CN2036855U - membrane filter - Google Patents

Abstract

The utility model invention is a single-chip filter for filtering liquid or gas materials. It adopts the structure of a double-sided support net and a support plate. The support plate is connected with the shell of the filter as a whole. It is simple and has good filtration performance, especially when filtering, it can withstand pressure difference and perform backwashing operation, which prolongs the life of the filter membrane, reduces the cost, and is easy to operate.

Description

The invention is used for filtering liquid or gas materials and belongs to chemical equipment.

In recent decades, the variety of microporous membranes in the world has continued to increase, and the application fields have also continued to expand. Membrane companies have been established in various countries to produce various membranes and filters. The membranes produced so far include fiber membranes, nylon membranes, and polyester membranes. Propylene, PTFE membranes and nuclear pore membranes. The filters produced include needle-type, single-piece, multi-piece and folded filters. However, a single-piece filter that can be used for backwashing has not yet been seen.

my country developed and produced ordinary cellulose microporous membranes in the 1960s, and produced nuclear microporous membranes in the 1980s. In the 1970s, the production of single-piece membrane filters began, and some foreign folded filters were introduced, and there was a small amount of production. Similarly, the monolithic filter cannot be used for backwashing of the membrane, and there is no domestic country where the nuclear pore membrane is used in a monolithic filter and can be backwashed.

The object of the present invention is to provide a single-piece membrane filter capable of backwashing, which has the advantages of simple structure, convenient operation and good filtering performance.

The main features of the present invention are: the two sides of the filter membrane have support screens and support plates, and the support plate is integrated with the shell of the filter, and the support net is integrated with the O-shaped sealing ring. Each is equipped with an air outlet valve, and the inner surface is engraved with circular and radial flow channels. The filter membrane can be nuclear pore membrane, filter cloth, filter paper, fiber and other filter materials.

Description of drawings: Figure 1. Structural block diagram of membrane filter;

Figure 2. Structural diagram of the upper and lower support plates of the membrane filter;

Figure 3. Structural diagram of support net and sealing ring

［1］Inlet and outlet of material liquid ［2］Release valve ［3］Fixing screw ［4］Support leg

［5］upper and lower support plate ［6］support net ［7］filter membrane ［8］circular flow channel

[9] Radial flow channel [10] O-ring

The structure of the utility model is further described in detail in conjunction with the accompanying drawings: the filter consists of upper and lower filter plates (i.e. support plates) [5], support nets [6], air release valve [2], feed liquid inlet and outlet joints [1 ] Fastening screw [3], O-ring [10] and support leg [4]. There are support nets [6] and support plates [5] on both sides of the filter membrane [7], and an air release valve [2] is installed on the shell of the support plate [5] to increase the pressure that the membrane can withstand during filtration. Poor, it is used for multiple backwashing to remove the dirt intercepted by membrane filtration, restore the performance of the membrane, and prolong the service life of the membrane. Simultaneously, a structure in which the supporting net [6] and the sealing ring [10] are bonded into one is adopted, so that the supporting and sealing effects are better. The inner surface of support plate ［ 5 ］ is engraved with the runner of garden shape ［ 8 ］ and radial ［ 9 ］, becomes one with the shell, upper and lower support plates ［ 5 ］ are fastened together with screws. The filter plate material can be stainless steel, aluminum alloy or engineering plastic polycarbonate (PC). The support net is made of polyester mesh and rubber (silicone or nitrile rubber).

Adopting the filter of the utility model, due to the integrated structure of the support plate and the shell, the processing is material-saving, time-saving and easy to operate. The traditional filter of the same kind only has a single-sided support plate, so that the microporous membrane cannot withstand the reverse pressure. The remarkable feature of the filter of the present invention is that the reverse can withstand the same pressure difference as the forward, so it can be backwashed and the membrane surface can be removed. The dirt intercepted on the surface, (such as using nuclear pore membrane as a filter membrane) restores the filtration performance of the membrane, and can also prevent the damage of the membrane caused by the instantaneous back pressure during operation, prolong the service life of the membrane and reduce the cost.

Example: 12mm stainless steel plate is machined to form two filter plates, the inner surface of the filter plate is processed with circular and radial flow channels, and two support nets bonded together by polyester net and O-shaped sealing ring are placed in the middle , A nuclear pore membrane with a pore size of 1.0μ is installed in the two support nets as a filter membrane, and the upper and lower support plates, that is, the outer shell, are fastened symmetrically and evenly with screws, which are used to filter the injection liquid to remove particles and microorganisms in the liquid . After being filtered by this filter, the particles in the liquid medicine can reach the standard of the National Pharmacopoeia.

Claims (2)

1, a kind of film filter comprises filter membrane [7], gripper shoe [5], and O RunddichtringO [10], vent valve [2], material liquid entrance [1] is characterized in that:

(1) said gripper shoe [5] is connected as a single entity with the shell of filter;

(2) the double side support plate structure of employing energy backwash;

(3) two sides of film has supporting network [6], and supporting network [6] is sticked together with O-ring seals [10];

(4) gripper shoe [5] inner face is carved with garden ring-type [8] and radial [9] runner.

2, film filter according to claim 1 is characterized in that said filter membrane is a nucleopore membranes, also can be miillpore filter, filter paper, filter cloth.

Images