Environment-friendly closed glue solution sampling device

Abstract

The environment-friendly closed glue solution sampling device comprises a main pipeline and a sampling assembly, the sampling assembly comprises a sampling tank and a sampling pipeline, the two ends of the sampling pipeline are connected with the main pipeline, the sampling tank comprises a tank body, a sampling cup, a sampling bag and a base, and the bottom of the tank body is open; a sampling pipeline is arranged on the tank body, a sample feeding pipeline and a sample discharging pipeline are arranged on the tank body, the sample feeding pipeline and the sample discharging pipeline are connected with the sampling pipeline, the sampling cup is arranged on the base, the sampling bag is arranged in the sampling cup, and a necking component is arranged on a bag opening of the sampling bag. Compared with the prior art, more environment-friendly, safer and more efficient glue solution sampling can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of glue sampling, and particularly relates to an environmentally friendly and airtight glue sampling device. Background Art

[0002] In the chemical industry, for the collection of glue samples in pipelines, the current commonly used method is the open manual sampling method. The specific process is as follows: Before sampling, the sampler opens the manual ball valve to discharge the residual waste glue in the pipeline above the manual ball valve. When it is observed that the residual waste glue in the pipeline has basically drained out and fresh glue begins to flow out, a special sampling bag for sampling is connected to the pipeline port at the lower end of the ball valve, and a part of the fresh glue is collected as the final sample. After sampling, the manual ball valve is closed.

[0003] However, there are a series of problems with the existing sampling process. On the one hand, before sampling, there is residual waste glue in the pipeline that was not completely discharged last time. A certain amount of waste glue needs to be manually discharged before fresh glue can be intercepted. Moreover, the amount of waste glue discharged is relatively large, and the toxic solvent components contained therein make the environmental protection treatment of these waste glues cumbersome and costly.

[0004] On the other hand, in the sample collection link, when the number of samples to be collected is large, the operator will inevitably come into contact with the samples. The harmful gases generated by the volatilization of the solvent in the glue will cause damage to the physical health of the operator. At the same time, due to the flammable and explosive characteristics of the solvent in the glue, if the operator has static electricity on their hands, it is extremely easy to cause a safety accident, posing a great safety hazard.

[0005] In summary, the current manual sampling method for glue samples in the chemical industry has obvious deficiencies in aspects such as waste glue treatment and operator safety, and urgent improvement and optimization are needed to achieve more environmentally friendly, safe, and efficient glue sampling, reduce the trouble of waste glue treatment, ensure the health and safety of operators, and avoid the occurrence of safety accidents.

[0006] In view of this, a special environmentally friendly and airtight glue sampling device is proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide an environmentally friendly and airtight glue sampling device to solve the problems pointed out in the background art.

[0008] The above technical purpose of the present invention is achieved through the following technical solutions:

[0009] An environmentally friendly sealed glue liquid sampling device includes a main pipeline and a sampling assembly. The sampling assembly includes a sampling tank and a sampling pipeline. The two ends of the sampling pipeline are connected to the main pipeline. The sampling tank includes a tank body, a sampling cup, a sampling bag and a base. The bottom of the tank body is open. The tank body is provided with a sample inlet pipeline and a sample outlet pipeline. The sample inlet pipeline and the sample outlet pipeline are connected to the sampling pipeline. The sampling cup is arranged on the base, and the sampling bag is arranged in the sampling cup. A necking member is provided at the bag mouth of the sampling bag.

[0010] In a preferred embodiment, the sampling pipeline includes a first control valve, a second control ball valve, a first valve, a second valve, a third valve, a fifth valve, a sampling pump, a three-way valve, a first sampling branch pipe, a second sampling branch pipe and a third sampling branch pipe. The two ends of the first sampling branch pipe are respectively connected to the main pipeline. The two ends of the second sampling branch pipe are respectively connected to the first sampling branch pipe. The two ends of the third sampling branch pipe are respectively connected to the first sampling branch pipe and the second sampling branch pipe. The first control valve, the first ball valve, the third ball valve and the second control valve are sequentially arranged on the first sampling branch pipe. The three-way valve and the second valve are sequentially arranged on the second sampling branch pipe. The sampling pump is arranged on the third sampling branch pipe. The connection point of one end of the second sampling branch pipe and the first sampling branch pipe is located between the first control valve and the first valve, and the connection point of the other end and the first sampling branch pipe is located between the third valve and the second control valve. The connection point of the third sampling branch pipe and the first sampling branch pipe is located between the first valve and the second valve. The connection point of the third sampling branch pipe and the second sampling branch pipe and the second valve are respectively located on both sides of the three-way valve. The three-way valve is connected to the sample inlet pipeline, the sample outlet pipeline is connected to the second sampling branch pipe, and the fifth valve is arranged on the sample outlet pipeline.

[0011] In a preferred embodiment, it further includes a fourth valve. The fourth valve is arranged on the second sampling branch pipe. The connection point of the third sampling branch pipe and the second sampling branch pipe is located between the fourth valve and the fifth valve.

[0012] In a preferred embodiment, the first sampling valve and the second sampling valve are set as manual ball valves, and the first valve, the second valve, the third valve, the fourth valve and the fifth valve are all set as ball valves.

[0013] In a preferred embodiment, a pressure relief pipeline is provided on the tank body. The pressure relief pipeline is connected to the tank body, and a pressure relief valve and a gas filter are provided on the pressure relief pipeline.

[0014] In a preferred embodiment, a condensation member is provided in the sampling tank.

[0015] In a preferred embodiment, the necking member includes a plurality of elastic cords and a plurality of rigid movable blocks. The plurality of elastic cords are sleeved on the inner side of the mouth of the sampling bag by a first loop, and the plurality of rigid movable blocks are sleeved on the inner side of the mouth of the sampling bag by a second loop and are located below the plurality of elastic cords. The rigid movable block has an arched surface that extends from the upper end to the lower end of the movable block.

[0016] In a preferred embodiment, both the first loop and the second loop are arranged longitudinally, and their upper and lower ends are respectively connected to the sampling bag. The first loop surrounds the plurality of elastic cords, and the rigid movable block is provided with a threading hole through which the second loop passes.

[0017] In a preferred embodiment, the arched surface includes a first arc surface and a second arc surface. The first arc surface is located above the second arc surface, and the radian of the first arc surface is greater than that of the second arc surface.

[0018] In a preferred embodiment, a guiding piece is provided on the arched surface. The guiding piece is arranged obliquely downward and includes a plurality of guiding strips.

[0019] Compared with the prior art, the present invention provides an environment-friendly and airtight glue liquid sampling device. Both ends of the sampling pipeline in the sampling assembly are connected to the main pipeline, providing a passage for the flow of the glue liquid. The sampling tank includes a tank body, a sampling cup, a sampling bag, and a base. The bottom of the tank body is open and is provided with a sample inlet pipeline and a sample outlet pipeline connected to the sampling pipeline. The sampling cup is placed on the base, and the sampling bag is placed in the sampling cup. The necking member at the mouth of the bag can prevent the glue liquid from spilling.

[0020] During the sampling process, the device uses the flow of the glue liquid in the sampling pipeline to flush the residual waste glue in the main pipeline back into the main pipeline by the fresh glue liquid. After a certain period of flow, it ensures that the entire pipeline is filled with fresh glue liquid, avoiding the problem of waste glue discharge treatment. Subsequently, the sample inlet pipeline and the sample outlet pipeline are opened, and the glue liquid flows into the sampling bag in the sampling tank under the action of pressure. During this process, as the glue liquid continuously enters, the air in the sampling tank is compressed. When the pressure of the flowing glue liquid reaches equilibrium with the air pressure in the tank, the glue liquid stops flowing in, achieving automatic quantitative sampling, which not only improves the sampling efficiency but also avoids waste and pollution caused by the overflow of the glue liquid.

[0021] In terms of the operation and use of the sampling tank, the tank body is fixedly installed, and the base is set on the lifting platform. In the initial state, the lifting platform is at a low position, which is convenient for the operator to put the sampling bag on the sampling cup. Subsequently, the lifting platform is controlled to rise, so that the sampling cup is inserted into the tank body, and a seal is formed between the base and the tank body, ensuring that the sampling process is carried out in a closed environment, effectively blocking the harm of the volatilization of the glue solution solvent to the operator, and at the same time eliminating the potential safety hazards caused by static electricity. After the sampling is completed, the lifting platform is controlled to descend, and the sampling cup is separated from the tank body, and then the sampling bag can be easily taken out. The whole sampling process is coherent, smooth and convenient to operate.

[0022] Through the above structure and working principle, the environmentally friendly and airtight glue solution sampling device realizes the airtight, efficient and automatic sampling of the glue solution, solves the problem of waste glue treatment, guarantees the health and safety of the operator, and significantly improves the environmental protection and safety of glue solution sampling in the chemical industry. Brief Description of the Drawings

[0023] Figures 1 to 4 It is a schematic diagram of the external structure of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0024] Figures 5 to 6 It is a schematic diagram of the internal structure of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the sampling tank of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0026] Figure 8 It is a schematic diagram of the working principle of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0027] Figure 9 It is a schematic diagram of taking a small sample of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0028] Figure 10 It is a schematic diagram of the first condensation method of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0029] Figure 11 It is a schematic diagram of the second condensation method of an environmentally friendly and airtight glue solution sampling device involved in the present invention.

[0030] Figure 12 It is a schematic diagram of the cooperation state of the sampling cup and the sampling bag of an environmentally friendly and airtight glue solution sampling device involved in the present invention (the bag mouth of the sampling bag is reversely sleeved on the cup mouth of the sampling cup).

[0031] Figure 13 It is Figure 12 an enlarged schematic diagram of part A in

[0032] Figure 14It is a schematic diagram of the state of the sampling bag of an environmentally friendly sealed glue liquid sampling device of the present invention after sampling is completed.

[0033] Figure 15 It is a schematic diagram of the hard movable block of an environmentally friendly sealed glue liquid sampling device of the present invention in the retracted state.

[0034] Figure 16 It is a schematic diagram of the structure of the hard movable block of an environmentally friendly sealed glue liquid sampling device of the present invention.

[0035] In the figure

[0036] 1. Sampling window; 2. Operation panel; 3. Electrostatic discharger; 4. Cup preparation platform; 5. Pump maintenance window; 6. Sampling tank; 8. Sampling pump; 9. Cooling water outlet; 10. Cooling water inlet; 11. Glue liquid sampling outlet; 12. Solvent inlet; 13. Glue liquid injection inlet; 14. Two-piece; 15. Flow observation window; 16. Pressure relief outer port; 17. Gas filter; 18. Gas source inlet; 19. Wiring harness inlet; 20. Electric box; 21. Worm gear lift; 22. Pneumatic control box; 23. Upper limit switch of the lifting platform; 24. Lifting guide rail; 25. Base; 26. Lower limit switch of the lifting platform; 27. Door control switch; 28. Three-way valve; 29. Cooling water control ball valve; 30. Third valve; 31. Fourth valve; 32. First valve; 33. Explosion-proof clamp flange sight glass; 34. Fifth valve; 35. Second valve; 36. Pressure relief valve; 37. Injection pipeline; 38. Pressure relief port; 39. Sampling pipeline; 40. Tank body; 41. Sampling cup; 42. Sealing ring; 43. Condensation water tank; 44. Water tank support; 49. Condensation pipe; 50. Sampling bag; 51. Elastic cord; 52. Second loop; 53. Hard movable block; 54. Threading hole; 55. First arc surface; 56. Second arc surface; 57. Guide piece; 58. Guide bar; 59. First control valve; 60. Second control valve; 61. First sampling branch pipe; 62. Second sampling branch pipe; 63. Third sampling branch pipe; 64. Pressure relief pipeline; 65. Main pipeline. Detailed implementation manners

[0037] The present invention will be further described in detail below with reference to the accompanying drawings.

[0038] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0039] As Figures 1 to 16As shown in the figure, an environmentally friendly sealed glue liquid sampling device includes a main pipeline 65 and a sampling assembly. The sampling assembly includes a sampling tank 6 and a sampling pipeline. Both ends of the sampling pipeline are connected to the main pipeline 65. The sampling tank 6 includes a tank body 40, a sampling cup 41, a sampling bag 50 and a base 25. The bottom of the tank body 40 is open. An inlet pipeline 37 and an outlet pipeline 39 are provided on the tank body 40. The inlet pipeline 37 and the outlet pipeline 39 are connected to the sampling pipeline. The sampling cup 41 is arranged on the base 25. The sampling bag 50 is arranged in the sampling cup 41. A necking member is provided at the mouth of the sampling bag 50.

[0040] For an environmentally friendly sealed glue liquid sampling device in this embodiment, both ends of the sampling pipeline in the sampling assembly are connected to the main pipeline 65, providing a path for the flow of the glue liquid; the sampling tank 6 includes a tank body 40, a sampling cup 41, a sampling bag 50 and a base 25. The bottom of the tank body 40 is open, and an inlet pipeline 37 and an outlet pipeline 39 are provided and connected to the sampling pipeline. The sampling cup 41 is placed on the base 25, and the sampling bag 50 is placed in the sampling cup 41. The necking member at the bag mouth can prevent the glue liquid from spilling.

[0041] During the sampling process, the device utilizes the flow of the glue liquid in the sampling pipeline to flush the residual waste glue in the main pipeline 65 back into the main pipeline 65 by the fresh glue liquid. After a certain period of flow, it ensures that the entire pipeline is filled with fresh glue liquid, avoiding the problem of waste glue discharge treatment. Subsequently, the inlet pipeline 37 and the outlet pipeline 39 are opened, and the glue liquid flows into the sampling bag 50 in the sampling tank 6 under the action of pressure. During this process, as the glue liquid continuously enters, the air in the sampling tank 6 is compressed. When the pressure of the flowing-in glue liquid reaches equilibrium with the air pressure in the tank, the glue liquid stops flowing in, achieving automatic quantitative sampling, which not only improves the sampling efficiency but also avoids the waste and pollution caused by the overflow of the glue liquid.

[0042] Regarding the operation and use of the sampling tank 6, the tank body 40 is fixedly arranged, and the base 25 is arranged on a lifting platform. In the initial state, the lifting platform is at a low position, which is convenient for the operator to put the sampling bag 50 on the sampling cup 41. Subsequently, the lifting platform is controlled to rise, so that the sampling cup 41 is inserted into the tank body 40, and a seal is formed between the base 25 and the tank body 40, ensuring that the sampling process is carried out in a sealed environment, effectively blocking the harm of the volatilization of the glue liquid solvent to the operator, and at the same time eliminating the potential safety hazards caused by static electricity. After the sampling is completed, the lifting platform is controlled to descend, and the sampling cup 41 is separated from the tank body 40, and the sampling bag 50 can be easily taken out. The entire sampling process is coherent and smooth, and the operation is convenient.

[0043] Through the above structure and working principle, the environmentally friendly sealed glue liquid sampling device realizes the sealed, efficient and automatic sampling of the glue liquid, solves the problem of waste glue treatment, and ensures the health and safety of the operator, significantly improving the environmental protection and safety of glue liquid sampling in the chemical industry.

[0044] Specifically, the sampling pipeline includes a first control valve 59, a second control ball valve, a first valve 32, a second valve 35, a third valve 30, a fifth valve 34, a sampling pump 8, a three-way valve 28, a first sampling branch pipe 61, a second sampling branch pipe 62, and a third sampling branch pipe 63. Both ends of the first sampling branch pipe 61 are respectively connected to the main pipeline 65. Both ends of the second sampling branch pipe 62 are respectively connected to the first sampling branch pipe 61. Both ends of the third sampling branch pipe 63 are respectively connected to the first sampling branch pipe 61 and the second sampling branch pipe 62. The first control valve 59, the first ball valve, the third ball valve, and the second control valve 60 are sequentially arranged on the first sampling branch pipe 61. The three-way valve 28 and the second valve 35 are sequentially arranged on the second sampling branch pipe 62. The sampling pump 8 is arranged on the third sampling branch pipe 63. The connection point between one end of the second sampling branch pipe 62 and the first sampling branch pipe 61 is located between the first control valve 59 and the first valve 32, and the connection point between the other end and the first sampling branch pipe 61 is located between the third valve 30 and the second control valve 60. The connection point between the third sampling branch pipe 63 and the first sampling branch pipe 61 is located between the first valve 32 and the second valve 35. The connection point between the third sampling branch pipe 63 and the second sampling branch pipe 62 and the second valve 35 are respectively located on both sides of the three-way valve 28. The three-way valve 28 is connected to the sample injection pipeline 37, and the sample output pipeline 39 is connected to the second sampling branch pipe 62. The fifth valve 34 is arranged on the sample output pipeline 39.

[0045] Under the above pipeline arrangement, at the beginning of the sampling stage, the third valve 30 and the fifth valve 34 are closed, and the first control valve 59, the second control valve 60, the first valve 32, the sampling pump 8, and the second valve 35 are opened. The residual waste glue inside the pipeline is flushed clean with fresh glue, effectively avoiding the problem of waste glue discharge treatment and reducing the environmental pollution risk. After flushing for a period of time, the three-way valve 28 is switched and the fifth valve 34 is opened to enable the glue to smoothly enter the sampling tank 6 for airtight sampling.

[0046] During the airtight sampling process, due to the airtight characteristic of the sampling tank 6, as the glue continuously flows in, the air inside the tank is compressed. When the air pressure inside the tank reaches equilibrium with the glue pressure, the glue height no longer rises and maintains at a certain liquid level, thus realizing automatic quantitative sampling without the need for manual monitoring. This not only improves the sampling efficiency but also avoids waste and pollution caused by glue overflow.

[0047] After sampling is completed, close the second valve 35 and the first valve 32. At the same time, open the third valve 30 and reverse the sampling pump 8. At this time, the adhesive liquid is drawn out under the action of reverse suction. When the liquid level of the adhesive liquid drops below the sample outlet, the adhesive liquid is no longer drawn out, ensuring that the sampling volume of the adhesive liquid is basically the same each time, and guaranteeing the accuracy and stability of sampling.

[0048] An environmentally friendly and airtight adhesive liquid sampling device of this embodiment further includes a fourth valve 31. The fourth valve 31 is arranged on the second sampling branch pipe 62. The connection point of the third sampling branch pipe 63 and the second sampling branch pipe 62 is located between the fourth valve 31 and the fifth valve 34. The fourth valve 31 is used for reservation. When providing a pressure difference for an external pipeline, the fourth valve 31 can be used instead of the first valve 32. If there is no pressure difference in the main adhesive liquid pipeline 65 on-site, then the pressure difference can be provided by the pump in the device for sampling; if there is a pressure difference in the on-site pipeline itself (there is a pump on the main pipeline 65), this device can also perform sampling, and the switching is carried out through the first valve 32 and the fourth valve 31, which is controlled by the sampling program.

[0049] Specifically, the first sampling valve and the second sampling valve are set as manual ball valves, and the first valve 32, the second valve 35, the third valve 30, the fourth valve 31, and the fifth valve 34 are all set as ball valves.

[0050] A pressure relief pipeline 64 is provided on the tank body 40. The pressure relief pipeline 64 is connected to the tank body 40. A pressure relief valve 36 and a gas filter 17 are provided on the pressure relief pipeline 64. During the airtight sampling process, the adhesive liquid enters the tank body 40 under the action of the pump pressure, compressing the air in the tank to form a relatively high pressure. If the pressure is not released and the tank body 40 is directly opened, the high-pressure adhesive liquid will spurt out, which will not only cause waste of the adhesive liquid but also pose a threat to the safety of the operators. The pressure relief pipeline 64 set in the present invention can safely and orderly release the pressure in the tank through the precise control of the pressure relief valve 36. Before releasing the pressure, the operator only needs to open the pressure relief valve 36, and the high-pressure gas in the tank can be discharged through the pressure relief pipeline 64, gradually reducing the pressure in the tank to a safe level, thus avoiding the spurt of the adhesive liquid and ensuring the safe progress of the sampling operation. In addition, the gas filter 17 connected to the pressure relief pipeline 64 further enhances the environmental protection performance of the device. The solvent in the adhesive liquid is volatile, and during the pressure relief process, the discharged gas may carry harmful substances. The gas filter 17 can effectively intercept and filter these harmful components, preventing them from being discharged into the atmosphere to cause environmental pollution and ensuring that the discharged gas meets the environmental protection standards.

[0051] Furthermore, a condensing member is provided in the sampling tank 6 for cooling the adhesive liquid. In this embodiment, there are two ways to set the condensing member. One way is to make a condensing water tank 43 at the bottom of the sampling tank, which can also solve the problem that the condensing water tank 43 is directly inserted into the adhesive liquid, resulting in adhesive liquid residue. The condensing water tank 43 does not directly contact the adhesive liquid, solving the residue problem. At the same time, the water tank protrudes to the center of the sampling bag 50, which can accelerate the condensing efficiency. Another way is to set 49 condensing pipes on the tank body 40. During sampling, the condensing pipes 49 are inserted into the sampling bag 50. Through the setting of the condensing member, the high-temperature adhesive liquid at 50-90 °C is cooled, effectively solving the problem of solvent volatilization of the adhesive liquid, reducing harmful gas emissions, ensuring the health and safety of operators, and at the same time reducing the risk of environmental pollution.

[0052] In this embodiment, in order to control the sampling volume, it can be carried out in the following way. In the case of adopting the first condensing method, the sampling volume can be determined by changing the height of the sampling cup 41. After sampling is completed, the sample is pumped back by the sampling pump until the adhesive liquid is pumped below the pipeline. In the case of adopting the second condensing method, the sampling pipeline 37 and the sampling outlet pipeline 39 are set as members with different lengths. According to the requirements, the device will start the pump and open the corresponding valves to pump out a part of the adhesive liquid in the tank. The short pipeline sampling is used to quantify a large sample volume, and the long pipeline sampling is used to quantify a small sample volume.

[0053] The necking component can be set in various forms, for example, it can be set as a sealing zipper. In the present embodiment, the necking component includes a plurality of elastic ropes 51 and a plurality of hard movable blocks 53. The plurality of elastic ropes 51 are arranged on the inner side of the bag opening of the sampling bag 50 by means of a first ring sleeve, and the plurality of hard movable blocks 53 are arranged on the inner side of the bag opening of the sampling bag 50 by means of a second ring sleeve 52, and are located below the plurality of elastic ropes 51. The hard movable block 53 has an arched surface, and the arched surface extends from the upper end of the movable block to the lower end. When in use, first put the sampling bag 50 into the sampling cup 41, and then flip the bag mouth of the sampling bag 50 so that the bag mouth of the sampling bag 50 is reversely put on the cup mouth of the sampling cup 41. At this time, multiple elastic ropes 51 and multiple hard movable blocks 53 are flipped to the outside of the cup mouth, the hard movable block 53 is turned upside down, and the elastic rope 51 is flipped to the bottom of the hard movable block 53. When flipping the bag mouth, the hard movable block 53 is controlled to protrude from the cup mouth. After the sampling bag 50 is placed, the sampling cup 41 is raised, the sampling cup 41 is raised, the cup mouth of the sampling cup 41 abuts against the inner top wall of the tank body 40, and the tank body 40 abuts against the hard movable block 53 to descend. During the process of the hard movable block 53 descending, due to the setting of the arched surface, the arched elastic rope 51 moves from the lower end of the flipped hard movable block 53 to the upper end under the guidance of the arched surface, so that the multiple elastic ropes 51 are respectively located at the upper and lower ends of the hard movable block 53. At both ends, when the sampling cup 41 descends, due to the action of the elastic rope 51 located at the upper end of the hard movable block 53, the bag mouth shrinks and withdraws from the cup mouth, and multiple elastic ropes 51 realize automatic shrinkage of the bag mouth. Therefore, through such a structural setting, the bag mouth can be automatically shrunk when the sampling is completed, which further improves the environmental protection and convenience of operation of the sampling process. After the shrinking is completed, the setting position of the shrinking component forms a structure that is easy to grasp, which is convenient for the operator to lift the sampling bag 50.

[0054] Furthermore, the first ring sleeve and the second ring sleeve 52 are both arranged longitudinally, and the upper and lower ends are respectively connected to the sampling bag 50, the first ring sleeve surrounds the plurality of elastic ropes 51, and the hard movable block 53 is provided with a threading hole 54, and the second ring sleeve 52 passes through the threading hole 54.

[0055] Specifically, the arched surface includes a first arc surface 55 and a second arc surface 56, wherein the first arc surface 55 is located above the second arc surface 56, and the curvature of the first arc surface 55 is greater than that of the second arc surface 56. By setting the second arc surface 56 with a large curvature, the elastic cord 51 can pass over its highest point when the hard movable block 53 has a short stroke, and by setting the first arc surface 55 with a small curvature, the elastic cord 51 that has passed the highest point can be pushed to a farther place, thereby better exerting its automatic shrinking function.

[0056] Further, a guiding piece 57 is provided on the arched surface. The guiding piece 57 is arranged obliquely downward and includes a plurality of guiding bars 58. Through the arrangement of the guiding bars 58, the elastic cord 51 that crosses over the highest point of the rigid movable block 53 is prevented from retracting. At the same time, after necking-down is completed, a plurality of guiding pieces 57 formed by the plurality of guiding bars 58 form a one-way channel structure, which prevents the volatilization of the glue liquid components, but facilitates sampling from the sampling bag 50.

[0057] As a further illustration, outside an environmental protection airtight glue liquid sampling device of this embodiment, there are a sampling window 1, an operation panel 2, an electrostatic discharger 3, a cup preparation platform 4, a pump maintenance window 5, a sampling pump 8, a cooling water outlet 9, a cooling water inlet 10, a glue liquid sampling outlet 11, a solvent inlet 12, a glue liquid injection inlet 13, a union 14, a flow observation window 15, a pressure relief outer port 16, a filter box, a gas source inlet 18, and a wire harness inlet 19. Inside, there are an electrical box 20, a worm gear lift 21, a pneumatic control box 22, an upper limit switch 23 for the lifting platform, a lifting guiding slide rail 24, a sampling tank 6, a lower limit switch 26 for the lifting platform, a door control switch 27, a three-way valve 28, a cooling water control ball valve 29, a third valve 30, a fourth valve 31, a first valve 32, an explosion-proof wafer-type sight glass flange 33, a fifth valve 34, a second valve 35, and a pressure relief valve 36.

[0058] The structure of the sampling tank 6 includes a sample injection pipeline 37, a pressure relief port 38, a sample outlet pipeline 39, the sampling tank 6, a sampling cup 41, a sealing ring 42, and a condensation water tank 43. The condensation water tank 43 is vertically provided with a tank support member 44, a cooling water inlet 10, and a cooling water outlet 9. The setting of the condensation water tank 43 is the first condensation scheme. Under the second condensation scheme, the sampling tank 6 further includes a condensation pipe 49.

[0059] It should be noted that in this article, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, elements defined by the statement "including..." or "comprising..." do not exclude the existence of additional elements in the process, method, article or terminal device including the said elements. In addition, in this article, "greater than", "less than", "exceeding", etc. are understood not to include the present number; "above", "below", "within", etc. are understood to include the present number.

[0060] The above description of the embodiments is to facilitate the understanding and use of the present invention by those of ordinary skill in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present invention is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present invention should be within the protection scope of the present invention according to the disclosure of the present invention.

Claims

1. An environmentally friendly sealed glue liquid sampling device, characterized in that, It includes a main pipeline and a sampling assembly. The sampling assembly includes a sampling tank and a sampling pipeline. Both ends of the sampling pipeline are connected to the main pipeline. The sampling tank includes a tank body, a sampling cup, a sampling bag, and a base. The bottom of the tank body is open. An inlet pipeline and an outlet pipeline are provided on the tank body. The inlet pipeline and the outlet pipeline are connected to the sampling pipeline. The sampling cup is arranged on the base, and the sampling bag is arranged in the sampling cup. A necking member is provided at the mouth of the sampling bag.

2. The environmentally friendly sealed adhesive liquid sampling device according to claim 1, wherein, The sampling pipeline includes a first control valve, a second control ball valve, a first valve, a second valve, a third valve, a fifth valve, a sampling pump, a three-way valve, a first sampling branch pipe, a second sampling branch pipe, and a third sampling branch pipe. Both ends of the first sampling branch pipe are respectively connected to the main pipeline. Both ends of the second sampling branch pipe are respectively connected to the first sampling branch pipe. Both ends of the third sampling branch pipe are respectively connected to the first sampling branch pipe and the second sampling branch pipe. The first control valve, the first ball valve, the third ball valve, and the second control valve are sequentially arranged on the first sampling branch pipe. The three-way valve and the second valve are sequentially arranged on the second sampling branch pipe. The sampling pump is arranged on the third sampling branch pipe. The connection point between one end of the second sampling branch pipe and the first sampling branch pipe is located between the first control valve and the first valve, and the connection point between the other end and the first sampling branch pipe is located between the third valve and the second control valve. The connection point between the third sampling branch pipe and the first sampling branch pipe is located between the first valve and the second valve. The connection point between the third sampling branch pipe and the second sampling branch pipe and the second valve are respectively located on both sides of the three-way valve. The three-way valve is connected to the inlet pipeline, and the outlet pipeline is connected to the second sampling branch pipe. The fifth valve is arranged on the outlet pipeline.

3. The environmental protection airtight adhesive liquid sampling device according to claim 2, characterized in that, It further includes a fourth valve. The fourth valve is arranged on the second sampling branch pipe. The connection point between the third sampling branch pipe and the second sampling branch pipe is located between the fourth valve and the fifth valve.

4. The environmental protection airtight adhesive liquid sampling device according to claim 3, wherein, The first sampling valve and the second sampling valve are set as manual ball valves. The first valve, the second valve, the third valve, the fourth valve, and the fifth valve are all set as ball valves.

5. The environmental protection airtight adhesive liquid sampling device according to claim 2, wherein A pressure relief pipeline is provided on the tank body. The pressure relief pipeline is connected to the tank body. A pressure relief valve and a gas filter are provided on the pressure relief pipeline.

6. The environmental protection airtight adhesive liquid sampling device according to claim 1, wherein A condensation member is provided in the sampling tank.

7. The environmental protection airtight adhesive liquid sampling device according to claim 1, characterized in that, The necking member includes multiple elastic ropes and multiple rigid movable blocks. The multiple elastic ropes are sleeved on the inner side of the mouth of the sampling bag by a first loop. The multiple rigid movable blocks are sleeved on the inner side of the mouth of the sampling bag by a second loop and are located below the multiple elastic ropes. The rigid movable block has an arched surface, and the arched surface extends from the upper end to the lower end of the movable block.

8. The environmental protection airtight adhesive liquid sampling device according to claim 7, characterized in that Both the first loop and the second loop are longitudinally arranged, and their upper and lower ends are respectively connected to the sampling bag. The first loop surrounds the multiple elastic ropes. A threading hole is provided on the rigid movable block, and the second loop passes through the threading hole.

9. The environmentally friendly sealed adhesive liquid sampling device according to claim 7, characterized in that The arched surface includes a first arc surface and a second arc surface. The first arc surface is located above the second arc surface, and the radian of the first arc surface is greater than that of the second arc surface.

10. The environmental protection airtight adhesive liquid sampling device according to claim 7, wherein, A guide piece is provided on the arched surface. The guide piece is arranged obliquely downward and includes a plurality of guide bars.

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