Anti-blocking discharging device for polyurethane water-based ink processing

Abstract

The utility model discloses a kind of anti-blocking discharge devices for polyurethane water-based ink processing, including stirring drum, the top of stirring drum is fixedly connected with motor, the middle part inside stirring drum is rotatably connected with stirring paddle, the output end of motor is fixedly connected with the shaft of stirring paddle, penetrating the top of stirring drum, the side of stirring drum bottom is communicated with discharge pipe, the bottom of discharge pipe end away from stirring drum is communicated with arc tube, the side of discharge pipe is provided with the push-scrapping assembly for cleaning inside discharge pipe, the utility model is equipped with push-scrapping assembly, including alignment pipe, second scraper and push rod, can be mechanically pushed and scraped cleaning from the end of discharge pipe away from stirring drum, when operating, second scraper is pushed along pipeline inner wall by push rod, to make second scraper effectively scrape water-based ink residual deposit on pipe wall, to avoid the problem of blockage caused by adhesion, improve the cleaning efficiency and service life of discharge pipe, reduce maintenance frequency.

Description

Technical Field

[0001] This utility model relates to the technical field of polyurethane water-based ink production equipment, specifically an anti-clogging discharge device for polyurethane water-based ink processing. Background Technology

[0002] Polyurethane water-based ink is a new type of environmentally friendly ink that uses water as the dispersion medium and polyurethane as the main film-forming substance. It is widely used in printing fields such as plastic film, paper, and textiles. Compared with traditional solvent-based inks, polyurethane water-based ink has advantages such as low volatile organic compound (VOC) emissions, strong adhesion, and good flexibility, which is in line with the development trend of green environmental protection.

[0003] In the prior art, such as the "Feeding Device for Polyurethane Water-Based Ink Production" with announcement number CN221514382U, a supporting platform and a mixing tank are included. The mixing tank is located above the supporting platform, with a sealing cover on the top. A feed inlet is located on one side of the mixing tank, and a discharge outlet is located at the bottom of the other side. Telescopic cylinders are located on both sides of the top of the sealing cover. The extended ends of the telescopic cylinders pass through the sealing cover and are connected to a rotating ring. A feeding plate is rotatably connected to the outer side of the rotating ring. A transmission rod is rotatably connected to the bottom of the mixing tank. Multiple L-shaped rotating scrapers are located on the transmission rod at the bottom of the mixing tank, and multiple mixing plates are also mounted on the transmission rod. Although this technology can mix the contents of the mixing tank, ... Scraping away the polyurethane water-based ink adhering to the inner wall of the mixing tank prevents waste caused by ink buildup. However, this technology has some drawbacks in practical use: When the polyurethane water-based ink processing equipment discharges material from the mixing tank, it typically relies on the discharge pipe. However, due to the high viscosity and easy drying properties of water-based ink, some ink residue tends to remain on the inner wall of the discharge pipe after material transport, especially in areas with lower flow rates, such as bends or ends. Over time, the unremoved residue gradually forms a deposit or scale, affecting not only the smoothness of subsequent discharge but also potentially causing blockages inside the discharge pipe. Utility Model Content

[0004] The purpose of this invention is to provide an anti-clogging discharge device for polyurethane water-based ink processing, in order to solve the problem mentioned in the background art that the existing discharge pipe is prone to scaling and clogging due to water-based ink residue, making cleaning difficult and affecting discharge efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clog-resistant discharge device for polyurethane water-based ink processing, comprising a stirring drum, a motor fixedly connected to the top of the stirring drum, a stirring paddle rotatably connected to the middle of the inside of the stirring drum, the output end of the motor passing through the top of the stirring drum and fixedly connected to the shaft of the stirring paddle, a discharge pipe connected to one side of the bottom of the stirring drum, an arc-shaped pipe connected to the bottom of the discharge pipe at the end away from the stirring drum, and a scraping assembly for cleaning the inside of the discharge pipe provided on one side of the discharge pipe, the scraping assembly including an alignment pipe connected to the end of the discharge pipe away from the stirring drum, the alignment pipe being symmetrically arranged and aligned with the discharge pipe. The tube and the discharge tube are internally connected. A second scraper is slidably connected inside the alignment tube. The specifications and dimensions of the second scraper are adapted to the specifications and dimensions of the internal space of the alignment tube. A push rod is fixedly connected to one side of the second scraper. A scraping assembly for cleaning the inside of the arc-shaped tube is provided at the top of the discharge tube. The scraping assembly includes a straight tube connected to the top of the connection between the discharge tube and the alignment tube. The bottom of the straight tube is connected to the top of the arc-shaped tube. A first scraper is slidably connected inside the straight tube. The first scraper can slide along the communication structure between the straight tube and the arc-shaped tube. The specifications and dimensions of the first scraper are adapted to the specifications and dimensions of the internal space of the straight tube.

[0006] Preferably, a first connecting box is fixedly connected to one side of the discharge pipe connected to the mixing drum. One end of the first connecting box is connected to the interior of the discharge pipe. A first connecting plate is slidably engaged inside the first connecting box. A first baffle is fixedly connected to one end of the first connecting plate. The diameter of the first baffle is equal to the diameter of the interior of the discharge pipe. The internal space of the first connecting box is larger than the diameter of the first baffle. The end of the first connecting plate away from the first baffle passes through one end of the first connecting box. First positioning holes are respectively opened at the top of both ends of the first connecting box. A first insertion hole is opened at the top of the end of the first connecting plate near the first baffle. A first positioning rod is slidably connected inside the first positioning hole. When the first insertion hole moves to the position corresponding to the first positioning hole on the side near the discharge pipe, the first baffle closes the interior of the discharge pipe. The diameter of the first positioning rod is adapted to the diameter of the first insertion hole. The bottom of the first positioning rod passes through the interior of the first positioning hole and connects to the interior of the first insertion hole.

[0007] Preferably, the diameter of the alignment tube is equal to the diameter of the discharge tube, a cap is installed on one side of the alignment tube, and the end of the push rod away from the second scraper passes through the inside of the cap.

[0008] Preferably, a traction rope is fixedly connected to the bottom of the middle part of the first scraper, and a counterweight is fixedly connected to one end of the traction rope. The counterweight can move along the inside of the arc-shaped tube out of the bottom of the arc-shaped tube. The length of the traction rope is greater than the length of the arc-shaped tube. A pull rope is fixedly connected to the top of the middle part of the first scraper, and the length of the pull rope is greater than the length of the straight tube.

[0009] Preferably, a connecting cap is threaded to the top of the straight pipe, a bolt is fixedly connected to one side of the top of the straight pipe, and the end of the pull rope away from the first scraper passes through the top of the connecting cap and is wrapped around the outside of the bolt.

[0010] Preferably, a second connecting box is fixedly connected to one side of the bottom of the straight pipe, a third connecting plate is slidably engaged inside the second connecting box, a second baffle is fixedly connected to one end of the third connecting plate, the diameter of the second baffle is equal to the diameter inside the straight pipe, and a second positioning hole is respectively opened at the top of both ends of the second connecting box, and a second positioning rod is slidably connected inside the second positioning hole.

[0011] Preferably, the third connecting plate has a second insertion hole at the top of the end near the second baffle. The second baffle is located at the top of the connection between the straight pipe and the discharge pipe. When the second insertion hole moves to correspond to the position of the second positioning hole near the straight pipe, the second baffle closes the inside of the straight pipe. When the first scraper moves to the top of the straight pipe, the bottom of the counterweight is higher than the top of the second baffle. The diameter of the second positioning rod is adapted to the diameter of the second insertion hole. The bottom of the second positioning rod passes through the inside of the second positioning hole and connects with the inside of the second insertion hole.

[0012] Preferably, a third connecting box is fixedly connected to one side of the alignment tube, a second connecting plate is slidably engaged inside the third connecting box, a third baffle is fixedly connected to one end of the second connecting plate, the diameter of the third baffle is equal to the diameter inside the alignment tube, and the position of the third baffle is located on one side of the connection between the straight tube and the alignment tube.

[0013] Preferably, the top of the third connecting box and one side of the second connecting box are provided with sliding grooves, and an L-shaped plate is slidably connected inside the sliding groove. One end of the L-shaped plate is fixedly connected to the top of the second connecting plate, and the other end of the L-shaped plate is fixedly connected to one side of the third connecting plate.

[0014] Preferably, the bottom of the stirring paddle is fixedly connected to a plurality of push plates via a shaft. The push plates are arc-shaped, and the bottom of the push plates is in contact with the bottom of the mixing drum. The end of the push plate away from the stirring paddle shaft is in contact with the inner wall of the mixing drum.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by setting the scraping component, including the alignment tube, the second scraper and the push rod, mechanical scraping and cleaning can be performed from the end of the discharge pipe away from the mixing drum. During operation, the push rod pushes the second scraper forward along the inner wall of the pipe, so that the second scraper can effectively scrape off the water-based ink residue deposits on the pipe wall, thereby avoiding the clogging problem caused by adhesion, improving the cleaning efficiency and service life of the discharge pipe, and reducing the maintenance frequency.

[0016] Meanwhile, by setting an arc-shaped pipe to connect the end of the discharge pipe, it not only follows the liquid flow path and avoids dead corners, but also forms a certain flow guiding and acceleration effect in the curved structure, which increases the liquid flow rate, reduces the adhesion of residues, and helps prevent the deposition and scaling of water-based inks in the pipe.

[0017] Meanwhile, the scraper assembly is designed primarily for the arc-shaped section at the bottom of the discharge pipe. It consists of a straight pipe, a first scraper, a traction rope, a pull rope, and a counterweight. During operation, by loosening the pull rope connected to one end of the bolt, the counterweight automatically moves the first scraper downwards using its own weight. As it moves, the counterweight moves along the inside of the arc-shaped pipe to the bottom. By pulling the counterweight, the first scraper slides along the connection between the straight pipe and the arc-shaped pipe, thus cleaning the ink residue inside the arc-shaped pipe. Because the first scraper is adapted to the space of the straight pipe, it can completely scrape off the adhering substances on the pipe wall. When resetting, the pull rope can be pulled to make the first scraper, along with the counterweight, move away from the inside of the arc-shaped pipe and back into the inside of the straight pipe. This does not affect the normal discharge of material from the arc-shaped pipe and also facilitates the use of the scraper next time.

[0018] Meanwhile, baffle structures are installed in the three key areas of the discharge pipe, straight pipe and alignment pipe, including the first baffle, the second baffle, the third baffle and the matching connecting box, positioning rod and connecting plate. These baffles can close each section of the channel as needed to prevent the material from flowing out from other pipes during normal use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the discharge pipe and arc-shaped pipe structure of this utility model;

[0021] Figure 3 This is an enlarged schematic diagram of the push plate structure of this utility model;

[0022] Figure 4 This utility model Figure 2 Side view sectional structural schematic diagram;

[0023] Figure 5This is a side cross-sectional view of the straight pipe section of this utility model.

[0024] Figure 6 This is a side view sectional diagram of the alignment tube and discharge tube of this utility model.

[0025] In the diagram: 1. Mixing drum; 2. Motor; 3. Mixing paddle; 4. Push plate; 5. Discharge pipe; 6. Arc-shaped pipe; 7. Straight pipe; 8. Alignment pipe; 9. First connecting box; 10. First positioning rod; 11. First positioning hole; 12. First baffle; 13. First connecting plate; 14. Connecting cap; 15. Counterweight; 16. Traction rope; 17. First scraper; 18. Bolt; 19. Pull rope; 20. Second baffle; 21. Second connecting box; 22. Second positioning hole; 23. Second positioning rod; 24. L-shaped plate; 25. Third baffle; 26. Second connecting plate; 27. Second scraper; 28. Push rod; 29. ​​Cap; 30. Third connecting plate; 31. Third connecting box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Example 1

[0030] Please see Figures 1-6This utility model provides an embodiment of an anti-clogging discharge device for polyurethane water-based ink processing, comprising a mixing drum 1, a motor 2 fixedly connected to the top of the mixing drum 1, a stirring paddle 3 rotatably connected to the middle of the mixing drum 1, the output end of the motor 2 passing through the top of the mixing drum 1 and fixedly connected to the shaft of the stirring paddle 3, a discharge pipe 5 connected to one side of the bottom of the mixing drum 1, an arc-shaped pipe 6 connected to the bottom of the discharge pipe 5 away from the mixing drum 1, and a scraping assembly for cleaning the inside of the discharge pipe 5 provided on one side of the discharge pipe 5, the scraping assembly including an alignment pipe 8 connected to the end of the discharge pipe 5 away from the mixing drum 1, the alignment pipe 8 being symmetrically arranged with the discharge pipe 5, and the alignment pipe 8 and the discharge pipe... The internal structure of the discharge pipe 5 is connected. The internal structure of the alignment pipe 8 is slidably connected to a second scraper 27. The size of the second scraper 27 is adapted to the size of the internal space of the alignment pipe 8. A push rod 28 is fixedly connected to one side of the second scraper 27. The top of the discharge pipe 5 is provided with a scraping assembly for cleaning the inside of the arc-shaped pipe 6. The scraping assembly includes a straight pipe 7 connected to the top of the connection between the discharge pipe 5 and the alignment pipe 8. The bottom of the straight pipe 7 is connected to the top of the arc-shaped pipe 6. The internal structure of the straight pipe 7 is slidably connected to a first scraper 17. The first scraper 17 can slide along the communication structure between the straight pipe 7 and the arc-shaped pipe 6. The size of the first scraper 17 is adapted to the size of the internal space of the straight pipe 7.

[0031] By connecting the end of the discharge pipe 5 to the arc-shaped pipe 6, not only can the liquid flow path be followed and dead corners be avoided, but a certain flow guiding and acceleration effect can also be formed in the curved structure to increase the liquid flow rate, reduce the adhesion of residues, and help prevent the deposition and scaling of water-based inks in the pipe.

[0032] The diameter of the alignment tube 8 is equal to the diameter of the discharge tube 5. A cap 29 is installed on one side of the alignment tube 8, and the end of the push rod 28 away from the second scraper 27 passes through the inside of the cap 29.

[0033] The scraping assembly, including the alignment tube 8, the second scraper 27, and the push rod 28, enables mechanical scraping and cleaning from the end of the discharge pipe 5 away from the mixing drum 1. During operation, the push rod 28 pushes the second scraper 27 along the inner wall of the pipe. When the second scraper 27 moves into the interior of the discharge pipe 5, it effectively scrapes away residual water-based ink deposits from the pipe wall, thus preventing blockages caused by adhesion, improving the cleaning efficiency and service life of the discharge pipe 5, and reducing maintenance frequency. The cap 29 also facilitates subsequent cleaning. The second scraper 27 is removed from one end of the alignment tube 8 by removing the cap 29, and the second scraper 27 is taken out from the inside of the alignment tube 8, which facilitates the cleaning of the second scraper 27. At the same time, when the second scraper 27 moves to one side of the mixing drum 1, the scale inside the discharge pipe 5 enters the inside of the mixing drum 1. At the same time, when the second scraper 27 is pulled back away from the side of the mixing drum 1, the residual scale will flow out from the inside of the arc-shaped tube 6. It should be noted that the scale remaining in the discharge pipe 5 inside the mixing drum 1 can be cleaned away with water when cleaning the inner wall of the mixing drum 1 later.

[0034] A first connecting box 9 is fixedly connected to one side of the discharge pipe 5 and the mixing drum 1. One end of the first connecting box 9 is connected to the inside of the discharge pipe 5. A first connecting plate 13 is slidably engaged inside the first connecting box 9. A first baffle 12 is fixedly connected to one end of the first connecting plate 13. The diameter of the first baffle 12 is equal to the diameter of the inside of the discharge pipe 5. The internal space of the first connecting box 9 is larger than the diameter of the first baffle 12. The end of the first connecting plate 13 away from the first baffle 12 passes through one end of the first connecting box 9. A first positioning hole 11 is opened at the top of each end of the first connecting box 9. A first insertion hole is opened at the top of the end of the first connecting plate 13 near the first baffle 12. A first positioning rod 10 is slidably connected inside the first positioning hole 11. When the first insertion hole moves to the position corresponding to the first positioning hole 11 on the side near the discharge pipe 5, the first baffle 12 closes the inside of the discharge pipe 5. The diameter of the first positioning rod 10 is adapted to the diameter of the first insertion hole. The bottom of the first positioning rod 10 passes through the inside of the first positioning hole 11 and connects to the inside of the first insertion hole.

[0035] By using the first baffle 12, during mixing, the first baffle 12 is moved into the discharge pipe 5. At this time, the position of the first insertion hole corresponds to the position of the first positioning hole 11 on the side near the discharge pipe 5. Then, the first positioning rod 10 is inserted into the first insertion hole and the first positioning hole 11, thereby fixing the position of the first baffle 12 and preventing the material from flowing out of the discharge pipe 5 during mixing. At the same time, during later discharge, by pulling out the first positioning rod 10, one end of the first connecting plate 13 is pulled, causing the other end of the first connecting plate 13 to move away from the discharge pipe 5 along with the first baffle 12. At this time, the position of the first insertion hole will correspond to the position of the first positioning hole 11 on the side away from the discharge pipe 5. Then, the first positioning rod 10 is inserted into the first positioning hole 11 and the first insertion hole, fixing the position of the first baffle 12, thereby facilitating discharge.

[0036] A traction rope 16 is fixedly connected to the bottom of the middle part of the first scraper 17. A counterweight 15 is fixedly connected to one end of the traction rope 16. The counterweight 15 can move along the inside of the arc tube 6 out of the bottom of the arc tube 6. The length of the traction rope 16 is greater than the length of the arc tube 6. A pull rope 19 is fixedly connected to the top of the middle part of the first scraper 17. The length of the pull rope 19 is greater than the length of the straight tube 7. A connecting cap 14 is threaded to the top of the straight tube 7. A bolt 18 is fixedly connected to one side of the top of the straight tube 7. The end of the pull rope 19 away from the first scraper 17 passes through the top of the connecting cap 14 and is wrapped around the outside of the bolt 18.

[0037] The scraper assembly, designed primarily for the arc-shaped section 6 at the bottom of the discharge pipe 5, consists of a straight pipe 7, a first scraper 17, a traction rope 16, a pull rope 19, and a counterweight 15. During operation, by releasing one end of the pull rope 19 connected to the bolt 18, the counterweight 15 automatically moves the first scraper 17 downwards. During this movement, the counterweight 15 moves along the interior of the arc-shaped pipe 6 out of its base. Pulling the counterweight 15 then causes the first scraper 17 to slide along the connection between the straight pipe 7 and the arc-shaped pipe 6, thus cleaning the arc-shaped pipe 6. The ink residue inside can be completely scraped off from the tube wall by the first scraper 17, which is adapted to the space of the straight tube 7. At the same time, when resetting, the first scraper 17 can be moved away from the inside of the arc tube 6 and back into the inside of the straight tube 7 by pulling the pull rope 19. This does not affect the normal material discharge in the arc tube 6 and facilitates the use of the scraper next time. At the same time, the connecting cap 14 can be used to move the connecting cap 14 away from the top of the straight tube 7 when cleaning the first scraper 17, so that the first scraper 17 can be moved away from the inside of the straight tube 7, which makes it easier to clean the straight tube 7.

[0038] A second connecting box 21 is fixedly connected to one side of the bottom of the straight tube 7. A third connecting plate 30 is slidably engaged inside the second connecting box 21. A second baffle 20 is fixedly connected to one end of the third connecting plate 30. The diameter of the second baffle 20 is equal to the diameter of the inside of the straight tube 7. A second positioning hole 22 is opened at the top of both ends of the second connecting box 21. A second positioning rod 23 is slidably connected inside the second positioning hole 22. A second insertion hole is opened at the top of the third connecting plate 30 near the second baffle 20. The position of the second baffle 20 is located at the top of the connection between the straight tube 7 and the discharge tube 5. When the second insertion hole moves to correspond to the position of the second positioning hole 22 near the side of the straight tube 7, the second baffle 20 closes the inside of the straight tube 7. When the first scraper 17 moves to the top of the straight tube 7, the bottom of the counterweight 15 is higher than the top of the second baffle 20. The diameter of the second positioning rod 23 is matched with the diameter of the second insertion hole. The bottom of the second positioning rod 23 passes through the inside of the second positioning hole 22 and connects to the inside of the second insertion hole.

[0039] With the second baffle 20, second connecting box 21, and second positioning rod 23 configured, during material feeding, the second baffle 20 is moved into the straight tube 7, and then the second positioning rod 23 is inserted into the second positioning hole 22 and the second insertion hole, thereby fixing the position of the second baffle 20 and preventing the material from flowing out of the straight tube 7 during discharge. At the same time, during later cleaning, by pulling out the second positioning rod 23, the third connecting plate 30 is moved to take the second baffle 20 away from the inside of the straight tube 7, thereby opening the connection between the straight tube 7 and the arc tube 6, which facilitates the first scraper 17 to clean the inside of the arc tube 6. At the same time, when the second baffle 20 is away from the inside of the straight tube 7, the position of the second insertion hole will correspond to the position of the second positioning hole 22 on the side away from the straight tube 7. At this time, the second positioning rod 23 is inserted into the second insertion hole and the second positioning hole 22, fixing the position of the second baffle 20, which facilitates the use of the first scraper 17.

[0040] A third connecting box 31 is fixedly connected to one side of the alignment tube 8. A second connecting plate 26 is slidably engaged inside the third connecting box 31. A third baffle 25 is fixedly connected to one end of the second connecting plate 26. The diameter of the third baffle 25 is equal to the diameter inside the alignment tube 8. The third baffle 25 is located on one side of the connection between the straight tube 7 and the alignment tube 8. Sliding grooves are provided on the top of the third connecting box 31 and one side of the second connecting box 21. An L-shaped plate 24 is slidably connected inside the sliding groove. One end of the L-shaped plate 24 is fixedly connected to the top of the second connecting plate 26, and the other end of the L-shaped plate 24 is fixedly connected to one side of the third connecting plate 30.

[0041] By using the third connecting box 31, the third baffle 25, and the L-shaped plate 24, when the third baffle 25 moves into the alignment tube 8, the problem of material flowing out of the alignment tube 8 during discharge can be avoided. At the same time, when cleaning the discharge tube 5 and the arc tube 6, the L-shaped plate 24 is moved first, causing the third connecting plate 30 to move together with the second connecting plate 26, causing the second connecting plate 26 to move out of the alignment tube 8 with the third baffle 25, thus facilitating the use of the second scraper 27. At the same time, by using the L-shaped plate 24, when the position of the second baffle 20 is fixed, the position of the third baffle 25 is also fixed, thus avoiding the trouble of needing to position multiple times.

[0042] Multiple push plates 4 are fixedly connected to the bottom of the stirring paddle 3 via a shaft. The push plates 4 are arc-shaped. The bottom of the push plates 4 is in contact with the bottom of the inside of the stirring drum 1, and the end of the push plates 4 away from the shaft of the stirring paddle 3 is in contact with the inner wall of the stirring drum 1.

[0043] By setting the pusher plate 4, when discharging, the motor 2 is started to rotate the pusher plate 4, which will drive the material to the input end of the discharge pipe 5, thereby avoiding the problem of material remaining at the bottom of the mixing drum 1.

[0044] Work steps

[0045] In this embodiment, during material feeding, the L-shaped plate 24 is moved, causing the third connecting plate 30 to move along with the second connecting plate 26. At this time, the second baffle 20 and the third baffle 25 will block the inside of the straight pipe 7 and the alignment pipe 8. Then, the second positioning rod 23 is inserted into the second positioning hole 22 and the second insertion hole, thereby fixing the positions of the second baffle 20 and the third baffle 25. Next, the first positioning rod 10 is pulled out, and one end of the first connecting plate 13 is pulled, causing the other end of the first connecting plate 13 to move away from the inside of the discharge pipe 5 along with the first baffle 12. At this time, the position of the first insertion hole will correspond to the position of the first positioning hole 11 on the side away from the discharge pipe 5. Then, the first positioning rod 10 is inserted into the first positioning hole 11 and the first insertion hole, fixing the position of the first baffle 12, thus facilitating material discharge from the inside of the discharge pipe 5 and the arc-shaped pipe 6. Afterwards, when cleaning the inside of the discharge pipe 5 and the arc-shaped pipe 6, the second positioning rod 23 is pulled out, and the L-shaped plate 24 is moved, causing the third connecting plate 30 to move along with the second connecting plate 26. The second baffle 20 is moved away from the inside of the straight pipe 7, and the second connecting plate 26 is moved away from the inside of the alignment pipe 8, along with the third baffle 25, thereby opening the connection between the straight pipe 7 and the arc-shaped pipe 6, as well as the inside of the alignment pipe 8. At this point, the push rod 28 pushes the second scraper 27 forward along the inner wall of the pipe. When the second scraper 27 moves into the inside of the discharge pipe 5, it effectively scrapes away the water-based ink residue deposits on the pipe wall, thus avoiding blockage caused by adhesion. Afterward, the pull rope 19 connected to the bolt is released. At one end of 18, the counterweight 15 automatically moves the first scraper 17 downwards using its own weight. During the movement, the counterweight 15 will move along the inside of the arc tube 6 out of the bottom of the arc tube 6. At this time, by pulling the counterweight 15, the first scraper 17 is slid along the connecting structure between the straight tube 7 and the arc tube 6, thereby cleaning the ink residue inside the arc tube 6. Since the first scraper 17 is spatially compatible with the straight tube 7, it can completely scrape off the adhering substances on the tube wall, thereby cleaning the inside of the discharge tube 5 and the arc tube 6.

[0046] 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 and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A kind of polyurethane water-based ink processing anti-blocking discharge device, including stirring cylinder, the top of the stirring cylinder is fixedly connected with motor, the middle part inside the stirring cylinder is rotatably connected with stirring paddle, the output of the motor is fixedly connected with the shaft of stirring paddle by penetrating the top of stirring cylinder, the bottom of the stirring cylinder one side is communicated with discharge pipe, it is characterized by: The bottom of the discharge pipe away from the mixing drum is connected to an arc-shaped pipe. A scraping assembly for cleaning the inside of the discharge pipe is provided on one side of the discharge pipe. The scraping assembly includes an alignment tube connected to the end of the discharge pipe away from the mixing drum. The alignment tube is symmetrically arranged with the discharge pipe and is connected to the inside of the discharge pipe. A second scraper is slidably connected inside the alignment tube. The specifications and dimensions of the second scraper are adapted to the specifications and dimensions of the internal space of the alignment tube. A push rod is fixedly connected to one side of the second scraper. The top of the discharge pipe is provided with a scraper assembly for cleaning the inside of the arc-shaped pipe. The scraper assembly includes a straight pipe connected to the top of the connection between the discharge pipe and the alignment pipe. The bottom of the straight pipe is connected to the top of the arc-shaped pipe. A first scraper is slidably connected inside the straight pipe. The first scraper can slide along the communication structure between the straight pipe and the arc-shaped pipe. The specifications and dimensions of the first scraper are adapted to the specifications and dimensions of the internal space of the straight pipe.

2. The anti-blocking discharging device for processing polyurethane water-based ink according to claim 1, characterized in that: A first connecting box is fixedly connected to one side of the discharge pipe connected to the mixing drum. One end of the first connecting box is connected to the inside of the discharge pipe. A first connecting plate is slidably engaged inside the first connecting box. A first baffle is fixedly connected to one end of the first connecting plate. The diameter of the first baffle is equal to the diameter of the inside of the discharge pipe. The internal space of the first connecting box is larger than the diameter of the first baffle. The end of the first connecting plate away from the first baffle passes through one end of the first connecting box. A first positioning hole is opened at the top of each end of the first connecting box. A first insertion hole is opened at the top of the end of the first connecting plate near the first baffle. A first positioning rod is slidably connected inside the first positioning hole. When the first insertion hole moves to the position corresponding to the first positioning hole on the side near the discharge pipe, the first baffle closes the inside of the discharge pipe. The diameter of the first positioning rod is adapted to the diameter of the first insertion hole. The bottom of the first positioning rod passes through the inside of the first positioning hole and connects to the inside of the first insertion hole.

3. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 1, characterized in that: The diameter of the alignment tube is equal to the diameter of the discharge tube. A cap is installed on one side of the alignment tube, and the end of the push rod away from the second scraper passes through the inside of the cap.

4. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 1, characterized in that: A traction rope is fixedly connected to the bottom of the middle part of the first scraper, and a counterweight is fixedly connected to one end of the traction rope. The counterweight can move along the inside of the arc-shaped tube out of the bottom of the arc-shaped tube. The length of the traction rope is greater than the length of the arc-shaped tube. A pull rope is fixedly connected to the top of the middle part of the first scraper, and the length of the pull rope is greater than the length of the straight tube.

5. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 4, characterized in that: The top of the straight pipe is threaded with a connecting cap, and a bolt is fixedly connected to one side of the top of the straight pipe. The end of the pull rope away from the first scraper passes through the top of the connecting cap and is wrapped around the outside of the bolt.

6. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 5, characterized in that: A second connecting box is fixedly connected to one side of the bottom of the straight tube. A third connecting plate is slidably engaged inside the second connecting box. A second baffle is fixedly connected to one end of the third connecting plate. The diameter of the second baffle is equal to the diameter inside the straight tube. A second positioning hole is opened at the top of each end of the second connecting box. A second positioning rod is slidably connected inside the second positioning hole.

7. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 6, characterized in that: The third connecting plate has a second insertion hole at the top near the second baffle. The second baffle is located at the top of the connection between the straight pipe and the discharge pipe. When the second insertion hole moves to correspond to the position of the second positioning hole near the straight pipe, the second baffle closes the inside of the straight pipe. When the first scraper moves to the top of the straight pipe, the bottom of the counterweight is higher than the top of the second baffle. The diameter of the second positioning rod is adapted to the diameter of the second insertion hole. The bottom of the second positioning rod passes through the inside of the second positioning hole and connects with the inside of the second insertion hole.

8. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 6, characterized in that: A third connecting box is fixedly connected to one side of the alignment tube. A second connecting plate is slidably engaged inside the third connecting box. A third baffle is fixedly connected to one end of the second connecting plate. The diameter of the third baffle is equal to the diameter inside the alignment tube. The third baffle is located on one side of the connection between the straight tube and the alignment tube.

9. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 8, characterized in that: The top of the third connecting box and one side of the second connecting box are provided with sliding grooves. An L-shaped plate is slidably connected inside the sliding groove. One end of the L-shaped plate is fixedly connected to the top of the second connecting plate, and the other end of the L-shaped plate is fixedly connected to one side of the third connecting plate.

10. The anti-clogging discharge device for polyurethane water-based ink processing according to claim 1, characterized in that: The bottom of the stirring paddle is fixedly connected to multiple push plates via a shaft. The push plates are arc-shaped, and the bottom of the push plates is in contact with the bottom of the stirring drum. The end of the push plate away from the stirring paddle shaft is in contact with the inner wall of the stirring drum.

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