Mixing system containing multiple stirring mechanisms

Abstract

The utility model discloses a material mixing system containing a plurality of stirring mechanisms. The material mixing system comprises a bracket, a feeding hopper, a storage hopper, a material mixing barrel, a motor, a material conveying barrel, a screw rod, a stirring disc, a baffle plate, stirring blades, a material receiving box, a material changing opening, a material outlet, a material discharging opening and an observation opening. The multiple stirring mechanisms are arranged, and each stirring mechanism comprises a multi-layer stirring structure, so that raw materials are repeatedly stirred, dispersed and mixed for multiple rounds, and the raw materials are mixed more uniformly and fully.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers for engineering plastics, in particular to a mixing system containing a plurality of stirring mechanisms. Background Art

[0002] Engineering plastics can be divided into two categories: general engineering plastics and special engineering plastics. The former mainly includes five general engineering plastics: polyamide, polycarbonate, polyoxymethylene, modified polyphenylene ether and thermoplastic polyester; the latter mainly refers to engineering plastics with heat resistance of more than 150°C, and the main varieties are polyimide, polyphenylene sulfide, polysulfone, aromatic polyamide, polyarylate, polyphenyl ester, polyaryletherketone, liquid crystal polymer and fluororesin. Engineering plastics have excellent comprehensive properties, light weight, high specific strength, outstanding friction reduction and wear resistance, high rigidity, low creep, good heat and cold resistance, good corrosion resistance, good electrical insulation, can be used for a long time in harsh chemical and physical environments, and can replace metals as engineering structural materials and are increasingly used.

[0003] In the entire processing and molding process of engineering plastics, the mixing of raw materials is the basic process at the front end of the process. The uniformity and sufficiency of the raw material mixing will directly affect the final performance of the engineering plastics. Therefore, people are still pursuing the research and development of mixers. With the deepening and development of research and development, higher requirements and challenges are put forward for the mixing equipment and process technology of raw materials. In the existing production technology, the mixing of raw materials mainly relies on the stirring mechanism to stir, disperse, evenly distribute and mix the raw materials containing various component chemicals. For example, patent CN117599669 A discloses a high-speed mixer, including a stirring barrel, a tumbling assembly, a shearing assembly, a first driving member and a second driving member. The tumbling assembly and the shearing assembly are driven to rotate separately by the first driving member and the second driving member respectively. The tumbling assembly at the bottom can rotate at a medium-low first speed, and the shearing assembly at the top rotates at a higher second speed to meet the needs of stirring and dispersing different materials and improve compatibility.

[0004] In traditional or existing technologies, generally only 1-2 stirring mechanisms are used to stir, disperse and mix the raw materials, which has disadvantages such as low stirring efficiency, uneven dispersion, and insufficient mixing, so it is necessary to redesign the structure of the mixing system. Summary of the invention

[0005] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a mixing system containing multiple stirring mechanisms.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A mixing system with multiple stirring mechanisms mainly comprises a bracket, a feeding hopper, a storage hopper, a mixing barrel, a motor, a conveying barrel, a screw, a stirring disc, a baffle, stirring blades, a material receiving box, a material changing port, a material discharging port, a material discharge port and an observation port.

[0008] The bracket is supported by four sub-brackets erected from bottom to top, the bottoms of the four sub-brackets are welded together in a square shape with support plates, and the four sub-brackets are symmetrically distributed at 90° along the center. The bracket is used to support the entire mixing system and keep the mixing system in a vertical state.

[0009] A feed hopper is arranged at the center of the bottom of the mixing system, and the feed hopper is in the shape of an inverted triangular cone; a storage hopper is arranged directly above the feed hopper, and the storage hopper is an inverted square funnel; a mixing barrel is arranged directly above the storage hopper, and the upper part of the mixing barrel is cylindrical, and the lower part is in the shape of an inverted cone; the upper cylinder of the mixing barrel is welded and supported by the four sub-brackets of the bracket, and the inverted cone-shaped bottom of the mixing barrel is welded and connected to the bottom of the storage hopper and supports the storage hopper.

[0010] A feeding barrel is arranged at the tip of the inverted triangular cone at the bottom of the feed hopper, and the feeding barrel is cylindrical and extends upward from the feed hopper through the storage hopper to the top of the mixing barrel. A screw is arranged inside the feeding barrel, and the screw and the feeding barrel are tightly fitted together. The screw extends from the bottom of the feeding barrel to the top of the mixing barrel. A motor is arranged above the top of the outside of the mixing barrel, and the motor is fixed on the side wall of the mixing barrel, and the feeding barrel and the screw are respectively connected to the driving shaft of the motor through a belt through a transfer structure; a plurality of layers of stirring disks are arranged from top to bottom on the outer side wall of the upper part of the feeding barrel, and the stirring disk is in the shape of a circular sector with a small upper radius and a large lower radius, and is inclined downward at a certain angle. The stirring disk and the feeding barrel are welded and connected together; the inner wall of the upper part of the mixing barrel is also Several layers of baffles are uniformly distributed along the axial direction of the feeding barrel at equal distances, and the baffles are downwardly inclined at a certain inclination angle around the circumference of the inner wall of the mixing barrel and distributed corresponding to the fan surface of the stirring disk; inside the storage hopper, on the outer wall of the middle part of the feeding barrel, several layers of multi-layer stirring blades are uniformly distributed along the axial direction of the feeding barrel at equal distances, and in the direction perpendicular to the axial direction of the feeding barrel, the stirring blades are uniformly and symmetrically distributed along the axis of the feeding barrel; a material changing port and a material discharging port are provided at the bottom of the storage hopper, the material changing port leads to the feeding hopper, and a material changing control valve is provided at the material changing port; the material discharging port leads to a material receiving box, and a material discharging control valve is provided at the material discharging port; the material receiving box is located on the side of the mixing system, and is connected to the material discharging port through a material discharging pipe; at the upper part of the feeding barrel, 20-50 meters away from the top mm, a plurality of discharge ports are evenly arranged on the outer wall of the feeding cylinder at equal intervals along the circumferential direction; an observation port is arranged on the middle outer wall of the mixing cylinder.

[0011] Preferably, the feed hopper, storage hopper, mixing barrel, conveying barrel, screw, stirring disc, baffle, stirring blade are all symmetrically arranged with the central axis of the mixing barrel as the center of the circle.

[0012] Preferably, the connection structure between the screw and the motor is a screw sleeve sleeved on the central axis of the screw, the screw sleeve and the screw are connected by gear engagement, and the screw sleeve and the driving shaft of the motor are connected by a belt.

[0013] Preferably, the connection structure between the feed barrel and the motor is a feed barrel sleeve on the top outer ring of the feed barrel, the feed barrel sleeve is engaged with the four or six small holes opened on the top of the feed barrel, and the feed barrel sleeve is connected to the driving shaft of the motor by a belt.

[0014] Preferably, the rotation directions of the screw and the stirring disc may be the same direction or opposite direction.

[0015] Preferably, the downward inclination angle of the stirring disc and the baffle is 30-45° with the horizontal direction.

[0016] Preferably, the stirring disk, baffle and stirring blades are all multi-layer structures.

[0017] Preferably, each layer of the stirring disks and each layer of the baffles are arranged in an interlaced manner.

[0018] By adopting the above technical solution, the raw materials can be repeatedly stirred, dispersed and mixed inside the mixing barrel and the storage hopper, so that the raw materials are mixed more evenly and fully.

[0019] Preferably, among the stirring blades, the stirring blades at the bottom layer are provided with a brush, and the bristles of the brush face toward the bottom, so as to fit closely to the bottom of the storage hopper.

[0020] The above technical solution can prevent the raw materials from piling up at the bottom of the storage hopper, and can also enable the raw materials to flow out of the material changing port or the material discharging port more quickly.

[0021] Preferably, the discharge openings are long rectangular strips, and the number of the discharge openings is 4, 6 or 8.

[0022] Preferably, the stirring blades are of a rotary vane structure, and the number of the stirring blades is 4, 6 or 8.

[0023] Preferably, a baffle is hingedly connected to the observation port; a hook is fixed to the side of the baffle away from the mixing barrel, a clamping rod is hingedly connected to the outer wall of the mixing barrel, and a hanging ring that cooperates with the hook is hingedly connected to one end of the clamping rod close to the mixing barrel.

[0024] The above technical solution is adopted to set the observation port to facilitate the staff to observe the mixing status of the materials in the mixing barrel, and to facilitate cleaning the inside of the mixing barrel to keep the inside of the mixing barrel clean; the baffle door can close the observation port, so as not to affect the normal operation of the mixing barrel. The baffle door is locked to the side wall of the mixing barrel by using the hasp of the hanging ring and the hook, and then the hanging ring is pressed by the pressing rod.

[0025] In summary, the beneficial technical effects of the utility model are:

[0026] By setting up multiple stirring mechanisms, and the stirring mechanisms contain multi-layer stirring structures, multiple rounds of repeated stirring, dispersion and mixing of the raw materials can be achieved, so that the raw materials are mixed more evenly and fully. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0029] Figure 1 This is a front cross-sectional view of the utility model - a mixing system containing multiple stirring mechanisms.

[0030] Figure 1 As shown in: 1. bracket, 2. feed hopper, 3. storage hopper, 4. mixing barrel, 5. motor, 6. conveying barrel, 7. screw, 8. stirring disc, 9. baffle, 10. stirring blade, 11. material receiving box, 12. material changing port, 13. material discharging port, 14. discharge port, 15. observation port. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] The terms such as "left", "right", "front", "back", "up", "down", "front", "back" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

[0033] Reference Figure 1 , which is a mixing system containing multiple stirring mechanisms disclosed in the utility model, mainly includes a bracket 1, a feed hopper 2, a storage hopper 3, a mixing barrel 4, a motor 5, a conveying barrel 6, a screw 7, a stirring disc 8, a baffle 9, a stirring blade 10, a material receiving box 11, a material changing port 12, a material discharging port 13, a discharge port 14 and an observation port 15.

[0034] The working process of the mixing system is as follows:

[0035] 1. The raw materials enter from the feed hopper 2 and are pushed upward by the screw 7 along the conveying tube 6. During this process, the raw materials undergo the first round of stirring, dispersion and mixing;

[0036] 2. The raw materials arrive at the discharge port 14, are discharged from the discharge port 14, and fall onto the first layer of stirring disk 8 in an umbrella-like manner;

[0037] 3. Under the combined effect of the centrifugal force of the rotating first-layer stirring disk 8 and the inclined structure, the raw materials are centrifugally thrown onto the first-layer baffle 9 along the first-layer stirring disk 8 from the center to the edge in a parabolic manner;

[0038] 4. Due to the blocking effect of the first baffle plate 9, the raw materials slide down from top to bottom along the inclined direction of the first baffle plate 9 onto the second stirring plate 8;

[0039] 5. Repeat steps 3 and 4, and the raw materials pass through the layers of stirring plates 8 and baffles 9 that are interlaced and distributed with each other in turn, and perform a second round of stirring, dispersion and mixing;

[0040] 6. The raw materials are thrown from the bottom stirring disk 8 to the inner wall of the inverted triangular cone of the mixing barrel 6 in a parabolic centrifugal manner, and slide along the inner wall to the first layer of stirring blades 10;

[0041] 7. The raw materials are stirred, dispersed and mixed by the first layer of stirring blades 10 under the rotation of the first layer of stirring blades 10;

[0042] 8. The raw materials slide onto the second layer of stirring blades 10, and continue to be stirred, dispersed and mixed, and then the third round of stirring, dispersing and mixing is carried out;

[0043] 9. While the raw materials are being stirred, dispersed and mixed on the stirring blades 10 at the bottom layer, the brushes on the stirring blades 10 at the bottom layer scrape the raw materials at the bottom of the storage hopper 3 to prevent the raw materials from accumulating at the bottom of the storage hopper 3;

[0044] 10. If the mixed raw materials need to be further mixed, open the material change control valve at the material change port 12, close the discharge control valve at the discharge port 13, and the raw materials flow out from the material change port 12 into the feed hopper 2, and repeat steps 1-10 to continue the mixing process until the mixed raw materials do not need to be further mixed;

[0045] 11. If the mixed raw materials do not need to be further mixed, close the material change control valve at the material change port 12, open the discharge control valve at the discharge port 13, and the raw materials flow out from the discharge port 13 and enter the material receiving box 11 through the discharge pipe.

[0046] Of course, the embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A mixing system comprising multiple stirring mechanisms, characterized in that: The machine mainly comprises a support (1), a feed hopper (2), a storage hopper (3), a mixing barrel (4), a motor (5), a conveying barrel (6), a screw (7), a stirring disc (8), a baffle (9), a stirring blade (10), a material receiving box (11), a material changing port (12), a material discharging port (13), a material discharge port (14) and an observation port (15); The support (1) is supported by four sub-supports erected from bottom to top, the bottoms of the four sub-supports are welded together in a square shape by support plates, and the four sub-supports are symmetrically distributed at 90° along the center; A feed hopper (2) is arranged at the center of the bottom of the mixing system, and the feed hopper (2) is in the shape of an inverted triangular cone; a storage hopper (3) is arranged directly above the feed hopper (2), and the storage hopper (3) is an inverted square funnel; a mixing barrel (4) is arranged directly above the storage hopper (3), and the upper part of the mixing barrel (4) is cylindrical and the lower part is in the shape of an inverted cone; the upper part of the mixing barrel (4) is welded and supported by the four sub-brackets of the bracket (1), and the inverted cone-shaped bottom of the mixing barrel (4) is welded and connected to the bottom of the storage hopper (3) and supports the storage hopper (3); A feeding barrel (6) is arranged at the tip of the inverted triangular cone at the bottom of the feeding hopper (2). The feeding barrel (6) is cylindrical and extends upward from the feeding hopper (2) through the storage hopper (3) to the top of the mixing barrel (4). A screw (7) is arranged inside the feeding barrel (6). The screw (7) and the feeding barrel (6) are tightly fitted. The screw (7) extends from the bottom of the feeding barrel (6) to the top of the mixing barrel (4). A motor (5) is arranged above the top of the outside of the mixing barrel (4). The motor (5) is fixed to the mixing barrel. On the side wall of the feeding barrel (4), the feeding barrel (6) and the screw (7) are respectively connected to the driving shaft of the motor (5) through a belt through a transfer structure; on the outer side wall of the upper part of the feeding barrel (6), a plurality of stirring discs (8) are arranged from top to bottom and are evenly distributed along the axial direction of the feeding barrel (6) at equal distances, and the stirring discs (8) are in the shape of a circular sector with a small upper radius and a large lower radius, which is inclined downward at a certain angle, and the stirring discs (8) and the feeding barrel (6) are welded together; the inner wall of the upper part of the mixing barrel (4) is also A plurality of baffles (9) are arranged at equal distances and evenly distributed along the axial direction of the feeding cylinder (6); the baffles (9) are arranged at a certain angle of inclination downward around the circumference of the inner wall of the mixing cylinder (4) and are distributed corresponding to the fan surface of the stirring disk (8); inside the storage hopper (3), on the outer wall of the middle part of the feeding cylinder (6), a plurality of multi-layer stirring blades (10) are arranged at equal distances and evenly distributed along the axial direction of the feeding cylinder (6); in a direction perpendicular to the axial direction of the feeding cylinder (6), the stirring blades (10) are arranged along The axis of the feeding cylinder (6) is evenly and symmetrically distributed; a material changing port (12) and a material discharging port (13) are provided at the bottom of the storage hopper (3); the material changing port (12) leads to the feeding hopper (2), and a material changing control valve is provided at the material changing port (12); the material discharging port (13) leads to a material receiving box (11), and a material discharging control valve is provided at the material discharging port (13); the material receiving box (11) is located on the side of the mixing system, and is connected to the material discharging port (13) through a material discharging pipe; a plurality of material discharging ports (14) are evenly spaced along the circumferential direction on the outer wall of the feeding cylinder (6) at a distance of 20-50 mm from the top; an observation port (15) is provided on the middle outer wall of the mixing cylinder (4).

2. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The feed hopper (2), storage hopper (3), mixing barrel (4), delivery barrel (6), screw (7), stirring disc (8), baffle (9), and stirring blade (10) are all symmetrically arranged with the central axis of the mixing barrel (4) as the center of the circle.

3. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The transition structure between the screw (7) and the motor (5) is a screw sleeve sleeved on the central axis of the screw (7), the screw sleeve and the screw (7) are connected by gear engagement, and the screw sleeve and the drive shaft of the motor (5) are connected by a belt.

4. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The connection structure between the feed barrel (6) and the motor (5) is a feed barrel sleeve on the top outer ring of the feed barrel (6), the feed barrel sleeve is engaged with four or six small holes opened on the top of the feed barrel (6), and the feed barrel sleeve is connected to the driving shaft of the motor (5) by a belt.

5. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The rotation directions of the screw (7) and the stirring disc (8) can be the same direction or opposite direction.

6. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The downward inclination angle of the stirring plate (8) and the baffle (9) is 30-45° with respect to the horizontal direction.

7. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The stirring disc (8), baffle (9) and stirring blade (10) are all multi-layer structures; each layer of stirring discs of the stirring disc (8) and each layer of baffles of the baffle (9) are interlaced and staggered.

8. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: In the stirring blades (10), the stirring blades (10) at the bottom layer are provided with a brush, and the bristles of the brush face toward the bottom, so as to fit closely to the bottom of the storage hopper (3).

9. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: The discharge openings (14) are in the form of long rectangular strips, and the number thereof is 4, 6 or 8; the stirring blades (10) are in the form of rotary vanes, and the number thereof is 4, 6 or 8.

10. A mixing system comprising multiple stirring mechanisms according to claim 1, characterized in that: A baffle is hingedly connected to the observation port (15), a hook is fixed to the side of the baffle away from the mixing barrel (4), a clamping rod is hingedly connected to the outer wall of the mixing barrel (4), and a hanging ring that cooperates with the hook is hingedly connected to the end of the clamping rod close to the mixing barrel (4).

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