Sampling device for environmental analysis

Abstract

The utility model discloses a sampling device for environmental analysis, which comprises an injector support, an injector motor supporting side, an injector motor fixing side, an injector, a ball screw and a second motor, a movable groove is arranged on the surface of the injector motor supporting side, the injector motor supporting side is arranged at the middle section of the front end of the injector support, and the ball screw is arranged in the movable groove. The injector motor fixing side is installed at the bottom of the front end of the injector support, the ball screw is installed between the injector motor supporting side and the injector motor fixing side, a driven wheel is arranged at the bottom of the ball screw, a driving wheel is arranged at the bottom of the second motor, the surface of the ball screw is sleeved with a sliding block, an induction piece is installed at the right end of the sliding block, and a needle tube connecting column is arranged at the rear end of the sliding block. And one end of the injector is mounted on the needle tube connecting column. According to the device, the sampling stability, accuracy and operation efficiency are improved, the motor and the sensor can be controlled through a program, the throughput capacity of the injector and the channel flow direction of the multi-channel switching valve can be controlled in time, and the experiment result is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental analysis, in particular to a sampling device for environmental analysis. Background Art

[0002] "Environmental analysis" refers to the use of appropriate statistical methods to study acquired environmental data, such as pollutant monitoring data, sample testing data, environmental statistical data, etc., to analyze the inherent patterns among environmental data, thereby discovering environmental problems and providing a basis for decision-making in environmental protection work. Environmental analysis is an important part of environmental investigation.

[0003] Existing environmental analysis equipment has the following defects:

[0004] Existing sampling devices for environmental analysis are difficult to operate, time-consuming, and inefficient; they suffer from insufficient control precision and a high failure rate; and they have a low number of channels and low syringe capacity. Therefore, a solution is needed. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present invention provides a sampling device for environmental analysis to solve the problems raised in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sampling device for environmental analysis, comprising a syringe bracket, a syringe motor supporting side, a syringe motor fixed side, a syringe, a ball screw and a second motor, the surface of the syringe motor supporting side is provided with a movable groove, the syringe motor supporting side is installed in the middle section of the front end of the syringe bracket, the syringe motor fixed side is installed at the bottom of the front end of the syringe bracket, the ball screw is installed between the syringe motor supporting side and the syringe motor fixed side, a driven wheel is provided at the bottom of the ball screw, a driving wheel is provided at the bottom of the second motor, the driving wheel is connected to the driven wheel by a chain, and an inductive limit switch is provided on the right side of the bottom front end of the syringe bracket; a slider is sleeved on the surface of the ball screw, the slider is a rectangular structure, an inductive sheet is installed at the right end of the slider, a needle tube connecting column is provided at the rear end of the slider, the needle tube connecting column is located in the movable groove, and one end of the syringe is installed on the needle tube connecting column.

[0009] Preferably, a second grating connector is provided on the top of the ball screw, a small circular grating is installed on the bottom of the second grating connector, and a third photoelectric sensor is provided on the top of the syringe motor support side, and the third photoelectric sensor is located on the side of the small circular grating.

[0010] Preferably, a sliding rod is provided between the supporting side of the syringe motor and the fixed side of the syringe motor, the sliding rod is a cylindrical structure, and the sliding rod is inserted through the slider.

[0011] Preferably, a multi-channel switching valve is provided at the top of the rear end of the syringe bracket, a first motor is installed at the top of the front end of the syringe bracket, two groups of motor support columns distributed in a symmetrical manner are provided at the installation place of the first motor, the first motor driving end is connected to the multi-channel switching valve, the first motor driving end is provided with a grating connector 1, a circular grating is provided on the grating connector 1, a photoelectric sensor 1 is installed on the left side of the top of the front end of the syringe bracket, and a photoelectric sensor 2 is provided at the top of the front end of the syringe bracket.

[0012] (3) Beneficial effects

[0013] The utility model provides a sampling device for environmental analysis, which has the following beneficial effects:

[0014] This type of environmental analysis sampling device is driven by a mechanical structure, which improves the stability, accuracy and efficiency of sampling. The motor and sensor can be controlled by a program to timely control the syringe throughput capacity and the flow direction of the multi-channel switching valve to accurately obtain experimental results. The multi-channel switching valve in this device allows liquids to be drawn into the syringe, such as hot or cold water, methanol and water in the sample bottle. This valve can be used to select the liquid to be distributed in the syringe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic structural diagram of the right side of the entire utility model;

[0017] Figure 3 It is a structural diagram of the left side of the entire utility model.

[0018] In the figure, 1. syringe bracket; 2. syringe motor support side; 3. syringe motor fixed side; 4. driving wheel; 5. driven wheel; 6. multi-channel switching valve; 7. syringe; 8. needle tube connecting column; 9. motor supporting column; 10. large circular grating; 11. photoelectric sensor 1; 12. grating connecting part 1; 13. grating connecting part 2; 14. small circular grating; 15. ball screw; 16. photoelectric sensor 2; 17. first motor; 18. photoelectric sensor 3; 19. slide bar; 20. slide block; 21. second motor; 22. induction plate; 23. induction limit switch; 24. movable slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 , the embodiment of the utility model provides a technical solution: a sampling device for environmental analysis, comprising a syringe bracket 1, a syringe motor supporting side 2, a syringe motor fixed side 3, a syringe 7, a ball screw 15 and a second motor 21, wherein a movable groove 24 is opened on the surface of the syringe motor supporting side 2, the syringe motor supporting side 2 is installed in the middle section of the front end of the syringe bracket 1, the syringe motor fixed side 3 is installed at the bottom of the front end of the syringe bracket 1, the ball screw 15 is installed between the syringe motor supporting side 2 and the syringe motor fixed side 3, a driven wheel 5 is provided at the bottom of the ball screw 15, a driving wheel 4 is provided at the bottom of the second motor 21, the driving wheel 4 is connected to the driven wheel 5 by a chain, and an inductive limit switch 23 is provided on the right side of the bottom front end of the syringe bracket 1; the inductive limit switch 23 is used to control the forward and backward movement distance of the syringe 7 push rod; the photoelectric sensor 18 is used to confirm the number of motor steps to prevent the inductive limit switch 23 from malfunctioning and damaging the syringe 7 and the multi-channel switching valve 6.

[0021] The problem is solved. A slider 20 is sleeved on the surface of the ball screw 15. The slider 20 is a rectangular structure. An induction plate 22 is installed at the right end of the slider 20. A needle tube connecting column 8 is provided at the rear end of the slider 20. The needle tube connecting column 8 is located in the movable groove 24. One end of the syringe 7 is installed on the needle tube connecting column 8. The second motor 21 (power device) drives the driven wheel 5 to rotate through the driving wheel 21 and the chain, and transmits the information to the ball screw 15 through the driven wheel 5. The ball screw 15 drives the slider 20 to move up and down, so that the slider 20 drives the syringe 7 push rod to draw liquid and inject.

[0022] Furthermore, a grating connector 2 13 is provided on the top of the ball screw 15, a circular grating 14 is installed on the bottom of the grating connector 2 13, a photoelectric sensor 3 18 is provided on the top of the syringe motor support side, and the photoelectric sensor 3 18 is located on the side of the circular grating 14. The circular grating 14 is installed on the tail of the ball screw 15 by the grating connector 2 13, and the number of screw rotation steps is detected by the photoelectric sensor 3 18.

[0023] Differently, a slide rod 19 is provided between the syringe motor support side 2 and the syringe motor fixed side 3. The slide rod 19 has a cylindrical structure and passes through the slider 20. The slide rod 19 is used to limit the slider 20 and is used in conjunction with the ball screw 15.

[0024] Effectively, a multi-channel switching valve 6 is provided at the top of the rear end of the syringe bracket 1, and a first motor 17 is installed at the top of the front end of the syringe bracket 1. Two groups of motor support columns 9 distributed in a symmetrical manner are provided at the installation place of the first motor 17. The driving end of the first motor 17 is connected to the multi-channel switching valve 6. The driving end of the first motor 17 is provided with a grating connector 12, and a circular grating 10 is provided on the grating connector 12. A photoelectric sensor 11 is installed on the left side of the top of the front end of the syringe bracket 1, and a photoelectric sensor 2 16 is provided at the top of the front end of the syringe bracket 1. The first motor 17 (power device) drives the multi-channel switching valve 6 to rotate, and the circular grating 10 is detected by the photoelectric sensor 11 and the photoelectric sensor 2 16 to determine the origin of the multi-channel switching valve 6 and the number of rotation steps of the first motor 17, so as to prevent the multi-channel switching valve 6 from not rotating into place and causing the circuit with the syringe 7 to be blocked.

[0025] Working principle: During operation, the first motor 17 (power device) drives the multi-channel switching valve 6 to rotate, and the photoelectric sensor 1 11 and the photoelectric sensor 2 16 detect the circular grating 10 to determine the origin of the multi-channel switching valve 6 and the number of rotation steps of the first motor 17 to prevent the multi-channel switching valve 6 from not rotating into place and causing the circuit with the syringe 7 to be blocked. The second motor 21 (power device) drives the driven wheel 5 to rotate through the driving wheel 21 and the chain, and transmits the information to the ball screw 15 through the driven wheel 5. The ball screw 15 drives the slider 20 to move up and down, so that the slider 20 drives the syringe 7 push rod to draw liquid and inject. The induction limit switch 23 is used to control the forward and backward movement distance of the syringe 7 push rod; the photoelectric sensor 3 18 is used to confirm the number of motor steps to prevent the induction limit switch 23 from malfunctioning and damaging the syringe 7 and the multi-channel switching valve 6. By controlling the motor and sensor through the program, the throughput capacity of the syringe 7 and the flow direction of the multi-channel switching valve 6 can be controlled in time to accurately obtain the experimental results.

[0026] The utility model comprises: 1, syringe bracket; 2, syringe motor support side; 3, syringe motor fixed side; 4, driving wheel; 5, driven wheel; 6, multi-channel switching valve; 7, syringe; 8, needle tube connecting column; 9, motor supporting column; 10, circular grating large; 11, photoelectric sensor 1; 12, grating connecting piece 1; 13, grating connecting piece 2; 14, circular grating small; 15, ball screw; 16, photoelectric sensor 2; 17, first motor; 18, photoelectric sensor 3; 19, slide bar; 20, slide block; 21, second motor; 22, induction plate; 23, induction limit switch; 24, movable slot, and all the components are They are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. The problems solved by the utility model are that the existing sampling devices for environmental analysis are difficult to operate, consume experimental time, and have low experimental efficiency; the control accuracy is insufficient, the failure rate is high; the number of channels is low, and the syringe capacity is low. The utility model can improve the stability, accuracy and operating efficiency of sampling by combining the above parts, and can control the motor and sensor through a program, and can timely control the syringe throughput capacity and the flow direction of the multi-channel switching valve path to accurately obtain experimental results.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A sampling device for environmental analysis, characterized in that: The invention comprises a syringe support (1), a syringe motor support side (2), a syringe motor fixed side (3), a syringe (7), a ball screw (15) and a second motor (21), wherein a movable groove (24) is provided on the surface of the syringe motor support side (2), the syringe motor support side (2) is mounted on the middle section of the front end of the syringe support (1), the syringe motor fixed side (3) is mounted on the bottom of the front end of the syringe support (1), the ball screw (15) is mounted between the syringe motor support side (2) and the syringe motor fixed side (3), a driven wheel (5) is provided at the bottom of the ball screw (15), a driving wheel (4) is provided at the bottom of the second motor (21), the driving wheel (4) is connected to the driven wheel (5) through a chain, and an inductive limit switch (23) is provided on the right side of the bottom front end of the syringe support (1); The surface of the ball screw (15) is sleeved with a slider (20), the slider (20) is in a rectangular structure, the right end of the slider (20) is mounted with a sensor (22), the rear end of the slider (20) is provided with a needle tube connecting column (8), the needle tube connecting column (8) is located in the movable groove (24), and one end of the syringe (7) is mounted on the needle tube connecting column (8).

2. The environmental analysis sampling device according to claim 1, characterized in that: A second grating connector (13) is provided on the top of the ball screw (15), a small circular grating (14) is installed on the bottom of the second grating connector (13), and a third photoelectric sensor (18) is provided on the top of the syringe motor support side, and the third photoelectric sensor (18) is located on the side of the small circular grating (14).

3. The sampling device for environmental analysis according to claim 1, characterized in that: A slide bar (19) is provided between the syringe motor support side (2) and the syringe motor fixed side (3), wherein the slide bar (19) is a cylindrical structure and is inserted through the slider (20).

4. The sampling device for environmental analysis according to claim 1, characterized in that: A multi-channel switching valve (6) is provided at the top of the rear end of the syringe bracket (1), a first motor (17) is installed at the top of the front end of the syringe bracket (1), two groups of motor support columns (9) distributed in a symmetrical manner are provided at the installation position of the first motor (17), the driving end of the first motor (17) is connected to the multi-channel switching valve (6), the driving end of the first motor (17) is provided with a grating connector (12), and a circular grating (10) is provided on the grating connector (12), a photoelectric sensor (11) is installed on the left side of the top of the front end of the syringe bracket (1), and a photoelectric sensor (16) is provided at the top of the front end of the syringe bracket (1).

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