Dynamic mixing device for synthesis of polyurethane chain extender

Abstract

The utility model relates to the technical field of polyurethane chain extender production, and discloses a polyurethane chain extender synthesis dynamic mixing device which comprises a tank body, the left end face of the tank body is fixedly connected with a feeding pipe in a penetrating manner, and a stirring part is arranged in the tank body; the stirring part comprises a motor, a scraping plate, a supporting rod and a rotating shaft. According to the dynamic mixing device for synthesis of the polyurethane chain extender, by arranging the motor, the balancing weight, the stirring plate, the supporting rods, the rotating shaft, the square rod, the concentric-square-shaped frame and the spring, the motor is started, an output shaft of the motor drives the rotating shaft, the concentric-square-shaped frame and the stirring plate to rotate, the stirring plate stirs the polyurethane chain extender, and after production is finished, the rotating speed of the motor is increased; centrifugal force borne by the balancing weight is increased, the spring is lengthened, the outer surface of the stirring plate makes contact with the inner wall of the tank body, and the stirring plate scrapes and cleans the inner wall of the tank body; by arranging an elastic rod and a scraping plate, when the rotating shaft moves downwards along the outer surface of the square rod, the bottom surface of the scraping plate scrapes and cleans the inner wall of the tank body.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane chain extender production, in particular to a polyurethane chain extender synthesis dynamic mixing device. Background Art

[0002] Chain extenders, also known as chain growth agents, are substances that can react with functional groups on linear polymer chains to extend the molecular chains and increase the molecular weight. They are necessary reagents in polyurethane production and are often used to improve the mechanical properties and process properties of polyurethane, polyester and other products.

[0003] A Chinese patent discloses a polyurethane chain extender synthesis stirring device, with the publication number CN215823077U, comprising a raw material synthesis mixer, a high-speed stirring synthesis shaft and a scraper, wherein temperature heaters are arranged on both sides of the raw material synthesis mixer, the lower end of the high-speed stirring synthesis shaft is connected and installed inside the raw material synthesis mixer through a motor, a triangular stirring rack is arranged in the middle of the high-speed stirring synthesis shaft, and the number of triangular stirring racks is arranged in four, a bottom stirring rod is arranged below the high-speed stirring synthesis shaft, and the number of bottom stirring rods is arranged in two, and the scraper is connected and installed at one end of the bottom stirring rod through a spherical welding block. In the utility model, a high-temperature resistant transparent sealing cover is arranged above the raw material synthesis mixer, and the high-temperature resistant transparent sealing cover is convenient for visually observing the uniformity of the internal raw material synthesis to ensure the uniformity of the raw material synthesis.

[0004] However, it still has the following disadvantages: the device uses a motor to drive the scraper and rubber strip to rotate to clean the inner wall of the shell, but the rubber strip rubs and slides against the inner wall of the shell for a long time, which will cause the rubber strip to be seriously worn, and the cleaning effect of the device will deteriorate after long-term use. To this end, we proposed a polyurethane chain extender synthesis dynamic mixing device to solve this problem. Utility Model Content

[0005] The utility model aims to provide a polyurethane chain extender synthesis dynamic mixing device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a polyurethane chain extender synthesis dynamic mixing device, comprising a tank body, a feed pipe is fixedly connected to the left end surface of the tank body, and a stirring part is arranged inside the tank body;

[0007] The stirring part includes a motor, a scraper, a support rod, and a rotating shaft. The bottom surface of the motor is fixedly connected to the top surface of the tank body. The outer surface of the bottom end of the motor output shaft rotates through the top surface of the tank body and extends into the inside of the tank body through a bearing. The top end of the support rod is hinged to the outer surface of the rotating shaft, and the outer surface of the scraper is hinged to the bottom end of the support rod.

[0008] The tank body is provided with an adjusting part inside;

[0009] The adjusting part comprises an adjusting plate and a fixing plate, wherein two fixing plates are provided, the fixing plate is fixedly sleeved on the outer surface of the rotating shaft, the adjusting plate is sleeved outside the rotating shaft, and the adjusting plate is provided between the two fixing plates.

[0010] A further improvement is that the stirring part also includes a counterweight block, a stirring plate, an elastic rod, a square rod, a return frame and a spring, the bottom surface of the motor output shaft is fixedly connected to the top surface of the square rod, the top surface of the rotating shaft is provided with a slide groove, the bottom end of the square rod extends into the interior of the slide groove and is slidably connected to the inner wall of the slide groove, and by arranging the motor, the square rod and the rotating shaft, the rotating shaft is slidably sleeved on the outer surface of the square rod, so as to facilitate the control of the height of the rotating shaft.

[0011] A further improvement is that the outer surface of the return frame and the outer surface of the rotating shaft, the inner wall of the return frame is fixedly connected with a sliding rod, the sliding sleeve on the outer surface of the sliding rod is provided with a sliding block, the outer surface of the stirring plate is fixedly connected with the outer surface of the sliding block, and by setting the return frame and the stirring plate, starting the motor, driving the return frame and the stirring plate to rotate, so that the stirring plate stirs the raw materials.

[0012] A further improvement is that one end of the spring is fixedly connected to the outer surface of the slider, the other end of the spring is fixedly connected to the inner wall of the return frame, and the bottom surface of the counterweight block is fixedly connected to the top surface of the slider. By arranging the spring and the counterweight block, the motor speed is increased, the centrifugal force on the counterweight block is increased, the outer surface of the stirring plate is in contact with the inner wall of the tank, and the stirring plate scrapes and cleans the inner wall of the tank.

[0013] A further improvement is that the outer surface of the scraper and the outer surface of the rotating shaft are respectively fixedly connected to the outer surface of the elastic rod on the adjacent side, and the other end of the elastic rod is fixedly connected to the outer surface of the support rod. By arranging the scraper and the elastic rod, when the rotating shaft moves downward, the scraper scrapes the inner wall of the tank body.

[0014] A further improvement is that the adjustment part also includes a hydraulic rod and a roller, the bottom surface of the hydraulic rod output rod is fixedly connected to the top surface of the adjustment plate, and the outer surface of the top end of the hydraulic rod is fixedly penetrated through the inner wall of the tank body and extends to the top of the tank body. By arranging the hydraulic rod, the fixed plate and the adjustment plate, the extension of the hydraulic rod is controlled to drive the fixed plate, the rotating shaft and the stirring plate to move downward, thereby expanding the stirring range of the stirring plate.

[0015] A further improvement is that a through hole is opened in the top block of the fixed plate, and the outer surface of the roller is rotatably connected to the inner wall of the fixed plate through a bearing seat. By arranging the roller, the relative rotation of the fixed plate and the adjusting plate is facilitated.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the polyurethane chain extender synthesis dynamic mixing device is provided with a motor, a counterweight, a stirring plate, a support rod, a rotating shaft, a square rod, a return frame and a spring, the motor is started, and the motor output shaft drives the rotating shaft, the return frame and the stirring plate to rotate, so that the stirring plate stirs the polyurethane chain extender; after the production is completed, the motor speed is increased to increase the centrifugal force on the counterweight, so that the spring is stretched, so that the outer surface of the stirring plate contacts the inner wall of the tank, and the stirring plate scrapes and cleans the inner wall of the tank; by providing an elastic rod and a scraper, when the rotating shaft moves downward along the outer surface of the square rod, the bottom surface of the scraper scrapes and cleans the inner wall of the tank; by providing a hydraulic rod, an adjusting plate, a roller and a fixing plate, the extension of the hydraulic rod is controlled, and the output shaft of the hydraulic rod pushes the adjusting plate and the fixing plate to move downward, so that the stirring plate moves downward, thereby improving the stirring effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a sectional view of the three-dimensional structure of the utility model;

[0019] Figure 3 It is a partial cross-sectional view of the three-dimensional structure of the utility model;

[0020] Figure 4 for Figure 3 A magnified view of the structure at center;

[0021] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle.

[0022] In the figure: 1 tank body, 2 mixing device, 21 stirring part, 22 adjusting part, 211 hydraulic rod, 212 adjusting plate, 213 roller, 214 fixing plate, 221 motor, 222 counterweight, 223 stirring plate, 224 supporting rod, 225 elastic rod, 226 scraper, 227 rotating shaft, 228 square rod, 229 return frame, 220 spring. DETAILED DESCRIPTION

[0023] 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 in 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.

[0024] See also Figure 1-Figure 5The utility model provides a technical solution: a polyurethane chain extender synthesis dynamic mixing device, comprising a tank body 1, a feed pipe is fixedly connected to the left end surface of the tank body 1, and a stirring part 22 is arranged inside the tank body 1;

[0025] The stirring part 22 includes a motor 221, a scraper 226, a support rod 224, and a rotating shaft 227. The bottom surface of the motor 221 is fixedly connected to the top surface of the tank body 1. The outer surface of the bottom end of the output shaft of the motor 221 rotates through the top surface of the tank body 1 and extends to the inside of the tank body 1 through a bearing. The top of the support rod 224 is hinged to the outer surface of the rotating shaft 227. The outer surface of the scraper 226 is hinged to the bottom end of the support rod 224. The stirring part 22 also includes a counterweight block 222, a stirring plate 223, and an elastic rod 225. , square rod 228, return frame 229 and spring 220, the bottom surface of the output shaft of motor 221 is fixedly connected with the top surface of square rod 228, the top surface of rotating shaft 227 is provided with a slide groove, the bottom end of square rod 228 extends into the inside of the slide groove and is slidably connected with the inner wall of the slide groove, the outer surface of return frame 229 is connected with the outer surface of rotating shaft 227, the inner wall of return frame 229 is fixedly connected with a slide rod, the outer surface of slide rod is slidably sleeved with a slide block, the outer surface of stirring plate 223 is fixedly connected with the outer surface of slide block;

[0026] One end of the spring 220 is fixedly connected to the outer surface of the slider, the other end of the spring 220 is fixedly connected to the inner wall of the return frame 229, and the bottom surface of the counterweight block 222 is fixedly connected to the top surface of the slider. By setting the motor 221, the counterweight block 222, the stirring plate 223, the support rod 224, the rotating shaft 227, the square rod 228, the return frame 229 and the spring 220, the motor 221 is started, and the output shaft of the motor 211 drives the rotating shaft 227, the return frame 229 and the stirring plate 223 to rotate, so that the stirring plate 223 stirs the polyurethane chain extender. After the production is completed, the motor speed 211 is increased to increase the centrifugal force on the counterweight block 222, so that the spring 220 is stretched, so that the outer surface of the stirring plate 223 contacts the inner wall of the tank body 1, so that the stirring plate 223 scrapes and cleans the inner wall of the tank body 1;

[0027] The outer surface of the scraper 226 and the outer surface of the rotating shaft 227 are respectively fixedly connected to the outer surface of the elastic rod 225 on the adjacent side, and the other end of the elastic rod 225 is fixedly connected to the outer surface of the support rod 224. By setting the elastic rod 225 and the scraper 226, when the rotating shaft 227 moves downward along the outer surface of the square rod 228, the bottom surface of the scraper 226 scrapes and cleans the inner wall of the tank body 1;

[0028] An adjusting portion 21 is provided inside the tank body 1;

[0029] The adjusting part 21 includes an adjusting plate 212 and a fixing plate 214. Two fixing plates 214 are provided. The fixing plates 214 are fixedly sleeved on the outer surface of the rotating shaft 227. The adjusting plate 212 is sleeved outside the rotating shaft 227. The adjusting plate 212 is arranged between the two fixing plates 214. The adjusting part 21 also includes a hydraulic rod 211 and a roller 213. The bottom surface of the output rod of the hydraulic rod 211 is fixedly connected to the top surface of the adjusting plate 212. The outer surface of the top end of the hydraulic rod 211 is fixedly penetrated through the inner wall of the tank body 1 and extends to the top of the tank body 1.

[0030] A through hole is provided in the top block of the fixed plate 214, and the outer surface of the roller 213 is rotatably connected to the inner wall of the fixed plate 214 through a bearing seat. By setting a hydraulic rod 211, an adjusting plate 212, a roller 213 and a fixed plate 214, the extension of the hydraulic rod 211 is controlled, and the output shaft of the hydraulic rod 211 pushes the adjusting plate 212 and the fixed plate 214 to move downward, so that the stirring plate 223 moves downward, thereby improving the stirring effect of the device.

[0031] When in use, start the motor 221, the output shaft of the motor 221 drives the square rod 228 and the rotating shaft 227 to rotate, the rotating shaft 227 drives the return frame 229 and the stirring plate 223 to rotate, so that the stirring plate 223 stirs the raw materials, the hydraulic rod 211 is controlled to extend, the output shaft of the hydraulic rod 211 pushes the adjusting plate 212 to move downward, the adjusting plate 212 drives the fixing plate 214 to move downward, the fixing plate 214 drives the rotating shaft 227 and the stirring plate 223 to move downward, after the production is completed, increase the speed of the motor 221, and control the hydraulic rod 211 to extend at the same time, so that the rotating shaft 227 moves to the bottom, so that the scraper 226 scrapes and cleans the inner wall of the tank body 1, and at the same time, the centrifugal force on the counterweight block 222 increases, and the counterweight block 222 drives the slider and the stirring plate 223 to move, so that the stirring plate 223 scrapes and cleans the inner wall of the tank body 1.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane chain extender synthesis dynamic mixing device, comprising a tank (1), characterized in that: A feed pipe is fixedly connected to the left end surface of the tank body (1), and a stirring portion (22) is arranged inside the tank body (1); The stirring portion (22) comprises a motor (221), a scraper (226), a support rod (224) and a rotating shaft (227); the bottom surface of the motor (221) is fixedly connected to the top surface of the tank body (1); the outer surface of the bottom end of the output shaft of the motor (221) rotates through the top surface of the tank body (1) through a bearing and extends into the interior of the tank body (1); the top end of the support rod (224) is hinged to the outer surface of the rotating shaft (227); and the outer surface of the scraper (226) is hinged to the bottom end of the support rod (224); An adjusting portion (21) is provided inside the tank body (1); The adjusting portion (21) comprises an adjusting plate (212) and a fixing plate (214), two fixing plates (214) are provided, the fixing plate (214) is fixedly sleeved on the outer surface of the rotating shaft (227), the adjusting plate (212) is sleeved outside the rotating shaft (227), and the adjusting plate (212) is provided between the two fixing plates (214).

2. A polyurethane chain extender synthesis dynamic mixing device according to claim 1, characterized in that: The stirring portion (22) further comprises a counterweight (222), a stirring plate (223), an elastic rod (225), a square rod (228), a return frame (229) and a spring (220); the bottom surface of the output shaft of the motor (221) is fixedly connected to the top surface of the square rod (228); a slide groove is provided on the top surface of the rotating shaft (227); the bottom end of the square rod (228) extends into the interior of the slide groove and is slidably connected to the inner wall of the slide groove.

3. A polyurethane chain extender synthesis dynamic mixing device according to claim 2, characterized in that: The outer surface of the return frame (229) is connected to the outer surface of the rotating shaft (227); the inner wall of the return frame (229) is fixedly connected with a sliding rod; the outer surface of the sliding rod is slidably sleeved with a sliding block; the outer surface of the stirring plate (223) is fixedly connected to the outer surface of the sliding block.

4. A polyurethane chain extender synthesis dynamic mixing device according to claim 3, characterized in that: One end of the spring (220) is fixedly connected to the outer surface of the slider, the other end of the spring (220) is fixedly connected to the inner wall of the return frame (229), and the bottom surface of the counterweight block (222) is fixedly connected to the top surface of the slider.

5. A polyurethane chain extender synthesis dynamic mixing device according to claim 2, characterized in that: The outer surface of the scraper (226) and the outer surface of the rotating shaft (227) are respectively fixedly connected to the outer surface of the elastic rod (225) on the adjacent side, and the other end of the elastic rod (225) is fixedly connected to the outer surface of the support rod (224).

6. A polyurethane chain extender synthesis dynamic mixing device according to claim 1, characterized in that: The adjusting portion (21) further comprises a hydraulic rod (211) and a roller (213); the bottom surface of the output rod of the hydraulic rod (211) is fixedly connected to the top surface of the adjusting plate (212); the top outer surface of the hydraulic rod (211) is fixedly penetrated through the inner wall of the tank body (1) and extends to the top of the tank body (1).

7. A polyurethane chain extender synthesis dynamic mixing device according to claim 6, characterized in that: The top block of the fixing plate (214) is provided with a through hole, and the outer surface of the roller (213) is rotatably connected to the inner wall of the fixing plate (214) via a bearing seat.

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