A vacuum device capable of automatic cleaning for PVC pipe production

Abstract

The utility model relates to an automatic cleaning vacuum device for PVC pipe production, including a vacuum feeder, an extruder and a material box. The vacuum feeder includes a cylinder, a vacuum tube is connected to the top of the cylinder, and the vacuum tube is connected to the vacuum pump suction port at the top of the cylinder. A partition is provided in the upper part of the cylinder, a circular hole is opened in the center of the partition, a first isolation mesh cover is provided at the bottom of the partition on the circumference of the circular hole, and a second isolation mesh cover is provided at the top of the partition. The first isolation mesh cover and the second isolation mesh cover are both hemispherical and the aperture of the first isolation mesh cover is larger than the aperture of the second isolation mesh cover. A first electric push rod is provided on the left and right side walls of the cylinder below the first isolation mesh cover, and a first striking plate is fixedly connected to the telescopic end of the first electric push rod. A second electric push rod is provided on the left and right side walls of the cylinder above the second isolation mesh cover, and a second electric push rod is fixedly connected to the telescopic end of the second electric push rod. The utility model can realize two-level isolation protection and can automatically beat and clear the two-level isolation mesh covers, which is more practical.

Description

Technical Field

[0001] The utility model belongs to the technical field of PVC pipe production, and in particular relates to an automatic cleaning vacuum pumping device used in PVC pipe production. Background Art

[0002] At present, when PVC pipes are extruded, vacuum feeders are often used for feeding. Vacuum feeders, also known as vacuum conveyors, are dust-free and closed pipeline conveying equipment that uses vacuum suction to convey granular or powdered materials. The pressure difference between the vacuum and the ambient space is used to form gas flow in the pipeline, driving the movement of granular or powdered materials, thereby completing the transportation of materials. However, in actual applications, there is a phenomenon that some materials will be sucked into the vacuum pipeline. When the vacuum feeder runs for a long time, the materials entering the vacuum pipeline gradually accumulate and easily cause the vacuum pipeline to be blocked, requiring shutdown and manual inspection and maintenance. The operation is inconvenient, time-consuming and labor-intensive, which is not conducive to the extrusion production of PVC pipes and needs to be improved. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide an automatic cleaning vacuum device for PVC pipe production, which can realize two-level isolation protection and can automatically beat and clear the two-level isolation mesh covers to solve the above problems.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a vacuum extraction device with automatic cleaning for PVC pipe production, comprising a vacuum feeder, an extruder and a material box, the vacuum feeder comprising a cylinder, the top of the cylinder is connected with a vacuum tube, the lower side wall is connected with a feeder tube, the bottom is in an inverted cone and is coaxially connected with a feeder tube, the tail end of the vacuum tube is connected with an air intake port of a vacuum pump fixed on the top of the cylinder, the tail end of the feeder tube is detachably connected with a discharge port of the material box, the tail end of the feeder tube is detachably connected with a feed port on the extruder, a partition is fixedly provided in the upper part of the cylinder, a circular hole is opened in the center of the partition, a first isolation mesh cover is fixedly provided at the bottom of the partition corresponding to the circumference of the circular hole, and a second isolation mesh cover is fixedly provided at the top of the corresponding partition, The first isolation mesh cover and the second isolation mesh cover are both hemispherical and the aperture of the first isolation mesh cover is larger than that of the second isolation mesh cover. The left and right side walls of the cylinder below the first isolation mesh cover are both obliquely penetrated and fixedly provided with a first electric push rod, the telescopic end of the first electric push rod faces the first isolation mesh cover and is fixedly connected to a first striking plate, the left and right side walls of the cylinder above the second isolation mesh cover are both obliquely penetrated and fixedly provided with a second electric push rod, the telescopic end of the second electric push rod faces the second isolation mesh cover and is fixedly connected to a second striking plate, a controller and an air pressure detector are fixedly provided on the outer wall of the cylinder, the detection probe of the air pressure detector extends into the cylinder below the partition, and the air pressure detector, the first electric push rod and the second electric push rod are all electrically connected to the controller.

[0005] Preferably, the tail end of the feeding pipe is fixedly connected with a telescopic bellows, and the tail end of the telescopic bellows is connected with the discharge port of the material box through a quick connector.

[0006] Preferably, a fixing plate is vertically fixedly connected to the outer bottom of the cylinder body on the left and right sides of the down pipe, a plurality of fixing through holes are opened on the fixing plate, the feed port of the extruder is fixedly connected to the feed pipe, the outer side of the feed pipe is fixedly sleeved with a square support plate, mounting boxes are fixedly provided on the top of the support plates on the left and right sides of the feed pipe, the top of the mounting box is open, and a plurality of locking through holes are opened on the left and right sides, a hydraulic cylinder is fixedly mounted on the left and right sides of the support plate, the piston rod of the hydraulic cylinder faces the mounting box on the same side and is fixedly connected to a movable plate, a plurality of fixing rods are fixedly provided on a side of the movable plate close to the mounting box on the same side, the down pipe is inserted into the inner side of the feed pipe, the fixing plate is inserted into the mounting box on the same side, the movable plate abuts against the outer side of the mounting box on the same side, the fixing rods correspond one-to-one to the fixing through holes and the locking through holes on the same side, and the fixing rods pass through the corresponding fixing through holes and locking through holes.

[0007] Preferably, the feed pipe is adapted to the feed pipe.

[0008] Preferably, the fixing plate is matched with the corresponding installation box.

[0009] Preferably, the fixing rod is matched with the corresponding fixing through hole and locking through hole.

[0010] The beneficial effect of the utility model is that during the extrusion processing and feeding of PVC pipes, it is only necessary to operate the vacuum pump and evacuate the cylinder of the vacuum feeder through the vacuum tube to form a negative pressure inside the cylinder. Under the action of the negative pressure, the material in the material box can be automatically pumped into the cylinder through the feeding tube, and discharged to the extruder through the discharge tube to realize the extrusion feeding operation. During the feeding process, the first isolation mesh cover with decreasing aperture and the second isolation mesh cover can cooperate with each other to form a two-level effective isolation protection for the vacuum tube, which can greatly enhance the blocking ability of the material, and can more effectively prevent the material from being pumped into the vacuum tube under the action of negative pressure, thereby more effectively avoiding the blockage of the vacuum tube. At the same time, the air pressure detector can detect the internal air pressure of the cylinder below the partition in real time and feed back the air pressure information to the controller. When the first isolation mesh cover and / or the second isolation mesh cover become clogged during long-term use, causing the air pressure below the partition to become abnormal, causing the air pressure inside the cylinder below the partition to be higher than the set warning value, the controller can automatically control the start of the first electric push rod and / or the second electric push rod, and through the extension and retraction of the telescopic ends of the first electric push rod and / or the second electric push rod, drive the corresponding first striking plate and / or the second striking plate to strike the corresponding first isolation mesh cover and the second isolation mesh cover back and forth multiple times, so as to achieve automatic beating and clearing of the two-stage isolation mesh covers, and ensure the smooth progress of the vacuum feeding operation. In addition, the detachable connection between the feeding pipe and the material box and the detachable connection between the feeding pipe and the extruder allow the entire vacuum feeder to be flexibly disassembled and assembled, which is convenient for its overall replacement when needed, making the device more practical as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a main structural schematic diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of the vacuum feeder of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the vacuum feeder of the utility model when viewed from above;

[0014] Figure 4 This is a schematic diagram of the main structure of the feed pipe of the utility model;

[0015] Figure 5 It is a schematic diagram of the top view of the feed pipe of the utility model;

[0016] Figure 6 It is a main structural schematic diagram of the utility model when the feeding pipe is connected with the feeding pipe.

[0017] Numbers in the figure: 1 is a vacuum loader, 2 is an extruder, 3 is a material box, 4 is a barrel, 5 is a vacuum tube, 6 is a feeding tube, 7 is a feeding tube, 8 is a vacuum pump, 9 is a partition, 10 is a round hole, 11 is a first isolation mesh cover, 12 is a second isolation mesh cover, 13 is a first electric push rod, 14 is a first strike plate, 15 is a second electric push rod, 16 is a second strike plate, 17 is a controller, 18 is an air pressure detector, 19 is a telescopic bellows, 20 is a quick connector, 21 is a fixed plate, 22 is a fixed through hole, 23 is a feed pipe, 24 is a support plate, 25 is a mounting box, 26 is a locking through hole, 27 is a hydraulic cylinder, 28 is a movable plate, and 29 is a fixed rod. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0019] like Figures 1 to 6 As shown, a vacuum pumping device for PVC pipe production that can be automatically cleaned includes a vacuum feeder 1, an extruder 2 and a material box 3. The vacuum feeder 1 includes a barrel 4. The top of the barrel 4 is connected to a vacuum tube 5, the lower side wall is connected to a feed tube 6, and the bottom is in an inverted cone and coaxially connected to a feed tube 7. The tail end of the vacuum tube 5 is connected to the suction port of a vacuum pump 8 fixed on the top of the barrel 4. The tail end of the feed tube 6 is detachably connected to the discharge port of the material box 3, and the tail end of the feed tube 7 is detachably connected to the feed port on the extruder 2. A partition 9 is fixedly provided in the upper part of the barrel 4, and a circular hole 10 is opened in the center of the partition 9. A first isolation mesh cover 11 is fixedly provided at the bottom of the corresponding partition 9 around the circular hole 10, and a second isolation mesh cover 12 is fixedly provided at the top of the corresponding partition 9. The first isolation mesh cover 11 and the second isolation mesh cover 12 are both hemispherical, and the aperture of the first isolation mesh cover 11 is larger than the aperture of the second isolation mesh cover 12. A first electric push rod 13 is fixedly installed obliquely through the left and right side walls of the cylinder 4 below the first isolation mesh cover 11. The telescopic end of the first electric push rod 13 faces the first isolation mesh cover 11 and is fixedly connected to a first striking plate 14. A second electric push rod 15 is fixedly installed obliquely through the left and right side walls of the cylinder 4 above the second isolation mesh cover 12. The telescopic end of the second electric push rod 15 faces the second isolation mesh cover 12 and is fixedly connected to a second striking plate 16. A controller 17 and an air pressure detector 18 are fixedly installed on the outer wall of the cylinder 4. The detection probe of the air pressure detector 18 extends into the cylinder 4 below the partition 9. The air pressure detector 18, the first electric push rod 13 and the second electric push rod 15 are all electrically connected to the controller 17.

[0020] When the PVC pipe is extruded and fed, it is only necessary to operate the vacuum pump 8 to evacuate the cylinder 4 of the vacuum feeder 1 through the vacuum tube 5 to form a negative pressure in the cylinder 4. Under the action of the negative pressure, the material in the material box 3 can be automatically pumped into the cylinder 4 through the feeding tube 6, and discharged to the extruder 2 through the discharge tube 7 to realize the extrusion feeding operation. During the feeding process, the first isolation mesh cover 11 and the second isolation mesh cover 12 with decreasing apertures can cooperate with each other to form a two-level effective isolation protection for the vacuum tube 5, which can greatly enhance the blocking ability of the material, and can more effectively prevent the material from being pumped into the vacuum tube 5 under the action of negative pressure, thereby more effectively avoiding the blockage of the vacuum tube 5. At the same time, the air pressure detector 18 can detect the internal air pressure of the cylinder 4 below the partition 9 in real time and feed back the air pressure information to the controller 17. When the first isolation mesh cover 11 and / or the second isolation mesh cover 12 are blocked during long-term use, causing the air pressure below the partition 9 to be abnormal, so that the air pressure inside the cylinder 4 below the partition 9 is higher than the set warning value, the controller 17 can automatically control the start of the first electric push rod 13 and / or the second electric push rod 15, and through the extension and contraction of the telescopic ends of the first electric push rod 13 and / or the second electric push rod 15, the corresponding first striking plate 14 and / or the second striking plate 16 are driven to strike the corresponding first isolation mesh cover 11 and the second isolation mesh cover 12 back and forth for many times, so as to realize the automatic beating and clearing of the two-stage isolation mesh covers, and ensure the smooth progress of the vacuum feeding operation. In addition, the detachable connection between the feeding pipe 6 and the material box 3 and the detachable connection between the feeding pipe 7 and the extruder 2 make the entire vacuum feeder 1 flexible to disassemble and assemble, so as to facilitate the overall convenient replacement when necessary, making the device more practical as a whole. The extruder 2, the controller 17 and the air pressure detector 18 can all adopt the existing technology.

[0021] In this embodiment, the rear end of the feeding tube 6 is fixedly connected with a telescopic bellows 19, and the rear end of the telescopic bellows 19 is connected with the discharge port of the material box 3 through a quick connector 20, so that in actual use, the feeding tube 6 can be quickly connected and disconnected with the material box 3 through the cooperation of the telescopic bellows 19 and the quick connector 20, so as not to affect the disassembly, assembly and replacement of the entire vacuum feeding machine 1. The quick connector 20 can adopt the existing technology, which is generally composed of a male head and a female head. When in use, it is only necessary to preset the male head or the female head on the rear end of the telescopic bellows 19, and then preset the corresponding female head or the male head on the discharge port of the material box 3, and then it can be used in combination.

[0022] In this embodiment, a fixing plate 21 is vertically fixedly connected to the outer bottom of the barrel 4 on the left and right sides of the feed tube 7, and a plurality of fixed through holes 22 are provided on the fixing plate 21. The feed port of the extruder 2 is fixedly connected to a feed pipe 23, and a square support plate 24 is fixedly sleeved on the outer side of the feed pipe 23. A mounting box 25 is fixedly provided on the top of the support plate 24 on the left and right sides of the feed pipe 23, and a plurality of locking through holes 26 are provided on the top of the open mounting box 25 and the left and right sides. A hydraulic cylinder 27 is fixedly provided on the left and right sides of the support plate 24, and the piston rod of the hydraulic cylinder 27 faces the mounting box 25 on the same side and is fixedly connected to a movable plate 28, and a plurality of fixing rods 29 are fixedly provided on the side of the movable plate 28 close to the mounting box 25 on the same side. The feeding tube 7 is inserted into the inner side of the feeding tube 23, the fixed plate 21 is inserted into the mounting box 25 on the same side, the movable plate 28 is abutted against the outer side of the mounting box 25 on the same side, and the fixing rod 29 corresponds to the fixing through hole 22 and the locking through hole 26 on the same side one by one, and the fixing rod passes through the corresponding fixing through hole 22 and the locking through hole 26, so that in actual use, when the vacuum feeder 1 needs to be replaced, it is only necessary to disconnect the connection between the feeding tube 6 and the material box 3 by the cooperation of the quick connector 20 and the telescopic bellows 19 in the shutdown state, and then operate the two hydraulic cylinders 27 to shrink the piston rods and drive the movable plate 28 to retreat until the fixing rod 29 is pulled out of the mounting box 25, so as to release the plug-in fixation of the fixing plate 21, and then pull out the fixing plate 21, so that the original vacuum feeder 1 can be disassembled. Next, after taking out the new vacuum feeder 1, first align the feed pipe 7 and the two fixed plates 21 with the corresponding feed pipe 23 and the installation box 25 and plug them into place to achieve the preliminary positioning and installation of the vacuum feeder 1. After that, run the two hydraulic cylinders 27 again to extend their piston rods, drive the movable plate 28 to move, until the movable plate 28 presses against the side of the corresponding installation box 25, and the fixed rod 29 can pass through the corresponding fixed through hole 22 and the locking through hole 26 to the other side of the installation box 25, so as to plug and fix the fixed plate 21, and achieve the fixed installation of the vacuum feeder 1, and the installation is stable and does not affect the subsequent use. Finally, through the cooperation of the telescopic bellows 19 and the quick connector 20 again, connect the feed pipe 6 to the material box 3, and then connect the vacuum feeder 1 to the power supply, and it can be used. In this way, the vacuum feeder 1 can be flexibly and conveniently disassembled and replaced as a whole, which is more convenient and practical.

[0023] In this embodiment, the feed pipe 7 is matched with the feed pipe 23 to ensure smooth plug-in connection between the two.

[0024] In this embodiment, the fixing plate 21 is matched with the corresponding installation box 25 to ensure that the two are plugged and fixed smoothly.

[0025] In this embodiment, the fixing rod 29 is matched with the corresponding fixing through hole 22 and locking through hole 26 to ensure that the fixing rod 29 can be smoothly inserted into place, thereby achieving the insertion and fixation of the fixing plate 21 .

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum pumping device with automatic cleaning for PVC pipe production, comprising a vacuum feeder, an extruder and a material box, characterized in that: The vacuum feeder comprises a cylinder, the top of which is connected to a vacuum tube, the lower side wall of which is connected to a feeding tube, the bottom of which is in an inverted cone shape and coaxially connected to a feeding tube, the tail end of the vacuum tube is connected to an air intake port of a vacuum pump fixedly arranged on the top of the cylinder, the tail end of the feeding tube is detachably connected to a discharge port of a material box, the tail end of the feeding tube is detachably connected to a feed port of an extruder, a partition is fixedly arranged in the upper part of the cylinder, a circular hole is opened in the center of the partition, a first isolation mesh cover is fixedly arranged at the bottom of the partition corresponding to the circumference of the circular hole, and a second isolation mesh cover is fixedly arranged at the top of the corresponding partition, the first isolation mesh cover and the second isolation mesh cover are both hemispherical and the hole of the first isolation mesh cover The diameter of the cylinder body is larger than the aperture of the second isolation mesh cover, the left and right side walls of the cylinder body below the first isolation mesh cover are both obliquely penetrated and fixedly provided with a first electric push rod, the telescopic end of the first electric push rod faces the first isolation mesh cover and is fixedly connected with a first striking plate, the left and right side walls of the cylinder body above the second isolation mesh cover are both obliquely penetrated and fixedly provided with a second electric push rod, the telescopic end of the second electric push rod faces the second isolation mesh cover and is fixedly connected with a second striking plate, a controller and an air pressure detector are fixedly provided on the outer side wall of the cylinder body, the detection probe of the air pressure detector extends into the cylinder body below the partition, and the air pressure detector, the first electric push rod and the second electric push rod are all electrically connected to the controller.

2. The automatic vacuum pumping device for PVC pipe production according to claim 1, characterized in that: The tail end of the feeding pipe is fixedly connected with a telescopic bellows, and the tail end of the telescopic bellows is connected with the discharge port of the material box through a quick connector.

3. The automatic vacuum pumping device for PVC pipe production according to claim 1, characterized in that: A fixing plate is vertically fixedly connected to the outer bottom of the cylinder body on both sides of the down pipe, and a plurality of fixing through holes are opened on the fixing plate. The feed port of the extruder is fixedly connected to the feed pipe, and a square support plate is fixedly sleeved on the outer side of the feed pipe. A mounting box is fixedly arranged on the top of the support plate on both sides of the feed pipe, and a plurality of locking through holes are opened on the top open and the left and right sides of the mounting box. A hydraulic cylinder is fixedly mounted on the left and right sides of the support plate, and the piston rod of the hydraulic cylinder faces the mounting box on the same side and is fixedly connected to a movable plate. A plurality of fixing rods are fixedly arranged on a side of the movable plate close to the mounting box on the same side. The down pipe is inserted into the inner side of the feed pipe, and the fixing plate is inserted into the mounting box on the same side. The movable plate abuts against the outer side of the mounting box on the same side. The fixing rod corresponds to the fixing through holes and the locking through holes on the same side one by one, and the fixing rod passes through the corresponding fixing through holes and the locking through holes.

4. The automatic vacuum pumping device for PVC pipe production according to claim 3, characterized in that: The feed pipe is matched with the feed pipe.

5. The automatic cleaning vacuum pumping device for PVC pipe production according to claim 3, characterized in that: The fixing plate is matched with the corresponding installation box.

6. The automatic vacuum pumping device for PVC pipe production according to claim 3, characterized in that: The fixing rod is matched with the corresponding fixing through hole and locking through hole.

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