A masterbatch hot melt filter device

Abstract

This utility model discloses a masterbatch hot melt filtering device, including a device body. A support rod is fixedly connected to the right side of the device body. A fixing plate is installed through the outer ring of the support rod near the right side. A limiting plate is fixedly installed through the outer ring of the support rod and is located on the left side of the fixing plate. A fastening nut is threadedly connected to the right side of the support rod and is located on the right side of the fixing plate. A groove is opened through the device body, and a filter frame is installed through the groove. A hydraulic telescopic rod is fixedly connected to one side of the filter frame through a connecting sealing plate. Two filtering positions are set on the filter frame, one for normal filtration and the other for standby filtration. When the filter screen needs to be replaced, the filter frame is adjusted under the action of the hydraulic telescopic rod, so that the standby filtration position replaces the normal filtration position. The normal filter screen is pushed out of the device body for subsequent filter screen disassembly and replacement, reducing long-term downtime.

Description

Technical Field

[0001] This utility model relates to the field of masterbatch hot melt filtration technology, specifically a masterbatch hot melt filtration device. Background Technology

[0002] Masterbatch hot melt filtration is one of the most important core components in plastic extrusion processing (such as blown film, cast film, fiber drawing, granulation, sheet / pipe extrusion, etc.). It is mainly connected between the extruder and the die head. Its core task is to efficiently, continuously or semi-continuously filter out impurities and unmelted particles from molten plastic (especially melt with added color masterbatch, functional masterbatch or recycled material) before it enters the final molding die (such as the die head). Some existing masterbatch hot melt filtration devices have simple structures, but require the machine to be stopped and bolts and other fasteners to be disassembled to replace the filter screen, which is a time-consuming process. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems existing in the above and / or existing masterbatch hot melt filtering devices, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a masterbatch hot melt filtration device. A groove is formed through the device body, and a filter frame is installed through the groove. A hydraulic telescopic rod is fixedly connected to one side of the filter frame via a connecting plate. Two filtration stations are set on the filter frame, one for normal filtration and the other for standby filtration. When the filter screen needs to be replaced, the filter frame is adjusted under the action of the hydraulic telescopic rod, so that the standby filtration station replaces the normal filtration station. The normal filter is pushed out of the device body for subsequent filter screen removal and replacement, avoiding long-term downtime and facilitating operation.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A masterbatch hot melt filter device includes a device body. A support rod is fixedly connected to the right side of the device body. A fixed plate is installed through the outer ring of the support rod near the right side. A limiting plate is fixedly installed through the outer ring of the support rod and is located on the left side of the fixed plate. A fastening nut is threadedly connected to the right side of the support rod and is located on the right side of the fixed plate. A sliding groove is formed at the upper end of the fixed plate. The sliding groove is slidably connected to a first protective shell through a slider. The slider is fixedly located on the inner top end of the first protective shell. A hydraulic telescopic rod is fixedly installed through the fixed plate. A groove and a first through hole are formed inside the device body. The first through hole is located on the front and rear sides of the groove. A filter frame is installed through the groove. Connecting sealing plates are fixedly connected to both the left and right sides of the filter frame. The connecting sealing plate on the right side is connected to the hydraulic telescopic rod.

[0008] In a preferred embodiment of the masterbatch hot melt filtering device of this utility model, an inlet pipe is connected to the front side of the device body, and an outlet pipe is connected to the rear side of the device body.

[0009] In a preferred embodiment of the masterbatch hot melt filtering device of this utility model, a guide hole is provided in the body of the device. The guide hole is located above and below the tank and the first through hole, and the tank and the first through hole are connected.

[0010] In a preferred embodiment of the masterbatch hot melt filtering device of this utility model, a guide rod is provided through the guide hole, and the left end of the guide rod is fixedly connected to the second protective shell, which is located on the left side of the device body.

[0011] In a preferred embodiment of the masterbatch hot melt filtering device of this utility model, the filter frame includes a second through hole opened inside the filter frame, and two second through holes are provided. A limiting groove is opened through the filter frame, and the limiting groove is arranged on the front and rear sides of the second through hole. The two limiting grooves and one second through hole are connected.

[0012] In a preferred embodiment of the masterbatch hot melt filtering device of this utility model, a filter screen frame is placed in the limiting groove, a filter screen layer is fixedly provided on the inner wall of the filter screen frame, an installation hole is provided on the filter screen frame, an external bolt is inserted through the installation hole, one end of the external bolt is threaded into the bolt hole, and the bolt hole is opened on the inner wall of the limiting groove.

[0013] In a preferred embodiment of the masterbatch hot melt filtering device of this utility model, the filter frame includes a first placement groove formed on the front and rear sides of the filter frame, the first placement groove and the limiting groove are in one-to-one correspondence, and the first placement groove is disposed on the outside of the limiting groove.

[0014] As a preferred embodiment of the masterbatch hot melt filtering device of this utility model, the outer side of the filter frame is provided with a second placement groove, and there are two sets of the second placement grooves. Each set of the second placement grooves has two second placement grooves, and each set of the second placement grooves is located on the left and right sides of the limiting groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: A groove is opened through the device body, and a filter frame is installed through the groove. A hydraulic telescopic rod is fixedly connected to one side of the filter frame through a connecting sealing plate. Two filtration stations are set on the filter frame, one for normal filtration and the other for standby filtration. When the filter screen needs to be replaced, the filter frame is adjusted under the action of the hydraulic telescopic rod, so that the standby filtration station replaces the normal filtration station. The normal filter is pushed out of the device body for subsequent filter screen disassembly and replacement, reducing long-term downtime and making operation convenient. A first mounting groove is set at each of the two filtration stations for the installation of the first sealing element, increasing the seal between the filtration station and the device body. At the same time, a second mounting groove is set on both the left and right sides of the first mounting groove for the installation of the second sealing element, further increasing the sealing performance and preventing the molten material from leaking out from the gaps during the sliding adjustment process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the support rod, fixing plate, limiting plate and sliding groove structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the filter frame and connecting sealing plate structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the device body of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the fixing plate, the slide groove, the slider and the first protective shell of this utility model;

[0022] Figure 6 This is a schematic diagram of the fixing plate, sliding groove, and first protective shell structure of this utility model;

[0023] Figure 7This is a schematic diagram of the cross-sectional structure of the filter frame of this utility model;

[0024] Figure 8 This is a schematic diagram of the second protective shell and guide rod structure of this utility model.

[0025] In the diagram: 1. Device body; 2. Inlet pipe; 3. Outlet pipe; 4. Support rod; 5. Fixing plate; 6. Limiting plate; 7. Fastening nut; 8. Slide groove; 9. Sliding block; 10. First protective shell; 11. Hydraulic telescopic rod; 12. Guide hole; 13. Groove; 14. First through hole; 15. Filter frame; 1501. Second through hole; 1502. Limiting groove; 1503. Filter screen frame; 1504. Filter screen layer; 1505. Mounting hole; 1506. First placement groove; 1507. Second placement groove; 16. Connecting sealing plate; 17. Second protective shell; 18. Guide rod. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual proportions. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] This utility model provides a masterbatch hot melt filtration device. A groove is opened through the device body, and a filter frame is installed through the groove. A hydraulic telescopic rod is fixedly connected to one side of the filter frame via a connecting sealing plate. The filter frame has two filtration positions, one for normal filtration and the other for standby filtration. When the filter screen needs to be replaced, the filter frame is adjusted under the action of the hydraulic telescopic rod, so that the standby filtration position replaces the normal filtration position. The normal filter is pushed out of the device body for subsequent filter screen removal and replacement, avoiding long-term downtime and making operation convenient.

[0030] Figures 1-8 The diagram shown is an overall structural schematic of one embodiment of the masterbatch hot melt filtration device of this utility model. Please refer to [link / reference]. Figures 1-8This embodiment of a masterbatch hot melt filtering device includes a device body 1. A support rod 4 is fixedly connected to the right side of the device body 1. A fixing plate 5 is provided through the outer ring of the support rod 4 near the right side. A limiting plate 6 is fixedly provided through the outer ring of the support rod 4 and is located on the left side of the fixing plate 5. A fastening nut 7 is threadedly connected to the right side of the support rod 4 and is located on the right side of the fixing plate 5. A sliding groove 8 is provided at the upper end of the fixing plate 5. The sliding groove 8 is slidably connected to a first protective shell 10 through a slider 9. The slider 9 is fixedly located on the inner top end of the first protective shell 10. A hydraulic telescopic rod 11 is fixedly provided through the fixing plate 5. A groove 13 and a first through hole 14 are provided inside the device body 1. The first through hole 14 is located on the front and rear sides of the groove 13. A filter frame 15 is provided through the groove 13. A connecting sealing plate 16 is fixedly connected to both the left and right sides of the filter frame 15. The connecting sealing plate 16 on the right side is connected to the hydraulic telescopic rod 11.

[0031] The front side of the device body 1 is connected to an inlet pipe 2, and the rear side of the device body 1 is connected to an outlet pipe 3.

[0032] The device body 1 is connected to the extruder via the inlet pipe 2 and to the die head via the outlet pipe 3. Depending on actual needs, additional devices may be added between the device body 1 and the die head, such as a melt storage tank or a melt gear pump. The connecting plate 16 and the filter frame 15 are fixed together with bolts. The first protective housing 10 is mounted on the fixed plate 5 via the slider 9 and the slide groove 8, for the right-side ejected filter screen structure. After replacement, the newly replaced filter screen structure is preheated by the heating structure inside the first protective housing 10. After preheating to an appropriate temperature, it is kept warm, monitored by a second temperature sensor. Both the first protective housing 10 and the second protective housing 17 are equipped with handles for pulling and disassembling. Through the above structure, when the filter screen structure needs to be replaced, it is hydraulically extended... The filter frame 15 is adjusted by the action of rod 11, so that the standby filter station replaces the normal filter station. The normal filter is pushed out of the device body for subsequent filter structure disassembly and replacement, reducing long-term downtime. When switching the filter structure, only a short interruption of melt flow of 5-10 seconds is needed. The extruder does not need to be stopped, but there will be a short pause in downstream production. This can be addressed by adding a melt storage cylinder between the downstream of device body 1 and the die head. During the short interruption, the supply can still be maintained. The principle of the melt storage cylinder is that during storage, the extruder melt continuously enters, pushing the piston backward. The hydraulic oil returns to the oil tank. When the melt storage is completed, the melt pressure is greater than the hydraulic side pressure, causing the piston to retract and compress the hydraulic chamber. The storage amount is determined by the piston stroke and depends on the actual needs. During release, the hydraulic pump is pneumatic, and high-pressure oil is injected into the oil cylinder. The piston advances rapidly, and the melt is continuously output to the die head.

[0033] The device body 1 has a guide hole 12, which is located above and below the groove 13 and the first through hole 14. The groove 13 and the first through hole 14 are connected. A guide rod 18 is inserted through the guide hole 12. The left end of the guide rod 18 is fixedly connected to the second protective shell 17, which is located on the left side of the device body 1.

[0034] The second protective housing 17 is inserted into the guide hole 12 through the guide rod 18. The second protective housing 17 is used to install the device body 1. For the filter structure pushed out on the left, after replacement, a heating structure can be set in the second protective housing 17 to preheat the newly replaced filter structure. After preheating to an appropriate temperature, the temperature is kept warm. The temperature is monitored by a first temperature sensor. By preheating the newly replaced filter structure, it is prevented that when replacing filter structures in subsequent applications, the temperature difference between the new filter structure and the melt is too large, which would cause the melt to solidify. The heating method can be selected as induction heating or resistance rod heating depending on the situation.

[0035] The filter frame 15 includes a second through hole 1501 inside the filter frame 15. There are two second through holes 1501. A limiting groove 1502 is formed through the filter frame 15. The limiting groove 1502 is located on the front and rear sides of the second through hole 1501. The two limiting grooves 1502 are connected to the second through hole 1501. A filter screen frame 1503 is placed in the limiting groove 1502. A filter screen layer 1504 is fixedly provided on the inner wall of the filter screen frame 1503. An installation hole 1505 is formed on the filter screen frame 1503. An external bolt is formed through the installation hole 1505. One end of the external bolt is threaded into the bolt hole. The bolt hole is formed on the inner wall of the limiting groove 1502.

[0036] The filter frame 1503 is installed and fixed by external bolts. The filter layers 1504 set in the front and rear corresponding filter frames 1503 are respectively set with a 20-60 mesh metal mesh near the melt inlet direction and an 80-200 mesh metal mesh near the melt outlet direction. The corresponding filter layers 1504 are used to filter larger impurities and smaller impurities respectively, which improves the filtration effect by grading the filtration and avoiding the increase of clogging risk by passing through the same filtration stage, and speeding up the replacement frequency of the filter layers 1504. The metal mesh is made of stainless steel.

[0037] The filter frame 15 includes a first placement groove 1506 opened on the front and rear sides of the filter frame 15. The first placement groove 1506 and the limiting groove 1502 correspond one-to-one. The first placement groove 1506 is located on the outside of the limiting groove 1502. A second placement groove 1507 is opened on the outer side of the filter frame 15. There are two sets of second placement grooves 1507. There are two second placement grooves 1507 in each set. Each set of second placement grooves 1507 is located on the left and right sides of the limiting groove 1502.

[0038] The first mounting groove 1506 is used for the installation of the first seal, which increases the seal between the filter station and the device body 1. At the same time, a second mounting groove 1507 is provided on both the left and right sides of the first mounting groove 1506 for the installation of the second seal, which further increases the sealing performance and prevents the melt from leaking out of the gap during the sliding adjustment process. The first and second seals are PTFE modified seals.

[0039] Combination Figures 1-8 The specific operation of the masterbatch hot melt filter device of this embodiment is as follows: The device body 1 is connected to the extruder through the inlet pipe 2, and the device body 1 is connected to the die head through the outlet pipe 3. When the filter screen structure needs to be replaced, the filter frame 15 is adjusted under the action of the hydraulic telescopic rod 11, so that the spare filter station replaces the normal filter station, and the normal filter is pushed out of the device body for subsequent filter screen structure disassembly and replacement. The first protective shell 10 is installed on the fixed plate 5 through the slider 9 and the slide groove 8 for the filter screen structure pushed out on the right side. After replacement, the newly replaced filter screen structure is preheated by the heating structure set in the first protective shell 10. After reaching a suitable temperature, heat preservation is performed. The second protective housing 17 is inserted into the guide hole 12 through the guide rod 18 for mounting the second protective housing 17 on the device body 1. For the filter structure pushed out on the left, after replacement, a heating structure can be set inside the second protective housing 17 to preheat the newly replaced filter structure. After preheating to a suitable temperature, heat preservation is performed. The first mounting groove 1506 is used for the installation of the first sealing element to increase the seal between the filtration station and the device body 1. At the same time, a second mounting groove 1507 is set on both the left and right sides of the first mounting groove 1506 for the installation of the second sealing element to further increase the sealing performance and prevent the melt from leaking out from the gap during the sliding adjustment process.

[0040] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A masterbatch hot melt filtration device, comprising a device body (1), characterized in that: A support rod (4) is fixedly connected to the right side of the device body (1). A fixing plate (5) is provided through the outer ring of the support rod (4) near the right side. A limiting plate (6) is fixedly provided through the outer ring of the support rod (4). The limiting plate (6) is located on the left side of the fixing plate (5). A fastening nut (7) is threadedly connected to the right side of the support rod (4). The fastening nut (7) is located on the right side of the fixing plate (5). A sliding groove (8) is provided at the upper end of the fixing plate (5). The sliding groove (8) is connected to the first protective shell (10) via a slider (9). The sliding connection is provided. The slider (9) is fixedly installed on the inner top of the first protective shell (10). A hydraulic telescopic rod (11) is fixedly installed through the fixed plate (5). A groove (13) and a first through hole (14) are opened in the device body (1). The first through hole (14) is located on the front and rear sides of the groove (13). A filter frame (15) is installed through the groove (13). A connecting sealing plate (16) is fixedly connected to both the left and right sides of the filter frame (15). The connecting sealing plate (16) on the right side is connected to the hydraulic telescopic rod (11).

2. The masterbatch hot melt filtration device according to claim 1, characterized in that: The front side of the device body (1) is connected to an inlet pipe (2), and the rear side of the device body (1) is connected to an outlet pipe (3).

3. The masterbatch hot melt filtering device according to claim 1, characterized in that: The device body (1) has a guide hole (12) inside. The guide hole (12) is located above and below the groove (13) and the first through hole (14). The groove (13) and the first through hole (14) are connected.

4. The masterbatch hot melt filtration device according to claim 3, characterized in that: A guide rod (18) is provided through the guide hole (12). The left end of the guide rod (18) is fixedly connected to the second protective shell (17). The second protective shell (17) is located on the left side of the device body (1).

5. The masterbatch hot melt filtering device according to claim 1, characterized in that: The filter frame (15) includes a second through hole (1501) inside the filter frame (15). There are two second through holes (1501). A limiting groove (1502) is formed through the filter frame (15). The limiting groove (1502) is set on the front and rear sides of the second through hole (1501). The two limiting grooves (1502) and the second through hole (1501) are connected.

6. The masterbatch hot melt filtration device according to claim 5, characterized in that: A filter frame (1503) is placed inside the limiting groove (1502). A filter layer (1504) is fixedly installed on the inner wall of the filter frame (1503). An installation hole (1505) is opened on the filter frame (1503). An external bolt is inserted through the installation hole (1505). One end of the external bolt is threaded into the bolt hole, which is located on the inner wall of the limiting groove (1502).

7. The masterbatch hot melt filtration device according to claim 1, characterized in that: The filter frame (15) includes a first placement groove (1506) opened on the front and rear sides of the filter frame (15). The first placement groove (1506) and the limiting groove (1502) correspond one-to-one. The first placement groove (1506) is located on the outside of the limiting groove (1502).

8. The masterbatch hot melt filtering device according to claim 1, characterized in that: The filter frame (15) has a second mounting slot (1507) on its outer side. There are two sets of the second mounting slot (1507), and each set of the second mounting slot (1507) has two slots. Each set of the second mounting slot (1507) is located on the left and right sides of the limiting slot (1502).

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