Ultrafiltration membrane stretching device

Abstract

The utility model discloses an ultrafiltration membrane stretching device which comprises a stable base, a heating box is fixedly arranged at the left end of the top face of the stable base, a refrigerating box symmetrical to the heating box is arranged on the top face of the stable base, the top end of the heating box and the top end of the refrigerating box are jointly connected with a workbench, and a stretching frame is fixedly arranged on the top face of the workbench. A set of moving plates are arranged in the stretching frame in a bilateral symmetry and sliding mode, an air cavity communicating with the heating box and the refrigerating box is formed in the workbench, and an air expansion net plate communicating with the air cavity is arranged in the stretching frame. Compared with the prior art, the ultra-filtration membrane stretching device has the advantages that by arranging the heating box and the refrigerating box, hot air can be generated in the stretching process and is uniformly diffused into the stretching frame through the air diffusion screen plate at the top end of the air cavity, the required temperature is provided for stretching work of an ultra-filtration membrane, and after stretching is completed, the heating box stops working, so that the working efficiency is improved. The refrigeration box rapidly refrigerates to cool and mold the ultrafiltration membrane, so that the quality of finished products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrafiltration membranes, in particular to an ultrafiltration membrane stretching device. Background Art

[0002] Ultrafiltration membrane refers to an artificial permeable membrane used in the ultrafiltration process. It is generally made of polymer materials such as cellulose acetate, cellulose acetate ester, polyethylene, polysulfone and polyamide. Ultrafiltration membrane stretching is a method of stretching and deforming the membrane using the thermal effect. In actual operation, the ultrafiltration membrane is first placed on a stretching platform and fixed with a clamp. Then, the membrane is stretched by heating and applying tension, and after reaching a certain deformation amount, it is cooled and shaped to form a new ultrafiltration membrane. During the stretching process, the ultrafiltration membrane will be deformed by external force, and the molecular chains in the membrane will also be rearranged and oriented under the action of force, thereby improving the membrane performance. In addition, through different stretching speeds and ratios, the performance indicators of the membrane such as pore size, porosity, and permeation flux can be controlled to meet the needs of different fields.

[0003] The existing ultrafiltration membrane stretching device includes a fixed block and a moving block. The ultrafiltration membrane is fixed on the fixed block, and the stretching operation is achieved by moving the moving block left and right to obtain the required ultrafiltration membrane.

[0004] However, the stretching process of the ultrafiltration membrane requires certain temperature conditions to ensure the temperature of the membrane during stretching to prevent the ultrafiltration membrane from cooling and shaping due to low temperature, which will affect the smooth progress of the stretching work. In addition, it needs to be cooled quickly after stretching. Therefore, a temperature-controlled ultrafiltration membrane stretching device is needed. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the temperature of the ultrafiltration membrane stretching process is uncertain, and cooling conditions are likely to occur, which affects the smooth progress of the stretching work. An ultrafiltration membrane stretching device with temperature control is provided.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: an ultrafiltration membrane stretching device, comprising a stable base, a heating box is fixedly arranged at the left end of the top surface of the stable base, a refrigeration box symmetrical to the heating box is arranged on the top surface of the stable base, a workbench is connected to the top of the heating box and the refrigeration box, a stretching frame is fixedly arranged on the top surface of the workbench, a group of movable plates are symmetrically slidably arranged in the stretching frame, the movable plates are slidably connected to the front and rear inner walls of the stretching frame, a bidirectional threaded rod which is threadedly connected to the bottom end of the movable plate is rotatably arranged between the inner walls on the left and right sides of the stretching frame, a fixing groove is arranged on one side of the movable plates which are close to each other, a pull rod extending into the fixing groove is slidably arranged on the top of the movable plate, a fastening plate located in the fixing groove is connected to the bottom end of the pull rod, a plurality of return springs fixedly connected to the top surface of the fastening plate are evenly arranged on the inner wall of the top of the fixing groove, a heater is arranged in the heating box, a refrigerator is arranged in the refrigeration box, an air cavity connected to the heating box and the refrigeration box is arranged in the workbench, and an air expansion mesh plate connected to the air cavity is arranged in the stretching frame.

[0007] As an improvement, a rotating motor for driving the bidirectional threaded rod is fixedly provided on the right outer wall of the stretching frame. The rotating motor conveniently drives the bidirectional threaded rod to rotate, thereby completing the stretching work of the ultrafiltration membrane fixed between the moving plates.

[0008] As an improvement, the top end of the pull rod is connected to a pull plate that is in close contact with the top surface of the movable plate. The setting of the pull plate facilitates the operator to pull the pull rod to cooperate with the fixing operation of the ultrafiltration membrane.

[0009] As an improvement, the rear side walls of the heating box and the refrigeration box are connected and provided with ventilation mesh plates close to the rear side walls of the heater and the refrigerator, and the ventilation mesh plates facilitate heat dissipation in cooperation with one end of the heating box and the refrigeration box.

[0010] As an improvement, a first discharge valve connected to the air cavity is provided at the top of the interior of the heating box, and a second discharge valve connected to the air cavity is provided at the top of the interior of the refrigeration box. The opening and closing of the first discharge valve and the second discharge valve can realize the discharge operation of cold air and hot air, and cooperate with stretching and cooling molding.

[0011] As an improvement, the front outer walls of the heating box and the refrigeration box are both provided with a control panel, which is convenient for controlling the opening and closing of the discharge valve and adjusting the required temperature.

[0012] The advantages of the utility model compared with the prior art are: through the arrangement of the heating box and the refrigeration box, hot air can be generated during the stretching process and evenly distributed to the stretching frame through the air expansion mesh plate at the top of the air cavity, providing the required temperature for the stretching work of the ultrafiltration membrane. After the stretching is completed, the heating box stops working, and the refrigeration box quickly cools the ultrafiltration membrane to cool and shape it, thereby improving the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the first stereoscopic diagram of an ultrafiltration membrane stretching device of the utility model.

[0014] Figure 2 This is a second stereoscopic view of an ultrafiltration membrane stretching device of the utility model.

[0015] Figure 3 It is the third stereoscopic view of the ultrafiltration membrane stretching device of the utility model.

[0016] Figure 4 It is a sectional stereoscopic diagram of an ultrafiltration membrane stretching device of the utility model.

[0017] Figure 5 yes Figure 3 Schematic diagram of the structure of part A.

[0018] As shown in the figure: 1. Stable base; 2. Heating box; 3. Refrigeration box; 4. Workbench; 5. Stretching frame; 6. Moving plate; 7. Bidirectional threaded rod; 8. Fixed groove; 9. Pull rod; 10. Fastening plate; 11. Return spring; 12. Heater; 13. Refrigerator; 14. Air cavity; 15. Air expansion mesh plate; 16. Rotating motor; 17. Pull plate; 18. Ventilation mesh plate; 19. First discharge valve; 20. Second discharge valve; 21. Control panel. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] Embodiment 1

[0021] Combined with Figure 1-4 As shown, an ultrafiltration membrane stretching device comprises a stable base 1, a heating box 2 is fixedly arranged at the left end of the top surface of the stable base 1, a refrigeration box 3 symmetrical to the heating box 2 is arranged on the top surface of the stable base 1, a workbench 4 is connected to the top of the heating box 2 and the refrigeration box 3, a stretching frame 5 is fixedly arranged on the top surface of the workbench 4, a group of movable plates 6 are symmetrically slidably arranged in the stretching frame 5, the movable plates 6 are slidably connected to the front and rear inner walls of the stretching frame 5, the movable plates 6 are each provided with a fixing groove 8 on one side close to each other, a pull rod 9 extending into the fixing groove 8 is slidably provided through the top of the movable plate 6, a fastening plate 10 located in the fixing groove 8 is connected to the bottom end of the pull rod 9, a plurality of reset springs 11 fixedly connected to the top surface of the fastening plate 10 are evenly arranged on the inner wall of the top of the fixing groove 8, and a pull plate 17 close to the top surface of the movable plate 6 is connected to the top of the pull rod 9;

[0022] Through the above structure, the ultrafiltration membrane to be stretched is placed in the fixed grooves 8 on the two movable plates 6, and the pull plate 17 is released to be pressed down with the cooperation of the return spring 11, thereby completing the rapid limit fixation of the ultrafiltration membrane;

[0023] A bidirectional threaded rod 7 is rotatably provided between the inner walls on the left and right sides of the stretching frame 5 and is threadedly connected to the bottom end of the movable plate 6. A rotating motor 16 for driving the bidirectional threaded rod 7 is fixedly provided on the right outer wall of the stretching frame 5. The rotating motor 16 drives the bidirectional threaded rod 7 to rotate, thereby making the movable plates 6 move away from each other to stretch the ultrafiltration membrane.

[0024] Embodiment 2

[0025] Based on the first embodiment, combined with the attached Figure 5 As shown, the heating box 2 is provided with a heater 12, the refrigerating box 3 is provided with a refrigerator 13, the rear side walls of the heating box 2 and the refrigerating box 3 are connected and provided with a ventilation mesh plate 18 close to the rear side walls of the heater 12 and the refrigerator 13, the ventilation mesh plate 18 is convenient for cooperating with one end of the heating box 2 and the refrigerating box 3 to dissipate heat, the workbench 4 is provided with an air cavity 14 connected with the heating box 2 and the refrigerating box 3, the stretching frame 5 is provided with an air expansion mesh plate 15 connected with the air cavity 14, the top end of the heating box 2 is provided with a first discharge valve 19 connected with the air cavity 14, the top end of the refrigerating box 3 is provided with a second discharge valve 20 connected with the air cavity 14, and the front outer walls of the heating box 2 and the refrigerating box 3 are provided with a control panel 21;

[0026] Through the above structure, during the stretching process, the heater 12 in the heating box 2 is controlled by the control panel 21 to generate hot air of the required temperature, and the first discharge valve 19 is opened to discharge the hot air evenly into the stretching frame 5 through the air cavity 14 and the air expansion mesh plate 15 to cooperate with the stretching. After the stretching is completed, the refrigerator 13 in the refrigeration box 3 is operated, and the second discharge valve 20 is opened to discharge the cold air evenly into the stretching frame 5 through the air cavity 14 and the air expansion mesh plate 15 to cool and form the ultrafiltration membrane after stretching.

[0027] When the utility model is implemented, the ultrafiltration membrane to be stretched is first placed in the fixed grooves 8 on the two movable plates 6, and the pull plate 17 is released to be pressed down with the cooperation of the reset spring 11 to complete the rapid limit fixation of the ultrafiltration membrane, and then the rotating motor 16 drives the bidirectional threaded rod 7 to rotate, so that the movable plates 6 are separated from each other, and the ultrafiltration membrane is stretched. During the stretching process, the heater 12 in the heating box 2 is controlled by the control panel 21 to work, and hot air of the required temperature is generated. The first discharge valve 19 is opened to discharge the hot air evenly into the stretching frame 5 through the air cavity 14 and the air expansion mesh plate 15 to cooperate with the stretching. After the stretching is completed, the refrigerator 13 in the refrigeration box 3 is operated, and the second discharge valve 20 is opened to discharge the cold air evenly into the stretching frame 5 through the air cavity 14 and the air expansion mesh plate 15 to cool and form the ultrafiltration membrane after stretching. After cooling and forming, the pull rod 9 is pulled upward to make the fastening plate 10 away from the ultrafiltration membrane, and the processed ultrafiltration membrane is removed to complete the stretching processing operation.

[0028] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An ultrafiltration membrane stretching device, comprising a stable base (1), a heating box (2) is fixedly provided at the left end of the top surface of the stable base (1), a refrigeration box (3) symmetrical to the heating box (2) is provided on the top surface of the stable base (1), a workbench (4) is connected to the top of the heating box (2) and the refrigeration box (3), a stretching frame (5) is fixedly provided on the top surface of the workbench (4), a group of movable plates (6) are symmetrically slidably provided in the stretching frame (5), and the movable plates (6) are slidably connected to the front and rear inner walls of the stretching frame (5), characterized in that: A bidirectional threaded rod (7) is rotatably provided between the inner walls on the left and right sides of the stretching frame (5) and is threadedly connected to the bottom end of the movable plate (6). The movable plates (6) are provided with fixed grooves (8) on the sides close to each other. A pull rod (9) is slidably provided through the top end of the movable plate (6) and extends into the fixed groove (8). The bottom end of the pull rod (9) is connected to a fastening plate (10) located in the fixed groove (8). A plurality of return springs (11) are evenly provided on the inner wall at the top end of the fixed groove (8) and are fixedly connected to the top surface of the fastening plate (10). A heater (12) is provided in the heating box (2), a refrigerator (13) is provided in the cooling box (3), an air cavity (14) connected to the heating box (2) and the cooling box (3) is provided in the workbench (4), and an air diffusion mesh plate (15) connected to the air cavity (14) is provided in the stretching frame (5).

2. The ultrafiltration membrane stretching device according to claim 1, characterized in that: A rotating motor (16) for driving the bidirectional threaded rod (7) is fixedly provided on the right outer wall of the stretching frame (5).

3. The ultrafiltration membrane stretching device according to claim 1, characterized in that: The top end of the pull rod (9) is connected to a pull plate (17) which is in close contact with the top surface of the movable plate (6).

4. The ultrafiltration membrane stretching device according to claim 1, characterized in that: The rear side walls of the heating box (2) and the refrigeration box (3) are both connected and provided with a ventilation mesh plate (18) which is in close contact with the rear side walls of the heater (12) and the refrigerator (13).

5. The ultrafiltration membrane stretching device according to claim 1, characterized in that: A first discharge valve (19) communicating with the air cavity (14) is provided at the top of the interior of the heating box (2), and a second discharge valve (20) communicating with the air cavity (14) is provided at the top of the interior of the refrigeration box (3).

6. The ultrafiltration membrane stretching device according to claim 1, characterized in that: The front outer walls of the heating box (2) and the refrigeration box (3) are both provided with a control panel (21).

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