Automatic quantitative sampling device controlled by PLC (Programmable Logic Controller)

Abstract

The utility model discloses a PLC control automatic quantitative sampling device which comprises a pipeline to be sampled, the pipeline to be sampled is connected with a quantitative sampling device, the quantitative sampling device comprises a circulating pipeline and a sampling loop, the sampling loop is connected to the circulating pipeline in series, the quantitative sampling device is installed in an integrated box body, and the sampling loop is connected to the circulating pipeline in series. An input / output port of the circulating pipeline is formed in the integrated box body; the sampling loop comprises two groups of quantitative sampling valves which are connected in series and a weighing operation table, the quantitative sampling valves which are connected in series on the sampling loop are electrically connected with a PLC (Programmable Logic Controller) control cabinet, a filter is arranged at a sampling port of the circulating pipeline, the filter is a Y-shaped filter, and the rear end of the filter is connected with a peristaltic pump.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid sampling technical field, concretely relates to a PLC control automatic quantitative sampling device. BACKGROUND

[0002] In prior art, when sampling pipeline medium, sampling valve is arranged on the pipeline, and the medium in internal flow state can be guided out after opening through conventional ball valve structure, and sampling is carried out by using sampling bottle, but the above scheme cannot realize quantitative process, and manual observation is needed for quantitative sampling, and the operation steps are complicated. Meanwhile, the conventional sampling valve is fixedly installed at the specified position of the pipeline to be sampled, and is influenced by the medium working condition of the pipeline to be sampled and human factors, so that the sample representativeness is poor, and the detection result of the final sample cannot accurately reflect the medium parameter of the pipeline to be sampled under actual use state.

[0003] In view of the above factors, a PLC control automatic quantitative sampling device is specially designed, the medium in the pipeline to be sampled is circulated during sampling, the medium detection consistency in the pipeline to be sampled is ensured, and in order to realize quantitative sampling under the valve state of PLC control in use state, two groups of series quantitative sampling valves are arranged on the sampling circuit. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of PLC control automatic quantitative sampling device to solve the problems raised in the above background.

[0005] The utility model aims at providing a kind of PLC control automatic quantitative sampling device to solve the problems raised in the above background.

[0006] The quantitative sampling device is installed in integrated box, and the input / output port of circulation pipeline is formed in the integrated box;

[0007] The sampling circuit includes two groups of series quantitative sampling valves and weighing operation platform;

[0008] The quantitative sampling valve series connected on the sampling circuit is electrically connected with PLC control cabinet.

[0009] Further, the sampling port position of circulation pipeline is provided with filter, filter is Y type filter, and the rear end of filter is connected with peristaltic pump.

[0010] Further, the end of the circulation pipeline is directly connected with the pipeline to be sampled, and the sampling end and the end of the circulation pipeline are provided with control valves, which are ball valves, and the control valves are electrically connected with the PLC control cabinet.

[0011] Further, the sampling circuit is provided with a sampling pump, and the end of the sampling circuit is connected with the circulation pipeline.

[0012] Further, two groups of quantitative sampling valves in series are arranged on the sampling circuit at intervals, and the quantitative sampling valves are GHZXQYF-10 series double-phase stainless steel online quantitative sampling valves.

[0013] Further, two groups of weighing sensors are arranged at the lower end of the quantitative sampling valves, and the weighing sensors correspond to the quantitative sampling valves in an up-down manner.

[0014] Further, an exhaust pipeline is arranged on the pipeline where the quantitative sampling valves and the sampling pump are located, and the end of the exhaust pipeline is connected with an adsorption tank.

[0015] Further, the adsorption tank is filled with activated carbon particles.

[0016] Compared with the prior art, the utility model has the beneficial effects of:

[0017] The utility model discloses a kind of sampling devices, which can be used for the medium in the pipeline to be sampled to be circulated in use state, to ensure that the medium in the circulation pipeline of the sample to be taken is consistent.

[0018] The utility model discloses a kind of sampling devices, which can realize quantitative sampling in PLC control valve state in use state, and two groups of quantitative sampling valves in series are arranged on the sampling circuit at intervals, and the quantitative sampling valves are GHZXQYF-10 series double-phase stainless steel online quantitative sampling valves.

[0019] The utility model discloses a kind of sampling devices, which can be used for quantitative weighing in use state, not only can intuitively observe the weight of the sample, but also can detect whether there is error in quantitative sampling valve quantification by weight, and two groups of weighing sensors are arranged at the lower end of the quantitative sampling valves, and the weighing sensors correspond to the quantitative sampling valves in an up-down manner.

[0020] The utility model discloses a kind of sampling devices, which are simple in structure, novel in design principle, accurate and stable in sampling amount, reliable in performance, low in operation failure rate, and convenient to maintain.

[0021] The utility model discloses a kind of sampling devices, which are high in PLC memory control automation, and flow signal is monitored throughout the sample collection. DRAWINGS

[0022] Figure 1 It is the schematic view that the pipeline to be sampled of the utility model is connected with integrated box.

[0023] Figure 2 is the schematic diagram of the quantitative sampling device in the integrated box of the utility model;

[0024] Figure 3 is the schematic diagram of the circulation pipeline of the utility model;

[0025] Figure 4 is the schematic diagram of the sampling circuit of the utility model;

[0026] Figure 5 is the schematic diagram of the connection between the quantitative sampling device and the PLC control cabinet of the utility model. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] As shown in Figures 1-5 A PLC control automatic quantitative sampling device, comprising a pipeline to be sampled 1, the pipeline to be sampled 1 is connected with a quantitative sampling device 2, the quantitative sampling device 2 comprises a circulation pipeline 3 and a sampling circuit 4, the sampling circuit 4 is connected in series on the circulation pipeline 3.

[0029] The quantitative sampling device 2 is installed in an integrated box 5, and the integrated box 5 is provided with an input / output port of the circulation pipeline 3.

[0030] The end surface of the integrated box 5 is connected with a side opening door in a hinged manner, and the side opening door is provided with a transparent window.

[0031] The sampling circuit 4 comprises two groups of series-connected quantitative sampling valves 6 and weighing operation tables 7.

[0032] The series-connected quantitative sampling valves 6 on the sampling circuit 4 are electrically connected with a PLC control cabinet.

[0033] In order to facilitate circulation of the medium in the pipeline to be sampled 1 through the circulation pipeline 3 in the use state, the consistency of the medium detection in the circulation pipeline to be sampled is ensured.

[0034] In order to facilitate filtration of the medium in the pipeline to be sampled 1 through the filter in the use state, the sampling port position of the circulation pipeline 3 is provided with a filter 8, the filter is a Y-shaped filter, and the rear end of the filter is connected with a peristaltic pump 9.

[0035] In order to facilitate the use of the state, through the PLC control cycle pipeline on-off, the end of the cycle pipeline 3 is directly connected with the sampling pipeline 1, and the sampling end and the end of the cycle pipeline 3 are provided with control valves 10, the control valve 10 is a ball valve, and the control valve 10 is electrically connected with the PLC control cabinet.

[0036] In order to facilitate the use of the state, through the cycle pipeline and the sampling circuit in series, the sampling pump 11 is arranged on the sampling circuit 4, and the end of the sampling circuit 4 is connected on the cycle pipeline 3.

[0037] In order to facilitate the control of the pipeline medium flow, the control valve is arranged on the sampling circuit 4 and the proximal end of the sampling pump 11.

[0038] In order to facilitate the use of the state, the PLC control valve can realize quantitative sampling, two groups of quantitative sampling valves 6 in series are arranged on the sampling circuit 4, and the quantitative sampling valve 6 is of GHZXQYF-10 series double-phase stainless steel online quantitative sampling valve.

[0039] In order to facilitate the use of the state, quantitative weighing can not only directly observe the weighing weight of the sample, but also can detect whether the quantitative sampling valve 6 is quantitative or not by the weighing weight, two groups of weighing sensors 12 are arranged on the lower end of the quantitative sampling valve 6, and the weighing sensor 12 corresponds to the quantitative sampling valve 6.

[0040] In order to facilitate the use of the state, through the setting of the exhaust pipeline and the adsorption tank, the air or the volatile gas of the liquid medium in the sampling circuit 4 is discharged and adsorbed, the exhaust pipeline is arranged on the pipeline where the quantitative sampling valve 6 and the sampling pump 11 are located, the end of the exhaust pipeline is connected with the adsorption tank, and the adsorption tank is filled with activated carbon particles.

[0041] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0042] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A PLC-controlled automatic quantitative sampling device, comprising a sampling pipe (1), characterized in that: A quantitative sampling device (2) is connected to the sampling pipeline (1). The quantitative sampling device (2) includes a circulation pipeline (3) and a sampling circuit (4). The sampling circuit (4) is connected in series with the circulation pipeline (3). The quantitative sampling device (2) is installed inside the integrated box (5), and the integrated box (5) is provided with an input / output port for the circulation pipeline (3); The sampling circuit (4) includes two sets of quantitative sampling valves (6) connected in series and a weighing operating table (7); The quantitative sampling valve (6) connected in series on the sampling circuit (4) is electrically connected to the PLC control cabinet.

2. The PLC-controlled automatic quantitative sampling device according to claim 1, characterized in that, A filter (8) is installed at the sampling port of the circulation pipeline (3). The filter is a Y-type filter, and a peristaltic pump (9) is connected to the rear end of the filter.

3. The PLC-controlled automatic quantitative sampling device according to claim 2, characterized in that, The end of the circulation pipeline (3) is directly connected to the sampling pipeline (1), and both the sampling end and the end of the circulation pipeline (3) are equipped with control valves (10). The control valves (10) are ball valves, and the control valves (10) are electrically connected to the PLC control cabinet.

4. The PLC-controlled automatic quantitative sampling device according to claim 3, characterized in that, A sampling pump (11) is provided on the sampling circuit (4), and the end of the sampling circuit (4) is connected to the circulation pipeline (3).

5. The PLC-controlled automatic quantitative sampling device according to claim 4, characterized in that, Two sets of serially connected quantitative sampling valves (6) are provided at intervals on the sampling circuit (4). The quantitative sampling valve (6) is a GHZXQYF-10 series duplex stainless steel online quantitative sampling valve.

6. The PLC-controlled automatic quantitative sampling device according to claim 5, characterized in that, The lower end of the quantitative sampling valve (6) is equipped with a weighing operating platform (7) consisting of two sets of weighing sensors, which correspond vertically to the quantitative sampling valve (6).

7. The PLC-controlled automatic quantitative sampling device according to claim 6, characterized in that, An exhaust pipe (12) is provided on the pipeline where the quantitative sampling valve (6) and the sampling pump (11) are located, and the end of the exhaust pipe (12) is connected to the adsorption tank.

8. The PLC-controlled automatic quantitative sampling device according to claim 7, characterized in that, The adsorption tank is filled with activated carbon particles.

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