Automatic sample injector with novel driving structure

Abstract

The utility model relates to the technical field of automatic sample injectors, and discloses an automatic sample injector with a novel driving structure, which comprises a fixed bottom plate and a supporting bottom plate, a threaded block is assembled in the middle of the front end of the supporting bottom plate, and a first reserved hole is formed in a sample injection plate. The sample injector bases are installed on the two sides of the front end of the supporting bottom plate, the reserved grooves are formed in the sample injector bases, the protective cotton is fixed to the inner walls of the reserved grooves, and the sample injection plate and the sample injector bases are connected and installed through the connecting bolts. The forming positions of the first preformed holes correspond to the forming positions of the preformed grooves in a one-to-one mode, so that sample bottles to be detected can be inserted and placed through the first preformed holes, at the moment, the bottoms of the sample bottles are inserted to the positions of the preformed grooves, and the sample bottles are supported and protected by the protective cotton, so that the sample bottles have good anti-collision protection capacity after bottom supporting; in this way, in the working process, the travel safety is well improved, and the shaking phenomenon is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automatic sampler technology, specifically an automatic sampler with a novel drive structure. Background Technology

[0002] An autosampler is a device used to introduce a sample into a chromatographic column. It is mainly divided into two types: manual autosamplers and automatic autosamplers. An automatic autosampler is an intelligent, automated device; simply set the injection parameters and insert the sample to be tested, and the automatic injection process is completed. An automatic autosampler is one type of autosampler.

[0003] An autosampler is an intelligent and automated sample introduction instrument, mainly used to automatically deliver samples into analytical instruments for detection. It is widely used in fields such as gas chromatography and high-performance liquid chromatography. Generally speaking, an autosampler requires the sample to be tested to be placed into the autosampler for automatic feeding. If the feeding is unstable, it can directly affect the safety of sample injection. Utility Model Content

[0004] The purpose of this invention is to provide an autosampler with a novel driving structure to solve the problem mentioned in the background art that autosamplers generally require the sample to be tested to be placed in the autosampler before automatic feeding. If the feeding is unstable, it can directly affect the safety of sample feeding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic sampler with a novel driving structure, comprising a fixed base plate and a supporting base plate, wherein a threaded block is fitted at the middle position of the front end of the supporting base plate, and a threaded groove is formed in the threaded block; mounting seats are fitted at the upper and lower positions of the front end of the fixed base plate, and a threaded rod is fitted between the two mounting seats; sampler bases are installed at both sides of the front end of the supporting base plate; a sampler plate is provided at the front end of the sampler base; a connecting bolt is fitted between the sampler plate and the sampler base; a reserved groove is formed in the sampler base, and protective cotton is fixed to the inner wall of the reserved groove; and a first reserved hole is formed in the sampler plate.

[0006] As a further technical solution of this utility model, the sample injection plate is distributed in two sets at the front end of the sample injector base, and the connecting bolts are symmetrically distributed about the central axis of the sample injector base.

[0007] As a further technical solution of this utility model, a threaded connection is formed between the threaded rod and the threaded groove, and the mounting base is symmetrically distributed about the central axis of the threaded rod.

[0008] As a further technical solution of this utility model, sliders are fixed on both sides of the back of the supporting base plate, slide rails are fixed on both sides of the front end of the fixed base plate, a load-bearing plate is mounted on the upper part of a mounting base, and a servo motor is mounted on the front end of the load-bearing plate.

[0009] As a further technical solution of this utility model, the slide rail is symmetrically distributed about the central axis of the fixed base plate, and the slider is symmetrically distributed about the central axis of the supporting base plate, and the slide rail and the slider are adapted to each other to form a sliding connection.

[0010] As a further technical solution of this utility model, the first reserved hole is evenly distributed in the sample inlet plate, and the reserved groove is evenly distributed in the sampler base.

[0011] As a further technical solution of this utility model, mounting plates are fixed on both sides of the mounting base, and mounting holes are opened in the mounting plates.

[0012] As a further technical solution of this utility model, the mounting pieces are symmetrically distributed about the central axis of the mounting base and welded together, and mounting bolts are connected in the mounting holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the autosampler with a novel drive structure not only improves the safety of the operation, but also improves the driving effect and installation stability of the autosampler.

[0014] By installing the injector base on both sides of the front end of the support base plate, and after opening a reserved groove in the injector base, the protective cotton is fixed to the inner wall of the reserved groove. The connection between the injection plate and the injector base is completed by using connecting bolts. The opening position of the first reserved hole corresponds one-to-one with the opening position of the reserved groove. Therefore, the sample bottle to be tested can be inserted through the first reserved hole. At this time, the bottom is inserted to the position of the reserved groove and is supported and protected by the protective cotton. In this way, when moving the sample, it has a better anti-collision protection capability after bottom support, thus improving the safety of movement during operation and reducing shaking.

[0015] After the mounting base is installed, the servo motor can drive the threaded rod to rotate. Since the threaded block has a threaded groove, the threaded rod rotates and cooperates with the threaded groove to perform linear motion. This process is guided by the sliding rail and the slider, which improves the driving effect during operation and facilitates linear position movement.

[0016] By installing the mounting base at the upper and lower positions of the front end of the fixed base plate, the threaded rod is assembled between the mounting base and the mounting pieces are fixed on both sides of the mounting base. After the mounting pieces are drilled with mounting holes, the mounting bolts are used to complete the connection and assembly between the mounting base and the fixed base plate through the mounting holes, thereby improving the overall installation stability during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a partial bottom view of the structure of this utility model;

[0019] Figure 3 This is a bottom view of the mounting base structure of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged cross-sectional view of point A in the middle.

[0021] In the diagram: 1. Fixed base plate; 2. Slide rail; 3. Mounting seat; 4. Threaded rod; 5. Support base plate; 6. Sample inlet plate; 7. First reserved hole; 8. Servo motor; 9. Load-bearing plate; 10. Threaded groove; 11. Slider; 12. Threaded block; 13. Sampler base; 14. Reserved groove; 15. Connecting bolt; 16. Mounting piece; 17. Mounting bolt; 18. Protective cotton. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 An embodiment of this utility model provides an automatic sampler with a novel driving structure, comprising a fixed base plate 1 and a supporting base plate 5. A threaded block 12 is mounted at the middle position of the front end of the supporting base plate 5, and a threaded groove 10 is formed in the threaded block 12. Mounting seats 3 are mounted at the upper and lower positions of the front end of the fixed base plate 1, and a threaded rod 4 is mounted between the two mounting seats 3. Sampler bases 13 are mounted on both sides of the front end of the supporting base plate 5. A sampler plate 6 is provided at the front end of the sampler base 13. A connecting bolt 15 is mounted between the sampler plate 6 and the sampler base 13. A reserved groove 14 is formed in the sampler base 13, and a protective cotton 18 is fixed to the inner wall of the reserved groove 14. A first reserved hole 7 is formed in the sampler plate 6.

[0024] Two sets of injection plates 6 are distributed at the front end of the injector base 13, and the connecting bolts 15 are symmetrically distributed about the central axis of the injector base 13.

[0025] A threaded connection is formed between the threaded rod 4 and the threaded groove 10, and the mounting base 3 is symmetrically distributed about the central axis of the threaded rod 4.

[0026] Slider 11 is fixed on both sides of the back of the support base plate 5, slide rail 2 is fixed on both sides of the front end of the fixed base plate 1, a load-bearing plate 9 is mounted on the top of a mounting base 3, and a servo motor 8 is mounted on the front end of the load-bearing plate 9.

[0027] The slide rails 2 are symmetrically distributed about the central axis of the fixed base plate 1, and the sliders 11 are symmetrically distributed about the central axis of the supporting base plate 5. The slide rails 2 and the sliders 11 are adapted to each other to form a sliding connection.

[0028] The first reserved hole 7 is evenly distributed in the sample inlet plate 6, and the reserved groove 14 is evenly distributed in the sampler base 13.

[0029] Mounting plates 16 are fixed on both sides of the mounting base 3, and mounting holes are provided in the mounting plates 16.

[0030] Mounting pieces 16 are symmetrically distributed about the central axis of mounting base 3 and welded together, with mounting bolts 17 connected inside the mounting holes;

[0031] The threaded rod 4 is further assembled between the mounting bases 3, and the output end of the servo motor 8 is connected and assembled with the threaded rod 4, so that the servo motor 8 works to drive the threaded rod 4 to rotate.

[0032] Working principle: First, during operation, the mounting base 3 is installed at the upper and lower positions of the front end of the fixed base plate 1. The threaded rod 4 is assembled between the mounting base 3. Mounting plates 16 are fixed on both sides of the mounting base 3. After the mounting holes are opened in the mounting plates 16, the mounting bolts 17 are used to complete the connection and assembly between the mounting base 3 and the fixed base plate 1 through the mounting holes. The connecting bolts 15 are used to complete the connection and installation between the injection plate 6 and the injector base 13. The opening position of the first reserved hole 7 corresponds one-to-one with the opening position of the reserved groove 14. Therefore, the sample bottle to be tested can be inserted through the first reserved hole 7. At this time, the bottom is inserted to the position of the reserved groove 14 and is supported and protected by the protective cotton 18. Then, the servo motor 8 is started to drive the threaded rod 4 to rotate. After the threaded rod 4 rotates, it cooperates with the threaded groove 10 to perform linear movement. This process is guided by the sliding rail 2 and the slider 11 to complete the sample injection work.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. An autosampler with a new type of drive structure, comprising a fixed base plate (1), a supporting base plate (5), characterized in that: The middle position of the front end of the supporting bottom plate (5) is equipped with a threaded block (12), a threaded groove (10) is opened in the threaded block (12), the upper and lower positions of the front end of the fixed bottom plate (1) are equipped with mounting seats (3), a threaded rod (4) is equipped between the two mounting seats (3), sample feeder bases (13) are installed on both sides of the front end of the supporting bottom plate (5), sample plates (6) are arranged at the front end positions of the sample feeder bases (13), connecting pins (15) are equipped between the sample plates (6) and the sample feeder bases (13), the sample feeder bases (13) are opened with reserved grooves (14), the inner walls of the reserved grooves (14) are fixed with protective cottons (18), and the sample plates (6) are opened with first reserved holes (7).

2. The auto-sampler with a novel drive structure according to claim 1, characterized in that: The sample plates (6) are symmetrically distributed at the front end positions of the sample feeder bases (13) about the central axes of the sample feeder bases (13).

3. The auto-sampler with a novel drive structure according to claim 1, characterized in that: The threaded rod (4) and the threaded groove (10) are in threaded connection, and the mounting seats (3) are symmetrically distributed about the central axis of the threaded rod (4).

4. The auto-sampler with a novel drive structure according to claim 1, characterized in that: The back of the supporting bottom plate (5) is fixed with sliding blocks (11), the front end of the fixed bottom plate (1) is fixed with sliding rails (2), and the upper position of one mounting seat (3) is equipped with a bearing plate (9).

5. The auto-sampler with a novel drive structure according to claim 4, characterized in that: The sliding rails (2) are symmetrically distributed about the central axis of the fixed bottom plate (1), the sliding blocks (11) are symmetrically distributed about the central axis of the supporting bottom plate (5), and the sliding rails (2) and the sliding blocks (11) are adapted to each other to form sliding connection.

6. The auto-sampler with a novel drive structure according to claim 1, characterized in that: The first reserved holes (7) are uniformly distributed in the sample plates (6), and the reserved grooves (14) are uniformly distributed in the sample feeder bases (13).

7. The automatic sampler with a novel drive structure according to claim 1, characterized in that: The mounting seats (3) are fixed with mounting pieces (16) at the two sides, and the mounting pieces (16) are opened with mounting holes.

8. The auto-sampler with a novel drive structure according to claim 7, characterized in that: The mounting pieces (16) are symmetrically distributed about the central axis of the mounting seat (3) and are welded to be connected, and the mounting holes are connected with mounting pins (17).

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