Improved cooling roller

Abstract

The utility model relates to the field of production, in particular to an improved cooling roller which comprises a driving sleeve shaft coaxially fixed with a roller cylinder, the roller cylinder is in a sleeve shape, a cooling cavity for a cooling medium to flow is formed by a clamping cavity between the outer cylinder wall and the inner cylinder wall of the roller cylinder, and sandwich partition plates are evenly arranged in the roller cylinder in the radial direction. The cooling cavity is evenly divided into a plurality of cooling partition cavities through the sandwich partition plates, the shaft cavity of the driving sleeve shaft is communicated with the cooling partition cavities through the flow guide assembly, and cooling media entering the shaft cavity of the driving sleeve shaft enter the cooling partition cavities through the flow guide assembly and then are discharged outwards. The cooling device can uniformly cool all areas on the surface of a high-temperature product.

Description

Technical Field

[0001] The utility model relates to the production field, in particular to an improved cooling roller. Background Art

[0002] In a large number of production and processing systems such as rubber and plastic extrusion compound production, plastic extrusion sheet production, cast film production, embossed film production, plastic film production, automotive glass PVB film processing, vacuum aluminized paper lamination, food paper lamination, solar cell separator, ultraviolet coating production, etc., cooling rollers are used to cool products while conveying them, cool and shape the products transferred from the previous process, and then convey them to the next processing link to avoid thermal adhesion of the products due to excessive temperature. As described in the patent number "CN221268777U" for the existing cooling roller, an independent flow channel composed of several spiral blades is arranged between the inner sleeve steel pipe and the outer sleeve steel pipe, and cooling water is introduced into the spiral flow channel from the water inlet end and finally flows out from the water outlet end, extending the flow path of the cooling water through the spiral flow channel. This cooling method can achieve good cooling effect in the cooling of low-temperature products. However, when the temperature of the produced products is relatively high, since the cooling water flows in from one side of the cooling roller and out from the other side, the excessively long flow distance causes the cooling water at the water inlet end to quickly heat up after exchanging heat with the product, and its temperature is already very high when it reaches the water outlet end, unable to exchange heat and cool the product at the water outlet end, resulting in uneven cooling effects at both ends of the product passing through the cooling roller and affecting the product quality. Therefore, it is urgent to solve this problem. Summary of the Utility Model

[0003] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides an improved cooling roller. The utility model can achieve uniform cooling of each area on the surface of high-temperature products.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] An improved cooling roller includes a driving sleeve shaft coaxially fixed with a roller barrel. The roller barrel is in a sleeve shape, and the clamping cavity between the outer barrel wall and the inner barrel wall of the roller barrel forms a cooling cavity for the cooling medium to flow. Sandwich partitions are evenly arranged along the radial direction inside the roller barrel, and the sandwich partitions evenly divide the cooling cavity into several cooling compartments. The shaft cavity of the driving sleeve shaft is communicated with each cooling compartment through a diversion component, and the cooling medium entering the shaft cavity of the driving sleeve shaft enters each cooling compartment through the diversion component and then is discharged outward.

[0006] As a further solution of the present utility model: The driving sleeve shaft includes an inner sleeve shaft and an outer sleeve shaft arranged coaxially. The shaft cavity of the inner sleeve shaft forms a medium inlet cavity for introducing a cooling medium. The annular partition cavity formed by the inner sleeve shaft and the outer sleeve shaft forms a medium outlet cavity for discharging the cooling medium. One end of the inner sleeve shaft is open to form a medium inlet. The medium inlet cavity is communicated with the corresponding cooling partition cavity through a diversion assembly; after the sandwich partition penetrates through the outer cylinder wall, one end thereof is fixedly connected to the outer sleeve shaft, and the other end is fixedly connected to the outer cylinder wall. The adjacent two sandwich partitions and the outer cylinder wall and the inner cylinder wall enclose to form a cooling partition cavity. The sandwich cavity of the sandwich partition forms a diversion outlet, and the diversion outlet communicates the cooling partition cavity and the medium outlet cavity.

[0007] As a further solution of the present utility model: The adjacent two sandwich partitions and the outer sleeve shaft and the inner cylinder wall enclose to form a diversion cavity. A medium diversion pipe penetrating through the outer sleeve shaft is radially arranged on the inner sleeve shaft. The medium diversion pipe communicates the diversion cavity and the medium inlet cavity, and the medium diversion pipe and the diversion cavity cooperate to form a diversion assembly.

[0008] As a further solution of the present utility model: The inner cylinder wall is provided with a first diversion hole communicated with the diversion cavity and a second diversion hole communicated with the sandwich cavity of the sandwich partition. The outer sleeve shaft is provided with a third diversion hole communicated with the sandwich cavity of the sandwich partition. The aperture of the first diversion hole is larger than that of the second diversion hole.

[0009] As a further solution of the present utility model: The surfaces of the sandwich partition, the inner cylinder wall, the inner sleeve shaft and the outer sleeve shaft are all coated with heat insulation materials.

[0010] As a further solution of the present utility model: The drum cover of the roller is provided with a medium outlet communicated with the medium outlet cavity, and the medium outlet and the medium inlet are distributed at both ends of the driving sleeve shaft.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] 1. After the cooling medium of the present utility model enters the medium inlet cavity along the medium inlet, it is evenly distributed to each diversion cavity through the medium diversion pipe. The cooling medium in the diversion cavity enters the corresponding cooling partition cavity through the first diversion hole. The cooling medium in the cooling partition cavity exchanges heat with the product passing through the outer cylinder wall, thereby cooling the product. After the cooling medium exchanges heat with the product and heats up through the cooling partition cavity, it enters the diversion outlet of the sandwich partition through the second diversion hole and is concentrated in the medium outlet cavity through the third diversion hole, and finally is discharged outwards from the medium outlet; since the cooling partition cavities are evenly arranged along the axial direction of the roller and there will be no temperature interference between them, the surface of the product can be evenly cooled.

[0013] 2. The utility model passes a cooling medium into the diversion cavity through a medium diversion pipe for buffering, and pressurizes and discharges the cooling medium to the narrow cooling partition cavity through a second diversion hole, so that it quickly passes through the cooling partition cavity and exchanges heat with the product, avoiding the influence of the increased temperature of the cooling medium on the heat exchange effect. The cooled cooling medium is concentrated to the medium guide outlet through the diversion outlet and discharged outwards, so as to be recycled.

[0014] 3. The sandwich partition board, the inner cylinder wall, the inner sleeve shaft, the outer sleeve shaft and the surface of the medium diversion pipe of the utility model are all coated with heat insulation materials, so as to avoid the heat exchange between the heated cooling medium and the unheated cooling medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the utility model.

[0016] In the figure:

[0017] 1. Driving sleeve shaft; 11. Inner sleeve shaft; 111. Medium inlet; 112. Medium inlet cavity;

[0018] 12. Outer sleeve shaft; 121. Medium outlet cavity; 122. Medium guide outlet; 13. Medium diversion pipe;

[0019] 2. Roller; 21. Outer cylinder wall;

[0020] 22. Inner cylinder wall; 221. First diversion hole; 222. Second diversion hole;

[0021] 23. Cooling partition cavity; 24. Diversion cavity;

[0022] 25. Sandwich partition board; 251. Diversion outlet; 252. Third diversion hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 , in the embodiment of the present utility model, an improved cooling roller includes a driving sleeve shaft 1 coaxially fixed with a roller 2. The driving sleeve shaft 1 includes an inner sleeve shaft 11 and an outer sleeve shaft 12 arranged coaxially. The roller 2 includes an inner cylinder wall 22 and an outer cylinder wall 21 arranged coaxially. Both ends of the roller 2 are closed by cylinder covers.

[0025] One end of the inner sleeve shaft 11 of the driving sleeve shaft 1 forms a medium inlet 111, and the shaft cavity of the inner sleeve shaft 11 forms a medium inlet cavity 112. The inner sleeve shaft 11 and the outer sleeve shaft 12 enclose a ring-shaped medium outlet cavity 121. A medium outlet 122 is provided on the cylinder cover of the roller 2, and the medium outlet 122 is communicated with the medium outlet cavity 121. The cooling medium is preferably cooling water. The inlet pipe of the cooling water is communicated with the medium inlet 111 through a rotary joint, and the cooling water discharged from the medium outlet 122 is connected with a recovery pipe through a rotary joint to realize the recycling of the cooling water. The cooling roller itself can be a traction roller or a guiding roller. When it is a traction roller, a transmission gear can be coaxially installed outside the outer sleeve shaft 12, and the driving sleeve shaft 1 can be driven to rotate through motor drive and gear meshing drive.

[0026] A sandwich partition 25 is arranged radially inside the roller 2. The sandwich partition 25 is annular and evenly divides the cylinder cavity of the roller 2 axially. The inner ring of the sandwich partition 25 is fixedly connected to the outer sleeve shaft 12. After the outer ring of the sandwich partition 25 passes through the inner cylinder wall 22, it is fixedly connected to the outer cylinder wall 21. The inner cylinder wall 22, the inner sleeve shaft 11 and two adjacent sandwich partitions 25 enclose a ring-shaped diversion cavity 24. The outer cylinder wall 21, the inner cylinder wall 22 and two adjacent sandwich partitions 25 enclose a ring-shaped cooling partition cavity 23.

[0027] Medium diversion pipes 13 are evenly arranged radially on the inner cylinder wall 22. After passing through the outer sleeve shaft 12, the medium diversion pipes 13 are communicated with the respective diversion cavities 24. First diversion holes 221 and second diversion holes 222 are arranged axially at intervals on the outer cylinder wall 21. The first diversion holes 221 are communicated with the corresponding diversion cavities 24, and the second diversion holes 222 are communicated with the sandwich cavities of the corresponding sandwich partitions 25. The sandwich cavity of the sandwich partition 25 serves as a diversion outlet 251 for the medium in the cooling partition cavity 23 to flow outwards. Third diversion holes 252 are evenly spaced on the shaft body of the outer sleeve shaft 12. The third diversion holes 252 are communicated with the diversion outlet 251 of the sandwich partition 25 to collect the medium into the medium outlet cavity 121. Along the medium conveying direction, the first diversion holes 221 and the second diversion holes 222 of each cooling partition cavity 23 are arranged far away from each other. The aperture of the first diversion hole 221 is preferably larger than the aperture of the second diversion hole 222, so as to pressurize the cooling medium and make it accelerate through the cooling partition cavity 23 to enhance the heat exchange effect.

[0028] After the cooling medium enters the medium inlet cavity 112 along the medium inlet 111, it is evenly distributed into each shunt cavity 24 through the medium shunt pipe 13. The cooling medium in the shunt cavity 24 enters the corresponding cooling partition cavity 23 through the first diversion hole 221. The cooling medium in the cooling partition cavity 23 exchanges heat with the product passing through the outer cylinder wall 21, thereby cooling the product. After the cooling medium exchanges heat with the product and heats up in the cooling partition cavity 23, it enters the shunt outlet 251 of the sandwich partition plate 25 through the second diversion hole 222, and is concentrated into the medium outlet cavity 121 through the third diversion hole 252, and finally discharged outwards from the medium outlet 122.

[0029] To avoid heat exchange between the heated cooling medium and the unheated cooling medium, the surfaces of the sandwich partition plate 25, the inner cylinder wall 22, the inner sleeve shaft 11, the outer sleeve shaft 12, and the medium shunt pipe 13 are all coated with heat insulation materials.

[0030] The basic principles of the present application have been described in conjunction with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purposes of illustration and easy understanding, and not for limitation. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0031] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present application are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any way. Words such as "including", "comprising", "having", etc. are open-ended words, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used here refer to the word "and / or", and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with each other.

Claims

1. An improved cooling roller, characterized in that, It includes a driving sleeve shaft (1) fixedly coaxial with a roller (2). The roller (2) is in a sleeve shape. The clamping cavity between the outer cylinder wall (21) and the inner cylinder wall (22) of the roller (2) forms a cooling cavity for the cooling medium to flow. Sandwich partition plates (25) are uniformly arranged radially in the roller (2). The sandwich partition plates (25) evenly divide the cooling cavity into several cooling compartments (23). The shaft cavity of the driving sleeve shaft (1) is communicated with each cooling compartment (23) through a diversion assembly. The cooling medium entering the shaft cavity of the driving sleeve shaft (1) enters each cooling compartment (23) through the diversion assembly and then is discharged outward.

2. An improved cooling roll according to claim 1, characterized in that, The driving sleeve shaft (1) includes an inner sleeve shaft (11) and an outer sleeve shaft (12) arranged coaxially. The shaft cavity of the inner sleeve shaft (11) forms a medium inlet cavity (112) for introducing the cooling medium. The annular cavity formed by enclosing the inner sleeve shaft (11) and the outer sleeve shaft (12) forms a medium outlet cavity (121) for discharging the cooling medium. One end of the inner sleeve shaft (11) is open to form a medium inlet (111). The medium inlet cavity (112) is communicated with the corresponding cooling compartment (23) through a diversion assembly. After the sandwich partition plate (25) penetrates the outer cylinder wall (21), one end of it is fixedly connected to the outer sleeve shaft (12), and the other end is fixedly connected to the outer cylinder wall (21). The adjacent two sandwich partition plates (25), the outer cylinder wall (21) and the inner cylinder wall (22) enclose a cooling compartment (23). The clamping cavity of the sandwich partition plate (25) forms a diversion outlet (251). The diversion outlet (251) communicates the cooling compartment (23) and the medium outlet cavity (121).

3. An improved cooling roll according to claim 2, characterized in that, The adjacent two sandwich partition plates (25), the outer sleeve shaft (12) and the inner cylinder wall (22) enclose a diversion cavity (24). A medium diversion pipe (13) penetrating the outer sleeve shaft (12) is arranged radially on the inner sleeve shaft (11). The medium diversion pipe (13) communicates the diversion cavity (24) and the medium inlet cavity (112). The medium diversion pipe (13) and the diversion cavity (24) cooperate to form a diversion assembly.

4. An improved cooling roll according to claim 3, wherein, The first diversion holes (221) communicated with the diversion cavity (24) and the second diversion holes (222) communicated with the clamping cavity of the sandwich partition plate (25) are opened on the inner cylinder wall (22). The third diversion holes (252) communicated with the clamping cavity of the sandwich partition plate (25) are opened on the outer sleeve shaft (12). The aperture of the first diversion hole (221) is larger than that of the second diversion hole (222).

5. An improved cooling roll according to any one of claims 2 to 4, characterized in that The surfaces of the sandwich partition plate (25), the inner cylinder wall (22), the inner sleeve shaft (11) and the outer sleeve shaft (12) are all coated with heat insulation materials.

6. An improved cooling roll according to any one of claims 2 to 4, characterized in that, A medium outlet (122) communicated with the medium outlet cavity (121) is opened on the cylinder cover of the roller (2). The medium outlet (122) and the medium inlet (111) are distributed at both ends of the driving sleeve shaft (1).

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