Mixing stirrer

Abstract

The utility model discloses a mixing stirrer. The mixing stirrer is characterized by comprising a mixing stirrer body, the rear section of the mixing stirrer body is of a smooth connecting rod structure, the front section of the mixing stirrer body is of a propeller-shaped mixing structure, the propeller-shaped mixing structure comprises a first circle of propellers and a second circle of propellers, and a first circle of impact convex columns are further arranged between the first circle of propellers and the second circle of propellers. The double-component material stirring device is applied to a double-component material mixing device, not only is used for stirring materials and improving the mixing uniformity, but also is used for cleaning residual materials, and improves the mixing uniformity of the double-component materials on the basis of guaranteeing the injection fluency.

Description

Technical Field

[0001] The utility model relates to a mixing stirrer, in particular to a mixing stirrer applied to a two-component material mixing device. Background Art

[0002] When the two-component foaming and forming foam material is subjected to the foaming and forming process, it involves mixing the materials of components A and B and then injecting them into a specific foaming and forming container. For example, for bio-based polyurethane (PU) foamed sponge, it involves component A of bio-based polyurethane material (PU), and component B of polyurethane material (MDI) synthesized from isocyanate and polyol and their compounding auxiliaries. After the two components are mixed, they are injected into a specific foaming and forming container for foaming and forming.

[0003] The current two-component material mixing device simply adopts the structure of a mixing chamber, that is, a mixing chamber is formed through an outer sleeve base. Two feeding ports are opened at the rear end of the mixing chamber body, and one discharging port is opened at the front end. The two feeding ports are respectively connected to the high-pressure feeding pipelines of materials A and B. After the high-pressure materials A and B enter the mixing chamber for mixing, they are then injected into a specific foaming container through the discharging port.

[0004] Since the process of forming bio-based polyurethane foamed sponge products has the following characteristics: the mixed material has a certain viscosity, and its foaming and forming time is extremely fast, generally starting to foam and form in 10 seconds. Therefore, the current structure of the mixing chamber mainly has the following two deficiencies: First, the mixing is uneven; only relying on the high-pressure entry of materials A and B into the mixing chamber for mixing, without stirring and other processes, it is easy to cause uneven mixing. Second, after one injection of material for foaming, the remaining material is very easy to adhere to the chamber wall, corners, gaps, etc. of the mixing device, forming blockages; for this reason, it is necessary to clean the mixing chamber by manual cooperation with specific chemical solvents after each mixing, injection, and foaming. Each injection requires one cleaning, which is very time-consuming and laborious.

[0005] Therefore, a two-component material mixing device with a mixing function of a stirrer has been developed, and the mixing stirrer is one of the core components of this two-component material mixing device. It is necessary to carry out systematic and scientific improvement design on its structure to ensure that it can be well applied to the two-component material mixing device. Summary of the Utility Model

[0006] Aiming at the above deficiencies, the purpose of the present utility model is to provide a mixing stirrer, which is applied to a two-component material mixing device, not only stirs the materials to improve the mixing uniformity, but also cleans the remaining materials, and on the basis of ensuring the smoothness of injection, improves the mixing uniformity of the two-component materials.

[0007] The technical solution adopted by the utility model is: a mixing agitator, including a mixing agitator body; the rear section of the mixing agitator body is a smooth connecting rod structure, and the front section is a propeller-shaped mixing structure, the propeller-shaped mixing structure includes a first circle of propellers and a second circle of propellers, and a first circle of impact convex columns are also arranged between the first circle of propellers and the second circle of propellers.

[0008] Furthermore, the first circle of propellers and the second circle of propellers include more than three propeller blades respectively, and the first circle of impact bosses includes more than three impact bosses, and the impact bosses correspond to the flow space formed between two adjacent propeller blades, so that the material passing through the flow space between two adjacent propeller blades will collide with the impact bosses.

[0009] Furthermore, the inner side of the propeller blade along the axial direction of the mixer is the blade edge portion, and the outer side is the blade width portion. The streamline change between the blade edge portion and the blade width portion makes the flow space formed between two adjacent propeller blades have a streamline change trend from wide to narrow.

[0010] Furthermore, the propeller-shaped mixing structure includes a third circle of propellers, and a second circle of impact bosses is provided between the third circle of propellers and the second circle of propellers.

[0011] Furthermore, a circular bottom block is provided at the rear end of the smooth connecting rod structure. A notch is provided at the edge of the circular bottom block, and the notch is a symmetrical notch located on the same straight line of the circular bottom block.

[0012] The utility model has the following advantages: by setting a mixing agitator with a propeller-shaped mixing structure, the uniformity of the mixing of the two-component materials is improved on the basis of ensuring the smoothness of the injection, and the residual materials can be automatically scraped and cleaned and rotated and shaken clean after the injection is completed, so as to improve the efficiency and quality of the mixing and injection of the two-component materials. The core function of the mixing agitator is to scrape and shake off the residual materials, and then to improve the uniformity of the mixing of the two-component materials. In addition, the reason why the mixing agitator adopts a propeller-shaped mixing structure is that a first circle of impact convex columns are also arranged between the first circle of propellers and the second circle of propellers; in this way, the two high-pressure materials collide with each other to form a preliminary mixture, the mixing agitator rotates, the propeller blades form further mixing, and the impact convex columns correspond to the flow space formed between the two adjacent propeller blades, so that the high-pressure materials passing through the flow space between the two adjacent propeller blades will collide with the impact convex columns to form further mixing, so that the materials passing through the flow space between the two adjacent propeller blades at high pressure will collide with the impact convex columns to form further mixing, so that the materials passing through the flow space between the two adjacent propeller blades at high pressure will collide with the impact convex columns to form further mixing, so that the materials passing through the mixing chamber and the axial direction of the discharge channel are progressively advanced layer by layer, and the two materials are mixed evenly step by step while ensuring the smooth discharge.

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of a two-component material mixing device Figure 1 ;

[0015] Figure 2 It is an exploded structure schematic diagram of a two-component material mixing device;

[0016] Figure 3 It is a schematic diagram of the overall structure of a two-component material mixing device Figure 2 ;

[0017] Figure 4 It is Figure 3 A schematic diagram of the structure after hiding the right base block and the second feed piston switch;

[0018] Figure 5 It is Figure 4 A schematic diagram of the structure after hiding the bushing;

[0019] Figure 6 It is a schematic diagram of the mating structure of the mixing base, the rotating link shaft, the first and second feed piston switches Figure 1 ;

[0020] Figure 7 It is a schematic diagram of the mating structure of the mixing base, the rotating link shaft, the first and second feed piston switches Figure 2 ;

[0021] Figure 8 It is a schematic diagram of the mating structure of the mixing base and the mixing agitator Figure 1 ;

[0022] Figure 9 It is a schematic diagram of the mating structure of the mixing base and the mixing agitator Figure 2 ;

[0023] Figure 10 It is a schematic diagram of the mechanism of the mixing agitator Figure 1 ;

[0024] Figure 11 It is a schematic diagram of the mechanism of the mixing agitator Figure 2 ;

[0025] Figure 12 It is a schematic diagram of the structure of the left base block;

[0026] Figure 13 It is a schematic diagram of the structure of the right base block;

[0027] Figure 14 It is a schematic diagram of the mating structure of the first feed piston switch and the left base block;

[0028] In the figure: mixing base 1; left base block 1a; right base block 1b; mixing chamber 11; left half mixing chamber 11a; right half mixing chamber 11b; first feed channel 12; second feed channel 13; discharge channel 14; left half discharge channel 14a; right half discharge channel 14b; mixing agitator 2; propeller-shaped mixing structure 21; first circle of propellers 211; propeller blades 2111; flow-through space 2112; blade edge part 2113; blade width part 2114; second circle of propellers 212; first circle of impact convex columns 213; impact convex column 2131; third circle of propellers 214; second circle of impact convex columns 215; smooth connecting rod structure 22; circular bottom block 23; agitator rotation drive assembly 3; agitator telescopic drive assembly 4; telescopic mounting base 41; telescopic drive slide rail 42; telescopic drive slider 43; telescopic drive motor 44; rotation mounting bracket 31; rotation link shaft 32; rotation drive motor 33; shaft sleeve 34; first feed piston switch 5; first feed piston 51; first feed piston drive cylinder 52; first feed piston transition block 53; second feed piston switch 6; second feed piston 61; second feed piston drive cylinder 62; second feed piston transition block 63. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if the description of "first" or "second" is involved in the embodiments of the present utility model, such description of "first" or "second" is only for descriptive purposes and cannot be construed as indicating or implying its relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] See Figure 9 、 10 、11, the mixing and stirring device provided in this embodiment is mainly applied to a two-component material mixing device, and it includes a mixing and stirring device body; the rear section of the mixing and stirring device body is a smooth connecting rod structure 22, and the front section is a propeller-shaped mixing structure 21; the propeller-shaped mixing structure 21 includes a first ring of propellers 211 and a second ring of propellers 212, and between the first ring of propellers 211 and the second ring of propellers 212, a first ring of impact convex columns 213 is further provided.

[0033] Specifically, the first ring of propellers 211 and the second ring of propellers 212 each include more than three propeller blades 2111, the first ring of impact convex columns 213 includes more than three impact convex columns 2131, and the impact convex columns 2131 correspond to the flow-through space 2112 formed between two adjacent propeller blades 2111, so that the material passing through the flow-through space 2112 between two adjacent propeller blades 2111 will impact on the impact convex columns 2131; wherein, the inner side of the propeller blade 2111 along the axial direction of the mixing and stirring device is the blade edge part 2113, and the outer side is the blade width part 2114, and there is a streamlined change between the blade edge part 2113 and the blade width part 2114, so that the flow-through space 2112 formed between two adjacent propeller blades 2111 has a streamlined change trend of gradually narrowing from wide to narrow.

[0034] Specifically, the propeller-shaped mixing structure 21 includes a third ring of propellers 214, and between the third ring of propellers 214 and the second ring of propellers 212, a second ring of impact convex columns 215 is further provided. Theoretically, the propeller-shaped mixing structure may further include a fourth, fifth ring of propellers, and so on, and is selectively set according to the model size of the two-component material mixing device.

[0035] Specifically, the rear end of the smooth connecting rod structure is provided with a circular bottom block 23, the diameter of which matches the diameter of the mixing chamber 11 and the discharge channel 14. Notches are provided at the edge of the circular bottom block, and the notches are symmetrical notches located on the same straight line of the circular bottom block.

[0036] Next, the two-component material mixing device and the specific application of the mixing agitator in the two-component material mixing device are mainly described.

[0037] See also Figures 1 to 14 The two-component material mixing device provided in this embodiment includes a mixing base 1, wherein the mixing base 1 is provided with a mixing chamber 11, wherein the left and right sides of the mixing chamber 11 are respectively provided with a first feed channel 12 and a second feed channel 13, and the front side of the mixing chamber 11 is provided with a discharge channel 14; since the mixing chamber and the discharge channel in this embodiment adopt a circular straight-through structure with the same inner diameter, the numbers of the mixing chamber and the discharge channel in the drawings point to the same straight-through chamber;

[0038] The mixing device also includes a mixing agitator 2, which is arranged in the mixing chamber 11 and is adapted to the discharge channel 14, and can be extended and retracted along the axial direction of the discharge channel 14; a propeller-shaped mixing structure 21 is arranged on the body of the mixing agitator 2, and the outer diameter of the propeller mixing structure 21 is adapted to the inner diameter of the discharge channel 14, so that the mixing agitator 2 can scrape off the residual material in the discharge channel 14 when performing the extension and retraction action;

[0039] It also includes a stirrer rotation drive assembly 3, the stirrer rotation drive assembly 2 corresponds to the mixing stirrer 2, and drives the mixing stirrer 2 to rotate;

[0040] It also includes a stirrer telescopic drive component 4, which corresponds to the mixing stirrer 2 and drives the mixing stirrer 2 to perform telescopic movements.

[0041] By providing a mixing agitator 2 with a propeller-shaped mixing structure 21, and coordinating with a mixing agitator rotation drive component 3 and a mixing agitator telescopic drive component 4, the mixing agitator 2 can be rotated and can be axially telescopic along the mixing chamber 11 and the discharge channel 14, thereby improving the uniformity of the mixing of the two-component materials on the basis of ensuring the smoothness of the injection, and can automatically scrape and clean the residual materials and rotate and shake them clean after the injection is completed, thereby improving the efficiency and quality of the mixing and injection of the two-component materials. The core function of the mixing agitator 2 is to scrape and shake off the residual materials, and then to improve the uniformity of the mixing of the two-component materials.

[0042] Specifically, the mixing chamber 11 and the discharge channel 14 are circular straight-through structures with the same inner diameter, so that when the mixing agitator 2 performs telescopic movement, the residual materials in the mixing chamber 11 and the discharge channel 14 can be scraped off simultaneously, thus cleaning more thoroughly. It should be noted here that the mixing chamber 11 and the discharge channel 14 adopt a circular channel straight-through structure, and the mixing chamber 11 and the discharge channel 14 can be regarded as an integrated structure with only one overall cavity. This overall cavity is the "mixing and discharging channel", which serves as both a mixing chamber and a discharge channel, with a dual function in one cavity. In this way, not only can material jamming or excessive waste residue be avoided, but it is also more convenient to clean up thoroughly later.

[0043] Specifically, the reason why the mixing agitator 2 adopts a propeller-shaped mixing structure 21 is that a first-ring impact convex column 213 is provided between the first-ring propeller 211 and the second-ring propeller 212; in this way, two high-pressure materials collide with each other to form a preliminary mixture, and the mixing agitator 2 rotates, and the propeller blades cause the materials to form a further mixture. Moreover, the flow space formed between the impact convex column and adjacent two propeller blades corresponds, so that the materials passing through the flow space between adjacent two propeller blades under high pressure will impact on the impact convex column, causing the materials to form a further mixture. In this way, it progresses layer by layer along the axial direction of the mixing chamber and the discharge channel, while ensuring smooth discharge, the two materials are mixed evenly step by step.

[0044] It should be noted here that the specific shape of the propeller blades of the propeller-shaped mixing structure 21 is not limited. However, as shown in the appendix Figure 10 、 11 shown, the propeller blades 2111 of both the first-ring propeller 211 and the second-ring propeller 212 in this embodiment adopt a very preferred propeller blade structure. The side closer to the inside along the axial direction of the mixing agitator is the blade edge part 2113, and the side closer to the outside is the blade width part 2114, so that the flow space 2112 formed between adjacent two propeller blades has a tendency to gradually become narrower from wider. The blade edge part 2113 is like a knife edge, which has the functions of cutting and avoiding obstruction. The gradually narrowing flow space 2112 has the functions of extrusion mixing and increasing the flow rate, and makes the materials finally impact on the impact convex column more accurately. The whole structure is very scientific and reasonable, ensuring smoothness while maximizing the mixing uniformity and avoiding the possibility of material residue.

[0045] Here, it is also necessary to emphasize the function of the circular bottom block 23 at the rear end of the mixing blender 2. Since it is set at the rear end of the mixing blender 2 and its diameter is adapted to the diameters of the mixing chamber 11 and the discharge flow channel 14, it can completely scrape out the residual materials in the chamber. That is to say, where the screw mixing structure 21 of the mixing blender 2 cannot scrape cleanly, the circular bottom block 23 can serve as a supplementary and backup insurance to completely scrape clean the residual materials in the mixing chamber and the discharge flow channel. Of course, for the specific design of the circular bottom block 23, considering that in addition to the forward pushing action of the mixing blender 2, there is also a retracting action, in order to avoid forming a relatively sealed space between the circular bottom block and the bottom of the mixing chamber, which may affect the retracting or pushing action of the mixing blender due to the compression or release of the air in the sealed space, therefore, notches can be set at the edge position of the circular bottom block (a pair of opposite notches are better to ensure uniform force). Of course, the notches should be as small as possible to avoid forming a relatively sealed space between the circular bottom block and the bottom of the mixing chamber.

[0046] Specifically, the stirrer telescopic drive assembly 4 includes a telescopic mounting base 41, a telescopic drive slide rail 42, a telescopic drive slider 43, and a telescopic drive motor 44. The telescopic drive motor 44 and the telescopic drive slide rail 42 are arranged on the telescopic mounting base 41. The telescopic drive slider 43 is arranged on the telescopic drive slide rail 42. The telescopic drive motor 44 is connected to the telescopic drive slider 43 to drive the telescopic drive slider 43 to slide back and forth on the telescopic drive slide rail 42. The stirrer rotary drive assembly 3 includes a rotary mounting bracket 31, a rotary link shaft 32, and a rotary drive motor 33. The rotary link shaft 32 is connected to the mixing blender 2. The rotary drive motor 33 drives the mixing blender 2 to perform a rotary motion through the rotary link shaft 32. Among them, the stirrer rotary drive assembly 3 is arranged on the telescopic drive slider 43 of the stirrer telescopic drive assembly 4 through its rotary mounting bracket 31.

[0047] In this way, the stirrer rotary drive assembly 3 can drive the mixing blender 2 to perform a rotary motion through the cooperation of the rotary drive motor 33 and the rotary link shaft 32. At the same time, through the cooperation of the telescopic drive motor 44 and the telescopic drive slider 43, the stirrer rotary drive assembly 3 is driven to move back and forth, thereby driving the mixing blender 2 to perform a telescopic motion.

[0048] Here, it should be noted that the stirrer telescopic drive assembly 4 can also adopt a drive method such as a rotary cylinder. It can also include supporting components such as bearings and sensors. After all, the rotary link shaft needs to rotate. It is necessary to reduce friction, ensure the smoothness of its rotation, and detect its rotation speed, etc. These are all conventional technologies in this field and will not be elaborated here.

[0049] In addition, when considering the connection between the rotating link shaft 32 and the mixing agitator 2, another issue to be taken into account is the sealing performance. Based on this, a bushing structure is designed in this embodiment. The bushing 34 is provided with a link shaft hole, and the length of the link shaft hole can be designed to be relatively long. The rotating link shaft 32 passes through the link shaft hole of the bushing 34 and enters the mixing chamber 11 to be connected with the mixing agitator 2. By means of the cooperation between the rotating link shaft 32 and the link shaft hole of the bushing, a good sealing effect can be achieved. Generally speaking, the rotating link shaft 32 passes through the link shaft hole of the bushing 34 and then is connected with the mixing agitator 2 to drive the mixing agitator 2 to rotate. However, the bushing 34 itself does not rotate and only moves in a telescopic manner. Of course, since the bushing needs to move in a telescopic manner, sliding sealing measures are also required between the bushing and the mixing chamber 11, such as sealing rings.

[0050] It should be noted here that the agitator rotation drive assembly can also adopt driving methods such as telescopic cylinders. It can also include supporting components such as a motor base and a displacement sensor. These are all conventional technologies in this field and will not be elaborated here.

[0051] Specifically, referring to Figure 12 、 13 、14, the inlets of the first feed channel 12 and the second feed channel 13 are respectively arranged at the left and right parts of the upper side of the mixing base 1. Among them, the first feed channel 12 extends from top to bottom and then obliquely forward from back to front and enters the mixing chamber 11 from the left side. The second feed channel 13 extends from top to bottom and then obliquely forward from back to front and enters the mixing chamber 11 from the right side. As a result, a tendency is formed for two streams of materials to discharge obliquely forward and collide with each other between the first feed channel 12 and the second feed channel 13.

[0052] Generally speaking, for the first feed channel on the left, when the high-pressure component A material enters the mixing chamber along it, it is obliquely right forward. For the second feed channel on the right, when the high-pressure component B material enters the mixing chamber along it, it is obliquely left forward. The two streams of materials exactly correspond to each other, with a tendency to collide and a tendency to move forward, which is very scientific and reasonable. As the materials move forward, they will pass through the propeller-shaped mixing structure of the mixing agitator to be further mixed evenly.

[0053] In this way, the uniformity of the collision mixing of the materials is ensured, and the smoothness of the injection discharge of the mixed materials through the discharge channel is also ensured, avoiding the situation of material jamming.

[0054] Specifically, referring to Figure 2 、 6, 7, 14, the first feed channel 12 and the second feed channel 13 are respectively provided with a first feed piston switch 5 and a second feed piston switch 6; the first feed piston switch 5 is arranged on the left side of the mixing base 1 and corresponds to the first feed channel 12, and includes a first feed piston 51, a first feed piston driving cylinder 52, and a first feed piston transition block 53; the second feed piston switch 6 is arranged on the right side of the mixing base 1 and corresponds to the second feed channel 13, and includes a second feed piston 61, a second feed piston driving cylinder 62, and a second feed piston transition block 63. It can be used to adjust the feed flow and pressure of the first feed channel 12 and the second feed channel 13 in real time.

[0055] It should be noted here that in order to set the first feed piston 51 and the second feed piston 61 accordingly, the first feed channel 12 and the second feed channel 13 on the mixing base 1 must be respectively provided with piston receiving slots that are adapted to the first feed piston 51 and the second feed piston 61. The piston slot is connected to the feed channel. In this way, the extension and retraction of the feed piston can cooperate with the piston slot to play a switch role and also play a role in regulating the flow. For example, when the feed piston is extended forward to the bottom, the feed channel is completely closed, and when it is retracted to the bottom, the feed channel is completely opened. The general distance of extension is the distance of opening half of the feed channel.

[0056] Specifically, see Figure 12 , 13 , 14, the mixing base 1 includes a left base block 1a and a right base block 1b, the left base block 1a is provided with a first feed channel 12, a left half mixing chamber 11a and a left half discharge channel 14a, the right base block 1b is provided with a second feed channel 13, a right half mixing chamber 11b and a right half discharge channel 14b, the left base block 1a and the right base block 1b are buckled with each other and locked and fixed by a screw hole structure, so that the left half mixing chamber 11a and the right half mixing chamber 11b cooperate to form the mixing chamber 11, and the left half discharge channel 14a and the right half discharge channel 14b cooperate to form the discharge channel 14.

[0057] The reason why the mixing base adopts a half-and-half structure is to prevent it from getting stuck and becoming scrapped. Although the two-component material mixing device can automatically scrape and clean the residual materials and rotate and shake them clean, under special circumstances, such as sudden power outages, the residual materials will solidify and harden, and it is very likely to form a very hard blockage directly in the mixing chamber, completely blocking the mixing agitator. At this time, if the mixing base is an integrated structure, it cannot be pried open, and it cannot be disassembled for cleaning, so it can only be scrapped. With a half-and-half structure, the hardened and blocked residual materials can be disassembled and processed when necessary, so that the mixing base can be used again, which is more scientific and reasonable.

[0058] Attached drawings Figure 14 Figure 14 shows the mating structure between the first feeding piston switch 5 and the left base block 1a; similarly, the mating structure between the second feeding piston switch 6 and the right base block 1b is symmetrical thereto.

[0059] It further includes a mixing base, and the mixing base is locked and fixed on the mixing base through a screw and screw hole structure.

[0060] The two-component material mixing and injection method using the said device includes the following steps:

[0061] 1) The first-component material enters the mixing chamber from the first feeding channel through the pressure conveying pipeline. At the same time, the second-component material enters the mixing chamber from the second feeding channel through the pressure conveying pipeline. The two materials converge with each other, and under the cooperation of the mixing agitator, they impact and mix with each other, and under the action of pressure, are ejected along the discharging channel to achieve two-component material mixing and injection; wherein, during the process of two-component material mixing and injection, the mixing agitator can be selected to rotate or not to rotate;

[0062] 2) After completing one-time two-component material mixing and injection, the first feeding channel and the second feeding channel stop feeding; the agitator telescopic driving component drives the mixing agitator to extend forward along the axial direction of the mixing chamber and the discharging channel, so as to scrape off the residual material; the agitator rotation driving component drives the mixing agitator to rotate to shake off the residual material on the mixing agitator; the agitator telescopic driving component drives the mixing agitator to retract backward along the axial direction of the mixing chamber and the discharging channel; the process of the mixing agitator telescoping to scrape the residual material and rotating to shake off the residual material is selectively performed once or repeatedly to ensure that the residual material is cleaned up for the next two-component material mixing and injection.

[0063] After the two-component materials are mixed, once they come into contact with air, the foaming and molding time is extremely fast, generally starting to foam and mold in 10 seconds; therefore, after each two-component material mixing and injection, it is necessary to clean the residual material once. If the injection time is relatively long, such as more than 10 seconds, then it is necessary to repeat the operation and clean it back and forth several times to ensure that it is cleaned up. After all, every time the mixing agitator extends and retracts, it has a cleaning effect. In addition, the telescoping degree of the mixing agitator also pays attention. When it extends, it should extend completely, and when it retracts, it can retract a little more distance to clean (scrape) more cleanly.

[0064] The present utility model is not limited to the above embodiments. Other two-component material mixing devices obtained by adopting the same or similar technical features as those of the above embodiments of the present utility model are all within the protection scope of the present utility model.

Claims

1. A mixing agitator, characterized in that: It includes a mixing agitator body; the rear section of the mixing agitator body is a smooth connecting rod structure, and the front section is a propeller-shaped mixing structure, the propeller-shaped mixing structure includes a first circle of propellers and a second circle of propellers, and a first circle of impact bosses is also arranged between the first circle of propellers and the second circle of propellers.

2. The mixing agitator according to claim 1, characterized in that: The first circle of propellers and the second circle of propellers include more than three propeller blades respectively, and the first circle of impact bosses includes more than three impact bosses, and the impact bosses correspond to the flow space formed between two adjacent propeller blades, so that the material passing through the flow space between two adjacent propeller blades will collide with the impact bosses.

3. The mixing agitator according to claim 2, characterized in that: The inner side of the propeller blade along the axial direction of the mixer is the blade edge portion, and the outer side is the blade width portion. The streamline change between the blade edge portion and the blade width portion makes the flow space formed between two adjacent propeller blades have a streamline change trend from wide to narrow gradually.

4. The mixing agitator according to claim 3, characterized in that: The propeller-shaped mixing structure comprises a third circle of propellers, and a second circle of impact convex columns is arranged between the third circle of propellers and the second circle of propellers.

5. The mixing agitator according to claim 1, characterized in that: A circular bottom block is provided at the rear end of the smooth connecting rod structure.

6. The mixing agitator according to claim 5, characterized in that: Notches are arranged at the edge of the circular bottom block, and the notches are symmetrical notches located on the same straight line of the circular bottom block.

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