PTFE (Polytetrafluoroethylene) filter bag with good mounting and sealing effects

Abstract

The utility model discloses a PTFE (Polytetrafluoroethylene) filter bag with a good mounting and sealing effect, which comprises a filter bag body, a limiting edge arranged at the top end of the filter bag body, a first sealing sleeve sleeved at the top end outside the filter bag body, a pressing elastic sheet arranged on the outer side surface of the filter bag body and matched with the first sealing sleeve, and a mounting tubesheet provided with a mounting opening, a limiting section is arranged at the bottom end of the mounting opening, a second sealing sleeve is arranged on the inner side of the limiting section, the first sealing sleeve and the second sealing sleeve are in pressing fit, a keel is arranged in the filter bag body, a pressing frame is arranged at the top of the keel, and a lock catch is arranged between the pressing frame and the mounting pattern plate. According to the utility model, the connection sealing performance between the filter bag body and the mounting tubesheet during mounting can be improved, and the filtering effect of the filter bag body is improved.

Description

Technical Field

[0001] This utility model relates to the field of filter bag technology, and more specifically, to a PTFE filter bag with good sealing performance. Background Technology

[0002] PTFE (polytetrafluoroethylene) filter bags are a high-performance filtration material widely used in various industrial fields, especially in applications requiring high filtration efficiency and corrosion resistance. PTFE filter bags typically use PTFE fibers or PTFE membranes as the base material, manufactured through spinning or membrane technology. To improve mechanical strength and filtration performance, PTFE filter bags can be combined with other materials (such as polyester, glass fiber, etc.). They exhibit extremely high corrosion resistance to acids, alkalis, solvents, and other chemicals, making them suitable for various corrosive environments.

[0003] In most existing PTFE filter bags, they are installed inside the bag filter dust collector via a mounting plate and fixed to the plate by a keel. However, in this case, the installation structure is simple, and the keel's compression effect on the filter bag is poor. This makes it easy for gaps to exist between the filter bag and the mounting plate, resulting in poor sealing. Consequently, unfiltered airflow can easily flow out from the gaps between the filter bag and the mounting plate, affecting the filtration effect. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides a PTFE filter bag with good installation and sealing effect, thereby solving the technical problem mentioned in the background art that the PTFE filter bag has poor sealing between itself and the installation plate during installation, which affects the filtration effect.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A PTFE filter bag with good sealing effect includes a filter bag body, a limiting edge at the top of the filter bag body, a first sealing sleeve fitted on the outer top of the filter bag body, a pressing spring on the outer side of the filter bag body in conjunction with the first sealing sleeve, and a mounting plate with an installation opening at the bottom of the installation opening and a limiting section at the bottom. A second sealing sleeve is provided inside the limiting section, and the first and second sealing sleeves are pressed and fitted together. A keel is provided inside the filter bag body, and a pressing frame is provided at the top of the keel. A locking buckle is provided between the pressing frame and the mounting plate.

[0009] The present invention is further configured such that a first sealing gasket is integrally provided at the top of the first sealing sleeve to enhance the connection and sealing between the first sealing sleeve and the mounting plate.

[0010] The present invention is further provided in that a second sealing gasket is integrally provided at the top of the second sealing sleeve, and the first sealing gasket and the second sealing gasket are tightly fitted together. The cooperation of the first sealing gasket and the second sealing gasket can improve the sealing performance between the filter bag body and the installation plate during installation.

[0011] The present invention is further configured such that the first sealing sleeve includes a first connecting section, the first connecting section is fitted to the side wall of the filter bag body, a second connecting section is provided on the first connecting section at an outward angle, and a pressing section is provided on the top of the second connecting section and fitted to the second sealing sleeve. The tight fit between the first sealing sleeve and the second sealing sleeve can be achieved through the cooperation of the first connecting section, the second connecting section and the pressing section.

[0012] The present invention is further configured such that the clamping spring includes a connecting piece, the bottom end of the connecting piece is connected to the outer wall of the filter bag body, and the top end is provided with a clamping piece. The clamping piece is pressed against the inner side of the clamping section. The clamping piece is pressed against the surface of the clamping section by the outward elastic clamping performance of the connecting piece itself. Thus, when the first sealing sleeve moves inward with the filter bag body, under the action of external force, the connecting piece is squeezed and can carry the clamping piece to retract inward, so that the filter bag body can be smoothly installed into the installation port.

[0013] The present invention is further configured such that a first sealing ring is provided on the outer side of the pressing section, and a second sealing ring is provided on the inner side of the second sealing sleeve. The first sealing ring and the second sealing ring engage with each other. When the filter bag body carrying the first sealing gasket enters the installation port, the first sealing ring and the second sealing ring will engage with each other. In this way, the cooperation of the first sealing ring and the second sealing ring can further improve the connection sealing between the first sealing sleeve and the second sealing sleeve, and further improve the sealing performance of the filter bag body during use.

[0014] The present invention is further configured such that the latch includes a suspension end, the suspension end is disposed on the outer edge of the clamping frame, and a locking end is provided on the mounting plate. The locking end is suspended on the suspension end and then pressed, thereby realizing the quick pressing and fixing between the clamping frame and the mounting plate. The latch is a known product and will not be described in detail in this invention.

[0015] The present invention is further configured such that the pressing frame is provided with positioning posts, and the limiting edge, the first sealing gasket, the second sealing gasket, and the mounting plate are all provided with positioning grooves. When installing the filter bag body, the keel frame is inserted into the filter bag body, and then the filter bag body is carried into the installation port to realize the installation of the filter bag body on the mounting plate. During this process, the positioning posts on the pressing frame will pass through the positioning grooves on the limiting edge, the first sealing gasket, and the second sealing gasket, and finally extend into the positioning groove on the mounting plate, thereby realizing the positioning and installation of the filter bag body on the mounting plate, improving the installation accuracy, and facilitating the locking and fixing of the buckle.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a PTFE filter bag with good sealing effect, which has the following advantages:

[0018] 1. This utility model provides a first sealing sleeve, a second sealing sleeve, and a pressing spring between the filter bag body and the mounting plate. In this way, when the filter bag body carrying the frame is installed into the installation opening, it will be located inside the limiting section. Under the action of the spring, the first sealing sleeve can be pressed against the second sealing sleeve, thereby improving the connection and sealing between the filter bag body and the limiting section, and thus improving the sealing performance of the filter bag body during use.

[0019] 2. Simultaneously, this utility model provides a first sealing gasket at the top of the first sealing sleeve and a second sealing gasket at the top of the second sealing sleeve. Additionally, a limiting edge is provided at the top of the filter bag body, and a pressing frame is provided at the top of the keel. Thus, when the filter bag body, carrying the keel frame, is installed in the mounting opening of the mounting plate, the first sealing gasket can be pressed against the surface of the second sealing gasket through the cooperation of the pressing frame and the limiting edge. This further improves the sealing performance between the filter bag body and the mounting opening, and enhances the sealing performance of the filter bag body during use.

[0020] 3. At the same time, this utility model has a locking buckle between the pressing frame and the mounting plate. In this way, after the keel carrying the pressing frame presses and fixes the filter bag body, the locking buckle can realize the connection and fixation between the pressing frame and the mounting plate, so that the pressing frame can be pressed down under the action of external force, improving the installation stability of the filter bag body. At the same time, it improves the tightness of the fit between the first sealing gasket and the second sealing gasket, thereby further improving the sealing performance of the filter bag body during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a PTFE filter bag with good sealing effect according to this utility model. Figure 1 ;

[0022] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0023] Figure 3 This is an exploded cross-sectional view of the overall structure of this utility model;

[0024] Figure 4 This is a cross-sectional schematic diagram of a partial connection structure between the filter bag body and the first sealing sleeve in this utility model;

[0025] Figure 5 This is a cross-sectional schematic diagram of the connection structure between the first sealing sleeve and the clamping spring in this utility model.

[0026] In the diagram: 1. Filter bag body; 2. Limiting edge; 3. First sealing sleeve; 4. Compression spring; 5. Mounting plate; 6. Mounting port; 7. Limiting section; 8. Second sealing sleeve; 9. Keel; 10. Compression frame; 11. Lock; 12. First sealing gasket; 13. Second sealing gasket; 14. First connecting section; 15. Second connecting section; 16. Compression section; 17. Connecting piece; 18. Compression piece; 19. First sealing ring; 20. Second sealing ring; 21. Suspension end; 22. Locking end; 23. Positioning post; 24. Positioning groove. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 A PTFE filter bag with good sealing effect includes a filter bag body 1, a limiting edge 2 is provided at the top of the filter bag body 1, a first sealing sleeve 3 is sleeved on the outer top of the filter bag body 1, and a compression spring 4 is provided on the outer side of the filter bag body 1 in conjunction with the first sealing sleeve 3.

[0031] This utility model also includes a mounting plate 5, which has an installation opening 6. A limiting section 7 is provided at the bottom of the mounting opening 6, and a second sealing sleeve 8 is provided on the inner side of the limiting section 7. The first sealing sleeve 3 and the second sealing sleeve 8 are pressed and fitted together.

[0032] When the filter bag body 1 carrying the keel 9 frame is installed into the installation port 6, it will be located inside the limiting section 7. Under the action of the spring piece, the first sealing sleeve 3 can be pressed against the second sealing sleeve 8, thereby improving the connection sealing between the filter bag body 1 and the limiting section 7, and thus improving the sealing performance of the filter bag body 1 during use.

[0033] In this utility model, a keel 9 is provided inside the filter bag body 1, a pressing frame 10 is provided on the top of the keel 9, and a locking buckle 11 is provided between the pressing frame 10 and the mounting plate 5.

[0034] This utility model provides a latch 11 between the clamping frame 10 and the mounting plate 5. After the keel 9 carries the clamping frame 10 to clamp and fix the filter bag body 1, the latch 11 can realize the connection and fixation between the clamping frame 10 and the mounting plate 5, so that the clamping frame 10 can be pressed down under the action of external force, improving the installation stability of the filter bag body 1. At the same time, it improves the tightness of the fit between the first sealing gasket 12 and the second sealing gasket 13, thereby further improving the sealing performance of the filter bag body 1 during use.

[0035] Please see Figures 1-5 As one embodiment of the first sealing sleeve 3: the top end of the first sealing sleeve 3 is integrally provided with a first sealing gasket 12 to enhance the connection and sealing between the first sealing sleeve 3 and the mounting plate 5.

[0036] The top of the second sealing sleeve 8 is integrally provided with a second sealing gasket 13. The first sealing gasket 12 and the second sealing gasket 13 are tightly fitted together. The cooperation of the first sealing gasket 12 and the second sealing gasket 13 can improve the sealing performance between the filter bag body 1 and the installation tube plate 5 during installation.

[0037] Please see Figures 1-5 As one embodiment of the first sealing sleeve 3: the first sealing sleeve 3 includes a first connecting section 14, which is attached to the side wall of the filter bag body 1. A second connecting section 15 is provided on the first connecting section 14 at an outward angle. A pressing section 16 is provided on the top of the second connecting section 15 and attached to the second sealing sleeve 8. The tight fit between the first sealing sleeve 3 and the second sealing sleeve 8 can be achieved through the cooperation of the first connecting section 14, the second connecting section 15 and the pressing section 16.

[0038] Please see Figures 1-5As one embodiment of the compression spring 4: the compression spring 4 includes a connecting piece 17, the bottom end of the connecting piece 17 is connected to the outer wall of the filter bag body 1, and the top end is provided with a compression piece 18. The compression piece 18 is pressed against the inner side of the compression section 16. The compression piece 18 is pressed against the surface of the compression section 16 by the outward elastic compression performance of the connecting piece 17 itself. Thus, when the first sealing sleeve 3 moves inward with the filter bag body 1, under the action of external force, the connecting piece 17 is squeezed and can carry the compression piece 18 to retract inward, so that the filter bag body 1 can be smoothly installed into the installation port 6.

[0039] Please see Figures 1-5 As one embodiment of the pressing section 16: a first sealing ring 19 is provided on the outer side of the pressing section 16, and a second sealing ring 20 is provided on the inner side of the second sealing sleeve 8. The first sealing ring 19 and the second sealing ring 20 engage with each other. When the filter bag body 1 carrying the first sealing gasket 12 enters the installation port 6, the first sealing ring 19 and the second sealing ring 20 will engage with each other. In this way, the cooperation of the first sealing ring 19 and the second sealing ring 20 can further improve the connection sealing between the first sealing sleeve 3 and the second sealing sleeve 8, and further improve the sealing performance of the filter bag body 1 during use.

[0040] Please see Figures 1-5 As one embodiment of the latch 11: The latch 11 includes a suspension end 21, which is disposed on the outer edge of the clamping frame 10. A locking end 22 is provided on the mounting plate 5. The locking end 22 is suspended on the suspension end 21 and then pressed to achieve quick pressing and fixing between the clamping frame 10 and the mounting plate 5. The latch 11 is a known product and will not be described in detail in this utility model.

[0041] Please see Figures 1-5 As one embodiment of the clamping frame 10: the clamping frame 10 is provided with positioning posts 23, and positioning grooves 24 are provided on the limiting edge 2, the first sealing gasket 12, the second sealing gasket 13 and the mounting plate 5. When installing the filter bag body 1, the keel 9 is inserted into the filter bag body 1, and then the filter bag body 1 is carried into the installation port 6 to realize the installation of the filter bag body 1 on the mounting plate 5. During this process, the positioning posts 23 on the clamping frame 10 will pass through the positioning grooves 24 on the limiting edge 2, the first sealing gasket 12 and the second sealing gasket 13, and finally extend into the positioning grooves 24 on the mounting plate 5, so as to realize the positioning installation of the filter bag body 1 on the mounting plate 5, while improving the installation accuracy and facilitating the locking and fixing of the buckle 11.

[0042] In summary:

[0043] This utility model provides a first sealing sleeve 3, a second sealing sleeve 8, and a pressing spring 4 that cooperate with each other between the filter bag body 1 and the mounting plate 5. In this way, when the filter bag body 1 carrying the keel 9 frame is installed into the mounting opening 6, it will be located inside the limiting section 7. Thus, under the action of the spring, the first sealing sleeve 3 can be pressed against the second sealing sleeve 8, thereby improving the connection and sealing between the filter bag body 1 and the limiting section 7, and thus improving the sealing performance of the filter bag body 1 during use.

[0044] Meanwhile, the present invention provides a first sealing gasket 12 at the top of the first sealing sleeve 3 and a second sealing gasket 13 at the top of the second sealing sleeve 8. Additionally, a limiting edge 2 is provided at the top of the filter bag body 1 and a pressing frame 10 is provided at the top of the keel 9. Thus, when the filter bag body 1 carrying the keel 9 is installed in the installation opening 6 of the installation plate 5, the first sealing gasket 12 can be pressed against the surface of the second sealing gasket 13 by the cooperation of the pressing frame 10 and the limiting edge 2. This can further improve the connection sealing between the filter bag body 1 and the installation opening 6 and improve the sealing performance of the filter bag body 1 during use.

[0045] Meanwhile, this utility model provides a locking buckle 11 between the pressing frame 10 and the mounting plate 5. In this way, after the keel 9 carries the pressing frame 10 to press and fix the filter bag body 1, the locking buckle 11 can realize the connection and fixation between the pressing frame 10 and the mounting plate 5, so that the pressing frame 10 can be pressed down under the action of external force, improving the installation stability of the filter bag body 1. At the same time, it improves the tightness of the fit between the first sealing gasket 12 and the second sealing gasket 13, thereby further improving the sealing performance of the filter bag body 1 during use.

[0046] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0047] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

[0048] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

[0049] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A PTFE filter bag with good sealing effect during installation, comprising a filter bag body (1), characterized in that: The top end of the filter bag body (1) is provided with a limiting edge (2), the outer top end of the filter bag body (1) is sleeved with a first sealing sleeve (3), and the outer side of the filter bag body (1) is provided with a pressing elastic sheet (4) matched with the first sealing sleeve (3); Further comprising a mounting flower plate (5), the mounting flower plate (5) is provided with a mounting port (6), the bottom end of the mounting port (6) is provided with a limiting section (7), the inner side of the limiting section (7) is provided with a second sealing sleeve (8), and the first sealing sleeve (3) and the second sealing sleeve (8) are tightly pressed and combined; The inside of the filter bag body (1) is provided with a keel (9), the top of the keel (9) is provided with a pressing frame (10), and the pressing frame (10) is provided with a lock buckle (11) between the mounting flower plate (5).

2. The PTFE filter bag of claim 1, wherein: The top end of the first sealing sleeve (3) is integrally provided with a first sealing gasket (12).

3. The PTFE filter bag of claim 2, wherein: The top end of the second sealing sleeve (8) is integrally provided with a second sealing gasket (13), and the first sealing gasket (12) and the second sealing gasket (13) are tightly combined.

4. The PTFE filter bag of claim 1, wherein: The first sealing sleeve (3) comprises a first connecting section (14), the first connecting section (14) is combined with the side wall of the filter bag body (1), the first connecting section (14) is outwardly inclined provided with a second connecting section (15), and the top of the second connecting section (15) is provided with a pressing section (16) combined with the second sealing sleeve (8).

5. The PTFE filter bag of claim 4, wherein: The pressing elastic sheet (4) comprises a connecting sheet (17), the bottom end of the connecting sheet (17) is connected with the outer side wall of the filter bag body (1), and the top end is provided with a pressing sheet (18), and the pressing sheet (18) is tightly pressed on the inner side of the pressing section (16).

6. The PTFE filter bag of claim 5, wherein: The outer side of the pressing section (16) is provided with a first sealing ring (19), the inner side of the second sealing sleeve (8) is provided with a second sealing ring (20), and the first sealing ring (19) and the second sealing ring (20) are engaged.

7. The PTFE filter bag with good sealing effect of claim 1-6, characterized in that: The lock buckle (11) comprises a hanging end (21), the hanging end (21) is arranged on the outer edge of the pressing frame (10), and the mounting flower plate (5) is provided with a locking end (22) matched.

8. The PTFE filter bag of claim 1, wherein: The pressing frame (10) is provided with a positioning column (23), and the limiting edge (2), the first sealing gasket (12), the second sealing gasket (13) and the mounting flower plate (5) are all provided with a positioning groove (24) matched.

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