Flexible roller contact type thin strip cooling device
Technical Field
The utility model relates to a ferrous material deep-processing technical field, more specifically say, relate to a thin web cooling device of flexible roller contact.
Background
The structure and performance of metal materials such as stainless steel need to be improved by thermal refining, and the cooling speed control during thermal refining of thin metal strips and extremely thin strips is a difficult problem. At present, the following cooling modes are generally adopted in the industry: (1) air cooling is adopted, but the air cooling is difficult to achieve high cooling speed, and the control deviation of the cooling speed is large during the air cooling; (2) the fixed slide block type contact heat exchange mode is adopted for cooling, but the surface of a workpiece is easy to scratch, and the contact pressure cannot be too large, so that the heat exchange effect is influenced; (3) the cooling roller with adjustable speed is used for contact cooling, but the cooling speed of the thin strip is slower. In summary, a cooling method for thin strips which is reasonable and effective is still lacking in the industry at present.
Through retrieval, the Chinese patent application number: 2017102640025, filing date: in 2017, day 21 and 4, the name of the invention is: a method and apparatus for cooling a thin strip of flexible contact roller with adjustable cooling rate features that when the thin metal strip such as stainless steel or very thin strip is processed, the contact pressure and area between the roller surface of flexible roller and metal strip are regulated to control the cooling rate of metal strip.
And through retrieval, the Chinese patent application number: 201710811833x, filing date: in 2017, 9 and 11 months, the invention and creation name is: the utility model provides a thin strip cooling device of flexible roll contact, utilizes the contact heat transfer principle in this application, through the contact length and the heat transfer coefficient of adjustment flexible roll and strip, realizes the effective control to cooling speed to can adapt to the rapid cooling to different thickness strips. None of the above applications is a good cooling device, but the research on cooling thin strip in the industry has never been stopped.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The invention aims to overcome the problem of poor cooling effect of cooling a thin strip by using a flexible roller in the prior art, and provides a flexible roller rolling type thin strip cooling device which can effectively increase the contact area between the flexible roller and the thin strip and accelerate the cooling speed of the thin strip, has a simple structure and is suitable for popularization and use.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a flexible roller contact thin strip cooling device, including horizontal parallel arrangement' S left compression roller and right compression roller, all offer the cooling chamber that is used for holding the coolant liquid in left compression roller and the right compression roller, wherein one side that right compression roller was kept away from to left compression roller is equipped with left guide roll, and one side that left compression roller was kept away from to right compression roller is equipped with right guide roll, and thin strip is the S type along the advancing direction.
As a further improvement, the both ends of left compression roller and right compression roller are installed respectively on the fixed block, and the through-hole has all been seted up at the upper and lower both ends of fixed block, and the screw rod passes the through-hole on left compression roller and the right compression roller both ends fixed block and through adjusting nut locking.
As a further improvement, the fixed block bottom at left compression roller both ends all is equipped with the bracing piece, and the bracing piece bottom is equipped with the slider, and the bottom support is provided with along thin web advancing direction with slider matched with track, and the slider passes the track and fixes through fixation nut.
As a further improvement, both ends of the fixed block in the height direction all extend beyond both ends of the left compression roller and the right compression roller in the height direction.
As a further improvement of the utility model, the two ends of the cooling cavity are respectively provided with a cooling liquid inlet channel and a cooling liquid outlet channel.
As a further improvement, the cooling liquid held in the cooling cavity of the left compression roller and the right compression roller is different.
As a further improvement of the utility model, the right compression roller comprises a mandrel, two ends of the mandrel are respectively arranged on the fixed blocks, the periphery of the mandrel is coated with a flexible roller sleeve, and a cavity between the flexible roller sleeve and the mandrel is a cooling cavity; and the structure of the left compression roller is the same as that of the right compression roller.
As a further improvement, the utility model is provided with temperature sensors on the left guide roll and the right guide roll respectively.
As a further improvement, the utility model is at least provided with more than two groups of left compression rollers and right compression rollers which are matched with each other.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a flexible roller contact type thin strip cooling device, the thin strip is S-shaped along the advancing direction, wherein the thin strip surrounds the lower end surface of the left compression roller after being guided by the left guide roller, surrounds the upper end surface of the right compression roller after passing through the gap between the left compression roller and the right compression roller, and is guided out by the right guide roller; the S-shaped coating trend design of the thin strip increases the contact area between the left compression roller and the thin strip, the right compression roller starts to rotate under the driving of the motor and synchronously drives the left compression roller to rotate, the thin strip can move forwards under the action of friction between the lower half cycle of the left compression roller and the thin strip, and after passing through an inter-roller gap between the left compression roller and the right compression roller, the cooling length of the thin strip is increased to the perimeter of a complete compression roller through the upper half cycle of the right compression roller, the surface of the thin strip uniformly contacts with the surface of the roller in the moving process, the thin strip is cooled through contact heat conduction, the cooling area is greatly increased, and the thin strip is beneficial to being rapidly cooled.
(2) The utility model discloses a flexible roller contact type thin strip cooling device, wherein cooling cavities for containing cooling liquid are arranged in the left compression roller and the right compression roller, and when in use, thin strips sequentially pass through the lower half cycle of the left compression roller, between the left compression roller and the right compression roller and the upper half cycle of the right compression roller and are cooled by the cooling liquid; the both ends in cooling chamber are equipped with coolant liquid inlet channel and coolant liquid outlet channel respectively, and the coolant liquid in the cooling chamber is circulating flow promptly, can in time take away the heat, can effectively improve the cooling rate of thin strip.
(3) The utility model discloses a flexible roller contact type thin strip cooling device, one side of a left compression roller, which is far away from a right compression roller, is provided with a left guide roller, and one side of the right compression roller, which is far away from the left compression roller, is provided with a right guide roller; the left guide roll and the right guide roll are respectively arranged on two sides of the left compression roll and the right compression roll, and play a role in guiding and fixing the thin strip, so that the stability in the cooling process is improved.
(4) The utility model discloses a thin strip cooling device of flexible roller contact, right side compression roller includes the dabber, install respectively on the fixed block at the both ends of dabber, the periphery cladding of dabber has flexible roller shell, cavity between flexible roller shell and the dabber is the cooling chamber, flexible roller shell is made by the metal material that has high coefficient of thermal conductivity, flexible roller shell flattens by elasticity under the pressure effect during use, area of contact between roll surface and the thin strip has been increased on the one hand, on the other hand improves the contact state through increasing contact pressure, increase heat transfer coefficient, thereby improve the cooling rate.
(5) The utility model discloses a thin cooling device of strip of flexible roller contact, the through-hole has all been seted up at the upper and lower both ends of fixed block, the screw rod passes the through-hole on left compression roller and the right compression roller both ends fixed block and through adjusting nut locking, through screwing up or loosening adjusting nut, adjust the clearance between left compression roller and the right compression roller, and then contact pressure and area of contact between roll surface and the thin strip of taking about the adjustment, thereby realize the regulation and control to thin strip cooling rate, and can adapt to the quick cooling to different thickness strips.
(6) The utility model discloses a thin section of thick bamboo cooling device of flexible roll contact, the both ends on the fixed block direction of height all extend beyond the both ends on left compression roller and the right compression roller direction of height, prevent promptly in the width direction both sides of left compression roller and right compression roller that thin section of thick bamboo prevents that the skew blocks, prevents that thin section of thick bamboo from the roll surface of the in-process skew left compression roller of motion and right compression roller, avoids influencing advancing and cooling of thin section of thick bamboo.
Drawings
FIG. 1 is a schematic view of the contact cooling principle of the compliant roller of the present invention;
fig. 2 is a schematic top view of the flexible roll contact thin strip cooling apparatus of the present invention;
FIG. 3 is a schematic structural view of the middle left compression roller of the present invention;
fig. 4 is the structure schematic diagram of the middle-right compression roller of the utility model.
The reference numerals in the schematic drawings illustrate:
100. a left press roll; 110. a left guide roller; 120. a motor; 200. a right press roll; 210. a right guide roller; 300. a thin strip of material; 101. a mandrel; 102. a flexible roll shell; 103. a cooling chamber; 104. a fixed block; 105. adjusting the nut; 106. a screw; 201. a support bar; 202. a slider; 203. a bottom bracket; 204. and (5) fixing the nut.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention will be further described with reference to the following examples.
Example 1
Referring to fig. 1 to 4, the flexible roller contact type thin strip cooling device of the present embodiment includes a left pressing roller 100 and a right pressing roller 200 horizontally arranged in parallel, where the right pressing roller 200 is a driving roller and is driven by a motor 120 to rotate, and as shown in the orientation shown in fig. 1, the right pressing roller 200 is driven by the motor 120 to rotate clockwise, and the left pressing roller 100 is a driven roller and is driven by friction between the left pressing roller 100 and the right pressing roller 200 to rotate counterclockwise. Wherein, one side of the left press roll 100 far away from the right press roll 200 is provided with a left guide roll 110, and one side of the right press roll 200 far away from the left press roll 100 is provided with a right guide roll 210. Specifically, as shown in the orientation of fig. 1, the left side of the left press roll 100 is provided with the left guide roll 110, and the thin strip 300 passes over the upper roll surface of the left guide roll 110; the right guide roll 210 is provided to the right side of the right press roll 200, and the thin strip 300 passes through the lower roll surface of the right guide roll 210. The left guide roll 110 and the right guide roll 210 are respectively arranged on two sides of the left press roll 100 and the right press roll 200, and play a role in guiding and fixing the thin strip 300, so that the stability in the cooling process is improved. And the thin strip 300 is S-shaped along the traveling direction, specifically, as shown in fig. 1, in this embodiment, the thin strip 300 is guided by the left guide roll 110, surrounds the lower end surface of the left press roll 100, passes through the gap between the left press roll 100 and the right press roll 200, surrounds the upper end surface of the right press roll 200, and is guided out by the right guide roll 210. The design of the S-shaped coating trend of the thin strip 300 increases the contact area between the left press roll 100 and the thin strip 300 and between the right press roll 200 and the thin strip 300, the right press roll 200 starts to rotate under the driving of the motor 120 and synchronously drives the left press roll 100 to rotate, the thin strip 300 can move forwards under the action of the friction force between the lower half cycle of the left press roll 100 and the thin strip 300, the cooling length of the thin strip 300 is increased to the circumference of a complete press roll after passing through the gap between the left press roll 100 and the right press roll 200 and then through the upper half cycle of the right press roll 200, the surface of the thin strip 300 uniformly contacts with the roll surface in the moving process, the thin strip 300 is cooled through contact heat conduction, the cooling area is greatly increased, and the thin strip 300 is favorably and rapidly cooled.
In this embodiment, cooling cavities 103 for containing cooling liquid are respectively formed in the left pressing roller 100 and the right pressing roller 200, and as shown in the orientation shown in fig. 1, when the thin strip 300 is used, the thin strip sequentially passes through the lower half circumference of the left pressing roller 100, the space between the left pressing roller 100 and the right pressing roller 200, and the upper half circumference of the right pressing roller 200, and is cooled by the cooling liquid. The two ends of the cooling cavity 103 are respectively provided with a cooling liquid inlet channel and a cooling liquid outlet channel, namely, the cooling liquid in the cooling cavity 103 circularly flows, so that heat can be taken away in time, and the cooling speed of the thin strip 300 can be effectively improved.
As shown in fig. 2 to 4, in the present embodiment, both ends of the left pressing roller 100 and the right pressing roller 200 are respectively mounted on the fixing blocks 104, specifically, the right pressing roller 200 includes the mandrel 101, both ends of the mandrel 101 are respectively mounted on the fixing blocks 104, the center of the fixing block 104 is engaged with the mandrel 101 through a rotating bearing, the motor 120 drives the mandrel 101 to rotate, and the fixing blocks 104 are kept stationary. The periphery of dabber 101 is wrapped with flexible roller shell 102, and the cavity between flexible roller shell 102 and the dabber 101 is cooling chamber 103, and flexible roller shell 102 is made by the metal material that has high coefficient of thermal conductivity, and flexible roller shell 102 is flattened by elasticity under the pressure effect during use, has increased the area of contact between roll surface and the thin strip 300 on the one hand, and on the other hand improves the contact state through increasing contact pressure, increases heat transfer coefficient to improve cooling speed. Wherein the structure of the left press roll 100 is the same as that of the right press roll 200. As shown in fig. 3, in this embodiment, through holes are formed at both upper and lower ends of the fixing block 104, and the screw 106 passes through the through holes on the fixing block 104 at both ends of the left pressing roller 100 and the right pressing roller 200 and is locked by the adjusting nut 105. Specifically, as shown in fig. 2, the fixing blocks 104 on the left sides of the left and right press rolls 100 and 200 are connected together by the upper and lower screws 106, and the fixing blocks 104 on the right sides of the left and right press rolls 100 and 200 are also connected together by the upper and lower screws 106, that is, the left and right press rolls 100 and 200 are connected together by the 4 screws 106, and the gap between the left and right press rolls 100 and 200 is adjusted by screwing or unscrewing the adjusting nut 105, so as to adjust the contact pressure and the contact area between the left and right roll surfaces and the thin strip 300, thereby adjusting the cooling speed of the thin strip 300 and adapting to the rapid cooling of strips with different thicknesses.
As shown in fig. 3, in this embodiment, the bottom of the fixing block 104 at both ends of the left pressing roll 100 is provided with a supporting rod 201 for supporting the left pressing roll 100, so that the overall structure is more stable, the bottom of the supporting rod 201 is provided with a sliding block 202, the bottom bracket 203 is provided with a track matched with the sliding block 202 along the traveling direction of the thin strip 300, the sliding block 202 passes through the track and is fixed by a fixing nut 204, and the sliding block 202 is matched with the track, so that the position of the supporting rod 201 can be adjusted correspondingly when the adjusting nut 105 is screwed or loosened. As shown in fig. 3, in this embodiment, the bottom of the fixing block 104 at both ends of the right pressing roller 200 is also provided with a support rod 201, and the support rod 201 on the right pressing roller 200 is fixedly connected to the bottom bracket 203.
As shown in fig. 3 and 4, in the present embodiment, both ends of the fixing block 104 in the height direction extend beyond both ends of the left pressing roller 100 and the right pressing roller 200 in the height direction, that is, the thin strip 300 is prevented from being offset-blocked at both sides of the left pressing roller 100 and the right pressing roller 200 in the width direction, so that the thin strip 300 is prevented from being offset from the roller surfaces of the left pressing roller 100 and the right pressing roller 200 during the movement, and the advance and cooling of the thin strip 300 are prevented from being affected.
The cooling liquid that holds in the cooling chamber 103 of left compression roller 100 and right compression roller 200 is different in this embodiment, and specifically, the cooling liquid that holds in left compression roller 100 in this embodiment is cooling water, and the cooling liquid that holds in the cooling chamber 103 of right compression roller 200 is cooling oil, further changes the heat transfer coefficient of left compression roller 100 and right compression roller 200, improves cooling rate. In this embodiment, the left guide roll 110 and the right guide roll 210 are respectively provided with a temperature sensor for detecting the temperature of the thin strip 300 before and after cooling, so that an operator can conveniently observe whether the temperature of the thin strip 300 after cooling meets the standard, and adjust the gap between the left press roll 100 and the right press roll 200 according to the temperature of the thin strip 300 before and after cooling to change the heat transfer coefficient.
In the embodiment, at least two groups of left press rolls 100 and right press rolls 200 which are matched left and right are arranged, so that the thin strip 300 can be cooled in multiple passes; in production practice, single-pass or multi-pass cooling can be made according to the thickness of the thin strip 300, the thickness range of the thin strip 300 which can be cooled is enlarged, the cooling efficiency of the thin strip 300 is improved, and the thickness range of the thin strip 300 is 0.01mm-0.5 mm.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.