Automatic sample introduction system of aerosol carbon analyzer
阅读说明：本技术 一种气溶胶碳分析仪的自动进样系统 (Automatic sample introduction system of aerosol carbon analyzer ) 是由 杨文� 白志鹏 王歆华 王静 耿春梅 殷宝辉 张宇 马银红 于 2020-08-17 设计创作，主要内容包括：本发明公开了一种气溶胶碳分析仪的自动进样系统,通过采用抓取模组来对样品进行抓取,并且采用第一滑动模组使抓取模组沿Y轴方向进行滑动,采用第二滑动模组使第一滑动模组沿X方向进行滑动,从而使得抓取模组在第一、第二滑动模组的带动下完成Y轴和X轴方向上的移动,进而能够完成对在线气溶胶有机碳元素样品的抓取和移动。本发明提供的气溶胶碳分析仪的自动进样系统,解决了现有技术中人工抓取样品而造成样品抓取效率低和样品易受污染的问题。(The invention discloses an automatic sample introduction system of an aerosol carbon analyzer, which adopts a grabbing module to grab a sample, adopts a first sliding module to enable the grabbing module to slide along the Y-axis direction, adopts a second sliding module to enable the first sliding module to slide along the X-axis direction, so that the grabbing module is driven by the first sliding module and the second sliding module to complete the movement of the Y-axis direction and the X-axis direction, and further can complete the grabbing and moving of an online aerosol organic carbon element sample. The automatic sampling system of the aerosol carbon analyzer solves the problems of low sample grabbing efficiency and easy pollution of samples caused by manual sample grabbing in the prior art.)
1. An autoinjection system of aerosol carbon analysis appearance which characterized in that includes: the device comprises a first sliding module, a second sliding module and a grabbing module for grabbing an online aerosol organic carbon element sample;
the first sliding module comprises a first servo motor, a first lead screw, a first guide rail and a first sliding block; the second sliding module comprises a second servo motor, a second lead screw, a second guide rail and a second sliding block; the first guide rail and the second guide rail are both provided with sliding grooves for sliding of the sliding blocks;
the first servo motor is connected with the first lead screw; the first lead screw is connected with the first sliding block and used for driving the first sliding block to slide in the first guide rail; the grabbing module is fixed on the first sliding block;
the second servo motor is connected with the second lead screw; the second lead screw is connected with the second sliding block and used for driving the second sliding block to slide in the second guide rail; the first sliding module is fixed on the second sliding block.
2. The autosampler system of aerosol carbon analyzer of claim 1, wherein said grasping module comprises: a push-pull electromagnet and an expansion sleeve;
the free end of the telescopic rod of the push-pull electromagnet is a frustum with a small upper part and a big lower part;
the fixed end of the expansion sleeve is connected with the shell of the push-pull electromagnet;
the free end of the expansion sleeve is an elastic body; the elastic body comprises a conical cavity and a grabbing part from top to bottom in sequence; the grasping portion includes a plurality of grasping claws; the plurality of grabbing claws are connected with the outer wall of the conical cavity;
the expansion sleeve is sleeved on the telescopic rod; the frustum is positioned in the conical cavity, and the size of the frustum is matched with that of the conical cavity; when the telescopic rod is contracted, the frustum is enabled to extrude the conical cavity, and the plurality of grabbing claws are driven to be opened; when the telescopic rod stretches out, the frustum is enabled not to extrude the conical cavity any more, and the grabbing claws are closed.
3. The autosampler system of an aerosol carbon analyzer according to claim 2, wherein said grasping module further comprises an elastic rubber ring;
the elastic rubber ring is sleeved outside the elastic body.
4. The autosampler system of an aerosol carbon analyzer according to claim 1, wherein said first sliding module further comprises a first servo motor driver; the first servo motor driver is electrically connected with the first servo motor;
the second sliding module also comprises a second servo motor driver; the second servo motor driver is electrically connected with the second servo motor.
5. The autosampler system for an aerosol carbon analyzer of claim 1, further comprising: a transformable expandable sample disk, a rotation axis, and a rotation drive;
the transformable and expandable sample tray is fixed on the rotating shaft;
and the rotary driver is connected with the rotary shaft and used for driving the transformable expandable sample disc to rotate according to a specific angle.
6. The autosampler system for an aerosol carbon analyzer of claim 4 or 5, wherein said system further comprises:
and the controller is respectively electrically connected with the first servo motor driver, the second servo motor driver, the grabbing module and the rotating driver and is used for respectively transmitting driving signals to the first servo motor driver, the second servo motor driver, the grabbing module and the rotating driver.
7. The autosampler system for an aerosol carbon analyzer of claim 5, wherein said rotary drive is a pneumatic drive or an electric drive.
8. The autosampler system for an aerosol carbon analyzer of claim 5, wherein said convertible expandable sample disk is a circular disk;
a plurality of sample containing grooves are uniformly arranged at the edge of the convertible and expandable sample tray in the circumferential direction.
9. The autosampler system of aerosol carbon analyzer, according to claim 8, wherein the number of sample holding grooves is 12, 18 or 24.
10. The autosampler system of an aerosol carbon analyzer according to claim 1, wherein said first slider and said second slider are both prismatic platforms with a first end face smaller than a second end face;
the sliding groove of the first guide rail is matched with the first sliding block;
the sliding groove of the second guide rail is matched with the second sliding block.
Technical Field
The invention relates to the technical field of sample grabbing, in particular to an automatic sampling system of an aerosol carbon analyzer.
Background
The increase of the concentration of particulate matters is a main internal factor generated in pollution processes such as dust haze and the like, under unfavorable meteorological conditions, the duration of regional heavy dust haze in China represented by PM2.5 pollution can be as long as 5-10 days, PM2.5 in a regional heavy pollution period can exceed the WHO (world health organization) guidance value by several times to ten times, and the continuous heavy pollution process also becomes a great threat to the air quality of urban environment, the atmospheric visibility and the body health of residents. Carbon is one of the elements mainly rich in the atmospheric particulates, and generally exists in the forms of Organic Carbon (OC), Elemental Carbon (EC), and the like, so that analysis of carbon element is one of the important means for detecting the concentration of the atmospheric particulates.
In the prior art, an online aerosol organic carbon element analyzer is generally adopted to realize segmentation and quantification of atmospheric particulate Organic Carbon (OC) and Elemental Carbon (EC). When a sample is added into a sample groove of the online aerosol organic carbon element analyzer, the sample is generally placed in the sample groove by hands, and the online aerosol organic carbon element sample is a round cake with small volume and thin thickness, so that the difficulty of grabbing by hands in the adding process is large, the time spent on adding the sample is long, and the problem of low sample adding efficiency is caused. In addition, due to factors such as sweat or carried objects on hands, the samples are polluted after being grabbed by hands, so that the online aerosol organic carbon element analyzer cannot accurately divide and quantify atmospheric particulate Organic Carbon (OC) and Elemental Carbon (EC).
Disclosure of Invention
The invention aims to provide an automatic sample introduction system of an aerosol carbon analyzer, which aims to solve the problems of low sample grasping efficiency and easy pollution of samples caused by manual sample grasping in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
an autosampler system for an aerosol carbon analyzer, comprising: the device comprises a first sliding module, a second sliding module and a grabbing module for grabbing an online aerosol organic carbon element sample;
the first sliding module comprises a first servo motor, a first lead screw, a first guide rail and a first sliding block; the second sliding module comprises a second servo motor, a second lead screw, a second guide rail and a second sliding block; the first guide rail and the second guide rail are both provided with sliding grooves for sliding of the sliding blocks;
the first servo motor is connected with the first lead screw; the first lead screw is connected with the first sliding block and used for driving the first sliding block to slide in the first guide rail; the grabbing module is fixed on the first sliding block;
the second servo motor is connected with the second lead screw; the second lead screw is connected with the second sliding block and used for driving the second sliding block to slide in the second guide rail; the first sliding module is fixed on the second sliding block.
Optionally, the grabbing module comprises: a push-pull electromagnet and an expansion sleeve;
the free end of the telescopic rod of the push-pull electromagnet is a frustum with a small upper part and a big lower part;
the fixed end of the expansion sleeve is connected with the shell of the push-pull electromagnet;
the free end of the expansion sleeve is an elastic body; the elastic body comprises a conical cavity and a grabbing part from top to bottom in sequence; the grasping portion includes a plurality of grasping claws; the plurality of grabbing claws are connected with the outer wall of the conical cavity;
the expansion sleeve is sleeved on the telescopic rod; the frustum is positioned in the conical cavity, and the size of the frustum is matched with that of the conical cavity; when the telescopic rod is contracted, the frustum is enabled to extrude the conical cavity, and the plurality of grabbing claws are driven to be opened; when the telescopic rod stretches out, the frustum is enabled not to extrude the conical cavity any more, and the grabbing claws are closed.
Optionally, the grabbing module further comprises an elastic rubber ring;
the elastic rubber ring is sleeved outside the elastic body.
Optionally, the first sliding module further includes a first servo motor driver; the first servo motor driver is electrically connected with the first servo motor;
the second sliding module also comprises a second servo motor driver; the second servo motor driver is electrically connected with the second servo motor.
Optionally, the system further includes: a transformable expandable sample disk, a rotation axis, and a rotation drive;
the transformable and expandable sample tray is fixed on the rotating shaft;
and the rotary driver is connected with the rotary shaft and used for driving the transformable expandable sample disc to rotate according to a specific angle.
Optionally, the system may further include:
and the controller is respectively electrically connected with the first servo motor driver, the second servo motor driver, the grabbing module and the rotating driver and is used for respectively transmitting driving signals to the first servo motor driver, the second servo motor driver, the grabbing module and the rotating driver.
Optionally, the rotary drive is a pneumatic drive or an electric drive.
Optionally, the transformable expandable sample disc is a circular disc;
a plurality of sample containing grooves are uniformly arranged at the edge of the convertible and expandable sample tray in the circumferential direction.
Optionally, the number of the sample holding grooves is 12, 18 or 24.
Optionally, the first sliding block and the second sliding block are both prismatic tables with first end surfaces smaller than second end surfaces;
the sliding groove of the first guide rail is matched with the first sliding block;
the sliding groove of the second guide rail is matched with the second sliding block.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the automatic sample introduction system of the aerosol carbon analyzer, the grabbing module is used for grabbing the online aerosol organic carbon element sample, then the first sliding module is used for enabling the grabbing module to slide along the Y-axis direction, the second sliding module is used for enabling the first sliding module to slide along the X-axis direction, so that the grabbing module is driven by the first sliding module and the second sliding module to complete the movement in the Y-axis direction and the X-axis direction, the grabbing and the movement of the online aerosol organic carbon element sample can be completed through the system, the defect that the sample is polluted due to manual grabbing of the sample can be avoided, and the sample grabbing efficiency can be further improved by the system for automatically grabbing the sample.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a front view of an autosampler system structure of an aerosol carbon analyzer provided in an embodiment of the present invention;
fig. 2 is a side view of an autosampler system configuration of an aerosol carbon analyzer provided in an embodiment of the present invention;
fig. 3 is a top view of an autosampler system structure of an aerosol carbon analyzer according to an embodiment of the present invention;
reference numerals:
11-a first servo motor, 12-a first guide rail, 121-a sliding groove on the first guide rail, 13-a first sliding block, 21-a second servo motor, 22-a second guide rail, 221-a sliding groove on the second guide rail, 23-a second sliding block, 31-a push-pull electromagnet, 32-an expansion sleeve, 33-an elastic rubber ring, 4-a convertible expandable sample disc, 41-a sample containing groove, 5-a rotating shaft, 6-an online aerosol organic carbon element sample, 7-a sample groove of an online aerosol organic carbon element analyzer and 8-a substrate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an automatic sample introduction system of an aerosol carbon analyzer, which aims to solve the problems of low sample grasping efficiency and easy pollution of samples caused by manual sample grasping in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 to 3 are a front view, a side view and a top view of an autosampler system structure of an aerosol carbon analyzer according to an embodiment of the present invention, and as shown in fig. 1 to 3, an autosampler system of an aerosol carbon analyzer includes: the device comprises a first sliding module, a second sliding module and a grabbing module for grabbing the online aerosol organic carbon element sample.
The first sliding module comprises a first servo motor 11, a first lead screw, a
The first servo motor 11 is connected with the first lead screw. The first lead screw is connected with the first sliding block 13, and the first lead screw is used for driving the first sliding block 13 to slide in the
The
The grabbing module in the system provided by the invention specifically comprises: a push-
The free end of the telescopic rod of the push-
The fixed end of the
The free end of the
The
In order to further enhance the elasticity of the gripping part of the
In order to facilitate driving of the first servo motor 11 and the
A second servomotor driver in the second slide module is electrically connected to the
In the system provided by the invention, in order to further improve the efficiency of sample grabbing, the system can also be provided with: a transformable expandable sample disk 4, a rotation axis 5, and a rotation drive.
The transformable expandable sample disk 4 is fixed on the rotation shaft 5.
The rotary driver (the rotary driver is a pneumatic driver or an electric driver) is connected with the rotating shaft 5 and is used for driving the transformable expandable sample disk 4 to rotate according to a specific angle.
Preferably, the transformable expandable sample disk 4 is a circular disk. A plurality of sample holding grooves 41 are uniformly arranged at the edge of the convertible and expandable sample tray 4 in the circumferential direction. When the number of the sample holding grooves on the sample-convertible expandable disk 4 is n, the specific angle α of the rotation of the sample-convertible expandable disk 4 driven by the rotary driver is 360 °/n. The number of the sample holding grooves 41 is preferably 12, 18 or 24.
The system provided by the invention also comprises: and the controller is used for respectively transmitting driving signals to the first servo motor 11 driver, the
In order to reduce the friction between the slider and the guide rail, it is preferable in the present invention that the first slider 13 and the second slider 23 are formed as a ridge having a first end surface smaller than a second end surface. And the sliding
In the practical application process, the automatic sample feeding system provided by the invention can be installed or placed according to the specific model of the practically adopted on-line aerosol organic carbon element analyzer. For convenience of installation or placement, the system provided by the present invention may further include a base plate 8 for fixing all components in the system to the base plate 8.
In addition, in order to facilitate the setting and input of control programs and control commands, the system provided by the invention can also comprise an upper computer. The upper computer is electrically connected with the controller so that an operator can edit the control instruction through the upper computer according to actual needs and then transmit the control instruction to the controller.
The working principle of the automatic sample feeding system of the aerosol carbon analyzer provided by the invention is as follows:
when the system is in a working state, the first sliding module drives the grabbing module to slide to a specific position along the positive direction of the Y axis, the second sliding module drives the first sliding module to slide to a specific position along the positive direction of the X axis, the grabbing module slides along the negative direction of the Y axis, and a sample closest to the position of the first sliding module on the convertible expandable sample tray 4 is grabbed. After grabbing the sample, the second slides the module and drives first slip module and slide to the specific position after along the X axle negative direction, first slip module drives and snatchs the module and move to the specific position along the Y axle negative direction, then it loosens the module and loosens the
In the practical application process, the grabbing work times of the whole system and the interval duration between the grabbing times can be set in the upper computer according to the detection requirement.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the automatic sample introduction system of the aerosol carbon analyzer, the grabbing module is used for grabbing the online aerosol organic carbon element sample, then the first sliding module is used for enabling the grabbing module to slide along the Y-axis direction, the second sliding module is used for enabling the first sliding module to slide along the X-axis direction, so that the grabbing module is driven by the first sliding module and the second sliding module to complete the movement in the Y-axis direction and the X-axis direction, the grabbing and the movement of the online aerosol organic carbon element sample can be completed through the system, the defect that the sample is polluted due to manual grabbing of the sample can be avoided, and the sample grabbing efficiency can be further improved by the system for automatically grabbing the sample.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
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