Diaphragm stretching mechanism

Abstract

The utility model relates to the technical field of diaphragm stretching, in particular to a diaphragm stretching mechanism. Comprising a first seat body structure and a second seat body structure connected to the first seat body structure in a sliding mode, the second seat body structure can linearly slide to be away from the first seat body structure, the second seat body structure is reset through elastic force to be close to the first seat body structure, and a clamp is fixed to the second seat body structure. After the diaphragm is fixed through the clamp pulled out relative to the first seat body structure, the clamp resets along with the second seat body structure, and the diaphragm is stretched. Compared with a traditional scheme, the operation of the hand is transferred to the clamp instead of directly finely adjusting the diaphragm on the operation table top, so that the jaw of the hand is far away from friction pieces such as a steel wire ball and the operation table top.

Description

A diaphragm stretching mechanism Technical Field

[0001] This utility model relates to the field of diaphragm stretching technology, and more specifically to a diaphragm stretching mechanism. Background Technology

[0002] Alkaline water electrolysis is a common method for hydrogen production, generating hydrogen and oxygen by electrolyzing water. In this process, the separator plays a crucial role, not only separating the positive and negative electrodes to prevent short circuits but also preventing the mixing of gaseous products from the two electrodes and providing high ionic conductivity to facilitate the transfer of hydroxide ions from the cathode to the anode. However, the performance of separators has changed and improved significantly over time.

[0003] The emergence of third-generation composite diaphragms marks a new era in diaphragm technology. These diaphragms exhibit excellent performance in terms of gas barrier properties, high-temperature resistance, and stability against concentrated alkalis. Most importantly, they possess the lowest electrical resistance, resulting in the lowest energy consumption and high cost-effectiveness, thus giving them a dominant position in the market.

[0004] Market demand for composite diaphragms focuses on three key characteristics: performance, safety, and lifespan. High ion conductivity, high temperature resistance, alkali stability, low electrical resistance, and cost-effectiveness are the main performance requirements. Meanwhile, good mechanical strength, environmental friendliness, and long lifespan are also key market concerns. Our initial testing method involved using a rotating steel wool pad to press down on the diaphragm, requiring the diaphragm to be fixed to the worktable. Our current method uses clamps fixed to a worktable with pre-drilled holes, secured with connectors, and the clamps are used to press down on the diaphragm. However, this method requires the user to frequently smooth and stretch the diaphragm using their fingers (usually the thumb and forefinger) around the steel wool pad before fixing the clamps, which can cause skin irritation from the steel wool. The operation needs optimization. Summary of the Invention

[0005] This utility model provides a diaphragm stretching mechanism that can stretch the diaphragm after pressing it down.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A diaphragm stretching mechanism includes a first base structure and a second base structure slidably connected to the first base structure. The second base structure is capable of linearly sliding away from the first base structure and is also capable of elastically resetting to approach the first base structure. A clamp is fixed on the second base structure.

[0008] The first base structure includes a base, and a guide groove is provided on the top of the base;

[0009] The second body structure includes a base, on which a mating part is fixedly connected. The mating part is slidably connected in a guide groove, so that the mating part can slide linearly to enter or move away from the base.

[0010] The clamp is fixed to the base.

[0011] The first seat structure has a through slot running vertically through it, and a connector that passes through the slot is suspended from the upper part of the first seat structure.

[0012] The connector includes a top head for pressing against the top of the base, and a rod fixed to the lower end of the head for passing through a slot.

[0013] The rod has external threads or a columnar structure with the diameter increasing from bottom to top.

[0014] The clamp includes a connecting part fixed to the second base structure, and a pressing part is fixed to the left end of the connecting part. The connecting part and the pressing part are preferably made of spring steel.

[0015] The connecting parts and the pressure parts are preferably made of spring steel.

[0016] The bottom of the pressure section protrudes downward in an arc segment that rests against the upper end of the second base structure. The pressure section and the base are used to clamp the diaphragm.

[0017] An elastic anti-slip part is fixed to the bottom of the pressure section.

[0018] The top is fixed to the upper end of the pressure section, and an internal threaded hole is provided on the top. A pre-tightening member is connected to the top. The lower section of the pre-tightening member is a rod-shaped part with external threads, which is screwed into the internal threaded hole by the threads. A circular hole is provided on the pressure section directly below the pre-tightening member, so that when the pre-tightening member is rotated, the rod-shaped part descends and passes through the circular hole to increase the pressure on the diaphragm.

[0019] The beneficial effects of this diaphragm stretching mechanism are as follows:

[0020] After the horizontal, relatively base-extended pressure section replaces the clamping plate and presses down on the diaphragm, the pressure section is released, and it can return to its original position towards the base using its elastic force, thereby stretching the diaphragm towards the base. Therefore, when one end of the diaphragm is fixed, the other end relative to that end can be stretched to facilitate abrasion resistance testing. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the diaphragm stretching mechanism;

[0022] Figure 2 is a schematic diagram of the base, guide groove, limiting seat and slot;

[0023] Figure 3 is a schematic diagram of the base and mating parts;

[0024] Figure 4 is a front view of the diaphragm stretching mechanism;

[0025] Figure 5 is a schematic diagram of the preloaded part passing through the round hole and abutting against the anti-slip part.

[0026] In the diagram: 1. Base; 2. Guide groove; 3. Limiting seat; 4. Groove; 5. Base; 6. Mating part; 7. Connecting part; 8. Pressing part; 9. Top; 10. Guide rod; 11. Limiting part; 12. Elastic part; 13. Connecting part; 14. Anti-slip part; 15. Pre-tightening part. Detailed Implementation

[0027] A diaphragm stretching mechanism includes a first base structure and a second base structure that cooperate with each other. The second base structure has only a degree of freedom in the horizontal straight line direction relative to the first base structure, allowing the first base structure and the second base structure to move closer or further apart.

[0028] The feasible embodiments are not limited to these, and the fixed connection generally refers to the connection method using welding, bonding, or fasteners such as screws and bolts: Referring to Figures 1 and 2, the first base structure includes a base 1, with a guide groove 2 at the front and rear of the top of the base 1, and a through slot 4 on the base 1. Two limiting seats 3 are fixedly connected to the upper end of the base 1. The slot 4 allows the connector 13 to pass through. The connector 13 includes a head at the top, which is used to press against the top of the base 1. A rod is fixedly connected to the lower end of the head of the connector 13. The rod may have external threads for threaded connection into a threaded hole, or it may be a columnar structure with the diameter increasing from bottom to top for insertion into a hole. The purpose is to insert or thread it into the reserved hole of the operating table of the diaphragm abrasion resistance testing equipment. If the operating table of the testing equipment does not have a reserved hole or cannot be machined, a counterweight can be glued to the base 1 or the friction of the base 1 can be increased, such as by adding anti-slip textures or fixing rubber anti-slip pads.

[0029] Referring to Figure 3, the second base structure includes a base 5, with two mating parts 6 fixedly connected to the right end of the base 5. The two mating parts 6 are slidably connected to two slots 4 by insertion. The mating parts 6 can be trapezoidal or convex, and the slots 4 have the same shape as the mating parts 6, allowing them to fit together so that the second base structure has only a degree of freedom in the horizontal straight line direction relative to the first base structure.

[0030] The diaphragm stretching mechanism also includes a clamp for fixing the diaphragm. Referring to Figure 4, the clamp includes a connecting portion 7 fixed to the base 5, and a pressing portion 8 fixed to the left end of the connecting portion 7. The connecting portion 7 and the pressing portion 8 are preferably made of spring steel. The bottom of the pressing portion 8 protrudes downward in an arc segment. The connecting portion 7 is fixed to the upper end of the base 5, and the bottom of the pressing portion 8 presses against the upper end of the base 5. When the pressing portion 8 is lifted upward, the connecting portion 7 and the pressing portion 8 deform upward around the connecting segment, exhibiting a downward restoring tendency. When the upwardly lifted pressing portion 8 is released, the pressing portion 8 presses back onto the upper end of the base 5. The diaphragm is fed between the pressing portion 8 and the base 5 when the pressing portion 8 is lifted, and the pressing portion 8 is released to clamp the diaphragm.

[0031] The second seat structure is spring-loaded and repositioned towards the base 1. Specifically, two guide rods 10 are fixed to the right end of the connecting part 7. The two guide rods 10 are respectively inserted into two limiting seats 3, and there is only a left-right degree of freedom between the guide rods 10 and the limiting seats 3. A limiting part 11 is fixed to the right end of the guide rod 10. An elastic member 12 is provided between the limiting seat 3 and the limiting part 11, and the elastic member 12 causes the limiting part 11 to have a tendency to move to the right. The elastic member 12 is preferably a compressed spring. A spring is sleeved on each guide rod 10, and the left and right ends of the elastic member 12 are respectively fixed to the adjacent limiting seat 3 and the limiting part 11.

[0032] In use, pull the pressure part 8 to the upper left so that the base 5 is away from the base 1. At the same time, the diaphragm is sent between the pressure part 8 and the base 5. Lower the pressure part 8, clamp the diaphragm, and then release the pressure part 8. The base 5 uses its elasticity to move closer to the base 1 again. At this time, the diaphragm receives a pulling force towards the base 1, thus completing the stretching.

[0033] To further facilitate diaphragm stretching, a top 9 is fixed to the upper end of the pressure section 8. The top 9 has an internally threaded hole, and a pre-tightening member 15 is connected to it. The lower section of the pre-tightening member 15 is a rod-shaped part with external threads, which screws into the internally threaded hole. The top of the pre-tightening member 15 is a disc or handle-shaped structure. A circular hole is provided on the pressure section 8 directly below the pre-tightening member 15, so that when the pre-tightening member 15 is rotated, the rod-shaped part descends through the circular hole, applying strong positive pressure to press the diaphragm on the base 5. This forms two fixing methods: the pressure section 8's return after being lifted is a spring-loaded fixing, suitable for tests where the diaphragm and steel wool are subjected to relatively small frictional forces and low rotational speeds. The pre-tightening member 15's downward pressing fixing scheme is an active compression fixing, suitable for tests with longer durations or higher steel wool frictional forces and rotational speeds.

[0034] Preferably, an elastic anti-slip part 14 is provided at the bottom of the pressure part 8. The anti-slip part 14 is preferably made of stretchable rubber or elastic fiber cloth. The left and right ends of the anti-slip part 14 are fixed to the bottom of the pressure part 8 by adhesives such as structural adhesive, and cover the round hole. When the pre-tightening member 15 is pressed down through the round hole, it can abut against the top of the anti-slip part 14, thereby causing the anti-slip part 14 to deform downward and press against the diaphragm on the base 5, increasing the friction between the anti-slip part 14 and the diaphragm. At the same time, lifting the pre-tightening member 15 and pulling the pre-tightening member 15 horizontally are more convenient than directly holding the pressure part 8.

Claims

1. A diaphragm stretching mechanism, characterized in that, It includes a first seat structure and a second seat structure slidably connected to the first seat structure. The second seat structure can slide linearly away from the first seat structure and can be reset by elastic force to approach the first seat structure. A clamp is fixed on the second seat structure.

2. The diaphragm stretching mechanism according to claim 1, characterized in that, The first seat structure includes a base, and a guide groove is provided on the top of the base; the second seat structure includes a base, and a mating part is fixedly connected to the base. The mating part is slidably connected in the guide groove, so that the mating part can slide linearly to enter or move away from the base; the clamp is fixedly connected to the base.

3. The diaphragm stretching mechanism according to claim 1, characterized in that, The first seat structure has a through slot running vertically through it, and a connector that passes through the slot is suspended from the upper part of the first seat structure.

4. The diaphragm stretching mechanism according to claim 3, characterized in that, The connector includes a top head for pressing against the top of the base, and a rod fixed to the lower end of the head for passing through a slot.

5. The diaphragm stretching mechanism according to claim 4, characterized in that, The rod has external threads or a columnar structure with the diameter increasing from bottom to top.

6. The diaphragm stretching mechanism according to claim 1, characterized in that, The clamp includes a connecting part fixed to the second base structure, and a pressure part is fixed to the left end of the connecting part.

7. The diaphragm stretching mechanism according to claim 6, characterized in that, The connecting parts and the pressure parts are made of spring steel.

8. The diaphragm stretching mechanism according to claim 6, characterized in that, The bottom of the pressure section protrudes downward in an arc segment that rests against the upper end of the second base structure. The pressure section and the base are used to clamp the diaphragm.

9. The diaphragm stretching mechanism according to claim 6, characterized in that, An elastic anti-slip part is fixed to the bottom of the pressure section.

10. The diaphragm stretching mechanism according to any one of claims 7 to 9, characterized in that, The top is fixed to the upper end of the pressure section, and an internal threaded hole is provided on the top. A pre-tightening member is connected to the top. The lower section of the pre-tightening member is a rod-shaped part with external threads, which is screwed into the internal threaded hole by the threads. A circular hole is provided on the pressure section directly below the pre-tightening member, so that when the pre-tightening member is rotated, the rod-shaped part descends and passes through the circular hole to increase the pressure on the diaphragm.

Images