A connecting structure of an acid and alkali resistant membrane and a membrane device
The dual-layer fixing structure, which combines threaded and snap-fit connections with a dynamic compensation design of shape memory alloy blocks and expansion rings, solves the problems of loosening and leakage between acid and alkali resistant membranes and membrane equipment, achieving a more stable and sealed connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUAN LAILAILAIDE NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-07
AI Technical Summary
The screw fixing method between acid and alkali resistant membranes and membrane equipment is prone to loosening, leading to equipment leakage, and the installation site has gaps and poor sealing.
The dual-layer fixing structure, which combines threaded and snap-fit connections, along with the shape memory alloy locking blocks and slots, ensures a secure installation of the diaphragm. At the same time, sealing rings and expansion rings are used to dynamically compensate for gaps, enhancing sealing performance.
It effectively reduces membrane loosening and leakage, improves the stability and sealing of membrane equipment, and enhances the applicability of the equipment.
Smart Images
Figure CN224462554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diaphragm connection technology, specifically to a connection structure between an acid and alkali resistant diaphragm and a membrane device. Background Technology
[0002] Acid and alkali resistant films refer to thin film materials with excellent acid and alkali resistance. These special film materials maintain stable performance in strong acid or alkali environments. The main working principle of acid and alkali resistant protective films is that their materials have stable chemical properties and do not easily react with acids or alkalis. This stability allows the protective film to remain intact in acidic or alkaline environments, effectively protecting the covered items from corrosion. In addition, these films typically possess good physical properties, such as abrasion resistance and scratch resistance, further enhancing their protective effect.
[0003] When acid and alkali resistant membranes are installed with membrane equipment, they are usually fixed with screws. After long-term use, the screws may loosen, causing internal leakage and rendering the equipment unusable. During the installation of acid and alkali resistant membranes, gaps may exist at the installation point between the membrane and the membrane equipment. Poor sealing at these gaps can also lead to leakage in the membrane equipment. Utility Model Content
[0004] To overcome the above-mentioned defects, this utility model provides a connection structure between an acid and alkali resistant membrane and a membrane device. This solves the technical problem that the installation of acid and alkali resistant membranes and membrane devices usually uses screws for fixing, which can loosen after long-term use. When the screws loosen, internal leakage occurs, rendering the device unusable. In addition, when installing acid and alkali resistant membranes, gaps exist at the installation point between the acid and alkali resistant membrane and the membrane device, and poor sealing at these gaps leads to leakage in the membrane device.
[0005] According to one aspect, at least one embodiment of the present invention provides a connection structure between an acid and alkali resistant membrane and a membrane device, comprising: a device body, wherein a membrane body is installed on the left side inside the device body and an installation hole is provided inside the membrane body, a fixing plate is installed on the right side of the upper end of the membrane body, and a shape memory alloy is fixedly installed on the upper end of the fixing plate, a card block is fixedly installed on the upper end of the shape memory alloy, and a magnetic plate is fixedly installed on the upper end of the card block;
[0006] The second fixing screw is fixedly installed on the upper left side of the diaphragm body. A limiting protrusion is fixedly installed on the right side surface of the second fixing screw. A connecting part is installed on the upper right side of the second fixing screw. A first pressure plate is installed on the outer side of the second fixing screw.
[0007] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: a connecting rod fixedly installed on the right side of the connection, and an installation port opened on the left side of the connecting rod, a connection port opened on the right side of the connecting rod, and a second pressure plate fixedly installed on the outside of the connecting rod.
[0008] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: an installation plate fixedly installed at the outer end of the device body, a connecting rod inserted through the upper end of the installation plate, slots opened on both sides inside the device body, and a connecting block installed inside the slots, and a fixing screw fixedly installed inside the device body.
[0009] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: a sealing ring fixedly installed on the outer side of the membrane body, a groove opened at the right end of the outer side of the membrane body, and a memory alloy II fixedly installed inside the groove, and an expansion ring installed at the upper end of the memory alloy II.
[0010] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: the fixing plate is symmetrically installed on the front and rear sides of the membrane body with the membrane body as the center reference; the shape of the locking block fits the shape of the slot; the second fixing screw is threadedly connected to the mounting port of the connecting rod through the connection point; and the first pressure plate is fixedly connected between the limiting protrusion and the connection point.
[0011] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: a threaded connection between the connecting port of the connecting rod and a fixing screw; the second pressure plate is a detachable structure; and the connecting rod is interlocked with the membrane body through a mounting hole.
[0012] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: the slot is symmetrically installed on the front and rear sides of the device body with the interior of the device body as the center reference, an adsorption magnetic sheet is fixedly installed inside the slot, and the adsorption magnetic sheet and the magnetic plate form an adsorption connection.
[0013] For example, in at least one embodiment of the present invention, a connection structure between an acid and alkali resistant membrane and a membrane device is provided, which further includes: the second shape memory alloy has the same structure as the first shape memory alloy, the expansion ring is annular, and the number of the second shape memory alloy is four.
[0014] The beneficial effects of the embodiments of this utility model are as follows:
[0015] In this invention, the diaphragm body is initially fixed by a threaded connection between multiple fixing screws. Shape memory alloy is added to both sides of the diaphragm body, connecting the locking blocks. When the diaphragm is installed in the membrane equipment, the locking blocks and slots engage to further fix the diaphragm. This double-layer fixing through screw connection and engagement securely mounts the diaphragm to the upper part of the equipment body, reducing the risk of the diaphragm loosening and falling off. Furthermore, a sealing ring is added to the upper end of the diaphragm to seal any gaps. An expansion ring, also made of shape memory alloy, is added to the outside of the sealing ring. When the diaphragm deforms, the expansion ring dynamically compensates for any gaps. This dynamic compensation reduces leakage at these gaps, increasing applicability. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.
[0017] Figure 1 This is a schematic diagram of the connection structure between an acid and alkali resistant membrane and a membrane device in one embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the main structure of the device body of this utility model;
[0019] Figure 3 This is a schematic diagram of the diaphragm body structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the fixing screw structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the expansion ring structure of this utility model.
[0022] In the diagram: 1. Equipment body; 2. Mounting plate; 3. Connecting rod; 4. Slot; 5. Connecting block; 6. Fixing screw one; 7. Diaphragm body; 8. Mounting hole; 9. Fixing plate; 10. Shape memory alloy one; 11. Slot; 12. Magnetic plate; 13. Fixing screw two; 14. Restriction protrusion; 15. Connection; 16. First pressure plate; 17. Connecting rod; 18. Mounting port; 19. Connection port; 20. Second pressure plate; 21. Sealing ring; 22. Groove; 23. Shape memory alloy two; 24. Expansion ring. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.
[0024] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] like Figures 1-4As shown, it illustrates a connection structure between an acid and alkali resistant membrane and a membrane device in one embodiment of the present invention, including: a device body 1, a membrane body 7 installed on the left side inside the device body 1, and an installation hole 8 opened inside the membrane body 7, a fixing plate 9 installed on the right side of the upper end of the membrane body 7, and a shape memory alloy 10 fixedly installed on the upper end of the fixing plate 9, a locking block 11 fixedly installed on the upper end of the shape memory alloy 10, and a magnetic plate 12 fixedly installed on the upper end of the locking block 11.
[0030] The second fixing screw 13 is fixedly installed on the upper left side of the diaphragm body 7. A limiting protrusion 14 is fixedly installed on the right side surface of the second fixing screw 13. A connecting part 15 is installed on the upper right side of the second fixing screw 13. A first pressure plate 16 is installed on the outside of the second fixing screw 13.
[0031] For example, such as Figure 3 As shown, a connecting rod 17 is fixedly installed on the right side of the connecting joint 15, and an installation port 18 is opened on the left side of the connecting rod 17, a connection port 19 is opened on the right side of the connecting rod 17, and a second pressure plate 20 is fixedly installed on the outside of the connecting rod 17.
[0032] For example, such as Figure 2 As shown, an installation plate 2 is fixedly installed on the outer end of the equipment body 1, and a connecting rod 3 is inserted and connected to the upper end of the installation plate 2. Slots 4 are opened on both sides inside the equipment body 1, and connecting blocks 5 are installed inside the slots 4. A fixing screw 6 is fixedly installed inside the equipment body 1.
[0033] For example, such as Figure 2 As shown, the fixing plate 9 is symmetrically installed on the front and rear sides of the diaphragm body 7 with the diaphragm body 7 as the center reference. The shape of the locking block 11 fits the internal shape of the locking groove 4. The fixing screw 13 forms a threaded connection between the connecting part 15 and the mounting port 18 of the connecting rod 17. The first pressure plate 16 is fixedly connected between the limiting protrusion 14 and the connecting part 15.
[0034] For example, such as Figure 4 As shown, the connecting port 19 in the connecting rod 17 is threadedly connected to the fixing screw 6, the second pressure plate 20 is a detachable structure, and the connecting rod 17 is interlocked with the diaphragm body 7 through the mounting hole 8.
[0035] For example, such as Figure 2 As shown, the card slot 4 is symmetrically installed on the front and back sides of the device body 1 with the interior of the device body 1 as the center reference. An adsorption magnetic sheet is fixedly installed inside the card slot 4, and the adsorption magnetic sheet and the magnetic plate 12 form an adsorption connection.
[0036] In some examples, the device body 1 is mounted on an external structure via a mounting plate 2. A connecting rod 3 is inserted through the mounting plate 2 to connect adjacent device bodies 1. An adsorption magnetic sheet is installed inside the slot 4 to fix the card block 11. Connecting blocks 5 are fixedly installed on both sides inside the slot 4, and the connecting blocks 5 are arc-shaped. The diaphragm body 7 is installed on the upper end of the device body 1. The operator picks up the diaphragm body 7, inserts the connecting rod 17 into the mounting hole 8 of the diaphragm body 7, and fits the first pressure plate 16 onto the upper end of the connecting rod 17 so that it abuts against the right side of the diaphragm body 7. The connecting port 19 on the right side of the connecting rod 17 is threaded and tightened to the fixing screw 16 on the device body 1. Then, the first pressure plate 16 is fitted onto the upper end of the fixing screw 2 13. The fixing screw 2 13 passes through the left side of the diaphragm body 7 and is connected to the connecting rod 17 via its connecting point 15. After installation, tighten the fixing screw 13. After tightening the fixing screw, the first pressure plate 16 and the second pressure plate 20 fill the gaps on the left and right sides of the mounting hole 8 in the diaphragm body 7, respectively, to provide clamping force. While the diaphragm body 7 is placed, the locking block 11 on the right side of the diaphragm body 7 will enter the interior of the device body 1. The diaphragm body 7 is equipped with a memory alloy 10 through its fixing plate 9. The memory alloy 10 drives the locking block 11 to move (usually outward or in preparation for positioning). After the diaphragm body 7 is initially fixed, it is rotated at an angle. When rotating, the locking block 11 slides into the slot 4 along the arc-shaped connecting block 5 in the slot 4. The memory alloy 10 automatically performs position compensation to ensure that the locking block 11 and the slot 4 are properly matched. The magnetic adsorption sheet in the slot 4 and the magnetic plate 12 on the locking block 11 attract each other, providing reliable secondary fixation for the diaphragm body 7.
[0037] For example, such as Figure 5 As shown, it illustrates a connection structure between an acid and alkali resistant membrane and a membrane device in another embodiment of the present invention, including a sealing ring 21 fixedly installed on the outside of the membrane body 7, a groove 22 opened at the right end of the outside of the membrane body 7, and a memory alloy 23 fixedly installed inside the groove 22, with an expansion ring 24 installed on the upper end of the memory alloy 23.
[0038] For example, such as Figure 5 As shown, shape memory alloy 23 has the same structure as shape memory alloy 10, the expansion ring 24 is in the shape of a ring, and there are four shape memory alloys 23.
[0039] In some examples, after the diaphragm body 7 is installed with the device body 1, there are gaps at the corners. A sealing ring 21 is installed on the outside of the diaphragm body 7. The annular sealing ring 21 is used to fill the initial gap between the diaphragm body 7 and the device body 1 and provide a basic seal. In order to further enhance the sealing performance, a groove 22 is opened on the left side of the diaphragm body 7. A memory alloy 23 is installed in the groove 22. An expansion ring 24 is installed through the memory alloy 23. When the diaphragm body 7 deforms due to changes in ambient temperature or fluctuations in system pressure, the memory alloy 23 will deform accordingly. The deformation of the memory alloy 23 drives the expansion ring 24 to expand, contract or displace. The dynamic movement of the expansion ring 24 compensates for the gap changes caused by deformation between the diaphragm body 7 and the device body 1 in real time.
[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A connection structure between an acid and alkali resistant membrane and a membrane device, characterized in that, include: The device body (1) has a diaphragm body (7) installed on the left side inside the device body (1), and an installation hole (8) is opened inside the diaphragm body (7). A fixing plate (9) is installed on the right side of the upper end of the diaphragm body (7), and a memory alloy (10) is fixedly installed on the upper end of the fixing plate (9). A card block (11) is fixedly installed on the upper end of the memory alloy (10), and a magnetic plate (12) is fixedly installed on the upper end of the card block (11). Fixed screw two (13) is fixedly installed on the upper left side of the diaphragm body (7). A limiting protrusion (14) is fixedly installed on the right side surface of the fixed screw two (13). A connecting part (15) is installed on the upper right side of the fixed screw two (13). A first pressure plate (16) is installed on the outside of the fixed screw two (13).
2. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 1, characterized in that, A connecting rod (17) is fixedly installed on the right side of the connecting joint (15), and an installation port (18) is opened on the left side of the connecting rod (17). A connection port (19) is opened on the right side of the connecting rod (17), and a second pressure plate (20) is fixedly installed on the outside of the connecting rod (17).
3. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 1, characterized in that, The device body (1) is fixedly installed with an installation plate (2) at the outer end. A connecting rod (3) is inserted and connected to the upper end of the installation plate (2). The device body (1) has slots (4) on both sides inside, and a connecting block (5) is installed inside the slots (4). A fixing screw (6) is fixedly installed inside the device body (1).
4. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 1, characterized in that, A sealing ring (21) is fixedly installed on the outside of the diaphragm body (7). A groove (22) is opened on the right side of the outside of the diaphragm body (7), and a memory alloy II (23) is fixedly installed inside the groove (22). An expansion ring (24) is installed on the upper end of the memory alloy II (23).
5. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 1, characterized in that, The fixing plate (9) is symmetrically installed on the front and back sides of the diaphragm body (7) with the diaphragm body (7) as the center reference. The shape of the card block (11) fits the internal shape of the card slot (4). The fixing screw (13) is threadedly connected to the mounting port (18) of the connecting rod (17) through the joint (15). The first pressure plate (16) is fixedly connected between the limiting protrusion (14) and the joint (15).
6. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 2, characterized in that, The connecting port (19) of the connecting rod (17) is threadedly connected to the fixing screw (6), the second pressure plate (20) is a detachable structure, and the connecting rod (17) is interlocked with the diaphragm body (7) through the mounting hole (8).
7. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 3, characterized in that, The slot (4) is symmetrically installed on the front and back sides of the device body (1) with the inside of the device body (1) as the center reference. An adsorption magnetic sheet is fixedly installed inside the slot (4), and the adsorption magnetic sheet and the magnetic plate (12) form an adsorption connection.
8. The connection structure between an acid and alkali resistant membrane and a membrane device according to claim 4, characterized in that, The second shape memory alloy (23) has the same structure as the first shape memory alloy (10), the expansion ring (24) is in the shape of a ring, and the number of the second shape memory alloy (23) is four.