Sampling equipment for waterborne polyurethane production

Abstract

The utility model discloses sampling equipment for waterborne polyurethane production, which relates to the technical field of waterborne polyurethane and comprises a sampling barrel, an input one-way valve is fixedly mounted at the bottom of the sampling barrel, a sampling suction pipe is fixedly connected to the bottom of the input one-way valve, and a collecting mechanism is fixedly connected to the lower end of one side of the sampling barrel. A piston is slidably connected into the sampling barrel, a cleaning mechanism is fixedly mounted at the top of the piston, and the outer side of the cleaning mechanism is connected with the inner wall of the sampling barrel in an attached manner. By the adoption of the structure, when the device needs to be cleaned, the device is placed in a cleaning tank, cleaning liquid is added, the sampling barrel is immersed, one hand abuts against the first lifting plate, the other hand pulls the second lifting plate, the sliding rod drives the sliding block and the threaded sleeve to move, the threaded sleeve is in threaded connection with the threaded barrel, and through threaded transmission, linear displacement and rotary displacement, the sampling barrel can be cleaned. And when the sliding rod is pulled, the threaded sleeve rotates in the cylinder to drive the cleaning bristles to rotate for brushing, so that the cleaning effect and convenience are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waterborne polyurethane, in particular to a sampling device for waterborne polyurethane production. Background Art

[0002] Waterborne polyurethane is a polyurethane system with water as the dispersion medium. It is an emulsion or dispersion formed by dispersing polyurethane resin in water with the help of an emulsifier or self-emulsification by introducing hydrophilic groups. Waterborne polyurethane has many advantages, such as low volatile organic compound (VOC) emissions and environmental friendliness; good adhesion, which allows it to firmly adhere to the surfaces of various substrates; excellent flexibility and wear resistance, which makes it widely used in coatings, adhesives and other fields. Compared with traditional solvent-based polyurethane, it is safer and less prone to combustion and explosion. At the same time, waterborne polyurethane can be modified according to different needs to meet various specific performance requirements, such as enhancing water resistance and chemical corrosion resistance. In short, waterborne polyurethane is a new material with diverse performance and wide application.

[0003] Waterborne polyurethane sampling refers to obtaining a certain amount of samples from sources such as waterborne polyurethane production batches, storage containers, or application sites for subsequent quality testing, performance analysis, or research purposes. The Chinese patent with the announcement number "CN219842198U" discloses a sampling device for waterborne polyurethane production, which includes a sampling device, a sampling tube, a push rod, a piston, a pull ring, a sampling nozzle, a threaded tube, a filter, a control valve, a water pipe, a bearing, bristles, and a hose. The waterborne polyurethane production sampling device is installed with bearings, bristles, a water pipe, and a control valve, so that after sampling is completed, the control valve can be opened to feed water from the water pipe into the sampling tube. After the water is full, the control valve is closed. Due to the setting of the bearing, the push rod can rotate, and the bristles can be driven to rotate to clean the waterborne polyurethane remaining on the inner wall of the sampling tube. After completion, the control valve can be opened to drain water through the water pipe. By installing the threaded tube and the filter, impurities can be filtered through the filter during sampling, and because the threaded tube is detachable, the filter can be replaced.

[0004] During use, the above-mentioned equipment can assist in cleaning the interior of the sampling tube. However, the bristles are arranged on the outer surface of the push rod. When the push rod is pulled out during use, the bristles on the outer surface of the push rod will obviously affect the pulling out of the piston push rod. At the same time, the push rod needs to be manually rotated to assist in cleaning during the cleaning process. The rotation operation is relatively complicated and inconvenient. In addition, during the processing, continuous and uninterrupted rapid sampling cannot be achieved during the sampling period. When multiple samples of polyurethane need to be taken, it needs to be repeated. During the test, if the tank body is stored for a long time, sediment may accumulate at the bottom. At this time, only taking samples from the upper part cannot accurately reflect the overall situation. Sampling is required at multiple positions such as the upper, middle, and lower parts of the tank body. In addition, if there is a possibility of uneven stirring during the production process, multiple sampling should also be considered to obtain more representative samples. It can be seen that its overall use has certain defects and shortcomings, so it needs to be improved. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a sampling device for the production of waterborne polyurethane to solve the problems raised in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A sampling device for waterborne polyurethane production, comprising a sampling cylinder, an input one-way valve fixedly mounted on the bottom of the sampling cylinder, a sampling pipette fixedly connected to the bottom of the input one-way valve, a collection mechanism fixedly connected to the lower end of one side of the sampling cylinder, a piston slidably connected to the interior of the sampling cylinder, a cleaning mechanism fixedly mounted on the top of the piston, and the outer side of the cleaning mechanism being in close contact with the inner wall of the sampling cylinder;

[0008] The collecting mechanism includes an output one-way valve, which is fixedly connected to the lower end of one side of the sampling cylinder. The input end of the output one-way valve is connected to the interior of the sampling cylinder. A four-way tube is fixedly installed on the outer end of the output one-way valve. The three outer output ends of the four-way tube are all threadedly connected to a regulating valve, and the bottom of the regulating valve is fixedly connected to a sampling bottle.

[0009] As a preferred technical solution, an observation window is provided on the front of the sampling bottle, and scale lines are provided at equal intervals inside the observation window.

[0010] As an optimal technical solution, a one-way exhaust valve is fixedly installed on one side of the top of the sampling bottle, and the input end of the one-way exhaust valve is connected to the interior of the sampling bottle.

[0011] As an optimal technical solution, the cleaning mechanism includes a threaded barrel, which is fixedly mounted on the top of the piston, and the interior of the threaded barrel is slidably connected to a sliding rod, the top of the sliding rod passes through the threaded barrel, and sliding grooves are provided on both sides of the threaded barrel. A slider is fixedly mounted on the bottom of the sliding rod, and the slider is slidably connected to the sliding groove and the inner side of the threaded barrel. The outer side of the slider is rotatably connected to a swivel, and a threaded sleeve is fixedly mounted on the top of the swivel, and the threaded sleeve is threadedly connected to the outer wall of the threaded barrel. A cleaning brush is fixedly connected to the outer side of the threaded sleeve, and the outer side of the cleaning brush is fit-connected to the inner wall of the sampling barrel.

[0012] As a preferred technical solution, a first lifting plate is fixedly installed on the top of the threaded barrel, and the top of the sliding rod passes through the first lifting plate.

[0013] As a preferred technical solution, a second lifting plate is fixedly installed on the top of the sliding rod through the first lifting plate, and both ends and external corners of the second lifting plate and the first lifting plate are arranged in an arc shape.

[0014] As an optimal technical solution, an anti-skid outer ring cap is fixedly connected to the outer side of the regulating valve, and anti-skid protrusions are fixedly connected to the outer side of the anti-skid outer ring cap at equal intervals.

[0015] In summary, the present invention has the following beneficial effects:

[0016] First, when using the device, insert the sampling pipette into the tank body, open the four-way pipe regulating valve, pull the first lifting plate to drive the threaded barrel to move, use the input one-way valve and the sampling pipette to absorb the solution sample at the upper end of the tank body, push the first lifting plate, and the solution is discharged from the output one-way valve through the opened regulating valve into the sampling bottle. When sampling again, open another regulating valve and repeat the operation. There is no need to pull out the sampling barrel, and multiple sampling can be carried out, which improves convenience.

[0017] Second, when the device needs to be cleaned, place it in the cleaning tank, add cleaning liquid and immerse the sampling tube, press the first lifting plate with one hand, and pull the second lifting plate with the other hand to make the slide rod drive the slider and the threaded sleeve to move. The threaded sleeve is threadedly connected to the threaded barrel. The linear displacement is converted into rotational displacement by using thread transmission. When the slide rod is pulled out, the threaded sleeve rotates in the barrel, driving the cleaning brush bristles to rotate and rub, thereby improving the cleaning effect and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 It is a rear view structural diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the cleaning mechanism of the utility model;

[0021] Figure 4 It is a schematic structural diagram of the cleaning mechanism of the utility model in a disassembled state.

[0022] Figure markings: 1. Sampling cylinder; 2. Input one-way valve; 3. Collection mechanism; 31. Output one-way valve; 32. Four-way pipe; 33. Regulating valve; 34. Sampling bottle; 35. Observation window; 36. Anti-slip outer ring cap; 37. One-way exhaust valve; 4. Piston; 5. Cleaning mechanism; 51. Threaded cylinder; 52. Slide rod; 53. Slide groove; 54. Slider; 55. Rotating ring; 56. Threaded sleeve; 57. Cleaning brush; 58. First lifting plate; 59. Second lifting plate; 6. Sampling pipette. DETAILED DESCRIPTION

[0023] Example

[0024] refer to Figures 1 to 4 The present embodiment provides a sampling device for waterborne polyurethane production, comprising a sampling cylinder 1, an input one-way valve 2 fixedly mounted at the bottom of the sampling cylinder 1, a sampling pipette 6 fixedly connected to the bottom of the input one-way valve 2, a collecting mechanism 3 fixedly connected to the lower end of one side of the sampling cylinder 1, a piston 4 slidably connected to the interior of the sampling cylinder 1, a cleaning mechanism 5 fixedly mounted on the top of the piston 4, and the outer side of the cleaning mechanism 5 is in contact with the inner wall of the sampling cylinder 1;

[0025] The collecting mechanism 3 includes an output one-way valve 31, which is fixedly connected to the lower end of one side of the sampling cylinder 1. The input end of the output one-way valve 31 is connected to the interior of the sampling cylinder 1, and the outer end of the output one-way valve 31 is fixedly installed with a four-way tube 32. The three output ends of the outer side of the four-way tube 32 are all threadedly connected to the regulating valve 33, and the bottom of the regulating valve 33 is fixedly connected to the sampling bottle 34. The input one-way valve 2 at the bottom of the sampling cylinder 1 is matched with the sampling pipette 6, which can effectively absorb the sample. The output one-way valve 31 in the collecting mechanism 3 is connected to the four-way tube 32, and the regulating valves 33 at the three output ends of the outer side of the four-way tube 32 can be connected to the sampling bottle 34, which is convenient for controlling and switching the sampling bottle 34, realizing efficient and diversified sampling operations. In addition, the cleaning mechanism 5 on the top of the piston 4 fits into the inner wall of the sampling cylinder 1, which is conducive to comprehensive and thorough cleaning of the interior after the sampling is completed, keeping the equipment clean and accurate for next use, thereby improving the practicality and reliability of the equipment as a whole.

[0026] refer to Figure 1-Figure 2The front of the sampling bottle 34 is provided with an observation window 35, and the inside of the observation window 35 is provided with scale lines at equal intervals. A one-way exhaust valve 37 is fixedly installed on one side of the top of the sampling bottle 34, and the input end of the one-way exhaust valve 37 is connected to the interior of the sampling bottle 34. The outside of the regulating valve 33 is fixedly connected to a non-slip outer ring cap 36, and the outside of the non-slip outer ring cap 36 is fixedly connected to anti-slip protrusions at equal intervals. The inside of the observation window 35 opened on the front is provided with scale lines at equal intervals, which is convenient for the user to read the sampling volume intuitively and accurately. The one-way exhaust valve 37 installed on one side of the top can balance the pressure in the bottle during sampling, ensuring smooth sampling. The non-slip outer ring cap 36 on the outside of the regulating valve 33 and the anti-slip protrusions on it increase the friction during operation, making the movement of the regulating valve 33 door more convenient and stable, effectively avoiding operational errors caused by hand slippage, and improving the controllability and convenience of the entire sampling process.

[0027] refer to Figure 1-Figure 4 The cleaning mechanism 5 includes a threaded cylinder 51, which is fixedly mounted on the top of the piston 4. The interior of the threaded cylinder 51 is slidably connected to a slide rod 52, and the top of the slide rod 52 passes through the threaded cylinder 51. A slide groove 53 is provided on both sides of the threaded cylinder 51. A slider 54 is fixedly mounted on the bottom of the slide rod 52. The slider 54 is slidably connected to the slide groove 53 and the inner side of the threaded cylinder 51. The outer side of the slider 54 is rotatably connected to a swivel 55. A threaded sleeve 56 is fixedly mounted on the top of the swivel 55. The threaded sleeve 56 is threadedly connected to the outer wall of the threaded cylinder 51. A cleaning brush 57 is fixedly connected to the outer side of the threaded sleeve 56. The outer side of the cleaning brush 57 is fitted with the inner wall of the sampling cylinder 1. A first lifting plate 58 is fixedly mounted on the top of the threaded cylinder 51. The top of the slide rod 52 passes through the first lifting plate 58. The top of the slide rod 52 passes through the first The lifting plate 58 is fixedly installed with a second lifting plate 59. The two ends and external corners of the second lifting plate 59 and the first lifting plate 58 are arc-shaped. The threaded tube 51 is fixed to the top of the piston 4, and the sliding rod 52 inside it slides in the sliding groove 53 through the slider 54 at the bottom. The threaded sleeve 56 on the rotating ring 55 outside the slider 54 is threadedly connected to the threaded tube 51. This design is ingenious and stable. When operating, the sliding rod 52 is pulled out to drive the slider 54 to slide, and the threaded sleeve 56 is rotated by thread transmission, driving the cleaning bristles 57 on the outside to clean the inner wall of the sampling tube 1, and the cleaning effect is excellent. The first lifting plate 58 on the top and the second lifting plate 59 on the top of the sliding rod 52 are easy to operate, and the two ends and external corners are arc-shaped, which is safer and more comfortable to use, and improves the convenience and humanization of the cleaning operation.

[0028] 33, and the throttle body 33 is opened ...

[0029] By setting up the cleaning mechanism 5, when the device needs to be cleaned, it is only necessary to place the device inside the external cleaning tank, add cleaning liquid, then use one hand to push the first lifting plate 58, and the other hand to push the second lifting plate 59 to immerse the sampling tube 1 in the cleaning liquid. At this time, the second lifting plate 59 is pulled and pushed to drive the slide bar 52 to slide on the inner side of the threaded tube 51. The sliding of the slide bar 52 can drive the slider 54 to move up and down. The sliding displacement of the slider 54 can drive the threaded sleeve 56 to move on the threaded tube 51. The threaded sleeve 56 and the threaded tube 51 are threadedly connected. As the slide bar 52 drives the slider 54 slides up and down, and the design of the threaded transmission is used at this time, so that the linear displacement can be converted into a rotational displacement. During the process of pulling and pulling the slide rod 52, the threaded sleeve 56 adaptively rotates inside the sampling tube 1. Since the sampling tube 1 is immersed in the cleaning liquid in the cleaning tank, the cleaning liquid flows into the interior of the sampling tube 1. As the threaded sleeve 56 rotates, it can drive the cleaning bristles 57 to brush and clean the interior of the sampling tube 1, prompting the threaded sleeve 56 to drive the cleaning bristles 57 to move inside the sampling tube 1 while rotating and cleaning, which can maximize the cleaning effect and convenience of the overall sampling tube 1 of this device.

Claims

1. A sampling device for the production of waterborne polyurethane, comprising a sampling cylinder (1), characterized in that: An input one-way valve (2) is fixedly installed at the bottom of the sampling cylinder (1), a sampling pipette (6) is fixedly connected to the bottom of the input one-way valve (2), a collecting mechanism (3) is fixedly connected to the lower end of one side of the sampling cylinder (1), a piston (4) is slidably connected to the interior of the sampling cylinder (1), a cleaning mechanism (5) is fixedly installed on the top of the piston (4), and the outer side of the cleaning mechanism (5) is in close contact with the inner wall of the sampling cylinder (1); The collecting mechanism (3) comprises an output one-way valve (31), the output one-way valve (31) is fixedly connected to the lower end of one side of the sampling cylinder (1), the input end of the output one-way valve (31) is connected to the interior of the sampling cylinder (1), a four-way pipe (32) is fixedly installed on the outer end of the output one-way valve (31), the three outer output ends of the four-way pipe (32) are all threadedly connected to the regulating valve (33), and the bottom of the regulating valve (33) is fixedly connected to the sampling bottle (34).

2. The sampling device for waterborne polyurethane production according to claim 1, characterized in that: An observation window (35) is provided on the front of the sampling bottle (34), and scale lines are provided at equal intervals inside the observation window (35).

3. The sampling device for waterborne polyurethane production according to claim 1, characterized in that: A one-way exhaust valve (37) is fixedly installed on one side of the top of the sampling bottle (34), and the input end of the one-way exhaust valve (37) is connected to the interior of the sampling bottle (34).

4. The sampling device for waterborne polyurethane production according to claim 1, characterized in that: The cleaning mechanism (5) comprises a threaded barrel (51), which is fixedly mounted on the top of the piston (4), and a sliding rod (52) is slidably connected to the inside of the threaded barrel (51), and the top of the sliding rod (52) passes through the threaded barrel (51). Both sides of the threaded barrel (51) are provided with a sliding groove (53), and a slider (54) is fixedly mounted on the bottom of the sliding rod (52), and the slider (54) is slidably connected to the sliding groove (53) and the inner side of the threaded barrel (51). The outer side of the slider (54) is rotatably connected to a rotating ring (55), and the top of the rotating ring (55) is fixedly mounted with a threaded sleeve (56), and the threaded sleeve (56) is threadedly connected to the outer wall of the threaded barrel (51). The outer side of the threaded sleeve (56) is fixedly connected to a cleaning brush (57), and the outer side of the cleaning brush (57) is in contact with the inner wall of the sampling barrel (1).

5. The sampling device for waterborne polyurethane production according to claim 4, characterized in that: A first lifting plate (58) is fixedly mounted on the top of the threaded cylinder (51), and the top of the sliding rod (52) passes through the first lifting plate (58).

6. The sampling device for waterborne polyurethane production according to claim 5, characterized in that: The top of the sliding rod (52) passes through the first lifting plate (58) and is fixedly mounted with a second lifting plate (59). Both ends and external corners of the second lifting plate (59) and the first lifting plate (58) are arranged in an arc shape.

7. The sampling device for waterborne polyurethane production according to claim 1, characterized in that: The outer side of the regulating valve (33) is fixedly connected to an anti-skid outer ring cap (36), and the outer side of the anti-skid outer ring cap (36) is fixedly connected to anti-skid protrusions at equal intervals.

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