CN206208594U - A kind of vacuum sampling system for being suitable for sticky polyester - Google Patents
A kind of vacuum sampling system for being suitable for sticky polyester Download PDFInfo
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- CN206208594U CN206208594U CN201621269325.0U CN201621269325U CN206208594U CN 206208594 U CN206208594 U CN 206208594U CN 201621269325 U CN201621269325 U CN 201621269325U CN 206208594 U CN206208594 U CN 206208594U
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Abstract
The utility model provides a kind of vacuum sampling system for being suitable for sticky polyester, the vacuum sampling system includes vacuum sample control box, vacuum sample control box top is provided with vacuum tube, nitrogen sparge tube and evacuated tube, nitrogen sparge tube bottom is connected with polyester probe tube, polyester probe tube is extended downward through the bottom of vacuum sample control box, the part that polyester probe tube is located in vacuum sample control box is provided with curved mouth, polyester sampling pipe outer wall is coated with heat insulation layer, vacuum sample control box top is additionally provided with pressure sensor, and side wall is provided with observation window.Vacuum sampling system of the present utility model is safe and reliable, easy to operate, risk is small, wide adaptability.
Description
Technical field
The utility model belongs to chemical machinery field, and in particular to a kind of vacuum sampling system for being suitable for sticky polyester.
Background technology
The phase needs to carry out vacuum pumping usual unsaturated polyester resin after the reaction, forces moisture to be deviate from, and makes polycondensation anti-
Should be carried out to positive direction.Current unsaturated polyester resin producer commonly uses kettle side wall or the sampling of bottom double-valve structure：React
A DN25 pipe, 2 ball valves of being connected on pipe are welded in the side wall of kettle or bottom.During sampling, ball valve above is first opened, treat liquid flow
After out, ball valve above is closed, then open following ball valve, liquid is flowed into sampling container.This sampling mode is in reality
At least two drawbacks in：Usual polyester is all material sticky, that crystallinity is strong, after remaining in the polyester cooling in pipeline
Ball valve can be caused to be " frozen ", it is difficult to operate；In vacuumizing phase sampling, the air between two ball valves in pipeline can enter anti-
Kettle, and frequent operation ball valve are answered, if ball valve closing is not in place, air is also resulted in and is drawn into reactor.Air from kettle side or
Bottom is breakneck into reactor, and polyester gel can be caused to solidify, and causes inventory disposal.
Utility model content
The purpose of this utility model is directed to the above technical problem to be solved, there is provided one kind is safe and reliable to be suitable for
The vacuum sampling system of sticky polyester.
Therefore, the utility model provides solution below：
A kind of vacuum sampling system for being suitable for sticky polyester, the vacuum sampling system includes vacuum sample control box,
The vacuum sample control box top is provided with vacuum tube, nitrogen sparge tube and evacuated tube, and the nitrogen sparge tube bottom is connected with
Polyester probe tube, the polyester probe tube is extended downward through the bottom of the vacuum sample control box, the polyester sampling
Part of the pipe in the vacuum sample control box is provided with curved mouth, and the polyester sampling pipe outer wall is coated with heat insulation layer,
The vacuum sample control box top is additionally provided with pressure sensor, and the vacuum sample control box side wall is provided with observation window.
Preferably, it is equipped with electricity on the vacuum tube, the nitrogen sparge tube, the evacuated tube, the polyester probe tube
Magnet valve.
Preferably, the vacuum sample control box also includes lid and locking device.
Preferably, the polyester probe tube is stainless steel tube.
Preferably, pressure sensor is diffused semiconductor formula pressure sensor.
Preferably, the observation window is glass vision panel.
Compared with prior art, the utility model is adapted to the vacuum sampling system of sticky polyester and is not only suitable for synthesis under normal pressure
Stage samples, and is also suitable for the sampling of reactor vacuumizing phase, with safe and reliable, easy to operate, risk is small, adaptability
Wider array of advantage.
Brief description of the drawings
Fig. 1 is the structural representation of the vacuum sampling system that the utility model is adapted to sticky polyester.
Fig. 2 is the side view of vacuum sample control box.
Specific embodiment
The technical solution of the utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but this practicality
It is new to be not limited to following examples.
As depicted in figs. 1 and 2, the vacuum sampling system for being suitable for sticky polyester of the present utility model is grasped including vacuum sample
Make case 16 (it includes lid 8, and corresponding locking device 9,10,19), it is vacuum tube 4, nitrogen sparge tube 5, evacuated tube 6, poly-
Ester probe tube 18 (preferably 316L stainless steel tubes), pressure sensor 7 (preferably diffused semiconductor formula pressure sensor), insulation
Thermal insulation layer 13 (preferably inorganic heat preserving and heat insulation material, such as rock wool), observation window 15 (preferably glass vision panel).As schemed
Show, system of the present utility model includes vacuum sample control box 16, the top of vacuum sample control box 16 is provided with vacuum tube 4, nitrogen
Scavenging conduit 5 and evacuated tube 6, the bottom of nitrogen sparge tube 5 are connected with polyester probe tube 18, polyester probe tube 18 extend downward through
The bottom of vacuum sample control box 16, end is located at the following (not shown) of liquid level in reactor.Polyester probe tube 18 is located at
Part in vacuum sample control box 16 is provided with curved mouth 14, and the outer wall of polyester probe tube 18 is coated with heat insulation layer 13, vacuum
The top of sampling operation case 16 is additionally provided with pressure sensor 7, and the side wall of vacuum sample control box 16 is provided with observation window 15.Its
In, magnetic valve 17,3,1,2 is respectively equipped with polyester probe tube 18, evacuated tube 6, helium purge pipe 5, vacuum tube 4, to control to lead to
Cross the fluid flow size of pipeline.
It is as follows vacuumizing phase sampling process to be carried out using vacuum sampling system of the present utility model：Locking vacuum first takes
The lid 8 of sample control box 16, magnetic valve 17, the magnetic valve 3 in evacuated tube 6, the nitrogen sparge tube 5 closed on polyester probe tube 18
On magnetic valve 1, open vacuum tube 4 on magnetic valve 2, start to vacuumize, treat pressure sensor 7 display vacuum be slightly below
During the vacuum of reactor pressure sensor (not shown), the magnetic valve 17 on polyester probe tube 18 is progressively opened, now
Polyester can rise in the presence of pressure differential along polyester probe tube 18, until reaching curved mouth 14, flow into specimen cup 11 and (be placed in
In vacuum sample control box 16).When reaching required amount by the polyester amount in the confirmatory sample of observation window 15 cup, open nitrogen and blow
The magnetic valve 1 on pipe 5 is swept, the magnetic valve 2 closed on vacuum tube 4 purges at least 1min, then with nitrogen to polyester probe tube 18
The magnetic valve 17 closed on polyester probe tube 18.In case to be sampled during pressures near atmospheric, the magnetic valve in evacuated tube 6 is opened
3, then the lid 8 of sampling operation case 16 is opened, take out specimen cup 11, that is, complete the sampling process under reactor vacuum state.
It is as follows in synthesis under normal pressure stage sampling process using vacuum sampling system of the present utility model：First lock vacuum sample
The lid 8 of control box 16, opens the magnetic valve 17 on polyester probe tube 18, magnetic valve 3, the nitrogen purging closed in evacuated tube 6
Magnetic valve 1 on pipe 5, open vacuum tube 4 on magnetic valve 2, start to vacuumize, now polyester in the presence of pressure differential, meeting
Rise along probe tube 18, until curved mouth 14 is reached, in inflow specimen cup 11.By poly- in the confirmatory sample of observation window 15 cup
When ester amount reaches required amount, the magnetic valve 1 on nitrogen sparge tube 5 is opened, the magnetic valve 2 closed on vacuum tube 4, with nitrogen to poly-
Ester probe tube 18 purges at least 1min, is then shut off the magnetic valve 17 on polyester probe tube 18.Pressure is close to greatly in case to be sampled
During air pressure, the magnetic valve 3 in opening evacuated tube 6, then the lid 8 of sampling operation case 16 is opened, and take out specimen cup 11, that is, complete
The sampling process in reactor synthesis under normal pressure stage.
Compared with existing kettle side or bottom are by two sampling modes of ball valve, vacuum sampling system of the present utility model
The sampling of synthesis under normal pressure stage is not only suitable for, the sampling of reactor vacuumizing phase is also suitable for, with safe and reliable, operation
Easy, risk is small, the wider array of advantage of adaptability.
Claims (6)
1. a kind of vacuum sampling system for being suitable for sticky polyester, it is characterised in that：The vacuum sampling system takes including vacuum
Sample control box, the vacuum sample control box top is provided with vacuum tube, nitrogen sparge tube and evacuated tube, under the nitrogen sparge tube
Portion is connected with polyester probe tube, and the polyester probe tube is extended downward through the bottom of the vacuum sample control box, described
The part that polyester probe tube is located in the vacuum sample control box is provided with curved mouth, and the polyester sampling pipe outer wall is coated with insulation
Thermal insulation layer, the vacuum sample control box top is additionally provided with pressure sensor, and the vacuum sample control box side wall is provided with observation
Form.
2. vacuum sampling system according to claim 1, it is characterised in that：The vacuum tube, the nitrogen sparge tube, the row
Magnetic valve is equipped with blank pipe, the polyester probe tube.
3. vacuum sampling system according to claim 1, it is characterised in that：The vacuum sample control box also includes lid and lock
Tight device.
4. vacuum sampling system according to claim 1, it is characterised in that：The polyester probe tube is stainless steel tube.
5. vacuum sampling system according to claim 1, it is characterised in that：Pressure sensor is diffused semiconductor formula pressure sensing
Device.
6. vacuum sampling system according to claim 1, it is characterised in that：The observation window is glass vision panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269325.0U CN206208594U (en) | 2016-11-21 | 2016-11-21 | A kind of vacuum sampling system for being suitable for sticky polyester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269325.0U CN206208594U (en) | 2016-11-21 | 2016-11-21 | A kind of vacuum sampling system for being suitable for sticky polyester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206208594U true CN206208594U (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621269325.0U Active CN206208594U (en) | 2016-11-21 | 2016-11-21 | A kind of vacuum sampling system for being suitable for sticky polyester |
Country Status (1)
| Country | Link |
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| CN (1) | CN206208594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613842A (en) * | 2018-07-11 | 2018-10-02 | 广东捷玛节能科技股份有限公司 | A kind of vacuum sampler and its application method |
-
2016
- 2016-11-21 CN CN201621269325.0U patent/CN206208594U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613842A (en) * | 2018-07-11 | 2018-10-02 | 广东捷玛节能科技股份有限公司 | A kind of vacuum sampler and its application method |
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