Vacuum chamber structure with backflow prevention function for plastic extruder

Abstract

The utility model relates to the technical field of plastic extruder equipment, and discloses a vacuum chamber structure with an anti-backflow function for a plastic extruder, which comprises a working plate, the left side of the top wall of the working plate is fixedly connected with an injection box, the right side of the injection box is communicated with an injection valve, and the left side of the injection box is communicated with a connecting pipe. And the left end of the connecting pipe communicates with extrusion equipment, the left end of the extrusion equipment communicates with a machine barrel shell, the left side of the top wall of the machine barrel shell communicates with a connecting plate, the middle of the connecting plate is fixedly connected with a material blocking shell, and the top wall of the connecting plate is fixedly connected with a fixing seat. According to the utility model, the top of the material blocking shell penetrates through the interior of the fixed seat, and the outlet of the material blocking shell is higher than the fixed seat, so that the formed condensate water flows back to the inner bottom wall of the vacuum chamber and is further sucked away by the vacuum pump, and the condition that the condensate water flows back to the barrel of the plastic extruder to cause the quality problem of a product is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic extruder equipment, in particular to a vacuum chamber structure with an anti-backflow function for a plastic extruder. Background Art

[0002] A plastic extruder is a device used to process plastic materials into continuous, usable shapes or products. It is widely used in the plastics industry to produce various plastic products such as pipes, profiles, films and granules. The molten plastic is pushed by the rotation of the screw and flows through the mold of the extruder. The mold shapes the melt into a specific shape. A vacuum chamber is required for use during processing and production.

[0003] After searching, the Chinese patent publication number is: CN211640926U, which discloses a vacuum pump device for a twin-screw extruder. The vacuum pump is connected to the first air outlet of the vacuum chamber. The side wall of the filter box is penetrated by a first perforation and a second perforation. The first air inlet of the vacuum chamber is connected to the first perforation. The cooling tank is penetrated by a third perforation, a fourth perforation, and a fifth perforation. The condenser is arranged in the cooling tank. The condenser is arranged in an N-shaped manner and has a first branch pipe and a second branch pipe extending in an up-down direction. One end of the second air guide pipe is connected to the second perforation, and the other end passes through the third perforation to connect to the first branch pipe. One end of the third air guide pipe passes through the fourth perforation to connect to the second branch pipe, and the other end is used to connect to the second air outlet of the twin-screw extruder. The lower ends of the first and second branches are connected to one end of the first water guide pipe. The other end of the first water guide pipe passes through the fifth perforation and is located outside the cooling tank. The beneficial effect of the technical solution proposed by this utility model is to prevent droplets formed by condensation of volatiles in the vacuum chamber from flowing back into the barrel and contaminating other substances. However, in actual use, the high-temperature water vapor generated by the device will contact the wall of the vacuum chamber to form condensed water that will flow back into the barrel of the plastic extruder, causing quality problems such as discoloration and black spots on the product, and ultimately causing the product to be unqualified. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a vacuum chamber structure with anti-backflow function for a plastic extruder, aiming to improve the problem that the high-temperature water vapor generated by the device contacts the wall of the vacuum chamber to form condensed water which flows back into the barrel of the plastic extruder, causing quality problems such as discoloration and black spots in the product, and ultimately resulting in unqualified products.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vacuum chamber structure with an anti-backflow function for a plastic extruder, comprising a working plate, the left side of the top wall of the working plate is fixedly connected to an injection box, the right side of the injection box is connected to an injection valve, the left side of the injection box is connected to a connecting pipe, the left end of the connecting pipe is connected to an extrusion device, the left end of the extrusion device is connected to an organic barrel shell, the left side of the top wall of the barrel shell is connected to a connecting plate, the middle part of the connecting plate is fixedly connected to a material blocking shell, the top wall of the connecting plate is fixedly connected to a fixing seat, the top wall of the fixing seat is fixedly connected to a vacuum shell, the top wall of the vacuum shell is fixedly installed with a sealing plate, the front side of the vacuum shell is connected to an extraction pipe, the left side of the barrel shell is connected to a connecting port, and a fixing mechanism is provided on the left side of the working plate, and the fixing mechanism is used to improve the stability of the device during operation.

[0006] Through the above technical solution: the outlet at the top of the material retaining shell is made higher than the fixed seat, so that the high-temperature water vapor contacts the inner wall of the vacuum chamber to form condensed water, which will flow back to the inner bottom wall of the vacuum chamber, and then the condensed water can be sucked away by the vacuum pump, avoiding the situation where the condensed water flows back into the barrel of the plastic extruder and causes quality problems in the product.

[0007] As a further description of the above technical solution:

[0008] The fixing mechanism includes a support plate, the right side of the support plate is fixedly connected to the left side of the working plate, the top wall of the support plate is fixedly connected to multiple fixing plates, the top wall of the fixing plate is fixedly connected to a mounting plate, one side of the mounting plate is fixedly connected to a swing cylinder, one end of the swing cylinder is fixedly connected to a rotating rod, the top end of the rotating rod is rotatably connected to a clamping plate through a torsion spring, and the top end of the clamping plate is fixedly connected to a fixing clamp.

[0009] Through the above technical solution: under the operation of the swing cylinder, the rotating rod drives the clamp connected by the torsion spring to rotate, so that the clamp can fit one side of the barrel shell, and then the fixing clamp can fix the barrel shell, thereby reducing the shaking generated when the extrusion equipment is working.

[0010] As a further description of the above technical solution:

[0011] The fixing mechanism further comprises two rubber pads, and the sides of the two rubber pads that are away from each other are respectively fixedly connected to the adjacent sides of the corresponding clamping plates, and the adjacent sides of the two rubber pads are both provided with grooves.

[0012] Through the above technical solution, the rubber pad improves the static friction between the fixing clamp and the clamping plate, thereby improving the fixing effect on the barrel shell.

[0013] As a further description of the above technical solution:

[0014] A control switch is fixedly connected to the rear side of the injection box, and the control switch is electrically connected to the extrusion equipment and the swing cylinder respectively.

[0015] Through the above technical solution, the control switch can complete the opening and closing of the device.

[0016] As a further description of the above technical solution:

[0017] A plurality of protection strips are fixedly connected to the front and rear sides of the injection box, and the plurality of protection strips are arranged at equal intervals.

[0018] Through the above technical solution, the protection strip can protect the front and rear sides of the injection box, reducing the possibility of injury.

[0019] As a further description of the above technical solution:

[0020] A sealing ring is fixedly installed on the left side of the outer wall of the barrel shell, and the shape of the sealing ring adopts a ring design.

[0021] Through the above technical solution, the sealing ring can effectively improve the sealing performance of the connection port during connection.

[0022] As a further description of the above technical solution:

[0023] The front and rear sides of the working plate and the front and rear sides of the supporting plate are fixedly connected with connecting seats, and a plurality of connecting seats are provided with mounting grooves inside.

[0024] The above technical solution makes it easier to install and fix the structure.

[0025] As a further description of the above technical solution:

[0026] The front and rear sides of the top wall of the support plate are both provided with inclined surfaces, and the plurality of fixing plates are all provided with an inclined angle.

[0027] Through the above technical solution, it is convenient for the fixing mechanism to stably clamp the mechanism, thereby improving the stabilization effect.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, the top of the material-blocking shell passes through the interior of the fixing seat so that its outlet is higher than the fixing seat, so that after the material-blocking port and the vacuum chamber are installed, the vacuum port is higher than the bottom, so that high-temperature water vapor contacts the inner wall of the vacuum chamber to form condensed water, so that the formed condensed water will flow back to the inner bottom wall of the vacuum chamber and then be sucked away by the vacuum pump through the extraction pipe, so as to avoid the condensed water from flowing back into the barrel of the plastic extruder and causing quality problems of the product, thereby improving the product processing quality.

[0030] 2. In the utility model, the swing cylinder is started to rotate the rotating rod, thereby rotating the splint connected by the torsion spring, so that the splint can rotate in close contact with the barrel shell, so that multiple fixing clamps synchronously complete the fixed clamping of the barrel shell, thereby reducing the shaking generated by the extrusion equipment during operation, thereby ensuring stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a cross-sectional view of a vacuum housing of a vacuum chamber structure with an anti-backflow function for a plastic extruder proposed by the present invention;

[0032] Figure 2 This is a three-dimensional diagram of a vacuum chamber structure with an anti-backflow function for a plastic extruder proposed by the utility model;

[0033] Figure 3 This is a structural schematic diagram of a barrel shell with a vacuum chamber structure having an anti-backflow function for a plastic extruder proposed in the utility model;

[0034] Figure 4 This is a top view of a vacuum chamber structure with an anti-backflow function for a plastic extruder proposed by the utility model;

[0035] Figure 5 This is a schematic diagram of a fixing mechanism of a vacuum chamber structure with an anti-backflow function for a plastic extruder proposed by the utility model.

[0036] Legend:

[0037] 1. Working plate; 2. Fixing mechanism; 201. Support plate; 202. Fixing plate; 203. Mounting plate; 204. Swinging cylinder; 205. Rotating rod; 206. Clamp; 207. Fixing clamp; 208. Rubber pad; 3. Injection box; 4. Injection valve; 5. Connecting pipe; 6. Extrusion equipment; 7. Extraction pipe; 8. Cylinder shell; 9. Connecting plate; 10. Material retaining shell; 11. Fixing seat; 12. Vacuum shell; 13. Sealing plate; 14. Connecting port; 15. Sealing ring; 16. Control switch; 17. Protective strip; 18. Connecting seat; 19. Mounting groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0039] Reference Figure 1 、 Figure 3 and Figure 4 The utility model provides an embodiment of a vacuum chamber structure with an anti-backflow function for a plastic extruder, comprising a working plate 1, a top wall of the working plate 1 is fixedly connected to an injection box 3 on the left side, the right side of the injection box 3 is connected to an injection valve 4, the left side of the injection box 3 is connected to a connecting pipe 5, the left end of the connecting pipe 5 is connected to an extrusion device 6, the left end of the extrusion device 6 is connected to an organic barrel shell 8, the left side of the top wall of the barrel shell 8 is connected to a connecting plate 9, the middle part of the connecting plate 9 is fixedly connected to a material blocking shell 10, the top wall of the connecting plate 9 is fixedly connected to a fixing seat 11, the top wall of the fixing seat 11 is fixedly connected to a vacuum shell 12, the top wall of the vacuum shell 12 is fixedly installed with a sealing plate 13, the front side of the vacuum shell 12 is connected to an extraction pipe 7, the left side of the barrel shell 8 is connected to a connecting port 14, a fixing mechanism 2 is provided on the left side of the working plate 1, and the fixing mechanism 2 is used to improve the stability of the device during operation;

[0040] After the condensed water accumulates on the inner bottom wall of the vacuum shell 12, it will be sucked away in time by the vacuum pump connected through the extraction pipe 7, effectively preventing the condensed water from flowing back into the plastic extruder barrel 8 and causing product quality problems.

[0041] Reference Figure 2 、 Figure 3 and Figure 5 The fixing mechanism 2 includes a support plate 201, the right side of the support plate 201 is fixedly connected to the left side of the working plate 1, the top wall of the support plate 201 is fixedly connected to a plurality of fixing plates 202, the top wall of the fixing plate 202 is fixedly connected to the mounting plate 203, one side of the mounting plate 203 is fixedly connected to a swing cylinder 204, one end of the swing cylinder 204 is fixedly connected to a rotating rod 205, the top of the rotating rod 205 is rotatably connected to the rear splint 206 through a torsion spring, and the top of the splint 206 is fixedly connected to a fixing clamp 207; the fixing mechanism 2 also includes two rubber pads 208, the two rubber pads 208 have their sides away from each other fixedly connected to the adjacent side of the corresponding splint 206, and the adjacent sides of the two rubber pads 208 are provided with grooves;

[0042] Specifically, the swing cylinder 204 is started, and the rotating rod 205 begins to rotate, thereby driving the splint 206 connected to it by a torsion spring, ensuring that the splint 206 is always tightly attached to the outer wall 8 of the barrel shell, so that the splint 206 can adapt to the shape and size changes of the barrel shell to achieve fit, and the multiple fixing clamps 207 fixedly connected to the splint 206 move synchronously under the drive of the rotating rod, thereby enhancing the fixing effect and effectively suppressing the shaking that may be generated by the extrusion equipment 6 during operation, thereby improving the working stability of the equipment, and the two rubber pads 208 improve the anti-slip effect of the splint 206 and the fixing clamp 207, thereby increasing their static friction.

[0043] Reference Figure 2 、 Figure 4 and Figure 5 , the rear side of the injection box 3 is fixedly connected to a control switch 16, and the control switch 16 is electrically connected to the extrusion device 6 and the swing cylinder 204 respectively; the front and rear sides of the injection box 3 are fixedly connected to a plurality of protective strips 17, and the plurality of protective strips 17 are arranged equidistantly; the front and rear sides of the working plate 1 and the front and rear sides of the support plate 201 are fixedly connected to connecting seats 18, and the interiors of the plurality of connecting seats 18 are provided with mounting grooves 19;

[0044] Specifically, through the control switch 16 electrically connected to the extrusion equipment 6 and the swing cylinder 204 respectively, the control switch 16 can turn the device on and off, through multiple protective strips 17, both sides of the injection box 3 can be protected, and through the connecting seat 18 and the installation groove 19, the structure can be easily installed.

[0045] Reference Figure 3 and Figure 5 , a sealing ring 15 is fixedly installed on the left side of the outer wall of the barrel shell 8, and the shape of the sealing ring 15 adopts a ring-shaped design; the front and rear sides of the top wall of the support plate 201 are provided with inclined surfaces, and the multiple fixing plates 202 are provided with an inclined angle;

[0046] Specifically, the sealing ring 15 improves the sealing performance of the connection port 14 during connection, and the front and rear sides of the top wall of the support plate 201 are both provided with inclined surfaces, making it easier for the fixing mechanism 2 to fix the barrel shell 8.

[0047] Working principle: When starting to use, by connecting the injection valve 4, add material into the injection box 3, and then start the extrusion equipment 6, so that the device starts to work, and then the high-temperature water vapor will form condensed water when it contacts the inner wall of the vacuum shell 12. Since the top of the material-blocking shell 10 passes through and is fixedly connected to the inner wall of the fixing seat 11, the horizontal height at the outlet of the material-blocking shell 10 is higher than the inner bottom wall of the fixing seat 11. Then, when the material-blocking shell 10 and the vacuum shell 12 are installed, the top of the material-blocking shell 10 will be higher than the bottom of the vacuum shell 12, so that the condensed water formed will flow back to the inner bottom wall of the vacuum shell 12, and then the condensed water will be sucked away by the vacuum pump through the extraction pipe 7, avoiding cold The condensed water flows back into the barrel of the plastic extruder, causing quality problems of the product, thereby improving the product processing quality and the yield rate, and by starting the swing cylinder 204, the rotating rod 205 and the clamping plate 206 connected at one end are rotated. Since the clamping plate 206 is rotatably connected to the rotating rod 205 by a torsion spring, the clamping plate 206 can fit the outer wall 8 of the barrel shell, so that the multiple fixing clamps 207 fixedly connected to the clamping plate 206 synchronously complete the fixed clamping of the outer wall of the barrel shell 8, thereby reducing the shaking generated by the extrusion equipment 6 and the barrel shell 8 during operation, thereby ensuring stability during operation and improving work efficiency.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vacuum chamber structure with an anti-backflow function for a plastic extruder, comprising a working plate (1), characterized in that: The left side of the top wall of the working plate (1) is fixedly connected to an injection box (3), the right side of the injection box (3) is connected to an injection valve (4), the left side of the injection box (3) is connected to a connecting pipe (5), the left end of the connecting pipe (5) is connected to an extrusion device (6), the left end of the extrusion device (6) is connected to an organic barrel shell (8), the left side of the top wall of the barrel shell (8) is connected to a connecting plate (9), the middle part of the connecting plate (9) is fixedly connected to a material blocking shell (10), the top wall of the connecting plate (9) is fixedly connected to a fixing seat (11), the top wall of the fixing seat (11) is fixedly connected to a vacuum shell (12), the top wall of the vacuum shell (12) is fixedly installed with a sealing plate (13), the front side of the vacuum shell (12) is connected to an extraction pipe (7), the left side of the barrel shell (8) is connected to a connecting port (14), and the left side of the working plate (1) is provided with a fixing mechanism (2), the fixing mechanism (2) is used to improve the stability of the device during operation.

2. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 1, characterized in that: The fixing mechanism (2) comprises a support plate (201), the right side of the support plate (201) is fixedly connected to the left side of the working plate (1), the top wall of the support plate (201) is fixedly connected to a plurality of fixing plates (202), the top wall of the fixing plate (202) is fixedly connected to a mounting plate (203), one side of the mounting plate (203) is fixedly connected to a swing cylinder (204), one end of the swing cylinder (204) is fixedly connected to a rotating rod (205), the top end of the rotating rod (205) is rotatably connected to a rear clamping plate (206) via a torsion spring, and the top end of the clamping plate (206) is fixedly connected to a fixing clamp (207).

3. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 2, characterized in that: The fixing mechanism (2) further comprises two rubber pads (208), with the two rubber pads (208) having their sides facing away from each other fixedly connected to the adjacent sides of the corresponding clamping plates (206), and the adjacent sides of the two rubber pads (208) are both provided with grooves.

4. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 2, characterized in that: A control switch (16) is fixedly connected to the rear side of the injection box (3), and the control switch (16) is electrically connected to the extrusion device (6) and the swing cylinder (204) respectively.

5. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 1, characterized in that: A plurality of protection strips (17) are fixedly connected to the front and rear sides of the injection box (3), and the plurality of protection strips (17) are arranged at equal distances.

6. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 1, characterized in that: A sealing ring (15) is fixedly mounted on the left side of the outer wall of the barrel shell (8), and the outer shape of the sealing ring (15) is annular.

7. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 2, characterized in that: The front and rear sides of the working plate (1) and the front and rear sides of the support plate (201) are fixedly connected with connecting seats (18), and a plurality of connecting seats (18) are provided with mounting grooves (19) inside.

8. The vacuum chamber structure with anti-backflow function for a plastic extruder according to claim 2, characterized in that: The front and rear sides of the top wall of the support plate (201) are both provided with inclined surfaces, and the plurality of fixing plates (202) are all provided with an inclined angle.

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