Corrosion-resistant toughened PVC (polyvinyl chloride) pipe as well as preparation device and preparation process thereof

Abstract

The invention relates to a corrosion-resistant toughened PVC (polyvinyl chloride) pipe as well as a preparation device and a preparation process thereof. The device comprises an extruder, a cooling water tank and a cooling cylinder, and a water storage mechanism and a spraying mechanism are arranged on the cooling cylinder; the water storage mechanism comprises a water storage sleeve, and a water storage cavity is formed between the water storage sleeve and the outer wall of the to-be-cooled pipe; the rotating seat is coaxially and rotatably mounted in the cooling cylinder, and the water storage sleeve is mounted on the rotating seat; the water storage sponge is annular and is mounted at one end, far away from the spraying mechanism, of the water storage sleeve; the driving assembly is used for driving the rotating seat to rotate on the cooling cylinder; the spraying mechanism comprises a spraying pipe communicated with an external high-pressure water source; and the multiple nozzles are distributed on the spraying pipe at equal intervals, and the spraying directions of the nozzles point to the water storage cavity. Cooling water is sprayed into the water storage cavity through the nozzles and forms the cooling water jacket along with rotation of the water storage jacket, the contact duration of the cooling water and the pipe is prolonged, the cooling effect of the cooling water on the pipe to be cooled is improved, and the use amount of the cooling water is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of special pipe production, and in particular to a corrosion-resistant toughened PVC pipe and a preparation device and a preparation process thereof. Background Art

[0002] Corrosion-resistant toughened PVC pipe is a specially modified PVC pipe. It retains the original corrosion resistance of PVC pipe and improves the impact strength and elongation at break by adding toughening additives. For example, by adding modified graphene oxide to acrylic rubber, the toughness of PVC pipe can be significantly improved. It is mainly used for chemical transportation in the chemical industry, water supply and transportation in the water conservancy and fire protection industries, etc., and the general pipe diameter is 200mm to 600mm or even larger. Because additives are added to the raw materials of corrosion-resistant toughened PVC pipe, the physical properties of this PVC pipe are relatively stable. In actual production, some recycled materials can be added for mixed production, which can not only reduce production costs, but also help reduce environmental pollution.

[0003] In the related technology, the Chinese patent with application number CN202211165455.X proposes a corrosion-resistant toughened PVC pipe and its preparation process, which belongs to the technical field of PVC pipes and includes the following raw materials: polyvinyl chloride resin, acrylic rubber, light calcium carbonate, stabilizer, stearic acid, modified graphene oxide, PE wax, titanium dioxide. The invention enhances the performance of PVC pipes by using acrylic rubber and modified graphene oxide. Acrylic rubber itself can effectively toughen PVC. The long flexible polymer chain on the surface of modified graphene oxide can interact with the PVC molecular chain to improve the slippage, and can also produce a synergistic effect with acrylic rubber to effectively improve the toughness of PVC. The halogenamine groups and lamellar graphene oxide contained in the pipe material form a dense physical barrier layer, which gives the pipe good corrosion resistance.

[0004] When preparing this kind of PVC pipe, the molten mixture is generally extruded through an extruder, and then cooled in a water bath to shape it. However, when the diameter of the pipe is large, the buoyancy of the pipe in the cooling water tank increases, and the shaped pipe may bend, affecting the product quality. If a spray head is used for circumferential cooling of the pipe, the contact time between the sprayed cooling water and the outer wall of the pipe is short, not only the cooling efficiency is low, but also the demand for cooling water is extremely large. Summary of the invention

[0005] In order to improve the problems of large water consumption and low cooling efficiency during cooling and shaping of existing extruded pipes, the present application provides a corrosion-resistant toughened PVC pipe and a preparation device and a preparation process thereof.

[0006] The first aspect of the present application provides a corrosion-resistant toughened PVC pipe preparation device that adopts the following technical solution: A corrosion-resistant toughened PVC pipe preparation device comprises an extruder and a cooling water tank, wherein a cooling cylinder is provided on the cooling water tank, and a water storage mechanism and a spray mechanism are sequentially provided on the cooling cylinder along the discharge direction of the extruder; The water storage mechanism comprises: A water storage jacket is coaxially arranged with the cooling cylinder, wherein the hollow portion is for the pipe to be cooled to pass through, and a water storage cavity is formed between the water storage jacket and the outer wall of the pipe to be cooled; A rotating seat is coaxially rotatably mounted in the cooling cylinder, and the water storage jacket is mounted on the rotating seat; A water storage sponge is annular and installed at one end of the water storage jacket away from the spray mechanism, and the inner diameter of the water storage sponge is not larger than the outer diameter of the pipe to be cooled; and A driving assembly, used for driving the rotating seat to rotate on the cooling cylinder; The spray mechanism comprises: A spray pipe connected to an external high-pressure water source; A plurality of nozzles are provided and are evenly spaced on the spray pipe. The nozzles are connected to the spray pipe, and the spraying direction of the nozzles points to the water storage chamber.

[0007] Furthermore, a transition cone sleeve is connected between the water storage sleeve and the rotating seat, and the inner wall of the transition cone sleeve is expanded along the discharge direction of the extruder.

[0008] Furthermore, a plurality of water stirring structures arranged along the axial direction are fixedly connected to the inner wall of the water storage jacket, and the height of the water stirring structures along the radial direction of the water storage jacket is smaller than the thickness of the annular water storage cavity.

[0009] Furthermore, the water stirring structure is configured as a water stirring bar and a plurality of water stirring protrusions, or a combination of both.

[0010] Furthermore, the water stirring structure includes a plurality of water stirring protrusions close to one side of the water storage sponge and a plurality of water stirring strips away from one side of the water storage sponge, and the water stirring strips are arranged in a spiral shape; When the plurality of water stirring bars rotate along with the water storage jacket, they are used to drive the cooling water in the water storage chamber to surge toward the direction close to the water storage sponge.

[0011] Furthermore, a plurality of water-permeable holes are formed through the circumference of one end of the water storage sleeve close to the water storage sponge.

[0012] Furthermore, a plurality of bimetallic strips corresponding to the plurality of water-permeable holes are fixedly connected to the outer wall of the water storage jacket, one end of the bimetallic strips is fixedly connected to the outer wall of the water storage jacket, and the other end is attached to the outer wall of the water storage jacket and covers the corresponding water-permeable holes; The bimetallic strip bends in a direction away from the water storage jacket after contacting cooling water having a temperature greater than a set temperature that seeps out of the water permeable hole.

[0013] Furthermore, a sleeve for embedding the water storage sponge is fixedly connected to the inner wall of the water storage sleeve.

[0014] The second aspect of the present application provides a method for preparing a corrosion-resistant toughened PVC pipe using the following technical solution: A method for preparing a corrosion-resistant toughened PVC pipe is based on the above-mentioned device for preparing a corrosion-resistant toughened PVC pipe, and comprises the following steps: S1. After mixing the new material according to the ratio, it is mixed with the crushed recycled material to form a mixture, and the mixture is put into the extruder for extrusion; S2. The tube extruded by the extruder is pulled through the cooling cylinder and the tube to be cooled is kept coaxial with the cooling cylinder; S3. Start the spray mechanism and the water storage mechanism, so that the cooling water sprayed from the plurality of nozzles is flushed into the water storage chamber, and a cooling water jacket is formed in the water storage chamber around the pipe to be cooled by rotating the water storage jacket; S4. As the pipe to be cooled is continuously output, the cooling water jacket in the water storage chamber continues to efficiently cool and shape the pipe to be cooled.

[0015] The third aspect of the present application provides a corrosion-resistant toughened PVC pipe adopting the following technical solution: A corrosion-resistant toughened PVC pipe is prepared based on the above-mentioned corrosion-resistant toughened PVC pipe preparation method. The new material comprises the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 10-12 parts of acrylic rubber, 25-28 parts of light calcium carbonate, 3.5-4.5 parts of stabilizer, 0.9-1 part of stearic acid, 1.6-2 parts of modified graphene oxide, 0.9-1.1 parts of PE wax, and 1.8-2.2 parts of titanium dioxide.

[0016] In summary, the beneficial technical effects of this application are: 1. When the driving component drives the rotating seat to rotate, the water storage jacket is driven to rotate at high speed. The cooling water sprayed at high speed by multiple nozzles enters the water storage chamber between the water storage jacket and the pipe to be cooled. When the water storage jacket rotates, it can stir the cooling water in the water storage chamber to a certain extent, so that the cooling water in the water storage chamber can follow the rotation as much as possible and form a cooling water jacket surrounding the outer periphery of the pipe to be cooled, which can significantly increase the contact time between the cooling water and the pipe to be cooled, thereby improving the cooling effect of the cooling water on the pipe to be cooled, thereby reducing the amount of cooling water, saving water resources and reducing production costs; 2. When the water storage jacket rotates at high speed, multiple water stirring bars and multiple water stirring protrusions rotate along with the water storage jacket. When the multiple water stirring bars rotate, on the one hand, they can drive the cooling water in the water storage chamber to rotate along to form a cooling water jacket and maintain the shape of the cooling water jacket; on the other hand, they can transport the cooling water sprayed by the nozzle at the port of the water storage jacket to the water storage sponge, forming a water flow in the opposite direction of the direction of travel of the pipe to be cooled, which can promote the cooling effect of the cooling water on the pipe to be cooled to a certain extent. At the same time, when the multiple water stirring protrusions rotate along with the water storage jacket, they will vigorously stir the cooling water transported by the multiple water stirring bars to form a strong cooling zone for the pipe to be cooled; 3. There is always a nozzle delivering new cooling water at the end of the water storage jacket away from the water storage sponge. Therefore, the water temperature of the cooling water jacket formed in the water storage chamber close to the water storage sponge is much higher than the water temperature at the end away from the water storage sponge, which can form a good cooling gradient to avoid sudden cooling of the pipe to be cooled and affect the molding quality; 4. Affected by the centrifugal force of the water storage jacket during rotation, the heated cooling water entering the deep part of the water storage chamber completes the cooling process, and most of it is discharged through the water permeable holes on the water storage jacket, thus forming a complete flow path of cooling water in the water storage chamber, so that low-temperature cooling water can flow continuously into the water storage chamber to cool the cooling pipes and then be discharged, which greatly improves the cooling efficiency of the cooling pipes. At the same time, the cooling water in the water storage chamber forms a cooling water jacket, which increases the contact time with the cooling pipes and reduces the amount of cooling water used; 5. With the help of the setting of the bimetallic strip, the water permeable hole can be opened from closed, and the opening size of the water permeable hole can be adjusted in real time. This adjustment is automatically adjusted based on the temperature of the heated cooling water near one end of the water storage sponge in the water storage chamber. When the water temperature is low, the heated cooling water can still cool the pipe to be cooled to a certain extent. When the water temperature rises to the set value, the bimetallic strip deforms, so that the water permeable hole opens, and the overheated cooling water can be discharged in time. The higher the water temperature, the greater the opening of the water permeable hole, and the higher the drainage efficiency of the overheated cooling water. Therefore, through this automatic dynamic adjustment, the cooling uniformity of the pipe to be cooled can be effectively ensured, and the cooling water that fluctuates between hot and cold can be prevented from affecting the cooling and forming quality of the pipe to be cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present application; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0018] Description of reference numerals: 1. Extruder; 2. Cooling water tank; 3. Cooling cylinder; 31. Drainage port; 4. Water storage sleeve; 41. Water storage sponge; 42. Water storage cavity; 43. Water permeable hole; 44. Bimetallic strip; 45. Card sleeve; 51. Rotating seat; 52. External gear ring; 53. Driving gear; 54. Driving motor; 55. Transition cone sleeve; 61. Spray pipe; 62. Nozzle; 71. Water stirring bar; 72. Water stirring protrusion. DETAILED DESCRIPTION

[0019] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0020] The present application embodiment discloses a corrosion-resistant toughened PVC pipe preparation device. Figure 1 and Figure 2 The extruder 1 includes an extruder 1 and a cooling water tank 2. A cooling cylinder 3 is provided on the cooling water tank 2. A water storage mechanism and a spray mechanism are provided on the cooling cylinder 3 in sequence along the discharge direction of the extruder 1. A water outlet 31 corresponding to the cooling water tank 2 is provided at the lower part of the cooling cylinder 3 for cooling water to circulate back.

[0021] Water storage institutions include: The water storage jacket 4 is coaxially arranged with the cooling cylinder 3, wherein the hollow portion thereof is for the pipe to be cooled to pass through, and a water storage cavity 42 is formed between the water storage jacket 4 and the outer wall of the pipe to be cooled, and the thickness of the annular water storage cavity 42 is not less than 20 mm; The rotating seat 51 is coaxially rotatably mounted in the cooling cylinder 3, and the water storage jacket 4 is coaxially mounted on the rotating seat 51; The water storage sponge 41 is annular and installed at one end of the water storage jacket 4 away from the spray mechanism, and the inner diameter of the water storage sponge 41 is not larger than the outer diameter of the pipe to be cooled; and The driving assembly is used to drive the rotating seat 51 to rotate on the cooling cylinder 3 with the central axis of the cooling cylinder 3 as the rotation axis.

[0022] The spray mechanism includes: The spray pipe 61 is connected to an external high-pressure water source and is specifically an annular shape coaxial with the cooling cylinder 3. The spray pipe 61 is installed on the inner wall of the cooling cylinder 3; The nozzles 62 are provided in plurality and are evenly spaced on the spray pipe 61. The nozzles 62 are connected to the spray pipe 61, and the spraying direction of the nozzles 62 points to the water storage chamber 42. To ensure that the water in the water storage chamber 42 is sufficient, the number of the nozzles 62 is not less than 8.

[0023] In this way, after the new material for preparing the corrosion-resistant toughened PVC pipe is mixed evenly according to the proportion, it is mixed with the recycled material crushed into powder to obtain a mixture, and the mixture is put into the extruder 1 for extrusion, and the extruded pipe is pulled to pass through the hollow part of the water storage jacket 4, and then the external high-pressure water source is transported to the spray pipe 61 and sprayed out at high speed through multiple nozzles 62. The cooling water sprayed by the nozzle 62 enters the water storage chamber 42 between the water storage jacket 4 and the pipe to be cooled. The water storage sponge 41 can seal the end of the water storage chamber 42 away from the nozzle 62 to a certain extent, so as to avoid the cooling water in the water storage chamber 42 from directly flowing out from the end in large quantities, which can increase the contact time between the cooling water and the pipe to be cooled to a certain extent, and improve the cooling efficiency.

[0024] At the same time, the driving component drives the rotating seat 51 to rotate, thereby driving the water storage jacket 4 to rotate at high speed. When rotating, the water storage jacket 4 can stir the cooling water in the water storage chamber 42 to a certain extent, so that the cooling water in the water storage chamber 42 can follow the rotation as much as possible and form a cooling water jacket surrounding the outer periphery of the pipe to be cooled, which can further significantly increase the contact time between the cooling water and the pipe to be cooled, thereby improving the cooling effect of the cooling water on the pipe to be cooled, thereby reducing the amount of cooling water used, saving water resources and reducing production costs.

[0025] Specifically, in order to further ensure the retention of the cooling water jacket in the water storage chamber 42 and the wrapping effect on the cooling pipe, refer to Figure 2 and Figure 3, a plurality of water-stirring structures arranged along the axial direction are fixedly connected to the inner wall of the water storage jacket 4, and the height of the water-stirring structure along the radial direction of the water storage jacket 4 is less than the thickness of the annular water storage chamber 42; the water-stirring structure is set to be a combination of one or two of a water-stirring strip 71 and a plurality of water-stirring protrusions 72, for example, only a water-stirring protrusion 72 is set on the inner wall of the water storage jacket 4, and the setting of a plurality of water-stirring protrusions 72 can promote the disordered disturbance of the cooling water in the water storage chamber 42, and to a certain extent drive the cooling water jacket to follow the rotation of the water storage jacket 4 and maintain a relatively complete thick-walled cylindrical shape, so as to ensure the cooling effect on the cooling pipe to be cooled; or, only a water-stirring strip 71 is set on the inner wall of the water storage jacket 4, and the water-stirring strip 71 can form a relatively strong stirring effect on the cooling water in the water storage chamber 42, so that the cooling water jacket follows the rotation of the water storage jacket 4 more obviously, which can greatly promote the shape maintenance of the cooling water jacket; or it is set to a combination of the two to take into account both the promotion of the disordered disturbance of the cooling water and the shape maintenance of the cooling water jacket.

[0026] In a specific embodiment, referring to Figure 2 and Figure 3 The water stirring structure includes a plurality of water stirring protrusions 72 close to the side of the water storage sponge 41 and a plurality of water stirring strips 71 away from the side of the water storage sponge 41. The water stirring protrusions 72 are in a hemispherical shape, a hemispherical shape, a water drop shape, a cone shape, etc.; the plurality of water stirring strips 71 are distributed in an evenly spaced circular array around the axis of the water storage sleeve 4, and the water stirring strips 71 are arranged in a spiral shape; The plurality of water stirring bars 71 are used to drive the cooling water in the water storage chamber 42 to surge toward the water storage sponge 41 when rotating along with the water storage jacket 4 .

[0027] Therefore, when the water storage jacket 4 rotates at high speed, the multiple water stirring bars 71 and the multiple water stirring protrusions 72 rotate with the water storage jacket 4. When the multiple water stirring bars 71 rotate, on the one hand, they can drive the cooling water in the water storage chamber 42 to rotate to form a cooling water jacket and maintain the shape of the cooling water jacket; on the other hand, the cooling water sprayed by the nozzle 62 at the port of the water storage jacket 4 can be transported to the water storage sponge 41 to form a water flow in the opposite direction of the moving direction of the pipe to be cooled, which can promote the cooling effect of the cooling water on the pipe to be cooled to a certain extent. At the same time, when the multiple water stirring protrusions 72 rotate with the water storage jacket 4, the cooling water transported by the multiple water stirring bars 71 is strongly stirred to form a strong cooling zone for the pipe to be cooled.

[0028] Among them, since there is always a nozzle 62 to deliver new cooling water at the end of the water storage jacket 4 away from the water storage sponge 41, the water temperature of the cooling water jacket formed in the water storage chamber 42 close to the water storage sponge 41 is much higher than the water temperature at the end away from the water storage sponge 41, which can form a good cooling gradient to avoid sudden cooling of the pipe to be cooled and affect the molding quality.

[0029] However, although the water storage sponge 41 can allow a portion of the heated cooling water to flow, the flow rate is small. The hotter heated cooling water is accumulated at the closed end of the water storage jacket 4 for a long time, which will affect the cooling effect on the pipe to be cooled.

[0030] For this purpose, refer to Figure 2 and Figure 3 A plurality of water-permeable holes 43 are formed on the circumferential side of one end of the water storage jacket 4 close to the water storage sponge 41. The full-load water permeable flow rate of the plurality of water-permeable holes 43 is less than the total injection flow rate of the plurality of nozzles 62. Specifically, the distribution area of ​​the plurality of water-stirring protrusions 72 along the axial direction of the water storage jacket 4 is greater than the distribution area of ​​the plurality of water-permeable holes 43 along the axial direction of the water storage jacket 4.

[0031] In this way, when the water storage jacket 4 rotates, the cooling water sprayed into the water storage chamber 42 by the nozzle 62 can be transported to the end opposite to the direction of travel of the pipe to be cooled with the help of multiple spirally arranged water stirring strips 71. This cooling water flow can achieve efficient cooling of the pipe to be cooled and heat it up. The heated cooling water is stirred by multiple water stirring protrusions 72 to perform the final stage of cooling on the pipe to be cooled; then, under the influence of the centrifugal force when the water storage jacket 4 rotates, this part of the heated cooling water completes the cooling process, and most of it passes through the water permeable holes 43 on the water storage jacket 4 and is discharged. In this way, a complete flow path of the cooling water in the water storage chamber 42 can be formed, so that the low-temperature cooling water can be continuously circulated into the water storage chamber 42 to cool the pipe to be cooled and then discharged, which greatly improves the cooling efficiency of the pipe to be cooled. At the same time, the cooling water in the water storage chamber 42 forms a cooling water jacket, which increases the contact time with the cooling pipe and reduces the amount of cooling water used.

[0032] In order to fully utilize the cooling effect of the cooling water, and to avoid the low-temperature cooling water that does not meet the discharge standard from being directly discharged from the water permeable hole 43 under the action of centrifugal force, Figure 2 and Figure 3 Furthermore, a plurality of bimetallic strips 44 corresponding to the plurality of water-permeable holes 43 are fixedly connected to the outer wall of the water storage jacket 4, one end of the bimetallic strip 44 is fixedly connected to the outer wall of the water storage jacket 4, and the other end is attached to the outer wall of the water storage jacket 4 and covers the corresponding water-permeable holes 43; the water-permeable holes 43 can be set as long holes set along the length direction of the bimetallic strip 44.

[0033] The bimetallic strip 44 bends in the direction away from the water storage jacket 4 after contacting the cooling water whose temperature is higher than the set temperature seeping out of the water permeable hole 43. Specifically, the bimetallic strip 44 can be composed of nickel-iron alloy and brass, and can produce obvious deformation between 40°C and 60°C. During installation, the brass side is placed against the water permeable hole 43, so that the heated cooling water contacts the brass first, causing the brass side of the bimetallic strip 44 to expand and deform more, thereby causing the bimetallic strip 44 to warp, thereby releasing the closure of the water permeable hole 43 and exposing more of the water permeable hole 43.

[0034] Therefore, by means of the setting of the bimetallic strip 44, the water-permeable hole 43 can be changed from closed to open, and the opening size of the water-permeable hole 43 can be adjusted in real time, and this adjustment is automatically adjusted based on the water temperature of the heated cooling water near one end of the water storage sponge 41 in the water storage chamber 42. When the water temperature there is low, the heated cooling water can still cool the pipe to be cooled to a certain extent; when the water temperature there rises to the set value, the bimetallic strip 44 deforms, so that the water-permeable hole 43 opens, and the overheated cooling water can be discharged in time, and the higher the water temperature there is, the greater the opening amplitude of the water-permeable hole 43, and the higher the drainage efficiency of the overheated cooling water. Therefore, through this automatic dynamic adjustment, the cooling uniformity of the pipe to be cooled can be effectively ensured, and the cooling water that fluctuates between hot and cold can be prevented from affecting the cooling and forming quality of the pipe to be cooled.

[0035] In addition, refer to Figure 2 and Figure 3 The inner wall of the water storage jacket 4 is fixedly connected with a sleeve 45 for embedding the water storage sponge 41, so as to facilitate the replacement of the water storage sponge 41, so as to prevent the water storage sponge 41 from hardening after long-term contact with overheated cooling water and scratching the outer wall of the cooling pipe. A transition cone sleeve 55 is connected between the water storage jacket 4 and the rotating seat 51. The inner wall of the transition cone sleeve 55 is expanded along the discharge direction of the extruder 1. The transition cone sleeve 55 is fixedly connected to the water storage jacket 4 but can be detachably installed on the rotating seat 51, so that when cooling pipes of different sizes, it is convenient to replace water storage jackets 4 of different sizes.

[0036] At the same time, refer to Figure 1 and Figure 2 The above-mentioned driving assembly includes an outer ring gear 52 coaxially fixed to a rotating seat 51, a driving gear 53 rotatably arranged outside the cooling cylinder 3, and a driving motor 54 installed outside the cooling cylinder 3. The driving motor 54 is used to drive the driving gear 53 to rotate. The driving gear 53 is meshingly connected with the outer ring gear 52. The rotating seat 51 is rotatably installed on the end surface of the cooling cylinder 3 through a bearing.

[0037] The present application embodiment discloses a method for preparing a corrosion-resistant toughened PVC pipe. Based on the above-mentioned corrosion-resistant toughened PVC pipe preparation device, refer to Figure 1 and Figure 2 , which comprises the following steps: S1. After mixing the new material according to the ratio, it is mixed with the crushed recycled material to form a mixture, and the mixture is put into the extruder 1 for extrusion; S2. The pipe extruded from the extruder 1 is pulled through the cooling cylinder 3, and the pipe to be cooled is kept coaxial with the cooling cylinder 3; S3. Start the spray mechanism and the water storage mechanism, so that the cooling water sprayed from the multiple nozzles 62 is flushed into the water storage chamber 42, and the cooling water jacket surrounding the pipe to be cooled is formed in the water storage chamber 42 by the rotation of the water storage jacket 4; S4. As the pipe to be cooled is continuously output, the cooling water jacket in the water storage chamber 42 continues to efficiently cool and shape the pipe to be cooled.

[0038] The embodiment of the present application discloses a corrosion-resistant toughened PVC pipe, which is prepared by the above-mentioned corrosion-resistant toughened PVC pipe preparation method. The new material includes the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 10-12 parts of acrylic rubber, 25-28 parts of light calcium carbonate, 3.5-4.5 parts of stabilizer, 0.9-1 part of stearic acid, 1.6-2 parts of modified graphene oxide, 0.9-1.1 parts of PE wax, and 1.8-2.2 parts of titanium dioxide.

[0039] The implementation principle of the corrosion-resistant toughened PVC pipe preparation device of the present application embodiment is: The pipe extruded from the extruder 1 is pulled through the hollow part of the water storage jacket 4, and then the external high-pressure water source is transported to the spray pipe 61 and sprayed out at high speed through multiple nozzles 62. The cooling water sprayed from the nozzles 62 enters the water storage chamber 42 between the water storage jacket 4 and the pipe to be cooled. The water storage sponge 41 can seal the end of the water storage chamber 42 away from the nozzle 62 to a certain extent, avoiding the cooling water in the water storage chamber 42 to flow out directly from the end in large quantities, which can increase the contact time between the cooling water and the pipe to be cooled to a certain extent, thereby improving the cooling efficiency.

[0040] At the same time, the driving component drives the rotating seat 51 to rotate, thereby driving the water storage jacket 4 to rotate at high speed. When rotating, the water storage jacket 4 can stir the cooling water in the water storage chamber 42 to a certain extent, so that the cooling water in the water storage chamber 42 can follow the rotation as much as possible and form a cooling water jacket surrounding the outer periphery of the pipe to be cooled, which can further significantly increase the contact time between the cooling water and the pipe to be cooled, thereby improving the cooling effect of the cooling water on the pipe to be cooled, thereby reducing the amount of cooling water used, saving water resources and reducing production costs.

[0041] When the water storage jacket 4 rotates at high speed, the multiple water stirring bars 71 and the multiple water stirring protrusions 72 rotate with the water storage jacket 4. When the multiple water stirring bars 71 rotate, on the one hand, they can drive the cooling water in the water storage chamber 42 to rotate to form a cooling water jacket and maintain the shape of the cooling water jacket; on the other hand, they can transport the cooling water sprayed by the nozzle 62 at the port of the water storage jacket 4 to the water storage sponge 41, forming a water flow in the opposite direction of the direction of travel of the pipe to be cooled, which can promote the cooling effect of the cooling water on the pipe to be cooled to a certain extent. At the same time, when the multiple water stirring protrusions 72 rotate with the water storage jacket 4, they will vigorously stir the cooling water transported by the multiple water stirring bars 71 to form a strong cooling zone for the pipe to be cooled.

[0042] Furthermore, affected by the centrifugal force during the rotation of the water storage jacket 4, this part of the heated cooling water completes the cooling process, and most of it is discharged through the water permeable holes 43 on the water storage jacket 4, thereby forming a complete flow path for the cooling water in the water storage chamber 42, so that the low-temperature cooling water can continuously flow into the water storage chamber 42 to cool the cooling pipes and then be discharged, which greatly improves the cooling efficiency of the cooling pipes. At the same time, the cooling water in the water storage chamber 42 forms a cooling water jacket, which increases the contact time with the cooling pipes and reduces the amount of cooling water used.

[0043] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A corrosion-resistant toughened PVC pipe preparation device, comprising an extruder (1) and a cooling water tank (2), characterized in that: A cooling cylinder (3) is provided on the upper cover of the cooling water tank (2), and a water storage mechanism and a spray mechanism are sequentially provided on the cooling cylinder (3) along the discharge direction of the extruder (1); The water storage mechanism comprises: A water storage jacket (4) is coaxially arranged with the cooling cylinder (3), wherein the hollow portion thereof allows the pipe to be cooled to pass through, and a water storage cavity (42) is formed between the water storage jacket (4) and the outer wall of the pipe to be cooled; A rotating seat (51) is coaxially rotatably mounted in the cooling cylinder (3), and the water storage jacket (4) is mounted on the rotating seat (51); A water storage sponge (41) is annular and mounted on an end of the water storage jacket (4) away from the spray mechanism, the inner diameter of the water storage sponge (41) being no larger than the outer diameter of the pipe to be cooled; and A driving assembly, used for driving the rotating seat (51) to rotate on the cooling cylinder (3); The spray mechanism comprises: A spray pipe (61) connected to an external high-pressure water source; A plurality of nozzles (62) are provided and are distributed at equal intervals on the spray pipe (61); the nozzles (62) are connected to the spray pipe (61), and the spraying direction of the nozzles (62) points to the water storage chamber (42).

2. The corrosion-resistant toughened PVC pipe preparation device according to claim 1, characterized in that: A transition cone sleeve (55) is connected between the water storage sleeve (4) and the rotating seat (51), and the inner wall of the transition cone sleeve (55) is in a flared shape along the discharge direction of the extruder (1).

3. The corrosion-resistant toughened PVC pipe preparation device according to claim 1, characterized in that: A plurality of water stirring structures arranged along the axial direction are fixedly connected to the inner wall of the water storage jacket (4), and the height of the water stirring structures along the radial direction of the water storage jacket (4) is less than the thickness of the annular water storage cavity (42).

4. The corrosion-resistant toughened PVC pipe preparation device according to claim 3, characterized in that: The water stirring structure is configured as one of a water stirring strip (71) and a plurality of water stirring protrusions (72), or a combination of both.

5. The corrosion-resistant toughened PVC pipe preparation device according to claim 4, characterized in that: The water stirring structure comprises a plurality of water stirring protrusions (72) close to a side of the water storage sponge (41) and a plurality of water stirring strips (71) away from a side of the water storage sponge (41), wherein the water stirring strips (71) are arranged in a spiral shape; The plurality of water stirring bars (71) are used to drive the cooling water in the water storage chamber (42) to surge in a direction close to the water storage sponge (41) when rotating along with the water storage jacket (4).

6. The corrosion-resistant toughened PVC pipe preparation device according to claim 5, characterized in that: A plurality of water-permeable holes (43) are formed through the periphery of one end of the water storage sleeve (4) close to the water storage sponge (41).

7. The corrosion-resistant toughened PVC pipe preparation device according to claim 6, characterized in that: A plurality of bimetallic strips (44) corresponding to the plurality of water permeable holes (43) are fixedly connected to the outer wall of the water storage jacket (4); one end of the bimetallic strip (44) is fixedly connected to the outer wall of the water storage jacket (4), and the other end is attached to the outer wall of the water storage jacket (4) and covers the corresponding water permeable holes (43); The bimetallic strip (44) bends in a direction away from the water storage jacket (4) after contacting cooling water having a temperature greater than a set temperature that seeps out of the water permeable hole (43).

8. The corrosion-resistant toughened PVC pipe preparation device according to claim 1, characterized in that: A clamping sleeve (45) for embedding the water storage sponge (41) is fixedly connected to the inner wall of the water storage sleeve (4).

9. A method for preparing a corrosion-resistant toughened PVC pipe, based on a corrosion-resistant toughened PVC pipe preparation device as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Mixing the new materials according to the proportion, and then mixing with the crushed recycled materials to form a mixture, and feeding the mixture into the extruder (1) for extrusion; S2. pulling the tube extruded by the extruder (1) through the cooling cylinder (3), and keeping the tube to be cooled coaxial with the cooling cylinder (3); S3. activating the spray mechanism and the water storage mechanism, so that the cooling water sprayed from the plurality of nozzles (62) is flushed into the water storage chamber (42), and a cooling water jacket surrounding the pipe to be cooled is formed in the water storage chamber (42) by means of the rotation of the water storage jacket (4); S4. As the pipe to be cooled is continuously output, the cooling water jacket in the water storage chamber (42) continues to efficiently cool and shape the pipe to be cooled.

10. A corrosion-resistant toughened PVC pipe, prepared by the method for preparing a corrosion-resistant toughened PVC pipe according to claim 9, characterized in that: The new material includes the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 10-12 parts of acrylic rubber, 25-28 parts of light calcium carbonate, 3.5-4.5 parts of stabilizer, 0.9-1 part of stearic acid, 1.6-2 parts of modified graphene oxide, 0.9-1.1 parts of PE wax and 1.8-2.2 parts of titanium dioxide.

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