Biodegradable plastic product detection device

Abstract

The invention provides a biodegradable plastic product detection device, which is applied to the technical field of plastic film detection, and is characterized in that a film-shaped plastic product to be detected is firmly clamped through mutual approaching of a first cylinder body and a second cylinder body, and airflow suction is performed through a suction pump; the air pressure sensor fixed in the second cylinder is matched to monitor the air pressure intensity in real time, the tensile strength of the biodegradable plastic product can be measured by monitoring the air pressure change in the second cylinder, the operation is convenient and efficient, and meanwhile the tensile strength of the biodegradable plastic product can be measured by means of airflow suction. Therefore, the tearing force provided by suction can be uniformly dispersed in the corresponding range of the film-shaped plastic product in the first annular plate, so that the acting force when the film-shaped plastic product is torn for detection is uniformly dispersed and does not intensively act on a certain point position or a local area; and the accuracy of detecting the tensile strength of the film-shaped biodegradable plastic product by using the device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of plastic film detection, and in particular to a biodegradable plastic product detection device. Background Art

[0002] Biodegradable plastics refer to a type of plastic that can be degraded by microorganisms existing in nature (such as bacteria, molds, fungi and algae). They are usually used in environmentally friendly packaging. Biodegradable plastics are processed into films and used to produce biodegradable environmentally friendly plastic bags, which are widely used in the existing technology.

[0003] In order to ensure the quality of film-like biodegradable plastic products, various tests are usually required after their processing. Among them, the tensile performance test of biodegradable plastic products is particularly important. In the prior art, the tensile performance of film-like plastic products is usually tested by fixing one end and clamping the other end to apply tension. In the above operation method, the tearing force applied to the film-like plastic product during the test will be concentrated on a certain point or local area, resulting in an uneven force application range, which is easy to affect the accuracy of the test results.

[0004] Therefore, a biodegradable plastic product detection device is proposed to solve some problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present application is to avoid the situation in which the force applied to a thin film plastic product is concentrated at a certain point or in a local area during the inspection, resulting in an uneven force application range and affecting the inspection accuracy. Compared with the prior art, a biodegradable plastic product inspection device is provided, comprising a box body, a first cylinder body is installed at the lower middle position of the box body, and a first ring plate is fixed around the top end of the first cylinder body, a second cylinder body arranged directly above the first cylinder body is slidably installed in the box body, and a second ring plate is fixed around the bottom end of the second cylinder body, a vertically arranged electric push rod is fixedly installed in the box body, and the telescopic end of the electric push rod is fixedly connected to the second cylinder body, a pump is installed on the outside of the box body, a vertically arranged connecting pipe is slidably penetrated through the top end of the second cylinder body, and the connecting pipe is fixedly connected to the air suction port of the pump, and an air pressure sensor arranged below the connecting pipe is fixedly installed in the second cylinder body.

[0006] Furthermore, a bearing plate arranged above the second ring plate is fixed around the lower end of the second cylinder, and an annular chamber connected to the interior of the second cylinder is arranged between the bearing plate and the second ring plate, and a plurality of circumferentially distributed fan-shaped baffles are rotatably installed in the annular chamber, a turntable arranged on the bearing plate is rotatably sleeved on the outer side of the lower end of the second cylinder, and a plurality of circumferentially distributed slide grooves are provided on the turntable, a vertically arranged cylindrical rod is fixedly installed on the fan-shaped baffle, and the cylindrical rod moves through the corresponding slide grooves, a gear ring coaxially arranged therewith is fixedly installed on the turntable, a first servo motor is fixedly installed on the outer end wall of the second cylinder, and a first gear meshing with the gear ring is fixedly installed on the driving shaft of the first servo motor.

[0007] Furthermore, a sealing box is fixedly sleeved on the outer side of the second ring plate, and the bearing plate, fan-shaped baffle, turntable, slide groove, cylindrical rod, gear ring and first gear are all arranged on the inner side of the sealing box, and the sealing box is arranged as a closed structure only connected to the interior of the second cylinder.

[0008] Furthermore, a first convex ring is fixedly installed on the top of the first ring plate and a second convex ring is fixedly installed on the bottom of the second ring plate, and the second convex ring is correspondingly installed up and down with the first convex ring.

[0009] Furthermore, two first convex rings and two second convex rings are provided, and the two first convex rings and the two second convex rings are provided on the inner and outer sides, and a first annular cavity is formed between the two first convex rings and in cooperation with the first ring plate, and a second annular cavity is formed between the two second convex rings and in cooperation with the second ring plate, and a hose connected to the interior of the first annular cavity is fixedly installed at the bottom of the first ring plate, and the hose is fixedly connected to the air suction port of the pump.

[0010] Furthermore, a filter element is fixedly installed in the first cylinder, and the filter element is composed of overlapping multiple layers of filtering structures.

[0011] Furthermore, an air flow velocity sensor arranged above the filter element is fixedly installed in the first cylinder.

[0012] Furthermore, a first bracket and a second bracket are fixedly installed on both sides of the middle position of the first cylinder and the second cylinder and are longitudinally inserted. The front and rear ends of the first bracket are rotatably installed with symmetrically arranged first conveying rollers, and a first ring belt symmetrically arranged on the left and right is rotatably sleeved between the two first conveying rollers. The front and rear ends of the second bracket are rotatably installed with symmetrically arranged second conveying rollers, and a second ring belt symmetrically arranged on the left and right is rotatably sleeved between the two second conveying rollers, and the second ring belt is arranged correspondingly to the first ring belt in upper and lower directions.

[0013] Furthermore, a second servo motor is fixedly installed on the outer side of the first bracket, and the second servo motor is transmission connected to one of the first conveying rollers, a second gear is fixedly installed on one of the second conveying rollers, a third gear meshing with the second gear is rotatably installed on the first bracket, and the third gear is transmission connected to the first conveying roller.

[0014] Furthermore, a fourth gear is rotatably mounted on the inner end wall of the box body and is flush with the middle position of the first ring plate and the second ring plate, a first rack rod meshing with the fourth gear is fixedly mounted on the first cylinder body, a second rack rod meshing with the fourth gear is fixedly mounted on the second cylinder body, and the second rack rod and the first rack rod are symmetrically arranged about the central axis.

[0015] Compared with the prior art, the advantages of this application are:

[0016] (1) The first cylinder and the second cylinder, which are symmetrically arranged up and down, are installed in a box body, and the first ring plate and the second ring plate are respectively fixed at the ends of the first cylinder and the second cylinder that are close to each other, so that the first cylinder and the second cylinder are close to each other, the film-like plastic product to be tested can be firmly clamped, and the connecting pipe connected to the suction port of the pump is slidably inserted into the top of the second cylinder, and the air pressure intensity is monitored in real time in conjunction with the air pressure sensor fixed in the second cylinder, so that the device can measure the tensile strength of the biodegradable plastic product by monitoring the air pressure change in the second cylinder, and the operation is convenient and efficient. At the same time, with the help of air flow suction, the tearing force provided by the suction can be evenly dispersed on the corresponding film-like plastic product range in the first ring plate, so that the force when tearing the film-like plastic product for testing is evenly dispersed, and will not be concentrated on a certain point or local area, which can effectively improve the accuracy of using the device to detect the tensile strength of the film-like biodegradable plastic product.

[0017] (2) By evenly distributing the rotatable fan-shaped baffles around the connection between the second cylinder and the second ring plate, cooperating with the rotation of the turntable, driving the cylindrical rod vertically inserted in the slide groove to move, a plurality of fan-shaped baffles can be synchronously moved, and the actual inner diameter of the connection between the second cylinder and the second ring plate can be adjusted, thereby realizing the detection of the tensile properties of the film-like biodegradable plastic product under different force areas. The adjustment is flexible, and multiple data comparisons can be performed during quality inspection, which is conducive to improving the comprehensiveness and accuracy of the tensile properties detection of the film-like biodegradable plastic product.

[0018] (3) By fixing two first convex rings arranged inside and outside the first ring plate, fixing two second convex rings arranged inside and outside the second ring plate, and cooperating with a pump to pressurize and inflate the first annular cavity through a hose, the film-like plastic product clamped between the two first convex rings and the two second convex rings can be deformed and bulged upward, forming a curved structure between the first convex ring and the second convex ring, which can effectively improve the complexity of the clamped part of the film-like plastic product, and is conducive to further improving the stability of the film-like plastic product when it is flattened and clamped.

[0019] (4) Through the support of the two front and rear first conveying rollers and the two front and rear second conveying rollers, the continuously rotatable first and second ring belts are symmetrical in the upper and lower parts, and are inserted on the left and right sides of the middle position of the first ring plate and the second ring plate. In conjunction with the meshing reversing of the second gear and the third gear, the film-like plastic product to be tested can be conveyed from the outside to between the first ring plate and the second ring plate for clamping. The operation is convenient, and the staff is kept away from the first ring plate and the second ring plate that exert the squeezing and clamping effects, which is conducive to improving the operational safety of the device during actual use.

[0020] (5) The first rack rod and the second rack rod are symmetrically arranged about the central axis and are respectively fixedly connected to the first cylinder body and the second cylinder body, and the fourth gear meshing with the first rack rod and the second rack rod is rotatably installed on the inner end wall of the box body. With the help of the meshing reversal of the fourth gear, the first rack rod and the second rack rod, the first cylinder body and the second cylinder body can move synchronously relative to each other, which is beneficial to improving the efficiency of the first ring plate and the second ring plate when opening and closing, and further beneficial to improving the efficiency of the staff when using the device to detect biodegradable plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a stereogram of the normal state of this application;

[0022] Figure 2 This is a three-dimensional diagram of the first cylinder and the second cylinder of the present application when separated;

[0023] Figure 3 This is a three-dimensional view of the second cylinder and the second ring plate of the present application from the bottom perspective;

[0024] Figure 4 This is a disassembled diagram of the bottom structure of the second cylinder of this application;

[0025] Figure 5 For this application Figure 1 Front view of the middle structure;

[0026] Figure 6 For this application Figure 1 Front view of the structure in section;

[0027] Figure 7For this application Figure 1 Side cross-sectional view of the middle structure;

[0028] Figure 8 Stereoscopic image when detection is enabled for this application;

[0029] Fig. 9 This is a three-dimensional diagram of the first cylinder and the second cylinder of the present application when they are closed;

[0030] Fig.10 For this application Figure 8 Front view of the structure in section;

[0031] Fig.11 For this application Figure 8 Side cross-sectional view of the middle structure;

[0032] Fig.12 For this application Figure 8 Top view of the structure.

[0033] Description of the numbers in the figure:

[0034] 1. Box; 101. First cylinder; 102. First ring plate; 103. Second cylinder; 104. Second ring plate; 105. Pump; 106. Connecting pipe; 2. Carrying plate; 201. Fan-shaped baffle; 202. Turntable; 203. Slide; 204. Cylindrical rod; 205. Gear ring; 206. First servo motor; 207. First gear; 208. Sealing box; 3. First convex ring; 301. Second convex ring; 302. First annular cavity; 3 03, second annular cavity; 304, hose; 305, filter element; 306, air flow velocity sensor; 307, air pressure sensor; 4, first bracket; 401, first conveyor roller; 402, first ring belt; 403, second bracket; 404, second conveyor roller; 405, second ring belt; 406, second servo motor; 407, second gear; 408, third gear; 5, fourth gear; 501, first rack rod; 502, second rack rod. DETAILED DESCRIPTION

[0035] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0036] Embodiment 1:

[0037] The present invention provides a biodegradable plastic product detection device, please refer to Figure 1 - Fig.12, including a box body 1, a first cylinder 101 is installed in the middle position at the lower part of the box body 1, and a first ring plate 102 is fixed around the top of the first cylinder 101, a second cylinder 103 arranged just above the first cylinder 101 is slidably installed in the box body 1, and a second ring plate 104 is fixed around the bottom end of the second cylinder 103, a vertically arranged electric push rod is fixedly installed in the box body 1, and the telescopic end of the electric push rod is fixedly connected to the second cylinder 103, a pump 105 is installed on the outside of the box body 1, a vertically arranged connecting pipe 106 is slidably penetrated through the top of the second cylinder 103, and the connecting pipe 106 is fixedly connected to the air suction port of the pump 105, and an air pressure sensor 307 arranged below the connecting pipe 106 is fixedly installed in the second cylinder 103.

[0038] When the device is used, the staff connects the device to an external power supply so that the external power supply provides power support for the device. Then, the staff can control the device to be powered on and started. The staff flattens the film-like biodegradable plastic product to be tested between the first ring plate 102 and the second ring plate 104. Then, the electric push rod is powered on and started to control the second cylinder 103 to move downward with the second ring plate 104 in the first cylinder 101, so that the first ring plate 102 and the second ring plate 104 approach each other, and finally the film-like plastic product is clamped between the first ring plate 102 and the second ring plate 104. Then, the pump 105 is powered on and started to evacuate the second cylinder 103 through the connecting pipe 106. Under the negative pressure formed by the airflow suction, the film-like plastic product firmly clamped between the first ring plate 102 and the second ring plate 104 will be compressed. 04, causing the film-like plastic product to deform into the second cylinder 103 along the air flow suction direction, and the air pressure sensor 307 installed in the second cylinder 103 will continuously record the air pressure intensity in the second cylinder 103, and continuously increase the suction force of the pump 105 until the film-like plastic product is torn. During this process, the air pressure intensity in the second cylinder 103 recorded by the air pressure sensor 307 gradually decreases, and instantly increases when the film-like plastic product is torn. By analyzing the air pressure intensity in the second cylinder 103 before and after the film-like plastic product is torn, the tensile strength of the film-like biodegradable plastic product can be clearly obtained. The collected data is collected on the server host, a curve graph is generated, and displayed on the display screen for easy observation by the staff.

[0039] During the detection process, with the help of airflow suction, the tearing force provided by the suction can be evenly dispersed on the corresponding range of the film-like plastic products in the first ring plate 102, so that the force when tearing the film-like plastic products for detection is evenly dispersed and will not be concentrated on a certain point or local area, which can effectively improve the accuracy of using the device to detect the tensile strength of film-like biodegradable plastic products.

[0040] See also Figure 4, Figure 6 and Figure 7 The lower end of the second cylinder 103 is fixedly surrounded by a bearing plate 2 arranged above the second ring plate 104, and an annular chamber connected to the interior of the second cylinder 103 is arranged between the bearing plate 2 and the second ring plate 104, and a plurality of fan-shaped baffles 201 distributed around are rotatably installed in the annular chamber, and a rotating disk 202 arranged on the bearing plate 2 is rotatably sleeved on the outer side of the lower end of the second cylinder 103, and a plurality of sliding grooves 203 distributed around are opened on the rotating disk 202, and a vertical cylindrical rod 204 is fixedly installed on the fan-shaped baffle 201, and the cylindrical rod 204 movably penetrates into the corresponding sliding groove 203, A gear ring 205 coaxially arranged therewith is fixedly mounted on the turntable 202, a first servo motor 206 is fixedly mounted on the outer end wall of the second cylinder 103, and a first gear 207 meshing with the gear ring 205 is fixedly mounted on the driving shaft of the first servo motor 206, a sealing box 208 is fixedly sleeved on the outer side of the second ring plate 104, the bearing plate 2, the fan-shaped baffle 201, the turntable 202, the slide groove 203, the cylindrical rod 204, the gear ring 205 and the first gear 207 are all arranged on the inner side of the sealing box 208, and the inside of the sealing box 208 is arranged as a closed structure which is only connected to the interior of the second cylinder 103.

[0041] When the device is used, the staff can flexibly adjust the force area of ​​the film-like plastic product when it is sucked and torn by the airflow according to the actual needs of the test. The staff drives the first servo motor 206 to start, driving the first gear 207 fixedly installed on its driving shaft to rotate, and drives the turntable 202 to rotate by means of the meshing of the first gear 207 and the gear ring 205. During the rotation of the turntable 202 around the second cylinder 103, it drives the cylindrical rod 204 vertically inserted in the slide groove 203 to move synchronously. The movement of the cylindrical rod 204 drives the multiple fan-shaped baffles 201 to rotate synchronously, forming a similar adjustable aperture structure, so as to achieve the second cylinder 103. 03 and the second ring plate 104. When the plurality of fan-shaped baffles 201 deflect into the second cylinder 103, resulting in a reduction in the inner diameter of the connection between the second cylinder 103 and the second ring plate 104, the fan-shaped baffles 201 rotated into the second cylinder 103 can stop the film-like plastic product, so that only the area not stopped by the fan-shaped baffles 201 is subjected to airflow suction, thereby realizing the detection of the tensile performance of the film-like biodegradable plastic product under different force areas. The adjustment is flexible, and multiple data comparisons can be performed during quality inspection, which is conducive to improving the comprehensiveness and accuracy of the tensile performance detection of the film-like biodegradable plastic product.

[0042] See also Figure 2 , Figure 3 and Fig. 9A first convex ring 3 is fixedly installed on the top of the first ring plate 102, and a second convex ring 301 is fixedly installed on the bottom of the second ring plate 104, and the second convex ring 301 is arranged corresponding to the first convex ring 3 up and down. There are two first convex rings 3 and two second convex rings 301, and the two first convex rings 3 and the two second convex rings 301 are arranged on the inner and outer sides. A first annular cavity 302 is formed between the two first convex rings 3 in cooperation with the first ring plate 102, and a second annular cavity 303 is formed between the two second convex rings 301 in cooperation with the second ring plate 104. A hose 304 communicating with the inside of the first annular cavity 302 is fixedly installed on the bottom of the first ring plate 102, and the hose 304 is fixedly connected with the suction port of the suction pump 105. When the device is used, the first ring plate 102 and the second ring plate 104 are used to During the clamping process of the film-like plastic product, the two first convex rings 3 fixed around the first ring plate 102 and the two second convex rings 301 fixed around the second ring plate 104 cooperate up and down to squeeze and clamp the film-like plastic product. Under the double clamping, the firmness of the film-like plastic product during clamping can be effectively improved. During the clamping process, the pump 105 will supply air to the first annular cavity 302 through the hose 304. Under the pressurized air flow, the film-like plastic product clamped between the two first convex rings 3 and the two second convex rings 301 is deformed and bulged upward, and a curved structure is formed between the first convex ring 3 and the second convex ring 301, which can effectively increase the complexity of the clamped part of the film-like plastic product, which is conducive to further improving the stability of the film-like plastic product when it is flattened and clamped.

[0043] See also Figure 6 - Figure 7 and Fig.10 - Fig.11, a filter element 305 is fixedly installed in the first cylinder 101, and the filter element 305 is composed of a multi-layer overlapping filtering structure, and an airflow velocity sensor 306 arranged above the filter element 305 is fixedly installed in the first cylinder 101. When the device is in use, the filter element 305 installed in the first cylinder 101 can filter the bottom airflow to prevent impurities carried in the external airflow from entering the pump 105 through the connecting pipe 106 after the film-like plastic product is torn, which can effectively ensure the stability of the device during long-term operation. By setting the filter element 305 as a multi-layer overlapping filtering structure, the effect of the filter element 305 on filtering dust impurities in the airflow can be effectively improved while ensuring smooth airflow. By fixing the airflow velocity sensor 306 in the first cylinder 101, the first The air flow velocity in the cylinder 101 is measured. When the film-like plastic product is not torn, the air flow sucked in the second cylinder 103 cannot act on the first cylinder 101. At this time, the air flow velocity sensor 306 detects that the air flow velocity in the first cylinder 101 is close to zero. At the moment when the film-like plastic product is torn, the air flow suction in the second cylinder 103 will pass through the broken film-like plastic product and act on the first cylinder 101, so that a high-speed air flow is generated in the first cylinder 101. The air flow velocity sensor 306 monitors the air flow velocity in the first cylinder 101 in real time. When the air flow velocity suddenly increases, the air pressure sensor 307 is used to mark the air flow suction force at the corresponding time. Under double verification, it is beneficial to improve the accuracy of the marking of the ultimate tensile strength of the film-like plastic product.

[0044] See also Figure 1 , Figure 7 , Figure 8 and Fig.10 - Fig.11 A first bracket 4 and a second bracket 403 are fixedly installed in the box body 1 and are longitudinally inserted on both sides of the middle position of the first cylinder 101 and the second cylinder 103. A symmetrically arranged first conveying roller 401 is rotatably installed at the front and rear ends of the first bracket 4, and a left-right symmetrically arranged first ring belt 402 is rotatably sleeved between the two first conveying rollers 401. A symmetrically arranged second conveying roller 404 is rotatably installed at the front and rear ends of the second bracket 403. A left-right symmetrically arranged second ring belt 405 is rotatably sleeved between the two second conveying rollers 404, and the second ring belt 405 is arranged corresponding to the first ring belt 402 in upper and lower directions. A second servo motor 406 is fixedly installed on the outer side of the first bracket 4, and the second servo motor 406 is transmission-connected to one of the first conveying rollers 401. A second gear 407 is fixedly installed on one of the second conveying rollers 404. A third gear 408 meshing with the second gear 407 is rotatably installed on the first bracket 4, and the third gear 408 is transmission-connected to the first conveying roller 401.

[0045] When the device is in use, after the second servo motor 406 is powered on and started, it will drive the first conveying roller 401 fixedly connected to its driving shaft to rotate, thereby driving the first endless belt 402 set on both sides of the front and rear first conveying rollers 401 to rotate. During the rotation of the first conveying roller 401, the third gear 408 connected to it will be driven to rotate. With the meshing of the third gear 408 and the second gear 407, the second conveying roller 404 fixedly connected to the second gear 407 is driven to rotate in the opposite direction, so that the first endless belt 402 and the second endless belt set in contact with each other are rotated. 405 rotates relatively synchronously. When the staff is loading the film-like plastic products, they only need to flatten the film-like plastic products from the outside between the first ring belt 402 and the second ring belt 405. With the help of the synchronous relative rotation of the first ring belt 402 and the second ring belt 405, the film-like plastic products to be tested can be transported to the first ring plate 102 and the second ring plate 104 for clamping. The operation is convenient and the staff can be kept away from the first ring plate 102 and the second ring plate 104 that exert the squeezing and clamping effects, which is conducive to improving the operational safety of the device when it is actually used.

[0046] See also Figure 2 , Fig. 9 and Fig.12 The fourth gear 5 flush with the middle position of the first ring plate 102 and the second ring plate 104 is rotatably mounted on the inner end wall of the box body 1, a first rack rod 501 meshing with the fourth gear 5 is fixedly mounted on the first cylinder 101, a second rack rod 502 meshing with the fourth gear 5 is fixedly mounted on the second cylinder 103, and the second rack rod 502 and the first rack rod 501 are symmetrically arranged around the central axis. When the device is used, when the second cylinder 103 is driven up and down by the electric push rod, the second rack rod 502 fixedly connected thereto is driven to move synchronously. With the help of the second rack rod 502 and the fourth gear 5 The fourth gear 5 is meshed to drive the fourth gear 5 to rotate, and then the first rack rod 501 is driven to move in the opposite direction relative to the second rack rod 502 by means of the meshing of the fourth gear 5 with the first rack rod 501 on the other side. Since the first rack rod 501 and the first cylinder 101 are fixedly connected, the first cylinder 101 is driven to move synchronously, and finally the first cylinder 101 and the second cylinder 103 can synchronously approach each other or synchronously move away from each other, which is beneficial to improving the efficiency of the first ring plate 102 and the second ring plate 104 when opening and closing, and further beneficial to improving the efficiency of the staff when using the device to detect biodegradable plastic products.

[0047] The above are only the best implementation methods adopted by this application in combination with current actual needs, but the protection scope of this application is not limited to this.

Claims

1. A biodegradable plastic product detection device, comprising a box (1), characterized in that: A first cylinder (101) is installed at a middle position at the lower part of the box (1), and a first ring plate (102) is fixed around the top end of the first cylinder (101). A second cylinder (103) arranged just above the first cylinder (101) is slidably installed in the box (1), and a second ring plate (104) is fixed around the bottom end of the second cylinder (103). A vertically arranged electric push rod is fixedly installed in the box (1), and the telescopic end of the electric push rod is fixedly connected to the second cylinder (103). A pump (105) is installed on the outside of the box (1). A vertically arranged connecting pipe (106) is slidably penetrated through the top end of the second cylinder (103), and the connecting pipe (106) is fixedly connected to the air suction port of the pump (105). An air pressure sensor (307) arranged below the connecting pipe (106) is fixedly installed in the second cylinder (103).

2. A biodegradable plastic product detection device according to claim 1, characterized in that: A bearing plate (2) arranged above the second ring plate (104) is fixedly mounted around the lower end of the second cylinder (103), and an annular chamber communicating with the interior of the second cylinder (103) is arranged between the bearing plate (2) and the second ring plate (104), and a plurality of fan-shaped baffles (201) arranged in an encircling manner are rotatably mounted in the annular chamber, and a rotating disk (202) arranged on the bearing plate (2) is rotatably sleeved on the outer side of the lower end of the second cylinder (103), and a plurality of fan-shaped baffles (201) arranged in an encircling manner are arranged on the rotating disk (202). A slide groove (203), a vertically arranged cylindrical rod (204) is fixedly installed on the fan-shaped baffle (201), and the cylindrical rod (204) movably penetrates into the corresponding slide groove (203), a gear ring (205) coaxially arranged therewith is fixedly installed on the turntable (202), a first servo motor (206) is fixedly installed on the outer end wall of the second cylinder (103), and a first gear (207) meshing with the gear ring (205) is fixedly installed on the driving shaft of the first servo motor (206).

3. A biodegradable plastic product detection device according to claim 2, characterized in that: A sealing box (208) is fixedly sleeved on the outer side of the second ring plate (104); the bearing plate (2), the fan-shaped baffle (201), the rotating disk (202), the sliding groove (203), the cylindrical rod (204), the gear ring (205) and the first gear (207) are all arranged on the inner side of the sealing box (208); and the inside of the sealing box (208) is arranged as a closed structure that is only connected to the inside of the second cylinder (103).

4. The biodegradable plastic product detection device according to claim 1, characterized in that: A first convex ring (3) is fixedly mounted on the top of the first ring plate (102) and a second convex ring (301) is fixedly mounted on the bottom of the second ring plate (104), and the second convex ring (301) is arranged correspondingly to the first convex ring (3) up and down.

5. A biodegradable plastic product detection device according to claim 4, characterized in that: Two of the first convex ring (3) and the second convex ring (301) are provided, and the two first convex rings (3) and the two second convex rings (301) are provided on both sides. A first annular cavity (302) is formed between the two first convex rings (3) in cooperation with the first ring plate (102), and a second annular cavity (303) is formed between the two second convex rings (301) in cooperation with the second ring plate (104). A hose (304) communicating with the interior of the first annular cavity (302) is fixedly installed at the bottom of the first ring plate (102), and the hose (304) is fixedly communicated with the air suction port of the suction pump (105).

6. The biodegradable plastic product detection device according to claim 1, characterized in that: A filter element (305) is fixedly installed in the first cylinder (101), and the filter element (305) is composed of multiple overlapping filtering structures.

7. A biodegradable plastic product detection device according to claim 6, characterized in that: An air flow velocity sensor (306) arranged above the filter element (305) is fixedly installed in the first cylinder (101).

8. The biodegradable plastic product detection device according to claim 1, characterized in that: A first bracket (4) and a second bracket (403) are fixedly installed in the box body (1) and are longitudinally inserted on both sides of the middle position of the first cylinder (101) and the second cylinder (103); symmetrically arranged first conveying rollers (401) are rotatably installed at the front and rear ends of the first bracket (4); a first ring belt (402) symmetrically arranged on the left and right is rotatably sleeved between the two first conveying rollers (401); symmetrically arranged second conveying rollers (404) are rotatably installed at the front and rear ends of the second bracket (403); a second ring belt (405) symmetrically arranged on the left and right is rotatably sleeved between the two second conveying rollers (404); and the second ring belt (405) is arranged correspondingly to the first ring belt (402) in the upper and lower directions.

9. The biodegradable plastic product detection device according to claim 8, characterized in that: A second servo motor (406) is fixedly mounted on the outer side of the first bracket (4), and the second servo motor (406) is transmission-connected to one of the first conveying rollers (401); a second gear (407) is fixedly mounted on one of the second conveying rollers (404); a third gear (408) meshing with the second gear (407) is rotatably mounted on the first bracket (4), and the third gear (408) is transmission-connected to the first conveying roller (401).

10. The biodegradable plastic product detection device according to claim 9, characterized in that: A fourth gear (5) is rotatably mounted on the inner end wall of the box body (1) and is flush with the middle position of the first ring plate (102) and the second ring plate (104); a first rack rod (501) meshing with the fourth gear (5) is fixedly mounted on the first cylinder body (101); a second rack rod (502) meshing with the fourth gear (5) is fixedly mounted on the second cylinder body (103); and the second rack rod (502) and the first rack rod (501) are symmetrically arranged about their central axes.

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