A raw material storage device for PVC pipe manufacturing

Abstract

The present invention relates to the technical field of polyvinyl chloride materials, and discloses a raw material storage device for the manufacture of PVC pipes, comprising a shell, a mounting post fixedly mounted on the upper end of the inner cavity of the shell, a fixed disc fixedly mounted on the lower end of the mounting post, an output end of a driving motor fixedly connected to a rotating shaft, an outer surface of the rotating shaft fixedly connected to a driving inclined plate, a movable round rod movably mounted on the driving inclined plate, and a stirring bracket fixedly mounted on the lower end of the movable round rod. When the driving inclined plate performs a circular motion, the movable round rod rotates under the cooperation between the driven gear and the fixed disc, and when the movable round rod rotates, the stirring bracket rotates synchronously, thereby achieving the effect of enabling the stirring bracket to be in a non-stop rotating state while performing a circular motion, which can greatly improve the stirring effect of the stirring bracket and prevent the polyvinyl chloride raw material from precipitating or solidifying inside the shell.

Description

Technical Field

[0001] The invention relates to the technical field of polyvinyl chloride materials, in particular to a raw material storage device for manufacturing PVC pipes. Background Art

[0002] Currently, PVC pipes are mainly manufactured by compression extrusion, which involves using an extruder to extrude molten polyvinyl chloride into the shape of a pipe, which is then cooled and formed. To prevent molten polyvinyl chloride from condensing, it is often stored in a mixing barrel with a stirring rod installed inside. However, the stirring rod in the prior art has a fixed stirring area and a single stirring method, which often results in the polyvinyl chloride raw material sticking to the bottom or inner wall of the mixing barrel, resulting in a poor anti-condensation effect. In addition, molten polyvinyl chloride is highly toxic, and when the mixing barrel in the prior art is in operation, harmful gases inside the barrel often enter the indoor environment in large quantities, causing not only damage to the environment but also injuries to nearby workers. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In response to the deficiencies in the prior art, the present invention provides a raw material storage device for PVC pipe manufacturing, which has the advantage of enabling the stirring bracket to rotate continuously while performing circular motion, thereby greatly improving the stirring effect of the stirring bracket. Moreover, the device can automatically add a corresponding amount of anti-coagulant to the interior of the shell according to the amount of polyvinyl chloride, thereby effectively preventing the polyvinyl chloride from condensing inside the shell. In addition, the device can automatically seal the upper end of the feed pipe after the raw materials are added, thereby reducing the amount of harmful gases overflowing from the interior of the shell, etc., which can well solve the above-mentioned problems.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose of making the stirring bracket in a state of continuous rotation while performing circular motion, the stirring effect of the stirring bracket can be greatly improved, and a corresponding amount of anti-coagulant can be automatically added to the interior of the shell according to the amount of polyvinyl chloride, which can effectively prevent polyvinyl chloride from condensing inside the shell. In addition, the upper end of the feed pipe can be automatically sealed after the raw materials are added to reduce the amount of harmful gases overflowing from the inside of the shell. The present invention provides the following technical solutions: A raw material storage device for PVC pipe manufacturing, comprising a shell, a drive motor is fixedly installed on the upper end of the shell, a feed pipe is fixedly installed on the right side of the upper end of the shell, a mounting column is fixedly installed on the upper end of the inner cavity of the shell, a fixed disc is fixedly installed on the lower end of the mounting column, the output end of the drive motor is fixedly connected to the rotating shaft, the outer surface of the rotating shaft is fixedly connected to the driving inclined plate, and a movable round rod is movably installed on the driving inclined plate The top end of the movable plate and the inner wall of the horizontal through slot are fixedly connected, and a pushing spring is fixedly connected between the upper end of the movable plate and the inner wall of the horizontal through slot. The upper end of the left side of the horizontal through slot is provided with a movable scraper, and the lower end of the shell is fixedly installed with a discharge pipe.

[0007] Preferably, the rotating shaft passes through the center of the fixed disc, and the driving inclined plate is located below the fixed disc. When the driving motor is powered on, the rotating shaft will rotate around its own axis, and when the rotating shaft rotates, the driving inclined plate will make a circular motion around the rotating shaft.

[0008] Preferably, the movable round rod passes through the middle of the movable ball, and the movable ball is rotatably connected to the mounting plate. The movable ball can rotate freely inside the mounting plate. When the inclined plate is driven to perform circular motion, the stirring bracket will perform circular motion in the opposite direction. During the movement of the stirring bracket, the polyvinyl chloride inside the shell will be stirred.

[0009] Preferably, the lower end of the blocking end cover is movably connected to the shell through a rotating shaft, and a reset coil spring is fixedly sleeved on the outside of the rotating shaft. Initially, the blocking end cover is located above the feed pipe. When the worker opens the blocking end cover, the blocking end cover will automatically close under the action of the reset coil spring.

[0010] Preferably, the piston assembly includes a movable plug and a vertical rod, the lower end of the vertical rod is fixedly connected to the movable plug, the upper end of the vertical rod extends into the interior of the side wall cavity, the outer surface of the movable plug fits tightly against the inner wall of the empty storage tank, and when the vertical rod moves downward, the movable plug will move downward along the inner wall of the empty storage tank.

[0011] Preferably, the interior of the empty storage tank is filled with an anti-coagulant, and when the movable plug moves vertically downward, the anti-coagulant in the empty storage tank will enter the interior of the shell through the discharge nozzle.

[0012] Preferably, the right end of the movable plate is arc-shaped and extends into the interior of the side wall cavity. When the wedge-shaped rod moves vertically downward, it contacts the right end of the movable plate and causes the movable plate to move horizontally to the left.

[0013] Preferably, the lower end of the movable scraper contacts the upper surface of the movable plate, so that when the movable plate moves horizontally to the right under the action of the push spring, the movable scraper will scrape off the polyvinyl chloride raw material adhering to the upper surface of the movable plate.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the present invention provides a raw material storage device for PVC pipe manufacturing, which has the following beneficial effects:

[0016] 1. The raw material storage device for PVC pipe manufacturing drives the inclined plate and the movable round rod to cooperate with each other. When the inclined plate is driven to make a circular motion, the stirring bracket will make a circular motion in the opposite direction. During the movement of the stirring bracket, the polyvinyl chloride raw material inside the shell is stirred, thereby achieving the effect of effectively increasing the stirring area and preventing the polyvinyl chloride from adhering to the inner wall of the shell to a certain extent.

[0017] 2. The raw material storage device for PVC pipe manufacturing drives the inclined plate to perform circular motion through the mutual cooperation between the driven gear and the fixed disc. The movable round rod rotates under the cooperation between the driven gear and the fixed disc. When the movable round rod rotates, the stirring bracket rotates synchronously, thereby achieving the effect of enabling the stirring bracket to be in a continuous rotation state while performing circular motion, which can greatly improve the stirring effect of the stirring bracket and prevent the polyvinyl chloride raw material from precipitating or solidifying inside the shell.

[0018] 3. The raw material storage device for PVC pipe manufacturing cooperates with the wedge rod and the movable plate. When the wedge rod moves vertically downward, the movable plate will extend to the bottom of the feed pipe. When the polyvinyl chloride raw material falls downward, it will contact the movable plate and move the movable plate vertically downward. When the movable plate moves downward, the piston assembly will move vertically downward. When the piston assembly moves downward, the anticoagulant inside the empty storage tank will enter the interior of the shell, thereby achieving the effect of automatically adding anticoagulant to the interior of the shell, and the amount of anticoagulant added can be automatically adjusted as the amount of polyvinyl chloride changes, which can not only effectively prevent polyvinyl chloride from condensing inside the shell, but also prevent the waste of anticoagulant.

[0019] 4. The raw material storage device for PVC pipe manufacturing cooperates with the reset coil spring and the blocking end cover. After the polyvinyl chloride is added, the blocking end cover will flip to the top of the feed pipe under the elastic force of the reset coil spring, thereby blocking the upper end of the feed pipe, thereby effectively reducing the amount of harmful gases overflowing from the inside of the shell, which can greatly protect the health of the workers.

[0020] 5. The raw material storage device for PVC pipe manufacturing cooperates with the movable scraper and the push spring. When the wedge rod is out of contact with the right end of the movable plate, the movable plate will move horizontally to the right under the action of the push spring. During the movement of the movable plate, the movable scraper will scrape off the polyvinyl chloride raw materials adhering to the upper surface of the movable plate, thereby achieving the effect of automatically cleaning the upper surface of the movable plate and preventing the polyvinyl chloride raw materials from condensing on the upper surface of the movable plate and affecting its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention when it is working;

[0022] Figure 2 It is a schematic cross-sectional view of the internal structure of the present invention;

[0023] Figure 3 For the present invention Figure 1 A schematic diagram of the structure at center A;

[0024] Figure 4 This is a schematic diagram of the overall structure of the present invention during feeding;

[0025] Figure 5 Schematic diagram of the internal structure of the piston assembly in the present invention;

[0026] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 7 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0028] In the figure: 1. Shell; 2. Drive motor; 3. Feed pipe; 4. Mounting column; 5. Fixed disc; 6. Rotating shaft; 7. Driving inclined plate; 8. Movable round rod; 9. Driven gear; 10. Stirring bracket; 11. Mounting plate; 12. Movable round ball; 13. Sealing end cover; 14. Side wall cavity; 15. Wedge rod; 16. Elastic pull rope; 17. Reset coil spring; 18. Empty storage tank; 19. Discharge nozzle; 20. Piston assembly; 21. Horizontal through groove; 22. Movable plate; 23. Push spring; 24. Movable scraper; 25. Discharge pipe. DETAILED DESCRIPTION

[0029] 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 creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 A raw material storage device for PVC pipe manufacturing includes a shell 1, a driving motor 2 is fixedly installed on the upper end of the shell 1, a feeding pipe 3 is fixedly installed on the right side of the upper end of the shell 1, a mounting column 4 is fixedly installed on the upper end of the inner cavity of the shell 1, and a fixed disc 5 is fixedly installed on the lower end of the mounting column 4. The output end of the driving motor 2 is fixedly connected to a rotating shaft 6, and the rotating shaft 6 passes through the center of the fixed disc 5. The outer surface of the rotating shaft 6 is fixedly connected to a driving inclined plate 7, and the driving inclined plate 7 is located below the fixed disc 5. When the driving motor 2 is powered on, the rotating shaft 6 will rotate around its own axis. When the rotating shaft 6 rotates, the driving inclined plate 7 will make a circular motion around the rotating shaft 6. The movable round rod 8 is movably installed on the driving inclined plate 7, and the upper end of the movable round rod 8 is fixedly sleeved with a driven gear 9, and the lower end of the movable round rod 8 is fixedly installed with a stirring bracket 10. A mounting plate 11 is fixedly installed on the left side of the inner cavity of the shell 1, and a movable ball 12 is arranged inside the mounting plate 11. The movable round rod 8 passes through the middle of the movable ball 12, and the movable ball 12 is rotatably connected to the mounting plate 11. The movable ball 12 can rotate freely inside the mounting plate 11. When the inclined plate 7 is driven to make a circular motion, the stirring bracket 10 will make a circular motion in the opposite direction. During the movement of the stirring bracket 10, the polyvinyl chloride inside the shell 1 will be stirred.

[0031] Working principle:

[0032] When in use, the staff will first turn on the power of the drive motor 2, and then add the polyvinyl chloride raw material in a molten state into the interior of the shell 1 through the feed pipe 3.

[0033] When the drive motor 2 is powered on, the rotating shaft 6 rotates around its own axis. Since the driving swash plate 7 is fixedly connected to the rotating shaft 6 , the rotating shaft 6 rotates so that the driving swash plate 7 performs a circular motion around the rotating shaft 6 .

[0034] like Figure 1 、 Figure 2 As shown, when the inclined plate 7 is driven to make a circular motion, the stirring bracket 10 will make a circular motion in the opposite direction. During the movement of the stirring bracket 10, the polyvinyl chloride raw material inside the shell 1 will be stirred, thereby preventing the polyvinyl chloride raw material from precipitating or solidifying inside the shell 1.

[0035] In addition, since the outer surface shape of the driven gear 9 matches the outer surface shape of the fixed disc 5, and the two are always in a meshing state, when the driving inclined plate 7 makes a circular motion, the movable round rod 8 will rotate under the cooperation between the driven gear 9 and the fixed disc 5, and when the movable round rod 8 rotates, the stirring bracket 10 will rotate synchronously.

[0036] Therefore, the stirring bracket 10 is also in a state of continuous rotation during the circular motion, so that the stirring bracket 10 has a better stirring effect on the polyvinyl chloride raw material.

[0037] In summary: the present invention can drive the inclined plate 7 to cooperate with the movable round rod 8, and in the process of driving the inclined plate 7 to make a circular motion, the stirring bracket 10 will make a circular motion in the opposite direction. During the movement of the stirring bracket 10, the polyvinyl chloride raw material inside the shell 1 will be stirred, thereby achieving the effect of effectively increasing the stirring area, and can prevent the polyvinyl chloride from adhering to the inner wall of the shell 1 to a certain extent; in addition, the present invention can drive the inclined plate 7 to make a circular motion through the mutual cooperation between the driven gear 9 and the fixed disc 5, and the movable round rod 8 will rotate under the cooperation between the driven gear 9 and the fixed disc 5. When the movable round rod 8 rotates, the stirring bracket 10 will rotate synchronously, thereby achieving the effect of enabling the stirring bracket 10 to be in a non-stop rotation state while making a circular motion, which can greatly improve the stirring effect of the stirring bracket 10 and prevent the polyvinyl chloride raw material from precipitating or solidifying inside the shell 1.

[0038] In this embodiment, a blocking end cover 13 is movably installed on the right side of the upper end of the shell 1. The lower end of the blocking end cover 13 is movably connected to the shell 1 through a rotating shaft. The reset coil spring 17 is fixedly sleeved on the outside of the rotating shaft. Initially, the blocking end cover 13 is located above the feed pipe 3. When the worker opens the blocking end cover 13, the blocking end cover 13 will automatically close under the action of the reset coil spring 17. A side wall cavity 14 is opened inside the right side of the shell 1. A wedge rod 15 is slidably connected to the inside of the side wall cavity 14. The upper end of the wedge rod 15 is connected to the blocking end cover 13. The end covers 13 are fixedly connected by an elastic drawstring 16, and a reset coil spring 17 is provided at the connection between the end cover 13 and the shell 1. An empty storage tank 18 is fixedly installed on the right side of the inner cavity of the shell 1. The interior of the empty storage tank 18 is filled with an anti-coagulant. When the movable plug moves vertically downward, the anti-coagulant inside the empty storage tank 18 enters the interior of the shell 1 through the discharge nozzle 19. The lower end of the empty storage tank 18 is fixedly installed with a discharge nozzle 19. The interior of the empty storage tank 18 is slidably connected to a piston assembly 20. The piston assembly 20 includes a movable plug and a vertical The upper end of the vertical rod is fixedly connected to the movable plug, and the upper end of the vertical rod extends into the interior of the side wall cavity 14. The outer surface of the movable plug is tightly fitted with the inner wall of the empty storage tank 18. When the vertical rod moves downward, the movable plug will move downward along the inner wall of the empty storage tank 18. A horizontal through groove 21 is provided inside the upper end of the piston assembly 20. A movable plate 22 is slidably connected to the interior of the horizontal through groove 21. The right end of the movable plate 22 is arc-shaped and extends into the interior of the side wall cavity 14. When the wedge rod 15 moves vertically downward, It contacts the right end of the movable plate 22 and makes the movable plate 22 move horizontally to the left. A pushing spring 23 is fixedly connected between the upper end of the movable plate 22 and the inner wall of the horizontal through groove 21. A movable scraper 24 is provided at the upper end of the left side of the horizontal through groove 21. The lower end of the movable scraper 24 contacts the upper surface of the movable plate 22. When the movable plate 22 moves horizontally to the right under the action of the pushing spring 23, the movable scraper 24 will scrape off the polyvinyl chloride raw material adhering to the upper surface of the movable plate 22. A discharge pipe 25 is fixedly installed at the lower end of the shell 1.

[0039] Working principle:

[0040] like Figure 4 As shown, when the staff adds the polyvinyl chloride raw material into the interior of the shell 1, the blocking end cover 13 will be opened. During the opening process of the blocking end cover 13, the blocking end cover 13 will contact the wedge rod 15 and cause the wedge rod 15 to move vertically downward.

[0041] When the wedge rod 15 moves vertically downward, it will contact the right end of the movable plate 22 and cause the movable plate 22 to move horizontally to the left. When the movable plate 22 moves horizontally to the left, it will extend to the bottom of the feed pipe 3. Therefore, the polyvinyl chloride raw material will contact the movable plate 22 during the process of falling downward and cause the movable plate 22 to move vertically downward.

[0042] When the movable plate 22 moves downward, the piston assembly 20 will move vertically downward. When the piston assembly 20 moves downward, the anti-coagulant inside the empty storage tank 18 will enter the interior of the shell 1 through the discharge nozzle 19. Subsequently, the anti-coagulant will be fully mixed with the polyvinyl chloride raw material under the action of the stirring bracket 10.

[0043] Moreover, the more raw materials enter the shell 1, the greater the distance the piston assembly 20 moves downward, and the more anti-coagulant is discharged, thereby achieving the effect of automatically adding anti-coagulant to the interior of the shell 1, and the amount of anti-coagulant added can be automatically adjusted as the amount of polyvinyl chloride changes, which can not only effectively prevent polyvinyl chloride from condensing inside the shell 1, but also prevent the waste of anti-coagulant.

[0044] After the addition of polyvinyl chloride is completed, the sealing end cover 13 will flip to the top of the feed pipe 3 under the elastic force of the reset coil spring 17, thereby sealing the upper end of the feed pipe 3, thereby effectively reducing the amount of harmful gases overflowing from the inside of the shell 1, and can largely protect the health of the staff.

[0045] In addition, when the blocking end cover 13 is flipped upward, the elastic pull rope 16 will be pulled upward. Subsequently, the wedge rod 15 will move vertically upward under the action of the elastic pull rope 16. When the wedge rod 15 is out of contact with the right end of the movable plate 22, the movable plate 22 will move horizontally to the right under the action of the push spring 23. Since the lower end of the movable scraper 24 is always in contact with the upper surface of the movable plate 22, the movable scraper 24 will scrape off the polyvinyl chloride material adhering to the upper surface of the movable plate 22 during the movement of the movable plate 22, thereby achieving the effect of automatically cleaning the upper surface of the movable plate 22 and preventing the polyvinyl chloride material from condensing on the upper surface of the movable plate 22 and affecting its use.

[0046] In summary: the present invention can achieve the effect of automatically adding anti-coagulant to the interior of the shell 1 through the mutual cooperation between the wedge rod 15 and the movable plate 22. When the wedge rod 15 moves vertically downward, the movable plate 22 will extend to the bottom of the feed pipe 3. During the process of the polyvinyl chloride raw material falling downward, it will contact the movable plate 22 and cause the movable plate 22 to move vertically downward. When the movable plate 22 moves downward, the piston assembly 20 will move vertically downward. When the piston assembly 20 moves downward, the anti-coagulant inside the empty storage tank 18 will enter the interior of the shell 1, thereby achieving the effect of automatically adding anti-coagulant to the interior of the shell 1, and the amount of anti-coagulant added can be automatically adjusted as the amount of polyvinyl chloride changes, which can not only effectively prevent the polyvinyl chloride from condensing inside the shell 1, but also prevent the waste of anti-coagulant; moreover, the present invention can achieve the effect of automatically adding anti-coagulant to the interior of the shell 1 through the mutual cooperation between the reset coil spring 17 and the blocking end cover 13 After the addition of polyvinyl chloride is completed, the sealing end cover 13 will flip to the top of the feed pipe 3 under the elastic force of the return coil spring 17, thereby sealing the upper end of the feed pipe 3, thereby effectively reducing the amount of harmful gases overflowing from the inside of the shell 1, and can largely protect the health of the staff; in addition, the present invention can achieve the effect of mutual cooperation between the movable scraper 24 and the pushing spring 23. When the wedge rod 15 is out of contact with the right end of the movable plate 22, the movable plate 22 will move horizontally to the right under the action of the pushing spring 23. During the movement of the movable plate 22, the movable scraper 24 will scrape off the polyvinyl chloride raw material adhering to the upper surface of the movable plate 22, thereby achieving the effect of automatically cleaning the upper surface of the movable plate 22, preventing the polyvinyl chloride raw material from condensing on the upper surface of the movable plate 22 and affecting its use.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A raw material storage device for PVC pipe manufacturing, comprising a housing (1), characterized in that: The upper end of the shell (1) is fixedly mounted with a driving motor (2), the right side of the upper end of the shell (1) is fixedly mounted with a feeding pipe (3), the upper end of the inner cavity of the shell (1) is fixedly mounted with a mounting column (4), the lower end of the mounting column (4) is fixedly mounted with a fixed disc (5), the output end of the driving motor (2) is fixedly connected with a rotating shaft (6), the outer surface of the rotating shaft (6) is fixedly connected with a driving inclined plate (7), a movable round rod (8) is movably mounted on the driving inclined plate (7), the upper end of the movable round rod (8) is fixedly sleeved with a driven gear (9), and the lower end of the movable round rod (8) is fixedly mounted with a stirring bracket (10) The left side of the inner cavity of the shell (1) is fixedly installed with a mounting plate (11), the interior of the mounting plate (11) is provided with a movable ball (12), the right side of the upper end of the shell (1) is movably provided with a blocking end cover (13), the right side of the shell (1) is provided with a side wall cavity (14), the interior of the side wall cavity (14) is slidably connected with a wedge-shaped rod (15), the upper end of the wedge-shaped rod (15) and the blocking end cover (13) are fixedly connected by an elastic pull rope (16), the connection between the blocking end cover (13) and the shell (1) is provided with a reset coil spring (17), the right side of the inner cavity of the shell (1) is fixedly installed with an empty storage tank (18 ), a discharge nozzle (19) is fixedly installed at the lower end of the empty storage tank (18), a piston assembly (20) is slidably connected inside the empty storage tank (18), a horizontal through groove (21) is provided inside the upper end of the piston assembly (20), a movable plate (22) is slidably connected inside the horizontal through groove (21), a push spring (23) is fixedly connected between the upper end of the movable plate (22) and the inner wall of the horizontal through groove (21), a movable scraper (24) is provided at the upper end of the left side of the horizontal through groove (21), a discharge pipe (25) is fixedly installed at the lower end of the shell (1), and the interior of the empty storage tank (18) is filled with an anti-coagulant The right end of the movable plate (22) is arc-shaped and extends into the side wall cavity (14). The rotating shaft (6) passes through the center of the fixed disc (5). The driving inclined plate (7) is located below the fixed disc (5). The movable round rod (8) passes through the middle of the movable ball (12). The movable ball (12) is rotatably connected to the mounting plate (11). The piston assembly (20) includes a movable plug and a vertical rod. The lower end of the vertical rod is fixedly connected to the movable plug. The upper end of the vertical rod extends into the side wall cavity (14). The outer surface of the movable plug is tightly fitted with the inner wall of the empty storage tank (18).

2. A raw material storage device for PVC pipe manufacturing according to claim 1, characterized in that: The lower end of the blocking end cover (13) is movably connected to the housing (1) via a rotating shaft, and a return coil spring (17) is fixedly sleeved on the outside of the rotating shaft.

3. A raw material storage device for PVC pipe manufacturing according to claim 1, characterized in that: The lower end of the movable scraper (24) contacts the upper surface of the movable plate (22).

Images