Non-contact quartz fiber impregnating compound coating device

Abstract

The invention discloses a non-contact quartz fiber impregnating compound coating device which comprises a coating box body used for containing an impregnating compound, a splashing gear is arranged in the coating box body, a circle of spoon-shaped teeth are arranged on the outer side of the splashing gear, and part of the splashing gear is immersed in the impregnating compound. The splashing gear is driven by a motor to rotate and then drives the impregnating compound to fly away from the coating box body. The device has the beneficial effects that non-contact coating is achieved, the using amount of the impregnating compound is automatically adjusted, and the temperature of the impregnating compound is automatically adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of quartz fiber production and processing, in particular to a device for coating quartz fiber with a sizing agent. Background Art

[0002] During the production process of quartz fiber, it is necessary to coat its surface with a sizing agent. This step not only improves the bonding and lubrication properties of the monofilament, thus facilitating subsequent processing, but also improves certain defects and surface properties of the quartz fiber.

[0003] The current sizing agent coating technology still faces many challenges, including uneven coating, long drying time, and the need for manual addition of sizing agent. In addition, the current sizing agent coating devices are mostly contact-type oil-coating rollers. The long-term friction between the oil-coating roller and the quartz fiber will cause small grooves on the surface, thereby wearing the fiber and even causing it to break. These factors have led to a high defective rate of fibers and a corresponding reduction in production efficiency. To this end, we propose a non-contact quartz fiber sizing agent coating device. Summary of the invention

[0004] The object of the present invention is to provide a stable and uniform non-contact quartz fiber sizing agent coating device to solve the problems raised in the prior art.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A non-contact quartz fiber impregnation agent coating device comprises a coating box body for containing impregnation agent, wherein a splash gear is arranged in the coating box body, a circle of spoon-shaped teeth is arranged on the outer side of the splash gear, a part of the splash gear is immersed in the impregnation agent, and the splash gear is driven to rotate by a motor to drive the impregnation agent to fly away from the coating box body.

[0006] As a preferred solution, the splash gear is made of rubber, ceramic, graphite or metal with chrome sprayed on the surface.

[0007] As a preferred solution, the inner radial cross-section of the coating box body is an arc-shaped structure.

[0008] As a preferred solution, a coating box cover is fixed on the coating box body.

[0009] As a preferred solution, a wetting agent input pipe and a wetting agent recovery pipe are provided at the bottom of the coating box.

[0010] As a preferred solution, the infiltrant input pipe is located in a small recessed groove at the bottom of the coating box; the pipe opening of the infiltrant recovery pipe is an arc-shaped groove, and the arc of the arc-shaped groove is in the range of 30 degrees to 60 degrees.

[0011] As a preferred solution, a cooling device is provided on the coating box body or the coating box cover, and the cooling device includes a cooling liquid inlet pipe and a cooling liquid outlet pipe.

[0012] As a preferred solution, a shield is provided on the coating box body or the coating box cover.

[0013] As a preferred solution, the shield is a flippable structure.

[0014] The beneficial effects of the present invention are: The splashing gear in the present invention uses a non-contact method to throw out the sizing agent, and when the quartz fiber passes through the coating box cover, the sizing agent can be densely and evenly coated on its surface. This method not only avoids the contact oiling roller from wearing the fiber surface, but also avoids the excessive coating of the sizing agent leading to the extension of the fiber drying time.

[0015] The invention uses the cooperation of the impregnating agent input pipe and the impregnating agent recovery pipe to ensure that the quartz fiber can always be coated with fresh impregnating agent. Excess impregnating agent can flow into the recovery system through the impregnating agent recovery pipe and be recycled after being processed, thereby reducing the loss of impregnating agent. Compared with the existing method of using an oil storage box to store impregnating agent, there will be no problem of impregnating agent being layered and precipitated in the oil box, resulting in poor impregnating agent coating and affecting product quality.

[0016] The cooling device in the present invention can maintain the temperature of the wetting agent. The coating box cover and the shielding plate can also prevent the influence of external high temperature on the inside of the coating box body, and prevent external pollution and protect the splashing gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the coating device structure of the present invention.

[0018] Figure 2 It is a left side cross-sectional view of the coating device structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the use effect of the present invention.

[0020] Markings in the figure: 1-coating box body, 2-rotating shaft, 3-splashing gear, 4-motor, 5-coating box cover, 6-shield, 7-cooling device, 71-cooling liquid inlet pipe, 72-cooling liquid outlet pipe, 8-wetting agent input pipe, 9-wetting agent recovery pipe. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings.

[0022] A quartz fiber sizing coating device comprises a coating box, a splash gear, a coating box cover, a shield, a cooling device, a sizing agent input pipe and a sizing agent recovery pipe. Coating box: The sizing agent is contained inside. The bottom of the coating box is provided with a sizing agent input pipe and a sizing agent recovery pipe for controlling the inflow and recovery of the sizing agent. Splash gear: It is fixed on the rotating shaft in the coating box, and the bottom end is immersed below the sizing agent liquid surface. The motor drives the rotating shaft and the splash gear to rotate. There is a circle of spoon-shaped teeth on the outside of the splash gear, which can throw out the sizing agent when rotating and evenly splash it on the surface of the quartz fiber. The splash gear can be made of rubber, ceramic, graphite or metal with chromium sprayed on the surface to adapt to different working environments and requirements. Coating box cover: It is located above the splash gear and is provided with a cooling device. The main function of the coating box cover is to shield and protect, prevent quartz particles, impurities, dust and other pollutants from entering the coating box, and block high temperature. Shield: It is a flippable structure, located at the upper back of the coating box cover under normal working conditions. When abnormal situations such as broken ends and flying wires occur, the shield can be flipped to the front upper part of the coating box cover to prevent abnormal quartz fibers from contacting the coating box cover and ensure the normal operation of the equipment. Cooling device: includes a coolant inlet pipe and a coolant outlet pipe, which are used to keep the impregnant at the required temperature. Impregnant input pipe and impregnant recovery pipe: The impregnant input pipe is located in a small groove concave at the bottom of the coating box body, which can reduce the local liquid level fluctuation when the impregnant enters the coating box body. The height of the impregnant recovery pipe extending into the coating box body can be adjusted according to the actual liquid level height of the impregnant, generally in the range of 20 mm to 40 mm; the pipe mouth of the impregnant recovery pipe is designed as an arc-shaped groove, which can timely and stably guide the excess impregnant to ensure the stability of the impregnant liquid level. The curvature of the arc-shaped groove can be specifically designed according to the type of impregnant, generally in the range of 30 degrees to 60 degrees.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, a quartz fiber sizing agent coating device includes a coating box body 1, the interior of the coating box body 1 is a hollow structure for placing the sizing agent, and the radial cross-section inside the coating box body 1 is usually an arc-shaped structure. A coating box cover 5 is fixed to the coating box body 1. When the coating device is not in use, the coating box cover 5 can cover the gap of the coating box body 1 to prevent contaminants from entering the coating box body 1 to contaminate the sizing agent.

[0024] In order to put the impregnant into the coating device, the coating box cover 5 can be opened and the impregnant can be poured in. The disadvantage of this approach is that it is difficult to add the impregnant during the production process, and even production needs to be stopped. For this reason, the present application sets an impregnant input pipe 8 and an impregnant recovery pipe 9 at the bottom of the coating box body 1. The advantage is that the amount of the impregnant inside the coating box body 1 can be dynamically adjusted in real time through the impregnant input pipe 8 and the impregnant recovery pipe 9. The impregnant input pipe 8 is located in a small groove concave at the bottom of the coating box body, which can reduce the local liquid level fluctuation when the impregnant enters the coating box body. The height of the impregnant recovery pipe 9 extending into the coating box body 1 can be adjusted according to the actual liquid level height of the impregnant, generally in the range of 20 mm to 40 mm; the pipe mouth of the impregnant recovery pipe 9 is designed as an arc groove, which can timely and stably guide the excess impregnant to ensure the stability of the impregnant liquid level. The curvature of the arc groove can be specifically designed according to the type of impregnant, generally in the range of 30 degrees to 60 degrees.

[0025] A rotating shaft 2 is fixed in the coating box body 1; a splashing gear 3 is installed on the rotating shaft 2, and the splashing gear 3 rotates around the rotating shaft 2, and the splashing gear 3 is driven by a motor 4. A part of the splashing gear 3 is immersed under the liquid surface of the wetting agent. When the splashing gear 3 rotates, its motion trajectory forms a circle. In order to match the rotation trajectory of the splashing gear 3, it is preferred to set the internal radial cross-section of the coating box body 1 to an arc-shaped structure. There is a circle of spoon-shaped teeth on the outside of the splashing gear 3, which can throw out the wetting agent when rotating and evenly splash it on the surface of the quartz fiber. The splashing gear 3 can be made of rubber, ceramic, graphite or metal with chromium sprayed on the surface to adapt to different working environments and requirements.

[0026] The coating box cover 5 is arranged above the splashing gear 3. When the coating box cover 5 is opened, the splashing gear 3 can rotate to bring the impregnating agent out of the coating box body 1 for coating the quartz fiber precursor. At the same time, the coating box cover 5 can block a part of the heat brought by the quartz fiber precursor to prevent the temperature of the impregnating agent from being too high. Even so, the long-term operation will cause the coating device to heat up, and then cause the impregnating agent to heat up. For this reason, the present application further provides a cooling device 7 on the coating box body 1 or the coating box cover 5, and the cooling device 7 includes a coolant inlet pipe 71 and a coolant outlet pipe 72. The coolant can usually use circulating water.

[0027] During the drawing process of quartz fiber precursor, a small amount of abnormal situations such as broken ends and flying threads will inevitably occur. For this reason, the present application sets a shield 6 on the coating box body 1 or the coating box cover 5, and the shield 6 is a flippable structure. When abnormal situations such as broken ends and flying threads occur, the shield 6 can be flipped to a position between the coating box cover 5 and the quartz fiber precursor, so that the hanging quartz fiber precursor is blocked by the shield and away from the coating box cover 5, protecting the normal operation of the equipment.

[0028] When the present application is used, the fused silica glass rod is formed into a quartz fiber precursor by the wire drawing device, and the shield 6 is flipped to the upper rear of the coating box cover 5; when the cooled quartz fiber precursor passes through the coating box opening between the coating box body 1 and the coating box cover 5, the rotating splashing gear 3 evenly throws the impregnant onto the surface of the quartz fiber precursor. The quartz fiber precursor passes through the bunching wheel arranged under the coating box body 1, and the quartz fiber precursor is gathered into a strand of quartz fiber, and then wound into a tube.

[0029] The impregnant enters the coating box 1 through the impregnant inlet pipe 8, and keeps the splashing gear 3 partially immersed in the impregnant; the splashing gear 3 rotates at a given speed under the drive of the motor 4, and a layer of liquid film is formed on the surface of the splashing gear 3. The rotation speed of the splashing gear 3 and the height of the splashing gear 3 immersed in the impregnant determine the diameter of the impregnant splash circle formed. The rotation speed of the splashing gear 3, the height of the splashing gear immersed in the impregnant, and the distance between the splashing gear and the quartz fiber precursor jointly affect the effect of the impregnant coating, and the applicant will reveal its principle in another invention patent. When the quartz fiber precursor passes through the surface of the coating box mouth, the liquid film is evenly coated on the surface of the quartz fiber precursor. The cooling device 7 maintains the temperature of the impregnant, wherein the coolant inlet pipe 71 can feed the coolant into the coating box 1, and the coolant flows out from the coolant outlet pipe 72 after circulation to ensure that the impregnant maintains the required temperature. The excess impregnant in the coating box 1 flows into the recovery system through the impregnant recovery pipe 9, and is recycled after treatment.

Claims

1. A non-contact quartz fiber sizing agent coating device, comprising a coating box for containing a sizing agent, characterized in that: The coating box body is provided with a splashing gear, the outer side of the splashing gear is provided with a circle of spoon-shaped teeth, part of the splashing gear is immersed in the wetting agent, and the splashing gear is driven to rotate by a motor to drive the wetting agent to fly away from the coating box body.

2. A non-contact quartz fiber sizing agent coating device according to claim 1, characterized in that: The splash gear is made of rubber, ceramic, graphite or metal with chrome sprayed on the surface.

3. A non-contact quartz fiber sizing agent coating device according to claim 1, characterized in that: The inner radial cross section of the coating box body is an arc-shaped structure.

4. The non-contact quartz fiber sizing agent coating device according to claim 1, characterized in that: A coating box cover is fixed on the coating box body.

5. The non-contact quartz fiber sizing agent coating device according to claim 1, characterized in that: The bottom of the coating box body is provided with an infiltrant input pipe and an infiltrant recovery pipe.

6. A non-contact quartz fiber sizing agent coating device according to claim 5, characterized in that: The infiltrant input pipe is located in a small recessed groove at the bottom of the coating box body; The pipe opening of the infiltrant recovery pipe is an arc-shaped groove, and the curvature of the arc-shaped groove is in the range of 30 degrees to 60 degrees.

7. The non-contact quartz fiber sizing agent coating device according to claim 1, characterized in that: The coating box body or the coating box cover is provided with a cooling device, and the cooling device comprises a cooling liquid inlet pipe and a cooling liquid outlet pipe.

8. The non-contact quartz fiber sizing agent coating device according to claim 1, characterized in that: A shield is arranged on the coating box body or the coating box cover.

9. A non-contact quartz fiber sizing agent coating device according to claim 8, characterized in that: The shield is a flippable structure.

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