Spinning oil defoaming device

Abstract

The utility model relates to the technical field of oiling agent defoaming, in particular to a spinning oiling agent defoaming device which comprises a treatment barrel, a liquid inlet pipe is connected to the bottom of the side wall of the treatment barrel, a plurality of baffle plates are obliquely arranged at the bottom of the inner side wall of the treatment barrel in a staggered mode, a placing table is arranged on the inner side wall of the treatment barrel, and a lipophilic porous filler piece is placed on the placing table. The top of the side wall of the treatment barrel is connected with a liquid outlet pipe, a defoaming weir is arranged at the joint of the liquid outlet pipe and the treatment barrel, the top of the defoaming weir is of a sawtooth structure, the top of the treatment barrel is connected with a vacuum pipe, the vacuum pipe is connected with a vacuum pump, and an on-off valve is arranged on the vacuum pipe; the liquid inlet pipe is arranged at the bottom of the treatment barrel, so that the phenomenon that new bubbles are generated due to impact of a free falling body when an oiling agent is poured from the top is avoided, bubble generation is reduced from the source, foam on the liquid level is intercepted by the defoaming weir, a foam liquid film is damaged through the mechanical cutting action of the sawtooth edges, and it is ensured that no surface foam remains on the discharged oiling agent.

Description

Technical Field

[0001] This utility model relates to the field of oil defoaming technology, and more specifically to a spinning oil defoaming device. Background Technology

[0002] In the various processes of the textile industry, defoaming treatment is a crucial step in the preparation of environmentally friendly nylon spinning oils. Foam generation is unavoidable during both pre- and post-processing in textile manufacturing; therefore, rapid defoaming equipment is needed to help eliminate foam and improve product quality.

[0003] A Chinese utility model patent with publication number CN219128919U discloses a defoaming industrial silk spinning oil processing device, comprising a box, a shell, and a defoaming mechanism. A hopper is fixedly installed on the top of the box, a heating plate is fixedly installed on the inner wall of the box, a stirring rod is installed inside the box, and a motor is fixedly installed on one side of the box. The shell is located at the bottom of the box, a feed pipe is fixedly installed between the shell and the box, and a discharge pipe is fixedly installed at the bottom of the shell. Both the feed pipe and the discharge pipe are equipped with shut-off valves. The defoaming mechanism is located on the shell. This defoaming industrial silk spinning oil processing device can burst air bubbles generated during mixing, facilitates the filtration and defoaming of the oil, and allows for easy squeezing and filtration of the oil, further bursting air bubbles in the oil during this process. These multiple methods effectively reduce the presence of air bubbles in the oil.

[0004] Although the defoaming industrial silk spinning oil processing device has bubble-piercing needles on the stirring arm to eliminate air bubbles while the oil is being stirred, and further reduces air bubbles by squeezing and filtering, the hopper of the device is located above the tank. When the oil is poured into the tank, it is subjected to a large impact, which easily generates air bubbles. In addition, the device can only process a limited amount of oil at a time. When multiple tanks of oil need to be defoamed, the next tank of oil can only be poured into the hopper after the previous tank has been processed. When the workload is large, it affects the work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a defoaming device for spinning oil, which can better eliminate air bubbles in the oil.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A defoaming device for spinning oil includes a treatment tank. An inlet pipe is connected to the bottom of the side wall of the treatment tank. Multiple baffles are staggered and inclined at the bottom of the inner side wall of the treatment tank. A placement platform is provided on the inner side wall of the treatment tank, located above the baffles. An oleophilic porous packing element is placed on the placement platform. An outlet pipe is connected to the top of the side wall of the treatment tank. The connection point between the outlet pipe and the treatment tank is located above the oleophilic porous packing element. A defoaming weir is provided at the connection point between the outlet pipe and the treatment tank. The top of the defoaming weir has a serrated structure. A vacuum tube is connected to the top of the treatment tank and is connected to a vacuum pump. An on / off valve is provided on the vacuum tube.

[0008] Furthermore, a pressure sensor is installed on the top inner side of the processing tank.

[0009] Furthermore, the inlet pipe enters the interior of the processing tank along the tangential direction of the processing tank.

[0010] Furthermore, a flow regulating valve is installed on the inlet pipe.

[0011] Furthermore, the edge of the baffle plate is provided with a bubble cutting angle, which is an acute angle.

[0012] Furthermore, the oleophilic porous packing element is made of polypropylene corrugated plate or metal wire mesh.

[0013] Furthermore, an electric heating plate is embedded in the side wall of the processing barrel.

[0014] Furthermore, a temperature sensor is installed on the top of the inner wall of the processing tank.

[0015] Furthermore, the inner wall of the processing tank is coated with polytetrafluoroethylene.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In this application, the inlet pipe is located at the bottom of the treatment tank to prevent the oil from generating new bubbles due to free fall impact when poured in from the top, thus reducing bubble generation at the source; the baffles are arranged in an alternating and inclined manner to prolong the residence time of the oil; the porous structure of the oleophilic porous packing material is used to adsorb bubbles in the oil and cause them to coalesce on the packing surface; the vacuum tube is connected to the vacuum pump to create a negative pressure environment to reduce the pressure inside the bubbles, promote the rupture of microbubbles, and accelerate the rising speed of large bubbles; the defoaming weir intercepts foam on the liquid surface and destroys the foam liquid film through the mechanical cutting action of the serrated edge, ensuring that there is no surface foam residue in the discharged oil. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the defoaming weir in this utility model.

[0021] 1. Processing tank; 2. Inlet pipe; 3. Baffle plate; 31. Bubble cutting angle; 4. Placement platform; 5. Oleophilic porous packing; 6. Outlet pipe; 7. Defoaming weir; 8. Vacuum tube; 9. On / off valve; 10. Pressure sensor; 11. Flow regulating valve; 12. Electric heating plate; 13. Temperature sensor. Detailed Implementation

[0022] like Figures 1 to 3 As shown, a defoaming device for spinning oil includes a treatment tank 1. An inlet pipe 2 is connected to the bottom of the side wall of the treatment tank 1. Multiple baffles 3 are staggered and inclined at the bottom of the inner side wall of the treatment tank 1. A placement platform 4 is provided on the inner side wall of the treatment tank 1, located above the baffles 3. An oleophilic porous packing element 5 is placed on the placement platform 4. An outlet pipe 6 is connected to the top of the side wall of the treatment tank 1. The connection between the outlet pipe 6 and the treatment tank 1 is located above the oleophilic porous packing element 5. A defoaming weir 7 is provided at the connection between the outlet pipe 6 and the treatment tank 1. The top of the defoaming weir 7 has a serrated structure. A vacuum pipe 8 is connected to the top of the treatment tank 1. The vacuum pipe 8 is connected to a vacuum pump, and an on / off valve 9 is provided on the vacuum pipe 8.

[0023] A pressure sensor 10 is installed on the top inner side of the processing tank 1.

[0024] The liquid inlet pipe 2 enters the interior of the treatment tank 1 along the tangential direction of the treatment tank 1; the liquid inlet pipe 2 is connected along the tangential direction of the treatment tank 1, so that the oil flows along the tank wall in a spiral swirling flow, and the centrifugal force is used to throw the air bubbles toward the center and make them float up quickly, thereby reducing the internal eddies and air entrainment of the liquid.

[0025] A flow regulating valve 11 is installed on the liquid inlet pipe 2; the flow regulating valve 11 controls the liquid inlet flow rate to prevent the liquid from carrying air into the tank due to excessive flow rate, and at the same time, it works with the volume of the treatment tank 1 to adjust the material residence time to ensure sufficient degassing.

[0026] The edge of the baffle plate 3 is provided with a bubble cutting angle 31, which is an acute angle. The bubble cutting angle 31 exerts a mechanical shearing effect on the tough foam of the high viscosity oil, cutting the foam liquid film and eliminating bubbles. Furthermore, the angle range of the bubble cutting angle 31 is 45-60°.

[0027] The oleophilic porous packing element 5 is made of polypropylene corrugated plate or metal wire mesh.

[0028] An electric heating plate 12 is embedded in the side wall of the processing tank 1; the electric heating plate 12 heats the oil, reduces the viscosity of the liquid, and accelerates the rise of bubbles.

[0029] A temperature sensor 13 is installed on the top of the inner wall of the processing tank 1.

[0030] The inner wall of the treatment tank 1 is coated with polytetrafluoroethylene (PTFE). The PTFE coating has hydrophobic properties, which reduces the adhesion and retention of bubbles on the wall surface, avoids foam regeneration caused by "wall bubble nuclei", and reduces the risk of oil adhesion and scaling, making the equipment easier to clean.

[0031] Working principle:

[0032] The oil enters the treatment tank 1 through the inlet pipe 2, which is tangential to the bottom of the treatment tank, at a low speed in a swirling motion to avoid creating new bubbles due to impact on the liquid surface. The staggered and inclined baffles 3 guide the liquid to flow in a zigzag pattern, and the bubble cutting angle 31 cuts the foam along the way, while increasing the gas-liquid contact area. When the liquid flows through the oleophilic porous packing 5, the tiny bubbles are adsorbed by the packing surface and aggregate into large bubbles. In a vacuum environment, the pressure inside the bubbles is lower than the external negative pressure, which causes the bubbles to burst or rise rapidly to the liquid surface. The rising large bubbles form a foam layer on the liquid surface. The sawtooth structure of the defoaming weir 7 intercepts the foam, allowing only a thin layer of liquid to overflow into the outlet pipe 6 through the gap. The remaining microbubbles burst rapidly due to the extremely thin liquid film, ultimately achieving bubble-free discharge.

[0033] This invention improves defoaming efficiency through a five-stage process: "tangential liquid inlet to prevent bubble generation → baffle plate cutting and bubble breaking → packing coalescence and degassing → vacuum heating for synergistic effect → defoaming weir to intercept surface foam". The bottom inlet and top overflow design enables continuous "inlet and outlet" processing, avoiding efficiency loss from waiting in multiple boxes.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A defoaming device for spinning oil, characterized in that: The system includes a treatment tank (1), with an inlet pipe (2) connected to the bottom of the side wall of the treatment tank (1). Multiple baffles (3) are staggered and inclined at the bottom of the inner side wall of the treatment tank (1). A placement platform (4) is provided on the inner side wall of the treatment tank (1). The placement platform (4) is located above the baffles (3). An oleophilic porous packing element (5) is placed on the placement platform (4). An outlet pipe (6) is connected to the top of the side wall of the treatment tank (1). The connection between the outlet pipe (6) and the treatment tank (1) is located above the oleophilic porous packing element (5). An antifoaming weir (7) is provided at the connection between the outlet pipe (6) and the treatment tank (1). The top of the antifoaming weir (7) has a serrated structure. A vacuum pipe (8) is connected to the top of the treatment tank (1). The vacuum pipe (8) is connected to a vacuum pump. An on / off valve (9) is provided on the vacuum pipe (8).

2. The defoaming device for spinning oil as described in claim 1, characterized in that: A pressure sensor (10) is installed on the top inner side of the processing tank (1).

3. The defoaming device for spinning oil as described in claim 1, characterized in that: The inlet pipe (2) enters the interior of the processing tank (1) along the tangential direction of the processing tank (1).

4. The defoaming device for spinning oil as described in claim 3, characterized in that: A flow regulating valve (11) is installed on the inlet pipe (2).

5. The defoaming device for spinning oil as described in claim 1, characterized in that: The edge of the baffle plate (3) is provided with a bubble cutting angle (31), which is an acute angle.

6. The defoaming device for spinning oil as described in claim 1, characterized in that: The oleophilic porous packing element (5) is made of polypropylene corrugated plate or metal wire mesh.

7. The defoaming device for spinning oil as described in claim 1, characterized in that: An electric heating plate (12) is embedded in the side wall of the processing tank (1).

8. The defoaming device for spinning oil as described in claim 7, characterized in that: A temperature sensor (13) is installed on the top of the inner wall of the processing tank (1).

9. The defoaming device for spinning oil as described in claim 1, characterized in that: The inner wall of the processing tank (1) is coated with polytetrafluoroethylene.

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