CN211784554U

CN211784554U - Sampling device for polymerization kettle

Info

Publication number: CN211784554U
Application number: CN202020369281.9U
Authority: CN
Inventors: 杨洛阳; 杨永
Original assignee: Shanghai Findunm New Material Technology Co ltd
Current assignee: Shanghai Findunm New Material Technology Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-10-27
Anticipated expiration: 2030-03-20

Abstract

The utility model relates to a sampling device for polymeric kettle, including outer tube, interior pole, spring, compressor, evacuation subassembly. The outer pipe penetrates through the seal head of the polymerization kettle and extends downwards to the interior of the polymerization kettle; the inner rod is sleeved in the outer tube in a penetrating manner and comprises an inner rod main body, a piston end arranged at the top of the inner rod main body and a sampling end arranged at the bottom of the inner rod main body, wherein the piston end and the top end of the outer tube form a piston cavity; the spring is fixed on the inner wall of the outer tube, and the piston end is pressed against the upper end of the spring. Compared with the prior art, the utility model discloses well sampling head has avoided under the protection of outer tube by reaction fluid' S impact, the promotion that is showing the life of sampling head, accomplishes the resilience force of accessible spring in the twinkling of an eye of sample and accomplishes and reset, and each part cooperation is accurate, can accomplish a sample cycle in 1 ~ 2S, the accurate sampling volume of having confirmed at every turn.

Description

Sampling device for polymerization kettle

Technical Field

The utility model relates to a sampling device especially relates to a sampling device for polymeric kettle.

Background

During the operation of a polymerization reactor, a sample of the reaction solution is taken from the reactor and analyzed to determine the extent of the reaction, or the performance of the catalyst, or other technical information. The traditional sampling mode is that a sampling port of a reactor is connected with a shower guide pipe or is connected with an anti-blocking plunger valve, and the rear part of the sampling device is sampled by a sample container.

Because the sample in the polymerization reactor often is high temperature, high pressure, high viscosity fluid, and presents higher rotatory impact momentum under the stirring, traditional sample mode causes splashing, the blowout of reaction solution easily, causes serious security threat to the sample operator, and the influence that receives high viscosity, high corruption, high rotatory impact momentum easily after the sample head of traditional sampler puts into polymerization reaction cauldron simultaneously causes the damage of sample head. In another important aspect, the volume of sampling at every time is not fixed, the sampling efficiency of the sampling head is low, and the sampling head needs 10-30 s to be important, so that the sampling cost is high, and the sampling cost is the bottleneck problem in the sampling process of the conventional polymerization kettle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sampling device for polymeric kettle in order to overcome the defect that above-mentioned prior art exists, wherein the sampling head has avoided under the protection of outer tube by reaction fluid' S impact, the promotion that is showing the life of sampling head, the resilience force of accessible spring is accomplished in the twinkling of an eye to accomplish the sample and is reset, each parts cooperation is accurate, can accomplish a sample cycle in 1 ~ 2S, accurate definite sampling volume at every turn.

The purpose of the utility model can be realized through the following technical scheme:

the utility model discloses in be used for polymeric kettle's sampling device, including outer tube, interior pole, spring, compressor, evacuation subassembly, wherein specifically:

the outer pipe penetrates through the seal head of the polymerization kettle and extends downwards to the interior of the polymerization kettle;

the inner rod is sleeved in the outer tube in a penetrating mode and comprises an inner rod main body, a piston end arranged at the top of the inner rod main body and a sampling end arranged at the bottom of the inner rod main body, and the piston end and the top end of the outer tube form a piston cavity;

the spring is fixed on the inner wall of the outer tube, and the piston end is pressed against the upper end of the spring;

the compressor is connected with the piston cavity and provides compressed air into the piston cavity, so that the upper part of the piston end is pressed to drive the inner rod main body and the sampling end to move downwards to finish sampling;

and the vacuumizing assembly provides vacuum suction force for the sampling end.

Furthermore, a first vacuum cavity is arranged in the inner rod body, a second vacuum cavity is arranged in the sampling end, and the first vacuum cavity is communicated with the second vacuum cavity.

Furthermore, a first suction hole is formed in the side wall of the inner rod main body and communicated with the first vacuum cavity.

Furthermore, a sealing suction nozzle is arranged at the suction end of the vacuumizing assembly and is pressed against the first suction hole; the vacuum pumping without leakage is realized, and the vacuum pumping of the second vacuum cavity is completed simultaneously because of mutual communication. The sealing suction nozzle is staggered with the first suction hole when the spring is pressed down.

The output end of the vacuumizing assembly is provided with an output pipe. The device is used for discharging gas during vacuum pumping and discharging liquid samples during sample discharging.

Furthermore, the lower end of the sampling end is provided with a second suction hole, the second suction hole is provided with a first hole plug, and the first hole plug is connected with the inner wall of the sampling end through an elastic rope.

Furthermore, a third suction hole is formed in the lower end of the outer tube, a second hole plug is arranged on the third suction hole and connected with the inner wall of the outer tube through an elastic rope, and when the sampling end moves downwards, the sampling end presses the second hole plug downwards to enable the second hole plug to move downwards, the first hole plug moves upwards, and the liquid sample is sucked through vacuum suction.

Further, the first hole plug and the second hole plug are both conical plugs.

Further, the vacuum-pumping assembly is a vacuum pump.

Furthermore, a spring mounting table is arranged in the outer pipe, and the lower end of the spring is pressed against the spring mounting table.

Furthermore, an electromagnetic valve is arranged between the first vacuum cavity and the second vacuum cavity. The electromagnetic valve is wirelessly connected with an external controller, and wireless opening and closing control can be realized.

Compared with the prior art, the utility model has the advantages of it is following:

1) the sampling head in this technical scheme has avoided under the protection of outer tube by the impact of reaction fluid to only descend the sample under pressure air does the promotion, the promotion that is showing the life of sampling head.

2) The sampling process in the technical scheme has higher sampling efficiency, and the piston cavity can finish the accumulation of pressure air in a very short time; the first vacuum cavity and the second vacuum cavity automatically finish vacuumizing after sampling is finished each time, the vacuum degree can be guaranteed to be maintained in the descending sampling process, the vacuum degree is released until the target stroke is reached, sampling is finished, resetting can be finished through resilience force of the spring in the moment of finishing sampling, all parts are matched precisely, and a sampling period can be finished in 1-2S.

3) The cooperation of the second vacuum cavity and the electromagnetic valve ensures the suction force of each vacuum sampling, and simultaneously accurately determines the sampling amount of each sampling.

Drawings

FIG. 1 is a schematic structural view of a sampling device for a polymerizer of the present invention;

fig. 2 is a schematic diagram of the setting position of the middle sampling device of the present invention.

In the figure: 1. the vacuum sampling device comprises a sealing head, 2, an outer pipe, 3, an inner rod, 4, a spring, 5, a compressor, 6, a vacuumizing assembly, 21, a piston cavity, 22, a second hole plug, 23, a spring mounting table, 31, a piston end, 32, an inner rod body, 33, a sampling end, 321, a first vacuum cavity, 322, a first suction hole, 331, a second vacuum cavity, 332 and a first hole plug.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Examples

The utility model discloses in be used for polymeric kettle's sampling device, including outer tube 2, interior pole 3, spring 4, compressor 5, evacuation subassembly 6, see figure 1.

The outer tube 2 extends through the head 1 of the polymerizer and extends down to the inside of the polymerizer, see fig. 2. The outer tube 2 is provided with a spring mounting table 23, and the lower end of the spring 4 is pressed against the spring mounting table 23. The sampling head has avoided under the protection of outer tube 2 by the impact of reaction fluid to only descend the sample under the pressure air does the promotion, showing promotion the life of sampling head.

The inner rod 3 is sleeved inside the outer tube 2 and comprises an inner rod main body 32, a piston end 31 arranged at the top of the inner rod main body 32 and a sampling end 33 arranged at the bottom of the inner rod main body 32, wherein the piston end 31 and the top end of the outer tube 2 form a piston cavity 21. The inner rod body 32 is provided with a first vacuum chamber 321, the sampling end 33 is provided with a second vacuum chamber 331 therein, and the first vacuum chamber 321 is communicated with the second vacuum chamber 331. The inner rod body 32 has a first suction hole 322 formed in a sidewall thereof, and the first suction hole 322 is connected to the first vacuum chamber 321. A solenoid valve is provided between the first vacuum chamber 321 and the second vacuum chamber 331. The electromagnetic valve is wirelessly connected with an external controller, and wireless opening and closing control can be realized.

The spring 4 is fixed on the inner wall of the outer tube 2, and the piston end 31 is pressed against the upper end of the spring 4. The sealing nozzle is displaced from the first suction hole 322 when the spring 4 is pressed down. The output end of the vacuumizing assembly 6 is provided with an output pipe. The device is used for discharging gas during vacuum pumping and discharging liquid samples during sample discharging.

The compressor 5 is connected with the piston cavity 21 and provides compressed air into the piston cavity 21, so that the upper part of the piston end 31 is pressed to drive the inner rod main body 32 and the sampling end 33 to displace downwards, and sampling is completed.

The evacuation assembly 6 provides vacuum suction to the sampling end 33. In specific implementation, the vacuum pumping assembly 6 is a vacuum pump. The suction end of the vacuum pumping assembly 6 is provided with a sealing suction nozzle, and the sealing suction nozzle is pressed against the first suction hole 322. The vacuum pumping without leakage is achieved because of the mutual communication, and the vacuum pumping of the second vacuum chamber 331 is simultaneously accomplished. The cooperation of the second vacuum chamber 331 and the solenoid valve ensures the suction force for each vacuum sampling, and at the same time, accurately determines the sampling amount for each sampling.

Sampling end 33 lower extreme is equipped with the second suction hole, the second suction hole on be equipped with first stopple 332, first stopple 332 pass through elastic cord and sample end 33 inner wall connection. The third suction hole has been seted up to outer tube 2 lower extreme, the third suction hole on be equipped with second stopple 22, second stopple 22 pass through elastic cord and 2 inner wall connections of outer tube, when sample end 33 moves down, push down on second stopple 22 for second stopple 22 moves down, first stopple 332 shifts up, inhales the liquid sample through vacuum suction. The first plug 332 and the second plug 22 are both conical plugs.

In specific operation, the external controller sends an instruction to the compressor 5 to control the compressor to output compressed air to the piston cavity 21, the pressure gas in the piston cavity 21 pushes the piston end 31 to move downwards, at this time, the vacuum pumping assembly 6 has achieved vacuum pumping of the first vacuum cavity 321 and the second vacuum cavity 331, and the electromagnetic valve arranged between the first vacuum cavity 321 and the second vacuum cavity 331 is closed. When the sampling end 33 moves downwards, the lower end of the sampling end pushes the second hole plug 22 open, so that part of the reaction liquid flows into the outer tube 2, meanwhile, the first hole plug 332 moves upwards and opens, the pressure difference sucks the reaction liquid entering the outer tube 2, sampling is completed, at the moment, the external controller sends an instruction to the compressor 5, the compressor 5 stops outputting pressure air, the elasticity of the spring 4 rebounds the piston end 31, meanwhile, the sampling end 33 is driven to retract, the first hole plug 332 and the second hole plug 22 elastically reset, the first suction hole 322 is butted with the sealing suction nozzle again, the external controller sends an instruction to the electromagnetic valve, the electromagnetic valve opens, the extracted reaction liquid enters the first vacuum cavity 321 and is discharged by the output tube of the vacuumizing assembly 6, and the sampling process is completed. The sampling process has higher sampling efficiency, and the piston cavity 21 can finish the accumulation of the pressure air in a very short time; the first vacuum cavity 321 and the second vacuum cavity 331 automatically finish vacuumizing after sampling is finished each time, the vacuum degree can be kept in the descending sampling process, the vacuum degree is released until the target stroke is reached, sampling is finished, resetting can be finished through the resilience force of the spring 4 in the moment of finishing sampling, all the components are matched precisely, and a sampling period can be finished within 1-2S.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. A sampling device for a polymerizer, comprising:

the outer pipe (2) penetrates through the seal head (1) of the polymerization kettle and extends downwards to the interior of the polymerization kettle;

the inner rod (3) is sleeved in the outer tube (2) in a penetrating mode and comprises an inner rod main body (32), a piston end (31) arranged at the top of the inner rod main body (32) and a sampling end (33) arranged at the bottom of the inner rod main body (32), and the piston end (31) and the top end of the outer tube (2) form a piston cavity (21);

the spring (4) is fixed on the inner wall of the outer tube (2), and the piston end (31) is pressed against the upper end of the spring (4);

the compressor (5) is connected with the piston cavity (21) and provides compressed air into the piston cavity (21), so that the upper part of the piston end (31) is pressed to drive the inner rod main body (32) and the sampling end (33) to move downwards to finish sampling;

and a vacuum-pumping assembly (6) for providing vacuum suction to the sampling end (33).

2. The sampling device for the polymerizer according to claim 1, wherein the inner rod body (32) has a first vacuum chamber (321) formed therein, the sampling end (33) has a second vacuum chamber (331) formed therein, and the first vacuum chamber (321) communicates with the second vacuum chamber (331).

3. The sampling device for the polymerizer according to claim 2, wherein the inner rod body (32) has a first suction hole (322) formed in a sidewall thereof, and the first suction hole (322) is communicated with the first vacuum chamber (321).

4. A sampling device for polymerizers, according to claim 3, wherein the suction end of the vacuum pumping assembly (6) is provided with a sealing nozzle which is pressed against the first suction hole (322);

the output end of the vacuumizing assembly (6) is provided with an output pipe.

5. A sampling device for a polymerizer, according to claim 4, wherein the lower end of the sampling end (33) is provided with a second suction hole, the second suction hole is provided with a first plug (332), and the first plug (332) is connected with the inner wall of the sampling end (33) through an elastic cord.

6. The sampling device for the polymerization kettle according to claim 5, wherein a third suction hole is formed at the lower end of the outer tube (2), a second hole plug (22) is arranged on the third suction hole, the second hole plug (22) is connected with the inner wall of the outer tube (2) through an elastic rope, when the sampling end (33) moves downwards, the sampling end presses down on the second hole plug (22), so that the second hole plug (22) moves downwards, the first hole plug (332) moves upwards, and a liquid sample is sucked by vacuum suction.

7. A sampling device for polymerizers as claimed in claim 6, wherein each of the first plug (332) and the second plug (22) is a conical plug.

8. A sampling device for polymerization tanks according to claim 1 characterized in that the vacuum pumping assembly (6) is a vacuum pump.

9. A sampling device for polymerizers, according to claim 1, wherein spring mount (23) is provided in outer tube (2), and the lower end of spring (4) is pressed against spring mount (23).