Automatic polyvinyl chloride resin sample collecting device

Abstract

The invention discloses an automatic polyvinyl chloride resin sample collecting device which comprises a box body and eight groups of sample collecting barrels, a bin door is arranged at one end of the front surface of the box body, a stirring type material guiding mechanism is arranged at the top of the box body, a sampling mechanism is arranged at the top of the outer side of the box body, a quantitative sample collecting mechanism is arranged in the box body, and the number of the sample collecting barrels is eight. Through the structural cooperation of the stirring type material guiding mechanism, a stirring system can be arranged in the material conveying structure, so that auxiliary stirring is carried out on conveyed and blanked resin, a large amount of resin is prevented from being bonded in a conveying channel to cause blockage, resin blanking is smoother, and meanwhile, under the rotation movement of an inclined scraper and a brush plate under a discharge valve, the material conveying structure is more stable in operation. The inner wall of the conical guide groove can be continuously scraped and cleaned, the situation that resin adheres to the inner wall of the discharging structure, and the difficulty and inconvenience of cleaning and maintaining of the structure are increased is prevented, meanwhile, under the control cooperation of the discharging valve, the conical guide groove can be actively closed, and discharging of the resin can be freely controlled.

Description

Technical Field

[0001] The invention relates to the technical field of polyvinyl chloride resin production equipment, in particular to an automatic sample collecting device for polyvinyl chloride resin. Background Art

[0002] There is an automatic sampling device on the production line of the polyvinyl chloride resin packaging workshop. The automatic sampling device can collect samples into a sample barrel at a set time interval. The automatic sampling device includes a box body, a turntable, a sample barrel, a drop pipe and a driving structure. A turntable rotates at the bottom of the box body, and a driving structure driving the turntable to rotate is fixed on the top of the box body. A drop pipe is connected to the top of the box body, and the sample barrel is placed on the turntable; when the turntable drives the sample barrel to rotate to the bottom of the drop pipe, the sample falls into the sample barrel through the drop pipe for collection;

[0003] The authorized patent number CN212031053U discloses an automatic sample collection device for polyvinyl chloride resin. The device mainly connects the drop pipe with the sample collection bucket through the automatic telescopic rod and the inner and outer sleeves. During the sample collection process, the sample enters the sample collection bucket through the drop pipe, which can solve the problems of sample leakage and dust flying, avoid sample waste and pollution of the production environment; the drop hopper cooperates with the end cover, and while realizing sample collection, the sample collection bucket can be closed after the sample collection is completed, further preventing dust from overflowing. However, when the device is actually used, the following defects still exist:

[0004] The above patent mainly connects the material dropping pipe and the sample collecting barrel to each other, so that the material can be stably collected and leakage and dust can be avoided. However, when the sample collecting structure collects polyvinyl chloride resin, it is not easy to quantify the resin collected by multiple sample collecting structures, which leads to uneven collection of the dropped resin and inability to control the collected resin. Moreover, when the sample collecting barrel is replaced, the resin will continue to drop, which will cause resin leakage, increasing the limitations and inconvenience of resin sampling. When the resin is conveyed and dropped, more resin is easy to stick together at the conveying structure to cause blockage, increasing the maintenance workflow of the staff and reducing the stability of the resin dropping and the efficiency of sample collection. In addition, when the resin is often dropped directly for collection before sampling, it is difficult to sample and observe the resin in the conveying state, and it is not easy to temporarily perform quality inspection on the collected samples of polyvinyl chloride resin. Summary of the invention

[0005] The object of the present invention is to provide an automatic sample collecting device for polyvinyl chloride resin to solve the related problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an automatic sample collecting device for polyvinyl chloride resin, comprising a box body and a sample collecting tube, a door is provided at one end of the front of the box body, a stirring material guiding mechanism is provided at the top of the box body, a sampling mechanism is provided at the top of the outer side of the box body, a quantitative sample collecting mechanism is provided inside the box body, and the sample collecting tube is provided in eight groups;

[0007] The stirring material guiding mechanism comprises a bracket, a conical material guiding trough, a material guiding cylinder, an electric push rod, a stirring rod, an oblique scraper, a discharge valve, a brush plate and a driver respectively. The bracket is mounted on the top of the box body, the inner side of the bracket is sleeved with a lifting and sliding material guiding cylinder, the bottom of the material guiding cylinder is connected with the conical material guiding trough, the bottom of the conical material guiding trough is provided with a discharge valve, an electric push rod is mounted on the top of one side of the inner side of the bracket, the output end of the electric push rod is connected with the conical material guiding trough, a shunt pipe is arranged on the top of the inner part of the material guiding cylinder, and a driver is mounted on the inner side of the shunt pipe, a stirring rod is arranged on the output end of the driver, the stirring rod extends to the inner side of the conical material guiding trough and is integrally installed with an oblique scraper, and a brush plate in contact with the inner wall of the conical material guiding trough is arranged on the outer side of the oblique scraper;

[0008] The quantitative sample collecting mechanism comprises a first gear, a rotating rod, a servo motor, a second gear, a turntable, a weighing device, a positioning groove, a spring seat and a clamping plate. The rotating rod is sleeved at the middle position of the bottom of the casing. A servo motor is provided on the side of the bottom of the casing close to the first gear. A second gear is provided at the output end of the servo motor. A first gear meshing with the second gear is provided on the outer side of the first gear. A turntable is installed on the top of the rotating rod. Eight groups of weighing devices are arranged at the edge of the top of the turntable, wherein the top of each group of weighing devices is connected with a positioning groove, and spring seats and clamping plates elastically connected to the spring seats are provided on both sides of the inner side of the positioning groove. The eight groups of sample collecting tubes are embedded in the positioning groove and clamped and positioned with the clamping plates.

[0009] Preferably, the sampling mechanism comprises a material receiving trough, a mounting trough, a slide groove, a slider, a sampling trough and a positioning piece respectively. The mounting trough is mounted on one side of the top of the interior of the box body, a slide groove is provided at one end of the inner side of the mounting trough, and a sliding piece for sliding fit is provided on the inner side of the slide groove, a material receiving trough is mounted on one end of the slider, a sampling trough is provided on the inner side of the material receiving trough, and positioning pieces for positioning fit with the material receiving trough are provided on both sides of the sampling trough.

[0010] Preferably, one end of the box is provided with an opening that is sealed with the bin door, and the opening is relatively matched with each group of sample collecting tubes, the box and the bracket are connected to each other, and a transparent window door is opened on the top of one end of the box, and the transparent window door is sealed with the installation groove.

[0011] Preferably, a telescopic guide rod is provided on the top of the inner side of the bracket away from the electric push rod, and the telescopic guide rod is connected to the conical material guide trough, and the inclined scraper is raised and lowered under the connection and cooperation of the telescopic guide rod and the electric push rod.

[0012] Preferably, a conical structure is provided at the bottom of the conical material guide trough, and conical grooves are provided at the tops of the eight groups of sample collecting tubes, and the conical grooves are snap-fitted with the conical material guide troughs.

[0013] Preferably, the warehouse door is made of a transparent window material, and one end of the eight groups of weighing devices is provided with a display light, and the display light rays pass through the transparent structure of the warehouse door to the outside of the box body.

[0014] Preferably, eight groups of the positioning grooves are arranged on the top of the weighing device to form a weighing structure, and eight groups of the sample collecting tubes are arranged on the inner side of the positioning grooves and are weighed in coordination.

[0015] Preferably, handles are provided on both sides of the eight groups of sample collecting tubes, and anti-slip grooves are provided on the outer sides of the handles.

[0016] Preferably, the material receiving trough is telescopically slidable and accommodated inside the mounting groove, and a limit block is provided on one side of the top of the material receiving trough to limit the mounting groove.

[0017] Preferably, the two groups of positioning members are respectively composed of a combination of a card slot and a card block, the card slots are provided on both sides of the inner side of the material receiving slot, and the card blocks are installed on both sides of the sampling slot and fit with the card slots.

[0018] Compared with the prior art, the present invention provides an automatic sample collection device for polyvinyl chloride resin, which has the following features:

[0019] Beneficial effects:

[0020] 1. The present invention can set a stirring system inside the feeding structure through the structural coordination of the stirring material guiding mechanism, so as to assist in stirring the resin of the conveying material, avoid a large amount of resin adhering to the conveying channel to cause blockage, and promote smoother resin material dropping. At the same time, the inclined scraper and the brush plate can continuously scrape and clean the inner wall of the conical material guiding trough under the rotation of the discharge valve to prevent the resin from adhering to the inner wall of the material dropping structure, which increases the difficulty and inconvenience of structural cleaning and maintenance. At the same time, under the control of the discharge valve, the conical material guiding trough can be actively closed to freely control the resin dropping, avoid resin leakage when the position of the sample collecting device is changed, and increase the functionality and sample collecting effect of the material feeding and dropping.

[0021] 2. The present invention utilizes the structural coordination of the quantitative sample collection mechanism to stably position each group of sample collection tubes inside the positioning groove, avoiding the positional deviation of the structure during the sample collection. At the same time, under the contact positioning of the conical guide groove and the conical structure of the sample collection tube, the stability of the sample collection tube collection work is further improved. The weighing coordination of the weighing device can be used to detect the weight of the polyvinyl chloride resin of the falling material, so that each group of the collection structure can be uniformly quantitatively collected. Uniform sample collection operation is carried out to provide operability and convenience for subsequent detection.

[0022] 3. The present invention can actively guide and expand the material receiving trough in the installation groove to receive the material relative to the material drop opening of the tapered material guide trough through the structural coordination of the sampling mechanism, thereby forming a temporary sampling structure, which is convenient for taking out the sampled resin, and actively sampling and quality inspection of the polyvinyl chloride resin that needs to be sampled, so as to prevent quality inspection problems from occurring in the resin and increase the quality inspection efficiency before the resin is sampled. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the present invention;

[0024] Figure 2 It is a front cross-sectional view of the present invention;

[0025] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0026] Figure 4 A top view of a turntable of the present invention;

[0027] Figure 5 It is a schematic cross-sectional view of the stirring material guiding mechanism of the present invention;

[0028] Figure 6 It is a schematic cross-sectional structural diagram of the sampling mechanism of the present invention.

[0029] In the figure: 1. box body; 2. bin door; 3. stirring material guiding mechanism; 31. bracket; 32. conical material guiding trough; 33. material guiding cylinder; 34. electric push rod; 35. stirring rod; 36. oblique scraper; 37. discharge valve; 38. brush plate; 39. driver; 4. sampling mechanism; 41. receiving trough; 42. mounting trough; 43. slide trough; 44. slide block; 45. sampling trough; 46. positioning member; 5. quantitative sample collecting mechanism; 51. first gear; 52. rotating rod; 53. servo motor; 54. second gear; 55. turntable; 56. weighing device; 57. positioning trough; 58. spring seat; 59. clamping plate; 6. sample collecting cylinder. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-6 The present invention provides a technical solution: an automatic sample collecting device for polyvinyl chloride resin, comprising a box body 1 and a sample collecting tube 6, a compartment door 2 is provided at one end of the front of the box body 1, a stirring material guiding mechanism 3 is provided at the top of the box body 1, a sampling mechanism 4 is provided at the top of the outer side of the box body 1, a quantitative sample collecting mechanism 5 is provided inside the box body 1, and a total of eight groups of sample collecting tubes 6 are provided;

[0032] The stirring material guiding mechanism 3 comprises a bracket 31, a conical material guiding trough 32, a material guiding cylinder 33, an electric push rod 34, a stirring rod 35, an oblique scraper 36, a discharge valve 37, a brush plate 38 and a driver 39. The bracket 31 is mounted on the top of the housing 1. The inner side of the bracket 31 is sleeved with a lifting and sliding material guiding cylinder 33. The bottom of the material guiding cylinder 33 is connected with the conical material guiding trough 32. The bottom of the conical material guiding trough 32 is provided with a discharge valve 37. The top of one side of the inner side of the bracket 31 is mounted with an electric push rod 34. The output end of the electric push rod 34 is connected with the conical material guiding trough 32. The top of the inner part of the material guiding cylinder 33 is provided with a shunt pipe and the inner side of the shunt pipe is provided with a driver 39. The output end of the driver 39 is provided with a stirring rod 35. The stirring rod 35 extends to the inner side of the conical material guiding trough 32 and is integrally installed with an oblique scraper 36. The outer side of the oblique scraper 36 is provided with a brush plate 38 that contacts the inner wall of the conical material guiding trough 32.

[0033] The quantitative sample collecting mechanism 5 comprises a first gear 51, a rotating rod 52, a servo motor 53, a second gear 54, a rotating disk 55, a weighing device 56, a positioning groove 57, a spring seat 58 and a clamping plate 59. The rotating rod 52 is sleeved at the middle position of the bottom of the box body 1. A servo motor 53 is provided on one side of the bottom of the box body 1 close to the first gear 51. The output end of the servo motor 53 is provided with a second gear 54. The outer side of the first gear 51 is provided with a first gear 51 meshing with the second gear 54. A rotating disk 55 is installed on the top of the rotating rod 52. Eight groups of weighing devices 56 are arranged at the edge of the top of the rotating disk 55, wherein the top of each group of weighing devices 56 is connected with a positioning groove 57, and spring seats 58 and clamping plates 59 elastically connected to the spring seats 58 are provided on both sides of the inner side of the positioning groove 57 respectively. The eight groups of sample collecting tubes 6 are embedded in the interior of the positioning groove 57 and clamped and positioned with the clamping plates 59.

[0034] As a preferred solution of this embodiment: the sampling mechanism 4 includes a material receiving groove 41, a mounting groove 42, a slide groove 43, a slider 44, a sampling groove 45 and a positioning piece 46. The mounting groove 42 is installed on one side of the top of the box body 1. A slide groove 43 is opened at one end of the inner side of the mounting groove 42, and a slider 44 is slidably provided on the inner side of the slide groove 43. A material receiving groove 41 is installed at one end of the slider 44. A sampling groove 45 is provided on the inner side of the material receiving groove 41. Positioning pieces 46 that are positioned and matched with the material receiving groove 41 are provided on both sides of the sampling groove 45.

[0035] As a preferred solution of this embodiment: one end of the box body 1 is provided with an opening that is sealed and adapted to the compartment door 2, and the opening is relatively matched with each group of sample collecting tubes 6, the box body 1 and the bracket 31 are connected to each other, and a transparent window door is opened on the top of one end of the box body 1, and the transparent window door is sealed and matched with the installation groove 42, so that the resin sampled in the installation groove 42 can be taken out for quality inspection by opening the transparent window door.

[0036] As a preferred solution of this embodiment: a telescopic guide rod is provided on the top of the inner side of the bracket 31 away from the electric push rod 34, and the telescopic guide rod is connected to the oblique scraper 36. The oblique scraper 36 is raised and lowered under the connection and cooperation of the telescopic guide rod and the electric push rod 34. The stability of the lifting and lowering adjustment of the conical material guide trough 32 can be improved through the connection and cooperation of the telescopic guide rod.

[0037] As a preferred solution of this embodiment: a conical structure is provided at the bottom of the conical material guide trough 32, and a conical groove is provided on the top of the eight groups of sample collecting barrels 6, and the conical groove is snap-fitted with the conical material guide trough 32. The conical groove provided on the top of the sample collecting barrel 6 is contacted and positioned with the conical structure on the bottom of the conical material guide trough 32, thereby improving the accuracy of the material collection work of the sample collecting barrel 6 and avoiding leakage of falling materials and splashing of dust.

[0038] As a preferred solution of this embodiment: the warehouse door 2 is made of transparent window material, and one end of the eight groups of weighing devices 56 is provided with a display light, and the display light rays pass through the transparent structure of the warehouse door 2 to the outside of the box body 1, so as to form a warning structure through the structural coordination of the display light, to warn of the specified weight of the aggregate resin, and to facilitate the automatic uniform resin sampling work of multiple groups of sample collection devices.

[0039] As a preferred solution of this embodiment: eight groups of positioning grooves 57 are arranged on the top of the weighing device 56 to form a weighing structure, and eight groups of sample collecting barrels 6 are arranged on the inner side of the positioning grooves 57 and weighed to facilitate quantification of the resin collected in each group of sample collecting barrels 6 by weighing, thereby improving the consistency of resin collection and the convenience of detection.

[0040] As a preferred solution of this embodiment: handles are provided on both sides of the eight groups of sample collecting tubes 6, and anti-slip grooves are provided on the outer sides of the handles, so as to increase the operability of supporting and placing and assembling the sample collecting tubes 6 and facilitate the transportation and movement of the sample collecting tubes 6.

[0041] As a preferred solution of this embodiment: the material receiving trough 41 is telescopically slidable and accommodated on the inner side of the mounting groove 42, and a limit block is provided on one side of the top of the material receiving trough 41 to limit the mounting groove 42, thereby increasing the limit function of the structure, and the material receiving trough 41 is hidden in the mounting groove 42 when the temporary sampling structure is not in use.

[0042] As a preferred solution of this embodiment: the two groups of positioning parts 46 are respectively composed of a card slot and a card block. Card slots are provided on both sides of the inner side of the material receiving slot 41, and card blocks are installed on both sides of the sampling slot 45 and fit with the card slots, so that the sampling slot 45 can be quickly disassembled and assembled through the positioning structure of the card block and the card slot.

[0043] Embodiment 1, as Figure 1-4 As shown, when collecting polyvinyl chloride samples, each group of sample collecting tubes 6 is first inserted into the inner side of the positioning groove 57. During this period, the sample collecting tubes 6 are automatically compressed under the elastic connection of the spring seat 58 through the contact with the two groups of clamps 59. When the sample collecting tubes 6 are completely inserted into the inner side of the positioning groove 57, the support of the sample collecting tubes 6 can be released, and the elastic restoring force of the spring seat 58 can be used to drive the clamps 59 to support and position the side walls of the sample collecting tubes 6, so that the sample collecting tubes 6 are stabilized under the positioning cooperation of the elastic supporting structure and the positioning groove 57, and the resin falling materials can be received and collected, thereby increasing the stability of the structural sample collection.

[0044] Embodiment 2, as Figure 1-2 and Figure 6 As shown, before collecting resin samples, the transparent window door on the end face of the box body 1 can be opened, and then the receiving slot 41 can be manually pulled out from the mounting slot 42, so that the sampling slot 45 inside the receiving slot 41 can maintain the same vertical plane with the conical guide slot 32, and receive part of the resin for sampling when the discharge valve 37 is opened. Then, by resetting the receiving slot 41, the sampling slot 45 is taken out of the box body 1 for temporary sampling, which is convenient for rapid quality inspection of the resin, thereby allowing high-precision multi-group sampling of the resin.

[0045] Working principle: In the automatic sample collection device for polyvinyl chloride resin;

[0046] When collecting samples of polyvinyl chloride resin, eight groups of sample collecting cylinders 6 with adjustable rotatable angles can be set, and the servo motor 53 is started to drive the second gear 54 to rotate and mesh with the first gear 51 structure, so that the first gear 51 drives the rotating rod 52 and the turntable 55 to rotate as a whole, so that the turntable 55 drives the eight groups of weighing devices 56 and the positioning grooves 57 as well as the sample collecting cylinders 6 in the positioning state to move. At this time, each group of sample collecting cylinders 6 can be rotated and adjusted, and each group of sample collecting cylinders 6 can be moved to the same vertical plane as the conical material guide groove 32. Then, the electric push rod 34 is started to drive the conical material guide groove 32 and the material guide cylinder 33 to rise and fall, so that the conical surface at the bottom of the conical material guide groove 32 and the discharge valve 37 extend to the inside of the sample collecting cylinder 6, so that the polyvinyl chloride transported by the material guide cylinder 33 and the conical material guide groove 32 can be controlled by the discharge valve 37. During the dropping of PVC resin, the driver 39 is started to drive the stirring rod 35 and the inclined scraper 36 to rotate, so that the stirring rod 35 stirs the conveyed resin, and the inclined scraper 36 drives the brush plate 38 to continuously scrape the inner wall of the conical guide groove 32, so as to assist the dropping of a large amount of resin, avoid the resin from being blocked and adhering to the inner wall of the structure, and promote the dropping efficiency of the material. During the dropping, the weight of the weighing device 56 is sensed, and when the sample collecting barrel 6 collects a specified amount of resin, the resin dropping can be stopped by controlling the opening and closing of the discharge valve 37, and then the turntable 55 is used to drive the position adjustment of the eight groups of sample collecting barrels 6, so as to continue the above steps to carry out the automatic sampling of PVC resin, and when the resin needs to be taken out after the sample is collected, each group of sample collecting barrels 6 can be dismantled and moved by unfolding the warehouse door 2, so as to carry out the handling and inspection of the collected resin.

[0047] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. Automatic sample collecting device for polyvinyl chloride resin, characterized in that: The invention comprises a box body (1) and a sample collecting tube (6), wherein a door (2) is provided at one end of the front of the box body (1), a stirring material guiding mechanism (3) is provided at the top of the box body (1), a sampling mechanism (4) is provided at the top of the outer side of the box body (1), a quantitative sample collecting mechanism (5) is provided inside the box body (1), and a total of eight groups of sample collecting tubes (6) are provided; The stirring material guiding mechanism (3) comprises a bracket (31), a conical material guiding trough (32), a material guiding cylinder (33), an electric push rod (34), a stirring rod (35), an oblique scraper (36), a material discharging valve (37), a brush plate (38) and a driver (39). The bracket (31) is mounted on the top of the box body (1). The inner side of the bracket (31) is sleeved with a lifting and sliding material guiding cylinder (33). The bottom of the material guiding cylinder (33) is connected to the conical material guiding trough (32). The bottom of the conical material guiding trough (32) is provided with a material discharging valve (37). (31) An electric push rod (34) is installed at the top of one side of the inner side, the output end of the electric push rod (34) is connected to the conical material guide groove (32), the top of the inner side of the material guide cylinder (33) is provided with a shunt pipe and the inner side of the shunt pipe is provided with a driver (39), the output end of the driver (39) is provided with a stirring rod (35), the stirring rod (35) extends to the inner side of the conical material guide groove (32) and is integrally installed with an oblique scraper (36), and the outer side of the oblique scraper (36) is provided with a brush plate (38) that contacts the inner wall of the conical material guide groove (32); The quantitative sample collecting mechanism (5) comprises a first gear (51), a rotating rod (52), a servo motor (53), a second gear (54), a rotating disk (55), a weighing device (56), a positioning groove (57), a spring seat (58) and a clamping plate (59). The rotating rod (52) is sleeved at the middle position of the bottom of the box body (1). The servo motor (53) is provided on one side of the bottom of the box body (1) close to the first gear (51). The output end of the servo motor (53) is provided with a second gear (54). The output end of the first gear (51) is provided with a second gear (54). A first gear (51) meshing with a second gear (54) is provided on the outer side, a turntable (55) is installed on the top of the rotating rod (52), and eight groups of weighing devices (56) are arranged at the edge of the top of the turntable (55), wherein the top of each group of weighing devices (56) is connected with a positioning groove (57), and the two sides of the inner side of the positioning groove (57) are respectively provided with a spring seat (58) and a clamping plate (59) elastically connected to the spring seat (58), and the eight groups of sample collecting tubes (6) are embedded in the interior of the positioning groove (57) and clamped and positioned with the clamping plate (59).

2. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: The sampling mechanism (4) comprises a material receiving groove (41), a mounting groove (42), a slide groove (43), a slider (44), a sampling groove (45) and a positioning piece (46), wherein the mounting groove (42) is mounted on one side of the top of the box body (1), a slide groove (43) is provided at one end of the inner side of the mounting groove (42), and a slider (44) is provided on the inner side of the slide groove (43) for sliding cooperation, a material receiving groove (41) is mounted on one end of the slider (44), a sampling groove (45) is provided on the inner side of the material receiving groove (41), and positioning pieces (46) for positioning cooperation with the material receiving groove (41) are provided on both sides of the sampling groove (45).

3. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: One end of the box body (1) is provided with an opening that is sealed and matched with the bin door (2), and the opening is matched with each group of sample collecting tubes (6). The box body (1) and the bracket (31) are connected to each other. A transparent window door is opened on the top of one end of the box body (1), and the transparent window door is sealed and matched with the installation groove (42).

4. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: A telescopic guide rod is provided on the top of the inner side of the bracket (31) away from the electric push rod (34), and the telescopic guide rod is connected to the conical material guide trough (32). The oblique scraper (36) is raised and lowered under the connection and cooperation between the telescopic guide rod and the electric push rod (34).

5. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: The bottom of the conical material guide groove (32) is provided with a conical structure, and the tops of the eight groups of sample collecting tubes (6) are provided with conical grooves, and the conical grooves are snap-fitted with the conical material guide groove (32).

6. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: The door (2) is made of a transparent window material. One end of each of the eight groups of weighing devices (56) is provided with a display light, and the display light rays pass through the transparent structure of the door (2) to the outside of the box body (1).

7. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: The eight groups of positioning grooves (57) are arranged on the top of the weighing device (56) to form a weighing structure, and the eight groups of sample collecting tubes (6) are arranged on the inner side of the positioning grooves (57) and are weighed and matched.

8. The automatic sample collecting device for polyvinyl chloride resin according to claim 1, characterized in that: Handles are provided on both sides of the eight groups of sample collecting tubes (6), and anti-slip grooves are provided on the outer sides of the handles.

9. The automatic sample collecting device for polyvinyl chloride resin according to claim 2, characterized in that: The material receiving groove (41) is telescopically slidable and accommodated inside the mounting groove (42), and a limiting block is provided on one side of the top of the material receiving groove (41) to limit the mounting groove (42).

10. The automatic sample collecting device for polyvinyl chloride resin according to claim 2, characterized in that: The two groups of positioning members (46) are respectively composed of a combination of a slot and a block. The two sides of the inner side of the material receiving slot (41) are provided with slots, and the two sides of the sampling slot (45) are provided with blocks that fit the slots.

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