A latex press with a clogging prevention function

Abstract

This invention discloses a latex press capable of clearing blockages, belonging to the field of latex processing technology. It includes a base, a screw extruder, a reverse-rotation blockage clearing mechanism, and a oscillating scraping mechanism. The screw extruder is fixedly installed on the upper end of the base. The reverse-rotation blockage clearing mechanism is connected to the screw extruder. The reverse-rotation blockage clearing mechanism includes a striking component and a reverse-rotation component. The screen in the screw extruder is connected to the reverse-rotation component. The oscillating scraping mechanism for clearing latex is installed on the upper left side of the outer casing of the screw extruder. Through this method, the latex on the inner wall of the screen is driven to undergo relative displacement and the contact points with the inner wall of the screen are changed, preventing the latex from sliding coaxially with the variable-pitch screw shaft and reducing the quality of latex dehydration.

Description

Technical Field

[0001] This invention relates to the field of latex processing technology, and more specifically to a latex press that can clear blockages. Background Technology

[0002] Latex is the core raw material of the rubber processing industry, and pressing and dehydration are key processes in latex processing, directly determining the purity, quality, and production efficiency of latex products. Screw presses, with their compact structure, high dehydration efficiency, and strong continuous operation capabilities, have become the mainstream equipment in latex pressing and dehydration, and are widely used in industrial processing lines for both natural and synthetic latex.

[0003] Chinese patent CN112123837B discloses a screw press, comprising: a frame; a feed hopper; a pressing screw connected to the feed hopper for pushing material; a drive motor connected to the pressing screw; a screen located between the pressing screw and the frame; a back pressure device connected to the slag discharge end of the pressing screw; a discharge port located at the slag discharge end of the pressing screw for discharging solid slag; a slurry conditioning and desanding hopper located below the screen; a sand-lifting screw connected to the slurry conditioning and desanding hopper; and a slurry outlet for discharging the desanded slurry. However, this device still has the following problems during use: When latex is subjected to spiral extrusion, it rubs against the inner wall of the screen, causing the latex temperature to rise. Latex itself is a material with high viscoelasticity, and as the temperature rises, it is prone to softening and increasing its adhesiveness. This can cause some latex to stick to the inner wall of the screen and remain stationary, increasing the probability of blockage during latex pressing and thus reducing the pressing quality of the latex.

[0004] Based on this, the present invention designs a latex press that can clear blockages to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a latex press that can clear blockages.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A clog-clearing latex press includes a base, a screw extruder, a reverse-rotating clog-clearing mechanism, and a oscillating scraping mechanism; The screw extruder is fixedly installed on the upper end of the base; A reverse rotation unblocking mechanism is connected to the screw extruder to control the movement of latex that adheres to and remains stationary on the inner wall of the screen during the pressing process of the screw extruder. The reverse rotation unblocking mechanism includes a striking component and a reverse rotation component; the striking component and the reverse rotation component are connected to the screw extruder; The screen in the screw extruder is connected to the reverse rotation assembly; A swing scraper mechanism for removing latex that has been pressed and dehydrated above the discharge port of the screw extruder is installed on the upper left side of the outer casing of the screw extruder. Furthermore, the striking assembly includes a drive module and a movable module; the drive module is installed at the right end of the screw extruder; the movable module is connected to the drive module and the screw extruder; the drive module is connected to the reverse rotation assembly. Furthermore, the drive module includes a support plate, a blockage control motor, and an eccentric turntable. The support plate is fixedly installed at the right end of the screw extruder; the blockage control motor is fixedly installed at the right end of the support plate; the eccentric turntable is rotatably installed on the lower right side of the screw extruder; and the support plate is connected to the reverse rotation assembly. Furthermore, the active module includes a striking ring, a drive shaft, and a connecting shaft. Rotating grooves are symmetrically arranged on the lower right and lower left sides of the screw extruder, and lifting grooves are symmetrically opened on the upper left and right sides of the middle of the screw extruder. The right end of the drive shaft is fixedly connected to the outer ring of the eccentric turntable, and the left end of the drive shaft is slidably connected to the inner wall of the left rotating groove; the left and right ends of the connecting shaft are respectively slidably connected to the inner walls of the lifting grooves on the left and right sides; the upper ends of multiple striking rings are hinged to the connecting shaft, and the lower ends of the striking rings are hinged to the drive shaft. Furthermore, the reverse rotation assembly includes a sealing mounting ring, a synchronous transmission assembly, and a control assembly; the sealing mounting ring is rotatably mounted at the middle of the right end of the screw extruder; the control assembly is connected to the sealing mounting ring and the screw extruder. The synchronous drive assembly is installed at the right end of the support plate; the synchronous drive assembly is connected to the unblocking control motor and the control assembly; the screen is fixedly connected to the sealing mounting ring; Furthermore, the control components include a drive gear and a driven gear ring, the driven gear ring being fixedly mounted on the right end of the sealing mounting ring; The drive gear is rotatably mounted on the right end of the screw extruder; the drive gear meshes with the driven gear ring. One end of the synchronous transmission assembly is fixedly connected to the drive gear; the other end of the synchronous transmission assembly is fixedly connected to the output end of the unblocking control motor. The synchronous transmission component enables the drive gear to be connected to the output end of the unblocking control motor. Furthermore, the oscillating scraping mechanism includes a fixed frame, a cleaning motor, a cleaning disc, a cleaning roller, an oscillating rod, and a scraper; the fixed frame is fixedly installed on the upper left side of the screw extruder; the cleaning motor is fixedly installed on the upper left side of the screw extruder; the cleaning disc is rotatably installed on the upper left side of the fixed frame; the output end of the cleaning motor is fixedly connected to the cleaning disc. The right end of the swing arm is rotatably connected to the upper right side of the fixed frame; A movable groove is provided in the middle of the swing rod; the cleaning roller is rotatably installed on the outer side of the upper end of the cleaning disc; the cleaning roller is in rolling connection with the inner wall of the swing rod. The scraper is fixedly installed at the left end of the swing arm; Furthermore, the outer end of the scraper is provided with an anti-stick coating.

[0007] Compared with the prior art, the beneficial effects of this invention are as follows: 1. Latex requiring pressing and dehydration is fed into the feed inlet of a screw extruder. The variable-pitch screw shaft inside the screw extruder then rotates, driving the latex at the feed inlet towards the discharge outlet. As the pitch of the variable-pitch screw shaft gradually decreases while the shaft diameter gradually increases, the volume of the screw groove gradually decreases. This causes the pressure inside the screw groove to gradually increase as the latex moves towards the discharge outlet, thereby squeezing out the water from the latex and discharging it through the sieve holes. Furthermore, the latex, under the influence of the variable pitch screw shaft... When the screw shaft is extruded, it rubs against the inner wall of the screen, which raises the temperature of the latex, causing it to soften and become more adhesive. Some of the latex adheres to the inner wall of the screen and becomes stationary. At this time, the reverse rotation component controls the screen to rotate, and the rotation direction of the screen is opposite to that of the screw shaft. The inner wall of the screen then applies a frictional force to the adhered latex in the opposite direction to the rotation direction of the screw shaft, thereby driving the latex on the inner wall of the screen to undergo relative displacement and change the contact area with the inner wall of the screen. This prevents the latex from sliding coaxially with the screw shaft and reducing the quality of latex dehydration. 2. The striking component also strikes the outer wall of the screen, further separating the latex adhering to the inner wall of the screen, improving the dehydration effect during latex pressing and enhancing the practicality of the device. Finally, the variable pitch screw shaft drives the pressed latex to exit from the discharge port of the screw extruder. Because the variable pitch screw shaft is continuously rotating and the pressed latex adheres to each other and clumps together, the latex located below the discharge port of the screw extruder will fall off under its own weight, while the latex located above the discharge port will accumulate. Subsequently, the oscillating scraping mechanism will repeatedly push the clumps of latex located above the discharge port of the screw extruder, causing the clumps of latex above the discharge port to fall downwards from both sides of the discharge port of the screw extruder, thereby preventing the pressed latex from clogging at the discharge port of the screw extruder and improving the discharge speed and pressing efficiency. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0009] Figure 1 The present invention relates to a three-dimensional latex press capable of clearing blockages. Figure 1 ; Figure 2 This is a front view of a latex press with a clog-clearing capability according to the present invention; Figure 3 This is a left view of a latex press with a clog-clearing capability according to the present invention. Figure 4 The present invention relates to a three-dimensional latex press capable of clearing blockages. Figure 2 ; Figure 5 For along Figure 3 A three-dimensional image with a portion removed along the CC direction; Figure 6 For along Figure 3 A three-dimensional view with a portion removed along the DD direction; Figure 7 for Figure 1 Enlarged view of point A in the middle; Figure 8 for Figure 4 Enlarged view of point B in the middle.

[0010] The labels in the diagram represent: 1. Base; 2. Screw extruder; 21. Screen; 22. Variable pitch screw shaft; 3. Reverse rotation unblocking mechanism; 31. Knocking ring; 32. Sealing mounting ring; 33. Unblocking control motor; 34. Synchronous transmission assembly; 35. Drive gear; 36. Driven gear ring; 37. Eccentric turntable; 38. Rotating groove; 39. Lifting groove; 310. Drive shaft; 311. Connecting shaft; 312. Support plate; 4. Swing scraping mechanism; 41. Fixed frame; 42. Cleaning motor; 43. Cleaning disc; 44. Cleaning roller; 45. Swing rod; 46. Movable groove; 47. Scraper plate. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0012] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0013] In some embodiments, please refer to the accompanying drawings. Figures 1-8 A latex press capable of clearing blockages includes a base 1, a screw extruder 2, a reverse rotation blockage clearing mechanism 3, and a swing scraping mechanism 4; The screw extruder 2 is fixedly installed on the upper end of the base 1; The reverse rotation unblocking mechanism 3, which controls the movement of latex that adheres to and remains stationary against the inner wall of the screen 21 during the pressing process of the screw extruder 2, is connected to the screw extruder 2. The reverse rotation unblocking mechanism 3 includes a striking component and a reverse rotation component; the striking component and the reverse rotation component are connected to the screw extruder 2; The screen 21 in the screw extruder 2 is connected to the reverse rotation assembly; The oscillating scraper 4, used to remove the latex that has been pressed and dehydrated above the discharge port of the screw extruder 2, is installed on the upper left side of the outer shell of the screw extruder 2. The left end of the screw extruder 2 is provided as the discharge port; the upper right end of the screw extruder 2 is provided as the feed port. In this invention, latex that needs to be pressed and dehydrated is fed into the feed inlet of the screw extruder 2. Then, the variable pitch screw shaft 22 inside the screw extruder 2 rotates, driving the latex located at the feed inlet of the screw extruder 2 to move towards the discharge outlet of the screw extruder 2. As the pitch of the variable pitch screw shaft 22 gradually decreases and the shaft diameter gradually increases, the volume of the screw groove gradually decreases. As the latex moves towards the discharge outlet, the pressure inside the screw groove gradually increases, thereby squeezing out the water in the latex and discharging it through the sieve holes on the screen 21. Furthermore, when the latex is squeezed by the variable pitch screw shaft 22, it rubs against the inner wall of the screen 21, which raises the temperature of the latex, causing it to soften and become more adhesive. Some of the latex adheres to the inner wall of the screen 21 and becomes stationary. At this time, the reverse rotation component controls the screen 21 to rotate, and the rotation direction of the screen 21 is opposite to the rotation direction of the variable pitch screw shaft 22. The inner wall of the screen 21 then applies a frictional force to the adhered latex in the opposite direction to the rotation direction of the variable pitch screw shaft 22, thereby driving the latex on the inner wall of the screen 21 to undergo relative displacement and change the contact area with the inner wall of the screen 21, thus preventing the latex from sliding coaxially with the variable pitch screw shaft 22 and reducing the quality of latex dehydration. At the same time, the striking component will also strike the outer wall of the screen 21, causing the latex adhering to the inner wall of the screen 21 to further separate from the inner wall of the screen 21, thereby improving the dehydration effect during latex pressing and enhancing the practicality of the device. Finally, the variable pitch screw shaft 22 drives the pressed latex to exit from the discharge port of the screw extruder 2. Since the variable pitch screw shaft 22 is in a continuous rotating state, and the pressed latex adheres to each other and clumps together, the latex located below the discharge port of the screw extruder 2 will fall off under its own gravity, while the latex located above the discharge port of the screw extruder 2 will accumulate. Then, the oscillating scraper mechanism 4 will reciprocate to push the clumps of latex located above the discharge port of the screw extruder 2, causing the clumps of latex above the discharge port to fall down from the front and rear sides of the discharge port of the screw extruder 2, thereby preventing the pressed latex from clogging at the discharge port of the screw extruder 2 and improving the discharge speed and pressing efficiency.

[0014] The striking assembly includes a striking ring 31, a blockage control motor 33, an eccentric turntable 37, a drive shaft 310, a connecting shaft 311, and a support plate 312. The support plate 312 is fixedly installed at the right end of the screw extruder 2. The blockage control motor 33 is fixedly installed at the right end of the support plate 312. The eccentric turntable 37 is rotatably installed on the lower right side of the screw extruder 2. Rotating grooves 38 are symmetrically arranged on the lower right and lower left sides of the screw extruder 2. Lifting grooves 39 are symmetrically opened on the upper left and right sides of the middle part of the screw extruder 2. The right end of the drive shaft 310 is fixedly connected to the outer ring of the eccentric turntable 37, and the left end of the drive shaft 310 is limited and slidably connected to the inner wall of the left rotating groove 38; the left and right ends of the connecting shaft 311 are respectively limited and slidably connected to the inner walls of the lifting grooves 39 on the left and right sides; the upper ends of the multiple striking rings 31 are hinged to the connecting shaft 311, and the lower ends of the striking rings 31 are hinged to the drive shaft 310. The support plate 312 is connected to the reverse rotation assembly.

[0015] The reverse rotation assembly includes a sealing mounting ring 32, a synchronous transmission assembly 34, a drive gear 35, and a driven gear ring 36; the sealing mounting ring 32 is rotatably mounted at the middle of the right end of the screw extruder 2; the variable pitch screw shaft 22 is installed inside the sealing mounting ring 32. Driven gear ring 36 is fixedly installed at the right end of sealing mounting ring 32; The drive gear 35 is rotatably mounted on the right end of the screw extruder 2; the drive gear 35 is meshed with the driven gear ring 36. Synchronous transmission assembly 34 is installed on the right end of support plate 312; one end of synchronous transmission assembly 34 is fixedly connected to drive gear 35; the other end of synchronous transmission assembly 34 is fixedly connected to the output end of unblocking control motor 33. The synchronous transmission assembly 34 enables the drive gear 35 to be connected to the output end of the unblocking control motor 33. Screen 21 is fixedly connected to sealing mounting ring 32; The synchronous transmission assembly 34 adopts a synchronous belt and synchronous pulley synchronous transmission assembly; The oscillating scraping mechanism 4 includes a fixed frame 41, a cleaning motor 42, a cleaning disc 43, a cleaning roller 44, an oscillating rod 45, and a scraper 47; the fixed frame 41 is fixedly installed on the upper left side of the screw extruder 2; the cleaning motor 42 is fixedly installed on the upper left side of the screw extruder 2; the cleaning disc 43 is rotatably installed on the upper left side of the fixed frame 41; the output end of the cleaning motor 42 is fixedly connected to the cleaning disc 43. The right end of the swing arm 45 is rotatably connected to the upper right side of the fixed frame 41; A movable groove 46 is provided in the middle of the swing rod 45; the cleaning roller 44 is rotatably installed on the outer side of the upper end of the cleaning disc 43; the cleaning roller 44 is in rolling connection with the inner wall of the swing rod 45. The scraper 47 is fixedly installed at the left end of the swing arm 45; The outer end of the scraper 47 is provided with an anti-stick coating to prevent latex from sticking. In this invention, latex that needs to be pressed and dehydrated is fed into the feed inlet of the screw extruder 2. Then, the variable pitch screw shaft 22 inside the screw extruder 2 rotates, driving the latex located at the feed inlet of the screw extruder 2 to move towards the discharge outlet of the screw extruder 2. As the pitch of the variable pitch screw shaft 22 gradually decreases and the shaft diameter gradually increases, the volume of the screw groove gradually decreases. As the latex moves towards the discharge outlet, the pressure inside the screw groove gradually increases, thereby squeezing out the water in the latex and discharging it through the sieve holes on the screen 21. Furthermore, when the latex is squeezed by the variable pitch screw shaft 22, it rubs against the inner wall of the screen 21, causing the latex temperature to rise, resulting in softening of the latex and increased adhesion. Some of the latex adheres to the inner wall of the screen 21 and becomes stationary. At this time, the unblocking control motor 33 controls the drive gear 35 to rotate through the synchronous transmission component 34. The drive gear 35 drives the driven gear ring 36 to rotate, thereby causing the sealing mounting ring 32 to drive the screen 21 to rotate synchronously with the driven gear ring 36. At this time, the rotation direction of the screen 21 is opposite to the rotation direction of the variable pitch screw shaft 22. The inner wall of the screen 21 will then apply a frictional force to the adhered latex in the opposite direction to the rotation direction of the variable pitch screw shaft 22, thereby driving the latex on the inner wall of the screen 21 to undergo relative displacement and change the contact part with the inner wall of the screen 21, thus preventing the latex from sliding coaxially with the variable pitch screw shaft 22 and reducing the quality of latex dehydration. At the same time, the rotation of the unblocking control motor 33 will also control the rotation of the eccentric turntable 37. The eccentric turntable 37 controls the drive shaft 310 to rotate around the inner wall of the rotating groove 38. At this time, the drive shaft 310 will control the lower ends of multiple striking rings 31 to swing in the front and back direction. When the eccentric turntable 37 rotates, it will also push multiple striking rings 31 to follow the connecting shaft 311 to move up and down along the lifting groove 39. This will cause the inner wall of the striking rings 31 to strike the outer wall of the screen 21, so that the latex attached to the inner wall of the screen 21 will further separate from the inner wall of the screen 21, improve the dehydration effect during latex pressing, and improve the practicality of the device. Finally, the variable pitch screw shaft 22 drives the pressed latex to exit from the discharge port of the screw extruder 2. Since the variable pitch screw shaft 22 is in a continuous rotating state, and the pressed latex adheres to each other and clumps together, the latex located below the discharge port of the screw extruder 2 will fall off under its own gravity, while the latex located above the discharge port of the screw extruder 2 will accumulate. Then, the cleaning motor 42 controls the cleaning disc 43 to rotate, and then the cleaning roller 44 drives the swing rod 45 to swing back and forth through the movable groove 46, thereby causing the scraper 47 to move back and forth, so that the clumps of latex located above the discharge port of the screw extruder 2 fall down from the front and back sides of the discharge port of the screw extruder 2, thus avoiding the blockage of the pressed latex at the discharge port of the screw extruder 2, and improving the discharge speed and pressing efficiency.

[0016] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A latex press capable of clearing blockages, comprising a base (1), characterized in that: It also includes a screw extruder (2), a reverse rotation unblocking mechanism (3), and a swing scraper mechanism (4); The screw extruder (2) is fixedly installed on the upper end of the base (1); The reverse rotation unblocking mechanism (3) used to control the movement of the latex that adheres to the inner wall of the screen (21) during the pressing process of the screw extruder (2) is connected to the screw extruder (2); The reverse rotation unblocking mechanism (3) includes a striking component and a reverse rotation component; the striking component and the reverse rotation component are connected to the screw extruder (2); The screen (21) in the screw extruder (2) is connected to the reverse rotation assembly; The swing scraper mechanism (4) for removing latex that has been pressed and dehydrated above the discharge port of the screw extruder (2) is installed on the upper left side of the outer shell of the screw extruder (2).

2. The latex press with unclogging capability according to claim 1, characterized in that, The striking assembly includes a drive module and a movable module; the drive module is installed at the right end of the screw extruder (2); the movable module is connected to the drive module and the screw extruder (2); the drive module is connected to the reverse rotation assembly.

3. The latex press capable of clearing blockages according to claim 2, characterized in that, The drive module includes a support plate (312), a blockage control motor (33), and an eccentric turntable (37). The support plate (312) is fixedly installed on the right end of the screw extruder (2); the blockage control motor (33) is fixedly installed on the right end of the support plate (312); the eccentric turntable (37) is rotatably installed on the lower right side of the screw extruder (2); and the support plate (312) is connected to the reverse rotation assembly.

4. The latex press capable of clearing blockages according to claim 3, characterized in that, The active module includes a striking ring (31), a drive shaft (310) and a connecting shaft (311). Rotating grooves (38) are symmetrically arranged on the lower right side and the lower left side of the screw extruder (2). Lifting grooves (39) are symmetrically opened on the upper left and right sides of the middle part of the screw extruder (2). The right end of the drive shaft (310) is fixedly connected to the outer ring of the eccentric turntable (37), and the left end of the drive shaft (310) is limited and slidably connected to the inner wall of the left rotating groove (38); the left and right ends of the connecting shaft (311) are respectively limited and slidably connected to the inner walls of the lifting grooves (39) on the left and right sides; the upper ends of multiple striking rings (31) are hinged to the connecting shaft (311), and the lower ends of the striking rings (31) are hinged to the drive shaft (310).

5. The latex press capable of clearing blockages according to claim 4, characterized in that, The reverse rotation assembly includes a sealing mounting ring (32), a synchronous transmission assembly (34), and a control assembly; the sealing mounting ring (32) is rotatably mounted on the middle of the right end of the screw extruder (2); the control assembly is connected to the sealing mounting ring (32) and the screw extruder (2); Synchronous drive assembly (34) is installed on the right end of support plate (312); synchronous drive assembly (34) is connected to unblocking control motor (33) and control assembly; screen (21) is fixedly connected to sealing mounting ring (32).

6. The latex press capable of clearing blockages according to claim 5, characterized in that, The control assembly includes a drive gear (35) and a driven gear ring (36), the driven gear ring (36) being fixedly mounted on the right end of the sealing mounting ring (32); The drive gear (35) is rotatably mounted on the right end of the screw extruder (2); the drive gear (35) meshes with the driven gear ring (36); One end of the synchronous transmission assembly (34) is fixedly connected to the drive gear (35); the other end of the synchronous transmission assembly (34) is fixedly connected to the output end of the unblocking control motor (33); The drive gear (35) is connected to the output end of the unblocking control motor (33) via the synchronous transmission assembly (34).

7. The latex press capable of clearing blockages according to claim 6, characterized in that, The oscillating scraping mechanism (4) includes a fixed frame (41), a cleaning motor (42), a cleaning disc (43), a cleaning roller (44), an oscillating rod (45), and a scraper (47); the fixed frame (41) is fixedly installed on the upper left side of the screw extruder (2); the cleaning motor (42) is fixedly installed on the upper left side of the screw extruder (2); the cleaning disc (43) is rotatably installed on the upper left side of the fixed frame (41); the output end of the cleaning motor (42) is fixedly connected to the cleaning disc (43); The right end of the swing arm (45) is rotatably connected to the upper right side of the fixed frame (41); A movable groove (46) is provided in the middle of the swing rod (45); the cleaning roller (44) is rotatably installed on the outer side of the upper end of the cleaning disc (43); the cleaning roller (44) is rolledly connected to the inner wall of the swing rod (45); The scraper (47) is fixedly installed on the left end of the swing arm (45).

8. The latex press capable of clearing blockages according to claim 7, characterized in that, The outer end of the scraper (47) is provided with an anti-stick coating.

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