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Introduction to the relevant knowledge of the filter press sealing strip

Release time:

2021-09-15

The bottom of the sealing strip body of the filter press is provided with an arc-shaped groove. When the sealing strip body is pressed, the sealing strip body is pressed to both sides, which improves the sealing performance of the sealing strip and makes the bonding between the sealing strip body and the filter plate easier. Tight; in addition, it can prevent the groove from cracking due to extrusion, the stress distribution of the arc groove is more uniform, and the overall service life of the sealing strip is prolonged.

Introduction to the relevant knowledge of the filter press sealing strip

The traditional method of sealing the periphery of the filter plate is to paste or embed an 0-shaped sealing strip or a rectangular sealing strip around the filter plate, but the contact surface between the filter plate and the sealing strip is prone to slag inclusion due to the extrusion of the sealing strip, resulting in a decrease in sealing performance and filtering. Slurry leaks. In addition, the sealing strip is prone to premature extrusion and has a short service life. Then there is a filter press sealing strip with a triangular cross-section. There is a triangular groove at the bottom of the sealing strip, and the sealing strip is embedded in the sealing groove of the matching filter plate. Since the bottom of the sealing strip of the filter press is provided with a triangular groove, the sealing strip will be pressed to the middle when it is pressed, so that there is a gap between the side of the sealing strip and the filter plate, which is easy to trap impurities. After clamping the impurities, the sealing strip will be further pressed to the middle, causing a vicious circle. Moreover, the stress distribution of the triangular groove is uneven, which easily leads to cracking of the groove after multiple extrusions, which affects the service life and sealing performance of the sealing strip. The technical problem to be solved by the utility model is to provide a filter press sealing strip with better sealing performance and longer service life.

In order to solve the above-mentioned technical problems, the above-mentioned filter press sealing strip adopts the following technical scheme: a filter press sealing strip, which includes a sealing strip body, and an arc-shaped groove is arranged at the bottom of the sealing strip body. As a further improvement of the present invention, the tangent of the arc end point on the groove segment is parallel to the side surface of the sealing strip body. The width of the bottom edge of the triangular section of the sealing strip body is 5 mm and 80 mm, and the included angle at the top is 5 degrees to 170 degrees. The top outer surface of the triangular section of the weather strip body is pointed or curved.

The utility model relates to a filter plate sealing strip of a filter press, comprising a sealing strip body, the sealing strip body is embedded in a matching sealing groove on the filter plate, and the cross-sectional shape of the sealing strip body is a triangle. An arc-shaped groove is arranged along the length direction of the sealing strip at the bottom where the sealing strip body and the filter plate are matched. When the sealing strip body is pressed, it will be squeezed to both sides. Because the groove is arc-shaped, the sealing performance of the sealing strip body is improved, and the sealing strip body and the filter plate are more closely attached; in addition, the stress distribution of the arc-shaped groove More uniform, prevent the groove from cracking due to extrusion, and prolong the service life of the sealing strip body. From the cross section of the weather strip body, OB is the side surface of the weather strip body, and the tangent at the end of the arc is parallel to OB. The width of the bottom edge of the sealing strip body is 5 mm and 80 mm, the bottom angle α is 10° 80°, and the top included angle β is 5° 170°. The outer surface of the top of the weather strip body is sharp or curved.

Compared with the prior art, the advantages of the above-mentioned sealing strip of the filter press are: the bottom of the sealing strip body of the filter press is provided with an arc-shaped groove. When the sealing strip body is pressed, the sealing strip body is pressed to both sides, which improves the sealing performance. The sealing performance of the strip makes the bonding between the sealing strip body and the filter plate more tightly; in addition, it can prevent the groove from cracking due to extrusion, and the stress distribution of the arc groove is more uniform, extending the overall service life of the sealing strip.