A polypropylene mixing tank

Abstract

The present invention relates to the technical field of mixing and stirring, and specifically to a polypropylene mixing and stirring tank, comprising: a bracket, a top cover is slidably mounted on the upper end of the bracket, a tank body is fixedly mounted on the inner bottom end of the bracket, the top cover is airtightly slidably connected to the upper end of the tank body, a material discharge cover is slidably mounted on the lower end surface of the bracket, and a material discharge barrel is fixedly mounted on the upper end surface of the top cover. The present invention sets a detection element, and in the process of stirring the upper, middle and lower layers of the material in the tank body by the stirring blade, the viscosity of the material will hinder the rotation of the stirring blade, thereby driving the stirring blade and the rotating ring to rotate on the connecting ring, and in the process of the rotating ring rotating, the rotating ring will drive the detection rod to rotate at the detection end of the detection element, so that the detection element detects that when the transmission rod is rotating, the rotating ring rotates on the connecting ring due to the excessive viscosity of the material, thereby determining that the viscosity of the material is too high.

Description

Technical Field

[0001] The invention relates to the technical field of mixing and stirring, and in particular to a polypropylene mixing and stirring tank. Background Art

[0002] A mixing tank is an industrial equipment specially used for stirring, mixing and evenly dispersing various materials. Its main function is to ensure that the materials are fully mixed during the mixing process of liquids, solids or gases to achieve a certain reaction effect or processing requirement.

[0003] When polypropylene is mixed with raw materials, the problem of excessive viscosity is often encountered. As a high molecular polymer, polypropylene has a long molecular chain and is both flexible and sticky. During the stirring and heating melting process, the long molecular chain causes the viscosity of the material to increase, especially in a high temperature and high shear force environment. The mutual entanglement, friction and interchain interaction of polypropylene molecular chains are intensified, the fluidity is reduced, and the viscosity is significantly increased. If polypropylene is mixed with other raw materials in a molten state, the viscosity of the melt itself is relatively high. Moreover, if the melting temperature is not well controlled, the melt viscosity of polypropylene will increase abnormally, making the mixing difficulty greatly increased. During the stirring process, materials with high viscosity and poor fluidity are extremely difficult to flow in the tank, which requires the stirring device to exert greater force to promote the flow of materials, resulting in a sharp increase in stirring resistance and a significant reduction in stirring efficiency. It often takes longer to complete the mixing process. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a polypropylene mixing and stirring tank, which can effectively solve the problem of excessive viscosity when polypropylene is mixed and stirred with raw materials in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a polypropylene mixing and stirring tank, comprising:

[0007] A bracket, a top cover is slidably mounted on the upper end of the bracket, a tank body is fixedly mounted on the inner bottom end of the bracket, the top cover is airtightly slidably connected to the upper end of the tank body, a material discharge cover is slidably mounted on the lower end surface of the bracket, a material discharge barrel is fixedly mounted on the upper end surface of the top cover, a sealing cover plate is airtightly slidably mounted on the upper end of the material discharge barrel, and the material discharge barrel passes through the bracket and is connected to the tank body;

[0008] A stirring assembly, the stirring assembly comprising a plurality of rotating rings evenly arranged on the inner wall of the tank body, a plurality of stirring blades evenly installed on the outer wall of the rotating ring, a detection element arranged in the rotating ring, the detection element being electrically connected to a controller, a detection rod being rotatably installed on the detection end of the detection element, and the detection rod being fixed to the inner wall of the rotating ring;

[0009] A lifting drive assembly, wherein the lifting drive assembly comprises a plurality of inner stirring rods equidistantly arranged on the inner wall of the tank body, and during the stirring process of the stirring blades, the inner stirring rods cooperate with the stirring blades to rotate on the inner wall of the tank body to stir the polypropylene and the raw material;

[0010] Detection and exhaust assembly, used to exhaust air in the tank during stirring and detect bubble height during stirring to add defoaming agent.

[0011] Preferably, two support frames are symmetrically installed on the upper end surface of the top cover, and a first U-shaped frame is slidably installed on the outer sides of the two support frames, a transmission rod is rotatably installed on the inner top end of the first U-shaped frame, a rotating drive member is fixedly installed on the upper end of the first U-shaped frame, the output end of the rotating drive member passes through the first U-shaped frame and is fixedly connected to the transmission rod, the lower end of the transmission rod passes through the top cover and extends into the tank body, a plurality of joints are equidistantly installed in the transmission rod, the lower end surface of the joint is rotatably connected to the rotating ring, a connecting ring is fixedly installed on the lower end surface and the middle position of the joint, the inner wall of the connecting ring is fixedly connected to the detection element, a coil spring is fixedly installed between the connecting ring and the rotating ring, a screw head is installed on the inner thread of the joint, an extrusion block is fixedly installed on the lower end of the screw head, and the extrusion block is slidably connected to the rotating ring.

[0012] Preferably, a plurality of heating elements are equidistantly installed on the outer wall of the tank body, and the heating elements are electrically connected to the controller; a plurality of rotating rings are equidistantly installed in the tank body, and the inner wall of the rotating ring is fixedly connected to the inner stirring rod; a sealing ring sleeve is fixedly installed on the outer wall of the rotating ring, and the sealing ring sleeve is airtightly slidably connected to the outer wall of the tank body, and the sealing ring sleeve and the rotating ring are driven; a second U-shaped frame is fixedly installed on the upper end of the top cover at a position away from the unloading barrel, and a lifting drive member is fixedly installed on the upper end of the second U-shaped frame, and the lifting drive member is electrically connected to the controller, the telescopic end of the lifting drive member passes through the second U-shaped frame and extends into the interior thereof, and the telescopic end of the lifting drive member is fixedly connected to the transmission rod via a connecting plate.

[0013] Preferably, a first slide groove is provided at an upper position of an outer wall of the transmission rod, a lifting ring is slidably installed in the first slide groove, a rotating short shaft is rotatably installed in the top cover and at a position away from the tank body, the rotating short shaft is drivingly connected with the lifting ring, a clamp is fixedly installed on the lower end surface of the rotating short shaft, a linkage rod is rotatably installed at the inner bottom end of the bracket and at a position away from the tank body, a connecting head is fixedly installed on the upper end of the clamp, the connecting head is slidably connected to the clamp, and the linkage rod and the sealing ring sleeve are driven through a bevel gear pair.

[0014] Preferably, a vertical plate is fixedly installed on one side of the bracket and at a position away from the linkage rod, and a plurality of support blocks are installed on a side of the vertical plate close to the tank body, and the support blocks are fixedly connected to the tank body.

[0015] Preferably, an exhaust round box is fixedly installed on the outer wall of the transmission rod and above the tank body, a lifting plate is fixedly installed on the outer wall of the transmission rod and inside the exhaust round box, the outer wall of the lifting plate is airtightly slidably connected to the exhaust round box, at least one first one-way valve is embedded in the upper end surface of the exhaust round box, at least one second one-way valve is embedded in the lifting plate, and an exhaust chamber is formed between the lifting plate and the exhaust round box.

[0016] Preferably, a second slide groove is provided on the outer wall of the transmission rod and in the tank body, a slider is slidably installed in the second slide groove, a fastening screw is threadedly installed in the slider, a cross bar is fixedly installed on the upper end of the slider, a limit frame is fixedly installed on the end of the cross bar away from the transmission rod, a floating plate is slidably installed in the limit frame, an external box is fixedly installed on the lower end of the limit frame, a measuring element is fixedly installed on the bottom end of the external box, and the measuring element is electrically connected to the controller.

[0017] Preferably, a material box is provided at the upper end of the top cover, the material box is filled with defoaming agent, a pipe is fixedly installed between the material box and the top cover, the pipe passes through the top cover and is connected to the tank body, a solenoid valve is fixedly installed in the pipe, and the solenoid valve is electrically connected to the controller.

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] First, through the setting of the detection element, in the process of the stirring blades stirring the material in the tank, the viscosity of the material will hinder the rotation of the stirring blades, thereby driving the stirring blades and the rotating ring to rotate on the connecting ring. In the process of rotation of the rotating ring, the rotating ring will drive the detection rod to rotate at the detection end of the detection element, and it is detected that the rotating ring rotates on the connecting ring due to the excessive viscosity of the material, thereby determining that the viscosity of the material is too high, and then controlling the heating element through the controller to increase the heating power. The increase in heat will increase the molecular motion energy and reduce the interaction force between molecules, making the molecular chains of polypropylene flow more freely, thereby reducing its internal molecular friction and resistance, and the viscosity will be reduced.

[0020] Secondly, by opening the lifting drive part, the transmission rod drives the stirring blades to reciprocate and lift in the tank body. During the reciprocating lifting process, the stirring blades will stir the material evenly. During the reciprocating lifting and stirring process of the stirring blades, the internal stirring rod will stir the side of the material in the opposite direction of the inner wall of the tank body, exerting additional shear force on the side of the material, promoting the cracking and dispersion of the material in the radial direction, and achieving a better mixing effect as the heat is continuously increased.

[0021] Third, during the reciprocating lifting of the transmission rod, the air in the tank body will enter the air injection cavity from the second one-way valve, and then be discharged from the first one-way valve, thereby reducing the air in the tank body and preventing air from entering the material to generate bubbles during stirring. During the heating process to reduce the viscosity and stir, the floating plate provided can detect the height of the bubbles, and the height of the floating plate can be detected by measuring the element to determine whether bubbles are generated, and defoaming agent can be added to the tank body to avoid bubble generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the stirring assembly of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the rotating ring of the present invention when viewed from bottom up;

[0027] Figure 5 It is a schematic diagram of the exploded structure of the rotating ring of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the lifting drive assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the exploded structure of the connector of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the rotating ring of the present invention;

[0031] Fig. 9 It is a schematic cross-sectional structural diagram of the exhaust round box of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of the exhaust detection component of the present invention;

[0033] Fig.11 for Fig.10 Enlarged structural diagram at A in the middle.

[0034] Figure numerals: 1, bracket; 2, discharge barrel; 3, sealing cover plate; 4, tank body; 5, stirring assembly; 501, first U-shaped frame; 502, support frame; 503, transmission rod; 504, joint; 505, rotating ring; 506, coil spring; 507, connecting ring; 508, detection element; 509, detection rod; 510, stirring fan blade; 511, screw head; 512, extrusion block; 6, lifting drive assembly; 601, heating element; 602, vertical plate; 603, support block; 604, linkage rod; 605, connector; 606, clamp; 607, Rotating short shaft; 609, rotating ring; 610, sealing ring sleeve; 611, inner stirring rod; 612, second U-shaped frame; 613, lifting drive member; 614, connecting plate; 615, first slide groove; 616, lifting sleeve ring; 7, detection exhaust component; 701, exhaust round box; 702, first one-way valve; 703, lifting plate; 704, second one-way valve; 705, second slide groove; 706, slider; 707, fastening screw; 708, cross bar; 709, limit frame; 710, external box; 711, measuring element; 712, floating plate; 713, material box. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0036] The present invention will be further described below in conjunction with the embodiments.

[0037] Example: Refer to Figures 1 to 11 , a polypropylene mixing and stirring tank, comprising:

[0038] The bracket 1 has a top cover slidably mounted on the upper end of the bracket 1, a tank body 4 is fixedly mounted on the inner bottom end of the bracket 1, the top cover is airtightly slidably connected to the upper end of the tank body 4, a material discharge cover is slidably mounted on the lower end surface of the bracket 1, a material discharge barrel 2 is fixedly mounted on the upper end surface of the top cover, a sealing cover plate 3 is airtightly slidably mounted on the upper end of the material discharge barrel 2, the material discharge barrel 2 passes through the bracket 1 and is connected to the tank body 4, and the top cover can be separated from the bracket 1, such as Figure 2 As shown, it is convenient to adjust the screw head 511 and clean the tank body 4;

[0039] The stirring assembly 5 includes a plurality of rotating rings 505 evenly arranged on the inner wall of the tank body 4, and a plurality of stirring blades 510 are evenly installed on the outer wall of the rotating ring 505. A detection element 508 is arranged inside the rotating ring 505, and the detection element 508 is electrically connected to the controller. A detection rod 509 is rotatably installed on the detection end of the detection element 508, and the detection rod 509 is fixed to the inner wall of the rotating ring 505. The detection element 508 can be used with an existing angle displacement sensor. The angle displacement sensor is also often called an angle sensor or a rotation sensor. It is a device for measuring the angle change of an object, and can detect and output the rotation angle or displacement information of the object;

[0040] The lifting drive assembly 6 includes a plurality of inner stirring rods 611 equidistantly arranged on the inner wall of the tank body 4. During the stirring process of the stirring blades 510, the inner stirring rods 611 cooperate with the stirring blades 510 to rotate on the inner wall of the tank body 4 to stir the polypropylene and the raw material;

[0041] The detection exhaust component 7 is used to exhaust the air in the tank body 4 during stirring and detect the bubble height during stirring to add a defoaming agent. The defoaming agent is a chemical additive used to inhibit or eliminate foam in the liquid. The foam is controlled by destroying the bubble film in the liquid or reducing the generation of bubbles.

[0042] Reference Figures 3 to 5 Two support frames 502 are symmetrically installed on the upper end surface of the top cover, and a first U-shaped frame 501 is slidably installed on the outer side of the two support frames 502. A transmission rod 503 is rotatably installed on the inner top of the first U-shaped frame 501. A rotating driving member is fixedly installed on the upper end of the first U-shaped frame 501. The output end of the rotating driving member passes through the first U-shaped frame 501 and is fixedly connected to the transmission rod 503. The lower end of the transmission rod 503 passes through the top cover and extends into the tank body 4. A plurality of joints 504 are equidistantly installed in the transmission rod 503. The lower end surface of the joint 504 is rotatably connected to the rotating ring 505. The joint 504 is rotatably connected to the rotating ring 505. 4 is fixedly installed with a connecting ring 507 at the middle position, the inner wall of the connecting ring 507 is fixedly connected to the detection element 508, a coil spring 506 is fixedly installed between the connecting ring 507 and the rotating ring 505, a screw head 511 is installed on the internal thread of the joint 504, an extrusion block 512 is fixedly installed on the lower end of the screw head 511, the extrusion block 512 is slidably connected to the rotating ring 505, the connecting ring 507 can support the detection element 508, and the coil spring 506 can drive the rotating ring 505 and the stirring fan blade 510 to return to their original positions after the viscosity of the material becomes low.

[0043] Reference Figures 6 to 8A plurality of heating elements 601 are equidistantly installed on the outer wall of the tank body 4, and the heating elements 601 are electrically connected to the controller. A plurality of rotating rings 609 are equidistantly installed in the tank body 4, and the inner wall of the rotating ring 609 is fixedly connected to the inner stirring rod 611. A sealing ring sleeve 610 is fixedly installed on the outer wall of the rotating ring 609, and the sealing ring sleeve 610 is airtightly slidably connected to the outer wall of the tank body 4. The sealing ring sleeve 610 and the rotating ring 609 are driven, and a second U-shaped frame 612 is fixedly installed on the upper end of the top cover and at a position away from the lower barrel 2. The upper end of the second U-shaped frame 612 A lifting drive member 613 is fixedly installed at the end, and the lifting drive member 613 is electrically connected to the controller. The telescopic end of the lifting drive member 613 passes through the second U-shaped frame 612 and extends into the interior thereof. The telescopic end of the lifting drive member 613 is fixedly connected to the transmission rod 503 through a connecting plate 614. The inner stirring rod 611 can stir the material in the tank body 4. When the stirring blade 510 is driven to rise, the inner stirring rod 611 can assist in stirring the material with higher viscosity and stir the material from the side of the material.

[0044] Reference Figure 7 A first slide groove 615 is provided at the upper position of the outer wall of the transmission rod 503, and a lifting ring 616 is slidably installed in the first slide groove 615. A rotating short shaft 607 is rotatably installed in the top cover and at a position away from the tank body 4. The rotating short shaft 607 is connected with the lifting ring 616 with a transmission. A clamping head 606 is fixedly installed on the lower end surface of the rotating short shaft 607. A linkage rod 604 is rotatably installed at the inner bottom end of the bracket 1 and at a position away from the tank body 4. A connecting rod 604 is fixedly installed on the upper end of the clamping head 606. Head 605, connecting head 605 is slidably connected with clamping head 606, linkage rod 604 and sealing ring sleeve 610 are driven by bevel gear pair, a vertical plate 602 is fixedly installed on one side of bracket 1 and away from linkage rod 604, a plurality of support blocks 603 are installed on one side of vertical plate 602 close to tank body 4, support blocks 603 are fixedly connected with tank body 4, and through the set clamping head 606, when the top cover and bracket 1 are combined, the clamping head 606 can be slidably connected with connecting head 605 for transmission.

[0045] Reference Figures 9 to 11, an exhaust round box 701 is fixedly installed on the outer wall of the transmission rod 503 and above the tank body 4, a lifting plate 703 is fixedly installed on the outer wall of the transmission rod 503 and in the exhaust round box 701, the outer wall of the lifting plate 703 is airtightly slidably connected with the exhaust round box 701, at least one first one-way valve 702 is embedded in the upper end surface of the exhaust round box 701, at least one second one-way valve 704 is embedded in the lifting plate 703, and an exhaust cavity is formed between the lifting plate 703 and the exhaust round box 701, a second slide groove 705 is opened on the outer wall of the transmission rod 503 and in the tank body 4, a slider 706 is slidably installed in the second slide groove 705, a fastening screw 707 is installed on the inner thread of the slider 706, a cross bar 708 is fixedly installed on the upper end of the slider 706, and a limiting frame 709 is fixedly installed on the end of the cross bar 708 away from the transmission rod 503, and the limiting frame 70 9 is slidably installed with a floating plate 712, and the floating plate 712 is made of polyurethane. The polyurethane foam can effectively isolate moisture, does not absorb water, and has good corrosion resistance. An external box 710 is fixedly installed at the lower end of the limit frame 709, and a measuring element 711 is fixedly installed at the bottom end of the external box 710. The measuring element 711 can be used with an existing laser displacement sensor. The laser displacement sensor is a sensor that uses laser technology to perform precise displacement measurement and can measure the position, shape and displacement of the surface of an object with high precision. The measuring element 711 is electrically connected to the controller, and a material box 713 is provided at the upper end of the top cover. The material box 713 is filled with a defoaming agent. A pipe is fixedly installed between the material box 713 and the top cover, and the pipe passes through the top cover and is connected to the tank body 4. An electromagnetic valve is fixedly installed in the pipe, and the electromagnetic valve is electrically connected to the controller.

[0046] The working principle of the present invention is as follows:

[0047] By opening the sealing cover plate 3, polypropylene and raw materials (hereinafter referred to as materials) are put into the tank body 4 from the lower barrel 2, and the transmission rod 503 is driven to rotate by opening the rotating driving member. The rotating transmission rod 503 will drive the joint 504, the rotating ring 505, and the stirring blade 510 to rotate to stir the material. The multiple rotating rings 505 provided will stir the material in the upper layer, the middle layer, and the lower layer in the tank body 4 respectively, so that the material is mixed more evenly. In the process of stirring and mixing the material, when the viscosity of the material is high, the rotating ring 505 will drive the stirring blade 510 to rotate due to the viscosity of the material. The rotating ring 505 will rotate on the outer wall of the connecting ring 507 due to the resistance, and the coil spring 506 will be wound. The rotating rotating ring 505 will drive the detection rod 509 to rotate at the detection end of the detection element 508. The detection element 508 will detect the rotation amplitude of the detection rod 509, output a signal to the controller, and control the heating element 601 through the controller to increase the heating power, thereby increasing the temperature of the material during stirring.

[0048] It should be noted that the material usually needs to be heated during the stirring process, especially when mixing in a molten state. The material is heated by setting the initial heating temperature of the heating element 601. The heating temperature of polypropylene needs to be controlled between 180°C and 230°C, and the initial temperature can be set at about 200°C. In the subsequent stirring process, the detection element 508 can detect and gradually increase the heating temperature. After the viscosity of the material decreases, the wound coil spring 506 will release the stored energy to drive the rotating ring 505 and the stirring blade 510 to return to their original positions. It should also be noted that the extrusion block 512 is driven down in the joint 504 by twisting the screw head 511, so that the extrusion block 512 squeezes the rotating ring 505 for friction, so that the friction between the extrusion block 512 and the rotating ring 505 is greater than the viscosity of the material after melting. In this way, after the material is melted, the rotating ring 505 and the stirring blade 510 will not rotate when stirring the melted material;

[0049] In the process of raising the temperature and stirring the material with too high viscosity, the rotating transmission rod 503 will drive the lifting ring 616 to rotate, and the lifting ring 616 drives the rotating short shaft 607 to rotate through the belt transmission, and the rotating short shaft 607 is slidably connected with the connecting head 605 through the clamping head 606 to drive the connecting head 605 and the linkage rod 604 to rotate, and the linkage rod 604 drives the sealing ring sleeve 610 and the rotating ring 609 and the inner stirring rod 611 to rotate in the opposite direction on the inner wall of the tank body 4 through the bevel gear pair, and the rotating inner stirring rod 611 cooperates with the stirring blades 510 to stir the material, thereby improving the stirring efficiency, and the lifting driving member 613 is driven by the controller. The telescopic end drives the connecting plate 614 to move up and down, and the moving connecting plate 614 drives the transmission rod 503 and the stirring blade 510 to move up and down reciprocatingly, so that the first U-shaped frame 501 moves up and down while stirring. If the viscosity of the material is too high at this time, the material will be agglomerated due to the high viscosity. The rising stirring blade 510 will drive the high-viscosity and agglomerated material to rise together in the tank body 4. At this time, the inner stirring rod 611 rotates in the opposite direction on the inner wall of the tank body 4 to stir the agglomerated material on the side, and applies additional shear force to the side of the material, which promotes the cracking and dispersion of the material in the radial direction, and achieves a better mixing effect with continuous heating;

[0050] During the rising process of the transmission rod 503, the transmission rod 503 will drive the lifting plate 703 to slide and rise on the inner wall of the exhaust round box 701. The rising lifting plate 703 will squeeze the air in the exhaust chamber and discharge it outward from the first one-way valve 702. When the lifting plate 703 descends in the exhaust round box 701, the air in the tank body 4 will enter the exhaust chamber from the second one-way valve 704. As the lifting plate 703 continues to rise and fall with the transmission rod 503, the air in the tank body 4 can be continuously discharged outward. Finally, the heating element 601 is continuously heated to reduce the viscosity of the material in the tank body 4 and reach a suitable stirring temperature, the lifting drive member 613 stops driving the transmission rod 503 to rise and fall. At this time, the stirring blades 510 set will stir the material with low viscosity in the tank body 4. During the stirring process, when bubbles are generated in the material (when the viscosity of polypropylene and its mixture is high, the shear force of the agitator on the material is increased, which makes it easy for air to be drawn in and form bubbles. This Some bubbles may not be able to escape quickly from the high viscosity system, resulting in the formation of foam. The reasons for the formation of the above bubbles can be reduced by continuously discharging air from the air injection cavity. However, during the heating process, polypropylene and other substances may release gas (such as solvent volatilization, etc.), resulting in bubble generation. When the temperature is too high, volatile components are more likely to volatilize, thereby increasing the generation of bubbles. When bubbles appear in the material, the bubbles will emerge from the upper layer of the material in the tank body 4. The emerging bubbles will continue to gather and rise in the tank body 4, and contact with the floating plate 712, driving the floating plate 712 to rise in the limit frame 709. At this time, the controller opens the measuring element 711 (the measuring element 711 can be opened after the lifting drive 613 stops driving the transmission rod 503 to reciprocate), the measuring element 711 will detect the lifting height of the floating plate 712, and open the solenoid valve to allow the defoaming agent in the material box 713 to enter the tank body 4 from the pipeline and mix with the material to avoid the generation of bubbles after the material is mixed.

[0051] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A polypropylene mixing and stirring tank, characterized in that: include: A bracket (1), a top cover is slidably mounted on the upper end of the bracket (1), a tank body (4) is fixedly mounted on the inner bottom end of the bracket (1), the top cover is airtightly slidably connected to the upper end of the tank body (4), a material discharge cover is slidably mounted on the lower end surface of the bracket (1), a material discharge barrel (2) is fixedly mounted on the upper end surface of the top cover, a sealing cover plate (3) is airtightly slidably mounted on the upper end of the material discharge barrel (2), and the material discharge barrel (2) passes through the bracket (1) and is connected to the tank body (4); A stirring assembly (5), the stirring assembly (5) comprising a plurality of rotating rings (505) uniformly arranged on the inner wall of the tank body (4), a plurality of stirring blades (510) uniformly mounted on the outer wall of the rotating ring (505), a detection element (508) being arranged inside the rotating ring (505), the detection element (508) being electrically connected to a controller, a detection rod (509) being rotatably mounted on the detection end of the detection element (508), and the detection rod (509) being fixed to the inner wall of the rotating ring (505); A lifting drive assembly (6), the lifting drive assembly (6) comprising a plurality of inner stirring rods (611) equidistantly arranged on the inner wall of the tank body (4), wherein during the stirring process of the stirring blades (510), the inner stirring rods (611) cooperate with the stirring blades (510) to rotate on the inner wall of the tank body (4) to stir the polypropylene and the raw material; A detection exhaust component (7) is used to exhaust air in the tank (4) during stirring and to detect the bubble height during stirring to add a defoaming agent; Two support frames (502) are symmetrically mounted on the upper end surface of the top cover, a first U-shaped frame (501) is slidably mounted on the outer sides of the two support frames (502), and a transmission rod (503) is rotatably mounted on the inner top end of the first U-shaped frame (501); The outer wall of the tank body (4) is equidistantly mounted with a plurality of heating elements (601), the heating elements (601) being electrically connected to a controller, the tank body (4) is equidistantly mounted with a plurality of rotating rings (609), the inner wall of the rotating ring (609) being fixedly connected to an inner stirring rod (611), the outer wall of the rotating ring (609) being fixedly mounted with a sealing ring sleeve (610), the sealing ring sleeve (610) being airtightly slidably connected to the outer wall of the tank body (4), the sealing ring sleeve (610) and the rotating ring (609) being in a sealed state. ) is driven, a second U-shaped frame (612) is fixedly installed on the upper end of the top cover and at a position away from the lower barrel (2), a lifting drive member (613) is fixedly installed on the upper end of the second U-shaped frame (612), the lifting drive member (613) is electrically connected to the controller, the telescopic end of the lifting drive member (613) passes through the second U-shaped frame (612) and extends into the interior thereof, and the telescopic end of the lifting drive member (613) is fixedly connected to the transmission rod (503) via a connecting plate (614); A first slide groove (615) is provided at an upper position of the outer wall of the transmission rod (503), and a lifting ring (616) is slidably installed in the first slide groove (615). A rotating short shaft (607) is rotatably installed in the top cover at a position away from the tank body (4), and the rotating short shaft (607) is connected to the lifting ring (616) by belt transmission. A clamping head (606) is fixedly installed on the lower end surface of the rotating short shaft (607). A linkage rod (604) is rotatably installed at the inner bottom end of the bracket (1) at a position away from the tank body (4), and a connecting head (605) is fixedly installed on the upper end of the clamping head (606). The connecting head (605) is slidably connected to the clamping head (606), and the linkage rod (604) and the sealing ring sleeve (610) are driven by a bevel gear pair.

2. A polypropylene mixing and stirring tank according to claim 1, characterized in that: A rotating drive member is fixedly mounted on the upper end of the first U-shaped frame (501); the output end of the rotating drive member passes through the first U-shaped frame (501) and is fixedly connected to a transmission rod (503); the lower end of the transmission rod (503) passes through the top cover and extends into the tank body (4); a plurality of joints (504) are equidistantly mounted in the transmission rod (503); the lower end surfaces of the joints (504) are rotatably connected to a rotating ring (505); and the lower end surfaces of the joints (504) are A connecting ring (507) is fixedly installed at the middle position, the inner wall of the connecting ring (507) is fixedly connected to the detection element (508), a coil spring (506) is fixedly installed between the connecting ring (507) and the rotating ring (505), a screw head (511) is installed on the internal thread of the joint (504), an extrusion block (512) is fixedly installed at the lower end of the screw head (511), and the extrusion block (512) is slidably connected to the rotating ring (505).

3. A polypropylene mixing and stirring tank according to claim 1, characterized in that: A vertical plate (602) is fixedly mounted on one side of the bracket (1) and at a position away from the linkage rod (604); a plurality of support blocks (603) are mounted on a side of the vertical plate (602) close to the tank body (4); and the support blocks (603) are fixedly connected to the tank body (4).

4. A polypropylene mixing and stirring tank according to claim 1, characterized in that: An exhaust round box (701) is fixedly mounted on the outer wall of the transmission rod (503) and above the tank body (4); a lifting plate (703) is fixedly mounted on the outer wall of the transmission rod (503) and inside the exhaust round box (701); the outer wall of the lifting plate (703) is airtightly slidably connected to the exhaust round box (701); at least one first one-way valve (702) is embedded in the upper end surface of the exhaust round box (701); at least one second one-way valve (704) is embedded in the lifting plate (703); and an exhaust cavity is formed between the lifting plate (703) and the exhaust round box (701).

5. A polypropylene mixing and stirring tank according to claim 4, characterized in that: The outer wall of the transmission rod (503) and the tank body (4) are provided with a second slide groove (705), a slider (706) is slidably mounted in the second slide groove (705), a fastening screw (707) is internally threadedly mounted in the slider (706), a cross bar (708) is fixedly mounted on the upper end of the slider (706), a limit frame (709) is fixedly mounted on one end of the cross bar (708) away from the transmission rod (503), a floating plate (712) is slidably mounted in the limit frame (709), an external box (710) is fixedly mounted on the lower end of the limit frame (709), a measuring element (711) is fixedly mounted on the bottom end of the external box (710), and the measuring element (711) is electrically connected to the controller.

6. A polypropylene mixing and stirring tank according to claim 1, characterized in that: A material box (713) is provided at the upper end of the top cover, the material box (713) is filled with a defoaming agent, a pipe is fixedly installed between the material box (713) and the top cover, the pipe passes through the top cover and is connected to the tank body (4), a solenoid valve is fixedly installed in the pipe, and the solenoid valve is electrically connected to the controller.

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