Sampling device for flame retardant

Abstract

The utility model discloses a sampling device for flame retardant, which belongs to the technical field of flame retardant production and comprises a sampling barrel, the sampling barrel comprises an upper sampling barrel, a plurality of middle sampling barrels and a plurality of lower sampling barrels which are in threaded connection, and an upper sampling tube, a middle sampling tube and a lower sampling tube are respectively arranged in the upper sampling barrel, the middle sampling barrels and the lower sampling barrels; a rotary cover is arranged on the upper end face of the upper sampling barrel, and the lower end face of the rotary cover can cling to the upper end face of the upper sampling barrel and swing between a first position and a second position; at the first position, the rotary cover is far away from the upper end surface of the upper sampling tube, and the sampling barrel is opened up and down and is inserted into a container for sampling; at the second position, the rotary cover is positioned right above the upper sampling tube, the upper end surface of the sampling barrel is closed, and the sampling barrel finishes sampling. When the upper end and the lower end of the sampling barrel are opened, liquid flame retardants enter the sampling barrel, the flame retardants cannot drop after the upper end face of the sampling barrel is closed, operation is easy, the length of the sampling barrel can be adjusted, and the flame retardants at different depths can be sampled.

Description

Technical Field

[0001] This utility model relates to the field of flame retardant production technology, specifically to a sampling device for flame retardants. Background Technology

[0002] Flame retardants are functional additives that impart flame-retardant properties to flammable polymers. They are primarily designed for flame retardancy in polymer materials and come in various types, categorized by application method into additive flame retardants and reactive flame retardants. Sampling is performed during the production of liquid flame retardants using sampling devices.

[0003] The following problems are common in most existing flame retardant sampling devices.

[0004] 1. Sampling is simple using a push-pull sampler, but it is labor-intensive and inconvenient when sampling a large number of samples. In addition, the liquid entering the sampling device is prone to fall from the inlet and contaminate the workshop floor.

[0005] 2. After sampling, the flame retardant adhering to the outer surface of the sampling device is prone to dripping onto the ground under the influence of gravity, thus contaminating the workshop floor;

[0006] 3. The length of most sampling devices is fixed, which is not suitable for removing samples from different depths in the reaction vessel.

[0007] In view of the problems existing in the prior art, this utility model combines years of design and use experience in related fields to design and manufacture a sampling device for flame retardants to overcome the above defects. Utility Model Content

[0008] To address the problems existing in the prior art, this utility model provides a sampling device for flame retardants that can achieve flame retardant sampling without pushing or pulling, avoiding liquid falling inside the sampling device, and is suitable for sampling flame retardants at different depths.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sampling device for flame retardants, comprising a sampling cylinder, wherein the sampling cylinder comprises an upper sampling cylinder, a plurality of middle sampling cylinders and a lower sampling cylinder connected in sequence by threads, wherein the upper sampling cylinder, the middle sampling cylinder and the lower sampling cylinder are respectively provided with an upper sampling tube, a middle sampling tube and a lower sampling tube, and the upper sampling tube, the middle sampling tube and the lower sampling tube are connected in sequence;

[0010] The upper end face of the upper sampling cylinder is rotatably provided with a rotating cover, and the lower end face of the rotating cover can abut against the upper end face of the upper sampling cylinder and swing between a first position and a second position.

[0011] In the first position, the rotating cover is away from the upper end face of the upper sampling tube, the sampling tube is open at the top and bottom, and the sampling tube is vertically inserted into the container for sampling; in the second position, the rotating cover is located directly above the upper sampling tube, the upper end face of the sampling tube is closed, and sampling ends.

[0012] Preferably, the rotating cover is mounted on the upper sampling cylinder via a rotating shaft, and the rotating shaft is vertically positioned.

[0013] Preferably, the lower end face of the rotating cover away from the pivot is provided with a protrusion;

[0014] The upper end face of the upper sampling cylinder is provided with an arc-shaped groove, the horizontal extension direction of the arc-shaped groove coincides with the swing trajectory of the rotating cover, and the protrusion slides in cooperation with the arc-shaped groove.

[0015] Preferably, the protrusion is inverted T-shaped.

[0016] Preferably, the protrusion is a raised strip.

[0017] Preferably, the rotating cover is provided with a handle.

[0018] Preferably, the upper sampling cylinder has a first inner cavity and a second inner cavity connected vertically in sequence in the vertical direction, and the diameter of the first inner cavity is smaller than the diameter of the second inner cavity;

[0019] The upper sampling tube is fixedly inserted into the first inner cavity, and the upper and lower end faces of the upper sampling tube are flush with the upper and lower end faces of the first inner cavity, respectively. The side wall of the second inner cavity is provided with internal threads.

[0020] Preferably, the sampling cylinder has a third inner cavity and a fourth inner cavity connected vertically in sequence in the vertical direction, and the diameter of the third inner cavity is smaller than the diameter of the fourth inner cavity;

[0021] The sampling tube is fixedly inserted into the third inner cavity. The upper end face of the sampling tube is higher than the upper end face of the third inner cavity, and the bottom of the sampling tube is flush with the bottom of the third inner cavity. The side wall of the fourth inner cavity is provided with internal threads.

[0022] The outer surface of the portion of the sampling tube above the third inner cavity is provided with external threads, and the external threads on the sampling tube match the internal threads on the second inner cavity.

[0023] Preferably, the lower end face of the lower sampling tube is flush with the lower end face of the lower sampling cylinder, the upper end face of the lower sampling tube is higher than the upper end face of the lower sampling cylinder, the outer surface of the portion of the lower sampling tube that is higher than the lower sampling cylinder is provided with an external thread, and the external thread on the lower sampling tube matches the internal thread on the fourth inner cavity.

[0024] Preferably, it also includes a sampling tube cover, the sampling tube cover having an opening at its upper end, and the sampling tube cover being fitted over the lower end of the lower sampling tube;

[0025] The bottom of the sampling tube cover is provided with a plug that can be inserted into the bottom of the lower sampling tube. The plug is located inside the sampling tube cover, the sampling tube cover and the plug are axially aligned, and the diameter of the plug is equal to the diameter of the lower sampling tube.

[0026] The advantages of this utility model are:

[0027] 1. This utility model utilizes the swinging of the rotating cover on the upper end face of the upper sampling tube. In the first position, the rotating cover is away from the upper end face of the upper sampling tube, and the sampling tube is open at both ends. The liquid flame retardant in the container automatically enters the sampling tube from the bottom opening of the lower sampling tube. In the second position, the rotating cover is directly above the upper sampling tube, the upper end face of the sampling tube is closed, and a small vacuum is formed inside the sampling tube, so that the flame retardant will not flow out from the bottom of the sampling tube, thus completing the sampling. The sampling process does not require pushing or pulling, the operation is simple, and it is suitable for multi-sample sampling.

[0028] 2. This utility model forms sampling cylinders of different lengths by connecting an upper sampling cylinder, several middle sampling cylinders, and a lower sampling cylinder through a threaded connection. It is suitable for sampling flame retardants at different depths in a reaction vessel, thereby reducing costs.

[0029] 3. This utility model has a sampling tube cover outside the lower sampling tube. After sampling, the flame retardant flowing down from the outer wall of the sampling tube falls into the sampling tube cover, avoiding contamination of the workshop. In addition, the plug on the sampling tube cover can isolate the flame retardant inside the sampling tube from the outside world, preventing the flame retardant at the bottom of the sampling tube from being contaminated by the outside world. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a sampling device for flame retardants.

[0031] Figure 2 This is a top view of a sampling device for flame retardants.

[0032] Figure 3 This is a schematic diagram of the rotating cap of a sampling device for flame retardants.

[0033] Figure 4 This is a schematic diagram of the upper sampling cylinder of a sampling device for flame retardants.

[0034] Figure 5 This is a schematic diagram of the sampling cylinder in a sampling device for flame retardants.

[0035] Figure 6 This is a schematic diagram of the lower sampling cylinder of a sampling device for flame retardants.

[0036] In the diagram: 1-Sampling cylinder, 2-Rotating cover, 3-Rotating shaft, 4-Protrusion, 5-Arc-shaped groove, 6-Holding rod, 7-First inner cavity, 8-Second inner cavity, 9-Upper sampling tube, 10-Middle sampling tube, 11-Lower sampling tube, 12-Third inner cavity, 13-Fourth inner cavity, 14-Sampling cylinder cover, 15-Pocket plug, 101-Upper sampling cylinder, 102-Middle sampling cylinder, 103-Lower sampling cylinder. Detailed Implementation

[0037] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0038] like Figures 1-6 As shown, a sampling device for flame retardants includes a sampling cylinder 1, which comprises an upper sampling cylinder 101, a plurality of middle sampling cylinders 102, and a lower sampling cylinder 103. The upper sampling cylinder 101, the plurality of middle sampling cylinders 102, and the lower sampling cylinder 103 are sequentially threaded together in the vertical direction. An upper sampling tube 9, a middle sampling tube 10, and a lower sampling tube 11 are respectively provided inside the upper sampling cylinder 101, the middle sampling cylinder 102, and the lower sampling cylinder 103, and are sequentially connected to each other. In this invention, the outer surface of the upper sampling tube 9 is tightly fitted to the inner wall of the upper sampling cylinder 101, the outer surface of the middle sampling tube 10 is tightly fitted to the inner wall of the middle sampling cylinder 102, and the outer surface of the lower sampling tube 11 is tightly fitted to the inner wall of the lower sampling cylinder 103. The number of sampling cylinders 102 can be selected as needed. The upper sampling cylinder 101, several middle sampling cylinders 102 and the lower sampling cylinder 103 are connected by threads to realize the length variation of the sampling cylinder 1, which facilitates the sampling of flame retardant at different depths in the reactor.

[0039] A rotating cover 2 is rotatably mounted on the upper end face of the upper sampling cylinder 101. The rotating cover 2 can be circular or rectangular. The lower end face of the rotating cover 2 can abut against the upper end face of the upper sampling cylinder 101 and swing between a first position and a second position. In the first position, the rotating cover 2 is away from the upper end face of the upper sampling tube 9, and the sampling cylinder 1 is open at both ends, allowing the sampling cylinder 1 to be vertically inserted into the container for sampling. In the second position, the rotating cover 2 is located directly above the upper sampling tube 9, and the upper end face of the sampling cylinder 1 is closed, ending the sampling process. Specifically, in the first position, the rotating cover 2 is open at both ends, so after the sampling cylinder 1 is vertically inserted into the reactor, the flame retardant in the reactor enters the sampling cylinder from the bottom of the lower sampling tube 11. When the rotating cover 2 swings to the second position, the upper end of the sampling cylinder 1 is closed, creating a small vacuum inside the sampling cylinder 1, preventing the flame retardant from flowing out, thus completing the sampling. The sampling process is simple and easy to operate, and can be used for multiple samplings. When it is necessary to transfer the flame retardant to the storage container or testing device, the rotating cover 2 is swung to the first position, and the flame retardant flows downward under the action of gravity. At the same time, air is blown into the sampling tube upward by the air pump to promote the flame retardant to fall, saving time and making the sampling tube 1 easy to clean.

[0040] Specifically, the rotating cover 2 is mounted on the upper sampling cylinder 101 via a rotating shaft 3, which is vertically positioned. The rotating cover 2 has a handle 6, and a protrusion 4, preferably an inverted T-shape or a raised strip, is located on its lower end face away from the rotating shaft 3. An arc-shaped groove 5 is provided on the upper end face of the upper sampling cylinder 101, and the horizontal extension direction of the arc-shaped groove 5 coincides with the swing trajectory of the rotating cover 2. The protrusion 4 slides within the arc-shaped groove 5. The rotating cover 2 is easily operated by swinging it using the handle 6. The protrusion 4 on the rotating cover 2 slides on the arc-shaped groove 5, ensuring that the rotating cover 2 further conforms to the upper end face of the upper sampling cylinder 101, thus improving the vacuum level.

[0041] The upper sampling cylinder 101 has a first inner cavity 7 and a second inner cavity 8 connected vertically in the vertical direction. The diameter of the first inner cavity 7 is smaller than the diameter of the second inner cavity 8. The upper sampling tube 9 is fixedly inserted into the first inner cavity 7, and the upper and lower end faces of the upper sampling tube 9 are flush with the upper and lower end faces of the first inner cavity 7. The side wall of the second inner cavity 8 is provided with internal threads. The middle sampling cylinder 102 has a third inner cavity 12 and a fourth inner cavity 13 connected vertically in the vertical direction. The diameter of the third inner cavity 12 is smaller than the diameter of the fourth inner cavity 13. The middle sampling tube 10 is fixedly inserted into the third inner cavity 12, and the bottom of the middle sampling tube 10 is flush with the bottom of the third inner cavity. The upper end face of the middle sampling tube 10 is higher than the upper end face of the third inner cavity 12. The side wall of the fourth inner cavity 13 is provided with internal threads. The outer surface of the middle sampling tube 10 above the third inner cavity 12 is provided with external threads, and the external threads on the middle sampling tube 10 match the internal threads on the second inner cavity 8.

[0042] The lower end face of the lower sampling tube 11 is flush with the lower end face of the lower sampling cylinder 103. The upper end face of the lower sampling tube 11 is higher than the upper end face of the lower sampling cylinder 103. The outer surface of the portion of the lower sampling tube 11 that is higher than the lower sampling cylinder 103 is provided with an external thread. The external thread on the lower sampling tube 11 matches the internal thread on the fourth inner cavity 13.

[0043] In this invention, the external thread at the upper part of the sampling tube 10 is threaded to the second cavity of the upper sampling cylinder 101, completing the connection between the upper sampling cylinder 101 and the middle sampling cylinder 102. The upper part of the sampling tube 10 is threaded to the fourth cavity of the middle sampling cylinder 102, completing the connection between the two middle sampling cylinders 102. The upper part of the lower sampling tube 11 is threaded to the fourth cavity of the middle sampling cylinder 102, completing the connection between the middle sampling cylinder 102 and the lower sampling cylinder 103. In practical applications, the number of middle sampling cylinders 102 is determined according to the depth of the flame retardant during sampling, and then the sampling cylinder 1 is assembled according to the above process to sample flame retardants at different depths.

[0044] In a preferred embodiment of this utility model, a sampling tube cover 14 is further included. The sampling tube cover 14 is vertically arranged and open at the top, and is fitted onto the lower end of the lower sampling tube 103. The bottom of the sampling tube cover 14 is provided with a plug 15 that can be inserted into the bottom of the lower sampling tube 11. The plug 15 is located inside the sampling tube cover 14, and the axes of the sampling tube cover 14 and the plug 15 coincide. The diameter of the plug 15 is equal to the diameter of the lower sampling tube 11.

[0045] After the sampling cylinder 1 is vertically inserted into the flame retardant, flame retardant easily adheres to its outer surface. When sampling is completed and the sampling cylinder 1 is removed from the reactor, the flame retardant on its outer surface can easily drip into the workshop, causing pollution. This invention addresses this by providing a sampling cylinder cover 14 on the lower sampling cylinder 103. The flame retardant adhering to the outer surface of the sampling cylinder 1 drips under gravity into the sampling cylinder cover 14, preventing pollution of the workshop. Furthermore, this invention provides a plug 15 inserted into the bottom of the lower sampling tube 11 to isolate the flame retardant inside the sampling cylinder 1 from the outside environment, thus preventing pollution.

[0046] Detailed operation process

[0047] Sampling cylinder 1 includes an upper sampling cylinder 101, a middle sampling cylinder 102, and a lower sampling cylinder 103. Taking the connection between the upper sampling cylinder 101 and the middle sampling cylinder 102 as an example, the upper part of the middle sampling tube 10 in the middle sampling cylinder 102 is inserted into the second cavity of the upper sampling cylinder 101. The external thread on the outer surface of the middle sampling tube 10 is used to connect with the internal thread of the second cavity until the lower end face of the upper sampling tube 9 abuts against the upper end face of the middle sampling tube 10, thus completing the connection between the upper sampling cylinder 101 and the middle sampling cylinder 102. The connection between the middle sampling cylinder 102 and the lower sampling cylinder 103 is installed according to the above operation. By holding the lever 6, the rotating cover 2 is swung to the first position, and the rotating cover 2 moves away from the upper sampling tube 9. At this time, the sampling cylinder 1 is open at the top and bottom. The sampling cylinder 1 is vertically inserted into the liquid flame retardant, and the flame retardant enters the sampling cylinder 1 through the opening at the bottom end of the lower sampling tube 11. Then, using the lever 6, swing the rotating cover 2 to the second position. The rotating cover 2 swings directly above the upper sampling tube 9. At this time, the top of the sampling cylinder 1 is closed, and the flame retardant inside the sampling cylinder 1 will not flow out, thus completing the sampling. Remove the sampling cylinder 1 from the reactor, put the sampling cylinder cover 14 over the outside of the sampling cylinder 1, and insert the plug 15 on the sampling cylinder cover 14 into the lower end of the lower sampling tube 11. Finally, send the flame retardant in the sampling cylinder 1 for testing.

[0048] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A sampling device for flame retardants, characterized in that, The sampling cylinder includes an upper sampling cylinder, several middle sampling cylinders and a lower sampling cylinder that are connected in sequence by threads. The upper sampling cylinder, middle sampling cylinder and lower sampling cylinder are respectively provided with an upper sampling tube, a middle sampling tube and a lower sampling tube, and the upper sampling tube, middle sampling tube and lower sampling tube are connected in sequence. The upper end face of the upper sampling cylinder is rotatably provided with a rotating cover, and the lower end face of the rotating cover can abut against the upper end face of the upper sampling cylinder and swing between a first position and a second position. In the first position, the rotating cover is away from the upper end face of the upper sampling tube, the sampling tube is open at the top and bottom, and the sampling tube is vertically inserted into the container for sampling; in the second position, the rotating cover is located directly above the upper sampling tube, the upper end face of the sampling tube is closed, and sampling ends.

2. The sampling device for flame retardants according to claim 1, characterized in that, The rotating cover is mounted on the upper sampling cylinder via a rotating shaft, which is vertically positioned.

3. A sampling device for flame retardants according to claim 2, characterized in that, The lower end face of the rotating cover, away from the pivot, is provided with a protrusion; The upper end face of the upper sampling cylinder is provided with an arc-shaped groove, the horizontal extension direction of the arc-shaped groove coincides with the swing trajectory of the rotating cover, and the protrusion slides in cooperation with the arc-shaped groove.

4. A sampling device for flame retardants according to claim 3, characterized in that, The protrusion is inverted T-shaped.

5. A sampling device for flame retardants according to claim 3, characterized in that, The protrusion is a raised strip.

6. A sampling device for flame retardants according to claim 1, characterized in that, The rotating cover is equipped with a handle.

7. A sampling device for flame retardants according to claim 1, characterized in that, The upper sampling cylinder has a first inner cavity and a second inner cavity connected vertically in sequence in the vertical direction. The diameter of the first inner cavity is smaller than the diameter of the second inner cavity. The upper sampling tube is fixedly inserted into the first inner cavity, and the upper and lower end faces of the upper sampling tube are flush with the upper and lower end faces of the first inner cavity, respectively. The side wall of the second inner cavity is provided with internal threads.

8. A sampling device for flame retardants according to claim 7, characterized in that, The sampling cylinder has a third inner cavity and a fourth inner cavity connected vertically in the middle and lower directions, and the diameter of the third inner cavity is smaller than the diameter of the fourth inner cavity. The sampling tube is fixedly inserted into the third inner cavity, the upper end face of the sampling tube is higher than the upper end face of the third inner cavity, the bottom of the sampling tube is flush with the bottom of the third inner cavity, and the side wall of the fourth inner cavity is provided with internal threads. The outer surface of the portion of the sampling tube above the third inner cavity is provided with external threads, and the external threads on the sampling tube match the internal threads on the second inner cavity.

9. A sampling device for flame retardants according to claim 8, characterized in that, The lower end face of the lower sampling tube is flush with the lower end face of the lower sampling cylinder, the upper end face of the lower sampling tube is higher than the upper end face of the lower sampling cylinder, the outer surface of the portion of the lower sampling tube that is higher than the lower sampling cylinder is provided with an external thread, and the external thread on the lower sampling tube matches the internal thread on the fourth inner cavity.

10. A sampling device for flame retardants according to claim 1, characterized in that, It also includes a sampling tube cover, which has an opening at the top and is fitted over the lower end of the lower sampling tube; The bottom of the sampling tube cover is provided with a plug that can be inserted into the bottom of the lower sampling tube. The plug is located inside the sampling tube cover, and the axis of the plug and the sampling tube cover coincides. The diameter of the plug is equal to the diameter of the lower sampling tube.

Images