CN220418888U - Sampling device and nylon 6 polymerization device - Google Patents
Sampling device and nylon 6 polymerization device Download PDFInfo
- Publication number
- CN220418888U CN220418888U CN202321606551.3U CN202321606551U CN220418888U CN 220418888 U CN220418888 U CN 220418888U CN 202321606551 U CN202321606551 U CN 202321606551U CN 220418888 U CN220418888 U CN 220418888U
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- valve
- sampling
- pipeline
- valve core
- cavity
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- 238000005070 sampling Methods 0.000 title claims abstract description 102
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 17
- 229920002292 Nylon 6 Polymers 0.000 title claims abstract description 15
- 238000004321 preservation Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 5
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002981 blocking agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a sampling device and a nylon 6 polymerization device, and belongs to the technical field of sampling equipment. The sampling device includes: the sampling valve comprises a valve body and a valve core, wherein the valve body is fixed on the outer wall of the pipeline and is provided with a valve cavity, a sample inlet and a sample outlet, the sample inlet and the sample outlet are respectively communicated with the valve cavity, the sample inlet is in butt joint communication with the discharge outlet, the valve core is arranged in the valve cavity and is provided with a first position and a second position in the valve cavity, and when the valve core is in the first position, the valve core closes the discharge outlet; when the valve core is positioned at the second position, the discharge port is communicated with the sampling port; the heat preservation pipe is sleeved on the sampling valve, a heat preservation cavity is formed between the inner wall of the heat preservation pipe and the outer wall of the sampling valve, and a heat tracing medium inlet and a heat tracing medium outlet which are communicated with the heat preservation cavity are respectively arranged on the heat preservation pipe; and the driving assembly is arranged on the sampling valve and used for driving the valve core to move between the first position and the second position. The sampling device is applicable to sampling of high-temperature materials.
Description
Technical Field
The utility model belongs to the technical field of sampling equipment, and particularly relates to a sampling device and a nylon 6 polymerization device.
Background
Nylon 6 is a polymer material with wide application, has good mechanical property, heat resistance, abrasion resistance, chemical solvent resistance and self-lubricating property, and simultaneously has excellent processing property, can be integrally formed into complex structural parts, and can be widely used as fibers, films and engineering plastics in the fields of automobiles, electronic appliances, machinery, rail transit, sports apparatuses and the like.
In the industrial production, nylon 6 is prepared by hydrolytic polycondensation of caprolactam in a polymerization kettle. In addition to caprolactam, other auxiliaries such as water, end capping agents and the like are required to be added during polymerization. In the caprolactam polymerization process, a plurality of high-temperature materials are required to be sampled and analyzed so as to ensure that the polymerization process and the device run stably and the product quality reaches the standard. For example, caprolactam/blocking agent mixture materials and slice extraction water, the temperature of the materials is between 80 and 150 ℃, the common sampling valve is difficult to run continuously and reliably at high temperature, and the materials remain in the sampling valve after sampling is finished, so that the materials are agglomerated, yellow, the valve is blocked, and a nylon 6 polymerization device is polluted, and adverse effects are brought to production.
Disclosure of Invention
In view of the above problems in the prior art, an object of an embodiment of the present utility model is to provide a sampling device and a nylon 6 polymerization device suitable for sampling high-temperature materials.
The technical scheme adopted by the embodiment of the utility model is as follows:
a sampling device, it is used for on the pipeline, be equipped with the discharge gate on the pipe wall of pipeline, sampling device includes:
the sampling valve comprises a valve body and a valve core, wherein the valve body is fixed on the outer wall of the pipeline and is provided with a valve cavity, a sample inlet and a sample outlet, the sample inlet and the sample outlet are respectively communicated with the valve cavity, the sample inlet is in butt joint communication with the discharge outlet, the valve core is arranged in the valve cavity and is provided with a first position and a second position in the valve cavity, and when the valve core is in the first position, the valve core closes the discharge outlet; when the valve core is positioned at the second position, the discharge port is communicated with the sampling port;
the heat preservation pipe is sleeved on the sampling valve, a heat preservation cavity is formed between the inner wall of the heat preservation pipe and the outer wall of the sampling valve, and a heat tracing medium inlet and a heat tracing medium outlet which are communicated with the heat preservation cavity are respectively arranged on the heat preservation pipe;
and the driving assembly is arranged on the sampling valve and used for driving the valve core to move between the first position and the second position.
Further, the driving assembly comprises a support and a handle rotationally connected with the support, the support is fixed on the valve body, the handle is connected with the valve core, and the handle can rotate relative to the valve body to drive the valve core to move.
Further, a clearance between the inner peripheral wall of the valve body and the outer peripheral wall of the valve core is 0.03mm ～ 0.05mm。
Further, the valve body is welded and fixed on the outer wall of the pipeline.
Further, a discharging channel which is communicated with the valve cavity and the sample inlet is formed in the valve body, the valve core is provided with a plugging head which is matched with the discharging channel and has the same outer diameter, when the valve core is positioned at the first position, the plugging head moves into the discharging channel, and the end face of the plugging head is flush with the inner wall face of the pipeline; when the valve core is positioned at the second position, the plugging head moves out of the discharging channel.
Further, the sampling valve further comprises a sampling tube, the inlet end of the sampling tube is communicated with the sampling port, and the outlet end of the sampling tube extends out of the outside.
Further, the outer peripheral wall of the heat preservation pipe is outwards protruded to form a first pipeline and a second pipeline which are communicated with the heat preservation cavity, the heat tracing medium inlet is formed in the first pipeline, the heat tracing medium outlet is formed in the second pipeline, a through hole is further formed in the second pipeline, the sampling pipe penetrates through the second pipeline and penetrates through the through hole to extend to the outside, and a sealing ring is arranged between the outer peripheral wall of the sampling pipe and the hole wall of the through hole.
Further, the first pipeline is arranged at the top of the heat preservation pipe, and the second pipeline is arranged at the bottom of the heat preservation pipe.
Further, the sampling valve is made of stainless steel.
The nylon 6 polymerization device comprises a pipeline for conveying materials, wherein a discharge hole is formed in the wall of the pipeline, and the nylon 6 polymerization device further comprises the sampling device in any embodiment.
Compared with the prior art, the embodiment of the utility model has the beneficial effects that:
the heat preservation pipe of the sampling device is sleeved on the sampling valve to form the heat preservation cavity, and when a pipeline is sampled, heat preservation medium can be introduced into the heat preservation cavity, so that a high-temperature environment is provided for the sampling device when the sampling device is used for sampling some high-temperature materials, and the high-temperature materials in the pipeline are prevented from being solidified in the valve cavity.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.
An overview of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.
Drawings
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the inventive embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
Fig. 1 is a schematic structural diagram of a sampling device according to an embodiment of the present utility model, where a valve core is shown in a first position.
1-line in the figure; 2-a sampling valve; 20-valve body; 21-a valve core; 23-plugging heads; 24-a discharge channel; 3-a heat preservation pipe; 4-a drive assembly; 40-bracket; 41-a handle; 5-sampling tube; 6-a first pipeline; 7-a second pipeline; 8-a sealing ring; 9-heat preservation cavity.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present utility model, the present utility model is described in detail below with reference to the accompanying drawings and detailed description.
The embodiment of the utility model provides a sampling device for a pipeline, wherein a discharge hole is arranged on the pipeline 1, and high-temperature materials flowing in the pipeline 1 can be taken out through the discharge hole. As shown in fig. 1, the sampling device mainly comprises three parts of a sampling valve 2, a heat preservation pipe 3 and a driving component 4.
The sampling valve 2 includes a valve body 20 and a valve spool 21. The valve body 20 is fixed on the outer wall of the pipeline 1, the valve body 20 is provided with a valve cavity, a sampling port and a sample inlet, the sampling port and the sample inlet are respectively communicated with the valve cavity, the sample inlet is in butt joint communication with a discharge port on the pipeline 1, and high-temperature materials flowing in the pipeline 1 can flow into the valve cavity through the sample inlet and then flow out through the sampling port.
The spool 21 is disposed in a valve chamber, and the spool 21 is movable relative to the valve body 20 and has a first position and a second position in the valve chamber. When the valve core 21 is at the first position, the valve core 21 closes the discharge port, and high-temperature materials in the pipeline 1 cannot enter the valve cavity. When the valve core 21 is in the second position, the discharge port is communicated with the sampling port, and high-temperature materials in the pipeline 1 can enter the valve cavity and flow out of the sampling port. When the high-temperature materials in the pipeline 1 need to be sampled, the valve core 21 can be moved to the second position, and after the sampling is finished, the valve core 21 can be moved to the first position.
The heat preservation pipe 3 is sleeved on the valve body 20, and a heat preservation cavity 9 is formed between the inner peripheral wall of the heat preservation pipe 3 and the outer peripheral wall of the valve body 20. The heat-tracing medium inlet and the heat-tracing medium outlet are arranged on the pipe wall of the heat-preserving pipe 3, and heat-tracing medium can be introduced into the heat-preserving cavity 9 so that the sampling device can provide a high-temperature environment when sampling. The temperature of the heat tracing medium is determined according to the temperature required for the high-temperature material flowing through the pipeline 1.
The driving assembly 4 is fixed on the sampling valve 2, and an operator can drive the valve core 21 to move in the valve cavity through the driving assembly 4.
The insulating tube 3 of sampling device that this embodiment provided overlaps on sampling valve 2 in order to form heat preservation chamber 9, when taking a sample pipeline 1, can be to letting in the heat tracing medium in the heat preservation chamber 9 to provide high temperature environment for this sampling device when taking a sample, be applicable to and take a sample some high temperature materials, avoid the high temperature material in pipeline 1 to solidify in the valve pocket.
The shape of the valve core 21 of the embodiment is matched with the shape of a valve cavity, the valve cavity is a cylindrical cavity, and the axis of the valve cavity is perpendicular to the axis of the pipeline 1. The spool 21 is reciprocally movable in the valve chamber in a direction perpendicular to the axis of the line 1.
The sampling port and the sample inlet are provided on the outer peripheral wall of the valve body 20, respectively. As shown in fig. 1, when the valve core 21 is in the first position, the valve core 21 simultaneously closes the feed port and the sampling port of the valve body 20, and when the valve core 21 is moved to the second position in a direction away from the pipeline 1, the feed port and the sampling port are opened, respectively, so that high-temperature material flowing into the valve cavity flows out through the sampling port.
Preferably, the gap between the inner peripheral wall of the valve body 20 and the outer peripheral wall of the valve element 21 of the present embodiment is 0.03mm to 0.05mm, so that the material is prevented from remaining in the gap therebetween.
As shown in fig. 1, the driving assembly 4 of the present embodiment includes a bracket 40 fixed to the valve body 20 and a handle 41 rotatably connected to the bracket 40. The handle 41 is connected to the valve element 21, and the valve element 21 can be driven to move in the valve cavity by rotating the valve element 21. An operator can hold the handle 41 to rotate clockwise to drive the valve body 20 to move from the first position to the second position; rotation in a counter-clockwise direction may move the valve body 20 from the second position to the first position.
The valve body 20 of the present embodiment is preferably welded directly to the outer wall of the pipeline 1 to ensure its strength for fixing to the pipeline 1.
In some embodiments, the valve body 20 has a discharge passage 24 therein that communicates with the valve chamber and the inlet port. The valve core 21 protrudes outwards towards one end of the feed inlet to form a plugging head 23 which is matched with the discharge channel 24 and has the same outer diameter.
When the valve element 21 is in the first position, as shown in fig. 1, the blocking head 23 thereon is moved into the discharge channel 24, and the end face of the blocking head 23 is flush with the inner wall face of the pipeline 1. When the valve core 21 moves from the first position to the second position, the blocking head 23 thereon moves out of the discharge channel 24 and enters the valve cavity, and the material in the pipeline 1 flows into the valve cavity through the discharge channel 24. Thus, when the sampling device moves back to the first position after the sampling work is finished, no material remains in the discharge channel 24, and no material remains near the discharge port on the valve body 20 and the pipeline 1, so that the non-retention sampling of high-temperature materials is realized.
Preferably, a first conical surface is formed at the connection part of the cavity wall of the valve cavity and the feeding channel, correspondingly, a second conical surface matched with the first conical surface is arranged on the valve core 21, and when the plugging head 23 on the valve core 21 moves into the discharging channel 24, the two conical surfaces are tightly attached, so that leakage of high-temperature materials is avoided.
The sampling valve 2 of this embodiment further includes sampling tube 5, and the entry end of sampling tube 5 stretches into the sample connection intercommunication on heat preservation intracavity and valve body 20, and the exit end of sampling tube 5 stretches out in the external world, can place the material at the exit end of sampling tube 5 and receive the bottle, and the high temperature material enters into the receiving bottle and accomplishes the sample.
As shown in fig. 1, the outer peripheral wall of the insulating tube 3 of the present embodiment is protruded outwardly to form a first pipe 6 and a second pipe 7 communicating with the insulating chamber 9, respectively, the heat tracing medium inlet is provided on the first pipe 6, and the heat tracing medium outlet is provided on the second pipe 7. The second pipeline 7 is also provided with a through hole, and the sampling pipe 9 penetrates through the second pipeline 7 and extends to the outside through the through hole.
The sampling tube 9 of this embodiment is provided with the sealing washer 8 between the outer peripheral wall of the part of wearing to locate in the through-hole and the pore wall of through-hole to avoid the leakage of companion's thermal medium.
Preferably, the first pipeline 6 of the embodiment is arranged at the top of the heat insulation pipe 3, and the second pipeline 7 is arranged at the bottom of the heat insulation pipe 3, so that heat tracing medium can flow in the heat insulation cavity 9.
The sampling valve 2 of the present embodiment is made of stainless steel, so that it can be used for sampling high temperature materials in the pipeline 1.
The embodiment of the utility model also provides a nylon 6 polymerization device, which comprises pipelines 1 for conveying high-temperature materials such as caprolactam/blocking agent mixture materials or slice extraction water, and the like, wherein the walls of the pipelines 1 are provided with discharge holes. The nylon 6 polymerization apparatus further comprising a sampling apparatus as described in any of the embodiments above. The sampling device can be used for sampling high-temperature materials in the nylon 6 polymerization device.
The above description is intended to be illustrative and not limiting, and variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present disclosure. Also, the above examples (or one or more aspects thereof) may be used in combination with each other, and it is contemplated that the embodiments may be combined with each other in various combinations or permutations.
Claims (10)
1. The utility model provides a sampling device, its is used for on the pipeline, be equipped with the discharge gate on the pipe wall of pipeline, its characterized in that, sampling device includes:
the sampling valve comprises a valve body and a valve core, wherein the valve body is fixed on the outer wall of the pipeline and is provided with a valve cavity, a sample inlet and a sample outlet, the sample inlet and the sample outlet are respectively communicated with the valve cavity, the sample inlet is in butt joint communication with the discharge outlet, the valve core is arranged in the valve cavity and is provided with a first position and a second position in the valve cavity, and when the valve core is positioned in the first position, the valve core closes the discharge outlet; when the valve core is positioned at the second position, the discharge port is communicated with the sampling port;
the heat preservation pipe is sleeved on the sampling valve, a heat preservation cavity is formed between the inner wall of the heat preservation pipe and the outer wall of the sampling valve, and a heat tracing medium inlet and a heat tracing medium outlet which are communicated with the heat preservation cavity are respectively arranged on the heat preservation pipe;
and the driving assembly is arranged on the sampling valve and used for driving the valve core to move between the first position and the second position.
2. A sampling device according to claim 1, wherein the drive assembly comprises a bracket and a handle rotatably connected to the bracket, the bracket being secured to the valve body, the handle being connected to the valve core, the handle being rotatable relative to the valve body to move the valve core.
3. A sampling device according to claim 1, wherein the gap between the inner peripheral wall of the valve body and the outer peripheral wall of the valve core is 0.03mm ～ 0.05mm。
4. A sampling device according to claim 1, wherein the valve body is welded to the outer wall of the pipeline.
5. The sampling device of claim 1, wherein the valve body is provided with a discharge channel which is communicated with the valve cavity and the sample inlet, the valve core is provided with a plugging head which is matched with the discharge channel and has the same outer diameter, when the valve core is in the first position, the plugging head moves into the discharge channel, and the end face of the plugging head is flush with the inner wall surface of the pipeline; when the valve core is positioned at the second position, the plugging head moves out of the discharging channel.
6. The sampling device of claim 1, wherein the sampling valve further comprises a sampling tube, the inlet end of the sampling tube is in communication with the sampling port, and the outlet end of the sampling tube extends outside.
7. The sampling device according to claim 6, wherein the outer peripheral wall of the heat preservation pipe is respectively protruded outwards to form a first pipeline and a second pipeline which are communicated with the heat preservation cavity, the heat tracing medium inlet is arranged on the first pipeline, the heat tracing medium outlet is arranged on the second pipeline, a through hole is further formed in the second pipeline, the sampling pipe penetrates through the second pipeline and extends to the outside through the through hole, and a sealing ring is arranged between the outer peripheral wall of the sampling pipe and the wall of the through hole.
8. The sampling device of claim 7, wherein the first conduit is disposed at the top of the insulating tube and the second conduit is disposed at the bottom of the insulating tube.
9. A sampling device according to claim 1, wherein the sampling valve is of stainless steel.
10. A nylon 6 polymerization apparatus comprising a pipeline for transporting materials, wherein a discharge port is provided on the wall of the pipeline, and the nylon 6 polymerization apparatus further comprises the sampling apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321606551.3U CN220418888U (en) | 2023-06-21 | 2023-06-21 | Sampling device and nylon 6 polymerization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321606551.3U CN220418888U (en) | 2023-06-21 | 2023-06-21 | Sampling device and nylon 6 polymerization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418888U true CN220418888U (en) | 2024-01-30 |
Family
ID=89651740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321606551.3U Active CN220418888U (en) | 2023-06-21 | 2023-06-21 | Sampling device and nylon 6 polymerization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418888U (en) |
-
2023
- 2023-06-21 CN CN202321606551.3U patent/CN220418888U/en active Active
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