Vacuum reactor for producing latex yarn

Abstract

This utility model provides a vacuum reactor for latex filament production, relating to the technical field of latex filament manufacturing equipment. It includes a reactor with a support base on its upper surface, a motor on the upper surface of the support base, and a stirring shaft connected to the motor's output shaft. The stirring shaft is located inside the reactor, and two sets of folding blades are provided on its side wall. It also includes a negative pressure extraction mechanism, comprising negative pressure pipes. Multiple sets of negative pressure pipes are continuously connected to the upper surface of the reactor, and each set of negative pressure pipes has a threaded pipe threaded to its upper surface. A limiting ring is provided inside the threaded pipe. This utility model, based on a bi-directional force switching mechanism using a ball-operated spring and a ring spring, solves the problem of vacuum leakage that easily occurs in the pressure holding stage after vacuuming in traditional vacuum reactors.

Description

Technical Field

[0001] This utility model relates to the technical field of latex filament manufacturing equipment, and more specifically, it relates to a vacuum reactor for latex filament production. Background Technology

[0002] Latex filaments are linear or strip-shaped polymer materials made primarily from natural or synthetic latex through special processes. They possess high elasticity and good ductility and are widely used in textiles, clothing, medical and health products, sporting goods, and daily necessities manufacturing. Examples include elastic fibers for elastic fabrics, elastic components for medical gloves and catheters, and support materials for sports protective gear.

[0003] In the production of latex filaments, the vacuum reactor is a key process equipment. Its main function is to complete the mixing, polymerization, degassing, and homogenization of latex raw materials under vacuum or negative pressure. The vacuum environment can effectively remove air bubbles and volatile substances from the latex solution, prevent oxidation reactions, and ensure that the finished latex filaments have a uniform internal structure, stable physical properties, and excellent service life. However, in actual operation, after the external negative pressure pump extracts the air from the reactor to achieve the required vacuum level, a pressure holding stage is needed to maintain a stable negative pressure environment for subsequent polymerization and curing processes. However, due to the potential for insufficient sealing performance at the connection points between the negative pressure extraction mechanism and the reactor body, pipe interfaces, and valve sealing surfaces, problems can easily arise. During the pressure holding process, external air can easily seep into the reactor through these weak points, causing the vacuum level inside the reactor to gradually decrease and making it impossible to maintain the stable negative pressure required by the process. This leakage phenomenon not only requires the external negative pressure machine to be frequently started for replenishment pumping to maintain the vacuum level, increasing equipment energy consumption and mechanical wear, shortening the service life of the negative pressure machine and increasing operating costs, but more importantly, the fluctuation and decrease in vacuum level will directly affect the defoaming effect of the latex liquid and the completeness of the polymerization reaction, resulting in quality defects such as residual bubbles, uneven strength, and elasticity reduction in latex filament products. At the same time, pressure holding failure will also prolong the process cycle and reduce production efficiency, affecting the use effect of the vacuum reactor and the stability and economy of latex filament production. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a vacuum reactor for latex filament production to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A vacuum reactor for producing latex threads includes a reactor, a support base on the upper surface of the reactor, a motor on the upper surface of the support base, an output shaft of the motor connected to a stirring shaft located inside the reactor, and two sets of folding blades on the side wall of the stirring shaft; it also includes a negative pressure extraction mechanism, which includes negative pressure pipes, and multiple sets of negative pressure pipes are connected through the upper surface of the reactor. Each set of negative pressure pipes has a threaded pipe threaded to its upper surface, and a limiting ring is provided inside the threaded pipe.

[0009] Preferably, a pressure gauge is provided on the upper surface of the reactor and a thermometer is provided on the side wall of the reactor. The configuration of the pressure gauge and the thermometer enables real-time monitoring of the two key process parameters, vacuum degree and temperature, inside the reactor.

[0010] Preferably, the side wall of the reactor is provided with a first heating tube and a second heating tube, the side wall of the reactor is also provided with a feeding tube, and the lower end face of the reactor is provided with a discharge valve. The configuration of the two heating tubes provides the reactor with sufficient and balanced heat input capacity, thereby improving the reaction rate inside the reactor.

[0011] Preferably, the threaded pipe has four sets of connecting pipes connected through its sidewall. Three sets of connecting pipes are threaded with sealing sleeves. The three sets of connecting pipes achieve reliable sealing through the threaded sealing sleeves to ensure the airtightness and integrity of the vacuum system. The remaining set of connecting pipes is used to connect an external negative pressure machine to achieve the vacuuming function.

[0012] Preferably, the upper end face of the threaded tube is threadedly connected to a threaded sleeve, and a slide rod is slidably connected inside the threaded sleeve. A limiting block is provided on the surface of the slide rod, and the limiting block is slidably connected to the inner wall of the threaded sleeve. A compression spring is provided on the upper end face of the limiting block, and the other end of the compression spring is fixedly connected to the inner side wall of the threaded sleeve. The threaded engagement structure between the threaded sleeve and the threaded tube realizes the function of adjusting the preload of the compression spring. By rotating the threaded sleeve to drive it to move axially, the initial compression of the compression spring can be changed, thereby controlling the magnitude of the reset thrust of the slide rod and the sealing disc.

[0013] Preferably, the end of the slide rod is provided with a sealing disc, and the inner wall of the threaded tube is provided with a sealing plate. The sealing plate and the sealing disc are in sealing contact. The sealing contact structure between the sealing disc and the sealing plate forms the core sealing interface of the negative pressure mechanism, which solves the problem of slow air leakage caused by poor sealing during the pressure holding process of traditional vacuum reactors.

[0014] Preferably, the lower end face of the sealing disc is provided with a locking rod, the end of the locking rod is slidably connected to the limiting ring, the locking rod is provided with a locking ball, the threaded tube is provided with a ring spring, and the side wall of the locking ball abuts against the ring spring. The design of the ring spring and the locking ball reduces the energy consumption of the external negative pressure machine.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a vacuum reactor for latex filament production, which has the following beneficial effects: This utility model is based on a bi-stable pressure holding mechanism with bidirectional force switching of a ball and a ring spring, which solves the problem of vacuum leakage that easily occurs in the pressure holding stage after vacuuming in traditional vacuum reactors. This mechanism constructs a pressure holding system with bi-directional stability by cleverly arranging key components such as sealing discs, slide rods, locking rods, ball and ring spring in the threaded tube.

[0017] In the initial sealed state, the elastic restoring force of the compression spring pushes the limiting block, which in turn drives the sliding rod to ensure a tight fit between the sealing disc and the sealing plate, forming a reliable airtight seal. At this time, the retaining ball is located below the ring spring and receives upward support from the ring spring. The entire system is in the first stable state, ensuring complete isolation between the reactor and the external environment. When the external negative pressure unit is started to perform vacuuming, the negative pressure generated in the negative pressure pipe acts on the surface of the sealing disc, forming an upward suction force. This suction force gradually increases until it overcomes the preload of the compression spring, pushing the sealing disc, along with the sliding rod, retaining rod, and retaining ball, upward. The sealing disc separates from the sealing plate, opening the evacuation channel. Air inside the reactor is continuously extracted through the negative pressure pipe, threaded pipe, and connecting pipe. When the ball moves upward with the lever, passes through the inner ring of the ring spring, and reaches the position above the ring spring, the force exerted by the ring spring on the side wall of the ball changes from the original upward supporting force to an upward pulling force. This reverse pulling force and the suction force of the negative pressure form a resultant force, which together maintains the separation state of the sealing disc and the sealing plate. At this time, the system enters the second stable state. After the negative pressure machine stops working, the compression spring pushes the sealing disc to seal with the sealing plate again. This mechanism effectively eliminates the slow air leakage caused by poor sealing during the pressure holding process of traditional vacuum reactors, ensuring that the reactor can maintain a stable vacuum environment for a long time, and providing reliable process conditions for the full degassing, homogeneous polymerization, and curing of the latex liquid. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a vacuum reactor for latex filament production according to the present invention;

[0019] Figure 2 This is a cross-sectional view of the reaction vessel in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the threaded tube and sealing sleeve in this utility model;

[0021] Figure 4 In this utility model Figure 3 A schematic diagram of the cross-sectional structure;

[0022] Figure 5 In this utility model Figure 3 A schematic diagram of the explosion structure.

[0023] In the diagram: 11. Reactor; 12. Support base; 13. Motor; 14. Stirring shaft; 15. Folding blade impeller; 16. Pressure gauge; 17. Thermometer; 18. First heating tube; 19. Second heating tube; 110. Feeding pipe; 111. Discharge valve; 21. Negative pressure pipe; 22. Threaded pipe; 23. Limiting ring; 24. Connecting pipe; 25. Sealing sleeve; 26. Threaded sleeve; 27. Sliding rod; 28. Limiting block; 29. ​​Compression spring; 210. Sealing disc; 211. Sealing plate; 212. Clamping rod; 213. Clamping ball; 214. Annular spring. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] Please see Figures 1-5 A vacuum reactor for producing latex threads includes a reactor 11, a support base 12 on the upper end face of the reactor 11, a motor 13 on the upper end face of the support base 12, an output shaft of the motor 13 connected to a stirring shaft 14, the stirring shaft 14 being located inside the reactor 11, two sets of folding blades 15 on the side wall of the stirring shaft 14, a pressure gauge 16 on the upper end face of the reactor 11, a thermometer 17 on the side wall of the reactor 11, a first heating pipe 18 and a second heating pipe 19 on the side wall of the reactor 11, a feeding pipe 110 on the side wall of the reactor 11, and a discharge valve 111 on the lower end face of the reactor 11.

[0028] It also includes a negative pressure extraction mechanism, which includes a negative pressure pipe 21. Multiple sets of negative pressure pipes 21 are connected to the upper end face of the reactor 11. Each set of negative pressure pipes 21 is threaded to a threaded pipe 22. A limiting ring 23 is provided inside the threaded pipe 22. Four sets of connecting pipes 24 are connected to the side wall of the threaded pipe 22. Sealing sleeves 25 are threaded to three sets of connecting pipes 24. A threaded sleeve 26 is threaded to the upper end face of the threaded pipe 22. A sliding rod 27 is slidably connected inside the threaded sleeve 26. A limiting block 28 is provided on the surface of the sliding rod 27. The limiting block 28 and the threaded sleeve are connected to each other. The inner wall of the 26 is slidably connected. The upper end of the limiting block 28 is provided with a compression spring 29. The other end of the compression spring 29 is fixedly connected to the inner side wall of the threaded sleeve 26. The end of the slide rod 27 is provided with a sealing plate 210. The inner side wall of the threaded tube 22 is provided with a sealing plate 211. The sealing plate 211 and the sealing plate 210 are sealed and abutted. The lower end of the sealing plate 210 is provided with a locking rod 212. The end of the locking rod 212 is slidably connected to the limiting ring 23. The locking rod 212 is provided with a locking ball 213. The threaded tube 22 is provided with a ring spring 214. The side wall of the locking ball 213 abuts against the ring spring 214.

[0029] In this invention, the material is first fed into the reactor 11 through the feeding pipe 110. Then, the air inside the reactor 11 is extracted to create a vacuum. First, a negative pressure machine is connected to the connecting pipes 24 on the multiple sets of threaded pipes 22 that are not sealed by the sealing sleeve 25. In the negative pressure extraction mechanism, the spring force of the compression spring 29 is greater than the spring force of the ring spring 214. Under normal conditions, the compression spring 29 pushes the limiting block 28, which in turn drives the slide rod 27 to push the sealing disc 210 against the sealing plate 211 inside the threaded pipe 22 to achieve a sealing contact. At this time, the ball 213 is located below the ring spring 214, and the ring spring 214 provides a thrust to the side wall of the ball 213. The negative pressure machine starts, and under the action of negative pressure, the slide rod 27 drives the sealing disc 210 to move upward, compressing the compression spring 29. At this time, the sealing disc 210 releases its sealing contact with the sealing plate 211. The upward movement of the sealing disc 210 drives the lower lever 212 and the ball 213 to move upward together. As the ball moves upward, the locking ball 213 overcomes the elastic force of the annular spring 214 and moves above the annular spring 214. The locking rod 212 slides upward along the limiting ring 23. At this time, the annular spring 214 provides a thrust to the side wall of the locking ball 213 that is opposite to that at the beginning. The air in the reactor 11 is gradually drawn out through the negative pressure pipe 21, then through the threaded pipe 22 and the connecting pipe 24. Under the thrust of the annular spring 214, the negative pressure machine only needs to provide a small suction force to keep the sealing disc 210 and the sealing plate 211 unlocked until the air in the reactor 11 is completely drawn out. The negative pressure machine stops working. At this time, the negative pressure disappears, and the compression spring 29 immediately rebounds and pushes the limiting block 28 to drive the sliding rod 27 to push the sealing disc 210 downward, so that the sealing disc 210 and the sealing plate 211 can be sealed and abutted again. At this time, the locking ball 213 overcomes the thrust of the annular spring 214 again and moves below the annular spring 214, thus sealing the reactor 11.

[0030] Then, the reactor 11 is heated by the first heating tube 18 and the second heating tube 19. The motor 13 is started, and the output of the motor 13 drives the stirring shaft 14 to rotate, which in turn drives the folding blade 15 to fully stir the material in the reactor 11. Finally, the material after the reaction is completed is discharged and collected through the discharge valve 111. The pressure gauge 16 and the thermometer 17 can monitor the pressure and temperature in the reactor 11 in real time. The rotating threaded sleeve 26 can adjust the thrust of the pressure spring 29 on the limit block 28, which can in turn adjust the force of the sealing disc 210 against the sealing plate 211. The design of multiple sets of connecting pipes 24 is because the threaded pipe 22 is threadedly connected to the lower negative pressure pipe 21. During installation, whichever set of connecting pipes 24 faces outward is easy to connect to the external negative pressure machine. The other three sets of connecting pipes 24 can be sealed by the threaded sealing sleeve 25.

[0031] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0032] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

[0033] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

[0034] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A vacuum reactor for latex filament production, comprising a reactor (11), characterized in that: The upper end face of the reactor (11) is provided with a support base (12), the upper end face of the support base (12) is provided with a motor (13), the output shaft of the motor (13) is connected to a stirring shaft (14), the stirring shaft (14) is located inside the reactor (11), and the side wall of the stirring shaft (14) is provided with two sets of folding blades (15); it also includes a negative pressure suction mechanism, the negative pressure suction mechanism includes a negative pressure pipe (21), the upper end face of the reactor (11) is connected to multiple sets of negative pressure pipes (21), the upper end face of each set of negative pressure pipes (21) is threadedly connected to a threaded pipe (22), and the threaded pipe (22) is provided with a limiting ring (23).

2. The vacuum reactor for latex filament production according to claim 1, characterized in that: A pressure gauge (16) is provided on the upper end face of the reactor (11), and a thermometer (17) is provided on the side wall of the reactor (11).

3. The vacuum reactor for latex filament production according to claim 2, characterized in that: The side wall of the reactor (11) is provided with a first heating pipe (18) and a second heating pipe (19). The side wall of the reactor (11) is also provided with a feeding pipe (110). The lower end face of the reactor (11) is provided with a discharge valve (111).

4. The vacuum reactor for latex filament production according to claim 1, characterized in that: The threaded pipe (22) has four sets of connecting pipes (24) connected through the side wall, and three sets of the connecting pipes (24) are threaded with sealing sleeves (25).

5. The vacuum reactor for latex filament production according to claim 4, characterized in that: The upper end face of the threaded tube (22) is threadedly connected to a threaded sleeve (26), and a sliding rod (27) is slidably connected inside the threaded sleeve (26). A limiting block (28) is provided on the surface of the sliding rod (27), and the limiting block (28) is slidably connected to the inner wall of the threaded sleeve (26). A compression spring (29) is provided on the upper end face of the limiting block (28), and the other end of the compression spring (29) is fixedly connected to the inner side wall of the threaded sleeve (26).

6. The vacuum reactor for latex filament production according to claim 5, characterized in that: The sliding rod (27) is provided with a sealing disc (210) at its end, and the inner wall of the threaded tube (22) is provided with a sealing plate (211), which is in sealing contact with the sealing disc (210).

7. The vacuum reactor for latex filament production according to claim 6, characterized in that: The lower end face of the sealing disc (210) is provided with a locking rod (212), the end of the locking rod (212) is slidably connected to the limiting ring (23), the locking rod (212) is provided with a locking ball (213), the threaded tube (22) is provided with a ring spring (214), and the side wall of the locking ball (213) abuts against the ring spring (214).

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