Liquid chromatograph safety protection device

Abstract

The invention relates to the technical field of liquid chromatographs, in particular to a liquid chromatograph safety protection device which comprises a box body and a chromatograph body, and a box door is hinged to one side of the front end of the box body. By arranging the positioning mechanism, the device can efficiently and stably fix a solution bottle, a second motor drives a second lead screw to rotate, so that a sliding block stably slides in a sliding groove in a reciprocating mode, the position of a positioning plate is flexibly adjusted, the positioning plate is matched with an isosceles triangle containing groove, stable installation can be achieved, and the solution bottle is prevented from toppling over; meanwhile, the device is suitable for solution bottles of different sizes, the solution bottle fixing capacity is greatly improved through the design, the adaptability is higher, the stability is enhanced through the arrangement of a positioning spring, the solution bottles are prevented from being damaged in the transportation process, the use safety is improved, and on the whole, efficient, stable and safe positioning of the solution bottles is achieved through the positioning mechanism; and the protection performance is improved.

Description

Technical Field

[0001] This application relates to the field of liquid chromatography technology, and in particular to a safety protection device for a liquid chromatograph. Background Technology

[0002] Liquid chromatography (LC) is an important analytical instrument widely used in biochemistry, food analysis, pharmaceutical research, environmental analysis, and inorganic analysis. It primarily utilizes the difference in partition ratio between a mixture and a solid or between two immiscible liquids to separate the mixture, followed by analysis and identification. A liquid chromatograph mainly consists of an injection system, a high-pressure pump, a temperature control system, a chromatographic column, a detector, and a signal recording system. Its working principle mainly involves two physicochemical processes: partitioning and adsorption. After the sample enters the chromatographic column, different components have different partition coefficients between the mobile and stationary phases, resulting in varying degrees of separation between the two phases. Simultaneously, the adsorbent on the surface of the stationary phase adsorbs sample molecules, further promoting separation. The separated sample components then pass sequentially through the detector, which converts the signal into an electrical signal, which is then processed and analyzed by a computer system.

[0003] A search revealed Chinese Patent Publication No. CN219565945U, which discloses a safety protection device for a high-performance liquid chromatograph (HPLC). The device includes a liquid-carrying tray and an operation panel. The liquid-carrying tray has an internal limiting mechanism, with a first locking block on its rear side and a rotating rod on its top. The limiting mechanism includes a first clamping plate, two protective blocks, and a second clamping plate. The two protective blocks are fixedly connected to the first and second clamping plates respectively on their sides near the first and second clamping plates. This device solves the problem that existing HPLC instruments have an open liquid-carrying tray structure without a limiting mechanism. When a bottle containing the solution to be tested is placed inside the liquid-carrying tray, it is not properly restrained. This can lead to accidental contact between the bottle and the operator during HPLC use, causing the bottle to tip over or even spill, affecting work efficiency and ultimately the effectiveness of the instrument.

[0004] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks:

[0005] While the aforementioned device can assist in positioning the solution bottles during use, the liquid chromatograph itself lacks impact resistance. Collisions could damage its internal precision components, affecting instrument operation and incurring maintenance costs. Furthermore, it is inconvenient to carry and use, exhibiting poor overall protection. Additionally, the top-mounted solution bottle positioning structure can only position single-group arrangement of bottles, making it inconvenient when dealing with a large number of bottles. Therefore, improvements are needed. Summary of the Invention

[0006] To improve the overall protection performance of this device, this application provides a safety protection device for a liquid chromatograph.

[0007] This application provides a safety protection device for a liquid chromatograph, which adopts the following technical solution: it includes a housing and a chromatograph body. A door is hinged to one side of the front end of the housing. A drive mechanism is fixedly installed inside the lower end of the housing. An installation mechanism is fixedly installed on the top of the drive mechanism. The chromatograph body is installed on the top of the drive mechanism through the installation mechanism. A buffer mechanism is fixedly installed at the bottom of the housing. A positioning mechanism is fixedly installed on the top of the chromatograph body. A solution bottle is installed on the top of the chromatograph body through the positioning mechanism.

[0008] The drive mechanism includes a bottom rail and a first motor. The bottom rail is fixedly installed in the middle of the bottom of the housing. A first lead screw is rotatably connected inside the bottom rail. The first motor is fixedly installed in the middle of the lower rear side of the housing. The output end of the first motor is fixedly connected to the first lead screw. A slide rod is threadedly connected to the outer surface of the first lead screw. The top of the slide rod is fixedly connected to the bottom of the mounting mechanism.

[0009] Optionally, the mounting mechanism includes a base plate and a limiting component. The base plate is fixedly mounted on the top of the slide bar. Side rails are fixedly mounted on both sides of the top of the base plate. Slide plates are slidably connected inside the side rails. The inner side of the slide plates is fixedly connected to the lower ends of both sides of the chromatograph body. The limiting component is fixedly mounted on the lower front end of the chromatograph body.

[0010] Optionally, support blocks are fixedly installed on both sides of the bottom of the substrate, and ball bearings are rotatably connected to the bottom of the support blocks. The bottom of the ball bearings is fitted and connected to the bottom of the housing.

[0011] Optionally, the limiting assembly includes a front plate and a limiting groove. The front plate is fixedly installed on the lower front end of the chromatograph body. A concave seat is fixedly installed on the top of the front plate. A limiting spring is fixedly installed on the inner side of the concave seat. A limiting block is fixedly installed on the bottom of the limiting spring. The limiting groove is opened in the middle of the top front end of the substrate. A limiting post is fixedly installed on the bottom of the limiting block. The bottom of the limiting post is inserted into the inner side of the limiting groove.

[0012] Optionally, a connecting shaft is fixedly installed on the top of the limiting post, and an adjustable handrail is fixedly installed on the top of the connecting shaft through the concave seat.

[0013] Optionally, the buffer mechanism includes a support and a hinged seat. The support is fixedly installed at both ends of one side of the bottom of the chassis, and the hinged seat is fixedly installed at the other end of the bottom of the chassis. A buffer assembly is hinged to the bottom of the hinged seat, and a traveling wheel is rotatably connected to the inner side of the support.

[0014] Optionally, the buffer assembly includes buffer springs, which are fixedly installed at equal intervals on the bottom of the hinge seat, and an anti-slip support plate is fixedly installed on the bottom of the buffer springs.

[0015] Optionally, dampers are fixedly installed at equal intervals on the top of the anti-slip support plate, and anti-slip protrusions are fixedly connected at equal intervals on the bottom of the anti-slip support plate. All buffer springs are sleeved on the outside of the dampers.

[0016] Optionally, the positioning mechanism includes a square groove, which is located on the top of the chromatograph body. The square groove has accommodating slots evenly spaced on both sides. The accommodating slots have a triangular cross-sectional shape. A positioning component is fixedly installed on the inner rear end of the square groove. The solution bottle is disposed between the accommodating slot and the positioning component.

[0017] Optionally, the positioning component includes a chute and a second motor. The second motor is fixedly installed on the upper side of one side of the chromatograph body. The chute is opened at the rear end of the square groove. A second lead screw is rotatably connected inside the chute. The output end of the second motor and one end of the second lead screw are fixedly connected. The two ends of the second lead screw have opposite thread directions. Sliding blocks are threaded to both ends of the second lead screw. A limit rod is fixedly installed on the front of the sliding block. Positioning springs are fixedly installed at equal intervals on the outer side of the limit rod. A positioning plate is fixedly installed on the outer end of the positioning spring. The solution bottle is disposed between the positioning plate and the inner side of the receiving groove.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. By setting up a drive mechanism, this device can conveniently control the placement and disassembly of the chromatograph body. After starting the first motor, the first lead screw rotates, driving the slide bar to slide in the bottom rail, realizing the rapid displacement of the chromatograph body in the housing. When disassembly is required, the connecting shaft can be pulled out by adjusting the handle to separate the limiting column from the limiting groove, and the chromatograph body can be easily removed from the base plate. During installation, the sliding plate and the side rail slide into each other, and the limiting spring drives the limiting column to insert into the limiting groove to achieve a stable engagement. The support block and ball bearing design reduce friction and ensure the stable sliding of the chromatograph body. These designs improve the ease of operation and stability of the device, greatly facilitating its use.

[0020] 2. By incorporating a buffer mechanism, this device effectively cushions vibrations and enhances stability when placed on the ground or transported, utilizing buffer springs and dampers. When encountering bumps, the buffer springs and dampers work together, and the design of the hinged seat and wheels ensures the device's stability. When movement is required, simply adjusting the tilt of the housing allows for easy movement via the wheels. Simultaneously, the anti-slip support plate design ensures stability. Throughout the entire process, the chromatograph body remains safely within the housing, providing comprehensive protection. This design not only enhances the device's buffering and protection functions but also improves its flexibility and stability, thereby extending the device's service life.

[0021] 3. By setting up a positioning mechanism, this device achieves efficient positioning and fixing of solution bottles. By starting the second motor, the second lead screw is driven to rotate, which in turn drives the sliding block to slide stably back and forth in the groove, thereby flexibly adjusting the position of the positioning plate. The positioning plate cooperates with the isosceles triangular receiving groove to stably install solution bottles of different sizes and prevent them from tipping over. This design not only improves the adaptability of solution bottle positioning, but also increases the fixing capacity by three times compared to existing technologies. At the same time, the addition of the positioning spring enhances the stability of the positioning plate, effectively buffering the impact during transportation and reducing the risk of solution bottle breakage. Overall, this device achieves rapid, stable, and safe positioning of solution bottles through the positioning mechanism, improving the safety of use and enhancing the overall protective performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure viewed from below in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the internal structure of the chassis in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the drive mechanism in the embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the drive mechanism in its deployed state in an embodiment of this application;

[0027] Figure 6 This is a top view of the positioning mechanism in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the structure of the chromatograph body and the mounting mechanism in the embodiments of this application;

[0029] Figure 8 This is a schematic diagram of the chromatograph body and mounting mechanism in the unfolded state in the embodiments of this application;

[0030] Figure 9 This is an embodiment of the present application. Figure 7 A magnified structural diagram at point A.

[0031] Reference numerals: 1. Housing; 2. Chromatograph body; 3. Door; 4. Drive mechanism; 41. Bottom rail; 42. First motor; 43. First lead screw; 44. Slide rod; 5. Mounting mechanism; 51. Base plate; 52. Limiting assembly; 521. Front plate; 522. Limiting groove; 523. Concave seat; 524. Limiting spring; 525. Limiting block; 526. Limiting post; 527. Connecting shaft; 528. Adjusting handle; 53. Side rail; 54. Slide plate; 55. Support block; 56. 6. Ball bearing; 6. Buffer mechanism; 61. Support; 62. Hinge seat; 63. Buffer assembly; 631. Buffer spring; 632. Anti-slip support plate; 633. Damper; 64. Traveling wheel; 65. Anti-slip protrusion; 7. Positioning mechanism; 71. Square groove; 72. Receiving groove; 73. Positioning assembly; 731. Slide groove; 732. Second motor; 733. Second lead screw; 734. Sliding block; 735. Limiting rod; 736. Positioning spring; 737. Positioning plate; 8. Solution bottle. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0033] This application discloses a safety protection device for a liquid chromatograph. For example... Figure 1 As shown, the device includes a housing 1 and a chromatograph body 2. A door 3 is hinged to one side of the front end of the housing 1. A drive mechanism 4 is fixedly installed inside the lower end of the housing 1. An installation mechanism 5 is fixedly installed on the top of the drive mechanism 4. The chromatograph body 2 is installed on the top of the drive mechanism 4 through the installation mechanism 5. A buffer mechanism 6 is fixedly installed at the bottom of the housing 1. A positioning mechanism 7 is fixedly installed on the top of the chromatograph body 2. A solution bottle 8 is installed on the top of the chromatograph body 2 through the positioning mechanism 7. A luggage handle is fixedly installed on one side of the housing 1. The length of the luggage handle can be flexibly adjusted during use, making it easy to carry the device and convenient for transportation and use.

[0034] The drive mechanism 4 includes a bottom rail 41 and a first motor 42. The bottom rail 41 is fixedly installed in the middle of the bottom of the housing 1. A first lead screw 43 is rotatably connected inside the bottom rail 41. The first motor 42 is fixedly installed in the middle of the lower rear side of the housing 1. The output end of the first motor 42 is fixedly connected to the first lead screw 43. A slide rod 44 is threadedly connected to the outer surface of the first lead screw 43. The top of the slide rod 44 is fixedly connected to the bottom of the mounting mechanism 5. A door 3 is hinged to one side of the front end of the housing 1 for easy opening and closing. The drive mechanism 4 is fixedly installed in the lower part of the housing 1 for driving the movement of the chromatograph body 2. A mounting mechanism 5 is fixedly installed on the top of the drive mechanism 4. The chromatograph body 2 is mounted on the top of the drive mechanism 4 through the mounting mechanism 5. A buffer mechanism 6 is fixedly installed at the bottom of the housing 1 to provide stability and protection. A positioning mechanism 7 is fixedly installed on the top of the chromatograph body 2 for positioning and fixing the solution bottle 8. The drive mechanism 4 is specifically composed of the bottom rail 41 and the first motor 42. The bottom rail 41 is fixedly installed in the middle of the bottom of the housing 1. The slide bar 44 is fixedly installed in the middle of the bottom of the housing 1, serving as the track for the slide bar 44. The bottom rail 41 is rotatably connected to the first lead screw 43. The first motor 42 is fixedly installed in the middle of the lower rear side of the housing 1, and its output end is fixedly connected to the first lead screw 43. When the first motor 42 runs, it drives the first lead screw 43 to rotate. The outer surface of the first lead screw 43 is threadedly connected to the slide bar 44. The top of the slide bar 44 is fixedly connected to the bottom of the mounting mechanism 5. Therefore, when the first lead screw 43 rotates, the slide bar 44 will slide inside the bottom rail 41, thereby driving the mounting mechanism 5 and the chromatograph body 2 to move back and forth inside the housing 1. This design allows the chromatograph body 2 to be easily taken out and put into the housing 1, and also facilitates the movement of the chromatograph body 2 when needed. The presence of the buffer mechanism 6 enhances the stability of the device during transportation or placement, and reduces the impact of vibration on the chromatograph body 2 and the solution bottle 8. The positioning mechanism 7 ensures the stable installation of the solution bottle 8 and prevents it from tipping over or moving during transportation.

[0035] Please refer to Figure 5The mounting mechanism 5 includes a base plate 51 and a limiting component 52. The base plate 51 is fixedly mounted on the top of the slide bar 44. Side rails 53 are fixedly mounted on both sides of the top of the base plate 51. Slide plates 54 are slidably connected inside the side rails 53. The inner side of the slide plates 54 is fixedly connected to the lower ends of both sides of the chromatograph body 2. The limiting component 52 is fixedly mounted on the lower front end of the chromatograph body 2. The base plate 51 is firmly mounted on the top of the slide bar 44, serving as a support platform for the chromatograph body 2. Side rails 53 are fixedly mounted on both sides of the top of the base plate 51, providing guidance and stability for the installation of the chromatograph body 2. The side rails 53 are designed with a sliding connection structure inside, allowing the slide plates 54 to slide smoothly within them. The inner side of the slide plates 54 is fixedly connected to the lower ends of both sides of the chromatograph body 2. The mounting mechanism 5 is fixedly connected to ensure that the chromatograph body 2 is securely mounted on the base plate 51. The limiting component 52 is fixedly mounted on the lower front end of the chromatograph body 2, which limits the range of movement of the chromatograph body 2 on the base plate 51. Through the precise design and installation of the limiting component 52, it can be ensured that the chromatograph body 2 will not fall off or shift during movement, further enhancing the stability and safety of the device. The design of the mounting mechanism 5 fully considers the installation stability and ease of movement of the chromatograph body 2. Through the coordinated work of the base plate 51, side rail 53, slide plate 54 and limiting component 52, not only is the rapid installation and disassembly of the chromatograph body 2 realized, but its stability and safety during use are also ensured, providing a strong guarantee for the safe use of the liquid chromatograph.

[0036] Please refer to Figure 5The limiting assembly 52 includes a front plate 521 and a limiting groove 522. The front plate 521 is fixedly installed on the lower front end of the chromatograph body 2. A concave seat 523 is fixedly installed on the top of the front plate 521. A limiting spring 524 is fixedly installed on the inner side of the concave seat 523. A limiting block 525 is fixedly installed on the bottom of the limiting spring 524. The limiting groove 522 is opened in the middle of the top front end of the base plate 51. A limiting post 526 is fixedly installed on the bottom of the limiting block 525. The bottom of the limiting post 526 is inserted into the limiting groove 522. Inside the chromatograph 2, the front plate 521 is securely fixed to the lower front of the chromatograph body 2, serving as an interface for connection with the mounting mechanism 5. At the top of the front plate 521, a recessed seat 523 is fixedly installed, providing a space for installing a limiting spring 524. The limiting spring 524 is placed inside the recessed seat 523 and fixedly installed. A limiting block 525 is connected to the bottom of the spring to provide necessary support and cushioning when needed. Meanwhile, a limiting groove 522 is formed. A precise insertion position is provided at the top front center of the substrate 51. A limiting post 526 is fixedly installed at the bottom of the limiting spring 524. During movement, the limiting post 526 inserts into the limiting groove 522. When the chromatograph body 2 moves within the housing 1 along with the mounting mechanism 5, the limiting post 526 slides within the limiting groove 522, ensuring that the chromatograph body 2 maintains the correct position and orientation on the substrate 51. This design makes the chromatograph body 2 more stable during movement, avoiding displacement or detachment due to vibration or improper operation. At the same time, the buffering effect of the limiting spring 524 can also effectively reduce the risk of damage caused by impact, improving the safety and reliability of the entire device. In summary, the limiting assembly 52, through the coordinated work of the front plate 521, limiting groove 522, concave seat 523, limiting spring 524, limiting block 525, and limiting post 526, ensures the stability and safety of the chromatograph body 2 during movement, providing a strong guarantee for the safe use of the liquid chromatograph.

[0037] Please refer to Figure 4Support blocks 55 are fixedly installed on both sides of the bottom of the substrate 51. Ball bearings 56 are rotatably connected to the bottom of the support blocks 55. The bottom of the ball bearings 56 is in close contact with the bottom of the inner part of the housing 1. The support blocks 55 not only support the substrate 51, but also enhance the connection stability between the substrate 51 and the housing 1. Ball bearings 56 are rotatably connected to the bottom of the support blocks 55. These ball bearings 56 can roll freely, and their bottoms are in close contact with the bottom of the inner part of the housing 1. When the drive mechanism 4 drives the slide bar 44 to slide on the bottom rail 41, the substrate 51, support blocks 55 and the ball bearings 56 connected to them will also move. Since the ball bearings 56 are in close contact with the bottom of the inner part of the housing 1, they can reduce the frictional resistance of the substrate 51 during the movement, making the movement of the entire mounting mechanism 5 and the chromatograph body 2 smoother and more efficient. This design not only reduces the energy consumption of the device during the movement, but also extends the service life of each component.

[0038] Please refer to Figure 5 A connecting shaft 527 is fixedly installed on the top of the limiting post 526. An adjusting handle 528 is fixedly installed through the concave seat 523 on the top of the connecting shaft 527. The connecting shaft 527 is further fixedly installed on the top of the limiting post 526. This design not only strengthens the connection stability between the limiting post 526 and the upper component but also facilitates the installation of subsequent components. The top of the connecting shaft 527 passes through the concave seat 523, ensuring that the connecting shaft 527 is securely fixed within the concave seat 523, thus ensuring the structural strength and stability of the entire limiting assembly 52. ​​An adjusting handle 528 is fixedly installed on the top of the connecting shaft 527, allowing operators to easily adjust the limiting assembly 526. 2. Adjustment and operation: By adjusting the handle 528, the operator can easily control the insertion depth of the limiting column 526 in the limiting groove 522, thereby achieving precise control over the movement range of the chromatograph body 2 on the base plate 51. This design not only improves the convenience of operation but also enhances the adjustability of the device, allowing the operator to flexibly adjust the position of the chromatograph body 2 according to actual needs. With the addition of the connecting shaft 527 and the adjusting handle 528, the function of the limiting component 52 is further improved and enhanced. This not only enhances the structural stability and ease of operation of the device but also provides the operator with more flexible and precise control methods, further improving the performance and practicality of the liquid chromatograph safety protection device.

[0039] Please refer to Figure 2The buffer assembly 63 includes buffer springs 631, which are fixedly installed at equal intervals on the bottom of the hinge base 62. Anti-slip support plates 632 are fixedly installed on the bottom of the buffer springs 631. The design of the buffer springs 631 being fixedly installed at equal intervals on the bottom of the hinge base 62 allows the buffer springs 631 to evenly distribute impact force, improving the buffering effect. When the device is subjected to external vibration or impact, the buffer springs 631 can quickly compress and recover, absorbing and dispersing these forces, thereby reducing damage to the internal equipment of the chassis. Anti-slip support plates 632 are fixedly installed on the bottom of the buffer springs 631. The support plate 632, an anti-slip support plate, not only increases the contact area between the buffer assembly 63 and the ground, improving stability, but also adopts an anti-slip design to ensure that the device is not easy to slide or tip over during placement or movement. This design further enhances the overall stability and safety of the device. Through the coordinated work of the buffer spring 631 and the anti-slip support plate 632, the buffer assembly 63 can effectively absorb and disperse external impact forces, preventing the device from being damaged during transportation or placement. At the same time, the design of the anti-slip support plate 632 also enhances the stability between the device and the ground, improving the safety of use.

[0040] Please refer to Figure 1 The buffer mechanism 6 includes a support 61 and a hinge seat 62. The support 61 is fixedly installed at both ends of one side of the bottom of the chassis, and the hinge seat 62 is fixedly installed at the other end of the bottom of the chassis. A buffer assembly 63 is hinged to the bottom of the hinge seat 62. A traveling wheel 64 is rotatably connected to the inner side of the support 61. The support 61 is firmly fixedly installed at both ends of one side of the bottom of the chassis, serving as a support and stable foundation. The hinge seat 62 is fixedly installed at the other end of the bottom of the chassis, providing a hinge point that allows the buffer assembly 63 to rotate flexibly and adapt to different ground conditions. The bottom of the buffer assembly 63 is hinged to the hinge seat 62. This design allows the buffer assembly 63 to swing and adjust as needed to adapt to uneven ground or... To cope with external impacts, the buffer assembly 63 can absorb and disperse vibrations and impacts, reducing their impact on the internal equipment of the chassis. In addition, the inner side of the support 61 is rotatably connected with the traveling wheels 64. These traveling wheels 64 not only facilitate the movement and transportation of the entire device, but also provide a certain degree of support and stability when the device is placed. The design of the traveling wheels 64 makes it easy to move the device to the required position, and also facilitates the transfer between different working environments. Through the coordinated work of the support 61, the hinge seat 62 and the buffer assembly 63, as well as the auxiliary role of the traveling wheels 64, the buffer mechanism 6 achieves stable support and vibration reduction for the device during transportation and placement, improving the overall stability and safety of the device.

[0041] Please refer to Figure 2The top of the anti-slip support plate 632 is fixedly equipped with dampers 633 at equal intervals, and the bottom of the anti-slip support plate 632 is fixedly connected with anti-slip protrusions 65 at equal intervals. Buffer springs 631 are all sleeved on the outside of the dampers 633. The dampers 633 are fixedly installed at equal intervals on the top of the anti-slip support plate 632. These dampers 633 can generate a certain resistance through their internal damping material or structure when the device is subjected to impact or vibration, thereby slowing down the transmission speed of impact force and vibration, further protecting the safety of the equipment inside the chassis. Meanwhile, at the bottom of the anti-slip support plate 632, the dampers 633 are fixedly installed at equal intervals... The device is fixedly connected to the ground with anti-slip protrusions 65. These anti-slip protrusions 65 can increase the friction between the anti-slip support plate 632 and the ground, preventing the device from sliding or tipping over during placement or movement. The effect of the anti-slip protrusions 65 is more obvious on wet or uneven ground, ensuring that the device is placed and transported stably. With the damper 633 installed at the top and the anti-slip protrusions 65 set at the bottom, the anti-slip support plate 632 not only provides good anti-slip performance, but also further enhances the shock absorption capacity of the buffer assembly 63 to absorb shocks and vibrations, thereby improving the safety and stability of the entire device.

[0042] Please refer to Figure 7The positioning component 73 includes a slide groove 731 and a second motor 732. The second motor 732 is fixedly installed on the upper side of one side of the chromatograph body 2. The slide groove 731 is opened in the rear end of the square groove 71. A second lead screw 733 is rotatably connected inside the slide groove 731. The output end of the second motor 732 is fixedly connected to one end of the second lead screw 733. The two ends of the second lead screw 733 have opposite threads. Sliding blocks 734 are threaded to both ends of the second lead screw 733. Limiting rods 735 are fixedly installed on the front of the sliding blocks 734. Positioning springs 736 are fixedly installed at equal intervals on the outer side of the limiting rods 735. Positioning plates 737 are fixedly installed on the outer ends of the positioning springs 736. The solution bottle 8 is positioned between the inner sides of the positioning plate 737 and the receiving groove 72. The second motor 732 is fixedly installed on the upper side of the chromatograph body 2, serving as the power source for the positioning assembly 73. When the motor starts, it can drive the second lead screw 733 to rotate through its output end. The slide groove 731 is opened at the rear end of the square groove 71, providing a motion track for the second lead screw 733 and its accessories. The second lead screw 733 is rotatably connected inside the slide groove 731. Its two ends have opposite thread directions. When the lead screw rotates, because the two ends have opposite thread directions, the sliding blocks 734 at both ends will move inward or outward along the lead screw simultaneously, thus achieving synchronization and opposite directions. The sliding block 734 is fixedly mounted with limit rods 735 on its front side. These limit rods 735 not only restrict the movement direction of the sliding block 734, but also serve as a support structure for the positioning springs 736 and the positioning plate 737. The positioning springs 736 are fixedly mounted at equal intervals on the outer side of the limit rods 735. Their function is to provide elastic force to ensure that the positioning plate 737 can fit tightly against the solution bottle 8, while also accommodating solution bottles 8 of different sizes. The positioning plate 737 is a key component of the positioning assembly 73. It is fixedly mounted on the outer end of the positioning springs 736. When the sliding block 734 moves, the positioning plate 737 also moves accordingly, through the positioning springs 736. The elastic force of the spring 736 tightly clamps the solution bottle 8, thus stably positioning the solution bottle 8 between the positioning plate 737 and the inner side of the receiving groove 72, preventing it from shaking or tipping over. The positioning component 73 achieves precise and stable positioning of the solution bottle 8 on the top of the chromatograph body 2 through the drive of the second motor 732, the rotation of the second lead screw 733, the movement of the sliding block 734, and the elastic clamping action of the positioning spring 736 and the positioning plate 737. This design not only improves the overall stability of the device but also ensures the safety of the solution bottle 8 during use. At the same time, it can position multiple sets of solution bottles 8 at one time, which can improve the overall positioning effect of the device.

[0043] Please refer to Figure 7The positioning mechanism 7 includes a square groove 71, which is located on the top of the chromatograph body 2. Receiving grooves 72 are equally spaced on both sides of the square groove 71. The cross-sectional shape of the receiving grooves 72 is triangular. A positioning component 73 is fixedly installed at the rear end of the inner side of the square groove 71. The solution bottle 8 is positioned between the receiving groove 72 and the positioning component 73. The square groove 71, located on the top of the chromatograph body 2, provides an installation space for placing the solution bottle 8. The design of the square groove 71 allows the solution bottle 8 to be firmly placed on the chromatograph body 2, preventing movement or tipping during transportation or use. Multiple receiving grooves 72 are equally spaced on both sides of the square groove 71. These receiving grooves 72 have a triangular cross-sectional shape. This design not only increases the structural strength of the receiving grooves 72 but also allows the solution bottle 8 to be positioned more stably when inserted.

[0044] The implementation principle of the safety protection device for a liquid chromatograph according to this application embodiment is as follows: By setting a drive mechanism 4, the device can be operated by starting the first motor 42 during use. The first motor 42 drives the first lead screw 43 to rotate. The rotation of the first lead screw 43 drives the slide rod 44 to slide inside the bottom rail 41. The sliding of the slide rod 44 inside the bottom rail 41 assists in the forward and backward displacement of the slide rod 44 inside the bottom rail 41, so that the chromatograph body 2 can be quickly removed from the inside of the housing 1 during use. When it is necessary to disassemble the chromatograph body 2, the adjustment handle 528 of the pull-limit component 52 can be adjusted. At this time, the adjustment handle 528 pulls the connecting shaft 527, causing the limiting column 526 to move upward. The upward displacement of the limiting column 526 can pull the limiting column 526 out of the limiting groove 522. The limiting column 526 and the limiting groove 522 are separated from each other, and then... The chromatograph body 2 can be quickly removed from the base plate 51 by sliding it from the inside of the side rail 53. When it is necessary to install the chromatograph body 2, simply slide the slide plate 54 into the inside of the side rail 53. The slide plate 54 and the side rail 53 slide and engage with each other. At this time, the limiting spring 524 resets and abuts against the limiting block 525, which drives the limiting column 526 to be inserted into the inside of the limiting groove 522. The limiting column 526 and the limiting groove 522 limit each other to stably snap the chromatograph body 2 into place. This allows the chromatograph body 2 to be quickly snapped into place during use. In addition, the design of the support block 55 and the ball bearing 56 during use allows the ball bearing 56 at the bottom of the support block 55 to roll against the bottom of the box 1, which reduces the friction of the sliding rod 44 and makes the front and back sliding displacement of the chromatograph body 2 more stable, which is convenient for the use of this device.

[0045] By incorporating a buffer mechanism 6, the device can provide cushioning during use. When the housing 1 is placed on the ground or during transport, the buffer spring 631 at the bottom of the housing 1, in conjunction with the damper 633, assists in buffering the impact. The combination of the buffer spring 631 and damper 633, along with the hinged design of the hinged seat 62 and the rotating design of the wheels 64, ensures that the buffer spring 631 and damper 633 are effectively engaged in the action of vibrations when encountering bumps. This results in good stability for the device. Furthermore, when movement is required, the housing 1 can be adjusted to face the wheels 64. When tilted, the anti-slip support plate 632 at the bottom of the box 1 is pulled out and detached from the bottom of the box 1. At this time, the device can be moved by rolling on the ground via the wheels 64 after pulling out the box 1. This provides good cushioning and protection during the transportation process and facilitates flexible adjustment and movement. Throughout the transportation process, the chromatograph body 2 remains inside the box 1, which provides strong protection for the chromatograph body 2 and enhances the overall stability, thus maximizing the overall service life of the device.

[0046] By setting the positioning mechanism 7, the solution bottle 8 can be placed into the receiving groove 72 inside the square groove 71 during use. At this time, the second motor 732 is started, which drives the second lead screw 733 to rotate. The second lead screw 733 drives the sliding block 734 to slide inside the groove 731. The two ends of the second lead screw 733 have opposite threads. The rotation of the second lead screw 733 drives the sliding block 734 to slide back and forth stably inside the groove 731. The back and forth sliding of the sliding block 734 can flexibly adjust the relative displacement of the limiting rod 735. The relative displacement of the limiting rod 735 can flexibly adjust the reciprocating displacement of the two sets of positioning plates 737. The positioning plates 737 are in contact with the solution bottle 8, which can cause the solution bottle 8 to be squeezed into the receiving groove 72. The positioning plates 737 cooperate with the isosceles triangle The limiting setting of the receiving groove 72 can stably install the solution bottle 8. The solution bottle 8 is evenly arranged in two sets of receiving grooves 72 located on both sides of the square groove 71. The overall ability to fix the solution bottle 8 is three times that of the solution bottle 8 positioning in the prior art. The overall positioning of the solution bottle 8 has strong adaptability. At the same time, the isosceles triangular receiving groove 72, together with the reciprocating positioning plate 737, can flexibly adapt to solution bottles 8 of different diameters. It can prevent the solution bottle 8 from tipping over and has stronger overall adaptability. In addition, during the positioning process of the solution bottle 8, the positioning spring 736 can extend and retract to abut against the positioning plate 737, which can make it have strong stability. Its buffering capacity can prevent the solution bottle 8 from being damaged during the overall transportation of the device, which can improve the overall safety of use and make the whole device have strong protective performance.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid chromatograph safety protection device, comprising a box body (1) and a chromatograph body (2), characterized in that: The front end side of the box body (1) is hinged with the box door (3) installed, the inside lower end of the box body (1) is fixedly installed with the driving mechanism (4), the top of the driving mechanism (4) is fixedly installed with the mounting mechanism (5), the chromatograph body (2) is installed on the top of the driving mechanism (4) through the mounting mechanism (5), the bottom of the box body (1) is fixedly installed with the buffer mechanism (6), the top of the chromatograph body (2) is fixedly installed with the positioning mechanism (7), and the top of the chromatograph body (2) is installed with the solution bottle (8) through the positioning mechanism (7); The driving mechanism (4) comprises a bottom rail (41) and a first motor (42), the bottom rail (41) is fixedly installed in the middle of the inner bottom of the box body (1), the inside of the bottom rail (41) is rotatably connected with a first lead screw (43), the first motor (42) is fixedly installed at the middle of the lower end of the inner rear side of the box body (1), the output end of the first motor (42) is fixedly connected with the first lead screw (43), and the outer surface of the first lead screw (43) is threadedly connected with a sliding rod (44), and the top of the sliding rod (44) is fixedly connected with the bottom of the mounting mechanism (5).

2. The safety protection device for liquid chromatograph according to claim 1, characterized in that: The mounting mechanism (5) comprises a base plate (51) and a limiting assembly (52), the base plate (51) is fixedly installed on the top of the sliding rod (44), the top of the base plate (51) is fixedly installed with a side rail (53) on both sides, the inside of the side rail (53) is slidably connected with a sliding plate (54), the inner side of the sliding plate (54) is fixedly connected with the lower end of both sides of the chromatograph body (2), and the limiting assembly (52) is fixedly installed on the front lower end of the chromatograph body (2).

3. The safety protection device for liquid chromatograph according to claim 2, characterized in that: The bottom of the base plate (51) is fixedly installed with a supporting block (55) on both sides, the bottom of the supporting block (55) is rotatably connected with a ball (56), and the bottom of the ball (56) is attached to the inner bottom of the box body (1).

4. The safety protection device for liquid chromatograph according to claim 3, characterized in that: The limiting assembly (52) comprises a front plate (521) and a limiting groove (522), the front plate (521) is fixedly installed on the front lower end of the chromatograph body (2), the top of the front plate (521) is fixedly installed with a concave seat (523), the inner side of the concave seat (523) is fixedly installed with a limiting spring (524), the bottom of the limiting spring (524) is fixedly installed with a limiting block (525), the limiting groove (522) is formed in the top of the base plate (51), the bottom of the limiting block (525) is fixedly installed with a limiting column (526), and the bottom of the limiting column (526) is inserted into the inner side of the limiting groove (522).

5. The safety protection device for liquid chromatograph according to claim 4, characterized in that: The top of the limiting column (526) is fixedly installed with a connecting shaft (527), and the top of the connecting shaft (527) is fixedly installed with an adjusting handrail (528) penetrating through the concave seat (523).

6. The safety protection device for liquid chromatograph according to claim 1, characterized in that: The buffer mechanism (6) includes a support (61) and a hinge seat (62), the support (61) is fixedly installed on both ends of one side of the bottom of the case, the hinge seat (62) is fixedly installed on the other end of the bottom of the case, the bottom of the hinge seat (62) is hinged with a buffer assembly (63), and the inner side of the support (61) is rotatably connected with a walking wheel (64).

7. The safety protection device for liquid chromatograph according to claim 6, characterized in that: The buffer assembly (63) includes buffer springs (631), which are fixedly installed at equal intervals on the bottom of the hinge seat (62), and the bottom of the buffer spring (631) is fixedly installed with an anti-skid support plate (632).

8. The safety protection device for liquid chromatograph according to claim 7, characterized in that: The top of the anti-skid support plate (632) is fixedly installed with dampers (633) at equal intervals, the bottom of the anti-skid support plate (632) is fixedly connected with anti-skid convex points (65), and the buffer spring (631) is sleeved on the outer side of the damper (633).

9. The safety protection device for liquid chromatograph according to claim 1, characterized in that: The positioning mechanism (7) includes a square groove (71), which is provided on the top of the chromatograph body (2), and the square groove (71) is provided with accommodating grooves (72) at equal intervals on both sides, the cross section of the accommodating groove (72) is triangular, the inner side of the rear end of the square groove (71) is fixedly installed with a positioning assembly (73), and the solution bottle (8) is arranged between the accommodating groove (72) and the positioning assembly (73).

10. The safety protection device for liquid chromatograph according to claim 9, characterized in that: The positioning assembly (73) includes a sliding groove (731) and a second motor (732), the second motor (732) is fixedly installed on one side of the upper end of the chromatograph body (2), the sliding groove (731) is provided in the rear end of the square groove (71), the second motor (732) is fixedly connected with the output end of the second motor (732) and one end of the second screw rod (733), the screw threads of the two ends of the second screw rod (733) are opposite, the two ends of the second screw rod (733) are both threadedly connected with a sliding block (734), the front surface of the sliding block (734) is fixedly installed with a limiting rod (735), the outer side of the limiting rod (735) is fixedly installed with a positioning spring (736), the outer end of the positioning spring (736) is fixedly installed with a positioning plate (737), and the solution bottle (8) is arranged between the positioning plate (737) and the inner side of the accommodating groove (72).

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