Positioning tool in production of flexible tubular membrane element

Abstract

The utility model discloses a positioning tool in flexible tubular membrane element production, which comprises a top chuck, a plurality of middle support sheets and a bottom positioning disc, the plurality of middle support sheets are arranged between the top chuck and the bottom positioning disc, and the bottom positioning disc is provided with a plurality of through holes. When being used, the positioning tool in the flexible tubular membrane element production disclosed by the utility model is respectively arranged at the top and the bottom of a flexible tubular membrane element, and can ensure that membrane tubes are vertical, parallel and untwisted, keep a fixed distance and realize effective positioning, so that the hydraulic condition in the flexible tubular membrane element is stable, and the production efficiency of the flexible tubular membrane element is improved. And a central pipe is not used for supporting, the filling area in the flexible tubular membrane element is not influenced, and the flexible tubular membrane element is simple in overall structure, ingenious in design, low in manufacturing cost, convenient to operate, good in positioning effect and suitable for industrial popularization and application.

Description

Technical Field

[0001] This utility model belongs to the field of tubular membrane technology, specifically relating to a positioning tooling used in the production of flexible tubular membrane elements. Background Technology

[0002] In the production and assembly of flexible tubular membrane elements, to ensure the stability of the hydraulic conditions within the membrane element and membrane tubes during operation, the membrane tubes must meet the following four requirements: verticality; parallelism between membrane tubes; uniform spacing between membrane tubes; and no twisting of the membrane tubes. Therefore, using appropriate positioning fixtures is crucial during production. The positioning fixtures need to be easy to operate to reduce production time and improve efficiency. Simultaneously, the positioning fixtures must ensure that the membrane tubes meet the above four requirements to guarantee product quality.

[0003] Rigid tubular membranes, such as ceramic membranes, can be assembled using multi-hole positioning plates at the center, top, middle, or bottom of the membrane tube to fix its position and ensure it meets requirements for verticality, parallelism, and spacing. However, flexible tubular membranes, due to their flexibility, cannot have a central positioning plate. They typically use a central tube with positioning discs at both ends to support the flexible membrane. However, using a central tube reduces the filling area of ​​the membrane tube, especially with large diameters. For example, components assembled from a 1.5cm diameter membrane tube may have their effective area reduced by approximately 3-7% if a central tube is used. Therefore, developing a positioning fixture that is easy to install and use, does not affect the filling area, and effectively positions the membrane tube is of significant practical importance. Utility Model Content

[0004] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a positioning tooling for the production of flexible tubular membrane elements.

[0005] To achieve the above objectives and technical effects, the technical solution adopted by this utility model is as follows:

[0006] A positioning fixture for the production of flexible tubular membrane elements includes a top chuck, several middle support plates, and a bottom positioning plate. The middle support plates are disposed between the top chuck and the bottom positioning plate, and the bottom positioning plate has several through holes.

[0007] Furthermore, the top chuck is provided with several inwardly protruding parts, the inner edge of the inwardly protruding parts of the top chuck is aligned with the inner edge of the middle support piece, and the outer edge of the middle support piece is aligned with the outer edge of the bottom positioning plate.

[0008] Furthermore, the number n of the inwardly protruding portions is equal to the number m of the central support pieces.

[0009] Furthermore, the middle support plate is evenly bonded between the top chuck and the bottom positioning plate.

[0010] Furthermore, the inner diameter i and width g of the inwardly protruding portion respectively satisfy:

[0011] i = a / 2 - h1;

[0012] g = c + 2mm;

[0013] Where h1 is the thickness of the central support piece and c is the width of the central support piece.

[0014] Furthermore, the inner diameter h of the top chuck satisfies the following relationship with its diameter f:

[0015] h = f / 2 - (4mm ~ 8mm).

[0016] Furthermore, the thickness of the top chuck is 3-7 mm.

[0017] Furthermore, the central support piece has an arc-shaped structure, and its outer diameter b and inner diameter d respectively satisfy:

[0018] b = a / 2;

[0019] d = b - h1;

[0020] Where h1 is the thickness of the central support piece, and the value of h1 ranges from 2 to 6 mm.

[0021] Furthermore, the number of the central support pieces is 4-8, the width c is 20-60mm, and the height e is 20-40mm.

[0022] Furthermore, the thickness of the bottom positioning plate is 2-5mm.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This utility model discloses a positioning fixture for the production of flexible tubular membrane elements. In use, it is installed at the top and bottom of the flexible tubular membrane element to ensure that the membrane tubes are vertical, parallel, and without twisting, and to maintain a fixed spacing, thus achieving effective positioning. This ensures stable hydraulic conditions inside the flexible tubular membrane element, and does not require a central tube for support, so it does not affect the filling area inside the flexible tubular membrane element. The overall structure is simple, ingeniously designed, low in manufacturing cost, easy to operate, and has a good positioning effect, making it suitable for industrial promotion and use. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a positioning tooling used in the production of a flexible tubular membrane element according to this utility model.

[0026] Figure 2 An exploded view of a positioning fixture used in the production of a flexible tubular membrane element according to this utility model.

[0027] Figure 3 This is a schematic diagram of the bottom positioning plate of this utility model;

[0028] Figure 4-5 These are schematic diagrams of the structure of the central support piece of this utility model;

[0029] Figure 6 This is a schematic diagram of the top chuck of this utility model;

[0030] Figure 7 This is a schematic diagram of the installation of a positioning fixture in the production of a flexible tubular membrane element according to this utility model.

[0031] Figure 8 For the present utility model Figure 7 Enlarged view of a portion of point A in the middle. Detailed Implementation

[0032] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0033] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0034] like Figure 1-8 As shown, a positioning fixture for the production of flexible tubular membrane elements includes a top chuck 1, a middle support plate 2, and a bottom positioning plate 3. Several middle support plates 2 are provided, and several middle support plates 2 are bonded to the edge of the bottom positioning plate 3. Several middle support plates 2 are evenly distributed between the top chuck 1 and the bottom positioning plate 3. Several through holes 4 are evenly opened on the bottom positioning plate 3.

[0035] The diameter f of the top chuck 1 is equal to the outer diameter of the outermost edge of the membrane element end cap to be assembled.

[0036] The inner diameter h of the top chuck 1 depends on the required strength of the top chuck 1, h = f / 2 - (4mm ~ 8mm).

[0037] The thickness of the top chuck 1 depends on the strength requirements and can be selected from 3 to 7 mm.

[0038] The top chuck 1 has n inwardly protruding parts 11, where n = the number of central support plates 2, m. The inner diameter i and width g of the inwardly protruding parts 11 satisfy the following conditions:

[0039] i = a / 2 - h1;

[0040] g = c + 2mm;

[0041] Where h1 is the thickness of the central support piece 2 and c is the width of the central support piece 2.

[0042] The number of middle support pieces 2, m, can be determined according to the space available for bonding on the bottom positioning plate 3, and is generally 4-8 pieces.

[0043] The central support piece 2 has an arc-shaped structure. Its outer diameter b = a / 2 and inner diameter d depend on the thickness h1 of the central support piece 2. Generally, it is determined according to the strength requirements and positioning space. The value range of h1 is 2-6mm, and d = b-h1.

[0044] The width c of the middle support plate 2 is determined by the free area on the bottom positioning plate 3, and is generally between 20-60mm.

[0045] The height e of the middle support plate 2 determines the position of the bottom positioning plate 3 on the membrane tube, which can be determined according to the structure and size of the membrane element and membrane tube, and is generally 20-40mm.

[0046] The diameter 'a' of the bottom positioning plate 3 is determined according to the inner diameter of the tubular membrane element to be assembled.

[0047] The thickness of the bottom positioning plate 3 depends on the strength requirements and is generally controlled between 2-5mm.

[0048] The materials used for positioning fixtures include, but are not limited to, rigid plastic materials such as acrylic, PP, PE, and PC.

[0049] Before use, first use adhesive compatible with the positioning fixture to bond the top chuck 1, middle support piece 2, and bottom positioning plate 3 of one set of positioning fixtures together. Then, glue the bottom positioning plate 3 to the middle support piece 2 of the other set of positioning fixtures together, without bonding the top chuck 1 yet. During assembly and bonding, the outer edge of the middle support piece 2 should be aligned with the outer edge of the bottom positioning plate 3. Distribute the middle support pieces 2 evenly along the circumference of the bottom support plate 3 according to the number of pieces. Align the inner edge of the inwardly protruding part of the top chuck 1 with the inner edge of the middle support piece 2, and then bond them together.

[0050] In use, two sets of positioning fixtures are used, one for the top and one for the bottom of the flexible tubular membrane element. Specifically, the membrane shell of the flexible tubular membrane element is erected with its bottom suspended. The membrane tube is installed on the positioning fixture through the through hole 4. The membrane tube with the positioning fixture installed is placed into the membrane shell. The top is secured to the top of the membrane shell end cap by the top chuck 1. The bottom of the membrane shell is ensured to be naturally vertical and parallel, with the membrane tube extending a certain distance above the upper and lower edges of the membrane shell. At the bottom of the membrane shell, the bottom top chuck 1 is attached to the middle support piece 2, thus completing the installation of the bottom positioning fixture. Finally, the membrane element is produced by encapsulating it with glue according to standard procedures.

[0051] The parts or structures not specifically described in this utility model can be made using existing technology or existing products, and will not be elaborated here.

[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning tooling for the production of flexible tubular membrane elements, characterized in that, It includes a top chuck, several middle support plates, and a bottom positioning plate. The several middle support plates are disposed between the top chuck and the bottom positioning plate, and the bottom positioning plate has several through holes.

2. The positioning fixture for the production of flexible tubular membrane elements according to claim 1, characterized in that, The top chuck has several inwardly protruding parts, the inner edge of which is aligned with the inner edge of the middle support piece, and the outer edge of the middle support piece is aligned with the outer edge of the bottom positioning plate.

3. The positioning fixture for the production of flexible tubular membrane elements according to claim 2, characterized in that, The number n of the inwardly protruding portions is equal to the number m of the central support pieces.

4. The positioning fixture for the production of flexible tubular membrane elements according to claim 2, characterized in that, The central support plate is evenly bonded between the top chuck and the bottom positioning plate.

5. The positioning fixture for the production of flexible tubular membrane elements according to claim 2, characterized in that, The inner diameter i and width g of the inwardly protruding portion respectively satisfy: i = a / 2 - h1; g = c + 2mm; Where h1 is the thickness of the central support piece and c is the width of the central support piece.

6. The positioning fixture for the production of flexible tubular membrane elements according to claim 1, characterized in that, The inner diameter h and the diameter f of the top chuck satisfy the following relationship: h = f / 2 - (4mm ~ 8mm).

7. The positioning fixture for the production of flexible tubular membrane elements according to claim 1, characterized in that, The thickness of the top chuck is 3-7mm.

8. The positioning fixture for the production of flexible tubular membrane elements according to claim 1, characterized in that, The central support piece has an arc-shaped structure, and its outer diameter b and inner diameter d satisfy the following: b = a / 2; d = b - h1; Where h1 is the thickness of the central support piece, and the value of h1 ranges from 2 to 6 mm.

9. The positioning fixture for the production of flexible tubular membrane elements according to claim 1, characterized in that, The number of the central support plates is 4-8, the width c is 20-60mm, and the height e is 20-40mm.

10. The positioning fixture for the production of flexible tubular membrane elements according to claim 1, characterized in that, The thickness of the bottom positioning plate is 2-5mm.

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