Process and equipment for compounding chlorinated polyvinyl chloride for pressure pipes

Abstract

The application belongs to the technical field of new material detection, and particularly relates to a chlorinated polyvinyl chloride mixing process for pressure pipelines and equipment thereof, which comprises a base, a mixing barrel is arranged on one side of the upper end surface of the base, raw chlorinated polyvinyl chloride for manufacturing pressure pipelines is mixed in the mixing barrel, a support column fixedly connected with the base is arranged on the lower end surface of the mixing barrel, the upper part of the support column is spherical and rotationally connected with the bottom of the mixing barrel, a shaking unit is jointly arranged between the outer part of the mixing barrel and the base, an inner stirring unit is placed on the outer part of the upper end surface of the mixing barrel, the lower part of the inner stirring unit is placed into the inner part of the mixing barrel, the stirring direction of the inner stirring unit is opposite to the shaking direction of the shaking unit, and the method comprises weighing, batching, mixing, discharging, and screening. The inner side ring is repeatedly rotated on the upper part of the lead screw through rotation of the lead screw, and then up-and-down movement is generated, the angle between the first folding plate and the second folding plate is changed, and the raw chlorinated polyvinyl chloride in the mixing barrel is continuously and variably stirred.

Description

Technical Field

[0001] This invention relates to the field of new material production and testing technology, specifically a chlorinated polyvinyl chloride (PVC) blending process and equipment for pressure pipelines. Background Technology

[0002] Chlorinated polyvinyl chloride (PVC) is a product of further chlorination modification of PVC. Its corrosion resistance, heat resistance, solubility, flame retardancy, and mechanical strength are all significantly improved compared to PVC. It is widely used in construction, chemical industry, metallurgy, shipbuilding, electrical appliances, textiles and other fields. Chlorinated PVC is also used to manufacture pressure pipes after being compounded and extruded.

[0003] The prior art discloses a Chinese patent with application number CN202320609521.1 (IPC classification number: G01N3 / 08), which is a testing device for chlorinated polyvinyl chloride sleeves for high-voltage power cables. It discloses that the tube is inserted into the inner cavity of the testing box for testing, so as to avoid uneven force on both ends caused by vertical downward squeezing of the tube during the testing process.

[0004] However, existing technologies still have certain shortcomings. For example, the technical solution with application number CN202320609521.1, although it realizes the extrusion test after multiple placement steps of the formed pipe fitting, since the pressure-bearing pipe fitting is obtained by extrusion after mixing the raw materials of chlorinated polyvinyl chloride, it is impossible to perform pressure test on the pipeline during continuous transportation immediately after the pressure-bearing pipeline is extruded, which brings inconvenience to mass production.

[0005] Based on the above, a process and equipment for blending chlorinated polyvinyl chloride for pressure pipelines are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a chlorinated polyvinyl chloride (PVC) blending process and equipment for pressure pipelines, so as to solve the problems mentioned in the background art.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A chlorinated polyvinyl chloride (PVC) mixing device for pressure pipelines includes a base, a mixing tank on one side of the upper end face of the base, the mixing tank being used to mix chlorinated PVC, a raw material for the manufacture of pressure pipelines, and a support column fixedly connected to the base at the middle of the lower end face of the mixing tank. The upper part of the support column is spherical and rotatably connected to the bottom of the mixing tank. A shaking unit is installed between the outside of the mixing tank and the base. An inner stirring unit is placed outside the upper end face of the mixing tank, and the lower part of the inner stirring unit is inserted into the inside of the mixing tank, with the stirring direction of the inner stirring unit opposite to the shaking direction of the shaking unit.

[0009] An extruder connected to the interior is installed on one side of the lower part of the mixing tank. A support unit is placed on the other side of the upper end of the base. The support unit is used to support the pressure pipe extruded by the extruder. A detection unit is fixedly installed on one side of the support unit. The detection unit is used to tap the formed pressure pipe to test its strength.

[0010] Preferably, a semi-circular sleeve is fixedly installed at the bottom of the mixing barrel, and an insert is fixedly installed on the lower end face of the inner cavity of the mixing barrel. The stirring unit includes a barrel ring placed on top of the mixing barrel, a bracket with a central circular hole fixedly installed in the middle of the barrel ring, and multiple movable plates circumferentially provided on the upper end face of the bracket. The movable plates are slidably connected to the bracket by an electric slider. The multiple movable plates are arc-shaped on one side. A lead screw is provided in the middle of the bracket, and a drive wheel is slidably installed on the upper end face of one of the movable plates by an electric slider. A driven wheel that is fixedly connected to the top of the lead screw is engaged on one side of the drive wheel.

[0011] Preferably, an inner ring is rotatably mounted on the upper part of the lead screw, and a rotating ring is rotatably mounted on the outside of the inner ring. A bottom ring is fixedly mounted on the lower part of the lead screw. A first folding plate is circumferentially hinged to the outer side of the rotating ring, and a second folding plate is circumferentially hinged to the outer side of the bottom ring. The first folding plate and the second folding plate are hinged together. A central block is fixedly mounted in the middle of the lead screw. Multiple sets of corresponding guide plates are fixedly mounted around the central block. Each set of guide plates has a corresponding slide groove on one side. A slide frame is slidably mounted in the slide groove on each set of guide plates. Springs are provided on both sides of the slide frame, and the springs on both sides are respectively connected to the corresponding guide plates on both sides. A scraper is fixedly mounted on one side of the slide frame.

[0012] Preferably, the shaking unit includes an outer ring fixedly connected to the mixing tank. A first support rod is circumferentially provided on the lower end face of the outer ring. One side of the first support rod is spherical and rotatably connected to the lower part of the outer ring. A second support rod is hinged to the other side of the first support rod. The side of the second support rod away from the first support rod is spherical and rotatably connected to the base. A hydraulic cylinder is circumferentially provided on the lower part of the mixing tank and fixedly connected to the base. A lifting ring is fixedly installed on the telescopic ends of multiple hydraulic cylinders. A circumferential guide rail is circumferentially provided on the upper end face of the lifting ring. An extrusion ball is rotatably installed in the guide rail by an electric slider.

[0013] Preferably, the hosting unit includes a placement frame with an arc-shaped center. Fixing members are fixedly installed on both sides of the lower end face of the placement frame. A rotating wheel is rotatably installed in the center of the fixing member. A first motor is fixedly installed on one side of the fixing member. A synchronizing rod is fixedly installed at the output end of the first motor. The synchronizing rod passes through and slides between the two fixing members. The fixing members are fixedly connected to the rotating wheels on both sides. Guide rods are fixedly installed on the upper part of both sides of the placement frame.

[0014] Preferably, a movable frame is slidably mounted on both guide rods. The upper end face of the movable frame is arc-shaped in the middle. Lower plates are fixedly mounted on both sides of the lower end face of the movable frame. A rack plate is fixedly mounted on the lower end face of the lower plate. The rack plate is located below and meshes with the rotating wheel. A threaded rod is rotatably mounted on one side of the middle of the movable frame. A front plate is rotatably mounted on the threaded rod. The middle of the front plate is circular. The lower part of the front plate is elongated and slidably connected to the movable frame. A chamfered plate is circumferentially provided on one side of the front plate. The chamfered plate is slidably connected to the front plate by an electric slider. A pull rod is slidably mounted on the middle of one side of the chamfered plate. An arc plate that is slidably connected to the chamfered plate is fixedly mounted on one end of the pull rod. A spring is installed between the arc plate and the chamfered plate.

[0015] Preferably, a central frame is provided between the movable frame and the placement frame. The two sides of the central frame are slidably connected to the guide rods on both sides. Vertical slots are opened on both sides of the central frame. A connecting plate is slidably installed in the vertical slots on both sides. An electric push rod is installed between the upper part of the connecting plate and the central frame. An outer frame is fixedly installed in the middle of the connecting plate. Vertical buffer slots are opened on both sides of the outer frame. T-shaped plates are slidably installed in the buffer slots on both sides. A support plate is installed between the T-shaped plates on both sides. The upper surface of the support plate is arc-shaped in the middle. Multiple springs are fixedly installed on the lower surface of the support plate, and the ends of the springs away from the support plate are connected to the outer frame.

[0016] Preferably, the detection unit includes a vertical plate, which is fixedly connected to a connecting plate. A crossbar is fixedly installed in the middle of the vertical plate, and a collar is rotatably installed on the outer side of the crossbar. A torsion spring is provided between the collar and the crossbar. A striking plate is fixedly installed on one side of the collar. A second motor is fixedly installed on the upper part of one side of the vertical plate. A pressing wheel is fixedly installed at the output end of the second motor. A lifting groove is provided below the pressing wheel on the vertical plate. An L-shaped plate is slidably installed in the lifting groove. A spring is installed between the lower end face of the L-shaped plate and the lifting groove. A protrusion is fixedly installed on the upper end face of the L-shaped plate. A pressing rod is fixedly installed on the lower end face of the L-shaped plate and is located above the striking plate.

[0017] A mixing process for chlorinated polyvinyl chloride (PVC) mixing equipment for pressure pipelines, the chlorinated PVC mixing process includes the following steps:

[0018] S1: Weighing and ingredient mixing:

[0019] The chlorinated polyvinyl chloride mixture is made by weighing and batching chlorinated polyvinyl chloride resin, organotin heat stabilizer, impact modifier, lubricant, processing aid, filler and colorant, and then putting them into a mixing tank for hot and cold mixing.

[0020] S2: Mixed:

[0021] The chlorinated polyvinyl chloride mixture raw material in the mixing tank is continuously stirred by the internal stirring unit, and at the same time, the mixing tank is shaken by the shaking unit.

[0022] S3: Feeding and sieving:

[0023] After the cold-mixed chlorinated polyvinyl chloride compound is discharged and sieved, it is finally extruded through an extruder.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention uses a lead screw to rotate an inner ring at the top of the lead screw, causing it to move up and down repeatedly. This up-and-down movement of the inner ring synchronously drives the rotating ring to move up and down as well. The angle between the first and second folding plates changes during this movement, continuously agitating the chlorinated polyvinyl chloride raw material in the mixing tank. Simultaneously, as the lead screw rotates, the first and second folding plates push the slide, causing the scraper to contact the inside of the mixing tank, at which point the lead screw stops rotating. Manually rotating the tank ring then facilitates scraping off the raw material from the inner wall of the mixing tank, thus simplifying the cleaning process.

[0026] 2. In this invention, the hydraulic cylinder is raised until the extrusion ball contacts the semi-circular sleeve, and then the mixing barrel tilts to one side. Subsequently, the electric slider is activated to drive the extrusion ball to sway in the guide rail. At this time, multiple first and second support rods cooperate to work according to the tilt direction of the mixing barrel, thereby realizing the shaking and stirring operation on the outside of the mixing barrel, and realizing the cooperation of the internal stirring unit to shake the outside of the mixing barrel in the opposite direction.

[0027] 3. In this invention, the pressure-bearing pipe is extruded by starting the extruder, and then multiple C-shaped plates are used to clamp one side wall of the pipe circumferentially. Then, the first motor is turned on to make two rotating wheels rotate in conjunction with the extruder. When the rotating wheels rotate, the moving frame slides on the guide rod through two rack plates, thereby causing the front plate to move with one end of the pressure-bearing pipe. This cooperates with the extruder to extrude the pressure-bearing pipe without affecting the continuous forward movement of the pressure-bearing pipe during extrusion.

[0028] 4. The present invention enables the extrusion wheel to rotate by turning on the second motor. When the extrusion wheel rotates, it intermittently extrudes the protrusion, thereby causing the L-shaped plate to move up and down in the lifting groove. When the L-shaped plate moves up and down, it simultaneously drives the extrusion rod to move up and down, thereby intermittently pressing and striking the plate, so that the striking plate presses and tests the pressure-bearing pipe. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a frontal schematic diagram of the overall structure of the present invention during the production of pressure-bearing pipelines;

[0031] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure between the mixing tank and the switching unit of the present invention;

[0033] Figure 4 This is a partial cross-sectional view of the mixing tank of the present invention;

[0034] Figure 5 This is a schematic diagram of the underside of the drive wheel of the present invention (top section).

[0035] Figure 6 This is a schematic diagram of the internal stirring unit structure of the present invention;

[0036] Figure 7 This is a partial cross-sectional schematic diagram of the internal stirring unit of the present invention;

[0037] Figure 8 This is a schematic diagram of the managed unit structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the mobile frame structure of the present invention;

[0039] Figure 10 This is the present invention. Figure 9 A magnified structural diagram of part A;

[0040] Figure 11 This is a schematic diagram of the central frame structure of the present invention;

[0041] Figure 12 This is a schematic diagram of the detection unit structure of the present invention;

[0042] Figure 13 This is a schematic diagram of the cross-sectional structure of the outer frame of the present invention.

[0043] The attached figures are labeled as follows:

[0044] 1. Base; 2. Mixing barrel; 20. Support column; 21. Semicircular sleeve; 22. Insertion piece; 23. Barrel ring; 24. Bracket; 25. Moving plate; 26. Lead screw; 260. Inner ring; 261. Rotating ring; 262. Bottom ring; 263. First folding plate; 264. Second folding plate; 265. Center block; 266. Guide plate; 267. Slide groove; 268. Slide frame; 269. Scraper; 27. Drive wheel; 28. Driven wheel; 29. ​​Extruder; 3. Shaking unit; 31. Outer ring; 32. First support rod; 33. Second support rod; 34. Hydraulic cylinder; 35. Lifting ring; 36. Guide rail; 37. Extrusion ball; 4. Support unit; 41. Placement rack; 411. 412. Fixing component; 413. Rotating wheel; 414. First motor; 415. Synchronizing rod; 416. Guide rod; 42. Moving frame; 421. Lower plate; 422. Rack plate; 423. Threaded rod; 424. Front plate; 425. C-shaped plate; 426. Tie rod; 427. Arc plate; 43. Middle frame; 431. Vertical slot; 432. Connecting plate; 433. Electric push rod; 434. Outer frame; 435. Buffer slot; 436. T-shaped plate; 437. Support plate; 5. Detection unit; 51. Vertical plate; 52. Horizontal bar; 53. Collar; 54. Striking plate; 55. Second motor; 56. Extrusion wheel; 57. Lifting slot; 58. L-shaped plate; 59. Protrusion; 590. Extrusion rod. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] A process and equipment for blending chlorinated polyvinyl chloride for pressure pipelines is characterized by applying stable pressure to the new material for testing. The IPC classification number is: G01N3 / 08.

[0047] A chlorinated polyvinyl chloride (PVC) mixing equipment for pressure pipelines is characterized by the production of chlorinated PVC, and its IPC classification number is: C08L27*.

[0048] like Figures 1-13As shown, a chlorinated polyvinyl chloride (PVC) mixing device for pressure pipelines is disclosed. The mixing device includes a base 1, and a mixing tank 2 is provided on one side of the upper end face of the base 1. The mixing tank 2 is used to mix the chlorinated PVC raw material used for the production of pressure pipelines. A support column 20 is provided in the middle of the lower end face of the mixing tank 2 and is fixedly connected to the base 1. The upper part of the support column 20 is spherical and rotatably connected to the bottom of the mixing tank 2. A shaking unit 3 is installed between the outside of the mixing tank 2 and the base 1. An internal stirring unit is placed on the outside of the upper end face of the mixing tank 2. The lower part of the internal stirring unit is inserted into the inside of the mixing tank 2, and the stirring direction of the internal stirring unit is opposite to the shaking direction of the shaking unit 3. By having the shaking unit 3 and the internal stirring unit run in opposite directions, the chlorinated PVC raw material in the mixing tank 2 can be mixed more evenly.

[0049] An extruder 29 is installed on one side of the lower part of the mixing tank 2. The feed hopper of the extruder 29 is connected to the discharge port of the mixing tank 2. The raw material is discharged from the mixing tank 2 and enters the feed hopper for screening and extrusion. A support unit 4 is placed on the other side of the upper end face of the base 1. The support unit 4 is used to support the pressure-bearing pipe extruded by the extruder 29. A detection unit 5 is fixedly installed on one side of the support unit 4. The detection unit 5 is used to tap the formed pressure-bearing pipe to test its strength. The setting of the extruder 29 facilitates the extrusion of the mixed chlorinated polyvinyl chloride raw material to prepare the pressure-bearing pipe. The setting of the support unit 4 facilitates the placement of the extruded pressure-bearing pipe.

[0050] like Figure 3 , Figure 6 , Figure 7 As shown, a semi-circular sleeve 21 is fixedly installed at the lower part of the mixing tank 2, and an insert 22 is fixedly installed on the lower end face of the inner cavity of the mixing tank 2. The stirring unit includes a barrel ring 23 placed on top of the mixing tank 2. A bracket 24 with a central circular hole is fixedly installed in the middle of the barrel ring 23. Multiple movable plates 25 are arranged circumferentially on the upper end face of the bracket 24. The movable plates 25 are slidably connected to the bracket 24 by an electric slider. The multiple movable plates 25 are arc-shaped on one side when they are close to each other. A lead screw 26 is provided in the middle of the bracket 24. The movable plates 25 are moved on one side. A drive wheel 27 is slidably mounted on the upper surface of plate 25 via an electric slider. A driven wheel 28, which is fixedly connected to the top of screw 26, is engaged on one side of the drive wheel 27. When the raw materials of chlorinated polyvinyl chloride are mixed, the electric slider is opened to drive multiple moving plates 25 to move closer to each other until they clamp the screw 26. The opening of the electric slider drives the drive wheel 27 to rotate. When the drive wheel 27 rotates, it engages with the driven wheel 28, thereby causing the screw 26 to rotate and stirring the raw materials in the mixing tank 2.

[0051] An inner ring 260 is rotatably mounted on the upper part of the lead screw 26, and a rotating ring 261 is rotatably mounted on the outside of the inner ring 260. A bottom ring 262 is fixedly mounted on the lower part of the lead screw 26. A first folding plate 263 is circumferentially hinged to the outer side of the rotating ring 261, and a second folding plate 264 is circumferentially hinged to the outer side of the bottom ring 262. The first folding plate 263 and the second folding plate 264 are hinged together. A center block 265 is fixedly mounted in the middle of the lead screw 26. Multiple sets of corresponding guide plates 266 are fixedly mounted around the center block 265. Each set of guide plates 266 has a corresponding sliding groove 267 on one side. A slide 268 is slidably mounted in the sliding groove 267 of each set of guide plates 266. Springs are provided on both sides of the slide 268, and the springs on both sides are respectively connected to the corresponding guide plates 266 on both sides. A fixed part is mounted on one side of the slide 268. When the scraper 269 agitates the raw materials in the mixing tank 2 at different ranges, the screw 26 rotates, causing the inner ring 260 to rotate repeatedly on the upper part of the screw 26, thus moving up and down. When the inner ring 260 moves up and down, it simultaneously drives the rotating ring 261 to move up and down. When the rotating ring 261 moves up and down, it causes the angle between the first folding plate 263 and the second folding plate 264 to change, thereby continuously agitating the chlorinated polyvinyl chloride raw materials in the mixing tank 2. At the same time, when the screw 26 rotates, the first folding plate 263 and the second folding plate 264 push the slide 268, which causes the scraper 269 to contact the inside of the mixing tank 2, and then stops the rotation of the screw 26. Afterwards, manually rotating the drum ring 23 can also facilitate scraping off the raw materials on the inner wall of the mixing tank 2, thus facilitating the cleaning operation of the inner wall of the mixing tank 2.

[0052] like Figure 3 , Figure 5 , Figure 5 As shown, the shaking unit 3 includes an outer ring 31 fixedly connected to the mixing tank 2. A first support rod 32 is circumferentially provided on the lower end face of the outer ring 31. One side of the first support rod 32 is spherical and rotatably connected to the lower part of the outer ring 31. A second support rod 33 is hinged to the other side of the first support rod 32. The side of the second support rod 33 away from the first support rod 32 is spherical and rotatably connected to the base 1. A hydraulic cylinder 34 is circumferentially provided on the lower part of the mixing tank 2 and fixedly connected to the base 1. A lifting ring 35 is fixedly installed on the telescopic ends of multiple hydraulic cylinders 34. A circumferential guide rail 36 is circumferentially provided on the upper end face of the lifting ring 35. An extrusion ball 37 is mounted inside the guide rail 36 via an electric slider. When the mixing barrel 2 is shaken in the opposite direction by the internal stirring unit, the hydraulic cylinder 34 is raised until the extrusion ball 37 contacts the semi-circular sleeve 21, after which the mixing barrel 2 tilts to one side. Then, the electric slider is activated, causing the extrusion ball 37 to shake circumferentially inside the guide rail 36. At this time, multiple first support rods 32 and second support rods 33 cooperate according to the tilt direction of the mixing barrel 2, thereby realizing the shaking and stirring operation on the outside of the mixing barrel 2, and realizing the opposite direction shaking of the outside of the mixing barrel 2 by the internal stirring unit.

[0053] like Figure 8 , Figure 9 , Figure 10 As shown, the storage unit 4 includes a placement frame 41, which has an arc-shaped middle section. Fixing members 411 are fixedly installed on both sides of the lower end face of the placement frame 41. A rotating wheel 412 is rotatably mounted in the middle of the fixing member 411. A first motor 413 is fixedly installed on one side of the fixing member 411. A synchronizing rod 414 is fixedly installed at the output end of the first motor 413. The synchronizing rod 414 passes through and slides between the two fixing members 411. The fixing members 411 are fixedly connected to the rotating wheels 412 on both sides. Guide rods 415 are fixedly installed on the upper part of both sides of the placement frame 41. After the raw materials of chlorinated polyvinyl chloride are mixed, the product is manufactured... When extruding the pressure pipe, the placement frame 41 is moved to align and fit with the extruder 29. Then, the extruder 29 is turned on to extrude the pressure pipe. Next, multiple C-shaped plates 425 are used to clamp one side wall of the pipe circumferentially. Then, the first motor 413 is turned on to make the two rotating wheels 412 rotate in coordination with the extruder 29. When the rotating wheels 412 rotate, the moving frame 42 slides on the guide rod 415 through the two rack plates 422, thereby causing the front plate 424 to move with one end of the pressure pipe. This cooperates with the extruder 29 to extrude the pressure pipe without affecting the continuous forward movement of the pressure pipe during extrusion.

[0054] A movable frame 42 is slidably mounted on two guide rods 415. The upper end face of the movable frame 42 is arc-shaped in the middle. Lower plates 421 are fixedly mounted on both sides of the lower end face of the movable frame 42. A rack plate 422 is fixedly mounted on the lower end face of the lower plate 421. The rack plate 422 is located below and meshes with the rotating wheel 412. A threaded rod 423 is rotatably mounted on one side of the middle of the movable frame 42. A front plate 424 is rotatably mounted on the threaded rod 423. The front plate 424 has a circular hole in the middle. The lower part of the front plate 424 is a long plate and is slidably connected to the movable frame 42. A U-shaped plate 425 is provided circumferentially on one side of the front plate 424. The U-shaped plate 425 is connected to the front... Position plate 424 is slidably connected by an electric slider. A pull rod 426 is slidably installed on the middle of one side of the C-shaped plate 425. An arc plate 427 that is slidably connected to the C-shaped plate 425 is fixedly installed at one end of the pull rod 426. A spring is installed between the arc plate 427 and the C-shaped plate 425. The rotation of the threaded rod 423 facilitates the forward and backward movement of the front position plate 424, thereby facilitating the contact or separation of one side wall of the pressure-bearing pipe. The opening of the electric slider causes multiple C-shaped plates 425 to move closer or further apart, which facilitates the contact and fixation of one side wall of the pressure-bearing pipe, making it more stable when the pressure-bearing pipe is tapped.

[0055] A central frame 43 is provided between the movable frame 42 and the placement frame 41. The central frame 43 is slidably connected to guide rods 415 on both sides. Vertical slots 431 are provided on both sides of the central frame 43. Connecting plates 432 are slidably installed within the vertical slots 431 on both sides. Electric push rods 433 are installed between the upper parts of both sides of the connecting plates 432 and the central frame 43. An outer frame 434 is fixedly installed in the middle of the connecting plate 432. Vertical buffer slots 435 are provided on both sides of the outer frame 434. T-shaped plates 436 are slidably installed within the buffer slots 435 on both sides. A support plate 437 is installed between the T-shaped plates 436 on both sides. The upper end face of plate 437 is arc-shaped in the middle. Multiple springs are fixedly installed on the lower end face of plate 437, and the ends of the springs away from plate 437 are connected to the outer frame 434. The extension and retraction of electric push rod 433 facilitates the overall lifting and lowering of connecting plate 432. When connecting plate 432 is lifted and lowered, the distance between outer frame 434 and plate 437 is adjusted, thereby controlling the elastic force range of the springs set between plate 437 and outer frame 434. The springs are also used to detect the lifting and resetting of plate 437 after the detection unit 5 cancels the impact on the pressure pipe, thereby repeatedly striking the lower part of the pressure pipe.

[0056] like Figure 12 As shown, the detection unit 5 includes a vertical plate 51, which is fixedly connected to a connecting plate 432. A crossbar 52 is fixedly installed in the middle of the vertical plate 51. A collar 53 is rotatably installed on one side of the crossbar 52. A torsion spring is provided between the collar 53 and the crossbar 52. A striking plate 54 is fixedly installed on one side of the collar 53. A second motor 55 is fixedly installed on the upper part of one side of the vertical plate 51. A pressing wheel 56 is fixedly installed at the output end of the second motor 55. A lifting groove 57 is provided below the pressing wheel 56 on the vertical plate 51. An L-shaped plate 58 is slidably installed in the lifting groove 57. The lower end face of the L-shaped plate 58 is flush with the lifting groove. A spring is installed between 57. A protrusion 59 is fixedly installed on the upper end face of the L-shaped plate 58. A pressing rod 590 is fixedly installed on the lower end face of the L-shaped plate 58 and is located above the striking plate 54. When the pressure of the pressure-bearing pipeline is tested, the second motor 55 is turned on to make the pressing wheel 56 rotate. When the pressing wheel 56 rotates, it intermittently presses the protrusion 59, thereby causing the L-shaped plate 58 to move up and down in the lifting groove 57. When the L-shaped plate 58 moves up and down, it synchronously drives the pressing rod 590 to move up and down, thereby intermittently pressing the striking plate 54, so that the striking plate 54 presses the pressure-bearing pipeline for testing.

[0057] A mixing process for chlorinated polyvinyl chloride (PVC) mixing equipment for pressure pipelines, the chlorinated PVC mixing process includes the following steps:

[0058] S1: Weighing and ingredient mixing:

[0059] The chlorinated polyvinyl chloride mixture is made by weighing and batching chlorinated polyvinyl chloride resin, organotin heat stabilizer, impact modifier, lubricant, processing aid, filler and colorant, and then putting it into mixing tank 2 for hot mixing and cold mixing.

[0060] S2: Mixed:

[0061] The chlorinated polyvinyl chloride mixing raw material in the mixing tank 2 is continuously stirred by the internal stirring unit, and at the same time, the shaking unit 3 is used to shake the mixing tank 2.

[0062] S3: Feeding and sieving:

[0063] After the cold-mixed chlorinated polyvinyl chloride compound is discharged and sieved, it is finally extruded through extruder 29.

[0064] When using this invention, the raw materials required for the chlorinated polyvinyl chloride (PVC) compound are first weighed. The proportions of each component of the raw materials are as follows: 88.64 kg of chlorinated PVC resin, 0.39 kg of stabilizer, 0.26 kg of paraffin wax, 0.22 kg of oxidized polyethylene wax, 0.41 kg of saxo-coated wax, 0.21 kg of auxiliary lubricant, 0.26 kg of antioxidant, 0.13 kg of UV stabilizer, 1.67 kg of processing aid, 2.65 kg of impact modifier, 0.3 kg of titanium dioxide, 0.0355 kg of black powder, 0.0062 kg of blue powder, 0.0062 kg of red powder, 0.42 kg of calcium stearate, and 4.43 kg of nano-calcium carbonate.

[0065] The raw materials are distributed as follows: 1. Chlorinated polyvinyl chloride resin 95.7312Kg, stabilizer 0.4212Kg, paraffin wax 0.2808Kg, oxidized polyethylene wax 0.2024Kg, sarcosinate wax 0.4428Kg, auxiliary lubricant 0.2268Kg, antioxidant 0.2808Kg, UV stabilizer 0.1196Kg, processing aid 1.8036Kg, impact modifier 2.862Kg, titanium dioxide 0.324Kg, black powder 0.03834Kg, blue powder 0.006696Kg, red powder 0.006696Kg, calcium stearate 0.4536Kg, and nano calcium carbonate 4.7844Kg.

[0066] II. Chlorinated polyvinyl chloride resin 81.5488Kg, stabilizer 0.3588Kg, paraffin wax 0.2392Kg, oxidized polyethylene wax 0.2024Kg, sarcosinate wax 0.3772Kg, auxiliary lubricant 0.1932Kg, antioxidant 0.1264Kg, UV stabilizer 0.1404Kg, processing aid 1.5364Kg, impact modifier 2.438Kg, titanium dioxide 0.276Kg, black powder 0.03Kg, blue powder 0.005704Kg, red powder 0.005704Kg, calcium stearate 0.3864Kg, nano calcium carbonate 4.0756Kg.

[0067] Chlorinated polyvinyl chloride resin is added sequentially to mixing tank 2; additive package: antioxidant, anti-UV agent, processing aid, impact modifier; lubricant: paraffin wax, oxidized polyethylene wax, saxoline wax, auxiliary lubricant; filler: calcium stearate, nano calcium carbonate; when the temperature reaches 70 degrees, stabilizer / organotin is added. The raw materials are put into mixing tank 2 for hot mixing and cold mixing. When the raw materials of chlorinated polyvinyl chloride are mixed, the electric slider is opened to drive multiple moving plates 25 to approach each other until they clamp the lead screw 26. The electric slider is opened to drive the drive wheel 27 to rotate. When the drive wheel 27 rotates, it meshes with the driven wheel 28, thereby causing the lead screw 26 to rotate, thus stirring the raw materials in mixing tank 2.

[0068] When the raw materials in the mixing tank 2 are agitated in different ranges, the screw 26 rotates, causing the inner ring 260 to rotate repeatedly on the upper part of the screw 26, thus producing up-and-down movement. When the inner ring 260 moves up and down, it simultaneously drives the rotating ring 261 to move up and down. When the rotating ring 261 moves up and down, it causes the angle between the first folding plate 263 and the second folding plate 264 to change, thereby continuously agitating the chlorinated polyvinyl chloride raw materials in the mixing tank 2. At the same time, when the screw 26 rotates, the first folding plate 263 and the second folding plate 264 push the slide 268, which causes the scraper 269 to contact the inside of the mixing tank 2, and then the rotation of the screw 26 stops. Then, manually rotating the drum ring 23 makes it easier to scrape off the raw materials on the inner wall of the mixing tank 2, thus facilitating the cleaning operation of the inner wall of the mixing tank 2.

[0069] When the mixing barrel 2 is shaken in the opposite direction by the internal stirring unit, the hydraulic cylinder 34 is raised until the extrusion ball 37 contacts the semi-circular sleeve 21, and then the mixing barrel 2 tilts to one side. Subsequently, the electric slider is opened to drive the extrusion ball 37 to shake in the circumferential direction within the guide rail 36. At this time, multiple first support rods 32 and second support rods 33 cooperate to work according to the tilt direction of the mixing barrel 2, thereby realizing the shaking and stirring operation of the outside of the mixing barrel 2, and realizing the opposite direction shaking of the outside of the mixing barrel 2 by the internal stirring unit.

[0070] When the raw materials of chlorinated polyvinyl chloride are mixed and made into a pressure pipe, the placement frame 41 is moved to be aligned and fitted with the extruder 29. Then the extruder 29 is turned on to extrude the pressure pipe. Next, multiple C-shaped plates 425 are used to clamp one side wall of the pipe in a circumferential manner. Then the first motor 413 is turned on to make two rotating wheels 412 rotate in coordination with the extruder 29. When the rotating wheels 412 rotate, the moving frame 42 slides on the guide rod 415 through two rack plates 422, thereby causing the front plate 424 to move with one end of the pressure pipe. This cooperates with the extruder 29 to extrude the pressure pipe without affecting the continuous forward movement of the pressure pipe during extrusion.

[0071] The extension and retraction of the electric push rod 433 facilitates the lifting and lowering of the connecting plate 432 as a whole. When the connecting plate 432 is lifted and lowered, the distance between the outer frame 434 and the support plate 437 is adjusted, thereby controlling the elastic force range of the spring set between the support plate 437 and the outer frame 434. The spring is also used to detect the lifting and resetting of the support plate 437 after the detection unit 5 cancels the impact on the pressure pipe, thereby repeatedly striking the lower part of the pressure pipe.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A chlorinated polyvinyl chloride (PVC) mixing equipment for pressure pipelines, characterized in that, The mixing equipment includes a base (1), and a mixing tank (2) is provided on one side of the upper end face of the base (1). The mixing tank (2) is used to mix chlorinated polyvinyl chloride, a raw material for making pressure pipelines. A support column (20) is provided in the middle of the lower end face of the mixing tank (2) and is fixedly connected to the base (1). The upper part of the support column (20) is spherical and rotatably connected to the bottom of the mixing tank (2). A shaking unit (3) is installed between the outside of the mixing tank (2) and the base (1). An internal stirring unit is placed on the outside of the upper end face of the mixing tank (2). The lower part of the stirring unit is placed inside the mixing barrel (2), and the stirring direction of the inner stirring unit is opposite to the shaking direction of the shaking unit (3); an extruder (29) communicating with the interior is installed on one side of the lower part of the mixing barrel (2), and a support unit (4) is placed on the other side of the upper end face of the base (1). The support unit (4) is used to support the pressure pipe extruded by the extruder (29). A detection unit (5) is fixedly installed on one side of the support unit (4). The detection unit (5) is used to tap the formed pressure pipe to detect its strength. The hosting unit (4) includes a placement rack (41), the middle of which is arc-shaped. Fixing members (411) are fixedly installed on both sides of the lower end face of the placement rack (41). A rotating wheel (412) is rotatably installed in the middle of the fixing member (411). A first motor (413) is fixedly installed on one side of the fixing member (411). A synchronizing rod (414) is fixedly installed at the output end of the first motor (413). The synchronizing rod (414) passes through and slides between the two fixing members (411). The fixing members (411) are fixedly connected to the rotating wheels (412) on both sides. Guide rods (415) are fixedly installed on the upper part of both sides of the placement rack (41). A movable frame (42) is slidably mounted on the guide rod (415). The upper end face of the movable frame (42) is arc-shaped in the middle. Lower plates (421) are fixedly mounted on both sides of the lower end face of the movable frame (42). A rack plate (422) is fixedly mounted on the lower end face of the lower plate (421). The rack plate (422) is located below the rotating wheel (412) and meshes with it. A threaded rod (423) is rotatably mounted on one side of the middle of the movable frame (42). A front plate (424) is rotatably mounted on the threaded rod (423). The middle of the front plate (424) is round-hole shaped. The lower part of the front plate (424) is long plate shaped and slidably connected to the movable frame (42). A U-shaped plate (425) is provided on one side in a circumferential direction. The U-shaped plate (425) is slidably connected to the front plate (424) by an electric slider. A pull rod (426) is slidably installed in the middle of one side of the U-shaped plate (425). An arc plate (427) that is slidably connected to the U-shaped plate (425) is fixedly installed at one end of the pull rod (426). A spring is installed between the arc plate (427) and the U-shaped plate (425). A middle frame (43) is provided between the moving frame (42) and the placement frame (41). The two sides of the middle frame (43) are slidably connected to the guide rods (415) on both sides. Vertical grooves (431) are opened on both sides of the middle frame (43). 1) A connecting plate (432) is slidably installed inside. An electric push rod (433) is installed between the upper part of both sides of the connecting plate (432) and the middle frame (43). An outer frame (434) is fixedly installed in the middle of the connecting plate (432). Vertical buffer grooves (435) are opened on both sides of the outer frame (434). T-shaped plates (436) are slidably installed in the buffer grooves (435) on both sides. A support plate (437) is installed between the T-shaped plates (436) on both sides. The middle part of the upper end face of the support plate (437) is arc-shaped. Multiple springs are fixedly installed on the lower end face of the support plate (437), and the end of the spring away from the support plate (437) is connected to the outer frame (434). The mixing barrel (2) is fixedly installed with a semi-circular sleeve (21) at the bottom and a insertion piece (22) is fixedly installed on the lower end face of the inner cavity of the mixing barrel (2). The stirring unit includes a barrel ring (23) placed on the top of the mixing barrel (2). A bracket (24) with a central hole is fixedly installed in the middle of the barrel ring (23). Multiple movable plates (25) are arranged circumferentially on the upper end face of the bracket (24). The movable plates (25) and the bracket (24) are slidably connected by an electric slider. The multiple movable plates (25) are arc-shaped on one side. A lead screw (26) is provided in the middle of the bracket (24). A drive wheel (27) is slidably installed on the upper end face of one side of the movable plate (25) by an electric slider. A driven wheel (28) is meshed on one side of the drive wheel (27) and fixedly connected to the top of the lead screw (26). An inner ring (260) is rotatably mounted on the upper part of the lead screw (26), and a rotating ring (261) is rotatably mounted on the outside of the inner ring (260). A bottom ring (262) is fixedly mounted on the lower part of the lead screw (26). A first folding plate (263) is circumferentially hinged to the outer side of the rotating ring (261), and a second folding plate (264) is circumferentially hinged to the outer side of the bottom ring (262). The first folding plate (263) and the second folding plate (264) are hinged together. A center block (2) is fixedly mounted in the middle of the lead screw (26). 65) Multiple sets of corresponding guide plates (266) are fixedly installed around the center block (265). Each set of guide plates (266) has a corresponding slide groove (267) on one side. A slide frame (268) is slidably installed in the slide groove (267) on each set of guide plates (266). Springs are provided on both sides of the slide frame (268), and the springs on both sides are respectively connected to the corresponding guide plates (266) on both sides. A scraper (269) is fixedly installed on one side of the slide frame (268).

2. The chlorinated polyvinyl chloride mixing equipment for pressure pipelines according to claim 1, characterized in that, The shaking unit (3) includes an outer ring (31) fixedly connected to the mixing tank (2). The lower end face of the outer ring (31) is provided with a first support rod (32). One side of the first support rod (32) is spherical and rotatably connected to the lower part of the outer ring (31). The other side of the first support rod (32) is hinged with a second support rod (33). The side of the second support rod (33) away from the first support rod (32) is spherical and rotatably connected to the base (1). The lower part of the mixing tank (2) is provided with a hydraulic cylinder (34) fixedly connected to the base (1). The extension and retraction ends of multiple hydraulic cylinders (34) are jointly fixedly installed with a lifting ring (35). The upper end face of the lifting ring (35) is provided with a circumferential guide rail (36). The guide rail (36) is rotatably installed with a squeeze ball (37) through an electric slider.

3. The chlorinated polyvinyl chloride mixing equipment for pressure pipelines according to claim 1, characterized in that, The detection unit (5) includes a vertical plate (51), which is fixedly connected to a connecting plate (432). A crossbar (52) is fixedly installed in the middle of the vertical plate (51). A collar (53) is rotatably installed on one side of the crossbar (52). A torsion spring is provided between the collar (53) and the crossbar (52). A striking plate (54) is fixedly installed on one side of the collar (53). A second motor (55) is fixedly installed on the upper part of one side of the vertical plate (51). The output end of the second motor (55) A pressing wheel (56) is fixedly installed. A lifting groove (57) is provided below the pressing wheel (56) on the upright plate (51). An L-shaped plate (58) is slidably installed in the lifting groove (57). A spring is installed between the lower end face of the L-shaped plate (58) and the lifting groove (57). A protrusion (59) is fixedly installed on the upper end face of the L-shaped plate (58). A pressing rod (590) is fixedly installed on the lower end face of the L-shaped plate (58) and the pressing rod (590) is located above the striking plate (54).

4. The mixing process of a chlorinated polyvinyl chloride mixing equipment for pressure pipelines according to claim 3, characterized in that, The chlorinated polyvinyl chloride blending process includes the following steps: S1: Weighing and Batching: Weigh and batch the chlorinated polyvinyl chloride mixture, consisting of chlorinated polyvinyl chloride resin, organotin heat stabilizer, impact modifier, lubricant, processing aid, filler, and colorant, and then add them to the mixing tank (2) for hot and cold mixing; S2: Mixing: The chlorinated polyvinyl chloride mixture in the mixing tank (2) is continuously stirred by the internal stirring unit, and the mixing tank (2) is shaken by the shaking unit (3); S3: Discharge and sieve: The chlorinated polyvinyl chloride mixture after cold mixing is discharged and sieved and finally extruded by the extruder (29).

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