Vacuumizing device for plastic production

Abstract

The utility model discloses a vacuumizing device for plastic production, which comprises an exhaust pipe, and an air inlet and an air extraction opening are respectively formed in two ends of the exhaust pipe; the filter screen is connected into the exhaust pipe; the vacuumizing piece is connected to the extraction opening; the cleaning mechanism comprises a flushing part and a recycling part, the flushing part and the recycling part are connected into the exhaust pipe, the flushing part is located on the side, close to the extraction opening, of the filter screen and faces the filter screen, the recycling part is located on the side, close to the air inlet, of the filter screen, and the recycling part is used for recycling the cleaning liquid obtained after the filter screen is flushed. According to the filter screen cleaning device, the filter screen is washed and cleaned, filtered objects of the filter screen can be rapidly and effectively washed, the cleaning effect of the filter screen is achieved, and the filtering effect and the ventilation effect of the filter screen are kept.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, in particular to a vacuum pumping device for plastic production. Background Art

[0002] The screw extruder is one of the most important devices for plastic processing. Through the transmission of external power and the heat transfer of external heating elements, the solid conveying, compaction, melting, shearing and mixing of the resin are carried out for extrusion molding. The extruder relies on the pressure and shear force generated by the rotation of the screw, which can make the material fully plasticized and evenly mixed, and then press the material into the molding die to solidify into a product. Since there are many air bubbles inside the material after melting, in order to improve the quality of the product, it is necessary to discharge the air bubbles, so a vacuum pumping device is needed. The vacuum pumping device can suck out the air bubbles mixed in the material and fully discharge the air.

[0003] In the existing vacuum pumping device, a filter screen is usually provided to filter out the materials mixed in the air and make the discharged air not pollute the environment. However, due to long-term use, with the accumulation and blockage of the filter, the filter screen will have the problem of poor filtering effect, resulting in the influence of the filtering effect and ventilation effect of the filter screen. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the problems in the related art to some extent. For this reason, one of the purposes of the utility model is to provide a vacuum pumping device for plastic production, which is used to realize the flushing and cleaning of the filter screen, can quickly and effectively flush the filter of the filter screen, realize the cleaning effect of the filter screen, and maintain the filtering effect and ventilation effect of the filter screen.

[0005] A vacuum pumping device for plastic production, the vacuum pumping device for plastic production includes:

[0006] An exhaust pipe, with an air inlet and an air extraction port at both ends of the exhaust pipe;

[0007] A filter screen, which is connected inside the exhaust pipe;

[0008] A vacuum pumping member, which is connected to the air extraction port;

[0009] A cleaning mechanism, which includes a flushing member and a recycling member. The flushing member and the recycling member are connected inside the exhaust pipe. The flushing member is located on the side of the filter screen close to the air extraction port and is arranged towards the filter screen. The recycling member is located on the side of the filter screen close to the air inlet, and the recycling member is used to recycle the cleaning liquid after flushing the filter screen.

[0010] Further, the cleaning mechanism further includes a water pump and a water tank. Both the water pump and the water tank are connected to the outer surface of the exhaust pipe. One end of the water pump communicates with the water tank, and the other end communicates with the flushing member.

[0011] Further, the flushing member is a water outlet pipe. The water outlet pipe extends along the extending direction of the exhaust pipe, and a plurality of spaced water outlet holes are provided along its extending direction.

[0012] Further, the flushing member is a spray head. The flushing member is connected to the inner side of the exhaust pipe near the air extraction port.

[0013] Further, the number of the flushing members is two, and the two flushing members are respectively arranged on the opposite sides of the inner wall of the exhaust pipe.

[0014] Further, a sewage discharge port is provided on the exhaust pipe between the filter screen and the air inlet. The recovery member movably passes through the sewage discharge port. The cleaning mechanism further includes a rotating shaft and a baffle. The rotating shaft is connected to the edge of the sewage discharge port near the air inlet, and the baffle is rotatably connected to the rotating shaft. The baffle rotates to open or close the sewage discharge port.

[0015] Further, the cleaning mechanism further includes an elastic member. The rotation center of the elastic member is sleeved on the rotating shaft. One end of the elastic member is fixedly connected to the rotating shaft, and the other end abuts against the baffle.

[0016] Further, the recovery member includes a main body and a guiding member. The guiding member is formed with a guiding groove, and the guiding member is connected to the side surface of the main body.

[0017] Further, the cleaning mechanism further includes a slide rail and a slider. The slide rail is arranged in the exhaust pipe and extends along the radial direction of the exhaust pipe. One end of the slider is slidably connected to the slide rail, and the other end is connected to the recovery member. The recovery member slides in and out of the sewage discharge port along the slide rail.

[0018] Further, a clamping groove is recessed on the side surface of the slide rail facing the recovery member near the sewage discharge port. The shape of the side surface of the slider is adapted to the recessed shape of the clamping groove, and the slider rotates to be clamped in the clamping groove.

[0019] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0020] By providing a cleaning mechanism, the flushing member is arranged on the side of the filter screen near the air extraction port. Using the principle of back flushing, the filter screen is flushed and cleaned, and the filter substances on the filter screen can be quickly and effectively flushed clean, achieving the cleaning effect of the filter screen and maintaining the filtering effect and ventilation effect of the filter screen.

[0021] By providing a recycling component, the filtered matter after rinsing can be collected in the recycling component, enabling centralized treatment of the filtered matter after rinsing and capable of receiving the water source for backflushing treatment, reducing waste of water resources and improving environmental protection. Description of the Drawings

[0022] The drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present utility model and used together with the specification to explain the principles of the present utility model.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] In the drawings:

[0025] Figure 1 is a schematic structural diagram of an embodiment of a vacuum pumping device for plastic production in this application in a working state;

[0026] Figure 2 is a schematic structural diagram of an embodiment of a vacuum pumping device for plastic production in this application in a state of cleaning the filter screen;

[0027] Figure 3 is a schematic structural diagram of another embodiment of a vacuum pumping device for plastic production in this application in a state of cleaning the filter screen;

[0028] Figure 4 is a schematic structural diagram of yet another embodiment of a vacuum pumping device for plastic production in this application in a working state;

[0029] Figure 5 is a schematic structural diagram of yet another embodiment of a vacuum pumping device for plastic production in this application in a state of cleaning the filter screen;

[0030] Figure 6 is a schematic structural diagram of the installation of the vacuum pumping device for plastic production in this application and an extruder.

[0031] Reference numerals: 1, a vacuum pumping device for plastic production; 10, an exhaust pipe; 11, an air inlet; 13, an air extraction port; 15, a sewage discharge port; 30, a filter screen; 50, a vacuum pumping member; 70, a cleaning mechanism; 71, a rinsing member; 72, a recycling component; 721, a main body; 723, a guiding member; 73, a water pump; 74, a water tank; 75, a rotating shaft; 76, a baffle; 77, an elastic member; 78, a slide rail; 781, a clamping groove; 79, a slider. Detailed Description of the Embodiments

[0032] In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0034] As Figure 1 - Figure 6 shown, a vacuum pumping device 1 for plastic production provided by the present application includes:

[0035] An exhaust pipe 10, with two ends of the exhaust pipe 10 being an air inlet 11 and an air extraction port 13 respectively;

[0036] A filter screen 30, connected inside the exhaust pipe 10;

[0037] A vacuum pumping member 50, connected to the air extraction port 13;

[0038] A cleaning mechanism 70, including a flushing member 71 and a recycling member 72. The flushing member 71 and the recycling member 72 are connected inside the exhaust pipe 10. The flushing member 71 is located on the side of the filter screen 30 close to the air extraction port 13 and is arranged towards the filter screen 30. The recycling member 72 is located on the side of the filter screen 30 close to the air inlet 11, and the recycling member 72 is used to recycle the cleaning liquid after flushing the filter screen 30.

[0039] When the user needs to rinse and clean the filter 30, the recovery part 72 is movably placed in the exhaust pipe 10 to ensure that the recovery part 72 fits tightly against the inner wall of the exhaust pipe 10 to prevent the cleaning liquid from leaking out. Subsequently, the flushing part 71 is started, and a high-pressure water flow is ejected from the flushing part 71 to directly flush the surface of the filter 30. This strong water flow can not only effectively remove the dirt and particulate matter on the filter 30, but also flush out the impurities deep in the filter 30. When the high-pressure water flow flushes the filter 30, the generated sewage and cleaning liquid will flow along the filter 30 to the recovery part 72. During the entire cleaning process, the user can observe the color and clarity of the cleaning liquid in the recovery part 72 in real time. Once the cleaning liquid becomes turbid or the color deepens, it means that the dirt in the filter 30 has been flushed out. At this time, the user can pause flushing and wait for the cleaning liquid in the recovery part 72 to be filtered clean before continuing to flush. After several flushing and filtering, the dirt on the filter screen 30 is completely removed, and the cleaning liquid in the recovery part 72 is also restored to clarity, which proves that the filter screen 30 is clean and the cleaning effect of the filter screen 30 is achieved.

[0040] Optionally, both the flushing member 71 and the recovery member 72 can be set to a detachable connection mode, and the recovery member 72 can be connected to the flushing member 71 to form a circulation system to achieve the recycling of the cleaning liquid. After cleaning, the user can take the recovery member 72 out of the exhaust pipe 10, pour out the cleaning liquid, and then reinstall the recovery member 72 and the flushing member 71 for next use. The design of this cleaning mechanism 70 not only improves the cleaning efficiency, but also reduces the cleaning cost. At the same time, since the recovery member 72 can recycle and filter the cleaning liquid, the cleaning process is more environmentally friendly and energy-saving.

[0041] Optionally, the design of the recovery part 72 is unique, and it adopts a multi-layer filter screen 30 structure, which can gradually filter out impurities in the sewage and recycle the cleaning liquid. At the same time, a liquid storage device is also provided inside the recovery part 72, which can store a certain amount of cleaning liquid to ensure the continuous flushing process.

[0042] Optionally, considering the frequency and convenience of cleaning the filter 30, the flushing part 71 and the recovery part 72 are both designed with quick connection and disconnection, such as buckles, latches, etc., so that users can easily install and remove them without complicated tools or steps. This not only improves the cleaning efficiency, but also reduces the difficulty of use for users.

[0043] Optionally, in order to ensure safety during the cleaning process, we add a pressure regulating device to the flushing member 71. This device can adjust the pressure of the water flow sprayed by the flushing member 71 according to the needs and actual conditions of the user. During the cleaning process, the user can select an appropriate flushing pressure according to the degree of dirt and material of the filter 30, which not only ensures the cleaning effect, but also avoids damage to the filter 30 due to excessive pressure.

[0044] Optionally, the cleaning mechanism 70 can also be equipped with an intelligent detection system. The intelligent detection system is arranged inside the recycling part 72. During the flushing process, the cleaning mechanism 70 will monitor the state of the cleaning liquid in real time, including parameters such as color and clarity. When the cleaning liquid reaches the preset replacement standard, the cleaning mechanism 70 will automatically issue an alarm to remind the user to replace the cleaning liquid. This function not only ensures the cleaning effect but also avoids secondary pollution to the filter screen 30 caused by expired or contaminated cleaning liquid.

[0045] Furthermore, the cleaning mechanism 70 further includes a water pump 73 and a water tank 74. Both the water pump 73 and the water tank 74 are connected to the outer surface of the exhaust pipe 10. One end of the water pump 73 communicates with the water tank 74, and the other end communicates with the flushing part 71.

[0046] In the cleaning mechanism 70, the operation of the water pump 73 is the core power of the cleaning process. It continuously transports the clear water in the water tank 74 to the flushing part 71 through the pipeline, ensuring that the flushing part 71 can continuously and stably release the cleaning water flow. And the water tank 74 is responsible for storing enough clear water to meet the continuously consumed water volume during the cleaning process.

[0047] To ensure the cleaning effect, a water level sensor is provided inside the water tank 74 to monitor the water volume in the water tank 74 in real time. Once the water volume is lower than the preset warning line, the sensor will immediately send a signal to the control system. The control system will then activate the alarm and automatically shut down the water pump 73 to avoid damage to the water pump 73 due to water shortage. At the same time, the control system will also remind the user to add water to the water tank 74 in time to ensure the continuous progress of the cleaning work.

[0048] In addition, to meet different cleaning requirements, the water pump 73 also has adjustable power and flow rate settings. Users can select appropriate power and flow rate according to factors such as the material of the cleaning object and the degree of stains to achieve the best cleaning effect. This flexibility enables the cleaning mechanism 70 to adapt to a wider range of usage scenarios, improving its practicality and convenience.

[0049] Furthermore, the flushing part 71 is a water outlet pipe. The water outlet pipe extends along the extension direction of the exhaust pipe 10, and a plurality of spaced-apart water outlet holes are provided along its extension direction.

[0050] In the design of the water outlet pipe, each water outlet hole is carefully calculated to ensure that during the exhaust process, the distribution of the water flow is uniform and efficient. These water outlet holes are not simple holes but adopt a special fluid mechanics design, which can minimize the water flow resistance and ensure the stability and continuity of the water flow at the same time. The water is discharged through a plurality of water outlet holes to clean the filter screen 30 to achieve the purpose of cleaning.

[0051] Furthermore, the flushing member 71 is a spray head, and the flushing member 71 is connected to the inner side of the exhaust pipe 10 near the air extraction port 13.

[0052] As the spray head is selected as the flushing member 71, the design of the spray head not only ensures the accuracy and efficiency of the flushing process, but also its connection method - connected to the inner side of the exhaust pipe 10 near the air extraction port 13, more cleverly solves the problem of cleaning the inside of the exhaust pipe 10.

[0053] When the flushing starts, the spray head will accurately spray the cleaning liquid or clean water into the area of the exhaust pipe 10 near the air extraction port 13. This area is often the part where impurities such as carbon deposits and oil stains accumulate most seriously, and it is also the key area affecting the exhaust efficiency. Through the strong flushing of the spray head, these stubborn impurities can be quickly removed, thus restoring the unobstructedness of the exhaust pipe 10.

[0054] In addition, the spray head is connected to the inner side of the exhaust pipe 10 near the air extraction port 13, which also helps to form an effective flushing cycle. During the flushing process, the flushing liquid will form a strong scouring force near the air extraction port 13, pushing the flushed impurities deeper into the exhaust pipe 10.

[0055] This design not only improves the flushing effect, but also ensures the safe operation of the exhaust pipe 10. During the cleaning process, the contact area between the spray head and the inner wall of the exhaust pipe 10 is small, reducing the damage caused by friction. At the same time, since the spray head is located near the air extraction port 13, the flushing liquid will not directly contact key components such as the engine, thus avoiding possible damage.

[0056] Furthermore, the number of the flushing members 71 is two, and the two flushing members 71 are respectively arranged on the opposite sides of the inner wall of the exhaust pipe 10.

[0057] With the assistance of these two flushing members 71, the cleaning efficiency of the exhaust system has been significantly improved. They are respectively located on the opposite sides of the inner wall of the exhaust pipe 10, ensuring that during the exhaust flow, the carbon deposits and impurities on the inner wall can be comprehensively and evenly removed.

[0058] Furthermore, a sewage discharge port 15 is provided on the exhaust pipe 10 between the filter screen 30 and the air inlet 11. The recycling member 72 is movably inserted through the sewage discharge port 15. The cleaning mechanism 70 further includes a rotating shaft 75 and a baffle 76. The rotating shaft 75 is connected to the edge of the sewage discharge port 15 near the air inlet 11, and the baffle 76 is rotatably connected to the rotating shaft 75. The baffle 76 rotates to open or close the sewage discharge port 15.

[0059] In the design of the sewage outlet 15, we have fully considered practicability and convenience. The sewage outlet 15 is not only convenient for cleaning and discharging accumulated dirt, but also ensures the normal operation of the filter screen 30 and the air inlet 11. When it is necessary to clean the accumulated dirt, the operator only needs to perform a simple operation to open and close the sewage outlet 15.

[0060] The design of the recovery part 72 is ingeniously arranged through the sewage outlet 15. It can not only effectively pick up and place the recovery part 72, but also be easy to take out and clean. The recovery part 72 is made of corrosion-resistant and easy-to-clean materials, ensuring its service life and cleaning efficiency.

[0061] The rotating shaft 75 and the baffle 76 in the cleaning mechanism 70 further add to the flexibility of the operation. The rotating shaft 75 is located at the side edge of the sewage outlet 15 close to the air inlet 11, enabling the baffle 76 to rotate around the rotating shaft 75. When sewage discharge is required, the operator only needs to gently rotate the baffle 76 to open the sewage outlet 15 and let the dirt drain smoothly. After the sewage discharge is completed, rotate the baffle 76 again to close the sewage outlet 15 and prevent external dust and impurities from entering. Or link the sewage outlet 15 with the recovery part 72. Pushing the recovery part 72 in can open the baffle 76, and pulling the recovery part 72 out can close the baffle 76.

[0062] This design not only improves work efficiency but also greatly reduces the labor intensity of the operator. At the same time, since the opening and closing of the sewage outlet 15 are both carried out through the baffle 76, it can ensure that during the cleaning process, the filter screen 30 and the air inlet 11 always remain sealed, avoiding equipment failures or safety accidents caused by leakage.

[0063] Furthermore, the cleaning mechanism 70 further includes an elastic member 77. The rotation center of the elastic member 77 is sleeved on the rotating shaft 75. One end of the elastic member 77 is fixedly connected to the rotating shaft 75, and the other end abuts against the baffle 76. The elastic member 77 can be a torsion spring, a spring, a spring sheet, etc. By using the elastic member 77, the effect of automatically resetting the baffle 76 to close the sewage outlet 15 can be achieved. Pushing the recovery part 72 in can open the baffle 76 and compress the elastic member 77. Pulling the recovery part 72 out, the elastic member 77 resumes, and the elastic force can automatically close the baffle 76.

[0064] Furthermore, the recovery part 72 includes a main body 721 and a diversion member 723. The diversion member 723 forms a diversion groove, and the diversion member 723 is connected to the side of the main body 721. The setting of the diversion member 723 and the diversion groove can guide the sewage discharge direction of the pollutants inside the main body 721, achieving directional discharge.

[0065] Further, the cleaning mechanism 70 further includes a slide rail 78 and a slider 79. The slide rail 78 is disposed in the exhaust pipe 10 and extends along the radial direction of the exhaust pipe 10. One end of the slider 79 is slidably connected to the slide rail 78, and the other end is connected to the recovery member 72. The recovery member 72 slides in and out of the sewage discharge port 15 along the slide rail 78. The arrangement of the slide rail 78 and the slider 79 can control the moving direction and moving distance of the recovery member 72. During the process of the slider 79 sliding along the slide rail 78, the recovery member 72 can accurately enter and exit the sewage discharge port 15, quickly and effectively removing the accumulated dirt.

[0066] Further, a clamping groove 781 is recessed on one side surface of the slide rail 78 facing the recovery member 72 and close to the sewage discharge port 15. The shape of the side surface of the slider 79 is adapted to the recessed shape of the clamping groove 781, and the slider 79 rotates to be clamped in the clamping groove 781. The setting of the clamping groove allows the recovery member 72 to rotate and tilt after being pulled out of the sewage discharge port 15. On the one hand, it is convenient to pour out the pollutants inside the recovery member 72. On the other hand, it is convenient to clean and drain the recovery member 72, facilitating the outflow of the liquid inside the recovery member 72, and improving the convenience and practicality.

[0067] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A vacuum pumping device for plastic production, characterized in that: include: An exhaust pipe, wherein two ends of the exhaust pipe are respectively an air inlet and an air extraction port; A filter screen connected to the exhaust pipe; A vacuum pumping member connected to the air extraction port; A cleaning mechanism, the cleaning mechanism includes a flushing component and a recovery component, the flushing component and the recovery component are connected in the exhaust pipe, the flushing component is located on the side of the filter close to the air suction port and is arranged toward the filter, the recovery component is located on the side of the filter close to the air inlet, and the recovery component is used to recover the cleaning liquid after flushing the filter.

2. A vacuum pumping device for plastic production according to claim 1, characterized in that: The cleaning mechanism also includes a water pump and a water tank. The water pump and the water tank are both connected to the outer surface of the exhaust pipe. One end of the water pump is connected to the water tank, and the other end is connected to the flushing member.

3. A vacuum pumping device for plastic production according to claim 2, characterized in that: The flushing component is a water outlet pipe, and the water outlet pipe is extended along the extension direction of the exhaust pipe. The water outlet pipe is provided with a plurality of water outlet holes arranged at intervals along the extension direction thereof.

4. A vacuum pumping device for plastic production according to claim 3, characterized in that: The flushing component is a nozzle, and the flushing component is connected to a side of the exhaust pipe close to the air suction port.

5. A vacuum pumping device for plastic production according to any one of claims 1 to 4, characterized in that: The number of the flushing parts is two, and the two flushing parts are respectively arranged on two opposite sides of the inner wall of the exhaust pipe.

6. A vacuum pumping device for plastic production according to any one of claims 1 to 4, characterized in that: The exhaust pipe is provided with a sewage outlet between the filter and the air inlet, the recovery member is movably arranged in the sewage outlet, the cleaning mechanism also includes a rotating shaft and a baffle, the rotating shaft is connected to a side edge of the sewage outlet close to the air inlet, the baffle is rotatably connected to the rotating shaft, and the baffle rotates to open or close the sewage outlet.

7. A vacuum pumping device for plastic production according to claim 6, characterized in that: The cleaning mechanism also includes an elastic member, the rotation center of the elastic member is sleeved on the rotating shaft, one end of the elastic member is fixedly connected to the rotating shaft, and the other end is abutted against the baffle.

8. A vacuum pumping device for plastic production according to claim 6, characterized in that: The recovery member includes a main body and a flow guide member, the flow guide member is formed with a flow guide groove, and the flow guide member is connected to the side surface of the main body.

9. A vacuum pumping device for plastic production according to claim 8, characterized in that: The cleaning mechanism also includes a slide rail and a slider. The slide rail is arranged in the exhaust pipe and extends along the radial direction of the exhaust pipe. One end of the slider is slidably connected to the slide rail, and the other end is connected to the recovery member. The recovery member slides in and out of the sewage outlet along the slide rail.

10. A vacuum pumping device for plastic production according to claim 9, characterized in that: A side of the slide rail facing the recovery member and close to the sewage outlet is provided with a recessed snap-in groove, and the side surface shape of the slider is matched with the recessed shape of the snap-in groove, and the slider is rotated to be fixed in the snap-in groove.

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