阅读说明：本技术 一种纵拉机的趋零温差螺旋流道热交换辊 (Zero-temperature-difference-approaching spiral flow channel heat exchange roller of longitudinal drawing machine ) 是由 宋超 于 2021-10-12 设计创作，主要内容包括：本发明涉及双向拉伸光学薄膜生产技术领域,具体为一种纵拉机的趋零温差螺旋流道热交换辊,包括传热筒身、第一端盖和第二端盖,所述第一端盖和第二端盖分布于传热筒身的两端,所述传热筒身的内部设置有导流机构和螺旋片,所述导流机构包括回流管、进液管和隔板,所述回流管的外表面套接有连接座,所述连接座的外表面套设有滚珠轴承和进液接头,所述进液接头通过滚珠轴承与连接座活动连接,所述进液接头的外表面开设有弧形槽,弧形槽内嵌合有密封圈,所述连接座的外表面套接有伞形密封箍,所述伞形密封箍与密封圈相抵,所述伞形密封箍的外表面套设有固定罩。本发明具有伞形密封箍,提高动态密封性,保持辊面趋零温差。(The invention relates to the technical field of biaxial stretching optical film production, in particular to a zero-temperature-difference-approaching spiral flow channel heat exchange roller of a longitudinal drawing machine, which comprises a heat transfer cylinder body, a first end cover and a second end cover, the first end cover and the second end cover are distributed at two ends of the heat transfer cylinder body, a flow guide mechanism and a spiral sheet are arranged inside the heat transfer cylinder body, the flow guide mechanism comprises a return pipe, a liquid inlet pipe and a clapboard, the outer surface of the return pipe is sleeved with a connecting seat, the outer surface of the connecting seat is sleeved with a ball bearing and a liquid inlet joint, the liquid inlet joint is movably connected with the connecting seat through the ball bearing, the outer surface of the liquid inlet joint is provided with an arc-shaped groove, a sealing ring is embedded in the arc-shaped groove, the outer surface of the connecting seat is sleeved with an umbrella-shaped sealing hoop, the umbrella-shaped sealing hoop is abutted to the sealing ring, and a fixing cover is sleeved on the outer surface of the umbrella-shaped sealing hoop. The invention has the umbrella-shaped sealing hoop, improves the dynamic sealing property and keeps the zero-approaching temperature difference of the roller surface.)

1. The utility model provides a indulge zero difference in temperature spiral flow way heat exchange roller that draws machine, includes heat transfer stack shell (1), first end cover (2) and second end cover (3) distribute in the both ends of heat transfer stack shell (1), its characterized in that: the heat transfer cylinder body is characterized in that a flow guide mechanism (5) and a spiral piece (6) are arranged inside the heat transfer cylinder body (1), the flow guide mechanism (5) comprises a return pipe (51), a liquid inlet pipe (52) and a partition plate (54), the return pipe (51) is sleeved outside the liquid inlet pipe (52), liquid discharge pipes (53) are uniformly distributed on the surface of the return pipe (51), the inner cavity of the liquid inlet pipe (52) is communicated with the inner cavity of the heat transfer cylinder body (1) through the liquid discharge pipes (53), through holes (55) are uniformly formed in the outer surface of the return pipe (51), a connecting seat (9) is sleeved on the outer surface of the return pipe (51), a ball bearing (10) and a liquid inlet joint (7) are sleeved on the outer surface of the connecting seat (9), the liquid inlet joint (7) is movably connected with the connecting seat (9) through the ball bearing (10), an arc-shaped groove is formed in the outer surface of the liquid inlet joint (7), the sealing ring (11) is embedded in the arc-shaped groove, an umbrella-shaped sealing hoop (12) is sleeved on the outer surface of the connecting seat (9), the umbrella-shaped sealing hoop (12) is abutted to the sealing ring (11), a fixing cover (8) is sleeved on the outer surface of the umbrella-shaped sealing hoop (12), one end of the fixing cover (8) is abutted to the umbrella-shaped sealing hoop (12), and the other end of the fixing cover (8) is fixedly connected with the second end cover (3) through a bolt.

2. The zero-temperature-difference-seeking spiral flow channel heat exchange roller of a longitudinal drawing machine as claimed in claim 1, wherein: one side of the first end cover (2) abutting against the heat transfer cylinder body (1) is in a circular truncated cone shape, and a conical sealing ring is clamped between the first end cover (2) and the heat transfer cylinder body (1).

3. The zero-temperature-difference-seeking spiral flow channel heat exchange roller of a longitudinal drawing machine as claimed in claim 1, wherein: one ends of the return pipe (51) and the liquid inlet pipe (52) are abutted against the center of the first end cover (2), and the other ends of the return pipe (51) and the liquid inlet pipe (52) penetrate through the center of the second end cover (3).

4. The zero-temperature-difference-seeking spiral flow channel heat exchange roller of a longitudinal drawing machine as claimed in claim 1, wherein: the spiral fins (6) are uniformly fixed on the outer surface of the return pipe (51), the spiral fins (6) are arranged spirally, a heat exchange cavity is formed between every two adjacent spiral fins (6) and the heat transfer cylinder body (1), and the surface thickness of each spiral fin (6) is increased progressively from the liquid discharge pipe (53) clockwise to the direction of the through hole (55).

5. The zero-temperature-difference-seeking spiral flow channel heat exchange roller of a longitudinal drawing machine as claimed in claim 4, wherein: the partition plate (54) is arranged between the liquid discharge pipe (53) and the through hole (55), two sides of the partition plate (54) are fixedly connected with the spiral piece (6), and the outer surface of the spiral piece (6) is wrapped with the heat conducting cylinder (4).

6. The zero-temperature-difference-seeking spiral flow channel heat exchange roller of a longitudinal drawing machine as claimed in claim 5, wherein: the thickness of the heat conducting cylinder (4) is gradually reduced from a liquid discharge pipe (53) to the direction of the through hole (55) clockwise, and two ends of the clapboard (54) are respectively fixedly connected with the return pipe (51) and the heat conducting cylinder (4).

7. The zero-temperature-difference-seeking spiral flow channel heat exchange roller of a longitudinal drawing machine as claimed in claim 1, wherein: the outer surface of the connecting seat (9) is conical, and the shape of the inner wall of the liquid inlet joint (7) is matched with the shape of the outer surface of the connecting seat (9).

Technical Field

The invention relates to the technical field of production of biaxially oriented optical films, in particular to a zero-temperature-difference-approaching spiral flow channel heat exchange roller of a longitudinal drawing machine.

Background

The biaxially oriented film industry is an important branch of the plastics industry, wherein biaxially oriented film equipment is used as a main component of a hot drawing machine, and a heat exchange roll is an extremely important component of the equipment. The heat exchange roller is divided into a heating roller, an electromagnetic heating roller and a steam heating roller.

Unlike other roll forms, the runner roll can be freely switched between heating and cooling, and is always the mainstream of the current biaxial stretching film roll.

The main factor influencing the quality of the stretched optical film is the heat exchange effect of the biaxially oriented film roller, the more uniform the heat of the surface of the roller is, the better the quality of the stretched optical film is, the uniform heat exchange of the surface of the roller is realized, the best mode is that the roller rolls at a uniform speed, and the biggest problem of the existing rollable roller is that the problem of the sealing property at the position of a heat guide pipe is easy to cause liquid leakage.

Therefore, it is desirable to design a zero-temperature-difference spiral flow channel heat exchange roller of a longitudinal drawing machine to solve the above problems.

Disclosure of Invention

The invention aims to provide a zero-temperature-difference-approaching spiral flow channel heat exchange roller of a longitudinal drawing machine, which aims to solve the problem that liquid leakage is easily caused at a heat conduction pipe in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a zero-temperature-difference-approaching spiral flow channel heat exchange roller of a longitudinal drawing machine comprises a heat transfer cylinder body, a first end cover and a second end cover, wherein the first end cover and the second end cover are distributed at two ends of the heat transfer cylinder body, a flow guide mechanism and a spiral sheet are arranged inside the heat transfer cylinder body, the flow guide mechanism comprises a return pipe, a liquid inlet pipe and a partition plate, the outer side of the liquid inlet pipe is sleeved with the return pipe, liquid discharge pipes are uniformly distributed on the surface of the return pipe, the inner cavity of the liquid inlet pipe is communicated with the inner cavity of the heat transfer cylinder body through the liquid discharge pipes, through holes are uniformly formed in the outer surface of the return pipe, a connecting seat is sleeved on the outer surface of the return pipe, a ball bearing and a liquid inlet joint are sleeved on the outer surface of the connecting seat, the liquid inlet joint is movably connected with the connecting seat through the ball bearing, an arc-shaped groove is formed in the outer surface of the liquid inlet joint, and a sealing ring is embedded in the arc-shaped groove, the outer surface of connecting seat has cup jointed umbrella-type sealing hoop, umbrella-type sealing hoop offsets with the sealing washer, the outer surface cover of umbrella-type sealing hoop is equipped with fixed cover, the one end and the umbrella-type sealing hoop of fixed cover offset, and the other end of fixed cover passes through bolt and second end cover fixed connection.

Preferably, one side of the first end cover, which is abutted against the heat transfer cylinder body, is in a circular truncated cone shape, and a conical sealing ring is clamped between the first end cover and the heat transfer cylinder body.

Preferably, one end of the return pipe and one end of the liquid inlet pipe are abutted against the center of the first end cover, and the other end of the return pipe and the other end of the liquid inlet pipe penetrate through the center of the second end cover.

Preferably, the spiral pieces are uniformly fixed on the outer surface of the return pipe and are spirally arranged, a heat exchange cavity is formed between every two adjacent spiral pieces and the heat transfer cylinder body, and the surface thickness of each spiral piece is increased gradually towards the direction of the through hole from the liquid discharge pipe clockwise.

Preferably, the partition plate is arranged between the liquid discharge pipe and the through hole, two sides of the partition plate are fixedly connected with the spiral piece, and the outer surface of the spiral piece is wrapped with the heat conducting cylinder.

Preferably, the thickness of the heat-conducting cylinder is gradually reduced towards the direction of the through hole clockwise by a liquid discharge pipe, and two ends of the partition plate are respectively fixedly connected with the return pipe and the heat-conducting cylinder.

Preferably, the outer surface of the connecting seat is conical, and the shape of the inner wall of the liquid inlet joint is matched with the shape of the outer surface of the connecting seat.

Compared with the prior art, the invention has the beneficial effects that: the zero-temperature-difference-approaching spiral flow channel heat exchange roller of the longitudinal drawing machine is provided with an umbrella-shaped sealing hoop, the dynamic sealing performance is improved, and the zero-temperature-difference-approaching roller surface is kept.

(1) The outer surface of the return pipe is fixedly provided with the connecting seat, the outer surface of the connecting seat is movably connected with the liquid inlet connector, the liquid inlet connector is embedded with the connecting position of the connecting seat to form a sealing ring, the sealing ring is abutted by the umbrella-shaped sealing hoop fixed on the connecting seat, the movable sealing performance between the liquid inlet connector and the connecting seat is ensured, the sealing ring can be always abutted against the liquid inlet connector and the connecting seat through the abutting of the umbrella-shaped sealing hoop, the sealing ring is prevented from being abraded, the sealing performance between the liquid inlet connector and the connecting seat is influenced, and the dynamic sealing performance is improved.

(2) Through evenly being fixed with the flight on the back flow, and with the thickness of flight by fluid-discharge tube department towards through-hole department increase progressively, make the rivers state that flows towards through-hole department more aggressive, improve the velocity of flow and can take away more heats, thermal loss in the rivers flow makes roll surface temperature zero trend, cooperate thermal-insulated of heat-conducting tube again, further improve the homogeneity of heat transfer, the thickest department of heat-conducting tube is just in time relative with the thickest department of flight simultaneously, just compensate weight difference of upper and lower extreme of exchange roller, guarantee the dynamic balance of exchange roller.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional elevation view of the structure of the present invention;

FIG. 3 is a schematic side cross-sectional view of the structure of the present invention;

FIG. 4 is a schematic overall view of the heat transfer shaft and the flow guide mechanism of FIG. 1 in accordance with the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 2 according to the present invention;

FIG. 7 is a side view of the umbrella-shaped sealing band of FIG. 2 according to the present invention.

In the figure: 1. a heat transfer barrel; 2. a first end cap; 3. a second end cap; 4. a heat conducting tube; 5. a flow guide mechanism; 51. a return pipe; 52. a liquid inlet pipe; 53. a liquid discharge pipe; 54. a partition plate; 55. a through hole; 6. a spiral sheet; 7. a liquid inlet joint; 8. a fixed cover; 9. a connecting seat; 10. a ball bearing; 11. a seal ring; 12. an umbrella-shaped sealing hoop.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides an embodiment:

a zero-temperature-difference-approaching spiral runner heat exchange roller of a longitudinal drawing machine comprises a heat transfer cylinder body 1, a first end cover 2 and a second end cover 3, wherein the first end cover 2 and the second end cover 3 are distributed at two ends of the heat transfer cylinder body 1, a flow guide mechanism 5 and a spiral sheet 6 are arranged inside the heat transfer cylinder body 1, the flow guide mechanism 5 comprises a return pipe 51, a liquid inlet pipe 52 and a partition plate 54, the return pipe 51 is sleeved outside the liquid inlet pipe 52, liquid discharge pipes 53 are uniformly distributed on the surface of the return pipe 51, the inner cavity of the liquid inlet pipe 52 is communicated with the inner cavity of the heat transfer cylinder body 1 through the liquid discharge pipes 53, through holes 55 are uniformly formed in the outer surface of the return pipe 51, the inner cavity of the heat transfer cylinder body 1 is communicated with the inner cavity of the return pipe 51 through the through holes 55, heat exchange media enter through the liquid inlet pipe 52 and then are discharged into the heat transfer cylinder body 1 through the liquid discharge pipes 53 for heat exchange, the heat medium is discharged into the return pipe 51 through the through holes 55 after heat exchange, a cycle is formed.

The outer surface of the return pipe 51 is sleeved with a connecting seat 9, the outer surface of the connecting seat 9 is sleeved with a ball bearing 10 and a liquid inlet connector 7, the liquid inlet connector 7 is movably connected with the connecting seat 9 through the ball bearing 10, the outer surface of the liquid inlet connector 7 is provided with an arc-shaped groove, a sealing ring 11 is embedded in the arc-shaped groove, the sealing ring 11 is abutted between the liquid inlet connector 7 and the connecting seat 9 to ensure the sealing property between the liquid inlet connector 7 and the connecting seat 9, the outer surface of the connecting seat 9 is sleeved with an umbrella-shaped sealing hoop 12, the sealing ring 11 is abutted through the umbrella-shaped sealing hoop 12 fixed on the connecting seat 9 to ensure the movable sealing property between the liquid inlet connector 7 and the connecting seat 9, the sealing ring 11 can be always abutted between the liquid inlet connector 7 and the connecting seat 9 through the abutment of the umbrella-shaped sealing hoop 12, the influence on the sealing property between the liquid inlet connector 7 and the connecting seat 9 after the abrasion of the sealing ring 11 is avoided, and the umbrella-shaped sealing hoop 12 is abutted against the sealing ring 11, the outer surface cover of umbrella-type sealing hoop 12 is equipped with fixed cover 8, and the one end of fixed cover 8 offsets with umbrella-type sealing hoop 12, and the other end of fixed cover 8 passes through bolt and second end cover 3 fixed connection, and fixed cover 8 plays and carries on spacingly to umbrella-type sealing hoop 12, protects sealing washer 11 and umbrella-type sealing hoop 12 simultaneously.

Further, as shown in fig. 5, one side of the first end cover 2, which abuts against the heat transfer cylinder 1, is in a truncated cone shape, and a conical sealing ring is clamped between the first end cover 2 and the heat transfer cylinder 1, so that the sealing property between the first end cover 2 and the heat transfer cylinder 1 is improved.

Further, as shown in fig. 2, one end of the return pipe 51 and one end of the liquid inlet pipe 52 are abutted against the center of the first end cap 2, a positioning groove (not shown) is formed in the center of the first end cap 2, so that the return pipe 51 and the liquid inlet pipe 52 are fixedly connected with the first end cap 2, and the other ends of the return pipe 51 and the liquid inlet pipe 52 penetrate through the center of the second end cap 3, so as to be conveniently connected with an external pipeline.

Further, as shown in fig. 2, the spiral fins 6 are uniformly fixed on the outer surface of the return pipe 51, the spiral fins 6 are arranged spirally, a heat exchange cavity is formed between two adjacent spiral fins 6 and the heat transfer cylinder 1, the surface thickness of the spiral fins 6 is increased clockwise from the liquid discharge pipe 53 to the through hole 55, so that the state of water flowing to the through hole 55 is more accelerated, taking the heat exchange roller with a cooling function as an example, the flow speed is increased to take away more heat, and the heat loss in the water flow makes the temperature of the roller surface approach to zero.

Further, as shown in fig. 2-3, the partition plate 54 is disposed between the liquid discharge pipe 53 and the through hole 55, two sides of the partition plate 54 are fixedly connected with the spiral piece 6, the outer surface of the spiral piece 6 is wrapped with the heat conducting cylinder 4, the thickest part of the heat conducting cylinder 4 is exactly opposite to the thickest part of the spiral piece 6, so as to exactly compensate the weight difference between the upper end and the lower end of the exchange roller, and ensure the dynamic balance of the exchange roller.

Further, as shown in fig. 2-3, the thickness of the heat conducting cylinder 4 decreases from the drain pipe 53 to the through hole 55 clockwise, and two ends of the partition plate 54 are fixedly connected with the return pipe 51 and the heat conducting cylinder 4, respectively.

Further, as shown in fig. 2, the outer surface of the connecting seat 9 is conical, the shape of the inner wall of the liquid inlet joint 7 is matched with that of the outer surface of the connecting seat 9, the conical contact surface utilizes the characteristic that water flows to the lower part, the leakage situation can be reduced, and the sealing ring 11 is matched to achieve a better sealing effect.

The working principle is as follows: when in use, a pipeline for providing heat-conducting medium from the outside is fixedly connected with the liquid inlet joint 7, the heat-exchanging medium enters from the liquid inlet pipe 52, flows into the heat-exchanging cavity through the liquid discharge pipe 53, flows clockwise to the through hole 55 in the heat-exchanging cavity to exchange heat with the heat-transferring cylinder body 1, the temperature of the heat-exchanging medium is determined, the temperature of the surface of the heat-transferring cylinder body 1 is determined, the spiral sheets 6 are uniformly fixed on the return pipe 51, the thickness of the spiral sheets 6 is increased from the position of the liquid discharge pipe 53 to the position of the through hole 55, so that the state of water flow flowing towards the position of the through hole 55 is more rapid, more heat can be taken away by increasing the flow speed, the loss of heat in the water flow is reduced, the temperature of the roller surface is reduced, the heat insulation of the heat-transferring cylinder 4 is matched, the uniformity of heat exchange is further improved, meanwhile, the thickest position of the heat-transferring cylinder 4 is just opposite to the thickest position of the spiral sheets 6, and the weight difference of the upper end and the lower end of the heat-exchanging roller is made up, the dynamic balance of the exchanging roller is ensured.

A sealing ring 11 is embedded at the joint of the liquid inlet connector 7 and the connecting seat 9, and the sealing ring 11 is abutted through an umbrella-shaped sealing hoop 12 fixed on the connecting seat 9, so that the movable sealing performance between the liquid inlet connector 7 and the connecting seat 9 is ensured.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.