Film tearing machine for ionic membrane of vanadium redox flow battery

Abstract

The utility model relates to the technical field of film tearing equipment, in particular to a film tearing machine for an ionic film of a vanadium redox flow battery. The winding device comprises a first winding shaft for winding a protective film, a second winding shaft for winding an ionic membrane, a discharging shaft for placing an original material, a rotary damper connected to the discharging shaft, and a motor for driving the first winding shaft and the second winding shaft to rotate, the driven friction disc is connected to the second winding shaft, the bearing is installed on the second winding shaft, the sleeve is connected to the bearing, the connecting cylinder is connected to the sleeve in a sliding mode, the driving friction disc is connected to the sleeve, the elastic piece is installed between the sleeve and the driving friction disc, and the driving friction disc abuts against the driven friction disc under the elastic force effect of the elastic piece; the device has the function that the linear speed on the second winding shaft is equal to the linear speed on the first winding shaft all the time, so that the ionic membrane can be wound under proper tension.

Description

Technical Field

[0001] The present application relates to the technical field of film tearing equipment, and in particular to a film tearing machine for ion membranes of vanadium redox flow batteries. Background Art

[0002] As an emerging electrochemical energy storage system, all-vanadium redox flow battery has good application prospects in solving the problem of renewable energy utilization. As one of the key functional materials of all-vanadium flow battery, ion membrane should have low vanadium ion permeability, high conductivity and good chemical stability.

[0003] The ion membrane has a protective film on its surface when it leaves the factory. The protective film and the ion membrane need to be separated when in use.

[0004] The current film tearing machine includes a frame, a first winding shaft, a second winding shaft, and a discharge shaft arranged on the frame; a first motor and a second motor driving the first winding shaft and the second winding shaft; and a rotary damper connected to the discharge shaft. When working, the ion membrane with the protective membrane is placed on the discharge shaft, the ion membrane and the protective membrane are separated and wound on the first winding shaft and the second winding shaft respectively, and the first motor and the second motor are started to start winding respectively.

[0005] However, the thickness of the ion membrane is much lower than that of the protective membrane. During the winding process, the diameter of the wound protective membrane becomes larger and larger and is much larger than the diameter of the wound ion membrane. It is necessary to adjust the speed of the first motor and the second motor to control the tension of the ion membrane and the protective membrane, but it is impossible to complete the adjustment in real time.

[0006] One existing solution is to install a tension detection roller, and detect the tension of the ion membrane through a pressure sensor under the tension detection roller bearing. The detection signal controls the speed of the winding roller motor through an electronic circuit to adjust the tension. However, the measurement accuracy of the tension sensor is greatly affected by the environment, such as humidity, temperature, and electromagnetic fields. It is not reliable enough, and if a fault occurs during later use, it requires professional personnel to repair it, which increases maintenance costs. Utility Model Content

[0007] In order to ensure that the tension of the rolled-up ion membrane and protective membrane is within an appropriate range.

[0008] The present application provides a membrane tearing machine for vanadium liquid flow battery ion membrane adopts the following technical solution:

[0009] A film tearing machine for vanadium liquid flow battery ion membrane, comprising a first winding shaft for winding up a protective film, a second winding shaft for winding up the ion membrane, a feeding shaft for placing raw materials, a rotary damper connected to the feeding shaft, and a motor for driving the first winding shaft and the second winding shaft to rotate, and also comprising a driven friction disk connected to the second winding shaft, a bearing installed on the second winding shaft, a sleeve connected to the bearing, a connecting cylinder slidably connected to the sleeve, an active friction disk connected to the sleeve, and an elastic member installed between the sleeve and the active friction disk, wherein the active friction disk is pressed against the driven friction disk under the elastic force of the elastic member.

[0010] By adopting the above technical solution, under the elastic force of the elastic member, the active friction disc is pressed against the driven friction disc, and the driven friction disc drives the second winding shaft to rotate. The force of tearing the ion membrane from the protective membrane can be measured, and the resistance of the unwinding shaft connected to the rotary damper can be adjusted. At this time, it is only necessary to adjust the magnitude of the force on the second winding shaft, which is greater than the force required for tearing the film and less than the force of the unwinding shaft, so that the second winding shaft can always be in a semi-linked state, so that the linear speed on the second winding shaft is always equal to the linear speed on the first winding shaft.

[0011] Preferably, two washers are slidably connected to the sleeve, and the two washers are located between the bearing and the connecting tube. The elastic member is a spring, and the spring is sleeved on the sleeve and located between the two washers.

[0012] By adopting the above technical solution, the elastic member is set as a spring, which has low cost and is easy to replace.

[0013] Preferably, it further comprises a nut threadedly connected to the sleeve, wherein the nut is pressed against a gasket away from the driven friction disc.

[0014] By adopting the above technical solution, the pressure between the active friction disc and the passive friction disc can be adjusted by rotating the nut.

[0015] Preferably, a protrusion is fixedly connected to the sleeve, and a sliding groove corresponding to the protrusion is opened on the connecting tube, and the opening direction of the sliding groove is parallel to the axial direction of the second winding shaft.

[0016] By adopting the above technical solution, relative rotation between the connecting cylinder and the sleeve is prevented.

[0017] Preferably, at least two protrusions are provided.

[0018] By adopting the above technical solution, the sliding between the connecting tube and the sleeve is smoother.

[0019] Preferably, the plurality of protrusions are evenly distributed in the circumferential direction of the sleeve.

[0020] By adopting the above technical solution, the sliding between the connecting tube and the sleeve is smoother.

[0021] Preferably, the driven friction disc is detachably connected to the second winding shaft.

[0022] By adopting the above technical solution, the driven friction disc is easily damaged after friction, and is configured as a detachable structure for easy replacement.

[0023] Preferably, a fixing ring is fixedly mounted on one side of the driven friction disc, and a bolt which is pressed against the second winding shaft is passed through the fixing ring.

[0024] By adopting the technical solution, the driven friction disc can be disassembled conveniently and quickly by screwing the bolts.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The second winding shaft is always in a semi-linked state, so that the linear speed on the second winding shaft is always equal to the linear speed on the first winding shaft, and the ion membrane will not be wound too loose or too tight.

[0027] 2. The overall structure is simple, the operation is convenient, and the parts can be replaced quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a partial structural explosion diagram of an embodiment of the present application.

[0030] Explanation of the accompanying drawings: 1. first winding shaft; 2. second winding shaft; 21. expansion shaft; 22. roller shaft; 3. rotary damper; 4. motor; 5. driven friction disk; 6. fixing ring; 7. active friction disk; 8. connecting cylinder; 81. slide groove; 9. gasket; 10. nut; 11. sleeve; 111. protrusion; 12. first pulley; 13. spring; 14. second pulley; 15. third pulley; 16. fourth pulley; 17. fifth pulley; 18. sixth pulley; 19. first distribution shaft; 20. second distribution shaft. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-2 This application is described in further detail.

[0032] The present application embodiment discloses a membrane tearing machine for vanadium redox flow battery ion membrane. Figure 1 , including a placement rack, the placement rack has three layers: upper, middle and lower.

[0033] The film tearing machine for vanadium liquid flow battery ion membrane also includes a first winding shaft 1 arranged on the upper layer of the placement rack and a second winding shaft 2 arranged on the middle layer of the placement rack, a discharge shaft arranged on the lower layer of the placement rack (due to the angle of the drawing, it is not shown, and the structure is the same as the first winding shaft 1 and the second winding shaft 2), a first dividing shaft 19 and a second dividing shaft 20 arranged in the middle layer of the placement rack, a rotary damper 3 connected to the discharge shaft, and a motor 4 that drives the first winding shaft 1 and the second winding shaft 2 to rotate. The rotary damper 3 and the motor 4 are placed on the lower layer of the placement rack.

[0034] refer to Figure 2 The second winding shaft 2 includes a cylindrical roller shaft 22 and an expansion shaft 21. The roller shaft 22 is fixedly connected to one end of the expansion shaft 21 and the axes of the two coincide. A driven friction disc 5 is arranged at one end of the roller shaft 22 close to the expansion shaft 21. The driven friction disc 5 is in a circular ring shape. The driven friction disc 5 is sleeved on the roller shaft 22 with a clearance fit. A fixing ring 6 is welded on the side of the driven friction disc 5 close to the expansion shaft 21. The fixing ring 6 is in a circular ring shape. A threaded hole is opened on the fixing ring 6. The extension direction of the threaded hole is perpendicular to the axial direction of the roller shaft 22. A bolt is screwed in the threaded hole, and the bolt is close to the roller shaft 22.

[0035] refer to Figure 2 A bearing (not shown in the drawings) is sleeved on one end of the roller shaft 22 away from the driven friction disc 5, and the inner ring of the bearing is clamped on the outer side of the roller shaft 22. A sleeve 11 is sleeved on the outer ring of the bearing. The sleeve 11 is a hollow steel pipe. One end of the sleeve 11 is clamped on the outer ring of the bearing. Two protrusions 111 are arranged on the outside of the sleeve 11. The protrusion 111 is a rectangular parallelepiped. The length direction of the protrusion 111 is parallel to the axial direction of the sleeve 11, and the protrusion 111 is located in the middle position of the axial direction of the sleeve 11.

[0036] refer to Figure 2 A connecting tube 8 is sleeved on the outside of the sleeve 11. The connecting tube 8 is a hollow steel tube. The inner diameter of the connecting tube 8 is larger than the outer diameter of the sleeve 11. A sliding groove 81 matching with the protrusion 111 is opened on the connecting tube 8. The extension direction of the sliding groove 81 is parallel to the axial direction of the connecting tube 8. The protrusion 111 is slidably connected in the sliding groove 81. An active friction disc 7 is fixedly connected to the side wall of the connecting tube 8.

[0037] refer to Figure 2 Two gaskets 9 are connected to the sleeve 11, and the gasket 9 is annular. A first pulley 12 is sleeved on the outer side of one end of the sleeve 11 connected to the bearing. The two gaskets 9 are located between the first pulley 12 and the protrusion 111. A spring 13 is arranged between the two gaskets 9. The spring 13 is sleeved on the sleeve 11. A nut 10 is screwed on the sleeve 11. The nut 10 is located between the gasket 9 and the first pulley 12. Under the action of the elastic force of the spring 13, the gasket 9 away from the first pulley 12 is pressed against the connecting tube 8, and the other gasket 9 is pressed against the nut 10.

[0038] refer to Figure 1 , Figure 2 The second pulley 14 is installed at the end of the output shaft of the motor 4, and the third pulley 15, the fourth pulley 16 and the fifth pulley 17 are installed on the shaft of the middle layer of the placement rack, and the above three pulleys rotate coaxially. The diameter of the third pulley 15 is larger than that of the fifth pulley 17, and the diameter of the fifth pulley 17 is larger than that of the fourth pulley 16. The sixth pulley 18 is installed on the first winding shaft 1 installed on the upper layer of the placement rack, and the diameter of the sixth pulley 18 is the same as that of the fourth pulley 16.

[0039] refer to Figure 1 , Figure 2 The first pulley 12 and the third pulley 15 are connected by a belt, the second pulley 14 and the fifth pulley 17 are connected by a belt, and the fourth pulley 16 and the sixth pulley 18 are connected by a belt.

[0040] The implementation principle of a membrane tearing machine for vanadium redox flow battery ion membrane in the embodiment of the present application is as follows:

[0041] 1. Place the original material on the unwinding shaft, separate the ion membrane and the protective membrane, the protective membrane and the ion membrane pass through the first material distribution shaft 19 and the second material distribution shaft 20, the protective membrane is connected to the first winding shaft 1, and the ion membrane is connected to the expansion shaft 21 of the second winding shaft 2.

[0042] Second, start the motor 4. Due to the sprocket group (first pulley 12-fifth pulley 17 and three belts), the linear speed of the first pulley 12 is greater than the linear speed of the sixth pulley 18. The power of the motor 4 is transmitted to the sleeve 11, and the sleeve 11 transfers the power to the connecting cylinder 8. The active friction disc 7 and the driven friction disc 5 are squeezed and contacted by the spring 13. Under the action of friction, the active friction disc 7 drives the driven friction disc 5 to rotate, the driven friction disc 5 drives the roller 22 to rotate, and the roller 22 drives the expansion shaft 21 to rotate. The force of tearing the ion membrane from the protective membrane can be measured, and the resistance of the unwinding shaft connected to the rotary damper 3 can be adjusted. At this time, it is only necessary to adjust the size of the force on the second winding shaft 2, which is greater than the force required to tear the film and less than the force to drive the unwinding shaft. In this way, the second winding shaft 2 can always be in a semi-linked state, so that the linear speed on the second winding shaft 2 is always equal to the linear speed on the first winding shaft 1.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A film tearing machine for vanadium redox flow battery ion membrane, comprising a first winding shaft (1) for winding up a protective film, a second winding shaft (2) for winding up an ion membrane, a feed shaft for placing raw materials, a rotary damper (3) connected to the feed shaft, and a motor (4) for driving the first winding shaft (1) and the second winding shaft (2) to rotate, characterized in that: The invention also comprises a driven friction disc (5) connected to the second winding shaft (2), a bearing mounted on the second winding shaft (2), a sleeve (11) connected to the bearing, a connecting sleeve (8) slidably connected to the sleeve (11), an active friction disc (7) connected to the sleeve (11), and an elastic member mounted between the sleeve (11) and the active friction disc (7); under the elastic force of the elastic member, the active friction disc (7) is pressed against the driven friction disc (5).

2. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 1, characterized in that: The sleeve (11) is slidably connected to two washers (9), the two washers (9) are located between the bearing and the connecting tube (8), and the elastic member is a spring (13), which is sleeved on the sleeve (11) and located between the two washers (9).

3. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 2, characterized in that: It also includes a nut (10) threadedly connected to the sleeve (11), and the nut (10) is tightly pressed against a gasket (9) away from the driven friction disc (5).

4. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 3, characterized in that: A protrusion (111) is fixedly connected to the sleeve (11), and a sliding groove (81) corresponding to the protrusion (111) is opened on the connecting tube (8), and the opening direction of the sliding groove (81) is parallel to the axial direction of the second winding shaft (2).

5. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 4, characterized in that: At least two protrusions (111) are provided.

6. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 5, characterized in that: The plurality of protrusions (111) are evenly distributed in the circumferential direction of the sleeve (11).

7. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 6, characterized in that: The driven friction disc (5) is detachably connected to the second winding shaft (2).

8. The membrane tearing machine for vanadium redox flow battery ion membrane according to claim 7, characterized in that: A fixing ring (6) is fixedly mounted on one side of the driven friction disc (5), and a bolt that is tightly pressed against the second winding shaft (2) is passed through the fixing ring (6).

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