Automatic sampling device of salinity meter

Abstract

The utility model belongs to the field of laboratory analytical instrument combined equipment, and particularly relates to an automatic sampling device of a salinity meter, which comprises a base, an electric control module, a touch screen connected with the electric control module, a three-axis coordinate module, a sample tray, a cleaning module and a sampling module, the three-axis coordinate module is installed on the machine base, and a sample injection module is arranged on the three-axis coordinate module; the sample injection module is connected with the cleaning module so as to realize active cleaning of the sample injection module; the cleaning module is arranged on one side of the three-axis coordinate module and does not move along with the three-axis coordinate module; the cleaning module is arranged at the initial position of the sample injection module, so that the sample injection module is inserted into the cleaning module to complete passive cleaning; the sample disc tray is arranged on the three-axis coordinate module in a sliding mode and located below the sample injection module, and a plurality of sample bottles are longitudinally placed in the sample disc tray so that the sample injection module can detect the salinity of the sample bottles. The automatic sampling device can automatically suck a sample, can be automatically cleaned and can be matched with a salinometer to realize continuous sampling.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of laboratory analysis instrument combination equipment, specifically a kind of automatic sampling device of salinity meter. BACKGROUND

[0002] The existing salinity meter needs to manually place sample bottle on the sample bottle fixer of salinity meter for sample feeding in analysis test, and the fixer can only place one sample each time, so the fixed support on the sample bottle fixer must be manually disassembled to replace sample bottle, which is complicated and inefficient, and the liquid suction pipeline on the salinity meter is soft pipe with low rigidity, which cannot be inserted into the bottom of sample bottle.For laboratory sample pretreatment personnel, an automatic sampling device with simple operation, reliable sample feeding and no cross contamination can effectively improve the analysis and detection efficiency. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a kind of automatic sampling device of salinity meter, which can place more than 40 100ml sample bottles, automatically suck sample, automatically clean and realize continuous sample feeding with salinity meter, to solve the technical problems of existing salinity meter sample position only one sample bottle, each sample needs to manually replace cleaning fluid and manually insert sample suction tube.

[0004] The utility model discloses a kind of automatic sampling device of salinity meter, including: base, electric control module and with its connection touch screen, three-axis coordinate module, sample disc tray, cleaning module and sample feeding module;

[0005] The three-axis coordinate module is installed on the base, and the sample feeding module is provided on the three-axis coordinate module;The sample feeding module is connected with the cleaning module to realize the active cleaning of the sample feeding module;

[0006] The cleaning module is arranged on one side of the three-axis coordinate module and does not move with the three-axis coordinate module;And the cleaning module is arranged at the initial position of the sample feeding module to realize the passive cleaning of the sample feeding module inserted into the cleaning module;

[0007] The sample disc tray is slidably arranged on the three-axis coordinate module and located below the sample feeding module, and a plurality of sample bottles are longitudinally arranged in the sample disc tray to realize the salinity detection of the sample feeding module to the sample bottles in the sample disc tray.

[0008] The three-axis coordinate module includes X-axis translation mechanism, Y-axis translation mechanism and Z-axis linear motion mechanism connected with the electric control module by driving motor;

[0009] The X-axis translation mechanism is double-rail structure, and the sample disc tray is fixed on the slider on the guide rail on the opposite sides.

[0010] The Y-axis translation mechanism is erected on the supports on both sides of the base, and the X-axis translation mechanism drives the sample disc tray to pass through the bottom of the Y-axis translation mechanism;

[0011] A Z-axis linear motion mechanism is slidably arranged on the Y-axis translation mechanism, and a sample injection module is fixed on the slider of the Z-axis linear motion mechanism to realize the transverse insertion of the sample injection module into the sample bottles in the sample disc tray.

[0012] The sample injection module comprises a sample injection needle, a sample injection needle pipeline, a sample injection tube, a salinity meter and a switching valve.

[0013] The sample injection needle is vertically installed on the slider of the Z-axis linear motion mechanism of the three-axis coordinate module, and the sample injection needle is connected with the sample injection tube through the sample injection needle pipeline, and the sample injection tube is connected with the salinity meter to realize the detection of the sample salinity in the sample injection tube.

[0014] The salinity meter is connected with the switching valve through a conduit, and the salinity meter is also connected with an electric control module to transmit the sample salinity data to the electric control module.

[0015] The switching valve is fixed on the shell of a cleaning module, and is connected with the electric control module and the cleaning module respectively to realize the switching of the salinity meter and the cleaning module pipeline and complete the active cleaning.

[0016] The cleaning module comprises a cleaning pump, a cleaning tank and a waste pump.

[0017] The cleaning pump and the waste pump are arranged on one side of the base, a switching valve is arranged above the shell of the cleaning pump and is connected with the switching valve.

[0018] The cleaning pump is connected with the liquid inlet of the cleaning tank, and the bottom of the cleaning tank is connected with the waste pump through a waste outlet.

[0019] The cleaning pump and the waste pump are connected with the electric control module to be controlled to be opened or closed by the electric control module.

[0020] The cleaning tank is a hollow cylindrical structure and is arranged at the movement starting end of the Y-axis translation mechanism and coaxially arranged with the sample injection needle of the sample injection module at the movement starting end of the Y-axis translation mechanism.

[0021] A baffle is arranged at the center axis of the sample disc tray, the baffle is parallel to the forward direction of the sample disc tray, and different sample discs are placed on both sides of the baffle to realize the compatible placement of various sample bottle specifications.

[0022] The sample disc is arranged in a square grid array, and each row of grid holes is parallel to the Y-axis translation mechanism to prevent the sample injection needle from being inserted into the sample bottle in the grid hole.

[0023] The machine body is mounted on the base. The electronic control module, three-axis coordinate module, sample tray, cleaning module and sample injection module are all located inside the machine body. The touch screen is embedded in the machine body to control the automatic sample injection device.

[0024] The body is a transparent shell structure; the base is a flat tray made of corrosion-resistant stainless steel.

[0025] This utility model has the following beneficial effects and advantages:

[0026] This invention can automatically aspirate samples and automatically clean them. It can be used with a salinity meter to achieve continuous sample injection, solving the technical problems of existing salinity meters where only one sample bottle can be placed in the sample position, the need to manually change the cleaning solution between each sample, and the complicated and inefficient operation of manually inserting the sample tube. Attached Figure Description

[0027] Fig. 1 A schematic diagram of the structure of this utility model with the outer casing removed;

[0028] Fig. 2 The left view of this utility model with the outer casing removed;

[0029] Fig. 3 A top view of the device without its outer casing;

[0030] Among them, 1 is the switching valve, 2 is the cleaning pump, 3 is the Y-axis translation mechanism, 4 is the sample tray, 5 is the electrical control module, 6 is the X-axis translation mechanism, 7 is the Z-axis linear motion mechanism, and 8 is the cleaning tank. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] This invention relates to an automatic sample introduction device for analytical instruments used in measuring salinity in water. It utilizes triaxial positioning to locate each sample point, and a sample needle is used to draw the sample in. A pump module and a dedicated cleaning tank are used to clean the sample needle, preventing cross-contamination. Using this device enables continuous automatic sample introduction by the salinity meter, significantly improving analytical testing efficiency. It also allows for unattended operation.

[0033] like Figs. 1-3 The diagram shown is a schematic of the present invention with the outer casing removed. The present invention is an automatic sample feeding device for a salinity meter, comprising: a base, an electrical control module 5 and a touch screen, a three-axis coordinate module, a sample tray 4, a cleaning module and a sample feeding module connected thereto.

[0034] The three-axis coordinate module is mounted on the base, and a sample injection module is provided on the three-axis coordinate module; the sample injection module is connected to the cleaning module to realize the active cleaning of the sample injection module;

[0035] The cleaning module is located on one side of the three-axis coordinate module and does not move with the three-axis coordinate module; and the cleaning module is located at the starting position of the injection module so that the injection module can be inserted into the cleaning module to complete passive cleaning.

[0036] The sample tray 4 is slidably mounted on the three-axis coordinate module and located below the sample injection module. Multiple sample bottles are placed vertically inside the sample tray 4 to enable the sample injection module to detect the salinity of the sample bottles inside the sample tray 4.

[0037] The three-axis coordinate module includes: an X-axis translation mechanism 6, a Y-axis translation mechanism 3, and a Z-axis linear motion mechanism 7, which are connected to the electronic control module 5 via a drive motor;

[0038] The X-axis translation mechanism 6 has a double guide rail structure, with the sample tray 4 fixed on the sliders on the guide rails on opposite sides.

[0039] The Y-axis translation mechanism 3 is mounted on the supports on both sides of the machine base, and the X-axis translation mechanism 6 drives the sample tray 4 to pass through the bottom of the Y-axis translation mechanism 3.

[0040] A Z-axis linear motion mechanism 7 is slidably mounted on the Y-axis translation mechanism 3. A sample injection module is fixedly mounted on the slider of the Z-axis linear motion mechanism 7 so that the sample injection module can be inserted horizontally into the sample bottle in the sample tray 4.

[0041] The sample injection module includes: a sample injection needle, a sample injection needle tubing, a sample injection tube, a salinity meter, and a switching valve 1;

[0042] The injection needle is vertically mounted on the slider of the Z-axis linear motion mechanism 7 of the three-axis coordinate module, and the injection needle is connected to the injection tube through the injection needle tube. The injection tube is connected to the salinity meter to realize the salinity detection of the sample in the injection tube.

[0043] The salinity meter is connected to the switching valve 1 via a conduit; the salinity meter is also connected to the electronic control module 5 to transmit sample salinity data to the electronic control module;

[0044] The switching valve 1 is fixed on the housing of the cleaning module and is connected to the electrical control module 5 and the cleaning module respectively, so as to realize the switching between the salinity meter and the cleaning module pipeline and complete the active cleaning.

[0045] The cleaning module includes: a cleaning pump 2, a cleaning tank 8, and a waste discharge pump;

[0046] The cleaning pump 2 and the waste discharge pump are located on one side of the base. The cleaning pump 2 has a switching valve 1 on its upper part and is connected to the switching valve 1.

[0047] The cleaning pump 2 is connected to the liquid inlet of the cleaning tank 8, and the bottom of the cleaning tank 8 is connected to the waste discharge pump through the waste discharge port;

[0048] Both the cleaning pump 2 and the waste discharge pump are connected to the electrical control module 5, which controls their opening and closing.

[0049] The cleaning tank 8 is a hollow cylindrical structure and is located at the starting end of the movement of the Y-axis translation mechanism 3, and is coaxially arranged with the injection needle of the injection module at the starting end of the movement of the Y-axis translation mechanism 3.

[0050] A baffle is installed at the central axis of the sample tray 4, which is parallel to the forward direction of the sample tray 4; different sample trays are placed on both sides of the baffle to achieve compatible placement of various sample bottle sizes.

[0051] The sample tray is arranged in a square grid array, with each row of grid holes parallel to the Y-axis translation mechanism 3, to prevent the injection needle from being unable to insert into the sample vial in the grid holes.

[0052] The machine body is mounted on the base. The electrical control module 5, the three-axis coordinate module, the sample tray 4, the cleaning module, and the sample injection module are all located inside the machine body. The touch screen is embedded in the machine body to control the automatic sample injection device.

[0053] The fuselage is a transparent shell structure; the base is a flat tray made of corrosion-resistant stainless steel.

[0054] The working principle of this utility model is as follows:

[0055] The sample tray is placed on the sample tray 4. The user operates the touch screen and controls the X-axis translation mechanism 6 of the three-axis coordinate module through the electronic control module 5 (in this embodiment, a single-chip microcomputer is used), which moves the sample tray on the sample tray 4 to the bottom of the Y-axis translation mechanism 3. When the X-axis translation mechanism 6 moves to the preset position (i.e., the bottom of the Y-axis translation mechanism 3), the Z-axis linear motion mechanism 7 on the Y-axis translation mechanism 3 moves the injection needle sequentially to the top of each sample bottle in the sample tray. The Z-axis linear motion mechanism 7 moves the injection needle downward so that the injection needle is inserted into the sample bottle to complete the sampling. After sampling, the salinity meter detects the salinity of the sample in the injection tube and transmits the sample salinity data to the electronic control module, which is then displayed on the touch screen.

[0056] After the test is completed, users can select either active or passive cleaning mode via the touchscreen. In active cleaning mode, the Y-axis translation mechanism 3 and the Z-axis linear motion mechanism 7 move the injection needle into the cleaning tank 8. The switching valve 1, fixed to the housing of the cleaning module, switches the connection between the cleaning pump and the injection tube, completing the active cleaning process. In passive cleaning mode, the Y-axis translation mechanism 3 and the Z-axis linear motion mechanism 7 move the injection needle into the cleaning tank 8. The switching valve 1 switches the connection between the cleaning pump and the cleaning tank, completing the passive cleaning process.

[0057] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and modifications.

Claims

1. An automatic sample injection device for a salinity meter, characterized in that, include: The machine base, the electrical control module (5), and the touch screen, the three-axis coordinate module, the sample tray (4), the cleaning module and the sample injection module connected thereto; The three-axis coordinate module is mounted on the base, and a sample injection module is provided on the three-axis coordinate module; the sample injection module is connected to the cleaning module to realize the active cleaning of the sample injection module; The cleaning module is located on one side of the three-axis coordinate module and does not move with the three-axis coordinate module; and the cleaning module is located at the starting position of the injection module so that the injection module can be inserted into the cleaning module to complete passive cleaning. The sample tray (4) is slidably mounted on the three-axis coordinate module and located below the sample injection module. Multiple sample bottles are placed vertically inside the sample tray (4) so ​​that the sample injection module can detect the salinity of the sample bottles inside the sample tray (4).

2. The automatic sample injection device for a salinity meter according to claim 1, characterized in that, The three-axis coordinate module includes: an X-axis translation mechanism (6), a Y-axis translation mechanism (3), and a Z-axis linear motion mechanism (7) connected to the electronic control module (5) via a drive motor; The X-axis translation mechanism (6) is a double guide rail structure, and the sample tray (4) is fixed on the sliders on the guide rail on opposite sides; The Y-axis translation mechanism (3) is mounted on the supports on both sides of the machine base, and the X-axis translation mechanism (6) drives the sample tray (4) to pass through the bottom of the Y-axis translation mechanism (3); A Z-axis linear motion mechanism (7) is slidably provided on the Y-axis translation mechanism (3). A sample injection module is fixedly mounted on the slider of the Z-axis linear motion mechanism (7) so that the sample injection module can be inserted horizontally into the sample bottle in the sample tray (4).

3. The automatic sample injection device for a salinity meter according to claim 1, characterized in that, The injection module includes: an injection needle, an injection needle tubing, an injection tube, a salinity meter, and a switching valve (1); The injection needle is vertically mounted on the slider of the Z-axis linear motion mechanism (7) of the three-axis coordinate module, and the injection needle is connected to the injection tube through the injection needle tube. The injection tube is connected to the salinity meter to realize the salinity detection of the sample in the injection tube. The salinity meter is connected to the switching valve (1) via a conduit; the salinity meter is also connected to the electronic control module (5) to transmit sample salinity data to the electronic control module; The switching valve (1) is fixed on the housing of the cleaning module and is connected to the electrical control module (5) and the cleaning module respectively, so as to realize the switching between the salinity meter and the cleaning module pipeline and complete the active cleaning.

4. The automatic sample injection device for a salinity meter according to claim 1, characterized in that, The cleaning module includes: a cleaning pump (2), a cleaning tank (8), and a waste discharge pump; The cleaning pump (2) and the waste discharge pump are located on one side of the base. A switching valve (1) is provided above the housing of the cleaning pump (2) and is connected to the switching valve (1). The cleaning pump (2) is connected to the inlet of the cleaning tank (8), and the bottom of the cleaning tank (8) is connected to the waste discharge pump through the waste discharge port; Both the cleaning pump (2) and the waste discharge pump are connected to the electrical control module (5) so that they can be turned on or off by the electrical control module (5).

5. The automatic sample injection device for a salinity meter according to claim 4, characterized in that, The cleaning tank (8) is a hollow cylindrical structure and is located at the starting end of the movement of the Y-axis translation mechanism (3), and is coaxially arranged with the injection needle of the injection module at the starting end of the movement of the Y-axis translation mechanism (3).

6. The automatic sample injection device for a salinity meter according to claim 1, characterized in that, A baffle is provided at the central axis of the sample tray (4), and the baffle is parallel to the forward direction of the sample tray (4); different sample trays are placed on both sides of the baffle to achieve compatible placement of various sample bottle sizes.

7. The automatic sample injection device for a salinity meter according to claim 6, characterized in that, The sample disk is arranged in a square grid array, with each row of grid holes parallel to the Y-axis translation mechanism (3) to prevent the injection needle from being unable to insert into the sample bottle in the grid holes.

8. The automatic sample injection device for a salinity meter according to claim 1, characterized in that, The machine body is mounted on the base. The electronic control module (5), the three-axis coordinate module, the sample tray (4), the cleaning module and the sample injection module are all located inside the machine body. The touch screen is embedded in the machine body to control the automatic sample injection device.

9. The automatic sample injection device for a salinity meter according to claim 8, characterized in that, The body is a transparent shell structure; the base is a flat tray made of corrosion-resistant stainless steel.

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