JP2000088430A - Spray nozzle unit for belt type cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cooling efficiency by reducing the number of spray nozzles, preventing clogging of a spray nozzle and further enhancing a contact efficiency of a refrigerant injected toward a back surface of a forward path side of a belt with the belt. SOLUTION: In the spray nozzle unit 6 for an endless belt type cooler comprising a spray nozzle 6c arranged on a back surface of a forward path side of the belt to be circularly driven to inject a refrigerant, a turning tube 6b is revolvably mounted at a refrigerant supply tube arranged at a back surface position of the forward path side of the belt via a rotary tube joint 6a, the nozzle 6c is mounted at an end of the tube 6b to inject the refrigerant, and further the tube 6b is turned by an injecting force of the refrigerant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray nozzle device for a belt-type cooler, and more particularly, to reducing the number of spray nozzles and preventing the spray nozzles from being clogged. A spray of a belt-type cooler that improves the cooling efficiency by increasing the contact efficiency between the cooling water and the coolant such as a cooling liquid (hereinafter, simply referred to as “refrigerant”) and the belt that injects the water toward the belt. The present invention relates to a nozzle device.

[0002]

2. Description of the Related Art Conventionally, in order to solidify an object to be cooled such as a molten paint, a pigment, a chemical, a synthetic resin into a plate having a predetermined thickness,
A belt-type cooler that cools and solidifies by continuously supplying the molten object to be cooled to an upper surface on the outward path of an endless belt driven by circulation is used.

[0003] In this belt type cooler, a spray nozzle for injecting a refrigerant is disposed on the back side of the forward side of a belt for supplying a molten material to be cooled. By injecting a coolant from the spray nozzle, the molten object to be continuously supplied to the upper surface on the outward path side of the belt is circulated and cooled through the belt.

[0004] By the way, a spray nozzle for injecting a refrigerant disposed on the back side of the belt on the outward path side of the belt type cooler conventionally can uniformly inject the refrigerant on the entire back surface of the belt on the outward path side. Further, a large number of spray nozzles are arranged in a matrix in the width direction and the traveling direction on the outward path side of the belt.

[0005]

However, when a large number of spray nozzles are arranged in a matrix in the width direction and the traveling direction on the outward path side of the belt, the nozzle holes of each spray nozzle are formed small. However, as a result, the nozzle holes of the spray nozzle are likely to be clogged due to impurities, scale, etc., contained in the refrigerant, thereby reducing the spray amount of the refrigerant and decreasing the cooling efficiency. was there. Further, when the nozzle hole of the spray nozzle is clogged, for example, it is necessary to periodically clean the spray nozzle, but since the number of spray nozzles is large, it takes time to clean the spray nozzle. However, since the operation of the belt-type cooler needs to be stopped during this time, there is a possibility that the work of cooling and solidifying the object to be cooled may be hindered. Further, in the conventional belt-type cooler, since the spray nozzle is disposed so as to inject the refrigerant in a direction directly above the lower side of the back of the belt on the outward path side, the refrigerant that has hit the rear side of the belt on the outward path side is used. Is sprayed and falls down in a thin layer along the belt due to the spray pressure, which prevents the refrigerant newly sprayed from the spray nozzle from directly hitting the back surface of the belt on the outward path, and There is a problem that the cooling efficiency of the cooling material is reduced.

The present invention has been made in view of the above-mentioned problems of the conventional belt-type cooler, and has reduced the number of spray nozzles, prevented the spray nozzles from being clogged, and further reduced the number of spray nozzles toward the back of the belt on the outward path side. It is an object of the present invention to provide a spray nozzle device of a belt-type cooler capable of improving a cooling efficiency by increasing a contact efficiency between a refrigerant to be injected and a belt.

[0007]

In order to achieve the above object, a spray nozzle device for a belt-type cooler according to the present invention is provided.
In a spray nozzle device of a belt-type cooler in which a spray nozzle for injecting a refrigerant is arranged on a back surface of an endless belt that is circulated and driven on an outward path, a refrigerant piped at a back position on an outward path side of the belt. A rotary pipe joint attached to the supply pipe, a swivel pipe rotatably mounted on the rotary pipe joint, and a swivel pipe attached to the tip of the swivel pipe, injecting the refrigerant, and causing the swirl pipe to react by the injection reaction force of the refrigerant. And a spray nozzle which is turned.

In the spray nozzle device of this belt-type cooler, the swirling pipe is swirled by the reaction force of the refrigerant sprayed from the spray nozzle at the back position on the outward path side of the belt, so that the spray nozzle sprays from the spray nozzle. While sequentially changing the position at which the applied refrigerant hits the back side on the outward path side of the belt, the injection range of the refrigerant can be diffused, whereby the number of spray nozzles can be reduced, and, along with this, the spray nozzles Reduces the risk of clogging, and further applies the refrigerant injected from the spray nozzle directly to the back side of the forward side of the belt,
By increasing the contact efficiency between the refrigerant and the belt, the cooling efficiency can be improved.

In this case, the swivel tube can be attached so as to be inclined toward the center of the back surface on the outward path side of the belt.

[0010] Thus, the refrigerant is injected toward the center of the back surface on the outward path side of the belt, so that the refrigerant can be prevented from scattering outside the belt, and the cooling efficiency can be further improved.

Further, the spray nozzles can be mounted on both sides of the tip of the swirling tube at different mounting angles.

This makes it possible to easily perform the adjustment for uniformly injecting the refrigerant over the entire widthwise rear surface of the belt on the outward path side, thereby further improving the cooling efficiency.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a spray nozzle device for a belt-type cooler according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 7 show an embodiment of a spray nozzle device for a belt-type cooler according to the present invention. As shown in FIG. 7, a belt-type cooler to which the spray nozzle device of the present invention is applied includes two rollers 2 having a body frame F rotatably provided with an endless steel belt 1 made of a stainless steel plate or the like. It is constructed so as to be stretched between the three and driven by circulation. In this case, one of the two rollers 2 and 3, for example, in this embodiment, the roller 2
Is rotated by a driving device 4, and the other roller 3 is provided with a tensioning device (not shown) so that the steel belt 1 stretched between the rollers 2 and 3 holds the tension constant. To be driven in circulation. Further, a spray receiver 5 is disposed between the forward side and the backward side of the steel belt 1 over substantially the entire length and the entire width of the steel belt 1, and between the spray receiver 5 and the forward side of the steel belt 1, That is, a plurality of spray nozzle devices 6 for injecting the refrigerant toward the back surface of the steel belt 1 on the outward path side are provided on the back surface of the steel belt 1 on the outward path side.

The spray nozzle device 6 includes a plurality of the spray nozzle devices 6 spaced apart from each other at a predetermined interval so that the refrigerant can be sprayed over the entire length and the entire width of the back surface of the steel belt 1 on the outward path side. 70-12 in the length direction
Two steel belts 1 are arranged in the width direction of the steel belt 1 at an interval of 0 cm. The spray nozzle device 6 is capable of diffusing the refrigerant injection range while sequentially changing the position where the injected refrigerant hits the back surface of the steel belt 1 on the outward path, and the refrigerant injected from the spray nozzle device 6 After hitting the back side of the steel belt 1 on the outward path side, the steel belt 1 falls into the spray receiver 5, is collected, returns to the cooling water tank T, is cooled, and is sent to the spray nozzle device 6 by the pump P. Circulate.

In the spray nozzle device 6, a supply pipe 7 for supplying a refrigerant is disposed in the main body frame F, the tip of the supply pipe 7 is branched in accordance with the installation position of the spray nozzle device 6, and the branched branch pipe 7a is connected to the spray nozzle 7a. The device 6 is connected. Then, as shown in FIGS. 1 and 2, the spray nozzle device 6 includes a rotary pipe joint 6 a fixed to the branch pipe 7 a,
A swivel pipe 6b is provided so as to penetrate the rotary pipe joint 6a, and spray nozzles 6c, 6c such as a flat spray nozzle and an off-center flat spray nozzle are selectively provided at both ends of the swivel pipe 6b. As will be described later, it is mounted so that its mounting angle can be changed, and by turning the swivel pipe 6b around the rotary pipe joint 6a as a support shaft by the injection reaction force of the refrigerant injected from the spray nozzles 6c, 6c. In addition, the injection range of the refrigerant can be diffused while sequentially changing the position at which the injected refrigerant hits the back surface of the steel belt 1 on the outward path side.

In this case, the spray nozzle device 6
The rotary pipe joint 6a of FIG.
And mounting screws 63. Fitting body 61
Is provided with a main body piece 61c having a regular polygonal shape such as a regular hexagon in which a screw 61a is engraved on the outer peripheral surface so as to be connectable by screwing with the branch pipe 7a and which can be attached with a tool such as a spanner. At the same time, a cylindrical body 61b having a smaller diameter than the main body piece 61c is integrally formed on the top of the main body piece 61c, and the inside of the cylindrical body 61b is formed from the main body piece 61c so as to communicate with each other. A plurality of holes 61h are formed in the circumferential surface of the cylindrical body 61b at different positions so that the refrigerant flows out in the circumferential direction from the inside of the cylindrical body 61b.

A rotating body 62 is fitted around the outer periphery of the cylindrical body 61b of the pipe joint body 61, and is rotatable with a flanged mounting screw 63 screwed to the end of the cylindrical body 61b. Try to assemble it. The rotating body 62 is provided with a cylindrical through hole 62a and a swiveling tube through hole 62b such that the cylindrical body 61b and the swirling tube 6b are orthogonal to each other. In this case, a packing 64 made of a synthetic resin such as an abrasion-resistant fluororesin or ultra-high-density polyethylene having a small frictional resistance is provided at a contact portion between the two so that the rotating body 62 rotates smoothly with respect to the pipe joint body 61. Alternatively, in addition to the packing 64 and the ball bearing (not shown), the O-ring 60 is provided in addition to the packing 64 so that the refrigerant does not leak from the gap between the pipe joint body 61 and the rotating body 62. 61b
And the rotating body 62.

The revolving tube 6b is a pipe formed to be thicker than the outer diameter of the cylindrical body 61b. A flat ring-shaped bulged piece 69 is integrally formed on the outer periphery near both ends thereof.
A hole 68 through which the tubular body 61b of the pipe joint body 61 penetrates is formed at an intermediate position of the swirl pipe 6b or at a predetermined position between the flange pieces 69, 69 shifted from the intermediate position in accordance with the state of injection of the refrigerant. The swivel tube 6b penetrates through the rotating body 62 and the cylindrical body 61b penetrates through the hole 68, whereby the rotary body 62 and the swivel tube 6b are integrated with the cylindrical body 61b as a support shaft. Rotate. The plurality of holes 61h formed in the peripheral surface of the cylindrical body 61b are all opened in the swirl pipe 6b, the pipe joint body 61 and the swirl pipe 6b communicate with each other, and the refrigerant flows from the swirl pipe 6b. It is supplied to the joint body 61.

The spray nozzle 6c has a nozzle mounting body 65 fitted and fixed to the end of the swirl pipe 6b, a fixing tool 66,
The spray nozzle body 67 is constituted. The nozzle attachment body 65 is formed with a male screw on the outer periphery of one end and fitted to the end of the revolving tube 6b to form a cap nut shape on a mounting cylindrical screw piece 65a protruding from the box-shaped main body. Fixture 66
Into the main body, and a female screw 6
5c is engraved to communicate with the inside 65b of the nozzle mounting body 65, and the spray nozzle body 67 is screwed to the female screw 65c. In this case, as shown in FIG.
When the O-ring 60 is interposed between the mounting member 9 and the tip of the mounting cylindrical screw 65a of the nozzle mounting body 65, and the fixing tool 66 is screwed into the mounting cylindrical screw 65a, the flange 69 is connected to the fixing tool 66 and the pipe. The O-ring 60 is interposed and fixed between the threaded screws 65a.

The mounting angle α of the spray nozzle body 67 between the axis of the spray nozzle body 67 screwed into the female screw 65c of the nozzle mounting body 65 and the axis of the swirl pipe 6b is shown in FIG.
In addition to the setting of 90 ° as in the embodiment shown in FIG. 5, for example, as shown in a modified example shown in FIG.
Any angle other than 0 ° can be set. In this case, by setting the attachment angle α of the spray nozzle body 67 to be smaller than 90 degrees, the injection range of the refrigerant can be reduced. On the other hand, by setting it to be larger than 90 degrees, the injection range of the refrigerant can be increased. can do. Then, a plurality of types of nozzle attachment bodies 65 having different attachment angles α of the spray nozzle body 67 are prepared, and by appropriately selecting and using them, the entire surface in the width direction of the back surface of the steel belt 1 on the outward path side is provided. Adjustment for uniformly injecting the refrigerant can be easily performed, and the cooling efficiency can be further improved.

The spray nozzle body 67 has a swirl pipe 6b
It is preferable to use a flat spray nozzle or an off-center flat spray nozzle so that the coolant can be sprayed substantially uniformly at the center and the end of the steel belt 1 by swirling the spray nozzle 6c through the nozzle. . The spray nozzle body 67 is provided with a screw cylinder 67a having a thread cut on the outer peripheral surface thereof, and the screw cylinder 67a is screwed into the female screw 65c of the nozzle mounting body 65, and a refrigerant passage 67b is formed in the screw cylinder 67a. The spray nozzle body 67 is provided with a slit 67c at the tip thereof. The refrigerant injected from the slit 67c is shown in FIG.
As shown in FIG.

As shown in FIG. 3, the spray nozzle device 6 is constructed by attaching the spray nozzles 6c, 6c to both ends of the rotary pipe joint 6a via the swivel tube 6b. 1 and can be mounted to be inclined toward the center of the back surface on the outward path side.
In this case, the mounting angle β can be set according to the width of the steel belt 1, the size of the spray nozzle device 6, etc., but the refrigerant is injected toward the center of the back side of the steel belt 1 on the outward path side. The angle is set so that it can be prevented from being scattered to the outside of the steel belt 1, whereby the refrigerant is uniformly injected over the entire widthwise rear surface of the steel belt 1 on the outward path side. Thus, the cooling efficiency can be further improved.

The spray nozzle main body 67 attached to both sides of the tip of the swirl pipe 6b which is mounted in such an inclined manner is a spray nozzle main body formed by the axis of the spray nozzle main body 67 and the axis of the swirl pipe 6b. The mounting angle α of the spray nozzle body 67 on both sides can be set to the same, for example, 90 ° as in the embodiment shown in FIGS. It is also possible to make the spray nozzle body 67 different.

In the modification shown in FIG. 6, in addition to setting the mounting angle α of the spray nozzle main body 67 to be different between the spray nozzle main bodies 67 on both sides, the injection amount of the refrigerant is also controlled by the spray nozzle main bodies 67 on both sides. FIG. 6 in which the attachment angle α of the spray nozzle body 67 is set to be larger than 90 degrees, and a diagram in which the attachment angle α of the spray nozzle body 67 is set to 90 degrees in FIG. 6, the ratio of the injection amount of the refrigerant of the right spray nozzle body 67 can be set to a ratio of 1: 2 to 7, whereby the steel belt 1
The cooling efficiency can be further improved by injecting the refrigerant uniformly over the entire surface in the width direction of the back surface on the outward path side.

Further, the swirl pipe 6 of the spray nozzle device 6
b can be set to be different between the spray nozzle devices 6 adjacent to each other in the length direction of the steel belt 1.

Also, regardless of the size of the mounting angle α of the spray nozzle body 67 of the spray nozzle device 6 and the mounting angle β of the swirling pipe 6b, the swirling pipe is generated by the reaction force of the refrigerant injected from the spray nozzles 6c. As shown in FIG. 4, the spray nozzle body 67 is attached to the vertical axis at an attachment angle γ in the swiveling direction of the swivel pipe 6 b so that the swivel 6 b can smoothly swivel about the rotary joint 6 a. . The size of the mounting angle γ can be adjusted, so that the turning speed of the turning pipe 6b can also be adjusted.

In the above embodiment, as shown in FIG. 3, since the width of the steel belt 1 is wide, two spray nozzle devices 6 are provided in the width direction of the steel belt 1.
Although it is arranged in two rows, the present invention is not limited to this. For example, when the width of the steel belt 1 is narrow, the spray nozzle device 6 is If the steel belt 1 is arranged in a single row at the center in the width direction, or if the width of the steel belt 1 is large, the spray nozzle device 6 may be provided in three pieces in the width direction of the steel belt 1. As described above, three or more rows can be arranged. The configuration of the modification shown in FIG. 8 is the same as that of the above-described embodiment except that the swirl pipe 6b of the spray nozzle device 6 is attached substantially parallel to the back surface of the steel belt 1 on the outward path side.

[0029]

According to the spray nozzle device of the steel belt type cooler of the present invention, the swirling pipe is swirled by the jet reaction force of the refrigerant jetted from the spray nozzle at the back position on the outward path side of the belt. Thereby, while sequentially changing the position at which the refrigerant injected from the spray nozzles hits the back surface on the outward path side of the belt, the injection range of the refrigerant can be diffused, thereby reducing the number of spray nozzles. Along with this, the risk of clogging of the spray nozzle is reduced, and the coolant jetted from the spray nozzle is directly applied to the back side on the outward side of the belt to increase the contact efficiency between the coolant and the belt, thereby cooling. Efficiency can be improved. Thereby, the steel belt type cooler can be continuously operated in a stable state, and the work of cooling and solidifying the object to be cooled can be efficiently performed. The quality of the product can be stabilized.

Further, by mounting the swirl tube at an angle toward the center of the back of the belt on the outward path, the refrigerant is injected toward the center of the back of the belt on the outward path, and the refrigerant is cooled by the belt. Spattering to the outside can be prevented, and the cooling efficiency can be further improved.

Further, by installing the spray nozzles on both sides of the tip of the swirling tube at different mounting angles, it is easy to adjust the spray of the refrigerant uniformly over the entire widthwise rear surface of the belt on the outward path side. The cooling efficiency can be further improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway cross-sectional view showing an embodiment of a spray nozzle device of a steel belt type cooler of the present invention.

2A is a front view and FIG. 2B is a plan view.

FIG. 3 is a side view of a steel belt type cooler to which the spray nozzle device is applied.

4A and 4B show a state in which a refrigerant is being injected, wherein FIG. 4A is a plan view, FIG. 4B is a front view, and FIG. 4C is a side view of a main part.

FIG. 5 is a cross-sectional view of a nozzle mounting body in which a mounting angle of a spray nozzle main body is changed.

FIG. 6 is a front view of a spray nozzle device in which a mounting angle of a spray nozzle main body is changed.

FIG. 7 is a schematic front view of a steel belt type cooler to which the spray nozzle device of the present invention is applied.

FIG. 8 is a side view showing a modified example of the steel belt type cooler to which the spray nozzle device of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel belt 2, 3 Roller 4 Drive device 5 Spray receiver 6 Spray nozzle device 6a Rotary pipe joint 6b Swivel tube 6c Spray nozzle 7 Supply tube

Claims (3)

[Claims] 1. A spray nozzle device for a belt-type cooler, wherein a spray nozzle for injecting a refrigerant is disposed on a back surface of an endless belt that is driven in circulation, on a forward path side. A rotary pipe joint attached to a supply pipe of the refrigerant piped at the position, a swivel pipe rotatably mounted on the rotary pipe joint, and a tip mounted on the swivel pipe for injecting the refrigerant and discharging the refrigerant. A spray nozzle device for a belt-type cooler, comprising: a spray nozzle configured to swivel a swirling tube by force. 2. The spray nozzle device for a belt-type cooler according to claim 1, wherein the swirl tube is attached to be inclined toward a center of a back surface of the belt on the outward path side. 3. The spray nozzle device for a belt-type cooler according to claim 1, wherein the spray nozzles are mounted on both sides of a tip portion of the swirling pipe at different mounting angles.