A cooling water ring

Abstract

A cooling water ring includes an outer ring, an inner ring, a water inlet pipe, a cooling structure and a heat dissipation structure. The outer ring and the inner ring are combined to form an annular water trough, and holes for membrane bubbles to pass through are provided on the outer ring and the inner ring. The water inlet pipe is connected to the annular water trough. The cooling structure is arranged in the annular water trough and surrounds the outer side of the inner ring, and its two ends are respectively connected to the heat dissipation structure. The present invention finally realizes the cooling function of the membrane bubble through the cooperation between various parts. Compared with the prior art, since the cooling structure is arranged inside the water ring, the path of the pipeline is shorter, the energy loss is less, and the overall response speed and cooling cycle speed of the water ring are faster; on the other hand, the cooling structure can directly cool the inner ring while cooling the water, so that the membrane bubble is cooled by the inner ring for a second time after being cooled by water, thereby ensuring the cooling effect.

Description

Technical Field

[0001] The invention relates to a cooling water ring and belongs to the field of cooling equipment. Background Art

[0002] Plastic film is a common plastic product. It can be produced by calendering, extrusion, blow molding and other process methods. Blown film is to melt the plastic raw materials through an extruder to squeeze them into thin tubes, and then blow them up with compressed air while they are hot. After cooling and shaping, the film products are obtained. Nowadays, the processing and production of plastic films are generally completed by film blowing machines. As an important component of film blowing machines, water rings are mainly responsible for cooling and shaping the blown film bubbles. At present, the traditional water rings used in film blowing machines on the market are generally divided into a chiller and a water ring body for the convenience of assembly and disassembly. The cooling structure in the chiller cools the water and transports it to the water ring body, thereby cooling the film bubbles. However, this structure makes the production of pipelines more complicated and prone to leakage risks. In addition, the overall path is longer, the energy loss is larger, and the reaction speed is slower. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a cooling water loop with low energy loss and fast cooling cycle speed.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a cooling water ring, including an outer ring, an inner ring, a water inlet pipe, a cooling structure and a heat dissipation structure, the outer ring and the inner ring are combined to form an annular water trough, and the outer ring and the inner ring are provided with holes for membrane bubbles to pass through, the water inlet pipe is connected to the annular water trough, the cooling structure is arranged in the annular water trough and surrounds the outer side of the inner ring, and its two ends are respectively connected to the heat dissipation structure, after water flows into the interior of the annular water trough from the water inlet pipe, it will absorb heat and cool down through the cooling structure, as the water inlet amount continues to increase, the water level will gradually rise, and finally flow out from the holes in the inner ring, and cool the membrane bubble.

[0005] Preferably, the annular water tank is a U-shaped annular water tank.

[0006] Preferably, the inner ring is provided with a water leakage gap.

[0007] Preferably, the cooling structure includes a cooling tube, a heat sink, a refrigerant inlet end and a refrigerant outlet end, the heat sink is arranged between the outer ring and the inner ring, the cooling tube is arranged in an annular water groove through the heat sink and surrounds the outside of the inner ring, one end of the cooling tube is connected to the refrigerant inlet end, and the other end is connected to the refrigerant outlet end, and the refrigerant inlet end and the refrigerant outlet end are respectively connected to the heat dissipation structure.

[0008] Preferably, the number of surrounding layers of the cooling pipe is greater than or equal to 1.

[0009] Preferably, the number of winding layers of the cooling tube in the upper part of the inner ring is greater than the number of winding layers of the cooling tube in the lower part of the inner ring.

[0010] Preferably, the cooling tube is a spiral cooling tube, and the number is 1, one end of which is connected to the refrigerant inlet end, and the other end is connected to the refrigerant outlet end.

[0011] Preferably, the cooling tube is an annular cooling tube, and the number is not less than 1, one end of which is connected to the refrigerant inlet end, and the other end is connected to the refrigerant outlet end.

[0012] Preferably, the heat dissipation structure includes a vapor-liquid separator, a compressor, a radiator, a liquid storage tank and a dryer, and the vapor-liquid separator, the compressor, the radiator, the liquid storage tank and the dryer are connected in sequence, and one end of the cooling structure is connected to the dryer, and the other end is connected to the vapor-liquid separator.

[0013] Preferably, it also includes an overflow pipe connected to the U-shaped annular water tank, and the overflow pipe is located higher than the inner circle.

[0014] Preferably, a water tank is further included, and the water inlet pipe and the overflow pipe are respectively connected to the water tank, so as to achieve the effect of water circulation.

[0015] Preferably, flow valves are provided on the water inlet pipe and the overflow pipe.

[0016] Preferably, a heat-insulating layer is provided on the outer side of the outer ring.

[0017] The present invention realizes the cooling function of the membrane bubble through the coordination between various parts. Compared with the prior art, since the cooling structure is arranged inside the water ring, the pipeline path is shorter, the energy loss is less, and the overall response speed and cooling cycle speed of the water ring are faster; on the other hand, the cooling structure can directly cool the inner ring while cooling the water, so that the membrane bubble is cooled for the second time by the inner ring after being cooled by the water, thereby ensuring the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of the interior of a U-shaped annular water tank according to the first embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the heat dissipation structure.

[0020] Figure 3 It is a schematic diagram of the state of the membrane bubble in the water ring.

[0021] Figure 4 It is a schematic cross-sectional view of the interior of a U-shaped annular water tank according to a second embodiment of the present invention.

[0022] Figure 5It is a schematic cross-sectional diagram of the interior of a U-shaped annular water tank according to the third embodiment of the present invention.

[0023] Figure 6 yes Figure 5 Assembly diagram of .

[0024] Figure 7 It is a connection diagram of the annular cooling pipe and the refrigerant inlet end and the refrigerant outlet end.

[0025] Figure 8 yes Figure 7 Top view of the .

[0026] Fig. 9 It is a schematic diagram of the combination of annular cooling tube and heat sink.

[0027] Fig.10 This is a schematic diagram of the water flow.

[0028] Fig.11 It is a schematic cross-sectional view of the interior of a U-shaped annular water tank according to a fourth embodiment of the present invention.

[0029] In the figure, 1-outer ring; 2-inner ring; 3-water inlet pipe; 4-overflow pipe; 5-leakage gap; 6-insulation layer; 7-spiral cooling pipe; 8-heat sink; 9-refrigerant inlet end; 10-refrigerant outlet end; 11-gas-liquid separator; 12-compressor; 13-radiator; 14-liquid storage tank; 15-dryer; 16-annular cooling pipe; 17-membrane bubble. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Figure 1-Figure 3 A first embodiment of the present invention is shown; Figure 1-Figure 3As shown: a cooling water ring, including an outer ring 1, an inner ring 2, a water inlet pipe 3, an overflow pipe 4, a cooling structure and a heat dissipation structure; the inner ring 2 is provided with a water leakage gap 5, the outer side of the outer ring 1 is provided with a heat preservation layer 6, the outer ring 1 and the inner ring 2 are combined to form a U-shaped annular water trough, and the outer ring 1 and the inner ring 2 are provided with holes for film bubbles 17 to pass through (the film bubbles 17 pass through the holes and are pulled from top to bottom by the traction mechanism to complete the film pulling work. The traction mechanism is other components of the film blowing machine and belongs to the prior art, which will not be described in detail in this article), the water inlet pipe 3 and the overflow pipe 4 are respectively connected to the U-shaped annular water trough, and the overflow pipe 4 is located higher than the inner ring 2 (when the water inflow is too large, the excess water can be discharged through the overflow pipe 4), the water inlet pipe 3 and the overflow pipe 4 are connected to the U-shaped annular water trough. The water pipes 4 are each provided with a flow valve (which can be used to control the flow rate of water, which belongs to the prior art and will not be elaborated in this article). The cooling structure is arranged in the U-shaped annular water tank and surrounds the outer side of the inner ring 2, and its two ends are respectively connected to the heat dissipation structure. After the water flows into the interior of the U-shaped annular water tank from the water inlet pipe 3, it will absorb heat and cool down through the cooling structure. As the water inlet amount continues to increase, the water level will gradually rise and eventually overflow into the inner ring (the leakage gap can make the cooled water overflow into the inner ring more conveniently), forming a water seal and cooling the membrane bubble 17. Under the action of gravity, the water will continue to slide down, thereby lubricating the membrane bubble 17 (it can prevent friction between the membrane bubble 17 and the inner ring 2, causing damage to the membrane bubble 17). The cooling structure includes a spiral cooling tube 7, a heat sink 8, a refrigerant inlet end 9 and a refrigerant outlet end 10. The heat sink 8 is arranged between the outer ring 1 and the inner ring 2. The spiral cooling tube 7 is arranged in a U-shaped annular water tank through the heat sink 8 and surrounds the outer side of the inner ring 2, and the number of surrounding layers is 1 (the number of surrounding layers depends on the specific situation and can be adjusted according to the cooling efficiency). One end of the spiral cooling tube 7 is connected to the refrigerant inlet end 9, and the other end is connected to the refrigerant outlet end 10, and the refrigerant inlet end 9 and the refrigerant outlet end 10 are respectively connected to the heat dissipation structure. The heat dissipation structure includes a vapor-liquid separator 11, a compressor 12, a radiator 13, a liquid storage tank 14 and a dryer 15. The vapor-liquid separator 11, the compressor 12, the radiator 13, the liquid storage tank 14 and the dryer 15 are connected in sequence, and the refrigerant inlet end 9 is connected to the dryer 15, and the refrigerant outlet end 10 is connected to the vapor-liquid separator 11 (the heat dissipation structure is a prior art and will not be described in detail herein). It also includes a water tank, to which an inlet pipe 3 and an overflow pipe 4 are respectively connected (the water tank belongs to the prior art and is not drawn in the figure). When the water inflow is large, excess water can flow back into the water tank through the overflow pipe 4 and be transported to the U-shaped annular water tank again by the inlet pipe 3, thereby realizing the water recycling function.

[0032] Figure 4The second embodiment of the present invention is shown; compared with the first embodiment, the difference is that the number of winding layers of the spiral cooling tube 7 in the upper half of the inner ring 2 is 2, and the number of winding layers in the lower half of the inner ring 2 is 1; since the membrane bubble 17 moves from top to bottom, the temperature of the part that has just entered the inner ring 2 is higher (this part is about to be cooled), and the temperature of the part that has entered the inner ring 2 is lower (this part has been cooled), so the upper half of the water ring needs to absorb more heat than the lower half. Therefore, the number of winding layers of the spiral cooling tube 7 in the upper half of the inner ring 2 needs to be more than the number of winding layers in the lower half of the inner ring 2, so that the temperature of the upper half of the water ring can be lower than that of the lower half, thereby better cooling the part of the membrane bubble 17 that has just entered the water ring.

[0033] Figure 5-Figure 10 The third embodiment of the present invention is shown; compared with the first embodiment, the difference is that the cooling structure is a plurality of annular cooling tubes 16, heat sinks 8, a refrigerant inlet end 9 and a refrigerant outlet end 10, the heat sink 8 is arranged between the outer ring 1 and the inner ring 2, the annular cooling tube 16 is arranged in a U-shaped annular water tank through the heat sink 8, and is surrounded on the outer side of the inner ring 2, and the number of surrounding layers is 3 (the number of surrounding layers depends on the specific situation and can be adjusted according to the cooling efficiency), one end of the annular cooling tube 16 is connected to the refrigerant inlet end 9, and the other end is connected to the refrigerant outlet end 10, and the refrigerant inlet end 9 and the refrigerant outlet end 10 are respectively connected to the heat dissipation structure.

[0034] Fig.11 The fourth embodiment of the present invention is shown; compared with the third embodiment, the difference is that the number of surrounding layers of the annular cooling tube 16 in the upper half of the inner ring 2 is 3, and the number of surrounding layers in the lower half of the inner ring 2 is 1; since the membrane bubble 17 moves from top to bottom, the temperature of the part that has just entered the inner ring 2 is higher (this part is about to be cooled), and the temperature of the part that has entered the inner ring 2 is lower (this part has been cooled), so the upper half of the water ring needs to absorb more heat than the lower half. Therefore, the number of surrounding layers of the annular cooling tube 16 in the upper half of the inner ring 2 needs to be more than the number of surrounding layers in the lower half of the inner ring 2, so that the temperature of the upper half of the water ring can be lower than that of the lower half, thereby better cooling the part of the membrane bubble 17 that has just entered the water ring.

[0035] The working process of the present invention is roughly as follows: when the membrane bubble is about to be pulled downward by the pulling mechanism, water is first delivered to the U-shaped annular water tank of the water ring through the water inlet pipe, and then cooled by the cooling pipe (the flow direction of the water is as follows Fig.10As shown in the figure, since the cooling pipe is arranged in the water ring, when it cools the water, it will also directly cool the inner wall of the water ring. As the bubble gradually moves downward, the cooled water will overflow from the leaking gap of the inner ring, thereby forming a water seal and cooling the bubble. At the same time, the water also serves to lubricate the bubble, thereby preventing the bubble from being damaged by friction with the inner ring during the movement. After the bubble is cooled by the water, the inner ring will cool it down for the second time, thereby ensuring the cooling effect of the bubble.

[0036] The principle of the heat dissipation structure is as follows: the refrigerant is vaporized by the compression action of the compressor, and takes away the heat in the cooling pipe. After vapor-liquid separation, it enters the radiator, releases heat and liquefies, then enters the liquid storage tank, and re-enters the cooling pipe after passing through the dryer, repeating the cycle and continuously transferring the heat inside the water ring (the heat dissipation structure and its related components are all prior art and will not be elaborated in this article).

[0037] It should be noted that the terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field. The words "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Unless otherwise specified, the words "inside", "outside", "upper", "lower" and the like are only for the convenience of explanation and are not limited to a position or a spatial orientation.

[0038] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A cooling water ring, characterized in that: It includes an outer ring, an inner ring, a water inlet pipe, a cooling structure and a heat dissipation structure. The outer ring and the inner ring are combined to form a U-shaped annular water trough, and the outer ring and the inner ring are provided with holes for the membrane bubble to pass through. The water inlet pipe is connected to the U-shaped annular water trough. The cooling structure is arranged in the U-shaped annular water trough and surrounds the outer side of the inner ring. Its two ends are respectively connected to the heat dissipation structure. After water flows into the interior of the U-shaped annular water trough from the water inlet pipe, it will absorb heat and cool down through the cooling structure. As the water inlet amount continues to increase, the water level will gradually rise, and finally flow out from the holes in the inner ring to cool the membrane bubble; the inner ring is provided with a water leakage gap; the cooling The structure includes a cooling tube, a heat sink, a refrigerant inlet end and a refrigerant outlet end. The heat sink is arranged between the outer ring and the inner ring. The cooling tube is arranged in an annular water tank through the heat sink and surrounds the outer side of the inner ring. One end of the cooling tube is connected to the refrigerant inlet end, and the other end is connected to the refrigerant outlet end, and the refrigerant inlet end and the refrigerant outlet end are respectively connected to the heat dissipation structure; the heat dissipation structure includes a vapor-liquid separator, a compressor, a radiator, a liquid storage tank and a dryer. The vapor-liquid separator, the compressor, the radiator, the liquid storage tank and the dryer are connected in sequence, and one end of the cooling structure is connected to the dryer, and the other end is connected to the vapor-liquid separator.

2. A cooling water ring according to claim 1, characterized in that: The number of surrounding layers of the cooling pipe is greater than or equal to one.

3. A cooling water ring as claimed in claim 2, characterized in that: The number of surrounding layers of the cooling pipe in the upper part of the inner circle is greater than the number of surrounding layers of the cooling pipe in the lower part of the inner circle.

4. A cooling water ring according to claim 2 or 3, characterized in that: The cooling tube is a spiral cooling tube, and the number is 1, one end of which is connected to the refrigerant inlet end, and the other end is connected to the refrigerant outlet end.

5. A cooling water ring according to claim 2 or 3, characterized in that: The cooling pipe is an annular cooling pipe, and the number is not less than 1, one end of which is connected to the refrigerant inlet end, and the other end is connected to the refrigerant outlet end.

6. A cooling water ring according to claim 1, characterized in that: It also includes an overflow pipe connected to the U-shaped annular water tank, and the position of the overflow pipe is higher than the inner circle.

7. A cooling water ring according to claim 6, characterized in that: It also includes a heat-insulating layer, which is arranged on the outside of the outer ring.

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