Vacuumizing device for plastic extruder

Abstract

The utility model discloses a vacuumizing device for a plastic extruder, which comprises a support base, a water ring vacuum pump, at least two vacuum filter components and at least one group of control valves, the water ring vacuum pump is arranged on the support base, and the water ring vacuum pump is provided with a first air inlet port and a first air outlet port; the vacuum filtering assemblies are arranged on the two sides of the water ring vacuum pump respectively and fixedly installed on the supporting base, each vacuum filtering assembly comprises a filtering cylinder and a cylinder cover detachably installed on the filtering cylinder, and the cylinder covers are in sealed connection with the filtering cylinders; the filter cylinder is provided with a second air inlet port and a second air outlet port, the second air inlet port is communicated with an exhaust port of the plastic extruder, and the second air outlet port is communicated with the first air inlet port of the water ring vacuum pump; and the control valves are respectively arranged between the second air inlet port of the filter cylinder and the exhaust port of the plastic extruder.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of vacuumizing device for plastic extruder, belong to vacuumizing equipment technical field. BACKGROUND

[0002] At present, in the composite plastic sheet board extrusion process, the interfacial bonding force between different materials is the key factor affecting product performance. Vacuumizing can exclude air and moisture in composite materials, reduce the porosity and defects at the interface, improve the interfacial bonding force between different materials, thereby enhancing the mechanical properties and corrosion resistance of composite materials. For some composite materials containing multiple components, vacuumizing can help control the distribution and proportion of each component, making the structure of the composite material more uniform and the performance more stable.

[0003] After searching the prior art, it is found that the Chinese patent with publication number CN219191192U discloses a vacuumizing device connected to a plastic extruder. This patent can prevent the conductive pipe from being blocked, but during use, it is found that maintenance requires shutdown, which is inconvenient to use. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a vacuumizing device for a plastic extruder, which can clean without stopping and is easy to use.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: a vacuumizing device for a plastic extruder, comprising:

[0006] a support base;

[0007] a water ring vacuum pump, which is installed on the support base, and is provided with a first air inlet port and a first air outlet port;

[0008] at least two vacuum filter assemblies, which are respectively arranged on both sides of the water ring vacuum pump and are fixedly installed on the support base, each vacuum filter assembly comprising a filter cylinder and a cylinder cover detachably installed on the filter cylinder, the cylinder cover being in sealed connection with the filter cylinder, wherein the filter cylinder is provided with a second air inlet port and a second air outlet port, the second air inlet port being in communication with an exhaust port of the plastic extruder, and the second air outlet port being in communication with the first air inlet port of the water ring vacuum pump;

[0009] at least one control valve, which is respectively installed between the second air inlet port of the filter cylinder and the exhaust port of the plastic extruder, and between the second air outlet port of the filter cylinder and the first air inlet port of the water ring vacuum pump.

[0010] Further, the connecting part of the filter cylinder body and the cylinder cover is uniformly provided with three groups of fixing structures along the circumference.

[0011] Further, a specific structure of the fixing structure is provided, which comprises:

[0012] A fixing seat is arranged on the outer circumferential surface of the filter cylinder body along the radial direction, and a connecting hole is arranged on the fixing seat;

[0013] A fixing lug is arranged on the outer circumferential surface of the cylinder cover along the radial direction, and a mounting hole is arranged on the fixing lug, and the fixing lug is suitable for the fixing member to pass through the mounting hole of the fixing lug and the connecting hole of the fixing seat to fix the cylinder cover on the filter cylinder body.

[0014] Further, in order to facilitate observation, the cylinder cover is provided with an observation window, which comprises:

[0015] A through hole is arranged on the cylinder cover;

[0016] A glass sheet is arranged on the through hole of the cylinder cover.

[0017] Further, the glass sheet is made of organic glass.

[0018] Further, in order to improve the sealing performance, an annular groove is arranged on the end surface of the filter cylinder body, and an O-shaped sealing ring is embedded in the annular groove, and the O-shaped sealing ring is suitable for sealing between the filter cylinder body and the cylinder cover.

[0019] Further, the water ring vacuum pump is provided with a pneumatic angle seat valve at one end.

[0020] Further, a manual handle is arranged on the control valve.

[0021] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0022] Before the water ring vacuum pump is started, the water ring vacuum pump is injected with a proper amount of pure water or soft water as working liquid to ensure the normal operation of the water ring vacuum pump.

[0023] In addition, in the process of injecting pure water or soft water, a pneumatic angle seat valve installed on the water ring vacuum pump can be used to accurately control the water flow, ensuring that the flow of the working fluid meets the requirements. The observation window on the cylinder cover allows the operator to view the filtration status in real time.

[0024] In summary, the utility model not only realizes the maintenance mode without stopping, but also significantly improves the efficiency of the cleaning process, ensuring the continuity and stability of production. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of the vacuum device for the plastic extruder of the utility model;

[0026] Figure 2 It is a front view of the vacuum device for the plastic extruder of the utility model;

[0027] Figure 3 It is a perspective view of the vacuum device for the plastic extruder of the utility model; Figure 1 It is a partial enlarged view of part A. DETAILED DESCRIPTION

[0028] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail below according to specific embodiments and in conjunction with the drawings.

[0029] As shown in the drawings, a vacuum device for a plastic extruder comprises: Figures 1-3

[0030] A support base 1;

[0031] A water ring vacuum pump 2 is installed on the support base 1, and the water ring vacuum pump 2 is provided with a first air inlet port 21 and a first air outlet port 22;

[0032] At least two vacuum filter assemblies 3 are arranged on both sides of the water ring vacuum pump 2 and fixedly installed on the support base 1, and the vacuum filter assembly 3 comprises a filter cylinder 31 and a cylinder cover 32 detachably installed on the filter cylinder 31, and the cylinder cover 32 is in sealed connection with the filter cylinder 31, wherein the filter cylinder 31 is provided with a second air inlet port 33 and a second air outlet port 34, the second air inlet port 33 is in communication with the exhaust port of the plastic extruder, and the second air outlet port 34 is in communication with the first air inlet port 21 of the water ring vacuum pump 2;

[0033] At least one set of control valves 4 are installed between the second air inlet port 33 of the filter cylinder 31 and the exhaust port of the plastic extruder, and between the second air outlet port 34 of the filter cylinder 31 and the first air inlet port 21 of the water ring vacuum pump 2.

[0034] ​In the embodiment, as shown in Figure 1 and Figure 3 Before the water ring vacuum pump 2 is started, a proper amount of pure water or soft water is injected into the water ring vacuum pump 2 as working liquid to ensure the normal operation of the water ring vacuum pump 2. Then, the exhaust port of the plastic extruder is connected with the second air inlet port 33 of the vacuum filter assembly 3, and one of the two vacuum filter assemblies 3 is selected to work by the control valve 4. In the continuous working state of the plastic extruder, the vacuumizing process is synchronized with the production process, and the negative pressure carries away the impurities in the gas, liquid and raw materials, so the vacuum filter assembly 3 needs to be cleaned regularly to ensure its efficient operation. When the vacuum filter assembly 3 needs to be cleaned, the corresponding control valve 4 of the vacuum filter assembly 3 to be cleaned is first closed, then the vacuum filter assembly 3 is depressurized, then the connection between the cylinder cover 32 and the filter cylinder body 31 is disassembled, and finally the cleaning work of the impurities inside the filter cylinder body 31 is completed. A pressure relief joint is arranged at the bottom of the filter cylinder body 31, and a pressure relief ball valve is arranged on the pressure relief joint.

[0035] Specifically, as shown in Figure 1 and Figure 3 The connection between the filter cylinder body 31 and the cylinder cover 32 is uniformly provided with three groups of fixing structures 35 in the circumferential direction.

[0036] Specifically, as shown in Figure 1 and Figure 3 The fixing structure 35 comprises:

[0037] The fixing seat 351 is arranged on the outer circumferential direction of the filter cylinder body 31 and extends outward in the radial direction, and the fixing seat 351 is provided with a connecting hole;

[0038] The fixing lug 352 is arranged on the outer circumferential direction of the cylinder cover 32 and extends outward in the radial direction, and the fixing lug 352 is provided with a mounting hole, and the fixing lug 352 is suitable for the fixing member 353 to pass through the mounting hole of the fixing lug 352 and connect with the connecting hole of the fixing seat 351, so as to fix the cylinder cover 32 on the filter cylinder body 31.

[0039] In the embodiment, as shown in Figure 3 In actual use, the operator can quickly separate the cylinder cover 32 and the filter cylinder body 31 by disassembling the fixing member 353, so as to facilitate the cleaning and maintenance of the inside of the filter cylinder body 31.

[0040] The fixing member 353 can be a standard fastener such as a bolt or a screw, which is used in combination with a nut to realize fixed connection. In some embodiments, the number of fixing structures 35 is not limited to three, and can be set according to specific needs.

[0041] Specifically, as shown in Figure 1 and Figure 3 The cylinder cover 32 is provided with an observation window 36, and the observation window 36 comprises:

[0042] A through hole is formed in the cover 32.

[0043] A glass sheet 362 is installed on the through hole of the cover 32.

[0044] Specifically, as shown in Figure 3 the glass sheet 362 is made of organic glass.

[0045] In the embodiment, as shown in Figure 1 and Figure 3 the observation window 36 provided on the cover 32 is composed of the through hole and the glass sheet 362, and the working state and the impurity accumulation inside the filter cartridge 31 can be directly observed through the observation window 36. The thickness of the glass sheet 362 can be selected according to the actual working pressure.

[0046] Specifically, as shown in Figure 1 and Figure 3 an annular groove is provided on the end face of the filter cartridge 31, and an O-shaped sealing ring 38 is embedded in the annular groove, and the O-shaped sealing ring 38 is suitable for sealing between the filter cartridge 31 and the cover 32.

[0047] Specifically, as shown in Figures 1-2 the water ring vacuum pump 2 is provided with a pneumatic angle seat valve 23 at one end.

[0048] Specifically, as shown in Figure 1 a manual handle is provided on the control valve 4.

[0049] In the embodiment, as shown in Figures 1-3 the installation sequence of the O-shaped sealing ring 38, the glass sheet 362 and the cover 32 is that the O-shaped sealing ring 38 is installed first, then the glass sheet is installed, and finally the cover 32 is installed.

[0050] The manual handle provided on the control valve 4 is convenient for the operator to adjust the opening and closing.

[0051] The pipe material connecting the water ring vacuum pump 2 and the vacuum filter assembly 3 is a galvanized pipe, the first air inlet port 21 and the first air outlet port 22 of the water ring vacuum pump 2 are provided with a connecting flange, the connecting flange is provided with an internal thread, and the galvanized pipe is provided with an external thread, and the pneumatic angle seat valve 23 can better control the on-off of fluid flow, adjust the flow, control the pressure and prevent the backflow of fluid.

[0052] The above-described specific embodiments further illustrate the technical problems solved by the utility model, technical solutions and beneficial effects. It should be understood that the above-described specific embodiments are only for the utility model and do not limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A vacuum extraction device for a plastic extruder, characterized in that It comprises: a support base (1); a water ring vacuum pump (2) installed on the support base (1), the water ring vacuum pump (2) is provided with a first air inlet port (21) and a first air outlet port (22); at least two vacuum filter assemblies (3) are respectively arranged on both sides of the water ring vacuum pump (2) and fixedly installed on the support base (1), the vacuum filter assembly (3) comprises a filter cylinder (31) and a cylinder cover (32) detachably installed on the filter cylinder (31), the cylinder cover (32) is in sealing connection with the filter cylinder (31), wherein the filter cylinder (31) is provided with a second air inlet port (33) and a second air outlet port (34), the second air inlet port (33) is communicated with the exhaust port of the plastic extruder, and the second air outlet port (34) is communicated with the first air inlet port (21) of the water ring vacuum pump (2); at least one set of control valves (4) are respectively installed between the second air inlet port (33) of the filter cylinder (31) and the exhaust port of the plastic extruder, and between the second air outlet port (34) of the filter cylinder (31) and the first air inlet port (21) of the water ring vacuum pump (2).

2. The vacuum device for the plastic extruder according to claim 1, wherein the connection part of the filter cylinder (31) and the cylinder cover (32) is uniformly provided with three groups of fixing structures (35) along the circumference.

3. The vacuum device for the plastic extruder according to claim 2, wherein the fixing structure (35) comprises: a fixing seat (351) extending outward along the radial direction and arranged on the outer circumferential surface of the filter cylinder (31), the fixing seat (351) is provided with a connecting hole; a fixing lug (352) extending outward along the radial direction and arranged on the outer circumferential surface of the cylinder cover (32), the fixing lug (352) is provided with a mounting hole, and the fixing lug (352) is suitable for a fixing piece (353) to pass through the mounting hole of the fixing lug (352) and the connecting hole of the fixing seat (351), so as to fix the cylinder cover (32) on the filter cylinder (31).

4. The vacuum device for the plastic extruder according to claim 1, wherein the cylinder cover (32) is provided with an observation window (36), and the observation window (36) comprises: a through hole formed on the cylinder cover (32); a glass sheet (362) installed on the through hole of the cylinder cover (32).

5. The vacuum device for the plastic extruder according to claim 4, wherein the glass sheet (362) is made of organic glass.

6. The vacuum device for the plastic extruder according to claim 1, wherein An annular groove is arranged on the end face of the filter cylinder (31), and an O-shaped sealing ring (38) is embedded in the annular groove, which is suitable for sealing between the filter cylinder (31) and the cylinder cover (32).

7. The vacuum device for a plastic extruder according to claim 1, wherein, The water ring vacuum pump (2) is provided with a pneumatic angle seat valve (23) at one end.

8. The vacuum device for a plastic extruder according to claim 1, wherein, The control valve (4) is provided with a manual handle.

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