A large-caliber MPVE prefabricated sealing ring pipe cooling device and method

Abstract

The present invention provides a large-diameter MPVE prefabricated sealing ring pipe cooling device and method, relating to the technical field of pipe production equipment, the cooling device includes a plug-in prefabricated sealing ring bellows and a cooling water jacket, and also includes a fixed sleeve, the fixed sleeve is bolted to the end of the cooling water jacket; a water inlet pipe, the water inlet pipe is bolted to the fixed sleeve and is connected to a core shaft; a water spraying device, the water spraying device is rotatably connected around the core shaft, and is used to quickly cool the straight section of the prefabricated sealing ring bellows after rotating water spraying; and a method of utilizing the large-diameter MPVE prefabricated sealing ring pipe cooling device; the present invention is suitable for forming cooling in the production process of large-diameter MPVE prefabricated sealing ring pipes, and can make the inner wall or straight section of the pipe be rotationally sprayed and cooled by the water spraying device, avoiding the problem of uneven inner wall or large ellipticity of the straight section, improving the sealing performance and pressure bearing capacity of the pipeline, and also solving the problem of sewage leakage in the sewage pipeline, making the pipeline system safer and more reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe production equipment, and in particular to a large-diameter MPVE prefabricated sealing ring pipe cooling device and method. Background Art

[0002] At present, large-diameter corrugated pipes adopt dual-machine feeding, which can produce one-piece molded pipes of DN1400mm and above. It can not only improve production efficiency, but also solve the equipment problem of insufficient main machine feeding. However, the larger the pipe diameter, the higher the ring stiffness, the poor cooling of the inner wall, the pipe becomes oval or the inside is uneven, and wavy lines are generated, which in turn affects the flow of water and easily accumulates dirt or silt. At the same time, for the production of prefabricated sealing ring corrugated pipe plastic pipes, its straight section will produce certain deformation when leaving the cooling water jacket due to the large diameter or thick wall thickness and the incomplete cooling. In particular, for pipes with a diameter greater than DN800 or an inner diameter greater than DN600, as the pipe diameter increases or the ring stiffness increases, the out-of-roundness of the prefabricated sealing ring socket becomes greater. If the ovality of the socket is too large, it will be difficult to insert it into the socket and installation will be difficult. Even if it is inserted, a gap will easily form between the inner diameter of the prefabricated sealing ring in the socket and the outer diameter of the socket, resulting in sewage leakage and reduced pressure bearing capacity of the pipeline, polluting the environment and causing waste. In addition, the inner wall of large-diameter conventional corrugated pipes is thick, or when high ring stiffness is produced, the inner wall is not cooled well and it is easy to become uneven and wavy. Summary of the Invention

[0003] The purpose of the present invention is to provide a large-diameter MPVE prefabricated sealing ring pipe cooling device and method, which solves the problem that when large-diameter corrugated pipes are produced by dual-machine feeding, the inner wall of the pipe or the straight section of the prefabricated sealing ring solid wall pipe is not cooled well, resulting in wavy lines or ellipses.

[0004] The embodiments of the present invention are implemented through the following technical solutions: a large-diameter MPVE prefabricated sealing ring pipe cooling device, comprising a plug-in prefabricated sealing ring corrugated pipe and a cooling water jacket, including a fixed sleeve, the fixed sleeve and the cooling water jacket end bolted connection; a water inlet pipe, the water inlet pipe and the fixed sleeve bolted connection, and connected to the core shaft; a water spray device, the water spray device is rotatably connected around the core shaft, and is used to quickly cool the straight section of the prefabricated sealing ring corrugated pipe after rotating water spraying;

[0005] Furthermore, the water spraying device includes a bracket, a nozzle, a refraction arm and a connecting piece, the connecting piece is connected to the core shaft, the nozzle is arranged on the refraction arm, and the refraction arm is connected to the bracket through a rotating shaft;

[0006] Further, a plurality of nozzles are distributed in an annularly spaced array along the refraction arm;

[0007] Furthermore, the water spraying device includes a spiral water jacket and a spray jacket, and the spiral water jacket is connected to rotate around the core shaft;

[0008] Furthermore, it also includes a spring device, the spring device includes a fixedly connected spring and a spring fixing disk, the spring is connected to the fixing sleeve, and the spring fixing disk is connected to the core shaft;

[0009] Furthermore, the springs are spaced apart in an array along the circumference of the core shaft;

[0010] Furthermore, the core shaft is connected to the water inlet pipe through a linear bearing for axial sliding in the water inlet pipe;

[0011] A method for cooling a large-caliber MPVE prefabricated sealing ring pipe, the method comprising:

[0012] Step S1: In the production process of large-diameter double-wall corrugated pipes and prefabricated sealing ring corrugated pipes with dual feeding machines, a large-diameter MPVE prefabricated sealing ring pipe cooling device is set at the outlet of the water jacket when the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe leave the cooling water jacket;

[0013] Step S2: introducing pressurized water flow into the water spray device through the water inlet pipe of the large-diameter MPVE prefabricated sealing ring pipe cooling device to form a rotating spraying state of the water spray device and then quickly cool the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe;

[0014] Step S3: According to the inner wall thickness and the cooling condition of the straight section of the prefabricated sealing ring corrugated pipe, adjust the water flow pressure of the water inlet pipe of the large-diameter MPVE prefabricated sealing ring pipe cooling device to adjust the telescopic distance of the spring device of the large-diameter MPVE prefabricated sealing ring pipe cooling device, so that the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe are completely and evenly sprayed with water to be cooled and formed. At this point, the cooling of the large-diameter MPVE prefabricated sealing ring pipe is completed.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: by arranging a fixed sleeve, a water inlet pipe and a water spray device at the cooling water jacket, when large-diameter corrugated pipes are produced by dual-machine feeding, the inner wall or the straight section of the pipe can be rotationally sprayed and cooled by the water spray device, thereby avoiding the problem of unevenness of the inner wall of the large-diameter double-wall corrugated pipe or large ellipticity of the prefabricated sealing ring double-wall corrugated pipe socket due to untimely cooling, so that after the prefabricated sealing ring double-wall corrugated pipe socket is socketed, the socket and the prefabricated sealing ring in the socket form a tight combination, the pipeline sealing shape is good, and the installation is quick and convenient; at the same time, the pressure bearing capacity of the prefabricated sealing ring pressure-bearing pipe is improved, and the problem of sewage leakage in the sewage pipe is solved, making the pipeline system safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a large-diameter MPVE prefabricated sealing ring pipe cooling device provided in Example 1 of the present invention;

[0018] Figure 2 Schematic diagram of a forming module of a large-diameter MPVE prefabricated sealing ring pipe cooling device provided in Example 1 of the present invention;

[0019] Figure 3 The large-diameter MPVE prefabricated sealing ring pipe cooling device provided in Example 1 of the present invention Figure 1 A magnified view of middle A;

[0020] Figure 4 A schematic structural diagram of a large-diameter MPVE prefabricated sealing ring pipe cooling device provided in Example 2 of the present invention;

[0021] Figure 5 The large-diameter MPVE prefabricated sealing ring pipe cooling device provided in Example 2 of the present invention Figure 4 Enlarged view of middle B;

[0022] Icons: 1-prefabricated sealing ring bellows, 2-cooling water jacket, 3-fixing sleeve, 4-water inlet pipe, 5-core shaft, 6-water spray device, 7-spring, 8-spring fixing plate, 9-sleeve, 10-spiral water jacket, 11-spray jacket, 12-molding module, 61-bracket, 62-nozzle, 63-refracting arm, 64-connecting part. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0025] Example 1

[0026] This embodiment provides a large-diameter MPVE prefabricated sealing ring pipe cooling device, such as Figure 1 and 3 As shown, it includes a prefabricated sealing ring bellows 1 and a cooling water jacket 2, as shown in FIG. Figure 2 As shown, the prefabricated sealing ring bellows 1 is formed by a forming module 12, including a fixed sleeve 3, which is bolted to the end of the cooling water jacket 2; for example, the fixed sleeve 3 and the cooling water jacket 2 are respectively provided with through holes distributed along the circumference, and the fixed sleeve 3 and the cooling water jacket 2 are bolted together by corresponding through holes; a water inlet pipe 4, which is bolted to the fixed sleeve 3, for example, an annular connecting plate is provided at the end of the water inlet pipe 4, and the annular connecting plate is provided with through holes arrayed along the circumference, and the fixed sleeve 3 is provided with a groove, and the bottom of the groove is provided with a first through hole corresponding to the diameter of the water inlet pipe 4. A hole is provided, and a second through hole is provided corresponding to the through hole of the annular connecting plate, and the annular connecting plate is bolted to the fixed sleeve 3 through the second through hole; the water inlet pipe 4 is slidably connected to the core shaft 5, for example, the core shaft 5 is connected to the water inlet pipe 4 through a linear bearing, and the end of the water inlet pipe 4 is fixedly connected to the linear bearing, the linear bearing is sleeved with the core shaft 5, and is plugged into the water inlet pipe 4, so that the core shaft 5 can slide axially in the water inlet pipe 4; a water spraying device 6, the water spraying device 6 is rotatably connected around the core shaft 5, and is used to quickly cool the straight section of the prefabricated sealing ring bellows 1 after rotating water spraying.

[0027] It is worth mentioning that by arranging a fixed sleeve 3, a water inlet pipe 4 and a water spray device 6 at the cooling water jacket 2, when large-diameter corrugated pipes are produced by dual-machine feeding, the inner wall or straight section of the pipe can be rotated and sprayed cooled by the water spray device 6, thereby avoiding the problem of unevenness of the inner wall of the large-diameter double-wall corrugated pipe or large ellipticity of the prefabricated sealing ring double-wall corrugated pipe socket due to untimely cooling. After the prefabricated sealing ring double-wall corrugated pipe socket is socketed, the socket and the prefabricated sealing ring in the socket form a tight combination, the pipeline sealing shape is good, and the installation is quick and convenient; at the same time, the pressure bearing capacity of the prefabricated sealing ring pressure-bearing pipe is improved, and the problem of sewage leakage in the sewage pipe is solved, making the pipeline system safer and more reliable.

[0028] Water spray device 6, such as Figure 3As shown, the water spray device 6 comprises a bracket 61, a nozzle 62, a refraction arm 63 and a connector 64, the connector 64 being connected to the core shaft 5. The nozzle 62 is provided on the refraction arm 63. A plurality of nozzles 62 are distributed in an annular array along the refraction arm 63, so that the sprayed water flow is larger and the sprayed water flow is more uniform, thereby improving the spray cooling effect. The refraction arm 63 is connected to the bracket 61 via a rotating shaft. The working principle of the water spray device 6 is as follows: after the pressurized water flow is ejected from the nozzle 62, it is concentrated into a beam and sprayed upward onto a rotatable unidirectional refraction arm 63. The flow channel shape on the refraction arm 63 not only enables the water flow to be ejected at a spray elevation angle, but also enables the reaction force of the ejected water tongue to form a torque on the rotation axis, thereby causing the ejected water tongue to rotate rapidly with the refraction arm 63, achieving rotary spraying. The water spray device 6 can rotate and spray by its own water flow when the pressurized water flow is introduced, thereby improving the cooling effect. At the same time, since no additional driving device is required, the structure of the cooling device is simplified, making the cooling device adaptable to more installation environments and improving the versatility of the cooling device.

[0029] Spring devices, such as Figure 3 As shown, it includes a fixedly connected spring 7 and a spring fixing disk 8. The spring 7 is connected to the fixing sleeve 3. For example, the fixing sleeve 3 is provided with a plurality of protrusions corresponding to the spring 7, and the protrusions are fixedly connected to the spring 7. The plurality of springs 7 are connected by a connecting rod. The spring fixing disk 8 is fixedly connected to the spring 7 and is connected to the core shaft 5 through a ball bearing and a shaft sleeve 9. This allows the core shaft 5 to move axially together with the spring fixing disk 8. The springs 7 are distributed in an array along the circumference of the core shaft 5 at intervals, so that the spring 7 can be ejected and reset with uniform force, thereby improving the stability of the spring device. The working principle of the spring device is as follows: When pressurized water flow is introduced, the water flow generates axial pressure on the core shaft 5, pushing the device to overcome the tension of the spring 7 and move forward to perform rotary spraying; when no water flows, the elastic deformation characteristics of the spring 7 are utilized, and under the tension of the spring 7, the device automatically retracts and retracts into the cooling water jacket 2, avoiding affecting the pipe forming at the beginning of production; the cooling device can be recycled when production is in progress to avoid affecting the pipe forming, ensuring the cooling effect of the pipe while simplifying the recycling mechanism, making the cooling device structure as simple as possible, reducing production costs, and improving the convenience of using the cooling device.

[0030] Example 2

[0031] The large-diameter MPVE prefabricated sealing ring pipe cooling device provided in this embodiment is completely consistent with the main structure of the embodiment, such as Figure 4-5The difference is that the water spraying device 6 includes a spiral water jacket 10 and a spray coat 11, and the spiral water jacket 10 is connected to rotate around the core shaft 5; for example, the core shaft 5 is connected to the spiral water jacket 10 through a ball bearing, so that the spiral water jacket 10 can rotate relative to the core shaft 5; the working principle of the spiral water jacket 10: after water flows out of the inner hole of the core shaft 5, it enters the spiral groove of the spiral water jacket 10 and flushes on the damping boss of the spiral groove. The damping boss generates a component force, which pushes the spiral water jacket 10 to rotate along the core shaft 5, and the spray coat 11 is connected to the spiral water jacket 10, so that the water in the spiral water jacket 10 enters the end of the spray coat 11 and is sprayed out along the small holes, thereby realizing rotary spraying; by arranging the spiral water jacket 10 on the core shaft 5, when the pressurized water flow is passed into the rotating water jacket, rotary spraying can be realized by the internal water flow, which improves the cooling effect. At the same time, since there is no need to add a driving device, the structure of the cooling device is simplified, so that the cooling device can adapt to more installation environments, and the versatility of the cooling device is improved.

[0032] Example 3

[0033] This embodiment provides a method for cooling a device using a large-diameter MPVE prefabricated sealing ring pipe, the method comprising:

[0034] Step S1: In the production process of the large-diameter double-wall corrugated pipe and the prefabricated sealing ring corrugated pipe 1 plastic pipe with dual feeding, a large-diameter MPVE prefabricated sealing ring pipe cooling device is set at the outlet of the cooling water jacket 2 when the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe 1 leave the cooling water jacket 2; by setting the large-diameter MPVE prefabricated sealing ring pipe cooling device at the outlet of the cooling water jacket 2, targeted cooling can be performed on the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe 1, thereby avoiding the problem of unevenness of the inner wall of the large-diameter double-wall corrugated pipe or large ellipticity of the socket of the prefabricated sealing ring double-wall corrugated pipe due to untimely cooling, thereby improving the cooling efficiency and the efficiency of pipe production at the same time;

[0035] Step S2: A pressurized water flow is introduced into the water spray device 6 through the water inlet pipe 4 of the large-diameter MPVE prefabricated sealing ring pipe cooling device to form a rotating spraying state of the water spray device 6 and then quickly cool the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe 1; through the setting of the rotary spray, it can adapt to the annular structure of the pipe, and at the same time, the rotary spray can evenly spray the pressurized water flow on the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe 1, thereby improving the cooling effect.

[0036] Step S3: According to the cooling conditions of the inner wall thickness and the straight section of the prefabricated sealing ring corrugated tube 1, the water flow pressure of the water inlet pipe 4 of the large-diameter MPVE prefabricated sealing ring tube cooling device is adjusted to adjust the telescopic distance of the spring device of the large-diameter MPVE prefabricated sealing ring tube cooling device, so that the inner wall thickness and the straight section of the prefabricated sealing ring corrugated tube 1 are completely and evenly sprayed with water to be cooled and formed. At this point, the cooling of the large-diameter MPVE prefabricated sealing ring tube is completed; by adjusting the water flow pressure, the speed and position of the rotating spraying can be adjusted in conjunction with the spring device to ensure the effect of the spraying. At the same time, the cooling device is recovered in time after the spraying is completed to avoid affecting the forming of the pipe. The entire process is completely rotated and contracted by the structure of the cooling device itself, without the need to add an external drive device, which simplifies the cooling operation steps and improves the cooling efficiency of the inner wall thickness and the straight section of the prefabricated sealing ring corrugated tube 1.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for utilizing a large-diameter MPVE prefabricated sealing ring pipe cooling device, the large-diameter MPVE prefabricated sealing ring pipe cooling device comprising a plugged prefabricated sealing ring bellows (1) and a cooling water jacket (2), comprising: A fixing sleeve (3), the fixing sleeve (3) being connected to the end of the cooling water jacket (2) by bolts; A water inlet pipe (4), the water inlet pipe (4) is bolted to the fixing sleeve (3) and is connected to a core shaft (5); A water spray device (6), the water spray device (6) is rotatably connected around the core shaft (5) and is used to quickly cool the straight section of the prefabricated sealing ring bellows (1) after rotating water spraying; The method comprises: Step S1: In the production process of the large-diameter double-wall corrugated pipe and the prefabricated sealing ring corrugated pipe (1) plastic pipe with dual feeding, when the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe (1) leave the cooling water jacket (2), the large-diameter MPVE prefabricated sealing ring pipe cooling device is set at the outlet of the water jacket; Step S2: introducing pressurized water flow into the water spraying device (6) through the water inlet pipe (4) of the large-diameter MPVE prefabricated sealing ring pipe cooling device to form a rotating spraying state of the water spraying device (6) and then quickly cool the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe (1); Step S3: According to the cooling conditions of the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe (1), the water flow pressure of the water inlet pipe (4) of the large-diameter MPVE prefabricated sealing ring pipe cooling device is adjusted to adjust the telescopic distance of the spring device of the large-diameter MPVE prefabricated sealing ring pipe cooling device, so that the inner wall thickness and the straight section of the prefabricated sealing ring corrugated pipe (1) are completely and evenly sprayed with water to be cooled and formed. At this point, the cooling of the large-diameter MPVE prefabricated sealing ring pipe is completed.

2. The method for cooling a large-diameter MPVE prefabricated sealing ring pipe as claimed in claim 1, characterized in that: The water spraying device (6) comprises a bracket (61), a nozzle (62), a refraction arm (63) and a connecting piece (64); the connecting piece (64) is connected to the core shaft (5); the nozzle (62) is arranged on the refraction arm (63); and the refraction arm (63) is connected to the bracket (61) via a rotating shaft.

3. The method for cooling a large-diameter MPVE prefabricated sealing ring pipe as claimed in claim 2, characterized in that: The plurality of nozzles (62) are distributed in an annular array along the refraction arm (63).

4. The method for cooling a large-diameter MPVE prefabricated sealing ring pipe according to claim 1, characterized in that: The water spraying device (6) comprises a spiral water jacket (10) and a spray jacket (11), and the spiral water jacket (10) is rotatably connected around the core shaft (5).

5. The method for cooling a large-diameter MPVE prefabricated sealing ring pipe according to claim 3 or 4, characterized in that: It also includes a spring device, which includes a fixedly connected spring (7) and a spring fixing disk (8), wherein the spring (7) is connected to the fixing sleeve (3), and the spring fixing disk (8) is connected to the core shaft (5).

6. The method for cooling a large-diameter MPVE prefabricated sealing ring pipe as claimed in claim 5, characterized in that: The springs (7) are distributed in an array along the circumference of the core shaft (5).

7. The method for cooling a large-diameter MPVE prefabricated sealing ring pipe according to claim 6, characterized in that: The core shaft (5) is connected to the water inlet pipe (4) via a linear bearing and is used for axial sliding in the water inlet pipe (4).

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