A hollow fiber ultrafiltration membrane shell spin melting equipment and process

Abstract

This invention discloses a hollow fiber ultrafiltration membrane shell spin-fusion device and process, belonging to the field of polymer material processing technology. It includes a mounting shell, a door, a working platform, sliding components, a pushing component, a limiting component, a spin-fusion component, and tracks. The working platform has several support legs at its bottom and a control device inside. The mounting shell is installed above one end of the working platform. Two sliding components are installed, one at the top and one on the side of the working platform. The door is drivenly connected to one of the sliding components and is located outside the sliding component. The pushing component is drivenly connected to the other sliding component. Tracks are arranged in pairs and installed on the top of the working platform, with spin-fusion components drivenly connected to them. The limiting component is also installed on the top of the working platform. This invention solves the problem of easy breakage and separation at the weld point due to poor membrane shell welding methods in existing technologies. It significantly improves the yield while ensuring the connection effect of components.

Description

Technical Field

[0001] This invention relates to the field of polymer material processing technology, specifically to a hollow fiber ultrafiltration membrane shell spin melting equipment and process. Background Technology

[0002] During the processing of hollow fiber ultrafiltration membrane shells, it is necessary to connect the aeration disc, casting disc and tube body after the mold is formed to form a hollow fiber ultrafiltration membrane shell.

[0003] Existing hollow fiber ultrafiltration membrane housings are generally divided into metal and plastic. While metal membrane housings are reusable, they are expensive and require cleaning after a period of use to prevent clogging. Although the components of metal membrane housings are welded together for a tighter connection, they cannot be properly cleaned without disassembling the housing, leading to clogging. However, separating the entire structure is also difficult. To solve the problems of metal membrane housings, plastic membrane housings were designed because they are inexpensive. This eliminates the need for cleaning and allows for direct replacement when clogging occurs, ensuring continuous production. However, most existing plastic membrane housings are assembled using welding. While traditional welding can achieve the connection, improper temperature control can lead to separation or severe deformation at the connection point, affecting the use of the membrane housing and increasing production costs.

[0004] Therefore, how to provide a hollow fiber ultrafiltration membrane shell spin melting equipment and process to solve the defects in the assembly of existing hollow fiber ultrafiltration membrane shells is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] Therefore, the present invention provides a hollow fiber ultrafiltration membrane shell spin welding device and process to solve the problem that the welded position is prone to breakage and separation due to poor membrane shell welding method in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention discloses a hollow fiber ultrafiltration membrane shell spin-fusion device, comprising:

[0008] The work platform has several legs at the bottom, and a control device is placed inside the work platform.

[0009] The housing is installed above one end of the work platform;

[0010] Two sliding components are provided, one mounted on the upper end and the other on the side of the working platform;

[0011] The door body is drivenly connected to one of the sliding components, and the door body is disposed on the outside of the sliding component;

[0012] A propulsion component is drivenly connected to another of the sliding components;

[0013] Tracks, arranged in pairs, are installed on the top of the work platform. Spin welding assemblies are drivenly connected to the tracks, and the spin welding assemblies move within the mounting housing.

[0014] A limiting component is installed on the top of the working platform, the limiting component is located to the left of the spinning assembly, and the propulsion assembly is located to the left of the limiting component.

[0015] In one possible implementation, an adjustment component is also installed on the working platform, the adjustment component being disposed between the spin-melting component and the limiting component;

[0016] The adjustment components include:

[0017] A mounting plate is installed on the upper part of the work platform, and an adjustment cylinder is installed at the bottom of the mounting plate. The adjustment cylinder is located inside the work platform.

[0018] The movable rods are arranged in pairs, with their bottom ends connected to the adjusting cylinder. The top of each movable rod extends out of the mounting plate and is fitted with an adjusting block at its end.

[0019] In one possible implementation, the sliding component includes:

[0020] A placement plate is installed on the upper part of the work platform. The placement plate is equipped with displacement slides, which are arranged in pairs. The door or push assembly is drivenly connected to the displacement slides.

[0021] L-shaped blocks are arranged in pairs, with one end mounted on the placement plate and a detection probe mounted on the other end of the L-shaped block;

[0022] The fixing bolt has its bottom end inserted into the round hole on the side of the placement plate and extends into the working platform. The bottom of the fixing bolt is provided with a locking block.

[0023] In one possible implementation, the propulsion component includes:

[0024] The connecting frame has several displacement sliders installed at the bottom, and the displacement sliders are drivenly connected to the displacement slide rail.

[0025] A circular chassis is installed on the side of the connecting frame, and a limit ring is screwed into the circular chassis;

[0026] Several clamping blocks are installed on the side wall of the limiting ring, and an installation space is formed between the limiting ring and the inner wall of the circular chassis.

[0027] In one possible implementation, the limiting component includes:

[0028] A lower connecting frame is installed on the top of the work platform, and a first tube placement component is installed in the lower connecting frame;

[0029] An upper connecting frame is installed on the upper end of the lower connecting frame, and connectors are slidably connected to both ends of the bottom of the upper connecting frame;

[0030] The second tube placement component is installed between the two connecting components;

[0031] Limiting cylinders are installed in pairs on the top of the upper connecting frame. The piston rod at the bottom output end of the limiting cylinder passes through the top plate of the upper connecting frame, and the bottom of the piston rod is connected to the connecting piece.

[0032] The connecting rods are arranged in pairs, with their top ends passing through the top plate of the lower connecting frame and connecting to the bottom of the connector. Limiting blocks are connected to the bottom of the two connecting rods.

[0033] In one possible implementation, the spin-melting assembly includes:

[0034] The mounting bracket has several translation sliders installed at the bottom, and the translation sliders are drivenly connected to the track.

[0035] A rotary motor is mounted on the upper end of the mounting bracket. A rotating rod is rotatably connected to the output end of the rotary motor, and a connector is connected to one end of the rotating rod.

[0036] A displacement cylinder is installed on the working platform. The displacement cylinder is located on the outside of the mounting frame. A drive rod is connected to the displacement cylinder, and one end of the drive rod is connected to the mounting frame.

[0037] Limiting components are installed in pairs on the working platform, with the limiting components positioned between the two tracks and on both sides of the mounting frame.

[0038] A hollow fiber ultrafiltration membrane shell spin-fusion process includes a hollow fiber ultrafiltration membrane shell spin-fusion device and further includes the following steps:

[0039] S1: Place the pipe body to be welded in the limiting assembly, and install the casting plate or aeration plate on the spin welding assembly;

[0040] S2: By pushing the propulsion component to move on the sliding component, the propulsion component is brought closer to and the pipe body is driven to move, so that the pipe body is brought closer to the pouring plate or aeration plate, and then the position of the pipe body is fixed by the limiting component.

[0041] S3: The spin-melting assembly moves along the track, bringing the casting pan or aeration pan closer to the pipe body, and inserting one end of the pipe body into the casting pan or aeration pan. During the insertion process, the insertion amount of the pipe body end into the casting pan or aeration pan is determined.

[0042] S4: After being connected together, the spin-melting assembly drives the casting plate or aeration plate to rotate. The rotation speed causes friction between the casting plate or aeration plate and the pipe body. The heat generated by the friction causes the plastic on the contact surface between the casting plate or aeration plate and the pipe body to melt. The casting plate or aeration plate stops rotating. Under natural cooling, the melted liquid plastic quickly condenses, connecting the casting plate or aeration plate to the pipe body.

[0043] S5: Cancel the limiting components and spin-melting components, and remove the finished product.

[0044] In one possible implementation, the insertion depth of the pipe end into the casting pan or aeration pan in step S3 is in the range of 80mm-100mm.

[0045] In one possible implementation, the spin melting process in step S4 specifically includes the following steps:

[0046] S401: When spin melting begins, the rotation speed of the spin melting component is set to 90 r / s, and the temperature range generated by the friction between the casting plate or aeration plate and the pipe body is between 90℃ and 110℃. At this time, the plastic on the contact surface has not melted.

[0047] S402: Increase the rotation speed of the spin-melting assembly to 100 r / s. The temperature range generated by the friction between the casting plate or aeration plate and the pipe body is 110℃-140℃. At this time, the plastic at the contact point will undergo slight deformation.

[0048] S403: Finally, the rotation speed of the spin-melting assembly is increased to 110 r / s. The temperature range generated by the friction between the casting plate or aeration plate and the pipe body is 140℃-170℃. At this time, the plastic melting temperature is reached, and the plastic at the melting point melts.

[0049] S404: When the spin-melting assembly is turned off, the friction between the casting tray or aeration tray and the pipe body disappears. Under natural cooling, the contact surface temperature drops below 164°C, and the plastic solidifies, thus connecting the casting tray or aeration tray to the pipe body.

[0050] In one possible implementation, during the spin melting process in step S4, the number of rotations of the casting disc or aeration disc ranges from 5 to 15.

[0051] This invention places the tube body in a limiting component, and then, while the driving propulsion component moves on the sliding component, it drives the tube body closer to the spin-melting component. The limiting component fixes the tube body, and then the casting tray or aeration tray is fixed on the spin-melting component. The spin-melting component is moved by a track, allowing the tube body to be inserted into the casting tray or aeration tray during the movement. Then, the rotational characteristics of the spin-melting component cause the casting tray or aeration tray to rotate, generating friction at the contact point with the tube body. The friction generates heat, melting the plastic at the contact point. After rotation stops, the plastic cools rapidly at room temperature. However, this welding method, which completes the connection, has a larger contact area and a wider welding area compared to existing welding methods. This is because existing welding methods suffer from uneven heating. The connection effect is more stable than existing welding methods. Moreover, the rotary welding method does not directly supply heat. As long as the rotation stops and there is no friction, it can cool down quickly. This can effectively prevent the problem of residual heat from existing heating equipment causing the weld position to not solidify and excessive debris. In addition, the heat generated by friction will not cause the plastic to deform severely, resulting in a higher yield of finished film shells and a better connection effect. Attached Figure Description

[0052] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0053] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0054] Figure 1 A perspective view of the hollow fiber ultrafiltration membrane shell spin melting device provided by the present invention;

[0055] Figure 2 A perspective view of the adjustment component provided by the present invention;

[0056] Figure 3 Provided by the present invention Figure 2Enlarged view of a portion of point A in the middle;

[0057] Figure 4 A perspective view of the sliding component and the propulsion component provided by the present invention;

[0058] Figure 5 A perspective view of the propulsion component provided by the present invention;

[0059] Figure 6 A perspective view of the limiting component provided by the present invention;

[0060] Figure 7 A perspective view of the spin-welding assembly provided by the present invention;

[0061] Figure 8 The process flow diagram of the spin melting process for hollow fiber ultrafiltration membrane shells provided by this invention;

[0062] Figure 9 The flow chart of the spin melting process in step S4 of this invention

[0063] In the diagram: 1. Housing; 2. Door; 3. Working platform; 4. Sliding assembly; 41. L-shaped block; 42. Displacement slide; 43. Locking block; 44. Fixing bolt; 45. Placement plate; 5. Push assembly; 51. Displacement slider; 52. Connecting frame; 53. Circular chassis; 54. Pressing block; 55. Limiting ring; 6. Limiting assembly; 61. Limiting block; 62. Connecting rod; 63. Connector; 64. Lower connecting frame; 65. First tube placement component; 66. Second tube placement component; 67. Upper connecting frame; 68. Limiting cylinder; 7. Spin welding assembly; 71. Displacement cylinder; 72. Drive rod; 73. Limiting component; 74. Translation slider; 75. Mounting bracket; 76. Connector; 77. Rotating rod; 78. Rotary motor; 8. Track; 9. Adjustment assembly; 91. Adjustment cylinder; 92. Mounting plate; 93. Movable rod; 94. Adjustment block. Detailed Implementation

[0064] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0065] Please refer to Figures 1-7 The present invention will now describe a hollow fiber ultrafiltration membrane shell spin-fusion device, as disclosed in this invention. Figure 1The system includes a mounting shell 1, a door 2, a working platform 3, a sliding assembly 4, a pushing assembly 5, a limiting assembly 6, a spinning assembly 7, and tracks 8. The working platform 3 has several support legs at its bottom and a control device inside. The mounting shell 1 is installed above one end of the working platform 3. There are two sliding assemblies 4, one installed at the top and the other at the side of the working platform 3. The door 2 is driven to one of the sliding assemblies 4 and is located outside the sliding assembly 4. The pushing assembly 5 is driven to the other sliding assembly 4. Tracks 8 are installed in pairs at the top of the working platform 3. The spinning assembly 7 is driven to the track 8 and moves within the mounting shell 1. The limiting assembly 6 is installed at the top of the working platform 3 and is located to the left of the spinning assembly 7. The pushing assembly 5 is located to the left of the limiting assembly 6. The work platform 3 is equipped with various control devices, including air pumps, microcontrollers and other unit modules. The microcontroller controls the amount of gas pumped in and the rotation speed of the welding assembly 7 to ensure precise control of the insertion amount and welding effect. By utilizing the displacement of the door 2 on the sliding assembly 4, the door 2 is blocked before the processing position during the welding process to prevent impurities from splashing and injuring workers during welding. The outer shell 1 is installed for dust prevention.

[0066] In a specific embodiment, such as Figures 2-3 An adjustment assembly 9 is also installed on the working platform 3. The adjustment assembly 9 is located between the spinning assembly 7 and the limiting assembly 6. The adjustment assembly 9 includes an adjustment cylinder 91, a mounting plate 92, a movable rod 93, and an adjustment block 94. The mounting plate 92 is installed on the upper end of the working platform 3, and the driving adjustment cylinder 91 is installed at the bottom of the mounting plate 92. The adjustment cylinder 91 is located inside the working platform 3. The movable rods 93 are arranged in pairs, and their bottom ends are connected to the adjustment cylinders 91. The top of the movable rods 93 protrudes from the mounting plate 92, and the adjustment block 94 is installed at the end. The adjustment cylinder 91 drives the movable rods 93 to extend. The movement of the movable rods 93 causes the adjustment block 94 to abut against the side wall of the tube. In this way, when the tube is driven to move horizontally, it can be ensured that the tube moves horizontally. Moreover, this can also prevent the limiting assembly 6 from crushing the tube when it limits the tube.

[0067] In a specific embodiment, such as Figure 4The sliding assembly 4 includes an L-shaped block 41, a displacement slide rail 42, a locking block 43, a fixing bolt 44, and a placement plate 45. The placement plate 45 is installed on the upper end of the work platform 3. The displacement slide rail 42 is installed on the placement plate 45 in pairs. The door body 2 or the push assembly 5 is drivenly connected to the displacement slide rail 42. The L-shaped blocks 41 are installed in pairs, with one end installed on the placement plate 45 and the other end of the L-shaped block 41 having a detection probe installed. The bottom end of the fixing bolt 44 is inserted into the round hole on the side of the placement plate 45 and extends into the work platform 3. The bottom of the fixing bolt 44 has a locking block 43. The fixing bolt 44 is used to fix the placement plate 45 to the side wall of the work platform 3. The L-shaped block 41 is used to install the detection probe to detect the sliding distance of the device moving through the displacement slide rail 42, and can also effectively limit the sliding of the device to prevent slippage. The locking block 43 is used to limit the movement of the fixing bolt 44.

[0068] In a specific embodiment, such as Figure 5 The propulsion assembly 5 includes a displacement slider 51, a connecting frame 52, a circular base 53, clamping blocks 54, and a limiting ring 55. Several displacement sliders 51 are mounted on the bottom of the connecting frame 52, and the displacement sliders 51 are drively connected to the displacement slide rail 42. The circular base 53 is mounted on the side of the connecting frame 52, and a limiting ring 55 is screwed into the circular base 53. Several clamping blocks 54 are mounted on the side wall of the limiting ring 55, forming an installation space between the limiting ring 55 and the inner wall of the circular base 53. The sliding of the displacement sliders 51 in the displacement slide rail 42 drives the connecting frame 52 to translate, thereby driving the tube body to move. The clamping blocks 54 are designed to better confine the tube body within the installation space.

[0069] In a specific embodiment, such as Figure 6The limiting component 6 includes a limiting block 61, a connecting rod 62, a connector 63, a lower connecting frame 64, a first tube placement component 65, a second tube placement component 66, an upper connecting frame 67, and a limiting cylinder 68. The lower connecting frame 64 is installed at the top of the working platform 3, and the first tube placement component 65 is installed in the lower connecting frame 64. The upper connecting frame 67 is installed at the upper end of the lower connecting frame 64, and the connector 63 is slidably connected to both ends of the bottom of the upper connecting frame 67. The second tube placement component 66 is installed between the two connectors 63. The limiting cylinders 68 are arranged in pairs and installed at the top of the upper connecting frame 67. The piston rod at the bottom output end of the limiting cylinder 68 passes through the top plate of the upper connecting frame 67, and the bottom of the piston rod is connected to the connector 63. The connecting rods 62 are arranged in pairs, and their top ends pass through the top plate of the lower connecting frame 64 and are connected to the bottom of the connector 63. The bottom of the two connecting rods 62 is connected to the limiting block 61. The first tube placement piece 65 and the second tube placement piece 66 can restrict the tube between them to prevent the tube from moving or rotating. The connecting rod 62 and the limiting block 61 are set to limit the upward movement distance of the connecting piece 63 and prevent displacement. The lower connecting frame 64 and the upper connecting frame 67 are used to connect the first tube placement piece 65 and the second tube placement piece 66, respectively.

[0070] In a specific embodiment, such as Figure 7 The spin-melting assembly 7 includes a displacement cylinder 71, a drive rod 72, a limiting member 73, a translation slider 74, a mounting frame 75, a connector 76, a rotating rod 77, and a rotary motor 78. Several translation sliders 74 are mounted on the bottom of the mounting frame 75 and are driven to the track 8. The rotary motor 78 is mounted on the upper end of the mounting frame 75, and the output end of the rotary motor 78 is rotatably connected to the rotating rod 77. One end of the rotating rod 77 is connected to the connector 76. The displacement cylinder 71 is mounted on the working platform 3 and is located on the outside of the mounting frame 75. The displacement cylinder 71 is driven to the drive rod 72, and one end of the drive rod 72 is connected to the mounting frame 75. The limiting members 73 are arranged in pairs and mounted on the working platform 3. The limiting members 73 are located between two tracks 8 and on both sides of the mounting frame 75. The displacement cylinder 71 drives the drive rod 72 to move the mounting bracket 75. The displacement of the mounting bracket 75 can carry the rotary motor 78 and the connector 76 carried by the rotary motor 78 to translate, so that the pouring plate or aeration plate on the connector 76 approaches and is fitted onto the outside of the pipe body. The translation slider 74 is set to cooperate with the track 8, while the limiting member 73 is set to restrict the movement of the mounting bracket 75 and prevent the mounting bracket 75 from slipping off the track 8. The rotary motor 78 drives the rotating rod 77 to make the connector 76 carry the pouring plate or aeration plate to rotate.

[0071] In use, the hollow fiber ultrafiltration membrane shell is placed on the first tube placement piece 65, and one end of the tube is aligned with the installation space. At this time, the adjusting cylinder 91 drives the movable rod 93 to extend, and the adjusting block 94 abuts against the side wall of the other end of the tube. The connecting frame 52 is then driven, and the sliding block 51 at its bottom moves along the displacement slide 42. During the movement of the connecting frame 52, the limiting ring 55 is simultaneously driven to move, thus pushing the tube connected to the installation space to move horizontally. Under the action of the adjusting block 94, the tube is prevented from tilting during the displacement. During the movement of the tube, the other end of the tube will approach the spin-melting assembly 7, so that after the spin-melting assembly 7 is displaced, it can carry the casting plate or aeration plate and fit over the end of the tube. Then, the limiting cylinder 68 drives the connecting piece 63 to move, so that the second tube placement piece 66 carried by the two connecting pieces 63 moves down and presses on the tube, cooperating with the first tube placement piece 65 to restrict the position of the tube.

[0072] A casting plate or aeration plate is installed on the spin-melting assembly 7. Then, the displacement cylinder 71 drives the drive rod 72 to translate, causing the drive rod 72 to push the mounting frame 75 to translate. During the translation of the mounting frame 75, the rotary motor 78 on the mounting frame 75 carries the casting plate or aeration plate connected to the connector 76 to translate, so that the end of the pipe is inserted into the casting plate or aeration plate during the movement. After insertion, the rotary motor 78 starts, causing the rotary rod 77 to rotate. The rotary rod 77 causes the connector 76 to rotate with the casting plate or aeration plate. At this time, since the outer wall of one end of the pipe is in contact with the inner wall of the casting plate or aeration plate, the plastic at the contact position melts due to the friction generated by the contact surface during the rotation of the casting plate or aeration plate. Moreover, the melted plastic flows with the rotation of the casting plate or aeration plate, so that the melted plastic is evenly distributed on the ring of the contact surface. In this way, during cooling and welding, all contact positions will be connected together.

[0073] Compared to existing welding methods, this connection method offers several advantages. First, heating is more convenient, eliminating the need for circular heating. Existing welding methods only heat the outer side of the connection point, making it difficult for heat to reach the contact area. This can result in severe deformation on the outside while the internal plastic remains unmelted. This technology directly heats the contact area, avoiding these problems. Furthermore, compared to existing welding methods, this friction-based heating not only melts the contact area but also ensures more even heating, preventing situations where one area melts and deforms while others remain unmelted.

[0074] After the welding is completed, the limiting components 76 and 6 are removed from the casting plate or aeration plate and the pipe body. After the welded part is removed, it is rotated 180° and then installed back into the limiting component 6. The casting plate or aeration plate is then installed on the casting plate or aeration plate again. Then, the casting plate or aeration plate is installed on the other end of the pipe body using the above operation. After the assembly is completed, a hollow fiber ultrafiltration membrane shell is formed.

[0075] Based on the same inventive concept, such as Figure 8 As shown, the present invention also discloses a hollow fiber ultrafiltration membrane shell spin-fusion process, comprising the following steps:

[0076] S1: Place the pipe body to be welded in the limiting component 6, and install the casting plate or aeration plate on the spin welding component 7;

[0077] S2: By pushing the propulsion component 5 to move on the sliding component 4, the propulsion component 5 is brought closer to and the pipe body is driven to move, so that the pipe body is close to the pouring plate or aeration plate, and then the position of the pipe body is fixed by the limiting component 6.

[0078] S3: The spin-melting assembly 7 moves along the track 8, bringing the casting plate or aeration plate closer to the pipe body, and inserting one end of the pipe body into the casting plate or aeration plate. During the insertion process, the insertion amount of the pipe body end into the casting plate or aeration plate is determined.

[0079] S4: After being connected together, the spin-melting component 7 drives the casting plate or aeration plate to rotate. The rotation speed causes friction between the casting plate or aeration plate and the pipe body. The heat generated by the friction causes the plastic on the contact surface between the casting plate or aeration plate and the pipe body to melt. The casting plate or aeration plate stops rotating. Under natural cooling, the melted liquid plastic quickly condenses, allowing the casting plate or aeration plate to connect with the pipe body.

[0080] S5: Remove the limiting components 6 and 7 from the limit and remove the finished product.

[0081] The limiting component 6 is a clamping installation for the tube body, which further prevents the tube body from rotating and translating. The movement of the pushing component 5 on the sliding component 4 can be controlled by hand or by a cylinder. Since driving the tube body to move only requires bringing one end of the tube body close to the casting plate or aeration plate, it is not necessary to precisely control the amount of movement. Therefore, if fully automatic processing is required, the displacement of the pushing component 5 is controlled by a cylinder; otherwise, manual pushing is sufficient. The determination of the insertion amount is to determine the length of the entire hollow fiber ultrafiltration membrane shell after molding, as well as the stability of the connection between the casting plate or aeration plate and the tube body, according to the needs of different customers.

[0082] In a specific embodiment, the insertion depth of the pipe end into the casting pan or aeration pan in step S3 ranges from 80mm to 100mm. The insertion depth is determined according to the pipe width customized by the customer. The wider the pipe diameter, the greater the insertion depth is required to ensure a stable connection. A movable second pipe placement piece 66 is used in conjunction with a fixed first pipe placement piece 65 to clamp pipes of larger diameters. For example, if the pipe diameter is too large, the first pipe placement piece 65 and the second pipe placement piece 66 will be stuck on the side wall of the pipe and will not completely cover the outer wall of the pipe, but the pipe can still be limited.

[0083] In a specific embodiment, such as Figure 9 The spin melting process in step S4 specifically includes the following steps:

[0084] S401: When spin melting begins, the rotation speed of spin melting component 7 is set to 90 r / s. The temperature range generated by friction between the casting plate or aeration plate and the pipe body is between 90℃ and 110℃. At this time, the plastic on the contact surface has not melted.

[0085] S402: Increase the rotation speed of the spin-melting component 7 to 100 r / s. The temperature range generated by the friction between the casting plate or aeration plate and the pipe body is 110℃-140℃. At this time, the plastic at the contact point will undergo slight deformation.

[0086] S403: Finally, the rotation speed of the spin-melting component 7 is increased to 110 r / s. The temperature range generated by the friction between the casting plate or aeration plate and the pipe body is 140℃-170℃. At this time, the plastic melting temperature is reached, and the plastic at the melting point melts.

[0087] S404: When the spin-melting assembly 7 is closed, the friction between the casting tray or aeration tray and the pipe body disappears. Under natural cooling, the contact surface temperature drops below 164°C, and the plastic solidifies, causing the casting tray or aeration tray to connect with the pipe body.

[0088] During the welding process, it is best to use a staged heating method. Since this is a spin-welding process, if the rotational force is too high from the start, it will generate a large instantaneous stress. Furthermore, the temperature doesn't rise instantly due to friction. If this instantaneous stress exceeds the stress the tube can withstand, it can lead to tube breakage or severe deformation. Frictional heating is a slow process; therefore, it's best to start with a low rotation speed to gradually increase the temperature, then slowly increase the speed until the tube at the joint deforms slightly, facilitating a smoother connection. Finally, raise the temperature to the melting point in one go, allowing the plastic at the contact point to melt quickly. Then stop rotating and allow it to cool rapidly at room temperature to complete the weld. Using a high rotation speed from the start takes time to reach the melting point, requiring more rotations and resulting in more debris. Therefore, gradually increasing the rotation speed is the preferred method.

[0089] In a specific embodiment, during the spin-melting process in step S4, the number of rotations of the casting disc or aeration disc ranges from 5 to 15. The number of rotations depends on the pipe diameter. The larger the pipe diameter, the greater the contact area, resulting in more friction, more heat, and a faster welding speed, thus requiring fewer rotations.

[0090] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A hollow fiber ultrafiltration membrane shell spinmelting apparatus, characterized by, include: The work platform (3) has several legs at the bottom and a control device is placed inside the work platform (3); The housing (1) is installed above one end of the work platform (3); Two sliding components (4) are provided, which are respectively installed on the upper end and the side of the working platform (3); The door body (2) is connected to one of the sliding components (4) and the door body (2) is disposed on the outside of the sliding component (4); The propulsion component (5) is drivenly connected to another sliding component (4); Tracks (8), arranged in pairs, are installed on the top of the work platform (3). A spin-welding assembly (7) is driven on the track (8), and the spin-welding assembly (7) moves within the mounting housing (1). A limiting component (6) is installed on the top of the working platform (3). The limiting component (6) is located on the left side of the spin-melting component (7). The pushing component (5) is located on the left side of the limiting component (6). The limiting component (6) includes: The lower connecting frame (64) is installed on the top of the working platform (3), and the first tube placement component (65) is installed in the lower connecting frame (64). The upper connecting frame (67) is installed on the upper end of the lower connecting frame (64), and the two ends of the bottom of the upper connecting frame (67) are slidably connected with connectors (63). The second tube placement component (66) is installed between the two connectors (63); Limiting cylinders (68) are arranged in pairs and installed on the top of the upper connecting frame (67). The piston rod of the bottom output end of the limiting cylinder (68) passes through the top plate of the upper connecting frame (67), and the bottom of the piston rod is connected to the connector (63). The connecting rods (62) are arranged in pairs, with their top ends passing through the top plate of the lower connecting frame (64) and connected to the bottom of the connector (63). The bottoms of the two connecting rods (62) are connected to limit blocks (61). The spin-welding assembly (7) includes: Mounting bracket (75), with several translation sliders (74) mounted on the bottom, the translation sliders (74) being drivenly connected to the track (8); A rotary motor (78) is mounted on the upper end of the mounting bracket (75). A rotating rod (77) is rotatably connected to the output end of the rotary motor (78). A connector (76) is connected to one end of the rotating rod (77). A displacement cylinder (71) is installed on the working platform (3). The displacement cylinder (71) is located outside the mounting frame (75). A drive rod (72) is connected to the displacement cylinder (71). One end of the drive rod (72) is connected to the mounting frame (75). Limiting members (73) are installed in pairs on the working platform (3). The limiting members (73) are located between the two tracks (8) and on both sides of the mounting frame (75).

2. The hollow fiber ultrafiltration membrane shell spinmelting apparatus according to claim 1, wherein An adjustment component (9) is also installed on the working platform (3), and the adjustment component (9) is located between the spin-melting component (7) and the limiting component (6); The adjustment component (9) includes: Mounting plate (92) is installed on the upper end of the working platform (3). An adjusting cylinder (91) is installed at the bottom of the mounting plate (92). The adjusting cylinder (91) is located inside the working platform (3). The movable rods (93) are arranged in pairs, with their bottom ends connected to the adjusting cylinder (91). The top of the movable rods (93) extends out of the mounting plate (92) and an adjusting block (94) is installed at the end.

3. The hollow fiber ultrafiltration membrane shell spinmelting apparatus according to claim 1, wherein The sliding component (4) includes: A placement plate (45) is installed on the upper end of the work platform (3). A displacement slide (42) is installed on the placement plate (45). The displacement slides (42) are arranged in pairs. The door body (2) or the push assembly (5) is connected to the displacement slide (42) in a driving connection. L-shaped blocks (41) are arranged in pairs, with one end mounted on the placement plate (45) and a detection probe mounted on the other end of the L-shaped blocks (41); The bottom end of the fixing bolt (44) is inserted into the round hole on the side of the placement plate (45) and extends into the working platform (3). The bottom of the fixing bolt (44) is provided with a locking block (43).

4. The hollow fiber ultrafiltration membrane shell spinmelting apparatus according to claim 3, characterized by, The propulsion component (5) includes: The connecting frame (52) has several displacement sliders (51) installed at the bottom, and the displacement sliders (51) are connected to the displacement slide (42) in a driving manner; A circular chassis (53) is installed on the side of the connecting frame (52), and a limiting ring (55) is screwed into the circular chassis (53). Several clamping blocks (54) are installed on the side wall of the limiting ring (55), and the limiting ring (55) and the inner wall of the circular chassis (53) form an installation space.

5. A hollow fiber ultrafiltration membrane shell spin-fusion process, comprising the hollow fiber ultrafiltration membrane shell spin-fusion equipment of claim 1, characterized in that, It also includes the following steps: S1: Place the pipe body to be welded in the limiting component (6) and install the casting plate or aeration plate on the spin welding component (7); S2: By pushing the push assembly (5) to move on the sliding assembly (4), the push assembly (5) moves closer to and drives the pipe body to move, so that the pipe body moves closer to the pouring plate or aeration plate, and then the position of the pipe body is fixed by the limiting assembly (6). S3: The spin-melting assembly (7) moves along the track (8) to bring the casting plate or aeration plate close to the pipe body and insert one end of the pipe body into the casting plate or aeration plate. During the insertion process, the insertion amount of the pipe body end into the casting plate or aeration plate is determined. S4: After being connected together, the spin-melting assembly (7) drives the casting plate or aeration plate to rotate. The rotation speed causes friction between the casting plate or aeration plate and the pipe body. The heat generated by the friction causes the plastic on the contact surface between the casting plate or aeration plate and the pipe body to melt. The casting plate or aeration plate stops rotating. Under natural cooling, the melted liquid plastic quickly condenses, connecting the casting plate or aeration plate to the pipe body. S5: Cancel the limiting components (6) and spin-melting components (7) and remove the finished product.

6. The hollow fiber ultrafiltration membrane shell spin-fusion process as described in claim 5, characterized in that, In step S3, the insertion depth of the pipe end into the casting pan or aeration pan is in the range of 80mm-100mm.

7. The hollow fiber ultrafiltration membrane shell spin-fusion process as described in claim 5, characterized in that, The spin melting process in step S4 specifically includes the following steps: S401: When spin melting begins, the rotation speed of the spin melting component (7) is set to 90 r / s, and the temperature range generated by the friction between the casting plate or aeration plate and the pipe body is between 90℃ and 110℃. At this time, the plastic on the contact surface has not melted. S402: Increase the rotation speed of the spin-melting assembly (7) to 100 r / s. The temperature range generated by the friction between the casting plate or aeration plate and the pipe body is 110℃-140℃. At this time, the plastic at the contact position will be slightly deformed. S403: Finally, the rotation speed of the spin-melting assembly (7) is increased to 110 r / s. The temperature range generated by the friction between the casting plate or aeration plate and the pipe body is 140℃-170℃. At this time, the plastic melting temperature is reached, and the plastic at the melting point melts. S404: When the spin-melting assembly (7) is turned off, the friction between the casting plate or aeration plate and the pipe body disappears. Under natural cooling, the contact surface temperature drops to below 164°C, and the plastic solidifies, so that the casting plate or aeration plate is connected to the pipe body.

8. The hollow fiber ultrafiltration membrane shell spin-fusion process as described in claim 5, characterized in that, During the spin melting process in step S4, the number of rotations of the casting plate or aeration plate ranges from 5 to 15.

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