A corrosion-resistant CPVC chemical pipe forming process and equipment

Abstract

The present invention relates to the technical field of high molecular polymer molding, and specifically to a corrosion-resistant CPVC chemical pipe molding process and equipment thereof. The molding equipment of the present invention comprises a base and a bracket one, wherein an extruder is fixedly installed on the top of the bracket one, wherein the feed end and the discharge end of the extruder are respectively connected to a hopper and an extrusion head, wherein the discharge end of the extrusion head is provided with a cooling cylinder for simultaneously cooling the inner and outer walls of the extruded pipe, and the discharge end of the cooling cylinder is provided with a fixed-length slitting mechanism for cutting the cooled pipe into a fixed length; a water tank is fixedly provided on the top of the base, and the cooling cylinder and the fixed-length slitting mechanism are both mounted on the top of the water tank. The molding process of the present invention comprises mixing; plasticizing and extruding; cooling and shaping; fixed-length cutting; and unloading. The present invention can realize simultaneous cooling of the inner and outer sides of the extruded pipe by the cooling cylinder, and measure and cut the cooled and shaped pipe into a fixed length by the fixed-length slitting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of high molecular polymer molding, in particular to a corrosion-resistant CPVC chemical pipeline molding process and equipment thereof. Background Art

[0002] Chlorinated polyvinyl chloride (CPVC), also known as perchloroethylene, is a product of polyvinyl chloride (PVC) that has been further chlorinated. Because CPVC has a higher chlorine content than PVC, its physical and mechanical properties, particularly its weathering resistance, aging resistance, corrosion resistance, high-temperature resistance, deformability, solubility, and flame retardancy and self-extinguishing properties, are significantly improved. It has been a rapidly developing new plastic material in recent years and is widely used in construction, chemical engineering, metallurgy, shipbuilding, electrical appliances, textiles, and other fields.

[0003] The prior art discloses a Chinese patent with publication number CN 211843094 U: a plastic tube forming device, and discloses a cooling mechanism, which cools the outside of the molded plastic tube by absorbing heat through water atomization. At the same time, rotating fan blades are used to accelerate the heat dissipation inside the inner molding cylinder, thereby promoting the cooling speed of the inside of the molded plastic tube.

[0004] However, the above-mentioned existing technology still has certain defects, that is, during use, the heat is dissipated inside and outside the molded plastic tube by atomization heat absorption and accelerated air flow heat dissipation. The two different cooling methods can easily cause a large temperature difference between the inside and outside of the plastic tube and cause quality problems. Summary of the Invention

[0005] The object of the present invention is to provide a corrosion-resistant CPVC chemical pipe forming process and equipment thereof to solve the problems raised in the above background technology.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A corrosion-resistant CPVC chemical pipe forming device comprises a base, a bracket first being fixedly mounted on the top of the base, an extruder being fixedly mounted on the top of the bracket first, the feed end and the discharge end of the extruder being connected to a hopper and an extrusion head respectively, the discharge end of the extrusion head being provided with a cooling cylinder for simultaneously cooling the inner and outer walls of the extruded pipe, and the discharge end of the cooling cylinder being provided with a fixed-length slitting mechanism for cutting the cooled pipe into a fixed length;

[0008] A water tank is fixed on the top of the base, and a cooling cylinder and a fixed-length slitting mechanism are both mounted on the top of the water tank. A discharge mechanism for assisting in unloading the cut pipes is provided at the position of the fixed-length slitting mechanism on the top of the water tank;

[0009] Support plates are fixedly provided on both sides of the inner cavity of the water tank, and a filter box is arranged between the top surfaces of the two support plates.

[0010] In a preferred embodiment, the extrusion head includes a ring sleeve that is detachably mounted on the end of the extruder by a locking bolt, a column head is provided inside the ring sleeve and is concentrically arranged with the ring sleeve, and a plurality of L-shaped connecting rods evenly distributed in a ring shape are fixedly connected between the outer side of the column head close to the extruder and the inner side of the ring sleeve.

[0011] In a preferred embodiment, the cooling cylinder includes a column cylinder fixedly connected to one end of the column head and a sleeve movably sleeved on the outside of the column cylinder, a plurality of brackets 2 are fixedly connected between the outside of the sleeve and the outside of the water tank, a plurality of annular grooves equidistantly distributed are opened on the outside of the column cylinder and the inside of the sleeve, and the annular grooves on the outside of the column cylinder and the inside of the sleeve are staggered;

[0012] The outer side of the column and the top inner side of the sleeve are both provided with straight grooves that pass through multiple annular grooves, and the ends of the two straight grooves away from the extrusion head respectively pass through the discharge ends of the column and the sleeve, and water retaining bars are fixedly provided at the positions between the two adjacent annular grooves inside the straight grooves. A water pump is fixedly installed on the inside of the water tank, and the liquid outlet end of the water pump is connected to a water supply pipe. The two water outlet ends of the water supply pipe are respectively connected to the annular grooves on the column and the sleeve.

[0013] In a preferred embodiment, the fixed-length slitting mechanism consists of a measuring part and a slitting part, the slitting part includes a ring plate sleeved on the outside of the sleeve, a plurality of annularly evenly distributed fan ring plates are fixedly connected between the inner side of the ring plate and the outer side of the sleeve, and a plurality of annularly evenly distributed L-shaped plates are slidably connected to the outer side of the ring plate;

[0014] A ring frame is provided at one end of the ring plate, and a plurality of gear blocks 1 uniformly distributed in an annular shape are fixedly provided on one side of the ring frame. A mounting groove is provided on one of the fan ring plates, and a motor 1 is fixedly installed inside the mounting groove. The end of the output shaft of the motor 1 is fixedly connected to a gear 1 meshing with the gear block 1. A T-shaped ring groove is provided on the outside of the ring frame, and the end of each L-shaped plate is fixedly connected to a T-shaped arc block slidably installed inside the T-shaped ring groove.

[0015] Two L-shaped blocks are fixedly provided on the other side of the ring frame, and a U-shaped bracket is slidably installed between the two L-shaped blocks. Motor 2 is fixedly installed on the inner side of the U-shaped bracket, and a fixed sleeve is provided on the end of the output shaft of motor 2. An ear block corresponding to the L-shaped block is fixedly provided on the outer side of the U-shaped bracket. The bottoms of the two ear blocks are fixedly connected to a guide rod that movably passes through the corresponding L-shaped block, and the outer side of the guide rod is provided with a spring 2 that fixedly connects the corresponding ear block and the L-shaped block.

[0016] In a preferred embodiment, the measuring portion includes a frame fixed to the top of the water tank and two side frames, a straight rod 1 is movably provided at positions corresponding to the two side frames on the frame, a ring block is fixedly connected between the ends of the two straight rods 1 away from the side frames, and a disc is fixedly provided at the ends of the two straight rods 1 close to the side frames, and a spring 1 is fixedly connected between the disc and the corresponding side frame;

[0017] A second straight rod is fixed to the top of the side of the ring block facing the frame, and a swing plate is rotatably mounted on the inner side of the frame via a rotating rod. The end of the second straight rod contacts the surface of the swing plate. An L-shaped limiting bar is fixed to the middle of the top of the side of the frame away from the ring block, and a notch is opened in the middle of the bottom of the swing plate.

[0018] An L-shaped ring strip is fixed on one end of the inner side of the ring block, and right-angle grooves are opened at both ends of the U-shaped bracket. The outer sides of both ends of the U-shaped bracket and the inner side of the ring block are set as inclined surfaces, and a thin film pressure sensor is installed on the inner side of the right-angle groove.

[0019] In a preferred embodiment, the unloading mechanism includes a collar movably sleeved on the outside of two straight rods, two retaining rings for limiting the collars at corresponding positions are fixedly sleeved on the outside of each straight rod, two sets of shift plates are sleeved on the outside of each collar, and a gear 2 is fixedly sleeved on one end of the outside of each collar, two motors 3 are fixedly installed on the outside of the ring block, and the ends of the output shafts of the two motors 3 are fixedly connected to gears 3 meshing with the corresponding gear 2;

[0020] The unloading mechanism also includes a bracket 1 and a bracket 3 respectively fixed on both sides of the top of the water tank, an inclined plate 1 is fixed on the inner side of the bracket 1, an arc plate is installed on the top end of the inner side of the bracket 3 through a rotating rod, the bottom end of the outer side of the arc plate is fixedly connected to an arc rod that movably passes through the bracket 3, and a spring 4 is provided on the outer side of the arc rod for fixedly connecting the bracket 3 and the arc plate.

[0021] In a preferred embodiment, a deceleration assembly is provided on the outer side of the bracket 1, and the deceleration assembly includes a bracket 2 fixed on the top of the water tank, the top of the bracket 2 is fixedly connected to the inclined plate 2, and a movable plate is installed on the inner side of the bracket 2 through a rotating rod, and a spring 3 is fixedly connected between one end of the movable plate and the inclined plate 2.

[0022] In a preferred embodiment, a feeding mechanism is provided at the top of the hopper, and the feeding mechanism includes a ring support 1 fixedly sleeved on the outside of the hopper, a bracket 3 fixedly connected between the bottom of the ring support 1 and the base, two vertical frames fixedly provided on the top of the ring support 1, a hollow ball is provided between the two vertical frames, a ring is movably sleeved in the middle of the outer side of the hollow ball, a feed pipe and a discharge pipe are connected to the outer side of the ring, and a material hole is opened on the surface of the hollow ball at a position corresponding to the ring;

[0023] A stirring frame 1 is rotatably installed on the inner side of the hollow ball through a rotating rod, and motors 4 are fixedly installed on the outer sides of the two vertical frames. The output shaft end of one of the motors 4 passes through the corresponding vertical frame and is fixedly connected to the hollow ball, and the output shaft end of the other motor 4 passes through the corresponding vertical frame and the hollow ball in sequence, and is fixedly connected to the corresponding end of the stirring frame 1.

[0024] In a preferred embodiment, the feeding mechanism further includes a gear ring fixed to the outside of the hollow ball and two limiting rings fixed to the inside of the hopper, a ring support 2 is movably provided between the two limiting rings, a plurality of tooth blocks 2 evenly distributed in an annular shape are fixed on the top of the ring support 2, and the gear ring is meshed with the tooth blocks 2;

[0025] A ring cover is rotatably installed on the inner side of the ring support 2 through a bearing, a stirring frame 2 is movably provided inside the hopper, a connecting rod is fixedly connected between the discharge pipe and the ring cover, an inclined rod is fixedly connected between the stirring frame 2 and the ring support 2, and a feeding screw is fixedly connected to the bottom end of the stirring frame 2.

[0026] The present invention also provides a process for producing corrosion-resistant CPVC chemical pipes using the above-mentioned corrosion-resistant CPVC chemical pipe forming equipment, which specifically includes the following operating steps:

[0027] S1. Mixing: The main material and auxiliary material for producing pipes are allowed to enter the hollow ball in a small amount and in a proportional manner under the continuous rotation of the hollow ball, and the main material and auxiliary material entering the hollow ball are fully mixed by a pair of stirring racks in the opposite direction of the rotation of the hollow ball;

[0028] S2, plasticizing and extruding: After mixing, put it into the hopper, and use the rotating stirring frame 2 to drive the feeding screw to transport the target raw materials in the hopper to the extruder for plasticizing and extrusion;

[0029] S3, cooling and shaping: the pipe extruded from the extruder is sent into the cooling cylinder for simultaneous cooling and shaping inside and outside;

[0030] S4, fixed-length cutting: Use the fixed-length cutting mechanism to measure and cut the cooled and shaped pipe to a fixed length;

[0031] S5. Unloading: The cut pipe is transported to the next process by the unloading mechanism, and the pipe is decelerated by the deceleration component during the sliding process of the pipe.

[0032] Beneficial effects of the present invention:

[0033] 1. The cooling cylinder of the present invention can form independent inner and outer cooling zones between the annular grooves on the cylinder and sleeve and the pipe. Water retaining strips are provided at positions between two adjacent annular grooves inside the straight grooves on the cylinder and sleeve, so that a one-way flow surround water cooling network is formed inside and outside the formed target pipe, thereby improving the real-time cooling effect of the cooling water flowing inside the water cooling network.

[0034] 2. The present invention adds a fixed-length slitting mechanism and a discharge mechanism at the end of the cooling cylinder. The fixed-length slitting mechanism can automatically realize the fixed-length circular cutting of the pipe after cooling and shaping, and cooperates with the discharge mechanism to automatically transport the cut pipe, ensuring the continuity of the target pipe production process;

[0035] 3. The design of the feeding mechanism of the present invention can not only realize the mixing of the main material and the auxiliary material of the target raw material by multiple small amounts to improve the mixing quality, but also allow the mixing process to be carried out simultaneously with the process of feeding the material into the extruder to ensure the continuity of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure of the extrusion head and the cooling cylinder of the present invention;

[0040] Figure 4 This invention Figure 3 lateral cross-section of

[0041] Figure 5 This invention Figure 3 A partial expansion diagram of

[0042] Figure 6 This is a schematic structural diagram of the fixed-length slitting mechanism of the present invention;

[0043] Figure 7 It is a schematic structural diagram of the measuring portion of the fixed-length slitting mechanism of the present invention;

[0044] Figure 8 This is a schematic structural diagram of the slitting portion of the fixed-length slitting mechanism of the present invention from a first perspective;

[0045] Figure 9 This is a schematic structural diagram of the slitting portion of the fixed-length slitting mechanism of the present invention from a second viewing angle;

[0046] Figure 10 This invention Figure 6 A partial cross-sectional view of

[0047] Figure 11 It is a partial structural diagram of the unloading mechanism of the present invention;

[0048] Figure 12 It is a schematic structural diagram of the deceleration assembly of the present invention;

[0049] Figure 13 It is a schematic diagram of the overall structure of the feeding mechanism of the present invention;

[0050] Figure 14 This invention Figure 13 Side view of .

[0051] The accompanying drawings are marked as follows: 1. base; 2. bracket 1; 3. extruder; 4. hopper; 5. extrusion head; 51. ring sleeve; 52. column head; 53. L-shaped connecting rod; 6. cooling cylinder; 61. column cylinder; 62. sleeve; 63. annular groove; 64. straight groove; 65. water retaining bar; 66. bracket 2; 67. water supply pipe; 68. water pump; 7. fixed-length cutting mechanism; 71. side frame; 72. frame; 73. straight Rod 1; 74, ring block; 75, straight rod 2; 76, swing plate; 77, limit bar; 78, disc; 79, spring 1; 710, notch; 711, L-shaped ring bar; 712, ring plate; 713, fan ring plate; 714, ring frame; 715, L-shaped plate; 716, T-shaped ring groove; 717, T-shaped arc block; 718, gear block 1; 719, gear 1; 720, L-shaped seat block; 721, U-shaped bracket; 72 2. Circular saw blade; 723. Ear block; 724. Spring 2; 725. Guide rod; 8. Unloading mechanism; 81. Collar; 82. Paddle plate; 83. Gear 2; 84. Gear 3; 85. Bracket 1; 86. Inclined plate 1; 87. Speed ​​reduction assembly; 871. Bracket 2; 872. Inclined plate 2; 873. Movable plate; 874. Spring 3; 88. Bracket 3; 89. Arc plate; 810. Arc rod; 811. Spring Four; 9. Feeding mechanism; 91. Ring support one; 92. Vertical frame; 93. Hollow ball; 94. Ring; 95. Feed pipe; 96. Discharge pipe; 97. Mixing frame one; 98. Gear ring; 99. Ring support two; 910. Gear block two; 911. Limiting ring; 912. Ring cover; 913. Connecting rod; 914. Mixing frame two; 915. Inclined rod; 10. Water tank; 11. Bracket three; 12. Support plate; 13. Filter box. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0053] The CPVC of the present invention belongs to a type of chemical material industry. Chemical pipes made from it are generally used as conveying media in the chemical industry. The molding equipment is a type of equipment used for producing CPVC chemical pipes, integrating cooling, shaping and fixed-length cutting to improve the continuity of the production process.

[0054] Example 1

[0055] Refer to the instruction manual Figure 1-2 A corrosion-resistant CPVC chemical pipe forming device according to an embodiment of the present invention includes a base 1, a bracket 2 is fixedly installed on the top of the base 1, an extruder 3 is fixedly installed on the top of the bracket 2, the feed end and the discharge end of the extruder 3 are respectively connected to a hopper 4 and an extrusion head 5, the discharge end of the extrusion head 5 is provided with a cooling cylinder 6 for simultaneously cooling the inner and outer walls of the extruded pipe, and the discharge end of the cooling cylinder 6 is provided with a fixed-length slitting mechanism 7 for cutting the cooled pipe into a fixed length;

[0056] A water tank 10 is fixed on the top of the base 1. The cooling cylinder 6 and the fixed-length slitting mechanism 7 are both mounted on the top of the water tank 10. A discharge mechanism 8 for assisting in unloading the cut pipes is provided at the position of the fixed-length slitting mechanism 7 on the top of the water tank 10.

[0057] Support plates 12 are fixed on both sides of the inner cavity of the water tank 10, and a filter box 13 is arranged between the top surfaces of the two support plates 12, wherein the liquid outlet end of the cooling cylinder 6 and the liquid outlet end of the cooling and shaping pipe are always included in the open area of ​​the filter box 13, and the position prevents the filter box 13 from shifting under the impact of the fluid. The filter box 13 and the support plate 12 can be limited by methods including but not limited to bolt fixing or magnetic suction (not specifically drawn in the drawings, and can be selected according to actual production).

[0058] It should be noted that the present invention accelerates the cooling speed by utilizing the cooling cylinder 6 to simultaneously cool the inside and outside of the pipe extruded by the extruder 3. At the same time, the fixed-length slitting mechanism 7 is utilized to measure and cut the cooled and shaped pipe to a fixed length, and the cut pipe is transported in conjunction with the unloading mechanism 8, thereby ensuring the continuity of the target pipe production process.

[0059] Specifically, if Figure 1 and Figure 3-4As shown, the extrusion head 5 includes a ring sleeve 51 which is detachably mounted on the end of the extruder 3 by a locking bolt, and a column head 52 is provided inside the ring sleeve 51 and is concentrically arranged with the ring sleeve 51. In order to reduce the resistance of the column head 52 to the fluid during extrusion, the end of the column head 52 close to the extruder 3 can be set to a hemispherical structure, and a plurality of L-shaped connecting rods 53 uniformly distributed in a ring shape are fixedly connected between the outer side of the end of the column head 52 close to the extruder 3 and the inner side of the ring sleeve 51.

[0060] It should be noted that the column head 52 is fixed inside the ring sleeve 51 by a plurality of L-shaped connecting rods 53 evenly distributed in a ring shape, and an annular material cavity is formed for forming the target pipe. The extruded molten material is pre-formed by using the annular material cavity, and then directly sent into the cooling cylinder 6 for cooling and shaping. Among them, the detachable installation design of the extrusion head 5 can facilitate the replacement of the extrusion head 5, which is convenient for later operation and maintenance and rapid replacement according to production needs.

[0061] Specifically, if Figure 1-5 As shown, the cooling cylinder 6 includes a cylinder 61 fixedly connected to one end of the column head 52 and a sleeve 62 movably sleeved on the outside of the cylinder 61. A plurality of brackets 66 are fixedly connected between the outer side of the sleeve 62 and the outer side of the water tank 10, so that an annular channel with the same size as the annular cavity of the target pipe to be formed (here referring to the inner and outer diameters of the annular cavity) is formed between the cylinder 61 and the sleeve 62. A plurality of annular grooves 63 with equal distances are opened on the outer side of the cylinder 61 and the inner side of the sleeve 62, and the annular grooves 63 on the outer side of the cylinder 61 and the inner side of the sleeve 62 are staggered.

[0062] The outer side of the cylinder 61 and the top of the inner side of the sleeve 62 are both provided with straight grooves 64 that pass through multiple annular grooves 63, and the two straight grooves 64 are respectively passed through the discharge ends of the cylinder 61 and the sleeve 62 at one end away from the extruder head 5. The inner portion of the straight groove 64 is fixed with a water retaining bar 65 at the position between the two adjacent annular grooves 63, so that a one-way flow surround-type water cooling network can be formed inside and outside the formed target pipe to ensure the real-time cooling effect of the cooling water inside the water cooling network. A water pump 68 is fixedly installed on the inner side of the water tank 10, and the liquid outlet end of the water pump 68 is connected to the outlet end of the water tank 10. There is a water supply pipe 67, and the two water outlet ends of the water supply pipe 67 are respectively connected to the column 61 and the annular groove 63 on the sleeve 62, wherein the L-shaped connecting rod 53 located at the lowest point inside the annular sleeve 51 is set to a hollow structure, and the water supply pipe 67 connected to the annular groove 63 on the column 61 passes through the L-shaped connecting rod 53 and penetrates the column head 52. Since the water supply pipe in this section will be affected by the temperature of the molten material, a rock wool pipe is selected to ensure that the water temperature inside the water supply pipe 67 is not affected, thereby ensuring the cooling effect inside the formed pipe.

[0063] It should be noted that before the extruded pipe enters the cooling cylinder 6, the water pump 68 is started to pump the cooling water in the water tank 10 into the cooling cylinder 6 continuously. Since the extruded pipe has not yet entered the cooling area during the initial water supply, the water pumped into the cooling cylinder 6 will be directly discharged into the water tank 10 through the annular groove between the column 61 and the sleeve 62. After the extruded pipe enters the cooling area, the pipe will separate the annular groove 63 on the column 61 and the sleeve 62, so that the annular groove 63 on the column 61 and the sleeve 62 and the pipe form independent inner and outer cooling zones, and, Since water retaining strips 65 are provided at the positions between the two adjacent annular grooves 63 inside the straight grooves 64 on the column 61 and the sleeve 62, a unidirectional flow surround water cooling network can be formed inside and outside the formed target pipe. That is, after the cooling water enters the corresponding annular groove 63, it will gradually fill the first annular groove 63, and then enter the next annular groove 63 through the corresponding straight groove 64, and fill the annular groove 63 in a unidirectional flow manner along the corresponding annular groove 63. Similarly, the other annular grooves 63 are filled in turn. In this way, the real-time cooling effect of the cooling water flowing inside the water cooling network can be effectively ensured.

[0064] Specifically, if Figure 1 and Figure 6-10 As shown, the fixed-length slitting mechanism 7 consists of a measuring part and a slitting part. The slitting part includes a ring plate 712 sleeved on the outside of the sleeve 62. A plurality of fan ring plates 713 are fixedly connected between the inner side of the ring plate 712 and the outer side of the sleeve 62. A plurality of L-shaped plates 715 are slidably connected to the outer side of the ring plate 712. The sliding connection between the L-shaped plate 715 and the ring plate 712 is that the L-shaped plate 715 can slide a distance along the axial direction of the ring plate 712 (reference Figure 10 );

[0065] A ring frame 714 is provided at one end of the ring plate 712, and a plurality of gear blocks 718 uniformly distributed in an annular shape are fixedly provided on one side of the ring frame 714. A mounting groove is provided on one of the fan ring plates 713, and a motor 1 is fixedly installed inside the mounting groove. The end of the output shaft of the motor 1 is fixedly connected to a gear 1 719 that meshes with the gear block 1 718. A T-shaped ring groove 716 is provided on the outer side of the ring frame 714, and the end of each L-shaped plate 715 is fixedly connected to a T-shaped arc block 717 that is slidably installed inside the T-shaped ring groove 716. The T-shaped arc block 717 can be used to limit the ring frame 714 so that the rotating gear 1 719 can drive the ring frame 714 to perform circular motion. Moreover, when the L-shaped plate 715 slides a certain distance along the axial direction of the ring plate 712, the gear block 1 718 and the gear 1 719 always remain in a meshing state.

[0066] Two L-shaped blocks 720 are fixedly provided on the other side of the ring frame 714. A U-shaped bracket 721 is slidably installed between the two L-shaped blocks 720. A second motor is fixedly installed inside the U-shaped bracket 721. A circular saw blade 722 is fixedly provided on the end of the output shaft of the second motor. The circular saw blade 722 is located outside the area between the two L-shaped blocks 720, and the horizontal axial section of the circular saw blade 722 is aligned with the lower end surface of the L-shaped block 720 (reference Figure 9 ) is flush, so that the circular saw blade 722 will not be blocked by the L-shaped seat block 720 during the circular cutting of the pipe. An ear block 723 corresponding to the L-shaped seat block 720 is fixedly provided on the outside of the U-shaped bracket 721. The bottoms of the two ear blocks 723 are fixedly connected to a guide rod 725 that movably penetrates the corresponding L-shaped seat block 720. The outer side of the guide rod 725 is provided with a second spring 724 that fixedly connects the corresponding ear block 723 and the L-shaped seat block 720. When the second spring 724 is in a natural state, the guide rod 725 still maintains a state of penetrating the corresponding L-shaped seat block 720, and in this state, the low point of the circular saw blade 722 (i.e., the point closest to the pipe surface) is set apart from the outer side of the pipe.

[0067] The measuring portion includes a frame 72 fixed to the top of the water tank 10 and two side frames 71. A straight rod 73 is movably provided at positions on the frame 72 corresponding to the two side frames 71. A ring block 74 is fixedly connected between the ends of the two straight rods 73 away from the side frames 71. A disc 78 is fixedly provided at the ends of the two straight rods 73 close to the side frames 71. A spring 79 is fixedly connected between the disc 78 and the corresponding side frame 71.

[0068] A second straight rod 75 is fixed to the top of the side of the ring block 74 facing the frame 72, and a swing plate 76 is rotatably installed on the inner side of the frame 72 through a rotating rod. The end of the second straight rod 75 contacts the surface of the swing plate 76, and an L-shaped limiting bar 77 is fixedly connected to the top middle part of the side of the frame 72 away from the ring block 74. When the spring 1 79 is in the natural state, the second straight rod 75 just pushes the upper end of the swing plate 76 to the state of contact with the inner side of the limiting bar 77 of the L-shaped structure. A notch 710 is opened in the middle part of the bottom of the swing plate 76, and the groove width of the notch 710 is smaller than the inner diameter of the target pipe, so that when the pipe after cooling and shaping pushes the swing plate 76, the cooling water discharged from the internal cooling surround water cooling network can pass through the notch 710 and flow back to the inside of the water tank 10;

[0069] An L-shaped ring strip 711 is fixed to one end of the inner side of the ring block 74, and right-angle grooves are provided at both ends of the U-shaped bracket 721. The outer sides of both ends of the U-shaped bracket 721 and the inner side of the ring block 74 are set as inclined surfaces, and a thin film pressure sensor is installed on the inner side of the right-angle groove. When the spring 1 79 is in the natural state, the ring block 74 and the U-shaped bracket 721 are set apart.

[0070] It should be noted that in the process of cutting the cooled and shaped pipe to a fixed length, as the shaped pipe gradually extends out of the cooling cylinder 6, the cooling water discharged by the internal cooling surround water cooling network is discharged from the end of the pipe and flows back into the water tank 10, while the cooling water discharged by the external cooling surround water cooling network is directly discharged from the end of the cooling cylinder 6 (i.e., the end away from the extrusion head 5) and flows back into the water tank 10. When the end of the pipe extending out of the cooling cylinder 6 contacts the lower end of the swing plate 76 in the initial state, as the pipe continues to extend, the end of the pipe will gradually squeeze the lower end of the swing plate 76, causing the swing plate 76 to deflect with the rotating rod at its position as the central axis. The upper end of the deflected swing plate 76 will gradually squeeze the straight rod 2 75, causing the straight rod 2 75 to push the ring block 74 toward the cooling cylinder 6. The ring block 74, which moves under the push of the straight rod 2 75, will synchronously pull the two straight rods 1 73 to move and stretch the spring 1 79 at the corresponding position.

[0071] Moreover, as the swing plate 76 deflects, the inclined surface of the inner side of the ring block 74 approaching the cooling cylinder 6 will contact the inclined surface on the U-shaped bracket 721, and as the ring block 74 continues to approach, the ring block 74 will squeeze the U-shaped bracket 721, allowing the U-shaped bracket 721 to move vertically downward under the restriction of the guide rod 725, and use the ear block 723 moving downward synchronously to compress the spring 2 724 at the corresponding position. As the U-shaped bracket 721 gradually moves downward, the rotating circular saw blade 722 will gradually approach the pipe and cut the pipe. When the L-shaped ring strip 711 is fully engaged with the right-angled groove at the top of the U-shaped bracket 721, the circular saw blade 722 can completely cut the thickness of the pipe. At this time, the engagement of the L-shaped ring strip 711 on the inner side of the ring block 74 with the right-angled groove at the top of the U-shaped bracket 721 will trigger the film pressure sensor. After receiving the feedback signal from the film pressure sensor, the control end will control the motor 1 to drive the gear 1 719 to rotate, and use the rotating gear 1 719 to drive the ring frame 714 to perform a circular motion, thereby using the circular saw blade 722 that rotates synchronously with the ring frame 714 to complete the circular cutting of the pipe.

[0072] During the process of cutting the thickness of the pipe, after the rotating circular saw blade 722 contacts the pipe, as the ring block 74 continues to advance, the circular saw blade 722 will gradually cut deeper. At this time, the advancement of the pipe drives the ring frame 714 to advance a certain distance synchronously to ensure a neat incision.

[0073] Furthermore, a detachable and fixed grinding ring (such as fixed by bolts, but note that it needs to be coplanar with the surface of the circular saw blade 722 after fixation) can be added to the outer edge positions on both sides of the circular saw blade 722, so that the incision can be polished during the circular cutting process to make the cut surface smooth and free of burrs. This method is not specifically drawn in the accompanying drawings and can be selected and applied according to actual production needs.

[0074] Specifically, if Figure 1 、 Figure 7 and Figure 11 As shown, the unloading mechanism 8 includes a collar 81 movably sleeved on the outside of the two straight rods 73, and two retaining rings for limiting the corresponding position collar 81 are fixedly sleeved on the outside of each straight rod 73. Two sets of shift plates 82 are sleeved on the outside of each collar 81, and a gear 2 83 is fixedly sleeved on one end of the outside of each collar 81. Two motors 3 are fixedly installed on the outside of the ring block 74, and the output shaft ends of the two motors 3 are fixedly connected to a gear 3 84 meshing with the corresponding gear 2 83. The setting of the retaining ring can make the gear 2 83 on the collar 81 always keep the gear 3 84 meshing with the corresponding gear 2 83.

[0075] The unloading mechanism 8 also includes a bracket 1 85 and a bracket 3 88 respectively fixed on both sides of the top of the water tank 10. The inner side of the bracket 1 85 is fixed with an inclined plate 1 86. The inner top of the bracket 3 88 is rotatably mounted with an arc plate 89. The outer bottom end of the arc plate 89 is fixedly connected with an arc rod 810 that movably passes through the bracket 3 88. The outer side of the arc rod 810 is provided with a spring 4 811 that is fixedly connected to the bracket 3 88 and the arc plate 89. The setting of the spring 4 811 can achieve buffering of the falling pipe, and when the spring 4 811 is in the initial state, the arc plate 89 is under the action of the spring 4 811, and the bottom end of the arc plate 89 is in a state of being ... Figure 11 The staggered state shown can prevent the cut pipe from sliding off along the inclined plate 86 immediately after it falls to the area when the paddle 82 is moved, so that the cooling water remaining inside the pipe can flow back to the water tank 10, reducing the waste of cooling water.

[0076] It should be noted that when the circular saw blade 722, which rotates synchronously with the ring frame 714, completes the ring cutting of the pipe, the control end will control the motor three to drive the corresponding gear three 84 to rotate, and use the rotating gear three 84 to drive the two gears two 83 to drive the ring 81 on which the paddle plate 82 is installed to rotate in opposite directions, so that the paddle plate 82 is used to paddle the cut pipe downward, allowing the pipe to fall to the area between the arc plate 89 in the initial state and the inclined plate 1 86. Among them, when the pipe falls, the upper end of the arc plate 89 will deflect upward with the rotating rod at its position as the center axis, but will be blocked by the paddle plate 82 on the corresponding side, so that the pipe will not fall by itself. The staggered area between the bottom end of the arc plate 89 and the top end of the inclined plate 86 leaks out, and then, in the next round of pushing the pipe to fall, the paddle plate 82 on the side corresponding to the arc plate 89 will squeeze the top end of the arc plate 89 during the rotation process, causing the arc plate 89 to swing, so as to use the upward-tilted bottom end of the arc plate 89 to push the pipe upward. After the pipe is pushed to the top end of the inclined plate 86, the pipe slides away from the area along the inclined plate 86 under the action of its own gravity. When the pipe rolls down, the rotating paddle plate 82 will be staggered with the top end of the arc plate 89, and the arc plate 89 will be reset under the action of the spring four 811, so that the subsequent pipes can fall smoothly.

[0077] Specifically, if Figure 1 and Figure 11-12 As shown, a deceleration assembly 87 is provided on the outside of the bracket 1 85. The deceleration assembly 87 includes a bracket 2 871 fixed on the top of the water tank 10. The top of the bracket 2 871 is fixedly connected to the inclined plate 2 872, and a movable plate 873 is installed on the inside of the bracket 2 871 through a rotating rod. A spring 3 874 is fixedly connected between one end of the movable plate 873 and the inclined plate 2 872. When the spring 3 874 is in the initial state, the inclined plate 2 872 is as shown in FIG. Figure 12 In the state shown, in this state, the distance between the lower end of the inclined plate 2 872 and the inclined plate 1 86 is smaller than the diameter of the pipe, while the distance between the upper end of the inclined plate 2 872 and the inclined plate 1 86 is larger than the diameter of the pipe. At the same time, the distance between the deflection support point of the inclined plate 2 872 and the inclined plate 1 86 is also larger than the diameter of the pipe.

[0078] It should be noted that in the process of the pipe sliding down along the inclined plate 1 86, when the pipe contacts the inclined plate 2 872, the low end of the inclined plate 2 872 will be pushed upward, causing the high end of the inclined plate 2 872 to swing downward and stretch the spring 3 874, thereby utilizing the reaction force generated during the deformation of the spring 3 874 to act on the inclined plate 2 872, thereby achieving deceleration and buffering of the sliding pipe, and avoiding the sliding pipe from having too much momentum and colliding with the previous rolling pipe to cause damage.

[0079] Example 2

[0080] Refer to the instruction manual Figure 1 and Figure 13-14 , a corrosion-resistant CPVC chemical pipe forming equipment according to an embodiment of the present invention, a feeding mechanism 9 is provided at the top of the hopper 4, the feeding mechanism 9 includes a ring support 91 fixedly sleeved on the outside of the hopper 4, a bracket 3 11 is fixedly connected between the bottom of the ring support 91 and the base 1, two vertical frames 92 are fixedly provided on the top of the ring support 91, a hollow ball 93 is provided between the two vertical frames 92, a ring 94 is movably sleeved on the middle part of the outer side of the hollow ball 93, a feed pipe 95 and a discharge pipe 96 are connected to the outer side of the ring 94, wherein control valves can be provided on both the feed pipe 95 and the discharge pipe 96 to control the on and off of material transportation, and the feed pipe 95 is set as the main material inlet pipe and the auxiliary material inlet pipe, and a material hole is opened on the surface of the hollow ball 93 at the position corresponding to the ring 94;

[0081] A stirring frame 97 is rotatably mounted on the inner side of the hollow ball 93 via a rotating rod. Motors 4 are fixedly mounted on the outer sides of the two vertical frames 92. The output shaft end of one of the motors 4 passes through the corresponding vertical frame 92 and is fixedly connected to the hollow ball 93. The output shaft end of the other motor 4 passes through the corresponding vertical frame 92 and the hollow ball 93 in sequence and is fixedly connected to the corresponding end of the stirring frame 97. The rotation direction of the stirring frame 97 is opposite to that of the hollow ball 93, and the hollow ball 93 rotates at a low speed, while the stirring frame 97 rotates at a high speed.

[0082] The feeding mechanism 9 also includes a gear ring 98 fixed to the outside of the hollow ball 93 and two limiting rings 911 fixed to the inside of the hopper 4. A ring support 99 is movably provided between the two limiting rings 911. A plurality of tooth blocks 910 evenly distributed in an annular shape are fixed on the top of the ring support 99. The gear ring 98 is meshed with the tooth blocks 910.

[0083] A ring cover 912 is rotatably installed on the inner side of the ring support 99 through a bearing, and a stirring frame 914 is movably provided inside the hopper 4. A connecting rod 913 is fixedly connected between the discharge pipe 96 and the ring cover 912. The setting of the connecting rod 913 can ensure that the ring 94 will not rotate relative to the hollow ball 93. An inclined rod 915 is fixedly connected between the stirring frame 914 and the ring support 99. The setting of the inclined rod 915 can improve the rotation stability of the stirring frame 914 while ensuring that the stirring frame 914 rotates synchronously with the ring support 99. A feeding screw is fixedly connected to the bottom end of the stirring frame 914.

[0084] It should be noted that, in the initial process of conveying the raw materials for pipe production, the control valve on the feed pipe 95 is first opened and the control valve on the discharge pipe 96 is closed, so that the main raw material and the auxiliary raw material of the target pipe are allowed to enter the hollow ball 93 from the corresponding feed pipe 95. During this process, the stirring frame 97 and the hollow ball 93 always rotate in opposite directions, so as to utilize the material holes on the hollow ball 93 to intermittently communicate with the two feed pipes 95, so as to achieve small amounts of multiple discharges and improve the mixing quality. When the first round of mixing is completed, the rotation of the hollow ball 93 is stopped, and one of the material holes is communicated with the discharge pipe 96. At the same time, the control valve on the feed pipe 95 is closed and the control valve on the discharge pipe 96 is opened, so that the mixed materials fall into the hopper 4. Then, in the next mixing process, the control valve on the feed pipe 95 is opened and the control valve on the discharge pipe 96 is closed, so that the mixing process and the process of feeding the materials into the extruder 3 are carried out synchronously.

[0085] When the second round of mixing is completed, the control valve on the feed pipe 95 is closed and the control valve on the discharge pipe 96 is opened, so that the process of feeding into the hopper 4 and the process of feeding into the extruder 3 are carried out simultaneously. After completing the feeding into the hopper 4, it is only necessary to open the control valve on the feed pipe 95 again and close the control valve on the discharge pipe 96, so that the mixing process and the process of feeding into the extruder 3 are carried out simultaneously. The subsequent feeding processes are all carried out in this process, so that the continuity of production can be ensured.

[0086] In the above technical solution, the motor mentioned is a servo motor of model JSMA-PUC02D; the thin film pressure sensor mentioned is a chip differential pressure sensor of model FSR-A406; and the water pump mentioned is an FYB explosion-proof stainless steel submersible pump.

[0087] A corrosion-resistant CPVC chemical pipe forming process is used to produce corrosion-resistant CPVC chemical pipes, specifically comprising the following steps:

[0088] S1. Mixing: The main material and auxiliary materials for producing the pipe are allowed to enter the hollow ball 93 in small amounts and intermittently in proportion under the continuous rotation of the hollow ball 93. The main material and auxiliary materials entering the hollow ball 93 are fully mixed by the stirring frame 97 in the opposite direction of the rotation of the hollow ball 93;

[0089] S2, plasticizing and extruding: after mixing, put it into the hopper 4, and use the rotating stirring frame 914 to drive the feeding screw to transport the target raw material in the hopper 4 to the extruder 3 for plasticizing and extruding;

[0090] S3, cooling and shaping: the pipe extruded from the extrusion head 5 is sent into the cooling cylinder 6 for simultaneous cooling and shaping inside and outside;

[0091] S4, fixed-length cutting: the pipe after cooling and shaping is measured and cut to fixed length by the fixed-length cutting mechanism 7;

[0092] S5. Unloading: The cut pipe is transported to the next process by the unloading mechanism 8, and the pipe is decelerated by the deceleration component during the sliding process of the pipe.

[0093] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A corrosion-resistant CPVC chemical pipe forming device, comprising a base (1), a bracket (2) fixedly provided on the top of the base (1), an extruder (3) fixedly installed on the top of the bracket (2), characterized in that: The feed end and the discharge end of the extruder (3) are respectively connected to a hopper (4) and an extrusion head (5); the discharge end of the extrusion head (5) is provided with a cooling cylinder (6) for simultaneously cooling the inner and outer walls of the extruded pipe; the discharge end of the cooling cylinder (6) is provided with a fixed-length slitting mechanism (7) for cutting the cooled pipe into a fixed length; The extrusion head (5) comprises a ring sleeve (51) detachably mounted on the end of the extruder (3) via a locking bolt, a column head (52) arranged concentrically with the ring sleeve (51) is provided inside the ring sleeve (51), and a plurality of L-shaped connecting rods (53) uniformly distributed in an annular shape are fixedly connected between the outer side of one end of the column head (52) close to the extruder (3) and the inner side of the ring sleeve (51); The cooling cylinder (6) includes a cylinder (61) fixedly connected to one end of the column head (52) and a sleeve (62) movably sleeved on the outside of the cylinder (61), a plurality of brackets (66) are fixedly connected between the outside of the sleeve (62) and the outside of the water tank (10), a plurality of annular grooves (63) are provided on the outside of the cylinder (61) and the inside of the sleeve (62) at equal intervals, and the annular grooves (63) on the outside of the cylinder (61) and the inside of the sleeve (62) are staggered. The outer side of the column (61) and the inner top of the sleeve (62) are both provided with straight grooves (64) that penetrate the plurality of annular grooves (63), and the ends of the two straight grooves (64) away from the extruder head (5) respectively penetrate the discharge ends of the column (61) and the sleeve (62), and the positions between the two adjacent annular grooves (63) inside the straight grooves (64) are fixedly provided with water retaining bars (65), and a water pump (68) is fixedly installed inside the water tank (10), and the liquid outlet end of the water pump (68) is connected to a water supply pipe (67), and the two water outlet ends of the water supply pipe (67) are respectively connected to the annular grooves (63) on the column (61) and the sleeve (62); A water tank (10) is fixedly provided on the top of the base (1), and the cooling cylinder (6) and the fixed-length slitting mechanism (7) are both mounted on the top of the water tank (10). A discharge mechanism (8) for assisting in unloading the cut pipe is provided at a position on the top of the water tank (10) corresponding to the fixed-length slitting mechanism (7); Support plates (12) are fixedly provided on both sides of the inner cavity of the water tank (10), and a filter box (13) is arranged between the top ends of the two support plates (12).

2. The corrosion-resistant CPVC chemical pipe forming equipment according to claim 1, characterized in that: The fixed-length slitting mechanism (7) is composed of a measuring portion and a slitting portion, wherein the slitting portion comprises an annular plate (712) sleeved on the outside of the sleeve (62), a plurality of annularly evenly distributed fan-shaped plates (713) are fixedly connected between the inner side of the annular plate (712) and the outer side of the sleeve (62), and a plurality of annularly evenly distributed L-shaped plates (715) are slidably connected to the outer side of the annular plate (712); A ring frame (714) is provided at one end of the ring plate (712), and a plurality of tooth blocks (718) uniformly distributed in an annular shape are fixedly provided on one side of the ring frame (714). A mounting groove is provided on one of the fan ring plates (713), and a motor (711) is fixedly installed inside the mounting groove. The end of the output shaft of the motor (711) is fixedly connected to a gear (719) meshing with the tooth block (718). A T-shaped ring groove (716) is provided on the outside of the ring frame (714), and the end of each L-shaped plate (715) is fixedly connected to a T-shaped arc block (717) slidably installed inside the T-shaped ring groove (716). Two L-shaped blocks (720) are fixedly provided on the other side of the ring frame (714), a U-shaped bracket (721) is slidably installed between the two L-shaped blocks (720), a second motor is fixedly installed on the inner side of the U-shaped bracket (721), and a circular saw blade (722) is fixedly provided on the end of the output shaft of the second motor. An ear block (723) corresponding to the L-shaped block (720) is fixedly provided on the outer side of the U-shaped bracket (721), and the bottoms of the two ear blocks (723) are fixedly connected to a guide rod (725) that movably passes through the corresponding L-shaped block (720), and a second spring (724) that is fixedly connected to the corresponding ear block (723) and the L-shaped block (720) is provided on the outer side of the guide rod (725).

3. The corrosion-resistant CPVC chemical pipe forming equipment according to claim 2, characterized in that: The measuring portion comprises a frame (72) fixed to the top of the water tank (10) and two side frames (71); a straight rod (73) is movably provided at positions on the frame (72) corresponding to the two side frames (71); a ring block (74) is fixedly connected between the ends of the two straight rods (73) away from the side frames (71); a disc (78) is fixedly provided at the ends of the two straight rods (73) close to the side frames (71); and a spring (79) is fixedly connected between the disc (78) and the corresponding side frame (71); A second straight rod (75) is fixedly provided on the top of the side of the ring block (74) facing the frame (72), a swing plate (76) is rotatably mounted on the inner side of the frame (72) via a rotating rod, the end of the second straight rod (75) contacts the surface of the swing plate (76), an L-shaped limiting strip (77) is fixedly connected to the middle of the top of the side of the frame (72) away from the ring block (74), and a notch (710) is provided in the middle of the bottom of the swing plate (76); An L-shaped ring strip (711) is fixedly provided at one end of the inner side of the ring block (74), and right-angle grooves are provided at both ends of the U-shaped bracket (721). The outer sides of both ends of the U-shaped bracket (721) and the inner side of the ring block (74) are both provided with inclined surfaces, and a thin film pressure sensor is installed inside the right-angle groove.

4. The corrosion-resistant CPVC chemical pipe forming equipment according to claim 3, characterized in that: The unloading mechanism (8) includes a collar (81) movably sleeved on the outside of two straight rods (73), two retaining rings for limiting the collar (81) at corresponding positions are fixedly sleeved on the outside of each straight rod (73), two sets of shift plates (82) are sleeved on the outside of each collar (81), and a gear (83) is fixedly sleeved on one end of the outside of each collar (81), two motors (3) are fixedly installed on the outside of the ring block (74), and the output shaft ends of the two motors (3) are fixedly connected to the gear (84) meshing with the corresponding gear (83); The unloading mechanism (8) further comprises a support seat 1 (85) and a support seat 3 (88) respectively fixed on both sides of the top of the water tank (10), an inclined plate 1 (86) being fixedly provided on the inner side of the support seat 1 (85), an arc plate (89) being rotatably mounted on the inner top of the support seat 3 (88) via a rotating rod, an arc rod (810) being fixedly connected to the outer bottom end of the arc plate (89) and movably penetrating the support seat 3 (88), and a spring 4 (811) being sleeved on the outer side of the arc rod (810) for fixedly connecting the support seat 3 (88) and the arc plate (89).

5. The corrosion-resistant CPVC chemical pipe forming equipment according to claim 4, characterized in that: The outer side of the bracket 1 (85) is provided with a deceleration assembly (87), and the deceleration assembly (87) includes a bracket 2 (871) fixed on the top of the water tank (10), the top of the bracket 2 (871) is fixedly connected with an inclined plate 2 (872), and the inner side of the bracket 2 (871) is rotatably mounted with a movable plate (873) through a rotating rod, and a spring 3 (874) is fixedly connected between one end of the movable plate (873) and the inclined plate 2 (872).

6. The corrosion-resistant CPVC chemical pipe forming equipment according to claim 1, characterized in that: The top of the hopper (4) is provided with a feeding mechanism (9), the feeding mechanism (9) includes a ring support (91) fixedly sleeved on the outside of the hopper (4), a bracket (11) fixedly connected between the bottom of the ring support (91) and the base (1), two vertical frames (92) fixedly provided on the top of the ring support (91), a hollow ball (93) provided between the two vertical frames (92), a ring (94) movably sleeved on the middle part of the outer side of the hollow ball (93), a feed pipe (95) and a discharge pipe (96) are connected to the outer side of the ring (94), and a material hole is opened on the surface of the hollow ball (93) at a position corresponding to the ring (94); A stirring frame (97) is rotatably mounted on the inner side of the hollow ball (93) via a rotating rod, and motors (4) are fixedly mounted on the outer sides of the two vertical frames (92), wherein the output shaft end of one of the motors (4) passes through the corresponding vertical frame (92) and is fixedly connected to the hollow ball (93), and the output shaft end of the other motor (4) passes through the corresponding vertical frame (92) and the hollow ball (93) in sequence and is fixedly connected to the corresponding end of the stirring frame (97).

7. The corrosion-resistant CPVC chemical pipe forming equipment according to claim 6, characterized in that: The feeding mechanism (9) further comprises a gear ring (98) fixed on the outside of the hollow ball (93) and two limiting rings (911) fixed on the inside of the hopper (4); a ring support (99) is movably provided between the two limiting rings (911); a plurality of tooth blocks (910) evenly distributed in an annular shape are fixed on the top of the ring support (99); and the gear ring (98) is meshed with the tooth blocks (910); A ring cover (912) is rotatably mounted on the inner side of the ring support (99) via a bearing, a stirring frame (914) is movably provided inside the hopper (4), a connecting rod (913) is fixedly connected between the discharge pipe (96) and the ring cover (912), an inclined rod (915) is fixedly connected between the stirring frame (914) and the ring support (99), and a feeding screw is fixedly connected to the bottom end of the stirring frame (914).

8. A corrosion-resistant CPVC chemical pipe forming process, wherein the corrosion-resistant CPVC chemical pipe forming equipment according to any one of claims 1 to 7 is used to produce the chemical pipe, characterized in that: The specific steps are as follows: S1. Mixing: The main material and auxiliary material for producing the pipe are allowed to enter the hollow ball (93) in a small amount intermittently and in proportion under the continuous rotation of the hollow ball (93), and the main material and auxiliary material entering the hollow ball (93) are fully mixed by a stirring frame (97) rotating in the opposite direction to the hollow ball (93); S2, plasticizing and extruding: after mixing, put it into the hopper (4), and use the rotating stirring frame 2 (914) to drive the feeding screw to transport the target raw material in the hopper (4) to the extruder (3) for plasticizing and extruding; S3, cooling and shaping: sending the pipe extruded from the extrusion head (5) into the cooling cylinder (6) for simultaneous cooling and shaping inside and outside; S4, fixed-length cutting: using the fixed-length cutting mechanism (7) to measure and cut the pipe after cooling and shaping; S5, unloading: The cut pipe is transported to the next process by using the unloading mechanism (8), and the pipe is decelerated by the deceleration component during the process of the pipe sliding down.

Images