Composite filter element

Abstract

The utility model discloses a composite filter element which comprises a carbon core positioned inside, an ultrafiltration membrane is sleeved outside the carbon core, a base is arranged at the bottom ends of the carbon core and the ultrafiltration membrane, plungers are arranged at the top ends of the carbon core and the ultrafiltration membrane, micropores of 1-3nm are formed in the surface of the carbon core, the membrane aperture of the ultrafiltration membrane is 3-20nm, and the diameter of the ultrafiltration membrane is 3-20nm. And the ultrafiltration membrane is an asymmetric membrane type. The ultrafiltration membrane is arranged outside the carbon core, most impurities can be intercepted through the ultrafiltration membrane, and then water treated by the ultrafiltration membrane is introduced to the carbon core to be filtered, so that the carbon core is well protected, and the service life of the carbon core is greatly prolonged; in some high-strength filtration and adsorption scenes needing the carbon core, the composite filter core disclosed by the utility model effectively ensures the long-term work of the carbon core.

Description

Technical Field

[0001] The utility model relates to the technical field of filter elements, in particular to a composite filter element. Background Art

[0002] The filter element is a purification device required for the purpose of purifying the original ecological resources and reusing the resources. The filter element has the characteristics of low pressure difference, strong dirt holding capacity and long service life. The liquid filter element makes the liquid (including oil, water, etc.) clean to the state required for production and life, that is, to make the liquid reach a certain cleanliness.

[0003] The existing filter element has a single structure and poor water purification effect. The single filter element structure has a poor effect of intercepting most impurities, and the single filter element structure generally has a short service life. Therefore, it is urgent to design a composite filter element to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a composite filter element to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A composite filter element comprises a carbon core located inside, an ultrafiltration membrane is sleeved on the outside of the carbon core, bases are arranged at the bottom ends of the carbon core and the ultrafiltration membrane, and plungers are arranged at the top ends of the carbon core and the ultrafiltration membrane, micropores of 1-3nm are arranged on the surface of the carbon core, the pore size of the ultrafiltration membrane is 3-20nm, and the ultrafiltration membrane is an asymmetric membrane type.

[0007] Preferably, the base, plunger, ultrafiltration membrane and carbon core are externally covered with a shell, and a water inlet pipe is arranged on the outer wall of one side of the shell.

[0008] Preferably, a guide hole is provided at the center of the top of the plunger, and a drainage pipe corresponding to the guide hole is fixedly installed on the top of the plunger.

[0009] Preferably, a second sewage pipe located between the ultrafiltration membrane and the carbon core is provided on the outer wall of the bottom of the base, and a first sewage pipe is provided on the outer wall of the bottom of the shell.

[0010] Preferably, an ultrafiltration membrane slot and a carbon core slot are provided on the outer walls on the opposite sides of the base and the plunger, the carbon core is inserted into the carbon core slot, the ultrafiltration membrane is inserted into the ultrafiltration membrane slot, and a plug is provided at the center of the inner wall at the bottom of the base and is inserted into the bottom end of the carbon core.

[0011] In the above technical solution, the utility model provides a composite filter element, which has the following beneficial effects:

[0012] The ultrafiltration membrane of the utility model is arranged on the outside of the carbon core, and most impurities can be intercepted by the ultrafiltration membrane first, and then the water treated by the ultrafiltration membrane is introduced into the carbon core for filtration, which plays a good protective role on the carbon core and greatly improves the service life of the carbon core. In some high-intensity filtration and adsorption scenarios that require a carbon core, the composite filter element of the utility model effectively guarantees the long-term operation of the carbon core. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the ultrafiltration membrane and carbon core structure provided for a composite filter element embodiment of the utility model.

[0015] Figure 2 A structural cross-sectional view of a composite filter element embodiment of the utility model.

[0016] Figure 3 A schematic diagram of the base structure provided for a composite filter element embodiment of the utility model.

[0017] Figure 4 A schematic diagram of the housing structure provided for a composite filter embodiment of the utility model Figure 1 .

[0018] Figure 5 A schematic diagram of the housing structure provided for a composite filter embodiment of the utility model Figure 2 .

[0019] 1 outer shell, 2 base, 3 ultrafiltration membrane, 4 carbon core, 5 water inlet pipe, 6 plunger, 7 drainage pipe, 8 sewage pipe one, 9 sewage pipe two, 10 ultrafiltration membrane slot, 11 carbon core slot, 12 plug. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-5 As shown, a composite filter element provided by an embodiment of the utility model includes a carbon core 4 located inside, an ultrafiltration membrane 3 is sleeved on the outside of the carbon core 4, a base 2 is provided at the bottom ends of the carbon core 4 and the ultrafiltration membrane 3, and a plunger 6 is provided at the top ends of the carbon core 4 and the ultrafiltration membrane 3, the surface of the carbon core 4 is provided with micropores of 1-3nm, the pore size of the ultrafiltration membrane 3 is 3-20nm, and the ultrafiltration membrane 3 is an asymmetric membrane type.

[0022] Specifically, in this embodiment, it includes a carbon core 4 located inside. The carbon rod filter element is also called a sintered activated carbon filter element. It is a new type of deep filter element. It uses high-quality activated carbon as a raw material and a low-thermal-melting adhesive to form its structure. It is continuously extruded and then sintered and solidified at low temperature. It has a certain strength and has excellent adsorption properties of granular activated carbon. It can effectively remove organic matter, particles, rust, residual chlorine, odor, etc. in the liquid. The outer part of the carbon core 4 is sleeved with an ultrafiltration membrane 3. The ultrafiltration membrane 3 can intercept most of the suspended matter and colloids in the water, but it cannot remove soluble small molecules, which hinders the ultrafiltration technology in drinking water. In the application of water treatment, the water flux is large, the higher the pure water permeability, the better, and the retention rate is generally required to be >99%. The bottom ends of the carbon core 4 and the ultrafiltration membrane 3 are provided with a base 2, and the top ends of the carbon core 4 and the ultrafiltration membrane 3 are provided with a plunger 6. The surface of the carbon core 4 is provided with micropores of 1-3nm, and the micropores on the surface of the carbon core 4 can preferably be 2nm apart. The pore size of the ultrafiltration membrane 3 is 3-20nm, and the pore size of the ultrafiltration membrane 3 is preferably 8nm, and the ultrafiltration membrane 3 is an asymmetric membrane type, so the ultrafiltration membrane 3 is arranged on the outside of the carbon core 4, thereby forming a composite filter element structure to achieve efficient purification of water.

[0023] The utility model provides a composite filter element, in which the ultrafiltration membrane 3 of the utility model is arranged outside the carbon core 4, and most impurities can be intercepted by the ultrafiltration membrane 3, so that the water treated by the ultrafiltration membrane 3 is introduced into the carbon core 4 for filtration, which plays a good role in protecting the carbon core 4 and greatly improves the service life of the carbon core 4. In some high-intensity filtration and adsorption scenarios that require the carbon core 4, the composite filter element of the utility model effectively guarantees the long-term operation of the carbon core 4.

[0024] In one embodiment of the present invention, a base 2, a plunger 6, an ultrafiltration membrane 3 and a carbon core 4 are covered with a housing 1, and a water inlet pipe 5 is provided on the outer wall of one side of the housing 1. People can connect the water inlet pipe 5 with an external pipeline to introduce water to be purified into the interior of the housing 1, and use the ultrafiltration membrane 3 and the carbon core 4 inside the housing 1 to achieve high-quality purification of water;

[0025] A guide hole is provided at the center of the top of the plunger 6, and a drain pipe 7 corresponding to the guide hole is fixedly installed on the top of the plunger 6. The water entering the housing 1 through the water inlet pipe 5 is first purified by the ultrafiltration membrane 3, and impurities are retained by the ultrafiltration membrane 3 in the cavity between the housing 1 and the ultrafiltration membrane 3. Relatively clean water passes through the ultrafiltration membrane 3 and enters the cavity between the ultrafiltration membrane 3 and the carbon core 4, and is purified again by the carbon core 4, so that the clean water passes through the carbon core 4 and enters the drain pipe 7, thereby completing the complete purification path of the water;

[0026] A drain pipe 2 9 is provided on the outer wall at the bottom of the base 2, located between the ultrafiltration membrane 3 and the carbon core 4, and a drain pipe 1 8 is provided on the outer wall at the bottom of the outer shell 1. Impurities retained by the ultrafiltration membrane 3 can be discharged from the cavity between the outer shell 1 and the ultrafiltration membrane 3 through the drain pipe 1 8, and impurities retained by the carbon core 4 can be discharged from the cavity between the ultrafiltration membrane 3 and the carbon core 4 through the drain pipe 2 9.

[0027] As another embodiment provided by the utility model, an ultrafiltration membrane slot 10 and a carbon core slot 11 are provided on the outer walls on the opposite sides of the base 2 and the plunger 6, the carbon core 4 is inserted into the carbon core slot 11, and the ultrafiltration membrane 3 is inserted into the ultrafiltration membrane slot 10. When replacing the ultrafiltration membrane 3 and the carbon core 4, the operator can remove the plunger 6 from the top of the shell 1 through a threaded connection, and then take out the carbon core 4 and the ultrafiltration membrane 3 respectively. After the cleaning of the inside of the shell 1 is completed, take out the new carbon core 4 and ultrafiltration membrane 3, insert the ultrafiltration membrane 3 into the ultrafiltration membrane slot 10 on the base 2, and insert the carbon core 4 into the carbon core slot 11 on the base 2, and finally seal the plunger 6 at the top of the shell 1. The operation is simple and convenient for people to replace the composite filter element. A plug 12 inserted into the bottom end of the carbon core 4 is provided at the center of the inner wall at the bottom of the base 2. The plug 12 is used to achieve stable installation of the carbon core 4, thereby ensuring the reliability of the carbon core 4 on the base 2.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite filter element, characterized in that: The invention comprises a carbon core (4) located inside, an ultrafiltration membrane (3) is sleeved on the outside of the carbon core (4), a base (2) is arranged at the bottom of the carbon core (4) and the ultrafiltration membrane (3), and a plunger (6) is arranged at the top of the carbon core (4) and the ultrafiltration membrane (3), micropores of 1-3 nm are arranged on the surface of the carbon core (4), the pore size of the ultrafiltration membrane (3) is 3-20 nm, and the ultrafiltration membrane (3) is an asymmetric membrane type.

2. A composite filter element according to claim 1, characterized in that: The base (2), the plunger (6), the ultrafiltration membrane (3) and the carbon core (4) are covered with an outer shell (1), and a water inlet pipe (5) is arranged on the outer wall of one side of the outer shell (1).

3. A composite filter element according to claim 1, characterized in that: A flow guide hole is provided at the center of the top of the plunger (6), and a drainage pipe (7) corresponding to the flow guide hole is fixedly installed on the top of the plunger (6).

4. A composite filter element according to claim 2, characterized in that: A second sewage pipe (9) located between the ultrafiltration membrane (3) and the carbon core (4) is arranged on the outer wall of the bottom of the base (2), and a first sewage pipe (8) is arranged on the outer wall of the bottom of the housing (1).

5. A composite filter element according to claim 1, characterized in that: An ultrafiltration membrane slot (10) and a carbon core slot (11) are provided on the outer walls on the opposite sides of the base (2) and the plunger (6); the carbon core (4) is inserted into the interior of the carbon core slot (11); the ultrafiltration membrane (3) is inserted into the interior of the ultrafiltration membrane slot (10); and a plug (12) is provided at the center of the bottom inner wall of the base (2) and is inserted into the interior of the bottom end of the carbon core (4).

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