Spiral flow guide type polyurethane foaming mixing mechanism

Abstract

The utility model relates to the technical field of mixing mechanisms, and provides a spiral flow guide type polyurethane foaming mixing mechanism which comprises a mixing tank, a feeding mechanism, a supporting plate, a first mixing mechanism, a second mixing mechanism and a discharging pipe, a first cavity is formed in the top side wall of the mixing tank, the feeding mechanism is arranged on one side of the mixing tank, and a second cavity is formed in the top side wall of the mixing tank. The first material mixing mechanism is arranged between the supporting plate and the first cavity and used for primarily mixing the black materials and the white materials, and the second material mixing mechanism is arranged between the supporting plate and the inner bottom wall of the mixing tank and used for primarily mixing the white materials and the black materials. The mixing tank is used for further mixing black materials and white materials, the discharging pipe is arranged at the bottom end of the inner wall of the mixing tank in a communicating mode, a discharging control valve is installed on the discharging pipe, and by means of the technical scheme, the technical problem that in the prior art, the mixing effect of polyurethane foaming raw materials is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of mixing mechanism technology, specifically to a spiral flow-guided polyurethane foam mixing mechanism. Background Technology

[0002] The polyurethane foam mixing mechanism is the core component of polyurethane foaming equipment. Its main function is to fully and uniformly mix the various raw materials required for polyurethane foaming (usually isocyanates, i.e., "black material", and polyols, i.e., "white material", and may also include foaming agents, catalysts, surfactants and other additives) to ensure that these raw materials can undergo the expected chemical reaction, thereby forming a high-performance polyurethane foam material.

[0003] In existing technologies, the mixing of black and white materials is generally achieved using a spray gun. Black and white materials with equal flow rates are delivered at equal pressure to the nozzle of the spray gun by a plunger proportional pump. The liquid materials rotate at high speed in the nozzle orifice for closed-loop airless mixing, and the mixed material is sprayed out from the nozzle.

[0004] However, the limited space inside the spray gun makes it easy for liquid materials to be sprayed out of the spray gun without being fully mixed, which can lead to uneven mixing of black and white materials during the mixing process, thus affecting the mixing effect. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a spiral flow-guided polyurethane foam mixing mechanism to solve the technical problem of poor mixing effect of polyurethane foam raw materials in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides a spiral-guided polyurethane foam mixing mechanism, including a mixing tank. A first cavity is formed in the top side wall of the mixing tank, including a feeding mechanism, a support plate, a first mixing mechanism, a second mixing mechanism, and a discharge pipe. The feeding mechanism is disposed on one side of the mixing tank and is used to add black material and white material into the mixing tank. The support plate is fixedly disposed in the mixing tank. The first mixing mechanism is disposed between the support plate and the first cavity and is used to perform preliminary mixing of the black material and white material. The second mixing mechanism is disposed between the support plate and the inner bottom wall of the mixing tank and is used to further mix the black material and white material. The discharge pipe is connected to the bottom end of the inner wall of the mixing tank, and a discharge control valve is installed on the discharge pipe.

[0007] Preferably, the feeding mechanism includes a first storage tank, a second storage tank, a first feed pump, and a second feed pump. The first storage tank and the second storage tank are disposed on one side of the mixing tank. The first feed pump is disposed between the first storage tank and the mixing tank. The input end of the first feed pump is connected to the first storage tank, and the output end of the first feed pump is connected to the first cavity. The second feed pump is disposed between the first storage tank and the mixing tank. The input end of the second feed pump is connected to the second storage tank, and the output end of the second feed pump is connected to the first cavity.

[0008] Furthermore, the first mixing mechanism includes a guide tube, a screw rod, and a discharge port. A plurality of guide tubes are fixedly arranged in a ring at equal intervals on the support plate. The guide tubes are connected to the first cavity. A plurality of screw rods are fixedly arranged between the support plate and the inner top wall of the first cavity. The screw rods pass through the guide tubes. The discharge port is opened on one side of the support plate located on the guide tube. The discharge port is connected to the adjacent guide tube.

[0009] Furthermore, the second mixing mechanism includes a support column, scrapers, a rotating mechanism, and a mixing assembly. The support column is rotatably disposed between the support plate and the inner bottom wall of the mixing tank. Multiple scrapers are fixedly disposed on the side wall of the support column, and the scrapers are in contact with the inner wall of the mixing tank. The rotating mechanism is disposed between the support plate and the support column and is used to drive the support column to rotate. The mixing assembly is disposed on the side wall of the support column and is used to further mix the black material and the white material.

[0010] Furthermore, the mixing assembly includes a mixing rod and mixing bars, the mixing rod being rotatably disposed between the support column and the scraper, and a plurality of mixing bars being fixedly disposed on the side wall of the mixing rod.

[0011] Based on the above scheme, the rotating mechanism includes a second cavity, a first gear ring, a first gear, and a first motor. The second cavity is opened in the support plate, wherein the support column extends into the second cavity and is rotatably connected to the side wall of the second cavity. The first gear ring is fixedly disposed on the side wall of the support column. The first gear is rotatably disposed in the second cavity and meshes with the first gear ring. The first motor is mounted on the support plate, and the output end of the first motor is fixedly connected to the first gear.

[0012] Based on the above scheme, a rotating assembly is also included to drive the mixing rod to rotate. The rotating assembly includes a third cavity, a second bevel gear, and a positioning rod. The third cavity is opened inside the support column. A first bevel gear is rotatably disposed on the side wall of the third cavity near the mixing rod. The first bevel gear is fixedly connected to the mixing rod. The second bevel gear is rotatably disposed on the inner top wall of the third cavity and meshes with the first bevel gear. The positioning rod is fixedly disposed between the inner top wall of the second cavity and the second bevel gear.

[0013] Based on the above scheme, a sealing ring is fixedly provided on the side wall of the support column, and the sealing ring is in contact with the support plate.

[0014] The beneficial effects of the embodiments of this utility model are as follows:

[0015] 1. In this utility model, through the setting of the feeding mechanism, black material and white material can be filled into the first storage tank and the second storage tank respectively. Then, the black material and white material can be added into the first cavity by the operation of the first material pump and the second material pump. The liquid material flows under the operation of the first material pump and the second material pump, so that the black material and white material are initially mixed in the first cavity.

[0016] 2. In this utility model, through the setting of the first mixing mechanism, black material and white material can enter the mixing tank through the guide pipe and the discharge port. During this process, the liquid material will flow along the guide pipe. During the flow, the direction of the liquid material will change continuously. At the same time, due to the action of the screw, the liquid material will also generate rotational motion. This rotation and change of direction enable the liquid material to be mixed and guided in the guide pipe.

[0017] 3. In this utility model, the second mixing mechanism facilitates further mixing of black and white materials by moving the mixing rod and mixing bar. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a spiral-guided polyurethane foam mixing mechanism in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the mixing tank in the embodiment;

[0021] Figure 3 for Figure 1 A cross-sectional structural schematic diagram of the first mixing mechanism in the embodiment;

[0022] Figure 4 for Figure 1 A cross-sectional structural schematic diagram of the second mixing mechanism in the embodiment;

[0023] In the diagram: 1. Mixing tank; 2. First cavity; 3. Support plate; 4. Discharge pipe; 5. First storage tank; 6. Second storage tank; 7. First material pump; 8. Guide pipe; 9. Screw rod; 10. Discharge port; 11. Support column; 12. Scraper; 13. Mixing rod; 14. First gear ring; 15. First gear; 16. First motor; 17. First bevel gear; 18. Second bevel gear; 19. Positioning rod. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1-4 As shown, a spiral-guided polyurethane foam mixing mechanism according to an embodiment of the present invention is illustrated. It includes a mixing tank 1, with a first cavity 2 formed in the top side wall of the mixing tank 1. The mixing tank 1 includes a feeding mechanism, a support plate 3, a first mixing mechanism, a second mixing mechanism, and a discharge pipe 4. The feeding mechanism is located on one side of the mixing tank 1 and is used to add black and white materials into the mixing tank 1. The support plate 3 is fixedly installed inside the mixing tank 1. The first mixing mechanism is located between the support plate 3 and the first cavity 2 and is used for preliminary mixing of the black and white materials. The second mixing mechanism is located between the support plate 3 and the inner bottom wall of the mixing tank 1 and is used for further mixing of the black and white materials. The discharge pipe 4 is connected to the bottom end of the inner wall of the mixing tank 1, and a discharge control valve is installed on the discharge pipe 4.

[0031] Reference Figure 1The feeding mechanism includes a first storage tank 5, a second storage tank 6, a first feed pump 7, and a second feed pump. The first storage tank 5 and the second storage tank 6 are located on one side of the mixing tank 1. The first feed pump 7 is located between the first storage tank 5 and the mixing tank 1. The input end of the first feed pump 7 is connected to the first storage tank 5, and the output end of the first feed pump 7 is connected to the first cavity 2. The second feed pump is located between the first storage tank 5 and the mixing tank 1. The input end of the second feed pump is connected to the second storage tank 6, and the output end of the second feed pump is connected to the first cavity 2. Specifically, black material and white material can be filled into the first storage tank 5 and the second storage tank 6 respectively. The black material and white material can be added into the first cavity 2 by the operation of the first feed pump 7 and the second feed pump. The liquid material flows under the operation of the first feed pump 7 and the second feed pump, so that the black material and white material are initially mixed in the first cavity 2.

[0032] Reference Figure 2 and Figure 3 The first mixing mechanism includes a guide pipe 8, a screw rod 9, and a discharge port 10. Multiple guide pipes 8 are fixedly arranged in a ring at equal intervals on the support plate 3. The guide pipes 8 are connected to the first cavity 2. Multiple screw rods 9 are fixedly arranged between the support plate 3 and the inner top wall of the first cavity 2. The screw rods 9 pass through the guide pipes 8. The support plate 3 has a discharge port 10 on one side of the guide pipes 8. The discharge port 10 is connected to the nearby guide pipes 8. Specifically, black material and white material can enter the mixing tank 1 through the guide pipes 8 and the discharge port 10. During this process, the liquid material will flow along the guide pipes 8. During the flow, the direction of the liquid material will change continuously. At the same time, due to the action of the screw rods 9, the liquid material will also generate rotational motion. This rotation and change of direction enable the liquid material to be mixed and guided in the guide pipes 8.

[0033] Reference Figures 2-4The second mixing mechanism includes a support column 11, a scraper 12, a rotating mechanism, and a mixing assembly. The support column 11 is rotatably disposed between the support plate 3 and the inner bottom wall of the mixing tank 1. Multiple scrapers 12 are fixedly disposed on the side wall of the support column 11, and the scrapers 12 are in contact with the inner wall of the mixing tank 1. The rotating mechanism is disposed between the support plate 3 and the support column 11 and is used to drive the support column 11 to rotate. The mixing assembly is disposed on the side wall of the support column 11 and is used to further mix the black and white materials. The mixing assembly includes a mixing rod 13 and mixing bars. The mixing rod 13 is rotatably disposed between the support column 11 and the scraper 12. Multiple mixing bars are fixedly disposed on the side wall of the mixing rod 13. The rotating mechanism includes a second cavity, a first gear ring 14, a first gear 15, and a first motor 16. A cavity is formed within a support plate 3. A support column 11 extends into the second cavity and is rotatably connected to the side wall of the second cavity. A first gear ring 14 is fixedly mounted on the side wall of the support column 11. A first gear 15 is rotatably mounted within the second cavity and meshes with the first gear ring 14. A first motor 16 is mounted on the support plate 3, and the output end of the first motor 16 is fixedly connected to the first gear 15. Specifically, the operation of the first motor 16 can drive the first gear 15 to rotate. Simultaneously, the meshing of the first gear 15 with the first gear ring 14 drives the support column 11 to rotate, thereby driving the mixing rod 13, the mixing bar, and the scraper 12 to move around the support column 11. This facilitates the mixing of liquid materials through the movement of the mixing rod 13, the mixing bar, and the scraper 12.

[0034] Reference Figure 4 It also includes a rotating assembly for driving the mixing rod 13 to rotate. The rotating assembly includes a third cavity, a second bevel gear 18, and a positioning rod 19. The third cavity is opened inside the support column 11. A first bevel gear 17 is rotatably mounted on the side wall of the third cavity near the mixing rod 13. The first bevel gear 17 is fixedly connected to the mixing rod 13. The second bevel gear 18 is rotatably mounted on the inner top wall of the third cavity and meshes with the first bevel gear 17. The positioning rod 19 is fixedly mounted between the inner top wall of the second cavity and the second bevel gear 18. A sealing ring is fixedly mounted on the side wall of the support column 11 and contacts the support plate 3. Specifically, during the rotation of the support column 11, the first bevel gear 17 can be driven to move around the second bevel gear 18. At the same time, the meshing of the first bevel gear 17 and the second bevel gear 18 drives the first bevel gear 17 and the mixing rod 13 to rotate, thereby further improving the mixing efficiency.

[0035] In this embodiment, during use, the operator fills the first storage tank 5 and the second storage tank 6 with black material and white material respectively. The black and white materials are then added to the first cavity 2 by the operation of the first and second pumps. The liquid flows under the operation of the first and second pumps, causing initial mixing of the black and white materials within the first cavity 2. Afterwards, the black and white materials enter the mixing tank 1 through the guide pipe 8 and the discharge port 10. During this process, the liquid flows along the guide pipe 8, and its direction changes continuously. Simultaneously, due to the action of the screw rod 9, the liquid also rotates. This rotation and change of direction allow the liquid to be mixed and guided within the guide pipe 8. The operator then controls the first motor 16 to operate. The operation of the first motor 16 drives the first gear 15 to rotate. Simultaneously, the meshing of the first gear 15 with the first gear ring 14 drives the support column 11 to rotate, thereby causing the mixing rod 13, mixing bar, and scraper 12 to move around the support column 11. Thus, the movement of the mixing rod 13, mixing bar, and scraper 12 achieves mixing of the liquid material. At the same time, during the rotation of the support column 11, the first bevel gear 17 can be driven to move around the second bevel gear 18. Simultaneously, the meshing of the first bevel gear 17 and the second bevel gear 18 drives the first bevel gear 17 and the mixing rod 13 to rotate, thereby further improving the mixing efficiency. Finally, the liquid material can be discharged through the discharge pipe 4.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A helical flow guiding polyurethane foaming mixing mechanism, comprising a mixing tank (1), a first cavity (2) is opened in the top side wall of the mixing tank (1), characterized in that, The utility model relates to a kind of black and white material mixing device, including: Feeding mechanism, the feeding mechanism is arranged in one side of the mixing tank (1), for adding black material and white material to the mixing tank (1) inside; Supporting plate (3), the supporting plate (3) is fixedly arranged in the mixing tank (1) inside; First mixing mechanism, the first mixing mechanism is arranged between the supporting plate (3) and the first cavity (2), for black material and white material are preliminarily mixed; Second mixing mechanism, the second mixing mechanism is arranged between the supporting plate (3) and the inner bottom wall of the mixing tank (1), for black material and white material are further mixed; Discharge pipe (4), the discharge pipe (4) is communicated and arranged in the bottom end of the inner wall of the mixing tank (1), and discharge control valve is installed on the discharge pipe (4).

2. The helical flow directing polyurethane foaming mixing mechanism according to claim 1, wherein, The feeding mechanism includes: First storage tank (5) and second storage tank (6), the first storage tank (5) and the second storage tank (6) are arranged in one side of the mixing tank (1); First material pump (7) and second material pump, the first material pump (7) is arranged between the first storage tank (5) and the mixing tank (1), the input end of the first material pump (7) is communicated with the first storage tank (5), the output end of the first material pump (7) is communicated with the first cavity (2), the second material pump is arranged between the first storage tank (5) and the mixing tank (1), the input end of the second material pump is communicated with the second storage tank (6), and the output end of the second material pump is communicated with the first cavity (2).

3. The helical flow directing polyurethane foaming mixing mechanism according to claim 2, wherein, The first mixing mechanism includes: Flow guide pipe (8), a plurality of the flow guide pipe (8) are fixedly arranged on the supporting plate (3) in ring shape equidistantly, and the flow guide pipe (8) is communicated with the first cavity (2); Screw rod (9), a plurality of the screw rod (9) are fixedly arranged between the supporting plate (3) and the inner top wall of the first cavity (2), and the screw rod (9) penetrates the flow guide pipe (8); Discharge port (10), the supporting plate (3) is located in one side of the flow guide pipe (8) and is provided with the discharge port (10), and the discharge port (10) is communicated with the adjacent flow guide pipe (8).

4. The helical flow directing polyurethane foaming mixing mechanism according to claim 3, wherein, The second mixing mechanism includes: Supporting column (11), the supporting column (11) is rotatably arranged between the supporting plate (3) and the inner bottom wall of the mixing tank (1); Scraper frame (12), a plurality of the scraper frame (12) are fixedly arranged on the side wall of the supporting column (11), and the scraper frame (12) is in contact with the inner wall of the mixing tank (1); Rotating mechanism, the rotating mechanism is arranged between the supporting plate (3) and the supporting column (11), for driving the supporting column (11) to rotate; Mixing assembly, the mixing assembly is arranged on the side wall of the supporting column (11), for black material and white material are further mixed.

5. The helical flow directing polyurethane foaming mixing mechanism according to claim 4, wherein, The mixing assembly includes: Mixing rod (13), the mixing rod (13) is rotatably arranged between the supporting column (11) and the scraper frame (12); Mixing stick, a plurality of the mixing stick are fixedly arranged on the side wall of the mixing rod (13).

6. A helical flow directing polyurethane foaming mixing mechanism according to claim 5, wherein, The rotating mechanism includes: A second cavity is formed in the support plate (3), wherein the support column (11) extends into the second cavity and is rotatably connected with the side wall of the second cavity; A first gear ring (14) is fixedly arranged on the side wall of the support column (11); A first gear (15) is rotatably arranged in the second cavity, and the first gear (15) is engaged with the first gear ring (14); A first motor (16) is mounted on the support plate (3), and the output end of the first motor (16) is fixedly connected with the first gear (15).

7. A helical flow directing polyurethane foaming mixing mechanism according to claim 6, wherein, Further comprising a rotating assembly for driving the mixing rod (13) to rotate, wherein the rotating assembly comprises: A third cavity is formed in the support column (11), and a first bevel gear (17) is rotatably arranged on the side wall of the third cavity close to the mixing rod (13), and the first bevel gear (17) is fixedly connected with the mixing rod (13); A second bevel gear (18) is rotatably arranged on the inner top wall of the third cavity, and the second bevel gear (18) is engaged with the first bevel gear (17); A positioning rod (19) is fixedly arranged between the inner top wall of the second cavity and the second bevel gear (18).

8. The helical flow directing polyurethane foaming mixing mechanism according to claim 7, wherein, The side wall of the support column (11) is fixedly provided with a sealing ring, and the sealing ring is in contact with the support plate (3).

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