Oil bath device and polyester fiber production line

Abstract

The utility model discloses an oil bath device and a polyester fiber production line, the oil bath device comprises an oiling agent bath, a distribution pipe located above the liquid level in the oiling agent bath, an oiling agent circulating flow channel and a spraying control part, the distribution pipe is provided with a plurality of spraying parts facing the liquid level in the oiling agent bath, and the spraying parts face the oiling agent bath. One end of the oiling agent circulating flow channel is communicated with the distribution pipe, and the other end of the oiling agent circulating flow channel is communicated with liquid in the oiling agent bath; the spraying control component can monitor the height of foam in the oiling agent bath tank and / or the speed of a drafting line used in cooperation with the oiling agent bath tank so as to control the spraying amount of the spraying component, spraying of an oiling agent can be used for eliminating foam, no chemical defoaming agent needs to be added, and the spraying device is environmentally friendly, small in occupied space and high in practicability. And the transformation and maintenance cost is low. In addition, the utility model further discloses a polyester fiber production line which comprises the oil bath device.

Description

Technical Field

[0001] This utility model relates to textile technology, specifically to an oil bath device. It also relates to a polyester fiber production line. Background Technology

[0002] Oil is an important auxiliary agent in the production and processing of polyester fibers. During the processing of polyester fibers, a large amount of foam is generated on the surface of the fiber bundle due to the circulation, flow and impact of the oil. Excessive foam will overflow the bath, causing oil spillage, resulting in resource waste and environmental pollution. At the same time, a large amount of foam will affect the observation of the state of the fiber bundle in the bath.

[0003] Currently, traditional defoaming technologies mostly involve fan defoaming and adding chemical defoamers. Fan defoaming uses a centrifugal fan to draw foam from the bath into a cyclone separator through an air inlet and pipes. Under centrifugal force, the foam disperses and breaks down into liquid, which then flows back into the bath through pipes. However, its installation location is limited. Due to interference with the fiber position, the air inlet cannot completely cover the entire rectangular bath, and the air inlet can only be installed on one side, allowing foam to still overflow from the other sides. Secondly, it requires a large space, as the fan, separator, platform, and ductwork all require considerable space to be arranged. At the same time, the centrifugal fan is located above the separator, which is not conducive to maintenance. Moreover, the narrow and long air inlet results in a large air volume in the middle and a smaller air volume on the sides, meaning that foam on the sides cannot be completely drawn in and will still overflow from the bath, resulting in limited defoaming effect. Chemical defoamers defoam by creating differences in foam surface tension or localized thinning of the liquid film. Their main component is organosilicon. Adding defoamers can alter the original composition of the oil, making it difficult to prepare. Furthermore, excessive addition can affect fiber quality and produce viscous substances in the oil, clogging the filter screen and affecting normal production operations. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an oil bath device that eliminates foam by spraying during the oil circulation process without adding any chemical defoamers, making it green and environmentally friendly. At the same time, the spraying components occupy little space, and the modification and subsequent maintenance costs of existing oil bath devices are low.

[0005] To address the aforementioned technical problems, this utility model provides an oil bath device, comprising an oil bath tank, a distribution pipe located above the liquid surface in the oil bath tank, an oil circulation channel, and a spray control component. The distribution pipe is equipped with multiple spray components facing the liquid surface in the oil bath tank. One end of the oil circulation channel is connected to the distribution pipe, and the other end is connected to the liquid in the oil bath tank. The spray control component can monitor the foam height in the oil bath tank and / or the drawing speed used in conjunction with the oil bath tank to control the spray volume of the spray components.

[0006] Preferably, the spray control component includes a control valve located on the oil circulation channel and a monitoring element for monitoring the foam height in the oil bath and / or the drawing speed used in conjunction with the oil bath, wherein the control valve is electrically connected to the monitoring element.

[0007] More preferably, the monitoring device is a velocimeter for measuring the moving speed of the drawn wire.

[0008] More preferably, the monitoring device is a foam height detection device located in the oil bath, and the foam height detection device is selected from at least one of photoelectric sensor, radio frequency capacitive level gauge, radar level gauge and ultrasonic level gauge.

[0009] More preferably, the foam height detection device includes a first photoelectric sensor located above the liquid level in the oil bath and a second photoelectric sensor located in the oil bath and above the first photoelectric sensor, both of which are electrically connected to the control valve.

[0010] Preferably, the oil circulation channel is provided with a first filter, a pump, a shut-off valve and a second filter in sequence along the outflow direction, and the pore size of the first filter is smaller than that of the second filter.

[0011] More preferably, a diversion component is provided on the oil circulation channel to form a branch channel that communicates with the oil bath, and the diversion component is located between the pump and the shut-off valve.

[0012] More preferably, a pressure monitoring device is also provided on the oil circulation channel, the pressure monitoring device is electrically connected to the alarm system, and the pressure monitoring device is located at the connection end between the oil circulation channel and the distribution pipe.

[0013] Preferably, the oil circulation channel is further provided with a flow meter for monitoring the amount of liquid entering the distribution pipe, and the flow meter is electrically connected to the spray control component.

[0014] Preferably, the spraying component is a conical nozzle and / or an omnidirectional nozzle.

[0015] More preferably, the oil bath is provided with at least two impregnation rollers, the distribution pipe is arranged in a ring around the periphery of each impregnation roller, and the spraying components are spaced apart on the periphery of each impregnation roller; and / or the distribution pipe is arranged along the periphery of the oil bath, and the spraying components are spaced apart on the distribution pipe.

[0016] The second aspect of this utility model provides a polyester fiber production line, including the aforementioned oil bath device.

[0017] Through the above technical solution, this utility model provides an oil bath device, including an oil bath tank, a distribution pipe located above the liquid surface in the oil bath tank, an oil circulation channel, and a spray control component. The distribution pipe is equipped with multiple spray components facing the liquid surface in the oil bath tank. One end of the oil circulation channel is connected to the distribution pipe, and the other end is connected to the liquid in the oil bath tank. The spray control component can monitor the foam height in the oil bath tank and / or the drawing speed used in conjunction with the oil bath tank to control the spray volume of the spray components. By monitoring the spray control component and coordinating with the response of the spray components, the spray volume is adjusted to ensure that the foam is always under control. The foam is eliminated by spraying the oil itself, eliminating the need for any chemical defoamers, making it environmentally friendly. It also has a small footprint, low modification and maintenance costs, and ensures continuous production and stable product quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the oil circulation channel of this utility model;

[0020] Figure 2 This is a schematic diagram of the sensor-controlled oil bath device of this utility model;

[0021] Figure 3 A schematic diagram of the distribution pipe arrangement according to a specific embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the distribution pipe arrangement in another specific embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Pump; 2. Diverter; 3. Shut-off valve; 4. Second filter; 5. Control valve; 6. Pressure monitoring device; 7. Oil circulation channel; 7-1. Distribution pipe; 8. Spraying device; 9. Oil bath; 10. Branch channel; 11. First filter; 12. Flow meter; 1301. First photoelectric sensor; 1302. Second photoelectric sensor; 14. Three-way valve; 15. Impregnation roller. Detailed Implementation

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The detailed descriptions and accompanying drawings of the following embodiments are used to exemplarily illustrate the principles of this utility model, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims. The orientations or positional relationships indicated by terms such as "upper," "lower," "inner," and "outer" are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Parallel" is not strictly parallel, but within the permissible range of error. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0027] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0028] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0030] See Figures 1 to 4This utility model provides an oil bath device, including an oil bath tank 9, a distribution pipe 7-1 located above the liquid surface in the oil bath tank 9, an oil circulation channel 7, and a spray control component. The distribution pipe 7-1 is provided with a plurality of spray components 8 facing the liquid surface in the oil bath tank 9. One end of the oil circulation channel 7 is connected to the distribution pipe 7-1, and the other end is connected to the liquid in the oil bath tank 9. The spray control component can monitor the foam height in the oil bath tank 9 and / or the drawing speed used in conjunction with the oil bath tank 9, so as to control the spray volume of the spray components 8.

[0031] The oil bath device provided by this utility model can be applied to oil bath stretching treatment of any kind of fiber. Taking polyester fiber as an example, the specific process of oil bath and defoaming is as follows:

[0032] In the oil bath drawing process of polyester fibers, the impregnation roller 15 ensures sufficient contact and uniform treatment between the fiber and the oil. The impregnation roller not only guides the polyester fibers through the oil bath but also helps maintain appropriate fiber tension, ensuring smooth operation without tangling or knotting. As the polyester fibers pass through the impregnation roller 15, they are pressed into the oil, ensuring that each fiber fully contacts the oil, achieving comprehensive and uniform impregnation. During this process, air is introduced into the oil, forming bubbles. As the polyester fibers pass through the impregnation roller, they continuously enter and exit the oil surface. This repeated entry and exit agitates the oil surface, causing air to mix into the oil, thus generating foam, along with other foam-generating factors. The moving speed of the polyester fibers during the oil bath drawing process is called the drawing linear velocity, which determines the residence time of the fiber in the oil. If the speed is too high, the fiber may not fully absorb the oil, affecting lubrication and antistatic effects; if the speed is too slow, it may lead to excessive oil absorption, increasing costs and affecting subsequent processes.

[0033] In the defoaming process, the oil is drawn from the oil bath 9 through the oil circulation channel 7 and transported to the distribution pipe 7-1 located above the liquid surface in the oil bath. The distribution pipe 7-1 redistributes the oil to multiple spray components 8, each spray component 8 facing the liquid surface in the oil bath 9. The oil then flows back into the oil bath 9 through the oil circulation channel 7, forming a closed circulation system. The spray control component monitors the foam height and / or stretching linear velocity in the oil bath 9 and dynamically adjusts the spray components 8 based on the monitored data. If excessive foam is detected, the spray control component will increase the spray volume to help eliminate the foam. If the drawing speed changes, the spray volume will also be adjusted accordingly. By rationally arranging the spray components 8 around the oil bath 9, the entire foam-generating area can be effectively covered. The spray of the oil itself is used to suppress and eliminate foam without the need to add additional chemical defoamers or install other auxiliary production equipment. It is green and environmentally friendly, does not increase additional costs, and does not affect the quality of the oil and fiber.

[0034] In some embodiments, the spray control component includes a control valve 5 located on the oil circulation channel 7 and a monitoring element for monitoring the foam height and / or the drawing speed in conjunction with the oil bath 9. The control valve 5 is electrically connected to the monitoring element and is installed on the oil circulation channel 7. By opening, closing, or adjusting its opening, the control valve 5 controls the amount of oil drawn from the oil bath 9 and redistributed to the spray component 8 through the distribution pipe 7-1. The control valve 5 is electrically connected to the monitoring element and can respond in real time based on the foam height and / or drawing speed data provided by the monitoring element. If an increase in foam height or a change in drawing speed is detected, the control valve 5 will adjust its opening accordingly to change the amount of oil sprayed. The linkage between the control valve 5 and the monitoring element enables automatic control of the system, reduces the need for manual intervention, improves the automation level of the production process, and reduces dependence on chemical defoamers by effectively controlling foam generation, thereby reducing the potential risks of chemicals to the environment and the health of operators.

[0035] In this invention, the control valve 5 can be a pneumatic butterfly valve, regulating valve, solenoid valve, or other types of valve.

[0036] In some embodiments, the monitoring component is a tachometer that measures the moving speed of the drawing line. The tachometer can monitor the moving speed of the drawing line in real time and adjust the opening of the control valve 5 according to the speed of the drawing line, thereby changing the flow rate of the spray component 8. When the speed of the drawing line is greater than 200 m / min, the control valve 5 is automatically opened, and the spray component 8 sprays the foam in the oil bath 9 (i.e., the periphery of the impregnation roller 15 or the foam concentration area). When the drawing line stops or the speed is lower than 200 m / min, the control valve 5 is automatically closed, and the spray component 8 stops spraying. The tachometer and control valve 5 are integrated with the automated control system and support the connection of other components, which facilitates the expansion and upgrading of the oil bath device in the future. Through PLC or other controllers, the defoaming operation is automated through oil circulation, avoiding frequent adjustment of the control valve 5 and helping to reduce operating costs.

[0037] In some embodiments, the monitoring element is a foam height detection element located in the oil bath 9. The foam height detection element is selected from at least one of a photoelectric sensor, a radio frequency capacitive level gauge, a radar level gauge, and an ultrasonic level gauge. The following description uses a photoelectric sensor. The monitoring element adjusts the opening of the control valve 5 according to the foam height so that the spray component 8 can eliminate the foam in the oil bath 9.

[0038] In some embodiments, the foam height detection device includes a first photoelectric sensor 1301 located above the liquid level in the oil bath 9 and a second photoelectric sensor 1302 located in the oil bath 9 and above the first photoelectric sensor 1301. Both the first and second photoelectric sensors 1301 are electrically connected to the control valve 5. The spray control component is connected to the foam height detection device. When the foam height does not obstruct the first and second photoelectric sensors 1301 and 1302, the control valve 5 is closed; when the foam height obstructs the first photoelectric sensor... When the first photoelectric sensor 1301 does not block the second photoelectric sensor 1302, the opening of the control valve 5 is adjusted to a partially open state, such as 40-60% (i.e., half open). When the foam height blocks the second photoelectric sensor 1302, the opening of the control valve 5 is adjusted to 100% (i.e., fully open). The sensors (i.e., the first photoelectric sensor 1301 and the second photoelectric sensor 1302) can provide real-time feedback on the foam height, so that the spray control component can react quickly and adjust the opening of the control valve 5 in time, so that the spray component 8 can perform defoaming operation or stop.

[0039] In this invention, the first filter 11 and the second filter 4 can each be independently a Y-type filter, a basket filter, a T-type filter, or other types of filters, with a Y-type filter being preferred.

[0040] In some embodiments, see Figure 1The oil circulation channel 7 is sequentially equipped with a first filter 11, a pump 1, a shut-off valve 3, and a second filter 4 along the outflow direction. The pore size of the first filter 11 is smaller than that of the second filter 4. The first filter 11 serves as a preliminary filtration device, used to capture larger impurities and particles, protecting downstream equipment from damage caused by large particles. The pump 1 provides power for the oil flow, ensuring smooth flow of the oil within the oil circulation channel 7. The shut-off valve 3 regulates the oil flow rate and the flow path, facilitating later maintenance of the oil circulation channel 7. The second filter 4 serves as a fine filtration device, used to remove small particles that the first filter 11 fails to capture, further improving the purity of the oil. Preferably, the first filter 11 has a mesh size of 5 to 20, and the second filter has a mesh size of 20 to 60. For example, the first filter 11 has a mesh size of 10, and the second filter has a mesh size of 20. Effective filtration reduces the frequency of periodic cleaning or replacement of the oil, lowering maintenance workload and costs. Figure 2 As shown, the oil circulation channel 7 is provided with at least two first filters 11 respectively connected to the oil circulation channel 7, and a three-way valve 14 is provided at the connection point, so that one of the first filters 11 is used as a spare.

[0041] Regarding the circulation process of the oil, it should be noted that the oil flows out of the oil bath 9 and enters the oil circulation channel 7. The oil first passes through the first filter 11, where large particulate impurities are initially removed. After the initial filtration, the oil is pumped by the pump 1 to ensure that the oil can continue to flow. The oil flows through the shut-off valve 3, and the operator can control the flow rate of the oil by adjusting the shut-off valve. The oil passes through the second filter 4 to further remove smaller particles and ensure the purity of the oil. Finally, it flows into the oil bath 9 through the spray component 8.

[0042] In some embodiments, a pressure monitoring device 6 is also provided on the oil circulation channel 7, such as a mechanical pressure gauge, a digital pressure gauge, etc. The pressure monitoring device 6 is electrically connected to the alarm system. The pressure monitoring device 6 is located at the connection end between the oil circulation channel 7 and the distribution pipe 7-1. During the defoaming process, it is necessary to adjust the opening of the control valve 5, and the pressure in the oil circulation channel 7 will change. The pressure monitoring device can provide real-time pressure data to help operators or automated control systems understand the pressure status in the channel in a timely manner, ensuring that the device can operate normally. At the same time, by continuously monitoring the pressure changes in the oil circulation channel 7, it is easy to detect potential problems in the oil circulation channel 7 (such as blockage, leakage, or pump failure) before issuing an early warning that could lead to serious consequences, so as to facilitate timely maintenance.

[0043] In addition, it should be noted that the pressure monitoring component 6 is located between the oil bath 9 and the control valve 5. It monitors the pressure inside the pipe after the oil passes through the control valve 5, which can directly reflect the flow rate of the spray component 8 and help ensure the defoaming effect.

[0044] In some embodiments, a flow meter 12 for monitoring the amount of liquid entering the distribution pipe 7-1 is also provided on the oil circulation channel 7. For example, a turbine flow meter is used. The flow meter 12 is electrically connected to the spray control component and is located near the oil bath 9. Figure 2 As shown, in one embodiment, a turbine flow meter is placed between the pressure monitoring component 6 and the control valve 5 to transmit the flow rate value to the spray control component. A low alarm value is set in the program. When the low alarm value is reached, the control valve 5 is closed and an alarm is triggered on the computer. The opening of the control valve 5 is then readjusted to ensure the defoaming effect. The appropriate opening is adjusted in conjunction with the pressure monitoring component 6 to avoid knocking in the distribution pipe 7-1, which helps to optimize the spraying effect of the spray component 8 and ensure the continuity of the defoaming process.

[0045] In some embodiments, see Figure 2 A diversion component 2 is provided on the oil circulation channel 7 to form a branch channel 10 that connects to the oil bath 9. The diversion component 2 is located between the pump 1 and the shut-off valve 3. A valve is provided on the branch channel 10. When spraying is not required, the valve on the branch channel 10 is opened. Previously, it was kept closed to ensure that the spraying component 8 has a sufficient flow rate for spraying. The oil is allowed to flow back directly to the oil bath 9 through the branch channel. This process allows the oil to complete circulation without passing through the spraying control component, thereby achieving continuous filtration. The first filter 11 can continue to work during this period, which helps to ensure the purity of the oil. Oil circulation through the branch channel 10 can avoid unnecessary spraying operations, which helps to extend the service life or maintenance cycle of the spraying component 8. The existence of the branch channel 10 allows the system to flexibly adjust the flow path of the oil according to actual production needs.

[0046] In some embodiments, the spraying component 8 is a conical nozzle and / or an omnidirectional nozzle. The spraying component 8 faces the interior of the oil bath 9 and is a certain height above the oil surface. The oil sprayed from the spraying component 8 in a planar manner falls from top to bottom onto the foam, which can dissolve the foam. At the same time, the impact of the sprayed oil can break the foam, thereby achieving the purpose of defoaming. In addition, a filter screen can be installed on the spraying component 8; for example, the pre-nozzle filter screen of the omnidirectional nozzle is selected as 40 mesh, and the nozzle filter screen of the conical nozzle is selected as 40 mesh. Conical nozzles and omnidirectional nozzles can be used simultaneously in the distribution pipe 7-1, with the two arranged alternately. The conical nozzle causes the foam to gather towards the center of the oil bath, and together with the omnidirectional nozzle, it dissolves and breaks the foam pushed to the center of the oil bath.

[0047] In some embodiments, see Figure 3 and Figure 4 The oil bath 9 is equipped with at least two impregnation rollers 15. The distribution pipe 7-1 is arranged in a ring around the periphery of each impregnation roller 15. The spraying components 8 are distributed at intervals around the periphery of each impregnation roller 15. And / or the distribution pipe 7-1 is arranged around the periphery of the oil bath 9, and the spraying components 8 are distributed at intervals on the distribution pipe 7-1. The distribution pipe 7-1 surrounds the periphery of the oil bath 9, so that the spraying components completely cover the foam generation area. The oil sprayed by the spraying components 8 can push the foam from the periphery of the bath to the center of the bath, avoiding the foam from overflowing from the edge. During the production operation, the foam at the impregnation roller 15 is relatively concentrated and numerous. Placing the distribution pipe 7-1 around the periphery of the two impregnation rollers 15 is beneficial to improving the foam elimination efficiency.

[0048] To better understand the technical content provided by this utility model, the following description is based on a preferred embodiment.

[0049] This utility model provides an oil bath device, see [link]. Figures 2 to 4The system includes an oil bath 9, a distribution pipe 7-1 located above the liquid surface in the oil bath 9, an oil circulation channel 7, and a spray control component. The distribution pipe 7-1 is equipped with multiple spray components 8 facing the liquid surface in the oil bath 9. The spray components 8 are conical nozzles and omnidirectional nozzles. One end of the oil circulation channel 7 is connected to the distribution pipe 7-1, and the other end is connected to the liquid in the oil bath 9. The spray control component includes a control valve 5 located on the oil circulation channel 7 and a monitoring device for monitoring the foam height in the oil bath 9. The control valve 5 is electrically connected to the monitoring device, which is a foam height detection device located in the oil bath 9. The foam height detection device is a photoelectric sensor. The control valve 5 is a pneumatic regulating valve. The foam height detection device includes a first photoelectric sensor 1301 located above the liquid level in the oil bath 9 and a second photoelectric sensor 1302 located in the oil bath 9 and above the first photoelectric sensor 1301. Both the first photoelectric sensor 1301 and the second photoelectric sensor 1302 are electrically connected to the control valve 5. The oil circulation channel 7 is sequentially arranged with a first filter 11, a pump 1, a shut-off valve 3, and a second filter 4 along the outflow direction. The first filter 11 and the second filter 4 are each independently Y-type filters. The first filter 11 has a mesh size of 10 mesh, and the second filter 4 has a mesh size of 20 mesh. The oil circulation channel 7 is also equipped with a pressure monitoring device 6 and a flow meter 12. The pressure monitoring device 6 is electrically connected to the alarm system and is located at the connection end between the oil circulation channel 7 and the distribution pipe 7-1. The flow meter 12 is connected to the spray control component. Electrically connected, flow meter 12 is located near oil bath 9, flow meter 12 is installed on oil circulation channel 7 to monitor the amount of liquid entering distribution pipe 7-1, flow meter 12 is electrically connected to spray control component, flow divider 2 forms branch channel 10 to communicate with oil bath 9, flow divider 2 is located between pump 1 and shut-off valve 3, oil bath 9 is provided with at least two impregnation rollers 15, distribution pipe 7-1 is arranged in a ring along the periphery of each impregnation roller 15, spray component 8 is distributed at intervals on the periphery of each impregnation roller 15.

[0050] The working process and effects of the oil bath device are explained as follows: When the foam height in the oil bath tank 9 reaches the preset height of the first photoelectric sensor 1301, the pump 1 starts working. After receiving the signal, the control valve 5 opens to 40-60% of its opening. The spray component 8 eliminates the foam in the oil bath tank 9. If the foam continues to rise and touches the height of the second photoelectric sensor 1302, the control valve 5 receives the signal and opens fully until the foam height falls back to a safe range. Then, the control valve 5 closes. If oil circulation is required, it can be done through the branch channel 10. The defoaming process does not require manual intervention. Relying on the monitoring of the photoelectric sensor and the response of the spray control component, the control valve 5 is adjusted to ensure that the foam is always under control. The foam is eliminated by spraying the oil itself, without the need to add any chemical defoamers. It is green and environmentally friendly, occupies little space, has low modification and maintenance costs, and ensures the continuity of production and the stability of product quality.

[0051] This utility model also provides a polyester fiber production line, including the above-mentioned oil bath device. Therefore, the polyester fiber production line has all the beneficial effects of the oil bath device, which will not be described in detail here.

[0052] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0053] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. An oil bath device, characterized by, The oil bath device comprises an oil bath tank (9), a distribution pipe (7-1) above the liquid level in the oil bath tank (9), a plurality of spray components (8) on the distribution pipe (7-1) towards the liquid level in the oil bath tank (9), an oil circulation flow channel (7) in communication with the distribution pipe (7-1) at one end and in communication with the liquid in the oil bath tank (9) at the other end, and a spray control component capable of monitoring the foam height in the oil bath tank (9) and / or the drafting line speed used in cooperation with the oil bath tank (9) to control the spray amount of the spray components (8).

2. The oil bath device according to claim 1, characterized by The spray control component comprises a control valve (5) on the oil circulation flow channel (7) and a monitoring component for monitoring the foam height in the oil bath tank (9) and / or the drafting line speed used in cooperation with the oil bath tank (9), and the control valve (5) is electrically connected with the monitoring component.

3. The oil bath device of claim 2, wherein The monitoring component is a speed detector for detecting the moving speed of the drafting line.

4. The oil bath device of claim 2, wherein The monitoring component is a foam height detection component in the oil bath tank (9), and the foam height detection component is selected from at least one of a photoelectric sensor, a radio frequency capacitive liquid level meter, a radar liquid level meter and an ultrasonic liquid level meter.

5. The oil bath device of claim 4, wherein The foam height detection component comprises a first photoelectric sensor (1301) above the liquid level in the oil bath tank (9) and a second photoelectric sensor (1302) in the oil bath tank (9) above the first photoelectric sensor (1301), and the first photoelectric sensor (1301) and the second photoelectric sensor (1302) are electrically connected with the control valve (5).

6. The oil bath device according to any one of claims 1 to 5, characterized in that, The oil circulation flow channel (7) is sequentially provided with a first filter (11), a pump (1), a stop valve (3) and a second filter (4) in the flow direction, and the aperture number of the first filter (11) is smaller than that of the second filter (4).

7. The oil bath device of claim 6, wherein The oil circulation flow channel (7) is provided with a shunt component (2) in communication with the oil bath tank (9) through a branch channel (10), and the shunt component (2) is located between the pump (1) and the stop valve (3).

8. The oil bath device according to any one of claims 1 to 5, characterized by The oil circulation flow channel (7) is further provided with a pressure monitoring component (6) electrically connected with an alarm system, and the pressure monitoring component (6) is located at the connection end of the oil circulation flow channel (7) and the distribution pipe (7-1).

9. The oil bath device according to any one of claims 1 to 5, characterized by The oil circulation flow channel (7) is further provided with a flow meter (12) for monitoring the liquid amount entering the distribution pipe (7-1), and the flow meter (12) is electrically connected with the spray control component.

10. The oil bath device according to any one of claims 1 to 5, characterized by The spray components (8) are conical nozzle components and / or omnidirectional nozzle components.

11. The oil bath device according to any one of claims 1 to 5, characterized by The oil bath tank (9) is provided with at least two immersion rollers (15), the distribution pipe (7-1) is arranged annularly along the circumferential side of each immersion roller (15), and the spray components (8) are distributed at intervals on the circumferential side of each immersion roller (15); and / or The distribution pipe (7-1) is arranged along the circumferential side of the oil bath (9), and the spray members (8) are distributed at intervals on the distribution pipe (7-1).

12. A terylene fiber production line characterized by, The oil bath device according to any one of claims 1 to 11. The oil bath device according to any one of claims 1 to 11.

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