Multipurpose automatic sampling device

Abstract

The utility model relates to the technical field of sampling, and discloses a multipurpose automatic sampling device which comprises an outer pipe and an inner pipe coaxially and rotatably mounted in the outer pipe, an outer pipe sampling hole is formed in a pipe body of the outer pipe, and an inner pipe sampling hole is formed in a pipe body of the inner pipe; a pressure sensor is installed on the outer wall of the upper side of the outer pipe, a displacement sensor is installed on the inner wall of the upper side of the inner pipe, a controller switch and a servo motor are installed at the upper end of the outer pipe, and the output end of the servo motor is in transmission connection with the upper end of the inner pipe. The top end of the inner pipe is connected with a sample collecting chamber which is connected with a negative pressure system through a pipeline. The automatic sampling device is suitable for powder, liquid and gas material samples, and can be used for conveniently and automatically sampling and uniformly mixing the sampled samples in the sample collecting chamber, so that dust generated when the sampled powder samples are mixed in a laboratory is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling technical field more specifically, relate to a multi -purpose automatic sampling device. BACKGROUND

[0002] Sampling refers to the process of extracting individuals or samples from the population, that is, the process of testing or observing the population, which is divided into two types of random sampling and non-random sampling, the former refers to the sampling method of extracting samples from the population according to the randomization principle, which does not have any subjectivity, including simple random sampling, systematic sampling, cluster sampling and stratified sampling, the latter is a method of extracting samples according to the researcher's point of view, experience or relevant knowledge, which has obvious subjective color.

[0003] The sampler is a sampling device, mainly according to the need to take samples. At present, the sampler is basically a single sampler, and specific samplers are required for powder, liquid and gas samples, and the existing sampler does not have a sample mixing function.

[0004] Therefore, it is necessary to design a multi-purpose sampling device to overcome the problems in the prior art. INVENTION CONTENTS

[0005] Therefore, the utility model provides a multi -purpose automatic sampling device, its specific technical scheme is as follows:

[0006] A multi -purpose automatic sampling device, including the outer tube and the inner tube that is coaxial rotation is installed in the inner tube of the outer tube, the outer tube is equipped with a plurality of outer tube sampling holes on the pipe body and is opened axially, the inner tube is equipped with a plurality of inner tube sampling holes on the pipe body and is opened axially, the outer tube sampling hole and the inner tube sampling hole are one to one corresponding when being located in the same side, the upper side outer wall of the outer tube is installed with pressure sensor, the upper side inner wall of the inner tube is installed with displacement sensor, the upper end of the outer tube is installed with controller switch and servo motor, the output end of the servo motor is transmission connection with the upper end of the inner tube to drive the inner tube relative rotation of the outer tube, the servo motor, the pressure sensor, the displacement sensor are all with the controller switch electric connection, the top end of the inner tube is connected with sample collection chamber, the sample collection chamber is connected with negative pressure system through pipeline.

[0007] Preferably, a bearing is installed between the inner tube and the outer tube, and the bearing is arranged on the inner wall of the upper end of the outer tube.

[0008] Preferably, the pressure sensor and the displacement sensor are located below the bearing.

[0009] Preferably, a column of outer tube sampling holes is arranged on the opposite sides of the pipe body of the outer tube, and a column of inner tube sampling holes is arranged on the opposite sides of the pipe body of the inner tube.

[0010] Preferably, the servo motor drives the inner tube to rotate by 90°.

[0011] Preferably, the bottom end of the outer tube is tapered.

[0012] Preferably, the top of the sample collection chamber is provided with a sample port, and a detachable sealing cover is installed on the sample port.

[0013] Preferably, the output end of the servo motor is connected to the upper end of the inner tube through a belt drive.

[0014] Preferably, the outer wall of the upper end of the inner tube is provided with a ring of driven gears, and the output end of the servo motor is provided with a ring of driving gears engaged with the driven gears.

[0015] Compared with the prior art, the multi-purpose automatic sampling device has the following advantages:

[0016] 1. When not in use, the corresponding sampling holes on the outer tube and the inner tube are staggered, the sampling device is in a sealed state, and the sampler is prevented from being contaminated.

[0017] 2. The sampling device is suitable for powder, liquid and gas material samples.

[0018] 3. The sampling device can realize automatic sampling, and is further provided with a sample collection chamber, so that the collected sample can be directly mixed and evenly discharged in the sample collection chamber.

[0019] 4. The sample collection chamber of the sampling device is connected with a negative pressure system, which can be started to assist in collecting powder samples and gas samples with poor flowability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0021] Figure 1 It is a whole structure schematic view of the multi-purpose automatic sampling device of the present application.

[0022] Figure 2 It is a flowchart of sampling of the multi-purpose automatic sampling device of the present application.

[0023] In the figure: 1-outer tube, 2-inner tube, 3-outer tube sampling hole, 4-inner tube sampling hole, 5-pressure sensor, 6-displacement sensor, 7-controller switch, 8-servo motor, 9-sample collection chamber, 10-negative pressure system, 11-sample port. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] Embodiment:

[0028] Referring to Figure 1 The present application is a multi-purpose automatic sampling device, comprising an outer tube 1 and an inner tube 2 coaxially and rotatably mounted inside the outer tube 1.

[0029] Further specifically, a bearing (not shown in the figure) is installed between the inner tube 2 and the outer tube 1, and the bearing is arranged on the inner wall of the upper end of the outer tube 1, so that the inner tube 2 can rotate smoothly.

[0030] A plurality of outer tube sampling holes 3 are axially formed on the tube body of the outer tube 1, and a plurality of inner tube sampling holes 4 are axially formed on the tube body of the inner tube 2, and the outer tube sampling holes 3 and the inner tube sampling holes 4 correspond one-to-one when located on the same side.

[0031] In the present application, only one row of sampling holes can be formed on the tube body of the outer tube 1 and the inner tube 2, or one row of outer tube sampling holes 3 can be formed on the opposite sides of the tube body of the outer tube 1, and one row of inner tube sampling holes 4 can be formed on the opposite sides of the tube body of the inner tube 2.

[0032] The rotation angle of the inner tube 2 driven by the servo motor 8 is 90°. When only one column of sampling holes is opened, the servo motor 8 needs to be reversed, and when two opposite columns of sampling holes are opened, the servo motor 8 can be normally rotated clockwise or counterclockwise.

[0033] The upper outer wall of the outer tube 1 is provided with a pressure sensor 5, the upper inner wall of the inner tube 2 is provided with a displacement sensor 6, the upper end of the outer tube 1 is provided with a controller switch 7 and a servo motor 8, the output end of the servo motor 8 is in transmission connection with the upper end of the inner tube 2 to drive the inner tube 2 to rotate relative to the outer tube 1, and the servo motor 8, the pressure sensor 5 and the displacement sensor 6 are all in electrical connection with the controller switch 7.

[0034] Further, the pressure sensor 5 and the displacement sensor 6 are both located below the bearing, so that when the device is inserted into the material for sampling, the corresponding sensors can timely sense the pressure change of the material on the device and the displacement change of the device itself, thereby providing a basis for the opening and closing of the servo motor 8.

[0035] The top end of the inner tube 2 is connected with a sample collection chamber 9, and the sample collection chamber 9 is connected with a negative pressure system 10 through a pipeline.

[0036] Further, the top of the sample collection chamber 9 is provided with a sample port 11, and the sample port 11 is provided with a detachable sealing cover.

[0037] Further, the bottom end of the outer tube 1 is in a conical shape for facilitating insertion into the material for sampling.

[0038] In a further specific embodiment, the output end of the servo motor 8 is in transmission connection with the upper end of the inner tube 2 through a belt. Alternatively, the upper end of the inner tube 2 is provided with a ring of driven gears, and the output end of the servo motor 8 is provided with a ring of driving gears meshing with the driven gears.

[0039] Working principle of the utility model:

[0040] Reference Figure 2The multi-purpose automatic sampling device is not sampled, the corresponding sampling holes on the outer tube 1 and the inner tube 2 are misaligned, the outer tube 1 is in a closed state, when the outer tube 1 is inserted into the material to be sampled, the pressure sensor 5 on the outer tube 1 receives the pressure of the material, and when the displacement sensor 3-5 does not sense the displacement change within 5 seconds (the time can be adjusted), the pressure sensor 5 and the displacement sensor 6 transmit signals to the controller switch 7 at the same time, the controller switch 7 controls the servo motor 8 to automatically open, the servo motor 8 controls the inner tube 2 to rotate 90 degrees, so that the inner tube and the outer tube are aligned, that is, the sampling device is opened, and the material is automatically entered into the sampling device; when the automatic sampling device is extracted, the pressure sensor 5 receives the pressure change signal, the displacement sensor 6 receives the displacement change signal, and the controller switch 7 transmits a signal to the servo motor 8 to control the inner tube 2 to rotate, so that the inner tube and the outer tube are misaligned, that is, the sampling device is closed.

[0041] The sampling device is turned over, the material in the inner tube 2 is entered into the sample collection chamber 9, and the shaking device is used to mix the material sample in the sample collection chamber 9, and then the material sample is discharged through the sample port 11 for standby.

[0042] When the powder sample and the liquid sample with good fluidity are taken, the negative pressure system 10 can not be started, and when the powder sample and the gas sample with poor fluidity are taken, the negative pressure system 10 needs to be started (note: the servo motor needs to be manually controlled to open and close when the gas sample is taken).

[0043] The multi-purpose automatic sampling device can be applied to powder, liquid and gas material samples, and can mix the taken samples in the sample collection chamber, reduces the dust generated when the taken powder sample is mixed in the laboratory, improves the work efficiency, and is environmental protection and convenient.

[0044] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0045] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications of the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-purpose automatic sampling device, characterized by, The utility model provides a kind of sampling device, including outer tube and coaxial rotation installation inside the inner tube of the outer tube;Several outer tube sampling holes are opened on the tube body of the outer tube axially, several inner tube sampling holes are opened on the tube body of the inner tube axially, the outer tube sampling hole and the inner tube sampling hole are one-to-one corresponding when located in same side;Pressure sensor is installed on the upper side outer wall of the outer tube, displacement sensor is installed on the upper side inner wall of the inner tube, the upper end of the outer tube is installed with controller switch and servo motor, the output end of the servo motor is drivingly connected with the upper end of the inner tube, to drive the inner tube relatively the rotation of the outer tube, the servo motor, the pressure sensor, the displacement sensor are electrically connected with the controller switch;The top end of the inner tube is connected sample collection chamber, and the sample collection chamber is connected negative pressure system by pipeline.

2. A multipurpose automatic sampling device according to claim 1, characterized in that The bearing is installed between the inner tube and the outer tube, and the bearing is arranged on the inner wall of the upper end of the outer tube.

3. A multipurpose automatic sampling device according to claim 2, characterized in that The pressure sensor and the displacement sensor are located below the bearing.

4. The multipurpose automatic sampling device according to claim 1, characterized in that, The tube body of the outer tube is respectively provided with a column of the outer tube sampling holes on opposite sides, and the tube body of the inner tube is respectively provided with a column of the inner tube sampling holes on opposite sides.

5. The multipurpose automatic sampling device according to claim 1, wherein The rotation angle of the inner tube driven by the servo motor is 90°.

6. The multipurpose automatic sampling device according to claim 1, characterized in that, The bottom end of the outer tube is conical.

7. The multipurpose automatic sampling device according to claim 1, characterized in that, A sample port is formed in the top of the sample collection chamber, and a detachable sealing cover is installed on the sample port.

8. A multipurpose automatic sampling device according to any one of claims 1 to 7, characterized in that, The output end of the servo motor is drivingly connected with the upper end of the inner tube by a belt.

9. A multipurpose automatic sampling device according to any one of claims 1 to 7, characterized in that, A driven gear is arranged on the outer wall of the upper end of the inner tube, and a driving gear is arranged on the output end of the servo motor and engaged with the driven gear.

Images