Anti-blocking double-screw continuous production device for organic silicon sealant

Abstract

The utility model discloses an anti-blocking organic silicon sealant double-screw continuous production device which is characterized in that a motor is connected with a driving shaft, the driving shaft is connected with one end of a double-screw production device, the other end of the double-screw production device is connected with a discharge port, a sampling port is arranged on the discharge port, and the sampling port is connected with an easy-to-clean device. The utility model solves the problem that the discharge port and the sampling port are easy to block, and has the advantages of simple structure and good anti-blocking effect.

Description

Technical Field

[0001] This utility model belongs to the field of sealant production technology, specifically relating to a twin-screw continuous production device for anti-clogging silicone sealant. Background Technology

[0002] Twin-screw continuous sealant production lines have become the mainstream equipment for producing silicone sealants for photovoltaic modules due to their high degree of automation, continuous production process, stable process control, and high production efficiency. This equipment typically consists of a three-stage twin-screw mixing unit, where the materials mixed in the second and third stages will cure into an elastomer after contact with moisture in the air.

[0003] When starting or stopping a twin-screw continuous production line, material needs to be discharged from the discharge port at the tail of the two-stage or three-stage screw mixing device. After solidifying with moisture in the air, this material not only forms a strong and highly elastic structure, but also has a strong adhesion to the stainless steel discharge port of the main equipment, making it very difficult to clean and thus causing the discharge port to become blocked.

[0004] During normal production, a twin-screw continuous production line needs to take materials from the sampling port at the tail of the two- or three-stage screw mixing device for process testing. At this time, the material also has a high adhesion strength to the stainless steel body, which is very difficult to clean. The sampling process is not smooth, and the appearance of the sample is poor, which affects the testing efficiency and generates waste glue.

[0005] Chinese patent CN201343584Y discloses a cooling and anti-clogging device for a vacuum twin-screw extruder, including a vacuum twin-screw drive mechanism, a vacuum twin-screw extruder, and a feed inlet. By installing a cooling device around the feed inlet of the vacuum twin-screw extruder, the temperature at the feed inlet is reduced. When the chips enter the feed inlet, their temperature is below their softening temperature, preventing the low-melting-point polyester chips from softening, sticking, or clumping at the feed inlet of the vacuum twin-screw extruder, thus ensuring normal production. However, this only ensures that the feed inlet is not prone to clogging; the clogging problems at the discharge outlet and sampling port remain unresolved.

[0006] Chinese patent CN204455363U discloses an anti-clogging feeding device for an extruder specifically designed for nylon 6 fiber production. A screw extruder is mounted on a base, with a lower rubber tube installed on the upper part of the screw extruder. The lower end of the lower rubber tube is connected to the screw extruder, and a feed pipe is installed at the upper end of the lower rubber tube. One end of the feed pipe is connected to the upper rubber tube, and the other end of the upper rubber tube is connected to a hopper. By improving the screw extruder's feeding structure, the feeding of the screw extruder can be made faster and smoother, avoiding clogging of the feed pipe. However, it only addresses the problem of clogging at the feed inlet and does not solve the problem of clogging at the discharge outlet and sampling port.

[0007] Therefore, it is necessary to develop a device that can solve the problem of blockage at the discharge port and / or sampling port of a twin-screw continuous production unit, so as to ensure normal start-up and shutdown of the unit and smooth sampling. Summary of the Invention

[0008] To address the aforementioned technical problems, this utility model provides a clog-resistant twin-screw continuous production device for silicone sealant, which solves the problem of easy clogging at the discharge port and sampling port, and has a simple structure and good anti-clogging effect.

[0009] To achieve the above objectives, this utility model provides a clog-resistant twin-screw continuous production device for silicone sealant. The motor is connected to the drive shaft, the drive shaft is connected to one end of the twin-screw production device, and the other end of the twin-screw production device is connected to the discharge port. The discharge port is provided with a sampling port, which is connected to an easy-cleaning device.

[0010] Preferably, the sampling port is provided with a sampling port thread, and the easy-cleaning device is provided with an easy-cleaning device thread; the sampling port thread and the easy-cleaning device thread cooperate with each other to connect the sampling port and the easy-cleaning device thread.

[0011] Preferably, the width of the sampling port thread that mates with the easy-cleaning device thread is 10-30 mm.

[0012] More preferably, the width of the sampling port thread that mates with the easy-cleaning device thread is 15-25 mm.

[0013] More preferably, the easy-cleaning device is a polytetrafluoroethylene, polypropylene, or high-density polyethylene pipe with an inner diameter of 25-150 mm and a wall thickness of 2.5-5.0 mm; the length of the pipe without the easy-cleaning device thread is 50-150 mm.

[0014] More preferably, the length of the pipe without easy-to-clean threads is 80-100mm.

[0015] More preferably, the sampling port is provided with a sealing gasket.

[0016] Preferably, the twin-screw production device is provided with a feed inlet.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. Connect an easy-cleaning device to the sampling port via a thread. The easy-cleaning device is made of polytetrafluoroethylene, polypropylene, or high-density polyethylene tubing. After the silicone sealant has cured into an elastomer, it has low adhesion to the easy-cleaning device, so the sealant can be easily removed without leaving any residue. This greatly improves sampling efficiency, reduces waste adhesive, and completely solves the problem of blockage at the discharge port or sampling port.

[0019] 2. The length of the easy-cleaning device without the easy-cleaning thread is controlled at 80-100mm, while the length with the easy-cleaning thread is controlled at 15-25mm. This prevents external moisture from entering the sampling port and avoids the silicone sealant from curing and forming an elastomer that adheres to the metal sampling port, causing blockage and making cleaning difficult. Furthermore, a sealing gasket is installed at the sampling port to further prevent moisture from entering and to prevent the silicone sealant from curing at the sampling port, further avoiding blockage problems.

[0020] 3. This utility model has a simple structure, good anti-clogging effect, and wide applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram showing the connection between the sampling port and the easy-to-clean device.

[0023] In the diagram, 1 is the motor, 2 is the drive shaft, 3 is the feed inlet, 4 is the twin-screw production device, 5 is the discharge outlet, 6 is the sampling port, 7 is the easy-cleaning device, 8 is the sampling port thread, 9 is the easy-cleaning device thread, and 10 is the sealing gasket. Detailed Implementation

[0024] The technical solution of this utility model will be further explained below with reference to the accompanying drawings and specific embodiments. It is worth noting that the following embodiments are only preferred embodiments of this utility model and should not be construed as limiting this utility model. The protection scope of this utility model should be determined by the content of the claims. Modifications or substitutions made by those skilled in the art to the technical solution of this utility model without creative effort all fall within the protection scope of this utility model.

[0025] Example 1

[0026] like Figure 1-2 As shown, a clog-resistant twin-screw continuous production device for silicone sealant includes a motor 1 connected to a drive shaft 2, which is connected to one end of a twin-screw production device 4. The other end of the twin-screw production device 4 is connected to a discharge port 5. The motor 1 provides power to the drive shaft 2, which in turn drives the twin-screw production device 4 to produce silicone sealant. The produced silicone sealant is discharged from the discharge port 5. A sampling port 6 is provided on the discharge port 5 for convenient sampling. The sampling port 6 is connected to an easy-cleaning device 7 to ensure smooth sampling, reduce the contact between the silicone sealant and air, thereby ensuring that the appearance of the sample is consistent with that of the discharge port 5, ensuring testing efficiency, and reducing the generation of waste sealant.

[0027] Preferably, the sampling port 6 is provided with a sampling port thread 8, and the easy-cleaning device 7 is provided with an easy-cleaning device thread 9; the sampling port thread 8 and the easy-cleaning device thread 9 cooperate with each other to make the sampling port 6 and the easy-cleaning device 7 threadedly connected, which facilitates the disassembly of the easy-cleaning device 7 and reduces the cleaning difficulty of the sampling port 6 and the easy-cleaning device 7.

[0028] Preferably, the width of the sampling port thread 8 and the easy-cleaning device thread 9 that mate with each other is 10-30mm, which prevents external moisture from penetrating into the pipe of the sampling port through the thread and causing the silicone sealant to solidify and cause blockage; at the same time, it can also ensure the stable connection between the sampling port 6 and the easy-cleaning device 7.

[0029] More preferably, the width of the sampling port thread 8 and the easy-cleaning device thread 9 that mate with each other is 15-25mm.

[0030] Further preferably, the easy-cleaning device 7 is made of polytetrafluoroethylene, polypropylene, or high-density polyethylene tubing, which reduces the bonding strength of the cured silicone sealant to the closure, allowing the cured elastomer to be easily removed without leaving residue. This greatly improves sampling efficiency, reduces waste adhesive generation, and completely solves the problem of blockage at the sampling port 6 and the discharge port 5. The inner diameter of the easy-cleaning device 7 is 25-150mm, which is basically the same as the outer diameter of the sampling port 6 for easy fitting. The wall thickness is 2.5-5.0mm. The length of the tubing without the easy-cleaning device thread 9 is 50-150mm, preventing external moisture from seeping from the easy-cleaning device 7 into the discharge port 6, thus preventing the silicone sealant from curing and causing blockage.

[0031] More preferably, the length of the pipe without the easy-cleaning device thread 9 is 80-100mm.

[0032] More preferably, the sampling port 6 is provided with a sealing gasket 10 to further prevent external moisture from entering the sampling port 6 and to avoid the silicone sealant from curing and clogging the pipe.

[0033] Preferably, the twin-screw production device 4 is provided with a feed inlet 3 to facilitate the injection of various production raw materials into the twin-screw production device 4.

Claims

1. A twin-screw continuous production apparatus for anti-clogging silicone sealant, characterized in that: The motor (1) is connected to the drive shaft (2), the drive shaft (2) is connected to one end of the twin-screw production device (4), the other end of the twin-screw production device (4) is connected to the discharge port (5), the discharge port (5) is provided with a sampling port (6), and the sampling port (6) is connected to the easy-cleaning device (7).

2. The anti-clogging twin-screw continuous production device for silicone sealant according to claim 1, characterized in that: The sampling port (6) is provided with a sampling port thread (8), and the easy-cleaning device (7) is provided with an easy-cleaning device thread (9); the sampling port thread (8) and the easy-cleaning device thread (9) cooperate with each other to make the sampling port (6) and the easy-cleaning device (7) threadedly connected.

3. The anti-clogging twin-screw continuous production device for silicone sealant according to claim 2, characterized in that: The width of the sampling port thread (8) and the easy-cleaning device thread (9) that mate with each other is 10-30mm.

4. A twin-screw continuous production apparatus for anti-clogging silicone sealant according to claim 1 or 2, characterized in that: The easy-cleaning device (7) is a polytetrafluoroethylene, polypropylene or high-density polyethylene pipe with an inner diameter of 25-150 mm and a wall thickness of 2.5-5.0 mm; the length of the pipe without the easy-cleaning device thread (9) is 50-150 mm.

5. A twin-screw continuous production apparatus for anti-clogging silicone sealant according to claim 1 or 2, characterized in that: The sampling port (6) is provided with a sealing gasket (10).

6. The anti-clogging twin-screw continuous production apparatus for silicone sealant according to claim 1, characterized in that: The twin-screw production device (4) is equipped with a feed inlet (3).

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