An on-line detection sampling device for modified plastic production

Abstract

The application relates to the field of sampling detection, and discloses an online detection sampling device for modified plastic production, which comprises a mounting frame, a passing warehouse arranged on the mounting frame, a feeding hopper arranged at the top of the passing warehouse, a sampling warehouse arranged at the bottom of the passing warehouse, the sampling warehouse being in an oval shape, a sampling pipe arranged at the bottom of the feeding hopper and penetrating through one side of the passing warehouse, an adjusting mechanism arranged between the feeding hopper and the passing warehouse, a mixing mechanism and a sampling mechanism arranged in the sampling warehouse, the feeding hopper being connected with the passing warehouse through the adjusting mechanism, and the mixing mechanism being located directly below the bottom opening of the passing warehouse. The sampling amount is adjusted by changing the size of the sampling port, the preliminary sampling sample is uniformly mixed by the mixing and stirring mode, the samples poured from the front, the middle and the back are uniformly mixed, the sample for the final sampling can be more uniform and random, and the reference value of the sample detection is improved.

Description

Technical Field

[0001] This invention relates to the field of testing and sampling technology, and in particular to an online testing and sampling device for modified plastics production. Background Technology

[0002] Modified plastics production is the process of improving the properties of plastics by adding various modifiers and additives to meet specific application requirements. With the advancement of technology and the increasing awareness of environmental protection, the granulation stage in the production process of modified plastics is of great significance for environmental protection, resource recycling, transportation and storage, processing convenience, and economic benefits. In order to accurately control product quality and evaluate product performance, it is usually necessary to sample and test plastic granules after granulation. This ensures product quality, optimizes the production process, meets market and regulatory requirements, and allows for rapid detection and adjustment when problems arise.

[0003] However, existing technologies still have the following drawbacks: Existing particle sampling devices typically involve pouring a certain amount of plastic particles into a sampling hopper. The particles are dispersed as they fall from top to bottom and are then sampled in a single pass through the sampling port. Furthermore, the size of the sampling port is often fixed, making it difficult to precisely control the amount of plastic particles passing through it in real time. There is no adjustable mechanism at the sampling port to regulate the sample volume in real time. This method of sampling results in insufficient precision in controlling the sample volume, easily leading to either too much or too little sample. The method of pouring plastic granules from top to bottom for sampling results in inconsistent sample volumes as the amount of granules in the sampling hopper gradually decreases. Without stirring and mixing the granules before sampling again, the proportion of the collected samples varies depending on the time of sampling (e.g., a larger proportion from the earlier granules and a smaller proportion from the later granules). This leads to poor sample randomness and uniformity, resulting in less representative and unreliable data. Consequently, it affects subsequent testing data and hinders quality control of the product. Summary of the Invention

[0004] In view of the problems of insufficient sampling quantity and unrepresentativeness of the samples in existing technologies, an online detection and sampling device for modified plastics production is proposed.

[0005] The purpose is to adjust the amount of sample taken by changing the size of the sampling port, and to mix the samples poured in at the beginning, middle and end by mixing the initial sample, so that the final sample can be more uniform and random, thereby improving the reference value of the sample test.

[0006] The technical solution of the present invention is an online detection and sampling device for modified plastic production, including a mounting frame, a transit chamber set on the mounting frame, a feed hopper set on the top of the transit chamber, a sampling chamber set at the bottom of the transit chamber, the sampling chamber being elliptical in shape, and a discharge pipe set at the bottom of the feed hopper and penetrating one side of the transit chamber, and also includes an adjustment mechanism set between the feed hopper and the transit chamber, and a mixing mechanism and a sampling mechanism set inside the sampling chamber;

[0007] The feed hopper is connected to the transit bin via an adjustment mechanism. The mixing mechanism is located directly below the bottom opening of the transit bin. The sampling mechanism is located below the mixing mechanism and extends one end to the bottom of the sampling bin. The mixing mechanism is used to uniformly mix the particles falling from the transit bin into the sampling bin. The sampling mechanism is used to take a final sample of the uniformly mixed particles.

[0008] The adjustment mechanism includes a geared disc movably mounted on the top of the transit bin, a handle on one side of the geared disc, a sampling hole in a ring array at the bottom of the feed hopper, a limiting rod located near the sampling hole, a driven wheel meshing with the geared disc, a rotating rod located at the bottom of the driven wheel and passing through the middle of the limiting rod, a rotating plate sleeved on the rotating rod, and the bottom of the rotating rod passing through the bottom wall of the sampling hole and rotatably connected to the feed hopper; a drive assembly located on one side of the mounting frame and on the side of the sampling bin is provided, and the mixing mechanism and the sampling mechanism are connected by the drive assembly, which is used to drive the mixing mechanism and the sampling mechanism to rotate synchronously.

[0009] Furthermore, both sides of the rotating plate are set in an arc shape, and the two sides of the sampling hole are in an arc shape that fits the rotation path of the rotating plate with the rotating rod as the center. The size of the rotating plate is adapted to the size of the sampling hole.

[0010] Furthermore, the mixing mechanism includes a ring array of grooves formed on the inner wall of the sampling chamber, four first connecting slide rods correspondingly arranged in the grooves, a material receiving plate arranged in the middle of the four first connecting slide rods, the material receiving plate being elliptical in shape slightly smaller than the size of the sampling chamber, a stirring plate arranged on top of the material receiving plate, a telescopic rod arranged at the bottom of the stirring plate and penetrating through the middle of the material receiving plate, an upper turntable sleeved on the telescopic rod, a lower turntable arranged at the bottom of the telescopic rod, a spring sleeved on the telescopic rod, the two ends of the spring being fixedly connected to the top of the upper turntable and the bottom of the material receiving plate respectively, the two ends of the upper turntable being slidably installed in the grooves through second connecting slide rods, a ring array of matching grooves formed at the bottom of the upper turntable, a ring array of matching blocks arranged on the top of the lower turntable and engaging with the matching grooves, a first bevel gear arranged at the bottom of the lower turntable, and a load-bearing rod arranged at the bottom of the first bevel gear.

[0011] Furthermore, the telescopic rod includes a telescopic outer cylinder located at the middle position of the top of the lower turntable, movable grooves symmetrically opened inside the telescopic outer cylinder, a backing plate located in the movable groove, and a telescopic inner rod located on the top of the backing plate, with the top of the telescopic inner rod fixedly connected to the stirring plate.

[0012] Furthermore, the sampling chamber is equipped with an inclined material support plate, and the bottom of the sampling chamber is provided with an inclined bottom block. Both the material support plate and the bottom block are provided with conveying pipes that connect the discharging pipe and the sampling chamber respectively on the side near the discharging pipe. A sampling port is opened at the end of the material support plate near the conveying pipe.

[0013] Furthermore, the sampling mechanism includes a sampling tube that passes through and is rotatably installed at the bottom of the sampling chamber, a sampling slot box that is fixedly installed in a ring array at the top of the sampling tube, the sampling slot box being inclined and having its bottom end connected to the sampling tube, a third bevel gear disposed on the sampling tube and located outside the sampling chamber, a feeding component disposed at the bottom end of the sampling tube for easy feeding, an annular slot disposed inside the bottom block, and a card block disposed on the sampling tube and adapted to the slot.

[0014] Furthermore, the drive assembly includes a drive motor located at the middle position of the mounting bracket leg, a first connecting rod located on one side of the output shaft of the drive motor, a second bevel gear located on one side of the first connecting rod and meshing with the first bevel gear, a fourth bevel gear located on one side of the bottom of the third bevel gear, a second connecting rod located on one side of the fourth bevel gear, a support frame located in the middle of the second connecting rod, and the top of the support frame being fixedly connected to the bottom of the sampling chamber. The first connecting rod and the second connecting rod are connected by belt drive.

[0015] Furthermore, a baffle is installed in a ring array above the bottom of the sampling hole inside the feed hopper.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The size of the sampling hole can be precisely adjusted in real time through the set adjustment mechanism, which can effectively and timely control the amount of plastic particles sampled, improve the sampling accuracy, avoid the situation of too much or too little sampling, and can initially avoid the problem of too much sampling in the early and middle stages and too little sampling in the later stages.

[0018] 2. The mixing mechanism can uniformly mix the plastic particles entering the bottom of the transit chamber, ensuring that the plastic particles entering from the beginning and middle stages are evenly mixed together. This avoids uneven proportions in the early and late stages of the sample, improves the uniformity and representativeness of the sample, and plays an auxiliary role in subsequent sampling, thereby improving the accuracy of later sampling.

[0019] 3. The sampling mechanism can perform the final sampling of plastic granules that have been stirred by the mixing mechanism. The continuously rotating sampling tube and the sampling slots arrayed at the top of the sampling tube can perform more random sampling of plastic granules, improving the reliability of the plastic granule samples. The plastic granules that are not sampled enter the discharge tube through the material receiving plate, bottom block and conveying pipe at the bottom of the sampling chamber for classification, thereby improving the detection accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the overall exploded structure of the present invention;

[0024] Figure 5 This is a cross-sectional structural diagram of the feed hopper of the present invention;

[0025] Figure 6 This is a cross-sectional view of the sampling hole and rotating plate of the present invention;

[0026] Figure 7 This is a schematic diagram of the adjustment mechanism of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the sampling chamber of the present invention;

[0028] Figure 9 This is a schematic diagram of the overall structure of the hybrid mechanism of the present invention;

[0029] Figure 10 For the present invention Figure 2 Enlarged structural diagram at point B;

[0030] Figure 11 This is a cross-sectional structural diagram of the telescopic rod of the present invention;

[0031] Figure 12 This is a three-dimensional structural diagram of the upper and lower turntables of the present invention;

[0032] Figure 13 This is a three-dimensional structural diagram of the sampling mechanism of the present invention;

[0033] Figure 14 For the present invention Figure 2 Enlarged structural diagram at point C.

[0034] In the picture:

[0035] 1. Mounting frame; 2. Passage bin; 3. Feed hopper; 31. Baffle; 301. Sampling hole; 302. Limiting rod; 4. Sampling bin; 41. Material receiving plate; 411. Base block; 42. Conveying pipe; 401. Slide groove; 403. Sampling port; 5. Discharge pipe; 6. Adjusting mechanism; 61. Gear disc; 62. Rotating plate; 63. Driven wheel; 64. Rotating rod; 65. Handle; 7. Mixing mechanism; 71. Material receiving plate; 711. First connecting slide rod; 72. Stirring plate; 73. Telescopic rod; 731. Telescopic inner rod; 732. Telescopic outer cylinder; 73 3. Support plate; 701. Movable groove; 74. Upper turntable; 741. Second connecting slide rod; 742. Fitting groove; 75. Lower turntable; 751. Fitting block; 76. Spring; 77. First bevel gear; 771. Load-bearing rod; 8. Sampling mechanism; 801. Slot; 811. Slot; 81. Sampling tube; 82. Sampling slot box; 83. Third bevel gear; 86. Unloading component; 9. Drive assembly; 91. Drive motor; 92. First connecting rod; 93. Second bevel gear; 94. Fourth bevel gear; 95. Second connecting rod; 96. Belt. Detailed Implementation

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Example 1, referring to Figures 1-7This invention provides an online detection and sampling device for modified plastic production, comprising a mounting frame 1, a transit chamber 2 mounted on the mounting frame 1, a feed hopper 3 mounted on top of the transit chamber 2, a sampling chamber 4 mounted on the bottom of the transit chamber 2 (the sampling chamber 4 being elliptical in shape), and a discharge pipe 5 mounted on the bottom of the feed hopper 3 and extending through one side of the transit chamber 2. It also includes an adjustment mechanism 6 installed between the feed hopper 3 and the transit chamber 2, and a mixing mechanism 7 and a sampling mechanism 8 installed inside the sampling chamber 4. The feed hopper 3 is connected to the transit chamber 2 via the adjustment mechanism 6. The mixing mechanism 7 is located directly below the bottom opening of the transit chamber 2, and the sampling mechanism 8 is located below the mixing mechanism 7 with one end extending below the sampling chamber 4. The mixing mechanism 7 is used to uniformly mix particles falling from the transit chamber 2 into the sampling chamber 4, and to sample... The sampling mechanism 8 is used to take a final sample of the uniformly mixed particles; the adjustment mechanism 6 includes a toothed disc 61 movably mounted on the top of the transit chamber 2, a handle 65 fixedly connected to one side of the toothed disc 61, sampling holes 301 in a ring array at the bottom of the feed hopper 3, a limiting rod 302 fixedly connected near the sampling hole 301, a driven wheel 63 meshing with the toothed disc 61, a rotating rod 64 fixedly connected to the bottom of the driven wheel 63 and passing through the middle of the limiting rod 302, and a rotating plate 62 sleeved on the rotating rod 64, with the bottom of the rotating rod 64 passing through the bottom wall of the sampling hole 301 and rotatably connected to the feed hopper 3; a drive assembly 9 located on one side of the sampling chamber 4 is mounted on one side of the mounting frame 1, and the mixing mechanism 7 and the sampling mechanism 8 are connected by the drive assembly 9, which is used to drive the mixing mechanism 7 and the sampling mechanism 8 to rotate synchronously.

[0038] Specifically, during sampling, plastic granules are poured into the feed hopper 3. Rotating the handle 65 drives the toothed disc 61 to rotate, which in turn drives the rotating plate 62 to rotate, thus adjusting the gap between the sampling hole 301 and the rotating plate 62. The plastic granules can then fall through the gap into the transit chamber 2 for sampling. Adjusting the gap size controls the sampling amount, allowing for adjustments to the initial sampling volume. Unsampled plastic granules enter the discharge pipe 5 through the bottom. The plastic granules obtained from the initial sampling enter the transit chamber 2. The drive assembly 9 located at the bottom of one side is then activated, driving the mixing process. The mechanism 7 and the sampling mechanism 8 work together, and the mixing mechanism 7 installed at the bottom of the passage chamber 2 and the sampling chamber 4 is used to mix the plastic particles evenly, so that the plastic particles poured in at the beginning, middle and end are mixed together, avoiding uneven sampling. After this process, the plastic particles fall onto the receiving plate 41. Some of them enter the discharge pipe 5, and the other part is screened and sampled by the sampling mechanism 8. This can improve the uniformity of sampling and avoid uneven sampling due to the sampling order, thereby improving the uniformity and accuracy of plastic particle sampling.

[0039] Reference Figure 6 Both sides of the rotating plate 62 are set in an arc shape, and the two sides of the sampling hole 301 are in an arc shape that fits the rotation path of the rotating plate 62 with the rotating rod 64 as the center. The size of the rotating plate 62 is adapted to the size of the sampling hole 301.

[0040] Specifically, when the driven wheel 63 drives the rotating plate 62 to rotate, since the two sides of the sampling hole 301 are in an arc shape that fits the rotation path of the rotating plate 62 with the rotating rod 64 as the center, the sampling hole 301 can be sealed and blocked when sampling is not required, thereby improving the sealing performance of the feed hopper 3 and preventing plastic particles or other small substances from falling out.

[0041] Reference Figure 5 Inside the feed hopper 3, a ring array of baffles 31 is installed above the bottom of the sampling hole 301.

[0042] Specifically, the shield 31 is used to cover the driven wheel 63 to prevent plastic particles from entering the sampling hole 301 and affecting the normal operation of the driven wheel 63.

[0043] Example 2, refer to Figures 1-10 This is the second embodiment of the present invention, which differs from the first embodiment in that: the mixing mechanism 7 includes a ring array of grooves 401 formed on the inner wall of the sampling chamber 4, four first connecting slide rods 711 correspondingly installed in the grooves 401, a receiving plate 71 fixed in the middle of the four first connecting slide rods 711, and the receiving plate 71 is elliptical in shape slightly smaller than the size of the sampling chamber 4, a stirring plate 72 movably installed on the top of the receiving plate 71, a telescopic rod 73 fixed at the bottom of the stirring plate 72 and passing through the middle of the receiving plate 71, and an upper turntable 74 installed on the telescopic rod 73. At the bottom of the telescopic rod 73, a lower turntable 75 is fitted with a spring 76. The two ends of the spring 76 are fixedly connected to the top of the upper turntable 74 and the bottom of the material receiving plate 71, respectively. The two ends of the upper turntable 74 are slidably installed in the slide groove 401 through the second connecting slide rod 741. A ring array of matching grooves 742 is opened at the bottom of the upper turntable 74. A ring array of matching blocks 751 is installed on the top of the lower turntable 75 and matched with the matching grooves 742. A first bevel gear 77 is fixed at the bottom of the lower turntable 75, and a load-bearing rod 771 is installed at the bottom of the first bevel gear 77.

[0044] Specifically, when the drive assembly 9 drives the first bevel gear 77 to rotate, the fixed connection between the second bevel gear 93 and the lower turntable 75 drives the lower turntable 75 to rotate as well. Since the engaging block 751 on the lower turntable 75 and the engaging groove 742 on the upper turntable 74 are compatible, and the second connecting slide rod 741 slides within the sliding groove 401, when the lower turntable 75 synchronously drives the engaging block 751 to rotate, the inclined surface of the engaging block 751 squeezes the engaging groove 742, causing the rotating lower turntable 75 to drive the upper turntable 74 to move upwards, pushing... Spring 76 moves upward, thereby driving the material receiving tray 71 to move upward. As the lower turntable 75 rotates continuously, the material receiving tray 71 moves up and down repeatedly. When the spring 76 is squeezed, it can store energy and delay the shaking, so that the plastic particles to be further screened on the top of the material receiving tray 71 shake continuously. Together with the stirring plate 72, the plastic particles are stirred and mixed. The plastic particles falling onto the material receiving tray 71 are shaken and mixed, so that the mixed plastic particles fall down, which is convenient for subsequent further screening and sampling, and improves the uniformity of the later sampling.

[0045] Reference Figures 1-11 The telescopic rod 73 includes a telescopic outer cylinder 732 fixed at the middle position of the top of the lower turntable 75, a movable groove 701 symmetrically opened inside the telescopic outer cylinder 732, a support plate 733 installed in the movable groove 701, and a telescopic inner rod 731 movably installed on the top of the support plate 733, and the top of the telescopic inner rod 731 is fixedly connected to the stirring plate 72.

[0046] Specifically, as the lower turntable 75 rotates, the bottom of the telescopic outer cylinder 732 is fixedly connected to the lower turntable 75. Therefore, the rotating lower turntable 75 drives the telescopic outer cylinder 732 to rotate. Since the telescopic inner rod 731 is telescopically connected to the telescopic outer cylinder 732 through the abutment plate 733 and the movable groove 701, when the telescopic outer cylinder 732 rotates, it can drive the telescopic inner rod 731 to rotate without affecting the extension and retraction of the telescopic inner rod 731. This drives the rotation of the stirring plate 72, thus realizing the simultaneous stirring and mixing of plastic particles during the up-and-down shaking of the material receiving tray 71. It also facilitates the falling of plastic particles and achieves the mixing and stirring of plastic particles on the material receiving tray 71. This mixes the plastic particles that fall from the front, middle and back, making the sample more uniform during the later sampling.

[0047] Reference Figures 1-14 An inclined material support plate 41 is installed inside the sampling chamber 4, and an inclined bottom block 411 is installed at the bottom of the sampling chamber 4. Both the material support plate 41 and the bottom block 411 are provided with a conveying pipe 42 that connects the sample discharge pipe 5 and the sampling chamber 4 respectively on the side near the sample discharge pipe 5. A sampling port 403 is opened at the end of the material support plate 41 near the conveying pipe 42.

[0048] The sample obtained through the sampling port 403 can be transported to the next process for final sampling. The inclined support plate 41 and the bottom block 411 can collect the plastic particles that fall after sampling to the conveying pipe 42, and then transport the plastic particles to the discharge pipe 5 through the conveying pipe 42 for centralized processing of the plastic particles after sampling, so as to distinguish the plastic particles before and after sampling.

[0049] Reference Figures 1-13 The drive assembly 9 includes a drive motor 91 fixed in the middle of the legs of the mounting bracket 1, a first connecting rod 92 connected to one side of the output shaft of the drive motor 91, a second bevel gear 93 fixed to one side of the first connecting rod 92 and meshing with the first bevel gear 77, a fourth bevel gear 94 mounted on one side of the bottom of the third bevel gear 83, a second connecting rod 95 fixed to one side of the fourth bevel gear 94, and a support frame fixed in the middle of the second connecting rod 95, with the top of the support frame fixedly connected to the bottom of the sampling chamber 4. The first connecting rod 92 and the second connecting rod 95 are connected by a belt 96.

[0050] Specifically, under the action of belt 96, the drive motor 91 can be started to simultaneously drive the first connecting rod 92 and the second connecting rod 95 to rotate, thereby driving the second bevel gear 93 and the fourth bevel gear 94 to rotate respectively. This achieves both mixing and stirring of the plastic particles and precise sampling of the plastic particles, while also improving the utilization rate of the drive motor 91. The remaining structure is the same as that of Embodiment 1.

[0051] Example 3, referring to Figures 1-14 This is the third embodiment of the present invention, which differs from the second embodiment in that: the sampling mechanism 8 includes a sampling tube 81 that is rotatably installed through and at the bottom of the sampling chamber 4, a sampling slot box 82 that is fixedly installed in a ring array at the top of the sampling tube 81, the sampling slot box 82 being inclined and having its bottom end connected to the sampling tube 81, a third bevel gear 83 installed on the sampling tube 81 and located outside the sampling chamber 4, a feeding component 86 installed at the bottom end of the sampling tube 81 for easy feeding, an annular slot 801 opened inside the bottom block 411, and a card block 811 fixed on the sampling tube 81 and adapted to the slot 801.

[0052] Specifically, the drive motor 91 drives the third bevel gear 83 and the fixedly connected sampling tube 81 to rotate, thereby driving the sampling box 82 to rotate, achieving the final sampling of the plastic particles. The continuously rotating and arrayed sampling box 82 can sample the falling plastic particles from the front, middle and rear, making the sampling more accurate and the test report more reliable. The rest of the structure is the same as that of Embodiment 2.

[0053] Based on embodiments 1-3, the working principle of this invention is as follows: When sampling and testing of plastic particles is required, the plastic particles are poured into the feed hopper 3. By rotating the handle 65, the toothed disc 61 is rotated, which in turn drives several driven wheels 63 to rotate, causing the rotating plate 62 to rotate within the sampling hole 301. This adjusts the gap between the rotating plate 62 and the sampling hole 301. Most of the plastic particles flow into the discharge pipe 5 through the bottom, while some plastic particles enter the interior of the transit bin 2 through the sampling hole 301 and fall onto the receiving tray 71. The size of the receiving tray 71 is smaller than the inner size of the sampling bin 4. At this time, the drive motor 91 starts, driving the first connecting rod 92 and the second bevel gear 93 to rotate. The second bevel gear 93 drives the first bevel gear 77 to rotate, thereby driving the lower turntable 75 to rotate. Since the engaging block 751 on the lower turntable 75 and the engaging groove 742 on the upper turntable 74 are compatible, when the lower turntable 75 drives the engaging block 751 to rotate, under the limiting action of the slide groove 401, the engaging block 751 pushes the upper turntable 74 to move upward. The upper turntable 74 compresses the spring 76 and pushes the material receiving plate 71 upward synchronously through the spring 76. At the same time, with the continuous rotation of the lower turntable 75, the material receiving plate 71 is moved upward. The continuous up-and-down shaking of plate 1, along with the rotation of the lower turntable 75, drives the telescopic outer cylinder 732 and the abutment plate 733 to rotate. This causes the telescopic inner rod 731 to drive the stirring plate 72 to rotate on the surface of the receiving plate 71. This results in the stirring plate 72 continuously moving up and down while simultaneously rotating, mixing and agitating the plastic granules on the receiving plate 71. The mixed plastic granules fall from the receiving plate 71 onto the receiving plate 41. Most of the plastic granules, under the influence of the inclination, enter the discharge pipe 5 through the conveying pipe 42, while some plastic granules pass through the sampling port 403 to the receiving plate 41. The lower end of 1 is sampled for the last time. Under the action of belt 96, the rotating drive motor 91 also drives the second connecting rod 95 to rotate, thereby driving the second connecting rod 95 and the fourth bevel gear 94 to rotate. Under the action of the fourth bevel gear 94 and the third bevel gear 83, the sampling tube 81 is driven to rotate, thereby driving the sampling slot box 82 at the top of the sampling tube 81 to rotate. The plastic particles falling from the sampling port 403 are sampled in the last step through the rotating sampling slot box 82. The remaining plastic particles enter the discharge pipe 5 through the bottom block 411 at the bottom of the sampling chamber 4 and the conveying pipe 42 for collection.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An on-line detection sampling device for modified plastic production, comprising a mounting frame (1), a passing warehouse (2) arranged on the mounting frame (1), an inlet hopper (3) arranged on the top of the passing warehouse (2), a sampling warehouse (4) arranged on the bottom of the passing warehouse (2), and the shape of the sampling warehouse (4) is oval, and a sampling discharge pipe (5) arranged at the bottom of the inlet hopper (3) and penetrating through one side of the passing warehouse (2), characterized in that: The adjusting mechanism (6) is arranged between the feeding hopper (3) and the passing bin (2), and the mixing mechanism (7) and the sampling mechanism (8) are arranged in the sampling bin (4); ​ The feeding hopper (3) is connected with the passing bin (2) through the adjusting mechanism (6), the mixing mechanism (7) is located directly below the bottom opening of the passing bin (2), the sampling mechanism (8) is located below the mixing mechanism (7) and extends to below the sampling bin (4) at one end, the mixing mechanism (7) is used for uniformly mixing the particles falling from the passing bin (2) into the sampling bin (4), and the sampling mechanism (8) is used for sampling the uniformly mixed particles for the last time; The adjusting mechanism (6) comprises a toothed disc (61) movably arranged on the top of the passing bin (2), a handle (65) arranged on one side of the toothed disc (61), a sampling hole (301) in the form of an annular array arranged at the bottom of the feeding hopper (3), a limiting rod (302) arranged above the sampling hole (301), a driven wheel (63) engaged with the toothed disc (61), a rotating rod (64) arranged at the bottom of the driven wheel (63) and penetrating through the middle part of the limiting rod (302), and a rotating plate (62) sleeved on the rotating rod (64), and the bottom of the rotating rod (64) penetrates through the bottom wall of the sampling hole (301) and is rotationally connected with the feeding hopper (3); One side of the mounting frame (1) is provided with a driving assembly (9) located on one side of the sampling bin (4), and the mixing mechanism (7) and the sampling mechanism (8) are drivingly connected through the driving assembly (9), and the driving assembly (9) is used for driving the mixing mechanism (7) and the sampling mechanism (8) to rotate synchronously; Both sides of the rotating plate (62) are in the form of arc shape, both sides of the sampling hole (301) are in the form of arc shape matched with the rotating path of the rotating plate (62) with the rotating rod (64) as the center, and the size of the rotating plate (62) is matched with the size of the sampling hole (301); The mixing mechanism (7) comprises a chute (401) of an annular array opened on the inner wall of the sampling bin (4), four first connecting slide rods (711) correspondingly arranged in the chute (401), a material receiving disc (71) arranged in the middle of the four first connecting slide rods (711), wherein the material receiving disc (71) is in an oval shape slightly smaller than the size of the sampling bin (4), a stirring plate (72) arranged on the top of the material receiving disc (71), an extension rod (73) arranged on the bottom of the stirring plate (72) and penetrating through the middle of the material receiving disc (71), an upper turntable (74) sleeved on the extension rod (73), a lower turntable (75) arranged at the bottom of the extension rod (73), a spring (76) sleeved on the extension rod (73), both ends of the spring (76) being fixedly connected with the top of the upper turntable (74) and the bottom of the material receiving disc (71), both ends of the upper turntable (74) being slidingly installed in the chute (401) through a second connecting slide rod (741), a matching groove (742) of an annular array being opened at the bottom of the upper turntable (74), a matching block (751) of an annular array being arranged on the top of the lower turntable (75) and matched with the matching groove (742), a first bevel gear (77) arranged at the bottom end of the lower turntable (75), and a bearing rod (771) arranged at the bottom of the first bevel gear (77).

2. The online detection sampling device for modified plastic production according to claim 1, characterized in that: The extension rod (73) comprises an extension outer cylinder (732) arranged at the middle position of the top of the lower turntable (75), a movable groove (701) symmetrically opened in the inside of the extension outer cylinder (732), a stop plate (733) arranged in the movable groove (701), and an extension inner rod (731) arranged at the top of the stop plate (733), wherein the top of the extension inner rod (731) is fixedly connected with the stirring plate (72).

3. The online detection sampling device for modified plastic production according to claim 2, characterized in that: The inside of the sampling bin (4) is mounted with an inclined material receiving plate (41), the bottom of the sampling bin (4) is provided with an inclined bottom block (411), and the side of the material receiving plate (41) and the bottom block (411) close to the sample discharging pipe (5) is provided with a material conveying pipe (42) respectively communicating with the sample discharging pipe (5) and the sampling bin (4), and the end of the material receiving plate (41) close to the material conveying pipe (42) is provided with a sampling port (403).

4. The online detection sampling device for modified plastic production according to claim 1, characterized in that: The sampling mechanism (8) comprises a sampling pipe (81) penetratingly and rotatably mounted at the bottom of the sampling bin (4), a sampling groove box (82) of an annular array fixedly mounted on the top of the sampling pipe (81), the sampling groove box (82) being in an inclined shape and communicating with the sampling pipe (81) at the bottom end, a third bevel gear (83) arranged on the sampling pipe (81) and located outside the sampling bin (4), a discharging piece (86) arranged at the bottom end of the sampling pipe (81) for facilitating discharging, an annular clamping groove (801) arranged in the inside of the bottom block (411), and a clamping block (811) arranged on the sampling pipe (81) and matched with the clamping groove (801).

5. The online detection sampling device for modified plastic production according to claim 1, characterized in that: The driving assembly (9) comprises a driving motor (91) arranged at the middle position of the leg of the mounting frame (1), a first connecting rod (92) arranged at one side of the output shaft of the driving motor (91), a second bevel gear (93) arranged at one side of the first connecting rod (92), and the second bevel gear (93) is meshed and connected with the first bevel gear (77), a fourth bevel gear (94) arranged at one side of the bottom of the third bevel gear (83), a second connecting rod (95) arranged at one side of the fourth bevel gear (94), and a support frame arranged at the middle portion of the second connecting rod (95), and the top of the support frame is fixedly connected with the bottom of the sampling bin (4), and the first connecting rod (92) and the second connecting rod (95) are drivingly connected through a belt (96).

6. The online detection sampling device for modified plastic production according to claim 1, characterized in that: The upper annular array of the inlet hopper (3) is arranged above the bottom of the sampling hole (301) and is provided with a cover (31).

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