Heat conducting oil circulation structure and spunbond spinning beam

Abstract

The application discloses a heat-conducting oil circulating structure and a spunbonding spinning box, and a circulating pump is used for circulating heat-conducting oil in heat preservation cylinders in the upper box body and the lower box body in sequence; the heat preservation cylinder is internally provided with a first rotating filtering mechanism, the upper box body is internally provided with a second rotating filtering mechanism, and the lower box body is internally further provided with a gas tank; the first rotating filtering mechanism and the second rotating filtering mechanism rotate to stir and filter the heat-conducting oil, so that the filtering efficiency of the heat-conducting oil is improved; the first rotating filtering mechanism drives the heated air to be injected into the spiral air pipe in the heat preservation cylinder, so that the heated air is sprayed into the heat preservation cylinder through the nozzle on the spiral air pipe to heat and preserve the heat-conducting oil in the heat preservation cylinder; and the air in the heat preservation cylinder is introduced into the upper box body through the first pipeline to heat and preserve the heat-conducting oil in the upper box body.

Description

Technical Field

[0001] This invention relates to the field of heat transfer oil circulation technology, specifically to a heat transfer oil circulation structure and a spunbond spinning box. Background Technology

[0002] Spunbond technology combines the spinning of chemical fibers with the web formation and curing of nonwoven fabrics. When processing spunbond fibers, a spinning box is used. During spinning within the spinning box, heat-conducting oil is needed to ensure temperature uniformity. In existing technologies, temperature control in the spinning box is achieved by heating the heat-conducting oil to the required temperature within the box. However, long-term use of the heat-conducting oil can cause impurities to clog the pipes, affecting temperature control. This necessitates circulating and filtering the heat-conducting oil, but this process also leads to heat loss, making it unsuitable for direct use after filtration and effective temperature control in the spinning box. Therefore, we propose a heat-conducting oil circulation structure and a spunbond spinning box. Summary of the Invention

[0003] The purpose of this invention is to provide a heat transfer oil circulation structure and a spunbond spinning box to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A heat transfer oil circulation structure includes a lower tank, an upper tank and a circulation pump disposed on top of the lower tank, wherein the circulation pump is used to circulate the heat transfer oil sequentially in the insulation cylinders inside the upper and lower tanks.

[0006] The insulation cylinder is equipped with a first rotating filter mechanism, which is driven by a servo motor to rotate inside the insulation cylinder and is used to filter the heat transfer oil inside the insulation cylinder.

[0007] The upper chamber is equipped with a second rotating filter mechanism, which rotates within the upper chamber under the drive of the first rotating filter mechanism to stir and filter the heat transfer oil within the upper chamber.

[0008] The lower box is also equipped with an air tank, which, driven by the first rotating filter mechanism, injects heated air into the spiral air pipe inside the heat preservation cylinder. The heated air is then sprayed into the heat preservation cylinder through the nozzle on the spiral air pipe to heat and preserve the heat-conducting oil inside the heat preservation cylinder.

[0009] Air inside the insulation cylinder is introduced into the upper chamber through the first conduit to heat and insulate the heat transfer oil inside the upper chamber. Air inside the upper chamber is then introduced into the spiral insulation pipe that is fitted around the outside of the insulation cylinder through the second conduit to achieve the insulation effect on the outer surface of the insulation cylinder.

[0010] Preferably, the first rotating filter mechanism includes a rotating cylinder inside the heat-insulating cylinder, a first filter element inside the rotating cylinder, several sets of equally spaced rectangular frames fixed on the surface of the rotating cylinder, and a filter plate inserted into the rectangular frames.

[0011] The rear end of the insulation cylinder is open, which is used for inserting the rotating cylinder into the insulation cylinder. The rear end of the insulation cylinder is also fixed with a first sealing cover, and the servo motor is fixed in the middle of the rear end of the first sealing cover.

[0012] The rectangular frame and the rotating cylinder are provided with several sets of connecting holes, so that the slot inside the rectangular frame is connected to the inside of the rotating cylinder. The rectangular frame is provided with rectangular slots in the middle of both sides of the rectangular frame.

[0013] Preferably, the filter plate is inserted into the rectangular frame via a slot, and the rectangular area on the surface of the rotating drum is provided with evenly distributed holes. The rear end of the rotating drum is open, which is used for inserting the first filter element into the rotating drum. The rear end of the rotating drum is fixed with a second sealing cover by bolts, and the motor shaft at the output end of the servo motor passes through the first sealing cover and is fixed to the middle of the rear end of the second sealing cover. The first shaft at the middle of the front end of the rotating drum passes through the heat preservation cylinder and is fixed with a first pulley.

[0014] The second rotating filter mechanism includes a first disc seat and a second disc seat on the front and rear sides inside the upper housing, and a second filter element fixed between the first disc seat and the second disc seat.

[0015] The second rotating shaft at the front middle of the first disc seat passes through the lower housing and is connected to the second pulley. The symmetrically arranged inserts at the rear end of the first disc seat pass through the second filter element and the second disc seat and are screwed with locking nuts. The third rotating shaft at the rear middle of the second disc seat passes through the lower housing.

[0016] The second pulley is connected to the first pulley via the first belt.

[0017] Preferably, the spiral air pipe is fixed to the inner wall of the insulation cylinder, the air outlet of the air tank is connected to the air inlet at the left end of the spiral air pipe through the air guide pipe, an electric heating tube is installed inside the air tank near its air outlet, and a fourth rotating shaft is provided inside the other end of the air tank. The surface of the fourth rotating shaft is provided with blades, and the front end of the fourth rotating shaft extends through the air tank and is connected to a third pulley, which is connected to the first pulley through a second belt.

[0018] Preferably, the nozzles are evenly distributed on the inner wall of the spiral air pipe, and the nozzle sidewall is provided with an air outlet. A piston is provided inside the nozzle, and two sets of symmetrical smooth rods in the middle are sleeved with springs and extend through the nozzle. Under the elastic force of the springs, the piston seals the top of the air outlet to prevent heat transfer oil from flowing back into the nozzle and spiral air pipe through the air outlet.

[0019] In addition, to achieve the above objectives, the present invention also provides a spunbond spinning box housing, including the aforementioned heat-conducting oil circulation structure.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the servo motor drives the first rotating filter mechanism inside the heat insulation cylinder to rotate and filter the heat transfer oil inside the heat insulation cylinder. At the same time, the second rotating filter mechanism inside the upper box rotates to stir and filter the heat transfer oil inside the upper box, which can improve the efficiency of heat transfer oil filtration.

[0021] Driven by the first rotating filter mechanism, heated air is injected into the spiral air pipe inside the insulation cylinder. The heated air is then sprayed into the insulation cylinder through the nozzle on the spiral air pipe to heat and keep the heat-conducting oil inside the insulation cylinder. The air inside the insulation cylinder is introduced into the upper chamber through the first conduit to heat and keep the heat-conducting oil inside the upper chamber. The air inside the upper chamber is then introduced into the spiral insulation pipe that is fitted on the outside of the insulation cylinder through the second conduit to keep the outer surface of the insulation cylinder warm and prevent the heat from being lost from the heat-conducting oil inside the insulation cylinder. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the connection between the upper box body, spiral insulation pipe, insulation cylinder and gas tank of the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the first rotating filter mechanism of the present invention;

[0025] Figure 4 This is an exploded structural diagram of the first rotating filter mechanism of the present invention;

[0026] Figure 5 This is a cross-sectional structural diagram showing the connection between the first rotating filter mechanism, the heat preservation cylinder, and the gas tank of the present invention.

[0027] Figure 6 This is a schematic diagram showing the position and structure of the piston in the nozzle in the initial state of the present invention;

[0028] Figure 7 This is a cross-sectional view of the nozzle of the present invention in the air outlet state.

[0029] Figure 8 This is an exploded structural diagram of the second rotating filter mechanism of the present invention.

[0030] In the diagram: 1. Circulating pump; 2. First pipe; 3. Second pipe; 4. Second conduit; 5. Upper housing; 6. Second pulley; 7. First conduit; 8. Connecting pipe; 9. Second shaft; 10. First shaft; 11. First pulley; 12. Spiral insulation pipe; 13. Insulation cylinder; 14. First sealing cover; 15. Servo motor; 16. Air guide pipe; 17. Air tank; 18. Discharge pipe; 19. Mounting bracket; 20. Rotary drum; 21. Filter plate; 22. Rectangular frame; 23. Locking nut; 24. Motor shaft; 25. Rectangular area; 26. 27. Slot; 28. Rectangular slot; 29. ​​Connecting hole; 30. First filter element; 31. Second sealing cover; 32. Bolt; 33. Third pulley; 34. Fourth shaft; 35. Air inlet pipe; 36. Insulation layer; 37. Spiral air pipe; 38. Nozzle; 39. Electric heating element; 40. Blade; 41. Lower housing; 42. Second belt; 43. First belt; 44. Air outlet; 45. Spring; 46. Piston; 47. Smooth rod; 48. First disc seat; 49. Insert post; 50. Second filter element; 51. Second disc seat; 52. Third shaft. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-8 The present invention provides a technical solution:

[0033] Example 1:

[0034] A heat transfer oil circulation structure includes a lower housing 40, an upper housing 5 disposed on top of it, and a circulation pump 1. The circulation pump 1 is used to circulate the heat transfer oil sequentially in the heat insulation cylinder 13 inside the upper housing 5 and the lower housing 40.

[0035] The circulating pump 1 is installed on the mounting bracket 19 on the top of the lower box 40. The outlet of the circulating pump 1 is connected to the top of the upper box 5 through the first pipe 2. The second pipe 3 connected to the inlet of the circulating pump 1 passes through the lower box 40 and is connected to the bottom of the insulation cylinder 13. The top of the insulation cylinder 13 is connected to the bottom of the side of the upper box 5 through the connecting pipe 8.

[0036] The lower housing 40 has an installation cavity for installing the insulation cylinder 13, and an insulation layer 35 is filled inside the insulation cylinder 13, and the spiral insulation pipe 12 is fixed inside the insulation layer 35.

[0037] The first conduit 7 at the top front end of the insulation cylinder 13 is connected to the bottom of the upper box 5, the second conduit 4 at the top of the upper box 5 is connected to the front end of the spiral insulation pipe 12, and the rear end of the spiral insulation pipe 12 is connected to a discharge pipe 18 that extends through and out of the lower box 40.

[0038] The heat insulation cylinder 13 is equipped with a first rotating filter mechanism, which is driven by a servo motor 15 to rotate inside the heat insulation cylinder 13, and is used to stir and filter the heat transfer oil inside the heat insulation cylinder 13.

[0039] The first rotating filter mechanism includes a rotating cylinder 20 inside the heat-insulating cylinder 13, a first filter element 29 inside the rotating cylinder 20, several sets of equally spaced rectangular frames 22 fixed on the surface of the rotating cylinder 20, and a filter plate 21 inserted into the rectangular frames 22.

[0040] The rear end of the heat preservation cylinder 13 is open, which is used for the rotating cylinder 20 to be inserted into the heat preservation cylinder 13. The rear end of the heat preservation cylinder 13 is also fixed with a first sealing cover 14, and the servo motor 15 is fixed in the middle of the rear end of the first sealing cover 14.

[0041] The rectangular frame 22 and the rotating cylinder 20 are provided with several sets of connecting holes 28, so that the slot 26 inside the rectangular frame 22 is connected to the inside of the rotating cylinder 20. The rectangular frame 22 is provided with rectangular slots 27 in the middle of both sides of its surface.

[0042] The filter plate 21 is inserted into the rectangular frame 22 via the slot 26. The rectangular area 25 on the surface of the rotating cylinder 20 is also provided with evenly distributed holes, and the rear end of the rotating cylinder 20 is open. This opening is used for the first filter element 29 to be inserted into the rotating cylinder 20. The rear end of the rotating cylinder 20 is fixed with a second sealing cover 30 by bolts 31. The motor shaft 24 at the output end of the servo motor 15 passes through the first sealing cover 14 and is fixed to the middle of the rear end of the second sealing cover 30. The first shaft 10 at the middle of the front end of the rotating cylinder 20 passes through the heat preservation cylinder 13 and is fixed with a first pulley 11.

[0043] The upper housing 5 is provided with a second rotating filter mechanism, which rotates within the upper housing 5 under the drive of the first rotating filter mechanism, and is used to filter the heat transfer oil in the upper housing 5.

[0044] The second rotating filter mechanism includes a first disc seat 47 and a second disc seat 50 on the front and rear sides inside the upper housing 5, and a second filter element 49 fixed between the first disc seat 47 and the second disc seat 50.

[0045] The second rotating shaft 9 at the front middle of the first disc seat 47 passes through the lower housing 40 and is connected to the second pulley 6. The insert post 48 symmetrically arranged at the rear end of the first disc seat 47 passes through the second filter element 49 and the second disc seat 50 and is screwed with the locking nut 23. The third rotating shaft 51 at the rear middle of the second disc seat 50 passes through the lower housing 40.

[0046] The second pulley 6 is connected to the first pulley 11 via the first belt 42.

[0047] The lower housing 40 is also equipped with an air tank 17, which, driven by the first rotating filter mechanism, injects heated air into the spiral air pipe 36 inside the heat preservation cylinder 13. The heated air is then sprayed into the heat preservation cylinder 13 through the nozzle 37 on the spiral air pipe 36 to heat and preserve the heat-conducting oil inside the heat preservation cylinder 13.

[0048] Air inside the insulation cylinder 13 is introduced into the upper chamber 5 through the first conduit 7 to heat and keep the heat-conducting oil inside the upper chamber 5 warm. Air inside the upper chamber 5 is then introduced into the spiral insulation pipe 12 that is sleeved on the outside of the insulation cylinder 13 through the second conduit 4 to achieve the insulation effect on the outer surface of the insulation cylinder 13.

[0049] The spiral air pipe 36 is fixed to the inner wall of the heat preservation cylinder 13. The air outlet of the air tank 17 is connected to the air inlet at the left end of the spiral air pipe 36 through the air guide pipe 16. An electric heating tube 38 is installed inside the air tank 17 near its air outlet. A fourth rotating shaft 33 is provided inside the other end of the air tank 17. The surface of the fourth rotating shaft 33 is provided with blades 39. The front end of the fourth rotating shaft 33 extends through the air tank 17 and is connected to a third pulley 32, which is connected to the first pulley 11 through a second belt 41.

[0050] An air inlet pipe 34 is also connected to the side of the gas tank 17, which is used to directly introduce heated air into the gas tank 17 after the electric heating tube 38 is not working.

[0051] The nozzles 37 are evenly distributed on the inner wall of the spiral air pipe 36, and each nozzle 37 has an air outlet 43 inside its side wall. A piston 45 is located inside each nozzle 37, with two symmetrical sets of smooth rods 46 extending through the nozzle 37 after being sleeved with springs 44. Under the elastic force of the springs 44, the pistons 45 seal the top of the air outlet 43 (e.g., Figure 6 (as shown in the diagram) to prevent heat transfer oil from flowing back into the nozzle 37 and spiral air pipe 36 through the vent 43.

[0052] In addition, to achieve the above objectives, the present invention also provides a spunbond spinning box housing, including the aforementioned heat-conducting oil circulation structure.

[0053] Specifically, during use, air is introduced into the air tank 17 through the air inlet pipe 34. Under the action of the electric heating tube 38, the air in the air tank 17 is heated. The air tank 17 is also connected to the side of the air inlet pipe 34, which is used to directly introduce the heated air into the air tank 17 after the electric heating tube 38 is not working, so that when the blade 39 rotates, the heated air is introduced into the spiral air pipe 36 through the air guide pipe 16.

[0054] When the circulating pump 1 is working, it introduces the heat transfer oil in the insulation cylinder 13 into the upper box 5 through the second pipe 3 and the first pipe 2. The heat transfer oil accumulates in the upper box 5 and then re-enters the insulation cylinder 13 through the connecting pipe 8.

[0055] The servo motor 15 operates, driving the rotating drum 20 inside the insulation cylinder 13 and the rectangular frame 22 on the rotating drum 20 to rotate. This causes the filter plate 21 inside the rectangular frame 22 to stir the heat transfer oil in the insulation cylinder 13 while also filtering it (the heat transfer oil impurities are adsorbed on the filter plate 21). The purpose of stirring is to increase the flow rate of the heat transfer oil so that after the heated air enters the insulation cylinder 13 through the nozzle 37, it can achieve rapid and uniform heating and insulation of the heat transfer oil in the insulation cylinder 13.

[0056] The heat transfer oil that enters the slot 26 then enters the rotating drum 20 through the connecting hole 28, so that the heat transfer oil in the rotating drum 20 is filtered again through the first filter element 29 (the heat transfer oil impurities are adsorbed on the surface of the first filter element 29), and the heat transfer oil in the rotating drum 20 then re-enters the heat insulation cylinder 13 through the holes in the rectangular area 25.

[0057] At this time, since the third pulley 32 is connected to the first pulley 11 through the second belt 41, the third pulley 32 drives the blade 39 to rotate while the rotating drum 20 rotates, so that the heated air in the gas tank 17 is introduced into the spiral air pipe 36 through the air guide pipe 16. The spiral air pipe 36 blows the heated air into the heat preservation cylinder 13 through the nozzle 37, so as to achieve rapid and uniform heating and heat preservation of the heat transfer oil in the heat preservation cylinder 13.

[0058] The heated air blown into the insulation cylinder 13 can also increase the rapid and uniform diffusion of the heat transfer oil in the insulation cylinder 13, further improving the rapid and uniform heating and insulation of the heat transfer oil in the insulation cylinder 13.

[0059] When the heated air in the spiral tube 36 enters the nozzle 37, the pressure of the heated air causes the piston 45 to slide down the inside of the nozzle 37. At this time, the spring 44 is in a compressed state until the piston 45 leaks out from the top of the outlet 43 (e.g., Figure 7(As shown in the state), a portion of the heated air is discharged at high speed into the insulation cylinder 13 through the air outlet 43. The increased speed of the heated air as it is discharged through the air outlet 43 increases the rapid and uniform diffusion of the heat transfer oil in the insulation cylinder 13, further improving the rapid and uniform heating and insulation of the heat transfer oil in the insulation cylinder 13.

[0060] Since the second pulley 6 is connected to the first pulley 11 through the first belt 42, when the drum 20 rotates, the first disc seat 47 and the second disc seat 50, as well as the second filter element 49 fixed between the first disc seat 47 and the second disc seat 50, rotate. The second filter element 49 filters the heat transfer oil in the upper box 5, and the impurities in the heat transfer oil are gradually adsorbed on the surface of the second filter element 49.

[0061] As the blades 39 rotate, the heated air in the gas tank 17 is blown into the insulation cylinder 13, heating and insulating the heat transfer oil inside the insulation cylinder 13. The air inside the insulation cylinder 13 then enters the upper chamber 5 through the first conduit 7, heating and insulating the heat transfer oil inside the upper chamber 5. Subsequently, the air inside the upper chamber 5 enters the spiral insulation pipe 12 through the second conduit 4, heating and insulating the outside of the insulation cylinder 13. This further reduces the heat loss of the insulation cylinder 13, thereby reducing the temperature loss of the heat transfer oil inside the insulation cylinder 13. Finally, the heat inside the spiral insulation pipe 12 is discharged into the outside air through the discharge pipe 18.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat transfer oil circulation structure, comprising a lower housing, an upper housing disposed on top of the lower housing, and a circulation pump, characterized in that: The circulating pump is used to circulate the heat transfer oil sequentially in the insulation cylinders inside the upper and lower boxes; The heat insulation cylinder is equipped with a first rotating filter mechanism, which is driven by a servo motor to rotate inside the heat insulation cylinder, and is used to stir and filter the heat transfer oil inside the heat insulation cylinder. The upper chamber is equipped with a second rotating filter mechanism, which rotates within the upper chamber under the drive of the first rotating filter mechanism to filter the heat transfer oil within the upper chamber. The lower box is also equipped with an air tank, which, driven by the first rotating filter mechanism, injects heated air into the spiral air pipe inside the heat preservation cylinder. The heated air is then sprayed into the heat preservation cylinder through the nozzle on the spiral air pipe to heat and preserve the heat-conducting oil inside the heat preservation cylinder. Air inside the insulation cylinder is introduced into the upper chamber through the first conduit to heat and insulate the heat transfer oil inside the upper chamber. Air inside the upper chamber is then introduced into the spiral insulation pipe that is fitted around the outside of the insulation cylinder through the second conduit to achieve the insulation effect on the outer surface of the insulation cylinder. The first rotating filter mechanism includes a rotating cylinder inside the heat-insulating cylinder, a first filter element inside the rotating cylinder, several sets of equally spaced rectangular frames fixed on the surface of the rotating cylinder, and filter plates inserted into the rectangular frames; The rear end of the insulation cylinder is open, which is used for inserting the rotating cylinder into the insulation cylinder. The rear end of the insulation cylinder is also fixed with a first sealing cover, and the servo motor is fixed in the middle of the rear end of the first sealing cover. The connection between the rectangular frame and the rotating cylinder is provided with several sets of connecting holes, so that the slot inside the rectangular frame is connected to the inside of the rotating cylinder, and rectangular slots are provided in the middle of the two side surfaces of the rectangular frame. The filter plate is inserted into the rectangular frame via a slot. The rectangular area on the surface of the rotating drum is also provided with evenly distributed holes, and the rear end of the rotating drum is open. This opening is used for inserting the first filter element into the rotating drum. The rear end of the rotating drum is fixed with a second sealing cover by bolts, and the motor shaft at the output end of the servo motor passes through the first sealing cover and is fixed to the middle of the rear end of the second sealing cover. The first shaft at the middle of the front end of the rotating drum passes through the heat preservation cylinder and is fixed with a first pulley. The second rotating filter mechanism includes a first disc seat and a second disc seat on the front and rear sides inside the upper housing, and a second filter element fixed between the first disc seat and the second disc seat. The second rotating shaft at the front middle of the first disc seat passes through the upper housing and is connected to the second pulley. The symmetrically arranged insertion posts at the rear end of the first disc seat pass through the second filter element and the second disc seat and are screwed with locking nuts. The third rotating shaft at the rear middle of the second disc seat passes through the upper housing. The second pulley is connected to the first pulley via the first belt.

2. The heat transfer oil circulation structure according to claim 1, characterized in that: The spiral air pipe is fixed to the inner wall of the insulation cylinder. The air outlet of the air tank is connected to the air inlet at the left end of the spiral air pipe through the air guide pipe. An electric heating tube is installed inside the air tank near its air outlet. A fourth rotating shaft is provided inside the other end of the air tank. The surface of the fourth rotating shaft is provided with blades. The front end of the fourth rotating shaft extends through the air tank and is connected to a third pulley. It is connected to the first pulley through a second belt.

3. The heat transfer oil circulation structure according to claim 2, characterized in that: The nozzles are evenly distributed on the inner wall of the spiral air pipe, and the nozzle sidewall is provided with an air outlet. A piston is provided inside the nozzle, and two sets of symmetrical smooth rods in the middle are sleeved with springs and extend through the nozzle. Under the elastic force of the springs, the piston seals the top of the air outlet to prevent heat transfer oil from flowing back into the nozzle and spiral air pipe through the air outlet.

4. A spunbond spinning box, characterized in that, It includes the heat transfer oil circulation structure as described in any one of claims 1-3.

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