An unsaturated polyester resin material sampling device

Abstract

The present invention relates to the technical field of sampling, and discloses a sampling device for unsaturated polyester resin materials, including a storage tank. An annular cover is fixedly installed on the storage tank. A rotating plate is rotatably installed on the top of the annular cover. A sealing plug is arranged on the rotating plate. It further includes: a stirring mechanism. The stirring mechanism includes an annular rotating plate rotatably installed in the storage tank. A plurality of stirring plates are respectively fixedly installed on the top and bottom of the annular rotating plate. A plurality of filter holes are respectively formed in the plurality of stirring plates. A plurality of cylinders are fixedly installed at the bottom of the rotating plate. A circular sampling box is arranged above the rotating plate. In the present invention, the connecting plate drives the circular sampling box to rotate, and the circular sampling box drives a plurality of sampling tubes to rotate. During the rotation process, the sampling tubes stir the unsaturated polyester resin in the storage tank. Stirring can improve the fluidity of the unsaturated polyester resin, effectively avoid the blockage of the polyester resin, and improve the smoothness of the polyester resin.

Description

Technical Field

[0001] The invention relates to the technical field of sampling equipment, in particular to an unsaturated polyester resin material sampling device. Background Art

[0002] Unsaturated polyester resin is generally a linear polymer compound with ester bonds and unsaturated double bonds formed by the condensation of unsaturated dibasic acid and diol or saturated dibasic acid and unsaturated diol. The raw materials of this type of resin are mostly toxic, flammable and explosive, which is obviously detrimental to environmental protection and the health of operators.

[0003] In the current resin production process, in order to determine the reaction endpoint, it is necessary to sample and observe or test the resin material during the production process. During the sampling process, the polyester resin is relatively thick and viscous, which is prone to blockage. Summary of the invention

[0004] The purpose of the present invention is to provide an unsaturated polyester resin material sampling device to solve the problem that in the current resin production process, in order to determine the reaction end point, the resin material needs to be sampled, observed or tested during the production process. During the sampling process, the polyester resin is relatively thick and viscous, and is prone to clogging.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an unsaturated polyester resin material sampling device, comprising a storage box, a ring cover is fixedly installed on the storage box, a rotating plate is rotatably installed on the top of the ring cover, and a sealing plug is arranged on the rotating plate, and further comprising:

[0007] A stirring mechanism, the stirring mechanism includes an annular rotating plate rotatably installed in a storage box, a plurality of stirring plates are fixedly installed on the top and bottom of the annular rotating plate, a plurality of filter holes are respectively opened on the plurality of stirring plates, a plurality of cylinders are fixedly installed on the bottom of the rotating plate, a circular sampling box is arranged above the rotating plate, a plurality of sampling tubes are fixedly installed on the bottom of the circular sampling box, the bottom ends of the plurality of sampling tubes respectively penetrate the plurality of cylinders, and the plurality of sampling tubes are respectively slidably connected to the plurality of cylinders.

[0008] Furthermore, a centrifugal bellows is rotatably installed on the top of the circular sampling box, and an intelligent sensor motor is fixedly installed on the top of the centrifugal bellows. A rotating shaft is fixedly installed on the output shaft of the intelligent sensor motor, and the rotating shaft passes through the centrifugal bellows. The bottom end of the rotating shaft extends into the circular sampling box and is rotatably connected to the circular sampling box, and a plurality of centrifugal fan blades are fixedly installed on the rotating shaft.

[0009] Further, a plurality of ventilation grooves are formed in the inner wall of the bottom of the centrifugal air box, and the bottom ends of the plurality of ventilation grooves all penetrate through the circular sampling box. A connecting plate is fixedly installed in the circular sampling box, the connecting plate is fixedly connected to the rotating shaft, and a plurality of ventilation holes are formed in the connecting plate.

[0010] Further, a fixing mechanism is arranged on the centrifugal air box. The fixing mechanism includes a U-shaped plate fixedly installed on the top of the centrifugal air box. The U-shaped plate is fixedly connected to the intelligent sensing motor. L-shaped plates are respectively fixedly installed on the outer walls of the left side and the right side of the U-shaped plate. Rectangular grooves are respectively formed on the sides of the two L-shaped plates close to each other. T-shaped round rods are respectively slidably installed on the inner walls of the two rectangular grooves far away from each other. Clamping grooves are respectively fixedly installed at the ends of the two T-shaped round rods close to each other. Two trapezoidal clamping blocks are formed on the outer wall of the annular cover. The ends of the two clamping grooves close to each other respectively extend into the two trapezoidal clamping blocks and are respectively slidably connected to the two clamping grooves. Fixing springs are respectively sleeved on the two T-shaped round rods. The ends of the two fixing springs close to each other are respectively fixedly connected to the two clamping grooves. The ends of the two fixing springs far away from each other are respectively fixedly connected to the two rectangular grooves.

[0011] Further, a moving mechanism is arranged in the circular sampling box. The moving mechanism includes a heating belt hole filter plate slidably installed in the circular sampling box. Two circular sliding rods are fixedly installed on the top of the heating belt hole filter plate. The tops of the two circular sliding rods both extend outside the circular sampling box and are both slidably connected to the circular sampling box. A moving ring is fixedly sleeved on the two circular sliding rods.

[0012] Further, a rectangular plate is fixedly installed at the bottom of the moving ring. The bottom ends of the plurality of rectangular plates are respectively hinged with moving rods. A plurality of rectangular sliding grooves are formed in the circular sampling box.

[0013] Further, closing blocks are respectively slidably installed in the plurality of rectangular sliding grooves. Strip-shaped plates are respectively fixedly installed at the ends of the plurality of closing blocks far away from each other. The ends of the plurality of strip-shaped plates far away from each other respectively extend outside the plurality of rectangular sliding grooves. The plurality of strip-shaped plates are respectively hinged with the plurality of moving rods.

[0014] Further, a plurality of sealing mechanisms are arranged on the rotating plate. A sealing groove is formed in the sealing mechanism. A sealing spring is fixedly installed in the sealing groove. A sealing trapezoidal block is fixedly installed at the right end of the sealing spring.

[0015] The present invention has the following beneficial effects:

[0016] (1) An unsaturated polyester resin material sampling device of the present invention. When the intelligent sensing motor is started, the intelligent sensing motor drives the rotation of the rotating shaft, the rotating shaft drives the rotation of several centrifugal fan blades, the centrifugal fan blades generate a suction force, and the suction force is sucked into the circular sampling box through the ventilation groove, and then sucked into the sampling tube through the ventilation holes and the holes on the heating belt perforated plate. The suction force sucks the unsaturated polyester resin from the storage box into the circular sampling box. During this process, the rotation of the rotating shaft drives the rotation of the connecting plate, the connecting plate drives the rotation of the circular sampling box, and the circular sampling box drives the rotation of several sampling tubes. During the rotation of the sampling tubes, the unsaturated polyester resin in the storage box is stirred, and the stirring improves the fluidity of the unsaturated polyester resin, which can effectively avoid the blockage of the polyester resin and improve the smoothness of the polyester resin;

[0017] (2) An unsaturated polyester resin material sampling device of the present invention. When in use, several sampling tubes are inserted into several cylinders, the sampling tubes drive the circular sampling box to descend, the circular sampling box drives the centrifugal air box to descend, the centrifugal air box drives the U-shaped plate to descend, the U-shaped plate drives the L-shaped plate to descend, and the L-shaped plate drives the two clamping grooves to descend. When the clamping grooves come into contact with the annular cover, they move away from each other. At this time, the two fixing springs undergo compressive deformation. When the clamping grooves move to the position of the trapezoidal clamping block, the clamping grooves are snapped into the trapezoidal clamping block under the elastic force of the fixing springs. Since the intelligent sensing motor and the U-shaped plate are fixed, the intelligent sensing motor is also fixed at this time, and the sampling device is fixed on the annular cover at this time;

[0018] (3) An unsaturated polyester resin material sampling device of the present invention. After the polyester resin enters the circular sampling box, the polyester resin drives the heating belt perforated plate to rise, the heating belt perforated plate drives the circular sliding rod to rise, the circular sliding rod drives the movable ring to rise, the movable ring drives the rectangular plate to rise, the rectangular plate drives the movable rod to rise, the movable rod drives the strip plate to move away from the circular sampling box, the strip plate drives the closing block to move. When the top of the movable ring touches the L-shaped plate, the corresponding closing block blocks the hole connecting the circular sampling box and the sampling tube. At this time, since the circular sampling box is in a sealed state, the load of the intelligent sensing motor increases, which may cause the current to exceed the normal range. At this time, the intelligent sensing motor will automatically shut down to avoid damage caused by the large load of the intelligent sensing motor, and at the same time avoid the polyester resin in the circular sampling box from flowing back into the storage box;

[0019] (4) For the unsaturated polyester resin material sampling device of the present invention, after extracting the polyester resin, pull the two T-shaped round rods apart, and the circular sampling box can be removed. The unsaturated polyester resin in the circular sampling box will be continuously heated by the heating perforated filter plate, effectively preventing the unsaturated polyester resin from cooling and solidifying. After the sampling tube leaves the rotating plate, the sealing trapezoidal block will be pushed by the elastic force of the sealing spring to move towards the center of the rotating plate until the sealing trapezoidal block contacts the inner wall of the sealing groove near the center of gravity of the rotating plate. At this time, the hole inserted by the sampling tube is closed by the sealing trapezoidal block, making the storage box in a sealed state, effectively preventing air from entering the storage box and causing the unsaturated polyester resin in the storage box to solidify, thus affecting the next sampling work.

[0020] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the front partial cross-sectional structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of A in it;

[0025] Figure 4 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of B in it;

[0027] Figure 6 For the present invention Figure 4 The enlarged schematic diagram of C in it;

[0028] Figure 7 It is a schematic diagram of a partial structure of the present invention;

[0029] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the present invention.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] In the figure: 1. Storage box; 2. Ring cover; 3. Rotating plate; 4. Sealing plug; 5. Stirring mechanism; 501. Ring rotating plate; 502. Stirring plate; 503. Filter hole; 504. Cylinder; 505. Circular sampling box; 506. Sampling tube; 507. Centrifugal air box; 508. Intelligent sensing motor; 509. Rotating shaft; 510. Centrifugal fan blade; 511. Ventilation groove; 512. Connecting plate; 513. Ventilation hole; 6. Fixing mechanism; 601. C-shaped plate; 602. L-shaped plate; 603. Rectangular groove; 604. T-shaped round rod; 605. Card slot; 606. Trapezoidal card block; 607. Fixing spring; 7. Moving mechanism; 701. Heating belt hole filter plate; 702. Circular slide bar; 703. Moving ring; 704. Rectangular plate; 705. Moving rod; 706. Rectangular chute; 707. Closing block; 708. Strip plate; 709. Suction groove; 8. Sealing mechanism; 801. Sealing groove; 802. Sealing spring; 803. Sealing trapezoidal block. Specific implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1 - Figure 8 As shown, the present invention is an unsaturated polyester resin material sampling device, including a storage box 1, a ring cover 2 fixedly installed on the storage box 1, a rotating plate 3 rotatably installed on the top of the ring cover 2, a sealing plug 4 arranged on the rotating plate 3, and further including:

[0034] A stirring mechanism 5, the stirring mechanism 5 includes a ring rotating plate 501 rotatably installed in the storage box 1, a plurality of stirring plates 502 are fixedly installed on the top and bottom of the ring rotating plate 501 respectively, a plurality of filter holes 503 are respectively opened on the plurality of stirring plates 502, a plurality of cylinders 504 are fixedly installed on the bottom of the rotating plate 3, a circular sampling box 505 is arranged above the rotating plate 3, a plurality of sampling tubes 506 are fixedly installed on the bottom of the circular sampling box 505, the bottom ends of the plurality of sampling tubes 506 respectively penetrate through the plurality of cylinders 504, and the plurality of sampling tubes 506 are respectively slidably connected with the plurality of cylinders 504.

[0035] As Figure 3As shown, a centrifugal air box 507 is rotatably installed at the top of the circular sampling box 505. An intelligent sensing motor 508 is fixedly installed at the top of the centrifugal air box 507. A rotating shaft 509 is fixedly installed on the output shaft of the intelligent sensing motor 508. The rotating shaft 509 penetrates through the centrifugal air box 507. The bottom end of the rotating shaft 509 extends into the circular sampling box 505 and is rotatably connected to the circular sampling box 505. A plurality of centrifugal fan blades 510 are fixedly installed on the rotating shaft 509.

[0036] The intelligent sensing motor 508 drives the rotating shaft 509 to rotate. The rotating shaft 509 drives a plurality of centrifugal fan blades 510 to rotate. The centrifugal fan blades 510 generate a suction force, and the suction force sucks into the circular sampling box 505 through the ventilation slots 511.

[0037] As Figure 3 shown, a plurality of ventilation slots 511 are opened on the bottom inner wall of the centrifugal air box 507. The bottom ends of the plurality of ventilation slots 511 all penetrate through the circular sampling box 505. A connecting plate 512 is fixedly installed in the circular sampling box 505. The connecting plate 512 is fixedly connected to the rotating shaft 509. A plurality of ventilation holes 513 are opened on the connecting plate 512.

[0038] It is sucked into the sampling tube 506 through the ventilation holes 513 and the holes on the heating belt hole filter plate 701. The suction force sucks the unsaturated polyester resin from the storage tank 1 into the circular sampling box 505.

[0039] As Figure 4 and Figure 5 shown, a fixing mechanism 6 is arranged on the centrifugal air box 507. The fixing mechanism 6 includes a U-shaped plate 601 fixedly installed at the top of the centrifugal air box 507. The U-shaped plate 601 is fixedly connected to the intelligent sensing motor 508. L-shaped plates 602 are respectively fixedly installed on the left outer wall and the right outer wall of the U-shaped plate 601. Rectangular slots 603 are respectively opened on one side of the two L-shaped plates 602 close to each other. T-shaped round rods 604 are respectively slidably installed on the inner walls of the two rectangular slots 603 away from each other. Clamping grooves 605 are respectively fixedly installed at one ends of the two T-shaped round rods 604 close to each other. Two trapezoidal clamping blocks 606 are opened on the outer wall of the annular cover 2. One ends of the two clamping grooves 605 close to each other respectively extend into the two trapezoidal clamping blocks 606 and are respectively slidably connected to the two clamping grooves 605. Fixing springs 607 are respectively sleeved on the two T-shaped round rods 604. One ends of the two fixing springs 607 close to each other are respectively fixedly connected to the two clamping grooves 605. One ends of the two fixing springs 607 away from each other are respectively fixedly connected to the two rectangular slots 603.

[0040] The centrifugal air box 507 drives the U-shaped plate 601 to descend. The U-shaped plate 601 drives the L-shaped plate 602 to descend. The L-shaped plate 602 drives the two card slots 605 to descend. When the card slots 605 touch the annular cover 2, they move away from each other. At this time, the two fixed springs 607 undergo compressive deformation. When the card slots 605 move to the position of the trapezoidal card block 606, the card slots 605 are snapped into the trapezoidal card block 606 under the elastic force of the fixed springs 607. Since the intelligent sensing motor 508 is fixed to the U-shaped plate 601, the intelligent sensing motor 508 is also fixed at this time.

[0041] As Figure 3 shown, an activity mechanism 7 is arranged in the circular sampling box 505. The activity mechanism 7 includes a heating perforated filter plate 701 slidably installed in the circular sampling box 505. Two circular sliding rods 702 are fixedly installed at the top of the heating perforated filter plate 701. The tops of the two circular sliding rods 702 both extend outside the circular sampling box 505 and are both slidably connected to the circular sampling box 505. An activity ring 703 is fixedly sleeved on the two circular sliding rods 702.

[0042] The polyester resin drives the heating perforated filter plate 701 to rise. The heating perforated filter plate 701 drives the circular sliding rods 702 to rise. The circular sliding rods 702 drive the activity ring 703 to rise.

[0043] As Figure 7 shown, a rectangular plate 704 is fixedly installed at the bottom of the activity ring 703. The bottom ends of several rectangular plates 704 are respectively hinged with activity rods 705. Several rectangular sliding grooves 706 are formed in the circular sampling box 505.

[0044] The activity ring 703 drives the rectangular plate 704 to rise. The rectangular plate 704 drives the activity rod 705 to rise. The activity rod 705 drives the strip plate 708 to move away from the circular sampling box 505.

[0045] As Figure 6 shown, several closing blocks 707 are respectively slidably installed in several rectangular sliding grooves 706. Strip plates 708 are respectively fixedly installed at the mutually remote ends of several closing blocks 707. The mutually remote ends of several strip plates 708 respectively extend outside several rectangular sliding grooves 706. Several strip plates 708 are respectively hinged with several activity rods 705.

[0046] The strip plate 708 drives the movement of the closing block 707. When the top of the movable ring 703 touches the L-shaped plate 602, the corresponding closing block 707 blocks the hole connecting the circular sampling box 505 and the sampling tube 506. At this time, since the circular sampling box 505 is in a sealed state, the load of the intelligent sensing motor 508 will increase, which may cause the current to exceed the normal range. At this time, the intelligent sensing motor 508 will automatically shut down to avoid damage caused by the large load of the intelligent sensing motor 508, and at the same time avoid the polyester resin in the circular sampling box 505 from flowing back into the storage tank 1.

[0047] As Figure 8 shown, a plurality of sealing mechanisms 8 are provided on the rotating plate 3. A sealing groove 801 is formed in the sealing mechanism 8. A sealing spring 802 is fixedly installed in the sealing groove 801. The right end of the sealing spring 802 is fixedly installed with a sealing trapezoidal block 803.

[0048] After the sampling tube 506 leaves the rotating plate 3, the sealing trapezoidal block 803 will be pushed by the elastic force of the sealing spring 802 to move towards the center of the rotating plate 3 until the sealing trapezoidal block 803 touches the inner wall of the sealing groove 801 near the center of gravity of the rotating plate 3. At this time, the sealing trapezoidal block 803 closes the hole into which the sampling tube 506 is inserted, making the storage tank 1 in a sealed state, effectively preventing air from entering the storage tank 1 and causing the unsaturated polyester resin in the storage tank 1 to solidify, thus affecting the next sampling work.

[0049] In use, several sampling tubes 506 are inserted into several cylinders 504. The sampling tubes 506 will drive the circular sampling box 505 to descend. The circular sampling box 505 will drive the centrifugal air box 507 to descend. The centrifugal air box 507 will drive the U-shaped plate 601 to descend. The U-shaped plate 601 drives the L-shaped plate 602 to descend. The L-shaped plate 602 will drive two clamping grooves 605 to descend. When the clamping grooves 605 come into contact with the annular cover 2, they will move away from each other. At this time, two fixing springs 607 undergo compressive deformation. When the clamping grooves 605 move to the position of the trapezoidal clamping block 606, the clamping grooves 605 will be snapped into the trapezoidal clamping block 606 under the elastic force of the fixing springs 607. Since the intelligent sensing motor 508 and the U-shaped plate 601 are fixed, the intelligent sensing motor 508 will also be fixed at this time. Start the intelligent sensing motor 508. The intelligent sensing motor 508 will drive the rotating shaft 509 to rotate. The rotating shaft 509 drives several centrifugal fan blades 510 to rotate. The centrifugal fan blades 510 will generate a suction force. The suction force will be sucked into the circular sampling box 505 through the ventilation groove 511, and then sucked into the sampling tube 506 through the ventilation hole 513 and the holes on the heating belt hole filter plate 701. The suction force will suck the unsaturated polyester resin from the storage tank 1 into the circular sampling box 505. During this process, the rotation of the rotating shaft 509 will drive the connecting plate 512 to rotate. The connecting plate 512 will drive the circular sampling box 505 to rotate. The circular sampling box 505 drives several sampling tubes 506 to rotate. The sampling tubes 506 will stir the unsaturated polyester resin in the storage tank 1 during rotation, and the stirring will improve the fluidity of the unsaturated polyester resin;

[0050] After the polyester resin enters the circular sampling box 505, the polyester resin will drive the heated perforated filter plate 701 to rise. The heated perforated filter plate 701 will drive the circular slide bar 702 to rise. The circular slide bar 702 will drive the movable ring 703 to rise. The movable ring 703 will drive the rectangular plate 704 to rise. The rectangular plate 704 will drive the movable rod 705 to rise. The movable rod 705 will drive the strip plate 708 to move away from the circular sampling box 505. The strip plate 708 will drive the closing block 707 to move. When the top of the movable ring 703 touches the L-shaped plate 602, the corresponding closing block 707 blocks the hole connecting the circular sampling box 505 and the sampling pipe 506. At this time, since the circular sampling box 505 is in a sealed state, the load of the intelligent sensing motor 508 will increase, which may cause the current to exceed the normal range. At this time, the intelligent sensing motor 508 will automatically shut down. After extracting the polyester resin, pull the two T-shaped round rods 604, and the circular sampling box 505 can be removed. The unsaturated polyester resin in the circular sampling box 505 will be continuously heated by the heated perforated filter plate 701, effectively preventing the unsaturated polyester resin from cooling and curing. After the sampling pipe 506 leaves the rotating plate 3, the sealing trapezoidal block 803 will be pushed by the elastic force of the sealing spring 802 to move towards the center of the rotating plate 3 until the sealing trapezoidal block 803 touches the inner wall of the sealing groove 801 near the center of gravity of the rotating plate 3. At this time, the sealing trapezoidal block 803 closes the hole inserted by the sampling pipe 506, making the storage box 1 in a sealed state.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An unsaturated polyester resin material sampling device, comprising a storage tank (1), a ring cover (2) is fixedly installed on the storage tank (1), a rotating plate (3) is rotatably installed on the top of the ring cover (2), and a sealing plug (4) is arranged on the rotating plate (3), characterized in that, It further includes: A stirring mechanism (5), the stirring mechanism (5) includes an annular rotating plate (501) rotatably installed in the storage tank (1), a plurality of stirring plates (502) are fixedly installed on the top and bottom of the annular rotating plate (501) respectively, a plurality of filter holes (503) are respectively formed in the plurality of stirring plates (502), a plurality of cylinders (504) are fixedly installed at the bottom of the rotating plate (3), a circular sampling box (505) is arranged above the rotating plate (3), a plurality of sampling tubes (506) are fixedly installed at the bottom of the circular sampling box (505), the bottom ends of the plurality of sampling tubes (506) respectively penetrate through the plurality of cylinders (504), and the plurality of sampling tubes (506) are respectively slidably connected with the plurality of cylinders (504); An activity mechanism (7) is arranged in the circular sampling box (505), the activity mechanism (7) includes a heating perforated filter plate (701) slidably installed in the circular sampling box (505), two circular sliding rods (702) are fixedly installed at the top of the heating perforated filter plate (701), the top ends of the two circular sliding rods (702) both extend outside the circular sampling box (505) and are both slidably connected with the circular sampling box (505), and an activity ring (703) is fixedly sleeved on the two circular sliding rods (702); A plurality of rectangular plates (704) are fixedly installed at the bottom of the activity ring (703), the bottom ends of the plurality of rectangular plates (704) are respectively hingedly installed with activity rods (705), and a plurality of rectangular sliding grooves (706) are formed in the circular sampling box (505); A plurality of closing blocks (707) are respectively slidably installed in the plurality of rectangular sliding grooves (706), strip-shaped plates (708) are fixedly installed at the mutually remote ends of the plurality of closing blocks (707), the mutually remote ends of the plurality of strip-shaped plates (708) respectively extend outside the plurality of rectangular sliding grooves (706), and the plurality of strip-shaped plates (708) are respectively hingedly connected with the plurality of activity rods (705); A plurality of sealing mechanisms (8) are arranged on the rotating plate (3), a sealing groove (801) is formed in the sealing mechanism (8), a sealing spring (802) is fixedly installed in the sealing groove (801), and a sealing trapezoidal block (803) is fixedly installed at the right end of the sealing spring (802).

2. The sampling device for unsaturated polyester resin materials according to claim 1, characterized in that: A centrifugal air box (507) is rotatably installed at the top of the circular sampling box (505), an intelligent sensing motor (508) is fixedly installed at the top of the centrifugal air box (507), a rotating shaft (509) is fixedly installed on the output shaft of the intelligent sensing motor (508), the rotating shaft (509) penetrates through the centrifugal air box (507), the bottom end of the rotating shaft (509) extends into the circular sampling box (505) and is rotatably connected with the circular sampling box (505), and a plurality of centrifugal fan blades (510) are fixedly installed on the rotating shaft (509).

3. The sampling device for unsaturated polyester resin materials according to claim 2, wherein: A plurality of ventilation grooves (511) are formed in the bottom inner wall of the centrifugal air box (507). The bottom ends of the plurality of ventilation grooves (511) penetrate through the circular sampling box (505). A connecting plate (512) is fixedly installed in the circular sampling box (505). The connecting plate (512) is fixedly connected to the rotating shaft (509). A plurality of ventilation holes (513) are formed in the connecting plate (512).

4. The sampling device for unsaturated polyester resin materials according to claim 3, characterized in that: A fixing mechanism (6) is arranged on the centrifugal air box (507). The fixing mechanism (6) includes a U-shaped plate (601) fixedly installed on the top of the centrifugal air box (507). The U-shaped plate (601) is fixedly connected to the intelligent sensing motor (508). L-shaped plates (602) are respectively fixedly installed on the left outer wall and the right outer wall of the U-shaped plate (601). Rectangular grooves (603) are respectively formed on one side of the two L-shaped plates (602) close to each other. T-shaped round rods (604) are respectively slidably installed on the inner walls of the two rectangular grooves (603) far away from each other. Clamping grooves (605) are respectively fixedly installed at one ends of the two T-shaped round rods (604) close to each other. Two trapezoidal clamping blocks (606) are formed on the outer wall of the annular cover (2). One ends of the two clamping grooves (605) close to each other respectively extend into the two trapezoidal clamping blocks (606) and are respectively slidably connected to the two clamping grooves (605). Fixing springs (607) are respectively sleeved on the two T-shaped round rods (604). One ends of the two fixing springs (607) close to each other are respectively fixedly connected to the two clamping grooves (605). One ends of the two fixing springs (607) far away from each other are respectively fixedly connected to the two rectangular grooves (603).

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