Polyurethane foaming stirring device

Abstract

The utility model relates to the technical field of stirring devices and discloses a polyurethane foaming stirring device which comprises a tank body, a main shaft is rotationally connected to the outer wall of the middle of the top of the tank body, a stirring assembly is installed on the outer wall, extending into the tank body, of the main shaft, and the stirring assembly comprises two connecting rods fixedly connected to the main shaft and located on the outer wall of an inner cavity of the tank body; two connecting rods are arranged on the main shaft, two spiral belts are fixedly connected to the outer walls, close to the two ends, of the two connecting rods, a spiral blade is fixedly connected to the outer wall, located between the two connecting rods, of the main shaft, and threads of the spiral blade and threads of the two spiral belts are oppositely arranged. The raw materials close to the middle in the tank body can be stirred upwards by the spiral blades, and the raw materials close to the inner wall in the tank body can be stirred downwards by the two spiral belts, so that circulation is formed, and sediments at the bottom of the tank body can be quickly and uniformly mixed.

Description

Technical Field

[0001] This application relates to the technical field of stirring devices, and in particular to a polyurethane foaming stirring device. Background Art

[0002] "A high-efficiency stirring device for a polyurethane foaming machine" is disclosed in "CN 216968304 U", which includes a tank body and a stirring mechanism rotatably installed at the top inside the tank body... The impellers on the two impeller agitators are arranged staggeredly. This utility model repeatedly immerses the feeding hopper into the raw materials to extract a small amount of raw materials and then stirs them through the stirring mechanism. Since there is little raw material in the feeding hopper, the resistance of the stirring mechanism during the stirring process is small, which can effectively prevent the stirring mechanism from bending and improve the stirring and mixing effect.

[0003] In the above patent, when a large amount of raw materials are added to the tank body for stirring, by repeatedly immersing the feeding hopper into the raw materials and then stirring a small amount repeatedly, although this method can reduce the resistance of the raw materials to the stirring mechanism, it also reduces the overall stirring efficiency, thus affecting the production efficiency of polyurethane. Therefore, a polyurethane foaming stirring device is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to solve the problem that when a large amount of raw materials are added to the tank body for stirring, by repeatedly immersing the feeding hopper into the raw materials and then stirring a small amount repeatedly, although this method can reduce the resistance of the raw materials to the stirring mechanism, it also reduces the overall stirring efficiency, thus affecting the production efficiency of polyurethane, this application provides a polyurethane foaming stirring device.

[0005] A polyurethane foaming stirring device provided by this application adopts the following technical solutions:

[0006] A polyurethane foaming stirring device includes a tank body. The outer wall of the middle of the top of the tank body is rotatably connected to a main shaft. The outer wall of the main shaft extending into the tank body is provided with a stirring assembly. The outer wall of the top of the tank body is provided with a driving mechanism for driving the stirring assembly to rotate.

[0007] The stirring assembly includes two connecting rods fixedly connected to the outer wall of the main shaft inside the tank cavity. The two connecting rods are arranged in parallel. The outer walls of the two connecting rods near both ends are fixedly connected with two spiral bands. The spiral directions of the two spiral bands are the same. The outer wall of the main shaft between the two connecting rods is fixedly connected with a spiral blade. The spiral blade is arranged in the opposite direction to the threads of the two spiral bands.

[0008] Both ends of the two connecting rods are provided with two scraping plates through an elastic connection mechanism. The scraping plates are inclined and fit with the inner cavity of the tank body.

[0009] Preferably, the driving mechanism includes a speed reducer and a servo motor fixedly installed on the outer wall of the top of the tank body. The input shaft of the speed reducer is connected to the output shaft of the servo motor through a coupling, and the output shaft of the speed reducer is fixedly connected to the top end of the main shaft.

[0010] Preferably, the elastic connection mechanism includes a plurality of movable grooves opened at both ends of the connecting rod. The inner wall of the movable groove is slidably connected with a movable block, and a spring is further installed inside the movable groove. The spring is located on the outer wall of the movable block facing the main shaft.

[0011] Preferably, a telescopic column is fixedly connected to the outer wall of the movable block away from the spring. Each upper and lower pair of the telescopic columns penetrates through the connecting rod at the end away from the movable block and is fixedly connected to the upper and lower ends of the scraping plate.

[0012] Preferably, a feed inlet is provided on the outer wall of the top of the tank body. The feed inlet is communicated with the inner cavity of the tank body, and a sealing cover is hinged on the outer wall of the top of the feed inlet.

[0013] Preferably, a plurality of support legs are fixedly connected to the outer wall of the bottom of the tank body. The plurality of support legs are evenly distributed in an equidistant circumferential array.

[0014] Preferably, a discharge port is provided on the outer wall of the middle of the bottom of the tank body.

[0015] In summary, the present application includes the following beneficial technical effects:

[0016] 1. The driving mechanism drives the main shaft and the stirring assembly on its outer wall to stir the raw materials in the tank body. Compared with the prior art, the spiral blades and the two spiral belts in the stirring assembly form a large-area hollow shape, which can effectively reduce the contact area between the stirring structure and the raw materials, reduce the resistance. At the same time, the spiral blades and the spiral belts are spiral, which is further beneficial to move and rotate in the raw materials, and can realize full stirring of high-viscosity raw materials. While preventing the stirring assembly from bending due to large resistance, it can stir a large amount of raw materials in the tank body without repeatedly stirring a small amount of raw materials. The operation is simple and the stirring efficiency is high;

[0017] 2. In the stirring assembly, the spiral directions of the spiral blades and the two spiral belts are opposite. Therefore, during the stirring process, the raw materials near the middle in the tank body can be stirred upward by the spiral blades, while the raw materials near the inner wall in the tank body are stirred downward by the two spiral belts, thus forming a cycle, which can quickly mix the sediment at the bottom of the tank body evenly;

[0018] 3. While the stirring assembly is operating, it also drives two scraping plates to rotate in contact with the inner wall of the tank. Through the mutual cooperation of the elastic connection mechanism, the scraping plates can scrape the inner wall of the tank to the maximum extent without making rigid contact with the inner wall of the tank, causing abnormal wear. Therefore, the two scraping plates can quickly scrape and stir the raw materials attached to the inner wall of the tank, improving the comprehensiveness of stirring. Description of the Drawings

[0019] Figure 1 is the overall schematic diagram of the application embodiment;

[0020] Figure 2 is the partial cross-sectional view of the application embodiment;

[0021] Figure 3 is the partial structural schematic diagram of the application embodiment;

[0022] Figure 4 is Figure 3 the enlarged schematic diagram of the structure at A in

[0023] Description of the reference numerals: 1, tank body; 2, main shaft; 3, connecting rod; 4, spiral blade; 5, spiral belt; 6, movable groove; 7, movable block; 8, spring; 9, telescopic column; 10, scraping plate; 11, support leg; 12, discharge port; 13, feed port; 14, sealing cover; 15, speed reducer; 16, servo motor; 17, coupling. Detailed Description of the Embodiment

[0024] The following is a further detailed description of the present application in conjunction with the attached Figures 1-4 drawings.

[0025] The embodiment of the present application discloses a polyurethane foam stirring device. Referring to Figures 1-4 , a polyurethane foam stirring device includes a tank body 1. The outer wall of the middle of the top of the tank body 1 is rotatably connected with a main shaft 2. The outer wall of the main shaft 2 extending into the tank body 1 is provided with a stirring assembly. The outer wall of the top of the tank body 1 is provided with a driving mechanism for driving the stirring assembly to rotate;

[0026] The stirring assembly includes two connecting rods 3 fixedly connected to the outer wall of the main shaft 2 located in the inner cavity of the tank body 1. The two connecting rods 3 are arranged in parallel. The outer walls of the two connecting rods 3 near both ends are fixedly connected with two spiral belts 5. The thread directions of the two spiral belts 5 are the same. The outer wall of the main shaft 2 located between the two connecting rods 3 is fixedly connected with a spiral blade 4. The thread of the spiral blade 4 is opposite to that of the two spiral belts 5;

[0027] Both ends of the two connecting rods 3 are provided with two scraping plates 10 through an elastic connection mechanism. The scraping plates 10 are inclined and are in contact with the inner cavity of the tank body 1. The inclined arrangement of the two scraping plates 10 can reduce the resistance of the scraping plates 10 in the raw materials, facilitating the movement and rotation of the scraping plates 10 in the tank body 1.

[0028] The driving mechanism includes a speed reducer 15 and a servo motor 16 fixedly installed on the outer wall of the top of the tank body 1. The input shaft of the speed reducer 15 is connected to the output shaft of the servo motor 16 through a coupling 17, and the output shaft of the speed reducer 15 is fixedly connected to the top end of the main shaft 2.

[0029] The elastic connection mechanism includes a plurality of movable slots 6 opened at both ends of the connecting rod 3. The inner wall of the movable slot 6 is slidably connected with a movable block 7. A spring 8 is also installed inside the movable slot 6. The spring 8 is located on the outer wall of the movable block 7 facing the main shaft 2. One end of the telescopic column 9 is fixedly connected to the outer wall of the movable block 7 away from the spring 8. Every two upper and lower telescopic columns 9 penetrate through the connecting rod 3 and are fixedly connected to the upper and lower ends of the scraper 10.

[0030] A feed inlet 13 is provided on the outer wall of the top of the tank body 1. The feed inlet 13 is communicated with the inner cavity of the tank body 1. A sealing cover 14 is hinged on the outer wall of the top of the feed inlet 13. The feed inlet 13 is used to add raw materials into the tank body 1, and the sealing cover 14 is used to seal the feed inlet 13 to prevent the raw materials from splashing out from the feed inlet 13.

[0031] A plurality of support legs 11 are fixedly connected to the outer wall of the bottom of the tank body 1. The plurality of support legs 11 are evenly distributed in an equidistant circumferential array, and the plurality of support legs 11 can evenly disperse and support the gravity of the tank body 1.

[0032] A discharge port 12 is provided on the outer wall of the middle of the bottom of the tank body 1. A valve is installed on the inner wall of the discharge port 12. The opening and closing state of the discharge port 12 is controlled by the valve, which is convenient for controlling the discharge of the raw materials in the tank body 1.

[0033] The implementation principle of a polyurethane foam stirring device in an embodiment of the present application is as follows: When in use, the sealing cover 14 is opened, and the raw materials are added into the tank body 1 through the feed inlet 13. The sealing cover 14 is closed. Through the driving mechanism, the servo motor 16 is started. The output shaft of the servo motor 16 transmits power to the speed reducer 15 through the coupling 17. The speed reducer 15 can reduce the power output by the servo motor 16 and increase the torque, and drives the main shaft 2 to rotate through the output shaft. At this time, the main shaft 2 drives the two connecting rods 3 to rotate, and the two connecting rods 3 drive the stirring assembly to stir the raw materials;

[0034] In the stirring assembly, the spiral blades 4 and the two spiral bands 5 form a large-area hollow shape, which can effectively reduce the contact area between the stirring structure and the raw materials, reduce the resistance. At the same time, the spiral blades 4 and the spiral bands 5 are spiral-shaped, which is further beneficial to move and rotate in the raw materials, and can realize full stirring of high-viscosity raw materials. While preventing the stirring assembly from bending due to large resistance, it can stir a large amount of raw materials in the tank body 1;

[0035] When the stirring assembly rotates, since the spiral directions of the spiral blade 4 and the two spiral belts 5 are opposite, during the stirring process, the raw materials near the middle of the tank body 1 can be stirred upward by the spiral blade 4, while the raw materials near the inner wall of the tank body 1 are stirred downward by the two spiral belts 5, thereby forming a cycle, which can quickly mix the sediment at the bottom of the tank body 1 and improve the stirring efficiency;

[0036] When the two connecting rods 3 rotate, the two scrapers 10 will also be driven to rotate in contact with the inner wall of the tank body 1. Through the elastic connection mechanism, the elastic force generated by the spring 8 can squeeze the movable block 7, so that the movable block 7 always slides outward, and then the movable block 7 abuts against the scraper 10 through the telescopic column 9, which will make the scraper 10 abut against the inner wall of the tank body 1 to the maximum extent while preventing the scraper 10 from rigidly contacting the inner wall of the tank body 1 to cause abnormal wear. Therefore, the two scrapers 10 can quickly scrape and stir the raw materials attached to the inner wall of the tank body 1, thereby improving the comprehensiveness of stirring;

[0037] After the stirring is completed, open the valve in the main shaft 2 to discharge the fully stirred raw materials.

[0038] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0039] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0040] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A polyurethane foaming and stirring device, comprising a tank body (1), characterized in that: The top middle outer wall of the tank body (1) is rotatably connected to a main shaft (2), the outer wall of the main shaft (2) extending into the interior of the tank body (1) is equipped with a stirring assembly, and the top outer wall of the tank body (1) is equipped with a driving mechanism for driving the stirring assembly to rotate; The stirring assembly comprises two connecting rods (3) fixedly connected to the main shaft (2) and located on the outer wall of the inner cavity of the tank body (1); the two connecting rods (3) are arranged in parallel; two spiral bands (5) are fixedly connected to the outer walls of the two connecting rods (3) near the two ends; the threads of the two spiral bands (5) are arranged in the same direction; a spiral blade (4) is fixedly connected to the outer wall of the main shaft (2) located between the two connecting rods (3); the spiral blade (4) is arranged opposite to the threads of the two spiral bands (5); Two scrapers (10) are installed at both ends of the two connecting rods (3) via an elastic connection mechanism. The scrapers (10) are arranged at an angle and fit in the inner cavity of the tank body (1).

2. A polyurethane foaming stirring device according to claim 1, characterized in that: The driving mechanism comprises a reducer (15) and a servo motor (16) fixedly mounted on the top outer wall of the tank body (1); the input shaft of the reducer (15) and the output shaft of the servo motor (16) are connected via a coupling (17); and the output shaft of the reducer (15) is fixedly connected to the top end of the main shaft (2).

3. A polyurethane foaming stirring device according to claim 1, characterized in that: The elastic connection mechanism comprises a plurality of movable grooves (6) provided at both ends of the connecting rod (3); the inner wall of the movable groove (6) is slidably connected with a movable block (7); a spring (8) is also installed inside the movable groove (6); the spring (8) is located on the outer wall of the movable block (7) on one side facing the main shaft (2).

4. A polyurethane foaming stirring device according to claim 3, characterized in that: A telescopic column (9) is fixedly connected to the outer wall of the movable block (7) at one side away from the spring (8), and each upper and lower two telescopic columns (9) and one end away from the movable block (7) penetrate the connecting rod (3) and are fixedly connected to the upper and lower ends of the scraper (10).

5. A polyurethane foaming stirring device according to claim 1, characterized in that: The top outer wall of the tank body (1) is provided with a feed inlet (13), the feed inlet (13) is communicated with the inner cavity of the tank body (1), and a sealing cover (14) is hingedly connected to the top outer wall of the feed inlet (13).

6. A polyurethane foaming stirring device according to claim 1, characterized in that: A plurality of support legs (11) are fixedly connected to the outer wall of the bottom of the tank body (1), and the plurality of support legs (11) are evenly distributed in a circular array with equal spacing.

7. A polyurethane foaming stirring device according to claim 1, characterized in that: A discharge port (12) is provided on the middle outer wall of the bottom of the tank body (1).

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