CN204582702U - A kind of rotation net cage filter - Google Patents

Abstract

The utility model relates to a rotating mesh cage filter, which comprises a machine box, a filter cage and a transmission shaft. A filtrate inlet and a filtrate outlet are arranged at both ends of the machine box, and the outer circumference of the filter cage is covered. There is a filter, and the filter cage is equipped with a slag scraper and a Jiaolong conveyor; one end of the filter cage is an open end, and the other end is a closed end, and the open end is provided with a ring-mouth sealing static ring, a sealing rubber plate and a ring The mouth seal moving ring, a compression spring, presses the sealing rubber plate on the ring seal static ring; a small pulley is arranged at the closed end, and the toothed cam ring installed on the Jiaolong conveyor shaft meshes with the small pulley ;The inner surface of the filter cage is close to the open end, and a cage supporting wheel is provided to support the rotation of the filter cage; The rotating power of the conveyor is driven by the rotation of the cage, without additional drive, saving manufacturing costs and reducing daily maintenance.

Description

A rotary cage filter

technical field

The utility model relates to a liquid filtering device, in particular to a rotating cage filter.

Background technique

Liquid filtration is to make the impurity-containing liquid flow through a filter medium with certain pores, and the impurities in the liquid are trapped on the surface or inside of the medium and removed. Among them, screen filtration is the most widely used type of liquid filtration. The filter medium is Sieve to remove coarser suspended solids. During use, the screen is easily blocked by impurities, which affects the continuous filtration process. It must be backwashed or cleaned and regenerated to restore its filtration capacity. Filter regeneration can remove and clean the filter to remove the impurities adhering to its surface, but it will affect the continuity of production; it can also carry out continuous backwashing on-line, but at present, this type of filter equipment is too large and occupies a relatively large area of the production site. Large area, there are certain limitations when used in conjunction with production lines.

Contents of the invention

The problem to be solved by the utility model is to overcome the deficiency of the background technology and provide a rotating cage type filter which uses the circular rotation of the cage to perform continuous filtration, slag scraping and slag removal.

The technical scheme that the utility model uses is as follows:

A kind of rotary screen cage filter, comprising machine box, filter screen cage and drive shaft, filtrate inlet and filtrate outlet are arranged at both ends of the machine box, filter screen is covered on the outer circumference of the filter screen cage, The filter cage is equipped with a slag scraper and a dragon conveyor; one end of the filter cage is an open end, and the other end is a closed end, and the open end is provided with a ring seal static ring, a seal rubber plate and a ring seal dynamic ring , once the spring is pressed, the sealing rubber plate is pressed on the static ring of the ring mouth seal; a small puller is arranged at the closed end, and the toothed cam ring installed on the shaft of the Jiaolong conveyor meshes with the small puller.

The drive shaft is set at the outer axis position of the closed end of the filter cage, and on the inner surface of the filter cage close to the open end, a cage supporting wheel is provided to support the rotation of the filter cage; outside the filter cage, there is a pair of tight mesh rollers , There is a narrow slit on the tight mesh roller.

The filter screen cage includes a cylindrical screen cage frame and a layer of filter screen covering the outer circumference, one end is closed and the other end is open. The closed end is connected with a transmission shaft to drive the rotation of the filter cage, and the inner side of the open end is equipped with a cage supporting wheel to support the rotation of the filter cage; the outer circumference of the open end is equipped with a ring seal dynamic ring, and the flat side of the dynamic ring is fixed with a seal Rubber plate, the compression spring compresses this sealing rubber plate close to the ring mouth to seal the static ring. The ring mouth seal moving ring rotates together with the filter cage, and forms a pair of sealing pairs with the ring mouth seal static ring. There is a pair of relatively rotating tight mesh rollers on the cage frame, which wraps the filter mesh tightly around the outer circumference of the cage frame. A slag scraper is arranged inside the filter cage, which rotates circularly with the filter cage. A Jiaolong conveyor is installed at the high point in the filter cage. When the impurities are brought to the highest position by the slag scraper, they will fall to the slag receiving tank under the action of gravity or blowing air flow and be carried out by the Jiaolong conveyor. The jiaolong conveyor is intermittently rotating, and its rotating power comes from a small pulley installed at the closed end of the filter cage. The small pulling wheels are evenly distributed along the rotation centerline of the filter cage, and while rotating together with the filter cage, they intermittently pull the toothed cams installed at one end of the Jiaolong conveyor one by one, thereby driving the Jiaolong conveyor to rotate intermittently and transport the fallen impurities to the on the collection tray outside the machine box. On the other hand, after the filter cage rotates to the highest point to remove slag, it is sprayed by compressed air or high-pressure liquid in the spray pipe to remove stubborn impurities adhering to the filter screen. After the filter screen is cleaned, it is re-rotated and immersed in the liquid surface for the next cycle. filter operation.

During the rotation, the trapped impurities filtered out of the cage are removed from the liquid surface. When the rotation reaches the highest position, the impurities fall and the Jiaolong conveyor is automatically taken out, and then the cage is regenerated by spraying and re-rotated to the liquid surface for circulating filtration. Operation.

The utility model has the advantages of compact structure, wide site adaptability, large filtration flow rate, no side leakage of impurities, and automatic slag removal while filtering and cleaning. The rotational power of the Jiaolong conveyor is only driven by the rotation of the cage, without additional motor drive, saving manufacturing costs and reducing daily maintenance.

Description of drawings

Figure 1 is a schematic diagram of a rotary cage filter.

FIG. 2 is a schematic right view of FIG. 1 .

Figure 3 is a three-dimensional schematic diagram of the mesh cage and its sealing ring.

Fig. 4 is a three-dimensional schematic diagram of the dragon conveyor for slag discharge.

In the figure, the machine box 1, the machine frame 2, the slag scraper 3, the filter cage 4, the cage frame 5, the filter screen 6, the small pulling wheel 7, the cage supporting wheel 8, the slag receiving groove 9, the toothed cam 10. Spray flushing pipe 11, Jiaolong conveyor 12, ring mouth seal static ring 13, seal rubber plate 14, ring mouth seal dynamic ring 15, compression spring 16, cage rear end seal plate 17, drive shaft 18, filter Liquid outlet 19, filtrate inlet 20, impurity slag outlet 21, tight screen roller 22, fixed screw rod 23.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 1, Fig. 2, present embodiment is that filter screen cage 4 is installed in machine casing 1, and the inside of filter screen cage is cage frame 5, and this frame outer peripheral surface is covered with one deck filter screen 6. One end of the filter cage is closed with a cage rear end sealing plate 17, and the other end is open. A cage supporting wheel 8 is installed on the inside of the open end, and there is an annular sealing moving ring 15 on the outer circumference of the open end. One side of the moving ring is closely attached to a seal Rubber plate 14, this rubber plate is pressed on the relative ring mouth seal static ring 13 by compression spring 16, and static ring is welded and fixed in the machine casing 1 and does not move. There are multiple slag scraping plates 3 in the cage frame 5, a pair of tighter rollers 22 are arranged on the outer circumference, and each tighter roller is provided with 2 slits for fixing the filter screen when rolling the net, and after the tighter filter screen 5 Lock and fix with fixing screw rod 23.

Referring to Fig. 3 and Fig. 4, six small pulling wheels 7 are evenly distributed along the circumference on the inner side of the rear end sealing plate 17 of the net cage, and a set of Jiaolong conveyor 12 is installed on the top of the net cage, and one end of the shaft head is equipped with a toothed The cam 10 and the small pulling wheel pull the toothed cam for intermittent rotation, driving the Jiaolong conveyor to rotate and discharge slag.

Claims (2)

1. A rotating mesh cage type filter, comprising a machine casing, a filter mesh cage and a drive shaft, a filtrate inlet and a filtrate outlet are arranged at both ends of the machine casing, and it is characterized in that: outside the filter mesh cage The circumference is covered with a filter, and the filter cage is equipped with a slag scraper and a dragon conveyor; one end of the filter cage is an open end, and the other end is a closed end, and the open end is provided with a ring mouth sealing static ring and a sealing rubber plate And the ring mouth seal moving ring, a compression spring, the seal rubber plate is pressed on the ring mouth seal static ring; a small puller is arranged at the closed end, and the toothed cam ring installed on the Jiaolong conveyor shaft and the small puller wheel meshing. 2. The rotary cage filter according to claim 1, characterized in that: the transmission shaft is arranged at the outer axis position of the closed end of the filter cage, and a cage holder is provided on the inner surface of the filter cage close to the open end The wheel is used to support the rotation of the filter cage; outside the filter cage, there is a pair of tight mesh rollers, and there are narrow slits on the tight mesh rollers.