Liquid chromatograph for analyzing and detecting water quality of lakes and reservoirs

Abstract

The invention discloses a liquid chromatograph for lake and reservoir water quality analysis and detection, and belongs to the technical field of chromatographic instruments. Comprising a liquid chromatograph body, a plurality of moving wheels are arranged on the lower surface of the liquid chromatograph body, and a sealing door is arranged on the front surface of the liquid chromatograph body; by pulling a U-shaped push rod outwards and through the linkage design of a control box, a transmission box, a gear and other components, folding of supporting legs and landing of moving wheels can be automatically achieved, independent operation on a supporting structure and a moving structure is not needed, meanwhile, fixing and limiting of a first sliding plate can be relieved by shifting two L-shaped shifting plates, and therefore the supporting legs and the moving wheels can be conveniently moved. By means of the arrangement of the two first round holes and the two second round holes, it can be ensured that the U-shaped push rod can stably push the instrument when the instrument is pushed, it can be ensured that the multiple supporting legs can stably support the instrument when the instrument is stably supported, the preparation time of on-site detection is greatly saved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chromatographs, and in particular to a liquid chromatograph for analyzing and detecting lake water quality. Background Art

[0002] With the increasing awareness of environmental protection and the emphasis on the protection of lake and reservoir water resources, lake and reservoir water quality monitoring has become a key link in protecting the ecological environment and human health. The water quality of lakes and reservoirs is complex, and many items need to be tested, covering indicators reflecting the comprehensive status of water quality and various toxic and harmful substances. This puts extremely high demands on the performance of detection technology and instruments. Liquid chromatography, as an efficient separation and analysis instrument, is widely used in the field of lake and reservoir water quality analysis and testing. It achieves separation and identification of mixtures by utilizing the differences in distribution, adsorption, ion exchange and steric exclusion of each component of the sample between the stationary phase and the mobile phase, providing strong technical support for water quality analysis.

[0003] However, existing liquid chromatographs need to be frequently moved to different lake and reservoir monitoring points, which makes them extremely difficult to carry. It is difficult for testing personnel to transport them to the site conveniently, and it is difficult to meet the urgent demand for convenient, efficient and stable instruments in current work scenarios such as rapid on-site testing of lake and reservoir water quality and emergency monitoring, thereby reducing the flexibility and timeliness of the device. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a solution to the problem that the existing liquid chromatograph is extremely difficult to carry, and it is difficult for testing personnel to transport it to the site conveniently, and it is difficult to meet the urgent demand for convenient, efficient and stable instruments in current work scenarios such as on-site rapid testing of lake water quality and emergency monitoring.

[0005] Technical solution: A liquid chromatograph for analyzing and detecting lake water quality, comprising a liquid chromatograph body, a plurality of movable wheels being provided on the lower surface of the liquid chromatograph body, a sealing door being provided on the front surface of the liquid chromatograph body, and a display screen being provided on the front surface of the liquid chromatograph body and above the sealing door;

[0006] The left and right sides of the liquid chromatograph body are fixedly connected to fixed boxes, and the interiors of the two fixed boxes are slidably connected to movable plates. The lower surfaces of the two movable plates are symmetrically fixedly connected to support legs, and the lower surfaces of multiple support legs extend to the bottom of the two fixed boxes respectively.

[0007] Furthermore, the rear surface of the liquid chromatograph body is fixedly connected to a control box, the interior of the control box is slidably connected to a sliding plate 1, the interior rear surface of the control box is provided with a through groove, the rear surface of the sliding plate 1 is fixedly connected to a U-shaped push rod, a circular hole 1 is provided on the left and right sides of the interior of the control box, a sliding cavity is provided on the left and right sides of the interior of the control box, the interiors of the two sliding cavities are slidably connected to a piston plate 1, the opposite sides of the two piston plates 1 are fixedly connected to fixing rods, and the opposite ends of the two fixing rods extend to the insides of the two circular holes 1 respectively.

[0008] Furthermore, the left and right sides of the liquid chromatograph body are rotatably connected to gears, the opposite sides of the two gears are fixedly connected to rotating discs, the lower outer side walls of the two rotating discs are rotatably connected to support rods, and the inner upper surfaces of the two fixed boxes are provided with through-type makeshift grooves, and the bottom ends of the two support rods respectively pass through the two makeshift grooves and are rotatably connected to the upper surfaces of the two movable plates through rotating shafts.

[0009] Furthermore, a transmission box is fixedly connected to the left and right sides of the liquid chromatograph body and behind the two rotating discs, and a sliding plate 2 is slidably connected to the interior of the two transmission boxes. The front surfaces of the two sliding plates 2 are fixedly connected to a rack plate, and the lower surfaces of the two rack plates are respectively meshed with the outer walls of the two gears, and the interiors of the two transmission boxes are connected to the interior of the control box.

[0010] Furthermore, the interior of the U-shaped push rod is symmetrically provided with a toggle cavity, and the inner rear surfaces of the two toggle cavities are provided with a through-type sliding groove. The interiors of the two toggle cavities are slidably connected to the piston plate 2, and the opposite sides of the two piston plates 2 are fixedly connected with an L-shaped toggle plate. The sides of the two L-shaped toggle plates away from the two piston plates 2 respectively pass through the two sliding grooves, and the interiors of the two toggle cavities are respectively connected to the interiors of the two sliding cavities.

[0011] Furthermore, a second circular hole is provided on the left side and the right side of the interior of the control box and located behind the two first circular holes.

[0012] Furthermore, the opposite sides of the two L-shaped toggle plates are respectively fixedly connected to the inside of the two toggle cavities with return springs.

[0013] Furthermore, the lower surfaces of the plurality of support legs are provided with anti-slip pads.

[0014] Beneficial effect: By pulling the U-shaped push rod outward, the support legs can be automatically retracted and the moving wheels can be put on the ground through the linkage design of the control box, transmission box, gears and other components, without the need to operate the support structure and the moving structure separately. At the same time, by toggling the two L-shaped toggle plates, the fixed limit of the sliding plate 1 can be released. Combined with the setting of the two round holes 1 and the two round holes 2, when pushing the instrument, it can be ensured that the U-shaped push rod can stably push the instrument, and when stably supporting the instrument, it can be ensured that multiple support legs can stably support the instrument, which greatly saves the preparation time for on-site testing and reduces the difficulty of operation.

[0015] The multiple moving wheels on the lower surface of the liquid chromatograph body, combined with the U-shaped push rod that can be pulled out from the rear surface, allow testers to easily push the instrument to different lake and reservoir monitoring points. Compared with traditional liquid chromatographs that are bulky and difficult to carry, this greatly reduces the difficulty of manual handling and significantly improves the transportation efficiency of the instrument in scenarios such as rapid on-site testing and emergency monitoring of lakes and reservoirs.

[0016] The movable plates and support legs in the fixed boxes on the left and right sides of the instrument are designed so that the support legs can be lowered after the instrument reaches the designated position. Combined with the anti-slip pads on the lower surface, the friction with the ground is increased, ensuring that the instrument stands firmly on the ground and avoiding shaking caused by the moving wheels. This provides a stable foundation for testing work and effectively guarantees the accuracy of test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the fixed box, gear and transmission box of the present invention;

[0019] Figure 3 is a schematic side view of the cross section of the transmission case of the present invention;

[0020] Figure 4 It is a side structural schematic diagram of the cross section of the fixed box of the present invention;

[0021] Figure 5 It is a rear view structural diagram of the control box and the U-shaped push rod of the present invention;

[0022] Figure 6 1 is a schematic top view of the cross section of the sliding plate 1 and the U-shaped push rod of the present invention;

[0023] Figure 7 It is a schematic diagram of the overall structure of the circular hole 1 and the circular hole 2 of the present invention.

[0024] In the figure: 1. Liquid chromatograph body; 2. Moving wheel; 3. Sealing door; 4. Display screen; 5. Fixed box; 6. Movable plate; 7. Support leg; 8. Control box; 9. Sliding plate 1; 10. Groove; 11. U-shaped push rod; 12. Round hole 1; 13. Sliding cavity; 14. Piston plate 1; 15. Fixed rod; 16. Gear; 17. Rotating disk; 18. Support rod; 19. Give way groove; 20. Transmission box; 21. Sliding plate 2; 22. Rack plate; 23. Toggle cavity; 24. Slide groove; 25. Piston plate 2; 26. L-shaped toggle plate; 27. Round hole 2; 28. Return spring; 29. ​​Anti-slip pad. DETAILED DESCRIPTION

[0025] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example

[0027] like Figure 1 、 Figure 2 and Figure 4 As shown, a liquid chromatograph for lake and reservoir water quality analysis and detection is provided, comprising a liquid chromatograph body 1, a plurality of movable wheels 2 being provided on the lower surface of the liquid chromatograph body 1, a sealing door 3 being provided on the front surface of the liquid chromatograph body 1, and a display screen 4 being provided on the front surface of the liquid chromatograph body 1 and above the sealing door 3; a fixed box 5 is fixedly connected to the left and right sides of the liquid chromatograph body 1, a movable plate 6 is slidably connected to the interior of the two fixed boxes 5, and support legs 7 are symmetrically fixedly connected to the lower surfaces of the two movable plates 6, and the lower surfaces of the plurality of support legs 7 respectively extend to the bottom of the two fixed boxes 5;

[0028] By setting up multiple moving wheels 2, the liquid chromatograph body 1 can be flexibly moved to different lake and reservoir monitoring points, solving the problem of difficult transportation of traditional instruments. The sealed door 3 is not only convenient for staff to open the instrument to maintain and repair the infusion system, chromatographic column and other components inside the instrument and replace consumables, but also can effectively prevent dust, water vapor and other external impurities from entering, ensuring the stable operation of the instrument. The display screen 4 can intuitively display the test data, instrument operation status and other information, which is convenient for operators to grasp the instrument status and detection progress in real time. In addition, the movable plates 6 and support legs 7 are slidably connected inside the fixed box 5 on the left and right sides of the liquid chromatograph body 1. When the instrument is moved to the specified position, the support legs 7 can be lowered by controlling the movement of the two movable plates 6, so that the instrument can stand firmly on the ground, avoiding the shaking caused by the moving wheels 2 affecting the detection accuracy. After the detection is completed, the support legs 7 are put into the fixed box 5 without affecting the secondary movement of the instrument. Then, the retractable support structure takes into account the mobility and stability of the instrument, greatly improving the practicality and adaptability of the instrument in on-site detection of lake and reservoir water quality.

[0029] like Figure 1 、 Figure 5 、 Figure 6 and Figure 7 As shown, the rear surface of the liquid chromatograph body 1 is fixedly connected to a control box 8, a sliding plate 9 is slidably connected to the interior of the control box 8, a through groove 10 is provided on the inner rear surface of the control box 8, a U-shaped push rod 11 is fixedly connected to the rear surface of the sliding plate 9, a circular hole 12 is provided on the left and right sides of the interior of the control box 8, a sliding cavity 13 is provided on the left and right sides of the interior of the control box 8, a piston plate 14 is slidably connected to the interior of the two sliding cavities 13, and the opposite sides of the two piston plates 14 are fixedly connected to fixed rods 15, and the opposite ends of the two fixed rods 15 extend to the inside of the two circular holes 12 respectively;

[0030] When the liquid chromatograph body 1 needs to be moved, the operator controls the two fixed rods 15 to move, and the fixed rod 15 drives the piston plate 14 to slide in the sliding cavity 13, releasing the limit of the sliding plate 9. At this time, the U-shaped push rod 11 is held and pulled outward, and the U-shaped push rod 11 drives the sliding plate 9 to slide along the groove 10 in the control box 8. The U-shaped push rod 11 is pulled out of the control box 8 and the sliding plate 9 is limited again, which makes it convenient for the operator to hold the U-shaped push rod 11 to push the liquid chromatograph body 1, and realize the flexible movement of the instrument through the moving wheel 2. After moving to the target position, the limit of the sliding plate 9 is released. The U-shaped push rod 11 is fixedly stored in the control box 8 to prevent the U-shaped push rod 11 from shaking and affecting the operation or causing bumps when the instrument is moved. This not only allows the U-shaped push rod 11 to be hidden and stored when not in use, reducing the overall space occupied by the instrument and preventing protruding parts from being damaged during transportation or storage, but also allows the U-shaped push rod 11 to be quickly retracted and extended through a simple operation of the fixing rod 15, which is easy to operate and ensures the stability of the push rod during the movement of the instrument, thereby improving the convenience and safety of the instrument movement.

[0031] like Figure 1-Figure 5 As shown, the left and right sides of the liquid chromatograph body 1 are rotatably connected to gears 16, and the opposite sides of the two gears 16 are fixedly connected to rotating discs 17. The lower sides of the outer walls of the two rotating discs 17 are rotatably connected to support rods 18. The inner upper surfaces of the two fixed boxes 5 are provided with through-type makeshift grooves 19. The bottom ends of the two support rods 18 pass through the two makeshift grooves 19 and are rotatably connected to the upper surfaces of the two movable plates 6 through rotating shafts.

[0032] A transmission box 20 is fixedly connected to the left and right sides of the liquid chromatograph body 1 and located behind the two rotating discs 17. The interiors of the two transmission boxes 20 are slidably connected to sliding plates 21. The front surfaces of the two sliding plates 21 are fixedly connected to rack plates 22. The lower surfaces of the two rack plates 22 are respectively meshed with the outer side walls of the two gears 16. The interiors of the two transmission boxes 20 are connected to the interior of the control box 8.

[0033] When the U-shaped push rod 11 is pulled outward, the U-shaped push rod 11 drives the sliding plate 19 to slide in the control box 8. The movement of the sliding plate 19 causes the air pressure in the control box 8 to change. Since the control box 8 is connected to the inside of the two transmission boxes 20, the air pressure change causes the sliding plate 21 in the transmission box 20 to slide backward, and the sliding plate 21 drives the rack plate 22 fixed thereto to move backward. The rack plate 22 meshes with the gear 16, thereby driving the gear 16 to rotate. The gear 16 drives the rotating disk 17 to rotate synchronously. When the rotating disk 17 rotates, the support rod 18 rotatably connected to the lower side wall of the outer wall rotates accordingly and pulls the movable plate 6 to slide upward in the fixed box 5 through the clearance groove 19. The movable plate 6 drives the support legs 7 to move upward, so that the support legs 7 are off the ground. At this time, the moving wheels 2 contact the ground, which is convenient for the operator to push the liquid chromatograph body 1 to move. On the contrary, when the device moves to the specified point, the U-shaped push rod 11 is pushed back, and the multiple support legs 7 can be controlled to extend downward until they contact the ground, thereby ensuring the stability of the instrument.

[0034] Then, by pulling or pushing the U-shaped push rod 11, the support legs 7 can be folded and the moving wheels 2 can be touched the ground. The operation is simple and quick, and there is no need to operate the support structure and the moving structure separately. This greatly improves the efficiency of converting the instrument from a fixed state to a mobile state, saves the preparation time for on-site testing, improves the safety and reliability of the instrument during movement, and further optimizes the portability and practicality of the device.

[0035] like Figure 5-Figure 7 As shown, the interior of the U-shaped push rod 11 is symmetrically provided with a toggle cavity 23, and the rear surfaces of the interiors of the two toggle cavities 23 are provided with a through-type slide groove 24. The interiors of the two toggle cavities 23 are slidably connected to the piston plate 25, and the opposite sides of the two piston plates 25 are fixedly connected to an L-shaped toggle plate 26. The two L-shaped toggle plates 26 are away from the two piston plates 25. The sides pass through the two slide grooves 24 respectively. The interiors of the two toggle cavities 23 are respectively connected to the interiors of the two sliding cavities 13. The left and right sides of the interior of the control box 8 and are located behind the two circular holes 12 are provided with a second circular hole 27. The opposite sides of the two L-shaped toggle plates 26 are respectively fixedly connected to the interiors of the two toggle cavities 23 with a return spring 28.

[0036] When the instrument needs to be moved, the operator simultaneously pushes the two L-shaped toggle plates 26 inward, and the L-shaped toggle plates 26 drive the piston plate 25 to slide in the toggle cavity 23. Due to the connection relationship, the air pressure change causes the piston plate 14 to slide in the sliding cavity 13, driving the fixed rod 15 to disengage from the circular hole 12, releasing the restriction on the sliding plate 19. At this time, the U-shaped push rod 11 can be pulled, and the elastic force of the two return springs 28 can automatically insert the two fixed rods 15 into the inside of the two circular holes 27 when the sliding plate 19 slides to the position of the two circular holes 27, and then the sliding plate 19 is re-limited and fixed, which makes it convenient for the operator to hold the U-shaped push rod 11 to push the instrument and achieve flexible movement through the moving wheel 2;

[0037] When the instrument moves to the target position and needs stable support, the operator first pushes the two L-shaped push plates 26 inward to pull the two fixing rods 15 out from the inside of the two circular holes 27, thereby canceling the limit on the sliding plate 9, and pushing the sliding plate 9 inward through the U-shaped push rod 11. Then, the two fixing rods 15 are inserted into the inside of the two circular holes 12 through the elastic force of the two return springs 28, so that they cannot slide at will, ensuring that the U-shaped push rod 11 is firmly stored in the control box 8. At this time, the multiple support legs 7 are in the lowered state, stably supporting the instrument to prevent the instrument from shaking. , thus forming a double limit structure through the cooperation of the circular hole 12, the circular hole 27 and the fixing rod 15. When the instrument is fixed, the double limit ensures that the U-shaped push rod 11 is stable, thereby ensuring that the support legs 7 stably support the instrument, thereby improving the stability and reliability during the detection process. In the mobile state, the limit can be quickly released through simple operation, making it convenient to pull the U-shaped push rod 11 to move the instrument. The operation is simple and efficient, effectively avoiding problems such as instrument shaking and loosening of the push rod caused by loose limit, and significantly improving the safety and practicality of the instrument in both fixed and mobile states.

[0038] like Figure 1 、 Figure 2 and Figure 4 As shown, the lower surfaces of the multiple support legs 7 are provided with anti-slip pads 29;

[0039] When the instrument is moved to the detection position, multiple support legs 7 are lowered to support the instrument, and the anti-slip pad 29 fits tightly against the ground. By increasing the friction between the contact surfaces, it effectively prevents the instrument from being displaced during the detection process due to external force collision, uneven ground or accidental touch by the operator.

[0040] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A liquid chromatograph for analyzing and detecting lake water quality, comprising a liquid chromatograph body (1), characterized in that: The lower surface of the liquid chromatograph body (1) is provided with a plurality of moving wheels (2), the front surface of the liquid chromatograph body (1) is provided with a sealing door (3), and a display screen (4) is provided on the front surface of the liquid chromatograph body (1) and above the sealing door (3); The left and right sides of the liquid chromatograph body (1) are fixedly connected to fixed boxes (5), the interiors of the two fixed boxes (5) are slidably connected to movable plates (6), the lower surfaces of the two movable plates (6) are symmetrically fixedly connected to support legs (7), and the lower surfaces of the multiple support legs (7) extend respectively to the bottom of the two fixed boxes (5).

2. The liquid chromatograph for analyzing and detecting lake water quality according to claim 1, characterized in that: The rear surface of the liquid chromatograph body (1) is fixedly connected to a control box (8), the interior of the control box (8) is slidably connected to a sliding plate (9), the interior rear surface of the control box (8) is provided with a through groove (10), the rear surface of the sliding plate (9) is fixedly connected to a U-shaped push rod (11), the interior left and right sides of the control box (8) are provided with a circular hole (12), the interior left and right sides of the control box (8) are provided with a sliding cavity (13), the interiors of the two sliding cavities (13) are slidably connected to a piston plate (14), the opposite sides of the two piston plates (14) are fixedly connected to a fixing rod (15), and the opposite ends of the two fixing rods (15) extend to the interiors of the two circular holes (12) respectively.

3. The liquid chromatograph for analyzing and detecting lake water quality according to claim 2, characterized in that: The left and right sides of the liquid chromatograph body (1) are both rotatably connected to gears (16), and the opposite sides of the two gears (16) are fixedly connected to rotating discs (17). The lower sides of the outer walls of the two rotating discs (17) are both rotatably connected to support rods (18). The inner upper surfaces of the two fixed boxes (5) are each provided with a through-type clearance groove (19), and the bottom ends of the two support rods (18) respectively pass through the two clearance grooves (19) and are respectively rotatably connected to the upper surfaces of the two movable plates (6) through a rotating shaft.

4. The liquid chromatograph for analyzing and detecting lake water quality according to claim 3, characterized in that: A transmission box (20) is fixedly connected to the left and right sides of the liquid chromatograph body (1) and located behind the two rotating discs (17). The interiors of the two transmission boxes (20) are slidably connected to a sliding plate 2 (21). The front surfaces of the two sliding plates 2 (21) are fixedly connected to a rack plate (22). The lower surfaces of the two rack plates (22) are respectively engaged with the outer side walls of the two gears (16). The interiors of the two transmission boxes (20) are connected to the interior of the control box (8).

5. The liquid chromatograph for analyzing and detecting lake water quality according to claim 2, characterized in that: The U-shaped push rod (11) is symmetrically provided with a toggle cavity (23) inside, and the inner rear surfaces of the two toggle cavities (23) are provided with a through-type sliding groove (24), and the interiors of the two toggle cavities (23) are slidably connected with a piston plate 2 (25), and the opposite sides of the two piston plates 2 (25) are fixedly connected with an L-shaped toggle plate (26), and the sides of the two L-shaped toggle plates (26) away from the two piston plates 2 (25) respectively pass through the two sliding grooves (24), and the interiors of the two toggle cavities (23) are respectively connected with the interiors of the two sliding cavities (13).

6. The liquid chromatograph for analyzing and detecting lake water quality according to claim 5, characterized in that: A second circular hole (27) is provided on the inner left side and the inner right side of the control box (8) and located behind the two first circular holes (12).

7. The liquid chromatograph for analyzing and detecting lake water quality according to claim 6, characterized in that: Reset springs (28) are fixedly connected to the interiors of the two shifting cavities (23) at opposite sides of the two L-shaped shifting plates (26).

8. The liquid chromatograph for analyzing and detecting lake water quality according to claim 1, characterized in that: The lower surfaces of the plurality of support legs (7) are all provided with anti-slip pads (29).

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