Detection device and method for composition content of each monomer unit in plastic

Abstract

The present invention discloses a detection device and method for the composition content of each monomer unit in plastics, including a holding cylinder and a plurality of detection boxes. Inside the top of the holding cylinder, a cylinder cover A is snap-fitted, and inside the cylinder cover A, a cylinder cover B is snap-fitted. By starting the liquid pump, the liquid suction pipe extracts the plastic solution inside the holding seat and discharges the plastic solution into the reaction cylinder in a certain amount. Then, according to the substance to be detected, the corresponding detection reaction reagent is added into the reaction cylinder through the additive pipe. The detection reaction reagent can react with one substance in the plastic solution, and the reagent detector can detect the detection reaction reagent added through the additive pipe. When the reagent detector detects the detection reaction reagent, it means that too much detection reaction reagent has been added into the reaction cylinder through the additive pipe. Therefore, the content of the reaction component in the corresponding plastic solution can be determined and displayed on the display screen A. The detection is convenient and the detection effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of plastic detection, and particularly relates to a device and method for detecting the composition content of each monomer unit in plastics. Background Art

[0002] Plastics refer to plastic (flexible) materials formed by processing with high molecular weight synthetic resins as the main component and adding appropriate additives such as plasticizers, stabilizers, antioxidants, flame retardants, colorants, etc., or rigid materials formed by curing and crosslinking.

[0003] When using plastics, it is necessary to detect the content of various components inside them. Because when different plastics are produced, in order to meet the usage requirements, the content of the components inside them is different. Therefore, it is necessary to detect and determine the internal components before using plastics. When the existing plastic detection devices detect the plastic components, one plastic raw material can only detect the content of one component inside it, and cannot detect multiple components simultaneously. Moreover, there are certain errors in the detection results, resulting in inappropriate use of plastics, affecting the subsequent use of plastics, and prone to safety hazards. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a device and method for detecting the composition content of each monomer unit in plastics, which solves the problems that when the existing plastic detection devices detect the plastic components, one plastic raw material can only detect the content of one component inside it, and cannot detect multiple components simultaneously. Moreover, there are certain errors in the detection results, resulting in inappropriate use of plastics, affecting the subsequent use of plastics, and prone to safety hazards.

[0005] To achieve the above object, the present invention provides the following technical solution: A detection device for the composition content of each monomer unit in plastics, comprising a storage cylinder and a plurality of detection boxes. Inside the top of the storage cylinder, a lid A is snap-fitted. Inside the lid A, a lid B is snap-fitted. On the top of the lid B, a stirring motor is fixedly installed. The output end of the stirring motor is fixedly installed with a connecting rod. The other end of the connecting rod is fixedly installed with a mounting seat. Inside the mounting seat, two liquid tanks are installed. At the bottom of the mounting seat, two flamethrowers are fixedly installed. At the bottom of the mounting seat, a stirring rod is fixedly installed. On the outer side of the stirring rod, stirring blades are fixedly installed. The top of the lid A is communicated with a gas guide pipe. The top of the gas guide pipe is communicated with a gas detection box. Inside the gas detection box, a gas detector is fixedly installed. On the top of the gas detection box, an air outlet is opened. At the bottom of the inner cavity of the storage cylinder, a support column is fixedly installed. Inside the top of the support column, a weighing device is fixedly installed. On the top of the weighing device, a storage seat is fixedly installed. At the bottom of the storage seat, a heating plate is fixedly installed. On the outer side of the storage cylinder, a display screen B is fixedly installed. The top of the detection box is communicated with an additive pipe. The back of the detection box is communicated with a liquid guide pipe. The other end of the liquid guide pipe is communicated with a liquid pump. The liquid inlet end of the liquid pump is communicated with a liquid suction pipe. Inside the bottom of the detection box, a reaction cylinder is installed. At the bottom of the inner cavity of the reaction cylinder, a reagent detector is fixedly installed. On the top of the front of the detection box, a display screen A is fixedly installed.

[0006] Preferably, the ends of the liquid suction pipes away from the liquid pump penetrate through the side wall of the storage cylinder and are communicated with the storage seat.

[0007] Through the above technical solution, the advantage is that after the plastic particles are melted, the liquid pump can be started to enable the liquid suction pipes to extract the plastic solution inside the storage seat and discharge the plastic solution into the reaction cylinder in a certain amount. Then, according to the substance to be detected, the corresponding detection reaction reagent is added into the reaction cylinder through the additive pipe. The detection reaction reagent can react with one substance in the plastic solution, and the reagent detector can detect the detection reaction reagent added through the additive pipe. When the reagent detector detects the detection reaction reagent, it means that too much detection reaction reagent has been added into the reaction cylinder through the additive pipe. Therefore, the content of the reaction component in the corresponding plastic solution can be determined and displayed through the display screen A. The detection is convenient and the detection effect is good.

[0008] Preferably, electromagnetic valves are installed on the outer sides of the additive pipe, the liquid suction pipe and the liquid guide pipe.

[0009] Through the above technical solution, the advantage is that the function of the electromagnetic valve is to prevent the plastic solution from flowing out of the liquid suction pipe and the liquid guide pipe, and the additive pipe can be opened and closed at any time.

[0010] Preferably, a door is installed on the front of the detection box body through a hinge.

[0011] Through the above technical solution, the advantage is that the front of the detection box body can be sealed and blocked by the door.

[0012] Preferably, four concave card seats are fixedly installed on the top of the cylinder cover A, four card strips are fixedly installed on the outside of the cylinder cover B, the four card strips are respectively clamped inside the four concave card seats, and a sealing ring is fixedly installed on the outside of the cylinder cover B.

[0013] Through the above technical solution, the advantage is that the four card strips and the four concave card seats can install the cylinder cover B inside the cylinder cover A, so as to realize that the cylinder cover B is clamped inside the cylinder cover A, and the stirring rod and the stirring blade are located inside the placing seat, so as to stir the plastic particles inside the placing seat.

[0014] Preferably, handles are fixedly installed on both sides of the top of the cylinder cover B, covers are clamped inside both sides of the top of the cylinder cover B, and pull handles are fixedly installed on the tops of the covers.

[0015] Through the above technical solution, the advantage is that the provided handles facilitate pulling up the cylinder cover B, and the provided pull handles facilitate pulling up the covers.

[0016] Preferably, a bottom plate is fixedly installed at the bottom of the placing cylinder, support legs are fixedly installed at the bottom of the bottom plate, there are four support legs, and the four support legs are symmetrically distributed in a rectangle at the bottom of the bottom plate.

[0017] Through the above technical solution, the advantage is that the provided four support legs can support the whole device.

[0018] A detection method for a detection device of the composition content of each monomer unit in plastics includes the following steps:

[0019] S1: First, place plastic particles inside the placing seat. The weighing device weighs the plastic particles inside the placing seat in real time and transmits the information to the display screen B for display. Then, clamp the cylinder cover A inside the top of the placing cylinder, and then clamp the cylinder cover B inside the cylinder cover A, so that the stirring rod and the stirring blade are located inside the placing seat. Then start the stirring motor. The output end of the stirring motor can drive the connecting rod to rotate, thereby driving the mounting seat to rotate, and finally driving the stirring rod and the stirring blade to rotate to stir the plastic particles placed inside the placing seat. At the same time, start the heating plate to heat the placing seat, so that the plastic particles inside the placing seat melt into a liquid.

[0020] S2: During the process of melting plastic particles into liquid, gases are generated. After the gases rise, they can enter the interior of the gas detection box through the gas guide pipe. The gas detector inside the gas detection box can detect the components of the gases passing through the interior of the gas detection box, thereby determining the content of the components contained in the plastic particles based on the component content in the gases, and thus detecting the components of the substances in the plastic.

[0021] S3: After the plastic particles are melted, the liquid pump can be started to enable the liquid suction pipe to extract the plastic solution inside the holding seat and discharge the solution after melting the plastic particles into the reaction cylinder in a certain quantity. Then, according to the substance to be detected, the corresponding detection reaction reagent is added into the reaction cylinder through the additive pipe. The detection reaction reagent can react with one substance in the plastic solution, and the reagent detector can detect the detection reaction reagent added through the additive pipe. When the reagent detector detects the detection reaction reagent, it means that too much detection reaction reagent has been added into the reaction cylinder through the additive pipe. Therefore, the content of the reaction components in the corresponding plastic solution can be determined and displayed on the display screen A.

[0022] S4: After detecting various components inside the plastic solution through the detection box body, gas can be supplied to the interior of the flame sprayer through the liquid tank to make the flame sprayer spray flames, thereby burning the plastic solution inside the holding seat. During the burning process of the plastic solution, gases are generated. After the gases rise, they can enter the interior of the gas detection box through the gas guide pipe. The gas detector inside the gas detection box can detect the components of the gases passing through the interior of the gas detection box, thereby determining the content of the components contained in the plastic particles based on the component content in the gases, and thus detecting the components of the substances in the plastic. Moreover, the burned plastic solution will produce ash residues, and the content of the remaining components can be determined by measuring the weight of the ash residues with a weighing device.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. By starting the liquid pump, the liquid suction pipe extracts the plastic solution inside the holding seat and discharges the plastic solution into the reaction cylinder in a certain quantity. Then, according to the substance to be detected, the corresponding detection reaction reagent is added into the reaction cylinder through the additive pipe. The detection reaction reagent can react with one substance in the plastic solution, and the reagent detector can detect the detection reaction reagent added through the additive pipe. When the reagent detector detects the detection reaction reagent, it means that too much detection reaction reagent has been added into the reaction cylinder through the additive pipe. Therefore, the content of the reaction components in the corresponding plastic solution can be determined and displayed on the display screen A. The detection is convenient and the detection effect is good.

[0025] 2. After detecting various components inside the plastic solution through the provided detection box body, gas can be supplied into the flamethrower through the liquid tank to make the flamethrower spray flames, thereby burning the plastic solution inside the holding seat. During the burning process of the plastic solution, gases are generated. After the gases rise, they can enter the interior of the gas detection box through the gas guide pipe. The gas detector inside the gas detection box can detect the components of the gases passing through the interior of the gas detection box, thereby determining the content of this component contained in the plastic particles based on the component content in the gases, and thus detecting the components of the substances in the plastic. Moreover, the burned plastic solution will produce ash residues, and the content of the remaining components can be determined by the weight of the ash residues measured by the weighing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional external structure schematic diagram of the present invention;

[0027] Figure 2 is a bottom three-dimensional structure schematic diagram of the present invention;

[0028] Figure 3 is a top view structure schematic diagram of the present invention;

[0029] Figure 4 is a sectional structure schematic diagram of the present invention;

[0030] Figure 5 is a partial sectional structure schematic diagram of the present invention;

[0031] Figure 6 is a sectional structure schematic diagram of the gas detection box of the present invention.

[0032] In the figure: 1, holding cylinder; 2, detection box body; 3, bottom plate; 4, liquid pump; 5, display screen A; 6, box door; 7, additive pipe; 8, liquid extraction pipe; 9, gas detection box; 10, air outlet hole; 11, liquid guide pipe; 12, display screen B; 13, concave card seat; 14, card strip; 15, cylinder cover A; 16, cylinder cover B; 17, stirring motor; 18, handle; 19, cover plate; 20, support leg; 21, weighing device; 22, heating plate; 23, connecting rod; 24, liquid tank; 25, mounting seat; 26, stirring rod; 27, stirring blade; 28, support column; 29, flamethrower; 30, holding seat; 31, gas guide pipe; 32, reagent detector; 33, reaction cylinder; 34, gas detector. DETAILED DESCRIPTION OF THE INVENTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1 - 6 shown, a detection device for the composition content of each monomer unit in a plastic includes a storage cylinder 1 and a plurality of detection boxes 2. An inner cover A15 is clamped inside the top of the storage cylinder 1, an inner cover B16 is clamped inside the inner cover A15, a stirring motor 17 is fixedly installed on the top of the inner cover B16, a connecting rod 23 is fixedly installed at the output end of the stirring motor 17, another end of the connecting rod 23 is fixedly installed with a mounting seat 25, two liquid tanks 24 are installed inside the mounting seat 25, two flamethrowers 29 are fixedly installed at the bottom of the mounting seat 25, a stirring rod 26 is fixedly installed at the bottom of the mounting seat 25, stirring blades 27 are fixedly installed on the outer side of the stirring rod 26, a gas guide pipe 31 communicates with the top of the inner cover A15, the top of the gas guide pipe 31 communicates with a gas detection box 9, a gas detector 34 is fixedly installed inside the gas detection box 9, an air outlet hole 10 is opened at the top of the gas detection box 9, a support column 28 is fixedly installed at the bottom of the inner cavity of the storage cylinder 1, a weighing device 21 is fixedly installed inside the top of the support column 28, a storage seat 30 is fixedly installed on the top of the weighing device 21, a heating plate 22 is fixedly installed at the bottom of the storage seat 30, a display screen B12 is fixedly installed on the outer side of the storage cylinder 1, an additive pipe 7 communicates with the top of the detection box 2, a liquid guide pipe 11 communicates with the back of the detection box 2, the other end of the liquid guide pipe 11 communicates with a liquid pump 4, a liquid suction pipe 8 communicates with the liquid inlet end of the liquid pump 4, a reaction cylinder 33 is installed inside the bottom of the detection box 2, a reagent detector 32 is fixedly installed at the bottom of the inner cavity of the reaction cylinder 33, and a display screen A5 is fixedly installed at the top of the front of the detection box 2.

[0035] The working principle of the above technical solution is as follows:

[0036] First, place the plastic particles inside the holding seat 30. The weighing device 21 weighs the plastic particles inside the holding seat 30 in real time and transmits the information to the display screen B12 for display. Then, snap the barrel cover A15 inside the top of the holding barrel 1, and then snap the barrel cover B16 inside the barrel cover A15, so that the stirring rod 26 and the stirring blades 27 are located inside the holding seat 30. Then, start the stirring motor 17. The output end of the stirring motor 17 can drive the connecting rod 23 to rotate, thereby driving the mounting seat 25 to rotate, and finally driving the stirring rod 26 and the stirring blades 27 to rotate to stir the plastic particles placed inside the holding seat 30. At the same time, start the heating plate 22 to heat the holding seat 30, so that the plastic particles inside the holding seat 30 melt into a liquid. During the process of the plastic particles melting into a liquid, gas is generated. After the gas rises, it can enter the inside of the gas detection box 9 through the air duct 31. The gas detector 34 inside the gas detection box 9 can detect the components of the gas passing through the inside of the gas detection box 9, so as to determine the content of the component contained in the plastic particles according to the component content in the gas, and thus detect the components of the substances in the plastic. After the plastic particles melt, the liquid pump 4 can be started to make the liquid extraction pipe 8 extract the plastic solution inside the holding seat 30 and discharge the plastic solution into the reaction cylinder 33 in a certain amount. Then, according to the substances to be detected, the corresponding detection reaction reagent is added to the inside of the reaction cylinder 33 through the additive pipe 7. The detection reaction reagent can react with one of the substances in the plastic solution, and the reagent detector 32 can detect the detection reaction reagent added through the additive pipe 7. When the reagent detector 32 detects the detection reaction reagent, it means that too much detection reaction reagent has been added to the inside of the reaction cylinder 33 through the additive pipe 7. Therefore, the content of the reaction components in the corresponding plastic solution can be determined and displayed on the display screen A5. After detecting various components inside the plastic solution through the detection box body 2, gas can be supplied to the inside of the flame sprayer 29 through the liquid tank 24 to make the flame sprayer 29 spray flames, so as to burn the plastic solution inside the holding seat 30. During the burning process of the plastic solution, gas is generated. After the gas rises, it can enter the inside of the gas detection box 9 through the air duct 31. The gas detector 34 inside the gas detection box 9 can detect the components of the gas passing through the inside of the gas detection box 9, so as to determine the content of the component contained in the plastic particles according to the component content in the gas, and thus detect the components of the substances in the plastic. And the burned plastic solution will generate ash residues, and the content of the remaining components can be determined by the weight of the ash residues measured by the weighing device 21.

[0037] In another embodiment, as Figures 1 - 6 shown, the end of the liquid extraction pipe 8 far from the liquid pump 4 penetrates through the side wall of the holding barrel 1 and is communicated with the holding seat 30. Solenoid valves are installed on the outer sides of the additive pipe 7, the liquid extraction pipe 8, and the liquid guide pipe 11.

[0038] After the plastic particles are melted, the liquid pump 4 can be started to enable the liquid suction pipe 8 to extract the plastic solution inside the holding seat 30, and discharge the plastic solution into the reaction cylinder 33 in a certain amount. Then, according to the substance to be detected, the corresponding detection reaction reagent is added into the reaction cylinder 33 through the additive pipe 7. The detection reaction reagent can react with one substance in the plastic solution, and the reagent detector 32 can detect the detection reaction reagent added through the additive pipe 7. When the reagent detector 32 detects the detection reaction reagent, it means that too much detection reaction reagent is added into the reaction cylinder 33 through the additive pipe 7. Therefore, the content of the reaction component in the corresponding plastic solution can be determined and displayed on the display screen A5. The detection is convenient and the detection effect is good. The function of the electromagnetic valve is to prevent the plastic solution from flowing out of the liquid suction pipe 8 and the liquid guide pipe 11, and the additive pipe 7 can be opened and closed at any time.

[0039] In another embodiment, as Figures 1 - 6 shown, the front of the detection box body 2 is all installed with a box door 6 through hinges.

[0040] The front of the detection box body 2 can be sealed and blocked through the box door 6.

[0041] In another embodiment, as Figures 1 - 6 shown, four concave card seats 13 are fixedly installed on the top of the cylinder cover A15, four card strips 14 are fixedly installed on the outside of the cylinder cover B16, the four card strips 14 are respectively clamped inside the four concave card seats 13, a sealing ring is fixedly installed on the outside of the cylinder cover B16, handles 18 are fixedly installed on both sides of the top of the cylinder cover B16, and cover plates 19 are clamped inside both sides of the top of the cylinder cover B16, and pull handles are fixedly installed on the tops of the cover plates 19.

[0042] The four card strips 14 and the four concave card seats 13 can install the cylinder cover B16 inside the cylinder cover A15, so as to realize that the cylinder cover B16 is clamped inside the cylinder cover A15, and the stirring rod 26 and the stirring blade 27 are located inside the holding seat 30, so as to stir the plastic particles inside the holding seat 30. The set handle 18 facilitates pulling up the cylinder cover B16, and the set pull handle facilitates pulling up the cover plate 19.

[0043] In another embodiment, as Figures 1 - 6 shown, a bottom plate 3 is fixedly installed at the bottom of the holding cylinder 1, and support legs 20 are fixedly installed at the bottom of the bottom plate 3. There are four support legs 20, and the four support legs 20 are symmetrically distributed in a rectangle at the bottom of the bottom plate 3.

[0044] The whole device can be supported by the set four support legs 20.

[0045] Detection method for the composition content of each monomer unit in a plastic, comprising the following steps:

[0046] S1: First, place the plastic particles inside the holding seat 30. The weighing device 21 weighs the plastic particles inside the holding seat 30 in real time and transmits the information to the display screen B12 for display. Then, snap the cylinder cover A15 inside the top of the holding cylinder 1, and then snap the cylinder cover B16 inside the cylinder cover A15, so that the stirring rod 26 and the stirring blades 27 are located inside the holding seat 30. Then, start the stirring motor 17. The output end of the stirring motor 17 can drive the connecting rod 23 to rotate, thereby driving the mounting seat 25 to rotate, and finally driving the stirring rod 26 and the stirring blades 27 to rotate to stir the plastic particles placed inside the holding seat 30. At the same time, start the heating plate 22 to heat the holding seat 30, so that the plastic particles inside the holding seat 30 melt into a liquid.

[0047] S2: During the process of the plastic particles melting into a liquid, gases are generated. After the gases rise, they can enter the inside of the gas detection box 9 through the gas guide pipe 31. The gas detector 34 inside the gas detection box 9 can detect the components of the gases passing through the inside of the gas detection box 9. Thus, according to the component content in the gases, the content of the component contained in the plastic particles can be determined, so as to detect the components of the substances in the plastic.

[0048] S3: After the plastic particles are melted, the liquid pump 4 can be started to make the liquid suction pipe 8 extract the solution after the plastic particles inside the holding seat 30 are melted, and discharge the plastic solution into the inside of the reaction cylinder 33 in a certain quantity. Then, according to the substance to be detected, add the corresponding detection reaction reagent into the inside of the reaction cylinder 33 through the additive pipe 7. The detection reaction reagent can react with one substance in the plastic solution, and the reagent detector 32 can detect the detection reaction reagent added through the additive pipe 7. When the reagent detector 32 detects the detection reaction reagent, it means that too much detection reaction reagent has been added into the inside of the reaction cylinder 33 through the additive pipe 7. Therefore, the content of the reaction component in the corresponding plastic solution can be determined and displayed on the display screen A5.

[0049] S4: After detecting various components inside the plastic solution through the detection box body 2, gas can be supplied into the flamethrower 29 through the liquid tank 24 to make the flamethrower 29 spray flames, thereby burning the plastic solution inside the holding seat 30. During the burning process of the plastic solution, gas is generated. After the gas rises, it can enter the inside of the gas detection box 9 through the air duct 31. The gas detector 34 inside the gas detection box 9 can detect the components of the gas passing through the inside of the gas detection box 9, so as to determine the content of the component contained in the plastic particles according to the component content in the gas, thereby detecting the components of the substances in the plastic. In addition, the burned plastic solution will generate ash residues, and the content of the remaining components can be determined by the weight of the ash residues measured by the weighing device 21.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for the composition content of each monomer unit in plastics, comprising a storage cylinder (1) and a plurality of detection boxes (2), characterized in that: Inside the top of the storage cylinder (1), a cylinder cover A (15) is snap-fitted. Inside the cylinder cover A (15), a cylinder cover B (16) is snap-fitted. On the top of the cylinder cover B (16), a stirring motor (17) is fixedly installed. At the output end of the stirring motor (17), a connecting rod (23) is fixedly installed. At the other end of the connecting rod (23), a mounting seat (25) is fixedly installed. Inside the mounting seat (25), two liquid tanks (24) are installed. At the bottom of the mounting seat (25), two flamethrowers (29) are fixedly installed. At the bottom of the mounting seat (25), a stirring rod (26) is fixedly installed. On the outer side of the stirring rod (26), stirring blades (27) are fixedly installed. On the top of the cylinder cover A (15), a gas guide pipe (31) is communicated. On the top of the gas guide pipe (31), a gas detection box (9) is communicated. Inside the gas detection box (9), a gas detector (34) is fixedly installed. On the top of the gas detection box (9), an air outlet hole (10) is opened. At the bottom of the inner cavity of the storage cylinder (1), a support column (28) is fixedly installed. Inside the top of the support column (28), a weighing device (21) is fixedly installed. On the top of the weighing device (21), a storage seat (30) is fixedly installed. At the bottom of the storage seat (30), a heating plate (22) is fixedly installed. On the outer side of the storage cylinder (1), a display screen B (12) is fixedly installed. On the top of the detection box body (2), an additive pipe (7) is communicated. On the back of the detection box body (2), a liquid guide pipe (11) is communicated. At the other end of the liquid guide pipe (11), a liquid pump (4) is communicated. The liquid inlet end of the liquid pump (4) is communicated with a liquid suction pipe (8). The ends of the liquid suction pipe (8) far away from the liquid pump (4) all penetrate through the side wall of the storage cylinder (1) and are communicated with the storage seat (30). Solenoid valves are installed on the outer sides of the additive pipe (7), the liquid suction pipe (8) and the liquid guide pipe (11). Inside the bottom of the detection box body (2), a reaction cylinder (33) is installed. At the bottom of the inner cavity of the reaction cylinder (33), a reagent detector (32) is fixedly installed. On the top of the front of the detection box body (2), a display screen A (5) is fixedly installed.

2. The detection device for the composition content of each monomer unit in a plastic according to claim 1, characterized in that: On the front of the detection box body (2), a box door (6) is installed through hinges.

3. The detection device for the composition content of each monomer unit in a plastic according to claim 1, characterized in that: On the top of the cylinder cover A (15), four concave card seats (13) are fixedly installed. On the outer side of the cylinder cover B (16), four card strips (14) are fixedly installed. The four card strips (14) are respectively snap-fitted inside the four concave card seats (13). On the outer side of the cylinder cover B (16), a sealing ring is fixedly installed.

4. The detection device for the composition content of each monomer unit in a plastic according to claim 1, characterized in that: On both sides of the top of the cylinder cover B (16), handles (18) are fixedly installed. Inside both sides of the top of the cylinder cover B (16), covers (19) are snap-fitted. On the top of the covers (19), handles are fixedly installed.

5. The detection device for the composition content of each monomer unit in a plastic according to claim 1, characterized in that: At the bottom of the storage cylinder (1), a bottom plate (3) is fixedly installed. At the bottom of the bottom plate (3), support legs (20) are fixedly installed. There are four support legs (20), and the four support legs (20) are symmetrically distributed in a rectangle at the bottom of the bottom plate (3).

6. The detection method of a detection device for the composition content of each monomer unit in a plastic according to any one of claims 1-5, characterized in that: Including the following steps: S1: First, place the plastic particles inside the holding seat (30). The weighing device (21) weighs the plastic particles inside the holding seat (30) in real time and transmits the information to the display screen B (12) for display. Then, snap the cylinder cover A (15) inside the top of the holding cylinder (1), and then snap the cylinder cover B (16) inside the cylinder cover A (15) so that the stirring rod (26) and the stirring blades (27) are inside the holding seat (30). Then start the stirring motor (17). The output end of the stirring motor (17) can drive the connecting rod (23) to rotate, thereby driving the mounting seat (25) to rotate, and finally driving the stirring rod (26) and the stirring blades (27) to rotate to stir the plastic particles placed inside the holding seat (30). At the same time, start the heating plate (22) to heat the holding seat (30), so that the plastic particles inside the holding seat (30) melt into a liquid; S2: During the process of melting the plastic particles into a liquid, gases are generated. After the gases rise, they can enter the inside of the gas detection box (9) through the gas guide pipe (31). The gas detector (34) inside the gas detection box (9) can detect the components of the gases passing through the inside of the gas detection box (9), so as to determine the content of the components contained in the plastic particles based on the component content in the gases, and thus detect the components of the substances in the plastic; S3: After the plastic particles are melted, the liquid pump (4) can be started to enable the liquid suction pipe (8) to extract the solution after melting the plastic particles inside the holding seat (30) and discharge the plastic solution into the reaction cylinder (33) in a certain amount. Then, according to the substances to be detected, add the corresponding detection reaction reagents into the reaction cylinder (33) through the additive pipe (7). The detection reaction reagents can react with one of the substances in the plastic solution, and the reagent detector (32) can detect the detection reaction reagents added through the additive pipe (7). When the reagent detector (32) detects the detection reaction reagents, it means that too much detection reaction reagents have been added into the reaction cylinder (33) through the additive pipe (7). Therefore, the content of the reaction components in the corresponding plastic solution can be determined and displayed on the display screen A (5); S4: After detecting various components inside the plastic solution through the detection box body (2), gas can be supplied to the inside of the flame sprayer (29) through the liquid tank (24) to make the flame sprayer (29) spray flames, thereby burning the plastic solution inside the holding seat (30). During the burning process of the plastic solution, gases are generated. After the gases rise, they can enter the inside of the gas detection box (9) through the gas guide pipe (31). The gas detector (34) inside the gas detection box (9) can detect the components of the gases passing through the inside of the gas detection box (9), so as to determine the content of the components contained in the plastic particles based on the component content in the gases, and thus detect the components of the substances in the plastic. And the plastic solution after burning will generate ash residues, and the content of the remaining components can be determined by the weight of the ash residues measured by the weighing device (21).

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