Dustproof device of liquid chromatograph

Abstract

The utility model discloses a dustproof device for a liquid chromatograph, and belongs to the technical field of chromatographic instruments. Comprising a dustproof box, the dustproof box is provided with a cavity structure with a one-way opening, a cover plate is rotationally arranged at the opening of the cavity structure, a torsional spring is arranged at a rotating shaft of the cover plate and the cavity structure, a sliding groove is formed in the dustproof box, a motor is fixedly arranged on the dustproof box, and a first threaded rod is arranged at the output end of the motor in a power mode; one end of the first threaded rod extends into the sliding groove and is provided with a sliding block in a threaded mode, the sliding block is in sliding connection with the sliding groove, a mounting plate is arranged in the cavity structure in a sliding mode, the mounting plate is fixedly connected with the sliding block, a chromatograph is arranged on the mounting plate, and a power line is arranged on the chromatograph. According to the utility model, the cover plate can be opened and the chromatographic instrument can be moved out at the same time by starting the motor, so that collision and vibration caused by manual operation are reduced, abrasion and displacement of precise parts in the instrument can be effectively avoided, and the service life of the chromatographic instrument is prolonged.

Description

Technical Field

[0001] This utility model relates to a dust prevention device for a liquid chromatograph, belonging to the field of chromatography technology. Background Technology

[0002] A liquid chromatograph (LC) is an instrument that separates a mixture based on the difference in the partition ratio between a liquid and a solid, or between two immiscible liquids, and then analyzes and identifies the mixture. Currently, LCs are generally left unused after use. However, due to the abundance of dust particles in the air, dust easily adheres to the instrument's surface and penetrates its interior. Therefore, a dustproof box is needed to protect the chromatograph from dust. However, existing dustproof boxes require operators to manually open them and carefully remove the instrument from its storage location. Improper operation by the operator can easily damage the instrument and affect experimental efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a dustproof device for a liquid chromatograph, which solves the problem that existing liquid chromatographs are generally left in place after use, which easily leads to dust accumulation on the surface of the gas chromatography-mass spectrometer, and over time, this can affect the service life and accuracy of the gas chromatography-mass spectrometer.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution: A dustproof device for a liquid chromatograph includes a dustproof box, the dustproof box having a cavity structure with a one-way opening, a cover plate rotatably installed at the opening of the cavity structure, a torsion spring installed at the cover plate and the rotating shaft of the cavity structure, a sliding groove opened on the dustproof box, a motor fixedly installed on the dustproof box, a first threaded rod installed at the output end of the motor, one end of the first threaded rod extending into the interior of the sliding groove and threadedly installed with a sliding block, the sliding block being slidably connected to the sliding groove, a mounting plate slidably installed inside the cavity structure, the mounting plate and the sliding block being fixedly connected, a chromatograph being installed on the mounting plate, a power cord being installed on the chromatograph, and a clamping structure being installed on the mounting plate for limiting the position of the chromatograph.

[0005] By adopting the above technical solution, the starting motor drives the first threaded rod to rotate, and then the first threaded rod drives the sliding block to move in the sliding groove. Then the sliding block drives the mounting plate to move away from the cavity structure. Then the mounting plate moves the chromatograph to the outside of the dustproof box. During the movement, the mounting plate contacts the cover plate, thereby pushing the cover plate to open and realizing the removal of the chromatograph. By starting the motor, the cover plate can be opened and the chromatograph can be removed at the same time, reducing collisions and vibrations caused by manual operation. This can effectively avoid wear and displacement of precision parts inside the instrument, extend the service life of the chromatograph, and also facilitate the use of the staff and improve the convenience of the device. After the chromatograph is used, the starting motor can be reversed to move the chromatograph into the dustproof box. At the same time, the torsion spring resets and drives the cover plate to close the opening of the cavity structure, thus shielding the chromatograph from dust.

[0006] The present invention is further configured such that: a guide rail is provided on the inner wall of the cavity structure, and a guide strip is fixedly provided on the mounting plate, with the guide strip and the guide rail being slidably connected.

[0007] By adopting the above technical solution, when the mounting plate is moving, the guide bar slides in the guide rail to guide and limit the mounting plate, preventing the mounting plate from deviating during the movement and ensuring the stability of the device.

[0008] The present invention is further configured such that: the clamping structure includes two limiting plates fixedly connected to the mounting plate, and the two limiting plates are threaded with a second threaded rod. One end of the second threaded rod extends to the side of the limiting plate away from the chromatograph and is fixedly mounted with a rotating block. The other end of the second threaded rod extends to the side of the limiting plate away from the rotating block and is rotatably mounted with a fixing plate. The fixing plate is provided with a buffer component, which is used to protect the chromatograph.

[0009] The present invention is further configured such that: the buffer component includes a limiting groove formed on the fixed plate, a limiting block is slidably arranged inside the limiting groove, a spring is fixedly arranged between the limiting block and the limiting groove, one end of the limiting block extends to the outside of the limiting groove and is fixedly arranged with a clamping plate, and the chromatograph is located between the clamping plates and abuts against the clamping plates.

[0010] By adopting the above technical solution, the rotating block drives the second threaded rod to rotate, then the second threaded rod drives the fixed plate to move, and then the fixed plate drives the clamping plate to move. When the clamping plate comes into contact with the chromatograph, it will push the limiting block to slide in the limiting groove. During the sliding process, the limiting block compresses the spring. Through the compression and buffering of the spring, the clamping plate is prevented from damaging the chromatograph.

[0011] The present invention is further provided with a placement block fixedly installed on the dustproof box, the placement block having a placement groove, the placement groove being connected to the cavity structure and the outside of the dustproof box respectively, the placement groove being used to store the power cord, and the placement block having a sealing structure being provided to seal the placement groove.

[0012] The present invention is further configured such that: the sealing structure includes a sealing groove formed on the placement block and communicating with the placement groove, a sealing plate is slidably arranged inside the sealing groove, a locking block is provided on the sealing plate, a locking groove is formed inside the sealing groove, and the locking block is arranged inside the locking groove.

[0013] By adopting the above technical solution, when using the chromatograph, pulling the sealing plate causes it to separate the locking block from the slot, thus sealing the placement slot. At this time, the power cord can be removed and connected to an external power source to provide power to the chromatograph. After using the chromatograph, disconnect the power cord from the external power source, place it in the placement slot, and then push the sealing plate to connect the locking block to the slot, thereby sealing the placement slot and further preventing dust from entering, maintaining a clean environment inside the dustproof box.

[0014] The present invention is further provided with an observation window on the cover plate.

[0015] By adopting the above technical solution, the observation window allows staff to easily monitor the status of the chromatograph in real time.

[0016] The beneficial effects of this utility model are as follows: The starting motor drives the first threaded rod to rotate, which in turn drives the sliding block to move within the sliding groove. The sliding block then moves the mounting plate away from the cavity structure, and the mounting plate moves the chromatograph to the outside of the dustproof box. During this movement, the mounting plate contacts the cover plate, thus opening the cover plate and removing the chromatograph. The starting motor allows for simultaneous opening of the cover plate and removal of the chromatograph, reducing collisions and vibrations caused by manual operation. This effectively prevents wear and displacement of precision internal components, extends the chromatograph's lifespan, and facilitates operation, improving the device's convenience. After use, the starting motor reverses to move the chromatograph into the dustproof box. Simultaneously, the torsion spring resets the cover plate, sealing the opening of the cavity structure and protecting the chromatograph from dust. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3This is a three-dimensional schematic diagram of the chromatograph in this utility model;

[0020] Figure 4 In this utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a three-dimensional structural diagram of the sealing structure in this utility model.

[0022] In the diagram: 1. Dustproof box; 2. Cover plate; 3. Sliding groove; 4. Motor; 5. Sliding block; 8. Mounting plate; 9. Chromatograph; 10. Torsion spring; 101. Cavity structure; 401. First threaded rod; 901. Power cord; 1011. Guide rail; 1012. Guide strip; 1021. Limiting plate; 1022. Second threaded rod; 1023. Rotating block; 1024. Fixing plate; 1031. Limiting groove; 1032. Limiting block; 1034. Spring; 1035. Clamping plate; 1041. Placement block; 1042. Placement groove; 1051. Sealing groove; 1052. Sealing plate; 1053. Locking block; 1054. Locking slot; 1061. Observation window. Detailed Implementation

[0023] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0024] like Figures 1 to 3 As shown, a dustproof device for a liquid chromatograph includes a dustproof box 1. The dustproof box 1 has a one-way opening cavity structure 101. The cavity structure 101 is rotatably mounted at the opening of the cavity structure 101, and the cover plate 2 is used to close the opening of the cavity structure 101. A torsion spring 10 is provided at the rotation shaft of the cover plate 2 and the cavity structure 101. A sliding groove 3 is horizontally opened on the dustproof box 1. A motor 4 is fixedly mounted on the dustproof box 1. The output end of the motor 4 is powered by a first threaded rod 40. 1. One end of the first threaded rod 401 extends into the interior of the sliding groove 3 and is threaded with a sliding block 5. The sliding block 5 is slidably connected to the sliding groove 3 and slides back and forth along the opening direction of the sliding groove 3. The end of the first threaded rod 401 away from the motor 4 is rotatably connected to the sliding groove 3. An installation plate 8 is slidably installed inside the cavity structure 101. The sliding block 5 is fixedly installed with the installation plate 8. A chromatograph 9 is installed on the installation plate 8. A power cord 901 is installed on the chromatograph 9. A clamping structure is installed on the installation plate 8.

[0025] like Figure 5As shown, the inner wall of the cavity structure 101 is provided with a guide rail 1011 along the axial direction of the first threaded rod 401. A guide bar 1012 is fixedly provided on the side of the mounting plate 8 away from the chromatograph 9. The guide bar 1012 and the guide rail 1011 are slidably connected. The guide bar 1012 slides back and forth along the opening direction of the guide rail 1011.

[0026] like Figure 4 As shown, the clamping structure includes two limiting plates 1021 fixedly connected to the mounting plate 8. The two limiting plates 1021 are threaded with second threaded rods 1022. One end of the second threaded rod 1022 extends to the side of the limiting plate 1021 away from the chromatograph 9 and is fixedly mounted with a rotating block 1023. The other end of the second threaded rod 1022 extends to the side of the limiting plate 1021 away from the rotating block 1023 and is rotatably mounted with a fixing plate 1024. The fixing plate 1024 is slidably connected to the mounting plate 8 and is provided with a buffer component. The buffer component includes a limiting groove 1031 opened on the fixed plate 1024 along the axial direction of the second threaded rod 1022. A limiting block 1032 is slidably arranged inside the limiting groove 1031. The limiting block 1032 reciprocates along the opening direction of the limiting groove 1031. A spring 1034 is fixedly arranged between the limiting block 1032 and the limiting groove 1031. The elastic force direction of the spring 1034 is the same as the sliding direction of the limiting block 1032. One end of the limiting block 1032 away from the spring 1034 extends to the outside of the limiting groove 1031 and is fixedly arranged with a clamping plate 1035. The chromatograph 9 is located between the clamping plates 1035 and abuts against the clamping plates 1035.

[0027] like Figure 5 As shown, a placement block 1041 is fixedly installed on the dustproof box 1. A placement groove 1042 is opened on the placement block 1041. The placement groove 1042 is connected to the cavity structure 101 and the outside of the dustproof box 1. The placement groove 1042 is used to store the power cord 901. A sealing structure is provided on the placement block 1041. The sealing structure includes a sealing groove 1051 that is vertically opened on the placement block 1041 and communicates with the placement groove 1042. A sealing plate 1052 is slidably installed inside the sealing groove 1051. A handle is fixedly installed on the end of the sealing plate 1052 away from the placement groove 1042. A locking block 1053 is provided on the sealing plate 1052. A locking groove 1054 is opened inside the sealing groove 1051. The locking block 1053 is made of elastic material. The locking block 1053 is engaged with the locking groove 1054. The locking block 1053 is embedded in the inside of the locking groove 1054 by the movement of the sealing plate 1052.

[0028] like Figure 1 As shown, an observation window 1061 is provided on the cover plate 2, and the observation window 1061 is made of transparent material.

[0029] The starting motor 4 drives the first threaded rod 401 to rotate, and then the first threaded rod 401 drives the sliding block 5 to move within the sliding groove 3. Then, the sliding block 5 drives the mounting plate 8 to move away from the cavity structure 101. Then, the mounting plate 8 drives the chromatograph 9 to the outside of the dustproof box 1. During the movement, the mounting plate 8 contacts the cover plate 2, thereby pushing the cover plate 2 to open and remove the chromatograph 9. The starting motor 4 can open the cover plate 2 and remove the chromatograph 9 simultaneously, reducing collisions and vibrations caused by manual operation. This can effectively avoid wear and displacement of precision parts inside the instrument, extend the service life of the chromatograph 9, and also facilitate the use of the staff, improving the convenience of the device. After the chromatograph 9 is used, the starting motor 4 is reversed to move the chromatograph 9 into the dustproof box 1. At the same time, the torsion spring 10 resets and drives the cover plate 2 to close the opening of the cavity structure 101, thus protecting the chromatograph 9 from dust.

[0030] When the mounting plate 8 is moving, it slides within the guide rail 1011 via the guide bar 1012 to guide and limit the mounting plate 8, preventing it from shifting during movement and ensuring the stability of the device.

[0031] The rotating block 1023 drives the second threaded rod 1022 to rotate, and then the second threaded rod 1022 drives the fixed plate 1024 to move. Then the fixed plate 1024 drives the clamping plate 1035 to move. When the clamping plate 1035 contacts the chromatograph 9, it pushes the limiting block 1032 to slide in the limiting groove 1031. During the sliding process, the limiting block 1032 compresses the spring 1034. Through the compression buffer of the spring 1034, the clamping plate 1035 is prevented from damaging the chromatograph 9.

[0032] When using the chromatograph 9, by pulling the sealing plate 1052, the sealing plate 1052 causes the locking block 1053 to tend to separate from the slot 1054. At this time, the locking block 1053 deforms, and as the pulling force increases further, the locking block 1053 disengages from the slot 1054, thus sealing the removal slot 1042. At this time, the power cord 901 can be taken out and connected to an external power source to provide power to the chromatograph 9. After using the chromatograph 9, the power cord 901 is disconnected from the external power source and placed in the placement slot 1042. Then, the sealing plate 1052 is pushed to connect the locking block 1053 to the slot 1054, thereby sealing the placement slot 1042 with the sealing plate 1052, further preventing dust from entering and maintaining a clean environment inside the dustproof box 1.

[0033] The observation window 1061 allows staff to monitor the status of the chromatograph 9 in real time.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dustproof device for a liquid chromatograph, characterized in that: The system includes a dustproof box (1), which has a cavity structure (101) with a one-way opening. A cover plate (2) is rotatably mounted at the opening of the cavity structure (101). A torsion spring (10) is provided at the rotation axis of the cover plate (2) and the cavity structure (101). A sliding groove (3) is provided on the dustproof box (1). A motor (4) is fixedly mounted on the dustproof box (1). A first threaded rod (401) is provided at the output end of the motor (4). One end extends into the interior of the sliding groove (3) and is threaded with a sliding block (5). The sliding block (5) is slidably connected to the sliding groove (3). An mounting plate (8) is slidably disposed inside the cavity structure (101). The mounting plate (8) and the sliding block (5) are fixedly connected. A chromatograph (9) is disposed on the mounting plate (8). A power cord (901) is disposed on the chromatograph (9). A clamping structure is disposed on the mounting plate (8). The clamping structure is used to limit the position of the chromatograph (9).

2. The dustproof device for a liquid chromatograph according to claim 1, characterized in that: The inner wall of the cavity structure (101) is provided with a guide rail (1011), and a guide strip (1012) is fixedly provided on the mounting plate (8). The guide strip (1012) and the guide rail (1011) are slidably connected.

3. The dustproof device for a liquid chromatograph according to claim 1, characterized in that: The clamping structure includes two limiting plates (1021) fixedly connected to the mounting plate (8). The two limiting plates (1021) are threaded with second threaded rods (1022). One end of the second threaded rod (1022) extends to the side of the limiting plate (1021) away from the chromatograph (9) and is fixedly provided with a rotating block (1023). The other end of the second threaded rod (1022) extends to the side of the limiting plate (1021) away from the rotating block (1023) and is rotatably provided with a fixing plate (1024). The fixing plate (1024) is provided with a buffer component, which is used to protect the chromatograph (9).

4. The dustproof device for a liquid chromatograph according to claim 3, characterized in that: The buffer component includes a limiting groove (1031) formed on a fixed plate (1024), a limiting block (1032) is slidably arranged inside the limiting groove (1031), a spring (1034) is fixedly arranged between the limiting block (1032) and the limiting groove (1031), one end of the limiting block (1032) extends to the outside of the limiting groove (1031) and is fixedly arranged with a clamping plate (1035), and the chromatograph (9) is located between the clamping plates (1035) and abuts against the clamping plates (1035).

5. A dustproof device for a liquid chromatograph according to claim 1, characterized in that: A placement block (1041) is fixedly installed on the dustproof box (1). The placement block (1041) has a placement groove (1042). The placement groove (1042) is connected to the cavity structure (101) and the outside of the dustproof box (1). The placement groove (1042) is used to store the power cord (901). A sealing structure is provided on the placement block (1041). The sealing structure is used to seal the placement groove (1042).

6. A dustproof device for a liquid chromatograph according to claim 5, characterized in that: The sealing structure includes a sealing groove (1051) formed on the placement block (1041) and communicating with the placement slot (1042). A sealing plate (1052) is slidably disposed inside the sealing groove (1051). A locking block (1053) is provided on the sealing plate (1052). A locking groove (1054) is formed inside the sealing groove (1051). The locking block (1053) is disposed inside the locking groove (1054).

7. A dustproof device for a liquid chromatograph according to claim 1, characterized in that: An observation window (1061) is provided on the cover plate (2).

Images