A filter plate and plate-and-frame filter press using the same

Abstract

The utility model relates to plate and frame filter press technical field discloses a filter plate, including core plate, elastic ring, a plurality of positioning column and a plurality of fixed column, core plate is equipped with a plurality of positioning hole and a plurality of fixed hole, and the elastic ring sets up at the edge of the board surface of core plate, and the fixed hole and positioning hole form T shape structure. Through positioning hole and fixed hole T shape structure, cooperate positioning column and fixed column to the positioning installation of elastic ring along the thickness direction of core plate, and the fixed column is from side and is in the positioning column, so that the elastic ring is when being clamped on the adjacent two filter plates of plate and frame filter press, the positioning column has certain elastic displacement space along the thickness direction of core plate, solves the problem that the filter plate is easy to appear local sealing not strictly when the elastic ring is completely positioned, significantly improves the sealing performance and reliability of filter plate, and makes the installation and replacement of sealing ring more convenient.

Claims

1. A filter plate, characterized in that: It includes a core plate, an elastic ring, several positioning posts and several fixing posts. The core plate is provided with several positioning holes and several fixing holes, and the elastic ring is disposed on the edge of the core plate surface. The elastic ring is used for edge sealing when the core plate is in use, and a receiving cavity is formed between the elastic ring and the surface of the core plate; The length direction of the positioning hole is set along the thickness direction of the core plate. The positioning hole and the positioning post correspond one-to-one. The positioning post is embedded in the positioning hole. The positioning hole is used to restrict the movement of the positioning post perpendicular to its length direction. The length direction of the fixing hole is perpendicular to the thickness direction of the core plate. The fixing hole and the fixing post correspond one-to-one. The fixing post is embedded in the fixing hole. The fixing hole is used to restrict the movement of the fixing post perpendicular to its length direction. A plurality of positioning holes are spaced apart on the outer edge of the core plate. Each positioning hole corresponds to a fixing hole. One end of each fixing hole is connected to the middle of the positioning hole. The fixing hole and the positioning hole form a T-shaped structure. The other end of the fixing hole passes through the side of the core plate. One end of the positioning post is connected to the elastic ring, and the other end of the positioning post is embedded in the positioning hole. One end of the fixing post abuts against the side of the positioning post, and the other end of the fixing post is embedded in the fixing hole. The fixing post is used to restrict the movement of the positioning post along the length direction of the positioning hole.

2. A filter plate according to claim 1, characterized in that: The positioning post has a positioning groove in the middle, and one end of the fixing post is embedded in the positioning groove.

3. A filter plate according to claim 2, characterized in that: The positioning groove is a trapezoidal groove with a narrow bottom width and a wide opening width.

4. A filter plate according to claim 1, characterized in that: The outer side of the fixing post is provided with an external thread, and the inner side of the fixing hole is provided with an internal thread that matches the external thread of the fixing post. The fixing post is screwed into the fixing hole.

5. A filter plate according to claim 1, characterized in that: It also includes a mounting ring, which is disposed between the elastic ring and the core plate, and one end of the positioning post is connected to the elastic ring through the mounting ring.

6. A filter plate according to claim 5, characterized in that: The mounting ring is made of hard plastic.

7. A filter plate according to claim 1, characterized in that: It also includes an outer frame, which has a support surface parallel to the core plate surface, and the elastic ring has a sealing surface parallel to the core plate surface. The distance between the support surface and the core plate surface is d1, and the distance between the sealing surface and the core plate surface is d2, where d1 < d2.

8. A filter plate according to claim 7, characterized in that: It also includes a pad, which is disposed on the surface of the core plate. The thickness of the pad is d3, where d3 < d1, and the outer edge of the pad abuts against the inner edge of the elastic ring.

9. A filter plate according to claim 7, characterized in that: It also includes a washer disposed on the surface of the core board, the washer having a thickness less than d1, and the washer being used to limit and prevent the outer frame from being excessively compressed.

10. A plate and frame filter press, characterized in that: The device includes a frame, a pressing mechanism, and several filter plates as described in any one of claims 1-9, wherein the filter plates are stacked on the frame along their thickness direction, and the frame is used to press the filter plates.

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