CN208206577U - A kind of automatic sampler - Google Patents

Abstract

The utility model relates to a kind of automatic samplers, including sampling pipe, return pipe, first flange lid, the first valve, the second valve, third valve, the 4th valve, flushing pipe, gas tube, pneumatic diaphragm pump, inlet tube, the 5th valve, sampling bottle, outlet tube, the 6th valve, pH value tester, temperature measuring device and the 8th valve；The utility model can under conditions of not opening reaction kettle the representative sample of rapidly extracting, meanwhile, avoid the waste of sample, eliminate security risk, improve sampling efficiency and accuracy.

Description

A kind of automatic sampler

Technical field

The utility model relates to a kind of automatic samplers.

Background technique

It is essential step that sampling, which carries out analysis, in chemical industry synthesis, in closed reaction system；Conventional method sampling Have to temporarily open reaction kettle progress artificial sample, operability and risk are inevitable；With advances in technology, existing The method of sampling mostly uses vacuum for sample from extraction in reaction kettle and to the side that input positive pressure extrudes sample in reaction kettle Method, both methods the problem is that, in order to make extraction sample it is representative, would have to multiple repairing weld, until will Not having inside sampler chooses representative sample after representative sample produces and carries out sampling analysis, thus can There is the sample for greatly acquiring out that can not return in reactor or have to open the sample that reactor comes out acquisition Product return in reaction kettle, cause the waste of sample, and security risk is larger, need further improvement.

Utility model content

In view of the above-mentioned state of the art, the technical problem to be solved by the utility model is to provide it is a kind of can be not The representative sample of rapidly extracting under conditions of opening reaction kettle, meanwhile, the waste of sample is avoided, it is hidden to eliminate safety Suffer from, improves the automatic sampler of sampling efficiency and accuracy.

Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of automatic sampler, including sampling Pipe, return pipe, first flange lid, the first valve, the second valve, third valve, the 4th valve, flushing pipe, gas tube, pneumatically every Membrane pump, inlet tube, the 5th valve, sampling bottle, outlet tube, the 6th valve, pH value tester, temperature measuring device and the 8th valve, It is characterized in that, insertion is fixed with the sampling pipe and return pipe being distributed vertically in the first flange lid, the sampling pipe it is upper End insertion is fixed on the liquid feeding end of pneumatic diaphragm pump, and the upper end insertion of the return pipe is fixed on the outlet end of pneumatic diaphragm pump； The first valve and the second valve are installed on the sampling pipe；First valve is located at the upstream side of the second valve, and described Two valves are located at the upstream side of pneumatic diaphragm pump；One end of the flushing pipe be connected on sampling pipe and be located at the first valve and Between second valve；The 4th valve is installed in the flushing pipe；One end of the gas tube is connected in flushing pipe and is located at The upstream side of 4th valve is installed with the 8th valve on the return pipe, and one end of the inlet tube is connected on return pipe simultaneously Positioned at the upstream side of the 8th valve；The other end insertion of the inlet tube is connected in sampling bottle；It inserts one end of the outlet tube Enter to be connected in sampling bottle, outlet tube length in sampling bottle is greater than inlet tube length in sampling bottle；The return pipe On be also installed with pH value tester and temperature measuring device.

Preferably, the 5th valve is installed on the inlet tube.

Preferably, third valve is installed on the gas tube.

Preferably, the pH value tester is located at the upstream side of temperature measuring device, and the pH value tester is located at outlet tube Downstream side.

Compared with the prior art, the advantages of the utility model are: the utility model can be in the condition for not opening reaction kettle The representative sample of lower rapidly extracting, meanwhile, the waste of sample is avoided, security risk is eliminated, improves sampling effect Rate and accuracy.

Detailed description of the invention

Fig. 1 is the structure principle chart of the utility model；

Fig. 2 is the installation site figure of the utility model.

Specific embodiment

As shown in Fig. 1~2, a kind of automatic sampler, including sampling pipe 3, return pipe 4, first flange lid 5, the first valve 6, the second valve 7, third valve 8, the 4th valve 9, flushing pipe 10, gas tube 11, pneumatic diaphragm pump 12, inlet tube the 13, the 5th Valve 14, sampling bottle 15, outlet tube 16, the 6th valve 17, pH value tester 18, temperature measuring device 19 and the 8th valve 20, instead The top outer of kettle 1 is answered to be formed with branch pipe 101, the upper end of branch pipe 101 is formed with second flange lid 102, second flange lid 102 It is fixedly arranged above first flange lid 5, insertion is fixed with the sampling pipe 3 and return pipe 4 being distributed vertically in first flange lid 5, samples Pipe 3 is greater than length of the return pipe 4 in reaction kettle 1 in the length in reaction kettle 1；The lower end of sampling pipe 3 is inserted in reaction solution, The lower end of return pipe 4 is located at the top of reaction solution liquid level；The upper end insertion of sampling pipe 3 is fixed on the feed liquor of pneumatic diaphragm pump 12 End, the upper end insertion of return pipe 4 are fixed on the outlet end of pneumatic diaphragm pump 12；External air source passes through pipeline and pneumatic diaphragm pump 12 It is connected, external air source provides air pressure source for the operation of pneumatic diaphragm pump 12；The first valve 6 and second is installed on sampling pipe 3 Valve 7, the first valve 6 are located at the upstream side of the second valve 7, and the second valve 7 is located at the upstream side of pneumatic diaphragm pump 12；It rinses One end of pipe 10 is connected on sampling pipe 3 and between the first valve 6 and the second valve 7；The other end and Sheng of flushing pipe 10 There is the container of rinse solvent to be connected；The 4th valve 9 is installed in flushing pipe 10；One end of gas tube 11 is connected to flushing pipe 10 The upstream side of the 4th valve 9 is gone up and is located at, the other end of gas tube 11 is connected with nitrogen cylinder；Third is installed on gas tube 11 Valve 8；The 8th valve 20 is installed on return pipe 4, one end of inlet tube 13 is connected on return pipe 4 and is located at the 8th valve 20 Upstream side；The other end insertion of inlet tube 13 is connected in sampling bottle 15；The 5th valve 14 is installed on inlet tube 13；Liquid out One end insertion of pipe 16 is connected in sampling bottle 15, and the length in sampling bottle 15 of outlet tube 16 is greater than inlet tube 13 in sampling bottle 15 Middle length；PH value tester 18 and temperature measuring device 19 are also installed on return pipe 4；PH value tester 18 is located at temperature measuring device 19 upstream side, pH value tester 18 are located at the downstream side of outlet tube 16；Liquid in 18 energy real-time testing return pipe 4 of pH value tester The pH value of body；The temperature value of liquid in 19 energy real-time testing return pipe 4 of temperature measuring device.

Working principle: when needing to sample, the first valve 6, the second valve 7 and the 8th valve 20 are opened, closes third valve The 8, the 4th valve 9 of door, the 5th valve 14 and the 6th valve 17；External air source starts to supply pneumatic diaphragm pump 12, pneumatic diaphragm Pump 12 is started to work, and reaction solution 2 is sucked out via sampling pipe 3 under the action of pneumatic diaphragm pump 12 and returns to reaction along return pipe 4 In kettle 1, formed recycle simultaneously continue for some time, in this way can by sampling pipe 3 and return pipe 4 sample solution and reaction kettle 1 in Reaction solution 2 is consistent, and is referred to by the measured value of pH value tester 18 and temperature measuring device 19；Pipe 3 to be sampled and reflux The pH value of reaction solution 2 and temperature value are almost the same in the pH value of sample solution and temperature value and reaction kettle 1 in pipe 4, begin into Row sampling, sample solution at this moment is consistent with the indices of reaction solution 2 in reaction kettle 1, representative；At this point, opening the Five valves 14 and the 6th valve 17, simultaneously close off the 8th valve 20；Sample solution is entered by the 5th valve 14 and inlet tube 13 In sampling bottle 15, the gas in sampling bottle 15 is discharged to the outside by outlet tube 16 and the 6th valve 17；When the liquid level of sample solution When more than outlet tube 16, outlet tube 16 starts extra sample solution passing through 16 He of outlet tube under the pressure effect of sampling bottle 15 6th valve 17 is drained into reaction kettle 1；When sample solution is met the requirements, the 8th valve 20 is opened, the 5th valve is simultaneously closed off 14 and the 6th valve 17, thus return to sample solution in original circulation, remove sampling bottle 15 and extract sample solution, sampling knot Beam；After sampling, the 4th valve 9 is opened, closes the first valve 6, rinse solvent is entered into sampling pipe 3 by flushing pipe 10, And flow through sampling pipe 3 and return pipe 4 under the action of pneumatic diaphragm pump 12 and entered in reaction kettle 1 together with washings, To which sampling pipe 3 and return pipe 4 be rinsed well；After rinsing well, pneumatic diaphragm pump 12 is shut down, close the second valve 7 and the Four valves 9, and stop the supply of rinse solvent；The first valve 6 and third valve 8 are opened, the nitrogen in nitrogen cylinder is via inflation Pipe 11 enters in sampling pipe 3, and the rinse solvent of remaining is entered in reaction kettle 1 via sampling pipe 3, reaches cleaning sampling pipe 3 effect；The first valve 6 and the 8th valve 20 are closed, so that sampling pipe 3 and return pipe 4 are isolated with the disconnection of reaction kettle 1 completely, Reaction solution 2 in reaction kettle 1 is sealed.

It is essential step that sampling, which carries out analysis, in chemical industry synthesis, in closed reaction system；Conventional method sampling Have to temporarily open reaction kettle progress artificial sample, operability and risk are inevitable；With advances in technology, existing The method of sampling mostly uses vacuum for sample from extraction in reaction kettle and to the side that input positive pressure extrudes sample in reaction kettle Method, both methods the problem is that, in order to make extraction sample it is representative, would have to multiple repairing weld, until will Not having inside sampler chooses representative sample after representative sample produces and carries out sampling analysis, thus can There is the sample for greatly acquiring out that can not return in reactor or have to open the sample that reactor comes out acquisition Product return in reaction kettle, cause the waste of sample, and security risk is larger；The utility model can not open reaction kettle Under the conditions of the representative sample of rapidly extracting, meanwhile, avoid the waste of sample, eliminate security risk, improve and adopt Sample efficiency and accuracy.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that its according to It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is replaced on an equal basis It changes；And these are modified or replaceed, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution Spirit and scope.

Claims (4)

1. a kind of automatic sampler, including sampling pipe, return pipe, first flange lid, the first valve, the second valve, third valve, 4th valve, flushing pipe, gas tube, pneumatic diaphragm pump, inlet tube, the 5th valve, sampling bottle, outlet tube, the 6th valve, pH value Tester, temperature measuring device and the 8th valve, which is characterized in that insertion is fixed with adopting of being distributed vertically in the first flange lid Sample pipe and return pipe, the upper end insertion of the sampling pipe are fixed on the liquid feeding end of pneumatic diaphragm pump, and the upper end of the return pipe is inserted Enter to be fixed on the outlet end of pneumatic diaphragm pump；The first valve and the second valve are installed on the sampling pipe；First valve Positioned at the upstream side of the second valve, second valve is located at the upstream side of pneumatic diaphragm pump；One end of the flushing pipe connects On sampling pipe and between the first valve and the second valve；The 4th valve is installed in the flushing pipe；The gas tube One end be connected in flushing pipe and be located at the upstream side of the 4th valve, be installed with the 8th valve on the return pipe, it is described into One end of liquid pipe is connected to the upstream side on return pipe and being located at the 8th valve；The other end insertion of the inlet tube, which is connected to, adopts In sample bottle；One end insertion of the outlet tube is connected in sampling bottle, and outlet tube length in sampling bottle is greater than inlet tube The length in sampling bottle；PH value tester and temperature measuring device are also installed on the return pipe.

2. a kind of automatic sampler according to claim 1, which is characterized in that be installed with the 5th valve on the inlet tube Door.

3. a kind of automatic sampler according to claim 1, which is characterized in that be installed with third valve on the gas tube Door.

4. a kind of automatic sampler according to claim 1, which is characterized in that the pH value tester is located at temperature test The upstream side of instrument, the pH value tester are located at the downstream side of outlet tube.