PCT composite filter element

Abstract

The PCT composite filter element comprises an outer shell, the outer shell is in a barrel shape with an upward opening, a filter element assembly is arranged in the outer shell, an upper cover assembly is arranged above the outer shell, the upper cover assembly comprises an upper cover, a waterway plate and a sealing piece, and the waterway plate is provided with a water inlet, a water outlet and a connector connected with the filter element assembly; the filter element assembly comprises a first filter element and a second filter element, a filter material used by the first filter element is PP cotton and compressed carbon, and a filter material used by the second filter element is sintered carbon; the first filter element and the second filter element are tubular, the second filter element is sleeved with the first filter element, and a sleeve is arranged between the first filter element and the second filter element; according to the formed flow channel, water enters the outer shell from the upper cover assembly, then flows through the first filter element, then returns to the upper cover assembly, enters the outer shell again, flows through the second filter element and finally flows out of the upper cover. According to the utility model, the first filter element and the second filter element are independent from each other and are divided into a front flow channel and a rear flow channel, so that on one hand, the two filter elements are prevented from mutually mixing water to influence the filtering quality, and on the other hand, the two filter elements can be independently replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water purification, in particular to a PCT composite filter element. Background Art

[0002] The PCT filter element is a filter element used in water purification equipment, usually used as the first stage of filtration. The internal structure of the PCT filter element includes polypropylene PP cotton, activated carbon fiber, and activated carbon rods. These materials work together to remove sediment, rust, suspended matter, residual chlorine, odor, and improve the taste of water. In addition, it can absorb foreign colors and odors. The design of the PCT filter element makes the replacement process relatively simple. Usually, you only need to turn off the water inlet valve and power supply, drain the remaining water, rotate the filter element handle counterclockwise, and then insert the new filter element into the slot and rotate it to lock.

[0003] The applicant has found that two types of activated carbon are used as filter materials in PCT filter elements, generally compressed carbon and sintered carbon. They play different roles in the filtration process. Compressed carbon is more suitable for removing solid particles, while sintered carbon is better for removing odors. The service life of the two is also different. The service life of sintered carbon is longer than that of compressed carbon. In the prior art, the two types of activated carbon are used together and can only be discarded together. Obviously, this practice is not economical. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a PCT composite filter element.

[0005] To this end, the technical solution adopted by the utility model is as follows: a PCT composite filter element, including an outer shell, the outer shell is in the shape of a barrel with an upward opening, a filter element assembly is arranged in the outer shell, and an upper cover assembly is arranged above, the upper cover assembly includes an upper cover, a waterway plate and a seal, the waterway plate has a water inlet and an outlet and an interface connected to the filter element assembly; it is characterized in that: the filter element assembly includes a first filter element and a second filter element, the filter material used in the first filter element is PP cotton and compressed carbon, and the filter material used in the second filter element is sintered carbon; the first filter element and the second filter element are both tubular, the first filter element is sleeved outside the second filter element, and a sleeve is arranged between the first filter element and the second filter element; the flow channel formed is that water flows through the first filter element after entering the outer shell from the upper cover assembly, then returns to the upper cover assembly, enters the outer shell again and flows through the second filter element, and finally flows out from the upper cover.

[0006] Furthermore, the sleeve between the first filter element and the second filter element has a bottom, becoming a sleeve independent of the outer shell, and placing the second filter element therein; the upper cover assembly is threadedly connected to the outer shell, and when the two are connected and tightened, the sleeve and the second filter element in the sleeve are abutted and fixed.

[0007] The utility model makes the first filter element and the second filter element independent of each other and divides them into front and back in flow channel design, which avoids the mutual water flow between the two filter elements to affect the filtering quality, and the two filter elements can be replaced separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 2 is an exploded schematic diagram of this embodiment.

[0009] Figure 2 is a cross-sectional view of this embodiment.

[0010] Figure 3 is a schematic diagram of the upper cover assembly.

[0011] Figure 4 , Figure 5 Schematic diagram of the flow path of this embodiment. DETAILED DESCRIPTION

[0012] See the attached drawings. This embodiment includes an outer shell 1, a first filter element 2, a second filter element 3 and an upper cover assembly 4, wherein the first filter element 2 is sleeved outside the second filter element 3, and together they are placed in the outer shell 1, and are threadedly connected and fixed to the outer shell by the upper cover assembly 4. The upper cover assembly includes an upper cover 11 and a waterway plate 12, as well as a first seal 13 and a second seal 14, which are respectively used for the first filter element and the second filter element; the waterway plate has four water inlets and outlets, which are the raw water inlet E1, the first filter element outlet E2, the second filter element inlet E3 and the pure water outlet E4; wherein E2 and E3 can be directly connected as needed.

[0013] The first filter element 2 is composed of a PP surface 21 and compressed carbon 22; the second filter element 3 is provided with a sleeve 31 on its periphery, which becomes a part of the second filter element and makes it independent of the first filter element.

[0014] Through this design, Figure 4 Figure 5 It can be seen that the water entering from the raw water inlet E1 first flows through the first flow channel S1 and the second flow channel S2, during which it is filtered by the first filter element and flows out from the first filter element outlet E2; then it enters the second filter element through the second filter element inlet E3, flows through the third flow channel S3 and the fourth flow channel S4, during which it is filtered by the second filter element and flows out from the pure water outlet E4.

[0015] The above description is for the case where the entire PCT composite filter element is used completely, and E2 and E3 are connected. In some cases, only the first filter element or the second filter element can be used, and only two of the inlets and outlets can be used. When the first filter element or the second filter element needs to be replaced, it can also be replaced separately.

Claims

1. A PCT composite filter element, comprising an outer shell, the outer shell is in the shape of a barrel with an upward opening, a filter element assembly is arranged in the outer shell, and an upper cover assembly is arranged above the outer shell, the upper cover assembly comprises an upper cover, a waterway plate and a sealing member, the waterway plate has a water inlet and outlet and an interface connected to the filter element assembly; characterized in that: The filter element assembly includes a first filter element and a second filter element. The filter materials used in the first filter element are PP cotton and compressed carbon, and the filter materials used in the second filter element are sintered carbon. The first filter element and the second filter element are both tubular, and the first filter element is sleeved outside the second filter element. A sleeve is provided between the first filter element and the second filter element. The flow channel formed is that water first flows through the first filter element after entering the outer shell from the upper cover assembly, then returns to the upper cover assembly, enters the outer shell again, flows through the second filter element, and finally flows out from the upper cover.

2. A PCT composite filter element as claimed in claim 1, characterized in that: The sleeve between the first filter element and the second filter element has a bottom, becoming a sleeve independent of the outer shell, and placing the second filter element therein; The upper cover assembly is threadedly connected to the outer shell, and when the two are tightly connected, the sleeve and the second filter element in the sleeve are abutted and fixed.

Images