Spiral maintenance inspection window

Abstract

The utility model relates to the technical field of spiral extruders, in particular to a spiral maintenance inspection window which comprises a barrel, an inspection window body is arranged at the upper end of the barrel, a mounting groove is formed in the inner wall of the upper end of the inspection window body, a positioning groove is formed in the inner wall of the mounting groove, a sealing plate is arranged at the mounting groove, and the middle of the sealing plate is of an arc-shaped structure. Extrusion openings are formed in the two sides of the sealing plate, a sealing ring is arranged at the lower end of the sealing plate, a sealing groove is formed in the inner wall of the lower end of the mounting groove, when the sealing plate is located at the mounting groove, the sealing ring is clamped to the sealing groove, positioning pieces are fixedly connected to the two sides of the sealing plate, and an extrusion block is slidably connected to the middle of the inspection window; the side end of the extrusion block is fixedly connected with a driving plate, the two ends of the driving plate penetrate through the inspection window, the two sides of the inspection window are fixedly connected with connecting plates, and the top ends of the connecting plates are slidably connected with blocking plates.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a screw maintenance inspection window. Background Art

[0002] Screw extruders mainly rely on the pressure and shear force generated by the rotation of the screw to enable the material to be fully plasticized and evenly mixed, and to be formed through the die. This process includes steps such as solid conveying, melt pressurization and pumping, mixing stripping and evaporation. Generally, a screw extruder will be provided with an inspection window in the middle of the pipeline to facilitate the cleaning of the internal screw, and at the same time, it is also convenient to open the inspection window for processing when abnormal conditions occur. However, this leads to a problem with the sealing at the joint between the inspection window and the extruder body. When the screw extruder is working, the inside is in a high-temperature and high-pressure state, and the sealing will be problematic after long-term use; and the existing inspection windows are usually fixed with bolts, which are inconvenient to disassemble quickly when problems occur. Content of the Utility Model

[0003] The purpose of the utility model is to provide a screw maintenance inspection window to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A screw maintenance inspection window, including a cylinder body, an inspection window is provided at the upper end of the cylinder body, an installation groove is provided on the inner wall at the upper end of the inspection window, a positioning groove is provided on the inner wall of the installation groove, a sealing plate is provided at the installation groove, the middle of the sealing plate is an arc structure, extrusion ports are provided on both sides of the sealing plate, a sealing ring is provided at the lower end of the sealing plate, a sealing groove is provided on the inner wall at the lower end of the installation groove, when the sealing plate is located at the installation groove, the sealing ring is clamped at the sealing groove, positioning pieces are fixedly connected to both sides of the sealing plate, an extrusion block is slidably connected in the middle of the inspection window, a driving plate is fixedly connected to the side end of the extrusion block, both ends of the driving plate penetrate through the inspection window, connecting plates are fixedly connected to both sides of the inspection window, a blocking plate is slidably connected to the top end of the connecting plate, and a clamping plate is hinged to the lower end of the connecting plate.

[0005] Preferably, the positioning piece is located below the extrusion port, the positioning piece is an elastic iron sheet, the positioning piece is an arc structure, the positioning groove is an arc structure, and when the sealing plate is located at the installation groove, the positioning piece is clamped in the positioning groove.

[0006] Preferably, both sides of the extrusion block are inclined structures. When the positioning piece is clamped in the positioning groove, the extrusion block is clamped in the extrusion port, and the lower end of the extrusion block abuts against the inner wall of the extrusion port.

[0007] Preferably, a plurality of clamping grooves are provided at the upper end of the driving plate, and the upper end of the clamping groove is of a horn-shaped structure.

[0008] Preferably, near the blocking plate of the clamping plate, a return spring is provided between the clamping plate and the connecting plate, and a weight pulling ring is fixedly connected to the upper end of the blocking plate.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the sealing plate is installed on the inspection window, during the installation process, the positioning piece will be clamped into the positioning groove to position and install the sealing plate. Then, by pushing the driving plate, the driving plate drives the extrusion block to move, and the extrusion block squeezes the sealing plate. Different moving distances of the extrusion block result in different pressures applied to the sealing plate, thereby compensating for the damaged parts of the sealing ring to ensure the sealing performance and also increasing the service life of the equipment. By pulling the weight pulling ring, the clamping plate can quickly move the extrusion block away from the extrusion opening without obstruction, facilitating the quick installation and disassembly of the sealing plate and the inspection window and facilitating subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic connection diagram of the inspection window.

[0011] Figure 2 It is an enlarged schematic diagram at A.

[0012] Figure 3 It is a schematic connection diagram of the driving plate.

[0013] In the figure: 1 cylinder body, 2 inspection window, 3 sealing plate, 4 positioning piece, 5 positioning groove, 6 sealing ring, 7 sealing groove, 8 extrusion opening, 9 extrusion block, 10 driving plate, 11 connecting plate, 12 weight pulling ring, 13 blocking plate, 14 return spring, 15 clamping groove, 16 clamping plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to deepen the understanding and recognition of the present utility model below, the technical solutions in the embodiments of the present utility model will be clearly and completely described and introduced in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments, and no any formal restrictions are imposed on this embodiment. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] Please refer to Figures 1-3, the present utility model provides a technical solution: a spiral maintenance inspection window, which includes a cylinder body 1. An inspection window 2 is provided at the upper end of the cylinder body 1. An installation groove is provided on the inner wall at the upper end of the inspection window 2. A positioning groove 5 is provided on the inner wall of the installation groove. A sealing plate 3 is provided at the installation groove. The middle of the sealing plate 3 is of an arc structure. Extrusion ports 8 are provided on both sides of the sealing plate 3. A sealing ring 6 is provided at the lower end of the sealing plate 3. A sealing groove 7 is provided on the inner wall at the lower end of the installation groove. When the sealing plate 3 is located at the installation groove, the sealing ring 6 is clamped at the sealing groove 7. Positioning pieces 4 are fixedly connected to both sides of the sealing plate 3. An extrusion block 9 is slidably connected to the middle of the inspection window 2. A driving plate 10 is fixedly connected to the side end of the extrusion block 9. Both ends of the driving plate 10 penetrate through the inspection window 2. Connecting plates 11 are fixedly connected to both sides of the inspection window 2. A blocking plate 13 is slidably connected to the top of the connecting plate 11. A clamping plate 16 is hinged to the lower end of the connecting plate 11. When installing the sealing plate 3, the sealing ring 6 is clamped in the sealing groove 7, thereby sealing the connection between the sealing plate 3 and the inspection window 2.

[0016] The positioning piece 4 is located below the extrusion port 8. The positioning piece 4 is an elastic iron sheet. The positioning piece 4 is of an arc structure. The positioning groove 5 is of an arc structure. When the sealing plate 3 is located at the installation groove, the positioning piece 4 is clamped in the positioning groove 5. When installing the sealing plate 3, the positioning piece 4 is first squeezed and deformed until the positioning piece 4 reaches the positioning groove 5, and the positioning piece 4 returns to its original state, thereby positioning and installing the sealing plate 3 and the inspection window 2.

[0017] Both sides of the extrusion block 9 are of an inclined structure. When the positioning piece 4 is clamped in the positioning groove 5, the extrusion block 9 is clamped in the extrusion port 8. The lower end of the extrusion block 9 abuts against the inner wall of the extrusion port 8. Multiple clamping grooves 15 are provided at the upper end of the driving plate 10. The upper end of the clamping groove 15 is of a horn-shaped structure. Near the blocking plate 13, a return spring 14 is provided between the clamping plate 16 and the connecting plate 11. A weight pulling ring 12 is fixedly connected to the upper end of the blocking plate 13. After the positioning piece 4 is clamped in the positioning groove 5, the driving plate 10 is pushed to move. The driving plate 10 drives the extrusion block 9 to move together, and the extrusion block 9 is clamped into the extrusion port 8. The extrusion block 9 extrudes the extrusion port 8, thereby applying pressure to the sealing plate 3. When the sealing ring 6 is damaged, the extrusion can compensate for the damaged part of the sealing ring 6, thereby ensuring the sealing performance and increasing the service life. When the driving plate 10 moves, the driving plate 10 can lift the clamping plate 16 until the clamping plate 16 moves to the clamping groove 15, and the clamping plate 16 is clamped into the clamping groove 15. The blocking plate 13 can block the clamping plate 16, so that the driving plate 10 can only move in one direction, thereby ensuring the pressure of the sealing ring 6. When the sealing plate 13 needs to be disassembled, the weight pulling ring 12 is pulled. Without the blocking of the blocking plate 13, the extrusion block 9 can be moved away from the extrusion port 8, which is convenient for taking out the sealing plate 3 and facilitating quick inspection and maintenance.

[0018] Although the embodiments of the present utility model have been shown and described, it should be emphasized that the above description is only an introduction and description of the usage mode of the embodiments of the present utility model, and does not impose any formal limitation on the present utility model. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A spiral maintenance inspection window, comprising a cylinder (1), characterized in that: An inspection window (2) is provided at the upper end of the cylinder (1), a mounting groove is provided on the inner wall of the upper end of the inspection window (2), a positioning groove (5) is provided on the inner wall of the mounting groove, a sealing plate (3) is provided at the mounting groove, the middle of the sealing plate (3) is an arc-shaped structure, extrusion ports (8) are provided on both sides of the sealing plate (3), a sealing ring (6) is provided at the lower end of the sealing plate (3), a sealing groove (7) is provided on the inner wall of the lower end of the mounting groove, and when the sealing plate (3) is located at the mounting groove, the sealing ring (6) is clamped in the sealing ring (6) and the sealing ring (7 ... At the groove (7), both sides of the sealing plate (3) are fixedly connected with positioning plates (4), the middle of the inspection window (2) is slidably connected with an extrusion block (9), the side ends of the extrusion block (9) are fixedly connected with a driving plate (10), both ends of the driving plate (10) pass through the inspection window (2), both sides of the inspection window (2) are fixedly connected with connecting plates (11), the top end of the connecting plate (11) is slidably connected with a blocking plate (13), and the lower end of the connecting plate (11) is hinged with a clamping plate (16).

2. A spiral maintenance inspection window according to claim 1, characterized in that: The positioning piece (4) is located at the lower side of the extrusion port (8), the positioning piece (4) is an elastic iron sheet, the positioning piece (4) is an arc-shaped structure, the positioning groove (5) is an arc-shaped structure, and when the sealing plate (3) is located at the installation groove, the positioning piece (4) is clamped in the positioning groove (5).

3. The spiral maintenance inspection window according to claim 1, characterized in that: The two sides of the extrusion block (9) are inclined structures. When the positioning piece (4) is clamped in the positioning groove (5), the extrusion block (9) is clamped in the extrusion opening (8), and the lower end of the extrusion block (9) abuts against the inner wall of the extrusion opening (8).

4. The spiral maintenance inspection window according to claim 1, characterized in that: The upper end of the driving plate (10) is provided with a plurality of clamping grooves (15), and the upper ends of the clamping grooves (15) are horn-shaped structures.

5. The spiral maintenance inspection window according to claim 1, characterized in that: The clamping plate (16) is close to the blocking plate (13), a return spring (14) is provided between the clamping plate (16) and the connecting plate (11), and a counterweight pull ring (12) is fixedly connected to the upper end of the blocking plate (13).

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