CN2180333Y - Fan shape sheet of filter machine without disassembly - Google Patents

Abstract

The utility model relates to ore dressing and coal preparation equipment, in particular to ore dressing plants and parts of vacuum filters used in coal preparation plants.

It consists of a frame with grooves [2], a zigzagging corrugated core plate [3] with holes running radially on the fan inside the frame, and the core plate is covered with a flexible wall [5] with holes above and below. It makes the replacement of the filter screen convenient and fast, saves time and labor, and improves the efficiency of cake removal.

Description

The utility model relates to ore dressing and coal preparation equipment, in particular to ore dressing plants and parts of vacuum filters used in coal preparation plants.

In the mineral processing plant of the prior art, the sector piece [1] of the vacuum filter in the coal preparation plant uses a group of bolts to compress the assembly [6] and fasten it on the hollow shaft of the vacuum filter, and the PG116--1/2.7 Take the vacuum filter as an example, 12 groups of 120 sector pieces are installed on the hollow shaft of the vacuum filter. The existing fan-shaped piece is a flat hollow plate structure. A filter screen with a very fine mesh needs to be set outside each filter sector as a filter medium. The filter sector of the prior art has the following problems:

To replace the filter screen, at least two sets of bolt compression components [6] need to be loosened, and after the fan-shaped piece is taken down, the damaged filter mesh bag is taken off, and a new filter mesh bag is put on, and the opening of the fan-shaped piece needs to be replaced by hand. It takes at least 2 people 20 minutes to replace a filter bag. Since replacing the filter screen is a very common job, the labor intensity of the workers is high and dirty. And because the rigid hollow wall of the existing fan-shaped sheet and the filter matter (mine cake or coal cake) are not deformed under vacuum and normal pressure, the cake removal efficiency of the existing fan-shaped sheet is low.

The design purpose of the utility model is to overcome the deficiencies of the prior art, to provide a fan-shaped vacuum filter that can replace the filter screen without dismantling the fan-shaped piece, and can force the filter cake to wrinkle to improve the cake-off efficiency of the fan-shaped piece. piece.

The purpose of design of the utility model can be achieved through the following measures:

An annular groove [2] is designed on the frame of the fan-shaped piece, so that the filter screen can be cut into a filter mesh of a corresponding size, and a plug strip slightly smaller than the annular groove [2] is inserted together with the edge of the filter mesh The ring-shaped groove [2] utilizes the buckle pressure of the plug strip together with the filter screen and the friction force with the ring-mounted groove [2] to fix the filter screen.

The rigid hollow plate wall structure of the existing fan-shaped plate is changed, and the corrugated core plate [3] and flexible wall [5] are designed. Forced wrinkling, the flexible wall [5], together with the filter screen and the filter cake, rebounds to the state [4] under normal pressure, so as to achieve the purpose of bending the filter cake to strengthen the cake removal and improve the cake removal rate.

An improved fan-shaped sheet of a wrinkle-free filter without dismantling, which is characterized in that a meandering pleated core plate [3] with holes is fixed in the fan surface running from the inner side to the outer circumference of the groove [2], and the upper and lower sides of the core plate are Covered with a perforated flexible wall [5].

Compared with the prior art, the utility model has the following advantages:

(1) The filter does not need to be sewn into a bag, it only needs to be cut into a corresponding size from both sides of the fan-shaped piece of the vacuum filter, and fixed with a plug respectively, no need to disassemble the fan-shaped piece of the vacuum filter, and one person can complete it in 5 minutes In the work of replacing a filter, it is convenient and quick to replace the medium, saving time and effort, and improving work efficiency by about 10 times. (2) The corrugated core plate [3] and the flexible wall [5] can force the filter cake to wrinkle and deform under vacuum and normal pressure, strengthen cake removal, and improve cake removal efficiency by 30-50%.

Accompanying drawing 1 is the schematic diagram of the structure of the fan-shaped piece of the wrinkle-free filter, and Fig. 2 is the enlarged view of the groove. 1--Sector as a whole; 2--with annular groove; 3--creased core plate; 4--original rigid hollow wall; 5--flexible wall; 6--bolt compression assembly.

The utility model is described in further detail below in conjunction with the accompanying drawings:

The accompanying drawings show the structure of the fan-shaped piece of the filter without dismantling and folding of the utility model. Its shape is consistent with the original fan-shaped piece, and it consists of a frame and an annular groove [2] for inserting the filter screen groove, a corrugated core plate [3] of the fan-shaped piece, a flexible wall [5] of the fan-shaped piece and other parts. . The corrugated heart plate ［ 3 ］ of fan-shaped sheet is bent with steel plate and forms, and also available plastic plate is pressed and forms. The frame and annular groove ［ 2 ］ of the filter mesh sheet are bent with thin steel plates, and large-scale production can also be made by plastic extrusion. The flexible wall ［ 5 ］ of sector sheet is made with rubber. Other parts are made of general steel. The annular groove [2] designed on the frame of the fan-shaped sheet can insert the filter net into the annular recess together with the edge of the filter mesh with a plug strip with a smaller section than the annular groove [2] from both sides of the filter sheet. Groove [2], using the friction between the plug and the filter screen and the annular groove [2] to fix the filter screen, so that it is not necessary to disassemble the filter sheet, and it is not necessary to sew the filter screen into a bag, so as to achieve the non-disassembly sector That is to replace the filter screen, improve the efficiency and reduce the labor intensity of workers.

The corrugated core plate [3] and flexible wall [5] of the fan-shaped sheet, the flexible wall [5] together with the filter screen and filter cake are forced to bend according to the shape of the corrugated core plate [3] under the vacuum state, and the flexible wall [5] is bent according to the shape of the corrugated core plate [3] under normal pressure. The wall [5] together with the filter screen and the filtered filter cake bounce back to the [4] state, which is equivalent to breaking the filter cake into several pieces, so as to achieve the purpose of bending the filter cake to strengthen the cake removal and improve the cake removal rate.

When the fan-shaped piece is implemented, grooves are processed around the original frame, and a meandering corrugated core plate with holes is fixed along the direction from the inner side to the outer circumference, and the core plate is covered with a flexible wall with holes up and down.

The non-dismantling pleat filter sector is suitable for all kinds of disc vacuum filters.

Claims (1)

An improved fan-shaped sheet for a wrinkle-free filter without dismantling, which is characterized in that a zigzagging corrugated core plate [3] with holes is fixed in the frame of the groove [2] from the inner side to the outer circumference, and the upper and lower sides of the core plate are Covered with perforated flexible walls [5].