Extrusion device for graphite felt test

Abstract

The utility model discloses an extrusion device for graphite felt testing, which is characterized by comprising a bottom plate for placing a water tank, a mounting seat and a limiting seat are arranged on the bottom plate, and a pressing handle is hinged above the mounting seat; the device further comprises a latticed extrusion plate, a connecting rod is arranged above the extrusion plate, and the upper end of the connecting rod is hinged to the pressing handle. And a limiting rod matched with the limiting seat is also arranged on the pressing handle. According to the structure disclosed by the utility model, through the arrangement of the limiting device, the compression ratio of the extrusion plate to the graphite felt is effectively controlled, and the graphite felt cannot be damaged on the premise of ensuring that the graphite felt is fully extruded. In addition, according to the scheme, the treatment efficiency is improved, and the labor intensity and the material consumption are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite felt testing devices, and particularly relates to an extrusion device for graphite felt testing. When testing the fiber density and porosity of graphite felt, an extrusion device is used for the graphite felt to make it fully absorb water. Background Art

[0002] As the electrode material of the all-vanadium redox flow battery, the porous carbon fiber electrode graphite felt provides a reaction site for the electrochemical reaction of the all-vanadium redox flow battery. This requires that the porous carbon fiber electrode graphite felt has high chemical and electrochemical stability, and should also have excellent fiber density. Therefore, it is necessary to test its fiber density and porosity.

[0003] During the test, the graphite felt needs to be soaked. In order to ensure the soaking effect, the tester needs to knead and squeeze the graphite felt by hand in water or alcohol until it reaches a completely soaked state. This operation not only reduces the detection efficiency, but also may cause damage to the graphite felt by the tester. In addition, there are also problems of high labor intensity and waste of consumables such as disposable gloves. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an extrusion device for graphite felt testing to solve the problems in the prior art.

[0005] The utility model is realized by the following technical scheme: an extrusion device for graphite felt testing, characterized in that: it includes a bottom plate for placing a water tank, an installation seat and a limit seat are arranged on the bottom plate, and a pressing handle is hinged above the installation seat; it also includes a grid-shaped extrusion plate, a connecting rod is arranged above the extrusion plate, and the upper end of the connecting rod is hinged to the pressing handle; a limit rod matching with the limit seat is also arranged on the pressing handle.

[0006] Further: the limit rod is a bolt, the bolt body is in threaded cooperation with the pressing handle, and the lower part of the bolt cooperates with the upper part of the limit seat.

[0007] Further: it also includes a balance spring, the lower end of the balance spring is arranged on the limit seat, and the upper end cooperates with the pressing handle.

[0008] Further: a scale for measuring the height of the bolt is also arranged on the pressing handle.

[0009] The beneficial effect of the utility model is: with the structure of the utility model, through the setting of the limiting device, the compression rate of the extrusion plate on the graphite felt is effectively controlled, ensuring that the graphite felt will not be damaged on the premise of sufficient extrusion. In addition, this solution also improves the processing efficiency, reduces the labor intensity and consumable consumption. Description of the Drawings

[0010] Figure 1 is the overall structural schematic diagram of the present utility model;

[0011] Figure 2 is the side view structural schematic diagram of the present utility model;

[0012] Figure 3 is the top view structural schematic diagram of the present utility model.

[0013] Explanation of the numbers in the figure: 1 is the bottom plate, 2 is the water tank, 3 is the mounting seat, 4 is the limiting seat, 5 is the extrusion plate, 6 is the connecting rod, 7 is the limiting rod, 8 is the balance spring, 9 is the scale, and 10 is the pressing handle. Specific embodiments

[0014] As Figures 1-3 shown, the present utility model discloses an extrusion device for graphite felt testing, which includes a bottom plate 1 for placing the water tank 2. The water tank is movably placed on the bottom plate. A mounting seat 3 and a limiting seat 4 are fixedly arranged on the bottom plate. A pressing handle 10 is hinged above the mounting seat 3; it further includes a grid-shaped extrusion plate 5. A connecting rod 6 is fixedly arranged above the extrusion plate. The upper end of the connecting rod is welded or hinged to the pressing handle; a limiting rod 7 cooperating with the limiting seat is further arranged on the pressing handle.

[0015] Preferably: The limiting rod is a bolt. The bolt body is in threaded cooperation with the pressing handle. The height of the bolt is adjustable. The lower part of the bolt contacts and limits with the upper part of the limiting seat. Further, in order to improve the stability of the bolt, a locking nut is further arranged on the bolt.

[0016] Preferably: It further includes a balance spring 8. The lower end of the balance spring is arranged on the limiting seat, and the upper end contacts and cooperates with the pressing handle. The balance spring plays a supporting role for the pressing handle. This supporting force is approximately the same as the gravity of the pressing handle and the extrusion plate, so that the force for extruding the graphite felt is basically equal to the force applied by the operator, which is convenient for controlling the force magnitude. At the same time, when no external force is applied, the extrusion plate is placed on the graphite felt and basically has no pressure on the graphite felt.

[0017] Preferably: A scale 9 for measuring the height of the bolt is further arranged on the pressing handle. By rotating the bolt for limiting and according to the corresponding relationship between the upper end of the bolt and the scale, the length of the lower end of the bolt can be obtained, and then the amount of the pressing handle being pressed down can be controlled, that is, the compression rate of the graphite felt can be controlled.

[0018] It should be noted that in this solution, the balance spring selects a spring with moderate hardness, so that after the lower end is fixed to the limiting seat, it can effectively maintain stability; the extrusion plate is a grid plate or a perforated plate, etc., which has a certain strength and meets the stability requirements during extrusion without deformation. At the same time, its size is close to the size of the water tank, and when the pressing handle is pressed down and lifted, it does not interfere with other positions of the water tank and affect the operation. Other structures not described in detail are all prior arts.

[0019] The using process of the utility model is as follows.

[0020] First, lift the pressing handle, put the cut graphite felt into the water tank filled with water or alcohol, adjust the limiting rod, and control the compression ratio of the graphite felt between 25% and 30%. Then press the pressing handle to press the extrusion plate on the graphite felt, and press down the pressing handle until the lower end of the limiting rod abuts against the upper end of the limiting seat in place. After repeated pressing, lift the pressing handle, move the extrusion plate out of the water tank, and use tools such as tweezers to take out the graphite felt for subsequent operations.

[0021] This solution provides an extrusion device, which eliminates the material damage and waste of consumables caused by manual extrusion in traditional operations. During the operation, through the cooperation of the upper end of the limiting rod and the scale, the position of the limiting rod can be conveniently adjusted, and then the pressing distance of the extrusion plate can be adjusted, effectively controlling the compression ratio of the graphite felt and ensuring that it will not be damaged on the premise of sufficient extrusion. In addition, the extrusion of the graphite felt in this solution has good consistency and good repeatability in multiple experiments, avoiding the experimental errors caused by manual operation and improving the test accuracy.

Claims

1. An extrusion device for graphite felt testing, characterized in that: It includes a bottom plate for placing a water tank, on which a mounting seat and a limiting seat are provided, and a pressing handle is hinged above the mounting seat; It further includes a grid-shaped extrusion plate, above which a connecting rod is provided, and the upper end of the connecting rod is hinged to the pressing handle; A limiting rod cooperating with the limiting seat is also provided on the pressing handle.

2. The extrusion device for graphite felt testing according to claim 1, wherein: The limiting rod is a bolt, the bolt body is in threaded cooperation with the pressing handle, and the lower part of the bolt cooperates with the upper part of the limiting seat.

3. The extrusion device for graphite felt testing according to claim 2, characterized in that: It further includes a balance spring, the lower end of the balance spring is arranged on the limiting seat, and the upper end cooperates with the pressing handle.

4. The extrusion device for graphite felt testing according to claim 2, wherein: A scale for measuring the height of the bolt is also provided on the pressing handle.

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