Online detection sampling device for modified plastic production

Abstract

The invention relates to the technical field of detection and sampling, and discloses an online detection and sampling device for modified plastic production, which comprises a mounting rack, a passing bin arranged on the mounting rack, a feeding hopper arranged at the top of the passing bin, and a sampling bin arranged at the bottom of the passing bin, the sample discharging pipe is arranged at the bottom of the feeding hopper and penetrates through one side of the passing bin, the adjusting mechanism is arranged between the feeding hopper and the passing bin, the mixing mechanism and the sampling mechanism are arranged in the sampling bin, the feeding hopper is connected with the passing bin through the adjusting mechanism, and the mixing mechanism is located under an opening in the bottom of the passing bin. The sampling amount is adjusted by changing the size of a sampling opening, and samples poured in front, middle and back are uniformly mixed in a manner of beating, mixing and uniformly stirring the primarily sampled samples, so that the finally sampled samples can have higher uniformity and randomness, and the reference value of sample detection is improved.

Description

Technical Field

[0001] The invention relates to the technical field of detection and sampling, and in particular to an online detection and sampling device for modified plastic production. Background Art

[0002] The production of modified plastics is a process of improving the performance of plastics by adding various modifiers and additives to meet specific application requirements. With the advancement of science and technology and the improvement of environmental awareness, the granulation process of modified plastics in the production process is of great significance in terms of environmental protection, resource recovery, 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 particles after granulation production, which can ensure product quality, optimize the production process, meet market and regulatory requirements, and quickly discover and adjust when problems arise.

[0003] However, the prior art still has the following defects: when sampling, the existing particle sampling device usually pours a certain amount of plastic particles into the sampling hopper, and the plastic particles are dispersed into the sampling port during the process of falling from top to bottom for one-time sampling, and the size of the sampling port is often fixed. When sampling, the amount of plastic particles passing through the sampling port cannot be accurately controlled in real time, and there is no adjustable mechanism at the sampling port to adjust the sampling amount in real time. The sample obtained by this method is not accurately controlled in terms of the sampling amount, and it is easy to have too much or too little sampling; and The sampling method of pouring plastic particles from top to bottom results in inconsistencies in the amount of sampling before and after as the amount of plastic particles in the sampling bucket gradually decreases during the sampling process. The particles are not stirred and mixed before re-sampling, and the samples taken out will have different proportions due to the time of front, middle and back sampling. For example, the proportion of those poured first is larger and the proportion of those poured later is smaller, resulting in poor randomness and unevenness of the samples, poor randomness and representativeness of the samples, which affects the subsequent test data and is not conducive to the control of product quality in the later stage. Summary of the invention

[0004] In view of the problems in the prior art such as the amount of sampling and the lack of representativeness of the samples, an online detection sampling device for modified plastic production is proposed.

[0005] Its purpose is to adjust the sampling amount by changing the size of the sampling port, and to evenly mix the samples poured in the front, middle and back by mixing the preliminary samples, so that the final samples can be more uniform and random, thereby improving the reference value of sample detection.

[0006] The technical solution of the present invention is an online detection sampling device for modified plastic production, comprising a mounting frame, a passage bin arranged on the mounting frame, a feed hopper arranged on the top of the passage bin, a sampling bin arranged at the bottom of the passage bin, and the sampling bin is elliptical in shape, and a sample discharge pipe arranged at the bottom of the feed hopper and passing through one side of the passage bin, and also comprising an adjustment mechanism arranged between the feed hopper and the passage bin, and a mixing mechanism and a sampling mechanism arranged inside the sampling bin;

[0007] The feed hopper is connected to the passing bin through an adjusting mechanism, the mixing mechanism is located directly below the bottom opening of the passing bin, the sampling mechanism is located below the mixing mechanism and one end of the sampling mechanism extends to the bottom of the sampling bin, the mixing mechanism is used to evenly mix the particles that fall from the passing bin into the sampling bin, and the sampling mechanism is used to perform a final sampling of the evenly mixed particles;

[0008] The adjustment mechanism includes a toothed disc movably installed on the top of the passage bin, a handle arranged on one side of the toothed disc, sampling holes in a circular array opened at the bottom of the feed hopper, a limiting rod arranged near the top of the sampling holes, a driven wheel meshingly connected to the toothed disc, a rotating rod arranged 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 passes through the bottom wall of the sampling hole and is rotatably connected to the feed hopper; a driving assembly located on one side of the sampling bin is arranged on one side of the mounting frame, and the mixing mechanism and the sampling mechanism are transmission-connected through the driving assembly, and the driving assembly is used to drive the mixing mechanism and the sampling mechanism to rotate synchronously.

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

[0010] Furthermore, the mixing mechanism includes a slide groove opened on the inner wall of the sampling bin in an annular array, four first connecting slide rods correspondingly arranged in the slide groove, a material receiving tray arranged in the middle of the four first connecting slide rods, and the material receiving tray is elliptical and slightly smaller than the size of the sampling bin, a stirring plate arranged at the top of the material receiving tray, a telescopic rod arranged at the bottom of the stirring plate and passing through the middle of the material receiving tray, an upper turntable mounted on the telescopic rod, a lower turntable arranged at the bottom of the telescopic rod, a spring mounted on the telescopic rod, two ends of the spring are respectively fixedly connected to the top of the upper turntable and the bottom of the material receiving tray, two ends of the upper turntable are slidably installed in the slide groove through the second connecting slide rod, a fitting groove opened at the bottom of the upper turntable in an annular array, a fitting block arranged at the top of the lower turntable in an annular array and matched with the fitting groove, a first bevel gear arranged at the bottom end 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 arranged at the middle position of the top of the lower turntable, a movable groove symmetrically opened inside the telescopic outer cylinder, a support plate arranged in the movable groove, and a telescopic inner rod arranged at the top of the support plate, and the top of the telescopic inner rod is fixedly connected to the stirring plate.

[0012] Furthermore, an inclined material receiving plate is installed inside the sampling bin, an inclined bottom block is arranged at the bottom of the sampling bin, and the material receiving plate and the bottom block are provided with material delivery pipes respectively connecting the sample delivery pipe and the sampling bin on one side close to the sample delivery pipe, and a sampling port is opened at one end of the material receiving plate close to the material delivery pipe.

[0013] Furthermore, the sampling mechanism includes a sampling tube that passes through and is rotatably installed at the bottom of the sampling bin, a sampling slot box that is fixedly installed on the top of the sampling tube in a circular array, the sampling slot box is inclined and connected to the sampling tube at the bottom, a third bevel gear is arranged on the sampling tube and located outside the sampling bin, a material unloading piece is arranged at the bottom end of the sampling tube for facilitating unloading, an annular groove is arranged inside the bottom block, and a block is arranged on the sampling tube and adapted to the groove.

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

[0015] Furthermore, a shield is installed in the annular array above the bottom of the sampling holes in the hopper.

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

[0017] 1. The adjustment mechanism can accurately adjust the size of the sampling hole in real time, effectively and timely control the sampling amount of plastic particles, improve the accuracy of sampling, avoid excessive or insufficient sampling, and preliminarily avoid the problem of excessive sampling in the early and middle stages and less sampling in the later stages.

[0018] 2. The mixing mechanism can be set up to evenly mix the plastic particles entering the bottom of the passage bin, so that the plastic particles entering the front, back and middle stages can be evenly mixed together, avoiding the situation where the proportions of the samples are different in the front and back stages, improving the uniformity and representativeness of the samples, and playing an auxiliary role in the later sampling, thereby improving the accuracy of the later sampling.

[0019] 3. The sampling mechanism is set up to sample the plastic particles that have been stirred by the mixing mechanism in the final step. The continuously rotating sampling tube and the sampling slot box array installed on the top of the sampling tube can sample the plastic particles more randomly, thereby improving the reliability of the plastic particle samples. The plastic particles that are not sampled enter the sample arrangement tube through the receiving plate, bottom block and feed pipe at the bottom of the sampling bin for classification, and are classified with the samples, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the feeding hopper of the present invention;

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

[0026] Figure 7 It is a structural schematic diagram of the regulating mechanism of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure inside the sampling chamber of the present invention;

[0028] Fig. 9 It is a schematic diagram of the overall structure of the mixing mechanism of the present invention;

[0029] Fig.10 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0030] Fig.11 It is a schematic cross-sectional structure diagram of the telescopic rod of the present invention;

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the upper turntable and the lower turntable of the present invention;

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the sampling mechanism of the present invention;

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

[0034] In the figure:

[0035] 1. Mounting frame; 2. Passing bin; 3. Feed hopper; 31. Shield; 301. Sampling hole; 302. Limit rod; 4. Sampling bin; 41. Material receiving plate; 411. Bottom block; 42. Material delivery pipe; 401. Slide; 403. Sampling port; 5. Sample discharge pipe; 6. Adjustment mechanism; 61. Toothed disc; 62. Turning plate; 63. Driven wheel; 64. Turning rod; 65. Handle; 7. Mixing mechanism; 71. Material receiving disc; 711. First connecting slide rod; 72. Stirring plate; 73. Telescopic rod; 731. Telescopic inner rod; 732. Telescopic outer cylinder; 73 3. Abutment plate; 701. Movable groove; 74. Upper turntable; 741. Second connecting slide bar; 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. Block; 81. Sampling tube; 82. Sampling slot box; 83. Third bevel gear; 86. Unloading part; 9. Driving assembly; 91. Driving motor; 92. First connecting rod; 93. Second bevel gear; 94. Fourth bevel gear; 95. Second connecting rod; 96. Belt. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] Example 1, reference Figure 1-Figure 7, which is the first embodiment of the present invention, provides an online detection sampling device for modified plastic production, including a mounting frame 1, a passage bin 2 mounted on the mounting frame 1, a feed hopper 3 mounted on the top of the passage bin 2, a sampling bin 4 mounted at the bottom of the passage bin 2, and the sampling bin 4 is elliptical in shape, and a sample discharge pipe 5 mounted at the bottom of the feed hopper 3 and passing through one side of the passage bin 2, and also includes an adjustment mechanism 6 installed between the feed hopper 3 and the passage bin 2, and a mixing mechanism 7 and a sampling mechanism 8 installed inside the sampling bin 4; the feed hopper 3 is connected to the passage bin 2 through the adjustment mechanism 6, the mixing mechanism 7 is located directly below the bottom opening of the passage bin 2, the sampling mechanism 8 is located below the mixing mechanism 7 and one end of the sampling mechanism 8 extends to the bottom of the sampling bin 4, the mixing mechanism 7 is used to uniformly mix the particles that fall from the passage bin 2 into the sampling bin 4, and take The sampling mechanism 8 is used to take a final sample of the uniformly mixed particles; the adjusting mechanism 6 includes a toothed disc 61 movably mounted on the top of the passage bin 2, a handle 65 fixedly connected to one side of the toothed disc 61, a sampling hole 301 in a circular array at the bottom of the hopper 3, a limiting rod 302 fixedly connected near the top of the sampling hole 301, a driven wheel 63 meshingly connected to 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, and the bottom of the rotating rod 64 passes through the bottom wall of the sampling hole 301 and is rotatably connected to the hopper 3; a driving assembly 9 located on one side of the sampling bin 4 is installed on one side of the mounting frame 1, and the mixing mechanism 7 and the sampling mechanism 8 are transmission-connected through the driving assembly 9, and the driving assembly 9 is used to drive the mixing mechanism 7 and the sampling mechanism 8 to rotate synchronously.

[0038] Specifically, when sampling, the plastic particles are poured into the hopper 3, and the toothed disc 61 is driven to rotate by rotating the handle 65, and the rotating plate 62 is driven to rotate, so as to adjust the size of the gap between the sampling hole 301 and the rotating plate 62, and the plastic particles can fall from the gap into the passage bin 2 for sampling. By adjusting the size of the gap, the sampling amount can be controlled to adjust the first sampling amount. The plastic particles that have not been sampled enter the sample discharge tube 5 through the bottom, and the plastic particles obtained after the preliminary sampling are completed enter the passage bin 2, and the driving component 9 set at the bottom of one side is started to drive the mixing The mechanism 7 and the sampling mechanism 8 work, and the mixing mechanism 7 installed at the bottom of the passage bin 2 and the sampling bin 4 is used to mix the plastic particles evenly, so that the plastic particles poured in the front, middle and back are mixed together to avoid uneven sampling. After this process, the plastic particles fall onto the receiving plate 41, a part of them enters the sample discharge tube 5, and the other part is screened and finally sampled by the sampling mechanism 8, which can improve the uniformity of sampling and avoid uneven sampling due to the sampling order before and after the sampling process, thereby improving the uniformity and accuracy of plastic particle sampling.

[0039] Reference Figure 6 Both sides of the rotating plate 62 are set to be arc-shaped, and both 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, and 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 needed, thereby improving the sealing of the hopper 3 and preventing plastic particles or other fine substances from falling.

[0041] Reference Figure 5 A shield 31 is installed in a circular array above the bottom of the sampling hole 301 in the hopper 3.

[0042] Specifically, the shield 31 is used to shield 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, reference Figure 1-Figure 10 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the mixing mechanism 7 includes a chute 401 arranged in an annular array on the inner wall of the sampling chamber 4, four first connecting slide bars 711 correspondingly installed in the chute 401, a material receiving plate 71 fixed in the middle of the four first connecting slide bars 711, and the material receiving plate 71 is an ellipse slightly smaller than the sampling chamber 4, a stirring plate 72 movably installed on the top of the material receiving plate 71, a telescopic rod 73 fixed at the bottom of the stirring plate 72 and passing through the middle of the material receiving plate 71, an upper turntable 74 installed on the telescopic rod 73, and a fixed The lower turntable 75 at the bottom of the telescopic rod 73 is provided with a spring 76 sleeved on the telescopic rod 73, and the two ends of the spring 76 are respectively fixedly connected to the top of the upper turntable 74 and the bottom of the material receiving tray 71, and the two ends of the upper turntable 74 are slidably installed in the slide groove 401 through the second connecting slide rod 741, and the annular array is provided with a fitting groove 742 at the bottom of the upper turntable 74, and the annular array is installed on the top of the lower turntable 75 and the fitting block 751 that matches and is engaged with the fitting groove 742, the first bevel gear 77 fixed to the bottom end of the lower turntable 75, and the load-bearing rod 771 installed at the bottom of the first bevel gear 77.

[0044] When the second bevel gear 75 is driven by the driving assembly 9 to rotate, the lower turntable 75 is driven to rotate because the second bevel gear 93 is fixedly connected to the lower turntable 75. Since the engaging block 751 on the lower turntable 75 and the engaging groove 742 on the upper turntable 74 are adapted to be used, and the second connecting slide bar 741 slides up and down in the slide 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, so that the rotating lower turntable 75 drives the upper turntable 74 to move upward, pushing The spring 76 moves upward, thereby driving the receiving plate 71 to move upward. As the lower turntable 75 rotates continuously, the receiving plate 71 is able to continuously move back and forth up and down. When squeezed, the spring 76 can store energy and delay shaking, so that the plastic particles to be further screened on the top of the receiving plate 71 are continuously shaken, and the stirring plate 72 is used to stir the plastic particles, and the plastic particles that fall onto the receiving plate 71 are shaken and mixed, so that the mixed plastic particles fall, which is convenient for subsequent further screening and sampling, and improves the uniformity of later sampling.

[0045] Reference Figure 1-Figure 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 stop plate 733 installed in the movable groove 701, and a telescopic inner rod 731 movably installed on the top of the stop plate 733, and the top of the telescopic inner rod 731 is fixedly connected to the stirring plate 72.

[0046] Specifically, when the lower turntable 75 rotates, since the bottom of the telescopic outer cylinder 732 is fixedly connected to the lower turntable 75, the rotating lower turntable 75 drives the telescopic outer cylinder 732 to rotate. Because 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 telescopic extension of the telescopic inner rod 731, thereby driving the rotation of the stirring plate 72, that is, the material receiving plate 71 is synchronously stirred and mixed during the up and down shaking process, and the plastic particles are facilitated to fall, so that the plastic particles on the material receiving plate 71 are mixed and stirred evenly, so that the plastic particles falling from the front, middle and back are mixed, so that the samples are more uniform during the later sampling.

[0047] Reference Figure 1-Figure 14 An inclined material receiving plate 41 is installed inside the sampling bin 4, an inclined bottom block 411 is installed at the bottom of the sampling bin 4, and a material delivery pipe 42 respectively connecting the sample discharge pipe 5 and the sampling bin 4 is provided on the side of the material receiving plate 41 and the bottom block 411 close to the sample discharge pipe 5, and a sampling port 403 is opened at one end of the material receiving plate 41 close to the material delivery pipe 42.

[0048] The sample obtained by sampling can be transported to the next process for final sampling through the sampling port 403. The plastic particles that fall after sampling can be concentrated in the feeding pipe 42 through the inclined material receiving plate 41 and the bottom block 411, and the plastic particles can be transported to the sample discharge pipe 5 through the feeding pipe 42. The plastic particles are centrally processed after sampling so as to distinguish the plastic particles before and after sampling.

[0049] Reference Figure 1-Figure 13 The driving assembly 9 includes a driving motor 91 fixed at the middle position of the leg of the mounting frame 1, a first connecting rod 92 connected to one side of the output shaft of the driving motor 91, a second bevel gear 93 fixed to one side of the first connecting rod 92, and the second bevel gear 93 is meshed with the first bevel gear 77, a fourth bevel gear 94 installed 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 supporting frame fixed to the middle of the second connecting rod 95, and the top of the supporting frame is fixedly connected to the bottom of the sampling chamber 4, and the first connecting rod 92 and the second connecting rod 95 are connected through a belt 96.

[0050] Specifically, under the action of the belt 96, the first connecting rod 92 and the second connecting rod 95 can be driven to rotate by starting the driving motor 91, thereby driving the second bevel gear 93 and the fourth bevel gear 94 to rotate respectively, so as to achieve accurate sampling of the plastic particles while mixing the plastic particles, and improve the utilization rate of the driving motor 91. The rest of the structure is the same as that of the first embodiment.

[0051] Example 3, reference Figure 1-Figure 14 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the sampling mechanism 8 includes a sampling tube 81 that passes through and is rotatably installed at the bottom of the sampling chamber 4, a sampling slot box 82 that is fixedly installed on the top of the sampling tube 81 in an annular array, the sampling slot box 82 is inclined and the bottom end is 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 blanking piece 86 installed at the bottom end of the sampling tube 81 for easy blanking, an annular card slot 801 opened inside the bottom block 411, and a card block 811 fixed on the sampling tube 81 and adapted to the card slot 801.

[0052] Specifically, the third bevel gear 83 and the fixedly connected sampling tube 81 are driven to rotate by the driving motor 91, thereby driving the sampling slot box 82 to rotate, so as to achieve the last sampling of the plastic particles. The sampling slot boxes 82 that are continuously rotated and array-mounted can sample the front, middle and back plastic particles that fall, making the sampling more accurate and making the inspection report more referenceable. The rest of the structure is the same as that of Example 2.

[0053] In summary, the working principle of the present invention is as follows: when it is necessary to sample and test the plastic particles, the plastic particles are poured into the hopper 3, and the toothed disc 61 is driven to rotate by rotating the handle 65, and the toothed disc 61 drives several driven wheels 63 to rotate, and drives the rotating plate 62 to rotate in the sampling hole 301, so as to adjust the gap between the rotating plate 62 and the sampling hole 301, and most of the plastic particles flow into the sample discharge tube 5 through the bottom end, and some of the plastic particles enter the interior of the passing bin 2 through the sampling hole 301, and fall onto the receiving tray 71, the size of which is smaller than the inner size of the sampling bin 4. The first gear 72 is engaged with the first pinion 73 and the second gear 74 is engaged with the first pinion 73. When the first gear 72 is engaged with the first pinion 73, the second gear 74 is engaged with the first pinion 73. When the first gear 72 is engaged with the second pinion 73, the second gear 74 is engaged with the first pinion 73. 1 is constantly shaking up and down, and the rotating lower turntable 75 drives the telescopic outer cylinder 732 and the abutment plate 733 to rotate at the same time, so that the telescopic inner rod 731 drives the stirring plate 72 to rotate on the surface of the receiving plate 71, thereby realizing that the stirring plate 72 keeps moving up and down while the stirring plate 72 keeps rotating to mix and evenly stir the plastic particles on the receiving plate 71, and the mixed plastic particles fall from the receiving plate 71 and fall onto the receiving plate 41, and most of the plastic particles enter the sample discharge tube 5 through the feeding pipe 42 under the effect of the tilt, and some plastic particles go to the receiving plate 4 through the sampling port 403. 1 is sampled for the last time at the lower end. Under the action of the 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 on the top of the sampling tube 81 to rotate. The plastic particles dropped from the sampling port 403 are sampled for the last step through the rotating sampling slot box 82. The remaining plastic particles enter the sample arrangement tube 5 through the bottom block 411 at the bottom of the sampling bin 4 and the feed pipe 42 for concentration.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An online detection sampling device for modified plastic production, comprising a mounting frame (1), a passage chamber (2) arranged on the mounting frame (1), a feed hopper (3) arranged at the top of the passage chamber (2), a sampling chamber (4) arranged at the bottom of the passage chamber (2), and the sampling chamber (4) is elliptical in shape, and a sample discharge pipe (5) arranged at the bottom of the feed hopper (3) and passing through one side of the passage chamber (2), characterized in that: It also includes an adjusting mechanism (6) arranged between the feeding hopper (3) and the passing bin (2), and a mixing mechanism (7) and a sampling mechanism (8) arranged inside the sampling bin (4); The feed hopper (3) is connected to the passage bin (2) via an adjustment mechanism (6); the mixing mechanism (7) is located directly below the bottom opening of the passage bin (2); the sampling mechanism (8) is located below the mixing mechanism (7) and one end of the mixing mechanism extends to the bottom of the sampling bin (4); the mixing mechanism (7) is used to evenly mix the particles that fall from the passage bin (2) into the sampling bin (4); and the sampling mechanism (8) is used to perform a final sampling of the evenly mixed particles; The adjustment mechanism (6) comprises a toothed disc (61) movably mounted on the top of the passage bin (2), a handle (65) arranged on one side of the toothed disc (61), sampling holes (301) arranged in an annular array at the bottom of the feed hopper (3), a limiting rod (302) arranged near the top of the sampling holes (301), a driven wheel (63) meshingly connected to the toothed disc (61), a rotating rod (64) arranged at 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), wherein the bottom of the rotating rod (64) passes through the bottom wall of the sampling hole (301) and is rotatably connected to the feed hopper (3); A driving assembly (9) located on one side of the sampling chamber (4) is provided on one side of the mounting frame (1), and the mixing mechanism (7) and the sampling mechanism (8) are connected in transmission via the driving assembly (9), and the driving assembly (9) is used to drive the mixing mechanism (7) and the sampling mechanism (8) to rotate synchronously.

2. The online detection sampling device for modified plastic production according to claim 1, characterized in that: Both sides of the rotating plate (62) are arranged in an arc shape, and both 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, and the size of the rotating plate (62) is adapted to the size of the sampling hole (301).

3. The online detection sampling device for modified plastic production according to claim 2, characterized in that: The mixing mechanism (7) comprises a slide groove (401) formed in an annular array on the inner wall of the sampling chamber (4), four first connecting slide bars (711) correspondingly arranged in the slide groove (401), a material receiving plate (71) arranged in the middle of the four first connecting slide bars (711), and the material receiving plate (71) is elliptical and slightly smaller than the sampling chamber (4), a stirring plate (72) arranged on the top of the material receiving plate (71), a telescopic rod (73) arranged at the bottom of the stirring plate (72) and passing through the middle of the material receiving plate (71), an upper rotating plate (74) sleeved on the telescopic rod (73), and a lower rotating plate (75) arranged at the bottom of the telescopic rod (73). ), a spring (76) sleeved on the telescopic rod (73), the two ends of the spring (76) are respectively fixedly connected to the top of the upper turntable (74) and the bottom of the material receiving plate (71), 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 is opened at the bottom of the upper turntable (74) The matching groove (742), the matching block (751) of the ring array is arranged on the top of the lower turntable (75) and matches the matching groove (742) and is engaged, a first bevel gear (77) is arranged at the bottom of the lower turntable (75), and a load-bearing rod (771) is arranged at the bottom of the first bevel gear (77).

4. The online detection sampling device for modified plastic production according to claim 3 is characterized in that: The telescopic rod (73) comprises a telescopic outer cylinder (732) arranged at the middle position of the top of the lower rotating disk (75), a movable groove (701) symmetrically arranged inside the telescopic outer cylinder (732), a stop plate (733) arranged in the movable groove (701), and a telescopic inner rod (731) arranged on the top of the stop plate (733), and the top of the telescopic inner rod (731) is fixedly connected to the stirring plate (72).

5. The online detection sampling device for modified plastic production according to claim 4, characterized in that: An inclined material receiving plate (41) is installed inside the sampling chamber (4), an inclined bottom block (411) is arranged at the bottom of the sampling chamber (4), and a material delivery pipe (42) respectively connected to the sample delivery pipe (5) and the sampling chamber (4) is arranged on the side of the material receiving plate (41) and the bottom block (411) close to the sample delivery pipe (5), and a sampling port (403) is opened at one end of the material receiving plate (41) close to the delivery pipe (42).

6. The online detection sampling device for modified plastic production according to claim 1, characterized in that: The sampling mechanism (8) comprises a sampling tube (81) penetrating and rotatably mounted on the bottom of the sampling chamber (4), a sampling slot box (82) fixedly mounted on the top of the sampling tube (81) in an annular array, the sampling slot box (82) being inclined and connected to the sampling tube (81) at its bottom, a third bevel gear (83) arranged on the sampling tube (81) and located outside the sampling chamber (4), a material discharge member (86) arranged at the bottom end of the sampling tube (81) for facilitating material discharge, an annular clamping groove (801) arranged inside the bottom block (411), and a clamping block (811) arranged on the sampling tube (81) and matching the clamping groove (801).

7. 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 meshingly 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 supporting frame arranged at the middle of the second connecting rod (95), and the top of the supporting frame is fixedly connected to the bottom of the sampling chamber (4), and the first connecting rod (92) and the second connecting rod (95) are connected by a belt (96).

8. The online detection sampling device for modified plastic production according to claim 1, characterized in that: A shield (31) is installed in a circular array above the bottom of the sampling hole (301) in the feed hopper (3).

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