entire gas chromatograph, and facilitating the operator to clean the bottom of the gas chromatograph to prevent the breeding of pests and bacteria. However, manual cleaning is still required when cleaning the bottom of the gas chromatograph, which is laborious. For this reason, we propose a portable gas chromatograph for environmental testing. Utility Model Content

[0004] The utility model aims to provide a portable gas chromatograph for environmental detection, comprising two groups of support frames, a gas chromatograph body is fixedly connected between the two groups of support frames, the inner sides of the two groups of support frames are rotatably connected to a rotating shaft through bearings, two groups of connecting plates are fixedly connected between the two groups of support frames, the two groups of connecting plates are rotatably connected to a screw rod 1 through bearings, the screw rod 1 is threadedly connected to the inner side of a moving plate, a cleaning cotton is detachably installed on the top of the moving plate, the screw rod 1 and the two groups of rotating shafts are fixedly connected to a group of bevel gear 1, three groups of bevel gear 1s are meshed with a group of bevel gear 2s, the three groups of bevel gear 2s are fixedly sleeved on the outer wall of the rotating rod, and one end of the rotating rod is fixedly connected to the driving end of the motor.

[0005] Preferably, the rotating rod is rotatably connected to two groups of stabilizing plates via a bearing, the two groups of stabilizing plates are respectively fixedly connected to two groups of outer walls of the support frames, and the motor is fixedly mounted on an outer wall of one group of stabilizing plates.

[0006] Preferably: two groups of support rods are slidably connected in the inner cavities of the two groups of support frames, screw rod 2 is threadedly connected to the inner side of the support rod, the top end of screw rod 2 is fixedly connected to bevel gear 3, bevel gear 3 meshes with bevel gear 4, four groups of bevel gears 4 are fixedly sleeved on the outer walls of the two groups of rotating shafts, and a group of moving wheels are installed at the bottom of the four groups of support rods.

[0007] Preferably: the four groups of screw rods 2 are all rotatably connected to the limit plate through bearings, and the limit plate is fixedly installed on the inner wall of the support frame.

[0008] Preferably, two groups of the connecting plates are fixedly connected to the lower end of the outer wall of the gas chromatograph body, and one group of the connecting plates is fixedly connected to the push rod.

[0009] Preferably, two groups of guide rods are fixedly connected between the two groups of connecting plates, and the guide rods slide through the inner side of the movable plate.

[0010] Preferably, the top of the cleaning cotton can contact the bottom of the gas chromatograph body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When the utility model is used, the starting motor will drive the rotating rod to rotate, the rotation of the rotating rod will drive the three sets of bevel gears to rotate, the rotation of the three sets of bevel gears to rotate will drive the three sets of bevel gears to rotate, and then drive the screw rod and the two sets of rotating shafts to rotate; the rotation of the rotating shaft will drive the bevel gear four to rotate, the rotation of the bevel gear four will drive the bevel gear three to rotate, the rotation of the bevel gear three will drive the screw rod two to rotate, the rotation of the screw rod two will drive the support rod to move downward a suitable distance, so that the moving wheel contacts the ground and the support frame is separated from the ground, which is convenient for pushing the entire device to move; the rotation of the screw rod will drive the moving plate to move, the movement of the moving plate will drive the cleaning cotton to move, and the movement of the cleaning cotton will clean the bottom of the gas chromatograph body without manual cleaning.

[0013] 2. When the utility model is used, the same set of motors can be used to adjust the moving wheels to facilitate the movement of the device, and can also drive the cleaning cotton to move back and forth at the bottom of the gas chromatograph body, so as to facilitate the cleaning of the bottom of the gas chromatograph body and make full use of the driving force of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 Schematic diagram of the internal structure of the support frame;

[0016] Figure 3 It is a partial structural schematic diagram of the utility model.

[0017] In the figure: 1. Gas chromatograph body; 2. Support frame; 3. Rotating shaft; 4. Connecting plate; 5. Screw rod 1; 6. Moving plate; 7. Bevel gear 1; 8. Bevel gear 2; 9. Rotating rod; 10. Motor; 11. Stabilizing plate; 12. Cleaning cotton; 13. Support rod; 14. Screw rod 2; 15. Bevel gear 3; 16. Bevel gear 4; 17. Limiting plate; 18. Moving wheel; 19. Guide rod; 20. Push rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 - Figure 3The figure shows a portable gas chromatograph for environmental detection of the utility model, comprising two groups of support frames 2, a gas chromatograph body 1 is fixedly connected between the two groups of support frames 2, the inner sides of the two groups of support frames 2 are rotatably connected to a rotating shaft 3 through bearings, two groups of connecting plates 4 are fixedly connected between the two groups of support frames 2, the two groups of connecting plates 4 are rotatably connected to a screw 5 through bearings, the screw 5 is threadedly connected to the inner side of a moving plate 6, a cleaning cotton 12 is detachably installed on the top of the moving plate 6, the screw 5 and the two groups of rotating shafts 3 are fixedly connected to a group of bevel gears 7, three groups of bevel gears 7 are meshed with a group of bevel gears 8, the three groups of bevel gears 8 are fixedly sleeved on the outer wall of a rotating rod 9, and one end of the rotating rod 9 is fixedly connected to the driving end of a motor 10.

[0020] The rotating rod 9 is rotatably connected to two groups of stabilizing plates 11 through bearings. The two groups of stabilizing plates 11 are respectively fixedly connected to the outer walls of two groups of support frames 2. The motor 10 is fixedly installed on the outer wall of one group of stabilizing plates 11. Two groups of stabilizing plates 11 are provided to ensure that the installation structure of the motor 10 and the rotating rod 9 is stable.

[0021] Two groups of support rods 13 are slidably connected in the inner cavity of the two groups of support frames 2, and screw rods 2 14 are threadedly connected to the inner sides of the support rods 13. The top of screw rods 2 14 is fixedly connected to bevel gear 3 15, and bevel gear 3 15 meshes with bevel gear 4 16. Four groups of bevel gear 4 16 are respectively fixedly sleeved on the outer walls of the two groups of rotating shafts 3. A group of moving wheels 18 are installed at the bottom of the four groups of support rods 13. The rotation of the rotating shaft 3 will drive the bevel gear 4 16 to rotate, the rotation of the bevel gear 4 16 will drive the bevel gear 3 15 to rotate, the rotation of the bevel gear 3 15 will drive the screw rods 2 14 to rotate, and the rotation of the screw 2 14 will drive the support rods 13 to move up and down.

[0022] The four groups of screw rods 14 are all rotatably connected to the limit plate 17 through bearings. The limit plate 17 is fixedly installed on the inner wall of the support frame 2, so that the structure of the screw rods 14 is stable.

[0023] The two groups of connecting plates 4 are fixedly connected to the lower end of the outer wall of the gas chromatograph body 1, and one group of connecting plates 4 is fixedly connected to the push rod 20. When the moving wheel 18 contacts the ground and the support frame 2 is off the ground, the push rod 20 facilitates the movement of the entire device.

[0024] Two groups of guide rods 19 are fixedly connected between the two groups of connecting plates 4. The guide rods 19 slide through the inner side of the movable plate 6. The two groups of guide rods 19 are provided to provide guidance for the movement of the movable plate 6.

[0025] The top of the cleaning cotton 12 can contact the bottom of the gas chromatograph body 1. The movement of the movable plate 6 will drive the cleaning cotton 12 to move. The movement of the cleaning cotton 12 will clean the bottom of the gas chromatograph body 1 without manual cleaning. It should be noted that the cleaning cotton 12 needs to be replaced regularly. During cleaning, alcohol or other liquids can be sprayed on the cleaning cotton 12 to facilitate cleaning of the bottom of the gas chromatograph body 1 and prevent pest reproduction and bacterial growth.

[0026] The working principle of the utility model is as follows: when the gas chromatograph body 1 needs to be moved, the starting motor 10 will drive the rotating rod 9 to rotate, the rotation of the rotating rod 9 will drive the three sets of bevel gears 2 8 to rotate, the rotation of the three sets of bevel gears 2 8 will drive the three sets of bevel gears 1 7 to rotate, and then drive the screw 1 5 and the two sets of rotating shafts 3 to rotate; the rotation of the rotating shaft 3 will drive the bevel gear 4 16 to rotate, the rotation of the bevel gear 4 16 will drive the bevel gear 3 15 to rotate, the rotation of the bevel gear 3 15 will drive the screw 2 14 to rotate, the rotation of the screw 2 14 will drive the support rod 13 to move downward a suitable distance, so that the moving wheel 18 contacts the ground and the support frame 2 is separated from the ground. At this time, the push rod 20 is used to facilitate the movement of the entire device; in the process of adjusting the moving wheel 18, the rotation of the screw 1 5 will drive the moving plate 6 to move, the movement of the moving plate 6 will drive the cleaning cotton 12 to move, and the movement of the cleaning cotton 12 will clean the bottom of the gas chromatograph body 1 without manual cleaning.

[0027] It should be noted that the gas chromatograph body 1 is a prior art and will not be described in detail here; it should also be noted that screw 2 14 and screw 1 5 need to be customized in the factory to ensure that the support rod 13 will not detach from the support frame 2 when the movable plate 6 moves back and forth on the screw 1 5.

[0028] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A portable gas chromatograph for environmental detection, comprising two sets of support frames (2), characterized in that: A gas chromatograph body (1) is fixedly connected between the two groups of support frames (2); the inner sides of the two groups of support frames (2) are rotatably connected to a rotating shaft (3) via bearings; two groups of connecting plates (4) are fixedly connected between the two groups of support frames (2); the two groups of connecting plates (4) are rotatably connected to a screw rod (5) via bearings; the screw rod (5) is threadedly connected to the inner side of a movable plate (6); a cleaning cotton (12) is detachably installed on the top of the movable plate (6); the screw rod (5) and the two groups of rotating shafts (3) are fixedly connected to a group of helical gears (7); the three groups of helical gears (7) are meshed with a group of helical gears (8); the three groups of helical gears (8) are fixedly sleeved on the outer wall of a rotating rod (9); one end of the rotating rod (9) is fixedly connected to the driving end of a motor (10).

2. A portable gas chromatograph for environmental detection according to claim 1, characterized in that: The rotating rod (9) is rotatably connected to two groups of stabilizing plates (11) via a bearing; the two groups of stabilizing plates (11) are respectively fixedly connected to the outer walls of two groups of support frames (2); and the motor (10) is fixedly mounted on the outer wall of one group of stabilizing plates (11).

3. The portable gas chromatograph for environmental detection according to claim 1, characterized in that: Two groups of support rods (13) are slidably connected in the inner cavities of the two groups of support frames (2), and the inner sides of the support rods (13) are threadedly connected with screw rods 2 (14). The top ends of the screw rods 2 (14) are fixedly connected with bevel gears 3 (15), and the bevel gears 3 (15) mesh with bevel gears 4 (16). The four groups of bevel gears 4 (16) are respectively fixedly sleeved on the outer walls of the two groups of rotating shafts (3), and a group of moving wheels (18) are installed at the bottoms of the four groups of support rods (13).

4. A portable gas chromatograph for environmental detection according to claim 3, characterized in that: The four groups of screw rods (14) are all rotatably connected to the limit plate (17) through bearings, and the limit plate (17) is fixedly mounted on the inner wall of the support frame (2).

5. The portable gas chromatograph for environmental detection according to claim 1, characterized in that: Both groups of the connecting plates (4) are fixedly connected to the lower end of the outer wall of the gas chromatograph body (1), and one group of the connecting plates (4) is fixedly connected to the push rod (20).

6. The portable gas chromatograph for environmental detection according to claim 1, characterized in that: Two groups of guide rods (19) are fixedly connected between the two groups of connecting plates (4), and the guide rods (19) slide through the inner side of the movable plate (6).

7. The portable gas chromatograph for environmental detection according to claim 1, characterized in that: The top end of the cleaning cotton (12) can contact the bottom of the gas chromatograph body (1).

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