Roll surface blowing assembly and calender

Abstract

The utility model is applicable to the field of calendering equipment, and discloses a roll surface blowing assembly and a calender, which comprise an air inlet header pipe, a plurality of air inlet branch pipes, a first manual valve, a first pipe joint and a blowing nozzle. The plurality of air inlet branch pipes are arranged on the side, facing the calendering roller, of the air inlet main pipe, and the first pipe joints are arranged at the air outlets of the air inlet branch pipes, so that the first pipe joints can be connected with or not connected with the blowing nozzles, the installation number of the blowing nozzles can be adjusted according to the cooling requirement of the calendering roller, and the cooling efficiency of the calendering roller is improved. When the distance between the air blowing nozzles needs to be adjusted, operation is simpler, only the air blowing nozzles need to be selectively connected to different air inlet branch pipes, and the distance between the air inlet branch pipes does not need to be adjusted. In addition, the first manual valve is arranged on the air inlet branch pipe, when the air inlet branch pipe is not connected with the air blowing nozzle, the first manual valve is closed, it can be ensured that cold air cannot leak out of the air inlet branch pipe, and the problem of cold air waste cannot occur.

Description

Technical Field

[0001] The utility model relates to the field of calendering equipment, in particular to a roll surface air blowing assembly and a calender. Background Art

[0002] The calender plays a crucial role in the plastic film manufacturing industry and belongs to a large key equipment for film production. Among them, the calender roll is an important component and can calender high-temperature plastics. However, in the actual production process, due to the influence of material extrusion, the roll will produce a small amount of elastic deformation, especially the last pair of rolls is more obvious, and the processed film is prone to the phenomenon of being thick in the middle and thin on both sides.

[0003] In order to solve the above technical problems, the Chinese patent document with the publication number CN208645816U discloses a calendering device, and specifically discloses that the calendering device is provided with a blowing member for blowing cooling air on the roll surface of the calender roll, so as to cool and lower the temperature of the calender roll, and further keep the temperature of the calender roll surface relatively uniform.

[0004] However, the existing blowing member includes a plurality of blowing nozzles and a blowing pipe connected to each blowing nozzle. When it is necessary to adjust the distance between the blowing nozzles, it is necessary to first adjust the distance between the blowing pipes; and the blowing pipes often communicate with the air delivery pipeline of compressed air parallel to the axial direction of the calender roll, and it is necessary to ensure airtightness. Therefore, it is difficult to adjust the distance between the blowing pipes, which makes it difficult to adjust the distance between the blowing nozzles.

[0005] It can be seen that the existing technology still needs to be improved. Content of the Utility Model

[0006] The purpose of the utility model is to provide a roll surface air blowing assembly and a calender, aiming to solve the problem that it is difficult to adjust the distance between the blowing nozzles of the existing blowing member of the calender roll.

[0007] To achieve the above purpose, the solution provided by the utility model is:

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0009] A roll surface air blowing assembly includes a main intake pipe; the length direction of the main intake pipe is consistent with the axial direction of the calender roll, and cold air is introduced into the main intake pipe; it further includes:

[0010] Multiple intake branch pipes, the intake branch pipes are perpendicular to the intake main pipe in the horizontal direction, and the intake branch pipes are communicated with the intake main pipe and are spaced apart on one side of the intake main pipe facing the calender roll;

[0011] A first manual valve, the first manual valve is arranged on the intake branch pipe;

[0012] A first pipe joint, the first pipe joint is detachably arranged at the air outlet of the intake branch pipe;

[0013] A blowing nozzle, the blowing nozzle can be connected with the intake branch pipe through the first pipe joint, and the blowing nozzle is used for blowing cold air to the roll surface of the calender roll.

[0014] Preferably, the lengths of the blowing nozzles are different from each other.

[0015] Preferably, the roll surface blowing assembly further includes:

[0016] Two mounting seats, the two mounting seats are in an inverted L shape and are mirror images of each other on both sides of the intake main pipe, and the vertical parts of the mounting seats are detachably connected to the frame of the calender;

[0017] Two connecting plates, the two connecting plates are fixed at both ends of the intake main pipe, and the connecting plates are detachably connected to the horizontal parts of the mounting seats.

[0018] Preferably, a plug rod is vertically fixed at the bottom of the connecting plate; the plug rod passes through the horizontal part of the mounting seat, and a nut is sleeved on the plug rod; the nut is located below the horizontal part of the mounting seat.

[0019] Preferably, the roll surface blowing assembly further includes:

[0020] A second pipe joint, the second pipe joint is arranged on one side of the intake main pipe, and the second pipe joint is communicated with the intake main pipe,

[0021] An air pipeline, one end of the air pipeline is connected with the second pipe joint, and an air storage tank is connected to the air pipeline,

[0022] An oil-water separator, the oil-water separator is arranged on the air pipeline;

[0023] Wherein, the air pipeline is used for conveying compressed air into the intake main pipe.

[0024] Preferably, the air pipeline includes an air delivery hose and a rigid air delivery pipe communicated with the air delivery hose; the air delivery hose is connected with the second pipe joint, and a limit ring is sleeved on the air delivery hose; the limit ring is arranged on the frame of the calender.

[0025] Preferably, a second manual valve is arranged on the rigid air delivery pipe; the air delivery hose is tied to the rigid air delivery pipe.

[0026] Preferably, both the first manual valve and the second manual valve are manual ball valves.

[0027] The present utility model further provides a calender, which includes the aforementioned roll surface air blowing assembly.

[0028] Beneficial effects:

[0029] The present utility model provides a roll surface air blowing assembly. By arranging a plurality of air inlet branch pipes on one side of the air inlet main pipe facing the calender roll, and arranging a first pipe joint at the air outlet of each air inlet branch pipe, the first pipe joint can be connected or not connected to the air blowing nozzle. Thus, according to the cooling requirement of the calender roll, the installation quantity of the air blowing nozzles can be adjusted. When it is necessary to adjust the distance between the air blowing nozzles, the operation is simpler. It only needs to select and connect the air blowing nozzles to different air inlet branch pipes, and there is no need to adjust the distance between the air inlet branch pipes.

[0030] In addition, by arranging a first manual valve on the air inlet branch pipe, when the air inlet branch pipe is not connected to the air blowing nozzle, closing the first manual valve on this air inlet branch pipe can ensure that cold air will not leak out from this air inlet branch pipe, and there will be no problem of waste of cold air.

[0031] The present utility model further provides a calender, which includes the aforementioned roll surface air blowing assembly, so as to enable the temperature of the calender roll surface to be relatively uniform, and the overall thickness of the calendered film to be relatively consistent. Description of the drawings

[0032] Figure 1 is a schematic structural diagram of the roll surface air blowing assembly provided by the present utility model Figure 1 .

[0033] Figure 2 is Figure 1 an enlarged view of part A in

[0034] Figure 3 is a schematic structural diagram of the roll surface air blowing assembly provided by the present utility model Figure 2 .

[0035] Figure 4 is Figure 3 an enlarged view of part B in

[0036] Figure 5 is Figure 3 an enlarged view of part C in

[0037] Explanation of the reference numerals in the drawings:

[0038] 1 - Intake manifold; 2 - Intake branch pipe; 3 - First manual valve; 4 - First pipe joint; 5 - Limit ring; 6 - Blowing nozzle; 7 - Mounting seat; 8 - Connecting plate; 9 - Plug rod; 10 - Nut; 11 - Second pipe joint; 12 - Gas pipeline; 121 - Gas hose; 122 - Rigid conveying pipe; 13 - Gas storage tank; 14 - Oil-water separator; 15 - Second manual valve. Detailed implementation mode

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0040] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] It should also be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0042] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0043] Please refer to Figure 1 and Figure 2 , the present invention provides a roll surface blowing assembly, including an intake manifold 1; the length direction of the intake manifold 1 is consistent with the axial direction of the calender roll, and cold air is introduced into the intake manifold 1. The cold air is generally low-temperature compressed air. Further, the roll surface blowing assembly further includes an intake branch pipe 2, a first manual valve 3, a first pipe joint 4, and a blowing nozzle 6.

[0044] Among them, there are multiple intake branch pipes 2, and the intake branch pipes 2 are perpendicular to the intake main pipe 1 in the horizontal direction. At the same time, the intake branch pipes 2 are communicated with the intake main pipe 1 and are spaced apart and distributed on one side of the intake main pipe 1 facing the calender roll. The aforementioned spaced distribution can be an equidistant spaced distribution. The first manual valve 3 is arranged on the intake branch pipe 2, and it can be a manual ball valve with a handle, which is convenient for production personnel to control the opening degree of the first manual valve 3. When the first manual valve 3 on any intake branch pipe 2 is closed, whether the cold air in the intake main pipe 1 is discharged to the outside through the corresponding intake branch pipe 2.

[0045] Among them, the first pipe joint 4 is detachably arranged at the air outlet of the intake branch pipe 2, and it plays the role of connecting the blowing nozzle 6. The blowing nozzle 6 can be connected to the intake branch pipe 2 through the first pipe joint 4 to blow cold air to the calender roll surface. Similarly, the first pipe joint 4 can not be connected to the blowing nozzle 6. Thus, according to the cooling requirement of the calender roll, the installation quantity of the blowing nozzle 6 can be adjusted. When it is necessary to adjust the spacing of the blowing nozzle 6, the operation is simpler. It only needs to select and connect the blowing nozzle 6 to different intake branch pipes 2, and the spacing of the intake branch pipes 2 (equivalent to the blowing pipes in the prior art) does not need to be adjusted.

[0046] And because the first manual valve 3 is arranged on the intake branch pipe 2, when the intake branch pipe 2 is not connected to the blowing nozzle 6, after the first manual valve 3 thereon is closed, it can ensure that the cold air will not leak out from this intake branch pipe 2, and there will be no problem of waste of cold air.

[0047] In a preferred embodiment of the present utility model, the lengths of the blowing nozzles 6 are different. The blowing ranges of the blowing nozzles 6 with different lengths are different. Therefore, by reasonably selecting the blowing nozzles 6 with appropriate lengths, the usage quantity of the blowing nozzles 6 can be reduced.

[0048] Such as Figure 3 and Figure 4 shown, in a preferred embodiment of the present utility model, the roll surface blowing assembly further includes a mounting seat 7 and a connecting plate 8.

[0049] Among them, there are two mounting seats 7 in total. The two mounting seats 7 are both in an inverted L shape and are mirror images of each other on both sides of the intake main pipe 1. In this embodiment, the mounting seat 7 plays the role of mounting the intake main pipe 1, and it is usually detachably mounted (for example, realized by bolts) on the inner side of the frame of the calender.

[0050] Among them, there are two connecting plates 8 in total. The two connecting plates 8 are fixed at both ends of the intake main pipe 1, and the connecting plates 8 are detachably connected to the horizontal parts of the mounting seats 7. Since the mounting seat 7 is usually fixed on the inner side of the frame of the calender, therefore, by virtue of the connection relationship between the connecting plate 8 and the mounting seat 7, the installation of the intake main pipe 1 can be realized.

[0051] The connecting plate 8 and the mounting seat 7 are detachably connected, so that the intake manifold 1 can be removed from the mounting seat 7, facilitating the production personnel to replace and install the blowing nozzle 6.

[0052] As Figure 4 described, in a preferred embodiment of the present invention, a plug rod 9 is vertically fixed at the bottom of the connecting plate 8. The outer wall of the plug rod 9 is provided with threads and can be movably inserted through the horizontal part of the mounting seat 7; a nut 10 is also sleeved on the plug rod 9, and the nut 10 is located below the horizontal part of the mounting seat 7, so that the plug rod 9 can be fixed on the mounting seat 7 by using the nut 10, and the intake manifold 1 cannot move after installation.

[0053] By fixing the plug rod 9 at the bottom of the connecting plate 8, the production personnel can quickly position the connecting plate 8 on the mounting seat 7 with the help of the plug rod 9, thereby improving the assembly efficiency of the intake manifold 1.

[0054] As Figure 1 and Figure 3 shown, in a preferred embodiment of the present invention, the roll surface blowing assembly further includes a second pipe joint 11, an air delivery pipeline 12, and an oil-water separator 14.

[0055] Among them, the second pipe joint 11 is arranged on one side of the intake manifold 1 and is communicated with the intake manifold 1; one end of the air delivery pipeline 12 is connected to the second pipe joint 11, and the air delivery pipeline 12 is connected to an air storage tank 13. The air storage tank 13 is part of the existing workshop compressed air supply system, and compressed air is stored inside it. Therefore, when the air delivery pipeline 12 is connected to the air storage tank 13, compressed air can be delivered into the intake manifold 1 to meet the cooling requirements of the calender roll surface. The oil-water separator 14 is arranged on the air delivery pipeline 12, and it can be installed inside the calender frame and can remove the oil and water carried by the compressed air, improving the quality of the compressed air. When the compressed air blows to the roll surface of the calender roll, the roll surface is not easily contaminated, thus ensuring the quality of the rolled film.

[0056] As Figure 1 and Figure 3 shown, in a preferred embodiment of the present invention, the air delivery pipeline 12 includes an air delivery hose 121 and a rigid air delivery pipe communicated with the air delivery hose 121. Among them, the air delivery hose 121 is connected to the second pipe joint 11, which is convenient to be removed from the intake manifold 1, making the intake manifold 1 easy to disassemble.

[0057] In order to prevent the air delivery hose 121 from moving due to the too fast flow rate of the compressed air in the air delivery hose 121, a limiting ring 5 is sleeved on the air delivery hose 121; the limiting ring 5 is installed inside the calender frame.

[0058] As Figure 5 shown, in a preferred embodiment of the present utility model, a second manual valve 15 is provided on the rigid air delivery pipe. The second manual valve 15 can also be a manual ball valve with a handle, which is convenient for production personnel to control the air flow rate and velocity in the air delivery pipeline 12. The air delivery hose 121 can be bound to the rigid air delivery pipe through an elastic cord, further avoiding the situation that the air delivery hose 121 moves around and affects production.

[0059] The present utility model also provides a calender, which includes the aforementioned roll surface air blowing assembly, so as to enable the temperature of the roll surface of the calender roll to be relatively uniform, and the overall thickness of the calendered film to be relatively consistent.

[0060] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A roller surface blowing assembly, comprising an air intake manifold; the length direction of the air intake manifold is consistent with the axial direction of the calender roller, and cold air is introduced into the air intake manifold; characterized in that: Also includes: A plurality of air intake branch pipes, wherein the air intake branch pipes are perpendicular to the air intake main pipe in the horizontal direction, the air intake branch pipes are connected to the air intake main pipe, and are distributed at intervals on a side of the air intake main pipe facing the calendering roller; A first manual valve, wherein the first manual valve is arranged on the intake branch pipe; A first pipe joint, which is detachably arranged at the air outlet of the air inlet branch pipe; The blowing nozzle can be connected to the air inlet branch pipe through the first pipe joint, and the blowing nozzle is used to blow cold air to the roller surface of the calendering roller.

2. The roller surface blowing assembly according to claim 1, characterized in that: The lengths of the blowing nozzles are different.

3. The roller surface blowing assembly according to claim 1, characterized in that: Also includes: Two mounting seats, the two mounting seats are in an inverted L shape and are located on both sides of the air intake manifold in a mirror image of each other, and the vertical parts of the mounting seats are detachably connected to the frame of the calender; Two connecting plates are fixed at two ends of the air intake manifold, and the connecting plates are detachably connected to the horizontal part of the mounting seat.

4. The roller surface blowing assembly according to claim 3, characterized in that: A plug rod is vertically fixed at the bottom of the connecting plate; the plug rod is inserted into the horizontal part of the mounting seat, and a nut is sleeved on the plug rod; the nut is located below the horizontal part of the mounting seat.

5. The roller surface blowing assembly according to claim 1, characterized in that: Also includes: a second pipe joint, the second pipe joint being arranged at one side of the air intake manifold and being in communication with the air intake manifold, A gas pipeline, one end of which is connected to the second pipe joint, and the gas pipeline is connected to a gas storage tank, An oil-water separator, which is arranged on the gas pipeline; Among them, the air pipeline is used to transport compressed air to the inside of the intake manifold.

6. The roller surface blowing assembly according to claim 5, characterized in that: The gas pipeline includes a gas hose and a hard gas pipe connected to the gas hose; the gas hose is connected to the second pipe joint, and a limiting ring is sleeved on the gas hose; the limiting ring is arranged on the frame of the calender.

7. The roller surface blowing assembly according to claim 6, characterized in that: The hard gas pipe is provided with a second manual valve; the gas hose is bound to the hard gas pipe.

8. The roller surface blowing assembly according to claim 7, characterized in that: The first manual valve and the second manual valve are both manual ball valves.

9. A calender, characterized in that: The invention comprises the roller surface blowing assembly as described in any one of claims 1 to 8.

Images