Sampling and back-flushing device suitable for pipeline samples
Technical Field
The invention relates to a sampling and backwashing device, in particular to a sampling and backwashing device suitable for pipeline samples.
Background
When the pipeline is used for sampling, a sample needs to be taken into a sampling bottle, and after the sampling, a pipeline for sampling is backwashed, and the prior art lacks such a device.
Accordingly, the present invention is directed to a sampling device that is backwashable.
Disclosure of Invention
The above purpose of the invention is realized by the following technical scheme:
a device suitable for pipeline sample sampling and backwashing, comprising: seted up sample entry, outer tube export on the cylinder, still include: the two-position three-way valve is arranged on the outer sleeve outlet through an adapter, and a passage for communicating the outer sleeve outlet and the two-position three-way valve is formed in the adapter; install interior sleeve pipe in the cylinder, interior sleeve pipe with sample entry intercommunication, the sliding sleeve is equipped with the outer tube on interior sleeve pipe, the outer tube stretches out the outer tube export, sample mouth is installed to the outer tube upper end.
The device is suitable for sampling and backwashing pipeline samples, wherein a cylindrical cavity is formed in the cylinder, and the inner sleeve is arranged in the cylindrical cavity and is on the same straight line with the axis of the cylindrical cavity; the outer sleeve includes: the tube body is provided with a sliding sealing ring which is sleeved on the inner sleeve in a sliding way.
The device is suitable for pipeline sample sampling and backwashing, wherein the cylinder is further provided with two air inlet and outlet ports which are respectively communicated with two sides of the sliding sealing ring.
The device is suitable for pipeline sample sampling and backwashing, wherein one end part of the inner sleeve is arranged on the inner wall of the cylinder.
The device is suitable for pipeline sample sampling and backwashing, wherein the axis of the sampling nozzle penetrates through two opposite pipe orifices of the two-position three-way valve.
In conclusion, due to the adoption of the technical scheme, the automatic sampling device can sample through the air cylinder, the inner sleeve, the outer sleeve, the adapter, the two-position three-way valve and the sampling nozzle, and can perform back flushing on a pipeline after sampling, so that the safety and the reliability of automatic sampling of the pipeline are improved.
Drawings
FIG. 1 is a schematic diagram of a sampling state of the present invention suitable for use in a pipeline sample sampling and backwashing apparatus;
fig. 2 is a schematic structural diagram of a back flushing state of the pipeline sample sampling and back flushing device.
Detailed Description
The invention is further described below with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of a sampling state of a pipeline sample sampling and backwashing device of the present invention, fig. 2 is a schematic structural diagram of a backwashing state of the pipeline sample sampling and backwashing device of the present invention, and referring to fig. 1 and fig. 2, a device for sampling and backwashing a pipeline sample comprises: seted up sample entry 1, outer tube 4 export on the cylinder 5, still include: the two-position three-way valve 7 is arranged on the outlet of the outer sleeve 4 through the adapter 6, and a passage communicated with the outlet of the outer sleeve 4 and the two-position three-way valve 7 is arranged in the adapter 6; install interior sleeve pipe 3 in the cylinder 5, interior sleeve pipe 3 and sample entry 1 intercommunication, interior sleeve pipe 3 goes up the sliding sleeve and is equipped with outer tube 4, and outer tube 4 stretches out the export of outer tube 4, and sample mouth 11 is installed to outer tube 4 upper end.
The cylinder 5 of the invention is provided with an upper air inlet and a lower air outlet 2, a sample sampling inlet 1 and an adapter interface 8; the inner sleeve 3 is arranged in the cylinder 5, a sample flows through the inner sleeve 3, the inner sleeve 3 has a guiding function, the inner sleeve 3 is arranged in the outer sleeve 4 to form a double-sleeve form and is arranged in the cylinder 5; the outer sleeve 4 plays a role of a piston in the cylinder 5, is sleeved outside the inner sleeve 3 and can move along the axial direction of the inner sleeve 3; the adapter 6 is connected with the adapter interface 8 of the cylinder 5, and plays a role in connecting the two-position three-way valve 7 with the cylinder 5, so that the sampling pipeline can be backwashed; the two-position three-way valve 7 is provided with an adapter interface 8, a flushing medium inlet and a sampling bottle interface; the sampling nozzle 11 is connected with the outer sleeve 4 and can move along the axial direction, thereby realizing the sampling action.
Further, a cylindrical cavity is arranged in the cylinder 5, and the inner sleeve 3 is arranged in the cylindrical cavity and is on the same straight line with the axis of the cylindrical cavity; the outer sleeve 4 includes: the tube body is provided with a sliding sealing ring which is sleeved on the inner sleeve 3 in a sliding way.
Furthermore, two air inlet and outlet ports 2 are further formed in the air cylinder 5, and the air inlet and outlet ports 2 are respectively communicated with two sides of the sliding sealing ring.
Further, one end of the inner tube 3 is attached to the inner wall of the cylinder 5.
Further, the axis of the sampling nozzle 11 passes through two opposite pipe openings of the two-position three-way valve 7.
The state shown in fig. 1 is a sampling state, the adapter port 8 of the two-position three-way valve 7, the flushing medium inlet 9 and the sampling bottle port 10 are communicated, and the sampling nozzle 11 extends out of the sampling bottle port 10 through the adapter port 8 to start sampling;
the state shown in fig. 2 is a back flushing state, the adapter port 8 of the two-position three-way valve 7 is communicated with the flushing medium inlet, and the flushing medium flows in from the flushing medium inlet, flows through the sampling nozzle 1111, the outer sleeve 4, the inner sleeve 3 and the sample sampling inlet 1, and returns to the pipeline, so that the pipeline is flushed.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that many modifications and variations can be made by those skilled in the art in light of the above teachings without the use of inventive faculty, or by software programming. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.