Cooling water lubricating device for PE pipe sizing

Abstract

The utility model provides a cooling water lubricating device for sizing a PE (Poly Ethylene) pipe, which belongs to the technical field of pipe production and comprises a water injection ring, a rotating ring, a plurality of water distribution plates and a driving piece, a water injection cavity is formed between the inner walls of the water injection ring and the rotating ring and the outer wall of the sizing sleeve, a water injection pipe and a water outlet pipe are arranged on the water injection ring, the water injection pipe and the water outlet pipe are communicated with the water injection cavity, the rotating ring can axially rotate relative to the water injection ring, and the diameter of the rotating ring is larger than that of the water injection ring in the axial direction of the rotating ring. The plurality of water distribution plates are annularly and uniformly arranged on the inner wall of the rotating ring, and the driving piece is connected with the rotating ring. According to the device, the water injection pipe is arranged on the water injection ring, the water injection pipe is tubular, an atomizing head is not arranged at the end of the water injection pipe, impurities and water flow with small sizes can quickly flow out of the water injection pipe, and the water injection pipe is prevented from being blocked by the impurities and calcium and magnesium substances in water.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe production, and particularly relates to a cooling water lubrication device for sizing PE pipes. Background Art

[0002] PE pipes have good hygienic properties, are non-toxic, and have no scaling layer. When transporting water in pipes, secondary pollution of water quality can be avoided. Standard PE pipes have high impact resistance, good toughness, and high impact resistance, which will not cause the pipe to rupture.

[0003] In the existing PE pipe production process, the PE pipe blank extruded by the extruder must be cooled and solidified before it can be truly formed into a pipe. The cooling and shaping of the pipe is first passed through the sizing sleeve of the extruder, and the first cooling is carried out through the water sealing ring that cooperates with the sizing sleeve, and then enters the cooling pool behind the sizing sleeve or the cooling system to achieve complete cooling and shaping. When the sizing sleeve and the water sealing ring are cooled for the first time, water is discharged through the water sealing ring, so that a layer of water film is formed between the outer surface of the PE pipe and the sizing sleeve. The water film has the function of cooling the pipe. At the same time, the water film can lubricate the sizing sleeve and the pipe, reduce the friction between the sizing sleeve and the PE pipe, and make the outer surface of the PE pipe smoother.

[0004] However, during the water discharge process of the water sealing ring, the water sealing ring is connected to the outer wall of the sizing sleeve, and a spray chamber is formed between the outer wall of the water sealing ring and the inner wall of the sizing sleeve. The water sealing ring is provided with a water inlet pipe with a small diameter, and an atomizing head is provided in the spray chamber, and the atomizing head is connected with the water inlet pipe. Since the cooling water used by the water sealing ring is circulating water, although the circulating water is filtered water, it is inevitable that small impurities will enter the water inlet pipe and the atomizing head of the water sealing ring, and due to the poor water quality and the high calcium and magnesium content in the water, the water inlet of the water sealing ring will be blocked. As the water pipe and atomizer head are used for a longer time, the water inlet pipe and the atomizer head of the water sealing ring are blocked on a large scale. However, it is difficult for the staff to find that the water inlet pipe and the atomizer head are blocked, resulting in the loss of the water film covering and lubrication function of the water sealing ring, and the problem of uneven water film coverage will occur. The temperature of some parts of the sizing sleeve wall is higher and that of some parts is lower. During the traction process of the PE pipe, the pipe wall with higher temperature will be stretched and deformed, resulting in a thickness deviation of the pipe wall, which reduces the tensile strength and impact resistance of the PE pipe. Utility Model Content

[0005] Based on this, the utility model provides a cooling water lubrication device for sizing PE pipes to solve the technical problems existing in the prior art, that is, impurities with smaller volumes enter the water inlet pipe and atomizing head of the water sealing ring, and due to the poor water quality and high calcium and magnesium content in the water, the water inlet pipe and atomizing head of the water sealing ring are blocked. As the use time increases, the water inlet pipe and atomizing head of the water sealing ring are blocked over a large area, causing the water sealing ring to lose the covering water film and the cooling sizing sleeve.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A cooling water lubrication device for sizing a PE pipe is used to cool and lubricate the PE pipe in a sizing sleeve, comprising a water injection ring, a rotating ring, a plurality of water distribution plates and a driving member. The water injection ring and the rotating ring are coaxially sleeved on the sizing sleeve, and a water injection cavity is formed between the inner walls of the water injection ring and the rotating ring and the outer wall of the sizing sleeve. A water injection pipe and a water outlet pipe are provided on the water injection ring, and the water injection pipe and the water outlet pipe are connected to the water injection cavity. The rotating ring can rotate axially relative to the water injection ring. Along the axial direction of the rotating ring, a plurality of water distribution plates are evenly arranged in an annular shape on the inner wall of the rotating ring, and the driving member is connected to the rotating ring.

[0008] Preferably, the driving member is a driving plate, which is arranged in the water injection cavity and connected to the water distribution plate, and the plate surface of the driving plate is arranged corresponding to the water outlet end of the water injection pipe.

[0009] Preferably, along the axial direction of the water injection ring, the water injection pipe is inclined, and the water outlet end of the water injection pipe is inclined toward one side of the water distribution plate, and along the radial direction of the water injection ring, the water injection pipe is inclined, and the water outlet end of the water injection pipe is inclined toward one side of the plate surface of the driving plate.

[0010] Preferably, the driving plate is a curved plate, and the inner curved surface of the curved plate is arranged corresponding to the water outlet end of the water injection pipe.

[0011] Preferably, the rotating ring includes a rotating bearing and a sealing ring, the rotating bearing is coaxially arranged with the sizing sleeve, one side of the rotating bearing is sealingly connected with the water injection ring, the water distribution plate is arranged on the inner ring of the rotating bearing, the sealing ring is sleeved on the sizing sleeve and is located on the side away from the water injection ring, and the sealing ring is sealingly connected with the other side of the rotating bearing.

[0012] Preferably, the water distribution plate comprises a connecting strip and a brush, the connecting strip is detachably arranged on the inner ring of the rotating bearing, the brush is connected to the connecting strip, and one end of the brush is arranged close to the sizing sleeve.

[0013] Preferably, a plurality of brushes are provided and are arranged in sequence on the connecting strip.

[0014] Preferably, a plurality of water injection pipes are provided.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The device is provided with a water injection pipe on the water injection ring. The water injection pipe is tubular and has no atomizing head at the end. Impurities and water with smaller volume will quickly flow out of the water injection pipe to avoid impurities and calcium and magnesium substances in the water blocking the water injection pipe. At the same time, under the driving action of the driving member, the rotating ring and a plurality of water distribution plates are driven to move. The water distribution plates will stir the cooling water in the water injection cavity and push the water flow to rotate in a circle around the outer wall of the sizing sleeve, so that the cooling water evenly covers the outer wall of the sizing sleeve, evenly cools the pipe in the sizing sleeve, forms a water film, lubricates the outer wall of the pipe, avoids tensile deformation of the PE pipe, and improves the pipe forming rate of the PE pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An axonometric view of a cooling water lubrication device for sizing PE pipes.

[0018] Figure 2 A top view of a cooling water lubrication device for sizing PE pipes.

[0019] Figure 3 This is the front view of a cooling water lubrication device for sizing PE pipes.

[0020] Figure 4 for Figure 3 AA section view.

[0021] Figure 5 This is an axonometric view of a cooling water lubrication device (without sealing cover) for sizing PE pipes.

[0022] Figure 6 A partial sectional axonometric view of a cooling water lubrication device (without sealing cover) for sizing PE pipes.

[0023] Figure 7 for Figure 6 Partial enlarged image.

[0024] In the figure: a water injection ring 10, a water injection chamber 110, a water injection pipe 120, a water outlet pipe 130, a sealing cover 140, a rotating ring 20, a rotating bearing 210, a sealing ring 220, a water distribution plate 30, a connecting strip 310, a brush 320, a driving member 40, a sizing sleeve 50, and a PE pipe 60. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0026] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Please see Figures 1 to 7 A cooling water lubrication device for sizing a PE pipe is used to cool and lubricate a PE pipe 60 in a sizing sleeve 50, comprising a water injection ring 10, a rotating ring 20, a plurality of water distribution plates 30 and a driving member 40. The water injection ring 10 and the rotating ring 20 are coaxially sleeved on the sizing sleeve 50, and a water injection cavity 110 is formed between the inner walls of the water injection ring 10 and the rotating ring 20 and the outer wall of the sizing sleeve 50. A water injection pipe 120 and a water outlet pipe 130 are provided on the water injection ring 10, and the water injection pipe 120 and the water outlet pipe 130 are connected to the water injection cavity 110. The rotating ring 20 can rotate axially relative to the water injection ring 10. Along the axial direction of the rotating ring 20, a plurality of water distribution plates 30 are evenly arranged in an annular shape on the inner wall of the rotating ring 20, and the driving member 40 is connected to the rotating ring 20.

[0028] The sizing sleeve 50 is a sizing sleeve 50 used in an existing extruder. A through groove is provided on the sizing sleeve 50 , and water can flow from the outer wall of the sizing sleeve 50 along the through groove into the inner wall of the sizing sleeve 50 . The PE pipe 60 is located inside the sizing sleeve 50 .

[0029] The specific usage process is:

[0030] The existing extruder is provided with a cooling system, in which a water tank is provided, and a water pump is provided in the water tank. The water pump draws cooling water from the water tank, and the water flow has a preset water pressure. The water flow is connected with the water injection pipe 120 through a water pipe, and the water with a certain water pressure flows into the water injection chamber 110. Only a small amount of cooling water will remain at the bottom of the water injection chamber 110, and the water injection chamber 110 will not be completely filled with water; the driving member 40 drives the rotating ring 20 to rotate, and the rotating ring 20 drives the water distribution plate 30 to rotate in the water injection chamber 110. Since the water distribution plate 30 is uniformly arranged in a ring shape along the axial direction of the rotating ring 20, one end of the water distribution plate 30 is arranged close to the sizing sleeve 50, and a gap is reserved to avoid direct contact between the water distribution plate 30 and the sizing sleeve 50, so as to prevent the water distribution plate 30 from being worn during the rotation of the water distribution plate 30. During the rotation of the water distribution plate 30, a small amount of water flow at the bottom of the water injection chamber 110 will be stirred to rotate, so as to avoid the phenomenon that the bottom of the water injection chamber 110 contains cooling water while the upper end surface of the sizing sleeve 50 contains less cooling water, so as to avoid temperature difference in the pipe in the sizing sleeve 50. At the same time, it will also drive the water flow flowing out of the water injection pipe 120 to move, and promote the water flow to rotate in a circle around the outer wall of the sizing sleeve 50, so that the cooling water evenly covers the outer wall of the sizing sleeve 50, and flows into the through groove provided on the sizing sleeve 50, so as to evenly cool the pipe in the sizing sleeve 50, and form a water film to lubricate the outer wall of the pipe. The cooling water after cooling the water injection chamber 110 flows out through the water outlet pipe 130, and a pump body can be used to connect with the water outlet pipe 130 to extract the cooling water in the water injection chamber 110 and flow into the water tank, so as to form a cooling water circulation.

[0031] The driving member 40 does not drive the rotating ring 20 to rotate quickly, but drives the rotating ring 20 to rotate at a slower speed to prevent the cooling water from being subjected to centrifugal force and completely adhering to the inner wall of the rotating ring 20, resulting in less water flow on the outer wall of the sizing sleeve 50 and reduced cooling effect.

[0032] For the driving member 40 to drive the rotating ring 20 to rotate, it can be selected that the rotating ring 20 is driven by a motor, or a water flow adaptive drive, or other driving methods are used to drive the rotating ring 20 to rotate. The motor drive can be configured to be that a first gear is provided on the outer surface of the rotating ring 20, the first gear is fixedly connected to the rotating ring 20, and when a second gear is used, the second gear is meshed with the first gear, and the motor is connected to the second gear, and the rotating ring 20 is driven to rotate by the rotation of the motor.

[0033] The effect achieved:

[0034] The device is provided with a water injection pipe 120 on the water injection ring 10. The water injection pipe 120 is tubular and has no atomizing head at the end. Impurities and water with smaller volumes will quickly flow out of the water injection pipe 120 to prevent impurities and calcium and magnesium substances in the water from clogging the water injection pipe 120. At the same time, under the driving action of the driving member 40, the rotating ring 20 and a plurality of water distribution plates 30 are driven to move. The water distribution plates 30 will stir the cooling water in the water injection cavity 110 and push the water flow to rotate in a circle around the outer wall of the sizing sleeve 50, so that the cooling water evenly covers the outer wall of the sizing sleeve 50, evenly cools the pipe in the sizing sleeve 50, forms a water film, lubricates the outer wall of the pipe, prevents the PE pipe 60 from tensile deformation, and improves the pipe forming rate of the PE pipe 60.

[0035] As a preference, see Figures 5 to 7 , the driving member 40 is a driving plate, the driving plate is arranged in the water injection cavity 110, and is connected to the water distribution plate 30, and the plate surface of the driving plate is arranged corresponding to the water outlet end of the water injection pipe 120. When the rotating ring 20 is driven to rotate by a motor, it is necessary to add a motor, a mounting frame and a transmission component to drive the rotating ring 20 to rotate, which not only increases the installation cost, but also occupies a large space. Therefore, the water flow with a certain flow rate sprayed out by the water injection pipe 120 is used to drive the plurality of water distribution plates 30 to rotate with the kinetic energy provided by the cooling water itself in the flowing state, that is, a driving plate is arranged, the driving plate is fixedly connected or detachably connected to the water distribution plate 30, the driving plate is arranged on a side close to the water injection ring 10, and the water injection pipe 120 arranged on the water injection ring 10 partially extends into the water injection cavity 110, the plate surface of the driving plate is arranged corresponding to the water outlet end of the water injection pipe 120, and the water flow sprayed out by the water injection pipe 120 impacts on the plate surface of the driving plate, which will give The driving plate has a driving force, and since the driving plate is connected to the water distribution plate 30, it will push the water distribution plate 30 and the driving plate to rotate. During the rotation of the driving plate, since the water injection pipe 120 continues to inject water, it will continuously push different driving plates to rotate, so that the cooling water flowing out of the water injection pipe 120 can provide cooling and water lubrication effects, and at the same time, it can also provide corresponding kinetic energy for the water distribution plate 30, drive the water distribution plate 30 to rotate, stir the cooling water in the water injection chamber 110 to move, and evenly cover the outer surface of the sizing sleeve 50 with a layer of cooling water, so as to form a water film and cool the pipe at the same time.

[0036] Preferably, in order to allow more cooling water flowing out of the water injection pipe 120 to enter one side of the water distribution plate 30, and also to facilitate the rotation of the water distribution plate 30 to drive the cooling water to evenly cover the outer wall of the sizing sleeve 50, the water injection pipe 120 is inclined along the axial direction of the water injection ring 10, and the water outlet end of the water injection pipe 120 is inclined toward one side of the water distribution plate 30.

[0037] Preferably, in general, the setting direction of the driving plate is flush with the water distribution plate 30, or has a certain angle with the water distribution plate 30, so that more cooling water flowing out of the water injection pipe 120 falls on the driving plate, on the one hand, it provides greater kinetic energy for the driving plate, and on the other hand, it prevents the cooling water from falling directly on the sizing sleeve 50, and flows into the sizing sleeve 50 from the through groove of the sizing sleeve 50, so that the temperature of the sizing sleeve 50 and the pipe in this part is lower, resulting in a temperature difference. Then: along the radial direction of the water injection ring 10, the water injection pipe 120 is tilted, and the water outlet end of the water injection pipe 120 is tilted toward the plate surface of the driving plate. Make as much cooling water flowing out of the water injection pipe 120 fall on the driving plate as possible, and drive the driving plate to rotate by the cooling water.

[0038] Preferably, the driving plate is a curved plate, and the inner curved surface of the curved plate is arranged corresponding to the water outlet end of the water injection pipe 120. When the curved plate is arranged, a large amount of cooling water flowing out of the water injection pipe 120 will be received on the inner curved surface of the curved plate, providing greater kinetic energy for the driving plate, and at the same time, preventing the cooling water from directly falling on the outer wall of the sizing sleeve 50.

[0039] As a preference, see Figure 4 and Figure 7 The rotating ring 20 includes a rotating bearing 210 and a sealing ring 220. The rotating bearing 210 is coaxially arranged with the sizing sleeve 50. One side of the rotating bearing 210 is sealed and connected with the water injection ring 10. The water distribution plate 30 is arranged on the inner ring of the rotating bearing 210. The sealing ring 220 is sleeved on the sizing sleeve 50 and is located on the side away from the water injection ring 10. The sealing ring 220 is sealed and connected with the other side of the rotating bearing 210. Specifically, the rotating bearing 210 includes an outer ring, rolling elements, an inner ring, etc. The outer ring of the rotating bearing 210 is fixedly connected to the outer wall of the water injection ring 10 by welding, and the outer ring of the rotating bearing 210 is also fixedly connected to the sealing ring 220 by welding, but the inner ring of the rotating bearing 210 can rotate freely and does not contact the side close to the sealing ring 220. The rolling elements of the rotating bearing 210 are in a sealed state. The water distribution plate 30 is arranged on the inner ring of the rotating bearing 210, and the water distribution plate 30 is connected to the driving plate. During the rotation of the driving plate, the inner ring of the rotating bearing 210 will be driven to rotate; the sealing ring 220 mainly seals the sizing sleeve 50 to prevent the cooling water in the water injection cavity 110 from flowing out from one side of the sealing ring 220.

[0040] As a preference, see Figure 1 and Figure 3A sealing cover 140 is detachably provided on one side of the water injection ring 10. The sealing cover 140 is provided on a side away from the sealing ring 220 to seal the water injection cavity 110 on one side of the water injection ring 10. A fastening screw is provided on the sealing cover 140. The water injection ring 10 can be opened to check the water injection cavity 110.

[0041] As a further preference, see Figure 7 The water distribution plate 30 includes a connecting strip 310 and a brush 320. The connecting strip 310 is detachably arranged on the inner ring of the rotating bearing 210. The brush 320 is connected to the connecting strip 310. One end of the brush 320 is arranged close to the sizing sleeve 50. Even if a flat plate-shaped water distribution plate 30 is used to promote the movement of cooling water, part of the cooling water still flows in a columnar shape on the flat plate, and the cooling water is unevenly distributed on the outer wall of the sizing sleeve 50. In order to reduce the columnar flow of cooling water, the brush 320 is used to disperse the cooling water so that the cooling water is evenly distributed in the brush 320. During the rotation of the brush 320, the cooling water can drip along the bristles in the brush 320 and evenly cover the outer wall of the sizing sleeve 50.

[0042] Preferably, a plurality of brushes 320 are provided, and are arranged in sequence on the connecting strip 310. The plurality of brushes 320 can be provided to stir the cooling water so as to cover the outer wall of the sizing sleeve 50 more evenly.

[0043] Preferably, a plurality of water injection pipes 120 are provided to further push the driving plate to rotate.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cooling water lubrication device for sizing PE pipes, used for cooling and lubricating the PE pipes in the sizing sleeve, characterized in that: It includes a water injection ring, a rotating ring, a plurality of water distribution plates and a driving member. The water injection ring and the rotating ring are coaxially sleeved on the sizing sleeve. A water injection cavity is formed between the inner walls of the water injection ring and the rotating ring and the outer wall of the sizing sleeve. A water injection pipe and a water outlet pipe are arranged on the water injection ring. The water injection pipe and the water outlet pipe are connected with the water injection cavity. The rotating ring can rotate axially relative to the water injection ring. Along the axial direction of the rotating ring, a plurality of water distribution plates are evenly arranged in a ring shape on the inner wall of the rotating ring. The driving member is connected to the rotating ring.

2. A cooling water lubrication device for sizing PE pipes as claimed in claim 1, characterized in that: The driving member is a driving plate, which is arranged in the water injection cavity and connected to the water distribution plate. The plate surface of the driving plate is arranged corresponding to the water outlet end of the water injection pipe.

3. A cooling water lubrication device for sizing PE pipes as claimed in claim 2, characterized in that: Along the axial direction of the water injection ring, the water injection pipe is inclined, and the water outlet end of the water injection pipe is inclined toward one side of the water distribution plate. Along the radial direction of the water injection ring, the water injection pipe is inclined, and the water outlet end of the water injection pipe is inclined toward one side of the plate surface of the driving plate.

4. A cooling water lubrication device for sizing PE pipes as claimed in claim 2, characterized in that: The driving plate is a curved plate, and the inner curved surface of the curved plate is arranged corresponding to the water outlet end of the water injection pipe.

5. A cooling water lubrication device for sizing PE pipes as claimed in claim 1, characterized in that: The rotating ring includes a rotating bearing and a sealing ring. The rotating bearing is coaxially arranged with the sizing sleeve. One side of the rotating bearing is sealingly connected with the water injection ring. The water distribution plate is arranged on the inner ring of the rotating bearing. The sealing ring is sleeved on the sizing sleeve and is located on the side away from the water injection ring. The sealing ring is sealingly connected with the other side of the rotating bearing.

6. A cooling water lubrication device for sizing PE pipes as claimed in claim 5, characterized in that: The water distribution plate includes a connecting strip and a brush. The connecting strip is detachably arranged on the inner ring of the rotating bearing. The brush is connected to the connecting strip. One end of the brush is arranged close to the sizing sleeve.

7. A cooling water lubrication device for sizing PE pipes as claimed in claim 6, characterized in that: A plurality of brushes are provided and are arranged in sequence on the connecting strip.

8. A cooling water lubrication device for sizing PE pipes as claimed in claim 1, characterized in that: A plurality of water injection pipes are provided.

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