Non-stop screen exchanger

Abstract

The utility model discloses a non-stop screen exchanger, which relates to the field of screen exchangers and comprises a screen exchanger body and a sliding plate movably clamped in the screen exchanger body, an inlet and an outlet which are communicated with the sliding plate are respectively arranged on the front side and the rear side of the screen exchanger body, a clamping groove is arranged on the inner side of the screen exchanger body, and the sliding plate is arranged in the clamping groove. A clamping groove is formed in the sliding plate, a sealing assembly is movably clamped in the clamping groove, two filtering pieces arranged up and down are movably mounted in the sliding plate, mounting grooves corresponding to the filtering pieces in position are formed in the sliding plate, and a fixing assembly is movably mounted in the mounting grooves. The clamping groove is formed in the connecting face of the inner side of the screen exchanger body and the sliding plate, the sealing assembly is installed in the clamping groove, when the sliding plate slides in the screen exchanger body to replace a filtering piece, the sealing assembly is stressed and extruded to abut against the position between the screen exchanger body and the sliding plate after the filtering piece is replaced, and therefore fluid is prevented from leaking out; and the sealing effect between the screen exchanger body and the sliding plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of screen changers, specifically to a screen changer that operates without shutting down. Background Technology

[0002] In the granulation process of plastics and thermoplastic materials, solid plastic materials are heated and mechanically sheared in a twin-screw or single-screw extruder, melting and plasticizing them. The melt is then conveyed by the screw to the die head for extrusion and granulation. Because the raw plastic materials contain certain impurities or cross-linked products are generated during plasticization, these impurities need to be removed by filtration before entering the extruder die head. This filtration function is performed by the screen changer assembly.

[0003] Existing screen changers lack a good sealing structure at the alignment point between the filter screen on the slide plate and the flow channel opening. This causes fluid to easily leak out from the gap between the filter screen and the flow channel opening, resulting in waste and inconvenience in using the screen changer. It also makes it difficult to disassemble the filter screen and replace it when it is damaged. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A non-stop screen changer includes a screen changer body and a sliding plate that is movably engaged within the screen changer body. The screen changer body has an inlet and an outlet that communicate with the sliding plate on its front and rear sides, respectively. The screen changer body has a first slot on its inner side, and a sealing component is movably engaged inside the first slot. Two filter elements arranged vertically are movably installed inside the sliding plate. The sliding plate has mounting slots corresponding to the positions of the filter elements, and fixing components are movably installed inside the mounting slots. The fixing components are located on the left and right sides of the filter elements.

[0006] Furthermore: the sealing assembly includes a retaining frame, which is adsorbed and snapped into a first retaining groove. An elastic sheet and a retaining ring are movably snapped into the inside of the retaining frame. The retaining ring is located inside the elastic sheet. A second retaining groove is formed on the inner side of the retaining ring. A sealing rubber ring is movably snapped into the inside of the second retaining groove.

[0007] Furthermore: the fixing component includes a slider and a limiting plate. The slider is movably engaged in the mounting groove, and the limiting plate is fixedly connected to the outer side of the mounting groove. A threaded post is movably engaged inside the slider. The threaded post is threadedly connected to the inside of the slider, and a hexagonal hole is provided on the outer side of the threaded post.

[0008] Furthermore: the filter element includes a filter screen and a retaining ring, the filter screen is fixedly connected to the inner side of the retaining ring, and the retaining ring is movably engaged in the slide plate.

[0009] Furthermore: the elastic sheet is made of metal and is arranged in a "V" shape.

[0010] Furthermore: the retaining ring is flush with the inner side of the screen changer body, and the sealing ring has a circular cross-section.

[0011] Furthermore, the inner side of the slider is movably engaged with the inside of the fixing ring.

[0012] Furthermore: the slider is fitted to the inner wall of the mounting groove.

[0013] The technical effect achieved by this utility model is as follows:

[0014] 1. A slot is made on the inner side of the screen changer body and the connecting surface of the slide plate, and a sealing component is installed in the slot. When the slide plate slides along the screen changer body to replace the filter element, the sealing component is pressed by force and pressed against the screen changer body and the slide plate after the filter element is replaced, thereby preventing fluid leakage and improving the sealing effect between the screen changer body and the slide plate.

[0015] 2. The filter element is fixed by a fixing component set in the mounting slot. The fixing component can be used to limit and fix the filter element. The filter element can be easily removed and replaced by operating the fixing component to disconnect it. This improves the convenience of filter element replacement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the non-stop screen changer of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the sealing assembly of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the skateboard of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the fixing component of this utility model.

[0022] Reference numerals: 1. Screen changer body; 2. Slide plate; 3. Inlet; 4. Outlet; 5. First slot; 6. Sealing assembly; 61. Frame; 62. Elastic sheet; 63. Snap ring; 64. Second slot; 65. Sealing ring; 7. Filter element; 71. Filter screen; 72. Fixing ring; 8. Mounting groove; 9. Fixing assembly; 91. Slider; 92. Limiting plate; 93. Threaded post; 94. Hexagonal hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] like Figures 1 to 5 As shown, this utility model provides a non-stop screen changer, including a screen changer body 1 and a sliding plate 2 that is movably engaged within the screen changer body 1. The screen changer body 1 has an inlet 3 and an outlet 4 that communicate with the sliding plate 2 on its front and rear sides, respectively. The screen changer body 1 has a first slot 5 on its inner side, and a sealing component 6 is movably engaged inside the first slot 5. Two filter elements 7 arranged vertically are movably installed inside the sliding plate 2. The sliding plate 2 has an installation groove 8 that corresponds to the position of the filter elements 7, and a fixing component 9 is movably installed inside the installation groove 8. The fixing component 9 is located on the left and right sides of the filter elements 7.

[0027] A first slot 5 is formed on the inner side of the screen changer body 1 and the connecting surface of the slide plate 2, and a sealing component 6 is installed in the first slot 5. When the slide plate 2 slides along the screen changer body 1 to replace the filter element 7, the sealing component 6 is pressed by force and pressed against the screen changer body 1 and the slide plate 2 after the filter element 7 is replaced, thereby preventing fluid leakage and improving the sealing effect between the screen changer body 1 and the slide plate 2. At the same time, the fixing component 9 set in the mounting groove 8 is used to limit and fix the filter element 7. By operating the fixing component 9, the connection between the fixing component 9 and the filter element 7 is disconnected, thereby making it convenient to take out the filter element 7 for replacement and improving the convenience of replacing the filter element 7.

[0028] like Figure 3 As shown, the sealing assembly 6 includes a retaining frame 61, which is adsorbed and snapped into the first retaining groove 5. An elastic sheet 62 and a retaining ring 63 are movably snapped into the inside of the retaining frame 61. The retaining ring 63 is located inside the elastic sheet 62. A second retaining groove 64 is provided inside the retaining ring 63. A sealing rubber ring 65 is movably snapped into the inside of the second retaining groove 64.

[0029] By applying force to the sealing ring 65, the retaining ring 63 is brought into flush contact with the inner wall of the screen changer body 1, causing the elastic sheet 62 located in the retaining frame 61 to deform and flatten. When the filter element 7 moves to connect and align with the slide plate 2 and the inlet 3, the elastic force of the elastic sheet 62 pushes the retaining ring 63 to move inward, causing the sealing ring 65 to tightly fit against the outer wall of the slide plate 2. By applying force to the sealing ring 65, the sealing effect is ensured.

[0030] like Figure 4 and Figure 5 As shown, the fixing component 9 includes a slider 91 and a limiting plate 92. The slider 91 is movably engaged in the mounting groove 8, and the limiting plate 92 is fixedly connected to the outer side of the mounting groove 8. A threaded post 93 is movably engaged inside the slider 91. The threaded post 93 is threadedly connected to the inside of the slider 91, and a hexagonal hole 94 is provided on the outer side of the threaded post 93.

[0031] The filter element 7 includes a filter screen 71 and a retaining ring 72. The filter screen 71 is fixedly connected to the inner side of the retaining ring 72, and the retaining ring 72 is movably engaged in the slide plate 2.

[0032] By inserting the retaining ring 72 into the corresponding position in the slide plate 2, and rotating the threaded column 93 through the hexagonal holes 94 on both sides, the rotation of the threaded column 93 drives the threaded slider 91 to move along the mounting groove 8 and engage with both sides of the retaining ring 72 to fix the filter screen 71. By rotating the threaded column 93 in the opposite direction, the slider 91 is moved outward, which facilitates the replacement and maintenance of the filter element 7.

[0033] like Figure 3 As shown, the elastic sheet 62 is made of metal and is arranged in a "V" shape.

[0034] The elastic sheet 62, made of metal and arranged in a "V" shape, is deformed by the force applied when the slide plate 2 slides inside the screen changer body 1. The elastic support of the elastic sheet 62 and the sealing ring 65 ensure the sealing effect between the elastic sheet 62 and the slide plate 2.

[0035] like Figure 2 As shown, the retaining ring 63 is flush with the inner side of the screen changer body 1, and the sealing ring 65 has a circular cross-section.

[0036] The circular cross-section of the sealing ring 65 facilitates its sealing action between the screen changer body 1 and the slide plate 2.

[0037] like Figure 5 As shown, the inner side of the slider 91 is movably engaged with the inside of the fixed ring 72.

[0038] The fixed ring 72 is fixed by the slider 91 being engaged within it.

[0039] like Figure 4 As shown, slider 91 fits against the inner wall of mounting groove 8.

[0040] The slider 91 is made to fit against the inner wall of the mounting groove 8 so that the slider 91 can slide tightly along the mounting groove 8.

[0041] Working principle:

[0042] like Figures 1 to 5 As shown, by inserting the sealing assembly 6 into the first slot 5, when the filter element 7 is replaced by sliding the slide plate 2 along the screen changer body 1, the sealing ring 65 is forced to move the retaining ring 63 to be flush with the inner wall of the screen changer body 1, causing the elastic piece 62 located in the frame 61 to deform and flatten. When the filter element 7 moves and is connected and aligned with the slide plate 2 and the inlet 3, the elastic force of the elastic piece 62 pushes the retaining ring 63 to move inward, so that the sealing ring 65 is tightly attached to the outer wall of the slide plate 2. The sealing ring 65 is squeezed to ensure a seal. When the filter element 7 is replaced, the hexagonal bolt is inserted into the hexagonal hole 94 and rotated to drive the threaded column 93 to rotate. The rotation of the threaded column 93 causes the slider 91 to move outward along the external thread of the threaded column 93, so that the slider 91 is disengaged from the retaining ring 72. The filter element 7 is then removed from the inside of the slide plate 2 for replacement.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A non-stop screen changer comprising a screen changer body (1) and a slide plate (2) movably clamped in the screen changer body (1), characterized in that: The front and back of the screen changer body (1) are respectively provided with an inlet (3) and an outlet (4) penetrating through the sliding plate (2), the inner side of the screen changer body (1) is provided with a first clamping groove (5), the inside of the first clamping groove (5) movably clamps a sealing assembly (6), the inside of the sliding plate (2) movably clamps two filter pieces (7) arranged in an up-down manner, the inside of the sliding plate (2) is provided with an installation groove (8) corresponding to the position of the filter piece (7), and the inside of the installation groove (8) movably clamps a fixing assembly (9), and the fixing assembly (9) is located on the left and right sides of the filter piece (7).

2. The online screen changer according to claim 1, characterized in that: The sealing assembly (6) comprises a clamping frame (61), the clamping frame (61) is adsorbed and clamped in the first clamping groove (5), the inside of the clamping frame (61) movably clamps an elastic sheet (62) and a clamping ring (63), the clamping ring (63) is located on the inner side of the elastic sheet (62), the inner side of the clamping ring (63) is provided with a second clamping groove (64), and the inside of the second clamping groove (64) movably clamps a sealing rubber ring (65).

3. The online screen changer according to claim 2, characterized in that: The fixing assembly (9) comprises a sliding block (91) and a limiting plate (92), the sliding block (91) is movably clamped in the installation groove (8), the limiting plate (92) is fixedly connected to one side of the installation groove (8) close to the outside, the inside of the sliding block (91) movably clamps a threaded column (93), the threaded column (93) is screwedly connected to the inside of the sliding block (91), and the outer side of the threaded column (93) is provided with a hexagonal hole (94).

4. The online screen changer according to claim 3, characterized in that: The filter piece (7) comprises a filter screen (71) and a fixing ring (72), the filter screen (71) is fixedly connected to the inner side of the fixing ring (72), and the fixing ring (72) is movably clamped in the sliding plate (2).

5. The online screen changer according to claim 2, characterized in that: The elastic sheet (62) is made of metal material, and the elastic sheet (62) is arranged in a "V" shape.

6. The online screen changer according to claim 2, characterized in that: The clamping ring (63) is flush with the inner side of the screen changer body (1), and the cross section of the sealing rubber ring (65) is circular.

7. The online screen changer according to claim 4, characterized in that: The inside of the sliding block (91) is movably clamped in the inside of the fixing ring (72).

8. The online screen changer according to claim 3, characterized in that: The sliding block (91) is attached to the inner wall of the installation groove (8).

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