Sizing sleeve installation guide device of reverse osmosis membrane element central tube extrusion production line

Abstract

The utility model provides a reverse osmosis membrane element central tube extrusion production line sizing sleeve installation guide device, which comprises a reference seat and a guide post, the reference seat comprises a sleeve, a limiting circular truncated cone and a positioning cylinder which are coaxial, the limiting circular truncated cone is arranged between the sleeve and the positioning cylinder, four fixing holes are arranged on the limiting circular truncated cone, one end of the guide post is provided with a coaxial positioning ring, and the other end of the guide post is provided with a positioning hole. The other end of the guide post can extend into the sleeve, and the diameter of the guide post is consistent with the inner diameter of the sleeve; a receding pit is formed in the middle of the positioning ring. According to the utility model, the alignment precision of the die and the sizing sleeve in the production process can be obviously improved, the dependence on manual operation is reduced, the size and appearance qualification rate of products are greatly improved, and the rejection rate in the production process is effectively reduced, so that the resource waste is reduced, the product quality is improved, the operation flow is simplified, and the working intensity of operators is reduced; the production line operation efficiency is improved. The production cycle is shortened, the overall production efficiency is improved, and the requirement for rapid industrial development is met.

Description

Technical Field

[0001] This utility model belongs to the field of reverse osmosis membrane element production and debugging equipment, specifically relating to a sizing sleeve installation guide device for a reverse osmosis membrane element center tube extrusion production line. Background Technology

[0002] Reverse osmosis (RO) technology is a membrane separation technology widely used in water treatment. This technology removes dissolved salts, organic matter, bacteria, viruses, and other impurities from water through a semi-permeable membrane. Utilizing pressure difference as the driving force, water molecules pass through the semi-permeable membrane, while most solutes and other impurities are retained on one side, resulting in purified water and achieving purification and desalination. With the increasing pursuit of a higher quality of life, RO technology has been widely applied in industrial wastewater treatment and domestic drinking water production. One of the core components of a reverse osmosis membrane element is the central tube. The central tube plays a crucial role in support and separation within the entire reverse osmosis system. Through its structural design and material selection, the central tube can withstand the high pressure within the system while ensuring unobstructed water flow. It not only physically supports the membrane but also maximizes water permeation efficiency and reduces contaminant accumulation through its precise pore design and arrangement. Its role in the entire reverse osmosis process is vital. The central tube is produced by creating a semi-finished product through a pipe extrusion line, followed by machining to produce the finished product. In the pipe extrusion process, a die is used to form the shape of the central tube, while a sizing sleeve is used to ensure the stability of the central tube's shape and dimensions. The mold and sizing sleeve are installed on the extruder and vacuum cooling box of the production line, respectively. During operation, the two need to keep their axes aligned to ensure that the produced center tube products meet the requirements of size and appearance.

[0003] Currently, the alignment of molds and sizing sleeves mainly relies on visual alignment by operators. This process is not only cumbersome but also makes it difficult to guarantee perfect alignment, often resulting in dimensional and appearance defects in the produced center tubes. This inaccurate alignment method not only reduces production efficiency but also increases the scrap rate, affecting product quality and consistency. Differences in skill levels among operators can also lead to quality fluctuations within the same batch, making it difficult to guarantee product stability and reliability. Therefore, a new alignment method is urgently needed to solve this problem. Utility Model Content

[0004] This utility model provides a sizing sleeve installation guide device for a reverse osmosis membrane element center tube extrusion production line. It consists of a reference base and a guide column. The reference base comprises a sleeve, a limiting frustum, and a positioning cylinder, all integrally formed. The limiting frustum is located between the positioning cylinder and the sleeve, ensuring coaxial alignment of the sleeve, limiting frustum, and positioning cylinder. Multiple fixing holes are formed on the limiting frustum, allowing the reference base to be installed on the die using bolts. The guide column is a cylinder with a positioning ring at one end, coaxial with the guide column. This allows the free end of the guide column to extend into the sleeve, and a clearance recess is formed in the middle of the positioning ring to avoid obstructing the sizing sleeve. The coaxiality of the reference base and guide column is confirmed by the cooperation between the guide column and the sleeve. After adjusting the position of the sizing sleeve to mate with the guide column, the guide column is locked inside the sleeve using guide bolts, thus confirming the coaxiality of the sizing sleeve and the die.

[0005] To ensure that the guide post and the sleeve remain coaxial when the guide post is installed inside the sleeve, the diameter of the guide post is set to be the same as the inner diameter of the sleeve.

[0006] If alignment is performed solely using the methods described above, when the deviation between the sizing sleeve and the die is within a certain range, it will result in a large visual deviation, requiring multiple adjustments to ensure proper engagement between the guide post and the sizing sleeve. To avoid this problem, multiple laser emitters are installed on the same side of the limiting frustum and the sleeve. The laser emitters are evenly distributed around the axis of the limiting frustum on the outer side of the sleeve, with the emitting ends of the laser emitters facing the sleeve. When the laser emitted by the laser emitter can reach the sizing sleeve, and when the laser coincides with the reference point on the sizing sleeve, it ensures that the guide post and the sizing sleeve can easily engage.

[0007] To fix the positions of the guide post and the reference seat when aligning the sizing sleeve and the die, a guide groove is provided on the sleeve. The guide groove is opened from the outer end face of the sleeve along the length of the sleeve. A threaded hole is opened on the guide post, making the threaded hole perpendicular to and passing through the axis of the guide post. A guide bolt is installed in the threaded hole. After the guide bolt passes through the guide groove, it is threaded into the threaded hole. When the guide post is inserted into the sleeve, the threaded part of the guide bolt is engaged in the guide groove. The guide post and the reference seat can be fixed by tightening the guide bolt.

[0008] To ensure the accuracy of the guide post and sleeve installation, the thread diameter of the guide bolt is set to be consistent with the width of the guide groove. When the guide post is inserted into the sleeve, the thread of the guide bolt is precisely engaged in the guide groove, allowing the bolt to slide back and forth along the length of the guide groove. At the same time, the head diameter of the guide bolt is larger than the width of the guide groove, ensuring that the guide bolt can firmly fix the guide post in the sleeve.

[0009] To facilitate quick alignment of the positioning cylinder and the die, the outermost end of the positioning cylinder is designed as an inwardly tapered surface. Similarly, to facilitate quick alignment of the guide post and the sizing sleeve, the outermost end of the positioning ring is designed as an inwardly tapered surface.

[0010] Compared with existing technologies, the sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line provided by this utility model can significantly improve the alignment accuracy of the mold and the sizing sleeve during the production process, reduce reliance on manual operation, avoid errors caused by traditional visual alignment methods, effectively reduce the impact of human error on production quality, and ensure more stable and consistent shape and size of the center tube. It can effectively reduce dimensional and appearance defects during production, thereby significantly improving the dimensional and appearance pass rate of products, effectively reducing the scrap rate, reducing resource waste, improving product quality, meeting market demand for high-quality products, and increasing production efficiency. At the same time, it simplifies the operation process, reduces the workload of operators, and improves the operating efficiency of the production line. It significantly shortens the production cycle, improves overall production efficiency, meets the needs of rapid industrial development, and has significant technical and economic benefits. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the combined state structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the reference base;

[0014] Figure 3 This is a schematic diagram of the side sectional view of the reference base;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the guide column;

[0016] Figure 5 This is a schematic diagram of the side sectional view of the guide column;

[0017] Figure 6 This is a side sectional view of the assembled structure of this utility model;

[0018] As shown in the figure: 1-reference base; 2-guide post; 3-sleeve; 4-limiting frustum; 5-positioning cylinder; 6-fixing hole; 7-positioning ring; 8-avoidance pit; 9-laser emitter; 10-guide groove; 11-threaded hole; 12-guide bolt. Detailed Implementation

[0019] To further illustrate the concept of this utility model, the specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0020] A guiding device for installing the sizing sleeve in a reverse osmosis membrane element center tube extrusion production line, such as Figure 1 As shown, the device includes a reference base 1 and a guide post 2. The reference base 1 is manufactured using a cutting process and consists of three parts: a positioning cylinder 5, a sleeve 3, and a limiting frustum 4. The limiting frustum 4 is a disc structure, while the positioning cylinder 5 and sleeve 3 are cylindrical structures. The positioning cylinder 5, the limiting frustum 4, and the sleeve 3 are coaxial. The positioning cylinder 5 and the sleeve 3 are located on opposite sides of the limiting frustum 4. The shape and size of the positioning cylinder 5 are determined according to the die, allowing the positioning cylinder 5 to fit into the die. Then, the outer side of the end of the positioning cylinder 5 is cut into a tapered surface. Four fixing holes 6 are opened on the limiting frustum 4, and the fixing holes 6 are determined according to the position of the bolt holes on the die. A guide groove 10 is cut into the upper side wall of the sleeve 3, cutting from the outer end of the sleeve 3 inwards. Figure 2 , Figure 3 As shown. Based on the reference point position on the sizing sleeve, four laser emitters 9 are installed at corresponding positions on the limiting frustum 4, so that the laser emitters 9 are evenly distributed around the axis of the limiting frustum 4, and the laser emission direction of the laser emitters 9 is towards the sleeve 3, as shown. Figure 6 As shown.

[0021] The guide post 2 is a cylinder with the same diameter as the inner diameter of the sleeve 3. A positioning ring 7 is set at one end of the guide post 2, making the positioning ring 7 coaxial with the guide post 2. The outer and inner diameters of the positioning ring 7 are determined according to the shape of the sizing sleeve, allowing the positioning ring 7 to mate with the sizing sleeve. The hollow part inside the positioning ring 7 forms a clearance pit 8. The outer side of the end of the positioning ring 7 is cut into a tapered surface. A threaded hole 11 is opened on the guide post 2, perpendicularly on the side wall of the guide post 2 and passing through the axis of the guide post 2. The diameter of the threaded hole 11 is the same as the width of the guide groove 10. Figure 4 , Figure 5 As shown, a guide bolt 12 is then installed on the threaded hole 11.

[0022] When installing the sizing sleeve, first fix the reference base 1 onto the die, then use the positioning cylinder 5 to quickly position the reference base 1. Next, use bolts passing through the fixing holes 6 to completely fix the reference base 1 onto the die. Loosen the guide bolts 12 on the guide post 2, and fully insert the guide post 2 into the sleeve 3, so that the guide bolts 12 are engaged in the guide groove 10. Figure 1As shown, the sizing sleeve is then installed on the vacuum cooling box. The laser emitter 9 on the limiting frustum 4 emits four laser beams. The position of the vacuum cooling box is adjusted so that the emitted laser beams correspond one-to-one with the reference points on the sizing sleeve. The distance between the sizing sleeve and the reference base 1 is then adjusted so that the sizing sleeve is close to the reference base 1. The guide post 2 is then moved outward from inside the sleeve 3, bringing the positioning ring 7 on the guide post 2 closer to the sizing sleeve. During this process, the position of the sizing sleeve is finely adjusted until the positioning ring 7 can perfectly fit with the sizing sleeve. The guide bolt 12 is then tightened to fix the position of the guide post 2. The laser emitter 9 is turned off, and the position of the vacuum cooling box is fixed. At this point, the sizing sleeve and the die are concentric and coaxial, completing the installation and positioning of the sizing sleeve and the die. Finally, the guide bolt 12 is loosened, the guide post 2 is pushed into the sleeve 3, and the reference base 1 is removed from the die, thus completing the entire installation process.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made using the present utility model should be included within the protection scope of the present utility model.

Claims

1. A guiding device for installing the sizing sleeve in a reverse osmosis membrane element center tube extrusion production line, characterized in that: The system includes a reference base (1), a guide post (2), and a guide bolt (12). The reference base (1) includes a coaxial sleeve (3), a limiting frustum (4), and a positioning cylinder (5). The limiting frustum (4) is located between the sleeve (3) and the positioning cylinder (5). Multiple fixing holes (6) are provided on the limiting frustum (4). One end of the guide post (2) is provided with a coaxial positioning ring (7), and the other end of the guide post (2) extends into the sleeve (3). An avoidance pit (8) is formed in the middle of the positioning ring (7). The guide post (2) is locked in the sleeve by the guide bolt (12).

2. The sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line according to claim 1, characterized in that: The diameter of the guide post (2) is the same as the inner diameter of the sleeve (3).

3. The sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line according to claim 2, characterized in that: Multiple laser emitters (9) are provided on the limiting truncated cone (4) and located on the same side as the sleeve (3). The laser emitters (9) are evenly distributed on the outside of the sleeve (3) with the axis of the limiting truncated cone (4) as the center. The emitting end of the laser emitter (9) faces the sleeve (3).

4. The sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line according to claim 3, characterized in that: The sleeve (3) is provided with a guide groove (10), which is opened from the outer end face of the sleeve (3) along the length direction of the sleeve (3). A threaded hole (11) is opened on the guide post (2) perpendicular to its axis. The guide bolt (12) passes through the guide groove (10) and is threaded into the threaded hole (11) to lock the guide post (2) in the sleeve (3).

5. The sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line according to claim 4, characterized in that: The thread diameter of the guide bolt (12) is the same as the width of the guide groove (10); when the guide post (2) is inserted into the sleeve (3), the thread of the guide bolt (12) is inserted into the guide groove (10); the screw of the guide bolt (12) can slide back and forth along the length of the guide groove (10), and the head diameter of the guide bolt (12) is greater than the width of the guide groove (10).

6. The sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line according to claim 5, characterized in that: The outermost end of the positioning cylinder (5) is a conical surface that tapers inward.

7. The sizing sleeve installation guide device for the reverse osmosis membrane element center tube extrusion production line according to claim 6, characterized in that: The outermost end of the positioning ring (7) is an inwardly contracting conical surface.

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