Sampling device for chemical product processing

Abstract

The utility model relates to the technical field of sampling tools, and particularly discloses a sampling device for chemical product processing, which comprises a sampling barrel and a sampling piston rod mechanism, the piston rod mechanism comprises a piston rod and a piston head, the top of the piston rod is in threaded connection with a sealing cover, a spring is embedded in the middle of the piston rod, and an outer sleeve is fixedly arranged outside the sampling barrel. A platform base is fixedly arranged at the top of the outer sleeve through a support, and an air bag is fixedly arranged at the bottom of the platform base and communicated with an air valve through a pipeline. According to the technical scheme, the air bag is inflated to press the piston rod to descend and press the spring to be compressed, the thin-head barrel of the sampling barrel is inserted into a chemical solution to be sampled, the air bag is deflated through the air valve, the piston rod is lifted through resilience force of the spring, and the chemical solution can be automatically pumped into the sampling barrel; and the effect of remotely and safely completing sampling operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling tools, in particular to a sampling device for chemical product processing. Background Technique

[0002] The production of styrene polymerization inhibitor requires the use of a reaction kettle to meet the safe and sufficient mixing reaction of various raw material solvents. When the finished polymerization inhibitor is completed, a part of the product needs to be sampled for testing, and it can only be packaged and stored after passing the test. Since the sample is easily inside the reaction kettle, a traditional sampler needs to be inserted into the reaction kettle to extract the sample. When the sampler is inside the reaction kettle, it is inconvenient to control the movement of the piston rod of the sampler. If an electric push rod is designed on the sampler to remotely control the movement of the piston rod, the weight of the sampler will be greatly increased, and the operation difficulty will also increase. Therefore, improvement is urgently needed. For this reason, we propose a sampling device for chemical product processing. Content of the Utility Model

[0003] The purpose of the utility model is to provide a sampling device for chemical product processing, which solves the problems mentioned in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A sampling device for chemical product processing, including a sampling cylinder and a sampling piston rod mechanism. The piston rod mechanism includes a piston rod and a piston head. The top of the piston rod is threadedly connected with a sealing cover. A spring is embedded in the middle of the piston rod. An outer sleeve is fixedly arranged outside the sampling cylinder. A platform seat is fixedly arranged at the top of the outer sleeve through a bracket. An airbag is fixedly arranged at the bottom of the platform seat. The airbag is connected with a gas valve through a pipeline.

[0005] As a preferred implementation mode of the technical solution of this application, a seat body for fixing the airbag is fixedly arranged at the bottom of the platform seat. A concave hole is opened at the center position of the bottom of the seat body. The surface of the airbag is fixed in the concave hole.

[0006] As a preferred implementation mode of the technical solution of this application, one end of the pipeline sequentially penetrates through the platform seat and the seat body, and one end of the pipeline is communicated with the airbag, and the other end of the pipeline is communicated with the gas valve.

[0007] As a preferred implementation mode of the technical solution of this application, a threaded rod is fixedly arranged at the top of the piston rod. A threaded hole matching the threaded rod is opened in the middle of the sealing cover.

[0008] As a preferred implementation mode of the technical solution of this application, the spring is clamped between the top end of the sampling cylinder and the bottom end of the sealing cover.

[0009] As a preferred implementation mode of the technical solution of this application, the platform seat is directly above the sealing cover, and the airbag is located between the sealing cover and the platform seat.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] In the technical solution of the present application, the airbag is inflated to press the piston rod to descend and compress the spring. The thin head cylinder of the sampling cylinder is inserted into the chemical solution to be sampled. The airbag is deflated through the air valve, and the resilience of the spring causes the piston rod to lift, so that the chemical solution can be automatically pumped into the sampling cylinder, achieving the effect of safely completing the sampling operation at a long distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present utility model will become more apparent:

[0013] Figure 1 Structural schematic diagram of the sampling device when the airbag is inflated;

[0014] Figure 2 Structural schematic diagram of the sampling device when the airbag is deflated;

[0015] Figure 3 Cross-sectional view of the sampling cylinder.

[0016] In the figure: 1. Sampling cylinder; 101. Thin head cylinder; 2. Outer sleeve body; 3. Spring; 4. Sealing cover; 401. Piston rod; 402. Piston head; 5. Airbag; 6. Platform seat; 7. Pipeline; 8. Air valve; 9. Seat body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0018] Embodiment 1, as Figures 1-3 shown, the present utility model provides a technical solution: a sampling device for chemical product processing, including a sampling cylinder 1 and a sampling piston rod mechanism. The piston rod mechanism includes a piston rod 401 and a piston head 402. The top of the piston rod 401 is threadedly connected with a sealing cover 4. A spring 3 is embedded in the middle of the piston rod 401. An outer sleeve body 2 is fixedly arranged outside the sampling cylinder 1. A platform seat 6 is fixedly arranged at the top of the outer sleeve body 2 through a bracket. An airbag 5 is fixedly arranged at the bottom of the platform seat 6. The airbag 5 is communicated with an air valve 8 through a pipeline 7.

[0019] In a specific embodiment of the present utility model, the exhaust port of the air valve 8 is also set as an inflation port. When the exhaust port of the air valve 8 is connected to an air pump, air flow enters the airbag 5 through the pipeline 7 for inflation, thereby making the volume of the airbag 5 increase. When the air valve 8 is closed in time, the volume of the airbag 5 remains unchanged. At this time, the enlarged airbag 5 causes the entire piston rod 401 to descend by 5 cm, and the spring 3 is in a compressed energy storage state. The pipeline 7 is set to 2 m. The sampling cylinder 11 is vertically placed into the reaction kettle as a whole until the thin head cylinder 101 provided at the end of the sampling cylinder 1 contacts the solution. At this time, the air valve 8 can be controlled to open, and the gas inside the airbag 5 quickly discharges along the pipeline 7, and the volume of the airbag 5 gradually decreases. The resilience of the spring 3 causes the piston rod 401 to lift. Since the piston rod 401 drives the piston head 402 to lift along the inner wall of the sampling cylinder 1, a negative pressure is generated in the thin head cylinder 101 at this time, thereby sampling the chemical solution. When the sampled sample needs to be taken out of the sampling cylinder 1 subsequently, only the cover 4 needs to be disassembled to remove the spring 3, and the piston rod 401 is pressed so that the piston head 402 descends along the inner wall of the sampling cylinder 1, and the sampled sample can be taken out.

[0020] In the preferred technical solution, a seat body 9 for fixing the airbag 5 is fixedly arranged at the bottom of the platform seat 6. A concave hole is opened at the center position of the bottom of the seat body 9, and the surface of the airbag 5 is fixed in the concave hole. The concave hole of the seat body 9 is used to fit the inflated airbag 5 to improve the stability of the assembly of the airbag 5.

[0021] In the preferred technical solution, one end of the pipeline 7 sequentially penetrates through the platform seat 6 and the seat body 9, and one end of the pipeline 7 is communicated with the airbag 5, and the other end of the pipeline 7 is communicated with the air valve 8. The pipeline 7 is used to connect the air valve 8 and the airbag 5. The air valve 8 can cooperate with the air pump to inflate the airbag 5, and the air valve 8 can also be used for deflating the airbag 5.

[0022] In the preferred technical solution, a threaded rod is fixedly arranged at the top of the piston rod 401, and a threaded hole matching the threaded rod is opened in the middle of the cover 4 to realize the detachable assembly of the piston rod 401 and the cover 4, which is convenient for the installation and disassembly of the spring 3.

[0023] In the preferred technical solution, the spring 3 is clamped between the top end of the sampling cylinder 1 and the bottom end of the cover 4. The platform seat 6 is located directly above the cover 4, and the airbag 5 is located between the cover 4 and the platform seat 6. The spring 3 is used for energy storage when the airbag 5 is inflated, and the elastic reset of the spring 3 is used to complete the sampling of chemical products after the airbag 5 is deflated.

[0024] To sum up, this embodiment is improved based on the traditional syringe, and a cooperative structure of the spring 3 and the airbag 5 is adopted to realize remote control for opening and sampling. The whole device does not require electric control, reduces the overall operation difficulty, and at the same time reduces the overall structural complexity and weight, and can easily manipulate the device to extend into the reaction kettle for remote sampling of solution products.

Claims

1. A sampling device for chemical product processing, characterized in that: The invention comprises a sampling cylinder (1) and a sampling piston rod mechanism, wherein the piston rod mechanism comprises a piston rod (401) and a piston head (402), wherein a sealing cap (4) is threadedly connected to the top of the piston rod (401), and a spring (3) is embedded in the middle of the piston rod (401), an outer sleeve (2) is fixedly arranged on the outside of the sampling cylinder (1), a platform seat (6) is fixedly arranged on the top of the outer sleeve (2) via a bracket, an air bag (5) is fixedly arranged on the bottom of the platform seat (6), and the air bag (5) is connected to an air valve (8) via a pipeline (7).

2. A sampling device for chemical product processing according to claim 1, characterized in that: A seat body (9) for fixing the airbag (5) is fixedly arranged at the bottom of the platform seat (6), and a concave hole is opened at the center of the bottom of the seat body (9), and the surface of the airbag (5) is fixed in the concave hole.

3. A sampling device for chemical product processing according to claim 2, characterized in that: One end of the pipeline (7) passes through the platform seat (6) and the seat body (9) in sequence, one end of the pipeline (7) is connected to the air bag (5), and the other end of the pipeline (7) is connected to the air valve (8).

4. A sampling device for chemical product processing according to claim 1, characterized in that: A threaded rod is fixedly arranged on the top of the piston rod (401), and a threaded hole matching the threaded rod is opened in the middle of the cover (4).

5. A sampling device for chemical product processing according to claim 1, characterized in that: The spring (3) is clamped between the top end of the sampling tube (1) and the bottom end of the sealing cover (4).

6. A sampling device for chemical product processing according to claim 1, characterized in that: The platform seat (6) is located directly above the cover (4), and the air bag (5) is located between the cover (4) and the platform seat (6).

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