Polyvinyl chloride resin anti-caking conveying pipeline

Abstract

The invention relates to the technical field of conveying pipelines, in particular to a polyvinyl chloride resin anti-caking conveying pipeline which comprises a pipe chain driving box, a pipe chain driven box, a conveying pipe chain, a main pipe and an auxiliary pipe, and the main pipe and the auxiliary pipe are arranged on the pipe chain driving box. A side block is fixedly connected to the bottom of the side, away from the pipe chain driving box, of the conversion plate, a plurality of threaded grooves are formed in the front side of the side block and the front side of the conversion plate, and a corner frame is arranged on the front side of the conversion plate. The chain is arranged vertically, does not occupy too much production site, can quickly turn over the tail section of the conveying pipeline when a production line is expanded in the later period, is still a closed loop, saves shutdown operations such as chain cutting, connection and tensioning, further enables the conveying pipeline to be lengthened in the later period, does not need to disassemble the chain, and is in two states through one machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying pipeline, in particular to a PVC resin anti-caking conveying pipeline. BACKGROUND

[0002] The PVC resin powder is extremely easy to absorb moisture and accumulate static electricity, and the traditional belt or screw conveying is easy to bridge, stick to the wall and block, and the dust overflow harms the environment, so the PVC resin powder adopts the scheme of pipe chain type closed conveying, a continuous scraper chain is arranged in the pipeline, the driving head drives the chain to slide at low speed, the scraper pushes the PVC resin powder forward along the wall, the whole pipeline has no dust leakage, manual knocking is not needed, and the PVC resin powder can be flexibly distributed and metering switched among multiple production lines, so that the PVC resin powder is dry, loose and continuous to reach the downstream extrusion or injection molding equipment, the conveying efficiency and workshop cleanliness are significantly improved, and the material waste and occupational health risk are reduced.

[0003] The existing pipe chain conveyor adopts a fixed length and straight rigid structure, and the conveying distance and feeding height are determined when the pipe chain conveyor is delivered from the factory, when the PVC resin powder production capacity is expanded or the process needs to be adjusted to prolong the conveying section, the user can only replace the longer pipe chain conveyor or add a second device, which leads to the need to stop the machine, cut the chain, reconnect and tension, the construction period is long, the investment cost is high, and the original equipment is idle.

[0004] Therefore, the PVC resin anti-caking conveying pipeline is proposed to solve the above problems. SUMMARY

[0005] The PVC resin anti-caking conveying pipeline is proposed to solve the problems in the background art.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is: a polyvinyl chloride resin anti-caking conveying pipeline, comprising a pipe chain driving box, a pipe chain driven box and a conveying pipe chain, and a main pipe and an auxiliary pipe arranged on the pipe chain driving box, the other end of the main pipe and the auxiliary pipe is provided with a conversion plate, the bottom of the side of the conversion plate away from the pipe chain driving box is fixedly connected with a side block, a plurality of threaded grooves are formed in the front side of the side block and the conversion plate, a corner frame is arranged on the front side of the conversion plate, a blocking plate is arranged on the front side of the corner frame, and a bolt is arranged on the front side of the blocking plate and penetrates the front side of the threaded groove, a cylinder is rotatably connected to the front side of the conversion plate, a plurality of spline pins for transmitting the movement of the conveying pipe chain are slidably connected to the outer wall of the cylinder, a storage mechanism for storing the spline pins is arranged on the cylinder, a groove is formed between the front side of the side block and the conversion plate, a lower semicircular hole frame is slidably connected to the inner side of the groove, a pair of vertical grooves are formed in the front side of the side block and the conversion plate, and the vertical grooves are in communication with the inner side of the groove, a side pipeline clamp is fixedly connected to the front side of the side block, a pushing mechanism for pushing out the lower semicircular hole frame is arranged in the vertical groove, and an expansion mechanism for horizontally installing the conveying pipe chain is further arranged.

[0007] In the above technical scheme, further, the side wall and the top end of the corner frame are provided with through grooves, the front side of the conversion plate is fixedly connected with a lower pipeline clamp relative to the position in the through groove, the top end of the corner frame is provided with a top cylinder, the pipe chain driven box is fixedly connected to the top end between the top cylinders, the outer wall of the top cylinder, the main pipe and the auxiliary pipe and the position inside the lower pipeline clamp are provided with snap ring grooves, and the top cylinder, the main pipe and the auxiliary pipe are sealingly inserted into the inner side of the lower pipeline clamp through the snap ring grooves, the rear end of the bolt is threadedly connected in the threaded groove through the corner frame, and the conveying pipe chain is arranged between the pipe chain driving box, the main pipe, the auxiliary pipe, the corner frame, the top cylinder and the pipe chain driven box.

[0008] In the above technical scheme, further, the rear side of the blocking plate is fixedly connected with an upper pipeline clamp relative to the position in the through groove, and the upper pipeline clamp is sealingly inserted into the inner side of the snap ring groove.

[0009] In the above technical scheme, further, the storage mechanism comprises a circular plate, the circular plate is slidably connected to the inner side of the cylinder, the front side of the cylinder is fixedly connected with a circular ring plate, the side wall of the spline pin is fixedly connected with a circular rod, the bottom end of the circular plate is fixedly connected with a right-angle plate with an inclined surface relative to the position above the circular rod, the inclined surface of the right-angle plate is in contact with the outer wall of the circular rod, the top end of the circular plate is fixedly connected with a pressing seat relative to the position inside the circular ring plate, a roller is rotatably connected to the inner side of the pressing seat, and the pressing seat is located at the position beside the center of the circular plate.

[0010] In the above technical scheme, further, the bottom end of the gear shaping is fixedly connected with a U-shaped block, the inner side of the U-shaped block and the inner wall of the cylinder are fixedly connected with a receiving spring, and the side wall of the circular plate and the side wall of the annular plate are fixedly connected with a reset spring.

[0011] In the above technical scheme, further, the push-out mechanism comprises four pull ropes, the inner side of the vertical groove is horizontally slidably connected with a top block, the bottom of the lower semicircular hole frame is fixedly connected with a pair of T-shaped blocks, the inner side of the vertical groove is rotatably connected with a guide roller at the front end, the four pull ropes are fixedly connected on the two sides of the T-shaped blocks, and the other end of the pull rope is fixedly connected on the side wall of the top block from the front side of the guide roller.

[0012] In the above technical scheme, further, a pair of sealing grooves are formed in the side wall of the lower semicircular hole frame, the upper sealing strip is fixedly connected to the inner position of the sealing groove with respect to the side wall of the corner frame, and the blocking block is fixedly connected to the inner position of the lower semicircular hole frame with respect to the rear side of the corner frame.

[0013] In the above technical scheme, further, the expansion mechanism comprises an L-shaped block and an L-shaped plate, a circular groove is formed through the front side of the L-shaped block with respect to the front side of the cylinder, the L-shaped plate and the L-shaped block are provided with an insertion groove on the front side with respect to the front side of the threaded groove, the rear side of the L-shaped block is fixedly connected with a rectangular block, the inner side of the circular groove is provided with a pressing rod, the front side of the pressing rod is provided with a rectangular groove matched with the rectangular block, the rear side of the L-shaped block is fixedly connected with two pairs of vertical rods, the front side of the L-shaped block is provided with a straight groove, and the rear side of the L-shaped plate is fixedly connected with an upper semicircular hole frame with respect to the inner position of the straight groove. During installation, the receiving mechanism is first pressed by the pressing rod, then the L-shaped block is installed on the conversion plate, then the L-shaped plate is installed and the rectangular block is inserted into the rectangular groove, and finally the bolt is screwed into the threaded groove through the insertion groove. In the above technical scheme, further, the straight groove is fixedly connected with a straight pipe clamp at both ends, and the rear side of the upper semicircular hole frame is fixedly connected with a pair of lower sealing strips.

[0014] Compared with the prior art, the present application has the following advantages: 1、The tail part of the polyvinyl chloride resin conveying pipeline is arranged in an L-shaped structure by the push-out mechanism and the expansion mechanism, so that the tail part can be arranged vertically without occupying too much production site when the capacity is not expanded, and the tail part of the conveying pipeline can be quickly turned over when the production line is expanded in the later period, and the chain is still a closed loop, so that the chain cutting, splicing and tensioning operations are omitted, and the conveying pipeline can be extended in the later period without chain disassembly and one machine with two states.

[0015] 2、The application can guide the corner of the conveying pipe chain through the spline and the cylinder when the tail of the conveying pipe is L-shaped, and can quickly collect the plurality of splines when the conveying pipe is turned over and expanded, so as to avoid hindering the assembly of the upper half-hole frame and the lower half-hole frame, and improve the stability in the conveying process of the conveying pipe. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front perspective structural schematic view of the conveying pipe of the application; Figure 2 It is a separated perspective structural schematic view of the corner frame and the blocking plate of the application; Figure 3 It is a separated perspective structural schematic view of the conversion plate and the side block of the application; Figure 4 It is a separated perspective structural schematic view of the L-shaped plate, the L-shaped block and the conversion plate of the application; Figure 5 It is a whole appearance structural schematic view of the L-shaped plate, the L-shaped block and the conversion plate of the application; Figure 6 It is a rear perspective structural schematic view of the L-shaped plate of the application; Figure 7 It is a separated perspective structural schematic view of the L-shaped block, the cylinder and the conveying pipe chain of the application; Figure 8 It is a separated perspective structural schematic view of the corner frame, the conversion plate and the side block of the application; Figure 9 It is a side partial cutaway perspective structural schematic view of the lower half-hole frame, the conveying pipe chain and the cylinder of the application; Figure 10 It is an attached Figure 9 It is a local enlarged structural schematic view of A in the middle.

[0017] In the figure: 1, pipe chain driving box; 2, auxiliary pipe; 3, conversion plate; 4, corner frame; 5, cylinder; 6, spline; 7, conveying pipe chain; 8, side block; 9, lower half-hole frame; 10, vertical groove; 11, lower pipe clamp; 12, top cylinder; 13, clasp ring groove; 14, blocking plate; 15, bolt; 16, upper pipe clamp; 17, main pipe; 18, round plate; 19, round ring plate; 20, round rod; 21, right-angle plate; 22, extrusion seat; 23, roller; 24, U-shaped block; 25, storage spring; 26, pull rope; 27, top block; 28, T-shaped block; 29, guide roller; 30, sealing groove; 31, upper sealing strip; 32, blocking block; 33, L-shaped block; 34, L-shaped plate; 35, round groove; 36, rectangular block; 37, extrusion rod; 38, rectangular groove; 39, vertical rod; 40, straight pipe clamp; 41, upper half-hole frame; 42, side pipe clamp; 43, lower sealing strip; 44, pipe chain driven box; 45, reset spring. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] In practical use, it has been found that existing tubular chain conveyors mostly adopt a rigid structure with fixed length and straight line. The conveying distance and feeding height are determined at the factory. When the production capacity of polyvinyl chloride resin powder is expanded or the process needs to be adjusted to extend the conveying section, users can only replace the entire tubular chain conveyor with a longer one or add a second piece of equipment. This results in the need to stop the machine to cut the chain, reconnect and tension it, which has a long construction period and high investment costs. The original equipment is then left idle. To solve the above problems, the following structure was invented.

[0021] like Figures 1-10 The illustrated polyvinyl chloride resin anti-caking conveying pipeline includes a pipe chain drive box 1, a pipe chain driven box 44, and a conveying pipe chain 7, as well as a main pipe 17 and a secondary pipe 2 installed on the pipe chain drive box 1. The main pipe 17 is equipped with an inlet hopper and a discharge valve for feeding and discharging. Both the main pipe 17 and the secondary pipe 2 are equipped with a conversion plate 3 at their other ends. A side block 8 is fixedly connected to the bottom of the conversion plate 3 on the side away from the pipe chain drive box 1. Several threaded grooves are opened on the front side of the side block 8 and the conversion plate 3. A corner frame 4 is provided on the front side of the conversion plate 3, and a sealing plate 14 is provided on the front side of the corner frame 4. The front side of the sealing plate 14 is positioned through the threaded grooves. There is a bolt 15. A cylinder 5 is rotatably connected to the front side of the conversion plate 3. Several insert teeth 6 for transmitting the movement of the conveying pipe chain 7 are slidably connected through the outer wall of the cylinder 5. The cylinder 5 is provided with a storage mechanism for retracting the insert teeth 6. A groove is opened between the side block 8 and the front side of the conversion plate 3. A lower semi-circular hole frame 9 is slidably connected to the inside of the groove. A pair of vertical grooves 10 are opened on the front side of both the side block 8 and the conversion plate 3. The vertical grooves 10 are slidably connected to the inside of the groove. A side pipe clamp 42 is fixedly connected to the front side of the side block 8. A push-out mechanism for pushing out the lower semi-circular hole frame 9 is provided in the vertical groove 10. An expansion mechanism for horizontally installing the conveying pipe chain 7 is also provided. The corner frame 4 side wall and top end are provided with through grooves, the front side of the conversion plate 3 is fixedly connected with the lower pipe clamp 11 at the position inside the through groove, the top end of the corner frame 4 is provided with a top cylinder 12 (it needs to be explained that the top cylinder 12 is provided with a reserved opening for installing a discharge valve), the pipe chain driven box 44 is fixedly connected at the top end between the top cylinders 12, the top cylinder 12, the main pipe 17 and the auxiliary pipe 2 outer wall and the position inside the lower pipe clamp 11 are provided with a snap ring groove 13, and the top cylinder 12, the main pipe 17 and the auxiliary pipe 2 are sealingly inserted inside the lower pipe clamp 11 through the snap ring groove 13, the rear end of the bolt 15 is threadedly connected in the threaded groove through the corner frame 4, and the conveying pipe chain 7 is arranged between the pipe chain driven box 1, the main pipe 17, the auxiliary pipe 2, the corner frame 4, the top cylinder 12 and the pipe chain driven box 44. The rear side of the sealing plate 14 is fixedly connected with the upper pipe clamp 16 at the position inside the through groove, and the upper pipe clamp 16 is sealingly inserted inside the snap ring groove 13. The conveying pipe chain 7 is a continuous scraper chain, the pipe chain driven box 1 is provided with a built-in motor, a speed reducer and a sprocket, after being powered on, the driving sprocket meshes with the chain on the conveying pipe chain 7 to provide traction for the whole pipe chain, and a tensioning screw is arranged to slightly adjust the position of the sprocket to keep the chain moderately tensioned, the chain is driven by the pipe chain driven box 1 to slide at low speed, the scraper on the conveying pipe chain 7 pushes the material forward along the pipe wall, the powder falls into the pipe bottom through the feeding port, the chain scrapes up the material and moves forward along the track, the chain turns at the discharge port, the scraper dumps the material to complete the conveying, the pipe lining is low-friction and anti-static, and is provided with an online vibration or knocking device to promote the adhesion of the material to fall off to realize self-cleaning, the whole pipeline has no dust leakage, and can be flexibly switched between multiple feeding points and multiple unloading points, and is suitable for long-distance and curved path closed conveying of powder prone to moisture absorption and caking. After the polyvinyl chloride resin powder is conveyed into the equipment, the conveying pipe chain 7 continues to move in the main pipe 17, then moves into the corner frame 4, and moves into the top cylinder 12 under the guidance of the pinion 6 and the cylinder 5 (at this time, it moves into the top cylinder 12 due to the pulling force of the pipe chain driven box 44), the conveying pipe chain 7 is turned by 180° in the chain return stroke in the pipe chain driven box 44 to form a closed loop, the spring or oil cylinder in the box automatically compensates for the elongation of the chain to prevent tooth skipping and abnormal wear, and ensures stable conveying of the polyvinyl chloride resin powder for a long period, then the conveying pipe chain 7 passes through the auxiliary pipe 2 and returns to the pipe chain driven box 1, and the process is repeated to realize the conveying of the polyvinyl chloride resin powder.

[0022] In summary, through the design of the above structure, the tail of the polyvinyl chloride resin conveying pipeline is arranged in an L shape, so that it can be vertically arranged without expanding the capacity and occupying too much production site.

[0023] On the basis of the above embodiment, it is found that the above structure only reserves the top cylinder 12 as the expansion structure, but during the conversion process, the pinion 6 on the cylinder 5 will affect the installation of the external pipeline of the conveying pipe chain 7. In order to solve the above problem, the above structure is further improved.

[0024] The receiving mechanism includes a circular plate 18 slidingly connected inside the cylinder 5, a circular ring plate 19 fixedly connected to the front side of the cylinder 5, a circular rod 20 fixedly connected to the side wall of the pinion 6, a straight plate 21 with a slope fixedly connected to the bottom end of the circular plate 18 relative to the position above the circular rod 20, and the slope of the straight plate 21 is in contact with the outer wall of the circular rod 20, an extrusion seat 22 fixedly connected to the top end of the circular plate 18 relative to the inner side of the circular ring plate 19, a roller 23 rotatably connected inside the extrusion seat 22, and the extrusion seat 22 is located at the position beside the center of the circular plate 18; A U-shaped block 24 is fixedly connected to the bottom end of the pinion 6, a receiving spring 25 is fixedly connected between the inner side of the U-shaped block 24 and the inner wall of the cylinder 5, and a return spring 45 is fixedly connected between the side wall of the circular plate 18 and the side wall of the circular ring plate 19; The push-out mechanism includes four pull ropes 26, a top block 27 slidingly connected inside the vertical groove 10, a pair of T-shaped blocks 28 fixedly connected to the bottom of the lower semicircular hole frame 9, a guide roller 29 rotatably connected to the inner side of the vertical groove 10, the four pull ropes 26 fixedly connected to the two sides of the T-shaped blocks 28, and the other ends of the pull ropes 26 fixedly connected to the side wall of the top block 27 from the front side of the guide roller 29; A pair of sealing grooves 30 are formed in the side wall of the lower semicircular hole frame 9, an upper sealing strip 31 is fixedly connected to the inner position of the sealing groove 30 relative to the side wall of the corner frame 4, and a blocking block 32 is fixedly connected to the inner position of the lower semicircular hole frame 9 relative to the rear side of the corner frame 4. Through the arrangement of the upper sealing strip 31 and the blocking block 32, the blocking effect of the lower semicircular hole frame 9 during the installation of the corner frame 4 on the conversion plate 3 can be ensured, the combination of the conversion plate 3 and the corner frame 4 can be in a sealed state, and the sealed conveying of the polyvinyl chloride resin powder can be ensured. The expansion mechanism includes an L-shaped block 33 and an L-shaped plate 34, a circular groove 35 is formed in the front side of the L-shaped block 33 relative to the front side of the cylinder 5, an insertion groove is formed in the front side of the L-shaped plate 34 and the L-shaped block 33 relative to the front side of the threaded groove, a rectangular block 36 is fixedly connected to the rear side of the L-shaped block 33, an extrusion rod 37 is arranged inside the circular groove 35, a rectangular groove 38 is formed in the front side of the extrusion rod 37, the rectangular groove 38 is matched with the rectangular block 36, two pairs of vertical rods 39 are fixedly connected to the rear side of the L-shaped block 33, a straight groove is formed in the front side of the L-shaped block 33, straight pipeline clamps 40 are fixedly connected to both ends of the straight groove, an upper semicircular hole frame 41 is fixedly connected to the inner position of the straight groove relative to the rear side of the L-shaped plate 34, and a pair of lower sealing strips 43 are fixedly connected to the rear side of the upper semicircular hole frame 41. When installing, first use the extrusion rod 37 to extrude the storage mechanism, then install the L-shaped block 33 on the conversion plate 3, then install the L-shaped plate 34 and insert the rectangular block 36 into the rectangular groove 38, and then thread the bolt 15 through the insertion slot and thread it in the threaded groove. When the length of the polyvinyl chloride resin powder conveying pipeline needs to be expanded, first remove the bolt 15 on the blocking plate 14, which can release the limiting of the blocking plate 14, then remove the blocking plate 14 and the corner frame 4, which will drive the upper pipeline clamp 16 to be pulled out of the snap ring groove 13, then rotate the top cylinder 12 while driving the conveying pipe chain 7 to rotate, place the top cylinder 12 on the side pipeline clamp 42 (the conveying pipe chain 7 is in a horizontal state at this time), then remove the extrusion rod 37 and insert it into the circular ring plate 19, at this time the side end of the extrusion rod 37 will extrude the roller 23 to push the extrusion seat 22 to move, thereby driving the circular plate 18 to slide into the cylinder 5, while stretching the return spring 45, in this process, the movement of the circular plate 18 will drive multiple right-angle plates 21 to move, because the spline 6 can only slide on the cylinder 5, under the action of the movement of the right-angle plate 21, the inclined surface of the right-angle plate 21 will extrude the circular surface of the circular rod 20 and push the spline 6 to slide into the cylinder 5; Thus the multiple splines 6 are retracted into the cylinder 5, while driving the U-shaped block 24 to move and stretching the storage spring 25, then remove the L-shaped block 33 and the L-shaped plate 34, first place the L-shaped block 33 on the conversion plate 3 (at this time the extrusion rod 37 needs to be pressed to prevent the spline 6 from extending and affecting the normal placement of the L-shaped block 33), and drive the straight pipeline clamp 40 to be sealed and clamped on the outer wall of the top cylinder 12 and the main pipe 17 (when installing another conversion plate 3, the straight pipeline clamp 40 will be sealed and clamped on the outer wall of the top cylinder 12 and the auxiliary pipe 2), and insert the cylinder 5 into the circular groove 35, in this process, multiple vertical rods 39 need to be inserted into the corresponding vertical grooves 10, by inserting the vertical rod 39, the vertical rod 39 will push the top block 27 to move, while pulling the pull rope 26 to move, at this time under the guidance of the guide roller 29, the pull rope 26 will pull the T-shaped block 28 and the lower half circular hole frame 9 to slide in the groove, so that the inner side of the lower half circular hole frame 9 is sealed and clamped with the outer wall of the top cylinder 12 and the main pipe 17 (when installing another conversion plate 3, the inner side of the lower half circular hole frame 9 will be sealed and clamped on the outer wall of the top cylinder 12 and the auxiliary pipe 2); Subsequently, the L-shaped plate 34 can be placed on the L-shaped block 33, and the rectangular block 36 is inserted into the corresponding rectangular slot 38, and the upper semicircular hole frame 41 is sealed and connected with the lower semicircular hole frame 9, so as to seal and pack the conveying pipe chain 7 between the upper semicircular hole frame 41 and the lower semicircular hole frame 9, and the lower sealing strip 43 is inserted into the sealing groove 30, ensuring the sealing performance of the upper semicircular hole frame 41 and the lower semicircular hole frame 9 after being connected, and finally a plurality of bolts 15 are inserted into the threaded holes on the conversion plate 3 to complete the quick conversion of the conveying pipeline, and then the feeding port of the polyvinyl chloride resin processing equipment is connected with the reserved port on the top cylinder 12, and the polyvinyl chloride resin processing equipment can be used.

[0025] Finally, it should be noted that when the conversion plate 3, the corner frame 4, the L-shaped block 33, the plugging plate 14, the upper pipeline clamp 16, the lower pipeline clamp 11, the side pipeline clamp 42 and the straight pipeline clamp 40 are combined and installed, sealing rings are provided between them to ensure the sealing of the connection gap, thereby ensuring the sealing effect of the conveying pipeline.

[0026] In summary, through the design of the above structure, the tail section of the conveying pipeline can be quickly turned over when the production line is expanded in the later period, and the chain is still a closed loop, eliminating the need for chain cutting, splicing, tensioning and other shutdown operations, thereby allowing the conveying pipeline to be extended in the later period without the need to disassemble the chain, and the machine can have two states, at the same time, not only can the guide effect of the tooth 6 and the cylinder 5 on the corner of the conveying pipe chain 7 be achieved when the tail of the conveying pipeline is L-shaped, but also multiple teeth 6 can be quickly retracted when expanding, avoiding hindering the assembly of the upper semicircular hole frame 41 and the lower semicircular hole frame 9, and improving the stability of the conveying pipeline during transmission.

[0027] The above shows and describes the basic principles, main features and advantages of the present application.

[0028] Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A polyvinyl chloride resin anti-blocking conveying pipe comprising a pipe chain driving box (1), a pipe chain driven box (44) and a conveying pipe chain (7), and a main pipe (17) and a sub pipe (2) provided on the pipe chain driving box (1), characterized in that: The main pipe (17) and the vice pipe (2) are provided with the conversion plate (3) at the other end, the bottom of the conversion plate (3) is fixedly connected with the side block (8) away from the pipe chain drive box (1) side, a plurality of threaded grooves are formed in the front side of the side block (8) and the conversion plate (3), the corner frame (4) is arranged on the front side of the conversion plate (3), the front side of the corner frame (4) is provided with the blocking plate (14), the bolts (15) are arranged in the front side of the threaded grooves, the cylinder (5) is rotatably connected to the front side of the conversion plate (3), the outer wall of the cylinder (5) is slidably connected with a plurality of pinions (6) for transmitting the movement of the conveying pipe chain (7), the cylinder (5) is provided with a storage mechanism for storing the pinions (6), the recess is formed between the front side of the side block (8) and the conversion plate (3), the lower half circular hole frame (9) is slidably connected to the inner side of the recess, a pair of vertical grooves (10) are formed in the front side of the side block (8) and the conversion plate (3), the vertical grooves (10) are in communication with the inner side of the recess, the side pipe clamp (42) is fixedly connected to the front side of the side block (8), the ejecting mechanism for ejecting the lower half circular hole frame (9) is arranged in the vertical groove (10), and the capacity expanding mechanism for horizontally mounting the conveying pipe chain (7) is further arranged.

2. A polyvinyl chloride resin anti-caking delivery pipe according to claim 1, characterized by: The side wall and the top end of the corner frame (4) are provided with the through groove, the lower pipe clamp (11) is fixedly connected to the inner side of the through groove relative to the front side of the conversion plate (3), the top end of the corner frame (4) is provided with the top cylinder (12), the pipe chain driven box (44) is fixedly connected to the top end between the top cylinders (12), the top cylinder (12), the main pipe (17) and the vice pipe (2) are provided with the snap ring groove (13) at the outer wall and the inner side of the lower pipe clamp (11), the top cylinder (12), the main pipe (17) and the vice pipe (2) are sealingly inserted into the inner side of the lower pipe clamp (11) through the snap ring groove (13), the rear end of the bolt (15) is threadedly connected in the threaded groove through the corner frame (4), and the conveying pipe chain (7) is arranged between the pipe chain drive box (1), the main pipe (17), the vice pipe (2), the corner frame (4), the top cylinder (12) and the pipe chain driven box (44).

3. A polyvinyl chloride resin anti-caking delivery pipe according to claim 2, characterized by: The upper pipe clamp (16) is fixedly connected to the inner side of the through groove relative to the rear side of the blocking plate (14), and the upper pipe clamp (16) is sealingly inserted into the inner side of the snap ring groove (13).

4. A polyvinyl chloride resin anti-caking delivery pipe according to claim 1, characterized by: The storage mechanism comprises a circular plate (18), the circular plate (18) is slidably connected to the inner side of the cylinder (5), the front side of the cylinder (5) is fixedly connected with a circular ring plate (19), the side wall of the pinion (6) is fixedly connected with a circular rod (20), the bottom end of the circular plate (18) is fixedly connected with a right angle plate (21) with an inclined surface relative to the upper side of the circular rod (20), the inclined surface of the right angle plate (21) is in contact with the outer wall of the circular rod (20), the top end of the circular plate (18) is fixedly connected with a pressing seat (22) relative to the inner side of the circular ring plate (19), the inner side of the pressing seat (22) is rotatably connected with a roller (23), and the pressing seat (22) is located at the center of the circular plate (18).

5. A polyvinyl chloride resin anti-caking delivery pipe according to claim 4, characterized by: The bottom end of the gear shaping (6) is fixedly connected with a U-shaped block (24), the inner side of the U-shaped block (24) and the inner wall of the cylinder (5) are fixedly connected with a receiving spring (25), and the side wall of the circular plate (18) and the side wall of the circular ring plate (19) are fixedly connected with a reset spring (45).

6. A polyvinyl chloride resin anti-caking delivery pipe according to claim 1, characterized by: The push-out mechanism comprises four pull ropes (26), the inner side of the vertical groove (10) is horizontally slidably connected with a top block (27), the bottom of the lower half circular hole frame (9) is fixedly connected with a pair of T-shaped blocks (28), the inner side of the vertical groove (10) is rotatably connected with a guide roller (29) at the front end, the four pull ropes (26) are fixedly connected on the two sides of the T-shaped block (28), and the other end of the pull rope (26) is fixedly connected on the side wall of the top block (27) from the front side of the guide roller (29).

7. A polyvinyl chloride resin anti-caking delivery pipe according to claim 1, characterized by: The side wall of the lower half circular hole frame (9) is provided with a pair of sealing grooves (30), the side wall of the corner frame (4) is fixedly connected with an upper sealing strip (31) at the inner position of the sealing groove (30), and the rear side of the corner frame (4) is fixedly connected with a blocking block (32) at the inner position of the lower half circular hole frame (9).

8. A polyvinyl chloride resin anti-caking delivery pipe according to claim 1, characterized by: The expansion mechanism comprises an L-shaped block (33) and an L-shaped plate (34), the front side of the L-shaped block (33) is provided with a circular groove (35) penetrating the front side of the cylinder (5), the front side of the L-shaped plate (34) and the L-shaped block (33) is provided with an insertion slot at the front side of the threaded groove, the rear side of the L-shaped block (33) is fixedly connected with a rectangular block (36), the inner side of the circular groove (35) is provided with an extrusion rod (37), the front side of the extrusion rod (37) is provided with a rectangular slot (38) matched with the rectangular block (36), the rear side of the L-shaped block (33) is fixedly connected with two pairs of vertical rods (39), the front side of the L-shaped block (33) is provided with a straight groove penetrating, and the rear side of the L-shaped plate (34) is fixedly connected with an upper half circular hole frame (41) at the inner position of the straight groove. During installation, first, the extrusion rod (37) is used to extrude the receiving mechanism, then the L-shaped block (33) is installed on the conversion plate (3), then the L-shaped plate (34) is installed and the rectangular block (36) is inserted into the rectangular slot (38), and finally the bolt (15) is threaded and connected in the threaded groove through the insertion slot.

9. A polyvinyl chloride resin anti-caking delivery pipe according to claim 8, characterized by: The straight groove is fixedly connected with a straight pipe clamp (40) at both ends, and the rear side of the upper half circular hole frame (41) is fixedly connected with a pair of lower sealing strips (43).

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